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-rw-r--r--auth/ntlmssp/gensec_ntlmssp.c245
-rw-r--r--auth/ntlmssp/ntlmssp.c144
-rw-r--r--auth/ntlmssp/ntlmssp.h227
-rw-r--r--auth/ntlmssp/ntlmssp_ndr.c133
-rw-r--r--auth/ntlmssp/ntlmssp_ndr.h38
-rw-r--r--auth/ntlmssp/ntlmssp_private.h57
-rw-r--r--auth/ntlmssp/ntlmssp_server.c582
-rw-r--r--auth/ntlmssp/ntlmssp_sign.c694
-rw-r--r--auth/ntlmssp/wscript_build3
9 files changed, 2123 insertions, 0 deletions
diff --git a/auth/ntlmssp/gensec_ntlmssp.c b/auth/ntlmssp/gensec_ntlmssp.c
new file mode 100644
index 0000000000..55b2f8748a
--- /dev/null
+++ b/auth/ntlmssp/gensec_ntlmssp.c
@@ -0,0 +1,245 @@
+/*
+ * 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> 2003-2005
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "includes.h"
+#include "auth/ntlmssp/ntlmssp.h"
+#include "auth/gensec/gensec.h"
+#include "auth/ntlmssp/ntlmssp_private.h"
+
+NTSTATUS gensec_ntlmssp_magic(struct gensec_security *gensec_security,
+ const DATA_BLOB *first_packet)
+{
+ if (ntlmssp_blob_matches_magic(first_packet)) {
+ return NT_STATUS_OK;
+ } else {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+}
+
+/**
+ * Return the NTLMSSP master session key
+ *
+ * @param ntlmssp_state NTLMSSP State
+ */
+
+NTSTATUS gensec_ntlmssp_session_key(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ DATA_BLOB *session_key)
+{
+ struct gensec_ntlmssp_context *gensec_ntlmssp =
+ talloc_get_type_abort(gensec_security->private_data,
+ struct gensec_ntlmssp_context);
+ struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
+
+ if (ntlmssp_state->expected_state != NTLMSSP_DONE) {
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+
+ if (!ntlmssp_state->session_key.data) {
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+ *session_key = data_blob_talloc(mem_ctx, ntlmssp_state->session_key.data, ntlmssp_state->session_key.length);
+ if (!session_key->data) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ return NT_STATUS_OK;
+}
+
+bool gensec_ntlmssp_have_feature(struct gensec_security *gensec_security,
+ uint32_t feature)
+{
+ struct gensec_ntlmssp_context *gensec_ntlmssp =
+ talloc_get_type_abort(gensec_security->private_data,
+ struct gensec_ntlmssp_context);
+ struct ntlmssp_state *ntlmssp_state = gensec_ntlmssp->ntlmssp_state;
+
+ if (feature & GENSEC_FEATURE_SIGN) {
+ if (!ntlmssp_state->session_key.length) {
+ return false;
+ }
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN) {
+ return true;
+ }
+ }
+ if (feature & GENSEC_FEATURE_SEAL) {
+ if (!ntlmssp_state->session_key.length) {
+ return false;
+ }
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
+ return true;
+ }
+ }
+ if (feature & GENSEC_FEATURE_SESSION_KEY) {
+ if (ntlmssp_state->session_key.length) {
+ return true;
+ }
+ }
+ if (feature & GENSEC_FEATURE_DCE_STYLE) {
+ return true;
+ }
+ if (feature & GENSEC_FEATURE_ASYNC_REPLIES) {
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
+ return true;
+ }
+ }
+ return false;
+}
+
+NTSTATUS gensec_ntlmssp_start(struct gensec_security *gensec_security)
+{
+ struct gensec_ntlmssp_context *gensec_ntlmssp;
+ struct ntlmssp_state *ntlmssp_state;
+
+ gensec_ntlmssp = talloc_zero(gensec_security,
+ struct gensec_ntlmssp_context);
+ if (!gensec_ntlmssp) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ gensec_ntlmssp->gensec_security = gensec_security;
+
+ ntlmssp_state = talloc_zero(gensec_ntlmssp,
+ struct ntlmssp_state);
+ if (!ntlmssp_state) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ ntlmssp_state->callback_private = gensec_ntlmssp;
+
+ gensec_ntlmssp->ntlmssp_state = ntlmssp_state;
+
+ gensec_security->private_data = gensec_ntlmssp;
+ return NT_STATUS_OK;
+}
+
+NTSTATUS gensec_ntlmssp_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)
+{
+ struct gensec_ntlmssp_context *gensec_ntlmssp =
+ talloc_get_type_abort(gensec_security->private_data,
+ struct gensec_ntlmssp_context);
+ NTSTATUS nt_status;
+
+ nt_status = ntlmssp_sign_packet(gensec_ntlmssp->ntlmssp_state,
+ sig_mem_ctx,
+ data, length,
+ whole_pdu, pdu_length,
+ sig);
+
+ return nt_status;
+}
+
+NTSTATUS gensec_ntlmssp_check_packet(struct gensec_security *gensec_security,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ const DATA_BLOB *sig)
+{
+ struct gensec_ntlmssp_context *gensec_ntlmssp =
+ talloc_get_type_abort(gensec_security->private_data,
+ struct gensec_ntlmssp_context);
+ NTSTATUS nt_status;
+
+ nt_status = ntlmssp_check_packet(gensec_ntlmssp->ntlmssp_state,
+ data, length,
+ whole_pdu, pdu_length,
+ sig);
+
+ return nt_status;
+}
+
+NTSTATUS gensec_ntlmssp_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)
+{
+ struct gensec_ntlmssp_context *gensec_ntlmssp =
+ talloc_get_type_abort(gensec_security->private_data,
+ struct gensec_ntlmssp_context);
+ NTSTATUS nt_status;
+
+ nt_status = ntlmssp_seal_packet(gensec_ntlmssp->ntlmssp_state,
+ sig_mem_ctx,
+ data, length,
+ whole_pdu, pdu_length,
+ sig);
+
+ return nt_status;
+}
+
+/*
+ wrappers for the ntlmssp_*() functions
+*/
+NTSTATUS gensec_ntlmssp_unseal_packet(struct gensec_security *gensec_security,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ const DATA_BLOB *sig)
+{
+ struct gensec_ntlmssp_context *gensec_ntlmssp =
+ talloc_get_type_abort(gensec_security->private_data,
+ struct gensec_ntlmssp_context);
+ NTSTATUS nt_status;
+
+ nt_status = ntlmssp_unseal_packet(gensec_ntlmssp->ntlmssp_state,
+ data, length,
+ whole_pdu, pdu_length,
+ sig);
+
+ return nt_status;
+}
+
+size_t gensec_ntlmssp_sig_size(struct gensec_security *gensec_security, size_t data_size)
+{
+ return NTLMSSP_SIG_SIZE;
+}
+
+NTSTATUS gensec_ntlmssp_wrap(struct gensec_security *gensec_security,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out)
+{
+ struct gensec_ntlmssp_context *gensec_ntlmssp =
+ talloc_get_type_abort(gensec_security->private_data,
+ struct gensec_ntlmssp_context);
+
+ return ntlmssp_wrap(gensec_ntlmssp->ntlmssp_state,
+ out_mem_ctx,
+ in, out);
+}
+
+
+NTSTATUS gensec_ntlmssp_unwrap(struct gensec_security *gensec_security,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out)
+{
+ struct gensec_ntlmssp_context *gensec_ntlmssp =
+ talloc_get_type_abort(gensec_security->private_data,
+ struct gensec_ntlmssp_context);
+
+ return ntlmssp_unwrap(gensec_ntlmssp->ntlmssp_state,
+ out_mem_ctx,
+ in, out);
+}
diff --git a/auth/ntlmssp/ntlmssp.c b/auth/ntlmssp/ntlmssp.c
new file mode 100644
index 0000000000..96793abfda
--- /dev/null
+++ b/auth/ntlmssp/ntlmssp.c
@@ -0,0 +1,144 @@
+/*
+ Unix SMB/Netbios implementation.
+ Version 3.0
+ handle NLTMSSP, server side
+
+ Copyright (C) Andrew Tridgell 2001
+ Copyright (C) Andrew Bartlett 2001-2003
+ Copyright (C) Andrew Bartlett 2005 (Updated from gensec).
+
+ 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "../auth/ntlmssp/ntlmssp.h"
+#include "../auth/ntlmssp/ntlmssp_private.h"
+
+/**
+ * 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_DATAGRAM)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_DATAGRAM\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_OEM_DOMAIN_SUPPLIED)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_OEM_DOMAIN_SUPPLIED\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_OEM_WORKSTATION_SUPPLIED)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_OEM_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_REQUEST_NON_NT_SESSION_KEY)
+ DEBUGADD(4, (" NTLMSSP_REQUEST_NON_NT_SESSION_KEY\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_NTLM2)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_NTLM2\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_TARGET_INFO)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_TARGET_INFO\n"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_VERSION)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_VERSION\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"));
+ if (neg_flags & NTLMSSP_NEGOTIATE_56)
+ DEBUGADD(4, (" NTLMSSP_NEGOTIATE_56\n"));
+}
+
+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) {
+ /* other end forcing us to use LM */
+ ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_LM_KEY;
+ ntlmssp_state->use_ntlmv2 = false;
+ } 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_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_KEY_EXCH)) {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_KEY_EXCH;
+ }
+
+ 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_VERSION)) {
+ ntlmssp_state->neg_flags &= ~NTLMSSP_NEGOTIATE_VERSION;
+ }
+
+ if ((neg_flags & NTLMSSP_REQUEST_TARGET)) {
+ ntlmssp_state->neg_flags |= NTLMSSP_REQUEST_TARGET;
+ }
+}
+
+/* Does this blob looks like it could be NTLMSSP? */
+bool ntlmssp_blob_matches_magic(const DATA_BLOB *blob)
+{
+ if (blob->length > 8 && memcmp("NTLMSSP\0", blob->data, 8) == 0) {
+ return true;
+ } else {
+ return false;
+ }
+}
diff --git a/auth/ntlmssp/ntlmssp.h b/auth/ntlmssp/ntlmssp.h
new file mode 100644
index 0000000000..93bfb25824
--- /dev/null
+++ b/auth/ntlmssp/ntlmssp.h
@@ -0,0 +1,227 @@
+/*
+ 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
+ Copyright (C) Andrew Bartlett 2010
+
+ 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "../librpc/gen_ndr/ntlmssp.h"
+
+NTSTATUS gensec_ntlmssp_init(void);
+
+struct gensec_ntlmssp_context {
+ struct gensec_security *gensec_security;
+ struct ntlmssp_state *ntlmssp_state;
+ struct auth_user_info_dc *user_info_dc;
+};
+
+/* 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 */
+};
+
+#define NTLMSSP_FEATURE_SESSION_KEY 0x00000001
+#define NTLMSSP_FEATURE_SIGN 0x00000002
+#define NTLMSSP_FEATURE_SEAL 0x00000004
+#define NTLMSSP_FEATURE_CCACHE 0x00000008
+
+union ntlmssp_crypt_state;
+
+struct ntlmssp_state
+{
+ enum ntlmssp_role role;
+ uint32_t expected_state;
+
+ bool unicode;
+ bool use_ntlmv2;
+ bool use_ccache;
+ 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 very secure... */
+
+ const char *user;
+ const char *domain;
+ uint8_t *nt_hash;
+ uint8_t *lm_hash;
+
+ struct {
+ const char *netbios_name;
+ const char *netbios_domain;
+ } client;
+
+ struct {
+ bool is_standalone;
+ const char *netbios_name;
+ const char *netbios_domain;
+ const char *dns_name;
+ const char *dns_domain;
+ } server;
+
+ 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 */
+
+ /**
+ * Private data for the callback functions
+ */
+ void *callback_private;
+
+ /**
+ * 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
+ *
+ */
+ NTSTATUS (*get_challenge)(const struct ntlmssp_state *ntlmssp_state,
+ uint8_t challenge[8]);
+
+ /**
+ * 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 challenge 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 mem_ctx Talloc context for LM and NT session key to be returned on
+ * @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, TALLOC_CTX *mem_ctx,
+ DATA_BLOB *nt_session_key, DATA_BLOB *lm_session_key);
+
+ union ntlmssp_crypt_state *crypt;
+};
+
+/* The following definitions come from libcli/auth/ntlmssp_sign.c */
+
+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);
+NTSTATUS ntlmssp_check_packet(struct ntlmssp_state *ntlmssp_state,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ const DATA_BLOB *sig) ;
+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 ntlmssp_unseal_packet(struct ntlmssp_state *ntlmssp_state,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ const DATA_BLOB *sig);
+NTSTATUS ntlmssp_wrap(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out);
+NTSTATUS ntlmssp_unwrap(struct ntlmssp_state *ntlmssp_stae,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out);
+NTSTATUS ntlmssp_sign_init(struct ntlmssp_state *ntlmssp_state);
+
+bool ntlmssp_blob_matches_magic(const DATA_BLOB *blob);
+/* The following definitions come from ../source4/auth/ntlmssp/ntlmssp.c */
+
+
+/**
+ * Return the NTLMSSP master session key
+ *
+ * @param ntlmssp_state NTLMSSP State
+ */
+NTSTATUS gensec_ntlmssp_magic(struct gensec_security *gensec_security,
+ const DATA_BLOB *first_packet);
+bool gensec_ntlmssp_have_feature(struct gensec_security *gensec_security,
+ uint32_t feature);
+NTSTATUS gensec_ntlmssp_session_key(struct gensec_security *gensec_security,
+ TALLOC_CTX *mem_ctx,
+ DATA_BLOB *session_key);
+NTSTATUS gensec_ntlmssp_start(struct gensec_security *gensec_security);
+
+/* The following definitions come from ../source4/auth/ntlmssp/ntlmssp_sign.c */
+
+NTSTATUS gensec_ntlmssp_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);
+NTSTATUS gensec_ntlmssp_check_packet(struct gensec_security *gensec_security,
+ const uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ const DATA_BLOB *sig);
+NTSTATUS gensec_ntlmssp_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 gensec_ntlmssp_unseal_packet(struct gensec_security *gensec_security,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ const DATA_BLOB *sig);
+size_t gensec_ntlmssp_sig_size(struct gensec_security *gensec_security, size_t data_size) ;
+NTSTATUS gensec_ntlmssp_wrap(struct gensec_security *gensec_security,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out);
+NTSTATUS gensec_ntlmssp_unwrap(struct gensec_security *gensec_security,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out);
diff --git a/auth/ntlmssp/ntlmssp_ndr.c b/auth/ntlmssp/ntlmssp_ndr.c
new file mode 100644
index 0000000000..af24be9dc2
--- /dev/null
+++ b/auth/ntlmssp/ntlmssp_ndr.c
@@ -0,0 +1,133 @@
+/*
+ Unix SMB/Netbios implementation.
+ NTLMSSP ndr functions
+
+ Copyright (C) Guenther Deschner 2009
+
+ 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "../librpc/gen_ndr/ndr_ntlmssp.h"
+#include "ntlmssp_ndr.h"
+
+#define NTLMSSP_PULL_MESSAGE(type, blob, mem_ctx, r) \
+do { \
+ enum ndr_err_code __ndr_err; \
+ __ndr_err = ndr_pull_struct_blob(blob, mem_ctx, r, \
+ (ndr_pull_flags_fn_t)ndr_pull_ ##type); \
+ if (!NDR_ERR_CODE_IS_SUCCESS(__ndr_err)) { \
+ return ndr_map_error2ntstatus(__ndr_err); \
+ } \
+ if (memcmp(r->Signature, "NTLMSSP\0", 8)) {\
+ return NT_STATUS_INVALID_PARAMETER; \
+ } \
+ return NT_STATUS_OK; \
+} while(0);
+
+#define NTLMSSP_PUSH_MESSAGE(type, blob, mem_ctx, r) \
+do { \
+ enum ndr_err_code __ndr_err; \
+ __ndr_err = ndr_push_struct_blob(blob, mem_ctx, r, \
+ (ndr_push_flags_fn_t)ndr_push_ ##type); \
+ if (!NDR_ERR_CODE_IS_SUCCESS(__ndr_err)) { \
+ return ndr_map_error2ntstatus(__ndr_err); \
+ } \
+ return NT_STATUS_OK; \
+} while(0);
+
+
+/**
+ * Pull NTLMSSP NEGOTIATE_MESSAGE struct from a blob
+ * @param blob The plain packet blob
+ * @param mem_ctx A talloc context
+ * @param r Pointer to a NTLMSSP NEGOTIATE_MESSAGE structure
+ */
+
+NTSTATUS ntlmssp_pull_NEGOTIATE_MESSAGE(const DATA_BLOB *blob,
+ TALLOC_CTX *mem_ctx,
+ struct NEGOTIATE_MESSAGE *r)
+{
+ NTLMSSP_PULL_MESSAGE(NEGOTIATE_MESSAGE, blob, mem_ctx, r);
+}
+
+/**
+ * Pull NTLMSSP CHALLENGE_MESSAGE struct from a blob
+ * @param blob The plain packet blob
+ * @param mem_ctx A talloc context
+ * @param r Pointer to a NTLMSSP CHALLENGE_MESSAGE structure
+ */
+
+NTSTATUS ntlmssp_pull_CHALLENGE_MESSAGE(const DATA_BLOB *blob,
+ TALLOC_CTX *mem_ctx,
+ struct CHALLENGE_MESSAGE *r)
+{
+ NTLMSSP_PULL_MESSAGE(CHALLENGE_MESSAGE, blob, mem_ctx, r);
+}
+
+/**
+ * Pull NTLMSSP AUTHENTICATE_MESSAGE struct from a blob
+ * @param blob The plain packet blob
+ * @param mem_ctx A talloc context
+ * @param r Pointer to a NTLMSSP AUTHENTICATE_MESSAGE structure
+ */
+
+NTSTATUS ntlmssp_pull_AUTHENTICATE_MESSAGE(const DATA_BLOB *blob,
+ TALLOC_CTX *mem_ctx,
+ struct AUTHENTICATE_MESSAGE *r)
+{
+ NTLMSSP_PULL_MESSAGE(AUTHENTICATE_MESSAGE, blob, mem_ctx, r);
+}
+
+/**
+ * Push NTLMSSP NEGOTIATE_MESSAGE struct into a blob
+ * @param blob The plain packet blob
+ * @param mem_ctx A talloc context
+ * @param r Pointer to a NTLMSSP NEGOTIATE_MESSAGE structure
+ */
+
+NTSTATUS ntlmssp_push_NEGOTIATE_MESSAGE(DATA_BLOB *blob,
+ TALLOC_CTX *mem_ctx,
+ const struct NEGOTIATE_MESSAGE *r)
+{
+ NTLMSSP_PUSH_MESSAGE(NEGOTIATE_MESSAGE, blob, mem_ctx, r);
+}
+
+/**
+ * Push NTLMSSP CHALLENGE_MESSAGE struct into a blob
+ * @param blob The plain packet blob
+ * @param mem_ctx A talloc context
+ * @param r Pointer to a NTLMSSP CHALLENGE_MESSAGE structure
+ */
+
+NTSTATUS ntlmssp_push_CHALLENGE_MESSAGE(DATA_BLOB *blob,
+ TALLOC_CTX *mem_ctx,
+ const struct CHALLENGE_MESSAGE *r)
+{
+ NTLMSSP_PUSH_MESSAGE(CHALLENGE_MESSAGE, blob, mem_ctx, r);
+}
+
+/**
+ * Push NTLMSSP AUTHENTICATE_MESSAGE struct into a blob
+ * @param blob The plain packet blob
+ * @param mem_ctx A talloc context
+ * @param r Pointer to a NTLMSSP AUTHENTICATE_MESSAGE structure
+ */
+
+NTSTATUS ntlmssp_push_AUTHENTICATE_MESSAGE(DATA_BLOB *blob,
+ TALLOC_CTX *mem_ctx,
+ const struct AUTHENTICATE_MESSAGE *r)
+{
+ NTLMSSP_PUSH_MESSAGE(AUTHENTICATE_MESSAGE, blob, mem_ctx, r);
+}
diff --git a/auth/ntlmssp/ntlmssp_ndr.h b/auth/ntlmssp/ntlmssp_ndr.h
new file mode 100644
index 0000000000..e61923170e
--- /dev/null
+++ b/auth/ntlmssp/ntlmssp_ndr.h
@@ -0,0 +1,38 @@
+/*
+ Unix SMB/Netbios implementation.
+ NTLMSSP ndr functions
+
+ Copyright (C) Guenther Deschner 2009
+
+ 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+NTSTATUS ntlmssp_pull_NEGOTIATE_MESSAGE(const DATA_BLOB *blob,
+ TALLOC_CTX *mem_ctx,
+ struct NEGOTIATE_MESSAGE *r);
+NTSTATUS ntlmssp_pull_CHALLENGE_MESSAGE(const DATA_BLOB *blob,
+ TALLOC_CTX *mem_ctx,
+ struct CHALLENGE_MESSAGE *r);
+NTSTATUS ntlmssp_pull_AUTHENTICATE_MESSAGE(const DATA_BLOB *blob,
+ TALLOC_CTX *mem_ctx,
+ struct AUTHENTICATE_MESSAGE *r);
+NTSTATUS ntlmssp_push_NEGOTIATE_MESSAGE(DATA_BLOB *blob,
+ TALLOC_CTX *mem_ctx,
+ const struct NEGOTIATE_MESSAGE *r);
+NTSTATUS ntlmssp_push_CHALLENGE_MESSAGE(DATA_BLOB *blob,
+ TALLOC_CTX *mem_ctx,
+ const struct CHALLENGE_MESSAGE *r);
+NTSTATUS ntlmssp_push_AUTHENTICATE_MESSAGE(DATA_BLOB *blob,
+ TALLOC_CTX *mem_ctx,
+ const struct AUTHENTICATE_MESSAGE *r);
diff --git a/auth/ntlmssp/ntlmssp_private.h b/auth/ntlmssp/ntlmssp_private.h
new file mode 100644
index 0000000000..fc74428288
--- /dev/null
+++ b/auth/ntlmssp/ntlmssp_private.h
@@ -0,0 +1,57 @@
+/*
+ * Unix SMB/CIFS implementation.
+ * Version 3.0
+ * NTLMSSP Signing routines
+ * Copyright (C) Andrew Bartlett 2003-2005
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+/* For structures internal to the NTLMSSP implementation that should not be exposed */
+
+#include "../lib/crypto/arcfour.h"
+
+struct ntlmssp_crypt_direction {
+ uint32_t seq_num;
+ uint8_t sign_key[16];
+ struct arcfour_state seal_state;
+};
+
+union ntlmssp_crypt_state {
+ /* NTLM */
+ struct ntlmssp_crypt_direction ntlm;
+
+ /* NTLM2 */
+ struct {
+ struct ntlmssp_crypt_direction sending;
+ struct ntlmssp_crypt_direction receiving;
+ } ntlm2;
+};
+
+/* The following definitions come from auth/ntlmssp.c */
+
+void debug_ntlmssp_flags(uint32_t neg_flags);
+void ntlmssp_handle_neg_flags(struct ntlmssp_state *ntlmssp_state,
+ uint32_t neg_flags, bool allow_lm);
+
+/* The following definitions come from auth/ntlmssp_server.c */
+
+const char *ntlmssp_target_name(struct ntlmssp_state *ntlmssp_state,
+ uint32_t neg_flags, uint32_t *chal_flags);
+NTSTATUS ntlmssp_server_negotiate(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out);
+NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB request, DATA_BLOB *reply);
diff --git a/auth/ntlmssp/ntlmssp_server.c b/auth/ntlmssp/ntlmssp_server.c
new file mode 100644
index 0000000000..b190cf3ab7
--- /dev/null
+++ b/auth/ntlmssp/ntlmssp_server.c
@@ -0,0 +1,582 @@
+/*
+ Unix SMB/Netbios implementation.
+ Version 3.0
+ handle NTLMSSP, server side
+
+ Copyright (C) Andrew Tridgell 2001
+ Copyright (C) Andrew Bartlett 2001-2010
+
+ 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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "auth/ntlmssp/ntlmssp.h"
+#include "auth/ntlmssp/ntlmssp_private.h"
+#include "../librpc/gen_ndr/ndr_ntlmssp.h"
+#include "auth/ntlmssp/ntlmssp_ndr.h"
+#include "../libcli/auth/libcli_auth.h"
+#include "../lib/crypto/crypto.h"
+
+/**
+ * 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.
+ */
+
+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_NEGOTIATE_TARGET_INFO;
+ *chal_flags |= NTLMSSP_REQUEST_TARGET;
+ if (ntlmssp_state->server.is_standalone) {
+ *chal_flags |= NTLMSSP_TARGET_TYPE_SERVER;
+ return ntlmssp_state->server.netbios_name;
+ } else {
+ *chal_flags |= NTLMSSP_TARGET_TYPE_DOMAIN;
+ return ntlmssp_state->server.netbios_domain;
+ };
+ } else {
+ return "";
+ }
+}
+
+/**
+ * Next state function for the Negotiate packet
+ *
+ * @param ntlmssp_state NTLMSSP state
+ * @param out_mem_ctx Memory context for *out
+ * @param in The request, as a DATA_BLOB. reply.data must be NULL
+ * @param out The reply, as an allocated DATA_BLOB, caller to free.
+ * @return Errors or MORE_PROCESSING_REQUIRED if (normal) a reply is required.
+ */
+
+NTSTATUS ntlmssp_server_negotiate(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB request, DATA_BLOB *reply)
+{
+ DATA_BLOB struct_blob;
+ uint32_t neg_flags = 0;
+ uint32_t ntlmssp_command, chal_flags;
+ uint8_t cryptkey[8];
+ const char *target_name;
+ NTSTATUS status;
+
+ /* parse the NTLMSSP packet */
+#if 0
+ file_save("ntlmssp_negotiate.dat", request.data, request.length);
+#endif
+
+ if (request.length) {
+ if ((request.length < 16) || !msrpc_parse(ntlmssp_state, &request, "Cdd",
+ "NTLMSSP",
+ &ntlmssp_command,
+ &neg_flags)) {
+ DEBUG(1, ("ntlmssp_server_negotiate: failed to parse NTLMSSP Negotiate of length %u\n",
+ (unsigned int)request.length));
+ dump_data(2, request.data, request.length);
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ debug_ntlmssp_flags(neg_flags);
+
+ if (DEBUGLEVEL >= 10) {
+ struct NEGOTIATE_MESSAGE *negotiate = talloc(
+ ntlmssp_state, struct NEGOTIATE_MESSAGE);
+ if (negotiate != NULL) {
+ status = ntlmssp_pull_NEGOTIATE_MESSAGE(
+ &request, negotiate, negotiate);
+ if (NT_STATUS_IS_OK(status)) {
+ NDR_PRINT_DEBUG(NEGOTIATE_MESSAGE,
+ negotiate);
+ }
+ TALLOC_FREE(negotiate);
+ }
+ }
+ }
+
+ ntlmssp_handle_neg_flags(ntlmssp_state, neg_flags, ntlmssp_state->allow_lm_key);
+
+ /* Ask our caller what challenge they would like in the packet */
+ status = ntlmssp_state->get_challenge(ntlmssp_state, cryptkey);
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("ntlmssp_server_negotiate: backend doesn't give a challenge: %s\n",
+ nt_errstr(status)));
+ return status;
+ }
+
+ /* 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 creates the 'blob' of names that appears at the end of the packet */
+ if (chal_flags & NTLMSSP_NEGOTIATE_TARGET_INFO)
+ {
+ status = msrpc_gen(ntlmssp_state, &struct_blob, "aaaaa",
+ MsvAvNbDomainName, target_name,
+ MsvAvNbComputerName, ntlmssp_state->server.netbios_name,
+ MsvAvDnsDomainName, ntlmssp_state->server.dns_domain,
+ MsvAvDnsComputerName, ntlmssp_state->server.dns_name,
+ MsvAvEOL, "");
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+ } else {
+ struct_blob = data_blob_null;
+ }
+
+ {
+ /* Marshal the packet in the right format, be it unicode or ASCII */
+ const char *gen_string;
+ DATA_BLOB version_blob = data_blob_null;
+
+ if (chal_flags & NTLMSSP_NEGOTIATE_VERSION) {
+ enum ndr_err_code err;
+ struct ntlmssp_VERSION vers;
+
+ /* "What Windows returns" as a version number. */
+ ZERO_STRUCT(vers);
+ vers.ProductMajorVersion = NTLMSSP_WINDOWS_MAJOR_VERSION_6;
+ vers.ProductMinorVersion = NTLMSSP_WINDOWS_MINOR_VERSION_1;
+ vers.ProductBuild = 0;
+ vers.NTLMRevisionCurrent = NTLMSSP_REVISION_W2K3;
+
+ err = ndr_push_struct_blob(&version_blob,
+ ntlmssp_state,
+ &vers,
+ (ndr_push_flags_fn_t)ndr_push_ntlmssp_VERSION);
+
+ if (!NDR_ERR_CODE_IS_SUCCESS(err)) {
+ data_blob_free(&struct_blob);
+ return NT_STATUS_NO_MEMORY;
+ }
+ }
+
+ if (ntlmssp_state->unicode) {
+ gen_string = "CdUdbddBb";
+ } else {
+ gen_string = "CdAdbddBb";
+ }
+
+ status = msrpc_gen(out_mem_ctx, reply, gen_string,
+ "NTLMSSP",
+ NTLMSSP_CHALLENGE,
+ target_name,
+ chal_flags,
+ cryptkey, 8,
+ 0, 0,
+ struct_blob.data, struct_blob.length,
+ version_blob.data, version_blob.length);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ data_blob_free(&version_blob);
+ data_blob_free(&struct_blob);
+ return status;
+ }
+
+ data_blob_free(&version_blob);
+
+ if (DEBUGLEVEL >= 10) {
+ struct CHALLENGE_MESSAGE *challenge = talloc(
+ ntlmssp_state, struct CHALLENGE_MESSAGE);
+ if (challenge != NULL) {
+ challenge->NegotiateFlags = chal_flags;
+ status = ntlmssp_pull_CHALLENGE_MESSAGE(
+ reply, challenge, challenge);
+ if (NT_STATUS_IS_OK(status)) {
+ NDR_PRINT_DEBUG(CHALLENGE_MESSAGE,
+ challenge);
+ }
+ TALLOC_FREE(challenge);
+ }
+ }
+ }
+
+ data_blob_free(&struct_blob);
+
+ ntlmssp_state->expected_state = NTLMSSP_AUTH;
+
+ return NT_STATUS_MORE_PROCESSING_REQUIRED;
+}
+
+struct ntlmssp_server_auth_state {
+ DATA_BLOB user_session_key;
+ DATA_BLOB lm_session_key;
+ /* internal variables used by KEY_EXCH (client-supplied user session key */
+ DATA_BLOB encrypted_session_key;
+ bool doing_ntlm2;
+ /* internal variables used by NTLM2 */
+ uint8_t session_nonce[16];
+};
+
+/**
+ * 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,
+ struct ntlmssp_server_auth_state *state,
+ const DATA_BLOB request)
+{
+ uint32_t ntlmssp_command, auth_flags;
+ NTSTATUS nt_status;
+
+ uint8_t session_nonce_hash[16];
+
+ const char *parse_string;
+
+#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->session_key);
+ data_blob_free(&ntlmssp_state->lm_resp);
+ data_blob_free(&ntlmssp_state->nt_resp);
+
+ ntlmssp_state->user = NULL;
+ ntlmssp_state->domain = NULL;
+ ntlmssp_state->client.netbios_name = 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,
+ &ntlmssp_state->domain,
+ &ntlmssp_state->user,
+ &ntlmssp_state->client.netbios_name,
+ &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(&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,
+ &ntlmssp_state->domain,
+ &ntlmssp_state->user,
+ &ntlmssp_state->client.netbios_name)) {
+ DEBUG(1, ("ntlmssp_server_auth: failed to parse NTLMSSP (tried both formats):\n"));
+ dump_data(2, request.data, request.length);
+
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ }
+
+ talloc_steal(state, state->encrypted_session_key.data);
+
+ if (auth_flags)
+ ntlmssp_handle_neg_flags(ntlmssp_state, auth_flags, ntlmssp_state->allow_lm_key);
+
+ if (DEBUGLEVEL >= 10) {
+ struct AUTHENTICATE_MESSAGE *authenticate = talloc(
+ ntlmssp_state, struct AUTHENTICATE_MESSAGE);
+ if (authenticate != NULL) {
+ NTSTATUS status;
+ authenticate->NegotiateFlags = auth_flags;
+ status = ntlmssp_pull_AUTHENTICATE_MESSAGE(
+ &request, authenticate, authenticate);
+ if (NT_STATUS_IS_OK(status)) {
+ NDR_PRINT_DEBUG(AUTHENTICATE_MESSAGE,
+ authenticate);
+ }
+ TALLOC_FREE(authenticate);
+ }
+ }
+
+ DEBUG(3,("Got user=[%s] domain=[%s] workstation=[%s] len1=%lu len2=%lu\n",
+ ntlmssp_state->user, ntlmssp_state->domain,
+ ntlmssp_state->client.netbios_name,
+ (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;
+ state->doing_ntlm2 = true;
+
+ memcpy(state->session_nonce, ntlmssp_state->internal_chal.data, 8);
+ memcpy(&state->session_nonce[8], ntlmssp_state->lm_resp.data, 8);
+
+ SMB_ASSERT(ntlmssp_state->internal_chal.data && ntlmssp_state->internal_chal.length == 8);
+
+ MD5Init(&md5_session_nonce_ctx);
+ MD5Update(&md5_session_nonce_ctx, 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 */
+ 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))) {
+ 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,
+ struct ntlmssp_server_auth_state *state)
+{
+ DATA_BLOB user_session_key = state->user_session_key;
+ DATA_BLOB lm_session_key = state->lm_session_key;
+ NTSTATUS nt_status = NT_STATUS_OK;
+ DATA_BLOB session_key = data_blob(NULL, 0);
+
+ dump_data_pw("NT session key:\n", user_session_key.data, user_session_key.length);
+ dump_data_pw("LM first-8:\n", lm_session_key.data, lm_session_key.length);
+
+ /* Handle the different session key derivation for NTLM2 */
+ if (state->doing_ntlm2) {
+ if (user_session_key.data && user_session_key.length == 16) {
+ session_key = data_blob_talloc(ntlmssp_state,
+ NULL, 16);
+ hmac_md5(user_session_key.data, state->session_nonce,
+ sizeof(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;
+ }
+ } 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.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);
+ if (session_key.data == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ 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"));
+ } else {
+ static const uint8_t zeros[24] = {0, };
+ session_key = data_blob_talloc(
+ ntlmssp_state, NULL, 16);
+ if (session_key.data == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ 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;
+ }
+
+ } else if (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.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;
+
+ /* 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 (!state->encrypted_session_key.data
+ || state->encrypted_session_key.length != 16) {
+ DEBUG(1, ("Client-supplied KEY_EXCH session key was of invalid length (%u)!\n",
+ (unsigned)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",
+ (unsigned int)session_key.length));
+ ntlmssp_state->session_key = session_key;
+ talloc_steal(ntlmssp_state, session_key.data);
+ } else {
+ dump_data_pw("KEY_EXCH session key (enc):\n",
+ state->encrypted_session_key.data,
+ state->encrypted_session_key.length);
+ arcfour_crypt(state->encrypted_session_key.data,
+ session_key.data,
+ state->encrypted_session_key.length);
+ ntlmssp_state->session_key = data_blob_talloc(ntlmssp_state,
+ state->encrypted_session_key.data,
+ state->encrypted_session_key.length);
+ dump_data_pw("KEY_EXCH session key:\n",
+ state->encrypted_session_key.data,
+ state->encrypted_session_key.length);
+ }
+ } else {
+ ntlmssp_state->session_key = session_key;
+ talloc_steal(ntlmssp_state, session_key.data);
+ }
+
+ if (ntlmssp_state->session_key.length) {
+ nt_status = ntlmssp_sign_init(ntlmssp_state);
+ }
+
+ ntlmssp_state->expected_state = NTLMSSP_DONE;
+
+ return nt_status;
+}
+
+
+/**
+ * Next state function for the Authenticate packet
+ *
+ * @param gensec_security GENSEC state
+ * @param out_mem_ctx Memory context for *out
+ * @param in The request, as a DATA_BLOB. reply.data must be NULL
+ * @param out The reply, as an allocated DATA_BLOB, caller to free.
+ * @return Errors or NT_STATUS_OK if authentication sucessful
+ */
+
+NTSTATUS ntlmssp_server_auth(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB in, DATA_BLOB *out)
+{
+ struct ntlmssp_server_auth_state *state;
+ NTSTATUS nt_status;
+
+ /* zero the outbound NTLMSSP packet */
+ *out = data_blob_null;
+
+ state = talloc_zero(ntlmssp_state, struct ntlmssp_server_auth_state);
+ if (state == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ nt_status = ntlmssp_server_preauth(ntlmssp_state, state, in);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ TALLOC_FREE(state);
+ 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 */
+ nt_status = ntlmssp_state->check_password(ntlmssp_state,
+ state,
+ &state->user_session_key,
+ &state->lm_session_key);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ TALLOC_FREE(state);
+ return nt_status;
+ }
+
+ /* When we get more async in the auth code behind
+ ntlmssp_state->check_password, the ntlmssp_server_postpath
+ can be done in a callback */
+
+ nt_status = ntlmssp_server_postauth(ntlmssp_state, state);
+ TALLOC_FREE(state);
+ return nt_status;
+}
diff --git a/auth/ntlmssp/ntlmssp_sign.c b/auth/ntlmssp/ntlmssp_sign.c
new file mode 100644
index 0000000000..019ea3ce3b
--- /dev/null
+++ b/auth/ntlmssp/ntlmssp_sign.c
@@ -0,0 +1,694 @@
+/*
+ * Unix SMB/CIFS implementation.
+ * Version 3.0
+ * NTLMSSP Signing routines
+ * Copyright (C) Andrew Bartlett 2003-2005
+ *
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "includes.h"
+#include "../auth/ntlmssp/ntlmssp.h"
+#include "../libcli/auth/libcli_auth.h"
+#include "../lib/crypto/md5.h"
+#include "../lib/crypto/hmacmd5.h"
+#include "../lib/crypto/crc32.h"
+#include "../auth/ntlmssp/ntlmssp_private.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 the NTLM2 code:
+ *
+ * NTLM2 is a AEAD system. This means that the data encrypted is not
+ * all the data that is signed. In DCE-RPC case, the headers of the
+ * DCE-RPC packets are also signed. This prevents some of the
+ * fun-and-games one might have by changing them.
+ *
+ */
+
+static void dump_arc4_state(const char *description,
+ struct arcfour_state *state)
+{
+ dump_data_pw(description, state->sbox, sizeof(state->sbox));
+}
+
+static void calc_ntlmv2_key(uint8_t subkey[16],
+ DATA_BLOB session_key,
+ const char *constant)
+{
+ struct MD5Context ctx3;
+ MD5Init(&ctx3);
+ MD5Update(&ctx3, session_key.data, session_key.length);
+ MD5Update(&ctx3, (const uint8_t *)constant, strlen(constant)+1);
+ MD5Final(subkey, &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:
+ DEBUG(100,("ntlmssp_make_packet_signature: SEND seq = %u, len = %u, pdu_len = %u\n",
+ ntlmssp_state->crypt->ntlm2.sending.seq_num,
+ (unsigned int)length,
+ (unsigned int)pdu_length));
+
+ SIVAL(seq_num, 0, ntlmssp_state->crypt->ntlm2.sending.seq_num);
+ ntlmssp_state->crypt->ntlm2.sending.seq_num++;
+ hmac_md5_init_limK_to_64(ntlmssp_state->crypt->ntlm2.sending.sign_key, 16, &ctx);
+ break;
+ case NTLMSSP_RECEIVE:
+
+ DEBUG(100,("ntlmssp_make_packet_signature: RECV seq = %u, len = %u, pdu_len = %u\n",
+ ntlmssp_state->crypt->ntlm2.receiving.seq_num,
+ (unsigned int)length,
+ (unsigned int)pdu_length));
+
+ SIVAL(seq_num, 0, ntlmssp_state->crypt->ntlm2.receiving.seq_num);
+ ntlmssp_state->crypt->ntlm2.receiving.seq_num++;
+ hmac_md5_init_limK_to_64(ntlmssp_state->crypt->ntlm2.receiving.sign_key, 16, &ctx);
+ break;
+ }
+
+ dump_data_pw("pdu data ", whole_pdu, pdu_length);
+
+ 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->crypt->ntlm2.sending.seal_state,
+ digest, 8);
+ break;
+ case NTLMSSP_RECEIVE:
+ arcfour_crypt_sbox(&ntlmssp_state->crypt->ntlm2.receiving.seal_state,
+ digest, 8);
+ break;
+ }
+ }
+
+ SIVAL(sig->data, 0, NTLMSSP_SIGN_VERSION);
+ memcpy(sig->data + 4, digest, 8);
+ memcpy(sig->data + 12, seq_num, 4);
+
+ dump_data_pw("ntlmssp v2 sig ", sig->data, sig->length);
+
+ } else {
+ NTSTATUS status;
+ uint32_t crc;
+
+ crc = crc32_calc_buffer(data, length);
+
+ status = msrpc_gen(sig_mem_ctx,
+ sig, "dddd",
+ NTLMSSP_SIGN_VERSION, 0, crc,
+ ntlmssp_state->crypt->ntlm.seq_num);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ ntlmssp_state->crypt->ntlm.seq_num++;
+
+ dump_arc4_state("ntlmssp hash: \n",
+ &ntlmssp_state->crypt->ntlm.seal_state);
+ arcfour_crypt_sbox(&ntlmssp_state->crypt->ntlm.seal_state,
+ sig->data+4, sig->length-4);
+ }
+ 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)
+{
+ NTSTATUS nt_status;
+
+ if (!(ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN)) {
+ DEBUG(3, ("NTLMSSP Signing not negotiated - cannot sign packet!\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (!ntlmssp_state->session_key.length) {
+ DEBUG(3, ("NO session key, cannot check sign packet\n"));
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+
+ nt_status = ntlmssp_make_packet_signature(ntlmssp_state,
+ sig_mem_ctx,
+ data, length,
+ whole_pdu, pdu_length,
+ NTLMSSP_SEND, sig, true);
+
+ return nt_status;
+}
+
+/**
+ * Check the signature of an incoming packet
+ * @note caller *must* check that the signature is the size it expects
+ *
+ */
+
+NTSTATUS ntlmssp_check_packet(struct ntlmssp_state *ntlmssp_state,
+ 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;
+ TALLOC_CTX *tmp_ctx;
+
+ 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));
+ }
+
+ tmp_ctx = talloc_new(ntlmssp_state);
+ if (!tmp_ctx) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ nt_status = ntlmssp_make_packet_signature(ntlmssp_state,
+ tmp_ctx,
+ data, length,
+ whole_pdu, pdu_length,
+ NTLMSSP_RECEIVE,
+ &local_sig, true);
+
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(0,("NTLMSSP packet sig creation failed with %s\n",
+ nt_errstr(nt_status)));
+ talloc_free(tmp_ctx);
+ 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"));
+ talloc_free(tmp_ctx);
+ 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"));
+ talloc_free(tmp_ctx);
+ return NT_STATUS_ACCESS_DENIED;
+ }
+ }
+ dump_data_pw("checked ntlmssp signature\n", sig->data, sig->length);
+ DEBUG(10,("ntlmssp_check_packet: NTLMSSP signature OK !\n"));
+
+ talloc_free(tmp_ctx);
+ 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)
+{
+ if (!(ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL)) {
+ DEBUG(3, ("NTLMSSP Sealing not negotiated - cannot seal packet!\n"));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ if (!ntlmssp_state->session_key.length) {
+ DEBUG(3, ("NO session key, cannot seal packet\n"));
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+
+ DEBUG(10,("ntlmssp_seal_data: seal\n"));
+ dump_data_pw("ntlmssp clear data\n", data, length);
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
+ NTSTATUS nt_status;
+ /*
+ * The order of these two operations matters - we
+ * must first seal the packet, then seal the
+ * sequence number - this is because 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);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ return nt_status;
+ }
+
+ arcfour_crypt_sbox(&ntlmssp_state->crypt->ntlm2.sending.seal_state,
+ data, length);
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_KEY_EXCH) {
+ arcfour_crypt_sbox(&ntlmssp_state->crypt->ntlm2.sending.seal_state,
+ sig->data+4, 8);
+ }
+ } else {
+ NTSTATUS status;
+ uint32_t crc;
+
+ crc = crc32_calc_buffer(data, length);
+
+ status = msrpc_gen(sig_mem_ctx,
+ sig, "dddd",
+ NTLMSSP_SIGN_VERSION, 0, crc,
+ ntlmssp_state->crypt->ntlm.seq_num);
+ if (!NT_STATUS_IS_OK(status)) {
+ return status;
+ }
+
+ /*
+ * The order of these two operations matters - we
+ * must first seal the packet, then seal the
+ * sequence number - this is because the ntlmv1_arc4_state
+ * is not constant, but is is rather updated with
+ * each iteration
+ */
+
+ dump_arc4_state("ntlmv1 arc4 state:\n",
+ &ntlmssp_state->crypt->ntlm.seal_state);
+ arcfour_crypt_sbox(&ntlmssp_state->crypt->ntlm.seal_state,
+ data, length);
+
+ dump_arc4_state("ntlmv1 arc4 state:\n",
+ &ntlmssp_state->crypt->ntlm.seal_state);
+
+ arcfour_crypt_sbox(&ntlmssp_state->crypt->ntlm.seal_state,
+ sig->data+4, sig->length-4);
+
+ ntlmssp_state->crypt->ntlm.seq_num++;
+ }
+ dump_data_pw("ntlmssp signature\n", sig->data, sig->length);
+ dump_data_pw("ntlmssp sealed data\n", data, length);
+
+ return NT_STATUS_OK;
+}
+
+/**
+ * Unseal data with the NTLMSSP algorithm
+ *
+ */
+
+NTSTATUS ntlmssp_unseal_packet(struct ntlmssp_state *ntlmssp_state,
+ uint8_t *data, size_t length,
+ const uint8_t *whole_pdu, size_t pdu_length,
+ const DATA_BLOB *sig)
+{
+ NTSTATUS status;
+ if (!ntlmssp_state->session_key.length) {
+ DEBUG(3, ("NO session key, cannot unseal packet\n"));
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+
+ DEBUG(10,("ntlmssp_unseal_packet: seal\n"));
+ dump_data_pw("ntlmssp sealed data\n", data, length);
+
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
+ /* First unseal the data. */
+ arcfour_crypt_sbox(&ntlmssp_state->crypt->ntlm2.receiving.seal_state,
+ data, length);
+ dump_data_pw("ntlmv2 clear data\n", data, length);
+ } else {
+ arcfour_crypt_sbox(&ntlmssp_state->crypt->ntlm.seal_state,
+ data, length);
+ dump_data_pw("ntlmv1 clear data\n", data, length);
+ }
+ status = ntlmssp_check_packet(ntlmssp_state,
+ data, length,
+ whole_pdu, pdu_length,
+ sig);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1,("NTLMSSP packet check for unseal failed due to invalid signature on %llu bytes of input:\n",
+ (unsigned long long)length));
+ }
+ return status;
+}
+
+NTSTATUS ntlmssp_wrap(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out)
+{
+ NTSTATUS nt_status;
+ DATA_BLOB sig;
+
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
+ *out = data_blob_talloc(out_mem_ctx, NULL, in->length + NTLMSSP_SIG_SIZE);
+ if (!out->data) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ memcpy(out->data + NTLMSSP_SIG_SIZE, in->data, in->length);
+
+ nt_status = ntlmssp_seal_packet(ntlmssp_state, out_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);
+ talloc_free(sig.data);
+ }
+ return nt_status;
+
+ } else if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN) {
+
+ *out = data_blob_talloc(out_mem_ctx, NULL, in->length + NTLMSSP_SIG_SIZE);
+ if (!out->data) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ memcpy(out->data + NTLMSSP_SIG_SIZE, in->data, in->length);
+
+ nt_status = ntlmssp_sign_packet(ntlmssp_state, out_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);
+ talloc_free(sig.data);
+ }
+ return nt_status;
+ } else {
+ *out = data_blob_talloc(out_mem_ctx, in->data, in->length);
+ if (!out->data) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ return NT_STATUS_OK;
+ }
+}
+
+NTSTATUS ntlmssp_unwrap(struct ntlmssp_state *ntlmssp_state,
+ TALLOC_CTX *out_mem_ctx,
+ const DATA_BLOB *in,
+ DATA_BLOB *out)
+{
+ DATA_BLOB sig;
+
+ if (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(out_mem_ctx, in->data + NTLMSSP_SIG_SIZE, in->length - NTLMSSP_SIG_SIZE);
+
+ return ntlmssp_unseal_packet(ntlmssp_state,
+ out->data, out->length,
+ out->data, out->length,
+ &sig);
+
+ } else if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN) {
+ NTSTATUS status;
+ struct ntlmssp_crypt_direction save_direction;
+
+ if (in->length < NTLMSSP_SIG_SIZE) {
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+ sig.data = in->data;
+ sig.length = NTLMSSP_SIG_SIZE;
+ *out = data_blob_talloc(out_mem_ctx, in->data + NTLMSSP_SIG_SIZE, in->length - NTLMSSP_SIG_SIZE);
+
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
+ save_direction = ntlmssp_state->crypt->ntlm2.receiving;
+ } else {
+ save_direction = ntlmssp_state->crypt->ntlm;
+ }
+
+ status = ntlmssp_check_packet(ntlmssp_state,
+ out->data, out->length,
+ out->data, out->length,
+ &sig);
+ if (!NT_STATUS_IS_OK(status)) {
+ NTSTATUS check_status = status;
+ /*
+ * The Windows LDAP libraries seems to have a bug
+ * and always use sealing even if only signing was
+ * negotiated. So we need to fallback.
+ */
+
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_NTLM2) {
+ ntlmssp_state->crypt->ntlm2.receiving = save_direction;
+ } else {
+ ntlmssp_state->crypt->ntlm = save_direction;
+ }
+
+ status = ntlmssp_unseal_packet(ntlmssp_state,
+ out->data,
+ out->length,
+ out->data,
+ out->length,
+ &sig);
+ if (NT_STATUS_IS_OK(status)) {
+ ntlmssp_state->neg_flags |= NTLMSSP_NEGOTIATE_SEAL;
+ } else {
+ status = check_status;
+ }
+ }
+
+ if (!NT_STATUS_IS_OK(status)) {
+ DEBUG(1, ("NTLMSSP packet check for unwrap failed due to invalid signature\n"));
+ }
+ return status;
+ } else {
+ *out = data_blob_talloc(out_mem_ctx, in->data, in->length);
+ if (!out->data) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ return NT_STATUS_OK;
+ }
+}
+
+/**
+ Initialise the state for NTLMSSP signing.
+*/
+NTSTATUS ntlmssp_sign_init(struct ntlmssp_state *ntlmssp_state)
+{
+ DEBUG(3, ("NTLMSSP Sign/Seal - Initialising with flags:\n"));
+ debug_ntlmssp_flags(ntlmssp_state->neg_flags);
+
+ if (ntlmssp_state->session_key.length < 8) {
+ DEBUG(3, ("NO session key, cannot intialise signing\n"));
+ return NT_STATUS_NO_USER_SESSION_KEY;
+ }
+
+ ntlmssp_state->crypt = talloc_zero(ntlmssp_state,
+ union ntlmssp_crypt_state);
+ if (ntlmssp_state->crypt == NULL) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ 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;
+ uint8_t send_seal_key[16];
+ DATA_BLOB send_seal_blob = data_blob_const(send_seal_key,
+ sizeof(send_seal_key));
+ uint8_t recv_seal_key[16];
+ DATA_BLOB recv_seal_blob = data_blob_const(recv_seal_key,
+ sizeof(recv_seal_key));
+
+ 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.
+ *
+ * Key weakening was not performed on the master key
+ * for NTLM2, but must be done on the encryption subkeys only.
+ */
+
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_128) {
+ /* nothing to do */
+ } else if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_56) {
+ weak_session_key.length = 7;
+ } 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: sign key */
+ calc_ntlmv2_key(ntlmssp_state->crypt->ntlm2.sending.sign_key,
+ ntlmssp_state->session_key, send_sign_const);
+ dump_data_pw("NTLMSSP send sign key:\n",
+ ntlmssp_state->crypt->ntlm2.sending.sign_key, 16);
+
+ /* SEND: seal ARCFOUR pad */
+ calc_ntlmv2_key(send_seal_key,
+ weak_session_key, send_seal_const);
+ dump_data_pw("NTLMSSP send seal key:\n", send_seal_key, 16);
+
+ arcfour_init(&ntlmssp_state->crypt->ntlm2.sending.seal_state,
+ &send_seal_blob);
+
+ dump_arc4_state("NTLMSSP send seal arc4 state:\n",
+ &ntlmssp_state->crypt->ntlm2.sending.seal_state);
+
+ /* SEND: seq num */
+ ntlmssp_state->crypt->ntlm2.sending.seq_num = 0;
+
+ /* RECV: sign key */
+ calc_ntlmv2_key(ntlmssp_state->crypt->ntlm2.receiving.sign_key,
+ ntlmssp_state->session_key, recv_sign_const);
+ dump_data_pw("NTLMSSP recv sign key:\n",
+ ntlmssp_state->crypt->ntlm2.receiving.sign_key, 16);
+
+ /* RECV: seal ARCFOUR pad */
+ calc_ntlmv2_key(recv_seal_key,
+ weak_session_key, recv_seal_const);
+ dump_data_pw("NTLMSSP recv seal key:\n", recv_seal_key, 16);
+
+ arcfour_init(&ntlmssp_state->crypt->ntlm2.receiving.seal_state,
+ &recv_seal_blob);
+
+ dump_arc4_state("NTLMSSP recv seal arc4 state:\n",
+ &ntlmssp_state->crypt->ntlm2.receiving.seal_state);
+
+ /* RECV: seq num */
+ ntlmssp_state->crypt->ntlm2.receiving.seq_num = 0;
+ } else {
+ uint8_t weak_session_key[8];
+ DATA_BLOB seal_session_key = ntlmssp_state->session_key;
+ bool do_weak = false;
+
+ DEBUG(5, ("NTLMSSP Sign/Seal - using NTLM1\n"));
+
+ /*
+ * 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) {
+ do_weak = true;
+ }
+
+ /*
+ * Nothing to weaken.
+ * We certainly don't want to 'extend' the length...
+ */
+ if (seal_session_key.length < 16) {
+ /* TODO: is this really correct? */
+ do_weak = false;
+ }
+
+ if (do_weak) {
+ memcpy(weak_session_key, seal_session_key.data, 8);
+ seal_session_key = data_blob_const(weak_session_key, 8);
+
+ /*
+ * LM key doesn't support 128 bit crypto, so this is
+ * the best we can do. If you negotiate 128 bit, but
+ * not 56, you end up with 40 bit...
+ */
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_56) {
+ weak_session_key[7] = 0xa0;
+ } else { /* forty bits */
+ weak_session_key[5] = 0xe5;
+ weak_session_key[6] = 0x38;
+ weak_session_key[7] = 0xb0;
+ }
+ }
+
+ arcfour_init(&ntlmssp_state->crypt->ntlm.seal_state,
+ &seal_session_key);
+
+ dump_arc4_state("NTLMv1 arc4 state:\n",
+ &ntlmssp_state->crypt->ntlm.seal_state);
+
+ ntlmssp_state->crypt->ntlm.seq_num = 0;
+ }
+
+ return NT_STATUS_OK;
+}
diff --git a/auth/ntlmssp/wscript_build b/auth/ntlmssp/wscript_build
new file mode 100644
index 0000000000..16c31ac15a
--- /dev/null
+++ b/auth/ntlmssp/wscript_build
@@ -0,0 +1,3 @@
+bld.SAMBA_SUBSYSTEM('NTLMSSP_COMMON',
+ source='gensec_ntlmssp.c ntlmssp.c ntlmssp_ndr.c ntlmssp_server.c ntlmssp_sign.c',
+ deps='samba-util NDR_NTLMSSP MSRPC_PARSE NTLM_CHECK')
generated by cgit (git 2.34.1) at 2024-11-03 18:41:33 +0000