no message

app/Helpers/Pdfhelper.php

+<?php
+
+use Illuminate\Support\Facades\Log;
+
+
+if (!function_exists('convertPdfVersion')) {
+    /**
+     * Identifies the correct Ghostscript binary based on OS.
+     */
+    function getGsPath()
+    {
+        $path = (PHP_OS_FAMILY === 'Windows') ? 'gswin64c' : 'gs';
+        
+        // Check if the binary is actually executable/accessible
+        $checkCmd = (PHP_OS_FAMILY === 'Windows') ? "where $path" : "which $path";
+        $exists = shell_exec($checkCmd);
+        
+        if (!$exists) {
+            throw new \Exception("Ghostscript binary ($path) not found. Please install it on this " . PHP_OS_FAMILY . " environment.");
+        }
+        
+        return $path;
+    }
+}
+
+if (!function_exists('convertPdfVersion')) {
+    /**
+     * Converts a PDF to version 1.4 using Ghostscript to ensure compatibility with FPDI.
+     *
+     * @param string $path Full path to the source PDF file.
+     * @return string Full path to the converted PDF file.
+     */
+    function convertPdfVersion($inputPath,$outputPath)
+    {
+        // Basic check to ensure the file exists before processing
+        if (!file_exists($inputPath)) {
+            Log::error("Source PDF for conversion not found at: {$path}");
+            return $inputPath;
+        }
+
+        // 2. Prepare the Ghostscript command
+        // escapeshellarg() is used for security and to handle spaces in file paths
+        //$gsPath = "gs";
+
+        // On Windows/Laragon, use gswin64c instead of gs
+        // $gsPath = 'gswin64c';
+        $gsPath = getGsPath();
+
+        $command = "gswin64c -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dNOPAUSE -dQUIET -dBATCH -sOutputFile=" . escapeshellarg($outputPath) . " " . escapeshellarg($inputPath);
+
+        
+
+        // 3. Execute the command via the system shell
+        $output = shell_exec($command);
+
+        // 4. Verify if the conversion was successful
+        if (!file_exists($outputPath)) {
+            Log::error("Ghostscript failed to convert PDF. Output: {$output}");
+            // Return original path as a fallback so the app doesn't crash,
+            // though FPDI might still throw the compression error later.
+            return $outputPath;
+        }
+
+        return $outputPath;
+    }
+}

composer.json

@@ -12,7 +12,10 @@
   "autoload": {
     "psr-4": {
       "LaravelHsm\\HsmCrypto\\": "src/"
-    }
+    },
+    "files": [
+        "app/Helpers/PdfHelper.php"
+    ]
   },
   "require": {
     "php": "^8.1",

src/Pkcs11Command.php

@@ -383,16 +383,44 @@ class Pkcs11Command
                 throw new \Exception('Failed to decrypt PDF content.');
             }
 
-            $fpdi = new MyPdf();
+            $tempDir = storage_path('app/temp_pdf');
+            if (!file_exists($tempDir)) mkdir($tempDir, 0777, true);
 
-            // Write decrypted bytes to a memory stream
-            // $pdfStream = fopen('php://memory', 'r+');
-            // fwrite($pdfStream, $decryptedPdf);
-            // rewind($pdfStream);
+            $uniqueId = uniqid();
+            $inputPath = $tempDir . "/in_{$uniqueId}.pdf";
+            $outputPath = $tempDir . "/out_{$uniqueId}.pdf";
 
-            // Count pages
-            $pdfStream = StreamReader::createByString($decryptedPdf);
-            $pageCount = $fpdi->setSourceFile($pdfStream);
+            try {
+                file_put_contents($inputPath, $decryptedPdf);
+
+                $decryptedPdf = convertPdfVersion($inputPath,$outputPath);
+
+                $cleanPdfContent = file_get_contents($outputPath);
+
+                $fpdi = new MyPdf();
+                $pdfStream = StreamReader::createByString($cleanPdfContent);
+                $pageCount = $fpdi->setSourceFile($pdfStream);
+
+            } catch (\Exception $e) {
+                Log::error('PDF Processing Error: ' . $e->getMessage());
+                throw $e;
+            } finally {
+                // 7. Cleanup - Never leave temp files on a production server
+                if (file_exists($inputPath)) @unlink($inputPath);
+                if (file_exists($outputPath)) @unlink($outputPath);
+            }
+
+
+            // $fpdi = new MyPdf();
+
+            // // Write decrypted bytes to a memory stream
+            // // $pdfStream = fopen('php://memory', 'r+');
+            // // fwrite($pdfStream, $decryptedPdf);
+            // // rewind($pdfStream);
+
+            // // Count pages
+            // $pdfStream = StreamReader::createByString($decryptedPdf);
+            // $pageCount = $fpdi->setSourceFile($pdfStream);
 
             // 3️⃣ Add watermark & rebuild PDF in memory
             for ($i = 1; $i <= $pageCount; $i++) {