google_apis/google_api_keys.h

   1 // Copyright (c) 2012 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 GOOGLE_APIS_GOOGLE_API_KEYS_H_
   6 #define GOOGLE_APIS_GOOGLE_API_KEYS_H_
   7
   8 // If you add more includes to this file, you also need to add them to
   9 // google_api_keys_unittest.cc.
  10 #include <string>
  11
  12 // These functions enable you to retrieve keys to use for Google APIs
  13 // such as Translate and Safe Browsing.
  14 //
  15 // You can retrieve either an "API key" (sometimes called a developer
  16 // key) which identifies you (or the company you work for) as a
  17 // developer, or you can retrieve the "client ID" and "client secret"
  18 // used by you (or the company you work for) to generate OAuth2
  19 // requests.
  20 //
  21 // Each developer (or group of developers working together for a
  22 // single company) must request a Google API key and the client ID and
  23 // client secret for OAuth2.  See
  24 // https://developers.google.com/console/help/ and
  25 // https://developers.google.com/console/.
  26 //
  27 // The keys must either be provided using preprocessor variables (set
  28 // via e.g. ~/.gyp/include.gypi). Alternatively, they can be
  29 // overridden at runtime using environment variables of the same name.
  30 //
  31 // The names of the preprocessor variables (or environment variables
  32 // to override them at runtime) are as follows:
  33 // - GOOGLE_API_KEY: The API key, a.k.a. developer key.
  34 // - GOOGLE_DEFAULT_CLIENT_ID: If set, this is used as the default for
  35 //   all client IDs not otherwise set.  This is intended only for
  36 //   development.
  37 // - GOOGLE_DEFAULT_CLIENT_SECRET: If set, this is used as the default
  38 //   for all client secrets.  This is intended only for development.
  39 // - GOOGLE_CLIENT_ID_[client name]
  40 //   (e.g. GOOGLE_CLIENT_ID_CLOUD_PRINT, i.e. one for each item in the
  41 //   OAuth2Client enumeration below)
  42 // - GOOGLE_CLIENT_SECRET_[client name]
  43 //   (e.g. GOOGLE_CLIENT_SECRET_CLOUD_PRINT, i.e. one for each item in
  44 //   the OAuth2Client enumeration below)
  45 //
  46 // The GOOGLE_CLIENT_ID_MAIN and GOOGLE_CLIENT_SECRET_MAIN values can
  47 // also be set via the command line (this overrides any other
  48 // setting).  The command-line parameters are --oauth2-client-id and
  49 // --oauth2-client-secret.
  50 //
  51 // If some of the parameters mentioned above are not provided,
  52 // Chromium will still build and run, but services that require them
  53 // may fail to work without warning.  They should do so gracefully,
  54 // similar to what would happen when a network connection is
  55 // unavailable.
  56
  57 namespace google_apis {
  58
  59 // Returns true if no dummy API keys or OAuth2 tokens are set.
  60 bool HasKeysConfigured();
  61
  62 // Retrieves the API key, a.k.a. developer key, or a dummy string
  63 // if not set.
  64 //
  65 // Note that the key should be escaped for the context you use it in,
  66 // e.g. URL-escaped if you use it in a URL.
  67 std::string GetAPIKey();
  68
  69 // Represents the different sets of client IDs and secrets in use.
  70 enum OAuth2Client {
  71   CLIENT_MAIN,         // Several different features use this.
  72   CLIENT_CLOUD_PRINT,
  73   CLIENT_REMOTING,
  74
  75   CLIENT_NUM_ITEMS     // Must be last item.
  76 };
  77
  78 // Retrieves the OAuth2 client ID for the specified client, or the
  79 // empty string if not set.
  80 //
  81 // Note that the ID should be escaped for the context you use it in,
  82 // e.g. URL-escaped if you use it in a URL.
  83 std::string GetOAuth2ClientID(OAuth2Client client);
  84
  85 // Retrieves the OAuth2 client secret for the specified client, or the
  86 // empty string if not set.
  87 //
  88 // Note that the secret should be escaped for the context you use it
  89 // in, e.g. URL-escaped if you use it in a URL.
  90 std::string GetOAuth2ClientSecret(OAuth2Client client);
  91
  92 }  // namespace google_apis
  93
  94 #endif  // GOOGLE_APIS_GOOGLE_API_KEYS_H_