91 lines
2.5 KiB
PHP
91 lines
2.5 KiB
PHP
<?php
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namespace App\Classes\FTN\Packet;
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use Illuminate\Support\Arr;
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use App\Classes\FTN\Packet;
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use App\Models\Setup;
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/**
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* FSC-0045 http://ftsc.org/docs/fsc-0045.001
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*
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* Commonly known as Type 2.2 packets
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* Supports 5D addressing
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*/
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final class FSC45 extends Packet
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{
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protected const HEADER = [
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'onode' => [0x00,'v',2], // Orig Node
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'dnode' => [0x02,'v',2], // Dest Node
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'opoint' => [0x04,'v',2], // Orig Point
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'dpoint' => [0x06,'v',2], // Dest Point
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'reserved' => [0x08,'a8',8], // Reserved
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'subver' => [0x10,'v',2], // Sub Version (should be 2)
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'type' => [0x12,'v',2], // Packet Version (should be 2)
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'onet' => [0x14,'v',2], // Orig Net
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'dnet' => [0x16,'v',2], // Dest Net
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'prodcode' => [0x18,'C',1], // Product Code
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'prodrev-maj' => [0x19,'C',1], // Product Version
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'password' => [0x1a,'a8',8], // Packet Password
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'ozone' => [0x22,'v',2], // Orig Zone
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'dzone' => [0x24,'v',2], // Dest Zone
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'odomain' => [0x26,'a8',8], // Orig Domain
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'ddomain' => [0x2e,'a8',8], // Dest Domain
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'proddata' => [0x36,'a4',4], // ProdData
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];
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public const TYPE = '2.2';
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/**
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* Create our message packet header
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*/
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protected function header(): string
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{
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try {
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return pack(collect(self::HEADER)->pluck(1)->join(''),
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$this->ff, // Orig Node
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$this->tf, // Dest Node
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$this->fp, // Orig Point
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$this->tp, // Dest Point
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'', // Reserved
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2, // Sub Version (should be 2)
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2, // Packet Version (should be 2)
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$this->fn, // Orig Net
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$this->tn, // Dest Net
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(Setup::PRODUCT_ID & 0xff), // Product Code
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Setup::PRODUCT_VERSION_MAJ, // Product Version
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$this->password, // Packet Password
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$this->fz, // Orig Zone
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$this->tz, // Dest Zone
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$this->fd, // Orig Domain
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$this->td, // Dest Domain
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strtoupper(hexstr(Setup::PRODUCT_ID)), // ProdData
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);
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} catch (\Exception $e) {
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return $e->getMessage();
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}
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}
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/**
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* Determine if this is a fsc-0045 packet
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*
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* @param string $header
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* @return bool
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* @throws \Exception
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*/
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public static function is_type(string $header): bool
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{
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$head = unpack(self::unpackheader(self::HEADER),$header);
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return (
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(Arr::get($head,'type') === 2)
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&& ((Arr::get($head,'opoint') === 0) || (Arr::get($head,'onet') !== 0xffff))
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&& (strlen(rtrim(Arr::get($head,'reserved'),"\x00")) === 0)
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&& (Arr::get($head,'subver') === 2)
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&& (Arr::get($head,'odomain'))
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&& (Arr::get($head,'ddomain'))
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);
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}
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} |