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"
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");
49 #include "buffer_tree.h"
50 #include "interactive.h"
51 #include "audiod_completion.h"
53 static struct sched sched
;
57 struct btr_node
*btrn
;
61 static struct i9e_completer audiod_completers
[];
63 I9E_DUMMY_COMPLETER(cycle
);
64 I9E_DUMMY_COMPLETER(off
);
65 I9E_DUMMY_COMPLETER(on
);
66 I9E_DUMMY_COMPLETER(sb
);
67 I9E_DUMMY_COMPLETER(tasks
);
68 I9E_DUMMY_COMPLETER(term
);
70 static void help_completer(struct i9e_completion_info
*ci
,
71 struct i9e_completion_result
*result
)
73 result
->matches
= i9e_complete_commands(ci
->word
, audiod_completers
);
76 static void stat_completer(struct i9e_completion_info
*ci
,
77 struct i9e_completion_result
*cr
)
79 char *sia
[] = {STATUS_ITEM_ARRAY NULL
};
80 char *opts
[] = {"-p", NULL
};
82 if (ci
->word_num
<= 2 && ci
->word
&& ci
->word
[0] == '-')
83 i9e_complete_option(opts
, ci
, cr
);
85 i9e_extract_completions(ci
->word
, sia
, &cr
->matches
);
88 static void grab_completer(struct i9e_completion_info
*ci
,
89 struct i9e_completion_result
*cr
)
91 char *opts
[] = {"-ms", "-ms", "-ma", "-p=", "-n=", "-o", NULL
};
92 i9e_complete_option(opts
, ci
, cr
);
95 static struct i9e_completer audiod_completers
[] = {
100 static void audioc_pre_select(struct sched
*s
, struct task
*t
)
102 struct audioc_task
*at
= container_of(t
, struct audioc_task
, task
);
103 int ret
= btr_node_status(at
->btrn
, 0, BTR_NT_ROOT
);
107 para_fd_set(at
->fd
, &s
->rfds
, &s
->max_fileno
);
110 static int audioc_post_select(struct sched
*s
, struct task
*t
)
113 struct audioc_task
*at
= container_of(t
, struct audioc_task
, task
);
114 int ret
= btr_node_status(at
->btrn
, 0, BTR_NT_ROOT
);
118 if (!FD_ISSET(at
->fd
, &s
->rfds
))
120 buf
= para_malloc(conf
.bufsize_arg
);
121 ret
= recv_bin_buffer(at
->fd
, buf
, conf
.bufsize_arg
);
122 PARA_DEBUG_LOG("recv: %d\n", ret
);
127 btr_add_output(buf
, ret
, at
->btrn
);
132 btr_remove_node(&at
->btrn
);
138 static struct audioc_task audioc_task
= {
140 .pre_select
= audioc_pre_select
,
141 .post_select
= audioc_post_select
,
142 .status
= "audioc task"
144 }, *at
= &audioc_task
;
146 static int audioc_i9e_line_handler(char *line
)
153 PARA_DEBUG_LOG("line: %s\n", line
);
154 ret
= create_argv(line
, " ", &conf
.inputs
);
157 conf
.inputs_num
= ret
;
158 args
= concat_args(conf
.inputs_num
, conf
.inputs
);
159 free_argv(conf
.inputs
);
160 conf
.inputs_num
= 0; /* required for audioc_cmdline_parser_free() */
161 ret
= connect_local_socket(socket_name
);
165 ret
= mark_fd_nonblocking(at
->fd
);
168 ret
= send_cred_buffer(at
->fd
, args
);
173 at
->btrn
= btr_new_node(&(struct btr_node_description
)
174 EMBRACE(.name
= "audioc line handler"));
176 register_task(&sched
, &at
->task
);
177 i9e_attach_to_stdout(at
->btrn
);
186 __noreturn
static void interactive_session(void)
190 struct sigaction act
;
191 struct i9e_client_info ici
= {
193 .prompt
= "para_audioc> ",
194 .line_handler
= audioc_i9e_line_handler
,
195 .loglevel
= loglevel
,
196 .completers
= audiod_completers
,
198 PARA_NOTICE_LOG("\n%s\n", version_text("audioc"));
199 if (conf
.history_file_given
)
200 history_file
= para_strdup(conf
.history_file_arg
);
202 char *home
= para_homedir();
203 history_file
= make_message("%s/.paraslash/audioc.history",
207 ici
.history_file
= history_file
;
209 act
.sa_handler
= i9e_signal_dispatch
;
210 sigemptyset(&act
.sa_mask
);
212 sigaction(SIGINT
, &act
, NULL
);
213 sched
.select_function
= i9e_select
;
215 sched
.default_timeout
.tv_sec
= 1;
216 ret
= i9e_open(&ici
, &sched
);
220 ret
= schedule(&sched
);
222 para_log
= stderr_log
;
225 audioc_cmdline_parser_free(&conf
);
227 PARA_ERROR_LOG("%s\n", para_strerror(-ret
));
228 exit(ret
< 0? EXIT_FAILURE
: EXIT_SUCCESS
);
231 __noreturn
static void print_completions(void)
233 int ret
= i9e_print_completions(audiod_completers
);
234 exit(ret
<= 0? EXIT_FAILURE
: EXIT_SUCCESS
);
237 #else /* HAVE_READLINE */
239 __noreturn
static void interactive_session(void)
241 PARA_EMERG_LOG("interactive sessions not available\n");
245 __noreturn
static void print_completions(void)
247 PARA_EMERG_LOG("command completion not available\n");
251 #endif /* HAVE_READLINE */
253 static char *configfile_exists(void)
257 char *home
= para_homedir();
259 config_file
= make_message("%s/.paraslash/audioc.conf", home
);
261 if (!stat(config_file
, &statbuf
))
267 __noreturn
static void print_help_and_die(void)
269 struct ggo_help h
= DEFINE_GGO_HELP(audioc
);
270 bool d
= conf
.detailed_help_given
;
272 ggo_print_help(&h
, d
? GPH_STANDARD_FLAGS_DETAILED
: GPH_STANDARD_FLAGS
);
277 * The client program to connect to para_audiod.
279 * \param argc Usual argument count.
280 * \param argv Usual argument vector.
282 * It connects to the "well-known" local socket to communicate with
283 * para_audiod. Authentication is performed by sending a ucred buffer
284 * containing the user id to the local socket.
286 * Any data received from the socket is written to stdout.
288 * \return EXIT_SUCCESS or EXIT_FAILURE.
290 * \sa send_cred_buffer(), para_audioc(1), para_audiod(1).
292 int main(int argc
, char *argv
[])
295 char *cf
, *buf
= NULL
, *args
= NULL
;
298 audioc_cmdline_parser(argc
, argv
, &conf
);
299 loglevel
= get_loglevel_by_name(conf
.loglevel_arg
);
300 version_handle_flag("audioc", conf
.version_given
);
301 if (conf
.help_given
|| conf
.detailed_help_given
)
302 print_help_and_die();
303 cf
= configfile_exists();
305 struct audioc_cmdline_parser_params params
= {
309 .check_ambiguity
= 0,
313 audioc_cmdline_parser_config_file(cf
, &conf
, ¶ms
);
315 loglevel
= get_loglevel_by_name(conf
.loglevel_arg
);
317 if (conf
.socket_given
)
318 socket_name
= para_strdup(conf
.socket_arg
);
320 char *hn
= para_hostname();
321 socket_name
= make_message("/var/paraslash/audiod_socket.%s",
326 if (conf
.complete_given
)
329 if (conf
.inputs_num
== 0)
330 interactive_session();
331 args
= concat_args(conf
.inputs_num
, conf
.inputs
);
333 ret
= connect_local_socket(socket_name
);
336 PARA_EMERG_LOG("failed to connect to local socket\n");
340 ret
= send_cred_buffer(fd
, args
);
343 bufsize
= conf
.bufsize_arg
;
344 buf
= para_malloc(bufsize
);
345 ret
= mark_fd_blocking(STDOUT_FILENO
);
349 size_t n
= ret
= recv_bin_buffer(fd
, buf
, bufsize
);
352 ret
= write_all(STDOUT_FILENO
, buf
, n
);
358 PARA_ERROR_LOG("%s\n", para_strerror(-ret
));
359 return ret
< 0? EXIT_FAILURE
: EXIT_SUCCESS
;