7 * (c) 2001 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of Trivial IP Encryption (TrIPE).
14 * TrIPE is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
19 * TrIPE is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with TrIPE; if not, write to the Free Software Foundation,
26 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
29 /*----- Header files ------------------------------------------------------*/
41 #include <sys/types.h>
48 #include <sys/socket.h>
50 #include <arpa/inet.h>
53 #include <mLib/alloc.h>
54 #include <mLib/darray.h>
55 #include <mLib/dstr.h>
56 #include <mLib/mdwopt.h>
57 #include <mLib/quis.h>
58 #include <mLib/report.h>
60 #include <mLib/selbuf.h>
68 /*----- Data structures ---------------------------------------------------*/
72 DA_DECL(string_v, char *);
75 /*----- Static variables --------------------------------------------------*/
77 static const char *pidfile = 0;
78 static const char *logname = 0;
79 static FILE *logfp = 0;
80 static unsigned f = 0;
86 #define f_spawnopts 8u
93 /*----- Main code ---------------------------------------------------------*/
95 static void reap(int sig)
98 while (waitpid(-1, 0, WNOHANG) > 0)
103 static void writelog(const char *cat, const char *msg)
107 struct tm *tm = localtime(&t);
108 strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", tm);
109 fprintf(logfp, "%s %s: %s\n", buf, cat, msg);
112 static void cline(char *p, size_t len, void *b)
117 die(EXIT_FAILURE, "server dropped the connection");
123 if (strcmp(q, "WARN") == 0) {
125 syslog(LOG_WARNING, "%s", p);
127 writelog("warning", p);
129 fprintf(stderr, "Warning: %s\n", p);
130 } else if (strcmp(q, "TRACE") == 0) {
132 syslog(LOG_DEBUG, "%s", p);
134 writelog("debug", p);
135 } else if (!(f & f_command)) {
137 syslog(LOG_ERR, "unexpected output `%s %s'", q, p);
140 dstr_putf(&d, "unexpected output `%s %s'", q, p);
141 writelog("error", d.buf);
144 } else if (strcmp(q, "FAIL") == 0)
145 die(EXIT_FAILURE, "%s", p);
146 else if (strcmp(q, "INFO") == 0)
148 else if (strcmp(q, "OK") == 0)
151 die(EXIT_FAILURE, "unexpected output `%s %s'", q, p);
154 static void sline(char *p, size_t len, void *b)
158 moan("server closed the connection");
164 static void uline(char *p, size_t len, void *b)
172 write(fd, p, len + 1);
176 static void logfile(const char *name)
180 if ((fp = fopen(name, "a")) != 0) {
184 setvbuf(logfp, 0, _IOLBF, BUFSIZ);
187 dstr_putf(&d, "error opening logfile `%s': %s", name, strerror(errno));
189 writelog("error", d.buf);
191 die(EXIT_FAILURE, d.buf);
193 syslog(LOG_ERR, d.buf);
198 static void sighup(int sig, void *v)
203 static void cleanup(void)
209 static void sigdie(int sig)
212 signal(sig, SIG_DFL);
216 static void version(FILE *fp)
218 pquis(fp, "$, TrIPE version " VERSION "\n");
221 static void usage(FILE *fp)
225 $ [-w] [-OPTIONS] [COMMAND [ARGS]...]\n\
226 $ [-Dl] [-f FILE] [-OPTIONS]\n\
228 [-s] [-d DIRECTORY] [-a SOCKET] [-P PIDFILE]\n\
229 [-p PROGRAM] [-S ARG,ARG,...]\n\
233 static void help(FILE *fp)
242 -h, --help Show this help text.\n\
243 -v, --version Show version number.\n\
244 -u, --usage Show brief usage message.\n\
246 -D, --daemon Become a background task after connecting.\n\
247 -d, --directory=DIR Select current directory [default " CONFIGDIR "].\n\
248 -a, --admin-socket=FILE Select socket to connect to
249 [default " SOCKETDIR "/tripesock].\n\
250 -P, --pidfile=FILE Write process-id to FILE.\n\
252 -s, --spawn Start server rather than connecting.\n\
253 -p, --spawn-path=PATH Specify path to executable.\n\
254 -S, --spawn-args=ARGS Specify comma-separated arguments.\n\
256 -l, --syslog Log messages to system log.\n\
257 -f, --logfile=FILE Log messages to FILE.\n\
258 -w, --warnings Show warnings when running commands.\n\
262 int main(int argc, char *argv[])
264 const char *dir = CONFIGDIR;
265 const char *sock = SOCKETDIR "/tripesock";
266 const char *spawnpath = "tripe";
267 string_v spawnopts = DA_INIT;
273 if ((p = getenv("TRIPEDIR")) != 0)
276 /* --- Parse the arguments --- */
279 static const struct option opts[] = {
280 { "help", 0, 0, 'h' },
281 { "version", 0, 0, 'v' },
282 { "usage", 0, 0, 'u' },
283 { "daemon", 0, 0, 'D' },
284 { "directory", OPTF_ARGREQ, 0, 'd' },
285 { "admin-socket", OPTF_ARGREQ, 0, 'a' },
286 { "spawn", 0, 0, 's' },
287 { "spawn-path", OPTF_ARGREQ, 0, 'p' },
288 { "spawn-args", OPTF_ARGREQ, 0, 'S' },
289 { "syslog", 0, 0, 'l' },
290 { "logfile", OPTF_ARGREQ, 0, 'f' },
291 { "warnings", 0, 0, 'w' },
292 { "pidfile", OPTF_ARGREQ, 0, 'P' },
296 int i = mdwopt(argc, argv, "+hvuDd:a:sp:S:lwf:nP:", opts, 0, 0, 0);
310 f |= f_daemon | f_noinput;
326 f |= f_spawn | f_spawnopts;
327 for (p = strtok(optarg, ","); p; p = strtok(0, ","))
328 DA_PUSH(&spawnopts, p);
331 f |= f_syslog | f_noinput;
348 if ((f & f_bogus) || ((f & f_noinput) && optind < argc)) {
353 /* --- Set various things up --- */
356 die(EXIT_FAILURE, "couldn't set `%s' as current directory: %s",
357 dir, strerror(errno));
361 if (!pidfile && (f & f_daemon) && ((f & f_syslog) || logname))
362 pidfile = "tripectl.pid";
363 if (pidfile && (pidfp = fopen(pidfile, "w")) == 0) {
364 die(EXIT_FAILURE, "couldn't open `%s' for writing: %s",
365 pidfile, strerror(errno));
367 signal(SIGINT, sigdie);
368 signal(SIGQUIT, sigdie);
369 signal(SIGTERM, sigdie);
372 /* --- Connect to the server --- */
378 sigset_t newmask, oldmask;
380 sa.sa_handler = reap;
381 sigemptyset(&sa.sa_mask);
382 sa.sa_flags = SA_NOCLDSTOP;
384 sa.sa_flags |= SA_RESTART;
386 sigaction(SIGCHLD, &sa, 0);
388 DA_UNSHIFT(&spawnopts, (char *)sock);
389 DA_UNSHIFT(&spawnopts, "-a");
390 DA_UNSHIFT(&spawnopts, "-d.");
391 DA_UNSHIFT(&spawnopts, (char *)spawnpath);
392 DA_PUSH(&spawnopts, 0);
393 if (socketpair(PF_UNIX, SOCK_STREAM, 0, pfd))
394 die(EXIT_FAILURE, "error from socketpair: %s", strerror(errno));
395 sigemptyset(&newmask);
396 sigaddset(&newmask, SIGCHLD);
397 sigprocmask(SIG_BLOCK, &newmask, &oldmask);
398 if ((kid = fork()) < 0)
399 die(EXIT_FAILURE, "fork failed: %s", strerror(errno));
401 dup2(pfd[1], STDIN_FILENO);
402 dup2(pfd[1], STDOUT_FILENO);
412 execvp(DA(&spawnopts)[0], DA(&spawnopts));
413 die(127, "couldn't exec `%s': %s", spawnpath, strerror(errno));
415 sigprocmask(SIG_SETMASK, &oldmask, 0);
419 struct sockaddr_un sun;
420 size_t sz = strlen(sock) + 1;
421 if (sz > sizeof(sun.sun_path))
422 die(EXIT_FAILURE, "socket name `%s' too long", sock);
423 memset(&sun, 0, sizeof(sun));
424 sun.sun_family = AF_UNIX;
425 memcpy(sun.sun_path, sock, sz);
426 sz = sz + offsetof(struct sockaddr_un, sun_path);
427 if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
428 die(EXIT_FAILURE, "error making socket: %s", strerror(errno));
429 if (connect(fd, (struct sockaddr *)&sun, sz)) {
430 die(EXIT_FAILURE, "error connecting to `%s': %s",
431 sun.sun_path, strerror(errno));
437 die(EXIT_FAILURE, "error becoming daemon: %s", strerror(errno));
440 fprintf(pidfp, "%li\n", (long)getpid());
444 /* --- If we're meant to be interactive, do that --- */
446 if (!(f & f_noinput) && optind == argc) {
451 selbuf_init(&bu, &sel, STDIN_FILENO, uline, &bu);
452 selbuf_init(&bs, &sel, fd, sline, &bs);
454 if (sel_select(&sel) && errno != EINTR && errno != EAGAIN)
455 die(EXIT_FAILURE, "select failed: %s", strerror(errno));
459 /* --- If there's a command, submit it --- */
463 dstr_puts(&d, argv[optind++]);
464 while (optind < argc) {
466 dstr_puts(&d, argv[optind++]);
469 write(fd, d.buf, d.len);
475 /* --- Pull everything else out of the box --- */
483 selbuf_init(&b, &sel, fd, cline, 0);
486 openlog(QUIS, 0, LOG_DAEMON);
489 sig_add(&hup, SIGHUP, sighup, 0);
492 if (sel_select(&sel) && errno != EINTR && errno != EAGAIN)
493 die(EXIT_FAILURE, "select failed: %s", strerror(errno));
500 /*----- That's all, folks -------------------------------------------------*/