int main(int argc, char **argv) { int facility = LOG_DEST; int daemon = 0; int lockfd = -1; const char *userarg = 0; const char *grouparg = 0; int droproot=0; if (argc == 2 && argv[1][0] != '-') { /* backwards-compatibility mode */ close(1); close(2); checkfd(open("/dev/null", O_WRONLY), 1); checkfd(open("/dev/null", O_WRONLY), 2); do_logger(argv[1], facility, stdin); exit(0); } if (argc <= 1) { fprintf(stderr, "Usage: courierlogger [-name=name] [-pid=pidfile] [-facility=type]\n" " [-start|-stop|-restart] [cmd [args...]]\n" ); exit(1); } argv++, argc--; while (argc > 0 && argv[0][0]=='-') { if (strncmp(argv[0],"-pid=",5) == 0 && argv[0][5]) { pidarg=&argv[0][5]; lockfilename=malloc(strlen(pidarg)+sizeof(".lock")); if (!lockfilename) { perror("malloc"); exit(1); } strcat(strcpy(lockfilename, pidarg), ".lock"); } else if (strncmp(argv[0],"-name=",6) == 0 && argv[0][6]) namearg=&argv[0][6]; else if (strncmp(argv[0],"-user="******"-group=",7) == 0) grouparg=argv[0]+7; else if (strcmp(argv[0], "-droproot") == 0) droproot=1; else if (strncmp(argv[0],"-facility=",10) == 0) { struct lognames *p = facilitynames; while (p->name && strcmp(p->name, &argv[0][10])) p++; if (p->name == 0) { fprintf(stderr, "Unknown facility name '%s'\n", &argv[0][10]); exit(1); } facility = p->value; } else if (strcmp(argv[0],"-start") == 0) daemon = 1; else if (strcmp(argv[0],"-stop") == 0) daemon = 2; else if (strcmp(argv[0],"-restart") == 0) daemon = 3; else if (strcmp(argv[0],"-respawn") == 0) respawn = 1; else { fprintf(stderr, "Unknown option '%s'\n", argv[0]); exit(1); } argv++, argc--; } if (daemon && !pidarg) { fprintf(stderr, "-pid argument required\n"); exit(1); } if (!daemon && pidarg) daemon = 1; /* -start implied */ if (!namearg && daemon != 2 && daemon != 3) { /* choose a default name based on the program we're running */ if (argc <= 0 || !argv[0] || !argv[0][0]) { fprintf(stderr, "-name option required for standalone logger\n"); exit(1); } namearg = strrchr(argv[0],'/'); namearg = namearg ? namearg+1 : argv[0]; } switch (daemon) { case 1: /* start */ if (argc <= 0 || !argv[0] || !argv[0][0]) { fprintf(stderr, "-start must be followed by a command to execute\n"); exit(1); } lockfd=ll_daemon_start(lockfilename); if (lockfd < 0) { perror("ll_daemon_start"); exit(1); } startchild(argv, droproot ? userarg:NULL, droproot ? grouparg:NULL); ll_daemon_started(pidarg, lockfd); break; case 2: /* stop */ exit(ll_daemon_stop(lockfilename, pidarg)); case 3: /* restart */ exit(ll_daemon_restart(lockfilename, pidarg)); default: /* run in foreground, with or without a child process */ if (argc > 0) startchild(argv, droproot ? userarg:NULL, droproot ? grouparg:NULL); } setuidgid(userarg, grouparg); while (1) { int waitstat; pid_t p2; FILE *f = fdopen(0, "r"); do_logger(namearg, facility, f); fclose(f); if (child_pid < 0) break; while ((p2=wait(&waitstat)) != child_pid && (p2 != -1 || errno != ECHILD)) ; if (hup_restart) hup_restart = 0; else if (respawn) sleep (5); else break; startchild(argv, NULL, NULL); } exit(0); }
int main(int argc, char **argv) { int argn=1; static const char * const authvars[]={NULL}; signal(SIGPIPE, SIG_IGN); umask(022); if (argn >= argc) { struct PCP *pcp; pcp=open_calendar(NULL); mainloop(pcp); exit(0); } maildir_cache_init(TIMEOUT * 2, CACHEDIR, LOCALCACHEOWNER, authvars); if (strcmp(argv[argn], "start") == 0) { struct group *gr; if (chdir(CALENDARDIR) < 0) { perror(CALENDARDIR); exit(1); } gr=getgrnam(MAILGROUP); if (!gr) { fprintf(stderr, "Unknown group: %s\n", MAILGROUP); exit(1); } authtoken_init(); libmail_changeuidgid(getuid(), gr->gr_gid); start(); } else if (strcmp(argv[argn], "login") == 0 || strcmp(argv[argn], "slogin") == 0) { struct PCP *pcp; int flag; struct group *gr; gr=getgrnam(MAILGROUP); if (!gr) { fprintf(stderr, "Unknown group: %s\n", MAILGROUP); exit(1); } libmail_changeuidgid(getuid(), gr->gr_gid); if (chdir(CALENDARDIR) < 0) { perror(CALENDARDIR); exit(1); } authtoken_init(); userid=login(strcmp(argv[argn], "login"), &flag); pcp=pcp_open_dir(".", userid); if (pcp && flag && pcp_cleanup(pcp)) { pcp_close(pcp); syslog(LOG_CRIT, "pcpd: pcp_cleanup failed"); pcp=NULL; } if (!pcp) { syslog(LOG_CRIT, "pcpd: pcp_open_dir failed"); perror("pcp_open_dir"); exit(1); } mainloop(pcp); exit(0); } else if (strcmp(argv[argn], "stop") == 0) { if (chdir(CALENDARDIR) < 0) { perror(CALENDARDIR); exit(1); } ll_daemon_stop(LOCKFILE, PIDFILE); exit(0); } else if (strcmp(argv[argn], "open") == 0) { ++argn; if (argn < argc) { struct PCP *pcp; pcp=open_calendar(argv[argn]); mainloop(pcp); exit(0); } } fprintf(stderr, "Usage: %s (start|stop|open [path])\n", argv[0]); exit(1); return (0); }