1 | /*--------------------------------*-C-*---------------------------------* |
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) 2003-2006 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 2 of the License, or |
11 | * (at your option) any later version. |
11 | * (at your option) any later version. |
… | |
… | |
31 | #include <sys/types.h> |
31 | #include <sys/types.h> |
32 | #include <sys/stat.h> |
32 | #include <sys/stat.h> |
33 | #include <sys/socket.h> |
33 | #include <sys/socket.h> |
34 | #include <sys/un.h> |
34 | #include <sys/un.h> |
35 | |
35 | |
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36 | #if defined(ENABLE_FRILLS) && defined(_POSIX_MEMLOCK) && _POSIX_MEMLOCK > 0 |
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37 | # define ENABLE_MLOCK 1 |
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38 | #endif |
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39 | |
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40 | #if ENABLE_MLOCK |
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41 | # include <sys/mman.h> |
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42 | #endif |
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43 | |
36 | #include <cerrno> |
44 | #include <cerrno> |
37 | |
45 | |
38 | #include "rxvt.h" |
46 | #include "rxvt.h" |
39 | #include "rxvtdaemon.h" |
47 | #include "rxvtdaemon.h" |
40 | #include "libptytty.h" |
48 | #include "libptytty.h" |
41 | #include "iom.h" |
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42 | |
49 | |
43 | struct server : rxvt_connection { |
50 | struct server : rxvt_connection { |
44 | log_callback log_cb; |
51 | log_callback log_cb; |
45 | getfd_callback getfd_cb; |
52 | getfd_callback getfd_cb; |
46 | |
53 | |
47 | void read_cb (io_watcher &w, short revents); io_watcher read_ev; |
54 | void read_cb (ev::io &w, int revents); ev::io read_ev; |
48 | void log_msg (const char *msg); |
55 | void log_msg (const char *msg); |
49 | int getfd (int remote_fd); |
56 | int getfd (int remote_fd); |
50 | |
57 | |
51 | server (int fd) |
58 | server (int fd) |
52 | : read_ev (this, &server::read_cb), |
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53 | log_cb (this, &server::log_msg), |
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54 | getfd_cb (this, &server::getfd) |
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55 | { |
59 | { |
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60 | read_ev.set <server, &server::read_cb> (this); |
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61 | log_cb.set <server, &server::log_msg> (this); |
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62 | getfd_cb.set<server, &server::getfd> (this); |
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63 | |
56 | this->fd = fd; |
64 | this->fd = fd; |
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65 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
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66 | fcntl (fd, F_SETFL, 0); |
57 | read_ev.start (fd, EVENT_READ); |
67 | read_ev.start (fd, ev::READ); |
58 | } |
68 | } |
59 | |
69 | |
60 | void err (const char *format = 0, ...); |
70 | void err (const char *format = 0, ...); |
61 | }; |
71 | }; |
62 | |
72 | |
63 | struct unix_listener { |
73 | struct unix_listener { |
64 | int fd; |
74 | int fd; |
65 | |
75 | |
66 | void accept_cb (io_watcher &w, short revents); io_watcher accept_ev; |
76 | void accept_cb (ev::io &w, int revents); ev::io accept_ev; |
67 | |
77 | |
68 | unix_listener (const char *sockname); |
78 | unix_listener (const char *sockname); |
69 | }; |
79 | }; |
70 | |
80 | |
71 | unix_listener::unix_listener (const char *sockname) |
81 | unix_listener::unix_listener (const char *sockname) |
72 | : accept_ev (this, &unix_listener::accept_cb) |
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73 | { |
82 | { |
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83 | accept_ev.set<unix_listener, &unix_listener::accept_cb> (this); |
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84 | |
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85 | sockaddr_un sa; |
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86 | |
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87 | if (strlen (sockname) >= sizeof(sa.sun_path)) |
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88 | { |
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89 | fputs ("socket name too long, aborting.\n", stderr); |
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90 | exit (EXIT_FAILURE); |
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91 | } |
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92 | |
74 | if ((fd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) |
93 | if ((fd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) |
75 | { |
94 | { |
76 | perror ("unable to create listening socket"); |
95 | perror ("unable to create listening socket"); |
77 | exit (EXIT_FAILURE); |
96 | exit (EXIT_FAILURE); |
78 | } |
97 | } |
79 | |
98 | |
80 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
99 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
81 | |
100 | fcntl (fd, F_SETFL, O_NONBLOCK); |
82 | sockaddr_un sa; |
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83 | |
101 | |
84 | sa.sun_family = AF_UNIX; |
102 | sa.sun_family = AF_UNIX; |
85 | strcpy (sa.sun_path, sockname); |
103 | strcpy (sa.sun_path, sockname); |
86 | |
104 | |
87 | unlink (rxvt_connection::unix_sockname ()); |
105 | unlink (sockname); |
88 | |
106 | |
89 | mode_t omask = umask (0077); |
107 | mode_t omask = umask (0077); |
90 | |
108 | |
91 | if (bind (fd, (sockaddr *)&sa, sizeof (sa))) |
109 | if (bind (fd, (sockaddr *)&sa, sizeof (sa))) |
92 | { |
110 | { |
… | |
… | |
100 | { |
118 | { |
101 | perror ("unable to listen on socket"); |
119 | perror ("unable to listen on socket"); |
102 | exit (EXIT_FAILURE); |
120 | exit (EXIT_FAILURE); |
103 | } |
121 | } |
104 | |
122 | |
105 | accept_ev.start (fd, EVENT_READ); |
123 | accept_ev.start (fd, ev::READ); |
106 | } |
124 | } |
107 | |
125 | |
108 | void unix_listener::accept_cb (io_watcher &w, short revents) |
126 | void unix_listener::accept_cb (ev::io &w, int revents) |
109 | { |
127 | { |
110 | int fd2 = accept (fd, 0, 0); |
128 | int fd2 = accept (fd, 0, 0); |
111 | |
129 | |
112 | if (fd2 >= 0) |
130 | if (fd2 >= 0) |
113 | { |
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114 | fcntl (fd2, F_SETFD, FD_CLOEXEC); |
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115 | new server (fd2); |
131 | new server (fd2); |
116 | } |
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117 | } |
132 | } |
118 | |
133 | |
119 | int server::getfd (int remote_fd) |
134 | int server::getfd (int remote_fd) |
120 | { |
135 | { |
121 | send ("GETFD"); |
136 | send ("GETFD"); |
… | |
… | |
137 | va_list ap; |
152 | va_list ap; |
138 | va_start (ap, format); |
153 | va_start (ap, format); |
139 | vsnprintf (err, 1024, format, ap); |
154 | vsnprintf (err, 1024, format, ap); |
140 | va_end (ap); |
155 | va_end (ap); |
141 | |
156 | |
142 | send ("MSG"), send (err); |
157 | log_msg (err); |
143 | } |
158 | } |
144 | |
159 | |
145 | send ("END", 0); |
160 | send ("END"), send (0); |
146 | close (fd); |
161 | close (fd); |
147 | delete this; |
162 | delete this; |
148 | } |
163 | } |
149 | |
164 | |
150 | void server::read_cb (io_watcher &w, short revents) |
165 | void server::read_cb (ev::io &w, int revents) |
151 | { |
166 | { |
152 | auto_str tok; |
167 | auto_str tok; |
153 | |
168 | |
154 | if (recv (tok)) |
169 | if (recv (tok)) |
155 | { |
170 | { |
156 | if (!strcmp (tok, "NEW")) |
171 | if (!strcmp (tok, "NEW")) |
157 | { |
172 | { |
158 | stringvec *argv = new stringvec; |
173 | stringvec *argv = new stringvec; |
159 | stringvec *envv = new stringvec; |
174 | stringvec *envv = new stringvec; |
160 | |
175 | |
161 | for (;;) |
176 | for (;;) |
162 | { |
177 | { |
163 | if (!recv (tok)) |
178 | if (!recv (tok)) |
164 | return err (); |
179 | return err (); |
165 | |
180 | |
166 | if (!strcmp (tok, "END")) |
181 | if (!strcmp (tok, "END")) |
167 | break; |
182 | break; |
168 | else if (!strcmp (tok, "ENV") && recv (tok)) |
183 | else if (!strcmp (tok, "ENV") && recv (tok)) |
169 | envv->push_back (strdup (tok)); |
184 | envv->push_back (strdup (tok)); |
170 | else if (!strcmp (tok, "CWD") && recv (tok)) |
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171 | { |
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172 | if (chdir (tok)) |
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173 | err ("unable to change to working directory to '%s': %s", |
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174 | (char *)tok, strerror (errno)); |
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175 | } |
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176 | else if (!strcmp (tok, "ARG") && recv (tok)) |
185 | else if (!strcmp (tok, "ARG") && recv (tok)) |
177 | argv->push_back (strdup (tok)); |
186 | argv->push_back (strdup (tok)); |
178 | else |
187 | else |
179 | return err ("protocol error: unexpected NEW token"); |
188 | return err ("protocol error: unexpected NEW token.\n"); |
180 | } |
189 | } |
181 | |
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182 | envv->push_back (0); |
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183 | |
190 | |
184 | { |
191 | { |
185 | rxvt_term *term = new rxvt_term; |
192 | rxvt_term *term = new rxvt_term; |
186 | |
193 | |
187 | term->log_hook = &log_cb; |
194 | term->log_hook = &log_cb; |
188 | term->getfd_hook = &getfd_cb; |
195 | term->getfd_hook = &getfd_cb; |
189 | |
196 | |
190 | bool success; |
197 | bool success = true; |
191 | |
198 | |
192 | try |
199 | try |
193 | { |
200 | { |
194 | success = term->init (argv, envv); |
201 | term->init (argv, envv); |
195 | } |
202 | } |
196 | catch (const class rxvt_failure_exception &e) |
203 | catch (const class rxvt_failure_exception &e) |
197 | { |
204 | { |
198 | success = false; |
205 | success = false; |
199 | } |
206 | } |
200 | |
207 | |
201 | term->log_hook = 0; |
208 | term->log_hook = 0; |
202 | |
209 | |
203 | chdir ("/"); |
210 | chdir ("/"); // init might change to different working directory |
204 | |
211 | |
205 | if (!success) |
212 | if (!success) |
206 | term->destroy (); |
213 | term->destroy (); |
207 | |
214 | |
208 | send ("END"); send (success ? 1 : 0); |
215 | send ("END"); send (success ? 1 : 0); |
209 | } |
216 | } |
210 | } |
217 | } |
211 | else |
218 | else |
212 | return err ("protocol error: request '%s' unsupported.", (char *)tok); |
219 | return err ("protocol error: request '%s' unsupported.\n", (char *)tok); |
213 | } |
220 | } |
214 | else |
221 | else |
215 | return err (); |
222 | return err (); |
216 | } |
223 | } |
217 | |
224 | |
218 | int opt_fork, opt_opendisplay, opt_quiet; |
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219 | |
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220 | int |
225 | int |
221 | main (int argc, const char *const *argv) |
226 | main (int argc, char *argv[]) |
222 | { |
227 | { |
223 | rxvt_init (); |
228 | ptytty::init (); |
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229 | |
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230 | static char opt_fork, opt_opendisplay, opt_quiet; |
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231 | #if ENABLE_MLOCK |
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232 | static char opt_lock; |
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233 | #endif |
224 | |
234 | |
225 | for (int i = 1; i < argc; i++) |
235 | for (int i = 1; i < argc; i++) |
226 | { |
236 | { |
227 | if (!strcmp (argv [i], "-f") || !strcmp (argv [i], "--fork")) |
237 | if (!strcmp (argv [i], "-f") || !strcmp (argv [i], "--fork")) |
228 | opt_fork = 1; |
238 | opt_fork = 1; |
229 | else if (!strcmp (argv [i], "-o") || !strcmp (argv [i], "--opendisplay")) |
239 | else if (!strcmp (argv [i], "-o") || !strcmp (argv [i], "--opendisplay")) |
230 | opt_opendisplay = 1; |
240 | opt_opendisplay = 1; |
231 | else if (!strcmp (argv [i], "-q") || !strcmp (argv [i], "--quiet")) |
241 | else if (!strcmp (argv [i], "-q") || !strcmp (argv [i], "--quiet")) |
232 | opt_quiet = 1; |
242 | opt_quiet = 1; |
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243 | #if ENABLE_MLOCK |
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244 | else if (!strcmp (argv [i], "-m") || !strcmp (argv [i], "--mlock")) |
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245 | opt_lock = 1; |
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246 | #endif |
233 | else |
247 | else |
234 | { |
248 | { |
235 | rxvt_log ("%s: unknown option '%s', aborting.\n", argv [0], argv [i]); |
249 | rxvt_log ("%s: unknown option '%s', aborting.\n", argv [0], argv [i]); |
236 | return EXIT_FAILURE; |
250 | return EXIT_FAILURE; |
237 | } |
251 | } |
238 | } |
252 | } |
239 | |
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240 | chdir ("/"); |
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241 | |
253 | |
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254 | rxvt_init (); |
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255 | |
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256 | // optionally open display and never release it. |
242 | if (opt_opendisplay) |
257 | if (opt_opendisplay) |
243 | displays.get (getenv ("DISPLAY")); // open display and never release it |
258 | if (const char *dpy = getenv ("DISPLAY")) |
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259 | displays.get (dpy ? dpy : ":0"); // move string logic into rxvt_display maybe? |
244 | |
260 | |
245 | char *sockname = rxvt_connection::unix_sockname (); |
261 | char *sockname = rxvt_connection::unix_sockname (); |
246 | unix_listener l (sockname); |
262 | unix_listener l (sockname); |
247 | |
263 | |
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264 | chdir ("/"); |
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265 | |
248 | if (!opt_quiet) |
266 | if (!opt_quiet) |
249 | { |
267 | { |
250 | printf ("rxvt-unicode daemon listening on %s.\n", sockname); |
268 | printf ("rxvt-unicode daemon listening on %s.\n", sockname); |
251 | fflush (stdout); |
269 | fflush (stdout); |
252 | } |
270 | } |
253 | |
271 | |
254 | free (sockname); |
272 | free (sockname); |
255 | |
273 | |
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274 | pid_t pid = 0; |
256 | if (opt_fork) |
275 | if (opt_fork) |
257 | { |
276 | { |
258 | pid_t pid = fork (); |
277 | pid = fork (); |
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278 | } |
259 | |
279 | |
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280 | #if ENABLE_MLOCK |
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281 | // Optionally perform an mlockall so this process does not get swapped out. |
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282 | if (opt_lock && !pid) |
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283 | if (mlockall (MCL_CURRENT | MCL_FUTURE) < 0) |
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284 | perror ("unable to lock into ram"); |
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285 | #endif |
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286 | |
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287 | if (opt_fork) |
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288 | { |
260 | if (pid < 0) |
289 | if (pid < 0) |
261 | { |
290 | { |
262 | rxvt_log ("unable to fork daemon, aborting.\n"); |
291 | rxvt_log ("unable to fork daemon, aborting.\n"); |
263 | return EXIT_FAILURE; |
292 | return EXIT_FAILURE; |
264 | } |
293 | } |
265 | else if (pid > 0) |
294 | else if (pid > 0) |
266 | _exit (EXIT_SUCCESS); |
295 | _exit (EXIT_SUCCESS); |
267 | } |
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268 | |
296 | |
269 | io_manager::loop (); |
297 | ev_loop_fork (EV_DEFAULT_UC); |
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298 | } |
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299 | |
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300 | ev_run (); |
270 | |
301 | |
271 | return EXIT_SUCCESS; |
302 | return EXIT_SUCCESS; |
272 | } |
303 | } |
273 | |
304 | |