ansible/lib/ansible/module_utils/powershell.ps1
Dag Wieers aebf6c8c92 powershell.ps1: Ensure Fail-Json() works with Hashtables (#21697)
Without this change a dictionary $result object would be emptied if it
is anything but a PSCustomObject. Now we also support Hashtables.
2017-02-23 23:08:19 -08:00

330 lines
12 KiB
PowerShell

# This particular file snippet, and this file snippet only, is BSD licensed.
# Modules you write using this snippet, which is embedded dynamically by Ansible
# still belong to the author of the module, and may assign their own license
# to the complete work.
#
# Copyright (c), Michael DeHaan <michael.dehaan@gmail.com>, 2014, and others
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
Set-StrictMode -Version 2.0
$ErrorActionPreference = "Stop"
# Helper function to set an "attribute" on a psobject instance in powershell.
# This is a convenience to make adding Members to the object easier and
# slightly more pythonic
# Example: Set-Attr $result "changed" $true
Function Set-Attr($obj, $name, $value)
{
# If the provided $obj is undefined, define one to be nice
If (-not $obj.GetType)
{
$obj = @{ }
}
Try
{
$obj.$name = $value
}
Catch
{
$obj | Add-Member -Force -MemberType NoteProperty -Name $name -Value $value
}
}
# Helper function to convert a powershell object to JSON to echo it, exiting
# the script
# Example: Exit-Json $result
Function Exit-Json($obj)
{
# If the provided $obj is undefined, define one to be nice
If (-not $obj.GetType)
{
$obj = @{ }
}
echo $obj | ConvertTo-Json -Compress -Depth 99
Exit
}
# Helper function to add the "msg" property and "failed" property, convert the
# powershell Hashtable to JSON and echo it, exiting the script
# Example: Fail-Json $result "This is the failure message"
Function Fail-Json($obj, $message = $null)
{
if ($obj -is [hashtable] -or $obj -is [psobject]) {
# Nothing to do
} elseif ($obj -is [string] -and $message -eq $null) {
# If we weren't given 2 args, and the only arg was a string,
# create a new Hashtable and use the arg as the failure message
$message = $obj
$obj = @{ }
} else {
# If the first argument is undefined or a different type,
# make it a Hashtable
$obj = @{ }
}
# Still using Set-Attr for PSObject compatibility
Set-Attr $obj "msg" $message
Set-Attr $obj "failed" $true
echo $obj | ConvertTo-Json -Compress -Depth 99
Exit 1
}
# Helper function to add warnings, even if the warnings attribute was
# not already set up. This is a convenience for the module developer
# so he does not have to check for the attribute prior to adding.
Function Add-Warning($obj, $message)
{
if (Get-Member -InputObject $obj -Name "warnings") {
if ($obj.warnings -is [array]) {
$obj.warnings += $message
} else {
throw "warnings attribute is not an array"
}
} else {
$obj.warnings = ,@( $message )
}
}
# Helper function to add deprecations, even if the deprecations attribute was
# not already set up. This is a convenience for the module developer
# so he does not have to check for the attribute prior to adding.
Function Add-DeprecationWarning($obj, $message, $version = $null)
{
if (Get-Member -InputObject $obj -Name "deprecations") {
if ($obj.deprecations -is [array]) {
$obj.deprecations += @{
msg = $message
version = $version
}
} else {
throw "deprecations attribute is not a list"
}
} else {
$obj.deprecations = ,@(
@{
msg = $message
version = $version
}
)
}
}
# Helper function to expand environment variables in values. By default
# it turns any type to a string, but we ensure $null remains $null.
Function Expand-Environment($value)
{
if ($value -ne $null) {
[System.Environment]::ExpandEnvironmentVariables($value)
} else {
$value
}
}
# Helper function to get an "attribute" from a psobject instance in powershell.
# This is a convenience to make getting Members from an object easier and
# slightly more pythonic
# Example: $attr = Get-AnsibleParam $response "code" -default "1"
#Get-AnsibleParam also supports Parameter validation to save you from coding that manually:
#Example: Get-AnsibleParam -obj $params -name "State" -default "Present" -ValidateSet "Present","Absent" -resultobj $resultobj -failifempty $true
#Note that if you use the failifempty option, you do need to specify resultobject as well.
Function Get-AnsibleParam($obj, $name, $default = $null, $resultobj = @{}, $failifempty = $false, $emptyattributefailmessage, $ValidateSet, $ValidateSetErrorMessage, $type = $null, $aliases = @())
{
# Check if the provided Member $name or aliases exist in $obj and return it or the default.
try {
$found = $null
# First try to find preferred parameter $name
$aliases = @($name) + $aliases
# Iterate over aliases to find acceptable Member $name
foreach ($alias in $aliases) {
if ($obj.ContainsKey($alias)) {
$found = $alias
break
}
}
if ($found -eq $null) {
throw
}
$name = $found
if ($ValidateSet) {
if ($ValidateSet -contains ($obj.$name)) {
$value = $obj.$name
} else {
if ($ValidateSetErrorMessage -eq $null) {
#Auto-generated error should be sufficient in most use cases
$ValidateSetErrorMessage = "Argument $name needs to be one of $($ValidateSet -join ",") but was $($obj.$name)."
}
Fail-Json -obj $resultobj -message $ValidateSetErrorMessage
}
} else {
$value = $obj.$name
}
} catch {
if ($failifempty -eq $false) {
$value = $default
} else {
if (!$emptyattributefailmessage) {
$emptyattributefailmessage = "Missing required argument: $name"
}
Fail-Json -obj $resultobj -message $emptyattributefailmessage
}
}
# If $value -eq $null, the parameter was unspecified
if ($value -ne $null -and $type -eq "path") {
# Expand environment variables on path-type
$value = Expand-Environment($value)
} elseif ($value -ne $null -and $type -eq "str") {
# Convert str types to real Powershell strings
$value = $value.ToString()
} elseif ($value -ne $null -and $type -eq "bool") {
# Convert boolean types to real Powershell booleans
$value = $value | ConvertTo-Bool
} elseif ($value -ne $null -and $type -eq "int") {
# Convert int types to real Powershell integers
$value = $value -as [int]
} elseif ($value -ne $null -and $type -eq "float") {
# Convert float types to real Powershell floats
$value = $value -as [float]
}
return $value
}
#Alias Get-attr-->Get-AnsibleParam for backwards compat. Only add when needed to ease debugging of scripts
If (!(Get-Alias -Name "Get-attr" -ErrorAction SilentlyContinue))
{
New-Alias -Name Get-attr -Value Get-AnsibleParam
}
# Helper filter/pipeline function to convert a value to boolean following current
# Ansible practices
# Example: $is_true = "true" | ConvertTo-Bool
Function ConvertTo-Bool
{
param(
[parameter(valuefrompipeline=$true)]
$obj
)
$boolean_strings = "yes", "on", "1", "true", 1
$obj_string = [string]$obj
if (($obj -is [boolean] -and $obj) -or $boolean_strings -contains $obj_string.ToLower()) {
return $true
} else {
return $false
}
}
# Helper function to parse Ansible JSON arguments from a "file" passed as
# the single argument to the module.
# Example: $params = Parse-Args $args
Function Parse-Args($arguments, $supports_check_mode = $false)
{
$params = New-Object psobject
If ($arguments.Length -gt 0)
{
$params = Get-Content $arguments[0] | ConvertFrom-Json
}
Else {
$params = $complex_args
}
$check_mode = Get-AnsibleParam -obj $params -name "_ansible_check_mode" -type "bool" -default $false
If ($check_mode -and -not $supports_check_mode)
{
Exit-Json @{
skipped = $true
changed = $false
msg = "remote module does not support check mode"
}
}
return $params
}
# Helper function to calculate a hash of a file in a way which powershell 3
# and above can handle:
Function Get-FileChecksum($path, $algorithm = 'sha1')
{
If (Test-Path -Path $path -PathType Leaf)
{
switch ($algorithm)
{
'md5' { $sp = New-Object -TypeName System.Security.Cryptography.MD5CryptoServiceProvider }
'sha1' { $sp = New-Object -TypeName System.Security.Cryptography.SHA1CryptoServiceProvider }
'sha256' { $sp = New-Object -TypeName System.Security.Cryptography.SHA256CryptoServiceProvider }
'sha384' { $sp = New-Object -TypeName System.Security.Cryptography.SHA384CryptoServiceProvider }
'sha512' { $sp = New-Object -TypeName System.Security.Cryptography.SHA512CryptoServiceProvider }
default { Fail-Json @{} "Unsupported hash algorithm supplied '$algorithm'" }
}
If ($PSVersionTable.PSVersion.Major -ge 4) {
$raw_hash = Get-FileHash $path -Algorithm $algorithm
$hash = $raw_hash.Hash.ToLower()
} Else {
$fp = [System.IO.File]::Open($path, [System.IO.Filemode]::Open, [System.IO.FileAccess]::Read, [System.IO.FileShare]::ReadWrite);
$hash = [System.BitConverter]::ToString($sp.ComputeHash($fp)).Replace("-", "").ToLower();
$fp.Dispose();
}
}
ElseIf (Test-Path -Path $path -PathType Container)
{
$hash = "3";
}
Else
{
$hash = "1";
}
return $hash
}
Function Get-PendingRebootStatus
{
# Check if reboot is required, if so notify CA. The MSFT_ServerManagerTasks provider is missing on client SKUs
#Function returns true if computer has a pending reboot
$featureData = invoke-wmimethod -EA Ignore -Name GetServerFeature -namespace root\microsoft\windows\servermanager -Class MSFT_ServerManagerTasks
$regData = Get-ItemProperty "HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager" "PendingFileRenameOperations" -EA Ignore
$CBSRebootStatus = Get-ChildItem "HKLM:\\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing" -ErrorAction SilentlyContinue| where {$_.PSChildName -eq "RebootPending"}
if(($featureData -and $featureData.RequiresReboot) -or $regData -or $CBSRebootStatus)
{
return $True
}
else
{
return $False
}
}
# this line must stay at the bottom to ensure all defined module parts are exported
Export-ModuleMember -Alias * -Function * -Cmdlet *