poco/Net/src/HTMLForm.cpp at develop · cppfool/poco · GitHub

History

442 lines (373 loc) · 8.86 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

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

// HTMLForm.cpp

// $Id: //poco/1.4/Net/src/HTMLForm.cpp#4 $

// Library: Net

// Package: HTML

// Module: HTMLForm

// and Contributors.

// SPDX-License-Identifier: BSL-1.0

#include "Poco/Net/HTMLForm.h"

#include "Poco/Net/HTTPRequest.h"

#include "Poco/Net/PartSource.h"

#include "Poco/Net/PartHandler.h"

#include "Poco/Net/MultipartWriter.h"

#include "Poco/Net/MultipartReader.h"

#include "Poco/Net/NullPartHandler.h"

#include "Poco/Net/NetException.h"

#include "Poco/NullStream.h"

#include "Poco/CountingStream.h"

#include "Poco/StreamCopier.h"

#include "Poco/URI.h"

#include "Poco/String.h"

#include "Poco/CountingStream.h"

#include "Poco/UTF8String.h"

#include <sstream>

using Poco::NullInputStream;

using Poco::StreamCopier;

using Poco::SyntaxException;

using Poco::URI;

using Poco::icompare;

namespace Poco {

namespace Net {

const std::string HTMLForm::ENCODING_URL = "application/x-www-form-urlencoded";

const std::string HTMLForm::ENCODING_MULTIPART = "multipart/form-data";

const int HTMLForm::UNKNOWN_CONTENT_LENGTH = -1;

class HTMLFormCountingOutputStream: public CountingOutputStream

{

public:

HTMLFormCountingOutputStream():

_valid(true)

{

}

bool isValid() const

{

return _valid;

}

void setValid(bool v)

{

_valid = v;

}

private:

bool _valid;

};

HTMLForm::HTMLForm():

_fieldLimit(DFL_FIELD_LIMIT),

_encoding(ENCODING_URL)

{

}

HTMLForm::HTMLForm(const std::string& encoding):

_fieldLimit(DFL_FIELD_LIMIT),

_encoding(encoding)

{

}

HTMLForm::HTMLForm(const HTTPRequest& request, std::istream& requestBody, PartHandler& handler):

_fieldLimit(DFL_FIELD_LIMIT)

{

load(request, requestBody, handler);

}

HTMLForm::HTMLForm(const HTTPRequest& request, std::istream& requestBody):

_fieldLimit(DFL_FIELD_LIMIT)

{

load(request, requestBody);

}

HTMLForm::HTMLForm(const HTTPRequest& request):

_fieldLimit(DFL_FIELD_LIMIT)

{

load(request);

}

HTMLForm::~HTMLForm()

{

for (PartVec::iterator it = _parts.begin(); it != _parts.end(); ++it)

{

delete it->pSource;

}

void HTMLForm::setEncoding(const std::string& encoding)

{

_encoding = encoding;

}

void HTMLForm::addPart(const std::string& name, PartSource* pSource)

{

poco_check_ptr (pSource);

Part part;

part.name = name;

part.pSource = pSource;

_parts.push_back(part);

}

void HTMLForm::load(const HTTPRequest& request, std::istream& requestBody, PartHandler& handler)

{

clear();

URI uri(request.getURI());

const std::string& query = uri.getRawQuery();

if (!query.empty())

{

std::istringstream istr(query);

readUrl(istr);

}

if (request.getMethod() == HTTPRequest::HTTP_POST || request.getMethod() == HTTPRequest::HTTP_PUT)

{

std::string mediaType;

NameValueCollection params;

MessageHeader::splitParameters(request.getContentType(), mediaType, params);

_encoding = mediaType;

if (_encoding == ENCODING_MULTIPART)

{

_boundary = params["boundary"];

readMultipart(requestBody, handler);

}

else

{

readUrl(requestBody);

}

void HTMLForm::load(const HTTPRequest& request, std::istream& requestBody)

{

NullPartHandler nah;

load(request, requestBody, nah);

}

void HTMLForm::load(const HTTPRequest& request)

{

NullPartHandler nah;

NullInputStream nis;

load(request, nis, nah);

}

void HTMLForm::read(std::istream& istr, PartHandler& handler)

{

if (_encoding == ENCODING_URL)

readUrl(istr);

else

readMultipart(istr, handler);

}

void HTMLForm::read(std::istream& istr)

{

readUrl(istr);

}

void HTMLForm::read(const std::string& queryString)

{

std::istringstream istr(queryString);

readUrl(istr);

}

void HTMLForm::prepareSubmit(HTTPRequest& request)

{

if (request.getMethod() == HTTPRequest::HTTP_POST || request.getMethod() == HTTPRequest::HTTP_PUT)

{

if (_encoding == ENCODING_URL)

{

request.setContentType(_encoding);

request.setChunkedTransferEncoding(false);

Poco::CountingOutputStream ostr;

writeUrl(ostr);

request.setContentLength(ostr.chars());

}

else

{

_boundary = MultipartWriter::createBoundary();

std::string ct(_encoding);

ct.append("; boundary=\"");

ct.append(_boundary);

ct.append("\"");

request.setContentType(ct);

}

if (request.getVersion() == HTTPMessage::HTTP_1_0)

{

request.setKeepAlive(false);

request.setChunkedTransferEncoding(false);

}

else if (_encoding != ENCODING_URL)

{

request.setChunkedTransferEncoding(true);

}

else

{

std::string uri = request.getURI();

std::ostringstream ostr;

writeUrl(ostr);

uri.append("?");

uri.append(ostr.str());

request.setURI(uri);

}

std::streamsize HTMLForm::calculateContentLength()

{

if (_boundary.empty())

throw HTMLFormException("Form must be prepared");

HTMLFormCountingOutputStream c;

write(c);

if (c.isValid())

return c.chars();

else

return UNKNOWN_CONTENT_LENGTH;

}

void HTMLForm::write(std::ostream& ostr, const std::string& boundary)

{

if (_encoding == ENCODING_URL)

{

writeUrl(ostr);

}

else

{

_boundary = boundary;

writeMultipart(ostr);

}

void HTMLForm::write(std::ostream& ostr)

{

if (_encoding == ENCODING_URL)

writeUrl(ostr);

else

writeMultipart(ostr);

}

void HTMLForm::readUrl(std::istream& istr)

{

static const int eof = std::char_traits<char>::eof();

int fields = 0;

int ch = istr.get();

bool isFirst = true;

while (ch != eof)

{

if (_fieldLimit > 0 && fields == _fieldLimit)

throw HTMLFormException("Too many form fields");

std::string name;

std::string value;

while (ch != eof && ch != '=' && ch != '&')

{

if (ch == '+') ch = ' ';

name += (char) ch;

ch = istr.get();

}

if (ch == '=')

{

ch = istr.get();

while (ch != eof && ch != '&')

{

if (ch == '+') ch = ' ';

value += (char) ch;

ch = istr.get();

}

// remove UTF-8 byte order mark from first name, if present

if (isFirst)

{

UTF8::removeBOM(name);

}

std::string decodedName;

std::string decodedValue;

URI::decode(name, decodedName);

URI::decode(value, decodedValue);

add(decodedName, decodedValue);

++fields;

if (ch == '&') ch = istr.get();

isFirst = false;

}

void HTMLForm::readMultipart(std::istream& istr, PartHandler& handler)

{

static const int eof = std::char_traits<char>::eof();

int fields = 0;

MultipartReader reader(istr, _boundary);

while (reader.hasNextPart())

{

if (_fieldLimit > 0 && fields == _fieldLimit)

throw HTMLFormException("Too many form fields");

MessageHeader header;

reader.nextPart(header);

std::string disp;

NameValueCollection params;

if (header.has("Content-Disposition"))

{

std::string cd = header.get("Content-Disposition");

MessageHeader::splitParameters(cd, disp, params);

}

if (params.has("filename"))

{

handler.handlePart(header, reader.stream());

// Ensure that the complete part has been read.

while (reader.stream().good()) reader.stream().get();

}

else

{

std::string name = params["name"];

std::string value;

std::istream& istr = reader.stream();

int ch = istr.get();

while (ch != eof)

{

value += (char) ch;

ch = istr.get();

}

add(name, value);

}

++fields;

}

void HTMLForm::writeUrl(std::ostream& ostr)

{

for (NameValueCollection::ConstIterator it = begin(); it != end(); ++it)

{

if (it != begin()) ostr << "&";

std::string name;

URI::encode(it->first, "!?#/'\",;:$&()[]*+=@", name);

std::string value;

URI::encode(it->second, "!?#/'\",;:$&()[]*+=@", value);

ostr << name << "=" << value;

}

void HTMLForm::writeMultipart(std::ostream& ostr)

{

HTMLFormCountingOutputStream *costr(dynamic_cast<HTMLFormCountingOutputStream*>(&ostr));

MultipartWriter writer(ostr, _boundary);

for (NameValueCollection::ConstIterator it = begin(); it != end(); ++it)

{

MessageHeader header;

std::string disp("form-data; name=\"");

disp.append(it->first);

disp.append("\"");

header.set("Content-Disposition", disp);

writer.nextPart(header);

ostr << it->second;

}

for (PartVec::iterator ita = _parts.begin(); ita != _parts.end(); ++ita)

{

MessageHeader header(ita->pSource->headers());

std::string disp("form-data; name=\"");

disp.append(ita->name);

disp.append("\"");

std::string filename = ita->pSource->filename();

if (!filename.empty())

{

disp.append("; filename=\"");

disp.append(filename);

disp.append("\"");

}

header.set("Content-Disposition", disp);

header.set("Content-Type", ita->pSource->mediaType());

writer.nextPart(header);

if (costr)

{

// count only, don't move stream position

std::streamsize partlen = ita->pSource->getContentLength();

if (partlen != PartSource::UNKNOWN_CONTENT_LENGTH)

costr->addChars(static_cast<int>(partlen));

else

costr->setValid(false);

}

else

StreamCopier::copyStream(ita->pSource->stream(), ostr);

}

writer.close();

_boundary = writer.boundary();

}

void HTMLForm::setFieldLimit(int limit)

{

poco_assert (limit >= 0);

_fieldLimit = limit;

}

} } // namespace Poco::Net

poco/Net/src/HTMLForm.cpp at develop · cppfool/poco · GitHub

Expand file tree

Breadcrumbs

HTMLForm.cpp

Latest commit

History

Breadcrumbs

HTMLForm.cpp

File metadata and controls