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 28 #ifdef _KERNEL 29 # include <sys/kmem.h> 30 #else 31 # include <ctype.h> 32 # include <inttypes.h> 33 # include <stdarg.h> 34 # include <stdio.h> 35 # include <stdlib.h> 36 # include <string.h> 37 # include <time.h> 38 # include <unistd.h> 39 #endif 40 41 #include "misc.h" 42 43 #ifndef USE_ARG 44 #define USE_ARG(x) /*LINTED*/(void)&(x) 45 #endif 46 47 void * 48 netpgp_allocate(size_t n, size_t nels) 49 { 50 #ifdef _KERNEL 51 return kmem_zalloc(n * nels, KM_SLEEP); 52 #else 53 return calloc(n, nels); 54 #endif 55 } 56 57 void 58 netpgp_deallocate(void *ptr, size_t size) 59 { 60 #ifdef _KERNEL 61 kmem_free(ptr, size); 62 #else 63 USE_ARG(size); 64 free(ptr); 65 #endif 66 } 67 68 #define HEXDUMP_LINELEN 16 69 70 #ifndef PRIsize 71 #define PRIsize "z" 72 #endif 73 74 /* show hexadecimal/ascii dump */ 75 ssize_t 76 netpgp_hexdump(const void *vin, const size_t len, void *outvp, size_t size) 77 { 78 const char *in = (const char *)vin; 79 size_t i; 80 char line[HEXDUMP_LINELEN + 1]; 81 char *out = (char *)outvp; 82 int o; 83 84 for (i = 0, o = 0 ; i < len ; i++) { 85 if (i % HEXDUMP_LINELEN == 0) { 86 o += snprintf(&out[o], size - o, 87 "%.5" PRIsize "u | ", i); 88 } else if (i % (HEXDUMP_LINELEN / 2) == 0) { 89 o += snprintf(&out[o], size - o, " "); 90 } 91 o += snprintf(&out[o], size - o, "%.02x ", (uint8_t)in[i]); 92 line[i % HEXDUMP_LINELEN] = 93 (isprint((uint8_t)in[i])) ? in[i] : '.'; 94 if (i % HEXDUMP_LINELEN == HEXDUMP_LINELEN - 1) { 95 line[HEXDUMP_LINELEN] = 0x0; 96 o += snprintf(&out[o], size - o, " | %s\n", line); 97 } 98 } 99 if (i % HEXDUMP_LINELEN != 0) { 100 for ( ; i % HEXDUMP_LINELEN != 0 ; i++) { 101 o += snprintf(&out[o], size - o, " "); 102 if (i % (HEXDUMP_LINELEN / 2) == 0) { 103 o += snprintf(&out[o], size - o, " "); 104 } 105 line[i % HEXDUMP_LINELEN] = ' '; 106 } 107 line[HEXDUMP_LINELEN] = 0x0; 108 o += snprintf(&out[o], size - o, " | %s\n", line); 109 } 110 return (ssize_t)o; 111 } 112