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