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feat: delete

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This commit is contained in:
hashbro
2026-09-01 06:16:49 +08:00
parent 35fe93e42d
commit 4ece122625
3 changed files with 142 additions and 6 deletions
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app/Services/CorunaArchive.php
+94 -4
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@@ -67,20 +67,110 @@ class CorunaArchive
return $repaired;
}
/**
* Patch an on-disk archive header without loading the file body.
*/
private function patchCorunaHeaderFile(string $path): void
{
$size = filesize($path);
if (! is_int($size) || $size < 32) {
return;
}
$fh = fopen($path, 'r+b');
if (! is_resource($fh)) {
return;
}
try {
$head = fread($fh, 32);
if (! is_string($head) || strlen($head) < 32 || str_starts_with($head, self::STANDARD_PREFIX)) {
return;
}
if (! $this->isCorunaHeader($head)) {
return;
}
$nextHeaderOffset = unpack('P', substr($head, 0, 8))[1] ^ self::HEADER_XOR;
$nextHeaderSize = unpack('P', substr($head, 8, 8))[1] ^ self::HEADER_XOR;
$nextHeaderStart = 32 + $nextHeaderOffset;
if ($nextHeaderSize <= 0 || $nextHeaderSize > 8_000_000
|| $nextHeaderStart + $nextHeaderSize > $size) {
return;
}
if (fseek($fh, $nextHeaderStart) !== 0) {
return;
}
$nextHeader = fread($fh, (int) $nextHeaderSize);
if (! is_string($nextHeader) || strlen($nextHeader) !== (int) $nextHeaderSize) {
return;
}
$patched = substr_replace($head, self::STANDARD_PREFIX."\x00\x04", 0, 8);
$patched = substr_replace($patched, pack('P', $nextHeaderOffset), 12, 8);
$patched = substr_replace($patched, pack('P', $nextHeaderSize), 20, 8);
$nextCrc = crc32($nextHeader) & 0xFFFFFFFF;
$patched = substr_replace($patched, pack('V', $nextCrc), 28, 4);
$startCrc = crc32(substr($patched, 12, 20)) & 0xFFFFFFFF;
$patched = substr_replace($patched, pack('V', $startCrc), 8, 4);
if (fseek($fh, 0) !== 0) {
return;
}
fwrite($fh, $patched);
} finally {
fclose($fh);
}
}
public function extract(string $wireData, string $destDir, string $batchBase = '0'): array
{
if (! is_dir($destDir)) {
mkdir($destDir, 0755, true);
}
$archive = $destDir.'/capture.7z';
file_put_contents($archive, $wireData);
try {
$repaired = $this->repairHeader($wireData);
} catch (\Throwable $e) {
$repaired = $wireData;
$this->patchCorunaHeaderFile($archive);
} catch (\Throwable) {
}
return $this->runSevenZip($archive, $destDir, $batchBase);
}
/**
* Extract from a path without loading the whole archive into PHP.
*/
public function extractPath(string $srcPath, string $destDir, string $batchBase = '0'): array
{
if (! is_file($srcPath)) {
throw new RuntimeException('archive missing');
}
if (! is_dir($destDir)) {
mkdir($destDir, 0755, true);
}
$archive = $destDir.'/capture.7z';
file_put_contents($archive, $repaired);
$in = fopen($srcPath, 'rb');
$out = fopen($archive, 'wb');
if (! is_resource($in) || ! is_resource($out)) {
throw new RuntimeException('cannot copy archive');
}
try {
stream_copy_to_stream($in, $out);
} finally {
fclose($in);
fclose($out);
}
try {
$this->patchCorunaHeaderFile($archive);
} catch (\Throwable) {
}
return $this->runSevenZip($archive, $destDir, $batchBase);
}
/**
* @return array{ok: bool, stderr: string, files: list<string>, password_recipe: string}
*/
private function runSevenZip(string $archive, string $destDir, string $batchBase): array
{
$password = $this->crypto->archivePassword($batchBase);
$membersDir = $destDir.'/members';
@mkdir($membersDir, 0755, true);