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ansible/test/support/windows-integration/plugins/modules/win_get_url.ps1

275 lines
11 KiB
PowerShell

#!powershell
# Copyright: (c) 2015, Paul Durivage <paul.durivage@rackspace.com>
# Copyright: (c) 2015, Tal Auslander <tal@cloudshare.com>
# Copyright: (c) 2017, Dag Wieers <dag@wieers.com>
# Copyright: (c) 2019, Viktor Utkin <viktor_utkin@epam.com>
# Copyright: (c) 2019, Uladzimir Klybik <uladzimir_klybik@epam.com>
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
#AnsibleRequires -CSharpUtil Ansible.Basic
#Requires -Module Ansible.ModuleUtils.FileUtil
#Requires -Module Ansible.ModuleUtils.WebRequest
$spec = @{
options = @{
url = @{ type="str"; required=$true }
dest = @{ type='path'; required=$true }
force = @{ type='bool'; default=$true }
checksum = @{ type='str' }
checksum_algorithm = @{ type='str'; default='sha1'; choices = @("md5", "sha1", "sha256", "sha384", "sha512") }
checksum_url = @{ type='str' }
# Defined for the alias backwards compatibility, remove once aliases are removed
url_username = @{
aliases = @("user", "username")
deprecated_aliases = @(
@{ name = "user"; version = "2.14" },
@{ name = "username"; version = "2.14" }
)
}
url_password = @{
aliases = @("password")
deprecated_aliases = @(
@{ name = "password"; version = "2.14" }
)
}
}
mutually_exclusive = @(
,@('checksum', 'checksum_url')
)
supports_check_mode = $true
}
$module = [Ansible.Basic.AnsibleModule]::Create($args, $spec, @(Get-AnsibleWebRequestSpec))
$url = $module.Params.url
$dest = $module.Params.dest
$force = $module.Params.force
$checksum = $module.Params.checksum
$checksum_algorithm = $module.Params.checksum_algorithm
$checksum_url = $module.Params.checksum_url
$module.Result.elapsed = 0
$module.Result.url = $url
Function Get-ChecksumFromUri {
param(
[Parameter(Mandatory=$true)][Ansible.Basic.AnsibleModule]$Module,
[Parameter(Mandatory=$true)][Uri]$Uri,
[Uri]$SourceUri
)
$script = {
param($Response, $Stream)
$read_stream = New-Object -TypeName System.IO.StreamReader -ArgumentList $Stream
$web_checksum = $read_stream.ReadToEnd()
$basename = (Split-Path -Path $SourceUri.LocalPath -Leaf)
$basename = [regex]::Escape($basename)
$web_checksum_str = $web_checksum -split '\r?\n' | Select-String -Pattern $("\s+\.?\/?\\?" + $basename + "\s*$")
if (-not $web_checksum_str) {
$Module.FailJson("Checksum record not found for file name '$basename' in file from url: '$Uri'")
}
$web_checksum_str_splitted = $web_checksum_str[0].ToString().split(" ", 2)
$hash_from_file = $web_checksum_str_splitted[0].Trim()
# Remove any non-alphanumeric characters
$hash_from_file = $hash_from_file -replace '\W+', ''
Write-Output -InputObject $hash_from_file
}
$web_request = Get-AnsibleWebRequest -Uri $Uri -Module $Module
try {
Invoke-WithWebRequest -Module $Module -Request $web_request -Script $script
} catch {
$Module.FailJson("Error when getting the remote checksum from '$Uri'. $($_.Exception.Message)", $_)
}
}
Function Compare-ModifiedFile {
<#
.SYNOPSIS
Compares the remote URI resource against the local Dest resource. Will
return true if the LastWriteTime/LastModificationDate of the remote is
newer than the local resource date.
#>
param(
[Parameter(Mandatory=$true)][Ansible.Basic.AnsibleModule]$Module,
[Parameter(Mandatory=$true)][Uri]$Uri,
[Parameter(Mandatory=$true)][String]$Dest
)
$dest_last_mod = (Get-AnsibleItem -Path $Dest).LastWriteTimeUtc
# If the URI is a file we don't need to go through the whole WebRequest
if ($Uri.IsFile) {
$src_last_mod = (Get-AnsibleItem -Path $Uri.AbsolutePath).LastWriteTimeUtc
} else {
$web_request = Get-AnsibleWebRequest -Uri $Uri -Module $Module
$web_request.Method = switch ($web_request.GetType().Name) {
FtpWebRequest { [System.Net.WebRequestMethods+Ftp]::GetDateTimestamp }
HttpWebRequest { [System.Net.WebRequestMethods+Http]::Head }
}
$script = { param($Response, $Stream); $Response.LastModified }
try {
$src_last_mod = Invoke-WithWebRequest -Module $Module -Request $web_request -Script $script
} catch {
$Module.FailJson("Error when requesting 'Last-Modified' date from '$Uri'. $($_.Exception.Message)", $_)
}
}
# Return $true if the Uri LastModification date is newer than the Dest LastModification date
((Get-Date -Date $src_last_mod).ToUniversalTime() -gt $dest_last_mod)
}
Function Get-Checksum {
param(
[Parameter(Mandatory=$true)][String]$Path,
[String]$Algorithm = "sha1"
)
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 }
}
$fs = [System.IO.File]::Open($Path, [System.IO.Filemode]::Open, [System.IO.FileAccess]::Read,
[System.IO.FileShare]::ReadWrite)
try {
$hash = [System.BitConverter]::ToString($sp.ComputeHash($fs)).Replace("-", "").ToLower()
} finally {
$fs.Dispose()
}
return $hash
}
Function Invoke-DownloadFile {
param(
[Parameter(Mandatory=$true)][Ansible.Basic.AnsibleModule]$Module,
[Parameter(Mandatory=$true)][Uri]$Uri,
[Parameter(Mandatory=$true)][String]$Dest,
[String]$Checksum,
[String]$ChecksumAlgorithm
)
# Check $dest parent folder exists before attempting download, which avoids unhelpful generic error message.
$dest_parent = Split-Path -LiteralPath $Dest
if (-not (Test-Path -LiteralPath $dest_parent -PathType Container)) {
$module.FailJson("The path '$dest_parent' does not exist for destination '$Dest', or is not visible to the current user. Ensure download destination folder exists (perhaps using win_file state=directory) before win_get_url runs.")
}
$download_script = {
param($Response, $Stream)
# Download the file to a temporary directory so we can compare it
$tmp_dest = Join-Path -Path $Module.Tmpdir -ChildPath ([System.IO.Path]::GetRandomFileName())
$fs = [System.IO.File]::Create($tmp_dest)
try {
$Stream.CopyTo($fs)
$fs.Flush()
} finally {
$fs.Dispose()
}
$tmp_checksum = Get-Checksum -Path $tmp_dest -Algorithm $ChecksumAlgorithm
$Module.Result.checksum_src = $tmp_checksum
# If the checksum has been set, verify the checksum of the remote against the input checksum.
if ($Checksum -and $Checksum -ne $tmp_checksum) {
$Module.FailJson(("The checksum for {0} did not match '{1}', it was '{2}'" -f $Uri, $Checksum, $tmp_checksum))
}
$download = $true
if (Test-Path -LiteralPath $Dest) {
# Validate the remote checksum against the existing downloaded file
$dest_checksum = Get-Checksum -Path $Dest -Algorithm $ChecksumAlgorithm
# If we don't need to download anything, save the dest checksum so we don't waste time calculating it
# again at the end of the script
if ($dest_checksum -eq $tmp_checksum) {
$download = $false
$Module.Result.checksum_dest = $dest_checksum
$Module.Result.size = (Get-AnsibleItem -Path $Dest).Length
}
}
if ($download) {
Copy-Item -LiteralPath $tmp_dest -Destination $Dest -Force -WhatIf:$Module.CheckMode > $null
$Module.Result.changed = $true
}
}
$web_request = Get-AnsibleWebRequest -Uri $Uri -Module $Module
try {
Invoke-WithWebRequest -Module $Module -Request $web_request -Script $download_script
} catch {
$Module.FailJson("Error downloading '$Uri' to '$Dest': $($_.Exception.Message)", $_)
}
}
# Use last part of url for dest file name if a directory is supplied for $dest
if (Test-Path -LiteralPath $dest -PathType Container) {
$uri = [System.Uri]$url
$basename = Split-Path -Path $uri.LocalPath -Leaf
if ($uri.LocalPath -and $uri.LocalPath -ne '/' -and $basename) {
$url_basename = Split-Path -Path $uri.LocalPath -Leaf
$dest = Join-Path -Path $dest -ChildPath $url_basename
} else {
$dest = Join-Path -Path $dest -ChildPath $uri.Host
}
# Ensure we have a string instead of a PS object to avoid serialization issues
$dest = $dest.ToString()
} elseif (([System.IO.Path]::GetFileName($dest)) -eq '') {
# We have a trailing path separator
$module.FailJson("The destination path '$dest' does not exist, or is not visible to the current user. Ensure download destination folder exists (perhaps using win_file state=directory) before win_get_url runs.")
}
$module.Result.dest = $dest
if ($checksum) {
$checksum = $checksum.Trim().ToLower()
}
if ($checksum_algorithm) {
$checksum_algorithm = $checksum_algorithm.Trim().ToLower()
}
if ($checksum_url) {
$checksum_url = $checksum_url.Trim()
}
# Check for case $checksum variable contain url. If yes, get file data from url and replace original value in $checksum
if ($checksum_url) {
$checksum_uri = [System.Uri]$checksum_url
if ($checksum_uri.Scheme -notin @("file", "ftp", "http", "https")) {
$module.FailJson("Unsupported 'checksum_url' value for '$dest': '$checksum_url'")
}
$checksum = Get-ChecksumFromUri -Module $Module -Uri $checksum_uri -SourceUri $url
}
if ($force -or -not (Test-Path -LiteralPath $dest)) {
# force=yes or dest does not exist, download the file
# Note: Invoke-DownloadFile will compare the checksums internally if dest exists
Invoke-DownloadFile -Module $module -Uri $url -Dest $dest -Checksum $checksum `
-ChecksumAlgorithm $checksum_algorithm
} else {
# force=no, we want to check the last modified dates and only download if they don't match
$is_modified = Compare-ModifiedFile -Module $module -Uri $url -Dest $dest
if ($is_modified) {
Invoke-DownloadFile -Module $module -Uri $url -Dest $dest -Checksum $checksum `
-ChecksumAlgorithm $checksum_algorithm
}
}
if ((-not $module.Result.ContainsKey("checksum_dest")) -and (Test-Path -LiteralPath $dest)) {
# Calculate the dest file checksum if it hasn't already been done
$module.Result.checksum_dest = Get-Checksum -Path $dest -Algorithm $checksum_algorithm
$module.Result.size = (Get-AnsibleItem -Path $dest).Length
}
$module.ExitJson()