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");
45 static int connect_audiod(const char *sname, char *args)
49 ret = connect_local_socket(sname);
53 ret = send_cred_buffer(fd, args);
58 PARA_ERROR_LOG("could not connect %s\n", sname);
67 #include "buffer_tree.h"
68 #include "interactive.h"
69 #include "audiod_completion.h"
71 static struct sched sched;
75 struct btr_node *btrn;
79 static struct i9e_completer audiod_completers[];
81 I9E_DUMMY_COMPLETER(cycle);
82 I9E_DUMMY_COMPLETER(off);
83 I9E_DUMMY_COMPLETER(on);
84 I9E_DUMMY_COMPLETER(sb);
85 I9E_DUMMY_COMPLETER(tasks);
86 I9E_DUMMY_COMPLETER(term);
88 static void help_completer(struct i9e_completion_info *ci,
89 struct i9e_completion_result *result)
91 result->matches = i9e_complete_commands(ci->word, audiod_completers);
94 static void stat_completer(struct i9e_completion_info *ci,
95 struct i9e_completion_result *cr)
97 char *sia[] = {STATUS_ITEM_ARRAY NULL};
98 char *opts[] = {"-p", NULL};
100 if (ci->word_num <= 2 && ci->word && ci->word[0] == '-')
101 i9e_complete_option(opts, ci, cr);
103 i9e_extract_completions(ci->word, sia, &cr->matches);
106 static void grab_completer(struct i9e_completion_info *ci,
107 struct i9e_completion_result *cr)
109 char *opts[] = {"-ms", "-ms", "-ma", "-p=", "-n=", "-o", NULL};
110 i9e_complete_option(opts, ci, cr);
113 static struct i9e_completer audiod_completers[] = {
118 static void audioc_pre_select(struct sched *s, struct task *t)
120 struct audioc_task *at = container_of(t, struct audioc_task, task);
121 int ret = btr_node_status(at->btrn, 0, BTR_NT_ROOT);
125 para_fd_set(at->fd, &s->rfds, &s->max_fileno);
128 static int audioc_post_select(struct sched *s, struct task *t)
131 struct audioc_task *at = container_of(t, struct audioc_task, task);
132 int ret = btr_node_status(at->btrn, 0, BTR_NT_ROOT);
136 if (!FD_ISSET(at->fd, &s->rfds))
138 buf = para_malloc(conf.bufsize_arg);
139 ret = recv_bin_buffer(at->fd, buf, conf.bufsize_arg);
140 PARA_DEBUG_LOG("recv: %d\n", ret);
145 btr_add_output(buf, ret, at->btrn);
150 btr_remove_node(&at->btrn);
156 static struct audioc_task audioc_task = {
158 .pre_select = audioc_pre_select,
159 .post_select = audioc_post_select,
160 .status = "audioc task"
162 }, *at = &audioc_task;
164 static int audioc_i9e_line_handler(char *line)
171 PARA_DEBUG_LOG("line: %s\n", line);
172 ret = create_argv(line, " ", &conf.inputs);
175 conf.inputs_num = ret;
176 args = concat_args(conf.inputs_num, conf.inputs);
177 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"));
191 register_task(&sched, &at->task);
192 i9e_attach_to_stdout(at->btrn);
201 __noreturn static void interactive_session(void)
205 struct sigaction act;
206 struct i9e_client_info ici = {
208 .prompt = "para_audioc> ",
209 .line_handler = audioc_i9e_line_handler,
210 .loglevel = loglevel,
211 .completers = audiod_completers,
213 PARA_NOTICE_LOG("\n%s\n", VERSION_TEXT("audioc"));
214 if (conf.history_file_given)
215 history_file = para_strdup(conf.history_file_arg);
217 char *home = para_homedir();
218 history_file = make_message("%s/.paraslash/audioc.history",
222 ici.history_file = history_file;
224 act.sa_handler = i9e_signal_dispatch;
225 sigemptyset(&act.sa_mask);
227 sigaction(SIGINT, &act, NULL);
228 sched.select_function = i9e_select;
230 sched.default_timeout.tv_sec = 1;
231 ret = i9e_open(&ici, &sched);
235 ret = schedule(&sched);
237 para_log = stderr_log;
240 audioc_cmdline_parser_free(&conf);
242 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
243 exit(ret < 0? EXIT_FAILURE : EXIT_SUCCESS);
246 __noreturn static void print_completions(void)
248 int ret = i9e_print_completions(audiod_completers);
249 exit(ret <= 0? EXIT_FAILURE : EXIT_SUCCESS);
252 #else /* HAVE_READLINE */
254 __noreturn static void interactive_session(void)
256 PARA_EMERG_LOG("interactive sessions not available\n");
260 __noreturn static void print_completions(void)
262 PARA_EMERG_LOG("command completion not available\n");
266 #endif /* HAVE_READLINE */
268 static char *configfile_exists(void)
272 char *home = para_homedir();
274 config_file = make_message("%s/.paraslash/audioc.conf", home);
276 if (!stat(config_file, &statbuf))
283 * The client program to connect to para_audiod.
285 * \param argc Usual argument count.
286 * \param argv Usual argument vector.
288 * It connects to the "well-known" local socket to communicate with
289 * para_audiod. Authentication is performed by sending a ucred buffer
290 * containing the user id to the local socket.
292 * Any data received from the socket is written to stdout.
294 * \return EXIT_SUCCESS or EXIT_FAILURE.
296 * \sa send_cred_buffer(), para_audioc(1), para_audiod(1).
298 int main(int argc, char *argv[])
300 int ret = -E_AUDIOC_SYNTAX, fd;
301 char *cf, *buf = NULL, *args = NULL;
304 if (audioc_cmdline_parser(argc, argv, &conf))
306 HANDLE_VERSION_FLAG("audioc", conf);
307 cf = configfile_exists();
309 struct audioc_cmdline_parser_params params = {
315 ret = audioc_cmdline_parser_config_file(cf, &conf, ¶ms);
318 fprintf(stderr, "parse error in config file\n");
322 loglevel = get_loglevel_by_name(conf.loglevel_arg);
323 if (conf.socket_given)
324 socket_name = para_strdup(conf.socket_arg);
326 char *hn = para_hostname();
327 socket_name = make_message("/var/paraslash/audiod_socket.%s",
332 if (conf.complete_given)
335 if (conf.inputs_num == 0)
336 interactive_session();
337 args = concat_args(conf.inputs_num, conf.inputs);
339 ret = connect_audiod(socket_name, args);
344 ret = mark_fd_blocking(STDOUT_FILENO);
347 bufsize = conf.bufsize_arg;
348 buf = para_malloc(bufsize);
350 size_t n = ret = recv_bin_buffer(fd, buf, bufsize);
353 ret = write_all(STDOUT_FILENO, buf, n);
359 PARA_ERROR_LOG("%s\n", para_strerror(-ret));
360 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;