*/
#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
extern bool override_logfile;
-struct event_context *winbind_event_context(void)
-{
- static struct event_context *ctx;
-
- if (!ctx && !(ctx = event_context_init(NULL))) {
- smb_panic("Could not init winbind event context");
- }
- return ctx;
-}
-
-struct messaging_context *winbind_messaging_context(void)
-{
- static struct messaging_context *ctx;
-
- if (ctx == NULL) {
- ctx = messaging_init(NULL, server_id_self(),
- winbind_event_context());
- }
- if (ctx == NULL) {
- DEBUG(0, ("Could not init winbind messaging context.\n"));
- }
- return ctx;
-}
-
-/* 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);
- }
- }
-}
-
-/* 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();
-
-#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
-
- 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();
- 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;
- struct sigaction act;
- struct sigaction oldact;
-
- 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...
- */
- CatchChild();
- 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 */
-
- /* install default SIGCHLD handler: validation code uses fork/waitpid */
- ZERO_STRUCT(act);
- act.sa_handler = SIG_DFL;
-#ifdef SA_RESTART
- /* We *want* SIGALRM to interrupt a system call. */
- act.sa_flags = SA_RESTART;
-#endif
- sigemptyset(&act.sa_mask);
- sigaddset(&act.sa_mask,SIGCHLD);
- sigaction(SIGCHLD,&act,&oldact);
-
- 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[] = {
-
- /* User functions */
-
- { WINBINDD_GETPWNAM, winbindd_getpwnam, "GETPWNAM" },
- { WINBINDD_GETPWUID, winbindd_getpwuid, "GETPWUID" },
- { WINBINDD_GETPWSID, winbindd_getpwsid, "GETPWSID" },
-
- { WINBINDD_SETPWENT, winbindd_setpwent, "SETPWENT" },
- { WINBINDD_ENDPWENT, winbindd_endpwent, "ENDPWENT" },
- { WINBINDD_GETPWENT, winbindd_getpwent, "GETPWENT" },
-
- { WINBINDD_GETGROUPS, winbindd_getgroups, "GETGROUPS" },
- { WINBINDD_GETUSERSIDS, winbindd_getusersids, "GETUSERSIDS" },
- { WINBINDD_GETUSERDOMGROUPS, winbindd_getuserdomgroups,
- "GETUSERDOMGROUPS" },
- { WINBINDD_GETSIDALIASES, winbindd_getsidaliases,
- "LOOKUPUSERALIASES" },
-
- /* Group functions */
-
- { WINBINDD_GETGRNAM, winbindd_getgrnam, "GETGRNAM" },
- { WINBINDD_GETGRGID, winbindd_getgrgid, "GETGRGID" },
- { WINBINDD_SETGRENT, winbindd_setgrent, "SETGRENT" },
- { WINBINDD_ENDGRENT, winbindd_endgrent, "ENDGRENT" },
- { WINBINDD_GETGRENT, winbindd_getgrent, "GETGRENT" },
- { WINBINDD_GETGRLST, winbindd_getgrent, "GETGRLST" },
-
- /* PAM auth functions */
-
- { WINBINDD_PAM_AUTH, winbindd_pam_auth, "PAM_AUTH" },
- { WINBINDD_PAM_AUTH_CRAP, winbindd_pam_auth_crap, "AUTH_CRAP" },
- { WINBINDD_PAM_CHAUTHTOK, winbindd_pam_chauthtok, "CHAUTHTOK" },
- { WINBINDD_PAM_LOGOFF, winbindd_pam_logoff, "PAM_LOGOFF" },
- { WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, winbindd_pam_chng_pswd_auth_crap, "CHNG_PSWD_AUTH_CRAP" },
-
- /* Enumeration functions */
-
- { WINBINDD_LIST_USERS, winbindd_list_users, "LIST_USERS" },
- { WINBINDD_LIST_GROUPS, winbindd_list_groups, "LIST_GROUPS" },
- { WINBINDD_LIST_TRUSTDOM, winbindd_list_trusted_domains,
- "LIST_TRUSTDOM" },
- { WINBINDD_SHOW_SEQUENCE, winbindd_show_sequence, "SHOW_SEQUENCE" },
-
- /* SID related functions */
-
- { WINBINDD_LOOKUPSID, winbindd_lookupsid, "LOOKUPSID" },
- { WINBINDD_LOOKUPNAME, winbindd_lookupname, "LOOKUPNAME" },
- { WINBINDD_LOOKUPRIDS, winbindd_lookuprids, "LOOKUPRIDS" },
-
- /* Lookup related functions */
-
- { WINBINDD_SID_TO_UID, winbindd_sid_to_uid, "SID_TO_UID" },
- { WINBINDD_SID_TO_GID, winbindd_sid_to_gid, "SID_TO_GID" },
- { WINBINDD_UID_TO_SID, winbindd_uid_to_sid, "UID_TO_SID" },
- { WINBINDD_GID_TO_SID, winbindd_gid_to_sid, "GID_TO_SID" },
- { WINBINDD_ALLOCATE_UID, winbindd_allocate_uid, "ALLOCATE_UID" },
- { WINBINDD_ALLOCATE_GID, winbindd_allocate_gid, "ALLOCATE_GID" },
- { WINBINDD_SET_MAPPING, winbindd_set_mapping, "SET_MAPPING" },
- { WINBINDD_REMOVE_MAPPING, winbindd_remove_mapping, "REMOVE_MAPPING" },
- { WINBINDD_SET_HWM, winbindd_set_hwm, "SET_HWMS" },
-
- /* Miscellaneous */
-
- { WINBINDD_CHECK_MACHACC, winbindd_check_machine_acct, "CHECK_MACHACC" },
- { WINBINDD_PING, winbindd_ping, "PING" },
- { 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" },
- { WINBINDD_GETDCNAME, winbindd_getdcname, "GETDCNAME" },
- { WINBINDD_DSGETDCNAME, winbindd_dsgetdcname, "DSGETDCNAME" },
-
- /* Credential cache access */
- { WINBINDD_CCACHE_NTLMAUTH, winbindd_ccache_ntlm_auth, "NTLMAUTH" },
-
- /* 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_request *request);
- NTSTATUS (*recv_req)(struct tevent_req *req, TALLOC_CTX *mem_ctx,
- struct winbindd_response **presp);
-};
-
-static struct winbindd_async_dispatch_table async_nonpriv_table[] = {
- { WINBINDD_PING, "PING",
- wb_ping_send, wb_ping_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;
-
- ZERO_STRUCT(state->response);
-
- state->response.result = WINBINDD_PENDING;
- state->response.length = sizeof(struct winbindd_response);
-
- state->mem_ctx = talloc_init("winbind request");
- if (state->mem_ctx == NULL)
- return;
-
- /* Remember who asked us. */
- state->pid = state->request->pid;
-
- /* Process command */
-
- for (atable = async_nonpriv_table; atable->send_req; atable += 1) {
- if (state->request->cmd == atable->cmd) {
- break;
- }
- }
-
- if (atable->send_req != NULL) {
- struct tevent_req *req;
-
- DEBUG(10, ("process_request: Handling async request %s\n",
- atable->cmd_name));
-
- req = atable->send_req(state->mem_ctx, winbind_event_context(),
- 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);
- state->recv_fn = atable->recv_req;
- return;
- }
-
- 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 ));
- 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;
- struct winbindd_response *response;
-
- status = state->recv_fn(req, state->mem_ctx, &response);
- TALLOC_FREE(req);
- if (!NT_STATUS_IS_OK(status)) {
- DEBUG(10, ("returning %s\n", nt_errstr(status)));
- request_error(state);
- }
- state->response = *response;
- state->response.result = WINBINDD_PENDING;
- state->response.length = sizeof(struct winbindd_response);
- 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) {
- state->finished = true;
- 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) {
- DEBUG(2, ("Could not write response to client: %s\n",
- strerror(err)));
- state->finished = true;
- return;
- }
-
- TALLOC_FREE(state->mem_ctx);
-
- req = wb_req_read_send(state, winbind_event_context(), state->sock,
- WINBINDD_MAX_EXTRA_DATA);
- if (req == NULL) {
- state->finished = true;
- 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);
- if (ret == -1) {
- DEBUG(2, ("Could not read client request: %s\n",
- strerror(err)));
- state->finished = true;
- 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;
- }
-
- /* tell client, we are closing ... */
- nwritten = write(state->sock, &c, sizeof(c));
- if (nwritten == -1) {
- /*
- * ignore EPIPE error here, because the other end might
- * have already closed the socket.
- */
- if (errno != EPIPE) {
- DEBUG(2, ("final write to client failed: %s\n",
- strerror(errno)));
- }
- }
-
- /* Close socket */
-
- close(state->sock);
-
- /* Free any getent state */
-
- free_getent_state(state->getpwent_state);
- free_getent_state(state->getgrent_state);
-
- 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.result != WINBINDD_PENDING &&
- !state->getpwent_state && !state->getgrent_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;
- struct tevent_fd *fde;
-};
-
-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);
-}
-
-static bool winbindd_setup_listeners(void)
-{
- struct winbindd_listen_state *pub_state = NULL;
- struct winbindd_listen_state *priv_state = NULL;
-
- pub_state = talloc(winbind_event_context(),
- struct winbindd_listen_state);
- if (!pub_state) {
- goto failed;
- }
-
- pub_state->privileged = false;
- pub_state->fd = open_winbindd_socket();
- if (pub_state->fd == -1) {
- goto failed;
- }
-
- pub_state->fde = tevent_add_fd(winbind_event_context(),
- pub_state, pub_state->fd,
- TEVENT_FD_READ,
- winbindd_listen_fde_handler,
- pub_state);
- if (!pub_state->fde) {
- close(pub_state->fd);
- goto failed;
- }
- tevent_fd_set_auto_close(pub_state->fde);
-
- priv_state = talloc(winbind_event_context(),
- struct winbindd_listen_state);
- if (!priv_state) {
- goto failed;
- }
-
- priv_state->privileged = true;
- priv_state->fd = open_winbindd_priv_socket();
- if (priv_state->fd == -1) {
- goto failed;
- }
-
- priv_state->fde = tevent_add_fd(winbind_event_context(),
- priv_state, priv_state->fd,
- TEVENT_FD_READ,
- winbindd_listen_fde_handler,
- priv_state);
- if (!priv_state->fde) {
- close(priv_state->fd);
- goto failed;
- }
- tevent_fd_set_auto_close(priv_state->fde);
-
- return true;
-failed:
- TALLOC_FREE(pub_state);
- TALLOC_FREE(priv_state);
- return false;
-}
-
-/* Process incoming clients on listen_sock. We use a tricky non-blocking,
- non-forking, non-threaded model which allows us to handle many
- simultaneous connections while remaining impervious to many denial of
- service attacks. */
-
-static void process_loop(void)
-{
- fd_set r_fds, w_fds;
- int maxfd = 0, selret;
- struct timeval timeout, ev_timeout;
-
- run_events(winbind_event_context(), 0, NULL, NULL);
-
- /* Initialise fd lists for select() */
-
- FD_ZERO(&r_fds);
- FD_ZERO(&w_fds);
-
- timeout.tv_sec = WINBINDD_ESTABLISH_LOOP;
- timeout.tv_usec = 0;
-
- /* Check for any event timeouts. */
- {
- struct timeval now;
- GetTimeOfDay(&now);
-
- event_add_to_select_args(winbind_event_context(), &now,
- &r_fds, &w_fds, &ev_timeout, &maxfd);
- }
- if (get_timed_events_timeout(winbind_event_context(), &ev_timeout)) {
- timeout = timeval_min(&timeout, &ev_timeout);
- }
-
- /* Call select */
-
- selret = sys_select(maxfd + 1, &r_fds, &w_fds, NULL, &timeout);
-
- if (selret == 0) {
- goto no_fds_ready;
- }
-
- if (selret == -1) {
- if (errno == EINTR) {
- goto no_fds_ready;
- }
-
- /* Select error, something is badly wrong */
-
- perror("select");
- exit(1);
- }
-
- /* selret > 0 */
-
- run_events(winbind_event_context(), selret, &r_fds, &w_fds);
-
- return;
-
- no_fds_ready:
-
- run_events(winbind_event_context(), selret, &r_fds, &w_fds);
-
-#if 0
- winbindd_check_cache_size(time(NULL));
-#endif
-}
-
bool winbindd_use_idmap_cache(void)
{
return !opt_nocache;
return !opt_nocache;
}
-/* Main function */
-
int main(int argc, char **argv, char **envp)
{
static bool is_daemon = False;
poptContext pc;
int opt;
TALLOC_CTX *frame = talloc_stackframe();
+ NTSTATUS status;
/* glibc (?) likes to print "User defined signal 1" and exit if a
SIGUSR[12] is received before a handler is installed */
exit(1);
}
- if (!reload_services_file(NULL)) {
+ if (!winbindd_reload_services_file(NULL)) {
DEBUG(0, ("error opening config file\n"));
exit(1);
}
return False;
}
- /* Enable netbios namecache */
-
- namecache_enable();
-
/* Unblock all signals we are interested in as they may have been
blocked by the parent process. */
BlockSignals(False, SIGCHLD);
if (!interactive)
- become_daemon(Fork, no_process_group);
+ become_daemon(Fork, no_process_group, log_stdout);
pidfile_create("winbindd");
* winbindd-specific resources we must free yet. JRA.
*/
- if (!NT_STATUS_IS_OK(reinit_after_fork(winbind_messaging_context(),
- winbind_event_context(),
- false))) {
+ status = reinit_after_fork(winbind_messaging_context(),
+ winbind_event_context(),
+ procid_self(), false);
+ if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("reinit_after_fork() failed\n"));
exit(1);
}
- /* 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 */
- claim_connection(NULL,"",FLAG_MSG_GENERAL|FLAG_MSG_DBWRAP);
-
- /* 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);
+ winbindd_register_handlers();
- /* Register handler for MSG_DEBUG. */
- messaging_register(winbind_messaging_context(), NULL,
- MSG_DEBUG,
- winbind_msg_debug);
+ rpc_lsarpc_init(NULL);
+ rpc_samr_init(NULL);
- 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"));
+ if (!init_system_info()) {
+ DEBUG(0,("ERROR: failed to setup system user info.\n"));
exit(1);
}
- init_idmap_child();
- init_locator_child();
-
- smb_nscd_flush_user_cache();
- smb_nscd_flush_group_cache();
-
/* setup listen sockets */
if (!winbindd_setup_listeners()) {
TALLOC_FREE(frame);
/* Loop waiting for requests */
while (1) {
- struct winbindd_cli_state *state;
-
frame = talloc_stackframe();
- /* refresh the trusted domain cache */
-
- rescan_trusted_domains();
-
- /* Dispose of client connection if it is marked as
- finished */
- state = winbindd_client_list();
- while (state) {
- struct winbindd_cli_state *next = state->next;
-
- if (state->finished) {
- remove_client(state);
- }
-
- state = next;
+ if (tevent_loop_once(winbind_event_context()) == -1) {
+ DEBUG(1, ("tevent_loop_once() failed: %s\n",
+ strerror(errno)));
+ return 1;
}
- process_loop();
-
TALLOC_FREE(frame);
}
git.samba.org / abartlet / samba.git / .git / blobdiff