yp.c 24.3 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;

Karl Heyes's avatar
Karl Heyes committed
88
static volatile struct yp_server *active_yps = NULL, *pending_yps = NULL;
89
static volatile int yp_update = 0;
90 91 92
static int yp_running;
static time_t now;
static thread_type *yp_thread;
Karl Heyes's avatar
Karl Heyes committed
93
static volatile unsigned client_limit = 0;
94
static volatile char *server_version = NULL;
95 96

static void *yp_update_thread(void *arg);
97
static void add_yp_info (ypdata_t *yp, void *info, int type);
98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132
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);
        }
133 134 135 136 137 138 139 140 141
    }
    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;
142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158
    }
    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;

159
    server = (struct yp_server *)active_yps;
160 161 162 163 164 165
    while (server)
    {
        if (strcmp (server->url, url) == 0)
            return server;
        server = server->next;
    }
166
    server = (struct yp_server *)pending_yps;
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
    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 */
193
static ypdata_t *find_yp_mount (ypdata_t *mounts, const char *mount)
194
{
195
    ypdata_t *yp = mounts;
196 197 198 199 200 201 202 203 204
    while (yp)
    {
        if (strcmp (yp->mount, mount) == 0)
            break;
        yp = yp->next;
    }
    return yp;
}

205 206 207

void yp_recheck_config (ice_config_t *config)
{
208 209 210 211 212 213
    int i;
    struct yp_server *server;

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

214
    server = (struct yp_server *)active_yps;
215 216 217 218 219
    while (server)
    {
        server->remove = 1;
        server = server->next;
    }
Karl Heyes's avatar
Karl Heyes committed
220
    client_limit = config->client_limit;
221 222
    free ((char*)server_version);
    server_version = strdup (config->server_id);
223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238
    /* 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];
239
            server->touch_interval = config->yp_touch_interval[i];
240 241 242 243 244 245 246 247
            server->curl = curl_easy_init();
            if (server->curl == NULL)
            {
                destroy_yp_server (server);
                break;
            }
            if (server->touch_interval < 30)
                server->touch_interval = 30;
248
            curl_easy_setopt (server->curl, CURLOPT_USERAGENT, server_version);
249 250 251 252 253 254 255
            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]));
256
            server->next = (struct yp_server *)pending_yps;
257 258 259 260 261 262 263 264 265 266 267
            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;
268 269
}

270

271
void yp_initialize(void)
272
{
273
    ice_config_t *config = config_get_config();
274 275
    thread_rwlock_create (&yp_lock);
    thread_mutex_create (&yp_pending_lock);
276 277
    yp_recheck_config (config);
    config_release_config ();
278 279
    yp_thread = thread_create("YP Touch Thread", yp_update_thread,
                            (void *)NULL, THREAD_ATTACHED);
280
}
281 282 283 284 285



/* handler for curl, checks if successful handling occurred */
static int send_to_yp (const char *cmd, ypdata_t *yp, char *post)
286
{
287 288 289 290 291 292 293 294 295 296 297
    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;
298
        yp->next_update += 300;
299 300
        ERROR2 ("connection to %s failed with \"%s\"", server->url, server->curl_error);
        return -1;
301
    }
302 303
    if (yp->cmd_ok == 0)
    {
304 305
        if (yp->error_msg == NULL)
            yp->error_msg = strdup ("no response from server");
306
        yp->process = do_yp_add;
307
        yp->next_update += 300;
308 309
        ERROR3 ("YP %s on %s failed: %s", cmd, server->url, yp->error_msg);
        return -1;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
310
    }
311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328
    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
329
    }
330 331 332
    yp_update = 1;
    yp->remove = 1;
    yp->process = do_yp_add;
333

334
    return 0;
335 336
}

337 338

static unsigned do_yp_add (ypdata_t *yp, char *s, unsigned len)
339
{
340 341 342
    int ret;
    char *value;

343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366
    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);

367
    value = stats_get_value (yp->mount, "subtype");
368 369 370 371 372 373
    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);
374 375 376

    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",
377 378
                    yp->server_name, yp->server_genre, yp->cluster_password,
                    yp->server_desc, yp->url, yp->listen_url,
379
                    yp->server_type, yp->subtype, yp->bitrate, yp->audio_info);
380 381 382 383 384 385 386 387 388 389 390 391 392 393 394
    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)
{
Karl Heyes's avatar
Karl Heyes committed
395
    unsigned listeners = 0, max_listeners = 1;
396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414
    char *val, *artist, *title;
    int ret;

    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);
415 416
             add_yp_info(yp, song, YP_CURRENT_SONG);
             stats_event (yp->mount, "yp_currently_playing", song);
417 418 419 420 421 422 423 424 425 426 427 428
             free (song);
         }
    }
    free (artist);
    free (title);

    val = (char *)stats_get_value (yp->mount, "listeners");
    if (val)
    {
        listeners = atoi (val);
        free (val);
    }
Karl Heyes's avatar
Karl Heyes committed
429 430
    val = stats_get_value (yp->mount, "max_listeners");
    if (val == NULL || strcmp (val, "unlimited") == 0)
431
    {
Karl Heyes's avatar
Karl Heyes committed
432 433
        free (val);
        max_listeners = client_limit;
434
    }
Karl Heyes's avatar
Karl Heyes committed
435 436 437
    else
        max_listeners = atoi (val);

438 439 440
    val = stats_get_value (yp->mount, "subtype");
    if (val)
    {
441
        add_yp_info (yp, val, YP_SUBTYPE);
442 443
        free (val);
    }
444 445

    ret = snprintf (s, len, "action=touch&sid=%s&st=%s"
Karl Heyes's avatar
Karl Heyes committed
446
            "&listeners=%u&max_listeners=%u&stype=%s\r\n",
447
            yp->sid, yp->current_song, listeners, max_listeners, yp->subtype);
448 449 450 451 452 453

    if (ret >= (signed)len)
        return ret+1; /* space required for above text and nul*/

    send_to_yp ("touch", yp, s);
    return 0;
454
}
455

456 457 458


static void process_ypdata (struct yp_server *server, ypdata_t *yp)
459
{
460 461
    unsigned len = 512;
    char *s = NULL, *tmp;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
462

463 464 465
    if (now < yp->next_update)
        return;
    yp->next_update = now + yp->touch_interval;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
466

467 468 469 470 471 472 473
    /* 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
474

475 476 477 478 479 480
        if (yp->release)
        {
            yp->process = do_yp_remove;
            yp->next_update = 0;
        }

481 482 483 484 485
        ret = yp->process (yp, s, len);
        if (ret == 0)
        {
           free (s);
           return;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
486
        }
487
        len = ret;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
488
    }
489
}
490 491 492


static void yp_process_server (struct yp_server *server)
493
{
494 495 496 497 498 499 500 501 502 503 504 505 506 507
    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;
    }
}



508
static ypdata_t *create_yp_entry (const char *mount)
509 510
{
    ypdata_t *yp;
511
    char *s;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
512

513 514 515 516 517 518
    yp = calloc (1, sizeof (ypdata_t));
    do
    {
        unsigned len = 512;
        int ret;
        char *url;
519
        mount_proxy *mountproxy = NULL;
520 521 522 523
        ice_config_t *config;

        if (yp == NULL)
            break;
524
        yp->mount = strdup (mount);
525 526 527 528 529 530 531 532 533
        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 ("");
534
        yp->subtype = strdup ("");
535 536 537 538 539 540
        yp->process = do_yp_add;

        url = malloc (len);
        if (url == NULL)
            break;
        config = config_get_config();
541
        ret = snprintf (url, len, "http://%s:%d%s", config->hostname, config->port, mount);
542
        if (ret >= (signed)len)
543
        {
544 545
            s = realloc (url, ++ret);
            if (s) url = s;
546
            snprintf (url, ret, "http://%s:%d%s", config->hostname, config->port, mount);
547
        }
548

549
        mountproxy = config_find_mount (config, mount);
550
        if (mountproxy && mountproxy->cluster_password)
551
            add_yp_info (yp, mountproxy->cluster_password, YP_CLUSTER_PASSWORD);
552
        config_release_config();
553

554 555 556 557 558 559 560 561 562 563 564 565 566 567
        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 */
568
static void check_servers (void)
569
{
570 571
    struct yp_server *server = (struct yp_server *)active_yps,
                     **server_p = (struct yp_server **)&active_yps;
572 573 574 575 576 577 578 579 580 581

    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);
582
            continue;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
583
        }
584 585 586 587 588 589 590 591
        server_p = &server->next;
        server = server->next;
    }
    /* add new server entries */
    while (pending_yps)
    {
        avl_node *node;

592
        server = (struct yp_server *)pending_yps;
593 594 595
        pending_yps = server->next;

        DEBUG1("Add pending yps %s", server->url);
596
        server->next = (struct yp_server *)active_yps;
597 598 599 600 601 602 603 604 605 606
        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;
607
            if (source->yp_public && (yp = create_yp_entry (source->mount)) != NULL)
608 609 610 611 612 613
            {
                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
614
            }
615
            node = avl_get_next (node);
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
616
        }
617
        avl_tree_unlock (global.source_tree);
618
    }
619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638
}


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
639
    }
640 641 642 643
    yp->next = current;
    DEBUG2 ("%u YP entries added to %s", count, server->url);
}

644

645 646 647
static void delete_marked_yp (struct yp_server *server)
{
    ypdata_t *yp = server->mounts, **prev = &server->mounts;
648

649 650 651 652 653 654 655 656 657 658 659 660 661 662
    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;
    }
663
}
664 665 666


static void *yp_update_thread(void *arg)
667
{
668 669 670 671 672 673 674 675 676 677 678
    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);
679
        server = (struct yp_server *)active_yps;
680 681 682 683 684
        while (server)
        {
            /* DEBUG1 ("trying %s", server->url); */
            yp_process_server (server);
            server = server->next;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
685
        }
686 687 688 689 690 691 692
        thread_rwlock_unlock (&yp_lock);

        /* update the local YP structure */
        if (yp_update)
        {
            thread_rwlock_wlock (&yp_lock);
            check_servers ();
693
            server = (struct yp_server *)active_yps;
694 695 696 697 698 699
            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
700
            }
701 702
            yp_update = 0;
            thread_rwlock_unlock (&yp_lock);
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
703 704
        }
    }
705 706 707 708 709
    thread_rwlock_destroy (&yp_lock);
    thread_mutex_destroy (&yp_pending_lock);
    /* free server and ypdata left */
    while (active_yps)
    {
710
        struct yp_server *server = (struct yp_server *)active_yps;
711 712 713
        active_yps = server->next;
        destroy_yp_server (server);
    }
714

715
    return NULL;
716
}
717

718 719 720


static void yp_destroy_ypdata(ypdata_t *ypdata)
721
{
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
722
    if (ypdata) {
723 724 725 726 727
        if (ypdata->mount) {
            free (ypdata->mount);
        }
        if (ypdata->url) {
            free (ypdata->url);
728
        }
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755
        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);
        }
756 757 758
        if (ypdata->audio_info) {
            free(ypdata->audio_info);
        }
759
        free (ypdata->subtype);
760 761
        free (ypdata->error_msg);
        free (ypdata);
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
762
    }
763
}
764

765
static void add_yp_info (ypdata_t *yp, void *info, int type)
766 767
{
    char *escaped;
768 769

    if (!info)
770
        return;
771

772 773 774 775
    escaped = util_url_escape(info);
    if (escaped == NULL)
        return;

776 777
    switch (type)
    {
778
        case YP_SERVER_NAME:
779 780
            free (yp->server_name);
            yp->server_name = escaped;
781
            break;
782
        case YP_SERVER_DESC:
783 784
            free (yp->server_desc);
            yp->server_desc = escaped;
785
            break;
786
        case YP_SERVER_GENRE:
787 788
            free (yp->server_genre);
            yp->server_genre = escaped;
789
            break;
790
        case YP_SERVER_URL:
791 792
            free (yp->url);
            yp->url = escaped;
793
            break;
794
        case YP_BITRATE:
795 796
            free (yp->bitrate);
            yp->bitrate = escaped;
797
            break;
798
        case YP_AUDIO_INFO:
799 800
            free (yp->audio_info);
            yp->audio_info = escaped;
801
            break;
802
        case YP_SERVER_TYPE:
803 804
            free (yp->server_type);
            yp->server_type = escaped;
805
            break;
806
        case YP_CURRENT_SONG:
807 808
            free (yp->current_song);
            yp->current_song = escaped;
809
            break;
810
        case YP_CLUSTER_PASSWORD:
811 812
            free (yp->cluster_password);
            yp->cluster_password = escaped;
813
            break;
814
        case YP_SUBTYPE:
815 816
            free (yp->subtype);
            yp->subtype = escaped;
817
            break;
818 819
        default:
            free (escaped);
820 821 822 823 824
    }
}


/* Add YP entries to active servers */
825
void yp_add (const char *mount)
826 827 828 829 830 831 832 833
{
    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);
834
    server = (struct yp_server *)active_yps;
835 836 837
    while (server)
    {
        ypdata_t *yp;
838 839 840 841

        /* on-demand relays may already have a YP entry */
        yp = find_yp_mount (server->mounts, mount);
        if (yp == NULL)
842
        {
843 844 845 846 847 848 849 850 851 852 853 854
            /* add new ypdata to each servers pending yp */
            yp = create_yp_entry (mount);
            if (yp)
            {
                DEBUG2 ("Adding %s to %s", mount, server->url);
                yp->server = server;
                yp->touch_interval = server->touch_interval;
                yp->next = server->pending_mounts;
                yp->next_update = time(NULL) + 5;
                server->pending_mounts = yp;
                yp_update = 1;
            }
855
        }
856 857
        else
            DEBUG1 ("YP entry %s already exists", mount);
858 859 860 861 862 863 864 865 866 867 868
        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)
{
869
    struct yp_server *server = (struct yp_server *)active_yps;
870 871 872 873

    thread_rwlock_rlock (&yp_lock);
    while (server)
    {
874
        ypdata_t *yp = find_yp_mount (server->mounts, mount);
875 876
        if (yp)
        {
877 878
            DEBUG2 ("release %s on YP %s", mount, server->url);
            yp->release = 1;
879
            yp->next_update = 0;
880
        }
881
        server = server->next;
882
    }
883
    thread_rwlock_unlock (&yp_lock);
884
}
885 886 887 888 889 890


/* This is similar to yp_remove, but we force a touch
 * attempt */
void yp_touch (const char *mount)
{
891
    struct yp_server *server = (struct yp_server *)active_yps;
892
    time_t trigger;
893
    ypdata_t *search_list = NULL;
894 895 896 897

    thread_rwlock_rlock (&yp_lock);
    /* do update in 3 secs, give stats chance to update */
    trigger = time(NULL) + 3;
898 899 900
    if (server)
        search_list = server->mounts;

901 902
    while (server)
    {
903
        ypdata_t *yp = find_yp_mount (search_list, mount);
904 905
        if (yp)
        {
906
            /* we may of found old entries not purged yet, so skip them */
907
            if (yp->release != 0 || yp->remove != 0)
908 909 910 911
            {
                search_list = yp->next;
                continue;
            }
912 913 914 915 916
            /* only force if touch */
            if (yp->process == do_yp_touch)
                yp->next_update = trigger;
        }
        server = server->next;
917 918
        if (server)
            search_list = server->mounts;
919 920 921 922 923
    }
    thread_rwlock_unlock (&yp_lock);
}


924
void yp_shutdown (void)
925 926 927
{
    yp_running = 0;
    yp_update = 1;
928 929
    if (yp_thread)
        thread_join (yp_thread);
930
    curl_global_cleanup();
931 932
    free ((char*)server_version);
    server_version = NULL;
933
    INFO0 ("YP thread down");
934 935
}