2 * Copyright (C) 2005-2009 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"
19 #include "grab_client.cmdline.h"
20 #include "grab_client.h"
28 #include "audiod_command_list.h"
30 extern char *stat_item_values
[NUM_STAT_ITEMS
];
33 /** iterate over the array of all audiod commands */
34 #define FOR_EACH_COMMAND(c) for (c = 0; audiod_cmds[c].name; c++)
36 static int client_write(int fd
, const char *buf
)
38 size_t len
= strlen(buf
);
39 return write(fd
, buf
, len
) != len
? -E_CLIENT_WRITE
: 1;
42 __malloc
static char *audiod_status_string(void)
44 const char *status
= (audiod_status
== AUDIOD_ON
)?
45 "on" : (audiod_status
== AUDIOD_OFF
)? "off": "sb";
46 return make_message("%s: %s\n", status_item_list
[SI_AUDIOD_STATUS
], status
);
49 static int get_play_time_slot_num(void)
54 struct slot_info
*s
= &slot
[i
];
57 if (oldest
>= 0 && tv_diff(&s
->wstime
, &slot
[oldest
].wstime
,
65 __malloc
static char *decoder_flags(void)
68 char flags
[MAX_STREAM_SLOTS
+ 1];
71 struct slot_info
*s
= &slot
[i
];
79 flags
[MAX_STREAM_SLOTS
] = '\0';
80 return make_message("%s: %s\n", status_item_list
[SI_DECODER_FLAGS
],
84 static int dump_commands(int fd
)
86 char *buf
= para_strdup(""), *tmp
= NULL
;
91 tmp
= make_message("%s%s\t%s\n", buf
, audiod_cmds
[i
].name
,
92 audiod_cmds
[i
].description
);
96 ret
= client_write(fd
, buf
);
102 * command handlers don't close their fd on errors (ret < 0) so that
103 * its caller can send an error message. Otherwise (ret >= 0) it's up
104 * to each individual command to close the fd if necessary.
107 int com_help(int fd
, int argc
, char **argv
)
111 const char *dflt
= "No such command. Available commands:\n";
114 ret
= dump_commands(fd
);
117 FOR_EACH_COMMAND(i
) {
118 if (strcmp(audiod_cmds
[i
].name
, argv
[1]))
122 "SYNOPSIS\n\tpara_audioc %s\n"
125 audiod_cmds
[i
].description
,
126 audiod_cmds
[i
].usage
,
129 ret
= client_write(fd
, buf
);
133 ret
= client_write(fd
, dflt
);
135 ret
= dump_commands(fd
);
142 int com_tasks(int fd
, __a_unused
int argc
, __a_unused
char **argv
)
144 char *tl
= get_task_list();
147 ret
= client_write(fd
, tl
);
154 int com_kill(int fd
, int argc
, char **argv
)
158 return -E_AUDIOD_SYNTAX
;
159 for (i
= 1; i
< argc
; i
++) {
160 ret
= kill_task(argv
[i
]);
169 int com_stat(int fd
, __a_unused
int argc
, __a_unused
char **argv
)
173 long unsigned mask
= ~0LU;
177 for (i
= 1; i
< argc
; i
++) {
178 ret
= stat_item_valid(argv
[i
]);
184 PARA_INFO_LOG("mask: 0x%lx\n", mask
);
185 if (mask
& (1 << SI_PLAY_TIME
)) {
186 int slot_num
= get_play_time_slot_num();
187 char *ts
= get_time_string(slot_num
);
189 ret
= client_write(fd
, ts
);
195 if (mask
& (1 << SI_AUDIOD_UPTIME
)) {
196 char *tmp
, *us
= uptime_str();
197 tmp
= make_message("%s: %s\n",
198 status_item_list
[SI_AUDIOD_UPTIME
], us
);
200 ret
= client_write(fd
, tmp
);
205 if (mask
& (1 << SI_AUDIOD_STATUS
)) {
206 char *s
= audiod_status_string();
207 ret
= client_write(fd
, s
);
212 if (mask
& (1 << SI_DECODER_FLAGS
)) {
213 char *df
= decoder_flags();
214 ret
= client_write(fd
, df
);
219 FOR_EACH_STATUS_ITEM(i
) {
221 if (!((1 << i
) & mask
))
223 v
= stat_item_values
[i
];
224 tmp
= make_message("%s%s%s", buf
? buf
: "",
225 v
? v
: "", v
? "\n" : "");
229 ret
= client_write(fd
, buf
);
232 ret
= stat_client_add(fd
, mask
);
237 static struct filter_node
*find_filter_node(int slot_num
, int format
, int filternum
)
242 struct slot_info
*s
= &slot
[i
];
243 if (s
->format
< 0 || !s
->fc
)
245 if (slot_num
>= 0 && slot_num
!= i
)
247 if (format
>= 0 && s
->format
!= format
)
249 if (num_filters(i
) <= filternum
)
252 return s
->fc
->filter_nodes
+ filternum
;
257 int com_grab(int fd
, char *cmdline
)
259 struct grab_client
*gc
;
260 struct filter_node
*fn
;
264 gc
= grab_client_new(fd
, cmdline
, &err
);
267 fn
= find_filter_node(gc
->conf
->slot_arg
, gc
->audio_format_num
, gc
->conf
->filter_num_arg
);
269 activate_grab_client(gc
, fn
);
272 if (err
!= -E_GC_HELP_GIVEN
&& err
!= -E_GC_VERSION_GIVEN
)
274 if (err
== -E_GC_HELP_GIVEN
) {
275 msg
= make_message("%s\n\n", grab_client_args_info_usage
);
276 for (i
= 0; grab_client_args_info_help
[i
]; i
++) {
277 char *tmp
= make_message("%s%s\n", msg
,
278 grab_client_args_info_help
[i
]);
283 msg
= make_message("%s %s\n",
284 GRAB_CLIENT_CMDLINE_PARSER_PACKAGE
,
285 GRAB_CLIENT_CMDLINE_PARSER_VERSION
);
286 err
= client_write(fd
, msg
);
294 __noreturn
int com_term(int fd
, __a_unused
int argc
, __a_unused
char **argv
)
297 clean_exit(EXIT_SUCCESS
, "terminating on user request");
300 int com_on(int fd
, __a_unused
int argc
, __a_unused
char **argv
)
302 audiod_status
= AUDIOD_ON
;
307 int com_off(int fd
, __a_unused
int argc
, __a_unused
char **argv
)
309 audiod_status
= AUDIOD_OFF
;
314 int com_sb(int fd
, __a_unused
int argc
, __a_unused
char **argv
)
316 audiod_status
= AUDIOD_STANDBY
;
321 int com_cycle(int fd
, int argc
, char **argv
)
323 switch (audiod_status
) {
325 return com_sb(fd
, argc
, argv
);
328 return com_on(fd
, argc
, argv
);
331 return com_off(fd
, argc
, argv
);
338 static int check_perms(uid_t uid
)
342 if (!conf
.user_allow_given
)
344 for (i
= 0; i
< conf
.user_allow_given
; i
++)
345 if (uid
== conf
.user_allow_arg
[i
])
347 return -E_UCRED_PERM
;
351 * handle arriving connections on the local socket
353 * \param accept_fd the fd to call accept() on
355 * This is called whenever para_audiod's main task detects an incoming
356 * connection by the readability of \a accept_fd. This function reads the
357 * command sent by the peer, checks the connecting user's permissions by using
358 * unix socket credentials (if supported by the OS) and calls the corresponding
359 * command handler if permissions are OK.
361 * \return positive on success, negative on errors
363 * \sa para_accept(), recv_cred_buffer()
365 int handle_connect(int accept_fd
)
367 int i
, argc
, ret
, clifd
= -1;
368 char *cmd
= NULL
, *p
, *buf
= para_calloc(MAXLINE
), **argv
= NULL
;
369 struct sockaddr_un unix_addr
;
372 ret
= para_accept(accept_fd
, &unix_addr
, sizeof(struct sockaddr_un
));
376 ret
= recv_cred_buffer(clifd
, buf
, MAXLINE
- 1);
380 PARA_INFO_LOG("connection from user %i, buf: %s\n", ret
, buf
);
381 ret
= check_perms(uid
);
384 cmd
= para_strdup(buf
);
385 p
= strchr(cmd
, '\n');
392 for (i
= 0; audiod_cmds
[i
].name
; i
++) {
394 if (strcmp(audiod_cmds
[i
].name
, cmd
))
396 if (audiod_cmds
[i
].handler
) {
397 argc
= split_args(buf
, &argv
, "\n");
398 PARA_INFO_LOG("argv[0]: %s, argc= %d\n", argv
[0], argc
);
399 ret
= audiod_cmds
[i
].handler(clifd
, argc
, argv
);
402 for (j
= 0; p
[j
]; j
++)
405 PARA_INFO_LOG("cmd: %s, options: %s\n", cmd
, p
);
406 ret
= audiod_cmds
[i
].line_handler(clifd
, p
);
409 ret
= -E_INVALID_AUDIOD_CMD
;
414 if (clifd
> 0 && ret
< 0 && ret
!= -E_CLIENT_WRITE
) {
415 char *tmp
= make_message("%s\n", para_strerror(-ret
));
416 client_write(clifd
, tmp
);
423 * send the current audiod status to all connected stat clients
425 void audiod_status_dump(void)
427 int slot_num
= get_play_time_slot_num();
428 char *old
, *new, *tmp
;
430 old
= stat_item_values
[SI_PLAY_TIME
];
431 new = get_time_string(slot_num
);
433 if (!old
|| strcmp(old
, new)) {
435 stat_client_write(new, SI_PLAY_TIME
);
436 stat_item_values
[SI_PLAY_TIME
] = new;
442 old
= stat_item_values
[SI_AUDIOD_UPTIME
];
443 if (!old
|| strcmp(old
, new)) {
445 tmp
= make_message("%s: %s\n",
446 status_item_list
[SI_AUDIOD_UPTIME
], new);
447 stat_client_write(tmp
, SI_AUDIOD_UPTIME
);
449 stat_item_values
[SI_AUDIOD_UPTIME
] = new;
453 old
= stat_item_values
[SI_AUDIOD_STATUS
];
454 new = audiod_status_string();
455 if (!old
|| strcmp(old
, new)) {
457 stat_client_write(new, SI_AUDIOD_STATUS
);
458 stat_item_values
[SI_AUDIOD_STATUS
] = new;
462 old
= stat_item_values
[SI_DECODER_FLAGS
];
463 new = decoder_flags();
464 if (!old
|| strcmp(old
, new)) {
466 stat_client_write(new, SI_DECODER_FLAGS
);
467 stat_item_values
[SI_DECODER_FLAGS
] = new;
473 * send empty status list
475 * Send to each connected client the full status item list
478 void dump_empty_status(void)
482 FOR_EACH_STATUS_ITEM(i
) {
483 char *tmp
= make_message("%s:\n", status_item_list
[i
]);
484 stat_client_write(tmp
, i
);
486 free(stat_item_values
[i
]);
487 stat_item_values
[i
] = NULL
;