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Common: adds zlib helpers

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This commit is contained in:
Carter Li
2026-10-06 01:10:01 +08:00
parent 2bcd49c106
commit fb89af3d84
6 changed files with 219 additions and 38 deletions
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src/common/android/dex.c
+9 -9
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@@ -9,8 +9,7 @@
#include <sys/stat.h>
#ifdef FF_HAVE_ZLIB
#include "common/library.h"
#include <zlib.h>
#include "common/zlib.h"
#endif
// Offsets into the dex header, from https://source.android.com/docs/core/runtime/dex-format.
@@ -543,10 +542,11 @@ static const uint8_t* findDexMagic(const uint8_t* jar, size_t jarSize, size_t* d
#ifdef FF_HAVE_ZLIB
static const char* inflateDex(const uint8_t* data, size_t dataSize, uint32_t uncompressedSize, uint8_t** out) {
FF_LIBRARY_LOAD(zlib, "dlopen(libz) failed", "libz" FF_LIBRARY_EXTENSION, 2)
FF_LIBRARY_LOAD_SYMBOL(zlib, inflateInit2_, "dlsym(inflateInit2_) failed")
FF_LIBRARY_LOAD_SYMBOL(zlib, inflate, "dlsym(inflate) failed")
FF_LIBRARY_LOAD_SYMBOL(zlib, inflateEnd, "dlsym(inflateEnd) failed")
const char* error = ffZlibLoad(FF_ZLIB_INFLATE);
if (error != nullptr) {
FF_DEBUG("The dex cannot be inflated: %s", error);
return error;
}
// Released by the cleanup on every path out below; ownership moves to the caller by clearing
// the pointer, which is also why no failure path has to free it by hand.
@@ -565,13 +565,13 @@ static const char* inflateDex(const uint8_t* data, size_t dataSize, uint32_t unc
stream.next_out = buffer;
stream.avail_out = (uInt) uncompressedSize;
const int initStatus = ffinflateInit2_(&stream, -MAX_WBITS, ZLIB_VERSION, (int) sizeof(z_stream));
const int initStatus = inflateInit2(&stream, -MAX_WBITS);
if (initStatus != Z_OK) {
FF_DEBUG("inflateInit2() failed: zlib status %d", initStatus);
return "inflateInit2 failed";
}
const int status = ffinflate(&stream, Z_FINISH);
ffinflateEnd(&stream);
const int status = inflate(&stream, Z_FINISH);
inflateEnd(&stream);
if (status != Z_STREAM_END || stream.total_out != (uLong) uncompressedSize) {
FF_DEBUG("inflate() returned %d, produced %lu of %u bytes",
status, stream.total_out, uncompressedSize);