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authorStefan Metzmacher <metze@samba.org>2005-03-01 15:19:18 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 13:10:55 -0500
commit70f7c56168056c025c6931ce6e934203a5c2c9dc (patch)
tree817246e53c8c9e37b2cf0d02d37cd79e294c5af4 /source4/libcli
parent56d20302aa0320e8aec92204cfb580839534f469 (diff)
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r5601: add a gsskrb5 backend that uses lorikeet-heimdal's new gssapi with
GSS_C_DCE_STYLE support, it's just a start and does work correctly yet metze (This used to be commit 87ff661703f467db3dfcb33084041c3e2951e0ee)
Diffstat (limited to 'source4/libcli')
-rw-r--r--source4/libcli/auth/gensec.m44
-rw-r--r--source4/libcli/auth/gensec.mk10
-rw-r--r--source4/libcli/auth/gensec_gsskrb5.c584
3 files changed, 598 insertions, 0 deletions
diff --git a/source4/libcli/auth/gensec.m4 b/source4/libcli/auth/gensec.m4
index 356f857d81..6ccf45ad7e 100644
--- a/source4/libcli/auth/gensec.m4
+++ b/source4/libcli/auth/gensec.m4
@@ -1,8 +1,12 @@
SMB_MODULE_DEFAULT(gensec_krb5, NOT)
SMB_MODULE_DEFAULT(gensec_gssapi, NOT)
+SMB_MODULE_DEFAULT(gensec_gsskrb5, NOT)
if test x"$SMB_EXT_LIB_ENABLE_KRB5" = x"YES"; then
# enable this when krb5 is fully working
SMB_MODULE_DEFAULT(gensec_krb5, STATIC)
SMB_MODULE_DEFAULT(gensec_gssapi, STATIC)
+ if test x"$samba_cv_GSS_C_DCE_STYLE" = x"yes"; then
+ SMB_MODULE_DEFAULT(gensec_gsskrb5, STATIC)
+ fi
fi
diff --git a/source4/libcli/auth/gensec.mk b/source4/libcli/auth/gensec.mk
index b66006ce4f..e4559bb972 100644
--- a/source4/libcli/auth/gensec.mk
+++ b/source4/libcli/auth/gensec.mk
@@ -34,6 +34,16 @@ REQUIRED_SUBSYSTEMS = EXT_LIB_KRB5
################################################
################################################
+# Start MODULE gensec_gsskrb5
+[MODULE::gensec_gsskrb5]
+SUBSYSTEM = GENSEC
+INIT_FUNCTION = gensec_gsskrb5_init
+INIT_OBJ_FILES = libcli/auth/gensec_gsskrb5.o
+REQUIRED_SUBSYSTEMS = EXT_LIB_KRB5
+# End MODULE gensec_gsskrb5
+################################################
+
+################################################
# Start MODULE gensec_spnego
[MODULE::gensec_spnego]
SUBSYSTEM = GENSEC
diff --git a/source4/libcli/auth/gensec_gsskrb5.c b/source4/libcli/auth/gensec_gsskrb5.c
new file mode 100644
index 0000000000..77e077276b
--- /dev/null
+++ b/source4/libcli/auth/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;
+}