Force.com-JavaScript-REST-Toolkit/proxy.php at master · developerforce/Force.com-JavaScript-REST-Toolkit · GitHub

This repository was archived by the owner on Jan 10, 2024. It is now read-only.

History

377 lines (330 loc) · 13.4 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

<?PHP

// Script: Simple PHP Proxy: Get external HTML, JSON and more!

// *Version: 2.0, Last updated: 4/15/2011*

// Original locations:

// Project Home - http://benalman.com/projects/php-simple-proxy/

// GitHub - http://github.com/cowboy/php-simple-proxy/

// Source - http://github.com/cowboy/php-simple-proxy/raw/master/ba-simple-proxy.php

// About: License

// Dual licensed under the MIT and GPL licenses.

// http://benalman.com/about/license/

// Modified to match semantics of Force.com Ajax Proxy as part of the

// Force.com JavaScript REST Toolkit to allow JavaScript outside the platform

// to use the Force.com REST API.

// About: Examples

// This working example, complete with fully commented code, illustrates one way

// in which this PHP script can be used.

// Simple - http://benalman.com/code/projects/php-simple-proxy/examples/simple/

// About: Release History

// 2.0 (4/15/2011) Modified to work like the Force.com Ajax Proxy so that

// JavaScript apps can access the Force.com REST API from outside the

// platform.

// 1.6 - (1/24/2009) Now defaults to JSON mode, which can now be changed to

// native mode by specifying ?mode=native. Native and JSONP modes are

// disabled by default because of possible XSS vulnerability issues, but

// are configurable in the PHP script along with a url validation regex.

// 1.5 - (12/27/2009) Initial release

// Topic: GET Parameters

// Certain GET (query string) parameters may be passed into ba-simple-proxy.php

// to control its behavior, this is a list of these parameters.

// url - The remote URL resource to fetch. Any GET parameters to be passed

// through to the remote URL resource must be urlencoded in this parameter.

// mode - If mode=native, the response will be sent using the same content

// type and headers that the remote URL resource returned. If omitted, the

// response will be JSON (or JSONP). <Native requests> and <JSONP requests>

// are disabled by default, see <Configuration Options> for more information.

// callback - If specified, the response JSON will be wrapped in this named

// function call. This parameter and <JSONP requests> are disabled by

// default, see <Configuration Options> for more information.

// user_agent - This value will be sent to the remote URL request as the

// `User-Agent:` HTTP request header. If omitted, the browser user agent

// will be passed through.

// send_cookies - If send_cookies=1, all cookies will be forwarded through to

// the remote URL request.

// send_session - If send_session=1 and send_cookies=1, the SID cookie will be

// forwarded through to the remote URL request.

// full_headers - If a JSON request and full_headers=1, the JSON response will

// contain detailed header information.

// full_status - If a JSON request and full_status=1, the JSON response will

// contain detailed cURL status information, otherwise it will just contain

// the `http_code` property.

// Topic: POST Parameters

// All POST parameters are automatically passed through to the remote URL

// request.

// Topic: JSON requests

// This request will return the contents of the specified url in JSON format.

// Request:

// > ba-simple-proxy.php?url=http://example.com/

// Response:

// > { "contents": "<html>...</html>", "headers": {...}, "status": {...} }

// JSON object properties:

// contents - (String) The contents of the remote URL resource.

// headers - (Object) A hash of HTTP headers returned by the remote URL

// resource.

// status - (Object) A hash of status codes returned by cURL.

// Topic: JSONP requests

// This request will return the contents of the specified url in JSONP format

// (but only if $enable_jsonp is enabled in the PHP script).

// Request:

// > ba-simple-proxy.php?url=http://example.com/&callback=foo

// Response:

// > foo({ "contents": "<html>...</html>", "headers": {...}, "status": {...} })

// JSON object properties:

// contents - (String) The contents of the remote URL resource.

// headers - (Object) A hash of HTTP headers returned by the remote URL

// resource.

// status - (Object) A hash of status codes returned by cURL.

// Topic: Native requests

// This request will return the contents of the specified url in the format it

// was received in, including the same content-type and other headers (but only

// if $enable_native is enabled in the PHP script).

// Request:

// > ba-simple-proxy.php?url=http://example.com/&mode=native

// Response:

// > <html>...</html>

// Topic: Notes

// * Assumes magic_quotes_gpc = Off in php.ini

// Topic: Configuration Options

// These variables can be manually edited in the PHP file if necessary.

// $enable_jsonp - Only enable <JSONP requests> if you really need to. If you

// install this script on the same server as the page you're calling it

// from, plain JSON will work. Defaults to false.

// $enable_native - You can enable <Native requests>, but you should only do

// this if you also whitelist specific URLs using $valid_url_regex, to avoid

// possible XSS vulnerabilities. Defaults to false.

// Force.com JavaScript REST Toolkit sets this to true, since it needs

// native mode, and sets $valid_url_regex appropriately.

// $valid_url_regex - This regex is matched against the url parameter to

// ensure that it is valid. This setting only needs to be used if either

// $enable_jsonp or $enable_native are enabled. Defaults to '/.*/' which

// validates all URLs.

// Force.com JavaScript REST Toolkit sets this to

// '/https:\/\/.*salesforce.com/' to constrain URLs to end with

// salesforce.com

// $url_query_param - set this to the name of the query string parameter in

// which to pass the target URL, or null if you want to pass the URL as a

// header.

// $url_header - set this to the name of the HTTP header in which to pass

// the target URL, or null if you want to pass the URL as a query string

// parameter.

// Force.com JavaScript REST Toolkit sets this to

// 'HTTP_SALESFORCEPROXY_ENDPOINT' to match the Ajax proxy.

// $authz_header - HTTP header in which authorization data is passed. This

// will be used for the outgoing Authorization header.

// Force.com JavaScript REST Toolkit sets this to 'AUTHORIZATION'

// $cors_allow_origin - origins to allow for Cross Origin Resource Sharing.

// Set this to match the location of the JavaScript - e.g.

// 'https://www.myserver.com/'

// $cors_allow_methods - HTTP methods to allow for CORS - you shouldn't need

// to change this.

// $cors_allow_headers - HTTP headers to allow for CORS - you might need to

// change Authorization if you pass auth data in another header.

// ############################################################################

// Change these configuration options if needed, see above descriptions for info.

$enable_jsonp = false;

$enable_native = true;

$valid_forcecom_url_regex = '/https:\/\/.*\.(salesforce|database|cloudforce)\.com/';

$url_query_param = null; // 'url'

$url_header = 'HTTP_SALESFORCEPROXY_ENDPOINT';

$authz_header = 'HTTP_X_AUTHORIZATION';

$return_all_headers = true;

$cors_allow_origin = null;

$cors_allow_methods = 'GET, POST, PUT, PATCH, DELETE, HEAD';

$cors_allow_headers = 'Authorization, Content-Type';

// ############################################################################

$status = array();

if ( $url_query_param != null ) {

$url = isset($_GET[$url_query_param]) ? $_GET[$url_query_param] : null;

} else if ( $url_header != null ) {

$url = isset($_SERVER[$url_header]) ? $_SERVER[$url_header] : null;

} else {

$url = null;

}

if ( !$url ) {

// Passed url not specified.

$contents = 'ERROR: url not specified';

$status['http_code'] = 400;

$status['status_text'] = 'Bad Request';

} else if ( !preg_match( $valid_forcecom_url_regex, $url )) {

// Passed url doesn't match $valid_url_regex.

$contents = 'ERROR: invalid url';

$status['http_code'] = 400;

$status['status_text'] = 'Bad Request';

} else {

if ( isset( $cors_allow_origin ) ) {

header( 'Access-Control-Allow-Origin: '.$cors_allow_origin );

if ( isset( $cors_allow_methods ) ) {

header( 'Access-Control-Allow-Methods: '.$cors_allow_methods );

}

if ( isset( $cors_allow_headers ) ) {

header( 'Access-Control-Allow-Headers: '.strtolower($cors_allow_headers) );

}

if ( isset($_SERVER['REQUEST_METHOD']) &&

($_SERVER['REQUEST_METHOD'] == 'OPTIONS') ) {

// We're done - don't proxy CORS OPTIONS request

exit();

}

$ch = curl_init( $url );

// Pass on request method, regardless of what it is

curl_setopt( $ch, CURLOPT_CUSTOMREQUEST,

isset($_SERVER['REQUEST_METHOD']) ? $_SERVER['REQUEST_METHOD'] : 'GET' );

// Pass on content, regardless of request method

if ( (isset($_SERVER['CONTENT_LENGTH'] ) && $_SERVER['CONTENT_LENGTH'] > 0) ||

(isset($_SERVER['HTTP_CONTENT_LENGTH'] ) && $_SERVER['HTTP_CONTENT_LENGTH'] > 0) ) {

curl_setopt( $ch, CURLOPT_POSTFIELDS, file_get_contents("php://input") );

}

if ( isset($_GET['send_cookies']) ) {

$cookie = array();

foreach ( $_COOKIE as $key => $value ) {

$cookie[] = $key . '=' . $value;

}

if ( isset($_GET['send_session']) ) {

$cookie[] = SID;

}

$cookie = implode( '; ', $cookie );

curl_setopt( $ch, CURLOPT_COOKIE, $cookie );

}

$headers = array();

if ( isset($authz_header) && isset($_SERVER[$authz_header]) ) {

// Set the Authorization header

array_push($headers, "Authorization: ".$_SERVER[$authz_header] );

}

if ( isset($_SERVER['CONTENT_TYPE']) ) {

// Pass through the Content-Type header

array_push($headers, "Content-Type: ".$_SERVER['CONTENT_TYPE'] );

} elseif ( isset($_SERVER['HTTP_CONTENT_TYPE']) ) {

// Pass through the Content-Type header

array_push($headers, "Content-Type: ".$_SERVER['HTTP_CONTENT_TYPE'] );

}

if ( isset($_SERVER['HTTP_SOAPACTION']) ) {

// Pass through the SOAPAction header

array_push($headers, "SOAPAction: ".$_SERVER['HTTP_SOAPACTION'] );

}

if ( isset($_SERVER['HTTP_X_USER_AGENT']) ) {

// Pass through the X-User-Agent header

array_push($headers, "X-User-Agent: ".$_SERVER['HTTP_X_USER_AGENT'] );

}

if ( isset($_SERVER['HTTP_X_FORWARDED_FOR']) ) {

array_push($headers, $_SERVER['HTTP_X_FORWARDED_FOR'].", ".$_SERVER['HTTP_X_USER_AGENT'] );

} else if (isset($_SERVER['REMOTE_ADDR'])) {

array_push($headers, "X-Forwarded-For: ".$_SERVER['REMOTE_ADDR'] );

}

if ( count($headers) > 0 ) {

curl_setopt( $ch, CURLOPT_HTTPHEADER, $headers );

}

curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, true );

curl_setopt( $ch, CURLOPT_HEADER, true );

curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );

curl_setopt( $ch, CURLOPT_USERAGENT,

isset($_GET['user_agent']) ? $_GET['user_agent'] : $_SERVER['HTTP_USER_AGENT'] );

list( $header, $contents ) = preg_split( '/([\r\n][\r\n])\\1/', curl_exec( $ch ), 2 );

$status = curl_getinfo( $ch );

if ( curl_errno( $ch ) ) {

$status['http_code'] = 500;

$contents = "cURL error ".curl_errno( $ch ).": ".curl_error( $ch )."\n";

}

curl_close( $ch );

}

// Split header text into an array.

$header_text = isset($header) ? preg_split( '/[\r\n]+/', $header ) : array();

if ( isset($_GET['mode']) && $_GET['mode'] == 'native' ) {

if ( !$enable_native ) {

$contents = 'ERROR: invalid mode';

$status['http_code'] = 400;

$status['status_text'] = 'Bad Request';

}

if ( isset( $status['http_code'] ) ) {

$header = "HTTP/1.1 ".$status['http_code'];

if (isset($status['status_text'])) {

$header .= " ".$status['status_text'];

}

header( $header );

$header_match = '/^(?:Content-Type|Content-Language|Set-Cookie)/i';

} else {

$header_match = '/^(?:HTTP|Content-Type|Content-Language|Set-Cookie)/i';

}

foreach ( $header_text as $header ) {

if ( preg_match( $header_match, $header ) ) {

header( $header );

}

print $contents;

} else {

// $data will be serialized into JSON data.

$data = array();

// Propagate all HTTP headers into the JSON data object.

if ( isset($_GET['full_headers']) ) {

$data['headers'] = array();

foreach ( $header_text as $header ) {

preg_match( '/^(.+?):\s+(.*)$/', $header, $matches );

if ( $matches ) {

$data['headers'][ $matches[1] ] = $matches[2];

}

// Propagate all cURL request / response info to the JSON data object.

if ( isset($_GET['full_status']) ) {

$data['status'] = $status;

} else {

$data['status'] = array();

$data['status']['http_code'] = $status['http_code'];

}

// Set the JSON data object contents, decoding it from JSON if possible.

$decoded_json = json_decode( $contents );

$data['contents'] = $decoded_json ? $decoded_json : $contents;

// Generate appropriate content-type header.

$is_xhr = isset($_SERVER['HTTP_X_REQUESTED_WITH']) &&

(strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest');

header( 'Content-type: application/' . ( $is_xhr ? 'json' : 'x-javascript' ) );

// Get JSONP callback.

$jsonp_callback = ($enable_jsonp && isset($_GET['callback'])) ? $_GET['callback'] : null;

// Generate JSON/JSONP string

$json = json_encode( $data );

print $jsonp_callback ? "$jsonp_callback($json)" : $json;

}

Force.com-JavaScript-REST-Toolkit/proxy.php at master · developerforce/Force.com-JavaScript-REST-Toolkit · GitHub

Uh oh!

Expand file tree

Breadcrumbs

proxy.php

Latest commit

History

Breadcrumbs

proxy.php

File metadata and controls