Skrypt powłoki użytkownika, który można opublikować w adresie URL?

Question

ja odziedziczyliśmy następujący skrypt Pythona:

import urllib2 
a = urllib2.urlopen('http://mysite/mypage.aspx?action=dosomething') 
a.read() 
a.close() 

i chciałbym go zastąpić skryptu PowerShell. Mam trochę google, ale wszystko, co znajduję, uruchamia okno przeglądarki.

Ten skrypt zostanie zaplanowany, więc chciałbym po prostu "opublikować i zapomnieć", jeśli to możliwe?

Każda pomoc bardzo wdzięcznie otrzymał :)

Answer 1

Oto skrypt pisałem jakiś czas temu, że pokazuje, jak pisać tweety z geotags. To wykorzystuje WebClient.

http://www.ravichaganti.com/blog/?p=979

Wklejenie kodu tutaj dla łatwego odniesienia.

Function ByPass-Proxy { 
    param ([string]$url) 
    $webClient.Proxy.IsBypassed($url) 
} 

Function Get-GeoCoordinates { 
    param ([String]$location) 
    $baseURL = "http://maps.google.com/maps/geo?q=" 
    $apiKey = "Your API Key" 
    $url = $baseURL + $location + "&output=xml&sensor=false&key=" + $apiKey 
    $locCoords = (([xml]($WebClient.DownloadString($url))).kml.Response.Placemark.Point.coordinates) 
    return $locCoords 
} 

Function Send-Tweet { 
    param ([string]$Tweet,[string]$location) 
    $geoCoord = Get-GeoCoordinates $location 
    $long = $geoCoord.Split(",")[0] 
    $lat = $geoCoord.Split(",")[1] 
    $TwitURL = "http://twitter.com/statuses/update.xml" 
    $WebClient.Credentials = $TwitCredentials 
    #$str = [System.Text.Encoding]::UTF8.GetBytes("status=" + $Tweet + "&lat=" + $lat + "&long=" + $long) 
    $str = "status=" + $Tweet + "&lat=" + $lat + "&long=" + $long 
    [System.Net.ServicePointManager]::Expect100Continue = $false 
    $response = $WebClient.UploadString($TwitURL,$str) 
    $response 
} 

function Get-Credential { 
## Grabbed this from http://poshcode.org/1480 

[CmdletBinding(DefaultParameterSetName="Better")] 
PARAM(
    [Parameter(Position=1,Mandatory=$false)] 
    [Alias("Credential")] 
    [PSObject]$UserName=$null, 
    [Parameter(Position=2,Mandatory=$false)] 
    [string]$Title=$null, 
    [Parameter(Position=3,Mandatory=$false)] 
    [string]$Message=$null, 
    [Parameter(Position=4,Mandatory=$false)] 
    [string]$Domain=$null, 
    [Parameter(Mandatory=$false)] 
    [switch]$GenericCredentials, 
    [Parameter(Mandatory=$false)] 
    [switch]$Inline 
) 

PROCESS { 
    if($UserName -is [System.Management.Automation.PSCredential]) { 
     return $UserName 
    } elseif($UserName -ne $null) { 
     $UserName = $UserName.ToString() 
    } 

    if($Inline) { 
     if($Title) { Write-Host $Title } 
     if($Message) { Write-Host $Message } 
     if($Domain) { 
     if($UserName -and $UserName -notmatch "[@\\]") { 
      $UserName = "${Domain}\${UserName}" 
     } 
     } 
     if(!$UserName) { 
     $UserName = Read-Host "User" 
     if(($Domain -OR !$GenericCredentials) -and $UserName -notmatch "[@\\]") { 
      $UserName = "${Domain}\${UserName}" 
     } 
     } 
     return New-Object System.Management.Automation.PSCredential $UserName,$(Read-Host "Password for user $UserName" -AsSecureString) 
    } 
    if($GenericCredentials) { $Credential = "Generic" } else { $Credential = "Domain" } 

    ## Now call the Host.UI method ... if they don't have one, we'll die, yay. 
    ## BugBug? PowerShell.exe disregards the last parameter 
    $Host.UI.PromptForCredential($Title, $Message, $UserName, $Domain, $Credential,"Default") 
} 
} 

$global:webClient = New-Object System.Net.WebClient 
$global:TwitCredentials = Get-Credential -title "Twitter Credentials" -message "Please enter your Twitter username/password" 
If (!(ByPass-Proxy "http://www.twitter.com")) { 
    $global:Webclient.proxy.Credentials = Get-Credential -title "Proxy Credentials" -message "Please enter username/password for Proxy authentication" 
} 

Answer 2

Można użyć klasy Webclient z .NET, zwłaszcza UploadString lub UploadValues. Wykonaj numer New-Object System.Net.WebClient, aby uzyskać obiekt webclient, a reszta powinna być prosta.

Answer 3

Funkcja urlopen wygląda jak HTTP GET. Następnie można użyć WebClient:

$w = New-Object net.webclient 
$w.DownloadString('http://mysite/mypage.aspx?action=dosomething') 

Dla HTTP POST używam tej funkcji:

function Execute-HTTPPostCommand() 
{ 
    param(
    [string] $url = $null, 
    [string] $data = $null, 
    [System.Net.NetworkCredential]$credentials = $null, 
    [string] $contentType = "application/x-www-form-urlencoded", 
    [string] $codePageName = "UTF-8", 
    [string] $userAgent = $null 
); 

    if ($url -and $data) 
    { 
    [System.Net.WebRequest]$webRequest = [System.Net.WebRequest]::Create($url); 
    $webRequest.ServicePoint.Expect100Continue = $false; 
    if ($credentials) 
    { 
     $webRequest.Credentials = $credentials; 
     $webRequest.PreAuthenticate = $true; 
    } 
    $webRequest.ContentType = $contentType; 
    $webRequest.Method = "POST"; 
    if ($userAgent) 
    { 
     $webRequest.UserAgent = $userAgent; 
    } 

    $enc = [System.Text.Encoding]::GetEncoding($codePageName); 
    [byte[]]$bytes = $enc.GetBytes($data); 
    $webRequest.ContentLength = $bytes.Length; 
    [System.IO.Stream]$reqStream = $webRequest.GetRequestStream(); 
    $reqStream.Write($bytes, 0, $bytes.Length); 
    $reqStream.Flush(); 

    $resp = $webRequest.GetResponse(); 
    $rs = $resp.GetResponseStream(); 
    [System.IO.StreamReader]$sr = New-Object System.IO.StreamReader -argumentList $rs; 
    $sr.ReadToEnd(); 
    } 
} 

Answer 4

Począwszy PowerShell v3, można użyć Invoke-WebRequest lub jego alias iwr.

iwr 'http://mysite/mypage.aspx?action=dosomething' 

Jeśli potrzebujesz wyjście takie same jak skrypt Pythona, użyj właściwości odpowiedzi Content.

(Invoke-WebRequest 'http://mysite/mypage.aspx?action=dosomething').Content 

Jak @stej pisał kod Pythona wygląda jak GET, ale jeśli trzeba POST można użyć parametru Method.

iwr 'http://mysite/mypage.aspx?action=dosomething' -Method Post