ifpsrv.c revision d387c4608dbd3ca056e18e85313ef51aac146fd2
/*
Authors:
Jakub Hrozek <jhrozek@redhat.com>
Copyright (C) 2013 Red Hat
InfoPipe responder: the responder server
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 "sbus/sssd_dbus.h"
#include "monitor/monitor_interfaces.h"
#include "confdb/confdb.h"
#include "responder/ifp/ifp_private.h"
#include "responder/ifp/ifp_domains.h"
#include "responder/common/responder_sbus.h"
#define DEFAULT_ALLOWED_UIDS "0"
struct mon_cli_iface monitor_ifp_methods = {
{ &mon_cli_iface_meta, 0 },
.ping = monitor_common_pong,
.resInit = monitor_common_res_init,
.shutDown = NULL,
.goOffline = NULL,
.resetOffline = NULL,
.rotateLogs = responder_logrotate,
};
static struct data_provider_iface ifp_dp_methods = {
{ &data_provider_iface_meta, 0 },
.RegisterService = NULL,
.pamHandler = NULL,
.sudoHandler = NULL,
.autofsHandler = NULL,
.hostHandler = NULL,
.getDomains = NULL,
.getAccountInfo = NULL,
};
struct infopipe_iface ifp_iface = {
{ &infopipe_iface_meta, 0 },
.Ping = ifp_ping,
.GetUserAttr = ifp_user_get_attr,
.GetUserGroups = ifp_user_get_groups,
.ListDomains = ifp_list_domains,
.FindDomainByName = ifp_find_domain_by_name,
};
struct infopipe_domain ifp_domain = {
{ &infopipe_domain_meta, 0 },
.infopipe_domain_get_name = ifp_dom_get_name,
.infopipe_domain_get_provider = ifp_dom_get_provider,
.infopipe_domain_get_primary_servers = ifp_dom_get_primary_servers,
.infopipe_domain_get_backup_servers = ifp_dom_get_backup_servers,
.infopipe_domain_get_min_id = ifp_dom_get_min_id,
.infopipe_domain_get_max_id = ifp_dom_get_max_id,
.infopipe_domain_get_realm = ifp_dom_get_realm,
.infopipe_domain_get_forest = ifp_dom_get_forest,
.infopipe_domain_get_login_format = ifp_dom_get_login_format,
.infopipe_domain_get_fully_qualified_name_format = ifp_dom_get_fqdn_format,
.infopipe_domain_get_enumerable = ifp_dom_get_enumerable,
.infopipe_domain_get_use_fully_qualified_names = ifp_dom_get_use_fqdn,
.infopipe_domain_get_subdomain = ifp_dom_get_subdomain,
.infopipe_domain_get_parent_domain = ifp_dom_get_parent_domain
};
struct sysbus_iface {
const char *path;
struct sbus_vtable *iface_vtable;
};
static struct sysbus_iface ifp_ifaces[] = {
{ INFOPIPE_PATH, &ifp_iface.vtable },
{ INFOPIPE_DOMAIN_PATH, &ifp_domain.vtable },
{ NULL, NULL },
};
struct sss_cmd_table *get_ifp_cmds(void)
{
static struct sss_cmd_table ifp_cmds[] = {
{ SSS_GET_VERSION, sss_cmd_get_version },
{ SSS_CLI_NULL, NULL}
};
return ifp_cmds;
}
static void ifp_dp_reconnect_init(struct sbus_connection *conn,
int status, void *pvt)
{
struct be_conn *be_conn = talloc_get_type(pvt, struct be_conn);
int ret;
/* Did we reconnect successfully? */
if (status == SBUS_RECONNECT_SUCCESS) {
DEBUG(SSSDBG_TRACE_FUNC, "Reconnected to the Data Provider.\n");
/* Identify ourselves to the data provider */
ret = dp_common_send_id(be_conn->conn,
DATA_PROVIDER_VERSION,
"InfoPipe");
/* all fine */
if (ret == EOK) {
handle_requests_after_reconnect(be_conn->rctx);
return;
}
}
/* Failed to reconnect */
DEBUG(SSSDBG_FATAL_FAILURE, "Could not reconnect to %s provider.\n",
be_conn->domain->name);
}
static errno_t
sysbus_init(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
const char *dbus_name,
struct sysbus_iface *sysbus_ifaces,
void *pvt,
struct sysbus_ctx **sysbus)
{
DBusError dbus_error;
DBusConnection *conn = NULL;
struct sysbus_ctx *system_bus = NULL;
struct sbus_interface *sif;
int i;
errno_t ret;
system_bus = talloc_zero(mem_ctx, struct sysbus_ctx);
if (system_bus == NULL) {
return ENOMEM;
}
dbus_error_init(&dbus_error);
/* Connect to the well-known system bus */
conn = dbus_bus_get(DBUS_BUS_SYSTEM, &dbus_error);
if (conn == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE,
("Failed to connect to D-BUS system bus.\n"));
ret = EIO;
goto fail;
}
dbus_connection_set_exit_on_disconnect(conn, FALSE);
ret = dbus_bus_request_name(conn, dbus_name,
/* We want exclusive access */
DBUS_NAME_FLAG_DO_NOT_QUEUE,
&dbus_error);
if (ret != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) {
/* We were unable to register on the system bus */
DEBUG(SSSDBG_CRIT_FAILURE,
("Unable to request name on the system bus.\n"));
ret = EIO;
goto fail;
}
DEBUG(SSSDBG_TRACE_FUNC, "Listening on %s\n", dbus_name);
/* Integrate with tevent loop */
ret = sbus_init_connection(system_bus, ev, conn,
SBUS_CONN_TYPE_SYSBUS,
&system_bus->conn);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Could not integrate D-BUS into mainloop.\n");
goto fail;
}
for (i = 0; sysbus_ifaces[i].path != NULL; i++) {
sif = sbus_new_interface(system_bus->conn,
sysbus_ifaces[i].path,
sysbus_ifaces[i].iface_vtable,
pvt);
if (sif == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Could not add the sbus interface\n");
goto fail;
}
ret = sbus_conn_add_interface(system_bus->conn, sif);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Could not add the interface\n");
goto fail;
}
}
*sysbus = system_bus;
return EOK;
fail:
if (dbus_error_is_set(&dbus_error)) {
DEBUG(SSSDBG_OP_FAILURE,
"DBus error message: %s\n", dbus_error.message);
dbus_error_free(&dbus_error);
}
if (conn) dbus_connection_unref(conn);
talloc_free(system_bus);
return ret;
}
int ifp_process_init(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct confdb_ctx *cdb)
{
struct resp_ctx *rctx;
struct sss_cmd_table *ifp_cmds;
struct ifp_ctx *ifp_ctx;
struct be_conn *iter;
int ret;
int max_retries;
char *uid_str;
char *attr_list_str;
ifp_cmds = get_ifp_cmds();
ret = sss_process_init(mem_ctx, ev, cdb,
ifp_cmds,
NULL, NULL,
CONFDB_IFP_CONF_ENTRY,
SSS_IFP_SBUS_SERVICE_NAME,
SSS_IFP_SBUS_SERVICE_VERSION,
&monitor_ifp_methods,
"InfoPipe",
&ifp_dp_methods.vtable,
&rctx);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE, "sss_process_init() failed\n");
return ret;
}
ifp_ctx = talloc_zero(rctx, struct ifp_ctx);
if (ifp_ctx == NULL) {
DEBUG(SSSDBG_FATAL_FAILURE, "fatal error initializing ifp_ctx\n");
ret = ENOMEM;
goto fail;
}
ifp_ctx->rctx = rctx;
ifp_ctx->rctx->pvt_ctx = ifp_ctx;
ret = sss_names_init_from_args(ifp_ctx,
"(?P<name>[^@]+)@?(?P<domain>[^@]*$)",
"%1$s@%2$s", &ifp_ctx->snctx);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE, "fatal error initializing regex data\n");
goto fail;
}
ret = confdb_get_string(ifp_ctx->rctx->cdb, ifp_ctx->rctx,
CONFDB_IFP_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(ifp_ctx->rctx, uid_str, true,
&ifp_ctx->rctx->allowed_uids_count,
&ifp_ctx->rctx->allowed_uids);
talloc_free(uid_str);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE, ("Failed to set allowed UIDs.\n"));
goto fail;
}
/* Set up the negative cache */
ret = confdb_get_int(cdb, CONFDB_NSS_CONF_ENTRY,
CONFDB_NSS_ENTRY_NEG_TIMEOUT, 15,
&ifp_ctx->neg_timeout);
if (ret != EOK) {
goto fail;
}
ret = sss_ncache_init(rctx, &ifp_ctx->ncache);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("fatal error initializing negcache\n"));
goto fail;
}
ret = confdb_get_string(ifp_ctx->rctx->cdb, ifp_ctx->rctx,
CONFDB_IFP_CONF_ENTRY, CONFDB_IFP_USER_ATTR_LIST,
NULL, &attr_list_str);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE, ("Failed to get allowed UIDs.\n"));
goto fail;
}
ifp_ctx->user_whitelist = ifp_parse_attr_list(ifp_ctx, attr_list_str);
talloc_free(attr_list_str);
if (ifp_ctx->user_whitelist == NULL) {
DEBUG(SSSDBG_FATAL_FAILURE,
("Failed to parse the allowed attribute list\n"));
goto fail;
}
/* Enable automatic reconnection to the Data Provider */
ret = confdb_get_int(ifp_ctx->rctx->cdb,
CONFDB_IFP_CONF_ENTRY,
CONFDB_SERVICE_RECON_RETRIES,
3, &max_retries);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE,
"Failed to set up automatic reconnection\n");
goto fail;
}
for (iter = ifp_ctx->rctx->be_conns; iter; iter = iter->next) {
sbus_reconnect_init(iter->conn, max_retries,
ifp_dp_reconnect_init, iter);
}
/* Connect to the D-BUS system bus and set up methods */
ret = sysbus_init(ifp_ctx, ifp_ctx->rctx->ev,
INFOPIPE_IFACE,
ifp_ifaces,
ifp_ctx, &ifp_ctx->sysbus);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Failed to connect to the system message bus\n");
talloc_free(ifp_ctx);
return EIO;
}
ret = schedule_get_domains_task(rctx, rctx->ev, rctx);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE,
"schedule_get_domains_tasks failed.\n");
goto fail;
}
DEBUG(SSSDBG_TRACE_FUNC, "InfoPipe Initialization complete\n");
return EOK;
fail:
talloc_free(rctx);
return ret;
}
int main(int argc, const char *argv[])
{
int opt;
poptContext pc;
struct main_context *main_ctx;
int ret;
struct poptOption long_options[] = {
POPT_AUTOHELP
SSSD_MAIN_OPTS
POPT_TABLEEND
};
/* Set debug level to invalid value so we can deside if -d 0 was used. */
debug_level = SSSDBG_INVALID;
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);
DEBUG_INIT(debug_level);
/* set up things like debug, signals, daemonization, etc... */
debug_log_file = "sssd_ifp";
ret = server_setup("sssd[ifp]", 0, CONFDB_IFP_CONF_ENTRY, &main_ctx);
if (ret != EOK) return 2;
ret = die_if_parent_died();
if (ret != EOK) {
/* This is not fatal, don't return */
DEBUG(SSSDBG_MINOR_FAILURE,
"Could not set up to exit when parent process does\n");
}
ret = ifp_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;
}