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| 1 /* | |
| 2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license | |
| 5 * that can be found in the LICENSE file in the root of the source | |
| 6 * tree. An additional intellectual property rights grant can be found | |
| 7 * in the file PATENTS. All contributing project authors may | |
| 8 * be found in the AUTHORS file in the root of the source tree. | |
| 9 */ | |
| 10 | |
| 11 #include <time.h> | |
| 12 | |
| 13 #if defined(WEBRTC_WIN) | |
| 14 #define WIN32_LEAN_AND_MEAN | |
| 15 #include <windows.h> | |
| 16 #include <winsock2.h> | |
| 17 #include <ws2tcpip.h> | |
| 18 #define SECURITY_WIN32 | |
| 19 #include <security.h> | |
| 20 #endif | |
| 21 | |
| 22 #include <algorithm> | |
| 23 | |
| 24 #include "webrtc/base/arraysize.h" | |
| 25 #include "webrtc/base/base64.h" | |
| 26 #include "webrtc/base/checks.h" | |
| 27 #include "webrtc/base/cryptstring.h" | |
| 28 #include "webrtc/base/httpcommon-inl.h" | |
| 29 #include "webrtc/base/httpcommon.h" | |
| 30 #include "webrtc/base/messagedigest.h" | |
| 31 #include "webrtc/base/socketaddress.h" | |
| 32 #include "webrtc/base/stringencode.h" | |
| 33 #include "webrtc/base/stringutils.h" | |
| 34 | |
| 35 namespace rtc { | |
| 36 | |
| 37 #if defined(WEBRTC_WIN) | |
| 38 extern const ConstantLabel SECURITY_ERRORS[]; | |
| 39 #endif | |
| 40 | |
| 41 ////////////////////////////////////////////////////////////////////// | |
| 42 // Enum - TODO: expose globally later? | |
| 43 ////////////////////////////////////////////////////////////////////// | |
| 44 | |
| 45 bool find_string(size_t& index, const std::string& needle, | |
| 46 const char* const haystack[], size_t max_index) { | |
| 47 for (index=0; index<max_index; ++index) { | |
| 48 if (_stricmp(needle.c_str(), haystack[index]) == 0) { | |
| 49 return true; | |
| 50 } | |
| 51 } | |
| 52 return false; | |
| 53 } | |
| 54 | |
| 55 template<class E> | |
| 56 struct Enum { | |
| 57 static const char** Names; | |
| 58 static size_t Size; | |
| 59 | |
| 60 static inline const char* Name(E val) { return Names[val]; } | |
| 61 static inline bool Parse(E& val, const std::string& name) { | |
| 62 size_t index; | |
| 63 if (!find_string(index, name, Names, Size)) | |
| 64 return false; | |
| 65 val = static_cast<E>(index); | |
| 66 return true; | |
| 67 } | |
| 68 | |
| 69 E val; | |
| 70 | |
| 71 inline operator E&() { return val; } | |
| 72 inline Enum& operator=(E rhs) { val = rhs; return *this; } | |
| 73 | |
| 74 inline const char* name() const { return Name(val); } | |
| 75 inline bool assign(const std::string& name) { return Parse(val, name); } | |
| 76 inline Enum& operator=(const std::string& rhs) { assign(rhs); return *this; } | |
| 77 }; | |
| 78 | |
| 79 #define ENUM(e,n) \ | |
| 80 template<> const char** Enum<e>::Names = n; \ | |
| 81 template<> size_t Enum<e>::Size = sizeof(n)/sizeof(n[0]) | |
| 82 | |
| 83 ////////////////////////////////////////////////////////////////////// | |
| 84 // HttpCommon | |
| 85 ////////////////////////////////////////////////////////////////////// | |
| 86 | |
| 87 static const char* kHttpVersions[HVER_LAST+1] = { | |
| 88 "1.0", "1.1", "Unknown" | |
| 89 }; | |
| 90 ENUM(HttpVersion, kHttpVersions); | |
| 91 | |
| 92 static const char* kHttpVerbs[HV_LAST+1] = { | |
| 93 "GET", "POST", "PUT", "DELETE", "CONNECT", "HEAD" | |
| 94 }; | |
| 95 ENUM(HttpVerb, kHttpVerbs); | |
| 96 | |
| 97 static const char* kHttpHeaders[HH_LAST+1] = { | |
| 98 "Age", | |
| 99 "Cache-Control", | |
| 100 "Connection", | |
| 101 "Content-Disposition", | |
| 102 "Content-Length", | |
| 103 "Content-Range", | |
| 104 "Content-Type", | |
| 105 "Cookie", | |
| 106 "Date", | |
| 107 "ETag", | |
| 108 "Expires", | |
| 109 "Host", | |
| 110 "If-Modified-Since", | |
| 111 "If-None-Match", | |
| 112 "Keep-Alive", | |
| 113 "Last-Modified", | |
| 114 "Location", | |
| 115 "Proxy-Authenticate", | |
| 116 "Proxy-Authorization", | |
| 117 "Proxy-Connection", | |
| 118 "Range", | |
| 119 "Set-Cookie", | |
| 120 "TE", | |
| 121 "Trailers", | |
| 122 "Transfer-Encoding", | |
| 123 "Upgrade", | |
| 124 "User-Agent", | |
| 125 "WWW-Authenticate", | |
| 126 }; | |
| 127 ENUM(HttpHeader, kHttpHeaders); | |
| 128 | |
| 129 const char* ToString(HttpVersion version) { | |
| 130 return Enum<HttpVersion>::Name(version); | |
| 131 } | |
| 132 | |
| 133 bool FromString(HttpVersion& version, const std::string& str) { | |
| 134 return Enum<HttpVersion>::Parse(version, str); | |
| 135 } | |
| 136 | |
| 137 const char* ToString(HttpVerb verb) { | |
| 138 return Enum<HttpVerb>::Name(verb); | |
| 139 } | |
| 140 | |
| 141 bool FromString(HttpVerb& verb, const std::string& str) { | |
| 142 return Enum<HttpVerb>::Parse(verb, str); | |
| 143 } | |
| 144 | |
| 145 const char* ToString(HttpHeader header) { | |
| 146 return Enum<HttpHeader>::Name(header); | |
| 147 } | |
| 148 | |
| 149 bool FromString(HttpHeader& header, const std::string& str) { | |
| 150 return Enum<HttpHeader>::Parse(header, str); | |
| 151 } | |
| 152 | |
| 153 bool HttpCodeHasBody(uint32_t code) { | |
| 154 return !HttpCodeIsInformational(code) | |
| 155 && (code != HC_NO_CONTENT) && (code != HC_NOT_MODIFIED); | |
| 156 } | |
| 157 | |
| 158 bool HttpCodeIsCacheable(uint32_t code) { | |
| 159 switch (code) { | |
| 160 case HC_OK: | |
| 161 case HC_NON_AUTHORITATIVE: | |
| 162 case HC_PARTIAL_CONTENT: | |
| 163 case HC_MULTIPLE_CHOICES: | |
| 164 case HC_MOVED_PERMANENTLY: | |
| 165 case HC_GONE: | |
| 166 return true; | |
| 167 default: | |
| 168 return false; | |
| 169 } | |
| 170 } | |
| 171 | |
| 172 bool HttpHeaderIsEndToEnd(HttpHeader header) { | |
| 173 switch (header) { | |
| 174 case HH_CONNECTION: | |
| 175 case HH_KEEP_ALIVE: | |
| 176 case HH_PROXY_AUTHENTICATE: | |
| 177 case HH_PROXY_AUTHORIZATION: | |
| 178 case HH_PROXY_CONNECTION: // Note part of RFC... this is non-standard header | |
| 179 case HH_TE: | |
| 180 case HH_TRAILERS: | |
| 181 case HH_TRANSFER_ENCODING: | |
| 182 case HH_UPGRADE: | |
| 183 return false; | |
| 184 default: | |
| 185 return true; | |
| 186 } | |
| 187 } | |
| 188 | |
| 189 bool HttpHeaderIsCollapsible(HttpHeader header) { | |
| 190 switch (header) { | |
| 191 case HH_SET_COOKIE: | |
| 192 case HH_PROXY_AUTHENTICATE: | |
| 193 case HH_WWW_AUTHENTICATE: | |
| 194 return false; | |
| 195 default: | |
| 196 return true; | |
| 197 } | |
| 198 } | |
| 199 | |
| 200 bool HttpShouldKeepAlive(const HttpData& data) { | |
| 201 std::string connection; | |
| 202 if ((data.hasHeader(HH_PROXY_CONNECTION, &connection) | |
| 203 || data.hasHeader(HH_CONNECTION, &connection))) { | |
| 204 return (_stricmp(connection.c_str(), "Keep-Alive") == 0); | |
| 205 } | |
| 206 return (data.version >= HVER_1_1); | |
| 207 } | |
| 208 | |
| 209 namespace { | |
| 210 | |
| 211 inline bool IsEndOfAttributeName(size_t pos, size_t len, const char * data) { | |
| 212 if (pos >= len) | |
| 213 return true; | |
| 214 if (isspace(static_cast<unsigned char>(data[pos]))) | |
| 215 return true; | |
| 216 // The reason for this complexity is that some attributes may contain trailing | |
| 217 // equal signs (like base64 tokens in Negotiate auth headers) | |
| 218 if ((pos+1 < len) && (data[pos] == '=') && | |
| 219 !isspace(static_cast<unsigned char>(data[pos+1])) && | |
| 220 (data[pos+1] != '=')) { | |
| 221 return true; | |
| 222 } | |
| 223 return false; | |
| 224 } | |
| 225 | |
| 226 // TODO: unittest for EscapeAttribute and HttpComposeAttributes. | |
| 227 | |
| 228 std::string EscapeAttribute(const std::string& attribute) { | |
| 229 const size_t kMaxLength = attribute.length() * 2 + 1; | |
| 230 char* buffer = STACK_ARRAY(char, kMaxLength); | |
| 231 size_t len = escape(buffer, kMaxLength, attribute.data(), attribute.length(), | |
| 232 "\"", '\\'); | |
| 233 return std::string(buffer, len); | |
| 234 } | |
| 235 | |
| 236 } // anonymous namespace | |
| 237 | |
| 238 void HttpComposeAttributes(const HttpAttributeList& attributes, char separator, | |
| 239 std::string* composed) { | |
| 240 std::stringstream ss; | |
| 241 for (size_t i=0; i<attributes.size(); ++i) { | |
| 242 if (i > 0) { | |
| 243 ss << separator << " "; | |
| 244 } | |
| 245 ss << attributes[i].first; | |
| 246 if (!attributes[i].second.empty()) { | |
| 247 ss << "=\"" << EscapeAttribute(attributes[i].second) << "\""; | |
| 248 } | |
| 249 } | |
| 250 *composed = ss.str(); | |
| 251 } | |
| 252 | |
| 253 void HttpParseAttributes(const char * data, size_t len, | |
| 254 HttpAttributeList& attributes) { | |
| 255 size_t pos = 0; | |
| 256 while (true) { | |
| 257 // Skip leading whitespace | |
| 258 while ((pos < len) && isspace(static_cast<unsigned char>(data[pos]))) { | |
| 259 ++pos; | |
| 260 } | |
| 261 | |
| 262 // End of attributes? | |
| 263 if (pos >= len) | |
| 264 return; | |
| 265 | |
| 266 // Find end of attribute name | |
| 267 size_t start = pos; | |
| 268 while (!IsEndOfAttributeName(pos, len, data)) { | |
| 269 ++pos; | |
| 270 } | |
| 271 | |
| 272 HttpAttribute attribute; | |
| 273 attribute.first.assign(data + start, data + pos); | |
| 274 | |
| 275 // Attribute has value? | |
| 276 if ((pos < len) && (data[pos] == '=')) { | |
| 277 ++pos; // Skip '=' | |
| 278 // Check if quoted value | |
| 279 if ((pos < len) && (data[pos] == '"')) { | |
| 280 while (++pos < len) { | |
| 281 if (data[pos] == '"') { | |
| 282 ++pos; | |
| 283 break; | |
| 284 } | |
| 285 if ((data[pos] == '\\') && (pos + 1 < len)) | |
| 286 ++pos; | |
| 287 attribute.second.append(1, data[pos]); | |
| 288 } | |
| 289 } else { | |
| 290 while ((pos < len) && | |
| 291 !isspace(static_cast<unsigned char>(data[pos])) && | |
| 292 (data[pos] != ',')) { | |
| 293 attribute.second.append(1, data[pos++]); | |
| 294 } | |
| 295 } | |
| 296 } | |
| 297 | |
| 298 attributes.push_back(attribute); | |
| 299 if ((pos < len) && (data[pos] == ',')) ++pos; // Skip ',' | |
| 300 } | |
| 301 } | |
| 302 | |
| 303 bool HttpHasAttribute(const HttpAttributeList& attributes, | |
| 304 const std::string& name, | |
| 305 std::string* value) { | |
| 306 for (HttpAttributeList::const_iterator it = attributes.begin(); | |
| 307 it != attributes.end(); ++it) { | |
| 308 if (it->first == name) { | |
| 309 if (value) { | |
| 310 *value = it->second; | |
| 311 } | |
| 312 return true; | |
| 313 } | |
| 314 } | |
| 315 return false; | |
| 316 } | |
| 317 | |
| 318 bool HttpHasNthAttribute(HttpAttributeList& attributes, | |
| 319 size_t index, | |
| 320 std::string* name, | |
| 321 std::string* value) { | |
| 322 if (index >= attributes.size()) | |
| 323 return false; | |
| 324 | |
| 325 if (name) | |
| 326 *name = attributes[index].first; | |
| 327 if (value) | |
| 328 *value = attributes[index].second; | |
| 329 return true; | |
| 330 } | |
| 331 | |
| 332 bool HttpDateToSeconds(const std::string& date, time_t* seconds) { | |
| 333 const char* const kTimeZones[] = { | |
| 334 "UT", "GMT", "EST", "EDT", "CST", "CDT", "MST", "MDT", "PST", "PDT", | |
| 335 "A", "B", "C", "D", "E", "F", "G", "H", "I", "K", "L", "M", | |
| 336 "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y" | |
| 337 }; | |
| 338 const int kTimeZoneOffsets[] = { | |
| 339 0, 0, -5, -4, -6, -5, -7, -6, -8, -7, | |
| 340 -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12, | |
| 341 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 | |
| 342 }; | |
| 343 | |
| 344 RTC_DCHECK(nullptr != seconds); | |
| 345 struct tm tval; | |
| 346 memset(&tval, 0, sizeof(tval)); | |
| 347 char month[4], zone[6]; | |
| 348 memset(month, 0, sizeof(month)); | |
| 349 memset(zone, 0, sizeof(zone)); | |
| 350 | |
| 351 if (7 != sscanf(date.c_str(), "%*3s, %d %3s %d %d:%d:%d %5c", | |
| 352 &tval.tm_mday, month, &tval.tm_year, | |
| 353 &tval.tm_hour, &tval.tm_min, &tval.tm_sec, zone)) { | |
| 354 return false; | |
| 355 } | |
| 356 switch (toupper(month[2])) { | |
| 357 case 'N': tval.tm_mon = (month[1] == 'A') ? 0 : 5; break; | |
| 358 case 'B': tval.tm_mon = 1; break; | |
| 359 case 'R': tval.tm_mon = (month[0] == 'M') ? 2 : 3; break; | |
| 360 case 'Y': tval.tm_mon = 4; break; | |
| 361 case 'L': tval.tm_mon = 6; break; | |
| 362 case 'G': tval.tm_mon = 7; break; | |
| 363 case 'P': tval.tm_mon = 8; break; | |
| 364 case 'T': tval.tm_mon = 9; break; | |
| 365 case 'V': tval.tm_mon = 10; break; | |
| 366 case 'C': tval.tm_mon = 11; break; | |
| 367 } | |
| 368 tval.tm_year -= 1900; | |
| 369 time_t gmt, non_gmt = mktime(&tval); | |
| 370 if ((zone[0] == '+') || (zone[0] == '-')) { | |
| 371 if (!isdigit(zone[1]) || !isdigit(zone[2]) | |
| 372 || !isdigit(zone[3]) || !isdigit(zone[4])) { | |
| 373 return false; | |
| 374 } | |
| 375 int hours = (zone[1] - '0') * 10 + (zone[2] - '0'); | |
| 376 int minutes = (zone[3] - '0') * 10 + (zone[4] - '0'); | |
| 377 int offset = (hours * 60 + minutes) * 60; | |
| 378 gmt = non_gmt + ((zone[0] == '+') ? offset : -offset); | |
| 379 } else { | |
| 380 size_t zindex; | |
| 381 if (!find_string(zindex, zone, kTimeZones, arraysize(kTimeZones))) { | |
| 382 return false; | |
| 383 } | |
| 384 gmt = non_gmt + kTimeZoneOffsets[zindex] * 60 * 60; | |
| 385 } | |
| 386 // TODO: Android should support timezone, see b/2441195 | |
| 387 #if defined(WEBRTC_MAC) && !defined(WEBRTC_IOS) || defined(WEBRTC_ANDROID) || de
fined(BSD) | |
| 388 tm *tm_for_timezone = localtime(&gmt); | |
| 389 *seconds = gmt + tm_for_timezone->tm_gmtoff; | |
| 390 #else | |
| 391 #if defined(_MSC_VER) && _MSC_VER >= 1900 | |
| 392 long timezone = 0; | |
| 393 _get_timezone(&timezone); | |
| 394 #endif | |
| 395 *seconds = gmt - timezone; | |
| 396 #endif | |
| 397 return true; | |
| 398 } | |
| 399 | |
| 400 std::string HttpAddress(const SocketAddress& address, bool secure) { | |
| 401 return (address.port() == HttpDefaultPort(secure)) | |
| 402 ? address.hostname() : address.ToString(); | |
| 403 } | |
| 404 | |
| 405 ////////////////////////////////////////////////////////////////////// | |
| 406 // HttpData | |
| 407 ////////////////////////////////////////////////////////////////////// | |
| 408 | |
| 409 HttpData::HttpData() : version(HVER_1_1) { | |
| 410 } | |
| 411 | |
| 412 HttpData::~HttpData() = default; | |
| 413 | |
| 414 void | |
| 415 HttpData::clear(bool release_document) { | |
| 416 // Clear headers first, since releasing a document may have far-reaching | |
| 417 // effects. | |
| 418 headers_.clear(); | |
| 419 if (release_document) { | |
| 420 document.reset(); | |
| 421 } | |
| 422 } | |
| 423 | |
| 424 void | |
| 425 HttpData::copy(const HttpData& src) { | |
| 426 headers_ = src.headers_; | |
| 427 } | |
| 428 | |
| 429 void | |
| 430 HttpData::changeHeader(const std::string& name, const std::string& value, | |
| 431 HeaderCombine combine) { | |
| 432 if (combine == HC_AUTO) { | |
| 433 HttpHeader header; | |
| 434 // Unrecognized headers are collapsible | |
| 435 combine = !FromString(header, name) || HttpHeaderIsCollapsible(header) | |
| 436 ? HC_YES : HC_NO; | |
| 437 } else if (combine == HC_REPLACE) { | |
| 438 headers_.erase(name); | |
| 439 combine = HC_NO; | |
| 440 } | |
| 441 // At this point, combine is one of (YES, NO, NEW) | |
| 442 if (combine != HC_NO) { | |
| 443 HeaderMap::iterator it = headers_.find(name); | |
| 444 if (it != headers_.end()) { | |
| 445 if (combine == HC_YES) { | |
| 446 it->second.append(","); | |
| 447 it->second.append(value); | |
| 448 } | |
| 449 return; | |
| 450 } | |
| 451 } | |
| 452 headers_.insert(HeaderMap::value_type(name, value)); | |
| 453 } | |
| 454 | |
| 455 size_t HttpData::clearHeader(const std::string& name) { | |
| 456 return headers_.erase(name); | |
| 457 } | |
| 458 | |
| 459 HttpData::iterator HttpData::clearHeader(iterator header) { | |
| 460 iterator deprecated = header++; | |
| 461 headers_.erase(deprecated); | |
| 462 return header; | |
| 463 } | |
| 464 | |
| 465 bool | |
| 466 HttpData::hasHeader(const std::string& name, std::string* value) const { | |
| 467 HeaderMap::const_iterator it = headers_.find(name); | |
| 468 if (it == headers_.end()) { | |
| 469 return false; | |
| 470 } else if (value) { | |
| 471 *value = it->second; | |
| 472 } | |
| 473 return true; | |
| 474 } | |
| 475 | |
| 476 void HttpData::setContent(const std::string& content_type, | |
| 477 StreamInterface* document) { | |
| 478 setHeader(HH_CONTENT_TYPE, content_type); | |
| 479 setDocumentAndLength(document); | |
| 480 } | |
| 481 | |
| 482 void HttpData::setDocumentAndLength(StreamInterface* document) { | |
| 483 // TODO: Consider calling Rewind() here? | |
| 484 RTC_DCHECK(!hasHeader(HH_CONTENT_LENGTH, nullptr)); | |
| 485 RTC_DCHECK(!hasHeader(HH_TRANSFER_ENCODING, nullptr)); | |
| 486 RTC_DCHECK(document != nullptr); | |
| 487 this->document.reset(document); | |
| 488 size_t content_length = 0; | |
| 489 if (this->document->GetAvailable(&content_length)) { | |
| 490 char buffer[32]; | |
| 491 sprintfn(buffer, sizeof(buffer), "%d", content_length); | |
| 492 setHeader(HH_CONTENT_LENGTH, buffer); | |
| 493 } else { | |
| 494 setHeader(HH_TRANSFER_ENCODING, "chunked"); | |
| 495 } | |
| 496 } | |
| 497 | |
| 498 // | |
| 499 // HttpRequestData | |
| 500 // | |
| 501 | |
| 502 void | |
| 503 HttpRequestData::clear(bool release_document) { | |
| 504 verb = HV_GET; | |
| 505 path.clear(); | |
| 506 HttpData::clear(release_document); | |
| 507 } | |
| 508 | |
| 509 void | |
| 510 HttpRequestData::copy(const HttpRequestData& src) { | |
| 511 verb = src.verb; | |
| 512 path = src.path; | |
| 513 HttpData::copy(src); | |
| 514 } | |
| 515 | |
| 516 size_t | |
| 517 HttpRequestData::formatLeader(char* buffer, size_t size) const { | |
| 518 RTC_DCHECK(path.find(' ') == std::string::npos); | |
| 519 return sprintfn(buffer, size, "%s %.*s HTTP/%s", ToString(verb), path.size(), | |
| 520 path.data(), ToString(version)); | |
| 521 } | |
| 522 | |
| 523 HttpError | |
| 524 HttpRequestData::parseLeader(const char* line, size_t len) { | |
| 525 unsigned int vmajor, vminor; | |
| 526 int vend, dstart, dend; | |
| 527 // sscanf isn't safe with strings that aren't null-terminated, and there is | |
| 528 // no guarantee that |line| is. Create a local copy that is null-terminated. | |
| 529 std::string line_str(line, len); | |
| 530 line = line_str.c_str(); | |
| 531 if ((sscanf(line, "%*s%n %n%*s%n HTTP/%u.%u", | |
| 532 &vend, &dstart, &dend, &vmajor, &vminor) != 2) | |
| 533 || (vmajor != 1)) { | |
| 534 return HE_PROTOCOL; | |
| 535 } | |
| 536 if (vminor == 0) { | |
| 537 version = HVER_1_0; | |
| 538 } else if (vminor == 1) { | |
| 539 version = HVER_1_1; | |
| 540 } else { | |
| 541 return HE_PROTOCOL; | |
| 542 } | |
| 543 std::string sverb(line, vend); | |
| 544 if (!FromString(verb, sverb.c_str())) { | |
| 545 return HE_PROTOCOL; // !?! HC_METHOD_NOT_SUPPORTED? | |
| 546 } | |
| 547 path.assign(line + dstart, line + dend); | |
| 548 return HE_NONE; | |
| 549 } | |
| 550 | |
| 551 bool HttpRequestData::getAbsoluteUri(std::string* uri) const { | |
| 552 if (HV_CONNECT == verb) | |
| 553 return false; | |
| 554 Url<char> url(path); | |
| 555 if (url.valid()) { | |
| 556 uri->assign(path); | |
| 557 return true; | |
| 558 } | |
| 559 std::string host; | |
| 560 if (!hasHeader(HH_HOST, &host)) | |
| 561 return false; | |
| 562 url.set_address(host); | |
| 563 url.set_full_path(path); | |
| 564 uri->assign(url.url()); | |
| 565 return url.valid(); | |
| 566 } | |
| 567 | |
| 568 bool HttpRequestData::getRelativeUri(std::string* host, | |
| 569 std::string* path) const | |
| 570 { | |
| 571 if (HV_CONNECT == verb) | |
| 572 return false; | |
| 573 Url<char> url(this->path); | |
| 574 if (url.valid()) { | |
| 575 host->assign(url.address()); | |
| 576 path->assign(url.full_path()); | |
| 577 return true; | |
| 578 } | |
| 579 if (!hasHeader(HH_HOST, host)) | |
| 580 return false; | |
| 581 path->assign(this->path); | |
| 582 return true; | |
| 583 } | |
| 584 | |
| 585 // | |
| 586 // HttpResponseData | |
| 587 // | |
| 588 | |
| 589 void | |
| 590 HttpResponseData::clear(bool release_document) { | |
| 591 scode = HC_INTERNAL_SERVER_ERROR; | |
| 592 message.clear(); | |
| 593 HttpData::clear(release_document); | |
| 594 } | |
| 595 | |
| 596 void | |
| 597 HttpResponseData::copy(const HttpResponseData& src) { | |
| 598 scode = src.scode; | |
| 599 message = src.message; | |
| 600 HttpData::copy(src); | |
| 601 } | |
| 602 | |
| 603 void HttpResponseData::set_success(uint32_t scode) { | |
| 604 this->scode = scode; | |
| 605 message.clear(); | |
| 606 setHeader(HH_CONTENT_LENGTH, "0", false); | |
| 607 } | |
| 608 | |
| 609 void HttpResponseData::set_success(const std::string& content_type, | |
| 610 StreamInterface* document, | |
| 611 uint32_t scode) { | |
| 612 this->scode = scode; | |
| 613 message.erase(message.begin(), message.end()); | |
| 614 setContent(content_type, document); | |
| 615 } | |
| 616 | |
| 617 void HttpResponseData::set_redirect(const std::string& location, | |
| 618 uint32_t scode) { | |
| 619 this->scode = scode; | |
| 620 message.clear(); | |
| 621 setHeader(HH_LOCATION, location); | |
| 622 setHeader(HH_CONTENT_LENGTH, "0", false); | |
| 623 } | |
| 624 | |
| 625 void HttpResponseData::set_error(uint32_t scode) { | |
| 626 this->scode = scode; | |
| 627 message.clear(); | |
| 628 setHeader(HH_CONTENT_LENGTH, "0", false); | |
| 629 } | |
| 630 | |
| 631 size_t | |
| 632 HttpResponseData::formatLeader(char* buffer, size_t size) const { | |
| 633 size_t len = sprintfn(buffer, size, "HTTP/%s %lu", ToString(version), scode); | |
| 634 if (!message.empty()) { | |
| 635 len += sprintfn(buffer + len, size - len, " %.*s", | |
| 636 message.size(), message.data()); | |
| 637 } | |
| 638 return len; | |
| 639 } | |
| 640 | |
| 641 HttpError | |
| 642 HttpResponseData::parseLeader(const char* line, size_t len) { | |
| 643 size_t pos = 0; | |
| 644 unsigned int vmajor, vminor, temp_scode; | |
| 645 int temp_pos; | |
| 646 // sscanf isn't safe with strings that aren't null-terminated, and there is | |
| 647 // no guarantee that |line| is. Create a local copy that is null-terminated. | |
| 648 std::string line_str(line, len); | |
| 649 line = line_str.c_str(); | |
| 650 if (sscanf(line, "HTTP %u%n", | |
| 651 &temp_scode, &temp_pos) == 1) { | |
| 652 // This server's response has no version. :( NOTE: This happens for every | |
| 653 // response to requests made from Chrome plugins, regardless of the server's | |
| 654 // behaviour. | |
| 655 LOG(LS_VERBOSE) << "HTTP version missing from response"; | |
| 656 version = HVER_UNKNOWN; | |
| 657 } else if ((sscanf(line, "HTTP/%u.%u %u%n", | |
| 658 &vmajor, &vminor, &temp_scode, &temp_pos) == 3) | |
| 659 && (vmajor == 1)) { | |
| 660 // This server's response does have a version. | |
| 661 if (vminor == 0) { | |
| 662 version = HVER_1_0; | |
| 663 } else if (vminor == 1) { | |
| 664 version = HVER_1_1; | |
| 665 } else { | |
| 666 return HE_PROTOCOL; | |
| 667 } | |
| 668 } else { | |
| 669 return HE_PROTOCOL; | |
| 670 } | |
| 671 scode = temp_scode; | |
| 672 pos = static_cast<size_t>(temp_pos); | |
| 673 while ((pos < len) && isspace(static_cast<unsigned char>(line[pos]))) ++pos; | |
| 674 message.assign(line + pos, len - pos); | |
| 675 return HE_NONE; | |
| 676 } | |
| 677 | |
| 678 ////////////////////////////////////////////////////////////////////// | |
| 679 // Http Authentication | |
| 680 ////////////////////////////////////////////////////////////////////// | |
| 681 | |
| 682 std::string quote(const std::string& str) { | |
| 683 std::string result; | |
| 684 result.push_back('"'); | |
| 685 for (size_t i=0; i<str.size(); ++i) { | |
| 686 if ((str[i] == '"') || (str[i] == '\\')) | |
| 687 result.push_back('\\'); | |
| 688 result.push_back(str[i]); | |
| 689 } | |
| 690 result.push_back('"'); | |
| 691 return result; | |
| 692 } | |
| 693 | |
| 694 #if defined(WEBRTC_WIN) | |
| 695 struct NegotiateAuthContext : public HttpAuthContext { | |
| 696 CredHandle cred; | |
| 697 CtxtHandle ctx; | |
| 698 size_t steps; | |
| 699 bool specified_credentials; | |
| 700 | |
| 701 NegotiateAuthContext(const std::string& auth, CredHandle c1, CtxtHandle c2) | |
| 702 : HttpAuthContext(auth), cred(c1), ctx(c2), steps(0), | |
| 703 specified_credentials(false) | |
| 704 { } | |
| 705 | |
| 706 virtual ~NegotiateAuthContext() { | |
| 707 DeleteSecurityContext(&ctx); | |
| 708 FreeCredentialsHandle(&cred); | |
| 709 } | |
| 710 }; | |
| 711 #endif // WEBRTC_WIN | |
| 712 | |
| 713 HttpAuthResult HttpAuthenticate( | |
| 714 const char * challenge, size_t len, | |
| 715 const SocketAddress& server, | |
| 716 const std::string& method, const std::string& uri, | |
| 717 const std::string& username, const CryptString& password, | |
| 718 HttpAuthContext *& context, std::string& response, std::string& auth_method) | |
| 719 { | |
| 720 HttpAttributeList args; | |
| 721 HttpParseAttributes(challenge, len, args); | |
| 722 HttpHasNthAttribute(args, 0, &auth_method, nullptr); | |
| 723 | |
| 724 if (context && (context->auth_method != auth_method)) | |
| 725 return HAR_IGNORE; | |
| 726 | |
| 727 // BASIC | |
| 728 if (_stricmp(auth_method.c_str(), "basic") == 0) { | |
| 729 if (context) | |
| 730 return HAR_CREDENTIALS; // Bad credentials | |
| 731 if (username.empty()) | |
| 732 return HAR_CREDENTIALS; // Missing credentials | |
| 733 | |
| 734 context = new HttpAuthContext(auth_method); | |
| 735 | |
| 736 // TODO: convert sensitive to a secure buffer that gets securely deleted | |
| 737 //std::string decoded = username + ":" + password; | |
| 738 size_t len = username.size() + password.GetLength() + 2; | |
| 739 char * sensitive = new char[len]; | |
| 740 size_t pos = strcpyn(sensitive, len, username.data(), username.size()); | |
| 741 pos += strcpyn(sensitive + pos, len - pos, ":"); | |
| 742 password.CopyTo(sensitive + pos, true); | |
| 743 | |
| 744 response = auth_method; | |
| 745 response.append(" "); | |
| 746 // TODO: create a sensitive-source version of Base64::encode | |
| 747 response.append(Base64::Encode(sensitive)); | |
| 748 memset(sensitive, 0, len); | |
| 749 delete [] sensitive; | |
| 750 return HAR_RESPONSE; | |
| 751 } | |
| 752 | |
| 753 // DIGEST | |
| 754 if (_stricmp(auth_method.c_str(), "digest") == 0) { | |
| 755 if (context) | |
| 756 return HAR_CREDENTIALS; // Bad credentials | |
| 757 if (username.empty()) | |
| 758 return HAR_CREDENTIALS; // Missing credentials | |
| 759 | |
| 760 context = new HttpAuthContext(auth_method); | |
| 761 | |
| 762 std::string cnonce, ncount; | |
| 763 char buffer[256]; | |
| 764 sprintf(buffer, "%d", static_cast<int>(time(0))); | |
| 765 cnonce = MD5(buffer); | |
| 766 ncount = "00000001"; | |
| 767 | |
| 768 std::string realm, nonce, qop, opaque; | |
| 769 HttpHasAttribute(args, "realm", &realm); | |
| 770 HttpHasAttribute(args, "nonce", &nonce); | |
| 771 bool has_qop = HttpHasAttribute(args, "qop", &qop); | |
| 772 bool has_opaque = HttpHasAttribute(args, "opaque", &opaque); | |
| 773 | |
| 774 // TODO: convert sensitive to be secure buffer | |
| 775 //std::string A1 = username + ":" + realm + ":" + password; | |
| 776 size_t len = username.size() + realm.size() + password.GetLength() + 3; | |
| 777 char * sensitive = new char[len]; // A1 | |
| 778 size_t pos = strcpyn(sensitive, len, username.data(), username.size()); | |
| 779 pos += strcpyn(sensitive + pos, len - pos, ":"); | |
| 780 pos += strcpyn(sensitive + pos, len - pos, realm.c_str()); | |
| 781 pos += strcpyn(sensitive + pos, len - pos, ":"); | |
| 782 password.CopyTo(sensitive + pos, true); | |
| 783 | |
| 784 std::string A2 = method + ":" + uri; | |
| 785 std::string middle; | |
| 786 if (has_qop) { | |
| 787 qop = "auth"; | |
| 788 middle = nonce + ":" + ncount + ":" + cnonce + ":" + qop; | |
| 789 } else { | |
| 790 middle = nonce; | |
| 791 } | |
| 792 std::string HA1 = MD5(sensitive); | |
| 793 memset(sensitive, 0, len); | |
| 794 delete [] sensitive; | |
| 795 std::string HA2 = MD5(A2); | |
| 796 std::string dig_response = MD5(HA1 + ":" + middle + ":" + HA2); | |
| 797 | |
| 798 std::stringstream ss; | |
| 799 ss << auth_method; | |
| 800 ss << " username=" << quote(username); | |
| 801 ss << ", realm=" << quote(realm); | |
| 802 ss << ", nonce=" << quote(nonce); | |
| 803 ss << ", uri=" << quote(uri); | |
| 804 if (has_qop) { | |
| 805 ss << ", qop=" << qop; | |
| 806 ss << ", nc=" << ncount; | |
| 807 ss << ", cnonce=" << quote(cnonce); | |
| 808 } | |
| 809 ss << ", response=\"" << dig_response << "\""; | |
| 810 if (has_opaque) { | |
| 811 ss << ", opaque=" << quote(opaque); | |
| 812 } | |
| 813 response = ss.str(); | |
| 814 return HAR_RESPONSE; | |
| 815 } | |
| 816 | |
| 817 #if defined(WEBRTC_WIN) | |
| 818 #if 1 | |
| 819 bool want_negotiate = (_stricmp(auth_method.c_str(), "negotiate") == 0); | |
| 820 bool want_ntlm = (_stricmp(auth_method.c_str(), "ntlm") == 0); | |
| 821 // SPNEGO & NTLM | |
| 822 if (want_negotiate || want_ntlm) { | |
| 823 const size_t MAX_MESSAGE = 12000, MAX_SPN = 256; | |
| 824 char out_buf[MAX_MESSAGE], spn[MAX_SPN]; | |
| 825 | |
| 826 #if 0 // Requires funky windows versions | |
| 827 DWORD len = MAX_SPN; | |
| 828 if (DsMakeSpn("HTTP", server.HostAsURIString().c_str(), nullptr, | |
| 829 server.port(), | |
| 830 0, &len, spn) != ERROR_SUCCESS) { | |
| 831 LOG_F(WARNING) << "(Negotiate) - DsMakeSpn failed"; | |
| 832 return HAR_IGNORE; | |
| 833 } | |
| 834 #else | |
| 835 sprintfn(spn, MAX_SPN, "HTTP/%s", server.ToString().c_str()); | |
| 836 #endif | |
| 837 | |
| 838 SecBuffer out_sec; | |
| 839 out_sec.pvBuffer = out_buf; | |
| 840 out_sec.cbBuffer = sizeof(out_buf); | |
| 841 out_sec.BufferType = SECBUFFER_TOKEN; | |
| 842 | |
| 843 SecBufferDesc out_buf_desc; | |
| 844 out_buf_desc.ulVersion = 0; | |
| 845 out_buf_desc.cBuffers = 1; | |
| 846 out_buf_desc.pBuffers = &out_sec; | |
| 847 | |
| 848 const ULONG NEG_FLAGS_DEFAULT = | |
| 849 //ISC_REQ_ALLOCATE_MEMORY | |
| 850 ISC_REQ_CONFIDENTIALITY | |
| 851 //| ISC_REQ_EXTENDED_ERROR | |
| 852 //| ISC_REQ_INTEGRITY | |
| 853 | ISC_REQ_REPLAY_DETECT | |
| 854 | ISC_REQ_SEQUENCE_DETECT | |
| 855 //| ISC_REQ_STREAM | |
| 856 //| ISC_REQ_USE_SUPPLIED_CREDS | |
| 857 ; | |
| 858 | |
| 859 ::TimeStamp lifetime; | |
| 860 SECURITY_STATUS ret = S_OK; | |
| 861 ULONG ret_flags = 0, flags = NEG_FLAGS_DEFAULT; | |
| 862 | |
| 863 bool specify_credentials = !username.empty(); | |
| 864 size_t steps = 0; | |
| 865 | |
| 866 // uint32_t now = Time(); | |
| 867 | |
| 868 NegotiateAuthContext * neg = static_cast<NegotiateAuthContext *>(context); | |
| 869 if (neg) { | |
| 870 const size_t max_steps = 10; | |
| 871 if (++neg->steps >= max_steps) { | |
| 872 LOG(WARNING) << "AsyncHttpsProxySocket::Authenticate(Negotiate) too many
retries"; | |
| 873 return HAR_ERROR; | |
| 874 } | |
| 875 steps = neg->steps; | |
| 876 | |
| 877 std::string challenge, decoded_challenge; | |
| 878 if (HttpHasNthAttribute(args, 1, &challenge, nullptr) && | |
| 879 Base64::Decode(challenge, Base64::DO_STRICT, &decoded_challenge, | |
| 880 nullptr)) { | |
| 881 SecBuffer in_sec; | |
| 882 in_sec.pvBuffer = const_cast<char *>(decoded_challenge.data()); | |
| 883 in_sec.cbBuffer = static_cast<unsigned long>(decoded_challenge.size())
; | |
| 884 in_sec.BufferType = SECBUFFER_TOKEN; | |
| 885 | |
| 886 SecBufferDesc in_buf_desc; | |
| 887 in_buf_desc.ulVersion = 0; | |
| 888 in_buf_desc.cBuffers = 1; | |
| 889 in_buf_desc.pBuffers = &in_sec; | |
| 890 | |
| 891 ret = InitializeSecurityContextA(&neg->cred, &neg->ctx, spn, flags, 0, S
ECURITY_NATIVE_DREP, &in_buf_desc, 0, &neg->ctx, &out_buf_desc, &ret_flags, &lif
etime); | |
| 892 //LOG(INFO) << "$$$ InitializeSecurityContext @ " << TimeSince(now); | |
| 893 if (FAILED(ret)) { | |
| 894 LOG(LS_ERROR) << "InitializeSecurityContext returned: " | |
| 895 << ErrorName(ret, SECURITY_ERRORS); | |
| 896 return HAR_ERROR; | |
| 897 } | |
| 898 } else if (neg->specified_credentials) { | |
| 899 // Try again with default credentials | |
| 900 specify_credentials = false; | |
| 901 delete context; | |
| 902 context = neg = 0; | |
| 903 } else { | |
| 904 return HAR_CREDENTIALS; | |
| 905 } | |
| 906 } | |
| 907 | |
| 908 if (!neg) { | |
| 909 unsigned char userbuf[256], passbuf[256], domainbuf[16]; | |
| 910 SEC_WINNT_AUTH_IDENTITY_A auth_id, * pauth_id = 0; | |
| 911 if (specify_credentials) { | |
| 912 memset(&auth_id, 0, sizeof(auth_id)); | |
| 913 size_t len = password.GetLength()+1; | |
| 914 char * sensitive = new char[len]; | |
| 915 password.CopyTo(sensitive, true); | |
| 916 std::string::size_type pos = username.find('\\'); | |
| 917 if (pos == std::string::npos) { | |
| 918 auth_id.UserLength = static_cast<unsigned long>( | |
| 919 std::min(sizeof(userbuf) - 1, username.size())); | |
| 920 memcpy(userbuf, username.c_str(), auth_id.UserLength); | |
| 921 userbuf[auth_id.UserLength] = 0; | |
| 922 auth_id.DomainLength = 0; | |
| 923 domainbuf[auth_id.DomainLength] = 0; | |
| 924 auth_id.PasswordLength = static_cast<unsigned long>( | |
| 925 std::min(sizeof(passbuf) - 1, password.GetLength())); | |
| 926 memcpy(passbuf, sensitive, auth_id.PasswordLength); | |
| 927 passbuf[auth_id.PasswordLength] = 0; | |
| 928 } else { | |
| 929 auth_id.UserLength = static_cast<unsigned long>( | |
| 930 std::min(sizeof(userbuf) - 1, username.size() - pos - 1)); | |
| 931 memcpy(userbuf, username.c_str() + pos + 1, auth_id.UserLength); | |
| 932 userbuf[auth_id.UserLength] = 0; | |
| 933 auth_id.DomainLength = | |
| 934 static_cast<unsigned long>(std::min(sizeof(domainbuf) - 1, pos)); | |
| 935 memcpy(domainbuf, username.c_str(), auth_id.DomainLength); | |
| 936 domainbuf[auth_id.DomainLength] = 0; | |
| 937 auth_id.PasswordLength = static_cast<unsigned long>( | |
| 938 std::min(sizeof(passbuf) - 1, password.GetLength())); | |
| 939 memcpy(passbuf, sensitive, auth_id.PasswordLength); | |
| 940 passbuf[auth_id.PasswordLength] = 0; | |
| 941 } | |
| 942 memset(sensitive, 0, len); | |
| 943 delete [] sensitive; | |
| 944 auth_id.User = userbuf; | |
| 945 auth_id.Domain = domainbuf; | |
| 946 auth_id.Password = passbuf; | |
| 947 auth_id.Flags = SEC_WINNT_AUTH_IDENTITY_ANSI; | |
| 948 pauth_id = &auth_id; | |
| 949 LOG(LS_VERBOSE) << "Negotiate protocol: Using specified credentials"; | |
| 950 } else { | |
| 951 LOG(LS_VERBOSE) << "Negotiate protocol: Using default credentials"; | |
| 952 } | |
| 953 | |
| 954 CredHandle cred; | |
| 955 ret = AcquireCredentialsHandleA( | |
| 956 0, const_cast<char*>(want_negotiate ? NEGOSSP_NAME_A : NTLMSP_NAME_A), | |
| 957 SECPKG_CRED_OUTBOUND, 0, pauth_id, 0, 0, &cred, &lifetime); | |
| 958 //LOG(INFO) << "$$$ AcquireCredentialsHandle @ " << TimeSince(now); | |
| 959 if (ret != SEC_E_OK) { | |
| 960 LOG(LS_ERROR) << "AcquireCredentialsHandle error: " | |
| 961 << ErrorName(ret, SECURITY_ERRORS); | |
| 962 return HAR_IGNORE; | |
| 963 } | |
| 964 | |
| 965 //CSecBufferBundle<5, CSecBufferBase::FreeSSPI> sb_out; | |
| 966 | |
| 967 CtxtHandle ctx; | |
| 968 ret = InitializeSecurityContextA(&cred, 0, spn, flags, 0, SECURITY_NATIVE_
DREP, 0, 0, &ctx, &out_buf_desc, &ret_flags, &lifetime); | |
| 969 //LOG(INFO) << "$$$ InitializeSecurityContext @ " << TimeSince(now); | |
| 970 if (FAILED(ret)) { | |
| 971 LOG(LS_ERROR) << "InitializeSecurityContext returned: " | |
| 972 << ErrorName(ret, SECURITY_ERRORS); | |
| 973 FreeCredentialsHandle(&cred); | |
| 974 return HAR_IGNORE; | |
| 975 } | |
| 976 | |
| 977 RTC_DCHECK(!context); | |
| 978 context = neg = new NegotiateAuthContext(auth_method, cred, ctx); | |
| 979 neg->specified_credentials = specify_credentials; | |
| 980 neg->steps = steps; | |
| 981 } | |
| 982 | |
| 983 if ((ret == SEC_I_COMPLETE_NEEDED) || (ret == SEC_I_COMPLETE_AND_CONTINUE))
{ | |
| 984 ret = CompleteAuthToken(&neg->ctx, &out_buf_desc); | |
| 985 //LOG(INFO) << "$$$ CompleteAuthToken @ " << TimeSince(now); | |
| 986 LOG(LS_VERBOSE) << "CompleteAuthToken returned: " | |
| 987 << ErrorName(ret, SECURITY_ERRORS); | |
| 988 if (FAILED(ret)) { | |
| 989 return HAR_ERROR; | |
| 990 } | |
| 991 } | |
| 992 | |
| 993 //LOG(INFO) << "$$$ NEGOTIATE took " << TimeSince(now) << "ms"; | |
| 994 | |
| 995 std::string decoded(out_buf, out_buf + out_sec.cbBuffer); | |
| 996 response = auth_method; | |
| 997 response.append(" "); | |
| 998 response.append(Base64::Encode(decoded)); | |
| 999 return HAR_RESPONSE; | |
| 1000 } | |
| 1001 #endif | |
| 1002 #endif // WEBRTC_WIN | |
| 1003 | |
| 1004 return HAR_IGNORE; | |
| 1005 } | |
| 1006 | |
| 1007 ////////////////////////////////////////////////////////////////////// | |
| 1008 | |
| 1009 } // namespace rtc | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2731673002:
Removing HTTPS and SOCKS proxy server code. (Closed)
