Merge branch 'develop' of github.com:matrix-org/synapse into events_refactor

1 files changed, 408 insertions, 0 deletions

diff --git a/contrib/jitsimeetbridge/unjingle/strophe.jingle.sdp.util.js b/contrib/jitsimeetbridge/unjingle/strophe.jingle.sdp.util.js
new file mode 100644
index 0000000000..042a123c32
--- /dev/null
+++ b/contrib/jitsimeetbridge/unjingle/strophe.jingle.sdp.util.js
@@ -0,0 +1,408 @@
+/**
+ * Contains utility classes used in SDP class.
+ *
+ */
+
+/**
+ * Class holds a=ssrc lines and media type a=mid
+ * @param ssrc synchronization source identifier number(a=ssrc lines from SDP)
+ * @param type media type eg. "audio" or "video"(a=mid frm SDP)
+ * @constructor
+ */
+function ChannelSsrc(ssrc, type) {
+    this.ssrc = ssrc;
+    this.type = type;
+    this.lines = [];
+}
+
+/**
+ * Class holds a=ssrc-group: lines
+ * @param semantics
+ * @param ssrcs
+ * @constructor
+ */
+function ChannelSsrcGroup(semantics, ssrcs, line) {
+    this.semantics = semantics;
+    this.ssrcs = ssrcs;
+}
+
+/**
+ * Helper class represents media channel. Is a container for ChannelSsrc, holds channel idx and media type.
+ * @param channelNumber channel idx in SDP media array.
+ * @param mediaType media type(a=mid)
+ * @constructor
+ */
+function MediaChannel(channelNumber, mediaType) {
+    /**
+     * SDP channel number
+     * @type {*}
+     */
+    this.chNumber = channelNumber;
+    /**
+     * Channel media type(a=mid)
+     * @type {*}
+     */
+    this.mediaType = mediaType;
+    /**
+     * The maps of ssrc numbers to ChannelSsrc objects.
+     */
+    this.ssrcs = {};
+
+    /**
+     * The array of ChannelSsrcGroup objects.
+     * @type {Array}
+     */
+    this.ssrcGroups = [];
+}
+
+SDPUtil = {
+    iceparams: function (mediadesc, sessiondesc) {
+        var data = null;
+        if (SDPUtil.find_line(mediadesc, 'a=ice-ufrag:', sessiondesc) &&
+            SDPUtil.find_line(mediadesc, 'a=ice-pwd:', sessiondesc)) {
+            data = {
+                ufrag: SDPUtil.parse_iceufrag(SDPUtil.find_line(mediadesc, 'a=ice-ufrag:', sessiondesc)),
+                pwd: SDPUtil.parse_icepwd(SDPUtil.find_line(mediadesc, 'a=ice-pwd:', sessiondesc))
+            };
+        }
+        return data;
+    },
+    parse_iceufrag: function (line) {
+        return line.substring(12);
+    },
+    build_iceufrag: function (frag) {
+        return 'a=ice-ufrag:' + frag;
+    },
+    parse_icepwd: function (line) {
+        return line.substring(10);
+    },
+    build_icepwd: function (pwd) {
+        return 'a=ice-pwd:' + pwd;
+    },
+    parse_mid: function (line) {
+        return line.substring(6);
+    },
+    parse_mline: function (line) {
+        var parts = line.substring(2).split(' '),
+            data = {};
+        data.media = parts.shift();
+        data.port = parts.shift();
+        data.proto = parts.shift();
+        if (parts[parts.length - 1] === '') { // trailing whitespace
+            parts.pop();
+        }
+        data.fmt = parts;
+        return data;
+    },
+    build_mline: function (mline) {
+        return 'm=' + mline.media + ' ' + mline.port + ' ' + mline.proto + ' ' + mline.fmt.join(' ');
+    },
+    parse_rtpmap: function (line) {
+        var parts = line.substring(9).split(' '),
+            data = {};
+        data.id = parts.shift();
+        parts = parts[0].split('/');
+        data.name = parts.shift();
+        data.clockrate = parts.shift();
+        data.channels = parts.length ? parts.shift() : '1';
+        return data;
+    },
+    /**
+     * Parses SDP line "a=sctpmap:..." and extracts SCTP port from it.
+     * @param line eg. "a=sctpmap:5000 webrtc-datachannel"
+     * @returns [SCTP port number, protocol, streams]
+     */
+    parse_sctpmap: function (line)
+    {
+        var parts = line.substring(10).split(' ');
+        var sctpPort = parts[0];
+        var protocol = parts[1];
+        // Stream count is optional
+        var streamCount = parts.length > 2 ? parts[2] : null;
+        return [sctpPort, protocol, streamCount];// SCTP port
+    },
+    build_rtpmap: function (el) {
+        var line = 'a=rtpmap:' + el.getAttribute('id') + ' ' + el.getAttribute('name') + '/' + el.getAttribute('clockrate');
+        if (el.getAttribute('channels') && el.getAttribute('channels') != '1') {
+            line += '/' + el.getAttribute('channels');
+        }
+        return line;
+    },
+    parse_crypto: function (line) {
+        var parts = line.substring(9).split(' '),
+            data = {};
+        data.tag = parts.shift();
+        data['crypto-suite'] = parts.shift();
+        data['key-params'] = parts.shift();
+        if (parts.length) {
+            data['session-params'] = parts.join(' ');
+        }
+        return data;
+    },
+    parse_fingerprint: function (line) { // RFC 4572
+        var parts = line.substring(14).split(' '),
+            data = {};
+        data.hash = parts.shift();
+        data.fingerprint = parts.shift();
+        // TODO assert that fingerprint satisfies 2UHEX *(":" 2UHEX) ?
+        return data;
+    },
+    parse_fmtp: function (line) {
+        var parts = line.split(' '),
+            i, key, value,
+            data = [];
+        parts.shift();
+        parts = parts.join(' ').split(';');
+        for (i = 0; i < parts.length; i++) {
+            key = parts[i].split('=')[0];
+            while (key.length && key[0] == ' ') {
+                key = key.substring(1);
+            }
+            value = parts[i].split('=')[1];
+            if (key && value) {
+                data.push({name: key, value: value});
+            } else if (key) {
+                // rfc 4733 (DTMF) style stuff
+                data.push({name: '', value: key});
+            }
+        }
+        return data;
+    },
+    parse_icecandidate: function (line) {
+        var candidate = {},
+            elems = line.split(' ');
+        candidate.foundation = elems[0].substring(12);
+        candidate.component = elems[1];
+        candidate.protocol = elems[2].toLowerCase();
+        candidate.priority = elems[3];
+        candidate.ip = elems[4];
+        candidate.port = elems[5];
+        // elems[6] => "typ"
+        candidate.type = elems[7];
+        candidate.generation = 0; // default value, may be overwritten below
+        for (var i = 8; i < elems.length; i += 2) {
+            switch (elems[i]) {
+                case 'raddr':
+                    candidate['rel-addr'] = elems[i + 1];
+                    break;
+                case 'rport':
+                    candidate['rel-port'] = elems[i + 1];
+                    break;
+                case 'generation':
+                    candidate.generation = elems[i + 1];
+                    break;
+                case 'tcptype':
+                    candidate.tcptype = elems[i + 1];
+                    break;
+                default: // TODO
+                    console.log('parse_icecandidate not translating "' + elems[i] + '" = "' + elems[i + 1] + '"');
+            }
+        }
+        candidate.network = '1';
+        candidate.id = Math.random().toString(36).substr(2, 10); // not applicable to SDP -- FIXME: should be unique, not just random
+        return candidate;
+    },
+    build_icecandidate: function (cand) {
+        var line = ['a=candidate:' + cand.foundation, cand.component, cand.protocol, cand.priority, cand.ip, cand.port, 'typ', cand.type].join(' ');
+        line += ' ';
+        switch (cand.type) {
+            case 'srflx':
+            case 'prflx':
+            case 'relay':
+                if (cand.hasOwnAttribute('rel-addr') && cand.hasOwnAttribute('rel-port')) {
+                    line += 'raddr';
+                    line += ' ';
+                    line += cand['rel-addr'];
+                    line += ' ';
+                    line += 'rport';
+                    line += ' ';
+                    line += cand['rel-port'];
+                    line += ' ';
+                }
+                break;
+        }
+        if (cand.hasOwnAttribute('tcptype')) {
+            line += 'tcptype';
+            line += ' ';
+            line += cand.tcptype;
+            line += ' ';
+        }
+        line += 'generation';
+        line += ' ';
+        line += cand.hasOwnAttribute('generation') ? cand.generation : '0';
+        return line;
+    },
+    parse_ssrc: function (desc) {
+        // proprietary mapping of a=ssrc lines
+        // TODO: see "Jingle RTP Source Description" by Juberti and P. Thatcher on google docs
+        // and parse according to that
+        var lines = desc.split('\r\n'),
+            data = {};
+        for (var i = 0; i < lines.length; i++) {
+            if (lines[i].substring(0, 7) == 'a=ssrc:') {
+                var idx = lines[i].indexOf(' ');
+                data[lines[i].substr(idx + 1).split(':', 2)[0]] = lines[i].substr(idx + 1).split(':', 2)[1];
+            }
+        }
+        return data;
+    },
+    parse_rtcpfb: function (line) {
+        var parts = line.substr(10).split(' ');
+        var data = {};
+        data.pt = parts.shift();
+        data.type = parts.shift();
+        data.params = parts;
+        return data;
+    },
+    parse_extmap: function (line) {
+        var parts = line.substr(9).split(' ');
+        var data = {};
+        data.value = parts.shift();
+        if (data.value.indexOf('/') != -1) {
+            data.direction = data.value.substr(data.value.indexOf('/') + 1);
+            data.value = data.value.substr(0, data.value.indexOf('/'));
+        } else {
+            data.direction = 'both';
+        }
+        data.uri = parts.shift();
+        data.params = parts;
+        return data;
+    },
+    find_line: function (haystack, needle, sessionpart) {
+        var lines = haystack.split('\r\n');
+        for (var i = 0; i < lines.length; i++) {
+            if (lines[i].substring(0, needle.length) == needle) {
+                return lines[i];
+            }
+        }
+        if (!sessionpart) {
+            return false;
+        }
+        // search session part
+        lines = sessionpart.split('\r\n');
+        for (var j = 0; j < lines.length; j++) {
+            if (lines[j].substring(0, needle.length) == needle) {
+                return lines[j];
+            }
+        }
+        return false;
+    },
+    find_lines: function (haystack, needle, sessionpart) {
+        var lines = haystack.split('\r\n'),
+            needles = [];
+        for (var i = 0; i < lines.length; i++) {
+            if (lines[i].substring(0, needle.length) == needle)
+                needles.push(lines[i]);
+        }
+        if (needles.length || !sessionpart) {
+            return needles;
+        }
+        // search session part
+        lines = sessionpart.split('\r\n');
+        for (var j = 0; j < lines.length; j++) {
+            if (lines[j].substring(0, needle.length) == needle) {
+                needles.push(lines[j]);
+            }
+        }
+        return needles;
+    },
+    candidateToJingle: function (line) {
+        // a=candidate:2979166662 1 udp 2113937151 192.168.2.100 57698 typ host generation 0
+        //      <candidate component=... foundation=... generation=... id=... ip=... network=... port=... priority=... protocol=... type=.../>
+        if (line.indexOf('candidate:') === 0) {
+            line = 'a=' + line;
+        } else if (line.substring(0, 12) != 'a=candidate:') {
+            console.log('parseCandidate called with a line that is not a candidate line');
+            console.log(line);
+            return null;
+        }
+        if (line.substring(line.length - 2) == '\r\n') // chomp it
+            line = line.substring(0, line.length - 2);
+        var candidate = {},
+            elems = line.split(' '),
+            i;
+        if (elems[6] != 'typ') {
+            console.log('did not find typ in the right place');
+            console.log(line);
+            return null;
+        }
+        candidate.foundation = elems[0].substring(12);
+        candidate.component = elems[1];
+        candidate.protocol = elems[2].toLowerCase();
+        candidate.priority = elems[3];
+        candidate.ip = elems[4];
+        candidate.port = elems[5];
+        // elems[6] => "typ"
+        candidate.type = elems[7];
+
+        candidate.generation = '0'; // default, may be overwritten below
+        for (i = 8; i < elems.length; i += 2) {
+            switch (elems[i]) {
+                case 'raddr':
+                    candidate['rel-addr'] = elems[i + 1];
+                    break;
+                case 'rport':
+                    candidate['rel-port'] = elems[i + 1];
+                    break;
+                case 'generation':
+                    candidate.generation = elems[i + 1];
+                    break;
+                case 'tcptype':
+                    candidate.tcptype = elems[i + 1];
+                    break;
+                default: // TODO
+                    console.log('not translating "' + elems[i] + '" = "' + elems[i + 1] + '"');
+            }
+        }
+        candidate.network = '1';
+        candidate.id = Math.random().toString(36).substr(2, 10); // not applicable to SDP -- FIXME: should be unique, not just random
+        return candidate;
+    },
+    candidateFromJingle: function (cand) {
+        var line = 'a=candidate:';
+        line += cand.getAttribute('foundation');
+        line += ' ';
+        line += cand.getAttribute('component');
+        line += ' ';
+        line += cand.getAttribute('protocol'); //.toUpperCase(); // chrome M23 doesn't like this
+        line += ' ';
+        line += cand.getAttribute('priority');
+        line += ' ';
+        line += cand.getAttribute('ip');
+        line += ' ';
+        line += cand.getAttribute('port');
+        line += ' ';
+        line += 'typ';
+        line += ' ' + cand.getAttribute('type');
+        line += ' ';
+        switch (cand.getAttribute('type')) {
+            case 'srflx':
+            case 'prflx':
+            case 'relay':
+                if (cand.getAttribute('rel-addr') && cand.getAttribute('rel-port')) {
+                    line += 'raddr';
+                    line += ' ';
+                    line += cand.getAttribute('rel-addr');
+                    line += ' ';
+                    line += 'rport';
+                    line += ' ';
+                    line += cand.getAttribute('rel-port');
+                    line += ' ';
+                }
+                break;
+        }
+        if (cand.getAttribute('protocol').toLowerCase() == 'tcp') {
+            line += 'tcptype';
+            line += ' ';
+            line += cand.getAttribute('tcptype');
+            line += ' ';
+        }
+        line += 'generation';
+        line += ' ';
+        line += cand.getAttribute('generation') || '0';
+        return line + '\r\n';
+    }
+};
+
+exports.SDPUtil = SDPUtil;
+