Export advisories in OSV format

Fixes FriendsOfPHP#576

.github/workflows/export-osv.yaml

@@ -0,0 +1,34 @@
+name: Export to OSV format
+
+on:
+    push:
+        branches:
+            -   export-osv
+
+jobs:
+    publish-web:
+        runs-on: ubuntu-latest
+
+        steps:
+            -   uses: actions/checkout@v2
+
+            -   name: Setup PHP
+                uses: shivammathur/setup-php@v2
+                with:
+                    php-version: "8.0"
+                    coverage: none
+                    tools: composer
+
+            -   run: |
+                    git config user.name github-actions
+                    git config user.email [email protected]
+                    composer install --prefer-dist --no-progress
+                    php export-osv.php packagist
+                    git add .
+                    git stash
+                    git pull osv
+                    git checkout osv
+                    rm -rf packagist
+                    git stash pop
+                    git commit -m "Update OSV data export" || true
+                    git push || true

.github/workflows/php.yaml

@@ -1,27 +1,27 @@
 name: Validation
 
 on:
-  push:
-  pull_request:
+    push:
+    pull_request:
 
 jobs:
-  run:
-    runs-on: ubuntu-latest
+    run:
+        runs-on: ubuntu-latest
 
-    name: Validation
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v2
+        name: Validation
+        steps:
+            -   name: Checkout
+                uses: actions/checkout@v2
 
-    - name: Setup PHP
-      uses: shivammathur/setup-php@v2
-      with:
-        php-version: "8.0"
-        coverage: none        
-        tools: composer
+            -   name: Setup PHP
+                uses: shivammathur/setup-php@v2
+                with:
+                    php-version: "8.0"
+                    coverage: none
+                    tools: composer
 
-    - name: Install dependencies
-      run: composer install --prefer-dist --no-progress
+            -   name: Install dependencies
+                run: composer install --prefer-dist --no-progress
 
-    - name: Run tests
-      run: php -d memory_limit=-1 validator.php
+            -   name: Run tests
+                run: php -d memory_limit=-1 validator.php

README.md

@@ -7,6 +7,9 @@ not** serve as the primary source of information for security issues, it is
 not authoritative for any referenced software, but it allows to centralize
 information for convenience and easy consumption.
 
+We also export advisory data to the [OSV](https://github.com/ossf/osv-schema) format,
+see the [`osv`](https://github.com/FriendsOfPHP/security-advisories/tree/osv) branch.
+
 License
 -------
 

export-osv.php

@@ -0,0 +1,119 @@
+<?php
+
+/**
+ * Script for exporting advisories to OSV format.
+ *
+ * Usage: `php export-osv.php target_folder`
+ *
+ * @see https://ossf.github.io/osv-schema/
+ */
+
+namespace FriendsOfPhp\SecurityAdvisories;
+
+use DirectoryIterator;
+use FilesystemIterator;
+use SplFileInfo;
+use Symfony\Component\Yaml\Yaml;
+
+if (!is_file($autoloader = __DIR__ . '/vendor/autoload.php')) {
+    echo 'Dependencies are not installed, please run "composer install" first!' . PHP_EOL;
+    exit(1);
+}
+
+require $autoloader;
+
+function convertToOsv(SplFileInfo $fileInfo, string $package): array
+{
+    $advisory = Yaml::parseFile($fileInfo->getPathname());
+
+    return [
+        'id' => $advisory['cve'] ?? 'PHPSEC-' . $fileInfo->getBasename('.yaml'),
+        'modified' => getDateFromGitLog($fileInfo),
+        'published' => getDateFromGitLog($fileInfo, true),
+        'aliases' => [],
+        'related' => [],
+        'summary' => $advisory['title'] ?? '',
+        'details' => '',
+        'affected' => [
+            'package' => [
+                'ecosystem' => 'Packagist',
+                'name' => $package,
+                'purl' => sprintf('pkg:packagist/%s', $package),
+            ],
+            'ranges' => [
+                'type' => 'SEMVER',
+                'events' => getEvents($advisory['branches']),
+            ],
+        ],
+        'references' => [
+            array_key_exists('link', $advisory) ? [
+                'type' => 'ADVISORY',
+                'url' => $advisory['link'],
+            ] : null,
+            [
+                'type' => 'PACKAGE',
+                'url' => 'https://packagist.org/packages/' . $package,
+            ],
+        ],
+    ];
+}
+
+function getEvents(array $branches): array
+{
+    $events = [];
+
+    foreach (array_column($branches, 'versions') as $branch) {
+        if (count($branch) === 2) {
+            array_push($events, ['introduced' => $branch[0]]);
+            array_push($events, ['fixed' => $branch[1]]);
+        } else {
+            array_push($events, ['fixed' => $branch[0]]);
+        }
+    }
+
+    return $events;
+}
+
+function getDateFromGitLog(SplFileInfo $fileInfo, bool $created = false): string
+{
+    $timestamp = shell_exec(sprintf(
+        'git log --format="%%at" %s %s %s %s',
+        $created ? '' : '--max-count 1',
+        $created ? '--reverse' : '',
+        escapeshellarg($fileInfo->getPathname()),
+        $created ? '| head -1' : ''
+    ));
+
+    return date('Y-m-d\TH:i:s\Z', (int) trim($timestamp));
+}
+
+mkdir($targetFolder = $argv[1] ?? 'packagist');
+
+$namespaceIterator = new DirectoryIterator(__DIR__);
+
+// Package namespaces
+foreach ($namespaceIterator as $namespaceInfo) {
+    if ($namespaceInfo->isDot() || !$namespaceInfo->isDir() || $namespaceInfo->getFilename() === 'vendor' || strpos($namespaceInfo->getFilename() , '.') === 0) continue;
+
+    $namespace = $namespaceInfo->getFilename();
+    $packageIterator = new DirectoryIterator($namespaceInfo->getPathname());
+
+    // Packages inside namespace
+    foreach ($packageIterator as $packageInfo) {
+        if ($packageIterator->isDot() || !$packageInfo->isDir()) continue;
+
+        $package = $packageInfo->getFilename();
+        $fileSystemIterator = new FilesystemIterator($packageInfo->getPathname());
+
+        foreach ($fileSystemIterator as $fileInfo) {
+            echo 'Converting "' . $namespace . '/' . $package . '" ...' . str_repeat(' ', 20) . "\r";
+            $osv = convertToOsv($fileInfo, $namespace . '/' . $package);
+            // TODO Handle duplicate IDs
+            $path = $targetFolder . DIRECTORY_SEPARATOR . $osv['id'] . '.json';
+
+            file_put_contents($path, json_encode($osv, JSON_PRETTY_PRINT));
+        }
+    }
+}
+
+echo PHP_EOL;