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/*
Authors:
Pavel Březina <pbrezina@redhat.com>
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 <unistd.h>
#include <sys/stat.h>
#include "util/util.h"
#include "sbus/sbus.h"
#include "sbus/sbus_opath.h"
#include "sss_iface/sss_iface_async.h"
char *
sss_iface_domain_address(TALLOC_CTX *mem_ctx,
struct sss_domain_info *domain)
{
struct sss_domain_info *head;
/* There is only one bus that belongs to the top level domain. */
head = get_domains_head(domain);
return talloc_asprintf(mem_ctx, SSS_BACKEND_ADDRESS, head->name);
}
char *
sss_iface_domain_bus(TALLOC_CTX *mem_ctx,
struct sss_domain_info *domain)
{
struct sss_domain_info *head;
char *safe_name;
char *bus_name;
/* There is only one bus that belongs to the top level domain. */
head = get_domains_head(domain);
safe_name = sbus_opath_escape(mem_ctx, head->name);
if (safe_name == NULL) {
return NULL;
}
/* Parts of bus names must not start with digit thus we concatenate
* the name with underscore instead of period. */
bus_name = talloc_asprintf(mem_ctx, "sssd.domain_%s", safe_name);
talloc_free(safe_name);
return bus_name;
}
char *
sss_iface_proxy_bus(TALLOC_CTX *mem_ctx,
uint32_t id)
{
/* Parts of bus names must not start with digit thus we concatenate
* the name with underscore instead of period. */
return talloc_asprintf(mem_ctx, "sssd.proxy_%"PRIu32, id);
}
errno_t
sss_iface_connect_address(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
const char *conn_name,
const char *address,
time_t *last_request_time,
struct sbus_connection **_conn)
{
struct sbus_connection *conn;
const char *filename;
errno_t ret;
uid_t check_uid;
gid_t check_gid;
if (address == NULL) {
return EINVAL;
}
filename = strchr(address, '/');
if (filename == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Unexpected dbus address [%s].\n", address);
return EIO;
}
check_uid = geteuid();
check_gid = getegid();
/* Ignore ownership checks when the server runs as root. This is the
* case when privileged monitor is setting up sockets for unprivileged
* responders */
if (check_uid == 0) check_uid = -1;
if (check_gid == 0) check_gid = -1;
ret = check_file(filename, check_uid, check_gid,
S_IFSOCK|S_IRUSR|S_IWUSR, 0, NULL, true);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "check_file failed for [%s].\n", filename);
return EIO;
}
conn = sbus_connect_private(mem_ctx, ev, address,
conn_name, last_request_time);
if (conn == NULL) { /* most probably sbus_dbus_connect_address() failed */
return EFAULT;
}
*_conn = conn;
return EOK;
}
static void
sss_monitor_service_init_done(struct tevent_req *req);
errno_t
sss_monitor_service_init(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
const char *conn_name,
const char *svc_name,
uint16_t svc_version,
uint16_t svc_type,
time_t *last_request_time,
struct sbus_connection **_conn)
{
struct sbus_connection *conn;
struct tevent_req *req;
errno_t ret;
ret = sss_iface_connect_address(mem_ctx, ev, conn_name,
SSS_MONITOR_ADDRESS,
last_request_time, &conn);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Unable to connect to monitor sbus server "
"[%d]: %s\n", ret, sss_strerror(ret));
return ret;
}
req = sbus_call_monitor_RegisterService_send(conn, conn, SSS_BUS_MONITOR,
SSS_BUS_PATH, svc_name,
svc_version, svc_type);
if (req == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, "Unable to create tevent request!\n");
ret = ENOMEM;
goto done;
}
tevent_req_set_callback(req, sss_monitor_service_init_done, conn);
*_conn = conn;
ret = EOK;
done:
if (ret != EOK) {
talloc_free(conn);
}
return ret;
}
static void
sss_monitor_service_init_done(struct tevent_req *req)
{
uint16_t version;
errno_t ret;
ret = sbus_call_monitor_RegisterService_recv(req, &version);
talloc_zfree(req);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Unable to register client in monitor "
"[%d]: %s\n", ret, sss_strerror(ret));
return;
}
DEBUG(SSSDBG_CONF_SETTINGS, "Got id ack and version (%d) from Monitor\n",
version);
}
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