millert@openbsd.org | 1910a28 | 2015-02-05 12:59:57 +0000 | [diff] [blame] | 1 | /* $OpenBSD: sshbuf-misc.c,v 1.3 2015/02/05 12:59:57 millert Exp $ */ |
Damien Miller | 05e82c3 | 2014-05-15 14:33:43 +1000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (c) 2011 Damien Miller |
| 4 | * |
| 5 | * Permission to use, copy, modify, and distribute this software for any |
| 6 | * purpose with or without fee is hereby granted, provided that the above |
| 7 | * copyright notice and this permission notice appear in all copies. |
| 8 | * |
| 9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 16 | */ |
| 17 | |
| 18 | #include "includes.h" |
| 19 | |
| 20 | #include <sys/types.h> |
| 21 | #include <sys/socket.h> |
| 22 | #include <netinet/in.h> |
| 23 | #include <errno.h> |
| 24 | #include <stdlib.h> |
millert@openbsd.org | 1910a28 | 2015-02-05 12:59:57 +0000 | [diff] [blame] | 25 | #include <stdint.h> |
Damien Miller | 05e82c3 | 2014-05-15 14:33:43 +1000 | [diff] [blame] | 26 | #include <stdio.h> |
| 27 | #include <limits.h> |
| 28 | #include <string.h> |
| 29 | #include <resolv.h> |
| 30 | #include <ctype.h> |
| 31 | |
| 32 | #include "ssherr.h" |
| 33 | #define SSHBUF_INTERNAL |
| 34 | #include "sshbuf.h" |
| 35 | |
| 36 | void |
Damien Miller | 8668706 | 2014-07-02 15:28:02 +1000 | [diff] [blame] | 37 | sshbuf_dump_data(const void *s, size_t len, FILE *f) |
Damien Miller | 05e82c3 | 2014-05-15 14:33:43 +1000 | [diff] [blame] | 38 | { |
Damien Miller | 8668706 | 2014-07-02 15:28:02 +1000 | [diff] [blame] | 39 | size_t i, j; |
| 40 | const u_char *p = (const u_char *)s; |
Damien Miller | 05e82c3 | 2014-05-15 14:33:43 +1000 | [diff] [blame] | 41 | |
Damien Miller | 05e82c3 | 2014-05-15 14:33:43 +1000 | [diff] [blame] | 42 | for (i = 0; i < len; i += 16) { |
| 43 | fprintf(f, "%.4zd: ", i); |
| 44 | for (j = i; j < i + 16; j++) { |
| 45 | if (j < len) |
| 46 | fprintf(f, "%02x ", p[j]); |
| 47 | else |
| 48 | fprintf(f, " "); |
| 49 | } |
| 50 | fprintf(f, " "); |
| 51 | for (j = i; j < i + 16; j++) { |
| 52 | if (j < len) { |
| 53 | if (isascii(p[j]) && isprint(p[j])) |
| 54 | fprintf(f, "%c", p[j]); |
| 55 | else |
| 56 | fprintf(f, "."); |
| 57 | } |
| 58 | } |
| 59 | fprintf(f, "\n"); |
| 60 | } |
| 61 | } |
| 62 | |
Damien Miller | 8668706 | 2014-07-02 15:28:02 +1000 | [diff] [blame] | 63 | void |
| 64 | sshbuf_dump(struct sshbuf *buf, FILE *f) |
| 65 | { |
| 66 | fprintf(f, "buffer %p len = %zu\n", buf, sshbuf_len(buf)); |
| 67 | sshbuf_dump_data(sshbuf_ptr(buf), sshbuf_len(buf), f); |
| 68 | } |
| 69 | |
Damien Miller | 05e82c3 | 2014-05-15 14:33:43 +1000 | [diff] [blame] | 70 | char * |
| 71 | sshbuf_dtob16(struct sshbuf *buf) |
| 72 | { |
| 73 | size_t i, j, len = sshbuf_len(buf); |
| 74 | const u_char *p = sshbuf_ptr(buf); |
| 75 | char *ret; |
| 76 | const char hex[] = "0123456789abcdef"; |
| 77 | |
| 78 | if (len == 0) |
| 79 | return strdup(""); |
| 80 | if (SIZE_MAX / 2 <= len || (ret = malloc(len * 2 + 1)) == NULL) |
| 81 | return NULL; |
| 82 | for (i = j = 0; i < len; i++) { |
| 83 | ret[j++] = hex[(p[i] >> 4) & 0xf]; |
| 84 | ret[j++] = hex[p[i] & 0xf]; |
| 85 | } |
| 86 | ret[j] = '\0'; |
| 87 | return ret; |
| 88 | } |
| 89 | |
| 90 | char * |
| 91 | sshbuf_dtob64(struct sshbuf *buf) |
| 92 | { |
| 93 | size_t len = sshbuf_len(buf), plen; |
| 94 | const u_char *p = sshbuf_ptr(buf); |
| 95 | char *ret; |
| 96 | int r; |
| 97 | |
| 98 | if (len == 0) |
| 99 | return strdup(""); |
| 100 | plen = ((len + 2) / 3) * 4 + 1; |
| 101 | if (SIZE_MAX / 2 <= len || (ret = malloc(plen)) == NULL) |
| 102 | return NULL; |
| 103 | if ((r = b64_ntop(p, len, ret, plen)) == -1) { |
| 104 | bzero(ret, plen); |
| 105 | free(ret); |
| 106 | return NULL; |
| 107 | } |
| 108 | return ret; |
| 109 | } |
| 110 | |
| 111 | int |
| 112 | sshbuf_b64tod(struct sshbuf *buf, const char *b64) |
| 113 | { |
| 114 | size_t plen = strlen(b64); |
| 115 | int nlen, r; |
| 116 | u_char *p; |
| 117 | |
| 118 | if (plen == 0) |
| 119 | return 0; |
| 120 | if ((p = malloc(plen)) == NULL) |
| 121 | return SSH_ERR_ALLOC_FAIL; |
| 122 | if ((nlen = b64_pton(b64, p, plen)) < 0) { |
| 123 | bzero(p, plen); |
| 124 | free(p); |
| 125 | return SSH_ERR_INVALID_FORMAT; |
| 126 | } |
| 127 | if ((r = sshbuf_put(buf, p, nlen)) < 0) { |
| 128 | bzero(p, plen); |
| 129 | free(p); |
| 130 | return r; |
| 131 | } |
| 132 | bzero(p, plen); |
| 133 | free(p); |
| 134 | return 0; |
| 135 | } |
| 136 | |