2012-02-06 00:09:21 +01:00
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<?php
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class Dao_Users
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extends DAO
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{
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private function hashPassword( $password , $salt , $iterations )
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{
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$hash = $password;
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$salt = trim( $salt );
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do {
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$hash = sha1( "$salt$hash$salt" );
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$iterations --;
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} while ( $iterations > 0 );
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return $hash;
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}
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public function getUsers( )
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{
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return $this->query( 'SELECT user_id , user_email FROM users ORDER BY LOWER( user_email )' )->execute( );
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}
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public function getUser( $email )
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{
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$query = $this->query( 'SELECT * FROM users WHERE user_email = LOWER( $1 )' );
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$results = $query->execute( $email );
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if ( empty( $results ) ) {
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return null;
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}
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return array_shift( $results );
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}
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public function checkLogin( $email , $password )
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{
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$userData = $this->getUser( $email );
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if ( $userData != null ) {
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$hashed = $this->hashPassword( $password ,
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$userData->user_salt ,
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$userData->user_iterations );
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if ( $hashed === $userData->user_hash ) {
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return $userData;
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}
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}
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return null;
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}
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public function addUser( $email , $password )
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{
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$iterations = rand( 130 , 160 );
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$randSource = array( );
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for ( $i = 0 ; $i < 26 ; $i ++ ) {
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array_push( $randSource , chr( $i + ord( 'a' ) ) );
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array_push( $randSource , chr( $i + ord( 'A' ) ) );
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if ( $i < 10 ) {
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array_push( $randSource , chr( $i + 48 ) );
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}
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}
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shuffle( $randSource );
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$salt = join( '' , array_splice( $randSource , 0 , 4 ) );
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$hash = $this->hashPassword( $password , $salt , $iterations );
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$result = $this->query( 'SELECT users_add( $1 , $2 , $3 , $4 ) AS error' )
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->execute( $email , $salt , $iterations , $hash );
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return $result[ 0 ]->error;
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}
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public function hasUsers( )
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{
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$result = $this->query( 'SELECT COUNT(*) AS n_users FROM users' )->execute( );
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2012-02-06 00:28:07 +01:00
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return $result[0]->n_users > 0;
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2012-02-06 00:09:21 +01:00
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}
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}
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