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.
123 lines
3.9 KiB
PHP
123 lines
3.9 KiB
PHP
<?php
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declare(strict_types=1);
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echo "=== Exact Encoding Structure ===\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
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for ($i = 0; $i < 11; $i++) {
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$byte = ord($testData[$i]);
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$bits .= str_pad(decbin($byte), 8, '0', STR_PAD_LEFT);
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}
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echo "After mode + count + data: " . strlen($bits) . " bits\n";
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// Convert to codewords so far
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$codewordsSoFar = [];
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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, $i, 8);
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$codewordsSoFar[] = bindec($byte);
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}
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}
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echo "Codewords so far: " . count($codewordsSoFar) . "\n";
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echo implode(', ', $codewordsSoFar) . "\n\n";
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// Check: mode + count + data should be exactly 100 bits
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// But we need to check if the last byte is complete
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$remainder = strlen($bits) % 8;
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echo "Remainder after data: {$remainder}\n";
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if ($remainder !== 0) {
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echo "⚠️ Data doesn't end at byte boundary! Last {$remainder} bits incomplete.\n";
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} else {
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echo "✅ Data ends at byte boundary.\n";
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}
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// Expected codewords
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$expected = [64, 180, 132, 84, 196, 196, 242, 5, 116, 245, 174, 59, 64, 109, 236, 233];
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// Build expected bit string
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$expectedBits = '';
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foreach ($expected as $cw) {
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$expectedBits .= str_pad(decbin($cw), 8, '0', STR_PAD_LEFT);
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}
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echo "\n=== Comparison ===\n";
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echo "Our bits length: " . strlen($bits) . "\n";
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echo "Expected bits length: " . strlen($expectedBits) . "\n\n";
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// Show first 13 codewords (mode + count + data should be 12 codewords = 96 bits)
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// But we have 100 bits, so that's 12.5 codewords?
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echo "First 12 codewords (96 bits):\n";
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echo "Our: " . substr($bits, 0, 96) . "\n";
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echo "Expected: " . substr($expectedBits, 0, 96) . "\n";
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echo "Match: " . (substr($bits, 0, 96) === substr($expectedBits, 0, 96) ? "✅" : "❌") . "\n\n";
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// Show bits 96-104 (this should be the last 4 bits of data + terminator)
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echo "Bits 96-104 (last 4 data bits + terminator):\n";
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echo "Our: " . substr($bits, 96, 8) . "\n";
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echo "Expected: " . substr($expectedBits, 96, 8) . "\n";
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echo "Match: " . (substr($bits, 96, 8) === substr($expectedBits, 96, 8) ? "✅" : "❌") . "\n\n";
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// The issue: After 100 bits of data, we should have:
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// - 4 bits terminator (making 104 bits total)
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// - Then pad to byte (making 104 bits, which is already a multiple of 8)
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// - Then add pad codewords to reach 128 bits (3 pad codewords = 24 bits)
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echo "Expected structure:\n";
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echo " Bits 0-99: Mode + Count + Data (100 bits)\n";
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echo " Bits 100-103: Terminator (4 bits)\n";
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echo " Bits 104-127: Pad codewords (24 bits = 3 codewords)\n\n";
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echo "Expected bits 100-127:\n";
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echo substr($expectedBits, 100, 28) . "\n";
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echo "This should be: terminator (4 bits) + padding (24 bits)\n\n";
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// Show what our encoding produces
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echo "Our bits 100-127:\n";
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// But we only have 104 bits so far!
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echo "Current length: " . strlen($bits) . " bits\n";
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// Add terminator
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$requiredBits = 128;
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$terminatorLength = min(4, max(0, $requiredBits - strlen($bits)));
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$bits .= str_repeat('0', $terminatorLength);
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echo "After terminator ({$terminatorLength} bits): " . strlen($bits) . " bits\n";
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// Pad to byte
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$remainder = strlen($bits) % 8;
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if ($remainder !== 0) {
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$bits .= str_repeat('0', 8 - $remainder);
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}
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echo "After padding to byte: " . strlen($bits) . " bits\n";
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// Add pad codewords
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$padBytes = ['11101100', '00010001'];
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$padIndex = 0;
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while (strlen($bits) < $requiredBits) {
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$bits .= $padBytes[$padIndex % 2];
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$padIndex++;
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}
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echo "After pad codewords: " . strlen($bits) . " bits\n\n";
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echo "Our bits 100-127:\n";
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echo substr($bits, 100, 28) . "\n";
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echo "Expected bits 100-127:\n";
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echo substr($expectedBits, 100, 28) . "\n";
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echo "Match: " . (substr($bits, 100, 28) === substr($expectedBits, 100, 28) ? "✅" : "❌") . "\n";
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