2 * This file is part of Disobedience
3 * Copyright (C) 2007 Richard Kettlewell
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 /** @file disobedience/rtp.c
21 * @brief RTP player support for Disobedience
24 #include "disobedience.h"
30 /** @brief Path to RTP player's control socket */
31 static char *rtp_socket;
33 /** @brief Path to RTP player's logfile */
36 /** @brief Initialize @ref rtp_socket and @ref rtp_log if necessary */
37 static void rtp_init(void) {
39 const char *home = getenv("HOME");
42 byte_xasprintf(&dir, "%s/.disorder", home);
44 byte_xasprintf(&rtp_socket, "%s/rtp", dir);
45 byte_xasprintf(&rtp_log, "%s/rtp.log", dir);
49 /** @brief Return a connection to the RTP player's control socket */
50 static FILE *rtp_connect(void) {
51 struct sockaddr_un un;
56 memset(&un, 0, sizeof un);
57 un.sun_family = AF_UNIX;
58 strcpy(un.sun_path, rtp_socket);
59 fd = xsocket(PF_UNIX, SOCK_STREAM, 0);
60 if(connect(fd, (const struct sockaddr *)&un, sizeof un) < 0) {
61 /* Connection refused just means that the player quit without deleting its
68 /* Anything else may be a problem */
69 fpopup_msg(GTK_MESSAGE_ERROR, "connecting to %s: %s",
70 rtp_socket, strerror(errno));
76 if(!(fp = fdopen(fd, "r+"))) {
77 fpopup_msg(GTK_MESSAGE_ERROR, "error calling fdopen: %s", strerror(errno));
84 /** @brief Return non-0 iff the RTP player is running */
85 int rtp_running(void) {
86 FILE *fp = rtp_connect();
89 return 0; /* no connection -> not running */
90 fclose(fp); /* connection -> running */
94 /** @brief Activate the RTP player if it is not running */
95 void start_rtp(void) {
100 return; /* already running */
101 /* double-fork so we don't have to wait() later */
102 if(!(pid = xfork())) {
104 fatal(errno, "error calling setsid");
105 if(!(pid = xfork())) {
108 /* log errors and output somewhere reasonably sane. rtp_running()
109 * will have made sure the directory exists. */
110 if((fd = open(rtp_log, O_WRONLY|O_CREAT|O_TRUNC, 0600)) < 0)
111 fatal(errno, "creating %s", rtp_log);
114 fatal(errno, "dup2");
116 fatal(errno, "close");
117 /* We don't want to hang onto whatever stdin was */
118 if((fd = open("/dev/null", O_RDONLY)) < 0)
119 fatal(errno, "opening /dev/null");
121 fatal(errno, "dup2");
123 fatal(errno, "close");
124 /* execute the player */
125 execlp("disorder-playrtp",
126 "disorder-playrtp", "--socket", rtp_socket, (char *)0);
127 fatal(errno, "disorder-playrtp");
134 while(waitpid(pid, &w, 0) < 0 && errno == EINTR)
139 /** @brief Stop the RTP player if it is running */
140 void stop_rtp(void) {
141 FILE *fp = rtp_connect();
144 return; /* already stopped */
145 fprintf(fp, "stop\n");