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Fix a possible issue with comparing values with $null (#37763)

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This PR includes:
- Fix $null comparison.
- Simplify Get-AnsibleParam in the same effort
This commit is contained in:
Dag Wieers 2018-11-19 00:28:04 +01:00 committed by Jordan Borean
parent f69e3e1cec
commit 5f6a350b3a
1 changed files with 43 additions and 43 deletions
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86
lib/ansible/module_utils/powershell/Ansible.ModuleUtils.Legacy.psm1
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@ -201,54 +201,54 @@ Function Get-AnsibleParam($obj, $name, $default = $null, $resultobj = @{}, $fail
}
}
# If $value -eq $null, the parameter was unspecified by the user (deliberately or not)
# If $null -eq $value, the parameter was unspecified by the user (deliberately or not)
# Please leave $null-values intact, modules need to know if a parameter was specified
# When $value is already an array, we cannot rely on the null check, as an empty list
# is seen as null in the check below
if ($null -ne $value -or $value -is [array]) {
if ($type -eq "path") {
# Expand environment variables on path-type
$value = Expand-Environment($value)
# Test if a valid path is provided
if (-not (Test-Path -IsValid $value)) {
$path_invalid = $true
# could still be a valid-shaped path with a nonexistent drive letter
if ($value -match "^\w:") {
# rewrite path with a valid drive letter and recheck the shape- this might still fail, eg, a nonexistent non-filesystem PS path
if (Test-Path -IsValid $(@(Get-PSDrive -PSProvider Filesystem)[0].Name + $value.Substring(1))) {
$path_invalid = $false
}
}
if ($path_invalid) {
Fail-Json -obj $resultobj -message "Get-AnsibleParam: Parameter '$name' has an invalid path '$value' specified."
if ($null -eq $value) {
return $null
}
if ($type -eq "path") {
# Expand environment variables on path-type
$value = Expand-Environment($value)
# Test if a valid path is provided
if (-not (Test-Path -IsValid $value)) {
$path_invalid = $true
# could still be a valid-shaped path with a nonexistent drive letter
if ($value -match "^\w:") {
# rewrite path with a valid drive letter and recheck the shape- this might still fail, eg, a nonexistent non-filesystem PS path
if (Test-Path -IsValid $(@(Get-PSDrive -PSProvider Filesystem)[0].Name + $value.Substring(1))) {
$path_invalid = $false
}
}
} elseif ($type -eq "str") {
# Convert str types to real Powershell strings
$value = $value.ToString()
} elseif ($type -eq "bool") {
# Convert boolean types to real Powershell booleans
$value = $value | ConvertTo-Bool
} elseif ($type -eq "int") {
# Convert int types to real Powershell integers
$value = $value -as [int]
} elseif ($type -eq "float") {
# Convert float types to real Powershell floats
$value = $value -as [float]
} elseif ($type -eq "list") {
if ($value -is [array]) {
# Nothing to do
} elseif ($value -is [string]) {
# Convert string type to real Powershell array
$value = $value.Split(",").Trim()
} elseif ($value -is [int]) {
$value = @($value)
} else {
Fail-Json -obj $resultobj -message "Get-AnsibleParam: Parameter '$name' is not a YAML list."
if ($path_invalid) {
Fail-Json -obj $resultobj -message "Get-AnsibleParam: Parameter '$name' has an invalid path '$value' specified."
}
# , is not a typo, forces it to return as a list when it is empty or only has 1 entry
return ,$value
}
} elseif ($type -eq "str") {
# Convert str types to real Powershell strings
$value = $value.ToString()
} elseif ($type -eq "bool") {
# Convert boolean types to real Powershell booleans
$value = $value | ConvertTo-Bool
} elseif ($type -eq "int") {
# Convert int types to real Powershell integers
$value = $value -as [int]
} elseif ($type -eq "float") {
# Convert float types to real Powershell floats
$value = $value -as [float]
} elseif ($type -eq "list") {
if ($value -is [array]) {
# Nothing to do
} elseif ($value -is [string]) {
# Convert string type to real Powershell array
$value = $value.Split(",").Trim()
} elseif ($value -is [int]) {
$value = @($value)
} else {
Fail-Json -obj $resultobj -message "Get-AnsibleParam: Parameter '$name' is not a YAML list."
}
# , is not a typo, forces it to return as a list when it is empty or only has 1 entry
return ,$value
}
return $value