Multiple fixes - REQUIRES PHP 7.1+.

.github/workflows/tests.yml

@@ -25,17 +25,14 @@ jobs:
                 php-version: ["7.1", "7.2", "7.3", "7.4", "8.0", "8.1", "8.2"]
                 os: [ubuntu-latest]
                 experimental: [false]
-                php-extensions: ["bcmath, imagick, gd"]
+                php-extensions: ["bcmath, curl, imagick, gd"]
                 coverage-extension: ["none"]
                 # Add more specific tests
                 include:
-                  - { php-version: '5.5', experimental: false, os: ubuntu-latest, php-extensions: 'bcmath, imagick, gd', coverage-extension: 'xdebug' }
-                  - { php-version: '5.6', experimental: false, os: ubuntu-latest, php-extensions: 'bcmath, imagick, gd', coverage-extension: 'xdebug' }
-                  - { php-version: '7.0', experimental: false, os: ubuntu-latest, php-extensions: 'bcmath, imagick, gd', coverage-extension: 'xdebug' }
-                  #- { php-version: '8.2', experimental: false, os: macos-latest, php-extensions: 'bcmath, imagick, gd', coverage-extension: 'none' }
-                  - { php-version: '8.2', experimental: false, os: windows-latest, php-extensions: 'bcmath, imagick, gd', coverage-extension: 'none' }
-                  - { php-version: '8.3', experimental: true, os: ubuntu-latest, php-extensions: 'bcmath, imagick, gd', coverage-extension: 'pcov' }
-                  - { php-version: 'nightly', experimental: true, os: ubuntu-latest, php-extensions: 'bcmath, imagick, gd', coverage-extension: 'pcov' }
+                  #- { php-version: '8.2', experimental: false, os: macos-latest, php-extensions: 'bcmath, curl, imagick, gd', coverage-extension: 'none' }
+                  - { php-version: '8.2', experimental: false, os: windows-latest, php-extensions: 'bcmath, curl, imagick, gd', coverage-extension: 'none' }
+                  - { php-version: '8.3', experimental: true, os: ubuntu-latest, php-extensions: 'bcmath, curl, imagick, gd', coverage-extension: 'pcov' }
+                  - { php-version: 'nightly', experimental: true, os: ubuntu-latest, php-extensions: 'bcmath, curl, imagick, gd', coverage-extension: 'pcov' }
         env:
             PDFINFO_BINARY: ${{ (matrix.os == 'ubuntu-latest') && '/usr/bin/pdfinfo' || ((matrix.os == 'macos-latest') && '/usr/local/bin/pdfinfo' || 'C:\ProgramData\Chocolatey\bin\pdfinfo.exe') }}
         steps:

CHANGELOG.TXT

@@ -1,3 +1,10 @@
+6.8.0 (2024-12-23)
+	- Requires PHP 7.1+ and curl extension.
+	- Escape error message.
+	- Use strict time-constant function to compare TCPDF-tag hashes.
+	- Add K_CURLOPTS config array to set custom cURL options (NOTE: some defaults have changed).
+	- Add some addTTFfont fixes from tc-lib-pdf-font.
+
 6.7.8 (2024-12-13)
 	- Improve SVG detection by checking for (mandatory) namespace.
 	- Use late state binding now that minimum PHP version is 5.5.

VERSION

@@ -1 +1 @@
-6.7.8
+6.8.0

composer.json

@@ -12,7 +12,7 @@
         "barcodes"
     ],
     "homepage": "http://www.tcpdf.org/",
-    "version": "6.7.8",
+    "version": "6.8.0",
     "license": "LGPL-3.0-or-later",
     "authors": [
         {
@@ -22,7 +22,8 @@
         }
     ],
     "require": {
-        "php": ">=5.5.0"
+        "php": ">=7.1.0",
+        "ext-curl": "*"
     },
     "autoload": {
         "classmap": [

include/tcpdf_fonts.php

@@ -1,13 +1,13 @@
 <?php
 //============================================================+
 // File name   : tcpdf_fonts.php
-// Version     : 1.1.0
+// Version     : 1.1.1
 // Begin       : 2008-01-01
-// Last Update : 2014-12-10
+// Last Update : 2024-12-23
 // Author      : Nicola Asuni - Tecnick.com LTD - www.tecnick.com - info@tecnick.com
 // License     : GNU-LGPL v3 (http://www.gnu.org/copyleft/lesser.html)
 // -------------------------------------------------------------------
-// Copyright (C) 2008-2014 Nicola Asuni - Tecnick.com LTD
+// Copyright (C) 2008-2024 Nicola Asuni - Tecnick.com LTD
 //
 // This file is part of TCPDF software library.
 //
@@ -42,7 +42,7 @@
  * @class TCPDF_FONTS
  * Font methods for TCPDF library.
  * @package com.tecnick.tcpdf
- * @version 1.1.0
+ * @version 1.1.1
  * @author Nicola Asuni - info@tecnick.com
  */
 class TCPDF_FONTS {
@@ -191,29 +191,30 @@ public static function addTTFfont($fontfile, $fonttype='', $enc='', $flags=32, $
 			fclose($fp);
 			// get font info
 			$fmetric['Flags'] = $flags;
-			preg_match ('#/FullName[\s]*\(([^\)]*)#', $font, $matches);
+			preg_match ('#/FullName[\s]*+\(([^\)]*+)#', $font, $matches);
 			$fmetric['name'] = preg_replace('/[^a-zA-Z0-9_\-]/', '', $matches[1]);
-			preg_match('#/FontBBox[\s]*{([^}]*)#', $font, $matches);
-			$fmetric['bbox'] = trim($matches[1]);
-			$bv = explode(' ', $fmetric['bbox']);
-			$fmetric['Ascent'] = intval($bv[3]);
-			$fmetric['Descent'] = intval($bv[1]);
-			preg_match('#/ItalicAngle[\s]*([0-9\+\-]*)#', $font, $matches);
+			preg_match('#/FontBBox[\s]*+{([^}]*+)#', $font, $matches);
+			$rawbvl = explode(' ', trim($matches[1]));
+			$bvl = [(int) $rawbvl[0], (int) $rawbvl[1], (int) $rawbvl[2], (int) $rawbvl[3]];
+			$fmetric['bbox'] = implode(' ', $bvl);
+			$fmetric['Ascent'] = $bvl[3];
+			$fmetric['Descent'] = $bvl[1];
+			preg_match('#/ItalicAngle[\s]*+([0-9\+\-]*+)#', $font, $matches);
 			$fmetric['italicAngle'] = intval($matches[1]);
 			if ($fmetric['italicAngle'] != 0) {
 				$fmetric['Flags'] |= 64;
 			}
-			preg_match('#/UnderlinePosition[\s]*([0-9\+\-]*)#', $font, $matches);
+			preg_match('#/UnderlinePosition[\s]*+([0-9\+\-]*+)#', $font, $matches);
 			$fmetric['underlinePosition'] = intval($matches[1]);
-			preg_match('#/UnderlineThickness[\s]*([0-9\+\-]*)#', $font, $matches);
+			preg_match('#/UnderlineThickness[\s]*+([0-9\+\-]*+)#', $font, $matches);
 			$fmetric['underlineThickness'] = intval($matches[1]);
-			preg_match('#/isFixedPitch[\s]*([^\s]*)#', $font, $matches);
+			preg_match('#/isFixedPitch[\s]*+([^\s]*+)#', $font, $matches);
 			if ($matches[1] == 'true') {
 				$fmetric['Flags'] |= 1;
 			}
 			// get internal map
 			$imap = array();
-			if (preg_match_all('#dup[\s]([0-9]+)[\s]*/([^\s]*)[\s]put#sU', $font, $fmap, PREG_SET_ORDER) > 0) {
+			if (preg_match_all('#dup[\s]([0-9]+)[\s]*+/([^\s]*+)[\s]put#sU', $font, $fmap, PREG_SET_ORDER) > 0) {
 				foreach ($fmap as $v) {
 					$imap[$v[2]] = $v[1];
 				}
@@ -229,22 +230,22 @@ public static function addTTFfont($fontfile, $fonttype='', $enc='', $flags=32, $
 				$eplain .= chr($chr ^ ($r >> 8));
 				$r = ((($chr + $r) * $c1 + $c2) % 65536);
 			}
-			if (preg_match('#/ForceBold[\s]*([^\s]*)#', $eplain, $matches) > 0) {
+			if (preg_match('#/ForceBold[\s]*+([^\s]*+)#', $eplain, $matches) > 0) {
 				if ($matches[1] == 'true') {
 					$fmetric['Flags'] |= 0x40000;
 				}
 			}
-			if (preg_match('#/StdVW[\s]*\[([^\]]*)#', $eplain, $matches) > 0) {
+			if (preg_match('#/StdVW[\s]*+\[([^\]]*+)#', $eplain, $matches) > 0) {
 				$fmetric['StemV'] = intval($matches[1]);
 			} else {
 				$fmetric['StemV'] = 70;
 			}
-			if (preg_match('#/StdHW[\s]*\[([^\]]*)#', $eplain, $matches) > 0) {
+			if (preg_match('#/StdHW[\s]*+\[([^\]]*+)#', $eplain, $matches) > 0) {
 				$fmetric['StemH'] = intval($matches[1]);
 			} else {
 				$fmetric['StemH'] = 30;
 			}
-			if (preg_match('#/BlueValues[\s]*\[([^\]]*)#', $eplain, $matches) > 0) {
+			if (preg_match('#/BlueValues[\s]*+\[([^\]]*+)#', $eplain, $matches) > 0) {
 				$bv = explode(' ', $matches[1]);
 				if (count($bv) >= 6) {
 					$v1 = intval($bv[2]);
@@ -265,15 +266,15 @@ public static function addTTFfont($fontfile, $fonttype='', $enc='', $flags=32, $
 				$fmetric['CapHeight'] = 700;
 			}
 			// get the number of random bytes at the beginning of charstrings
-			if (preg_match('#/lenIV[\s]*([0-9]*)#', $eplain, $matches) > 0) {
+			if (preg_match('#/lenIV[\s]*+([\d]*+)#', $eplain, $matches) > 0) {
 				$lenIV = intval($matches[1]);
 			} else {
 				$lenIV = 4;
 			}
 			$fmetric['Leading'] = 0;
 			// get charstring data
 			$eplain = substr($eplain, (strpos($eplain, '/CharStrings') + 1));
-			preg_match_all('#/([A-Za-z0-9\.]*)[\s][0-9]+[\s]RD[\s](.*)[\s]ND#sU', $eplain, $matches, PREG_SET_ORDER);
+			preg_match_all('#/([A-Za-z0-9\.]*+)[\s][0-9]+[\s]RD[\s](.*)[\s]ND#sU', $eplain, $matches, PREG_SET_ORDER);
 			if (!empty($enc) AND isset(TCPDF_FONT_DATA::$encmap[$enc])) {
 				$enc_map = TCPDF_FONT_DATA::$encmap[$enc];
 			} else {

include/tcpdf_static.php

@@ -1,13 +1,13 @@
 <?php
 //============================================================+
 // File name   : tcpdf_static.php
-// Version     : 1.1.4
+// Version     : 1.1.5
 // Begin       : 2002-08-03
-// Last Update : 2023-09-06
+// Last Update : 2024-12-23
 // Author      : Nicola Asuni - Tecnick.com LTD - www.tecnick.com - info@tecnick.com
 // License     : GNU-LGPL v3 (http://www.gnu.org/copyleft/lesser.html)
 // -------------------------------------------------------------------
-// Copyright (C) 2002-2023 Nicola Asuni - Tecnick.com LTD
+// Copyright (C) 2002-2024 Nicola Asuni - Tecnick.com LTD
 //
 // This file is part of TCPDF software library.
 //
@@ -38,15 +38,15 @@
  * This is a PHP class that contains static methods for the TCPDF class.<br>
  * @package com.tecnick.tcpdf
  * @author Nicola Asuni
- * @version 1.1.2
+ * @version 1.1.5
  */
 
 /**
  * @class TCPDF_STATIC
  * Static methods used by the TCPDF class.
  * @package com.tecnick.tcpdf
  * @brief PHP class for generating PDF documents without requiring external extensions.
- * @version 1.1.1
+ * @version 1.1.5
  * @author Nicola Asuni - info@tecnick.com
  */
 class TCPDF_STATIC {
@@ -55,7 +55,7 @@ class TCPDF_STATIC {
 	 * Current TCPDF version.
 	 * @private static
 	 */
-	private static $tcpdf_version = '6.7.8';
+	private static $tcpdf_version = '6.8.0';
 
 	/**
 	 * String alias for total number of pages.
@@ -106,6 +106,31 @@ class TCPDF_STATIC {
 	 */
 	public static $pageboxes = array('MediaBox', 'CropBox', 'BleedBox', 'TrimBox', 'ArtBox');
 
+	/**
+     * Array of default cURL options for curl_setopt_array.
+     *
+     * @var array<int, bool|int|string> cURL options.
+     */
+    protected const CURLOPT_DEFAULT = [
+        CURLOPT_CONNECTTIMEOUT => 5,
+        CURLOPT_MAXREDIRS => 5,
+        CURLOPT_PROTOCOLS => CURLPROTO_HTTPS | CURLPROTO_HTTP | CURLPROTO_FTP | CURLPROTO_FTPS,
+        CURLOPT_SSL_VERIFYHOST => 2,
+        CURLOPT_SSL_VERIFYPEER => true,
+        CURLOPT_TIMEOUT => 30,
+        CURLOPT_USERAGENT => 'tcpdf',
+    ];
+
+    /**
+     * Array of fixed cURL options for curl_setopt_array.
+     *
+     * @var array<int, bool|int|string> cURL options.
+     */
+    protected const CURLOPT_FIXED = [
+        CURLOPT_FAILONERROR => true,
+        CURLOPT_RETURNTRANSFER => true,
+    ];
+
 	// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 
 	/**
@@ -1823,23 +1848,19 @@ public static function fopenLocal($filename, $mode) {
 	 */
 	public static function url_exists($url) {
 		$crs = curl_init();
-		// encode query params in URL to get right response form the server
-		$url = self::encodeUrlQuery($url);
-		curl_setopt($crs, CURLOPT_URL, $url);
-		curl_setopt($crs, CURLOPT_NOBODY, true);
-		curl_setopt($crs, CURLOPT_FAILONERROR, true);
-		if ((ini_get('open_basedir') == '') && (!ini_get('safe_mode'))) {
-			curl_setopt($crs, CURLOPT_FOLLOWLOCATION, true);
-		}
-		curl_setopt($crs, CURLOPT_CONNECTTIMEOUT, 5);
-		curl_setopt($crs, CURLOPT_TIMEOUT, 30);
-		curl_setopt($crs, CURLOPT_SSL_VERIFYPEER, false);
-		curl_setopt($crs, CURLOPT_SSL_VERIFYHOST, false);
-		curl_setopt($crs, CURLOPT_USERAGENT, 'tc-lib-file');
-		curl_setopt($crs, CURLOPT_MAXREDIRS, 5);
-		if (defined('CURLOPT_PROTOCOLS')) {
-		    curl_setopt($crs, CURLOPT_PROTOCOLS, CURLPROTO_HTTPS | CURLPROTO_HTTP |  CURLPROTO_FTP | CURLPROTO_FTPS);
-		}
+        $curlopts = [];
+        if (
+            (ini_get('open_basedir') == '')
+            && (ini_get('safe_mode') === ''
+            || ini_get('safe_mode') === false)
+        ) {
+            $curlopts[CURLOPT_FOLLOWLOCATION] = true;
+        }
+        $curlopts = array_replace($curlopts, self::CURLOPT_DEFAULT);
+        $curlopts = array_replace($curlopts, K_CURLOPTS);
+        $curlopts = array_replace($curlopts, self::CURLOPT_FIXED);
+        $curlopts[CURLOPT_URL] = $url;
+        curl_setopt_array($crs, $curlopts);
 		curl_exec($crs);
 		$code = curl_getinfo($crs, CURLINFO_HTTP_CODE);
 		curl_close($crs);
@@ -1960,21 +1981,19 @@ public static function fileGetContents($file) {
 			) {
 				// try to get remote file data using cURL
 				$crs = curl_init();
-				curl_setopt($crs, CURLOPT_URL, $path);
-				curl_setopt($crs, CURLOPT_FAILONERROR, true);
-				curl_setopt($crs, CURLOPT_RETURNTRANSFER, true);
-				if ((ini_get('open_basedir') == '') && (!ini_get('safe_mode'))) {
-				    curl_setopt($crs, CURLOPT_FOLLOWLOCATION, true);
-				}
-				curl_setopt($crs, CURLOPT_CONNECTTIMEOUT, 5);
-				curl_setopt($crs, CURLOPT_TIMEOUT, 30);
-				curl_setopt($crs, CURLOPT_SSL_VERIFYPEER, false);
-				curl_setopt($crs, CURLOPT_SSL_VERIFYHOST, false);
-				curl_setopt($crs, CURLOPT_USERAGENT, 'tc-lib-file');
-				curl_setopt($crs, CURLOPT_MAXREDIRS, 5);
-				if (defined('CURLOPT_PROTOCOLS')) {
-				    curl_setopt($crs, CURLOPT_PROTOCOLS, CURLPROTO_HTTPS | CURLPROTO_HTTP |  CURLPROTO_FTP | CURLPROTO_FTPS);
+				$curlopts = [];
+				if (
+					(ini_get('open_basedir') == '')
+					&& (ini_get('safe_mode') === ''
+					|| ini_get('safe_mode') === false)
+				) {
+					$curlopts[CURLOPT_FOLLOWLOCATION] = true;
 				}
+				$curlopts = array_replace($curlopts, self::CURLOPT_DEFAULT);
+				$curlopts = array_replace($curlopts, K_CURLOPTS);
+				$curlopts = array_replace($curlopts, self::CURLOPT_FIXED);
+				$curlopts[CURLOPT_URL] = $url;
+				curl_setopt_array($crs, $curlopts);
 				$ret = curl_exec($crs);
 				curl_close($crs);
 				if ($ret !== false) {

tcpdf.php

@@ -1,9 +1,9 @@
 <?php
 //============================================================+
 // File name   : tcpdf.php
-// Version     : 6.7.8
+// Version     : 6.8.0
 // Begin       : 2002-08-03
-// Last Update : 2024-12-13
+// Last Update : 2024-12-23
 // Author      : Nicola Asuni - Tecnick.com LTD - www.tecnick.com - info@tecnick.com
 // License     : GNU-LGPL v3 (http://www.gnu.org/copyleft/lesser.html)
 // -------------------------------------------------------------------
@@ -104,7 +104,7 @@
  * Tools to encode your unicode fonts are on fonts/utils directory.</p>
  * @package com.tecnick.tcpdf
  * @author Nicola Asuni
- * @version 6.7.8
+ * @version 6.8.0
  */
 
 // TCPDF configuration
@@ -128,7 +128,7 @@
  * TCPDF project (http://www.tcpdf.org) has been originally derived in 2002 from the Public Domain FPDF class by Olivier Plathey (http://www.fpdf.org), but now is almost entirely rewritten.<br>
  * @package com.tecnick.tcpdf
  * @brief PHP class for generating PDF documents without requiring external extensions.
- * @version 6.7.8
+ * @version 6.8.0
  * @author Nicola Asuni - info@tecnick.com
  * @IgnoreAnnotation("protected")
  * @IgnoreAnnotation("public")
@@ -3007,6 +3007,7 @@ public function setAllowLocalFiles($allowLocalFiles) {
 	public function Error($msg) {
 		// unset all class variables
 		$this->_destroy(true);
+		$msg = htmlspecialchars($msg, ENT_QUOTES, 'UTF-8');
 		if (defined('K_TCPDF_THROW_EXCEPTION_ERROR') AND !K_TCPDF_THROW_EXCEPTION_ERROR) {
 			die('<strong>TCPDF ERROR: </strong>'.$msg);
 		} else {
@@ -17259,7 +17260,7 @@ protected function unserializeTCPDFtag($data) {
 		$hlen = intval(substr($data, 0, $hpos));
 		$hash = substr($data, $hpos + 1, $hlen);
 		$encoded = substr($data, $hpos + 2 + $hlen);
-		if ($hash != $this->hashTCPDFtag($encoded)) {
+		if (!hash_equals( $this->hashTCPDFtag($encoded), $hash)) {
 			$this->Error('Invalid parameters');
 		}
 		return json_decode(urldecode($encoded), true);
@@ -19124,7 +19125,7 @@ protected function openHTMLTagHandler($dom, $key, $cell) {
 				$imglink = '';
 				if (isset($this->HREF['url']) AND !TCPDF_STATIC::empty_string($this->HREF['url'])) {
 					$imglink = $this->HREF['url'];
-					if ($imglink[0] == '#') {
+					if ($imglink[0] == '#' AND is_numeric($imglink[1])) {
 						// convert url to internal link
 						$lnkdata = explode(',', $imglink);
 						if (isset($lnkdata[0])) {
@@ -23485,7 +23486,7 @@ protected function setSVGStyles($svgstyle, $prevsvgstyle, $x=0, $y=0, $w=1, $h=1
 			if (preg_match('/font-family[\s]*:[\s]*([^\;\"]*)/si', $svgstyle['font'], $regs)) {
 				$font_family = $this->getFontFamilyName($regs[1]);
 			} else {
-				$font_family = $svgstyle['font-family'];
+				$font_family = $this->getFontFamilyName($svgstyle['font-family']);
 			}
 			if (preg_match('/font-size[\s]*:[\s]*([^\s\;\"]*)/si', $svgstyle['font'], $regs)) {
 				$font_size = trim($regs[1]);

tcpdf_autoconfig.php

@@ -240,6 +240,11 @@
 	define('K_TIMEZONE', @date_default_timezone_get());
 }
 
+// Custom cURL options for curl_setopt_array.
+if (!defined('K_CURLOPTS')) {
+	define('K_CURLOPTS', array());
+}
+
 //============================================================+
 // END OF FILE
 //============================================================+