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< ? php
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header ( 'Access-Control-Allow-Origin: *' );
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// Lettura file di configurazione
$config = parse_ini_file ( '../config.ini' );
// Array per la risposta del web service
$result = [];
switch ( $_POST [ 'op' ] ){
case 'get-last-devices' :
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$oui = file_get_contents ( $config [ 'oui_path' ]);
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if ( ! empty ( $_POST [ 'date_start' ]) && ! empty ( $_POST [ 'date_end' ])) {
// Connessione al database
$mysqli = mysqli_connect ( $config [ 'db_host' ], $config [ 'db_user' ], $config [ 'db_pass' ], $config [ 'db_name' ]);
// Errore nella connessione a database
if ( mysqli_connect_errno ( $mysqli )) {
$result = [
'status' => 'ERR' ,
'message' => mysqli_connect_error (),
];
} else {
// Lettura device fra le date richieste
$sql = " SELECT DISTINCT logs.mac, logs.ssid, logs.dbm, logs_data.received_at, devices.nome FROM logs LEFT JOIN devices ON logs.mac=devices.mac INNER JOIN (SELECT mac, MAX(received_at) AS received_at FROM logs GROUP BY mac) AS logs_data ON logs_data.mac=logs.mac WHERE logs_data.received_at BETWEEN ? AND ? ORDER BY logs_data.received_at DESC " ;
$stmt = $mysqli -> prepare ( $sql );
// Errore nella preparazione query
if ( ! $stmt ) {
$result = [
'status' => 'ERR' ,
'message' => $mysqli -> error ,
];
} else {
if ( $stmt -> bind_param ( 'ss' , $date_start , $date_end )) {
$date_start = $_POST [ 'date_start' ];
$date_end = $_POST [ 'date_end' ];
// Esecuzione statement
$stmt -> execute ();
$rs = $stmt -> get_result ();
while ( $row = $rs -> fetch_assoc ()) {
// Conversione del segnale in percentuale se richiesto
if ( $_POST [ 'signal_type' ] == 'percent' ) {
if ( $row [ 'dbm' ] <= - 100 ) {
$row [ 'dbm' ] = 0 ;
} elseif ( $row [ 'dbm' ] >= - 50 ) {
$row [ 'dbm' ] = 100 ;
} else {
$row [ 'dbm' ] = 2 * ( $row [ 'dbm' ] + 100 );
}
}
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// Lettura vendor
$mac = str_replace ( ':' , '-' , substr ( $row [ 'mac' ], 0 , 8 ) );
$row [ 'vendor' ] = '' ;
if ( preg_match ( '/^' . preg_quote ( $mac ) . '([\s\t]+)\(hex\)(.+?)$/im' , $oui , $m ) ){
$row [ 'vendor' ] = trim ( $m [ 2 ]);
}
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$records [] = $row ;
}
$result = [
'status' => 'OK' ,
'records' => ( array ) $records ,
];
} else {
$result = [
'status' => 'ERR' ,
'message' => 'Errore durante l\'esecuzione query' ,
];
}
}
}
echo json_encode ( $result );
$stmt -> close ();
$mysqli -> close ();
}
break ;
case 'get-online-devices' :
if ( ! empty ( $_POST [ 'date_start' ]) && ! empty ( $_POST [ 'date_end' ])) {
// Connessione al database
$mysqli = mysqli_connect ( $config [ 'db_host' ], $config [ 'db_user' ], $config [ 'db_pass' ], $config [ 'db_name' ]);
// Errore nella connessione a database
if ( mysqli_connect_errno ( $mysqli )) {
$result = [
'status' => 'ERR' ,
'message' => mysqli_connect_error (),
];
} else {
// Lettura numero di device unico nell'intervallo di date
$sql = " SELECT DISTINCT logs.mac FROM logs WHERE received_at BETWEEN ? AND ? " ;
$stmt = $mysqli -> prepare ( $sql );
// Errore nella preparazione query
if ( ! $stmt ) {
$result = [
'status' => 'ERR' ,
'message' => $mysqli -> error ,
];
} else {
if ( $stmt -> bind_param ( 'ss' , $date_start , $date_end )) {
$date_start = $_POST [ 'date_start' ];
$date_end = $_POST [ 'date_end' ];
// Esecuzione statement
$stmt -> execute ();
$rs = $stmt -> get_result ();
while ( $row = $rs -> fetch_assoc ()) {
// Conversione del segnale in percentuale se richiesto
if ( $_POST [ 'signal_type' ] == 'percent' ) {
if ( $row [ 'dbm' ] <= - 100 ) {
$row [ 'dbm' ] = 0 ;
} elseif ( $row [ 'dbm' ] >= - 50 ) {
$row [ 'dbm' ] = 100 ;
} else {
$row [ 'dbm' ] = 2 * ( $row [ 'dbm' ] + 100 );
}
}
$records [] = $row ;
}
$result = [
'status' => 'OK' ,
'records' => sizeof ( $records ),
];
} else {
$result = [
'status' => 'ERR' ,
'message' => 'Errore durante l\'esecuzione query' ,
];
}
}
}
echo json_encode ( $result );
$stmt -> close ();
$mysqli -> close ();
}
break ;
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case 'get-devices-by-hour' :
// Connessione al database
$mysqli = mysqli_connect ( $config [ 'db_host' ], $config [ 'db_user' ], $config [ 'db_pass' ], $config [ 'db_name' ]);
// Errore nella connessione a database
if ( mysqli_connect_errno ( $mysqli )) {
$result = [
'status' => 'ERR' ,
'message' => mysqli_connect_error (),
];
} else {
// Lettura numero di device unico nell'intervallo di date
$sql = "
SELECT
CONCAT ( DATE_FORMAT ( received_at , '%H' ), ':00' ) AS indice ,
COUNT ( DISTINCT ( mac )) AS valore
FROM
`logs`
GROUP BY
DATE_FORMAT ( received_at , '%H' ) " ;
$stmt = $mysqli -> prepare ( $sql );
// Errore nella preparazione query
if ( ! $stmt ) {
$result = [
'status' => 'ERR' ,
'message' => $mysqli -> error ,
];
} else {
// Esecuzione statement
$stmt -> execute ();
$rs = $stmt -> get_result ();
while ( $row = $rs -> fetch_assoc ()) {
$records [] = $row ;
}
$result = [
'status' => 'OK' ,
'records' => $records ,
];
}
}
echo json_encode ( $result );
$stmt -> close ();
$mysqli -> close ();
break ;
case 'get-devices-by-weekday' :
$weekdays = [
0 => 'domenica' ,
1 => 'lunedì' ,
2 => 'martedì' ,
3 => 'mercoledì' ,
4 => 'giovedì' ,
5 => 'venerdì' ,
6 => 'sabato' ,
];
// Connessione al database
$mysqli = mysqli_connect ( $config [ 'db_host' ], $config [ 'db_user' ], $config [ 'db_pass' ], $config [ 'db_name' ]);
// Errore nella connessione a database
if ( mysqli_connect_errno ( $mysqli )) {
$result = [
'status' => 'ERR' ,
'message' => mysqli_connect_error (),
];
} else {
// Lettura numero di device unico nell'intervallo di date
$sql = "
SELECT
DATE_FORMAT ( received_at , '%w' ) AS indice ,
COUNT ( DISTINCT ( mac )) AS valore
FROM
`logs`
GROUP BY
DATE_FORMAT ( received_at , '%w' ) " ;
$stmt = $mysqli -> prepare ( $sql );
// Errore nella preparazione query
if ( ! $stmt ) {
$result = [
'status' => 'ERR' ,
'message' => $mysqli -> error ,
];
} else {
// Esecuzione statement
$stmt -> execute ();
$rs = $stmt -> get_result ();
while ( $row = $rs -> fetch_assoc ()) {
$row [ 'indice' ] = $weekdays [ $row [ 'indice' ] ];
$records [] = $row ;
}
$result = [
'status' => 'OK' ,
'records' => $records ,
];
}
}
echo json_encode ( $result );
$stmt -> close ();
$mysqli -> close ();
break ;
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}