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/*
Authors:
Jan Cholasta <jcholast@redhat.com>
Copyright (C) 2012 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 <popt.h>
#include "util/util.h"
#include "util/child_common.h"
#include "confdb/confdb.h"
#include "responder/common/responder.h"
#include "responder/ssh/ssh_private.h"
#include "providers/data_provider.h"
#include "sss_iface/sss_iface_async.h"
int ssh_process_init(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct confdb_ctx *cdb)
{
struct resp_ctx *rctx;
struct sss_cmd_table *ssh_cmds;
struct ssh_ctx *ssh_ctx;
int ret;
ssh_cmds = get_ssh_cmds();
ret = sss_process_init(mem_ctx, ev, cdb,
ssh_cmds,
SSS_SSH_SOCKET_NAME, -1, NULL, -1,
CONFDB_SSH_CONF_ENTRY,
SSS_BUS_SSH, SSS_SSH_SBUS_SERVICE_NAME,
sss_connection_setup,
&rctx);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE, "sss_process_init() failed\n");
return ret;
}
ssh_ctx = talloc_zero(rctx, struct ssh_ctx);
if (!ssh_ctx) {
DEBUG(SSSDBG_FATAL_FAILURE, "fatal error initializing ssh_ctx\n");
ret = ENOMEM;
goto fail;
}
ssh_ctx->rctx = rctx;
ssh_ctx->rctx->pvt_ctx = ssh_ctx;
ret = sss_names_init_from_args(ssh_ctx,
SSS_DEFAULT_RE,
"%1$s@%2$s", &ssh_ctx->snctx);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE, "fatal error initializing regex data\n");
goto fail;
}
/* Get responder options */
/* Get ssh_hash_known_hosts option */
ret = confdb_get_bool(ssh_ctx->rctx->cdb,
CONFDB_SSH_CONF_ENTRY, CONFDB_SSH_HASH_KNOWN_HOSTS,
CONFDB_DEFAULT_SSH_HASH_KNOWN_HOSTS,
&ssh_ctx->hash_known_hosts);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE, "Error reading from confdb (%d) [%s]\n",
ret, strerror(ret));
goto fail;
}
/* Get ssh_known_hosts_timeout option */
ret = confdb_get_int(ssh_ctx->rctx->cdb,
CONFDB_SSH_CONF_ENTRY, CONFDB_SSH_KNOWN_HOSTS_TIMEOUT,
CONFDB_DEFAULT_SSH_KNOWN_HOSTS_TIMEOUT,
&ssh_ctx->known_hosts_timeout);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE, "Error reading from confdb (%d) [%s]\n",
ret, strerror(ret));
goto fail;
}
ret = confdb_get_string(ssh_ctx->rctx->cdb, ssh_ctx,
CONFDB_SSH_CONF_ENTRY, CONFDB_SSH_CA_DB,
CONFDB_DEFAULT_SSH_CA_DB, &ssh_ctx->ca_db);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE, "Error reading CA DB from confdb (%d) [%s]\n",
ret, strerror(ret));
goto fail;
}
ret = confdb_get_bool(ssh_ctx->rctx->cdb, CONFDB_SSH_CONF_ENTRY,
CONFDB_SSH_USE_CERT_KEYS,
CONFDB_DEFAULT_SSH_USE_CERT_KEYS,
&ssh_ctx->use_cert_keys);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE,"Error reading option "
CONFDB_SSH_USE_CERT_KEYS
"from confdb (%d) [%s]\n",
ret, strerror(ret));
goto fail;
}
ret = confdb_get_string_as_list(ssh_ctx->rctx->cdb, ssh_ctx,
CONFDB_SSH_CONF_ENTRY,
CONFDB_SSH_USE_CERT_RULES,
&ssh_ctx->cert_rules);
if (ret == ENOENT) {
ssh_ctx->cert_rules = NULL;
} else if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE, "Error reading " CONFDB_SSH_USE_CERT_RULES
" from confdb (%d) [%s].\n", ret,
sss_strerror(ret));
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_SSH,
SSS_SSH_SBUS_SERVICE_NAME,
SSS_SSH_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, "SSH 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_ssh";
DEBUG_INIT(debug_level, opt_logger);
/* server_setup() might switch to an unprivileged user, so the permissions
* for p11_child.log have to be fixed first. We might call p11_child to
* validate certificates. */
ret = chown_debug_file("p11_child", uid, gid);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE,
"Cannot chown the p11_child debug file, "
"debugging might not work!\n");
}
ret = server_setup("ssh", true, 0, uid, gid,
CONFDB_SSH_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 = ssh_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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