Remove some unnecessary includes.
[paraslash.git] / audioc.c
1 /*
2 * Copyright (C) 2005-2011 Andre Noll <maan@systemlinux.org>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6
7 /** \file audioc.c the client program used to connect to para_audiod */
8
9 #include <regex.h>
10 #include <sys/types.h>
11
12 #include "audioc.cmdline.h"
13 #include "para.h"
14 #include "error.h"
15 #include "net.h"
16 #include "string.h"
17 #include "fd.h"
18
19 INIT_AUDIOC_ERRLISTS;
20
21 /** The gengetopt structure containing command line args. */
22 static struct audioc_args_info conf;
23
24 static int loglevel;
25 INIT_STDERR_LOGGING(loglevel);
26
27 static char *concat_args(unsigned argc, char * const *argv)
28 {
29 int i; char *buf = NULL;
30 for (i = 0; i < argc; i++) {
31 buf = para_strcat(buf, argv[i]);
32 if (i != argc - 1)
33 buf = para_strcat(buf, "\n");
34 }
35 return buf;
36 }
37
38 static char *configfile_exists(void)
39 {
40 static char *config_file;
41 struct stat statbuf;
42
43
44 if (!config_file) {
45 char *home = para_homedir();
46 config_file = make_message("%s/.paraslash/audioc.conf", home);
47 free(home);
48 }
49 if (!stat(config_file, &statbuf))
50 return config_file;
51 return NULL;
52 }
53
54 /**
55 * the client program to connect to para_audiod
56 *
57 * \param argc usual argument count
58 * \param argv usual argument vector
59 *
60 * It creates a temporary local socket in order to communicate with para_audiod.
61 * Authentication consists in sending a ucred buffer that contains the user id.
62 *
63 * Any output received through the local socket is sent to stdout.
64 *
65 * \return EXIT_SUCCESS or EXIT_FAILURE
66 *
67 * \sa send_cred_buffer(), para_audioc(1), para_audiod(1).
68 */
69 int main(int argc, char *argv[])
70 {
71 int ret = -E_AUDIOC_SYNTAX, fd;
72 char *cf, *buf = NULL, *args;
73 size_t bufsize;
74
75 if (audioc_cmdline_parser(argc, argv, &conf))
76 goto out;
77 HANDLE_VERSION_FLAG("audioc", conf);
78 cf = configfile_exists();
79 if (cf) {
80 struct audioc_cmdline_parser_params params = {
81 .override = 0,
82 .initialize = 0,
83 .check_required = 0,
84 .check_ambiguity = 0
85 };
86 if (audioc_cmdline_parser_config_file(cf, &conf, &params)) {
87 fprintf(stderr, "parse error in config file\n");
88 exit(EXIT_FAILURE);
89 }
90 }
91 loglevel = get_loglevel_by_name(conf.loglevel_arg);
92 args = conf.inputs_num?
93 concat_args(conf.inputs_num, conf.inputs) :
94 para_strdup("stat");
95
96 if (conf.socket_given)
97 ret = connect_local_socket(conf.socket_arg);
98 else {
99 char *hn = para_hostname(), *socket_name = make_message(
100 "/var/paraslash/audiod_socket.%s", hn);
101 ret = connect_local_socket(socket_name);
102 free(hn);
103 free(socket_name);
104 }
105 if (ret < 0) {
106 PARA_EMERG_LOG("failed to connect to local socket\n");
107 goto out;
108 }
109 fd = ret;
110 ret = send_cred_buffer(fd, args);
111 if (ret < 0)
112 goto out;
113 bufsize = conf.bufsize_arg;
114 buf = para_malloc(bufsize);
115 do {
116 size_t n = ret = recv_bin_buffer(fd, buf, bufsize);
117 if (ret <= 0)
118 break;
119 ret = write_all(STDOUT_FILENO, buf, &n);
120 } while (ret >= 0);
121 out:
122 if (ret < 0)
123 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
124 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
125 }