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|
/* $NetBSD: named-rrchecker.c,v 1.1.1.3 2014/12/10 03:34:31 christos Exp $ */
/*
* Copyright (C) 2013 Internet Systems Consortium, Inc. ("ISC")
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#include <config.h>
#include <stdlib.h>
#include <isc/buffer.h>
#include <isc/commandline.h>
#include <isc/lex.h>
#include <isc/mem.h>
#include <isc/string.h>
#include <isc/util.h>
#include <dns/fixedname.h>
#include <dns/name.h>
#include <dns/rdata.h>
#include <dns/rdataclass.h>
#include <dns/rdatatype.h>
#include <dns/result.h>
static isc_mem_t *mctx;
static isc_lex_t *lex;
static isc_lexspecials_t specials;
static void
usage(void) {
fprintf(stderr, "usage: named-rrchecker [-o origin] [-hpCPT]\n");
fprintf(stderr, "\t-h: print this help message\n");
fprintf(stderr, "\t-o origin: set origin to be used when interpeting the record\n");
fprintf(stderr, "\t-p: print the record in cannonical format\n");
fprintf(stderr, "\t-C: list the supported class names\n");
fprintf(stderr, "\t-T: list the supported standard type names\n");
fprintf(stderr, "\t-P: list the supported private type names\n");
}
int
main(int argc, char *argv[]) {
isc_token_t token;
isc_result_t result;
int c;
unsigned int options = 0;
dns_rdatatype_t rdtype;
dns_rdataclass_t rdclass;
char text[256*1024];
char data[64*1024];
isc_buffer_t tbuf;
isc_buffer_t dbuf;
dns_rdata_t rdata = DNS_RDATA_INIT;
isc_boolean_t doexit = ISC_FALSE;
isc_boolean_t once = ISC_FALSE;
isc_boolean_t print = ISC_FALSE;
isc_boolean_t unknown = ISC_FALSE;
unsigned int t;
char *origin = NULL;
dns_fixedname_t fixed;
dns_name_t *name = NULL;
while ((c = isc_commandline_parse(argc, argv, "ho:puCPT")) != -1) {
switch (c) {
case '?':
case 'h':
if (isc_commandline_option != '?' &&
isc_commandline_option != 'h')
fprintf(stderr, "%s: invalid argument -%c\n",
argv[0], isc_commandline_option);
usage();
exit(1);
case 'o':
origin = isc_commandline_argument;
break;
case 'p':
print = ISC_TRUE;
break;
case 'u':
unknown = ISC_TRUE;
break;
case 'C':
for (t = 1; t <= 0xfeffu; t++) {
if (dns_rdataclass_ismeta(t))
continue;
dns_rdataclass_format(t, text, sizeof(text));
if (strncmp(text, "CLASS", 4) != 0)
fprintf(stdout, "%s\n", text);
}
exit(0);
case 'P':
for (t = 0xff00; t <= 0xfffeu; t++) {
if (dns_rdatatype_ismeta(t))
continue;
dns_rdatatype_format(t, text, sizeof(text));
if (strncmp(text, "TYPE", 4) != 0)
fprintf(stdout, "%s\n", text);
}
doexit = ISC_TRUE;
break;
case 'T':
for (t = 1; t <= 0xfeffu; t++) {
if (dns_rdatatype_ismeta(t))
continue;
dns_rdatatype_format(t, text, sizeof(text));
if (strncmp(text, "TYPE", 4) != 0)
fprintf(stdout, "%s\n", text);
}
doexit = ISC_TRUE;
break;
}
}
if (doexit)
exit(0);
RUNTIME_CHECK(isc_mem_create(0, 0, &mctx) == ISC_R_SUCCESS);
RUNTIME_CHECK(isc_lex_create(mctx, 256, &lex) == ISC_R_SUCCESS);
/*
* Set up to lex DNS master file.
*/
specials['('] = 1;
specials[')'] = 1;
specials['"'] = 1;
isc_lex_setspecials(lex, specials);
options = ISC_LEXOPT_EOL;
isc_lex_setcomments(lex, ISC_LEXCOMMENT_DNSMASTERFILE);
RUNTIME_CHECK(isc_lex_openstream(lex, stdin) == ISC_R_SUCCESS);
if (origin != NULL) {
dns_fixedname_init(&fixed);
name = dns_fixedname_name(&fixed);
result = dns_name_fromstring(name, origin, 0, NULL);
if (result != ISC_R_SUCCESS) {
fprintf(stderr, "dns_name_fromstring: %s\n",
dns_result_totext(result));
fflush(stderr);
exit(1);
}
}
while ((result = isc_lex_gettoken(lex, options | ISC_LEXOPT_NUMBER,
&token)) == ISC_R_SUCCESS) {
if (token.type == isc_tokentype_eof)
break;
if (token.type == isc_tokentype_eol)
continue;
if (once) {
fprintf(stderr, "extra data\n");
exit(1);
}
/*
* Get class.
*/
if (token.type == isc_tokentype_number) {
rdclass = (dns_rdataclass_t) token.value.as_ulong;
if (token.value.as_ulong > 0xffffu) {
fprintf(stderr, "class value too big %lu\n",
token.value.as_ulong);
fflush(stderr);
exit(1);
}
if (dns_rdataclass_ismeta(rdclass)) {
fprintf(stderr, "class %lu is a meta value\n",
token.value.as_ulong);
fflush(stderr);
exit(1);
}
} else if (token.type == isc_tokentype_string) {
result = dns_rdataclass_fromtext(&rdclass,
&token.value.as_textregion);
if (result != ISC_R_SUCCESS) {
fprintf(stderr, "dns_rdataclass_fromtext: %s\n",
dns_result_totext(result));
fflush(stderr);
exit(1);
}
if (dns_rdataclass_ismeta(rdclass)) {
fprintf(stderr,
"class %.*s(%d) is a meta value\n",
(int)token.value.as_textregion.length,
token.value.as_textregion.base, rdclass);
fflush(stderr);
exit(1);
}
} else {
fprintf(stderr, "unexpected token %u\n", token.type);
exit(1);
}
result = isc_lex_gettoken(lex, options | ISC_LEXOPT_NUMBER,
&token);
if (result != ISC_R_SUCCESS)
break;
if (token.type == isc_tokentype_eol)
continue;
if (token.type == isc_tokentype_eof)
break;
/*
* Get type.
*/
if (token.type == isc_tokentype_number) {
rdtype = (dns_rdatatype_t) token.value.as_ulong;
if (token.value.as_ulong > 0xffffu) {
fprintf(stderr, "type value too big %lu\n",
token.value.as_ulong);
exit(1);
}
if (dns_rdatatype_ismeta(rdtype)) {
fprintf(stderr, "type %lu is a meta value\n",
token.value.as_ulong);
fflush(stderr);
exit(1);
}
} else if (token.type == isc_tokentype_string) {
result = dns_rdatatype_fromtext(&rdtype,
&token.value.as_textregion);
if (result != ISC_R_SUCCESS) {
fprintf(stdout, "dns_rdatatype_fromtext: %s\n",
dns_result_totext(result));
fflush(stdout);
exit(1);
}
if (dns_rdatatype_ismeta(rdtype)) {
fprintf(stderr,
"type %.*s(%d) is a meta value\n",
(int)token.value.as_textregion.length,
token.value.as_textregion.base, rdtype);
fflush(stderr);
exit(1);
}
} else {
fprintf(stderr, "unexpected token %u\n", token.type);
exit(1);
}
isc_buffer_init(&dbuf, data, sizeof(data));
result = dns_rdata_fromtext(&rdata, rdclass, rdtype, lex,
name, 0, mctx, &dbuf, NULL);
if (result != ISC_R_SUCCESS) {
fprintf(stderr, "dns_rdata_fromtext: %s\n",
dns_result_totext(result));
fflush(stderr);
exit(1);
}
once = ISC_TRUE;
}
if (result != ISC_R_EOF) {
fprintf(stderr, "eof not found\n");
exit(1);
}
if (!once) {
fprintf(stderr, "no records found\n");
exit(1);
}
if (print) {
isc_buffer_init(&tbuf, text, sizeof(text));
result = dns_rdataclass_totext(rdclass, &tbuf);
if (result != ISC_R_SUCCESS) {
fprintf(stderr, "dns_rdataclass_totext: %s\n",
dns_result_totext(result));
fflush(stderr);
exit(1);
}
isc_buffer_putstr(&tbuf, "\t");
result = dns_rdatatype_totext(rdtype, &tbuf);
if (result != ISC_R_SUCCESS) {
fprintf(stderr, "dns_rdatatype_totext: %s\n",
dns_result_totext(result));
fflush(stderr);
exit(1);
}
isc_buffer_putstr(&tbuf, "\t");
result = dns_rdata_totext(&rdata, NULL, &tbuf);
if (result != ISC_R_SUCCESS)
fprintf(stderr, "dns_rdata_totext: %s\n",
dns_result_totext(result));
else
fprintf(stdout, "%.*s\n", (int)tbuf.used,
(char*)tbuf.base);
fflush(stdout);
}
if (unknown) {
fprintf(stdout, "CLASS%u\tTYPE%u\t\\# %u", rdclass, rdtype,
rdata.length);
if (rdata.length != 0) {
unsigned int i;
fprintf(stdout, " ");
for (i = 0; i < rdata.length; i++)
fprintf(stdout, "%02x", rdata.data[i]);
}
fprintf(stdout, "\n");
}
isc_lex_close(lex);
isc_lex_destroy(&lex);
isc_mem_destroy(&mctx);
return (0);
}
|
