Antoine Cœur
165 lines
3.6 KiB
C
165 lines
3.6 KiB
C
/* mz_os_posix.c -- System functions for posix
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Version 2.0.0, October 4th, 2017
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part of the MiniZip project
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Copyright (C) 2012-2017 Nathan Moinvaziri
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https://github.com/nmoinvaz/minizip
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This program is distributed under the terms of the same license as zlib.
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See the accompanying LICENSE file for the full text of the license.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#if defined unix || defined __APPLE__
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# include <unistd.h>
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# include <utime.h>
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# include <fcntl.h>
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#endif
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#include "mz_error.h"
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#include "mz_strm.h"
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#include "mz_os.h"
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#include "mz_os_posix.h"
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/***************************************************************************/
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#ifndef ZCR_SEED2
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# define ZCR_SEED2 3141592654UL // use PI as default pattern
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#endif
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/***************************************************************************/
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int32_t mz_posix_rand(uint8_t *buf, int32_t size)
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{
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static unsigned calls = 0;
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void *rand_stream = NULL;
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int32_t len = 0;
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if (mz_stream_posix_create(&rand_stream) == NULL)
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return 0;
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if (mz_stream_posix_open(rand_stream, "/dev/urandom", MZ_STREAM_MODE_READ) == MZ_OK)
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{
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len = mz_stream_posix_read(rand_stream, buf, size);
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mz_stream_posix_close(rand_stream);
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}
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mz_stream_posix_delete(&rand_stream);
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if (len < (int)size)
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{
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// Ensure different random header each time
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if (++calls == 1)
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srand((unsigned)(time(NULL) ^ ZCR_SEED2));
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while (len < (int)size)
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buf[len++] = (rand() >> 7) & 0xff;
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}
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return len;
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}
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int16_t mz_posix_get_file_date(const char *path, uint32_t *dos_date)
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{
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struct stat stat_info;
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struct tm *filedate = NULL;
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time_t tm_t = 0;
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int16_t err = MZ_INTERNAL_ERROR;
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memset(&stat_info, 0, sizeof(stat_info));
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if (strcmp(path, "-") != 0)
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{
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size_t len = strlen(path);
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char *name = (char *)malloc(len + 1);
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strncpy(name, path, len + 1);
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name[len] = 0;
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if (name[len - 1] == '/')
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name[len - 1] = 0;
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/* Not all systems allow stat'ing a file with / appended */
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if (stat(name, &stat_info) == 0)
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{
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tm_t = stat_info.st_mtime;
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err = MZ_OK;
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}
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free(name);
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}
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filedate = localtime(&tm_t);
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*dos_date = mz_tm_to_dosdate(filedate);
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return err;
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}
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int16_t mz_posix_set_file_date(const char *path, uint32_t dos_date)
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{
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struct utimbuf ut;
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ut.actime = mz_dosdate_to_time_t(dos_date);
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ut.modtime = mz_dosdate_to_time_t(dos_date);
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if (utime(path, &ut) != 0)
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return MZ_INTERNAL_ERROR;
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return MZ_OK;
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}
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int16_t mz_posix_change_dir(const char *path)
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{
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if (chdir(path) != 0)
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return MZ_INTERNAL_ERROR;
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return MZ_OK;
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}
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int16_t mz_posix_make_dir(const char *path)
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{
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int16_t err = 0;
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err = mkdir(path, 0755);
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if (err != 0 && errno != EEXIST)
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return MZ_INTERNAL_ERROR;
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return MZ_OK;
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}
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DIR* mz_posix_open_dir(const char *path)
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{
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return opendir(path);
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}
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struct dirent* mz_posix_read_dir(DIR *dir)
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{
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if (dir == NULL)
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return NULL;
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return readdir(dir);
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}
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int32_t mz_posix_close_dir(DIR *dir)
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{
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if (dir == NULL)
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return MZ_PARAM_ERROR;
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if (closedir(dir) == -1)
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return MZ_INTERNAL_ERROR;
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return MZ_OK;
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}
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int32_t mz_posix_is_dir(const char *path)
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{
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struct stat path_stat;
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stat(path, &path_stat);
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if (S_ISREG(path_stat.st_mode))
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return MZ_OK;
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return MZ_EXIST_ERROR;
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}
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