Mattermost にPC情報を送信する PowerShell

Readme.md

Chat PC Info

主にディスク情報をチャットに送信する PowerShell スクリプトです。 チャットは Mattermost に送信出来ることを確認しています。 これをベースに Slack などにも送信できるんじゃないかと思われます。

パラメータ	内容
$chatUrl	内向きのウェブフックURL
$chatChannel	送信先のチャンネル
$userName	ユーザー名。省略時はホスト名
$iconUrl	ユーザーのアイコンURL
$authorIcon	Attachments の author_icon

ChatPCInfo.ps1

$chatUrl = "https://chat-server/hooks/aaaabbbbccccddddeeeeffffgggg"
$chatChannel = "town-square"
$userName = ""
$iconUrl = "https://www.shareicon.net/data/128x128/2015/09/16/101922_windows_512x512.png"
$authorIcon = "https://www.shareicon.net/data/16x16/2016/03/28/467235_drive_64x64.png"

function ConvertTo-Json20([object]$item) {
    add-type -assembly system.web.extensions
    $ps_js = new-object system.web.script.serialization.javascriptSerializer
    return $ps_js.Serialize($item)
}

$Computer = Get-WmiObject -Class Win32_ComputerSystem
$hostname = $Computer.Name
$OS = Get-WmiObject Win32_OperatingSystem
$Memory = Get-WmiObject -Class Win32_PhysicalMemory | %{ $_.Capacity} | Measure-Object -Sum | %{ ($_.sum) }
$MemoryUsesPer = Get-WmiObject Win32_OperatingSystem | %{(($_.TotalVisibleMemorySize - $_.FreePhysicalMemory)/$_.TotalVisibleMemorySize) * 100}

if ( [string]::IsNullOrEmpty($userName) ){
    $userName = $hostname
}

$Disks = Get-WmiObject Win32_LogicalDisk | Where-Object { $_.DriveType -eq 3 }

$rows = @()
foreach ($Disk in $Disks) {
    $fields = @()

    # ボリューム名
    $VolumeName = $Disk.VolumeName
    if ( [string]::IsNullOrEmpty($VolumeName) ){
        $VolumeName = "Local Disk"
    }
    # ドライブ名
    $DriveName = $Disk.DeviceID
    # サイズ
    $Size = [long]$Disk.Size
    $fields += @{
        short = $true
        title = "Size"
        value = ("{0,6:0.00} GB" -F ($Size / 1GB))
    }
    # 使用量
    $UsedSize = [long]$Disk.Size - [long]$Disk.FreeSpace
    $fields += @{
        short = $true
        title = "Used Size"
        value = ("{0,6:0.00} GB" -F ($UsedSize / 1GB))
    }
    # 空き容量
    $fields += @{
        short = $true
        title = "Free Space"
        value = ("{0,6:0.00} GB" -F ($Disk.FreeSpace / 1GB))
    }
    # 使用率
    $DriveUsesPer = (($UsedSize / $Size) * 100)
    $fields += @{
        short = $true
        title = "Drive Uses Per"
        value = ("{0,6:0.00} %" -F $DriveUsesPer)
    }

    $color = "#26A0DA"
    if ($DriveUsesPer -gt 90) {
        $color = "#DA1917"
    }

    $attachment = @{
        author_name = "{0} ( {1} )" -f $VolumeName, $DriveName
        author_icon = $authorIcon
        author_link = "file://" + $hostname
        color       = $color
        fields      = $fields
    }
    $rows += $attachment
}

$payload = @{
    channel     = $chatChannel
    username    = $userName
    icon_url    = $iconUrl
    text        = "{0} {1} {2} Core {3,6:0.00} GB ({4,3:0} % )`r`n{5} - {6}" -f $OS.Caption, $OS.CSDVersion, $Computer.NumberOfLogicalProcessors, ($Memory / 1GB), $MemoryUsesPer, $Computer.Model, $Computer.Manufacturer
    attachments = $rows
}
$payload = ConvertTo-Json20 $payload
$bytes = [System.Text.Encoding]::UTF8.GetBytes($payload)

# 自己証明書を使うときはこれがないとエラーになる
#add-type @"
#using System.Net;
#    using System.Security.Cryptography.X509Certificates;
#    public class TrustAllCertsPolicy : ICertificatePolicy {
#    public bool CheckValidationResult(
#    ServicePoint srvPoint, X509Certificate certificate,
#    WebRequest request, int certificateProblem) {
#        return true;
#    }
#}
#"@
#[System.Net.ServicePointManager]::CertificatePolicy = New-Object TrustAllCertsPolicy

$request = [System.Net.WebRequest]::Create($chatUrl)
$request.ContentType = "application/json"
$request.Method = "POST"
$request.ContentLength = $bytes.Length

$requestStream = [System.IO.Stream]$request.GetRequestStream()
$requestStream.write($bytes, 0, $bytes.Length)
$requestStream.Close()

[System.Net.WebResponse]$response = $request.GetResponse()
$response.Close()