public/Invoke-AxisWebApi.ps1
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<#
.SYNOPSIS Invokes a web API on an Axis device. .DESCRIPTION The Invoke-AxisWebApi function is used to send HTTP requests to an Axis device's web API. It supports both HTTP and HTTPS protocols. This function handles authentication, header customization, and error handling. .PARAMETER Path The path of the API endpoint to be called. .PARAMETER Device The IP address or hostname of the Axis device. If not specified, the function will use the current device configured in the module's configuration. .PARAMETER Method The HTTP method to be used for the request. The default value is "GET". .PARAMETER Body The body of the request. This parameter is used when making POST requests. .PARAMETER Headers A hashtable containing custom headers to be included in the request. .PARAMETER InFile The path to a file to be included in the request. This parameter is used when uploading files. Currentlky not implemented .PARAMETER NoAuth A switch parameter indicating whether to skip authentication. By default, authentication is enabled. .EXAMPLE Invoke-AxisWebApi -Path "/axis-cgi/param.cgi?action=list" -Device "192.168.0.100" -Method "GET" Invokes the web API on the Axis device with the specified path using the GET method. .EXAMPLE Invoke-AxisWebApi -Path "/axis-cgi/param.cgi?action=set" -Device "192.168.0.100" -Method "POST" -Body @{param1="value1"; param2="value2"} Invokes the web API on the Axis device with the specified path using the POST method and includes a JSON body. .NOTES This function requires the Axis PowerShell module to be imported. #> function Invoke-AxisWebApi { [cmdletbinding()] Param( [Parameter(Mandatory=$true)] [String]$Path, [Parameter(Mandatory=$false)] [String]$Device=$Config.CurrentDevice, [Parameter(Mandatory=$false)] [String]$Method="GET", [Parameter(Mandatory=$false)] $Body, [Parameter(Mandatory=$false)] [Switch]$WebRequest, [Parameter(Mandatory=$false)] [String]$OutFile, [Parameter(Mandatory=$false)] [Switch]$NoAuth=$false ) #Build Headers $RequestHeaders = $Config.Headers.Clone() # if($Headers) { # ForEach ($h in $Headers.Keys) { # $RequestHeaders.Add($h,$Headers[$h]) # } # } #Init allows us to set HTTP for cameras not configured for HTTPS Initialize-AxisCache -Device $Device $baseUrl = "$($Cache.$Device.Type)://$Device" $Param = @{ Method = $Method UseBasicParsing = $true Uri = "$baseUrl$Path" Headers = $RequestHeaders Verbose = $false } if(!$NoAuth) { Check-Credential $Param.Add('Credential',$Config.Credential) } if($Body) { $Param.Method = 'Post' $Param.Add('Body',(ConvertTo-JSON -Depth 10 $Body)) } if($OutFile) { $Param.Add('OutFile',$OutFile) } Write-Verbose "$($Param.Method) $($Param.Uri)" #Unsafe header Parsing as older devices can commit porotocol violations #Disable Certificate Validation as the user may try to connect to devices with invalid addresses Set-UseUnsafeHeaderParsing -Disable Set-CertificateValidation -Disable $ConnectionError = $false $Connected = $false Try { if($WebRequest) { $response = Invoke-WebRequest @Param } else { $response = Invoke-RestMethod @Param } $Connected = $true } Catch { Write-Verbose "Failed to connect to $Device using HTTPS, trying HTTP" } if(!$Connected) { Try { #If HTTPS call fails, try HTTP $Param.Uri = "http://$Device$($Path)" if($WebRequest) { $response = Invoke-WebRequest @Param } else { $response = Invoke-RestMethod @Param } $Connected = $true } Catch { Write-Verbose "Failed to connect to $Device using HTTP" $ConnectionError = $_ } } #Regardless of Success or Failure, re-enable safe header parsing and Cert Validation Set-UseUnsafeHeaderParsing -Enable #Set-CertificateValidation -Enable if(!$Connected) { Throw $ConnectionError } return $response } |