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AcmeClient/Sftp: Fix updates of readonly files when owner is numeric

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This commit is contained in:
Juergen Kellerer
2021-06-09 20:24:33 +02:00
parent 47490058c4
commit bf87cf04a0
2 changed files with 60 additions and 13 deletions
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security/acme-client/pkg-descr
+5
View File
@@ -8,6 +8,11 @@ WWW: https://github.com/acmesh-official/acme.sh
Plugin Changelog
================
2.6
Fixed:
* sftp update of write protected cert files with a numeric owner
2.5
Added:
security/acme-client/src/opnsense/mvc/app/library/OPNsense/AcmeClient/SftpUploader.php
+55 -13
View File
@@ -43,6 +43,7 @@ class SftpUploader
/* @var SftpClient */
private $sftp;
private $sftp_connection_file_owner = -2;
private $pending_files = [];
private $pending_base_path = "";
@@ -237,7 +238,7 @@ class SftpUploader
$remote_filename = basename((empty($file["target"]) ? $local_file : $file["target"]));
$remote_file = $remote_files[$remote_filename] ?: ["type" => "-", "owner" => $username];
$remote_is_file = $remote_file["type"] === "-";
$remote_is_readonly = preg_match('/^-r-.r-.+$/', $remote_file["permissions"] ?: "");
$remote_is_readonly = preg_match('/^[^wW]+$/', $remote_file["permissions"] ?: "");
// Check if a folder/socket/symlink, etc is in the way
if (!$remote_is_file) {
@@ -253,38 +254,40 @@ class SftpUploader
// Initial upload when permissions are properly set.
$retry_with_permission_change =
$should_upload_with_permission_change =
$chmod !== false
&& $remote_file["owner"] === $username
&& isset($remote_files[$remote_filename]);
if (!$remote_is_readonly) {
$preserve_times_and_mod = $chmod !== false;
if ($error = $this->sftp->put($local_file, $remote_filename, $preserve_times_and_mod)->lastError()) {
Utils::log()->error("Failed uploading file '{$local_file}' to '{$file["target"]}'", $error);
if ($error["permission_denied"] !== true) {
$retry_with_permission_change = false;
$should_upload_with_permission_change = false;
}
if ($retry_with_permission_change) {
Utils::log()->info("Retrying file '{$local_file}' to '{$file["target"]}' with adjusted permissions");
if ($should_upload_with_permission_change) {
$this->sftp->clearError();
} else {
Utils::log()->error("Failed uploading file '{$local_file}' to '{$file["target"]}'", $error);
return self::UPLOAD_ERROR_NO_PERMISSION;
}
} else {
$retry_with_permission_change = false;
$should_upload_with_permission_change = false;
}
}
// Second attempt when initial failed or was skipped due to write protection (only possible if we have chmod defined to reset permissions later)
if ($retry_with_permission_change) {
$this->sftp->chmod($remote_filename, '0600');
if ($should_upload_with_permission_change && $this->isFileOwnedByConnection($remote_file, $connection)) {
Utils::log()->info("Trying to upload file '{$local_file}' to '{$file["target"]}' with adjusted permissions");
if ($error = $this->sftp->chmod($remote_filename, '0600')->lastError()) {
Utils::log()->error("Failed changing permission to '0600' for '{$file["target"]}'. ", $error);
$this->sftp->clearError();
}
if ($error = $this->sftp->put($local_file, $remote_filename)->lastError()) {
Utils::log()->error("Failed uploading file '{$local_file}' to '{$file["target"]}'", $error);
Utils::log()->error("Failed uploading file (with adjusted permissions) '{$local_file}' to '{$file["target"]}'", $error);
return self::UPLOAD_ERROR_NO_PERMISSION;
}
} elseif ($remote_is_readonly) {
@@ -323,6 +326,45 @@ class SftpUploader
return self::UPLOAD_SUCCESS;
}
private function isFileOwnedByConnection(array $remote_file, array $connection): bool
{
if (isset($remote_file["owner"])) {
// Direct match when file owner was returned as username
if ($remote_file["owner"] === $connection["user"]) {
return true;
}
// Detect file owner when it was returned as numeric value.
if (preg_match('/^[0-9]+$/', $remote_file["owner"])) {
// Uploading a temp file to see what owner this connection creates
if ($this->sftp_connection_file_owner === -2) {
$local_test_file = $this->temporaryFile();
$remote_test_file = basename($local_test_file);
$this->sftp->clearError();
if ($error = $this->sftp->put($local_test_file, $remote_test_file)->lastError()) {
Utils::log()->error("Failed uploading test file to detect ownership. Next uploads may fail as well.", $error);
} else {
// Get owner of the test file
$file_info = $this->sftp->ls()[$remote_test_file] ?: ["owner" => -1];
// Cleanup
$this->sftp->rm($remote_test_file);
$this->sftp->clearError();
// Cache the result
$this->sftp_connection_file_owner = $file_info["owner"];
}
}
if ($remote_file["owner"] == $this->sftp_connection_file_owner) {
return true;
}
}
}
return false;
}
private function deleteSourceIfRequested($file)
{
if (