Add warning if host is accessed via verify_peer or verify_peer_name disabled (#10722)

src/Composer/Config.php

@@ -107,6 +107,8 @@ class Config
     private $useEnvironment;
     /** @var array<string, true> */
     private $warnedHosts = array();
+    /** @var array<string, true> */
+    private $sslVerifyWarnedHosts = array();
     /** @var array<string, string> */
     private $sourceOfConfigValue = array();
 
@@ -575,10 +577,11 @@ class Config
      *
      * @param string      $url
      * @param IOInterface $io
+     * @param mixed[]     $repoOptions
      *
      * @return void
      */
-    public function prohibitUrlByConfig(string $url, IOInterface $io = null): void
+    public function prohibitUrlByConfig(string $url, IOInterface $io = null, array $repoOptions = []): void
     {
         // Return right away if the URL is malformed or custom (see issue #5173)
         if (false === filter_var($url, FILTER_VALIDATE_URL)) {
@@ -600,16 +603,31 @@ class Config
 
                 throw new TransportException("Your configuration does not allow connections to $url. See https://getcomposer.org/doc/06-config.md#secure-http for details.");
             }
-            if ($io) {
+            if ($io  !== null) {
-                $host = parse_url($url, PHP_URL_HOST);
+                if (is_string($hostname)) {
-                if (is_string($host)) {
+                    if (!isset($this->warnedHosts[$hostname])) {
-                    if (!isset($this->warnedHosts[$host])) {
+                        $io->writeError("<warning>Warning: Accessing $hostname over $scheme which is an insecure protocol.</warning>");
-                        $io->writeError("<warning>Warning: Accessing $host over $scheme which is an insecure protocol.</warning>");
                     }
-                    $this->warnedHosts[$host] = true;
+                    $this->warnedHosts[$hostname] = true;
                 }
             }
         }
+
+        if ($io !== null && is_string($hostname) && !isset($this->sslVerifyWarnedHosts[$hostname])) {
+            $warning = null;
+            if (isset($repoOptions['ssl']['verify_peer']) && !(bool) $repoOptions['ssl']['verify_peer']) {
+                $warning = 'verify_peer';
+            }
+
+            if (isset($repoOptions['ssl']['verify_peer_name']) && !(bool) $repoOptions['ssl']['verify_peer_name']) {
+                $warning = $warning === null ? 'verify_peer_name' : $warning . ' and verify_peer_name';
+            }
+
+            if ($warning !== null) {
+                $io->writeError("<warning>Warning: Accessing $hostname with $warning disabled.</warning>");
+                $this->sslVerifyWarnedHosts[$hostname] = true;
+            }
+        }
     }
 
     /**

src/Composer/Util/Http/CurlDownloader.php

@@ -168,7 +168,7 @@ class CurlDownloader
 
         // check URL can be accessed (i.e. is not insecure), but allow insecure Packagist calls to $hashed providers as file integrity is verified with sha256
         if (!Preg::isMatch('{^http://(repo\.)?packagist\.org/p/}', $url) || (false === strpos($url, '$') && false === strpos($url, '%24'))) {
-            $this->config->prohibitUrlByConfig($url, $this->io);
+            $this->config->prohibitUrlByConfig($url, $this->io, $options);
         }
 
         $curlHandle = curl_init();

tests/Composer/Test/ConfigTest.php

@@ -13,6 +13,9 @@
 namespace Composer\Test;
 
 use Composer\Config;
+use Composer\IO\BaseIO;
+use Composer\IO\IOInterface;
+use Composer\IO\NullIO;
 use Composer\Util\Platform;
 
 class ConfigTest extends TestCase
@@ -308,6 +311,24 @@ class ConfigTest extends TestCase
         }, $urls));
     }
 
+    public function testProhibitedUrlsWarningVerifyPeer(): void
+    {
+        $io = $this->getMockBuilder(IOInterface::class)->disableOriginalConstructor()->getMock();
+
+        $io
+            ->expects($this->once())
+            ->method('writeError')
+            ->with($this->equalTo('<warning>Warning: Accessing example.org with verify_peer and verify_peer_name disabled.</warning>'));
+
+        $config = new Config(false);
+        $config->prohibitUrlByConfig('https://example.org', $io, [
+            'ssl' => [
+                'verify_peer' => false,
+                'verify_peer_name' => false,
+            ]
+        ]);
+    }
+
     /**
      * @group TLS
      */