Lua

Configure Azure SAS Authentication for REST

Demonstrates Rest.SetAuthAzureSas, which associates an AuthAzureSAS provider so requests are authorized with an Azure Shared Access Signature token.

Background. A SAS token grants time-limited, permission-scoped access to Azure Storage resources without exposing the account key on the wire. Use SAS authorization when a query-token approach is preferred over Shared Key headers.

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Lua

local chilkat = require("chilkat")

local rest = chilkat.Rest.new()
local bTls = true
local bAutoReconnect = true
local success = rest:connect("example.com", 443, bTls, bAutoReconnect)
if not success then
    print(rest.last_error_text)
    return
end

-- Configure Azure Shared Access Signature (SAS) authentication.  Provide the account access key
-- and the SAS token query parameters; Chilkat adds the SAS token to each request.
local azSas = chilkat.AuthAzureSAS.new()
-- Normally you would not hard-code secrets in source.  You should instead obtain them from an
-- interactive prompt, environment variable, or a secrets vault.
azSas.access_key = "BASE64_ACCOUNT_ACCESS_KEY"

-- Associate the provider with the REST object.
success = rest:set_auth_azure_sas(azSas)
if not success then
    print(rest.last_error_text)
    return
end

local responseText = rest:full_request_no_body("GET", "/mycontainer/myblob.txt")
if not rest.last_method_success then
    print(rest.last_error_text)
    return
end

print(responseText)