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      1 /* $NetBSD: utils.h,v 1.1 2025/02/24 13:47:57 christos Exp $ */
      2 
      3 /*
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     14  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     16  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     19  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     23  * SUCH DAMAGE.
     24  */
     25 
     26 #ifndef _UTILS_H_
     27 #define _UTILS_H_
     28 
     29 #ifndef lint
     30 __RCSID("$NetBSD: utils.h,v 1.1 2025/02/24 13:47:57 christos Exp $");
     31 #endif /* not lint */
     32 
     33 #if 0
     34 /* See sys/kern/kern_uuid.c */
     35 int	uuid_printf(const struct uuid *);
     36 void	uuid_dec_be(const void *, struct uuid *);
     37 void	uuid_dec_le(const void *, struct uuid *);
     38 void	uuid_enc_be(void *, const struct uuid *);
     39 void	uuid_enc_le(void *, const struct uuid *);
     40 int	uuidgen(struct uuid *, int);
     41 #endif
     42 
     43 #include <string.h>
     44 #include <util.h>
     45 
     46 struct uuid;
     47 
     48 static inline void *
     49 memdup(const void *src, size_t sz)
     50 {
     51 	void *dst;
     52 
     53 	dst = emalloc(sz);
     54 	memcpy(dst, src, sz);
     55 	return dst;
     56 }
     57 
     58 static inline char *
     59 encode_data(const uint8_t *data, size_t len)
     60 {
     61 	char *bp;
     62 
     63 	bp = emalloc(len * 2 + 1);
     64 	for (size_t i = 0; i < len; i++)
     65 		snprintf(&bp[i * 2], 3, "%02x", data[i]);
     66 	bp[len * 2] = '\0';
     67 
     68 	return bp;
     69 }
     70 
     71 static inline size_t
     72 ucs2nlen(const uint16_t *src, size_t maxlen)
     73 {
     74 	size_t i;
     75 
     76 	for (i = 0; i < maxlen; i++) {
     77 		if (src[i] == '\0')
     78 			break;
     79 	}
     80 	return i;
     81 }
     82 
     83 char *ucs2_to_utf8(const uint16_t *, size_t, char *, size_t *);
     84 uint16_t *utf8_to_ucs2(const char *, size_t, uint16_t *, size_t *);
     85 size_t utf8_to_ucs2_size(const char *);
     86 
     87 int uuid_scanf(struct uuid *, const char *);
     88 int uuid_snprintf(char *, size_t, const struct uuid *);
     89 int uuid_printf(const struct uuid *);
     90 
     91 void show_data(const uint8_t *, size_t, const char *);
     92 uint16_t strtous(const char *, char **, int);
     93 
     94 char *read_file(const char *, size_t *);
     95 
     96 #endif /* _UTILS_H_ */
     97