update ip-lib library from 1.20.0 to 1.21.0

CHANGELOG.md

@@ -5,7 +5,7 @@
 * ADDED: Added `shortenviashlink` endpoint with an `shlink` configuration section
 * ADDED: Password peek (#1254)
 * CHANGED: CSP recommendation around bootstrap5 template resolved in Firefox 131 (#1613)
-* CHANGED: Upgrading libraries to: bootstrap 5.3.8 & DOMpurify 3.2.7
+* CHANGED: Upgrading libraries to: bootstrap 5.3.8, DOMpurify 3.2.7 & ip-lib 1.21.0
 * FIXED: Allow pasting a password for decrypting a paste (#1620)
 * FIXED: Allow copying the shortened link after using a URL shortener (#1624)
 * FIXED: URL extraction fails when frame-ancestors is set in CSP (#1644)

composer.json

@@ -26,7 +26,7 @@
 	"require" : {
 		"php": "^7.4 || ^8.0",
 		"jdenticon/jdenticon": "2.0.0",
-		"mlocati/ip-lib": "1.20.0",
+		"mlocati/ip-lib": "1.21.0",
 		"symfony/polyfill-php80": "1.31.0",
 		"yzalis/identicon": "2.0.0"
 	},

composer.lock

@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "cc778a671eac2ba1ec70bf9398b2e1bf",
+    "content-hash": "f008f704483472b237031d4fa389cb70",
     "packages": [
         {
             "name": "jdenticon/jdenticon",
@@ -57,16 +57,16 @@
         },
         {
             "name": "mlocati/ip-lib",
-            "version": "1.20.0",
+            "version": "1.21.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/mlocati/ip-lib.git",
-                "reference": "fd45fc3bf08ed6c7e665e2e70562082ac954afd4"
+                "reference": "b5d38cdcbfc1516604d821a1f3f4a1638f327267"
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-                "url": "https://api.github.com/repos/mlocati/ip-lib/zipball/fd45fc3bf08ed6c7e665e2e70562082ac954afd4",
+                "url": "https://api.github.com/repos/mlocati/ip-lib/zipball/b5d38cdcbfc1516604d821a1f3f4a1638f327267",
-                "reference": "fd45fc3bf08ed6c7e665e2e70562082ac954afd4",
+                "reference": "b5d38cdcbfc1516604d821a1f3f4a1638f327267",
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             "require": {
@@ -112,7 +112,7 @@
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             "support": {
                 "issues": "https://github.com/mlocati/ip-lib/issues",
-                "source": "https://github.com/mlocati/ip-lib/tree/1.20.0"
+                "source": "https://github.com/mlocati/ip-lib/tree/1.21.0"
             },
             "funding": [
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@@ -124,7 +124,7 @@
                     "type": "other"
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-            "time": "2025-02-04T17:30:58+00:00"
+            "time": "2025-09-24T13:58:50+00:00"
         },
         {
             "name": "symfony/polyfill-php80",
@@ -337,16 +337,16 @@
         },
         {
             "name": "myclabs/deep-copy",
-            "version": "1.13.3",
+            "version": "1.13.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/myclabs/DeepCopy.git",
-                "reference": "faed855a7b5f4d4637717c2b3863e277116beb36"
+                "reference": "07d290f0c47959fd5eed98c95ee5602db07e0b6a"
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-                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/faed855a7b5f4d4637717c2b3863e277116beb36",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/07d290f0c47959fd5eed98c95ee5602db07e0b6a",
-                "reference": "faed855a7b5f4d4637717c2b3863e277116beb36",
+                "reference": "07d290f0c47959fd5eed98c95ee5602db07e0b6a",
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             "require": {
@@ -385,7 +385,7 @@
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             "support": {
                 "issues": "https://github.com/myclabs/DeepCopy/issues",
-                "source": "https://github.com/myclabs/DeepCopy/tree/1.13.3"
+                "source": "https://github.com/myclabs/DeepCopy/tree/1.13.4"
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             "funding": [
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@@ -393,20 +393,20 @@
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-            "time": "2025-07-05T12:25:42+00:00"
+            "time": "2025-08-01T08:46:24+00:00"
         },
         {
             "name": "nikic/php-parser",
-            "version": "v5.5.0",
+            "version": "v5.6.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/nikic/PHP-Parser.git",
-                "reference": "ae59794362fe85e051a58ad36b289443f57be7a9"
+                "reference": "f103601b29efebd7ff4a1ca7b3eeea9e3336a2a2"
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-                "url": "https://api.github.com/repos/nikic/PHP-Parser/zipball/ae59794362fe85e051a58ad36b289443f57be7a9",
+                "url": "https://api.github.com/repos/nikic/PHP-Parser/zipball/f103601b29efebd7ff4a1ca7b3eeea9e3336a2a2",
-                "reference": "ae59794362fe85e051a58ad36b289443f57be7a9",
+                "reference": "f103601b29efebd7ff4a1ca7b3eeea9e3336a2a2",
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             "require": {
@@ -425,7 +425,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "5.0-dev"
+                    "dev-master": "5.x-dev"
                 }
             },
             "autoload": {
@@ -449,9 +449,9 @@
             ],
             "support": {
                 "issues": "https://github.com/nikic/PHP-Parser/issues",
-                "source": "https://github.com/nikic/PHP-Parser/tree/v5.5.0"
+                "source": "https://github.com/nikic/PHP-Parser/tree/v5.6.1"
             },
-            "time": "2025-05-31T08:24:38+00:00"
+            "time": "2025-08-13T20:13:15+00:00"
         },
         {
             "name": "phar-io/manifest",
@@ -892,16 +892,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "9.6.23",
+            "version": "9.6.29",
             "source": {
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                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "43d2cb18d0675c38bd44982a5d1d88f6d53d8d95"
+                "reference": "9ecfec57835a5581bc888ea7e13b51eb55ab9dd3"
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-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/43d2cb18d0675c38bd44982a5d1d88f6d53d8d95",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/9ecfec57835a5581bc888ea7e13b51eb55ab9dd3",
-                "reference": "43d2cb18d0675c38bd44982a5d1d88f6d53d8d95",
+                "reference": "9ecfec57835a5581bc888ea7e13b51eb55ab9dd3",
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@@ -912,7 +912,7 @@
                 "ext-mbstring": "*",
                 "ext-xml": "*",
                 "ext-xmlwriter": "*",
-                "myclabs/deep-copy": "^1.13.1",
+                "myclabs/deep-copy": "^1.13.4",
                 "phar-io/manifest": "^2.0.4",
                 "phar-io/version": "^3.2.1",
                 "php": ">=7.3",
@@ -923,11 +923,11 @@
                 "phpunit/php-timer": "^5.0.3",
                 "sebastian/cli-parser": "^1.0.2",
                 "sebastian/code-unit": "^1.0.8",
-                "sebastian/comparator": "^4.0.8",
+                "sebastian/comparator": "^4.0.9",
                 "sebastian/diff": "^4.0.6",
                 "sebastian/environment": "^5.1.5",
-                "sebastian/exporter": "^4.0.6",
+                "sebastian/exporter": "^4.0.8",
-                "sebastian/global-state": "^5.0.7",
+                "sebastian/global-state": "^5.0.8",
                 "sebastian/object-enumerator": "^4.0.4",
                 "sebastian/resource-operations": "^3.0.4",
                 "sebastian/type": "^3.2.1",
@@ -975,7 +975,7 @@
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                 "security": "https://github.com/sebastianbergmann/phpunit/security/policy",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.23"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.29"
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@@ -999,7 +999,7 @@
                     "type": "tidelift"
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-            "time": "2025-05-02T06:40:34+00:00"
+            "time": "2025-09-24T06:29:11+00:00"
         },
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             "name": "sebastian/cli-parser",
@@ -1170,16 +1170,16 @@
         },
         {
             "name": "sebastian/comparator",
-            "version": "4.0.8",
+            "version": "4.0.9",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/comparator.git",
-                "reference": "fa0f136dd2334583309d32b62544682ee972b51a"
+                "reference": "67a2df3a62639eab2cc5906065e9805d4fd5dfc5"
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-                "url": "https://api.github.com/repos/sebastianbergmann/comparator/zipball/fa0f136dd2334583309d32b62544682ee972b51a",
+                "url": "https://api.github.com/repos/sebastianbergmann/comparator/zipball/67a2df3a62639eab2cc5906065e9805d4fd5dfc5",
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@@ -1232,15 +1232,27 @@
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                 "issues": "https://github.com/sebastianbergmann/comparator/issues",
-                "source": "https://github.com/sebastianbergmann/comparator/tree/4.0.8"
+                "source": "https://github.com/sebastianbergmann/comparator/tree/4.0.9"
             },
             "funding": [
                 {
                     "url": "https://github.com/sebastianbergmann",
                     "type": "github"
+                },
+                {
+                    "url": "https://liberapay.com/sebastianbergmann",
+                    "type": "liberapay"
+                },
+                {
+                    "url": "https://thanks.dev/u/gh/sebastianbergmann",
+                    "type": "thanks_dev"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/sebastian/comparator",
+                    "type": "tidelift"
                 }
             ],
-            "time": "2022-09-14T12:41:17+00:00"
+            "time": "2025-08-10T06:51:50+00:00"
         },
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@@ -1430,16 +1442,16 @@
         },
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-            "version": "4.0.6",
+            "version": "4.0.8",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/exporter.git",
-                "reference": "78c00df8f170e02473b682df15bfcdacc3d32d72"
+                "reference": "14c6ba52f95a36c3d27c835d65efc7123c446e8c"
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-                "url": "https://api.github.com/repos/sebastianbergmann/exporter/zipball/78c00df8f170e02473b682df15bfcdacc3d32d72",
+                "url": "https://api.github.com/repos/sebastianbergmann/exporter/zipball/14c6ba52f95a36c3d27c835d65efc7123c446e8c",
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@@ -1495,28 +1507,40 @@
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-                "source": "https://github.com/sebastianbergmann/exporter/tree/4.0.6"
+                "source": "https://github.com/sebastianbergmann/exporter/tree/4.0.8"
             },
             "funding": [
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                     "url": "https://github.com/sebastianbergmann",
                     "type": "github"
+                },
+                {
+                    "url": "https://liberapay.com/sebastianbergmann",
+                    "type": "liberapay"
+                },
+                {
+                    "url": "https://thanks.dev/u/gh/sebastianbergmann",
+                    "type": "thanks_dev"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/sebastian/exporter",
+                    "type": "tidelift"
                 }
             ],
-            "time": "2024-03-02T06:33:00+00:00"
+            "time": "2025-09-24T06:03:27+00:00"
         },
         {
             "name": "sebastian/global-state",
-            "version": "5.0.7",
+            "version": "5.0.8",
             "source": {
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                 "url": "https://github.com/sebastianbergmann/global-state.git",
-                "reference": "bca7df1f32ee6fe93b4d4a9abbf69e13a4ada2c9"
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-                "url": "https://api.github.com/repos/sebastianbergmann/global-state/zipball/bca7df1f32ee6fe93b4d4a9abbf69e13a4ada2c9",
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@@ -1559,15 +1583,27 @@
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-                "source": "https://github.com/sebastianbergmann/global-state/tree/5.0.7"
+                "source": "https://github.com/sebastianbergmann/global-state/tree/5.0.8"
             },
             "funding": [
                 {
                     "url": "https://github.com/sebastianbergmann",
                     "type": "github"
+                },
+                {
+                    "url": "https://liberapay.com/sebastianbergmann",
+                    "type": "liberapay"
+                },
+                {
+                    "url": "https://thanks.dev/u/gh/sebastianbergmann",
+                    "type": "thanks_dev"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/sebastian/global-state",
+                    "type": "tidelift"
                 }
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-            "time": "2024-03-02T06:35:11+00:00"
+            "time": "2025-08-10T07:10:35+00:00"
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@@ -1740,16 +1776,16 @@
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             "name": "sebastian/recursion-context",
-            "version": "4.0.5",
+            "version": "4.0.6",
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                 "url": "https://github.com/sebastianbergmann/recursion-context.git",
-                "reference": "e75bd0f07204fec2a0af9b0f3cfe97d05f92efc1"
+                "reference": "539c6691e0623af6dc6f9c20384c120f963465a0"
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-                "url": "https://api.github.com/repos/sebastianbergmann/recursion-context/zipball/e75bd0f07204fec2a0af9b0f3cfe97d05f92efc1",
+                "url": "https://api.github.com/repos/sebastianbergmann/recursion-context/zipball/539c6691e0623af6dc6f9c20384c120f963465a0",
-                "reference": "e75bd0f07204fec2a0af9b0f3cfe97d05f92efc1",
+                "reference": "539c6691e0623af6dc6f9c20384c120f963465a0",
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@@ -1791,15 +1827,27 @@
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-                "source": "https://github.com/sebastianbergmann/recursion-context/tree/4.0.5"
+                "source": "https://github.com/sebastianbergmann/recursion-context/tree/4.0.6"
             },
             "funding": [
                 {
                     "url": "https://github.com/sebastianbergmann",
                     "type": "github"
+                },
+                {
+                    "url": "https://liberapay.com/sebastianbergmann",
+                    "type": "liberapay"
+                },
+                {
+                    "url": "https://thanks.dev/u/gh/sebastianbergmann",
+                    "type": "thanks_dev"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/sebastian/recursion-context",
+                    "type": "tidelift"
                 }
             ],
-            "time": "2023-02-03T06:07:39+00:00"
+            "time": "2025-08-10T06:57:39+00:00"
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             "name": "sebastian/resource-operations",

vendor/composer/autoload_classmap.php

@@ -22,6 +22,7 @@ return array(
     'IPLib\\Range\\Subnet' => $vendorDir . '/mlocati/ip-lib/src/Range/Subnet.php',
     'IPLib\\Range\\Type' => $vendorDir . '/mlocati/ip-lib/src/Range/Type.php',
     'IPLib\\Service\\BinaryMath' => $vendorDir . '/mlocati/ip-lib/src/Service/BinaryMath.php',
+    'IPLib\\Service\\NumberInChunks' => $vendorDir . '/mlocati/ip-lib/src/Service/NumberInChunks.php',
     'IPLib\\Service\\RangesFromBoundaryCalculator' => $vendorDir . '/mlocati/ip-lib/src/Service/RangesFromBoundaryCalculator.php',
     'IPLib\\Service\\UnsignedIntegerMath' => $vendorDir . '/mlocati/ip-lib/src/Service/UnsignedIntegerMath.php',
     'Identicon\\Generator\\BaseGenerator' => $vendorDir . '/yzalis/identicon/src/Identicon/Generator/BaseGenerator.php',

vendor/composer/autoload_static.php

@@ -70,6 +70,7 @@ class ComposerStaticInitDontChange
         'IPLib\\Range\\Subnet' => __DIR__ . '/..' . '/mlocati/ip-lib/src/Range/Subnet.php',
         'IPLib\\Range\\Type' => __DIR__ . '/..' . '/mlocati/ip-lib/src/Range/Type.php',
         'IPLib\\Service\\BinaryMath' => __DIR__ . '/..' . '/mlocati/ip-lib/src/Service/BinaryMath.php',
+        'IPLib\\Service\\NumberInChunks' => __DIR__ . '/..' . '/mlocati/ip-lib/src/Service/NumberInChunks.php',
         'IPLib\\Service\\RangesFromBoundaryCalculator' => __DIR__ . '/..' . '/mlocati/ip-lib/src/Service/RangesFromBoundaryCalculator.php',
         'IPLib\\Service\\UnsignedIntegerMath' => __DIR__ . '/..' . '/mlocati/ip-lib/src/Service/UnsignedIntegerMath.php',
         'Identicon\\Generator\\BaseGenerator' => __DIR__ . '/..' . '/yzalis/identicon/src/Identicon/Generator/BaseGenerator.php',

vendor/composer/installed.php

@@ -3,7 +3,7 @@
         'name' => 'privatebin/privatebin',
         'pretty_version' => 'dev-master',
         'version' => 'dev-master',
-        'reference' => '3ba29ea29e04d8a16d64e0f49994ba416c1b008f',
+        'reference' => '06496a1b0e975b79c5a7abc0bd54b492ca264640',
         'type' => 'project',
         'install_path' => __DIR__ . '/../../',
         'aliases' => array(),
@@ -20,9 +20,9 @@
             'dev_requirement' => false,
         ),
         'mlocati/ip-lib' => array(
-            'pretty_version' => '1.20.0',
+            'pretty_version' => '1.21.0',
-            'version' => '1.20.0.0',
+            'version' => '1.21.0.0',
-            'reference' => 'fd45fc3bf08ed6c7e665e2e70562082ac954afd4',
+            'reference' => 'b5d38cdcbfc1516604d821a1f3f4a1638f327267',
             'type' => 'library',
             'install_path' => __DIR__ . '/../mlocati/ip-lib',
             'aliases' => array(),
@@ -31,7 +31,7 @@
         'privatebin/privatebin' => array(
             'pretty_version' => 'dev-master',
             'version' => 'dev-master',
-            'reference' => '3ba29ea29e04d8a16d64e0f49994ba416c1b008f',
+            'reference' => '06496a1b0e975b79c5a7abc0bd54b492ca264640',
             'type' => 'project',
             'install_path' => __DIR__ . '/../../',
             'aliases' => array(),

vendor/mlocati/ip-lib/src/Address/AddressInterface.php

@@ -110,11 +110,12 @@ interface AddressInterface
     /**
      * Get the address at a certain distance from this address.
      *
-     * @param int $n the distance of the address (can be negative)
+     * @param int|numeric-string $n the distance of the address (can be negative)
      *
-     * @return \IPLib\Address\AddressInterface|null return NULL if $n is not an integer or if the final address would be invalid
+     * @return \IPLib\Address\AddressInterface|null return NULL if $n is not an integer or NULL if $n is neither an integer nor a string containing a valid integer, or if the final address would be invalid
      *
      * @since 1.15.0
+     * @since 1.21.0 $n can also be a numeric string
      *
      * @example passing 1 to the address 127.0.0.1 will result in 127.0.0.2
      * @example passing -1 to the address 127.0.0.1 will result in 127.0.0.0

vendor/mlocati/ip-lib/src/Address/IPv4.php

@@ -6,6 +6,8 @@ use IPLib\ParseStringFlag;
 use IPLib\Range\RangeInterface;
 use IPLib\Range\Subnet;
 use IPLib\Range\Type as RangeType;
+use IPLib\Service\BinaryMath;
+use IPLib\Service\NumberInChunks;
 
 /**
  * An IPv4 address.
@@ -456,28 +458,24 @@ class IPv4 implements AddressInterface
      */
     public function getAddressAtOffset($n)
     {
-        if (!is_int($n)) {
+        if (is_int($n)) {
+            $thatChunks = NumberInChunks::fromInteger($n, NumberInChunks::CHUNKSIZE_BYTES);
+        } elseif (($s = BinaryMath::getInstance()->normalizeIntegerString($n)) !== '') {
+            $thatChunks = NumberInChunks::fromNumericString($s, NumberInChunks::CHUNKSIZE_BYTES);
+        } else {
+            return null;
+        }
+        $myBytes = $this->getBytes();
+        while (isset($myBytes[1]) && $myBytes[0] === 0) {
+            array_shift($myBytes);
+        }
+        $myChunks = new NumberInChunks(false, $myBytes, NumberInChunks::CHUNKSIZE_BYTES);
+        $result = $myChunks->add($thatChunks);
+        if ($result->negative || count($result->chunks) > 4) {
             return null;
         }
 
-        $boundary = 256;
+        return static::fromBytes(array_pad($result->chunks, -4, 0));
-        $mod = $n;
-        $bytes = $this->getBytes();
-        for ($i = count($bytes) - 1; $i >= 0; $i--) {
-            $tmp = ($bytes[$i] + $mod) % $boundary;
-            $mod = (int) floor(($bytes[$i] + $mod) / $boundary);
-            if ($tmp < 0) {
-                $tmp += $boundary;
-            }
-
-            $bytes[$i] = $tmp;
-        }
-
-        if ($mod !== 0) {
-            return null;
-        }
-
-        return static::fromBytes($bytes);
     }
 
     /**

vendor/mlocati/ip-lib/src/Address/IPv6.php

@@ -6,6 +6,8 @@ use IPLib\ParseStringFlag;
 use IPLib\Range\RangeInterface;
 use IPLib\Range\Subnet;
 use IPLib\Range\Type as RangeType;
+use IPLib\Service\BinaryMath;
+use IPLib\Service\NumberInChunks;
 
 /**
  * An IPv6 address.
@@ -549,28 +551,24 @@ class IPv6 implements AddressInterface
      */
     public function getAddressAtOffset($n)
     {
-        if (!is_int($n)) {
+        if (is_int($n)) {
+            $thatChunks = NumberInChunks::fromInteger($n, NumberInChunks::CHUNKSIZE_WORDS);
+        } elseif (($s = BinaryMath::getInstance()->normalizeIntegerString($n)) !== '') {
+            $thatChunks = NumberInChunks::fromNumericString($s, NumberInChunks::CHUNKSIZE_WORDS);
+        } else {
+            return null;
+        }
+        $myWords = $this->getWords();
+        while (isset($myWords[1]) && $myWords[0] === 0) {
+            array_shift($myWords);
+        }
+        $myChunks = new NumberInChunks(false, $myWords, NumberInChunks::CHUNKSIZE_WORDS);
+        $result = $myChunks->add($thatChunks);
+        if ($result->negative || count($result->chunks) > 8) {
             return null;
         }
 
-        $boundary = 0x10000;
+        return static::fromWords(array_pad($result->chunks, -8, 0));
-        $mod = $n;
-        $words = $this->getWords();
-        for ($i = count($words) - 1; $i >= 0; $i--) {
-            $tmp = ($words[$i] + $mod) % $boundary;
-            $mod = (int) floor(($words[$i] + $mod) / $boundary);
-            if ($tmp < 0) {
-                $tmp += $boundary;
-            }
-
-            $words[$i] = $tmp;
-        }
-
-        if ($mod !== 0) {
-            return null;
-        }
-
-        return static::fromWords($words);
     }
 
     /**
@@ -645,7 +643,7 @@ class IPv6 implements AddressInterface
         }
         $myWords = $this->getWords();
         $otherWords = $other->getWords();
-        $sum = array_fill(0, 7, 0);
+        $sum = array_fill(0, 8, 0);
         $carry = 0;
         for ($index = 7; $index >= 0; $index--) {
             $word = $myWords[$index] + $otherWords[$index] + $carry;

vendor/mlocati/ip-lib/src/Range/AbstractRange.php

@@ -7,6 +7,7 @@ use IPLib\Address\IPv4;
 use IPLib\Address\IPv6;
 use IPLib\Address\Type as AddressType;
 use IPLib\Factory;
+use IPLib\Service\BinaryMath;
 use OutOfBoundsException;
 
 /**
@@ -59,17 +60,26 @@ abstract class AbstractRange implements RangeInterface
      */
     public function getAddressAtOffset($n)
     {
-        if (!is_int($n)) {
+        if (is_int($n)) {
+            $positive = $n >= 0;
+            if ($positive === false) {
+                $nPlus1 = $n + 1;
+            }
+        } elseif (($s = BinaryMath::getInstance()->normalizeIntegerString($n)) !== '') {
+            $n = $s;
+            $positive = $n[0] !== '-';
+            if ($positive === false) {
+                $nPlus1 = BinaryMath::getInstance()->add1ToIntegerString($n);
+            }
+        } else {
             return null;
         }
-
+        if ($positive) {
-        $address = null;
-        if ($n >= 0) {
             $start = Factory::parseAddressString($this->getComparableStartString());
             $address = $start->getAddressAtOffset($n);
         } else {
             $end = Factory::parseAddressString($this->getComparableEndString());
-            $address = $end->getAddressAtOffset($n + 1);
+            $address = $end->getAddressAtOffset($nPlus1);
         }
 
         if ($address === null) {

vendor/mlocati/ip-lib/src/Range/Pattern.php

@@ -7,6 +7,7 @@ use IPLib\Address\IPv4;
 use IPLib\Address\IPv6;
 use IPLib\Address\Type as AddressType;
 use IPLib\ParseStringFlag;
+use IPLib\Service\BinaryMath;
 
 /**
  * Represents an address range in pattern format (only ending asterisks are supported).
@@ -304,7 +305,21 @@ class Pattern extends AbstractRange
         $maxPrefix = $fromAddress::getNumberOfBits();
         $prefix = $this->getNetworkPrefix();
 
-        return pow(2, ($maxPrefix - $prefix));
+        return pow(2, $maxPrefix - $prefix);
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @see \IPLib\Range\RangeInterface::getExactSize()
+     */
+    public function getExactSize()
+    {
+        $fromAddress = $this->fromAddress;
+        $maxPrefix = $fromAddress::getNumberOfBits();
+        $prefix = $this->getNetworkPrefix();
+
+        return BinaryMath::getInstance()->pow2string($maxPrefix - $prefix);
     }
 
     /**

vendor/mlocati/ip-lib/src/Range/RangeInterface.php

@@ -46,11 +46,12 @@ interface RangeInterface
     /**
      * Get the address at a certain offset of this range.
      *
-     * @param int $n the offset of the address (support negative offset)
+     * @param int|numeric-string $n the offset of the address (support negative offset)
      *
-     * @return \IPLib\Address\AddressInterface|null return NULL if $n is not an integer or if the offset out of range
+     * @return \IPLib\Address\AddressInterface|null return NULL if $n is neither an integer nor a string containing a valid integer, or if the offset out of range
      *
      * @since 1.15.0
+     * @since 1.21.0 $n can also be a numeric string
      *
      * @example passing 256 to the range 127.0.0.0/16 will result in 127.0.1.0
      * @example passing -1 to the range 127.0.1.0/16 will result in 127.0.255.255
@@ -150,14 +151,23 @@ interface RangeInterface
     public function getReverseDNSLookupName();
 
     /**
-     * Get the count of addresses this IP range contains.
+     * Get the count of addresses contained in this IP range (possibly approximated).
      *
-     * @return int|float Return float as for huge IPv6 networks, int is not enough
+     * @return int|float If the number of addresses exceeds PHP_INT_MAX a float containing an approximation will be returned
      *
      * @since 1.16.0
      */
     public function getSize();
 
+    /**
+     * Get the exact count of addresses contained in this IP range.
+     *
+     * @return int|numeric-string If the number of addresses exceeds PHP_INT_MAX a string containing the exact number of addresses will be returned
+     *
+     * @since 1.21.0
+     */
+    public function getExactSize();
+
     /**
      * Get the "network prefix", that is how many bits of the address are dedicated to the network portion.
      *

vendor/mlocati/ip-lib/src/Range/Single.php

@@ -237,6 +237,16 @@ class Single extends AbstractRange
         return 1;
     }
 
+    /**
+     * {@inheritdoc}
+     *
+     * @see \IPLib\Range\RangeInterface::getExactSize()
+     */
+    public function getExactSize()
+    {
+        return 1;
+    }
+
     /**
      * {@inheritdoc}
      *

vendor/mlocati/ip-lib/src/Range/Subnet.php

@@ -7,6 +7,7 @@ use IPLib\Address\IPv4;
 use IPLib\Address\Type as AddressType;
 use IPLib\Factory;
 use IPLib\ParseStringFlag;
+use IPLib\Service\BinaryMath;
 
 /**
  * Represents an address range in subnet format (eg CIDR).
@@ -348,6 +349,20 @@ class Subnet extends AbstractRange
         $maxPrefix = $fromAddress::getNumberOfBits();
         $prefix = $this->getNetworkPrefix();
 
-        return pow(2, ($maxPrefix - $prefix));
+        return pow(2, $maxPrefix - $prefix);
+    }
+
+    /**
+     * {@inheritdoc}
+     *
+     * @see \IPLib\Range\RangeInterface::getExactSize()
+     */
+    public function getExactSize()
+    {
+        $fromAddress = $this->fromAddress;
+        $maxPrefix = $fromAddress::getNumberOfBits();
+        $prefix = $this->getNetworkPrefix();
+
+        return BinaryMath::getInstance()->pow2string($maxPrefix - $prefix);
     }
 }

vendor/mlocati/ip-lib/src/Range/Type.php

@@ -120,29 +120,29 @@ class Type
             case static::T_UNSPECIFIED:
                 return 'Unspecified/unknown address';
             case static::T_RESERVED:
-                 return 'Reserved/internal use only';
+                return 'Reserved/internal use only';
             case static::T_THISNETWORK:
-                 return 'Refer to source hosts on "this" network';
+                return 'Refer to source hosts on "this" network';
             case static::T_LOOPBACK:
-                 return 'Internet host loopback address';
+                return 'Internet host loopback address';
             case static::T_ANYCASTRELAY:
-                 return 'Relay anycast address';
+                return 'Relay anycast address';
             case static::T_LIMITEDBROADCAST:
-                 return '"Limited broadcast" destination address';
+                return '"Limited broadcast" destination address';
             case static::T_MULTICAST:
-                 return 'Multicast address assignments - Indentify a group of interfaces';
+                return 'Multicast address assignments - Indentify a group of interfaces';
             case static::T_LINKLOCAL:
-                 return '"Link local" address, allocated for communication between hosts on a single link';
+                return '"Link local" address, allocated for communication between hosts on a single link';
             case static::T_LINKLOCAL_UNICAST:
                 return 'Link local unicast / Linked-scoped unicast';
             case static::T_DISCARDONLY:
-                 return 'Discard only';
+                return 'Discard only';
             case static::T_DISCARD:
-                 return 'Discard';
+                return 'Discard';
             case static::T_PRIVATENETWORK:
-                 return 'For use in private networks';
+                return 'For use in private networks';
             case static::T_PUBLIC:
-                 return 'Public address';
+                return 'Public address';
             case static::T_CGNAT:
                 return 'Carrier-grade NAT';
             default:

vendor/mlocati/ip-lib/src/Service/BinaryMath.php

@@ -9,6 +9,20 @@ namespace IPLib\Service;
  */
 class BinaryMath
 {
+    private static $instance;
+
+    /**
+     * @return \IPLib\Service\BinaryMath
+     */
+    public static function getInstance()
+    {
+        if (self::$instance === null) {
+            self::$instance = new self();
+        }
+
+        return self::$instance;
+    }
+
     /**
      * Trim the leading zeroes from a non-negative integer represented in binary form.
      *
@@ -97,6 +111,104 @@ class BinaryMath
         return $result;
     }
 
+    /**
+     * Compute 2 raised to the given exponent.
+     *
+     * If the result fits into a native PHP integer, an int is returned.
+     * If the result exceeds PHP_INT_MAX, a string containing the exact decimal representation is returned.
+     *
+     * @param int $exponent The non-negative exponent
+     *
+     * @return int|string
+     */
+    public function pow2string($exponent)
+    {
+        if ($exponent < PHP_INT_SIZE * 8 - 1) {
+            return 1 << $exponent;
+        }
+        $digits = array(1);
+        for ($i = 0; $i < $exponent; $i++) {
+            $carry = 0;
+            foreach ($digits as $index => $digit) {
+                $product = $digit * 2 + $carry;
+                $digits[$index] = $product % 10;
+                $carry = (int) ($product / 10);
+            }
+            if ($carry !== 0) {
+                $digits[] = $carry;
+            }
+        }
+
+        return implode('', array_reverse($digits));
+    }
+
+    /**
+     * @param numeric-string|mixed $value
+     *
+     * @return string empty string if $value is not a valid numeric string
+     */
+    public function normalizeIntegerString($value)
+    {
+        if (!is_string($value) || $value === '') {
+            return '';
+        }
+        $sign = $value[0];
+        if ($sign === '-' || $sign === '+') {
+            $value = substr($value, 1);
+        }
+        $matches = null;
+        if (!preg_match('/^0*([0-9]+)$/', $value, $matches)) {
+            return '';
+        }
+
+        return ($sign === '-' && $matches[1] !== '0' ? $sign : '') . $matches[1];
+    }
+
+    /**
+     * @param numeric-string $value a string that has been normalized with normalizeIntegerString()
+     *
+     * @return string
+     */
+    public function add1ToIntegerString($value)
+    {
+        if ($value[0] === '-') {
+            if ($value === '-1') {
+                return '0';
+            }
+            $digits = str_split(substr($value, 1));
+            $i = count($digits) - 1;
+            while ($i >= 0) {
+                if ($digits[$i] !== '0') {
+                    $digits[$i] = (string) ((int) $digits[$i] - 1);
+                    break;
+                }
+                $digits[$i] = '9';
+                $i--;
+            }
+            $imploded = implode('', $digits);
+            if ($imploded[0] === '0') {
+                $imploded = substr($imploded, 1);
+            }
+
+            return '-' . $imploded;
+        }
+        $digits = str_split($value);
+        $carry = 1;
+        for ($i = count($digits) - 1; $i >= 0; $i--) {
+            $sum = (int) $digits[$i] + $carry;
+            $digits[$i] = (string) ($sum % 10);
+            $carry = (int) ($sum / 10);
+            if ($carry === 0) {
+                break;
+            }
+            if ($i === 0) {
+                array_unshift($digits, (string) $carry);
+            }
+        }
+
+        return implode('', $digits);
+    }
+
     /**
      * Zero-padding of two non-negative integers represented in binary form, so that they have the same length.
      *

vendor/mlocati/ip-lib/src/Service/NumberInChunks.php

@@ -0,0 +1,253 @@
+<?php
+
+namespace IPLib\Service;
+
+use InvalidArgumentException;
+
+/**
+ * @internal
+ *
+ * @readonly
+ */
+class NumberInChunks
+{
+    const CHUNKSIZE_BYTES = 8;
+
+    const CHUNKSIZE_WORDS = 16;
+
+    /**
+     * @var bool
+     */
+    public $negative;
+
+    /**
+     * @var int[]
+     */
+    public $chunks;
+
+    /**
+     * @var int
+     */
+    public $chunkSize;
+
+    /**
+     * @param bool $negative
+     * @param int[] $chunks
+     * @param int $chunkSize
+     */
+    public function __construct($negative, array $chunks, $chunkSize)
+    {
+        $this->negative = $negative;
+        $this->chunks = $chunks;
+        $this->chunkSize = $chunkSize;
+    }
+
+    /**
+     * @throws \InvalidArgumentException if $other has a $chunkSize that's not the same as the $chunkSize of this
+     *
+     * @return \IPLib\Service\NumberInChunks
+     */
+    public function negate()
+    {
+        return new self($this->chunks === array(0) ? false : !$this->negative, $this->chunks, $this->chunkSize);
+    }
+
+    /**
+     * @throws \InvalidArgumentException if $other has a $chunkSize that's not the same as the $chunkSize of this
+     *
+     * @return \IPLib\Service\NumberInChunks
+     */
+    public function add(NumberInChunks $that)
+    {
+        if ($this->chunkSize !== $that->chunkSize) {
+            throw new InvalidArgumentException('Incompatible chunk size');
+        }
+        if ($this->negative === $that->negative) {
+            return new self($this->negative, self::addChunks($this->chunks, $that->chunks, $this->chunkSize), $this->chunkSize);
+        }
+        if ($that->negative) {
+            list($negative, $chunks) = self::substractChunks($this->chunks, $that->chunks, $this->chunkSize);
+        } else {
+            list($negative, $chunks) = self::substractChunks($that->chunks, $this->chunks, $this->chunkSize);
+        }
+
+        return new self($negative, $chunks, $this->chunkSize);
+    }
+
+    /**
+     * @param int $int
+     * @param int $chunkSize
+     *
+     * @return \IPLib\Service\NumberInChunks
+     */
+    public static function fromInteger($int, $chunkSize)
+    {
+        if ($int === 0) {
+            return new self(false, array(0), $chunkSize);
+        }
+        $negative = $int < 0;
+        if ($negative) {
+            $positiveInt = -$int;
+            if (is_float($positiveInt)) { // -PHP_INT_MIN is bigger than PHP_INT_MAX
+                return self::fromNumericString((string) $int, $chunkSize);
+            }
+            $int = $positiveInt;
+        }
+        $bitMask = (1 << $chunkSize) - 1;
+        $chunks = array();
+        while ($int !== 0) {
+            $chunks[] = $int & $bitMask;
+            $int >>= $chunkSize;
+        }
+
+        return new self($negative, array_reverse($chunks), $chunkSize);
+    }
+
+    /**
+     * @param string $numericString a string normalized with BinaryMath::normalizeIntegerString()
+     * @param int $chunkSize
+     *
+     * @return \IPLib\Service\NumberInChunks
+     */
+    public static function fromNumericString($numericString, $chunkSize)
+    {
+        if ($numericString === '0') {
+            return new self(false, array(0), $chunkSize);
+        }
+        $negative = $numericString[0] === '-';
+        if ($negative) {
+            $numericString = substr($numericString, 1);
+        }
+        $chunks = array();
+        while ($numericString !== '0') {
+            $chunks[] = self::modulo($numericString, $chunkSize);
+            $numericString = self::divide($numericString, $chunkSize);
+        }
+
+        return new self($negative, array_reverse($chunks), $chunkSize);
+    }
+
+    /**
+     * @param string $numericString
+     * @param int $chunkSize
+     *
+     * @return int
+     */
+    private static function modulo($numericString, $chunkSize)
+    {
+        $divisor = 1 << $chunkSize;
+        $carry = 0;
+        $len = strlen($numericString);
+        for ($i = 0; $i < $len; $i++) {
+            $digit = (int) $numericString[$i];
+            $carry = ($carry * 10 + $digit) % $divisor;
+        }
+
+        return $carry;
+    }
+
+    /**
+     * @param string $numericString
+     * @param int $chunkSize
+     *
+     * @return string
+     */
+    private static function divide($numericString, $chunkSize)
+    {
+        $divisor = 1 << $chunkSize;
+        $quotient = '';
+        $carry = 0;
+        $len = strlen($numericString);
+        for ($i = 0; $i < $len; $i++) {
+            $digit = (int) $numericString[$i];
+            $value = $carry * 10 + $digit;
+            $quotient .= (string) ($value >> $chunkSize);
+            $carry = $value % $divisor;
+        }
+
+        return ltrim($quotient, '0') ?: '0';
+    }
+
+    /**
+     * @param int[] $addend1
+     * @param int[] $addend2
+     * @param int $chunkSize
+     *
+     * @return int[]
+     */
+    private static function addChunks(array $addend1, array $addend2, $chunkSize)
+    {
+        $divisor = 1 << $chunkSize;
+        $result = array();
+        $carry = 0;
+        while ($addend1 !== array() || $addend2 !== array()) {
+            $sum = $carry + (array_pop($addend1) ?: 0) + (array_pop($addend2) ?: 0);
+            $result[] = $sum % $divisor;
+            $carry = $sum >> $chunkSize;
+        }
+        if ($carry !== 0) {
+            $result[] = $carry;
+        }
+
+        return array_reverse($result);
+    }
+
+    /**
+     * @param int[] $minuend
+     * @param int[] $subtrahend
+     * @param int $chunkSize
+     *
+     * @return array
+     */
+    private static function substractChunks(array $minuend, array $subtrahend, $chunkSize)
+    {
+        $minuendCount = count($minuend);
+        $subtrahendCount = count($subtrahend);
+        if ($minuendCount > $subtrahendCount) {
+            $count = $minuendCount;
+            $negative = false;
+        } elseif ($minuendCount < $subtrahendCount) {
+            $count = $subtrahendCount;
+            $negative = true;
+        } else {
+            $count = $minuendCount;
+            $negative = false;
+            for ($i = 0; $i < $count; $i++) {
+                $delta = $minuend[$i] - $subtrahend[$i];
+                if ($delta === 0) {
+                    continue;
+                }
+                if ($delta < 0) {
+                    $negative = true;
+                }
+                break;
+            }
+        }
+        if ($negative) {
+            list($minuend, $subtrahend) = array($subtrahend, $minuend);
+        }
+        $subtrahend = array_pad($subtrahend, -$count, 0);
+        $borrowValue = 1 << $chunkSize;
+        $result = array();
+        $borrow = 0;
+        for ($i = $count - 1; $i >= 0; $i--) {
+            $value = $minuend[$i] - $subtrahend[$i] - $borrow;
+            if ($value < 0) {
+                $value += $borrowValue;
+                $borrow = 1;
+            } else {
+                $borrow = 0;
+            }
+            $result[] = $value;
+        }
+        while (isset($result[1])) {
+            $value = array_pop($result);
+            if ($value !== 0) {
+                $result[] = $value;
+                break;
+            }
+        }
+
+        return array($negative, array_reverse($result));
+    }
+}

vendor/mlocati/ip-lib/src/Service/RangesFromBoundaryCalculator.php

@@ -50,7 +50,7 @@ class RangesFromBoundaryCalculator
      */
     public function __construct($numBits)
     {
-        $this->math = new BinaryMath();
+        $this->math = BinaryMath::getInstance();
         $this->setNumBits($numBits);
     }