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

451 lines
12 KiB
PowerShell

#!powershell
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
#Requires -Module Ansible.ModuleUtils.Legacy
#Requires -Module Ansible.ModuleUtils.Backup
function WriteLines($outlines, $path, $linesep, $encodingobj, $validate, $check_mode) {
Try {
$temppath = [System.IO.Path]::GetTempFileName();
}
Catch {
Fail-Json @{} "Cannot create temporary file! ($($_.Exception.Message))";
}
$joined = $outlines -join $linesep;
[System.IO.File]::WriteAllText($temppath, $joined, $encodingobj);
If ($validate) {
If (-not ($validate -like "*%s*")) {
Fail-Json @{} "validate must contain %s: $validate";
}
$validate = $validate.Replace("%s", $temppath);
$parts = [System.Collections.ArrayList] $validate.Split(" ");
$cmdname = $parts[0];
$cmdargs = $validate.Substring($cmdname.Length + 1);
$process = [Diagnostics.Process]::Start($cmdname, $cmdargs);
$process.WaitForExit();
If ($process.ExitCode -ne 0) {
[string] $output = $process.StandardOutput.ReadToEnd();
[string] $error = $process.StandardError.ReadToEnd();
Remove-Item $temppath -force;
Fail-Json @{} "failed to validate $cmdname $cmdargs with error: $output $error";
}
}
# Commit changes to the path
$cleanpath = $path.Replace("/", "\");
Try {
Copy-Item -Path $temppath -Destination $cleanpath -Force -WhatIf:$check_mode;
}
Catch {
Fail-Json @{} "Cannot write to: $cleanpath ($($_.Exception.Message))";
}
Try {
Remove-Item -Path $temppath -Force -WhatIf:$check_mode;
}
Catch {
Fail-Json @{} "Cannot remove temporary file: $temppath ($($_.Exception.Message))";
}
return $joined;
}
# Implement the functionality for state == 'present'
function Present($path, $regex, $line, $insertafter, $insertbefore, $create, $backup, $backrefs, $validate, $encodingobj, $linesep, $check_mode, $diff_support) {
# Note that we have to clean up the path because ansible wants to treat / and \ as
# interchangeable in windows pathnames, but .NET framework internals do not support that.
$cleanpath = $path.Replace("/", "\");
# Check if path exists. If it does not exist, either create it if create == "yes"
# was specified or fail with a reasonable error message.
If (-not (Test-Path -LiteralPath $path)) {
If (-not $create) {
Fail-Json @{} "Path $path does not exist !";
}
# Create new empty file, using the specified encoding to write correct BOM
[System.IO.File]::WriteAllLines($cleanpath, "", $encodingobj);
}
# Initialize result information
$result = @{
backup = "";
changed = $false;
msg = "";
}
# Read the dest file lines using the indicated encoding into a mutable ArrayList.
$before = [System.IO.File]::ReadAllLines($cleanpath, $encodingobj)
If ($null -eq $before) {
$lines = New-Object System.Collections.ArrayList;
}
Else {
$lines = [System.Collections.ArrayList] $before;
}
if ($diff_support) {
$result.diff = @{
before = $before -join $linesep;
}
}
# Compile the regex specified, if provided
$mre = $null;
If ($regex) {
$mre = New-Object Regex $regex, 'Compiled';
}
# Compile the regex for insertafter or insertbefore, if provided
$insre = $null;
If ($insertafter -and $insertafter -ne "BOF" -and $insertafter -ne "EOF") {
$insre = New-Object Regex $insertafter, 'Compiled';
}
ElseIf ($insertbefore -and $insertbefore -ne "BOF") {
$insre = New-Object Regex $insertbefore, 'Compiled';
}
# index[0] is the line num where regex has been found
# index[1] is the line num where insertafter/insertbefore has been found
$index = -1, -1;
$lineno = 0;
# The latest match object and matched line
$matched_line = "";
# Iterate through the lines in the file looking for matches
Foreach ($cur_line in $lines) {
If ($regex) {
$m = $mre.Match($cur_line);
$match_found = $m.Success;
If ($match_found) {
$matched_line = $cur_line;
}
}
Else {
$match_found = $line -ceq $cur_line;
}
If ($match_found) {
$index[0] = $lineno;
}
ElseIf ($insre -and $insre.Match($cur_line).Success) {
If ($insertafter) {
$index[1] = $lineno + 1;
}
If ($insertbefore) {
$index[1] = $lineno;
}
}
$lineno = $lineno + 1;
}
If ($index[0] -ne -1) {
If ($backrefs) {
$new_line = [regex]::Replace($matched_line, $regex, $line);
}
Else {
$new_line = $line;
}
If ($lines[$index[0]] -cne $new_line) {
$lines[$index[0]] = $new_line;
$result.changed = $true;
$result.msg = "line replaced";
}
}
ElseIf ($backrefs) {
# No matches - no-op
}
ElseIf ($insertbefore -eq "BOF" -or $insertafter -eq "BOF") {
$lines.Insert(0, $line);
$result.changed = $true;
$result.msg = "line added";
}
ElseIf ($insertafter -eq "EOF" -or $index[1] -eq -1) {
$lines.Add($line) > $null;
$result.changed = $true;
$result.msg = "line added";
}
Else {
$lines.Insert($index[1], $line);
$result.changed = $true;
$result.msg = "line added";
}
# Write changes to the path if changes were made
If ($result.changed) {
# Write backup file if backup == "yes"
If ($backup) {
$result.backup_file = Backup-File -path $path -WhatIf:$check_mode
# Ensure backward compatibility (deprecate in future)
$result.backup = $result.backup_file
}
$writelines_params = @{
outlines = $lines
path = $path
linesep = $linesep
encodingobj = $encodingobj
validate = $validate
check_mode = $check_mode
}
$after = WriteLines @writelines_params;
if ($diff_support) {
$result.diff.after = $after;
}
}
$result.encoding = $encodingobj.WebName;
Exit-Json $result;
}
# Implement the functionality for state == 'absent'
function Absent($path, $regex, $line, $backup, $validate, $encodingobj, $linesep, $check_mode, $diff_support) {
# Check if path exists. If it does not exist, fail with a reasonable error message.
If (-not (Test-Path -LiteralPath $path)) {
Fail-Json @{} "Path $path does not exist !";
}
# Initialize result information
$result = @{
backup = "";
changed = $false;
msg = "";
}
# Read the dest file lines using the indicated encoding into a mutable ArrayList. Note
# that we have to clean up the path because ansible wants to treat / and \ as
# interchangeable in windows pathnames, but .NET framework internals do not support that.
$cleanpath = $path.Replace("/", "\");
$before = [System.IO.File]::ReadAllLines($cleanpath, $encodingobj);
If ($null -eq $before) {
$lines = New-Object System.Collections.ArrayList;
}
Else {
$lines = [System.Collections.ArrayList] $before;
}
if ($diff_support) {
$result.diff = @{
before = $before -join $linesep;
}
}
# Compile the regex specified, if provided
$cre = $null;
If ($regex) {
$cre = New-Object Regex $regex, 'Compiled';
}
$found = New-Object System.Collections.ArrayList;
$left = New-Object System.Collections.ArrayList;
Foreach ($cur_line in $lines) {
If ($regex) {
$m = $cre.Match($cur_line);
$match_found = $m.Success;
}
Else {
$match_found = $line -ceq $cur_line;
}
If ($match_found) {
$found.Add($cur_line) > $null;
$result.changed = $true;
}
Else {
$left.Add($cur_line) > $null;
}
}
# Write changes to the path if changes were made
If ($result.changed) {
# Write backup file if backup == "yes"
If ($backup) {
$result.backup_file = Backup-File -path $path -WhatIf:$check_mode
# Ensure backward compatibility (deprecate in future)
$result.backup = $result.backup_file
}
$writelines_params = @{
outlines = $left
path = $path
linesep = $linesep
encodingobj = $encodingobj
validate = $validate
check_mode = $check_mode
}
$after = WriteLines @writelines_params;
if ($diff_support) {
$result.diff.after = $after;
}
}
$result.encoding = $encodingobj.WebName;
$result.found = $found.Count;
$result.msg = "$($found.Count) line(s) removed";
Exit-Json $result;
}
# Parse the parameters file dropped by the Ansible machinery
$params = Parse-Args $args -supports_check_mode $true;
$check_mode = Get-AnsibleParam -obj $params -name "_ansible_check_mode" -type "bool" -default $false;
$diff_support = Get-AnsibleParam -obj $params -name "_ansible_diff" -type "bool" -default $false;
# Initialize defaults for input parameters.
$path = Get-AnsibleParam -obj $params -name "path" -type "path" -failifempty $true -aliases "dest","destfile","name";
$regex = Get-AnsibleParam -obj $params -name "regex" -type "str" -aliases "regexp";
$state = Get-AnsibleParam -obj $params -name "state" -type "str" -default "present" -validateset "present","absent";
$line = Get-AnsibleParam -obj $params -name "line" -type "str";
$backrefs = Get-AnsibleParam -obj $params -name "backrefs" -type "bool" -default $false;
$insertafter = Get-AnsibleParam -obj $params -name "insertafter" -type "str";
$insertbefore = Get-AnsibleParam -obj $params -name "insertbefore" -type "str";
$create = Get-AnsibleParam -obj $params -name "create" -type "bool" -default $false;
$backup = Get-AnsibleParam -obj $params -name "backup" -type "bool" -default $false;
$validate = Get-AnsibleParam -obj $params -name "validate" -type "str";
$encoding = Get-AnsibleParam -obj $params -name "encoding" -type "str" -default "auto";
$newline = Get-AnsibleParam -obj $params -name "newline" -type "str" -default "windows" -validateset "unix","windows";
# Fail if the path is not a file
If (Test-Path -LiteralPath $path -PathType "container") {
Fail-Json @{} "Path $path is a directory";
}
# Default to windows line separator - probably most common
$linesep = "`r`n"
If ($newline -eq "unix") {
$linesep = "`n";
}
# Figure out the proper encoding to use for reading / writing the target file.
# The default encoding is UTF-8 without BOM
$encodingobj = [System.Text.UTF8Encoding] $false;
# If an explicit encoding is specified, use that instead
If ($encoding -ne "auto") {
$encodingobj = [System.Text.Encoding]::GetEncoding($encoding);
}
# Otherwise see if we can determine the current encoding of the target file.
# If the file doesn't exist yet (create == 'yes') we use the default or
# explicitly specified encoding set above.
ElseIf (Test-Path -LiteralPath $path) {
# Get a sorted list of encodings with preambles, longest first
$max_preamble_len = 0;
$sortedlist = New-Object System.Collections.SortedList;
Foreach ($encodinginfo in [System.Text.Encoding]::GetEncodings()) {
$encoding = $encodinginfo.GetEncoding();
$plen = $encoding.GetPreamble().Length;
If ($plen -gt $max_preamble_len) {
$max_preamble_len = $plen;
}
If ($plen -gt 0) {
$sortedlist.Add(-($plen * 1000000 + $encoding.CodePage), $encoding) > $null;
}
}
# Get the first N bytes from the file, where N is the max preamble length we saw
[Byte[]]$bom = Get-Content -Encoding Byte -ReadCount $max_preamble_len -TotalCount $max_preamble_len -LiteralPath $path;
# Iterate through the sorted encodings, looking for a full match.
$found = $false;
Foreach ($encoding in $sortedlist.GetValueList()) {
$preamble = $encoding.GetPreamble();
If ($preamble -and $bom) {
Foreach ($i in 0..($preamble.Length - 1)) {
If ($i -ge $bom.Length) {
break;
}
If ($preamble[$i] -ne $bom[$i]) {
break;
}
ElseIf ($i + 1 -eq $preamble.Length) {
$encodingobj = $encoding;
$found = $true;
}
}
If ($found) {
break;
}
}
}
}
# Main dispatch - based on the value of 'state', perform argument validation and
# call the appropriate handler function.
If ($state -eq "present") {
If ($backrefs -and -not $regex) {
Fail-Json @{} "regexp= is required with backrefs=true";
}
If (-not $line) {
Fail-Json @{} "line= is required with state=present";
}
If ($insertbefore -and $insertafter) {
Add-Warning $result "Both insertbefore and insertafter parameters found, ignoring `"insertafter=$insertafter`""
}
If (-not $insertbefore -and -not $insertafter) {
$insertafter = "EOF";
}
$present_params = @{
path = $path
regex = $regex
line = $line
insertafter = $insertafter
insertbefore = $insertbefore
create = $create
backup = $backup
backrefs = $backrefs
validate = $validate
encodingobj = $encodingobj
linesep = $linesep
check_mode = $check_mode
diff_support = $diff_support
}
Present @present_params;
}
ElseIf ($state -eq "absent") {
If (-not $regex -and -not $line) {
Fail-Json @{} "one of line= or regexp= is required with state=absent";
}
$absent_params = @{
path = $path
regex = $regex
line = $line
backup = $backup
validate = $validate
encodingobj = $encodingobj
linesep = $linesep
check_mode = $check_mode
diff_support = $diff_support
}
Absent @absent_params;
}