static void queue_auth_client (auth_client *auth_user, mount_proxy *mountinfo)
{
auth_t *auth;
if (auth_user == NULL)
return;
auth_user->next = NULL;
if (mountinfo)
{
auth = mountinfo->auth;
thread_mutex_lock (&auth->lock);
if (auth_user->client)
auth_user->client->auth = auth;
auth->refcount++;
}
else
{
if (auth_user->client == NULL || auth_user->client->auth == NULL)
{
ICECAST_LOG_WARN("internal state is incorrect for %p", auth_user->client);
return;
}
auth = auth_user->client->auth;
thread_mutex_lock (&auth->lock);
}
ICECAST_LOG_DEBUG("...refcount on auth_t %s is now %d", auth->mount, auth->refcount);
*auth->tailp = auth_user;
auth->tailp = &auth_user->next;
auth->pending_count++;
ICECAST_LOG_INFO("auth on %s has %d pending", auth->mount, auth->pending_count);
thread_mutex_unlock (&auth->lock);
}
/* create a client_t with the provided connection and parser details. Return
* 0 on success, -1 if server limit has been reached. In either case a
* client_t is returned just in case a message needs to be returned. Should
* be called with global lock held.
*/
int client_create (client_t **c_ptr, connection_t *con, http_parser_t *parser)
{
ice_config_t *config;
client_t *client = (client_t *)calloc(1, sizeof(client_t));
int ret = -1;
if (client == NULL)
abort();
config = config_get_config ();
global.clients++;
if (config->client_limit < global.clients)
ICECAST_LOG_WARN("server client limit reached (%d/%d)", config->client_limit, global.clients);
else
ret = 0;
config_release_config ();
stats_event_args (NULL, "clients", "%d", global.clients);
client->con = con;
client->parser = parser;
client->refbuf = refbuf_new (PER_CLIENT_REFBUF_SIZE);
client->refbuf->len = 0; /* force reader code to ignore buffer contents */
client->pos = 0;
client->write_to_client = format_generic_write_to_client;
*c_ptr = client;
return ret;
}
/* wrapper for stats_event, this takes a charset to convert from */
void stats_event_conv(const char *mount, const char *name, const char *value, const char *charset)
{
const char *metadata = value;
xmlBufferPtr conv = xmlBufferCreate ();
if (charset)
{
xmlCharEncodingHandlerPtr handle = xmlFindCharEncodingHandler (charset);
if (handle)
{
xmlBufferPtr raw = xmlBufferCreate ();
xmlBufferAdd (raw, (const xmlChar *)value, strlen (value));
if (xmlCharEncInFunc (handle, conv, raw) > 0)
metadata = (char *)xmlBufferContent (conv);
xmlBufferFree (raw);
xmlCharEncCloseFunc (handle);
}
else
ICECAST_LOG_WARN("No charset found for \"%s\"", charset);
}
stats_event (mount, name, metadata);
xmlBufferFree (conv);
}
format_type_t format_get_type (const char *contenttype)
{
if(strcmp(contenttype, "application/x-ogg") == 0)
return FORMAT_TYPE_OGG; /* Backwards compatibility */
else if(strcmp(contenttype, "application/ogg") == 0)
return FORMAT_TYPE_OGG; /* Now blessed by IANA */
else if(strcmp(contenttype, "audio/ogg") == 0)
return FORMAT_TYPE_OGG;
else if(strcmp(contenttype, "video/ogg") == 0)
return FORMAT_TYPE_OGG;
else if(strcmp(contenttype, "audio/webm") == 0)
return FORMAT_TYPE_EBML;
else if(strcmp(contenttype, "video/webm") == 0)
return FORMAT_TYPE_EBML;
else if(strcmp(contenttype, "audio/x-matroska") == 0)
return FORMAT_TYPE_EBML;
else if(strcmp(contenttype, "video/x-matroska") == 0)
return FORMAT_TYPE_EBML;
else if(strcmp(contenttype, "video/x-matroska-3d") == 0)
return FORMAT_TYPE_EBML;
else
/* We default to the Generic format handler, which
can handle many more formats than just mp3.
Let's warn that this is not well supported */
ICECAST_LOG_WARN("Unsupported or legacy stream type: \"%s\". Falling back to generic minimal handler for best effort.", contenttype);
return FORMAT_TYPE_GENERIC;
}
static void url_stream_auth (auth_client *auth_user)
{
ice_config_t *config;
int port;
client_t *client = auth_user->client;
auth_url *url = client->auth->state;
char *mount, *host, *user, *pass, *ipaddr, *admin="";
char post [4096];
if (strchr (url->stream_auth, '@') == NULL)
{
if (url->userpwd)
curl_easy_setopt (url->handle, CURLOPT_USERPWD, url->userpwd);
else
curl_easy_setopt (url->handle, CURLOPT_USERPWD, "");
}
else
curl_easy_setopt (url->handle, CURLOPT_USERPWD, "");
curl_easy_setopt (url->handle, CURLOPT_URL, url->stream_auth);
curl_easy_setopt (url->handle, CURLOPT_POSTFIELDS, post);
curl_easy_setopt (url->handle, CURLOPT_WRITEHEADER, auth_user);
if (strcmp (auth_user->mount, httpp_getvar (client->parser, HTTPP_VAR_URI)) != 0)
admin = "&admin=1";
mount = util_url_escape (auth_user->mount);
config = config_get_config ();
host = util_url_escape (config->hostname);
port = config->port;
config_release_config ();
ipaddr = util_url_escape (client->con->ip);
if (client->username) {
user = util_url_escape(client->username);
} else {
user = strdup("");
}
if (client->password) {
pass = util_url_escape(client->password);
} else {
pass = strdup("");
}
snprintf (post, sizeof (post),
"action=stream_auth&mount=%s&ip=%s&server=%s&port=%d&user=%s&pass=%s%s",
mount, ipaddr, host, port, user, pass, admin);
free (ipaddr);
free (user);
free (pass);
free (mount);
free (host);
client->authenticated = 0;
if (curl_easy_perform (url->handle))
ICECAST_LOG_WARN("auth to server %s failed with %s", url->stream_auth, url->errormsg);
}
static void write_mp3_to_file (struct source_tag *source, refbuf_t *refbuf)
{
if (refbuf->len == 0)
return;
if (fwrite (refbuf->data, 1, refbuf->len, source->dumpfile) < (size_t)refbuf->len)
{
ICECAST_LOG_WARN("Write to dump file failed, disabling");
fclose (source->dumpfile);
source->dumpfile = NULL;
}
}
/* simple name=tag stat create/update */
void stats_event(const char *source, const char *name, const char *value)
{
stats_event_t *event;
if (value && xmlCheckUTF8 ((unsigned char *)value) == 0)
{
ICECAST_LOG_WARN("seen non-UTF8 data, probably incorrect metadata (%s, %s)", name, value);
return;
}
event = build_event(source, name, value);
if (event)
queue_global_event(event);
}
static int write_ogg_data (struct source_tag *source, refbuf_t *refbuf)
{
int ret = 1;
if (fwrite (refbuf->data, 1, refbuf->len, source->dumpfile) != refbuf->len)
{
ICECAST_LOG_WARN("Write to dump file failed, disabling");
fclose (source->dumpfile);
source->dumpfile = NULL;
ret = 0;
}
return ret;
}
static void url_stream_end (auth_client *auth_user)
{
char *mount, *server;
ice_config_t *config = config_get_config ();
mount_proxy *mountinfo = config_find_mount (config, auth_user->mount, MOUNT_TYPE_NORMAL);
auth_t *auth = mountinfo->auth;
auth_url *url = auth->state;
char *stream_end_url;
int port;
char post [4096];
if (url->stream_end == NULL)
{
config_release_config ();
return;
}
server = util_url_escape (config->hostname);
port = config->port;
stream_end_url = strdup (url->stream_end);
/* we don't want this auth disappearing from under us while
* the connection is in progress */
mountinfo->auth->refcount++;
config_release_config ();
mount = util_url_escape (auth_user->mount);
snprintf (post, sizeof (post),
"action=mount_remove&mount=%s&server=%s&port=%d", mount, server, port);
free (server);
free (mount);
if (strchr (url->stream_end, '@') == NULL)
{
if (url->userpwd)
curl_easy_setopt (url->handle, CURLOPT_USERPWD, url->userpwd);
else
curl_easy_setopt (url->handle, CURLOPT_USERPWD, "");
}
else
curl_easy_setopt (url->handle, CURLOPT_USERPWD, "");
curl_easy_setopt (url->handle, CURLOPT_URL, url->stream_end);
curl_easy_setopt (url->handle, CURLOPT_POSTFIELDS, post);
curl_easy_setopt (url->handle, CURLOPT_WRITEHEADER, auth_user);
if (curl_easy_perform (url->handle))
ICECAST_LOG_WARN("auth to server %s failed with %s", stream_end_url, url->errormsg);
auth_release (auth);
free (stream_end_url);
return;
}
/* Called from auth thread to process any request for source client
* authentication. Only applies to source clients, not relays.
*/
static void stream_auth_callback (auth_t *auth, auth_client *auth_user)
{
client_t *client = auth_user->client;
if (auth->stream_auth)
auth->stream_auth (auth_user);
auth_release (auth);
client->auth = NULL;
if (client->authenticated)
auth_postprocess_source (auth_user);
else
ICECAST_LOG_WARN("Failed auth for source \"%s\"", auth_user->mount);
}
/* helper to apply specialised changes to a stats node */
static void modify_node_event(stats_node_t *node, stats_event_t *event)
{
char *str;
if (event->action == STATS_EVENT_HIDDEN)
{
if (event->value)
node->hidden = 1;
else
node->hidden = 0;
return;
}
if (event->action != STATS_EVENT_SET)
{
int64_t value = 0;
switch (event->action)
{
case STATS_EVENT_INC:
value = atoi (node->value)+1;
break;
case STATS_EVENT_DEC:
value = atoi (node->value)-1;
break;
case STATS_EVENT_ADD:
value = atoi (node->value)+atoi (event->value);
break;
case STATS_EVENT_SUB:
value = atoll (node->value) - atoll (event->value);
break;
default:
ICECAST_LOG_WARN("unhandled event (%d) for %s", event->action, event->source);
break;
}
str = malloc (16);
snprintf (str, 16, "%" PRId64, value);
if (event->value == NULL)
event->value = strdup (str);
}
else
str = (char *)strdup (event->value);
free (node->value);
node->value = str;
if (event->source)
ICECAST_LOG_DEBUG("update \"%s\" %s (%s)", event->source, node->name, node->value);
else
ICECAST_LOG_DEBUG("update global %s (%s)", node->name, node->value);
}
static auth_client *auth_client_setup (const char *mount, client_t *client)
{
/* This will look something like "Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==" */
const char *header = httpp_getvar(client->parser, "authorization");
char *userpass, *tmp;
char *username, *password;
auth_client *auth_user;
do
{
if (header == NULL)
break;
if (strncmp(header, "Basic ", 6) == 0)
{
userpass = util_base64_decode (header+6);
if (userpass == NULL)
{
ICECAST_LOG_WARN("Base64 decode of Authorization header \"%s\" failed",
header+6);
break;
}
tmp = strchr(userpass, ':');
if (tmp == NULL)
{
free (userpass);
break;
}
*tmp = 0;
username = userpass;
password = tmp+1;
client->username = strdup (username);
client->password = strdup (password);
free (userpass);
break;
}
ICECAST_LOG_INFO("unhandled authorization header: %s", header);
} while (0);
auth_user = calloc (1, sizeof(auth_client));
auth_user->mount = strdup (mount);
auth_user->client = client;
return auth_user;
}
static xsltStylesheetPtr xslt_get_stylesheet(const char *fn) {
int i;
int empty = -1;
struct stat file;
if(stat(fn, &file)) {
ICECAST_LOG_WARN("Error checking for stylesheet file \"%s\": %s", fn,
strerror(errno));
return NULL;
}
for(i=0; i < CACHESIZE; i++) {
if(cache[i].filename)
{
#ifdef _WIN32
if(!stricmp(fn, cache[i].filename))
#else
if(!strcmp(fn, cache[i].filename))
#endif
{
if(file.st_mtime > cache[i].last_modified)
{
xsltFreeStylesheet(cache[i].stylesheet);
cache[i].last_modified = file.st_mtime;
cache[i].stylesheet = xsltParseStylesheetFile (XMLSTR(fn));
cache[i].cache_age = time(NULL);
}
ICECAST_LOG_DEBUG("Using cached sheet %i", i);
return cache[i].stylesheet;
}
}
else
empty = i;
}
if(empty>=0)
i = empty;
else
i = evict_cache_entry();
cache[i].last_modified = file.st_mtime;
cache[i].filename = strdup(fn);
cache[i].stylesheet = xsltParseStylesheetFile (XMLSTR(fn));
cache[i].cache_age = time(NULL);
return cache[i].stylesheet;
}
/* printf style formatting for stat create/update */
void stats_event_args(const char *source, char *name, char *format, ...)
{
char buf[1024];
va_list val;
int ret;
if (name == NULL)
return;
va_start(val, format);
ret = vsnprintf(buf, sizeof(buf), format, val);
va_end(val);
if (ret < 0 || (unsigned int)ret >= sizeof (buf))
{
ICECAST_LOG_WARN("problem with formatting %s stat %s",
source==NULL ? "global" : source, name);
return;
}
stats_event(source, name, buf);
}
static int get_authenticator (auth_t *auth, config_options_t *options)
{
if (auth->type == NULL)
{
ICECAST_LOG_WARN("no authentication type defined");
return -1;
}
do
{
ICECAST_LOG_DEBUG("type is %s", auth->type);
if (strcmp (auth->type, "url") == 0)
{
#ifdef HAVE_AUTH_URL
if (auth_get_url_auth (auth, options) < 0)
return -1;
break;
#else
ICECAST_LOG_ERROR("Auth URL disabled");
return -1;
#endif
}
if (strcmp (auth->type, "htpasswd") == 0)
{
if (auth_get_htpasswd_auth (auth, options) < 0)
return -1;
break;
}
ICECAST_LOG_ERROR("Unrecognised authenticator type: \"%s\"", auth->type);
return -1;
} while (0);
while (options)
{
if (strcmp (options->name, "allow_duplicate_users") == 0)
auth->allow_duplicate_users = atoi ((char*)options->value);
options = options->next;
}
return 0;
}
/* Add a listener. Check for any mount information that states any
* authentication to be used.
*/
void auth_add_listener (const char *mount, client_t *client)
{
mount_proxy *mountinfo;
ice_config_t *config = config_get_config();
mountinfo = config_find_mount (config, mount, MOUNT_TYPE_NORMAL);
if (mountinfo && mountinfo->no_mount)
{
config_release_config ();
client_send_403 (client, "mountpoint unavailable");
return;
}
if (mountinfo && mountinfo->auth)
{
auth_client *auth_user;
if (mountinfo->auth->pending_count > 100)
{
config_release_config ();
ICECAST_LOG_WARN("too many clients awaiting authentication");
client_send_403 (client, "busy, please try again later");
return;
}
auth_user = auth_client_setup (mount, client);
auth_user->process = auth_new_listener;
ICECAST_LOG_INFO("adding client for authentication");
queue_auth_client (auth_user, mountinfo);
config_release_config ();
}
else
{
int ret = add_authenticated_listener (mount, mountinfo, client);
config_release_config ();
if (ret < 0)
client_send_403 (client, "max listeners reached");
}
}
static auth_result url_add_listener (auth_client *auth_user)
{
client_t *client = auth_user->client;
auth_t *auth = client->auth;
auth_url *url = auth->state;
int res = 0, port;
const char *agent;
char *user_agent, *username, *password;
const char *mountreq;
char *mount, *ipaddr, *server;
ice_config_t *config;
char *userpwd = NULL, post [4096];
ssize_t post_offset;
char *pass_headers, *cur_header, *next_header;
const char *header_val;
char *header_valesc;
if (url->addurl == NULL)
return AUTH_OK;
config = config_get_config ();
server = util_url_escape (config->hostname);
port = config->port;
config_release_config ();
agent = httpp_getvar (client->parser, "user-agent");
if (agent)
user_agent = util_url_escape (agent);
else
user_agent = strdup ("-");
if (client->username)
username = util_url_escape (client->username);
else
username = strdup ("");
if (client->password)
password = util_url_escape (client->password);
else
password = strdup ("");
/* get the full uri (with query params if available) */
mountreq = httpp_getvar (client->parser, HTTPP_VAR_RAWURI);
if (mountreq == NULL)
mountreq = httpp_getvar (client->parser, HTTPP_VAR_URI);
mount = util_url_escape (mountreq);
ipaddr = util_url_escape (client->con->ip);
post_offset = snprintf (post, sizeof (post),
"action=listener_add&server=%s&port=%d&client=%lu&mount=%s"
"&user=%s&pass=%s&ip=%s&agent=%s",
server, port, client->con->id, mount, username,
password, ipaddr, user_agent);
free (server);
free (mount);
free (user_agent);
free (username);
free (password);
free (ipaddr);
pass_headers = NULL;
if (url->pass_headers)
pass_headers = strdup (url->pass_headers);
if (pass_headers)
{
cur_header = pass_headers;
while (cur_header)
{
next_header = strstr (cur_header, ",");
if (next_header)
{
*next_header=0;
next_header++;
}
header_val = httpp_getvar (client->parser, cur_header);
if (header_val)
{
header_valesc = util_url_escape (header_val);
post_offset += snprintf (post+post_offset, sizeof (post)-post_offset, "&%s%s=%s",
url->prefix_headers ? url->prefix_headers : "",
cur_header, header_valesc);
free (header_valesc);
}
cur_header = next_header;
}
}
if (strchr (url->addurl, '@') == NULL)
{
if (url->userpwd)
curl_easy_setopt (url->handle, CURLOPT_USERPWD, url->userpwd);
else
{
/* auth'd requests may not have a user/pass, but may use query args */
if (client->username && client->password)
{
size_t len = strlen (client->username) + strlen (client->password) + 2;
userpwd = malloc (len);
snprintf (userpwd, len, "%s:%s", client->username, client->password);
curl_easy_setopt (url->handle, CURLOPT_USERPWD, userpwd);
}
else
curl_easy_setopt (url->handle, CURLOPT_USERPWD, "");
}
}
else
{
/* url has user/pass but libcurl may need to clear any existing settings */
curl_easy_setopt (url->handle, CURLOPT_USERPWD, "");
}
curl_easy_setopt (url->handle, CURLOPT_URL, url->addurl);
curl_easy_setopt (url->handle, CURLOPT_POSTFIELDS, post);
curl_easy_setopt (url->handle, CURLOPT_WRITEHEADER, auth_user);
url->errormsg[0] = '\0';
res = curl_easy_perform (url->handle);
free (userpwd);
if (res)
{
ICECAST_LOG_WARN("auth to server %s failed with %s", url->addurl, url->errormsg);
return AUTH_FAILED;
}
/* we received a response, lets see what it is */
if (client->authenticated)
return AUTH_OK;
ICECAST_LOG_INFO("client auth (%s) failed with \"%s\"", url->addurl, url->errormsg);
return AUTH_FAILED;
}
static auth_result url_remove_listener (auth_client *auth_user)
{
client_t *client = auth_user->client;
auth_t *auth = client->auth;
auth_url *url = auth->state;
time_t duration = time(NULL) - client->con->con_time;
char *username, *password, *mount, *server;
const char *mountreq;
ice_config_t *config;
int port;
char *userpwd = NULL, post [4096];
const char *agent;
char *user_agent, *ipaddr;
if (url->removeurl == NULL)
return AUTH_OK;
config = config_get_config ();
server = util_url_escape (config->hostname);
port = config->port;
config_release_config ();
agent = httpp_getvar (client->parser, "user-agent");
if (agent)
user_agent = util_url_escape (agent);
else
user_agent = strdup ("-");
if (client->username)
username = util_url_escape (client->username);
else
username = strdup ("");
if (client->password)
password = util_url_escape (client->password);
else
password = strdup ("");
/* get the full uri (with query params if available) */
mountreq = httpp_getvar (client->parser, HTTPP_VAR_RAWURI);
if (mountreq == NULL)
mountreq = httpp_getvar (client->parser, HTTPP_VAR_URI);
mount = util_url_escape (mountreq);
ipaddr = util_url_escape (client->con->ip);
snprintf (post, sizeof (post),
"action=listener_remove&server=%s&port=%d&client=%lu&mount=%s"
"&user=%s&pass=%s&duration=%lu&ip=%s&agent=%s",
server, port, client->con->id, mount, username,
password, (long unsigned)duration, ipaddr, user_agent);
free (server);
free (mount);
free (username);
free (password);
free (ipaddr);
free (user_agent);
if (strchr (url->removeurl, '@') == NULL)
{
if (url->userpwd)
curl_easy_setopt (url->handle, CURLOPT_USERPWD, url->userpwd);
else
{
/* auth'd requests may not have a user/pass, but may use query args */
if (client->username && client->password)
{
size_t len = strlen (client->username) + strlen (client->password) + 2;
userpwd = malloc (len);
snprintf (userpwd, len, "%s:%s", client->username, client->password);
curl_easy_setopt (url->handle, CURLOPT_USERPWD, userpwd);
}
else
curl_easy_setopt (url->handle, CURLOPT_USERPWD, "");
}
}
else
{
/* url has user/pass but libcurl may need to clear any existing settings */
curl_easy_setopt (url->handle, CURLOPT_USERPWD, "");
}
curl_easy_setopt (url->handle, CURLOPT_URL, url->removeurl);
curl_easy_setopt (url->handle, CURLOPT_POSTFIELDS, post);
curl_easy_setopt (url->handle, CURLOPT_WRITEHEADER, auth_user);
if (curl_easy_perform (url->handle))
ICECAST_LOG_WARN("auth to server %s failed with %s", url->removeurl, url->errormsg);
free (userpwd);
return AUTH_OK;
}
void xslt_transform(xmlDocPtr doc, const char *xslfilename, client_t *client)
{
xmlDocPtr res;
xsltStylesheetPtr cur;
xmlChar *string;
int len, problem = 0;
const char *mediatype = NULL;
const char *charset = NULL;
xmlSetGenericErrorFunc ("", log_parse_failure);
xsltSetGenericErrorFunc ("", log_parse_failure);
thread_mutex_lock(&xsltlock);
cur = xslt_get_stylesheet(xslfilename);
if (cur == NULL)
{
thread_mutex_unlock(&xsltlock);
ICECAST_LOG_ERROR("problem reading stylesheet \"%s\"", xslfilename);
client_send_404 (client, "Could not parse XSLT file");
return;
}
res = xsltApplyStylesheet(cur, doc, NULL);
if (xsltSaveResultToString (&string, &len, res, cur) < 0)
problem = 1;
/* lets find out the content type and character encoding to use */
if (cur->encoding)
charset = (char *)cur->encoding;
if (cur->mediaType)
mediatype = (char *)cur->mediaType;
else
{
/* check method for the default, a missing method assumes xml */
if (cur->method && xmlStrcmp (cur->method, XMLSTR("html")) == 0)
mediatype = "text/html";
else
if (cur->method && xmlStrcmp (cur->method, XMLSTR("text")) == 0)
mediatype = "text/plain";
else
mediatype = "text/xml";
}
if (problem == 0)
{
ssize_t ret;
int failed = 0;
refbuf_t *refbuf;
size_t full_len = strlen (mediatype) + len + 1024;
if (full_len < 4096)
full_len = 4096;
refbuf = refbuf_new (full_len);
if (string == NULL)
string = xmlCharStrdup ("");
ret = util_http_build_header(refbuf->data, full_len, 0, 0, 200, NULL, mediatype, charset, NULL, NULL);
if (ret == -1) {
ICECAST_LOG_ERROR("Dropping client as we can not build response headers.");
client_send_500(client, "Header generation failed.");
} else {
if ( full_len < (ret + len + 64) ) {
void *new_data;
full_len = ret + len + 64;
new_data = realloc(refbuf->data, full_len);
if (new_data) {
ICECAST_LOG_DEBUG("Client buffer reallocation succeeded.");
refbuf->data = new_data;
refbuf->len = full_len;
ret = util_http_build_header(refbuf->data, full_len, 0, 0, 200, NULL, mediatype, charset, NULL, NULL);
if (ret == -1) {
ICECAST_LOG_ERROR("Dropping client as we can not build response headers.");
client_send_500(client, "Header generation failed.");
failed = 1;
}
} else {
ICECAST_LOG_ERROR("Client buffer reallocation failed. Dropping client.");
client_send_500(client, "Buffer reallocation failed.");
failed = 1;
}
}
if (!failed) {
snprintf(refbuf->data + ret, full_len - ret, "Content-Length: %d\r\n\r\n%s", len, string);
client->respcode = 200;
client_set_queue (client, NULL);
client->refbuf = refbuf;
refbuf->len = strlen (refbuf->data);
fserve_add_client (client, NULL);
}
}
xmlFree (string);
}
else
{
ICECAST_LOG_WARN("problem applying stylesheet \"%s\"", xslfilename);
client_send_404 (client, "XSLT problem");
}
thread_mutex_unlock (&xsltlock);
xmlFreeDoc(res);
}
static void ebml_write_buf_to_file_fail (source_t *source)
{
ICECAST_LOG_WARN("Write to dump file failed, disabling");
fclose (source->dumpfile);
source->dumpfile = NULL;
}
auth_t *auth_get_authenticator (xmlNodePtr node)
{
auth_t *auth = calloc (1, sizeof (auth_t));
config_options_t *options = NULL, **next_option = &options;
xmlNodePtr option;
if (auth == NULL)
return NULL;
option = node->xmlChildrenNode;
while (option)
{
xmlNodePtr current = option;
option = option->next;
if (xmlStrcmp (current->name, XMLSTR("option")) == 0)
{
config_options_t *opt = calloc (1, sizeof (config_options_t));
opt->name = (char *)xmlGetProp (current, XMLSTR("name"));
if (opt->name == NULL)
{
free(opt);
continue;
}
opt->value = (char *)xmlGetProp (current, XMLSTR("value"));
if (opt->value == NULL)
{
xmlFree (opt->name);
free (opt);
continue;
}
*next_option = opt;
next_option = &opt->next;
}
else
if (xmlStrcmp (current->name, XMLSTR("text")) != 0)
ICECAST_LOG_WARN("unknown auth setting (%s)", current->name);
}
auth->type = (char*)xmlGetProp (node, XMLSTR("type"));
if (get_authenticator (auth, options) < 0)
{
xmlFree (auth->type);
free (auth);
auth = NULL;
}
else
{
auth->tailp = &auth->head;
thread_mutex_create (&auth->lock);
auth->refcount = 1;
auth->running = 1;
auth->thread = thread_create ("auth thread", auth_run_thread, auth, THREAD_ATTACHED);
}
while (options)
{
config_options_t *opt = options;
options = opt->next;
xmlFree (opt->name);
xmlFree (opt->value);
free (opt);
}
return auth;
}
/* client has requested a file, so check for it and send the file. Do not
* refer to the client_t afterwards. return 0 for success, -1 on error.
*/
int fserve_client_create (client_t *httpclient)
{
int bytes;
struct stat file_buf;
const char *range = NULL;
off_t new_content_len = 0;
off_t rangenumber = 0, content_length;
int rangeproblem = 0;
int ret = 0;
char *fullpath;
int m3u_requested = 0, m3u_file_available = 1;
const char * xslt_playlist_requested = NULL;
int xslt_playlist_file_available = 1;
ice_config_t *config;
FILE *file;
fullpath = util_get_path_from_normalised_uri(httpclient->uri);
ICECAST_LOG_INFO("checking for file %H (%H)", httpclient->uri, fullpath);
if (strcmp (util_get_extension (fullpath), "m3u") == 0)
m3u_requested = 1;
if (strcmp (util_get_extension (fullpath), "xspf") == 0)
xslt_playlist_requested = "xspf.xsl";
if (strcmp (util_get_extension (fullpath), "vclt") == 0)
xslt_playlist_requested = "vclt.xsl";
/* check for the actual file */
if (stat (fullpath, &file_buf) != 0)
{
/* the m3u can be generated, but send an m3u file if available */
if (m3u_requested == 0 && xslt_playlist_requested == NULL)
{
ICECAST_LOG_WARN("req for file \"%H\" %s", fullpath, strerror (errno));
client_send_error_by_id(httpclient, ICECAST_ERROR_FSERV_FILE_NOT_FOUND);
free (fullpath);
return -1;
}
m3u_file_available = 0;
xslt_playlist_file_available = 0;
}
httpclient->refbuf->len = PER_CLIENT_REFBUF_SIZE;
if (m3u_requested && m3u_file_available == 0)
{
char *sourceuri = strdup(httpclient->uri);
char *dot = strrchr(sourceuri, '.');
*dot = 0;
httpclient->respcode = 200;
ret = util_http_build_header (httpclient->refbuf->data, BUFSIZE, 0,
0, 200, NULL,
"audio/x-mpegurl", NULL, "", NULL, httpclient);
if (ret == -1 || ret >= (BUFSIZE - 512)) { /* we want at least 512 bytes left for the content of the playlist */
ICECAST_LOG_ERROR("Dropping client as we can not build response headers.");
client_send_error_by_id(httpclient, ICECAST_ERROR_GEN_HEADER_GEN_FAILED);
free(sourceuri);
return -1;
}
client_get_baseurl(httpclient, NULL, httpclient->refbuf->data + ret, BUFSIZE - ret, NULL, NULL, NULL, sourceuri, "\r\n");
httpclient->refbuf->len = strlen (httpclient->refbuf->data);
fserve_add_client (httpclient, NULL);
free (sourceuri);
free (fullpath);
return 0;
}
if (xslt_playlist_requested && xslt_playlist_file_available == 0)
{
xmlDocPtr doc;
char *reference = strdup(httpclient->uri);
char *eol = strrchr (reference, '.');
if (eol)
*eol = '\0';
doc = stats_get_xml (0, reference, httpclient);
free (reference);
admin_send_response (doc, httpclient, ADMIN_FORMAT_HTML, xslt_playlist_requested);
xmlFreeDoc(doc);
free (fullpath);
return 0;
}
/* on demand file serving check */
config = config_get_config();
if (config->fileserve == 0)
{
ICECAST_LOG_DEBUG("on demand file \"%H\" refused. Serving static files has been disabled in the config", fullpath);
client_send_error_by_id(httpclient, ICECAST_ERROR_FSERV_FILE_NOT_FOUND);
config_release_config();
free(fullpath);
return -1;
}
config_release_config();
if (S_ISREG (file_buf.st_mode) == 0)
{
client_send_error_by_id(httpclient, ICECAST_ERROR_FSERV_FILE_NOT_FOUND);
ICECAST_LOG_WARN("found requested file but there is no handler for it: %H", fullpath);
free (fullpath);
return -1;
}
file = fopen (fullpath, "rb");
if (file == NULL)
{
ICECAST_LOG_WARN("Problem accessing file \"%H\"", fullpath);
client_send_error_by_id(httpclient, ICECAST_ERROR_FSERV_FILE_NOT_READABLE);
free (fullpath);
return -1;
}
free (fullpath);
content_length = file_buf.st_size;
range = httpp_getvar (httpclient->parser, "range");
/* full http range handling is currently not done but we deal with the common case */
if (range != NULL) {
ret = 0;
if (strncasecmp (range, "bytes=", 6) == 0)
ret = sscanf (range+6, "%" SCN_OFF_T "-", &rangenumber);
if (ret != 1) {
/* format not correct, so lets just assume
we start from the beginning */
rangeproblem = 1;
}
if (rangenumber < 0) {
rangeproblem = 1;
}
if (!rangeproblem) {
ret = fseeko (file, rangenumber, SEEK_SET);
if (ret != -1) {
new_content_len = content_length - rangenumber;
if (new_content_len < 0) {
rangeproblem = 1;
}
}
else {
rangeproblem = 1;
}
if (!rangeproblem) {
off_t endpos = rangenumber+new_content_len-1;
char *type;
if (endpos < 0) {
endpos = 0;
}
httpclient->respcode = 206;
type = fserve_content_type(httpclient->uri);
bytes = util_http_build_header (httpclient->refbuf->data, BUFSIZE, 0,
0, 206, NULL,
type, NULL,
NULL, NULL, httpclient);
if (bytes == -1 || bytes >= (BUFSIZE - 512)) { /* we want at least 512 bytes left */
ICECAST_LOG_ERROR("Dropping client as we can not build response headers.");
client_send_error_by_id(httpclient, ICECAST_ERROR_GEN_HEADER_GEN_FAILED);
return -1;
}
bytes += snprintf (httpclient->refbuf->data + bytes, BUFSIZE - bytes,
"Accept-Ranges: bytes\r\n"
"Content-Length: %" PRI_OFF_T "\r\n"
"Content-Range: bytes %" PRI_OFF_T \
"-%" PRI_OFF_T "/%" PRI_OFF_T "\r\n\r\n",
new_content_len,
rangenumber,
endpos,
content_length);
free (type);
}
else {
goto fail;
}
}
else {
goto fail;
}
}
else {
char *type = fserve_content_type(httpclient->uri);
httpclient->respcode = 200;
bytes = util_http_build_header (httpclient->refbuf->data, BUFSIZE, 0,
0, 200, NULL,
type, NULL,
NULL, NULL, httpclient);
if (bytes == -1 || bytes >= (BUFSIZE - 512)) { /* we want at least 512 bytes left */
ICECAST_LOG_ERROR("Dropping client as we can not build response headers.");
client_send_error_by_id(httpclient, ICECAST_ERROR_GEN_HEADER_GEN_FAILED);
fclose(file);
return -1;
}
bytes += snprintf (httpclient->refbuf->data + bytes, BUFSIZE - bytes,
"Accept-Ranges: bytes\r\n"
"Content-Length: %" PRI_OFF_T "\r\n\r\n",
content_length);
free (type);
}
httpclient->refbuf->len = bytes;
httpclient->pos = 0;
stats_event_inc (NULL, "file_connections");
fserve_add_client (httpclient, file);
return 0;
fail:
fclose (file);
client_send_error_by_id(httpclient, ICECAST_ERROR_FSERV_REQUEST_RANGE_NOT_SATISFIABLE);
return -1;
}
/* wrapper for starting the provided relay stream */
static void check_relay_stream (relay_server *relay)
{
if (relay->source == NULL)
{
if (relay->localmount[0] != '/')
{
ICECAST_LOG_WARN("relay mountpoint \"%s\" does not start with /, skipping",
relay->localmount);
return;
}
/* new relay, reserve the name */
relay->source = source_reserve (relay->localmount);
if (relay->source)
{
ICECAST_LOG_DEBUG("Adding relay source at mountpoint \"%s\"", relay->localmount);
if (relay->on_demand)
{
ice_config_t *config = config_get_config ();
mount_proxy *mountinfo = config_find_mount (config, relay->localmount, MOUNT_TYPE_NORMAL);
relay->source->on_demand = relay->on_demand;
if (mountinfo == NULL)
source_update_settings (config, relay->source, mountinfo);
config_release_config ();
stats_event (relay->localmount, "listeners", "0");
slave_update_all_mounts();
}
}
else
{
if (relay->start == 0)
{
ICECAST_LOG_WARN("new relay but source \"%s\" already exists", relay->localmount);
relay->start = 1;
}
return;
}
}
do
{
source_t *source = relay->source;
/* skip relay if active, not configured or just not time yet */
if (relay->source == NULL || relay->running || relay->start > time(NULL))
break;
/* check if an inactive on-demand relay has a fallback that has listeners */
if (relay->on_demand && source->on_demand_req == 0)
{
relay->source->on_demand = relay->on_demand;
if (source->fallback_mount && source->fallback_override)
{
source_t *fallback;
avl_tree_rlock (global.source_tree);
fallback = source_find_mount (source->fallback_mount);
if (fallback && fallback->running && fallback->listeners)
{
ICECAST_LOG_DEBUG("fallback running %d with %lu listeners", fallback->running, fallback->listeners);
source->on_demand_req = 1;
}
avl_tree_unlock (global.source_tree);
}
if (source->on_demand_req == 0)
break;
}
relay->start = time(NULL) + 5;
relay->running = 1;
relay->thread = thread_create ("Relay Thread", start_relay_stream,
relay, THREAD_ATTACHED);
return;
} while (0);
/* the relay thread may of shut down itself */
if (relay->cleanup)
{
if (relay->thread)
{
ICECAST_LOG_DEBUG("waiting for relay thread for \"%s\"", relay->localmount);
thread_join (relay->thread);
relay->thread = NULL;
}
relay->cleanup = 0;
relay->running = 0;
if (relay->on_demand && relay->source)
{
ice_config_t *config = config_get_config ();
mount_proxy *mountinfo = config_find_mount (config, relay->localmount, MOUNT_TYPE_NORMAL);
source_update_settings (config, relay->source, mountinfo);
config_release_config ();
stats_event (relay->localmount, "listeners", "0");
}
}
}
/* Actually open the connection and do some http parsing, handle any 302
* responses within here.
*/
static client_t *open_relay_connection (relay_server *relay)
{
int redirects = 0;
char *server_id = NULL;
ice_config_t *config;
http_parser_t *parser = NULL;
connection_t *con=NULL;
char *server = strdup (relay->server);
char *mount = strdup (relay->mount);
int port = relay->port;
char *auth_header;
char header[4096];
config = config_get_config ();
server_id = strdup (config->server_id);
config_release_config ();
/* build any authentication header before connecting */
if (relay->username && relay->password)
{
char *esc_authorisation;
unsigned len = strlen(relay->username) + strlen(relay->password) + 2;
auth_header = malloc (len);
snprintf (auth_header, len, "%s:%s", relay->username, relay->password);
esc_authorisation = util_base64_encode(auth_header, len);
free(auth_header);
len = strlen (esc_authorisation) + 24;
auth_header = malloc (len);
snprintf (auth_header, len,
"Authorization: Basic %s\r\n", esc_authorisation);
free(esc_authorisation);
}
else
auth_header = strdup ("");
while (redirects < 10)
{
sock_t streamsock;
ICECAST_LOG_INFO("connecting to %s:%d", server, port);
streamsock = sock_connect_wto_bind (server, port, relay->bind, 10);
if (streamsock == SOCK_ERROR)
{
ICECAST_LOG_WARN("Failed to connect to %s:%d", server, port);
break;
}
con = connection_create (streamsock, -1, strdup (server));
/* At this point we may not know if we are relaying an mp3 or vorbis
* stream, but only send the icy-metadata header if the relay details
* state so (the typical case). It's harmless in the vorbis case. If
* we don't send in this header then relay will not have mp3 metadata.
*/
sock_write(streamsock, "GET %s HTTP/1.0\r\n"
"User-Agent: %s\r\n"
"Host: %s\r\n"
"%s"
"%s"
"\r\n",
mount,
server_id,
server,
relay->mp3metadata?"Icy-MetaData: 1\r\n":"",
auth_header);
memset (header, 0, sizeof(header));
if (util_read_header (con->sock, header, 4096, READ_ENTIRE_HEADER) == 0)
{
ICECAST_LOG_ERROR("Header read failed for %s (%s:%d%s)", relay->localmount, server, port, mount);
break;
}
parser = httpp_create_parser();
httpp_initialize (parser, NULL);
if (! httpp_parse_response (parser, header, strlen(header), relay->localmount))
{
ICECAST_LOG_ERROR("Error parsing relay request for %s (%s:%d%s)", relay->localmount,
server, port, mount);
break;
}
if (strcmp (httpp_getvar (parser, HTTPP_VAR_ERROR_CODE), "302") == 0)
{
/* better retry the connection again but with different details */
const char *uri, *mountpoint;
int len;
uri = httpp_getvar (parser, "location");
ICECAST_LOG_INFO("redirect received %s", uri);
if (strncmp (uri, "http://", 7) != 0)
break;
uri += 7;
mountpoint = strchr (uri, '/');
free (mount);
if (mountpoint)
mount = strdup (mountpoint);
else
mount = strdup ("/");
len = strcspn (uri, ":/");
port = 80;
if (uri [len] == ':')
port = atoi (uri+len+1);
free (server);
server = calloc (1, len+1);
strncpy (server, uri, len);
connection_close (con);
httpp_destroy (parser);
con = NULL;
parser = NULL;
}
else
{
client_t *client = NULL;
if (httpp_getvar (parser, HTTPP_VAR_ERROR_MESSAGE))
{
ICECAST_LOG_ERROR("Error from relay request: %s (%s)", relay->localmount,
httpp_getvar(parser, HTTPP_VAR_ERROR_MESSAGE));
break;
}
global_lock ();
if (client_create (&client, con, parser) < 0)
{
global_unlock ();
/* make sure only the client_destory frees these */
con = NULL;
parser = NULL;
client_destroy (client);
break;
}
global_unlock ();
sock_set_blocking (streamsock, 0);
client_set_queue (client, NULL);
free (server);
free (mount);
free (server_id);
free (auth_header);
return client;
}
redirects++;
}
/* failed, better clean up */
free (server);
free (mount);
free (server_id);
free (auth_header);
if (con)
connection_close (con);
if (parser)
httpp_destroy (parser);
return NULL;
}
void fserve_recheck_mime_types(ice_config_t *config)
{
FILE *mimefile;
char line[4096];
char *type, *ext, *cur;
mime_type *mapping;
avl_tree *new_mimetypes;
if (config->mimetypes_fn == NULL)
return;
mimefile = fopen (config->mimetypes_fn, "r");
if (mimefile == NULL)
{
ICECAST_LOG_WARN("Cannot open mime types file %s", config->mimetypes_fn);
return;
}
new_mimetypes = avl_tree_new(_compare_mappings, NULL);
while(fgets(line, 4096, mimefile))
{
line[4095] = 0;
if(*line == 0 || *line == '#')
continue;
type = line;
cur = line;
while(*cur != ' ' && *cur != '\t' && *cur)
cur++;
if(*cur == 0)
continue;
*cur++ = 0;
while(1) {
while(*cur == ' ' || *cur == '\t')
cur++;
if(*cur == 0)
break;
ext = cur;
while(*cur != ' ' && *cur != '\t' && *cur != '\n' && *cur)
cur++;
*cur++ = 0;
if(*ext)
{
void *tmp;
/* Add a new extension->type mapping */
mapping = malloc(sizeof(mime_type));
mapping->ext = strdup(ext);
mapping->type = strdup(type);
if (!avl_get_by_key (new_mimetypes, mapping, &tmp))
avl_delete (new_mimetypes, mapping, _delete_mapping);
avl_insert (new_mimetypes, mapping);
}
}
}
fclose(mimefile);
thread_spin_lock (&pending_lock);
if (mimetypes)
avl_tree_free (mimetypes, _delete_mapping);
mimetypes = new_mimetypes;
thread_spin_unlock (&pending_lock);
}
/* called from the source thread when the metadata has been updated.
* The artist title are checked and made ready for clients to send
*/
static void mp3_set_title (source_t *source)
{
const char streamtitle[] = "StreamTitle='";
const char streamurl[] = "StreamUrl='";
size_t size;
unsigned char len_byte;
refbuf_t *p;
unsigned int len = sizeof(streamtitle) + 2; /* the StreamTitle, quotes, ; and null */
mp3_state *source_mp3 = source->format->_state;
/* make sure the url data does not disappear from under us */
thread_mutex_lock (&source_mp3->url_lock);
/* work out message length */
if (source_mp3->url_artist)
len += strlen (source_mp3->url_artist);
if (source_mp3->url_title)
len += strlen (source_mp3->url_title);
if (source_mp3->url_artist && source_mp3->url_title)
len += 3;
if (source_mp3->inline_url)
{
char *end = strstr (source_mp3->inline_url, "';");
if (end)
len += end - source_mp3->inline_url+2;
}
else if (source_mp3->url)
len += strlen (source_mp3->url) + strlen (streamurl) + 2;
#define MAX_META_LEN 255*16
if (len > MAX_META_LEN)
{
thread_mutex_unlock (&source_mp3->url_lock);
ICECAST_LOG_WARN("Metadata too long at %d chars", len);
return;
}
/* work out the metadata len byte */
len_byte = (len-1) / 16 + 1;
/* now we know how much space to allocate, +1 for the len byte */
size = len_byte * 16 + 1;
p = refbuf_new (size);
if (p)
{
mp3_state *source_mp3 = source->format->_state;
int r;
memset (p->data, '\0', size);
if (source_mp3->url_artist && source_mp3->url_title)
r = snprintf (p->data, size, "%c%s%s - %s';", len_byte, streamtitle,
source_mp3->url_artist, source_mp3->url_title);
else
r = snprintf (p->data, size, "%c%s%s';", len_byte, streamtitle,
source_mp3->url_title);
if (r > 0)
{
if (source_mp3->inline_url)
{
char *end = strstr (source_mp3->inline_url, "';");
ssize_t urllen = size;
if (end) urllen = end - source_mp3->inline_url + 2;
if ((ssize_t)(size-r) > urllen)
snprintf (p->data+r, size-r, "StreamUrl='%s';", source_mp3->inline_url+11);
}
else if (source_mp3->url)
snprintf (p->data+r, size-r, "StreamUrl='%s';", source_mp3->url);
}
ICECAST_LOG_DEBUG("shoutcast metadata block setup with %s", p->data+1);
filter_shoutcast_metadata (source, p->data, size);
refbuf_release (source_mp3->metadata);
source_mp3->metadata = p;
}
thread_mutex_unlock (&source_mp3->url_lock);
}
