Michael Schiemer
95147ff23e
Remove WireGuard integration from production deployment to simplify infrastructure: - Remove docker-compose-direct-access.yml (VPN-bound services) - Remove VPN-only middlewares from Grafana, Prometheus, Portainer - Remove WireGuard middleware definitions from Traefik - Remove WireGuard IPs (10.8.0.0/24) from Traefik forwarded headers All monitoring services now publicly accessible via subdomains: - grafana.michaelschiemer.de (with Grafana native auth) - prometheus.michaelschiemer.de (with Basic Auth) - portainer.michaelschiemer.de (with Portainer native auth) All services use Let's Encrypt SSL certificates via Traefik.
105 lines
3.6 KiB
PHP
105 lines
3.6 KiB
PHP
<?php
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declare(strict_types=1);
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echo "=== Data Codewords Detail Analysis ===\n\n";
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$testData = 'HELLO WORLD';
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// Build our encoding
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$bits = '';
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// 1. Mode indicator (4 bits) - Byte mode = 0100
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$bits .= '0100';
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// 2. Character count (8 bits)
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$bits .= str_pad(decbin(11), 8, '0', STR_PAD_LEFT);
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// 3. Data bytes - let's check each one
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echo "Data bytes:\n";
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for ($i = 0; $i < 11; $i++) {
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$char = $testData[$i];
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$byte = ord($char);
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$byteBits = str_pad(decbin($byte), 8, '0', STR_PAD_LEFT);
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$bits .= $byteBits;
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echo " '{$char}' (ASCII {$byte}): {$byteBits}\n";
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}
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echo "\nTotal bits: " . strlen($bits) . "\n";
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echo "Bit string: {$bits}\n\n";
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// Convert to codewords
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$codewords = [];
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for ($i = 0; $i < strlen($bits); $i += 8) {
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if ($i + 8 <= strlen($bits)) {
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$byte = substr($bits, $i, 8);
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$codewords[] = bindec($byte);
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echo "Codeword " . count($codewords) . " (bits " . $i . "-" . ($i+7) . "): {$byte} = " . bindec($byte) . "\n";
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} else {
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// Partial byte
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$byte = substr($bits, $i);
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echo "Partial byte (bits " . $i . "-" . (strlen($bits)-1) . "): {$byte}\n";
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}
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}
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// Expected codewords
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$expected = [64, 180, 132, 84, 196, 196, 242, 5, 116, 245, 174, 59, 64, 109, 236, 233];
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echo "\n=== Expected Codewords ===\n";
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$expectedBits = '';
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for ($i = 0; $i < count($expected); $i++) {
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$byteBits = str_pad(decbin($expected[$i]), 8, '0', STR_PAD_LEFT);
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$expectedBits .= $byteBits;
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echo "Codeword " . ($i + 1) . ": {$byteBits} = {$expected[$i]}\n";
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}
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echo "\n=== Comparison ===\n";
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echo "Our bit string (first 100 bits):\n";
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echo substr($bits, 0, 100) . "\n\n";
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echo "Expected bit string (first 100 bits):\n";
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echo substr($expectedBits, 0, 100) . "\n\n";
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// Find first difference
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for ($i = 0; $i < min(strlen($bits), 100); $i++) {
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if ($bits[$i] !== $expectedBits[$i]) {
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$codewordIndex = intval($i / 8);
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$bitInCodeword = $i % 8;
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echo "❌ First difference at bit {$i} (codeword " . ($codewordIndex + 1) . ", bit {$bitInCodeword})\n";
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echo " Our bit: {$bits[$i]}\n";
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echo " Expected: {$expectedBits[$i]}\n";
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// Show codeword context
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$codewordStart = $codewordIndex * 8;
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echo " Codeword " . ($codewordIndex + 1) . ":\n";
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echo " Our: " . substr($bits, $codewordStart, 8) . " = " . (isset($codewords[$codewordIndex]) ? $codewords[$codewordIndex] : 'N/A') . "\n";
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echo " Expected: " . substr($expectedBits, $codewordStart, 8) . " = " . $expected[$codewordIndex] . "\n";
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// Show surrounding context
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echo " Context (bits " . max(0, $codewordStart - 8) . "-" . min(strlen($bits), $codewordStart + 16) . "):\n";
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echo " Our: " . substr($bits, max(0, $codewordStart - 8), min(24, strlen($bits) - max(0, $codewordStart - 8))) . "\n";
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echo " Expected: " . substr($expectedBits, max(0, $codewordStart - 8), min(24, strlen($expectedBits) - max(0, $codewordStart - 8))) . "\n";
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break;
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}
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}
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// Check if our data matches expected data
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echo "\n=== Data Codewords Check ===\n";
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echo "Our first 12 codewords: " . implode(', ', array_slice($codewords, 0, 12)) . "\n";
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echo "Expected first 12 codewords: " . implode(', ', array_slice($expected, 0, 12)) . "\n";
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$match = true;
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for ($i = 0; $i < min(12, count($codewords), count($expected)); $i++) {
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if ($codewords[$i] !== $expected[$i]) {
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$match = false;
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echo "❌ Codeword " . ($i + 1) . " differs: ours={$codewords[$i]}, expected={$expected[$i]}\n";
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}
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}
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if ($match) {
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echo "✅ First 12 codewords match!\n";
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} else {
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echo "❌ Data codewords don't match!\n";
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}
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