1 | /*----------------------------------------------------------------------* |
1 | /*----------------------------------------------------------------------* |
2 | * File: rxvtd.C |
2 | * File: rxvtd.C |
3 | *----------------------------------------------------------------------* |
3 | *----------------------------------------------------------------------* |
4 | * |
4 | * |
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 <pcg@goof.com> |
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 | |
… | |
… | |
73 | struct unix_listener { |
73 | struct unix_listener { |
74 | int fd; |
74 | int fd; |
75 | |
75 | |
76 | void accept_cb (ev::io &w, int revents); ev::io accept_ev; |
76 | void accept_cb (ev::io &w, int revents); ev::io accept_ev; |
77 | |
77 | |
|
|
78 | unix_listener (int fd); |
78 | unix_listener (const char *sockname); |
79 | static int open (const char *sockname); |
79 | }; |
80 | }; |
80 | |
81 | |
81 | unix_listener::unix_listener (const char *sockname) |
82 | unix_listener::unix_listener (int fd) : fd (fd) |
82 | { |
83 | { |
83 | accept_ev.set<unix_listener, &unix_listener::accept_cb> (this); |
84 | accept_ev.set<unix_listener, &unix_listener::accept_cb> (this); |
84 | |
|
|
85 | sockaddr_un sa; |
|
|
86 | |
|
|
87 | if (strlen (sockname) >= sizeof(sa.sun_path)) |
|
|
88 | { |
|
|
89 | fputs ("socket name too long, aborting.\n", stderr); |
|
|
90 | exit (EXIT_FAILURE); |
|
|
91 | } |
|
|
92 | |
|
|
93 | if ((fd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) |
|
|
94 | { |
|
|
95 | perror ("unable to create listening socket"); |
|
|
96 | exit (EXIT_FAILURE); |
|
|
97 | } |
|
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98 | |
|
|
99 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
85 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
100 | fcntl (fd, F_SETFL, O_NONBLOCK); |
86 | fcntl (fd, F_SETFL, O_NONBLOCK); |
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87 | accept_ev.start (fd, ev::READ); |
|
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88 | } |
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89 | |
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90 | int unix_listener::open (const char *sockname) |
|
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91 | { |
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92 | sockaddr_un sa; |
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93 | |
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94 | if (strlen (sockname) >= sizeof(sa.sun_path)) |
|
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95 | { |
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96 | fputs ("socket name too long, aborting.\n", stderr); |
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97 | exit (EXIT_FAILURE); |
|
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98 | } |
|
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99 | |
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100 | int fd; |
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101 | if ((fd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) |
|
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102 | { |
|
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103 | perror ("unable to create listening socket"); |
|
|
104 | exit (EXIT_FAILURE); |
|
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105 | } |
101 | |
106 | |
102 | sa.sun_family = AF_UNIX; |
107 | sa.sun_family = AF_UNIX; |
103 | strcpy (sa.sun_path, sockname); |
108 | strcpy (sa.sun_path, sockname); |
104 | |
109 | |
105 | unlink (rxvt_connection::unix_sockname ()); |
110 | unlink (sockname); |
106 | |
111 | |
107 | mode_t omask = umask (0077); |
112 | mode_t omask = umask (0077); |
108 | |
113 | |
109 | if (bind (fd, (sockaddr *)&sa, sizeof (sa))) |
114 | if (bind (fd, (sockaddr *)&sa, sizeof (sa))) |
110 | { |
115 | { |
… | |
… | |
118 | { |
123 | { |
119 | perror ("unable to listen on socket"); |
124 | perror ("unable to listen on socket"); |
120 | exit (EXIT_FAILURE); |
125 | exit (EXIT_FAILURE); |
121 | } |
126 | } |
122 | |
127 | |
123 | accept_ev.start (fd, ev::READ); |
128 | return fd; |
124 | } |
129 | } |
125 | |
130 | |
126 | void unix_listener::accept_cb (ev::io &w, int revents) |
131 | void unix_listener::accept_cb (ev::io &w, int revents) |
127 | { |
132 | { |
128 | int fd2 = accept (fd, 0, 0); |
133 | int fd2 = accept (fd, 0, 0); |
… | |
… | |
186 | argv->push_back (strdup (tok)); |
191 | argv->push_back (strdup (tok)); |
187 | else |
192 | else |
188 | return err ("protocol error: unexpected NEW token.\n"); |
193 | return err ("protocol error: unexpected NEW token.\n"); |
189 | } |
194 | } |
190 | |
195 | |
191 | envv->push_back (0); |
|
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192 | |
|
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193 | { |
196 | { |
194 | rxvt_term *term = new rxvt_term; |
197 | rxvt_term *term = new rxvt_term; |
195 | |
198 | |
196 | term->log_hook = &log_cb; |
199 | term->log_hook = &log_cb; |
197 | term->getfd_hook = &getfd_cb; |
200 | term->getfd_hook = &getfd_cb; |
… | |
… | |
215 | term->destroy (); |
218 | term->destroy (); |
216 | |
219 | |
217 | send ("END"); send (success ? 1 : 0); |
220 | send ("END"); send (success ? 1 : 0); |
218 | } |
221 | } |
219 | } |
222 | } |
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223 | else if (!strcmp (tok, "QUIT")) |
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224 | _exit (0); |
220 | else |
225 | else |
221 | return err ("protocol error: request '%s' unsupported.\n", (char *)tok); |
226 | return err ("protocol error: request '%s' unsupported.\n", (char *)tok); |
222 | } |
227 | } |
223 | else |
228 | else |
224 | return err (); |
229 | return err (); |
225 | } |
230 | } |
226 | |
231 | |
|
|
232 | #ifdef ENABLE_FRILLS |
|
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233 | enum { |
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234 | SD_LISTEN_FDS_START = 3, |
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235 | }; |
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236 | |
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237 | // https://www.freedesktop.org/software/systemd/man/sd_listen_fds.html |
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238 | // https://github.com/systemd/systemd/blob/main/src/libsystemd/sd-daemon/sd-daemon.c |
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239 | static int get_listen_fds () |
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240 | { |
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241 | const char *listen_pid = getenv ("LISTEN_PID"); |
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242 | if (!listen_pid) |
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243 | return 0; |
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244 | |
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245 | char *end; |
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246 | errno = 0; |
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247 | long pid = strtol (listen_pid, &end, 10); |
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248 | if (errno || end == listen_pid || *end) |
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249 | return -1; |
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250 | |
|
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251 | if (getpid () != pid) |
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252 | return 0; |
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253 | |
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254 | const char *listen_fds = getenv ("LISTEN_FDS"); |
|
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255 | if (!listen_fds) |
|
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256 | return 0; |
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257 | |
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258 | errno = 0; |
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259 | long n = strtol (listen_fds, &end, 10); |
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260 | if (errno || end == listen_fds || *end) |
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261 | return -1; |
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262 | |
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263 | if (n <= 0 || n > INT_MAX - SD_LISTEN_FDS_START) |
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264 | return -1; |
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265 | |
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266 | unsetenv ("LISTEN_PID"); |
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267 | unsetenv ("LISTEN_FDS"); |
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268 | unsetenv ("LISTEN_FDNAMES"); |
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269 | |
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270 | return n; |
|
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271 | } |
|
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272 | #endif |
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273 | |
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274 | int |
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275 | main (int argc, char *argv[]) |
|
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276 | { |
|
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277 | ptytty::init (); |
|
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278 | |
227 | int opt_fork, opt_opendisplay, opt_quiet; |
279 | static char opt_fork, opt_opendisplay, opt_quiet; |
|
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280 | #if ENABLE_PERL |
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281 | static char *opt_eval; |
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282 | #endif |
228 | #if ENABLE_MLOCK |
283 | #if ENABLE_MLOCK |
229 | int opt_lock; |
284 | static char opt_lock; |
230 | #endif |
285 | #endif |
231 | |
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232 | int |
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233 | main (int argc, const char *const *argv) |
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234 | { |
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235 | rxvt_init (); |
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236 | |
286 | |
237 | for (int i = 1; i < argc; i++) |
287 | for (int i = 1; i < argc; i++) |
238 | { |
288 | { |
239 | if (!strcmp (argv [i], "-f") || !strcmp (argv [i], "--fork")) |
289 | if (!strcmp (argv [i], "-f") || !strcmp (argv [i], "--fork")) |
240 | opt_fork = 1; |
290 | opt_fork = 1; |
… | |
… | |
244 | opt_quiet = 1; |
294 | opt_quiet = 1; |
245 | #if ENABLE_MLOCK |
295 | #if ENABLE_MLOCK |
246 | else if (!strcmp (argv [i], "-m") || !strcmp (argv [i], "--mlock")) |
296 | else if (!strcmp (argv [i], "-m") || !strcmp (argv [i], "--mlock")) |
247 | opt_lock = 1; |
297 | opt_lock = 1; |
248 | #endif |
298 | #endif |
|
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299 | #if ENABLE_PERL |
|
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300 | else if (!strcmp (argv [i], "-e") || !strcmp (argv [i], "--eval")) |
|
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301 | opt_eval = argv [++i]; |
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302 | #endif |
249 | else |
303 | else |
250 | { |
304 | { |
251 | rxvt_log ("%s: unknown option '%s', aborting.\n", argv [0], argv [i]); |
305 | rxvt_log ("%s: unknown option '%s', aborting.\n", argv [0], argv [i]); |
252 | return EXIT_FAILURE; |
306 | return EXIT_FAILURE; |
253 | } |
307 | } |
254 | } |
308 | } |
|
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309 | |
|
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310 | rxvt_init (); |
|
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311 | |
|
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312 | #if ENABLE_PERL |
|
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313 | if (opt_eval) |
|
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314 | { |
|
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315 | rxvt_perl.init (); |
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316 | rxvt_perl.eval (opt_eval); |
|
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317 | } |
|
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318 | #endif |
255 | |
319 | |
256 | // optionally open display and never release it. |
320 | // optionally open display and never release it. |
257 | if (opt_opendisplay) |
321 | if (opt_opendisplay) |
258 | if (const char *dpy = getenv ("DISPLAY")) |
322 | if (const char *dpy = getenv ("DISPLAY")) |
259 | displays.get (dpy ? dpy : ":0"); // move string logic into rxvt_display maybe? |
323 | displays.get (dpy ? dpy : ":0"); // move string logic into rxvt_display maybe? |
260 | |
324 | |
|
|
325 | int fd; |
|
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326 | #ifdef ENABLE_FRILLS |
|
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327 | int n = get_listen_fds (); |
|
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328 | if (n > 1) |
|
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329 | { |
|
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330 | fputs ("received multiple file descriptors, aborting.\n", stderr); |
|
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331 | exit (EXIT_FAILURE); |
|
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332 | } |
|
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333 | else if (n == 1) |
|
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334 | { |
|
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335 | fd = SD_LISTEN_FDS_START; |
|
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336 | if (!opt_quiet) |
|
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337 | { |
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338 | printf ("rxvt-unicode daemon listening on fd.\n"); |
|
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339 | fflush (stdout); |
|
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340 | } |
|
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341 | } |
|
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342 | else |
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343 | #endif |
|
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344 | { |
261 | char *sockname = rxvt_connection::unix_sockname (); |
345 | char *sockname = rxvt_connection::unix_sockname (); |
|
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346 | fd = unix_listener::open (sockname); |
|
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347 | if (!opt_quiet) |
|
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348 | { |
|
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349 | printf ("rxvt-unicode daemon listening on %s.\n", sockname); |
|
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350 | fflush (stdout); |
|
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351 | } |
|
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352 | free (sockname); |
|
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353 | } |
|
|
354 | |
262 | unix_listener l (sockname); |
355 | unix_listener l (fd); |
263 | |
356 | |
264 | chdir ("/"); |
357 | chdir ("/"); |
265 | |
|
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266 | if (!opt_quiet) |
|
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267 | { |
|
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268 | printf ("rxvt-unicode daemon listening on %s.\n", sockname); |
|
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269 | fflush (stdout); |
|
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270 | } |
|
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271 | |
|
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272 | free (sockname); |
|
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273 | |
358 | |
274 | pid_t pid = 0; |
359 | pid_t pid = 0; |
275 | if (opt_fork) |
360 | if (opt_fork) |
276 | { |
361 | { |
277 | pid = fork (); |
362 | pid = fork (); |
278 | } |
363 | } |
279 | |
364 | |
280 | #if ENABLE_MLOCK |
365 | #if ENABLE_MLOCK |
281 | // Optionally preform a mlockall so this process does not get swapped out. |
366 | // Optionally perform an mlockall so this process does not get swapped out. |
282 | if (opt_lock && pid == 0) |
367 | if (opt_lock && !pid) |
283 | if (mlockall(MCL_CURRENT | MCL_FUTURE) == -1) |
368 | if (mlockall (MCL_CURRENT | MCL_FUTURE) < 0) |
284 | perror("unable to lock into ram"); |
369 | perror ("unable to lock into ram"); |
285 | #endif |
370 | #endif |
286 | |
371 | |
287 | if (opt_fork) |
372 | if (opt_fork) |
288 | { |
373 | { |
289 | if (pid < 0) |
374 | if (pid < 0) |
… | |
… | |
292 | return EXIT_FAILURE; |
377 | return EXIT_FAILURE; |
293 | } |
378 | } |
294 | else if (pid > 0) |
379 | else if (pid > 0) |
295 | _exit (EXIT_SUCCESS); |
380 | _exit (EXIT_SUCCESS); |
296 | |
381 | |
297 | ev_default_fork (); |
382 | ev_loop_fork (EV_DEFAULT_UC); |
298 | } |
383 | } |
299 | |
384 | |
300 | ev_loop (0); |
385 | ev_run (); |
301 | |
386 | |
302 | return EXIT_SUCCESS; |
387 | return EXIT_SUCCESS; |
303 | } |
388 | } |
304 | |
389 | |