--- /dev/null
+/*
+ * Copyright (c) 2012-2018, JANET(UK)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * 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 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.
+ *
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <jansson.h>
+#include <dirent.h>
+#include <talloc.h>
+
+#include <tr_cfgwatch.h>
+#include <tr_comm.h>
+#include <tr_config.h>
+#include <tr_gss_names.h>
+#include <tr_debug.h>
+#include <tr_filter.h>
+#include <tr_constraint_internal.h>
+#include <tr_idp.h>
+#include <tr.h>
+#include <trust_router/trp.h>
+
+#if JANSSON_VERSION_HEX < 0x020500
+#include "jansson_iterators.h"
+#endif
+
+
+TR_CFG_RC tr_cfg_parse_gss_names(TALLOC_CTX *mem_ctx, json_t *jgss_names, TR_GSS_NAMES **gssn_out)
+{
+ TALLOC_CTX *tmp_ctx=talloc_new(NULL);
+ TR_GSS_NAMES *gn=NULL;
+ json_t *jname=NULL;
+ size_t ii=0;
+ TR_NAME *name=NULL;
+ TR_CFG_RC rc = TR_CFG_ERROR;
+
+ if (jgss_names==NULL) {
+ tr_err("tr_cfg_parse_gss_names: Bad parameters.");
+ rc=TR_CFG_BAD_PARAMS;
+ goto cleanup;
+ }
+
+ if (!json_is_array(jgss_names)) {
+ tr_err("tr_cfg_parse_gss_names: gss_names not an array.");
+ rc=TR_CFG_NOPARSE;
+ goto cleanup;
+ }
+
+ gn=tr_gss_names_new(tmp_ctx);
+ for (ii=0; ii<json_array_size(jgss_names); ii++) {
+ jname=json_array_get(jgss_names, ii);
+ if (!json_is_string(jname)) {
+ tr_err("tr_cfg_parse_gss_names: Encountered non-string gss name.");
+ rc=TR_CFG_NOPARSE;
+ goto cleanup;
+ }
+
+ name=tr_new_name(json_string_value(jname));
+ if (name==NULL) {
+ tr_err("tr_cfg_parse_gss_names: Out of memory allocating gss name.");
+ rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+
+ if (tr_gss_names_add(gn, name)!=0) {
+ tr_free_name(name);
+ tr_err("tr_cfg_parse_gss_names: Unable to add gss name to RP client.");
+ rc=TR_CFG_ERROR;
+ goto cleanup;
+ }
+ }
+
+ *gssn_out = gn;
+ talloc_steal(mem_ctx, *gssn_out);
+ rc=TR_CFG_SUCCESS;
+
+cleanup:
+ talloc_free(tmp_ctx);
+ return rc;
+}
+
+/* default filter accepts realm and *.realm */
+static TR_FILTER_SET *tr_cfg_default_filters(TALLOC_CTX *mem_ctx, TR_NAME *realm, TR_CFG_RC *rc)
+{
+ TALLOC_CTX *tmp_ctx=talloc_new(NULL);
+ TR_FILTER *filt=NULL;
+ TR_FLINE *fline = NULL;
+ TR_FSPEC *fspec = NULL;
+ TR_FILTER_SET *filt_set=NULL;
+ TR_CONSTRAINT *cons=NULL;
+ TR_NAME *name=NULL;
+ TR_NAME *n_prefix=tr_new_name("*.");
+ TR_NAME *n_rp_realm_1=tr_new_name("rp_realm");
+ TR_NAME *n_rp_realm_2=tr_new_name("rp_realm");
+ TR_NAME *n_domain=tr_new_name("domain");
+ TR_NAME *n_realm=tr_new_name("realm");
+
+
+ if ((realm==NULL) || (rc==NULL)) {
+ tr_debug("tr_cfg_default_filters: invalid arguments.");
+ if (rc!=NULL)
+ *rc=TR_CFG_BAD_PARAMS;
+ goto cleanup;
+ }
+
+ if ((n_prefix==NULL) ||
+ (n_rp_realm_1==NULL) ||
+ (n_rp_realm_2==NULL) ||
+ (n_domain==NULL) ||
+ (n_realm==NULL)) {
+ tr_debug("tr_cfg_default_filters: unable to allocate names.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+
+ filt=tr_filter_new(tmp_ctx);
+ if (filt==NULL) {
+ tr_debug("tr_cfg_default_filters: could not allocate filter.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+ tr_filter_set_type(filt, TR_FILTER_TYPE_TID_INBOUND);
+
+ fline = tr_fline_new(tmp_ctx);
+ if (fline==NULL) {
+ tr_debug("tr_cfg_default_filters: could not allocate filter line.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+
+ fline->action=TR_FILTER_ACTION_ACCEPT;
+
+ fspec=tr_fspec_new(tmp_ctx);
+ fspec->field=n_rp_realm_1;
+ n_rp_realm_1=NULL; /* we don't own this name any more */
+
+ name=tr_dup_name(realm);
+ if (name==NULL) {
+ tr_debug("tr_cfg_default_filters: could not allocate realm name.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+ tr_fspec_add_match(fspec, name);
+ name=NULL; /* we no longer own the name */
+
+ if (tr_fline_add_spec(fline, fspec) == NULL) {
+ tr_debug("tr_cfg_default_filters: could not add first spec to filter line");
+ *rc = TR_CFG_NOMEM;
+ goto cleanup;
+ }
+
+ /* now do the wildcard name */
+ fspec=tr_fspec_new(tmp_ctx);
+ fspec->field=n_rp_realm_2;
+ n_rp_realm_2=NULL; /* we don't own this name any more */
+
+ if (NULL==(name=tr_name_cat(n_prefix, realm))) {
+ tr_debug("tr_cfg_default_filters: could not allocate wildcard realm name.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+
+ tr_fspec_add_match(fspec, name);
+ name=NULL; /* we no longer own the name */
+
+ if (tr_fline_add_spec(fline, fspec) == NULL) {
+ tr_debug("tr_cfg_default_filters: could not add second spec to filter line");
+ *rc = TR_CFG_NOMEM;
+ goto cleanup;
+ }
+
+ /* domain constraint */
+ if (NULL==(cons=tr_constraint_new(fline))) {
+ tr_debug("tr_cfg_default_filters: could not allocate domain constraint.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+
+ cons->type=n_domain;
+ n_domain=NULL; /* belongs to the constraint now */
+ name=tr_dup_name(realm);
+ if (name==NULL) {
+ tr_debug("tr_cfg_default_filters: could not allocate realm name for domain constraint.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+ if (NULL == tr_constraint_add_match(cons, name)) {
+ tr_debug("tr_cfg_default_filters: could not add realm name for domain constraint.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+ name=tr_name_cat(n_prefix, realm);
+ if (name==NULL) {
+ tr_debug("tr_cfg_default_filters: could not allocate wildcard realm name for domain constraint.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+ if (NULL == tr_constraint_add_match(cons, name)) {
+ tr_debug("tr_cfg_default_filters: could not add wildcard realm name for domain constraint.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+ name=NULL;
+ fline->domain_cons=cons;
+
+
+ /* realm constraint */
+ if (NULL==(cons=tr_constraint_new(fline))) {
+ tr_debug("tr_cfg_default_filters: could not allocate realm constraint.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+
+ cons->type=n_realm;
+ n_realm=NULL; /* belongs to the constraint now */
+ name=tr_dup_name(realm);
+ if (name==NULL) {
+ tr_debug("tr_cfg_default_filters: could not allocate realm name for realm constraint.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+ if (NULL == tr_constraint_add_match(cons, name)) {
+ tr_debug("tr_cfg_default_filters: could not add realm name for realm constraint.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+ name=tr_name_cat(n_prefix, realm);
+ if (name==NULL) {
+ tr_debug("tr_cfg_default_filters: could not allocate wildcard realm name for realm constraint.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+ if (NULL == tr_constraint_add_match(cons, name)) {
+ tr_debug("tr_cfg_default_filters: could not add wildcard realm name for realm constraint.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+ name=NULL;
+ fline->realm_cons=cons;
+
+ /* put the fline in the filter */
+ if (NULL == tr_filter_add_line(filt, fline)) {
+ tr_debug("tr_cfg_default_filters: could not add line to filter.");
+ *rc = TR_CFG_NOMEM;
+ goto cleanup;
+ }
+
+ /* put the filter in a set */
+ filt_set=tr_filter_set_new(tmp_ctx);
+ if ((filt_set==NULL)||(0!=tr_filter_set_add(filt_set, filt))) {
+ tr_debug("tr_cfg_default_filters: could not allocate filter set.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+ talloc_steal(mem_ctx, filt_set);
+
+cleanup:
+ talloc_free(tmp_ctx);
+
+ if (*rc!=TR_CFG_SUCCESS)
+ filt=NULL;
+
+ if (n_prefix!=NULL)
+ tr_free_name(n_prefix);
+ if (n_rp_realm_1!=NULL)
+ tr_free_name(n_rp_realm_1);
+ if (n_rp_realm_2!=NULL)
+ tr_free_name(n_rp_realm_2);
+ if (n_realm!=NULL)
+ tr_free_name(n_realm);
+ if (n_domain!=NULL)
+ tr_free_name(n_domain);
+ if (name!=NULL)
+ tr_free_name(name);
+
+ return filt_set;
+}
+
+/* parses rp client */
+static TR_RP_CLIENT *tr_cfg_parse_one_rp_client(TALLOC_CTX *mem_ctx, json_t *jrealm, TR_CFG_RC *rc)
+{
+ TALLOC_CTX *tmp_ctx=talloc_new(NULL);
+ TR_RP_CLIENT *client=NULL;
+ TR_CFG_RC call_rc=TR_CFG_ERROR;
+ TR_FILTER_SET *new_filts=NULL;
+ TR_NAME *realm=NULL;
+ json_t *jfilt=NULL;
+ json_t *jrealm_id=NULL;
+
+ *rc=TR_CFG_ERROR; /* default to error if not set */
+
+ if ((!jrealm) || (!rc)) {
+ tr_err("tr_cfg_parse_one_rp_client: Bad parameters.");
+ if (rc)
+ *rc=TR_CFG_BAD_PARAMS;
+ goto cleanup;
+ }
+
+ if ((NULL==(jrealm_id=json_object_get(jrealm, "realm"))) || (!json_is_string(jrealm_id))) {
+ tr_debug("tr_cfg_parse_one_rp_client: no realm ID found.");
+ *rc=TR_CFG_BAD_PARAMS;
+ goto cleanup;
+ }
+
+ tr_debug("tr_cfg_parse_one_rp_client: realm_id=\"%s\"", json_string_value(jrealm_id));
+ realm=tr_new_name(json_string_value(jrealm_id));
+ if (realm==NULL) {
+ tr_err("tr_cfg_parse_one_rp_client: could not allocate realm ID.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+
+ if (NULL==(client=tr_rp_client_new(tmp_ctx))) {
+ tr_err("tr_cfg_parse_one_rp_client: could not allocate rp client.");
+ *rc=TR_CFG_NOMEM;
+ goto cleanup;
+ }
+
+ call_rc = tr_cfg_parse_gss_names(client, json_object_get(jrealm, "gss_names"), &(client->gss_names));
+
+ if (call_rc!=TR_CFG_SUCCESS) {
+ tr_err("tr_cfg_parse_one_rp_client: could not parse gss_names.");
+ *rc=TR_CFG_NOPARSE;
+ goto cleanup;
+ }
+
+ /* parse filters */
+ jfilt=json_object_get(jrealm, "filters");
+ if (jfilt!=NULL) {
+ new_filts=tr_cfg_parse_filters(tmp_ctx, jfilt, &call_rc);
+ if (call_rc!=TR_CFG_SUCCESS) {
+ tr_err("tr_cfg_parse_one_rp_client: could not parse filters.");
+ *rc=TR_CFG_NOPARSE;
+ goto cleanup;
+ }
+ } else {
+ tr_debug("tr_cfg_parse_one_rp_client: no filters specified, using default filters.");
+ new_filts= tr_cfg_default_filters(tmp_ctx, realm, &call_rc);
+ if (call_rc!=TR_CFG_SUCCESS) {
+ tr_err("tr_cfg_parse_one_rp_client: could not set default filters.");
+ *rc=TR_CFG_NOPARSE;
+ goto cleanup;
+ }
+ }
+
+ tr_rp_client_set_filters(client, new_filts);
+ *rc=TR_CFG_SUCCESS;
+
+cleanup:
+ if (realm!=NULL)
+ tr_free_name(realm);
+
+ if (*rc==TR_CFG_SUCCESS)
+ talloc_steal(mem_ctx, client);
+ else {
+ talloc_free(client);
+ client=NULL;
+ }
+
+ talloc_free(tmp_ctx);
+ return client;
+}
+
+/* Determine whether the realm is an RP realm */
+static int tr_cfg_is_rp_realm(json_t *jrealm)
+{
+ /* Check that we have a gss name. */
+ if (NULL != json_object_get(jrealm, "gss_names"))
+ return 1;
+ else
+ return 0;
+}
+
+/* Parse any rp clients in the j_realms object. Ignores other realms. */
+TR_RP_CLIENT *tr_cfg_parse_rp_clients(TALLOC_CTX *mem_ctx, json_t *jrealms, TR_CFG_RC *rc)
+{
+ TALLOC_CTX *tmp_ctx=talloc_new(NULL);
+ TR_RP_CLIENT *clients=NULL;
+ TR_RP_CLIENT *new_client=NULL;
+ json_t *this_jrealm=NULL;
+ int ii=0;
+
+ *rc=TR_CFG_ERROR;
+ if ((jrealms==NULL) || (!json_is_array(jrealms))) {
+ tr_err("tr_cfg_parse_rp_clients: realms not an array");
+ *rc=TR_CFG_BAD_PARAMS;
+ goto cleanup;
+ }
+
+ for (ii=0; ii<json_array_size(jrealms); ii++) {
+ this_jrealm=json_array_get(jrealms, ii);
+ if (tr_cfg_is_rp_realm(this_jrealm)) {
+ new_client=tr_cfg_parse_one_rp_client(tmp_ctx, this_jrealm, rc);
+ if ((*rc)!=TR_CFG_SUCCESS) {
+ tr_err("tr_cfg_parse_rp_clients: error decoding realm entry %d", ii+1);
+ *rc=TR_CFG_NOPARSE;
+ goto cleanup;
+ }
+ tr_rp_client_add(clients, new_client);
+ }
+ }
+
+ *rc=TR_CFG_SUCCESS;
+ talloc_steal(mem_ctx, clients);
+
+cleanup:
+ talloc_free(tmp_ctx);
+ return clients;
+}
projects / trust_router.git / blobdiff