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/*
SSSD
files_init.c - Initialization of the files provider
Copyright (C) 2018 Red Hat
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 "providers/files/files_private.h"
#include "util/util.h"
#include "util/cert.h"
#include "lib/certmap/sss_certmap.h"
struct priv_sss_debug {
int level;
};
static void ext_debug(void *private, const char *file, long line,
const char *function, const char *format, ...)
{
va_list ap;
struct priv_sss_debug *data = private;
int level = SSSDBG_OP_FAILURE;
if (data != NULL) {
level = data->level;
}
va_start(ap, format);
sss_vdebug_fn(file, line, function, level, APPEND_LINE_FEED, format, ap);
va_end(ap);
}
errno_t files_init_certmap(TALLOC_CTX *mem_ctx, struct files_id_ctx *id_ctx)
{
int ret;
bool hint;
struct certmap_info **certmap_list = NULL;
size_t c;
ret = sysdb_get_certmap(mem_ctx, id_ctx->be->domain->sysdb,
&certmap_list, &hint);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, "sysdb_get_certmap failed.\n");
goto done;
}
if (certmap_list == NULL || *certmap_list == NULL) {
DEBUG(SSSDBG_TRACE_ALL, "No certmap data, nothing to do.\n");
ret = EOK;
goto done;
}
ret = sss_certmap_init(mem_ctx, ext_debug, NULL, &id_ctx->sss_certmap_ctx);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, "sss_certmap_init failed.\n");
goto done;
}
for (c = 0; certmap_list[c] != NULL; c++) {
DEBUG(SSSDBG_TRACE_ALL, "Trying to add rule [%s][%d][%s][%s].\n",
certmap_list[c]->name,
certmap_list[c]->priority,
certmap_list[c]->match_rule,
certmap_list[c]->map_rule);
ret = sss_certmap_add_rule(id_ctx->sss_certmap_ctx,
certmap_list[c]->priority,
certmap_list[c]->match_rule,
certmap_list[c]->map_rule,
certmap_list[c]->domains);
if (ret != 0) {
DEBUG(SSSDBG_CRIT_FAILURE,
"sss_certmap_add_rule failed for rule [%s] "
"with error [%d][%s], skipping. "
"Please check for typos and if rule syntax is supported.\n",
certmap_list[c]->name, ret, sss_strerror(ret));
continue;
}
}
ret = EOK;
done:
talloc_free(certmap_list);
return ret;
}
errno_t files_map_cert_to_user(struct files_id_ctx *id_ctx,
struct dp_id_data *data)
{
errno_t ret;
char *filter;
char *user;
struct ldb_message *msg = NULL;
struct sysdb_attrs *attrs = NULL;
TALLOC_CTX *tmp_ctx;
tmp_ctx = talloc_new(NULL);
if (tmp_ctx == NULL) {
DEBUG(SSSDBG_OP_FAILURE, "talloc_new failed.\n");
return ENOMEM;
}
ret = sss_cert_derb64_to_ldap_filter(tmp_ctx, data->filter_value, "",
id_ctx->sss_certmap_ctx,
id_ctx->domain, &filter);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE,
"sss_cert_derb64_to_ldap_filter failed.\n");
goto done;
}
if (filter == NULL || filter[0] != '('
|| filter[strlen(filter) - 1] != ')') {
DEBUG(SSSDBG_OP_FAILURE,
"sss_cert_derb64_to_ldap_filter returned bad filter [%s].\n",
filter);
ret = EINVAL;
goto done;
}
filter[strlen(filter) - 1] = '\0';
user = sss_create_internal_fqname(tmp_ctx, &filter[1],
id_ctx->domain->name);
if (user == NULL) {
DEBUG(SSSDBG_OP_FAILURE, "sss_create_internal_fqname failed.\n");
ret = ENOMEM;
goto done;
}
DEBUG(SSSDBG_TRACE_ALL, "Certificate mapped to user: [%s].\n", user);
ret = sysdb_search_user_by_name(tmp_ctx, id_ctx->domain, user, NULL, &msg);
if (ret == EOK) {
attrs = sysdb_new_attrs(tmp_ctx);
if (attrs == NULL) {
DEBUG(SSSDBG_OP_FAILURE, "sysdb_new_attrs failed.\n");
ret = ENOMEM;
goto done;
}
ret = sysdb_attrs_add_base64_blob(attrs, SYSDB_USER_MAPPED_CERT,
data->filter_value);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, "sysdb_attrs_add_base64_blob failed.\n");
goto done;
}
ret = sysdb_set_entry_attr(id_ctx->domain->sysdb, msg->dn, attrs,
SYSDB_MOD_ADD);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, "sysdb_set_entry_attr failed.\n");
goto done;
}
} else if (ret == ENOENT) {
DEBUG(SSSDBG_TRACE_ALL, "Mapped user [%s] not found.\n", user);
ret = EOK;
goto done;
} else {
DEBUG(SSSDBG_OP_FAILURE, "sysdb_search_user_by_name failed.\n");
goto done;
}
ret = EOK;
done:
talloc_free(tmp_ctx);
return ret;
}
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