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-rw-r--r--server/util/server.c433
1 files changed, 0 insertions, 433 deletions
diff --git a/server/util/server.c b/server/util/server.c
deleted file mode 100644
index fd6c4653..00000000
--- a/server/util/server.c
+++ /dev/null
@@ -1,433 +0,0 @@
-/*
- SSSD
-
- Servers setup routines
-
- Copyright (C) Andrew Tridgell 1992-2005
- Copyright (C) Martin Pool 2002
- Copyright (C) Jelmer Vernooij 2002
- Copyright (C) James J Myers 2003 <myersjj@samba.org>
- Copyright (C) Simo Sorce 2008
-
- 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/>.
-*/
-
-#define _GNU_SOURCE
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include "util/util.h"
-#include "ldb.h"
-#include "confdb/confdb.h"
-
-#ifdef HAVE_PRCTL
-#include <sys/prctl.h>
-#endif
-
-/*******************************************************************
- Close the low 3 fd's and open dev/null in their place.
-********************************************************************/
-static void close_low_fds(void)
-{
-#ifndef VALGRIND
- int fd;
- int i;
-
- close(0);
- close(1);
- close(2);
-
- /* try and use up these file descriptors, so silly
- library routines writing to stdout etc won't cause havoc */
- for (i=0;i<3;i++) {
- fd = open("/dev/null",O_RDWR,0);
- if (fd < 0)
- fd = open("/dev/null",O_WRONLY,0);
- if (fd < 0) {
- DEBUG(0,("Can't open /dev/null\n"));
- return;
- }
- if (fd != i) {
- DEBUG(0,("Didn't get file descriptor %d\n",i));
- return;
- }
- }
-#endif
-}
-
-/**
- Become a daemon, discarding the controlling terminal.
-**/
-
-void become_daemon(bool Fork)
-{
- int ret;
-
- if (Fork) {
- if (fork()) {
- _exit(0);
- }
- }
-
- /* detach from the terminal */
- setsid();
-
- /* chdir to / to be sure we're not on a remote filesystem */
- errno = 0;
- if(chdir("/") == -1) {
- ret = errno;
- DEBUG(0, ("Cannot change directory (%d [%s])\n",
- ret, strerror(ret)));
- return;
- }
-
- /* Close fd's 0,1,2. Needed if started by rsh */
- close_low_fds();
-}
-
-int pidfile(const char *path, const char *name)
-{
- char pid_str[32];
- pid_t pid;
- char *file;
- int fd;
- int ret, err;
-
- file = talloc_asprintf(NULL, "%s/%s.pid", path, name);
- if (!file) {
- return ENOMEM;
- }
-
- fd = open(file, O_RDONLY, 0644);
- err = errno;
- if (fd != -1) {
-
- pid_str[sizeof(pid_str) -1] = '\0';
- ret = read(fd, pid_str, sizeof(pid_str) -1);
- if (ret > 0) {
- /* let's check the pid */
-
- pid = (pid_t)atoi(pid_str);
- if (pid != 0) {
- errno = 0;
- ret = kill(pid, 0);
- /* succeeded in signaling the process -> another sssd process */
- if (ret == 0) {
- close(fd);
- talloc_free(file);
- return EEXIST;
- }
- if (ret != 0 && errno != ESRCH) {
- err = errno;
- close(fd);
- talloc_free(file);
- return err;
- }
- }
- }
-
- /* nothing in the file or no process */
- close(fd);
- unlink(file);
-
- } else {
- if (err != ENOENT) {
- talloc_free(file);
- return err;
- }
- }
-
- fd = open(file, O_CREAT | O_WRONLY | O_EXCL, 0644);
- err = errno;
- if (fd == -1) {
- talloc_free(file);
- return err;
- }
- talloc_free(file);
-
- memset(pid_str, 0, sizeof(pid_str));
- snprintf(pid_str, sizeof(pid_str) -1, "%u\n", (unsigned int) getpid());
-
- ret = write(fd, pid_str, strlen(pid_str));
- err = errno;
- if (ret != strlen(pid_str)) {
- close(fd);
- return err;
- }
-
- close(fd);
-
- return 0;
-}
-
-static void sig_hup(int sig)
-{
- /* cycle log/debug files */
- return;
-}
-
-static void sig_term(int sig)
-{
-#if HAVE_GETPGRP
- static int done_sigterm;
- if (done_sigterm == 0 && getpgrp() == getpid()) {
- DEBUG(0,("SIGTERM: killing children\n"));
- done_sigterm = 1;
- kill(-getpgrp(), SIGTERM);
- }
-#endif
- exit(0);
-}
-
-#ifndef HAVE_PRCTL
-static void sig_segv_abrt(int sig)
-{
-#if HAVE_GETPGRP
- static int done;
- if (done == 0 && getpgrp() == getpid()) {
- DEBUG(0,("%s: killing children\n", strsignal(sig)));
- done = 1;
- kill(-getpgrp(), SIGTERM);
- }
-#endif /* HAVE_GETPGRP */
- exit(1);
-}
-#endif /* HAVE_PRCTL */
-
-/*
- setup signal masks
-*/
-static void setup_signals(void)
-{
- /* we are never interested in SIGPIPE */
- BlockSignals(true, SIGPIPE);
-
-#if defined(SIGFPE)
- /* we are never interested in SIGFPE */
- BlockSignals(true, SIGFPE);
-#endif
-
- /* We are no longer interested in USR1 */
- BlockSignals(true, SIGUSR1);
-
-#if defined(SIGUSR2)
- /* We are no longer interested in USR2 */
- BlockSignals(true, SIGUSR2);
-#endif
-
- /* POSIX demands that signals are inherited. If the invoking process has
- * these signals masked, we will have problems, as we won't recieve them. */
- BlockSignals(false, SIGHUP);
- BlockSignals(false, SIGTERM);
-
- CatchSignal(SIGHUP, sig_hup);
- CatchSignal(SIGTERM, sig_term);
-
-#ifndef HAVE_PRCTL
- /* If prctl is not defined on the system, try to handle
- * some common termination signals gracefully */
- CatchSignal(SIGSEGV, sig_segv_abrt);
- CatchSignal(SIGABRT, sig_segv_abrt);
-#endif
-
-}
-
-/*
- handle io on stdin
-*/
-static void server_stdin_handler(struct tevent_context *event_ctx,
- struct tevent_fd *fde,
- uint16_t flags, void *private)
-{
- const char *binary_name = (const char *)private;
- uint8_t c;
- if (read(0, &c, 1) == 0) {
- DEBUG(0,("%s: EOF on stdin - terminating\n", binary_name));
-#if HAVE_GETPGRP
- if (getpgrp() == getpid()) {
- kill(-getpgrp(), SIGTERM);
- }
-#endif
- exit(0);
- }
-}
-
-/*
- main server helpers.
-*/
-
-int die_if_parent_died(void)
-{
-#ifdef HAVE_PRCTL
- int ret;
-
- errno = 0;
- ret = prctl(PR_SET_PDEATHSIG, SIGTERM, 0, 0, 0);
- if (ret != 0) {
- ret = errno;
- DEBUG(2, ("prctl failed [%d]: %s", ret, strerror(ret)));
- return ret;
- }
-#endif
- return EOK;
-}
-
-int server_setup(const char *name, int flags,
- const char *conf_entry,
- struct main_context **main_ctx)
-{
- struct tevent_context *event_ctx;
- struct main_context *ctx;
- uint16_t stdin_event_flags;
- char *conf_db;
- int ret = EOK;
- bool dt;
- bool dl;
-
- debug_prg_name = strdup(name);
- if (!debug_prg_name) {
- return ENOMEM;
- }
-
- setenv("_SSS_LOOPS", "NO", 0);
-
- setup_signals();
-
- /* we want default permissions on created files to be very strict,
- so set our umask to 0177 */
- umask(0177);
-
- if (flags & FLAGS_DAEMON) {
- DEBUG(3,("Becoming a daemon.\n"));
- become_daemon(true);
- }
-
- if (flags & FLAGS_PID_FILE) {
- ret = pidfile(PID_PATH, name);
- if (ret != EOK) {
- DEBUG(0, ("Error creating pidfile! (%d [%s])\n",
- ret, strerror(ret)));
- return ret;
- }
- }
-
- /* Set up locale */
- setlocale (LC_ALL, "");
- bindtextdomain (PACKAGE, LOCALEDIR);
- textdomain (PACKAGE);
-
- /* the event context is the top level structure.
- * Everything else should hang off that */
- event_ctx = tevent_context_init(talloc_autofree_context());
- if (event_ctx == NULL) {
- DEBUG(0,("The event context initialiaziton failed\n"));
- return 1;
- }
-
- ctx = talloc(event_ctx, struct main_context);
- if (ctx == NULL) {
- DEBUG(0,("Out of memory, aborting!\n"));
- return ENOMEM;
- }
-
- ctx->event_ctx = event_ctx;
-
- conf_db = talloc_asprintf(ctx, "%s/%s", DB_PATH, CONFDB_FILE);
- if (conf_db == NULL) {
- DEBUG(0,("Out of memory, aborting!\n"));
- return ENOMEM;
- }
-
- ret = confdb_init(ctx, &ctx->confdb_ctx, conf_db);
- if (ret != EOK) {
- DEBUG(0,("The confdb initialization failed\n"));
- return ret;
- }
-
- /* set debug level if any in conf_entry */
- ret = confdb_get_int(ctx->confdb_ctx, ctx, conf_entry,
- CONFDB_SERVICE_DEBUG_LEVEL,
- debug_level, &debug_level);
- if (ret != EOK) {
- DEBUG(0, ("Error reading from confdb (%d) [%s]\n",
- ret, strerror(ret)));
- return ret;
- }
-
- /* same for debug timestamps */
- dt = (debug_timestamps != 0);
- ret = confdb_get_bool(ctx->confdb_ctx, ctx, conf_entry,
- CONFDB_SERVICE_DEBUG_TIMESTAMPS,
- dt, &dt);
- if (ret != EOK) {
- DEBUG(0, ("Error reading from confdb (%d) [%s]\n",
- ret, strerror(ret)));
- return ret;
- }
- if (dt) debug_timestamps = 1;
-
- /* same for debug to file */
- dl = (debug_to_file != 0);
- ret = confdb_get_bool(ctx->confdb_ctx, ctx, conf_entry,
- CONFDB_SERVICE_DEBUG_TO_FILES,
- dl, &dl);
- if (ret != EOK) {
- DEBUG(0, ("Error reading from confdb (%d) [%s]\n",
- ret, strerror(ret)));
- return ret;
- }
- if (dl) debug_to_file = 1;
-
- /* open log file if told so */
- if (debug_to_file) {
- ret = open_debug_file();
- if (ret != EOK) {
- DEBUG(0, ("Error setting up logging (%d) [%s]\n",
- ret, strerror(ret)));
- return ret;
- }
- }
-
- DEBUG(3, ("CONFDB: %s\n", conf_db));
-
- if (flags & FLAGS_INTERACTIVE) {
- /* terminate when stdin goes away */
- stdin_event_flags = TEVENT_FD_READ;
- } else {
- /* stay alive forever */
- stdin_event_flags = 0;
- }
-
- /* catch EOF on stdin */
-#ifdef SIGTTIN
- signal(SIGTTIN, SIG_IGN);
-#endif
- tevent_add_fd(event_ctx, event_ctx, 0, stdin_event_flags,
- server_stdin_handler, discard_const(name));
-
- *main_ctx = ctx;
- return EOK;
-}
-
-void server_loop(struct main_context *main_ctx)
-{
- /* wait for events - this is where the server sits for most of its
- life */
- tevent_loop_wait(main_ctx->event_ctx);
-
- /* as everything hangs off this event context, freeing it
- should initiate a clean shutdown of all services */
- talloc_free(main_ctx->event_ctx);
-}
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