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. */
9 #include <netinet/in.h>
10 #include <sys/socket.h>
12 #include <sys/types.h>
13 #include <arpa/inet.h>
19 #include "audioc.cmdline.h"
30 /** The gengetopt structure containing command line args. */
31 static struct audioc_args_info conf;
32 static char *socket_name;
36 INIT_STDERR_LOGGING(loglevel);
38 static char *concat_args(unsigned argc, char * const *argv)
43 for (i = 0; i < argc; i++) {
44 buf = para_strcat(buf, argv[i]);
46 buf = para_strcat(buf, "\n");
51 static int connect_audiod(const char *sname, char *args)
55 ret = connect_local_socket(sname);
59 ret = send_cred_buffer(fd, args);
64 PARA_ERROR_LOG("could not connect %s\n", sname);
73 #include "buffer_tree.h"
74 #include "interactive.h"
75 #include "audiod_completion.h"
77 static struct sched sched;
81 struct btr_node *btrn;
85 static struct i9e_completer audiod_completers[];
87 I9E_DUMMY_COMPLETER(cycle);
88 I9E_DUMMY_COMPLETER(off);
89 I9E_DUMMY_COMPLETER(on);
90 I9E_DUMMY_COMPLETER(sb);
91 I9E_DUMMY_COMPLETER(tasks);
92 I9E_DUMMY_COMPLETER(term);
94 static void help_completer(struct i9e_completion_info *ci,
95 struct i9e_completion_result *result)
97 result->matches = i9e_complete_commands(ci->word, audiod_completers);
100 static void stat_completer(struct i9e_completion_info *ci,
101 struct i9e_completion_result *cr)
103 char *sia[] = {STATUS_ITEM_ARRAY NULL};
104 char *opts[] = {"-p", NULL};
106 if (ci->word_num <= 2 && ci->word && ci->word[0] == '-')
107 i9e_complete_option(opts, ci, cr);
109 i9e_extract_completions(ci->word, sia, &cr->matches);
112 static void grab_completer(struct i9e_completion_info *ci,
113 struct i9e_completion_result *cr)
115 char *opts[] = {"-ms", "-ms", "-ma", "-p=", "-n=", "-o", NULL};
116 i9e_complete_option(opts, ci, cr);
119 static struct i9e_completer audiod_completers[] = {
124 static void audioc_pre_select(struct sched *s, struct task *t)
126 struct audioc_task *at = task_context(t);
127 int ret = btr_node_status(at->btrn, 0, BTR_NT_ROOT);
131 para_fd_set(at->fd, &s->rfds, &s->max_fileno);
134 static int audioc_post_select(struct sched *s, struct task *t)
137 struct audioc_task *at = task_context(t);
138 int ret = btr_node_status(at->btrn, 0, BTR_NT_ROOT);
142 if (!FD_ISSET(at->fd, &s->rfds))
144 buf = para_malloc(conf.bufsize_arg);
145 ret = recv_bin_buffer(at->fd, buf, conf.bufsize_arg);
146 PARA_DEBUG_LOG("recv: %d\n", ret);
151 btr_add_output(buf, ret, at->btrn);
156 btr_remove_node(&at->btrn);
162 static struct audioc_task audioc_task, *at = &audioc_task;
164 static int audioc_i9e_line_handler(char *line)
169 PARA_DEBUG_LOG("line: %s\n", line);
170 ret = create_argv(line, " ", &conf.inputs);
173 conf.inputs_num = ret;
174 args = concat_args(conf.inputs_num, conf.inputs);
175 free_argv(conf.inputs);
178 conf.inputs_num = 0; /* required for audioc_cmdline_parser_free() */
179 ret = connect_audiod(socket_name, args);
183 ret = mark_fd_nonblocking(at->fd);
188 at->btrn = btr_new_node(&(struct btr_node_description)
189 EMBRACE(.name = "audioc line handler"));
190 at->task = task_register(&(struct task_info) {
192 .pre_select = audioc_pre_select,
193 .post_select = audioc_post_select,
196 i9e_attach_to_stdout(at->btrn);
205 __noreturn static void interactive_session(void)
209 struct sigaction act;
210 struct i9e_client_info ici = {
212 .prompt = "para_audioc> ",
213 .line_handler = audioc_i9e_line_handler,
214 .loglevel = loglevel,
215 .completers = audiod_completers,
217 PARA_NOTICE_LOG("\n%s\n", version_text("audioc"));
218 if (conf.history_file_given)
219 history_file = para_strdup(conf.history_file_arg);
221 char *home = para_homedir();
222 history_file = make_message("%s/.paraslash/audioc.history",
226 ici.history_file = history_file;
228 act.sa_handler = i9e_signal_dispatch;
229 sigemptyset(&act.sa_mask);
231 sigaction(SIGINT, &act, NULL);
232 sched.select_function = i9e_select;
234 sched.default_timeout.tv_sec = 1;
235 ret = i9e_open(&ici, &sched);
239 ret = schedule(&sched);
240 sched_shutdown(&sched);
242 para_log = stderr_log;
245 audioc_cmdline_parser_free(&conf);
247 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
248 exit(ret < 0? EXIT_FAILURE : EXIT_SUCCESS);
251 __noreturn static void print_completions(void)
253 int ret = i9e_print_completions(audiod_completers);
254 exit(ret <= 0? EXIT_FAILURE : EXIT_SUCCESS);
257 #else /* HAVE_READLINE */
259 __noreturn static void interactive_session(void)
261 PARA_EMERG_LOG("interactive sessions not available\n");
265 __noreturn static void print_completions(void)
267 PARA_EMERG_LOG("command completion not available\n");
271 #endif /* HAVE_READLINE */
273 static char *configfile_exists(void)
277 char *home = para_homedir();
279 config_file = make_message("%s/.paraslash/audioc.conf", home);
281 if (!stat(config_file, &statbuf))
287 __noreturn static void print_help_and_die(void)
289 struct ggo_help h = DEFINE_GGO_HELP(audioc);
290 bool d = conf.detailed_help_given;
292 ggo_print_help(&h, d? GPH_STANDARD_FLAGS_DETAILED : GPH_STANDARD_FLAGS);
297 * The client program to connect to para_audiod.
299 * \param argc Usual argument count.
300 * \param argv Usual argument vector.
302 * It connects to the "well-known" local socket to communicate with
303 * para_audiod. Authentication is performed by sending a ucred buffer
304 * containing the user id to the local socket.
306 * Any data received from the socket is written to stdout.
308 * \return EXIT_SUCCESS or EXIT_FAILURE.
310 * \sa send_cred_buffer(), para_audioc(1), para_audiod(1).
312 int main(int argc, char *argv[])
315 char *cf, *buf = NULL, *args = NULL;
318 audioc_cmdline_parser(argc, argv, &conf);
319 loglevel = get_loglevel_by_name(conf.loglevel_arg);
320 version_handle_flag("audioc", conf.version_given);
321 if (conf.help_given || conf.detailed_help_given)
322 print_help_and_die();
323 cf = configfile_exists();
325 struct audioc_cmdline_parser_params params = {
329 .check_ambiguity = 0,
333 audioc_cmdline_parser_config_file(cf, &conf, ¶ms);
335 loglevel = get_loglevel_by_name(conf.loglevel_arg);
337 if (conf.socket_given)
338 socket_name = para_strdup(conf.socket_arg);
340 char *hn = para_hostname();
341 socket_name = make_message("/var/paraslash/audiod_socket.%s",
346 if (conf.complete_given)
349 if (conf.inputs_num == 0)
350 interactive_session();
351 args = concat_args(conf.inputs_num, conf.inputs);
353 ret = connect_audiod(socket_name, args);
358 ret = mark_fd_blocking(STDOUT_FILENO);
361 bufsize = conf.bufsize_arg;
362 buf = para_malloc(bufsize);
364 size_t n = ret = recv_bin_buffer(fd, buf, bufsize);
367 ret = write_all(STDOUT_FILENO, buf, n);
373 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
374 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;