2 * Copyright (C) 2005-2013 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file audioc.c The client program used to connect to para_audiod. */
10 #include <sys/types.h>
14 #include "audioc.cmdline.h"
24 /** The gengetopt structure containing command line args. */
25 static struct audioc_args_info conf;
26 static char *socket_name;
30 INIT_STDERR_LOGGING(loglevel);
32 static char *concat_args(unsigned argc, char * const *argv)
37 for (i = 0; i < argc; i++) {
38 buf = para_strcat(buf, argv[i]);
40 buf = para_strcat(buf, "\n");
48 #include "buffer_tree.h"
49 #include "interactive.h"
50 #include "audiod_completion.h"
52 static struct sched sched;
56 struct btr_node *btrn;
60 static struct i9e_completer audiod_completers[];
62 I9E_DUMMY_COMPLETER(cycle);
63 I9E_DUMMY_COMPLETER(off);
64 I9E_DUMMY_COMPLETER(on);
65 I9E_DUMMY_COMPLETER(sb);
66 I9E_DUMMY_COMPLETER(tasks);
67 I9E_DUMMY_COMPLETER(term);
69 static void help_completer(struct i9e_completion_info *ci,
70 struct i9e_completion_result *result)
72 result->matches = i9e_complete_commands(ci->word, audiod_completers);
75 static void stat_completer(struct i9e_completion_info *ci,
76 struct i9e_completion_result *cr)
78 char *sia[] = {STATUS_ITEM_ARRAY NULL};
79 char *opts[] = {"-p", NULL};
81 if (ci->word_num <= 2 && ci->word && ci->word[0] == '-')
82 i9e_complete_option(opts, ci, cr);
84 i9e_extract_completions(ci->word, sia, &cr->matches);
87 static void grab_completer(struct i9e_completion_info *ci,
88 struct i9e_completion_result *cr)
90 char *opts[] = {"-ms", "-ms", "-ma", "-p=", "-n=", "-o", NULL};
91 i9e_complete_option(opts, ci, cr);
94 static struct i9e_completer audiod_completers[] = {
99 static void audioc_pre_select(struct sched *s, struct task *t)
101 struct audioc_task *at = container_of(t, struct audioc_task, task);
102 int ret = btr_node_status(at->btrn, 0, BTR_NT_ROOT);
106 para_fd_set(at->fd, &s->rfds, &s->max_fileno);
109 static int audioc_post_select(struct sched *s, struct task *t)
112 struct audioc_task *at = container_of(t, struct audioc_task, task);
113 int ret = btr_node_status(at->btrn, 0, BTR_NT_ROOT);
117 if (!FD_ISSET(at->fd, &s->rfds))
119 buf = para_malloc(conf.bufsize_arg);
120 ret = recv_bin_buffer(at->fd, buf, conf.bufsize_arg);
121 PARA_DEBUG_LOG("recv: %d\n", ret);
126 btr_add_output(buf, ret, at->btrn);
131 btr_remove_node(&at->btrn);
137 static struct audioc_task audioc_task = {
139 .pre_select = audioc_pre_select,
140 .post_select = audioc_post_select,
141 .status = "audioc task"
143 }, *at = &audioc_task;
145 static int audioc_i9e_line_handler(char *line)
152 PARA_DEBUG_LOG("line: %s\n", line);
153 ret = create_argv(line, " ", &conf.inputs);
156 conf.inputs_num = ret;
157 args = concat_args(conf.inputs_num, conf.inputs);
158 free_argv(conf.inputs);
159 conf.inputs_num = 0; /* required for audioc_cmdline_parser_free() */
160 ret = connect_local_socket(socket_name);
164 ret = mark_fd_nonblocking(at->fd);
167 ret = send_cred_buffer(at->fd, args);
172 at->btrn = btr_new_node(&(struct btr_node_description)
173 EMBRACE(.name = "audioc line handler"));
175 register_task(&sched, &at->task);
176 i9e_attach_to_stdout(at->btrn);
185 __noreturn static void interactive_session(void)
189 struct sigaction act;
190 struct i9e_client_info ici = {
192 .prompt = "para_audioc> ",
193 .line_handler = audioc_i9e_line_handler,
194 .loglevel = loglevel,
195 .completers = audiod_completers,
197 PARA_NOTICE_LOG("\n%s\n", VERSION_TEXT("audioc"));
198 if (conf.history_file_given)
199 history_file = para_strdup(conf.history_file_arg);
201 char *home = para_homedir();
202 history_file = make_message("%s/.paraslash/audioc.history",
206 ici.history_file = history_file;
208 act.sa_handler = i9e_signal_dispatch;
209 sigemptyset(&act.sa_mask);
211 sigaction(SIGINT, &act, NULL);
212 sched.select_function = i9e_select;
214 sched.default_timeout.tv_sec = 1;
215 ret = i9e_open(&ici, &sched);
219 ret = schedule(&sched);
221 para_log = stderr_log;
224 audioc_cmdline_parser_free(&conf);
226 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
227 exit(ret < 0? EXIT_FAILURE : EXIT_SUCCESS);
230 __noreturn static void print_completions(void)
232 int ret = i9e_print_completions(audiod_completers);
233 exit(ret <= 0? EXIT_FAILURE : EXIT_SUCCESS);
236 #else /* HAVE_READLINE */
238 __noreturn static void interactive_session(void)
240 PARA_EMERG_LOG("interactive sessions not available\n");
244 __noreturn static void print_completions(void)
246 PARA_EMERG_LOG("command completion not available\n");
250 #endif /* HAVE_READLINE */
252 static char *configfile_exists(void)
256 char *home = para_homedir();
258 config_file = make_message("%s/.paraslash/audioc.conf", home);
260 if (!stat(config_file, &statbuf))
267 * The client program to connect to para_audiod.
269 * \param argc Usual argument count.
270 * \param argv Usual argument vector.
272 * It connects to the "well-known" local socket to communicate with
273 * para_audiod. Authentication is performed by sending a ucred buffer
274 * containing the user id to the local socket.
276 * Any data received from the socket is written to stdout.
278 * \return EXIT_SUCCESS or EXIT_FAILURE.
280 * \sa send_cred_buffer(), para_audioc(1), para_audiod(1).
282 int main(int argc, char *argv[])
284 int ret = -E_AUDIOC_SYNTAX, fd;
285 char *cf, *buf = NULL, *args = NULL;
288 if (audioc_cmdline_parser(argc, argv, &conf))
290 HANDLE_VERSION_FLAG("audioc", conf);
291 cf = configfile_exists();
293 struct audioc_cmdline_parser_params params = {
297 .check_ambiguity = 0,
301 ret = audioc_cmdline_parser_config_file(cf, &conf, ¶ms);
304 fprintf(stderr, "parse error in config file\n");
308 loglevel = get_loglevel_by_name(conf.loglevel_arg);
309 if (conf.socket_given)
310 socket_name = para_strdup(conf.socket_arg);
312 char *hn = para_hostname();
313 socket_name = make_message("/var/paraslash/audiod_socket.%s",
318 if (conf.complete_given)
321 if (conf.inputs_num == 0)
322 interactive_session();
323 args = concat_args(conf.inputs_num, conf.inputs);
325 ret = connect_local_socket(socket_name);
328 PARA_EMERG_LOG("failed to connect to local socket\n");
332 ret = send_cred_buffer(fd, args);
335 bufsize = conf.bufsize_arg;
336 buf = para_malloc(bufsize);
337 ret = mark_fd_blocking(STDOUT_FILENO);
341 size_t n = ret = recv_bin_buffer(fd, buf, bufsize);
344 ret = write_all(STDOUT_FILENO, buf, n);
350 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
351 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;