src/providers/ldap/sdap.c


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/*
    SSSD

    LDAP Helper routines

    Copyright (C) Simo Sorce <ssorce@redhat.com>

    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 "util/util.h"
#include "util/crypto/sss_crypto.h"
#include "confdb/confdb.h"
#include "providers/ldap/ldap_common.h"
#include "providers/ldap/sdap.h"
#include "providers/ldap/sdap_range.h"

/* =Retrieve-Options====================================================== */

int sdap_get_map(TALLOC_CTX *memctx,
                 struct confdb_ctx *cdb,
                 const char *conf_path,
                 struct sdap_attr_map *def_map,
                 int num_entries,
                 struct sdap_attr_map **_map)
{
    struct sdap_attr_map *map;
    char *name;
    int i, ret;

    map = talloc_array(memctx, struct sdap_attr_map, num_entries);
    if (!map) {
        return ENOMEM;
    }

    for (i = 0; i < num_entries; i++) {

        map[i].opt_name = def_map[i].opt_name;
        map[i].def_name = def_map[i].def_name;
        map[i].sys_name = def_map[i].sys_name;

        ret = confdb_get_string(cdb, map, conf_path,
                                map[i].opt_name,
                                map[i].def_name,
                                &name);
        if (ret != EOK) {
            DEBUG(SSSDBG_CRIT_FAILURE,
                  ("Failed to retrieve value for %s\n", map[i].opt_name));
            talloc_zfree(map);
            return EINVAL;
        }

        if (name) {
            ret = sss_filter_sanitize(map, name, &map[i].name);
            if (ret != EOK) {
                DEBUG(SSSDBG_CRIT_FAILURE,
                      ("Could not sanitize attribute [%s]\n", name));
                talloc_zfree(map);
                return EINVAL;
            }
            talloc_zfree(name);
        } else {
            map[i].name = NULL;
        }

        if (map[i].def_name && !map[i].name) {
            DEBUG(SSSDBG_CRIT_FAILURE,
                  ("Failed to retrieve value for %s\n", map[i].opt_name));
            if (ret != EOK) {
                talloc_zfree(map);
                return EINVAL;
            }
        }

        DEBUG(SSSDBG_TRACE_FUNC, ("Option %s has%s value %s\n",
              map[i].opt_name, map[i].name ? "" : " no",
              map[i].name ? map[i].name : ""));
    }

    *_map = map;
    return EOK;
}

/* =Parse-msg============================================================= */

int sdap_parse_entry(TALLOC_CTX *memctx,
                     struct sdap_handle *sh, struct sdap_msg *sm,
                     struct sdap_attr_map *map, int attrs_num,
                     struct sysdb_attrs **_attrs, char **_dn)
{
    struct sysdb_attrs *attrs;
    BerElement *ber = NULL;
    struct berval **vals;
    struct ldb_val v;
    char *str;
    int lerrno;
    int a, i, ret;
    const char *name;
    bool store;
    bool base64;
    char *base_attr;
    char *dn = NULL;
    uint32_t range_offset;
    TALLOC_CTX *tmp_ctx = talloc_new(NULL);
    if (!tmp_ctx) return ENOMEM;

    lerrno = 0;
    ret = ldap_set_option(sh->ldap, LDAP_OPT_RESULT_CODE, &lerrno);
    if (ret != LDAP_OPT_SUCCESS) {
        DEBUG(1, ("ldap_set_option failed [%s], ignored.\n",
                  sss_ldap_err2string(ret)));
    }

    attrs = sysdb_new_attrs(tmp_ctx);
    if (!attrs) {
        ret = ENOMEM;
        goto done;
    }

    str = ldap_get_dn(sh->ldap, sm->msg);
    if (!str) {
        ldap_get_option(sh->ldap, LDAP_OPT_RESULT_CODE, &lerrno);
        DEBUG(1, ("ldap_get_dn failed: %d(%s)\n",
                  lerrno, sss_ldap_err2string(lerrno)));
        ret = EIO;
        goto done;
    }

    DEBUG(9, ("OriginalDN: [%s].\n", str));
    ret = sysdb_attrs_add_string(attrs, SYSDB_ORIG_DN, str);
    if (ret) goto done;
    if (_dn) {
        dn = talloc_strdup(tmp_ctx, str);
        if (!dn) {
            ret = ENOMEM;
            ldap_memfree(str);
            goto done;
        }
    }
    ldap_memfree(str);