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feat: add support for AWG2 QR code generation and vpn:// URL configuration

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This commit is contained in:
infosave2007
2026-04-20 19:52:33 +03:00
parent 08e0a3499c
commit c29162ddb9
5 changed files with 221 additions and 17 deletions
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inc/QrUtil.php
+50 -5
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@@ -69,7 +69,7 @@ class QrUtil
}
$uncompressedLen = strlen($json);
$compressedLen = strlen($compressed) + 4; // +4 for the uncompressed length field
$version = 0x07C00100; // Amnezia magic version number
$version = 0x07C00100; // Amnezia magic version number for compressed format
$header = pack('N3', $version, $compressedLen, $uncompressedLen);
return self::urlsafe_b64_encode($header . $compressed);
}
@@ -87,23 +87,68 @@ class QrUtil
return self::encodeOldPayloadFromJson(json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT));
}
/**
* Generate QR code payload in vpn:// URL format for AWG2
* Returns vpn://<base64url(header + compressed config)>
*/
public static function encodeVpnUrlPayload(string $confText, string $protocolSlug = ''): string
{
if ($protocolSlug === 'awg2') {
return self::encodeVpnUrlConf($confText);
}
// For other protocols, use old format with vpn:// prefix
$payload = self::buildOldEnvelopeFromConf($confText, $protocolSlug);
$jsonPayload = json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
return 'vpn://' . self::encodeOldPayloadFromJson($jsonPayload);
}
/**
* Encode config in simple format used by real Amnezia app for AWG2:
* Header (8 bytes): version (4) + length (4) + config text
* No compression, no JSON wrapper
*
* Note: In real app, bytes 8-11 contain first 4 bytes of config text,
* not a separate field. So header is only 8 bytes.
*/
private static function encodeSimpleConf(string $confText): string
{
$version = 0x07C00100; // Amnezia magic version number
$version = 0x07C00200; // Amnezia magic version number (updated for newer app compatibility)
$length = strlen($confText);
$header = pack('N2', $version, $length);
return self::urlsafe_b64_encode($header . $confText);
}
/**
* Encode config in vpn:// URL format used by newer Amnezia app
* Format: vpn://<base64url(header + compressed config)>
* Header: version (4 bytes) + uncompressed length (4 bytes)
* Payload: gzipped config text
*/
private static function encodeVpnUrlConf(string $confText): string
{
// Based on real Amnezia app format - no compression, just header + config
$version = 0x07C00200; // Amnezia magic version number
$length = strlen($confText);
// Header: version (4 bytes big-endian) + length (4 bytes big-endian)
$header = pack('N2', $version, $length);
$payload = $header . $confText;
// Return just the base64url encoded payload (vpn:// prefix added by caller if needed)
return self::urlsafe_b64_encode($payload);
}
/**
* Encode config in old compressed format (for second QR code)
* Uses JSON envelope with gzip compression
* Header: version (4) + compressedLen+4 (4) + uncompressedLen (4) + compressed data
*/
public static function encodeCompressedConf(string $confText, string $protocolSlug = ''): string
{
$payload = self::buildOldEnvelopeFromConf($confText, $protocolSlug);
$jsonPayload = json_encode($payload, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
return self::encodeOldPayloadFromJson($jsonPayload);
}
private static function resolveServerDescription(?string $endpointHost): string
{
$desc = (string) ($endpointHost ?? '');