admin.c 21.1 KB
Newer Older
1
2
#include <string.h>
#include <stdlib.h>
3
4
#include <stdarg.h>
#include <time.h>
5
6
7
#include <libxml/xmlmemory.h>
#include <libxml/parser.h>
#include <libxml/tree.h>
8
9
10
11
12
13
14
15
16

#include "config.h"
#include "connection.h"
#include "refbuf.h"
#include "client.h"
#include "source.h"
#include "global.h"
#include "event.h"
#include "stats.h"
17
#include "os.h"
18
19
20
21
22

#include "format.h"
#include "format_mp3.h"

#include "logging.h"
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
23
24
25
#ifdef _WIN32
#define snprintf _snprintf
#endif
26
27
28

#define CATMODULE "admin"

29
30
31
#define COMMAND_ERROR             (-1)

/* Mount-specific commands */
32
#define COMMAND_RAW_FALLBACK        1
33
#define COMMAND_METADATA_UPDATE     2
34
35
36
37
38
39
#define COMMAND_RAW_SHOW_LISTENERS  3
#define COMMAND_RAW_MOVE_CLIENTS    4

#define COMMAND_TRANSFORMED_FALLBACK        50
#define COMMAND_TRANSFORMED_SHOW_LISTENERS  53
#define COMMAND_TRANSFORMED_MOVE_CLIENTS    54
40
41

/* Global commands */
42
#define COMMAND_RAW_LIST_MOUNTS   101
43
#define COMMAND_RAW_STATS         102
44
#define COMMAND_RAW_LISTSTREAM    103
45
46
47
#define COMMAND_TRANSFORMED_LIST_MOUNTS   201
#define COMMAND_TRANSFORMED_STATS         202
#define COMMAND_TRANSFORMED_LISTSTREAM    203
48

49
/* Client management commands */
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
#define COMMAND_RAW_KILL_CLIENT   301
#define COMMAND_RAW_KILL_SOURCE   302
#define COMMAND_TRANSFORMED_KILL_CLIENT   401
#define COMMAND_TRANSFORMED_KILL_SOURCE   402

#define FALLBACK_RAW_REQUEST "fallbacks"
#define FALLBACK_TRANSFORMED_REQUEST "fallbacks.xsl"
#define METADATA_REQUEST "metadata"
#define LISTCLIENTS_RAW_REQUEST "listclients"
#define LISTCLIENTS_TRANSFORMED_REQUEST "listclients.xsl"
#define STATS_RAW_REQUEST "stats"
#define STATS_TRANSFORMED_REQUEST "stats.xsl"
#define LISTMOUNTS_RAW_REQUEST "listmounts"
#define LISTMOUNTS_TRANSFORMED_REQUEST "listmounts.xsl"
#define STREAMLIST_RAW_REQUEST "streamlist"
#define STREAMLIST_TRANSFORMED_REQUEST "streamlist.xsl"
#define MOVECLIENTS_RAW_REQUEST "moveclients"
#define MOVECLIENTS_TRANSFORMED_REQUEST "moveclients.xsl"
#define KILLCLIENT_RAW_REQUEST "killclient"
#define KILLCLIENT_TRANSFORMED_REQUEST "killclient.xsl"
#define KILLSOURCE_RAW_REQUEST "killsource"
#define KILLSOURCE_TRANSFORMED_REQUEST "killsource.xsl"
#define ADMIN_XSL_RESPONSE "response.xsl"
#define DEFAULT_RAW_REQUEST ""
#define DEFAULT_TRANSFORMED_REQUEST ""

#define RAW         1
#define TRANSFORMED 2
78
79
int admin_get_command(char *command)
{
80
81
82
83
84
    if(!strcmp(command, FALLBACK_RAW_REQUEST))
        return COMMAND_RAW_FALLBACK;
    else if(!strcmp(command, FALLBACK_TRANSFORMED_REQUEST))
        return COMMAND_TRANSFORMED_FALLBACK;
    else if(!strcmp(command, METADATA_REQUEST))
85
        return COMMAND_METADATA_UPDATE;
86
87
88
89
90
    else if(!strcmp(command, LISTCLIENTS_RAW_REQUEST))
        return COMMAND_RAW_SHOW_LISTENERS;
    else if(!strcmp(command, LISTCLIENTS_TRANSFORMED_REQUEST))
        return COMMAND_TRANSFORMED_SHOW_LISTENERS;
    else if(!strcmp(command, STATS_RAW_REQUEST))
91
        return COMMAND_RAW_STATS;
92
93
    else if(!strcmp(command, STATS_TRANSFORMED_REQUEST))
        return COMMAND_TRANSFORMED_STATS;
94
95
    else if(!strcmp(command, "stats.xml")) /* The old way */
        return COMMAND_RAW_STATS;
96
97
98
99
100
    else if(!strcmp(command, LISTMOUNTS_RAW_REQUEST))
        return COMMAND_RAW_LIST_MOUNTS;
    else if(!strcmp(command, LISTMOUNTS_TRANSFORMED_REQUEST))
        return COMMAND_TRANSFORMED_LIST_MOUNTS;
    else if(!strcmp(command, STREAMLIST_RAW_REQUEST))
101
        return COMMAND_RAW_LISTSTREAM;
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
    else if(!strcmp(command, MOVECLIENTS_RAW_REQUEST))
        return COMMAND_RAW_MOVE_CLIENTS;
    else if(!strcmp(command, MOVECLIENTS_TRANSFORMED_REQUEST))
        return COMMAND_TRANSFORMED_MOVE_CLIENTS;
    else if(!strcmp(command, KILLCLIENT_RAW_REQUEST))
        return COMMAND_RAW_KILL_CLIENT;
    else if(!strcmp(command, KILLCLIENT_TRANSFORMED_REQUEST))
        return COMMAND_TRANSFORMED_KILL_CLIENT;
    else if(!strcmp(command, KILLSOURCE_RAW_REQUEST))
        return COMMAND_RAW_KILL_SOURCE;
    else if(!strcmp(command, KILLSOURCE_TRANSFORMED_REQUEST))
        return COMMAND_TRANSFORMED_KILL_SOURCE;
    else if(!strcmp(command, DEFAULT_TRANSFORMED_REQUEST))
        return COMMAND_TRANSFORMED_STATS;
    else if(!strcmp(command, DEFAULT_RAW_REQUEST))
        return COMMAND_TRANSFORMED_STATS;
118
119
120
121
    else
        return COMMAND_ERROR;
}

122
static void command_fallback(client_t *client, source_t *source, int response);
123
static void command_metadata(client_t *client, source_t *source);
124
125
126
127
128
129
130
131
132
133
static void command_show_listeners(client_t *client, source_t *source,
        int response);
static void command_move_clients(client_t *client, source_t *source,
        int response);
static void command_stats(client_t *client, int response);
static void command_list_mounts(client_t *client, int response);
static void command_kill_client(client_t *client, source_t *source,
        int response);
static void command_kill_source(client_t *client, source_t *source,
        int response);
134
135
136
static void admin_handle_mount_request(client_t *client, source_t *source,
        int command);
static void admin_handle_general_request(client_t *client, int command);
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
static void admin_send_response(xmlDocPtr doc, client_t *client, 
        int response, char *xslt_template);
static void html_write(client_t *client, char *fmt, ...);

xmlDocPtr admin_build_sourcelist(char *current_source)
{
    avl_node *node;
    source_t *source;
    xmlNodePtr xmlnode, srcnode;
    xmlDocPtr doc;
    char buf[22];
    int len = 0;
    time_t now = time(NULL);

    doc = xmlNewDoc("1.0");
    xmlnode = xmlNewDocNode(doc, NULL, "icestats", NULL);
    xmlDocSetRootElement(doc, xmlnode);
154

155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
    if (current_source) {
        xmlNewChild(xmlnode, NULL, "current_source", current_source);
    }

    avl_tree_rlock(global.source_tree);

    node = avl_get_first(global.source_tree);
    while(node) {
        source = (source_t *)node->key;
        srcnode = xmlNewChild(xmlnode, NULL, "source", NULL);
        xmlSetProp(srcnode, "mount", source->mount);

        xmlNewChild(srcnode, NULL, "fallback", 
                    (source->fallback_mount != NULL)?
                    source->fallback_mount:"");
        memset(buf, '\000', sizeof(buf));
        snprintf(buf, sizeof(buf)-1, "%d", source->listeners);
        xmlNewChild(srcnode, NULL, "listeners", buf);
        memset(buf, '\000', sizeof(buf));
        snprintf(buf, sizeof(buf)-1, "%d", now - source->con->con_time);
        xmlNewChild(srcnode, NULL, "Connected", buf);
        xmlNewChild(srcnode, NULL, "Format", 
            source->format->format_description);
        node = avl_get_next(node);
    }
    avl_tree_unlock(global.source_tree);
    return(doc);
}

void admin_send_response(xmlDocPtr doc, client_t *client, 
        int response, char *xslt_template)
{
    char *buff = NULL;
    int len = 0;
    ice_config_t *config;
    char *fullpath_xslt_template;
    int fullpath_xslt_template_len;
    char *adminwebroot;

    client->respcode = 200;
    if (response == RAW) {
        xmlDocDumpMemory(doc, (xmlChar **)&buff, &len);
        html_write(client, "HTTP/1.0 200 OK\r\n"
               "Content-Length: %d\r\n"
               "Content-Type: text/xml\r\n"
               "\r\n", len);
        html_write(client, buff);
    }
    if (response == TRANSFORMED) {
        config = config_get_config();
        adminwebroot = config->adminroot_dir;
        config_release_config();
        fullpath_xslt_template_len = strlen(adminwebroot) + 
            strlen(xslt_template) + 2;
        fullpath_xslt_template = malloc(fullpath_xslt_template_len);
        memset(fullpath_xslt_template, '\000', fullpath_xslt_template_len);
        snprintf(fullpath_xslt_template, fullpath_xslt_template_len, "%s%s%s",
            adminwebroot, PATH_SEPARATOR, xslt_template);
        html_write(client, "HTTP/1.0 200 OK\r\n"
               "Content-Type: text/html\r\n"
               "\r\n");
        DEBUG1("Sending XSLT (%s)", fullpath_xslt_template);
        xslt_transform(doc, fullpath_xslt_template, client);
        free(fullpath_xslt_template);
    }
    if (buff) {
        xmlFree(buff);
    }
}
224
225
226
227
228
229
230
231
232
233
234
235
236
void admin_handle_request(client_t *client, char *uri)
{
    char *mount, *command_string;
    int command;

    if(strncmp("/admin/", uri, 7)) {
        ERROR0("Internal error: admin request isn't");
        client_send_401(client);
        return;
    }

    command_string = uri + 7;

237
    DEBUG1("Got command (%s)", command_string);
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
    command = admin_get_command(command_string);

    if(command < 0) {
        ERROR1("Error parsing command string or unrecognised command: %s",
                command_string);
        client_send_400(client, "Unrecognised command");
        return;
    }

    mount = httpp_get_query_param(client->parser, "mount");

    if(mount != NULL) {
        source_t *source;

        /* This is a mount request, handle it as such */
253
254
        if(!connection_check_admin_pass(client->parser)) {
            if(!connection_check_source_pass(client->parser, mount)) {
255
                INFO1("Bad or missing password on mount modification admin "
256
257
258
259
                      "request (command: %s)", command_string);
                client_send_401(client);
                return;
            }
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
        }
        
        avl_tree_rlock(global.source_tree);
        source = source_find_mount(mount);
        avl_tree_unlock(global.source_tree);

        if(source == NULL) {
            WARN2("Admin command %s on non-existent source %s", 
                    command_string, mount);
            client_send_400(client, "Source does not exist");
            return;
        }

        INFO2("Received admin command %s on mount \"%s\"", 
                command_string, mount);

        admin_handle_mount_request(client, source, command);
    }
    else {

        if(!connection_check_admin_pass(client->parser)) {
281
            INFO1("Bad or missing password on admin command "
282
283
284
285
286
287
288
289
290
291
292
293
294
                  "request (command: %s)", command_string);
            client_send_401(client);
            return;
        }
        
        admin_handle_general_request(client, command);
    }
}

static void admin_handle_general_request(client_t *client, int command)
{
    switch(command) {
        case COMMAND_RAW_STATS:
295
            command_stats(client, RAW);
296
            break;
297
298
        case COMMAND_RAW_LIST_MOUNTS:
            command_list_mounts(client, RAW);
299
300
            break;
        case COMMAND_RAW_LISTSTREAM:
301
302
303
304
305
306
307
308
309
310
311
312
313
            command_list_mounts(client, RAW);
            break;
        case COMMAND_TRANSFORMED_STATS:
            command_stats(client, TRANSFORMED);
            break;
        case COMMAND_TRANSFORMED_LIST_MOUNTS:
            command_list_mounts(client, TRANSFORMED);
            break;
        case COMMAND_TRANSFORMED_LISTSTREAM:
            command_list_mounts(client, TRANSFORMED);
            break;
        case COMMAND_TRANSFORMED_MOVE_CLIENTS:
            command_list_mounts(client, TRANSFORMED);
314
            break;
315
316
317
318
319
320
321
322
323
324
325
        default:
            WARN0("General admin request not recognised");
            client_send_400(client, "Unknown admin request");
            return;
    }
}

static void admin_handle_mount_request(client_t *client, source_t *source, 
        int command)
{
    switch(command) {
326
327
        case COMMAND_RAW_FALLBACK:
            command_fallback(client, source, RAW);
328
329
330
331
            break;
        case COMMAND_METADATA_UPDATE:
            command_metadata(client, source);
            break;
332
333
334
335
336
337
338
339
        case COMMAND_RAW_SHOW_LISTENERS:
            command_show_listeners(client, source, RAW);
            break;
        case COMMAND_RAW_MOVE_CLIENTS:
            command_move_clients(client, source, RAW);
            break;
        case COMMAND_RAW_KILL_CLIENT:
            command_kill_client(client, source, RAW);
340
            break;
341
342
        case COMMAND_RAW_KILL_SOURCE:
            command_kill_source(client, source, RAW);
343
            break;
344
345
        case COMMAND_TRANSFORMED_FALLBACK:
            command_fallback(client, source, RAW);
346
            break;
347
348
349
350
351
352
353
354
355
356
357
        case COMMAND_TRANSFORMED_SHOW_LISTENERS:
            command_show_listeners(client, source, TRANSFORMED);
            break;
        case COMMAND_TRANSFORMED_MOVE_CLIENTS:
            command_move_clients(client, source, TRANSFORMED);
            break;
        case COMMAND_TRANSFORMED_KILL_CLIENT:
            command_kill_client(client, source, TRANSFORMED);
            break;
        case COMMAND_TRANSFORMED_KILL_SOURCE:
            command_kill_source(client, source, TRANSFORMED);
358
            break;
359
360
361
        default:
            WARN0("Mount request not recognised");
            client_send_400(client, "Mount request unknown");
362
            break;
363
364
365
366
367
368
369
370
371
372
373
    }
}

#define COMMAND_REQUIRE(client,name,var) \
    do { \
        (var) = httpp_get_query_param((client)->parser, (name)); \
        if((var) == NULL) { \
            client_send_400((client), "Missing parameter"); \
            return; \
        } \
    } while(0);
374
375
#define COMMAND_OPTIONAL(client,name,var) \
    (var) = httpp_get_query_param((client)->parser, (name))
376

377
static void html_success(client_t *client, char *message)
378
379
380
381
382
383
384
385
386
387
388
389
{
    int bytes;

    client->respcode = 200;
    bytes = sock_write(client->con->sock, 
            "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\n\r\n" 
            "<html><head><title>Admin request successful</title></head>"
            "<body><p>%s</p></body></html>", message);
    if(bytes > 0) client->con->sent_bytes = bytes;
    client_destroy(client);
}

390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
static void html_head(client_t *client)
{
    int bytes;

    client->respcode = 200;
    bytes = sock_write(client->con->sock,
            "HTTP/1.0 200 OK\r\n"
            "Content-Type: text/html\r\n"
            "\r\n"
            "<html><head><title>Admin request</title></head>"
            "<body>");
    if(bytes > 0) client->con->sent_bytes = bytes;
}

static void html_write(client_t *client, char *fmt, ...)
{
    int bytes;
    va_list ap;

    va_start(ap, fmt);
    bytes = sock_write_fmt(client->con->sock, fmt, ap);
    va_end(ap);
    if(bytes > 0) client->con->sent_bytes = bytes;
}

415
416
static void command_move_clients(client_t *client, source_t *source,
    int response)
417
418
419
420
421
{
    char *dest_source;
    source_t *dest;
    avl_node *client_node;
    client_t *current;
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
    xmlDocPtr doc;
    xmlNodePtr node;
    char buf[255];
    int parameters_passed = 0;

    DEBUG0("Doing optional check");
    if (COMMAND_OPTIONAL(client, "destination", dest_source)) {
        parameters_passed = 1;
    }
    DEBUG1("Done optional check (%d)", parameters_passed);
    if (!parameters_passed) {
        doc = admin_build_sourcelist(source->mount);
        admin_send_response(doc, client, response, 
             MOVECLIENTS_TRANSFORMED_REQUEST);
        xmlFreeDoc(doc);
        client_destroy(client);
        return;
    }
440
441
442
443
444
445
446
447
448
449
    
    avl_tree_rlock(global.source_tree);
    dest = source_find_mount(dest_source);
    avl_tree_unlock(global.source_tree);

    if(dest == NULL) {
        client_send_400(client, "No such source");
        return;
    }

450
451
452
453
    doc = xmlNewDoc("1.0");
    node = xmlNewDocNode(doc, NULL, "iceresponse", NULL);
    xmlDocSetRootElement(doc, node);

454
455
456
457
458
459
460
461
462
463
464
465
    avl_tree_wlock(source->client_tree);
    client_node = avl_get_first(source->client_tree);
    while(client_node) {
        current = (client_t *)client_node->key;

        avl_tree_wlock(dest->pending_tree);
        avl_insert(dest->pending_tree, current);
        avl_tree_unlock(dest->pending_tree);

        client_node = avl_get_next(client_node);

        avl_delete(source->client_tree, current, source_remove_client);
466
        source->listeners--;
467
468
469
470
    }

    avl_tree_unlock(source->client_tree);
        
471
472
473
474
475
476
477
478
479
480
    memset(buf, '\000', sizeof(buf));
    snprintf(buf, sizeof(buf)-1, "Clients moved from %s to %s", dest_source, 
        source->mount);
    xmlNewChild(node, NULL, "message", buf);
    xmlNewChild(node, NULL, "return", "1");

    admin_send_response(doc, client, response, 
        ADMIN_XSL_RESPONSE);
    xmlFreeDoc(doc);
    client_destroy(client);
481
482
}

483
484
static void command_show_listeners(client_t *client, source_t *source,
    int response)
485
{
486
487
    xmlDocPtr doc;
    xmlNodePtr node, srcnode, listenernode;
488
489
    avl_node *client_node;
    client_t *current;
490
491
492
    char buf[22];
    int len = 0;
    char *userAgent = NULL;
493
494
    time_t now = time(NULL);

495
496
497
498
499
    doc = xmlNewDoc("1.0");
    node = xmlNewDocNode(doc, NULL, "icestats", NULL);
    srcnode = xmlNewChild(node, NULL, "source", NULL);
    xmlSetProp(srcnode, "mount", source->mount);
    xmlDocSetRootElement(doc, node);
500

501
502
503
    memset(buf, '\000', sizeof(buf));
    snprintf(buf, sizeof(buf)-1, "%d", source->listeners);
    xmlNewChild(srcnode, NULL, "Listeners", buf);
504
505
506
507
508
509

    avl_tree_rlock(source->client_tree);

    client_node = avl_get_first(source->client_tree);
    while(client_node) {
        current = (client_t *)client_node->key;
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
        listenernode = xmlNewChild(srcnode, NULL, "listener", NULL);
        xmlNewChild(listenernode, NULL, "IP", current->con->ip);
        userAgent = httpp_getvar(current->parser, "user-agent");
        if (userAgent) {
            xmlNewChild(listenernode, NULL, "UserAgent", userAgent);
        }
        else {
            xmlNewChild(listenernode, NULL, "UserAgent", "Unknown");
        }
        memset(buf, '\000', sizeof(buf));
        snprintf(buf, sizeof(buf)-1, "%d", now - current->con->con_time);
        xmlNewChild(listenernode, NULL, "Connected", buf);
        memset(buf, '\000', sizeof(buf));
        snprintf(buf, sizeof(buf)-1, "%d", current->con->id);
        xmlNewChild(listenernode, NULL, "ID", buf);
525
526
527
528
        client_node = avl_get_next(client_node);
    }

    avl_tree_unlock(source->client_tree);
529
530
531
    admin_send_response(doc, client, response, 
        LISTCLIENTS_TRANSFORMED_REQUEST);
    xmlFreeDoc(doc);
532
533
534
    client_destroy(client);
}

535
536
static void command_kill_source(client_t *client, source_t *source,
    int response)
537
{
538
539
540
541
542
543
544
545
546
    xmlDocPtr doc;
    xmlNodePtr node;

    doc = xmlNewDoc("1.0");
    node = xmlNewDocNode(doc, NULL, "iceresponse", NULL);
    xmlNewChild(node, NULL, "message", "Source Removed");
    xmlNewChild(node, NULL, "return", "1");
    xmlDocSetRootElement(doc, node);

547
548
    source->running = 0;

549
550
551
552
    admin_send_response(doc, client, response, 
        ADMIN_XSL_RESPONSE);
    xmlFreeDoc(doc);
    client_destroy(client);
553
554
}

555
556
static void command_kill_client(client_t *client, source_t *source,
    int response)
557
558
559
560
{
    char *idtext;
    int id;
    client_t *listener;
561
562
563
    xmlDocPtr doc;
    xmlNodePtr node;
    char buf[50] = "";
564
565
566
567
568
569
570

    COMMAND_REQUIRE(client, "id", idtext);

    id = atoi(idtext);

    listener = source_find_client(source, id);

571
572
573
574
575
    doc = xmlNewDoc("1.0");
    node = xmlNewDocNode(doc, NULL, "iceresponse", NULL);
    xmlDocSetRootElement(doc, node);
    DEBUG1("Response is %d", response);

576
577
578
579
580
581
582
    if(listener != NULL) {
        INFO1("Admin request: client %d removed", id);

        /* This tags it for removal on the next iteration of the main source
         * loop
         */
        listener->con->error = 1;
583
584
585
586
        memset(buf, '\000', sizeof(buf));
        snprintf(buf, sizeof(buf)-1, "Client %d removed", id);
        xmlNewChild(node, NULL, "message", buf);
        xmlNewChild(node, NULL, "return", "1");
587
588
    }
    else {
589
590
591
592
        memset(buf, '\000', sizeof(buf));
        snprintf(buf, sizeof(buf)-1, "Client %d not found", id);
        xmlNewChild(node, NULL, "message", buf);
        xmlNewChild(node, NULL, "return", "0");
593
    }
594
595
596
597
    admin_send_response(doc, client, response, 
        ADMIN_XSL_RESPONSE);
    xmlFreeDoc(doc);
    client_destroy(client);
598
599
}

600
601
static void command_fallback(client_t *client, source_t *source,
    int response)
602
603
604
605
606
607
608
609
610
611
612
613
{
    char *fallback;
    char *old;

    DEBUG0("Got fallback request");

    COMMAND_REQUIRE(client, "fallback", fallback);

    old = source->fallback_mount;
    source->fallback_mount = strdup(fallback);
    free(old);

614
    html_success(client, "Fallback configured");
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
}

static void command_metadata(client_t *client, source_t *source)
{
    char *action;
    char *value;
    mp3_state *state;

    DEBUG0("Got metadata update request");

    COMMAND_REQUIRE(client, "mode", action);
    COMMAND_REQUIRE(client, "song", value);

    if(source->format->type != FORMAT_TYPE_MP3) {
        client_send_400(client, "Not mp3, cannot update metadata");
        return;
    }

    if(strcmp(action, "updinfo") != 0) {
        client_send_400(client, "No such action");
        return;
    }

    state = source->format->_state;

    thread_mutex_lock(&(state->lock));
    free(state->metadata);
    state->metadata = strdup(value);
    state->metadata_age++;
    state->metadata_raw = 0;
    thread_mutex_unlock(&(state->lock));

647
648
    DEBUG2("Metadata on mountpoint %s changed to \"%s\"", 
        source->mount, value);
649
650
    stats_event(source->mount, "title", value);

651
    html_success(client, "Metadata update successful");
652
653
}

654
655
656
static void command_stats(client_t *client, int response) {
    xmlDocPtr doc;

657
658
    DEBUG0("Stats request, sending xml stats");

659
660
661
    stats_get_xml(&doc);
    admin_send_response(doc, client, response, STATS_TRANSFORMED_REQUEST);
    xmlFreeDoc(doc);
662
663
664
665
    client_destroy(client);
    return;
}

666
static void command_list_mounts(client_t *client, int response) {
667
668
    avl_node *node;
    source_t *source;
669
    int bytes;
670
671
672
673
674
    xmlDocPtr doc;
    xmlNodePtr xmlnode, srcnode, datanode;
    char buf[22];
    int len = 0;
    time_t now = time(NULL);
675
676
677

    DEBUG0("List mounts request");

678
    doc = admin_build_sourcelist(NULL);
679

680
681
    admin_send_response(doc, client, response, LISTMOUNTS_TRANSFORMED_REQUEST);
    xmlFreeDoc(doc);
682
683
684
685
    client_destroy(client);
    return;
}