idmap/idmapd/init.c

	init.c revision 2b4a78020b9c38d1b95e2f3fefa6d6e4be382d1f
/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*
 * Initialization routines
 */

#include "idmapd.h"
#include <signal.h>
#include <thread.h>
#include <string.h>
#include <errno.h>
#include <assert.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <rpcsvc/daemon_utils.h>


int
init_mapping_system()
{
    int rc = 0;

    if (rwlock_init(&_idmapdstate.rwlk_cfg, USYNC_THREAD, NULL) != 0)
        return (-1);
    if ((rc = load_config()) < 0)
        return (rc);

    (void) setegid(DAEMON_GID);
    (void) seteuid(DAEMON_UID);
    if (init_dbs() < 0) {
        rc = -1;
        fini_mapping_system();
    }
    (void) seteuid(0);
    (void) setegid(0);

    return (rc);
}

void
fini_mapping_system()
{
    fini_dbs();
}

int
load_config()
{
    int rc;
    if ((_idmapdstate.cfg = idmap_cfg_init()) == NULL) {
        degrade_svc(0, "failed to initialize config");
        return (-1);
    }

    rc = idmap_cfg_load(_idmapdstate.cfg, 0);
    if (rc < -1) {
        /* Total failure */
        degrade_svc(0, "fatal error while loading configuration");
        return (rc);
    }

    if (rc != 0)
        /* Partial failure */
        idmapdlog(LOG_ERR, "Various errors occurred while loading "
            "the configuration; check the logs");

    if ((rc = idmap_cfg_start_updates()) < 0) {
        /* Total failure */
        degrade_svc(0, "could not start config updater");
        return (rc);
    }

    idmapdlog(LOG_DEBUG, "Initial configuration loaded");

    return (0);
}


void
reload_ad()
{
    int     i;
    adutils_ad_t    *old;
    adutils_ad_t    *new;

    idmap_pg_config_t *pgcfg = &_idmapdstate.cfg->pgcfg;

    if (pgcfg->global_catalog == NULL ||
        pgcfg->global_catalog[0].host[0] == '\0') {
        /*
         * No GCs.  Continue to use the previous AD config in case
         * that's still good but auto-discovery had a transient failure.
         * If that stops working we'll go into degraded mode anyways
         * when it does.
         */
        degrade_svc(0,
            "Global Catalog servers not configured/discoverable");
        return;
    }

    old = _idmapdstate.ad;

    if (adutils_ad_alloc(&new, pgcfg->default_domain,
        ADUTILS_AD_GLOBAL_CATALOG) != ADUTILS_SUCCESS) {
        degrade_svc(0, "could not initialize AD context");
        return;
    }

    for (i = 0; pgcfg->global_catalog[i].host[0] != '\0'; i++) {
        if (idmap_add_ds(new,
            pgcfg->global_catalog[i].host,
            pgcfg->global_catalog[i].port) != 0) {
            adutils_ad_free(&new);
            degrade_svc(0, "could not initialize AD GC context");
            return;
        }
    }

    _idmapdstate.ad = new;

    if (old != NULL)
        adutils_ad_free(&old);
}


void
print_idmapdstate()
{
    int i;
    idmap_pg_config_t *pgcfg;

    RDLOCK_CONFIG();

    if (_idmapdstate.cfg == NULL) {
        idmapdlog(LOG_INFO, "Null configuration");
        UNLOCK_CONFIG();
        return;
    }

    pgcfg = &_idmapdstate.cfg->pgcfg;

    idmapdlog(LOG_DEBUG, "list_size_limit=%llu", pgcfg->list_size_limit);
    idmapdlog(LOG_DEBUG, "default_domain=%s",
        CHECK_NULL(pgcfg->default_domain));
    idmapdlog(LOG_DEBUG, "domain_name=%s", CHECK_NULL(pgcfg->domain_name));
    idmapdlog(LOG_DEBUG, "machine_sid=%s", CHECK_NULL(pgcfg->machine_sid));
    if (pgcfg->domain_controller == NULL ||
        pgcfg->domain_controller[0].host[0] == '\0') {
        idmapdlog(LOG_DEBUG, "No domain controllers known");
    } else {
        for (i = 0; pgcfg->domain_controller[i].host[0] != '\0'; i++)
            idmapdlog(LOG_DEBUG, "domain_controller=%s port=%d",
                pgcfg->domain_controller[i].host,
                pgcfg->domain_controller[i].port);
    }
    idmapdlog(LOG_DEBUG, "forest_name=%s", CHECK_NULL(pgcfg->forest_name));
    idmapdlog(LOG_DEBUG, "site_name=%s", CHECK_NULL(pgcfg->site_name));
    if (pgcfg->global_catalog == NULL ||
        pgcfg->global_catalog[0].host[0] == '\0') {
        idmapdlog(LOG_DEBUG, "No global catalog servers known");
    } else {
        for (i = 0; pgcfg->global_catalog[i].host[0] != '\0'; i++)
            idmapdlog(LOG_DEBUG, "global_catalog=%s port=%d",
                pgcfg->global_catalog[i].host,
                pgcfg->global_catalog[i].port);
    }
    idmapdlog(LOG_DEBUG, "ds_name_mapping_enabled=%s",
        (pgcfg->ds_name_mapping_enabled == TRUE) ? "true" : "false");
    idmapdlog(LOG_DEBUG, "ad_unixuser_attr=%s",
        CHECK_NULL(pgcfg->ad_unixuser_attr));
    idmapdlog(LOG_DEBUG, "ad_unixgroup_attr=%s",
        CHECK_NULL(pgcfg->ad_unixgroup_attr));
    idmapdlog(LOG_DEBUG, "nldap_winname_attr=%s",
        CHECK_NULL(pgcfg->nldap_winname_attr));

    UNLOCK_CONFIG();
}

int
create_directory(const char *path, uid_t uid, gid_t gid)
{
    int rc;

    if ((rc = mkdir(path, 0700)) < 0 && errno != EEXIST) {
        idmapdlog(LOG_ERR, "Error creating directory %s (%s)",
            path, strerror(errno));
        return (-1);
    }

    if (lchown(path, uid, gid) < 0) {
        idmapdlog(LOG_ERR, "Error creating directory %s (%s)",
            path, strerror(errno));
        if (rc == 0)
            (void) rmdir(path);
        return (-1);
    }
    return (0);
}