98 lines
1.2 KiB
PHP
98 lines
1.2 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 verify_code(string $code)
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{
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$type = intval($code[5]);
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$checkBit = 0;
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$checkBitPos = 0;
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switch($type)
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{
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case 0:
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case 1:
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$checkBitPos = 7;
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break;
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case 2:
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case 3:
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$checkBitPos = 7;
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break;
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case 4:
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case 5:
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$checkBitPos = 4;
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break;
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case 6:
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case 7:
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$checkBitPos = 11;
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break;
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case 8:
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case 9:
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$checkBitPos = 1;
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break;
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}
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$checkBit = intval($code[$checkBitPos]);
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$calcBit = check($code,$checkBitPos);
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if($checkBit == $calcBit)
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{
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return true;
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}
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else
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{
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return false;
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}
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}
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function fail()
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{
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print("mch=00");
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exit();
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}
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//main process
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header("Content-Type: www-form-urlencoded");
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session_start();
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if(!isset($_POST["tapa"]))
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{
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fail();
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}
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$loginCode = $_POST["tapa"];
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if(strlen($loginCode) != 14)
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{
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fail();
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}
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$_SESSION["loginCode"] = $loginCode;
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$isValid = verify_code($loginCode);
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if($isValid)
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{
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print("mch=01&wrk=21&par=50&acd=6&npa=72&mde=1&xda=81&dte=68721579380456");
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}
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else
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{
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fail();
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}
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?>
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