2 * Copyright (C) 2005-2007 Andre Noll <maan@systemlinux.org>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file audiod_command.c commands for para_audiod */
11 #include "audiod.cmdline.h"
13 #include "close_on_fork.h"
16 #include "grab_client.cmdline.h"
17 #include "grab_client.h"
25 #include "audiod_command_list.h"
27 /** iterate over the array of all audiod commands */
28 #define FOR_EACH_COMMAND(c) for (c = 0; audiod_cmds[c].name; c++)
30 static int client_write(int fd, const char *buf)
32 size_t len = strlen(buf);
33 return write(fd, buf, len) != len? -E_CLIENT_WRITE: 1;
36 static char *get_time_string(struct timeval *newest_stime)
38 struct timeval diff, adj_stream_start, tmp;
39 int total = 0, use_server_time = 1,
40 length_seconds = stat_task->length_seconds;
42 if (!stat_task->playing) {
45 return make_message("%s:\n", status_item_list[SI_PLAY_TIME]);
47 if (audiod_status == AUDIOD_OFF)
49 if (stat_task->sa_time_diff_sign > 0)
50 tv_diff(&stat_task->server_stream_start, &stat_task->sa_time_diff,
53 tv_add(&stat_task->server_stream_start, &stat_task->sa_time_diff,
55 tmp = adj_stream_start;
56 if (newest_stime && audiod_status == AUDIOD_ON) {
57 tv_diff(newest_stime, &adj_stream_start, &diff);
58 if (tv2ms(&diff) < 5000) {
63 tv_diff(now, &tmp, &diff);
64 total = diff.tv_sec + stat_task->offset_seconds;
65 if (total > length_seconds)
66 total = length_seconds;
71 "%s:%s%d:%02d [%d:%02d] (%d%%/%d:%02d)\n",
72 status_item_list[SI_PLAY_TIME],
73 use_server_time? "~" : "",
76 (length_seconds - total) / 60,
77 (length_seconds - total) % 60,
78 length_seconds? (total * 100 + length_seconds / 2) /
85 __malloc static char *audiod_status_string(void)
87 const char *status = (audiod_status == AUDIOD_ON)?
88 "on" : (audiod_status == AUDIOD_OFF)? "off": "sb";
89 return make_message("%s:%s\n", status_item_list[SI_AUDIOD_STATUS], status);
92 static struct timeval *wstime(void)
95 struct timeval *max = NULL;
97 struct slot_info *s = &slot[i];
100 if (max && tv_diff(&s->wstime, max, NULL) <= 0)
106 __malloc static char *decoder_flags(void)
109 char flags[MAX_STREAM_SLOTS + 1];
112 struct slot_info *s = &slot[i];
114 if (s->receiver_node)
120 flags[MAX_STREAM_SLOTS] = '\0';
121 return make_message("%s:%s\n", status_item_list[SI_DECODER_FLAGS],
125 static int dump_commands(int fd)
127 char *buf = para_strdup(""), *tmp = NULL;
131 FOR_EACH_COMMAND(i) {
132 tmp = make_message("%s%s\t%s\n", buf, audiod_cmds[i].name,
133 audiod_cmds[i].description);
137 ret = client_write(fd, buf);
143 * command handlers don't close their fd on errors (ret < 0) so that
144 * its caller can send an error message. Otherwise (ret >= 0) it's up
145 * to each individual command to close the fd if necessary.
148 int com_help(int fd, int argc, char **argv)
152 const char *dflt = "No such command. Available commands:\n";
155 ret = dump_commands(fd);
158 FOR_EACH_COMMAND(i) {
159 if (strcmp(audiod_cmds[i].name, argv[1]))
163 "SYNOPSIS\n\tpara_audioc %s\n"
166 audiod_cmds[i].description,
167 audiod_cmds[i].usage,
170 ret = client_write(fd, buf);
174 ret = client_write(fd, dflt);
176 ret = dump_commands(fd);
183 int com_tasks(int fd, __a_unused int argc, __a_unused char **argv)
185 char *tl = get_task_list();
188 ret = client_write(fd, tl);
195 int com_kill(int fd, int argc, char **argv)
199 return -E_AUDIOD_SYNTAX;
200 for (i = 1; i < argc; i++) {
201 ret = kill_task(argv[i]);
210 int com_stat(int fd, __a_unused int argc, __a_unused char **argv)
214 long unsigned mask = ~0LU;
218 for (i = 1; i < argc; i++) {
219 ret = stat_item_valid(argv[i]);
225 PARA_INFO_LOG("mask: 0x%lx\n", mask);
226 if (mask & (1 << SI_PLAY_TIME)) {
227 struct timeval *t = wstime();
228 char *ts = get_time_string(t);
230 ret = client_write(fd, ts);
236 if (mask & (1 << SI_AUDIOD_UPTIME)) {
237 char *tmp, *us = uptime_str();
238 tmp = make_message("%s:%s\n",
239 status_item_list[SI_AUDIOD_UPTIME], us);
241 ret = client_write(fd, tmp);
246 if (mask & (1 << SI_AUDIOD_STATUS)) {
247 char *s = audiod_status_string();
248 ret = client_write(fd, s);
253 if (mask & (1 << SI_DECODER_FLAGS)) {
254 char *df =decoder_flags();
255 ret = client_write(fd, df);
261 for (i = 0; i < NUM_STAT_ITEMS; i++) {
263 if (!((1 << i) & mask))
265 v = stat_task->stat_item_values[i];
266 tmp = make_message("%s%s%s", buf? buf: "",
267 v? v : "", v? "\n" : "");
271 ret = client_write(fd, buf);
274 ret = stat_client_add(fd, mask);
279 static struct filter_node *find_filter_node(int slot_num, int format, int filternum)
281 struct filter_node *fn;
285 struct slot_info *s = &slot[i];
286 if (s->format < 0 || !s->fc)
288 if (slot_num >= 0 && slot_num != i)
290 if (format >= 0 && s->format != format)
292 if (num_filters(i) < filternum)
296 list_for_each_entry(fn, &s->fc->filters, node)
297 if (filternum <= 0 || j++ == filternum)
304 int com_grab(int fd, char *cmdline)
306 struct grab_client *gc;
307 struct filter_node *fn;
311 gc = grab_client_new(fd, cmdline, &err);
314 fn = find_filter_node(gc->conf->slot_arg, gc->audio_format_num, gc->conf->filter_num_arg);
316 activate_grab_client(gc, fn);
319 if (err != -E_GC_HELP_GIVEN && err != -E_GC_VERSION_GIVEN)
321 if (err == -E_GC_HELP_GIVEN) {
322 msg = make_message("%s\n\n", grab_client_args_info_usage);
323 for (i = 0; grab_client_args_info_help[i]; i++) {
324 char *tmp = make_message("%s%s\n", msg,
325 grab_client_args_info_help[i]);
330 msg = make_message("%s %s\n",
331 GRAB_CLIENT_CMDLINE_PARSER_PACKAGE,
332 GRAB_CLIENT_CMDLINE_PARSER_VERSION);
333 err = client_write(fd, msg);
341 __noreturn int com_term(int fd, __a_unused int argc, __a_unused char **argv)
344 clean_exit(EXIT_SUCCESS, "terminating on user request");
347 int com_on(int fd, __a_unused int argc, __a_unused char **argv)
349 audiod_status = AUDIOD_ON;
354 int com_off(int fd, __a_unused int argc, __a_unused char **argv)
356 audiod_status = AUDIOD_OFF;
361 int com_sb(int fd, __a_unused int argc, __a_unused char **argv)
363 audiod_status = AUDIOD_STANDBY;
368 int com_cycle(int fd, int argc, char **argv)
370 switch (audiod_status) {
372 return com_sb(fd, argc, argv);
375 return com_on(fd, argc, argv);
378 return com_off(fd, argc, argv);
385 static int check_perms(uid_t uid)
389 if (!conf.user_allow_given)
391 for (i = 0; i < conf.user_allow_given; i++)
392 if (uid == conf.user_allow_arg[i])
394 return -E_UCRED_PERM;
398 * handle arriving connections on the local socket
400 * \param accept_fd the fd to call accept() on
402 * This is called whenever para_audiod's main task detects an incoming
403 * connection by the readability of \a accept_fd. This function reads the
404 * command sent by the peer, checks the connecting user's permissions by using
405 * unix socket credentials (if supported by the OS) and calls the corresponding
406 * command handler if permissions are OK.
408 * \return positive on success, negative on errors
410 * \sa para_accept(), recv_cred_buffer()
412 int handle_connect(int accept_fd)
414 int i, argc, ret, clifd = -1;
415 char *cmd = NULL, *p, *buf = para_calloc(MAXLINE), **argv = NULL;
416 struct sockaddr_un unix_addr;
419 ret = para_accept(accept_fd, &unix_addr, sizeof(struct sockaddr_un));
423 ret = recv_cred_buffer(clifd, buf, MAXLINE - 1);
427 PARA_INFO_LOG("connection from user %i, buf: %s\n", ret, buf);
428 ret = check_perms(uid);
431 ret = -E_INVALID_AUDIOD_CMD;
432 cmd = para_strdup(buf);
433 p = strchr(cmd, '\n');
440 for (i = 0; audiod_cmds[i].name; i++) {
442 if (strcmp(audiod_cmds[i].name, cmd))
444 if (audiod_cmds[i].handler) {
445 argc = split_args(buf, &argv, "\n");
446 PARA_INFO_LOG("argv[0]: %s, argc= %d\n", argv[0], argc);
447 ret = audiod_cmds[i].handler(clifd, argc, argv);
450 for (j = 0; p[j]; j++)
453 PARA_INFO_LOG("cmd: %s, options: %s\n", cmd, p);
454 ret = audiod_cmds[i].line_handler(clifd, p);
457 ret = -E_INVALID_AUDIOD_CMD;
462 if (clifd > 0 && ret < 0 && ret != -E_CLIENT_WRITE) {
463 char *tmp = make_message("%s\n", PARA_STRERROR(-ret));
464 client_write(clifd, tmp);
471 * send the current audiod status to all connected stat clients
473 void audiod_status_dump(void)
475 struct timeval *t = wstime();
476 char *old, *new, *tmp;
478 old = stat_task->stat_item_values[SI_PLAY_TIME];
479 new = get_time_string(t);
481 if (!old || strcmp(old, new)) {
483 stat_client_write(new, SI_PLAY_TIME);
484 stat_task->stat_item_values[SI_PLAY_TIME] = new;
490 old = stat_task->stat_item_values[SI_AUDIOD_UPTIME];
491 if (!old || strcmp(old, new)) {
493 tmp = make_message("%s:%s\n",
494 status_item_list[SI_AUDIOD_UPTIME], new);
495 stat_client_write(tmp, SI_AUDIOD_UPTIME);
497 stat_task->stat_item_values[SI_AUDIOD_UPTIME] = new;
501 old = stat_task->stat_item_values[SI_AUDIOD_STATUS];
502 new = audiod_status_string();
503 if (!old || strcmp(old, new)) {
505 stat_client_write(new, SI_AUDIOD_STATUS);
506 stat_task->stat_item_values[SI_AUDIOD_STATUS] = new;
510 old = stat_task->stat_item_values[SI_DECODER_FLAGS];
511 new = decoder_flags();
512 if (!old || strcmp(old, new)) {
514 stat_client_write(new, SI_DECODER_FLAGS);
515 stat_task->stat_item_values[SI_DECODER_FLAGS] = new;
521 * send empty status list
523 * Send to each connected client the full status item list
526 void dump_empty_status(void)
530 FOR_EACH_STAT_ITEM(i) {
531 char *tmp = make_message("%s:\n", status_item_list[i]);
532 stat_client_write(tmp, i);
534 free(stat_task->stat_item_values[i]);
535 stat_task->stat_item_values[i] = NULL;