cfgfile.c 61.1 KB
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/* 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).
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 * Copyright 2011,      Dave 'justdave' Miller <justdave@mozilla.com>.
 * Copyright 2011-2014, Thomas B. "dm8tbr" Ruecker <thomas@ruecker.fi>,
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 * Copyright 2011-2014, Philipp "ph3-der-loewe" Schafft <lion@lion.leolix.org>,
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 */

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#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
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#ifndef _WIN32
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#include <fnmatch.h>
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#endif
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#include <libxml/xmlmemory.h>
#include <libxml/parser.h>

#include "thread/thread.h"
#include "cfgfile.h"
#include "refbuf.h"
#include "client.h"
#include "logging.h" 
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#include "util.h" 
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#define CATMODULE "CONFIG"
#define CONFIG_DEFAULT_LOCATION "Earth"
#define CONFIG_DEFAULT_ADMIN "icemaster@localhost"
#define CONFIG_DEFAULT_CLIENT_LIMIT 256
#define CONFIG_DEFAULT_SOURCE_LIMIT 16
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#define CONFIG_DEFAULT_QUEUE_SIZE_LIMIT (500*1024)
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#define CONFIG_DEFAULT_BURST_SIZE (64*1024)
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#define CONFIG_DEFAULT_THREADPOOL_SIZE 4
#define CONFIG_DEFAULT_CLIENT_TIMEOUT 30
#define CONFIG_DEFAULT_HEADER_TIMEOUT 15
#define CONFIG_DEFAULT_SOURCE_TIMEOUT 10
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#define CONFIG_DEFAULT_MASTER_USERNAME "relay"
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#define CONFIG_DEFAULT_SHOUTCAST_MOUNT "/stream"
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#define CONFIG_DEFAULT_ICE_LOGIN 0
#define CONFIG_DEFAULT_FILESERVE 1
#define CONFIG_DEFAULT_TOUCH_FREQ 5
#define CONFIG_DEFAULT_HOSTNAME "localhost"
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#define CONFIG_DEFAULT_PLAYLIST_LOG NULL
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#define CONFIG_DEFAULT_ACCESS_LOG "access.log"
#define CONFIG_DEFAULT_ERROR_LOG "error.log"
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#define CONFIG_DEFAULT_LOG_LEVEL 3
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#define CONFIG_DEFAULT_CHROOT 0
#define CONFIG_DEFAULT_CHUID 0
#define CONFIG_DEFAULT_USER NULL
#define CONFIG_DEFAULT_GROUP NULL
#define CONFIG_MASTER_UPDATE_INTERVAL 120
#define CONFIG_YP_URL_TIMEOUT 10
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#define CONFIG_DEFAULT_CIPHER_LIST "ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:ECDHE-RSA-DES-CBC3-SHA:ECDHE-ECDSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:DES-CBC3-SHA:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA"
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#ifndef _WIN32
#define CONFIG_DEFAULT_BASE_DIR "/usr/local/icecast"
#define CONFIG_DEFAULT_LOG_DIR "/usr/local/icecast/logs"
#define CONFIG_DEFAULT_WEBROOT_DIR "/usr/local/icecast/webroot"
#define CONFIG_DEFAULT_ADMINROOT_DIR "/usr/local/icecast/admin"
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#define CONFIG_DEFAULT_NULL_FILE "/dev/null"
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#define MIMETYPESFILE "/etc/mime.types"
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#else
#define CONFIG_DEFAULT_BASE_DIR ".\\"
#define CONFIG_DEFAULT_LOG_DIR ".\\logs"
#define CONFIG_DEFAULT_WEBROOT_DIR ".\\webroot"
#define CONFIG_DEFAULT_ADMINROOT_DIR ".\\admin"
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#define CONFIG_DEFAULT_NULL_FILE "nul:"
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#define MIMETYPESFILE ".\\mime.types"
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#endif

static ice_config_t _current_configuration;
static ice_config_locks _locks;

static void _set_defaults(ice_config_t *c);
static void _parse_root(xmlDocPtr doc, xmlNodePtr node, ice_config_t *c);
static void _parse_limits(xmlDocPtr doc, xmlNodePtr node, ice_config_t *c);
static void _parse_directory(xmlDocPtr doc, xmlNodePtr node, ice_config_t *c);
static void _parse_paths(xmlDocPtr doc, xmlNodePtr node, ice_config_t *c);
static void _parse_logging(xmlDocPtr doc, xmlNodePtr node, ice_config_t *c);
static void _parse_security(xmlDocPtr doc, xmlNodePtr node, ice_config_t *c);
static void _parse_authentication(xmlDocPtr doc, xmlNodePtr node, 
        ice_config_t *c);
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static void _parse_http_headers(xmlDocPtr doc, xmlNodePtr node,
        ice_config_http_header_t **http_headers);
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static void _parse_relay(xmlDocPtr doc, xmlNodePtr node, ice_config_t *c);
static void _parse_mount(xmlDocPtr doc, xmlNodePtr node, ice_config_t *c);
static void _parse_listen_socket(xmlDocPtr doc, xmlNodePtr node, 
        ice_config_t *c);
static void _add_server(xmlDocPtr doc, xmlNodePtr node, ice_config_t *c);

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static void merge_mounts(mount_proxy * dst, mount_proxy * src);
static inline void _merge_mounts_all(ice_config_t *c);

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static void create_locks(void) {
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    thread_mutex_create(&_locks.relay_lock);
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    thread_rwlock_create(&_locks.config_lock);
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}

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static void release_locks(void) {
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    thread_mutex_destroy(&_locks.relay_lock);
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    thread_rwlock_destroy(&_locks.config_lock);
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}

void config_initialize(void) {
    create_locks();
}

void config_shutdown(void) {
    config_get_config();
    config_clear(&_current_configuration);
    config_release_config();
    release_locks();
}

void config_init_configuration(ice_config_t *configuration)
{
    memset(configuration, 0, sizeof(ice_config_t));
    _set_defaults(configuration);
}

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static void config_clear_http_header(ice_config_http_header_t *header) {
 ice_config_http_header_t *old;

 while (header) {
  xmlFree(header->name);
  xmlFree(header->value);
  old = header;
  header = header->next;
  free(old);
 }
}

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static inline ice_config_http_header_t * config_copy_http_header(ice_config_http_header_t *header) {
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    ice_config_http_header_t *ret = NULL;
    ice_config_http_header_t *cur = NULL;
    ice_config_http_header_t *old = NULL;

    while (header) {
        if (cur) {
            cur->next = calloc(1, sizeof(ice_config_http_header_t));
            old = cur;
            cur = cur->next;
        } else {
            ret = calloc(1, sizeof(ice_config_http_header_t));
            cur = ret;
        }

        if (!cur) return ret; /* TODO: do better error handling */

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        cur->type   = header->type;
        cur->name   = (char *)xmlCharStrdup(header->name);
        cur->value  = (char *)xmlCharStrdup(header->value);
        cur->status = header->status;
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        if (!cur->name || !cur->value) {
            if (cur->name) xmlFree(cur->name);
            if (cur->value) xmlFree(cur->value);
            if (old) {
                old->next = NULL;
            } else {
                ret = NULL;
            }
            free(cur);
            return ret;
        }

        header = header->next;
    }

    return ret;
}

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static void config_clear_mount (mount_proxy *mount)
{
    config_options_t *option;

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    if (mount->mountname)       xmlFree (mount->mountname);
    if (mount->username)        xmlFree (mount->username);
    if (mount->password)        xmlFree (mount->password);
    if (mount->dumpfile)        xmlFree (mount->dumpfile);
    if (mount->intro_filename)  xmlFree (mount->intro_filename);
    if (mount->on_connect)      xmlFree (mount->on_connect);
    if (mount->on_disconnect)   xmlFree (mount->on_disconnect);
    if (mount->fallback_mount)  xmlFree (mount->fallback_mount);
    if (mount->stream_name)     xmlFree (mount->stream_name);
    if (mount->stream_description)  xmlFree (mount->stream_description);
    if (mount->stream_url)      xmlFree (mount->stream_url);
    if (mount->stream_genre)    xmlFree (mount->stream_genre);
    if (mount->bitrate)         xmlFree (mount->bitrate);
    if (mount->type)            xmlFree (mount->type);
    if (mount->charset)         xmlFree (mount->charset);
    if (mount->cluster_password)    xmlFree (mount->cluster_password);

    if (mount->auth_type)       xmlFree (mount->auth_type);
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    option = mount->auth_options;
    while (option)
    {
        config_options_t *nextopt = option->next;
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        if (option->name)   xmlFree (option->name);
        if (option->value)  xmlFree (option->value);
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        free (option);
        option = nextopt;
    }
    auth_release (mount->auth);
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    config_clear_http_header(mount->http_headers);
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    free (mount);
}

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listener_t *config_clear_listener (listener_t *listener)
{
    listener_t *next = NULL;
    if (listener)
    {
        next = listener->next;
        if (listener->bind_address)     xmlFree (listener->bind_address);
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        if (listener->shoutcast_mount)  xmlFree (listener->shoutcast_mount);
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        free (listener);
    }
    return next;
}
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void config_clear(ice_config_t *c)
{
    ice_config_dir_t *dirnode, *nextdirnode;
    relay_server *relay, *nextrelay;
    mount_proxy *mount, *nextmount;
    aliases *alias, *nextalias;
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#ifdef USE_YP
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    int i;
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#endif
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    free(c->config_filename);
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    xmlFree (c->server_id);
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    if (c->location) xmlFree(c->location);
    if (c->admin) xmlFree(c->admin);
    if (c->source_password) xmlFree(c->source_password);
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    if (c->admin_username)
        xmlFree(c->admin_username);
    if (c->admin_password)
        xmlFree(c->admin_password);
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    if (c->relay_username)
        xmlFree(c->relay_username);
    if (c->relay_password)
        xmlFree(c->relay_password);
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    if (c->hostname) xmlFree(c->hostname);
    if (c->base_dir) xmlFree(c->base_dir);
    if (c->log_dir) xmlFree(c->log_dir);
    if (c->webroot_dir) xmlFree(c->webroot_dir);
    if (c->adminroot_dir) xmlFree(c->adminroot_dir);
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    if (c->cert_file) xmlFree(c->cert_file);
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    if (c->cipher_list) xmlFree(c->cipher_list);
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    if (c->pidfile)
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        xmlFree(c->pidfile);
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    if (c->banfile) xmlFree(c->banfile);
    if (c->allowfile) xmlFree(c->allowfile);
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    if (c->playlist_log) xmlFree(c->playlist_log);
    if (c->access_log) xmlFree(c->access_log);
    if (c->error_log) xmlFree(c->error_log);
    if (c->shoutcast_mount) xmlFree(c->shoutcast_mount);
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    if (c->master_server) xmlFree(c->master_server);
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    if (c->master_username) xmlFree(c->master_username);
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    if (c->master_password) xmlFree(c->master_password);
    if (c->user) xmlFree(c->user);
    if (c->group) xmlFree(c->group);
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    if (c->mimetypes_fn) xmlFree (c->mimetypes_fn);
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    while ((c->listen_sock = config_clear_listener (c->listen_sock)))
        ;

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    thread_mutex_lock(&(_locks.relay_lock));
    relay = c->relay;
    while(relay) {
        nextrelay = relay->next;
        xmlFree(relay->server);
        xmlFree(relay->mount);
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        xmlFree(relay->localmount);
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        free(relay);
        relay = nextrelay;
    }
    thread_mutex_unlock(&(_locks.relay_lock));

    mount = c->mounts;
    while(mount) {
        nextmount = mount->next;
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        config_clear_mount (mount);
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        mount = nextmount;
    }

    alias = c->aliases;
    while(alias) {
        nextalias = alias->next;
        xmlFree(alias->source);
        xmlFree(alias->destination);
        xmlFree(alias->bind_address);
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        xmlFree(alias->vhost);
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        free(alias);
        alias = nextalias;
    }

    dirnode = c->dir_list;
    while(dirnode) {
        nextdirnode = dirnode->next;
        xmlFree(dirnode->host);
        free(dirnode);
        dirnode = nextdirnode;
    }
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#ifdef USE_YP
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    i = 0;
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    while (i < c->num_yp_directories)
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    {
        xmlFree (c->yp_url[i]);
        i++;
    }
#endif
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    config_clear_http_header(c->http_headers);

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    memset(c, 0, sizeof(ice_config_t));
}

int config_initial_parse_file(const char *filename)
{
    /* Since we're already pointing at it, we don't need to copy it in place */
    return config_parse_file(filename, &_current_configuration);
}

int config_parse_file(const char *filename, ice_config_t *configuration)
{
    xmlDocPtr doc;
    xmlNodePtr node;

    if (filename == NULL || strcmp(filename, "") == 0) return CONFIG_EINSANE;
    
    doc = xmlParseFile(filename);
    if (doc == NULL) {
        return CONFIG_EPARSE;
    }

    node = xmlDocGetRootElement(doc);
    if (node == NULL) {
        xmlFreeDoc(doc);
        return CONFIG_ENOROOT;
    }

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    if (xmlStrcmp (node->name, XMLSTR("icecast")) != 0) {
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        xmlFreeDoc(doc);
        return CONFIG_EBADROOT;
    }

    config_init_configuration(configuration);

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    configuration->config_filename = strdup (filename);
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    _parse_root(doc, node->xmlChildrenNode, configuration);

    xmlFreeDoc(doc);

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    _merge_mounts_all(configuration);

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    return 0;
}

int config_parse_cmdline(int arg, char **argv)
{
    return 0;
}

ice_config_locks *config_locks(void)
{
    return &_locks;
}

void config_release_config(void)
{
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    thread_rwlock_unlock(&(_locks.config_lock));
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}

ice_config_t *config_get_config(void)
{
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    thread_rwlock_rlock(&(_locks.config_lock));
    return &_current_configuration;
}

ice_config_t *config_grab_config(void)
{
    thread_rwlock_wlock(&(_locks.config_lock));
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    return &_current_configuration;
}

/* MUST be called with the lock held! */
void config_set_config(ice_config_t *config) {
    memcpy(&_current_configuration, config, sizeof(ice_config_t));
}

ice_config_t *config_get_config_unlocked(void)
{
    return &_current_configuration;
}

static void _set_defaults(ice_config_t *configuration)
{
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    configuration->location = (char *)xmlCharStrdup (CONFIG_DEFAULT_LOCATION);
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    configuration->server_id = (char *)xmlCharStrdup (ICECAST_VERSION_STRING);
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    configuration->admin = (char *)xmlCharStrdup (CONFIG_DEFAULT_ADMIN);
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    configuration->client_limit = CONFIG_DEFAULT_CLIENT_LIMIT;
    configuration->source_limit = CONFIG_DEFAULT_SOURCE_LIMIT;
    configuration->queue_size_limit = CONFIG_DEFAULT_QUEUE_SIZE_LIMIT;
    configuration->client_timeout = CONFIG_DEFAULT_CLIENT_TIMEOUT;
    configuration->header_timeout = CONFIG_DEFAULT_HEADER_TIMEOUT;
    configuration->source_timeout = CONFIG_DEFAULT_SOURCE_TIMEOUT;
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    configuration->source_password = NULL;
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    configuration->shoutcast_mount = (char *)xmlCharStrdup (CONFIG_DEFAULT_SHOUTCAST_MOUNT);
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    configuration->ice_login = CONFIG_DEFAULT_ICE_LOGIN;
    configuration->fileserve = CONFIG_DEFAULT_FILESERVE;
    configuration->touch_interval = CONFIG_DEFAULT_TOUCH_FREQ;
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    configuration->on_demand = 0;
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    configuration->dir_list = NULL;
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    configuration->hostname = (char *)xmlCharStrdup (CONFIG_DEFAULT_HOSTNAME);
    configuration->mimetypes_fn = (char *)xmlCharStrdup (MIMETYPESFILE);
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    configuration->master_server = NULL;
    configuration->master_server_port = 0;
    configuration->master_update_interval = CONFIG_MASTER_UPDATE_INTERVAL;
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    configuration->master_username = (char *)xmlCharStrdup (CONFIG_DEFAULT_MASTER_USERNAME);
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    configuration->master_password = NULL;
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    configuration->base_dir = (char *)xmlCharStrdup (CONFIG_DEFAULT_BASE_DIR);
    configuration->log_dir = (char *)xmlCharStrdup (CONFIG_DEFAULT_LOG_DIR);
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    configuration->cipher_list = (char *)xmlCharStrdup (CONFIG_DEFAULT_CIPHER_LIST);
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    configuration->null_device = (char *)xmlCharStrdup (CONFIG_DEFAULT_NULL_FILE);
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    configuration->webroot_dir = (char *)xmlCharStrdup (CONFIG_DEFAULT_WEBROOT_DIR);
    configuration->adminroot_dir = (char *)xmlCharStrdup (CONFIG_DEFAULT_ADMINROOT_DIR);
    configuration->playlist_log = (char *)xmlCharStrdup (CONFIG_DEFAULT_PLAYLIST_LOG);
    configuration->access_log = (char *)xmlCharStrdup (CONFIG_DEFAULT_ACCESS_LOG);
    configuration->error_log = (char *)xmlCharStrdup (CONFIG_DEFAULT_ERROR_LOG);
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    configuration->loglevel = CONFIG_DEFAULT_LOG_LEVEL;
    configuration->chroot = CONFIG_DEFAULT_CHROOT;
    configuration->chuid = CONFIG_DEFAULT_CHUID;
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    configuration->user = NULL;
    configuration->group = NULL;
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    configuration->num_yp_directories = 0;
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    configuration->relay_username = (char *)xmlCharStrdup (CONFIG_DEFAULT_MASTER_USERNAME);
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    configuration->relay_password = NULL;
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    /* default to a typical prebuffer size used by clients */
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    configuration->burst_size = CONFIG_DEFAULT_BURST_SIZE;
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}

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static inline void __check_hostname(ice_config_t *configuration) {
    char *p;

    // ensure we have a non-NULL buffer:
    if (!configuration->hostname)
        configuration->hostname = (char *)xmlCharStrdup (CONFIG_DEFAULT_HOSTNAME);

    // convert to lower case:
    for (p = configuration->hostname; *p; p++)
        if ( *p >= 'A' && *p <= 'Z' )
            *p += 'a' - 'A';

    configuration->sane_hostname = 0;
    switch (util_hostcheck(configuration->hostname)) {
        case HOSTCHECK_SANE:
            configuration->sane_hostname = 1;
        break;
        case HOSTCHECK_ERROR:
            ICECAST_LOG_ERROR("Can not check hostname \"%s\".", configuration->hostname);
        break;
        case HOSTCHECK_NOT_FQDN:
            ICECAST_LOG_WARN("Warning, <hostname> seems not to be set to a fully qualified fomain name (FQDN). This may cause problems, e.g. with YP directory listings.");
        break;
        case HOSTCHECK_IS_LOCALHOST:
            ICECAST_LOG_WARN("Warning, <hostname> not configured, using default value \"%s\". This will cause problems, e.g. with YP directory listings.", CONFIG_DEFAULT_HOSTNAME);
        break;
        case HOSTCHECK_IS_IPV4:
            ICECAST_LOG_WARN("Warning, <hostname> seems to be set to an IPv4 address. This may cause problems, e.g. with YP directory listings.");
        break;
        case HOSTCHECK_IS_IPV6:
            ICECAST_LOG_WARN("Warning, <hostname> seems to be set to an IPv6 address. This may cause problems, e.g. with YP directory listings.");
        break;
        case HOSTCHECK_BADCHAR:
            ICECAST_LOG_WARN("Warning, <hostname> configured to unusual characters. This may cause problems, e.g. with YP directory listings.");
        break;
    }
}

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static void _parse_root(xmlDocPtr doc, xmlNodePtr node, 
        ice_config_t *configuration)
{
    char *tmp;

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    configuration->listen_sock = calloc (1, sizeof (*configuration->listen_sock));
    configuration->listen_sock->port = 8000;
    configuration->listen_sock_count = 1;

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    do {
        if (node == NULL) break;
        if (xmlIsBlankNode(node)) continue;

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        if (xmlStrcmp (node->name, XMLSTR("location")) == 0) {
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            if (configuration->location) xmlFree(configuration->location);
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            configuration->location = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("admin")) == 0) {
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            if (configuration->admin) xmlFree(configuration->admin);
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            configuration->admin = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("server-id")) == 0) {
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            xmlFree (configuration->server_id);
            configuration->server_id = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
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            ICECAST_LOG_WARN("Warning, server version string override detected. This may lead to unexpected client software behavior.");
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        } else if(xmlStrcmp (node->name, XMLSTR("authentication")) == 0) {
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            _parse_authentication(doc, node->xmlChildrenNode, configuration);
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        } else if (xmlStrcmp (node->name, XMLSTR("source-password")) == 0) {
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            /* TODO: This is the backwards-compatibility location */
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            ICECAST_LOG_WARN("<source-password> defined outside <authentication>. This is deprecated and will be removed in version 2.5.");
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            if (configuration->source_password) xmlFree(configuration->source_password);
            configuration->source_password = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("icelogin")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            configuration->ice_login = atoi(tmp);
            if (tmp) xmlFree(tmp);
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        } else if (xmlStrcmp (node->name, XMLSTR("fileserve")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            configuration->fileserve = atoi(tmp);
            if (tmp) xmlFree(tmp);
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        } else if (xmlStrcmp (node->name, XMLSTR("relays-on-demand")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            configuration->on_demand = atoi(tmp);
            if (tmp) xmlFree(tmp);
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        } else if (xmlStrcmp (node->name, XMLSTR("hostname")) == 0) {
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            if (configuration->hostname) xmlFree(configuration->hostname);
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            configuration->hostname = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("mime-types")) == 0) {
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            if (configuration->mimetypes_fn) xmlFree(configuration->mimetypes_fn);
            configuration->mimetypes_fn = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("listen-socket")) == 0) {
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            _parse_listen_socket(doc, node->xmlChildrenNode, configuration);
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        } else if (xmlStrcmp (node->name, XMLSTR("port")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
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            if (tmp) {
                configuration->port = atoi(tmp);
                configuration->listen_sock->port = atoi(tmp);
                xmlFree(tmp);
            } else {
                ICECAST_LOG_WARN("<port> must not be empty.");
            }
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        } else if (xmlStrcmp (node->name, XMLSTR("bind-address")) == 0) {
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            if (configuration->listen_sock->bind_address) 
                xmlFree(configuration->listen_sock->bind_address);
            configuration->listen_sock->bind_address = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("master-server")) == 0) {
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            if (configuration->master_server) xmlFree(configuration->master_server);
            configuration->master_server = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("master-username")) == 0) {
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            if (configuration->master_username) xmlFree(configuration->master_username);
            configuration->master_username = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("master-password")) == 0) {
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            if (configuration->master_password) xmlFree(configuration->master_password);
            configuration->master_password = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("master-server-port")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            configuration->master_server_port = atoi(tmp);
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            xmlFree (tmp);
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        } else if (xmlStrcmp (node->name, XMLSTR("master-update-interval")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            configuration->master_update_interval = atoi(tmp);
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            xmlFree (tmp);
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        } else if (xmlStrcmp (node->name, XMLSTR("shoutcast-mount")) == 0) {
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            if (configuration->shoutcast_mount) xmlFree(configuration->shoutcast_mount);
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            configuration->shoutcast_mount = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("limits")) == 0) {
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            _parse_limits(doc, node->xmlChildrenNode, configuration);
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        } else if (xmlStrcmp (node->name, XMLSTR("http-headers")) == 0) {
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            _parse_http_headers(doc, node->xmlChildrenNode, &(configuration->http_headers));
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        } else if (xmlStrcmp (node->name, XMLSTR("relay")) == 0) {
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            _parse_relay(doc, node->xmlChildrenNode, configuration);
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        } else if (xmlStrcmp (node->name, XMLSTR("mount")) == 0) {
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            _parse_mount(doc, node, configuration);
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        } else if (xmlStrcmp (node->name, XMLSTR("directory")) == 0) {
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            _parse_directory(doc, node->xmlChildrenNode, configuration);
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        } else if (xmlStrcmp (node->name, XMLSTR("paths")) == 0) {
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            _parse_paths(doc, node->xmlChildrenNode, configuration);
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        } else if (xmlStrcmp (node->name, XMLSTR("logging")) == 0) {
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            _parse_logging(doc, node->xmlChildrenNode, configuration);
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        } else if (xmlStrcmp (node->name, XMLSTR("security")) == 0) {
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            _parse_security(doc, node->xmlChildrenNode, configuration);
        }
    } while ((node = node->next));
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    /* drop the first listening socket details if more than one is defined, as we only
     * have port or listen-socket not both */
    if (configuration->listen_sock_count > 1)
    {
        configuration->listen_sock = config_clear_listener (configuration->listen_sock);
        configuration->listen_sock_count--;
    }
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    if (configuration->port == 0)
        configuration->port = 8000;
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   /* issue some warnings on bad configurations */
   if (!configuration->fileserve)
       ICECAST_LOG_WARN("Warning, serving of static files has been disabled in the config, this will also affect files used by the web interface (stylesheets, images).");

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  __check_hostname(configuration);
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  if (!configuration->location || strcmp(configuration->location, CONFIG_DEFAULT_LOCATION) == 0) {
      ICECAST_LOG_WARN("Warning, <location> not configured, using default value \"%s\".", CONFIG_DEFAULT_LOCATION);
      if (!configuration->location)
          configuration->location = (char *)xmlCharStrdup (CONFIG_DEFAULT_LOCATION);
  }

  if (!configuration->admin || strcmp(configuration->admin, CONFIG_DEFAULT_ADMIN) == 0) {
      ICECAST_LOG_WARN("Warning, <admin> contact not configured, using default value \"%s\".", CONFIG_DEFAULT_ADMIN);
      if (!configuration->admin)
          configuration->admin = (char *)xmlCharStrdup (CONFIG_DEFAULT_ADMIN);
  }
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}

static void _parse_limits(xmlDocPtr doc, xmlNodePtr node, 
        ice_config_t *configuration)
{
    char *tmp;

    do {
        if (node == NULL) break;
        if (xmlIsBlankNode(node)) continue;

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        if (xmlStrcmp (node->name, XMLSTR("clients")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            configuration->client_limit = atoi(tmp);
            if (tmp) xmlFree(tmp);
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        } else if (xmlStrcmp (node->name, XMLSTR("sources")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            configuration->source_limit = atoi(tmp);
            if (tmp) xmlFree(tmp);
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        } else if (xmlStrcmp (node->name, XMLSTR("queue-size")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            configuration->queue_size_limit = atoi(tmp);
            if (tmp) xmlFree(tmp);
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        } else if (xmlStrcmp (node->name, XMLSTR("threadpool")) == 0) {
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            ICECAST_LOG_WARN("<threadpool> deprecated and will be removed in version 2.5.");
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        } else if (xmlStrcmp (node->name, XMLSTR("client-timeout")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            configuration->client_timeout = atoi(tmp);
            if (tmp) xmlFree(tmp);
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        } else if (xmlStrcmp (node->name, XMLSTR("header-timeout")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            configuration->header_timeout = atoi(tmp);
            if (tmp) xmlFree(tmp);
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        } else if (xmlStrcmp (node->name, XMLSTR("source-timeout")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            configuration->source_timeout = atoi(tmp);
            if (tmp) xmlFree(tmp);
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        } else if (xmlStrcmp (node->name, XMLSTR("burst-on-connect")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
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            if (atoi(tmp) == 0)
                configuration->burst_size = 0;
            if (tmp) xmlFree(tmp);
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        } else if (xmlStrcmp (node->name, XMLSTR("burst-size")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            configuration->burst_size = atoi(tmp);
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            if (tmp) xmlFree(tmp);
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        }
    } while ((node = node->next));
}

static void _parse_mount(xmlDocPtr doc, xmlNodePtr node, 
        ice_config_t *configuration)
{
    char *tmp;
    mount_proxy *mount = calloc(1, sizeof(mount_proxy));
    mount_proxy *current = configuration->mounts;
    mount_proxy *last=NULL;
    
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    /* default <mount> settings */
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    mount->mounttype = MOUNT_TYPE_NORMAL;
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    mount->max_listeners = -1;
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    mount->burst_size = -1;
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    mount->mp3_meta_interval = -1;
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    mount->yp_public = -1;
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    mount->next = NULL;

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    tmp = (char *)xmlGetProp(node, XMLSTR("type"));
    if (tmp) {
        if (strcmp(tmp, "normal") == 0) {
	    mount->mounttype = MOUNT_TYPE_NORMAL;
	}
	else if (strcmp(tmp, "default") == 0) {
	    mount->mounttype = MOUNT_TYPE_DEFAULT;
	}
	else {
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	    ICECAST_LOG_WARN("Unknown mountpoint type: %s", tmp);
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            config_clear_mount (mount);
            return;
	}
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	xmlFree(tmp);
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    }

    node = node->xmlChildrenNode;

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    do {
        if (node == NULL) break;
        if (xmlIsBlankNode(node)) continue;

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        if (xmlStrcmp (node->name, XMLSTR("mount-name")) == 0) {
            mount->mountname = (char *)xmlNodeListGetString (doc, node->xmlChildrenNode, 1);
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        }
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        else if (xmlStrcmp (node->name, XMLSTR("username")) == 0) {
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            mount->username = (char *)xmlNodeListGetString(
                    doc, node->xmlChildrenNode, 1);
        }
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        else if (xmlStrcmp (node->name, XMLSTR("password")) == 0) {
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            mount->password = (char *)xmlNodeListGetString(
                    doc, node->xmlChildrenNode, 1);
        }
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        else if (xmlStrcmp (node->name, XMLSTR("dump-file")) == 0) {
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            mount->dumpfile = (char *)xmlNodeListGetString(
                    doc, node->xmlChildrenNode, 1);
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        }
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        else if (xmlStrcmp (node->name, XMLSTR("intro")) == 0) {
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            mount->intro_filename = (char *)xmlNodeListGetString(
                    doc, node->xmlChildrenNode, 1);
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        }
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        else if (xmlStrcmp (node->name, XMLSTR("fallback-mount")) == 0) {
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            mount->fallback_mount = (char *)xmlNodeListGetString(
                    doc, node->xmlChildrenNode, 1);
        }
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        else if (xmlStrcmp (node->name, XMLSTR("fallback-when-full")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->fallback_when_full = atoi(tmp);
            if(tmp) xmlFree(tmp);
        }
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        else if (xmlStrcmp (node->name, XMLSTR("max-listeners")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->max_listeners = atoi(tmp);
            if(tmp) xmlFree(tmp);
        }
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        else if (xmlStrcmp (node->name, XMLSTR("charset")) == 0) {
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            mount->charset = (char *)xmlNodeListGetString(doc,
                    node->xmlChildrenNode, 1);
        }
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        else if (xmlStrcmp (node->name, XMLSTR("mp3-metadata-interval")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->mp3_meta_interval = atoi(tmp);
            if(tmp) xmlFree(tmp);
        }
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        else if (xmlStrcmp (node->name, XMLSTR("fallback-override")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->fallback_override = atoi(tmp);
            if(tmp) xmlFree(tmp);
        }
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        else if (xmlStrcmp (node->name, XMLSTR("no-mount")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->no_mount = atoi(tmp);
            if(tmp) xmlFree(tmp);
        }
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        else if (xmlStrcmp (node->name, XMLSTR("no-yp")) == 0) {
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            ICECAST_LOG_WARN("<no-yp> defined. Please use <public>. This is deprecated and will be removed in version 2.5.");
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
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            mount->yp_public = atoi(tmp) == 0 ? -1 : 0;
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            if(tmp) xmlFree(tmp);
        }
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        else if (xmlStrcmp (node->name, XMLSTR("hidden")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->hidden = atoi(tmp);
            if(tmp) xmlFree(tmp);
        }
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        else if (xmlStrcmp (node->name, XMLSTR("authentication")) == 0) {
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            mount->auth = auth_get_authenticator (node);
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        }
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        else if (xmlStrcmp (node->name, XMLSTR("on-connect")) == 0) {
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            mount->on_connect = (char *)xmlNodeListGetString(
                    doc, node->xmlChildrenNode, 1);
        }
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        else if (xmlStrcmp (node->name, XMLSTR("on-disconnect")) == 0) {
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            mount->on_disconnect = (char *)xmlNodeListGetString(
                    doc, node->xmlChildrenNode, 1);
        }
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        else if (xmlStrcmp (node->name, XMLSTR("max-listener-duration")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->max_listener_duration = atoi(tmp);
            if(tmp) xmlFree(tmp);
        }
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        else if (xmlStrcmp (node->name, XMLSTR("queue-size")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->queue_size_limit = atoi (tmp);
            if(tmp) xmlFree(tmp);
        }
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        else if (xmlStrcmp (node->name, XMLSTR("source-timeout")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            if (tmp)
            {
                mount->source_timeout = atoi (tmp);
                xmlFree(tmp);
            }
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        } else if (xmlStrcmp (node->name, XMLSTR("burst-size")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->burst_size = atoi(tmp);
            if (tmp) xmlFree(tmp);
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        } else if (xmlStrcmp (node->name, XMLSTR("cluster-password")) == 0) {
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            mount->cluster_password = (char *)xmlNodeListGetString(
                    doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("stream-name")) == 0) {
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            mount->stream_name = (char *)xmlNodeListGetString(
                    doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("stream-description")) == 0) {
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            mount->stream_description = (char *)xmlNodeListGetString(
                    doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("stream-url")) == 0) {
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            mount->stream_url = (char *)xmlNodeListGetString(
                    doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("genre")) == 0) {
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            mount->stream_genre = (char *)xmlNodeListGetString(
                    doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("bitrate")) == 0) {
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            mount->bitrate = (char *)xmlNodeListGetString(
                    doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("public")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->yp_public = atoi (tmp);
            if(tmp) xmlFree(tmp);
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        } else if (xmlStrcmp (node->name, XMLSTR("type")) == 0) {
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            mount->type = (char *)xmlNodeListGetString(
                    doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("subtype")) == 0) {
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            mount->subtype = (char *)xmlNodeListGetString(
                    doc, node->xmlChildrenNode, 1);
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        } else if (xmlStrcmp (node->name, XMLSTR("http-headers")) == 0) {
            _parse_http_headers(doc, node->xmlChildrenNode, &(mount->http_headers));
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        }
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    } while ((node = node->next));
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    /* make sure we have at least the mountpoint name */
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    if (mount->mountname == NULL && mount->mounttype != MOUNT_TYPE_DEFAULT)
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    {
        config_clear_mount (mount);
        return;
    }
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    else if (mount->mountname != NULL && mount->mounttype == MOUNT_TYPE_DEFAULT)
    {
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    	ICECAST_LOG_WARN("Default mount %s has mount-name set. This is not supported. Behavior may not be consistent.", mount->mountname);
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    }
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    if (mount->auth && mount->mountname) {
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        mount->auth->mount = strdup ((char *)mount->mountname);
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    } else if (mount->auth && mount->mounttype == MOUNT_TYPE_DEFAULT ) {
        mount->auth->mount = strdup ("(default mount)");
    }
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    while(current) {
        last = current;
        current = current->next;
    }

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    if (!mount->fallback_mount && (mount->fallback_when_full || mount->fallback_override))
    {
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        ICECAST_LOG_WARN("Config for mount %s contains fallback options but no fallback mount.", mount->mountname);
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    }

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    if(last)
        last->next = mount;
    else
        configuration->mounts = mount;
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}

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static void _parse_http_headers(xmlDocPtr doc, xmlNodePtr node, ice_config_http_header_t **http_headers) {
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    ice_config_http_header_t *header;
    ice_config_http_header_t *next;
    char *name = NULL;
    char *value = NULL;
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    char *tmp;
    int status;
    http_header_type type;
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    do {
        if (node == NULL) break;
        if (xmlIsBlankNode(node)) continue;
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        if (xmlStrcmp (node->name, XMLSTR("header")) != 0) continue;
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        if (!(name = (char *)xmlGetProp(node, XMLSTR("name")))) break;
        if (!(value = (char *)xmlGetProp(node, XMLSTR("value")))) break;

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        type = HTTP_HEADER_TYPE_STATIC; /* default */
        if ((tmp = (char *)xmlGetProp(node, XMLSTR("type")))) {
            if (strcmp(tmp, "static") == 0) {
                type = HTTP_HEADER_TYPE_STATIC;
            } else {
                ICECAST_LOG_WARN("Unknown type %s for HTTP Header %s", tmp, name);
                xmlFree(tmp);
                break;
            }
            xmlFree(tmp);
        }

        status = 0; /* default: any */
        if ((tmp = (char *)xmlGetProp(node, XMLSTR("status")))) {
            status = atoi(tmp);
            xmlFree(tmp);
        }

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        header = calloc(1, sizeof(ice_config_http_header_t));
        if (!header) break;
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        header->type = type;
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        header->name = name;
        header->value = value;
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        header->status = status;
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        name = NULL;
        value = NULL;

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        if (!*http_headers) {
            *http_headers = header;
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            continue;
        }
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        next = *http_headers;
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        while (next->next) next = next->next;
        next->next = header;
    } while ((node = node->next));
    /* in case we used break we may need to clean those up */
    if (name)
	xmlFree(name);
    if (value)
	xmlFree(value);
}
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static void _parse_relay(xmlDocPtr doc, xmlNodePtr node,
        ice_config_t *configuration)
{
    char *tmp;
    relay_server *relay = calloc(1, sizeof(relay_server));
    relay_server *current = configuration->relay;
    relay_server *last=NULL;
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    while(current) {
        last = current;
        current = current->next;
    }

    if(last)
        last->next = relay;
    else
        configuration->relay = relay;

    relay->next = NULL;
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    relay->mp3metadata = 1;
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    relay->on_demand = configuration->on_demand;
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    relay->server = (char *)xmlCharStrdup ("127.0.0.1");
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    relay->mount = (char *)xmlCharStrdup ("/");
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    do {
        if (node == NULL) break;
        if (xmlIsBlankNode(node)) continue;

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        if (xmlStrcmp (node->name, XMLSTR("server")) == 0) {
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            if (relay->server) xmlFree (relay->server);
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            relay->server = (char *)xmlNodeListGetString(
                    doc, node->xmlChildrenNode, 1);
        }
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        else if (xmlStrcmp (node->name, XMLSTR("port")) == 0) {
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            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
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            if (tmp) {
                relay->port = atoi(tmp);
                xmlFree(tmp);
            } else {
                ICECAST_LOG_WARN("<port> must not be empty.");
            }
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        }
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        else if (xmlStrcmp (node->