1 /*-
2 * Copyright (c) 2012 Alistair Crooks <agc@NetBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25 #include <sys/types.h>
26 #include <sys/param.h>
27 #include <sys/syslog.h>
28
29 #ifdef _KERNEL
30 # include <sys/kmem.h>
31 #else
32 # include <ctype.h>
33 # include <inttypes.h>
34 # include <stdarg.h>
35 # include <stdio.h>
36 # include <stdlib.h>
37 # include <string.h>
38 # include <time.h>
39 # include <unistd.h>
40 #endif
41
42 #include "misc.h"
43
44 #ifndef USE_ARG
45 #define USE_ARG(x) /*LINTED*/(void)&(x)
46 #endif
47
48 void *
netpgp_allocate(size_t n,size_t nels)49 netpgp_allocate(size_t n, size_t nels)
50 {
51 #ifdef _KERNEL
52 return kmem_zalloc(n * nels, KM_SLEEP);
53 #else
54 return calloc(n, nels);
55 #endif
56 }
57
58 void
netpgp_deallocate(void * ptr,size_t size)59 netpgp_deallocate(void *ptr, size_t size)
60 {
61 #ifdef _KERNEL
62 kmem_free(ptr, size);
63 #else
64 USE_ARG(size);
65 free(ptr);
66 #endif
67 }
68
69 #define HEXDUMP_LINELEN 16
70
71 #ifndef PRIsize
72 #define PRIsize "z"
73 #endif
74
75 /* show hexadecimal/ascii dump */
76 ssize_t
netpgp_hexdump(const void * vin,const size_t len,void * outvp,size_t size)77 netpgp_hexdump(const void *vin, const size_t len, void *outvp, size_t size)
78 {
79 const char *in = (const char *)vin;
80 size_t i;
81 char line[HEXDUMP_LINELEN + 1];
82 char *out = (char *)outvp;
83 int o;
84
85 for (i = 0, o = 0 ; i < len ; i++) {
86 if (i % HEXDUMP_LINELEN == 0) {
87 o += snprintf(&out[o], size - o,
88 "%.5" PRIsize "u | ", i);
89 } else if (i % (HEXDUMP_LINELEN / 2) == 0) {
90 o += snprintf(&out[o], size - o, " ");
91 }
92 o += snprintf(&out[o], size - o, "%.02x ", (uint8_t)in[i]);
93 line[i % HEXDUMP_LINELEN] =
94 (isprint((uint8_t)in[i])) ? in[i] : '.';
95 if (i % HEXDUMP_LINELEN == HEXDUMP_LINELEN - 1) {
96 line[HEXDUMP_LINELEN] = 0x0;
97 o += snprintf(&out[o], size - o, " | %s\n", line);
98 }
99 }
100 if (i % HEXDUMP_LINELEN != 0) {
101 for ( ; i % HEXDUMP_LINELEN != 0 ; i++) {
102 o += snprintf(&out[o], size - o, " ");
103 if (i % (HEXDUMP_LINELEN / 2) == 0) {
104 o += snprintf(&out[o], size - o, " ");
105 }
106 line[i % HEXDUMP_LINELEN] = ' ';
107 }
108 line[HEXDUMP_LINELEN] = 0x0;
109 o += snprintf(&out[o], size - o, " | %s\n", line);
110 }
111 return (ssize_t)o;
112 }
113