2 * Copyright (C) 2005-2014 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"
25 /** The gengetopt structure containing command line args. */
26 static struct audioc_args_info conf;
27 static char *socket_name;
31 INIT_STDERR_LOGGING(loglevel);
33 static char *concat_args(unsigned argc, char * const *argv)
38 for (i = 0; i < argc; i++) {
39 buf = para_strcat(buf, argv[i]);
41 buf = para_strcat(buf, "\n");
46 static int connect_audiod(const char *sname, char *args)
50 ret = connect_local_socket(sname);
54 ret = send_cred_buffer(fd, args);
59 PARA_ERROR_LOG("could not connect %s\n", sname);
68 #include "buffer_tree.h"
69 #include "interactive.h"
70 #include "audiod_completion.h"
72 static struct sched sched;
76 struct btr_node *btrn;
80 static struct i9e_completer audiod_completers[];
82 I9E_DUMMY_COMPLETER(cycle);
83 I9E_DUMMY_COMPLETER(off);
84 I9E_DUMMY_COMPLETER(on);
85 I9E_DUMMY_COMPLETER(sb);
86 I9E_DUMMY_COMPLETER(tasks);
87 I9E_DUMMY_COMPLETER(term);
89 static void help_completer(struct i9e_completion_info *ci,
90 struct i9e_completion_result *result)
92 result->matches = i9e_complete_commands(ci->word, audiod_completers);
95 static void stat_completer(struct i9e_completion_info *ci,
96 struct i9e_completion_result *cr)
98 char *sia[] = {STATUS_ITEM_ARRAY NULL};
99 char *opts[] = {"-p", NULL};
101 if (ci->word_num <= 2 && ci->word && ci->word[0] == '-')
102 i9e_complete_option(opts, ci, cr);
104 i9e_extract_completions(ci->word, sia, &cr->matches);
107 static void grab_completer(struct i9e_completion_info *ci,
108 struct i9e_completion_result *cr)
110 char *opts[] = {"-ms", "-ms", "-ma", "-p=", "-n=", "-o", NULL};
111 i9e_complete_option(opts, ci, cr);
114 static struct i9e_completer audiod_completers[] = {
119 static void audioc_pre_select(struct sched *s, struct task *t)
121 struct audioc_task *at = container_of(t, struct audioc_task, task);
122 int ret = btr_node_status(at->btrn, 0, BTR_NT_ROOT);
126 para_fd_set(at->fd, &s->rfds, &s->max_fileno);
129 static int audioc_post_select(struct sched *s, struct task *t)
132 struct audioc_task *at = container_of(t, struct audioc_task, task);
133 int ret = btr_node_status(at->btrn, 0, BTR_NT_ROOT);
137 if (!FD_ISSET(at->fd, &s->rfds))
139 buf = para_malloc(conf.bufsize_arg);
140 ret = recv_bin_buffer(at->fd, buf, conf.bufsize_arg);
141 PARA_DEBUG_LOG("recv: %d\n", ret);
146 btr_add_output(buf, ret, at->btrn);
151 btr_remove_node(&at->btrn);
157 static struct audioc_task audioc_task = {
159 .pre_select = audioc_pre_select,
160 .post_select = audioc_post_select,
161 .status = "audioc task"
163 }, *at = &audioc_task;
165 static int audioc_i9e_line_handler(char *line)
170 PARA_DEBUG_LOG("line: %s\n", line);
171 ret = create_argv(line, " ", &conf.inputs);
174 conf.inputs_num = ret;
175 args = concat_args(conf.inputs_num, conf.inputs);
176 free_argv(conf.inputs);
179 conf.inputs_num = 0; /* required for audioc_cmdline_parser_free() */
180 ret = connect_audiod(socket_name, args);
184 ret = mark_fd_nonblocking(at->fd);
189 at->btrn = btr_new_node(&(struct btr_node_description)
190 EMBRACE(.name = "audioc line handler"));
192 register_task(&sched, &at->task);
193 i9e_attach_to_stdout(at->btrn);
202 __noreturn static void interactive_session(void)
206 struct sigaction act;
207 struct i9e_client_info ici = {
209 .prompt = "para_audioc> ",
210 .line_handler = audioc_i9e_line_handler,
211 .loglevel = loglevel,
212 .completers = audiod_completers,
214 PARA_NOTICE_LOG("\n%s\n", version_text("audioc"));
215 if (conf.history_file_given)
216 history_file = para_strdup(conf.history_file_arg);
218 char *home = para_homedir();
219 history_file = make_message("%s/.paraslash/audioc.history",
223 ici.history_file = history_file;
225 act.sa_handler = i9e_signal_dispatch;
226 sigemptyset(&act.sa_mask);
228 sigaction(SIGINT, &act, NULL);
229 sched.select_function = i9e_select;
231 sched.default_timeout.tv_sec = 1;
232 ret = i9e_open(&ici, &sched);
236 ret = schedule(&sched);
238 para_log = stderr_log;
241 audioc_cmdline_parser_free(&conf);
243 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
244 exit(ret < 0? EXIT_FAILURE : EXIT_SUCCESS);
247 __noreturn static void print_completions(void)
249 int ret = i9e_print_completions(audiod_completers);
250 exit(ret <= 0? EXIT_FAILURE : EXIT_SUCCESS);
253 #else /* HAVE_READLINE */
255 __noreturn static void interactive_session(void)
257 PARA_EMERG_LOG("interactive sessions not available\n");
261 __noreturn static void print_completions(void)
263 PARA_EMERG_LOG("command completion not available\n");
267 #endif /* HAVE_READLINE */
269 static char *configfile_exists(void)
273 char *home = para_homedir();
275 config_file = make_message("%s/.paraslash/audioc.conf", home);
277 if (!stat(config_file, &statbuf))
283 __noreturn static void print_help_and_die(void)
285 struct ggo_help h = DEFINE_GGO_HELP(audioc);
286 bool d = conf.detailed_help_given;
288 ggo_print_help(&h, d? GPH_STANDARD_FLAGS_DETAILED : GPH_STANDARD_FLAGS);
293 * The client program to connect to para_audiod.
295 * \param argc Usual argument count.
296 * \param argv Usual argument vector.
298 * It connects to the "well-known" local socket to communicate with
299 * para_audiod. Authentication is performed by sending a ucred buffer
300 * containing the user id to the local socket.
302 * Any data received from the socket is written to stdout.
304 * \return EXIT_SUCCESS or EXIT_FAILURE.
306 * \sa send_cred_buffer(), para_audioc(1), para_audiod(1).
308 int main(int argc, char *argv[])
311 char *cf, *buf = NULL, *args = NULL;
314 audioc_cmdline_parser(argc, argv, &conf);
315 loglevel = get_loglevel_by_name(conf.loglevel_arg);
316 version_handle_flag("audioc", conf.version_given);
317 if (conf.help_given || conf.detailed_help_given)
318 print_help_and_die();
319 cf = configfile_exists();
321 struct audioc_cmdline_parser_params params = {
325 .check_ambiguity = 0,
329 audioc_cmdline_parser_config_file(cf, &conf, ¶ms);
331 loglevel = get_loglevel_by_name(conf.loglevel_arg);
333 if (conf.socket_given)
334 socket_name = para_strdup(conf.socket_arg);
336 char *hn = para_hostname();
337 socket_name = make_message("/var/paraslash/audiod_socket.%s",
342 if (conf.complete_given)
345 if (conf.inputs_num == 0)
346 interactive_session();
347 args = concat_args(conf.inputs_num, conf.inputs);
349 ret = connect_audiod(socket_name, args);
354 ret = mark_fd_blocking(STDOUT_FILENO);
357 bufsize = conf.bufsize_arg;
358 buf = para_malloc(bufsize);
360 size_t n = ret = recv_bin_buffer(fd, buf, bufsize);
363 ret = write_all(STDOUT_FILENO, buf, n);
369 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
370 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;