chrome/browser/component_updater/component_updater_utils.h

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