misc/autodl_files/get_aria2.ps1

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try {
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
} catch {
Write-Error "Outdated operating systems are not supported."
Exit 1
}
$file = 'aria2c.exe'
$url = 'https://uupdump.net/misc/aria2c.exe';
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$hash = 'b9cd71b275af11b63c33457b0f43f2f2675937070c563e195f223efd7fa4c74b';
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function Test-Existence {
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param (
[String]$File
)
return Test-Path -PathType Leaf -Path "files\$File"
}
function Retrieve-File {
param (
[String]$File,
[String]$Url
)
Write-Host -BackgroundColor Black -ForegroundColor Yellow "Downloading ${File}..."
Invoke-WebRequest -UseBasicParsing -Uri $Url -OutFile "files\$File" -ErrorAction Stop
}
function Test-Hash {
param (
[String]$File,
[String]$Hash
)
Write-Host -BackgroundColor Black -ForegroundColor Cyan "Verifying ${File}..."
$fileHash = (Get-FileHash -Path "files\$File" -Algorithm SHA256 -ErrorAction Stop).Hash
return ($fileHash.ToLower() -eq $Hash)
}
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if((Test-Existence -File $file) -and (Test-Hash -File $file -Hash $hash)) {
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Write-Host -BackgroundColor Black -ForegroundColor Green "Ready."
Exit 0
}
if(-not (Test-Path -PathType Container -Path "files")) {
$null = New-Item -Path "files" -ItemType Directory
}
try {
Retrieve-File -File $file -Url $url
} catch {
Write-Host "Failed to download $file"
Write-Host $_
Exit 1
}
if(-not (Test-Hash -File $file -Hash $hash)) {
Write-Error "$file appears to be tampered with"
Exit 1
}
Write-Host -BackgroundColor Black -ForegroundColor Green "Ready."