chrome/browser/component_updater/component_updater_utils.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/component_updater/component_updater_utils.h"
   6 #include "base/file_util.h"
   7 #include "base/files/file_path.h"
   8 #include "base/guid.h"
   9 #include "base/strings/string_number_conversions.h"
  10 #include "base/strings/string_piece.h"
  11 #include "base/strings/string_util.h"
  12 #include "base/strings/stringprintf.h"
  13 #include "base/sys_info.h"
  14 #include "base/win/windows_version.h"
  15 #include "chrome/browser/component_updater/component_updater_service.h"
  16 #include "chrome/browser/component_updater/crx_update_item.h"
  17 #include "chrome/common/chrome_version_info.h"
  18 #include "chrome/common/omaha_query_params/omaha_query_params.h"
  19 #include "extensions/common/extension.h"
  20 #include "net/base/load_flags.h"
  21 #include "net/url_request/url_fetcher.h"
  22 #include "net/url_request/url_request_context_getter.h"
  23 #include "net/url_request/url_request_status.h"
  24
  25 namespace component_updater {
  26
  27 std::string BuildProtocolRequest(const std::string& request_body,
  28                                  const std::string& additional_attributes) {
  29   const std::string prod_id(chrome::OmahaQueryParams::GetProdIdString(
  30       chrome::OmahaQueryParams::CHROME));
  31   const chrome::VersionInfo chrome_version_info;
  32   const std::string chrome_version(chrome_version_info.Version());
  33
  34   std::string request(
  35       "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
  36       "<request protocol=\"3.0\" ");
  37
  38   if (!additional_attributes.empty())
  39      base::StringAppendF(&request, "%s ", additional_attributes.c_str());
  40
  41   // Chrome version and platform information.
  42   base::StringAppendF(
  43       &request,
  44       "version=\"%s-%s\" prodversion=\"%s\" "
  45       "requestid=\"{%s}\" updaterchannel=\"%s\" prodchannel=\"%s\" "
  46       "os=\"%s\" arch=\"%s\" nacl_arch=\"%s\"",
  47       prod_id.c_str(), chrome_version.c_str(),        // "version"
  48       chrome_version.c_str(),                         // "prodversion"
  49       base::GenerateGUID().c_str(),                   // "requestid"
  50       chrome::OmahaQueryParams::GetChannelString(),   // "updaterchannel"
  51       chrome::OmahaQueryParams::GetChannelString(),   // "prodchannel"
  52       chrome::OmahaQueryParams::getOS(),              // "os"
  53       chrome::OmahaQueryParams::getArch(),            // "arch"
  54       chrome::OmahaQueryParams::getNaclArch());       // "nacl_arch"
  55 #if defined(OS_WIN)
  56     const bool is_wow64(
  57         base::win::OSInfo::GetInstance()->wow64_status() ==
  58         base::win::OSInfo::WOW64_ENABLED);
  59     if (is_wow64)
  60       base::StringAppendF(&request, " wow64=\"1\"");
  61 #endif
  62     base::StringAppendF(&request, ">");
  63
  64   // OS version and platform information.
  65   base::StringAppendF(
  66       &request,
  67       "<os platform=\"%s\" version=\"%s\" arch=\"%s\"/>",
  68       chrome::VersionInfo().OSType().c_str(),                  // "platform"
  69       base::SysInfo().OperatingSystemVersion().c_str(),        // "version"
  70       base::SysInfo().OperatingSystemArchitecture().c_str());  // "arch"
  71
  72   // The actual payload of the request.
  73   base::StringAppendF(&request, "%s</request>", request_body.c_str());
  74
  75   return request;
  76 }
  77
  78 net::URLFetcher* SendProtocolRequest(
  79     const GURL& url,
  80     const std::string& protocol_request,
  81     net::URLFetcherDelegate* url_fetcher_delegate,
  82     net::URLRequestContextGetter* url_request_context_getter) {
  83   net::URLFetcher* url_fetcher(
  84       net::URLFetcher::Create(0,
  85                               url,
  86                               net::URLFetcher::POST,
  87                               url_fetcher_delegate));
  88
  89   url_fetcher->SetUploadData("application/xml", protocol_request);
  90   url_fetcher->SetRequestContext(url_request_context_getter);
  91   url_fetcher->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES |
  92                             net::LOAD_DO_NOT_SAVE_COOKIES |
  93                             net::LOAD_DISABLE_CACHE);
  94   url_fetcher->SetAutomaticallyRetryOn5xx(false);
  95   url_fetcher->Start();
  96
  97   return url_fetcher;
  98 }
  99
 100 bool FetchSuccess(const net::URLFetcher& fetcher) {
 101   return GetFetchError(fetcher) == 0;
 102 }
 103
 104 int GetFetchError(const net::URLFetcher& fetcher) {
 105   const net::URLRequestStatus::Status status(fetcher.GetStatus().status());
 106   switch (status) {
 107     case net::URLRequestStatus::IO_PENDING:
 108     case net::URLRequestStatus::CANCELED:
 109       // Network status is a small positive number.
 110       return status;
 111
 112     case net::URLRequestStatus::SUCCESS: {
 113       // Response codes are positive numbers, greater than 100.
 114       const int response_code(fetcher.GetResponseCode());
 115       if (response_code == 200)
 116         return 0;
 117       else
 118         return response_code ? response_code : -1;
 119     }
 120
 121     case net::URLRequestStatus::FAILED: {
 122       // Network errors are small negative numbers.
 123       const int error = fetcher.GetStatus().error();
 124       return error ? error : -1;
 125     }
 126
 127     default:
 128       return -1;
 129   }
 130 }
 131
 132 bool HasDiffUpdate(const CrxUpdateItem* update_item) {
 133   return !update_item->crx_diffurls.empty();
 134 }
 135
 136 bool IsHttpServerError(int status_code) {
 137   return 500 <= status_code && status_code < 600;
 138 }
 139
 140 bool DeleteFileAndEmptyParentDirectory(const base::FilePath& filepath) {
 141   if (!base::DeleteFile(filepath, false))
 142     return false;
 143
 144   const base::FilePath dirname(filepath.DirName());
 145   if (!base::IsDirectoryEmpty(dirname))
 146     return true;
 147
 148   return base::DeleteFile(dirname, false);
 149 }
 150
 151 // Produces an extension-like friendly id.
 152 std::string HexStringToID(const std::string& hexstr) {
 153   std::string id;
 154   for (size_t i = 0; i < hexstr.size(); ++i) {
 155     int val = 0;
 156     if (base::HexStringToInt(base::StringPiece(hexstr.begin() + i,
 157                                                hexstr.begin() + i + 1),
 158                              &val)) {
 159       id.append(1, val + 'a');
 160     } else {
 161       id.append(1, 'a');
 162     }
 163   }
 164   DCHECK(extensions::Extension::IdIsValid(id));
 165   return id;
 166 }
 167
 168 std::string GetCrxComponentID(const CrxComponent& component) {
 169   return HexStringToID(StringToLowerASCII(base::HexEncode(&component.pk_hash[0],
 170                        component.pk_hash.size()/2)));
 171 }
 172
 173 }  // namespace component_updater
 174