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| 1 // Copyright 2007-2010 Google Inc. | |
| 2 // | |
| 3 // Licensed under the Apache License, Version 2.0 (the "License"); | |
| 4 // you may not use this file except in compliance with the License. | |
| 5 // You may obtain a copy of the License at | |
| 6 // | |
| 7 // http://www.apache.org/licenses/LICENSE-2.0 | |
| 8 // | |
| 9 // Unless required by applicable law or agreed to in writing, software | |
| 10 // distributed under the License is distributed on an "AS IS" BASIS, | |
| 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 12 // See the License for the specific language governing permissions and | |
| 13 // limitations under the License. | |
| 14 // ======================================================================== | |
| 15 | |
| 16 #include "omaha/net/network_request_impl.h" | |
| 17 #include <limits.h> | |
| 18 #include <atlsecurity.h> | |
| 19 #include <algorithm> | |
| 20 #include <cctype> | |
| 21 #include <functional> | |
| 22 #include <vector> | |
| 23 #include "base/basictypes.h" | |
| 24 #include "omaha/base/const_addresses.h" | |
| 25 #include "omaha/base/constants.h" | |
| 26 #include "omaha/base/debug.h" | |
| 27 #include "omaha/base/error.h" | |
| 28 #include "omaha/base/logging.h" | |
| 29 #include "omaha/base/safe_format.h" | |
| 30 #include "omaha/base/scoped_any.h" | |
| 31 #include "omaha/base/string.h" | |
| 32 #include "omaha/base/time.h" | |
| 33 #include "omaha/net/http_client.h" | |
| 34 #include "omaha/net/net_utils.h" | |
| 35 #include "omaha/net/network_config.h" | |
| 36 | |
| 37 namespace omaha { | |
| 38 | |
| 39 namespace detail { | |
| 40 | |
| 41 // Returns the user sid corresponding to the token. This function is only used | |
| 42 // for logging purposes. | |
| 43 CString GetTokenUser(HANDLE token) { | |
| 44 CAccessToken access_token; | |
| 45 access_token.Attach(token); | |
| 46 CSid sid; | |
| 47 access_token.GetUser(&sid); | |
| 48 access_token.Detach(); | |
| 49 return sid.Sid(); | |
| 50 } | |
| 51 | |
| 52 // Logs bytes from the beginning of the file. Non-printable bytes are | |
| 53 // replaced with '.'. | |
| 54 void LogFileBytes(const CString& filename, size_t num_bytes) { | |
| 55 scoped_hfile file(::CreateFile(filename, | |
| 56 GENERIC_READ, | |
| 57 FILE_SHARE_READ, | |
| 58 NULL, | |
| 59 OPEN_EXISTING, | |
| 60 FILE_ATTRIBUTE_NORMAL, | |
| 61 NULL)); | |
| 62 std::vector<char> bytes(num_bytes); | |
| 63 DWORD bytes_read(0); | |
| 64 if (file) { | |
| 65 ::ReadFile(get(file), &bytes.front(), bytes.size(), &bytes_read, NULL); | |
| 66 } | |
| 67 bytes.resize(bytes_read); | |
| 68 replace_if(bytes.begin(), bytes.end(), std::not1(std::ptr_fun(isprint)), '.'); | |
| 69 bytes.push_back('\0'); | |
| 70 NET_LOG(L3, (_T("[file bytes: %hs]"), &bytes.front())); | |
| 71 } | |
| 72 | |
| 73 NetworkRequestImpl::NetworkRequestImpl( | |
| 74 const NetworkConfig::Session& network_session) | |
| 75 : cur_http_request_(NULL), | |
| 76 cur_proxy_config_(NULL), | |
| 77 cur_retry_count_(0), | |
| 78 last_hr_(S_OK), | |
| 79 last_http_status_code_(0), | |
| 80 http_status_code_(0), | |
| 81 proxy_auth_config_(NULL, CString()), | |
| 82 num_retries_(0), | |
| 83 low_priority_(false), | |
| 84 time_between_retries_ms_(kDefaultTimeBetweenRetriesMs), | |
| 85 callback_(NULL), | |
| 86 request_buffer_(NULL), | |
| 87 request_buffer_length_(0), | |
| 88 response_(NULL), | |
| 89 network_session_(network_session), | |
| 90 is_canceled_(false), | |
| 91 preserve_protocol_(false) { | |
| 92 // NetworkConfig::Initialize must be called before using NetworkRequest. | |
| 93 // If Winhttp cannot be loaded, this handle will be NULL. | |
| 94 if (!network_session.session_handle) { | |
| 95 NET_LOG(LW, (_T("[NetworkRequestImpl: session_handle is NULL.]"))); | |
| 96 } | |
| 97 | |
| 98 // Create a manual reset event to wait on during retry periods. | |
| 99 // The event is signaled by NetworkRequestImpl::Cancel, to break out of | |
| 100 // the retry loop and return control to the caller. | |
| 101 reset(event_cancel_, ::CreateEvent(NULL, true, false, NULL)); | |
| 102 ASSERT1(event_cancel_); | |
| 103 | |
| 104 const CString mid(NetworkConfig::GetMID()); | |
| 105 if (!mid.IsEmpty()) { | |
| 106 AddHeader(kHeaderXMID, mid); | |
| 107 } | |
| 108 } | |
| 109 | |
| 110 NetworkRequestImpl::~NetworkRequestImpl() { | |
| 111 for (size_t i = 0; i != http_request_chain_.size(); ++i) { | |
| 112 delete http_request_chain_[i]; | |
| 113 } | |
| 114 } | |
| 115 | |
| 116 void NetworkRequestImpl::Reset() { | |
| 117 if (response_) { | |
| 118 response_->clear(); | |
| 119 } | |
| 120 response_headers_.Empty(); | |
| 121 http_status_code_ = 0; | |
| 122 cur_http_request_ = NULL; | |
| 123 cur_proxy_config_ = NULL; | |
| 124 cur_retry_count_ = 0; | |
| 125 last_hr_ = S_OK; | |
| 126 last_http_status_code_ = 0; | |
| 127 } | |
| 128 | |
| 129 HRESULT NetworkRequestImpl::Close() { | |
| 130 HRESULT hr = S_OK; | |
| 131 for (size_t i = 0; i != http_request_chain_.size(); ++i) { | |
| 132 hr = http_request_chain_[i]->Close(); | |
| 133 } | |
| 134 return hr; | |
| 135 } | |
| 136 | |
| 137 HRESULT NetworkRequestImpl::Cancel() { | |
| 138 NET_LOG(L3, (_T("[NetworkRequestImpl::Cancel]"))); | |
| 139 HRESULT hr = S_OK; | |
| 140 ::InterlockedExchange(&is_canceled_, true); | |
| 141 if (event_cancel_) { | |
| 142 hr = ::SetEvent(get(event_cancel_)) ? S_OK : HRESULTFromLastError(); | |
| 143 } | |
| 144 for (size_t i = 0; i != http_request_chain_.size(); ++i) { | |
| 145 hr = http_request_chain_[i]->Cancel(); | |
| 146 } | |
| 147 return hr; | |
| 148 } | |
| 149 | |
| 150 void NetworkRequestImpl::AddHttpRequest(HttpRequestInterface* http_request) { | |
| 151 ASSERT1(http_request); | |
| 152 http_request_chain_.push_back(http_request); | |
| 153 } | |
| 154 | |
| 155 HRESULT NetworkRequestImpl::Post(const CString& url, | |
| 156 const void* buffer, | |
| 157 size_t length, | |
| 158 std::vector<uint8>* response) { | |
| 159 ASSERT1(response); | |
| 160 url_ = url; | |
| 161 request_buffer_ = buffer; | |
| 162 request_buffer_length_ = length; | |
| 163 response_ = response; | |
| 164 return DoSendWithRetries(); | |
| 165 } | |
| 166 | |
| 167 HRESULT NetworkRequestImpl::Get(const CString& url, | |
| 168 std::vector<uint8>* response) { | |
| 169 ASSERT1(response); | |
| 170 url_ = url; | |
| 171 request_buffer_ = NULL; | |
| 172 request_buffer_length_ = 0; | |
| 173 response_ = response; | |
| 174 return DoSendWithRetries(); | |
| 175 } | |
| 176 | |
| 177 HRESULT NetworkRequestImpl::DownloadFile(const CString& url, | |
| 178 const CString& filename) { | |
| 179 url_ = url; | |
| 180 filename_ = filename; | |
| 181 request_buffer_ = NULL; | |
| 182 request_buffer_length_ = 0; | |
| 183 response_ = NULL; | |
| 184 return DoSendWithRetries(); | |
| 185 } | |
| 186 | |
| 187 HRESULT NetworkRequestImpl::Pause() { | |
| 188 NET_LOG(L3, (_T("[NetworkRequestImpl::Pause]"))); | |
| 189 HRESULT hr = S_OK; | |
| 190 | |
| 191 for (size_t i = 0; i != http_request_chain_.size(); ++i) { | |
| 192 HRESULT hr2 = http_request_chain_[i]->Pause(); | |
| 193 | |
| 194 // Only overwrite hr if it doesn't have useful error information. | |
| 195 if (SUCCEEDED(hr)) { | |
| 196 hr = hr2; | |
| 197 } | |
| 198 } | |
| 199 return hr; | |
| 200 } | |
| 201 | |
| 202 HRESULT NetworkRequestImpl::Resume() { | |
| 203 NET_LOG(L3, (_T("[NetworkRequestImpl::Pause]"))); | |
| 204 HRESULT hr = S_OK; | |
| 205 | |
| 206 for (size_t i = 0; i != http_request_chain_.size(); ++i) { | |
| 207 HRESULT hr2 = http_request_chain_[i]->Resume(); | |
| 208 | |
| 209 // Only overwrite hr if it doesn't have useful error information. | |
| 210 if (SUCCEEDED(hr)) { | |
| 211 hr = hr2; | |
| 212 } | |
| 213 } | |
| 214 return hr; | |
| 215 } | |
| 216 | |
| 217 HRESULT NetworkRequestImpl::DoSendWithRetries() { | |
| 218 ASSERT1(num_retries_ >= 0); | |
| 219 ASSERT1(response_ || !filename_.IsEmpty()); | |
| 220 | |
| 221 Reset(); | |
| 222 | |
| 223 int http_status_code(0); | |
| 224 CString response_headers; | |
| 225 std::vector<uint8> response; | |
| 226 | |
| 227 SafeCStringAppendFormat(&trace_, _T("Url=%s\r\n"), url_); | |
| 228 | |
| 229 HRESULT hr = S_OK; | |
| 230 int wait_interval_ms = time_between_retries_ms_; | |
| 231 for (cur_retry_count_ = 0; | |
| 232 cur_retry_count_ < 1 + num_retries_; | |
| 233 ++cur_retry_count_) { | |
| 234 if (IsHandleSignaled(get(event_cancel_))) { | |
| 235 ASSERT1(is_canceled_); | |
| 236 | |
| 237 // There is no state to be set when the request is canceled. | |
| 238 return GOOPDATE_E_CANCELLED; | |
| 239 } | |
| 240 | |
| 241 // Wait before retrying if there are retries to be done. | |
| 242 if (cur_retry_count_ > 0) { | |
| 243 if (callback_) { | |
| 244 const time64 next_retry_time = GetCurrent100NSTime() + | |
| 245 wait_interval_ms * kMillisecsTo100ns; | |
| 246 callback_->OnRequestRetryScheduled(next_retry_time); | |
| 247 } | |
| 248 | |
| 249 NET_LOG(L3, (_T("[wait %d ms]"), wait_interval_ms)); | |
| 250 VERIFY1(::WaitForSingleObject(get(event_cancel_), | |
| 251 wait_interval_ms) != WAIT_FAILED); | |
| 252 | |
| 253 if (callback_) { | |
| 254 callback_->OnRequestBegin(); | |
| 255 } | |
| 256 | |
| 257 // Compute the next wait interval and check for multiplication overflow. | |
| 258 if (wait_interval_ms > INT_MAX / kTimeBetweenRetriesMultiplier) { | |
| 259 ASSERT1(false); | |
| 260 hr = HRESULT_FROM_WIN32(ERROR_ARITHMETIC_OVERFLOW); | |
| 261 break; | |
| 262 } | |
| 263 wait_interval_ms *= kTimeBetweenRetriesMultiplier; | |
| 264 } | |
| 265 | |
| 266 DetectProxyConfiguration(&proxy_configurations_); | |
| 267 ASSERT1(!proxy_configurations_.empty()); | |
| 268 OPT_LOG(L2, (_T("[detected configurations][\r\n%s]"), | |
| 269 NetworkConfig::ToString(proxy_configurations_))); | |
| 270 | |
| 271 hr = DoSend(&http_status_code, &response_headers, &response); | |
| 272 HttpClient::StatusCodeClass status_code_class = | |
| 273 HttpClient::GetStatusCodeClass(http_status_code); | |
| 274 if (SUCCEEDED(hr) || | |
| 275 hr == GOOPDATE_E_CANCELLED || | |
| 276 status_code_class == HttpClient::STATUS_CODE_CLIENT_ERROR) { | |
| 277 break; | |
| 278 } | |
| 279 } | |
| 280 | |
| 281 // Update the object state with the local values. | |
| 282 http_status_code_ = http_status_code; | |
| 283 response_headers_ = response_headers; | |
| 284 if (response_) { | |
| 285 response_->swap(response); | |
| 286 } | |
| 287 | |
| 288 // Avoid returning generic errors from the network stack. | |
| 289 ASSERT1(hr != E_FAIL); | |
| 290 return hr; | |
| 291 } | |
| 292 | |
| 293 HRESULT NetworkRequestImpl::DoSend(int* http_status_code, | |
| 294 CString* response_headers, | |
| 295 std::vector<uint8>* response) const { | |
| 296 ASSERT1(http_status_code); | |
| 297 ASSERT1(response_headers); | |
| 298 ASSERT1(response); | |
| 299 | |
| 300 OPT_LOG(L3, (_T("[Send][url=%s][request=%s][filename=%s]"), | |
| 301 url_, | |
| 302 BufferToPrintableString(request_buffer_, request_buffer_length_), | |
| 303 filename_)); | |
| 304 | |
| 305 // Cache the values corresponding to the error encountered by the first | |
| 306 // configuration, which is the preferred configuration. | |
| 307 HRESULT error_hr = S_OK; | |
| 308 int error_http_status_code = 0; | |
| 309 CString error_response_headers; | |
| 310 std::vector<uint8> error_response; | |
| 311 | |
| 312 // Tries out all the available configurations until one of them succeeds. | |
| 313 // TODO(omaha): remember the last good configuration and prefer that for | |
| 314 // future requests. | |
| 315 HRESULT hr = S_OK; | |
| 316 ASSERT1(!proxy_configurations_.empty()); | |
| 317 for (size_t i = 0; i != proxy_configurations_.size(); ++i) { | |
| 318 cur_proxy_config_ = &proxy_configurations_[i]; | |
| 319 hr = DoSendWithConfig(http_status_code, response_headers, response); | |
| 320 if (i == 0 && FAILED(hr)) { | |
| 321 error_hr = hr; | |
| 322 error_http_status_code = *http_status_code; | |
| 323 error_response_headers = *response_headers; | |
| 324 error_response.swap(*response); | |
| 325 } | |
| 326 | |
| 327 if (SUCCEEDED(hr) || | |
| 328 hr == GOOPDATE_E_CANCELLED || | |
| 329 hr == CI_E_BITS_DISABLED || | |
| 330 *http_status_code == HTTP_STATUS_NOT_FOUND) { | |
| 331 break; | |
| 332 } | |
| 333 } | |
| 334 | |
| 335 // There are only four possible outcomes: success, cancel, BITS disabled | |
| 336 // and an error other than these. | |
| 337 HRESULT result = S_OK; | |
| 338 if (SUCCEEDED(hr) || | |
| 339 hr == GOOPDATE_E_CANCELLED || | |
| 340 hr == CI_E_BITS_DISABLED) { | |
| 341 result = hr; | |
| 342 } else { | |
| 343 // In case of errors, log the error and the response returned by the first | |
| 344 // network configuration. | |
| 345 result = error_hr; | |
| 346 *http_status_code = error_http_status_code; | |
| 347 *response_headers = error_response_headers; | |
| 348 response->swap(error_response); | |
| 349 } | |
| 350 | |
| 351 OPT_LOG(L3, (_T("[Send response received][result 0x%x][status code %d][%s]"), | |
| 352 result, *http_status_code, VectorToPrintableString(*response))); | |
| 353 | |
| 354 #ifdef DEBUG | |
| 355 if (!filename_.IsEmpty()) { | |
| 356 const size_t kNumBytes = 8196; // 8 kb. | |
| 357 LogFileBytes(filename_, kNumBytes); | |
| 358 } | |
| 359 #endif | |
| 360 | |
| 361 return result; | |
| 362 } | |
| 363 | |
| 364 HRESULT NetworkRequestImpl::DoSendWithConfig( | |
| 365 int* http_status_code, | |
| 366 CString* response_headers, | |
| 367 std::vector<uint8>* response) const { | |
| 368 ASSERT1(response_headers); | |
| 369 ASSERT1(response); | |
| 370 ASSERT1(http_status_code); | |
| 371 | |
| 372 bool first_error_from_http_request_saved = false; | |
| 373 HRESULT error_hr = S_OK; | |
| 374 int error_http_status_code = 0; | |
| 375 CString error_response_headers; | |
| 376 std::vector<uint8> error_response; | |
| 377 | |
| 378 ASSERT1(cur_proxy_config_); | |
| 379 | |
| 380 CString msg; | |
| 381 SafeCStringFormat(&msg, _T("Trying config: %s"), | |
| 382 NetworkConfig::ToString(*cur_proxy_config_)); | |
| 383 NET_LOG(L3, (_T("[%s]"), msg)); | |
| 384 SafeCStringAppendFormat(&trace_, _T("%s.\r\n"), msg); | |
| 385 | |
| 386 HRESULT hr = S_OK; | |
| 387 ASSERT1(!http_request_chain_.empty()); | |
| 388 for (size_t i = 0; i != http_request_chain_.size(); ++i) { | |
| 389 cur_http_request_ = http_request_chain_[i]; | |
| 390 | |
| 391 CString msg; | |
| 392 SafeCStringFormat(&msg, _T("trying %s"), cur_http_request_->ToString()); | |
| 393 NET_LOG(L3, (_T("[%s]"), msg)); | |
| 394 SafeCStringAppendFormat(&trace_, _T("%s.\r\n"), msg); | |
| 395 | |
| 396 hr = DoSendHttpRequest(http_status_code, response_headers, response); | |
| 397 | |
| 398 SafeCStringFormat(&msg, | |
| 399 _T("Send request returned 0x%08x. Http status code %d"), | |
| 400 hr, *http_status_code); | |
| 401 NET_LOG(L3, (_T("[%s]"), msg)); | |
| 402 SafeCStringAppendFormat(&trace_, _T("%s.\r\n"), msg); | |
| 403 | |
| 404 if (!first_error_from_http_request_saved && FAILED(hr) && | |
| 405 hr != CI_E_BITS_DISABLED) { | |
| 406 error_hr = hr; | |
| 407 error_http_status_code = cur_http_request_->GetHttpStatusCode(); | |
| 408 error_response_headers = cur_http_request_->GetResponseHeaders(); | |
| 409 cur_http_request_->GetResponse().swap(error_response); | |
| 410 first_error_from_http_request_saved = true; | |
| 411 } | |
| 412 | |
| 413 // The chain traversal stops when the request is successful or | |
| 414 // it is canceled, or the status code is 404. | |
| 415 // In the case of 404 response, all HttpRequests are likely to return | |
| 416 // the same 404 response. | |
| 417 if (SUCCEEDED(hr) || | |
| 418 hr == GOOPDATE_E_CANCELLED || | |
| 419 *http_status_code == HTTP_STATUS_NOT_FOUND) { | |
| 420 break; | |
| 421 } | |
| 422 } | |
| 423 | |
| 424 // There are only three possible outcomes: success, cancel, and an error | |
| 425 // other than cancel. | |
| 426 HRESULT result = S_OK; | |
| 427 if (SUCCEEDED(hr) || hr == GOOPDATE_E_CANCELLED) { | |
| 428 result = hr; | |
| 429 } else { | |
| 430 ASSERT1(first_error_from_http_request_saved); | |
| 431 if (first_error_from_http_request_saved) { | |
| 432 // In case of errors, log the error and the response returned by the first | |
| 433 // active http request object. | |
| 434 result = error_hr; | |
| 435 *http_status_code = error_http_status_code; | |
| 436 *response_headers = error_response_headers; | |
| 437 response->swap(error_response); | |
| 438 } else { | |
| 439 ASSERT1(false); // BITS is the onlay channel and is disabled. | |
| 440 NET_LOG(LE, (_T("Possiblly no viable network channel is available."))); | |
| 441 result = E_UNEXPECTED; | |
| 442 } | |
| 443 } | |
| 444 | |
| 445 if (SUCCEEDED(hr)) { | |
| 446 NetworkConfig::SaveProxyConfig(*cur_proxy_config_); | |
| 447 } | |
| 448 return result; | |
| 449 } | |
| 450 | |
| 451 HRESULT NetworkRequestImpl::DoSendHttpRequest( | |
| 452 int* http_status_code, | |
| 453 CString* response_headers, | |
| 454 std::vector<uint8>* response) const { | |
| 455 ASSERT1(response_headers); | |
| 456 ASSERT1(response); | |
| 457 ASSERT1(http_status_code); | |
| 458 | |
| 459 ASSERT1(cur_http_request_); | |
| 460 | |
| 461 // Set common HttpRequestInterface properties. | |
| 462 cur_http_request_->set_session_handle(network_session_.session_handle); | |
| 463 cur_http_request_->set_request_buffer(request_buffer_, | |
| 464 request_buffer_length_); | |
| 465 cur_http_request_->set_url(url_); | |
| 466 cur_http_request_->set_filename(filename_); | |
| 467 cur_http_request_->set_low_priority(low_priority_); | |
| 468 cur_http_request_->set_callback(callback_); | |
| 469 cur_http_request_->set_additional_headers(BuildPerRequestHeaders()); | |
| 470 cur_http_request_->set_proxy_configuration(*cur_proxy_config_); | |
| 471 cur_http_request_->set_preserve_protocol(preserve_protocol_); | |
| 472 cur_http_request_->set_proxy_auth_config(proxy_auth_config_); | |
| 473 | |
| 474 if (IsHandleSignaled(get(event_cancel_))) { | |
| 475 return GOOPDATE_E_CANCELLED; | |
| 476 } | |
| 477 | |
| 478 if (callback_) { | |
| 479 callback_->OnRequestBegin(); | |
| 480 } | |
| 481 | |
| 482 // The algorithm is very rough meaning it does not look at the error | |
| 483 // returned by the Send and it blindly retries the call. For some errors | |
| 484 // it may not make sense to retry at all, for example, let's say the | |
| 485 // error is ERROR_DISK_FULL. | |
| 486 NET_LOG(L3, (_T("[%s]"), url_)); | |
| 487 last_hr_ = cur_http_request_->Send(); | |
| 488 NET_LOG(L3, (_T("[HttpRequestInterface::Send returned 0x%08x]"), last_hr_)); | |
| 489 | |
| 490 if (last_hr_ == GOOPDATE_E_CANCELLED) { | |
| 491 return last_hr_; | |
| 492 } | |
| 493 | |
| 494 last_http_status_code_ = cur_http_request_->GetHttpStatusCode(); | |
| 495 | |
| 496 *http_status_code = cur_http_request_->GetHttpStatusCode(); | |
| 497 *response_headers = cur_http_request_->GetResponseHeaders(); | |
| 498 cur_http_request_->GetResponse().swap(*response); | |
| 499 | |
| 500 // Check if the computer is connected to the network. | |
| 501 if (FAILED(last_hr_)) { | |
| 502 last_hr_ = IsMachineConnectedToNetwork() ? last_hr_ : GOOPDATE_E_NO_NETWORK; | |
| 503 return last_hr_; | |
| 504 } | |
| 505 | |
| 506 // Status code must be available if the http request is successful. This | |
| 507 // is the contract that http requests objects in the fallback chain must | |
| 508 // implement. | |
| 509 ASSERT1(SUCCEEDED(last_hr_) && *http_status_code); | |
| 510 ASSERT1(HTTP_STATUS_FIRST <= *http_status_code && | |
| 511 *http_status_code <= HTTP_STATUS_LAST); | |
| 512 | |
| 513 switch (*http_status_code) { | |
| 514 case HTTP_STATUS_OK: // 200 | |
| 515 case HTTP_STATUS_NO_CONTENT: // 204 | |
| 516 case HTTP_STATUS_PARTIAL_CONTENT: // 206 | |
| 517 case HTTP_STATUS_NOT_MODIFIED: // 304 | |
| 518 last_hr_ = S_OK; | |
| 519 break; | |
| 520 | |
| 521 default: | |
| 522 last_hr_ = HRESULTFromHttpStatusCode(*http_status_code); | |
| 523 break; | |
| 524 } | |
| 525 return last_hr_; | |
| 526 } | |
| 527 | |
| 528 CString NetworkRequestImpl::BuildPerRequestHeaders() const { | |
| 529 CString headers(additional_headers_); | |
| 530 | |
| 531 const CString& user_agent(cur_http_request_->user_agent()); | |
| 532 if (!user_agent.IsEmpty()) { | |
| 533 SafeCStringAppendFormat(&headers, _T("%s: %s\r\n"), | |
| 534 kHeaderUserAgent, user_agent); | |
| 535 } | |
| 536 | |
| 537 SafeCStringAppendFormat(&headers, _T("%s: 0x%x\r\n"), | |
| 538 kHeaderXLastHR, last_hr_); | |
| 539 SafeCStringAppendFormat(&headers, | |
| 540 _T("%s: %d\r\n"), | |
| 541 kHeaderXLastHTTPStatusCode, last_http_status_code_); | |
| 542 | |
| 543 SafeCStringAppendFormat(&headers, _T("%s: %d\r\n"), | |
| 544 kHeaderXRetryCount, cur_retry_count_); | |
| 545 | |
| 546 return headers; | |
| 547 } | |
| 548 | |
| 549 void NetworkRequestImpl::AddHeader(const TCHAR* name, const TCHAR* value) { | |
| 550 ASSERT1(name && *name); | |
| 551 ASSERT1(value && *value); | |
| 552 if (_tcsicmp(additional_headers_, name) == 0) { | |
| 553 return; | |
| 554 } | |
| 555 // Documentation specifies each header must be terminated by \r\n. | |
| 556 SafeCStringAppendFormat(&additional_headers_, _T("%s: %s\r\n"), name, value); | |
| 557 } | |
| 558 | |
| 559 HRESULT NetworkRequestImpl::QueryHeadersString(uint32 info_level, | |
| 560 const TCHAR* name, | |
| 561 CString* value) { | |
| 562 // Name can be null when the info_level specifies the header to query. | |
| 563 ASSERT1(value); | |
| 564 if (!cur_http_request_) { | |
| 565 return E_UNEXPECTED; | |
| 566 } | |
| 567 return cur_http_request_->QueryHeadersString(info_level, name, value); | |
| 568 } | |
| 569 | |
| 570 void NetworkRequestImpl::DetectProxyConfiguration( | |
| 571 std::vector<ProxyConfig>* proxy_configurations) const { | |
| 572 ASSERT1(proxy_configurations); | |
| 573 | |
| 574 proxy_configurations->clear(); | |
| 575 | |
| 576 // Use this object's configuration override if one is set. | |
| 577 if (proxy_configuration_.get()) { | |
| 578 proxy_configurations->push_back(*proxy_configuration_); | |
| 579 return; | |
| 580 } | |
| 581 | |
| 582 // Use the global configuration override if the network config has one. | |
| 583 NetworkConfig* network_config = NULL; | |
| 584 NetworkConfigManager& network_manager = NetworkConfigManager::Instance(); | |
| 585 HRESULT hr = network_manager.GetUserNetworkConfig(&network_config); | |
| 586 if (SUCCEEDED(hr)) { | |
| 587 ProxyConfig config; | |
| 588 if (SUCCEEDED(network_config->GetConfigurationOverride(&config))) { | |
| 589 proxy_configurations->push_back(config); | |
| 590 return; | |
| 591 } | |
| 592 | |
| 593 // Detect the configurations if no configuration override is specified. | |
| 594 hr = network_config->Detect(); | |
| 595 if (SUCCEEDED(hr)) { | |
| 596 network_config->GetConfigurations().swap(*proxy_configurations); | |
| 597 } else { | |
| 598 NET_LOG(LW, (_T("[failed to detect net config][0x%08x]"), hr)); | |
| 599 } | |
| 600 | |
| 601 network_config->AppendLastKnownGoodProxyConfig(proxy_configurations); | |
| 602 } else { | |
| 603 NET_LOG(LW, (_T("[failed to get network config instance][0x%08x]"), hr)); | |
| 604 } | |
| 605 | |
| 606 NetworkConfig::AppendStaticProxyConfigs(proxy_configurations); | |
| 607 NetworkConfig::SortProxies(proxy_configurations); | |
| 608 | |
| 609 // Some of the configurations might occur multiple times. To avoid retrying | |
| 610 // the same configuration over, try to remove duplicates while preserving | |
| 611 // the order of existing configurations. | |
| 612 NetworkConfig::RemoveDuplicates(proxy_configurations); | |
| 613 ASSERT1(!proxy_configurations->empty()); | |
| 614 } | |
| 615 | |
| 616 HRESULT PostRequest(NetworkRequest* network_request, | |
| 617 bool fallback_to_https, | |
| 618 const CString& url, | |
| 619 const CString& request_string, | |
| 620 std::vector<uint8>* response) { | |
| 621 ASSERT1(network_request); | |
| 622 ASSERT1(response); | |
| 623 | |
| 624 const CStringA utf8_request_string(WideToUtf8(request_string)); | |
| 625 HRESULT hr = network_request->PostUtf8String(url, | |
| 626 utf8_request_string, | |
| 627 response); | |
| 628 bool is_canceled(hr == GOOPDATE_E_CANCELLED); | |
| 629 if (FAILED(hr) && !is_canceled && fallback_to_https) { | |
| 630 // Replace http with https and resend the request. | |
| 631 if (String_StartsWith(url, kHttpProto, true)) { | |
| 632 CString https_url = url.Mid(_tcslen(kHttpProto)); | |
| 633 https_url.Insert(0, kHttpsProto); | |
| 634 | |
| 635 NET_LOG(L3, (_T("[network request fallback to %s]"), https_url)); | |
| 636 response->clear(); | |
| 637 if (SUCCEEDED(network_request->PostUtf8String(https_url, | |
| 638 utf8_request_string, | |
| 639 response))) { | |
| 640 hr = S_OK; | |
| 641 } | |
| 642 } | |
| 643 } | |
| 644 return hr; | |
| 645 } | |
| 646 | |
| 647 // TODO(omaha): Eliminate this function if no longer a need for it. It's only | |
| 648 // used in NetDiags, and its value has been eliminated since we switched to all | |
| 649 // network functions returning uint8 buffers. | |
| 650 HRESULT GetRequest(NetworkRequest* network_request, | |
| 651 const CString& url, | |
| 652 std::vector<uint8>* response) { | |
| 653 ASSERT1(network_request); | |
| 654 ASSERT1(response); | |
| 655 | |
| 656 return network_request->Get(url, response); | |
| 657 } | |
| 658 | |
| 659 } // namespace detail | |
| 660 | |
| 661 } // namespace omaha | |
| 662 | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 624713003:
Keep only base/extractor.[cc|h]. (Closed)
Base URL: https://chromium.googlesource.com/external/omaha.git@master