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(Unicode C) Create an Azure Service SASShows how to generate an Azure Service SAS.
#include <C_CkAuthAzureSASW.h> #include <C_CkDateTimeW.h> #include <C_CkFileAccessW.h> void ChilkatSample(void) { HCkAuthAzureSASW authSas; HCkDateTimeW dt; const wchar_t *sasToken; HCkFileAccessW fac; // This requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // ---------------------------------------------------------------------------------------------- // Create a Shared Access Signature (SAS) token for an Azure Service (Blob, Queue, Table, or File) // ----------------------------------------------------------------------------------------------- // See https://docs.microsoft.com/en-us/rest/api/storageservices/create-service-sas // for details. authSas = CkAuthAzureSASW_Create(); CkAuthAzureSASW_putAccessKey(authSas,L"AZURE_ACCESS_KEY"); // Specify the format of the string to sign. // Each comma character in the following string represents a LF ("\n") character. // The names specified in the StringToSign are replaced with the values specified // in the subsequent calls to SetTokenParam and SetNonTokenParam,. // Note: The trailing comma in the StringToSign is intentional and important. This indicates that the // string to sign will end with a "\n". // Also note: The names in the StringToSign are case sensitive. The names // specified in the 1st argument in the calls to SetNonTokenParam and SetTokenParam should // match a name listed in StringToSign. // Version 2018-11-09 and later // // Version 2018-11-09 adds support for the signed resource and signed blob snapshot time fields. // These must be included in the string-to-sign. To construct the string-to-sign for Blob service resources, use the following format: // // StringToSign = signedpermissions + "\n" + // signedstart + "\n" + // signedexpiry + "\n" + // canonicalizedresource + "\n" + // signedidentifier + "\n" + // signedIP + "\n" + // signedProtocol + "\n" + // signedversion + "\n" + // signedResource + "\n" // signedSnapshotTime + "\n" + // rscc + "\n" + // rscd + "\n" + // rsce + "\n" + // rscl + "\n" + // rsct // CkAuthAzureSASW_putStringToSign(authSas,L"signedpermissions,signedstart,signedexpiry,canonicalizedresource,signedidentifier,signedIP,signedProtocol,signedversion,signedResource,signedSnapshotTime,rscc,rscd,rsce,rscl,rsct"); CkAuthAzureSASW_SetTokenParam(authSas,L"signedpermissions",L"sp",L"rw"); dt = CkDateTimeW_Create(); CkDateTimeW_SetFromCurrentSystemTime(dt); CkAuthAzureSASW_SetTokenParam(authSas,L"signedstart",L"st",CkDateTimeW_getAsIso8601(dt,L"YYYY-MM-DDThh:mmTZD",FALSE)); // This SAS token will be valid for 30 days. CkDateTimeW_AddDays(dt,30); CkAuthAzureSASW_SetTokenParam(authSas,L"signedexpiry",L"se",CkDateTimeW_getAsIso8601(dt,L"YYYY-MM-DDThh:mmTZD",FALSE)); // The canonicalizedresouce portion of the string is a canonical path to the signed resource. It must include the service name (blob, table, queue or file) for version // 2021-08-06 or later, the storage account name, and the resource name, and must be URL-decoded. Names of blobs must include the blobs container. Table names must be // lower-case. The following examples show how to construct the canonicalizedresource portion of the string, depending on the type of resource. // For example: // URL = https://chilkat.blob.core.windows.net/mycontainer/starfish.jpg // canonicalizedresource = "/blob/chilkat/mycontainer/starfish.jpg" // IMPORTANT: See https://docs.microsoft.com/en-us/rest/api/storageservices/create-service-sas for all details.. CkAuthAzureSASW_SetNonTokenParam(authSas,L"canonicalizedresource",L"/blob/chilkat/mycontainer/starfish.jpg"); CkAuthAzureSASW_SetTokenParam(authSas,L"signedProtocol",L"spr",L"https"); // Specifiy values and query param names for each field. // If a field is not specified, then an empty string will be used for its value. CkAuthAzureSASW_SetTokenParam(authSas,L"signedversion",L"sv",L"2018-11-09"); // Indicate that we are creating a service SAS that is limited to the blob resource. // (Specify b if the shared resource is a blob. This grants access to the content and metadata of the blob. // Specify c if the shared resource is a container. This grants access to the content and metadata of any blob in the container, and to the list of blobs in the container. ) CkAuthAzureSASW_SetTokenParam(authSas,L"signedResource",L"sr",L"b"); // Note that we did not call SetTokenParam for "signedIP", "signedSnapshotTime", "rscc", and others. For any omitted fields // the value will default to the empty string. // Generate the SAS token. sasToken = CkAuthAzureSASW_generateToken(authSas); if (CkAuthAzureSASW_getLastMethodSuccess(authSas) != TRUE) { wprintf(L"%s\n",CkAuthAzureSASW_lastErrorText(authSas)); CkAuthAzureSASW_Dispose(authSas); CkDateTimeW_Dispose(dt); return; } wprintf(L"SAS token: %s\n",sasToken); // Save the SAS Service token to a file. // We can then use this pre-generated token for future Azure Storage Account operations. fac = CkFileAccessW_Create(); CkFileAccessW_WriteEntireTextFile(fac,L"qa_data/tokens/azureStorageServiceSas.txt",sasToken,L"utf-8",FALSE); CkAuthAzureSASW_Dispose(authSas); CkDateTimeW_Dispose(dt); CkFileAccessW_Dispose(fac); } |
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