Saturday, May 15, 2010

Generating OWA Url's for Mail Items and producing Summary Emails for Public Folders and Mailbox's with Powershell and the EWS Managed API

Its often useful to be able to create a link that will open a specific email within OWA for a variety of different uses (eg RSS feeds, Summary email, Calendar Summary pages etc). With EWS you can get the OWAid which is necessary to form an OWA URL that will be usable by using a covertid operation. Depending on whether you want to show items that are located in mailbox or public folder then you need to use one of two different objects when doing a covertid eg to convert Mailbox Items into the OWA format from a EWS Query

$aiItem = New-Object Microsoft.Exchange.WebServices.Data.AlternateId
$aiItem.Mailbox = "Blah@Blah.com"
$aiItem.UniqueId = $Item.Id.UniqueId
$aiItem.Format = [Microsoft.Exchange.WebServices.Data.IdFormat]::EwsId;
$owaid = $service.ConvertId($aiItem, [Microsoft.Exchange.WebServices.Data.IdFormat]::OwaId)

If its a public folder use the following

$aiItem = New-Object Microsoft.Exchange.WebServices.Data.AlternatePublicFolderItemId
$aiItem.FolderId = $PublicFolder.Id
$aiItem.ItemId = $Item.Id
$aiItem.Format = [Microsoft.Exchange.WebServices.Data.IdFormat]::EwsId;
$owaid = $service.ConvertId($aiItem, [Microsoft.Exchange.WebServices.Data.IdFormat]::OwaId)

To make this usefull we need to combine it with a EWS Query of a mailbox or public folder for example if you want to look at all the email from a specific email address within the last day with a paritcular mailbox's inbox. You need a Searchfilter set like the following.

$SenderName = "alerts@domain.com"
$Sfir = new-object Microsoft.Exchange.WebServices.Data.SearchFilter+IsEqualTo([Microsoft.Exchange.WebServices.Data.EmailMessageSchema]::Sender,$SenderName)
$Sflt = new-object Microsoft.Exchange.WebServices.Data.SearchFilter+IsGreaterThan([Microsoft.Exchange.WebServices.Data.ItemSchema]::DateTimeReceived, $MailDate)

$sfCollection = new-object Microsoft.Exchange.WebServices.Data.SearchFilter+SearchFilterCollection([Microsoft.Exchange.WebServices.Data.LogicalOperator]::And);
$sfCollection.add($Sfir)
$sfCollection.add($Sflt)

The rest of the script can then build a HTML body that consists of a HTML table where the subject is hyperlinked with the OWA URI and the mail is sent via SMTP to a configured Hub server.

I've put an example of a script that does this for a public folder and Mailbox and posted this here the public folder version looks lke the following.

Before using this script you need to configure the first 5 varibles

$MailDate = [system.DateTime]::Now.AddDays(-1)
$pfFolder = "/Folder-offroot/Folder1"
$SenderName = "targetAddress@domain.com"

$sendAlertTo = "Sendalerttoaddress@domain.com"
$sendAlertFrom = "Sendalertfromaddress@domain.com"

$SMTPServer = "HubServerName"

Function FindTargetFolder($FolderPath){
$tfTargetFolder = [Microsoft.Exchange.WebServices.Data.Folder]::Bind($service,[Microsoft.Exchange.WebServices.Data.WellKnownFolderName]::PublicFoldersRoot)
$pfArray = $FolderPath.Split("/")
for ($lint = 1; $lint -lt $pfArray.Length; $lint++) {
$pfArray[$lint]
$fvFolderView = new-object Microsoft.Exchange.WebServices.Data.FolderView(1)
$SfSearchFilter = new-object Microsoft.Exchange.WebServices.Data.SearchFilter+IsEqualTo([Microsoft.Exchange.WebServices.Data.FolderSchema]::DisplayName,$pfArray[$lint])
$findFolderResults = $service.FindFolders($tfTargetFolder.Id,$SfSearchFilter,$fvFolderView)
if ($findFolderResults.TotalCount -gt 0){
foreach($folder in $findFolderResults.Folders){
$tfTargetFolder = $folder
}
}
else{
"Error Folder Not Found"
$tfTargetFolder = $null
break
}
}
$Global:findFolder = $tfTargetFolder
}


$dllpath = "C:\Program Files\Microsoft\Exchange\Web Services\1.0\Microsoft.Exchange.WebServices.dll"
[void][Reflection.Assembly]::LoadFile($dllpath)

$service = New-Object Microsoft.Exchange.WebServices.Data.ExchangeService([Microsoft.Exchange.WebServices.Data.ExchangeVersion]::Exchange2007_SP1)

$windowsIdentity = [System.Security.Principal.WindowsIdentity]::GetCurrent()
$sidbind = "LDAP://<SID=" + $windowsIdentity.user.Value.ToString() + ">"
$aceuser = [ADSI]$sidbind

$service.AutodiscoverUrl($aceuser.mail.ToString())

FindTargetFolder($pfFolder)
$PublicFolder = [Microsoft.Exchange.WebServices.Data.Folder]::Bind($service,$Global:findFolder.Id.UniqueId)

$Sfir = new-object Microsoft.Exchange.WebServices.Data.SearchFilter+IsEqualTo([Microsoft.Exchange.WebServices.Data.EmailMessageSchema]::Sender,$SenderName)
$Sflt = new-object Microsoft.Exchange.WebServices.Data.SearchFilter+IsGreaterThan([Microsoft.Exchange.WebServices.Data.ItemSchema]::DateTimeReceived, $MailDate)

$sfCollection = new-object Microsoft.Exchange.WebServices.Data.SearchFilter+SearchFilterCollection([Microsoft.Exchange.WebServices.Data.LogicalOperator]::And);
$sfCollection.add($Sfir)
$sfCollection.add($Sflt)


$rpReport = $rpReport + "<table><tr bgcolor=`"#95aedc`">"
$rpReport = $rpReport + "<td align=`"center`" style=`"width:15%;`" ><b>Recieved</b></td>"
$rpReport = $rpReport + "<td align=`"center`" style=`"width:20%;`" ><b>From</b></td>"
$rpReport = $rpReport + "<td align=`"center`" style=`"width:20%;`" ><b>To</b></td>"
$rpReport = $rpReport + "<td align=`"center`" style=`"width:40%;`" ><b>Subject</b></td>"
$rpReport = $rpReport + "<td align=`"center`" style=`"width:5%;`" ><b>Size</b></td>"
$rpReport = $rpReport + "</tr>"

$view = new-object Microsoft.Exchange.WebServices.Data.ItemView(1000)
$fiFindItemsResult = $PublicFolder.FindItems($sfCollection,$view)
foreach($Item in $fiFindItemsResult.items){
$aiItem = New-Object Microsoft.Exchange.WebServices.Data.AlternatePublicFolderItemId
$aiItem.FolderId = $PublicFolder.Id
$aiItem.ItemId = $Item.Id
$aiItem.Format = [Microsoft.Exchange.WebServices.Data.IdFormat]::EwsId;
$CasServer = $service.Url.Host.ToString()
$openType = "ae=Item";
$owaid = $service.ConvertId($aiItem, [Microsoft.Exchange.WebServices.Data.IdFormat]::OwaId)
$Item.load()
$OWAURL = "https://" + $CasServer + "/owa/?" + $openType + "&t=" + $Item.ItemClass + "&id=" + $owaid.ItemId
$rpReport = $rpReport + " <tr>" + " "
$rpReport = $rpReport + "<td>" + $Item.DateTimeReceived.ToString() + "</td>" + " "
$rpReport = $rpReport + "<td>" + $Item.From.Address + "</td>" + " "
$rpReport = $rpReport + "<td>" + $Item.ToRecipients[0].Address + "</td>" + " "
$rpReport = $rpReport + "<td><a href=`"" + $OWAURL + "`">" + $Item.Subject + "</a></td>" + " "
$rpReport = $rpReport + "<td>" + $Item.Size + "</td>" + " "
$rpReport = $rpReport + "</tr>" + " "

}

$rpReport = $rpReport + "</table>" + " "
$SmtpClient = new-object system.net.mail.smtpClient
$SmtpClient.host = $SMTPServer
$MailMessage = new-object System.Net.Mail.MailMessage
$MailMessage.To.Add($sendAlertTo)
$MailMessage.From = $sendAlertFrom
$MailMessage.Subject = "Summary Email"
$MailMessage.IsBodyHtml = $TRUE
$MailMessage.body = $rpReport
$SMTPClient.Send($MailMessage)