… | |
… | |
5 | * All portions of code are copyright by their respective author/s. |
5 | * All portions of code are copyright by their respective author/s. |
6 | * Copyright (c) 2003-2007 Marc Lehmann <schmorp@schmorp.de> |
6 | * Copyright (c) 2003-2007 Marc Lehmann <schmorp@schmorp.de> |
7 | * |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify |
8 | * This program is free software; you can redistribute it and/or modify |
9 | * it under the terms of the GNU General Public License as published by |
9 | * it under the terms of the GNU General Public License as published by |
10 | * the Free Software Foundation; either version 2 of the License, or |
10 | * the Free Software Foundation; either version 3 of the License, or |
11 | * (at your option) any later version. |
11 | * (at your option) any later version. |
12 | * |
12 | * |
13 | * This program is distributed in the hope that it will be useful, |
13 | * This program is distributed in the hope that it will be useful, |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
… | |
… | |
19 | * along with this program; if not, write to the Free Software |
19 | * along with this program; if not, write to the Free Software |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
21 | *----------------------------------------------------------------------*/ |
21 | *----------------------------------------------------------------------*/ |
22 | |
22 | |
23 | #include "../config.h" |
23 | #include "../config.h" |
24 | #include <cstdio> |
24 | #include <stdio.h> |
25 | #include <cstdlib> |
25 | #include <stdlib.h> |
26 | #include <cstdarg> |
26 | #include <stdarg.h> |
27 | #include <cstring> |
27 | #include <string.h> |
28 | |
28 | |
29 | #include <unistd.h> |
29 | #include <unistd.h> |
30 | #include <fcntl.h> |
30 | #include <fcntl.h> |
31 | #include <sys/types.h> |
31 | #include <sys/types.h> |
32 | #include <sys/stat.h> |
32 | #include <sys/stat.h> |
… | |
… | |
39 | |
39 | |
40 | #if ENABLE_MLOCK |
40 | #if ENABLE_MLOCK |
41 | # include <sys/mman.h> |
41 | # include <sys/mman.h> |
42 | #endif |
42 | #endif |
43 | |
43 | |
44 | #include <cerrno> |
44 | #include <errno.h> |
45 | |
45 | |
46 | #include "rxvt.h" |
46 | #include "rxvt.h" |
47 | #include "rxvtdaemon.h" |
47 | #include "rxvtdaemon.h" |
48 | #include "libptytty.h" |
48 | #include "libptytty.h" |
49 | |
49 | |
50 | struct server : rxvt_connection { |
50 | struct server : rxvt_connection |
|
|
51 | { |
51 | log_callback log_cb; |
52 | log_callback log_cb; |
52 | getfd_callback getfd_cb; |
53 | getfd_callback getfd_cb; |
53 | |
54 | |
54 | void read_cb (ev::io &w, int revents); ev::io read_ev; |
55 | void read_cb (ev::io &w, int revents); ev::io read_ev; |
55 | void log_msg (const char *msg); |
56 | void log_msg (const char *msg); |
… | |
… | |
68 | } |
69 | } |
69 | |
70 | |
70 | void err (const char *format = 0, ...); |
71 | void err (const char *format = 0, ...); |
71 | }; |
72 | }; |
72 | |
73 | |
73 | struct unix_listener { |
74 | struct unix_listener |
|
|
75 | { |
74 | int fd; |
76 | int fd; |
75 | |
77 | |
76 | void accept_cb (ev::io &w, int revents); ev::io accept_ev; |
78 | void accept_cb (ev::io &w, int revents); ev::io accept_ev; |
77 | |
79 | |
|
|
80 | unix_listener (int fd); |
78 | unix_listener (const char *sockname); |
81 | static int open (const char *sockname); |
79 | }; |
82 | }; |
80 | |
83 | |
81 | unix_listener::unix_listener (const char *sockname) |
84 | unix_listener::unix_listener (int fd) : fd (fd) |
82 | { |
85 | { |
83 | accept_ev.set<unix_listener, &unix_listener::accept_cb> (this); |
86 | accept_ev.set<unix_listener, &unix_listener::accept_cb> (this); |
|
|
87 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
88 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
89 | accept_ev.start (fd, ev::READ); |
|
|
90 | } |
84 | |
91 | |
|
|
92 | int unix_listener::open (const char *sockname) |
|
|
93 | { |
85 | sockaddr_un sa; |
94 | sockaddr_un sa; |
86 | |
95 | |
87 | if (strlen (sockname) >= sizeof(sa.sun_path)) |
96 | if (strlen (sockname) >= sizeof(sa.sun_path)) |
88 | { |
97 | { |
89 | fputs ("socket name too long, aborting.\n", stderr); |
98 | fputs ("socket name too long, aborting.\n", stderr); |
90 | exit (EXIT_FAILURE); |
99 | exit (EXIT_FAILURE); |
91 | } |
100 | } |
92 | |
101 | |
|
|
102 | int fd; |
93 | if ((fd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) |
103 | if ((fd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) |
94 | { |
104 | { |
95 | perror ("unable to create listening socket"); |
105 | perror ("unable to create listening socket"); |
96 | exit (EXIT_FAILURE); |
106 | exit (EXIT_FAILURE); |
97 | } |
107 | } |
98 | |
108 | |
99 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
100 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
101 | |
|
|
102 | sa.sun_family = AF_UNIX; |
109 | sa.sun_family = AF_UNIX; |
103 | strcpy (sa.sun_path, sockname); |
110 | strcpy (sa.sun_path, sockname); |
104 | |
111 | |
105 | unlink (sockname); |
112 | unlink (sockname); |
106 | |
113 | |
… | |
… | |
118 | { |
125 | { |
119 | perror ("unable to listen on socket"); |
126 | perror ("unable to listen on socket"); |
120 | exit (EXIT_FAILURE); |
127 | exit (EXIT_FAILURE); |
121 | } |
128 | } |
122 | |
129 | |
123 | accept_ev.start (fd, ev::READ); |
130 | return fd; |
124 | } |
131 | } |
125 | |
132 | |
126 | void unix_listener::accept_cb (ev::io &w, int revents) |
133 | void unix_listener::accept_cb (ev::io &w, int revents) |
127 | { |
134 | { |
128 | int fd2 = accept (fd, 0, 0); |
135 | int fd2 = accept (fd, 0, 0); |
… | |
… | |
186 | argv->push_back (strdup (tok)); |
193 | argv->push_back (strdup (tok)); |
187 | else |
194 | else |
188 | return err ("protocol error: unexpected NEW token.\n"); |
195 | return err ("protocol error: unexpected NEW token.\n"); |
189 | } |
196 | } |
190 | |
197 | |
191 | envv->push_back (0); |
|
|
192 | |
|
|
193 | { |
198 | { |
194 | rxvt_term *term = new rxvt_term; |
199 | rxvt_term *term = new rxvt_term; |
195 | |
200 | |
196 | term->log_hook = &log_cb; |
201 | term->log_hook = &log_cb; |
197 | term->getfd_hook = &getfd_cb; |
202 | term->getfd_hook = &getfd_cb; |
… | |
… | |
204 | } |
209 | } |
205 | catch (const class rxvt_failure_exception &e) |
210 | catch (const class rxvt_failure_exception &e) |
206 | { |
211 | { |
207 | success = false; |
212 | success = false; |
208 | } |
213 | } |
|
|
214 | catch (const std::exception &e) |
|
|
215 | { |
|
|
216 | log_msg (e.what()); |
|
|
217 | success = false; |
|
|
218 | } |
209 | |
219 | |
210 | term->log_hook = 0; |
220 | term->log_hook = 0; |
211 | |
221 | |
212 | chdir ("/"); // init might change to different working directory |
222 | chdir ("/"); // init might change to different working directory |
213 | |
223 | |
… | |
… | |
215 | term->destroy (); |
225 | term->destroy (); |
216 | |
226 | |
217 | send ("END"); send (success ? 1 : 0); |
227 | send ("END"); send (success ? 1 : 0); |
218 | } |
228 | } |
219 | } |
229 | } |
|
|
230 | else if (!strcmp (tok, "QUIT")) |
|
|
231 | _exit (0); |
220 | else |
232 | else |
221 | return err ("protocol error: request '%s' unsupported.\n", (char *)tok); |
233 | return err ("protocol error: request '%s' unsupported.\n", (char *)tok); |
222 | } |
234 | } |
223 | else |
235 | else |
224 | return err (); |
236 | return err (); |
225 | } |
237 | } |
226 | |
238 | |
|
|
239 | #ifdef ENABLE_FRILLS |
|
|
240 | enum { |
|
|
241 | SD_LISTEN_FDS_START = 3, |
|
|
242 | }; |
|
|
243 | |
|
|
244 | // https://www.freedesktop.org/software/systemd/man/sd_listen_fds.html |
|
|
245 | // https://github.com/systemd/systemd/blob/main/src/libsystemd/sd-daemon/sd-daemon.c |
|
|
246 | static int get_listen_fds () |
|
|
247 | { |
|
|
248 | const char *listen_pid = getenv ("LISTEN_PID"); |
|
|
249 | if (!listen_pid) |
|
|
250 | return 0; |
|
|
251 | |
|
|
252 | char *end; |
|
|
253 | errno = 0; |
|
|
254 | long pid = strtol (listen_pid, &end, 10); |
|
|
255 | if (errno || end == listen_pid || *end) |
|
|
256 | return -1; |
|
|
257 | |
|
|
258 | if (getpid () != pid) |
|
|
259 | return 0; |
|
|
260 | |
|
|
261 | const char *listen_fds = getenv ("LISTEN_FDS"); |
|
|
262 | if (!listen_fds) |
|
|
263 | return 0; |
|
|
264 | |
|
|
265 | errno = 0; |
|
|
266 | long n = strtol (listen_fds, &end, 10); |
|
|
267 | if (errno || end == listen_fds || *end) |
|
|
268 | return -1; |
|
|
269 | |
|
|
270 | if (n <= 0 || n > INT_MAX - SD_LISTEN_FDS_START) |
|
|
271 | return -1; |
|
|
272 | |
|
|
273 | unsetenv ("LISTEN_PID"); |
|
|
274 | unsetenv ("LISTEN_FDS"); |
|
|
275 | unsetenv ("LISTEN_FDNAMES"); |
|
|
276 | |
|
|
277 | return n; |
|
|
278 | } |
|
|
279 | #endif |
|
|
280 | |
227 | int |
281 | int |
228 | main (int argc, const char *const *argv) |
282 | main (int argc, char *argv[]) |
229 | { |
283 | { |
|
|
284 | try |
|
|
285 | { |
230 | ptytty::init (); |
286 | ptytty::init (); |
|
|
287 | } |
|
|
288 | catch (const std::exception &e) |
|
|
289 | { |
|
|
290 | fputs (e.what (), stderr); |
|
|
291 | return EXIT_FAILURE; |
|
|
292 | } |
231 | |
293 | |
232 | static char opt_fork, opt_opendisplay, opt_quiet; |
294 | static char opt_fork, opt_opendisplay, opt_quiet; |
|
|
295 | #if ENABLE_PERL |
|
|
296 | static char *opt_eval; |
|
|
297 | #endif |
233 | #if ENABLE_MLOCK |
298 | #if ENABLE_MLOCK |
234 | static char opt_lock; |
299 | static char opt_lock; |
235 | #endif |
300 | #endif |
236 | |
301 | |
237 | for (int i = 1; i < argc; i++) |
302 | for (int i = 1; i < argc; i++) |
… | |
… | |
244 | opt_quiet = 1; |
309 | opt_quiet = 1; |
245 | #if ENABLE_MLOCK |
310 | #if ENABLE_MLOCK |
246 | else if (!strcmp (argv [i], "-m") || !strcmp (argv [i], "--mlock")) |
311 | else if (!strcmp (argv [i], "-m") || !strcmp (argv [i], "--mlock")) |
247 | opt_lock = 1; |
312 | opt_lock = 1; |
248 | #endif |
313 | #endif |
|
|
314 | #if ENABLE_PERL |
|
|
315 | else if (!strcmp (argv [i], "-e") || !strcmp (argv [i], "--eval")) |
|
|
316 | opt_eval = argv [++i]; |
|
|
317 | #endif |
249 | else |
318 | else |
250 | { |
319 | { |
251 | rxvt_log ("%s: unknown option '%s', aborting.\n", argv [0], argv [i]); |
320 | rxvt_log ("%s: unknown option '%s', aborting.\n", argv [0], argv [i]); |
252 | return EXIT_FAILURE; |
321 | return EXIT_FAILURE; |
253 | } |
322 | } |
254 | } |
323 | } |
255 | |
324 | |
256 | rxvt_init (); |
325 | rxvt_init (); |
257 | |
326 | |
|
|
327 | #if ENABLE_PERL |
|
|
328 | if (opt_eval) |
|
|
329 | { |
|
|
330 | rxvt_perl.init (); |
|
|
331 | rxvt_perl.eval (opt_eval); |
|
|
332 | } |
|
|
333 | #endif |
|
|
334 | |
258 | // optionally open display and never release it. |
335 | // optionally open display and never release it. |
259 | if (opt_opendisplay) |
336 | if (opt_opendisplay) |
260 | if (const char *dpy = getenv ("DISPLAY")) |
337 | if (const char *dpy = getenv ("DISPLAY")) |
261 | displays.get (dpy ? dpy : ":0"); // move string logic into rxvt_display maybe? |
338 | displays.get (dpy ? dpy : ":0"); // move string logic into rxvt_display maybe? |
262 | |
339 | |
|
|
340 | int fd; |
|
|
341 | #ifdef ENABLE_FRILLS |
|
|
342 | int n = get_listen_fds (); |
|
|
343 | if (n > 1) |
|
|
344 | { |
|
|
345 | fputs ("received multiple file descriptors, aborting.\n", stderr); |
|
|
346 | exit (EXIT_FAILURE); |
|
|
347 | } |
|
|
348 | else if (n == 1) |
|
|
349 | { |
|
|
350 | fd = SD_LISTEN_FDS_START; |
|
|
351 | if (!opt_quiet) |
|
|
352 | { |
|
|
353 | printf ("rxvt-unicode daemon listening on fd.\n"); |
|
|
354 | fflush (stdout); |
|
|
355 | } |
|
|
356 | } |
|
|
357 | else |
|
|
358 | #endif |
|
|
359 | { |
263 | char *sockname = rxvt_connection::unix_sockname (); |
360 | char *sockname = rxvt_connection::unix_sockname (); |
|
|
361 | fd = unix_listener::open (sockname); |
|
|
362 | if (!opt_quiet) |
|
|
363 | { |
|
|
364 | printf ("rxvt-unicode daemon listening on %s.\n", sockname); |
|
|
365 | fflush (stdout); |
|
|
366 | } |
|
|
367 | free (sockname); |
|
|
368 | } |
|
|
369 | |
264 | unix_listener l (sockname); |
370 | unix_listener l (fd); |
265 | |
371 | |
266 | chdir ("/"); |
372 | chdir ("/"); |
267 | |
|
|
268 | if (!opt_quiet) |
|
|
269 | { |
|
|
270 | printf ("rxvt-unicode daemon listening on %s.\n", sockname); |
|
|
271 | fflush (stdout); |
|
|
272 | } |
|
|
273 | |
|
|
274 | free (sockname); |
|
|
275 | |
373 | |
276 | pid_t pid = 0; |
374 | pid_t pid = 0; |
277 | if (opt_fork) |
375 | if (opt_fork) |
278 | { |
376 | { |
279 | pid = fork (); |
377 | pid = fork (); |