edp-webserver
Version:
Package for edp webserver.
215 lines (172 loc) • 6.34 kB
JavaScript
/***************************************************************************
*
* Copyright (c) 2014 Baidu.com, Inc. All Rights Reserved
* $Id$
*
**************************************************************************/
/**
* php.handler.js ~ 2014/02/28 12:07:51
* @author leeight(liyubei@baidu.com)
* @version $Revision$
* @description
*
**/
var edp = require( 'edp-core' );
/* jshint camelcase: false */
/**
* edp-webserver处理php
*
* 在`edp-webserver-config.js`中配置：
* ```javascript
* {
* location: /^.*$/,
* handler: [
* // 或者直接将php-cgi添加到环境变量中
* php('/usr/local/php/bin/php-cgi')
* ]
* }
* ```
* 调试状态下请打开`php.ini`的`error_reporting`。
*
* @param {string=} opt_handler php-cgi可执行文件路径
* @param {string=} opt_suffix 后缀名.
* @param {function(Object):string=} opt_forwardPathName url转化的函数.
*/
module.exports = exports = function(opt_handler, opt_suffix, opt_forwardPathName) {
var handler = opt_handler || 'php-cgi';
// var suffix = opt_suffix || 'php';
return function(context) {
var request = context.request;
var targetURL = request.url;
var targetPathName = request.pathname;
var targetSearch = request.search;
// url改换
if ( opt_forwardPathName ) {
var changed = opt_forwardPathName(context);
if (changed) {
targetPathName = changed.pathname || targetPathName;
targetSearch = changed.search || targetSearch;
targetURL = request.headers.host + targetPathName + targetSearch;
edp.log.info(
'PHP try forwarding request' + (request.url)
+ ' to ' + (targetURL)
);
}
}
if (!/\.php($|\?)/.test(targetURL)) {
return;
}
// 挂起
context.stop();
edp.log.info(
'PHP request:' + (targetURL) + ' | ' + (targetPathName)
);
var path = require('path');
var docRoot = context.conf.documentRoot;
var request = context.request;
var scriptName = targetPathName;
var scriptFileName = path.normalize(
docRoot + targetPathName
);
var query = null;
if (targetSearch) {
query = require('url').parse(targetSearch).query;
}
// @see: http://www.cgi101.com/book/ch3/text.html
var host = (request.headers.host || '').split(':');
var env = {
PATH: process.env.PATH,
GATEWAY_INTERFACE: 'CGI/1.1',
SERVER_PROTOCOL: 'HTTP/1.1',
SERVER_ROOT: docRoot,
DOCUMENT_ROOT: docRoot,
SERVER_NAME: host[0],
SERVER_PORT: host[1] || 80,
REDIRECT_STATUS: 200,
SCRIPT_NAME: scriptName, //docroot上的文件
REQUEST_URI: targetURL,
SCRIPT_FILENAME: scriptFileName, //物理文件
REQUEST_METHOD: request.method,
QUERY_STRING: query || '',
TRANSFER_ENCODING: 'Chunked'
};
// expose request headers
for (var header in request.headers) {
var name = 'HTTP_' + header.toUpperCase().replace(/-/g, '_');
env[name] = request.headers[header];
}
// if ('content-length' in request.headers || request.method === 'POST' || request.method === 'PUT') {
// env.CONTENT_LENGTH = getContentLength(request);
// console.log(env.CONTENT_LENGTH);
// }
if ('content-type' in request.headers) {
env.CONTENT_TYPE = request.headers['content-type'];
}
var child = require('child_process').spawn(
handler,
[],
{ env: env }
);
var bodyBuffer = [];
var isBodyData = false;
var headers = {};
var line = [];
child.on( 'exit', done );
child.on('error', function () {
edp.log.error('php error [' + [].slice.call(arguments) + ']');
});
child.stderr
.on( 'end', function (chunk) {
chunk && edp.log.error('php error:\n' + chunk.toString('utf8') + '\n');
})
.on( 'data', function (chunk) {
chunk && edp.log.error('php error:\n' + chunk.toString('utf8') + '\n');
});
child.stdout
.on( 'end', done )
.on( 'data', function( buf ) {
for (var i = 0; i < buf.length; i++) {
// 如果是主体数据内容
if (isBodyData) {
return bodyBuffer.push(buf);
}
// 取出header
var c = buf[i];
if (c == 0xA) { // 如果是\n，则一行读取完毕
if (!line.length) { // 如果读取到一个空行
isBodyData = true;
bodyBuffer.push( buf.slice(i + 1) );
return;
}
var s = line.join('');
line = [];
var idx = s.indexOf(':');
headers[s.slice(0, idx)] = s.slice(idx + 1).trim();
} else if (c != 0xD) { //如果不是\n，也不是\r，说明一行还未读取结束
line.push(String.fromCharCode(c));
}
}
}
);
// 将php解析后的结果填充到context中
function done( code ) {
if (code === undefined) {
return;
}
for(var i in headers) {
if (headers.hasOwnProperty(i)) {
context.header[i.toLowerCase()] = headers[i];
}
}
context.content = bodyBuffer.join('');
// 如果code非零，也不一定不能运行
// if (code) {
// context.status = 500;
// }
// 标志php成功返回
context.phpOK = true;
context.start();
}
};
};
/* vim: set ts=4 sw=4 sts=4 tw=100: */