Fix a PHP 8.1 strlen() issue with "mysql.pass" configuration

Summary:
Ref T13588. This configuration value may not be set.

Also fix an issue in `bin/storage` and whatever else I hit between now and this diff actually uploading.

Also fix a MySQLi report mode difference, beginning in PHP 8.1.

Also update a bunch of "static" property usage in Lisk.

Test Plan: Ran `bin/files ...` locally under PHP 8.1.

Maniphest Tasks: T13588

Differential Revision: https://secure.phabricator.com/D21744

.arclint

@@ -79,7 +79,8 @@
     "xhpast": {
       "type": "xhpast",
       "include": "(\\.php$)",
-      "standard": "phutil.xhpast"
+      "standard": "phutil.xhpast",
+      "xhpast.php-version": "5.5"
     }
   }
 }

scripts/sql/manage_storage.php

@@ -95,7 +95,7 @@ if (!$refs) {
 
 $host = $args->getArg('host');
 $ref_key = $args->getArg('ref');
-if (strlen($host) || strlen($ref_key)) {
+if (($host !== null) || ($ref_key !== null)) {
   if ($host && $ref_key) {
     throw new PhutilArgumentUsageException(
       pht(

src/applications/files/engine/PhabricatorLocalDiskFileStorageEngine.php

@@ -26,6 +26,7 @@ final class PhabricatorLocalDiskFileStorageEngine
 
   public function canWriteFiles() {
     $path = PhabricatorEnv::getEnvConfig('storage.local-disk.path');
+    $path = phutil_string_cast($path);
     return (bool)strlen($path);
   }
 

src/applications/meta/query/PhabricatorApplicationQuery.php

@@ -89,7 +89,7 @@ final class PhabricatorApplicationQuery
       }
     }
 
-    if (strlen($this->nameContains)) {
+    if ($this->nameContains !== null) {
       foreach ($apps as $key => $app) {
         if (stripos($app->getName(), $this->nameContains) === false) {
           unset($apps[$key]);

src/applications/people/query/PhabricatorPeopleQuery.php

@@ -341,7 +341,7 @@ final class PhabricatorPeopleQuery
         (int)$this->isMailingList);
     }
 
-    if (strlen($this->nameLike)) {
+    if ($this->nameLike !== null) {
       $where[] = qsprintf(
         $conn,
         'user.username LIKE %~ OR user.realname LIKE %~',

src/applications/people/storage/PhabricatorUser.php

@@ -275,7 +275,8 @@ final class PhabricatorUser
       $this->setConduitCertificate($this->generateConduitCertificate());
     }
 
-    if (!strlen($this->getAccountSecret())) {
+    $secret = $this->getAccountSecret();
+    if (($secret === null) || !strlen($secret)) {
       $this->setAccountSecret(Filesystem::readRandomCharacters(64));
     }
 

src/applications/phid/handle/pool/PhabricatorHandleList.php

@@ -126,22 +126,27 @@ final class PhabricatorHandleList
 /* -(  Iterator  )----------------------------------------------------------- */
 
 
+  #[\ReturnTypeWillChange]
   public function rewind() {
     $this->cursor = 0;
   }
 
+  #[\ReturnTypeWillChange]
   public function current() {
     return $this->getHandle($this->phids[$this->cursor]);
   }
 
+  #[\ReturnTypeWillChange]
   public function key() {
     return $this->phids[$this->cursor];
   }
 
+  #[\ReturnTypeWillChange]
   public function next() {
     ++$this->cursor;
   }
 
+  #[\ReturnTypeWillChange]
   public function valid() {
     return ($this->cursor < $this->count);
   }
@@ -150,6 +155,7 @@ final class PhabricatorHandleList
 /* -(  ArrayAccess  )-------------------------------------------------------- */
 
 
+  #[\ReturnTypeWillChange]
   public function offsetExists($offset) {
     // NOTE: We're intentionally not loading handles here so that isset()
     // checks do not trigger fetches. This gives us better bulk loading
@@ -162,6 +168,7 @@ final class PhabricatorHandleList
     return isset($this->map[$offset]);
   }
 
+  #[\ReturnTypeWillChange]
   public function offsetGet($offset) {
     if ($this->handles === null) {
       $this->loadHandles();
@@ -169,10 +176,12 @@ final class PhabricatorHandleList
     return $this->handles[$offset];
   }
 
+  #[\ReturnTypeWillChange]
   public function offsetSet($offset, $value) {
     $this->raiseImmutableException();
   }
 
+  #[\ReturnTypeWillChange]
   public function offsetUnset($offset) {
     $this->raiseImmutableException();
   }
@@ -189,6 +198,7 @@ final class PhabricatorHandleList
 /* -(  Countable  )---------------------------------------------------------- */
 
 
+  #[\ReturnTypeWillChange]
   public function count() {
     return $this->count;
   }

src/infrastructure/cluster/PhabricatorDatabaseRef.php

@@ -322,6 +322,7 @@ final class PhabricatorDatabaseRef
     $default_user = PhabricatorEnv::getEnvConfig('mysql.user');
 
     $default_pass = PhabricatorEnv::getEnvConfig('mysql.pass');
+    $default_pass = phutil_string_cast($default_pass);
     $default_pass = new PhutilOpaqueEnvelope($default_pass);
 
     $config = PhabricatorEnv::getEnvConfig('cluster.databases');

src/infrastructure/query/PhabricatorQuery.php

@@ -87,7 +87,7 @@ abstract class PhabricatorQuery extends Phobject {
         foreach ($this->flattenSubclause($part) as $subpart) {
           $result[] = $subpart;
         }
-      } else if (strlen($part)) {
+      } else if (($part !== null) && strlen($part)) {
         $result[] = $part;
       }
     }

src/infrastructure/storage/connection/mysql/AphrontMySQLiDatabaseConnection.php

@@ -57,6 +57,13 @@ final class AphrontMySQLiDatabaseConnection
       }
     }
 
+    // See T13588. In PHP 8.1, the default "report mode" for MySQLi has
+    // changed, which causes MySQLi to raise exceptions. Disable exceptions
+    // to align behavior with older default behavior under MySQLi, which
+    // this code expects. Plausibly, this code could be updated to use
+    // MySQLi exceptions to handle errors under a wider range of PHP versions.
+    mysqli_report(MYSQLI_REPORT_OFF);
+
     $conn = mysqli_init();
 
     $timeout = $this->getConfiguration('timeout');

src/infrastructure/storage/lisk/LiskDAO.php

@@ -193,6 +193,8 @@ abstract class LiskDAO extends Phobject
 
   private static $connections       = array();
 
+  private static $liskMetadata = array();
+
   protected $id;
   protected $phid;
   protected $dateCreated;
@@ -403,10 +405,11 @@ abstract class LiskDAO extends Phobject
    *  @task   config
    */
   public function getConfigOption($option_name) {
-    static $options = null;
+    $options = $this->getLiskMetadata('config');
 
-    if (!isset($options)) {
+    if ($options === null) {
       $options = $this->getConfiguration();
+      $this->setLiskMetadata('config', $options);
     }
 
     return idx($options, $option_name);
@@ -439,7 +442,7 @@ abstract class LiskDAO extends Phobject
 
     return $this->loadOneWhere(
       '%C = %d',
-      $this->getIDKeyForUse(),
+      $this->getIDKey(),
       $id);
   }
 
@@ -554,7 +557,7 @@ abstract class LiskDAO extends Phobject
 
     $result = $this->loadOneWhere(
       '%C = %d',
-      $this->getIDKeyForUse(),
+      $this->getIDKey(),
       $this->getID());
 
     if (!$result) {
@@ -579,9 +582,10 @@ abstract class LiskDAO extends Phobject
    * @task   load
    */
   public function loadFromArray(array $row) {
-    static $valid_properties = array();
+    $valid_map = $this->getLiskMetadata('validMap', array());
 
     $map = array();
+    $updated = false;
     foreach ($row as $k => $v) {
       // We permit (but ignore) extra properties in the array because a
       // common approach to building the array is to issue a raw SELECT query
@@ -594,14 +598,15 @@ abstract class LiskDAO extends Phobject
       // path (assigning an invalid property which we've already seen) costs
       // an empty() plus an isset().
 
-      if (empty($valid_properties[$k])) {
-        if (isset($valid_properties[$k])) {
+      if (empty($valid_map[$k])) {
+        if (isset($valid_map[$k])) {
           // The value is set but empty, which means it's false, so we've
           // already determined it's not valid. We don't need to check again.
           continue;
         }
-        $valid_properties[$k] = $this->hasProperty($k);
-        if (!$valid_properties[$k]) {
+        $valid_map[$k] = $this->hasProperty($k);
+        $updated = true;
+        if (!$valid_map[$k]) {
           continue;
         }
       }
@@ -609,6 +614,10 @@ abstract class LiskDAO extends Phobject
       $map[$k] = $v;
     }
 
+    if ($updated) {
+      $this->setLiskMetadata('validMap', $valid_map);
+    }
+
     $this->willReadData($map);
 
     foreach ($map as $prop => $value) {
@@ -686,10 +695,7 @@ abstract class LiskDAO extends Phobject
    * @task   save
    */
   public function setID($id) {
-    static $id_key = null;
-    if ($id_key === null) {
-      $id_key = $this->getIDKeyForUse();
-    }
+    $id_key = $this->getIDKey();
     $this->$id_key = $id;
     return $this;
   }
@@ -704,10 +710,7 @@ abstract class LiskDAO extends Phobject
    * @task   info
    */
   public function getID() {
-    static $id_key = null;
-    if ($id_key === null) {
-      $id_key = $this->getIDKeyForUse();
-    }
+    $id_key = $this->getIDKey();
     return $this->$id_key;
   }
 
@@ -742,9 +745,10 @@ abstract class LiskDAO extends Phobject
    * @task   info
    */
   protected function getAllLiskProperties() {
-    static $properties = null;
-    if (!isset($properties)) {
-      $class = new ReflectionClass(get_class($this));
+    $properties = $this->getLiskMetadata('properties');
+
+    if ($properties === null) {
+      $class = new ReflectionClass(static::class);
       $properties = array();
       foreach ($class->getProperties(ReflectionProperty::IS_PROTECTED) as $p) {
         $properties[strtolower($p->getName())] = $p->getName();
@@ -763,7 +767,10 @@ abstract class LiskDAO extends Phobject
       if ($id_key != 'phid' && !$this->getConfigOption(self::CONFIG_AUX_PHID)) {
         unset($properties['phid']);
       }
+
+      $this->setLiskMetadata('properties', $properties);
     }
+
     return $properties;
   }
 
@@ -777,10 +784,7 @@ abstract class LiskDAO extends Phobject
    * @task   info
    */
   protected function checkProperty($property) {
-    static $properties = null;
-    if ($properties === null) {
-      $properties = $this->getAllLiskProperties();
-    }
+    $properties = $this->getAllLiskProperties();
 
     $property = strtolower($property);
     if (empty($properties[$property])) {
@@ -996,7 +1000,7 @@ abstract class LiskDAO extends Phobject
       'UPDATE %R SET %LQ WHERE %C = '.(is_int($id) ? '%d' : '%s'),
       $this,
       $map,
-      $this->getIDKeyForUse(),
+      $this->getIDKey(),
       $id);
     // We can't detect a missing object because updating an object without
     // changing any values doesn't affect rows. We could jiggle timestamps
@@ -1023,7 +1027,7 @@ abstract class LiskDAO extends Phobject
     $conn->query(
       'DELETE FROM %R WHERE %C = %d',
       $this,
-      $this->getIDKeyForUse(),
+      $this->getIDKey(),
       $this->getID());
 
     $this->didDelete();
@@ -1051,7 +1055,7 @@ abstract class LiskDAO extends Phobject
         // If we are using autoincrement IDs, let MySQL assign the value for the
         // ID column, if it is empty. If the caller has explicitly provided a
         // value, use it.
-        $id_key = $this->getIDKeyForUse();
+        $id_key = $this->getIDKey();
         if (empty($data[$id_key])) {
           unset($data[$id_key]);
         }
@@ -1059,7 +1063,7 @@ abstract class LiskDAO extends Phobject
       case self::IDS_COUNTER:
         // If we are using counter IDs, assign a new ID if we don't already have
         // one.
-        $id_key = $this->getIDKeyForUse();
+        $id_key = $this->getIDKey();
         if (empty($data[$id_key])) {
           $counter_name = $this->getTableName();
           $id = self::loadNextCounterValue($conn, $counter_name);
@@ -1175,19 +1179,6 @@ abstract class LiskDAO extends Phobject
     return 'id';
   }
 
-
-  protected function getIDKeyForUse() {
-    $id_key = $this->getIDKey();
-    if (!$id_key) {
-      throw new Exception(
-        pht(
-          'This DAO does not have a single-part primary key. The method you '.
-          'called requires a single-part primary key.'));
-    }
-    return $id_key;
-  }
-
-
   /**
    * Generate a new PHID, used by CONFIG_AUX_PHID.
    *
@@ -1592,22 +1583,12 @@ abstract class LiskDAO extends Phobject
    * @task   util
    */
   public function __call($method, $args) {
-    // NOTE: PHP has a bug that static variables defined in __call() are shared
-    // across all children classes. Call a different method to work around this
-    // bug.
-    return $this->call($method, $args);
-  }
+    $dispatch_map = $this->getLiskMetadata('dispatchMap', array());
 
-  /**
-   * @task   util
-   */
-  final protected function call($method, $args) {
     // NOTE: This method is very performance-sensitive (many thousands of calls
     // per page on some pages), and thus has some silliness in the name of
     // optimizations.
 
-    static $dispatch_map = array();
-
     if ($method[0] === 'g') {
       if (isset($dispatch_map[$method])) {
         $property = $dispatch_map[$method];
@@ -1620,6 +1601,7 @@ abstract class LiskDAO extends Phobject
           throw new Exception(pht('Bad getter call: %s', $method));
         }
         $dispatch_map[$method] = $property;
+        $this->setLiskMetadata('dispatchMap', $dispatch_map);
       }
 
       return $this->readField($property);
@@ -1632,12 +1614,14 @@ abstract class LiskDAO extends Phobject
         if (substr($method, 0, 3) !== 'set') {
           throw new Exception(pht("Unable to resolve method '%s'!", $method));
         }
+
         $property = substr($method, 3);
         $property = $this->checkProperty($property);
         if (!$property) {
           throw new Exception(pht('Bad setter call: %s', $method));
         }
         $dispatch_map[$method] = $property;
+        $this->setLiskMetadata('dispatchMap', $dispatch_map);
       }
 
       $this->writeField($property, $args[0]);
@@ -1909,4 +1893,20 @@ abstract class LiskDAO extends Phobject
   }
 
 
+  private function getLiskMetadata($key, $default = null) {
+    if (isset(self::$liskMetadata[static::class][$key])) {
+      return self::$liskMetadata[static::class][$key];
+    }
+
+    if (!isset(self::$liskMetadata[static::class])) {
+      self::$liskMetadata[static::class] = array();
+    }
+
+    return idx(self::$liskMetadata[static::class], $key, $default);
+  }
+
+  private function setLiskMetadata($key, $value) {
+    self::$liskMetadata[static::class][$key] = $value;
+  }
+
 }

src/infrastructure/util/PhabricatorHash.php

@@ -224,7 +224,7 @@ final class PhabricatorHash extends Phobject {
     $cache_key = "hmac.key({$hmac_name})";
 
     $hmac_key = $cache->getKey($cache_key);
-    if (!strlen($hmac_key)) {
+    if (($hmac_key === null) || !strlen($hmac_key)) {
       $hmac_key = self::readHMACKey($hmac_name);
 
       if ($hmac_key === null) {

src/infrastructure/util/PhabricatorMetronome.php

@@ -49,7 +49,7 @@ final class PhabricatorMetronome
   }
 
   public function setOffsetFromSeed($seed) {
-    $offset = PhabricatorHash::digestToRange($seed, 0, PHP_INT_MAX);
+    $offset = PhabricatorHash::digestToRange($seed, 0, 0x7FFFFFFF);
     return $this->setOffset($offset);
   }