mirror of
https://github.com/samba-team/samba.git
synced 2024-12-24 21:34:56 +03:00
a6c1211504
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15287 Signed-off-by: Pavel Filipenský <pfilipensky@samba.org> Reviewed-by: Andreas Schneider <asn@samba.org>
1731 lines
44 KiB
C
1731 lines
44 KiB
C
/*
|
|
Unix SMB/CIFS implementation.
|
|
|
|
Winbind daemon for ntdom nss module
|
|
|
|
Copyright (C) by Tim Potter 2000-2002
|
|
Copyright (C) Andrew Tridgell 2002
|
|
Copyright (C) Jelmer Vernooij 2003
|
|
Copyright (C) Volker Lendecke 2004
|
|
|
|
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 "includes.h"
|
|
#include "lib/cmdline/cmdline.h"
|
|
#include "winbindd.h"
|
|
#include "nsswitch/winbind_client.h"
|
|
#include "nsswitch/wb_reqtrans.h"
|
|
#include "ntdomain.h"
|
|
#include "librpc/rpc/dcesrv_core.h"
|
|
#include "librpc/gen_ndr/ndr_lsa_scompat.h"
|
|
#include "librpc/gen_ndr/ndr_samr_scompat.h"
|
|
#include "librpc/gen_ndr/ndr_winbind_scompat.h"
|
|
#include "secrets.h"
|
|
#include "rpc_client/cli_netlogon.h"
|
|
#include "idmap.h"
|
|
#include "lib/addrchange.h"
|
|
#include "auth.h"
|
|
#include "messages.h"
|
|
#include "../lib/util/pidfile.h"
|
|
#include "util_cluster.h"
|
|
#include "source4/lib/messaging/irpc.h"
|
|
#include "source4/lib/messaging/messaging.h"
|
|
#include "lib/param/param.h"
|
|
#include "lib/async_req/async_sock.h"
|
|
#include "libsmb/samlogon_cache.h"
|
|
#include "libcli/auth/netlogon_creds_cli.h"
|
|
#include "passdb.h"
|
|
#include "lib/util/tevent_req_profile.h"
|
|
#include "lib/gencache.h"
|
|
#include "rpc_server/rpc_config.h"
|
|
#include "lib/global_contexts.h"
|
|
#include "source3/lib/substitute.h"
|
|
#include "winbindd_traceid.h"
|
|
#include "lib/util/util_process.h"
|
|
|
|
#undef DBGC_CLASS
|
|
#define DBGC_CLASS DBGC_WINBIND
|
|
|
|
#define SCRUB_CLIENTS_INTERVAL 5
|
|
|
|
static bool client_is_idle(struct winbindd_cli_state *state);
|
|
static void remove_client(struct winbindd_cli_state *state);
|
|
|
|
static bool interactive = False;
|
|
|
|
/* Reload configuration */
|
|
|
|
|
|
|
|
static void winbindd_status(void)
|
|
{
|
|
struct winbindd_cli_state *tmp;
|
|
|
|
DEBUG(0, ("winbindd status:\n"));
|
|
|
|
/* Print client state information */
|
|
|
|
DEBUG(0, ("\t%d clients currently active\n", winbindd_num_clients()));
|
|
|
|
if (DEBUGLEVEL >= 2 && winbindd_num_clients()) {
|
|
DEBUG(2, ("\tclient list:\n"));
|
|
for(tmp = winbindd_client_list(); tmp; tmp = tmp->next) {
|
|
DEBUGADD(2, ("\t\tpid %lu, sock %d (%s)\n",
|
|
(unsigned long)tmp->pid, tmp->sock,
|
|
client_is_idle(tmp) ? "idle" : "active"));
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
handle stdin becoming readable when we are in --foreground mode
|
|
*/
|
|
static void winbindd_stdin_handler(struct tevent_context *ev,
|
|
struct tevent_fd *fde,
|
|
uint16_t flags,
|
|
void *private_data)
|
|
{
|
|
char c;
|
|
if (read(0, &c, 1) != 1) {
|
|
bool *is_parent = talloc_get_type_abort(private_data, bool);
|
|
|
|
/* we have reached EOF on stdin, which means the
|
|
parent has exited. Shutdown the server */
|
|
DEBUG(0,("EOF on stdin (is_parent=%d)\n",
|
|
(int)*is_parent));
|
|
winbindd_terminate(*is_parent);
|
|
}
|
|
}
|
|
|
|
bool winbindd_setup_stdin_handler(bool parent, bool foreground)
|
|
{
|
|
bool *is_parent;
|
|
|
|
if (foreground) {
|
|
struct stat st;
|
|
|
|
is_parent = talloc(global_event_context(), bool);
|
|
if (!is_parent) {
|
|
return false;
|
|
}
|
|
|
|
*is_parent = parent;
|
|
|
|
/* if we are running in the foreground then look for
|
|
EOF on stdin, and exit if it happens. This allows
|
|
us to die if the parent process dies
|
|
Only do this on a pipe or socket, no other device.
|
|
*/
|
|
if (fstat(0, &st) != 0) {
|
|
return false;
|
|
}
|
|
if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode)) {
|
|
tevent_add_fd(global_event_context(),
|
|
is_parent,
|
|
0,
|
|
TEVENT_FD_READ,
|
|
winbindd_stdin_handler,
|
|
is_parent);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static void winbindd_sig_chld_handler(struct tevent_context *ev,
|
|
struct tevent_signal *se,
|
|
int signum,
|
|
int count,
|
|
void *siginfo,
|
|
void *private_data)
|
|
{
|
|
pid_t pid;
|
|
|
|
while ((pid = waitpid(-1, NULL, WNOHANG)) > 0) {
|
|
winbind_child_died(pid);
|
|
}
|
|
}
|
|
|
|
static bool winbindd_setup_sig_chld_handler(void)
|
|
{
|
|
struct tevent_signal *se;
|
|
|
|
se = tevent_add_signal(global_event_context(),
|
|
global_event_context(),
|
|
SIGCHLD, 0,
|
|
winbindd_sig_chld_handler,
|
|
NULL);
|
|
if (!se) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static void winbindd_sig_usr2_handler(struct tevent_context *ev,
|
|
struct tevent_signal *se,
|
|
int signum,
|
|
int count,
|
|
void *siginfo,
|
|
void *private_data)
|
|
{
|
|
winbindd_status();
|
|
}
|
|
|
|
static bool winbindd_setup_sig_usr2_handler(void)
|
|
{
|
|
struct tevent_signal *se;
|
|
|
|
se = tevent_add_signal(global_event_context(),
|
|
global_event_context(),
|
|
SIGUSR2, 0,
|
|
winbindd_sig_usr2_handler,
|
|
NULL);
|
|
if (!se) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* React on 'smbcontrol winbindd shutdown' in the same way as on SIGTERM*/
|
|
static void msg_shutdown(struct messaging_context *msg,
|
|
void *private_data,
|
|
uint32_t msg_type,
|
|
struct server_id server_id,
|
|
DATA_BLOB *data)
|
|
{
|
|
/* only the parent waits for this message */
|
|
DEBUG(0,("Got shutdown message\n"));
|
|
winbindd_terminate(true);
|
|
}
|
|
|
|
|
|
static void winbind_msg_validate_cache(struct messaging_context *msg_ctx,
|
|
void *private_data,
|
|
uint32_t msg_type,
|
|
struct server_id server_id,
|
|
DATA_BLOB *data)
|
|
{
|
|
uint8_t ret;
|
|
pid_t child_pid;
|
|
NTSTATUS status;
|
|
|
|
DEBUG(10, ("winbindd_msg_validate_cache: got validate-cache "
|
|
"message.\n"));
|
|
|
|
/*
|
|
* call the validation code from a child:
|
|
* so we don't block the main winbindd and the validation
|
|
* code can safely use fork/waitpid...
|
|
*/
|
|
child_pid = fork();
|
|
|
|
if (child_pid == -1) {
|
|
DEBUG(1, ("winbind_msg_validate_cache: Could not fork: %s\n",
|
|
strerror(errno)));
|
|
return;
|
|
}
|
|
|
|
if (child_pid != 0) {
|
|
/* parent */
|
|
DEBUG(5, ("winbind_msg_validate_cache: child created with "
|
|
"pid %d.\n", (int)child_pid));
|
|
return;
|
|
}
|
|
|
|
/* child */
|
|
|
|
status = winbindd_reinit_after_fork(NULL, NULL);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(1, ("winbindd_reinit_after_fork failed: %s\n",
|
|
nt_errstr(status)));
|
|
_exit(0);
|
|
}
|
|
|
|
/* install default SIGCHLD handler: validation code uses fork/waitpid */
|
|
CatchSignal(SIGCHLD, SIG_DFL);
|
|
|
|
process_set_title("wb: check cache", "validate cache child");
|
|
|
|
ret = (uint8_t)winbindd_validate_cache_nobackup();
|
|
DEBUG(10, ("winbindd_msg_validata_cache: got return value %d\n", ret));
|
|
messaging_send_buf(msg_ctx, server_id, MSG_WINBIND_VALIDATE_CACHE, &ret,
|
|
(size_t)1);
|
|
_exit(0);
|
|
}
|
|
|
|
static struct winbindd_bool_dispatch_table {
|
|
enum winbindd_cmd cmd;
|
|
bool (*fn)(struct winbindd_cli_state *state);
|
|
const char *cmd_name;
|
|
} bool_dispatch_table[] = {
|
|
{ WINBINDD_INTERFACE_VERSION,
|
|
winbindd_interface_version,
|
|
"INTERFACE_VERSION" },
|
|
{ WINBINDD_INFO,
|
|
winbindd_info,
|
|
"INFO" },
|
|
{ WINBINDD_PING,
|
|
winbindd_ping,
|
|
"PING" },
|
|
{ WINBINDD_DOMAIN_NAME,
|
|
winbindd_domain_name,
|
|
"DOMAIN_NAME" },
|
|
{ WINBINDD_NETBIOS_NAME,
|
|
winbindd_netbios_name,
|
|
"NETBIOS_NAME" },
|
|
{ WINBINDD_DC_INFO,
|
|
winbindd_dc_info,
|
|
"DC_INFO" },
|
|
{ WINBINDD_CCACHE_NTLMAUTH,
|
|
winbindd_ccache_ntlm_auth,
|
|
"NTLMAUTH" },
|
|
{ WINBINDD_CCACHE_SAVE,
|
|
winbindd_ccache_save,
|
|
"CCACHE_SAVE" },
|
|
{ WINBINDD_PRIV_PIPE_DIR,
|
|
winbindd_priv_pipe_dir,
|
|
"WINBINDD_PRIV_PIPE_DIR" },
|
|
{ WINBINDD_LIST_TRUSTDOM,
|
|
winbindd_list_trusted_domains,
|
|
"LIST_TRUSTDOM" },
|
|
};
|
|
|
|
struct winbindd_async_dispatch_table {
|
|
enum winbindd_cmd cmd;
|
|
const char *cmd_name;
|
|
struct tevent_req *(*send_req)(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct winbindd_cli_state *cli,
|
|
struct winbindd_request *request);
|
|
NTSTATUS (*recv_req)(struct tevent_req *req,
|
|
struct winbindd_response *presp);
|
|
};
|
|
|
|
static struct winbindd_async_dispatch_table async_nonpriv_table[] = {
|
|
{ WINBINDD_LOOKUPSID, "LOOKUPSID",
|
|
winbindd_lookupsid_send, winbindd_lookupsid_recv },
|
|
{ WINBINDD_LOOKUPSIDS, "LOOKUPSIDS",
|
|
winbindd_lookupsids_send, winbindd_lookupsids_recv },
|
|
{ WINBINDD_LOOKUPNAME, "LOOKUPNAME",
|
|
winbindd_lookupname_send, winbindd_lookupname_recv },
|
|
{ WINBINDD_SIDS_TO_XIDS, "SIDS_TO_XIDS",
|
|
winbindd_sids_to_xids_send, winbindd_sids_to_xids_recv },
|
|
{ WINBINDD_XIDS_TO_SIDS, "XIDS_TO_SIDS",
|
|
winbindd_xids_to_sids_send, winbindd_xids_to_sids_recv },
|
|
{ WINBINDD_GETPWSID, "GETPWSID",
|
|
winbindd_getpwsid_send, winbindd_getpwsid_recv },
|
|
{ WINBINDD_GETPWNAM, "GETPWNAM",
|
|
winbindd_getpwnam_send, winbindd_getpwnam_recv },
|
|
{ WINBINDD_GETPWUID, "GETPWUID",
|
|
winbindd_getpwuid_send, winbindd_getpwuid_recv },
|
|
{ WINBINDD_GETSIDALIASES, "GETSIDALIASES",
|
|
winbindd_getsidaliases_send, winbindd_getsidaliases_recv },
|
|
{ WINBINDD_GETUSERDOMGROUPS, "GETUSERDOMGROUPS",
|
|
winbindd_getuserdomgroups_send, winbindd_getuserdomgroups_recv },
|
|
{ WINBINDD_GETGROUPS, "GETGROUPS",
|
|
winbindd_getgroups_send, winbindd_getgroups_recv },
|
|
{ WINBINDD_SHOW_SEQUENCE, "SHOW_SEQUENCE",
|
|
winbindd_show_sequence_send, winbindd_show_sequence_recv },
|
|
{ WINBINDD_GETGRGID, "GETGRGID",
|
|
winbindd_getgrgid_send, winbindd_getgrgid_recv },
|
|
{ WINBINDD_GETGRNAM, "GETGRNAM",
|
|
winbindd_getgrnam_send, winbindd_getgrnam_recv },
|
|
{ WINBINDD_GETUSERSIDS, "GETUSERSIDS",
|
|
winbindd_getusersids_send, winbindd_getusersids_recv },
|
|
{ WINBINDD_LOOKUPRIDS, "LOOKUPRIDS",
|
|
winbindd_lookuprids_send, winbindd_lookuprids_recv },
|
|
{ WINBINDD_SETPWENT, "SETPWENT",
|
|
winbindd_setpwent_send, winbindd_setpwent_recv },
|
|
{ WINBINDD_GETPWENT, "GETPWENT",
|
|
winbindd_getpwent_send, winbindd_getpwent_recv },
|
|
{ WINBINDD_ENDPWENT, "ENDPWENT",
|
|
winbindd_endpwent_send, winbindd_endpwent_recv },
|
|
{ WINBINDD_DSGETDCNAME, "DSGETDCNAME",
|
|
winbindd_dsgetdcname_send, winbindd_dsgetdcname_recv },
|
|
{ WINBINDD_GETDCNAME, "GETDCNAME",
|
|
winbindd_getdcname_send, winbindd_getdcname_recv },
|
|
{ WINBINDD_SETGRENT, "SETGRENT",
|
|
winbindd_setgrent_send, winbindd_setgrent_recv },
|
|
{ WINBINDD_GETGRENT, "GETGRENT",
|
|
winbindd_getgrent_send, winbindd_getgrent_recv },
|
|
{ WINBINDD_ENDGRENT, "ENDGRENT",
|
|
winbindd_endgrent_send, winbindd_endgrent_recv },
|
|
{ WINBINDD_LIST_USERS, "LIST_USERS",
|
|
winbindd_list_users_send, winbindd_list_users_recv },
|
|
{ WINBINDD_LIST_GROUPS, "LIST_GROUPS",
|
|
winbindd_list_groups_send, winbindd_list_groups_recv },
|
|
{ WINBINDD_CHECK_MACHACC, "CHECK_MACHACC",
|
|
winbindd_check_machine_acct_send, winbindd_check_machine_acct_recv },
|
|
{ WINBINDD_PING_DC, "PING_DC",
|
|
winbindd_ping_dc_send, winbindd_ping_dc_recv },
|
|
{ WINBINDD_PAM_AUTH, "PAM_AUTH",
|
|
winbindd_pam_auth_send, winbindd_pam_auth_recv },
|
|
{ WINBINDD_PAM_LOGOFF, "PAM_LOGOFF",
|
|
winbindd_pam_logoff_send, winbindd_pam_logoff_recv },
|
|
{ WINBINDD_PAM_CHAUTHTOK, "PAM_CHAUTHTOK",
|
|
winbindd_pam_chauthtok_send, winbindd_pam_chauthtok_recv },
|
|
{ WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, "PAM_CHNG_PSWD_AUTH_CRAP",
|
|
winbindd_pam_chng_pswd_auth_crap_send,
|
|
winbindd_pam_chng_pswd_auth_crap_recv },
|
|
{ WINBINDD_WINS_BYIP, "WINS_BYIP",
|
|
winbindd_wins_byip_send, winbindd_wins_byip_recv },
|
|
{ WINBINDD_WINS_BYNAME, "WINS_BYNAME",
|
|
winbindd_wins_byname_send, winbindd_wins_byname_recv },
|
|
{ WINBINDD_DOMAIN_INFO, "DOMAIN_INFO",
|
|
winbindd_domain_info_send, winbindd_domain_info_recv },
|
|
|
|
{ 0, NULL, NULL, NULL }
|
|
};
|
|
|
|
static struct winbindd_async_dispatch_table async_priv_table[] = {
|
|
{ WINBINDD_ALLOCATE_UID, "ALLOCATE_UID",
|
|
winbindd_allocate_uid_send, winbindd_allocate_uid_recv },
|
|
{ WINBINDD_ALLOCATE_GID, "ALLOCATE_GID",
|
|
winbindd_allocate_gid_send, winbindd_allocate_gid_recv },
|
|
{ WINBINDD_CHANGE_MACHACC, "CHANGE_MACHACC",
|
|
winbindd_change_machine_acct_send, winbindd_change_machine_acct_recv },
|
|
{ WINBINDD_PAM_AUTH_CRAP, "PAM_AUTH_CRAP",
|
|
winbindd_pam_auth_crap_send, winbindd_pam_auth_crap_recv },
|
|
|
|
{ 0, NULL, NULL, NULL }
|
|
};
|
|
|
|
struct process_request_state {
|
|
struct winbindd_cli_state *cli_state;
|
|
struct tevent_context *ev;
|
|
};
|
|
|
|
static void process_request_done(struct tevent_req *subreq);
|
|
static void process_request_written(struct tevent_req *subreq);
|
|
|
|
static struct tevent_req *process_request_send(
|
|
TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct winbindd_cli_state *cli_state)
|
|
{
|
|
struct tevent_req *req, *subreq;
|
|
struct process_request_state *state;
|
|
struct winbindd_async_dispatch_table *atable;
|
|
enum winbindd_cmd cmd = cli_state->request->cmd;
|
|
size_t i;
|
|
bool ok;
|
|
static uint64_t request_index = 1;
|
|
|
|
/*
|
|
* debug traceid values:
|
|
* 0 .. inactive
|
|
* 1 .. not processing a winbind request, but in other code (timers)
|
|
* >=2 .. winbind request processing
|
|
*/
|
|
if (debug_traceid_get() != 0) {
|
|
request_index = ++request_index == 0 ? 2 : request_index;
|
|
debug_traceid_set(request_index);
|
|
}
|
|
req = tevent_req_create(mem_ctx, &state,
|
|
struct process_request_state);
|
|
if (req == NULL) {
|
|
return NULL;
|
|
}
|
|
tevent_thread_call_depth_start(req);
|
|
state->cli_state = cli_state;
|
|
state->ev = ev;
|
|
|
|
ok = tevent_req_set_profile(req);
|
|
if (!ok) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
SMB_ASSERT(cli_state->mem_ctx == NULL);
|
|
cli_state->mem_ctx = talloc_named(cli_state, 0, "winbind request");
|
|
if (tevent_req_nomem(cli_state->mem_ctx, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
|
|
cli_state->response = talloc_zero(
|
|
cli_state->mem_ctx,
|
|
struct winbindd_response);
|
|
if (tevent_req_nomem(cli_state->response, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
cli_state->response->result = WINBINDD_PENDING;
|
|
cli_state->response->length = sizeof(struct winbindd_response);
|
|
|
|
/* Remember who asked us. */
|
|
cli_state->pid = cli_state->request->pid;
|
|
memcpy(cli_state->client_name,
|
|
cli_state->request->client_name,
|
|
sizeof(cli_state->client_name));
|
|
|
|
cli_state->cmd_name = "unknown request";
|
|
cli_state->recv_fn = NULL;
|
|
|
|
/* client is newest */
|
|
winbindd_promote_client(cli_state);
|
|
|
|
for (atable = async_nonpriv_table; atable->send_req; atable += 1) {
|
|
if (cmd == atable->cmd) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ((atable->send_req == NULL) && cli_state->privileged) {
|
|
for (atable = async_priv_table; atable->send_req;
|
|
atable += 1) {
|
|
if (cmd == atable->cmd) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (atable->send_req != NULL) {
|
|
cli_state->cmd_name = atable->cmd_name;
|
|
cli_state->recv_fn = atable->recv_req;
|
|
|
|
DBG_NOTICE("[%s (%d)] Handling async request: %s\n",
|
|
cli_state->client_name,
|
|
(int)cli_state->pid,
|
|
cli_state->cmd_name);
|
|
|
|
subreq = atable->send_req(
|
|
state,
|
|
state->ev,
|
|
cli_state,
|
|
cli_state->request);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, process_request_done, req);
|
|
return req;
|
|
}
|
|
|
|
for (i=0; i<ARRAY_SIZE(bool_dispatch_table); i++) {
|
|
if (cmd == bool_dispatch_table[i].cmd) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
ok = false;
|
|
|
|
if (i < ARRAY_SIZE(bool_dispatch_table)) {
|
|
cli_state->cmd_name = bool_dispatch_table[i].cmd_name;
|
|
|
|
DBG_DEBUG("process_request: request fn %s\n",
|
|
bool_dispatch_table[i].cmd_name);
|
|
ok = bool_dispatch_table[i].fn(cli_state);
|
|
}
|
|
|
|
cli_state->response->result = ok ? WINBINDD_OK : WINBINDD_ERROR;
|
|
|
|
TALLOC_FREE(cli_state->io_req);
|
|
TALLOC_FREE(cli_state->request);
|
|
|
|
subreq = wb_resp_write_send(
|
|
state,
|
|
state->ev,
|
|
cli_state->out_queue,
|
|
cli_state->sock,
|
|
cli_state->response);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return tevent_req_post(req, ev);
|
|
}
|
|
tevent_req_set_callback(subreq, process_request_written, req);
|
|
|
|
cli_state->io_req = subreq;
|
|
|
|
return req;
|
|
}
|
|
|
|
static void process_request_done(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct process_request_state *state = tevent_req_data(
|
|
req, struct process_request_state);
|
|
struct winbindd_cli_state *cli_state = state->cli_state;
|
|
NTSTATUS status;
|
|
bool ok;
|
|
|
|
status = cli_state->recv_fn(subreq, cli_state->response);
|
|
TALLOC_FREE(subreq);
|
|
|
|
DBG_NOTICE("[%s(%d):%s]: %s\n",
|
|
cli_state->client_name,
|
|
(int)cli_state->pid,
|
|
cli_state->cmd_name,
|
|
nt_errstr(status));
|
|
|
|
ok = NT_STATUS_IS_OK(status);
|
|
cli_state->response->result = ok ? WINBINDD_OK : WINBINDD_ERROR;
|
|
|
|
TALLOC_FREE(cli_state->io_req);
|
|
TALLOC_FREE(cli_state->request);
|
|
|
|
subreq = wb_resp_write_send(
|
|
state,
|
|
state->ev,
|
|
cli_state->out_queue,
|
|
cli_state->sock,
|
|
cli_state->response);
|
|
if (tevent_req_nomem(subreq, req)) {
|
|
return;
|
|
}
|
|
tevent_req_set_callback(subreq, process_request_written, req);
|
|
|
|
cli_state->io_req = subreq;
|
|
}
|
|
|
|
static void process_request_written(struct tevent_req *subreq)
|
|
{
|
|
struct tevent_req *req = tevent_req_callback_data(
|
|
subreq, struct tevent_req);
|
|
struct process_request_state *state = tevent_req_data(
|
|
req, struct process_request_state);
|
|
struct winbindd_cli_state *cli_state = state->cli_state;
|
|
ssize_t ret;
|
|
int err;
|
|
|
|
cli_state->io_req = NULL;
|
|
|
|
ret = wb_resp_write_recv(subreq, &err);
|
|
TALLOC_FREE(subreq);
|
|
if (ret == -1) {
|
|
tevent_req_nterror(req, map_nt_error_from_unix(err));
|
|
return;
|
|
}
|
|
|
|
DBG_DEBUG("[%s(%d):%s]: delivered response to client\n",
|
|
cli_state->client_name,
|
|
(int)cli_state->pid,
|
|
cli_state->cmd_name);
|
|
|
|
TALLOC_FREE(cli_state->mem_ctx);
|
|
cli_state->response = NULL;
|
|
cli_state->cmd_name = "no request";
|
|
cli_state->recv_fn = NULL;
|
|
|
|
tevent_req_done(req);
|
|
}
|
|
|
|
static NTSTATUS process_request_recv(
|
|
struct tevent_req *req,
|
|
TALLOC_CTX *mem_ctx,
|
|
struct tevent_req_profile **profile)
|
|
{
|
|
NTSTATUS status;
|
|
|
|
if (tevent_req_is_nterror(req, &status)) {
|
|
tevent_req_received(req);
|
|
return status;
|
|
}
|
|
|
|
*profile = tevent_req_move_profile(req, mem_ctx);
|
|
tevent_req_received(req);
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
/*
|
|
* This is the main event loop of winbind requests. It goes through a
|
|
* state-machine of 3 read/write requests, 4 if you have extra data to send.
|
|
*
|
|
* An idle winbind client has a read request of 4 bytes outstanding,
|
|
* finalizing function is request_len_recv, checking the length. request_recv
|
|
* then processes the packet. The processing function then at some point has
|
|
* to call request_finished which schedules sending the response.
|
|
*/
|
|
|
|
static void winbind_client_request_read(struct tevent_req *req);
|
|
static void winbind_client_activity(struct tevent_req *req);
|
|
static void winbind_client_processed(struct tevent_req *req);
|
|
|
|
/* Process a new connection by adding it to the client connection list */
|
|
|
|
static void new_connection(int listen_sock, bool privileged)
|
|
{
|
|
struct sockaddr_un sunaddr;
|
|
struct winbindd_cli_state *state;
|
|
struct tevent_req *req;
|
|
socklen_t len;
|
|
int sock;
|
|
|
|
/* Accept connection */
|
|
|
|
len = sizeof(sunaddr);
|
|
|
|
sock = accept(listen_sock, (struct sockaddr *)(void *)&sunaddr, &len);
|
|
|
|
if (sock == -1) {
|
|
if (errno != EINTR) {
|
|
D_ERR("Failed to accept socket: %s\n", strerror(errno));
|
|
}
|
|
return;
|
|
}
|
|
smb_set_close_on_exec(sock);
|
|
|
|
D_INFO("Accepted client socket %d\n", sock);
|
|
|
|
/* Create new connection structure */
|
|
|
|
if ((state = talloc_zero(NULL, struct winbindd_cli_state)) == NULL) {
|
|
close(sock);
|
|
return;
|
|
}
|
|
|
|
state->sock = sock;
|
|
|
|
state->out_queue = tevent_queue_create(state, "winbind client reply");
|
|
if (state->out_queue == NULL) {
|
|
close(sock);
|
|
TALLOC_FREE(state);
|
|
return;
|
|
}
|
|
|
|
state->privileged = privileged;
|
|
|
|
req = wb_req_read_send(state, global_event_context(), state->sock,
|
|
WINBINDD_MAX_EXTRA_DATA);
|
|
if (req == NULL) {
|
|
TALLOC_FREE(state);
|
|
close(sock);
|
|
return;
|
|
}
|
|
tevent_req_set_callback(req, winbind_client_request_read, state);
|
|
state->io_req = req;
|
|
|
|
/* Add to connection list */
|
|
|
|
winbindd_add_client(state);
|
|
}
|
|
|
|
static void winbind_client_request_read(struct tevent_req *req)
|
|
{
|
|
struct winbindd_cli_state *state = tevent_req_callback_data(
|
|
req, struct winbindd_cli_state);
|
|
ssize_t ret;
|
|
int err;
|
|
|
|
state->io_req = NULL;
|
|
|
|
ret = wb_req_read_recv(req, state, &state->request, &err);
|
|
TALLOC_FREE(req);
|
|
if (ret == -1) {
|
|
if (err == EPIPE) {
|
|
DEBUG(6, ("closing socket %d, client exited\n",
|
|
state->sock));
|
|
} else {
|
|
DEBUG(2, ("Could not read client request from fd %d: "
|
|
"%s\n", state->sock, strerror(err)));
|
|
}
|
|
close(state->sock);
|
|
state->sock = -1;
|
|
remove_client(state);
|
|
return;
|
|
}
|
|
|
|
req = wait_for_read_send(state, global_event_context(), state->sock,
|
|
true);
|
|
if (req == NULL) {
|
|
DEBUG(0, ("winbind_client_request_read[%d:%s]:"
|
|
" wait_for_read_send failed - removing client\n",
|
|
(int)state->pid, state->cmd_name));
|
|
remove_client(state);
|
|
return;
|
|
}
|
|
tevent_req_set_callback(req, winbind_client_activity, state);
|
|
state->io_req = req;
|
|
|
|
req = process_request_send(state, global_event_context(), state);
|
|
if (req == NULL) {
|
|
DBG_ERR("process_request_send failed\n");
|
|
remove_client(state);
|
|
return;
|
|
}
|
|
tevent_req_set_callback(req, winbind_client_processed, state);
|
|
}
|
|
|
|
static void winbind_client_activity(struct tevent_req *req)
|
|
{
|
|
struct winbindd_cli_state *state =
|
|
tevent_req_callback_data(req, struct winbindd_cli_state);
|
|
int err;
|
|
bool has_data;
|
|
|
|
has_data = wait_for_read_recv(req, &err);
|
|
|
|
if (has_data) {
|
|
DEBUG(0, ("winbind_client_activity[%d:%s]:"
|
|
"unexpected data from client - removing client\n",
|
|
(int)state->pid, state->cmd_name));
|
|
} else {
|
|
if (err == EPIPE) {
|
|
DEBUG(6, ("winbind_client_activity[%d:%s]: "
|
|
"client has closed connection - removing "
|
|
"client\n",
|
|
(int)state->pid, state->cmd_name));
|
|
} else {
|
|
DEBUG(2, ("winbind_client_activity[%d:%s]: "
|
|
"client socket error (%s) - removing "
|
|
"client\n",
|
|
(int)state->pid, state->cmd_name,
|
|
strerror(err)));
|
|
}
|
|
}
|
|
|
|
remove_client(state);
|
|
}
|
|
|
|
static void winbind_client_processed(struct tevent_req *req)
|
|
{
|
|
struct winbindd_cli_state *cli_state = tevent_req_callback_data(
|
|
req, struct winbindd_cli_state);
|
|
struct tevent_req_profile *profile = NULL;
|
|
struct timeval start, stop, diff;
|
|
int threshold;
|
|
NTSTATUS status;
|
|
|
|
status = process_request_recv(req, cli_state, &profile);
|
|
TALLOC_FREE(req);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_DEBUG("process_request failed: %s\n", nt_errstr(status));
|
|
remove_client(cli_state);
|
|
return;
|
|
}
|
|
|
|
tevent_req_profile_get_start(profile, NULL, &start);
|
|
tevent_req_profile_get_stop(profile, NULL, &stop);
|
|
diff = tevent_timeval_until(&start, &stop);
|
|
|
|
threshold = lp_parm_int(-1, "winbind", "request profile threshold", 60);
|
|
|
|
if (diff.tv_sec >= threshold) {
|
|
int depth;
|
|
char *str;
|
|
|
|
depth = lp_parm_int(
|
|
-1,
|
|
"winbind",
|
|
"request profile depth",
|
|
INT_MAX);
|
|
|
|
DBG_ERR("request took %u.%.6u seconds\n",
|
|
(unsigned)diff.tv_sec, (unsigned)diff.tv_usec);
|
|
|
|
str = tevent_req_profile_string(
|
|
talloc_tos(), profile, 0, depth);
|
|
if (str != NULL) {
|
|
/* No "\n", already contained in "str" */
|
|
DEBUGADD(0, ("%s", str));
|
|
}
|
|
TALLOC_FREE(str);
|
|
}
|
|
|
|
TALLOC_FREE(profile);
|
|
|
|
req = wb_req_read_send(
|
|
cli_state,
|
|
global_event_context(),
|
|
cli_state->sock,
|
|
WINBINDD_MAX_EXTRA_DATA);
|
|
if (req == NULL) {
|
|
remove_client(cli_state);
|
|
return;
|
|
}
|
|
tevent_req_set_callback(req, winbind_client_request_read, cli_state);
|
|
cli_state->io_req = req;
|
|
}
|
|
|
|
/* Remove a client connection from client connection list */
|
|
|
|
static void remove_client(struct winbindd_cli_state *state)
|
|
{
|
|
/* It's a dead client - hold a funeral */
|
|
|
|
if (state == NULL) {
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* We need to remove a pending wb_req_read_*
|
|
* or wb_resp_write_* request before closing the
|
|
* socket.
|
|
*
|
|
* This is important as they might have used tevent_add_fd() and we
|
|
* use the epoll * backend on linux. So we must remove the tevent_fd
|
|
* before closing the fd.
|
|
*
|
|
* Otherwise we might hit a race with close_conns_after_fork() (via
|
|
* winbindd_reinit_after_fork()) where a file descriptor
|
|
* is still open in a child, which means it's still active in
|
|
* the parents epoll queue, but the related tevent_fd is already
|
|
* already gone in the parent.
|
|
*
|
|
* See bug #11141.
|
|
*/
|
|
TALLOC_FREE(state->io_req);
|
|
|
|
if (state->sock != -1) {
|
|
char c = 0;
|
|
int nwritten;
|
|
|
|
/* tell client, we are closing ... */
|
|
nwritten = write(state->sock, &c, sizeof(c));
|
|
if (nwritten == -1) {
|
|
DEBUG(2, ("final write to client failed: %s\n",
|
|
strerror(errno)));
|
|
}
|
|
|
|
/* Close socket */
|
|
|
|
close(state->sock);
|
|
state->sock = -1;
|
|
}
|
|
|
|
TALLOC_FREE(state->mem_ctx);
|
|
|
|
/* Remove from list and free */
|
|
|
|
winbindd_remove_client(state);
|
|
TALLOC_FREE(state);
|
|
}
|
|
|
|
/* Is a client idle? */
|
|
|
|
static bool client_is_idle(struct winbindd_cli_state *state) {
|
|
return (state->request == NULL &&
|
|
state->response == NULL &&
|
|
!state->pwent_state && !state->grent_state);
|
|
}
|
|
|
|
/* Shutdown client connection which has been idle for the longest time */
|
|
|
|
static bool remove_idle_client(void)
|
|
{
|
|
struct winbindd_cli_state *state, *remove_state = NULL;
|
|
int nidle = 0;
|
|
|
|
for (state = winbindd_client_list(); state; state = state->next) {
|
|
if (client_is_idle(state)) {
|
|
nidle++;
|
|
/* list is sorted by access time */
|
|
remove_state = state;
|
|
}
|
|
}
|
|
|
|
if (remove_state) {
|
|
DEBUG(5,("Found %d idle client connections, shutting down sock %d, pid %u\n",
|
|
nidle, remove_state->sock, (unsigned int)remove_state->pid));
|
|
remove_client(remove_state);
|
|
return True;
|
|
}
|
|
|
|
return False;
|
|
}
|
|
|
|
/*
|
|
* Terminate all clients whose requests have taken longer than
|
|
* "winbind request timeout" seconds to process, or have been
|
|
* idle for more than "winbind request timeout" seconds.
|
|
*/
|
|
|
|
static void remove_timed_out_clients(void)
|
|
{
|
|
struct winbindd_cli_state *state, *prev = NULL;
|
|
time_t curr_time = time(NULL);
|
|
int timeout_val = lp_winbind_request_timeout();
|
|
|
|
for (state = winbindd_client_list_tail(); state; state = prev) {
|
|
time_t expiry_time;
|
|
|
|
prev = winbindd_client_list_prev(state);
|
|
expiry_time = state->last_access + timeout_val;
|
|
|
|
if (curr_time <= expiry_time) {
|
|
/* list is sorted, previous clients in
|
|
list are newer */
|
|
break;
|
|
}
|
|
|
|
if (client_is_idle(state)) {
|
|
DEBUG(5,("Idle client timed out, "
|
|
"shutting down sock %d, pid %u\n",
|
|
state->sock,
|
|
(unsigned int)state->pid));
|
|
} else {
|
|
DEBUG(5,("Client request timed out, "
|
|
"shutting down sock %d, pid %u\n",
|
|
state->sock,
|
|
(unsigned int)state->pid));
|
|
}
|
|
|
|
remove_client(state);
|
|
}
|
|
}
|
|
|
|
static void winbindd_scrub_clients_handler(struct tevent_context *ev,
|
|
struct tevent_timer *te,
|
|
struct timeval current_time,
|
|
void *private_data)
|
|
{
|
|
remove_timed_out_clients();
|
|
if (tevent_add_timer(ev, ev,
|
|
timeval_current_ofs(SCRUB_CLIENTS_INTERVAL, 0),
|
|
winbindd_scrub_clients_handler, NULL) == NULL) {
|
|
DEBUG(0, ("winbindd: failed to reschedule client scrubber\n"));
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
struct winbindd_listen_state {
|
|
bool privileged;
|
|
int fd;
|
|
};
|
|
|
|
static void winbindd_listen_fde_handler(struct tevent_context *ev,
|
|
struct tevent_fd *fde,
|
|
uint16_t flags,
|
|
void *private_data)
|
|
{
|
|
struct winbindd_listen_state *s = talloc_get_type_abort(private_data,
|
|
struct winbindd_listen_state);
|
|
|
|
while (winbindd_num_clients() > lp_winbind_max_clients() - 1) {
|
|
DEBUG(5,("winbindd: Exceeding %d client "
|
|
"connections, removing idle "
|
|
"connection.\n", lp_winbind_max_clients()));
|
|
if (!remove_idle_client()) {
|
|
DEBUG(0,("winbindd: Exceeding %d "
|
|
"client connections, no idle "
|
|
"connection found\n",
|
|
lp_winbind_max_clients()));
|
|
break;
|
|
}
|
|
}
|
|
remove_timed_out_clients();
|
|
new_connection(s->fd, s->privileged);
|
|
}
|
|
|
|
/*
|
|
* Winbindd socket accessor functions
|
|
*/
|
|
|
|
static bool winbindd_setup_listeners(void)
|
|
{
|
|
struct winbindd_listen_state *pub_state = NULL;
|
|
struct winbindd_listen_state *priv_state = NULL;
|
|
struct tevent_fd *fde;
|
|
int rc;
|
|
char *socket_path;
|
|
|
|
pub_state = talloc(global_event_context(),
|
|
struct winbindd_listen_state);
|
|
if (!pub_state) {
|
|
goto failed;
|
|
}
|
|
|
|
pub_state->privileged = false;
|
|
pub_state->fd = create_pipe_sock(
|
|
lp_winbindd_socket_directory(), WINBINDD_SOCKET_NAME, 0755);
|
|
if (pub_state->fd == -1) {
|
|
goto failed;
|
|
}
|
|
rc = listen(pub_state->fd, 5);
|
|
if (rc < 0) {
|
|
goto failed;
|
|
}
|
|
|
|
fde = tevent_add_fd(global_event_context(), pub_state, pub_state->fd,
|
|
TEVENT_FD_READ, winbindd_listen_fde_handler,
|
|
pub_state);
|
|
if (fde == NULL) {
|
|
close(pub_state->fd);
|
|
goto failed;
|
|
}
|
|
tevent_fd_set_auto_close(fde);
|
|
|
|
priv_state = talloc(global_event_context(),
|
|
struct winbindd_listen_state);
|
|
if (!priv_state) {
|
|
goto failed;
|
|
}
|
|
|
|
socket_path = get_winbind_priv_pipe_dir();
|
|
if (socket_path == NULL) {
|
|
goto failed;
|
|
}
|
|
|
|
priv_state->privileged = true;
|
|
priv_state->fd = create_pipe_sock(
|
|
socket_path, WINBINDD_SOCKET_NAME, 0750);
|
|
TALLOC_FREE(socket_path);
|
|
if (priv_state->fd == -1) {
|
|
goto failed;
|
|
}
|
|
rc = listen(priv_state->fd, 5);
|
|
if (rc < 0) {
|
|
goto failed;
|
|
}
|
|
|
|
fde = tevent_add_fd(global_event_context(), priv_state,
|
|
priv_state->fd, TEVENT_FD_READ,
|
|
winbindd_listen_fde_handler, priv_state);
|
|
if (fde == NULL) {
|
|
close(priv_state->fd);
|
|
goto failed;
|
|
}
|
|
tevent_fd_set_auto_close(fde);
|
|
|
|
winbindd_scrub_clients_handler(global_event_context(), NULL,
|
|
timeval_current(), NULL);
|
|
return true;
|
|
failed:
|
|
TALLOC_FREE(pub_state);
|
|
TALLOC_FREE(priv_state);
|
|
return false;
|
|
}
|
|
|
|
static void winbindd_register_handlers(struct messaging_context *msg_ctx,
|
|
bool foreground)
|
|
{
|
|
bool scan_trusts = true;
|
|
NTSTATUS status;
|
|
struct tevent_timer *te = NULL;
|
|
|
|
/* Setup signal handlers */
|
|
|
|
if (!winbindd_setup_sig_term_handler(true))
|
|
exit(1);
|
|
if (!winbindd_setup_stdin_handler(true, foreground))
|
|
exit(1);
|
|
if (!winbindd_setup_sig_hup_handler(NULL))
|
|
exit(1);
|
|
if (!winbindd_setup_sig_chld_handler())
|
|
exit(1);
|
|
if (!winbindd_setup_sig_usr2_handler())
|
|
exit(1);
|
|
|
|
CatchSignal(SIGPIPE, SIG_IGN); /* Ignore sigpipe */
|
|
|
|
/*
|
|
* Ensure all cache and idmap caches are consistent
|
|
* and initialized before we startup.
|
|
*/
|
|
if (!winbindd_cache_validate_and_initialize()) {
|
|
exit(1);
|
|
}
|
|
|
|
/* React on 'smbcontrol winbindd reload-config' in the same way
|
|
as to SIGHUP signal */
|
|
messaging_register(msg_ctx, NULL,
|
|
MSG_SMB_CONF_UPDATED,
|
|
winbindd_msg_reload_services_parent);
|
|
messaging_register(msg_ctx, NULL,
|
|
MSG_SHUTDOWN, msg_shutdown);
|
|
|
|
/* Handle online/offline messages. */
|
|
messaging_register(msg_ctx, NULL,
|
|
MSG_WINBIND_OFFLINE, winbind_msg_offline);
|
|
messaging_register(msg_ctx, NULL,
|
|
MSG_WINBIND_ONLINE, winbind_msg_online);
|
|
messaging_register(msg_ctx, NULL,
|
|
MSG_WINBIND_ONLINESTATUS, winbind_msg_onlinestatus);
|
|
|
|
/* Handle domain online/offline messages for domains */
|
|
messaging_register(global_messaging_context(), NULL,
|
|
MSG_WINBIND_DOMAIN_OFFLINE, winbind_msg_domain_offline);
|
|
messaging_register(global_messaging_context(), NULL,
|
|
MSG_WINBIND_DOMAIN_ONLINE, winbind_msg_domain_online);
|
|
|
|
messaging_register(msg_ctx, NULL,
|
|
MSG_WINBIND_VALIDATE_CACHE,
|
|
winbind_msg_validate_cache);
|
|
|
|
messaging_register(msg_ctx, NULL,
|
|
MSG_WINBIND_DUMP_DOMAIN_LIST,
|
|
winbind_msg_dump_domain_list);
|
|
|
|
messaging_register(msg_ctx, NULL,
|
|
MSG_WINBIND_IP_DROPPED,
|
|
winbind_msg_ip_dropped_parent);
|
|
|
|
/* Register handler for MSG_DEBUG. */
|
|
messaging_register(msg_ctx, NULL,
|
|
MSG_DEBUG,
|
|
winbind_msg_debug);
|
|
|
|
messaging_register(msg_ctx, NULL,
|
|
MSG_WINBIND_DISCONNECT_DC,
|
|
winbind_disconnect_dc_parent);
|
|
|
|
netsamlogon_cache_init(); /* Non-critical */
|
|
|
|
/* clear the cached list of trusted domains */
|
|
|
|
wcache_tdc_clear();
|
|
|
|
if (!init_domain_list()) {
|
|
DEBUG(0,("unable to initialize domain list\n"));
|
|
exit(1);
|
|
}
|
|
|
|
init_idmap_child();
|
|
init_locator_child();
|
|
|
|
smb_nscd_flush_user_cache();
|
|
smb_nscd_flush_group_cache();
|
|
|
|
if (!lp_winbind_scan_trusted_domains()) {
|
|
scan_trusts = false;
|
|
}
|
|
|
|
if (!lp_allow_trusted_domains()) {
|
|
scan_trusts = false;
|
|
}
|
|
|
|
if (IS_DC) {
|
|
scan_trusts = false;
|
|
}
|
|
|
|
if (scan_trusts) {
|
|
if (tevent_add_timer(global_event_context(), NULL, timeval_zero(),
|
|
rescan_trusted_domains, NULL) == NULL) {
|
|
DEBUG(0, ("Could not trigger rescan_trusted_domains()\n"));
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
te = tevent_add_timer(global_event_context(),
|
|
NULL,
|
|
timeval_zero(),
|
|
winbindd_ping_offline_domains,
|
|
NULL);
|
|
if (te == NULL) {
|
|
DBG_ERR("Failed to schedule winbindd_ping_offline_domains()\n");
|
|
exit(1);
|
|
}
|
|
|
|
status = wb_irpc_register();
|
|
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("Could not register IRPC handlers\n"));
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
struct winbindd_addrchanged_state {
|
|
struct addrchange_context *ctx;
|
|
struct tevent_context *ev;
|
|
struct messaging_context *msg_ctx;
|
|
};
|
|
|
|
static void winbindd_addr_changed(struct tevent_req *req);
|
|
|
|
static void winbindd_init_addrchange(TALLOC_CTX *mem_ctx,
|
|
struct tevent_context *ev,
|
|
struct messaging_context *msg_ctx)
|
|
{
|
|
struct winbindd_addrchanged_state *state;
|
|
struct tevent_req *req;
|
|
NTSTATUS status;
|
|
|
|
state = talloc(mem_ctx, struct winbindd_addrchanged_state);
|
|
if (state == NULL) {
|
|
DEBUG(10, ("talloc failed\n"));
|
|
return;
|
|
}
|
|
state->ev = ev;
|
|
state->msg_ctx = msg_ctx;
|
|
|
|
status = addrchange_context_create(state, &state->ctx);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("addrchange_context_create failed: %s\n",
|
|
nt_errstr(status)));
|
|
TALLOC_FREE(state);
|
|
return;
|
|
}
|
|
req = addrchange_send(state, ev, state->ctx);
|
|
if (req == NULL) {
|
|
DEBUG(0, ("addrchange_send failed\n"));
|
|
TALLOC_FREE(state);
|
|
return;
|
|
}
|
|
tevent_req_set_callback(req, winbindd_addr_changed, state);
|
|
}
|
|
|
|
static void winbindd_addr_changed(struct tevent_req *req)
|
|
{
|
|
struct winbindd_addrchanged_state *state = tevent_req_callback_data(
|
|
req, struct winbindd_addrchanged_state);
|
|
enum addrchange_type type;
|
|
struct sockaddr_storage addr;
|
|
NTSTATUS status;
|
|
|
|
status = addrchange_recv(req, &type, &addr);
|
|
TALLOC_FREE(req);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("addrchange_recv failed: %s, stop listening\n",
|
|
nt_errstr(status)));
|
|
TALLOC_FREE(state);
|
|
return;
|
|
}
|
|
if (type == ADDRCHANGE_DEL) {
|
|
char addrstr[INET6_ADDRSTRLEN];
|
|
DATA_BLOB blob;
|
|
|
|
print_sockaddr(addrstr, sizeof(addrstr), &addr);
|
|
|
|
DEBUG(3, ("winbindd: kernel (AF_NETLINK) dropped ip %s\n",
|
|
addrstr));
|
|
|
|
blob = data_blob_const(addrstr, strlen(addrstr)+1);
|
|
|
|
status = messaging_send(state->msg_ctx,
|
|
messaging_server_id(state->msg_ctx),
|
|
MSG_WINBIND_IP_DROPPED, &blob);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(10, ("messaging_send failed: %s - ignoring\n",
|
|
nt_errstr(status)));
|
|
}
|
|
}
|
|
req = addrchange_send(state, state->ev, state->ctx);
|
|
if (req == NULL) {
|
|
DEBUG(0, ("addrchange_send failed\n"));
|
|
TALLOC_FREE(state);
|
|
return;
|
|
}
|
|
tevent_req_set_callback(req, winbindd_addr_changed, state);
|
|
}
|
|
|
|
/* Main function */
|
|
|
|
int main(int argc, const char **argv)
|
|
{
|
|
static bool log_stdout = False;
|
|
struct samba_cmdline_daemon_cfg *cmdline_daemon_cfg = NULL;
|
|
struct poptOption long_options[] = {
|
|
POPT_AUTOHELP
|
|
{
|
|
.longName = "no-caching",
|
|
.shortName = 'n',
|
|
.argInfo = POPT_ARG_NONE,
|
|
.arg = NULL,
|
|
.val = 'n',
|
|
.descrip = "Disable caching",
|
|
},
|
|
POPT_COMMON_SAMBA
|
|
POPT_COMMON_DAEMON
|
|
POPT_COMMON_VERSION
|
|
POPT_TABLEEND
|
|
};
|
|
const struct loadparm_substitution *lp_sub =
|
|
loadparm_s3_global_substitution();
|
|
poptContext pc;
|
|
int opt;
|
|
TALLOC_CTX *frame;
|
|
NTSTATUS status;
|
|
bool ok;
|
|
const struct dcesrv_endpoint_server *ep_server = NULL;
|
|
struct dcesrv_context *dce_ctx = NULL;
|
|
size_t winbindd_socket_dir_len = 0;
|
|
char *winbindd_priv_socket_dir = NULL;
|
|
size_t winbindd_priv_socket_dir_len = 0;
|
|
|
|
setproctitle_init(argc, discard_const(argv), environ);
|
|
|
|
/*
|
|
* Do this before any other talloc operation
|
|
*/
|
|
talloc_enable_null_tracking();
|
|
frame = talloc_stackframe();
|
|
|
|
/*
|
|
* We want total control over the permissions on created files,
|
|
* so set our umask to 0.
|
|
*/
|
|
umask(0);
|
|
|
|
smb_init_locale();
|
|
|
|
/* glibc (?) likes to print "User defined signal 1" and exit if a
|
|
SIGUSR[12] is received before a handler is installed */
|
|
|
|
CatchSignal(SIGUSR1, SIG_IGN);
|
|
CatchSignal(SIGUSR2, SIG_IGN);
|
|
|
|
ok = samba_cmdline_init(frame,
|
|
SAMBA_CMDLINE_CONFIG_SERVER,
|
|
true /* require_smbconf */);
|
|
if (!ok) {
|
|
DBG_ERR("Failed to setup cmdline parser\n");
|
|
TALLOC_FREE(frame);
|
|
exit(1);
|
|
}
|
|
|
|
cmdline_daemon_cfg = samba_cmdline_get_daemon_cfg();
|
|
|
|
pc = samba_popt_get_context(getprogname(), argc, argv, long_options, 0);
|
|
if (pc == NULL) {
|
|
DBG_ERR("Failed to setup popt parser!\n");
|
|
TALLOC_FREE(frame);
|
|
exit(1);
|
|
}
|
|
|
|
while ((opt = poptGetNextOpt(pc)) != -1) {
|
|
switch (opt) {
|
|
case 'n':
|
|
winbindd_set_use_cache(false);
|
|
break;
|
|
default:
|
|
d_fprintf(stderr, "\nInvalid option %s: %s\n\n",
|
|
poptBadOption(pc, 0), poptStrerror(opt));
|
|
poptPrintUsage(pc, stderr, 0);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
/* Set environment variable so we don't recursively call ourselves.
|
|
This may also be useful interactively. */
|
|
if ( !winbind_off() ) {
|
|
DEBUG(0,("Failed to disable recusive winbindd calls. Exiting.\n"));
|
|
exit(1);
|
|
}
|
|
|
|
/* Initialise for running in non-root mode */
|
|
sec_init();
|
|
|
|
set_remote_machine_name("winbindd", False);
|
|
|
|
dump_core_setup("winbindd", lp_logfile(talloc_tos(), lp_sub));
|
|
if (cmdline_daemon_cfg->daemon && cmdline_daemon_cfg->interactive) {
|
|
d_fprintf(stderr,"\nERROR: "
|
|
"Option -i|--interactive is not allowed together with -D|--daemon\n\n");
|
|
poptPrintUsage(pc, stderr, 0);
|
|
exit(1);
|
|
}
|
|
|
|
log_stdout = (debug_get_log_type() == DEBUG_STDOUT);
|
|
if (cmdline_daemon_cfg->interactive) {
|
|
/*
|
|
* libcmdline POPT_DAEMON callback sets "fork" to false if "-i"
|
|
* for interactive is passed on the commandline. Set it back to
|
|
* true. TODO: check if this is correct, smbd and nmbd don't do
|
|
* this.
|
|
*/
|
|
cmdline_daemon_cfg->fork = true;
|
|
log_stdout = true;
|
|
}
|
|
|
|
if (log_stdout && cmdline_daemon_cfg->fork) {
|
|
d_fprintf(stderr, "\nERROR: "
|
|
"Can't log to stdout (-S) unless daemon is in "
|
|
"foreground (-F) or interactive (-i)\n\n");
|
|
poptPrintUsage(pc, stderr, 0);
|
|
exit(1);
|
|
}
|
|
|
|
poptFreeContext(pc);
|
|
|
|
reopen_logs();
|
|
|
|
DEBUG(0,("winbindd version %s started.\n", samba_version_string()));
|
|
DEBUGADD(0,("%s\n", COPYRIGHT_STARTUP_MESSAGE));
|
|
|
|
/* After parsing the configuration file we setup the core path one more time
|
|
* as the log file might have been set in the configuration and cores's
|
|
* path is by default basename(lp_logfile()).
|
|
*/
|
|
dump_core_setup("winbindd", lp_logfile(talloc_tos(), lp_sub));
|
|
|
|
if (lp_server_role() == ROLE_ACTIVE_DIRECTORY_DC) {
|
|
if (!lp_parm_bool(-1, "server role check", "inhibit", false)) {
|
|
DBG_ERR("server role = 'active directory domain controller' not compatible with running the winbindd binary. \n");
|
|
DEBUGADD(0, ("You should start 'samba' instead, and it will control starting the internal AD DC winbindd implementation, which is not the same as this one\n"));
|
|
exit(1);
|
|
}
|
|
/* Main 'samba' daemon will notify */
|
|
daemon_sd_notifications(false);
|
|
}
|
|
|
|
if (lp_security() == SEC_ADS) {
|
|
const char *realm = lp_realm();
|
|
const char *workgroup = lp_workgroup();
|
|
|
|
if (workgroup == NULL || strlen(workgroup) == 0) {
|
|
DBG_ERR("For 'secuirity = ADS' mode, the 'workgroup' "
|
|
"parameter is required to be set!\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (realm == NULL || strlen(realm) == 0) {
|
|
DBG_ERR("For 'secuirity = ADS' mode, the 'realm' "
|
|
"parameter is required to be set!\n");
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
winbindd_socket_dir_len = strlen(lp_winbindd_socket_directory());
|
|
if (winbindd_socket_dir_len > 0) {
|
|
size_t winbindd_socket_len =
|
|
winbindd_socket_dir_len + 1 +
|
|
strlen(WINBINDD_SOCKET_NAME);
|
|
struct sockaddr_un un = {
|
|
.sun_family = AF_UNIX,
|
|
};
|
|
size_t sun_path_len = sizeof(un.sun_path);
|
|
|
|
if (winbindd_socket_len >= sun_path_len) {
|
|
DBG_ERR("The winbind socket path [%s/%s] is too long "
|
|
"(%zu >= %zu)\n",
|
|
lp_winbindd_socket_directory(),
|
|
WINBINDD_SOCKET_NAME,
|
|
winbindd_socket_len,
|
|
sun_path_len);
|
|
exit(1);
|
|
}
|
|
} else {
|
|
DBG_ERR("'winbindd_socket_directory' parameter is empty\n");
|
|
exit(1);
|
|
}
|
|
|
|
winbindd_priv_socket_dir = get_winbind_priv_pipe_dir();
|
|
winbindd_priv_socket_dir_len = strlen(winbindd_priv_socket_dir);
|
|
if (winbindd_priv_socket_dir_len > 0) {
|
|
size_t winbindd_priv_socket_len =
|
|
winbindd_priv_socket_dir_len + 1 +
|
|
strlen(WINBINDD_SOCKET_NAME);
|
|
struct sockaddr_un un = {
|
|
.sun_family = AF_UNIX,
|
|
};
|
|
size_t sun_path_len = sizeof(un.sun_path);
|
|
|
|
if (winbindd_priv_socket_len >= sun_path_len) {
|
|
DBG_ERR("The winbind privileged socket path [%s/%s] is too long "
|
|
"(%zu >= %zu)\n",
|
|
winbindd_priv_socket_dir,
|
|
WINBINDD_SOCKET_NAME,
|
|
winbindd_priv_socket_len,
|
|
sun_path_len);
|
|
exit(1);
|
|
}
|
|
} else {
|
|
DBG_ERR("'winbindd_priv_socket_directory' parameter is empty\n");
|
|
exit(1);
|
|
}
|
|
TALLOC_FREE(winbindd_priv_socket_dir);
|
|
|
|
if (!cluster_probe_ok()) {
|
|
exit(1);
|
|
}
|
|
|
|
/* Initialise messaging system */
|
|
|
|
if (global_messaging_context() == NULL) {
|
|
exit(1);
|
|
}
|
|
|
|
if (!winbindd_reload_services_file(NULL)) {
|
|
DEBUG(0, ("error opening config file\n"));
|
|
exit(1);
|
|
}
|
|
|
|
{
|
|
size_t i;
|
|
const char *idmap_backend;
|
|
const char *invalid_backends[] = {
|
|
"ad", "rfc2307", "rid",
|
|
};
|
|
|
|
idmap_backend = lp_idmap_default_backend();
|
|
for (i = 0; i < ARRAY_SIZE(invalid_backends); i++) {
|
|
ok = strequal(idmap_backend, invalid_backends[i]);
|
|
if (ok) {
|
|
DBG_ERR("FATAL: Invalid idmap backend %s "
|
|
"configured as the default backend!\n",
|
|
idmap_backend);
|
|
exit(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
ok = directory_create_or_exist(lp_lock_directory(), 0755);
|
|
if (!ok) {
|
|
DEBUG(0, ("Failed to create directory %s for lock files - %s\n",
|
|
lp_lock_directory(), strerror(errno)));
|
|
exit(1);
|
|
}
|
|
|
|
ok = directory_create_or_exist(lp_pid_directory(), 0755);
|
|
if (!ok) {
|
|
DEBUG(0, ("Failed to create directory %s for pid files - %s\n",
|
|
lp_pid_directory(), strerror(errno)));
|
|
exit(1);
|
|
}
|
|
|
|
load_interfaces();
|
|
|
|
if (!secrets_init()) {
|
|
|
|
DEBUG(0,("Could not initialize domain trust account secrets. Giving up\n"));
|
|
return False;
|
|
}
|
|
|
|
status = rpccli_pre_open_netlogon_creds();
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0, ("rpccli_pre_open_netlogon_creds() - %s\n",
|
|
nt_errstr(status)));
|
|
exit(1);
|
|
}
|
|
|
|
/* Unblock all signals we are interested in as they may have been
|
|
blocked by the parent process. */
|
|
|
|
BlockSignals(False, SIGINT);
|
|
BlockSignals(False, SIGQUIT);
|
|
BlockSignals(False, SIGTERM);
|
|
BlockSignals(False, SIGUSR1);
|
|
BlockSignals(False, SIGUSR2);
|
|
BlockSignals(False, SIGHUP);
|
|
BlockSignals(False, SIGCHLD);
|
|
|
|
if (!interactive) {
|
|
become_daemon(cmdline_daemon_cfg->fork,
|
|
cmdline_daemon_cfg->no_process_group,
|
|
log_stdout);
|
|
} else {
|
|
daemon_status("winbindd", "Starting process ...");
|
|
}
|
|
|
|
pidfile_create(lp_pid_directory(), "winbindd");
|
|
|
|
#ifdef HAVE_SETPGID
|
|
/*
|
|
* If we're interactive we want to set our own process group for
|
|
* signal management.
|
|
*/
|
|
if (cmdline_daemon_cfg->interactive &&
|
|
!cmdline_daemon_cfg->no_process_group)
|
|
{
|
|
setpgid( (pid_t)0, (pid_t)0);
|
|
}
|
|
#endif
|
|
|
|
TimeInit();
|
|
|
|
/* Don't use winbindd_reinit_after_fork here as
|
|
* we're just starting up and haven't created any
|
|
* winbindd-specific resources we must free yet. JRA.
|
|
*/
|
|
|
|
status = reinit_after_fork(global_messaging_context(),
|
|
global_event_context(),
|
|
false);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
exit_daemon("Winbindd reinit_after_fork() failed", map_errno_from_nt_status(status));
|
|
}
|
|
|
|
if (lp_winbind_debug_traceid()) {
|
|
winbind_debug_traceid_setup(global_event_context());
|
|
tevent_thread_call_depth_activate(debug_call_depth_addr());
|
|
}
|
|
ok = initialize_password_db(true, global_event_context());
|
|
if (!ok) {
|
|
exit_daemon("Failed to initialize passdb backend! "
|
|
"Check the 'passdb backend' variable in your "
|
|
"smb.conf file.", EINVAL);
|
|
}
|
|
|
|
/*
|
|
* Do not initialize the parent-child-pipe before becoming
|
|
* a daemon: this is used to detect a died parent in the child
|
|
* process.
|
|
*/
|
|
status = init_before_fork();
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
exit_daemon(nt_errstr(status), map_errno_from_nt_status(status));
|
|
}
|
|
|
|
winbindd_register_handlers(global_messaging_context(),
|
|
!cmdline_daemon_cfg->fork);
|
|
|
|
if (!messaging_parent_dgm_cleanup_init(global_messaging_context())) {
|
|
exit(1);
|
|
}
|
|
|
|
status = init_system_session_info(NULL);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
exit_daemon("Winbindd failed to setup system user info", map_errno_from_nt_status(status));
|
|
}
|
|
|
|
DBG_INFO("Registering DCE/RPC endpoint servers\n");
|
|
|
|
ep_server = winbind_get_ep_server();
|
|
if (ep_server == NULL) {
|
|
DBG_ERR("Failed to get 'winbind' endpoint server\n");
|
|
exit(1);
|
|
}
|
|
status = dcerpc_register_ep_server(ep_server);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_ERR("Failed to register 'winbind' endpoint "
|
|
"server: %s\n", nt_errstr(status));
|
|
exit(1);
|
|
}
|
|
|
|
dce_ctx = global_dcesrv_context();
|
|
|
|
DBG_INFO("Initializing DCE/RPC registered endpoint servers\n");
|
|
|
|
/* Init all registered ep servers */
|
|
status = dcesrv_init_registered_ep_servers(dce_ctx);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DBG_ERR("Failed to init DCE/RPC endpoint servers: %s\n",
|
|
nt_errstr(status));
|
|
exit(1);
|
|
}
|
|
|
|
winbindd_init_addrchange(NULL, global_event_context(),
|
|
global_messaging_context());
|
|
|
|
/* setup listen sockets */
|
|
|
|
if (!winbindd_setup_listeners()) {
|
|
exit_daemon("Winbindd failed to setup listeners", EPIPE);
|
|
}
|
|
|
|
irpc_add_name(winbind_imessaging_context(), "winbind_server");
|
|
|
|
TALLOC_FREE(frame);
|
|
|
|
if (!interactive) {
|
|
daemon_ready("winbindd");
|
|
}
|
|
|
|
gpupdate_init();
|
|
|
|
/* Loop waiting for requests */
|
|
while (1) {
|
|
frame = talloc_stackframe();
|
|
|
|
if (tevent_loop_once(global_event_context()) == -1) {
|
|
DEBUG(1, ("tevent_loop_once() failed: %s\n",
|
|
strerror(errno)));
|
|
return 1;
|
|
}
|
|
|
|
TALLOC_FREE(frame);
|
|
}
|
|
|
|
return 0;
|
|
}
|