diff options
Diffstat (limited to 'v_windows/v/thirdparty/zip/zip.c')
| -rw-r--r-- | v_windows/v/thirdparty/zip/zip.c | 1034 |
1 files changed, 1034 insertions, 0 deletions
diff --git a/v_windows/v/thirdparty/zip/zip.c b/v_windows/v/thirdparty/zip/zip.c new file mode 100644 index 0000000..503df25 --- /dev/null +++ b/v_windows/v/thirdparty/zip/zip.c @@ -0,0 +1,1034 @@ +/* + * 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 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. + */ +#define __STDC_WANT_LIB_EXT1__ 1 + +#include <errno.h> +#include <sys/stat.h> +#include <time.h> + +#if defined(_WIN32) || defined(__WIN32__) || defined(_MSC_VER) || \ + defined(__MINGW32__) +/* Win32, DOS, MSVC, MSVS */ +#include <direct.h> + +#define MKDIR(DIRNAME) _mkdir(DIRNAME) +#define STRCLONE(STR) ((STR) ? _strdup(STR) : NULL) +#define HAS_DEVICE(P) \ + ((((P)[0] >= 'A' && (P)[0] <= 'Z') || ((P)[0] >= 'a' && (P)[0] <= 'z')) && \ + (P)[1] == ':') +#define FILESYSTEM_PREFIX_LEN(P) (HAS_DEVICE(P) ? 2 : 0) + +#else + +#include <unistd.h> // needed for symlink() on BSD +int symlink(const char *target, const char *linkpath); // needed on Linux + +#define MKDIR(DIRNAME) mkdir(DIRNAME, 0755) +#define STRCLONE(STR) ((STR) ? strdup(STR) : NULL) + +#endif + +#include "miniz.h" +#include "zip.h" + +#ifndef HAS_DEVICE +#define HAS_DEVICE(P) 0 +#endif + +#ifndef FILESYSTEM_PREFIX_LEN +#define FILESYSTEM_PREFIX_LEN(P) 0 +#endif + +#ifndef ISSLASH +#define ISSLASH(C) ((C) == '/' || (C) == '\\') +#endif + +#define CLEANUP(ptr) \ + do { \ + if (ptr) { \ + free((void *)ptr); \ + ptr = NULL; \ + } \ + } while (0) + +static const char *base_name(const char *name) { + char const *p; + char const *base = name += FILESYSTEM_PREFIX_LEN(name); + int all_slashes = 1; + + for (p = name; *p; p++) { + if (ISSLASH(*p)) + base = p + 1; + else + all_slashes = 0; + } + + /* If NAME is all slashes, arrange to return `/'. */ + if (*base == '\0' && ISSLASH(*name) && all_slashes) + --base; + + return base; +} + +static int mkpath(char *path) { + char *p; + char npath[MAX_PATH + 1]; + int len = 0; + int has_device = HAS_DEVICE(path); + + memset(npath, 0, MAX_PATH + 1); + if (has_device) { + // only on windows + npath[0] = path[0]; + npath[1] = path[1]; + len = 2; + } + for (p = path + len; *p && len < MAX_PATH; p++) { + if (ISSLASH(*p) && ((!has_device && len > 0) || (has_device && len > 2))) { +#if defined(_WIN32) || defined(__WIN32__) || defined(_MSC_VER) || \ + defined(__MINGW32__) +#else + if ('\\' == *p) { + *p = '/'; + } +#endif + + if (MKDIR(npath) == -1) { + if (errno != EEXIST) { + return -1; + } + } + } + npath[len++] = *p; + } + + return 0; +} + +static char *strrpl(const char *str, size_t n, char oldchar, char newchar) { + char c; + size_t i; + char *rpl = (char *)calloc((1 + n), sizeof(char)); + char *begin = rpl; + if (!rpl) { + return NULL; + } + + for (i = 0; (i < n) && (c = *str++); ++i) { + if (c == oldchar) { + c = newchar; + } + *rpl++ = c; + } + + return begin; +} + +struct zip_entry_t { + int index; + char *name; + mz_uint64 uncomp_size; + mz_uint64 comp_size; + mz_uint32 uncomp_crc32; + mz_uint64 offset; + mz_uint8 header[MZ_ZIP_LOCAL_DIR_HEADER_SIZE]; + mz_uint64 header_offset; + mz_uint16 method; + mz_zip_writer_add_state state; + tdefl_compressor comp; + mz_uint32 external_attr; + time_t m_time; +}; + +struct zip_t { + mz_zip_archive archive; + mz_uint level; + struct zip_entry_t entry; +}; + +struct zip_t *zip_open(const char *zipname, int level, char mode) { + struct zip_t *zip = NULL; + + if (!zipname || strlen(zipname) < 1) { + // zip_t archive name is empty or NULL + goto cleanup; + } + + if (level < 0) + level = MZ_DEFAULT_LEVEL; + if ((level & 0xF) > MZ_UBER_COMPRESSION) { + // Wrong compression level + goto cleanup; + } + + zip = (struct zip_t *)calloc((size_t)1, sizeof(struct zip_t)); + if (!zip) + goto cleanup; + + zip->level = (mz_uint)level; + switch (mode) { + case 'w': + // Create a new archive. + if (!mz_zip_writer_init_file(&(zip->archive), zipname, 0)) { + // Cannot initialize zip_archive writer + goto cleanup; + } + break; + + case 'r': + case 'a': + if (!mz_zip_reader_init_file( + &(zip->archive), zipname, + zip->level | MZ_ZIP_FLAG_DO_NOT_SORT_CENTRAL_DIRECTORY)) { + // An archive file does not exist or cannot initialize + // zip_archive reader + goto cleanup; + } + if (mode == 'a' && + !mz_zip_writer_init_from_reader(&(zip->archive), zipname)) { + mz_zip_reader_end(&(zip->archive)); + goto cleanup; + } + break; + + default: + goto cleanup; + } + + return zip; + +cleanup: + CLEANUP(zip); + return NULL; +} + +void zip_close(struct zip_t *zip) { + if (zip) { + // Always finalize, even if adding failed for some reason, so we have a + // valid central directory. + mz_zip_writer_finalize_archive(&(zip->archive)); + + mz_zip_writer_end(&(zip->archive)); + mz_zip_reader_end(&(zip->archive)); + + CLEANUP(zip); + } +} + +int zip_is64(struct zip_t *zip) { + if (!zip) { + // zip_t handler is not initialized + return -1; + } + + if (!zip->archive.m_pState) { + // zip state is not initialized + return -1; + } + + return (int)zip->archive.m_pState->m_zip64; +} + +int zip_entry_open(struct zip_t *zip, const char *entryname) { + size_t entrylen = 0; + mz_zip_archive *pzip = NULL; + mz_uint num_alignment_padding_bytes, level; + mz_zip_archive_file_stat stats; + + if (!zip || !entryname) { + return -1; + } + + entrylen = strlen(entryname); + if (entrylen < 1) { + return -1; + } + + /* + .ZIP File Format Specification Version: 6.3.3 + + 4.4.17.1 The name of the file, with optional relative path. + The path stored MUST not contain a drive or + device letter, or a leading slash. All slashes + MUST be forward slashes '/' as opposed to + backwards slashes '\' for compatibility with Amiga + and UNIX file systems etc. If input came from standard + input, there is no file name field. + */ + zip->entry.name = strrpl(entryname, entrylen, '\\', '/'); + if (!zip->entry.name) { + // Cannot parse zip entry name + return -1; + } + + pzip = &(zip->archive); + if (pzip->m_zip_mode == MZ_ZIP_MODE_READING) { + zip->entry.index = + mz_zip_reader_locate_file(pzip, zip->entry.name, NULL, 0); + if (zip->entry.index < 0) { + goto cleanup; + } + + if (!mz_zip_reader_file_stat(pzip, (mz_uint)zip->entry.index, &stats)) { + goto cleanup; + } + + zip->entry.comp_size = stats.m_comp_size; + zip->entry.uncomp_size = stats.m_uncomp_size; + zip->entry.uncomp_crc32 = stats.m_crc32; + zip->entry.offset = stats.m_central_dir_ofs; + zip->entry.header_offset = stats.m_local_header_ofs; + zip->entry.method = stats.m_method; + zip->entry.external_attr = stats.m_external_attr; +#ifndef MINIZ_NO_TIME + zip->entry.m_time = stats.m_time; +#endif + + return 0; + } + + zip->entry.index = (int)zip->archive.m_total_files; + zip->entry.comp_size = 0; + zip->entry.uncomp_size = 0; + zip->entry.uncomp_crc32 = MZ_CRC32_INIT; + zip->entry.offset = zip->archive.m_archive_size; + zip->entry.header_offset = zip->archive.m_archive_size; + memset(zip->entry.header, 0, MZ_ZIP_LOCAL_DIR_HEADER_SIZE * sizeof(mz_uint8)); + zip->entry.method = 0; + + // UNIX or APPLE +#if MZ_PLATFORM == 3 || MZ_PLATFORM == 19 + // regular file with rw-r--r-- persmissions + zip->entry.external_attr = (mz_uint32)(0100644) << 16; +#else + zip->entry.external_attr = 0; +#endif + + num_alignment_padding_bytes = + mz_zip_writer_compute_padding_needed_for_file_alignment(pzip); + + if (!pzip->m_pState || (pzip->m_zip_mode != MZ_ZIP_MODE_WRITING)) { + // Wrong zip mode + goto cleanup; + } + if (zip->level & MZ_ZIP_FLAG_COMPRESSED_DATA) { + // Wrong zip compression level + goto cleanup; + } + // no zip64 support yet + if ((pzip->m_total_files == 0xFFFF) || + ((pzip->m_archive_size + num_alignment_padding_bytes + + MZ_ZIP_LOCAL_DIR_HEADER_SIZE + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE + + entrylen) > 0xFFFFFFFF)) { + // No zip64 support yet + goto cleanup; + } + if (!mz_zip_writer_write_zeros(pzip, zip->entry.offset, + num_alignment_padding_bytes + + sizeof(zip->entry.header))) { + // Cannot memset zip entry header + goto cleanup; + } + + zip->entry.header_offset += num_alignment_padding_bytes; + if (pzip->m_file_offset_alignment) { + MZ_ASSERT( + (zip->entry.header_offset & (pzip->m_file_offset_alignment - 1)) == 0); + } + zip->entry.offset += num_alignment_padding_bytes + sizeof(zip->entry.header); + + if (pzip->m_pWrite(pzip->m_pIO_opaque, zip->entry.offset, zip->entry.name, + entrylen) != entrylen) { + // Cannot write data to zip entry + goto cleanup; + } + + zip->entry.offset += entrylen; + level = zip->level & 0xF; + if (level) { + zip->entry.state.m_pZip = pzip; + zip->entry.state.m_cur_archive_file_ofs = zip->entry.offset; + zip->entry.state.m_comp_size = 0; + + if (tdefl_init(&(zip->entry.comp), mz_zip_writer_add_put_buf_callback, + &(zip->entry.state), + (int)tdefl_create_comp_flags_from_zip_params( + (int)level, -15, MZ_DEFAULT_STRATEGY)) != + TDEFL_STATUS_OKAY) { + // Cannot initialize the zip compressor + goto cleanup; + } + } + + zip->entry.m_time = time(NULL); + + return 0; + +cleanup: + CLEANUP(zip->entry.name); + return -1; +} + +int zip_entry_openbyindex(struct zip_t *zip, int index) { + mz_zip_archive *pZip = NULL; + mz_zip_archive_file_stat stats; + mz_uint namelen; + const mz_uint8 *pHeader; + const char *pFilename; + + if (!zip) { + // zip_t handler is not initialized + return -1; + } + + pZip = &(zip->archive); + if (pZip->m_zip_mode != MZ_ZIP_MODE_READING) { + // open by index requires readonly mode + return -1; + } + + if (index < 0 || (mz_uint)index >= pZip->m_total_files) { + // index out of range + return -1; + } + + if (!(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, index)))) { + // cannot find header in central directory + return -1; + } + + namelen = MZ_READ_LE16(pHeader + MZ_ZIP_CDH_FILENAME_LEN_OFS); + pFilename = (const char *)pHeader + MZ_ZIP_CENTRAL_DIR_HEADER_SIZE; + + /* + .ZIP File Format Specification Version: 6.3.3 + + 4.4.17.1 The name of the file, with optional relative path. + The path stored MUST not contain a drive or + device letter, or a leading slash. All slashes + MUST be forward slashes '/' as opposed to + backwards slashes '\' for compatibility with Amiga + and UNIX file systems etc. If input came from standard + input, there is no file name field. + */ + zip->entry.name = strrpl(pFilename, namelen, '\\', '/'); + if (!zip->entry.name) { + // local entry name is NULL + return -1; + } + + if (!mz_zip_reader_file_stat(pZip, (mz_uint)index, &stats)) { + return -1; + } + + zip->entry.index = index; + zip->entry.comp_size = stats.m_comp_size; + zip->entry.uncomp_size = stats.m_uncomp_size; + zip->entry.uncomp_crc32 = stats.m_crc32; + zip->entry.offset = stats.m_central_dir_ofs; + zip->entry.header_offset = stats.m_local_header_ofs; + zip->entry.method = stats.m_method; + zip->entry.external_attr = stats.m_external_attr; +#ifndef MINIZ_NO_TIME + zip->entry.m_time = stats.m_time; +#endif + + return 0; +} + +int zip_entry_close(struct zip_t *zip) { + mz_zip_archive *pzip = NULL; + mz_uint level; + tdefl_status done; + mz_uint16 entrylen; + mz_uint16 dos_time, dos_date; + int status = -1; + + if (!zip) { + // zip_t handler is not initialized + goto cleanup; + } + + pzip = &(zip->archive); + if (pzip->m_zip_mode == MZ_ZIP_MODE_READING) { + status = 0; + goto cleanup; + } + + level = zip->level & 0xF; + if (level) { + done = tdefl_compress_buffer(&(zip->entry.comp), "", 0, TDEFL_FINISH); + if (done != TDEFL_STATUS_DONE && done != TDEFL_STATUS_OKAY) { + // Cannot flush compressed buffer + goto cleanup; + } + zip->entry.comp_size = zip->entry.state.m_comp_size; + zip->entry.offset = zip->entry.state.m_cur_archive_file_ofs; + zip->entry.method = MZ_DEFLATED; + } + + entrylen = (mz_uint16)strlen(zip->entry.name); + // no zip64 support yet + if ((zip->entry.comp_size > 0xFFFFFFFF) || (zip->entry.offset > 0xFFFFFFFF)) { + // No zip64 support, yet + goto cleanup; + } + +#if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_ARCHIVE_WRITING_APIS) + mz_zip_time_t_to_dos_time(zip->entry.m_time, &dos_time, &dos_date); +#endif + if (!mz_zip_writer_create_local_dir_header( + pzip, zip->entry.header, entrylen, 0, zip->entry.uncomp_size, + zip->entry.comp_size, zip->entry.uncomp_crc32, zip->entry.method, 0, + dos_time, dos_date)) { + // Cannot create zip entry header + goto cleanup; + } + + if (pzip->m_pWrite(pzip->m_pIO_opaque, zip->entry.header_offset, + zip->entry.header, + sizeof(zip->entry.header)) != sizeof(zip->entry.header)) { + // Cannot write zip entry header + goto cleanup; + } + + if (!mz_zip_writer_add_to_central_dir( + pzip, zip->entry.name, entrylen, NULL, 0, "", 0, + zip->entry.uncomp_size, zip->entry.comp_size, zip->entry.uncomp_crc32, + zip->entry.method, 0, dos_time, dos_date, zip->entry.header_offset, + zip->entry.external_attr)) { + // Cannot write to zip central dir + goto cleanup; + } + + pzip->m_total_files++; + pzip->m_archive_size = zip->entry.offset; + status = 0; + +cleanup: + if (zip) { + zip->entry.m_time = 0; + CLEANUP(zip->entry.name); + } + return status; +} + +const char *zip_entry_name(struct zip_t *zip) { + if (!zip) { + // zip_t handler is not initialized + return NULL; + } + + return zip->entry.name; +} + +int zip_entry_index(struct zip_t *zip) { + if (!zip) { + // zip_t handler is not initialized + return -1; + } + + return zip->entry.index; +} + +int zip_entry_isdir(struct zip_t *zip) { + if (!zip) { + // zip_t handler is not initialized + return -1; + } + + if (zip->entry.index < 0) { + // zip entry is not opened + return -1; + } + + return (int)mz_zip_reader_is_file_a_directory(&zip->archive, + (mz_uint)zip->entry.index); +} + +unsigned long long zip_entry_size(struct zip_t *zip) { + return zip ? zip->entry.uncomp_size : 0; +} + +unsigned int zip_entry_crc32(struct zip_t *zip) { + return zip ? zip->entry.uncomp_crc32 : 0; +} + +int zip_entry_write(struct zip_t *zip, const void *buf, size_t bufsize) { + mz_uint level; + mz_zip_archive *pzip = NULL; + tdefl_status status; + + if (!zip) { + // zip_t handler is not initialized + return -1; + } + + pzip = &(zip->archive); + if (buf && bufsize > 0) { + zip->entry.uncomp_size += bufsize; + zip->entry.uncomp_crc32 = (mz_uint32)mz_crc32( + zip->entry.uncomp_crc32, (const mz_uint8 *)buf, bufsize); + + level = zip->level & 0xF; + if (!level) { + if ((pzip->m_pWrite(pzip->m_pIO_opaque, zip->entry.offset, buf, + bufsize) != bufsize)) { + // Cannot write buffer + return -1; + } + zip->entry.offset += bufsize; + zip->entry.comp_size += bufsize; + } else { + status = tdefl_compress_buffer(&(zip->entry.comp), buf, bufsize, + TDEFL_NO_FLUSH); + if (status != TDEFL_STATUS_DONE && status != TDEFL_STATUS_OKAY) { + // Cannot compress buffer + return -1; + } + } + } + + return 0; +} + +int zip_entry_fwrite(struct zip_t *zip, const char *filename) { + int status = 0; + size_t n = 0; + FILE *stream = NULL; + mz_uint8 buf[MZ_ZIP_MAX_IO_BUF_SIZE]; + struct MZ_FILE_STAT_STRUCT file_stat; + + if (!zip) { + // zip_t handler is not initialized + return -1; + } + + memset(buf, 0, MZ_ZIP_MAX_IO_BUF_SIZE); + memset((void *)&file_stat, 0, sizeof(struct MZ_FILE_STAT_STRUCT)); + if (MZ_FILE_STAT(filename, &file_stat) != 0) { + // problem getting information - check errno + return -1; + } + + if ((file_stat.st_mode & 0200) == 0) { + // MS-DOS read-only attribute + zip->entry.external_attr |= 0x01; + } + zip->entry.external_attr |= (mz_uint32)((file_stat.st_mode & 0xFFFF) << 16); + zip->entry.m_time = file_stat.st_mtime; + +#if defined(_MSC_VER) + if (fopen_s(&stream, filename, "rb")) +#else + if (!(stream = fopen(filename, "rb"))) +#endif + { + // Cannot open filename + return -1; + } + + while ((n = fread(buf, sizeof(mz_uint8), MZ_ZIP_MAX_IO_BUF_SIZE, stream)) > + 0) { + if (zip_entry_write(zip, buf, n) < 0) { + status = -1; + break; + } + } + fclose(stream); + + return status; +} + +ssize_t zip_entry_read(struct zip_t *zip, void **buf, size_t *bufsize) { + mz_zip_archive *pzip = NULL; + mz_uint idx; + size_t size = 0; + + if (!zip) { + // zip_t handler is not initialized + return -1; + } + + pzip = &(zip->archive); + if (pzip->m_zip_mode != MZ_ZIP_MODE_READING || zip->entry.index < 0) { + // the entry is not found or we do not have read access + return -1; + } + + idx = (mz_uint)zip->entry.index; + if (mz_zip_reader_is_file_a_directory(pzip, idx)) { + // the entry is a directory + return -1; + } + + *buf = mz_zip_reader_extract_to_heap(pzip, idx, &size, 0); + if (*buf && bufsize) { + *bufsize = size; + } + return size; +} + +ssize_t zip_entry_noallocread(struct zip_t *zip, void *buf, size_t bufsize) { + mz_zip_archive *pzip = NULL; + + if (!zip) { + // zip_t handler is not initialized + return -1; + } + + pzip = &(zip->archive); + if (pzip->m_zip_mode != MZ_ZIP_MODE_READING || zip->entry.index < 0) { + // the entry is not found or we do not have read access + return -1; + } + + if (!mz_zip_reader_extract_to_mem_no_alloc(pzip, (mz_uint)zip->entry.index, + buf, bufsize, 0, NULL, 0)) { + return -1; + } + + return (ssize_t)zip->entry.uncomp_size; +} + +int zip_entry_fread(struct zip_t *zip, const char *filename) { + mz_zip_archive *pzip = NULL; + mz_uint idx; + mz_uint32 xattr = 0; + mz_zip_archive_file_stat info; + + if (!zip) { + // zip_t handler is not initialized + return -1; + } + + memset((void *)&info, 0, sizeof(mz_zip_archive_file_stat)); + pzip = &(zip->archive); + if (pzip->m_zip_mode != MZ_ZIP_MODE_READING || zip->entry.index < 0) { + // the entry is not found or we do not have read access + return -1; + } + + idx = (mz_uint)zip->entry.index; + if (mz_zip_reader_is_file_a_directory(pzip, idx)) { + // the entry is a directory + return -1; + } + + if (!mz_zip_reader_extract_to_file(pzip, idx, filename, 0)) { + return -1; + } + +#if defined(_MSC_VER) +#else + if (!mz_zip_reader_file_stat(pzip, idx, &info)) { + // Cannot get information about zip archive; + return -1; + } + + xattr = (info.m_external_attr >> 16) & 0xFFFF; + if (xattr > 0) { + if (chmod(filename, (mode_t)xattr) < 0) { + return -1; + } + } +#endif + + return 0; +} + +int zip_entry_extract(struct zip_t *zip, + size_t (*on_extract)(void *arg, unsigned long long offset, + const void *buf, size_t bufsize), + void *arg) { + mz_zip_archive *pzip = NULL; + mz_uint idx; + + if (!zip) { + // zip_t handler is not initialized + return -1; + } + + pzip = &(zip->archive); + if (pzip->m_zip_mode != MZ_ZIP_MODE_READING || zip->entry.index < 0) { + // the entry is not found or we do not have read access + return -1; + } + + idx = (mz_uint)zip->entry.index; + return (mz_zip_reader_extract_to_callback(pzip, idx, on_extract, arg, 0)) + ? 0 + : -1; +} + +int zip_total_entries(struct zip_t *zip) { + if (!zip) { + // zip_t handler is not initialized + return -1; + } + + return (int)zip->archive.m_total_files; +} + +int zip_create(const char *zipname, const char *filenames[], size_t len) { + int status = 0; + size_t i; + mz_zip_archive zip_archive; + struct MZ_FILE_STAT_STRUCT file_stat; + mz_uint32 ext_attributes = 0; + + if (!zipname || strlen(zipname) < 1) { + // zip_t archive name is empty or NULL + return -1; + } + + // Create a new archive. + if (!memset(&(zip_archive), 0, sizeof(zip_archive))) { + // Cannot memset zip archive + return -1; + } + + if (!mz_zip_writer_init_file(&zip_archive, zipname, 0)) { + // Cannot initialize zip_archive writer + return -1; + } + + memset((void *)&file_stat, 0, sizeof(struct MZ_FILE_STAT_STRUCT)); + + for (i = 0; i < len; ++i) { + const char *name = filenames[i]; + if (!name) { + status = -1; + break; + } + + if (MZ_FILE_STAT(name, &file_stat) != 0) { + // problem getting information - check errno + status = -1; + break; + } + + if ((file_stat.st_mode & 0200) == 0) { + // MS-DOS read-only attribute + ext_attributes |= 0x01; + } + ext_attributes |= (mz_uint32)((file_stat.st_mode & 0xFFFF) << 16); + + if (!mz_zip_writer_add_file(&zip_archive, base_name(name), name, "", 0, + ZIP_DEFAULT_COMPRESSION_LEVEL, + ext_attributes)) { + // Cannot add file to zip_archive + status = -1; + break; + } + } + + mz_zip_writer_finalize_archive(&zip_archive); + mz_zip_writer_end(&zip_archive); + return status; +} + +static char *normalize(char *name, char *const nname, size_t len) { + size_t offn = 0; + size_t offnn = 0, ncpy = 0; + + if (name == NULL || nname == NULL || len <= 0) { + return NULL; + } + // skip trailing '/' + while (ISSLASH(*name)) + name++; + + for (; offn < len; offn++) { + if (ISSLASH(name[offn])) { + if (ncpy > 0 && strncmp(&nname[offnn], ".", 1) && + strncmp(&nname[offnn], "..", 2)) { + offnn += ncpy; + nname[offnn++] = name[offn]; // append '/' + } + ncpy = 0; + } else { + nname[offnn + ncpy] = name[offn]; + ncpy++; + } + } + + // at the end, extra check what we've already copied + if (ncpy == 0 || !strncmp(&nname[offnn], ".", 1) || + !strncmp(&nname[offnn], "..", 2)) { + nname[offnn] = 0; + } + return nname; +} + +static int extract(mz_zip_archive *zip_archive, const char *dir, + int (*on_extract)(const char *filename, void *arg), + void *arg) { + int status = -1; + mz_uint i, n; + char path[MAX_PATH + 1]; + char symlink_to[MAX_PATH + 1]; + mz_zip_archive_file_stat info; + size_t dirlen = 0; + mz_uint32 xattr = 0; + + memset(path, 0, sizeof(path)); + memset(symlink_to, 0, sizeof(symlink_to)); + + dirlen = strlen(dir); + if (dirlen + 1 > MAX_PATH) { + return -1; + } + + memset((void *)&info, 0, sizeof(mz_zip_archive_file_stat)); + +#if defined(_MSC_VER) + strcpy_s(path, MAX_PATH, dir); +#else + strcpy(path, dir); +#endif + + if (!ISSLASH(path[dirlen - 1])) { +#if defined(_WIN32) || defined(__WIN32__) + path[dirlen] = '\\'; +#else + path[dirlen] = '/'; +#endif + ++dirlen; + } + + // Get and print information about each file in the archive. + n = mz_zip_reader_get_num_files(zip_archive); + for (i = 0; i < n; ++i) { + if (!mz_zip_reader_file_stat(zip_archive, i, &info)) { + // Cannot get information about zip archive; + goto out; + } + if (!normalize(info.m_filename, info.m_filename, strlen(info.m_filename))) { + // Cannot normalize file name; + goto out; + } +#if defined(_MSC_VER) + strncpy_s(&path[dirlen], MAX_PATH - dirlen, info.m_filename, + MAX_PATH - dirlen); +#else + strncpy(&path[dirlen], info.m_filename, MAX_PATH - dirlen); +#endif + if (mkpath(path) < 0) { + // Cannot make a path + goto out; + } + + if ((((info.m_version_made_by >> 8) == 3) || + ((info.m_version_made_by >> 8) == + 19)) // if zip is produced on Unix or macOS (3 and 19 from + // section 4.4.2.2 of zip standard) + && info.m_external_attr & + (0x20 << 24)) { // and has sym link attribute (0x80 is file, 0x40 + // is directory) +#if defined(_WIN32) || defined(__WIN32__) || defined(_MSC_VER) || \ + defined(__MINGW32__) +#else + if (info.m_uncomp_size > MAX_PATH || + !mz_zip_reader_extract_to_mem_no_alloc(zip_archive, i, symlink_to, + MAX_PATH, 0, NULL, 0)) { + goto out; + } + symlink_to[info.m_uncomp_size] = '\0'; + if (symlink(symlink_to, path) != 0) { + goto out; + } +#endif + } else { + if (!mz_zip_reader_is_file_a_directory(zip_archive, i)) { + if (!mz_zip_reader_extract_to_file(zip_archive, i, path, 0)) { + // Cannot extract zip archive to file + goto out; + } + } + +#if defined(_MSC_VER) +#else + xattr = (info.m_external_attr >> 16) & 0xFFFF; + if (xattr > 0) { + if (chmod(path, (mode_t)xattr) < 0) { + goto out; + } + } +#endif + } + + if (on_extract) { + if (on_extract(path, arg) < 0) { + goto out; + } + } + } + status = 0; + +out: + // Close the archive, freeing any resources it was using + if (!mz_zip_reader_end(zip_archive)) { + // Cannot end zip reader + status = -1; + } + return status; +} + +int zip_extract(const char *zipname, const char *dir, + int (*on_extract)(const char *filename, void *arg), void *arg) { + mz_zip_archive zip_archive; + if (!zipname || !dir) { + // Cannot parse zip archive name + return -1; + } + if (!memset(&zip_archive, 0, sizeof(mz_zip_archive))) { + // Cannot memset zip archive + return MZ_FALSE; + } + // Now try to open the archive. + if (!mz_zip_reader_init_file(&zip_archive, zipname, 0)) { + // Cannot initialize zip_archive reader + return MZ_FALSE; + } + + int status = extract(&zip_archive, dir, on_extract, arg); + + return status; +} + +int zip_extract_without_callback(const char *zipname, const char *dir) { + return zip_extract(zipname, dir, NULL, NULL); +} // for simple V bind ¯\_(ツ)_/¯ + +int zip_extract_stream(const char *stream, size_t size, const char *dir, + int (*on_extract)(const char *filename, void *arg), + void *arg) { + mz_zip_archive zip_archive; + if (!stream || !dir) { + // Cannot parse zip archive stream + return -1; + } + if (!memset(&zip_archive, 0, sizeof(mz_zip_archive))) { + // Cannot memset zip archive + return MZ_FALSE; + } + if (!mz_zip_reader_init_mem(&zip_archive, stream, size, 0)) { + // Cannot initialize zip_archive reader + return MZ_FALSE; + } + + int status = extract(&zip_archive, dir, on_extract, arg); + + return status; +} |