yp.c 25.4 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 73 74 75 76 77 78 79 80 81 82 83 84 85 86
    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;

    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;

87
volatile static struct yp_server *active_yps = NULL, *pending_yps = NULL;
88
static volatile int yp_update = 0;
89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155
static int yp_running;
static time_t now;
static thread_type *yp_thread;

static void *yp_update_thread(void *arg);
static void add_yp_info (ypdata_t *yp, char *stat_name, void *info, int type);
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);
        }
        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;
        }
    }
    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;

156
    server = (struct yp_server *)active_yps;
157 158 159 160 161 162
    while (server)
    {
        if (strcmp (server->url, url) == 0)
            return server;
        server = server->next;
    }
163
    server = (struct yp_server *)pending_yps;
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
    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 */
190
static ypdata_t *find_yp_mount (ypdata_t *mounts, const char *mount)
191
{
192
    ypdata_t *yp = mounts;
193 194 195 196 197 198 199 200 201
    while (yp)
    {
        if (strcmp (yp->mount, mount) == 0)
            break;
        yp = yp->next;
    }
    return yp;
}

202 203 204

void yp_recheck_config (ice_config_t *config)
{
205 206 207 208 209 210
    int i;
    struct yp_server *server;

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

211
    server = (struct yp_server *)active_yps;
212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232
    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];
233
            server->touch_interval = config->yp_touch_interval[i];
234 235 236 237 238 239 240 241 242 243 244 245 246 247 248
            server->curl = curl_easy_init();
            if (server->curl == NULL)
            {
                destroy_yp_server (server);
                break;
            }
            if (server->touch_interval < 30)
                server->touch_interval = 30;
            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]));
249
            server->next = (struct yp_server *)pending_yps;
250 251 252 253 254 255 256 257 258 259 260
            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;
261 262
}

263

264 265
void yp_initialize()
{
266
    ice_config_t *config = config_get_config();
267 268
    thread_rwlock_create (&yp_lock);
    thread_mutex_create (&yp_pending_lock);
269 270
    yp_recheck_config (config);
    config_release_config ();
271 272
    yp_thread = thread_create("YP Touch Thread", yp_update_thread,
                            (void *)NULL, THREAD_ATTACHED);
273
}
274 275 276 277 278



/* handler for curl, checks if successful handling occurred */
static int send_to_yp (const char *cmd, ypdata_t *yp, char *post)
279
{
280 281 282 283 284 285 286 287 288 289 290
    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;
291
        yp->next_update += 300;
292 293
        ERROR2 ("connection to %s failed with \"%s\"", server->url, server->curl_error);
        return -1;
294
    }
295 296
    if (yp->cmd_ok == 0)
    {
297 298
        if (yp->error_msg == NULL)
            yp->error_msg = strdup ("no response from server");
299
        yp->process = do_yp_add;
300
        yp->next_update += 300;
301 302
        ERROR3 ("YP %s on %s failed: %s", cmd, server->url, yp->error_msg);
        return -1;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
303
    }
304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321
    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
322
    }
323 324 325
    yp_update = 1;
    yp->remove = 1;
    yp->process = do_yp_add;
326

327
    return 0;
328 329
}

330 331

static unsigned do_yp_add (ypdata_t *yp, char *s, unsigned len)
332
{
333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393
    int ret = snprintf (s, len, "action=add&sn=%s&genre=%s&cpswd=%s&desc="
                    "%s&url=%s&listenurl=%s&type=%s&b=%s&%s\r\n",
                    yp->server_name, yp->server_genre, yp->cluster_password,
                    yp->server_desc, yp->url, yp->listen_url,
                    yp->server_type, yp->bitrate, yp->audio_info);
    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;

    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);
             add_yp_info(yp, "yp_currently_playing", song, YP_CURRENT_SONG);
             free (song);
         }
    }
    free (artist);
    free (title);

    val = (char *)stats_get_value (yp->mount, "listeners");
    if (val)
    {
        listeners = atoi (val);
        free (val);
    }
    ret = snprintf (s, len, "action=touch&sid=%s&st=%s&listeners=%u\r\n", 
            yp->sid, yp->current_song, listeners);

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

    send_to_yp ("touch", yp, s);
    return 0;
394
}
395

396 397 398


static void process_ypdata (struct yp_server *server, ypdata_t *yp)
399
{
400 401
    unsigned len = 512;
    char *s = NULL, *tmp;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
402

403 404 405
    if (now < yp->next_update)
        return;
    yp->next_update = now + yp->touch_interval;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
406

407 408 409 410 411 412 413
    /* 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
414

415 416 417 418 419 420
        if (yp->release)
        {
            yp->process = do_yp_remove;
            yp->next_update = 0;
        }

421 422 423 424 425
        ret = yp->process (yp, s, len);
        if (ret == 0)
        {
           free (s);
           return;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
426
        }
427
        len = ret;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
428
    }
429
}
430 431 432


static void yp_process_server (struct yp_server *server)
433
{
434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450
    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;
    }
}



static ypdata_t *create_yp_entry (source_t *source)
{
    ypdata_t *yp;
451
    char *s;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
452

453 454 455 456 457 458 459 460
    if (source->running == 0 || source->yp_public == 0)
        return NULL;
    yp = calloc (1, sizeof (ypdata_t));
    do
    {
        unsigned len = 512;
        int ret;
        char *url;
461
        mount_proxy *mountproxy = NULL;
462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482
        ice_config_t *config;

        if (yp == NULL)
            break;
        yp->mount = strdup (source->mount);
        yp->server_name = strdup ("");
        yp->server_desc = strdup ("");
        yp->server_genre = strdup ("");
        yp->bitrate = strdup ("");
        yp->server_desc = strdup ("");
        yp->server_type = strdup ("");
        yp->cluster_password = strdup ("");
        yp->url = strdup ("");
        yp->current_song = strdup ("");
        yp->audio_info = strdup ("");
        yp->process = do_yp_add;

        url = malloc (len);
        if (url == NULL)
            break;
        config = config_get_config();
483
        ret = snprintf (url, len, "http://%s:%d%s", config->hostname, config->port, source->mount);
484
        if (ret >= (signed)len)
485
        {
486 487
            s = realloc (url, ++ret);
            if (s) url = s;
488
            snprintf (url, ret, "http://%s:%d%s", config->hostname, config->port, source->mount);
489
        }
490 491 492 493 494 495 496 497 498 499 500 501

        mountproxy = config->mounts;
        while (mountproxy) {
            if (strcmp (mountproxy->mountname, source->mount) == 0) {
                if (mountproxy->cluster_password) {
                   add_yp_info (yp, "cluster_password", 
                       mountproxy->cluster_password, YP_CLUSTER_PASSWORD);
                }
                break;
            }
            mountproxy = mountproxy->next;
        }
502 503 504 505 506 507 508
        config_release_config();
        yp->listen_url = util_url_escape (url);
        free (url);
        if (yp->listen_url == NULL)
            break;

        /* ice-* is icecast, icy-* is shoutcast */
509
        add_yp_info (yp, "server_type", source->format->contenttype, YP_SERVER_TYPE);
510 511 512 513 514 515 516 517
        if ((s = httpp_getvar(source->parser, "ice-name"))) {
            add_yp_info (yp, "server_name", s, YP_SERVER_NAME);
        }
        if ((s = httpp_getvar(source->parser, "icy-name"))) {
            add_yp_info (yp, "server_name", s, YP_SERVER_NAME);
        }
        if ((s = httpp_getvar(source->parser, "ice-url"))) {
            add_yp_info(yp, "server_url", s, YP_SERVER_URL);
518
        }
519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551
        if ((s = httpp_getvar(source->parser, "icy-url"))) {
            add_yp_info(yp, "server_url", s, YP_SERVER_URL);
        }
        if ((s = httpp_getvar(source->parser, "ice-genre"))) {
            add_yp_info(yp, "genre", s, YP_SERVER_GENRE);
        }
        if ((s = httpp_getvar(source->parser, "icy-genre"))) {
            add_yp_info(yp, "genre", s, YP_SERVER_GENRE);
        }
        if ((s = httpp_getvar(source->parser, "ice-bitrate"))) {
            add_yp_info(yp, "bitrate", s, YP_BITRATE);
        }
        if ((s = httpp_getvar(source->parser, "icy-br"))) {
            add_yp_info(yp, "bitrate", s, YP_BITRATE);
        }
        if ((s = httpp_getvar(source->parser, "ice-description"))) {
            add_yp_info(yp, "server_description", s, YP_SERVER_DESC);
        }
        s = util_dict_urlencode (source->audio_info, '&');
        if (s)
            add_yp_info (yp, "audio_info", s, YP_AUDIO_INFO);
        free(s);
        return yp;
    } while (0);

    yp_destroy_ypdata (yp);
    return NULL;
}


/* Check for changes in the YP servers configured */
static void check_servers ()
{
552 553
    struct yp_server *server = (struct yp_server *)active_yps,
                     **server_p = (struct yp_server **)&active_yps;
554 555 556 557 558 559 560 561 562 563

    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);
564
            continue;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
565
        }
566 567 568 569 570 571 572 573
        server_p = &server->next;
        server = server->next;
    }
    /* add new server entries */
    while (pending_yps)
    {
        avl_node *node;

574
        server = (struct yp_server *)pending_yps;
575 576 577
        pending_yps = server->next;

        DEBUG1("Add pending yps %s", server->url);
578
        server->next = (struct yp_server *)active_yps;
579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595
        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;
            if ((yp = create_yp_entry (source)) != NULL)
            {
                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
596
            }
597
            node = avl_get_next (node);
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
598
        }
599
        avl_tree_unlock (global.source_tree);
600
    }
601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620
}


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
621
    }
622 623 624 625
    yp->next = current;
    DEBUG2 ("%u YP entries added to %s", count, server->url);
}

626

627 628 629
static void delete_marked_yp (struct yp_server *server)
{
    ypdata_t *yp = server->mounts, **prev = &server->mounts;
630

631 632 633 634 635 636 637 638 639 640 641 642 643 644
    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;
    }
645
}
646 647 648


static void *yp_update_thread(void *arg)
649
{
650 651 652 653 654 655 656 657 658 659 660
    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);
661
        server = (struct yp_server *)active_yps;
662 663 664 665 666
        while (server)
        {
            /* DEBUG1 ("trying %s", server->url); */
            yp_process_server (server);
            server = server->next;
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
667
        }
668 669 670 671 672 673 674
        thread_rwlock_unlock (&yp_lock);

        /* update the local YP structure */
        if (yp_update)
        {
            thread_rwlock_wlock (&yp_lock);
            check_servers ();
675
            server = (struct yp_server *)active_yps;
676 677 678 679 680 681
            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
682
            }
683 684
            yp_update = 0;
            thread_rwlock_unlock (&yp_lock);
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
685 686
        }
    }
687 688 689 690 691
    thread_rwlock_destroy (&yp_lock);
    thread_mutex_destroy (&yp_pending_lock);
    /* free server and ypdata left */
    while (active_yps)
    {
692
        struct yp_server *server = (struct yp_server *)active_yps;
693 694 695
        active_yps = server->next;
        destroy_yp_server (server);
    }
696

697
    return NULL;
698
}
699

700 701 702


static void yp_destroy_ypdata(ypdata_t *ypdata)
703
{
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
704
    if (ypdata) {
705 706 707 708 709
        if (ypdata->mount) {
            free (ypdata->mount);
        }
        if (ypdata->url) {
            free (ypdata->url);
710
        }
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737
        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);
        }
738 739 740
        if (ypdata->audio_info) {
            free(ypdata->audio_info);
        }
741 742
        free (ypdata->error_msg);
        free (ypdata);
Ed "oddsock" Zaleski's avatar
Ed "oddsock" Zaleski committed
743
    }
744
}
745

746
static void add_yp_info (ypdata_t *yp, char *stat_name, void *info, int type)
747 748
{
    char *escaped;
749 750

    if (!info)
751
        return;
752 753 754

    switch (type)
    {
755
        case YP_SERVER_NAME:
756 757 758 759 760 761 762 763 764
            escaped = util_url_escape(info);
            if (escaped)
            {
                if (yp->server_name)
                    free (yp->server_name);
                yp->server_name = escaped;
                stats_event (yp->mount, stat_name, (char *)info);
            }
            break;
765
        case YP_SERVER_DESC:
766 767 768 769 770 771 772 773 774
            escaped = util_url_escape(info);
            if (escaped)
            {
                if (yp->server_desc)
                    free (yp->server_desc);
                yp->server_desc = escaped;
                stats_event(yp->mount, stat_name, (char *)info);
            }
            break;
775
        case YP_SERVER_GENRE:
776 777 778 779 780 781 782 783 784
            escaped = util_url_escape(info);
            if (escaped)
            {
                if (yp->server_genre)
                    free (yp->server_genre);
                yp->server_genre = escaped;
                stats_event (yp->mount, stat_name, (char *)info);
            }
            break;
785
        case YP_SERVER_URL:
786 787 788 789 790 791 792 793 794
            escaped = util_url_escape(info);
            if (escaped)
            {
                if (yp->url)
                    free (yp->url);
                yp->url = escaped;
                stats_event (yp->mount, stat_name, (char *)info);
            }
            break;
795
        case YP_BITRATE:
796 797 798 799 800 801 802 803 804
            escaped = util_url_escape(info);
            if (escaped)
            {
                if (yp->bitrate)
                    free (yp->bitrate);
                yp->bitrate = escaped;
                stats_event (yp->mount, stat_name, (char *)info);
            }
            break;
805
        case YP_AUDIO_INFO:
806 807 808 809
            if (yp->audio_info)
                free (yp->audio_info);
            yp->audio_info = strdup (info);
            break;
810
        case YP_SERVER_TYPE:
811 812 813 814 815 816 817 818
            escaped = util_url_escape(info);
            if (escaped)
            {
                if (yp->server_type)
                    free (yp->server_type);
                yp->server_type = escaped;
            }
            break;
819
        case YP_CURRENT_SONG:
820 821 822 823 824 825 826 827 828
            escaped = util_url_escape(info);
            if (escaped)
            {
                if (yp->current_song)
                    free (yp->current_song);
                yp->current_song = escaped;
                stats_event (yp->mount, "yp_currently_playing", (char *)info);
            }
            break;
829 830 831 832 833 834 835 836 837
        case YP_CLUSTER_PASSWORD:
            escaped = util_url_escape(info);
            if (escaped)
            {
                if (yp->cluster_password)
                    free (yp->cluster_password);
                yp->cluster_password = escaped;
            }
            break;
838 839 840 841 842 843 844 845 846 847 848 849 850 851
    }
}


/* Add YP entries to active servers */
void yp_add (source_t *source)
{
    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);
852
    server = (struct yp_server *)active_yps;
853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877
    while (server)
    {
        ypdata_t *yp;
        /* add new ypdata to each servers pending yp */
        if ((yp = create_yp_entry (source)) != NULL)
        {
            DEBUG2 ("Adding %s to %s", source->mount, server->url);
            yp->server = server;
            yp->touch_interval = server->touch_interval;
            yp->next = server->pending_mounts;
            server->pending_mounts = yp;
            yp_update = 1;
        }
        server = server->next;
    }
    thread_mutex_unlock (&yp_pending_lock);
    thread_rwlock_unlock (&yp_lock);
    /* DEBUG1 ("Added %s to YP ", source->mount); */
}



/* Mark an existing entry in the YP list as to be marked for deletion */
void yp_remove (const char *mount)
{
878
    struct yp_server *server = (struct yp_server *)active_yps;
879 880 881 882

    thread_rwlock_rlock (&yp_lock);
    while (server)
    {
883
        ypdata_t *yp = find_yp_mount (server->mounts, mount);
884 885
        if (yp)
        {
886 887
            DEBUG2 ("release %s on YP %s", mount, server->url);
            yp->release = 1;
888
            yp->next_update = 0;
889
        }
890
        server = server->next;
891
    }
892
    thread_rwlock_unlock (&yp_lock);
893
}
894 895 896 897 898 899


/* This is similar to yp_remove, but we force a touch
 * attempt */
void yp_touch (const char *mount)
{
900
    struct yp_server *server = (struct yp_server *)active_yps;
901
    time_t trigger;
902
    ypdata_t *search_list = NULL;
903 904 905 906

    thread_rwlock_rlock (&yp_lock);
    /* do update in 3 secs, give stats chance to update */
    trigger = time(NULL) + 3;
907 908 909
    if (server)
        search_list = server->mounts;

910 911
    while (server)
    {
912
        ypdata_t *yp = find_yp_mount (search_list, mount);
913 914
        if (yp)
        {
915 916 917 918 919 920
            /* we may of found old entries not purged yet, so skip them */
            if (yp->release == 0 || yp->remove == 0)
            {
                search_list = yp->next;
                continue;
            }
921 922 923 924 925
            /* only force if touch */
            if (yp->process == do_yp_touch)
                yp->next_update = trigger;
        }
        server = server->next;
926 927
        if (server)
            search_list = server->mounts;
928 929 930 931 932 933 934 935 936
    }
    thread_rwlock_unlock (&yp_lock);
}


void yp_shutdown ()
{
    yp_running = 0;
    yp_update = 1;
937 938
    if (yp_thread)
        thread_join (yp_thread);
939
    curl_global_cleanup();
940
    INFO0 ("YP thread down");
941 942
}