| /* zip.c -- Zip manipulation |
| part of the minizip-ng project |
| |
| Copyright (C) Nathan Moinvaziri |
| https://github.com/zlib-ng/minizip-ng |
| Copyright (C) 2009-2010 Mathias Svensson |
| Modifications for Zip64 support |
| http://result42.com |
| Copyright (C) 2007-2008 Even Rouault |
| Modifications of Unzip for Zip64 |
| Copyright (C) 1998-2010 Gilles Vollant |
| https://www.winimage.com/zLibDll/minizip.html |
| |
| This program is distributed under the terms of the same license as zlib. |
| See the accompanying LICENSE file for the full text of the license. |
| */ |
| |
| #include "mz.h" |
| #include "mz_crypt.h" |
| #include "mz_strm.h" |
| #ifdef HAVE_BZIP2 |
| # include "mz_strm_bzip.h" |
| #endif |
| #ifdef HAVE_LIBCOMP |
| # include "mz_strm_libcomp.h" |
| #endif |
| #ifdef HAVE_LZMA |
| # include "mz_strm_lzma.h" |
| #endif |
| #include "mz_strm_mem.h" |
| #ifdef HAVE_PKCRYPT |
| # include "mz_strm_pkcrypt.h" |
| #endif |
| #ifdef HAVE_WZAES |
| # include "mz_strm_wzaes.h" |
| #endif |
| #ifdef HAVE_ZLIB |
| # include "mz_strm_zlib.h" |
| #endif |
| #ifdef HAVE_ZSTD |
| # include "mz_strm_zstd.h" |
| #endif |
| |
| #include "mz_zip.h" |
| |
| #include <ctype.h> /* tolower */ |
| #include <stdio.h> /* snprintf */ |
| |
| #if defined(_MSC_VER) || defined(__MINGW32__) |
| # define localtime_r(t1, t2) (localtime_s(t2, t1) == 0 ? t1 : NULL) |
| #endif |
| #if defined(_MSC_VER) && (_MSC_VER < 1900) |
| # define snprintf _snprintf |
| #endif |
| |
| /***************************************************************************/ |
| |
| #define MZ_ZIP_MAGIC_LOCALHEADER (0x04034b50) |
| #define MZ_ZIP_MAGIC_LOCALHEADERU8 { 0x50, 0x4b, 0x03, 0x04 } |
| #define MZ_ZIP_MAGIC_CENTRALHEADER (0x02014b50) |
| #define MZ_ZIP_MAGIC_CENTRALHEADERU8 { 0x50, 0x4b, 0x01, 0x02 } |
| #define MZ_ZIP_MAGIC_ENDHEADER (0x06054b50) |
| #define MZ_ZIP_MAGIC_ENDHEADERU8 { 0x50, 0x4b, 0x05, 0x06 } |
| #define MZ_ZIP_MAGIC_ENDHEADER64 (0x06064b50) |
| #define MZ_ZIP_MAGIC_ENDLOCHEADER64 (0x07064b50) |
| #define MZ_ZIP_MAGIC_DATADESCRIPTOR (0x08074b50) |
| #define MZ_ZIP_MAGIC_DATADESCRIPTORU8 { 0x50, 0x4b, 0x07, 0x08 } |
| |
| #define MZ_ZIP_SIZE_LD_ITEM (30) |
| #define MZ_ZIP_SIZE_CD_ITEM (46) |
| #define MZ_ZIP_SIZE_CD_LOCATOR64 (20) |
| #define MZ_ZIP_SIZE_MAX_DATA_DESCRIPTOR (24) |
| |
| #define MZ_ZIP_OFFSET_CRC_SIZES (14) |
| #define MZ_ZIP_UNCOMPR_SIZE64_CUSHION (2 * 1024 * 1024) |
| |
| #ifndef MZ_ZIP_EOCD_MAX_BACK |
| #define MZ_ZIP_EOCD_MAX_BACK (1 << 20) |
| #endif |
| |
| /***************************************************************************/ |
| |
| typedef struct mz_zip_s { |
| mz_zip_file file_info; |
| mz_zip_file local_file_info; |
| |
| void *stream; /* main stream */ |
| void *cd_stream; /* pointer to the stream with the cd */ |
| void *cd_mem_stream; /* memory stream for central directory */ |
| void *compress_stream; /* compression stream */ |
| void *crypt_stream; /* encryption stream */ |
| void *file_info_stream; /* memory stream for storing file info */ |
| void *local_file_info_stream; /* memory stream for storing local file info */ |
| |
| int32_t open_mode; |
| uint8_t recover; |
| uint8_t data_descriptor; |
| |
| uint32_t disk_number_with_cd; /* number of the disk with the central dir */ |
| int64_t disk_offset_shift; /* correction for zips that have wrong offset start of cd */ |
| |
| int64_t cd_start_pos; /* pos of the first file in the central dir stream */ |
| int64_t cd_current_pos; /* pos of the current file in the central dir */ |
| int64_t cd_offset; /* offset of start of central directory */ |
| int64_t cd_size; /* size of the central directory */ |
| uint32_t cd_signature; /* signature of central directory */ |
| |
| uint8_t entry_scanned; /* entry header information read ok */ |
| uint8_t entry_opened; /* entry is open for read/write */ |
| uint8_t entry_raw; /* entry opened with raw mode */ |
| uint32_t entry_crc32; /* entry crc32 */ |
| |
| uint64_t number_entry; |
| |
| uint16_t version_madeby; |
| char *comment; |
| } mz_zip; |
| |
| /***************************************************************************/ |
| |
| #if 0 |
| # define mz_zip_print printf |
| #else |
| # define mz_zip_print(fmt, ...) |
| #endif |
| |
| /***************************************************************************/ |
| |
| /* Locate the end of central directory */ |
| static int32_t mz_zip_search_eocd(void *stream, int64_t *central_pos) { |
| int64_t file_size = 0; |
| int64_t max_back = MZ_ZIP_EOCD_MAX_BACK; |
| uint8_t find[4] = MZ_ZIP_MAGIC_ENDHEADERU8; |
| int32_t err = MZ_OK; |
| |
| err = mz_stream_seek(stream, 0, MZ_SEEK_END); |
| if (err != MZ_OK) |
| return err; |
| |
| file_size = mz_stream_tell(stream); |
| |
| if (max_back <= 0 || max_back > file_size) |
| max_back = file_size; |
| |
| return mz_stream_find_reverse(stream, (const void *)find, sizeof(find), max_back, central_pos); |
| } |
| |
| /* Locate the end of central directory 64 of a zip file */ |
| static int32_t mz_zip_search_zip64_eocd(void *stream, const int64_t end_central_offset, int64_t *central_pos) { |
| int64_t offset = 0; |
| uint32_t value32 = 0; |
| int32_t err = MZ_OK; |
| |
| *central_pos = 0; |
| |
| /* Zip64 end of central directory locator */ |
| err = mz_stream_seek(stream, end_central_offset - MZ_ZIP_SIZE_CD_LOCATOR64, MZ_SEEK_SET); |
| /* Read locator signature */ |
| if (err == MZ_OK) { |
| err = mz_stream_read_uint32(stream, &value32); |
| if (value32 != MZ_ZIP_MAGIC_ENDLOCHEADER64) |
| err = MZ_FORMAT_ERROR; |
| } |
| /* Number of the disk with the start of the zip64 end of central directory */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint32(stream, &value32); |
| /* Relative offset of the zip64 end of central directory record8 */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint64(stream, (uint64_t *)&offset); |
| /* Total number of disks */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint32(stream, &value32); |
| /* Goto end of central directory record */ |
| if (err == MZ_OK) |
| err = mz_stream_seek(stream, (int64_t)offset, MZ_SEEK_SET); |
| /* The signature */ |
| if (err == MZ_OK) { |
| err = mz_stream_read_uint32(stream, &value32); |
| if (value32 != MZ_ZIP_MAGIC_ENDHEADER64) |
| err = MZ_FORMAT_ERROR; |
| } |
| |
| if (err == MZ_OK) |
| *central_pos = offset; |
| |
| return err; |
| } |
| |
| #ifdef HAVE_PKCRYPT |
| /* Get PKWARE traditional encryption verifier */ |
| static uint16_t mz_zip_get_pk_verify(uint32_t dos_date, uint64_t crc, uint16_t flag) |
| { |
| /* Info-ZIP modification to ZipCrypto format: if bit 3 of the general |
| * purpose bit flag is set, it uses high byte of 16-bit File Time. */ |
| if (flag & MZ_ZIP_FLAG_DATA_DESCRIPTOR) |
| return ((dos_date >> 16) & 0xff) << 8 | ((dos_date >> 8) & 0xff); |
| return ((crc >> 16) & 0xff) << 8 | ((crc >> 24) & 0xff); |
| } |
| #endif |
| |
| /* Get info about the current file in the zip file */ |
| static int32_t mz_zip_entry_read_header(void *stream, uint8_t local, mz_zip_file *file_info, void *file_extra_stream) { |
| uint64_t ntfs_time = 0; |
| uint32_t reserved = 0; |
| uint32_t magic = 0; |
| uint32_t dos_date = 0; |
| uint32_t field_pos = 0; |
| uint16_t field_type = 0; |
| uint16_t field_length = 0; |
| uint32_t field_length_read = 0; |
| uint16_t ntfs_attrib_id = 0; |
| uint16_t ntfs_attrib_size = 0; |
| uint16_t linkname_size; |
| uint16_t value16 = 0; |
| uint32_t value32 = 0; |
| int64_t extrafield_pos = 0; |
| int64_t comment_pos = 0; |
| int64_t linkname_pos = 0; |
| int64_t saved_pos = 0; |
| int32_t err = MZ_OK; |
| char *linkname = NULL; |
| |
| memset(file_info, 0, sizeof(mz_zip_file)); |
| |
| /* Check the magic */ |
| err = mz_stream_read_uint32(stream, &magic); |
| if (err == MZ_END_OF_STREAM) |
| err = MZ_END_OF_LIST; |
| else if (magic == MZ_ZIP_MAGIC_ENDHEADER || magic == MZ_ZIP_MAGIC_ENDHEADER64) |
| err = MZ_END_OF_LIST; |
| else if ((local) && (magic != MZ_ZIP_MAGIC_LOCALHEADER)) |
| err = MZ_FORMAT_ERROR; |
| else if ((!local) && (magic != MZ_ZIP_MAGIC_CENTRALHEADER)) |
| err = MZ_FORMAT_ERROR; |
| |
| /* Read header fields */ |
| if (err == MZ_OK) { |
| if (!local) |
| err = mz_stream_read_uint16(stream, &file_info->version_madeby); |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(stream, &file_info->version_needed); |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(stream, &file_info->flag); |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(stream, &file_info->compression_method); |
| if (err == MZ_OK) { |
| err = mz_stream_read_uint32(stream, &dos_date); |
| file_info->modified_date = mz_zip_dosdate_to_time_t(dos_date); |
| } |
| if (err == MZ_OK) |
| err = mz_stream_read_uint32(stream, &file_info->crc); |
| #ifdef HAVE_PKCRYPT |
| if (err == MZ_OK && file_info->flag & MZ_ZIP_FLAG_ENCRYPTED) { |
| /* Use dos_date from header instead of derived from time in zip extensions */ |
| file_info->pk_verify = mz_zip_get_pk_verify(dos_date, file_info->crc, file_info->flag); |
| } |
| #endif |
| if (err == MZ_OK) { |
| err = mz_stream_read_uint32(stream, &value32); |
| file_info->compressed_size = value32; |
| } |
| if (err == MZ_OK) { |
| err = mz_stream_read_uint32(stream, &value32); |
| file_info->uncompressed_size = value32; |
| } |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(stream, &file_info->filename_size); |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(stream, &file_info->extrafield_size); |
| if (!local) { |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(stream, &file_info->comment_size); |
| if (err == MZ_OK) { |
| err = mz_stream_read_uint16(stream, &value16); |
| file_info->disk_number = value16; |
| } |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(stream, &file_info->internal_fa); |
| if (err == MZ_OK) |
| err = mz_stream_read_uint32(stream, &file_info->external_fa); |
| if (err == MZ_OK) { |
| err = mz_stream_read_uint32(stream, &value32); |
| file_info->disk_offset = value32; |
| } |
| } |
| } |
| |
| if (err == MZ_OK) |
| err = mz_stream_seek(file_extra_stream, 0, MZ_SEEK_SET); |
| |
| /* Copy variable length data to memory stream for later retrieval */ |
| if ((err == MZ_OK) && (file_info->filename_size > 0)) |
| err = mz_stream_copy(file_extra_stream, stream, file_info->filename_size); |
| mz_stream_write_uint8(file_extra_stream, 0); |
| extrafield_pos = mz_stream_tell(file_extra_stream); |
| |
| if ((err == MZ_OK) && (file_info->extrafield_size > 0)) |
| err = mz_stream_copy(file_extra_stream, stream, file_info->extrafield_size); |
| mz_stream_write_uint8(file_extra_stream, 0); |
| |
| comment_pos = mz_stream_tell(file_extra_stream); |
| if ((err == MZ_OK) && (file_info->comment_size > 0)) |
| err = mz_stream_copy(file_extra_stream, stream, file_info->comment_size); |
| mz_stream_write_uint8(file_extra_stream, 0); |
| |
| linkname_pos = mz_stream_tell(file_extra_stream); |
| /* Overwrite if we encounter UNIX1 extra block */ |
| mz_stream_write_uint8(file_extra_stream, 0); |
| |
| if ((err == MZ_OK) && (file_info->extrafield_size > 0)) { |
| /* Seek to and parse the extra field */ |
| err = mz_stream_seek(file_extra_stream, extrafield_pos, MZ_SEEK_SET); |
| |
| while ((err == MZ_OK) && (field_pos + 4 <= file_info->extrafield_size)) { |
| err = mz_zip_extrafield_read(file_extra_stream, &field_type, &field_length); |
| if (err != MZ_OK) |
| break; |
| field_pos += 4; |
| |
| /* Don't allow field length to exceed size of remaining extrafield */ |
| if (field_length > (file_info->extrafield_size - field_pos)) |
| field_length = (uint16_t)(file_info->extrafield_size - field_pos); |
| |
| /* Read ZIP64 extra field */ |
| if ((field_type == MZ_ZIP_EXTENSION_ZIP64) && (field_length >= 8)) { |
| if ((err == MZ_OK) && (file_info->uncompressed_size == UINT32_MAX)) { |
| err = mz_stream_read_int64(file_extra_stream, &file_info->uncompressed_size); |
| if (file_info->uncompressed_size < 0) |
| err = MZ_FORMAT_ERROR; |
| } |
| if ((err == MZ_OK) && (file_info->compressed_size == UINT32_MAX)) { |
| err = mz_stream_read_int64(file_extra_stream, &file_info->compressed_size); |
| if (file_info->compressed_size < 0) |
| err = MZ_FORMAT_ERROR; |
| } |
| if ((err == MZ_OK) && (file_info->disk_offset == UINT32_MAX)) { |
| err = mz_stream_read_int64(file_extra_stream, &file_info->disk_offset); |
| if (file_info->disk_offset < 0) |
| err = MZ_FORMAT_ERROR; |
| } |
| if ((err == MZ_OK) && (file_info->disk_number == UINT16_MAX)) |
| err = mz_stream_read_uint32(file_extra_stream, &file_info->disk_number); |
| } |
| /* Read NTFS extra field */ |
| else if ((field_type == MZ_ZIP_EXTENSION_NTFS) && (field_length > 4)) { |
| if (err == MZ_OK) |
| err = mz_stream_read_uint32(file_extra_stream, &reserved); |
| field_length_read = 4; |
| |
| while ((err == MZ_OK) && (field_length_read + 4 <= field_length)) { |
| err = mz_stream_read_uint16(file_extra_stream, &ntfs_attrib_id); |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(file_extra_stream, &ntfs_attrib_size); |
| field_length_read += 4; |
| |
| if ((err == MZ_OK) && (ntfs_attrib_id == 0x01) && (ntfs_attrib_size == 24)) { |
| err = mz_stream_read_uint64(file_extra_stream, &ntfs_time); |
| mz_zip_ntfs_to_unix_time(ntfs_time, &file_info->modified_date); |
| |
| if (err == MZ_OK) { |
| err = mz_stream_read_uint64(file_extra_stream, &ntfs_time); |
| mz_zip_ntfs_to_unix_time(ntfs_time, &file_info->accessed_date); |
| } |
| if (err == MZ_OK) { |
| err = mz_stream_read_uint64(file_extra_stream, &ntfs_time); |
| mz_zip_ntfs_to_unix_time(ntfs_time, &file_info->creation_date); |
| } |
| } else if ((err == MZ_OK) && (field_length_read + ntfs_attrib_size <= field_length)) { |
| err = mz_stream_seek(file_extra_stream, ntfs_attrib_size, MZ_SEEK_CUR); |
| } |
| |
| field_length_read += ntfs_attrib_size; |
| } |
| } |
| /* Read UNIX1 extra field */ |
| else if ((field_type == MZ_ZIP_EXTENSION_UNIX1) && (field_length >= 12)) { |
| if (err == MZ_OK) { |
| err = mz_stream_read_uint32(file_extra_stream, &value32); |
| if (err == MZ_OK && file_info->accessed_date == 0) |
| file_info->accessed_date = value32; |
| } |
| if (err == MZ_OK) { |
| err = mz_stream_read_uint32(file_extra_stream, &value32); |
| if (err == MZ_OK && file_info->modified_date == 0) |
| file_info->modified_date = value32; |
| } |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(file_extra_stream, &value16); /* User id */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(file_extra_stream, &value16); /* Group id */ |
| |
| /* Copy linkname to end of file extra stream so we can return null |
| terminated string */ |
| linkname_size = field_length - 12; |
| if ((err == MZ_OK) && (linkname_size > 0)) { |
| linkname = (char *)malloc(linkname_size); |
| if (linkname) { |
| if (mz_stream_read(file_extra_stream, linkname, linkname_size) != linkname_size) |
| err = MZ_READ_ERROR; |
| if (err == MZ_OK) { |
| saved_pos = mz_stream_tell(file_extra_stream); |
| |
| mz_stream_seek(file_extra_stream, linkname_pos, MZ_SEEK_SET); |
| mz_stream_write(file_extra_stream, linkname, linkname_size); |
| mz_stream_write_uint8(file_extra_stream, 0); |
| |
| mz_stream_seek(file_extra_stream, saved_pos, MZ_SEEK_SET); |
| } |
| free(linkname); |
| } |
| } |
| } |
| #ifdef HAVE_WZAES |
| /* Read AES extra field */ |
| else if ((field_type == MZ_ZIP_EXTENSION_AES) && (field_length == 7)) { |
| uint8_t value8 = 0; |
| /* Verify version info */ |
| err = mz_stream_read_uint16(file_extra_stream, &value16); |
| /* Support AE-1 and AE-2 */ |
| if (value16 != 1 && value16 != 2) |
| err = MZ_FORMAT_ERROR; |
| file_info->aes_version = value16; |
| if (err == MZ_OK) |
| err = mz_stream_read_uint8(file_extra_stream, &value8); |
| if ((char)value8 != 'A') |
| err = MZ_FORMAT_ERROR; |
| if (err == MZ_OK) |
| err = mz_stream_read_uint8(file_extra_stream, &value8); |
| if ((char)value8 != 'E') |
| err = MZ_FORMAT_ERROR; |
| /* Get AES encryption strength and actual compression method */ |
| if (err == MZ_OK) { |
| err = mz_stream_read_uint8(file_extra_stream, &value8); |
| file_info->aes_encryption_mode = value8; |
| } |
| if (err == MZ_OK) { |
| err = mz_stream_read_uint16(file_extra_stream, &value16); |
| file_info->compression_method = value16; |
| } |
| } |
| #endif |
| else if (field_length > 0) { |
| err = mz_stream_seek(file_extra_stream, field_length, MZ_SEEK_CUR); |
| } |
| |
| field_pos += field_length; |
| } |
| } |
| |
| /* Get pointers to variable length data */ |
| mz_stream_mem_get_buffer(file_extra_stream, (const void **)&file_info->filename); |
| mz_stream_mem_get_buffer_at(file_extra_stream, extrafield_pos, (const void **)&file_info->extrafield); |
| mz_stream_mem_get_buffer_at(file_extra_stream, comment_pos, (const void **)&file_info->comment); |
| mz_stream_mem_get_buffer_at(file_extra_stream, linkname_pos, (const void **)&file_info->linkname); |
| |
| /* Set to empty string just in-case */ |
| if (!file_info->filename) |
| file_info->filename = ""; |
| if (!file_info->extrafield) |
| file_info->extrafield_size = 0; |
| if (!file_info->comment) |
| file_info->comment = ""; |
| if (!file_info->linkname) |
| file_info->linkname = ""; |
| |
| if (err == MZ_OK) { |
| mz_zip_print("Zip - Entry - Read header - %s (local %" PRId8 ")\n", |
| file_info->filename, local); |
| mz_zip_print("Zip - Entry - Read header compress (ucs %" PRId64 " cs %" PRId64 " crc 0x%08" PRIx32 ")\n", |
| file_info->uncompressed_size, file_info->compressed_size, file_info->crc); |
| if (!local) { |
| mz_zip_print("Zip - Entry - Read header disk (disk %" PRIu32 " offset %" PRId64 ")\n", |
| file_info->disk_number, file_info->disk_offset); |
| } |
| mz_zip_print("Zip - Entry - Read header variable (fnl %" PRId32 " efs %" PRId32 " cms %" PRId32 ")\n", |
| file_info->filename_size, file_info->extrafield_size, file_info->comment_size); |
| } |
| |
| return err; |
| } |
| |
| static int32_t mz_zip_entry_read_descriptor(void *stream, uint8_t zip64, uint32_t *crc32, int64_t *compressed_size, int64_t *uncompressed_size) { |
| uint32_t value32 = 0; |
| int64_t value64 = 0; |
| int32_t err = MZ_OK; |
| |
| err = mz_stream_read_uint32(stream, &value32); |
| if (value32 != MZ_ZIP_MAGIC_DATADESCRIPTOR) |
| err = MZ_FORMAT_ERROR; |
| if (err == MZ_OK) |
| err = mz_stream_read_uint32(stream, &value32); |
| if (err == MZ_OK && crc32) |
| *crc32 = value32; |
| if (err == MZ_OK) { |
| /* If zip 64 extension is enabled then read as 8 byte */ |
| if (!zip64) { |
| err = mz_stream_read_uint32(stream, &value32); |
| value64 = value32; |
| } else { |
| err = mz_stream_read_int64(stream, &value64); |
| if (value64 < 0) |
| err = MZ_FORMAT_ERROR; |
| } |
| if (err == MZ_OK && compressed_size) |
| *compressed_size = value64; |
| } |
| if (err == MZ_OK) { |
| if (!zip64) { |
| err = mz_stream_read_uint32(stream, &value32); |
| value64 = value32; |
| } else { |
| err = mz_stream_read_int64(stream, &value64); |
| if (value64 < 0) |
| err = MZ_FORMAT_ERROR; |
| } |
| if (err == MZ_OK && uncompressed_size) |
| *uncompressed_size = value64; |
| } |
| |
| return err; |
| } |
| |
| static int32_t mz_zip_entry_write_crc_sizes(void *stream, uint8_t zip64, uint8_t mask, mz_zip_file *file_info) { |
| int32_t err = MZ_OK; |
| |
| if (mask) |
| err = mz_stream_write_uint32(stream, 0); |
| else |
| err = mz_stream_write_uint32(stream, file_info->crc); /* crc */ |
| |
| /* For backwards-compatibility with older zip applications we set all sizes to UINT32_MAX |
| * when zip64 is needed, instead of only setting sizes larger than UINT32_MAX. */ |
| |
| if (err == MZ_OK) { |
| if (zip64) /* compr size */ |
| err = mz_stream_write_uint32(stream, UINT32_MAX); |
| else |
| err = mz_stream_write_uint32(stream, (uint32_t)file_info->compressed_size); |
| } |
| if (err == MZ_OK) { |
| if (mask) /* uncompr size */ |
| err = mz_stream_write_uint32(stream, 0); |
| else if (zip64) |
| err = mz_stream_write_uint32(stream, UINT32_MAX); |
| else |
| err = mz_stream_write_uint32(stream, (uint32_t)file_info->uncompressed_size); |
| } |
| return err; |
| } |
| |
| static int32_t mz_zip_entry_needs_zip64(mz_zip_file *file_info, uint8_t local, uint8_t *zip64) { |
| uint32_t max_uncompressed_size = UINT32_MAX; |
| uint8_t needs_zip64 = 0; |
| |
| if (!zip64) |
| return MZ_PARAM_ERROR; |
| |
| *zip64 = 0; |
| |
| if (local) { |
| /* At local header we might not know yet whether compressed size will overflow unsigned |
| 32-bit integer which might happen for high entropy data so we give it some cushion */ |
| |
| max_uncompressed_size -= MZ_ZIP_UNCOMPR_SIZE64_CUSHION; |
| } |
| |
| needs_zip64 = (file_info->uncompressed_size >= max_uncompressed_size) || |
| (file_info->compressed_size >= UINT32_MAX); |
| |
| if (!local) { |
| /* Disk offset and number only used in central directory header */ |
| needs_zip64 |= (file_info->disk_offset >= UINT32_MAX) || |
| (file_info->disk_number >= UINT16_MAX); |
| } |
| |
| if (file_info->zip64 == MZ_ZIP64_AUTO) { |
| /* If uncompressed size is unknown, assume zip64 for 64-bit data descriptors */ |
| if (local && file_info->uncompressed_size == 0) { |
| /* Don't use zip64 for local header directory entries */ |
| if (mz_zip_attrib_is_dir(file_info->external_fa, file_info->version_madeby) != MZ_OK) { |
| *zip64 = 1; |
| } |
| } |
| *zip64 |= needs_zip64; |
| } else if (file_info->zip64 == MZ_ZIP64_FORCE) { |
| *zip64 = 1; |
| } else if (file_info->zip64 == MZ_ZIP64_DISABLE) { |
| /* Zip64 extension is required to zip file */ |
| if (needs_zip64) |
| return MZ_PARAM_ERROR; |
| } |
| |
| return MZ_OK; |
| } |
| |
| static int32_t mz_zip_entry_write_header(void *stream, uint8_t local, mz_zip_file *file_info) { |
| uint64_t ntfs_time = 0; |
| uint32_t reserved = 0; |
| uint32_t dos_date = 0; |
| uint16_t extrafield_size = 0; |
| uint16_t field_type = 0; |
| uint16_t field_length = 0; |
| uint16_t field_length_zip64 = 0; |
| uint16_t field_length_ntfs = 0; |
| uint16_t field_length_aes = 0; |
| uint16_t field_length_unix1 = 0; |
| uint16_t filename_size = 0; |
| uint16_t filename_length = 0; |
| uint16_t linkname_size = 0; |
| uint16_t version_needed = 0; |
| int32_t comment_size = 0; |
| int32_t err = MZ_OK; |
| int32_t err_mem = MZ_OK; |
| uint8_t zip64 = 0; |
| uint8_t skip_aes = 0; |
| uint8_t mask = 0; |
| uint8_t write_end_slash = 0; |
| const char *filename = NULL; |
| char masked_name[64]; |
| void *file_extra_stream = NULL; |
| |
| if (!file_info) |
| return MZ_PARAM_ERROR; |
| |
| if ((local) && (file_info->flag & MZ_ZIP_FLAG_MASK_LOCAL_INFO)) |
| mask = 1; |
| |
| /* Determine if zip64 extra field is necessary */ |
| err = mz_zip_entry_needs_zip64(file_info, local, &zip64); |
| if (err != MZ_OK) |
| return err; |
| |
| /* Start calculating extra field sizes */ |
| if (zip64) { |
| /* Both compressed and uncompressed sizes must be included (at least in local header) */ |
| field_length_zip64 = 8 + 8; |
| if ((!local) && (file_info->disk_offset >= UINT32_MAX)) |
| field_length_zip64 += 8; |
| |
| extrafield_size += 4; |
| extrafield_size += field_length_zip64; |
| } |
| |
| /* Calculate extra field size and check for duplicates */ |
| if (file_info->extrafield_size > 0) { |
| mz_stream_mem_create(&file_extra_stream); |
| mz_stream_mem_set_buffer(file_extra_stream, (void *)file_info->extrafield, |
| file_info->extrafield_size); |
| |
| do { |
| err_mem = mz_stream_read_uint16(file_extra_stream, &field_type); |
| if (err_mem == MZ_OK) |
| err_mem = mz_stream_read_uint16(file_extra_stream, &field_length); |
| if (err_mem != MZ_OK) |
| break; |
| |
| /* Prefer incoming aes extensions over ours */ |
| if (field_type == MZ_ZIP_EXTENSION_AES) |
| skip_aes = 1; |
| |
| /* Prefer our zip64, ntfs, unix1 extension over incoming */ |
| if (field_type != MZ_ZIP_EXTENSION_ZIP64 && field_type != MZ_ZIP_EXTENSION_NTFS && |
| field_type != MZ_ZIP_EXTENSION_UNIX1) |
| extrafield_size += 4 + field_length; |
| |
| if (err_mem == MZ_OK) |
| err_mem = mz_stream_seek(file_extra_stream, field_length, MZ_SEEK_CUR); |
| } while (err_mem == MZ_OK); |
| } |
| |
| #ifdef HAVE_WZAES |
| if (!skip_aes) { |
| if ((file_info->flag & MZ_ZIP_FLAG_ENCRYPTED) && (file_info->aes_version)) { |
| field_length_aes = 1 + 1 + 1 + 2 + 2; |
| extrafield_size += 4 + field_length_aes; |
| } |
| } |
| #else |
| MZ_UNUSED(field_length_aes); |
| MZ_UNUSED(skip_aes); |
| #endif |
| /* NTFS timestamps */ |
| if ((file_info->modified_date != 0) && |
| (file_info->accessed_date != 0) && |
| (file_info->creation_date != 0) && (!mask)) { |
| field_length_ntfs = 8 + 8 + 8 + 4 + 2 + 2; |
| extrafield_size += 4 + field_length_ntfs; |
| } |
| |
| /* Unix1 symbolic links */ |
| if (file_info->linkname && *file_info->linkname != 0) { |
| linkname_size = (uint16_t)strlen(file_info->linkname); |
| field_length_unix1 = 12 + linkname_size; |
| extrafield_size += 4 + field_length_unix1; |
| } |
| |
| if (local) |
| err = mz_stream_write_uint32(stream, MZ_ZIP_MAGIC_LOCALHEADER); |
| else { |
| err = mz_stream_write_uint32(stream, MZ_ZIP_MAGIC_CENTRALHEADER); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(stream, file_info->version_madeby); |
| } |
| |
| /* Calculate version needed to extract */ |
| if (err == MZ_OK) { |
| version_needed = file_info->version_needed; |
| if (version_needed == 0) { |
| version_needed = 20; |
| if (zip64) |
| version_needed = 45; |
| #ifdef HAVE_WZAES |
| if ((file_info->flag & MZ_ZIP_FLAG_ENCRYPTED) && (file_info->aes_version)) |
| version_needed = 51; |
| #endif |
| #if defined(HAVE_LZMA) || defined(HAVE_LIBCOMP) |
| if ((file_info->compression_method == MZ_COMPRESS_METHOD_LZMA) || |
| (file_info->compression_method == MZ_COMPRESS_METHOD_XZ)) |
| version_needed = 63; |
| #endif |
| } |
| err = mz_stream_write_uint16(stream, version_needed); |
| } |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(stream, file_info->flag); |
| if (err == MZ_OK) { |
| #ifdef HAVE_WZAES |
| if ((file_info->flag & MZ_ZIP_FLAG_ENCRYPTED) && (file_info->aes_version)) |
| err = mz_stream_write_uint16(stream, MZ_COMPRESS_METHOD_AES); |
| else |
| #endif |
| err = mz_stream_write_uint16(stream, file_info->compression_method); |
| } |
| if (err == MZ_OK) { |
| if (file_info->modified_date != 0 && !mask) |
| dos_date = mz_zip_time_t_to_dos_date(file_info->modified_date); |
| err = mz_stream_write_uint32(stream, dos_date); |
| } |
| |
| if (err == MZ_OK) |
| err = mz_zip_entry_write_crc_sizes(stream, zip64, mask, file_info); |
| |
| if (mask) { |
| snprintf(masked_name, sizeof(masked_name), "%" PRIx32 "_%" PRIx64, |
| file_info->disk_number, file_info->disk_offset); |
| filename = masked_name; |
| } else { |
| filename = file_info->filename; |
| } |
| |
| filename_length = (uint16_t)strlen(filename); |
| filename_size += filename_length; |
| |
| if ((mz_zip_attrib_is_dir(file_info->external_fa, file_info->version_madeby) == MZ_OK) && |
| ((filename[filename_length - 1] != '/') && (filename[filename_length - 1] != '\\'))) { |
| filename_size += 1; |
| write_end_slash = 1; |
| } |
| |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(stream, filename_size); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(stream, extrafield_size); |
| |
| if (!local) { |
| if (file_info->comment) { |
| comment_size = (int32_t)strlen(file_info->comment); |
| if (comment_size > UINT16_MAX) |
| comment_size = UINT16_MAX; |
| } |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(stream, (uint16_t)comment_size); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(stream, (uint16_t)file_info->disk_number); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(stream, file_info->internal_fa); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint32(stream, file_info->external_fa); |
| if (err == MZ_OK) { |
| if (file_info->disk_offset >= UINT32_MAX) |
| err = mz_stream_write_uint32(stream, UINT32_MAX); |
| else |
| err = mz_stream_write_uint32(stream, (uint32_t)file_info->disk_offset); |
| } |
| } |
| |
| if (err == MZ_OK) { |
| const char *backslash = NULL; |
| const char *next = filename; |
| int32_t left = filename_length; |
| |
| /* Ensure all slashes are written as forward slashes according to 4.4.17.1 */ |
| while ((err == MZ_OK) && (backslash = strrchr(next, '\\'))) { |
| int32_t part_length = (int32_t)(backslash - next); |
| |
| if (mz_stream_write(stream, next, part_length) != part_length || |
| mz_stream_write(stream, "/", 1) != 1) |
| err = MZ_WRITE_ERROR; |
| |
| left -= part_length + 1; |
| next = backslash + 1; |
| } |
| |
| if (err == MZ_OK && left > 0) { |
| if (mz_stream_write(stream, next, left) != left) |
| err = MZ_WRITE_ERROR; |
| } |
| |
| /* Ensure that directories have a slash appended to them for compatibility */ |
| if (err == MZ_OK && write_end_slash) |
| err = mz_stream_write_uint8(stream, '/'); |
| } |
| |
| /* Write ZIP64 extra field first so we can update sizes later if data descriptor not used */ |
| if ((err == MZ_OK) && (zip64)) { |
| err = mz_zip_extrafield_write(stream, MZ_ZIP_EXTENSION_ZIP64, field_length_zip64); |
| if (err == MZ_OK) { |
| if (mask) |
| err = mz_stream_write_int64(stream, 0); |
| else |
| err = mz_stream_write_int64(stream, file_info->uncompressed_size); |
| } |
| if (err == MZ_OK) |
| err = mz_stream_write_int64(stream, file_info->compressed_size); |
| if ((err == MZ_OK) && (!local) && (file_info->disk_offset >= UINT32_MAX)) |
| err = mz_stream_write_int64(stream, file_info->disk_offset); |
| if ((err == MZ_OK) && (!local) && (file_info->disk_number >= UINT16_MAX)) |
| err = mz_stream_write_uint32(stream, file_info->disk_number); |
| } |
| /* Write NTFS extra field */ |
| if ((err == MZ_OK) && (field_length_ntfs > 0)) { |
| err = mz_zip_extrafield_write(stream, MZ_ZIP_EXTENSION_NTFS, field_length_ntfs); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint32(stream, reserved); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(stream, 0x01); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(stream, field_length_ntfs - 8); |
| if (err == MZ_OK) { |
| mz_zip_unix_to_ntfs_time(file_info->modified_date, &ntfs_time); |
| err = mz_stream_write_uint64(stream, ntfs_time); |
| } |
| if (err == MZ_OK) { |
| mz_zip_unix_to_ntfs_time(file_info->accessed_date, &ntfs_time); |
| err = mz_stream_write_uint64(stream, ntfs_time); |
| } |
| if (err == MZ_OK) { |
| mz_zip_unix_to_ntfs_time(file_info->creation_date, &ntfs_time); |
| err = mz_stream_write_uint64(stream, ntfs_time); |
| } |
| } |
| /* Write UNIX extra block extra field */ |
| if ((err == MZ_OK) && (field_length_unix1 > 0)) { |
| err = mz_zip_extrafield_write(stream, MZ_ZIP_EXTENSION_UNIX1, field_length_unix1); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint32(stream, (uint32_t)file_info->accessed_date); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint32(stream, (uint32_t)file_info->modified_date); |
| if (err == MZ_OK) /* User id */ |
| err = mz_stream_write_uint16(stream, 0); |
| if (err == MZ_OK) /* Group id */ |
| err = mz_stream_write_uint16(stream, 0); |
| if (err == MZ_OK && linkname_size > 0) { |
| if (mz_stream_write(stream, file_info->linkname, linkname_size) != linkname_size) |
| err = MZ_WRITE_ERROR; |
| } |
| } |
| #ifdef HAVE_WZAES |
| /* Write AES extra field */ |
| if ((err == MZ_OK) && (!skip_aes) && (file_info->flag & MZ_ZIP_FLAG_ENCRYPTED) && (file_info->aes_version)) { |
| err = mz_zip_extrafield_write(stream, MZ_ZIP_EXTENSION_AES, field_length_aes); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(stream, file_info->aes_version); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint8(stream, 'A'); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint8(stream, 'E'); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint8(stream, file_info->aes_encryption_mode); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(stream, file_info->compression_method); |
| } |
| #endif |
| |
| if (file_info->extrafield_size > 0) { |
| err_mem = mz_stream_mem_seek(file_extra_stream, 0, MZ_SEEK_SET); |
| while (err == MZ_OK && err_mem == MZ_OK) { |
| err_mem = mz_stream_read_uint16(file_extra_stream, &field_type); |
| if (err_mem == MZ_OK) |
| err_mem = mz_stream_read_uint16(file_extra_stream, &field_length); |
| if (err_mem != MZ_OK) |
| break; |
| |
| /* Prefer our zip 64, ntfs, unix1 extensions over incoming */ |
| if (field_type == MZ_ZIP_EXTENSION_ZIP64 || field_type == MZ_ZIP_EXTENSION_NTFS || |
| field_type == MZ_ZIP_EXTENSION_UNIX1) { |
| err_mem = mz_stream_seek(file_extra_stream, field_length, MZ_SEEK_CUR); |
| continue; |
| } |
| |
| err = mz_stream_write_uint16(stream, field_type); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(stream, field_length); |
| if (err == MZ_OK) |
| err = mz_stream_copy(stream, file_extra_stream, field_length); |
| } |
| |
| mz_stream_mem_delete(&file_extra_stream); |
| } |
| |
| if (err == MZ_OK && !local && file_info->comment) { |
| if (mz_stream_write(stream, file_info->comment, file_info->comment_size) != file_info->comment_size) |
| err = MZ_WRITE_ERROR; |
| } |
| |
| return err; |
| } |
| |
| static int32_t mz_zip_entry_write_descriptor(void *stream, uint8_t zip64, uint32_t crc32, int64_t compressed_size, int64_t uncompressed_size) { |
| int32_t err = MZ_OK; |
| |
| err = mz_stream_write_uint32(stream, MZ_ZIP_MAGIC_DATADESCRIPTOR); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint32(stream, crc32); |
| |
| /* Store data descriptor as 8 bytes if zip 64 extension enabled */ |
| if (err == MZ_OK) { |
| /* Zip 64 extension is enabled when uncompressed size is > UINT32_MAX */ |
| if (!zip64) |
| err = mz_stream_write_uint32(stream, (uint32_t)compressed_size); |
| else |
| err = mz_stream_write_int64(stream, compressed_size); |
| } |
| if (err == MZ_OK) { |
| if (!zip64) |
| err = mz_stream_write_uint32(stream, (uint32_t)uncompressed_size); |
| else |
| err = mz_stream_write_int64(stream, uncompressed_size); |
| } |
| |
| return err; |
| } |
| |
| static int32_t mz_zip_read_cd(void *handle) { |
| mz_zip *zip = (mz_zip *)handle; |
| uint64_t number_entry_cd64 = 0; |
| uint64_t number_entry_cd = 0; |
| int64_t eocd_pos = 0; |
| int64_t eocd_pos64 = 0; |
| int64_t value64i = 0; |
| uint16_t value16 = 0; |
| uint32_t value32 = 0; |
| uint64_t value64 = 0; |
| uint16_t comment_size = 0; |
| int32_t comment_read = 0; |
| int32_t err = MZ_OK; |
| |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| |
| /* Read and cache central directory records */ |
| err = mz_zip_search_eocd(zip->stream, &eocd_pos); |
| if (err == MZ_OK) { |
| /* The signature, already checked */ |
| err = mz_stream_read_uint32(zip->stream, &value32); |
| /* Number of this disk */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(zip->stream, &value16); |
| /* Number of the disk with the start of the central directory */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(zip->stream, &value16); |
| zip->disk_number_with_cd = value16; |
| /* Total number of entries in the central dir on this disk */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(zip->stream, &value16); |
| zip->number_entry = value16; |
| /* Total number of entries in the central dir */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(zip->stream, &value16); |
| number_entry_cd = value16; |
| if (number_entry_cd != zip->number_entry) |
| err = MZ_FORMAT_ERROR; |
| /* Size of the central directory */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint32(zip->stream, &value32); |
| if (err == MZ_OK) |
| zip->cd_size = value32; |
| /* Offset of start of central directory with respect to the starting disk number */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint32(zip->stream, &value32); |
| if (err == MZ_OK) |
| zip->cd_offset = value32; |
| /* Zip file global comment length */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(zip->stream, &comment_size); |
| if ((err == MZ_OK) && (comment_size > 0)) { |
| zip->comment = (char *)malloc(comment_size + 1); |
| if (zip->comment) { |
| comment_read = mz_stream_read(zip->stream, zip->comment, comment_size); |
| /* Don't fail if incorrect comment length read, not critical */ |
| if (comment_read < 0) |
| comment_read = 0; |
| zip->comment[comment_read] = 0; |
| } |
| } |
| |
| if ((err == MZ_OK) && ((number_entry_cd == UINT16_MAX) || (zip->cd_offset == UINT32_MAX))) { |
| /* Format should be Zip64, as the central directory or file size is too large */ |
| if (mz_zip_search_zip64_eocd(zip->stream, eocd_pos, &eocd_pos64) == MZ_OK) { |
| eocd_pos = eocd_pos64; |
| |
| err = mz_stream_seek(zip->stream, eocd_pos, MZ_SEEK_SET); |
| /* The signature, already checked */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint32(zip->stream, &value32); |
| /* Size of zip64 end of central directory record */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint64(zip->stream, &value64); |
| /* Version made by */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(zip->stream, &zip->version_madeby); |
| /* Version needed to extract */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(zip->stream, &value16); |
| /* Number of this disk */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint32(zip->stream, &value32); |
| /* Number of the disk with the start of the central directory */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint32(zip->stream, &zip->disk_number_with_cd); |
| /* Total number of entries in the central directory on this disk */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint64(zip->stream, &zip->number_entry); |
| /* Total number of entries in the central directory */ |
| if (err == MZ_OK) |
| err = mz_stream_read_uint64(zip->stream, &number_entry_cd64); |
| if (zip->number_entry != number_entry_cd64) |
| err = MZ_FORMAT_ERROR; |
| /* Size of the central directory */ |
| if (err == MZ_OK) { |
| err = mz_stream_read_int64(zip->stream, &zip->cd_size); |
| if (zip->cd_size < 0) |
| err = MZ_FORMAT_ERROR; |
| } |
| /* Offset of start of central directory with respect to the starting disk number */ |
| if (err == MZ_OK) { |
| err = mz_stream_read_int64(zip->stream, &zip->cd_offset); |
| if (zip->cd_offset < 0) |
| err = MZ_FORMAT_ERROR; |
| } |
| } else if ((zip->number_entry == UINT16_MAX) || (number_entry_cd != zip->number_entry) || |
| (zip->cd_size == UINT16_MAX) || (zip->cd_offset == UINT32_MAX)) { |
| err = MZ_FORMAT_ERROR; |
| } |
| } |
| } |
| |
| if (err == MZ_OK) { |
| mz_zip_print("Zip - Read cd (disk %" PRId32 " entries %" PRId64 " offset %" PRId64 " size %" PRId64 ")\n", |
| zip->disk_number_with_cd, zip->number_entry, zip->cd_offset, zip->cd_size); |
| |
| /* Verify central directory signature exists at offset */ |
| err = mz_stream_seek(zip->stream, zip->cd_offset, MZ_SEEK_SET); |
| if (err == MZ_OK) |
| err = mz_stream_read_uint32(zip->stream, &zip->cd_signature); |
| if ((err == MZ_OK) && (zip->cd_signature != MZ_ZIP_MAGIC_CENTRALHEADER)) { |
| /* If cd exists in large file and no zip-64 support, error for recover */ |
| if (eocd_pos > UINT32_MAX && eocd_pos64 == 0) |
| err = MZ_FORMAT_ERROR; |
| /* If cd not found attempt to seek backward to find it */ |
| if (err == MZ_OK) |
| err = mz_stream_seek(zip->stream, eocd_pos - zip->cd_size, MZ_SEEK_SET); |
| if (err == MZ_OK) |
| err = mz_stream_read_uint32(zip->stream, &zip->cd_signature); |
| if ((err == MZ_OK) && (zip->cd_signature == MZ_ZIP_MAGIC_CENTRALHEADER)) { |
| /* If found compensate for incorrect locations */ |
| value64i = zip->cd_offset; |
| zip->cd_offset = eocd_pos - zip->cd_size; |
| /* Assume disk has prepended data */ |
| zip->disk_offset_shift = zip->cd_offset - value64i; |
| } |
| } |
| } |
| |
| if (err == MZ_OK) { |
| if (eocd_pos < zip->cd_offset) { |
| /* End of central dir should always come after central dir */ |
| err = MZ_FORMAT_ERROR; |
| } else if ((uint64_t)eocd_pos < (uint64_t)zip->cd_offset + zip->cd_size) { |
| /* Truncate size of cd if incorrect size or offset provided */ |
| zip->cd_size = eocd_pos - zip->cd_offset; |
| } |
| } |
| |
| return err; |
| } |
| |
| static int32_t mz_zip_write_cd(void *handle) { |
| mz_zip *zip = (mz_zip *)handle; |
| int64_t zip64_eocd_pos_inzip = 0; |
| int64_t disk_number = 0; |
| int64_t disk_size = 0; |
| int32_t comment_size = 0; |
| int32_t err = MZ_OK; |
| |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| |
| if (mz_stream_get_prop_int64(zip->stream, MZ_STREAM_PROP_DISK_NUMBER, &disk_number) == MZ_OK) |
| zip->disk_number_with_cd = (uint32_t)disk_number; |
| if (mz_stream_get_prop_int64(zip->stream, MZ_STREAM_PROP_DISK_SIZE, &disk_size) == MZ_OK && disk_size > 0) |
| zip->disk_number_with_cd += 1; |
| mz_stream_set_prop_int64(zip->stream, MZ_STREAM_PROP_DISK_NUMBER, -1); |
| if ((zip->disk_number_with_cd > 0) && (zip->open_mode & MZ_OPEN_MODE_APPEND)) { |
| // Overwrite existing central directory if using split disks |
| mz_stream_seek(zip->stream, 0, MZ_SEEK_SET); |
| } |
| |
| zip->cd_offset = mz_stream_tell(zip->stream); |
| mz_stream_seek(zip->cd_mem_stream, 0, MZ_SEEK_END); |
| zip->cd_size = (uint32_t)mz_stream_tell(zip->cd_mem_stream); |
| mz_stream_seek(zip->cd_mem_stream, 0, MZ_SEEK_SET); |
| |
| err = mz_stream_copy(zip->stream, zip->cd_mem_stream, (int32_t)zip->cd_size); |
| |
| mz_zip_print("Zip - Write cd (disk %" PRId32 " entries %" PRId64 " offset %" PRId64 " size %" PRId64 ")\n", |
| zip->disk_number_with_cd, zip->number_entry, zip->cd_offset, zip->cd_size); |
| |
| if (zip->cd_size == 0 && zip->number_entry > 0) { |
| // Zip does not contain central directory, open with recovery option |
| return MZ_FORMAT_ERROR; |
| } |
| |
| /* Write the ZIP64 central directory header */ |
| if (zip->cd_offset >= UINT32_MAX || zip->number_entry >= UINT16_MAX) { |
| zip64_eocd_pos_inzip = mz_stream_tell(zip->stream); |
| |
| err = mz_stream_write_uint32(zip->stream, MZ_ZIP_MAGIC_ENDHEADER64); |
| |
| /* Size of this 'zip64 end of central directory' */ |
| if (err == MZ_OK) |
| err = mz_stream_write_uint64(zip->stream, (uint64_t)44); |
| /* Version made by */ |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(zip->stream, zip->version_madeby); |
| /* Version needed */ |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(zip->stream, (uint16_t)45); |
| /* Number of this disk */ |
| if (err == MZ_OK) |
| err = mz_stream_write_uint32(zip->stream, zip->disk_number_with_cd); |
| /* Number of the disk with the start of the central directory */ |
| if (err == MZ_OK) |
| err = mz_stream_write_uint32(zip->stream, zip->disk_number_with_cd); |
| /* Total number of entries in the central dir on this disk */ |
| if (err == MZ_OK) |
| err = mz_stream_write_uint64(zip->stream, zip->number_entry); |
| /* Total number of entries in the central dir */ |
| if (err == MZ_OK) |
| err = mz_stream_write_uint64(zip->stream, zip->number_entry); |
| /* Size of the central directory */ |
| if (err == MZ_OK) |
| err = mz_stream_write_int64(zip->stream, zip->cd_size); |
| /* Offset of start of central directory with respect to the starting disk number */ |
| if (err == MZ_OK) |
| err = mz_stream_write_int64(zip->stream, zip->cd_offset); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint32(zip->stream, MZ_ZIP_MAGIC_ENDLOCHEADER64); |
| |
| /* Number of the disk with the start of the central directory */ |
| if (err == MZ_OK) |
| err = mz_stream_write_uint32(zip->stream, zip->disk_number_with_cd); |
| /* Relative offset to the end of zip64 central directory */ |
| if (err == MZ_OK) |
| err = mz_stream_write_int64(zip->stream, zip64_eocd_pos_inzip); |
| /* Number of the disk with the start of the central directory */ |
| if (err == MZ_OK) |
| err = mz_stream_write_uint32(zip->stream, zip->disk_number_with_cd + 1); |
| } |
| |
| /* Write the central directory header */ |
| |
| /* Signature */ |
| if (err == MZ_OK) |
| err = mz_stream_write_uint32(zip->stream, MZ_ZIP_MAGIC_ENDHEADER); |
| /* Number of this disk */ |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(zip->stream, (uint16_t)zip->disk_number_with_cd); |
| /* Number of the disk with the start of the central directory */ |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(zip->stream, (uint16_t)zip->disk_number_with_cd); |
| /* Total number of entries in the central dir on this disk */ |
| if (err == MZ_OK) { |
| if (zip->number_entry >= UINT16_MAX) |
| err = mz_stream_write_uint16(zip->stream, UINT16_MAX); |
| else |
| err = mz_stream_write_uint16(zip->stream, (uint16_t)zip->number_entry); |
| } |
| /* Total number of entries in the central dir */ |
| if (err == MZ_OK) { |
| if (zip->number_entry >= UINT16_MAX) |
| err = mz_stream_write_uint16(zip->stream, UINT16_MAX); |
| else |
| err = mz_stream_write_uint16(zip->stream, (uint16_t)zip->number_entry); |
| } |
| /* Size of the central directory */ |
| if (err == MZ_OK) |
| err = mz_stream_write_uint32(zip->stream, (uint32_t)zip->cd_size); |
| /* Offset of start of central directory with respect to the starting disk number */ |
| if (err == MZ_OK) { |
| if (zip->cd_offset >= UINT32_MAX) |
| err = mz_stream_write_uint32(zip->stream, UINT32_MAX); |
| else |
| err = mz_stream_write_uint32(zip->stream, (uint32_t)zip->cd_offset); |
| } |
| |
| /* Write global comment */ |
| if (zip->comment) { |
| comment_size = (int32_t)strlen(zip->comment); |
| if (comment_size > UINT16_MAX) |
| comment_size = UINT16_MAX; |
| } |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(zip->stream, (uint16_t)comment_size); |
| if (err == MZ_OK) { |
| if (mz_stream_write(zip->stream, zip->comment, comment_size) != comment_size) |
| err = MZ_READ_ERROR; |
| } |
| return err; |
| } |
| |
| static int32_t mz_zip_recover_cd(void *handle) { |
| mz_zip *zip = (mz_zip *)handle; |
| mz_zip_file local_file_info; |
| void *local_file_info_stream = NULL; |
| void *cd_mem_stream = NULL; |
| uint64_t number_entry = 0; |
| int64_t descriptor_pos = 0; |
| int64_t next_header_pos = 0; |
| int64_t disk_offset = 0; |
| int64_t disk_number = 0; |
| int64_t compressed_pos = 0; |
| int64_t compressed_end_pos = 0; |
| int64_t compressed_size = 0; |
| int64_t uncompressed_size = 0; |
| uint8_t descriptor_magic[4] = MZ_ZIP_MAGIC_DATADESCRIPTORU8; |
| uint8_t local_header_magic[4] = MZ_ZIP_MAGIC_LOCALHEADERU8; |
| uint8_t central_header_magic[4] = MZ_ZIP_MAGIC_CENTRALHEADERU8; |
| uint32_t crc32 = 0; |
| int32_t disk_number_with_cd = 0; |
| int32_t err = MZ_OK; |
| uint8_t zip64 = 0; |
| uint8_t eof = 0; |
| |
| mz_zip_print("Zip - Recover - Start\n"); |
| |
| mz_zip_get_cd_mem_stream(handle, &cd_mem_stream); |
| |
| /* Determine if we are on a split disk or not */ |
| mz_stream_set_prop_int64(zip->stream, MZ_STREAM_PROP_DISK_NUMBER, 0); |
| if (mz_stream_tell(zip->stream) < 0) { |
| mz_stream_set_prop_int64(zip->stream, MZ_STREAM_PROP_DISK_NUMBER, -1); |
| mz_stream_seek(zip->stream, 0, MZ_SEEK_SET); |
| } else |
| disk_number_with_cd = 1; |
| |
| if (mz_stream_is_open(cd_mem_stream) != MZ_OK) |
| err = mz_stream_mem_open(cd_mem_stream, NULL, MZ_OPEN_MODE_CREATE); |
| |
| mz_stream_mem_create(&local_file_info_stream); |
| mz_stream_mem_open(local_file_info_stream, NULL, MZ_OPEN_MODE_CREATE); |
| |
| if (err == MZ_OK) { |
| err = mz_stream_find(zip->stream, (const void *)local_header_magic, sizeof(local_header_magic), |
| INT64_MAX, &next_header_pos); |
| } |
| |
| while (err == MZ_OK && !eof) { |
| /* Get current offset and disk number for central dir record */ |
| disk_offset = mz_stream_tell(zip->stream); |
| mz_stream_get_prop_int64(zip->stream, MZ_STREAM_PROP_DISK_NUMBER, &disk_number); |
| |
| /* Read local headers */ |
| memset(&local_file_info, 0, sizeof(local_file_info)); |
| err = mz_zip_entry_read_header(zip->stream, 1, &local_file_info, local_file_info_stream); |
| if (err != MZ_OK) |
| break; |
| |
| local_file_info.disk_offset = disk_offset; |
| if (disk_number < 0) |
| disk_number = 0; |
| local_file_info.disk_number = (uint32_t)disk_number; |
| |
| compressed_pos = mz_stream_tell(zip->stream); |
| |
| if ((err == MZ_OK) && (local_file_info.compressed_size > 0)) { |
| mz_stream_seek(zip->stream, local_file_info.compressed_size, MZ_SEEK_CUR); |
| } |
| |
| for (;;) { |
| /* Search for the next local header */ |
| err = mz_stream_find(zip->stream, (const void *)local_header_magic, sizeof(local_header_magic), |
| INT64_MAX, &next_header_pos); |
| |
| if (err == MZ_EXIST_ERROR) { |
| mz_stream_seek(zip->stream, compressed_pos, MZ_SEEK_SET); |
| |
| /* Search for central dir if no local header found */ |
| err = mz_stream_find(zip->stream, (const void *)central_header_magic, sizeof(central_header_magic), |
| INT64_MAX, &next_header_pos); |
| |
| if (err == MZ_EXIST_ERROR) { |
| /* Get end of stream if no central header found */ |
| mz_stream_seek(zip->stream, 0, MZ_SEEK_END); |
| next_header_pos = mz_stream_tell(zip->stream); |
| } |
| |
| eof = 1; |
| } |
| |
| if (local_file_info.flag & MZ_ZIP_FLAG_DATA_DESCRIPTOR || local_file_info.compressed_size == 0) { |
| /* Search backwards for the descriptor, seeking too far back will be incorrect if compressed size is small */ |
| err = mz_stream_find_reverse(zip->stream, (const void *)descriptor_magic, sizeof(descriptor_magic), |
| MZ_ZIP_SIZE_MAX_DATA_DESCRIPTOR, &descriptor_pos); |
| if (err == MZ_OK) { |
| if (mz_zip_extrafield_contains(local_file_info.extrafield, |
| local_file_info.extrafield_size, MZ_ZIP_EXTENSION_ZIP64, NULL) == MZ_OK) |
| zip64 = 1; |
| |
| err = mz_zip_entry_read_descriptor(zip->stream, zip64, &crc32, |
| &compressed_size, &uncompressed_size); |
| |
| if (err == MZ_OK) { |
| if (local_file_info.crc == 0) |
| local_file_info.crc = crc32; |
| if (local_file_info.compressed_size == 0) |
| local_file_info.compressed_size = compressed_size; |
| if (local_file_info.uncompressed_size == 0) |
| local_file_info.uncompressed_size = uncompressed_size; |
| } |
| |
| compressed_end_pos = descriptor_pos; |
| } else if (eof) { |
| compressed_end_pos = next_header_pos; |
| } else if (local_file_info.flag & MZ_ZIP_FLAG_DATA_DESCRIPTOR) { |
| /* Wrong local file entry found, keep searching */ |
| next_header_pos += 1; |
| mz_stream_seek(zip->stream, next_header_pos, MZ_SEEK_SET); |
| continue; |
| } |
| } else { |
| compressed_end_pos = next_header_pos; |
| } |
| |
| break; |
| } |
| |
| compressed_size = compressed_end_pos - compressed_pos; |
| |
| if (compressed_size > UINT32_MAX) { |
| /* Update sizes if 4GB file is written with no ZIP64 support */ |
| if (local_file_info.uncompressed_size < UINT32_MAX) { |
| local_file_info.compressed_size = compressed_size; |
| local_file_info.uncompressed_size = 0; |
| } |
| } |
| |
| mz_zip_print("Zip - Recover - Entry %s (csize %" PRId64 " usize %" PRId64 " flags 0x%" PRIx16 ")\n", |
| local_file_info.filename, local_file_info.compressed_size, local_file_info.uncompressed_size, |
| local_file_info.flag); |
| |
| /* Rewrite central dir with local headers and offsets */ |
| err = mz_zip_entry_write_header(cd_mem_stream, 0, &local_file_info); |
| if (err == MZ_OK) |
| number_entry += 1; |
| |
| err = mz_stream_seek(zip->stream, next_header_pos, MZ_SEEK_SET); |
| } |
| |
| mz_stream_mem_delete(&local_file_info_stream); |
| |
| mz_zip_print("Zip - Recover - Complete (cddisk %" PRId32 " entries %" PRId64 ")\n", |
| disk_number_with_cd, number_entry); |
| |
| if (number_entry == 0) |
| return err; |
| |
| /* Set new upper seek boundary for central dir mem stream */ |
| disk_offset = mz_stream_tell(cd_mem_stream); |
| mz_stream_mem_set_buffer_limit(cd_mem_stream, (int32_t)disk_offset); |
| |
| /* Set new central directory info */ |
| mz_zip_set_cd_stream(handle, 0, cd_mem_stream); |
| mz_zip_set_number_entry(handle, number_entry); |
| mz_zip_set_disk_number_with_cd(handle, disk_number_with_cd); |
| |
| return MZ_OK; |
| } |
| |
| void *mz_zip_create(void **handle) { |
| mz_zip *zip = NULL; |
| |
| zip = (mz_zip *)calloc(1, sizeof(mz_zip)); |
| if (zip) |
| zip->data_descriptor = 1; |
| if (handle) |
| *handle = zip; |
| |
| return zip; |
| } |
| |
| void mz_zip_delete(void **handle) { |
| mz_zip *zip = NULL; |
| if (!handle) |
| return; |
| zip = (mz_zip *)*handle; |
| if (zip) { |
| free(zip); |
| } |
| *handle = NULL; |
| } |
| |
| int32_t mz_zip_open(void *handle, void *stream, int32_t mode) { |
| mz_zip *zip = (mz_zip *)handle; |
| int32_t err = MZ_OK; |
| |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| |
| mz_zip_print("Zip - Open\n"); |
| |
| zip->stream = stream; |
| |
| mz_stream_mem_create(&zip->cd_mem_stream); |
| |
| if (mode & MZ_OPEN_MODE_WRITE) { |
| mz_stream_mem_open(zip->cd_mem_stream, NULL, MZ_OPEN_MODE_CREATE); |
| zip->cd_stream = zip->cd_mem_stream; |
| } else { |
| zip->cd_stream = stream; |
| } |
| |
| if ((mode & MZ_OPEN_MODE_READ) || (mode & MZ_OPEN_MODE_APPEND)) { |
| if ((mode & MZ_OPEN_MODE_CREATE) == 0) { |
| err = mz_zip_read_cd(zip); |
| if (err != MZ_OK) { |
| mz_zip_print("Zip - Error detected reading cd (%" PRId32 ")\n", err); |
| if (zip->recover && mz_zip_recover_cd(zip) == MZ_OK) |
| err = MZ_OK; |
| } |
| } |
| |
| if ((err == MZ_OK) && (mode & MZ_OPEN_MODE_APPEND)) { |
| if (zip->cd_size > 0) { |
| /* Store central directory in memory */ |
| err = mz_stream_seek(zip->stream, zip->cd_offset, MZ_SEEK_SET); |
| if (err == MZ_OK) |
| err = mz_stream_copy(zip->cd_mem_stream, zip->stream, (int32_t)zip->cd_size); |
| if (err == MZ_OK) |
| err = mz_stream_seek(zip->stream, zip->cd_offset, MZ_SEEK_SET); |
| } else { |
| if (zip->cd_signature == MZ_ZIP_MAGIC_ENDHEADER) { |
| /* If tiny zip then overwrite end header */ |
| err = mz_stream_seek(zip->stream, zip->cd_offset, MZ_SEEK_SET); |
| } else { |
| /* If no central directory, append new zip to end of file */ |
| err = mz_stream_seek(zip->stream, 0, MZ_SEEK_END); |
| } |
| } |
| |
| if (zip->disk_number_with_cd > 0) { |
| /* Move to last disk to begin appending */ |
| mz_stream_set_prop_int64(zip->stream, MZ_STREAM_PROP_DISK_NUMBER, zip->disk_number_with_cd - 1); |
| } |
| } else { |
| zip->cd_start_pos = zip->cd_offset; |
| } |
| } |
| |
| if (err != MZ_OK) { |
| mz_zip_close(zip); |
| return err; |
| } |
| |
| /* Memory streams used to store variable length file info data */ |
| mz_stream_mem_create(&zip->file_info_stream); |
| mz_stream_mem_open(zip->file_info_stream, NULL, MZ_OPEN_MODE_CREATE); |
| |
| mz_stream_mem_create(&zip->local_file_info_stream); |
| mz_stream_mem_open(zip->local_file_info_stream, NULL, MZ_OPEN_MODE_CREATE); |
| |
| zip->open_mode = mode; |
| |
| return err; |
| } |
| |
| int32_t mz_zip_close(void *handle) { |
| mz_zip *zip = (mz_zip *)handle; |
| int32_t err = MZ_OK; |
| |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| |
| mz_zip_print("Zip - Close\n"); |
| |
| if (mz_zip_entry_is_open(handle) == MZ_OK) |
| err = mz_zip_entry_close(handle); |
| |
| if ((err == MZ_OK) && (zip->open_mode & MZ_OPEN_MODE_WRITE)) |
| err = mz_zip_write_cd(handle); |
| |
| if (zip->cd_mem_stream) { |
| mz_stream_close(zip->cd_mem_stream); |
| mz_stream_delete(&zip->cd_mem_stream); |
| } |
| |
| if (zip->file_info_stream) { |
| mz_stream_mem_close(zip->file_info_stream); |
| mz_stream_mem_delete(&zip->file_info_stream); |
| } |
| if (zip->local_file_info_stream) { |
| mz_stream_mem_close(zip->local_file_info_stream); |
| mz_stream_mem_delete(&zip->local_file_info_stream); |
| } |
| |
| if (zip->comment) { |
| free(zip->comment); |
| zip->comment = NULL; |
| } |
| |
| zip->stream = NULL; |
| zip->cd_stream = NULL; |
| |
| return err; |
| } |
| |
| int32_t mz_zip_get_comment(void *handle, const char **comment) { |
| mz_zip *zip = (mz_zip *)handle; |
| if (!zip || !comment) |
| return MZ_PARAM_ERROR; |
| if (!zip->comment) |
| return MZ_EXIST_ERROR; |
| *comment = zip->comment; |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_set_comment(void *handle, const char *comment) { |
| mz_zip *zip = (mz_zip *)handle; |
| int32_t comment_size = 0; |
| if (!zip || !comment) |
| return MZ_PARAM_ERROR; |
| if (zip->comment) |
| free(zip->comment); |
| comment_size = (int32_t)strlen(comment); |
| if (comment_size > UINT16_MAX) |
| return MZ_PARAM_ERROR; |
| zip->comment = (char *)calloc(comment_size + 1, sizeof(char)); |
| if (!zip->comment) |
| return MZ_MEM_ERROR; |
| strncpy(zip->comment, comment, comment_size); |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_get_version_madeby(void *handle, uint16_t *version_madeby) { |
| mz_zip *zip = (mz_zip *)handle; |
| if (!zip || !version_madeby) |
| return MZ_PARAM_ERROR; |
| *version_madeby = zip->version_madeby; |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_set_version_madeby(void *handle, uint16_t version_madeby) { |
| mz_zip *zip = (mz_zip *)handle; |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| zip->version_madeby = version_madeby; |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_set_recover(void *handle, uint8_t recover) { |
| mz_zip *zip = (mz_zip *)handle; |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| zip->recover = recover; |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_set_data_descriptor(void *handle, uint8_t data_descriptor) { |
| mz_zip *zip = (mz_zip *)handle; |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| zip->data_descriptor = data_descriptor; |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_get_stream(void *handle, void **stream) { |
| mz_zip *zip = (mz_zip *)handle; |
| if (!zip || !stream) |
| return MZ_PARAM_ERROR; |
| *stream = zip->stream; |
| if (!*stream) |
| return MZ_EXIST_ERROR; |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_set_cd_stream(void *handle, int64_t cd_start_pos, void *cd_stream) { |
| mz_zip *zip = (mz_zip *)handle; |
| if (!zip || !cd_stream) |
| return MZ_PARAM_ERROR; |
| zip->cd_offset = 0; |
| zip->cd_stream = cd_stream; |
| zip->cd_start_pos = cd_start_pos; |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_get_cd_mem_stream(void *handle, void **cd_mem_stream) { |
| mz_zip *zip = (mz_zip *)handle; |
| if (!zip || !cd_mem_stream) |
| return MZ_PARAM_ERROR; |
| *cd_mem_stream = zip->cd_mem_stream; |
| if (!*cd_mem_stream) |
| return MZ_EXIST_ERROR; |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_set_number_entry(void *handle, uint64_t number_entry) { |
| mz_zip *zip = (mz_zip *)handle; |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| zip->number_entry = number_entry; |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_get_number_entry(void *handle, uint64_t *number_entry) { |
| mz_zip *zip = (mz_zip *)handle; |
| if (!zip || !number_entry) |
| return MZ_PARAM_ERROR; |
| *number_entry = zip->number_entry; |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_set_disk_number_with_cd(void *handle, uint32_t disk_number_with_cd) { |
| mz_zip *zip = (mz_zip *)handle; |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| zip->disk_number_with_cd = disk_number_with_cd; |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_get_disk_number_with_cd(void *handle, uint32_t *disk_number_with_cd) { |
| mz_zip *zip = (mz_zip *)handle; |
| if (!zip || !disk_number_with_cd) |
| return MZ_PARAM_ERROR; |
| *disk_number_with_cd = zip->disk_number_with_cd; |
| return MZ_OK; |
| } |
| |
| static int32_t mz_zip_entry_close_int(void *handle) { |
| mz_zip *zip = (mz_zip *)handle; |
| |
| if (zip->crypt_stream) |
| mz_stream_delete(&zip->crypt_stream); |
| zip->crypt_stream = NULL; |
| if (zip->compress_stream) |
| mz_stream_delete(&zip->compress_stream); |
| zip->compress_stream = NULL; |
| |
| zip->entry_opened = 0; |
| |
| return MZ_OK; |
| } |
| |
| static int32_t mz_zip_entry_open_int(void *handle, uint8_t raw, int16_t compress_level, const char *password) { |
| mz_zip *zip = (mz_zip *)handle; |
| int64_t max_total_in = 0; |
| int64_t header_size = 0; |
| int64_t footer_size = 0; |
| int32_t err = MZ_OK; |
| uint8_t use_crypt = 0; |
| |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| |
| switch (zip->file_info.compression_method) { |
| case MZ_COMPRESS_METHOD_STORE: |
| case MZ_COMPRESS_METHOD_DEFLATE: |
| #ifdef HAVE_BZIP2 |
| case MZ_COMPRESS_METHOD_BZIP2: |
| #endif |
| #ifdef HAVE_LZMA |
| case MZ_COMPRESS_METHOD_LZMA: |
| #endif |
| #if defined(HAVE_LZMA) || defined(HAVE_LIBCOMP) |
| case MZ_COMPRESS_METHOD_XZ: |
| #endif |
| #ifdef HAVE_ZSTD |
| case MZ_COMPRESS_METHOD_ZSTD: |
| #endif |
| err = MZ_OK; |
| break; |
| default: |
| return MZ_SUPPORT_ERROR; |
| } |
| |
| #ifndef HAVE_WZAES |
| if (zip->file_info.aes_version) |
| return MZ_SUPPORT_ERROR; |
| #endif |
| |
| zip->entry_raw = raw; |
| |
| if ((zip->file_info.flag & MZ_ZIP_FLAG_ENCRYPTED) && (password)) { |
| if (zip->open_mode & MZ_OPEN_MODE_WRITE) { |
| /* Encrypt only when we are not trying to write raw and password is supplied. */ |
| if (!zip->entry_raw) |
| use_crypt = 1; |
| } else if (zip->open_mode & MZ_OPEN_MODE_READ) { |
| /* Decrypt only when password is supplied. Don't error when password */ |
| /* is not supplied as we may want to read the raw encrypted data. */ |
| use_crypt = 1; |
| } |
| } |
| |
| if ((err == MZ_OK) && (use_crypt)) { |
| #ifdef HAVE_WZAES |
| if (zip->file_info.aes_version) { |
| mz_stream_wzaes_create(&zip->crypt_stream); |
| mz_stream_wzaes_set_password(zip->crypt_stream, password); |
| mz_stream_wzaes_set_encryption_mode(zip->crypt_stream, zip->file_info.aes_encryption_mode); |
| } else |
| #endif |
| { |
| #ifdef HAVE_PKCRYPT |
| uint8_t verify1 = (uint8_t)((zip->file_info.pk_verify >> 8) & 0xff); |
| uint8_t verify2 = (uint8_t)((zip->file_info.pk_verify) & 0xff); |
| |
| mz_stream_pkcrypt_create(&zip->crypt_stream); |
| mz_stream_pkcrypt_set_password(zip->crypt_stream, password); |
| mz_stream_pkcrypt_set_verify(zip->crypt_stream, verify1, verify2); |
| #endif |
| } |
| } |
| |
| if (err == MZ_OK) { |
| if (!zip->crypt_stream) |
| mz_stream_raw_create(&zip->crypt_stream); |
| |
| mz_stream_set_base(zip->crypt_stream, zip->stream); |
| |
| err = mz_stream_open(zip->crypt_stream, NULL, zip->open_mode); |
| } |
| |
| if (err == MZ_OK) { |
| if (zip->entry_raw || zip->file_info.compression_method == MZ_COMPRESS_METHOD_STORE) |
| mz_stream_raw_create(&zip->compress_stream); |
| #ifdef HAVE_ZLIB |
| else if (zip->file_info.compression_method == MZ_COMPRESS_METHOD_DEFLATE) |
| mz_stream_zlib_create(&zip->compress_stream); |
| #endif |
| #ifdef HAVE_BZIP2 |
| else if (zip->file_info.compression_method == MZ_COMPRESS_METHOD_BZIP2) |
| mz_stream_bzip_create(&zip->compress_stream); |
| #endif |
| #ifdef HAVE_LIBCOMP |
| else if (zip->file_info.compression_method == MZ_COMPRESS_METHOD_DEFLATE || |
| zip->file_info.compression_method == MZ_COMPRESS_METHOD_XZ) { |
| mz_stream_libcomp_create(&zip->compress_stream); |
| mz_stream_set_prop_int64(zip->compress_stream, MZ_STREAM_PROP_COMPRESS_METHOD, |
| zip->file_info.compression_method); |
| } |
| #endif |
| #ifdef HAVE_LZMA |
| else if (zip->file_info.compression_method == MZ_COMPRESS_METHOD_LZMA || |
| zip->file_info.compression_method == MZ_COMPRESS_METHOD_XZ) { |
| mz_stream_lzma_create(&zip->compress_stream); |
| mz_stream_set_prop_int64(zip->compress_stream, MZ_STREAM_PROP_COMPRESS_METHOD, |
| zip->file_info.compression_method); |
| } |
| #endif |
| #ifdef HAVE_ZSTD |
| else if (zip->file_info.compression_method == MZ_COMPRESS_METHOD_ZSTD) |
| mz_stream_zstd_create(&zip->compress_stream); |
| #endif |
| else |
| err = MZ_PARAM_ERROR; |
| } |
| |
| if (err == MZ_OK) { |
| if (zip->open_mode & MZ_OPEN_MODE_WRITE) { |
| mz_stream_set_prop_int64(zip->compress_stream, MZ_STREAM_PROP_COMPRESS_LEVEL, compress_level); |
| } else { |
| int32_t set_end_of_stream = 0; |
| |
| #ifndef HAVE_LIBCOMP |
| if (zip->entry_raw || |
| zip->file_info.compression_method == MZ_COMPRESS_METHOD_STORE || |
| zip->file_info.flag & MZ_ZIP_FLAG_ENCRYPTED) |
| #endif |
| { |
| max_total_in = zip->file_info.compressed_size; |
| mz_stream_set_prop_int64(zip->crypt_stream, MZ_STREAM_PROP_TOTAL_IN_MAX, max_total_in); |
| |
| if (mz_stream_get_prop_int64(zip->crypt_stream, MZ_STREAM_PROP_HEADER_SIZE, &header_size) == MZ_OK) |
| max_total_in -= header_size; |
| if (mz_stream_get_prop_int64(zip->crypt_stream, MZ_STREAM_PROP_FOOTER_SIZE, &footer_size) == MZ_OK) |
| max_total_in -= footer_size; |
| |
| mz_stream_set_prop_int64(zip->compress_stream, MZ_STREAM_PROP_TOTAL_IN_MAX, max_total_in); |
| } |
| |
| switch (zip->file_info.compression_method) { |
| case MZ_COMPRESS_METHOD_LZMA: |
| case MZ_COMPRESS_METHOD_XZ: |
| set_end_of_stream = (zip->file_info.flag & MZ_ZIP_FLAG_LZMA_EOS_MARKER); |
| break; |
| case MZ_COMPRESS_METHOD_ZSTD: |
| set_end_of_stream = 1; |
| break; |
| } |
| |
| if (set_end_of_stream) { |
| mz_stream_set_prop_int64(zip->compress_stream, MZ_STREAM_PROP_TOTAL_IN_MAX, zip->file_info.compressed_size); |
| mz_stream_set_prop_int64(zip->compress_stream, MZ_STREAM_PROP_TOTAL_OUT_MAX, zip->file_info.uncompressed_size); |
| } |
| } |
| |
| mz_stream_set_base(zip->compress_stream, zip->crypt_stream); |
| |
| err = mz_stream_open(zip->compress_stream, NULL, zip->open_mode); |
| } |
| |
| if (err == MZ_OK) { |
| zip->entry_opened = 1; |
| zip->entry_crc32 = 0; |
| } else { |
| mz_zip_entry_close_int(handle); |
| } |
| |
| return err; |
| } |
| |
| int32_t mz_zip_entry_is_open(void *handle) { |
| mz_zip *zip = (mz_zip *)handle; |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| if (zip->entry_opened == 0) |
| return MZ_EXIST_ERROR; |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_entry_read_open(void *handle, uint8_t raw, const char *password) { |
| mz_zip *zip = (mz_zip *)handle; |
| int32_t err = MZ_OK; |
| int32_t err_shift = MZ_OK; |
| |
| #if defined(MZ_ZIP_NO_ENCRYPTION) |
| if (password) |
| return MZ_SUPPORT_ERROR; |
| #endif |
| if (!zip || !zip->entry_scanned) |
| return MZ_PARAM_ERROR; |
| if ((zip->open_mode & MZ_OPEN_MODE_READ) == 0) |
| return MZ_PARAM_ERROR; |
| |
| mz_zip_print("Zip - Entry - Read open (raw %" PRId32 ")\n", raw); |
| |
| err = mz_zip_entry_seek_local_header(handle); |
| if (err == MZ_OK) |
| err = mz_zip_entry_read_header(zip->stream, 1, &zip->local_file_info, zip->local_file_info_stream); |
| |
| if (err == MZ_FORMAT_ERROR && zip->disk_offset_shift > 0) { |
| /* Perhaps we didn't compensated correctly for incorrect cd offset */ |
| err_shift = mz_stream_seek(zip->stream, zip->file_info.disk_offset, MZ_SEEK_SET); |
| if (err_shift == MZ_OK) |
| err_shift = mz_zip_entry_read_header(zip->stream, 1, &zip->local_file_info, zip->local_file_info_stream); |
| if (err_shift == MZ_OK) { |
| zip->disk_offset_shift = 0; |
| err = err_shift; |
| } |
| } |
| |
| #ifdef MZ_ZIP_NO_DECOMPRESSION |
| if (!raw && zip->file_info.compression_method != MZ_COMPRESS_METHOD_STORE) |
| err = MZ_SUPPORT_ERROR; |
| #endif |
| if (err == MZ_OK) |
| err = mz_zip_entry_open_int(handle, raw, 0, password); |
| |
| return err; |
| } |
| |
| int32_t mz_zip_entry_write_open(void *handle, const mz_zip_file *file_info, int16_t compress_level, uint8_t raw, const char *password) { |
| mz_zip *zip = (mz_zip *)handle; |
| int64_t filename_pos = -1; |
| int64_t extrafield_pos = 0; |
| int64_t comment_pos = 0; |
| int64_t linkname_pos = 0; |
| int64_t disk_number = 0; |
| uint8_t is_dir = 0; |
| int32_t err = MZ_OK; |
| |
| #if defined(MZ_ZIP_NO_ENCRYPTION) |
| if (password) |
| return MZ_SUPPORT_ERROR; |
| #endif |
| if (!zip || !file_info || !file_info->filename) |
| return MZ_PARAM_ERROR; |
| |
| if (mz_zip_entry_is_open(handle) == MZ_OK) { |
| err = mz_zip_entry_close(handle); |
| if (err != MZ_OK) |
| return err; |
| } |
| |
| memcpy(&zip->file_info, file_info, sizeof(mz_zip_file)); |
| |
| mz_zip_print("Zip - Entry - Write open - %s (level %" PRId16 " raw %" PRId8 ")\n", |
| zip->file_info.filename, compress_level, raw); |
| |
| mz_stream_seek(zip->file_info_stream, 0, MZ_SEEK_SET); |
| mz_stream_write(zip->file_info_stream, file_info, sizeof(mz_zip_file)); |
| |
| /* Copy filename, extrafield, and comment internally */ |
| filename_pos = mz_stream_tell(zip->file_info_stream); |
| if (file_info->filename) |
| mz_stream_write(zip->file_info_stream, file_info->filename, (int32_t)strlen(file_info->filename)); |
| mz_stream_write_uint8(zip->file_info_stream, 0); |
| |
| extrafield_pos = mz_stream_tell(zip->file_info_stream); |
| if (file_info->extrafield) |
| mz_stream_write(zip->file_info_stream, file_info->extrafield, file_info->extrafield_size); |
| mz_stream_write_uint8(zip->file_info_stream, 0); |
| |
| comment_pos = mz_stream_tell(zip->file_info_stream); |
| if (file_info->comment) |
| mz_stream_write(zip->file_info_stream, file_info->comment, file_info->comment_size); |
| mz_stream_write_uint8(zip->file_info_stream, 0); |
| |
| linkname_pos = mz_stream_tell(zip->file_info_stream); |
| if (file_info->linkname) |
| mz_stream_write(zip->file_info_stream, file_info->linkname, (int32_t)strlen(file_info->linkname)); |
| mz_stream_write_uint8(zip->file_info_stream, 0); |
| |
| mz_stream_mem_get_buffer_at(zip->file_info_stream, filename_pos, (const void **)&zip->file_info.filename); |
| mz_stream_mem_get_buffer_at(zip->file_info_stream, extrafield_pos, (const void **)&zip->file_info.extrafield); |
| mz_stream_mem_get_buffer_at(zip->file_info_stream, comment_pos, (const void **)&zip->file_info.comment); |
| mz_stream_mem_get_buffer_at(zip->file_info_stream, linkname_pos, (const void **)&zip->file_info.linkname); |
| |
| if (zip->file_info.compression_method == MZ_COMPRESS_METHOD_DEFLATE) { |
| if ((compress_level == 8) || (compress_level == 9)) |
| zip->file_info.flag |= MZ_ZIP_FLAG_DEFLATE_MAX; |
| if (compress_level == 2) |
| zip->file_info.flag |= MZ_ZIP_FLAG_DEFLATE_FAST; |
| if (compress_level == 1) |
| zip->file_info.flag |= MZ_ZIP_FLAG_DEFLATE_SUPER_FAST; |
| } |
| #if defined(HAVE_LZMA) || defined(HAVE_LIBCOMP) |
| else if (zip->file_info.compression_method == MZ_COMPRESS_METHOD_LZMA || |
| zip->file_info.compression_method == MZ_COMPRESS_METHOD_XZ) |
| zip->file_info.flag |= MZ_ZIP_FLAG_LZMA_EOS_MARKER; |
| #endif |
| |
| if (mz_zip_attrib_is_dir(zip->file_info.external_fa, zip->file_info.version_madeby) == MZ_OK) |
| is_dir = 1; |
| |
| if (!is_dir) { |
| if (zip->data_descriptor) |
| zip->file_info.flag |= MZ_ZIP_FLAG_DATA_DESCRIPTOR; |
| if (password) |
| zip->file_info.flag |= MZ_ZIP_FLAG_ENCRYPTED; |
| } |
| |
| mz_stream_get_prop_int64(zip->stream, MZ_STREAM_PROP_DISK_NUMBER, &disk_number); |
| zip->file_info.disk_number = (uint32_t)disk_number; |
| zip->file_info.disk_offset = mz_stream_tell(zip->stream); |
| |
| if (zip->file_info.flag & MZ_ZIP_FLAG_ENCRYPTED) { |
| #ifdef HAVE_PKCRYPT |
| /* Pre-calculated CRC value is required for PKWARE traditional encryption */ |
| uint32_t dos_date = mz_zip_time_t_to_dos_date(zip->file_info.modified_date); |
| zip->file_info.pk_verify = mz_zip_get_pk_verify(dos_date, zip->file_info.crc, zip->file_info.flag); |
| #endif |
| #ifdef HAVE_WZAES |
| if (zip->file_info.aes_version && zip->file_info.aes_encryption_mode == 0) |
| zip->file_info.aes_encryption_mode = MZ_AES_ENCRYPTION_MODE_256; |
| #endif |
| } |
| |
| zip->file_info.crc = 0; |
| zip->file_info.compressed_size = 0; |
| |
| if ((compress_level == 0) || (is_dir)) |
| zip->file_info.compression_method = MZ_COMPRESS_METHOD_STORE; |
| |
| #ifdef MZ_ZIP_NO_COMPRESSION |
| if (zip->file_info.compression_method != MZ_COMPRESS_METHOD_STORE) |
| err = MZ_SUPPORT_ERROR; |
| #endif |
| if (err == MZ_OK) |
| err = mz_zip_entry_write_header(zip->stream, 1, &zip->file_info); |
| if (err == MZ_OK) |
| err = mz_zip_entry_open_int(handle, raw, compress_level, password); |
| |
| return err; |
| } |
| |
| int32_t mz_zip_entry_read(void *handle, void *buf, int32_t len) { |
| mz_zip *zip = (mz_zip *)handle; |
| int32_t read = 0; |
| |
| if (!zip || mz_zip_entry_is_open(handle) != MZ_OK) |
| return MZ_PARAM_ERROR; |
| if (UINT_MAX == UINT16_MAX && len > UINT16_MAX) /* zlib limitation */ |
| return MZ_PARAM_ERROR; |
| if (len == 0) |
| return MZ_PARAM_ERROR; |
| |
| if (zip->file_info.compressed_size == 0) |
| return 0; |
| |
| /* Read entire entry even if uncompressed_size = 0, otherwise */ |
| /* aes encryption validation will fail if compressed_size > 0 */ |
| read = mz_stream_read(zip->compress_stream, buf, len); |
| if (read > 0) |
| zip->entry_crc32 = mz_crypt_crc32_update(zip->entry_crc32, buf, read); |
| |
| mz_zip_print("Zip - Entry - Read - %" PRId32 " (max %" PRId32 ")\n", read, len); |
| |
| return read; |
| } |
| |
| int32_t mz_zip_entry_write(void *handle, const void *buf, int32_t len) { |
| mz_zip *zip = (mz_zip *)handle; |
| int32_t written = 0; |
| |
| if (!zip || mz_zip_entry_is_open(handle) != MZ_OK) |
| return MZ_PARAM_ERROR; |
| written = mz_stream_write(zip->compress_stream, buf, len); |
| if (written > 0) |
| zip->entry_crc32 = mz_crypt_crc32_update(zip->entry_crc32, buf, written); |
| |
| mz_zip_print("Zip - Entry - Write - %" PRId32 " (max %" PRId32 ")\n", written, len); |
| |
| return written; |
| } |
| |
| int32_t mz_zip_entry_read_close(void *handle, uint32_t *crc32, int64_t *compressed_size, |
| int64_t *uncompressed_size) { |
| mz_zip *zip = (mz_zip *)handle; |
| int64_t total_in = 0; |
| int32_t err = MZ_OK; |
| uint8_t zip64 = 0; |
| |
| if (!zip || mz_zip_entry_is_open(handle) != MZ_OK) |
| return MZ_PARAM_ERROR; |
| |
| mz_stream_close(zip->compress_stream); |
| |
| mz_zip_print("Zip - Entry - Read Close\n"); |
| |
| if (crc32) |
| *crc32 = zip->file_info.crc; |
| if (compressed_size) |
| *compressed_size = zip->file_info.compressed_size; |
| if (uncompressed_size) |
| *uncompressed_size = zip->file_info.uncompressed_size; |
| |
| mz_stream_get_prop_int64(zip->compress_stream, MZ_STREAM_PROP_TOTAL_IN, &total_in); |
| |
| if ((zip->file_info.flag & MZ_ZIP_FLAG_DATA_DESCRIPTOR) && |
| ((zip->file_info.flag & MZ_ZIP_FLAG_MASK_LOCAL_INFO) == 0) && |
| (crc32 || compressed_size || uncompressed_size)) { |
| /* Check to see if data descriptor is zip64 bit format or not */ |
| if (mz_zip_extrafield_contains(zip->local_file_info.extrafield, |
| zip->local_file_info.extrafield_size, MZ_ZIP_EXTENSION_ZIP64, NULL) == MZ_OK) |
| zip64 = 1; |
| |
| err = mz_zip_entry_seek_local_header(handle); |
| |
| /* Seek to end of compressed stream since we might have over-read during compression */ |
| if (err == MZ_OK) |
| err = mz_stream_seek(zip->stream, MZ_ZIP_SIZE_LD_ITEM + |
| (int64_t)zip->local_file_info.filename_size + |
| (int64_t)zip->local_file_info.extrafield_size + |
| total_in, MZ_SEEK_CUR); |
| |
| /* Read data descriptor */ |
| if (err == MZ_OK) |
| err = mz_zip_entry_read_descriptor(zip->stream, zip64, |
| crc32, compressed_size, uncompressed_size); |
| } |
| |
| /* If entire entry was not read verification will fail */ |
| if ((err == MZ_OK) && (total_in == zip->file_info.compressed_size) && (!zip->entry_raw)) { |
| #ifdef HAVE_WZAES |
| /* AES zip version AE-1 will expect a valid crc as well */ |
| if (zip->file_info.aes_version <= 0x0001) |
| #endif |
| { |
| if (zip->entry_crc32 != zip->file_info.crc) { |
| mz_zip_print("Zip - Entry - Crc failed (actual 0x%08" PRIx32 " expected 0x%08" PRIx32 ")\n", |
| zip->entry_crc32, zip->file_info.crc); |
| |
| err = MZ_CRC_ERROR; |
| } |
| } |
| } |
| |
| mz_zip_entry_close_int(handle); |
| |
| return err; |
| } |
| |
| int32_t mz_zip_entry_write_close(void *handle, uint32_t crc32, int64_t compressed_size, |
| int64_t uncompressed_size) { |
| mz_zip *zip = (mz_zip *)handle; |
| int64_t end_disk_number = 0; |
| int32_t err = MZ_OK; |
| uint8_t zip64 = 0; |
| |
| if (!zip || mz_zip_entry_is_open(handle) != MZ_OK) |
| return MZ_PARAM_ERROR; |
| |
| mz_stream_close(zip->compress_stream); |
| |
| if (!zip->entry_raw) |
| crc32 = zip->entry_crc32; |
| |
| mz_zip_print("Zip - Entry - Write Close (crc 0x%08" PRIx32 " cs %" PRId64 " ucs %" PRId64 ")\n", |
| crc32, compressed_size, uncompressed_size); |
| |
| /* If sizes are not set, then read them from the compression stream */ |
| if (compressed_size < 0) |
| mz_stream_get_prop_int64(zip->compress_stream, MZ_STREAM_PROP_TOTAL_OUT, &compressed_size); |
| if (uncompressed_size < 0) |
| mz_stream_get_prop_int64(zip->compress_stream, MZ_STREAM_PROP_TOTAL_IN, &uncompressed_size); |
| |
| if (zip->file_info.flag & MZ_ZIP_FLAG_ENCRYPTED) { |
| mz_stream_set_base(zip->crypt_stream, zip->stream); |
| err = mz_stream_close(zip->crypt_stream); |
| |
| mz_stream_get_prop_int64(zip->crypt_stream, MZ_STREAM_PROP_TOTAL_OUT, &compressed_size); |
| } |
| |
| mz_zip_entry_needs_zip64(&zip->file_info, 1, &zip64); |
| |
| if ((err == MZ_OK) && (zip->file_info.flag & MZ_ZIP_FLAG_DATA_DESCRIPTOR)) { |
| /* Determine if we need to write data descriptor in zip64 format, |
| if local extrafield was saved with zip64 extrafield */ |
| |
| if (zip->file_info.flag & MZ_ZIP_FLAG_MASK_LOCAL_INFO) |
| err = mz_zip_entry_write_descriptor(zip->stream, |
| zip64, 0, compressed_size, 0); |
| else |
| err = mz_zip_entry_write_descriptor(zip->stream, |
| zip64, crc32, compressed_size, uncompressed_size); |
| } |
| |
| /* Write file info to central directory */ |
| |
| mz_zip_print("Zip - Entry - Write cd (ucs %" PRId64 " cs %" PRId64 " crc 0x%08" PRIx32 ")\n", |
| uncompressed_size, compressed_size, crc32); |
| |
| zip->file_info.crc = crc32; |
| zip->file_info.compressed_size = compressed_size; |
| zip->file_info.uncompressed_size = uncompressed_size; |
| |
| if (err == MZ_OK) |
| err = mz_zip_entry_write_header(zip->cd_mem_stream, 0, &zip->file_info); |
| |
| /* Update local header with crc32 and sizes */ |
| if ((err == MZ_OK) && ((zip->file_info.flag & MZ_ZIP_FLAG_DATA_DESCRIPTOR) == 0) && |
| ((zip->file_info.flag & MZ_ZIP_FLAG_MASK_LOCAL_INFO) == 0)) { |
| /* Save the disk number and position we are to seek back after updating local header */ |
| int64_t end_pos = mz_stream_tell(zip->stream); |
| mz_stream_get_prop_int64(zip->stream, MZ_STREAM_PROP_DISK_NUMBER, &end_disk_number); |
| |
| err = mz_zip_entry_seek_local_header(handle); |
| |
| if (err == MZ_OK) { |
| /* Seek to crc32 and sizes offset in local header */ |
| err = mz_stream_set_prop_int64(zip->stream, MZ_STREAM_PROP_DISK_NUMBER, zip->file_info.disk_number); |
| if (err == MZ_OK) |
| err = mz_stream_seek(zip->stream, zip->file_info.disk_offset + MZ_ZIP_OFFSET_CRC_SIZES, MZ_SEEK_SET); |
| } |
| |
| if (err == MZ_OK) |
| err = mz_zip_entry_write_crc_sizes(zip->stream, zip64, 0, &zip->file_info); |
| |
| /* Seek to and update zip64 extension sizes */ |
| if ((err == MZ_OK) && (zip64)) { |
| int64_t filename_size = zip->file_info.filename_size; |
| |
| if (filename_size == 0) |
| filename_size = strlen(zip->file_info.filename); |
| |
| /* Since we write zip64 extension first we know its offset */ |
| err = mz_stream_seek(zip->stream, 2 + 2 + filename_size + 4, MZ_SEEK_CUR); |
| |
| if (err == MZ_OK) |
| err = mz_stream_write_uint64(zip->stream, zip->file_info.uncompressed_size); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint64(zip->stream, zip->file_info.compressed_size); |
| } |
| |
| mz_stream_set_prop_int64(zip->stream, MZ_STREAM_PROP_DISK_NUMBER, end_disk_number); |
| mz_stream_seek(zip->stream, end_pos, MZ_SEEK_SET); |
| } |
| |
| zip->number_entry += 1; |
| |
| mz_zip_entry_close_int(handle); |
| |
| return err; |
| } |
| |
| int32_t mz_zip_entry_seek_local_header(void *handle) { |
| mz_zip *zip = (mz_zip *)handle; |
| int64_t disk_size = 0; |
| uint32_t disk_number = zip->file_info.disk_number; |
| |
| if (disk_number == zip->disk_number_with_cd) { |
| mz_stream_get_prop_int64(zip->stream, MZ_STREAM_PROP_DISK_SIZE, &disk_size); |
| if ((disk_size == 0) || ((zip->open_mode & MZ_OPEN_MODE_WRITE) == 0)) |
| disk_number = (uint32_t)-1; |
| } |
| |
| mz_stream_set_prop_int64(zip->stream, MZ_STREAM_PROP_DISK_NUMBER, disk_number); |
| |
| mz_zip_print("Zip - Entry - Seek local (disk %" PRId32 " offset %" PRId64 ")\n", |
| disk_number, zip->file_info.disk_offset); |
| |
| /* Guard against seek overflows */ |
| if ((zip->disk_offset_shift > 0) && |
| (zip->file_info.disk_offset > (INT64_MAX - zip->disk_offset_shift))) |
| return MZ_FORMAT_ERROR; |
| |
| return mz_stream_seek(zip->stream, zip->file_info.disk_offset + zip->disk_offset_shift, MZ_SEEK_SET); |
| } |
| |
| int32_t mz_zip_entry_get_compress_stream(void *handle, void **compress_stream) { |
| mz_zip *zip = (mz_zip *)handle; |
| if (!zip || !compress_stream) |
| return MZ_PARAM_ERROR; |
| *compress_stream = zip->compress_stream; |
| if (!*compress_stream) |
| return MZ_EXIST_ERROR; |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_entry_close(void *handle) { |
| return mz_zip_entry_close_raw(handle, UINT64_MAX, 0); |
| } |
| |
| int32_t mz_zip_entry_close_raw(void *handle, int64_t uncompressed_size, uint32_t crc32) { |
| mz_zip *zip = (mz_zip *)handle; |
| int32_t err = MZ_OK; |
| |
| if (!zip || mz_zip_entry_is_open(handle) != MZ_OK) |
| return MZ_PARAM_ERROR; |
| |
| if (zip->open_mode & MZ_OPEN_MODE_WRITE) |
| err = mz_zip_entry_write_close(handle, crc32, UINT64_MAX, uncompressed_size); |
| else |
| err = mz_zip_entry_read_close(handle, NULL, NULL, NULL); |
| |
| return err; |
| } |
| |
| int32_t mz_zip_entry_is_dir(void *handle) { |
| mz_zip *zip = (mz_zip *)handle; |
| int32_t filename_length = 0; |
| |
| if (!zip || !zip->entry_scanned) |
| return MZ_PARAM_ERROR; |
| if (mz_zip_attrib_is_dir(zip->file_info.external_fa, zip->file_info.version_madeby) == MZ_OK) |
| return MZ_OK; |
| |
| filename_length = (int32_t)strlen(zip->file_info.filename); |
| if (filename_length > 0) { |
| if ((zip->file_info.filename[filename_length - 1] == '/') || |
| (zip->file_info.filename[filename_length - 1] == '\\')) |
| return MZ_OK; |
| } |
| return MZ_EXIST_ERROR; |
| } |
| |
| int32_t mz_zip_entry_is_symlink(void *handle) { |
| mz_zip *zip = (mz_zip *)handle; |
| |
| if (!zip || !zip->entry_scanned) |
| return MZ_PARAM_ERROR; |
| if (mz_zip_attrib_is_symlink(zip->file_info.external_fa, zip->file_info.version_madeby) != MZ_OK) |
| return MZ_EXIST_ERROR; |
| |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_entry_get_info(void *handle, mz_zip_file **file_info) { |
| mz_zip *zip = (mz_zip *)handle; |
| |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| |
| if ((zip->open_mode & MZ_OPEN_MODE_WRITE) == 0) { |
| if (!zip->entry_scanned) |
| return MZ_PARAM_ERROR; |
| } |
| |
| *file_info = &zip->file_info; |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_entry_get_local_info(void *handle, mz_zip_file **local_file_info) { |
| mz_zip *zip = (mz_zip *)handle; |
| if (!zip || mz_zip_entry_is_open(handle) != MZ_OK) |
| return MZ_PARAM_ERROR; |
| *local_file_info = &zip->local_file_info; |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_entry_set_extrafield(void *handle, const uint8_t *extrafield, uint16_t extrafield_size) { |
| mz_zip *zip = (mz_zip *)handle; |
| |
| if (!zip || mz_zip_entry_is_open(handle) != MZ_OK) |
| return MZ_PARAM_ERROR; |
| |
| zip->file_info.extrafield = extrafield; |
| zip->file_info.extrafield_size = extrafield_size; |
| return MZ_OK; |
| } |
| |
| static int32_t mz_zip_goto_next_entry_int(void *handle) { |
| mz_zip *zip = (mz_zip *)handle; |
| int32_t err = MZ_OK; |
| |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| |
| zip->entry_scanned = 0; |
| |
| mz_stream_set_prop_int64(zip->cd_stream, MZ_STREAM_PROP_DISK_NUMBER, -1); |
| |
| err = mz_stream_seek(zip->cd_stream, zip->cd_current_pos, MZ_SEEK_SET); |
| if (err == MZ_OK) |
| err = mz_zip_entry_read_header(zip->cd_stream, 0, &zip->file_info, zip->file_info_stream); |
| if (err == MZ_OK) |
| zip->entry_scanned = 1; |
| return err; |
| } |
| |
| int64_t mz_zip_get_entry(void *handle) { |
| mz_zip *zip = (mz_zip *)handle; |
| |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| |
| return zip->cd_current_pos; |
| } |
| |
| int32_t mz_zip_goto_entry(void *handle, int64_t cd_pos) { |
| mz_zip *zip = (mz_zip *)handle; |
| |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| |
| if (cd_pos < zip->cd_start_pos || cd_pos > zip->cd_start_pos + zip->cd_size) |
| return MZ_PARAM_ERROR; |
| |
| zip->cd_current_pos = cd_pos; |
| |
| return mz_zip_goto_next_entry_int(handle); |
| } |
| |
| int32_t mz_zip_goto_first_entry(void *handle) { |
| mz_zip *zip = (mz_zip *)handle; |
| |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| |
| zip->cd_current_pos = zip->cd_start_pos; |
| |
| return mz_zip_goto_next_entry_int(handle); |
| } |
| |
| int32_t mz_zip_goto_next_entry(void *handle) { |
| mz_zip *zip = (mz_zip *)handle; |
| |
| if (!zip) |
| return MZ_PARAM_ERROR; |
| |
| zip->cd_current_pos += (int64_t)MZ_ZIP_SIZE_CD_ITEM + zip->file_info.filename_size + |
| zip->file_info.extrafield_size + zip->file_info.comment_size; |
| |
| return mz_zip_goto_next_entry_int(handle); |
| } |
| |
| int32_t mz_zip_locate_entry(void *handle, const char *filename, uint8_t ignore_case) { |
| mz_zip *zip = (mz_zip *)handle; |
| int32_t err = MZ_OK; |
| int32_t result = 0; |
| |
| if (!zip || !filename) |
| return MZ_PARAM_ERROR; |
| |
| /* If we are already on the current entry, no need to search */ |
| if (zip->entry_scanned && zip->file_info.filename) { |
| result = mz_zip_path_compare(zip->file_info.filename, filename, ignore_case); |
| if (result == 0) |
| return MZ_OK; |
| } |
| |
| /* Search all entries starting at the first */ |
| err = mz_zip_goto_first_entry(handle); |
| while (err == MZ_OK) { |
| result = mz_zip_path_compare(zip->file_info.filename, filename, ignore_case); |
| if (result == 0) |
| return MZ_OK; |
| |
| err = mz_zip_goto_next_entry(handle); |
| } |
| |
| return err; |
| } |
| |
| int32_t mz_zip_locate_first_entry(void *handle, void *userdata, mz_zip_locate_entry_cb cb) { |
| mz_zip *zip = (mz_zip *)handle; |
| int32_t err = MZ_OK; |
| int32_t result = 0; |
| |
| /* Search first entry looking for match */ |
| err = mz_zip_goto_first_entry(handle); |
| if (err != MZ_OK) |
| return err; |
| |
| result = cb(handle, userdata, &zip->file_info); |
| if (result == 0) |
| return MZ_OK; |
| |
| return mz_zip_locate_next_entry(handle, userdata, cb); |
| } |
| |
| int32_t mz_zip_locate_next_entry(void *handle, void *userdata, mz_zip_locate_entry_cb cb) { |
| mz_zip *zip = (mz_zip *)handle; |
| int32_t err = MZ_OK; |
| int32_t result = 0; |
| |
| /* Search next entries looking for match */ |
| err = mz_zip_goto_next_entry(handle); |
| while (err == MZ_OK) { |
| result = cb(handle, userdata, &zip->file_info); |
| if (result == 0) |
| return MZ_OK; |
| |
| err = mz_zip_goto_next_entry(handle); |
| } |
| |
| return err; |
| } |
| |
| /***************************************************************************/ |
| |
| int32_t mz_zip_attrib_is_dir(uint32_t attrib, int32_t version_madeby) { |
| uint32_t posix_attrib = 0; |
| uint8_t system = MZ_HOST_SYSTEM(version_madeby); |
| int32_t err = MZ_OK; |
| |
| err = mz_zip_attrib_convert(system, attrib, MZ_HOST_SYSTEM_UNIX, &posix_attrib); |
| if (err == MZ_OK) { |
| if ((posix_attrib & 0170000) == 0040000) /* S_ISDIR */ |
| return MZ_OK; |
| } |
| |
| return MZ_EXIST_ERROR; |
| } |
| |
| int32_t mz_zip_attrib_is_symlink(uint32_t attrib, int32_t version_madeby) { |
| uint32_t posix_attrib = 0; |
| uint8_t system = MZ_HOST_SYSTEM(version_madeby); |
| int32_t err = MZ_OK; |
| |
| err = mz_zip_attrib_convert(system, attrib, MZ_HOST_SYSTEM_UNIX, &posix_attrib); |
| if (err == MZ_OK) { |
| if ((posix_attrib & 0170000) == 0120000) /* S_ISLNK */ |
| return MZ_OK; |
| } |
| |
| return MZ_EXIST_ERROR; |
| } |
| |
| int32_t mz_zip_attrib_convert(uint8_t src_sys, uint32_t src_attrib, uint8_t target_sys, uint32_t *target_attrib) { |
| if (!target_attrib) |
| return MZ_PARAM_ERROR; |
| |
| *target_attrib = 0; |
| |
| if ((src_sys == MZ_HOST_SYSTEM_MSDOS) || (src_sys == MZ_HOST_SYSTEM_WINDOWS_NTFS)) { |
| if ((target_sys == MZ_HOST_SYSTEM_MSDOS) || (target_sys == MZ_HOST_SYSTEM_WINDOWS_NTFS)) { |
| *target_attrib = src_attrib; |
| return MZ_OK; |
| } |
| if ((target_sys == MZ_HOST_SYSTEM_UNIX) || (target_sys == MZ_HOST_SYSTEM_OSX_DARWIN) || (target_sys == MZ_HOST_SYSTEM_RISCOS)) |
| return mz_zip_attrib_win32_to_posix(src_attrib, target_attrib); |
| } else if ((src_sys == MZ_HOST_SYSTEM_UNIX) || (src_sys == MZ_HOST_SYSTEM_OSX_DARWIN) || (src_sys == MZ_HOST_SYSTEM_RISCOS)) { |
| /* If high bytes are set, it contains unix specific attributes */ |
| if ((src_attrib >> 16) != 0) |
| src_attrib >>= 16; |
| |
| if ((target_sys == MZ_HOST_SYSTEM_UNIX) || (target_sys == MZ_HOST_SYSTEM_OSX_DARWIN) || (target_sys == MZ_HOST_SYSTEM_RISCOS)) { |
| *target_attrib = src_attrib; |
| return MZ_OK; |
| } |
| if ((target_sys == MZ_HOST_SYSTEM_MSDOS) || (target_sys == MZ_HOST_SYSTEM_WINDOWS_NTFS)) |
| return mz_zip_attrib_posix_to_win32(src_attrib, target_attrib); |
| } |
| |
| return MZ_SUPPORT_ERROR; |
| } |
| |
| int32_t mz_zip_attrib_posix_to_win32(uint32_t posix_attrib, uint32_t *win32_attrib) { |
| if (!win32_attrib) |
| return MZ_PARAM_ERROR; |
| |
| *win32_attrib = 0; |
| |
| /* S_IWUSR | S_IWGRP | S_IWOTH | S_IXUSR | S_IXGRP | S_IXOTH */ |
| if ((posix_attrib & 0000333) == 0 && (posix_attrib & 0000444) != 0) |
| *win32_attrib |= 0x01; /* FILE_ATTRIBUTE_READONLY */ |
| /* S_IFLNK */ |
| if ((posix_attrib & 0170000) == 0120000) |
| *win32_attrib |= 0x400; /* FILE_ATTRIBUTE_REPARSE_POINT */ |
| /* S_IFDIR */ |
| else if ((posix_attrib & 0170000) == 0040000) |
| *win32_attrib |= 0x10; /* FILE_ATTRIBUTE_DIRECTORY */ |
| /* S_IFREG */ |
| else |
| *win32_attrib |= 0x80; /* FILE_ATTRIBUTE_NORMAL */ |
| |
| return MZ_OK; |
| } |
| |
| int32_t mz_zip_attrib_win32_to_posix(uint32_t win32_attrib, uint32_t *posix_attrib) { |
| if (!posix_attrib) |
| return MZ_PARAM_ERROR; |
| |
| *posix_attrib = 0000444; /* S_IRUSR | S_IRGRP | S_IROTH */ |
| /* FILE_ATTRIBUTE_READONLY */ |
| if ((win32_attrib & 0x01) == 0) |
| *posix_attrib |= 0000222; /* S_IWUSR | S_IWGRP | S_IWOTH */ |
| /* FILE_ATTRIBUTE_REPARSE_POINT */ |
| if ((win32_attrib & 0x400) == 0x400) |
| *posix_attrib |= 0120000; /* S_IFLNK */ |
| /* FILE_ATTRIBUTE_DIRECTORY */ |
| else if ((win32_attrib & 0x10) == 0x10) |
| *posix_attrib |= 0040111; /* S_IFDIR | S_IXUSR | S_IXGRP | S_IXOTH */ |
| else |
| *posix_attrib |= 0100000; /* S_IFREG */ |
| |
| return MZ_OK; |
| } |
| |
| /***************************************************************************/ |
| |
| int32_t mz_zip_extrafield_find(void *stream, uint16_t type, int32_t max_seek, uint16_t *length) { |
| int32_t err = MZ_OK; |
| uint16_t field_type = 0; |
| uint16_t field_length = 0; |
| |
| if (max_seek < 4) |
| return MZ_EXIST_ERROR; |
| |
| do { |
| err = mz_stream_read_uint16(stream, &field_type); |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(stream, &field_length); |
| if (err != MZ_OK) |
| break; |
| |
| if (type == field_type) { |
| if (length) |
| *length = field_length; |
| return MZ_OK; |
| } |
| |
| max_seek -= field_length - 4; |
| if (max_seek < 0) |
| return MZ_EXIST_ERROR; |
| |
| err = mz_stream_seek(stream, field_length, MZ_SEEK_CUR); |
| } while (err == MZ_OK); |
| |
| return MZ_EXIST_ERROR; |
| } |
| |
| int32_t mz_zip_extrafield_contains(const uint8_t *extrafield, int32_t extrafield_size, |
| uint16_t type, uint16_t *length) { |
| void *file_extra_stream = NULL; |
| int32_t err = MZ_OK; |
| |
| if (!extrafield || !extrafield_size) |
| return MZ_PARAM_ERROR; |
| |
| mz_stream_mem_create(&file_extra_stream); |
| mz_stream_mem_set_buffer(file_extra_stream, (void *)extrafield, extrafield_size); |
| |
| err = mz_zip_extrafield_find(file_extra_stream, type, extrafield_size, length); |
| |
| mz_stream_mem_delete(&file_extra_stream); |
| |
| return err; |
| } |
| |
| int32_t mz_zip_extrafield_read(void *stream, uint16_t *type, uint16_t *length) { |
| int32_t err = MZ_OK; |
| if (!type || !length) |
| return MZ_PARAM_ERROR; |
| err = mz_stream_read_uint16(stream, type); |
| if (err == MZ_OK) |
| err = mz_stream_read_uint16(stream, length); |
| return err; |
| } |
| |
| int32_t mz_zip_extrafield_write(void *stream, uint16_t type, uint16_t length) { |
| int32_t err = MZ_OK; |
| err = mz_stream_write_uint16(stream, type); |
| if (err == MZ_OK) |
| err = mz_stream_write_uint16(stream, length); |
| return err; |
| } |
| |
| /***************************************************************************/ |
| |
| static int32_t mz_zip_invalid_date(const struct tm *ptm) { |
| #define datevalue_in_range(min, max, value) ((min) <= (value) && (value) <= (max)) |
| return (!datevalue_in_range(0, 127 + 80, ptm->tm_year) || /* 1980-based year, allow 80 extra */ |
| !datevalue_in_range(0, 11, ptm->tm_mon) || |
| !datevalue_in_range(1, 31, ptm->tm_mday) || |
| !datevalue_in_range(0, 23, ptm->tm_hour) || |
| !datevalue_in_range(0, 59, ptm->tm_min) || |
| !datevalue_in_range(0, 59, ptm->tm_sec)); |
| #undef datevalue_in_range |
| } |
| |
| static void mz_zip_dosdate_to_raw_tm(uint64_t dos_date, struct tm *ptm) { |
| uint64_t date = (uint64_t)(dos_date >> 16); |
| |
| ptm->tm_mday = (uint16_t)(date & 0x1f); |
| ptm->tm_mon = (uint16_t)(((date & 0x1E0) / 0x20) - 1); |
| ptm->tm_year = (uint16_t)(((date & 0x0FE00) / 0x0200) + 80); |
| ptm->tm_hour = (uint16_t)((dos_date & 0xF800) / 0x800); |
| ptm->tm_min = (uint16_t)((dos_date & 0x7E0) / 0x20); |
| ptm->tm_sec = (uint16_t)(2 * (dos_date & 0x1f)); |
| ptm->tm_isdst = -1; |
| } |
| |
| int32_t mz_zip_dosdate_to_tm(uint64_t dos_date, struct tm *ptm) { |
| if (!ptm) |
| return MZ_PARAM_ERROR; |
| |
| mz_zip_dosdate_to_raw_tm(dos_date, ptm); |
| |
| if (mz_zip_invalid_date(ptm)) { |
| /* Invalid date stored, so don't return it */ |
| memset(ptm, 0, sizeof(struct tm)); |
| return MZ_FORMAT_ERROR; |
| } |
| return MZ_OK; |
| } |
| |
| time_t mz_zip_dosdate_to_time_t(uint64_t dos_date) { |
| struct tm ptm; |
| mz_zip_dosdate_to_raw_tm(dos_date, &ptm); |
| return mktime(&ptm); |
| } |
| |
| int32_t mz_zip_time_t_to_tm(time_t unix_time, struct tm *ptm) { |
| struct tm ltm; |
| if (!ptm) |
| return MZ_PARAM_ERROR; |
| if (!localtime_r(&unix_time, <m)) { /* Returns a 1900-based year */ |
| /* Invalid date stored, so don't return it */ |
| memset(ptm, 0, sizeof(struct tm)); |
| return MZ_INTERNAL_ERROR; |
| } |
| memcpy(ptm, <m, sizeof(struct tm)); |
| return MZ_OK; |
| } |
| |
| uint32_t mz_zip_time_t_to_dos_date(time_t unix_time) { |
| struct tm ptm; |
| mz_zip_time_t_to_tm(unix_time, &ptm); |
| return mz_zip_tm_to_dosdate((const struct tm *)&ptm); |
| } |
| |