Perl
Outlook --Download Attachments for a Specific Message

Demonstrates how to download the attachments for a particular email message.
Note: This example requires Chilkat v9.5.0.67 or greater.
Chilkat Perl Downloads

Perl
use chilkat();

$success = 0;

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

$http = chilkat::CkHttp->new();

# Use your previously obtained access token here:
# See the following examples for getting an access token:
#    Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
#    Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
#    Refresh Access Token (Azure AD v2.0 Endpoint).
#    Refresh Access Token (Azure AD Endpoint).

$http->put_AuthToken("MICROSOFT_GRAPH_ACCESS_TOKEN");

$sbResponse = chilkat::CkStringBuilder->new();

# Sends:  GET /users/{user_id | userPrincipalName}/messages/{message_id}/attachments
# Note: It is also possible to use the literal string "me" for the current logged-on user.
# For example: GET /me/messages/{message_id}/attachments

$http->ClearUrlVars();
$http->SetUrlVar("userPrincipalName",'chilkatsoft@outlook.com');

# Assume we already have a message ID from previously listing the messages in a folder
$messageId = "AAMkADYzZWE3YmZmLWU0YzgtNGNkZC04MGE1LWFiYTFlNTRlY2QwYQBGAAAAAAAu7cUXL5YOTrdsUIw7-v8FBwBUcG0qWqkmQYqWLHQataQxAACnwqJUAABUcG0qWqkmQYqWLHQataQxAACnwrnOAAA=";
$http->SetUrlVar("message_id",$messageId);

# Send the request to download the attachments.
$success = $http->QuickGetSb("https://graph.microsoft.com/v1.0/users/{$userPrincipalName}/messages/{$message_id}/attachments",$sbResponse);
if (($success != 1) and ($http->get_LastStatus() == 0)) {
    print $http->lastErrorText() . "\r\n";
    exit;
}

# The attachment data is contained within the JSON response.
$json = chilkat::CkJsonObject->new();
$json->LoadSb($sbResponse);
$json->put_EmitCompact(0);

print "Status code = " . $http->get_LastStatus() . "\r\n";
if ($http->get_LastStatus() != 200) {
    print $json->emit() . "\r\n";
    print "Failed." . "\r\n";
}

# This is a sample JSON response.  The code for parsing and extracting/saving the attachments
# is shown below.

# 	{
# 	  "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#users('chilkatsoft%40outlook.com')/messages('AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAA%3D%3D')/attachments",
# 	  "value": [
# 	    {
# 	      "@odata.type": "#microsoft.graph.fileAttachment",
# 	      "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAAESABAAft6wtbaSJU6sgQLi98DI0Q==",
# 	      "lastModifiedDateTime": "2017-05-10T00:30:51Z",
# 	      "name": "fishing.pdf",
# 	      "contentType": "application/pdf",
# 	      "size": 295680,
# 	      "isInline": false,
# 	      "contentId": "F861B218BE380F44B16933097FDDACFC@namprd20.prod.outlook.com",
# 	      "contentLocation": null,
# 	      "contentBytes": "JVBERi0xLjMKJcfsj6 ... yZWYKMjk0MzY5CiUlRU9GCg=="
# 	    },
# 	    {
# 	      "@odata.type": "#microsoft.graph.fileAttachment",
# 	      "id": "AQMkADAwATM0MDAAMS1iNTcwLWI2NTEtMDACLTAwCgBGAAADsVyfxjDU406Ic4X7ill8xAcA5_vF7TKKdE6bGCRqXyl2PQAAAL8huv8AAADn68XtMop0TpsYJGpfKXY9AAAAwSju2wAAAAESABAAXS7qXQ-iRUCYXnhJpN8Ihg==",
# 	      "lastModifiedDateTime": "2017-05-10T00:30:51Z",
# 	      "name": "testCert.cer",
# 	      "contentType": "application/octet-stream",
# 	      "size": 1674,
# 	      "isInline": false,
# 	      "contentId": "5E51FA33EF0F8941ACC8260395CB1A33@namprd20.prod.outlook.com",
# 	      "contentLocation": null,
# 	      "contentBytes": "MIIFRjCCBC6gAwIBA ... 7pt3C5w=="
# 	    }
# 	  ]
# 	}

$sbSavePath = chilkat::CkStringBuilder->new();
$attachData = chilkat::CkBinData->new();
$lastMod = chilkat::CkDateTime->new();
$fac = chilkat::CkFileAccess->new();

$i = 0;
$numMessages = $json->SizeOfArray("value");
while ($i < $numMessages) {
    $json->put_I($i);

    print "name: " . $json->stringOf("value[i].name") . "\r\n";
    print "contentType: " . $json->stringOf("value[i].contentType") . "\r\n";
    $sizeInBytes = $json->IntOf("value[i].size");
    print "size: " . $sizeInBytes . "\r\n";

    # Extract the data and save to a file.
    $sbSavePath->SetString("qa_output/");
    $sbSavePath->Append($json->stringOf("value[i].name"));

    $attachData->Clear();
    $attachData->AppendEncoded($json->stringOf("value[i].contentBytes"),"base64");
    $attachData->WriteFile($sbSavePath->getAsString());

    # Get the last-modified date/time and set the output file's last-mod date/time..
    $lastMod->SetFromTimestamp($json->stringOf("value[i].lastModifiedDateTime"));
    $fac->SetLastModified($sbSavePath->getAsString(),$lastMod);

    print "----" . "\r\n";

    $i = $i + 1;
}

# The output of the above loop is:
# 
# 	name: fishing.pdf
# 	contentType: application/pdf
# 	size: 295680
# 	----
# 	name: testCert.cer
# 	contentType: application/octet-stream
# 	size: 1674
# 	----
#