Only use broadcast at the start of the PMTU discovery phase.
[tinc] / src / process.c
index 326d3ff..f33355c 100644 (file)
@@ -1,7 +1,7 @@
 /*
     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,
+                  2000-2011 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 1.1.2.54 2003/07/12 17:41:46 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 "config.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/wait.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <termios.h>
-
-#include <pidfile.h>
-#include <utils.h>
-#include <xalloc.h>
+#include "system.h"
 
 #include "conf.h"
-#include "process.h"
-#include "subnet.h"
-#include "device.h"
 #include "connection.h"
 #include "device.h"
+#include "edge.h"
 #include "logger.h"
-
-#include "system.h"
+#include "net.h"
+#include "node.h"
+#include "pidfile.h"
+#include "process.h"
+#include "subnet.h"
+#include "utils.h"
+#include "xalloc.h"
 
 /* If zero, don't detach from the terminal. */
-int do_detach = 1;
+bool do_detach = true;
+bool sighup = false;
+bool sigalrm = false;
 
 extern char *identname;
 extern char *pidfilename;
 extern char **g_argv;
-extern int use_logfile;
+extern bool use_logfile;
 
-sigset_t emptysigset;
+#ifndef HAVE_MINGW
+static sigset_t emptysigset;
+#endif
 
 static int saved_debug_level = -1;
 
-extern int sighup;
-extern int sigalrm;
-extern int do_purge;
-
-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;
+#ifdef HAVE_MINGW
+extern char *identname;
+extern char *program_name;
+extern char **g_argv;
+
+static SC_HANDLE manager = NULL;
+static SC_HANDLE service = NULL;
+static SERVICE_STATUS status = {0};
+static SERVICE_STATUS_HANDLE statushandle = 0;
+
+bool install_service(void) {
+       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()));
+               return false;
+       }
+
+       if(!strchr(program_name, '\\')) {
+               GetCurrentDirectory(sizeof command - 1, command + 1);
+               strncat(command, "\\", sizeof command - strlen(command));
+       }
+
+       strncat(command, program_name, sizeof command - strlen(command));
+
+       strncat(command, "\"", sizeof command - strlen(command));
+
+       for(argp = g_argv + 1; *argp; argp++) {
+               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, NULL, NULL, NULL, NULL, NULL);
+       
+       if(!service) {
+               DWORD lasterror = GetLastError();
+               logger(LOG_ERR, "Could not create %s service: %s", identname, winerror(lasterror));
+               if(lasterror != ERROR_SERVICE_EXISTS)
+                       return false;
+       }
+
+       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()));
+       else
+               logger(LOG_INFO, "%s service started", identname);
+
+       return true;
 }
-#endif
 
-/*
-  Close network connections, and terminate neatly
-*/
-void cleanup_and_exit(int c)
-{
-       cp();
+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()));
+               return false;
+       }
+
+       service = OpenService(manager, identname, SERVICE_ALL_ACCESS);
 
-       close_network_connections();
+       if(!service) {
+               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()));
+       else
+               logger(LOG_INFO, "%s service stopped", identname);
+
+       if(!DeleteService(service)) {
+               logger(LOG_ERR, "Could not remove %s service: %s", identname, winerror(GetLastError()));
+               return false;
+       }
 
-       ifdebug(CONNECTIONS)
-               dump_device_stats();
+       logger(LOG_INFO, "%s service removed", identname);
 
-       logger(LOG_NOTICE, _("Terminating"));
+       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");
+                       break;
+               case SERVICE_CONTROL_SHUTDOWN:
+                       logger(LOG_NOTICE, "Got %s request", "SERVICE_CONTROL_SHUTDOWN");
+                       break;
+               default:
+                       logger(LOG_WARNING, "Got unexpected request %d", request);
+                       return ERROR_CALL_NOT_IMPLEMENTED;
+       }
+
+       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);
+       }
 
-       closelog();
-       exit(c);
 }
 
+VOID WINAPI run_service(DWORD argc, LPTSTR* argv) {
+       int err = 1;
+       extern int main2(int argc, char **argv);
+
+
+       status.dwServiceType = SERVICE_WIN32; 
+       status.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
+       status.dwWin32ExitCode = 0; 
+       status.dwServiceSpecificExitCode = 0; 
+       status.dwCheckPoint = 0; 
+
+       statushandle = RegisterServiceCtrlHandlerEx(identname, controlhandler, NULL); 
+
+       if (!statushandle) {
+               logger(LOG_ERR, "System call `%s' failed: %s", "RegisterServiceCtrlHandlerEx", winerror(GetLastError()));
+               err = 1;
+       } else {
+               status.dwWaitHint = 30000; 
+               status.dwCurrentState = SERVICE_START_PENDING; 
+               SetServiceStatus(statushandle, &status);
+
+               status.dwWaitHint = 0; 
+               status.dwCurrentState = SERVICE_RUNNING;
+               SetServiceStatus(statushandle, &status);
+
+               err = main2(argc, argv);
+
+               status.dwWaitHint = 0;
+               status.dwCurrentState = SERVICE_STOPPED; 
+               //status.dwWin32ExitCode = err; 
+               SetServiceStatus(statushandle, &status);
+       }
+
+       return;
+}
+
+bool init_service(void) {
+       SERVICE_TABLE_ENTRY services[] = {
+               {identname, run_service},
+               {NULL, NULL}
+       };
+
+       if(!StartServiceCtrlDispatcher(services)) {
+               if(GetLastError() == ERROR_FAILED_SERVICE_CONTROLLER_CONNECT) {
+                       return false;
+               }
+               else
+                       logger(LOG_ERR, "System call `%s' failed: %s", "StartServiceCtrlDispatcher", winerror(GetLastError()));
+       }
+
+       return true;
+}
+#endif
+
+#ifndef HAVE_MINGW
 /*
   check for an existing tinc for this net, and write pid to pidfile
 */
-static int 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);
-               return 1;
+                       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))
-               return 1;
+       if(!write_pid(pidfilename)) {
+               fprintf(stderr, "Could write pid file %s: %s\n", pidfilename, strerror(errno));
+               return false;
+       }
 
-       return 0;
+       return true;
 }
+#endif
 
 /*
   kill older tincd for this net
 */
-int kill_other(int signal)
-{
-       int pid;
-
-       cp();
+bool kill_other(int signal) {
+#ifndef HAVE_MINGW
+       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"));
-               return 1;
+                       fprintf(stderr, "No other tincd is running.\n");
+               return false;
        }
 
        errno = 0;                                      /* No error, sometimes errno is only changed on error */
@@ -157,153 +291,142 @@ int kill_other(int signal)
        /* 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);
        }
 
-       return 0;
+       return true;
+#else
+       return remove_service();
+#endif
 }
 
 /*
   Detach from current terminal, write pidfile, kill parent
 */
-int detach(void)
-{
-       cp();
-
+bool detach(void) {
        setup_signals();
 
        /* First check if we can open a fresh new pidfile */
 
-       if(write_pidfile())
-               return -1;
+#ifndef HAVE_MINGW
+       if(!write_pidfile())
+               return false;
 
        /* If we succeeded in doing that, detach */
 
-       closelog();
+       closelogger();
+#endif
 
        if(do_detach) {
-               if(daemon(0, 0) < 0) {
-                       fprintf(stderr, _("Couldn't detach from terminal: %s"),
+#ifndef HAVE_MINGW
+               if(daemon(0, 0)) {
+                       fprintf(stderr, "Couldn't detach from terminal: %s",
                                        strerror(errno));
-                       return -1;
+                       return false;
                }
 
                /* Now UPDATE the pid in the pidfile, because we changed it... */
 
-               if(!write_pid(pidfilename))
-                       return -1;
+               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());
+#endif
        }
 
        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 0;
+       return true;
 }
 
-/*
-  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();
+bool execute_script(const char *name, char **envp) {
+#ifdef HAVE_SYSTEM
+       int status, len;
+       char *scriptname;
+       int i;
 
-       execl(scriptname, NULL);
-       /* No return on success */
+#ifndef HAVE_MINGW
+       len = xasprintf(&scriptname, "\"%s/%s\"", confbase, name);
+#else
+       len = xasprintf(&scriptname, "\"%s/%s.bat\"", confbase, name);
+#endif
+       if(len < 0)
+               return false;
 
-       save_errno = errno;
+       scriptname[len - 1] = '\0';
 
-       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);
-}
+#ifndef HAVE_TUNEMU
+       /* First check if there is a script */
 
-/*
-  Fork and execute the program pointed to by name.
-*/
-int execute_script(const char *name, char **envp)
-{
-       pid_t pid;
-       int status;
-       struct stat s;
-       char *scriptname;
+       if(access(scriptname + 1, F_OK)) {
+               free(scriptname);
+               return true;
+       }
+#endif
 
-       cp();
+       ifdebug(STATUS) logger(LOG_INFO, "Executing script %s", name);
 
-       asprintf(&scriptname, "%s/%s", confbase, name);
+#ifdef HAVE_PUTENV
+       /* Set environment */
+       
+       for(i = 0; envp[i]; i++)
+               putenv(envp[i]);
+#endif
 
-       /* First check if there is a script */
+       scriptname[len - 1] = '\"';
+       status = system(scriptname);
 
-       if(stat(scriptname, &s))
-               return 0;
+       free(scriptname);
 
-       pid = fork();
+       /* Unset environment */
 
-       if(pid < 0) {
-               logger(LOG_ERR, _("System call `%s' failed: %s"), "fork",
-                          strerror(errno));
-               return -1;
+       for(i = 0; envp[i]; i++) {
+               char *e = strchr(envp[i], '=');
+               if(e) {
+                       char p[e - envp[i] + 1];
+                       strncpy(p, envp[i], e - envp[i]);
+                       p[e - envp[i]] = '\0';
+                       putenv(p);
+               }
        }
 
-       if(pid) {
-               ifdebug(STATUS) logger(LOG_INFO, _("Executing script %s"), name);
-
-               free(scriptname);
-
-               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 -1;
-                               } else
-                                       return 0;
-                       } 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 -1;
-                       } else {                        /* Something strange happened */
-                               logger(LOG_ERR, _("Process %d (%s) terminated abnormally"), pid,
-                                          name);
-                               return -1;
+#ifdef WEXITSTATUS
+       if(status != -1) {
+               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));
-                       return -1;
+               } 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 0;
+       } else {
+               logger(LOG_ERR, "System call `%s' failed: %s", "system", strerror(errno));
+               return false;
        }
-
-       /* Child here */
-
-       _execute_script(scriptname, envp);
+#endif
+#endif
+       return true;
 }
 
 
@@ -311,35 +434,35 @@ int execute_script(const char *name, char **envp)
   Signal handlers.
 */
 
-static RETSIGTYPE sigterm_handler(int a)
-{
-       logger(LOG_NOTICE, _("Got TERM signal"));
-
-       cleanup_and_exit(0);
+#ifndef HAVE_MINGW
+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 QUIT signal"));
-       cleanup_and_exit(0);
+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;
@@ -351,92 +474,85 @@ static RETSIGTYPE fatal_signal_handler(int a)
                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 HUP signal"));
-       sighup = 1;
+static RETSIGTYPE sighup_handler(int a) {
+       logger(LOG_NOTICE, "Got %s signal", "HUP");
+       sighup = true;
 }
 
-static RETSIGTYPE sigint_handler(int a)
-{
+static RETSIGTYPE sigint_handler(int a) {
+       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 ALRM signal"));
-       sigalrm = 1;
+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)
-{
-       extern int do_purge;
-       do_purge = 1;
+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 {
        int signal;
        void (*handler)(int);
 } sighandlers[] = {
-       {
-       SIGHUP, sighup_handler}, {
-       SIGTERM, sigterm_handler}, {
-       SIGQUIT, sigquit_handler}, {
-       SIGSEGV, fatal_signal_handler}, {
-       SIGBUS, fatal_signal_handler}, {
-       SIGILL, fatal_signal_handler}, {
-       SIGPIPE, ignore_signal_handler}, {
-       SIGINT, sigint_handler}, {
-       SIGUSR1, sigusr1_handler}, {
-       SIGUSR2, sigusr2_handler}, {
-       SIGCHLD, ignore_signal_handler}, {
-       SIGALRM, sigalrm_handler}, {
-       SIGWINCH, sigwinch_handler}, {
-       0, NULL}
+       {SIGHUP, sighup_handler},
+       {SIGTERM, sigterm_handler},
+       {SIGQUIT, sigquit_handler},
+       {SIGSEGV, fatal_signal_handler},
+       {SIGBUS, fatal_signal_handler},
+       {SIGILL, fatal_signal_handler},
+       {SIGPIPE, ignore_signal_handler},
+       {SIGINT, sigint_handler},
+       {SIGUSR1, sigusr1_handler},
+       {SIGUSR2, sigusr2_handler},
+       {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;
 
@@ -447,7 +563,7 @@ void setup_signals(void)
 
        /* 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
@@ -464,8 +580,9 @@ void setup_signals(void)
        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));
        }
+#endif
 }