在现有脚本中更改 DNS 查找

Question

我有一个解析日志文件的脚本，它匹配 IP、消息号、日期和 DNS 名称。但是因为我用每一行解析 DNS，所以我解析它需要很长时间。在我获得所有匹配项后，我将它们一起计算以了解哪个 ip 发送了多少消息。现有脚本为：

$global:result = Get-Content $path | ForEach-Object {
    if($_ -match '(\d{2}\.\d{2}\.\d{4} \d{2}:\d{2}:\d{2}).*\(((?:\d{1,3}\.){3}\d{1,3})\) disconnected\.?\s+(\d+) message\[s\]'){
        try {
            #$dns = [System.Net.Dns]::GetHostEntry($matches[2]).HostName
        }
        catch { 
            #$dns = 'Not available' 
        }
        [PsCustomObject]@{
            IP       = $matches[2]
            Messages = [int]$matches[3]
            #DNSName  = $dns
            Date     = [datetime]::ParseExact($matches[1], 'dd.MM.yyyy HH:mm:ss', $null)
        }}

        $i++
    if($i % 1000 -eq 0){
        Write-Progress -activity "Searching for matches" -status "Scanned: $i of $($length)" -percentComplete (($i / $length)  * 100)
    
 }}

 Write-Progress -activity "Searching for matches" -status "Scanned: $i of $($length)" -percentComplete (($i / $length)  * 100)

 #Messages Counted
 $global:cumulative = $result | Group-Object -Property IP | ForEach-Object {
    [PsCustomObject]@{
        IP = $_.Name
        Messages = ($_.Group | Measure-Object -Property Messages -Sum).Sum
        #DNSName = $_.Group[0].DNSName
        Date    = ($_.Group | Sort-Object Date)[-1].Date
    }
}

在对日志文件中获得的所有不同 IP 进行排序并仍将其显示为 $cumulative 中的结果之一后，我如何进行 DNS 解析？

Answer 1

只需将代码移动到您为 $global:cumulative 定义自定义对象的位置：

$global:result = Get-Content $path | ForEach-Object {
    if($_ -match '(\d{2}\.\d{2}\.\d{4} \d{2}:\d{2}:\d{2}).*\(((?:\d{1,3}\.){3}\d{1,3})\) disconnected\.?\s+(\d+) message\[s\]'){
        [PsCustomObject]@{
            IP       = $matches[2]
            Messages = [int]$matches[3]
            Date     = [datetime]::ParseExact($matches[1], 'dd.MM.yyyy HH:mm:ss', $null)
        }}

        $i++
    if($i % 1000 -eq 0){
        Write-Progress -activity "Searching for matches" -status "Scanned: $i of $($length)" -percentComplete (($i / $length)  * 100)
    
 }}

 Write-Progress -activity "Searching for matches" -status "Scanned: $i of $($length)" -percentComplete (($i / $length)  * 100)

 #Messages Counted
 $global:cumulative = $result | Group-Object -Property IP | ForEach-Object {

    try {
        $dns = [System.Net.Dns]::GetHostEntry($_.Name).HostName
    }
    catch { 
        $dns = 'Not available' 
    }

    [PsCustomObject]@{
        IP = $_.Name
        Messages = ($_.Group | Measure-Object -Property Messages -Sum).Sum
        DNSName = $dns
        Date    = ($_.Group | Sort-Object Date)[-1].Date
    }
}

在现有脚本中更改 DNS 查找

Change DNS Lookup in existing script

powershell

resolve