105 lines
1.6 KiB
PHP
105 lines
1.6 KiB
PHP
<?php
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function check(string $code, $bitPos)
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{
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$checksum = 0;
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intval($code[5]);
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for($i=0; $i<strlen($code); $i++)
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{
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if($i == $bitPos)
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{
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continue;
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}
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$checksum += intval($code[$i]);
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}
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return $checksum % 10;
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}
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function fail()
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{
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echo("tapa=00000000000000");
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exit();
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}
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header("Content-Type: www-form-urlencoded");
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session_start();
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if(!isset($_SESSION["loginCode"]))
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{
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fail();
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}
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$code = $_SESSION["loginCode"];
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if(isset($_POST["mde"]) and isset($_POST["npa"]))
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{
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$mode = strval($_POST["mde"]);
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$id = strval($_POST["npa"]);
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//input validaition:
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if(strlen($id) > 3)
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{
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fail();
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}
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else if(strlen($mode) > 1)
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{
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fail();
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}
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// processing
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while(strlen($id) < 3)
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{
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$id = "0".$id;
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}
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$type = intval($code[5]);
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switch($type)
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{
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case 0:
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case 1:
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$code[8] = $mode;
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$code[0] = $id[0];
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$code[13] = $id[1];
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$code[11] = $id[3];
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$code[7] = check($code,7);
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break;
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case 2:
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case 3:
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$code[1] = $mode;
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$code[2] = $id[0];
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$code[8] = $id[1];
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$code[13] = $id[2];
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$code[7] = check($code,7);
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break;
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case 4:
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case 5:
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$code[10] = $mode;
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$code[11] = $id[0];
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$code[7] = $id[1];
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$code[3] = $id[2];
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$code[4] = check($code,4);
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break;
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case 6:
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case 7:
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$code[13] = $mode;
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$code[12] = $id[0];
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$code[2] = $id[1];
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$code[1] = $id[2];
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$code[11] = check($code,11);
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break;
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case 8:
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case 9:
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$code[10] = $mode;
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$code[8] = $id[0];
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$code[4] = $id[1];
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$code[2] = $id[2];
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$code[1] = check($code,1);
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break;
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}
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echo("tapa=".$code);
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}
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?>
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