Visual FoxPro

Amazon Glacier Get Vault Access Policy

See more Amazon Glacier Examples

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

LOCAL lnSuccess
LOCAL loRest
LOCAL lnBTls
LOCAL lnPort
LOCAL lnBAutoReconnect
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

lnSuccess = 0

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

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.
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.
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)

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...
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