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Diffstat (limited to 'source/kit/miniz/miniz_zip.c')
| -rw-r--r-- | source/kit/miniz/miniz_zip.c | 5473 |
1 files changed, 5473 insertions, 0 deletions
diff --git a/source/kit/miniz/miniz_zip.c b/source/kit/miniz/miniz_zip.c new file mode 100644 index 0000000..0af4bf0 --- /dev/null +++ b/source/kit/miniz/miniz_zip.c @@ -0,0 +1,5473 @@ +/************************************************************************** + * + * Copyright 2013-2014 RAD Game Tools and Valve Software + * Copyright 2010-2014 Rich Geldreich and Tenacious Software LLC + * Copyright 2016 Martin Raiber + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person + *obtaining a copy of this software and associated documentation files + *(the "Software"), to deal in the Software without restriction, + *including without limitation the rights to use, copy, modify, merge, + *publish, distribute, sublicense, and/or sell copies of the Software, + *and to permit persons to whom the Software is furnished to do so, + *subject to the following conditions: + * + * The above copyright notice and this permission notice shall be + *included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + *NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + *BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + *ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + *CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + *SOFTWARE. + * + **************************************************************************/ +#include "miniz.h" + +#ifndef MINIZ_NO_ARCHIVE_APIS + +# ifdef __cplusplus +extern "C" { +# endif + +/* ------------------- .ZIP archive reading */ + +# ifdef MINIZ_NO_STDIO +# define MZ_FILE void * +# else +# include <stdio.h> +# include <sys/stat.h> + +# if defined(_MSC_VER) || defined(__MINGW64__) || \ + defined(__MINGW32__) + +# ifndef WIN32_LEAN_AND_MEAN +# define WIN32_LEAN_AND_MEAN +# endif +# ifndef __cplusplus +# define MICROSOFT_WINDOWS_WINBASE_H_DEFINE_INTERLOCKED_CPLUSPLUS_OVERLOADS \ + 0 +# endif +# ifndef NOMINMAX +# define NOMINMAX +# endif +# include <windows.h> + +static WCHAR *mz_utf8z_to_widechar(const char *str) { + int reqChars = MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0); + WCHAR *wStr = (WCHAR *) malloc(reqChars * sizeof(WCHAR)); + MultiByteToWideChar(CP_UTF8, 0, str, -1, wStr, reqChars); + return wStr; +} + +static FILE *mz_fopen(const char *pFilename, const char *pMode) { + WCHAR *wFilename = mz_utf8z_to_widechar(pFilename); + WCHAR *wMode = mz_utf8z_to_widechar(pMode); + FILE *pFile = NULL; + errno_t err = _wfopen_s(&pFile, wFilename, wMode); + free(wFilename); + free(wMode); + return err ? NULL : pFile; +} + +static FILE *mz_freopen(const char *pPath, const char *pMode, + FILE *pStream) { + WCHAR *wPath = mz_utf8z_to_widechar(pPath); + WCHAR *wMode = mz_utf8z_to_widechar(pMode); + FILE *pFile = NULL; + errno_t err = _wfreopen_s(&pFile, wPath, wMode, pStream); + free(wPath); + free(wMode); + return err ? NULL : pFile; +} + +# if defined(__MINGW32__) +static int mz_stat(const char *path, struct _stat *buffer) { + WCHAR *wPath = mz_utf8z_to_widechar(path); + int res = _wstat(wPath, buffer); + free(wPath); + return res; +} +# else +static int mz_stat64(const char *path, struct __stat64 *buffer) { + WCHAR *wPath = mz_utf8z_to_widechar(path); + int res = _wstat64(wPath, buffer); + free(wPath); + return res; +} +# endif + +# ifndef MINIZ_NO_TIME +# include <sys/utime.h> +# endif +# define MZ_FOPEN mz_fopen +# define MZ_FCLOSE fclose +# define MZ_FREAD fread +# define MZ_FWRITE fwrite +# define MZ_FTELL64 _ftelli64 +# define MZ_FSEEK64 _fseeki64 +# if defined(__MINGW32__) +# define MZ_FILE_STAT_STRUCT _stat +# define MZ_FILE_STAT mz_stat +# else +# define MZ_FILE_STAT_STRUCT _stat64 +# define MZ_FILE_STAT mz_stat64 +# endif +# define MZ_FFLUSH fflush +# define MZ_FREOPEN mz_freopen +# define MZ_DELETE_FILE remove + +# elif defined(__WATCOMC__) +# ifndef MINIZ_NO_TIME +# include <sys/utime.h> +# endif +# define MZ_FOPEN(f, m) fopen(f, m) +# define MZ_FCLOSE fclose +# define MZ_FREAD fread +# define MZ_FWRITE fwrite +# define MZ_FTELL64 _ftelli64 +# define MZ_FSEEK64 _fseeki64 +# define MZ_FILE_STAT_STRUCT stat +# define MZ_FILE_STAT stat +# define MZ_FFLUSH fflush +# define MZ_FREOPEN(f, m, s) freopen(f, m, s) +# define MZ_DELETE_FILE remove + +# elif defined(__TINYC__) +# ifndef MINIZ_NO_TIME +# include <sys/utime.h> +# endif +# define MZ_FOPEN(f, m) fopen(f, m) +# define MZ_FCLOSE fclose +# define MZ_FREAD fread +# define MZ_FWRITE fwrite +# define MZ_FTELL64 ftell +# define MZ_FSEEK64 fseek +# define MZ_FILE_STAT_STRUCT stat +# define MZ_FILE_STAT stat +# define MZ_FFLUSH fflush +# define MZ_FREOPEN(f, m, s) freopen(f, m, s) +# define MZ_DELETE_FILE remove + +# elif defined(__USE_LARGEFILE64) /* gcc, clang */ +# ifndef MINIZ_NO_TIME +# include <utime.h> +# endif +# define MZ_FOPEN(f, m) fopen64(f, m) +# define MZ_FCLOSE fclose +# define MZ_FREAD fread +# define MZ_FWRITE fwrite +# define MZ_FTELL64 ftello64 +# define MZ_FSEEK64 fseeko64 +# define MZ_FILE_STAT_STRUCT stat64 +# define MZ_FILE_STAT stat64 +# define MZ_FFLUSH fflush +# define MZ_FREOPEN(p, m, s) freopen64(p, m, s) +# define MZ_DELETE_FILE remove + +# elif defined(__APPLE__) || defined(__FreeBSD__) || \ + (defined(__linux__) && defined(__x86_64__)) +# ifndef MINIZ_NO_TIME +# include <utime.h> +# endif +# define MZ_FOPEN(f, m) fopen(f, m) +# define MZ_FCLOSE fclose +# define MZ_FREAD fread +# define MZ_FWRITE fwrite +# define MZ_FTELL64 ftello +# define MZ_FSEEK64 fseeko +# define MZ_FILE_STAT_STRUCT stat +# define MZ_FILE_STAT stat +# define MZ_FFLUSH fflush +# define MZ_FREOPEN(p, m, s) freopen(p, m, s) +# define MZ_DELETE_FILE remove + +# else +# pragma message( \ + "Using fopen, ftello, fseeko, stat() etc. path for file I/O - this path may not support large files.") +# ifndef MINIZ_NO_TIME +# include <utime.h> +# endif +# define MZ_FOPEN(f, m) fopen(f, m) +# define MZ_FCLOSE fclose +# define MZ_FREAD fread +# define MZ_FWRITE fwrite +# ifdef __STRICT_ANSI__ +# define MZ_FTELL64 ftell +# define MZ_FSEEK64 fseek +# else +# define MZ_FTELL64 ftello +# define MZ_FSEEK64 fseeko +# endif +# define MZ_FILE_STAT_STRUCT stat +# define MZ_FILE_STAT stat +# define MZ_FFLUSH fflush +# define MZ_FREOPEN(f, m, s) freopen(f, m, s) +# define MZ_DELETE_FILE remove +# endif /* #ifdef _MSC_VER */ +# endif /* #ifdef MINIZ_NO_STDIO */ + +# define MZ_TOLOWER(c) \ + ((((c) >= 'A') && ((c) <= 'Z')) ? ((c) - 'A' + 'a') : (c)) + +/* Various ZIP archive enums. To completely avoid cross platform + * compiler alignment and platform endian issues, miniz.c doesn't use + * structs for any of this stuff. */ +enum { + /* ZIP archive identifiers and record sizes */ + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIG = 0x06054b50, + MZ_ZIP_CENTRAL_DIR_HEADER_SIG = 0x02014b50, + MZ_ZIP_LOCAL_DIR_HEADER_SIG = 0x04034b50, + MZ_ZIP_LOCAL_DIR_HEADER_SIZE = 30, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE = 46, + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE = 22, + + /* ZIP64 archive identifier and record sizes */ + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIG = 0x06064b50, + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIG = 0x07064b50, + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE = 56, + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE = 20, + MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID = 0x0001, + MZ_ZIP_DATA_DESCRIPTOR_ID = 0x08074b50, + MZ_ZIP_DATA_DESCRIPTER_SIZE64 = 24, + MZ_ZIP_DATA_DESCRIPTER_SIZE32 = 16, + + /* Central directory header record offsets */ + MZ_ZIP_CDH_SIG_OFS = 0, + MZ_ZIP_CDH_VERSION_MADE_BY_OFS = 4, + MZ_ZIP_CDH_VERSION_NEEDED_OFS = 6, + MZ_ZIP_CDH_BIT_FLAG_OFS = 8, + MZ_ZIP_CDH_METHOD_OFS = 10, + MZ_ZIP_CDH_FILE_TIME_OFS = 12, + MZ_ZIP_CDH_FILE_DATE_OFS = 14, + MZ_ZIP_CDH_CRC32_OFS = 16, + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS = 20, + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS = 24, + MZ_ZIP_CDH_FILENAME_LEN_OFS = 28, + MZ_ZIP_CDH_EXTRA_LEN_OFS = 30, + MZ_ZIP_CDH_COMMENT_LEN_OFS = 32, + MZ_ZIP_CDH_DISK_START_OFS = 34, + MZ_ZIP_CDH_INTERNAL_ATTR_OFS = 36, + MZ_ZIP_CDH_EXTERNAL_ATTR_OFS = 38, + MZ_ZIP_CDH_LOCAL_HEADER_OFS = 42, + + /* Local directory header offsets */ + MZ_ZIP_LDH_SIG_OFS = 0, + MZ_ZIP_LDH_VERSION_NEEDED_OFS = 4, + MZ_ZIP_LDH_BIT_FLAG_OFS = 6, + MZ_ZIP_LDH_METHOD_OFS = 8, + MZ_ZIP_LDH_FILE_TIME_OFS = 10, + MZ_ZIP_LDH_FILE_DATE_OFS = 12, + MZ_ZIP_LDH_CRC32_OFS = 14, + MZ_ZIP_LDH_COMPRESSED_SIZE_OFS = 18, + MZ_ZIP_LDH_DECOMPRESSED_SIZE_OFS = 22, + MZ_ZIP_LDH_FILENAME_LEN_OFS = 26, + MZ_ZIP_LDH_EXTRA_LEN_OFS = 28, + MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR = 1 << 3, + + /* End of central directory offsets */ + MZ_ZIP_ECDH_SIG_OFS = 0, + MZ_ZIP_ECDH_NUM_THIS_DISK_OFS = 4, + MZ_ZIP_ECDH_NUM_DISK_CDIR_OFS = 6, + MZ_ZIP_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS = 8, + MZ_ZIP_ECDH_CDIR_TOTAL_ENTRIES_OFS = 10, + MZ_ZIP_ECDH_CDIR_SIZE_OFS = 12, + MZ_ZIP_ECDH_CDIR_OFS_OFS = 16, + MZ_ZIP_ECDH_COMMENT_SIZE_OFS = 20, + + /* ZIP64 End of central directory locator offsets */ + MZ_ZIP64_ECDL_SIG_OFS = 0, /* 4 bytes */ + MZ_ZIP64_ECDL_NUM_DISK_CDIR_OFS = 4, /* 4 bytes */ + MZ_ZIP64_ECDL_REL_OFS_TO_ZIP64_ECDR_OFS = 8, /* 8 bytes */ + MZ_ZIP64_ECDL_TOTAL_NUMBER_OF_DISKS_OFS = 16, /* 4 bytes */ + + /* ZIP64 End of central directory header offsets */ + MZ_ZIP64_ECDH_SIG_OFS = 0, /* 4 bytes */ + MZ_ZIP64_ECDH_SIZE_OF_RECORD_OFS = 4, /* 8 bytes */ + MZ_ZIP64_ECDH_VERSION_MADE_BY_OFS = 12, /* 2 bytes */ + MZ_ZIP64_ECDH_VERSION_NEEDED_OFS = 14, /* 2 bytes */ + MZ_ZIP64_ECDH_NUM_THIS_DISK_OFS = 16, /* 4 bytes */ + MZ_ZIP64_ECDH_NUM_DISK_CDIR_OFS = 20, /* 4 bytes */ + MZ_ZIP64_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS = 24, /* 8 bytes */ + MZ_ZIP64_ECDH_CDIR_TOTAL_ENTRIES_OFS = 32, /* 8 bytes */ + MZ_ZIP64_ECDH_CDIR_SIZE_OFS = 40, /* 8 bytes */ + MZ_ZIP64_ECDH_CDIR_OFS_OFS = 48, /* 8 bytes */ + MZ_ZIP_VERSION_MADE_BY_DOS_FILESYSTEM_ID = 0, + MZ_ZIP_DOS_DIR_ATTRIBUTE_BITFLAG = 0x10, + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED = 1, + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG = 32, + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION = 64, + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_LOCAL_DIR_IS_MASKED = 8192, + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_UTF8 = 1 << 11 +}; + +typedef struct { + void *m_p; + size_t m_size, m_capacity; + mz_uint m_element_size; +} mz_zip_array; + +struct mz_zip_internal_state_tag { + mz_zip_array m_central_dir; + mz_zip_array m_central_dir_offsets; + mz_zip_array m_sorted_central_dir_offsets; + + /* The flags passed in when the archive is initially opened. */ + mz_uint32 m_init_flags; + + /* MZ_TRUE if the archive has a zip64 end of central directory + * headers, etc. */ + mz_bool m_zip64; + + /* MZ_TRUE if we found zip64 extended info in the central directory + * (m_zip64 will also be slammed to true too, even if we didn't find + * a zip64 end of central dir header, etc.) */ + mz_bool m_zip64_has_extended_info_fields; + + /* These fields are used by the file, FILE, memory, and memory/heap + * read/write helpers. */ + MZ_FILE *m_pFile; + mz_uint64 m_file_archive_start_ofs; + + void *m_pMem; + size_t m_mem_size; + size_t m_mem_capacity; +}; + +# define MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(array_ptr, element_size) \ + (array_ptr)->m_element_size = element_size + +# if defined(DEBUG) || defined(_DEBUG) +static MZ_FORCEINLINE mz_uint +mz_zip_array_range_check(const mz_zip_array *pArray, mz_uint index) { + MZ_ASSERT(index < pArray->m_size); + return index; +} +# define MZ_ZIP_ARRAY_ELEMENT(array_ptr, element_type, index) \ + ((element_type *) ((array_ptr)->m_p)) \ + [mz_zip_array_range_check(array_ptr, index)] +# else +# define MZ_ZIP_ARRAY_ELEMENT(array_ptr, element_type, index) \ + ((element_type *) ((array_ptr)->m_p))[index] +# endif + +static MZ_FORCEINLINE void mz_zip_array_init(mz_zip_array *pArray, + mz_uint32 element_size) { + memset(pArray, 0, sizeof(mz_zip_array)); + pArray->m_element_size = element_size; +} + +static MZ_FORCEINLINE void mz_zip_array_clear(mz_zip_archive *pZip, + mz_zip_array *pArray) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pArray->m_p); + memset(pArray, 0, sizeof(mz_zip_array)); +} + +static mz_bool mz_zip_array_ensure_capacity(mz_zip_archive *pZip, + mz_zip_array *pArray, + size_t min_new_capacity, + mz_uint growing) { + void *pNew_p; + size_t new_capacity = min_new_capacity; + MZ_ASSERT(pArray->m_element_size); + if (pArray->m_capacity >= min_new_capacity) + return MZ_TRUE; + if (growing) { + new_capacity = MZ_MAX(1, pArray->m_capacity); + while (new_capacity < min_new_capacity) new_capacity *= 2; + } + if (NULL == (pNew_p = pZip->m_pRealloc( + pZip->m_pAlloc_opaque, pArray->m_p, + pArray->m_element_size, new_capacity))) + return MZ_FALSE; + pArray->m_p = pNew_p; + pArray->m_capacity = new_capacity; + return MZ_TRUE; +} + +static MZ_FORCEINLINE mz_bool +mz_zip_array_reserve(mz_zip_archive *pZip, mz_zip_array *pArray, + size_t new_capacity, mz_uint growing) { + if (new_capacity > pArray->m_capacity) { + if (!mz_zip_array_ensure_capacity(pZip, pArray, new_capacity, + growing)) + return MZ_FALSE; + } + return MZ_TRUE; +} + +static MZ_FORCEINLINE mz_bool +mz_zip_array_resize(mz_zip_archive *pZip, mz_zip_array *pArray, + size_t new_size, mz_uint growing) { + if (new_size > pArray->m_capacity) { + if (!mz_zip_array_ensure_capacity(pZip, pArray, new_size, + growing)) + return MZ_FALSE; + } + pArray->m_size = new_size; + return MZ_TRUE; +} + +static MZ_FORCEINLINE mz_bool mz_zip_array_ensure_room( + mz_zip_archive *pZip, mz_zip_array *pArray, size_t n) { + return mz_zip_array_reserve(pZip, pArray, pArray->m_size + n, + MZ_TRUE); +} + +static MZ_FORCEINLINE mz_bool +mz_zip_array_push_back(mz_zip_archive *pZip, mz_zip_array *pArray, + const void *pElements, size_t n) { + size_t orig_size = pArray->m_size; + if (!mz_zip_array_resize(pZip, pArray, orig_size + n, MZ_TRUE)) + return MZ_FALSE; + if (n > 0) + memcpy((mz_uint8 *) pArray->m_p + + orig_size * pArray->m_element_size, + pElements, n * pArray->m_element_size); + return MZ_TRUE; +} + +# ifndef MINIZ_NO_TIME +static MZ_TIME_T mz_zip_dos_to_time_t(int dos_time, int dos_date) { + struct tm tm; + memset(&tm, 0, sizeof(tm)); + tm.tm_isdst = -1; + tm.tm_year = ((dos_date >> 9) & 127) + 1980 - 1900; + tm.tm_mon = ((dos_date >> 5) & 15) - 1; + tm.tm_mday = dos_date & 31; + tm.tm_hour = (dos_time >> 11) & 31; + tm.tm_min = (dos_time >> 5) & 63; + tm.tm_sec = (dos_time << 1) & 62; + return mktime(&tm); +} + +# ifndef MINIZ_NO_ARCHIVE_WRITING_APIS +static void mz_zip_time_t_to_dos_time(MZ_TIME_T time, + mz_uint16 *pDOS_time, + mz_uint16 *pDOS_date) { +# ifdef _MSC_VER + struct tm tm_struct; + struct tm *tm = &tm_struct; + errno_t err = localtime_s(tm, &time); + if (err) { + *pDOS_date = 0; + *pDOS_time = 0; + return; + } +# else + struct tm *tm = localtime(&time); +# endif /* #ifdef _MSC_VER */ + + *pDOS_time = (mz_uint16) (((tm->tm_hour) << 11) + + ((tm->tm_min) << 5) + + ((tm->tm_sec) >> 1)); + *pDOS_date = (mz_uint16) (((tm->tm_year + 1900 - 1980) << 9) + + ((tm->tm_mon + 1) << 5) + tm->tm_mday); +} +# endif /* MINIZ_NO_ARCHIVE_WRITING_APIS */ + +# ifndef MINIZ_NO_STDIO +# ifndef MINIZ_NO_ARCHIVE_WRITING_APIS +static mz_bool mz_zip_get_file_modified_time(const char *pFilename, + MZ_TIME_T *pTime) { + struct MZ_FILE_STAT_STRUCT file_stat; + + /* On Linux with x86 glibc, this call will fail on large files (I + * think >= 0x80000000 bytes) unless you compiled with + * _LARGEFILE64_SOURCE. Argh. */ + if (MZ_FILE_STAT(pFilename, &file_stat) != 0) + return MZ_FALSE; + + *pTime = file_stat.st_mtime; + + return MZ_TRUE; +} +# endif /* #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS*/ + +static mz_bool mz_zip_set_file_times(const char *pFilename, + MZ_TIME_T access_time, + MZ_TIME_T modified_time) { + struct utimbuf t; + + memset(&t, 0, sizeof(t)); + t.actime = access_time; + t.modtime = modified_time; + + return !utime(pFilename, &t); +} +# endif /* #ifndef MINIZ_NO_STDIO */ +# endif /* #ifndef MINIZ_NO_TIME */ + +static MZ_FORCEINLINE mz_bool mz_zip_set_error(mz_zip_archive *pZip, + mz_zip_error err_num) { + if (pZip) + pZip->m_last_error = err_num; + return MZ_FALSE; +} + +static mz_bool mz_zip_reader_init_internal(mz_zip_archive *pZip, + mz_uint flags) { + (void) flags; + if ((!pZip) || (pZip->m_pState) || + (pZip->m_zip_mode != MZ_ZIP_MODE_INVALID)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!pZip->m_pAlloc) + pZip->m_pAlloc = miniz_def_alloc_func; + if (!pZip->m_pFree) + pZip->m_pFree = miniz_def_free_func; + if (!pZip->m_pRealloc) + pZip->m_pRealloc = miniz_def_realloc_func; + + pZip->m_archive_size = 0; + pZip->m_central_directory_file_ofs = 0; + pZip->m_total_files = 0; + pZip->m_last_error = MZ_ZIP_NO_ERROR; + + if (NULL == + (pZip->m_pState = (mz_zip_internal_state *) pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, sizeof(mz_zip_internal_state)))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + memset(pZip->m_pState, 0, sizeof(mz_zip_internal_state)); + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(&pZip->m_pState->m_central_dir, + sizeof(mz_uint8)); + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE( + &pZip->m_pState->m_central_dir_offsets, sizeof(mz_uint32)); + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE( + &pZip->m_pState->m_sorted_central_dir_offsets, + sizeof(mz_uint32)); + pZip->m_pState->m_init_flags = flags; + pZip->m_pState->m_zip64 = MZ_FALSE; + pZip->m_pState->m_zip64_has_extended_info_fields = MZ_FALSE; + + pZip->m_zip_mode = MZ_ZIP_MODE_READING; + + return MZ_TRUE; +} + +static MZ_FORCEINLINE mz_bool +mz_zip_reader_filename_less(const mz_zip_array *pCentral_dir_array, + const mz_zip_array *pCentral_dir_offsets, + mz_uint l_index, mz_uint r_index) { + const mz_uint8 *pL = &MZ_ZIP_ARRAY_ELEMENT( + pCentral_dir_array, mz_uint8, + MZ_ZIP_ARRAY_ELEMENT(pCentral_dir_offsets, + mz_uint32, l_index)), + *pE; + const mz_uint8 *pR = &MZ_ZIP_ARRAY_ELEMENT( + pCentral_dir_array, mz_uint8, + MZ_ZIP_ARRAY_ELEMENT(pCentral_dir_offsets, mz_uint32, r_index)); + mz_uint l_len = MZ_READ_LE16(pL + MZ_ZIP_CDH_FILENAME_LEN_OFS), + r_len = MZ_READ_LE16(pR + MZ_ZIP_CDH_FILENAME_LEN_OFS); + mz_uint8 l = 0, r = 0; + pL += MZ_ZIP_CENTRAL_DIR_HEADER_SIZE; + pR += MZ_ZIP_CENTRAL_DIR_HEADER_SIZE; + pE = pL + MZ_MIN(l_len, r_len); + while (pL < pE) { + if ((l = MZ_TOLOWER(*pL)) != (r = MZ_TOLOWER(*pR))) + break; + pL++; + pR++; + } + return (pL == pE) ? (l_len < r_len) : (l < r); +} + +# define MZ_SWAP_UINT32(a, b) \ + do { \ + mz_uint32 t = a; \ + a = b; \ + b = t; \ + } \ + MZ_MACRO_END + +/* Heap sort of lowercased filenames, used to help accelerate plain + * central directory searches by mz_zip_reader_locate_file(). (Could + * also use qsort(), but it could allocate memory.) */ +static void mz_zip_reader_sort_central_dir_offsets_by_filename( + mz_zip_archive *pZip) { + mz_zip_internal_state *pState = pZip->m_pState; + const mz_zip_array *pCentral_dir_offsets = + &pState->m_central_dir_offsets; + const mz_zip_array *pCentral_dir = &pState->m_central_dir; + mz_uint32 *pIndices; + mz_uint32 start, end; + const mz_uint32 size = pZip->m_total_files; + + if (size <= 1U) + return; + + pIndices = &MZ_ZIP_ARRAY_ELEMENT( + &pState->m_sorted_central_dir_offsets, mz_uint32, 0); + + start = (size - 2U) >> 1U; + for (;;) { + mz_uint64 child, root = start; + for (;;) { + if ((child = (root << 1U) + 1U) >= size) + break; + child += (((child + 1U) < size) && + (mz_zip_reader_filename_less( + pCentral_dir, pCentral_dir_offsets, + pIndices[child], pIndices[child + 1U]))); + if (!mz_zip_reader_filename_less( + pCentral_dir, pCentral_dir_offsets, pIndices[root], + pIndices[child])) + break; + MZ_SWAP_UINT32(pIndices[root], pIndices[child]); + root = child; + } + if (!start) + break; + start--; + } + + end = size - 1; + while (end > 0) { + mz_uint64 child, root = 0; + MZ_SWAP_UINT32(pIndices[end], pIndices[0]); + for (;;) { + if ((child = (root << 1U) + 1U) >= end) + break; + child += (((child + 1U) < end) && + mz_zip_reader_filename_less( + pCentral_dir, pCentral_dir_offsets, + pIndices[child], pIndices[child + 1U])); + if (!mz_zip_reader_filename_less( + pCentral_dir, pCentral_dir_offsets, pIndices[root], + pIndices[child])) + break; + MZ_SWAP_UINT32(pIndices[root], pIndices[child]); + root = child; + } + end--; + } +} + +static mz_bool mz_zip_reader_locate_header_sig(mz_zip_archive *pZip, + mz_uint32 record_sig, + mz_uint32 record_size, + mz_int64 *pOfs) { + mz_int64 cur_file_ofs; + mz_uint32 buf_u32[4096 / sizeof(mz_uint32)]; + mz_uint8 *pBuf = (mz_uint8 *) buf_u32; + + /* Basic sanity checks - reject files which are too small */ + if (pZip->m_archive_size < record_size) + return MZ_FALSE; + + /* Find the record by scanning the file from the end towards the + * beginning. */ + cur_file_ofs = MZ_MAX((mz_int64) pZip->m_archive_size - + (mz_int64) sizeof(buf_u32), + 0); + for (;;) { + int i, n = (int) MZ_MIN(sizeof(buf_u32), + pZip->m_archive_size - cur_file_ofs); + + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pBuf, n) != + (mz_uint) n) + return MZ_FALSE; + + for (i = n - 4; i >= 0; --i) { + mz_uint s = MZ_READ_LE32(pBuf + i); + if (s == record_sig) { + if ((pZip->m_archive_size - (cur_file_ofs + i)) >= + record_size) + break; + } + } + + if (i >= 0) { + cur_file_ofs += i; + break; + } + + /* Give up if we've searched the entire file, or we've gone back + * "too far" (~64kb) */ + if ((!cur_file_ofs) || + ((pZip->m_archive_size - cur_file_ofs) >= + ((mz_uint64) (MZ_UINT16_MAX) + record_size))) + return MZ_FALSE; + + cur_file_ofs = MZ_MAX(cur_file_ofs - (sizeof(buf_u32) - 3), 0); + } + + *pOfs = cur_file_ofs; + return MZ_TRUE; +} + +static mz_bool mz_zip_reader_read_central_dir(mz_zip_archive *pZip, + mz_uint flags) { + mz_uint cdir_size = 0, cdir_entries_on_this_disk = 0, + num_this_disk = 0, cdir_disk_index = 0; + mz_uint64 cdir_ofs = 0; + mz_int64 cur_file_ofs = 0; + const mz_uint8 *p; + + mz_uint32 buf_u32[4096 / sizeof(mz_uint32)]; + mz_uint8 *pBuf = (mz_uint8 *) buf_u32; + mz_bool sort_central_dir = + ((flags & MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY) == 0); + mz_uint32 zip64_end_of_central_dir_locator_u32 + [(MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE + sizeof(mz_uint32) - + 1) / + sizeof(mz_uint32)]; + mz_uint8 *pZip64_locator = (mz_uint8 *) + zip64_end_of_central_dir_locator_u32; + + mz_uint32 zip64_end_of_central_dir_header_u32 + [(MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE + sizeof(mz_uint32) - + 1) / + sizeof(mz_uint32)]; + mz_uint8 *pZip64_end_of_central_dir = (mz_uint8 *) + zip64_end_of_central_dir_header_u32; + + mz_uint64 zip64_end_of_central_dir_ofs = 0; + + /* Basic sanity checks - reject files which are too small, and check + * the first 4 bytes of the file to make sure a local header is + * there. */ + if (pZip->m_archive_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + + if (!mz_zip_reader_locate_header_sig( + pZip, MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIG, + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE, &cur_file_ofs)) + return mz_zip_set_error(pZip, MZ_ZIP_FAILED_FINDING_CENTRAL_DIR); + + /* Read and verify the end of central directory record. */ + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pBuf, + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) != + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + if (MZ_READ_LE32(pBuf + MZ_ZIP_ECDH_SIG_OFS) != + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + + if (cur_file_ofs >= (MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE + + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE)) { + if (pZip->m_pRead(pZip->m_pIO_opaque, + cur_file_ofs - + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE, + pZip64_locator, + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE) == + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE) { + if (MZ_READ_LE32(pZip64_locator + MZ_ZIP64_ECDL_SIG_OFS) == + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIG) { + zip64_end_of_central_dir_ofs = MZ_READ_LE64( + pZip64_locator + MZ_ZIP64_ECDL_REL_OFS_TO_ZIP64_ECDR_OFS); + if (zip64_end_of_central_dir_ofs > + (pZip->m_archive_size - + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE)) + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + + if (pZip->m_pRead(pZip->m_pIO_opaque, + zip64_end_of_central_dir_ofs, + pZip64_end_of_central_dir, + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE) == + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE) { + if (MZ_READ_LE32(pZip64_end_of_central_dir + + MZ_ZIP64_ECDH_SIG_OFS) == + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIG) { + pZip->m_pState->m_zip64 = MZ_TRUE; + } + } + } + } + } + + pZip->m_total_files = MZ_READ_LE16( + pBuf + MZ_ZIP_ECDH_CDIR_TOTAL_ENTRIES_OFS); + cdir_entries_on_this_disk = MZ_READ_LE16( + pBuf + MZ_ZIP_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS); + num_this_disk = MZ_READ_LE16(pBuf + MZ_ZIP_ECDH_NUM_THIS_DISK_OFS); + cdir_disk_index = MZ_READ_LE16(pBuf + + MZ_ZIP_ECDH_NUM_DISK_CDIR_OFS); + cdir_size = MZ_READ_LE32(pBuf + MZ_ZIP_ECDH_CDIR_SIZE_OFS); + cdir_ofs = MZ_READ_LE32(pBuf + MZ_ZIP_ECDH_CDIR_OFS_OFS); + + if (pZip->m_pState->m_zip64) { + mz_uint32 zip64_total_num_of_disks = MZ_READ_LE32( + pZip64_locator + MZ_ZIP64_ECDL_TOTAL_NUMBER_OF_DISKS_OFS); + mz_uint64 zip64_cdir_total_entries = MZ_READ_LE64( + pZip64_end_of_central_dir + + MZ_ZIP64_ECDH_CDIR_TOTAL_ENTRIES_OFS); + mz_uint64 zip64_cdir_total_entries_on_this_disk = MZ_READ_LE64( + pZip64_end_of_central_dir + + MZ_ZIP64_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS); + mz_uint64 zip64_size_of_end_of_central_dir_record = MZ_READ_LE64( + pZip64_end_of_central_dir + MZ_ZIP64_ECDH_SIZE_OF_RECORD_OFS); + mz_uint64 zip64_size_of_central_directory = MZ_READ_LE64( + pZip64_end_of_central_dir + MZ_ZIP64_ECDH_CDIR_SIZE_OFS); + + if (zip64_size_of_end_of_central_dir_record < + (MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE - 12)) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if (zip64_total_num_of_disks != 1U) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK); + + /* Check for miniz's practical limits */ + if (zip64_cdir_total_entries > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + + pZip->m_total_files = (mz_uint32) zip64_cdir_total_entries; + + if (zip64_cdir_total_entries_on_this_disk > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + + cdir_entries_on_this_disk = (mz_uint32) + zip64_cdir_total_entries_on_this_disk; + + /* Check for miniz's current practical limits (sorry, this should + * be enough for millions of files) */ + if (zip64_size_of_central_directory > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + + cdir_size = (mz_uint32) zip64_size_of_central_directory; + + num_this_disk = MZ_READ_LE32(pZip64_end_of_central_dir + + MZ_ZIP64_ECDH_NUM_THIS_DISK_OFS); + + cdir_disk_index = MZ_READ_LE32(pZip64_end_of_central_dir + + MZ_ZIP64_ECDH_NUM_DISK_CDIR_OFS); + + cdir_ofs = MZ_READ_LE64(pZip64_end_of_central_dir + + MZ_ZIP64_ECDH_CDIR_OFS_OFS); + } + + if (pZip->m_total_files != cdir_entries_on_this_disk) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK); + + if (((num_this_disk | cdir_disk_index) != 0) && + ((num_this_disk != 1) || (cdir_disk_index != 1))) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK); + + if (cdir_size < (mz_uint64) pZip->m_total_files * + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if ((cdir_ofs + (mz_uint64) cdir_size) > pZip->m_archive_size) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + pZip->m_central_directory_file_ofs = cdir_ofs; + + if (pZip->m_total_files) { + mz_uint i, n; + /* Read the entire central directory into a heap block, and + * allocate another heap block to hold the unsorted central dir + * file record offsets, and possibly another to hold the sorted + * indices. */ + if ((!mz_zip_array_resize(pZip, &pZip->m_pState->m_central_dir, + cdir_size, MZ_FALSE)) || + (!mz_zip_array_resize(pZip, + &pZip->m_pState->m_central_dir_offsets, + pZip->m_total_files, MZ_FALSE))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + if (sort_central_dir) { + if (!mz_zip_array_resize( + pZip, &pZip->m_pState->m_sorted_central_dir_offsets, + pZip->m_total_files, MZ_FALSE)) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (pZip->m_pRead(pZip->m_pIO_opaque, cdir_ofs, + pZip->m_pState->m_central_dir.m_p, + cdir_size) != cdir_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + /* Now create an index into the central directory file records, do + * some basic sanity checking on each record */ + p = (const mz_uint8 *) pZip->m_pState->m_central_dir.m_p; + for (n = cdir_size, i = 0; i < pZip->m_total_files; ++i) { + mz_uint total_header_size, disk_index, bit_flags, filename_size, + ext_data_size; + mz_uint64 comp_size, decomp_size, local_header_ofs; + + if ((n < MZ_ZIP_CENTRAL_DIR_HEADER_SIZE) || + (MZ_READ_LE32(p) != MZ_ZIP_CENTRAL_DIR_HEADER_SIG)) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + MZ_ZIP_ARRAY_ELEMENT( + &pZip->m_pState->m_central_dir_offsets, mz_uint32, + i) = (mz_uint32) (p - (const mz_uint8 *) pZip->m_pState + ->m_central_dir.m_p); + + if (sort_central_dir) + MZ_ZIP_ARRAY_ELEMENT( + &pZip->m_pState->m_sorted_central_dir_offsets, mz_uint32, + i) = i; + + comp_size = MZ_READ_LE32(p + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS); + decomp_size = MZ_READ_LE32(p + + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS); + local_header_ofs = MZ_READ_LE32(p + + MZ_ZIP_CDH_LOCAL_HEADER_OFS); + filename_size = MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS); + ext_data_size = MZ_READ_LE16(p + MZ_ZIP_CDH_EXTRA_LEN_OFS); + + if ((!pZip->m_pState->m_zip64_has_extended_info_fields) && + (ext_data_size) && + (MZ_MAX(MZ_MAX(comp_size, decomp_size), local_header_ofs) == + MZ_UINT32_MAX)) { + /* Attempt to find zip64 extended information field in the + * entry's extra data */ + mz_uint32 extra_size_remaining = ext_data_size; + + if (extra_size_remaining) { + const mz_uint8 *pExtra_data; + void *buf = NULL; + + if (MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + filename_size + + ext_data_size > + n) { + buf = MZ_MALLOC(ext_data_size); + if (buf == NULL) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + if (pZip->m_pRead(pZip->m_pIO_opaque, + cdir_ofs + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + filename_size, + buf, ext_data_size) != ext_data_size) { + MZ_FREE(buf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + + pExtra_data = (mz_uint8 *) buf; + } else { + pExtra_data = p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + filename_size; + } + + do { + mz_uint32 field_id; + mz_uint32 field_data_size; + + if (extra_size_remaining < (sizeof(mz_uint16) * 2)) { + MZ_FREE(buf); + return mz_zip_set_error( + pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + field_id = MZ_READ_LE16(pExtra_data); + field_data_size = MZ_READ_LE16(pExtra_data + + sizeof(mz_uint16)); + + if ((field_data_size + sizeof(mz_uint16) * 2) > + extra_size_remaining) { + MZ_FREE(buf); + return mz_zip_set_error( + pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + if (field_id == + MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) { + /* Ok, the archive didn't have any zip64 headers but it + * uses a zip64 extended information field so mark it as + * zip64 anyway (this can occur with infozip's zip util + * when it reads compresses files from stdin). */ + pZip->m_pState->m_zip64 = MZ_TRUE; + pZip->m_pState->m_zip64_has_extended_info_fields = + MZ_TRUE; + break; + } + + pExtra_data += sizeof(mz_uint16) * 2 + field_data_size; + extra_size_remaining = extra_size_remaining - + sizeof(mz_uint16) * 2 - + field_data_size; + } while (extra_size_remaining); + + MZ_FREE(buf); + } + } + + /* I've seen archives that aren't marked as zip64 that uses + * zip64 ext data, argh */ + if ((comp_size != MZ_UINT32_MAX) && + (decomp_size != MZ_UINT32_MAX)) { + if (((!MZ_READ_LE32(p + MZ_ZIP_CDH_METHOD_OFS)) && + (decomp_size != comp_size)) || + (decomp_size && !comp_size)) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + disk_index = MZ_READ_LE16(p + MZ_ZIP_CDH_DISK_START_OFS); + if ((disk_index == MZ_UINT16_MAX) || + ((disk_index != num_this_disk) && (disk_index != 1))) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_MULTIDISK); + + if (comp_size != MZ_UINT32_MAX) { + if (((mz_uint64) MZ_READ_LE32(p + + MZ_ZIP_CDH_LOCAL_HEADER_OFS) + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + comp_size) > + pZip->m_archive_size) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + bit_flags = MZ_READ_LE16(p + MZ_ZIP_CDH_BIT_FLAG_OFS); + if (bit_flags & + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_LOCAL_DIR_IS_MASKED) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + + if ((total_header_size = + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS) + + MZ_READ_LE16(p + MZ_ZIP_CDH_EXTRA_LEN_OFS) + + MZ_READ_LE16(p + MZ_ZIP_CDH_COMMENT_LEN_OFS)) > n) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + n -= total_header_size; + p += total_header_size; + } + } + + if (sort_central_dir) + mz_zip_reader_sort_central_dir_offsets_by_filename(pZip); + + return MZ_TRUE; +} + +void mz_zip_zero_struct(mz_zip_archive *pZip) { + if (pZip) + MZ_CLEAR_PTR(pZip); +} + +static mz_bool mz_zip_reader_end_internal(mz_zip_archive *pZip, + mz_bool set_last_error) { + mz_bool status = MZ_TRUE; + + if (!pZip) + return MZ_FALSE; + + if ((!pZip->m_pState) || (!pZip->m_pAlloc) || (!pZip->m_pFree) || + (pZip->m_zip_mode != MZ_ZIP_MODE_READING)) { + if (set_last_error) + pZip->m_last_error = MZ_ZIP_INVALID_PARAMETER; + + return MZ_FALSE; + } + + if (pZip->m_pState) { + mz_zip_internal_state *pState = pZip->m_pState; + pZip->m_pState = NULL; + + mz_zip_array_clear(pZip, &pState->m_central_dir); + mz_zip_array_clear(pZip, &pState->m_central_dir_offsets); + mz_zip_array_clear(pZip, &pState->m_sorted_central_dir_offsets); + +# ifndef MINIZ_NO_STDIO + if (pState->m_pFile) { + if (pZip->m_zip_type == MZ_ZIP_TYPE_FILE) { + if (MZ_FCLOSE(pState->m_pFile) == EOF) { + if (set_last_error) + pZip->m_last_error = MZ_ZIP_FILE_CLOSE_FAILED; + status = MZ_FALSE; + } + } + pState->m_pFile = NULL; + } +# endif /* #ifndef MINIZ_NO_STDIO */ + + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + } + pZip->m_zip_mode = MZ_ZIP_MODE_INVALID; + + return status; +} + +mz_bool mz_zip_reader_end(mz_zip_archive *pZip) { + return mz_zip_reader_end_internal(pZip, MZ_TRUE); +} +mz_bool mz_zip_reader_init(mz_zip_archive *pZip, mz_uint64 size, + mz_uint flags) { + if ((!pZip) || (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!mz_zip_reader_init_internal(pZip, flags)) + return MZ_FALSE; + + pZip->m_zip_type = MZ_ZIP_TYPE_USER; + pZip->m_archive_size = size; + + if (!mz_zip_reader_read_central_dir(pZip, flags)) { + mz_zip_reader_end_internal(pZip, MZ_FALSE); + return MZ_FALSE; + } + + return MZ_TRUE; +} + +static size_t mz_zip_mem_read_func(void *pOpaque, mz_uint64 file_ofs, + void *pBuf, size_t n) { + mz_zip_archive *pZip = (mz_zip_archive *) pOpaque; + size_t s = (file_ofs >= pZip->m_archive_size) + ? 0 + : (size_t) MZ_MIN(pZip->m_archive_size - file_ofs, + n); + memcpy(pBuf, (const mz_uint8 *) pZip->m_pState->m_pMem + file_ofs, + s); + return s; +} + +mz_bool mz_zip_reader_init_mem(mz_zip_archive *pZip, const void *pMem, + size_t size, mz_uint flags) { + if (!pMem) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + + if (!mz_zip_reader_init_internal(pZip, flags)) + return MZ_FALSE; + + pZip->m_zip_type = MZ_ZIP_TYPE_MEMORY; + pZip->m_archive_size = size; + pZip->m_pRead = mz_zip_mem_read_func; + pZip->m_pIO_opaque = pZip; + pZip->m_pNeeds_keepalive = NULL; + +# ifdef __cplusplus + pZip->m_pState->m_pMem = const_cast<void *>(pMem); +# else + pZip->m_pState->m_pMem = (void *) pMem; +# endif + + pZip->m_pState->m_mem_size = size; + + if (!mz_zip_reader_read_central_dir(pZip, flags)) { + mz_zip_reader_end_internal(pZip, MZ_FALSE); + return MZ_FALSE; + } + + return MZ_TRUE; +} + +# ifndef MINIZ_NO_STDIO +static size_t mz_zip_file_read_func(void *pOpaque, mz_uint64 file_ofs, + void *pBuf, size_t n) { + mz_zip_archive *pZip = (mz_zip_archive *) pOpaque; + mz_int64 cur_ofs = MZ_FTELL64(pZip->m_pState->m_pFile); + + file_ofs += pZip->m_pState->m_file_archive_start_ofs; + + if (((mz_int64) file_ofs < 0) || + (((cur_ofs != (mz_int64) file_ofs)) && + (MZ_FSEEK64(pZip->m_pState->m_pFile, (mz_int64) file_ofs, + SEEK_SET)))) + return 0; + + return MZ_FREAD(pBuf, 1, n, pZip->m_pState->m_pFile); +} + +mz_bool mz_zip_reader_init_file(mz_zip_archive *pZip, + const char *pFilename, + mz_uint32 flags) { + return mz_zip_reader_init_file_v2(pZip, pFilename, flags, 0, 0); +} + +mz_bool mz_zip_reader_init_file_v2(mz_zip_archive *pZip, + const char *pFilename, + mz_uint flags, + mz_uint64 file_start_ofs, + mz_uint64 archive_size) { + mz_uint64 file_size; + MZ_FILE *pFile; + + if ((!pZip) || (!pFilename) || + ((archive_size) && + (archive_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE))) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pFile = MZ_FOPEN(pFilename, "rb"); + if (!pFile) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + + file_size = archive_size; + if (!file_size) { + if (MZ_FSEEK64(pFile, 0, SEEK_END)) { + MZ_FCLOSE(pFile); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_SEEK_FAILED); + } + + file_size = MZ_FTELL64(pFile); + } + + /* TODO: Better sanity check archive_size and the # of actual + * remaining bytes */ + + if (file_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) { + MZ_FCLOSE(pFile); + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + } + + if (!mz_zip_reader_init_internal(pZip, flags)) { + MZ_FCLOSE(pFile); + return MZ_FALSE; + } + + pZip->m_zip_type = MZ_ZIP_TYPE_FILE; + pZip->m_pRead = mz_zip_file_read_func; + pZip->m_pIO_opaque = pZip; + pZip->m_pState->m_pFile = pFile; + pZip->m_archive_size = file_size; + pZip->m_pState->m_file_archive_start_ofs = file_start_ofs; + + if (!mz_zip_reader_read_central_dir(pZip, flags)) { + mz_zip_reader_end_internal(pZip, MZ_FALSE); + return MZ_FALSE; + } + + return MZ_TRUE; +} + +mz_bool mz_zip_reader_init_cfile(mz_zip_archive *pZip, MZ_FILE *pFile, + mz_uint64 archive_size, + mz_uint flags) { + mz_uint64 cur_file_ofs; + + if ((!pZip) || (!pFile)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + + cur_file_ofs = MZ_FTELL64(pFile); + + if (!archive_size) { + if (MZ_FSEEK64(pFile, 0, SEEK_END)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_SEEK_FAILED); + + archive_size = MZ_FTELL64(pFile) - cur_file_ofs; + + if (archive_size < MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_NOT_AN_ARCHIVE); + } + + if (!mz_zip_reader_init_internal(pZip, flags)) + return MZ_FALSE; + + pZip->m_zip_type = MZ_ZIP_TYPE_CFILE; + pZip->m_pRead = mz_zip_file_read_func; + + pZip->m_pIO_opaque = pZip; + pZip->m_pState->m_pFile = pFile; + pZip->m_archive_size = archive_size; + pZip->m_pState->m_file_archive_start_ofs = cur_file_ofs; + + if (!mz_zip_reader_read_central_dir(pZip, flags)) { + mz_zip_reader_end_internal(pZip, MZ_FALSE); + return MZ_FALSE; + } + + return MZ_TRUE; +} + +# endif /* #ifndef MINIZ_NO_STDIO */ + +static MZ_FORCEINLINE const mz_uint8 *mz_zip_get_cdh( + mz_zip_archive *pZip, mz_uint file_index) { + if ((!pZip) || (!pZip->m_pState) || + (file_index >= pZip->m_total_files)) + return NULL; + return &MZ_ZIP_ARRAY_ELEMENT( + &pZip->m_pState->m_central_dir, mz_uint8, + MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_central_dir_offsets, + mz_uint32, file_index)); +} + +mz_bool mz_zip_reader_is_file_encrypted(mz_zip_archive *pZip, + mz_uint file_index) { + mz_uint m_bit_flag; + const mz_uint8 *p = mz_zip_get_cdh(pZip, file_index); + if (!p) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + return MZ_FALSE; + } + + m_bit_flag = MZ_READ_LE16(p + MZ_ZIP_CDH_BIT_FLAG_OFS); + return (m_bit_flag & + (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION)) != + 0; +} + +mz_bool mz_zip_reader_is_file_supported(mz_zip_archive *pZip, + mz_uint file_index) { + mz_uint bit_flag; + mz_uint method; + + const mz_uint8 *p = mz_zip_get_cdh(pZip, file_index); + if (!p) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + return MZ_FALSE; + } + + method = MZ_READ_LE16(p + MZ_ZIP_CDH_METHOD_OFS); + bit_flag = MZ_READ_LE16(p + MZ_ZIP_CDH_BIT_FLAG_OFS); + + if ((method != 0) && (method != MZ_DEFLATED)) { + mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD); + return MZ_FALSE; + } + + if (bit_flag & + (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION)) { + mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + return MZ_FALSE; + } + + if (bit_flag & + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG) { + mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_FEATURE); + return MZ_FALSE; + } + + return MZ_TRUE; +} + +mz_bool mz_zip_reader_is_file_a_directory(mz_zip_archive *pZip, + mz_uint file_index) { + mz_uint filename_len, attribute_mapping_id, external_attr; + const mz_uint8 *p = mz_zip_get_cdh(pZip, file_index); + if (!p) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + return MZ_FALSE; + } + + filename_len = MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS); + if (filename_len) { + if (*(p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + filename_len - 1) == + '/') + return MZ_TRUE; + } + + /* Bugfix: This code was also checking if the internal attribute was + * non-zero, which wasn't correct. */ + /* Most/all zip writers (hopefully) set DOS file/directory + * attributes in the low 16-bits, so check for the DOS directory + * flag and ignore the source OS ID in the created by field. */ + /* FIXME: Remove this check? Is it necessary - we already check the + * filename. */ + attribute_mapping_id = MZ_READ_LE16( + p + MZ_ZIP_CDH_VERSION_MADE_BY_OFS) >> + 8; + (void) attribute_mapping_id; + + external_attr = MZ_READ_LE32(p + MZ_ZIP_CDH_EXTERNAL_ATTR_OFS); + if ((external_attr & MZ_ZIP_DOS_DIR_ATTRIBUTE_BITFLAG) != 0) { + return MZ_TRUE; + } + + return MZ_FALSE; +} + +static mz_bool mz_zip_file_stat_internal( + mz_zip_archive *pZip, mz_uint file_index, + const mz_uint8 *pCentral_dir_header, + mz_zip_archive_file_stat *pStat, + mz_bool *pFound_zip64_extra_data) { + mz_uint n; + const mz_uint8 *p = pCentral_dir_header; + + if (pFound_zip64_extra_data) + *pFound_zip64_extra_data = MZ_FALSE; + + if ((!p) || (!pStat)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + /* Extract fields from the central directory record. */ + pStat->m_file_index = file_index; + pStat->m_central_dir_ofs = MZ_ZIP_ARRAY_ELEMENT( + &pZip->m_pState->m_central_dir_offsets, mz_uint32, file_index); + pStat->m_version_made_by = MZ_READ_LE16( + p + MZ_ZIP_CDH_VERSION_MADE_BY_OFS); + pStat->m_version_needed = MZ_READ_LE16( + p + MZ_ZIP_CDH_VERSION_NEEDED_OFS); + pStat->m_bit_flag = MZ_READ_LE16(p + MZ_ZIP_CDH_BIT_FLAG_OFS); + pStat->m_method = MZ_READ_LE16(p + MZ_ZIP_CDH_METHOD_OFS); +# ifndef MINIZ_NO_TIME + pStat->m_time = mz_zip_dos_to_time_t( + MZ_READ_LE16(p + MZ_ZIP_CDH_FILE_TIME_OFS), + MZ_READ_LE16(p + MZ_ZIP_CDH_FILE_DATE_OFS)); +# endif + pStat->m_crc32 = MZ_READ_LE32(p + MZ_ZIP_CDH_CRC32_OFS); + pStat->m_comp_size = MZ_READ_LE32(p + + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS); + pStat->m_uncomp_size = MZ_READ_LE32( + p + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS); + pStat->m_internal_attr = MZ_READ_LE16(p + + MZ_ZIP_CDH_INTERNAL_ATTR_OFS); + pStat->m_external_attr = MZ_READ_LE32(p + + MZ_ZIP_CDH_EXTERNAL_ATTR_OFS); + pStat->m_local_header_ofs = MZ_READ_LE32( + p + MZ_ZIP_CDH_LOCAL_HEADER_OFS); + + /* Copy as much of the filename and comment as possible. */ + n = MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS); + n = MZ_MIN(n, MZ_ZIP_MAX_ARCHIVE_FILENAME_SIZE - 1); + memcpy(pStat->m_filename, p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE, n); + pStat->m_filename[n] = '\0'; + + n = MZ_READ_LE16(p + MZ_ZIP_CDH_COMMENT_LEN_OFS); + n = MZ_MIN(n, MZ_ZIP_MAX_ARCHIVE_FILE_COMMENT_SIZE - 1); + pStat->m_comment_size = n; + memcpy(pStat->m_comment, + p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS) + + MZ_READ_LE16(p + MZ_ZIP_CDH_EXTRA_LEN_OFS), + n); + pStat->m_comment[n] = '\0'; + + /* Set some flags for convienance */ + pStat->m_is_directory = mz_zip_reader_is_file_a_directory( + pZip, file_index); + pStat->m_is_encrypted = mz_zip_reader_is_file_encrypted(pZip, + file_index); + pStat->m_is_supported = mz_zip_reader_is_file_supported(pZip, + file_index); + + /* See if we need to read any zip64 extended information fields. */ + /* Confusingly, these zip64 fields can be present even on non-zip64 + * archives (Debian zip on a huge files from stdin piped to stdout + * creates them). */ + if (MZ_MAX(MZ_MAX(pStat->m_comp_size, pStat->m_uncomp_size), + pStat->m_local_header_ofs) == MZ_UINT32_MAX) { + /* Attempt to find zip64 extended information field in the entry's + * extra data */ + mz_uint32 extra_size_remaining = MZ_READ_LE16( + p + MZ_ZIP_CDH_EXTRA_LEN_OFS); + + if (extra_size_remaining) { + const mz_uint8 *pExtra_data = + p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS); + + do { + mz_uint32 field_id; + mz_uint32 field_data_size; + + if (extra_size_remaining < (sizeof(mz_uint16) * 2)) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + field_id = MZ_READ_LE16(pExtra_data); + field_data_size = MZ_READ_LE16(pExtra_data + + sizeof(mz_uint16)); + + if ((field_data_size + sizeof(mz_uint16) * 2) > + extra_size_remaining) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if (field_id == + MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) { + const mz_uint8 *pField_data = pExtra_data + + sizeof(mz_uint16) * 2; + mz_uint32 field_data_remaining = field_data_size; + + if (pFound_zip64_extra_data) + *pFound_zip64_extra_data = MZ_TRUE; + + if (pStat->m_uncomp_size == MZ_UINT32_MAX) { + if (field_data_remaining < sizeof(mz_uint64)) + return mz_zip_set_error( + pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + pStat->m_uncomp_size = MZ_READ_LE64(pField_data); + pField_data += sizeof(mz_uint64); + field_data_remaining -= sizeof(mz_uint64); + } + + if (pStat->m_comp_size == MZ_UINT32_MAX) { + if (field_data_remaining < sizeof(mz_uint64)) + return mz_zip_set_error( + pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + pStat->m_comp_size = MZ_READ_LE64(pField_data); + pField_data += sizeof(mz_uint64); + field_data_remaining -= sizeof(mz_uint64); + } + + if (pStat->m_local_header_ofs == MZ_UINT32_MAX) { + if (field_data_remaining < sizeof(mz_uint64)) + return mz_zip_set_error( + pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + pStat->m_local_header_ofs = MZ_READ_LE64(pField_data); + pField_data += sizeof(mz_uint64); + field_data_remaining -= sizeof(mz_uint64); + } + + break; + } + + pExtra_data += sizeof(mz_uint16) * 2 + field_data_size; + extra_size_remaining = extra_size_remaining - + sizeof(mz_uint16) * 2 - + field_data_size; + } while (extra_size_remaining); + } + } + + return MZ_TRUE; +} + +static MZ_FORCEINLINE mz_bool mz_zip_string_equal(const char *pA, + const char *pB, + mz_uint len, + mz_uint flags) { + mz_uint i; + if (flags & MZ_ZIP_FLAG_CASE_SENSITIVE) + return 0 == memcmp(pA, pB, len); + for (i = 0; i < len; ++i) + if (MZ_TOLOWER(pA[i]) != MZ_TOLOWER(pB[i])) + return MZ_FALSE; + return MZ_TRUE; +} + +static MZ_FORCEINLINE int mz_zip_filename_compare( + const mz_zip_array *pCentral_dir_array, + const mz_zip_array *pCentral_dir_offsets, mz_uint l_index, + const char *pR, mz_uint r_len) { + const mz_uint8 *pL = &MZ_ZIP_ARRAY_ELEMENT( + pCentral_dir_array, mz_uint8, + MZ_ZIP_ARRAY_ELEMENT(pCentral_dir_offsets, + mz_uint32, l_index)), + *pE; + mz_uint l_len = MZ_READ_LE16(pL + MZ_ZIP_CDH_FILENAME_LEN_OFS); + mz_uint8 l = 0, r = 0; + pL += MZ_ZIP_CENTRAL_DIR_HEADER_SIZE; + pE = pL + MZ_MIN(l_len, r_len); + while (pL < pE) { + if ((l = MZ_TOLOWER(*pL)) != (r = MZ_TOLOWER(*pR))) + break; + pL++; + pR++; + } + return (pL == pE) ? (int) (l_len - r_len) : (l - r); +} + +static mz_bool mz_zip_locate_file_binary_search(mz_zip_archive *pZip, + const char *pFilename, + mz_uint32 *pIndex) { + mz_zip_internal_state *pState = pZip->m_pState; + const mz_zip_array *pCentral_dir_offsets = + &pState->m_central_dir_offsets; + const mz_zip_array *pCentral_dir = &pState->m_central_dir; + mz_uint32 *pIndices = &MZ_ZIP_ARRAY_ELEMENT( + &pState->m_sorted_central_dir_offsets, mz_uint32, 0); + const mz_uint32 size = pZip->m_total_files; + const mz_uint filename_len = (mz_uint) strlen(pFilename); + + if (pIndex) + *pIndex = 0; + + if (size) { + /* yes I could use uint32_t's, but then we would have to add some + * special case checks in the loop, argh, and */ + /* honestly the major expense here on 32-bit CPU's will still be + * the filename compare */ + mz_int64 l = 0, h = (mz_int64) size - 1; + + while (l <= h) { + mz_int64 m = l + ((h - l) >> 1); + mz_uint32 file_index = pIndices[(mz_uint32) m]; + + int comp = mz_zip_filename_compare( + pCentral_dir, pCentral_dir_offsets, file_index, pFilename, + filename_len); + if (!comp) { + if (pIndex) + *pIndex = file_index; + return MZ_TRUE; + } else if (comp < 0) + l = m + 1; + else + h = m - 1; + } + } + + return mz_zip_set_error(pZip, MZ_ZIP_FILE_NOT_FOUND); +} + +int mz_zip_reader_locate_file(mz_zip_archive *pZip, const char *pName, + const char *pComment, mz_uint flags) { + mz_uint32 index; + if (!mz_zip_reader_locate_file_v2(pZip, pName, pComment, flags, + &index)) + return -1; + else + return (int) index; +} + +mz_bool mz_zip_reader_locate_file_v2(mz_zip_archive *pZip, + const char *pName, + const char *pComment, + mz_uint flags, + mz_uint32 *pIndex) { + mz_uint file_index; + size_t name_len, comment_len; + + if (pIndex) + *pIndex = 0; + + if ((!pZip) || (!pZip->m_pState) || (!pName)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + /* See if we can use a binary search */ + if (((pZip->m_pState->m_init_flags & + MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY) == 0) && + (pZip->m_zip_mode == MZ_ZIP_MODE_READING) && + ((flags & (MZ_ZIP_FLAG_IGNORE_PATH | + MZ_ZIP_FLAG_CASE_SENSITIVE)) == 0) && + (!pComment) && + (pZip->m_pState->m_sorted_central_dir_offsets.m_size)) { + return mz_zip_locate_file_binary_search(pZip, pName, pIndex); + } + + /* Locate the entry by scanning the entire central directory */ + name_len = strlen(pName); + if (name_len > MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + comment_len = pComment ? strlen(pComment) : 0; + if (comment_len > MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + for (file_index = 0; file_index < pZip->m_total_files; + file_index++) { + const mz_uint8 *pHeader = &MZ_ZIP_ARRAY_ELEMENT( + &pZip->m_pState->m_central_dir, mz_uint8, + MZ_ZIP_ARRAY_ELEMENT(&pZip->m_pState->m_central_dir_offsets, + mz_uint32, file_index)); + mz_uint filename_len = MZ_READ_LE16(pHeader + + MZ_ZIP_CDH_FILENAME_LEN_OFS); + const char *pFilename = (const char *) pHeader + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE; + if (filename_len < name_len) + continue; + if (comment_len) { + mz_uint file_extra_len = MZ_READ_LE16(pHeader + + MZ_ZIP_CDH_EXTRA_LEN_OFS), + file_comment_len = MZ_READ_LE16( + pHeader + MZ_ZIP_CDH_COMMENT_LEN_OFS); + const char *pFile_comment = pFilename + filename_len + + file_extra_len; + if ((file_comment_len != comment_len) || + (!mz_zip_string_equal(pComment, pFile_comment, + file_comment_len, flags))) + continue; + } + if ((flags & MZ_ZIP_FLAG_IGNORE_PATH) && (filename_len)) { + int ofs = filename_len - 1; + do { + if ((pFilename[ofs] == '/') || (pFilename[ofs] == '\\') || + (pFilename[ofs] == ':')) + break; + } while (--ofs >= 0); + ofs++; + pFilename += ofs; + filename_len -= ofs; + } + if ((filename_len == name_len) && + (mz_zip_string_equal(pName, pFilename, filename_len, + flags))) { + if (pIndex) + *pIndex = file_index; + return MZ_TRUE; + } + } + + return mz_zip_set_error(pZip, MZ_ZIP_FILE_NOT_FOUND); +} + +static mz_bool mz_zip_reader_extract_to_mem_no_alloc1( + mz_zip_archive *pZip, mz_uint file_index, void *pBuf, + size_t buf_size, mz_uint flags, void *pUser_read_buf, + size_t user_read_buf_size, const mz_zip_archive_file_stat *st) { + int status = TINFL_STATUS_DONE; + mz_uint64 needed_size, cur_file_ofs, comp_remaining, + out_buf_ofs = 0, read_buf_size, read_buf_ofs = 0, + read_buf_avail; + mz_zip_archive_file_stat file_stat; + void *pRead_buf; + mz_uint32 local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pLocal_header = (mz_uint8 *) local_header_u32; + tinfl_decompressor inflator; + + if ((!pZip) || (!pZip->m_pState) || ((buf_size) && (!pBuf)) || + ((user_read_buf_size) && (!pUser_read_buf)) || (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (st) { + file_stat = *st; + } else if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) + return MZ_FALSE; + + /* A directory or zero length file */ + if ((file_stat.m_is_directory) || (!file_stat.m_comp_size)) + return MZ_TRUE; + + /* Encryption and patch files are not supported. */ + if (file_stat.m_bit_flag & + (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + + /* This function only supports decompressing stored and deflate. */ + if ((!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) && + (file_stat.m_method != 0) && + (file_stat.m_method != MZ_DEFLATED)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD); + + /* Ensure supplied output buffer is large enough. */ + needed_size = (flags & MZ_ZIP_FLAG_COMPRESSED_DATA) + ? file_stat.m_comp_size + : file_stat.m_uncomp_size; + if (buf_size < needed_size) + return mz_zip_set_error(pZip, MZ_ZIP_BUF_TOO_SMALL); + + /* Read and parse the local directory entry. */ + cur_file_ofs = file_stat.m_local_header_ofs; + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pLocal_header, + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + cur_file_ofs += + (mz_uint64) (MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS) + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_EXTRA_LEN_OFS); + if ((cur_file_ofs + file_stat.m_comp_size) > pZip->m_archive_size) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if ((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || + (!file_stat.m_method)) { + /* The file is stored or the caller has requested the compressed + * data. */ + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pBuf, + (size_t) needed_size) != needed_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + if ((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) == 0) { + if (mz_crc32(MZ_CRC32_INIT, (const mz_uint8 *) pBuf, + (size_t) file_stat.m_uncomp_size) != + file_stat.m_crc32) + return mz_zip_set_error(pZip, MZ_ZIP_CRC_CHECK_FAILED); + } +# endif + + return MZ_TRUE; + } + + /* Decompress the file either directly from memory or from a file + * input buffer. */ + tinfl_init(&inflator); + + if (pZip->m_pState->m_pMem) { + /* Read directly from the archive in memory. */ + pRead_buf = (mz_uint8 *) pZip->m_pState->m_pMem + cur_file_ofs; + read_buf_size = read_buf_avail = file_stat.m_comp_size; + comp_remaining = 0; + } else if (pUser_read_buf) { + /* Use a user provided read buffer. */ + if (!user_read_buf_size) + return MZ_FALSE; + pRead_buf = (mz_uint8 *) pUser_read_buf; + read_buf_size = user_read_buf_size; + read_buf_avail = 0; + comp_remaining = file_stat.m_comp_size; + } else { + /* Temporarily allocate a read buffer. */ + read_buf_size = MZ_MIN(file_stat.m_comp_size, + (mz_uint64) MZ_ZIP_MAX_IO_BUF_SIZE); + if (((sizeof(size_t) == sizeof(mz_uint32))) && + (read_buf_size > 0x7FFFFFFF)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (NULL == (pRead_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, + (size_t) read_buf_size))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + read_buf_avail = 0; + comp_remaining = file_stat.m_comp_size; + } + + do { + /* The size_t cast here should be OK because we've verified that + * the output buffer is >= file_stat.m_uncomp_size above */ + size_t in_buf_size, + out_buf_size = (size_t) (file_stat.m_uncomp_size - + out_buf_ofs); + if ((!read_buf_avail) && (!pZip->m_pState->m_pMem)) { + read_buf_avail = MZ_MIN(read_buf_size, comp_remaining); + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pRead_buf, + (size_t) read_buf_avail) != read_buf_avail) { + status = TINFL_STATUS_FAILED; + mz_zip_set_error(pZip, MZ_ZIP_DECOMPRESSION_FAILED); + break; + } + cur_file_ofs += read_buf_avail; + comp_remaining -= read_buf_avail; + read_buf_ofs = 0; + } + in_buf_size = (size_t) read_buf_avail; + status = tinfl_decompress( + &inflator, (mz_uint8 *) pRead_buf + read_buf_ofs, + &in_buf_size, (mz_uint8 *) pBuf, + (mz_uint8 *) pBuf + out_buf_ofs, &out_buf_size, + TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF | + (comp_remaining ? TINFL_FLAG_HAS_MORE_INPUT : 0)); + read_buf_avail -= in_buf_size; + read_buf_ofs += in_buf_size; + out_buf_ofs += out_buf_size; + } while (status == TINFL_STATUS_NEEDS_MORE_INPUT); + + if (status == TINFL_STATUS_DONE) { + /* Make sure the entire file was decompressed, and check its CRC. + */ + if (out_buf_ofs != file_stat.m_uncomp_size) { + mz_zip_set_error(pZip, MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE); + status = TINFL_STATUS_FAILED; + } +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + else if (mz_crc32(MZ_CRC32_INIT, (const mz_uint8 *) pBuf, + (size_t) file_stat.m_uncomp_size) != + file_stat.m_crc32) { + mz_zip_set_error(pZip, MZ_ZIP_CRC_CHECK_FAILED); + status = TINFL_STATUS_FAILED; + } +# endif + } + + if ((!pZip->m_pState->m_pMem) && (!pUser_read_buf)) + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + + return status == TINFL_STATUS_DONE; +} + +mz_bool mz_zip_reader_extract_to_mem_no_alloc( + mz_zip_archive *pZip, mz_uint file_index, void *pBuf, + size_t buf_size, mz_uint flags, void *pUser_read_buf, + size_t user_read_buf_size) { + return mz_zip_reader_extract_to_mem_no_alloc1( + pZip, file_index, pBuf, buf_size, flags, pUser_read_buf, + user_read_buf_size, NULL); +} + +mz_bool mz_zip_reader_extract_file_to_mem_no_alloc( + mz_zip_archive *pZip, const char *pFilename, void *pBuf, + size_t buf_size, mz_uint flags, void *pUser_read_buf, + size_t user_read_buf_size) { + mz_uint32 file_index; + if (!mz_zip_reader_locate_file_v2(pZip, pFilename, NULL, flags, + &file_index)) + return MZ_FALSE; + return mz_zip_reader_extract_to_mem_no_alloc1( + pZip, file_index, pBuf, buf_size, flags, pUser_read_buf, + user_read_buf_size, NULL); +} + +mz_bool mz_zip_reader_extract_to_mem(mz_zip_archive *pZip, + mz_uint file_index, void *pBuf, + size_t buf_size, mz_uint flags) { + return mz_zip_reader_extract_to_mem_no_alloc1( + pZip, file_index, pBuf, buf_size, flags, NULL, 0, NULL); +} + +mz_bool mz_zip_reader_extract_file_to_mem(mz_zip_archive *pZip, + const char *pFilename, + void *pBuf, size_t buf_size, + mz_uint flags) { + return mz_zip_reader_extract_file_to_mem_no_alloc( + pZip, pFilename, pBuf, buf_size, flags, NULL, 0); +} + +void *mz_zip_reader_extract_to_heap(mz_zip_archive *pZip, + mz_uint file_index, size_t *pSize, + mz_uint flags) { + mz_zip_archive_file_stat file_stat; + mz_uint64 alloc_size; + void *pBuf; + + if (pSize) + *pSize = 0; + + if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) + return NULL; + + alloc_size = (flags & MZ_ZIP_FLAG_COMPRESSED_DATA) + ? file_stat.m_comp_size + : file_stat.m_uncomp_size; + if (((sizeof(size_t) == sizeof(mz_uint32))) && + (alloc_size > 0x7FFFFFFF)) { + mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + return NULL; + } + + if (NULL == (pBuf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, + (size_t) alloc_size))) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + return NULL; + } + + if (!mz_zip_reader_extract_to_mem_no_alloc1( + pZip, file_index, pBuf, (size_t) alloc_size, flags, NULL, 0, + &file_stat)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return NULL; + } + + if (pSize) + *pSize = (size_t) alloc_size; + return pBuf; +} + +void *mz_zip_reader_extract_file_to_heap(mz_zip_archive *pZip, + const char *pFilename, + size_t *pSize, + mz_uint flags) { + mz_uint32 file_index; + if (!mz_zip_reader_locate_file_v2(pZip, pFilename, NULL, flags, + &file_index)) { + if (pSize) + *pSize = 0; + return MZ_FALSE; + } + return mz_zip_reader_extract_to_heap(pZip, file_index, pSize, + flags); +} + +mz_bool mz_zip_reader_extract_to_callback( + mz_zip_archive *pZip, mz_uint file_index, + mz_file_write_func pCallback, void *pOpaque, mz_uint flags) { + int status = TINFL_STATUS_DONE; +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + mz_uint file_crc32 = MZ_CRC32_INIT; +# endif + mz_uint64 read_buf_size, read_buf_ofs = 0, read_buf_avail, + comp_remaining, out_buf_ofs = 0, + cur_file_ofs; + mz_zip_archive_file_stat file_stat; + void *pRead_buf = NULL; + void *pWrite_buf = NULL; + mz_uint32 local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pLocal_header = (mz_uint8 *) local_header_u32; + + if ((!pZip) || (!pZip->m_pState) || (!pCallback) || + (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) + return MZ_FALSE; + + /* A directory or zero length file */ + if ((file_stat.m_is_directory) || (!file_stat.m_comp_size)) + return MZ_TRUE; + + /* Encryption and patch files are not supported. */ + if (file_stat.m_bit_flag & + (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + + /* This function only supports decompressing stored and deflate. */ + if ((!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) && + (file_stat.m_method != 0) && + (file_stat.m_method != MZ_DEFLATED)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD); + + /* Read and do some minimal validation of the local directory entry + * (this doesn't crack the zip64 stuff, which we already have from + * the central dir) */ + cur_file_ofs = file_stat.m_local_header_ofs; + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pLocal_header, + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + cur_file_ofs += + (mz_uint64) (MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS) + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_EXTRA_LEN_OFS); + if ((cur_file_ofs + file_stat.m_comp_size) > pZip->m_archive_size) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + /* Decompress the file either directly from memory or from a file + * input buffer. */ + if (pZip->m_pState->m_pMem) { + pRead_buf = (mz_uint8 *) pZip->m_pState->m_pMem + cur_file_ofs; + read_buf_size = read_buf_avail = file_stat.m_comp_size; + comp_remaining = 0; + } else { + read_buf_size = MZ_MIN(file_stat.m_comp_size, + (mz_uint64) MZ_ZIP_MAX_IO_BUF_SIZE); + if (NULL == (pRead_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, + (size_t) read_buf_size))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + read_buf_avail = 0; + comp_remaining = file_stat.m_comp_size; + } + + if ((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || + (!file_stat.m_method)) { + /* The file is stored or the caller has requested the compressed + * data. */ + if (pZip->m_pState->m_pMem) { + if (((sizeof(size_t) == sizeof(mz_uint32))) && + (file_stat.m_comp_size > MZ_UINT32_MAX)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (pCallback(pOpaque, out_buf_ofs, pRead_buf, + (size_t) file_stat.m_comp_size) != + file_stat.m_comp_size) { + mz_zip_set_error(pZip, MZ_ZIP_WRITE_CALLBACK_FAILED); + status = TINFL_STATUS_FAILED; + } else if (!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) { +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + file_crc32 = (mz_uint32) mz_crc32( + file_crc32, (const mz_uint8 *) pRead_buf, + (size_t) file_stat.m_comp_size); +# endif + } + + cur_file_ofs += file_stat.m_comp_size; + out_buf_ofs += file_stat.m_comp_size; + comp_remaining = 0; + } else { + while (comp_remaining) { + read_buf_avail = MZ_MIN(read_buf_size, comp_remaining); + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, pRead_buf, + (size_t) read_buf_avail) != + read_buf_avail) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + status = TINFL_STATUS_FAILED; + break; + } + +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + if (!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) { + file_crc32 = (mz_uint32) mz_crc32( + file_crc32, (const mz_uint8 *) pRead_buf, + (size_t) read_buf_avail); + } +# endif + + if (pCallback(pOpaque, out_buf_ofs, pRead_buf, + (size_t) read_buf_avail) != read_buf_avail) { + mz_zip_set_error(pZip, MZ_ZIP_WRITE_CALLBACK_FAILED); + status = TINFL_STATUS_FAILED; + break; + } + + cur_file_ofs += read_buf_avail; + out_buf_ofs += read_buf_avail; + comp_remaining -= read_buf_avail; + } + } + } else { + tinfl_decompressor inflator; + tinfl_init(&inflator); + + if (NULL == (pWrite_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, + TINFL_LZ_DICT_SIZE))) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + status = TINFL_STATUS_FAILED; + } else { + do { + mz_uint8 *pWrite_buf_cur = (mz_uint8 *) pWrite_buf + + (out_buf_ofs & + (TINFL_LZ_DICT_SIZE - 1)); + size_t in_buf_size, + out_buf_size = TINFL_LZ_DICT_SIZE - + (out_buf_ofs & (TINFL_LZ_DICT_SIZE - 1)); + if ((!read_buf_avail) && (!pZip->m_pState->m_pMem)) { + read_buf_avail = MZ_MIN(read_buf_size, comp_remaining); + if (pZip->m_pRead(pZip->m_pIO_opaque, cur_file_ofs, + pRead_buf, (size_t) read_buf_avail) != + read_buf_avail) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + status = TINFL_STATUS_FAILED; + break; + } + cur_file_ofs += read_buf_avail; + comp_remaining -= read_buf_avail; + read_buf_ofs = 0; + } + + in_buf_size = (size_t) read_buf_avail; + status = tinfl_decompress( + &inflator, (const mz_uint8 *) pRead_buf + read_buf_ofs, + &in_buf_size, (mz_uint8 *) pWrite_buf, pWrite_buf_cur, + &out_buf_size, + comp_remaining ? TINFL_FLAG_HAS_MORE_INPUT : 0); + read_buf_avail -= in_buf_size; + read_buf_ofs += in_buf_size; + + if (out_buf_size) { + if (pCallback(pOpaque, out_buf_ofs, pWrite_buf_cur, + out_buf_size) != out_buf_size) { + mz_zip_set_error(pZip, MZ_ZIP_WRITE_CALLBACK_FAILED); + status = TINFL_STATUS_FAILED; + break; + } + +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + file_crc32 = (mz_uint32) mz_crc32( + file_crc32, pWrite_buf_cur, out_buf_size); +# endif + if ((out_buf_ofs += out_buf_size) > + file_stat.m_uncomp_size) { + mz_zip_set_error(pZip, MZ_ZIP_DECOMPRESSION_FAILED); + status = TINFL_STATUS_FAILED; + break; + } + } + } while ((status == TINFL_STATUS_NEEDS_MORE_INPUT) || + (status == TINFL_STATUS_HAS_MORE_OUTPUT)); + } + } + + if ((status == TINFL_STATUS_DONE) && + (!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA))) { + /* Make sure the entire file was decompressed, and check its CRC. + */ + if (out_buf_ofs != file_stat.m_uncomp_size) { + mz_zip_set_error(pZip, MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE); + status = TINFL_STATUS_FAILED; + } +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + else if (file_crc32 != file_stat.m_crc32) { + mz_zip_set_error(pZip, MZ_ZIP_DECOMPRESSION_FAILED); + status = TINFL_STATUS_FAILED; + } +# endif + } + + if (!pZip->m_pState->m_pMem) + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + + if (pWrite_buf) + pZip->m_pFree(pZip->m_pAlloc_opaque, pWrite_buf); + + return status == TINFL_STATUS_DONE; +} + +mz_bool mz_zip_reader_extract_file_to_callback( + mz_zip_archive *pZip, const char *pFilename, + mz_file_write_func pCallback, void *pOpaque, mz_uint flags) { + mz_uint32 file_index; + if (!mz_zip_reader_locate_file_v2(pZip, pFilename, NULL, flags, + &file_index)) + return MZ_FALSE; + + return mz_zip_reader_extract_to_callback(pZip, file_index, + pCallback, pOpaque, flags); +} + +mz_zip_reader_extract_iter_state *mz_zip_reader_extract_iter_new( + mz_zip_archive *pZip, mz_uint file_index, mz_uint flags) { + mz_zip_reader_extract_iter_state *pState; + mz_uint32 local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pLocal_header = (mz_uint8 *) local_header_u32; + + /* Argument sanity check */ + if ((!pZip) || (!pZip->m_pState)) + return NULL; + + /* Allocate an iterator status structure */ + pState = (mz_zip_reader_extract_iter_state *) pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, + sizeof(mz_zip_reader_extract_iter_state)); + if (!pState) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + return NULL; + } + + /* Fetch file details */ + if (!mz_zip_reader_file_stat(pZip, file_index, + &pState->file_stat)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + /* Encryption and patch files are not supported. */ + if (pState->file_stat.m_bit_flag & + (MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_IS_ENCRYPTED | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_USES_STRONG_ENCRYPTION | + MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_COMPRESSED_PATCH_FLAG)) { + mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + /* This function only supports decompressing stored and deflate. */ + if ((!(flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) && + (pState->file_stat.m_method != 0) && + (pState->file_stat.m_method != MZ_DEFLATED)) { + mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + /* Init state - save args */ + pState->pZip = pZip; + pState->flags = flags; + + /* Init state - reset variables to defaults */ + pState->status = TINFL_STATUS_DONE; +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + pState->file_crc32 = MZ_CRC32_INIT; +# endif + pState->read_buf_ofs = 0; + pState->out_buf_ofs = 0; + pState->pRead_buf = NULL; + pState->pWrite_buf = NULL; + pState->out_blk_remain = 0; + + /* Read and parse the local directory entry. */ + pState->cur_file_ofs = pState->file_stat.m_local_header_ofs; + if (pZip->m_pRead(pZip->m_pIO_opaque, pState->cur_file_ofs, + pLocal_header, MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + pState->cur_file_ofs += + (mz_uint64) (MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS) + + MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_EXTRA_LEN_OFS); + if ((pState->cur_file_ofs + pState->file_stat.m_comp_size) > + pZip->m_archive_size) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + + /* Decompress the file either directly from memory or from a file + * input buffer. */ + if (pZip->m_pState->m_pMem) { + pState->pRead_buf = (mz_uint8 *) pZip->m_pState->m_pMem + + pState->cur_file_ofs; + pState->read_buf_size = pState->read_buf_avail = + pState->file_stat.m_comp_size; + pState->comp_remaining = pState->file_stat.m_comp_size; + } else { + if (!((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || + (!pState->file_stat.m_method))) { + /* Decompression required, therefore intermediate read buffer + * required */ + pState->read_buf_size = MZ_MIN( + pState->file_stat.m_comp_size, + (mz_uint64) MZ_ZIP_MAX_IO_BUF_SIZE); + if (NULL == (pState->pRead_buf = pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, + (size_t) pState->read_buf_size))) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + } else { + /* Decompression not required - we will be reading directly into + * user buffer, no temp buf required */ + pState->read_buf_size = 0; + } + pState->read_buf_avail = 0; + pState->comp_remaining = pState->file_stat.m_comp_size; + } + + if (!((flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || + (!pState->file_stat.m_method))) { + /* Decompression required, init decompressor */ + tinfl_init(&pState->inflator); + + /* Allocate write buffer */ + if (NULL == (pState->pWrite_buf = pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, TINFL_LZ_DICT_SIZE))) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + if (pState->pRead_buf) + pZip->m_pFree(pZip->m_pAlloc_opaque, pState->pRead_buf); + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + return NULL; + } + } + + return pState; +} + +mz_zip_reader_extract_iter_state *mz_zip_reader_extract_file_iter_new( + mz_zip_archive *pZip, const char *pFilename, mz_uint flags) { + mz_uint32 file_index; + + /* Locate file index by name */ + if (!mz_zip_reader_locate_file_v2(pZip, pFilename, NULL, flags, + &file_index)) + return NULL; + + /* Construct iterator */ + return mz_zip_reader_extract_iter_new(pZip, file_index, flags); +} + +size_t mz_zip_reader_extract_iter_read( + mz_zip_reader_extract_iter_state *pState, void *pvBuf, + size_t buf_size) { + size_t copied_to_caller = 0; + + /* Argument sanity check */ + if ((!pState) || (!pState->pZip) || (!pState->pZip->m_pState) || + (!pvBuf)) + return 0; + + if ((pState->flags & MZ_ZIP_FLAG_COMPRESSED_DATA) || + (!pState->file_stat.m_method)) { + /* The file is stored or the caller has requested the compressed + * data, calc amount to return. */ + copied_to_caller = (size_t) MZ_MIN(buf_size, + pState->comp_remaining); + + /* Zip is in memory....or requires reading from a file? */ + if (pState->pZip->m_pState->m_pMem) { + /* Copy data to caller's buffer */ + memcpy(pvBuf, pState->pRead_buf, copied_to_caller); + pState->pRead_buf = ((mz_uint8 *) pState->pRead_buf) + + copied_to_caller; + } else { + /* Read directly into caller's buffer */ + if (pState->pZip->m_pRead( + pState->pZip->m_pIO_opaque, pState->cur_file_ofs, pvBuf, + copied_to_caller) != copied_to_caller) { + /* Failed to read all that was asked for, flag failure and + * alert user */ + mz_zip_set_error(pState->pZip, MZ_ZIP_FILE_READ_FAILED); + pState->status = TINFL_STATUS_FAILED; + copied_to_caller = 0; + } + } + +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + /* Compute CRC if not returning compressed data only */ + if (!(pState->flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) + pState->file_crc32 = (mz_uint32) mz_crc32( + pState->file_crc32, (const mz_uint8 *) pvBuf, + copied_to_caller); +# endif + + /* Advance offsets, dec counters */ + pState->cur_file_ofs += copied_to_caller; + pState->out_buf_ofs += copied_to_caller; + pState->comp_remaining -= copied_to_caller; + } else { + do { + /* Calc ptr to write buffer - given current output pos and block + * size */ + mz_uint8 *pWrite_buf_cur = (mz_uint8 *) pState->pWrite_buf + + (pState->out_buf_ofs & + (TINFL_LZ_DICT_SIZE - 1)); + + /* Calc max output size - given current output pos and block + * size */ + size_t in_buf_size, out_buf_size = TINFL_LZ_DICT_SIZE - + (pState->out_buf_ofs & + (TINFL_LZ_DICT_SIZE - 1)); + + if (!pState->out_blk_remain) { + /* Read more data from file if none available (and reading + * from file) */ + if ((!pState->read_buf_avail) && + (!pState->pZip->m_pState->m_pMem)) { + /* Calc read size */ + pState->read_buf_avail = MZ_MIN(pState->read_buf_size, + pState->comp_remaining); + if (pState->pZip->m_pRead( + pState->pZip->m_pIO_opaque, pState->cur_file_ofs, + pState->pRead_buf, + (size_t) pState->read_buf_avail) != + pState->read_buf_avail) { + mz_zip_set_error(pState->pZip, MZ_ZIP_FILE_READ_FAILED); + pState->status = TINFL_STATUS_FAILED; + break; + } + + /* Advance offsets, dec counters */ + pState->cur_file_ofs += pState->read_buf_avail; + pState->comp_remaining -= pState->read_buf_avail; + pState->read_buf_ofs = 0; + } + + /* Perform decompression */ + in_buf_size = (size_t) pState->read_buf_avail; + pState->status = tinfl_decompress( + &pState->inflator, + (const mz_uint8 *) pState->pRead_buf + + pState->read_buf_ofs, + &in_buf_size, (mz_uint8 *) pState->pWrite_buf, + pWrite_buf_cur, &out_buf_size, + pState->comp_remaining ? TINFL_FLAG_HAS_MORE_INPUT : 0); + pState->read_buf_avail -= in_buf_size; + pState->read_buf_ofs += in_buf_size; + + /* Update current output block size remaining */ + pState->out_blk_remain = out_buf_size; + } + + if (pState->out_blk_remain) { + /* Calc amount to return. */ + size_t to_copy = MZ_MIN((buf_size - copied_to_caller), + pState->out_blk_remain); + + /* Copy data to caller's buffer */ + memcpy((mz_uint8 *) pvBuf + copied_to_caller, pWrite_buf_cur, + to_copy); + +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + /* Perform CRC */ + pState->file_crc32 = (mz_uint32) mz_crc32( + pState->file_crc32, pWrite_buf_cur, to_copy); +# endif + + /* Decrement data consumed from block */ + pState->out_blk_remain -= to_copy; + + /* Inc output offset, while performing sanity check */ + if ((pState->out_buf_ofs += to_copy) > + pState->file_stat.m_uncomp_size) { + mz_zip_set_error(pState->pZip, MZ_ZIP_DECOMPRESSION_FAILED); + pState->status = TINFL_STATUS_FAILED; + break; + } + + /* Increment counter of data copied to caller */ + copied_to_caller += to_copy; + } + } while ((copied_to_caller < buf_size) && + ((pState->status == TINFL_STATUS_NEEDS_MORE_INPUT) || + (pState->status == TINFL_STATUS_HAS_MORE_OUTPUT))); + } + + /* Return how many bytes were copied into user buffer */ + return copied_to_caller; +} + +mz_bool mz_zip_reader_extract_iter_free( + mz_zip_reader_extract_iter_state *pState) { + int status; + + /* Argument sanity check */ + if ((!pState) || (!pState->pZip) || (!pState->pZip->m_pState)) + return MZ_FALSE; + + /* Was decompression completed and requested? */ + if ((pState->status == TINFL_STATUS_DONE) && + (!(pState->flags & MZ_ZIP_FLAG_COMPRESSED_DATA))) { + /* Make sure the entire file was decompressed, and check its CRC. + */ + if (pState->out_buf_ofs != pState->file_stat.m_uncomp_size) { + mz_zip_set_error(pState->pZip, + MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE); + pState->status = TINFL_STATUS_FAILED; + } +# ifndef MINIZ_DISABLE_ZIP_READER_CRC32_CHECKS + else if (pState->file_crc32 != pState->file_stat.m_crc32) { + mz_zip_set_error(pState->pZip, MZ_ZIP_DECOMPRESSION_FAILED); + pState->status = TINFL_STATUS_FAILED; + } +# endif + } + + /* Free buffers */ + if (!pState->pZip->m_pState->m_pMem) + pState->pZip->m_pFree(pState->pZip->m_pAlloc_opaque, + pState->pRead_buf); + if (pState->pWrite_buf) + pState->pZip->m_pFree(pState->pZip->m_pAlloc_opaque, + pState->pWrite_buf); + + /* Save status */ + status = pState->status; + + /* Free context */ + pState->pZip->m_pFree(pState->pZip->m_pAlloc_opaque, pState); + + return status == TINFL_STATUS_DONE; +} + +# ifndef MINIZ_NO_STDIO +static size_t mz_zip_file_write_callback(void *pOpaque, mz_uint64 ofs, + const void *pBuf, size_t n) { + (void) ofs; + + return MZ_FWRITE(pBuf, 1, n, (MZ_FILE *) pOpaque); +} + +mz_bool mz_zip_reader_extract_to_file(mz_zip_archive *pZip, + mz_uint file_index, + const char *pDst_filename, + mz_uint flags) { + mz_bool status; + mz_zip_archive_file_stat file_stat; + MZ_FILE *pFile; + + if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) + return MZ_FALSE; + + if ((file_stat.m_is_directory) || (!file_stat.m_is_supported)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_FEATURE); + + pFile = MZ_FOPEN(pDst_filename, "wb"); + if (!pFile) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + + status = mz_zip_reader_extract_to_callback( + pZip, file_index, mz_zip_file_write_callback, pFile, flags); + + if (MZ_FCLOSE(pFile) == EOF) { + if (status) + mz_zip_set_error(pZip, MZ_ZIP_FILE_CLOSE_FAILED); + + status = MZ_FALSE; + } + +# if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_STDIO) + if (status) + mz_zip_set_file_times(pDst_filename, file_stat.m_time, + file_stat.m_time); +# endif + + return status; +} + +mz_bool mz_zip_reader_extract_file_to_file( + mz_zip_archive *pZip, const char *pArchive_filename, + const char *pDst_filename, mz_uint flags) { + mz_uint32 file_index; + if (!mz_zip_reader_locate_file_v2(pZip, pArchive_filename, NULL, + flags, &file_index)) + return MZ_FALSE; + + return mz_zip_reader_extract_to_file(pZip, file_index, + pDst_filename, flags); +} + +mz_bool mz_zip_reader_extract_to_cfile(mz_zip_archive *pZip, + mz_uint file_index, + MZ_FILE *pFile, + mz_uint flags) { + mz_zip_archive_file_stat file_stat; + + if (!mz_zip_reader_file_stat(pZip, file_index, &file_stat)) + return MZ_FALSE; + + if ((file_stat.m_is_directory) || (!file_stat.m_is_supported)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_FEATURE); + + return mz_zip_reader_extract_to_callback( + pZip, file_index, mz_zip_file_write_callback, pFile, flags); +} + +mz_bool mz_zip_reader_extract_file_to_cfile( + mz_zip_archive *pZip, const char *pArchive_filename, + MZ_FILE *pFile, mz_uint flags) { + mz_uint32 file_index; + if (!mz_zip_reader_locate_file_v2(pZip, pArchive_filename, NULL, + flags, &file_index)) + return MZ_FALSE; + + return mz_zip_reader_extract_to_cfile(pZip, file_index, pFile, + flags); +} +# endif /* #ifndef MINIZ_NO_STDIO */ + +static size_t mz_zip_compute_crc32_callback(void *pOpaque, + mz_uint64 file_ofs, + const void *pBuf, + size_t n) { + mz_uint32 *p = (mz_uint32 *) pOpaque; + (void) file_ofs; + *p = (mz_uint32) mz_crc32(*p, (const mz_uint8 *) pBuf, n); + return n; +} + +mz_bool mz_zip_validate_file(mz_zip_archive *pZip, mz_uint file_index, + mz_uint flags) { + mz_zip_archive_file_stat file_stat; + mz_zip_internal_state *pState; + const mz_uint8 *pCentral_dir_header; + mz_bool found_zip64_ext_data_in_cdir = MZ_FALSE; + mz_bool found_zip64_ext_data_in_ldir = MZ_FALSE; + mz_uint32 local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pLocal_header = (mz_uint8 *) local_header_u32; + mz_uint64 local_header_ofs = 0; + mz_uint32 local_header_filename_len, local_header_extra_len, + local_header_crc32; + mz_uint64 local_header_comp_size, local_header_uncomp_size; + mz_uint32 uncomp_crc32 = MZ_CRC32_INIT; + mz_bool has_data_descriptor; + mz_uint32 local_header_bit_flags; + + mz_zip_array file_data_array; + mz_zip_array_init(&file_data_array, 1); + + if ((!pZip) || (!pZip->m_pState) || (!pZip->m_pAlloc) || + (!pZip->m_pFree) || (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (file_index > pZip->m_total_files) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + + pCentral_dir_header = mz_zip_get_cdh(pZip, file_index); + + if (!mz_zip_file_stat_internal(pZip, file_index, + pCentral_dir_header, &file_stat, + &found_zip64_ext_data_in_cdir)) + return MZ_FALSE; + + /* A directory or zero length file */ + if ((file_stat.m_is_directory) || (!file_stat.m_uncomp_size)) + return MZ_TRUE; + + /* Encryption and patch files are not supported. */ + if (file_stat.m_is_encrypted) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_ENCRYPTION); + + /* This function only supports stored and deflate. */ + if ((file_stat.m_method != 0) && + (file_stat.m_method != MZ_DEFLATED)) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_METHOD); + + if (!file_stat.m_is_supported) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_FEATURE); + + /* Read and parse the local directory entry. */ + local_header_ofs = file_stat.m_local_header_ofs; + if (pZip->m_pRead(pZip->m_pIO_opaque, local_header_ofs, + pLocal_header, MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + local_header_filename_len = MZ_READ_LE16( + pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS); + local_header_extra_len = MZ_READ_LE16(pLocal_header + + MZ_ZIP_LDH_EXTRA_LEN_OFS); + local_header_comp_size = MZ_READ_LE32( + pLocal_header + MZ_ZIP_LDH_COMPRESSED_SIZE_OFS); + local_header_uncomp_size = MZ_READ_LE32( + pLocal_header + MZ_ZIP_LDH_DECOMPRESSED_SIZE_OFS); + local_header_crc32 = MZ_READ_LE32(pLocal_header + + MZ_ZIP_LDH_CRC32_OFS); + local_header_bit_flags = MZ_READ_LE16(pLocal_header + + MZ_ZIP_LDH_BIT_FLAG_OFS); + has_data_descriptor = (local_header_bit_flags & 8) != 0; + + if (local_header_filename_len != strlen(file_stat.m_filename)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if ((local_header_ofs + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + local_header_filename_len + local_header_extra_len + + file_stat.m_comp_size) > pZip->m_archive_size) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if (!mz_zip_array_resize( + pZip, &file_data_array, + MZ_MAX(local_header_filename_len, local_header_extra_len), + MZ_FALSE)) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + goto handle_failure; + } + + if (local_header_filename_len) { + if (pZip->m_pRead(pZip->m_pIO_opaque, + local_header_ofs + MZ_ZIP_LOCAL_DIR_HEADER_SIZE, + file_data_array.m_p, + local_header_filename_len) != + local_header_filename_len) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + goto handle_failure; + } + + /* I've seen 1 archive that had the same pathname, but used + * backslashes in the local dir and forward slashes in the central + * dir. Do we care about this? For now, this case will fail + * validation. */ + if (memcmp(file_stat.m_filename, file_data_array.m_p, + local_header_filename_len) != 0) { + mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED); + goto handle_failure; + } + } + + if ((local_header_extra_len) && + ((local_header_comp_size == MZ_UINT32_MAX) || + (local_header_uncomp_size == MZ_UINT32_MAX))) { + mz_uint32 extra_size_remaining = local_header_extra_len; + const mz_uint8 *pExtra_data = (const mz_uint8 *) + file_data_array.m_p; + + if (pZip->m_pRead(pZip->m_pIO_opaque, + local_header_ofs + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + local_header_filename_len, + file_data_array.m_p, local_header_extra_len) != + local_header_extra_len) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + goto handle_failure; + } + + do { + mz_uint32 field_id, field_data_size, field_total_size; + + if (extra_size_remaining < (sizeof(mz_uint16) * 2)) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + goto handle_failure; + } + + field_id = MZ_READ_LE16(pExtra_data); + field_data_size = MZ_READ_LE16(pExtra_data + sizeof(mz_uint16)); + field_total_size = field_data_size + sizeof(mz_uint16) * 2; + + if (field_total_size > extra_size_remaining) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + goto handle_failure; + } + + if (field_id == MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) { + const mz_uint8 *pSrc_field_data = pExtra_data + + sizeof(mz_uint32); + + if (field_data_size < sizeof(mz_uint64) * 2) { + mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + goto handle_failure; + } + + local_header_uncomp_size = MZ_READ_LE64(pSrc_field_data); + local_header_comp_size = MZ_READ_LE64(pSrc_field_data + + sizeof(mz_uint64)); + + found_zip64_ext_data_in_ldir = MZ_TRUE; + break; + } + + pExtra_data += field_total_size; + extra_size_remaining -= field_total_size; + } while (extra_size_remaining); + } + + /* TODO: parse local header extra data when local_header_comp_size + * is 0xFFFFFFFF! (big_descriptor.zip) */ + /* I've seen zips in the wild with the data descriptor bit set, but + * proper local header values and bogus data descriptors */ + if ((has_data_descriptor) && (!local_header_comp_size) && + (!local_header_crc32)) { + mz_uint8 descriptor_buf[32]; + mz_bool has_id; + const mz_uint8 *pSrc; + mz_uint32 file_crc32; + mz_uint64 comp_size = 0, uncomp_size = 0; + + mz_uint32 num_descriptor_uint32s = + ((pState->m_zip64) || (found_zip64_ext_data_in_ldir)) ? 6 : 4; + + if (pZip->m_pRead( + pZip->m_pIO_opaque, + local_header_ofs + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + local_header_filename_len + local_header_extra_len + + file_stat.m_comp_size, + descriptor_buf, + sizeof(mz_uint32) * num_descriptor_uint32s) != + (sizeof(mz_uint32) * num_descriptor_uint32s)) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + goto handle_failure; + } + + has_id = (MZ_READ_LE32(descriptor_buf) == + MZ_ZIP_DATA_DESCRIPTOR_ID); + pSrc = has_id ? (descriptor_buf + sizeof(mz_uint32)) + : descriptor_buf; + + file_crc32 = MZ_READ_LE32(pSrc); + + if ((pState->m_zip64) || (found_zip64_ext_data_in_ldir)) { + comp_size = MZ_READ_LE64(pSrc + sizeof(mz_uint32)); + uncomp_size = MZ_READ_LE64(pSrc + sizeof(mz_uint32) + + sizeof(mz_uint64)); + } else { + comp_size = MZ_READ_LE32(pSrc + sizeof(mz_uint32)); + uncomp_size = MZ_READ_LE32(pSrc + sizeof(mz_uint32) + + sizeof(mz_uint32)); + } + + if ((file_crc32 != file_stat.m_crc32) || + (comp_size != file_stat.m_comp_size) || + (uncomp_size != file_stat.m_uncomp_size)) { + mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED); + goto handle_failure; + } + } else { + if ((local_header_crc32 != file_stat.m_crc32) || + (local_header_comp_size != file_stat.m_comp_size) || + (local_header_uncomp_size != file_stat.m_uncomp_size)) { + mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED); + goto handle_failure; + } + } + + mz_zip_array_clear(pZip, &file_data_array); + + if ((flags & MZ_ZIP_FLAG_VALIDATE_HEADERS_ONLY) == 0) { + if (!mz_zip_reader_extract_to_callback( + pZip, file_index, mz_zip_compute_crc32_callback, + &uncomp_crc32, 0)) + return MZ_FALSE; + + /* 1 more check to be sure, although the extract checks too. */ + if (uncomp_crc32 != file_stat.m_crc32) { + mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED); + return MZ_FALSE; + } + } + + return MZ_TRUE; + +handle_failure: + mz_zip_array_clear(pZip, &file_data_array); + return MZ_FALSE; +} + +mz_bool mz_zip_validate_archive(mz_zip_archive *pZip, mz_uint flags) { + mz_zip_internal_state *pState; + mz_uint32 i; + + if ((!pZip) || (!pZip->m_pState) || (!pZip->m_pAlloc) || + (!pZip->m_pFree) || (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + + /* Basic sanity checks */ + if (!pState->m_zip64) { + if (pZip->m_total_files > MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + + if (pZip->m_archive_size > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + } else { + if (pState->m_central_dir.m_size >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + } + + for (i = 0; i < pZip->m_total_files; i++) { + if (MZ_ZIP_FLAG_VALIDATE_LOCATE_FILE_FLAG & flags) { + mz_uint32 found_index; + mz_zip_archive_file_stat stat; + + if (!mz_zip_reader_file_stat(pZip, i, &stat)) + return MZ_FALSE; + + if (!mz_zip_reader_locate_file_v2(pZip, stat.m_filename, NULL, + 0, &found_index)) + return MZ_FALSE; + + /* This check can fail if there are duplicate filenames in the + * archive (which we don't check for when writing - that's up to + * the user) */ + if (found_index != i) + return mz_zip_set_error(pZip, MZ_ZIP_VALIDATION_FAILED); + } + + if (!mz_zip_validate_file(pZip, i, flags)) + return MZ_FALSE; + } + + return MZ_TRUE; +} + +mz_bool mz_zip_validate_mem_archive(const void *pMem, size_t size, + mz_uint flags, + mz_zip_error *pErr) { + mz_bool success = MZ_TRUE; + mz_zip_archive zip; + mz_zip_error actual_err = MZ_ZIP_NO_ERROR; + + if ((!pMem) || (!size)) { + if (pErr) + *pErr = MZ_ZIP_INVALID_PARAMETER; + return MZ_FALSE; + } + + mz_zip_zero_struct(&zip); + + if (!mz_zip_reader_init_mem(&zip, pMem, size, flags)) { + if (pErr) + *pErr = zip.m_last_error; + return MZ_FALSE; + } + + if (!mz_zip_validate_archive(&zip, flags)) { + actual_err = zip.m_last_error; + success = MZ_FALSE; + } + + if (!mz_zip_reader_end_internal(&zip, success)) { + if (!actual_err) + actual_err = zip.m_last_error; + success = MZ_FALSE; + } + + if (pErr) + *pErr = actual_err; + + return success; +} + +# ifndef MINIZ_NO_STDIO +mz_bool mz_zip_validate_file_archive(const char *pFilename, + mz_uint flags, + mz_zip_error *pErr) { + mz_bool success = MZ_TRUE; + mz_zip_archive zip; + mz_zip_error actual_err = MZ_ZIP_NO_ERROR; + + if (!pFilename) { + if (pErr) + *pErr = MZ_ZIP_INVALID_PARAMETER; + return MZ_FALSE; + } + + mz_zip_zero_struct(&zip); + + if (!mz_zip_reader_init_file_v2(&zip, pFilename, flags, 0, 0)) { + if (pErr) + *pErr = zip.m_last_error; + return MZ_FALSE; + } + + if (!mz_zip_validate_archive(&zip, flags)) { + actual_err = zip.m_last_error; + success = MZ_FALSE; + } + + if (!mz_zip_reader_end_internal(&zip, success)) { + if (!actual_err) + actual_err = zip.m_last_error; + success = MZ_FALSE; + } + + if (pErr) + *pErr = actual_err; + + return success; +} +# endif /* #ifndef MINIZ_NO_STDIO */ + +/* ------------------- .ZIP archive writing */ + +# ifndef MINIZ_NO_ARCHIVE_WRITING_APIS + +static MZ_FORCEINLINE void mz_write_le16(mz_uint8 *p, mz_uint16 v) { + p[0] = (mz_uint8) v; + p[1] = (mz_uint8) (v >> 8); +} +static MZ_FORCEINLINE void mz_write_le32(mz_uint8 *p, mz_uint32 v) { + p[0] = (mz_uint8) v; + p[1] = (mz_uint8) (v >> 8); + p[2] = (mz_uint8) (v >> 16); + p[3] = (mz_uint8) (v >> 24); +} +static MZ_FORCEINLINE void mz_write_le64(mz_uint8 *p, mz_uint64 v) { + mz_write_le32(p, (mz_uint32) v); + mz_write_le32(p + sizeof(mz_uint32), (mz_uint32) (v >> 32)); +} + +# define MZ_WRITE_LE16(p, v) \ + mz_write_le16((mz_uint8 *) (p), (mz_uint16) (v)) +# define MZ_WRITE_LE32(p, v) \ + mz_write_le32((mz_uint8 *) (p), (mz_uint32) (v)) +# define MZ_WRITE_LE64(p, v) \ + mz_write_le64((mz_uint8 *) (p), (mz_uint64) (v)) + +static size_t mz_zip_heap_write_func(void *pOpaque, + mz_uint64 file_ofs, + const void *pBuf, size_t n) { + mz_zip_archive *pZip = (mz_zip_archive *) pOpaque; + mz_zip_internal_state *pState = pZip->m_pState; + mz_uint64 new_size = MZ_MAX(file_ofs + n, pState->m_mem_size); + + if (!n) + return 0; + + /* An allocation this big is likely to just fail on 32-bit systems, + * so don't even go there. */ + if ((sizeof(size_t) == sizeof(mz_uint32)) && + (new_size > 0x7FFFFFFF)) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_TOO_LARGE); + return 0; + } + + if (new_size > pState->m_mem_capacity) { + void *pNew_block; + size_t new_capacity = MZ_MAX(64, pState->m_mem_capacity); + + while (new_capacity < new_size) new_capacity *= 2; + + if (NULL == (pNew_block = pZip->m_pRealloc(pZip->m_pAlloc_opaque, + pState->m_pMem, 1, + new_capacity))) { + mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + return 0; + } + + pState->m_pMem = pNew_block; + pState->m_mem_capacity = new_capacity; + } + memcpy((mz_uint8 *) pState->m_pMem + file_ofs, pBuf, n); + pState->m_mem_size = (size_t) new_size; + return n; +} + +static mz_bool mz_zip_writer_end_internal(mz_zip_archive *pZip, + mz_bool set_last_error) { + mz_zip_internal_state *pState; + mz_bool status = MZ_TRUE; + + if ((!pZip) || (!pZip->m_pState) || (!pZip->m_pAlloc) || + (!pZip->m_pFree) || + ((pZip->m_zip_mode != MZ_ZIP_MODE_WRITING) && + (pZip->m_zip_mode != + MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED))) { + if (set_last_error) + mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + return MZ_FALSE; + } + + pState = pZip->m_pState; + pZip->m_pState = NULL; + mz_zip_array_clear(pZip, &pState->m_central_dir); + mz_zip_array_clear(pZip, &pState->m_central_dir_offsets); + mz_zip_array_clear(pZip, &pState->m_sorted_central_dir_offsets); + +# ifndef MINIZ_NO_STDIO + if (pState->m_pFile) { + if (pZip->m_zip_type == MZ_ZIP_TYPE_FILE) { + if (MZ_FCLOSE(pState->m_pFile) == EOF) { + if (set_last_error) + mz_zip_set_error(pZip, MZ_ZIP_FILE_CLOSE_FAILED); + status = MZ_FALSE; + } + } + + pState->m_pFile = NULL; + } +# endif /* #ifndef MINIZ_NO_STDIO */ + + if ((pZip->m_pWrite == mz_zip_heap_write_func) && + (pState->m_pMem)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pState->m_pMem); + pState->m_pMem = NULL; + } + + pZip->m_pFree(pZip->m_pAlloc_opaque, pState); + pZip->m_zip_mode = MZ_ZIP_MODE_INVALID; + return status; +} + +mz_bool mz_zip_writer_init_v2(mz_zip_archive *pZip, + mz_uint64 existing_size, + mz_uint flags) { + mz_bool zip64 = (flags & MZ_ZIP_FLAG_WRITE_ZIP64) != 0; + + if ((!pZip) || (pZip->m_pState) || (!pZip->m_pWrite) || + (pZip->m_zip_mode != MZ_ZIP_MODE_INVALID)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) { + if (!pZip->m_pRead) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + } + + if (pZip->m_file_offset_alignment) { + /* Ensure user specified file offset alignment is a power of 2. */ + if (pZip->m_file_offset_alignment & + (pZip->m_file_offset_alignment - 1)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + } + + if (!pZip->m_pAlloc) + pZip->m_pAlloc = miniz_def_alloc_func; + if (!pZip->m_pFree) + pZip->m_pFree = miniz_def_free_func; + if (!pZip->m_pRealloc) + pZip->m_pRealloc = miniz_def_realloc_func; + + pZip->m_archive_size = existing_size; + pZip->m_central_directory_file_ofs = 0; + pZip->m_total_files = 0; + + if (NULL == + (pZip->m_pState = (mz_zip_internal_state *) pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, sizeof(mz_zip_internal_state)))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + memset(pZip->m_pState, 0, sizeof(mz_zip_internal_state)); + + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE(&pZip->m_pState->m_central_dir, + sizeof(mz_uint8)); + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE( + &pZip->m_pState->m_central_dir_offsets, sizeof(mz_uint32)); + MZ_ZIP_ARRAY_SET_ELEMENT_SIZE( + &pZip->m_pState->m_sorted_central_dir_offsets, + sizeof(mz_uint32)); + + pZip->m_pState->m_zip64 = zip64; + pZip->m_pState->m_zip64_has_extended_info_fields = zip64; + + pZip->m_zip_type = MZ_ZIP_TYPE_USER; + pZip->m_zip_mode = MZ_ZIP_MODE_WRITING; + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_init(mz_zip_archive *pZip, + mz_uint64 existing_size) { + return mz_zip_writer_init_v2(pZip, existing_size, 0); +} + +mz_bool mz_zip_writer_init_heap_v2( + mz_zip_archive *pZip, size_t size_to_reserve_at_beginning, + size_t initial_allocation_size, mz_uint flags) { + pZip->m_pWrite = mz_zip_heap_write_func; + pZip->m_pNeeds_keepalive = NULL; + + if (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) + pZip->m_pRead = mz_zip_mem_read_func; + + pZip->m_pIO_opaque = pZip; + + if (!mz_zip_writer_init_v2(pZip, size_to_reserve_at_beginning, + flags)) + return MZ_FALSE; + + pZip->m_zip_type = MZ_ZIP_TYPE_HEAP; + + if (0 != + (initial_allocation_size = MZ_MAX( + initial_allocation_size, size_to_reserve_at_beginning))) { + if (NULL == + (pZip->m_pState->m_pMem = pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, initial_allocation_size))) { + mz_zip_writer_end_internal(pZip, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + pZip->m_pState->m_mem_capacity = initial_allocation_size; + } + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_init_heap(mz_zip_archive *pZip, + size_t size_to_reserve_at_beginning, + size_t initial_allocation_size) { + return mz_zip_writer_init_heap_v2( + pZip, size_to_reserve_at_beginning, initial_allocation_size, 0); +} + +# ifndef MINIZ_NO_STDIO +static size_t mz_zip_file_write_func(void *pOpaque, + mz_uint64 file_ofs, + const void *pBuf, size_t n) { + mz_zip_archive *pZip = (mz_zip_archive *) pOpaque; + mz_int64 cur_ofs = MZ_FTELL64(pZip->m_pState->m_pFile); + + file_ofs += pZip->m_pState->m_file_archive_start_ofs; + + if (((mz_int64) file_ofs < 0) || + (((cur_ofs != (mz_int64) file_ofs)) && + (MZ_FSEEK64(pZip->m_pState->m_pFile, (mz_int64) file_ofs, + SEEK_SET)))) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_SEEK_FAILED); + return 0; + } + + return MZ_FWRITE(pBuf, 1, n, pZip->m_pState->m_pFile); +} + +mz_bool mz_zip_writer_init_file( + mz_zip_archive *pZip, const char *pFilename, + mz_uint64 size_to_reserve_at_beginning) { + return mz_zip_writer_init_file_v2(pZip, pFilename, + size_to_reserve_at_beginning, 0); +} + +mz_bool mz_zip_writer_init_file_v2( + mz_zip_archive *pZip, const char *pFilename, + mz_uint64 size_to_reserve_at_beginning, mz_uint flags) { + MZ_FILE *pFile; + + pZip->m_pWrite = mz_zip_file_write_func; + pZip->m_pNeeds_keepalive = NULL; + + if (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) + pZip->m_pRead = mz_zip_file_read_func; + + pZip->m_pIO_opaque = pZip; + + if (!mz_zip_writer_init_v2(pZip, size_to_reserve_at_beginning, + flags)) + return MZ_FALSE; + + if (NULL == + (pFile = MZ_FOPEN(pFilename, + (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) + ? "w+b" + : "wb"))) { + mz_zip_writer_end(pZip); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + } + + pZip->m_pState->m_pFile = pFile; + pZip->m_zip_type = MZ_ZIP_TYPE_FILE; + + if (size_to_reserve_at_beginning) { + mz_uint64 cur_ofs = 0; + char buf[4096]; + + MZ_CLEAR_ARR(buf); + + do { + size_t n = (size_t) MZ_MIN(sizeof(buf), + size_to_reserve_at_beginning); + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_ofs, buf, n) != n) { + mz_zip_writer_end(pZip); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + cur_ofs += n; + size_to_reserve_at_beginning -= n; + } while (size_to_reserve_at_beginning); + } + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_init_cfile(mz_zip_archive *pZip, MZ_FILE *pFile, + mz_uint flags) { + pZip->m_pWrite = mz_zip_file_write_func; + pZip->m_pNeeds_keepalive = NULL; + + if (flags & MZ_ZIP_FLAG_WRITE_ALLOW_READING) + pZip->m_pRead = mz_zip_file_read_func; + + pZip->m_pIO_opaque = pZip; + + if (!mz_zip_writer_init_v2(pZip, 0, flags)) + return MZ_FALSE; + + pZip->m_pState->m_pFile = pFile; + pZip->m_pState->m_file_archive_start_ofs = MZ_FTELL64( + pZip->m_pState->m_pFile); + pZip->m_zip_type = MZ_ZIP_TYPE_CFILE; + + return MZ_TRUE; +} +# endif /* #ifndef MINIZ_NO_STDIO */ + +mz_bool mz_zip_writer_init_from_reader_v2(mz_zip_archive *pZip, + const char *pFilename, + mz_uint flags) { + mz_zip_internal_state *pState; + + if ((!pZip) || (!pZip->m_pState) || + (pZip->m_zip_mode != MZ_ZIP_MODE_READING)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (flags & MZ_ZIP_FLAG_WRITE_ZIP64) { + /* We don't support converting a non-zip64 file to zip64 - this + * seems like more trouble than it's worth. (What about the + * existing 32-bit data descriptors that could follow the + * compressed data?) */ + if (!pZip->m_pState->m_zip64) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + } + + /* No sense in trying to write to an archive that's already at the + * support max size */ + if (pZip->m_pState->m_zip64) { + if (pZip->m_total_files == MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } else { + if (pZip->m_total_files == MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + + if ((pZip->m_archive_size + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_TOO_LARGE); + } + + pState = pZip->m_pState; + + if (pState->m_pFile) { +# ifdef MINIZ_NO_STDIO + (void) pFilename; + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); +# else + if (pZip->m_pIO_opaque != pZip) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (pZip->m_zip_type == MZ_ZIP_TYPE_FILE) { + if (!pFilename) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + /* Archive is being read from stdio and was originally opened + * only for reading. Try to reopen as writable. */ + if (NULL == (pState->m_pFile = MZ_FREOPEN(pFilename, "r+b", + pState->m_pFile))) { + /* The mz_zip_archive is now in a bogus state because + * pState->m_pFile is NULL, so just close it. */ + mz_zip_reader_end_internal(pZip, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + } + } + + pZip->m_pWrite = mz_zip_file_write_func; + pZip->m_pNeeds_keepalive = NULL; +# endif /* #ifdef MINIZ_NO_STDIO */ + } else if (pState->m_pMem) { + /* Archive lives in a memory block. Assume it's from the heap that + * we can resize using the realloc callback. */ + if (pZip->m_pIO_opaque != pZip) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState->m_mem_capacity = pState->m_mem_size; + pZip->m_pWrite = mz_zip_heap_write_func; + pZip->m_pNeeds_keepalive = NULL; + } + /* Archive is being read via a user provided read function - make + sure the user has specified a write function too. */ + else if (!pZip->m_pWrite) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + /* Start writing new files at the archive's current central + * directory location. */ + /* TODO: We could add a flag that lets the user start writing + * immediately AFTER the existing central dir - this would be safer. + */ + pZip->m_archive_size = pZip->m_central_directory_file_ofs; + pZip->m_central_directory_file_ofs = 0; + + /* Clear the sorted central dir offsets, they aren't useful or + * maintained now. */ + /* Even though we're now in write mode, files can still be extracted + * and verified, but file locates will be slow. */ + /* TODO: We could easily maintain the sorted central directory + * offsets. */ + mz_zip_array_clear(pZip, + &pZip->m_pState->m_sorted_central_dir_offsets); + + pZip->m_zip_mode = MZ_ZIP_MODE_WRITING; + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_init_from_reader(mz_zip_archive *pZip, + const char *pFilename) { + return mz_zip_writer_init_from_reader_v2(pZip, pFilename, 0); +} + +/* TODO: pArchive_name is a terrible name here! */ +mz_bool mz_zip_writer_add_mem(mz_zip_archive *pZip, + const char *pArchive_name, + const void *pBuf, size_t buf_size, + mz_uint level_and_flags) { + return mz_zip_writer_add_mem_ex(pZip, pArchive_name, pBuf, buf_size, + NULL, 0, level_and_flags, 0, 0); +} + +typedef struct { + mz_zip_archive *m_pZip; + mz_uint64 m_cur_archive_file_ofs; + mz_uint64 m_comp_size; +} mz_zip_writer_add_state; + +static mz_bool mz_zip_writer_add_put_buf_callback(const void *pBuf, + int len, + void *pUser) { + mz_zip_writer_add_state *pState = (mz_zip_writer_add_state *) pUser; + if ((int) pState->m_pZip->m_pWrite(pState->m_pZip->m_pIO_opaque, + pState->m_cur_archive_file_ofs, + pBuf, len) != len) + return MZ_FALSE; + + pState->m_cur_archive_file_ofs += len; + pState->m_comp_size += len; + return MZ_TRUE; +} + +# define MZ_ZIP64_MAX_LOCAL_EXTRA_FIELD_SIZE \ + (sizeof(mz_uint16) * 2 + sizeof(mz_uint64) * 2) +# define MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE \ + (sizeof(mz_uint16) * 2 + sizeof(mz_uint64) * 3) +static mz_uint32 mz_zip_writer_create_zip64_extra_data( + mz_uint8 *pBuf, mz_uint64 *pUncomp_size, mz_uint64 *pComp_size, + mz_uint64 *pLocal_header_ofs) { + mz_uint8 *pDst = pBuf; + mz_uint32 field_size = 0; + + MZ_WRITE_LE16(pDst + 0, + MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID); + MZ_WRITE_LE16(pDst + 2, 0); + pDst += sizeof(mz_uint16) * 2; + + if (pUncomp_size) { + MZ_WRITE_LE64(pDst, *pUncomp_size); + pDst += sizeof(mz_uint64); + field_size += sizeof(mz_uint64); + } + + if (pComp_size) { + MZ_WRITE_LE64(pDst, *pComp_size); + pDst += sizeof(mz_uint64); + field_size += sizeof(mz_uint64); + } + + if (pLocal_header_ofs) { + MZ_WRITE_LE64(pDst, *pLocal_header_ofs); + pDst += sizeof(mz_uint64); + field_size += sizeof(mz_uint64); + } + + MZ_WRITE_LE16(pBuf + 2, field_size); + + return (mz_uint32) (pDst - pBuf); +} + +static mz_bool mz_zip_writer_create_local_dir_header( + mz_zip_archive *pZip, mz_uint8 *pDst, mz_uint16 filename_size, + mz_uint16 extra_size, mz_uint64 uncomp_size, mz_uint64 comp_size, + mz_uint32 uncomp_crc32, mz_uint16 method, mz_uint16 bit_flags, + mz_uint16 dos_time, mz_uint16 dos_date) { + (void) pZip; + memset(pDst, 0, MZ_ZIP_LOCAL_DIR_HEADER_SIZE); + MZ_WRITE_LE32(pDst + MZ_ZIP_LDH_SIG_OFS, + MZ_ZIP_LOCAL_DIR_HEADER_SIG); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_VERSION_NEEDED_OFS, + method ? 20 : 0); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_BIT_FLAG_OFS, bit_flags); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_METHOD_OFS, method); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_FILE_TIME_OFS, dos_time); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_FILE_DATE_OFS, dos_date); + MZ_WRITE_LE32(pDst + MZ_ZIP_LDH_CRC32_OFS, uncomp_crc32); + MZ_WRITE_LE32(pDst + MZ_ZIP_LDH_COMPRESSED_SIZE_OFS, + MZ_MIN(comp_size, MZ_UINT32_MAX)); + MZ_WRITE_LE32(pDst + MZ_ZIP_LDH_DECOMPRESSED_SIZE_OFS, + MZ_MIN(uncomp_size, MZ_UINT32_MAX)); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_FILENAME_LEN_OFS, filename_size); + MZ_WRITE_LE16(pDst + MZ_ZIP_LDH_EXTRA_LEN_OFS, extra_size); + return MZ_TRUE; +} + +static mz_bool mz_zip_writer_create_central_dir_header( + mz_zip_archive *pZip, mz_uint8 *pDst, mz_uint16 filename_size, + mz_uint16 extra_size, mz_uint16 comment_size, + mz_uint64 uncomp_size, mz_uint64 comp_size, + mz_uint32 uncomp_crc32, mz_uint16 method, mz_uint16 bit_flags, + mz_uint16 dos_time, mz_uint16 dos_date, + mz_uint64 local_header_ofs, mz_uint32 ext_attributes) { + (void) pZip; + memset(pDst, 0, MZ_ZIP_CENTRAL_DIR_HEADER_SIZE); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_SIG_OFS, + MZ_ZIP_CENTRAL_DIR_HEADER_SIG); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_VERSION_NEEDED_OFS, + method ? 20 : 0); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_BIT_FLAG_OFS, bit_flags); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_METHOD_OFS, method); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_FILE_TIME_OFS, dos_time); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_FILE_DATE_OFS, dos_date); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_CRC32_OFS, uncomp_crc32); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS, + MZ_MIN(comp_size, MZ_UINT32_MAX)); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS, + MZ_MIN(uncomp_size, MZ_UINT32_MAX)); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_FILENAME_LEN_OFS, filename_size); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_EXTRA_LEN_OFS, extra_size); + MZ_WRITE_LE16(pDst + MZ_ZIP_CDH_COMMENT_LEN_OFS, comment_size); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_EXTERNAL_ATTR_OFS, ext_attributes); + MZ_WRITE_LE32(pDst + MZ_ZIP_CDH_LOCAL_HEADER_OFS, + MZ_MIN(local_header_ofs, MZ_UINT32_MAX)); + return MZ_TRUE; +} + +static mz_bool mz_zip_writer_add_to_central_dir( + mz_zip_archive *pZip, const char *pFilename, + mz_uint16 filename_size, const void *pExtra, mz_uint16 extra_size, + const void *pComment, mz_uint16 comment_size, + mz_uint64 uncomp_size, mz_uint64 comp_size, + mz_uint32 uncomp_crc32, mz_uint16 method, mz_uint16 bit_flags, + mz_uint16 dos_time, mz_uint16 dos_date, + mz_uint64 local_header_ofs, mz_uint32 ext_attributes, + const char *user_extra_data, mz_uint user_extra_data_len) { + mz_zip_internal_state *pState = pZip->m_pState; + mz_uint32 central_dir_ofs = (mz_uint32) + pState->m_central_dir.m_size; + size_t orig_central_dir_size = pState->m_central_dir.m_size; + mz_uint8 central_dir_header[MZ_ZIP_CENTRAL_DIR_HEADER_SIZE]; + + if (!pZip->m_pState->m_zip64) { + if (local_header_ofs > 0xFFFFFFFF) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_TOO_LARGE); + } + + /* miniz doesn't support central dirs >= MZ_UINT32_MAX bytes yet */ + if (((mz_uint64) pState->m_central_dir.m_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + filename_size + extra_size + + user_extra_data_len + comment_size) >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + + if (!mz_zip_writer_create_central_dir_header( + pZip, central_dir_header, filename_size, + (mz_uint16) (extra_size + user_extra_data_len), + comment_size, uncomp_size, comp_size, uncomp_crc32, method, + bit_flags, dos_time, dos_date, local_header_ofs, + ext_attributes)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if ((!mz_zip_array_push_back(pZip, &pState->m_central_dir, + central_dir_header, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE)) || + (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + pFilename, filename_size)) || + (!mz_zip_array_push_back(pZip, &pState->m_central_dir, pExtra, + extra_size)) || + (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + user_extra_data, + user_extra_data_len)) || + (!mz_zip_array_push_back(pZip, &pState->m_central_dir, pComment, + comment_size)) || + (!mz_zip_array_push_back(pZip, &pState->m_central_dir_offsets, + ¢ral_dir_ofs, 1))) { + /* Try to resize the central directory array back into its + * original state. */ + mz_zip_array_resize(pZip, &pState->m_central_dir, + orig_central_dir_size, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + return MZ_TRUE; +} + +static mz_bool mz_zip_writer_validate_archive_name( + const char *pArchive_name) { + /* Basic ZIP archive filename validity checks: Valid filenames + * cannot start with a forward slash, cannot contain a drive letter, + * and cannot use DOS-style backward slashes. */ + if (*pArchive_name == '/') + return MZ_FALSE; + + /* Making sure the name does not contain drive letters or DOS style + * backward slashes is the responsibility of the program using + * miniz*/ + + return MZ_TRUE; +} + +static mz_uint +mz_zip_writer_compute_padding_needed_for_file_alignment( + mz_zip_archive *pZip) { + mz_uint32 n; + if (!pZip->m_file_offset_alignment) + return 0; + n = (mz_uint32) (pZip->m_archive_size & + (pZip->m_file_offset_alignment - 1)); + return (mz_uint) ((pZip->m_file_offset_alignment - n) & + (pZip->m_file_offset_alignment - 1)); +} + +static mz_bool mz_zip_writer_write_zeros(mz_zip_archive *pZip, + mz_uint64 cur_file_ofs, + mz_uint32 n) { + char buf[4096]; + memset(buf, 0, MZ_MIN(sizeof(buf), n)); + while (n) { + mz_uint32 s = MZ_MIN(sizeof(buf), n); + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_file_ofs, buf, s) != s) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_file_ofs += s; + n -= s; + } + return MZ_TRUE; +} + +mz_bool mz_zip_writer_add_mem_ex( + mz_zip_archive *pZip, const char *pArchive_name, const void *pBuf, + size_t buf_size, const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags, mz_uint64 uncomp_size, + mz_uint32 uncomp_crc32) { + return mz_zip_writer_add_mem_ex_v2( + pZip, pArchive_name, pBuf, buf_size, pComment, comment_size, + level_and_flags, uncomp_size, uncomp_crc32, NULL, NULL, 0, NULL, + 0); +} + +mz_bool mz_zip_writer_add_mem_ex_v2( + mz_zip_archive *pZip, const char *pArchive_name, const void *pBuf, + size_t buf_size, const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags, mz_uint64 uncomp_size, + mz_uint32 uncomp_crc32, MZ_TIME_T *last_modified, + const char *user_extra_data, mz_uint user_extra_data_len, + const char *user_extra_data_central, + mz_uint user_extra_data_central_len) { + mz_uint16 method = 0, dos_time = 0, dos_date = 0; + mz_uint level, ext_attributes = 0, num_alignment_padding_bytes; + mz_uint64 local_dir_header_ofs = pZip->m_archive_size, + cur_archive_file_ofs = pZip->m_archive_size, + comp_size = 0; + size_t archive_name_size; + mz_uint8 local_dir_header[MZ_ZIP_LOCAL_DIR_HEADER_SIZE]; + tdefl_compressor *pComp = NULL; + mz_bool store_data_uncompressed; + mz_zip_internal_state *pState; + mz_uint8 *pExtra_data = NULL; + mz_uint32 extra_size = 0; + mz_uint8 extra_data[MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE]; + mz_uint16 bit_flags = 0; + + if ((int) level_and_flags < 0) + level_and_flags = MZ_DEFAULT_LEVEL; + + if (uncomp_size || + (buf_size && !(level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA))) + bit_flags |= MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR; + + if (!(level_and_flags & MZ_ZIP_FLAG_ASCII_FILENAME)) + bit_flags |= MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_UTF8; + + level = level_and_flags & 0xF; + store_data_uncompressed = + ((!level) || (level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA)); + + if ((!pZip) || (!pZip->m_pState) || + (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING) || + ((buf_size) && (!pBuf)) || (!pArchive_name) || + ((comment_size) && (!pComment)) || + (level > MZ_UBER_COMPRESSION)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + + if (pState->m_zip64) { + if (pZip->m_total_files == MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } else { + if (pZip->m_total_files == MZ_UINT16_MAX) { + pState->m_zip64 = MZ_TRUE; + /*return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); */ + } + if (((mz_uint64) buf_size > 0xFFFFFFFF) || + (uncomp_size > 0xFFFFFFFF)) { + pState->m_zip64 = MZ_TRUE; + /*return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); */ + } + } + + if ((!(level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) && + (uncomp_size)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!mz_zip_writer_validate_archive_name(pArchive_name)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_FILENAME); + +# ifndef MINIZ_NO_TIME + if (last_modified != NULL) { + mz_zip_time_t_to_dos_time(*last_modified, &dos_time, &dos_date); + } else { + MZ_TIME_T cur_time; + time(&cur_time); + mz_zip_time_t_to_dos_time(cur_time, &dos_time, &dos_date); + } +# endif /* #ifndef MINIZ_NO_TIME */ + + if (!(level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) { + uncomp_crc32 = (mz_uint32) mz_crc32( + MZ_CRC32_INIT, (const mz_uint8 *) pBuf, buf_size); + uncomp_size = buf_size; + if (uncomp_size <= 3) { + level = 0; + store_data_uncompressed = MZ_TRUE; + } + } + + archive_name_size = strlen(pArchive_name); + if (archive_name_size > MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_FILENAME); + + num_alignment_padding_bytes = + mz_zip_writer_compute_padding_needed_for_file_alignment(pZip); + + /* miniz doesn't support central dirs >= MZ_UINT32_MAX bytes yet */ + if (((mz_uint64) pState->m_central_dir.m_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + + MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE + comment_size) >= + MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + + if (!pState->m_zip64) { + /* Bail early if the archive would obviously become too large */ + if ((pZip->m_archive_size + num_alignment_padding_bytes + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + archive_name_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + + comment_size + user_extra_data_len + + pState->m_central_dir.m_size + + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE + + user_extra_data_central_len + + MZ_ZIP_DATA_DESCRIPTER_SIZE32) > 0xFFFFFFFF) { + pState->m_zip64 = MZ_TRUE; + /*return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); */ + } + } + + if ((archive_name_size) && + (pArchive_name[archive_name_size - 1] == '/')) { + /* Set DOS Subdirectory attribute bit. */ + ext_attributes |= MZ_ZIP_DOS_DIR_ATTRIBUTE_BITFLAG; + + /* Subdirectories cannot contain data. */ + if ((buf_size) || (uncomp_size)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + } + + /* Try to do any allocations before writing to the archive, so if an + * allocation fails the file remains unmodified. (A good idea if + * we're doing an in-place modification.) */ + if ((!mz_zip_array_ensure_room( + pZip, &pState->m_central_dir, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + + comment_size + + (pState->m_zip64 ? MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE + : 0))) || + (!mz_zip_array_ensure_room(pZip, &pState->m_central_dir_offsets, + 1))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + if ((!store_data_uncompressed) && (buf_size)) { + if (NULL == + (pComp = (tdefl_compressor *) pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, sizeof(tdefl_compressor)))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (!mz_zip_writer_write_zeros(pZip, cur_archive_file_ofs, + num_alignment_padding_bytes)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + return MZ_FALSE; + } + + local_dir_header_ofs += num_alignment_padding_bytes; + if (pZip->m_file_offset_alignment) { + MZ_ASSERT((local_dir_header_ofs & + (pZip->m_file_offset_alignment - 1)) == 0); + } + cur_archive_file_ofs += num_alignment_padding_bytes; + + MZ_CLEAR_ARR(local_dir_header); + + if (!store_data_uncompressed || + (level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA)) { + method = MZ_DEFLATED; + } + + if (pState->m_zip64) { + if (uncomp_size >= MZ_UINT32_MAX || + local_dir_header_ofs >= MZ_UINT32_MAX) { + pExtra_data = extra_data; + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, + (uncomp_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL, + (uncomp_size >= MZ_UINT32_MAX) ? &comp_size : NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) + ? &local_dir_header_ofs + : NULL); + } + + if (!mz_zip_writer_create_local_dir_header( + pZip, local_dir_header, (mz_uint16) archive_name_size, + (mz_uint16) (extra_size + user_extra_data_len), 0, 0, 0, + method, bit_flags, dos_time, dos_date)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, local_dir_header_ofs, + local_dir_header, sizeof(local_dir_header)) != + sizeof(local_dir_header)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += sizeof(local_dir_header); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + pArchive_name, + archive_name_size) != archive_name_size) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + cur_archive_file_ofs += archive_name_size; + + if (pExtra_data != NULL) { + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + extra_data, extra_size) != extra_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += extra_size; + } + } else { + if ((comp_size > MZ_UINT32_MAX) || + (cur_archive_file_ofs > MZ_UINT32_MAX)) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + if (!mz_zip_writer_create_local_dir_header( + pZip, local_dir_header, (mz_uint16) archive_name_size, + (mz_uint16) user_extra_data_len, 0, 0, 0, method, + bit_flags, dos_time, dos_date)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, local_dir_header_ofs, + local_dir_header, sizeof(local_dir_header)) != + sizeof(local_dir_header)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += sizeof(local_dir_header); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + pArchive_name, + archive_name_size) != archive_name_size) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + cur_archive_file_ofs += archive_name_size; + } + + if (user_extra_data_len > 0) { + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + user_extra_data, + user_extra_data_len) != user_extra_data_len) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += user_extra_data_len; + } + + if (store_data_uncompressed) { + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, pBuf, + buf_size) != buf_size) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_archive_file_ofs += buf_size; + comp_size = buf_size; + } else if (buf_size) { + mz_zip_writer_add_state state; + + state.m_pZip = pZip; + state.m_cur_archive_file_ofs = cur_archive_file_ofs; + state.m_comp_size = 0; + + if ((tdefl_init(pComp, mz_zip_writer_add_put_buf_callback, &state, + tdefl_create_comp_flags_from_zip_params( + level, -15, MZ_DEFAULT_STRATEGY)) != + TDEFL_STATUS_OKAY) || + (tdefl_compress_buffer(pComp, pBuf, buf_size, TDEFL_FINISH) != + TDEFL_STATUS_DONE)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + return mz_zip_set_error(pZip, MZ_ZIP_COMPRESSION_FAILED); + } + + comp_size = state.m_comp_size; + cur_archive_file_ofs = state.m_cur_archive_file_ofs; + } + + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + pComp = NULL; + + if (uncomp_size) { + mz_uint8 local_dir_footer[MZ_ZIP_DATA_DESCRIPTER_SIZE64]; + mz_uint32 local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE32; + + MZ_ASSERT(bit_flags & MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR); + + MZ_WRITE_LE32(local_dir_footer + 0, MZ_ZIP_DATA_DESCRIPTOR_ID); + MZ_WRITE_LE32(local_dir_footer + 4, uncomp_crc32); + if (pExtra_data == NULL) { + if (comp_size > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + + MZ_WRITE_LE32(local_dir_footer + 8, comp_size); + MZ_WRITE_LE32(local_dir_footer + 12, uncomp_size); + } else { + MZ_WRITE_LE64(local_dir_footer + 8, comp_size); + MZ_WRITE_LE64(local_dir_footer + 16, uncomp_size); + local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE64; + } + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + local_dir_footer, local_dir_footer_size) != + local_dir_footer_size) + return MZ_FALSE; + + cur_archive_file_ofs += local_dir_footer_size; + } + + if (pExtra_data != NULL) { + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, + (uncomp_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL, + (uncomp_size >= MZ_UINT32_MAX) ? &comp_size : NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) + ? &local_dir_header_ofs + : NULL); + } + + if (!mz_zip_writer_add_to_central_dir( + pZip, pArchive_name, (mz_uint16) archive_name_size, + pExtra_data, (mz_uint16) extra_size, pComment, comment_size, + uncomp_size, comp_size, uncomp_crc32, method, bit_flags, + dos_time, dos_date, local_dir_header_ofs, ext_attributes, + user_extra_data_central, user_extra_data_central_len)) + return MZ_FALSE; + + pZip->m_total_files++; + pZip->m_archive_size = cur_archive_file_ofs; + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_add_read_buf_callback( + mz_zip_archive *pZip, const char *pArchive_name, + mz_file_read_func read_callback, void *callback_opaque, + mz_uint64 max_size, const MZ_TIME_T *pFile_time, + const void *pComment, mz_uint16 comment_size, + mz_uint level_and_flags, const char *user_extra_data, + mz_uint user_extra_data_len, const char *user_extra_data_central, + mz_uint user_extra_data_central_len) { + mz_uint16 gen_flags; + mz_uint uncomp_crc32 = MZ_CRC32_INIT, level, + num_alignment_padding_bytes; + mz_uint16 method = 0, dos_time = 0, dos_date = 0, + ext_attributes = 0; + mz_uint64 local_dir_header_ofs, + cur_archive_file_ofs = pZip->m_archive_size, uncomp_size = 0, + comp_size = 0; + size_t archive_name_size; + mz_uint8 local_dir_header[MZ_ZIP_LOCAL_DIR_HEADER_SIZE]; + mz_uint8 *pExtra_data = NULL; + mz_uint32 extra_size = 0; + mz_uint8 extra_data[MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE]; + mz_zip_internal_state *pState; + mz_uint64 file_ofs = 0, cur_archive_header_file_ofs; + + if ((int) level_and_flags < 0) + level_and_flags = MZ_DEFAULT_LEVEL; + level = level_and_flags & 0xF; + + gen_flags = (level_and_flags & MZ_ZIP_FLAG_WRITE_HEADER_SET_SIZE) + ? 0 + : MZ_ZIP_LDH_BIT_FLAG_HAS_LOCATOR; + + if (!(level_and_flags & MZ_ZIP_FLAG_ASCII_FILENAME)) + gen_flags |= MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_UTF8; + + /* Sanity checks */ + if ((!pZip) || (!pZip->m_pState) || + (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING) || (!pArchive_name) || + ((comment_size) && (!pComment)) || + (level > MZ_UBER_COMPRESSION)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + + if ((!pState->m_zip64) && (max_size > MZ_UINT32_MAX)) { + /* Source file is too large for non-zip64 */ + /*return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); */ + pState->m_zip64 = MZ_TRUE; + } + + /* We could support this, but why? */ + if (level_and_flags & MZ_ZIP_FLAG_COMPRESSED_DATA) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!mz_zip_writer_validate_archive_name(pArchive_name)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_FILENAME); + + if (pState->m_zip64) { + if (pZip->m_total_files == MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } else { + if (pZip->m_total_files == MZ_UINT16_MAX) { + pState->m_zip64 = MZ_TRUE; + /*return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); */ + } + } + + archive_name_size = strlen(pArchive_name); + if (archive_name_size > MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_FILENAME); + + num_alignment_padding_bytes = + mz_zip_writer_compute_padding_needed_for_file_alignment(pZip); + + /* miniz doesn't support central dirs >= MZ_UINT32_MAX bytes yet */ + if (((mz_uint64) pState->m_central_dir.m_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + + MZ_ZIP64_MAX_CENTRAL_EXTRA_FIELD_SIZE + comment_size) >= + MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + + if (!pState->m_zip64) { + /* Bail early if the archive would obviously become too large */ + if ((pZip->m_archive_size + num_alignment_padding_bytes + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + archive_name_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + archive_name_size + + comment_size + user_extra_data_len + + pState->m_central_dir.m_size + + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE + 1024 + + MZ_ZIP_DATA_DESCRIPTER_SIZE32 + + user_extra_data_central_len) > 0xFFFFFFFF) { + pState->m_zip64 = MZ_TRUE; + /*return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); */ + } + } + +# ifndef MINIZ_NO_TIME + if (pFile_time) { + mz_zip_time_t_to_dos_time(*pFile_time, &dos_time, &dos_date); + } +# endif + + if (max_size <= 3) + level = 0; + + if (!mz_zip_writer_write_zeros(pZip, cur_archive_file_ofs, + num_alignment_padding_bytes)) { + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_archive_file_ofs += num_alignment_padding_bytes; + local_dir_header_ofs = cur_archive_file_ofs; + + if (pZip->m_file_offset_alignment) { + MZ_ASSERT((cur_archive_file_ofs & + (pZip->m_file_offset_alignment - 1)) == 0); + } + + if (max_size && level) { + method = MZ_DEFLATED; + } + + MZ_CLEAR_ARR(local_dir_header); + if (pState->m_zip64) { + if (max_size >= MZ_UINT32_MAX || + local_dir_header_ofs >= MZ_UINT32_MAX) { + pExtra_data = extra_data; + if (level_and_flags & MZ_ZIP_FLAG_WRITE_HEADER_SET_SIZE) + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, + (max_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL, + (max_size >= MZ_UINT32_MAX) ? &comp_size : NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) + ? &local_dir_header_ofs + : NULL); + else + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, NULL, NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) + ? &local_dir_header_ofs + : NULL); + } + + if (!mz_zip_writer_create_local_dir_header( + pZip, local_dir_header, (mz_uint16) archive_name_size, + (mz_uint16) (extra_size + user_extra_data_len), 0, 0, 0, + method, gen_flags, dos_time, dos_date)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + local_dir_header, sizeof(local_dir_header)) != + sizeof(local_dir_header)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += sizeof(local_dir_header); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + pArchive_name, + archive_name_size) != archive_name_size) { + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_archive_file_ofs += archive_name_size; + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + extra_data, extra_size) != extra_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += extra_size; + } else { + if ((comp_size > MZ_UINT32_MAX) || + (cur_archive_file_ofs > MZ_UINT32_MAX)) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + if (!mz_zip_writer_create_local_dir_header( + pZip, local_dir_header, (mz_uint16) archive_name_size, + (mz_uint16) user_extra_data_len, 0, 0, 0, method, + gen_flags, dos_time, dos_date)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + local_dir_header, sizeof(local_dir_header)) != + sizeof(local_dir_header)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += sizeof(local_dir_header); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + pArchive_name, + archive_name_size) != archive_name_size) { + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_archive_file_ofs += archive_name_size; + } + + if (user_extra_data_len > 0) { + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + user_extra_data, + user_extra_data_len) != user_extra_data_len) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_file_ofs += user_extra_data_len; + } + + if (max_size) { + void *pRead_buf = pZip->m_pAlloc(pZip->m_pAlloc_opaque, 1, + MZ_ZIP_MAX_IO_BUF_SIZE); + if (!pRead_buf) { + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (!level) { + while (1) { + size_t n = read_callback(callback_opaque, file_ofs, pRead_buf, + MZ_ZIP_MAX_IO_BUF_SIZE); + if (n == 0) + break; + + if ((n > MZ_ZIP_MAX_IO_BUF_SIZE) || + (file_ofs + n > max_size)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + pRead_buf, n) != n) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + file_ofs += n; + uncomp_crc32 = (mz_uint32) mz_crc32( + uncomp_crc32, (const mz_uint8 *) pRead_buf, n); + cur_archive_file_ofs += n; + } + uncomp_size = file_ofs; + comp_size = uncomp_size; + } else { + mz_bool result = MZ_FALSE; + mz_zip_writer_add_state state; + tdefl_compressor *pComp = (tdefl_compressor *) pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, sizeof(tdefl_compressor)); + if (!pComp) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + state.m_pZip = pZip; + state.m_cur_archive_file_ofs = cur_archive_file_ofs; + state.m_comp_size = 0; + + if (tdefl_init(pComp, mz_zip_writer_add_put_buf_callback, + &state, + tdefl_create_comp_flags_from_zip_params( + level, -15, MZ_DEFAULT_STRATEGY)) != + TDEFL_STATUS_OKAY) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + } + + for (;;) { + tdefl_status status; + tdefl_flush flush = TDEFL_NO_FLUSH; + + size_t n = read_callback(callback_opaque, file_ofs, pRead_buf, + MZ_ZIP_MAX_IO_BUF_SIZE); + if ((n > MZ_ZIP_MAX_IO_BUF_SIZE) || + (file_ofs + n > max_size)) { + mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + break; + } + + file_ofs += n; + uncomp_crc32 = (mz_uint32) mz_crc32( + uncomp_crc32, (const mz_uint8 *) pRead_buf, n); + + if (pZip->m_pNeeds_keepalive != NULL && + pZip->m_pNeeds_keepalive(pZip->m_pIO_opaque)) + flush = TDEFL_FULL_FLUSH; + + if (n == 0) + flush = TDEFL_FINISH; + + status = tdefl_compress_buffer(pComp, pRead_buf, n, flush); + if (status == TDEFL_STATUS_DONE) { + result = MZ_TRUE; + break; + } else if (status != TDEFL_STATUS_OKAY) { + mz_zip_set_error(pZip, MZ_ZIP_COMPRESSION_FAILED); + break; + } + } + + pZip->m_pFree(pZip->m_pAlloc_opaque, pComp); + + if (!result) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + return MZ_FALSE; + } + + uncomp_size = file_ofs; + comp_size = state.m_comp_size; + cur_archive_file_ofs = state.m_cur_archive_file_ofs; + } + + pZip->m_pFree(pZip->m_pAlloc_opaque, pRead_buf); + } + + if (!(level_and_flags & MZ_ZIP_FLAG_WRITE_HEADER_SET_SIZE)) { + mz_uint8 local_dir_footer[MZ_ZIP_DATA_DESCRIPTER_SIZE64]; + mz_uint32 local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE32; + + MZ_WRITE_LE32(local_dir_footer + 0, MZ_ZIP_DATA_DESCRIPTOR_ID); + MZ_WRITE_LE32(local_dir_footer + 4, uncomp_crc32); + if (pExtra_data == NULL) { + if (comp_size > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + + MZ_WRITE_LE32(local_dir_footer + 8, comp_size); + MZ_WRITE_LE32(local_dir_footer + 12, uncomp_size); + } else { + MZ_WRITE_LE64(local_dir_footer + 8, comp_size); + MZ_WRITE_LE64(local_dir_footer + 16, uncomp_size); + local_dir_footer_size = MZ_ZIP_DATA_DESCRIPTER_SIZE64; + } + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, + local_dir_footer, local_dir_footer_size) != + local_dir_footer_size) + return MZ_FALSE; + + cur_archive_file_ofs += local_dir_footer_size; + } + + if (level_and_flags & MZ_ZIP_FLAG_WRITE_HEADER_SET_SIZE) { + if (pExtra_data != NULL) { + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, + (max_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL, + (max_size >= MZ_UINT32_MAX) ? &comp_size : NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) + ? &local_dir_header_ofs + : NULL); + } + + if (!mz_zip_writer_create_local_dir_header( + pZip, local_dir_header, (mz_uint16) archive_name_size, + (mz_uint16) (extra_size + user_extra_data_len), + (max_size >= MZ_UINT32_MAX) ? MZ_UINT32_MAX : uncomp_size, + (max_size >= MZ_UINT32_MAX) ? MZ_UINT32_MAX : comp_size, + uncomp_crc32, method, gen_flags, dos_time, dos_date)) + return mz_zip_set_error(pZip, MZ_ZIP_INTERNAL_ERROR); + + cur_archive_header_file_ofs = local_dir_header_ofs; + + if (pZip->m_pWrite(pZip->m_pIO_opaque, + cur_archive_header_file_ofs, local_dir_header, + sizeof(local_dir_header)) != + sizeof(local_dir_header)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + if (pExtra_data != NULL) { + cur_archive_header_file_ofs += sizeof(local_dir_header); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, + cur_archive_header_file_ofs, pArchive_name, + archive_name_size) != archive_name_size) { + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_archive_header_file_ofs += archive_name_size; + + if (pZip->m_pWrite(pZip->m_pIO_opaque, + cur_archive_header_file_ofs, extra_data, + extra_size) != extra_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_archive_header_file_ofs += extra_size; + } + } + + if (pExtra_data != NULL) { + extra_size = mz_zip_writer_create_zip64_extra_data( + extra_data, + (uncomp_size >= MZ_UINT32_MAX) ? &uncomp_size : NULL, + (uncomp_size >= MZ_UINT32_MAX) ? &comp_size : NULL, + (local_dir_header_ofs >= MZ_UINT32_MAX) + ? &local_dir_header_ofs + : NULL); + } + + if (!mz_zip_writer_add_to_central_dir( + pZip, pArchive_name, (mz_uint16) archive_name_size, + pExtra_data, (mz_uint16) extra_size, pComment, comment_size, + uncomp_size, comp_size, uncomp_crc32, method, gen_flags, + dos_time, dos_date, local_dir_header_ofs, ext_attributes, + user_extra_data_central, user_extra_data_central_len)) + return MZ_FALSE; + + pZip->m_total_files++; + pZip->m_archive_size = cur_archive_file_ofs; + + return MZ_TRUE; +} + +# ifndef MINIZ_NO_STDIO + +static size_t mz_file_read_func_stdio(void *pOpaque, + mz_uint64 file_ofs, void *pBuf, + size_t n) { + MZ_FILE *pSrc_file = (MZ_FILE *) pOpaque; + mz_int64 cur_ofs = MZ_FTELL64(pSrc_file); + + if (((mz_int64) file_ofs < 0) || + (((cur_ofs != (mz_int64) file_ofs)) && + (MZ_FSEEK64(pSrc_file, (mz_int64) file_ofs, SEEK_SET)))) + return 0; + + return MZ_FREAD(pBuf, 1, n, pSrc_file); +} + +mz_bool mz_zip_writer_add_cfile( + mz_zip_archive *pZip, const char *pArchive_name, + MZ_FILE *pSrc_file, mz_uint64 max_size, + const MZ_TIME_T *pFile_time, const void *pComment, + mz_uint16 comment_size, mz_uint level_and_flags, + const char *user_extra_data, mz_uint user_extra_data_len, + const char *user_extra_data_central, + mz_uint user_extra_data_central_len) { + return mz_zip_writer_add_read_buf_callback( + pZip, pArchive_name, mz_file_read_func_stdio, pSrc_file, + max_size, pFile_time, pComment, comment_size, level_and_flags, + user_extra_data, user_extra_data_len, user_extra_data_central, + user_extra_data_central_len); +} + +mz_bool mz_zip_writer_add_file(mz_zip_archive *pZip, + const char *pArchive_name, + const char *pSrc_filename, + const void *pComment, + mz_uint16 comment_size, + mz_uint level_and_flags) { + MZ_FILE *pSrc_file = NULL; + mz_uint64 uncomp_size = 0; + MZ_TIME_T file_modified_time; + MZ_TIME_T *pFile_time = NULL; + mz_bool status; + + memset(&file_modified_time, 0, sizeof(file_modified_time)); + +# if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_STDIO) + pFile_time = &file_modified_time; + if (!mz_zip_get_file_modified_time(pSrc_filename, + &file_modified_time)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_STAT_FAILED); +# endif + + pSrc_file = MZ_FOPEN(pSrc_filename, "rb"); + if (!pSrc_file) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_OPEN_FAILED); + + MZ_FSEEK64(pSrc_file, 0, SEEK_END); + uncomp_size = MZ_FTELL64(pSrc_file); + MZ_FSEEK64(pSrc_file, 0, SEEK_SET); + + status = mz_zip_writer_add_cfile( + pZip, pArchive_name, pSrc_file, uncomp_size, pFile_time, + pComment, comment_size, level_and_flags, NULL, 0, NULL, 0); + + MZ_FCLOSE(pSrc_file); + + return status; +} +# endif /* #ifndef MINIZ_NO_STDIO */ + +static mz_bool mz_zip_writer_update_zip64_extension_block( + mz_zip_array *pNew_ext, mz_zip_archive *pZip, + const mz_uint8 *pExt, mz_uint32 ext_len, mz_uint64 *pComp_size, + mz_uint64 *pUncomp_size, mz_uint64 *pLocal_header_ofs, + mz_uint32 *pDisk_start) { + /* + 64 should be enough for any new zip64 data */ + if (!mz_zip_array_reserve(pZip, pNew_ext, ext_len + 64, MZ_FALSE)) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + mz_zip_array_resize(pZip, pNew_ext, 0, MZ_FALSE); + + if ((pUncomp_size) || (pComp_size) || (pLocal_header_ofs) || + (pDisk_start)) { + mz_uint8 new_ext_block[64]; + mz_uint8 *pDst = new_ext_block; + mz_write_le16(pDst, + MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID); + mz_write_le16(pDst + sizeof(mz_uint16), 0); + pDst += sizeof(mz_uint16) * 2; + + if (pUncomp_size) { + mz_write_le64(pDst, *pUncomp_size); + pDst += sizeof(mz_uint64); + } + + if (pComp_size) { + mz_write_le64(pDst, *pComp_size); + pDst += sizeof(mz_uint64); + } + + if (pLocal_header_ofs) { + mz_write_le64(pDst, *pLocal_header_ofs); + pDst += sizeof(mz_uint64); + } + + if (pDisk_start) { + mz_write_le32(pDst, *pDisk_start); + pDst += sizeof(mz_uint32); + } + + mz_write_le16( + new_ext_block + sizeof(mz_uint16), + (mz_uint16) ((pDst - new_ext_block) - sizeof(mz_uint16) * 2)); + + if (!mz_zip_array_push_back(pZip, pNew_ext, new_ext_block, + pDst - new_ext_block)) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if ((pExt) && (ext_len)) { + mz_uint32 extra_size_remaining = ext_len; + const mz_uint8 *pExtra_data = pExt; + + do { + mz_uint32 field_id, field_data_size, field_total_size; + + if (extra_size_remaining < (sizeof(mz_uint16) * 2)) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + field_id = MZ_READ_LE16(pExtra_data); + field_data_size = MZ_READ_LE16(pExtra_data + sizeof(mz_uint16)); + field_total_size = field_data_size + sizeof(mz_uint16) * 2; + + if (field_total_size > extra_size_remaining) + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + if (field_id != MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) { + if (!mz_zip_array_push_back(pZip, pNew_ext, pExtra_data, + field_total_size)) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + pExtra_data += field_total_size; + extra_size_remaining -= field_total_size; + } while (extra_size_remaining); + } + + return MZ_TRUE; +} + +/* TODO: This func is now pretty freakin complex due to zip64, split + * it up? */ +mz_bool mz_zip_writer_add_from_zip_reader(mz_zip_archive *pZip, + mz_zip_archive *pSource_zip, + mz_uint src_file_index) { + mz_uint n, bit_flags, num_alignment_padding_bytes, + src_central_dir_following_data_size; + mz_uint64 src_archive_bytes_remaining, local_dir_header_ofs; + mz_uint64 cur_src_file_ofs, cur_dst_file_ofs; + mz_uint32 local_header_u32[(MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + sizeof(mz_uint32) - 1) / + sizeof(mz_uint32)]; + mz_uint8 *pLocal_header = (mz_uint8 *) local_header_u32; + mz_uint8 new_central_header[MZ_ZIP_CENTRAL_DIR_HEADER_SIZE]; + size_t orig_central_dir_size; + mz_zip_internal_state *pState; + void *pBuf; + const mz_uint8 *pSrc_central_header; + mz_zip_archive_file_stat src_file_stat; + mz_uint32 src_filename_len, src_comment_len, src_ext_len; + mz_uint32 local_header_filename_size, local_header_extra_len; + mz_uint64 local_header_comp_size, local_header_uncomp_size; + mz_bool found_zip64_ext_data_in_ldir = MZ_FALSE; + + /* Sanity checks */ + if ((!pZip) || (!pZip->m_pState) || + (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING) || + (!pSource_zip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + + /* Don't support copying files from zip64 archives to non-zip64, + * even though in some cases this is possible */ + if ((pSource_zip->m_pState->m_zip64) && (!pZip->m_pState->m_zip64)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + /* Get pointer to the source central dir header and crack it */ + if (NULL == (pSrc_central_header = mz_zip_get_cdh(pSource_zip, + src_file_index))) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (MZ_READ_LE32(pSrc_central_header + MZ_ZIP_CDH_SIG_OFS) != + MZ_ZIP_CENTRAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + src_filename_len = MZ_READ_LE16(pSrc_central_header + + MZ_ZIP_CDH_FILENAME_LEN_OFS); + src_comment_len = MZ_READ_LE16(pSrc_central_header + + MZ_ZIP_CDH_COMMENT_LEN_OFS); + src_ext_len = MZ_READ_LE16(pSrc_central_header + + MZ_ZIP_CDH_EXTRA_LEN_OFS); + src_central_dir_following_data_size = src_filename_len + + src_ext_len + src_comment_len; + + /* TODO: We don't support central dir's >= MZ_UINT32_MAX bytes right + * now (+32 fudge factor in case we need to add more extra data) */ + if ((pState->m_central_dir.m_size + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + src_central_dir_following_data_size + 32) >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + + num_alignment_padding_bytes = + mz_zip_writer_compute_padding_needed_for_file_alignment(pZip); + + if (!pState->m_zip64) { + if (pZip->m_total_files == MZ_UINT16_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } else { + /* TODO: Our zip64 support still has some 32-bit limits that may + * not be worth fixing. */ + if (pZip->m_total_files == MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } + + if (!mz_zip_file_stat_internal(pSource_zip, src_file_index, + pSrc_central_header, &src_file_stat, + NULL)) + return MZ_FALSE; + + cur_src_file_ofs = src_file_stat.m_local_header_ofs; + cur_dst_file_ofs = pZip->m_archive_size; + + /* Read the source archive's local dir header */ + if (pSource_zip->m_pRead(pSource_zip->m_pIO_opaque, + cur_src_file_ofs, pLocal_header, + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + + if (MZ_READ_LE32(pLocal_header) != MZ_ZIP_LOCAL_DIR_HEADER_SIG) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + + cur_src_file_ofs += MZ_ZIP_LOCAL_DIR_HEADER_SIZE; + + /* Compute the total size we need to copy (filename+extra + * data+compressed data) */ + local_header_filename_size = MZ_READ_LE16( + pLocal_header + MZ_ZIP_LDH_FILENAME_LEN_OFS); + local_header_extra_len = MZ_READ_LE16(pLocal_header + + MZ_ZIP_LDH_EXTRA_LEN_OFS); + local_header_comp_size = MZ_READ_LE32( + pLocal_header + MZ_ZIP_LDH_COMPRESSED_SIZE_OFS); + local_header_uncomp_size = MZ_READ_LE32( + pLocal_header + MZ_ZIP_LDH_DECOMPRESSED_SIZE_OFS); + src_archive_bytes_remaining = src_file_stat.m_comp_size + + local_header_filename_size + + local_header_extra_len; + + /* Try to find a zip64 extended information field */ + if ((local_header_extra_len) && + ((local_header_comp_size == MZ_UINT32_MAX) || + (local_header_uncomp_size == MZ_UINT32_MAX))) { + mz_zip_array file_data_array; + const mz_uint8 *pExtra_data; + mz_uint32 extra_size_remaining = local_header_extra_len; + + mz_zip_array_init(&file_data_array, 1); + if (!mz_zip_array_resize(pZip, &file_data_array, + local_header_extra_len, MZ_FALSE)) { + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (pSource_zip->m_pRead(pSource_zip->m_pIO_opaque, + src_file_stat.m_local_header_ofs + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + + local_header_filename_size, + file_data_array.m_p, + local_header_extra_len) != + local_header_extra_len) { + mz_zip_array_clear(pZip, &file_data_array); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + + pExtra_data = (const mz_uint8 *) file_data_array.m_p; + + do { + mz_uint32 field_id, field_data_size, field_total_size; + + if (extra_size_remaining < (sizeof(mz_uint16) * 2)) { + mz_zip_array_clear(pZip, &file_data_array); + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + field_id = MZ_READ_LE16(pExtra_data); + field_data_size = MZ_READ_LE16(pExtra_data + sizeof(mz_uint16)); + field_total_size = field_data_size + sizeof(mz_uint16) * 2; + + if (field_total_size > extra_size_remaining) { + mz_zip_array_clear(pZip, &file_data_array); + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + if (field_id == MZ_ZIP64_EXTENDED_INFORMATION_FIELD_HEADER_ID) { + const mz_uint8 *pSrc_field_data = pExtra_data + + sizeof(mz_uint32); + + if (field_data_size < sizeof(mz_uint64) * 2) { + mz_zip_array_clear(pZip, &file_data_array); + return mz_zip_set_error(pZip, + MZ_ZIP_INVALID_HEADER_OR_CORRUPTED); + } + + local_header_uncomp_size = MZ_READ_LE64(pSrc_field_data); + local_header_comp_size = MZ_READ_LE64( + pSrc_field_data + + sizeof(mz_uint64)); /* may be 0 if there's a descriptor */ + + found_zip64_ext_data_in_ldir = MZ_TRUE; + break; + } + + pExtra_data += field_total_size; + extra_size_remaining -= field_total_size; + } while (extra_size_remaining); + + mz_zip_array_clear(pZip, &file_data_array); + } + + if (!pState->m_zip64) { + /* Try to detect if the new archive will most likely wind up too + * big and bail early (+(sizeof(mz_uint32) * 4) is for the + * optional descriptor which could be present, +64 is a fudge + * factor). */ + /* We also check when the archive is finalized so this doesn't + * need to be perfect. */ + mz_uint64 approx_new_archive_size = + cur_dst_file_ofs + num_alignment_padding_bytes + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + src_archive_bytes_remaining + + (sizeof(mz_uint32) * 4) + pState->m_central_dir.m_size + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + src_central_dir_following_data_size + + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE + 64; + + if (approx_new_archive_size >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + } + + /* Write dest archive padding */ + if (!mz_zip_writer_write_zeros(pZip, cur_dst_file_ofs, + num_alignment_padding_bytes)) + return MZ_FALSE; + + cur_dst_file_ofs += num_alignment_padding_bytes; + + local_dir_header_ofs = cur_dst_file_ofs; + if (pZip->m_file_offset_alignment) { + MZ_ASSERT((local_dir_header_ofs & + (pZip->m_file_offset_alignment - 1)) == 0); + } + + /* The original zip's local header+ext block doesn't change, even + * with zip64, so we can just copy it over to the dest zip */ + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_dst_file_ofs, + pLocal_header, MZ_ZIP_LOCAL_DIR_HEADER_SIZE) != + MZ_ZIP_LOCAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + cur_dst_file_ofs += MZ_ZIP_LOCAL_DIR_HEADER_SIZE; + + /* Copy over the source archive bytes to the dest archive, also + * ensure we have enough buf space to handle optional data + * descriptor */ + if (NULL == (pBuf = pZip->m_pAlloc( + pZip->m_pAlloc_opaque, 1, + (size_t) MZ_MAX( + 32U, MZ_MIN((mz_uint64) MZ_ZIP_MAX_IO_BUF_SIZE, + src_archive_bytes_remaining))))) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + while (src_archive_bytes_remaining) { + n = (mz_uint) MZ_MIN((mz_uint64) MZ_ZIP_MAX_IO_BUF_SIZE, + src_archive_bytes_remaining); + if (pSource_zip->m_pRead(pSource_zip->m_pIO_opaque, + cur_src_file_ofs, pBuf, n) != n) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + cur_src_file_ofs += n; + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_dst_file_ofs, pBuf, + n) != n) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + cur_dst_file_ofs += n; + + src_archive_bytes_remaining -= n; + } + + /* Now deal with the optional data descriptor */ + bit_flags = MZ_READ_LE16(pLocal_header + MZ_ZIP_LDH_BIT_FLAG_OFS); + if (bit_flags & 8) { + /* Copy data descriptor */ + if ((pSource_zip->m_pState->m_zip64) || + (found_zip64_ext_data_in_ldir)) { + /* src is zip64, dest must be zip64 */ + + /* name uint32_t's */ + /* id 1 (optional in zip64?) */ + /* crc 1 */ + /* comp_size 2 */ + /* uncomp_size 2 */ + if (pSource_zip->m_pRead( + pSource_zip->m_pIO_opaque, cur_src_file_ofs, pBuf, + (sizeof(mz_uint32) * 6)) != (sizeof(mz_uint32) * 6)) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + + n = sizeof(mz_uint32) * + ((MZ_READ_LE32(pBuf) == MZ_ZIP_DATA_DESCRIPTOR_ID) ? 6 : 5); + } else { + /* src is NOT zip64 */ + mz_bool has_id; + + if (pSource_zip->m_pRead( + pSource_zip->m_pIO_opaque, cur_src_file_ofs, pBuf, + sizeof(mz_uint32) * 4) != sizeof(mz_uint32) * 4) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED); + } + + has_id = (MZ_READ_LE32(pBuf) == MZ_ZIP_DATA_DESCRIPTOR_ID); + + if (pZip->m_pState->m_zip64) { + /* dest is zip64, so upgrade the data descriptor */ + const mz_uint8 *pSrc_descriptor = (const mz_uint8 *) pBuf + + (has_id ? sizeof(mz_uint32) + : 0); + const mz_uint32 src_crc32 = MZ_READ_LE32(pSrc_descriptor); + const mz_uint64 src_comp_size = MZ_READ_LE32( + pSrc_descriptor + sizeof(mz_uint32)); + const mz_uint64 src_uncomp_size = MZ_READ_LE32( + pSrc_descriptor + 2 * sizeof(mz_uint32)); + + mz_write_le32((mz_uint8 *) pBuf, MZ_ZIP_DATA_DESCRIPTOR_ID); + mz_write_le32((mz_uint8 *) pBuf + sizeof(mz_uint32) * 1, + src_crc32); + mz_write_le64((mz_uint8 *) pBuf + sizeof(mz_uint32) * 2, + src_comp_size); + mz_write_le64((mz_uint8 *) pBuf + sizeof(mz_uint32) * 4, + src_uncomp_size); + + n = sizeof(mz_uint32) * 6; + } else { + /* dest is NOT zip64, just copy it as-is */ + n = sizeof(mz_uint32) * (has_id ? 4 : 3); + } + } + + if (pZip->m_pWrite(pZip->m_pIO_opaque, cur_dst_file_ofs, pBuf, + n) != n) { + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + } + + cur_src_file_ofs += n; + cur_dst_file_ofs += n; + } + pZip->m_pFree(pZip->m_pAlloc_opaque, pBuf); + + /* Finally, add the new central dir header */ + orig_central_dir_size = pState->m_central_dir.m_size; + + memcpy(new_central_header, pSrc_central_header, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE); + + if (pState->m_zip64) { + /* This is the painful part: We need to write a new central dir + * header + ext block with updated zip64 fields, and ensure the + * old fields (if any) are not included. */ + const mz_uint8 *pSrc_ext = pSrc_central_header + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + src_filename_len; + mz_zip_array new_ext_block; + + mz_zip_array_init(&new_ext_block, sizeof(mz_uint8)); + + MZ_WRITE_LE32(new_central_header + MZ_ZIP_CDH_COMPRESSED_SIZE_OFS, + MZ_UINT32_MAX); + MZ_WRITE_LE32(new_central_header + + MZ_ZIP_CDH_DECOMPRESSED_SIZE_OFS, + MZ_UINT32_MAX); + MZ_WRITE_LE32(new_central_header + MZ_ZIP_CDH_LOCAL_HEADER_OFS, + MZ_UINT32_MAX); + + if (!mz_zip_writer_update_zip64_extension_block( + &new_ext_block, pZip, pSrc_ext, src_ext_len, + &src_file_stat.m_comp_size, &src_file_stat.m_uncomp_size, + &local_dir_header_ofs, NULL)) { + mz_zip_array_clear(pZip, &new_ext_block); + return MZ_FALSE; + } + + MZ_WRITE_LE16(new_central_header + MZ_ZIP_CDH_EXTRA_LEN_OFS, + new_ext_block.m_size); + + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + new_central_header, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE)) { + mz_zip_array_clear(pZip, &new_ext_block); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + pSrc_central_header + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE, + src_filename_len)) { + mz_zip_array_clear(pZip, &new_ext_block); + mz_zip_array_resize(pZip, &pState->m_central_dir, + orig_central_dir_size, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + new_ext_block.m_p, + new_ext_block.m_size)) { + mz_zip_array_clear(pZip, &new_ext_block); + mz_zip_array_resize(pZip, &pState->m_central_dir, + orig_central_dir_size, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + pSrc_central_header + + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + src_filename_len + src_ext_len, + src_comment_len)) { + mz_zip_array_clear(pZip, &new_ext_block); + mz_zip_array_resize(pZip, &pState->m_central_dir, + orig_central_dir_size, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + mz_zip_array_clear(pZip, &new_ext_block); + } else { + /* sanity checks */ + if (cur_dst_file_ofs > MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + + if (local_dir_header_ofs >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_ARCHIVE_TOO_LARGE); + + MZ_WRITE_LE32(new_central_header + MZ_ZIP_CDH_LOCAL_HEADER_OFS, + local_dir_header_ofs); + + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir, + new_central_header, + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE)) + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + + if (!mz_zip_array_push_back( + pZip, &pState->m_central_dir, + pSrc_central_header + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE, + src_central_dir_following_data_size)) { + mz_zip_array_resize(pZip, &pState->m_central_dir, + orig_central_dir_size, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + } + + /* This shouldn't trigger unless we screwed up during the initial + * sanity checks */ + if (pState->m_central_dir.m_size >= MZ_UINT32_MAX) { + /* TODO: Support central dirs >= 32-bits in size */ + mz_zip_array_resize(pZip, &pState->m_central_dir, + orig_central_dir_size, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_UNSUPPORTED_CDIR_SIZE); + } + + n = (mz_uint32) orig_central_dir_size; + if (!mz_zip_array_push_back(pZip, &pState->m_central_dir_offsets, + &n, 1)) { + mz_zip_array_resize(pZip, &pState->m_central_dir, + orig_central_dir_size, MZ_FALSE); + return mz_zip_set_error(pZip, MZ_ZIP_ALLOC_FAILED); + } + + pZip->m_total_files++; + pZip->m_archive_size = cur_dst_file_ofs; + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_finalize_archive(mz_zip_archive *pZip) { + mz_zip_internal_state *pState; + mz_uint64 central_dir_ofs, central_dir_size; + mz_uint8 hdr[256]; + + if ((!pZip) || (!pZip->m_pState) || + (pZip->m_zip_mode != MZ_ZIP_MODE_WRITING)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + pState = pZip->m_pState; + + if (pState->m_zip64) { + if ((mz_uint64) pState->m_central_dir.m_size >= MZ_UINT32_MAX) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } else { + if ((pZip->m_total_files > MZ_UINT16_MAX) || + ((pZip->m_archive_size + pState->m_central_dir.m_size + + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) > MZ_UINT32_MAX)) + return mz_zip_set_error(pZip, MZ_ZIP_TOO_MANY_FILES); + } + + central_dir_ofs = 0; + central_dir_size = 0; + if (pZip->m_total_files) { + /* Write central directory */ + central_dir_ofs = pZip->m_archive_size; + central_dir_size = pState->m_central_dir.m_size; + pZip->m_central_directory_file_ofs = central_dir_ofs; + if (pZip->m_pWrite(pZip->m_pIO_opaque, central_dir_ofs, + pState->m_central_dir.m_p, + (size_t) central_dir_size) != central_dir_size) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + pZip->m_archive_size += central_dir_size; + } + + if (pState->m_zip64) { + /* Write zip64 end of central directory header */ + mz_uint64 rel_ofs_to_zip64_ecdr = pZip->m_archive_size; + + MZ_CLEAR_ARR(hdr); + MZ_WRITE_LE32(hdr + MZ_ZIP64_ECDH_SIG_OFS, + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIG); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_SIZE_OF_RECORD_OFS, + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE - + sizeof(mz_uint32) - sizeof(mz_uint64)); + MZ_WRITE_LE16(hdr + MZ_ZIP64_ECDH_VERSION_MADE_BY_OFS, + 0x031E); /* TODO: always Unix */ + MZ_WRITE_LE16(hdr + MZ_ZIP64_ECDH_VERSION_NEEDED_OFS, 0x002D); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS, + pZip->m_total_files); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_CDIR_TOTAL_ENTRIES_OFS, + pZip->m_total_files); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_CDIR_SIZE_OFS, + central_dir_size); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDH_CDIR_OFS_OFS, central_dir_ofs); + if (pZip->m_pWrite(pZip->m_pIO_opaque, pZip->m_archive_size, hdr, + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE) != + MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + pZip->m_archive_size += MZ_ZIP64_END_OF_CENTRAL_DIR_HEADER_SIZE; + + /* Write zip64 end of central directory locator */ + MZ_CLEAR_ARR(hdr); + MZ_WRITE_LE32(hdr + MZ_ZIP64_ECDL_SIG_OFS, + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIG); + MZ_WRITE_LE64(hdr + MZ_ZIP64_ECDL_REL_OFS_TO_ZIP64_ECDR_OFS, + rel_ofs_to_zip64_ecdr); + MZ_WRITE_LE32(hdr + MZ_ZIP64_ECDL_TOTAL_NUMBER_OF_DISKS_OFS, 1); + if (pZip->m_pWrite(pZip->m_pIO_opaque, pZip->m_archive_size, hdr, + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE) != + MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + + pZip->m_archive_size += MZ_ZIP64_END_OF_CENTRAL_DIR_LOCATOR_SIZE; + } + + /* Write end of central directory record */ + MZ_CLEAR_ARR(hdr); + MZ_WRITE_LE32(hdr + MZ_ZIP_ECDH_SIG_OFS, + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIG); + MZ_WRITE_LE16(hdr + MZ_ZIP_ECDH_CDIR_NUM_ENTRIES_ON_DISK_OFS, + MZ_MIN(MZ_UINT16_MAX, pZip->m_total_files)); + MZ_WRITE_LE16(hdr + MZ_ZIP_ECDH_CDIR_TOTAL_ENTRIES_OFS, + MZ_MIN(MZ_UINT16_MAX, pZip->m_total_files)); + MZ_WRITE_LE32(hdr + MZ_ZIP_ECDH_CDIR_SIZE_OFS, + MZ_MIN(MZ_UINT32_MAX, central_dir_size)); + MZ_WRITE_LE32(hdr + MZ_ZIP_ECDH_CDIR_OFS_OFS, + MZ_MIN(MZ_UINT32_MAX, central_dir_ofs)); + + if (pZip->m_pWrite(pZip->m_pIO_opaque, pZip->m_archive_size, hdr, + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) != + MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_WRITE_FAILED); + +# ifndef MINIZ_NO_STDIO + if ((pState->m_pFile) && (MZ_FFLUSH(pState->m_pFile) == EOF)) + return mz_zip_set_error(pZip, MZ_ZIP_FILE_CLOSE_FAILED); +# endif /* #ifndef MINIZ_NO_STDIO */ + + pZip->m_archive_size += MZ_ZIP_END_OF_CENTRAL_DIR_HEADER_SIZE; + + pZip->m_zip_mode = MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED; + return MZ_TRUE; +} + +mz_bool mz_zip_writer_finalize_heap_archive(mz_zip_archive *pZip, + void **ppBuf, + size_t *pSize) { + if ((!ppBuf) || (!pSize)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + *ppBuf = NULL; + *pSize = 0; + + if ((!pZip) || (!pZip->m_pState)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (pZip->m_pWrite != mz_zip_heap_write_func) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + if (!mz_zip_writer_finalize_archive(pZip)) + return MZ_FALSE; + + *ppBuf = pZip->m_pState->m_pMem; + *pSize = pZip->m_pState->m_mem_size; + pZip->m_pState->m_pMem = NULL; + pZip->m_pState->m_mem_size = pZip->m_pState->m_mem_capacity = 0; + + return MZ_TRUE; +} + +mz_bool mz_zip_writer_end(mz_zip_archive *pZip) { + return mz_zip_writer_end_internal(pZip, MZ_TRUE); +} + +# ifndef MINIZ_NO_STDIO +mz_bool mz_zip_add_mem_to_archive_file_in_place( + const char *pZip_filename, const char *pArchive_name, + const void *pBuf, size_t buf_size, const void *pComment, + mz_uint16 comment_size, mz_uint level_and_flags) { + return mz_zip_add_mem_to_archive_file_in_place_v2( + pZip_filename, pArchive_name, pBuf, buf_size, pComment, + comment_size, level_and_flags, NULL); +} + +mz_bool mz_zip_add_mem_to_archive_file_in_place_v2( + const char *pZip_filename, const char *pArchive_name, + const void *pBuf, size_t buf_size, const void *pComment, + mz_uint16 comment_size, mz_uint level_and_flags, + mz_zip_error *pErr) { + mz_bool status, created_new_archive = MZ_FALSE; + mz_zip_archive zip_archive; + struct MZ_FILE_STAT_STRUCT file_stat; + mz_zip_error actual_err = MZ_ZIP_NO_ERROR; + + mz_zip_zero_struct(&zip_archive); + if ((int) level_and_flags < 0) + level_and_flags = MZ_DEFAULT_LEVEL; + + if ((!pZip_filename) || (!pArchive_name) || + ((buf_size) && (!pBuf)) || ((comment_size) && (!pComment)) || + ((level_and_flags & 0xF) > MZ_UBER_COMPRESSION)) { + if (pErr) + *pErr = MZ_ZIP_INVALID_PARAMETER; + return MZ_FALSE; + } + + if (!mz_zip_writer_validate_archive_name(pArchive_name)) { + if (pErr) + *pErr = MZ_ZIP_INVALID_FILENAME; + return MZ_FALSE; + } + + /* Important: The regular non-64 bit version of stat() can fail here + * if the file is very large, which could cause the archive to be + * overwritten. */ + /* So be sure to compile with _LARGEFILE64_SOURCE 1 */ + if (MZ_FILE_STAT(pZip_filename, &file_stat) != 0) { + /* Create a new archive. */ + if (!mz_zip_writer_init_file_v2(&zip_archive, pZip_filename, 0, + level_and_flags)) { + if (pErr) + *pErr = zip_archive.m_last_error; + return MZ_FALSE; + } + + created_new_archive = MZ_TRUE; + } else { + /* Append to an existing archive. */ + if (!mz_zip_reader_init_file_v2( + &zip_archive, pZip_filename, + level_and_flags | + MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY, + 0, 0)) { + if (pErr) + *pErr = zip_archive.m_last_error; + return MZ_FALSE; + } + + if (!mz_zip_writer_init_from_reader_v2( + &zip_archive, pZip_filename, level_and_flags)) { + if (pErr) + *pErr = zip_archive.m_last_error; + + mz_zip_reader_end_internal(&zip_archive, MZ_FALSE); + + return MZ_FALSE; + } + } + + status = mz_zip_writer_add_mem_ex(&zip_archive, pArchive_name, pBuf, + buf_size, pComment, comment_size, + level_and_flags, 0, 0); + actual_err = zip_archive.m_last_error; + + /* Always finalize, even if adding failed for some reason, so we + * have a valid central directory. (This may not always succeed, but + * we can try.) */ + if (!mz_zip_writer_finalize_archive(&zip_archive)) { + if (!actual_err) + actual_err = zip_archive.m_last_error; + + status = MZ_FALSE; + } + + if (!mz_zip_writer_end_internal(&zip_archive, status)) { + if (!actual_err) + actual_err = zip_archive.m_last_error; + + status = MZ_FALSE; + } + + if ((!status) && (created_new_archive)) { + /* It's a new archive and something went wrong, so just delete it. + */ + int ignoredStatus = MZ_DELETE_FILE(pZip_filename); + (void) ignoredStatus; + } + + if (pErr) + *pErr = actual_err; + + return status; +} + +void *mz_zip_extract_archive_file_to_heap_v2( + const char *pZip_filename, const char *pArchive_name, + const char *pComment, size_t *pSize, mz_uint flags, + mz_zip_error *pErr) { + mz_uint32 file_index; + mz_zip_archive zip_archive; + void *p = NULL; + + if (pSize) + *pSize = 0; + + if ((!pZip_filename) || (!pArchive_name)) { + if (pErr) + *pErr = MZ_ZIP_INVALID_PARAMETER; + + return NULL; + } + + mz_zip_zero_struct(&zip_archive); + if (!mz_zip_reader_init_file_v2( + &zip_archive, pZip_filename, + flags | MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY, 0, 0)) { + if (pErr) + *pErr = zip_archive.m_last_error; + + return NULL; + } + + if (mz_zip_reader_locate_file_v2(&zip_archive, pArchive_name, + pComment, flags, &file_index)) { + p = mz_zip_reader_extract_to_heap(&zip_archive, file_index, pSize, + flags); + } + + mz_zip_reader_end_internal(&zip_archive, p != NULL); + + if (pErr) + *pErr = zip_archive.m_last_error; + + return p; +} + +void *mz_zip_extract_archive_file_to_heap(const char *pZip_filename, + const char *pArchive_name, + size_t *pSize, + mz_uint flags) { + return mz_zip_extract_archive_file_to_heap_v2( + pZip_filename, pArchive_name, NULL, pSize, flags, NULL); +} + +# endif /* #ifndef MINIZ_NO_STDIO */ + +# endif /* #ifndef MINIZ_NO_ARCHIVE_WRITING_APIS */ + +/* ------------------- Misc utils */ + +mz_zip_mode mz_zip_get_mode(mz_zip_archive *pZip) { + return pZip ? pZip->m_zip_mode : MZ_ZIP_MODE_INVALID; +} + +mz_zip_type mz_zip_get_type(mz_zip_archive *pZip) { + return pZip ? pZip->m_zip_type : MZ_ZIP_TYPE_INVALID; +} + +mz_zip_error mz_zip_set_last_error(mz_zip_archive *pZip, + mz_zip_error err_num) { + mz_zip_error prev_err; + + if (!pZip) + return MZ_ZIP_INVALID_PARAMETER; + + prev_err = pZip->m_last_error; + + pZip->m_last_error = err_num; + return prev_err; +} + +mz_zip_error mz_zip_peek_last_error(mz_zip_archive *pZip) { + if (!pZip) + return MZ_ZIP_INVALID_PARAMETER; + + return pZip->m_last_error; +} + +mz_zip_error mz_zip_clear_last_error(mz_zip_archive *pZip) { + return mz_zip_set_last_error(pZip, MZ_ZIP_NO_ERROR); +} + +mz_zip_error mz_zip_get_last_error(mz_zip_archive *pZip) { + mz_zip_error prev_err; + + if (!pZip) + return MZ_ZIP_INVALID_PARAMETER; + + prev_err = pZip->m_last_error; + + pZip->m_last_error = MZ_ZIP_NO_ERROR; + return prev_err; +} + +const char *mz_zip_get_error_string(mz_zip_error mz_err) { + switch (mz_err) { + case MZ_ZIP_NO_ERROR: return "no error"; + case MZ_ZIP_UNDEFINED_ERROR: return "undefined error"; + case MZ_ZIP_TOO_MANY_FILES: return "too many files"; + case MZ_ZIP_FILE_TOO_LARGE: return "file too large"; + case MZ_ZIP_UNSUPPORTED_METHOD: return "unsupported method"; + case MZ_ZIP_UNSUPPORTED_ENCRYPTION: + return "unsupported encryption"; + case MZ_ZIP_UNSUPPORTED_FEATURE: return "unsupported feature"; + case MZ_ZIP_FAILED_FINDING_CENTRAL_DIR: + return "failed finding central directory"; + case MZ_ZIP_NOT_AN_ARCHIVE: return "not a ZIP archive"; + case MZ_ZIP_INVALID_HEADER_OR_CORRUPTED: + return "invalid header or archive is corrupted"; + case MZ_ZIP_UNSUPPORTED_MULTIDISK: + return "unsupported multidisk archive"; + case MZ_ZIP_DECOMPRESSION_FAILED: + return "decompression failed or archive is corrupted"; + case MZ_ZIP_COMPRESSION_FAILED: return "compression failed"; + case MZ_ZIP_UNEXPECTED_DECOMPRESSED_SIZE: + return "unexpected decompressed size"; + case MZ_ZIP_CRC_CHECK_FAILED: return "CRC-32 check failed"; + case MZ_ZIP_UNSUPPORTED_CDIR_SIZE: + return "unsupported central directory size"; + case MZ_ZIP_ALLOC_FAILED: return "allocation failed"; + case MZ_ZIP_FILE_OPEN_FAILED: return "file open failed"; + case MZ_ZIP_FILE_CREATE_FAILED: return "file create failed"; + case MZ_ZIP_FILE_WRITE_FAILED: return "file write failed"; + case MZ_ZIP_FILE_READ_FAILED: return "file read failed"; + case MZ_ZIP_FILE_CLOSE_FAILED: return "file close failed"; + case MZ_ZIP_FILE_SEEK_FAILED: return "file seek failed"; + case MZ_ZIP_FILE_STAT_FAILED: return "file stat failed"; + case MZ_ZIP_INVALID_PARAMETER: return "invalid parameter"; + case MZ_ZIP_INVALID_FILENAME: return "invalid filename"; + case MZ_ZIP_BUF_TOO_SMALL: return "buffer too small"; + case MZ_ZIP_INTERNAL_ERROR: return "internal error"; + case MZ_ZIP_FILE_NOT_FOUND: return "file not found"; + case MZ_ZIP_ARCHIVE_TOO_LARGE: return "archive is too large"; + case MZ_ZIP_VALIDATION_FAILED: return "validation failed"; + case MZ_ZIP_WRITE_CALLBACK_FAILED: return "write callback failed"; + case MZ_ZIP_TOTAL_ERRORS: return "total errors"; + default: break; + } + + return "unknown error"; +} + +/* Note: Just because the archive is not zip64 doesn't necessarily + * mean it doesn't have Zip64 extended information extra field, argh. + */ +mz_bool mz_zip_is_zip64(mz_zip_archive *pZip) { + if ((!pZip) || (!pZip->m_pState)) + return MZ_FALSE; + + return pZip->m_pState->m_zip64; +} + +size_t mz_zip_get_central_dir_size(mz_zip_archive *pZip) { + if ((!pZip) || (!pZip->m_pState)) + return 0; + + return pZip->m_pState->m_central_dir.m_size; +} + +mz_uint mz_zip_reader_get_num_files(mz_zip_archive *pZip) { + return pZip ? pZip->m_total_files : 0; +} + +mz_uint64 mz_zip_get_archive_size(mz_zip_archive *pZip) { + if (!pZip) + return 0; + return pZip->m_archive_size; +} + +mz_uint64 mz_zip_get_archive_file_start_offset(mz_zip_archive *pZip) { + if ((!pZip) || (!pZip->m_pState)) + return 0; + return pZip->m_pState->m_file_archive_start_ofs; +} + +MZ_FILE *mz_zip_get_cfile(mz_zip_archive *pZip) { + if ((!pZip) || (!pZip->m_pState)) + return 0; + return pZip->m_pState->m_pFile; +} + +size_t mz_zip_read_archive_data(mz_zip_archive *pZip, + mz_uint64 file_ofs, void *pBuf, + size_t n) { + if ((!pZip) || (!pZip->m_pState) || (!pBuf) || (!pZip->m_pRead)) + return mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + + return pZip->m_pRead(pZip->m_pIO_opaque, file_ofs, pBuf, n); +} + +mz_uint mz_zip_reader_get_filename(mz_zip_archive *pZip, + mz_uint file_index, + char *pFilename, + mz_uint filename_buf_size) { + mz_uint n; + const mz_uint8 *p = mz_zip_get_cdh(pZip, file_index); + if (!p) { + if (filename_buf_size) + pFilename[0] = '\0'; + mz_zip_set_error(pZip, MZ_ZIP_INVALID_PARAMETER); + return 0; + } + n = MZ_READ_LE16(p + MZ_ZIP_CDH_FILENAME_LEN_OFS); + if (filename_buf_size) { + n = MZ_MIN(n, filename_buf_size - 1); + memcpy(pFilename, p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE, n); + pFilename[n] = '\0'; + } + return n + 1; +} + +mz_bool mz_zip_reader_file_stat(mz_zip_archive *pZip, + mz_uint file_index, + mz_zip_archive_file_stat *pStat) { + return mz_zip_file_stat_internal(pZip, file_index, + mz_zip_get_cdh(pZip, file_index), + pStat, NULL); +} + +mz_bool mz_zip_end(mz_zip_archive *pZip) { + if (!pZip) + return MZ_FALSE; + + if (pZip->m_zip_mode == MZ_ZIP_MODE_READING) + return mz_zip_reader_end(pZip); +# ifndef MINIZ_NO_ARCHIVE_WRITING_APIS + else if ((pZip->m_zip_mode == MZ_ZIP_MODE_WRITING) || + (pZip->m_zip_mode == + MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED)) + return mz_zip_writer_end(pZip); +# endif + + return MZ_FALSE; +} + +# ifdef __cplusplus +} +# endif + +#endif /*#ifndef MINIZ_NO_ARCHIVE_APIS*/ |