/*
process.c -- process management functions
- Copyright (C) 1999-2003 Ivo Timmermans <ivo@o2w.nl>,
- 2000-2003 Guus Sliepen <guus@sliepen.eu.org>
+ Copyright (C) 1999-2005 Ivo Timmermans,
+ 2000-2015 Guus Sliepen <guus@tinc-vpn.org>
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
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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- $Id: process.c,v 1.1.2.64 2003/08/08 12:55:05 guus Exp $
+ You should have received a copy of the GNU General Public License along
+ with this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "system.h"
#include "device.h"
#include "edge.h"
#include "logger.h"
+#include "net.h"
#include "node.h"
#include "pidfile.h"
#include "process.h"
extern char *pidfilename;
extern char **g_argv;
extern bool use_logfile;
-extern volatile bool running;
-
-sigset_t emptysigset;
-static int saved_debug_level = -1;
+#ifndef HAVE_MINGW
+static sigset_t emptysigset;
+#endif
-static void memory_full(int size)
-{
- logger(LOG_ERR, _("Memory exhausted (couldn't allocate %d bytes), exitting."), size);
- cp_trace();
+static void memory_full(int size) {
+ logger(LOG_ERR, "Memory exhausted (couldn't allocate %d bytes), exitting.", size);
exit(1);
}
/* Some functions the less gifted operating systems might lack... */
-#ifndef HAVE_FCLOSEALL
-static int fcloseall(void)
-{
- fflush(stdin);
- fflush(stdout);
- fflush(stderr);
- fclose(stdin);
- fclose(stdout);
- fclose(stderr);
- return 0;
-}
-#endif
-
#ifdef HAVE_MINGW
extern char *identname;
extern char *program_name;
static SERVICE_STATUS_HANDLE statushandle = 0;
bool install_service(void) {
- char command[4096] = "";
+ char command[4096] = "\"";
char **argp;
+ bool space;
+ SERVICE_DESCRIPTION description = {"Virtual Private Network daemon"};
manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
if(!manager) {
- logger(LOG_ERR, _("Could not open service manager: %s"), winerror(GetLastError()));
+ logger(LOG_ERR, "Could not open service manager: %s", winerror(GetLastError()));
return false;
}
if(!strchr(program_name, '\\')) {
- GetCurrentDirectory(sizeof(command), command);
- strncat(command, "\\", sizeof(command));
+ GetCurrentDirectory(sizeof command - 1, command + 1);
+ strncat(command, "\\", sizeof command - strlen(command));
}
- strncat(command, program_name, sizeof(command));
+ strncat(command, program_name, sizeof command - strlen(command));
+
+ strncat(command, "\"", sizeof command - strlen(command));
+
for(argp = g_argv + 1; *argp; argp++) {
- strncat(command, " ", sizeof(command));
- strncat(command, *argp, sizeof(command));
+ space = strchr(*argp, ' ');
+ strncat(command, " ", sizeof command - strlen(command));
+
+ if(space)
+ strncat(command, "\"", sizeof command - strlen(command));
+
+ strncat(command, *argp, sizeof command - strlen(command));
+
+ if(space)
+ strncat(command, "\"", sizeof command - strlen(command));
}
service = CreateService(manager, identname, identname,
SERVICE_ALL_ACCESS, SERVICE_WIN32_OWN_PROCESS, SERVICE_AUTO_START, SERVICE_ERROR_NORMAL,
- command, "NDIS", NULL, NULL, NULL, NULL);
+ command, NULL, NULL, NULL, NULL, NULL);
if(!service) {
- logger(LOG_ERR, _("Could not create %s service: %s"), identname, winerror(GetLastError()));
- return false;
+ DWORD lasterror = GetLastError();
+ logger(LOG_ERR, "Could not create %s service: %s", identname, winerror(lasterror));
+ if(lasterror != ERROR_SERVICE_EXISTS)
+ return false;
}
- logger(LOG_INFO, _("%s service installed"), identname);
+ if(service) {
+ ChangeServiceConfig2(service, SERVICE_CONFIG_DESCRIPTION, &description);
+ logger(LOG_INFO, "%s service installed", identname);
+ } else {
+ service = OpenService(manager, identname, SERVICE_ALL_ACCESS);
+ }
if(!StartService(service, 0, NULL))
- logger(LOG_WARNING, _("Could not start %s service: %s"), identname, winerror(GetLastError()));
+ logger(LOG_WARNING, "Could not start %s service: %s", identname, winerror(GetLastError()));
else
- logger(LOG_INFO, _("%s service started"), identname);
+ logger(LOG_INFO, "%s service started", identname);
return true;
}
bool remove_service(void) {
manager = OpenSCManager(NULL, NULL, SC_MANAGER_ALL_ACCESS);
if(!manager) {
- logger(LOG_ERR, _("Could not open service manager: %s"), winerror(GetLastError()));
+ logger(LOG_ERR, "Could not open service manager: %s", winerror(GetLastError()));
return false;
}
service = OpenService(manager, identname, SERVICE_ALL_ACCESS);
if(!service) {
- logger(LOG_ERR, _("Could not open %s service: %s"), identname, winerror(GetLastError()));
+ logger(LOG_ERR, "Could not open %s service: %s", identname, winerror(GetLastError()));
return false;
}
if(!ControlService(service, SERVICE_CONTROL_STOP, &status))
- logger(LOG_ERR, _("Could not stop %s service: %s"), identname, winerror(GetLastError()));
+ logger(LOG_ERR, "Could not stop %s service: %s", identname, winerror(GetLastError()));
else
- logger(LOG_INFO, _("%s service stopped"), identname);
+ logger(LOG_INFO, "%s service stopped", identname);
if(!DeleteService(service)) {
- logger(LOG_ERR, _("Could not remove %s service: %s"), identname, winerror(GetLastError()));
+ logger(LOG_ERR, "Could not remove %s service: %s", identname, winerror(GetLastError()));
return false;
}
- logger(LOG_INFO, _("%s service removed"), identname);
+ logger(LOG_INFO, "%s service removed", identname);
return true;
}
DWORD WINAPI controlhandler(DWORD request, DWORD type, LPVOID boe, LPVOID bah) {
switch(request) {
+ case SERVICE_CONTROL_INTERROGATE:
+ SetServiceStatus(statushandle, &status);
+ return NO_ERROR;
case SERVICE_CONTROL_STOP:
- logger(LOG_NOTICE, _("Got %s request"), "SERVICE_CONTROL_STOP");
- running = false;
+ logger(LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_STOP");
break;
case SERVICE_CONTROL_SHUTDOWN:
- logger(LOG_NOTICE, _("Got %s request"), "SERVICE_CONTROL_SHUTDOWN");
- running = false;
+ logger(LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_SHUTDOWN");
break;
default:
- logger(LOG_WARNING, _("Got unexpected request %d"), request);
+ logger(LOG_WARNING, "Got unexpected request %d", (int)request);
return ERROR_CALL_NOT_IMPLEMENTED;
}
- if(!running) {
+ if(running) {
+ running = false;
status.dwWaitHint = 30000;
status.dwCurrentState = SERVICE_STOP_PENDING;
SetServiceStatus(statushandle, &status);
+ return NO_ERROR;
+ } else {
+ status.dwWaitHint = 0;
+ status.dwCurrentState = SERVICE_STOPPED;
+ SetServiceStatus(statushandle, &status);
+ exit(1);
}
- return NO_ERROR;
}
-VOID WINAPI run_service(DWORD argc, LPTSTR* argv)
-{
- int err = 1;
+VOID WINAPI run_service(DWORD argc, LPTSTR* argv) {
extern int main2(int argc, char **argv);
-
status.dwServiceType = SERVICE_WIN32;
status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
status.dwWin32ExitCode = 0;
statushandle = RegisterServiceCtrlHandlerEx(identname, controlhandler, NULL);
if (!statushandle) {
- logger(LOG_ERR, _("System call `%s' failed: %s"), "RegisterServiceCtrlHandlerEx", winerror(GetLastError()));
- err = 1;
+ logger(LOG_ERR, "System call `%s' failed: %s", "RegisterServiceCtrlHandlerEx", winerror(GetLastError()));
} else {
status.dwWaitHint = 30000;
status.dwCurrentState = SERVICE_START_PENDING;
status.dwCurrentState = SERVICE_RUNNING;
SetServiceStatus(statushandle, &status);
- err = main2(argc, argv);
+ main2(argc, argv);
status.dwWaitHint = 0;
status.dwCurrentState = SERVICE_STOPPED;
- //status.dwWin32ExitCode = err;
SetServiceStatus(statushandle, &status);
}
return false;
}
else
- logger(LOG_ERR, _("System call `%s' failed: %s"), "StartServiceCtrlDispatcher", winerror(GetLastError()));
+ logger(LOG_ERR, "System call `%s' failed: %s", "StartServiceCtrlDispatcher", winerror(GetLastError()));
}
return true;
/*
check for an existing tinc for this net, and write pid to pidfile
*/
-static bool write_pidfile(void)
-{
- int pid;
-
- cp();
+static bool write_pidfile(void) {
+ pid_t pid;
pid = check_pid(pidfilename);
if(pid) {
if(netname)
- fprintf(stderr, _("A tincd is already running for net `%s' with pid %d.\n"),
- netname, pid);
+ fprintf(stderr, "A tincd is already running for net `%s' with pid %ld.\n",
+ netname, (long)pid);
else
- fprintf(stderr, _("A tincd is already running with pid %d.\n"), pid);
+ fprintf(stderr, "A tincd is already running with pid %ld.\n", (long)pid);
return false;
}
/* if it's locked, write-protected, or whatever */
- if(!write_pid(pidfilename))
+ if(!write_pid(pidfilename)) {
+ fprintf(stderr, "Couldn't write pid file %s: %s\n", pidfilename, strerror(errno));
return false;
+ }
return true;
}
/*
kill older tincd for this net
*/
-bool kill_other(int signal)
-{
+bool kill_other(int signal) {
#ifndef HAVE_MINGW
- int pid;
-
- cp();
+ pid_t pid;
pid = read_pid(pidfilename);
if(!pid) {
if(netname)
- fprintf(stderr, _("No other tincd is running for net `%s'.\n"),
+ fprintf(stderr, "No other tincd is running for net `%s'.\n",
netname);
else
- fprintf(stderr, _("No other tincd is running.\n"));
+ fprintf(stderr, "No other tincd is running.\n");
return false;
}
/* ESRCH is returned when no process with that pid is found */
if(kill(pid, signal) && errno == ESRCH) {
if(netname)
- fprintf(stderr, _("The tincd for net `%s' is no longer running. "),
+ fprintf(stderr, "The tincd for net `%s' is no longer running. ",
netname);
else
- fprintf(stderr, _("The tincd is no longer running. "));
+ fprintf(stderr, "The tincd is no longer running. ");
- fprintf(stderr, _("Removing stale lock file.\n"));
+ fprintf(stderr, "Removing stale lock file.\n");
remove_pid(pidfilename);
}
/*
Detach from current terminal, write pidfile, kill parent
*/
-bool detach(void)
-{
- cp();
-
+bool detach(void) {
setup_signals();
/* First check if we can open a fresh new pidfile */
if(do_detach) {
#ifndef HAVE_MINGW
if(daemon(0, 0)) {
- fprintf(stderr, _("Couldn't detach from terminal: %s"),
+ fprintf(stderr, "Couldn't detach from terminal: %s",
strerror(errno));
return false;
}
/* Now UPDATE the pid in the pidfile, because we changed it... */
- if(!write_pid(pidfilename))
+ if(!write_pid(pidfilename)) {
+ fprintf(stderr, "Could not write pid file %s: %s\n", pidfilename, strerror(errno));
return false;
+ }
#else
if(!statushandle)
exit(install_service());
openlogger(identname, use_logfile?LOGMODE_FILE:(do_detach?LOGMODE_SYSLOG:LOGMODE_STDERR));
- logger(LOG_NOTICE, _("tincd %s (%s %s) starting, debug level %d"),
+ logger(LOG_NOTICE, "tincd %s (%s %s) starting, debug level %d",
VERSION, __DATE__, __TIME__, debug_level);
xalloc_fail_func = memory_full;
return true;
}
-#ifdef HAVE_FORK
-/*
- Execute the program name, with sane environment.
-*/
-static void _execute_script(const char *scriptname, char **envp)
- __attribute__ ((__noreturn__));
-static void _execute_script(const char *scriptname, char **envp)
-{
- int save_errno;
-
- cp();
-
- while(*envp)
- putenv(*envp++);
-
- chdir("/");
-
- closelogger();
-
- /* Close all file descriptors */
- fcloseall();
-
- execl(scriptname, scriptname, NULL);
- /* No return on success */
-
- save_errno = errno;
-
- openlogger(identname, use_logfile?LOGMODE_FILE:(do_detach?LOGMODE_SYSLOG:LOGMODE_STDERR));
- logger(LOG_ERR, _("Could not execute `%s': %s"), scriptname,
- strerror(save_errno));
- exit(save_errno);
+#ifdef HAVE_PUTENV
+void unputenv(char *p) {
+ char *e = strchr(p, '=');
+ if(!e)
+ return;
+ int len = e - p;
+#ifndef HAVE_UNSETENV
+#ifdef HAVE_MINGW
+ // Windows requires putenv("FOO=") to unset %FOO%
+ len++;
+#endif
+#endif
+ char var[len + 1];
+ memcpy(var, p, len);
+ var[len] = 0;
+#ifdef HAVE_UNSETENV
+ unsetenv(var);
+#else
+ // We must keep what we putenv() around in memory.
+ // To do this without memory leaks, keep things in a list and reuse if possible.
+ static list_t list = {};
+ for(list_node_t *node = list.head; node; node = node->next) {
+ char *data = node->data;
+ if(!strcmp(data, var)) {
+ putenv(data);
+ return;
+ }
+ }
+ char *data = xstrdup(var);
+ list_insert_tail(&list, data);
+ putenv(data);
+#endif
}
+#else
+void putenv(const char *p) {}
+void unputenv(const char *p) {}
#endif
-/*
- Fork and execute the program pointed to by name.
-*/
-bool execute_script(const char *name, char **envp)
-{
-#ifdef HAVE_FORK
- pid_t pid;
- int status;
- struct stat s;
+bool execute_script(const char *name, char **envp) {
+#ifdef HAVE_SYSTEM
char *scriptname;
+ char *interpreter = NULL;
+ config_t *cfg_interpreter;
+ int status, len, i;
- cp();
+ cfg_interpreter = lookup_config(config_tree, "ScriptsInterpreter");
+#ifndef HAVE_MINGW
+ len = xasprintf(&scriptname, "\"%s/%s\"", confbase, name);
+#else
+ if(cfg_interpreter)
+ len = xasprintf(&scriptname, "\"%s/%s\"", confbase, name);
+ else
+ len = xasprintf(&scriptname, "\"%s/%s.bat\"", confbase, name);
+#endif
+ if(len < 0)
+ return false;
- asprintf(&scriptname, "%s/%s", confbase, name);
+ scriptname[len - 1] = '\0';
/* First check if there is a script */
-
- if(stat(scriptname, &s))
+ if(access(scriptname + 1, F_OK)) {
+ free(scriptname);
return true;
+ }
- pid = fork();
-
- if(pid < 0) {
- logger(LOG_ERR, _("System call `%s' failed: %s"), "fork",
- strerror(errno));
- return false;
+ // Custom scripts interpreter
+ if(get_config_string(cfg_interpreter, &interpreter)) {
+ // Force custom scripts interpreter allowing execution of scripts on android without execution flag (such as on /sdcard)
+ free(scriptname);
+ len = xasprintf(&scriptname, "%s \"%s/%s\"", interpreter, confbase, name);
+ free(interpreter);
+ if(len < 0)
+ return false;
}
- if(pid) {
- ifdebug(STATUS) logger(LOG_INFO, _("Executing script %s"), name);
+ ifdebug(STATUS) logger(LOG_INFO, "Executing script %s", name);
- free(scriptname);
+ /* Set environment */
+
+ for(i = 0; envp[i]; i++)
+ putenv(envp[i]);
- if(waitpid(pid, &status, 0) == pid) {
- if(WIFEXITED(status)) { /* Child exited by itself */
- if(WEXITSTATUS(status)) {
- logger(LOG_ERR, _("Process %d (%s) exited with non-zero status %d"),
- pid, name, WEXITSTATUS(status));
- return false;
- } else
- return true;
- } else if(WIFSIGNALED(status)) { /* Child was killed by a signal */
- logger(LOG_ERR, _("Process %d (%s) was killed by signal %d (%s)"), pid,
- name, WTERMSIG(status), strsignal(WTERMSIG(status)));
- return false;
- } else { /* Something strange happened */
- logger(LOG_ERR, _("Process %d (%s) terminated abnormally"), pid,
- name);
+ scriptname[len - 1] = '\"';
+ status = system(scriptname);
+
+ free(scriptname);
+
+ /* Unset environment */
+
+ for(i = 0; envp[i]; i++)
+ unputenv(envp[i]);
+
+ if(status != -1) {
+#ifdef WEXITSTATUS
+ if(WIFEXITED(status)) { /* Child exited by itself */
+ if(WEXITSTATUS(status)) {
+ logger(LOG_ERR, "Script %s exited with non-zero status %d",
+ name, WEXITSTATUS(status));
return false;
}
- } else if (errno != EINTR) {
- logger(LOG_ERR, _("System call `%s' failed: %s"), "waitpid",
- strerror(errno));
+ } else if(WIFSIGNALED(status)) { /* Child was killed by a signal */
+ logger(LOG_ERR, "Script %s was killed by signal %d (%s)",
+ name, WTERMSIG(status), strsignal(WTERMSIG(status)));
+ return false;
+ } else { /* Something strange happened */
+ logger(LOG_ERR, "Script %s terminated abnormally", name);
return false;
}
-
- /* Why do we get EINTR? */
- return true;
+#endif
+ } else {
+ logger(LOG_ERR, "System call `%s' failed: %s", "system", strerror(errno));
+ return false;
}
-
- /* Child here */
-
- _execute_script(scriptname, envp);
-#else
- return true;
#endif
+ return true;
}
*/
#ifndef HAVE_MINGW
-static RETSIGTYPE sigterm_handler(int a)
-{
- logger(LOG_NOTICE, _("Got %s signal"), "TERM");
- running = false;
+static RETSIGTYPE sigterm_handler(int a) {
+ logger(LOG_NOTICE, "Got %s signal", "TERM");
+ if(running)
+ running = false;
+ else
+ exit(1);
}
-static RETSIGTYPE sigquit_handler(int a)
-{
- logger(LOG_NOTICE, _("Got %s signal"), "QUIT");
- running = false;
+static RETSIGTYPE sigquit_handler(int a) {
+ logger(LOG_NOTICE, "Got %s signal", "QUIT");
+ if(running)
+ running = false;
+ else
+ exit(1);
}
-static RETSIGTYPE fatal_signal_square(int a)
-{
- logger(LOG_ERR, _("Got another fatal signal %d (%s): not restarting."), a,
+static RETSIGTYPE fatal_signal_square(int a) {
+ logger(LOG_ERR, "Got another fatal signal %d (%s): not restarting.", a,
strsignal(a));
- cp_trace();
exit(1);
}
-static RETSIGTYPE fatal_signal_handler(int a)
-{
+static RETSIGTYPE fatal_signal_handler(int a) {
struct sigaction act;
- logger(LOG_ERR, _("Got fatal signal %d (%s)"), a, strsignal(a));
- cp_trace();
+ logger(LOG_ERR, "Got fatal signal %d (%s)", a, strsignal(a));
if(do_detach) {
- logger(LOG_NOTICE, _("Trying to re-execute in 5 seconds..."));
+ logger(LOG_NOTICE, "Trying to re-execute in 5 seconds...");
act.sa_handler = fatal_signal_square;
act.sa_mask = emptysigset;
remove_pid(pidfilename);
execvp(g_argv[0], g_argv);
} else {
- logger(LOG_NOTICE, _("Not restarting."));
+ logger(LOG_NOTICE, "Not restarting.");
exit(1);
}
}
-static RETSIGTYPE sighup_handler(int a)
-{
- logger(LOG_NOTICE, _("Got %s signal"), "HUP");
+static RETSIGTYPE sighup_handler(int a) {
+ logger(LOG_NOTICE, "Got %s signal", "HUP");
sighup = true;
}
-static RETSIGTYPE sigint_handler(int a)
-{
- logger(LOG_NOTICE, _("Got %s signal"), "INT");
+static RETSIGTYPE sigint_handler(int a) {
+ static int saved_debug_level = -1;
+
+ logger(LOG_NOTICE, "Got %s signal", "INT");
if(saved_debug_level != -1) {
- logger(LOG_NOTICE, _("Reverting to old debug level (%d)"),
+ logger(LOG_NOTICE, "Reverting to old debug level (%d)",
saved_debug_level);
debug_level = saved_debug_level;
saved_debug_level = -1;
} else {
logger(LOG_NOTICE,
- _("Temporarily setting debug level to 5. Kill me with SIGINT again to go back to level %d."),
+ "Temporarily setting debug level to 5. Kill me with SIGINT again to go back to level %d.",
debug_level);
saved_debug_level = debug_level;
debug_level = 5;
}
}
-static RETSIGTYPE sigalrm_handler(int a)
-{
- logger(LOG_NOTICE, _("Got %s signal"), "ALRM");
+static RETSIGTYPE sigalrm_handler(int a) {
+ logger(LOG_NOTICE, "Got %s signal", "ALRM");
sigalrm = true;
}
-static RETSIGTYPE sigusr1_handler(int a)
-{
+static RETSIGTYPE sigusr1_handler(int a) {
dump_connections();
}
-static RETSIGTYPE sigusr2_handler(int a)
-{
- dump_device_stats();
+static RETSIGTYPE sigusr2_handler(int a) {
+ devops.dump_stats();
dump_nodes();
dump_edges();
dump_subnets();
}
-static RETSIGTYPE sigwinch_handler(int a)
-{
+static RETSIGTYPE sigwinch_handler(int a) {
do_purge = true;
}
-static RETSIGTYPE unexpected_signal_handler(int a)
-{
- logger(LOG_WARNING, _("Got unexpected signal %d (%s)"), a, strsignal(a));
- cp_trace();
+static RETSIGTYPE unexpected_signal_handler(int a) {
+ logger(LOG_WARNING, "Got unexpected signal %d (%s)", a, strsignal(a));
}
-static RETSIGTYPE ignore_signal_handler(int a)
-{
- ifdebug(SCARY_THINGS) logger(LOG_DEBUG, _("Ignored signal %d (%s)"), a, strsignal(a));
+static RETSIGTYPE ignore_signal_handler(int a) {
+ ifdebug(SCARY_THINGS) logger(LOG_DEBUG, "Ignored signal %d (%s)", a, strsignal(a));
}
static struct {
{SIGCHLD, ignore_signal_handler},
{SIGALRM, sigalrm_handler},
{SIGWINCH, sigwinch_handler},
+ {SIGABRT, SIG_DFL},
{0, NULL}
};
#endif
-void setup_signals(void)
-{
+void setup_signals(void) {
#ifndef HAVE_MINGW
int i;
struct sigaction act;
/* Set a default signal handler for every signal, errors will be
ignored. */
- for(i = 0; i < NSIG; i++) {
+ for(i = 1; i < NSIG; i++) {
if(!do_detach)
act.sa_handler = SIG_DFL;
else
for(i = 0; sighandlers[i].signal; i++) {
act.sa_handler = sighandlers[i].handler;
if(sigaction(sighandlers[i].signal, &act, NULL) < 0)
- fprintf(stderr, _("Installing signal handler for signal %d (%s) failed: %s\n"),
+ fprintf(stderr, "Installing signal handler for signal %d (%s) failed: %s\n",
sighandlers[i].signal, strsignal(sighandlers[i].signal),
strerror(errno));
}
projects / tinc / blobdiff