Fix type issue

Add !defined check on MINIZ_USE_ALIGNED_LOADS_AND_STORES

CMakeLists.txt

@@ -13,6 +13,7 @@ set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/bin)
 set(miniz_SOURCE miniz.c miniz_zip.c miniz_tinfl.c miniz_tdef.c)
 
 add_library(miniz ${miniz_SOURCE})
+target_include_directories(miniz PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}")
 
 set(EXAMPLE1_SRC_LIST "${CMAKE_CURRENT_SOURCE_DIR}/examples/example1.c")
 set(EXAMPLE2_SRC_LIST "${CMAKE_CURRENT_SOURCE_DIR}/examples/example2.c")
@@ -24,7 +25,6 @@ set(MINIZ_TESTER_SRC_LIST
     "${CMAKE_CURRENT_SOURCE_DIR}/tests/miniz_tester.cpp"
     "${CMAKE_CURRENT_SOURCE_DIR}/tests/timer.cpp")
 
-include_directories(${CMAKE_CURRENT_SOURCE_DIR})
 add_executable(example1 ${EXAMPLE1_SRC_LIST})
 target_link_libraries(example1 miniz)
 add_executable(example2 ${EXAMPLE2_SRC_LIST})

ChangeLog.md

@@ -1,5 +1,50 @@
 ## Changelog
 
+### 2.1.0
+
+ - More instances of memcpy instead of cast and use memcpy per default
+ - Remove inline for c90 support
+ - New function to read files via callback functions when adding them
+ - Fix out of bounds read while reading Zip64 extended information
+ - guard memcpy when n == 0 because buffer may be NULL
+ - Implement inflateReset() function
+ - Move comp/decomp alloc/free  prototypes under guarding #ifndef MZ_NO_MALLOC
+ - Fix large file support under Windows
+ - Don't warn if _LARGEFILE64_SOURCE is not defined to 1
+ - Fixes for MSVC warnings
+ - Remove check that path of file added to archive contains ':' or '\'
+ - Add !defined check on MINIZ_USE_ALIGNED_LOADS_AND_STORES
+
+### 2.0.8
+
+ - Remove unimplemented functions (mz_zip_locate_file and mz_zip_locate_file_v2)
+ - Add license, changelog, readme and example files to release zip
+ - Fix heap overflow to user buffer in tinfl_status tinfl_decompress
+ - Fix corrupt archive if uncompressed file smaller than 4 byte and the file is added by mz_zip_writer_add_mem*
+
+### 2.0.7
+
+ - Removed need in C++ compiler in cmake build
+ - Fixed a lot of uninitialized value errors found with Valgrind by memsetting m_dict to 0 in tdefl_init
+ - Fix resource leak in mz_zip_reader_init_file_v2
+ - Fix assert with mz_zip_writer_add_mem* w/MZ_DEFAULT_COMPRESSION
+ - cmake build: install library and headers
+ - Remove _LARGEFILE64_SOURCE requirement from apple defines for large files
+
+### 2.0.6
+
+ - Improve MZ_ZIP_FLAG_WRITE_ZIP64 documentation
+ - Remove check for cur_archive_file_ofs > UINT_MAX because cur_archive_file_ofs is not used after this point
+ - Add cmake debug configuration
+ - Fix PNG height when creating png files
+ - Add "iterative" file extraction method based on mz_zip_reader_extract_to_callback.
+ - Option to use memcpy for unaligned data access
+ - Define processor/arch macros as zero if not set to one
+
+### 2.0.4/2.0.5
+
+ - Fix compilation with the various omission compile definitions
+
 ### 2.0.3
 
 - Fix GCC/clang compile warnings
@@ -19,11 +64,12 @@
 
 ### 2.0.0 beta
 
-- Matthew Sitton merged to vogl ZIP64 changes. Miniz is now licensed as MIT since the vogl code base is MIT licensed
+- Matthew Sitton merged miniz 1.x to Rich Geldreich's vogl ZIP64 changes. Miniz is now licensed as MIT since the vogl code base is MIT licensed
 - Miniz is now split into several files
 - Miniz does now not seek backwards when creating ZIP files. That is the ZIP files can be streamed
-- Miniz automatically switches to the ZIP64 format the created ZIP files goes over ZIP file limits
+- Miniz automatically switches to the ZIP64 format when the created ZIP files goes over ZIP file limits
 - Similar to [SQLite](https://www.sqlite.org/amalgamation.html) the Miniz source code is amalgamated into one miniz.c/miniz.h pair in a build step (amalgamate.sh). Please use miniz.c/miniz.h in your projects
+- Miniz 2 is only source back-compatible with miniz 1.x. It breaks binary compatibility because structures changed
 
 ### v1.16 BETA Oct 19, 2013
 

amalgamate.sh

@@ -41,9 +41,27 @@ done
 rm test.out
 rm main.c
 
+cp ChangeLog.md amalgamation/
+cp LICENSE amalgamation/
+cp readme.md amalgamation/
+mkdir -p amalgamation/examples
+cp examples/* amalgamation/examples/
+
 cd amalgamation
 ! test -e miniz.zip || rm miniz.zip
-echo -e "miniz.c\nminiz.h" | zip -@ miniz
+cat << EOF | zip -@ miniz
+miniz.c
+miniz.h
+ChangeLog.md
+LICENSE
+readme.md
+examples/example1.c
+examples/example2.c
+examples/example3.c
+examples/example4.c
+examples/example5.c
+examples/example6.c
+EOF
 cd ..
 
 echo "Amalgamation created."

miniz.c

@@ -397,6 +397,32 @@ int mz_inflateInit(mz_streamp pStream)
     return mz_inflateInit2(pStream, MZ_DEFAULT_WINDOW_BITS);
 }
 
+int mz_inflateReset(mz_streamp pStream)
+{
+    inflate_state *pDecomp;
+    if (!pStream)
+        return MZ_STREAM_ERROR;
+
+    pStream->data_type = 0;
+    pStream->adler = 0;
+    pStream->msg = NULL;
+    pStream->total_in = 0;
+    pStream->total_out = 0;
+    pStream->reserved = 0;
+
+    pDecomp = (inflate_state *)pStream->state;
+
+    tinfl_init(&pDecomp->m_decomp);
+    pDecomp->m_dict_ofs = 0;
+    pDecomp->m_dict_avail = 0;
+    pDecomp->m_last_status = TINFL_STATUS_NEEDS_MORE_INPUT;
+    pDecomp->m_first_call = 1;
+    pDecomp->m_has_flushed = 0;
+    /* pDecomp->m_window_bits = window_bits */;
+
+    return MZ_OK;
+}
+
 int mz_inflate(mz_streamp pStream, int flush)
 {
     inflate_state *pState;

miniz.h

@@ -1,4 +1,4 @@
-/* miniz.c 2.0.7 - public domain deflate/inflate, zlib-subset, ZIP reading/writing/appending, PNG writing
+/* miniz.c 2.1.0 - public domain deflate/inflate, zlib-subset, ZIP reading/writing/appending, PNG writing
    See "unlicense" statement at the end of this file.
    Rich Geldreich <richgel99@gmail.com>, last updated Oct. 13, 2013
    Implements RFC 1950: http://www.ietf.org/rfc/rfc1950.txt and RFC 1951: http://www.ietf.org/rfc/rfc1951.txt
@@ -24,7 +24,7 @@
      zlib replacement in many apps:
         The z_stream struct, optional memory allocation callbacks
         deflateInit/deflateInit2/deflate/deflateReset/deflateEnd/deflateBound
-        inflateInit/inflateInit2/inflate/inflateEnd
+        inflateInit/inflateInit2/inflate/inflateReset/inflateEnd
         compress, compress2, compressBound, uncompress
         CRC-32, Adler-32 - Using modern, minimal code size, CPU cache friendly routines.
         Supports raw deflate streams or standard zlib streams with adler-32 checking.
@@ -170,12 +170,16 @@
 #define MINIZ_LITTLE_ENDIAN 0
 #endif
 
+/* Set MINIZ_USE_UNALIGNED_LOADS_AND_STORES only if not set */
+#if !defined(MINIZ_USE_UNALIGNED_LOADS_AND_STORES)
 #if MINIZ_X86_OR_X64_CPU
 /* Set MINIZ_USE_UNALIGNED_LOADS_AND_STORES to 1 on CPU's that permit efficient integer loads and stores from unaligned addresses. */
 #define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 1
+#define MINIZ_UNALIGNED_USE_MEMCPY
 #else
 #define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 0
 #endif
+#endif
 
 #if defined(_M_X64) || defined(_WIN64) || defined(__MINGW64__) || defined(_LP64) || defined(__LP64__) || defined(__ia64__) || defined(__x86_64__)
 /* Set MINIZ_HAS_64BIT_REGISTERS to 1 if operations on 64-bit integers are reasonably fast (and don't involve compiler generated calls to helper functions). */
@@ -234,11 +238,11 @@ enum
     MZ_DEFAULT_COMPRESSION = -1
 };
 
-#define MZ_VERSION "10.0.2"
-#define MZ_VERNUM 0xA020
+#define MZ_VERSION "10.1.0"
+#define MZ_VERNUM 0xA100
 #define MZ_VER_MAJOR 10
-#define MZ_VER_MINOR 0
-#define MZ_VER_REVISION 2
+#define MZ_VER_MINOR 1
+#define MZ_VER_REVISION 0
 #define MZ_VER_SUBREVISION 0
 
 #ifndef MINIZ_NO_ZLIB_APIS
@@ -361,6 +365,9 @@ int mz_inflateInit(mz_streamp pStream);
 /* window_bits must be MZ_DEFAULT_WINDOW_BITS (to parse zlib header/footer) or -MZ_DEFAULT_WINDOW_BITS (raw deflate). */
 int mz_inflateInit2(mz_streamp pStream, int window_bits);
 
+/* Quickly resets a compressor without having to reallocate anything. Same as calling mz_inflateEnd() followed by mz_inflateInit()/mz_inflateInit2(). */
+int mz_inflateReset(mz_streamp pStream);
+
 /* Decompresses the input stream to the output, consuming only as much of the input as needed, and writing as much to the output as possible. */
 /* Parameters: */
 /*   pStream is the stream to read from and write to. You must initialize/update the next_in, avail_in, next_out, and avail_out members. */
@@ -444,6 +451,7 @@ typedef void *const voidpc;
 #define compressBound mz_compressBound
 #define inflateInit mz_inflateInit
 #define inflateInit2 mz_inflateInit2
+#define inflateReset mz_inflateReset
 #define inflate mz_inflate
 #define inflateEnd mz_inflateEnd
 #define uncompress mz_uncompress

miniz_tdef.c

@@ -738,13 +738,13 @@ static int tdefl_flush_block(tdefl_compressor *d, int flush)
 
 #if MINIZ_USE_UNALIGNED_LOADS_AND_STORES
 #ifdef MINIZ_UNALIGNED_USE_MEMCPY
-static inline mz_uint16 TDEFL_READ_UNALIGNED_WORD(const mz_uint8* p)
+static mz_uint16 TDEFL_READ_UNALIGNED_WORD(const mz_uint8* p)
 {
 	mz_uint16 ret;
 	memcpy(&ret, p, sizeof(mz_uint16));
 	return ret;
 }
-static inline mz_uint16 TDEFL_READ_UNALIGNED_WORD2(const mz_uint16* p)
+static mz_uint16 TDEFL_READ_UNALIGNED_WORD2(const mz_uint16* p)
 {
 	mz_uint16 ret;
 	memcpy(&ret, p, sizeof(mz_uint16));
@@ -853,6 +853,16 @@ static MZ_FORCEINLINE void tdefl_find_match(tdefl_compressor *d, mz_uint lookahe
 #endif /* #if MINIZ_USE_UNALIGNED_LOADS_AND_STORES */
 
 #if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN
+#ifdef MINIZ_UNALIGNED_USE_MEMCPY
+static mz_uint32 TDEFL_READ_UNALIGNED_WORD32(const mz_uint8* p)
+{
+	mz_uint32 ret;
+	memcpy(&ret, p, sizeof(mz_uint32));
+	return ret;
+}
+#else
+#define TDEFL_READ_UNALIGNED_WORD32(p) *(const mz_uint32 *)(p)
+#endif
 static mz_bool tdefl_compress_fast(tdefl_compressor *d)
 {
     /* Faster, minimally featured LZRW1-style match+parse loop with better register utilization. Intended for applications where raw throughput is valued more highly than ratio. */
@@ -887,12 +897,12 @@ static mz_bool tdefl_compress_fast(tdefl_compressor *d)
         {
             mz_uint cur_match_dist, cur_match_len = 1;
             mz_uint8 *pCur_dict = d->m_dict + cur_pos;
-            mz_uint first_trigram = (*(const mz_uint32 *)pCur_dict) & 0xFFFFFF;
+            mz_uint first_trigram = TDEFL_READ_UNALIGNED_WORD32(pCur_dict) & 0xFFFFFF;
             mz_uint hash = (first_trigram ^ (first_trigram >> (24 - (TDEFL_LZ_HASH_BITS - 8)))) & TDEFL_LEVEL1_HASH_SIZE_MASK;
             mz_uint probe_pos = d->m_hash[hash];
             d->m_hash[hash] = (mz_uint16)lookahead_pos;
 
-            if (((cur_match_dist = (mz_uint16)(lookahead_pos - probe_pos)) <= dict_size) && ((*(const mz_uint32 *)(d->m_dict + (probe_pos &= TDEFL_LZ_DICT_SIZE_MASK)) & 0xFFFFFF) == first_trigram))
+            if (((cur_match_dist = (mz_uint16)(lookahead_pos - probe_pos)) <= dict_size) && ((TDEFL_READ_UNALIGNED_WORD32(d->m_dict + (probe_pos &= TDEFL_LZ_DICT_SIZE_MASK)) & 0xFFFFFF) == first_trigram))
             {
                 const mz_uint16 *p = (const mz_uint16 *)pCur_dict;
                 const mz_uint16 *q = (const mz_uint16 *)(d->m_dict + probe_pos);
@@ -922,7 +932,11 @@ static mz_bool tdefl_compress_fast(tdefl_compressor *d)
                     cur_match_dist--;
 
                     pLZ_code_buf[0] = (mz_uint8)(cur_match_len - TDEFL_MIN_MATCH_LEN);
+#ifdef MINIZ_UNALIGNED_USE_MEMCPY
+					memcpy(&pLZ_code_buf[1], &cur_match_dist, sizeof(cur_match_dist));
+#else
                     *(mz_uint16 *)(&pLZ_code_buf[1]) = (mz_uint16)cur_match_dist;
+#endif
                     pLZ_code_buf += 3;
                     *pLZ_flags = (mz_uint8)((*pLZ_flags >> 1) | 0x80);
 
@@ -1541,6 +1555,7 @@ void *tdefl_write_image_to_png_file_in_memory(const void *pImage, int w, int h,
     return tdefl_write_image_to_png_file_in_memory_ex(pImage, w, h, num_chans, pLen_out, 6, MZ_FALSE);
 }
 
+#ifndef MINIZ_NO_MALLOC
 /* Allocate the tdefl_compressor and tinfl_decompressor structures in C so that */
 /* non-C language bindings to tdefL_ and tinfl_ API don't need to worry about */
 /* structure size and allocation mechanism. */
@@ -1553,6 +1568,7 @@ void tdefl_compressor_free(tdefl_compressor *pComp)
 {
     MZ_FREE(pComp);
 }
+#endif
 
 #ifdef _MSC_VER
 #pragma warning(pop)

miniz_tdef.h

@@ -177,11 +177,13 @@ mz_uint32 tdefl_get_adler32(tdefl_compressor *d);
 /* strategy may be either MZ_DEFAULT_STRATEGY, MZ_FILTERED, MZ_HUFFMAN_ONLY, MZ_RLE, or MZ_FIXED */
 mz_uint tdefl_create_comp_flags_from_zip_params(int level, int window_bits, int strategy);
 
+#ifndef MINIZ_NO_MALLOC
 /* Allocate the tdefl_compressor structure in C so that */
 /* non-C language bindings to tdefl_ API don't need to worry about */
 /* structure size and allocation mechanism. */
-tdefl_compressor *tdefl_compressor_alloc();
+tdefl_compressor *tdefl_compressor_alloc(void);
 void tdefl_compressor_free(tdefl_compressor *pComp);
+#endif
 
 #ifdef __cplusplus
 }

miniz_tinfl.c

@@ -523,8 +523,12 @@ tinfl_status tinfl_decompress(tinfl_decompressor *r, const mz_uint8 *pIn_buf_nex
                     const mz_uint8 *pSrc_end = pSrc + (counter & ~7);
                     do
                     {
+#ifdef MINIZ_UNALIGNED_USE_MEMCPY
+						memcpy(pOut_buf_cur, pSrc, sizeof(mz_uint32)*2);
+#else
                         ((mz_uint32 *)pOut_buf_cur)[0] = ((const mz_uint32 *)pSrc)[0];
                         ((mz_uint32 *)pOut_buf_cur)[1] = ((const mz_uint32 *)pSrc)[1];
+#endif
                         pOut_buf_cur += 8;
                     } while ((pSrc += 8) < pSrc_end);
                     if ((counter &= 7) < 3)
@@ -540,18 +544,19 @@ tinfl_status tinfl_decompress(tinfl_decompressor *r, const mz_uint8 *pIn_buf_nex
                     }
                 }
 #endif
-                do
+                while(counter>2)
                 {
                     pOut_buf_cur[0] = pSrc[0];
                     pOut_buf_cur[1] = pSrc[1];
                     pOut_buf_cur[2] = pSrc[2];
                     pOut_buf_cur += 3;
                     pSrc += 3;
-                } while ((int)(counter -= 3) > 2);
-                if ((int)counter > 0)
+					counter -= 3;
+                }
+                if (counter > 0)
                 {
                     pOut_buf_cur[0] = pSrc[0];
-                    if ((int)counter > 1)
+                    if (counter > 1)
                         pOut_buf_cur[1] = pSrc[1];
                     pOut_buf_cur += counter;
                 }
@@ -715,6 +720,7 @@ int tinfl_decompress_mem_to_callback(const void *pIn_buf, size_t *pIn_buf_size,
     return result;
 }
 
+#ifndef MINIZ_NO_MALLOC
 tinfl_decompressor *tinfl_decompressor_alloc()
 {
     tinfl_decompressor *pDecomp = (tinfl_decompressor *)MZ_MALLOC(sizeof(tinfl_decompressor));
@@ -727,6 +733,7 @@ void tinfl_decompressor_free(tinfl_decompressor *pDecomp)
 {
     MZ_FREE(pDecomp);
 }
+#endif
 
 #ifdef __cplusplus
 }

miniz_tinfl.h

@@ -41,12 +41,13 @@ int tinfl_decompress_mem_to_callback(const void *pIn_buf, size_t *pIn_buf_size,
 struct tinfl_decompressor_tag;
 typedef struct tinfl_decompressor_tag tinfl_decompressor;
 
+#ifndef MINIZ_NO_MALLOC
 /* Allocate the tinfl_decompressor structure in C so that */
 /* non-C language bindings to tinfl_ API don't need to worry about */
 /* structure size and allocation mechanism. */
-
-tinfl_decompressor *tinfl_decompressor_alloc();
+tinfl_decompressor *tinfl_decompressor_alloc(void);
 void tinfl_decompressor_free(tinfl_decompressor *pDecomp);
+#endif
 
 /* Max size of LZ dictionary. */
 #define TINFL_LZ_DICT_SIZE 32768

miniz_zip.c

@@ -62,8 +62,8 @@ static FILE *mz_freopen(const char *pPath, const char *pMode, FILE *pStream)
 #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_FILE_STAT_STRUCT _stat64
+#define MZ_FILE_STAT _stat64
 #define MZ_FFLUSH fflush
 #define MZ_FREOPEN mz_freopen
 #define MZ_DELETE_FILE remove
@@ -97,7 +97,7 @@ static FILE *mz_freopen(const char *pPath, const char *pMode, FILE *pStream)
 #define MZ_FFLUSH fflush
 #define MZ_FREOPEN(f, m, s) freopen(f, m, s)
 #define MZ_DELETE_FILE remove
-#elif defined(__GNUC__) && _LARGEFILE64_SOURCE
+#elif defined(__GNUC__) && defined(_LARGEFILE64_SOURCE)
 #ifndef MINIZ_NO_TIME
 #include <utime.h>
 #endif
@@ -351,7 +351,8 @@ static MZ_FORCEINLINE mz_bool mz_zip_array_push_back(mz_zip_archive *pZip, mz_zi
     size_t orig_size = pArray->m_size;
     if (!mz_zip_array_resize(pZip, pArray, orig_size + n, MZ_TRUE))
         return MZ_FALSE;
-    memcpy((mz_uint8 *)pArray->m_p + orig_size * pArray->m_element_size, pElements, n * pArray->m_element_size);
+    if (n > 0)
+        memcpy((mz_uint8 *)pArray->m_p + orig_size * pArray->m_element_size, pElements, n * pArray->m_element_size);
     return MZ_TRUE;
 }
 
@@ -748,21 +749,47 @@ static mz_bool mz_zip_reader_read_central_dir(mz_zip_archive *pZip, mz_uint flag
 
                 if (extra_size_remaining)
                 {
-                    const mz_uint8 *pExtra_data = p + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + filename_size;
+					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))
-                            return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
+						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)
-                            return mz_zip_set_error(pZip, MZ_ZIP_INVALID_HEADER_OR_CORRUPTED);
+						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)
                         {
@@ -775,6 +802,8 @@ static mz_bool mz_zip_reader_read_central_dir(mz_zip_archive *pZip, mz_uint flag
                         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);
                 }
             }
 
@@ -1971,7 +2000,7 @@ size_t mz_zip_reader_extract_iter_read(mz_zip_reader_extract_iter_state* pState,
     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 = MZ_MIN( buf_size, pState->comp_remaining );
+        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)
@@ -3048,7 +3077,7 @@ static mz_bool mz_zip_writer_add_to_central_dir(mz_zip_archive *pZip, const char
     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, 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))
+    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)) ||
@@ -3072,13 +3101,7 @@ static mz_bool mz_zip_writer_validate_archive_name(const char *pArchive_name)
     if (*pArchive_name == '/')
         return MZ_FALSE;
 
-    while (*pArchive_name)
-    {
-        if ((*pArchive_name == '\\') || (*pArchive_name == ':'))
-            return MZ_FALSE;
-
-        pArchive_name++;
-    }
+    /* 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;
 }
@@ -3186,6 +3209,17 @@ mz_bool mz_zip_writer_add_mem_ex_v2(mz_zip_archive *pZip, const char *pArchive_n
     }
 #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);
@@ -3258,7 +3292,7 @@ mz_bool mz_zip_writer_add_mem_ex_v2(mz_zip_archive *pZip, const char *pArchive_n
                                                                (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, extra_size + user_extra_data_len, 0, 0, 0, method, bit_flags, dos_time, dos_date))
+        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))
@@ -3285,7 +3319,7 @@ mz_bool mz_zip_writer_add_mem_ex_v2(mz_zip_archive *pZip, const char *pArchive_n
     {
         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, user_extra_data_len, 0, 0, 0, method, bit_flags, dos_time, dos_date))
+        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))
@@ -3301,24 +3335,13 @@ mz_bool mz_zip_writer_add_mem_ex_v2(mz_zip_archive *pZip, const char *pArchive_n
         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);
+	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 (!(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;
-        }
-    }
+		cur_archive_file_ofs += user_extra_data_len;
+	}
 
     if (store_data_uncompressed)
     {
@@ -3389,7 +3412,7 @@ mz_bool mz_zip_writer_add_mem_ex_v2(mz_zip_archive *pZip, const char *pArchive_n
                                                            (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, extra_size, pComment,
+    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;
@@ -3400,8 +3423,7 @@ mz_bool mz_zip_writer_add_mem_ex_v2(mz_zip_archive *pZip, const char *pArchive_n
     return MZ_TRUE;
 }
 
-#ifndef MINIZ_NO_STDIO
-mz_bool mz_zip_writer_add_cfile(mz_zip_archive *pZip, const char *pArchive_name, MZ_FILE *pSrc_file, mz_uint64 size_to_add, const MZ_TIME_T *pFile_time, const void *pComment, mz_uint16 comment_size, mz_uint level_and_flags,
+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 size_to_add, 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_ZIP_LDH_BIT_FLAG_HAS_LOCATOR;
@@ -3414,6 +3436,7 @@ mz_bool mz_zip_writer_add_cfile(mz_zip_archive *pZip, const char *pArchive_name,
     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;
 
     if (!(level_and_flags & MZ_ZIP_FLAG_ASCII_FILENAME))
         gen_flags |= MZ_ZIP_GENERAL_PURPOSE_BIT_FLAG_UTF8;
@@ -3469,7 +3492,7 @@ mz_bool mz_zip_writer_add_cfile(mz_zip_archive *pZip, const char *pArchive_name,
     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 
+        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)
         {
@@ -3516,7 +3539,7 @@ mz_bool mz_zip_writer_add_cfile(mz_zip_archive *pZip, const char *pArchive_name,
                                                                (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, extra_size + user_extra_data_len, 0, 0, 0, method, gen_flags, dos_time, dos_date))
+        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))
@@ -3540,7 +3563,7 @@ mz_bool mz_zip_writer_add_cfile(mz_zip_archive *pZip, const char *pArchive_name,
     {
         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, user_extra_data_len, 0, 0, 0, method, gen_flags, dos_time, dos_date))
+        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))
@@ -3578,11 +3601,12 @@ mz_bool mz_zip_writer_add_cfile(mz_zip_archive *pZip, const char *pArchive_name,
             while (uncomp_remaining)
             {
                 mz_uint n = (mz_uint)MZ_MIN((mz_uint64)MZ_ZIP_MAX_IO_BUF_SIZE, uncomp_remaining);
-                if ((MZ_FREAD(pRead_buf, 1, n, pSrc_file) != n) || (pZip->m_pWrite(pZip->m_pIO_opaque, cur_archive_file_ofs, pRead_buf, n) != n))
+                if ((read_callback(callback_opaque, file_ofs, pRead_buf, n) != n) || (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_READ_FAILED);
                 }
+				file_ofs += n;
                 uncomp_crc32 = (mz_uint32)mz_crc32(uncomp_crc32, (const mz_uint8 *)pRead_buf, n);
                 uncomp_remaining -= n;
                 cur_archive_file_ofs += n;
@@ -3617,12 +3641,13 @@ mz_bool mz_zip_writer_add_cfile(mz_zip_archive *pZip, const char *pArchive_name,
                 tdefl_status status;
                 tdefl_flush flush = TDEFL_NO_FLUSH;
 
-                if (MZ_FREAD(pRead_buf, 1, in_buf_size, pSrc_file) != in_buf_size)
+                if (read_callback(callback_opaque, file_ofs, pRead_buf, in_buf_size)!= in_buf_size)
                 {
                     mz_zip_set_error(pZip, MZ_ZIP_FILE_READ_FAILED);
                     break;
                 }
 
+				file_ofs += in_buf_size;
                 uncomp_crc32 = (mz_uint32)mz_crc32(uncomp_crc32, (const mz_uint8 *)pRead_buf, in_buf_size);
                 uncomp_remaining -= in_buf_size;
 
@@ -3690,7 +3715,7 @@ mz_bool mz_zip_writer_add_cfile(mz_zip_archive *pZip, const char *pArchive_name,
                                                            (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, extra_size, pComment, comment_size,
+    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;
@@ -3701,6 +3726,26 @@ mz_bool mz_zip_writer_add_cfile(mz_zip_archive *pZip, const char *pArchive_name,
     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 size_to_add, 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, size_to_add, 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;

miniz_zip.h

@@ -237,13 +237,6 @@ MZ_FILE *mz_zip_get_cfile(mz_zip_archive *pZip);
 /* Reads n bytes of raw archive data, starting at file offset file_ofs, to pBuf. */
 size_t mz_zip_read_archive_data(mz_zip_archive *pZip, mz_uint64 file_ofs, void *pBuf, size_t n);
 
-/* Attempts to locates a file in the archive's central directory. */
-/* Valid flags: MZ_ZIP_FLAG_CASE_SENSITIVE, MZ_ZIP_FLAG_IGNORE_PATH */
-/* Returns -1 if the file cannot be found. */
-int mz_zip_locate_file(mz_zip_archive *pZip, const char *pName, const char *pComment, mz_uint flags);
-/* Returns MZ_FALSE if the file cannot be found. */
-mz_bool mz_zip_locate_file_v2(mz_zip_archive *pZip, const char *pName, const char *pComment, mz_uint flags, mz_uint32 *pIndex);
-
 /* All mz_zip funcs set the m_last_error field in the mz_zip_archive struct. These functions retrieve/manipulate this field. */
 /* Note that the m_last_error functionality is not thread safe. */
 mz_zip_error mz_zip_set_last_error(mz_zip_archive *pZip, mz_zip_error err_num);
@@ -385,6 +378,12 @@ mz_bool mz_zip_writer_add_mem_ex_v2(mz_zip_archive *pZip, const char *pArchive_n
                                     mz_uint64 uncomp_size, mz_uint32 uncomp_crc32, MZ_TIME_T *last_modified, const char *user_extra_data_local, mz_uint user_extra_data_local_len,
                                     const char *user_extra_data_central, mz_uint user_extra_data_central_len);
 
+/* Adds the contents of a file to an archive. This function also records the disk file's modified time into the archive. */
+/* File data is supplied via a read callback function. User mz_zip_writer_add_(c)file to add a file directly.*/
+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 size_to_add,
+	const MZ_TIME_T *pFile_time, const void *pComment, mz_uint16 comment_size, mz_uint level_and_flags, const char *user_extra_data_local, mz_uint user_extra_data_local_len,
+	const char *user_extra_data_central, mz_uint user_extra_data_central_len);
+
 #ifndef MINIZ_NO_STDIO
 /* Adds the contents of a disk file to an archive. This function also records the disk file's modified time into the archive. */
 /* level_and_flags - compression level (0-10, see MZ_BEST_SPEED, MZ_BEST_COMPRESSION, etc.) logically OR'd with zero or more mz_zip_flags, or just set to MZ_DEFAULT_COMPRESSION. */