00b67f09dd
Also known as ISC bind. This import adds utilities such as host(1), dig(1), and nslookup(1), as well as many other tools and libraries. Change-Id: I035ca46e64f1965d57019e773f4ff0ef035e4aa3
287 lines
6.7 KiB
C
287 lines
6.7 KiB
C
/* $NetBSD: wire_test.c,v 1.6 2014/12/10 04:37:53 christos Exp $ */
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/*
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* Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
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* Copyright (C) 1999-2001 Internet Software Consortium.
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*
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* Permission to use, copy, modify, and/or 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 ISC DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* Id: wire_test.c,v 1.67 2007/06/19 23:46:59 tbox Exp */
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#include <config.h>
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#include <stdlib.h>
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#include <isc/buffer.h>
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#include <isc/commandline.h>
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#include <isc/mem.h>
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#include <isc/string.h>
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#include <isc/util.h>
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#include <dns/result.h>
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#include "printmsg.h"
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int parseflags = 0;
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isc_mem_t *mctx;
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isc_boolean_t printmemstats = ISC_FALSE;
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isc_boolean_t dorender = ISC_FALSE;
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static void
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process_message(isc_buffer_t *source);
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static inline void
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CHECKRESULT(isc_result_t result, const char *msg) {
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if (result != ISC_R_SUCCESS) {
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printf("%s: %s\n", msg, dns_result_totext(result));
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exit(1);
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}
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}
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static int
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fromhex(char c) {
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if (c >= '0' && c <= '9')
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return (c - '0');
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else if (c >= 'a' && c <= 'f')
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return (c - 'a' + 10);
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else if (c >= 'A' && c <= 'F')
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return (c - 'A' + 10);
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printf("bad input format: %02x\n", c);
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exit(3);
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/* NOTREACHED */
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}
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static void
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usage(void) {
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fprintf(stderr, "wire_test [-p] [-b] [-s] [-r]\n");
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fprintf(stderr, "\t-p\tPreserve order of the records in messages\n");
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fprintf(stderr, "\t-b\tBest-effort parsing (ignore some errors)\n");
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fprintf(stderr, "\t-s\tPrint memory statistics\n");
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fprintf(stderr, "\t-r\tAfter parsing, re-render the message\n");
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fprintf(stderr, "\t-t\tTCP mode - ignore the first 2 bytes\n");
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}
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int
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main(int argc, char *argv[]) {
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char *rp, *wp;
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unsigned char *bp;
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isc_buffer_t source;
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size_t len, i;
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int n;
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FILE *f;
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isc_boolean_t need_close = ISC_FALSE;
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unsigned char b[64 * 1024];
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char s[4000];
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isc_boolean_t tcp = ISC_FALSE;
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int ch;
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mctx = NULL;
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RUNTIME_CHECK(isc_mem_create(0, 0, &mctx) == ISC_R_SUCCESS);
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while ((ch = isc_commandline_parse(argc, argv, "pbsrt")) != -1) {
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switch (ch) {
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case 'p':
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parseflags |= DNS_MESSAGEPARSE_PRESERVEORDER;
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break;
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case 'b':
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parseflags |= DNS_MESSAGEPARSE_BESTEFFORT;
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break;
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case 's':
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printmemstats = ISC_TRUE;
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break;
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case 'r':
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dorender = ISC_TRUE;
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break;
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case 't':
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tcp = ISC_TRUE;
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break;
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default:
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usage();
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exit(1);
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}
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}
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argc -= isc_commandline_index;
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argv += isc_commandline_index;
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if (argc > 1) {
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f = fopen(argv[1], "r");
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if (f == NULL) {
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printf("fopen failed\n");
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exit(1);
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}
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need_close = ISC_TRUE;
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} else
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f = stdin;
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bp = b;
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while (fgets(s, sizeof(s), f) != NULL) {
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rp = s;
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wp = s;
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len = 0;
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while (*rp != '\0') {
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if (*rp == '#')
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break;
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if (*rp != ' ' && *rp != '\t' &&
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*rp != '\r' && *rp != '\n') {
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*wp++ = *rp;
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len++;
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}
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rp++;
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}
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if (len == 0U)
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break;
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if (len % 2 != 0U) {
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printf("bad input format: %lu\n", (unsigned long)len);
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exit(1);
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}
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if (len > sizeof(b) * 2) {
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printf("input too long\n");
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exit(2);
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}
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rp = s;
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for (i = 0; i < len; i += 2) {
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n = fromhex(*rp++);
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n *= 16;
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n += fromhex(*rp++);
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*bp++ = n;
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}
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}
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if (need_close)
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fclose(f);
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if (tcp) {
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unsigned char *p = b;
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while (p < bp) {
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unsigned int len;
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if (p + 2 > bp) {
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printf("premature end of packet\n");
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exit(1);
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}
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len = p[0] << 8 | p[1];
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if (p + 2 + len > bp) {
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printf("premature end of packet\n");
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exit(1);
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}
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isc_buffer_init(&source, p + 2, len);
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isc_buffer_add(&source, len);
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process_message(&source);
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p += 2 + len;
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}
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} else {
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isc_buffer_init(&source, b, sizeof(b));
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isc_buffer_add(&source, bp - b);
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process_message(&source);
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}
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if (printmemstats)
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isc_mem_stats(mctx, stdout);
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isc_mem_destroy(&mctx);
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return (0);
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}
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static void
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process_message(isc_buffer_t *source) {
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dns_message_t *message;
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isc_result_t result;
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int i;
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message = NULL;
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result = dns_message_create(mctx, DNS_MESSAGE_INTENTPARSE, &message);
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CHECKRESULT(result, "dns_message_create failed");
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result = dns_message_parse(message, source, parseflags);
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if (result == DNS_R_RECOVERABLE)
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result = ISC_R_SUCCESS;
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CHECKRESULT(result, "dns_message_parse failed");
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result = printmessage(message);
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CHECKRESULT(result, "printmessage() failed");
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if (printmemstats)
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isc_mem_stats(mctx, stdout);
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if (dorender) {
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unsigned char b2[64 * 1024];
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isc_buffer_t buffer;
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dns_compress_t cctx;
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isc_buffer_init(&buffer, b2, sizeof(b2));
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/*
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* XXXMLG
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* Changing this here is a hack, and should not be done in
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* reasonable application code, ever.
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*/
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message->from_to_wire = DNS_MESSAGE_INTENTRENDER;
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for (i = 0; i < DNS_SECTION_MAX; i++)
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message->counts[i] = 0; /* Another hack XXX */
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result = dns_compress_init(&cctx, -1, mctx);
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CHECKRESULT(result, "dns_compress_init() failed");
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result = dns_message_renderbegin(message, &cctx, &buffer);
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CHECKRESULT(result, "dns_message_renderbegin() failed");
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result = dns_message_rendersection(message,
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DNS_SECTION_QUESTION, 0);
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CHECKRESULT(result,
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"dns_message_rendersection(QUESTION) failed");
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result = dns_message_rendersection(message,
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DNS_SECTION_ANSWER, 0);
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CHECKRESULT(result,
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"dns_message_rendersection(ANSWER) failed");
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result = dns_message_rendersection(message,
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DNS_SECTION_AUTHORITY, 0);
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CHECKRESULT(result,
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"dns_message_rendersection(AUTHORITY) failed");
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result = dns_message_rendersection(message,
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DNS_SECTION_ADDITIONAL, 0);
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CHECKRESULT(result,
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"dns_message_rendersection(ADDITIONAL) failed");
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dns_message_renderend(message);
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dns_compress_invalidate(&cctx);
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message->from_to_wire = DNS_MESSAGE_INTENTPARSE;
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dns_message_destroy(&message);
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printf("Message rendered.\n");
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if (printmemstats)
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isc_mem_stats(mctx, stdout);
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result = dns_message_create(mctx, DNS_MESSAGE_INTENTPARSE,
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&message);
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CHECKRESULT(result, "dns_message_create failed");
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result = dns_message_parse(message, &buffer, parseflags);
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CHECKRESULT(result, "dns_message_parse failed");
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result = printmessage(message);
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CHECKRESULT(result, "printmessage() failed");
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}
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dns_message_destroy(&message);
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}
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