(Visual FoxPro) Amazon Glacier Get Vault Access Policy

Demonstrates how to retrieve the access-policy subresource set on the vault

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL loRest
LOCAL lnBTls
LOCAL lnPort
LOCAL lnBAutoReconnect
LOCAL lnSuccess
LOCAL loAuthAws
LOCAL loSbResponseBody
LOCAL lnRespStatusCode
LOCAL loJson
LOCAL loJsonPolicy
LOCAL lcVersion
LOCAL i
LOCAL lnCount_i
LOCAL lcSid
LOCAL lcEffect
LOCAL lcPrincipalAWS
LOCAL lcAction
LOCAL lcResource

* This example requires the Chilkat API to have been previously unlocked.
* See Global Unlock Sample for sample code.

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Rest')
loRest = CreateObject('Chilkat.Rest')

* Connect to the Amazon AWS REST server in the desired region.
lnBTls = 1
lnPort = 443
lnBAutoReconnect = 1
lnSuccess = loRest.Connect("glacier.us-west-2.amazonaws.com",lnPort,lnBTls,lnBAutoReconnect)

* Provide AWS credentials.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.AuthAws')
loAuthAws = CreateObject('Chilkat.AuthAws')
loAuthAws.AccessKey = "AWS_ACCESS_KEY"
loAuthAws.SecretKey = "AWS_SECRET_KEY"
loAuthAws.ServiceName = "glacier"
loAuthAws.Region = "us-west-2"

lnSuccess = loRest.SetAuthAws(loAuthAws)

* --------------------------------------------------------------------------
* Note: The above REST connection and setup of the AWS credentials
* can be done once.  After connecting, any number of REST calls can be made.
* The "auto reconnect" property passed to rest.Connect indicates that if
* the connection is lost, a REST method call will automatically reconnect
* if needed.
* --------------------------------------------------------------------------

* 
* For more information, see Glacier Get Vault Access Policy Reference Documentation
* 
loRest.AddHeader("x-amz-glacier-version","2012-06-01")

* Get the access policy for the "chilkat" vault.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder')
loSbResponseBody = CreateObject('Chilkat.StringBuilder')
lnSuccess = loRest.FullRequestNoBodySb("GET","/AWS_ACCOUNT_ID/vaults/chilkat/access-policy",loSbResponseBody)
IF (lnSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loRest
    RELEASE loAuthAws
    RELEASE loSbResponseBody
    CANCEL
ENDIF

lnRespStatusCode = loRest.ResponseStatusCode
IF (lnRespStatusCode >= 400) THEN
    ? "Response Status Code = " + STR(lnRespStatusCode)
    ? "Response Header:"
    ? loRest.ResponseHeader
    ? "Response Body:"
    ? loSbResponseBody.GetAsString()
    RELEASE loRest
    RELEASE loAuthAws
    RELEASE loSbResponseBody
    CANCEL
ENDIF

* Success is indicated by a 200 response status.
? "response status code = " + STR(lnRespStatusCode)

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.JsonObject')
loJson = CreateObject('Chilkat.JsonObject')
loJson.LoadSb(loSbResponseBody)
loJson.EmitCompact = 0

* Returns JSON such as this:
* {
*   "Policy": "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Sid\":\"Define-owner-access-rights\",\"Effect\":\"Allow\",\"Principal\":{\"AWS\":\"arn:aws:iam::9999999999999:root\"},\"Action\":\"glacier:DeleteArchive\",\"Resource\":\"arn:aws:glacier:us-west-2:9999999999999:vaults/chilkat\"}]}"
* }

* Unwrap...
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.JsonObject')
loJsonPolicy = CreateObject('Chilkat.JsonObject')
loJsonPolicy.Load(loJson.StringOf("Policy"))
loJsonPolicy.EmitCompact = 0

? loJsonPolicy.Emit()
? "----"

* The jsonPolicy contains:

* {
*   "Version": "2012-10-17",
*   "Statement": [
*     {
*       "Sid": "Define-owner-access-rights",
*       "Effect": "Allow",
*       "Principal": {
*         "AWS": "arn:aws:iam::9999999999999:root"
*       },
*       "Action": "glacier:DeleteArchive",
*       "Resource": "arn:aws:glacier:us-west-2:9999999999999:vaults/chilkat"
*     }
*   ]
* }
* 

* Use this online tool to generate parsing code from sample JSON: 
* Generate Parsing Code from JSON

* To parse the above contents of jsonPolicy...

lcVersion = loJsonPolicy.StringOf("Version")
i = 0
lnCount_i = loJsonPolicy.SizeOfArray("Statement")
DO WHILE i < lnCount_i
    loJsonPolicy.I = i
    lcSid = loJsonPolicy.StringOf("Statement[i].Sid")
    lcEffect = loJsonPolicy.StringOf("Statement[i].Effect")
    lcPrincipalAWS = loJsonPolicy.StringOf("Statement[i].Principal.AWS")
    lcAction = loJsonPolicy.StringOf("Statement[i].Action")
    lcResource = loJsonPolicy.StringOf("Statement[i].Resource")
    i = i + 1
ENDDO

RELEASE loRest
RELEASE loAuthAws
RELEASE loSbResponseBody
RELEASE loJson
RELEASE loJsonPolicy