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Refactor UPX patching logic for phpmicro binary

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crazywhalecc
2026-07-09 16:52:39 +08:00
parent e99423c7d1
commit 4d6f334cbb
1 changed files with 38 additions and 10 deletions
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48
src/Package/Target/php/unix.php
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@@ -289,16 +289,7 @@ trait unix
$builder->deployBinary($package->getSourceDir() . '/sapi/micro/micro.sfx', $dst);
// patch after UPX-ed micro.sfx (Linux only)
if (SystemTarget::getTargetOS() === 'Linux' && $builder->getOption('with-upx-pack')) {
// cut binary with readelf to remove UPX extra segment
[$ret, $out] = shell()->execWithResult("readelf -l {$dst} | awk '/LOAD|GNU_STACK/ {getline; print \\$1, \\$2, \\$3, \\$4, \\$6, \\$7}'");
$out[1] = explode(' ', $out[1]);
$offset = $out[1][0];
if ($ret !== 0 || !str_starts_with($offset, '0x')) {
throw new PatchException('phpmicro UPX patcher', 'Cannot find offset in readelf output');
}
$offset = hexdec($offset);
// remove upx extra wastes
file_put_contents($dst, substr(file_get_contents($dst), 0, $offset));
self::patchMicroUpxPackedBinary($dst);
}
$package->setOutput('Binary path for micro SAPI', $dst);
}
@@ -680,6 +671,43 @@ trait unix
return $php;
}
/**
* Remove the extra segment appended by UPX when packing phpmicro.
*/
private static function patchMicroUpxPackedBinary(string $binaryPath): void
{
[$ret, $out] = shell()->execWithResult('readelf -W -l ' . escapeshellarg($binaryPath));
if ($ret !== 0) {
throw new PatchException('phpmicro UPX patcher', 'Cannot find offset in readelf output');
}
$fileSizes = [];
foreach ($out as $index => $line) {
$line = trim($line);
if (!preg_match('/^(LOAD|GNU_STACK)\s+/', $line)) {
continue;
}
$columns = preg_split('/\s+/', $line);
if (isset($columns[4]) && preg_match('/^0x[[:xdigit:]]+$/', $columns[4]) === 1) {
$fileSizes[] = $columns[4];
continue;
}
$next = $out[$index + 1] ?? '';
if (preg_match('/^\s*(0x[[:xdigit:]]+)\s+0x[[:xdigit:]]+/', $next, $matches)) {
$fileSizes[] = $matches[1];
}
}
$offset = $fileSizes[1] ?? null;
if ($offset === null) {
throw new PatchException('phpmicro UPX patcher', 'Cannot find offset in readelf output');
}
file_put_contents($binaryPath, substr(file_get_contents($binaryPath), 0, intval(hexdec($offset))));
}
/**
* Rename libphp.so to libphp-<release>.so if -release is set in LDFLAGS.
*/