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 */
13 #include "audiod.cmdline.h"
15 #include "close_on_fork.h"
18 #include "grab_client.cmdline.h"
19 #include "grab_client.h"
27 #include "audiod_command_list.h"
29 /** iterate over the array of all audiod commands */
30 #define FOR_EACH_COMMAND(c) for (c = 0; audiod_cmds[c].name; c++)
32 static int client_write(int fd, const char *buf)
34 size_t len = strlen(buf);
35 return write(fd, buf, len) != len? -E_CLIENT_WRITE: 1;
38 static char *get_time_string(struct timeval *newest_stime)
40 struct timeval diff, adj_stream_start, tmp;
41 int total = 0, use_server_time = 1,
42 length_seconds = stat_task->length_seconds;
44 if (!stat_task->playing) {
47 return make_message("%s:\n", status_item_list[SI_PLAY_TIME]);
49 if (audiod_status == AUDIOD_OFF)
51 if (stat_task->sa_time_diff_sign > 0)
52 tv_diff(&stat_task->server_stream_start, &stat_task->sa_time_diff,
55 tv_add(&stat_task->server_stream_start, &stat_task->sa_time_diff,
57 tmp = adj_stream_start;
58 if (newest_stime && audiod_status == AUDIOD_ON) {
59 tv_diff(newest_stime, &adj_stream_start, &diff);
60 if (tv2ms(&diff) < 5000) {
65 tv_diff(now, &tmp, &diff);
66 total = diff.tv_sec + stat_task->offset_seconds;
67 if (total > length_seconds)
68 total = length_seconds;
73 "%s: %s%d:%02d [%d:%02d] (%d%%/%d:%02d)\n",
74 status_item_list[SI_PLAY_TIME],
75 use_server_time? "~" : "",
78 (length_seconds - total) / 60,
79 (length_seconds - total) % 60,
80 length_seconds? (total * 100 + length_seconds / 2) /
87 __malloc static char *audiod_status_string(void)
89 const char *status = (audiod_status == AUDIOD_ON)?
90 "on" : (audiod_status == AUDIOD_OFF)? "off": "sb";
91 return make_message("%s: %s\n", status_item_list[SI_AUDIOD_STATUS], status);
94 static struct timeval *wstime(void)
97 struct timeval *max = NULL;
99 struct slot_info *s = &slot[i];
102 if (max && tv_diff(&s->wstime, max, NULL) <= 0)
108 __malloc static char *decoder_flags(void)
111 char flags[MAX_STREAM_SLOTS + 1];
114 struct slot_info *s = &slot[i];
116 if (s->receiver_node)
122 flags[MAX_STREAM_SLOTS] = '\0';
123 return make_message("%s: %s\n", status_item_list[SI_DECODER_FLAGS],
127 static int dump_commands(int fd)
129 char *buf = para_strdup(""), *tmp = NULL;
133 FOR_EACH_COMMAND(i) {
134 tmp = make_message("%s%s\t%s\n", buf, audiod_cmds[i].name,
135 audiod_cmds[i].description);
139 ret = client_write(fd, buf);
145 * command handlers don't close their fd on errors (ret < 0) so that
146 * its caller can send an error message. Otherwise (ret >= 0) it's up
147 * to each individual command to close the fd if necessary.
150 int com_help(int fd, int argc, char **argv)
154 const char *dflt = "No such command. Available commands:\n";
157 ret = dump_commands(fd);
160 FOR_EACH_COMMAND(i) {
161 if (strcmp(audiod_cmds[i].name, argv[1]))
165 "SYNOPSIS\n\tpara_audioc %s\n"
168 audiod_cmds[i].description,
169 audiod_cmds[i].usage,
172 ret = client_write(fd, buf);
176 ret = client_write(fd, dflt);
178 ret = dump_commands(fd);
185 int com_tasks(int fd, __a_unused int argc, __a_unused char **argv)
187 char *tl = get_task_list();
190 ret = client_write(fd, tl);
197 int com_kill(int fd, int argc, char **argv)
201 return -E_AUDIOD_SYNTAX;
202 for (i = 1; i < argc; i++) {
203 ret = kill_task(argv[i]);
212 int com_stat(int fd, __a_unused int argc, __a_unused char **argv)
216 long unsigned mask = ~0LU;
220 for (i = 1; i < argc; i++) {
221 ret = stat_item_valid(argv[i]);
227 PARA_INFO_LOG("mask: 0x%lx\n", mask);
228 if (mask & (1 << SI_PLAY_TIME)) {
229 struct timeval *t = wstime();
230 char *ts = get_time_string(t);
232 ret = client_write(fd, ts);
238 if (mask & (1 << SI_AUDIOD_UPTIME)) {
239 char *tmp, *us = uptime_str();
240 tmp = make_message("%s: %s\n",
241 status_item_list[SI_AUDIOD_UPTIME], us);
243 ret = client_write(fd, tmp);
248 if (mask & (1 << SI_AUDIOD_STATUS)) {
249 char *s = audiod_status_string();
250 ret = client_write(fd, s);
255 if (mask & (1 << SI_DECODER_FLAGS)) {
256 char *df = decoder_flags();
257 ret = client_write(fd, df);
263 for (i = 0; i < NUM_STAT_ITEMS; i++) {
265 if (!((1 << i) & mask))
267 v = stat_task->stat_item_values[i];
268 tmp = make_message("%s%s%s", buf? buf: "",
269 v? v : "", v? "\n" : "");
273 ret = client_write(fd, buf);
276 ret = stat_client_add(fd, mask);
281 static struct filter_node *find_filter_node(int slot_num, int format, int filternum)
283 struct filter_node *fn;
287 struct slot_info *s = &slot[i];
288 if (s->format < 0 || !s->fc)
290 if (slot_num >= 0 && slot_num != i)
292 if (format >= 0 && s->format != format)
294 if (num_filters(i) < filternum)
298 list_for_each_entry(fn, &s->fc->filters, node)
299 if (filternum <= 0 || j++ == filternum)
306 int com_grab(int fd, char *cmdline)
308 struct grab_client *gc;
309 struct filter_node *fn;
313 gc = grab_client_new(fd, cmdline, &err);
316 fn = find_filter_node(gc->conf->slot_arg, gc->audio_format_num, gc->conf->filter_num_arg);
318 activate_grab_client(gc, fn);
321 if (err != -E_GC_HELP_GIVEN && err != -E_GC_VERSION_GIVEN)
323 if (err == -E_GC_HELP_GIVEN) {
324 msg = make_message("%s\n\n", grab_client_args_info_usage);
325 for (i = 0; grab_client_args_info_help[i]; i++) {
326 char *tmp = make_message("%s%s\n", msg,
327 grab_client_args_info_help[i]);
332 msg = make_message("%s %s\n",
333 GRAB_CLIENT_CMDLINE_PARSER_PACKAGE,
334 GRAB_CLIENT_CMDLINE_PARSER_VERSION);
335 err = client_write(fd, msg);
343 __noreturn int com_term(int fd, __a_unused int argc, __a_unused char **argv)
346 clean_exit(EXIT_SUCCESS, "terminating on user request");
349 int com_on(int fd, __a_unused int argc, __a_unused char **argv)
351 audiod_status = AUDIOD_ON;
356 int com_off(int fd, __a_unused int argc, __a_unused char **argv)
358 audiod_status = AUDIOD_OFF;
363 int com_sb(int fd, __a_unused int argc, __a_unused char **argv)
365 audiod_status = AUDIOD_STANDBY;
370 int com_cycle(int fd, int argc, char **argv)
372 switch (audiod_status) {
374 return com_sb(fd, argc, argv);
377 return com_on(fd, argc, argv);
380 return com_off(fd, argc, argv);
387 static int check_perms(uid_t uid)
391 if (!conf.user_allow_given)
393 for (i = 0; i < conf.user_allow_given; i++)
394 if (uid == conf.user_allow_arg[i])
396 return -E_UCRED_PERM;
400 * handle arriving connections on the local socket
402 * \param accept_fd the fd to call accept() on
404 * This is called whenever para_audiod's main task detects an incoming
405 * connection by the readability of \a accept_fd. This function reads the
406 * command sent by the peer, checks the connecting user's permissions by using
407 * unix socket credentials (if supported by the OS) and calls the corresponding
408 * command handler if permissions are OK.
410 * \return positive on success, negative on errors
412 * \sa para_accept(), recv_cred_buffer()
414 int handle_connect(int accept_fd)
416 int i, argc, ret, clifd = -1;
417 char *cmd = NULL, *p, *buf = para_calloc(MAXLINE), **argv = NULL;
418 struct sockaddr_un unix_addr;
421 ret = para_accept(accept_fd, &unix_addr, sizeof(struct sockaddr_un));
425 ret = recv_cred_buffer(clifd, buf, MAXLINE - 1);
429 PARA_INFO_LOG("connection from user %i, buf: %s\n", ret, buf);
430 ret = check_perms(uid);
433 ret = -E_INVALID_AUDIOD_CMD;
434 cmd = para_strdup(buf);
435 p = strchr(cmd, '\n');
442 for (i = 0; audiod_cmds[i].name; i++) {
444 if (strcmp(audiod_cmds[i].name, cmd))
446 if (audiod_cmds[i].handler) {
447 argc = split_args(buf, &argv, "\n");
448 PARA_INFO_LOG("argv[0]: %s, argc= %d\n", argv[0], argc);
449 ret = audiod_cmds[i].handler(clifd, argc, argv);
452 for (j = 0; p[j]; j++)
455 PARA_INFO_LOG("cmd: %s, options: %s\n", cmd, p);
456 ret = audiod_cmds[i].line_handler(clifd, p);
459 ret = -E_INVALID_AUDIOD_CMD;
464 if (clifd > 0 && ret < 0 && ret != -E_CLIENT_WRITE) {
465 char *tmp = make_message("%s\n", PARA_STRERROR(-ret));
466 client_write(clifd, tmp);
473 * send the current audiod status to all connected stat clients
475 void audiod_status_dump(void)
477 struct timeval *t = wstime();
478 char *old, *new, *tmp;
480 old = stat_task->stat_item_values[SI_PLAY_TIME];
481 new = get_time_string(t);
483 if (!old || strcmp(old, new)) {
485 stat_client_write(new, SI_PLAY_TIME);
486 stat_task->stat_item_values[SI_PLAY_TIME] = new;
492 old = stat_task->stat_item_values[SI_AUDIOD_UPTIME];
493 if (!old || strcmp(old, new)) {
495 tmp = make_message("%s: %s\n",
496 status_item_list[SI_AUDIOD_UPTIME], new);
497 stat_client_write(tmp, SI_AUDIOD_UPTIME);
499 stat_task->stat_item_values[SI_AUDIOD_UPTIME] = new;
503 old = stat_task->stat_item_values[SI_AUDIOD_STATUS];
504 new = audiod_status_string();
505 if (!old || strcmp(old, new)) {
507 stat_client_write(new, SI_AUDIOD_STATUS);
508 stat_task->stat_item_values[SI_AUDIOD_STATUS] = new;
512 old = stat_task->stat_item_values[SI_DECODER_FLAGS];
513 new = decoder_flags();
514 if (!old || strcmp(old, new)) {
516 stat_client_write(new, SI_DECODER_FLAGS);
517 stat_task->stat_item_values[SI_DECODER_FLAGS] = new;
523 * send empty status list
525 * Send to each connected client the full status item list
528 void dump_empty_status(void)
532 FOR_EACH_STAT_ITEM(i) {
533 char *tmp = make_message("%s:\n", status_item_list[i]);
534 stat_client_write(tmp, i);
536 free(stat_task->stat_item_values[i]);
537 stat_task->stat_item_values[i] = NULL;