The Tor Browser: toolkit/crashreporter/google-breakpad/src/common/windows/http

toolkit/crashreporter/google-breakpad/src/common/windows/http_upload.cc@129ffea94266 (annotated)

toolkit/crashreporter/google-breakpad/src/common/windows/http_upload.cc

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 // Copyright (c) 2006, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 // copyright notice, this list of conditions and the following disclaimer
 // in the documentation and/or other materials provided with the
 // distribution.
 //     * Neither the name of Google Inc. nor the names of its
 // contributors may be used to endorse or promote products derived from
 // this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assert.h>
 // Disable exception handler warnings.
 #pragma warning( disable : 4530 )
 #include <fstream>
 #include "common/windows/string_utils-inl.h"
 #include "common/windows/http_upload.h"
 namespace google_breakpad {
 using std::ifstream;
 using std::ios;
 static const wchar_t kUserAgent[] = L"Breakpad/1.0 (Windows)";
 // Helper class which closes an internet handle when it goes away
 class HTTPUpload::AutoInternetHandle {
  public:
   explicit AutoInternetHandle(HINTERNET handle) : handle_(handle) {}
   ~AutoInternetHandle() {
     if (handle_) {
       InternetCloseHandle(handle_);
     }
   }
   HINTERNET get() { return handle_; }
  private:
   HINTERNET handle_;
 };
 // static
 bool HTTPUpload::SendRequest(const wstring &url,
                              const map<wstring, wstring> &parameters,
                              const wstring &upload_file,
                              const wstring &file_part_name,
                              int *timeout,
                              wstring *response_body,
                              int *response_code) {
   if (response_code) {
     *response_code = 0;
   }
   // TODO(bryner): support non-ASCII parameter names
   if (!CheckParameters(parameters)) {
     return false;
   }
   // Break up the URL and make sure we can handle it
   wchar_t scheme[16], host[256], path[256];
   URL_COMPONENTS components;
   memset(&components, 0, sizeof(components));
   components.dwStructSize = sizeof(components);
   components.lpszScheme = scheme;
   components.dwSchemeLength = sizeof(scheme) / sizeof(scheme[0]);
   components.lpszHostName = host;
   components.dwHostNameLength = sizeof(host) / sizeof(host[0]);
   components.lpszUrlPath = path;
   components.dwUrlPathLength = sizeof(path) / sizeof(path[0]);
   if (!InternetCrackUrl(url.c_str(), static_cast<DWORD>(url.size()),
 , &components)) {
     return false;
   }
   bool secure = false;
   if (wcscmp(scheme, L"https") == 0) {
     secure = true;
   } else if (wcscmp(scheme, L"http") != 0) {
     return false;
   }
   AutoInternetHandle internet(InternetOpen(kUserAgent,
                                            INTERNET_OPEN_TYPE_PRECONFIG,
                                            NULL,  // proxy name
                                            NULL,  // proxy bypass
 ));   // flags
   if (!internet.get()) {
     return false;
   }
   AutoInternetHandle connection(InternetConnect(internet.get(),
                                                 host,
                                                 components.nPort,
                                                 NULL,    // user name
                                                 NULL,    // password
                                                 INTERNET_SERVICE_HTTP,
 ,       // flags
                                                 NULL));  // context
   if (!connection.get()) {
     return false;
   }
   DWORD http_open_flags = secure ? INTERNET_FLAG_SECURE : 0;
   http_open_flags |= INTERNET_FLAG_NO_COOKIES;
   AutoInternetHandle request(HttpOpenRequest(connection.get(),
                                              L"POST",
                                              path,
                                              NULL,    // version
                                              NULL,    // referer
                                              NULL,    // agent type
                                              http_open_flags,
                                              NULL));  // context
   if (!request.get()) {
     return false;
   }
   wstring boundary = GenerateMultipartBoundary();
   wstring content_type_header = GenerateRequestHeader(boundary);
   HttpAddRequestHeaders(request.get(),
                         content_type_header.c_str(),
                         static_cast<DWORD>(-1),
                         HTTP_ADDREQ_FLAG_ADD);
   string request_body;
   if (!GenerateRequestBody(parameters, upload_file,
                            file_part_name, boundary, &request_body)) {
     return false;
   }
   if (timeout) {
     if (!InternetSetOption(request.get(),
                            INTERNET_OPTION_SEND_TIMEOUT,
                            timeout,
                            sizeof(*timeout))) {
       fwprintf(stderr, L"Could not unset send timeout, continuing...\n");
     }
     if (!InternetSetOption(request.get(),
                            INTERNET_OPTION_RECEIVE_TIMEOUT,
                            timeout,
                            sizeof(*timeout))) {
       fwprintf(stderr, L"Could not unset receive timeout, continuing...\n");
     }
   }
   if (!HttpSendRequest(request.get(), NULL, 0,
                        const_cast<char *>(request_body.data()),
                        static_cast<DWORD>(request_body.size()))) {
     return false;
   }
   // The server indicates a successful upload with HTTP status 200.
   wchar_t http_status[4];
   DWORD http_status_size = sizeof(http_status);
   if (!HttpQueryInfo(request.get(), HTTP_QUERY_STATUS_CODE,
                      static_cast<LPVOID>(&http_status), &http_status_size,
 )) {
     return false;
   }
   int http_response = wcstol(http_status, NULL, 10);
   if (response_code) {
     *response_code = http_response;
   }
   bool result = (http_response == 200);
   if (result) {
     result = ReadResponse(request.get(), response_body);
   }
   return result;
 }
 // static
 bool HTTPUpload::ReadResponse(HINTERNET request, wstring *response) {
   bool has_content_length_header = false;
   wchar_t content_length[32];
   DWORD content_length_size = sizeof(content_length);
   DWORD claimed_size = 0;
   string response_body;
   if (HttpQueryInfo(request, HTTP_QUERY_CONTENT_LENGTH,
                     static_cast<LPVOID>(&content_length),
                     &content_length_size, 0)) {
     has_content_length_header = true;
     claimed_size = wcstol(content_length, NULL, 10);
     response_body.reserve(claimed_size);
   }
   DWORD bytes_available;
   DWORD total_read = 0;
   BOOL return_code;
   while (((return_code = InternetQueryDataAvailable(request, &bytes_available,
 , 0)) != 0) && bytes_available > 0) {
     vector<char> response_buffer(bytes_available);
     DWORD size_read;
     return_code = InternetReadFile(request,
                                    &response_buffer[0],
                                    bytes_available, &size_read);
     if (return_code && size_read > 0) {
       total_read += size_read;
       response_body.append(&response_buffer[0], size_read);
     } else {
       break;
     }
   }
   bool succeeded = return_code && (!has_content_length_header ||
                                    (total_read == claimed_size));
   if (succeeded && response) {
     *response = UTF8ToWide(response_body);
   }
   return succeeded;
 }
 // static
 wstring HTTPUpload::GenerateMultipartBoundary() {
   // The boundary has 27 '-' characters followed by 16 hex digits
   static const wchar_t kBoundaryPrefix[] = L"---------------------------";
   static const int kBoundaryLength = 27 + 16 + 1;
   // Generate some random numbers to fill out the boundary
   int r0 = rand();
   int r1 = rand();
   wchar_t temp[kBoundaryLength];
   swprintf(temp, kBoundaryLength, L"%s%08X%08X", kBoundaryPrefix, r0, r1);
   // remove when VC++7.1 is no longer supported
   temp[kBoundaryLength - 1] = L'\0';
   return wstring(temp);
 }
 // static
 wstring HTTPUpload::GenerateRequestHeader(const wstring &boundary) {
   wstring header = L"Content-Type: multipart/form-data; boundary=";
   header += boundary;
   return header;
 }
 // static
 bool HTTPUpload::GenerateRequestBody(const map<wstring, wstring> &parameters,
                                      const wstring &upload_file,
                                      const wstring &file_part_name,
                                      const wstring &boundary,
                                      string *request_body) {
   vector<char> contents;
   if (!GetFileContents(upload_file, &contents)) {
     return false;
   }
   string boundary_str = WideToUTF8(boundary);
   if (boundary_str.empty()) {
     return false;
   }
   request_body->clear();
   // Append each of the parameter pairs as a form-data part
   for (map<wstring, wstring>::const_iterator pos = parameters.begin();
        pos != parameters.end(); ++pos) {
     request_body->append("--" + boundary_str + "\r\n");
     request_body->append("Content-Disposition: form-data; name=\"" +
                          WideToUTF8(pos->first) + "\"\r\n\r\n" +
                          WideToUTF8(pos->second) + "\r\n");
   }
   // Now append the upload file as a binary (octet-stream) part
   string filename_utf8 = WideToUTF8(upload_file);
   if (filename_utf8.empty()) {
     return false;
   }
   string file_part_name_utf8 = WideToUTF8(file_part_name);
   if (file_part_name_utf8.empty()) {
     return false;
   }
   request_body->append("--" + boundary_str + "\r\n");
   request_body->append("Content-Disposition: form-data; "
                        "name=\"" + file_part_name_utf8 + "\"; "
                        "filename=\"" + filename_utf8 + "\"\r\n");
   request_body->append("Content-Type: application/octet-stream\r\n");
   request_body->append("\r\n");
   if (!contents.empty()) {
       request_body->append(&(contents[0]), contents.size());
   }
   request_body->append("\r\n");
   request_body->append("--" + boundary_str + "--\r\n");
   return true;
 }
 // static
 bool HTTPUpload::GetFileContents(const wstring &filename,
                                  vector<char> *contents) {
   // The "open" method on pre-MSVC8 ifstream implementations doesn't accept a
   // wchar_t* filename, so use _wfopen directly in that case.  For VC8 and
   // later, _wfopen has been deprecated in favor of _wfopen_s, which does
   // not exist in earlier versions, so let the ifstream open the file itself.
 #if _MSC_VER >= 1400  // MSVC 2005/8
   ifstream file;
   file.open(filename.c_str(), ios::binary);
 #else  // _MSC_VER >= 1400
   ifstream file(_wfopen(filename.c_str(), L"rb"));
 #endif  // _MSC_VER >= 1400
   if (file.is_open()) {
     file.seekg(0, ios::end);
     std::streamoff length = file.tellg();
     contents->resize(length);
     if (length != 0) {
       file.seekg(0, ios::beg);
       file.read(&((*contents)[0]), length);
     }
     file.close();
     return true;
   }
   return false;
 }
 // static
 wstring HTTPUpload::UTF8ToWide(const string &utf8) {
   if (utf8.length() == 0) {
     return wstring();
   }
   // compute the length of the buffer we'll need
   int charcount = MultiByteToWideChar(CP_UTF8, 0, utf8.c_str(), -1, NULL, 0);
   if (charcount == 0) {
     return wstring();
   }
   // convert
   wchar_t* buf = new wchar_t[charcount];
   MultiByteToWideChar(CP_UTF8, 0, utf8.c_str(), -1, buf, charcount);
   wstring result(buf);
   delete[] buf;
   return result;
 }
 // static
 string HTTPUpload::WideToUTF8(const wstring &wide) {
   if (wide.length() == 0) {
     return string();
   }
   // compute the length of the buffer we'll need
   int charcount = WideCharToMultiByte(CP_UTF8, 0, wide.c_str(), -1,
                                       NULL, 0, NULL, NULL);
   if (charcount == 0) {
     return string();
   }
   // convert
   char *buf = new char[charcount];
   WideCharToMultiByte(CP_UTF8, 0, wide.c_str(), -1, buf, charcount,
                       NULL, NULL);
   string result(buf);
   delete[] buf;
   return result;
 }
 // static
 bool HTTPUpload::CheckParameters(const map<wstring, wstring> &parameters) {
   for (map<wstring, wstring>::const_iterator pos = parameters.begin();
        pos != parameters.end(); ++pos) {
     const wstring &str = pos->first;
     if (str.size() == 0) {
       return false;  // disallow empty parameter names
     }
     for (unsigned int i = 0; i < str.size(); ++i) {
       wchar_t c = str[i];
       if (c < 32 || c == '"' || c > 127) {
         return false;
       }
     }
   }
   return true;
 }
 }  // namespace google_breakpad

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toolkit/crashreporter/google-breakpad/src/common/windows/http_upload.cc@129ffea94266 (annotated)

toolkit/crashreporter/google-breakpad/src/common/windows/http_upload.cc