@vlad8096/stanza
Version:
Modern XMPP in the browser, with a JSON API
1,121 lines (1,112 loc) • 529 kB
JavaScript
import { __awaiter } from 'tslib';
import { priorityQueue } from 'async';
import { EventEmitter } from 'events';
import Punycode from 'punycode';
import { Transform, Duplex } from 'readable-stream';
import { getMediaSections, getDescription, matchPrefix, getKind, isRejected, parseMLine, getDirection, getMid, getIceParameters, getDtlsParameters, parseRtpParameters, parseRtpEncodingParameters, parseRtcpParameters, parseMsid, parseSctpDescription, parseCandidate, writeSessionBoilerplate, writeSctpDescription, writeRtpDescription, writeRtcpParameters, writeIceParameters, writeDtlsParameters, writeCandidate } from 'sdp';
const MAX_SEQ = Math.pow(2, 32);
const mod = (v, n) => ((v % n) + n) % n;
class StreamManagement extends EventEmitter {
constructor() {
super();
this.allowResume = true;
this.lastAck = 0;
this.handled = 0;
this.unacked = [];
this.inboundStarted = false;
this.outboundStarted = false;
this.id = undefined;
this.jid = undefined;
this.allowResume = true;
this.started = false;
this.cacheHandler = () => undefined;
this._reset();
}
get started() {
return this.outboundStarted && this.inboundStarted;
}
set started(value) {
if (!value) {
this.outboundStarted = false;
this.inboundStarted = false;
}
}
get resumable() {
return this.started && this.allowResume;
}
load(opts) {
var _a;
this.id = opts.id;
this.allowResume = (_a = opts.allowResume) !== null && _a !== void 0 ? _a : true;
this.handled = opts.handled;
this.lastAck = opts.lastAck;
this.unacked = opts.unacked;
this.emit('prebound', opts.jid);
}
cache(handler) {
this.cacheHandler = handler;
}
bind(jid) {
return __awaiter(this, void 0, void 0, function* () {
this.jid = jid;
yield this._cache();
});
}
enable() {
return __awaiter(this, void 0, void 0, function* () {
this.emit('send', {
allowResumption: this.allowResume,
type: 'enable'
});
});
}
resume() {
return __awaiter(this, void 0, void 0, function* () {
this.emit('send', {
handled: this.handled,
previousSession: this.id,
type: 'resume'
});
});
}
enabled(resp) {
return __awaiter(this, void 0, void 0, function* () {
this.id = resp.id;
this.handled = 0;
this.inboundStarted = true;
yield this._cache();
});
}
resumed(resp) {
return __awaiter(this, void 0, void 0, function* () {
this.id = resp.previousSession;
this.inboundStarted = true;
yield this.process(resp, true);
yield this._cache();
});
}
failed(resp) {
return __awaiter(this, void 0, void 0, function* () {
// Resumption might fail, but the server can still tell us how far
// the old session progressed.
yield this.process(resp);
// We alert that any remaining unacked stanzas failed to send. It has
// been too long for auto-retrying these to be the right thing to do.
for (const [kind, stanza] of this.unacked) {
this.emit('failed', { kind, stanza });
}
this._reset();
yield this._cache();
});
}
ack() {
this.emit('send', {
handled: this.handled,
type: 'ack'
});
}
request() {
this.emit('send', {
type: 'request'
});
}
process(ack, resend = false) {
return __awaiter(this, void 0, void 0, function* () {
if (ack.handled === undefined) {
return;
}
const numAcked = mod(ack.handled - this.lastAck, MAX_SEQ);
for (let i = 0; i < numAcked && this.unacked.length > 0; i++) {
const [kind, stanza] = this.unacked.shift();
this.emit('acked', { kind, stanza });
}
this.lastAck = ack.handled;
if (resend) {
const resendUnacked = this.unacked;
this.unacked = [];
if (resendUnacked.length) {
this.emit('begin-resend');
for (const [kind, stanza] of resendUnacked) {
this.emit('resend', { kind, stanza });
}
this.emit('end-resend');
}
}
yield this._cache();
});
}
track(kind, stanza) {
return __awaiter(this, void 0, void 0, function* () {
if (kind === 'sm' && (stanza.type === 'enable' || stanza.type === 'resume')) {
if (stanza.type !== 'resume') {
this.handled = 0;
}
this.outboundStarted = true;
yield this._cache();
return false;
}
if (!this.outboundStarted) {
return false;
}
if (kind !== 'message' && kind !== 'presence' && kind !== 'iq') {
return false;
}
this.unacked.push([kind, stanza]);
yield this._cache();
return true;
});
}
handle() {
return __awaiter(this, void 0, void 0, function* () {
if (this.inboundStarted) {
this.handled = mod(this.handled + 1, MAX_SEQ);
yield this._cache();
}
});
}
hibernate() {
return __awaiter(this, void 0, void 0, function* () {
if (!this.resumable) {
return this.shutdown();
}
for (const [kind, stanza] of this.unacked) {
this.emit('hibernated', { kind, stanza });
}
});
}
shutdown() {
return __awaiter(this, void 0, void 0, function* () {
return this.failed({ type: 'failed' });
});
}
_cache() {
return __awaiter(this, void 0, void 0, function* () {
try {
yield this.cacheHandler({
allowResume: this.allowResume,
handled: this.handled,
id: this.id,
jid: this.jid,
lastAck: this.lastAck,
unacked: this.unacked
});
}
catch (err) {
// TODO: Is there a good way to handle this?
// istanbul ignore next
console.error('Failed to cache stream state', err);
}
});
}
_reset() {
this.id = '';
this.inboundStarted = false;
this.outboundStarted = false;
this.lastAck = 0;
this.handled = 0;
this.unacked = [];
}
}
const TABLE_DATA = {
'A.1': {
r: 'hk:if|le:lf|nf:nv|qg:qv|rg:rj|rm:rp|rr:rt|rv:s3|vn:vv|17m:17n|17q:17v|18g:19g|1an:1ao|1cb:1cg|1e5:1ef|1fb:1ff|1fl:1gb|1gd:1gq|1gs:1gu|1hr:1hv|1im:1iv|1ne:1nf|1pd:1pf|1qb:1rv|1ti:280|29q:29r|2ae:2af|2al:2an|2bh:2c0|2cd:2ce|2ch:2ci|2dj:2dl|2dq:2dr|2e5:2e6|2e9:2ea|2ee:2em|2eo:2er|2f4:2f5|2fr:2g1|2g3:2g4|2gb:2ge|2gh:2gi|2hq:2hr|2i3:2i6|2i9:2ia|2ie:2io|2iv:2j5|2jl:2k0|2lq:2lr|2me:2mf|2mh:2mv|2n1:2n5|2ng:2o0|2od:2oe|2oh:2oi|2pk:2pl|2pq:2pr|2q4:2q6|2q9:2qa|2qe:2ql|2qo:2qr|2r2:2r5|2rh:2s1|2sb:2sd|2sm:2so|2t0:2t2|2t5:2t7|2tb:2td|2tq:2tt|2u3:2u5|2ue:2um|2uo:2v6|2vj:300|31q:31t|32e:32k|32n:32v|332:335|33g:341|35q:35t|36e:36k|36n:36t|372:375|37g:381|39q:39t|3a4:3a5|3ae:3am|3ao:3av|3b2:3b5|3bg:3c1|3cn:3cp|3du:3dv|3e7:3e9|3eb:3ee|3f0:3fh|3fl:3g0|3hr:3hu|3is:3k0|3k5:3k6|3kb:3kc|3ke:3kj|3l8:3l9|3lu:3lv|3me:3mf|3mq:3mr|3mu:3nv|3rb:3rg|3sc:3sf|3ud:3ue|3ug:3vv|41j:41l|41q:41v|42q:44v|466:46f|47p:47q|47s:47v|4aq:4au|4d3:4d7|4fq:4fv|4ie:4if|4iu:4iv|4ke:4kf|4lm:4ln|4m6:4m7|4om:4on|4qr:4r0|4rt:4sv|4vl:500|5jn:5jv|5kt:5kv|5nh:5nv|5ol:5ov|5pn:5pv|5qk:5qv|5rk:5rv|5ut:5uv|5va:5vv|60q:60v|63o:63v|65a:7fv|7ks:7kv|7nq:7nv|7om:7on|7ou:7ov|7q6:7q7|7qe:7qf|7ru:7rv|7uk:7ul|7vg:7vh|82j:82m|82o:82u|834:839|83i:83j|84f:84v|85i:86f|87b:87v|89r:89s|8ac:8ai|8c4:8cf|8uf:8vv|917:91v|92b:92v|9gk:9gl|9ju:9jv|9ka:9o0|9oa:9ob|9qj:9ql|9qv:9r0|9sl:9sn|9tv:9uf|9vc:9vf|ao0:bjv|bnk:bnv|bum:bvf|bvs:bvv|c4n:c4o|c80:c84|c9d:c9g|cdo:cff|cgt:cgv|ci4:cig|cjs:cju|cmc:cmf|crn:crq|cuu:cuv|jdm:jfv|17t6:17vv|194d:194f|1967:1avv|1lt4:1lvv|1uhe:1uhf|1ujb:1unv|1uo7:1uoi|1uoo:1uos|1uti:1uui|1va0:1vaf|1vcg:1vch|1ve8:1vef|1vft:1vfv|1vgg:1vgv|1vh4:1vhf|1vi7:1vi8|1vjc:1vjf|1vnt:1vnu|1vtv:1vu1|1vu8:1vu9|1vug:1vuh|1vuo:1vup|1vut:1vuv|1vvf:1vvo|2000:20nv|20p4:20pf|20qb:20vv|2116:2117|212e:3jvv|3k7m:3k7v|3k97:3k99|3keu:3kvv|3l50:3l51|3l53:3l54|3l57:3l58|3l8b:3l8c|3la7:3la9|3ll4:3ll7|3lua:3lud|3m00:3vvt|59mn:5tvv|5ugu:5vvt|6000:7vvt|8000:9vvt|a000:bvvt|c000:dvvt|e000:fvvt|g000:hvvt|i000:jvvt|k000:lvvt|m000:nvvt|o000:pvvt|q000:rvvt|s002:s00v|s040:tvvt',
s: '9p8|9qc|9qe|9qn|9tg|147|bkq|3l2l|3l4t|3l5d|3l5q|3l5s|3l61|3l64|3l86|3l8l|3l8t|3l9q|3l9v|3la5|3lah|16f|c20|ccf|cnv|cvv|1b0|1c8|1d2|1dq|1h0|1nv|1oe|284|2c4|2d9|2dh|2dt|2eu|2h9|2hh|2hk|2hn|2ht|2it|2k4|2kc|2ke|2ki|2l9|2lh|2lk|2m6|2ma|2o4|2p9|2ph|2qu|2s4|2sh|2sr|2st|2tm|2u9|304|30d|30h|319|31k|325|329|344|34d|34h|359|35k|365|369|36v|384|38d|38h|399|3a9|3c4|3di|3ds|3el|3en|3k3|3k9|3ko|3l0|3l4|3l6|3lc|3lq|3m5|3m7|3q8|3so|3tt|412|418|41b|4g7|4i7|4i9|4in|4ip|4k7|4k9|4lf|4lh|4lv|4m1|4mf|4mn|4nf|4of|4oh|4ov|4q7|h1|5od|5rd|5rh|60f|1upn|1upt|1upv|1uq2|1uq5|1vij|1vj7|1vjl|1vo0|1vv7|20ov|7qo|7qq|7qs|7qu|7tl|7u5|7us|7vl|7vv|sb|sd|s000|t2|97v|uf|9go|9o5'
},
'B.1': {
r: '60b:60d|80b:80d|1vg0:1vgf',
s: '5d|606|1vnv|830|qf'
},
'B.2': {
m: 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r: '23:2c|2i:2k|2m:2q|60:6m|6o:6u|bo:bp|c1:c2|c6:c7|c9:cb|ce:ch|cj:ck|cm:co|cs:ct|cv:d0|d6:d7|de:df|dh:dj|dn:do|e4:e5|e7:e8|ea:eb|fh:fi|fm:fo|s8:sa|se:sf|sh:t1|t3:tb|100:11f|19h:1am|7o8:7of|7oo:7ot|7p8:7pf|7po:7pv|7q8:7qd|7r8:7rf|7to:7tr|7u8:7ub|7uo:7ur|7v8:7vc|7vo:7vr|89a:89b|8b0:8bf|95m:96f|1vp1:1vpq|2100:2115',
s: 'v8|va|vc|ve|vk|130|132|134|136|138|13a|13c|13e|13g|13i|13k|13m|13o|13q|13s|13u|140|14a|14c|14e|14g|14i|14k|14m|14o|14q|14s|14u|150|152|154|156|158|15a|15c|15e|15g|15i|15k|15m|15o|15q|15s|15u|161|163|165|167|169|16b|16d|16g|16i|16k|16m|16o|16q|16s|16u|170|172|174|176|178|17a|17c|17e|17g|17i|17k|17o|180|182|184|186|188|18a|18c|18e|80|82|84|86|88|8a|8c|8e|8g|8i|8k|8m|8o|8q|8s|8u|90|92|94|96|98|9a|9c|9e|9i|9k|9m|9p|9r|9t|9v|a1|a3|a5|a7|aa|ac|ae|ag|ai|ak|am|ao|aq|as|au|b0|b2|b4|b6|b8|ba|bc|be|bg|bi|bk|bm|br|bt|c4|d2|d4|d9|dc|dl|ds|ed|ef|eh|ej|el|en|ep|er|eu|f0|f2|f4|f6|f8|fa|fc|fe|fk|fq|fs|fu|g0|g2|g4|g6|g8|ga|gc|ge|gg|gi|gk|gm|go|gq|gs|gu|h0|h2|h4|h6|h8|ha|hc|he|hg|hi|21|22|7g0|7g2|7g4|7g6|7g8|7ga|7gc|7ge|7gg|7gi|2d|7gk|7gm|7go|7gq|7gs|7gu|7h0|7h2|7h4|7h6|7h8|7ha|7hc|7he|7hg|7hi|7hk|7hm|7ho|7hq|7hs|7hu|7i0|7i2|7i4|7i6|7i8|7ia|7ic|7ie|7ig|7ii|7ik|7im|7io|7iq|7is|7iu|7j0|7j2|7j4|7j6|7j8|7ja|7jc|7je|7jg|7ji|7jk|7jm|2e|7jo|7jq|7js|7ju|7k0|7k2|7k4|7k6|7k8|7ka|7kc|7ke|7kg|7ki|7kk|7l0|7l2|7l4|7l6|7l8|7la|7lc|7le|7lg|7li|7lk|7lm|7lo|7lq|7ls|7lu|7m0|7m2|7m4|7m6|7m8|7ma|7mc|7me|7mg|7mi|7mk|7mm|7mo|7mq|2f|7ms|7mu|7n0|7n2|7n4|7n6|7n8|7na|7nc|7ne|7ng|7ni|7nk|7nm|7no|2g|7qp|7qr|7qt|7qv|2h|896|2l|s6|sc|uo|uq|us|uu|v0|v2|v4|v6'
},
'B.3': {
m: '5l:ts|6v:3j;3j|9g:39;o7|a9:ls;3e|bv:3j|fg:3a;oc|q5:tp|sg:tp;o8;o1|tg:u5;o8;o1|u2:u3|ug:ti|uh:to|ul:u6|um:u0|vg:tq|vh:u1|vi:u3|vl:tl|1c7:1b5;1c2|7km:38;ph|7kn:3k;o8|7ko:3n;oa|7kp:3p;oa|7kq:31;lu|7kr:7j1|7qg:u5;oj|7qi:u5;oj;o0|7qk:u5;oj;o1|7qm:u5;oj;q2|7s0:7o0;tp|7s1:7o1;tp|7s2:7o2;tp|7s3:7o3;tp|7s4:7o4;tp|7s5:7o5;tp|7s6:7o6;tp|7s7:7o7;tp|7s8:7o0;tp|7s9:7o1;tp|7sa:7o2;tp|7sb:7o3;tp|7sc:7o4;tp|7sd:7o5;tp|7se:7o6;tp|7sf:7o7;tp|7sg:7p0;tp|7sh:7p1;tp|7si:7p2;tp|7sj:7p3;tp|7sk:7p4;tp|7sl:7p5;tp|7sm:7p6;tp|7sn:7p7;tp|7so:7p0;tp|7sp:7p1;tp|7sq:7p2;tp|7sr:7p3;tp|7ss:7p4;tp|7st:7p5;tp|7su:7p6;tp|7sv:7p7;tp|7t0:7r0;tp|7t1:7r1;tp|7t2:7r2;tp|7t3:7r3;tp|7t4:7r4;tp|7t5:7r5;tp|7t6:7r6;tp|7t7:7r7;tp|7t8:7r0;tp|7t9:7r1;tp|7ta:7r2;tp|7tb:7r3;tp|7tc:7r4;tp|7td:7r5;tp|7te:7r6;tp|7tf:7r7;tp|7ti:7rg;tp|7tj:th;tp|7tk:tc;tp|7tm:th;q2|7tn:th;q2;tp|7ts:th;tp|7tu:tp|7u2:7rk;tp|7u3:tn;tp|7u4:te;tp|7u6:tn;q2|7u7:tn;q2;tp|7uc:tn;tp|7ui:tp;o8;o0|7uj:tp;o8;o1|7um:tp;q2|7un:tp;o8;q2|7v2:u5;o8;o0|7v3:u5;o8;o1|7v4:u1;oj|7v6:u5;q2|7v7:u5;o8;q2|7vi:7rs;tp|7vj:u9;tp|7vk:ue;tp|7vm:u9;q2|7vn:u9;q2;tp|7vs:u9;tp|1uo0:36;36|1uo1:36;39|1uo2:36;3c|1uo3:36;36;39|1uo4:36;36;3c|1uo5:3j;3k|1uo6:3j;3k|1uoj:1bk;1bm|1uok:1bk;1b5|1uol:1bk;1bb|1uom:1bu;1bm|1uon:1bk;1bd',
r: '23:2c|2i:2k|2m:2q|60:6m|6o:6u|bo:bp|c1:c2|c6:c7|c9:cb|ce:ch|cj:ck|cm:co|cs:ct|cv:d0|d6:d7|de:df|dh:dj|dn:do|e4:e5|e7:e8|ea:eb|fh:fi|fm:fo|s8:sa|se:sf|sh:t1|t3:tb|100:11f|19h:1am|7o8:7of|7oo:7ot|7p8:7pf|7po:7pv|7q8:7qd|7r8:7rf|7to:7tr|7u8:7ub|7uo:7ur|7v8:7vc|7vo:7vr|89a:89b|8b0:8bf|95m:96f|1vp1:1vpq|2100:2115',
s: 'v8|va|vc|ve|vk|130|132|134|136|138|13a|13c|13e|13g|13i|13k|13m|13o|13q|13s|13u|140|14a|14c|14e|14g|14i|14k|14m|14o|14q|14s|14u|150|152|154|156|158|15a|15c|15e|15g|15i|15k|15m|15o|15q|15s|15u|161|163|165|167|169|16b|16d|16g|16i|16k|16m|16o|16q|16s|16u|170|172|174|176|178|17a|17c|17e|17g|17i|17k|17o|180|182|184|186|188|18a|18c|18e|80|82|84|86|88|8a|8c|8e|8g|8i|8k|8m|8o|8q|8s|8u|90|92|94|96|98|9a|9c|9e|9i|9k|9m|9p|9r|9t|9v|a1|a3|a5|a7|aa|ac|ae|ag|ai|ak|am|ao|aq|as|au|b0|b2|b4|b6|b8|ba|bc|be|bg|bi|bk|bm|br|bt|c4|d2|d4|d9|dc|dl|ds|ed|ef|eh|ej|el|en|ep|er|eu|f0|f2|f4|f6|f8|fa|fc|fe|fk|fq|fs|fu|g0|g2|g4|g6|g8|ga|gc|ge|gg|gi|gk|gm|go|gq|gs|gu|h0|h2|h4|h6|h8|ha|hc|he|hg|hi|21|22|7g0|7g2|7g4|7g6|7g8|7ga|7gc|7ge|7gg|7gi|2d|7gk|7gm|7go|7gq|7gs|7gu|7h0|7h2|7h4|7h6|7h8|7ha|7hc|7he|7hg|7hi|7hk|7hm|7ho|7hq|7hs|7hu|7i0|7i2|7i4|7i6|7i8|7ia|7ic|7ie|7ig|7ii|7ik|7im|7io|7iq|7is|7iu|7j0|7j2|7j4|7j6|7j8|7ja|7jc|7je|7jg|7ji|7jk|7jm|2e|7jo|7jq|7js|7ju|7k0|7k2|7k4|7k6|7k8|7ka|7kc|7ke|7kg|7ki|7kk|7l0|7l2|7l4|7l6|7l8|7la|7lc|7le|7lg|7li|7lk|7lm|7lo|7lq|7ls|7lu|7m0|7m2|7m4|7m6|7m8|7ma|7mc|7me|7mg|7mi|7mk|7mm|7mo|7mq|2f|7ms|7mu|7n0|7n2|7n4|7n6|7n8|7na|7nc|7ne|7ng|7ni|7nk|7nm|7no|2g|7qp|7qr|7qt|7qv|2h|896|2l|s6|sc|uo|uq|us|uu|v0|v2|v4|v6'
},
'C.1.1': {
s: '10'
},
'C.1.2': {
r: '800:80b',
s: 'c00|50|5k0|81f|82v'
},
'C.2.1': {
r: '0:v',
s: '3v'
},
'C.2.2': {
r: '40:4v|80c:80d|818:819|830:833|83a:83f|1vvp:1vvs|3kbj:3kbq',
s: '1mt|1of|60e|1vnv'
},
'C.3': {
r: '1o00:1u7v|u000:vvvt|10000:11vvt'
},
'C.4': {
r: '1veg:1vff|1vvu:1vvv|3vvu:3vvv|5vvu:5vvv|7vvu:7vvv|9vvu:9vvv|bvvu:bvvv|dvvu:dvvv|fvvu:fvvv|hvvu:hvvv|jvvu:jvvv|lvvu:lvvv|nvvu:nvvv|pvvu:pvvv|rvvu:rvvv|tvvu:tvvv|vvvu:vvvv|11vvu:11vvv'
},
'C.5': {
r: '1m00:1nvv'
},
'C.6': {
r: '1vvp:1vvt'
},
'C.7': {
r: 'bvg:bvr'
},
'C.8': {
r: 'q0:q1|80e:80f|81a:81e|83a:83f'
},
'C.9': {
r: 's010:s03v',
s: 's001'
},
'D.1': {
r: '1eg:1fa|1fg:1fk|1h1:1hq|1i0:1ia|1jd:1jf|1jh:1ml|1n5:1n6|1nq:1nu|1o0:1od|1oi:1pc|1s0:1t5|1uov:1up8|1upa:1upm|1upo:1ups|1uq0:1uq1|1uq3:1uq4|1uq6:1uth|1uuj:1v9t|1vag:1vcf|1vci:1ve7|1vfg:1vfs|1vjg:1vjk|1vjm:1vns',
s: '1du|1e0|1e3|1gr|1gv|1mt|1og|1th|1uot|1upu|80f'
},
'D.2': {
r: '21:2q|31:3q|60:6m|6o:7m|7o:h0|h2:hj|ig:ld|lg:lo|lr:m1|mg:mh|n0:n4|s8:sa|se:t1|t3:ue|ug:vl|100:142|14a:16e|16g:17l|17o:17p|180:18f|19h:1am|1ap:1av|1b1:1c7|285:29p|29t:2a0|2a9:2ac|2ao:2b1|2b4:2bg|2c2:2c3|2c5:2cc|2cf:2cg|2cj:2d8|2da:2dg|2dm:2dp|2du:2e0|2e7:2e8|2eb:2ec|2es:2et|2ev:2f1|2f6:2fh|2fk:2fq|2g5:2ga|2gf:2gg|2gj:2h8|2ha:2hg|2hi:2hj|2hl:2hm|2ho:2hp|2hu:2i0|2ip:2is|2j6:2jf|2ji:2jk|2k5:2kb|2kf:2kh|2kj:2l8|2la:2lg|2li:2lj|2ll:2lp|2lt:2m0|2mb:2mc|2n6:2nf|2o2:2o3|2o5:2oc|2of:2og|2oj:2p8|2pa:2pg|2pi:2pj|2pm:2pp|2pt:2pu|2q7:2q8|2qb:2qc|2qs:2qt|2qv:2r1|2r6:2rg|2s5:2sa|2se:2sg|2si:2sl|2sp:2sq|2su:2sv|2t3:2t4|2t8:2ta|2te:2tl|2tn:2tp|2tu:2tv|2u1:2u2|2u6:2u8|2ua:2uc|2v7:2vi|301:303|305:30c|30e:30g|30i:318|31a:31j|31l:31p|321:324|330:331|336:33f|342:343|345:34c|34e:34g|34i:358|35a:35j|35l:35p|360:364|367:368|36a:36b|36l:36m|370:371|376:37f|382:383|385:38c|38e:38g|38i:398|39a:39p|39u:3a0|3a6:3a8|3aa:3ac|3b0:3b1|3b6:3bf|3c2:3c3|3c5:3cm|3cq:3dh|3dj:3dr|3e0:3e6|3ef:3eh|3eo:3ev|3fi:3fk|3g1:3hg|3hi:3hj|3i0:3i6|3if:3ir|3k1:3k2|3k7:3k8|3kk:3kn|3kp:3kv|3l1:3l3|3la:3lb|3ld:3lg|3li:3lj|3m0:3m4|3mg:3mp|3ms:3mt|3o0:3on|3oq:3pk|3pu:3q7|3q9:3ra|3s8:3sb|3tu:3u5|3u7:3uc|400:411|413:417|419:41a|420:42n|450:465|46g:47o|480:4ap|4av:4d2|4d8:4fp|4g0:4g6|4g8:4i6|4ia:4id|4ig:4im|4iq:4it|4j0:4k6|4ka:4kd|4kg:4le|4li:4ll|4lo:4lu|4m2:4m5|4m8:4me|4mg:4mm|4mo:4ne|4ng:4oe|4oi:4ol|4oo:4ou|4p0:4q6|4q8:4qq|4r1:4rs|4t0:4vk|501:5jm|5k1:5kq|5l0:5ng|5o0:5oc|5oe:5oh|5p0:5ph|5pl:5pm|5q0:5qh|5r0:5rc|5re:5rg|5s0:5tm|5tu:5u5|5u7:5u8|5uk:5uq|5v0:5v9|60g:60p|610:63n|640:658|7g0:7kr|7l0:7np|7o0:7ol|7oo:7ot|7p0:7q5|7q8:7qd|7qg:7qn|7qv:7rt|7s0:7tk|7tm:7ts|7u2:7u4|7u6:7uc|7ug:7uj|7um:7ur|7v0:7vc|7vi:7vk|7vm:7vs|88a:88j|88p:88t|89a:89d|89f:89h|89j:89p|89t:89v|8a5:8a9|8b0:8c3|8pm:8rq|94s:979|c05:c07|c11:c19|c1h:c1l|c1o:c1s|c21:c4m|c4t:c4v|c51:c7q|c7s:c7v|c85:c9c|c9h:cce|ccg:cdn|cfg:cgs|ch0:ci3|cj0:cjr|cjv:clg|cm0:cmb|cmg:cnu|co0:crm|crr:cut|cv0:cvu|d00:jdl|jg0:17t5|1800:194c|1b00:1lt3|1m00:1uhd|1uhg:1uja|1uo0:1uo6|1uoj:1uon|1vp1:1vpq|1vq1:1vqq|1vr6:1vtu|1vu2:1vu7|1vua:1vuf|1vui:1vun|1vuq:1vus|20o0:20ou|20p0:20p3|20pg:20qa|2100:2115|2118:212d|3k00:3k7l|3k80:3k96|3k9a:3kb6|3kba:3kbi|3kc3:3kc4|3kcc:3kd9|3kde:3ket|3l00:3l2k|3l2m:3l4s|3l4u:3l4v|3l55:3l56|3l59:3l5c|3l5e:3l5p|3l5t:3l60|3l62:3l63|3l65:3l85|3l87:3l8a|3l8d:3l8k|3l8m:3l8s|3l8u:3l9p|3l9r:3l9u|3la0:3la4|3laa:3lag|3lai:3ll3|3ll8:3lu9|4000:59mm|5u00:5ugt|u000:vvvt|10000:11vvt',
s: '3l52|3l5r|3la6|1c9|5a|5l|5q|283|2ag|2di|2en|2iu|2k3|2kd|2m9|2mg|2n0|2q0|2qn|2s3|2ss|2un|35u|36u|3an|3dt|3k4|3ka|3kd|3l5|3l7|3lt|3m6|3pm|3po|3rv|3s5|3uf|41c|41h|41o|47r|4i8|4io|4k8|4lg|4m0|4og|5us|ne|7qp|7qr|7qt|7tu|80e|83h|83v|882|887|88l|894|896|898|rq|s6|sc|8sl'
}
};
class Table {
constructor(name, points) {
this.singles = new Set();
this.ranges = [];
this.mappings = new Map();
const data = TABLE_DATA[name];
this.name = name;
if (data) {
if (data.s) {
this.singles = new Set(data.s.split('|').map(s => parseInt(s, 32)));
}
if (data.r) {
this.ranges = data.r.split('|').map(r => {
const [start, end] = r.split(':');
return [parseInt(start, 32), parseInt(end, 32)];
});
}
if (data.m) {
this.mappings = new Map(data.m.split('|').map(m => {
const [point, mapping] = m.split(':');
const mappedPoints = mapping.split(';').map(p => parseInt(p, 32));
return [parseInt(point, 32), mappedPoints];
}));
}
}
else if (points) {
this.singles = new Set(points);
}
}
contains(codePoint) {
if (this.singles.has(codePoint)) {
return true;
}
let left = 0;
let right = this.ranges.length - 1;
while (left <= right) {
const pivot = Math.floor((left + right) / 2);
const range = this.ranges[pivot];
if (codePoint < range[0]) {
right = pivot - 1;
continue;
}
if (codePoint > range[1]) {
left = pivot + 1;
continue;
}
return true;
}
return false;
}
hasMapping(codePoint) {
return this.mappings.has(codePoint) || this.contains(codePoint);
}
map(codePoint) {
if (this.contains(codePoint) && !this.mappings.has(codePoint)) {
return String.fromCodePoint(codePoint).toLowerCase().codePointAt(0);
}
return this.mappings.get(codePoint) || null;
}
}
const A1 = new Table('A.1');
const B1 = new Table('B.1');
const B2 = new Table('B.2');
const B3 = new Table('B.3');
const C11 = new Table('C.1.1');
const C12 = new Table('C.1.2');
const C21 = new Table('C.2.1');
const C22 = new Table('C.2.2');
const C3 = new Table('C.3');
const C4 = new Table('C.4');
const C5 = new Table('C.5');
const C6 = new Table('C.6');
const C7 = new Table('C.7');
const C8 = new Table('C.8');
const C9 = new Table('C.9');
const D1 = new Table('D.1');
const D2 = new Table('D.2');
// Shortcut some of the simpler table operations
B1.map = () => {
return null;
};
C11.contains = (codePoint) => codePoint === 32;
C12.map = (codePoint) => {
return C12.contains(codePoint) ? 32 : null;
};
function prepare(profile, allowUnassigned, input = '') {
const inputCodePoints = Punycode.ucs2.decode(input);
let mappedCodePoints = [];
for (const codePoint of inputCodePoints) {
if (!allowUnassigned && profile.unassigned.contains(codePoint)) {
throw new Error('Unassigned code point: x' + codePoint.toString(16));
}
let hasMapping = false;
for (const mappingTable of profile.mappings) {
if (!mappingTable.hasMapping(codePoint)) {
continue;
}
hasMapping = true;
const mappedPoint = mappingTable.map(codePoint);
if (!mappedPoint) {
continue;
}
if (Array.isArray(mappedPoint)) {
mappedCodePoints = mappedCodePoints.concat(mappedPoint);
}
else {
mappedCodePoints.push(mappedPoint);
}
}
if (!hasMapping) {
mappedCodePoints.push(codePoint);
}
}
let normalizedCodePoints = mappedCodePoints;
if (profile.normalize) {
const mappedString = Punycode.ucs2.encode(mappedCodePoints);
const normalizedString = mappedString.normalize('NFKC');
normalizedCodePoints = Punycode.ucs2.decode(normalizedString);
}
let hasRandALCat = false;
let hasLCat = false;
for (const codePoint of normalizedCodePoints) {
for (const prohibited of profile.prohibited) {
if (prohibited.contains(codePoint)) {
throw new Error('Prohibited code point: x' + codePoint.toString(16));
}
}
if (!allowUnassigned && profile.unassigned.contains(codePoint)) {
// istanbul ignore next
throw new Error('Prohibited code point: x' + codePoint.toString(16));
}
if (profile.bidirectional) {
hasRandALCat = hasRandALCat || D1.contains(codePoint);
hasLCat = hasLCat || D2.contains(codePoint);
}
}
if (profile.bidirectional) {
if (hasRandALCat && hasLCat) {
throw new Error('String contained both LCat and RandALCat code points');
}
if (hasRandALCat &&
(!D1.contains(normalizedCodePoints[0]) ||
!D1.contains(normalizedCodePoints[normalizedCodePoints.length - 1]))) {
throw new Error('String containing RandALCat code points must start and end with RandALCat code points');
}
}
return Punycode.ucs2.encode(normalizedCodePoints);
}
const NamePrepProfile = {
bidirectional: true,
mappings: [B1, B2],
normalize: true,
prohibited: [C12, C22, C3, C4, C5, C6, C7, C8, C9],
unassigned: A1
};
function nameprep(str, allowUnassigned = true) {
return prepare(NamePrepProfile, allowUnassigned, str);
}
const NodePrepProhibited = new Table('NodePrepProhibited', [
0x22,
0x26,
0x27,
0x2f,
0x3a,
0x3c,
0x3e,
0x40
]);
const NodePrepProfile = {
bidirectional: true,
mappings: [B1, B2],
normalize: true,
prohibited: [C11, C12, C21, C22, C3, C4, C5, C6, C7, C8, C9, NodePrepProhibited],
unassigned: A1
};
function nodeprep(str, allowUnassigned = true) {
return prepare(NodePrepProfile, allowUnassigned, str);
}
const ResourcePrepProfile = {
bidirectional: true,
mappings: [B1],
normalize: true,
prohibited: [C12, C21, C22, C3, C4, C5, C6, C7, C8, C9],
unassigned: A1
};
function resourceprep(str, allowUnassigned = true) {
return prepare(ResourcePrepProfile, allowUnassigned, str);
}
const SASLPrepProfile = {
bidirectional: true,
mappings: [C12, B1],
normalize: true,
prohibited: [C12, C21, C22, C3, C4, C5, C6, C7, C8, C9],
unassigned: A1
};
function saslprep(str, allowUnassigned = false) {
return prepare(SASLPrepProfile, allowUnassigned, str);
}
function escapeLocal(val = '') {
return val
.replace(/^\s+|\s+$/g, '')
.replace(/\\5c/g, '\\5c5c')
.replace(/\\20/g, '\\5c20')
.replace(/\\22/g, '\\5c22')
.replace(/\\26/g, '\\5c26')
.replace(/\\27/g, '\\5c27')
.replace(/\\2f/g, '\\5c2f')
.replace(/\\3a/g, '\\5c3a')
.replace(/\\3c/g, '\\5c3c')
.replace(/\\3e/g, '\\5c3e')
.replace(/\\40/g, '\\5c40')
.replace(/ /g, '\\20')
.replace(/"/g, '\\22')
.replace(/&/g, '\\26')
.replace(/'/g, '\\27')
.replace(/\//g, '\\2f')
.replace(/:/g, '\\3a')
.replace(/</g, '\\3c')
.replace(/>/g, '\\3e')
.replace(/@/g, '\\40');
}
function unescapeLocal(val) {
return val
.replace(/\\20/g, ' ')
.replace(/\\22/g, '"')
.replace(/\\26/g, '&')
.replace(/\\27/g, `'`)
.replace(/\\2f/g, '/')
.replace(/\\3a/g, ':')
.replace(/\\3c/g, '<')
.replace(/\\3e/g, '>')
.replace(/\\40/g, '@')
.replace(/\\5c/g, '\\');
}
function prepare$1(data) {
let local = data.local || '';
let domain = data.domain;
let resource = data.resource || '';
if (local) {
local = nodeprep(local);
}
if (resource) {
resource = resourceprep(resource);
}
if (domain[domain.length - 1] === '.') {
domain = domain.slice(0, domain.length - 1);
}
domain = nameprep(domain.split('.').map(Punycode.toUnicode).join('.'));
return {
domain,
local,
resource
};
}
function create(data, opts = {}) {
let localPart = data.local;
if (!opts.escaped) {
localPart = escapeLocal(data.local);
}
const prep = !opts.prepared
? prepare$1({ local: localPart, domain: data.domain, resource: data.resource })
: data;
const bareJID = localPart ? `${localPart}@${prep.domain}` : prep.domain;
if (prep.resource) {
return `${bareJID}/${prep.resource}`;
}
return bareJID;
}
function createFull(bare, resource) {
if (resource) {
return `${toBare(bare)}/${resource}`;
}
else {
return toBare(bare);
}
}
function parse(jid = '') {
let local = '';
let domain = '';
let resource = '';
const resourceStart = jid.indexOf('/');
if (resourceStart > 0) {
resource = jid.slice(resourceStart + 1);
jid = jid.slice(0, resourceStart);
}
const localEnd = jid.indexOf('@');
if (localEnd > 0) {
local = jid.slice(0, localEnd);
jid = jid.slice(localEnd + 1);
}
domain = jid;
const prepped = prepare$1({
domain,
local,
resource
});
return {
bare: create({ local: prepped.local, domain: prepped.domain }, {
escaped: true,
prepared: true
}),
domain: prepped.domain,
full: create(prepped, {
escaped: true,
prepared: true
}),
local: unescapeLocal(prepped.local),
resource: prepped.resource
};
}
function allowedResponders(jid1, jid2) {
const allowed = new Set();
allowed.add(undefined);
allowed.add('');
if (jid1) {
const split1 = parse(jid1);
allowed.add(split1.full);
allowed.add(split1.bare);
allowed.add(split1.domain);
}
if (jid2) {
const split2 = parse(jid2);
allowed.add(split2.domain);
allowed.add(split2.bare);
allowed.add(split2.full);
}
return allowed;
}
function equal(jid1, jid2) {
if (!jid1 || !jid2) {
return false;
}
const parsed1 = parse(jid1);
const parsed2 = parse(jid2);
return (parsed1.local === parsed2.local &&
parsed1.domain === parsed2.domain &&
parsed1.resource === parsed2.resource);
}
function equalBare(jid1, jid2) {
if (!jid1 || !jid2) {
return false;
}
const parsed1 = parse(jid1);
const parsed2 = parse(jid2);
return parsed1.local === parsed2.local && parsed1.domain === parsed2.domain;
}
function isFull(jid) {
const parsed = parse(jid);
return !!parsed.resource;
}
function isBare(jid) {
return !isFull(jid);
}
function getLocal(jid = '') {
return parse(jid).local;
}
function getDomain(jid = '') {
return parse(jid).domain;
}
function getResource(jid = '') {
return parse(jid).resource;
}
function toBare(jid = '') {
return parse(jid).bare;
}
function parseURI(val) {
const parsed = new URL(val);
if (parsed.protocol !== 'xmpp:') {
throw new Error('Invalid XMPP URI, wrong protocol: ' + parsed.protocol);
}
const identity = parsed.hostname
? parsed.username
? create({
domain: decodeURIComponent(parsed.hostname),
local: decodeURIComponent(parsed.username)
}, {
escaped: true
})
: decodeURIComponent(parsed.hostname)
: undefined;
const jid = parse(decodeURIComponent(identity ? parsed.pathname.substr(1) : parsed.pathname))
.full;
const hasParameters = parsed.search && parsed.search.indexOf(';') >= 1;
const parameterString = hasParameters
? parsed.search.substr(parsed.search.indexOf(';') + 1)
: '';
const action = parsed.search
? decodeURIComponent(parsed.search.substr(1, hasParameters ? parsed.search.indexOf(';') - 1 : undefined))
: undefined;
const params = {};
for (const token of parameterString.split(';')) {
const [name, value] = token.split('=').map(decodeURIComponent);
if (!params[name]) {
params[name] = value;
}
else {
const existing = params[name];
if (Array.isArray(existing)) {
existing.push(value);
}
else {
params[name] = [existing, value];
}
}
}
return {
action,
identity,
jid,
parameters: params
};
}
function toURI(data) {
const parts = ['xmpp:'];
const pushJID = (jid, allowResource) => {
const res = parse(jid);
if (res.local) {
parts.push(encodeURIComponent(escapeLocal(res.local)));
parts.push('@');
}
parts.push(encodeURIComponent(res.domain));
if (allowResource && res.resource) {
parts.push('/');
parts.push(encodeURIComponent(res.resource));
}
};
if (data.identity) {
parts.push('//');
pushJID(data.identity, false);
if (data.jid) {
parts.push('/');
}
}
if (data.jid) {
pushJID(data.jid, true);
}
if (data.action) {
parts.push('?');
parts.push(encodeURIComponent(data.action));
}
for (const [name, values] of Object.entries(data.parameters || {})) {
for (const val of Array.isArray(values) ? values : [values]) {
parts.push(';');
parts.push(encodeURIComponent(name));
if (val !== undefined) {
parts.push('=');
parts.push(encodeURIComponent(val));
}
}
}
return parts.join('');
}
var JID = /*#__PURE__*/Object.freeze({
__proto__: null,
escapeLocal: escapeLocal,
unescapeLocal: unescapeLocal,
prepare: prepare$1,
create: create,
createFull: createFull,
parse: parse,
allowedResponders: allowedResponders,
equal: equal,
equalBare: equalBare,
isFull: isFull,
isBare: isBare,
getLocal: getLocal,
getDomain: getDomain,
getResource: getResource,
toBare: toBare,
parseURI: parseURI,
toURI: toURI
});
var JXTErrorCondition;
(function (JXTErrorCondition) {
JXTErrorCondition["NotWellFormed"] = "not-well-formed";
JXTErrorCondition["RestrictedXML"] = "restricted-xml";
JXTErrorCondition["AlreadyClosed"] = "already-closed";
JXTErrorCondition["UnknownRoot"] = "unknown-stream-root";
})(JXTErrorCondition || (JXTErrorCondition = {}));
class JXTError extends Error {
constructor(opts) {
super(opts.text);
this.isJXTError = true;
this.condition = opts.condition;
this.text = opts.text;
}
static notWellFormed(text) {
return new JXTError({
condition: JXTErrorCondition.NotWellFormed,
text
});
}
static restrictedXML(text) {
return new JXTError({
condition: JXTErrorCondition.RestrictedXML,
text
});
}
static alreadyClosed(text) {
return new JXTError({
condition: JXTErrorCondition.AlreadyClosed,
text
});
}
static unknownRoot(text) {
return new JXTError({
condition: JXTErrorCondition.UnknownRoot,
text
});
}
}
const ESCAPE_XML_CHAR = {
'"': '"',
'&': '&',
"'": ''',
'<': '<',
'>': '>'
};
const UNESCAPE_XML_CHAR = {
'&': '&',
''': "'",
'>': '>',
'<': '<',
'"': '"'
};
const ESCAPE_SEQUENCE = /&([a-zA-Z0-9]+|#[0-9]+|#x[0-9a-fA-F]+);/g;
const NEED_ESCAPING = /&|<|>|"|'/g;
const NEED_ESCAPING_TEXT = /&|<|>/g;
function escapeXMLReplaceChar(match) {
return ESCAPE_XML_CHAR[match];
}
function unescapeXMLReplaceChar(match) {
if (UNESCAPE_XML_CHAR[match]) {
return UNESCAPE_XML_CHAR[match];
}
const hex = match.startsWith('&#x');
const code = parseInt(match.substring(hex ? 3 : 2, match.length - 1), hex ? 16 : 10);
if (code === 0x9 ||
code === 0xa ||
code === 0xd ||
(0x20 <= code && code <= 0xd7ff) ||
(0xe000 <= code && code <= 0xfffd) ||
(0x10000 <= code && code <= 0x10ffff)) {
return String.fromCodePoint(code);
}
throw JXTError.restrictedXML('Prohibited entity: ' + match);
}
function escapeXML(text) {
return text.replace(NEED_ESCAPING, escapeXMLReplaceChar);
}
function unescapeXML(text) {
return text.replace(ESCAPE_SEQUENCE, match => {
return unescapeXMLReplaceChar(match);
});
}
function escapeXMLText(text) {
return text.replace(NEED_ESCAPING_TEXT, escapeXMLReplaceChar);
}
function basicLanguageResolver(available, accept = [], current = '') {
const avail = new Set(available.map(a => a.toLowerCase()));
for (let acceptLang of accept.map(a => a.toLowerCase())) {
if (acceptLang === '*') {
continue;
}
while (acceptLang.length > 0) {
if (avail.has(acceptLang)) {
return acceptLang;
}
// Remove ending tag
acceptLang = acceptLang.substring(0, acceptLang.lastIndexOf('-')).toLowerCase();
// Remove leftover single character tag
if (acceptLang.lastIndexOf('-') === acceptLang.length - 2) {
acceptLang = acceptLang.substring(0, acceptLang.lastIndexOf('-'));
}
}
}
return current;
}
class XMLElement {
constructor(name, attrs = {}, children = []) {
this.name = name;
this.attributes = attrs;
this.children = [];
this.optionalNamespaces = {};
for (const child of children) {
if (typeof child !== 'string') {
const xmlChild = new XMLElement(child.name, child.attributes, child.children);
xmlChild.parent = this;
this.children.push(xmlChild);
}
else {
this.children.push(child);
}
}
}
getName() {
if (this.name.indexOf(':') >= 0) {
return this.name.substr(this.name.indexOf(':') + 1);
}
else {
return this.name;
}
}
getNamespace() {
if (this.name.indexOf(':') >= 0) {
const prefix = this.name.substr(0, this.name.indexOf(':'));
return this.findNamespaceForPrefix(prefix);
}
return this.findNamespaceForPrefix();
}
getNamespaceContext() {
let namespaces = {};
if (this.parent) {
namespaces = this.parent.getNamespaceContext();
}
for (const [attr, value] of Object.entries(this.attributes)) {
if (attr.startsWith('xmlns:')) {
const prefix = attr.substr(6);
namespaces[value] = prefix;
}
}
return namespaces;
}
getDefaultNamespace() {
if (this.attributes.xmlns) {
return this.attributes.xmlns;
}
if (this.parent) {
return this.parent.getDefaultNamespace();
}
return '';
}
getNamespaceRoot(namespace) {
if (this.parent) {
const parentRoot = this.parent.getNamespaceRoot(namespace);
if (parentRoot) {
return parentRoot;
}
}
for (const [attr, value] of Object.entries(this.attributes)) {
if (attr.startsWith('xmlns:') && value === namespace) {
return this;
}
}
if (this.optionalNamespaces[namespace]) {
return this;
}
return undefined;
}
getAttribute(name, xmlns) {
if (!xmlns) {
return this.attributes[name];
}
const namespaces = this.getNamespaceContext();
if (!namespaces[xmlns]) {
return undefined;
}
return this.attributes[[namespaces[xmlns], name].join(':')];
}
getChild(name, xmlns) {
return this.getChildren(name, xmlns)[0];
}
getChildren(name, xmlns) {
const result = [];
for (const child of this.children) {
if (typeof child !== 'string' &&
child.getName() === name &&
(!xmlns || child.getNamespace() === xmlns)) {
result.push(child);
}
}
return result;
}
getText() {
let text = '';
for (const child of this.children) {
if (typeof child === 'string') {
text += child;
}
}
return text;
}
appendChild(child) {
this.children.push(child);
if (typeof child !== 'string') {
child.parent = this;
}
return child;
}
setAttribute(attr, val, force = false) {
this.attributes[attr] = val || undefined;
if (val === '' && force) {
this.attributes[attr] = val;
}
}
addOptionalNamespace(prefix, namespace) {
this.optionalNamespaces[namespace] = prefix;
}
useNamespace(prefix, namespace) {
if (this.optionalNamespaces[namespace]) {
prefix = this.optionalNamespaces[namespace];
}
this.setAttribute(`xmlns:${prefix}`, namespace);
return prefix;
}
toJSON() {
const children = this.children
.map(child => {
if (typeof child === 'string') {
return child;
}
if (child) {
return child.toJSON();
}
})
.filter(child => !!child);
// Strip any undefined/null attributes
const attrs = {};
for (const [key, val] of Object.entries(this.attributes)) {
if (val !== undefined && val !== null) {
attrs[key] = val;
}
}
return {
attributes: attrs,
children,
name: this.name
};
}
toString() {
let output = this.openTag(true);
if (this.children.length) {
for (const child of this.children) {
if (typeof child === 'string') {
output += escapeXMLText(child);
}
else if (child) {
output += child.toString();
}
}
output += this.closeTag();
}
return output;
}
openTag(allowSelfClose = false) {
let output = '';
output += `<${this.name}`;
for (const [key, value] of Object.entries(this.attributes)) {
if (value !== undefined) {
output += ` ${key}="${escapeXML(value.toString())}"`;
}
}
if (allowSelfClose && this.children.length === 0) {
output += '/>';
}
else {
output += '>';
}
return output;
}
closeTag() {
return `</${this.name}>`;
}
findNamespaceForPrefix(prefix) {
if (!prefix) {
if (this.attributes.xmlns) {
return this.attributes.xmlns;
}
else if (this.parent) {
return this.parent.findNamespaceForPrefix();
}
}
else {
const attr = 'xmlns:' + prefix;
if (this.attributes[attr]) {
return this.attributes[attr];
}
else if (this.parent) {
return this.parent.findNamespaceForPrefix(prefix);
}
}
return '';
}
}
/**
* This file is derived from prior work.
*
* See NOTICE.md for full license text.
*
* Derived from: xhtml-im.js, Copyright © 2013 Waqas Hussain
*/
const ALLOWED_ELEMENTS = new Set([
'a',
'blockquote',
'br',
'cite',
'em',
'img',
'li',
'ol',
'p',
'span',
'strong',
'ul'
]);
const style = new Set(['style']);
const ALLOWED_ATTRIBUTES = new Map([
['a', new Set(['href', 'style'])],
['body', new Set(['style', 'xml:lang'])],
['blockquote', style],
['br', style],
['cite', style],
['em', style],
['img', new Set(['alt', 'height', 'src', 'style', 'width'])],
['li', style],
['ol', style],
['p', style],
['span', style],
['strong', style],
['ul', style]
]);
const CSS_RULES = new Map([
['font-style', /normal|italic|oblique|inherit/i],
['font-weight', /normal|bold|bolder|lighter|inherit|\d\d\d/i],
['text-decoration', /none|underline|overline|line-through|blink|inherit/i]
// These properties are allowed by XHTML-IM, but really only cause UX issues:
// background-color
// color
// font-family
// font-size
// margin-left
// margin-right
// text-align
]);
const sanitizeCSS = (css) => {
const declarations = `;${css}` // Declarations are ; delimited, not terminated
.replace(/\/\*[^*]*\*+([^/*][^*]*\*+)*\//g, '') // Strip comments
.replace(/\/\*.*/, '') // Strip