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(Swift 2) Google Photos OAuth2 Access TokenDemonstrates how to get a Google Photos OAuth2 access token from a desktop application or script.
func chilkatTest() { // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. let oauth2 = CkoOAuth2() var success: Bool // For Google OAuth2, set the listen port equal to the port used // in the Authorized Redirect URL for the Client ID. // For example, in this case the Authorized Redirect URL would be http://localhost:3017/ // Your app should choose a port not likely not used by any other application. oauth2.ListenPort = 3017 oauth2.AuthorizationEndpoint = "https://accounts.google.com/o/oauth2/v2/auth" oauth2.TokenEndpoint = "https://www.googleapis.com/oauth2/v4/token" // Replace these with actual values. oauth2.ClientId = "GOOGLE-CLIENT-ID" oauth2.ClientSecret = "GOOGLE-CLIENT-SECRET" oauth2.CodeChallenge = true oauth2.CodeChallengeMethod = "S256" // This is a scope for Google Photos. See https://developers.google.com/photos/library/guides/authentication-authorization // This scope provides read/write access but not sharing. oauth2.Scope = "https://www.googleapis.com/auth/photoslibrary" // Begin the OAuth2 three-legged flow. This returns a URL that should be loaded in a browser. var url: String? = oauth2.StartAuth() if oauth2.LastMethodSuccess != true { print("\(oauth2.LastErrorText)") return } // At this point, your application should load the URL in a browser. // For example, // in C#: System.Diagnostics.Process.Start(url); // in Java: Desktop.getDesktop().browse(new URI(url)); // in VBScript: Set wsh=WScript.CreateObject("WScript.Shell") // wsh.Run url // in Xojo: ShowURL(url) (see http://docs.xojo.com/index.php/ShowURL) // in Dataflex: Runprogram Background "c:\Program Files\Internet Explorer\iexplore.exe" sUrl // The Google account owner would interactively accept or deny the authorization request. // Add the code to load the url in a web browser here... // Add the code to load the url in a web browser here... // Add the code to load the url in a web browser here... // Now wait for the authorization. // We'll wait for a max of 120 seconds. var numMsWaited: Int = 0 while (numMsWaited < 120000) && (oauth2.AuthFlowState.intValue < 3) { oauth2.SleepMs(100) numMsWaited = numMsWaited + 100 } // If there was no response from the browser within 120 seconds, then // the AuthFlowState will be equal to 1 or 2. // 1: Waiting for Redirect. The OAuth2 background thread is waiting to receive the redirect HTTP request from the browser. // 2: Waiting for Final Response. The OAuth2 background thread is waiting for the final access token response. // In that case, cancel the background task started in the call to StartAuth. if oauth2.AuthFlowState.intValue < 3 { oauth2.Cancel() print("No response from the browser!") return } // Check the AuthFlowState to see if authorization was granted, denied, or if some error occurred // The possible AuthFlowState values are: // 3: Completed with Success. The OAuth2 flow has completed, the background thread exited, and the successful JSON response is available in AccessTokenResponse property. // 4: Completed with Access Denied. The OAuth2 flow has completed, the background thread exited, and the error JSON is available in AccessTokenResponse property. // 5: Failed Prior to Completion. The OAuth2 flow failed to complete, the background thread exited, and the error information is available in the FailureInfo property. if oauth2.AuthFlowState.intValue == 5 { print("OAuth2 failed to complete.") print("\(oauth2.FailureInfo)") return } if oauth2.AuthFlowState.intValue == 4 { print("OAuth2 authorization was denied.") print("\(oauth2.AccessTokenResponse)") return } if oauth2.AuthFlowState.intValue != 3 { print("Unexpected AuthFlowState:\(oauth2.AuthFlowState.intValue)") return } // Save the full JSON access token response to a file. let sbJson = CkoStringBuilder() sbJson.Append(oauth2.AccessTokenResponse) sbJson.WriteFile("qa_data/tokens/googlePhotos.json", charset: "utf-8", emitBom: false) // The saved JSON response looks like this: // { // "access_token": "ya29.GlamBqWR6cp8lEfJMmTHVEua45912XLKoq4djyHl_Z3CEIzsPLIZkJSGie5oOrbaggy1rjJHn1zW5bjqSesGr5MEYIp9Hx-0CuvjVYf8srg2jeaDMwMACvzemp43", // "expires_in": 3600, // "refresh_token": "1/rl6k16nysDl9Bp1EhRH9F1WyRIoiSQAvko49Z4yY694MT5V1QXLj2ibNZGaRgek0", // "scope": "https://www.googleapis.com/auth/photoslibrary", // "token_type": "Bearer" // } print("OAuth2 authorization granted!") print("Access Token = \(oauth2.AccessToken)") } |
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