Loops at a specified interval and monitors emails for titles which RegEx match [identifier] [url] (e.g. mycoolID http://mirror.math.princeton.edu//ubuntu-17.10.1-desktop-amd64.iso) and downloads the files using BITS to a specified storage location. Uses background jobs so there’s no blocking.
Usage: Configure the settings in the script and run it. Then send an email to the email account configure for RSS monitoring. The email subject / tile should contain your unique identifier (whatever random string you choose (configured in the RegEx variable)), a space, and the URL you wish to have downloaded by the script.
If Windows Defender is enabled on your computer, the script will initiate a scan of the files upon download completion.
It is recommended to setup a separate account to do this with since you have to allow “less secure apps” access in your Gmail Security settings.
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| # Monitor Gmail and Download Files Based On Title Contents using RegEx
# Uses the BITS client to download
# If Enabled, Files are scanned with Windows Defender upon download completion
# OPTIONS
# Folder where files will be dropped, no trailing slash \
$FileDrop = "Z:\FileDrop"
# RegEx for Title Matching. Should be [Unique Identifier] [URL] E.G.: 'MYuniqID https://download.com/this/file/here.exe'
# The filename to save in the FileDrop is pulled from the last / of the URL, would be "here.exe" from the example above.
$titleRegEx = '^myCoolID\s(http[s]{0,1}://.*)'
# Frequency to check email in minutes
$freq = 1
# Gmail Account Info (must allow insecure apps in your security settings)
$user = "username@gmail.com"
$pwd = "password1234!"
# Scan downloaded files with Windows Defender upon completion?
$scanFiles = $true
#==============================================================================
cls
$makeItStop = $false
Import -Module BitsTransfer
$ToGrabFiles = New-Object System.Collections.ArrayList
$GrabbedFiles = New-Object System.Collections.ArrayList
$currentJobs = New-Object System.Collections.ArrayList
$doneJobs = New-Object System.Collections.ArrayList
$scannedFiles = New-Object System.Collections.ArrayList
$webclient = new-object System.Net.WebClient
# access the rss-feed - uses your Gmail email address and password
$webclient.Credentials = new-object System.Net.NetworkCredential ($user, $pwd)
Do {
# download the rss as xml from google
[xml]$xml = $webclient.DownloadString ("https://mail.google.com/mail/feed/atom")
# check each email
ForEach ($email in $xml.feed.entry ){
If ($email.title -match $titleRegEx){ # does the email title match our regex for ID and URL?
$grab = [pscustomobject ] @{URL = $matches[1]}
If ($GrabbedFiles -notcontains $grab.URL -and $ToGrabFiles -notcontains $grab.URL ){
$null = $ToGrabFiles.Add ($grab.URL )
Write-Host "Added $($grab.URL) to the download list" -ForegroundColor Green
}
}
}
# check each URL found in the email titles
ForEach ($URL in $ToGrabFiles){
If ($GrabbedFiles -notcontains $URL){
$fileName = $URL.Substring ($url.LastIndexOf ("/") + 1)
$saveFileName = "$FileDrop\$filename"
If (!(Test-Path $saveFileName) ){
$newJob = Start -Job -ScriptBlock {
param ([string]$URL, [string]$saveFileName)
Start -BitsTransfer -Source $URL -Destination $saveFileName -ErrorVariable jobErr -ErrorAction SilentlyContinue;
Write-Output $URL;
} -ArgumentList $URL, $saveFileName
$null = $currentJobs.Add ($newJob.Id )
$null = $GrabbedFiles.Add ($URL)
}Else{
Write-Output "$saveFileName already exists - skipping!"
$null = $GrabbedFiles.Add ($URL)
}
}Else{
#"File already grabbed!"
}
}
ForEach ($job in $currentJobs){
If ($doneJobs -notcontains $job){
$status = Get -Job -Id $job
If ($status.State -eq 'Completed' -and $status.HasMoreData -eq 'True'){
Do{
$result = Receive -Job -id $job
Write-Host "$result :: $($status.state)" -ForegroundColor Green
}Until($result -eq $null)
$null = Stop -Job -Id $job
$null = Remove -Job -Id $job
$null = $doneJobs.Add ($job)
}ElseIf ($status.State -eq 'Running'){
Do{
$result = Receive -Job -id $job
Write-Host "$result :: $($status.state)" -ForegroundColor Cyan
}Until($result -eq $null)
}
sleep -Seconds 1
}
}
ForEach ($done in $doneJobs){
$currentJobs.Remove ($done)
}
If ($scanFiles -eq $true){
ForEach ($file in Get-ChildItem -Exclude "*.tmp" -LiteralPath $FileDrop | where {$scannedFiles -notcontains $_.Name }){
If (Get-Service windefend -ErrorAction SilentlyContinue | where {$_.status -eq "Running"}) {
$scan = Start -MpScan -ScanPath $file.FullName -ScanType QuickScan
$null = $scannedFiles.Add ($File.Name )
}Else{
Write-Output "Windows Defender is not running. Unable to scan file: $($file.FullName)"
$svc = Get-Service windefend -ErrorAction SilentlyContinue | select status
Write-Output "Windows Defender Service is: $($svc.Status)"
}
}
}
Write-Output "Sleeping for $freq minutes... Press CTRL+C to Quit"
sleep -Seconds ($freq * 60)
} Until ($makeItStop -eq $true) |
