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(Unicode C) Get Access Token for Google Tasks using Service Account JSON KeyDemonstrates how to get an access token for the Google Tasks API using a Service Account JSON key.
#include <C_CkFileAccessW.h> #include <C_CkAuthGoogleW.h> #include <C_CkSocketW.h> void ChilkatSample(void) { HCkFileAccessW fac; const wchar_t *jsonKey; HCkAuthGoogleW gAuth; HCkSocketW tlsSock; BOOL success; // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // First load the JSON key into a string. fac = CkFileAccessW_Create(); jsonKey = CkFileAccessW_readEntireTextFile(fac,L"qa_data/googleSvcAccountKeys/ChilkatCloud-48f7737c7505.json",L"utf-8"); if (CkFileAccessW_getLastMethodSuccess(fac) != TRUE) { wprintf(L"%s\n",CkFileAccessW_lastErrorText(fac)); CkFileAccessW_Dispose(fac); return; } // A JSON private key should look like this: // { // "type": "service_account", // "project_id": "chilkatcloud", // "private_key_id": "48f7737c7505bb88eee6a20d09993e10605d466e", // "private_key": "-----BEGIN PRIVATE KEY----- ... -----END PRIVATE KEY-----\n", // "client_email": "pip-564@chilkatcloud.iam.gserviceaccount.com", // "client_id": "109982228323456925225", // "auth_uri": "https://accounts.google.com/o/oauth2/auth", // "token_uri": "https://oauth2.googleapis.com/token", // "auth_provider_x509_cert_url": "https://www.googleapis.com/oauth2/v1/certs", // "client_x509_cert_url": "https://www.googleapis.com/robot/v1/metadata/x509/pip-564%40chilkatcloud.iam.gserviceaccount.com" // } gAuth = CkAuthGoogleW_Create(); CkAuthGoogleW_putJsonKey(gAuth,jsonKey); // Choose the scope for read/write access. CkAuthGoogleW_putScope(gAuth,L"https://www.googleapis.com/auth/tasks"); // Request an access token that is valid for this many seconds. CkAuthGoogleW_putExpireNumSeconds(gAuth,3600); CkAuthGoogleW_putSubEmailAddress(gAuth,L""); // Connect to www.googleapis.com using TLS tlsSock = CkSocketW_Create(); success = CkSocketW_Connect(tlsSock,L"www.googleapis.com",443,TRUE,5000); if (success != TRUE) { wprintf(L"%s\n",CkSocketW_lastErrorText(tlsSock)); CkFileAccessW_Dispose(fac); CkAuthGoogleW_Dispose(gAuth); CkSocketW_Dispose(tlsSock); return; } // Send the request to obtain the access token. success = CkAuthGoogleW_ObtainAccessToken(gAuth,tlsSock); if (success != TRUE) { wprintf(L"%s\n",CkAuthGoogleW_lastErrorText(gAuth)); CkFileAccessW_Dispose(fac); CkAuthGoogleW_Dispose(gAuth); CkSocketW_Dispose(tlsSock); return; } // Examine the access token: wprintf(L"Access Token: %s\n",CkAuthGoogleW_accessToken(gAuth)); // Save our access token to a file. success = CkFileAccessW_WriteEntireTextFile(fac,L"qa_data/tokens/googleTasks.txt",CkAuthGoogleW_accessToken(gAuth),L"utf-8",FALSE); CkFileAccessW_Dispose(fac); CkAuthGoogleW_Dispose(gAuth); CkSocketW_Dispose(tlsSock); } |
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