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368 lines
8.7 KiB
C
368 lines
8.7 KiB
C
/* mz_os_posix.c -- System functions for posix
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part of the minizip-ng project
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Copyright (C) 2010-2021 Nathan Moinvaziri
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https://github.com/zlib-ng/minizip-ng
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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 "mz.h"
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#include "mz_strm.h"
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#include "mz_os.h"
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#include <stdio.h> /* rename */
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#include <errno.h>
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#if defined(HAVE_ICONV)
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#include <iconv.h>
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#endif
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#include <sys/types.h>
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#include <sys/stat.h>
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#ifndef _WIN32
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# include <utime.h>
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# include <unistd.h>
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#endif
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#if defined(__APPLE__)
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# include <mach/clock.h>
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# include <mach/mach.h>
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#endif
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#if defined(HAVE_GETRANDOM)
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# include <sys/random.h>
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#endif
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#if defined(HAVE_LIBBSD)
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# include <sys/types.h>
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# ifndef __u_char_defined
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typedef unsigned char u_char;
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# endif
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# include <bsd/stdlib.h> /* arc4random_buf */
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#endif
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/***************************************************************************/
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#if defined(HAVE_ICONV)
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uint8_t *mz_os_utf8_string_create(const char *string, int32_t encoding) {
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iconv_t cd;
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const char *from_encoding = NULL;
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size_t result = 0;
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size_t string_length = 0;
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size_t string_utf8_size = 0;
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uint8_t *string_utf8 = NULL;
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uint8_t *string_utf8_ptr = NULL;
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if (string == NULL)
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return NULL;
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if (encoding == MZ_ENCODING_CODEPAGE_437)
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from_encoding = "CP437";
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else if (encoding == MZ_ENCODING_CODEPAGE_932)
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from_encoding = "CP932";
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else if (encoding == MZ_ENCODING_CODEPAGE_936)
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from_encoding = "CP936";
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else if (encoding == MZ_ENCODING_CODEPAGE_950)
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from_encoding = "CP950";
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else if (encoding == MZ_ENCODING_UTF8)
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from_encoding = "UTF-8";
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else
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return NULL;
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cd = iconv_open("UTF-8", from_encoding);
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if (cd == (iconv_t)-1)
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return NULL;
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string_length = strlen(string);
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string_utf8_size = string_length * 2;
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string_utf8 = (uint8_t *)MZ_ALLOC((int32_t)(string_utf8_size + 1));
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string_utf8_ptr = string_utf8;
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if (string_utf8) {
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memset(string_utf8, 0, string_utf8_size + 1);
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result = iconv(cd, (char **)&string, &string_length,
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(char **)&string_utf8_ptr, &string_utf8_size);
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}
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iconv_close(cd);
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if (result == (size_t)-1) {
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MZ_FREE(string_utf8);
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string_utf8 = NULL;
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}
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return string_utf8;
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}
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#else
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uint8_t *mz_os_utf8_string_create(const char *string, int32_t encoding) {
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size_t string_length = 0;
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uint8_t *string_copy = NULL;
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string_length = strlen(string);
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string_copy = (uint8_t *)MZ_ALLOC((int32_t)(string_length + 1));
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strncpy((char *)string_copy, string, string_length);
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string_copy[string_length] = 0;
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return string_copy;
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}
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#endif
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void mz_os_utf8_string_delete(uint8_t **string) {
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if (string != NULL) {
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MZ_FREE(*string);
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*string = NULL;
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}
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}
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/***************************************************************************/
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#if defined(HAVE_ARC4RANDOM_BUF)
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int32_t mz_os_rand(uint8_t *buf, int32_t size) {
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if (size < 0)
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return 0;
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arc4random_buf(buf, (uint32_t)size);
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return size;
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}
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#elif defined(HAVE_ARC4RANDOM)
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int32_t mz_os_rand(uint8_t *buf, int32_t size) {
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int32_t left = size;
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for (; left > 2; left -= 3, buf += 3) {
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uint32_t val = arc4random();
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buf[0] = (val) & 0xFF;
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buf[1] = (val >> 8) & 0xFF;
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buf[2] = (val >> 16) & 0xFF;
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}
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for (; left > 0; left--, buf++) {
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*buf = arc4random() & 0xFF;
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}
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return size - left;
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}
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#elif defined(HAVE_GETRANDOM)
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int32_t mz_os_rand(uint8_t *buf, int32_t size) {
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int32_t left = size;
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int32_t written = 0;
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while (left > 0) {
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written = getrandom(buf, left, 0);
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if (written < 0)
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return MZ_INTERNAL_ERROR;
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buf += written;
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left -= written;
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}
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return size - left;
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}
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#else
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int32_t mz_os_rand(uint8_t *buf, int32_t size) {
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static unsigned calls = 0;
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int32_t i = 0;
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/* Ensure different random header each time */
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if (++calls == 1) {
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#define PI_SEED 3141592654UL
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srand((unsigned)(time(NULL) ^ PI_SEED));
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}
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while (i < size)
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buf[i++] = (rand() >> 7) & 0xff;
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return size;
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}
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#endif
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int32_t mz_os_rename(const char *source_path, const char *target_path) {
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if (rename(source_path, target_path) == -1)
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return MZ_EXIST_ERROR;
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return MZ_OK;
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}
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int32_t mz_os_unlink(const char *path) {
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if (unlink(path) == -1)
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return MZ_EXIST_ERROR;
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return MZ_OK;
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}
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int32_t mz_os_file_exists(const char *path) {
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struct stat path_stat;
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memset(&path_stat, 0, sizeof(path_stat));
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if (stat(path, &path_stat) == 0)
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return MZ_OK;
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return MZ_EXIST_ERROR;
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}
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int64_t mz_os_get_file_size(const char *path) {
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struct stat path_stat;
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memset(&path_stat, 0, sizeof(path_stat));
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if (stat(path, &path_stat) == 0) {
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/* Stat returns size taken up by directory entry, so return 0 */
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if (S_ISDIR(path_stat.st_mode))
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return 0;
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return path_stat.st_size;
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}
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return 0;
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}
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int32_t mz_os_get_file_date(const char *path, time_t *modified_date, time_t *accessed_date, time_t *creation_date) {
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struct stat path_stat;
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char *name = NULL;
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size_t len = 0;
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int32_t err = MZ_INTERNAL_ERROR;
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memset(&path_stat, 0, sizeof(path_stat));
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if (strcmp(path, "-") != 0) {
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/* Not all systems allow stat'ing a file with / appended */
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len = strlen(path);
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name = (char *)malloc(len + 1);
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strncpy(name, path, len + 1);
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mz_path_remove_slash(name);
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if (stat(name, &path_stat) == 0) {
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if (modified_date != NULL)
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*modified_date = path_stat.st_mtime;
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if (accessed_date != NULL)
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*accessed_date = path_stat.st_atime;
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/* Creation date not supported */
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if (creation_date != NULL)
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*creation_date = 0;
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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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return err;
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}
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int32_t mz_os_set_file_date(const char *path, time_t modified_date, time_t accessed_date, time_t creation_date) {
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struct utimbuf ut;
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ut.actime = accessed_date;
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ut.modtime = modified_date;
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/* Creation date not supported */
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MZ_UNUSED(creation_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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int32_t mz_os_get_file_attribs(const char *path, uint32_t *attributes) {
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struct stat path_stat;
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int32_t err = MZ_OK;
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memset(&path_stat, 0, sizeof(path_stat));
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if (lstat(path, &path_stat) == -1)
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err = MZ_INTERNAL_ERROR;
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*attributes = path_stat.st_mode;
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return err;
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}
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int32_t mz_os_set_file_attribs(const char *path, uint32_t attributes) {
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int32_t err = MZ_OK;
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if (chmod(path, (mode_t)attributes) == -1)
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err = MZ_INTERNAL_ERROR;
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return err;
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}
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int32_t mz_os_make_dir(const char *path) {
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int32_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_os_open_dir(const char *path) {
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return opendir(path);
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}
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struct dirent* mz_os_read_dir(DIR *dir) {
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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_os_close_dir(DIR *dir) {
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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_os_is_dir(const char *path) {
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struct stat path_stat;
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memset(&path_stat, 0, sizeof(path_stat));
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stat(path, &path_stat);
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if (S_ISDIR(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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int32_t mz_os_is_symlink(const char *path) {
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struct stat path_stat;
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memset(&path_stat, 0, sizeof(path_stat));
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lstat(path, &path_stat);
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if (S_ISLNK(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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int32_t mz_os_make_symlink(const char *path, const char *target_path) {
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if (symlink(target_path, 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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int32_t mz_os_read_symlink(const char *path, char *target_path, int32_t max_target_path) {
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size_t length = 0;
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length = (size_t)readlink(path, target_path, max_target_path - 1);
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if (length == (size_t)-1)
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return MZ_EXIST_ERROR;
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target_path[length] = 0;
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return MZ_OK;
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}
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uint64_t mz_os_ms_time(void) {
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struct timespec ts;
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#if defined(__APPLE__)
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clock_serv_t cclock;
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mach_timespec_t mts;
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host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
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clock_get_time(cclock, &mts);
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mach_port_deallocate(mach_task_self(), cclock);
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ts.tv_sec = mts.tv_sec;
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ts.tv_nsec = mts.tv_nsec;
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#else
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clock_gettime(CLOCK_MONOTONIC, &ts);
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#endif
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return ((uint64_t)ts.tv_sec * 1000) + ((uint64_t)ts.tv_nsec / 1000000);
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}
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