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