(Perl) Amazon Glacier Get Vault Access Policy

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

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

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

$rest = chilkat::CkRest->new();

# Connect to the Amazon AWS REST server in the desired region.
$bTls = 1;
$port = 443;
$bAutoReconnect = 1;
$success = $rest->Connect("glacier.us-west-2.amazonaws.com",$port,$bTls,$bAutoReconnect);

# Provide AWS credentials.
$authAws = chilkat::CkAuthAws->new();
$authAws->put_AccessKey("AWS_ACCESS_KEY");
$authAws->put_SecretKey("AWS_SECRET_KEY");
$authAws->put_ServiceName("glacier");
$authAws->put_Region("us-west-2");

$success = $rest->SetAuthAws($authAws);

# --------------------------------------------------------------------------
# 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
# 
$rest->AddHeader("x-amz-glacier-version","2012-06-01");

# Get the access policy for the "chilkat" vault.
$sbResponseBody = chilkat::CkStringBuilder->new();
$success = $rest->FullRequestNoBodySb("GET","/AWS_ACCOUNT_ID/vaults/chilkat/access-policy",$sbResponseBody);
if ($success != 1) {
    print $rest->lastErrorText() . "\r\n";
    exit;
}

$respStatusCode = $rest->get_ResponseStatusCode();
if ($respStatusCode >= 400) {
    print "Response Status Code = " . $respStatusCode . "\r\n";
    print "Response Header:" . "\r\n";
    print $rest->responseHeader() . "\r\n";
    print "Response Body:" . "\r\n";
    print $sbResponseBody->getAsString() . "\r\n";
    exit;
}

# Success is indicated by a 200 response status.
print "response status code = " . $respStatusCode . "\r\n";

$json = chilkat::CkJsonObject->new();
$json->LoadSb($sbResponseBody);
$json->put_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...
$jsonPolicy = chilkat::CkJsonObject->new();
$jsonPolicy->Load($json->stringOf("Policy"));
$jsonPolicy->put_EmitCompact(0);

print $jsonPolicy->emit() . "\r\n";
print "----" . "\r\n";

# 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...

$Version = $jsonPolicy->stringOf("Version");
$i = 0;
$count_i = $jsonPolicy->SizeOfArray("Statement");
while ($i < $count_i) {
    $jsonPolicy->put_I($i);
    $Sid = $jsonPolicy->stringOf("Statement[i].Sid");
    $Effect = $jsonPolicy->stringOf("Statement[i].Effect");
    $PrincipalAWS = $jsonPolicy->stringOf("Statement[i].Principal.AWS");
    $Action = $jsonPolicy->stringOf("Statement[i].Action");
    $Resource = $jsonPolicy->stringOf("Statement[i].Resource");
    $i = $i + 1;
}