/src/minizip-ng/mz_os_posix.c

Source (jump to first uncovered line)
/* mz_os_posix.c -- System functions for posix
   part of the minizip-ng project

   Copyright (C) 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 <string.h>
#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 <stdlib.h> /* arc4random_buf */
#endif

#ifndef MZ_PRESERVE_NATIVE_STRUCTURE
#  define MZ_PRESERVE_NATIVE_STRUCTURE 1
#endif

/***************************************************************************/

#if defined(HAVE_ICONV)
char *mz_os_utf8_string_create(const char *string, int32_t encoding) {
    iconv_t cd;
    /// up to CP2147483647
    char string_encoding[13];
    const char *from_encoding = NULL;
    size_t result = 0;
    size_t string_length = 0;
    size_t string_utf8_size = 0;
    char *string_utf8 = NULL;
    char *string_utf8_ptr = NULL;

    if (!string || encoding <= 0)
        return NULL;

    if (encoding == MZ_ENCODING_UTF8)
        from_encoding = "UTF-8";
    else {
        snprintf(string_encoding, sizeof(string_encoding), "CP%03" PRId32, encoding);
        from_encoding = string_encoding;
    }

    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 = (char *)calloc((int32_t)(string_utf8_size + 1), sizeof(char));
    string_utf8_ptr = string_utf8;

    if (string_utf8) {
        result = iconv(cd, (char **)&string, &string_length, (char **)&string_utf8_ptr, &string_utf8_size);
    }

    iconv_close(cd);

    if (result == (size_t)-1) {
        free(string_utf8);
        string_utf8 = NULL;
    }

    return string_utf8;
}
#else
char *mz_os_utf8_string_create(const char *string, int32_t encoding) {
    return strdup(string);
}
#endif

void mz_os_utf8_string_delete(char **string) {
    if (string) {
        free(*string);
        *string = NULL;
    }
}

/***************************************************************************/

#if 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;
}
#elif 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;
}
#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;
    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 */
        name = strdup(path);
        mz_path_remove_slash(name);

        if (stat(name, &path_stat) == 0) {
            if (modified_date)
                *modified_date = path_stat.st_mtime;
            if (accessed_date)
                *accessed_date = path_stat.st_atime;
            /* Creation date not supported */
            if (creation_date)
                *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)
        return NULL;
    return readdir(dir);
}

int32_t mz_os_close_dir(DIR *dir) {
    if (!dir)
        return MZ_PARAM_ERROR;
    if (closedir(dir) == -1)
        return MZ_INTERNAL_ERROR;
    return MZ_OK;
}

int32_t mz_os_is_dir_separator(const char c) {
#if MZ_PRESERVE_NATIVE_STRUCTURE
    // While not strictly adhering to 4.4.17.1,
    // this preserves UNIX filesystem structure.
    return c == '/';
#else
    // While strictly adhering to 4.4.17.1,
    // this corrupts UNIX filesystem structure (a filename with a '\\' will become a folder + a file).
    return c == '\\' || c == '/';
#endif
}

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;
#elif !defined(_POSIX_MONOTONIC_CLOCK) || _POSIX_MONOTONIC_CLOCK < 0
    clock_gettime(CLOCK_REALTIME, &ts);
#elif _POSIX_MONOTONIC_CLOCK > 0
    clock_gettime(CLOCK_MONOTONIC, &ts);
#else
    if (sysconf(_SC_MONOTONIC_CLOCK) > 0)
        clock_gettime(CLOCK_MONOTONIC, &ts);
    else
        clock_gettime(CLOCK_REALTIME, &ts);
#endif

    return ((uint64_t)ts.tv_sec * 1000) + ((uint64_t)ts.tv_nsec / 1000000);
}

Coverage Report

Created: 2025-07-11 06:45

Line	Count	Source (jump to first uncovered line)
1		/* mz_os_posix.c -- System functions for posix
2		part of the minizip-ng project
3
4		Copyright (C) Nathan Moinvaziri
5		https://github.com/zlib-ng/minizip-ng
6
7		This program is distributed under the terms of the same license as zlib.
8		See the accompanying LICENSE file for the full text of the license.
9		*/
10
11		#include "mz.h"
12		#include "mz_strm.h"
13		#include "mz_os.h"
14
15		#include <stdio.h> /* rename */
16		#include <errno.h>
17		#if defined(HAVE_ICONV)
18		# include <iconv.h>
19		#endif
20		#include <string.h>
21		#include <sys/types.h>
22		#include <sys/stat.h>
23
24		#ifndef _WIN32
25		# include <utime.h>
26		# include <unistd.h>
27		#endif
28		#if defined(__APPLE__)
29		# include <mach/clock.h>
30		# include <mach/mach.h>
31		#endif
32
33		#if defined(HAVE_GETRANDOM)
34		# include <sys/random.h>
35		#endif
36		#if defined(HAVE_LIBBSD)
37		# include <stdlib.h> /* arc4random_buf */
38		#endif
39
40		#ifndef MZ_PRESERVE_NATIVE_STRUCTURE
41		# define MZ_PRESERVE_NATIVE_STRUCTURE 1
42		#endif
43
44		/***************************************************************************/
45
46		#if defined(HAVE_ICONV)
47	0	char mz_os_utf8_string_create(const char string, int32_t encoding) {
48	0	iconv_t cd;
49		/// up to CP2147483647
50	0	char string_encoding[13];
51	0	const char *from_encoding = NULL;
52	0	size_t result = 0;
53	0	size_t string_length = 0;
54	0	size_t string_utf8_size = 0;
55	0	char *string_utf8 = NULL;
56	0	char *string_utf8_ptr = NULL;
57
58	0	if (!string \|\| encoding <= 0)
59	0	return NULL;
60
61	0	if (encoding == MZ_ENCODING_UTF8)
62	0	from_encoding = "UTF-8";
63	0	else {
64	0	snprintf(string_encoding, sizeof(string_encoding), "CP%03" PRId32, encoding);
65	0	from_encoding = string_encoding;
66	0	}
67
68	0	cd = iconv_open("UTF-8", from_encoding);
69	0	if (cd == (iconv_t)-1)
70	0	return NULL;
71
72	0	string_length = strlen(string);
73	0	string_utf8_size = string_length * 2;
74	0	string_utf8 = (char *)calloc((int32_t)(string_utf8_size + 1), sizeof(char));
75	0	string_utf8_ptr = string_utf8;
76
77	0	if (string_utf8) {
78	0	result = iconv(cd, (char )&string, &string_length, (char )&string_utf8_ptr, &string_utf8_size);
79	0	}
80
81	0	iconv_close(cd);
82
83	0	if (result == (size_t)-1) {
84	0	free(string_utf8);
85	0	string_utf8 = NULL;
86	0	}
87
88	0	return string_utf8;
89	0	}
90		#else
91		char mz_os_utf8_string_create(const char string, int32_t encoding) {
92		return strdup(string);
93		}
94		#endif
95
96	0	void mz_os_utf8_string_delete(char **string) {
97	0	if (string) {
98	0	free(*string);
99	0	*string = NULL;
100	0	}
101	0	}
102
103		/***************************************************************************/
104
105		#if defined(HAVE_GETRANDOM)
106		int32_t mz_os_rand(uint8_t *buf, int32_t size) {
107		int32_t left = size;
108		int32_t written = 0;
109
110		while (left > 0) {
111		written = getrandom(buf, left, 0);
112		if (written < 0)
113		return MZ_INTERNAL_ERROR;
114
115		buf += written;
116		left -= written;
117		}
118		return size - left;
119		}
120		#elif defined(HAVE_ARC4RANDOM_BUF)
121		int32_t mz_os_rand(uint8_t *buf, int32_t size) {
122		if (size < 0)
123		return 0;
124		arc4random_buf(buf, (uint32_t)size);
125		return size;
126		}
127		#elif defined(HAVE_ARC4RANDOM)
128		int32_t mz_os_rand(uint8_t *buf, int32_t size) {
129		int32_t left = size;
130		for (; left > 2; left -= 3, buf += 3) {
131		uint32_t val = arc4random();
132
133		buf[0] = (val) & 0xFF;
134		buf[1] = (val >> 8) & 0xFF;
135		buf[2] = (val >> 16) & 0xFF;
136		}
137		for (; left > 0; left--, buf++) {
138		*buf = arc4random() & 0xFF;
139		}
140		return size - left;
141		}
142		#else
143	0	int32_t mz_os_rand(uint8_t *buf, int32_t size) {
144	0	static unsigned calls = 0;
145	0	int32_t i = 0;
146
147		/* Ensure different random header each time */
148	0	if (++calls == 1) {
149	0	# define PI_SEED 3141592654UL
150	0	srand((unsigned)(time(NULL) ^ PI_SEED));
151	0	}
152
153	0	while (i < size)
154	0	buf[i++] = (rand() >> 7) & 0xff;
155
156	0	return size;
157	0	}
158		#endif
159
160	0	int32_t mz_os_rename(const char source_path, const char target_path) {
161	0	if (rename(source_path, target_path) == -1)
162	0	return MZ_EXIST_ERROR;
163
164	0	return MZ_OK;
165	0	}
166
167	0	int32_t mz_os_unlink(const char *path) {
168	0	if (unlink(path) == -1)
169	0	return MZ_EXIST_ERROR;
170
171	0	return MZ_OK;
172	0	}
173
174	0	int32_t mz_os_file_exists(const char *path) {
175	0	struct stat path_stat;
176
177	0	memset(&path_stat, 0, sizeof(path_stat));
178	0	if (stat(path, &path_stat) == 0)
179	0	return MZ_OK;
180	0	return MZ_EXIST_ERROR;
181	0	}
182
183	0	int64_t mz_os_get_file_size(const char *path) {
184	0	struct stat path_stat;
185
186	0	memset(&path_stat, 0, sizeof(path_stat));
187	0	if (stat(path, &path_stat) == 0) {
188		/* Stat returns size taken up by directory entry, so return 0 */
189	0	if (S_ISDIR(path_stat.st_mode))
190	0	return 0;
191
192	0	return path_stat.st_size;
193	0	}
194
195	0	return 0;
196	0	}
197
198	0	int32_t mz_os_get_file_date(const char path, time_t modified_date, time_t accessed_date, time_t creation_date) {
199	0	struct stat path_stat;
200	0	char *name = NULL;
201	0	int32_t err = MZ_INTERNAL_ERROR;
202
203	0	memset(&path_stat, 0, sizeof(path_stat));
204
205	0	if (strcmp(path, "-") != 0) {
206		/* Not all systems allow stat'ing a file with / appended */
207	0	name = strdup(path);
208	0	mz_path_remove_slash(name);
209
210	0	if (stat(name, &path_stat) == 0) {
211	0	if (modified_date)
212	0	*modified_date = path_stat.st_mtime;
213	0	if (accessed_date)
214	0	*accessed_date = path_stat.st_atime;
215		/* Creation date not supported */
216	0	if (creation_date)
217	0	*creation_date = 0;
218
219	0	err = MZ_OK;
220	0	}
221
222	0	free(name);
223	0	}
224
225	0	return err;
226	0	}
227
228	0	int32_t mz_os_set_file_date(const char *path, time_t modified_date, time_t accessed_date, time_t creation_date) {
229	0	struct utimbuf ut;
230
231	0	ut.actime = accessed_date;
232	0	ut.modtime = modified_date;
233
234		/* Creation date not supported */
235	0	MZ_UNUSED(creation_date);
236
237	0	if (utime(path, &ut) != 0)
238	0	return MZ_INTERNAL_ERROR;
239
240	0	return MZ_OK;
241	0	}
242
243	0	int32_t mz_os_get_file_attribs(const char path, uint32_t attributes) {
244	0	struct stat path_stat;
245	0	int32_t err = MZ_OK;
246
247	0	memset(&path_stat, 0, sizeof(path_stat));
248	0	if (lstat(path, &path_stat) == -1)
249	0	err = MZ_INTERNAL_ERROR;
250	0	*attributes = path_stat.st_mode;
251	0	return err;
252	0	}
253
254	0	int32_t mz_os_set_file_attribs(const char *path, uint32_t attributes) {
255	0	int32_t err = MZ_OK;
256
257	0	if (chmod(path, (mode_t)attributes) == -1)
258	0	err = MZ_INTERNAL_ERROR;
259
260	0	return err;
261	0	}
262
263	0	int32_t mz_os_make_dir(const char *path) {
264	0	int32_t err = 0;
265
266	0	err = mkdir(path, 0755);
267
268	0	if (err != 0 && errno != EEXIST)
269	0	return MZ_INTERNAL_ERROR;
270
271	0	return MZ_OK;
272	0	}
273
274	0	DIR mz_os_open_dir(const char path) {
275	0	return opendir(path);
276	0	}
277
278	0	struct dirent mz_os_read_dir(DIR dir) {
279	0	if (!dir)
280	0	return NULL;
281	0	return readdir(dir);
282	0	}
283
284	0	int32_t mz_os_close_dir(DIR *dir) {
285	0	if (!dir)
286	0	return MZ_PARAM_ERROR;
287	0	if (closedir(dir) == -1)
288	0	return MZ_INTERNAL_ERROR;
289	0	return MZ_OK;
290	0	}
291
292	7.34k	int32_t mz_os_is_dir_separator(const char c) {
293	7.34k	#if MZ_PRESERVE_NATIVE_STRUCTURE
294		// While not strictly adhering to 4.4.17.1,
295		// this preserves UNIX filesystem structure.
296	7.34k	return c == '/';
297		#else
298		// While strictly adhering to 4.4.17.1,
299		// this corrupts UNIX filesystem structure (a filename with a '\\' will become a folder + a file).
300		return c == '\\' \|\| c == '/';
301		#endif
302	7.34k	}
303
304	0	int32_t mz_os_is_dir(const char *path) {
305	0	struct stat path_stat;
306
307	0	memset(&path_stat, 0, sizeof(path_stat));
308	0	stat(path, &path_stat);
309	0	if (S_ISDIR(path_stat.st_mode))
310	0	return MZ_OK;
311
312	0	return MZ_EXIST_ERROR;
313	0	}
314
315	0	int32_t mz_os_is_symlink(const char *path) {
316	0	struct stat path_stat;
317
318	0	memset(&path_stat, 0, sizeof(path_stat));
319	0	lstat(path, &path_stat);
320	0	if (S_ISLNK(path_stat.st_mode))
321	0	return MZ_OK;
322
323	0	return MZ_EXIST_ERROR;
324	0	}
325
326	0	int32_t mz_os_make_symlink(const char path, const char target_path) {
327	0	if (symlink(target_path, path) != 0)
328	0	return MZ_INTERNAL_ERROR;
329	0	return MZ_OK;
330	0	}
331
332	0	int32_t mz_os_read_symlink(const char path, char target_path, int32_t max_target_path) {
333	0	size_t length = 0;
334
335	0	length = (size_t)readlink(path, target_path, max_target_path - 1);
336	0	if (length == (size_t)-1)
337	0	return MZ_EXIST_ERROR;
338
339	0	target_path[length] = 0;
340	0	return MZ_OK;
341	0	}
342
343	0	uint64_t mz_os_ms_time(void) {
344	0	struct timespec ts;
345
346		#if defined(__APPLE__)
347		clock_serv_t cclock;
348		mach_timespec_t mts;
349
350		host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
351		clock_get_time(cclock, &mts);
352		mach_port_deallocate(mach_task_self(), cclock);
353
354		ts.tv_sec = mts.tv_sec;
355		ts.tv_nsec = mts.tv_nsec;
356		#elif !defined(_POSIX_MONOTONIC_CLOCK) \|\| _POSIX_MONOTONIC_CLOCK < 0
357		clock_gettime(CLOCK_REALTIME, &ts);
358		#elif _POSIX_MONOTONIC_CLOCK > 0
359		clock_gettime(CLOCK_MONOTONIC, &ts);
360		#else
361	0	if (sysconf(_SC_MONOTONIC_CLOCK) > 0)
362	0	clock_gettime(CLOCK_MONOTONIC, &ts);
363	0	else
364	0	clock_gettime(CLOCK_REALTIME, &ts);
365	0	#endif
366
367	0	return ((uint64_t)ts.tv_sec * 1000) + ((uint64_t)ts.tv_nsec / 1000000);
368	0	}