1 | #include "rxvtlib.h" |
1 | /*----------------------------------------------------------------------* |
2 | #include "rxvtdaemon.h" |
2 | * File: rxvtd.C |
3 | #include "iom.h" |
3 | *----------------------------------------------------------------------* |
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4 | * |
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5 | * All portions of code are copyright by their respective author/s. |
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6 | * Copyright (c) 2003-2007 Marc Lehmann <pcg@goof.com> |
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7 | * |
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8 | * This program is free software; you can redistribute it and/or modify |
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9 | * it under the terms of the GNU General Public License as published by |
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10 | * the Free Software Foundation; either version 2 of the License, or |
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11 | * (at your option) any later version. |
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12 | * |
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13 | * This program is distributed in the hope that it will be useful, |
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | * GNU General Public License for more details. |
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17 | * |
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18 | * You should have received a copy of the GNU General Public License |
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19 | * along with this program; if not, write to the Free Software |
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20 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 | *----------------------------------------------------------------------*/ |
4 | |
22 | |
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23 | #include "../config.h" |
5 | #include <cstdio> |
24 | #include <cstdio> |
6 | #include <cstdlib> |
25 | #include <cstdlib> |
7 | #include <cstdarg> |
26 | #include <cstdarg> |
8 | #include <cstring> |
27 | #include <cstring> |
9 | |
28 | |
10 | #include <unistd.h> |
29 | #include <unistd.h> |
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30 | #include <fcntl.h> |
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31 | #include <sys/types.h> |
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32 | #include <sys/stat.h> |
11 | #include <sys/socket.h> |
33 | #include <sys/socket.h> |
12 | #include <sys/un.h> |
34 | #include <sys/un.h> |
13 | |
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 | |
14 | #include <cerrno> |
44 | #include <cerrno> |
15 | |
45 | |
16 | extern char **environ; |
46 | #include "rxvt.h" |
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47 | #include "rxvtdaemon.h" |
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48 | #include "libptytty.h" |
17 | |
49 | |
18 | struct server : rxvt_connection { |
50 | struct server : rxvt_connection { |
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51 | log_callback log_cb; |
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52 | getfd_callback getfd_cb; |
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53 | |
19 | 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; |
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55 | void log_msg (const char *msg); |
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56 | int getfd (int remote_fd); |
20 | |
57 | |
21 | server (int fd) |
58 | server (int fd) |
22 | : read_ev (this, &server::read_cb) |
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23 | { |
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 | |
24 | 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); |
25 | read_ev.start (fd, EVENT_READ); |
67 | read_ev.start (fd, ev::READ); |
26 | } |
68 | } |
27 | |
69 | |
28 | void err (const char *format = 0, ...); |
70 | void err (const char *format = 0, ...); |
29 | }; |
71 | }; |
30 | |
72 | |
31 | struct listener { |
73 | struct unix_listener { |
32 | int fd; |
74 | int fd; |
33 | |
75 | |
34 | 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; |
35 | |
77 | |
36 | listener (); |
78 | unix_listener (const char *sockname); |
37 | }; |
79 | }; |
38 | |
80 | |
39 | listener::listener () |
81 | unix_listener::unix_listener (const char *sockname) |
40 | : accept_ev (this, &listener::accept_cb) |
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41 | { |
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 | |
42 | if ((fd = socket (PF_LOCAL, SOCK_STREAM, 0)) < 0) |
93 | if ((fd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) |
43 | { |
94 | { |
44 | perror ("unable to create listening socket"); |
95 | perror ("unable to create listening socket"); |
45 | exit (EXIT_FAILURE); |
96 | exit (EXIT_FAILURE); |
46 | } |
97 | } |
47 | |
98 | |
48 | sockaddr_un sa; |
99 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
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100 | fcntl (fd, F_SETFL, O_NONBLOCK); |
49 | |
101 | |
50 | sa.sun_family = AF_UNIX; |
102 | sa.sun_family = AF_UNIX; |
51 | strcpy (sa.sun_path, rxvt_connection::unix_sockname ()); |
103 | strcpy (sa.sun_path, sockname); |
52 | |
104 | |
53 | unlink (rxvt_connection::unix_sockname ()); |
105 | unlink (rxvt_connection::unix_sockname ()); |
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106 | |
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107 | mode_t omask = umask (0077); |
54 | |
108 | |
55 | if (bind (fd, (sockaddr *)&sa, sizeof (sa))) |
109 | if (bind (fd, (sockaddr *)&sa, sizeof (sa))) |
56 | { |
110 | { |
57 | perror ("unable to bind listening socket"); |
111 | perror ("unable to bind listening socket"); |
58 | exit (EXIT_FAILURE); |
112 | exit (EXIT_FAILURE); |
59 | } |
113 | } |
60 | |
114 | |
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115 | umask (omask); |
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116 | |
61 | if (listen (fd, 5)) |
117 | if (listen (fd, 5)) |
62 | { |
118 | { |
63 | perror ("unable to listen on socket"); |
119 | perror ("unable to listen on socket"); |
64 | exit (EXIT_FAILURE); |
120 | exit (EXIT_FAILURE); |
65 | } |
121 | } |
66 | |
122 | |
67 | accept_ev.start (fd, EVENT_READ); |
123 | accept_ev.start (fd, ev::READ); |
68 | } |
124 | } |
69 | |
125 | |
70 | void listener::accept_cb (io_watcher &w, short revents) |
126 | void unix_listener::accept_cb (ev::io &w, int revents) |
71 | { |
127 | { |
72 | int fd2 = accept (fd, 0, 0); |
128 | int fd2 = accept (fd, 0, 0); |
73 | |
129 | |
74 | if (fd2 >= 0) |
130 | if (fd2 >= 0) |
75 | new server (fd2); |
131 | new server (fd2); |
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132 | } |
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133 | |
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134 | int server::getfd (int remote_fd) |
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135 | { |
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136 | send ("GETFD"); |
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137 | send (remote_fd); |
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138 | return ptytty::recv_fd (fd); |
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139 | } |
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140 | |
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141 | void server::log_msg (const char *msg) |
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142 | { |
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143 | send ("MSG"), send (msg); |
76 | } |
144 | } |
77 | |
145 | |
78 | void server::err (const char *format, ...) |
146 | void server::err (const char *format, ...) |
79 | { |
147 | { |
80 | if (format) |
148 | if (format) |
… | |
… | |
84 | va_list ap; |
152 | va_list ap; |
85 | va_start (ap, format); |
153 | va_start (ap, format); |
86 | vsnprintf (err, 1024, format, ap); |
154 | vsnprintf (err, 1024, format, ap); |
87 | va_end (ap); |
155 | va_end (ap); |
88 | |
156 | |
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157 | log_msg (err); |
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158 | } |
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159 | |
89 | send ("ERR"), send (err); |
160 | send ("END"), send (0); |
90 | } |
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91 | |
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92 | close (fd); |
161 | close (fd); |
93 | delete this; |
162 | delete this; |
94 | } |
163 | } |
95 | |
164 | |
96 | void server::read_cb (io_watcher &w, short revents) |
165 | void server::read_cb (ev::io &w, int revents) |
97 | { |
166 | { |
98 | auto_str tok; |
167 | auto_str tok; |
99 | |
168 | |
100 | if (recv (tok)) |
169 | if (recv (tok)) |
101 | { |
170 | { |
102 | if (!strcmp (tok, "NEW")) |
171 | if (!strcmp (tok, "NEW")) |
103 | { |
172 | { |
104 | stringvec argv; |
173 | stringvec *argv = new stringvec; |
105 | stringvec envv; |
174 | stringvec *envv = new stringvec; |
106 | |
175 | |
107 | for (;;) |
176 | for (;;) |
108 | { |
177 | { |
109 | if (!recv (tok)) |
178 | if (!recv (tok)) |
110 | return err (); |
179 | return err (); |
111 | |
180 | |
112 | if (!strcmp (tok, "END")) |
181 | if (!strcmp (tok, "END")) |
113 | break; |
182 | break; |
114 | else if (!strcmp (tok, "ENV") && recv (tok)) |
183 | else if (!strcmp (tok, "ENV") && recv (tok)) |
115 | envv.push_back (tok.get ()); |
184 | envv->push_back (strdup (tok)); |
116 | else if (!strcmp (tok, "CWD") && recv (tok)) |
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117 | { |
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118 | if (chdir (tok)) |
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119 | err ("unable to change to working directory to '%s': %s", |
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120 | (char *)tok, strerror (errno)); |
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121 | } |
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122 | else if (!strcmp (tok, "ARG") && recv (tok)) |
185 | else if (!strcmp (tok, "ARG") && recv (tok)) |
123 | argv.push_back (tok.get ()); |
186 | argv->push_back (strdup (tok)); |
124 | else |
187 | else |
125 | return err ("protocol error: unexpected NEW token"); |
188 | return err ("protocol error: unexpected NEW token.\n"); |
126 | } |
189 | } |
127 | |
190 | |
128 | envv.push_back (0); |
191 | envv->push_back (0); |
129 | |
192 | |
130 | { |
193 | { |
131 | char **old_environ = environ; |
194 | rxvt_term *term = new rxvt_term; |
132 | environ = envv.begin (); |
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133 | |
195 | |
134 | rxvt_init (argv.size (), argv.begin ()); |
196 | term->log_hook = &log_cb; |
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197 | term->getfd_hook = &getfd_cb; |
135 | |
198 | |
136 | environ = old_environ; |
199 | bool success = true; |
137 | envv.clear (); // can't yet save the env 'cause rxvt modifies it :( |
200 | |
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201 | try |
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202 | { |
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203 | term->init (argv, envv); |
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204 | } |
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205 | catch (const class rxvt_failure_exception &e) |
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206 | { |
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207 | success = false; |
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208 | } |
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209 | |
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210 | term->log_hook = 0; |
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211 | |
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212 | chdir ("/"); // init might change to different working directory |
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213 | |
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214 | if (!success) |
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215 | term->destroy (); |
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216 | |
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217 | send ("END"); send (success ? 1 : 0); |
138 | } |
218 | } |
139 | } |
219 | } |
140 | else |
220 | else |
141 | return err ("protocol error: request '%s' unsupported.", (char *)tok); |
221 | return err ("protocol error: request '%s' unsupported.\n", (char *)tok); |
142 | } |
222 | } |
143 | else |
223 | else |
144 | return err (); |
224 | return err (); |
145 | } |
225 | } |
146 | |
226 | |
147 | int |
227 | int |
148 | main(int argc, const char *const *argv) |
228 | main (int argc, const char *const *argv) |
149 | { |
229 | { |
150 | listener l; |
230 | ptytty::init (); |
151 | |
231 | |
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232 | int opt_fork = 0, opt_opendisplay = 0, opt_quiet = 0; |
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233 | #if ENABLE_MLOCK |
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234 | int opt_lock = 0; |
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235 | #endif |
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236 | |
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237 | for (int i = 1; i < argc; i++) |
152 | { |
238 | { |
153 | sigset_t ss; |
239 | if (!strcmp (argv [i], "-f") || !strcmp (argv [i], "--fork")) |
154 | |
240 | opt_fork = 1; |
155 | sigaddset (&ss, SIGHUP); |
241 | else if (!strcmp (argv [i], "-o") || !strcmp (argv [i], "--opendisplay")) |
156 | sigprocmask (SIG_BLOCK, &ss, 0); |
242 | opt_opendisplay = 1; |
157 | } |
243 | else if (!strcmp (argv [i], "-q") || !strcmp (argv [i], "--quiet")) |
158 | |
244 | opt_quiet = 1; |
159 | printf ("rxvtd running.\n"); |
245 | #if ENABLE_MLOCK |
160 | iom.loop (); |
246 | else if (!strcmp (argv [i], "-m") || !strcmp (argv [i], "--mlock")) |
161 | |
247 | opt_lock = 1; |
162 | #if 0 |
248 | #endif |
163 | if (rxvt_init(argc, argv) == NULL) |
249 | else |
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250 | { |
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251 | rxvt_log ("%s: unknown option '%s', aborting.\n", argv [0], argv [i]); |
164 | return EXIT_FAILURE; |
252 | return EXIT_FAILURE; |
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253 | } |
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254 | } |
165 | |
255 | |
166 | dR; |
256 | rxvt_init (); |
167 | rxvt_main_loop(aR); /* main processing loop */ |
257 | |
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258 | // optionally open display and never release it. |
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259 | if (opt_opendisplay) |
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260 | if (const char *dpy = getenv ("DISPLAY")) |
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261 | displays.get (dpy ? dpy : ":0"); // move string logic into rxvt_display maybe? |
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262 | |
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263 | char *sockname = rxvt_connection::unix_sockname (); |
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264 | unix_listener l (sockname); |
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265 | |
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266 | chdir ("/"); |
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267 | |
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268 | if (!opt_quiet) |
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269 | { |
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270 | printf ("rxvt-unicode daemon listening on %s.\n", sockname); |
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271 | fflush (stdout); |
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272 | } |
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273 | |
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274 | free (sockname); |
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275 | |
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276 | pid_t pid = 0; |
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277 | if (opt_fork) |
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278 | { |
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279 | pid = fork (); |
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280 | } |
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281 | |
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282 | #if ENABLE_MLOCK |
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283 | // Optionally perform an mlockall so this process does not get swapped out. |
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284 | if (opt_lock && !pid) |
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285 | if (mlockall (MCL_CURRENT | MCL_FUTURE) < 0) |
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286 | perror ("unable to lock into ram"); |
168 | #endif |
287 | #endif |
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288 | |
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289 | if (opt_fork) |
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290 | { |
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291 | if (pid < 0) |
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292 | { |
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293 | rxvt_log ("unable to fork daemon, aborting.\n"); |
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294 | return EXIT_FAILURE; |
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295 | } |
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296 | else if (pid > 0) |
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297 | _exit (EXIT_SUCCESS); |
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298 | |
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299 | ev_loop_fork (EV_DEFAULT_UC); |
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300 | } |
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301 | |
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302 | ev_run (); |
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303 | |
169 | return EXIT_SUCCESS; |
304 | return EXIT_SUCCESS; |
170 | } |
305 | } |
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306 | |