/*
* testcode/unitmsgparse.c - unit test for msg parse routines.
*
* Copyright (c) 2007, NLnet Labs. All rights reserved.
*
* This software is open source.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the NLNET LABS nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/**
* \file
* Calls msg parse unit tests. Exits with code 1 on a failure.
*/
#include "config.h"
#include <sys/time.h>
#include "util/log.h"
#include "testcode/unitmain.h"
#include "util/data/msgparse.h"
#include "util/data/msgreply.h"
#include "util/data/msgencode.h"
#include "util/data/dname.h"
#include "util/alloc.h"
#include "util/regional.h"
#include "util/net_help.h"
#include "testcode/readhex.h"
#include "testcode/testpkts.h"
#include "sldns/sbuffer.h"
#include "sldns/str2wire.h"
#include "sldns/wire2str.h"
/** verbose message parse unit test */
static int vbmp = 0;
/** do not accept formerr */
static int check_formerr_gone = 0;
/** if matching within a section should disregard the order of RRs. */
static int matches_nolocation = 0;
/** see if RRSIGs are properly matched to RRsets. */
static int check_rrsigs = 0;
/** do not check buffer sameness */
static int check_nosameness = 0;
/** see if buffers contain the same packet */
static int
test_buffers(sldns_buffer* pkt, sldns_buffer* out)
{
/* check binary same */
if(sldns_buffer_limit(pkt) == sldns_buffer_limit(out) &&
memcmp(sldns_buffer_begin(pkt), sldns_buffer_begin(out),
sldns_buffer_limit(pkt)) == 0) {
if(vbmp) printf("binary the same (length=%u)\n",
(unsigned)sldns_buffer_limit(pkt));
return 1;
}
if(vbmp) {
size_t sz = 16;
size_t count;
size_t lim = sldns_buffer_limit(out);
if(sldns_buffer_limit(pkt) < lim)
lim = sldns_buffer_limit(pkt);
for(count=0; count<lim; count+=sz) {
size_t rem = sz;
if(lim-count < sz) rem = lim-count;
if(memcmp(sldns_buffer_at(pkt, count),
sldns_buffer_at(out, count), rem) == 0) {
log_info("same %d %d", (int)count, (int)rem);
log_hex("same: ", sldns_buffer_at(pkt, count),
rem);
} else {
log_info("diff %d %d", (int)count, (int)rem);
log_hex("difp: ", sldns_buffer_at(pkt, count),
rem);
log_hex("difo: ", sldns_buffer_at(out, count),
rem);
}
}
}
/* check if it 'means the same' */
if(vbmp) {
char* s1, *s2;
log_buf(0, "orig in hex", pkt);
log_buf(0, "unbound out in hex", out);
printf("\npacket from unbound (%d):\n",
(int)sldns_buffer_limit(out));
s1 = sldns_wire2str_pkt(sldns_buffer_begin(out),
sldns_buffer_limit(out));
printf("%s\n", s1?s1:"null");
free(s1);
printf("\npacket original (%d):\n",
(int)sldns_buffer_limit(pkt));
s2 = sldns_wire2str_pkt(sldns_buffer_begin(pkt),
sldns_buffer_limit(pkt));
printf("%s\n", s2?s2:"null");
free(s2);
printf("\n");
}
/* if it had two EDNS sections, skip comparison */
if(1) {
char* s = sldns_wire2str_pkt(sldns_buffer_begin(pkt),
sldns_buffer_limit(pkt));
char* e1 = strstr(s, "; EDNS:");
if(e1 && strstr(e1+4, "; EDNS:")) {
free(s);
return 0;
}
free(s);
}
/* compare packets */
unit_assert(match_all(sldns_buffer_begin(pkt), sldns_buffer_limit(pkt),
sldns_buffer_begin(out), sldns_buffer_limit(out), 1,
matches_nolocation));
return 0;
}
/** check if unbound formerr equals ldns formerr */
static void
checkformerr(sldns_buffer* pkt)
{
int status = 0;
char* s = sldns_wire2str_pkt(sldns_buffer_begin(pkt),
sldns_buffer_limit(pkt));
if(!s) fatal_exit("out of memory");
if(strstr(s, "Error")) status = 1;
if(strstr(s, "error")) status = 1;
if(status == 0) {
printf("Formerr, but ldns gives packet:\n");
printf("%s\n", s);
free(s);
exit(1);
}
free(s);
unit_assert(status != 0);
}
/** performance test message encoding */
static void
perf_encode(struct query_info* qi, struct reply_info* rep, uint16_t id,
uint16_t flags, sldns_buffer* out, time_t timenow,
struct edns_data* edns)
{
static int num = 0;
int ret;
size_t max = 10000;
size_t i;
struct timeval start, end;
double dt;
struct regional* r2 = regional_create();
if(gettimeofday(&start, NULL) < 0)
fatal_exit("gettimeofday: %s", strerror(errno));
/* encode a couple times */
for(i=0; i<max; i++) {
ret = reply_info_encode(qi, rep, id, flags, out, timenow,
r2, 65535, (int)(edns->bits & EDNS_DO) );
unit_assert(ret != 0); /* udp packets should fit */
attach_edns_record(out, edns);
regional_free_all(r2);
}
if(gettimeofday(&end, NULL) < 0)
fatal_exit("gettimeofday: %s", strerror(errno));
/* time in millisec */
dt = (double)(end.tv_sec - start.tv_sec)*1000. +
((double)end.tv_usec - (double)start.tv_usec)/1000.;
printf("[%d] did %u in %g msec for %f encode/sec size %d\n", num++,
(unsigned)max, dt, (double)max / (dt/1000.),
(int)sldns_buffer_limit(out));
regional_destroy(r2);
}
/** perf test a packet */
static void
perftestpkt(sldns_buffer* pkt, struct alloc_cache* alloc, sldns_buffer* out,
const char* hex)
{
struct query_info qi;
struct reply_info* rep = 0;
int ret;
uint16_t id;
uint16_t flags;
time_t timenow = 0;
struct regional* region = regional_create();
struct edns_data edns;
hex_to_buf(pkt, hex);
memmove(&id, sldns_buffer_begin(pkt), sizeof(id));
if(sldns_buffer_limit(pkt) < 2)
flags = 0;
else memmove(&flags, sldns_buffer_at(pkt, 2), sizeof(flags));
flags = ntohs(flags);
ret = reply_info_parse(pkt, alloc, &qi, &rep, region, &edns);
if(ret != 0) {
char rbuf[16];
sldns_wire2str_rcode_buf(ret, rbuf, sizeof(rbuf));
if(vbmp) printf("parse code %d: %s\n", ret, rbuf);
if(ret == LDNS_RCODE_FORMERR)
checkformerr(pkt);
unit_assert(ret != LDNS_RCODE_SERVFAIL);
} else {
perf_encode(&qi, rep, id, flags, out, timenow, &edns);
}
query_info_clear(&qi);
reply_info_parsedelete(rep, alloc);
regional_destroy(region);
}
/** print packed rrset */
static void
print_rrset(struct ub_packed_rrset_key* rrset)
{
struct packed_rrset_data* d = (struct packed_rrset_data*)rrset->
entry.data;
char buf[65535];
size_t i;
for(i=0; i<d->count+d->rrsig_count; i++) {
if(!packed_rr_to_string(rrset, i, 0, buf, sizeof(buf)))
printf("failedtoconvert %d\n", (int)i);
else
printf("%s\n", buf);
}
}
/** debug print a packet that failed */
static void
print_packet_rrsets(struct query_info* qinfo, struct reply_info* rep)
{
size_t i;
log_query_info(0, "failed query", qinfo);
printf(";; ANSWER SECTION (%d rrsets)\n", (int)rep->an_numrrsets);
for(i=0; i<rep->an_numrrsets; i++) {
printf("; rrset %d\n", (int)i);
print_rrset(rep->rrsets[i]);
}
printf(";; AUTHORITY SECTION (%d rrsets)\n", (int)rep->ns_numrrsets);
for(i=rep->an_numrrsets; i<rep->an_numrrsets+rep->ns_numrrsets; i++) {
printf("; rrset %d\n", (int)i);
print_rrset(rep->rrsets[i]);
}
printf(";; ADDITIONAL SECTION (%d rrsets)\n", (int)rep->ar_numrrsets);
for(i=rep->an_numrrsets+rep->ns_numrrsets; i<rep->rrset_count; i++) {
printf("; rrset %d\n", (int)i);
print_rrset(rep->rrsets[i]);
}
printf(";; packet end\n");
}
/** check that there is no data element that matches the RRSIG */
static int
no_data_for_rrsig(struct reply_info* rep, struct ub_packed_rrset_key* rrsig)
{
size_t i;
for(i=0; i<rep->rrset_count; i++) {
if(ntohs(rep->rrsets[i]->rk.type) == LDNS_RR_TYPE_RRSIG)
continue;
if(query_dname_compare(rep->rrsets[i]->rk.dname,
rrsig->rk.dname) == 0)
/* only name is compared right now */
return 0;
}
return 1;
}
/** check RRSIGs in packet */
static void
check_the_rrsigs(struct query_info* qinfo, struct reply_info* rep)
{
/* every RRSIG must be matched to an RRset */
size_t i;
for(i=0; i<rep->rrset_count; i++) {
struct ub_packed_rrset_key* s = rep->rrsets[i];
if(ntohs(s->rk.type) == LDNS_RR_TYPE_RRSIG) {
/* see if really a problem, i.e. is there a data
* element. */
if(no_data_for_rrsig(rep, rep->rrsets[i]))
continue;
log_dns_msg("rrsig failed for packet", qinfo, rep);
print_packet_rrsets(qinfo, rep);
printf("failed rrset is nr %d\n", (int)i);
unit_assert(0);
}
}
}
/** test a packet */
static void
testpkt(sldns_buffer* pkt, struct alloc_cache* alloc, sldns_buffer* out,
const char* hex)
{
struct query_info qi;
struct reply_info* rep = 0;
int ret;
uint16_t id;
uint16_t flags;
uint32_t timenow = 0;
struct regional* region = regional_create();
struct edns_data edns;
hex_to_buf(pkt, hex);
memmove(&id, sldns_buffer_begin(pkt), sizeof(id));
if(sldns_buffer_limit(pkt) < 2)
flags = 0;
else memmove(&flags, sldns_buffer_at(pkt, 2), sizeof(flags));
flags = ntohs(flags);
ret = reply_info_parse(pkt, alloc, &qi, &rep, region, &edns);
if(ret != 0) {
char rbuf[16];
sldns_wire2str_rcode_buf(ret, rbuf, sizeof(rbuf));
if(vbmp) printf("parse code %d: %s\n", ret, rbuf);
if(ret == LDNS_RCODE_FORMERR) {
unit_assert(!check_formerr_gone);
checkformerr(pkt);
}
unit_assert(ret != LDNS_RCODE_SERVFAIL);
} else if(!check_formerr_gone) {
const size_t lim = 512;
ret = reply_info_encode(&qi, rep, id, flags, out, timenow,
region, 65535, (int)(edns.bits & EDNS_DO) );
unit_assert(ret != 0); /* udp packets should fit */
attach_edns_record(out, &edns);
if(vbmp) printf("inlen %u outlen %u\n",
(unsigned)sldns_buffer_limit(pkt),
(unsigned)sldns_buffer_limit(out));
if(!check_nosameness)
test_buffers(pkt, out);
if(check_rrsigs)
check_the_rrsigs(&qi, rep);
if(sldns_buffer_limit(out) > lim) {
ret = reply_info_encode(&qi, rep, id, flags, out,
timenow, region,
lim - calc_edns_field_size(&edns),
(int)(edns.bits & EDNS_DO));
unit_assert(ret != 0); /* should fit, but with TC */
attach_edns_record(out, &edns);
if( LDNS_QDCOUNT(sldns_buffer_begin(out)) !=
LDNS_QDCOUNT(sldns_buffer_begin(pkt)) ||
LDNS_ANCOUNT(sldns_buffer_begin(out)) !=
LDNS_ANCOUNT(sldns_buffer_begin(pkt)) ||
LDNS_NSCOUNT(sldns_buffer_begin(out)) !=
LDNS_NSCOUNT(sldns_buffer_begin(pkt)))
unit_assert(
LDNS_TC_WIRE(sldns_buffer_begin(out)));
/* must set TC bit if shortened */
unit_assert(sldns_buffer_limit(out) <= lim);
}
}
query_info_clear(&qi);
reply_info_parsedelete(rep, alloc);
regional_destroy(region);
}
/** simple test of parsing */
static void
simpletest(sldns_buffer* pkt, struct alloc_cache* alloc, sldns_buffer* out)
{
/* a root query drill -q - */
testpkt(pkt, alloc, out,
" c5 40 01 00 00 01 00 00 00 00 00 00 00 00 02 00 01 ");
/* very small packet */
testpkt(pkt, alloc, out,
"; 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19\n"
";-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --\n"
"74 0c 85 83 00 01 00 00 00 01 00 00 03 62 6c 61 09 6e 6c 6e ; 1- 20\n"
"65 74 6c 61 62 73 02 6e 6c 00 00 0f 00 01 09 6e 6c 6e 65 74 ; 21- 40\n"
"6c 61 62 73 02 6e 6c 00 00 06 00 01 00 00 46 50 00 40 04 6f ; 41- 60\n"
"70 65 6e 09 6e 6c 6e 65 74 6c 61 62 73 02 6e 6c 00 0a 68 6f ; 61- 80\n"
"73 74 6d 61 73 74 65 72 09 6e 6c 6e 65 74 6c 61 62 73 02 6e ; 81- 100\n"
"6c 00 77 a1 02 58 00 00 70 80 00 00 1c 20 00 09 3a 80 00 00 ; 101- 120\n"
"46 50\n");
/* a root reply drill -w - */
testpkt(pkt, alloc, out,
" ; 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19\n"
" ;-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --\n"
" 97 3f 81 80 00 01 00 0d 00 00 00 02 00 00 02 00 01 00 00 02 ; 1- 20\n"
" 00 01 00 06 6d 38 00 14 01 49 0c 52 4f 4f 54 2d 53 45 52 56 ; 21- 40\n"
" 45 52 53 03 4e 45 54 00 00 00 02 00 01 00 06 6d 38 00 14 01 ; 41- 60\n"
" 4a 0c 52 4f 4f 54 2d 53 45 52 56 45 52 53 03 4e 45 54 00 00 ; 61- 80\n"
" 00 02 00 01 00 06 6d 38 00 14 01 4b 0c 52 4f 4f 54 2d 53 45 ; 81- 100\n"
" 52 56 45 52 53 03 4e 45 54 00 00 00 02 00 01 00 06 6d 38 00 ; 101- 120\n"
" 14 01 4c 0c 52 4f 4f 54 2d 53 45 52 56 45 52 53 03 4e 45 54 ; 121- 140\n"
" 00 00 00 02 00 01 00 06 6d 38 00 14 01 4d 0c 52 4f 4f 54 2d ; 141- 160\n"
" 53 45 52 56 45 52 53 03 4e 45 54 00 00 00 02 00 01 00 06 6d ; 161- 180\n"
" 38 00 14 01 41 0c 52 4f 4f 54 2d 53 45 52 56 45 52 53 03 4e ; 181- 200\n"
" 45 54 00 00 00 02 00 01 00 06 6d 38 00 14 01 42 0c 52 4f 4f ; 201- 220\n"
" 54 2d 53 45 52 56 45 52 53 03 4e 45 54 00 00 00 02 00 01 00 ; 221- 240\n"
" 06 6d 38 00 14 01 43 0c 52 4f 4f 54 2d 53 45 52 56 45 52 53 ; 241- 260\n"
" 03 4e 45 54 00 00 00 02 00 01 00 06 6d 38 00 14 01 44 0c 52 ; 261- 280\n"
" 4f 4f 54 2d 53 45 52 56 45 52 53 03 4e 45 54 00 00 00 02 00 ; 281- 300\n"
" 01 00 06 6d 38 00 14 01 45 0c 52 4f 4f 54 2d 53 45 52 56 45 ; 301- 320\n"
" 52 53 03 4e 45 54 00 00 00 02 00 01 00 06 6d 38 00 14 01 46 ; 321- 340\n"
" 0c 52 4f 4f 54 2d 53 45 52 56 45 52 53 03 4e 45 54 00 00 00 ; 341- 360\n"
" 02 00 01 00 06 6d 38 00 14 01 47 0c 52 4f 4f 54 2d 53 45 52 ; 361- 380\n"
" 56 45 52 53 03 4e 45 54 00 00 00 02 00 01 00 06 6d 38 00 14 ; 381- 400\n"
" 01 48 0c 52 4f 4f 54 2d 53 45 52 56 45 52 53 03 4e 45 54 00 ; 401- 420\n"
" 01 41 0c 52 4f 4f 54 2d 53 45 52 56 45 52 53 03 4e 45 54 00 ; 421- 440\n"
" 00 01 00 01 00 02 64 b9 00 04 c6 29 00 04 01 4a 0c 52 4f 4f ; 441- 460\n"
" 54 2d 53 45 52 56 45 52 53 03 4e 45 54 00 00 01 00 01 00 02 ; 461- 480\n"
" 64 b9 00 04 c0 3a 80 1e ");
/* root delegation from unbound trace with new AAAA glue */
perftestpkt(pkt, alloc, out,
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
"00000000803F0235C0B3001C00010007E9000010200105030C2700000000000000020030C0C2001C00010007E9000010200107FD000000000000000000000001C0E0001C00010007E900001020010DC30000000000000000000000350000291000000000000000"
);
}
/** simple test of parsing, pcat file */
static void
testfromfile(sldns_buffer* pkt, struct alloc_cache* alloc, sldns_buffer* out,
const char* fname)
{
FILE* in = fopen(fname, "r");
char buf[102400];
int no=0;
if(!in) {
perror("fname");
return;
}
while(fgets(buf, (int)sizeof(buf), in)) {
if(buf[0] == ';') /* comment */
continue;
if(strlen(buf) < 10) /* skip pcat line numbers. */
continue;
if(vbmp) {
printf("test no %d: %s", no, buf);
fflush(stdout);
}
testpkt(pkt, alloc, out, buf);
no++;
}
fclose(in);
}
/** simple test of parsing, drill file */
static void
testfromdrillfile(sldns_buffer* pkt, struct alloc_cache* alloc,
sldns_buffer* out, const char* fname)
{
/* ;-- is used to indicate a new message */
FILE* in = fopen(fname, "r");
char buf[102400];
char* np = buf;
buf[0]=0;
if(!in) {
perror("fname");
return;
}
while(fgets(np, (int)sizeof(buf) - (np-buf), in)) {
if(strncmp(np, ";--", 3) == 0) {
/* new entry */
/* test previous */
if(np != buf)
testpkt(pkt, alloc, out, buf);
/* set for new entry */
np = buf;
buf[0]=0;
continue;
}
if(np[0] == ';') /* comment */
continue;
np = &np[strlen(np)];
}
testpkt(pkt, alloc, out, buf);
fclose(in);
}
void msgparse_test(void)
{
time_t origttl = MAX_NEG_TTL;
sldns_buffer* pkt = sldns_buffer_new(65553);
sldns_buffer* out = sldns_buffer_new(65553);
struct alloc_cache super_a, alloc;
MAX_NEG_TTL = 86400;
/* init */
alloc_init(&super_a, NULL, 0);
alloc_init(&alloc, &super_a, 2);
unit_show_feature("message parse");
simpletest(pkt, &alloc, out);
/* plain hex dumps, like pcat */
testfromfile(pkt, &alloc, out, "testdata/test_packets.1");
testfromfile(pkt, &alloc, out, "testdata/test_packets.2");
testfromfile(pkt, &alloc, out, "testdata/test_packets.3");
/* like from drill -w - */
testfromdrillfile(pkt, &alloc, out, "testdata/test_packets.4");
testfromdrillfile(pkt, &alloc, out, "testdata/test_packets.5");
matches_nolocation = 1; /* RR order not important for the next test */
testfromdrillfile(pkt, &alloc, out, "testdata/test_packets.6");
check_rrsigs = 1;
testfromdrillfile(pkt, &alloc, out, "testdata/test_packets.7");
check_rrsigs = 0;
matches_nolocation = 0;
check_formerr_gone = 1;
testfromdrillfile(pkt, &alloc, out, "testdata/test_packets.8");
check_formerr_gone = 0;
check_rrsigs = 1;
check_nosameness = 1;
testfromdrillfile(pkt, &alloc, out, "testdata/test_packets.9");
check_nosameness = 0;
check_rrsigs = 0;
/* cleanup */
alloc_clear(&alloc);
alloc_clear(&super_a);
sldns_buffer_free(pkt);
sldns_buffer_free(out);
MAX_NEG_TTL = origttl;
}
