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9 |
jlechner |
/*
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* Copyright (c) 1996-1999 by Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#if !defined(_LIBC) && !defined(lint)
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static const char rcsid[] = "$BINDId: ns_print.c,v 8.18 2000/02/29 05:48:12 vixie Exp $";
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#endif
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/* Import. */
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#include <sys/types.h>
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#include <sys/socket.h>
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| 27 |
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#include <netinet/in.h>
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| 28 |
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#include <arpa/nameser.h>
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| 29 |
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#include <arpa/inet.h>
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| 30 |
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| 31 |
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#include <assert.h>
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| 32 |
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#include <errno.h>
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| 33 |
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#include <resolv.h>
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| 34 |
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#include <string.h>
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| 35 |
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#include <ctype.h>
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| 37 |
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#include "libc-symbols.h"
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| 38 |
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| 39 |
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#ifdef SPRINTF_CHAR
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# define SPRINTF(x) strlen(sprintf/**/x)
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| 41 |
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#else
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| 42 |
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# define SPRINTF(x) ((size_t)sprintf x)
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#endif
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| 44 |
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/* Forward. */
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| 46 |
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| 47 |
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static size_t prune_origin(const char *name, const char *origin);
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| 48 |
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static int charstr(const u_char *rdata, const u_char *edata,
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| 49 |
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char **buf, size_t *buflen);
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| 50 |
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static int addname(const u_char *msg, size_t msglen,
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const u_char **p, const char *origin,
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char **buf, size_t *buflen);
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| 53 |
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static void addlen(size_t len, char **buf, size_t *buflen);
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| 54 |
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static int addstr(const char *src, size_t len,
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char **buf, size_t *buflen);
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| 56 |
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static int addtab(size_t len, size_t target, int spaced,
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char **buf, size_t *buflen);
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| 58 |
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/* Proto. */
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| 60 |
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#ifndef _LIBC
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u_int16_t dst_s_dns_key_id(const u_char *, const int);
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#endif
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| 64 |
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| 65 |
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/* Macros. */
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| 66 |
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| 67 |
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#define T(x) \
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do { \
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if ((x) < 0) \
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return (-1); \
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} while (0)
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/* Public. */
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/*
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* int
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* ns_sprintrr(handle, rr, name_ctx, origin, buf, buflen)
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| 78 |
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* Convert an RR to presentation format.
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* return:
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* Number of characters written to buf, or -1 (check errno).
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| 81 |
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*/
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| 82 |
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int
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ns_sprintrr(const ns_msg *handle, const ns_rr *rr,
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const char *name_ctx, const char *origin,
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| 85 |
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char *buf, size_t buflen)
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| 86 |
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{
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| 87 |
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int n;
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| 88 |
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| 89 |
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n = ns_sprintrrf(ns_msg_base(*handle), ns_msg_size(*handle),
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| 90 |
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ns_rr_name(*rr), ns_rr_class(*rr), ns_rr_type(*rr),
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| 91 |
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ns_rr_ttl(*rr), ns_rr_rdata(*rr), ns_rr_rdlen(*rr),
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name_ctx, origin, buf, buflen);
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| 93 |
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return (n);
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| 94 |
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}
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| 95 |
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| 96 |
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/*
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| 97 |
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* int
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| 98 |
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* ns_sprintrrf(msg, msglen, name, class, type, ttl, rdata, rdlen,
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| 99 |
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* name_ctx, origin, buf, buflen)
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* Convert the fields of an RR into presentation format.
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| 101 |
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* return:
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| 102 |
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* Number of characters written to buf, or -1 (check errno).
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| 103 |
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*/
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int
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ns_sprintrrf(const u_char *msg, size_t msglen,
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const char *name, ns_class class, ns_type type,
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u_long ttl, const u_char *rdata, size_t rdlen,
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| 108 |
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const char *name_ctx, const char *origin,
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| 109 |
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char *buf, size_t buflen)
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| 110 |
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{
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| 111 |
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const char *obuf = buf;
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| 112 |
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const u_char *edata = rdata + rdlen;
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| 113 |
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int spaced = 0;
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| 114 |
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| 115 |
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const char *comment;
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| 116 |
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char tmp[100];
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| 117 |
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int len, x;
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| 118 |
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| 119 |
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/*
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* Owner.
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| 121 |
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*/
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| 122 |
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if (name_ctx != NULL && ns_samename(name_ctx, name) == 1) {
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T(addstr("\t\t\t", 3, &buf, &buflen));
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| 124 |
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} else {
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len = prune_origin(name, origin);
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| 126 |
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if (len == 0) {
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| 127 |
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T(addstr("@\t\t\t", 4, &buf, &buflen));
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| 128 |
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} else {
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| 129 |
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T(addstr(name, len, &buf, &buflen));
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| 130 |
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/* Origin not used or not root, and no trailing dot? */
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| 131 |
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if (((origin == NULL || origin[0] == '\0') ||
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| 132 |
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(origin[0] != '.' && origin[1] != '\0' &&
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| 133 |
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name[len] == '\0')) && name[len - 1] != '.') {
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| 134 |
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T(addstr(".", 1, &buf, &buflen));
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| 135 |
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len++;
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| 136 |
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}
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| 137 |
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T(spaced = addtab(len, 24, spaced, &buf, &buflen));
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| 138 |
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}
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| 139 |
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}
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| 140 |
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|
| 141 |
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/*
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| 142 |
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* TTL, Class, Type.
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| 143 |
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*/
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| 144 |
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T(x = ns_format_ttl(ttl, buf, buflen));
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| 145 |
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addlen(x, &buf, &buflen);
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| 146 |
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len = SPRINTF((tmp, " %s %s", p_class(class), p_type(type)));
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| 147 |
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T(addstr(tmp, len, &buf, &buflen));
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| 148 |
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T(spaced = addtab(x + len, 16, spaced, &buf, &buflen));
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| 149 |
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| 150 |
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/*
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| 151 |
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* RData.
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| 152 |
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*/
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| 153 |
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switch (type) {
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| 154 |
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case ns_t_a:
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| 155 |
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if (rdlen != NS_INADDRSZ)
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| 156 |
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goto formerr;
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| 157 |
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(void) inet_ntop(AF_INET, rdata, buf, buflen);
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| 158 |
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addlen(strlen(buf), &buf, &buflen);
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| 159 |
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break;
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| 160 |
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| 161 |
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case ns_t_cname:
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| 162 |
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case ns_t_mb:
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| 163 |
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case ns_t_mg:
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| 164 |
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case ns_t_mr:
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| 165 |
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case ns_t_ns:
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| 166 |
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case ns_t_ptr:
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| 167 |
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T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
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| 168 |
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break;
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| 169 |
|
|
|
| 170 |
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case ns_t_hinfo:
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| 171 |
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case ns_t_isdn:
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| 172 |
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/* First word. */
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| 173 |
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T(len = charstr(rdata, edata, &buf, &buflen));
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| 174 |
|
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if (len == 0)
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| 175 |
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goto formerr;
|
| 176 |
|
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rdata += len;
|
| 177 |
|
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T(addstr(" ", 1, &buf, &buflen));
|
| 178 |
|
|
|
| 179 |
|
|
|
| 180 |
|
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/* Second word, optional in ISDN records. */
|
| 181 |
|
|
if (type == ns_t_isdn && rdata == edata)
|
| 182 |
|
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break;
|
| 183 |
|
|
|
| 184 |
|
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T(len = charstr(rdata, edata, &buf, &buflen));
|
| 185 |
|
|
if (len == 0)
|
| 186 |
|
|
goto formerr;
|
| 187 |
|
|
rdata += len;
|
| 188 |
|
|
break;
|
| 189 |
|
|
|
| 190 |
|
|
case ns_t_soa: {
|
| 191 |
|
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u_long t;
|
| 192 |
|
|
|
| 193 |
|
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/* Server name. */
|
| 194 |
|
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T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
|
| 195 |
|
|
T(addstr(" ", 1, &buf, &buflen));
|
| 196 |
|
|
|
| 197 |
|
|
/* Administrator name. */
|
| 198 |
|
|
T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
|
| 199 |
|
|
T(addstr(" (\n", 3, &buf, &buflen));
|
| 200 |
|
|
spaced = 0;
|
| 201 |
|
|
|
| 202 |
|
|
if ((edata - rdata) != 5*NS_INT32SZ)
|
| 203 |
|
|
goto formerr;
|
| 204 |
|
|
|
| 205 |
|
|
/* Serial number. */
|
| 206 |
|
|
t = ns_get32(rdata); rdata += NS_INT32SZ;
|
| 207 |
|
|
T(addstr("\t\t\t\t\t", 5, &buf, &buflen));
|
| 208 |
|
|
len = SPRINTF((tmp, "%lu", t));
|
| 209 |
|
|
T(addstr(tmp, len, &buf, &buflen));
|
| 210 |
|
|
T(spaced = addtab(len, 16, spaced, &buf, &buflen));
|
| 211 |
|
|
T(addstr("; serial\n", 9, &buf, &buflen));
|
| 212 |
|
|
spaced = 0;
|
| 213 |
|
|
|
| 214 |
|
|
/* Refresh interval. */
|
| 215 |
|
|
t = ns_get32(rdata); rdata += NS_INT32SZ;
|
| 216 |
|
|
T(addstr("\t\t\t\t\t", 5, &buf, &buflen));
|
| 217 |
|
|
T(len = ns_format_ttl(t, buf, buflen));
|
| 218 |
|
|
addlen(len, &buf, &buflen);
|
| 219 |
|
|
T(spaced = addtab(len, 16, spaced, &buf, &buflen));
|
| 220 |
|
|
T(addstr("; refresh\n", 10, &buf, &buflen));
|
| 221 |
|
|
spaced = 0;
|
| 222 |
|
|
|
| 223 |
|
|
/* Retry interval. */
|
| 224 |
|
|
t = ns_get32(rdata); rdata += NS_INT32SZ;
|
| 225 |
|
|
T(addstr("\t\t\t\t\t", 5, &buf, &buflen));
|
| 226 |
|
|
T(len = ns_format_ttl(t, buf, buflen));
|
| 227 |
|
|
addlen(len, &buf, &buflen);
|
| 228 |
|
|
T(spaced = addtab(len, 16, spaced, &buf, &buflen));
|
| 229 |
|
|
T(addstr("; retry\n", 8, &buf, &buflen));
|
| 230 |
|
|
spaced = 0;
|
| 231 |
|
|
|
| 232 |
|
|
/* Expiry. */
|
| 233 |
|
|
t = ns_get32(rdata); rdata += NS_INT32SZ;
|
| 234 |
|
|
T(addstr("\t\t\t\t\t", 5, &buf, &buflen));
|
| 235 |
|
|
T(len = ns_format_ttl(t, buf, buflen));
|
| 236 |
|
|
addlen(len, &buf, &buflen);
|
| 237 |
|
|
T(spaced = addtab(len, 16, spaced, &buf, &buflen));
|
| 238 |
|
|
T(addstr("; expiry\n", 9, &buf, &buflen));
|
| 239 |
|
|
spaced = 0;
|
| 240 |
|
|
|
| 241 |
|
|
/* Minimum TTL. */
|
| 242 |
|
|
t = ns_get32(rdata); rdata += NS_INT32SZ;
|
| 243 |
|
|
T(addstr("\t\t\t\t\t", 5, &buf, &buflen));
|
| 244 |
|
|
T(len = ns_format_ttl(t, buf, buflen));
|
| 245 |
|
|
addlen(len, &buf, &buflen);
|
| 246 |
|
|
T(addstr(" )", 2, &buf, &buflen));
|
| 247 |
|
|
T(spaced = addtab(len, 16, spaced, &buf, &buflen));
|
| 248 |
|
|
T(addstr("; minimum\n", 10, &buf, &buflen));
|
| 249 |
|
|
|
| 250 |
|
|
break;
|
| 251 |
|
|
}
|
| 252 |
|
|
|
| 253 |
|
|
case ns_t_mx:
|
| 254 |
|
|
case ns_t_afsdb:
|
| 255 |
|
|
case ns_t_rt: {
|
| 256 |
|
|
u_int t;
|
| 257 |
|
|
|
| 258 |
|
|
if (rdlen < NS_INT16SZ)
|
| 259 |
|
|
goto formerr;
|
| 260 |
|
|
|
| 261 |
|
|
/* Priority. */
|
| 262 |
|
|
t = ns_get16(rdata);
|
| 263 |
|
|
rdata += NS_INT16SZ;
|
| 264 |
|
|
len = SPRINTF((tmp, "%u ", t));
|
| 265 |
|
|
T(addstr(tmp, len, &buf, &buflen));
|
| 266 |
|
|
|
| 267 |
|
|
/* Target. */
|
| 268 |
|
|
T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
|
| 269 |
|
|
|
| 270 |
|
|
break;
|
| 271 |
|
|
}
|
| 272 |
|
|
|
| 273 |
|
|
case ns_t_px: {
|
| 274 |
|
|
u_int t;
|
| 275 |
|
|
|
| 276 |
|
|
if (rdlen < NS_INT16SZ)
|
| 277 |
|
|
goto formerr;
|
| 278 |
|
|
|
| 279 |
|
|
/* Priority. */
|
| 280 |
|
|
t = ns_get16(rdata);
|
| 281 |
|
|
rdata += NS_INT16SZ;
|
| 282 |
|
|
len = SPRINTF((tmp, "%u ", t));
|
| 283 |
|
|
T(addstr(tmp, len, &buf, &buflen));
|
| 284 |
|
|
|
| 285 |
|
|
/* Name1. */
|
| 286 |
|
|
T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
|
| 287 |
|
|
T(addstr(" ", 1, &buf, &buflen));
|
| 288 |
|
|
|
| 289 |
|
|
/* Name2. */
|
| 290 |
|
|
T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
|
| 291 |
|
|
|
| 292 |
|
|
break;
|
| 293 |
|
|
}
|
| 294 |
|
|
|
| 295 |
|
|
case ns_t_x25:
|
| 296 |
|
|
T(len = charstr(rdata, edata, &buf, &buflen));
|
| 297 |
|
|
if (len == 0)
|
| 298 |
|
|
goto formerr;
|
| 299 |
|
|
rdata += len;
|
| 300 |
|
|
break;
|
| 301 |
|
|
|
| 302 |
|
|
case ns_t_txt:
|
| 303 |
|
|
while (rdata < edata) {
|
| 304 |
|
|
T(len = charstr(rdata, edata, &buf, &buflen));
|
| 305 |
|
|
if (len == 0)
|
| 306 |
|
|
goto formerr;
|
| 307 |
|
|
rdata += len;
|
| 308 |
|
|
if (rdata < edata)
|
| 309 |
|
|
T(addstr(" ", 1, &buf, &buflen));
|
| 310 |
|
|
}
|
| 311 |
|
|
break;
|
| 312 |
|
|
|
| 313 |
|
|
case ns_t_nsap: {
|
| 314 |
|
|
/* 2*255 for hex digits, 128 for '.' and '\0', 2 for
|
| 315 |
|
|
0x if inet_nsap_ntoa starts using it. */
|
| 316 |
|
|
char t[255*2 + 128 + 2];
|
| 317 |
|
|
|
| 318 |
|
|
(void) inet_nsap_ntoa(rdlen, rdata, t);
|
| 319 |
|
|
T(addstr(t, strlen(t), &buf, &buflen));
|
| 320 |
|
|
break;
|
| 321 |
|
|
}
|
| 322 |
|
|
|
| 323 |
|
|
case ns_t_aaaa:
|
| 324 |
|
|
if (rdlen != NS_IN6ADDRSZ)
|
| 325 |
|
|
goto formerr;
|
| 326 |
|
|
(void) inet_ntop(AF_INET6, rdata, buf, buflen);
|
| 327 |
|
|
addlen(strlen(buf), &buf, &buflen);
|
| 328 |
|
|
break;
|
| 329 |
|
|
|
| 330 |
|
|
case ns_t_loc: {
|
| 331 |
|
|
char t[255];
|
| 332 |
|
|
|
| 333 |
|
|
/* XXX protocol format checking? */
|
| 334 |
|
|
(void) loc_ntoa(rdata, t);
|
| 335 |
|
|
T(addstr(t, strlen(t), &buf, &buflen));
|
| 336 |
|
|
break;
|
| 337 |
|
|
}
|
| 338 |
|
|
|
| 339 |
|
|
case ns_t_naptr: {
|
| 340 |
|
|
u_int order, preference;
|
| 341 |
|
|
char t[50];
|
| 342 |
|
|
|
| 343 |
|
|
if (rdlen < 2*NS_INT16SZ)
|
| 344 |
|
|
goto formerr;
|
| 345 |
|
|
|
| 346 |
|
|
/* Order, Precedence. */
|
| 347 |
|
|
order = ns_get16(rdata); rdata += NS_INT16SZ;
|
| 348 |
|
|
preference = ns_get16(rdata); rdata += NS_INT16SZ;
|
| 349 |
|
|
len = SPRINTF((t, "%u %u ", order, preference));
|
| 350 |
|
|
T(addstr(t, len, &buf, &buflen));
|
| 351 |
|
|
|
| 352 |
|
|
/* Flags. */
|
| 353 |
|
|
T(len = charstr(rdata, edata, &buf, &buflen));
|
| 354 |
|
|
if (len == 0)
|
| 355 |
|
|
goto formerr;
|
| 356 |
|
|
rdata += len;
|
| 357 |
|
|
T(addstr(" ", 1, &buf, &buflen));
|
| 358 |
|
|
|
| 359 |
|
|
/* Service. */
|
| 360 |
|
|
T(len = charstr(rdata, edata, &buf, &buflen));
|
| 361 |
|
|
if (len == 0)
|
| 362 |
|
|
goto formerr;
|
| 363 |
|
|
rdata += len;
|
| 364 |
|
|
T(addstr(" ", 1, &buf, &buflen));
|
| 365 |
|
|
|
| 366 |
|
|
/* Regexp. */
|
| 367 |
|
|
T(len = charstr(rdata, edata, &buf, &buflen));
|
| 368 |
|
|
if (len < 0)
|
| 369 |
|
|
return (-1);
|
| 370 |
|
|
if (len == 0)
|
| 371 |
|
|
goto formerr;
|
| 372 |
|
|
rdata += len;
|
| 373 |
|
|
T(addstr(" ", 1, &buf, &buflen));
|
| 374 |
|
|
|
| 375 |
|
|
/* Server. */
|
| 376 |
|
|
T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
|
| 377 |
|
|
break;
|
| 378 |
|
|
}
|
| 379 |
|
|
|
| 380 |
|
|
case ns_t_srv: {
|
| 381 |
|
|
u_int priority, weight, port;
|
| 382 |
|
|
char t[50];
|
| 383 |
|
|
|
| 384 |
|
|
if (rdlen < NS_INT16SZ*3)
|
| 385 |
|
|
goto formerr;
|
| 386 |
|
|
|
| 387 |
|
|
/* Priority, Weight, Port. */
|
| 388 |
|
|
priority = ns_get16(rdata); rdata += NS_INT16SZ;
|
| 389 |
|
|
weight = ns_get16(rdata); rdata += NS_INT16SZ;
|
| 390 |
|
|
port = ns_get16(rdata); rdata += NS_INT16SZ;
|
| 391 |
|
|
len = SPRINTF((t, "%u %u %u ", priority, weight, port));
|
| 392 |
|
|
T(addstr(t, len, &buf, &buflen));
|
| 393 |
|
|
|
| 394 |
|
|
/* Server. */
|
| 395 |
|
|
T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
|
| 396 |
|
|
break;
|
| 397 |
|
|
}
|
| 398 |
|
|
|
| 399 |
|
|
case ns_t_minfo:
|
| 400 |
|
|
case ns_t_rp:
|
| 401 |
|
|
/* Name1. */
|
| 402 |
|
|
T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
|
| 403 |
|
|
T(addstr(" ", 1, &buf, &buflen));
|
| 404 |
|
|
|
| 405 |
|
|
/* Name2. */
|
| 406 |
|
|
T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
|
| 407 |
|
|
|
| 408 |
|
|
break;
|
| 409 |
|
|
|
| 410 |
|
|
case ns_t_wks: {
|
| 411 |
|
|
int n, lcnt;
|
| 412 |
|
|
|
| 413 |
|
|
if (rdlen < NS_INT32SZ + 1)
|
| 414 |
|
|
goto formerr;
|
| 415 |
|
|
|
| 416 |
|
|
/* Address. */
|
| 417 |
|
|
(void) inet_ntop(AF_INET, rdata, buf, buflen);
|
| 418 |
|
|
addlen(strlen(buf), &buf, &buflen);
|
| 419 |
|
|
rdata += NS_INADDRSZ;
|
| 420 |
|
|
|
| 421 |
|
|
/* Protocol. */
|
| 422 |
|
|
len = SPRINTF((tmp, " %u ( ", *rdata));
|
| 423 |
|
|
T(addstr(tmp, len, &buf, &buflen));
|
| 424 |
|
|
rdata += NS_INT8SZ;
|
| 425 |
|
|
|
| 426 |
|
|
/* Bit map. */
|
| 427 |
|
|
n = 0;
|
| 428 |
|
|
lcnt = 0;
|
| 429 |
|
|
while (rdata < edata) {
|
| 430 |
|
|
u_int c = *rdata++;
|
| 431 |
|
|
do {
|
| 432 |
|
|
if (c & 0200) {
|
| 433 |
|
|
if (lcnt == 0) {
|
| 434 |
|
|
T(addstr("\n\t\t\t\t", 5,
|
| 435 |
|
|
&buf, &buflen));
|
| 436 |
|
|
lcnt = 10;
|
| 437 |
|
|
spaced = 0;
|
| 438 |
|
|
}
|
| 439 |
|
|
len = SPRINTF((tmp, "%d ", n));
|
| 440 |
|
|
T(addstr(tmp, len, &buf, &buflen));
|
| 441 |
|
|
lcnt--;
|
| 442 |
|
|
}
|
| 443 |
|
|
c <<= 1;
|
| 444 |
|
|
} while (++n & 07);
|
| 445 |
|
|
}
|
| 446 |
|
|
T(addstr(")", 1, &buf, &buflen));
|
| 447 |
|
|
|
| 448 |
|
|
break;
|
| 449 |
|
|
}
|
| 450 |
|
|
|
| 451 |
|
|
case ns_t_key: {
|
| 452 |
|
|
#ifndef _LIBC
|
| 453 |
|
|
char base64_key[NS_MD5RSA_MAX_BASE64];
|
| 454 |
|
|
u_int keyflags, protocol, algorithm, key_id;
|
| 455 |
|
|
const char *leader;
|
| 456 |
|
|
int n;
|
| 457 |
|
|
|
| 458 |
|
|
if (rdlen < NS_INT16SZ + NS_INT8SZ + NS_INT8SZ)
|
| 459 |
|
|
goto formerr;
|
| 460 |
|
|
|
| 461 |
|
|
/* Key flags, Protocol, Algorithm. */
|
| 462 |
|
|
key_id = dst_s_dns_key_id(rdata, edata-rdata);
|
| 463 |
|
|
keyflags = ns_get16(rdata); rdata += NS_INT16SZ;
|
| 464 |
|
|
protocol = *rdata++;
|
| 465 |
|
|
algorithm = *rdata++;
|
| 466 |
|
|
len = SPRINTF((tmp, "0x%04x %u %u",
|
| 467 |
|
|
keyflags, protocol, algorithm));
|
| 468 |
|
|
T(addstr(tmp, len, &buf, &buflen));
|
| 469 |
|
|
|
| 470 |
|
|
/* Public key data. */
|
| 471 |
|
|
len = b64_ntop(rdata, edata - rdata,
|
| 472 |
|
|
base64_key, sizeof base64_key);
|
| 473 |
|
|
if (len < 0)
|
| 474 |
|
|
goto formerr;
|
| 475 |
|
|
if (len > 15) {
|
| 476 |
|
|
T(addstr(" (", 2, &buf, &buflen));
|
| 477 |
|
|
leader = "\n\t\t";
|
| 478 |
|
|
spaced = 0;
|
| 479 |
|
|
} else
|
| 480 |
|
|
leader = " ";
|
| 481 |
|
|
for (n = 0; n < len; n += 48) {
|
| 482 |
|
|
T(addstr(leader, strlen(leader), &buf, &buflen));
|
| 483 |
|
|
T(addstr(base64_key + n, MIN(len - n, 48),
|
| 484 |
|
|
&buf, &buflen));
|
| 485 |
|
|
}
|
| 486 |
|
|
if (len > 15)
|
| 487 |
|
|
T(addstr(" )", 2, &buf, &buflen));
|
| 488 |
|
|
n = SPRINTF((tmp, " ; key_tag= %u", key_id));
|
| 489 |
|
|
T(addstr(tmp, n, &buf, &buflen));
|
| 490 |
|
|
#endif /* !_LIBC */
|
| 491 |
|
|
|
| 492 |
|
|
break;
|
| 493 |
|
|
}
|
| 494 |
|
|
|
| 495 |
|
|
case ns_t_sig: {
|
| 496 |
|
|
#ifndef _LIBC
|
| 497 |
|
|
char base64_key[NS_MD5RSA_MAX_BASE64];
|
| 498 |
|
|
u_int type, algorithm, labels, footprint;
|
| 499 |
|
|
const char *leader;
|
| 500 |
|
|
u_long t;
|
| 501 |
|
|
int n;
|
| 502 |
|
|
|
| 503 |
|
|
if (rdlen < 22)
|
| 504 |
|
|
goto formerr;
|
| 505 |
|
|
|
| 506 |
|
|
/* Type covered, Algorithm, Label count, Original TTL. */
|
| 507 |
|
|
type = ns_get16(rdata); rdata += NS_INT16SZ;
|
| 508 |
|
|
algorithm = *rdata++;
|
| 509 |
|
|
labels = *rdata++;
|
| 510 |
|
|
t = ns_get32(rdata); rdata += NS_INT32SZ;
|
| 511 |
|
|
len = SPRINTF((tmp, "%s %d %d %lu ",
|
| 512 |
|
|
p_type(type), algorithm, labels, t));
|
| 513 |
|
|
T(addstr(tmp, len, &buf, &buflen));
|
| 514 |
|
|
if (labels > (u_int)dn_count_labels(name))
|
| 515 |
|
|
goto formerr;
|
| 516 |
|
|
|
| 517 |
|
|
/* Signature expiry. */
|
| 518 |
|
|
t = ns_get32(rdata); rdata += NS_INT32SZ;
|
| 519 |
|
|
len = SPRINTF((tmp, "%s ", p_secstodate(t)));
|
| 520 |
|
|
T(addstr(tmp, len, &buf, &buflen));
|
| 521 |
|
|
|
| 522 |
|
|
/* Time signed. */
|
| 523 |
|
|
t = ns_get32(rdata); rdata += NS_INT32SZ;
|
| 524 |
|
|
len = SPRINTF((tmp, "%s ", p_secstodate(t)));
|
| 525 |
|
|
T(addstr(tmp, len, &buf, &buflen));
|
| 526 |
|
|
|
| 527 |
|
|
/* Signature Footprint. */
|
| 528 |
|
|
footprint = ns_get16(rdata); rdata += NS_INT16SZ;
|
| 529 |
|
|
len = SPRINTF((tmp, "%u ", footprint));
|
| 530 |
|
|
T(addstr(tmp, len, &buf, &buflen));
|
| 531 |
|
|
|
| 532 |
|
|
/* Signer's name. */
|
| 533 |
|
|
T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
|
| 534 |
|
|
|
| 535 |
|
|
/* Signature. */
|
| 536 |
|
|
len = b64_ntop(rdata, edata - rdata,
|
| 537 |
|
|
base64_key, sizeof base64_key);
|
| 538 |
|
|
if (len > 15) {
|
| 539 |
|
|
T(addstr(" (", 2, &buf, &buflen));
|
| 540 |
|
|
leader = "\n\t\t";
|
| 541 |
|
|
spaced = 0;
|
| 542 |
|
|
} else
|
| 543 |
|
|
leader = " ";
|
| 544 |
|
|
if (len < 0)
|
| 545 |
|
|
goto formerr;
|
| 546 |
|
|
for (n = 0; n < len; n += 48) {
|
| 547 |
|
|
T(addstr(leader, strlen(leader), &buf, &buflen));
|
| 548 |
|
|
T(addstr(base64_key + n, MIN(len - n, 48),
|
| 549 |
|
|
&buf, &buflen));
|
| 550 |
|
|
}
|
| 551 |
|
|
if (len > 15)
|
| 552 |
|
|
T(addstr(" )", 2, &buf, &buflen));
|
| 553 |
|
|
#endif /* !_LIBC */
|
| 554 |
|
|
break;
|
| 555 |
|
|
}
|
| 556 |
|
|
|
| 557 |
|
|
case ns_t_nxt: {
|
| 558 |
|
|
int n, c;
|
| 559 |
|
|
|
| 560 |
|
|
/* Next domain name. */
|
| 561 |
|
|
T(addname(msg, msglen, &rdata, origin, &buf, &buflen));
|
| 562 |
|
|
|
| 563 |
|
|
/* Type bit map. */
|
| 564 |
|
|
n = edata - rdata;
|
| 565 |
|
|
for (c = 0; c < n*8; c++)
|
| 566 |
|
|
if (NS_NXT_BIT_ISSET(c, rdata)) {
|
| 567 |
|
|
len = SPRINTF((tmp, " %s", p_type(c)));
|
| 568 |
|
|
T(addstr(tmp, len, &buf, &buflen));
|
| 569 |
|
|
}
|
| 570 |
|
|
break;
|
| 571 |
|
|
}
|
| 572 |
|
|
|
| 573 |
|
|
case ns_t_cert: {
|
| 574 |
|
|
u_int c_type, key_tag, alg;
|
| 575 |
|
|
int n, siz;
|
| 576 |
|
|
char base64_cert[8192], *leader, tmp[40];
|
| 577 |
|
|
|
| 578 |
|
|
c_type = ns_get16(rdata); rdata += NS_INT16SZ;
|
| 579 |
|
|
key_tag = ns_get16(rdata); rdata += NS_INT16SZ;
|
| 580 |
|
|
alg = (u_int) *rdata++;
|
| 581 |
|
|
|
| 582 |
|
|
len = SPRINTF((tmp, "%d %d %d ", c_type, key_tag, alg));
|
| 583 |
|
|
T(addstr(tmp, len, &buf, &buflen));
|
| 584 |
|
|
siz = (edata-rdata)*4/3 + 4; /* "+4" accounts for trailing \0 */
|
| 585 |
|
|
if (siz > sizeof(base64_cert) * 3/4) {
|
| 586 |
|
|
char *str = "record too long to print";
|
| 587 |
|
|
T(addstr(str, strlen(str), &buf, &buflen));
|
| 588 |
|
|
}
|
| 589 |
|
|
else {
|
| 590 |
|
|
len = b64_ntop(rdata, edata-rdata, base64_cert, siz);
|
| 591 |
|
|
|
| 592 |
|
|
if (len < 0)
|
| 593 |
|
|
goto formerr;
|
| 594 |
|
|
else if (len > 15) {
|
| 595 |
|
|
T(addstr(" (", 2, &buf, &buflen));
|
| 596 |
|
|
leader = "\n\t\t";
|
| 597 |
|
|
spaced = 0;
|
| 598 |
|
|
}
|
| 599 |
|
|
else
|
| 600 |
|
|
leader = " ";
|
| 601 |
|
|
|
| 602 |
|
|
for (n = 0; n < len; n += 48) {
|
| 603 |
|
|
T(addstr(leader, strlen(leader),
|
| 604 |
|
|
&buf, &buflen));
|
| 605 |
|
|
T(addstr(base64_cert + n, MIN(len - n, 48),
|
| 606 |
|
|
&buf, &buflen));
|
| 607 |
|
|
}
|
| 608 |
|
|
if (len > 15)
|
| 609 |
|
|
T(addstr(" )", 2, &buf, &buflen));
|
| 610 |
|
|
}
|
| 611 |
|
|
break;
|
| 612 |
|
|
}
|
| 613 |
|
|
|
| 614 |
|
|
case ns_t_tsig: {
|
| 615 |
|
|
/* BEW - need to complete this */
|
| 616 |
|
|
int n;
|
| 617 |
|
|
|
| 618 |
|
|
T(len = addname(msg, msglen, &rdata, origin, &buf, &buflen));
|
| 619 |
|
|
T(addstr(" ", 1, &buf, &buflen));
|
| 620 |
|
|
rdata += 8; /* time */
|
| 621 |
|
|
n = ns_get16(rdata); rdata += INT16SZ;
|
| 622 |
|
|
rdata += n; /* sig */
|
| 623 |
|
|
n = ns_get16(rdata); rdata += INT16SZ; /* original id */
|
| 624 |
|
|
sprintf(buf, "%d", ns_get16(rdata));
|
| 625 |
|
|
rdata += INT16SZ;
|
| 626 |
|
|
addlen(strlen(buf), &buf, &buflen);
|
| 627 |
|
|
break;
|
| 628 |
|
|
}
|
| 629 |
|
|
|
| 630 |
|
|
default:
|
| 631 |
|
|
comment = "unknown RR type";
|
| 632 |
|
|
goto hexify;
|
| 633 |
|
|
}
|
| 634 |
|
|
return (buf - obuf);
|
| 635 |
|
|
formerr:
|
| 636 |
|
|
comment = "RR format error";
|
| 637 |
|
|
hexify: {
|
| 638 |
|
|
int n, m;
|
| 639 |
|
|
char *p;
|
| 640 |
|
|
|
| 641 |
|
|
len = SPRINTF((tmp, "\\#(\t\t; %s", comment));
|
| 642 |
|
|
T(addstr(tmp, len, &buf, &buflen));
|
| 643 |
|
|
while (rdata < edata) {
|
| 644 |
|
|
p = tmp;
|
| 645 |
|
|
p += SPRINTF((p, "\n\t"));
|
| 646 |
|
|
spaced = 0;
|
| 647 |
|
|
n = MIN(16, edata - rdata);
|
| 648 |
|
|
for (m = 0; m < n; m++)
|
| 649 |
|
|
p += SPRINTF((p, "%02x ", rdata[m]));
|
| 650 |
|
|
T(addstr(tmp, p - tmp, &buf, &buflen));
|
| 651 |
|
|
if (n < 16) {
|
| 652 |
|
|
T(addstr(")", 1, &buf, &buflen));
|
| 653 |
|
|
T(addtab(p - tmp + 1, 48, spaced, &buf, &buflen));
|
| 654 |
|
|
}
|
| 655 |
|
|
p = tmp;
|
| 656 |
|
|
p += SPRINTF((p, "; "));
|
| 657 |
|
|
for (m = 0; m < n; m++)
|
| 658 |
|
|
*p++ = (isascii(rdata[m]) && isprint(rdata[m]))
|
| 659 |
|
|
? rdata[m]
|
| 660 |
|
|
: '.';
|
| 661 |
|
|
T(addstr(tmp, p - tmp, &buf, &buflen));
|
| 662 |
|
|
rdata += n;
|
| 663 |
|
|
}
|
| 664 |
|
|
return (buf - obuf);
|
| 665 |
|
|
}
|
| 666 |
|
|
}
|
| 667 |
|
|
|
| 668 |
|
|
/* Private. */
|
| 669 |
|
|
|
| 670 |
|
|
/*
|
| 671 |
|
|
* size_t
|
| 672 |
|
|
* prune_origin(name, origin)
|
| 673 |
|
|
* Find out if the name is at or under the current origin.
|
| 674 |
|
|
* return:
|
| 675 |
|
|
* Number of characters in name before start of origin,
|
| 676 |
|
|
* or length of name if origin does not match.
|
| 677 |
|
|
* notes:
|
| 678 |
|
|
* This function should share code with samedomain().
|
| 679 |
|
|
*/
|
| 680 |
|
|
static size_t
|
| 681 |
|
|
prune_origin(const char *name, const char *origin) {
|
| 682 |
|
|
const char *oname = name;
|
| 683 |
|
|
|
| 684 |
|
|
while (*name != '\0') {
|
| 685 |
|
|
if (origin != NULL && ns_samename(name, origin) == 1)
|
| 686 |
|
|
return (name - oname - (name > oname));
|
| 687 |
|
|
while (*name != '\0') {
|
| 688 |
|
|
if (*name == '\\') {
|
| 689 |
|
|
name++;
|
| 690 |
|
|
/* XXX need to handle \nnn form. */
|
| 691 |
|
|
if (*name == '\0')
|
| 692 |
|
|
break;
|
| 693 |
|
|
} else if (*name == '.') {
|
| 694 |
|
|
name++;
|
| 695 |
|
|
break;
|
| 696 |
|
|
}
|
| 697 |
|
|
name++;
|
| 698 |
|
|
}
|
| 699 |
|
|
}
|
| 700 |
|
|
return (name - oname);
|
| 701 |
|
|
}
|
| 702 |
|
|
|
| 703 |
|
|
/*
|
| 704 |
|
|
* int
|
| 705 |
|
|
* charstr(rdata, edata, buf, buflen)
|
| 706 |
|
|
* Format a <character-string> into the presentation buffer.
|
| 707 |
|
|
* return:
|
| 708 |
|
|
* Number of rdata octets consumed
|
| 709 |
|
|
* 0 for protocol format error
|
| 710 |
|
|
* -1 for output buffer error
|
| 711 |
|
|
* side effects:
|
| 712 |
|
|
* buffer is advanced on success.
|
| 713 |
|
|
*/
|
| 714 |
|
|
static int
|
| 715 |
|
|
charstr(const u_char *rdata, const u_char *edata, char **buf, size_t *buflen) {
|
| 716 |
|
|
const u_char *odata = rdata;
|
| 717 |
|
|
size_t save_buflen = *buflen;
|
| 718 |
|
|
char *save_buf = *buf;
|
| 719 |
|
|
|
| 720 |
|
|
if (addstr("\"", 1, buf, buflen) < 0)
|
| 721 |
|
|
goto enospc;
|
| 722 |
|
|
if (rdata < edata) {
|
| 723 |
|
|
int n = *rdata;
|
| 724 |
|
|
|
| 725 |
|
|
if (rdata + 1 + n <= edata) {
|
| 726 |
|
|
rdata++;
|
| 727 |
|
|
while (n-- > 0) {
|
| 728 |
|
|
if (strchr("\n\"\\", *rdata) != NULL)
|
| 729 |
|
|
if (addstr("\\", 1, buf, buflen) < 0)
|
| 730 |
|
|
goto enospc;
|
| 731 |
|
|
if (addstr((const char *)rdata, 1,
|
| 732 |
|
|
buf, buflen) < 0)
|
| 733 |
|
|
goto enospc;
|
| 734 |
|
|
rdata++;
|
| 735 |
|
|
}
|
| 736 |
|
|
}
|
| 737 |
|
|
}
|
| 738 |
|
|
if (addstr("\"", 1, buf, buflen) < 0)
|
| 739 |
|
|
goto enospc;
|
| 740 |
|
|
return (rdata - odata);
|
| 741 |
|
|
enospc:
|
| 742 |
|
|
__set_errno (ENOSPC);
|
| 743 |
|
|
*buf = save_buf;
|
| 744 |
|
|
*buflen = save_buflen;
|
| 745 |
|
|
return (-1);
|
| 746 |
|
|
}
|
| 747 |
|
|
|
| 748 |
|
|
static int
|
| 749 |
|
|
addname(const u_char *msg, size_t msglen,
|
| 750 |
|
|
const u_char **pp, const char *origin,
|
| 751 |
|
|
char **buf, size_t *buflen)
|
| 752 |
|
|
{
|
| 753 |
|
|
size_t newlen, save_buflen = *buflen;
|
| 754 |
|
|
char *save_buf = *buf;
|
| 755 |
|
|
int n;
|
| 756 |
|
|
|
| 757 |
|
|
n = dn_expand(msg, msg + msglen, *pp, *buf, *buflen);
|
| 758 |
|
|
if (n < 0)
|
| 759 |
|
|
goto enospc; /* Guess. */
|
| 760 |
|
|
newlen = prune_origin(*buf, origin);
|
| 761 |
|
|
if (newlen == 0) {
|
| 762 |
|
|
/* Use "@" instead of name. */
|
| 763 |
|
|
if (newlen + 2 > *buflen)
|
| 764 |
|
|
goto enospc; /* No room for "@\0". */
|
| 765 |
|
|
(*buf)[newlen++] = '@';
|
| 766 |
|
|
(*buf)[newlen] = '\0';
|
| 767 |
|
|
} else {
|
| 768 |
|
|
if (((origin == NULL || origin[0] == '\0') ||
|
| 769 |
|
|
(origin[0] != '.' && origin[1] != '\0' &&
|
| 770 |
|
|
(*buf)[newlen] == '\0')) && (*buf)[newlen - 1] != '.') {
|
| 771 |
|
|
/* No trailing dot. */
|
| 772 |
|
|
if (newlen + 2 > *buflen)
|
| 773 |
|
|
goto enospc; /* No room for ".\0". */
|
| 774 |
|
|
(*buf)[newlen++] = '.';
|
| 775 |
|
|
(*buf)[newlen] = '\0';
|
| 776 |
|
|
}
|
| 777 |
|
|
}
|
| 778 |
|
|
*pp += n;
|
| 779 |
|
|
addlen(newlen, buf, buflen);
|
| 780 |
|
|
**buf = '\0';
|
| 781 |
|
|
return (newlen);
|
| 782 |
|
|
enospc:
|
| 783 |
|
|
__set_errno (ENOSPC);
|
| 784 |
|
|
*buf = save_buf;
|
| 785 |
|
|
*buflen = save_buflen;
|
| 786 |
|
|
return (-1);
|
| 787 |
|
|
}
|
| 788 |
|
|
|
| 789 |
|
|
static void
|
| 790 |
|
|
addlen(size_t len, char **buf, size_t *buflen) {
|
| 791 |
|
|
assert(len <= *buflen);
|
| 792 |
|
|
*buf += len;
|
| 793 |
|
|
*buflen -= len;
|
| 794 |
|
|
}
|
| 795 |
|
|
|
| 796 |
|
|
static int
|
| 797 |
|
|
addstr(const char *src, size_t len, char **buf, size_t *buflen) {
|
| 798 |
|
|
if (len >= *buflen) {
|
| 799 |
|
|
__set_errno (ENOSPC);
|
| 800 |
|
|
return (-1);
|
| 801 |
|
|
}
|
| 802 |
|
|
memcpy(*buf, src, len);
|
| 803 |
|
|
addlen(len, buf, buflen);
|
| 804 |
|
|
**buf = '\0';
|
| 805 |
|
|
return (0);
|
| 806 |
|
|
}
|
| 807 |
|
|
|
| 808 |
|
|
static int
|
| 809 |
|
|
addtab(size_t len, size_t target, int spaced, char **buf, size_t *buflen) {
|
| 810 |
|
|
size_t save_buflen = *buflen;
|
| 811 |
|
|
char *save_buf = *buf;
|
| 812 |
|
|
int t;
|
| 813 |
|
|
|
| 814 |
|
|
if (spaced || len >= target - 1) {
|
| 815 |
|
|
T(addstr(" ", 2, buf, buflen));
|
| 816 |
|
|
spaced = 1;
|
| 817 |
|
|
} else {
|
| 818 |
|
|
for (t = (target - len - 1) / 8; t >= 0; t--)
|
| 819 |
|
|
if (addstr("\t", 1, buf, buflen) < 0) {
|
| 820 |
|
|
*buflen = save_buflen;
|
| 821 |
|
|
*buf = save_buf;
|
| 822 |
|
|
return (-1);
|
| 823 |
|
|
}
|
| 824 |
|
|
spaced = 0;
|
| 825 |
|
|
}
|
| 826 |
|
|
return (spaced);
|
| 827 |
|
|
}
|
