4 * Copyright (c) 2008 James McKenzie <james@fishsoup.dhs.org>,
14 * Revision 1.24 2008/02/28 22:00:42 james
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83 * Revision 1.1 2008/02/05 14:25:49 james
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88 #include <sys/types.h>
92 #include <sys/utsname.h>
100 #include "mainloop.h"
102 extern void usage (void);
104 static char hostname[1024];
115 ret = (int) strtol (a, &end, 0);
124 fatal_moan (char *fmt, ...)
130 vfprintf (stderr, fmt, ap);
139 /*make the path in fmt from home (hence the name) */
142 mome (char *fmt, ...)
152 home = getenv ("HOME");
156 homelen = strlen (home) + 1;
158 size = 1024 + homelen;
163 fatal_moan ("malloc failed");
173 n = vsnprintf (buf + homelen, size - homelen, fmt, ap);
176 if (n > -1 && n < (size - homelen))
179 if (n > -1) /* glibc 2.1 */
180 size = homelen + n + 1;
182 size *= 2; /* twice the old size */
184 buf = realloc (buf, size);
187 fatal_moan ("malloc failed");
199 char *sockdir = mome ("/.sympathy/");
200 DIR *dir = opendir (sockdir);
204 int hostname_len = strlen (hostname);
207 fatal_moan ("can't examine %s for sockets", sockdir);
212 while ((ent = readdir (dir)))
214 sn = mome (".sympathy/%s", ent->d_name);
215 if (stat (sn, &buf) || (!S_ISSOCK (buf.st_mode)))
221 s = socket_connect (sn);
225 printf ("\t%s (Active)\n", ent->d_name);
230 if (strncmp (ent->d_name, hostname, hostname_len))
232 printf ("\t%s (Unknown - not this host)\n", ent->d_name);
236 printf ("\t%s (Dead, wiped)\n", ent->d_name);
257 strcpy (hostname, "unknown.");
262 strcpy (hostname, name.nodename);
263 strcat (hostname, ".");
268 main (int argc, char *argv[])
272 extern int optind, opterr, optopt;
273 CRT_Pos size = { VT102_COLS_80, VT102_ROWS_24 };
275 int csnok_pipe[2] = { 0 };
281 Socket *server_socket = NULL, *client_socket = NULL;
291 memset (oflags, 0, sizeof (oflags));
292 memset (oargs, 0, sizeof (oargs));
293 while ((c = getopt (argc, argv, "vw:utscr:lKHd:pb:fL:Fk:n:")) != EOF)
302 if ((c > 64) && (c < 91))
307 else if ((c > 96) && (c < 123))
314 fprintf (stderr, "unknown option %c\n", c);
321 /*Compatability for screen's ls */
329 sum += (oflags['s'] || oflags['c']) ? 1 : 0;
336 /*If no mode is specified behave like screen */
344 ("specifiy exactly one of ( -c and or -s ), -t, -r, -l and -v");
349 fprintf (stderr, "Version: %s\n", libsympathy_version ());
350 fprintf (stderr, "Version: %s\n", rcsid);
355 return list_sockets ();
358 if (oflags['r'] && oflags['k'])
359 fatal_moan ("-k is incompatible with -r");
364 history = safe_atoi (oargs['n']);
366 fatal_moan ("cannot parse -n %s as an integer", oargs['n']);
369 fatal_moan ("agrument to -n must be greater than zero");
375 char *id = oargs['r'];
377 fatal_moan ("cannot parse -r %s as an integer", oargs['r']);
380 if (safe_atoi (id) > 0)
382 oargs['k'] = mome ("/.sympathy/%s%d", hostname, safe_atoi (id));
386 oargs['k'] = mome ("/.sympathy/%s", id);
392 if (oflags['p'] && oflags['d'])
393 fatal_moan ("-p incompatible with -d");
396 if (oflags['c'] && oflags['s'] && oflags['F'])
397 fatal_moan ("-F is incompatible with -c -s");
399 /*implement server and client: this process forks. The parent */
400 /*becomes the client and the child forks again to become the */
401 /*server. If there's no -k argument the client (parent) needs */
402 /*to find out the pid of the server, we use a pipe */
404 if (oflags['s'] && oflags['c'])
412 switch (pid = fork ())
414 case 0: /*child becomes the server */
419 close (csnok_pipe[0]);
422 fatal_moan ("fork failed");
423 default: /*parent becomes client*/
434 /*Collect the child*/
435 waitpid (pid, NULL, 0);
437 /*if there was no k argument we need to find the*/
438 /*pid of the server process so that we can work out*/
439 /*what the socket is called. The server tells us on*/
444 close (csnok_pipe[1]);
446 if (read (csnok_pipe[0], &pid, sizeof (pid)) != sizeof (pid))
447 fatal_moan ("Failed to receive pid of server process");
449 close (csnok_pipe[0]);
451 oargs['k'] = mome ("/.sympathy/%s%d", hostname, pid);
458 if (oflags['c'] && !oflags['k'])
459 fatal_moan ("-c requires a socket to be specified with -s or -k");
461 if ((oflags['p'] || oflags['d'] || oflags['K'] || oflags['b'] || oflags['f']
462 || oflags['L']) && oflags['c'])
463 fatal_moan ("-c or -r are incompatible with -p, -d, -K, -b, -f or -L");
465 if (oflags['t'] || oflags['s'])
467 if (!oflags['p'] && !oflags['d'])
474 strcpy (buf, oargs['w']);
475 ptr = index (buf, 'x');
480 size.y = safe_atoi (ptr);
482 size.x = safe_atoi (buf);
484 if ((size.x > VT102_MAX_COLS) || (size.x < 1))
485 fatal_moan ("-w requires a width between 1 and %d\n", VT102_MAX_COLS);
487 if ((size.y > VT102_MAX_ROWS) || (size.y < 1))
488 fatal_moan ("-w requires a height between 1 and %d\n",
493 if (oflags['s'] && !oflags['F'])
495 /*nochdir incase socket is relative path, unlink then will fail */
498 /*Tell our parent's parent what our pid is */
503 write (csnok_pipe[1], &pid, sizeof (pid));
504 close (csnok_pipe[1]);
512 path = mome ("/.sympathy");
520 oargs['k'] = mome ("/.sympathy/%s%d", hostname, pid);
524 server_socket = socket_listen (oargs['k']);
526 fatal_moan ("failed to create socket %s for listening", oargs['k']);
530 if (oflags['s'] || oflags['t'])
535 log = file_log_new (oargs['L']);
537 fatal_moan ("unable to access log file %s", oargs['L']);
542 tty = ptty_open (NULL, NULL, &size);
544 fatal_moan ("unable to open a ptty");
548 /*HACK-- check that console=device does not occur in */
551 fatal_moan ("no argument to -d");
554 char kernel_cmdline[4096] = { 0 };
555 char search_string[1024] = "console=";
556 char *ptr = oargs['d'];
559 if (!strncmp ("/dev/", ptr, 5))
562 strcat (search_string, ptr);
564 fd = open ("/proc/cmdline", O_RDONLY);
565 read (fd, kernel_cmdline, sizeof (kernel_cmdline));
568 kernel_cmdline[sizeof (kernel_cmdline) - 1] = 0;
570 if (strstr (kernel_cmdline, search_string))
571 fatal_moan ("/proc/cmdline contains %s", search_string);
575 serial_open (oargs['d'],
576 oflags['K'] ? SERIAL_LOCK_ACTIVE :
577 SERIAL_LOCK_PASSIVE);
579 fatal_moan ("unable to open serial port %s", oargs['d']);
584 int baud = safe_atoi (oargs['b']);
587 fatal_moan ("Unable to parse baudrate %s", oargs['b']);
589 tty_set_baud (tty, baud);
593 tty_set_flow (tty, oflags['f'] ? 1 : 0);
600 client_socket = socket_connect (oargs['k']);
602 fatal_moan ("failed to connect to socket %s", oargs['k']);
608 if (oflags['c'] || oflags['t'])
613 ansi = ansi_new_html (stdout);
617 terminal_register_handlers ();
619 ansi_new_from_terminal (terminal_open (0, 1),
620 oflags['u'] ? 0 : 1);
621 ansi->reset (ansi, NULL);
625 mainloop (tty, server_socket, client_socket, ansi, log, history, &size);
639 socket_free (server_socket);
641 socket_free (client_socket);
644 printf ("you have now exited sympathy\n");