yp.c 23.8 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12
/* Icecast
 *
 * This program is distributed under the GNU General Public License, version 2.
 * A copy of this license is included with this source.
 *
 * Copyright 2000-2004, Jack Moffitt <jack@xiph.org, 
 *                      Michael Smith <msmith@xiph.org>,
 *                      oddsock <oddsock@xiph.org>,
 *                      Karl Heyes <karl@xiph.org>
 *                      and others (see AUTHORS for details).
 */

13
/* -*- c-basic-offset: 4; indent-tabs-mode: nil; -*- */
14 15 16 17
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

18 19
#include <stdio.h>
#include <string.h>
20
#include <stdlib.h>
21
#include <curl/curl.h>
22 23 24 25 26 27 28 29 30

#include <thread/thread.h>

#include "connection.h"
#include "refbuf.h"
#include "client.h"
#include "logging.h"
#include "format.h"
#include "source.h"
31
#include "cfgfile.h"
32
#include "stats.h"
33 34 35 36

#ifdef WIN32
#define snprintf _snprintf
#endif
37

Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
38
#define CATMODULE "yp" 
39

40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57
struct yp_server
{
    char        *url;
    unsigned    url_timeout;
    unsigned    touch_interval;
    int         remove;

    CURL *curl;
    struct ypdata_tag *mounts, *pending_mounts;
    struct yp_server *next;
    char curl_error[CURL_ERROR_SIZE];
};



typedef struct ypdata_tag
{
    int remove;
58
    int release;
59 60 61 62 63 64 65 66 67 68 69 70 71 72
    int cmd_ok;

    char *sid;
    char *mount;
    char *url;
    char *listen_url;
    char *server_name;
    char *server_desc;
    char *server_genre;
    char *cluster_password;
    char *bitrate;
    char *audio_info;
    char *server_type;
    char *current_song;
73
    char *subtype;
74 75 76 77 78 79 80 81 82 83 84 85 86 87

    struct yp_server *server;
    time_t      next_update;
    unsigned    touch_interval;
    char        *error_msg;
    unsigned    (*process)(struct ypdata_tag *yp, char *s, unsigned len);

    struct ypdata_tag *next;
} ypdata_t;


static rwlock_t yp_lock;
static mutex_t yp_pending_lock;

88
volatile static struct yp_server *active_yps = NULL, *pending_yps = NULL;
89
static volatile int yp_update = 0;
90 91 92 93 94
static int yp_running;
static time_t now;
static thread_type *yp_thread;

static void *yp_update_thread(void *arg);
95
static void add_yp_info (ypdata_t *yp, void *info, int type);
96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130
static unsigned do_yp_remove (ypdata_t *yp, char *s, unsigned len);
static unsigned do_yp_add (ypdata_t *yp, char *s, unsigned len);
static unsigned do_yp_touch (ypdata_t *yp, char *s, unsigned len);
static void yp_destroy_ypdata(ypdata_t *ypdata);


/* curl callback used to parse headers coming back from the YP server */
static int handle_returned_header (void *ptr, size_t size, size_t nmemb, void *stream)
{
    ypdata_t *yp = stream;
    unsigned bytes = size * nmemb;

    /* DEBUG2 ("header from YP is \"%.*s\"", bytes, ptr); */
    if (strncmp (ptr, "YPResponse: 1", 13) == 0)
        yp->cmd_ok = 1;

    if (strncmp (ptr, "YPMessage: ", 11) == 0)
    {
        unsigned len = bytes - 11;
        free (yp->error_msg);
        yp->error_msg = calloc (1, len);
        if (yp->error_msg)
            sscanf (ptr, "YPMessage: %[^\r\n]", yp->error_msg);
    }

    if (yp->process == do_yp_add)
    {
        if (strncmp (ptr, "SID: ", 5) == 0)
        {
            unsigned len = bytes - 5;
            free (yp->sid);
            yp->sid = calloc (1, len);
            if (yp->sid)
                sscanf (ptr, "SID: %[^\r\n]", yp->sid);
        }
131 132 133 134 135 136 137 138 139
    }
    if (strncmp (ptr, "TouchFreq: ", 11) == 0)
    {
        unsigned secs;
        sscanf (ptr, "TouchFreq: %u", &secs);
        if (secs < 30)
            secs = 30;
        DEBUG1 ("server touch interval is %u", secs);
        yp->touch_interval = secs;
140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156
    }
    return (int)bytes;
}


/* capture returned data, but don't do anything with it, shouldn't be any */
static int handle_returned_data (void *ptr, size_t size, size_t nmemb, void *stream)
{
    return (int)(size*nmemb);
}


/* search the active and pending YP server lists */
static struct yp_server *find_yp_server (const char *url)
{
    struct yp_server *server;

157
    server = (struct yp_server *)active_yps;
158 159 160 161 162 163
    while (server)
    {
        if (strcmp (server->url, url) == 0)
            return server;
        server = server->next;
    }
164
    server = (struct yp_server *)pending_yps;
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
    while (server)
    {
        if (strcmp (server->url, url) == 0)
            break;
        server = server->next;
    }
    return server;
}


static void destroy_yp_server (struct yp_server *server)
{
    if (server == NULL)
        return;
    DEBUG1 ("Removing YP server entry for %s", server->url);
    if (server->curl)
        curl_easy_cleanup (server->curl);
    if (server->mounts) WARN0 ("active ypdata not freed up");
    if (server->pending_mounts) WARN0 ("pending ypdata not freed up");
    free (server->url);
    free (server);
}



/* search for a ypdata entry corresponding to a specific mountpoint */
191
static ypdata_t *find_yp_mount (ypdata_t *mounts, const char *mount)
192
{
193
    ypdata_t *yp = mounts;
194 195 196 197 198 199 200 201 202
    while (yp)
    {
        if (strcmp (yp->mount, mount) == 0)
            break;
        yp = yp->next;
    }
    return yp;
}

203 204 205

void yp_recheck_config (ice_config_t *config)
{
206 207 208 209 210 211
    int i;
    struct yp_server *server;

    DEBUG0("Updating YP configuration");
    thread_rwlock_rlock (&yp_lock);

212
    server = (struct yp_server *)active_yps;
213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233
    while (server)
    {
        server->remove = 1;
        server = server->next;
    }
    /* for each yp url in config, check to see if one exists 
       if not, then add it. */
    for (i=0 ; i < config->num_yp_directories; i++)
    {
        server = find_yp_server (config->yp_url[i]);
        if (server == NULL)
        {
            server = calloc (1, sizeof (struct yp_server));

            if (server == NULL)
            {
                destroy_yp_server (server);
                break;
            }
            server->url = strdup (config->yp_url[i]);
            server->url_timeout = config->yp_url_timeout[i];
234
            server->touch_interval = config->yp_touch_interval[i];
235 236 237 238 239 240 241 242
            server->curl = curl_easy_init();
            if (server->curl == NULL)
            {
                destroy_yp_server (server);
                break;
            }
            if (server->touch_interval < 30)
                server->touch_interval = 30;
243
            curl_easy_setopt (server->curl, CURLOPT_USERAGENT, ICECAST_VERSION_STRING);
244 245 246 247 248 249 250
            curl_easy_setopt (server->curl, CURLOPT_URL, server->url);
            curl_easy_setopt (server->curl, CURLOPT_HEADERFUNCTION, handle_returned_header);
            curl_easy_setopt (server->curl, CURLOPT_WRITEFUNCTION, handle_returned_data);
            curl_easy_setopt (server->curl, CURLOPT_WRITEDATA, server->curl);
            curl_easy_setopt (server->curl, CURLOPT_TIMEOUT, server->url_timeout);
            curl_easy_setopt (server->curl, CURLOPT_NOSIGNAL, 1L);
            curl_easy_setopt (server->curl, CURLOPT_ERRORBUFFER, &(server->curl_error[0]));
251
            server->next = (struct yp_server *)pending_yps;
252 253 254 255 256 257 258 259 260 261 262
            pending_yps = server;
            INFO3 ("Adding new YP server \"%s\" (timeout %ds, default interval %ds)",
                    server->url, server->url_timeout, server->touch_interval);
        }
        else
        {
            server->remove = 0;
        }
    }
    thread_rwlock_unlock (&yp_lock);
    yp_update = 1;
263 264
}

265

266 267
void yp_initialize()
{
268
    ice_config_t *config = config_get_config();
269 270
    thread_rwlock_create (&yp_lock);
    thread_mutex_create (&yp_pending_lock);
271 272
    yp_recheck_config (config);
    config_release_config ();
273 274
    yp_thread = thread_create("YP Touch Thread", yp_update_thread,
                            (void *)NULL, THREAD_ATTACHED);
275
}
276 277 278 279 280



/* handler for curl, checks if successful handling occurred */
static int send_to_yp (const char *cmd, ypdata_t *yp, char *post)
281
{
282 283 284 285 286 287 288 289 290 291 292
    int curlcode;
    struct yp_server *server = yp->server;

    /* DEBUG2 ("send YP (%s):%s", cmd, post); */
    yp->cmd_ok = 0;
    curl_easy_setopt (server->curl, CURLOPT_POSTFIELDS, post);
    curl_easy_setopt (server->curl, CURLOPT_WRITEHEADER, yp);
    curlcode = curl_easy_perform (server->curl);
    if (curlcode)
    {
        yp->process = do_yp_add;
293
        yp->next_update += 300;
294 295
        ERROR2 ("connection to %s failed with \"%s\"", server->url, server->curl_error);
        return -1;
296
    }
297 298
    if (yp->cmd_ok == 0)
    {
299 300
        if (yp->error_msg == NULL)
            yp->error_msg = strdup ("no response from server");
301
        yp->process = do_yp_add;
302
        yp->next_update += 300;
303 304
        ERROR3 ("YP %s on %s failed: %s", cmd, server->url, yp->error_msg);
        return -1;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
305
    }
306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323
    DEBUG2 ("YP %s at %s succeeded", cmd, server->url);
    return 0;
}


/* routines for building and issues requests to the YP server */
static unsigned do_yp_remove (ypdata_t *yp, char *s, unsigned len)
{
    if (yp->sid)
    {
        int ret = snprintf (s, len, "action=remove&sid=%s", yp->sid);
        if (ret >= (signed)len)
            return ret+1;

        INFO1 ("clearing up YP entry for %s", yp->mount);
        send_to_yp ("remove", yp, s);
        free (yp->sid);
        yp->sid = NULL;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
324
    }
325 326 327
    yp_update = 1;
    yp->remove = 1;
    yp->process = do_yp_add;
328

329
    return 0;
330 331
}

332 333

static unsigned do_yp_add (ypdata_t *yp, char *s, unsigned len)
334
{
335 336 337
    int ret;
    char *value;

338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361
    value = stats_get_value (yp->mount, "server_type");
    add_yp_info (yp, value, YP_SERVER_TYPE);
    free (value);

    value = stats_get_value (yp->mount, "server_name");
    add_yp_info (yp, value, YP_SERVER_NAME);
    free (value);

    value = stats_get_value (yp->mount, "server_url");
    add_yp_info (yp, value, YP_SERVER_URL);
    free (value);

    value = stats_get_value (yp->mount, "genre");
    add_yp_info (yp, value, YP_SERVER_GENRE);
    free (value);

    value = stats_get_value (yp->mount, "bitrate");
    add_yp_info (yp, value, YP_BITRATE);
    free (value);

    value = stats_get_value (yp->mount, "server_description");
    add_yp_info (yp, value, YP_SERVER_DESC);
    free (value);

362
    value = stats_get_value (yp->mount, "subtype");
363 364 365 366 367 368
    add_yp_info (yp, value, YP_SUBTYPE);
    free (value);

    value = stats_get_value (yp->mount, "audio_info");
    add_yp_info (yp, value, YP_AUDIO_INFO);
    free (value);
369 370 371

    ret = snprintf (s, len, "action=add&sn=%s&genre=%s&cpswd=%s&desc="
                    "%s&url=%s&listenurl=%s&type=%s&stype=%s&b=%s&%s\r\n",
372 373
                    yp->server_name, yp->server_genre, yp->cluster_password,
                    yp->server_desc, yp->url, yp->listen_url,
374
                    yp->server_type, yp->subtype, yp->bitrate, yp->audio_info);
375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392
    if (ret >= (signed)len)
        return ret+1;
    if (send_to_yp ("add", yp, s) == 0)
    {
        yp->process = do_yp_touch;
        /* force first touch in 5 secs */
        yp->next_update = time(NULL) + 5;
    }

    return 0;
}


static unsigned do_yp_touch (ypdata_t *yp, char *s, unsigned len)
{
    unsigned listeners = 0;
    char *val, *artist, *title;
    int ret;
393
    char *max_listeners;
394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410

    artist = (char *)stats_get_value (yp->mount, "artist");
    title = (char *)stats_get_value (yp->mount, "title");
    if (artist || title)
    {
         char *song;
         char *separator = " - ";
         if (artist == NULL)
         {
             artist = strdup("");
             separator = "";
         }
         if (title == NULL) title = strdup("");
         song = malloc (strlen (artist) + strlen (title) + strlen (separator) +1);
         if (song)
         {
             sprintf (song, "%s%s%s", artist, separator, title);
411 412
             add_yp_info(yp, song, YP_CURRENT_SONG);
             stats_event (yp->mount, "yp_currently_playing", song);
413 414 415 416 417 418 419 420 421 422 423 424
             free (song);
         }
    }
    free (artist);
    free (title);

    val = (char *)stats_get_value (yp->mount, "listeners");
    if (val)
    {
        listeners = atoi (val);
        free (val);
    }
425 426 427 428 429 430
    max_listeners = stats_get_value (yp->mount, "max_listeners");
    if (max_listeners == NULL || strcmp (max_listeners, "unlimited") == 0)
    {
        free (max_listeners);
        max_listeners = (char *)stats_get_value (NULL, "client_limit");
    }
431 432 433
    val = stats_get_value (yp->mount, "subtype");
    if (val)
    {
434
        add_yp_info (yp, val, YP_SUBTYPE);
435 436
        free (val);
    }
437 438

    ret = snprintf (s, len, "action=touch&sid=%s&st=%s"
439 440
            "&listeners=%u&max_listeners=%s&stype=%s\r\n",
            yp->sid, yp->current_song, listeners, max_listeners, yp->subtype);
441

442
    free (max_listeners);
443 444 445 446 447
    if (ret >= (signed)len)
        return ret+1; /* space required for above text and nul*/

    send_to_yp ("touch", yp, s);
    return 0;
448
}
449

450 451 452


static void process_ypdata (struct yp_server *server, ypdata_t *yp)
453
{
454 455
    unsigned len = 512;
    char *s = NULL, *tmp;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
456

457 458 459
    if (now < yp->next_update)
        return;
    yp->next_update = now + yp->touch_interval;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
460

461 462 463 464 465 466 467
    /* loop just in case the memory area isn't big enough */
    while (1)
    {
        unsigned ret;
        if ((tmp = realloc (s, len)) == NULL)
            return;
        s = tmp;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
468

469 470 471 472 473 474
        if (yp->release)
        {
            yp->process = do_yp_remove;
            yp->next_update = 0;
        }

475 476 477 478 479
        ret = yp->process (yp, s, len);
        if (ret == 0)
        {
           free (s);
           return;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
480
        }
481
        len = ret;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
482
    }
483
}
484 485 486


static void yp_process_server (struct yp_server *server)
487
{
488 489 490 491 492 493 494 495 496 497 498 499 500 501
    ypdata_t *yp;

    /* DEBUG1("processing yp server %s", server->url); */
    yp = server->mounts;
    while (yp)
    {
        now = time (NULL);
        process_ypdata (server, yp);
        yp = yp->next;
    }
}



502
static ypdata_t *create_yp_entry (const char *mount)
503 504
{
    ypdata_t *yp;
505
    char *s;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
506

507 508 509 510 511 512
    yp = calloc (1, sizeof (ypdata_t));
    do
    {
        unsigned len = 512;
        int ret;
        char *url;
513
        mount_proxy *mountproxy = NULL;
514 515 516 517
        ice_config_t *config;

        if (yp == NULL)
            break;
518
        yp->mount = strdup (mount);
519 520 521 522 523 524 525 526 527
        yp->server_name = strdup ("");
        yp->server_desc = strdup ("");
        yp->server_genre = strdup ("");
        yp->bitrate = strdup ("");
        yp->server_type = strdup ("");
        yp->cluster_password = strdup ("");
        yp->url = strdup ("");
        yp->current_song = strdup ("");
        yp->audio_info = strdup ("");
528
        yp->subtype = strdup ("");
529 530 531 532 533 534
        yp->process = do_yp_add;

        url = malloc (len);
        if (url == NULL)
            break;
        config = config_get_config();
535
        ret = snprintf (url, len, "http://%s:%d%s", config->hostname, config->port, mount);
536
        if (ret >= (signed)len)
537
        {
538 539
            s = realloc (url, ++ret);
            if (s) url = s;
540
            snprintf (url, ret, "http://%s:%d%s", config->hostname, config->port, mount);
541
        }
542

543
        mountproxy = config_find_mount (config, mount);
544
        if (mountproxy && mountproxy->cluster_password)
545
            add_yp_info (yp, mountproxy->cluster_password, YP_CLUSTER_PASSWORD);
546
        config_release_config();
547

548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563
        yp->listen_url = util_url_escape (url);
        free (url);
        if (yp->listen_url == NULL)
            break;

        return yp;
    } while (0);

    yp_destroy_ypdata (yp);
    return NULL;
}


/* Check for changes in the YP servers configured */
static void check_servers ()
{
564 565
    struct yp_server *server = (struct yp_server *)active_yps,
                     **server_p = (struct yp_server **)&active_yps;
566 567 568 569 570 571 572 573 574 575

    while (server)
    {
        if (server->remove)
        {
            struct yp_server *to_go = server;
            DEBUG1 ("YP server \"%s\"removed", server->url);
            *server_p = server->next;
            server = server->next;
            destroy_yp_server (to_go);
576
            continue;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
577
        }
578 579 580 581 582 583 584 585
        server_p = &server->next;
        server = server->next;
    }
    /* add new server entries */
    while (pending_yps)
    {
        avl_node *node;

586
        server = (struct yp_server *)pending_yps;
587 588 589
        pending_yps = server->next;

        DEBUG1("Add pending yps %s", server->url);
590
        server->next = (struct yp_server *)active_yps;
591 592 593 594 595 596 597 598 599 600
        active_yps = server;

        /* new YP server configured, need to populate with existing sources */
        avl_tree_rlock (global.source_tree);
        node = avl_get_first (global.source_tree);
        while (node)
        {
            ypdata_t *yp;

            source_t *source = node->key;
601
            if ((yp = create_yp_entry (source->mount)) != NULL)
602 603 604 605 606 607
            {
                DEBUG1 ("Adding existing mount %s", source->mount);
                yp->server = server;
                yp->touch_interval = server->touch_interval;
                yp->next = server->mounts;
                server->mounts = yp;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
608
            }
609
            node = avl_get_next (node);
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
610
        }
611
        avl_tree_unlock (global.source_tree);
612
    }
613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632
}


static void add_pending_yp (struct yp_server *server)
{
    ypdata_t *current, *yp;
    unsigned count = 0;

    if (server->pending_mounts == NULL)
        return;
    current = server->mounts;
    server->mounts = server->pending_mounts;
    server->pending_mounts = NULL;
    yp = server->mounts;
    while (1)
    {
        count++;
        if (yp->next == NULL)
            break;
        yp = yp->next;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
633
    }
634 635 636 637
    yp->next = current;
    DEBUG2 ("%u YP entries added to %s", count, server->url);
}

638

639 640 641
static void delete_marked_yp (struct yp_server *server)
{
    ypdata_t *yp = server->mounts, **prev = &server->mounts;
642

643 644 645 646 647 648 649 650 651 652 653 654 655 656
    while (yp)
    {
        if (yp->remove)
        {
            ypdata_t *to_go = yp;
            DEBUG2 ("removed %s from YP server %s", yp->mount, server->url);
            *prev = yp->next;
            yp = yp->next;
            yp_destroy_ypdata (to_go);
            continue;
        }
        prev = &yp->next;
        yp = yp->next;
    }
657
}
658 659 660


static void *yp_update_thread(void *arg)
661
{
662 663 664 665 666 667 668 669 670 671 672
    INFO0("YP update thread started");

    yp_running = 1;
    while (yp_running)
    {
        struct yp_server *server;

        thread_sleep (200000);

        /* do the YP communication */
        thread_rwlock_rlock (&yp_lock);
673
        server = (struct yp_server *)active_yps;
674 675 676 677 678
        while (server)
        {
            /* DEBUG1 ("trying %s", server->url); */
            yp_process_server (server);
            server = server->next;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
679
        }
680 681 682 683 684 685 686
        thread_rwlock_unlock (&yp_lock);

        /* update the local YP structure */
        if (yp_update)
        {
            thread_rwlock_wlock (&yp_lock);
            check_servers ();
687
            server = (struct yp_server *)active_yps;
688 689 690 691 692 693
            while (server)
            {
                /* DEBUG1 ("Checking yps %s", server->url); */
                add_pending_yp (server);
                delete_marked_yp (server);
                server = server->next;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
694
            }
695 696
            yp_update = 0;
            thread_rwlock_unlock (&yp_lock);
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
697 698
        }
    }
699 700 701 702 703
    thread_rwlock_destroy (&yp_lock);
    thread_mutex_destroy (&yp_pending_lock);
    /* free server and ypdata left */
    while (active_yps)
    {
704
        struct yp_server *server = (struct yp_server *)active_yps;
705 706 707
        active_yps = server->next;
        destroy_yp_server (server);
    }
708

709
    return NULL;
710
}
711

712 713 714


static void yp_destroy_ypdata(ypdata_t *ypdata)
715
{
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
716
    if (ypdata) {
717 718 719 720 721
        if (ypdata->mount) {
            free (ypdata->mount);
        }
        if (ypdata->url) {
            free (ypdata->url);
722
        }
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749
        if (ypdata->sid) {
            free(ypdata->sid);
        }
        if (ypdata->server_name) {
            free(ypdata->server_name);
        }
        if (ypdata->server_desc) {
            free(ypdata->server_desc);
        }
        if (ypdata->server_genre) {
            free(ypdata->server_genre);
        }
        if (ypdata->cluster_password) {
            free(ypdata->cluster_password);
        }
        if (ypdata->listen_url) {
            free(ypdata->listen_url);
        }
        if (ypdata->current_song) {
            free(ypdata->current_song);
        }
        if (ypdata->bitrate) {
            free(ypdata->bitrate);
        }
        if (ypdata->server_type) {
            free(ypdata->server_type);
        }
750 751 752
        if (ypdata->audio_info) {
            free(ypdata->audio_info);
        }
753
        free (ypdata->subtype);
754 755
        free (ypdata->error_msg);
        free (ypdata);
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
756
    }
757
}
758

759
static void add_yp_info (ypdata_t *yp, void *info, int type)
760 761
{
    char *escaped;
762 763

    if (!info)
764
        return;
765

766 767 768 769
    escaped = util_url_escape(info);
    if (escaped == NULL)
        return;

770 771
    switch (type)
    {
772
        case YP_SERVER_NAME:
773 774
            free (yp->server_name);
            yp->server_name = escaped;
775
            break;
776
        case YP_SERVER_DESC:
777 778
            free (yp->server_desc);
            yp->server_desc = escaped;
779
            break;
780
        case YP_SERVER_GENRE:
781 782
            free (yp->server_genre);
            yp->server_genre = escaped;
783
            break;
784
        case YP_SERVER_URL:
785 786
            free (yp->url);
            yp->url = escaped;
787
            break;
788
        case YP_BITRATE:
789 790
            free (yp->bitrate);
            yp->bitrate = escaped;
791
            break;
792
        case YP_AUDIO_INFO:
793 794
            free (yp->audio_info);
            yp->audio_info = escaped;
795
            break;
796
        case YP_SERVER_TYPE:
797 798
            free (yp->server_type);
            yp->server_type = escaped;
799
            break;
800
        case YP_CURRENT_SONG:
801 802
            free (yp->current_song);
            yp->current_song = escaped;
803
            break;
804
        case YP_CLUSTER_PASSWORD:
805 806
            free (yp->cluster_password);
            yp->cluster_password = escaped;
807
            break;
808
        case YP_SUBTYPE:
809 810
            free (yp->subtype);
            yp->subtype = escaped;
811
            break;
812 813 814 815 816
    }
}


/* Add YP entries to active servers */
817
void yp_add (const char *mount)
818 819 820 821 822 823 824 825
{
    struct yp_server *server;

    /* make sure YP thread is not modifying the lists */
    thread_rwlock_rlock (&yp_lock);

    /* make sure we don't race against another yp_add */
    thread_mutex_lock (&yp_pending_lock);
826
    server = (struct yp_server *)active_yps;
827 828 829 830
    while (server)
    {
        ypdata_t *yp;
        /* add new ypdata to each servers pending yp */
831
        if ((yp = create_yp_entry (mount)) != NULL)
832
        {
833
            DEBUG2 ("Adding %s to %s", mount, server->url);
834 835 836
            yp->server = server;
            yp->touch_interval = server->touch_interval;
            yp->next = server->pending_mounts;
837
            yp->next_update = time(NULL) + 5;
838 839 840 841 842 843 844 845 846 847 848 849 850 851
            server->pending_mounts = yp;
            yp_update = 1;
        }
        server = server->next;
    }
    thread_mutex_unlock (&yp_pending_lock);
    thread_rwlock_unlock (&yp_lock);
}



/* Mark an existing entry in the YP list as to be marked for deletion */
void yp_remove (const char *mount)
{
852
    struct yp_server *server = (struct yp_server *)active_yps;
853 854 855 856

    thread_rwlock_rlock (&yp_lock);
    while (server)
    {
857
        ypdata_t *yp = find_yp_mount (server->mounts, mount);
858 859
        if (yp)
        {
860 861
            DEBUG2 ("release %s on YP %s", mount, server->url);
            yp->release = 1;
862
            yp->next_update = 0;
863
        }
864
        server = server->next;
865
    }
866
    thread_rwlock_unlock (&yp_lock);
867
}
868 869 870 871 872 873


/* This is similar to yp_remove, but we force a touch
 * attempt */
void yp_touch (const char *mount)
{
874
    struct yp_server *server = (struct yp_server *)active_yps;
875
    time_t trigger;
876
    ypdata_t *search_list = NULL;
877 878 879 880

    thread_rwlock_rlock (&yp_lock);
    /* do update in 3 secs, give stats chance to update */
    trigger = time(NULL) + 3;
881 882 883
    if (server)
        search_list = server->mounts;

884 885
    while (server)
    {
886
        ypdata_t *yp = find_yp_mount (search_list, mount);
887 888
        if (yp)
        {
889
            /* we may of found old entries not purged yet, so skip them */
890
            if (yp->release != 0 || yp->remove != 0)
891 892 893 894
            {
                search_list = yp->next;
                continue;
            }
895 896 897 898 899
            /* only force if touch */
            if (yp->process == do_yp_touch)
                yp->next_update = trigger;
        }
        server = server->next;
900 901
        if (server)
            search_list = server->mounts;
902 903 904 905 906 907 908 909 910
    }
    thread_rwlock_unlock (&yp_lock);
}


void yp_shutdown ()
{
    yp_running = 0;
    yp_update = 1;
911 912
    if (yp_thread)
        thread_join (yp_thread);
913
    curl_global_cleanup();
914
    INFO0 ("YP thread down");
915 916
}