icecast-server/src/cfgfile.c

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

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

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

#include "common/thread/thread.h"
#include "cfgfile.h"
#include "refbuf.h"
#include "client.h"
#include "logging.h"
#include "util.h"
#include "auth.h"
#include "event.h"
#include "tls.h"

/* for config_reread_config() */
#include "yp.h"
#include "fserve.h"
#include "stats.h"
#include "connection.h"

#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
#define CONFIG_DEFAULT_QUEUE_SIZE_LIMIT (500*1024)
#define CONFIG_DEFAULT_BURST_SIZE       (64*1024)
#define CONFIG_DEFAULT_THREADPOOL_SIZE  4
#define CONFIG_DEFAULT_CLIENT_TIMEOUT   30
#define CONFIG_DEFAULT_HEADER_TIMEOUT   15
#define CONFIG_DEFAULT_SOURCE_TIMEOUT   10
#define CONFIG_DEFAULT_MASTER_USERNAME  "relay"
#define CONFIG_DEFAULT_SHOUTCAST_MOUNT  "/stream"
#define CONFIG_DEFAULT_FILESERVE        1
#define CONFIG_DEFAULT_TOUCH_FREQ       5
#define CONFIG_DEFAULT_HOSTNAME         "localhost"
#define CONFIG_DEFAULT_PLAYLIST_LOG     NULL
#define CONFIG_DEFAULT_ACCESS_LOG       "access.log"
#define CONFIG_DEFAULT_ERROR_LOG        "error.log"
#define CONFIG_DEFAULT_LOG_LEVEL        ICECAST_LOGLEVEL_INFO
#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
#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"

#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"
#define CONFIG_DEFAULT_NULL_FILE        "/dev/null"
#define MIMETYPESFILE                   "/etc/mime.types"
#else
#define CONFIG_DEFAULT_BASE_DIR         ".\\"
#define CONFIG_DEFAULT_LOG_DIR          ".\\logs"
#define CONFIG_DEFAULT_WEBROOT_DIR      ".\\webroot"
#define CONFIG_DEFAULT_ADMINROOT_DIR    ".\\admin"
#define CONFIG_DEFAULT_NULL_FILE        "nul:"
#define MIMETYPESFILE                   ".\\mime.types"
#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,
                                  char                    **source_password);

static void _parse_http_headers(xmlDocPtr                   doc,
                                xmlNodePtr                  node,
                                ice_config_http_header_t  **http_headers);

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);
static void _parse_events(event_registration_t **events, xmlNodePtr node);

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

operation_mode config_str_to_omode(const char *str)
{
    if (!str || !*str)
        return OMODE_DEFAULT;
    if (strcasecmp(str, "default") == 0) {
        return OMODE_DEFAULT;
    } else if (strcasecmp(str, "normal") == 0) {
        return OMODE_NORMAL;
    } else if (strcasecmp(str, "legacy-compat") == 0 || strcasecmp(str, "legacy") == 0) {
        return OMODE_LEGACY;
    } else if (strcasecmp(str, "strict") == 0) {
        return OMODE_STRICT;
    } else {
        ICECAST_LOG_ERROR("Unknown operation mode \"%s\", falling back to DEFAULT.", str);
        return OMODE_DEFAULT;
    }
}

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

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

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);
}

static inline void __read_int(xmlDocPtr doc, xmlNodePtr node, int *val, const char *warning)
{
    char *str = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
    if (!str || !*str) {
        ICECAST_LOG_WARN("%s", warning);
    } else {
        *val = util_str_to_int(str, *val);
    }
    if (str)
        xmlFree(str);
}

static inline void __read_unsigned_int(xmlDocPtr doc, xmlNodePtr node, unsigned int *val, const char *warning)
{
    char *str = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
    if (!str || !*str) {
        ICECAST_LOG_WARN("%s", warning);
    } else {
        *val = util_str_to_unsigned_int(str, *val);
    }
    if (str)
        xmlFree(str);
}         

static inline int __parse_public(const char *str)
{
    /* values that are not bool */
    if (strcasecmp(str, "client") == 0)
        return -1;

    /* old way of doing so */
    if (strcmp(str, "-1") == 0)
        return -1;

    /* ok, only normal bool left! */
    return util_str_to_bool(str);
}

/* This converts TLS mode strings to (tlsmode_t).
 * In older versions of Icecast2 this was just a bool.
 * So we need to handle boolean values as well.
 * See also: util_str_to_bool().
 */
static tlsmode_t str_to_tlsmode(const char *str) {
    /* consider NULL and empty strings as auto mode */
    if (!str || !*str)
        return ICECAST_TLSMODE_AUTO;

    if (strcasecmp(str, "disabled") == 0) {
        return ICECAST_TLSMODE_DISABLED;
    } else if (strcasecmp(str, "auto") == 0) {
        return ICECAST_TLSMODE_AUTO;
    } else if (strcasecmp(str, "auto_no_plain") == 0) {
        return ICECAST_TLSMODE_AUTO_NO_PLAIN;
    } else if (strcasecmp(str, "rfc2817") == 0) {
        return ICECAST_TLSMODE_RFC2817;
    } else if (strcasecmp(str, "rfc2818") == 0 ||
               /* boolean-style values */
               strcasecmp(str, "true") == 0 ||
               strcasecmp(str, "yes")  == 0 ||
               strcasecmp(str, "on")   == 0 ) {
        return ICECAST_TLSMODE_RFC2818;
    }

    /* old style numbers: consider everyting non-zero RFC2818 */
    if (atoi(str))
        return ICECAST_TLSMODE_RFC2818;

    /* we default to auto mode */
    return ICECAST_TLSMODE_AUTO;
}

/* This checks for the TLS implementation of a node */
static int __check_node_impl(xmlNodePtr node, const char *def)
{
    char *impl;
    int res;

    impl = (char *)xmlGetProp(node, XMLSTR("implementation"));
    if (!impl)
        impl = (char *)xmlGetProp(node, XMLSTR("impl"));
    if (!impl)
        impl = (char *)xmlStrdup(XMLSTR(def));

    res = tls_check_impl(impl);

    xmlFree(impl);

    return res;
}


static void __append_old_style_auth(auth_stack_t       **stack,
                                    const char          *name,
                                    const char          *type,
                                    const char          *username,
                                    const char          *password,
                                    const char          *method,
                                    const char          *allow_method,
                                    int                  allow_web,
                                    const char          *allow_admin)
{
    xmlNodePtr  role,
                user,
                pass;
    auth_t     *auth;

    if (!type)
        return;

    role = xmlNewNode(NULL, XMLSTR("role"));

    xmlSetProp(role, XMLSTR("type"), XMLSTR(type));
    xmlSetProp(role, XMLSTR("deny-method"), XMLSTR("*"));
    if (allow_method)
        xmlSetProp(role, XMLSTR("allow-method"), XMLSTR(allow_method));

    if (name)
        xmlSetProp(role, XMLSTR("name"), XMLSTR(name));

    if (method)
        xmlSetProp(role, XMLSTR("method"), XMLSTR(method));

    if (allow_web) {
        xmlSetProp(role, XMLSTR("allow-web"), XMLSTR("*"));
    } else {
        xmlSetProp(role, XMLSTR("deny-web"), XMLSTR("*"));
    }

    if (allow_admin && strcmp(allow_admin, "*") == 0) {
        xmlSetProp(role, XMLSTR("allow-admin"), XMLSTR("*"));
    } else {
        xmlSetProp(role, XMLSTR("deny-admin"), XMLSTR("*"));
        if (allow_admin)
            xmlSetProp(role, XMLSTR("allow-admin"), XMLSTR(allow_admin));
    }

    if (username) {
        user = xmlNewChild(role, NULL, XMLSTR("option"), NULL);
        xmlSetProp(user, XMLSTR("name"), XMLSTR("username"));
        xmlSetProp(user, XMLSTR("value"), XMLSTR(username));
    }
    if (password) {
        pass = xmlNewChild(role, NULL, XMLSTR("option"), NULL);
        xmlSetProp(pass, XMLSTR("name"), XMLSTR("password"));
        xmlSetProp(pass, XMLSTR("value"), XMLSTR(password));
    }

    auth = auth_get_authenticator(role);
    auth_stack_push(stack, auth);
    auth_release(auth);

    xmlFreeNode(role);
}

static void __append_option_tag(xmlNodePtr  parent,
                                const char *name,
                                const char *value)
{
    xmlNodePtr node;

    if (!name || !value)
        return;

    node = xmlNewChild(parent, NULL, XMLSTR("option"), NULL);
    xmlSetProp(node, XMLSTR("name"), XMLSTR(name));
    xmlSetProp(node, XMLSTR("value"), XMLSTR(value));
}

static void __append_old_style_urlauth(auth_stack_t **stack,
                                       const char    *client_add,
                                       const char    *client_remove,
                                       const char    *action_add,
                                       const char    *action_remove,
                                       const char    *username,
                                       const char    *password,
                                       int            is_source,
                                       const char    *auth_header,
                                       const char    *timelimit_header,
                                       const char    *headers,
                                       const char    *header_prefix)
{
    xmlNodePtr   role;
    auth_t      *auth;

    if (!stack || (!client_add && !client_remove))
        return;

    role = xmlNewNode(NULL, XMLSTR("role"));

    xmlSetProp(role, XMLSTR("type"), XMLSTR("url"));

    if (is_source) {
        xmlSetProp(role, XMLSTR("method"), XMLSTR("source,put"));
        xmlSetProp(role, XMLSTR("deny-method"), XMLSTR("*"));
        xmlSetProp(role, XMLSTR("allow-method"), XMLSTR("source,put"));
        xmlSetProp(role, XMLSTR("allow-web"), XMLSTR("*"));
        xmlSetProp(role, XMLSTR("allow-admin"), XMLSTR("*"));
    } else {
        xmlSetProp(role, XMLSTR("method"), XMLSTR("get,post,head"));
        xmlSetProp(role, XMLSTR("deny-method"), XMLSTR("*"));
        xmlSetProp(role, XMLSTR("allow-method"), XMLSTR("get,post,head"));
        xmlSetProp(role, XMLSTR("allow-web"), XMLSTR("*"));
        xmlSetProp(role, XMLSTR("deny-admin"), XMLSTR("*"));
    }

    __append_option_tag(role, "client_add", client_add);
    __append_option_tag(role, "client_remove", client_remove);
    __append_option_tag(role, "action_add", action_add);
    __append_option_tag(role, "action_remove", action_remove);
    __append_option_tag(role, "username", username);
    __append_option_tag(role, "password", password);
    __append_option_tag(role, "auth_header", auth_header);
    __append_option_tag(role, "timelimit_header", timelimit_header);
    __append_option_tag(role, "headers", headers);
    __append_option_tag(role, "header_prefix", header_prefix);

    auth = auth_get_authenticator(role);
    if (auth) {
        auth_stack_push(stack, auth);
        auth_release(auth);
        ICECAST_LOG_DEBUG("Pushed authenticator %p on stack %p.", auth, stack);
    } else {
        ICECAST_LOG_DEBUG("Failed to set up authenticator.");
    }

    xmlFreeNode(role);
}

static void __append_old_style_exec_event(event_registration_t **list,
                                          const char            *trigger,
                                          const char            *executable)
{
    xmlNodePtr            exec;
    event_registration_t *er;

    exec = xmlNewNode(NULL, XMLSTR("event"));

    xmlSetProp(exec, XMLSTR("type"), XMLSTR("exec"));
    xmlSetProp(exec, XMLSTR("trigger"), XMLSTR(trigger));

    __append_option_tag(exec, "executable", executable);

    er = event_new_from_xml_node(exec);
    event_registration_push(list, er);
    event_registration_release(er);

    xmlFreeNode(exec);
}

static void __append_old_style_url_event(event_registration_t   **list,
                                         const char              *trigger,
                                         const char              *url,
                                         const char              *action,
                                         const char              *username,
                                         const char              *password)
{
    xmlNodePtr            exec;
    event_registration_t *er;

    exec = xmlNewNode(NULL, XMLSTR("event"));

    xmlSetProp(exec, XMLSTR("type"), XMLSTR("url"));
    xmlSetProp(exec, XMLSTR("trigger"), XMLSTR(trigger));

    __append_option_tag(exec, "url", url);
    __append_option_tag(exec, "action", action);
    __append_option_tag(exec, "username", username);
    __append_option_tag(exec, "password", password);

    er = event_new_from_xml_node(exec);
    event_registration_push(list, er);
    event_registration_release(er);

    xmlFreeNode(exec);
}

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);
    }
}

static inline ice_config_http_header_t *config_copy_http_header(ice_config_http_header_t *header)
{
    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 */

        cur->type   = header->type;
        cur->name   = (char *)xmlCharStrdup(header->name);
        cur->value  = (char *)xmlCharStrdup(header->value);
        cur->status = header->status;

        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;
}

static void config_clear_mount(mount_proxy *mount)
{
    if (mount->mountname)           xmlFree(mount->mountname);
    if (mount->dumpfile)            xmlFree(mount->dumpfile);
    if (mount->intro_filename)      xmlFree(mount->intro_filename);
    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->authstack)           auth_stack_release(mount->authstack);

    event_registration_release(mount->event);
    config_clear_http_header(mount->http_headers);
    free(mount);
}

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);
        if (listener->shoutcast_mount)  xmlFree(listener->shoutcast_mount);
        free (listener);
    }
    return next;
}

void config_clear(ice_config_t *c)
{
    ice_config_dir_t    *dirnode,
                        *nextdirnode;
    relay_server        *relay,
                        *nextrelay;
    mount_proxy         *mount,
                        *nextmount;
    aliases             *alias,
                        *nextalias;
#ifdef USE_YP
    int                 i;
#endif

    free(c->config_filename);

    xmlFree(c->server_id);
    if (c->location)        xmlFree(c->location);
    if (c->admin)           xmlFree(c->admin);
    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);
    if (c->null_device)     xmlFree(c->null_device);
    if (c->pidfile)         xmlFree(c->pidfile);
    if (c->banfile)         xmlFree(c->banfile);
    if (c->allowfile)       xmlFree(c->allowfile);
    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);
    if (c->authstack)       auth_stack_release(c->authstack);
    if (c->master_server)   xmlFree(c->master_server);
    if (c->master_username) xmlFree(c->master_username);
    if (c->master_password) xmlFree(c->master_password);
    if (c->user)            xmlFree(c->user);
    if (c->group)           xmlFree(c->group);
    if (c->mimetypes_fn)    xmlFree(c->mimetypes_fn);

    if (c->tls_context.cert_file)       xmlFree(c->tls_context.cert_file);
    if (c->tls_context.key_file)        xmlFree(c->tls_context.key_file);
    if (c->tls_context.cipher_list)     xmlFree(c->tls_context.cipher_list);

    event_registration_release(c->event);

    while ((c->listen_sock = config_clear_listener(c->listen_sock)));

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

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

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

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

    config_clear_http_header(c->http_headers);
    memset(c, 0, sizeof(ice_config_t));
}

void config_reread_config(void)
{
    int           ret;
    ice_config_t *config;
    ice_config_t  new_config;
    /* reread config file */

    config = config_grab_config(); /* Both to get the lock, and to be able
                                     to find out the config filename */
    xmlSetGenericErrorFunc("config", log_parse_failure);
    ret = config_parse_file(config->config_filename, &new_config);
    if(ret < 0) {
        ICECAST_LOG_ERROR("Error parsing config, not replacing existing config");
        switch (ret) {
            case CONFIG_EINSANE:
                ICECAST_LOG_ERROR("Config filename null or blank");
            break;
            case CONFIG_ENOROOT:
                ICECAST_LOG_ERROR("Root element not found in %s", config->config_filename);
            break;
            case CONFIG_EBADROOT:
                ICECAST_LOG_ERROR("Not an icecast2 config file: %s",
                        config->config_filename);
            break;
            default:
                ICECAST_LOG_ERROR("Parse error in reading %s", config->config_filename);
            break;
        }
        config_release_config();
    } else {
        config_clear(config);
        config_set_config(&new_config);
        config = config_get_config_unlocked();
        restart_logging(config);
        connection_reread_config(config);
        yp_recheck_config(config);
        fserve_recheck_mime_types(config);
        stats_global(config);
        config_release_config();
        slave_update_all_mounts();
    }
}

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;
    }

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

    config_init_configuration(configuration);
    configuration->config_filename = strdup(filename);
    _parse_root(doc, node->xmlChildrenNode, configuration);
    xmlFreeDoc(doc);
    _merge_mounts_all(configuration);
    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)
{
    thread_rwlock_unlock(&(_locks.config_lock));
}

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

ice_config_t *config_grab_config(void)
{
    thread_rwlock_wlock(&(_locks.config_lock));
    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)
{
    configuration
        ->location = (char *) xmlCharStrdup(CONFIG_DEFAULT_LOCATION);
    configuration
        ->server_id = (char *) xmlCharStrdup(ICECAST_VERSION_STRING);
    configuration
        ->admin = (char *) xmlCharStrdup(CONFIG_DEFAULT_ADMIN);
    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;
    configuration
        ->shoutcast_mount = (char *) xmlCharStrdup(CONFIG_DEFAULT_SHOUTCAST_MOUNT);
    configuration
        ->fileserve  = CONFIG_DEFAULT_FILESERVE;
    configuration
        ->touch_interval = CONFIG_DEFAULT_TOUCH_FREQ;
    configuration
        ->on_demand = 0;
    configuration
        ->dir_list = NULL;
    configuration
        ->hostname = (char *) xmlCharStrdup(CONFIG_DEFAULT_HOSTNAME);
    configuration
        ->mimetypes_fn = (char *) xmlCharStrdup(MIMETYPESFILE);
    configuration
        ->master_server = NULL;
    configuration
        ->master_server_port = 0;
    configuration
        ->master_update_interval = CONFIG_MASTER_UPDATE_INTERVAL;
    configuration
        ->master_username = (char *) xmlCharStrdup(CONFIG_DEFAULT_MASTER_USERNAME);
    configuration
        ->master_password = NULL;
    configuration
        ->base_dir = (char *) xmlCharStrdup(CONFIG_DEFAULT_BASE_DIR);
    configuration
        ->log_dir = (char *) xmlCharStrdup(CONFIG_DEFAULT_LOG_DIR);
    configuration
        ->null_device = (char *) xmlCharStrdup(CONFIG_DEFAULT_NULL_FILE);
    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);
    configuration
        ->loglevel = CONFIG_DEFAULT_LOG_LEVEL;
    configuration
        ->chroot = CONFIG_DEFAULT_CHROOT;
    configuration
        ->chuid = CONFIG_DEFAULT_CHUID;
    configuration
        ->user = NULL;
    configuration
        ->group = NULL;
    configuration
        ->num_yp_directories = 0;
    /* default to a typical prebuffer size used by clients */
    configuration
        ->burst_size = CONFIG_DEFAULT_BURST_SIZE;
    configuration->tls_context
        .cipher_list = (char *) xmlCharStrdup(CONFIG_DEFAULT_CIPHER_LIST);
}

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 domain 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. "
                "this breaks YP directory listings. YP directory listing "
                "support will be disabled.", CONFIG_DEFAULT_HOSTNAME);
                /* FIXME actually disable YP */
        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> contains unusual "
                "characters. This may cause problems, e.g. with YP directory "
                "listings.");
        break;
    }
}

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

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

    do {
        if (node == NULL)
            break;
        if (xmlIsBlankNode(node))
            continue;
        if (xmlStrcmp(node->name, XMLSTR("location")) == 0) {
            if (configuration->location)
                xmlFree(configuration->location);
            configuration->location = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("admin")) == 0) {
            if (configuration->admin)
                xmlFree(configuration->admin);
            configuration->admin = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("server-id")) == 0) {
            xmlFree(configuration->server_id);
            configuration->server_id = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            ICECAST_LOG_WARN("Warning, server version string override "
                "detected. This may lead to unexpected client software "
                "behavior.");
        } else if (xmlStrcmp(node->name, XMLSTR("authentication")) == 0) {
            _parse_authentication(doc, node->xmlChildrenNode, configuration, &source_password);
        } else if (xmlStrcmp(node->name, XMLSTR("source-password")) == 0) {
            /* TODO: This is the backwards-compatibility location */
            ICECAST_LOG_WARN("<source-password> defined outside "
                "<authentication>. This is deprecated and will be removed in "
                "version 2.X.0");
	    /* FIXME Settle target version for removal of this functionality! */
            if (source_password)
                xmlFree(source_password);
            source_password = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("icelogin")) == 0) {
            ICECAST_LOG_ERROR("<icelogin> support has been removed.");
        } else if (xmlStrcmp(node->name, XMLSTR("fileserve")) == 0) {
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            configuration->fileserve = util_str_to_bool(tmp);
            if (tmp)
                xmlFree(tmp);
        } else if (xmlStrcmp(node->name, XMLSTR("relays-on-demand")) == 0) {
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            configuration->on_demand = util_str_to_bool(tmp);
            if (tmp)
                xmlFree(tmp);
        } else if (xmlStrcmp(node->name, XMLSTR("hostname")) == 0) {
            if (configuration->hostname)
                xmlFree(configuration->hostname);
            configuration->hostname = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("mime-types")) == 0) {
            ICECAST_LOG_WARN("<mime-types> has been moved into <paths>. Please update your configuration file.");
            if (configuration->mimetypes_fn)
                xmlFree(configuration->mimetypes_fn);
            configuration->mimetypes_fn = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("listen-socket")) == 0) {
            _parse_listen_socket(doc, node->xmlChildrenNode, configuration);
        } else if (xmlStrcmp(node->name, XMLSTR("port")) == 0) {
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            if (tmp && *tmp) {
                configuration->port = atoi(tmp);
                configuration->listen_sock->port = atoi(tmp);
                xmlFree(tmp);
            } else {
                ICECAST_LOG_WARN("<port> setting must not be empty.");
            }
        } else if (xmlStrcmp(node->name, XMLSTR("bind-address")) == 0) {
            if (configuration->listen_sock->bind_address)
                xmlFree(configuration->listen_sock->bind_address);
            configuration->listen_sock->bind_address = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("master-server")) == 0) {
            if (configuration->master_server)
                xmlFree(configuration->master_server);
            configuration->master_server = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("master-username")) == 0) {
            if (configuration->master_username)
                xmlFree(configuration->master_username);
            configuration->master_username = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("master-password")) == 0) {
            if (configuration->master_password)
                xmlFree(configuration->master_password);
            configuration->master_password = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("master-server-port")) == 0) {
            __read_int(doc, node, &configuration->master_server_port, "<master-server-port> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("master-update-interval")) == 0) {
            __read_int(doc, node, &configuration->master_update_interval, "<master-update-interval> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("shoutcast-mount")) == 0) {
            if (configuration->shoutcast_mount)
                xmlFree(configuration->shoutcast_mount);
            configuration->shoutcast_mount = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("limits")) == 0) {
            _parse_limits(doc, node->xmlChildrenNode, configuration);
        } else if (xmlStrcmp(node->name, XMLSTR("http-headers")) == 0) {
            _parse_http_headers(doc, node->xmlChildrenNode, &(configuration->http_headers));
        } else if (xmlStrcmp(node->name, XMLSTR("relay")) == 0) {
            _parse_relay(doc, node->xmlChildrenNode, configuration);
        } else if (xmlStrcmp(node->name, XMLSTR("mount")) == 0) {
            _parse_mount(doc, node, configuration);
        } else if (xmlStrcmp(node->name, XMLSTR("directory")) == 0) {
            _parse_directory(doc, node->xmlChildrenNode, configuration);
        } else if (xmlStrcmp(node->name, XMLSTR("paths")) == 0) {
            _parse_paths(doc, node->xmlChildrenNode, configuration);
        } else if (xmlStrcmp(node->name, XMLSTR("logging")) == 0) {
            _parse_logging(doc, node->xmlChildrenNode, configuration);
        } else if (xmlStrcmp(node->name, XMLSTR("security")) == 0) {
            _parse_security(doc, node->xmlChildrenNode, configuration);
        } else if (xmlStrcmp(node->name, XMLSTR("event-bindings")) == 0 ||
                   xmlStrcmp(node->name, XMLSTR("kartoffelsalat")) == 0) {
            _parse_events(&configuration->event, node->xmlChildrenNode);
        }
    } while ((node = node->next));

    /* global source password is set.
     * We need to set it on default mount.
     * If default mount has a authstack not NULL we don't need to do anything.
     */
    if (source_password) {
        mount_proxy *mount = config_find_mount(configuration, NULL, MOUNT_TYPE_DEFAULT);
        if (!mount) {
            /* create a default mount here */
            xmlNodePtr node;
            node = xmlNewNode(NULL, XMLSTR("mount"));
            xmlSetProp(node, XMLSTR("type"), XMLSTR("default"));
            _parse_mount(doc, node, configuration);
            xmlFreeNode(node);
            mount = config_find_mount(configuration, NULL, MOUNT_TYPE_DEFAULT);
        }
        if (mount) {
            if (!mount->authstack) {
                __append_old_style_auth(&mount->authstack,
                                        "legacy-global-source",
                                        AUTH_TYPE_STATIC, "source",
                                        source_password, NULL,
                                        "source,put,get", 0, "*");
            }
        } else {
            ICECAST_LOG_ERROR("Can not find nor create default mount, but "
                "global legacy source password set. This is bad.");
        }
        xmlFree(source_password);
    }
    /* 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--;
    }
    if (configuration->port == 0)
        configuration->port = 8000;

    /* 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).");

    __check_hostname(configuration);

    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\". This breaks YP directory listings. "
            "YP directory support will be disabled.", CONFIG_DEFAULT_ADMIN);
            /* FIXME actually disable YP */
      if (!configuration->admin)
          configuration->admin = (char *) xmlCharStrdup(CONFIG_DEFAULT_ADMIN);
  }
}

static void _parse_limits(xmlDocPtr     doc,
                          xmlNodePtr    node,
                          ice_config_t *configuration)
{
    char *tmp;
    do {
        if (node == NULL)
            break;
        if (xmlIsBlankNode(node))
            continue;

        if (xmlStrcmp(node->name, XMLSTR("clients")) == 0) {
            __read_int(doc, node, &configuration->client_limit, "<clients> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("sources")) == 0) {
            __read_int(doc, node, &configuration->source_limit, "<sources> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("queue-size")) == 0) {
            __read_unsigned_int(doc, node, &configuration->queue_size_limit, "<queue-size> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("threadpool")) == 0) {
            ICECAST_LOG_WARN("<threadpool> functionality was removed in Icecast"
			     " version 2.3.0, please remove this from your config.");
        } else if (xmlStrcmp(node->name, XMLSTR("client-timeout")) == 0) {
            __read_int(doc, node, &configuration->client_timeout, "<client-timeout> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("header-timeout")) == 0) {
            __read_int(doc, node, &configuration->header_timeout, "<header-timeout> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("source-timeout")) == 0) {
            __read_int(doc, node, &configuration->source_timeout, "<source-timeout> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("burst-on-connect")) == 0) {
            ICECAST_LOG_WARN("<burst-on-connect> is deprecated, use <burst-size> instead.");
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            if (util_str_to_int(tmp, 0) == 0)
                configuration->burst_size = 0;
            if (tmp)
                xmlFree(tmp);
        } else if (xmlStrcmp(node->name, XMLSTR("burst-size")) == 0) {
            __read_unsigned_int(doc, node, &configuration->burst_size, "<burst-size> must not be empty.");
        }
    } while ((node = node->next));
}

static void _parse_mount_oldstyle_authentication(mount_proxy    *mount,
                                                 xmlNodePtr      node,
                                                 auth_stack_t  **authstack)
{
     int        allow_duplicate_users = 1;
     auth_t    *auth;
     char      *type;
     char      *name;
     char      *value;
     xmlNodePtr child;

     child = node->xmlChildrenNode;

     while (child) {
         if (xmlStrcmp(child->name, XMLSTR("option")) == 0) {
             name = (char *)xmlGetProp(child, XMLSTR("name"));
             value = (char *)xmlGetProp(child, XMLSTR("value"));
             if (name && value) {
                 if (strcmp(name, "allow_duplicate_users") == 0) {
                     allow_duplicate_users = util_str_to_bool(value);
                 }
             }
             if (name)
                 xmlFree(name);
             if (value)
                 xmlFree(value);
         }
         child = child->next;
     }

     type = (char *)xmlGetProp(node, XMLSTR("type"));
     if (strcmp(type, AUTH_TYPE_HTPASSWD) == 0) {
         if (!allow_duplicate_users)
             xmlSetProp(node, XMLSTR("connections-per-user"), XMLSTR("0"));

         auth = auth_get_authenticator(node);
         if (auth) {
             auth_stack_push(authstack, auth);
             auth_release(auth);
         }

         __append_old_style_auth(authstack, NULL, AUTH_TYPE_ANONYMOUS,
             NULL, NULL, "get,head,post", NULL, 0, NULL);
     } else if (strcmp(type, AUTH_TYPE_URL) == 0) {
         /* This block is super fun! Attention! Super fun ahead! Ladies and Gentlemen take care and watch your children! */
         /* Stuff that was of help:
          * $ sed 's/^.*name="\([^"]*\)".*$/         const char *\1 = NULL;/'
          * $ sed 's/^.*name="\([^"]*\)".*$/         if (\1)\n             xmlFree(\1);/'
          * $ sed 's/^.*name="\([^"]*\)".*$/                     } else if (strcmp(name, "\1") == 0) {\n                         \1 = value;\n                         value = NULL;/'
          */
         /* urls */
         char *mount_add        = NULL;
         char *mount_remove     = NULL;
         char *listener_add     = NULL;
         char *listener_remove  = NULL;
         char *stream_auth      = NULL;
         /* request credentials */
         char *username         = NULL;
         char *password         = NULL;
         /* general options */
         char *auth_header      = NULL;
         char *timelimit_header = NULL;
         char *headers          = NULL;
         char *header_prefix    = NULL;

         child = node->xmlChildrenNode;
         while (child) {
             if (xmlStrcmp(child->name, XMLSTR("option")) == 0) {
                 name = (char *)xmlGetProp(child, XMLSTR("name"));
                 value = (char *)xmlGetProp(child, XMLSTR("value"));

                 if (name && value) {
                     if (strcmp(name, "mount_add") == 0) {
                         mount_add = value;
                         value = NULL;
                     } else if (strcmp(name, "mount_add") == 0) {
                         mount_add = value;
                         value = NULL;
                     } else if (strcmp(name, "mount_remove") == 0) {
                         mount_remove = value;
                         value = NULL;
                     } else if (strcmp(name, "listener_add") == 0) {
                         listener_add = value;
                         value = NULL;
                     } else if (strcmp(name, "listener_remove") == 0) {
                         listener_remove = value;
                         value = NULL;
                     } else if (strcmp(name, "username") == 0) {
                         username = value;
                         value = NULL;
                     } else if (strcmp(name, "password") == 0) {
                         password = value;
                         value = NULL;
                     } else if (strcmp(name, "auth_header") == 0) {
                         auth_header = value;
                         value = NULL;
                     } else if (strcmp(name, "timelimit_header") == 0) {
                         timelimit_header = value;
                         value = NULL;
                     } else if (strcmp(name, "headers") == 0) {
                         headers = value;
                         value = NULL;
                     } else if (strcmp(name, "header_prefix") == 0) {
                         header_prefix = value;
                         value = NULL;
                     } else if (strcmp(name, "stream_auth") == 0) {
                         stream_auth = value;
                         value = NULL;
                     }
                 }

                 if (name)
                     xmlFree(name);
                 if (value)
                     xmlFree(value);
             }
             child = child->next;
         }

         if (mount_add)
             __append_old_style_url_event(&mount->event, "source-connect",
                 mount_add, "mount_add", username, password);
         if (mount_remove)
             __append_old_style_url_event(&mount->event, "source-disconnect",
                 mount_add, "mount_remove", username, password);

         __append_old_style_urlauth(authstack, listener_add, listener_remove,
             "listener_add", "listener_remove", username, password, 0,
             auth_header, timelimit_header, headers, header_prefix);
         __append_old_style_urlauth(authstack, stream_auth, NULL, "stream_auth",
             NULL, username, password, 1, auth_header, timelimit_header,
             headers, header_prefix);
         if (listener_add)
             __append_old_style_auth(authstack, NULL, AUTH_TYPE_ANONYMOUS, NULL,
                 NULL, "get,put,head", NULL, 0, NULL);
         if (stream_auth)
             __append_old_style_auth(authstack, NULL, AUTH_TYPE_ANONYMOUS, NULL,
                 NULL, "source,put", NULL, 0, NULL);

         if (mount_add)
             xmlFree(mount_add);
         if (mount_remove)
             xmlFree(mount_remove);
         if (listener_add)
             xmlFree(listener_add);
         if (listener_remove)
             xmlFree(listener_remove);
         if (username)
             xmlFree(username);
         if (password)
             xmlFree(password);
         if (auth_header)
             xmlFree(auth_header);
         if (timelimit_header)
             xmlFree(timelimit_header);
         if (headers)
             xmlFree(headers);
         if (header_prefix)
             xmlFree(header_prefix);
         if (stream_auth)
             xmlFree(stream_auth);
     } else {
         ICECAST_LOG_ERROR("Unknown authentication type in legacy mode. "
             "Anonymous listeners and global login for sources disabled.");
         __append_old_style_auth(authstack, NULL, AUTH_TYPE_ANONYMOUS, NULL,
             NULL, NULL, NULL, 0, NULL);
     }
     xmlFree(type);
}

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;
    char         *username   = NULL;
    char         *password   = NULL;
    auth_stack_t *authstack  = NULL;

    /* default <mount> settings */
    mount->mounttype            = MOUNT_TYPE_NORMAL;
    mount->max_listeners        = -1;
    mount->burst_size           = -1;
    mount->mp3_meta_interval    = -1;
    mount->yp_public            = -1;
    mount->max_history          = -1;
    mount->next                 = NULL;

    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 {
            ICECAST_LOG_WARN("Unknown mountpoint type: %s", tmp);
            config_clear_mount(mount);
            return;
        }
        xmlFree(tmp);
    }

    node = node->xmlChildrenNode;

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

        if (xmlStrcmp(node->name, XMLSTR("mount-name")) == 0) {
            mount->mountname = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("username")) == 0) {
            username = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("password")) == 0) {
            password = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("dump-file")) == 0) {
            mount->dumpfile = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("intro")) == 0) {
            mount->intro_filename = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("fallback-mount")) == 0) {
            mount->fallback_mount = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("fallback-when-full")) == 0) {
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->fallback_when_full = util_str_to_bool(tmp);
            if(tmp)
                xmlFree(tmp);
        } else if (xmlStrcmp(node->name, XMLSTR("max-listeners")) == 0) {
            __read_int(doc, node, &mount->max_listeners, "<max-listeners> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("max-history")) == 0) {
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->max_history = util_str_to_int(tmp, mount->max_history);
            if (mount->max_history < 1 || mount->max_history > 256)
                mount->max_history = 256; /* deny super huge values */
            if(tmp)
                xmlFree(tmp);
        } else if (xmlStrcmp(node->name, XMLSTR("charset")) == 0) {
            mount->charset = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("mp3-metadata-interval")) == 0) {
            ICECAST_LOG_WARN("<mp3-metadata-interval> is deprecated and will be "
                "removed in a future version. "
                "Please use <icy-metadata-interval> instead.");
                /* FIXME when do we plan to remove this? */
            __read_int(doc, node, &mount->mp3_meta_interval, "<mp3-metadata-interval> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("icy-metadata-interval")) == 0) {
            __read_int(doc, node, &mount->mp3_meta_interval, "<icy-metadata-interval> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("fallback-override")) == 0) {
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->fallback_override = util_str_to_bool(tmp);
            if(tmp)
                xmlFree(tmp);
        } else if (xmlStrcmp(node->name, XMLSTR("no-mount")) == 0) {
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->no_mount = util_str_to_bool(tmp);
            if(tmp)
                xmlFree(tmp);
        } else if (xmlStrcmp(node->name, XMLSTR("no-yp")) == 0) {
            ICECAST_LOG_WARN("<no-yp> defined. Please use <public>. This is "
                "deprecated and will be removed in a future version.");
                /* FIXME when do we plan to remove this? */
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->yp_public = util_str_to_bool(tmp) == 0 ? -1 : 0;
            if(tmp)
                xmlFree(tmp);
        } else if (xmlStrcmp(node->name, XMLSTR("hidden")) == 0) {
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->hidden = util_str_to_bool(tmp);
            if(tmp)
                xmlFree(tmp);
        } else if (xmlStrcmp(node->name, XMLSTR("authentication")) == 0) {
            tmp = (char *)xmlGetProp(node, XMLSTR("type"));
            if (tmp) {
                xmlFree(tmp);
                _parse_mount_oldstyle_authentication(mount, node, &authstack);
            } else {
                xmlNodePtr child = node->xmlChildrenNode;
                do {
                    if (child == NULL)
                        break;
                    if (xmlIsBlankNode(child))
                        continue;
                    if (xmlStrcmp(child->name, XMLSTR("role")) == 0) {
                        auth_t *auth = auth_get_authenticator(child);
                        auth_stack_push(&authstack, auth);
                        auth_release(auth);
                    }
               } while ((child = child->next));
            }
        } else if (xmlStrcmp(node->name, XMLSTR("on-connect")) == 0) {
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            if (tmp) {
                __append_old_style_exec_event(&mount->event,
                    "source-connect", tmp);
                xmlFree(tmp);
            }
        } else if (xmlStrcmp(node->name, XMLSTR("on-disconnect")) == 0) {
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            if (tmp) {
                __append_old_style_exec_event(&mount->event,
                    "source-disconnect", tmp);
                xmlFree(tmp);
            }
        } else if (xmlStrcmp(node->name, XMLSTR("max-listener-duration")) == 0) {
            __read_unsigned_int(doc, node, &mount->max_listener_duration, "<max-listener-duration> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("queue-size")) == 0) {
            __read_unsigned_int(doc, node, &mount->queue_size_limit, "<queue-size> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("source-timeout")) == 0) {
            __read_unsigned_int(doc, node, &mount->source_timeout, "<source-timeout> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("burst-size")) == 0) {
            __read_int(doc, node, &mount->burst_size, "<burst-size> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("cluster-password")) == 0) {
            mount->cluster_password = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("stream-name")) == 0) {
            mount->stream_name = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("stream-description")) == 0) {
            mount->stream_description = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("stream-url")) == 0) {
            mount->stream_url = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("genre")) == 0) {
            mount->stream_genre = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("bitrate")) == 0) {
            mount->bitrate = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("public")) == 0) {
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            mount->yp_public = __parse_public(tmp);
            if(tmp)
                xmlFree(tmp);
        } else if (xmlStrcmp(node->name, XMLSTR("type")) == 0) {
            mount->type = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("subtype")) == 0) {
            mount->subtype = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("http-headers")) == 0) {
            _parse_http_headers(doc, node->xmlChildrenNode,
                &(mount->http_headers));
        } else if (xmlStrcmp(node->name, XMLSTR("event-bindings")) == 0 ||
                   xmlStrcmp(node->name, XMLSTR("kartoffelsalat")) == 0) {
            _parse_events(&mount->event, node->xmlChildrenNode);
        }
    } while ((node = node->next));

    if (password) {
        auth_stack_t *old_style = NULL;
        __append_old_style_auth(&old_style, "legacy-mount-source",
            AUTH_TYPE_STATIC, username ? username : "source", password, NULL,
            "source,put,get", 0, "*");
        if (authstack) {
            auth_stack_append(old_style, authstack);
            auth_stack_release(authstack);
        }
        authstack = old_style;
    }

    if (username)
        xmlFree(username);
    if (password)
        xmlFree(password);

    if (mount->authstack)
        auth_stack_release(mount->authstack);
    auth_stack_addref(mount->authstack = authstack);

    ICECAST_LOG_DEBUG("Mount %p (mountpoint %s) has %sactive "
        "roles on authstack.", mount, mount->mountname, authstack ? "" : "no ");

    /* make sure we have at least the mountpoint name */
    if (mount->mountname == NULL && mount->mounttype != MOUNT_TYPE_DEFAULT) {
        config_clear_mount(mount);
        return;
    } else if (mount->mountname != NULL && mount->mounttype == MOUNT_TYPE_DEFAULT) {
        ICECAST_LOG_WARN("Default mount %s has mount-name set. This is "
            "not supported. Behavior may not be consistent.", mount->mountname);
    }

    while (authstack) {
        auth_t *auth = auth_stack_get(authstack);
        if (mount->mountname) {
            auth->mount = strdup((char *)mount->mountname);
        } else if (mount->mounttype == MOUNT_TYPE_DEFAULT ) {
            auth->mount = strdup("(default mount)");
        }
        auth_release(auth);
        auth_stack_next(&authstack);
    }

    while(current) {
        last = current;
        current = current->next;
    }

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

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

static void _parse_http_headers(xmlDocPtr                   doc,
                                xmlNodePtr                  node,
                                ice_config_http_header_t  **http_headers)
{
    ice_config_http_header_t *header;
    ice_config_http_header_t *next;
    char                     *name  = NULL;
    char                     *value = NULL;
    char                     *tmp;
    int                       status;
    http_header_type          type;

    do {
        if (node == NULL)
            break;
        if (xmlIsBlankNode(node))
            continue;
        if (xmlStrcmp(node->name, XMLSTR("header")) != 0)
            continue;
        if (!(name = (char *)xmlGetProp(node, XMLSTR("name"))))
            break;
        if (!(value = (char *)xmlGetProp(node, XMLSTR("value"))))
            break;

        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 = util_str_to_int(tmp, 0);
            xmlFree(tmp);
        }

        header = calloc(1, sizeof(ice_config_http_header_t));
        if (!header)
            break;

        header->type    = type;
        header->name    = name;
        header->value   = value;
        header->status  = status;
        name            = NULL;
        value           = NULL;

        if (!*http_headers) {
            *http_headers = header;
            continue;
        }
        next = *http_headers;
        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);
}

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;

    while(current) {
        last = current;
        current = current->next;
    }

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

    relay->next         = NULL;
    relay->mp3metadata  = 1;
    relay->on_demand    = configuration->on_demand;
    relay->server       = (char *) xmlCharStrdup("127.0.0.1");
    relay->mount        = (char *) xmlCharStrdup("/");

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

        if (xmlStrcmp(node->name, XMLSTR("server")) == 0) {
            if (relay->server)
                xmlFree(relay->server);
            relay->server = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("port")) == 0) {
            __read_int(doc, node, &relay->port, "<port> setting must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("mount")) == 0) {
            if (relay->mount)
                xmlFree(relay->mount);
            relay->mount = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("local-mount")) == 0) {
            if (relay->localmount)
                xmlFree(relay->localmount);
            relay->localmount = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("relay-shoutcast-metadata")) == 0) {
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            relay->mp3metadata = util_str_to_bool(tmp);
            if(tmp)
                xmlFree(tmp);
        } else if (xmlStrcmp(node->name, XMLSTR("username")) == 0) {
            if (relay->username)
                xmlFree(relay->username);
            relay->username = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("password")) == 0) {
            if (relay->password)
                xmlFree(relay->password);
            relay->password = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("on-demand")) == 0) {
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            relay->on_demand = util_str_to_bool(tmp);
            if (tmp)
                xmlFree(tmp);
        } else if (xmlStrcmp(node->name, XMLSTR("bind")) == 0) {
            if (relay->bind)
                xmlFree(relay->bind);
            relay->bind = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        }
    } while ((node = node->next));
    if (relay->localmount == NULL)
        relay->localmount = (char *)xmlStrdup(XMLSTR(relay->mount));
}

static void _parse_listen_socket(xmlDocPtr      doc,
                                 xmlNodePtr     node,
                                 ice_config_t  *configuration)
{
    char        *tmp;
    listener_t  *listener = calloc(1, sizeof(listener_t));

    if (listener == NULL)
        return;
    listener->port = 8000;

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

        if (xmlStrcmp(node->name, XMLSTR("port")) == 0) {
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            if (tmp) {
                if(configuration->port == 0)
                    configuration->port = util_str_to_int(tmp, 0);
                listener->port = util_str_to_int(tmp, listener->port);
                xmlFree(tmp);
            } else {
                ICECAST_LOG_WARN("<port> setting must not be empty.");
            }
        } else if (xmlStrcmp(node->name, XMLSTR("tls")) == 0 ||
                   xmlStrcmp(node->name, XMLSTR("ssl")) == 0) {
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            listener->tls = str_to_tlsmode(tmp);
            if(tmp)
                xmlFree(tmp);
        } else if (xmlStrcmp(node->name, XMLSTR("shoutcast-compat")) == 0) {
            tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            listener->shoutcast_compat = util_str_to_bool(tmp);
            if(tmp)
                xmlFree(tmp);
        } else if (xmlStrcmp(node->name, XMLSTR("shoutcast-mount")) == 0) {
            if (listener->shoutcast_mount)
                xmlFree(listener->shoutcast_mount);
            listener->shoutcast_mount = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("bind-address")) == 0) {
            if (listener->bind_address)
                xmlFree(listener->bind_address);
            listener->bind_address = (char *)xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("so-sndbuf")) == 0) {
            __read_int(doc, node, &listener->so_sndbuf, "<so-sndbuf> must not be empty.");
        }
    } while ((node = node->next));

    /* we know there's at least one of these, so add this new one after the first
     * that way it can be removed easily later on */
    listener->next = configuration->listen_sock->next;
    configuration->listen_sock->next = listener;
    configuration->listen_sock_count++;
    if (listener->shoutcast_mount) {
        listener_t *sc_port = calloc(1, sizeof(listener_t));
        sc_port->port = listener->port+1;
        sc_port->shoutcast_compat = 1;
        sc_port->shoutcast_mount = (char*)xmlStrdup(XMLSTR(listener->shoutcast_mount));
        if (listener->bind_address)
            sc_port->bind_address = (char*)xmlStrdup(XMLSTR(listener->bind_address));

        sc_port->next = listener->next;
        listener->next = sc_port;
        configuration->listen_sock_count++;
    }
}

static void _parse_authentication(xmlDocPtr doc, xmlNodePtr node,
        ice_config_t *configuration, char **source_password)
{
    char *admin_password = NULL,
         *admin_username = NULL;
    char *relay_password = NULL,
         *relay_username = (char*)xmlCharStrdup(CONFIG_DEFAULT_MASTER_USERNAME);
    auth_stack_t *old_style = NULL,
                 *new_style = NULL;

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

        if (xmlStrcmp(node->name, XMLSTR("source-password")) == 0) {
            if (xmlGetProp(node, XMLSTR("mount"))) {
                ICECAST_LOG_ERROR("Mount level source password defined within global <authentication> section.");
            } else {
                if (*source_password)
                    xmlFree(*source_password);
                *source_password = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
            }
        } else if (xmlStrcmp(node->name, XMLSTR("admin-password")) == 0) {
            if(admin_password)
                xmlFree(admin_password);
            admin_password = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("admin-user")) == 0) {
            if(admin_username)
                xmlFree(admin_username);
            admin_username = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("relay-password")) == 0) {
            if(relay_password)
                xmlFree(relay_password);
            relay_password = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("relay-user")) == 0) {
            if(relay_username)
                xmlFree(relay_username);
            relay_username = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("role")) == 0) {
            auth_t *auth = auth_get_authenticator(node);
            auth_stack_push(&new_style, auth);
            auth_release(auth);
        }
    } while ((node = node->next));

    if (admin_password && admin_username)
        __append_old_style_auth(&old_style, "legacy-admin", AUTH_TYPE_STATIC,
            admin_username, admin_password, NULL, "get,post,head,stats", 1, "*");

    if (relay_password && relay_username)
        __append_old_style_auth(&old_style, "legacy-relay", AUTH_TYPE_STATIC,
            relay_username, relay_password, NULL, "get", 1, "streamlist.txt");

    if (admin_password)
        xmlFree(admin_password);
    if (admin_username)
        xmlFree(admin_username);
    if (relay_password)
        xmlFree(relay_password);
    if (relay_username)
        xmlFree(relay_username);

    if (old_style && new_style) {
        auth_stack_append(old_style, new_style);
        auth_stack_release(new_style);
    } else if (new_style) {
        old_style = new_style;
    }

    /* default unauthed anonymous account */
    __append_old_style_auth(&old_style, "anonymous", AUTH_TYPE_ANONYMOUS,
        NULL, NULL, NULL, "get,post,head", 1, NULL);
    if (!old_style)
        ICECAST_LOG_ERROR("BAD. old_style=NULL");

    if (configuration->authstack)
        auth_stack_release(configuration->authstack);
    configuration->authstack = old_style;
}

static void _parse_directory(xmlDocPtr      doc,
                             xmlNodePtr     node,
                             ice_config_t  *configuration)
{
    if (configuration->num_yp_directories >= MAX_YP_DIRECTORIES) {
        ICECAST_LOG_ERROR("Maximum number of yp directories exceeded!");
        return;
    }
    do {
        if (node == NULL)
            break;
        if (xmlIsBlankNode(node))
            continue;

        if (xmlStrcmp(node->name, XMLSTR("yp-url")) == 0) {
            if (configuration->yp_url[configuration->num_yp_directories])
                xmlFree(configuration->yp_url[configuration->num_yp_directories]);
            configuration->yp_url[configuration->num_yp_directories] =
                (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("yp-url-timeout")) == 0) {
            __read_int(doc, node, &configuration->yp_url_timeout[configuration->num_yp_directories], "<yp-url-timeout> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("server")) == 0) {
            _add_server(doc, node->xmlChildrenNode, configuration);
        } else if (xmlStrcmp(node->name, XMLSTR("touch-interval")) == 0) {
            __read_int(doc, node, &configuration->yp_touch_interval[configuration->num_yp_directories], "<touch-interval> must not be empty.");
        }
    } while ((node = node->next));
    if (configuration->yp_url[configuration->num_yp_directories] == NULL)
        return;
    configuration->num_yp_directories++;
}

static void _parse_paths(xmlDocPtr      doc,
                         xmlNodePtr     node,
                         ice_config_t  *configuration)
{
    char    *temp;
    aliases *alias,
            *current,
            *last;

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

        if (xmlStrcmp(node->name, XMLSTR("basedir")) == 0) {
            if (configuration->base_dir)
                xmlFree(configuration->base_dir);
            configuration->base_dir =
                (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("logdir")) == 0) {
            if (!(temp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1))) {
                ICECAST_LOG_WARN("<logdir> setting must not be empty.");
                continue;
            }
            if (configuration->log_dir)
                xmlFree(configuration->log_dir);
            configuration->log_dir = temp;
        } else if (xmlStrcmp(node->name, XMLSTR("pidfile")) == 0) {
            if (configuration->pidfile)
                xmlFree(configuration->pidfile);
            configuration->pidfile = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("nulldevice")) == 0) {
            if (configuration->null_device)
                xmlFree(configuration->null_device);
            configuration->null_device = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("mime-types")) == 0) {
            if (configuration->mimetypes_fn)
                xmlFree(configuration->mimetypes_fn);
            configuration->mimetypes_fn = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("deny-ip")) == 0) {
            if (configuration->banfile)
                xmlFree(configuration->banfile);
            configuration->banfile = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("allow-ip")) == 0) {
            if (configuration->allowfile)
                xmlFree(configuration->allowfile);
            configuration->allowfile = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("tls-certificate")) == 0 ||
                   xmlStrcmp(node->name, XMLSTR("ssl-certificate")) == 0) {
            if (__check_node_impl(node, "generic") != 0) {
                ICECAST_LOG_WARN("Node %s uses unsupported implementation.", node->name);
                continue;
            }

            if (configuration->tls_context.cert_file)
                xmlFree(configuration->tls_context.cert_file);
            configuration->tls_context.cert_file = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("tls-allowed-ciphers")) == 0 ||
                   xmlStrcmp(node->name, XMLSTR("ssl-allowed-ciphers")) == 0) {
            if (__check_node_impl(node, "openssl") != 0) {
                ICECAST_LOG_WARN("Node %s uses unsupported implementation.", node->name);
                continue;
            }

            if (configuration->tls_context.cipher_list)
                xmlFree(configuration->tls_context.cipher_list);
            configuration->tls_context.cipher_list = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("webroot")) == 0) {
            if (!(temp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1))) {
                ICECAST_LOG_WARN("<webroot> setting must not be empty.");
                continue;
            }
            if (configuration->webroot_dir)
                xmlFree(configuration->webroot_dir);
            configuration->webroot_dir = temp;
            if (configuration->webroot_dir[strlen(configuration->webroot_dir)-1] == '/')
                configuration->webroot_dir[strlen(configuration->webroot_dir)-1] = 0;
        } else if (xmlStrcmp(node->name, XMLSTR("adminroot")) == 0) {
            if (!(temp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1))) {
                ICECAST_LOG_WARN("<adminroot> setting must not be empty.");
                continue;
            }
            if (configuration->adminroot_dir)
                xmlFree(configuration->adminroot_dir);
            configuration->adminroot_dir = (char *)temp;
            if (configuration->adminroot_dir[strlen(configuration->adminroot_dir)-1] == '/')
                configuration->adminroot_dir[strlen(configuration->adminroot_dir)-1] = 0;
        } else if (xmlStrcmp(node->name, XMLSTR("resource")) == 0 || xmlStrcmp(node->name, XMLSTR("alias")) == 0) {
            alias = malloc(sizeof(aliases));
            alias->next = NULL;
            alias->source = (char *)xmlGetProp(node, XMLSTR("source"));
            alias->destination = (char *)xmlGetProp(node, XMLSTR("destination"));
            if (!alias->destination)
                alias->destination = (char *)xmlGetProp(node, XMLSTR("dest"));

            if (!alias->source && alias->destination) {
                alias->source = alias->destination;
                alias->destination = NULL;
            } else if (!alias->source && !alias->destination) {
                xmlFree(alias->source);
                xmlFree(alias->destination);
                free(alias);
                continue;
            }
            temp = (char *)xmlGetProp(node, XMLSTR("port"));
            if(temp != NULL) {
                alias->port = util_str_to_int(temp, alias->port);
                xmlFree(temp);
            } else {
                alias->port = -1;
            }
            alias->bind_address = (char *)xmlGetProp(node, XMLSTR("bind-address"));
            alias->vhost = (char *)xmlGetProp(node, XMLSTR("vhost"));
            temp = (char *)xmlGetProp(node, XMLSTR("omode"));
            if (temp) {
                alias->omode = config_str_to_omode(temp);
                xmlFree(temp);
            } else {
                alias->omode = OMODE_DEFAULT;
            }
            current = configuration->aliases;
            last = NULL;
            while (current) {
                last = current;
                current = current->next;
            }
            if(last) {
                last->next = alias;
            } else {
                configuration->aliases = alias;
            }
        }
    } while ((node = node->next));
}

static void _parse_logging(xmlDocPtr        doc,
                           xmlNodePtr       node,
                           ice_config_t    *configuration)
{
    char *tmp;
    do {
        if (node == NULL)
            break;
        if (xmlIsBlankNode(node))
            continue;

        if (xmlStrcmp(node->name, XMLSTR("accesslog")) == 0) {
            if (!(tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1))) {
                ICECAST_LOG_WARN("<accesslog> setting must not be empty.");
                continue;
            }
            if (configuration->access_log)
                xmlFree(configuration->access_log);
            configuration->access_log = tmp;
        } else if (xmlStrcmp(node->name, XMLSTR("errorlog")) == 0) {
            if (!(tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1))) {
                ICECAST_LOG_WARN("<errorlog> setting must not be empty.");
                continue;
            }
            if (configuration->error_log)
                xmlFree(configuration->error_log);
            configuration->error_log = tmp;
        } else if (xmlStrcmp(node->name, XMLSTR("playlistlog")) == 0) {
            if (configuration->playlist_log)
                xmlFree(configuration->playlist_log);
            configuration->playlist_log = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("logsize")) == 0) {
            __read_int(doc, node, &configuration->logsize, "<logsize> must not be empty.");
        } else if (xmlStrcmp(node->name, XMLSTR("loglevel")) == 0) {
           char *tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
           configuration->loglevel = util_str_to_loglevel(tmp);
           if (tmp)
               xmlFree(tmp);
        } else if (xmlStrcmp(node->name, XMLSTR("logarchive")) == 0) {
            __read_int(doc, node, &configuration->logarchive, "<logarchive> must not be empty.");
        }
    } while ((node = node->next));
}

static void _parse_tls_context(xmlDocPtr       doc,
                               xmlNodePtr      node,
                               ice_config_t   *configuration)
{
    config_tls_context_t *context = &configuration->tls_context;

    node = node->xmlChildrenNode;

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

        if (xmlStrcmp(node->name, XMLSTR("tls-certificate")) == 0) {
            if (__check_node_impl(node, "generic") != 0) {
                ICECAST_LOG_WARN("Node %s uses unsupported implementation.", node->name);
                continue;
            }

            if (context->cert_file)
                xmlFree(context->cert_file);
            context->cert_file = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("tls-key")) == 0) {
            if (__check_node_impl(node, "generic") != 0) {
                ICECAST_LOG_WARN("Node %s uses unsupported implementation.", node->name);
                continue;
            }

            if (context->key_file)
                xmlFree(context->key_file);
            context->key_file = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else if (xmlStrcmp(node->name, XMLSTR("tls-allowed-ciphers")) == 0) {
            if (__check_node_impl(node, "openssl") != 0) {
                ICECAST_LOG_WARN("Node %s uses unsupported implementation.", node->name);
                continue;
            }

            if (context->cipher_list)
                xmlFree(context->cipher_list);
            context->cipher_list = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
        } else {
            ICECAST_LOG_ERROR("Unknown config tag: %s", node->name);
        }

   } while ((node = node->next));
}

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

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

       if (xmlStrcmp(node->name, XMLSTR("chroot")) == 0) {
           tmp = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
           configuration->chroot = util_str_to_bool(tmp);
           if (tmp)
               xmlFree(tmp);
       } else if (xmlStrcmp(node->name, XMLSTR("tls-context")) == 0) {
            _parse_tls_context(doc, node, configuration);
       } else if (xmlStrcmp(node->name, XMLSTR("changeowner")) == 0) {
           configuration->chuid = 1;
           oldnode = node;
           node = node->xmlChildrenNode;
           do {
               if (node == NULL)
                   break;
               if (xmlIsBlankNode(node))
                   continue;
               if (xmlStrcmp(node->name, XMLSTR("user")) == 0) {
                   if (configuration->user)
                       xmlFree(configuration->user);
                   configuration->user = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
               } else if (xmlStrcmp(node->name, XMLSTR("group")) == 0) {
                   if (configuration->group)
                       xmlFree(configuration->group);
                   configuration->group = (char *)xmlNodeListGetString(doc, node->xmlChildrenNode, 1);
               }
           } while((node = node->next));
           node = oldnode;
       }
   } while ((node = node->next));
}

static void _add_server(xmlDocPtr       doc,
                        xmlNodePtr      node,
                        ice_config_t   *configuration)
{
    ice_config_dir_t   *dirnode,
                       *server;
    int                 addnode;

    server = (ice_config_dir_t *)malloc(sizeof(ice_config_dir_t));
    server->touch_interval = configuration->touch_interval;
    server->host = NULL;
    addnode = 0;

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

        if (xmlStrcmp(node->name, XMLSTR("host")) == 0) {
            server->host = (char *) xmlNodeListGetString(doc,
                node->xmlChildrenNode, 1);
            addnode = 1;
        } else if (xmlStrcmp(node->name, XMLSTR("touch-interval")) == 0) {
            __read_int(doc, node, &server->touch_interval, "<touch-interval> must not be empty.");
        }
        server->next = NULL;
    } while ((node = node->next));

    if (addnode) {
        dirnode = configuration->dir_list;
        if (dirnode == NULL) {
            configuration->dir_list = server;
        } else {
            while (dirnode->next) dirnode = dirnode->next;
            dirnode->next = server;
        }

        server = NULL;
        addnode = 0;
    } else {
        free (server);
    }
}

static void _parse_events(event_registration_t **events, xmlNodePtr node)
{
    while (node) {
        if (xmlStrcmp(node->name, XMLSTR("event")) == 0) {
            event_registration_t *reg = event_new_from_xml_node(node);
            event_registration_push(events, reg);
            event_registration_release(reg);
        }
        node = node->next;
    }
}

config_options_t *config_parse_options(xmlNodePtr node)
{
    config_options_t *ret = NULL;
    config_options_t *cur = NULL;

    if (!node)
        return NULL;

    node = node->xmlChildrenNode;

    if (!node)
        return NULL;

    do {
        if (xmlStrcmp(node->name, XMLSTR("option")) != 0)
            continue;
        if (cur) {
           cur->next = calloc(1, sizeof(config_options_t));
           cur = cur->next;
        } else {
          cur = ret = calloc(1, sizeof(config_options_t));
        }

        cur->type  = (char *)xmlGetProp(node, XMLSTR("type"));
        cur->name  = (char *)xmlGetProp(node, XMLSTR("name"));
        cur->value = (char *)xmlGetProp(node, XMLSTR("value"));

        /* map type="default" to NULL. This is to avoid many extra xmlCharStrdup()s. */
        if (cur->type && strcmp(cur->type, "default") == 0) {
            xmlFree(cur->type);
            cur->type = NULL;
        }
    } while ((node = node->next));

    return ret;
}

void config_clear_options(config_options_t *options)
{
    while (options) {
        config_options_t *opt = options;
        options = opt->next;
        if (opt->type)
            xmlFree(opt->type);
        if (opt->name)
            xmlFree(opt->name);
        if (opt->value)
            xmlFree(opt->value);
        free(opt);
    }
}

static void merge_mounts(mount_proxy * dst, mount_proxy * src)
{
    ice_config_http_header_t *http_header_next;
    ice_config_http_header_t **http_header_tail;

    if (!dst || !src)
        return;

    if (!dst->dumpfile)
        dst->dumpfile = (char*)xmlStrdup((xmlChar*)src->dumpfile);
    if (!dst->intro_filename)
        dst->intro_filename = (char*)xmlStrdup((xmlChar*)src->intro_filename);
    if (!dst->fallback_when_full)
        dst->fallback_when_full = src->fallback_when_full;
    if (dst->max_listeners == -1)
        dst->max_listeners = src->max_listeners;
    if (!dst->fallback_mount)
        dst->fallback_mount = (char*)xmlStrdup((xmlChar*)src->fallback_mount);
    if (!dst->fallback_override)
        dst->fallback_override = src->fallback_override;
    if (!dst->no_mount)
        dst->no_mount = src->no_mount;
    if (dst->burst_size == -1)
        dst->burst_size = src->burst_size;
    if (!dst->queue_size_limit)
        dst->queue_size_limit = src->queue_size_limit;
    if (!dst->hidden)
        dst->hidden = src->hidden;
    if (!dst->source_timeout)
        dst->source_timeout = src->source_timeout;
    if (!dst->charset)
        dst->charset = (char*)xmlStrdup((xmlChar*)src->charset);
    if (dst->mp3_meta_interval == -1)
        dst->mp3_meta_interval = src->mp3_meta_interval;
    if (!dst->cluster_password)
        dst->cluster_password = (char*)xmlStrdup((xmlChar*)src->cluster_password);
    if (!dst->max_listener_duration)
        dst->max_listener_duration = src->max_listener_duration;
    if (!dst->stream_name)
        dst->stream_name = (char*)xmlStrdup((xmlChar*)src->stream_name);
    if (!dst->stream_description)
        dst->stream_description = (char*)xmlStrdup((xmlChar*)src->stream_description);
    if (!dst->stream_url)
        dst->stream_url = (char*)xmlStrdup((xmlChar*)src->stream_url);
    if (!dst->stream_genre)
        dst->stream_genre = (char*)xmlStrdup((xmlChar*)src->stream_genre);
    if (!dst->bitrate)
        dst->bitrate = (char*)xmlStrdup((xmlChar*)src->bitrate);
    if (!dst->type)
        dst->type = (char*)xmlStrdup((xmlChar*)src->type);
    if (!dst->subtype)
        dst->subtype = (char*)xmlStrdup((xmlChar*)src->subtype);
    if (dst->yp_public == -1)
        dst->yp_public = src->yp_public;
    if (dst->max_history == -1)
        dst->max_history = src->max_history;

    if (dst->http_headers) {
        http_header_next = dst->http_headers;
        while (http_header_next->next) http_header_next = http_header_next->next;
        http_header_tail = &(http_header_next->next);
    } else {
        http_header_tail = &(dst->http_headers);
    }
    *http_header_tail = config_copy_http_header(src->http_headers);
}

static inline void _merge_mounts_all(ice_config_t *c) {
    mount_proxy *mountinfo = c->mounts;
    mount_proxy *default_mount;

    for (; mountinfo; mountinfo = mountinfo->next) {
        if (mountinfo->mounttype != MOUNT_TYPE_NORMAL)
            continue;
        default_mount = config_find_mount(c, mountinfo->mountname, MOUNT_TYPE_DEFAULT);
        merge_mounts(mountinfo, default_mount);
    }
}

/* return the mount details that match the supplied mountpoint */
mount_proxy *config_find_mount (ice_config_t        *config,
                                const char          *mount,
                                mount_type           type)
{
    mount_proxy *mountinfo = config->mounts;

    /* invalid args */
    if (!mount && type != MOUNT_TYPE_DEFAULT)
        return NULL;

    for (; mountinfo; mountinfo = mountinfo->next) {
        if (mountinfo->mounttype != type)
            continue;
        if (!mount && !mountinfo->mountname)
            break;
        if (mountinfo->mounttype == MOUNT_TYPE_NORMAL) {
            if (!mount || !mountinfo->mountname)
                continue;
            if (strcmp(mountinfo->mountname, mount) == 0)
                break;
        } else if (mountinfo->mounttype == MOUNT_TYPE_DEFAULT) {
            if (!mount || !mountinfo->mountname)
                break;
#ifndef _WIN32
            if (fnmatch(mountinfo->mountname, mount, FNM_PATHNAME) == 0)
                break;
#else
            if (strcmp(mountinfo->mountname, mount) == 0)
                break;
#endif
        }
    }
    /* retry with default mount */
    if (!mountinfo && type == MOUNT_TYPE_NORMAL)
        mountinfo = config_find_mount(config, mount, MOUNT_TYPE_DEFAULT);
    return mountinfo;
}

/* Helper function to locate the configuration details of the listening
 * socket
 */
listener_t *config_get_listen_sock(ice_config_t *config, connection_t *con)
{
    listener_t *listener;
    int i = 0;

    listener = config->listen_sock;
    while (listener) {
        if (i >= global.server_sockets) {
            listener = NULL;
        } else {
            if (global.serversock[i] == con->serversock)
                break;
            listener = listener->next;
            i++;
        }
    }
    return listener;
}