455 lines
12 KiB
JavaScript
455 lines
12 KiB
JavaScript
/**
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* 2011 Peter 'Pita' Martischka
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS-IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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var padManager = require("./PadManager");
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var Changeset = require("./Changeset");
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var AttributePoolFactory = require("./AttributePoolFactory");
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var authorManager = require("./AuthorManager");
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//var token2author = {};
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//var author2token = {};
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var session2pad = {};
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var pad2sessions = {};
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var sessioninfos = {};
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var socketio;
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exports.setSocketIO = function(socket_io)
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{
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socketio=socket_io;
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}
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exports.handleConnect = function(client)
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{
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throwExceptionIfClientOrIOisInvalid(client);
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session2pad[client.sessionId]=null;
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sessioninfos[client.sessionId]={};
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}
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exports.handleDisconnect = function(client)
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{
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throwExceptionIfClientOrIOisInvalid(client);
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var sessionPad=session2pad[client.sessionId];
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for(i in pad2sessions[sessionPad])
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{
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if(pad2sessions[sessionPad][i] == client.sessionId)
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{
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delete pad2sessions[sessionPad][i];
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break;
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}
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}
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delete session2pad[client.sessionId];
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delete sessioninfos[client.sessionId];
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}
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exports.handleMessage = function(client, message)
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{
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throwExceptionIfClientOrIOisInvalid(client);
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if(message == null)
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{
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throw "Message is null!";
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}
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if(typeof message == "string")
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{
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message = JSON.parse(message);
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}
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if(!message.type)
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{
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throw "Message have no type attribute!";
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}
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if(message.type == "CLIENT_READY")
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{
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handleClientReady(client, message);
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}
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else if(message.type == "COLLABROOM" &&
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message.data.type == "USER_CHANGES")
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{
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console.error(JSON.stringify(message));
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handleUserChanges(client, message);
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}
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else if(message.type == "COLLABROOM" &&
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message.data.type == "USERINFO_UPDATE")
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{
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console.error(JSON.stringify(message));
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handleUserInfoUpdate(client, message);
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}
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else
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{
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console.error(message);
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throw "unkown Message Type: '" + message.type + "'";
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}
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}
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function handleUserInfoUpdate(client, message)
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{
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if(message.data.userInfo.name == null)
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{
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throw "USERINFO_UPDATE Message have no name!";
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}
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if(message.data.userInfo.colorId == null)
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{
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throw "USERINFO_UPDATE Message have no colorId!";
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}
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var author = sessioninfos[client.sessionId].author;
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authorManager.setAuthorColorId(author, message.data.userInfo.colorId);
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authorManager.setAuthorName(author, message.data.userInfo.name);
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}
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function handleUserChanges(client, message)
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{
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if(message.data.baseRev == null)
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{
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throw "USER_CHANGES Message have no baseRev!";
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}
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if(message.data.apool == null)
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{
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throw "USER_CHANGES Message have no apool!";
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}
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if(message.data.changeset == null)
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{
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throw "USER_CHANGES Message have no changeset!";
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}
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var baseRev = message.data.baseRev;
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var wireApool = (AttributePoolFactory.createAttributePool()).fromJsonable(message.data.apool);
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//console.error({"wireApool": wireApool});
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var changeset = message.data.changeset;
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var pad = padManager.getPad(session2pad[client.sessionId], false);
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//ex. _checkChangesetAndPool
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Changeset.checkRep(changeset);
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Changeset.eachAttribNumber(changeset, function(n) {
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if (! wireApool.getAttrib(n)) {
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throw "Attribute pool is missing attribute "+n+" for changeset "+changeset;
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}
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});
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//ex. adoptChangesetAttribs
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console.error({"changeset": changeset});
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//console.error({"before: pad.pool()": pad.pool()});
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Changeset.moveOpsToNewPool(changeset, wireApool, pad.pool());
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//console.error({"after: pad.pool()": pad.pool()});
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//ex. applyUserChanges
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var apool = pad.pool();
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var r = baseRev;
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while (r < pad.getHeadRevisionNumber()) {
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r++;
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var c = pad.getRevisionChangeset(r);
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changeset = Changeset.follow(c, changeset, false, apool);
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}
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var prevText = pad.text();
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if (Changeset.oldLen(changeset) != prevText.length) {
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throw "Can't apply USER_CHANGES "+changeset+" with oldLen "
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+ Changeset.oldLen(changeset) + " to document of length " + prevText.length;
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}
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var thisAuthor = sessioninfos[client.sessionId].author;
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pad.appendRevision(changeset, thisAuthor);
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var correctionChangeset = _correctMarkersInPad(pad.atext(), pad.pool());
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if (correctionChangeset) {
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pad.appendRevision(correctionChangeset);
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}
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if (pad.text().lastIndexOf("\n\n") != pad.text().length-2) {
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var nlChangeset = Changeset.makeSplice(
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pad.text(), pad.text().length-1, 0, "\n");
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pad.appendRevision(nlChangeset);
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}
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console.error(JSON.stringify(pad.pool()));
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//ex. updatePadClients
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//console.error({"sessioninfos[client.sessionId].author":sessioninfos[client.sessionId].author});
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for(i in pad2sessions[pad.id])
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{
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var session = pad2sessions[pad.id][i];
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//console.error({"session":session});
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var lastRev = sessioninfos[session].rev;
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while (lastRev < pad.getHeadRevisionNumber())
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{
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var r = ++lastRev;
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var author = pad.getRevisionAuthor(r);
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//console.error({"author":author});
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if(author == sessioninfos[session].author)
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{
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socketio.clients[session].send({"type":"COLLABROOM","data":{type:"ACCEPT_COMMIT", newRev:r}});
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}
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else
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{
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var forWire = Changeset.prepareForWire(pad.getRevisionChangeset(r), pad.pool());
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var wireMsg = {"type":"COLLABROOM","data":{type:"NEW_CHANGES", newRev:r,
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changeset: forWire.translated,
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apool: forWire.pool,
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author: author}};
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socketio.clients[session].send(wireMsg);
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}
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}
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sessioninfos[session].rev = pad.getHeadRevisionNumber();
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}
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//pad.getAllAuthors();
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}
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function _correctMarkersInPad(atext, apool) {
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var text = atext.text;
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// collect char positions of line markers (e.g. bullets) in new atext
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// that aren't at the start of a line
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var badMarkers = [];
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var iter = Changeset.opIterator(atext.attribs);
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var offset = 0;
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while (iter.hasNext()) {
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var op = iter.next();
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var listValue = Changeset.opAttributeValue(op, 'list', apool);
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if (listValue) {
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for(var i=0;i<op.chars;i++) {
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if (offset > 0 && text.charAt(offset-1) != '\n') {
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badMarkers.push(offset);
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}
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offset++;
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}
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}
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else {
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offset += op.chars;
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}
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}
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if (badMarkers.length == 0) {
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return null;
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}
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// create changeset that removes these bad markers
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offset = 0;
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var builder = Changeset.builder(text.length);
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badMarkers.forEach(function(pos) {
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builder.keepText(text.substring(offset, pos));
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builder.remove(1);
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offset = pos+1;
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});
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return builder.toString();
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}
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function handleClientReady(client, message)
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{
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if(!message.token)
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{
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throw "CLIENT_READY Message have no token!";
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}
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if(!message.padId)
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{
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throw "CLIENT_READY Message have no padId!";
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}
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if(!message.protocolVersion)
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{
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throw "CLIENT_READY Message have no protocolVersion!";
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}
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if(message.protocolVersion != 1)
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{
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throw "CLIENT_READY Message have a unkown protocolVersion '" + protocolVersion + "'!";
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}
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var author = authorManager.getAuthor4Token(message.token);
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/*if(token2author[message.token])
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{
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author = token2author[message.token];
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}
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else
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{
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author = "g." + _randomString(16);
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token2author[message.token] = author;
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author2token[author] = message.token;
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}*/
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var sessionId=String(client.sessionId);
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session2pad[sessionId] = message.padId;
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if(!pad2sessions[message.padId])
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{
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pad2sessions[message.padId] = [];
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}
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padManager.ensurePadExists(message.padId);
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pad2sessions[message.padId].push(sessionId);
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/*console.dir({"session2pad": session2pad});
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console.dir({"pad2sessions": pad2sessions});
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console.dir({"token2author": token2author});
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console.dir({"author2token": author2token});*/
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var pad = padManager.getPad(message.padId, false);
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atext = pad.atext();
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var attribsForWire = Changeset.prepareForWire(atext.attribs, pad.pool());
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var apool = attribsForWire.pool.toJsonable();
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atext.attribs = attribsForWire.translated;
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var clientVars = {
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//"userAgent": "Anonymous Agent",
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"accountPrivs": {
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"maxRevisions": 100
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},
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"initialRevisionList": [],
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"initialOptions": {
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"guestPolicy": "deny"
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},
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"collab_client_vars": {
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"initialAttributedText": atext,
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"clientIp": client.request.connection.remoteAddress,
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//"clientAgent": "Anonymous Agent",
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"padId": message.padId,
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"historicalAuthorData": {},
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"apool": apool,
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"rev": pad.getHeadRevisionNumber(),
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"globalPadId": message.padId
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},
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"colorPalette": ["#ffc7c7", "#fff1c7", "#e3ffc7", "#c7ffd5", "#c7ffff", "#c7d5ff", "#e3c7ff", "#ffc7f1", "#ff8f8f", "#ffe38f", "#c7ff8f", "#8fffab", "#8fffff", "#8fabff", "#c78fff", "#ff8fe3", "#d97979", "#d9c179", "#a9d979", "#79d991", "#79d9d9", "#7991d9", "#a979d9", "#d979c1", "#d9a9a9", "#d9cda9", "#c1d9a9", "#a9d9b5", "#a9d9d9", "#a9b5d9", "#c1a9d9", "#d9a9cd"],
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"clientIp": client.request.connection.remoteAddress,
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"userIsGuest": true,
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"userColor": authorManager.getAuthorColorId(author),
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"padId": message.padId,
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"initialTitle": "Pad: " + message.padId,
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"opts": {},
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"chatHistory": {
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"start": 0,
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"historicalAuthorData": {},
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"end": 0,
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"lines": []
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},
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"numConnectedUsers": pad2sessions[message.padId].length,
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"isProPad": false,
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"serverTimestamp": new Date().getTime(),
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"globalPadId": message.padId,
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"userId": author,
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"cookiePrefsToSet": {
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"fullWidth": false,
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"hideSidebar": false
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},
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"hooks": {}
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}
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if(authorManager.getAuthorName(author) != null)
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{
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clientVars.userName = authorManager.getAuthorName(author);
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}
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var allAuthors = pad.getAllAuthors();
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for(i in allAuthors)
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{
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clientVars.collab_client_vars.historicalAuthorData[allAuthors[i]] = {};
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if(authorManager.getAuthorName(author) != null)
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clientVars.collab_client_vars.historicalAuthorData[allAuthors[i]].name = authorManager.getAuthorName(author);
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clientVars.collab_client_vars.historicalAuthorData[allAuthors[i]].colorId = authorManager.getAuthorColorId(author);
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}
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client.send(clientVars);
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sessioninfos[client.sessionId].rev = pad.getHeadRevisionNumber();
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sessioninfos[client.sessionId].author = author;
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var messageToTheOtherUsers = {
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"type": "COLLABROOM",
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"data": {
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type: "USER_NEWINFO",
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userInfo: {
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"ip": "127.0.0.1",
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"colorId": authorManager.getAuthorColorId(author),
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"userAgent": "Anonymous",
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"userId": author
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}
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}
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};
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if(authorManager.getAuthorName(author) != null)
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{
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messageToTheOtherUsers.data.userInfo.name = authorManager.getAuthorName(author);
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}
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for(i in pad2sessions[message.padId])
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{
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if(pad2sessions[message.padId][i] != client.sessionId)
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{
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socketio.clients[pad2sessions[message.padId][i]].send(messageToTheOtherUsers);
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var messageToNotifyTheClientAboutTheOthers = {
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"type": "COLLABROOM",
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"data": {
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type: "USER_NEWINFO",
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userInfo: {
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"ip": "127.0.0.1",
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"colorId": authorManager.getAuthorColorId(sessioninfos[pad2sessions[message.padId][i]].author),
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"userAgent": "Anonymous",
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"userId": sessioninfos[pad2sessions[message.padId][i]].author
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}
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}
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};
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client.send(messageToNotifyTheClientAboutTheOthers);
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}
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}
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}
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/*function _randomString(len) {
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// use only numbers and lowercase letters
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var pieces = [];
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for(var i=0;i<len;i++) {
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pieces.push(Math.floor(Math.random()*36).toString(36).slice(-1));
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}
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return pieces.join('');
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}*/
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function throwExceptionIfClientOrIOisInvalid(client)
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{
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if(client == null)
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{
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throw "Client is null!";
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}
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if(socketio == null)
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{
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throw "SocketIO is not set or null! Please use setSocketIO(io) to set it";
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}
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}
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