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-rw-r--r--source4/auth/gensec/gensec.c630
-rw-r--r--source4/auth/gensec/gensec.h117
-rw-r--r--source4/auth/gensec/gensec.m412
-rw-r--r--source4/auth/gensec/gensec.mk86
-rw-r--r--source4/auth/gensec/gensec_gssapi.c376
-rw-r--r--source4/auth/gensec/gensec_gsskrb5.c584
-rw-r--r--source4/auth/gensec/gensec_krb5.c751
-rw-r--r--source4/auth/gensec/gensec_ntlmssp.c514
-rw-r--r--source4/auth/gensec/ntlmssp.c1322
-rw-r--r--source4/auth/gensec/ntlmssp.h190
-rw-r--r--source4/auth/gensec/ntlmssp_parse.c338
-rw-r--r--source4/auth/gensec/ntlmssp_sign.c449
-rw-r--r--source4/auth/gensec/schannel.c268
-rw-r--r--source4/auth/gensec/schannel.h35
-rw-r--r--source4/auth/gensec/schannel_sign.c283
-rw-r--r--source4/auth/gensec/schannel_state.c229
-rw-r--r--source4/auth/gensec/spnego.c884
-rw-r--r--source4/auth/gensec/spnego.h69
-rw-r--r--source4/auth/gensec/spnego_parse.c375
19 files changed, 7512 insertions, 0 deletions
diff --git a/source4/auth/gensec/gensec.c b/source4/auth/gensec/gensec.c
new file mode 100644
index 0000000000..cc7327187c
--- /dev/null
+++ b/source4/auth/gensec/gensec.c
@@ -0,0 +1,630 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ Generic Authentication Interface
+
+ Copyright (C) Andrew Tridgell 2003
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "auth/auth.h"
+
+/* the list of currently registered GENSEC backends */
+const static struct gensec_security_ops **generic_security_ops;
+static int gensec_num_backends;
+
+static const struct gensec_security_ops *gensec_security_by_authtype(uint8_t auth_type)
+{
+ int i;
+ for (i=0; i < gensec_num_backends; i++) {
+ if (generic_security_ops[i]->auth_type == auth_type) {
+ return generic_security_ops[i];
+ }
+ }
+
+ return NULL;
+}
+
+static const struct gensec_security_ops *gensec_security_by_oid(const char *oid_string)
+{
+ int i;
+ for (i=0; i < gensec_num_backends; i++) {
+ if (generic_security_ops[i]->oid &&
+ (strcmp(generic_security_ops[i]->oid, oid_string) == 0)) {
+ return generic_security_ops[i];
+ }
+ }
+
+ return NULL;
+}
+
+static const struct gensec_security_ops *gensec_security_by_sasl_name(const char *sasl_name)
+{
+ int i;
+ for (i=0; i < gensec_num_backends; i++) {
+ if (generic_security_ops[i]->sasl_name
+ && (strcmp(generic_security_ops[i]->sasl_name, sasl_name) == 0)) {
+ return generic_security_ops[i];
+ }
+ }
+
+ return NULL;
+}
+
+static const struct gensec_security_ops *gensec_security_by_name(const char *name)
+{
+ int i;
+ for (i=0; i < gensec_num_backends; i++) {
+ if (generic_security_ops[i]->name
+ && (strcmp(generic_security_ops[i]->name, name) == 0)) {
+ return generic_security_ops[i];
+ }
+ }
+
+ return NULL;
+}
+
+const struct gensec_security_ops **gensec_security_all(int *num_backends_out)
+{
+ *num_backends_out = gensec_num_backends;
+ return generic_security_ops;
+}
+
+const char **gensec_security_oids(TALLOC_CTX *mem_ctx, const char *skip)
+{
+ int i, j = 0;
+ const char **oid_list;
+ int num_backends;
+ const struct gensec_security_ops **ops = gensec_security_all(&num_backends);
+ if (!ops) {
+ return NULL;
+ }
+ oid_list = talloc_array(mem_ctx, const char *, num_backends + 1);
+ if (!oid_list) {
+ return NULL;
+ }
+
+ for (i=0; i<num_backends; i++) {
+ if (!ops[i]->oid) {
+ continue;
+ }
+
+ if (skip && strcmp(skip, ops[i]->oid)==0) {
+ continue;
+ }
+
+ oid_list[j] = ops[i]->oid;
+ j++;
+ }
+ oid_list[j] = NULL;
+ return oid_list;
+}
+
+/**
+ Start the GENSEC system, returning a context pointer.
+ @param mem_ctx The parent TALLOC memory context.
+ @param gensec_security Returned GENSEC context pointer.
+ @note The mem_ctx is only a parent and may be NULL.
+*/
+static NTSTATUS gensec_start(TALLOC_CTX *mem_ctx, struct gensec_security **gensec_security)
+{
+ (*gensec_security) = talloc(mem_ctx, struct gensec_security);
+ if (!(*gensec_security)) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ (*gensec_security)->ops = NULL;
+
+ ZERO_STRUCT((*gensec_security)->target);
+
+ (*gensec_security)->subcontext = False;
+ (*gensec_security)->want_features = 0;
+ return NT_STATUS_OK;
+}
+
+/**
+ * Start a GENSEC subcontext, with a copy of the properties of the parent
+ * @param mem_ctx The parent TALLOC memory context.
+ * @param parent The parent GENSEC context
+ * @param gensec_security Returned GENSEC context pointer.
+ * @note Used by SPNEGO in particular, for the actual implementation mechanism
+ */
+
+NTSTATUS gensec_subcontext_start(TALLOC_CTX *mem_ctx,
+ struct gensec_security *parent,
+ struct gensec_security **gensec_security)
+{
+ (*gensec_security) = talloc(mem_ctx, struct gensec_security);
+ if (!(*gensec_security)) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ (**gensec_security) = *parent;
+ (*gensec_security)->ops = NULL;
+ (*gensec_security)->private_data = NULL;
+
+ (*gensec_security)->subcontext = True;
+
+ return NT_STATUS_OK;
+}
+
+/**
+ Start the GENSEC system, in client mode, returning a context pointer.
+ @param mem_ctx The parent TALLOC memory context.
+ @param gensec_security Returned GENSEC context pointer.
+ @note The mem_ctx is only a parent and may be NULL.
+*/
+NTSTATUS gensec_client_start(TALLOC_CTX *mem_ctx, struct gensec_security **gensec_security)
+{
+ NTSTATUS status;
+ status = gensec_start(mem_ctx, gensec_security);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+ (*gensec_security)->gensec_role = GENSEC_CLIENT;
+ (*gensec_security)->password_callback = NULL;
+
+ return status;
+}
+
+/**
+ Start the GENSEC system, in server mode, returning a context pointer.
+ @param mem_ctx The parent TALLOC memory context.
+ @param gensec_security Returned GENSEC context pointer.
+ @note The mem_ctx is only a parent and may be NULL.
+*/
+NTSTATUS gensec_server_start(TALLOC_CTX *mem_ctx, struct gensec_security **gensec_security)
+{
+ NTSTATUS status;
+ status = gensec_start(mem_ctx, gensec_security);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+ (*gensec_security)->gensec_role = GENSEC_SERVER;
+
+ return status;
+}
+
+static NTSTATUS gensec_start_mech(struct gensec_security *gensec_security)
+{
+ NTSTATUS status;
+ DEBUG(5, ("Starting GENSEC %smechanism %s\n",
+ gensec_security->subcontext ? "sub" : "",
+ gensec_security->ops->name));
+ switch (gensec_security->gensec_role) {
+ case GENSEC_CLIENT:
+ if (gensec_security->ops->client_start) {
+ status = gensec_security->ops->client_start(gensec_security);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("Failed to start GENSEC client mech %s: %s\n",
+ gensec_security->ops->name, nt_errstr(status)));
+ }
+ return status;
+ }
+ case GENSEC_SERVER:
+ if (gensec_security->ops->server_start) {
+ status = gensec_security->ops->server_start(gensec_security);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("Failed to start GENSEC server mech %s: %s\n",
+ gensec_security->ops->name, nt_errstr(status)));
+ }
+ return status;
+ }
+ }
+ return NT_STATUS_INVALID_PARAMETER;
+}
+
+/**
+ * Start a GENSEC sub-mechanism by DCERPC allocated 'auth type' number
+ * @param gensec_security GENSEC context pointer.
+ * @param auth_type DCERPC auth type
+ * @param auth_level DCERPC auth level
+ */
+
+NTSTATUS gensec_start_mech_by_authtype(struct gensec_security *gensec_security,
+ uint8_t auth_type, uint8_t auth_level)
+{
+ gensec_security->ops = gensec_security_by_authtype(auth_type);
+ if (!gensec_security->ops) {
+ DEBUG(3, ("Could not find GENSEC backend for auth_type=%d\n", (int)auth_type));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ gensec_want_feature(gensec_security, GENSEC_FEATURE_DCE_STYLE);
+ if (auth_level == DCERPC_AUTH_LEVEL_INTEGRITY) {
+ gensec_want_feature(gensec_security, GENSEC_FEATURE_SIGN);
+ }
+ if (auth_level == DCERPC_AUTH_LEVEL_PRIVACY) {
+ gensec_want_feature(gensec_security, GENSEC_FEATURE_SIGN);
+ gensec_want_feature(gensec_security, GENSEC_FEATURE_SEAL);
+ }
+
+ return gensec_start_mech(gensec_security);
+}
+
+const char *gensec_get_name_by_authtype(uint8_t authtype)
+{
+ const struct gensec_security_ops *ops;
+ ops = gensec_security_by_authtype(authtype);
+ if (ops) {
+ return ops->name;
+ }
+ return NULL;
+}
+
+
+const char *gensec_get_name_by_oid(const char *oid_string)
+{
+ const struct gensec_security_ops *ops;
+ ops = gensec_security_by_oid(oid_string);
+ if (ops) {
+ return ops->name;
+ }
+ return NULL;
+}
+
+
+/**
+ * Start a GENSEC sub-mechanism by OID, used in SPNEGO
+ *
+ * @note This should also be used when you wish to just start NLTMSSP (for example), as it uses a
+ * well-known #define to hook it in.
+ */
+
+NTSTATUS gensec_start_mech_by_oid(struct gensec_security *gensec_security,
+ const char *mech_oid)
+{
+ gensec_security->ops = gensec_security_by_oid(mech_oid);
+ if (!gensec_security->ops) {
+ DEBUG(3, ("Could not find GENSEC backend for oid=%s\n", mech_oid));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ return gensec_start_mech(gensec_security);
+}
+
+/**
+ * Start a GENSEC sub-mechanism by a well know SASL name
+ *
+ */
+
+NTSTATUS gensec_start_mech_by_sasl_name(struct gensec_security *gensec_security,
+ const char *sasl_name)
+{
+ gensec_security->ops = gensec_security_by_sasl_name(sasl_name);
+ if (!gensec_security->ops) {
+ DEBUG(3, ("Could not find GENSEC backend for sasl_name=%s\n", sasl_name));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ return gensec_start_mech(gensec_security);
+}
+
+/*
+ wrappers for the gensec function pointers
+*/
+NTSTATUS gensec_unseal_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ if (!gensec_security->ops->unseal_packet) {
+ return NT_STATUS_NOT_IMPLEMENTED;
+ }
+ if (!gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)) {
+ if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SIGN)) {
+ return gensec_check_packet(gensec_security, mem_ctx,
+ data, length,
+ whole_pdu, pdu_length,
+ sig);
+ }
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ return gensec_security->ops->unseal_packet(gensec_security, mem_ctx,
+ data, length,
+ whole_pdu, pdu_length,
+ sig);
+}
+
+NTSTATUS gensec_check_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ const DATA_BLOB *sig)
+{
+ if (!gensec_security->ops->check_packet) {
+ return NT_STATUS_NOT_IMPLEMENTED;
+ }
+ if (!gensec_have_feature(gensec_security, GENSEC_FEATURE_SIGN)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ return gensec_security->ops->check_packet(gensec_security, mem_ctx, data, length, whole_pdu, pdu_length, sig);
+}
+
+NTSTATUS gensec_seal_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ if (!gensec_security->ops->seal_packet) {
+ return NT_STATUS_NOT_IMPLEMENTED;
+ }
+ if (!gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)) {
+ if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SIGN)) {
+ return gensec_sign_packet(gensec_security, mem_ctx,
+ data, length,
+ whole_pdu, pdu_length,
+ sig);
+ }
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ return gensec_security->ops->seal_packet(gensec_security, mem_ctx, data, length, whole_pdu, pdu_length, sig);
+}
+
+NTSTATUS gensec_sign_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ if (!gensec_security->ops->sign_packet) {
+ return NT_STATUS_NOT_IMPLEMENTED;
+ }
+ if (!gensec_have_feature(gensec_security, GENSEC_FEATURE_SIGN)) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ return gensec_security->ops->sign_packet(gensec_security, mem_ctx, data, length, whole_pdu, pdu_length, sig);
+}
+
+size_t gensec_sig_size(struct gensec_security *gensec_security)
+{
+ if (!gensec_security->ops->sig_size) {
+ return 0;
+ }
+ if (!gensec_have_feature(gensec_security, GENSEC_FEATURE_SIGN)) {
+ return 0;
+ }
+
+ return gensec_security->ops->sig_size(gensec_security);
+}
+
+NTSTATUS gensec_wrap(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out)
+{
+ if (!gensec_security->ops->wrap) {
+ return NT_STATUS_NOT_IMPLEMENTED;
+ }
+ return gensec_security->ops->wrap(gensec_security, mem_ctx, in, out);
+}
+
+NTSTATUS gensec_unwrap(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out)
+{
+ if (!gensec_security->ops->unwrap) {
+ return NT_STATUS_NOT_IMPLEMENTED;
+ }
+ return gensec_security->ops->unwrap(gensec_security, mem_ctx, in, out);
+}
+
+NTSTATUS gensec_session_key(struct gensec_security *gensec_security,
+ DATA_BLOB *session_key)
+{
+ if (!gensec_security->ops->session_key) {
+ return NT_STATUS_NOT_IMPLEMENTED;
+ }
+ return gensec_security->ops->session_key(gensec_security, session_key);
+}
+
+/**
+ * Return the credentials of a logged on user, including session keys
+ * etc.
+ *
+ * Only valid after a successful authentication
+ *
+ * May only be called once per authentication.
+ *
+ */
+
+NTSTATUS gensec_session_info(struct gensec_security *gensec_security,
+ struct auth_session_info **session_info)
+{
+ if (!gensec_security->ops->session_info) {
+ return NT_STATUS_NOT_IMPLEMENTED;
+ }
+ return gensec_security->ops->session_info(gensec_security, session_info);
+}
+
+/**
+ * Next state function for the GENSEC state machine
+ *
+ * @param gensec_security GENSEC State
+ * @param out_mem_ctx The TALLOC_CTX for *out to be allocated on
+ * @param in The request, as a DATA_BLOB
+ * @param out The reply, as an talloc()ed DATA_BLOB, on *out_mem_ctx
+ * @return Error, MORE_PROCESSING_REQUIRED if a reply is sent,
+ * or NT_STATUS_OK if the user is authenticated.
+ */
+
+NTSTATUS gensec_update(struct gensec_security *gensec_security, TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out)
+{
+ return gensec_security->ops->update(gensec_security, out_mem_ctx, in, out);
+}
+
+/**
+ * Set the requirement for a certain feature on the connection
+ *
+ */
+
+void gensec_want_feature(struct gensec_security *gensec_security,
+ uint32_t feature)
+{
+ gensec_security->want_features |= feature;
+}
+
+/**
+ * Check the requirement for a certain feature on the connection
+ *
+ */
+
+BOOL gensec_have_feature(struct gensec_security *gensec_security,
+ uint32_t feature)
+{
+ if (!gensec_security->ops->have_feature) {
+ return False;
+ }
+ return gensec_security->ops->have_feature(gensec_security, feature);
+}
+
+/**
+ * Associate a credentails structure with a GENSEC context - talloc_reference()s it to the context
+ *
+ */
+
+NTSTATUS gensec_set_credentials(struct gensec_security *gensec_security, struct cli_credentials *credentials)
+{
+ gensec_security->credentials = talloc_reference(gensec_security, credentials);
+ return NT_STATUS_OK;
+}
+
+/**
+ * Return the credentails structure associated with a GENSEC context
+ *
+ */
+
+struct cli_credentials *gensec_get_credentials(struct gensec_security *gensec_security)
+{
+ return gensec_security->credentials;
+}
+
+/**
+ * Set the target service (such as 'http' or 'host') on a GENSEC context - ensures it is talloc()ed
+ *
+ */
+
+NTSTATUS gensec_set_target_service(struct gensec_security *gensec_security, const char *service)
+{
+ gensec_security->target.service = talloc_strdup(gensec_security, service);
+ if (!gensec_security->target.service) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ return NT_STATUS_OK;
+}
+
+/**
+ * Set the target hostname (suitable for kerberos resolutation) on a GENSEC context - ensures it is talloc()ed
+ *
+ */
+
+NTSTATUS gensec_set_target_hostname(struct gensec_security *gensec_security, const char *hostname)
+{
+ gensec_security->target.hostname = talloc_strdup(gensec_security, hostname);
+ if (!gensec_security->target.hostname) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ return NT_STATUS_OK;
+}
+
+const char *gensec_get_target_hostname(struct gensec_security *gensec_security)
+{
+ if (gensec_security->target.hostname) {
+ return gensec_security->target.hostname;
+ }
+
+ /* TODO: Add a 'set sockaddr' call, and do a reverse lookup */
+ return NULL;
+}
+
+const char *gensec_get_target_service(struct gensec_security *gensec_security)
+{
+ if (gensec_security->target.service) {
+ return gensec_security->target.service;
+ }
+
+ return "host";
+}
+
+/*
+ register a GENSEC backend.
+
+ The 'name' can be later used by other backends to find the operations
+ structure for this backend.
+*/
+NTSTATUS gensec_register(const void *_ops)
+{
+ const struct gensec_security_ops *ops = _ops;
+
+ if (!lp_parm_bool(-1, "gensec", ops->name, ops->enabled)) {
+ DEBUG(2,("gensec subsystem %s is disabled\n", ops->name));
+ return NT_STATUS_OK;
+ }
+
+ if (gensec_security_by_name(ops->name) != NULL) {
+ /* its already registered! */
+ DEBUG(0,("GENSEC backend '%s' already registered\n",
+ ops->name));
+ return NT_STATUS_OBJECT_NAME_COLLISION;
+ }
+
+ generic_security_ops = realloc_p(generic_security_ops,
+ const struct gensec_security_ops *,
+ gensec_num_backends+1);
+ if (!generic_security_ops) {
+ smb_panic("out of memory in gensec_register");
+ }
+
+ generic_security_ops[gensec_num_backends] = ops;
+
+ gensec_num_backends++;
+
+ DEBUG(3,("GENSEC backend '%s' registered\n",
+ ops->name));
+
+ return NT_STATUS_OK;
+}
+
+/*
+ return the GENSEC interface version, and the size of some critical types
+ This can be used by backends to either detect compilation errors, or provide
+ multiple implementations for different smbd compilation options in one module
+*/
+const struct gensec_critical_sizes *gensec_interface_version(void)
+{
+ static const struct gensec_critical_sizes critical_sizes = {
+ GENSEC_INTERFACE_VERSION,
+ sizeof(struct gensec_security_ops),
+ sizeof(struct gensec_security),
+ };
+
+ return &critical_sizes;
+}
+
+/*
+ initialise the GENSEC subsystem
+*/
+NTSTATUS gensec_init(void)
+{
+ return NT_STATUS_OK;
+}
diff --git a/source4/auth/gensec/gensec.h b/source4/auth/gensec/gensec.h
new file mode 100644
index 0000000000..91c817d48a
--- /dev/null
+++ b/source4/auth/gensec/gensec.h
@@ -0,0 +1,117 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ Generic Authentication Interface
+
+ Copyright (C) Andrew Tridgell 2003
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#define GENSEC_OID_NTLMSSP "1 3 6 1 4 1 311 2 2 10"
+#define GENSEC_OID_SPNEGO "1 3 6 1 5 5 2"
+#define GENSEC_OID_KERBEROS5 "1 2 840 113554 1 2 2"
+#define GENSEC_OID_KERBEROS5_OLD "1 2 840 48018 1 2 2"
+#define GENSEC_OID_KERBEROS5_USER2USER "1 2 840 113554 1 2 2 3"
+
+struct gensec_security;
+struct gensec_target {
+ const char *principal;
+ const char *hostname;
+ const struct sock_addr *addr;
+ const char *service;
+};
+
+#define GENSEC_FEATURE_SESSION_KEY 0x00000001
+#define GENSEC_FEATURE_SIGN 0x00000002
+#define GENSEC_FEATURE_SEAL 0x00000004
+#define GENSEC_FEATURE_DCE_STYLE 0x00000008
+
+/* GENSEC mode */
+enum gensec_role
+{
+ GENSEC_SERVER,
+ GENSEC_CLIENT
+};
+
+struct auth_session_info;
+
+struct gensec_security_ops {
+ const char *name;
+ const char *sasl_name;
+ uint8_t auth_type; /* 0 if not offered on DCE-RPC */
+ const char *oid; /* NULL if not offered by SPNEGO */
+ NTSTATUS (*client_start)(struct gensec_security *gensec_security);
+ NTSTATUS (*server_start)(struct gensec_security *gensec_security);
+ NTSTATUS (*update)(struct gensec_security *gensec_security, TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out);
+ NTSTATUS (*seal_packet)(struct gensec_security *gensec_security, TALLOC_CTX *sig_mem_ctx,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig);
+ NTSTATUS (*sign_packet)(struct gensec_security *gensec_security, TALLOC_CTX *sig_mem_ctx,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig);
+ size_t (*sig_size)(struct gensec_security *gensec_security);
+ NTSTATUS (*check_packet)(struct gensec_security *gensec_security, TALLOC_CTX *sig_mem_ctx,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ const DATA_BLOB *sig);
+ NTSTATUS (*unseal_packet)(struct gensec_security *gensec_security, TALLOC_CTX *sig_mem_ctx,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig);
+ NTSTATUS (*wrap)(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out);
+ NTSTATUS (*unwrap)(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out);
+ NTSTATUS (*session_key)(struct gensec_security *gensec_security, DATA_BLOB *session_key);
+ NTSTATUS (*session_info)(struct gensec_security *gensec_security,
+ struct auth_session_info **session_info);
+ BOOL (*have_feature)(struct gensec_security *gensec_security,
+ uint32_t feature);
+ BOOL enabled;
+};
+
+#define GENSEC_INTERFACE_VERSION 0
+
+struct gensec_security {
+ gensec_password_callback password_callback;
+ void *password_callback_private;
+ const struct gensec_security_ops *ops;
+ void *private_data;
+ struct cli_credentials *credentials;
+ struct gensec_target target;
+ enum gensec_role gensec_role;
+ BOOL subcontext;
+ uint32_t want_features;
+};
+
+/* this structure is used by backends to determine the size of some critical types */
+struct gensec_critical_sizes {
+ int interface_version;
+ int sizeof_gensec_security_ops;
+ int sizeof_gensec_security;
+};
+
+
+/* pre-declare schannel structure for schannel backend */
+struct schannel_state;
diff --git a/source4/auth/gensec/gensec.m4 b/source4/auth/gensec/gensec.m4
new file mode 100644
index 0000000000..1af0a1d9c8
--- /dev/null
+++ b/source4/auth/gensec/gensec.m4
@@ -0,0 +1,12 @@
+SMB_MODULE_DEFAULT(gensec_krb5, NOT)
+SMB_MODULE_DEFAULT(gensec_gssapi, NOT)
+SMB_MODULE_DEFAULT(gensec_gsskrb5, NOT)
+
+if test x"$SMB_EXT_LIB_ENABLE_KRB5" = x"YES"; then
+ # krb5 is now disabled at runtime, not build time
+ SMB_MODULE_DEFAULT(gensec_krb5, STATIC)
+ SMB_MODULE_DEFAULT(gensec_gssapi, STATIC)
+ if test x"$samba_cv_GSS_C_DCE_STYLE" = x"yes"; then
+ SMB_MODULE_DEFAULT(gensec_gsskrb5, STATIC)
+ fi
+fi
diff --git a/source4/auth/gensec/gensec.mk b/source4/auth/gensec/gensec.mk
new file mode 100644
index 0000000000..8ed6f7c840
--- /dev/null
+++ b/source4/auth/gensec/gensec.mk
@@ -0,0 +1,86 @@
+#################################
+# Start SUBSYSTEM GENSEC
+[SUBSYSTEM::GENSEC]
+INIT_FUNCTION = gensec_init
+INIT_OBJ_FILES = auth/gensec/gensec.o
+REQUIRED_SUBSYSTEMS = \
+ SCHANNELDB
+# End SUBSYSTEM GENSEC
+#################################
+
+################################################
+# Start MODULE gensec_krb5
+[MODULE::gensec_krb5]
+SUBSYSTEM = GENSEC
+INIT_FUNCTION = gensec_krb5_init
+INIT_OBJ_FILES = auth/gensec/gensec_krb5.o
+REQUIRED_SUBSYSTEMS = NDR_KRB5PAC KERBEROS EXT_LIB_KRB5
+# End MODULE gensec_krb5
+################################################
+
+################################################
+# Start MODULE gensec_gssapi
+[MODULE::gensec_gssapi]
+SUBSYSTEM = GENSEC
+INIT_FUNCTION = gensec_gssapi_init
+INIT_OBJ_FILES = auth/gensec/gensec_gssapi.o
+REQUIRED_SUBSYSTEMS = EXT_LIB_KRB5
+# End MODULE gensec_gssapi
+################################################
+
+################################################
+# Start MODULE gensec_gsskrb5
+[MODULE::gensec_gsskrb5]
+SUBSYSTEM = GENSEC
+INIT_FUNCTION = gensec_gsskrb5_init
+INIT_OBJ_FILES = auth/gensec/gensec_gsskrb5.o
+REQUIRED_SUBSYSTEMS = EXT_LIB_KRB5
+# End MODULE gensec_gsskrb5
+################################################
+
+################################################
+# Start MODULE gensec_spnego
+[MODULE::gensec_spnego]
+SUBSYSTEM = GENSEC
+INIT_FUNCTION = gensec_spnego_init
+INIT_OBJ_FILES = auth/gensec/spnego.o
+ADD_OBJ_FILES = \
+ auth/gensec/spnego_parse.o
+# End MODULE gensec_spnego
+################################################
+
+################################################
+# Start MODULE gensec_ntlmssp
+[MODULE::gensec_ntlmssp]
+SUBSYSTEM = GENSEC
+INIT_FUNCTION = gensec_ntlmssp_init
+INIT_OBJ_FILES = auth/gensec/gensec_ntlmssp.o
+ADD_OBJ_FILES = \
+ auth/gensec/ntlmssp.o \
+ auth/gensec/ntlmssp_parse.o \
+ auth/gensec/ntlmssp_sign.o
+REQUIRED_SUBSYSTEMS = AUTH
+# End MODULE gensec_ntlmssp
+################################################
+
+################################################
+# Start MODULE gensec_schannel
+[MODULE::gensec_schannel]
+SUBSYSTEM = GENSEC
+INIT_FUNCTION = gensec_schannel_init
+INIT_OBJ_FILES = auth/gensec/schannel.o
+ADD_OBJ_FILES = \
+ auth/gensec/schannel_sign.o
+REQUIRED_SUBSYSTEMS = AUTH SCHANNELDB
+# End MODULE gensec_ntlmssp
+################################################
+
+################################################
+# Start SUBSYSTEM SCHANNELDB
+[SUBSYSTEM::SCHANNELDB]
+INIT_OBJ_FILES = \
+ auth/gensec/schannel_state.o
+#
+# End SUBSYSTEM SCHANNELDB
+################################################
+
diff --git a/source4/auth/gensec/gensec_gssapi.c b/source4/auth/gensec/gensec_gssapi.c
new file mode 100644
index 0000000000..c974b93952
--- /dev/null
+++ b/source4/auth/gensec/gensec_gssapi.c
@@ -0,0 +1,376 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ Kerberos backend for GENSEC
+
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "system/kerberos.h"
+#include "auth/auth.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
+
+struct gensec_gssapi_state {
+ gss_ctx_id_t gssapi_context;
+ struct gss_channel_bindings_struct *input_chan_bindings;
+ gss_name_t server_name;
+ gss_name_t client_name;
+ OM_uint32 want_flags, got_flags;
+ const gss_OID_desc *gss_oid;
+};
+static int gensec_gssapi_destory(void *ptr)
+{
+ struct gensec_gssapi_state *gensec_gssapi_state = ptr;
+ OM_uint32 maj_stat, min_stat;
+
+ if (gensec_gssapi_state->gssapi_context != GSS_C_NO_CONTEXT) {
+ maj_stat = gss_delete_sec_context (&min_stat,
+ &gensec_gssapi_state->gssapi_context,
+ GSS_C_NO_BUFFER);
+ }
+
+ if (gensec_gssapi_state->server_name != GSS_C_NO_NAME) {
+ maj_stat = gss_release_name(&min_stat, &gensec_gssapi_state->server_name);
+ }
+ if (gensec_gssapi_state->client_name != GSS_C_NO_NAME) {
+ maj_stat = gss_release_name(&min_stat, &gensec_gssapi_state->client_name);
+ }
+ return 0;
+}
+
+static NTSTATUS gensec_gssapi_start(struct gensec_security *gensec_security)
+{
+ struct gensec_gssapi_state *gensec_gssapi_state;
+
+ gensec_gssapi_state = talloc(gensec_security, struct gensec_gssapi_state);
+ if (!gensec_gssapi_state) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ gensec_security->private_data = gensec_gssapi_state;
+
+ gensec_gssapi_state->gssapi_context = GSS_C_NO_CONTEXT;
+ gensec_gssapi_state->server_name = GSS_C_NO_NAME;
+ gensec_gssapi_state->client_name = GSS_C_NO_NAME;
+
+ talloc_set_destructor(gensec_gssapi_state, gensec_gssapi_destory);
+
+ /* TODO: Fill in channel bindings */
+ gensec_gssapi_state->input_chan_bindings = GSS_C_NO_CHANNEL_BINDINGS;
+
+ gensec_gssapi_state->want_flags = 0;
+ gensec_gssapi_state->got_flags = 0;
+
+ if (gensec_security->want_features & GENSEC_FEATURE_SESSION_KEY) {
+ /* GSSAPI won't give us the session keys */
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ if (gensec_security->want_features & GENSEC_FEATURE_SIGN) {
+ gensec_gssapi_state->want_flags |= GSS_C_INTEG_FLAG;
+ }
+ if (gensec_security->want_features & GENSEC_FEATURE_SEAL) {
+ gensec_gssapi_state->want_flags |= GSS_C_CONF_FLAG;
+ }
+
+ if (strcmp(gensec_security->ops->oid, GENSEC_OID_KERBEROS5) == 0) {
+ static const gss_OID_desc gensec_gss_krb5_mechanism_oid_desc =
+ {9, (void *)discard_const_p(char, "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02")};
+
+ gensec_gssapi_state->gss_oid = &gensec_gss_krb5_mechanism_oid_desc;
+ } else if (strcmp(gensec_security->ops->oid, GENSEC_OID_SPNEGO) == 0) {
+ static const gss_OID_desc gensec_gss_spnego_mechanism_oid_desc =
+ {6, (void *)discard_const_p(char, "\x2b\x06\x01\x05\x05\x02")};
+ gensec_gssapi_state->gss_oid = &gensec_gss_spnego_mechanism_oid_desc;
+ } else {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS gensec_gssapi_server_start(struct gensec_security *gensec_security)
+{
+ NTSTATUS nt_status;
+ struct gensec_gssapi_state *gensec_gssapi_state;
+
+ nt_status = gensec_gssapi_start(gensec_security);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ return nt_status;
+ }
+
+ gensec_gssapi_state = gensec_security->private_data;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS gensec_gssapi_client_start(struct gensec_security *gensec_security)
+{
+ struct gensec_gssapi_state *gensec_gssapi_state;
+ NTSTATUS nt_status;
+ gss_buffer_desc name_token;
+ OM_uint32 maj_stat, min_stat;
+
+ gss_OID_desc hostbased = {10,
+ (void *)discard_const_p(char, "\x2a\x86\x48\x86\xf7\x12"
+ "\x01\x02\x01\x04")};
+
+ nt_status = gensec_gssapi_start(gensec_security);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ return nt_status;
+ }
+
+ gensec_gssapi_state = gensec_security->private_data;
+
+ name_token.value = talloc_asprintf(gensec_gssapi_state, "%s@%s", gensec_get_target_service(gensec_security),
+ gensec_get_target_hostname(gensec_security));
+ DEBUG(0, ("name: %s\n", (char *)name_token.value));
+ name_token.length = strlen(name_token.value);
+
+ maj_stat = gss_import_name (&min_stat,
+ &name_token,
+ &hostbased,
+ &gensec_gssapi_state->server_name);
+
+
+ if (maj_stat) {
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+ return NT_STATUS_OK;
+}
+
+
+
+/**
+ * Next state function for the GSSAPI GENSEC mechanism
+ *
+ * @param gensec_gssapi_state GSSAPI State
+ * @param out_mem_ctx The TALLOC_CTX for *out to be allocated on
+ * @param in The request, as a DATA_BLOB
+ * @param out The reply, as an talloc()ed DATA_BLOB, on *out_mem_ctx
+ * @return Error, MORE_PROCESSING_REQUIRED if a reply is sent,
+ * or NT_STATUS_OK if the user is authenticated.
+ */
+
+static NTSTATUS gensec_gssapi_update(struct gensec_security *gensec_security,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out)
+{
+ struct gensec_gssapi_state *gensec_gssapi_state = gensec_security->private_data;
+ NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
+ OM_uint32 maj_stat, min_stat;
+ OM_uint32 min_stat2;
+ gss_buffer_desc input_token, output_token;
+ gss_OID gss_oid_p;
+ input_token.length = in.length;
+ input_token.value = in.data;
+
+ switch (gensec_security->gensec_role) {
+ case GENSEC_CLIENT:
+ {
+ maj_stat = gss_init_sec_context(&min_stat,
+ GSS_C_NO_CREDENTIAL,
+ &gensec_gssapi_state->gssapi_context,
+ gensec_gssapi_state->server_name,
+ discard_const_p(gss_OID_desc, gensec_gssapi_state->gss_oid),
+ gensec_gssapi_state->want_flags,
+ 0,
+ gensec_gssapi_state->input_chan_bindings,
+ &input_token,
+ NULL,
+ &output_token,
+ &gensec_gssapi_state->got_flags, /* ret flags */
+ NULL);
+ break;
+ }
+ case GENSEC_SERVER:
+ {
+ maj_stat = gss_accept_sec_context(&min_stat,
+ &gensec_gssapi_state->gssapi_context,
+ GSS_C_NO_CREDENTIAL,
+ &input_token,
+ gensec_gssapi_state->input_chan_bindings,
+ &gensec_gssapi_state->client_name,
+ &gss_oid_p,
+ &output_token,
+ &gensec_gssapi_state->got_flags,
+ NULL,
+ NULL);
+ gensec_gssapi_state->gss_oid = gss_oid_p;
+ break;
+ }
+ default:
+ return NT_STATUS_INVALID_PARAMETER;
+
+ }
+
+ *out = data_blob_talloc(out_mem_ctx, output_token.value, output_token.length);
+ gss_release_buffer(&min_stat2, &output_token);
+
+ if (maj_stat == GSS_S_COMPLETE) {
+ return NT_STATUS_OK;
+ } else if (maj_stat == GSS_S_CONTINUE_NEEDED) {
+ return NT_STATUS_MORE_PROCESSING_REQUIRED;
+ } else {
+ gss_buffer_desc msg1, msg2;
+ OM_uint32 msg_ctx = 0;
+
+ msg1.value = NULL;
+ msg2.value = NULL;
+ gss_display_status(&min_stat2, maj_stat, GSS_C_GSS_CODE,
+ GSS_C_NULL_OID, &msg_ctx, &msg1);
+ gss_display_status(&min_stat2, min_stat, GSS_C_MECH_CODE,
+ GSS_C_NULL_OID, &msg_ctx, &msg2);
+ DEBUG(1, ("gensec_gssapi_update: %s : %s\n", (char *)msg1.value, (char *)msg2.value));
+ gss_release_buffer(&min_stat2, &msg1);
+ gss_release_buffer(&min_stat2, &msg2);
+
+ return nt_status;
+ }
+
+}
+
+static NTSTATUS gensec_gssapi_wrap(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out)
+{
+ struct gensec_gssapi_state *gensec_gssapi_state = gensec_security->private_data;
+ OM_uint32 maj_stat, min_stat;
+ gss_buffer_desc input_token, output_token;
+ int conf_state;
+ input_token.length = in->length;
+ input_token.value = in->data;
+
+ maj_stat = gss_wrap(&min_stat,
+ gensec_gssapi_state->gssapi_context,
+ gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL),
+ GSS_C_QOP_DEFAULT,
+ &input_token,
+ &conf_state,
+ &output_token);
+ if (GSS_ERROR(maj_stat)) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ *out = data_blob_talloc(mem_ctx, output_token.value, output_token.length);
+
+ gss_release_buffer(&min_stat, &output_token);
+
+ if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)
+ && !conf_state) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS gensec_gssapi_unwrap(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out)
+{
+ struct gensec_gssapi_state *gensec_gssapi_state = gensec_security->private_data;
+ OM_uint32 maj_stat, min_stat;
+ gss_buffer_desc input_token, output_token;
+ int conf_state;
+ gss_qop_t qop_state;
+ input_token.length = in->length;
+ input_token.value = in->data;
+
+ maj_stat = gss_unwrap(&min_stat,
+ gensec_gssapi_state->gssapi_context,
+ &input_token,
+ &output_token,
+ &conf_state,
+ &qop_state);
+ if (GSS_ERROR(maj_stat)) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ *out = data_blob_talloc(mem_ctx, output_token.value, output_token.length);
+
+ gss_release_buffer(&min_stat, &output_token);
+
+ if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)
+ && !conf_state) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ return NT_STATUS_OK;
+}
+
+static BOOL gensec_gssapi_have_feature(struct gensec_security *gensec_security,
+ uint32_t feature)
+{
+ struct gensec_gssapi_state *gensec_gssapi_state = gensec_security->private_data;
+ if (feature & GENSEC_FEATURE_SIGN) {
+ return gensec_gssapi_state->got_flags & GSS_C_INTEG_FLAG;
+ }
+ if (feature & GENSEC_FEATURE_SEAL) {
+ return gensec_gssapi_state->got_flags & GSS_C_CONF_FLAG;
+ }
+ return False;
+}
+
+/* As a server, this could in theory accept any GSSAPI mech */
+static const struct gensec_security_ops gensec_gssapi_krb5_security_ops = {
+ .name = "gssapi_krb5",
+ .sasl_name = "GSSAPI",
+ .oid = GENSEC_OID_KERBEROS5,
+ .client_start = gensec_gssapi_client_start,
+ .server_start = gensec_gssapi_server_start,
+ .update = gensec_gssapi_update,
+ .wrap = gensec_gssapi_wrap,
+ .unwrap = gensec_gssapi_unwrap,
+ .have_feature = gensec_gssapi_have_feature,
+ .enabled = False
+
+};
+
+static const struct gensec_security_ops gensec_gssapi_spnego_security_ops = {
+ .name = "gssapi_spnego",
+ .sasl_name = "GSS-SPNEGO",
+ .oid = GENSEC_OID_SPNEGO,
+ .client_start = gensec_gssapi_client_start,
+ .server_start = gensec_gssapi_server_start,
+ .update = gensec_gssapi_update,
+ .wrap = gensec_gssapi_wrap,
+ .unwrap = gensec_gssapi_unwrap,
+ .have_feature = gensec_gssapi_have_feature,
+ .enabled = False
+};
+
+NTSTATUS gensec_gssapi_init(void)
+{
+ NTSTATUS ret;
+
+ ret = gensec_register(&gensec_gssapi_krb5_security_ops);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(0,("Failed to register '%s' gensec backend!\n",
+ gensec_gssapi_krb5_security_ops.name));
+ return ret;
+ }
+
+ ret = gensec_register(&gensec_gssapi_spnego_security_ops);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(0,("Failed to register '%s' gensec backend!\n",
+ gensec_gssapi_spnego_security_ops.name));
+ return ret;
+ }
+
+ return ret;
+}
diff --git a/source4/auth/gensec/gensec_gsskrb5.c b/source4/auth/gensec/gensec_gsskrb5.c
new file mode 100644
index 0000000000..77e077276b
--- /dev/null
+++ b/source4/auth/gensec/gensec_gsskrb5.c
@@ -0,0 +1,584 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ GSSAPI KRB5 backend for GENSEC
+
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004
+ Copyright (C) Stefan Metzmacher <metze@samba.org> 2005
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "system/kerberos.h"
+#include "system/time.h"
+#include "libcli/auth/kerberos.h"
+#include "auth/auth.h"
+
+static const gss_OID_desc gensec_gss_krb5_mechanism_oid_desc =
+ {9, (void *)discard_const_p(char, "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02")};
+
+enum GENSEC_GSSKRB5_STATE {
+ GENSEC_GSSKRB5_CLIENT_START,
+ GENSEC_GSSKRB5_CLIENT_MUTUAL_AUTH,
+ GENSEC_GSSKRB5_CLIENT_DCE_STYLE,
+ GENSEC_GSSKRB5_DONE
+};
+
+struct gensec_gsskrb5_state {
+ enum GENSEC_GSSKRB5_STATE state_position;
+ gss_ctx_id_t gssapi_context;
+ struct gss_channel_bindings_struct *input_chan_bindings;
+ gss_name_t server_name;
+ gss_name_t client_name;
+ OM_uint32 want_flags, got_flags;
+};
+
+static int gensec_gsskrb5_destory(void *ptr)
+{
+ struct gensec_gsskrb5_state *gensec_gsskrb5_state = ptr;
+ OM_uint32 maj_stat, min_stat;
+
+ if (gensec_gsskrb5_state->gssapi_context != GSS_C_NO_CONTEXT) {
+ maj_stat = gss_delete_sec_context (&min_stat,
+ &gensec_gsskrb5_state->gssapi_context,
+ GSS_C_NO_BUFFER);
+ }
+
+ if (gensec_gsskrb5_state->server_name != GSS_C_NO_NAME) {
+ maj_stat = gss_release_name(&min_stat, &gensec_gsskrb5_state->server_name);
+ }
+ if (gensec_gsskrb5_state->client_name != GSS_C_NO_NAME) {
+ maj_stat = gss_release_name(&min_stat, &gensec_gsskrb5_state->client_name);
+ }
+ return 0;
+}
+
+static NTSTATUS gensec_gsskrb5_start(struct gensec_security *gensec_security)
+{
+ struct gensec_gsskrb5_state *gensec_gsskrb5_state;
+
+ gensec_gsskrb5_state = talloc(gensec_security, struct gensec_gsskrb5_state);
+ if (!gensec_gsskrb5_state) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ gensec_security->private_data = gensec_gsskrb5_state;
+
+ gensec_gsskrb5_state->gssapi_context = GSS_C_NO_CONTEXT;
+ gensec_gsskrb5_state->server_name = GSS_C_NO_NAME;
+ gensec_gsskrb5_state->client_name = GSS_C_NO_NAME;
+
+ talloc_set_destructor(gensec_gsskrb5_state, gensec_gsskrb5_destory);
+
+ /* TODO: Fill in channel bindings */
+ gensec_gsskrb5_state->input_chan_bindings = GSS_C_NO_CHANNEL_BINDINGS;
+
+ gensec_gsskrb5_state->want_flags = GSS_C_MUTUAL_FLAG;
+ gensec_gsskrb5_state->got_flags = 0;
+
+ if (gensec_security->want_features & GENSEC_FEATURE_SESSION_KEY) {
+ /* GSSAPI won't give us the session keys */
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ if (gensec_security->want_features & GENSEC_FEATURE_SIGN) {
+ gensec_gsskrb5_state->want_flags |= GSS_C_INTEG_FLAG;
+ }
+ if (gensec_security->want_features & GENSEC_FEATURE_SEAL) {
+ gensec_gsskrb5_state->want_flags |= GSS_C_CONF_FLAG;
+ }
+ if (gensec_security->want_features & GENSEC_FEATURE_DCE_STYLE) {
+ gensec_gsskrb5_state->want_flags |= GSS_C_DCE_STYLE;
+ }
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS gensec_gsskrb5_client_start(struct gensec_security *gensec_security)
+{
+ struct gensec_gsskrb5_state *gensec_gsskrb5_state;
+ NTSTATUS nt_status;
+ gss_buffer_desc name_token;
+ OM_uint32 maj_stat, min_stat;
+
+ gss_OID_desc hostbased = {10,
+ (void *)discard_const_p(char, "\x2a\x86\x48\x86\xf7\x12"
+ "\x01\x02\x01\x04")};
+
+ nt_status = gensec_gsskrb5_start(gensec_security);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ return nt_status;
+ }
+
+ gensec_gsskrb5_state = gensec_security->private_data;
+
+ gensec_gsskrb5_state->state_position = GENSEC_GSSKRB5_CLIENT_START;
+
+ name_token.value = talloc_asprintf(gensec_gsskrb5_state, "%s@%s", gensec_get_target_service(gensec_security),
+ gensec_get_target_hostname(gensec_security));
+ DEBUG(0, ("name: %s\n", (char *)name_token.value));
+ name_token.length = strlen(name_token.value);
+
+ maj_stat = gss_import_name (&min_stat,
+ &name_token,
+ &hostbased,
+ &gensec_gsskrb5_state->server_name);
+ if (maj_stat) {
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ return NT_STATUS_OK;
+}
+
+/**
+ * Next state function for the GSSKRB5 GENSEC mechanism
+ *
+ * @param gensec_gsskrb5_state GSSAPI State
+ * @param out_mem_ctx The TALLOC_CTX for *out to be allocated on
+ * @param in The request, as a DATA_BLOB
+ * @param out The reply, as an talloc()ed DATA_BLOB, on *out_mem_ctx
+ * @return Error, MORE_PROCESSING_REQUIRED if a reply is sent,
+ * or NT_STATUS_OK if the user is authenticated.
+ */
+
+static NTSTATUS gensec_gsskrb5_update(struct gensec_security *gensec_security,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out)
+{
+ struct gensec_gsskrb5_state *gensec_gsskrb5_state = gensec_security->private_data;
+ NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
+ OM_uint32 maj_stat, min_stat;
+ OM_uint32 min_stat2;
+ gss_buffer_desc input_token, output_token;
+
+ *out = data_blob(NULL, 0);
+
+ input_token.length = in.length;
+ input_token.value = in.data;
+
+ switch (gensec_gsskrb5_state->state_position) {
+ case GENSEC_GSSKRB5_CLIENT_START:
+ {
+ maj_stat = gss_init_sec_context(&min_stat,
+ GSS_C_NO_CREDENTIAL,
+ &gensec_gsskrb5_state->gssapi_context,
+ gensec_gsskrb5_state->server_name,
+ discard_const_p(gss_OID_desc, &gensec_gss_krb5_mechanism_oid_desc),
+ gensec_gsskrb5_state->want_flags,
+ 0,
+ gensec_gsskrb5_state->input_chan_bindings,
+ &input_token,
+ NULL,
+ &output_token,
+ &gensec_gsskrb5_state->got_flags, /* ret flags */
+ NULL);
+ *out = data_blob_talloc(out_mem_ctx, output_token.value, output_token.length);
+ if (out->length != output_token.length) {
+ gss_release_buffer(&min_stat2, &output_token);
+ return NT_STATUS_NO_MEMORY;
+ }
+ gss_release_buffer(&min_stat2, &output_token);
+
+ if (maj_stat == GSS_S_COMPLETE) {
+ gensec_gsskrb5_state->state_position = GENSEC_GSSKRB5_DONE;
+ return NT_STATUS_OK;
+ } else if (maj_stat == GSS_S_CONTINUE_NEEDED) {
+ gensec_gsskrb5_state->state_position = GENSEC_GSSKRB5_CLIENT_MUTUAL_AUTH;
+ return NT_STATUS_MORE_PROCESSING_REQUIRED;
+ } else {
+ gss_buffer_desc msg1, msg2;
+ OM_uint32 msg_ctx = 0;
+
+ msg1.value = NULL;
+ msg2.value = NULL;
+ gss_display_status(&min_stat2, maj_stat, GSS_C_GSS_CODE,
+ GSS_C_NULL_OID, &msg_ctx, &msg1);
+ gss_display_status(&min_stat2, min_stat, GSS_C_MECH_CODE,
+ GSS_C_NULL_OID, &msg_ctx, &msg2);
+ DEBUG(1, ("gensec_gsskrb5_update: %s : %s\n", (char *)msg1.value, (char *)msg2.value));
+ gss_release_buffer(&min_stat2, &msg1);
+ gss_release_buffer(&min_stat2, &msg2);
+
+ return nt_status;
+ }
+ break;
+ }
+ case GENSEC_GSSKRB5_CLIENT_MUTUAL_AUTH:
+ {
+ maj_stat = gss_init_sec_context(&min_stat,
+ GSS_C_NO_CREDENTIAL,
+ &gensec_gsskrb5_state->gssapi_context,
+ gensec_gsskrb5_state->server_name,
+ discard_const_p(gss_OID_desc, &gensec_gss_krb5_mechanism_oid_desc),
+ gensec_gsskrb5_state->want_flags,
+ 0,
+ gensec_gsskrb5_state->input_chan_bindings,
+ &input_token,
+ NULL,
+ &output_token,
+ &gensec_gsskrb5_state->got_flags, /* ret flags */
+ NULL);
+ *out = data_blob_talloc(out_mem_ctx, output_token.value, output_token.length);
+ if (out->length != output_token.length) {
+ gss_release_buffer(&min_stat2, &output_token);
+ return NT_STATUS_NO_MEMORY;
+ }
+ gss_release_buffer(&min_stat2, &output_token);
+
+ if (maj_stat == GSS_S_COMPLETE) {
+ if (gensec_gsskrb5_state->got_flags & GSS_C_DCE_STYLE) {
+ gensec_gsskrb5_state->state_position = GENSEC_GSSKRB5_CLIENT_DCE_STYLE;
+ return NT_STATUS_MORE_PROCESSING_REQUIRED;
+ }
+ gensec_gsskrb5_state->state_position = GENSEC_GSSKRB5_DONE;
+ return NT_STATUS_OK;
+ } else if (maj_stat == GSS_S_CONTINUE_NEEDED) {
+ gensec_gsskrb5_state->state_position = GENSEC_GSSKRB5_CLIENT_DCE_STYLE;
+ return NT_STATUS_MORE_PROCESSING_REQUIRED;
+ } else {
+ gss_buffer_desc msg1, msg2;
+ OM_uint32 msg_ctx = 0;
+
+ msg1.value = NULL;
+ msg2.value = NULL;
+ gss_display_status(&min_stat2, maj_stat, GSS_C_GSS_CODE,
+ GSS_C_NULL_OID, &msg_ctx, &msg1);
+ gss_display_status(&min_stat2, min_stat, GSS_C_MECH_CODE,
+ GSS_C_NULL_OID, &msg_ctx, &msg2);
+ DEBUG(1, ("gensec_gsskrb5_update: %s : %s\n", (char *)msg1.value, (char *)msg2.value));
+ gss_release_buffer(&min_stat2, &msg1);
+ gss_release_buffer(&min_stat2, &msg2);
+
+ return nt_status;
+ }
+ break;
+ }
+ case GENSEC_GSSKRB5_CLIENT_DCE_STYLE:
+ {
+ gensec_gsskrb5_state->state_position = GENSEC_GSSKRB5_DONE;
+ return NT_STATUS_OK;
+ }
+ case GENSEC_GSSKRB5_DONE:
+ {
+ return NT_STATUS_OK;
+ }
+ default:
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ return NT_STATUS_INVALID_PARAMETER;
+}
+
+static NTSTATUS gensec_gsskrb5_wrap(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out)
+{
+ struct gensec_gsskrb5_state *gensec_gsskrb5_state = gensec_security->private_data;
+ OM_uint32 maj_stat, min_stat;
+ gss_buffer_desc input_token, output_token;
+ int conf_state;
+ input_token.length = in->length;
+ input_token.value = in->data;
+
+ maj_stat = gss_wrap(&min_stat,
+ gensec_gsskrb5_state->gssapi_context,
+ gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL),
+ GSS_C_QOP_DEFAULT,
+ &input_token,
+ &conf_state,
+ &output_token);
+ if (GSS_ERROR(maj_stat)) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ *out = data_blob_talloc(mem_ctx, output_token.value, output_token.length);
+
+ gss_release_buffer(&min_stat, &output_token);
+
+ if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)
+ && !conf_state) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS gensec_gsskrb5_unwrap(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out)
+{
+ struct gensec_gsskrb5_state *gensec_gsskrb5_state = gensec_security->private_data;
+ OM_uint32 maj_stat, min_stat;
+ gss_buffer_desc input_token, output_token;
+ int conf_state;
+ gss_qop_t qop_state;
+ input_token.length = in->length;
+ input_token.value = in->data;
+
+ maj_stat = gss_unwrap(&min_stat,
+ gensec_gsskrb5_state->gssapi_context,
+ &input_token,
+ &output_token,
+ &conf_state,
+ &qop_state);
+ if (GSS_ERROR(maj_stat)) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ *out = data_blob_talloc(mem_ctx, output_token.value, output_token.length);
+
+ gss_release_buffer(&min_stat, &output_token);
+
+ if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)
+ && !conf_state) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ return NT_STATUS_OK;
+}
+
+static size_t gensec_gsskrb5_sig_size(struct gensec_security *gensec_security)
+{
+ /* not const but work for DCERPC packets and arcfour */
+ return 45;
+}
+
+static NTSTATUS gensec_gsskrb5_seal_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ struct gensec_gsskrb5_state *gensec_gsskrb5_state = gensec_security->private_data;
+ OM_uint32 maj_stat, min_stat;
+ gss_buffer_desc input_token, output_token;
+ int conf_state;
+ ssize_t sig_length = 0;
+
+ input_token.length = length;
+ input_token.value = data;
+
+ maj_stat = gss_wrap(&min_stat,
+ gensec_gsskrb5_state->gssapi_context,
+ gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL),
+ GSS_C_QOP_DEFAULT,
+ &input_token,
+ &conf_state,
+ &output_token);
+ if (GSS_ERROR(maj_stat)) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ if (output_token.length < length) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ sig_length = 45;
+
+ memcpy(data, ((uint8_t *)output_token.value) + sig_length, length);
+ *sig = data_blob_talloc(mem_ctx, (uint8_t *)output_token.value, sig_length);
+
+DEBUG(0,("gensec_gsskrb5_seal_packet: siglen: %d inlen: %d, wrap_len: %d\n", sig->length, length, output_token.length - sig_length));
+dump_data(0,sig->data, sig->length);
+dump_data(0,data, length);
+dump_data(0,((uint8_t *)output_token.value) + sig_length, output_token.length - sig_length);
+
+ gss_release_buffer(&min_stat, &output_token);
+
+ if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)
+ && !conf_state) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS gensec_gsskrb5_unseal_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ struct gensec_gsskrb5_state *gensec_gsskrb5_state = gensec_security->private_data;
+ OM_uint32 maj_stat, min_stat;
+ gss_buffer_desc input_token, output_token;
+ int conf_state;
+ gss_qop_t qop_state;
+ DATA_BLOB in;
+
+DEBUG(0,("gensec_gsskrb5_unseal_packet: siglen: %d\n", sig->length));
+dump_data(0,sig->data, sig->length);
+
+ in = data_blob_talloc(mem_ctx, NULL, sig->length + length);
+
+ memcpy(in.data, sig->data, sig->length);
+ memcpy(in.data + sig->length, data, length);
+
+ input_token.length = in.length;
+ input_token.value = in.data;
+
+ maj_stat = gss_unwrap(&min_stat,
+ gensec_gsskrb5_state->gssapi_context,
+ &input_token,
+ &output_token,
+ &conf_state,
+ &qop_state);
+ if (GSS_ERROR(maj_stat)) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ if (output_token.length != length) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ memcpy(data, output_token.value, length);
+
+ gss_release_buffer(&min_stat, &output_token);
+
+ if (gensec_have_feature(gensec_security, GENSEC_FEATURE_SEAL)
+ && !conf_state) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS gensec_gsskrb5_sign_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ struct gensec_gsskrb5_state *gensec_gsskrb5_state = gensec_security->private_data;
+ OM_uint32 maj_stat, min_stat;
+ gss_buffer_desc input_token, output_token;
+ int conf_state;
+ ssize_t sig_length = 0;
+
+ input_token.length = length;
+ input_token.value = data;
+
+ maj_stat = gss_wrap(&min_stat,
+ gensec_gsskrb5_state->gssapi_context,
+ 0,
+ GSS_C_QOP_DEFAULT,
+ &input_token,
+ &conf_state,
+ &output_token);
+ if (GSS_ERROR(maj_stat)) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ if (output_token.length < length) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ sig_length = 45;
+
+ /*memcpy(data, ((uint8_t *)output_token.value) + sig_length, length);*/
+ *sig = data_blob_talloc(mem_ctx, (uint8_t *)output_token.value, sig_length);
+
+DEBUG(0,("gensec_gsskrb5_sign_packet: siglen: %d\n", sig->length));
+dump_data(0,sig->data, sig->length);
+
+ gss_release_buffer(&min_stat, &output_token);
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS gensec_gsskrb5_check_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ const DATA_BLOB *sig)
+{
+ struct gensec_gsskrb5_state *gensec_gsskrb5_state = gensec_security->private_data;
+ OM_uint32 maj_stat, min_stat;
+ gss_buffer_desc input_token, output_token;
+ int conf_state;
+ gss_qop_t qop_state;
+ DATA_BLOB in;
+
+DEBUG(0,("gensec_gsskrb5_check_packet: siglen: %d\n", sig->length));
+dump_data(0,sig->data, sig->length);
+
+ in = data_blob_talloc(mem_ctx, NULL, sig->length + length);
+
+ memcpy(in.data, sig->data, sig->length);
+ memcpy(in.data + sig->length, data, length);
+
+ input_token.length = in.length;
+ input_token.value = in.data;
+
+ maj_stat = gss_unwrap(&min_stat,
+ gensec_gsskrb5_state->gssapi_context,
+ &input_token,
+ &output_token,
+ &conf_state,
+ &qop_state);
+ if (GSS_ERROR(maj_stat)) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ if (output_token.length != length) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ /*memcpy(data, output_token.value, length);*/
+
+ gss_release_buffer(&min_stat, &output_token);
+
+ return NT_STATUS_OK;
+}
+
+static BOOL gensec_gsskrb5_have_feature(struct gensec_security *gensec_security,
+ uint32_t feature)
+{
+ struct gensec_gsskrb5_state *gensec_gsskrb5_state = gensec_security->private_data;
+ if (feature & GENSEC_FEATURE_SIGN) {
+ return gensec_gsskrb5_state->got_flags & GSS_C_INTEG_FLAG;
+ }
+ if (feature & GENSEC_FEATURE_SEAL) {
+ return gensec_gsskrb5_state->got_flags & GSS_C_CONF_FLAG;
+ }
+ return False;
+}
+
+static const struct gensec_security_ops gensec_gsskrb5_security_ops = {
+ .name = "gsskrb5",
+ .auth_type = DCERPC_AUTH_TYPE_KRB5,
+ .oid = GENSEC_OID_KERBEROS5,
+ .client_start = gensec_gsskrb5_client_start,
+ .update = gensec_gsskrb5_update,
+ .sig_size = gensec_gsskrb5_sig_size,
+ .sign_packet = gensec_gsskrb5_sign_packet,
+ .check_packet = gensec_gsskrb5_check_packet,
+ .seal_packet = gensec_gsskrb5_seal_packet,
+ .unseal_packet = gensec_gsskrb5_unseal_packet,
+ .wrap = gensec_gsskrb5_wrap,
+ .unwrap = gensec_gsskrb5_unwrap,
+ .have_feature = gensec_gsskrb5_have_feature,
+ .enabled = False
+};
+
+NTSTATUS gensec_gsskrb5_init(void)
+{
+ NTSTATUS ret;
+
+ ret = gensec_register(&gensec_gsskrb5_security_ops);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(0,("Failed to register '%s' gensec backend!\n",
+ gensec_gsskrb5_security_ops.name));
+ return ret;
+ }
+
+ return ret;
+}
diff --git a/source4/auth/gensec/gensec_krb5.c b/source4/auth/gensec/gensec_krb5.c
new file mode 100644
index 0000000000..bad143f3c8
--- /dev/null
+++ b/source4/auth/gensec/gensec_krb5.c
@@ -0,0 +1,751 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ Kerberos backend for GENSEC
+
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004
+ Copyright (C) Andrew Tridgell 2001
+ Copyright (C) Luke Howard 2002-2003
+ Copyright (C) Stefan Metzmacher 2004-2005
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "system/kerberos.h"
+#include "system/time.h"
+#include "auth/kerberos/kerberos.h"
+#include "librpc/gen_ndr/ndr_krb5pac.h"
+#include "auth/auth.h"
+
+enum GENSEC_KRB5_STATE {
+ GENSEC_KRB5_SERVER_START,
+ GENSEC_KRB5_CLIENT_START,
+ GENSEC_KRB5_CLIENT_MUTUAL_AUTH,
+ GENSEC_KRB5_DONE
+};
+
+struct gensec_krb5_state {
+ DATA_BLOB session_key;
+ DATA_BLOB pac;
+ enum GENSEC_KRB5_STATE state_position;
+ krb5_context context;
+ krb5_auth_context auth_context;
+ krb5_ccache ccache;
+ krb5_data ticket;
+ krb5_keyblock keyblock;
+ char *peer_principal;
+};
+
+#ifdef KRB5_DO_VERIFY_PAC
+static NTSTATUS gensec_krb5_pac_checksum(DATA_BLOB pac_data,
+ struct PAC_SIGNATURE_DATA *sig,
+ struct gensec_krb5_state *gensec_krb5_state,
+ uint32 keyusage)
+{
+ krb5_error_code ret;
+ krb5_crypto crypto;
+ Checksum cksum;
+ int i;
+
+ cksum.cksumtype = (CKSUMTYPE)sig->type;
+ cksum.checksum.length = sizeof(sig->signature);
+ cksum.checksum.data = sig->signature;
+
+
+ ret = krb5_crypto_init(gensec_krb5_state->context,
+ &gensec_krb5_state->keyblock,
+ 0,
+ &crypto);
+ if (ret) {
+ DEBUG(0,("krb5_crypto_init() failed\n"));
+ return NT_STATUS_FOOBAR;
+ }
+ for (i=0; i < 40; i++) {
+ keyusage = i;
+ ret = krb5_verify_checksum(gensec_krb5_state->context,
+ crypto,
+ keyusage,
+ pac_data.data,
+ pac_data.length,
+ &cksum);
+ if (!ret) {
+ DEBUG(0,("PAC Verified: keyusage: %d\n", keyusage));
+ break;
+ }
+ }
+ krb5_crypto_destroy(gensec_krb5_state->context, crypto);
+
+ if (ret) {
+ DEBUG(0,("NOT verifying PAC checksums yet!\n"));
+ //return NT_STATUS_LOGON_FAILURE;
+ } else {
+ DEBUG(0,("PAC checksums verified!\n"));
+ }
+
+ return NT_STATUS_OK;
+}
+#endif
+
+static NTSTATUS gensec_krb5_decode_pac(TALLOC_CTX *mem_ctx,
+ struct PAC_LOGON_INFO **logon_info_out,
+ DATA_BLOB blob,
+ struct gensec_krb5_state *gensec_krb5_state)
+{
+ NTSTATUS status;
+ struct PAC_SIGNATURE_DATA srv_sig;
+ struct PAC_SIGNATURE_DATA *srv_sig_ptr;
+ struct PAC_SIGNATURE_DATA kdc_sig;
+ struct PAC_SIGNATURE_DATA *kdc_sig_ptr;
+ struct PAC_LOGON_INFO *logon_info = NULL;
+ struct PAC_DATA pac_data;
+#ifdef KRB5_DO_VERIFY_PAC
+ DATA_BLOB tmp_blob = data_blob(NULL, 0);
+#endif
+ int i;
+
+ status = ndr_pull_struct_blob(&blob, mem_ctx, &pac_data,
+ (ndr_pull_flags_fn_t)ndr_pull_PAC_DATA);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("can't parse the PAC\n"));
+ return status;
+ }
+ NDR_PRINT_DEBUG(PAC_DATA, &pac_data);
+
+ if (pac_data.num_buffers < 3) {
+ /* we need logon_ingo, service_key and kdc_key */
+ DEBUG(0,("less than 3 PAC buffers\n"));
+ return NT_STATUS_FOOBAR;
+ }
+
+ for (i=0; i < pac_data.num_buffers; i++) {
+ switch (pac_data.buffers[i].type) {
+ case PAC_TYPE_LOGON_INFO:
+ if (!pac_data.buffers[i].info) {
+ break;
+ }
+ logon_info = &pac_data.buffers[i].info->logon_info;
+ break;
+ case PAC_TYPE_SRV_CHECKSUM:
+ if (!pac_data.buffers[i].info) {
+ break;
+ }
+ srv_sig_ptr = &pac_data.buffers[i].info->srv_cksum;
+ srv_sig = pac_data.buffers[i].info->srv_cksum;
+ break;
+ case PAC_TYPE_KDC_CHECKSUM:
+ if (!pac_data.buffers[i].info) {
+ break;
+ }
+ kdc_sig_ptr = &pac_data.buffers[i].info->kdc_cksum;
+ kdc_sig = pac_data.buffers[i].info->kdc_cksum;
+ break;
+ case PAC_TYPE_UNKNOWN_10:
+ break;
+ default:
+ break;
+ }
+ }
+
+ if (!logon_info) {
+ DEBUG(0,("PAC no logon_info\n"));
+ return NT_STATUS_FOOBAR;
+ }
+
+ if (!srv_sig_ptr) {
+ DEBUG(0,("PAC no srv_key\n"));
+ return NT_STATUS_FOOBAR;
+ }
+
+ if (!kdc_sig_ptr) {
+ DEBUG(0,("PAC no kdc_key\n"));
+ return NT_STATUS_FOOBAR;
+ }
+#ifdef KRB5_DO_VERIFY_PAC
+ /* clear the kdc_key */
+/* memset((void *)kdc_sig_ptr , '\0', sizeof(*kdc_sig_ptr));*/
+
+ status = ndr_push_struct_blob(&tmp_blob, mem_ctx, &pac_data,
+ (ndr_push_flags_fn_t)ndr_push_PAC_DATA);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+ status = ndr_pull_struct_blob(&tmp_blob, mem_ctx, &pac_data,
+ (ndr_pull_flags_fn_t)ndr_pull_PAC_DATA);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("can't parse the PAC\n"));
+ return status;
+ }
+ /*NDR_PRINT_DEBUG(PAC_DATA, &pac_data);*/
+
+ /* verify by kdc_key */
+ status = gensec_krb5_pac_checksum(tmp_blob, &kdc_sig, gensec_krb5_state, 0);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ /* clear the service_key */
+/* memset((void *)srv_sig_ptr , '\0', sizeof(*srv_sig_ptr));*/
+
+ status = ndr_push_struct_blob(&tmp_blob, mem_ctx, &pac_data,
+ (ndr_push_flags_fn_t)ndr_push_PAC_DATA);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+ status = ndr_pull_struct_blob(&tmp_blob, mem_ctx, &pac_data,
+ (ndr_pull_flags_fn_t)ndr_pull_PAC_DATA);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(0,("can't parse the PAC\n"));
+ return status;
+ }
+ NDR_PRINT_DEBUG(PAC_DATA, &pac_data);
+
+ /* verify by servie_key */
+ status = gensec_krb5_pac_checksum(tmp_blob, &srv_sig, gensec_krb5_state, 0);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+#endif
+ DEBUG(0,("account_name: %s [%s]\n",logon_info->info3.base.account_name.string, logon_info->info3.base.full_name.string));
+ *logon_info_out = logon_info;
+
+ return status;
+}
+
+static int gensec_krb5_destory(void *ptr)
+{
+ struct gensec_krb5_state *gensec_krb5_state = ptr;
+
+ if (gensec_krb5_state->ticket.length) {
+ kerberos_free_data_contents(gensec_krb5_state->context, &gensec_krb5_state->ticket);
+ }
+ if (gensec_krb5_state->ccache) {
+ /* current heimdal - 0.6.3, which we need anyway, fixes segfaults here */
+ krb5_cc_close(gensec_krb5_state->context, gensec_krb5_state->ccache);
+ }
+
+ krb5_free_keyblock_contents(gensec_krb5_state->context,
+ &gensec_krb5_state->keyblock);
+
+ if (gensec_krb5_state->auth_context) {
+ krb5_auth_con_free(gensec_krb5_state->context,
+ gensec_krb5_state->auth_context);
+ }
+
+ if (gensec_krb5_state->context) {
+ krb5_free_context(gensec_krb5_state->context);
+ }
+ return 0;
+}
+
+static NTSTATUS gensec_krb5_start(struct gensec_security *gensec_security)
+{
+ struct gensec_krb5_state *gensec_krb5_state;
+ krb5_error_code ret = 0;
+
+ gensec_krb5_state = talloc(gensec_security, struct gensec_krb5_state);
+ if (!gensec_krb5_state) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ gensec_security->private_data = gensec_krb5_state;
+
+ initialize_krb5_error_table();
+ gensec_krb5_state->context = NULL;
+ gensec_krb5_state->auth_context = NULL;
+ gensec_krb5_state->ccache = NULL;
+ ZERO_STRUCT(gensec_krb5_state->ticket);
+ ZERO_STRUCT(gensec_krb5_state->keyblock);
+ gensec_krb5_state->session_key = data_blob(NULL, 0);
+ gensec_krb5_state->pac = data_blob(NULL, 0);
+
+ talloc_set_destructor(gensec_krb5_state, gensec_krb5_destory);
+
+ ret = krb5_init_context(&gensec_krb5_state->context);
+ if (ret) {
+ DEBUG(1,("gensec_krb5_start: krb5_init_context failed (%s)\n", error_message(ret)));
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ if (lp_realm() && *lp_realm()) {
+ ret = krb5_set_default_realm(gensec_krb5_state->context, lp_realm());
+ if (ret) {
+ DEBUG(1,("gensec_krb5_start: krb5_set_default_realm failed (%s)\n", error_message(ret)));
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+ }
+
+ ret = krb5_auth_con_init(gensec_krb5_state->context, &gensec_krb5_state->auth_context);
+ if (ret) {
+ DEBUG(1,("gensec_krb5_start: krb5_auth_con_init failed (%s)\n", error_message(ret)));
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS gensec_krb5_server_start(struct gensec_security *gensec_security)
+{
+ NTSTATUS nt_status;
+ struct gensec_krb5_state *gensec_krb5_state;
+
+ nt_status = gensec_krb5_start(gensec_security);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ return nt_status;
+ }
+
+ gensec_krb5_state = gensec_security->private_data;
+ gensec_krb5_state->state_position = GENSEC_KRB5_SERVER_START;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS gensec_krb5_client_start(struct gensec_security *gensec_security)
+{
+ struct gensec_krb5_state *gensec_krb5_state;
+ krb5_error_code ret;
+ NTSTATUS nt_status;
+ const char *hostname = gensec_get_target_hostname(gensec_security);
+ if (!hostname) {
+ DEBUG(1, ("Could not determine hostname for target computer, cannot use kerberos\n"));
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ nt_status = gensec_krb5_start(gensec_security);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ return nt_status;
+ }
+
+ gensec_krb5_state = gensec_security->private_data;
+ gensec_krb5_state->state_position = GENSEC_KRB5_CLIENT_START;
+
+ /* TODO: This is effecivly a static/global variable...
+
+ TODO: If the user set a username, we should use an in-memory CCACHE (see below)
+ */
+ ret = krb5_cc_default(gensec_krb5_state->context, &gensec_krb5_state->ccache);
+ if (ret) {
+ DEBUG(1,("krb5_cc_default failed (%s)\n",
+ error_message(ret)));
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ while (1) {
+ {
+ krb5_data in_data;
+ in_data.length = 0;
+
+ ret = krb5_mk_req(gensec_krb5_state->context,
+ &gensec_krb5_state->auth_context,
+ AP_OPTS_USE_SUBKEY | AP_OPTS_MUTUAL_REQUIRED,
+ gensec_get_target_service(gensec_security),
+ hostname,
+ &in_data, gensec_krb5_state->ccache,
+ &gensec_krb5_state->ticket);
+
+ }
+ switch (ret) {
+ case 0:
+ return NT_STATUS_OK;
+ case KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN:
+ DEBUG(3, ("Server [%s] is not registered with our KDC: %s\n",
+ hostname, error_message(ret)));
+ return NT_STATUS_ACCESS_DENIED;
+ case KRB5KDC_ERR_PREAUTH_FAILED:
+ case KRB5KRB_AP_ERR_TKT_EXPIRED:
+ case KRB5_CC_END:
+ /* Too much clock skew - we will need to kinit to re-skew the clock */
+ case KRB5KRB_AP_ERR_SKEW:
+ case KRB5_KDCREP_SKEW:
+ {
+ DEBUG(3, ("kerberos (mk_req) failed: %s\n",
+ error_message(ret)));
+ /* fall down to remaining code */
+ }
+
+
+ /* just don't print a message for these really ordinary messages */
+ case KRB5_FCC_NOFILE:
+ case KRB5_CC_NOTFOUND:
+ case ENOENT:
+
+ {
+ const char *password;
+ char *ccache_string;
+ time_t kdc_time = 0;
+ password = cli_credentials_get_password(gensec_security->credentials);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ return nt_status;
+ }
+
+ /* this string should be unique */
+ ccache_string = talloc_asprintf(gensec_krb5_state, "MEMORY:%s:%s:%s",
+ cli_credentials_get_principal(gensec_security->credentials, gensec_krb5_state),
+ gensec_get_target_hostname(gensec_security),
+ generate_random_str(gensec_krb5_state, 16));
+
+ ret = krb5_cc_resolve(gensec_krb5_state->context, ccache_string, &gensec_krb5_state->ccache);
+ if (ret) {
+ DEBUG(1,("failed to generate a new krb5 keytab (%s): %s\n",
+ ccache_string,
+ error_message(ret)));
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ ret = kerberos_kinit_password_cc(gensec_krb5_state->context, gensec_krb5_state->ccache,
+ cli_credentials_get_principal(gensec_security->credentials, gensec_krb5_state),
+ password, NULL, &kdc_time);
+
+ /* cope with ticket being in the future due to clock skew */
+ if ((unsigned)kdc_time > time(NULL)) {
+ time_t t = time(NULL);
+ int time_offset =(unsigned)kdc_time-t;
+ DEBUG(4,("Advancing clock by %d seconds to cope with clock skew\n", time_offset));
+ krb5_set_real_time(gensec_krb5_state->context, t + time_offset + 1, 0);
+ break;
+ }
+
+ if (ret == KRB5KRB_AP_ERR_SKEW || ret == KRB5_KDCREP_SKEW) {
+ DEBUG(1,("kinit for %s failed (%s)\n",
+ cli_credentials_get_principal(gensec_security->credentials, gensec_krb5_state),
+ error_message(ret)));
+ return NT_STATUS_TIME_DIFFERENCE_AT_DC;
+ }
+ if (ret) {
+ DEBUG(1,("kinit for %s failed (%s)\n",
+ cli_credentials_get_principal(gensec_security->credentials, gensec_krb5_state),
+ error_message(ret)));
+ return NT_STATUS_WRONG_PASSWORD;
+ }
+ break;
+ }
+ default:
+ DEBUG(0, ("kerberos: %s\n",
+ error_message(ret)));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+ }
+}
+
+
+/**
+ * Next state function for the Krb5 GENSEC mechanism
+ *
+ * @param gensec_krb5_state KRB5 State
+ * @param out_mem_ctx The TALLOC_CTX for *out to be allocated on
+ * @param in The request, as a DATA_BLOB
+ * @param out The reply, as an talloc()ed DATA_BLOB, on *out_mem_ctx
+ * @return Error, MORE_PROCESSING_REQUIRED if a reply is sent,
+ * or NT_STATUS_OK if the user is authenticated.
+ */
+
+static NTSTATUS gensec_krb5_update(struct gensec_security *gensec_security,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out)
+{
+ struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
+ krb5_error_code ret = 0;
+ DATA_BLOB pac;
+ NTSTATUS nt_status;
+
+ switch (gensec_krb5_state->state_position) {
+ case GENSEC_KRB5_CLIENT_START:
+ {
+ if (ret) {
+ DEBUG(1,("ads_krb5_mk_req (request ticket) failed (%s)\n",
+ error_message(ret)));
+ nt_status = NT_STATUS_LOGON_FAILURE;
+ } else {
+ DATA_BLOB unwrapped_out;
+
+#ifndef GENSEC_SEND_UNWRAPPED_KRB5 /* This should be a switch for the torture code to set */
+ unwrapped_out = data_blob_talloc(out_mem_ctx, gensec_krb5_state->ticket.data, gensec_krb5_state->ticket.length);
+
+ /* wrap that up in a nice GSS-API wrapping */
+ *out = gensec_gssapi_gen_krb5_wrap(out_mem_ctx, &unwrapped_out, TOK_ID_KRB_AP_REQ);
+#else
+ *out = data_blob_talloc(out_mem_ctx, gensec_krb5_state->ticket.data, gensec_krb5_state->ticket.length);
+#endif
+ gensec_krb5_state->state_position = GENSEC_KRB5_CLIENT_MUTUAL_AUTH;
+ nt_status = NT_STATUS_MORE_PROCESSING_REQUIRED;
+ }
+
+ return nt_status;
+ }
+
+ case GENSEC_KRB5_CLIENT_MUTUAL_AUTH:
+ {
+ krb5_data inbuf;
+ krb5_ap_rep_enc_part *repl = NULL;
+ uint8_t tok_id[2];
+ DATA_BLOB unwrapped_in;
+
+ if (!gensec_gssapi_parse_krb5_wrap(out_mem_ctx, &in, &unwrapped_in, tok_id)) {
+ DEBUG(1,("gensec_gssapi_parse_krb5_wrap(mutual authentication) failed to parse\n"));
+ dump_data_pw("Mutual authentication message:\n", in.data, in.length);
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ /* TODO: check the tok_id */
+
+ inbuf.data = unwrapped_in.data;
+ inbuf.length = unwrapped_in.length;
+ ret = krb5_rd_rep(gensec_krb5_state->context,
+ gensec_krb5_state->auth_context,
+ &inbuf, &repl);
+ if (ret) {
+ DEBUG(1,("krb5_rd_rep (mutual authentication) failed (%s)\n",
+ error_message(ret)));
+ dump_data_pw("Mutual authentication message:\n", inbuf.data, inbuf.length);
+ nt_status = NT_STATUS_ACCESS_DENIED;
+ } else {
+ *out = data_blob(NULL, 0);
+ nt_status = NT_STATUS_OK;
+ gensec_krb5_state->state_position = GENSEC_KRB5_DONE;
+ }
+ if (repl) {
+ krb5_free_ap_rep_enc_part(gensec_krb5_state->context, repl);
+ }
+ return nt_status;
+ }
+
+ case GENSEC_KRB5_SERVER_START:
+ {
+ char *principal;
+ DATA_BLOB unwrapped_in;
+ DATA_BLOB unwrapped_out = data_blob(NULL, 0);
+ uint8_t tok_id[2];
+
+ if (!in.data) {
+ *out = unwrapped_out;
+ return NT_STATUS_MORE_PROCESSING_REQUIRED;
+ }
+
+ /* Parse the GSSAPI wrapping, if it's there... (win2k3 allows it to be omited) */
+ if (!gensec_gssapi_parse_krb5_wrap(out_mem_ctx, &in, &unwrapped_in, tok_id)) {
+ nt_status = ads_verify_ticket(out_mem_ctx,
+ gensec_krb5_state->context,
+ gensec_krb5_state->auth_context,
+ lp_realm(),
+ gensec_get_target_service(gensec_security), &in,
+ &principal, &pac, &unwrapped_out,
+ &gensec_krb5_state->keyblock);
+ } else {
+ /* TODO: check the tok_id */
+ nt_status = ads_verify_ticket(out_mem_ctx,
+ gensec_krb5_state->context,
+ gensec_krb5_state->auth_context,
+ lp_realm(),
+ gensec_get_target_service(gensec_security),
+ &unwrapped_in,
+ &principal, &pac, &unwrapped_out,
+ &gensec_krb5_state->keyblock);
+ }
+
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ return nt_status;
+ }
+
+ if (pac.data) {
+ gensec_krb5_state->pac = data_blob_talloc_reference(gensec_krb5_state, &pac);
+ }
+
+ if (NT_STATUS_IS_OK(nt_status)) {
+ gensec_krb5_state->state_position = GENSEC_KRB5_DONE;
+ /* wrap that up in a nice GSS-API wrapping */
+#ifndef GENSEC_SEND_UNWRAPPED_KRB5
+ *out = gensec_gssapi_gen_krb5_wrap(out_mem_ctx, &unwrapped_out, TOK_ID_KRB_AP_REP);
+#else
+ *out = unwrapped_out;
+#endif
+ gensec_krb5_state->peer_principal = talloc_steal(gensec_krb5_state, principal);
+ }
+ return nt_status;
+ }
+ case GENSEC_KRB5_DONE:
+ return NT_STATUS_OK;
+ }
+
+ return NT_STATUS_INVALID_PARAMETER;
+}
+
+static NTSTATUS gensec_krb5_session_key(struct gensec_security *gensec_security,
+ DATA_BLOB *session_key)
+{
+ struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
+ krb5_context context = gensec_krb5_state->context;
+ krb5_auth_context auth_context = gensec_krb5_state->auth_context;
+ krb5_keyblock *skey;
+ krb5_error_code err;
+
+ if (gensec_krb5_state->session_key.data) {
+ *session_key = gensec_krb5_state->session_key;
+ return NT_STATUS_OK;
+ }
+
+ switch (gensec_security->gensec_role) {
+ case GENSEC_CLIENT:
+ err = krb5_auth_con_getlocalsubkey(context, auth_context, &skey);
+ break;
+ case GENSEC_SERVER:
+ err = krb5_auth_con_getremotesubkey(context, auth_context, &skey);
+ break;
+ }
+ if (err == 0 && skey != NULL) {
+ DEBUG(10, ("Got KRB5 session key of length %d\n", KRB5_KEY_LENGTH(skey)));
+ gensec_krb5_state->session_key = data_blob_talloc(gensec_krb5_state,
+ KRB5_KEY_DATA(skey), KRB5_KEY_LENGTH(skey));
+ *session_key = gensec_krb5_state->session_key;
+ dump_data_pw("KRB5 Session Key:\n", session_key->data, session_key->length);
+
+ krb5_free_keyblock(context, skey);
+ return NT_STATUS_OK;
+ } else {
+ DEBUG(10, ("KRB5 error getting session key %d\n", err));
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+}
+
+static NTSTATUS gensec_krb5_session_info(struct gensec_security *gensec_security,
+ struct auth_session_info **_session_info)
+{
+ NTSTATUS nt_status;
+ struct gensec_krb5_state *gensec_krb5_state = gensec_security->private_data;
+ struct auth_serversupplied_info *server_info = NULL;
+ struct auth_session_info *session_info = NULL;
+ struct PAC_LOGON_INFO *logon_info;
+ char *p;
+ char *principal;
+ const char *account_name;
+ const char *realm;
+
+ principal = talloc_strdup(gensec_krb5_state, gensec_krb5_state->peer_principal);
+ NT_STATUS_HAVE_NO_MEMORY(principal);
+
+ p = strchr(principal, '@');
+ if (p) {
+ *p = '\0';
+ p++;
+ realm = p;
+ } else {
+ realm = lp_realm();
+ }
+ account_name = principal;
+
+ /* decode and verify the pac */
+ nt_status = gensec_krb5_decode_pac(gensec_krb5_state, &logon_info, gensec_krb5_state->pac,
+ gensec_krb5_state);
+
+ /* IF we have the PAC - otherwise we need to get this
+ * data from elsewere - local ldb, or (TODO) lookup of some
+ * kind...
+ *
+ * when heimdal can generate the PAC, we should fail if there's
+ * no PAC present
+ */
+
+ if (NT_STATUS_IS_OK(nt_status)) {
+ union netr_Validation validation;
+ validation.sam3 = &logon_info->info3;
+ nt_status = make_server_info_netlogon_validation(gensec_krb5_state,
+ account_name,
+ 3, &validation,
+ &server_info);
+ talloc_free(principal);
+ NT_STATUS_NOT_OK_RETURN(nt_status);
+ } else {
+ DATA_BLOB user_sess_key = data_blob(NULL, 0);
+ DATA_BLOB lm_sess_key = data_blob(NULL, 0);
+ /* TODO: should we pass the krb5 session key in here? */
+ nt_status = sam_get_server_info(gensec_krb5_state, account_name, realm,
+ user_sess_key, lm_sess_key,
+ &server_info);
+ talloc_free(principal);
+ NT_STATUS_NOT_OK_RETURN(nt_status);
+ }
+
+ /* references the server_info into the session_info */
+ nt_status = auth_generate_session_info(gensec_krb5_state, server_info, &session_info);
+ talloc_free(server_info);
+ NT_STATUS_NOT_OK_RETURN(nt_status);
+
+ nt_status = gensec_krb5_session_key(gensec_security, &session_info->session_key);
+ NT_STATUS_NOT_OK_RETURN(nt_status);
+
+ *_session_info = session_info;
+
+ return NT_STATUS_OK;
+}
+
+static BOOL gensec_krb5_have_feature(struct gensec_security *gensec_security,
+ uint32_t feature)
+{
+ if (feature & GENSEC_FEATURE_SESSION_KEY) {
+ return True;
+ }
+
+ return False;
+}
+
+
+static const struct gensec_security_ops gensec_krb5_security_ops = {
+ .name = "krb5",
+ .auth_type = DCERPC_AUTH_TYPE_KRB5,
+ .oid = GENSEC_OID_KERBEROS5,
+ .client_start = gensec_krb5_client_start,
+ .server_start = gensec_krb5_server_start,
+ .update = gensec_krb5_update,
+ .session_key = gensec_krb5_session_key,
+ .session_info = gensec_krb5_session_info,
+ .have_feature = gensec_krb5_have_feature,
+ .enabled = False
+};
+
+static const struct gensec_security_ops gensec_ms_krb5_security_ops = {
+ .name = "ms_krb5",
+ .auth_type = DCERPC_AUTH_TYPE_KRB5,
+ .oid = GENSEC_OID_KERBEROS5_OLD,
+ .client_start = gensec_krb5_client_start,
+ .server_start = gensec_krb5_server_start,
+ .update = gensec_krb5_update,
+ .session_key = gensec_krb5_session_key,
+ .session_info = gensec_krb5_session_info,
+ .have_feature = gensec_krb5_have_feature,
+ .enabled = False
+};
+
+
+NTSTATUS gensec_krb5_init(void)
+{
+ NTSTATUS ret;
+
+ ret = gensec_register(&gensec_krb5_security_ops);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(0,("Failed to register '%s' gensec backend!\n",
+ gensec_krb5_security_ops.name));
+ return ret;
+ }
+
+ ret = gensec_register(&gensec_ms_krb5_security_ops);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(0,("Failed to register '%s' gensec backend!\n",
+ gensec_krb5_security_ops.name));
+ return ret;
+ }
+
+ return ret;
+}
diff --git a/source4/auth/gensec/gensec_ntlmssp.c b/source4/auth/gensec/gensec_ntlmssp.c
new file mode 100644
index 0000000000..5955904886
--- /dev/null
+++ b/source4/auth/gensec/gensec_ntlmssp.c
@@ -0,0 +1,514 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ dcerpc authentication operations
+
+ Copyright (C) Andrew Tridgell 2003
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004
+ Copyright (C) Stefan Metzmacher 2005
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "auth/auth.h"
+
+struct gensec_ntlmssp_state {
+ struct auth_context *auth_context;
+ struct auth_serversupplied_info *server_info;
+ struct ntlmssp_state *ntlmssp_state;
+ uint32_t have_features;
+};
+
+
+/**
+ * Return the challenge as determined by the authentication subsystem
+ * @return an 8 byte random challenge
+ */
+
+static const uint8_t *auth_ntlmssp_get_challenge(const struct ntlmssp_state *ntlmssp_state)
+{
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state = ntlmssp_state->auth_context;
+ NTSTATUS status;
+ const uint8_t *chal;
+
+ status = auth_get_challenge(gensec_ntlmssp_state->auth_context, &chal);
+ if (!NT_STATUS_IS_OK(status)) {
+ return NULL;
+ }
+
+ return chal;
+}
+
+/**
+ * Some authentication methods 'fix' the challenge, so we may not be able to set it
+ *
+ * @return If the effective challenge used by the auth subsystem may be modified
+ */
+static BOOL auth_ntlmssp_may_set_challenge(const struct ntlmssp_state *ntlmssp_state)
+{
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state = ntlmssp_state->auth_context;
+
+ return auth_challenge_may_be_modified(gensec_ntlmssp_state->auth_context);
+}
+
+/**
+ * NTLM2 authentication modifies the effective challenge,
+ * @param challenge The new challenge value
+ */
+static NTSTATUS auth_ntlmssp_set_challenge(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *challenge)
+{
+ NTSTATUS nt_status;
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state = ntlmssp_state->auth_context;
+ struct auth_context *auth_context = gensec_ntlmssp_state->auth_context;
+ const uint8_t *chal;
+
+ if (challenge->length != 8) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ chal = challenge->data;
+
+ nt_status = auth_context_set_challenge(auth_context, chal, "NTLMSSP callback (NTLM2)");
+
+ return nt_status;
+}
+
+/**
+ * Check the password on an NTLMSSP login.
+ *
+ * Return the session keys used on the connection.
+ */
+
+static NTSTATUS auth_ntlmssp_check_password(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
+{
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state = ntlmssp_state->auth_context;
+ struct auth_usersupplied_info *user_info = NULL;
+ NTSTATUS nt_status;
+
+ nt_status = make_user_info_map(ntlmssp_state,
+ gensec_ntlmssp_state->ntlmssp_state->user,
+ gensec_ntlmssp_state->ntlmssp_state->domain,
+ gensec_ntlmssp_state->ntlmssp_state->workstation,
+ gensec_ntlmssp_state->ntlmssp_state->lm_resp.data ? &gensec_ntlmssp_state->ntlmssp_state->lm_resp : NULL,
+ gensec_ntlmssp_state->ntlmssp_state->nt_resp.data ? &gensec_ntlmssp_state->ntlmssp_state->nt_resp : NULL,
+ NULL, NULL, NULL, True,
+ &user_info);
+ NT_STATUS_NOT_OK_RETURN(nt_status);
+
+ nt_status = auth_check_password(gensec_ntlmssp_state->auth_context, gensec_ntlmssp_state,
+ user_info, &gensec_ntlmssp_state->server_info);
+ talloc_free(user_info);
+ NT_STATUS_NOT_OK_RETURN(nt_status);
+
+ if (gensec_ntlmssp_state->server_info->user_session_key.length) {
+ DEBUG(10, ("Got NT session key of length %u\n", gensec_ntlmssp_state->server_info->user_session_key.length));
+ *user_session_key = data_blob_talloc(ntlmssp_state,
+ gensec_ntlmssp_state->server_info->user_session_key.data,
+ gensec_ntlmssp_state->server_info->user_session_key.length);
+ }
+ if (gensec_ntlmssp_state->server_info->lm_session_key.length) {
+ DEBUG(10, ("Got LM session key of length %u\n", gensec_ntlmssp_state->server_info->lm_session_key.length));
+ *lm_session_key = data_blob_talloc(ntlmssp_state,
+ gensec_ntlmssp_state->server_info->lm_session_key.data,
+ gensec_ntlmssp_state->server_info->lm_session_key.length);
+ }
+ return nt_status;
+}
+
+static int gensec_ntlmssp_destroy(void *ptr)
+{
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state = ptr;
+
+ if (gensec_ntlmssp_state->ntlmssp_state) {
+ ntlmssp_end(&gensec_ntlmssp_state->ntlmssp_state);
+ }
+
+ return 0;
+}
+
+static NTSTATUS gensec_ntlmssp_start(struct gensec_security *gensec_security)
+{
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state;
+
+ gensec_ntlmssp_state = talloc(gensec_security, struct gensec_ntlmssp_state);
+ if (!gensec_ntlmssp_state) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ gensec_ntlmssp_state->ntlmssp_state = NULL;
+ gensec_ntlmssp_state->auth_context = NULL;
+ gensec_ntlmssp_state->server_info = NULL;
+ gensec_ntlmssp_state->have_features = 0;
+
+ talloc_set_destructor(gensec_ntlmssp_state, gensec_ntlmssp_destroy);
+
+ gensec_security->private_data = gensec_ntlmssp_state;
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS gensec_ntlmssp_server_start(struct gensec_security *gensec_security)
+{
+ NTSTATUS nt_status;
+ struct ntlmssp_state *ntlmssp_state;
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state;
+
+ nt_status = gensec_ntlmssp_start(gensec_security);
+ NT_STATUS_NOT_OK_RETURN(nt_status);
+
+ gensec_ntlmssp_state = gensec_security->private_data;
+
+ nt_status = ntlmssp_server_start(gensec_ntlmssp_state, &gensec_ntlmssp_state->ntlmssp_state);
+ NT_STATUS_NOT_OK_RETURN(nt_status);
+
+ if (gensec_security->want_features & GENSEC_FEATURE_SIGN) {
+ gensec_ntlmssp_state->ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
+ }
+ if (gensec_security->want_features & GENSEC_FEATURE_SEAL) {
+ gensec_ntlmssp_state->ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL;
+ }
+
+ nt_status = auth_context_create(gensec_ntlmssp_state, lp_auth_methods(), &gensec_ntlmssp_state->auth_context);
+ NT_STATUS_NOT_OK_RETURN(nt_status);
+
+ ntlmssp_state = gensec_ntlmssp_state->ntlmssp_state;
+ ntlmssp_state->auth_context = gensec_ntlmssp_state;
+ ntlmssp_state->get_challenge = auth_ntlmssp_get_challenge;
+ ntlmssp_state->may_set_challenge = auth_ntlmssp_may_set_challenge;
+ ntlmssp_state->set_challenge = auth_ntlmssp_set_challenge;
+ ntlmssp_state->check_password = auth_ntlmssp_check_password;
+ ntlmssp_state->server_role = lp_server_role();
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS gensec_ntlmssp_client_start(struct gensec_security *gensec_security)
+{
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state;
+ const char *password = NULL;
+ NTSTATUS nt_status;
+
+ nt_status = gensec_ntlmssp_start(gensec_security);
+ NT_STATUS_NOT_OK_RETURN(nt_status);
+
+ gensec_ntlmssp_state = gensec_security->private_data;
+ nt_status = ntlmssp_client_start(gensec_ntlmssp_state,
+ &gensec_ntlmssp_state->ntlmssp_state);
+ NT_STATUS_NOT_OK_RETURN(nt_status);
+
+ if (gensec_security->want_features & GENSEC_FEATURE_SESSION_KEY) {
+ /*
+ * We need to set this to allow a later SetPassword
+ * via the SAMR pipe to succeed. Strange.... We could
+ * also add NTLMSSP_NEGOTIATE_SEAL here. JRA.
+ *
+ * Without this, Windows will not create the master key
+ * that it thinks is only used for NTLMSSP signing and
+ * sealing. (It is actually pulled out and used directly)
+ */
+ gensec_ntlmssp_state->ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
+ }
+ if (gensec_security->want_features & GENSEC_FEATURE_SIGN) {
+ gensec_ntlmssp_state->ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SIGN;
+ }
+ if (gensec_security->want_features & GENSEC_FEATURE_SEAL) {
+ gensec_ntlmssp_state->ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL;
+ }
+
+ nt_status = ntlmssp_set_domain(gensec_ntlmssp_state->ntlmssp_state,
+ cli_credentials_get_domain(gensec_security->credentials));
+ NT_STATUS_NOT_OK_RETURN(nt_status);
+
+ nt_status = ntlmssp_set_username(gensec_ntlmssp_state->ntlmssp_state,
+ cli_credentials_get_username(gensec_security->credentials));
+ NT_STATUS_NOT_OK_RETURN(nt_status);
+
+ password = cli_credentials_get_password(gensec_security->credentials);
+
+ nt_status = ntlmssp_set_password(gensec_ntlmssp_state->ntlmssp_state, password);
+ NT_STATUS_NOT_OK_RETURN(nt_status);
+
+ nt_status = ntlmssp_set_workstation(gensec_ntlmssp_state->ntlmssp_state,
+ cli_credentials_get_workstation(gensec_security->credentials));
+
+ gensec_security->private_data = gensec_ntlmssp_state;
+
+ return NT_STATUS_OK;
+}
+
+/*
+ wrappers for the ntlmssp_*() functions
+*/
+static NTSTATUS gensec_ntlmssp_unseal_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
+
+ return ntlmssp_unseal_packet(gensec_ntlmssp_state->ntlmssp_state, mem_ctx, data, length, whole_pdu, pdu_length, sig);
+}
+
+static NTSTATUS gensec_ntlmssp_check_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ const DATA_BLOB *sig)
+{
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
+
+ return ntlmssp_check_packet(gensec_ntlmssp_state->ntlmssp_state, mem_ctx, data, length, whole_pdu, pdu_length, sig);
+}
+
+static NTSTATUS gensec_ntlmssp_seal_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
+
+ return ntlmssp_seal_packet(gensec_ntlmssp_state->ntlmssp_state, mem_ctx, data, length, whole_pdu, pdu_length, sig);
+}
+
+static NTSTATUS gensec_ntlmssp_sign_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
+
+ return ntlmssp_sign_packet(gensec_ntlmssp_state->ntlmssp_state, mem_ctx, data, length, whole_pdu, pdu_length, sig);
+}
+
+static size_t gensec_ntlmssp_sig_size(struct gensec_security *gensec_security)
+{
+ return NTLMSSP_SIG_SIZE;
+}
+
+static NTSTATUS gensec_ntlmssp_wrap(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out)
+{
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
+ DATA_BLOB sig;
+ NTSTATUS nt_status;
+
+ if (gensec_ntlmssp_state->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
+
+ *out = data_blob_talloc(mem_ctx, NULL, in->length + NTLMSSP_SIG_SIZE);
+ memcpy(out->data + NTLMSSP_SIG_SIZE, in->data, in->length);
+
+ nt_status = ntlmssp_seal_packet(gensec_ntlmssp_state->ntlmssp_state, mem_ctx,
+ out->data + NTLMSSP_SIG_SIZE,
+ out->length - NTLMSSP_SIG_SIZE,
+ out->data + NTLMSSP_SIG_SIZE,
+ out->length - NTLMSSP_SIG_SIZE,
+ &sig);
+
+ if (NT_STATUS_IS_OK(nt_status)) {
+ memcpy(out->data, sig.data, NTLMSSP_SIG_SIZE);
+ }
+ return nt_status;
+
+ } else if ((gensec_ntlmssp_state->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
+ || (gensec_ntlmssp_state->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) {
+
+ *out = data_blob_talloc(mem_ctx, NULL, in->length + NTLMSSP_SIG_SIZE);
+ memcpy(out->data + NTLMSSP_SIG_SIZE, in->data, in->length);
+
+ nt_status = ntlmssp_sign_packet(gensec_ntlmssp_state->ntlmssp_state, mem_ctx,
+ out->data + NTLMSSP_SIG_SIZE,
+ out->length - NTLMSSP_SIG_SIZE,
+ out->data + NTLMSSP_SIG_SIZE,
+ out->length - NTLMSSP_SIG_SIZE,
+ &sig);
+
+ if (NT_STATUS_IS_OK(nt_status)) {
+ memcpy(out->data, sig.data, NTLMSSP_SIG_SIZE);
+ }
+ return nt_status;
+
+ } else {
+ *out = *in;
+ return NT_STATUS_OK;
+ }
+}
+
+
+static NTSTATUS gensec_ntlmssp_unwrap(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out)
+{
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
+ DATA_BLOB sig;
+
+ if (gensec_ntlmssp_state->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
+ if (in->length < NTLMSSP_SIG_SIZE) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ sig.data = in->data;
+ sig.length = NTLMSSP_SIG_SIZE;
+
+ *out = data_blob_talloc(mem_ctx, in->data + NTLMSSP_SIG_SIZE, in->length - NTLMSSP_SIG_SIZE);
+
+ return ntlmssp_unseal_packet(gensec_ntlmssp_state->ntlmssp_state, mem_ctx,
+ out->data, out->length,
+ out->data, out->length,
+ &sig);
+
+ } else if ((gensec_ntlmssp_state->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)
+ || (gensec_ntlmssp_state->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN)) {
+ if (in->length < NTLMSSP_SIG_SIZE) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ sig.data = in->data;
+ sig.length = NTLMSSP_SIG_SIZE;
+
+ *out = data_blob_talloc(mem_ctx, in->data + NTLMSSP_SIG_SIZE, in->length - NTLMSSP_SIG_SIZE);
+
+ return ntlmssp_check_packet(gensec_ntlmssp_state->ntlmssp_state, mem_ctx,
+ out->data, out->length,
+ out->data, out->length,
+ &sig);
+ } else {
+ *out = *in;
+ return NT_STATUS_OK;
+ }
+}
+
+static NTSTATUS gensec_ntlmssp_session_key(struct gensec_security *gensec_security,
+ DATA_BLOB *session_key)
+{
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
+
+ return ntlmssp_session_key(gensec_ntlmssp_state->ntlmssp_state, session_key);
+}
+
+/**
+ * Next state function for the wrapped NTLMSSP state machine
+ *
+ * @param gensec_security GENSEC state, initialised to NTLMSSP
+ * @param out_mem_ctx The TALLOC_CTX for *out to be allocated on
+ * @param in The request, as a DATA_BLOB
+ * @param out The reply, as an talloc()ed DATA_BLOB, on *out_mem_ctx
+ * @return Error, MORE_PROCESSING_REQUIRED if a reply is sent,
+ * or NT_STATUS_OK if the user is authenticated.
+ */
+
+static NTSTATUS gensec_ntlmssp_update(struct gensec_security *gensec_security, TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out)
+{
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
+ NTSTATUS status;
+
+ status = ntlmssp_update(gensec_ntlmssp_state->ntlmssp_state, out_mem_ctx, in, out);
+
+ if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) && !NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ gensec_ntlmssp_state->have_features = 0;
+
+ if (gensec_ntlmssp_state->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN) {
+ gensec_ntlmssp_state->have_features |= GENSEC_FEATURE_SIGN;
+ }
+
+ if (gensec_ntlmssp_state->ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
+ gensec_ntlmssp_state->have_features |= GENSEC_FEATURE_SEAL;
+ }
+
+ if (gensec_ntlmssp_state->ntlmssp_state->session_key.data) {
+ gensec_ntlmssp_state->have_features |= GENSEC_FEATURE_SESSION_KEY;
+ }
+
+ return status;
+}
+
+/**
+ * Return the credentials of a logged on user, including session keys
+ * etc.
+ *
+ * Only valid after a successful authentication
+ *
+ * May only be called once per authentication.
+ *
+ */
+
+static NTSTATUS gensec_ntlmssp_session_info(struct gensec_security *gensec_security,
+ struct auth_session_info **session_info)
+{
+ NTSTATUS nt_status;
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
+
+ nt_status = auth_generate_session_info(gensec_ntlmssp_state, gensec_ntlmssp_state->server_info, session_info);
+ NT_STATUS_NOT_OK_RETURN(nt_status);
+
+ (*session_info)->session_key = data_blob_talloc(*session_info,
+ gensec_ntlmssp_state->ntlmssp_state->session_key.data,
+ gensec_ntlmssp_state->ntlmssp_state->session_key.length);
+
+ return NT_STATUS_OK;
+}
+
+static BOOL gensec_ntlmssp_have_feature(struct gensec_security *gensec_security,
+ uint32_t feature)
+{
+ struct gensec_ntlmssp_state *gensec_ntlmssp_state = gensec_security->private_data;
+ if (gensec_ntlmssp_state->have_features & feature) {
+ return True;
+ }
+
+ return False;
+}
+
+static const struct gensec_security_ops gensec_ntlmssp_security_ops = {
+ .name = "ntlmssp",
+ .sasl_name = "NTLM",
+ .auth_type = DCERPC_AUTH_TYPE_NTLMSSP,
+ .oid = GENSEC_OID_NTLMSSP,
+ .client_start = gensec_ntlmssp_client_start,
+ .server_start = gensec_ntlmssp_server_start,
+ .update = gensec_ntlmssp_update,
+ .sig_size = gensec_ntlmssp_sig_size,
+ .sign_packet = gensec_ntlmssp_sign_packet,
+ .check_packet = gensec_ntlmssp_check_packet,
+ .seal_packet = gensec_ntlmssp_seal_packet,
+ .unseal_packet = gensec_ntlmssp_unseal_packet,
+ .wrap = gensec_ntlmssp_wrap,
+ .unwrap = gensec_ntlmssp_unwrap,
+ .session_key = gensec_ntlmssp_session_key,
+ .session_info = gensec_ntlmssp_session_info,
+ .have_feature = gensec_ntlmssp_have_feature,
+ .enabled = True
+};
+
+
+NTSTATUS gensec_ntlmssp_init(void)
+{
+ NTSTATUS ret;
+ ret = gensec_register(&gensec_ntlmssp_security_ops);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(0,("Failed to register '%s' gensec backend!\n",
+ gensec_ntlmssp_security_ops.name));
+ return ret;
+ }
+
+ return ret;
+}
diff --git a/source4/auth/gensec/ntlmssp.c b/source4/auth/gensec/ntlmssp.c
new file mode 100644
index 0000000000..37374d9d39
--- /dev/null
+++ b/source4/auth/gensec/ntlmssp.c
@@ -0,0 +1,1322 @@
+/*
+ Unix SMB/Netbios implementation.
+ Version 3.0
+ handle NLTMSSP, client server side parsing
+
+ Copyright (C) Andrew Tridgell 2001
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2001-2005
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "auth/auth.h"
+#include "lib/crypto/crypto.h"
+#include "pstring.h"
+
+static NTSTATUS ntlmssp_client_initial(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ DATA_BLOB in, DATA_BLOB *out);
+static NTSTATUS ntlmssp_server_negotiate(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out);
+static NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out);
+static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out);
+
+/**
+ * Callbacks for NTLMSSP - for both client and server operating modes
+ *
+ */
+
+static const struct ntlmssp_callbacks {
+ enum ntlmssp_role role;
+ enum ntlmssp_message_type ntlmssp_command;
+ NTSTATUS (*fn)(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ DATA_BLOB in, DATA_BLOB *out);
+} ntlmssp_callbacks[] = {
+ {NTLMSSP_CLIENT, NTLMSSP_INITIAL, ntlmssp_client_initial},
+ {NTLMSSP_SERVER, NTLMSSP_NEGOTIATE, ntlmssp_server_negotiate},
+ {NTLMSSP_CLIENT, NTLMSSP_CHALLENGE, ntlmssp_client_challenge},
+ {NTLMSSP_SERVER, NTLMSSP_AUTH, ntlmssp_server_auth},
+ {NTLMSSP_CLIENT, NTLMSSP_UNKNOWN, NULL},
+ {NTLMSSP_SERVER, NTLMSSP_UNKNOWN, NULL}
+};
+
+
+/**
+ * Print out the NTLMSSP flags for debugging
+ * @param neg_flags The flags from the packet
+ */
+
+void debug_ntlmssp_flags(uint32_t neg_flags)
+{
+ DEBUG(3,("Got NTLMSSP neg_flags=0x%08x\n", neg_flags));
+
+ if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_UNICODE\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_OEM)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_OEM\n"));
+ if (neg_flags & NTLMSSP_REQUEST_TARGET)
+ DEBUGADD(4, (" NTLMSSP_REQUEST_TARGET\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_SIGN)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_SIGN\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_SEAL)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_SEAL\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_LM_KEY\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_NETWARE)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NETWARE\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_NTLM)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NTLM\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_ALWAYS_SIGN\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NTLM2\n"));
+ if (neg_flags & NTLMSSP_CHAL_TARGET_INFO)
+ DEBUGADD(4, (" NTLMSSP_CHAL_TARGET_INFO\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_128)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_128\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_KEY_EXCH\n"));
+}
+
+/**
+ * Default challenge generation code.
+ *
+ */
+
+static const uint8_t *get_challenge(const struct ntlmssp_state *ntlmssp_state)
+{
+ uint8_t *chal = talloc_size(ntlmssp_state, 8);
+ generate_random_buffer(chal, 8);
+
+ return chal;
+}
+
+/**
+ * Default 'we can set the challenge to anything we like' implementation
+ *
+ */
+
+static BOOL may_set_challenge(const struct ntlmssp_state *ntlmssp_state)
+{
+ return True;
+}
+
+/**
+ * Default 'we can set the challenge to anything we like' implementation
+ *
+ * Does not actually do anything, as the value is always in the structure anyway.
+ *
+ */
+
+static NTSTATUS set_challenge(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *challenge)
+{
+ SMB_ASSERT(challenge->length == 8);
+ return NT_STATUS_OK;
+}
+
+/**
+ * Set a username on an NTLMSSP context - ensures it is talloc()ed
+ *
+ */
+
+NTSTATUS ntlmssp_set_username(struct ntlmssp_state *ntlmssp_state, const char *user)
+{
+ if (!user) {
+ /* it should be at least "" */
+ DEBUG(1, ("NTLMSSP failed to set username - cannot accept NULL username\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ ntlmssp_state->user = talloc_strdup(ntlmssp_state, user);
+ if (!ntlmssp_state->user) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ return NT_STATUS_OK;
+}
+
+/**
+ * Set a password on an NTLMSSP context - ensures it is talloc()ed
+ *
+ */
+NTSTATUS ntlmssp_set_password(struct ntlmssp_state *ntlmssp_state, const char *password)
+{
+ if (!password) {
+ ntlmssp_state->password = NULL;
+ } else {
+ ntlmssp_state->password = talloc_strdup(ntlmssp_state, password);
+ if (!ntlmssp_state->password) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ }
+ return NT_STATUS_OK;
+}
+
+/**
+ * Set a domain on an NTLMSSP context - ensures it is talloc()ed
+ *
+ */
+NTSTATUS ntlmssp_set_domain(struct ntlmssp_state *ntlmssp_state, const char *domain)
+{
+ ntlmssp_state->domain = talloc_strdup(ntlmssp_state, domain);
+ if (!ntlmssp_state->domain) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ return NT_STATUS_OK;
+}
+
+/**
+ * Set a workstation on an NTLMSSP context - ensures it is talloc()ed
+ *
+ */
+NTSTATUS ntlmssp_set_workstation(struct ntlmssp_state *ntlmssp_state, const char *workstation)
+{
+ ntlmssp_state->workstation = talloc_strdup(ntlmssp_state, workstation);
+ if (!ntlmssp_state->workstation) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ return NT_STATUS_OK;
+}
+
+/**
+ * Store a DATA_BLOB containing an NTLMSSP response, for use later.
+ * This copies the data blob
+ */
+
+NTSTATUS ntlmssp_store_response(struct ntlmssp_state *ntlmssp_state,
+ DATA_BLOB response)
+{
+ ntlmssp_state->stored_response = data_blob_talloc(ntlmssp_state,
+ response.data, response.length);
+ return NT_STATUS_OK;
+}
+
+/**
+ * Next state function for the NTLMSSP state machine
+ *
+ * @param ntlmssp_state NTLMSSP State
+ * @param out_mem_ctx The TALLOC_CTX for *out to be allocated on
+ * @param in The request, as a DATA_BLOB
+ * @param out The reply, as an talloc()ed DATA_BLOB, on *out_mem_ctx
+ * @return Error, MORE_PROCESSING_REQUIRED if a reply is sent,
+ * or NT_STATUS_OK if the user is authenticated.
+ */
+
+NTSTATUS ntlmssp_update(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out)
+{
+ DATA_BLOB input;
+ uint32_t ntlmssp_command;
+ int i;
+
+ *out = data_blob(NULL, 0);
+
+ if (ntlmssp_state->expected_state == NTLMSSP_DONE) {
+ return NT_STATUS_OK;
+ }
+
+ if (!out_mem_ctx) {
+ /* if the caller doesn't want to manage/own the memory,
+ we can put it on our context */
+ out_mem_ctx = ntlmssp_state;
+ }
+
+ if (!in.length && ntlmssp_state->stored_response.length) {
+ input = ntlmssp_state->stored_response;
+
+ /* we only want to read the stored response once - overwrite it */
+ ntlmssp_state->stored_response = data_blob(NULL, 0);
+ } else {
+ input = in;
+ }
+
+ if (!input.length) {
+ switch (ntlmssp_state->role) {
+ case NTLMSSP_CLIENT:
+ ntlmssp_command = NTLMSSP_INITIAL;
+ break;
+ case NTLMSSP_SERVER:
+ /* 'datagram' mode - no neg packet */
+ ntlmssp_command = NTLMSSP_NEGOTIATE;
+ break;
+ }
+ } else {
+ if (!msrpc_parse(ntlmssp_state,
+ &input, "Cd",
+ "NTLMSSP",
+ &ntlmssp_command)) {
+ DEBUG(1, ("Failed to parse NTLMSSP packet, could not extract NTLMSSP command\n"));
+ dump_data(2, input.data, input.length);
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ }
+
+ if (ntlmssp_command != ntlmssp_state->expected_state) {
+ DEBUG(1, ("got NTLMSSP command %u, expected %u\n", ntlmssp_command, ntlmssp_state->expected_state));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ for (i=0; ntlmssp_callbacks[i].fn; i++) {
+ if (ntlmssp_callbacks[i].role == ntlmssp_state->role
+ && ntlmssp_callbacks[i].ntlmssp_command == ntlmssp_command
+ && ntlmssp_callbacks[i].fn) {
+ return ntlmssp_callbacks[i].fn(ntlmssp_state, out_mem_ctx, input, out);
+ }
+ }
+
+ DEBUG(1, ("failed to find NTLMSSP callback for NTLMSSP mode %u, command %u\n",
+ ntlmssp_state->role, ntlmssp_command));
+
+ return NT_STATUS_INVALID_PARAMETER;
+}
+
+/**
+ * Return the NTLMSSP master session key
+ *
+ * @param ntlmssp_state NTLMSSP State
+ */
+
+NTSTATUS ntlmssp_session_key(struct ntlmssp_state *ntlmssp_state,
+ DATA_BLOB *session_key)
+{
+ if (!ntlmssp_state->session_key.data) {
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+ *session_key = ntlmssp_state->session_key;
+
+ return NT_STATUS_OK;
+}
+
+/**
+ * End an NTLMSSP state machine
+ *
+ * @param ntlmssp_state NTLMSSP State, free()ed by this function
+ */
+
+void ntlmssp_end(struct ntlmssp_state **ntlmssp_state)
+{
+ (*ntlmssp_state)->ref_count--;
+
+ if ((*ntlmssp_state)->ref_count == 0) {
+ talloc_free(*ntlmssp_state);
+ }
+
+ *ntlmssp_state = NULL;
+ return;
+}
+
+/**
+ * Determine correct target name flags for reply, given server role
+ * and negotiated flags
+ *
+ * @param ntlmssp_state NTLMSSP State
+ * @param neg_flags The flags from the packet
+ * @param chal_flags The flags to be set in the reply packet
+ * @return The 'target name' string.
+ */
+
+static const char *ntlmssp_target_name(struct ntlmssp_state *ntlmssp_state,
+ uint32_t neg_flags, uint32_t *chal_flags)
+{
+ if (neg_flags & NTLMSSP_REQUEST_TARGET) {
+ *chal_flags |= NTLMSSP_CHAL_TARGET_INFO;
+ *chal_flags |= NTLMSSP_REQUEST_TARGET;
+ if (ntlmssp_state->server_role == ROLE_STANDALONE) {
+ *chal_flags |= NTLMSSP_TARGET_TYPE_SERVER;
+ return ntlmssp_state->server_name;
+ } else {
+ *chal_flags |= NTLMSSP_TARGET_TYPE_DOMAIN;
+ return ntlmssp_state->get_domain();
+ };
+ } else {
+ return "";
+ }
+}
+
+static void ntlmssp_handle_neg_flags(struct ntlmssp_state *ntlmssp_state,
+ uint32_t neg_flags, BOOL allow_lm) {
+ if (neg_flags & NTLMSSP_NEGOTIATE_UNICODE) {
+ ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_UNICODE;
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_OEM;
+ ntlmssp_state->unicode = True;
+ } else {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_UNICODE;
+ ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_OEM;
+ ntlmssp_state->unicode = False;
+ }
+
+ if ((neg_flags & NTLMSSP_NEGOTIATE_LM_KEY) && allow_lm && !ntlmssp_state->use_ntlmv2) {
+ /* other end forcing us to use LM */
+ ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_LM_KEY;
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2;
+ } else {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
+ }
+
+ if (neg_flags & NTLMSSP_NEGOTIATE_ALWAYS_SIGN) {
+ ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_ALWAYS_SIGN;
+ }
+
+ if (!(neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_SIGN;
+ }
+
+ if (!(neg_flags & NTLMSSP_NEGOTIATE_SEAL)) {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_SEAL;
+ }
+
+ if (!(neg_flags & NTLMSSP_NEGOTIATE_NTLM2)) {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2;
+ }
+
+ if (!(neg_flags & NTLMSSP_NEGOTIATE_128)) {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_128;
+ if (neg_flags & NTLMSSP_NEGOTIATE_56) {
+ ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_56;
+ }
+ }
+
+ if (!(neg_flags & NTLMSSP_NEGOTIATE_56)) {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_56;
+ }
+
+ if (!(neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH)) {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_KEY_EXCH;
+ }
+
+ if ((neg_flags & NTLMSSP_REQUEST_TARGET)) {
+ ntlmssp_state->neg_flags |= NTLMSSP_REQUEST_TARGET;
+ }
+
+}
+
+/**
+ Weaken NTLMSSP keys to cope with down-level clients and servers.
+
+ We probably should have some parameters to control this, but as
+ it only occours for LM_KEY connections, and this is controlled
+ by the client lanman auth/lanman auth parameters, it isn't too bad.
+*/
+
+static void ntlmssp_weaken_keys(struct ntlmssp_state *ntlmssp_state) {
+ /* Key weakening not performed on the master key for NTLM2
+ and does not occour for NTLM1. Therefore we only need
+ to do this for the LM_KEY.
+ */
+
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY) {
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_128) {
+
+ } else if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_56) {
+ ntlmssp_state->session_key.data[7] = 0xa0;
+ } else { /* forty bits */
+ ntlmssp_state->session_key.data[5] = 0xe5;
+ ntlmssp_state->session_key.data[6] = 0x38;
+ ntlmssp_state->session_key.data[7] = 0xb0;
+ }
+ ntlmssp_state->session_key.length = 8;
+ }
+}
+
+/**
+ * Next state function for the Negotiate packet
+ *
+ * @param ntlmssp_state NTLMSSP State
+ * @param out_mem_ctx The TALLOC_CTX for *out to be allocated on
+ * @param in The request, as a DATA_BLOB
+ * @param out The reply, as an talloc()ed DATA_BLOB, on *out_mem_ctx
+ * @return Errors or MORE_PROCESSING_REQUIRED if a reply is sent.
+ */
+
+static NTSTATUS ntlmssp_server_negotiate(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out)
+{
+ DATA_BLOB struct_blob;
+ fstring dnsname, dnsdomname;
+ uint32_t neg_flags = 0;
+ uint32_t ntlmssp_command, chal_flags;
+ char *cliname=NULL, *domname=NULL;
+ const uint8_t *cryptkey;
+ const char *target_name;
+
+ /* parse the NTLMSSP packet */
+#if 0
+ file_save("ntlmssp_negotiate.dat", request.data, request.length);
+#endif
+
+ if (in.length) {
+ if (!msrpc_parse(ntlmssp_state,
+ &in, "CddAA",
+ "NTLMSSP",
+ &ntlmssp_command,
+ &neg_flags,
+ &cliname,
+ &domname)) {
+ DEBUG(1, ("ntlmssp_server_negotiate: failed to parse NTLMSSP:\n"));
+ dump_data(2, in.data, in.length);
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ debug_ntlmssp_flags(neg_flags);
+ }
+
+ ntlmssp_handle_neg_flags(ntlmssp_state, neg_flags, ntlmssp_state->allow_lm_key);
+
+ /* Ask our caller what challenge they would like in the packet */
+ cryptkey = ntlmssp_state->get_challenge(ntlmssp_state);
+
+ /* Check if we may set the challenge */
+ if (!ntlmssp_state->may_set_challenge(ntlmssp_state)) {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2;
+ }
+
+ /* The flags we send back are not just the negotiated flags,
+ * they are also 'what is in this packet'. Therfore, we
+ * operate on 'chal_flags' from here on
+ */
+
+ chal_flags = ntlmssp_state->neg_flags;
+
+ /* get the right name to fill in as 'target' */
+ target_name = ntlmssp_target_name(ntlmssp_state,
+ neg_flags, &chal_flags);
+ if (target_name == NULL)
+ return NT_STATUS_INVALID_PARAMETER;
+
+ ntlmssp_state->chal = data_blob_talloc(ntlmssp_state, cryptkey, 8);
+ ntlmssp_state->internal_chal = data_blob_talloc(ntlmssp_state, cryptkey, 8);
+
+ /* This should be a 'netbios domain -> DNS domain' mapping */
+ dnsdomname[0] = '\0';
+ get_mydomname(dnsdomname);
+ strlower_m(dnsdomname);
+
+ dnsname[0] = '\0';
+ get_myfullname(dnsname);
+
+ /* This creates the 'blob' of names that appears at the end of the packet */
+ if (chal_flags & NTLMSSP_CHAL_TARGET_INFO)
+ {
+ const char *target_name_dns = "";
+ if (chal_flags |= NTLMSSP_TARGET_TYPE_DOMAIN) {
+ target_name_dns = dnsdomname;
+ } else if (chal_flags |= NTLMSSP_TARGET_TYPE_SERVER) {
+ target_name_dns = dnsname;
+ }
+
+ msrpc_gen(out_mem_ctx,
+ &struct_blob, "aaaaa",
+ NTLMSSP_NAME_TYPE_DOMAIN, target_name,
+ NTLMSSP_NAME_TYPE_SERVER, ntlmssp_state->server_name,
+ NTLMSSP_NAME_TYPE_DOMAIN_DNS, dnsdomname,
+ NTLMSSP_NAME_TYPE_SERVER_DNS, dnsname,
+ 0, "");
+ } else {
+ struct_blob = data_blob(NULL, 0);
+ }
+
+ {
+ /* Marshel the packet in the right format, be it unicode or ASCII */
+ const char *gen_string;
+ if (ntlmssp_state->unicode) {
+ gen_string = "CdUdbddB";
+ } else {
+ gen_string = "CdAdbddB";
+ }
+
+ msrpc_gen(out_mem_ctx,
+ out, gen_string,
+ "NTLMSSP",
+ NTLMSSP_CHALLENGE,
+ target_name,
+ chal_flags,
+ cryptkey, 8,
+ 0, 0,
+ struct_blob.data, struct_blob.length);
+ }
+
+ ntlmssp_state->expected_state = NTLMSSP_AUTH;
+
+ return NT_STATUS_MORE_PROCESSING_REQUIRED;
+}
+
+/**
+ * Next state function for the Authenticate packet
+ *
+ * @param ntlmssp_state NTLMSSP State
+ * @param request The request, as a DATA_BLOB
+ * @return Errors or NT_STATUS_OK.
+ */
+
+static NTSTATUS ntlmssp_server_preauth(struct ntlmssp_state *ntlmssp_state,
+ const DATA_BLOB request)
+{
+ uint32_t ntlmssp_command, auth_flags;
+ NTSTATUS nt_status;
+
+ uint8_t session_nonce_hash[16];
+
+ const char *parse_string;
+ char *domain = NULL;
+ char *user = NULL;
+ char *workstation = NULL;
+
+#if 0
+ file_save("ntlmssp_auth.dat", request.data, request.length);
+#endif
+
+ if (ntlmssp_state->unicode) {
+ parse_string = "CdBBUUUBd";
+ } else {
+ parse_string = "CdBBAAABd";
+ }
+
+ /* zero these out */
+ data_blob_free(&ntlmssp_state->lm_resp);
+ data_blob_free(&ntlmssp_state->nt_resp);
+
+ ntlmssp_state->user = NULL;
+ ntlmssp_state->domain = NULL;
+ ntlmssp_state->workstation = NULL;
+
+ /* now the NTLMSSP encoded auth hashes */
+ if (!msrpc_parse(ntlmssp_state,
+ &request, parse_string,
+ "NTLMSSP",
+ &ntlmssp_command,
+ &ntlmssp_state->lm_resp,
+ &ntlmssp_state->nt_resp,
+ &domain,
+ &user,
+ &workstation,
+ &ntlmssp_state->encrypted_session_key,
+ &auth_flags)) {
+ DEBUG(10, ("ntlmssp_server_auth: failed to parse NTLMSSP (nonfatal):\n"));
+ dump_data(10, request.data, request.length);
+
+ /* zero this out */
+ data_blob_free(&ntlmssp_state->encrypted_session_key);
+ auth_flags = 0;
+
+ /* Try again with a shorter string (Win9X truncates this packet) */
+ if (ntlmssp_state->unicode) {
+ parse_string = "CdBBUUU";
+ } else {
+ parse_string = "CdBBAAA";
+ }
+
+ /* now the NTLMSSP encoded auth hashes */
+ if (!msrpc_parse(ntlmssp_state,
+ &request, parse_string,
+ "NTLMSSP",
+ &ntlmssp_command,
+ &ntlmssp_state->lm_resp,
+ &ntlmssp_state->nt_resp,
+ &domain,
+ &user,
+ &workstation)) {
+ DEBUG(1, ("ntlmssp_server_auth: failed to parse NTLMSSP:\n"));
+ dump_data(2, request.data, request.length);
+
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ }
+
+ if (auth_flags)
+ ntlmssp_handle_neg_flags(ntlmssp_state, auth_flags, ntlmssp_state->allow_lm_key);
+
+ if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_domain(ntlmssp_state, domain))) {
+ /* zero this out */
+ data_blob_free(&ntlmssp_state->encrypted_session_key);
+ return nt_status;
+ }
+
+ if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_username(ntlmssp_state, user))) {
+ /* zero this out */
+ data_blob_free(&ntlmssp_state->encrypted_session_key);
+ return nt_status;
+ }
+
+ if (!NT_STATUS_IS_OK(nt_status = ntlmssp_set_workstation(ntlmssp_state, workstation))) {
+ /* zero this out */
+ data_blob_free(&ntlmssp_state->encrypted_session_key);
+ return nt_status;
+ }
+
+ DEBUG(3,("Got user=[%s] domain=[%s] workstation=[%s] len1=%lu len2=%lu\n",
+ ntlmssp_state->user, ntlmssp_state->domain, ntlmssp_state->workstation, (unsigned long)ntlmssp_state->lm_resp.length, (unsigned long)ntlmssp_state->nt_resp.length));
+
+#if 0
+ file_save("nthash1.dat", &ntlmssp_state->nt_resp.data, &ntlmssp_state->nt_resp.length);
+ file_save("lmhash1.dat", &ntlmssp_state->lm_resp.data, &ntlmssp_state->lm_resp.length);
+#endif
+
+ /* NTLM2 uses a 'challenge' that is made of up both the server challenge, and a
+ client challenge
+
+ However, the NTLM2 flag may still be set for the real NTLMv2 logins, be careful.
+ */
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
+ if (ntlmssp_state->nt_resp.length == 24 && ntlmssp_state->lm_resp.length == 24) {
+ struct MD5Context md5_session_nonce_ctx;
+ SMB_ASSERT(ntlmssp_state->internal_chal.data
+ && ntlmssp_state->internal_chal.length == 8);
+
+ ntlmssp_state->doing_ntlm2 = True;
+
+ memcpy(ntlmssp_state->session_nonce, ntlmssp_state->internal_chal.data, 8);
+ memcpy(&ntlmssp_state->session_nonce[8], ntlmssp_state->lm_resp.data, 8);
+
+ MD5Init(&md5_session_nonce_ctx);
+ MD5Update(&md5_session_nonce_ctx, ntlmssp_state->session_nonce, 16);
+ MD5Final(session_nonce_hash, &md5_session_nonce_ctx);
+
+ ntlmssp_state->chal = data_blob_talloc(ntlmssp_state,
+ session_nonce_hash, 8);
+
+ /* LM response is no longer useful, zero it out */
+ data_blob_free(&ntlmssp_state->lm_resp);
+
+ /* We changed the effective challenge - set it */
+ if (!NT_STATUS_IS_OK(nt_status =
+ ntlmssp_state->set_challenge(ntlmssp_state,
+ &ntlmssp_state->chal))) {
+ /* zero this out */
+ data_blob_free(&ntlmssp_state->encrypted_session_key);
+ return nt_status;
+ }
+
+ /* LM Key is incompatible... */
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
+ }
+ }
+ return NT_STATUS_OK;
+}
+
+/**
+ * Next state function for the Authenticate packet
+ * (after authentication - figures out the session keys etc)
+ *
+ * @param ntlmssp_state NTLMSSP State
+ * @return Errors or NT_STATUS_OK.
+ */
+
+static NTSTATUS ntlmssp_server_postauth(struct ntlmssp_state *ntlmssp_state,
+ DATA_BLOB *user_session_key,
+ DATA_BLOB *lm_session_key)
+{
+ NTSTATUS nt_status;
+ DATA_BLOB session_key = data_blob(NULL, 0);
+
+ if (user_session_key)
+ dump_data_pw("USER session key:\n", user_session_key->data, user_session_key->length);
+
+ if (lm_session_key)
+ dump_data_pw("LM first-8:\n", lm_session_key->data, lm_session_key->length);
+
+ /* Handle the different session key derivation for NTLM2 */
+ if (ntlmssp_state->doing_ntlm2) {
+ if (user_session_key && user_session_key->data && user_session_key->length == 16) {
+ session_key = data_blob_talloc(ntlmssp_state, NULL, 16);
+ hmac_md5(user_session_key->data, ntlmssp_state->session_nonce,
+ sizeof(ntlmssp_state->session_nonce), session_key.data);
+ DEBUG(10,("ntlmssp_server_auth: Created NTLM2 session key.\n"));
+ dump_data_pw("NTLM2 session key:\n", session_key.data, session_key.length);
+
+ } else {
+ DEBUG(10,("ntlmssp_server_auth: Failed to create NTLM2 session key.\n"));
+ session_key = data_blob(NULL, 0);
+ }
+ } else if ((ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
+ /* Ensure we can never get here on NTLMv2 */
+ && (ntlmssp_state->nt_resp.length == 0 || ntlmssp_state->nt_resp.length == 24)) {
+
+ if (lm_session_key && lm_session_key->data && lm_session_key->length >= 8) {
+ if (ntlmssp_state->lm_resp.data && ntlmssp_state->lm_resp.length == 24) {
+ session_key = data_blob_talloc(ntlmssp_state, NULL, 16);
+ SMBsesskeygen_lm_sess_key(lm_session_key->data, ntlmssp_state->lm_resp.data,
+ session_key.data);
+ DEBUG(10,("ntlmssp_server_auth: Created NTLM session key.\n"));
+ dump_data_pw("LM session key:\n", session_key.data, session_key.length);
+ } else {
+
+ /* When there is no LM response, just use zeros */
+ static const uint8_t zeros[24];
+ session_key = data_blob_talloc(ntlmssp_state, NULL, 16);
+ SMBsesskeygen_lm_sess_key(zeros, zeros,
+ session_key.data);
+ DEBUG(10,("ntlmssp_server_auth: Created NTLM session key.\n"));
+ dump_data_pw("LM session key:\n", session_key.data, session_key.length);
+ }
+ } else {
+ /* LM Key not selected */
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
+
+ DEBUG(10,("ntlmssp_server_auth: Failed to create NTLM session key.\n"));
+ session_key = data_blob(NULL, 0);
+ }
+
+ } else if (user_session_key && user_session_key->data) {
+ session_key = *user_session_key;
+ DEBUG(10,("ntlmssp_server_auth: Using unmodified nt session key.\n"));
+ dump_data_pw("unmodified session key:\n", session_key.data, session_key.length);
+
+ /* LM Key not selected */
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
+
+ } else if (lm_session_key && lm_session_key->data) {
+ /* Very weird to have LM key, but no user session key, but anyway.. */
+ session_key = *lm_session_key;
+ DEBUG(10,("ntlmssp_server_auth: Using unmodified lm session key.\n"));
+ dump_data_pw("unmodified session key:\n", session_key.data, session_key.length);
+
+ /* LM Key not selected */
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
+
+ } else {
+ DEBUG(10,("ntlmssp_server_auth: Failed to create unmodified session key.\n"));
+ session_key = data_blob(NULL, 0);
+
+ /* LM Key not selected */
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
+ }
+
+ /* With KEY_EXCH, the client supplies the proposed session key,
+ but encrypts it with the long-term key */
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) {
+ if (!ntlmssp_state->encrypted_session_key.data
+ || ntlmssp_state->encrypted_session_key.length != 16) {
+ data_blob_free(&ntlmssp_state->encrypted_session_key);
+ DEBUG(1, ("Client-supplied KEY_EXCH session key was of invalid length (%u)!\n",
+ ntlmssp_state->encrypted_session_key.length));
+ return NT_STATUS_INVALID_PARAMETER;
+ } else if (!session_key.data || session_key.length != 16) {
+ DEBUG(5, ("server session key is invalid (len == %u), cannot do KEY_EXCH!\n",
+ session_key.length));
+ ntlmssp_state->session_key = session_key;
+ } else {
+ dump_data_pw("KEY_EXCH session key (enc):\n",
+ ntlmssp_state->encrypted_session_key.data,
+ ntlmssp_state->encrypted_session_key.length);
+ arcfour_crypt(ntlmssp_state->encrypted_session_key.data,
+ session_key.data,
+ ntlmssp_state->encrypted_session_key.length);
+ ntlmssp_state->session_key = data_blob_talloc(ntlmssp_state,
+ ntlmssp_state->encrypted_session_key.data,
+ ntlmssp_state->encrypted_session_key.length);
+ dump_data_pw("KEY_EXCH session key:\n", ntlmssp_state->encrypted_session_key.data,
+ ntlmssp_state->encrypted_session_key.length);
+ }
+ } else {
+ ntlmssp_state->session_key = session_key;
+ }
+
+ /* The server might need us to use a partial-strength session key */
+ ntlmssp_weaken_keys(ntlmssp_state);
+
+ nt_status = ntlmssp_sign_init(ntlmssp_state);
+
+ data_blob_free(&ntlmssp_state->encrypted_session_key);
+
+ /* allow arbitarily many authentications, but watch that this will cause a
+ memory leak, until the ntlmssp_state is shutdown
+ */
+
+ if (ntlmssp_state->server_multiple_authentications) {
+ ntlmssp_state->expected_state = NTLMSSP_AUTH;
+ } else {
+ ntlmssp_state->expected_state = NTLMSSP_DONE;
+ }
+
+ return nt_status;
+}
+
+
+/**
+ * Next state function for the Authenticate packet
+ *
+ * @param ntlmssp_state NTLMSSP State
+ * @param in The packet in from the NTLMSSP partner, as a DATA_BLOB
+ * @param out The reply, as an allocated DATA_BLOB, caller to free.
+ * @return Errors, NT_STATUS_MORE_PROCESSING_REQUIRED or NT_STATUS_OK.
+ */
+
+static NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out)
+{
+ DATA_BLOB user_session_key = data_blob(NULL, 0);
+ DATA_BLOB lm_session_key = data_blob(NULL, 0);
+ NTSTATUS nt_status;
+
+ /* zero the outbound NTLMSSP packet */
+ *out = data_blob_talloc(out_mem_ctx, NULL, 0);
+
+ if (!NT_STATUS_IS_OK(nt_status = ntlmssp_server_preauth(ntlmssp_state, in))) {
+ return nt_status;
+ }
+
+ /*
+ * Note we don't check here for NTLMv2 auth settings. If NTLMv2 auth
+ * is required (by "ntlm auth = no" and "lm auth = no" being set in the
+ * smb.conf file) and no NTLMv2 response was sent then the password check
+ * will fail here. JRA.
+ */
+
+ /* Finally, actually ask if the password is OK */
+
+ if (!NT_STATUS_IS_OK(nt_status = ntlmssp_state->check_password(ntlmssp_state,
+ &user_session_key, &lm_session_key))) {
+ return nt_status;
+ }
+
+ if (ntlmssp_state->server_use_session_keys) {
+ return ntlmssp_server_postauth(ntlmssp_state, &user_session_key, &lm_session_key);
+ } else {
+ ntlmssp_state->session_key = data_blob(NULL, 0);
+ return NT_STATUS_OK;
+ }
+}
+
+/**
+ * Create an NTLMSSP state machine
+ *
+ * @param ntlmssp_state NTLMSSP State, allocated by this function
+ */
+
+NTSTATUS ntlmssp_server_start(TALLOC_CTX *mem_ctx, struct ntlmssp_state **ntlmssp_state)
+{
+ *ntlmssp_state = talloc(mem_ctx, struct ntlmssp_state);
+ if (!*ntlmssp_state) {
+ DEBUG(0,("ntlmssp_server_start: talloc failed!\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+ ZERO_STRUCTP(*ntlmssp_state);
+
+ (*ntlmssp_state)->role = NTLMSSP_SERVER;
+
+ (*ntlmssp_state)->get_challenge = get_challenge;
+ (*ntlmssp_state)->set_challenge = set_challenge;
+ (*ntlmssp_state)->may_set_challenge = may_set_challenge;
+
+ (*ntlmssp_state)->workstation = NULL;
+ (*ntlmssp_state)->server_name = lp_netbios_name();
+
+ (*ntlmssp_state)->get_domain = lp_workgroup;
+ (*ntlmssp_state)->server_role = ROLE_DOMAIN_MEMBER; /* a good default */
+
+ (*ntlmssp_state)->expected_state = NTLMSSP_NEGOTIATE;
+
+ (*ntlmssp_state)->allow_lm_key = (lp_lanman_auth()
+ && lp_parm_bool(-1, "ntlmssp_server", "allow_lm_key", False));
+
+ (*ntlmssp_state)->server_use_session_keys = True;
+ (*ntlmssp_state)->server_multiple_authentications = False;
+
+ (*ntlmssp_state)->ref_count = 1;
+
+ (*ntlmssp_state)->neg_flags =
+ NTLMSSP_NEGOTIATE_NTLM;
+
+ if (lp_parm_bool(-1, "ntlmssp_server", "128bit", True)) {
+ (*ntlmssp_state)->neg_flags |= NTLMSSP_NEGOTIATE_128;
+ }
+
+ if (lp_parm_bool(-1, "ntlmssp_server", "keyexchange", True)) {
+ (*ntlmssp_state)->neg_flags |= NTLMSSP_NEGOTIATE_KEY_EXCH;
+ }
+
+ if (lp_parm_bool(-1, "ntlmssp_server", "ntlm2", True)) {
+ (*ntlmssp_state)->neg_flags |= NTLMSSP_NEGOTIATE_NTLM2;
+ }
+
+ return NT_STATUS_OK;
+}
+
+/*********************************************************************
+ Client side NTLMSSP
+*********************************************************************/
+
+/**
+ * Next state function for the Initial packet
+ *
+ * @param ntlmssp_state NTLMSSP State
+ * @param out_mem_ctx The DATA_BLOB *out will be allocated on this context
+ * @param in The request, as a DATA_BLOB. reply.data must be NULL
+ * @param out The reply, as an talloc()ed DATA_BLOB, on out_mem_ctx
+ * @return Errors or NT_STATUS_OK.
+ */
+
+static NTSTATUS ntlmssp_client_initial(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ DATA_BLOB in, DATA_BLOB *out)
+{
+ if (ntlmssp_state->unicode) {
+ ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_UNICODE;
+ } else {
+ ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_OEM;
+ }
+
+ if (ntlmssp_state->use_ntlmv2) {
+ ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_NTLM2;
+ }
+
+ /* generate the ntlmssp negotiate packet */
+ msrpc_gen(out_mem_ctx,
+ out, "CddAA",
+ "NTLMSSP",
+ NTLMSSP_NEGOTIATE,
+ ntlmssp_state->neg_flags,
+ ntlmssp_state->get_domain(),
+ ntlmssp_state->workstation);
+
+ ntlmssp_state->expected_state = NTLMSSP_CHALLENGE;
+
+ return NT_STATUS_MORE_PROCESSING_REQUIRED;
+}
+
+/**
+ * Next state function for the Challenge Packet. Generate an auth packet.
+ *
+ * @param ntlmssp_state NTLMSSP State
+ * @param request The request, as a DATA_BLOB. reply.data must be NULL
+ * @param request The reply, as an allocated DATA_BLOB, caller to free.
+ * @return Errors or NT_STATUS_OK.
+ */
+
+static NTSTATUS ntlmssp_client_challenge(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out)
+{
+ uint32_t chal_flags, ntlmssp_command, unkn1, unkn2;
+ DATA_BLOB server_domain_blob;
+ DATA_BLOB challenge_blob;
+ DATA_BLOB struct_blob = data_blob(NULL, 0);
+ char *server_domain;
+ const char *chal_parse_string;
+ const char *auth_gen_string;
+ uint8_t lm_hash[16];
+ DATA_BLOB lm_response = data_blob(NULL, 0);
+ DATA_BLOB nt_response = data_blob(NULL, 0);
+ DATA_BLOB session_key = data_blob(NULL, 0);
+ DATA_BLOB lm_session_key = data_blob(NULL, 0);
+ DATA_BLOB encrypted_session_key = data_blob(NULL, 0);
+ NTSTATUS nt_status;
+
+ if (!msrpc_parse(ntlmssp_state,
+ &in, "CdBd",
+ "NTLMSSP",
+ &ntlmssp_command,
+ &server_domain_blob,
+ &chal_flags)) {
+ DEBUG(1, ("Failed to parse the NTLMSSP Challenge: (#1)\n"));
+ dump_data(2, in.data, in.length);
+
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ data_blob_free(&server_domain_blob);
+
+ DEBUG(3, ("Got challenge flags:\n"));
+ debug_ntlmssp_flags(chal_flags);
+
+ ntlmssp_handle_neg_flags(ntlmssp_state, chal_flags, ntlmssp_state->allow_lm_key);
+
+ if (ntlmssp_state->unicode) {
+ if (chal_flags & NTLMSSP_CHAL_TARGET_INFO) {
+ chal_parse_string = "CdUdbddB";
+ } else {
+ chal_parse_string = "CdUdbdd";
+ }
+ auth_gen_string = "CdBBUUUBd";
+ } else {
+ if (chal_flags & NTLMSSP_CHAL_TARGET_INFO) {
+ chal_parse_string = "CdAdbddB";
+ } else {
+ chal_parse_string = "CdAdbdd";
+ }
+
+ auth_gen_string = "CdBBAAABd";
+ }
+
+ DEBUG(3, ("NTLMSSP: Set final flags:\n"));
+ debug_ntlmssp_flags(ntlmssp_state->neg_flags);
+
+ if (!msrpc_parse(ntlmssp_state,
+ &in, chal_parse_string,
+ "NTLMSSP",
+ &ntlmssp_command,
+ &server_domain,
+ &chal_flags,
+ &challenge_blob, 8,
+ &unkn1, &unkn2,
+ &struct_blob)) {
+ DEBUG(1, ("Failed to parse the NTLMSSP Challenge: (#2)\n"));
+ dump_data(2, in.data, in.length);
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ ntlmssp_state->server_domain = server_domain;
+
+ if (challenge_blob.length != 8) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (!ntlmssp_state->password) {
+ static const uint8_t zeros[16];
+ /* do nothing - blobs are zero length */
+
+ /* session key is all zeros */
+ session_key = data_blob_talloc(ntlmssp_state, zeros, 16);
+ lm_session_key = data_blob_talloc(ntlmssp_state, zeros, 16);
+
+ /* not doing NLTM2 without a password */
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_NTLM2;
+ } else if (ntlmssp_state->use_ntlmv2) {
+
+ if (!struct_blob.length) {
+ /* be lazy, match win2k - we can't do NTLMv2 without it */
+ DEBUG(1, ("Server did not provide 'target information', required for NTLMv2\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* TODO: if the remote server is standalone, then we should replace 'domain'
+ with the server name as supplied above */
+
+ if (!SMBNTLMv2encrypt(ntlmssp_state->user,
+ ntlmssp_state->domain,
+ ntlmssp_state->password, &challenge_blob,
+ &struct_blob,
+ &lm_response, &nt_response,
+ NULL, &session_key)) {
+ data_blob_free(&challenge_blob);
+ data_blob_free(&struct_blob);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* LM Key is incompatible... */
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
+
+ } else if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
+ struct MD5Context md5_session_nonce_ctx;
+ uint8_t nt_hash[16];
+ uint8_t session_nonce[16];
+ uint8_t session_nonce_hash[16];
+ uint8_t user_session_key[16];
+ E_md4hash(ntlmssp_state->password, nt_hash);
+
+ lm_response = data_blob_talloc(ntlmssp_state, NULL, 24);
+ generate_random_buffer(lm_response.data, 8);
+ memset(lm_response.data+8, 0, 16);
+
+ memcpy(session_nonce, challenge_blob.data, 8);
+ memcpy(&session_nonce[8], lm_response.data, 8);
+
+ MD5Init(&md5_session_nonce_ctx);
+ MD5Update(&md5_session_nonce_ctx, challenge_blob.data, 8);
+ MD5Update(&md5_session_nonce_ctx, lm_response.data, 8);
+ MD5Final(session_nonce_hash, &md5_session_nonce_ctx);
+
+ DEBUG(5, ("NTLMSSP challenge set by NTLM2\n"));
+ DEBUG(5, ("challenge is: \n"));
+ dump_data(5, session_nonce_hash, 8);
+
+ nt_response = data_blob_talloc(ntlmssp_state, NULL, 24);
+ SMBNTencrypt(ntlmssp_state->password,
+ session_nonce_hash,
+ nt_response.data);
+
+ session_key = data_blob_talloc(ntlmssp_state, NULL, 16);
+
+ SMBsesskeygen_ntv1(nt_hash, user_session_key);
+ hmac_md5(user_session_key, session_nonce, sizeof(session_nonce), session_key.data);
+ dump_data_pw("NTLM2 session key:\n", session_key.data, session_key.length);
+
+ /* LM Key is incompatible... */
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
+ } else {
+ uint8_t nt_hash[16];
+
+ if (ntlmssp_state->use_nt_response) {
+ nt_response = data_blob_talloc(ntlmssp_state, NULL, 24);
+ SMBNTencrypt(ntlmssp_state->password,challenge_blob.data,
+ nt_response.data);
+ E_md4hash(ntlmssp_state->password, nt_hash);
+ session_key = data_blob_talloc(ntlmssp_state, NULL, 16);
+ SMBsesskeygen_ntv1(nt_hash, session_key.data);
+ dump_data_pw("NT session key:\n", session_key.data, session_key.length);
+ }
+
+ /* lanman auth is insecure, it may be disabled */
+ if (lp_client_lanman_auth()) {
+ lm_response = data_blob_talloc(ntlmssp_state, NULL, 24);
+ if (!SMBencrypt(ntlmssp_state->password,challenge_blob.data,
+ lm_response.data)) {
+ /* If the LM password was too long (and therefore the LM hash being
+ of the first 14 chars only), don't send it */
+ data_blob_free(&lm_response);
+
+ /* LM Key is incompatible with 'long' passwords */
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
+ } else {
+ E_deshash(ntlmssp_state->password, lm_hash);
+ lm_session_key = data_blob_talloc(ntlmssp_state, NULL, 16);
+ memcpy(lm_session_key.data, lm_hash, 8);
+ memset(&lm_session_key.data[8], '\0', 8);
+
+ if (!ntlmssp_state->use_nt_response) {
+ session_key = lm_session_key;
+ }
+ }
+ } else {
+ /* LM Key is incompatible... */
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_LM_KEY;
+ }
+ }
+
+ if ((ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_LM_KEY)
+ && lp_client_lanman_auth() && lm_session_key.length == 16) {
+ DATA_BLOB new_session_key = data_blob_talloc(ntlmssp_state, NULL, 16);
+ if (lm_response.length == 24) {
+ SMBsesskeygen_lm_sess_key(lm_session_key.data, lm_response.data,
+ new_session_key.data);
+ } else {
+ static const uint8_t zeros[24];
+ SMBsesskeygen_lm_sess_key(lm_session_key.data, zeros,
+ new_session_key.data);
+ }
+ new_session_key.length = 16;
+ session_key = new_session_key;
+ dump_data_pw("LM session key\n", session_key.data, session_key.length);
+ }
+
+
+ /* Key exchange encryptes a new client-generated session key with
+ the password-derived key */
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) {
+ /* Make up a new session key */
+ uint8_t client_session_key[16];
+ generate_random_buffer(client_session_key, sizeof(client_session_key));
+
+ /* Encrypt the new session key with the old one */
+ encrypted_session_key = data_blob_talloc(ntlmssp_state,
+ client_session_key, sizeof(client_session_key));
+ dump_data_pw("KEY_EXCH session key:\n", encrypted_session_key.data, encrypted_session_key.length);
+ arcfour_crypt(encrypted_session_key.data, session_key.data, encrypted_session_key.length);
+ dump_data_pw("KEY_EXCH session key (enc):\n", encrypted_session_key.data, encrypted_session_key.length);
+
+ /* Mark the new session key as the 'real' session key */
+ session_key = data_blob_talloc(ntlmssp_state, client_session_key, sizeof(client_session_key));
+ }
+
+ /* this generates the actual auth packet */
+ if (!msrpc_gen(out_mem_ctx,
+ out, auth_gen_string,
+ "NTLMSSP",
+ NTLMSSP_AUTH,
+ lm_response.data, lm_response.length,
+ nt_response.data, nt_response.length,
+ ntlmssp_state->domain,
+ ntlmssp_state->user,
+ ntlmssp_state->workstation,
+ encrypted_session_key.data, encrypted_session_key.length,
+ ntlmssp_state->neg_flags)) {
+
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ ntlmssp_state->session_key = session_key;
+
+ /* The client might be using 56 or 40 bit weakened keys */
+ ntlmssp_weaken_keys(ntlmssp_state);
+
+ ntlmssp_state->chal = challenge_blob;
+ ntlmssp_state->lm_resp = lm_response;
+ ntlmssp_state->nt_resp = nt_response;
+
+ ntlmssp_state->expected_state = NTLMSSP_DONE;
+
+ nt_status = ntlmssp_sign_init(ntlmssp_state);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(1, ("Could not setup NTLMSSP signing/sealing system (error was: %s)\n",
+ nt_errstr(nt_status)));
+ return nt_status;
+ }
+
+ return nt_status;
+}
+
+NTSTATUS ntlmssp_client_start(TALLOC_CTX *mem_ctx, struct ntlmssp_state **ntlmssp_state)
+{
+ *ntlmssp_state = talloc(mem_ctx, struct ntlmssp_state);
+ if (!*ntlmssp_state) {
+ DEBUG(0,("ntlmssp_client_start: talloc failed!\n"));
+ return NT_STATUS_NO_MEMORY;
+ }
+ ZERO_STRUCTP(*ntlmssp_state);
+
+ (*ntlmssp_state)->role = NTLMSSP_CLIENT;
+
+ (*ntlmssp_state)->workstation = lp_netbios_name();
+ (*ntlmssp_state)->get_domain = lp_workgroup;
+
+ (*ntlmssp_state)->unicode = lp_parm_bool(-1, "ntlmssp_client", "unicode", True);
+
+ (*ntlmssp_state)->use_nt_response = lp_parm_bool(-1, "ntlmssp_client", "send_nt_reponse", True);
+
+ (*ntlmssp_state)->allow_lm_key = (lp_lanman_auth()
+ && lp_parm_bool(-1, "ntlmssp_client", "allow_lm_key", False));
+
+ (*ntlmssp_state)->use_ntlmv2 = lp_client_ntlmv2_auth();
+
+ (*ntlmssp_state)->expected_state = NTLMSSP_INITIAL;
+
+ (*ntlmssp_state)->ref_count = 1;
+
+ (*ntlmssp_state)->neg_flags =
+ NTLMSSP_NEGOTIATE_NTLM |
+ NTLMSSP_REQUEST_TARGET;
+
+ if (lp_parm_bool(-1, "ntlmssp_client", "128bit", True)) {
+ (*ntlmssp_state)->neg_flags |= NTLMSSP_NEGOTIATE_128;
+ }
+
+ if (lp_parm_bool(-1, "ntlmssp_client", "keyexchange", True)) {
+ (*ntlmssp_state)->neg_flags |= NTLMSSP_NEGOTIATE_KEY_EXCH;
+ }
+
+ if (lp_parm_bool(-1, "ntlmssp_client", "ntlm2", True)) {
+ (*ntlmssp_state)->neg_flags |= NTLMSSP_NEGOTIATE_NTLM2;
+ } else {
+ /* apparently we can't do ntlmv2 if we don't do ntlm2 */
+ (*ntlmssp_state)->use_ntlmv2 = False;
+ }
+
+ return NT_STATUS_OK;
+}
+
diff --git a/source4/auth/gensec/ntlmssp.h b/source4/auth/gensec/ntlmssp.h
new file mode 100644
index 0000000000..e17c133c8b
--- /dev/null
+++ b/source4/auth/gensec/ntlmssp.h
@@ -0,0 +1,190 @@
+/*
+ Unix SMB/CIFS implementation.
+ SMB parameters and setup
+ Copyright (C) Andrew Tridgell 1992-1997
+ Copyright (C) Luke Kenneth Casson Leighton 1996-1997
+ Copyright (C) Paul Ashton 1997
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "librpc/gen_ndr/ndr_samr.h"
+
+/* NTLMSSP mode */
+enum ntlmssp_role
+{
+ NTLMSSP_SERVER,
+ NTLMSSP_CLIENT
+};
+
+/* NTLMSSP message types */
+enum ntlmssp_message_type
+{
+ NTLMSSP_INITIAL = 0 /* samba internal state */,
+ NTLMSSP_NEGOTIATE = 1,
+ NTLMSSP_CHALLENGE = 2,
+ NTLMSSP_AUTH = 3,
+ NTLMSSP_UNKNOWN = 4,
+ NTLMSSP_DONE = 5 /* samba final state */
+};
+
+/* NTLMSSP negotiation flags */
+#define NTLMSSP_NEGOTIATE_UNICODE 0x00000001
+#define NTLMSSP_NEGOTIATE_OEM 0x00000002
+#define NTLMSSP_REQUEST_TARGET 0x00000004
+#define NTLMSSP_NEGOTIATE_SIGN 0x00000010 /* Message integrity */
+#define NTLMSSP_NEGOTIATE_SEAL 0x00000020 /* Message confidentiality */
+#define NTLMSSP_NEGOTIATE_DATAGRAM_STYLE 0x00000040
+#define NTLMSSP_NEGOTIATE_LM_KEY 0x00000080
+#define NTLMSSP_NEGOTIATE_NETWARE 0x00000100
+#define NTLMSSP_NEGOTIATE_NTLM 0x00000200
+#define NTLMSSP_NEGOTIATE_DOMAIN_SUPPLIED 0x00001000
+#define NTLMSSP_NEGOTIATE_WORKSTATION_SUPPLIED 0x00002000
+#define NTLMSSP_NEGOTIATE_THIS_IS_LOCAL_CALL 0x00004000
+#define NTLMSSP_NEGOTIATE_ALWAYS_SIGN 0x00008000
+#define NTLMSSP_TARGET_TYPE_DOMAIN 0x10000
+#define NTLMSSP_TARGET_TYPE_SERVER 0x20000
+#define NTLMSSP_CHAL_INIT_RESPONSE 0x00010000
+
+#define NTLMSSP_CHAL_ACCEPT_RESPONSE 0x00020000
+#define NTLMSSP_CHAL_NON_NT_SESSION_KEY 0x00040000
+#define NTLMSSP_NEGOTIATE_NTLM2 0x00080000
+#define NTLMSSP_CHAL_TARGET_INFO 0x00800000
+#define NTLMSSP_NEGOTIATE_128 0x20000000 /* 128-bit encryption */
+#define NTLMSSP_NEGOTIATE_KEY_EXCH 0x40000000
+#define NTLMSSP_NEGOTIATE_56 0x80000000
+
+#define NTLMSSP_NAME_TYPE_SERVER 0x01
+#define NTLMSSP_NAME_TYPE_DOMAIN 0x02
+#define NTLMSSP_NAME_TYPE_SERVER_DNS 0x03
+#define NTLMSSP_NAME_TYPE_DOMAIN_DNS 0x04
+
+#define NTLMSSP_SIGN_VERSION 1
+
+#define NTLMSSP_SIG_SIZE 16
+
+struct ntlmssp_state
+{
+ uint_t ref_count;
+ enum ntlmssp_role role;
+ enum samr_Role server_role;
+ uint32_t expected_state;
+
+ BOOL unicode;
+ BOOL use_ntlmv2;
+ BOOL use_nt_response; /* Set to 'False' to debug what happens when the NT response is omited */
+ BOOL allow_lm_key; /* The LM_KEY code is not functional at this point, and it's not
+ very secure anyway */
+
+ BOOL server_use_session_keys; /* Set to 'False' for authentication only,
+ that will never return a session key */
+ BOOL server_multiple_authentications; /* Set to 'True' to allow squid 2.5
+ style 'challenge caching' */
+
+ char *user;
+ char *domain;
+ const char *workstation;
+ char *password;
+ char *server_domain;
+
+ DATA_BLOB internal_chal; /* Random challenge as supplied to the client for NTLM authentication */
+
+ DATA_BLOB chal; /* Random challenge as input into the actual NTLM (or NTLM2) authentication */
+ DATA_BLOB lm_resp;
+ DATA_BLOB nt_resp;
+ DATA_BLOB session_key;
+
+ uint32_t neg_flags; /* the current state of negotiation with the NTLMSSP partner */
+
+ /* internal variables used by NTLM2 */
+ BOOL doing_ntlm2;
+ uint8_t session_nonce[16];
+
+ /* internal variables used by KEY_EXCH (client-supplied user session key */
+ DATA_BLOB encrypted_session_key;
+
+ void *auth_context;
+
+ /**
+ * Callback to get the 'challenge' used for NTLM authentication.
+ *
+ * @param ntlmssp_state This structure
+ * @return 8 bytes of challenge data, determined by the server to be the challenge for NTLM authentication
+ *
+ */
+ const uint8_t *(*get_challenge)(const struct ntlmssp_state *ntlmssp_state);
+
+ /**
+ * Callback to find if the challenge used by NTLM authentication may be modified
+ *
+ * The NTLM2 authentication scheme modifies the effective challenge, but this is not compatiable with the
+ * current 'security=server' implementation..
+ *
+ * @param ntlmssp_state This structure
+ * @return Can the challenge be set to arbitary values?
+ *
+ */
+ BOOL (*may_set_challenge)(const struct ntlmssp_state *ntlmssp_state);
+
+ /**
+ * Callback to set the 'challenge' used for NTLM authentication.
+ *
+ * The callback may use the void *auth_context to store state information, but the same value is always available
+ * from the DATA_BLOB chal on this structure.
+ *
+ * @param ntlmssp_state This structure
+ * @param challange 8 bytes of data, agreed by the client and server to be the effective challenge for NTLM2 authentication
+ *
+ */
+ NTSTATUS (*set_challenge)(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *challenge);
+
+ /**
+ * Callback to check the user's password.
+ *
+ * The callback must reads the feilds of this structure for the information it needs on the user
+ * @param ntlmssp_state This structure
+ * @param nt_session_key If an NT session key is returned by the authentication process, return it here
+ * @param lm_session_key If an LM session key is returned by the authentication process, return it here
+ *
+ */
+ NTSTATUS (*check_password)(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *nt_session_key, DATA_BLOB *lm_session_key);
+
+ const char *server_name;
+ const char *(*get_domain)(void);
+
+ /* SMB Signing */
+ uint32_t ntlm_seq_num;
+ uint32_t ntlm2_send_seq_num;
+ uint32_t ntlm2_recv_seq_num;
+
+ /* ntlmv2 */
+ DATA_BLOB send_sign_key;
+ DATA_BLOB send_seal_key;
+ DATA_BLOB recv_sign_key;
+ DATA_BLOB recv_seal_key;
+
+ uint8_t send_seal_hash[258];
+ uint8_t recv_seal_hash[258];
+
+ /* ntlmv1 */
+ uint8_t ntlmssp_hash[258];
+
+ /* it turns out that we don't always get the
+ response in at the time we want to process it.
+ Store it here, until we need it */
+ DATA_BLOB stored_response;
+
+};
+
diff --git a/source4/auth/gensec/ntlmssp_parse.c b/source4/auth/gensec/ntlmssp_parse.c
new file mode 100644
index 0000000000..42546cb130
--- /dev/null
+++ b/source4/auth/gensec/ntlmssp_parse.c
@@ -0,0 +1,338 @@
+/*
+ Unix SMB/CIFS implementation.
+ simple kerberos5/SPNEGO routines
+ Copyright (C) Andrew Tridgell 2001
+ Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2002
+ Copyright (C) Andrew Bartlett 2002-2003
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "pstring.h"
+
+/*
+ this is a tiny msrpc packet generator. I am only using this to
+ avoid tying this code to a particular varient of our rpc code. This
+ generator is not general enough for all our rpc needs, its just
+ enough for the spnego/ntlmssp code
+
+ format specifiers are:
+
+ U = unicode string (input is unix string)
+ a = address (input is char *unix_string)
+ (1 byte type, 1 byte length, unicode/ASCII string, all inline)
+ A = ASCII string (input is unix string)
+ B = data blob (pointer + length)
+ b = data blob in header (pointer + length)
+ D
+ d = word (4 bytes)
+ C = constant ascii string
+ */
+BOOL msrpc_gen(TALLOC_CTX *mem_ctx, DATA_BLOB *blob,
+ const char *format, ...)
+{
+ int i;
+ ssize_t n;
+ va_list ap;
+ char *s;
+ uint8_t *b;
+ int head_size=0, data_size=0;
+ int head_ofs, data_ofs;
+ int *intargs;
+
+ DATA_BLOB *pointers;
+
+ pointers = talloc_array(mem_ctx, DATA_BLOB, strlen(format));
+ intargs = talloc_array(pointers, int, strlen(format));
+
+ /* first scan the format to work out the header and body size */
+ va_start(ap, format);
+ for (i=0; format[i]; i++) {
+ switch (format[i]) {
+ case 'U':
+ s = va_arg(ap, char *);
+ head_size += 8;
+ n = push_ucs2_talloc(pointers, (void **)&pointers[i].data, s);
+ if (n == -1) {
+ return False;
+ }
+ pointers[i].length = n;
+ pointers[i].length -= 2;
+ data_size += pointers[i].length;
+ break;
+ case 'A':
+ s = va_arg(ap, char *);
+ head_size += 8;
+ n = push_ascii_talloc(pointers, (char **)&pointers[i].data, s);
+ if (n == -1) {
+ return False;
+ }
+ pointers[i].length = n;
+ pointers[i].length -= 1;
+ data_size += pointers[i].length;
+ break;
+ case 'a':
+ n = va_arg(ap, int);
+ intargs[i] = n;
+ s = va_arg(ap, char *);
+ n = push_ucs2_talloc(pointers, (void **)&pointers[i].data, s);
+ if (n == -1) {
+ return False;
+ }
+ pointers[i].length = n;
+ pointers[i].length -= 2;
+ data_size += pointers[i].length + 4;
+ break;
+ case 'B':
+ b = va_arg(ap, uint8_t *);
+ head_size += 8;
+ pointers[i].data = b;
+ pointers[i].length = va_arg(ap, int);
+ data_size += pointers[i].length;
+ break;
+ case 'b':
+ b = va_arg(ap, uint8_t *);
+ pointers[i].data = b;
+ pointers[i].length = va_arg(ap, int);
+ head_size += pointers[i].length;
+ break;
+ case 'd':
+ n = va_arg(ap, int);
+ intargs[i] = n;
+ head_size += 4;
+ break;
+ case 'C':
+ s = va_arg(ap, char *);
+ pointers[i].data = (uint8_t *)s;
+ pointers[i].length = strlen(s)+1;
+ head_size += pointers[i].length;
+ break;
+ }
+ }
+ va_end(ap);
+
+ /* allocate the space, then scan the format again to fill in the values */
+ *blob = data_blob_talloc(mem_ctx, NULL, head_size + data_size);
+
+ head_ofs = 0;
+ data_ofs = head_size;
+
+ va_start(ap, format);
+ for (i=0; format[i]; i++) {
+ switch (format[i]) {
+ case 'U':
+ case 'A':
+ case 'B':
+ n = pointers[i].length;
+ SSVAL(blob->data, head_ofs, n); head_ofs += 2;
+ SSVAL(blob->data, head_ofs, n); head_ofs += 2;
+ SIVAL(blob->data, head_ofs, data_ofs); head_ofs += 4;
+ if (pointers[i].data && n) /* don't follow null pointers... */
+ memcpy(blob->data+data_ofs, pointers[i].data, n);
+ data_ofs += n;
+ break;
+ case 'a':
+ n = intargs[i];
+ SSVAL(blob->data, data_ofs, n); data_ofs += 2;
+
+ n = pointers[i].length;
+ SSVAL(blob->data, data_ofs, n); data_ofs += 2;
+ if (n >= 0) {
+ memcpy(blob->data+data_ofs, pointers[i].data, n);
+ }
+ data_ofs += n;
+ break;
+ case 'd':
+ n = intargs[i];
+ SIVAL(blob->data, head_ofs, n);
+ head_ofs += 4;
+ break;
+ case 'b':
+ n = pointers[i].length;
+ memcpy(blob->data + head_ofs, pointers[i].data, n);
+ head_ofs += n;
+ break;
+ case 'C':
+ n = pointers[i].length;
+ memcpy(blob->data + head_ofs, pointers[i].data, n);
+ head_ofs += n;
+ break;
+ }
+ }
+ va_end(ap);
+
+ talloc_free(pointers);
+
+ return True;
+}
+
+
+/* a helpful macro to avoid running over the end of our blob */
+#define NEED_DATA(amount) \
+if ((head_ofs + amount) > blob->length) { \
+ return False; \
+}
+
+/*
+ this is a tiny msrpc packet parser. This the the partner of msrpc_gen
+
+ format specifiers are:
+
+ U = unicode string (output is unix string)
+ A = ascii string
+ B = data blob
+ b = data blob in header
+ d = word (4 bytes)
+ C = constant ascii string
+ */
+
+BOOL msrpc_parse(TALLOC_CTX *mem_ctx, const DATA_BLOB *blob,
+ const char *format, ...)
+{
+ int i;
+ va_list ap;
+ const char **ps, *s;
+ DATA_BLOB *b;
+ size_t head_ofs = 0;
+ uint16_t len1, len2;
+ uint32_t ptr;
+ uint32_t *v;
+ pstring p;
+
+ va_start(ap, format);
+ for (i=0; format[i]; i++) {
+ switch (format[i]) {
+ case 'U':
+ NEED_DATA(8);
+ len1 = SVAL(blob->data, head_ofs); head_ofs += 2;
+ len2 = SVAL(blob->data, head_ofs); head_ofs += 2;
+ ptr = IVAL(blob->data, head_ofs); head_ofs += 4;
+
+ ps = (const char **)va_arg(ap, char **);
+ if (len1 == 0 && len2 == 0) {
+ *ps = "";
+ } else {
+ /* make sure its in the right format - be strict */
+ if ((len1 != len2) || (ptr + len1 < ptr) || (ptr + len1 < len1) || (ptr + len1 > blob->length)) {
+ return False;
+ }
+ if (len1 & 1) {
+ /* if odd length and unicode */
+ return False;
+ }
+ if (blob->data + ptr < (uint8_t *)ptr || blob->data + ptr < blob->data)
+ return False;
+
+ if (0 < len1) {
+ pull_string(p, blob->data + ptr, sizeof(p),
+ len1,
+ STR_UNICODE|STR_NOALIGN);
+ (*ps) = talloc_strdup(mem_ctx, p);
+ if (!(*ps)) {
+ return False;
+ }
+ } else {
+ (*ps) = "";
+ }
+ }
+ break;
+ case 'A':
+ NEED_DATA(8);
+ len1 = SVAL(blob->data, head_ofs); head_ofs += 2;
+ len2 = SVAL(blob->data, head_ofs); head_ofs += 2;
+ ptr = IVAL(blob->data, head_ofs); head_ofs += 4;
+
+ ps = (const char **)va_arg(ap, char **);
+ /* make sure its in the right format - be strict */
+ if (len1 == 0 && len2 == 0) {
+ *ps = "";
+ } else {
+ if ((len1 != len2) || (ptr + len1 < ptr) || (ptr + len1 < len1) || (ptr + len1 > blob->length)) {
+ return False;
+ }
+
+ if (blob->data + ptr < (uint8_t *)ptr || blob->data + ptr < blob->data)
+ return False;
+
+ if (0 < len1) {
+ pull_string(p, blob->data + ptr, sizeof(p),
+ len1,
+ STR_ASCII|STR_NOALIGN);
+ (*ps) = talloc_strdup(mem_ctx, p);
+ if (!(*ps)) {
+ return False;
+ }
+ } else {
+ (*ps) = "";
+ }
+ }
+ break;
+ case 'B':
+ NEED_DATA(8);
+ len1 = SVAL(blob->data, head_ofs); head_ofs += 2;
+ len2 = SVAL(blob->data, head_ofs); head_ofs += 2;
+ ptr = IVAL(blob->data, head_ofs); head_ofs += 4;
+
+ b = (DATA_BLOB *)va_arg(ap, void *);
+ if (len1 == 0 && len2 == 0) {
+ *b = data_blob_talloc(mem_ctx, NULL, 0);
+ } else {
+ /* make sure its in the right format - be strict */
+ if ((len1 != len2) || (ptr + len1 < ptr) || (ptr + len1 < len1) || (ptr + len1 > blob->length)) {
+ return False;
+ }
+
+ if (blob->data + ptr < (uint8_t *)ptr || blob->data + ptr < blob->data)
+ return False;
+
+ *b = data_blob_talloc(mem_ctx, blob->data + ptr, len1);
+ }
+ break;
+ case 'b':
+ b = (DATA_BLOB *)va_arg(ap, void *);
+ len1 = va_arg(ap, uint_t);
+ /* make sure its in the right format - be strict */
+ NEED_DATA(len1);
+ if (blob->data + head_ofs < (uint8_t *)head_ofs || blob->data + head_ofs < blob->data)
+ return False;
+
+ *b = data_blob_talloc(mem_ctx, blob->data + head_ofs, len1);
+ head_ofs += len1;
+ break;
+ case 'd':
+ v = va_arg(ap, uint32_t *);
+ NEED_DATA(4);
+ *v = IVAL(blob->data, head_ofs); head_ofs += 4;
+ break;
+ case 'C':
+ s = va_arg(ap, char *);
+
+ if (blob->data + head_ofs < (uint8_t *)head_ofs || blob->data + head_ofs < blob->data)
+ return False;
+
+ head_ofs += pull_string(p, blob->data+head_ofs, sizeof(p),
+ blob->length - head_ofs,
+ STR_ASCII|STR_TERMINATE);
+ if (strcmp(s, p) != 0) {
+ return False;
+ }
+ break;
+ }
+ }
+ va_end(ap);
+
+ return True;
+}
diff --git a/source4/auth/gensec/ntlmssp_sign.c b/source4/auth/gensec/ntlmssp_sign.c
new file mode 100644
index 0000000000..347a85da77
--- /dev/null
+++ b/source4/auth/gensec/ntlmssp_sign.c
@@ -0,0 +1,449 @@
+/*
+ * Unix SMB/CIFS implementation.
+ * Version 3.0
+ * NTLMSSP Signing routines
+ * Copyright (C) Luke Kenneth Casson Leighton 1996-2001
+ * Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003-2004
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include "includes.h"
+#include "auth/auth.h"
+#include "lib/crypto/crypto.h"
+
+#define CLI_SIGN "session key to client-to-server signing key magic constant"
+#define CLI_SEAL "session key to client-to-server sealing key magic constant"
+#define SRV_SIGN "session key to server-to-client signing key magic constant"
+#define SRV_SEAL "session key to server-to-client sealing key magic constant"
+
+/**
+ * Some notes on then NTLM2 code:
+ *
+ * This code works correctly for the sealing part of the problem. If
+ * we disable the check for valid client signatures, then we see that
+ * the output of a rpcecho 'sinkdata' at smbd is correct. We get the
+ * valid data, and it is validly decrypted.
+ *
+ * This means that the quantity of data passing though the RC4 sealing
+ * pad is correct.
+ *
+ * This code also correctly matches test values that I have obtained,
+ * claiming to be the correct output of NTLM2 signature generation.
+ *
+ */
+
+static void calc_ntlmv2_key(TALLOC_CTX *mem_ctx,
+ DATA_BLOB *subkey,
+ DATA_BLOB session_key,
+ const char *constant)
+{
+ struct MD5Context ctx3;
+ *subkey = data_blob_talloc(mem_ctx, NULL, 16);
+ MD5Init(&ctx3);
+ MD5Update(&ctx3, session_key.data, session_key.length);
+ MD5Update(&ctx3, constant, strlen(constant)+1);
+ MD5Final(subkey->data, &ctx3);
+}
+
+enum ntlmssp_direction {
+ NTLMSSP_SEND,
+ NTLMSSP_RECEIVE
+};
+
+static NTSTATUS ntlmssp_make_packet_signature(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *sig_mem_ctx,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ enum ntlmssp_direction direction,
+ DATA_BLOB *sig, BOOL encrypt_sig)
+{
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
+
+ HMACMD5Context ctx;
+ uint8_t digest[16];
+ uint8_t seq_num[4];
+
+ *sig = data_blob_talloc(sig_mem_ctx, NULL, NTLMSSP_SIG_SIZE);
+ if (!sig->data) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ switch (direction) {
+ case NTLMSSP_SEND:
+ SIVAL(seq_num, 0, ntlmssp_state->ntlm2_send_seq_num);
+ ntlmssp_state->ntlm2_send_seq_num++;
+ hmac_md5_init_limK_to_64(ntlmssp_state->send_sign_key.data,
+ ntlmssp_state->send_sign_key.length, &ctx);
+ break;
+ case NTLMSSP_RECEIVE:
+ SIVAL(seq_num, 0, ntlmssp_state->ntlm2_recv_seq_num);
+ ntlmssp_state->ntlm2_recv_seq_num++;
+ hmac_md5_init_limK_to_64(ntlmssp_state->recv_sign_key.data,
+ ntlmssp_state->recv_sign_key.length, &ctx);
+ break;
+ }
+ hmac_md5_update(seq_num, sizeof(seq_num), &ctx);
+ hmac_md5_update(whole_pdu, pdu_length, &ctx);
+ hmac_md5_final(digest, &ctx);
+
+ if (encrypt_sig && ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) {
+ switch (direction) {
+ case NTLMSSP_SEND:
+ arcfour_crypt_sbox(ntlmssp_state->send_seal_hash, digest, 8);
+ break;
+ case NTLMSSP_RECEIVE:
+ arcfour_crypt_sbox(ntlmssp_state->recv_seal_hash, digest, 8);
+ break;
+ }
+ }
+
+ SIVAL(sig->data, 0, NTLMSSP_SIGN_VERSION);
+ memcpy(sig->data + 4, digest, 8);
+ memcpy(sig->data + 12, seq_num, 4);
+
+ } else {
+ uint32_t crc;
+ crc = crc32_calc_buffer(data, length);
+ if (!msrpc_gen(sig_mem_ctx, sig, "dddd", NTLMSSP_SIGN_VERSION, 0, crc, ntlmssp_state->ntlm_seq_num)) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ ntlmssp_state->ntlm_seq_num++;
+
+ arcfour_crypt_sbox(ntlmssp_state->ntlmssp_hash, sig->data+4, sig->length-4);
+ }
+ dump_data_pw("calculated ntlmssp signature\n", sig->data, sig->length);
+ return NT_STATUS_OK;
+}
+
+NTSTATUS ntlmssp_sign_packet(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *sig_mem_ctx,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ if (!ntlmssp_state->session_key.length) {
+ DEBUG(3, ("NO session key, cannot check sign packet\n"));
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+
+ if (!ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN) {
+ DEBUG(3, ("NTLMSSP Signing not negotiated - cannot sign packet!\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ return ntlmssp_make_packet_signature(ntlmssp_state, sig_mem_ctx,
+ data, length,
+ whole_pdu, pdu_length,
+ NTLMSSP_SEND, sig, True);
+}
+
+/**
+ * Check the signature of an incoming packet
+ *
+ */
+
+NTSTATUS ntlmssp_check_packet(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *sig_mem_ctx,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ const DATA_BLOB *sig)
+{
+ DATA_BLOB local_sig;
+ NTSTATUS nt_status;
+
+ if (!ntlmssp_state->session_key.length) {
+ DEBUG(3, ("NO session key, cannot check packet signature\n"));
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+
+ if (sig->length < 8) {
+ DEBUG(0, ("NTLMSSP packet check failed due to short signature (%lu bytes)!\n",
+ (unsigned long)sig->length));
+ }
+
+ nt_status = ntlmssp_make_packet_signature(ntlmssp_state, sig_mem_ctx,
+ data, length,
+ whole_pdu, pdu_length,
+ NTLMSSP_RECEIVE, &local_sig, True);
+
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(0, ("NTLMSSP packet check failed with %s\n", nt_errstr(nt_status)));
+ return nt_status;
+ }
+
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
+ if (local_sig.length != sig->length ||
+ memcmp(local_sig.data,
+ sig->data, sig->length) != 0) {
+ DEBUG(5, ("BAD SIG NTLM2: wanted signature of\n"));
+ dump_data(5, local_sig.data, local_sig.length);
+
+ DEBUG(5, ("BAD SIG: got signature of\n"));
+ dump_data(5, sig->data, sig->length);
+
+ DEBUG(0, ("NTLMSSP NTLM2 packet check failed due to invalid signature!\n"));
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ } else {
+ if (local_sig.length != sig->length ||
+ memcmp(local_sig.data + 8,
+ sig->data + 8, sig->length - 8) != 0) {
+ DEBUG(5, ("BAD SIG NTLM1: wanted signature of\n"));
+ dump_data(5, local_sig.data, local_sig.length);
+
+ DEBUG(5, ("BAD SIG: got signature of\n"));
+ dump_data(5, sig->data, sig->length);
+
+ DEBUG(0, ("NTLMSSP NTLM1 packet check failed due to invalid signature!\n"));
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ }
+ dump_data_pw("checked ntlmssp signature\n", sig->data, sig->length);
+
+ return NT_STATUS_OK;
+}
+
+
+/**
+ * Seal data with the NTLMSSP algorithm
+ *
+ */
+
+NTSTATUS ntlmssp_seal_packet(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *sig_mem_ctx,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ NTSTATUS nt_status;
+ if (!ntlmssp_state->session_key.length) {
+ DEBUG(3, ("NO session key, cannot seal packet\n"));
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+
+ if (!ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
+ DEBUG(3, ("NTLMSSP Sealing not negotiated - cannot seal packet!\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ DEBUG(10,("ntlmssp_seal_data: seal\n"));
+ dump_data_pw("ntlmssp clear data\n", data, length);
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
+ /* The order of these two operations matters - we must first seal the packet,
+ then seal the sequence number - this is becouse the send_seal_hash is not
+ constant, but is is rather updated with each iteration */
+ nt_status = ntlmssp_make_packet_signature(ntlmssp_state, sig_mem_ctx,
+ data, length,
+ whole_pdu, pdu_length,
+ NTLMSSP_SEND, sig, False);
+ arcfour_crypt_sbox(ntlmssp_state->send_seal_hash, data, length);
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) {
+ arcfour_crypt_sbox(ntlmssp_state->send_seal_hash, sig->data+4, 8);
+ }
+ } else {
+ uint32_t crc;
+ crc = crc32_calc_buffer(data, length);
+ if (!msrpc_gen(sig_mem_ctx, sig, "dddd", NTLMSSP_SIGN_VERSION, 0, crc, ntlmssp_state->ntlm_seq_num)) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* The order of these two operations matters - we must
+ first seal the packet, then seal the sequence
+ number - this is becouse the ntlmssp_hash is not
+ constant, but is is rather updated with each
+ iteration */
+
+ arcfour_crypt_sbox(ntlmssp_state->ntlmssp_hash, data, length);
+ arcfour_crypt_sbox(ntlmssp_state->ntlmssp_hash, sig->data+4, sig->length-4);
+ /* increment counter on send */
+ ntlmssp_state->ntlm_seq_num++;
+ nt_status = NT_STATUS_OK;
+ }
+ dump_data_pw("ntlmssp signature\n", sig->data, sig->length);
+ dump_data_pw("ntlmssp sealed data\n", data, length);
+
+
+ return nt_status;
+}
+
+/**
+ * Unseal data with the NTLMSSP algorithm
+ *
+ */
+
+NTSTATUS ntlmssp_unseal_packet(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *sig_mem_ctx,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ DATA_BLOB local_sig;
+ NTSTATUS nt_status;
+ if (!ntlmssp_state->session_key.length) {
+ DEBUG(3, ("NO session key, cannot unseal packet\n"));
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+
+ dump_data_pw("ntlmssp sealed data\n", data, length);
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
+ arcfour_crypt_sbox(ntlmssp_state->recv_seal_hash, data, length);
+
+ nt_status = ntlmssp_make_packet_signature(ntlmssp_state, sig_mem_ctx,
+ data, length,
+ whole_pdu, pdu_length,
+ NTLMSSP_RECEIVE, &local_sig, True);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ return nt_status;
+ }
+
+ if (local_sig.length != sig->length ||
+ memcmp(local_sig.data,
+ sig->data, sig->length) != 0) {
+ DEBUG(5, ("BAD SIG NTLM2: wanted signature of\n"));
+ dump_data(5, local_sig.data, local_sig.length);
+
+ DEBUG(5, ("BAD SIG: got signature of\n"));
+ dump_data(5, sig->data, sig->length);
+
+ DEBUG(0, ("NTLMSSP NTLM2 packet check failed due to invalid signature!\n"));
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ dump_data_pw("ntlmssp clear data\n", data, length);
+ return NT_STATUS_OK;
+ } else {
+ arcfour_crypt_sbox(ntlmssp_state->ntlmssp_hash, data, length);
+ dump_data_pw("ntlmssp clear data\n", data, length);
+ return ntlmssp_check_packet(ntlmssp_state, sig_mem_ctx, data, length, whole_pdu, pdu_length, sig);
+ }
+}
+
+/**
+ Initialise the state for NTLMSSP signing.
+*/
+NTSTATUS ntlmssp_sign_init(struct ntlmssp_state *ntlmssp_state)
+{
+ uint8_t p24[24];
+ ZERO_STRUCT(p24);
+
+ DEBUG(3, ("NTLMSSP Sign/Seal - Initialising with flags:\n"));
+ debug_ntlmssp_flags(ntlmssp_state->neg_flags);
+
+ if (!ntlmssp_state->session_key.length) {
+ DEBUG(3, ("NO session key, cannot intialise signing\n"));
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
+ {
+ DATA_BLOB weak_session_key = ntlmssp_state->session_key;
+ const char *send_sign_const;
+ const char *send_seal_const;
+ const char *recv_sign_const;
+ const char *recv_seal_const;
+
+ switch (ntlmssp_state->role) {
+ case NTLMSSP_CLIENT:
+ send_sign_const = CLI_SIGN;
+ send_seal_const = CLI_SEAL;
+ recv_sign_const = SRV_SIGN;
+ recv_seal_const = SRV_SEAL;
+ break;
+ case NTLMSSP_SERVER:
+ send_sign_const = SRV_SIGN;
+ send_seal_const = SRV_SEAL;
+ recv_sign_const = CLI_SIGN;
+ recv_seal_const = CLI_SEAL;
+ break;
+ default:
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+
+ /**
+ Weaken NTLMSSP keys to cope with down-level clients, servers and export restrictions.
+
+ We probably should have some parameters to control this, once we get NTLM2 working.
+ */
+
+
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_128) {
+
+ } else if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_56) {
+ weak_session_key.length = 6;
+ } else { /* forty bits */
+ weak_session_key.length = 5;
+ }
+ dump_data_pw("NTLMSSP weakend master key:\n",
+ weak_session_key.data,
+ weak_session_key.length);
+
+ /* SEND */
+ calc_ntlmv2_key(ntlmssp_state,
+ &ntlmssp_state->send_sign_key,
+ ntlmssp_state->session_key, send_sign_const);
+ dump_data_pw("NTLMSSP send sign key:\n",
+ ntlmssp_state->send_sign_key.data,
+ ntlmssp_state->send_sign_key.length);
+
+ calc_ntlmv2_key(ntlmssp_state,
+ &ntlmssp_state->send_seal_key,
+ weak_session_key, send_seal_const);
+ dump_data_pw("NTLMSSP send seal key:\n",
+ ntlmssp_state->send_seal_key.data,
+ ntlmssp_state->send_seal_key.length);
+
+ arcfour_init(ntlmssp_state->send_seal_hash,
+ &ntlmssp_state->send_seal_key);
+
+ dump_data_pw("NTLMSSP send sesl hash:\n",
+ ntlmssp_state->send_seal_hash,
+ sizeof(ntlmssp_state->send_seal_hash));
+
+ /* RECV */
+ calc_ntlmv2_key(ntlmssp_state,
+ &ntlmssp_state->recv_sign_key,
+ ntlmssp_state->session_key, recv_sign_const);
+ dump_data_pw("NTLMSSP recv sign key:\n",
+ ntlmssp_state->recv_sign_key.data,
+ ntlmssp_state->recv_sign_key.length);
+
+ calc_ntlmv2_key(ntlmssp_state,
+ &ntlmssp_state->recv_seal_key,
+ weak_session_key, recv_seal_const);
+ dump_data_pw("NTLMSSP recv seal key:\n",
+ ntlmssp_state->recv_seal_key.data,
+ ntlmssp_state->recv_seal_key.length);
+ arcfour_init(ntlmssp_state->recv_seal_hash,
+ &ntlmssp_state->recv_seal_key);
+
+ dump_data_pw("NTLMSSP receive seal hash:\n",
+ ntlmssp_state->recv_seal_hash,
+ sizeof(ntlmssp_state->recv_seal_hash));
+ } else {
+ DEBUG(5, ("NTLMSSP Sign/Seal - using NTLM1\n"));
+
+ arcfour_init(ntlmssp_state->ntlmssp_hash,
+ &ntlmssp_state->session_key);
+ dump_data_pw("NTLMSSP hash:\n", ntlmssp_state->ntlmssp_hash,
+ sizeof(ntlmssp_state->ntlmssp_hash));
+ }
+
+ ntlmssp_state->ntlm_seq_num = 0;
+ ntlmssp_state->ntlm2_send_seq_num = 0;
+ ntlmssp_state->ntlm2_recv_seq_num = 0;
+
+ return NT_STATUS_OK;
+}
diff --git a/source4/auth/gensec/schannel.c b/source4/auth/gensec/schannel.c
new file mode 100644
index 0000000000..0657de27d9
--- /dev/null
+++ b/source4/auth/gensec/schannel.c
@@ -0,0 +1,268 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ dcerpc schannel operations
+
+ Copyright (C) Andrew Tridgell 2004
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "librpc/gen_ndr/ndr_schannel.h"
+#include "auth/auth.h"
+#include "auth/gensec/schannel.h"
+
+static size_t schannel_sig_size(struct gensec_security *gensec_security)
+{
+ return 32;
+}
+
+static NTSTATUS schannel_session_key(struct gensec_security *gensec_security,
+ DATA_BLOB *session_key)
+{
+ return NT_STATUS_NOT_IMPLEMENTED;
+}
+
+static NTSTATUS schannel_update(struct gensec_security *gensec_security, TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out)
+{
+ struct schannel_state *state = gensec_security->private_data;
+ NTSTATUS status;
+ struct schannel_bind bind_schannel;
+ struct schannel_bind_ack bind_schannel_ack;
+ struct creds_CredentialState *creds;
+
+ const char *workstation;
+ const char *domain;
+ *out = data_blob(NULL, 0);
+
+ switch (gensec_security->gensec_role) {
+ case GENSEC_CLIENT:
+ if (state->state != SCHANNEL_STATE_START) {
+ /* we could parse the bind ack, but we don't know what it is yet */
+ return NT_STATUS_OK;
+ }
+
+ state->creds = talloc_reference(state, cli_credentials_get_netlogon_creds(gensec_security->credentials));
+
+ bind_schannel.unknown1 = 0;
+#if 0
+ /* to support this we'd need to have access to the full domain name */
+ bind_schannel.bind_type = 23;
+ bind_schannel.u.info23.domain = cli_credentials_get_domain(gensec_security->credentials);
+ bind_schannel.u.info23.account_name = cli_credentials_get_username(gensec_security->credentials);
+ bind_schannel.u.info23.dnsdomain = str_format_nbt_domain(out_mem_ctx, fulldomainname);
+ bind_schannel.u.info23.workstation = str_format_nbt_domain(out_mem_ctx, cli_credentials_get_workstation(gensec_security->credentials));
+#else
+ bind_schannel.bind_type = 3;
+ bind_schannel.u.info3.domain = cli_credentials_get_domain(gensec_security->credentials);
+ bind_schannel.u.info3.workstation = cli_credentials_get_workstation(gensec_security->credentials);
+#endif
+
+ status = ndr_push_struct_blob(out, out_mem_ctx, &bind_schannel,
+ (ndr_push_flags_fn_t)ndr_push_schannel_bind);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(3, ("Could not create schannel bind: %s\n",
+ nt_errstr(status)));
+ return status;
+ }
+
+ state->state = SCHANNEL_STATE_UPDATE_1;
+
+ return NT_STATUS_MORE_PROCESSING_REQUIRED;
+ case GENSEC_SERVER:
+
+ if (state->state != SCHANNEL_STATE_START) {
+ /* no third leg on this protocol */
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* parse the schannel startup blob */
+ status = ndr_pull_struct_blob(&in, out_mem_ctx, &bind_schannel,
+ (ndr_pull_flags_fn_t)ndr_pull_schannel_bind);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ if (bind_schannel.bind_type == 23) {
+ workstation = bind_schannel.u.info23.workstation;
+ domain = bind_schannel.u.info23.domain;
+ } else {
+ workstation = bind_schannel.u.info3.workstation;
+ domain = bind_schannel.u.info3.domain;
+ }
+
+ /* pull the session key for this client */
+ status = schannel_fetch_session_key(out_mem_ctx, workstation,
+ domain, &creds);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(3, ("Could not find session key for attempted schannel connection from %s: %s\n",
+ workstation, nt_errstr(status)));
+ return status;
+ }
+
+ state->creds = talloc_reference(state, creds);
+
+ bind_schannel_ack.unknown1 = 1;
+ bind_schannel_ack.unknown2 = 0;
+ bind_schannel_ack.unknown3 = 0x6c0000;
+
+ status = ndr_push_struct_blob(out, out_mem_ctx, &bind_schannel_ack,
+ (ndr_push_flags_fn_t)ndr_push_schannel_bind_ack);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(3, ("Could not return schannel bind ack for client %s: %s\n",
+ workstation, nt_errstr(status)));
+ return status;
+ }
+
+ state->state = SCHANNEL_STATE_UPDATE_1;
+
+ return NT_STATUS_OK;
+ }
+ return NT_STATUS_INVALID_PARAMETER;
+}
+
+/**
+ * Return the struct creds_CredentialState.
+ *
+ * Make sure not to call this unless gensec is using schannel...
+ */
+
+NTSTATUS dcerpc_schannel_creds(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ struct creds_CredentialState **creds)
+{
+ struct schannel_state *state = gensec_security->private_data;
+
+ *creds = talloc_reference(mem_ctx, state->creds);
+ if (!*creds) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ return NT_STATUS_OK;
+}
+
+
+/**
+ * Return the credentials of a logged on user, including session keys
+ * etc.
+ *
+ * Only valid after a successful authentication
+ *
+ * May only be called once per authentication.
+ *
+ */
+
+static NTSTATUS schannel_session_info(struct gensec_security *gensec_security,
+ struct auth_session_info **session_info)
+{
+ (*session_info) = talloc(gensec_security, struct auth_session_info);
+ NT_STATUS_HAVE_NO_MEMORY(*session_info);
+
+ ZERO_STRUCTP(*session_info);
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS schannel_start(struct gensec_security *gensec_security)
+{
+ struct schannel_state *state;
+
+ state = talloc(gensec_security, struct schannel_state);
+ if (!state) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ state->state = SCHANNEL_STATE_START;
+ state->seq_num = 0;
+ gensec_security->private_data = state;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS schannel_server_start(struct gensec_security *gensec_security)
+{
+ NTSTATUS status;
+ struct schannel_state *state;
+
+ status = schannel_start(gensec_security);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ state = gensec_security->private_data;
+ state->initiator = False;
+
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS schannel_client_start(struct gensec_security *gensec_security)
+{
+ NTSTATUS status;
+ struct schannel_state *state;
+
+ status = schannel_start(gensec_security);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ state = gensec_security->private_data;
+ state->initiator = True;
+
+ return NT_STATUS_OK;
+}
+
+
+static BOOL schannel_have_feature(struct gensec_security *gensec_security,
+ uint32_t feature)
+{
+ if (feature & (GENSEC_FEATURE_SIGN |
+ GENSEC_FEATURE_SEAL)) {
+ return True;
+ }
+ return False;
+}
+
+
+static const struct gensec_security_ops gensec_schannel_security_ops = {
+ .name = "schannel",
+ .auth_type = DCERPC_AUTH_TYPE_SCHANNEL,
+ .client_start = schannel_client_start,
+ .server_start = schannel_server_start,
+ .update = schannel_update,
+ .seal_packet = schannel_seal_packet,
+ .sign_packet = schannel_sign_packet,
+ .check_packet = schannel_check_packet,
+ .unseal_packet = schannel_unseal_packet,
+ .session_key = schannel_session_key,
+ .session_info = schannel_session_info,
+ .sig_size = schannel_sig_size,
+ .have_feature = schannel_have_feature,
+ .enabled = True
+};
+
+NTSTATUS gensec_schannel_init(void)
+{
+ NTSTATUS ret;
+ ret = gensec_register(&gensec_schannel_security_ops);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(0,("Failed to register '%s' gensec backend!\n",
+ gensec_schannel_security_ops.name));
+ return ret;
+ }
+
+ return ret;
+}
diff --git a/source4/auth/gensec/schannel.h b/source4/auth/gensec/schannel.h
new file mode 100644
index 0000000000..c109387c7c
--- /dev/null
+++ b/source4/auth/gensec/schannel.h
@@ -0,0 +1,35 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ dcerpc schannel operations
+
+ Copyright (C) Andrew Tridgell 2004
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+enum schannel_position {
+ SCHANNEL_STATE_START = 0,
+ SCHANNEL_STATE_UPDATE_1
+};
+
+struct schannel_state {
+ enum schannel_position state;
+ uint32_t seq_num;
+ BOOL initiator;
+ struct creds_CredentialState *creds;
+};
+
diff --git a/source4/auth/gensec/schannel_sign.c b/source4/auth/gensec/schannel_sign.c
new file mode 100644
index 0000000000..493b26f6c0
--- /dev/null
+++ b/source4/auth/gensec/schannel_sign.c
@@ -0,0 +1,283 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ schannel library code
+
+ Copyright (C) Andrew Tridgell 2004
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "lib/crypto/crypto.h"
+#include "auth/auth.h"
+#include "auth/gensec/schannel.h"
+
+#define NETSEC_SIGN_SIGNATURE { 0x77, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00 }
+#define NETSEC_SEAL_SIGNATURE { 0x77, 0x00, 0x7a, 0x00, 0xff, 0xff, 0x00, 0x00 }
+
+/*******************************************************************
+ Encode or Decode the sequence number (which is symmetric)
+ ********************************************************************/
+static void netsec_deal_with_seq_num(struct schannel_state *state,
+ const uint8_t packet_digest[8],
+ uint8_t seq_num[8])
+{
+ static const uint8_t zeros[4];
+ uint8_t sequence_key[16];
+ uint8_t digest1[16];
+
+ hmac_md5(state->creds->session_key, zeros, sizeof(zeros), digest1);
+ hmac_md5(digest1, packet_digest, 8, sequence_key);
+ arcfour_crypt(seq_num, sequence_key, 8);
+
+ state->seq_num++;
+}
+
+
+/*******************************************************************
+ Calculate the key with which to encode the data payload
+ ********************************************************************/
+static void netsec_get_sealing_key(const uint8_t session_key[16],
+ const uint8_t seq_num[8],
+ uint8_t sealing_key[16])
+{
+ static const uint8_t zeros[4];
+ uint8_t digest2[16];
+ uint8_t sess_kf0[16];
+ int i;
+
+ for (i = 0; i < 16; i++) {
+ sess_kf0[i] = session_key[i] ^ 0xf0;
+ }
+
+ hmac_md5(sess_kf0, zeros, 4, digest2);
+ hmac_md5(digest2, seq_num, 8, sealing_key);
+}
+
+
+/*******************************************************************
+ Create a digest over the entire packet (including the data), and
+ MD5 it with the session key.
+ ********************************************************************/
+static void schannel_digest(const uint8_t sess_key[16],
+ const uint8_t netsec_sig[8],
+ const uint8_t *confounder,
+ const uint8_t *data, size_t data_len,
+ uint8_t digest_final[16])
+{
+ uint8_t packet_digest[16];
+ static const uint8_t zeros[4];
+ struct MD5Context ctx;
+
+ MD5Init(&ctx);
+ MD5Update(&ctx, zeros, 4);
+ MD5Update(&ctx, netsec_sig, 8);
+ if (confounder) {
+ MD5Update(&ctx, confounder, 8);
+ }
+ MD5Update(&ctx, data, data_len);
+ MD5Final(packet_digest, &ctx);
+
+ hmac_md5(sess_key, packet_digest, sizeof(packet_digest), digest_final);
+}
+
+
+/*
+ unseal a packet
+*/
+NTSTATUS schannel_unseal_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ struct schannel_state *state = gensec_security->private_data;
+
+ uint8_t digest_final[16];
+ uint8_t confounder[8];
+ uint8_t seq_num[8];
+ uint8_t sealing_key[16];
+ static const uint8_t netsec_sig[8] = NETSEC_SEAL_SIGNATURE;
+
+ if (sig->length != 32) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ memcpy(confounder, sig->data+24, 8);
+
+ RSIVAL(seq_num, 0, state->seq_num);
+ SIVAL(seq_num, 4, state->initiator?0:0x80);
+
+ netsec_get_sealing_key(state->creds->session_key, seq_num, sealing_key);
+ arcfour_crypt(confounder, sealing_key, 8);
+ arcfour_crypt(data, sealing_key, length);
+
+ schannel_digest(state->creds->session_key,
+ netsec_sig, confounder,
+ data, length, digest_final);
+
+ if (memcmp(digest_final, sig->data+16, 8) != 0) {
+ dump_data_pw("calc digest:", digest_final, 8);
+ dump_data_pw("wire digest:", sig->data+16, 8);
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ netsec_deal_with_seq_num(state, digest_final, seq_num);
+
+ if (memcmp(seq_num, sig->data+8, 8) != 0) {
+ dump_data_pw("calc seq num:", seq_num, 8);
+ dump_data_pw("wire seq num:", sig->data+8, 8);
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ return NT_STATUS_OK;
+}
+
+/*
+ check the signature on a packet
+*/
+NTSTATUS schannel_check_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ const DATA_BLOB *sig)
+{
+ struct schannel_state *state = gensec_security->private_data;
+
+ uint8_t digest_final[16];
+ uint8_t seq_num[8];
+ static const uint8_t netsec_sig[8] = NETSEC_SIGN_SIGNATURE;
+
+ /* w2k sends just 24 bytes and skip the confounder */
+ if (sig->length != 32 && sig->length != 24) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ RSIVAL(seq_num, 0, state->seq_num);
+ SIVAL(seq_num, 4, state->initiator?0:0x80);
+
+ dump_data_pw("seq_num:\n", seq_num, 8);
+ dump_data_pw("sess_key:\n", state->creds->session_key, 16);
+
+ schannel_digest(state->creds->session_key,
+ netsec_sig, NULL,
+ data, length, digest_final);
+
+ netsec_deal_with_seq_num(state, digest_final, seq_num);
+
+ if (memcmp(seq_num, sig->data+8, 8) != 0) {
+ dump_data_pw("calc seq num:", seq_num, 8);
+ dump_data_pw("wire seq num:", sig->data+8, 8);
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ if (memcmp(digest_final, sig->data+16, 8) != 0) {
+ dump_data_pw("calc digest:", digest_final, 8);
+ dump_data_pw("wire digest:", sig->data+16, 8);
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ return NT_STATUS_OK;
+}
+
+
+/*
+ seal a packet
+*/
+NTSTATUS schannel_seal_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ struct schannel_state *state = gensec_security->private_data;
+
+ uint8_t digest_final[16];
+ uint8_t confounder[8];
+ uint8_t seq_num[8];
+ uint8_t sealing_key[16];
+ static const uint8_t netsec_sig[8] = NETSEC_SEAL_SIGNATURE;
+
+ generate_random_buffer(confounder, 8);
+
+ RSIVAL(seq_num, 0, state->seq_num);
+ SIVAL(seq_num, 4, state->initiator?0x80:0);
+
+ schannel_digest(state->creds->session_key,
+ netsec_sig, confounder,
+ data, length, digest_final);
+
+ netsec_get_sealing_key(state->creds->session_key, seq_num, sealing_key);
+ arcfour_crypt(confounder, sealing_key, 8);
+ arcfour_crypt(data, sealing_key, length);
+
+ netsec_deal_with_seq_num(state, digest_final, seq_num);
+
+ (*sig) = data_blob_talloc(mem_ctx, NULL, 32);
+
+ memcpy(sig->data, netsec_sig, 8);
+ memcpy(sig->data+8, seq_num, 8);
+ memcpy(sig->data+16, digest_final, 8);
+ memcpy(sig->data+24, confounder, 8);
+
+ dump_data_pw("signature:", sig->data+ 0, 8);
+ dump_data_pw("seq_num :", sig->data+ 8, 8);
+ dump_data_pw("digest :", sig->data+16, 8);
+ dump_data_pw("confound :", sig->data+24, 8);
+
+ return NT_STATUS_OK;
+}
+
+
+/*
+ sign a packet
+*/
+NTSTATUS schannel_sign_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ struct schannel_state *state = gensec_security->private_data;
+
+ uint8_t digest_final[16];
+ uint8_t seq_num[8];
+ static const uint8_t netsec_sig[8] = NETSEC_SIGN_SIGNATURE;
+
+ RSIVAL(seq_num, 0, state->seq_num);
+ SIVAL(seq_num, 4, state->initiator?0x80:0);
+
+ schannel_digest(state->creds->session_key,
+ netsec_sig, NULL,
+ data, length, digest_final);
+
+ netsec_deal_with_seq_num(state, digest_final, seq_num);
+
+ (*sig) = data_blob_talloc(mem_ctx, NULL, 32);
+
+ memcpy(sig->data, netsec_sig, 8);
+ memcpy(sig->data+8, seq_num, 8);
+ memcpy(sig->data+16, digest_final, 8);
+ memset(sig->data+24, 0, 8);
+
+ dump_data_pw("signature:", sig->data+ 0, 8);
+ dump_data_pw("seq_num :", sig->data+ 8, 8);
+ dump_data_pw("digest :", sig->data+16, 8);
+ dump_data_pw("confound :", sig->data+24, 8);
+
+ return NT_STATUS_OK;
+}
diff --git a/source4/auth/gensec/schannel_state.c b/source4/auth/gensec/schannel_state.c
new file mode 100644
index 0000000000..b2d632a1f0
--- /dev/null
+++ b/source4/auth/gensec/schannel_state.c
@@ -0,0 +1,229 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ module to store/fetch session keys for the schannel server
+
+ Copyright (C) Andrew Tridgell 2004
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "system/time.h"
+#include "auth/auth.h"
+#include "lib/ldb/include/ldb.h"
+#include "db_wrap.h"
+
+/* a reasonable amount of time to keep credentials live */
+#define SCHANNEL_CREDENTIALS_EXPIRY 600
+
+/*
+ connect to the schannel ldb
+*/
+static struct ldb_context *schannel_db_connect(TALLOC_CTX *mem_ctx)
+{
+ char *path;
+ struct ldb_context *ldb;
+
+ path = smbd_tmp_path(mem_ctx, "schannel.ldb");
+ if (!path) {
+ return NULL;
+ }
+
+ ldb = ldb_wrap_connect(mem_ctx, path, 0, NULL);
+ talloc_free(path);
+ if (!ldb) {
+ return NULL;
+ }
+
+ return ldb;
+}
+
+/*
+ remember an established session key for a netr server authentication
+ use a simple ldb structure
+*/
+NTSTATUS schannel_store_session_key(TALLOC_CTX *mem_ctx,
+ struct creds_CredentialState *creds)
+{
+ struct ldb_context *ldb;
+ struct ldb_message *msg;
+ struct ldb_val val, seed;
+ char *s;
+ char *f;
+ char *sct;
+ char *rid;
+ time_t expiry = time(NULL) + SCHANNEL_CREDENTIALS_EXPIRY;
+ int ret;
+
+ ldb = schannel_db_connect(mem_ctx);
+ if (ldb == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ s = talloc_asprintf(mem_ctx, "%u", (unsigned int)expiry);
+
+ if (s == NULL) {
+ talloc_free(ldb);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ f = talloc_asprintf(mem_ctx, "%u", (unsigned int)creds->negotiate_flags);
+
+ if (f == NULL) {
+ talloc_free(ldb);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ sct = talloc_asprintf(mem_ctx, "%u", (unsigned int)creds->secure_channel_type);
+
+ if (sct == NULL) {
+ talloc_free(ldb);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ rid = talloc_asprintf(mem_ctx, "%u", (unsigned int)creds->rid);
+
+ if (rid == NULL) {
+ talloc_free(ldb);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ msg = ldb_msg_new(mem_ctx);
+ if (msg == NULL) {
+ talloc_free(ldb);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ msg->dn = talloc_asprintf(msg, "computerName=%s", creds->computer_name);
+ if (msg->dn == NULL) {
+ talloc_free(ldb);
+ talloc_free(msg);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ val.data = creds->session_key;
+ val.length = sizeof(creds->session_key);
+
+ seed.data = creds->seed.data;
+ seed.length = sizeof(creds->seed.data);
+
+ ldb_msg_add_value(ldb, msg, "sessionKey", &val);
+ ldb_msg_add_value(ldb, msg, "seed", &seed);
+ ldb_msg_add_string(ldb, msg, "expiry", s);
+ ldb_msg_add_string(ldb, msg, "negotiateFlags", f);
+ ldb_msg_add_string(ldb, msg, "secureChannelType", sct);
+ ldb_msg_add_string(ldb, msg, "accountName", creds->account_name);
+ ldb_msg_add_string(ldb, msg, "computerName", creds->computer_name);
+ ldb_msg_add_string(ldb, msg, "flatname", creds->domain);
+ ldb_msg_add_string(ldb, msg, "rid", rid);
+
+ ldb_delete(ldb, msg->dn);
+
+ ret = ldb_add(ldb, msg);
+
+ talloc_free(s);
+
+ if (ret != 0) {
+ DEBUG(0,("Unable to add %s to session key db - %s\n",
+ msg->dn, ldb_errstring(ldb)));
+ talloc_free(ldb);
+ talloc_free(msg);
+ return NT_STATUS_INTERNAL_DB_CORRUPTION;
+ }
+
+ talloc_free(msg);
+ talloc_free(ldb);
+
+ return NT_STATUS_OK;
+}
+
+
+/*
+ read back a credentials back for a computer
+*/
+NTSTATUS schannel_fetch_session_key(TALLOC_CTX *mem_ctx,
+ const char *computer_name,
+ const char *domain,
+ struct creds_CredentialState **creds)
+{
+ struct ldb_context *ldb;
+ time_t expiry;
+ struct ldb_message **res;
+ int ret;
+ const struct ldb_val *val;
+ char *expr=NULL;
+
+ *creds = talloc_zero(mem_ctx, struct creds_CredentialState);
+ if (!*creds) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ ldb = schannel_db_connect(mem_ctx);
+ if (ldb == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ expr = talloc_asprintf(mem_ctx, "(&(computerName=%s)(flatname=%s))", computer_name, domain);
+ if (expr == NULL) {
+ talloc_free(ldb);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ ret = ldb_search(ldb, NULL, LDB_SCOPE_SUBTREE, expr, NULL, &res);
+ if (ret != 1) {
+ talloc_free(ldb);
+ return NT_STATUS_INVALID_HANDLE;
+ }
+
+ expiry = ldb_msg_find_uint(res[0], "expiry", 0);
+ if (expiry < time(NULL)) {
+ DEBUG(1,("schannel: attempt to use expired session key for %s\n", computer_name));
+ talloc_free(ldb);
+ return NT_STATUS_INVALID_HANDLE;
+ }
+
+ val = ldb_msg_find_ldb_val(res[0], "sessionKey");
+ if (val == NULL || val->length != 16) {
+ talloc_free(ldb);
+ return NT_STATUS_INVALID_HANDLE;
+ }
+
+ memcpy((*creds)->session_key, val->data, 16);
+
+ val = ldb_msg_find_ldb_val(res[0], "seed");
+ if (val == NULL || val->length != 8) {
+ talloc_free(ldb);
+ return NT_STATUS_INVALID_HANDLE;
+ }
+
+ memcpy((*creds)->seed.data, val->data, 8);
+
+ (*creds)->negotiate_flags = ldb_msg_find_int(res[0], "negotiateFlags", 0);
+
+ (*creds)->secure_channel_type = ldb_msg_find_int(res[0], "secureChannelType", 0);
+
+ (*creds)->account_name = talloc_reference(*creds, ldb_msg_find_string(res[0], "accountName", NULL));
+
+ (*creds)->computer_name = talloc_reference(*creds, ldb_msg_find_string(res[0], "computerName", NULL));
+
+ (*creds)->domain = talloc_reference(*creds, ldb_msg_find_string(res[0], "flatname", NULL));
+
+ (*creds)->rid = ldb_msg_find_uint(res[0], "rid", 0);
+
+ talloc_free(ldb);
+
+ return NT_STATUS_OK;
+}
diff --git a/source4/auth/gensec/spnego.c b/source4/auth/gensec/spnego.c
new file mode 100644
index 0000000000..f5a091cd78
--- /dev/null
+++ b/source4/auth/gensec/spnego.c
@@ -0,0 +1,884 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ RFC2478 Compliant SPNEGO implementation
+
+ Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "auth/auth.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
+
+enum spnego_state_position {
+ SPNEGO_SERVER_START,
+ SPNEGO_CLIENT_START,
+ SPNEGO_SERVER_TARG,
+ SPNEGO_CLIENT_TARG,
+ SPNEGO_FALLBACK,
+ SPNEGO_DONE
+};
+
+struct spnego_state {
+ uint_t ref_count;
+ enum spnego_message_type expected_packet;
+ enum spnego_state_position state_position;
+ struct gensec_security *sub_sec_security;
+ BOOL no_response_expected;
+};
+
+
+static NTSTATUS gensec_spnego_client_start(struct gensec_security *gensec_security)
+{
+ struct spnego_state *spnego_state;
+
+ spnego_state = talloc(gensec_security, struct spnego_state);
+ if (!spnego_state) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ spnego_state->expected_packet = SPNEGO_NEG_TOKEN_INIT;
+ spnego_state->state_position = SPNEGO_CLIENT_START;
+ spnego_state->sub_sec_security = NULL;
+ spnego_state->no_response_expected = False;
+
+ gensec_security->private_data = spnego_state;
+ return NT_STATUS_OK;
+}
+
+static NTSTATUS gensec_spnego_server_start(struct gensec_security *gensec_security)
+{
+ struct spnego_state *spnego_state;
+
+ spnego_state = talloc(gensec_security, struct spnego_state);
+ if (!spnego_state) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ spnego_state->expected_packet = SPNEGO_NEG_TOKEN_INIT;
+ spnego_state->state_position = SPNEGO_SERVER_START;
+ spnego_state->sub_sec_security = NULL;
+ spnego_state->no_response_expected = False;
+
+ gensec_security->private_data = spnego_state;
+ return NT_STATUS_OK;
+}
+
+/*
+ wrappers for the spnego_*() functions
+*/
+static NTSTATUS gensec_spnego_unseal_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ struct spnego_state *spnego_state = gensec_security->private_data;
+
+ if (spnego_state->state_position != SPNEGO_DONE
+ && spnego_state->state_position != SPNEGO_FALLBACK) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ return gensec_unseal_packet(spnego_state->sub_sec_security,
+ mem_ctx,
+ data, length,
+ whole_pdu, pdu_length,
+ sig);
+}
+
+static NTSTATUS gensec_spnego_check_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ const DATA_BLOB *sig)
+{
+ struct spnego_state *spnego_state = gensec_security->private_data;
+
+ if (spnego_state->state_position != SPNEGO_DONE
+ && spnego_state->state_position != SPNEGO_FALLBACK) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ return gensec_check_packet(spnego_state->sub_sec_security,
+ mem_ctx,
+ data, length,
+ whole_pdu, pdu_length,
+ sig);
+}
+
+static NTSTATUS gensec_spnego_seal_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ struct spnego_state *spnego_state = gensec_security->private_data;
+
+ if (spnego_state->state_position != SPNEGO_DONE
+ && spnego_state->state_position != SPNEGO_FALLBACK) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ return gensec_seal_packet(spnego_state->sub_sec_security,
+ mem_ctx,
+ data, length,
+ whole_pdu, pdu_length,
+ sig);
+}
+
+static NTSTATUS gensec_spnego_sign_packet(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ DATA_BLOB *sig)
+{
+ struct spnego_state *spnego_state = gensec_security->private_data;
+
+ if (spnego_state->state_position != SPNEGO_DONE
+ && spnego_state->state_position != SPNEGO_FALLBACK) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ return gensec_sign_packet(spnego_state->sub_sec_security,
+ mem_ctx,
+ data, length,
+ whole_pdu, pdu_length,
+ sig);
+}
+
+static NTSTATUS gensec_spnego_wrap(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out)
+{
+ struct spnego_state *spnego_state = gensec_security->private_data;
+
+ if (spnego_state->state_position != SPNEGO_DONE
+ && spnego_state->state_position != SPNEGO_FALLBACK) {
+ DEBUG(1, ("gensec_spnego_wrap: wrong state for wrap\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ return gensec_wrap(spnego_state->sub_sec_security,
+ mem_ctx, in, out);
+}
+
+static NTSTATUS gensec_spnego_unwrap(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out)
+{
+ struct spnego_state *spnego_state = gensec_security->private_data;
+
+ if (spnego_state->state_position != SPNEGO_DONE
+ && spnego_state->state_position != SPNEGO_FALLBACK) {
+ DEBUG(1, ("gensec_spnego_unwrap: wrong state for unwrap\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ return gensec_unwrap(spnego_state->sub_sec_security,
+ mem_ctx, in, out);
+}
+
+static size_t gensec_spnego_sig_size(struct gensec_security *gensec_security)
+{
+ struct spnego_state *spnego_state = gensec_security->private_data;
+
+ if (spnego_state->state_position != SPNEGO_DONE
+ && spnego_state->state_position != SPNEGO_FALLBACK) {
+ return 0;
+ }
+
+ return gensec_sig_size(spnego_state->sub_sec_security);
+}
+
+static NTSTATUS gensec_spnego_session_key(struct gensec_security *gensec_security,
+ DATA_BLOB *session_key)
+{
+ struct spnego_state *spnego_state = gensec_security->private_data;
+ if (!spnego_state->sub_sec_security) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ return gensec_session_key(spnego_state->sub_sec_security,
+ session_key);
+}
+
+static NTSTATUS gensec_spnego_session_info(struct gensec_security *gensec_security,
+ struct auth_session_info **session_info)
+{
+ struct spnego_state *spnego_state = gensec_security->private_data;
+ if (!spnego_state->sub_sec_security) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ return gensec_session_info(spnego_state->sub_sec_security,
+ session_info);
+}
+
+/** Fallback to another GENSEC mechanism, based on magic strings
+ *
+ * This is the 'fallback' case, where we don't get SPNEGO, and have to
+ * try all the other options (and hope they all have a magic string
+ * they check)
+*/
+
+static NTSTATUS gensec_spnego_server_try_fallback(struct gensec_security *gensec_security,
+ struct spnego_state *spnego_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out)
+{
+ int i;
+ int num_ops;
+ const struct gensec_security_ops **all_ops = gensec_security_all(&num_ops);
+ for (i=0; i < num_ops; i++) {
+ NTSTATUS nt_status;
+ if (!all_ops[i]->oid) {
+ continue;
+ }
+ if (strcasecmp(GENSEC_OID_SPNEGO,all_ops[i]->oid) == 0) {
+ continue;
+ }
+
+ nt_status = gensec_subcontext_start(spnego_state,
+ gensec_security,
+ &spnego_state->sub_sec_security);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ return nt_status;
+ }
+ /* select the sub context */
+ nt_status = gensec_start_mech_by_oid(spnego_state->sub_sec_security,
+ all_ops[i]->oid);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ talloc_free(spnego_state->sub_sec_security);
+ spnego_state->sub_sec_security = NULL;
+ continue;
+ }
+ nt_status = gensec_update(spnego_state->sub_sec_security,
+ out_mem_ctx, in, out);
+ if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ spnego_state->state_position = SPNEGO_FALLBACK;
+ return nt_status;
+ }
+ talloc_free(spnego_state->sub_sec_security);
+ spnego_state->sub_sec_security = NULL;
+ }
+ DEBUG(1, ("Failed to parse SPNEGO request\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+
+}
+
+/*
+ Parse the netTokenInit from the client, to the server.
+
+
+*/
+
+static NTSTATUS gensec_spnego_server_parse_negTokenInit(struct gensec_security *gensec_security,
+ struct spnego_state *spnego_state,
+ TALLOC_CTX *out_mem_ctx,
+ const char **mechType,
+ const DATA_BLOB unwrapped_in, DATA_BLOB *unwrapped_out)
+{
+ NTSTATUS nt_status;
+
+ if (!mechType || !mechType[0]) {
+ DEBUG(1, ("SPNEGO: Could not find a suitable mechtype in NEG_TOKEN_INIT\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ nt_status = gensec_subcontext_start(spnego_state,
+ gensec_security,
+ &spnego_state->sub_sec_security);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ return nt_status;
+ }
+ /* select the sub context */
+ nt_status = gensec_start_mech_by_oid(spnego_state->sub_sec_security,
+ mechType[0]);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ talloc_free(spnego_state->sub_sec_security);
+ spnego_state->sub_sec_security = NULL;
+ return nt_status;
+ }
+
+ if (!unwrapped_in.length) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ nt_status = gensec_update(spnego_state->sub_sec_security,
+ out_mem_ctx,
+ unwrapped_in,
+ unwrapped_out);
+
+ if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED) && !NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(1, ("SPNEGO(%s) NEG_TOKEN_INIT failed: %s\n",
+ spnego_state->sub_sec_security->ops->name, nt_errstr(nt_status)));
+ talloc_free(spnego_state->sub_sec_security);
+ spnego_state->sub_sec_security = NULL;
+ }
+ return nt_status;
+}
+
+static NTSTATUS gensec_spnego_client_parse_negTokenInit(struct gensec_security *gensec_security,
+ struct spnego_state *spnego_state,
+ TALLOC_CTX *out_mem_ctx,
+ const char **mechType,
+ const DATA_BLOB unwrapped_in, DATA_BLOB *unwrapped_out)
+{
+ int i;
+ NTSTATUS nt_status;
+ DATA_BLOB null_data_blob = data_blob(NULL,0);
+
+ for (i=0; mechType && mechType[i]; i++) {
+ nt_status = gensec_subcontext_start(spnego_state,
+ gensec_security,
+ &spnego_state->sub_sec_security);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ break;
+ }
+ /* select the sub context */
+ nt_status = gensec_start_mech_by_oid(spnego_state->sub_sec_security,
+ mechType[i]);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ talloc_free(spnego_state->sub_sec_security);
+ spnego_state->sub_sec_security = NULL;
+ continue;
+ }
+
+ if (i == 0) {
+ nt_status = gensec_update(spnego_state->sub_sec_security,
+ out_mem_ctx,
+ unwrapped_in,
+ unwrapped_out);
+ } else {
+ /* only get the helping start blob for the first OID */
+ nt_status = gensec_update(spnego_state->sub_sec_security,
+ out_mem_ctx,
+ null_data_blob,
+ unwrapped_out);
+ }
+ if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED) && !NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(1, ("SPNEGO(%s) NEG_TOKEN_INIT failed: %s\n",
+ spnego_state->sub_sec_security->ops->name, nt_errstr(nt_status)));
+ talloc_free(spnego_state->sub_sec_security);
+ spnego_state->sub_sec_security = NULL;
+ }
+ return nt_status;
+ }
+ if (!mechType || !mechType[i]) {
+ DEBUG(1, ("SPNEGO: Could not find a suitable mechtype in NEG_TOKEN_INIT\n"));
+ }
+ return NT_STATUS_INVALID_PARAMETER;
+}
+
+/** create a client negTokenInit
+ *
+ * This is the case, where the client is the first one who sends data
+*/
+
+static NTSTATUS gensec_spnego_client_negTokenInit(struct gensec_security *gensec_security,
+ struct spnego_state *spnego_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out)
+{
+ DATA_BLOB null_data_blob = data_blob(NULL,0);
+ NTSTATUS nt_status;
+ const char **mechTypes = NULL;
+ DATA_BLOB unwrapped_out = data_blob(NULL,0);
+
+ mechTypes = gensec_security_oids(out_mem_ctx, GENSEC_OID_SPNEGO);
+
+ if (!mechTypes) {
+ DEBUG(1, ("no GENSEC OID backends available\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ nt_status = gensec_subcontext_start(spnego_state,
+ gensec_security,
+ &spnego_state->sub_sec_security);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ return nt_status;
+ }
+ /* select our preferred mech */
+ nt_status = gensec_start_mech_by_oid(spnego_state->sub_sec_security,
+ mechTypes[0]);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ talloc_free(spnego_state->sub_sec_security);
+ spnego_state->sub_sec_security = NULL;
+ return nt_status;
+ }
+ nt_status = gensec_update(spnego_state->sub_sec_security,
+ out_mem_ctx, in, &unwrapped_out);
+ if (NT_STATUS_IS_OK(nt_status) || NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ struct spnego_data spnego_out;
+ spnego_out.type = SPNEGO_NEG_TOKEN_INIT;
+ spnego_out.negTokenInit.mechTypes = mechTypes;
+ spnego_out.negTokenInit.reqFlags = 0;
+ spnego_out.negTokenInit.mechListMIC = null_data_blob;
+ spnego_out.negTokenInit.mechToken = unwrapped_out;
+
+ if (spnego_write_data(out_mem_ctx, out, &spnego_out) == -1) {
+ DEBUG(1, ("Failed to write SPNEGO reply to NEG_TOKEN_INIT\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* set next state */
+ spnego_state->expected_packet = SPNEGO_NEG_TOKEN_TARG;
+ spnego_state->state_position = SPNEGO_CLIENT_TARG;
+
+ if (NT_STATUS_IS_OK(nt_status)) {
+ spnego_state->no_response_expected = True;
+ }
+
+ return NT_STATUS_MORE_PROCESSING_REQUIRED;
+ }
+ talloc_free(spnego_state->sub_sec_security);
+ spnego_state->sub_sec_security = NULL;
+
+ DEBUG(1, ("Failed to setup SPNEGO negTokenInit request: %s\n", nt_errstr(nt_status)));
+ return NT_STATUS_INVALID_PARAMETER;
+}
+
+
+/** create a client negTokenTarg
+ *
+ * This is the case, where the client is the first one who sends data
+*/
+
+static NTSTATUS gensec_spnego_server_negTokenTarg(struct gensec_security *gensec_security,
+ struct spnego_state *spnego_state,
+ TALLOC_CTX *out_mem_ctx,
+ NTSTATUS nt_status,
+ const DATA_BLOB unwrapped_out, DATA_BLOB *out)
+{
+ struct spnego_data spnego_out;
+ DATA_BLOB null_data_blob = data_blob(NULL, 0);
+
+ /* compose reply */
+ spnego_out.type = SPNEGO_NEG_TOKEN_TARG;
+ spnego_out.negTokenTarg.responseToken = unwrapped_out;
+ spnego_out.negTokenTarg.mechListMIC = null_data_blob;
+ spnego_out.negTokenTarg.supportedMech = NULL;
+
+ if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ spnego_out.negTokenTarg.supportedMech
+ = spnego_state->sub_sec_security->ops->oid;
+ spnego_out.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
+ spnego_state->state_position = SPNEGO_SERVER_TARG;
+ } else if (NT_STATUS_IS_OK(nt_status)) {
+ if (unwrapped_out.data) {
+ spnego_out.negTokenTarg.supportedMech
+ = spnego_state->sub_sec_security->ops->oid;
+ }
+ spnego_out.negTokenTarg.negResult = SPNEGO_ACCEPT_COMPLETED;
+ spnego_state->state_position = SPNEGO_DONE;
+ } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_INVALID_PARAMETER)) {
+ if (spnego_state->sub_sec_security) {
+ /* we have a mech, but we just didn't get the input parameter */
+ spnego_out.negTokenTarg.supportedMech
+ = spnego_state->sub_sec_security->ops->oid;
+ } else {
+ const char **mechTypes = gensec_security_oids(out_mem_ctx, GENSEC_OID_SPNEGO);
+ if (!mechTypes) {
+ DEBUG(1, ("no GENSEC OID backends available\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ nt_status = gensec_subcontext_start(spnego_state,
+ gensec_security,
+ &spnego_state->sub_sec_security);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ return nt_status;
+ }
+ /* select our preferred mech */
+ nt_status = gensec_start_mech_by_oid(spnego_state->sub_sec_security,
+ mechTypes[0]);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ talloc_free(spnego_state->sub_sec_security);
+ spnego_state->sub_sec_security = NULL;
+ return nt_status;
+ }
+
+ /* we should be sending the whole list here */
+ spnego_out.negTokenTarg.supportedMech = mechTypes[0];
+ }
+
+ spnego_out.negTokenTarg.negResult = SPNEGO_ACCEPT_INCOMPLETE;
+ spnego_state->state_position = SPNEGO_SERVER_TARG;
+ nt_status = NT_STATUS_MORE_PROCESSING_REQUIRED;
+ } else {
+ spnego_out.negTokenTarg.negResult = SPNEGO_REJECT;
+ DEBUG(2, ("SPNEGO login failed: %s\n", nt_errstr(nt_status)));
+ spnego_state->state_position = SPNEGO_DONE;
+ }
+
+ if (spnego_write_data(out_mem_ctx, out, &spnego_out) == -1) {
+ DEBUG(1, ("Failed to write SPNEGO reply to NEG_TOKEN_TARG\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ spnego_state->expected_packet = SPNEGO_NEG_TOKEN_TARG;
+
+ return nt_status;
+}
+
+
+static NTSTATUS gensec_spnego_update(struct gensec_security *gensec_security, TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out)
+{
+ struct spnego_state *spnego_state = gensec_security->private_data;
+ DATA_BLOB null_data_blob = data_blob(NULL, 0);
+ DATA_BLOB unwrapped_out = data_blob(NULL, 0);
+ struct spnego_data spnego_out;
+ struct spnego_data spnego;
+
+ ssize_t len;
+
+ *out = data_blob(NULL, 0);
+
+ if (!out_mem_ctx) {
+ out_mem_ctx = spnego_state;
+ }
+
+ /* and switch into the state machine */
+
+ switch (spnego_state->state_position) {
+ case SPNEGO_FALLBACK:
+ return gensec_update(spnego_state->sub_sec_security,
+ out_mem_ctx, in, out);
+ case SPNEGO_SERVER_START:
+ {
+ if (in.length) {
+ NTSTATUS nt_status;
+
+ len = spnego_read_data(in, &spnego);
+ if (len == -1) {
+ return gensec_spnego_server_try_fallback(gensec_security, spnego_state, out_mem_ctx, in, out);
+ }
+ /* client sent NegTargetInit, we send NegTokenTarg */
+
+ /* OK, so it's real SPNEGO, check the packet's the one we expect */
+ if (spnego.type != spnego_state->expected_packet) {
+ DEBUG(1, ("Invalid SPNEGO request: %d, expected %d\n", spnego.type,
+ spnego_state->expected_packet));
+ dump_data(1, in.data, in.length);
+ spnego_free_data(&spnego);
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ nt_status = gensec_spnego_server_parse_negTokenInit(gensec_security,
+ spnego_state,
+ out_mem_ctx,
+ spnego.negTokenInit.mechTypes,
+ spnego.negTokenInit.mechToken,
+ &unwrapped_out);
+
+ nt_status = gensec_spnego_server_negTokenTarg(gensec_security,
+ spnego_state,
+ out_mem_ctx,
+ nt_status,
+ unwrapped_out,
+ out);
+
+ spnego_free_data(&spnego);
+
+ return nt_status;
+ } else {
+ const char **mechlist = gensec_security_oids(out_mem_ctx, GENSEC_OID_SPNEGO);
+
+ spnego_out.type = SPNEGO_NEG_TOKEN_INIT;
+ spnego_out.negTokenInit.mechTypes = mechlist;
+ spnego_out.negTokenInit.reqFlags = 0;
+ spnego_out.negTokenInit.mechListMIC
+ = data_blob_string_const(talloc_asprintf(out_mem_ctx, "%s$@%s", lp_netbios_name(), lp_realm()));
+ spnego_out.negTokenInit.mechToken = unwrapped_out;
+
+ if (spnego_write_data(out_mem_ctx, out, &spnego_out) == -1) {
+ DEBUG(1, ("Failed to write SPNEGO reply to NEG_TOKEN_INIT\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* set next state */
+ spnego_state->expected_packet = SPNEGO_NEG_TOKEN_TARG;
+ spnego_state->state_position = SPNEGO_SERVER_TARG;
+
+ return NT_STATUS_MORE_PROCESSING_REQUIRED;
+ }
+ }
+
+ case SPNEGO_CLIENT_START:
+ {
+ /* The server offers a list of mechanisms */
+
+ const char *my_mechs[] = {NULL, NULL};
+ NTSTATUS nt_status = NT_STATUS_INVALID_PARAMETER;
+
+ if (!in.length) {
+ /* client to produce negTokenInit */
+ return gensec_spnego_client_negTokenInit(gensec_security, spnego_state,
+ out_mem_ctx, in, out);
+ }
+
+ len = spnego_read_data(in, &spnego);
+
+ if (len == -1) {
+ DEBUG(1, ("Invalid SPNEGO request:\n"));
+ dump_data(1, in.data, in.length);
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* OK, so it's real SPNEGO, check the packet's the one we expect */
+ if (spnego.type != spnego_state->expected_packet) {
+ DEBUG(1, ("Invalid SPNEGO request: %d, expected %d\n", spnego.type,
+ spnego_state->expected_packet));
+ dump_data(1, in.data, in.length);
+ spnego_free_data(&spnego);
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (spnego.negTokenInit.targetPrincipal) {
+ DEBUG(5, ("Server claims it's principal name is %s (ignored)\n", spnego.negTokenInit.targetPrincipal));
+ }
+
+ nt_status = gensec_spnego_client_parse_negTokenInit(gensec_security,
+ spnego_state,
+ out_mem_ctx,
+ spnego.negTokenInit.mechTypes,
+ spnego.negTokenInit.mechToken,
+ &unwrapped_out);
+
+ if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED) && !NT_STATUS_IS_OK(nt_status)) {
+ spnego_free_data(&spnego);
+ return nt_status;
+ }
+
+ /* compose reply */
+ my_mechs[0] = spnego_state->sub_sec_security->ops->oid;
+
+ spnego_out.type = SPNEGO_NEG_TOKEN_INIT;
+ spnego_out.negTokenInit.mechTypes = my_mechs;
+ spnego_out.negTokenInit.reqFlags = 0;
+ spnego_out.negTokenInit.mechListMIC = null_data_blob;
+ spnego_out.negTokenInit.mechToken = unwrapped_out;
+
+ if (spnego_write_data(out_mem_ctx, out, &spnego_out) == -1) {
+ DEBUG(1, ("Failed to write SPNEGO reply to NEG_TOKEN_INIT\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* set next state */
+ spnego_state->expected_packet = SPNEGO_NEG_TOKEN_TARG;
+ spnego_state->state_position = SPNEGO_CLIENT_TARG;
+
+ if (NT_STATUS_IS_OK(nt_status)) {
+ spnego_state->no_response_expected = True;
+ }
+
+ return NT_STATUS_MORE_PROCESSING_REQUIRED;
+ }
+ case SPNEGO_SERVER_TARG:
+ {
+ NTSTATUS nt_status;
+ if (!in.length) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ len = spnego_read_data(in, &spnego);
+
+ if (len == -1) {
+ DEBUG(1, ("Invalid SPNEGO request:\n"));
+ dump_data(1, in.data, in.length);
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* OK, so it's real SPNEGO, check the packet's the one we expect */
+ if (spnego.type != spnego_state->expected_packet) {
+ DEBUG(1, ("Invalid SPNEGO request: %d, expected %d\n", spnego.type,
+ spnego_state->expected_packet));
+ dump_data(1, in.data, in.length);
+ spnego_free_data(&spnego);
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (!spnego_state->sub_sec_security) {
+ DEBUG(1, ("SPNEGO: Did not setup a mech in NEG_TOKEN_INIT\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ nt_status = gensec_update(spnego_state->sub_sec_security,
+ out_mem_ctx,
+ spnego.negTokenTarg.responseToken,
+ &unwrapped_out);
+
+ nt_status = gensec_spnego_server_negTokenTarg(gensec_security,
+ spnego_state,
+ out_mem_ctx,
+ nt_status,
+ unwrapped_out,
+ out);
+
+ spnego_free_data(&spnego);
+
+ return nt_status;
+ }
+ case SPNEGO_CLIENT_TARG:
+ {
+ NTSTATUS nt_status;
+ if (!in.length) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ len = spnego_read_data(in, &spnego);
+
+ if (len == -1) {
+ DEBUG(1, ("Invalid SPNEGO request:\n"));
+ dump_data(1, in.data, in.length);
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* OK, so it's real SPNEGO, check the packet's the one we expect */
+ if (spnego.type != spnego_state->expected_packet) {
+ DEBUG(1, ("Invalid SPNEGO request: %d, expected %d\n", spnego.type,
+ spnego_state->expected_packet));
+ dump_data(1, in.data, in.length);
+ spnego_free_data(&spnego);
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (spnego.negTokenTarg.negResult == SPNEGO_REJECT) {
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ if (spnego_state->no_response_expected) {
+ if (spnego.negTokenTarg.negResult != SPNEGO_ACCEPT_COMPLETED) {
+ DEBUG(3,("GENSEC SPNEGO: client GENSEC accepted, but server rejected (bad password?)\n"));
+ nt_status = NT_STATUS_INVALID_PARAMETER;
+ } else if (spnego.negTokenTarg.responseToken.length) {
+ DEBUG(2,("GENSEC SPNEGO: client GENSEC accepted, but server continued negotiation!\n"));
+ nt_status = NT_STATUS_INVALID_PARAMETER;
+ } else {
+ nt_status = NT_STATUS_OK;
+ }
+ } else {
+ nt_status = gensec_update(spnego_state->sub_sec_security,
+ out_mem_ctx,
+ spnego.negTokenTarg.responseToken,
+ &unwrapped_out);
+
+ if (NT_STATUS_IS_OK(nt_status)) {
+ spnego_state->no_response_expected = True;
+ }
+ }
+
+ spnego_free_data(&spnego);
+
+ if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)
+ && !NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(1, ("SPNEGO(%s) login failed: %s\n",
+ spnego_state->sub_sec_security->ops->name,
+ nt_errstr(nt_status)));
+ return nt_status;
+ }
+
+ if (unwrapped_out.length) {
+ /* compose reply */
+ spnego_out.type = SPNEGO_NEG_TOKEN_TARG;
+ spnego_out.negTokenTarg.negResult = SPNEGO_NONE_RESULT;
+ spnego_out.negTokenTarg.supportedMech = NULL;
+ spnego_out.negTokenTarg.responseToken = unwrapped_out;
+ spnego_out.negTokenTarg.mechListMIC = null_data_blob;
+
+ if (spnego_write_data(out_mem_ctx, out, &spnego_out) == -1) {
+ DEBUG(1, ("Failed to write SPNEGO reply to NEG_TOKEN_TARG\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ spnego_state->state_position = SPNEGO_CLIENT_TARG;
+ nt_status = NT_STATUS_MORE_PROCESSING_REQUIRED;
+ } else {
+
+ /* all done - server has accepted, and we agree */
+ *out = null_data_blob;
+
+ if (spnego.negTokenTarg.negResult != SPNEGO_ACCEPT_COMPLETED) {
+ /* unless of course it did not accept */
+ DEBUG(1,("gensec_update ok but not accepted\n"));
+ nt_status = NT_STATUS_INVALID_PARAMETER;
+ }
+ }
+
+ spnego_state->state_position = SPNEGO_DONE;
+
+ return nt_status;
+ }
+ case SPNEGO_DONE:
+ return NT_STATUS_OK;
+ }
+ return NT_STATUS_INVALID_PARAMETER;
+}
+
+static BOOL gensec_spnego_have_feature(struct gensec_security *gensec_security,
+ uint32_t feature)
+{
+ struct spnego_state *spnego_state = gensec_security->private_data;
+ if (!spnego_state->sub_sec_security) {
+ return False;
+ }
+
+ return gensec_have_feature(spnego_state->sub_sec_security,
+ feature);
+}
+
+static const struct gensec_security_ops gensec_spnego_security_ops = {
+ .name = "spnego",
+ .sasl_name = "GSS-SPNEGO",
+ .auth_type = DCERPC_AUTH_TYPE_SPNEGO,
+ .oid = GENSEC_OID_SPNEGO,
+ .client_start = gensec_spnego_client_start,
+ .server_start = gensec_spnego_server_start,
+ .update = gensec_spnego_update,
+ .seal_packet = gensec_spnego_seal_packet,
+ .sign_packet = gensec_spnego_sign_packet,
+ .sig_size = gensec_spnego_sig_size,
+ .check_packet = gensec_spnego_check_packet,
+ .unseal_packet = gensec_spnego_unseal_packet,
+ .wrap = gensec_spnego_wrap,
+ .unwrap = gensec_spnego_unwrap,
+ .session_key = gensec_spnego_session_key,
+ .session_info = gensec_spnego_session_info,
+ .have_feature = gensec_spnego_have_feature,
+ .enabled = True
+};
+
+NTSTATUS gensec_spnego_init(void)
+{
+ NTSTATUS ret;
+ ret = gensec_register(&gensec_spnego_security_ops);
+ if (!NT_STATUS_IS_OK(ret)) {
+ DEBUG(0,("Failed to register '%s' gensec backend!\n",
+ gensec_spnego_security_ops.name));
+ return ret;
+ }
+
+ return ret;
+}
diff --git a/source4/auth/gensec/spnego.h b/source4/auth/gensec/spnego.h
new file mode 100644
index 0000000000..1064370146
--- /dev/null
+++ b/source4/auth/gensec/spnego.h
@@ -0,0 +1,69 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ RFC2478 Compliant SPNEGO implementation
+
+ Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef SAMBA_SPNEGO_H
+#define SAMBA_SPNEGO_H
+
+#define SPNEGO_DELEG_FLAG 0x01
+#define SPNEGO_MUTUAL_FLAG 0x02
+#define SPNEGO_REPLAY_FLAG 0x04
+#define SPNEGO_SEQUENCE_FLAG 0x08
+#define SPNEGO_ANON_FLAG 0x10
+#define SPNEGO_CONF_FLAG 0x20
+#define SPNEGO_INTEG_FLAG 0x40
+#define SPNEGO_REQ_FLAG 0x80
+
+enum spnego_negResult {
+ SPNEGO_ACCEPT_COMPLETED = 0,
+ SPNEGO_ACCEPT_INCOMPLETE = 1,
+ SPNEGO_REJECT = 2,
+ SPNEGO_NONE_RESULT = 3
+};
+
+struct spnego_negTokenInit {
+ const char **mechTypes;
+ int reqFlags;
+ DATA_BLOB mechToken;
+ DATA_BLOB mechListMIC;
+ char *targetPrincipal;
+};
+
+struct spnego_negTokenTarg {
+ uint8_t negResult;
+ const char *supportedMech;
+ DATA_BLOB responseToken;
+ DATA_BLOB mechListMIC;
+};
+
+struct spnego_data {
+ int type;
+ struct spnego_negTokenInit negTokenInit;
+ struct spnego_negTokenTarg negTokenTarg;
+};
+
+enum spnego_message_type {
+ SPNEGO_NEG_TOKEN_INIT = 0,
+ SPNEGO_NEG_TOKEN_TARG = 1,
+};
+
+#endif
diff --git a/source4/auth/gensec/spnego_parse.c b/source4/auth/gensec/spnego_parse.c
new file mode 100644
index 0000000000..e48c32f0da
--- /dev/null
+++ b/source4/auth/gensec/spnego_parse.c
@@ -0,0 +1,375 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ RFC2478 Compliant SPNEGO implementation
+
+ Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "auth/auth.h"
+#include "asn_1.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_AUTH
+
+static BOOL read_negTokenInit(struct asn1_data *asn1, struct spnego_negTokenInit *token)
+{
+ ZERO_STRUCTP(token);
+
+ asn1_start_tag(asn1, ASN1_CONTEXT(0));
+ asn1_start_tag(asn1, ASN1_SEQUENCE(0));
+
+ while (!asn1->has_error && 0 < asn1_tag_remaining(asn1)) {
+ int i;
+ uint8_t context;
+ if (!asn1_peek_uint8(asn1, &context)) {
+ asn1->has_error = True;
+ break;
+ }
+
+ switch (context) {
+ /* Read mechTypes */
+ case ASN1_CONTEXT(0):
+ asn1_start_tag(asn1, ASN1_CONTEXT(0));
+ asn1_start_tag(asn1, ASN1_SEQUENCE(0));
+
+ token->mechTypes = talloc(NULL, const char *);
+ for (i = 0; !asn1->has_error &&
+ 0 < asn1_tag_remaining(asn1); i++) {
+ token->mechTypes = talloc_realloc(NULL,
+ token->mechTypes,
+ const char *, i+2);
+ asn1_read_OID(asn1, token->mechTypes + i);
+ if (token->mechTypes[i]) {
+ talloc_steal(token->mechTypes,
+ token->mechTypes[i]);
+ }
+ }
+ token->mechTypes[i] = NULL;
+
+ asn1_end_tag(asn1);
+ asn1_end_tag(asn1);
+ break;
+ /* Read reqFlags */
+ case ASN1_CONTEXT(1):
+ asn1_start_tag(asn1, ASN1_CONTEXT(1));
+ asn1_read_Integer(asn1, &token->reqFlags);
+ token->reqFlags |= SPNEGO_REQ_FLAG;
+ asn1_end_tag(asn1);
+ break;
+ /* Read mechToken */
+ case ASN1_CONTEXT(2):
+ asn1_start_tag(asn1, ASN1_CONTEXT(2));
+ asn1_read_OctetString(asn1, &token->mechToken);
+ asn1_end_tag(asn1);
+ break;
+ /* Read mecListMIC */
+ case ASN1_CONTEXT(3):
+ {
+ uint8_t type_peek;
+ asn1_start_tag(asn1, ASN1_CONTEXT(3));
+ if (!asn1_peek_uint8(asn1, &type_peek)) {
+ asn1->has_error = True;
+ break;
+ }
+ if (type_peek == ASN1_OCTET_STRING) {
+ asn1_read_OctetString(asn1,
+ &token->mechListMIC);
+ } else {
+ /* RFC 2478 says we have an Octet String here,
+ but W2k sends something different... */
+ char *mechListMIC;
+ asn1_push_tag(asn1, ASN1_SEQUENCE(0));
+ asn1_push_tag(asn1, ASN1_CONTEXT(0));
+ asn1_read_GeneralString(asn1, &mechListMIC);
+ asn1_pop_tag(asn1);
+ asn1_pop_tag(asn1);
+
+ token->targetPrincipal = mechListMIC;
+ }
+ asn1_end_tag(asn1);
+ break;
+ }
+ default:
+ asn1->has_error = True;
+ break;
+ }
+ }
+
+ asn1_end_tag(asn1);
+ asn1_end_tag(asn1);
+
+ return !asn1->has_error;
+}
+
+static BOOL write_negTokenInit(struct asn1_data *asn1, struct spnego_negTokenInit *token)
+{
+ asn1_push_tag(asn1, ASN1_CONTEXT(0));
+ asn1_push_tag(asn1, ASN1_SEQUENCE(0));
+
+ /* Write mechTypes */
+ if (token->mechTypes && *token->mechTypes) {
+ int i;
+
+ asn1_push_tag(asn1, ASN1_CONTEXT(0));
+ asn1_push_tag(asn1, ASN1_SEQUENCE(0));
+ for (i = 0; token->mechTypes[i]; i++) {
+ asn1_write_OID(asn1, token->mechTypes[i]);
+ }
+ asn1_pop_tag(asn1);
+ asn1_pop_tag(asn1);
+ }
+
+ /* write reqFlags */
+ if (token->reqFlags & SPNEGO_REQ_FLAG) {
+ int flags = token->reqFlags & ~SPNEGO_REQ_FLAG;
+
+ asn1_push_tag(asn1, ASN1_CONTEXT(1));
+ asn1_write_Integer(asn1, flags);
+ asn1_pop_tag(asn1);
+ }
+
+ /* write mechToken */
+ if (token->mechToken.data) {
+ asn1_push_tag(asn1, ASN1_CONTEXT(2));
+ asn1_write_OctetString(asn1, token->mechToken.data,
+ token->mechToken.length);
+ asn1_pop_tag(asn1);
+ }
+
+ /* write mechListMIC */
+ if (token->mechListMIC.data) {
+ asn1_push_tag(asn1, ASN1_CONTEXT(3));
+#if 0
+ /* This is what RFC 2478 says ... */
+ asn1_write_OctetString(asn1, token->mechListMIC.data,
+ token->mechListMIC.length);
+#else
+ /* ... but unfortunately this is what Windows
+ sends/expects */
+ asn1_push_tag(asn1, ASN1_SEQUENCE(0));
+ asn1_push_tag(asn1, ASN1_CONTEXT(0));
+ asn1_push_tag(asn1, ASN1_GENERAL_STRING);
+ asn1_write(asn1, token->mechListMIC.data,
+ token->mechListMIC.length);
+ asn1_pop_tag(asn1);
+ asn1_pop_tag(asn1);
+ asn1_pop_tag(asn1);
+#endif
+ asn1_pop_tag(asn1);
+ }
+
+ asn1_pop_tag(asn1);
+ asn1_pop_tag(asn1);
+
+ return !asn1->has_error;
+}
+
+static BOOL read_negTokenTarg(struct asn1_data *asn1, struct spnego_negTokenTarg *token)
+{
+ ZERO_STRUCTP(token);
+
+ asn1_start_tag(asn1, ASN1_CONTEXT(1));
+ asn1_start_tag(asn1, ASN1_SEQUENCE(0));
+
+ while (!asn1->has_error && 0 < asn1_tag_remaining(asn1)) {
+ uint8_t context;
+ if (!asn1_peek_uint8(asn1, &context)) {
+ asn1->has_error = True;
+ break;
+ }
+
+ switch (context) {
+ case ASN1_CONTEXT(0):
+ asn1_start_tag(asn1, ASN1_CONTEXT(0));
+ asn1_start_tag(asn1, ASN1_ENUMERATED);
+ asn1_read_uint8(asn1, &token->negResult);
+ asn1_end_tag(asn1);
+ asn1_end_tag(asn1);
+ break;
+ case ASN1_CONTEXT(1):
+ asn1_start_tag(asn1, ASN1_CONTEXT(1));
+ asn1_read_OID(asn1, &token->supportedMech);
+ asn1_end_tag(asn1);
+ break;
+ case ASN1_CONTEXT(2):
+ asn1_start_tag(asn1, ASN1_CONTEXT(2));
+ asn1_read_OctetString(asn1, &token->responseToken);
+ asn1_end_tag(asn1);
+ break;
+ case ASN1_CONTEXT(3):
+ asn1_start_tag(asn1, ASN1_CONTEXT(3));
+ asn1_read_OctetString(asn1, &token->mechListMIC);
+ asn1_end_tag(asn1);
+ break;
+ default:
+ asn1->has_error = True;
+ break;
+ }
+ }
+
+ asn1_end_tag(asn1);
+ asn1_end_tag(asn1);
+
+ return !asn1->has_error;
+}
+
+static BOOL write_negTokenTarg(struct asn1_data *asn1, struct spnego_negTokenTarg *token)
+{
+ asn1_push_tag(asn1, ASN1_CONTEXT(1));
+ asn1_push_tag(asn1, ASN1_SEQUENCE(0));
+
+ if (token->negResult != SPNEGO_NONE_RESULT) {
+ asn1_push_tag(asn1, ASN1_CONTEXT(0));
+ asn1_write_enumerated(asn1, token->negResult);
+ asn1_pop_tag(asn1);
+ }
+
+ if (token->supportedMech) {
+ asn1_push_tag(asn1, ASN1_CONTEXT(1));
+ asn1_write_OID(asn1, token->supportedMech);
+ asn1_pop_tag(asn1);
+ }
+
+ if (token->responseToken.data) {
+ asn1_push_tag(asn1, ASN1_CONTEXT(2));
+ asn1_write_OctetString(asn1, token->responseToken.data,
+ token->responseToken.length);
+ asn1_pop_tag(asn1);
+ }
+
+ if (token->mechListMIC.data) {
+ asn1_push_tag(asn1, ASN1_CONTEXT(3));
+ asn1_write_OctetString(asn1, token->mechListMIC.data,
+ token->mechListMIC.length);
+ asn1_pop_tag(asn1);
+ }
+
+ asn1_pop_tag(asn1);
+ asn1_pop_tag(asn1);
+
+ return !asn1->has_error;
+}
+
+ssize_t spnego_read_data(DATA_BLOB data, struct spnego_data *token)
+{
+ struct asn1_data asn1;
+ ssize_t ret = -1;
+ uint8_t context;
+
+ ZERO_STRUCTP(token);
+ ZERO_STRUCT(asn1);
+
+ if (data.length == 0) {
+ return ret;
+ }
+
+ asn1_load(&asn1, data);
+
+ if (!asn1_peek_uint8(&asn1, &context)) {
+ asn1.has_error = True;
+ } else {
+ switch (context) {
+ case ASN1_APPLICATION(0):
+ asn1_start_tag(&asn1, ASN1_APPLICATION(0));
+ asn1_check_OID(&asn1, GENSEC_OID_SPNEGO);
+ if (read_negTokenInit(&asn1, &token->negTokenInit)) {
+ token->type = SPNEGO_NEG_TOKEN_INIT;
+ }
+ asn1_end_tag(&asn1);
+ break;
+ case ASN1_CONTEXT(1):
+ if (read_negTokenTarg(&asn1, &token->negTokenTarg)) {
+ token->type = SPNEGO_NEG_TOKEN_TARG;
+ }
+ break;
+ default:
+ asn1.has_error = True;
+ break;
+ }
+ }
+
+ if (!asn1.has_error) ret = asn1.ofs;
+ asn1_free(&asn1);
+
+ return ret;
+}
+
+ssize_t spnego_write_data(TALLOC_CTX *mem_ctx, DATA_BLOB *blob, struct spnego_data *spnego)
+{
+ struct asn1_data asn1;
+ ssize_t ret = -1;
+
+ ZERO_STRUCT(asn1);
+
+ switch (spnego->type) {
+ case SPNEGO_NEG_TOKEN_INIT:
+ asn1_push_tag(&asn1, ASN1_APPLICATION(0));
+ asn1_write_OID(&asn1, GENSEC_OID_SPNEGO);
+ write_negTokenInit(&asn1, &spnego->negTokenInit);
+ asn1_pop_tag(&asn1);
+ break;
+ case SPNEGO_NEG_TOKEN_TARG:
+ write_negTokenTarg(&asn1, &spnego->negTokenTarg);
+ break;
+ default:
+ asn1.has_error = True;
+ break;
+ }
+
+ if (!asn1.has_error) {
+ *blob = data_blob_talloc(mem_ctx, asn1.data, asn1.length);
+ ret = asn1.ofs;
+ }
+ asn1_free(&asn1);
+
+ return ret;
+}
+
+BOOL spnego_free_data(struct spnego_data *spnego)
+{
+ BOOL ret = True;
+
+ if (!spnego) goto out;
+
+ switch(spnego->type) {
+ case SPNEGO_NEG_TOKEN_INIT:
+ if (spnego->negTokenInit.mechTypes) {
+ talloc_free(spnego->negTokenInit.mechTypes);
+ }
+ data_blob_free(&spnego->negTokenInit.mechToken);
+ data_blob_free(&spnego->negTokenInit.mechListMIC);
+ talloc_free(spnego->negTokenInit.targetPrincipal);
+ break;
+ case SPNEGO_NEG_TOKEN_TARG:
+ if (spnego->negTokenTarg.supportedMech) {
+ talloc_free(discard_const(spnego->negTokenTarg.supportedMech));
+ }
+ data_blob_free(&spnego->negTokenTarg.responseToken);
+ data_blob_free(&spnego->negTokenTarg.mechListMIC);
+ break;
+ default:
+ ret = False;
+ break;
+ }
+ ZERO_STRUCTP(spnego);
+out:
+ return ret;
+}
+
generated by cgit (git 2.34.1) at 2024-11-11 00:20:51 +0000