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/*
SSSD
PAC Responder
Copyright (C) Sumit Bose <sbose@redhat.com> 2011
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 <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <string.h>
#include <sys/time.h>
#include <errno.h>
#include <popt.h>
#include <dbus/dbus.h>
#include "util/util.h"
#include "responder/pac/pacsrv.h"
#include "db/sysdb.h"
#include "confdb/confdb.h"
#include "responder/common/responder_packet.h"
#include "responder/common/responder.h"
#include "providers/data_provider.h"
#include "util/util_sss_idmap.h"
#include "sss_iface/sss_iface_async.h"
#define SSS_PAC_PIPE_NAME "pac"
#define DEFAULT_PAC_FD_LIMIT 8192
#define DEFAULT_ALLOWED_UIDS "0"
int pac_process_init(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct confdb_ctx *cdb)
{
struct resp_ctx *rctx;
struct sss_cmd_table *pac_cmds;
struct pac_ctx *pac_ctx;
int ret;
enum idmap_error_code err;
int fd_limit;
char *uid_str;
pac_cmds = get_pac_cmds();
ret = sss_process_init(mem_ctx, ev, cdb,
pac_cmds,
SSS_PAC_SOCKET_NAME, -1, NULL, -1,
CONFDB_PAC_CONF_ENTRY,
SSS_BUS_PAC, PAC_SBUS_SERVICE_NAME,
sss_connection_setup,
&rctx);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE, "sss_process_init() failed\n");
return ret;
}
pac_ctx = talloc_zero(rctx, struct pac_ctx);
if (!pac_ctx) {
DEBUG(SSSDBG_FATAL_FAILURE, "fatal error initializing pac_ctx\n");
ret = ENOMEM;
goto fail;
}
pac_ctx->rctx = rctx;
pac_ctx->rctx->pvt_ctx = pac_ctx;
ret = confdb_get_string(pac_ctx->rctx->cdb, pac_ctx->rctx,
CONFDB_PAC_CONF_ENTRY, CONFDB_SERVICE_ALLOWED_UIDS,
DEFAULT_ALLOWED_UIDS, &uid_str);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE, "Failed to get allowed UIDs.\n");
goto fail;
}
ret = csv_string_to_uid_array(pac_ctx->rctx, uid_str,
&pac_ctx->rctx->allowed_uids_count,
&pac_ctx->rctx->allowed_uids);
talloc_free(uid_str);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE, "Failed to set allowed UIDs.\n");
goto fail;
}
err = sss_idmap_init(sss_idmap_talloc, pac_ctx, sss_idmap_talloc_free,
&pac_ctx->idmap_ctx);
if (err != IDMAP_SUCCESS) {
DEBUG(SSSDBG_FATAL_FAILURE, "sss_idmap_init failed.\n");
ret = EFAULT;
goto fail;
}
/* Set up file descriptor limits */
ret = confdb_get_int(pac_ctx->rctx->cdb,
CONFDB_PAC_CONF_ENTRY,
CONFDB_SERVICE_FD_LIMIT,
DEFAULT_PAC_FD_LIMIT,
&fd_limit);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE,
"Failed to set up file descriptor limit\n");
goto fail;
}
responder_set_fd_limit(fd_limit);
ret = confdb_get_int(pac_ctx->rctx->cdb, CONFDB_PAC_CONF_ENTRY,
CONFDB_PAC_LIFETIME, 300,
&pac_ctx->pac_lifetime);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE,
"Failed to setup pac lifetime timeout [%s].\n",
CONFDB_PAC_LIFETIME);
goto fail;
}
ret = get_pac_check_config(pac_ctx->rctx->cdb, &pac_ctx->pac_check_opts);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE, "Failed to get pac_check");
goto fail;
}
ret = schedule_get_domains_task(rctx, rctx->ev, rctx, NULL, NULL, NULL);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE, "schedule_get_domains_tasks failed.\n");
goto fail;
}
/* The responder is initialized. Now tell it to the monitor. */
ret = sss_monitor_service_init(rctx, rctx->ev, SSS_BUS_PAC,
PAC_SBUS_SERVICE_NAME,
PAC_SBUS_SERVICE_VERSION,
MT_SVC_SERVICE,
&rctx->last_request_time, &rctx->mon_conn);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE, "fatal error setting up message bus\n");
goto fail;
}
ret = sss_resp_register_service_iface(rctx);
if (ret != EOK) {
goto fail;
}
DEBUG(SSSDBG_TRACE_FUNC, "PAC Initialization complete\n");
return EOK;
fail:
talloc_free(rctx);
return ret;
}
int main(int argc, const char *argv[])
{
int opt;
poptContext pc;
char *opt_logger = NULL;
struct main_context *main_ctx;
int ret;
uid_t uid = 0;
gid_t gid = 0;
struct poptOption long_options[] = {
POPT_AUTOHELP
SSSD_MAIN_OPTS
SSSD_LOGGER_OPTS
SSSD_SERVER_OPTS(uid, gid)
SSSD_RESPONDER_OPTS
POPT_TABLEEND
};
/* Set debug level to invalid value so we can decide if -d 0 was used. */
debug_level = SSSDBG_INVALID;
umask(DFL_RSP_UMASK);
pc = poptGetContext(argv[0], argc, argv, long_options, 0);
while((opt = poptGetNextOpt(pc)) != -1) {
switch(opt) {
default:
fprintf(stderr, "\nInvalid option %s: %s\n\n",
poptBadOption(pc, 0), poptStrerror(opt));
poptPrintUsage(pc, stderr, 0);
return 1;
}
}
poptFreeContext(pc);
/* set up things like debug, signals, daemonization, etc. */
debug_log_file = "sssd_pac";
DEBUG_INIT(debug_level, opt_logger);
ret = server_setup("pac", true, 0, uid, gid,
CONFDB_PAC_CONF_ENTRY, &main_ctx, true);
if (ret != EOK) return 2;
ret = die_if_parent_died();
if (ret != EOK) {
/* This is not fatal, don't return */
DEBUG(SSSDBG_OP_FAILURE, "Could not set up to exit when parent process does\n");
}
ret = pac_process_init(main_ctx,
main_ctx->event_ctx,
main_ctx->confdb_ctx);
if (ret != EOK) return 3;
/* loop on main */
server_loop(main_ctx);
return 0;
}
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