1 |
root |
1.29 |
/*----------------------------------------------------------------------* |
2 |
pcg |
1.14 |
* File: rxvtd.C |
3 |
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*----------------------------------------------------------------------* |
4 |
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* |
5 |
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* All portions of code are copyright by their respective author/s. |
6 |
root |
1.43 |
* Copyright (c) 2003-2007 Marc Lehmann <pcg@goof.com> |
7 |
pcg |
1.14 |
* |
8 |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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*----------------------------------------------------------------------*/ |
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pcg |
1.9 |
#include "../config.h" |
24 |
pcg |
1.1 |
#include <cstdio> |
25 |
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#include <cstdlib> |
26 |
pcg |
1.3 |
#include <cstdarg> |
27 |
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#include <cstring> |
28 |
pcg |
1.1 |
|
29 |
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#include <unistd.h> |
30 |
pcg |
1.12 |
#include <fcntl.h> |
31 |
pcg |
1.5 |
#include <sys/types.h> |
32 |
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#include <sys/stat.h> |
33 |
pcg |
1.1 |
#include <sys/socket.h> |
34 |
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#include <sys/un.h> |
35 |
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|
36 |
root |
1.47 |
#if defined(ENABLE_FRILLS) && defined(_POSIX_MEMLOCK) && _POSIX_MEMLOCK > 0 |
37 |
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# define ENABLE_MLOCK 1 |
38 |
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#endif |
39 |
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40 |
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#if ENABLE_MLOCK |
41 |
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# include <sys/mman.h> |
42 |
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#endif |
43 |
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|
44 |
pcg |
1.3 |
#include <cerrno> |
45 |
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46 |
root |
1.27 |
#include "rxvt.h" |
47 |
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#include "rxvtdaemon.h" |
48 |
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#include "libptytty.h" |
49 |
pcg |
1.3 |
|
50 |
pcg |
1.1 |
struct server : rxvt_connection { |
51 |
pcg |
1.10 |
log_callback log_cb; |
52 |
root |
1.22 |
getfd_callback getfd_cb; |
53 |
pcg |
1.10 |
|
54 |
root |
1.34 |
void read_cb (ev::io &w, int revents); ev::io read_ev; |
55 |
pcg |
1.10 |
void log_msg (const char *msg); |
56 |
root |
1.22 |
int getfd (int remote_fd); |
57 |
pcg |
1.1 |
|
58 |
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server (int fd) |
59 |
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{ |
60 |
root |
1.41 |
read_ev.set <server, &server::read_cb> (this); |
61 |
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log_cb.set <server, &server::log_msg> (this); |
62 |
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getfd_cb.set<server, &server::getfd> (this); |
63 |
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|
64 |
root |
1.37 |
this->fd = fd; |
65 |
root |
1.35 |
fcntl (fd, F_SETFD, FD_CLOEXEC); |
66 |
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fcntl (fd, F_SETFL, 0); |
67 |
root |
1.34 |
read_ev.start (fd, ev::READ); |
68 |
pcg |
1.1 |
} |
69 |
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|
70 |
pcg |
1.3 |
void err (const char *format = 0, ...); |
71 |
pcg |
1.1 |
}; |
72 |
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|
73 |
pcg |
1.5 |
struct unix_listener { |
74 |
pcg |
1.1 |
int fd; |
75 |
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|
76 |
root |
1.34 |
void accept_cb (ev::io &w, int revents); ev::io accept_ev; |
77 |
pcg |
1.1 |
|
78 |
pcg |
1.5 |
unix_listener (const char *sockname); |
79 |
pcg |
1.1 |
}; |
80 |
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|
81 |
pcg |
1.5 |
unix_listener::unix_listener (const char *sockname) |
82 |
pcg |
1.1 |
{ |
83 |
root |
1.41 |
accept_ev.set<unix_listener, &unix_listener::accept_cb> (this); |
84 |
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|
85 |
root |
1.30 |
sockaddr_un sa; |
86 |
ayin |
1.33 |
|
87 |
root |
1.31 |
if (strlen (sockname) >= sizeof(sa.sun_path)) |
88 |
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{ |
89 |
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fputs ("socket name too long, aborting.\n", stderr); |
90 |
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exit (EXIT_FAILURE); |
91 |
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} |
92 |
root |
1.30 |
|
93 |
root |
1.24 |
if ((fd = socket (AF_UNIX, SOCK_STREAM, 0)) < 0) |
94 |
pcg |
1.1 |
{ |
95 |
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perror ("unable to create listening socket"); |
96 |
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exit (EXIT_FAILURE); |
97 |
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} |
98 |
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99 |
pcg |
1.12 |
fcntl (fd, F_SETFD, FD_CLOEXEC); |
100 |
root |
1.35 |
fcntl (fd, F_SETFL, O_NONBLOCK); |
101 |
pcg |
1.12 |
|
102 |
pcg |
1.1 |
sa.sun_family = AF_UNIX; |
103 |
pcg |
1.5 |
strcpy (sa.sun_path, sockname); |
104 |
pcg |
1.1 |
|
105 |
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unlink (rxvt_connection::unix_sockname ()); |
106 |
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107 |
pcg |
1.5 |
mode_t omask = umask (0077); |
108 |
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109 |
pcg |
1.1 |
if (bind (fd, (sockaddr *)&sa, sizeof (sa))) |
110 |
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{ |
111 |
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perror ("unable to bind listening socket"); |
112 |
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exit (EXIT_FAILURE); |
113 |
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} |
114 |
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115 |
pcg |
1.5 |
umask (omask); |
116 |
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117 |
pcg |
1.1 |
if (listen (fd, 5)) |
118 |
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{ |
119 |
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perror ("unable to listen on socket"); |
120 |
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exit (EXIT_FAILURE); |
121 |
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} |
122 |
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123 |
root |
1.34 |
accept_ev.start (fd, ev::READ); |
124 |
pcg |
1.1 |
} |
125 |
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126 |
root |
1.34 |
void unix_listener::accept_cb (ev::io &w, int revents) |
127 |
pcg |
1.1 |
{ |
128 |
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int fd2 = accept (fd, 0, 0); |
129 |
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130 |
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if (fd2 >= 0) |
131 |
root |
1.35 |
new server (fd2); |
132 |
pcg |
1.1 |
} |
133 |
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134 |
root |
1.22 |
int server::getfd (int remote_fd) |
135 |
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{ |
136 |
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send ("GETFD"); |
137 |
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send (remote_fd); |
138 |
root |
1.27 |
return ptytty::recv_fd (fd); |
139 |
root |
1.22 |
} |
140 |
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141 |
pcg |
1.10 |
void server::log_msg (const char *msg) |
142 |
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{ |
143 |
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send ("MSG"), send (msg); |
144 |
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} |
145 |
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146 |
pcg |
1.3 |
void server::err (const char *format, ...) |
147 |
pcg |
1.1 |
{ |
148 |
pcg |
1.3 |
if (format) |
149 |
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{ |
150 |
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char err[1024]; |
151 |
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152 |
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va_list ap; |
153 |
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va_start (ap, format); |
154 |
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vsnprintf (err, 1024, format, ap); |
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va_end (ap); |
156 |
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157 |
root |
1.32 |
log_msg (err); |
158 |
pcg |
1.3 |
} |
159 |
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160 |
root |
1.32 |
send ("END"), send (0); |
161 |
pcg |
1.1 |
close (fd); |
162 |
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delete this; |
163 |
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} |
164 |
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165 |
root |
1.34 |
void server::read_cb (ev::io &w, int revents) |
166 |
pcg |
1.1 |
{ |
167 |
pcg |
1.2 |
auto_str tok; |
168 |
pcg |
1.1 |
|
169 |
pcg |
1.2 |
if (recv (tok)) |
170 |
pcg |
1.1 |
{ |
171 |
pcg |
1.2 |
if (!strcmp (tok, "NEW")) |
172 |
pcg |
1.1 |
{ |
173 |
pcg |
1.9 |
stringvec *argv = new stringvec; |
174 |
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stringvec *envv = new stringvec; |
175 |
ayin |
1.33 |
|
176 |
pcg |
1.2 |
for (;;) |
177 |
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{ |
178 |
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if (!recv (tok)) |
179 |
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return err (); |
180 |
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181 |
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if (!strcmp (tok, "END")) |
182 |
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break; |
183 |
pcg |
1.3 |
else if (!strcmp (tok, "ENV") && recv (tok)) |
184 |
root |
1.26 |
envv->push_back (strdup (tok)); |
185 |
pcg |
1.2 |
else if (!strcmp (tok, "ARG") && recv (tok)) |
186 |
root |
1.26 |
argv->push_back (strdup (tok)); |
187 |
pcg |
1.2 |
else |
188 |
root |
1.31 |
return err ("protocol error: unexpected NEW token.\n"); |
189 |
pcg |
1.2 |
} |
190 |
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191 |
pcg |
1.9 |
envv->push_back (0); |
192 |
pcg |
1.3 |
|
193 |
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{ |
194 |
pcg |
1.10 |
rxvt_term *term = new rxvt_term; |
195 |
ayin |
1.33 |
|
196 |
pcg |
1.10 |
term->log_hook = &log_cb; |
197 |
root |
1.22 |
term->getfd_hook = &getfd_cb; |
198 |
pcg |
1.2 |
|
199 |
root |
1.42 |
bool success = true; |
200 |
ayin |
1.33 |
|
201 |
pcg |
1.10 |
try |
202 |
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{ |
203 |
root |
1.42 |
term->init (argv, envv); |
204 |
pcg |
1.10 |
} |
205 |
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catch (const class rxvt_failure_exception &e) |
206 |
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{ |
207 |
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success = false; |
208 |
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} |
209 |
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210 |
root |
1.15 |
term->log_hook = 0; |
211 |
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212 |
root |
1.46 |
chdir ("/"); // init might change to different working directory |
213 |
pcg |
1.10 |
|
214 |
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if (!success) |
215 |
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term->destroy (); |
216 |
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217 |
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send ("END"); send (success ? 1 : 0); |
218 |
pcg |
1.3 |
} |
219 |
pcg |
1.1 |
} |
220 |
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else |
221 |
root |
1.31 |
return err ("protocol error: request '%s' unsupported.\n", (char *)tok); |
222 |
pcg |
1.1 |
} |
223 |
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else |
224 |
pcg |
1.2 |
return err (); |
225 |
pcg |
1.1 |
} |
226 |
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|
227 |
root |
1.21 |
int opt_fork, opt_opendisplay, opt_quiet; |
228 |
root |
1.47 |
#if ENABLE_MLOCK |
229 |
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int opt_lock; |
230 |
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#endif |
231 |
root |
1.21 |
|
232 |
pcg |
1.1 |
int |
233 |
pcg |
1.8 |
main (int argc, const char *const *argv) |
234 |
pcg |
1.1 |
{ |
235 |
root |
1.25 |
rxvt_init (); |
236 |
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|
237 |
root |
1.21 |
for (int i = 1; i < argc; i++) |
238 |
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{ |
239 |
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if (!strcmp (argv [i], "-f") || !strcmp (argv [i], "--fork")) |
240 |
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opt_fork = 1; |
241 |
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else if (!strcmp (argv [i], "-o") || !strcmp (argv [i], "--opendisplay")) |
242 |
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opt_opendisplay = 1; |
243 |
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else if (!strcmp (argv [i], "-q") || !strcmp (argv [i], "--quiet")) |
244 |
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opt_quiet = 1; |
245 |
root |
1.47 |
#if ENABLE_MLOCK |
246 |
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else if (!strcmp (argv [i], "-m") || !strcmp (argv [i], "--mlock")) |
247 |
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opt_lock = 1; |
248 |
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#endif |
249 |
root |
1.21 |
else |
250 |
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{ |
251 |
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rxvt_log ("%s: unknown option '%s', aborting.\n", argv [0], argv [i]); |
252 |
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return EXIT_FAILURE; |
253 |
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} |
254 |
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} |
255 |
ayin |
1.33 |
|
256 |
root |
1.45 |
// optionally open display and never release it. |
257 |
root |
1.21 |
if (opt_opendisplay) |
258 |
root |
1.45 |
if (const char *dpy = getenv ("DISPLAY")) |
259 |
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displays.get (dpy ? dpy : ":0"); // move string logic into rxvt_display maybe? |
260 |
root |
1.21 |
|
261 |
pcg |
1.5 |
char *sockname = rxvt_connection::unix_sockname (); |
262 |
|
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unix_listener l (sockname); |
263 |
root |
1.21 |
|
264 |
root |
1.44 |
chdir ("/"); |
265 |
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|
266 |
root |
1.21 |
if (!opt_quiet) |
267 |
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{ |
268 |
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printf ("rxvt-unicode daemon listening on %s.\n", sockname); |
269 |
|
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fflush (stdout); |
270 |
|
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} |
271 |
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|
272 |
pcg |
1.5 |
free (sockname); |
273 |
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|
274 |
root |
1.47 |
pid_t pid = 0; |
275 |
root |
1.21 |
if (opt_fork) |
276 |
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{ |
277 |
root |
1.47 |
pid = fork (); |
278 |
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} |
279 |
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|
280 |
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#if ENABLE_MLOCK |
281 |
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// Optionally preform a mlockall so this process does not get swapped out. |
282 |
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if (opt_lock && pid == 0) |
283 |
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if (mlockall(MCL_CURRENT | MCL_FUTURE) == -1) |
284 |
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perror("unable to lock into ram"); |
285 |
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#endif |
286 |
root |
1.21 |
|
287 |
root |
1.47 |
if (opt_fork) |
288 |
|
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{ |
289 |
root |
1.21 |
if (pid < 0) |
290 |
|
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{ |
291 |
|
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rxvt_log ("unable to fork daemon, aborting.\n"); |
292 |
|
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return EXIT_FAILURE; |
293 |
|
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} |
294 |
|
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else if (pid > 0) |
295 |
|
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_exit (EXIT_SUCCESS); |
296 |
root |
1.38 |
|
297 |
root |
1.39 |
ev_default_fork (); |
298 |
root |
1.21 |
} |
299 |
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|
300 |
root |
1.39 |
ev_loop (0); |
301 |
pcg |
1.1 |
|
302 |
|
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return EXIT_SUCCESS; |
303 |
|
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} |
304 |
pcg |
1.7 |
|