components/update_client/utils.h

   1 // Copyright 2014 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 #ifndef COMPONENTS_UPDATE_CLIENT_UTILS_H_
   6 #define COMPONENTS_UPDATE_CLIENT_UTILS_H_
   7
   8 #include <string>
   9
  10 class GURL;
  11
  12 namespace base {
  13 class FilePath;
  14 }
  15
  16 namespace net {
  17 class URLFetcher;
  18 class URLFetcherDelegate;
  19 class URLRequestContextGetter;
  20 }
  21
  22 namespace update_client {
  23
  24 class Configurator;
  25 struct CrxComponent;
  26 struct CrxUpdateItem;
  27
  28 // An update protocol request starts with a common preamble which includes
  29 // version and platform information for Chrome and the operating system,
  30 // followed by a request body, which is the actual payload of the request.
  31 // For example:
  32 //
  33 // <?xml version="1.0" encoding="UTF-8"?>
  34 // <request protocol="3.0" version="chrome-32.0.1.0"  prodversion="32.0.1.0"
  35 //        requestid="{7383396D-B4DD-46E1-9104-AAC6B918E792}"
  36 //        updaterchannel="canary" arch="x86" nacl_arch="x86-64"
  37 //        ADDITIONAL ATTRIBUTES>
  38 //   <hw physmemory="16"/>
  39 //   <os platform="win" version="6.1" arch="x86"/>
  40 //   ... REQUEST BODY ...
  41 // </request>
  42
  43 // Builds a protocol request string by creating the outer envelope for
  44 // the request and including the request body specified as a parameter.
  45 // If specified, |additional_attributes| are appended as attributes of the
  46 // request element. The additional attributes have to be well-formed for
  47 // insertion in the request element.
  48 std::string BuildProtocolRequest(const std::string& browser_version,
  49                                  const std::string& channel,
  50                                  const std::string& lang,
  51                                  const std::string& os_long_name,
  52                                  const std::string& request_body,
  53                                  const std::string& additional_attributes);
  54
  55 // Sends a protocol request to the the service endpoint specified by |url|.
  56 // The body of the request is provided by |protocol_request| and it is
  57 // expected to contain XML data. The caller owns the returned object.
  58 net::URLFetcher* SendProtocolRequest(
  59     const GURL& url,
  60     const std::string& protocol_request,
  61     net::URLFetcherDelegate* url_fetcher_delegate,
  62     net::URLRequestContextGetter* url_request_context_getter);
  63
  64 // Returns true if the url request of |fetcher| was succesful.
  65 bool FetchSuccess(const net::URLFetcher& fetcher);
  66
  67 // Returns the error code which occured during the fetch. The function returns 0
  68 // if the fetch was successful. If errors happen, the function could return a
  69 // network error, an http response code, or the status of the fetch, if the
  70 // fetch is pending or canceled.
  71 int GetFetchError(const net::URLFetcher& fetcher);
  72
  73 // Returns true if the |update_item| contains a valid differential update url.
  74 bool HasDiffUpdate(const CrxUpdateItem* update_item);
  75
  76 // Returns true if the |status_code| represents a server error 5xx.
  77 bool IsHttpServerError(int status_code);
  78
  79 // Deletes the file and its directory, if the directory is empty. If the
  80 // parent directory is not empty, the function ignores deleting the directory.
  81 // Returns true if the file and the empty directory are deleted.
  82 bool DeleteFileAndEmptyParentDirectory(const base::FilePath& filepath);
  83
  84 // Returns the component id of the |component|. The component id is in a
  85 // format similar with the format of an extension id.
  86 std::string GetCrxComponentID(const CrxComponent& component);
  87
  88 }  // namespace update_client
  89
  90 #endif  // COMPONENTS_UPDATE_CLIENT_UTILS_H_