mirror of
https://github.com/YunoHost-Apps/movim_ynh.git
synced 2024-09-03 19:46:19 +02:00
323 lines
17 KiB
PHP
323 lines
17 KiB
PHP
<?php
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class SDPtoJingle {
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private $sdp;
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private $arr;
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private $jingle;
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private $content = null;
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private $transport = null;
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private $action;
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// Move the global fingerprint into each medias
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private $global_fingerprint = array();
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private $regex = array(
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'candidate' => "/^a=candidate:(\w{1,32}) (\d{1,5}) (udp|tcp) (\d{1,10}) ([a-zA-Z0-9:\.]{1,45}) (\d{1,5}) (typ) (host|srflx|prflx|relay)( (raddr) ([a-zA-Z0-9:\.]{1,45}) (rport) (\d{1,5}))?( (generation) (\d) (network) (\d) (id) ([a-zA-Z0-9]{1,45}))?/i", //à partir de generation les attr sont spécifiques à XMPP..autant l'enlever de la REGEX et les traiter à part? En théorie ils peuvent être dans n'importe quel ordre.
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'sess_id' => "/^o=(\S+) (\d+)/i",
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'group' => "/^a=group:(\S+) (.+)/i",
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'rtpmap' => "/^a=rtpmap:(\d+) (([^\s\/]+)(\/(\d+)(\/([^\s\/]+))?)?)?/i",
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'fmtp' => "/^a=fmtp:(\d+) (.+)/i",
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'rtcp_fb' => "/^a=rtcp-fb:(\S+) (\S+)( (\S+))?/i",
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'rtcp_fb_trr_int' => "/^a=rtcp-fb:(\d+) trr-int (\d+)/i",
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'pwd' => "/^a=ice-pwd:(\S+)/i",
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'ufrag' => "/^a=ice-ufrag:(\S+)/i",
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'ptime' => "/^a=ptime:(\d+)/i",
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'maxptime' => "/^a=maxptime:(\d+)/i",
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'ssrc' => "/^a=ssrc:(\d+) (\w+)(:(\S+))?( (\w+))?/i",
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'rtcp_mux' => "/^a=rtcp-mux/i",
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'crypto' => "/^a=crypto:(\d{1,9}) (\w+) (\S+)( (\S+))?/i",
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'zrtp_hash' => "/^a=zrtp-hash:(\S+) (\w+)/i",
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'fingerprint' => "/^a=fingerprint:(\S+) (\S+)/i",
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'setup' => "/^a=setup:(\S+)/i",
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'extmap' => "/^a=extmap:([^\s\/]+)(\/([^\s\/]+))? (\S+)/i",
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'sctpmap' => "/^a=sctpmap:(\d+) (\S+) (\d+)/i",
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'bandwidth' => "/^b=(\w+):(\d+)/i",
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'media' => "/^m=(audio|video|application|data)/i"
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);
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function __construct($sdp, $initiator, $responder, $action) {
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$this->sdp = $sdp;
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$this->arr = explode("\n", $this->sdp);
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$this->jingle = new SimpleXMLElement('<jingle></jingle>');
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$this->jingle->addAttribute('xmlns', 'urn:xmpp:jingle:1');
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$this->jingle->addAttribute('action',$action);
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$this->jingle->addAttribute('initiator',$initiator);
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$this->jingle->addAttribute('responder',$responder);
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$this->action = $action;
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}
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function getSessionId(){
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$s = Session::start();
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if($sid = $s->get('jingleSid')){
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return $sid;
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}
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else{
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$o = $this->arr[1];
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$sid = explode(" ", $o);
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return substr(base_convert($sid[1], 30, 10), 0, 6);
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}
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}
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function generate() {
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foreach($this->arr as $l) {
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foreach($this->regex as $key => $r) {
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if(preg_match($r, $l, $matches)) {
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switch($key) {
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case 'sess_id':
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$this->jingle->addAttribute('sid', $this->getSessionId());
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break;
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case 'media':
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$this->content = $this->jingle->addChild('content');
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$this->transport = $this->content->addChild('transport');
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$this->transport->addAttribute('xmlns', "urn:xmpp:jingle:transports:ice-udp:1");
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$this->content->addAttribute('creator', 'initiator'); // TODO à fixer !
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$this->content->addAttribute('name', $matches[1]);
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// The description node
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if($this->action != 'transport-info') {
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$description = $this->content->addChild('description');
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$description->addAttribute('xmlns', "urn:xmpp:jingle:apps:rtp:1");
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$description->addAttribute('media', $matches[1]);
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}
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if(!empty($this->global_fingerprint)) {
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$fingerprint = $this->transport->addChild('fingerprint', $this->global_fingerprint['fingerprint']);
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$this->transport->addAttribute('pwd', $this->global_fingerprint['pwd']);
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$this->transport->addAttribute('ufrag', $this->global_fingerprint['ufrag']);
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$fingerprint->addAttribute('xmlns', "urn:xmpp:jingle:apps:dtls:0");
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$fingerprint->addAttribute('hash', $this->global_fingerprint['hash']);
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}
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break;
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case 'bandwidth':
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$bandwidth = $description->addChild('bandwidth');
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$bandwidth->addAttribute('type', $matches[1]);
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$bandwidth->addAttribute('value', $matches[2]);
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break;
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case 'rtpmap':
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$payloadtype = $description->addChild('payload-type');
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$payloadtype->addAttribute('id', $matches[1]);
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$payloadtype->addAttribute('name', $matches[3]);
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if(isset($matches[4]))
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$payloadtype->addAttribute('clockrate', $matches[5]);
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if(isset($matches[7]))
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$payloadtype->addAttribute('channels', $matches[7]);
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break;
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// http://xmpp.org/extensions/xep-0167.html#format
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case 'fmtp':
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// This work only if fmtp is added just after
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// the correspondant rtpmap
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if($matches[1] == $payloadtype->attributes()->id) {
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$params = explode(';', $matches[2]);
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foreach($params as $value) {
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$p = explode('=', trim($value));
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$parameter = $payloadtype->addChild('parameter');
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if(count($p) == 1) {
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$parameter->addAttribute('value', $p[0]);
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} else {
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$parameter->addAttribute('name', $p[0]);
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$parameter->addAttribute('value', $p[1]);
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}
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}
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}
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break;
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case 'rtcp_fb':
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if($matches[1] == '*') {
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$rtcpfp = $description->addChild('rtcp-fb');
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} else {
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$rtcpfp = $payloadtype->addChild('rtcp-fb');
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}
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$rtcpfp->addAttribute('xmlns', "urn:xmpp:jingle:apps:rtp:rtcp-fb:0");
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$rtcpfp->addAttribute('id', $matches[1]);
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$rtcpfp->addAttribute('type', $matches[2]);
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if(isset($matches[4]))
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$rtcpfp->addAttribute('subtype', $matches[4]);
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break;
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case 'rtcp_fb_trr_int':
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$rtcpfp = $payloadtype->addChild('rtcp-fb-trr-int');
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$rtcpfp->addAttribute('xmlns', "urn:xmpp:jingle:apps:rtp:rtcp-fb:0");
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$rtcpfp->addAttribute('id', $matches[1]);
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$rtcpfp->addAttribute('value', $matches[2]);
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break;
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// http://xmpp.org/extensions/xep-0167.html#srtp
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case 'crypto':
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$encryption = $description->addChild('encryption');
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$crypto = $encryption->addChild('crypto');
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$crypto->addAttribute('crypto-suite', $matches[2]);
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$crypto->addAttribute('key-params', $matches[3]);
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$crypto->addAttribute('tag', $matches[1]);
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if(isset($matches[5]))
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$crypto->addAttribute('session-params', $matches[5]);
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break;
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// http://xmpp.org/extensions/xep-0262.html
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case 'zrtp_hash':
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$zrtphash = $encryption->addChild('zrtp-hash', $matches[2]);
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$zrtphash->addAttribute('xmlns', "urn:xmpp:jingle:apps:rtp:zrtp:1");
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$zrtphash->addAttribute('version', $matches[1]);
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break;
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case 'rtcp_mux':
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$description->addChild('rtcp-mux');
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break;
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// http://xmpp.org/extensions/xep-0294.html
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case 'extmap':
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$rtphdrext = $description->addChild('rtp-hdrext');
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$rtphdrext->addAttribute('xmlns', "urn:xmpp:jingle:apps:rtp:rtp-hdrext:0");
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$rtphdrext->addAttribute('id', $matches[1]);
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$rtphdrext->addAttribute('uri', $matches[4]);
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if(isset($matches[3]) && $matches[3] != '')
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$rtphdrext->addAttribute('senders', $matches[3]);
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break;
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// http://xmpp.org/extensions/inbox/jingle-source.html
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case 'ssrc':
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if(!$description->source) {
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$ssrc = $description->addChild('source');
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$ssrc->addAttribute('xmlns', "urn:xmpp:jingle:apps:rtp:ssma:0");
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$ssrc->addAttribute('id', $matches[1]);
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}
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$param = $ssrc->addChild('parameter');
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$param->addAttribute('name', $matches[2]);
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$param->addAttribute('value', $matches[4]);
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break;
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case 'ptime':
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$description->addAttribute('ptime', $matches[1]);
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break;
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case 'maxptime':
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$description->addAttribute('maxptime', $matches[1]);
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break;
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// http://xmpp.org/extensions/xep-0338.html
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case 'group':
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$group = $this->jingle->addChild('group');
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$group->addAttribute('xmlns', "urn:xmpp:jingle:apps:grouping:0");
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$group->addAttribute('semantics', $matches[1]);
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$params = explode(' ', $matches[2]);
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foreach($params as $value) {
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$content = $group->addChild('content');
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$content->addAttribute('name', trim($value));
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}
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break;
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// http://xmpp.org/extensions/xep-0320.html
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case 'fingerprint':
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if($this->content == null) {
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$this->global_fingerprint['fingerprint'] = $matches[2];
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$this->global_fingerprint['hash'] = $matches[1];
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} else {
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$fingerprint = $this->transport->addChild('fingerprint', $matches[2]);
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$fingerprint->addAttribute('xmlns', "urn:xmpp:jingle:apps:dtls:0");
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$fingerprint->addAttribute('hash', $matches[1]);
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}
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break;
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// http://xmpp.org/extensions/inbox/jingle-dtls.html
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case 'sctpmap':
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$sctpmap = $this->transport->addChild('sctpmap');
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$sctpmap->addAttribute('xmlns', "urn:xmpp:jingle:transports:dtls-sctp:1");
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$sctpmap->addAttribute('number', $matches[1]);
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$sctpmap->addAttribute('protocol', $matches[2]);
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$sctpmap->addAttribute('streams', $matches[3]);
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break;
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case 'setup':
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if($this->content != null) {
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$fingerprint->addAttribute('setup', $matches[1]);
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}
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break;
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case 'pwd':
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if($this->content == null) {
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$this->global_fingerprint['pwd'] = $matches[1];
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} else {
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$this->transport->addAttribute('pwd', $matches[1]);
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}
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break;
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case 'ufrag':
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if($this->content == null) {
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$this->global_fingerprint['ufrag'] = $matches[1];
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} else {
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$this->transport->addAttribute('ufrag', $matches[1]);
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}
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break;
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case 'candidate':
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$generation = "0";
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$network = "0";
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$id = generateKey(10);
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if($key = array_search("generation", $matches))
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$generation = $matches[($key+1)];
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if($key = array_search("network", $matches))
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$network = $matches[($key+1)];
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if($key = array_search("id", $matches))
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$id = $matches[($key+1)];
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if(isset($matches[11]) && isset($matches[13])) {
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$reladdr = $matches[11];
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$relport = $matches[13];
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} else {
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$reladdr = $relport = null;
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}
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$candidate = $this->transport->addChild('candidate');
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$candidate->addAttribute('component' , $matches[2]);
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$candidate->addAttribute('foundation', $matches[1]);
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$candidate->addAttribute('generation', $generation);
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$candidate->addAttribute('id' , $id);
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$candidate->addAttribute('ip' , $matches[5]);
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$candidate->addAttribute('network' , $network);
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$candidate->addAttribute('port' , $matches[6]);
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$candidate->addAttribute('priority' , $matches[4]);
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$candidate->addAttribute('protocol' , $matches[3]);
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$candidate->addAttribute('type' , $matches[8]);
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if($reladdr) {
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$candidate->addAttribute('rel-addr' , $reladdr);
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$candidate->addAttribute('rel-port' , $relport);
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}
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break;
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}
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}
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}
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}
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// We reindent properly the Jingle package
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$xml = $this->jingle->asXML();
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$doc = new \DOMDocument();
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$doc->loadXML($xml);
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$doc->formatOutput = true;
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return substr($doc->saveXML() , strpos($doc->saveXML(), "\n")+1 );
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}
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}
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