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 version_completer(struct i9e_completion_info *ci,
101 struct i9e_completion_result *cr)
103 char *opts[] = {"-v", NULL};
105 if (ci->word_num <= 2 && ci->word && ci->word[0] == '-')
106 i9e_complete_option(opts, ci, cr);
109 static void stat_completer(struct i9e_completion_info *ci,
110 struct i9e_completion_result *cr)
112 char *sia[] = {STATUS_ITEM_ARRAY NULL};
113 char *opts[] = {"-p", NULL};
115 if (ci->word_num <= 2 && ci->word && ci->word[0] == '-')
116 i9e_complete_option(opts, ci, cr);
118 i9e_extract_completions(ci->word, sia, &cr->matches);
121 static void grab_completer(struct i9e_completion_info *ci,
122 struct i9e_completion_result *cr)
124 char *opts[] = {"-ms", "-ms", "-ma", "-p=", "-n=", "-o", NULL};
125 i9e_complete_option(opts, ci, cr);
128 static struct i9e_completer audiod_completers[] = {
133 static void audioc_pre_select(struct sched *s, struct task *t)
135 struct audioc_task *at = container_of(t, struct audioc_task, task);
136 int ret = btr_node_status(at->btrn, 0, BTR_NT_ROOT);
140 para_fd_set(at->fd, &s->rfds, &s->max_fileno);
143 static int audioc_post_select(struct sched *s, struct task *t)
146 struct audioc_task *at = container_of(t, struct audioc_task, task);
147 int ret = btr_node_status(at->btrn, 0, BTR_NT_ROOT);
151 if (!FD_ISSET(at->fd, &s->rfds))
153 buf = para_malloc(conf.bufsize_arg);
154 ret = recv_bin_buffer(at->fd, buf, conf.bufsize_arg);
155 PARA_DEBUG_LOG("recv: %d\n", ret);
160 btr_add_output(buf, ret, at->btrn);
165 btr_remove_node(&at->btrn);
171 static struct audioc_task audioc_task = {
173 .pre_select = audioc_pre_select,
174 .post_select = audioc_post_select,
175 .status = "audioc task"
177 }, *at = &audioc_task;
179 static int audioc_i9e_line_handler(char *line)
184 PARA_DEBUG_LOG("line: %s\n", line);
185 ret = create_argv(line, " ", &conf.inputs);
188 conf.inputs_num = ret;
189 args = concat_args(conf.inputs_num, conf.inputs);
190 free_argv(conf.inputs);
193 conf.inputs_num = 0; /* required for audioc_cmdline_parser_free() */
194 ret = connect_audiod(socket_name, args);
198 ret = mark_fd_nonblocking(at->fd);
203 at->btrn = btr_new_node(&(struct btr_node_description)
204 EMBRACE(.name = "audioc line handler"));
206 register_task(&sched, &at->task);
207 i9e_attach_to_stdout(at->btrn);
216 __noreturn static void interactive_session(void)
220 struct sigaction act;
221 struct i9e_client_info ici = {
223 .prompt = "para_audioc> ",
224 .line_handler = audioc_i9e_line_handler,
225 .loglevel = loglevel,
226 .completers = audiod_completers,
228 PARA_NOTICE_LOG("\n%s\n", version_text("audioc"));
229 if (conf.history_file_given)
230 history_file = para_strdup(conf.history_file_arg);
232 char *home = para_homedir();
233 history_file = make_message("%s/.paraslash/audioc.history",
237 ici.history_file = history_file;
239 act.sa_handler = i9e_signal_dispatch;
240 sigemptyset(&act.sa_mask);
242 sigaction(SIGINT, &act, NULL);
243 sched.select_function = i9e_select;
245 sched.default_timeout.tv_sec = 1;
246 ret = i9e_open(&ici, &sched);
250 ret = schedule(&sched);
252 para_log = stderr_log;
255 audioc_cmdline_parser_free(&conf);
257 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
258 exit(ret < 0? EXIT_FAILURE : EXIT_SUCCESS);
261 __noreturn static void print_completions(void)
263 int ret = i9e_print_completions(audiod_completers);
264 exit(ret <= 0? EXIT_FAILURE : EXIT_SUCCESS);
267 #else /* HAVE_READLINE */
269 __noreturn static void interactive_session(void)
271 PARA_EMERG_LOG("interactive sessions not available\n");
275 __noreturn static void print_completions(void)
277 PARA_EMERG_LOG("command completion not available\n");
281 #endif /* HAVE_READLINE */
283 static char *configfile_exists(void)
287 char *home = para_homedir();
289 config_file = make_message("%s/.paraslash/audioc.conf", home);
291 if (!stat(config_file, &statbuf))
297 __noreturn static void print_help_and_die(void)
299 struct ggo_help h = DEFINE_GGO_HELP(audioc);
300 bool d = conf.detailed_help_given;
302 ggo_print_help(&h, d? GPH_STANDARD_FLAGS_DETAILED : GPH_STANDARD_FLAGS);
307 * The client program to connect to para_audiod.
309 * \param argc Usual argument count.
310 * \param argv Usual argument vector.
312 * It connects to the "well-known" local socket to communicate with
313 * para_audiod. Authentication is performed by sending a ucred buffer
314 * containing the user id to the local socket.
316 * Any data received from the socket is written to stdout.
318 * \return EXIT_SUCCESS or EXIT_FAILURE.
320 * \sa send_cred_buffer(), para_audioc(1), para_audiod(1).
322 int main(int argc, char *argv[])
325 char *cf, *buf = NULL, *args = NULL;
328 audioc_cmdline_parser(argc, argv, &conf);
329 loglevel = get_loglevel_by_name(conf.loglevel_arg);
330 version_handle_flag("audioc", conf.version_given);
331 if (conf.help_given || conf.detailed_help_given)
332 print_help_and_die();
333 cf = configfile_exists();
335 struct audioc_cmdline_parser_params params = {
339 .check_ambiguity = 0,
343 audioc_cmdline_parser_config_file(cf, &conf, ¶ms);
345 loglevel = get_loglevel_by_name(conf.loglevel_arg);
347 if (conf.socket_given)
348 socket_name = para_strdup(conf.socket_arg);
350 char *hn = para_hostname();
351 socket_name = make_message("/var/paraslash/audiod_socket.%s",
356 if (conf.complete_given)
359 if (conf.inputs_num == 0)
360 interactive_session();
361 args = concat_args(conf.inputs_num, conf.inputs);
363 ret = connect_audiod(socket_name, args);
368 ret = mark_fd_blocking(STDOUT_FILENO);
371 bufsize = conf.bufsize_arg;
372 buf = para_malloc(bufsize);
374 size_t n = ret = recv_bin_buffer(fd, buf, bufsize);
377 ret = write_all(STDOUT_FILENO, buf, n);
383 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
384 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;