Merge commit 'ee861bc6cf7ccec4a056443488e7b0860b8b0606' as 'external/unarr'

2024-09-14 16:23:23 +02:00
parent a4a3a55681 ee861bc6cf
commit 557ef2042a
99 changed files with 20941 additions and 0 deletions
--- a/external/unarr/zip/zip.h
+++ b/external/unarr/zip/zip.h
@@ -0,0 +1,173 @@
+/* Copyright 2015 the unarr project authors (see AUTHORS file).
+   License: LGPLv3 */
+
+#ifndef zip_zip_h
+#define zip_zip_h
+
+#include "../common/unarr-imp.h"
+
+#ifdef HAVE_ZLIB
+#include <zlib.h>
+#endif
+#include "inflate.h"
+#ifdef HAVE_BZIP2
+#include <bzlib.h>
+#endif
+#ifdef HAVE_LIBLZMA
+#include <lzma.h>
+#else
+#include "../lzmasdk/LzmaDec.h"
+#endif
+#include "../lzmasdk/Ppmd8.h"
+
+typedef struct ar_archive_zip_s ar_archive_zip;
+
+/***** parse-zip *****/
+
+enum zip_signatures {
+    SIG_LOCAL_FILE_HEADER = 0x04034B50,
+    SIG_CENTRAL_DIRECTORY = 0x02014B50,
+    SIG_END_OF_CENTRAL_DIRECTORY_64 = 0x06064B50,
+    SIG_END_OF_CENTRAL_DIRECTORY_64_LOCATOR = 0x07064B50,
+    SIG_END_OF_CENTRAL_DIRECTORY = 0x06054B50,
+};
+
+enum compression_method {
+    METHOD_STORE = 0, METHOD_DEFLATE = 8,
+    METHOD_DEFLATE64 = 9, METHOD_BZIP2 = 12, METHOD_LZMA = 14,
+    METHOD_XZ = 95, METHOD_PPMD = 98,
+};
+
+#define ZIP_LOCAL_ENTRY_FIXED_SIZE 30
+#define ZIP_DIR_ENTRY_FIXED_SIZE 46
+#define ZIP_END_OF_CENTRAL_DIR_SIZE 22
+
+struct zip_entry {
+    uint32_t signature;
+    uint16_t version;
+    uint16_t min_version;
+    uint16_t flags;
+    uint16_t method;
+    uint32_t dosdate;
+    uint32_t crc;
+    uint64_t datasize;
+    uint64_t uncompressed;
+    uint16_t namelen;
+    uint16_t extralen;
+    uint16_t commentlen;
+    uint32_t disk;
+    uint16_t attr_internal;
+    uint32_t attr_external;
+    off64_t header_offset;
+};
+
+struct zip_eocd64 {
+    uint32_t signature;
+    uint16_t version;
+    uint16_t min_version;
+    uint32_t diskno;
+    uint32_t diskno_dir;
+    uint64_t numentries_disk;
+    uint64_t numentries;
+    uint64_t dir_size;
+    off64_t dir_offset;
+    uint16_t commentlen;
+};
+
+struct ar_archive_zip_entry {
+    off64_t offset;
+    uint16_t method;
+    uint16_t flags;
+    uint32_t crc;
+    char *name;
+    char *raw_name;
+    uint32_t dosdate;
+};
+
+bool zip_seek_to_compressed_data(ar_archive_zip *zip);
+bool zip_parse_local_file_entry(ar_archive_zip *zip, struct zip_entry *entry);
+off64_t zip_find_next_local_file_entry(ar_stream *stream, off64_t offset);
+bool zip_parse_directory_entry(ar_archive_zip *zip, struct zip_entry *entry);
+off64_t zip_find_end_of_last_directory_entry(ar_stream *stream, struct zip_eocd64 *eocd);
+bool zip_parse_end_of_central_directory(ar_stream *stream, struct zip_eocd64 *eocd);
+off64_t zip_find_end_of_central_directory(ar_stream *stream);
+const char *zip_get_name(ar_archive *ar, bool raw);
+
+/***** uncompress-zip *****/
+
+struct ar_archive_zip_uncomp;
+
+typedef uint32_t (* zip_uncomp_uncompress_data_fn)(struct ar_archive_zip_uncomp *uncomp, void *buffer, uint32_t buffer_size, bool is_last_chunk);
+typedef void (* zip_uncomp_clear_state_fn)(struct ar_archive_zip_uncomp *uncomp);
+
+struct InputBuffer {
+    uint8_t data[4096];
+    uint16_t offset;
+    uint16_t bytes_left;
+    bool at_eof;
+};
+
+struct ByteReader {
+    IByteIn super;
+    struct InputBuffer *input;
+    ar_archive_zip *zip;
+};
+
+struct ar_archive_zip_uncomp {
+    bool initialized;
+    zip_uncomp_uncompress_data_fn uncompress_data;
+    zip_uncomp_clear_state_fn clear_state;
+    union {
+#ifdef HAVE_ZLIB
+        z_stream zstream;
+#endif
+        inflate_state *inflate;
+#ifdef HAVE_BZIP2
+        bz_stream bstream;
+#endif
+#ifdef HAVE_LIBLZMA
+        lzma_stream lzmastream;
+#else
+        struct {
+            CLzmaDec dec;
+            ELzmaFinishMode finish;
+            ISzAlloc alloc;
+        } lzma;
+#endif //HAVE_LIBLZMA
+        struct {
+            CPpmd8 ctx;
+            struct ByteReader bytein;
+            ISzAlloc alloc;
+        } ppmd8;
+    } state;
+    struct InputBuffer input;
+};
+
+bool zip_uncompress_part(ar_archive_zip *zip, void *buffer, size_t buffer_size);
+void zip_clear_uncompress(struct ar_archive_zip_uncomp *uncomp);
+
+/***** zip *****/
+
+struct ar_archive_zip_dir {
+    /* off64_t offset; // use ar_archive::entry_offset_first */
+    off64_t end_offset;
+};
+
+struct ar_archive_zip_progress {
+    size_t data_left;
+    size_t bytes_done;
+    uint32_t crc;
+};
+
+struct ar_archive_zip_s {
+    ar_archive super;
+    struct ar_archive_zip_dir dir;
+    struct ar_archive_zip_entry entry;
+    struct ar_archive_zip_uncomp uncomp;
+    struct ar_archive_zip_progress progress;
+    bool deflatedonly;
+    off64_t comment_offset;
+    uint16_t comment_size;
+};
+
+#endif