/*
- * Copyright (c) 2010 PADL Software Pty Ltd.
+ * Copyright (c) 2010, JANET(UK)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
- * 3. Redistributions in any form must be accompanied by information on
- * how to obtain complete source code for the GS2 software and any
- * accompanying software that uses the GS2 software. The source code
- * must either be included in the distribution or be available for no
- * more than the cost of distribution plus a nominal fee, and must be
- * freely redistributable under reasonable conditions. For an
- * executable file, complete source code means the source code for all
- * modules it contains. It does not include source code for modules or
- * files that typically accompany the major components of the operating
- * system on which the executable file runs.
+ * 3. Neither the name of JANET(UK) nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
*
- * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE ``AS IS'' AND ANY EXPRESS
- * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
- * NON-INFRINGEMENT, ARE DISCLAIMED. IN NO EVENT SHALL PADL SOFTWARE
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
*/
/*
* Copyright (c) 1998-2003 Carnegie Mellon University.
#include <config.h>
#include <gssapi/gssapi.h>
+#ifdef HAVE_GSSAPI_GSSAPI_EXT_H
#include <gssapi/gssapi_ext.h>
+#endif
#include <fcntl.h>
#include <stdio.h>
#include <sasl.h>
static gss_OID_set gs2_mechs = GSS_C_NO_OID_SET;
-static int gs2_ask_user_info(context_t *context,
- sasl_client_params_t *params,
- char **realms, int nrealm,
- sasl_interact_t **prompt_need,
- sasl_out_params_t *oparams);
+static int gs2_get_init_creds(context_t *context,
+ sasl_client_params_t *params,
+ sasl_interact_t **prompt_need,
+ sasl_out_params_t *oparams);
static int gs2_verify_initial_message(context_t *text,
sasl_server_params_t *sparams,
context_t *ret;
ret = utils->malloc(sizeof(context_t));
- if (!ret)
+ if (ret == NULL)
return NULL;
memset(ret, 0, sizeof(context_t));
return SASL_NOMECH;
}
- plugs = utils->malloc(2 * gs2_mechs->count * plugsize);
+ plugs = utils->malloc(gs2_mechs->count * plugsize);
if (plugs == NULL) {
MEMERROR(utils);
return SASL_NOMEM;
}
- memset(plugs, 0, 2 * gs2_mechs->count * plugsize);
+ memset(plugs, 0, gs2_mechs->count * plugsize);
for (i = 0; i < gs2_mechs->count; i++) {
gss_buffer_desc sasl_mech_name = GSS_C_EMPTY_BUFFER;
*clientoutlen = 0;
if (text->gss_ctx == GSS_C_NO_CONTEXT) {
- ret = gs2_ask_user_info(text, params, NULL, 0, prompt_need, oparams);
+ ret = gs2_get_init_creds(text, params, prompt_need, oparams);
if (ret != SASL_OK)
goto cleanup;
- if (params->gss_creds == GSS_C_NO_CREDENTIAL &&
- text->password != NULL && text->password->len != 0) {
- gss_buffer_desc password_buf;
- gss_buffer_desc name_buf;
- gss_OID_set_desc mechs;
-
- name_buf.length = strlen(oparams->authid);
- name_buf.value = (void *)oparams->authid;
-
- password_buf.length = text->password->len;
- password_buf.value = text->password->data;
-
- mechs.count = 1;
- mechs.elements = (gss_OID)text->mechanism;
-
- maj_stat = gss_import_name(&min_stat,
- &name_buf,
- GSS_C_NT_USER_NAME,
- &text->client_name);
- if (GSS_ERROR(maj_stat))
- goto cleanup;
-
- maj_stat = gss_acquire_cred_with_password(&min_stat,
- text->client_name,
- &password_buf,
- GSS_C_INDEFINITE,
- &mechs,
- GSS_C_INITIATE,
- &text->client_creds,
- NULL,
- &text->lifetime);
- if (GSS_ERROR(maj_stat))
- goto cleanup;
- }
-
initialContextToken = 1;
} else
initialContextToken = 0;
snprintf(name_buf.value, name_buf.length + 1,
"%s@%s", params->service, params->serverFQDN);
- maj_stat = gss_import_name (&min_stat,
- &name_buf,
- GSS_C_NT_HOSTBASED_SERVICE,
- &text->server_name);
+ maj_stat = gss_import_name(&min_stat,
+ &name_buf,
+ GSS_C_NT_HOSTBASED_SERVICE,
+ &text->server_name);
params->utils->free(name_buf.value);
name_buf.value = NULL;
return SASL_OK;
}
+#define GOT_CREDS(text, params) ((text)->client_creds != NULL || (params)->gss_creds != NULL)
+#define CRED_ERROR(status) ((status) == GSS_S_CRED_UNAVAIL || (status) == GSS_S_NO_CRED)
+
+/*
+ * Determine the authentication identity from the application supplied
+ * GSS credential, the application supplied identity, and the default
+ * GSS credential, in that order. Then, acquire credentials.
+ */
static int
-gs2_ask_user_info(context_t *text,
- sasl_client_params_t *params,
- char **realms __attribute__((unused)),
- int nrealm __attribute__((unused)),
- sasl_interact_t **prompt_need,
- sasl_out_params_t *oparams)
+gs2_get_init_creds(context_t *text,
+ sasl_client_params_t *params,
+ sasl_interact_t **prompt_need,
+ sasl_out_params_t *oparams)
{
int result = SASL_OK;
const char *authid = NULL, *userid = NULL;
int user_result = SASL_OK;
int auth_result = SASL_OK;
int pass_result = SASL_OK;
+ OM_uint32 maj_stat = GSS_S_COMPLETE, min_stat = 0;
+ gss_OID_set_desc mechs;
+ gss_buffer_desc cred_authid = GSS_C_EMPTY_BUFFER;
+ gss_buffer_desc name_buf = GSS_C_EMPTY_BUFFER;
+
+ mechs.count = 1;
+ mechs.elements = (gss_OID)text->mechanism;
- /* try to get the authid */
+ /*
+ * Get the authentication identity from the application.
+ */
if (oparams->authid == NULL) {
auth_result = _plug_get_authid(params->utils, &authid, prompt_need);
-
if (auth_result != SASL_OK && auth_result != SASL_INTERACT) {
- return auth_result;
+ result = auth_result;
+ goto cleanup;
}
}
- /* try to get the userid */
+ /*
+ * Get the authorization identity from the application.
+ */
if (oparams->user == NULL) {
user_result = _plug_get_userid(params->utils, &userid, prompt_need);
-
if (user_result != SASL_OK && user_result != SASL_INTERACT) {
- return user_result;
+ result = user_result;
+ goto cleanup;
}
}
- /* try to get the password */
- if (text->password == NULL) {
- pass_result = _plug_get_password(params->utils, &text->password,
- &text->free_password, prompt_need);
- if (pass_result != SASL_OK && pass_result != SASL_INTERACT) {
- return pass_result;
+ /*
+ * Canonicalize the authentication and authorization identities before
+ * calling GSS_Import_name.
+ */
+ if (auth_result == SASL_OK && user_result == SASL_OK &&
+ oparams->authid == NULL) {
+ if (userid == NULL || userid[0] == '\0') {
+ result = params->canon_user(params->utils->conn, authid, 0,
+ SASL_CU_AUTHID | SASL_CU_AUTHZID,
+ oparams);
+ } else {
+ result = params->canon_user(params->utils->conn,
+ authid, 0, SASL_CU_AUTHID, oparams);
+ if (result != SASL_OK)
+ goto cleanup;
+
+ result = params->canon_user(params->utils->conn,
+ userid, 0, SASL_CU_AUTHZID, oparams);
+ if (result != SASL_OK)
+ goto cleanup;
+ }
+
+ if (oparams->authid != NULL) {
+ name_buf.length = strlen(oparams->authid);
+ name_buf.value = (void *)oparams->authid;
+
+ assert(text->client_name == GSS_C_NO_NAME);
+
+ maj_stat = gss_import_name(&min_stat,
+ &name_buf,
+ GSS_C_NT_USER_NAME,
+ &text->client_name);
+ if (GSS_ERROR(maj_stat))
+ goto cleanup;
}
}
+ /*
+ * If application didn't provide an authid, then use the default
+ * credential. If that doesn't work, give up.
+ */
+ if (!GOT_CREDS(text, params) && oparams->authid == NULL) {
+ maj_stat = gss_acquire_cred(&min_stat,
+ GSS_C_NO_NAME,
+ GSS_C_INDEFINITE,
+ &mechs,
+ GSS_C_INITIATE,
+ &text->client_creds,
+ NULL,
+ &text->lifetime);
+ if (GSS_ERROR(maj_stat))
+ goto cleanup;
+
+ assert(text->client_name == GSS_C_NO_NAME);
+
+ maj_stat = gss_inquire_cred(&min_stat,
+ params->gss_creds
+ ? (gss_cred_id_t)params->gss_creds
+ : text->client_creds,
+ &text->client_name,
+ NULL,
+ NULL,
+ NULL);
+ if (GSS_ERROR(maj_stat))
+ goto cleanup;
+
+ maj_stat = gss_display_name(&min_stat,
+ text->client_name,
+ &cred_authid,
+ NULL);
+ if (GSS_ERROR(maj_stat))
+ goto cleanup;
+
+ if (userid == NULL || userid[0] == '\0') {
+ result = params->canon_user(params->utils->conn,
+ cred_authid.value, cred_authid.length,
+ SASL_CU_AUTHID | SASL_CU_AUTHZID,
+ oparams);
+ } else {
+ result = params->canon_user(params->utils->conn,
+ cred_authid.value, cred_authid.length,
+ SASL_CU_AUTHID, oparams);
+ if (result != SASL_OK)
+ goto cleanup;
+
+ result = params->canon_user(params->utils->conn,
+ cred_authid.value, cred_authid.length,
+ SASL_CU_AUTHZID, oparams);
+ if (result != SASL_OK)
+ goto cleanup;
+ }
+ }
+
+ /*
+ * Armed with the authentication identity, try to get a credential without
+ * a password.
+ */
+ if (!GOT_CREDS(text, params) && text->client_name != GSS_C_NO_NAME) {
+ maj_stat = gss_acquire_cred(&min_stat,
+ text->client_name,
+ GSS_C_INDEFINITE,
+ &mechs,
+ GSS_C_INITIATE,
+ &text->client_creds,
+ NULL,
+ &text->lifetime);
+ if (GSS_ERROR(maj_stat) && !CRED_ERROR(maj_stat))
+ goto cleanup;
+ }
+
+ /*
+ * If that failed, try to get a credential with a password.
+ */
+ if (!GOT_CREDS(text, params)) {
+ if (text->password == NULL) {
+ pass_result = _plug_get_password(params->utils, &text->password,
+ &text->free_password, prompt_need);
+ if (pass_result != SASL_OK && pass_result != SASL_INTERACT) {
+ result = pass_result;
+ goto cleanup;
+ }
+ }
+
+ if (text->password != NULL) {
+ gss_buffer_desc password_buf;
+
+ password_buf.length = text->password->len;
+ password_buf.value = text->password->data;
+
+ maj_stat = gss_acquire_cred_with_password(&min_stat,
+ text->client_name,
+ &password_buf,
+ GSS_C_INDEFINITE,
+ &mechs,
+ GSS_C_INITIATE,
+ &text->client_creds,
+ NULL,
+ &text->lifetime);
+ if (GSS_ERROR(maj_stat))
+ goto cleanup;
+ }
+ }
+
+ maj_stat = GSS_S_COMPLETE;
+
/* free prompts we got */
if (prompt_need && *prompt_need) {
params->utils->free(*prompt_need);
/* if there are prompts not filled in */
if (user_result == SASL_INTERACT || auth_result == SASL_INTERACT ||
pass_result == SASL_INTERACT) {
-
/* make the prompt list */
result =
_plug_make_prompts(params->utils, prompt_need,
NULL, NULL, NULL,
NULL,
NULL, NULL);
- if (result == SASL_OK) return SASL_INTERACT;
-
- return result;
+ if (result == SASL_OK)
+ result = SASL_INTERACT;
}
- if (oparams->authid == NULL) {
- if (userid == NULL || userid[0] == '\0') {
- result = params->canon_user(params->utils->conn, authid, 0,
- SASL_CU_AUTHID | SASL_CU_AUTHZID,
- oparams);
- } else {
- result = params->canon_user(params->utils->conn,
- authid, 0, SASL_CU_AUTHID, oparams);
- if (result != SASL_OK) return result;
-
- result = params->canon_user(params->utils->conn,
- userid, 0, SASL_CU_AUTHZID, oparams);
- }
- if (result != SASL_OK)
- return result;
+cleanup:
+ if (result == SASL_OK && maj_stat != GSS_S_COMPLETE) {
+ sasl_gs2_seterror(text->utils, maj_stat, min_stat);
+ result = SASL_FAIL;
}
+ gss_release_buffer(&min_stat, &cred_authid);
+
return result;
}
int ret;
char *out = NULL;
unsigned int len, curlen = 0;
- const char prefix[] = "GSSAPI Error: ";
+ const char prefix[] = "GS2 Error: ";
len = sizeof(prefix);
ret = _plug_buf_alloc(utils, &out, &curlen, 256);
projects / cyrus-sasl.git / blobdiff