API

api/common/Service/Decrypt.php

@@ -0,0 +1,91 @@
+<?php
+namespace ProVM\Common\Service;
+
+use Psr\Log\LoggerInterface;
+use function Safe\exec;
+
+class Decrypt
+{
+    public function __construct(LoggerInterface $logger, string $base_command, array $passwords)
+    {
+        $this->setLogger($logger);
+        $this->setBaseCommand($base_command);
+        $this->setPasswords($passwords);
+    }
+
+    protected array $passwords;
+    protected string $base_command;
+    protected LoggerInterface $logger;
+
+    public function getPasswords(): array
+    {
+        return $this->passwords;
+    }
+    public function getBaseCommand(): string
+    {
+        return $this->base_command;
+    }
+    public function getLogger(): LoggerInterface
+    {
+        return $this->logger;
+    }
+
+    public function addPassword(string $password): Decrypt
+    {
+        $this->passwords []= $password;
+        return $this;
+    }
+    public function setPasswords(array $passwords): Decrypt
+    {
+        foreach ($passwords as $password) {
+            $this->addPassword($password);
+        }
+        return $this;
+    }
+    public function setBaseCommand(string $command): Decrypt
+    {
+        $this->base_command = $command;
+        return $this;
+    }
+    public function setLogger(LoggerInterface $logger): Decrypt
+    {
+        $this->logger = $logger;
+        return $this;
+    }
+
+    public function isEncrypted(string $filename): bool
+    {
+        if (!file_exists($filename)) {
+            throw new \InvalidArgumentException("File not found {$filename}");
+        }
+        $escaped_filename = escapeshellarg($filename);
+        $cmd = "{$this->getBaseCommand()} --is-encrypted {$escaped_filename}";
+        exec($cmd, $output, $retcode);
+        return $retcode == 0;
+    }
+
+    public function buildCommand(string $in_file, string $out_file, string $password): string
+    {
+        return $this->getBaseCommand() . ' -password=' . escapeshellarg($password) . ' -decrypt ' . escapeshellarg($in_file) . ' ' . escapeshellarg($out_file);
+    }
+    public function runCommand(string $in_file, string $out_file): bool
+    {
+        if (file_exists($out_file)) {
+            return true;
+        }
+
+        foreach ($this->getPasswords() as $password) {
+            $cmd = $this->buildCommand($in_file, $out_file, $password);
+            exec($cmd, $output, $retcode);
+            $success = $retcode == 0;
+            if ($success) {
+                return true;
+            }
+            if (file_exists($out_file)) {
+                unlink($out_file);
+            }
+            unset($output);
+        }
+        return false;
+    }
+}