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,
static int gs2_get_mech_attrs(const sasl_utils_t *utils,
const gss_OID mech,
unsigned int *security_flags,
- unsigned int *features);
+ unsigned int *features,
+ const unsigned long **prompts);
static int gs2_indicate_mechs(const sasl_utils_t *utils);
text->authzid = NULL;
}
- if (text->mechanism != NULL) {
- gss_release_oid(&min_stat, &text->mechanism);
- text->mechanism = GSS_C_NO_OID;
- }
-
gss_release_buffer(&min_stat, &text->gss_cbindings.application_data);
if (text->out_buf != NULL) {
gss_buffer_desc short_name_buf = GSS_C_EMPTY_BUFFER;
gss_name_t without = GSS_C_NO_NAME;
gss_OID_set_desc mechs;
- gss_OID actual_mech = GSS_C_NO_OID;
OM_uint32 out_flags = 0;
int ret = 0, equal = 0;
int initialContextToken = (text->gss_ctx == GSS_C_NO_CONTEXT);
&input_token,
&text->gss_cbindings,
&text->client_name,
- &actual_mech,
+ NULL,
&output_token,
&out_flags,
&text->lifetime,
sasl_gs2_log(text->utils, maj_stat, min_stat);
text->utils->seterror(text->utils->conn, SASL_NOLOG,
"GS2 Failure: gss_accept_sec_context");
- ret = SASL_BADAUTH;
+ ret = (maj_stat == GSS_S_BAD_BINDINGS) ? SASL_BADBINDING : SASL_BADAUTH;
goto cleanup;
}
assert(maj_stat == GSS_S_COMPLETE);
- if (!g_OID_equal(text->mechanism, actual_mech)) {
- ret = SASL_WRONGMECH;
- goto cleanup;
- }
if ((out_flags & GSS_C_SEQUENCE_FLAG) == 0) {
ret = SASL_BADAUTH;
goto cleanup;
GSS_C_NT_USER_NAME,
&without);
if (GSS_ERROR(maj_stat)) {
- ret = SASL_BADAUTH;
+ ret = SASL_FAIL;
goto cleanup;
}
maj_stat = gss_compare_name(&min_stat, text->client_name,
without, &equal);
if (GSS_ERROR(maj_stat)) {
- ret = SASL_BADAUTH;
+ ret = SASL_FAIL;
goto cleanup;
}
gss_release_buffer(&min_stat, &short_name_buf);
gss_release_buffer(&min_stat, &output_token);
gss_release_name(&min_stat, &without);
- gss_release_oid(&min_stat, &actual_mech);
if (ret == SASL_OK && maj_stat != GSS_S_COMPLETE) {
sasl_gs2_seterror(text->utils, maj_stat, min_stat);
ret = gs2_get_mech_attrs(utils, mech,
&splug->security_flags,
- &splug->features);
+ &splug->features,
+ NULL);
if (ret != SASL_OK)
return ret;
gss_buffer_desc name_buf = GSS_C_EMPTY_BUFFER;
OM_uint32 maj_stat = GSS_S_FAILURE, min_stat = 0;
OM_uint32 req_flags, ret_flags;
- gss_OID actual_mech = GSS_C_NO_OID;
int ret = SASL_FAIL;
int initialContextToken;
*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;
&text->client_name,
NULL,
&text->lifetime,
- &actual_mech,
+ NULL,
&ret_flags, /* flags */
NULL,
NULL);
if (GSS_ERROR(maj_stat))
goto cleanup;
- if (!g_OID_equal(text->mechanism, actual_mech)) {
- ret = SASL_WRONGMECH;
- goto cleanup;
- }
if ((ret_flags & req_flags) != req_flags) {
maj_stat = SASL_BADAUTH;
goto cleanup;
cleanup:
gss_release_buffer(&min_stat, &output_token);
gss_release_buffer(&min_stat, &name_buf);
- gss_release_oid(&min_stat, &actual_mech);
if (ret == SASL_OK && maj_stat != GSS_S_COMPLETE) {
sasl_gs2_seterror(text->utils, maj_stat, min_stat);
return SASL_OK;
}
-static const unsigned long gs2_required_prompts[] = {
- SASL_CB_LIST_END
-};
-
static int
gs2_client_plug_alloc(const sasl_utils_t *utils,
void *plug,
ret = gs2_get_mech_attrs(utils, mech,
&cplug->security_flags,
- &cplug->features);
+ &cplug->features,
+ &cplug->required_prompts);
if (ret != SASL_OK)
return ret;
cplug->mech_step = gs2_client_mech_step;
cplug->mech_dispose = gs2_common_mech_dispose;
cplug->mech_free = gs2_common_mech_free;
- cplug->required_prompts = gs2_required_prompts;
return SASL_OK;
}
return SASL_OK;
}
-#define CHECK_REMAIN(n) do { if (remain < (n)) return SASL_BADAUTH; } while (0)
+#define CHECK_REMAIN(n) do { if (remain < (n)) return SASL_BADPROT; } while (0)
/*
* Verify gs2-header, save authzid and channel bindings to context.
CHECK_REMAIN(1); /* = */
remain--;
if (*p++ != '=')
- return SASL_BADAUTH;
+ return SASL_BADPROT;
ret = gs2_unescape_authzid(text->utils, &p, &remain, &text->cbindingname);
if (ret != SASL_OK)
CHECK_REMAIN(1); /* , */
remain--;
if (*p++ != ',')
- return SASL_BADAUTH;
+ return SASL_BADPROT;
/* authorization identity */
if (remain > 1 && memcmp(p, "a=", 2) == 0) {
CHECK_REMAIN(1); /* , */
remain--;
if (*p++ != ',')
- return SASL_BADAUTH;
+ return SASL_BADPROT;
buf.length = inlen - remain;
buf.value = (void *)in;
return SASL_OK;
}
+static const unsigned long gs2_required_prompts[] = {
+ SASL_CB_LIST_END
+};
+
/*
* Map GSS mechanism attributes to SASL ones
*/
gs2_get_mech_attrs(const sasl_utils_t *utils,
const gss_OID mech,
unsigned int *security_flags,
- unsigned int *features)
+ unsigned int *features,
+ const unsigned long **prompts)
{
OM_uint32 major, minor;
- int present, ret;
+ int present;
gss_OID_set attrs = GSS_C_NO_OID_SET;
major = gss_inquire_attrs_for_mech(&minor, mech, &attrs, NULL);
*security_flags = SASL_SEC_NOPLAINTEXT | SASL_SEC_NOACTIVE;
*features = SASL_FEAT_WANT_CLIENT_FIRST | SASL_FEAT_CHANNEL_BINDING;
+ if (prompts != NULL)
+ *prompts = gs2_required_prompts;
#define MA_PRESENT(a) (gss_test_oid_set_member(&minor, (gss_OID)(a), \
attrs, &present) == GSS_S_COMPLETE && \
present)
- ret = SASL_OK;
-
if (MA_PRESENT(GSS_C_MA_PFS))
*security_flags |= SASL_SEC_FORWARD_SECRECY;
if (!MA_PRESENT(GSS_C_MA_AUTH_INIT_ANON))
*security_flags |= SASL_SEC_PASS_CREDENTIALS;
if (MA_PRESENT(GSS_C_MA_AUTH_TARG))
*security_flags |= SASL_SEC_MUTUAL_AUTH;
+ if (MA_PRESENT(GSS_C_MA_AUTH_INIT_INIT) && prompts != NULL)
+ *prompts = NULL;
if (MA_PRESENT(GSS_C_MA_ITOK_FRAMED))
*features |= SASL_FEAT_GSS_FRAMING;
gss_release_oid_set(&minor, &attrs);
- return ret;
+
+ return SASL_OK;
}
/*
return SASL_OK;
}
+#define GOT_CREDS(text, params) ((text)->client_creds != NULL || (params)->gss_creds != NULL)
+
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, min_stat;
+ gss_OID_set_desc mechs;
+ gss_buffer_desc cred_authid = GSS_C_EMPTY_BUFFER;
+
+ mechs.count = 1;
+ mechs.elements = (gss_OID)text->mechanism;
- /* try to get the authid */
+ /*
+ * Determine the authentication identity from the application supplied
+ * GSS credential, the default GSS credential, and the application
+ * supplied identity, in that order.
+ */
if (oparams->authid == NULL) {
- auth_result = _plug_get_authid(params->utils, &authid, prompt_need);
+ assert(text->client_name == GSS_C_NO_NAME);
- if (auth_result != SASL_OK && auth_result != SASL_INTERACT) {
- return auth_result;
+ if (!GOT_CREDS(text, params)) {
+ maj_stat = gss_acquire_cred(&min_stat,
+ GSS_C_NO_NAME,
+ GSS_C_INDEFINITE,
+ &mechs,
+ GSS_C_INITIATE,
+ &text->client_creds,
+ NULL,
+ &text->lifetime);
+ } else
+ maj_stat = GSS_S_COMPLETE;
+
+ if (maj_stat == GSS_S_COMPLETE) {
+ 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;
+ } else if (maj_stat != GSS_S_CRED_UNAVAIL)
+ goto cleanup;
+
+ if (text->client_name != GSS_C_NO_NAME) {
+ maj_stat = gss_display_name(&min_stat,
+ text->client_name,
+ &cred_authid,
+ NULL);
+ if (GSS_ERROR(maj_stat))
+ goto cleanup;
+
+ authid = cred_authid.value;
+ } else {
+ auth_result = _plug_get_authid(params->utils, &authid, prompt_need);
+ if (auth_result != SASL_OK && auth_result != SASL_INTERACT) {
+ result = auth_result;
+ goto cleanup;
+ }
}
}
- /* try to get the userid */
+ /*
+ * Get the authorization identity.
+ */
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;
+ 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;
}
+
+ assert(oparams->authid != NULL);
}
+ /*
+ * If the application has provided an authentication identity, parse it.
+ */
+ if (text->client_name == GSS_C_NO_NAME && oparams->authid != NULL) {
+ gss_buffer_desc name_buf;
+
+ name_buf.length = strlen(oparams->authid);
+ name_buf.value = (void *)oparams->authid;
+
+ maj_stat = gss_import_name(&min_stat,
+ &name_buf,
+ GSS_C_NT_USER_NAME,
+ &text->client_name);
+ if (GSS_ERROR(maj_stat))
+ 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 (maj_stat != GSS_S_COMPLETE && maj_stat != GSS_S_CRED_UNAVAIL)
+ 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