*/
#include "includes.h"
+#include "popt_common.h"
#include "winbindd.h"
+#include "nsswitch/winbind_client.h"
#include "../../nsswitch/libwbclient/wbc_async.h"
#include "librpc/gen_ndr/messaging.h"
#include "../librpc/gen_ndr/srv_lsa.h"
#include "../librpc/gen_ndr/srv_samr.h"
+#include "secrets.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_WINBIND
-static void remove_client(struct winbindd_cli_state *state);
-
static bool opt_nocache = False;
static bool interactive = False;
extern bool override_logfile;
-/* Reload configuration */
-
-static bool reload_services_file(const char *lfile)
-{
- bool ret;
-
- if (lp_loaded()) {
- const char *fname = lp_configfile();
-
- if (file_exist(fname) && !strcsequal(fname,get_dyn_CONFIGFILE())) {
- set_dyn_CONFIGFILE(fname);
- }
- }
-
- /* if this is a child, restore the logfile to the special
- name - <domain>, idmap, etc. */
- if (lfile && *lfile) {
- lp_set_logfile(lfile);
- }
-
- reopen_logs();
- ret = lp_load(get_dyn_CONFIGFILE(),False,False,True,True);
-
- reopen_logs();
- load_interfaces();
-
- return(ret);
-}
-
-
/**************************************************************************** **
Handle a fault..
**************************************************************************** */
dump_core();
}
-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\n",
- (unsigned long)tmp->pid, tmp->sock));
- }
- }
-}
-
-/* Print winbindd status to log file */
-
-static void print_winbindd_status(void)
-{
- winbindd_status();
-}
-
-/* Flush client cache */
-
-static void flush_caches(void)
-{
- /* We need to invalidate cached user list entries on a SIGHUP
- otherwise cached access denied errors due to restrict anonymous
- hang around until the sequence number changes. */
-
- if (!wcache_invalidate_cache()) {
- DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
- if (!winbindd_cache_validate_and_initialize()) {
- exit(1);
- }
- }
-}
-
-static void flush_caches_noinit(void)
-{
- /*
- * We need to invalidate cached user list entries on a SIGHUP
- * otherwise cached access denied errors due to restrict anonymous
- * hang around until the sequence number changes.
- * NB
- * Skip uninitialized domains when flush cache.
- * If domain is not initialized, it means it is never
- * used or never become online. look, wcache_invalidate_cache()
- * -> get_cache() -> init_dc_connection(). It causes a lot of traffic
- * for unused domains and large traffic for primay domain's DC if there
- * are many domains..
- */
-
- if (!wcache_invalidate_cache_noinit()) {
- DEBUG(0, ("invalidating the cache failed; revalidate the cache\n"));
- if (!winbindd_cache_validate_and_initialize()) {
- exit(1);
- }
- }
-}
-
-/* Handle the signal by unlinking socket and exiting */
-
-static void terminate(bool is_parent)
-{
- if (is_parent) {
- /* When parent goes away we should
- * remove the socket file. Not so
- * when children terminate.
- */
- char *path = NULL;
-
- if (asprintf(&path, "%s/%s",
- get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME) > 0) {
- unlink(path);
- SAFE_FREE(path);
- }
- }
-
- idmap_close();
-
- trustdom_cache_shutdown();
-
- gencache_stabilize();
-
-#if 0
- if (interactive) {
- TALLOC_CTX *mem_ctx = talloc_init("end_description");
- char *description = talloc_describe_all(mem_ctx);
-
- DEBUG(3, ("tallocs left:\n%s\n", description));
- talloc_destroy(mem_ctx);
- }
-#endif
-
- if (is_parent) {
- serverid_deregister(procid_self());
- pidfile_unlink();
- }
-
- exit(0);
-}
-
-static void winbindd_sig_term_handler(struct tevent_context *ev,
- struct tevent_signal *se,
- int signum,
- int count,
- void *siginfo,
- void *private_data)
-{
- bool *is_parent = talloc_get_type_abort(private_data, bool);
-
- DEBUG(0,("Got sig[%d] terminate (is_parent=%d)\n",
- signum, (int)*is_parent));
- terminate(*is_parent);
-}
-
-bool winbindd_setup_sig_term_handler(bool parent)
-{
- struct tevent_signal *se;
- bool *is_parent;
-
- is_parent = talloc(winbind_event_context(), bool);
- if (!is_parent) {
- return false;
- }
-
- *is_parent = parent;
-
- se = tevent_add_signal(winbind_event_context(),
- is_parent,
- SIGTERM, 0,
- winbindd_sig_term_handler,
- is_parent);
- if (!se) {
- DEBUG(0,("failed to setup SIGTERM handler"));
- talloc_free(is_parent);
- return false;
- }
-
- se = tevent_add_signal(winbind_event_context(),
- is_parent,
- SIGINT, 0,
- winbindd_sig_term_handler,
- is_parent);
- if (!se) {
- DEBUG(0,("failed to setup SIGINT handler"));
- talloc_free(is_parent);
- return false;
- }
-
- se = tevent_add_signal(winbind_event_context(),
- is_parent,
- SIGQUIT, 0,
- winbindd_sig_term_handler,
- is_parent);
- if (!se) {
- DEBUG(0,("failed to setup SIGINT handler"));
- talloc_free(is_parent);
- return false;
- }
-
- return true;
-}
-
-static void winbindd_sig_hup_handler(struct tevent_context *ev,
- struct tevent_signal *se,
- int signum,
- int count,
- void *siginfo,
- void *private_data)
-{
- const char *file = (const char *)private_data;
-
- DEBUG(1,("Reloading services after SIGHUP\n"));
- flush_caches_noinit();
- reload_services_file(file);
-}
-
-bool winbindd_setup_sig_hup_handler(const char *lfile)
-{
- struct tevent_signal *se;
- char *file = NULL;
-
- if (lfile) {
- file = talloc_strdup(winbind_event_context(),
- lfile);
- if (!file) {
- return false;
- }
- }
-
- se = tevent_add_signal(winbind_event_context(),
- winbind_event_context(),
- SIGHUP, 0,
- winbindd_sig_hup_handler,
- file);
- if (!se) {
- return false;
- }
-
- 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 = sys_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(winbind_event_context(),
- winbind_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)
-{
- print_winbindd_status();
-}
-
-static bool winbindd_setup_sig_usr2_handler(void)
-{
- struct tevent_signal *se;
-
- se = tevent_add_signal(winbind_event_context(),
- winbind_event_context(),
- SIGUSR2, 0,
- winbindd_sig_usr2_handler,
- NULL);
- if (!se) {
- return false;
- }
-
- return true;
-}
-
-/* React on 'smbcontrol winbindd reload-config' in the same way as on SIGHUP*/
-static void msg_reload_services(struct messaging_context *msg,
- void *private_data,
- uint32_t msg_type,
- struct server_id server_id,
- DATA_BLOB *data)
-{
- /* Flush various caches */
- flush_caches();
- reload_services_file((const char *) private_data);
-}
-
-/* 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"));
- 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 ret;
- pid_t child_pid;
-
- 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 = sys_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 */
-
- if (!winbindd_reinit_after_fork(NULL)) {
- _exit(0);
- }
-
- /* install default SIGCHLD handler: validation code uses fork/waitpid */
- CatchSignal(SIGCHLD, SIG_DFL);
-
- ret = (uint8)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_dispatch_table {
- enum winbindd_cmd cmd;
- void (*fn)(struct winbindd_cli_state *state);
- const char *winbindd_cmd_name;
-} dispatch_table[] = {
-
- /* Enumeration functions */
-
- { WINBINDD_LIST_TRUSTDOM, winbindd_list_trusted_domains,
- "LIST_TRUSTDOM" },
-
- /* Miscellaneous */
-
- { WINBINDD_INFO, winbindd_info, "INFO" },
- { WINBINDD_INTERFACE_VERSION, winbindd_interface_version,
- "INTERFACE_VERSION" },
- { WINBINDD_DOMAIN_NAME, winbindd_domain_name, "DOMAIN_NAME" },
- { WINBINDD_DOMAIN_INFO, winbindd_domain_info, "DOMAIN_INFO" },
- { WINBINDD_NETBIOS_NAME, winbindd_netbios_name, "NETBIOS_NAME" },
- { WINBINDD_PRIV_PIPE_DIR, winbindd_priv_pipe_dir,
- "WINBINDD_PRIV_PIPE_DIR" },
-
- /* Credential cache access */
- { WINBINDD_CCACHE_NTLMAUTH, winbindd_ccache_ntlm_auth, "NTLMAUTH" },
- { WINBINDD_CCACHE_SAVE, winbindd_ccache_save, "CCACHE_SAVE" },
-
- /* WINS functions */
-
- { WINBINDD_WINS_BYNAME, winbindd_wins_byname, "WINS_BYNAME" },
- { WINBINDD_WINS_BYIP, winbindd_wins_byip, "WINS_BYIP" },
-
- /* End of list */
-
- { WINBINDD_NUM_CMDS, NULL, "NONE" }
-};
-
-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_PING, "PING",
- wb_ping_send, wb_ping_recv },
- { WINBINDD_LOOKUPSID, "LOOKUPSID",
- winbindd_lookupsid_send, winbindd_lookupsid_recv },
- { WINBINDD_LOOKUPNAME, "LOOKUPNAME",
- winbindd_lookupname_send, winbindd_lookupname_recv },
- { WINBINDD_SID_TO_UID, "SID_TO_UID",
- winbindd_sid_to_uid_send, winbindd_sid_to_uid_recv },
- { WINBINDD_SID_TO_GID, "SID_TO_GID",
- winbindd_sid_to_gid_send, winbindd_sid_to_gid_recv },
- { WINBINDD_UID_TO_SID, "UID_TO_SID",
- winbindd_uid_to_sid_send, winbindd_uid_to_sid_recv },
- { WINBINDD_GID_TO_SID, "GID_TO_SID",
- winbindd_gid_to_sid_send, winbindd_gid_to_sid_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 },
-
- { 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_SET_MAPPING, "SET_MAPPING",
- winbindd_set_mapping_send, winbindd_set_mapping_recv },
- { WINBINDD_REMOVE_MAPPING, "SET_MAPPING",
- winbindd_remove_mapping_send, winbindd_remove_mapping_recv },
- { WINBINDD_SET_HWM, "SET_HWM",
- winbindd_set_hwm_send, winbindd_set_hwm_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 }
-};
-
-static void wb_request_done(struct tevent_req *req);
-
-static void process_request(struct winbindd_cli_state *state)
-{
- struct winbindd_dispatch_table *table = dispatch_table;
- struct winbindd_async_dispatch_table *atable;
-
- state->mem_ctx = talloc_named(state, 0, "winbind request");
- if (state->mem_ctx == NULL)
- return;
-
- /* Remember who asked us. */
- state->pid = state->request->pid;
-
- state->cmd_name = "unknown request";
- state->recv_fn = NULL;
-
- /* Process command */
-
- for (atable = async_nonpriv_table; atable->send_req; atable += 1) {
- if (state->request->cmd == atable->cmd) {
- break;
- }
- }
-
- if ((atable->send_req == NULL) && state->privileged) {
- for (atable = async_priv_table; atable->send_req;
- atable += 1) {
- if (state->request->cmd == atable->cmd) {
- break;
- }
- }
- }
-
- if (atable->send_req != NULL) {
- struct tevent_req *req;
-
- state->cmd_name = atable->cmd_name;
- state->recv_fn = atable->recv_req;
-
- DEBUG(10, ("process_request: Handling async request %d:%s\n",
- (int)state->pid, state->cmd_name));
-
- req = atable->send_req(state->mem_ctx, winbind_event_context(),
- state, state->request);
- if (req == NULL) {
- DEBUG(0, ("process_request: atable->send failed for "
- "%s\n", atable->cmd_name));
- request_error(state);
- return;
- }
- tevent_req_set_callback(req, wb_request_done, state);
- return;
- }
-
- state->response = talloc_zero(state->mem_ctx,
- struct winbindd_response);
- if (state->response == NULL) {
- DEBUG(10, ("talloc failed\n"));
- remove_client(state);
- return;
- }
- state->response->result = WINBINDD_PENDING;
- state->response->length = sizeof(struct winbindd_response);
-
- for (table = dispatch_table; table->fn; table++) {
- if (state->request->cmd == table->cmd) {
- DEBUG(10,("process_request: request fn %s\n",
- table->winbindd_cmd_name ));
- state->cmd_name = table->winbindd_cmd_name;
- table->fn(state);
- break;
- }
- }
-
- if (!table->fn) {
- DEBUG(10,("process_request: unknown request fn number %d\n",
- (int)state->request->cmd ));
- request_error(state);
- }
-}
-
-static void wb_request_done(struct tevent_req *req)
-{
- struct winbindd_cli_state *state = tevent_req_callback_data(
- req, struct winbindd_cli_state);
- NTSTATUS status;
-
- state->response = talloc_zero(state->mem_ctx,
- struct winbindd_response);
- if (state->response == NULL) {
- DEBUG(0, ("wb_request_done[%d:%s]: talloc_zero failed - removing client\n",
- (int)state->pid, state->cmd_name));
- remove_client(state);
- return;
- }
- state->response->result = WINBINDD_PENDING;
- state->response->length = sizeof(struct winbindd_response);
-
- status = state->recv_fn(req, state->response);
- TALLOC_FREE(req);
-
- DEBUG(10,("wb_request_done[%d:%s]: %s\n",
- (int)state->pid, state->cmd_name, nt_errstr(status)));
-
- if (!NT_STATUS_IS_OK(status)) {
- request_error(state);
- return;
- }
- request_ok(state);
-}
-
-/*
- * 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 request_finished(struct winbindd_cli_state *state);
-
-static void winbind_client_request_read(struct tevent_req *req);
-static void winbind_client_response_written(struct tevent_req *req);
-
-static void request_finished(struct winbindd_cli_state *state)
-{
- struct tevent_req *req;
-
- TALLOC_FREE(state->request);
-
- req = wb_resp_write_send(state, winbind_event_context(),
- state->out_queue, state->sock,
- state->response);
- if (req == NULL) {
- DEBUG(10,("request_finished[%d:%s]: wb_resp_write_send() failed\n",
- (int)state->pid, state->cmd_name));
- remove_client(state);
- return;
- }
- tevent_req_set_callback(req, winbind_client_response_written, state);
-}
-
-static void winbind_client_response_written(struct tevent_req *req)
-{
- struct winbindd_cli_state *state = tevent_req_callback_data(
- req, struct winbindd_cli_state);
- ssize_t ret;
- int err;
-
- ret = wb_resp_write_recv(req, &err);
- TALLOC_FREE(req);
- if (ret == -1) {
- close(state->sock);
- state->sock = -1;
- DEBUG(2, ("Could not write response[%d:%s] to client: %s\n",
- (int)state->pid, state->cmd_name, strerror(err)));
- remove_client(state);
- return;
- }
-
- DEBUG(10,("winbind_client_response_written[%d:%s]: delivered response "
- "to client\n", (int)state->pid, state->cmd_name));
-
- TALLOC_FREE(state->mem_ctx);
- state->response = NULL;
- state->cmd_name = "no request";
- state->recv_fn = NULL;
-
- req = wb_req_read_send(state, winbind_event_context(), state->sock,
- WINBINDD_MAX_EXTRA_DATA);
- if (req == NULL) {
- remove_client(state);
- return;
- }
- tevent_req_set_callback(req, winbind_client_request_read, state);
-}
-
-void request_error(struct winbindd_cli_state *state)
-{
- SMB_ASSERT(state->response->result == WINBINDD_PENDING);
- state->response->result = WINBINDD_ERROR;
- request_finished(state);
-}
-
-void request_ok(struct winbindd_cli_state *state)
-{
- SMB_ASSERT(state->response->result == WINBINDD_PENDING);
- state->response->result = WINBINDD_OK;
- request_finished(state);
-}
-
-/* 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);
-
- do {
- sock = accept(listen_sock, (struct sockaddr *)(void *)&sunaddr,
- &len);
- } while (sock == -1 && errno == EINTR);
-
- if (sock == -1)
- return;
-
- DEBUG(6,("accepted socket %d\n", sock));
-
- /* Create new connection structure */
-
- if ((state = TALLOC_ZERO_P(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->last_access = time(NULL);
-
- state->privileged = privileged;
-
- req = wb_req_read_send(state, winbind_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);
-
- /* 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;
-
- 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;
- }
- process_request(state);
-}
-
-/* Remove a client connection from client connection list */
-
-static void remove_client(struct winbindd_cli_state *state)
-{
- char c = 0;
- int nwritten;
-
- /* It's a dead client - hold a funeral */
-
- if (state == NULL) {
- return;
- }
-
- if (state->sock != -1) {
- /* 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);
-}
-
-/* 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;
- time_t last_access = 0;
- int nidle = 0;
-
- for (state = winbindd_client_list(); state; state = state->next) {
- if (state->response == NULL &&
- !state->pwent_state && !state->grent_state) {
- nidle++;
- if (!last_access || state->last_access < last_access) {
- last_access = state->last_access;
- 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;
-}
-
-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() >
- WINBINDD_MAX_SIMULTANEOUS_CLIENTS - 1) {
- DEBUG(5,("winbindd: Exceeding %d client "
- "connections, removing idle "
- "connection.\n",
- WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
- if (!remove_idle_client()) {
- DEBUG(0,("winbindd: Exceeding %d "
- "client connections, no idle "
- "connection found\n",
- WINBINDD_MAX_SIMULTANEOUS_CLIENTS));
- break;
- }
- }
- new_connection(s->fd, s->privileged);
-}
-
-/*
- * Winbindd socket accessor functions
- */
-
-const char *get_winbind_pipe_dir(void)
-{
- return lp_parm_const_string(-1, "winbindd", "socket dir", WINBINDD_SOCKET_DIR);
-}
-
-char *get_winbind_priv_pipe_dir(void)
-{
- return lock_path(WINBINDD_PRIV_SOCKET_SUBDIR);
-}
-
-static bool winbindd_setup_listeners(void)
-{
- struct winbindd_listen_state *pub_state = NULL;
- struct winbindd_listen_state *priv_state = NULL;
- struct tevent_fd *fde;
-
- pub_state = talloc(winbind_event_context(),
- struct winbindd_listen_state);
- if (!pub_state) {
- goto failed;
- }
-
- pub_state->privileged = false;
- pub_state->fd = create_pipe_sock(
- get_winbind_pipe_dir(), WINBINDD_SOCKET_NAME, 0755);
- if (pub_state->fd == -1) {
- goto failed;
- }
-
- fde = tevent_add_fd(winbind_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(winbind_event_context(),
- struct winbindd_listen_state);
- if (!priv_state) {
- goto failed;
- }
-
- priv_state->privileged = true;
- priv_state->fd = create_pipe_sock(
- get_winbind_priv_pipe_dir(), WINBINDD_SOCKET_NAME, 0750);
- if (priv_state->fd == -1) {
- goto failed;
- }
-
- fde = tevent_add_fd(winbind_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);
-
- return true;
-failed:
- TALLOC_FREE(pub_state);
- TALLOC_FREE(priv_state);
- return false;
-}
-
bool winbindd_use_idmap_cache(void)
{
return !opt_nocache;
return !opt_nocache;
}
-void winbindd_register_handlers(void)
-{
- struct tevent_timer *te;
- /* Setup signal handlers */
-
- if (!winbindd_setup_sig_term_handler(true))
- 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);
- }
-
- /* get broadcast messages */
-
- if (!serverid_register(procid_self(),
- FLAG_MSG_GENERAL|FLAG_MSG_DBWRAP)) {
- DEBUG(1, ("Could not register myself in serverid.tdb\n"));
- exit(1);
- }
-
- /* React on 'smbcontrol winbindd reload-config' in the same way
- as to SIGHUP signal */
- messaging_register(winbind_messaging_context(), NULL,
- MSG_SMB_CONF_UPDATED, msg_reload_services);
- messaging_register(winbind_messaging_context(), NULL,
- MSG_SHUTDOWN, msg_shutdown);
-
- /* Handle online/offline messages. */
- messaging_register(winbind_messaging_context(), NULL,
- MSG_WINBIND_OFFLINE, winbind_msg_offline);
- messaging_register(winbind_messaging_context(), NULL,
- MSG_WINBIND_ONLINE, winbind_msg_online);
- messaging_register(winbind_messaging_context(), NULL,
- MSG_WINBIND_ONLINESTATUS, winbind_msg_onlinestatus);
-
- messaging_register(winbind_messaging_context(), NULL,
- MSG_DUMP_EVENT_LIST, winbind_msg_dump_event_list);
-
- messaging_register(winbind_messaging_context(), NULL,
- MSG_WINBIND_VALIDATE_CACHE,
- winbind_msg_validate_cache);
-
- messaging_register(winbind_messaging_context(), NULL,
- MSG_WINBIND_DUMP_DOMAIN_LIST,
- winbind_msg_dump_domain_list);
-
- /* Register handler for MSG_DEBUG. */
- messaging_register(winbind_messaging_context(), NULL,
- MSG_DEBUG,
- winbind_msg_debug);
-
- 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();
-
- te = tevent_add_timer(winbind_event_context(), NULL, timeval_zero(),
- rescan_trusted_domains, NULL);
- if (te == NULL) {
- DEBUG(0, ("Could not trigger rescan_trusted_domains()\n"));
- exit(1);
- }
-
-}
-
-/* Main function */
-
int main(int argc, char **argv, char **envp)
{
static bool is_daemon = False;
exit(1);
}
- if (!reload_services_file(NULL)) {
+ if (!winbindd_reload_services_file(NULL)) {
DEBUG(0, ("error opening config file\n"));
exit(1);
}
git.samba.org / abartlet / samba.git / .git / blobdiff