k2hr3-api
Version:
K2HR3 REST API is K2hdkc based Resource and Roles and policy Rules
219 lines (192 loc) • 7.05 kB
JavaScript
/*
* K2HR3 REST API
*
* Copyright 2018 Yahoo Japan Corporation.
*
* K2HR3 is K2hdkc based Resource and Roles and policy Rules, gathers
* common management information for the cloud.
* K2HR3 can dynamically manage information as "who", "what", "operate".
* These are stored as roles, resources, policies in K2hdkc, and the
* client system can dynamically read and modify these information.
*
* For the full copyright and license information, please view
* the license file that was distributed with this source code.
*
* AUTHOR: Takeshi Nakatani
* CREATE: Tue Oct 2 2018
* REVISION:
*
*/
;
var express = require('express');
var router = express.Router();
var apiutil = require('../lib/k2hr3apiutil');
var resutil = require('../lib/k2hr3resutil');
var r3userdata = require('../lib/k2hr3userdata');
// Debug logging objects
var r3logger = require('../lib/dbglogging');
//---------------------------------------------------------
// Router GET
//---------------------------------------------------------
//
// Mountpath : '/v1/userdata/*'
//
// GET '/v1/userdata/<encrypted data>' : get userdata for openstack on version 1
// response : compressed(gzip) userdata(binary) for openstack
//
// This mount point is for getting compressed userdata of openstack which is
// used at creating instance.
// The response data is compressed by gzip, and it included multipart userdata.
// The userdata probably has "cloud-config" and "script" for registering ip
// address to k2hr3 role as its member.
// The url last path part is url encoded string which is base64 and encrypted
// role-token and role name. This userdata script will register ip address.
//
router.get('/', function(req, res, next)
{
r3logger.dlog('CALL:', req.method, req.url);
if('GET' !== req.method){
// HEAD request comes here, so it should be routed to head(not defined) function.
next();
return;
}
var result;
if( !apiutil.isSafeEntity(req) ||
!apiutil.isSafeEntity(req.baseUrl) ||
!apiutil.isSafeEntity(req.headers) ) // Must User-Agent in header
{
result = {
result: false,
message: 'GET request or url is wrong'
};
r3logger.elog(result.message);
res.type('application/json; charset=utf-8');
resutil.errResponse(req, res, 400, result); // 400: Bad Request
return;
}
//------------------------------
// Check headers
//------------------------------
var isGzip = false;
if(!apiutil.isSafeEntity(req.headers['user-agent'])){
// 'User-Agent' Must have 'Cloud-Init'
r3logger.elog('GET request does not have User-Agent header');
result = {
result: false,
message: 'GET request does not have User-Agent header'
};
r3logger.elog(result.message);
res.type('application/json; charset=utf-8');
resutil.errResponse(req, res, 400, result); // 400: Bad Request
return;
}else{
var strtmp = req.headers['user-agent'].toLowerCase();
if(-1 == strtmp.indexOf('cloud-init')){
// 'User-Agent' Must have 'Cloud-Init'
r3logger.elog('GET request User-Agent does not have Cloud-Init');
result = {
result: false,
message: 'GET request is not allowed from your client'
};
r3logger.elog(result.message);
res.type('application/json; charset=utf-8');
resutil.errResponse(req, res, 400, result); // 400: Bad Request
return;
}
// Check version
var ciptn = new RegExp('cloud-init/([0-9]+).([0-9]+).([0-9]+)'); // regex = /Cloud-Init\/([0-9]+)\.([0-9]+)\.([0-9]+)/
var cimatchs= decodeURI(strtmp).match(ciptn);
if( !apiutil.isEmptyArray(cimatchs) &&
3 < cimatchs.length &&
( 0 < Number(cimatchs[1]) ||
7 < Number(cimatchs[2]) ||
9 <= Number(cimatchs[3]) )
){
// [FORCE]
// Cloud-Init is 0.7.9 or after it, this version supports gzip compressed
// userdata. Thus we return gzip compressed userdata.
r3logger.dlog('Cloud-Init version is over 0.7.9, thus we force return gzip compressed userdata');
isGzip = true;
}
}
if(apiutil.isSafeEntity(req.headers['content-type'])){
if(!apiutil.hasPartString(req.headers['content-type'], ';', 'application/octet-stream', true)){
// should be 'application/octet-stream', but all type is allowed
r3logger.dlog('GET request Content-Type is not application/octet-stream, but continue...');
}
}else{
//r3logger.dlog('GET request doe not have Content-Type, but continue...');
}
if(apiutil.isSafeEntity(req.headers['accept-encoding'])){
if(apiutil.hasPartString(req.headers['accept-encoding'], ',', ['gzip', 'deflate'], true)){
isGzip = true;
}else if(!isGzip){
// Accept-Encoding should have 'gzip' or 'deflate', but all type is allowed
r3logger.dlog('Get request Accept-Encoding does not have gzip nor deflate, but continue...');
}
}else{
//r3logger.dlog('GET request doe not have Accept-Encoding, but continue...');
}
//------------------------------
// get url last path and decode it
//------------------------------
// check path matching
var requestptn = new RegExp('^/v1/userdata/(.*)'); // regex = /^\/v1\/userdata\/(.*)/
var reqmatchs = decodeURI(req.baseUrl).match(requestptn);
if(apiutil.isEmptyArray(reqmatchs) || reqmatchs.length < 2 || '' === apiutil.getSafeString(reqmatchs[1])){
result = {
result: false,
message: 'GET request url does not have userdata path parameter'
};
r3logger.elog(result.message);
res.type('application/json; charset=utf-8');
resutil.errResponse(req, res, 400, result); // 400: Bad Request
return;
}
// decode and check userdata parameter
var udproc = new r3userdata.userdataProcess;
var roleinfo = udproc.decryptRoleInfo(reqmatchs[1]);
var errorMsg = null;
if(!apiutil.isSafeEntity(roleinfo)){
// [NOTE]
// continue for returning error script
//
errorMsg = 'Get userdata path is invalid.';
r3logger.elog(errorMsg);
}
//------------------------------
// Make response
//------------------------------
var responsebody = null;
if(isGzip){
// Gzip
responsebody = udproc.getGzipMultipartUserdata(roleinfo, errorMsg);
res.type('application/zip');
res.setHeader('Content-Encoding', 'gzip');
res.setHeader('Content-Transfer-Encoding', 'binary');
res.setHeader('Content-Disposition', 'attachment; filename=k2hr3-userdata.gz');
res.setHeader('Content-Length', responsebody.length);
r3logger.dlog('succeed : (response body is gzip compressed)');
res.status(200); // 200: OK
res.send(responsebody.data);
}else{
// Text
var multiobj = udproc.getMultipartUserdata(roleinfo, errorMsg);
responsebody = multiobj.body;
res.type(multiobj.type);
res.setHeader(multiobj.mimeverkey, multiobj.mimeverval);
res.setHeader(multiobj.partcntkey, multiobj.partcntval);
r3logger.dlog('succeed : (response body is not gzip compressed)');
res.status(200); // 200: OK
res.send(responsebody);
}
});
module.exports = router;
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noexpandtab sw=4 ts=4 fdm=marker
* vim<600: noexpandtab sw=4 ts=4
*/