introduce INIT_STDERR_LOCKING macro
[paraslash.git] / audioc.c
1 /*
2 * Copyright (C) 2005-2007 Andre Noll <maan@systemlinux.org>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
17 */
18
19 /** \file audioc.c the client program used to connect to para_audiod */
20
21 #include "audioc.cmdline.h"
22 #include "para.h"
23 #include "net.h"
24 #include "string.h"
25 #include "fd.h"
26 #include "error.h"
27
28 INIT_AUDIOC_ERRLISTS;
29
30 struct audioc_args_info conf;
31 char *tmpfifo;
32
33 INIT_STDERR_LOGGING(conf.loglevel_arg);
34
35 static char *concat_args(const int argc, char * const *argv)
36 {
37 int i; char *buf = NULL;
38 for (i = 0; i < argc; i++) {
39 buf = para_strcat(buf, argv[i]);
40 if (i != argc - 1)
41 buf = para_strcat(buf, "\n");
42 }
43 return buf;
44 }
45
46 static char *configfile_exists(void)
47 {
48 static char *config_file;
49 struct stat statbuf;
50
51
52 if (!config_file) {
53 char *home = para_homedir();
54 config_file = make_message("%s/.paraslash/audioc.conf", home);
55 free(home);
56 }
57 if (!stat(config_file, &statbuf))
58 return config_file;
59 return NULL;
60 }
61
62 int main(int argc, char *argv[])
63 {
64 struct sockaddr_un unix_addr;
65 int ret = -E_AUDIOC_SYNTAX, fd, loaded = 0;
66 char *cf, *socket_name, *randname = para_tmpname(), *tmpsocket_name = NULL,
67 *buf = NULL, *hn = para_hostname(), *args, *home = para_homedir();
68
69
70 if (audioc_cmdline_parser(argc, argv, &conf))
71 goto out;
72 cf = configfile_exists();
73 if (cf) {
74 if (audioc_cmdline_parser_configfile(cf, &conf, 0, 0, 0)) {
75 fprintf(stderr, "parse error in config file\n");
76 exit(EXIT_FAILURE);
77 }
78 }
79 args = conf.inputs_num?
80 concat_args(conf.inputs_num, conf.inputs) :
81 para_strdup("stat");
82 buf = para_malloc(conf.bufsize_arg);
83 if (conf.socket_given)
84 socket_name = para_strdup(conf.socket_arg);
85 else
86 socket_name = make_message(
87 "/var/paraslash/audiod_socket.%s", hn);
88 if (conf.tmpdir_given)
89 tmpsocket_name = make_message("%s/audioc.sock.%s.%s",
90 conf.tmpdir_arg, hn, randname);
91 else
92 tmpsocket_name = make_message("%s/.paraslash/audioc_sock.%s.%s",
93 home, hn, randname);
94
95 ret = create_pf_socket(tmpsocket_name, &unix_addr, S_IRUSR | S_IWUSR);
96 unlink(tmpsocket_name);
97 if (ret < 0)
98 goto out;
99 fd = ret;
100 ret = -E_INIT_SOCK_ADDR;
101 if (init_unix_addr(&unix_addr, socket_name) < 0)
102 goto out;
103 ret = - E_AUDIOC_CONNECT;
104 if (connect(fd, (struct sockaddr *)&unix_addr, UNIX_PATH_MAX) < 0)
105 goto out;
106 ret = send_cred_buffer(fd, args);
107 if (ret < 0)
108 goto out;
109 for (;;) {
110 int max_fileno = -1, check_write = 0;
111 ssize_t len;
112 fd_set rfd, wfd;
113 FD_ZERO(&rfd);
114 FD_ZERO(&wfd);
115 if (loaded < conf.bufsize_arg)
116 para_fd_set(fd, &rfd, &max_fileno);
117 if (loaded > 0) {
118 para_fd_set(STDOUT_FILENO, &wfd, &max_fileno);
119 check_write = 1;
120 }
121 ret = -E_AUDIOC_OVERRUN;
122 if (max_fileno < 0)
123 goto out;
124 ret = para_select(max_fileno + 1, &rfd, &wfd, NULL);
125 if (ret < 0)
126 goto out;
127 if (loaded < conf.bufsize_arg && FD_ISSET(fd, &rfd)) {
128 len = recv_bin_buffer(fd, buf + loaded,
129 conf.bufsize_arg - loaded);
130 if (len <= 0) {
131 ret = len < 0? -E_AUDIOC_READ : 0;
132 goto out;
133 }
134 loaded += len;
135 }
136 if (check_write && FD_ISSET(STDOUT_FILENO, &wfd)) {
137 ret = write(STDOUT_FILENO, buf, loaded);
138 if (ret < 0) {
139 ret = -E_AUDIOC_WRITE;
140 goto out;
141 }
142 loaded -= ret;
143 }
144 }
145 out:
146 if (!ret && loaded && buf)
147 ret = write(STDOUT_FILENO, buf, loaded);
148 if (ret < 0)
149 PARA_ERROR_LOG("%s\n", PARA_STRERROR(-ret));
150 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
151 }