--- /dev/null
+/* miniunz.c
+ Version 1.2.0, September 16th, 2017
+ sample part of the MiniZip project
+
+ Copyright (C) 2012-2017 Nathan Moinvaziri
+ https://github.com/nmoinvaz/minizip
+ Copyright (C) 2009-2010 Mathias Svensson
+ Modifications for Zip64 support
+ http://result42.com
+ Copyright (C) 2007-2008 Even Rouault
+ Modifications of Unzip for Zip64
+ Copyright (C) 1998-2010 Gilles Vollant
+ http://www.winimage.com/zLibDll/minizip.html
+
+ This program is distributed under the terms of the same license as zlib.
+ See the accompanying LICENSE file for the full text of the license.
+*/
+
+#if defined(__linux__)
+// Linux needs this to support file operation on files larger then 4+GB
+# ifndef __USE_FILE_OFFSET64
+# define __USE_FILE_OFFSET64
+# endif
+# ifndef __USE_LARGEFILE64
+# define __USE_LARGEFILE64
+# endif
+# ifndef _LARGEFILE64_SOURCE
+# define _LARGEFILE64_SOURCE
+# endif
+# ifndef _FILE_OFFSET_BIT
+# define _FILE_OFFSET_BIT 64
+# endif
+#endif
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <errno.h>
+#include <fcntl.h>
+
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "zlib.h"
+#include "ioapi.h"
+
+#ifdef _WIN32
+# include <direct.h>
+# include <io.h>
+#else
+# include <utime.h>
+#endif
+
+#include "unzip.h"
+
+#ifdef _WIN32
+# define USEWIN32IOAPI
+# include "iowin32.h"
+#endif
+
+#include "miniunz.h"
+
+#ifdef _WIN32
+# define MKDIR(d) _mkdir(d)
+# define CHDIR(d) _chdir(d)
+#else
+# define MKDIR(d) mkdir(d, 0775)
+# define CHDIR(d) chdir(d)
+#endif
+
+
+#define DEBUG_PRINTF 0
+#define debug_printf(...) \
+ do { if (DEBUG_PRINTF) fprintf(stderr, __VA_ARGS__); } while (0)
+
+
+static char **zip_entries = NULL;
+static int num_zip_entries = 0;
+static int max_zip_entries = 0;
+static const int max_alloc_zip_entries = 256;
+
+static void add_zip_entry(const char *s)
+{
+ if (zip_entries == NULL)
+ {
+ max_zip_entries = max_alloc_zip_entries;
+
+ zip_entries = malloc(max_zip_entries * sizeof(char *));
+
+ if (zip_entries == NULL)
+ exit(1);
+
+ num_zip_entries = 0;
+ }
+
+ if (num_zip_entries >= max_zip_entries - 1)
+ {
+ max_zip_entries += max_alloc_zip_entries;
+
+ zip_entries = realloc(zip_entries, max_zip_entries * sizeof(char *));
+
+ if (zip_entries == NULL)
+ exit(1);
+ }
+
+ zip_entries[num_zip_entries++] = strdup(s);
+ zip_entries[num_zip_entries] = NULL; // ensure NULL terminated list
+}
+
+static void free_zip_entries(void)
+{
+ if (zip_entries == NULL)
+ return;
+
+ int i;
+
+ for (i = 0; i < num_zip_entries; i++)
+ free(zip_entries[i]);
+
+ num_zip_entries = 0;
+ max_zip_entries = 0;
+
+ free(zip_entries);
+
+ zip_entries = NULL;
+}
+
+static int invalid_date(const struct tm *ptm)
+{
+#define datevalue_in_range(min, max, value) ((min) <= (value) && (value) <= (max))
+ return (!datevalue_in_range(0, 207, ptm->tm_year) ||
+ !datevalue_in_range(0, 11, ptm->tm_mon) ||
+ !datevalue_in_range(1, 31, ptm->tm_mday) ||
+ !datevalue_in_range(0, 23, ptm->tm_hour) ||
+ !datevalue_in_range(0, 59, ptm->tm_min) ||
+ !datevalue_in_range(0, 59, ptm->tm_sec));
+#undef datevalue_in_range
+}
+
+// Conversion without validation
+static void dosdate_to_raw_tm(uint64_t dos_date, struct tm *ptm)
+{
+ uint64_t date = (uint64_t)(dos_date >> 16);
+
+ ptm->tm_mday = (uint16_t)(date & 0x1f);
+ ptm->tm_mon = (uint16_t)(((date & 0x1E0) / 0x20) - 1);
+ ptm->tm_year = (uint16_t)(((date & 0x0FE00) / 0x0200) + 80);
+ ptm->tm_hour = (uint16_t)((dos_date & 0xF800) / 0x800);
+ ptm->tm_min = (uint16_t)((dos_date & 0x7E0) / 0x20);
+ ptm->tm_sec = (uint16_t)(2 * (dos_date & 0x1f));
+ ptm->tm_isdst = -1;
+}
+
+static int dosdate_to_tm(uint64_t dos_date, struct tm *ptm)
+{
+ dosdate_to_raw_tm(dos_date, ptm);
+
+ if (invalid_date(ptm))
+ {
+ // Invalid date stored, so don't return it.
+ memset(ptm, 0, sizeof(struct tm));
+ return -1;
+ }
+ return 0;
+}
+
+#ifndef _WIN32
+static time_t dosdate_to_time_t(uint64_t dos_date)
+{
+ struct tm ptm;
+ dosdate_to_raw_tm(dos_date, &ptm);
+ return mktime(&ptm);
+}
+#endif
+
+static void change_file_date(const char *path, uint32_t dos_date)
+{
+#ifdef _WIN32
+ HANDLE handle = NULL;
+ FILETIME ftm, ftm_local, ftm_create, ftm_access, ftm_modified;
+
+ handle = CreateFileA(path, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
+ if (handle != INVALID_HANDLE_VALUE)
+ {
+ GetFileTime(handle, &ftm_create, &ftm_access, &ftm_modified);
+ DosDateTimeToFileTime((WORD)(dos_date >> 16), (WORD)dos_date, &ftm_local);
+ LocalFileTimeToFileTime(&ftm_local, &ftm);
+ SetFileTime(handle, &ftm, &ftm_access, &ftm);
+ CloseHandle(handle);
+ }
+#else
+ struct utimbuf ut;
+ ut.actime = ut.modtime = dosdate_to_time_t(dos_date);
+ utime(path, &ut);
+#endif
+}
+
+static int makedir(const char *newdir)
+{
+ char *buffer = NULL;
+ char *p = NULL;
+ int len = (int)strlen(newdir);
+
+ if (len <= 0)
+ return 0;
+
+ buffer = (char*)malloc(len + 1);
+ if (buffer == NULL)
+ {
+ debug_printf("Error allocating memory\n");
+ return -1;
+ }
+
+ strcpy(buffer, newdir);
+
+ if (buffer[len - 1] == '/')
+ buffer[len - 1] = 0;
+
+ if (MKDIR(buffer) == 0)
+ {
+ free(buffer);
+ return 1;
+ }
+
+ p = buffer + 1;
+ while (1)
+ {
+ char hold;
+ while (*p && *p != '\\' && *p != '/')
+ p++;
+ hold = *p;
+ *p = 0;
+
+ if ((MKDIR(buffer) == -1) && (errno == ENOENT))
+ {
+ debug_printf("couldn't create directory %s (%d)\n", buffer, errno);
+ free(buffer);
+ return 0;
+ }
+
+ if (hold == 0)
+ break;
+
+ *p++ = hold;
+ }
+
+ free(buffer);
+ return 1;
+}
+
+static FILE *get_file_handle(const char *path)
+{
+ FILE *handle = NULL;
+#if defined(WIN32)
+ wchar_t *pathWide = NULL;
+ int pathLength = 0;
+
+ pathLength = MultiByteToWideChar(CP_UTF8, 0, path, -1, NULL, 0) + 1;
+ pathWide = (wchar_t*)calloc(pathLength, sizeof(wchar_t));
+ MultiByteToWideChar(CP_UTF8, 0, path, -1, pathWide, pathLength);
+ handle = _wfopen((const wchar_t*)pathWide, L"rb");
+ free(pathWide);
+#else
+ handle = fopen64(path, "rb");
+#endif
+
+ return handle;
+}
+
+static int check_file_exists(const char *path)
+{
+ FILE *handle = get_file_handle(path);
+ if (handle == NULL)
+ return 0;
+ fclose(handle);
+ return 1;
+}
+
+static void display_zpos64(uint64_t n, int size_char)
+{
+ /* To avoid compatibility problem we do here the conversion */
+ char number[21] = { 0 };
+ int offset = 19;
+ int pos_string = 19;
+ int size_display_string = 19;
+
+ while (1)
+ {
+ number[offset] = (char)((n % 10) + '0');
+ if (number[offset] != '0')
+ pos_string = offset;
+ n /= 10;
+ if (offset == 0)
+ break;
+ offset--;
+ }
+
+ size_display_string -= pos_string;
+ while (size_char-- > size_display_string)
+ debug_printf(" ");
+ debug_printf("%s", &number[pos_string]);
+}
+
+static int miniunz_list(unzFile uf)
+{
+ free_zip_entries();
+
+ int err = unzGoToFirstFile(uf);
+ if (err != UNZ_OK)
+ {
+ debug_printf("error %d with zipfile in unzGoToFirstFile\n", err);
+ return 1;
+ }
+
+ debug_printf(" Length Method Size Ratio Date Time CRC-32 Name\n");
+ debug_printf(" ------ ------ ---- ----- ---- ---- ------ ----\n");
+
+ do
+ {
+ char filename_inzip[256] = {0};
+ unz_file_info64 file_info = {0};
+ uint32_t ratio = 0;
+ struct tm tmu_date = { 0 };
+ const char *string_method = NULL;
+ char char_crypt = ' ';
+
+ err = unzGetCurrentFileInfo64(uf, &file_info, filename_inzip, sizeof(filename_inzip), NULL, 0, NULL, 0);
+ if (err != UNZ_OK)
+ {
+ debug_printf("error %d with zipfile in unzGetCurrentFileInfo\n", err);
+ break;
+ }
+
+ add_zip_entry(filename_inzip);
+
+ if (file_info.uncompressed_size > 0)
+ ratio = (uint32_t)((file_info.compressed_size * 100) / file_info.uncompressed_size);
+
+ /* Display a '*' if the file is encrypted */
+ if ((file_info.flag & 1) != 0)
+ char_crypt = '*';
+
+ if (file_info.compression_method == 0)
+ string_method = "Stored";
+ else if (file_info.compression_method == Z_DEFLATED)
+ {
+ uint16_t level = (uint16_t)((file_info.flag & 0x6) / 2);
+ if (level == 0)
+ string_method = "Defl:N";
+ else if (level == 1)
+ string_method = "Defl:X";
+ else if ((level == 2) || (level == 3))
+ string_method = "Defl:F"; /* 2:fast , 3 : extra fast*/
+ else
+ string_method = "Unkn. ";
+ }
+ else if (file_info.compression_method == Z_BZIP2ED)
+ {
+ string_method = "BZip2 ";
+ }
+ else
+ string_method = "Unkn. ";
+
+ display_zpos64(file_info.uncompressed_size, 7);
+ debug_printf(" %6s%c", string_method, char_crypt);
+ display_zpos64(file_info.compressed_size, 7);
+
+ dosdate_to_tm(file_info.dos_date, &tmu_date);
+ debug_printf(" %3u%% %2.2u-%2.2u-%2.2u %2.2u:%2.2u %8.8x %s\n", ratio,
+ (uint32_t)tmu_date.tm_mon + 1, (uint32_t)tmu_date.tm_mday,
+ (uint32_t)tmu_date.tm_year % 100,
+ (uint32_t)tmu_date.tm_hour, (uint32_t)tmu_date.tm_min,
+ file_info.crc, filename_inzip);
+
+ err = unzGoToNextFile(uf);
+ }
+ while (err == UNZ_OK);
+
+ if (err != UNZ_END_OF_LIST_OF_FILE && err != UNZ_OK)
+ {
+ debug_printf("error %d with zipfile in unzGoToNextFile\n", err);
+ return err;
+ }
+
+ return 0;
+}
+
+static int miniunz_extract_currentfile(unzFile uf, int opt_extract_without_path, int *popt_overwrite, const char *password)
+{
+ unz_file_info64 file_info = {0};
+ FILE* fout = NULL;
+ void* buf = NULL;
+ uint16_t size_buf = 8192;
+ int err = UNZ_OK;
+ int errclose = UNZ_OK;
+ int skip = 0;
+ char filename_inzip[256] = {0};
+ char *filename_withoutpath = NULL;
+ const char *write_filename = NULL;
+ char *p = NULL;
+
+ err = unzGetCurrentFileInfo64(uf, &file_info, filename_inzip, sizeof(filename_inzip), NULL, 0, NULL, 0);
+ if (err != UNZ_OK)
+ {
+ debug_printf("error %d with zipfile in unzGetCurrentFileInfo\n",err);
+ return err;
+ }
+
+ add_zip_entry(filename_inzip);
+
+ p = filename_withoutpath = filename_inzip;
+ while (*p != 0)
+ {
+ if ((*p == '/') || (*p == '\\'))
+ filename_withoutpath = p+1;
+ p++;
+ }
+
+ /* If zip entry is a directory then create it on disk */
+ if (*filename_withoutpath == 0)
+ {
+ if (opt_extract_without_path == 0)
+ {
+ debug_printf("creating directory: %s\n", filename_inzip);
+ MKDIR(filename_inzip);
+ }
+ return err;
+ }
+
+ buf = (void*)malloc(size_buf);
+ if (buf == NULL)
+ {
+ debug_printf("Error allocating memory\n");
+ return UNZ_INTERNALERROR;
+ }
+
+ err = unzOpenCurrentFilePassword(uf, password);
+ if (err != UNZ_OK)
+ debug_printf("error %d with zipfile in unzOpenCurrentFilePassword\n", err);
+
+ if (opt_extract_without_path)
+ write_filename = filename_withoutpath;
+ else
+ write_filename = filename_inzip;
+
+ /* Determine if the file should be overwritten or not and ask the user if needed */
+ if ((err == UNZ_OK) && (*popt_overwrite == 0) && (check_file_exists(write_filename)))
+ {
+ char rep = 0;
+ do
+ {
+ char answer[128];
+ debug_printf("The file %s exists. Overwrite ? [y]es, [n]o, [A]ll: ", write_filename);
+ if (scanf("%1s", answer) != 1)
+ exit(EXIT_FAILURE);
+ rep = answer[0];
+ if ((rep >= 'a') && (rep <= 'z'))
+ rep -= 0x20;
+ }
+ while ((rep != 'Y') && (rep != 'N') && (rep != 'A'));
+
+ if (rep == 'N')
+ skip = 1;
+ if (rep == 'A')
+ *popt_overwrite = 1;
+ }
+
+ /* Create the file on disk so we can unzip to it */
+ if ((skip == 0) && (err == UNZ_OK))
+ {
+ fout = fopen64(write_filename, "wb");
+ /* Some zips don't contain directory alone before file */
+ if ((fout == NULL) && (opt_extract_without_path == 0) &&
+ (filename_withoutpath != (char*)filename_inzip))
+ {
+ char c = *(filename_withoutpath-1);
+ *(filename_withoutpath-1) = 0;
+ makedir(write_filename);
+ *(filename_withoutpath-1) = c;
+ fout = fopen64(write_filename, "wb");
+ }
+ if (fout == NULL)
+ debug_printf("error opening %s\n", write_filename);
+ }
+
+ /* Read from the zip, unzip to buffer, and write to disk */
+ if (fout != NULL)
+ {
+ debug_printf(" extracting: %s\n", write_filename);
+
+ do
+ {
+ err = unzReadCurrentFile(uf, buf, size_buf);
+ if (err < 0)
+ {
+ debug_printf("error %d with zipfile in unzReadCurrentFile\n", err);
+ break;
+ }
+ if (err == 0)
+ break;
+ if (fwrite(buf, err, 1, fout) != 1)
+ {
+ debug_printf("error %d in writing extracted file\n", errno);
+ err = UNZ_ERRNO;
+ break;
+ }
+ }
+ while (err > 0);
+
+ if (fout)
+ fclose(fout);
+
+ /* Set the time of the file that has been unzipped */
+ if (err == 0)
+ change_file_date(write_filename, file_info.dos_date);
+ }
+
+ errclose = unzCloseCurrentFile(uf);
+ if (errclose != UNZ_OK)
+ debug_printf("error %d with zipfile in unzCloseCurrentFile\n", errclose);
+
+ free(buf);
+ return err;
+}
+
+static int miniunz_extract_all(unzFile uf, int opt_extract_without_path, int opt_overwrite, const char *password)
+{
+ free_zip_entries();
+
+ int err = unzGoToFirstFile(uf);
+ if (err != UNZ_OK)
+ {
+ debug_printf("error %d with zipfile in unzGoToFirstFile\n", err);
+ return 1;
+ }
+
+ do
+ {
+ err = miniunz_extract_currentfile(uf, opt_extract_without_path, &opt_overwrite, password);
+ if (err != UNZ_OK)
+ break;
+ err = unzGoToNextFile(uf);
+ }
+ while (err == UNZ_OK);
+
+ if (err != UNZ_END_OF_LIST_OF_FILE)
+ {
+ debug_printf("error %d with zipfile in unzGoToNextFile\n", err);
+ return 1;
+ }
+ return 0;
+}
+
+char **zip_list(char *filename)
+{
+ if (filename == NULL)
+ {
+ debug_printf("No filename specified!\n");
+
+ return NULL;
+ }
+
+#ifdef USEWIN32IOAPI
+ zlib_filefunc64_def ffunc;
+ fill_win32_filefunc64A(&ffunc);
+ unzFile uf = unzOpen2_64(filename, &ffunc);
+#else
+ unzFile uf = unzOpen64(filename);
+#endif
+
+ if (uf == NULL)
+ {
+ debug_printf("Cannot open file '%s'!\n", filename);
+
+ return NULL;
+ }
+
+ debug_printf("File '%s' opened.\n", filename);
+
+ int success = (miniunz_list(uf) == UNZ_OK);
+
+ unzClose(uf);
+
+ if (!success)
+ return NULL;
+
+ return zip_entries;
+}
+
+char **zip_extract(char *filename, char *directory)
+{
+ if (filename == NULL)
+ {
+ debug_printf("No zip filename specified!\n");
+
+ return NULL;
+ }
+
+ if (directory == NULL)
+ {
+ debug_printf("No target directory specified!\n");
+
+ return NULL;
+ }
+
+ struct stat file_status;
+
+ if (stat(directory, &file_status) != 0 || !S_ISDIR(file_status.st_mode))
+ {
+ debug_printf("Directory '%s' does not exist!\n", directory);
+
+ return NULL;
+ }
+
+#ifdef USEWIN32IOAPI
+ zlib_filefunc64_def ffunc;
+ fill_win32_filefunc64A(&ffunc);
+ unzFile uf = unzOpen2_64(filename, &ffunc);
+#else
+ unzFile uf = unzOpen64(filename);
+#endif
+
+ if (uf == NULL)
+ {
+ debug_printf("Cannot open file '%s'!\n", filename);
+
+ return NULL;
+ }
+
+ debug_printf("File '%s' opened.\n", filename);
+
+ int max_directory_size = 1024;
+ char last_directory[max_directory_size];
+
+ if (getcwd(last_directory, max_directory_size) == NULL)
+ {
+ debug_printf("Cannot get current directory!\n");
+
+ unzClose(uf);
+
+ return NULL;
+ }
+
+ if (CHDIR(directory)) // change to target directory
+ {
+ debug_printf("Cannot change to directory '%s'!\n", directory);
+
+ unzClose(uf);
+
+ return NULL;
+ }
+
+ int success = (miniunz_extract_all(uf, 0, 1, NULL) == UNZ_OK);
+
+ CHDIR(last_directory); // change back to previous directory
+
+ unzClose(uf);
+
+ if (!success)
+ return NULL;
+
+ return zip_entries;
+}
projects / rocksndiamonds.git / blobdiff