143 lines
4.1 KiB
JavaScript
143 lines
4.1 KiB
JavaScript
/**
|
|
* The API Handler handles all API http requests
|
|
*/
|
|
|
|
/*
|
|
* 2011 Peter 'Pita' Martischka
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS-IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
var fs = require("fs");
|
|
var api = require("../db/API");
|
|
|
|
//ensure we have an apikey
|
|
var apikey = null;
|
|
try
|
|
{
|
|
apikey = fs.readFileSync("../APIKEY.txt","utf8");
|
|
}
|
|
catch(e)
|
|
{
|
|
apikey = randomString(32);
|
|
fs.writeFileSync("../APIKEY.txt",apikey,"utf8");
|
|
}
|
|
|
|
//a list of all functions
|
|
var functions = {
|
|
"createGroup" : [],
|
|
"getMappedGroup4" : ["groupMapper"],
|
|
// "deleteGroup" : ["groupID"],
|
|
"listPads" : ["groupID"],
|
|
"createPad" : ["padID", "text"],
|
|
"createGroupPad" : ["groupID", "padName", "text"],
|
|
// "createAuthor" : ["name"],
|
|
// "getMappedAuthor4" : ["authorMapper" , "name"],
|
|
// "createSession" : ["groupID", "authorID", "validUntil"],
|
|
// "deleteSession" : ["sessionID"],
|
|
// "getSessionInfo" : ["sessionID"],
|
|
// "listSessionsOfGroup" : ["groupID"],
|
|
// "listSessionsOfAuthor" : ["authorID"],
|
|
// "deleteAllSessionsOfGroup" : ["groupID"],
|
|
// "deleteAllSessionsOfAuthor" : ["authorID"],
|
|
"getText" : ["padID", "rev"],
|
|
"setText" : ["padID", "text"],
|
|
"getRevisionsCount" : ["padID"],
|
|
// "deletePad" : ["padID"],
|
|
"getReadOnlyID" : ["padID"]
|
|
// "setPublicStatus" : ["padID", "publicStatus"],
|
|
// "getPublicStatus" : ["padID"],
|
|
// "setPassword" : ["padID", "password"],
|
|
// "isPasswordProtected" : ["padID"]
|
|
};
|
|
|
|
/**
|
|
* Handles a HTTP API call
|
|
* @param functionName the name of the called function
|
|
* @param fields the params of the called function
|
|
* @req express request object
|
|
* @res express response object
|
|
*/
|
|
exports.handle = function(functionName, fields, req, res)
|
|
{
|
|
//check the api key!
|
|
if(fields["apikey"] != apikey)
|
|
{
|
|
res.send({code: 4, message: "no or wrong API Key", data: null});
|
|
return;
|
|
}
|
|
|
|
//check if this is a valid function name
|
|
var isKnownFunctionname = false;
|
|
for(var knownFunctionname in functions)
|
|
{
|
|
if(knownFunctionname == functionName)
|
|
{
|
|
isKnownFunctionname = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
//say goodbye if this is a unkown function
|
|
if(!isKnownFunctionname)
|
|
{
|
|
res.send({code: 3, message: "no such function", data: null});
|
|
return;
|
|
}
|
|
|
|
//put the function parameters in an array
|
|
var functionParams = [];
|
|
for(var i=0;i<functions[functionName].length;i++)
|
|
{
|
|
functionParams.push(fields[functions[functionName][i]]);
|
|
}
|
|
|
|
//add a callback function to handle the response
|
|
functionParams.push(function(err, data)
|
|
{
|
|
// no error happend, everything is fine
|
|
if(err == null)
|
|
{
|
|
if(!data)
|
|
data = null;
|
|
|
|
res.send({code: 0, message: "ok", data: data});
|
|
}
|
|
// parameters were wrong and the api stopped execution, pass the error
|
|
else if(err.stop)
|
|
{
|
|
res.send({code: 1, message: err.stop, data: null});
|
|
}
|
|
//an unkown error happend
|
|
else
|
|
{
|
|
res.send({code: 2, message: "internal error", data: null});
|
|
throw (err);
|
|
}
|
|
});
|
|
|
|
//call the api function
|
|
api[functionName](functionParams[0],functionParams[1],functionParams[2],functionParams[3],functionParams[4]);
|
|
}
|
|
|
|
/**
|
|
* Generates a random String with the given length. Is needed to generate the Author Ids
|
|
*/
|
|
function randomString(len) {
|
|
// use only numbers and lowercase letters
|
|
var pieces = [];
|
|
for(var i=0;i<len;i++) {
|
|
pieces.push(Math.floor(Math.random()*36).toString(36).slice(-1));
|
|
}
|
|
return pieces.join('');
|
|
}
|