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dolphin/Externals/minizip/mz_os_posix.c

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/* mz_os_posix.c -- System functions for posix
part of the minizip-ng project
Copyright (C) 2010-2021 Nathan Moinvaziri
https://github.com/zlib-ng/minizip-ng
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.
*/
#include "mz.h"
#include "mz_strm.h"
#include "mz_os.h"
#include <stdio.h> /* rename */
#include <errno.h>
#if defined(HAVE_ICONV)
#include <iconv.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#ifndef _WIN32
# include <utime.h>
# include <unistd.h>
#endif
#if defined(__APPLE__)
# include <mach/clock.h>
# include <mach/mach.h>
#endif
#if defined(HAVE_GETRANDOM)
# include <sys/random.h>
#endif
#if defined(HAVE_LIBBSD)
# include <sys/types.h>
# ifndef __u_char_defined
typedef unsigned char u_char;
# endif
# include <bsd/stdlib.h> /* arc4random_buf */
#endif
/***************************************************************************/
#if defined(HAVE_ICONV)
uint8_t *mz_os_utf8_string_create(const char *string, int32_t encoding) {
iconv_t cd;
const char *from_encoding = NULL;
size_t result = 0;
size_t string_length = 0;
size_t string_utf8_size = 0;
uint8_t *string_utf8 = NULL;
uint8_t *string_utf8_ptr = NULL;
if (string == NULL)
return NULL;
if (encoding == MZ_ENCODING_CODEPAGE_437)
from_encoding = "CP437";
else if (encoding == MZ_ENCODING_CODEPAGE_932)
from_encoding = "CP932";
else if (encoding == MZ_ENCODING_CODEPAGE_936)
from_encoding = "CP936";
else if (encoding == MZ_ENCODING_CODEPAGE_950)
from_encoding = "CP950";
else if (encoding == MZ_ENCODING_UTF8)
from_encoding = "UTF-8";
else
return NULL;
cd = iconv_open("UTF-8", from_encoding);
if (cd == (iconv_t)-1)
return NULL;
string_length = strlen(string);
string_utf8_size = string_length * 2;
string_utf8 = (uint8_t *)MZ_ALLOC((int32_t)(string_utf8_size + 1));
string_utf8_ptr = string_utf8;
if (string_utf8) {
memset(string_utf8, 0, string_utf8_size + 1);
result = iconv(cd, (char **)&string, &string_length,
(char **)&string_utf8_ptr, &string_utf8_size);
}
iconv_close(cd);
if (result == (size_t)-1) {
MZ_FREE(string_utf8);
string_utf8 = NULL;
}
return string_utf8;
}
#else
uint8_t *mz_os_utf8_string_create(const char *string, int32_t encoding) {
size_t string_length = 0;
uint8_t *string_copy = NULL;
string_length = strlen(string);
string_copy = (uint8_t *)MZ_ALLOC((int32_t)(string_length + 1));
strncpy((char *)string_copy, string, string_length);
string_copy[string_length] = 0;
return string_copy;
}
#endif
void mz_os_utf8_string_delete(uint8_t **string) {
if (string != NULL) {
MZ_FREE(*string);
*string = NULL;
}
}
/***************************************************************************/
#if defined(HAVE_ARC4RANDOM_BUF)
int32_t mz_os_rand(uint8_t *buf, int32_t size) {
if (size < 0)
return 0;
arc4random_buf(buf, (uint32_t)size);
return size;
}
#elif defined(HAVE_ARC4RANDOM)
int32_t mz_os_rand(uint8_t *buf, int32_t size) {
int32_t left = size;
for (; left > 2; left -= 3, buf += 3) {
uint32_t val = arc4random();
buf[0] = (val) & 0xFF;
buf[1] = (val >> 8) & 0xFF;
buf[2] = (val >> 16) & 0xFF;
}
for (; left > 0; left--, buf++) {
*buf = arc4random() & 0xFF;
}
return size - left;
}
#elif defined(HAVE_GETRANDOM)
int32_t mz_os_rand(uint8_t *buf, int32_t size) {
int32_t left = size;
int32_t written = 0;
while (left > 0) {
written = getrandom(buf, left, 0);
if (written < 0)
return MZ_INTERNAL_ERROR;
buf += written;
left -= written;
}
return size - left;
}
#else
int32_t mz_os_rand(uint8_t *buf, int32_t size) {
static unsigned calls = 0;
int32_t i = 0;
/* Ensure different random header each time */
if (++calls == 1) {
#define PI_SEED 3141592654UL
srand((unsigned)(time(NULL) ^ PI_SEED));
}
while (i < size)
buf[i++] = (rand() >> 7) & 0xff;
return size;
}
#endif
int32_t mz_os_rename(const char *source_path, const char *target_path) {
if (rename(source_path, target_path) == -1)
return MZ_EXIST_ERROR;
return MZ_OK;
}
int32_t mz_os_unlink(const char *path) {
if (unlink(path) == -1)
return MZ_EXIST_ERROR;
return MZ_OK;
}
int32_t mz_os_file_exists(const char *path) {
struct stat path_stat;
memset(&path_stat, 0, sizeof(path_stat));
if (stat(path, &path_stat) == 0)
return MZ_OK;
return MZ_EXIST_ERROR;
}
int64_t mz_os_get_file_size(const char *path) {
struct stat path_stat;
memset(&path_stat, 0, sizeof(path_stat));
if (stat(path, &path_stat) == 0) {
/* Stat returns size taken up by directory entry, so return 0 */
if (S_ISDIR(path_stat.st_mode))
return 0;
return path_stat.st_size;
}
return 0;
}
int32_t mz_os_get_file_date(const char *path, time_t *modified_date, time_t *accessed_date, time_t *creation_date) {
struct stat path_stat;
char *name = NULL;
size_t len = 0;
int32_t err = MZ_INTERNAL_ERROR;
memset(&path_stat, 0, sizeof(path_stat));
if (strcmp(path, "-") != 0) {
/* Not all systems allow stat'ing a file with / appended */
len = strlen(path);
name = (char *)malloc(len + 1);
strncpy(name, path, len + 1);
mz_path_remove_slash(name);
if (stat(name, &path_stat) == 0) {
if (modified_date != NULL)
*modified_date = path_stat.st_mtime;
if (accessed_date != NULL)
*accessed_date = path_stat.st_atime;
/* Creation date not supported */
if (creation_date != NULL)
*creation_date = 0;
err = MZ_OK;
}
free(name);
}
return err;
}
int32_t mz_os_set_file_date(const char *path, time_t modified_date, time_t accessed_date, time_t creation_date) {
struct utimbuf ut;
ut.actime = accessed_date;
ut.modtime = modified_date;
/* Creation date not supported */
MZ_UNUSED(creation_date);
if (utime(path, &ut) != 0)
return MZ_INTERNAL_ERROR;
return MZ_OK;
}
int32_t mz_os_get_file_attribs(const char *path, uint32_t *attributes) {
struct stat path_stat;
int32_t err = MZ_OK;
memset(&path_stat, 0, sizeof(path_stat));
if (lstat(path, &path_stat) == -1)
err = MZ_INTERNAL_ERROR;
*attributes = path_stat.st_mode;
return err;
}
int32_t mz_os_set_file_attribs(const char *path, uint32_t attributes) {
int32_t err = MZ_OK;
if (chmod(path, (mode_t)attributes) == -1)
err = MZ_INTERNAL_ERROR;
return err;
}
int32_t mz_os_make_dir(const char *path) {
int32_t err = 0;
err = mkdir(path, 0755);
if (err != 0 && errno != EEXIST)
return MZ_INTERNAL_ERROR;
return MZ_OK;
}
DIR* mz_os_open_dir(const char *path) {
return opendir(path);
}
struct dirent* mz_os_read_dir(DIR *dir) {
if (dir == NULL)
return NULL;
return readdir(dir);
}
int32_t mz_os_close_dir(DIR *dir) {
if (dir == NULL)
return MZ_PARAM_ERROR;
if (closedir(dir) == -1)
return MZ_INTERNAL_ERROR;
return MZ_OK;
}
int32_t mz_os_is_dir(const char *path) {
struct stat path_stat;
memset(&path_stat, 0, sizeof(path_stat));
stat(path, &path_stat);
if (S_ISDIR(path_stat.st_mode))
return MZ_OK;
return MZ_EXIST_ERROR;
}
int32_t mz_os_is_symlink(const char *path) {
struct stat path_stat;
memset(&path_stat, 0, sizeof(path_stat));
lstat(path, &path_stat);
if (S_ISLNK(path_stat.st_mode))
return MZ_OK;
return MZ_EXIST_ERROR;
}
int32_t mz_os_make_symlink(const char *path, const char *target_path) {
if (symlink(target_path, path) != 0)
return MZ_INTERNAL_ERROR;
return MZ_OK;
}
int32_t mz_os_read_symlink(const char *path, char *target_path, int32_t max_target_path) {
size_t length = 0;
length = (size_t)readlink(path, target_path, max_target_path - 1);
if (length == (size_t)-1)
return MZ_EXIST_ERROR;
target_path[length] = 0;
return MZ_OK;
}
uint64_t mz_os_ms_time(void) {
struct timespec ts;
#if defined(__APPLE__)
clock_serv_t cclock;
mach_timespec_t mts;
host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
clock_get_time(cclock, &mts);
mach_port_deallocate(mach_task_self(), cclock);
ts.tv_sec = mts.tv_sec;
ts.tv_nsec = mts.tv_nsec;
#else
clock_gettime(CLOCK_MONOTONIC, &ts);
#endif
return ((uint64_t)ts.tv_sec * 1000) + ((uint64_t)ts.tv_nsec / 1000000);
}
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