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(Tcl) Shopify OAuth2 AuthenticationDemonstrates obtaining an access token for a Shopify application using OAuth2 authentication. This example is for non-web-apps, and requires that a browser window be displayed to get authorization from the user. A web-based application would not obtain an OAuth2 token in this way, because the redirect URL would route back to the web application. Note: Once an access token is in hand, the remainder of the Chilkat examples, which use an already-obtained access token, apply to both web and non-web apps.
load ./chilkat.dll # This example requires the Chilkat API to have been previously unlocked. # See Global Unlock Sample for sample code. set oauth2 [new_CkOAuth2] # This should be the port in the localhost callback URL for your app. # The callback URL would look like "http://localhost:3017/" if the port number is 3017. # Make sure that "http://localhost:3017/" is listed in your Whitelisted Redirection URLs for your Shopify app. CkOAuth2_put_ListenPort $oauth2 3017 # The full content of the Authorization Endpoin for Shopify looks like this: # https://{shop}.myshopify.com/admin/oauth/authorize?client_id={api_key}&scope={scopes}&redirect_uri={redirect_uri}&state={nonce}&grant_options[]={option} # Replace "chilkat" with your shop name. CkOAuth2_put_AuthorizationEndpoint $oauth2 "https://chilkat.myshopify.com/admin/oauth/authorize" CkOAuth2_put_TokenEndpoint $oauth2 "https://chilkat.myshopify.com/admin/oauth/access_token" # Replace these with actual values. CkOAuth2_put_ClientId $oauth2 "SHOPIFY_API_KEY" CkOAuth2_put_ClientSecret $oauth2 "SHOPIFY_API_SECRET_KEY" CkOAuth2_put_CodeChallenge $oauth2 1 CkOAuth2_put_CodeChallengeMethod $oauth2 "S256" # Set requested scopes. See https://help.shopify.com/api/getting-started/authentication/oauth CkOAuth2_put_Scope $oauth2 "read_product_listings,read_customers,read_orders,read_draft_orders" # Begin the OAuth2 three-legged flow. This returns a URL that should be loaded in a browser. set url [CkOAuth2_startAuth $oauth2] if {[expr [CkOAuth2_get_LastMethodSuccess $oauth2] != 1]} then { puts [CkOAuth2_lastErrorText $oauth2] delete_CkOAuth2 $oauth2 exit } # 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 # The Shopify 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 30 seconds. set numMsWaited 0 while {[expr [expr $numMsWaited < 30000] AND [expr [CkOAuth2_get_AuthFlowState $oauth2] < 3]]} { [CkOAuth2_SleepMs $oauth2 100] set numMsWaited [expr $numMsWaited + 100] } # If there was no response from the browser within 30 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 {[expr [CkOAuth2_get_AuthFlowState $oauth2] < 3]} then { [CkOAuth2_Cancel $oauth2] puts "No response from the browser!" delete_CkOAuth2 $oauth2 exit } # 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 {[expr [CkOAuth2_get_AuthFlowState $oauth2] == 5]} then { puts "OAuth2 failed to complete." puts [CkOAuth2_failureInfo $oauth2] delete_CkOAuth2 $oauth2 exit } if {[expr [CkOAuth2_get_AuthFlowState $oauth2] == 4]} then { puts "OAuth2 authorization was denied." puts [CkOAuth2_accessTokenResponse $oauth2] delete_CkOAuth2 $oauth2 exit } if {[expr [CkOAuth2_get_AuthFlowState $oauth2] != 3]} then { puts "Unexpected AuthFlowState:[CkOAuth2_get_AuthFlowState $oauth2]" delete_CkOAuth2 $oauth2 exit } puts "OAuth2 authorization granted!" puts "Access Token = [CkOAuth2_accessToken $oauth2]" delete_CkOAuth2 $oauth2 |
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