cloudcmd/lib/server/rest.js
2014-02-11 09:22:37 -05:00

497 lines
16 KiB
JavaScript

/* RESTful module */
(function() {
'use strict';
if (!global.cloudcmd)
return console.log(
'# rest.js' + '\n' +
'# -----------' + '\n' +
'# Module is part of Cloud Commander,' + '\n' +
'# used for work with REST API.' + '\n' +
'# If you wont to see at work set rest: true' + '\n' +
'# and apiURL in config.json' + '\n' +
'# http://cloudcmd.io' + '\n');
var main = global.cloudcmd.main,
fs = main.fs,
path = main.path,
Hash = main.hash,
crypto = main.crypto,
Util = main.util,
pipe = main.pipe,
CloudFunc = main.cloudfunc,
dir = main.dir,
diff = main.diff,
time = main.time,
JSONDIR = main.JSONDIR,
OK = 200,
sendError = main.sendError,
sendResponse= main.sendResponse,
Header = main.generateHeaders({
name:'api.json'
}),
fse = main.require('fs-extra') || {
remove: fs.rmdir.bind(fs),
mkdirs: fs.mkdir.bind(fs)
};
/**
* rest interface
* @pParams {request, responce}
*/
exports.api = function(request, response, callback) {
var apiURL, name, ret;
if (request && response) {
apiURL = main.config.apiURL;
name = main.getPathName(request);
ret = Util.isContainStr(name, apiURL);
if (ret) {
name = Util.removeStrOneTime(name, apiURL) || '/';
sendData({
request : request,
response : response,
name : name
});
}
}
if (!ret)
Util.exec(callback);
return ret;
};
/**
* send data
*
* @param pRes
* @param pData
*/
function send(pParams) {
var lRes = pParams.response,
lData = pParams.data;
lRes.writeHead(OK, Header);
lRes.end( Util.stringifyJSON(lData) );
}
/**
* getting data on method and command
*
* @param pParams {command, method, body, requrest, response}
*/
function sendData(pParams) {
var p, ret = main.checkParams(pParams);
if (ret) {
p = pParams;
ret = Util.isContainStrAtBegin(p.name, CloudFunc.FS);
if (ret)
onFS(pParams);
else {
if (p.name[0] === '/')
p.command = Util.removeStrOneTime(p.name, '/');
switch(p.request.method) {
case 'GET':
ret = onGET(pParams);
break;
case 'PUT':
getBody(p.request, function(pBody) {
p.body = pBody;
onPUT(p);
});
break;
}
}
}
return ret;
}
function onFS(params) {
var p, lQuery, isGet,
ret = main.checkParams(params);
if (ret) {
p = params;
lQuery = main.getQuery(p.request);
p.name = Util.removeStrOneTime(p.name, CloudFunc.FS) || '/';
switch (p.request.method) {
case 'GET':
isGet = onFSGet(lQuery, p.name, function(error, result) {
checkSendError(error, params, function() {
sendResponse(p, result);
});
});
if (!isGet)
fs.stat(p.name, function(error, stat) {
var getDirContent = main.commander.getDirContent;
if (error)
Util.exec(error);
else
if (!stat.isDirectory())
main.sendFile(p);
else
getDirContent(p.name, function(pError, pData) {
checkSendError(pError, p, function() {
p.name += '.json';
p.data = Util.stringifyJSON(pData);
sendResponse(p);
});
});
});
break;
case 'PUT':
if (lQuery === 'dir')
fse.mkdirs(p.name, function(pError) {
checkSendError(pError, params, function() {
sendMsg(params, 'make dir', p.name);
});
});
else if (lQuery === 'patch')
getBody(p.request, function(pPatch) {
fs.readFile(p.name, Util.call(read, params));
function read(params) {
var lDiff, lStr, p, lData, lName,
ret = main.checkCallBackParams(params) &&
main.checkParams(params.params);
if (ret) {
p = params;
lName = p.params.name;
checkSendError(p.error, p.params, function() {
lStr = p.data.toString();
ret = Util.tryCatchLog(function() {
lDiff = diff.applyPatch(lStr, pPatch);
});
if (lDiff && !ret)
fs.writeFile(lName, lDiff, Util.call(write, p.params));
else {
lName = path.basename(lName);
sendMsg(p.params, 'patch', lName, 'fail');
}
});
}
}
function write(params) {
var p, lName,
ret = main.checkCallBackParams(params) &&
main.checkParams(params.params);
if (ret) {
p = params;
checkSendError(p.error, p.params, function() {
lName = path.basename(p.params.name);
sendMsg(p.params, 'patch', lName);
});
}
}
});
else
pipe.create({
read : p.request,
to : p.name,
callback : function(pError) {
checkSendError(pError, params, function() {
var lName = path.basename(p.name);
sendMsg(params, 'save', lName);
});
}
});
break;
case 'DELETE':
onDelete(params, lQuery, function(error, msg, callback) {
checkSendError(error, params, function() {
if (callback)
Util.exec(callback);
else
sendMsg(params, 'delete', msg);
});
});
break;
}
}
return ret;
}
function onDelete(params, query, callback) {
var rmFile = fs.unlink.bind(fs),
rmDir = fse.remove.bind(fse),
p = params;
if (query === 'dir')
rmDir(p.name, function(error) {
Util.exec(callback, error, p.name);
});
else if (query === 'files')
getBody(p.request, function(body) {
var i, name,
files = Util.parseJSON(body),
n = files.length,
dir = p.name,
log = Util.log.bind(Util),
assync = 0;
function onStat(name, error, stat) {
++assync;
if (error)
Util.exec(callback, error);
else {
if (stat.isDirectory())
rmDir(name, log);
else if (stat.isFile())
rmFile(name, log);
if (assync === n)
Util.exec(callback, null, body);
}
}
for (i = 0; i < n; i ++) {
name = dir + files[i];
Util.log(name);
fs.stat(name, onStat.bind(null, name));
}
});
else
rmFile(p.name, function(error) {
Util.exec(callback, error, p.name);
});
}
function onFSGet(query, name, callback) {
var msg, hash, ret = true;
switch (query) {
case 'size':
dir.getSize(name, function(error, size) {
if (!error)
size = CloudFunc.getShortSize(size);
Util.exec(callback, error, size);
});
break;
case 'time':
time.get(name, function(error, time) {
var timeStr = time.toString();
Util.exec(callback, error, timeStr);
});
break;
case 'hash':
hash = Hash.create();
if (!hash) {
msg = 'not suported, try update node';
msg = CloudFunc.formatMsg('hash', msg, 'error');
Util.exec(callback, msg);
} else
pipe.create({
from : name,
write : hash,
callback : function (error) {
var hex = hash.get();
Util.exec(callback, error, hex);
}
});
break;
default:
ret = false;
break;
}
return ret;
}
/**
* process data on GET request
*
* @param pParams {command, method, body, requrest, response}
*/
function onGET(pParams) {
var ret = main.checkParams(pParams);
if (ret) {
var p = pParams,
lCmd = p.command;
switch(lCmd) {
case '':
p.data = {
info: 'Cloud Commander API v1'
};
send(p);
break;
default:
p.data = {
error: 'command not found'
};
send(p);
break;
}
}
return ret;
}
/**
* process data on PUT request
*
* @param pParams {command, method, body, requrest, response}
*/
function onPUT(pParams) {
var name, data, json, config, callback,
ret = main.checkParams(pParams, ['body']);
if (ret) {
var p = pParams,
lCmd = p.command,
lFiles = Util.parseJSON(p.body);
switch(lCmd) {
case 'auth':
main.auth(p.body, function(pTocken) {
send({
response: p.response,
data: pTocken
});
});
break;
case 'mv':
if (!Util.checkObjTrue(lFiles, ['from', 'to']) )
sendError(pParams, p.data);
else
fs.rename(lFiles.from, lFiles.to, function(pError) {
checkSendError(pError, pParams, function() {
sendResponse(pParams);
});
});
break;
case 'cp':
callback = function(error) {
checkSendError(error, pParams, function() {
sendMsg(pParams, 'copy', lFiles.to);
});
};
if (!Util.checkObjTrue(lFiles, ['from', 'to']))
sendError(pParams, p.data);
else if (fse)
fse.copy(lFiles.from, lFiles.to, callback);
else
pipe.create({
from : lFiles.from,
to : lFiles.to,
callback : callback
});
break;
case 'zip':
if (!Util.checkObjTrue(lFiles, ['from']))
sendError(pParams, p.data);
else
pipe.create({
from : lFiles.from,
to : lFiles.to || lFiles.from + '.zip',
gzip : true,
callback : function(pError) {
checkSendError(pError, pParams, function() {
var lName = path.basename(lFiles.from);
sendMsg(pParams, 'zip', lName);
});
}
});
break;
case 'config':
var hash,
passwd = lFiles.password,
sha = crypto.createHash('sha1');
config = main.config;
if (passwd) {
sha.update(passwd);
passwd = sha.digest('hex');
lFiles.password = passwd;
}
for (name in lFiles)
config[name] = lFiles[name];
json = Util.stringifyJSON(config) + '\n';
fs.writeFile(JSONDIR + 'config.json', json, function(error) {
checkSendError(error, pParams, function() {
sendMsg(pParams, 'config', name);
});
});
break;
default:
send(pParams);
break;
}
}
return ret;
}
/**
* get body of url query
*
* @param pReq
* @param pCallBack
*/
function getBody(req, pCallBack) {
var lBody = '';
req.on('data', function(chunk) {
lBody += chunk.toString();
});
req.on('end', function() {
Util.exec(pCallBack, lBody);
});
}
function sendMsg(pParams, pMsg, pName, pStatus) {
var msg = CloudFunc.formatMsg(pMsg, pName, pStatus);
sendResponse(pParams, msg);
}
function checkSendError(error, params, callback) {
if (error)
sendError(params, error);
else
Util.exec(callback);
}
})();