Auth Db: add add_user method ad CLI command

src/Auth/Db.php

@@ -3,6 +3,7 @@
 namespace EesyPHP\Auth;
 
 use EesyPHP\App;
+use EesyPHP\Cli;
 use EesyPHP\Log;
 
 use Exception;
@@ -52,6 +53,7 @@ class Db extends Backend {
         'users_table' => 'users',
         'username_field' => 'username',
         'password_field' => 'password',
+        'password_hash_algo' => 'default',
         'exposed_fields' => array('name', 'mail'),
       )
     );
@@ -67,6 +69,9 @@ class Db extends Backend {
     self :: $username_field = App::get('auth.db.username_field', null, 'string');
     self :: $password_field = App::get('auth.db.password_field', null, 'string');
     self :: $exposed_fields = App::get('auth.db.exposed_fields', null, 'array');
+
+    if (App :: get('cli.enabled'))
+      Cli :: add_command('add_user', ['\\EesyPHP\\Auth\\Db', 'cli_add_user'], 'Add user');
     return true;
   }
 
@@ -86,13 +91,11 @@ class Db extends Backend {
   public static function get_user($username) {
     self :: connect();
     try {
-      $query = self :: $class :: $fpdo -> from(self :: $users_table)
-        -> select(null)
-        -> select(self :: $exposed_fields)
-        -> where(self :: $username_field, $username);
-
-      $result = $query -> execute();
-      $info = $result -> fetch();
+      $info = self :: $class :: get_one(
+        self :: $users_table,
+        [self :: $username_field => $username],
+        self :: $exposed_fields
+      );
       if ($info === false)
         return null;
       return new User($username, '\\EesyPHP\\Auth\\Db', $info);
@@ -112,20 +115,78 @@ class Db extends Backend {
   public static function check_password($user, $password) {
     self :: connect();
     try {
-      $query = self :: $class :: $fpdo -> from(self :: $users_table)
-        -> select(null)
-        -> select(self :: $password_field)
-        -> where(self :: $username_field, $user->username);
-
-      $result = $query -> execute();
-      $info = $result -> fetch();
+      $info = self :: $class :: get_one(
+        self :: $users_table,
+        [self :: $username_field => $user->username],
+        [self :: $password_field]
+      );
       if ($info === false)
         return false;
-      return password_verify($password, $info['password']);
+      return password_verify($password, $info[self :: $password_field]);
     }
     catch (Exception $e) {
       Log :: error("Error retrieving user %s password from database: %s", $user, $e->getMessage());
     }
     return false;
   }
+
+  /**
+   * Add user in database
+   * @param array $info  User info with at least username, password (clear) and all required exposed
+   *                     fields
+   * @return bool
+   */
+  public static function add_user($info) {
+    $values = [
+      App::get('auth.db.username_field') => $info['username'],
+      App::get('auth.db.password_field') => password_hash(
+        $info['password'],
+        constant('PASSWORD_'.strtoupper(App::get('auth.db.password_hash_algo')))
+      ),
+    ];
+    foreach($info as $field => $value) {
+      if (!$value) {
+        Log :: error("add_user: field %s is missing", $field);
+        return false;
+      }
+    }
+    foreach(App :: get('auth.db.exposed_fields') as $field)
+      if (isset($info[$field]) && $info[$field])
+        $values[$field] = $info[$field];
+
+    if (self :: $class :: insert(self :: $users_table, $values)) {
+      Log :: info('add_user(%s): user added', $values['username']);
+      return true;
+    }
+    Log :: error('add_user(%s): error adding user', $values['username']);
+    return false;
+  }
+
+  /**
+   * CLI command to add user
+   * @param array $command_args  Command arguments
+   * @return bool
+   */
+  public static function cli_add_user($command_args) {
+    $info = ['username' => null, 'password' => null];
+    foreach($info as $field => $value) {
+      while(!$value) {
+        $value = Cli::ask_user("Please enter user $field: ", $field == 'password');
+        if (empty($value))
+          print("Invalid value\n");
+      }
+      $info[$field] = $value;
+    }
+    foreach(self :: $exposed_fields as $field) {
+      $value = readline("Please enter user $field: ");
+      if (empty($value))
+          continue;
+      $info[$field] = $value;
+    }
+    if (self :: add_user($info)) {
+      printf("User %s added\n", $info['username']);
+      return true;
+    }
+    Log :: fatal("Error occurred adding user %s", $info['username']);
+  }
 }

src/Cli.php

@@ -444,4 +444,28 @@ Additional parameters:
     exit(1);
   }
 
+  /**
+   * Helper method to ask user to enter value from STDIN
+   * @param string  $prompt      Prompt message
+   * @param boolean $password    Set to true if you ask for a password (value not displayed)
+   * @param array  $extra_args   Extra arguments used to compute prompt message
+   * @return string  User input
+   */
+  public static function ask_user($prompt, $password=false, ...$extra_args) {
+    if ($extra_args)
+      $prompt = call_user_func_array(
+        'sprintf',
+        array_merge(array($prompt), $extra_args)
+      );
+    if ($password) {
+      print($prompt);
+      system('stty -echo');
+      $password = trim(fgets(STDIN));
+      system('stty echo');
+      print("\n");
+      return $password;
+    }
+    return readline($prompt);
+  }
+
 }