mirror of
https://git.wownero.com/wownero/wownero.git
synced 2024-08-15 01:03:23 +00:00
These files were pulled from the 1.6.3 release tarball. This new version builds against OpenSSL version 1.1 which will be the default in the new Debian Stable which is due to be released RealSoonNow (tm).
899 lines
24 KiB
C
899 lines
24 KiB
C
/*
|
|
* daemon/cachedump.c - dump the cache to text format.
|
|
*
|
|
* Copyright (c) 2008, 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
|
|
*
|
|
* This file contains functions to read and write the cache(s)
|
|
* to text format.
|
|
*/
|
|
#include "config.h"
|
|
#include <openssl/ssl.h>
|
|
#include "daemon/cachedump.h"
|
|
#include "daemon/remote.h"
|
|
#include "daemon/worker.h"
|
|
#include "services/cache/rrset.h"
|
|
#include "services/cache/dns.h"
|
|
#include "services/cache/infra.h"
|
|
#include "util/data/msgreply.h"
|
|
#include "util/regional.h"
|
|
#include "util/net_help.h"
|
|
#include "util/data/dname.h"
|
|
#include "iterator/iterator.h"
|
|
#include "iterator/iter_delegpt.h"
|
|
#include "iterator/iter_utils.h"
|
|
#include "iterator/iter_fwd.h"
|
|
#include "iterator/iter_hints.h"
|
|
#include "sldns/sbuffer.h"
|
|
#include "sldns/wire2str.h"
|
|
#include "sldns/str2wire.h"
|
|
|
|
/** dump one rrset zonefile line */
|
|
static int
|
|
dump_rrset_line(SSL* ssl, struct ub_packed_rrset_key* k, time_t now, size_t i)
|
|
{
|
|
char s[65535];
|
|
if(!packed_rr_to_string(k, i, now, s, sizeof(s))) {
|
|
return ssl_printf(ssl, "BADRR\n");
|
|
}
|
|
return ssl_printf(ssl, "%s", s);
|
|
}
|
|
|
|
/** dump rrset key and data info */
|
|
static int
|
|
dump_rrset(SSL* ssl, struct ub_packed_rrset_key* k,
|
|
struct packed_rrset_data* d, time_t now)
|
|
{
|
|
size_t i;
|
|
/* rd lock held by caller */
|
|
if(!k || !d) return 1;
|
|
if(d->ttl < now) return 1; /* expired */
|
|
|
|
/* meta line */
|
|
if(!ssl_printf(ssl, ";rrset%s " ARG_LL "d %u %u %d %d\n",
|
|
(k->rk.flags & PACKED_RRSET_NSEC_AT_APEX)?" nsec_apex":"",
|
|
(long long)(d->ttl - now),
|
|
(unsigned)d->count, (unsigned)d->rrsig_count,
|
|
(int)d->trust, (int)d->security
|
|
))
|
|
return 0;
|
|
for(i=0; i<d->count + d->rrsig_count; i++) {
|
|
if(!dump_rrset_line(ssl, k, now, i))
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/** dump lruhash rrset cache */
|
|
static int
|
|
dump_rrset_lruhash(SSL* ssl, struct lruhash* h, time_t now)
|
|
{
|
|
struct lruhash_entry* e;
|
|
/* lruhash already locked by caller */
|
|
/* walk in order of lru; best first */
|
|
for(e=h->lru_start; e; e = e->lru_next) {
|
|
lock_rw_rdlock(&e->lock);
|
|
if(!dump_rrset(ssl, (struct ub_packed_rrset_key*)e->key,
|
|
(struct packed_rrset_data*)e->data, now)) {
|
|
lock_rw_unlock(&e->lock);
|
|
return 0;
|
|
}
|
|
lock_rw_unlock(&e->lock);
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/** dump rrset cache */
|
|
static int
|
|
dump_rrset_cache(SSL* ssl, struct worker* worker)
|
|
{
|
|
struct rrset_cache* r = worker->env.rrset_cache;
|
|
size_t slab;
|
|
if(!ssl_printf(ssl, "START_RRSET_CACHE\n")) return 0;
|
|
for(slab=0; slab<r->table.size; slab++) {
|
|
lock_quick_lock(&r->table.array[slab]->lock);
|
|
if(!dump_rrset_lruhash(ssl, r->table.array[slab],
|
|
*worker->env.now)) {
|
|
lock_quick_unlock(&r->table.array[slab]->lock);
|
|
return 0;
|
|
}
|
|
lock_quick_unlock(&r->table.array[slab]->lock);
|
|
}
|
|
return ssl_printf(ssl, "END_RRSET_CACHE\n");
|
|
}
|
|
|
|
/** dump message to rrset reference */
|
|
static int
|
|
dump_msg_ref(SSL* ssl, struct ub_packed_rrset_key* k)
|
|
{
|
|
char* nm, *tp, *cl;
|
|
nm = sldns_wire2str_dname(k->rk.dname, k->rk.dname_len);
|
|
tp = sldns_wire2str_type(ntohs(k->rk.type));
|
|
cl = sldns_wire2str_class(ntohs(k->rk.rrset_class));
|
|
if(!nm || !cl || !tp) {
|
|
free(nm);
|
|
free(tp);
|
|
free(cl);
|
|
return ssl_printf(ssl, "BADREF\n");
|
|
}
|
|
if(!ssl_printf(ssl, "%s %s %s %d\n", nm, cl, tp, (int)k->rk.flags)) {
|
|
free(nm);
|
|
free(tp);
|
|
free(cl);
|
|
return 0;
|
|
}
|
|
free(nm);
|
|
free(tp);
|
|
free(cl);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/** dump message entry */
|
|
static int
|
|
dump_msg(SSL* ssl, struct query_info* k, struct reply_info* d,
|
|
time_t now)
|
|
{
|
|
size_t i;
|
|
char* nm, *tp, *cl;
|
|
if(!k || !d) return 1;
|
|
if(d->ttl < now) return 1; /* expired */
|
|
|
|
nm = sldns_wire2str_dname(k->qname, k->qname_len);
|
|
tp = sldns_wire2str_type(k->qtype);
|
|
cl = sldns_wire2str_class(k->qclass);
|
|
if(!nm || !tp || !cl) {
|
|
free(nm);
|
|
free(tp);
|
|
free(cl);
|
|
return 1; /* skip this entry */
|
|
}
|
|
if(!rrset_array_lock(d->ref, d->rrset_count, now)) {
|
|
/* rrsets have timed out or do not exist */
|
|
free(nm);
|
|
free(tp);
|
|
free(cl);
|
|
return 1; /* skip this entry */
|
|
}
|
|
|
|
/* meta line */
|
|
if(!ssl_printf(ssl, "msg %s %s %s %d %d " ARG_LL "d %d %u %u %u\n",
|
|
nm, cl, tp,
|
|
(int)d->flags, (int)d->qdcount,
|
|
(long long)(d->ttl-now), (int)d->security,
|
|
(unsigned)d->an_numrrsets,
|
|
(unsigned)d->ns_numrrsets,
|
|
(unsigned)d->ar_numrrsets)) {
|
|
free(nm);
|
|
free(tp);
|
|
free(cl);
|
|
rrset_array_unlock(d->ref, d->rrset_count);
|
|
return 0;
|
|
}
|
|
free(nm);
|
|
free(tp);
|
|
free(cl);
|
|
|
|
for(i=0; i<d->rrset_count; i++) {
|
|
if(!dump_msg_ref(ssl, d->rrsets[i])) {
|
|
rrset_array_unlock(d->ref, d->rrset_count);
|
|
return 0;
|
|
}
|
|
}
|
|
rrset_array_unlock(d->ref, d->rrset_count);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/** copy msg to worker pad */
|
|
static int
|
|
copy_msg(struct regional* region, struct lruhash_entry* e,
|
|
struct query_info** k, struct reply_info** d)
|
|
{
|
|
struct reply_info* rep = (struct reply_info*)e->data;
|
|
if(rep->rrset_count > RR_COUNT_MAX)
|
|
return 0; /* to protect against integer overflow */
|
|
*d = (struct reply_info*)regional_alloc_init(region, e->data,
|
|
sizeof(struct reply_info) +
|
|
sizeof(struct rrset_ref) * (rep->rrset_count-1) +
|
|
sizeof(struct ub_packed_rrset_key*) * rep->rrset_count);
|
|
if(!*d)
|
|
return 0;
|
|
(*d)->rrsets = (struct ub_packed_rrset_key**)(void *)(
|
|
(uint8_t*)(&((*d)->ref[0])) +
|
|
sizeof(struct rrset_ref) * rep->rrset_count);
|
|
*k = (struct query_info*)regional_alloc_init(region,
|
|
e->key, sizeof(struct query_info));
|
|
if(!*k)
|
|
return 0;
|
|
(*k)->qname = regional_alloc_init(region,
|
|
(*k)->qname, (*k)->qname_len);
|
|
return (*k)->qname != NULL;
|
|
}
|
|
|
|
/** dump lruhash msg cache */
|
|
static int
|
|
dump_msg_lruhash(SSL* ssl, struct worker* worker, struct lruhash* h)
|
|
{
|
|
struct lruhash_entry* e;
|
|
struct query_info* k;
|
|
struct reply_info* d;
|
|
|
|
/* lruhash already locked by caller */
|
|
/* walk in order of lru; best first */
|
|
for(e=h->lru_start; e; e = e->lru_next) {
|
|
regional_free_all(worker->scratchpad);
|
|
lock_rw_rdlock(&e->lock);
|
|
/* make copy of rrset in worker buffer */
|
|
if(!copy_msg(worker->scratchpad, e, &k, &d)) {
|
|
lock_rw_unlock(&e->lock);
|
|
return 0;
|
|
}
|
|
lock_rw_unlock(&e->lock);
|
|
/* release lock so we can lookup the rrset references
|
|
* in the rrset cache */
|
|
if(!dump_msg(ssl, k, d, *worker->env.now)) {
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/** dump msg cache */
|
|
static int
|
|
dump_msg_cache(SSL* ssl, struct worker* worker)
|
|
{
|
|
struct slabhash* sh = worker->env.msg_cache;
|
|
size_t slab;
|
|
if(!ssl_printf(ssl, "START_MSG_CACHE\n")) return 0;
|
|
for(slab=0; slab<sh->size; slab++) {
|
|
lock_quick_lock(&sh->array[slab]->lock);
|
|
if(!dump_msg_lruhash(ssl, worker, sh->array[slab])) {
|
|
lock_quick_unlock(&sh->array[slab]->lock);
|
|
return 0;
|
|
}
|
|
lock_quick_unlock(&sh->array[slab]->lock);
|
|
}
|
|
return ssl_printf(ssl, "END_MSG_CACHE\n");
|
|
}
|
|
|
|
int
|
|
dump_cache(SSL* ssl, struct worker* worker)
|
|
{
|
|
if(!dump_rrset_cache(ssl, worker))
|
|
return 0;
|
|
if(!dump_msg_cache(ssl, worker))
|
|
return 0;
|
|
return ssl_printf(ssl, "EOF\n");
|
|
}
|
|
|
|
/** read a line from ssl into buffer */
|
|
static int
|
|
ssl_read_buf(SSL* ssl, sldns_buffer* buf)
|
|
{
|
|
return ssl_read_line(ssl, (char*)sldns_buffer_begin(buf),
|
|
sldns_buffer_capacity(buf));
|
|
}
|
|
|
|
/** check fixed text on line */
|
|
static int
|
|
read_fixed(SSL* ssl, sldns_buffer* buf, const char* str)
|
|
{
|
|
if(!ssl_read_buf(ssl, buf)) return 0;
|
|
return (strcmp((char*)sldns_buffer_begin(buf), str) == 0);
|
|
}
|
|
|
|
/** load an RR into rrset */
|
|
static int
|
|
load_rr(SSL* ssl, sldns_buffer* buf, struct regional* region,
|
|
struct ub_packed_rrset_key* rk, struct packed_rrset_data* d,
|
|
unsigned int i, int is_rrsig, int* go_on, time_t now)
|
|
{
|
|
uint8_t rr[LDNS_RR_BUF_SIZE];
|
|
size_t rr_len = sizeof(rr), dname_len = 0;
|
|
int status;
|
|
|
|
/* read the line */
|
|
if(!ssl_read_buf(ssl, buf))
|
|
return 0;
|
|
if(strncmp((char*)sldns_buffer_begin(buf), "BADRR\n", 6) == 0) {
|
|
*go_on = 0;
|
|
return 1;
|
|
}
|
|
status = sldns_str2wire_rr_buf((char*)sldns_buffer_begin(buf), rr,
|
|
&rr_len, &dname_len, 3600, NULL, 0, NULL, 0);
|
|
if(status != 0) {
|
|
log_warn("error cannot parse rr: %s: %s",
|
|
sldns_get_errorstr_parse(status),
|
|
(char*)sldns_buffer_begin(buf));
|
|
return 0;
|
|
}
|
|
if(is_rrsig && sldns_wirerr_get_type(rr, rr_len, dname_len)
|
|
!= LDNS_RR_TYPE_RRSIG) {
|
|
log_warn("error expected rrsig but got %s",
|
|
(char*)sldns_buffer_begin(buf));
|
|
return 0;
|
|
}
|
|
|
|
/* convert ldns rr into packed_rr */
|
|
d->rr_ttl[i] = (time_t)sldns_wirerr_get_ttl(rr, rr_len, dname_len) + now;
|
|
sldns_buffer_clear(buf);
|
|
d->rr_len[i] = sldns_wirerr_get_rdatalen(rr, rr_len, dname_len)+2;
|
|
d->rr_data[i] = (uint8_t*)regional_alloc_init(region,
|
|
sldns_wirerr_get_rdatawl(rr, rr_len, dname_len), d->rr_len[i]);
|
|
if(!d->rr_data[i]) {
|
|
log_warn("error out of memory");
|
|
return 0;
|
|
}
|
|
|
|
/* if first entry, fill the key structure */
|
|
if(i==0) {
|
|
rk->rk.type = htons(sldns_wirerr_get_type(rr, rr_len, dname_len));
|
|
rk->rk.rrset_class = htons(sldns_wirerr_get_class(rr, rr_len, dname_len));
|
|
rk->rk.dname_len = dname_len;
|
|
rk->rk.dname = regional_alloc_init(region, rr, dname_len);
|
|
if(!rk->rk.dname) {
|
|
log_warn("error out of memory");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
/** move entry into cache */
|
|
static int
|
|
move_into_cache(struct ub_packed_rrset_key* k,
|
|
struct packed_rrset_data* d, struct worker* worker)
|
|
{
|
|
struct ub_packed_rrset_key* ak;
|
|
struct packed_rrset_data* ad;
|
|
size_t s, i, num = d->count + d->rrsig_count;
|
|
struct rrset_ref ref;
|
|
uint8_t* p;
|
|
|
|
ak = alloc_special_obtain(&worker->alloc);
|
|
if(!ak) {
|
|
log_warn("error out of memory");
|
|
return 0;
|
|
}
|
|
ak->entry.data = NULL;
|
|
ak->rk = k->rk;
|
|
ak->entry.hash = rrset_key_hash(&k->rk);
|
|
ak->rk.dname = (uint8_t*)memdup(k->rk.dname, k->rk.dname_len);
|
|
if(!ak->rk.dname) {
|
|
log_warn("error out of memory");
|
|
ub_packed_rrset_parsedelete(ak, &worker->alloc);
|
|
return 0;
|
|
}
|
|
s = sizeof(*ad) + (sizeof(size_t) + sizeof(uint8_t*) +
|
|
sizeof(time_t))* num;
|
|
for(i=0; i<num; i++)
|
|
s += d->rr_len[i];
|
|
ad = (struct packed_rrset_data*)malloc(s);
|
|
if(!ad) {
|
|
log_warn("error out of memory");
|
|
ub_packed_rrset_parsedelete(ak, &worker->alloc);
|
|
return 0;
|
|
}
|
|
p = (uint8_t*)ad;
|
|
memmove(p, d, sizeof(*ad));
|
|
p += sizeof(*ad);
|
|
memmove(p, &d->rr_len[0], sizeof(size_t)*num);
|
|
p += sizeof(size_t)*num;
|
|
memmove(p, &d->rr_data[0], sizeof(uint8_t*)*num);
|
|
p += sizeof(uint8_t*)*num;
|
|
memmove(p, &d->rr_ttl[0], sizeof(time_t)*num);
|
|
p += sizeof(time_t)*num;
|
|
for(i=0; i<num; i++) {
|
|
memmove(p, d->rr_data[i], d->rr_len[i]);
|
|
p += d->rr_len[i];
|
|
}
|
|
packed_rrset_ptr_fixup(ad);
|
|
|
|
ak->entry.data = ad;
|
|
|
|
ref.key = ak;
|
|
ref.id = ak->id;
|
|
(void)rrset_cache_update(worker->env.rrset_cache, &ref,
|
|
&worker->alloc, *worker->env.now);
|
|
return 1;
|
|
}
|
|
|
|
/** load an rrset entry */
|
|
static int
|
|
load_rrset(SSL* ssl, sldns_buffer* buf, struct worker* worker)
|
|
{
|
|
char* s = (char*)sldns_buffer_begin(buf);
|
|
struct regional* region = worker->scratchpad;
|
|
struct ub_packed_rrset_key* rk;
|
|
struct packed_rrset_data* d;
|
|
unsigned int rr_count, rrsig_count, trust, security;
|
|
long long ttl;
|
|
unsigned int i;
|
|
int go_on = 1;
|
|
regional_free_all(region);
|
|
|
|
rk = (struct ub_packed_rrset_key*)regional_alloc_zero(region,
|
|
sizeof(*rk));
|
|
d = (struct packed_rrset_data*)regional_alloc_zero(region, sizeof(*d));
|
|
if(!rk || !d) {
|
|
log_warn("error out of memory");
|
|
return 0;
|
|
}
|
|
|
|
if(strncmp(s, ";rrset", 6) != 0) {
|
|
log_warn("error expected ';rrset' but got %s", s);
|
|
return 0;
|
|
}
|
|
s += 6;
|
|
if(strncmp(s, " nsec_apex", 10) == 0) {
|
|
s += 10;
|
|
rk->rk.flags |= PACKED_RRSET_NSEC_AT_APEX;
|
|
}
|
|
if(sscanf(s, " " ARG_LL "d %u %u %u %u", &ttl, &rr_count, &rrsig_count,
|
|
&trust, &security) != 5) {
|
|
log_warn("error bad rrset spec %s", s);
|
|
return 0;
|
|
}
|
|
if(rr_count == 0 && rrsig_count == 0) {
|
|
log_warn("bad rrset without contents");
|
|
return 0;
|
|
}
|
|
if(rr_count > RR_COUNT_MAX || rrsig_count > RR_COUNT_MAX) {
|
|
log_warn("bad rrset with too many rrs");
|
|
return 0;
|
|
}
|
|
d->count = (size_t)rr_count;
|
|
d->rrsig_count = (size_t)rrsig_count;
|
|
d->security = (enum sec_status)security;
|
|
d->trust = (enum rrset_trust)trust;
|
|
d->ttl = (time_t)ttl + *worker->env.now;
|
|
|
|
d->rr_len = regional_alloc_zero(region,
|
|
sizeof(size_t)*(d->count+d->rrsig_count));
|
|
d->rr_ttl = regional_alloc_zero(region,
|
|
sizeof(time_t)*(d->count+d->rrsig_count));
|
|
d->rr_data = regional_alloc_zero(region,
|
|
sizeof(uint8_t*)*(d->count+d->rrsig_count));
|
|
if(!d->rr_len || !d->rr_ttl || !d->rr_data) {
|
|
log_warn("error out of memory");
|
|
return 0;
|
|
}
|
|
|
|
/* read the rr's themselves */
|
|
for(i=0; i<rr_count; i++) {
|
|
if(!load_rr(ssl, buf, region, rk, d, i, 0,
|
|
&go_on, *worker->env.now)) {
|
|
log_warn("could not read rr %u", i);
|
|
return 0;
|
|
}
|
|
}
|
|
for(i=0; i<rrsig_count; i++) {
|
|
if(!load_rr(ssl, buf, region, rk, d, i+rr_count, 1,
|
|
&go_on, *worker->env.now)) {
|
|
log_warn("could not read rrsig %u", i);
|
|
return 0;
|
|
}
|
|
}
|
|
if(!go_on) {
|
|
/* skip this entry */
|
|
return 1;
|
|
}
|
|
|
|
return move_into_cache(rk, d, worker);
|
|
}
|
|
|
|
/** load rrset cache */
|
|
static int
|
|
load_rrset_cache(SSL* ssl, struct worker* worker)
|
|
{
|
|
sldns_buffer* buf = worker->env.scratch_buffer;
|
|
if(!read_fixed(ssl, buf, "START_RRSET_CACHE")) return 0;
|
|
while(ssl_read_buf(ssl, buf) &&
|
|
strcmp((char*)sldns_buffer_begin(buf), "END_RRSET_CACHE")!=0) {
|
|
if(!load_rrset(ssl, buf, worker))
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/** read qinfo from next three words */
|
|
static char*
|
|
load_qinfo(char* str, struct query_info* qinfo, struct regional* region)
|
|
{
|
|
/* s is part of the buf */
|
|
char* s = str;
|
|
uint8_t rr[LDNS_RR_BUF_SIZE];
|
|
size_t rr_len = sizeof(rr), dname_len = 0;
|
|
int status;
|
|
|
|
/* skip three words */
|
|
s = strchr(str, ' ');
|
|
if(s) s = strchr(s+1, ' ');
|
|
if(s) s = strchr(s+1, ' ');
|
|
if(!s) {
|
|
log_warn("error line too short, %s", str);
|
|
return NULL;
|
|
}
|
|
s[0] = 0;
|
|
s++;
|
|
|
|
/* parse them */
|
|
status = sldns_str2wire_rr_question_buf(str, rr, &rr_len, &dname_len,
|
|
NULL, 0, NULL, 0);
|
|
if(status != 0) {
|
|
log_warn("error cannot parse: %s %s",
|
|
sldns_get_errorstr_parse(status), str);
|
|
return NULL;
|
|
}
|
|
qinfo->qtype = sldns_wirerr_get_type(rr, rr_len, dname_len);
|
|
qinfo->qclass = sldns_wirerr_get_class(rr, rr_len, dname_len);
|
|
qinfo->qname_len = dname_len;
|
|
qinfo->qname = (uint8_t*)regional_alloc_init(region, rr, dname_len);
|
|
qinfo->local_alias = NULL;
|
|
if(!qinfo->qname) {
|
|
log_warn("error out of memory");
|
|
return NULL;
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
/** load a msg rrset reference */
|
|
static int
|
|
load_ref(SSL* ssl, sldns_buffer* buf, struct worker* worker,
|
|
struct regional *region, struct ub_packed_rrset_key** rrset,
|
|
int* go_on)
|
|
{
|
|
char* s = (char*)sldns_buffer_begin(buf);
|
|
struct query_info qinfo;
|
|
unsigned int flags;
|
|
struct ub_packed_rrset_key* k;
|
|
|
|
/* read line */
|
|
if(!ssl_read_buf(ssl, buf))
|
|
return 0;
|
|
if(strncmp(s, "BADREF", 6) == 0) {
|
|
*go_on = 0; /* its bad, skip it and skip message */
|
|
return 1;
|
|
}
|
|
|
|
s = load_qinfo(s, &qinfo, region);
|
|
if(!s) {
|
|
return 0;
|
|
}
|
|
if(sscanf(s, " %u", &flags) != 1) {
|
|
log_warn("error cannot parse flags: %s", s);
|
|
return 0;
|
|
}
|
|
|
|
/* lookup in cache */
|
|
k = rrset_cache_lookup(worker->env.rrset_cache, qinfo.qname,
|
|
qinfo.qname_len, qinfo.qtype, qinfo.qclass,
|
|
(uint32_t)flags, *worker->env.now, 0);
|
|
if(!k) {
|
|
/* not found or expired */
|
|
*go_on = 0;
|
|
return 1;
|
|
}
|
|
|
|
/* store in result */
|
|
*rrset = packed_rrset_copy_region(k, region, *worker->env.now);
|
|
lock_rw_unlock(&k->entry.lock);
|
|
|
|
return (*rrset != NULL);
|
|
}
|
|
|
|
/** load a msg entry */
|
|
static int
|
|
load_msg(SSL* ssl, sldns_buffer* buf, struct worker* worker)
|
|
{
|
|
struct regional* region = worker->scratchpad;
|
|
struct query_info qinf;
|
|
struct reply_info rep;
|
|
char* s = (char*)sldns_buffer_begin(buf);
|
|
unsigned int flags, qdcount, security, an, ns, ar;
|
|
long long ttl;
|
|
size_t i;
|
|
int go_on = 1;
|
|
|
|
regional_free_all(region);
|
|
|
|
if(strncmp(s, "msg ", 4) != 0) {
|
|
log_warn("error expected msg but got %s", s);
|
|
return 0;
|
|
}
|
|
s += 4;
|
|
s = load_qinfo(s, &qinf, region);
|
|
if(!s) {
|
|
return 0;
|
|
}
|
|
|
|
/* read remainder of line */
|
|
if(sscanf(s, " %u %u " ARG_LL "d %u %u %u %u", &flags, &qdcount, &ttl,
|
|
&security, &an, &ns, &ar) != 7) {
|
|
log_warn("error cannot parse numbers: %s", s);
|
|
return 0;
|
|
}
|
|
rep.flags = (uint16_t)flags;
|
|
rep.qdcount = (uint16_t)qdcount;
|
|
rep.ttl = (time_t)ttl;
|
|
rep.prefetch_ttl = PREFETCH_TTL_CALC(rep.ttl);
|
|
rep.security = (enum sec_status)security;
|
|
if(an > RR_COUNT_MAX || ns > RR_COUNT_MAX || ar > RR_COUNT_MAX) {
|
|
log_warn("error too many rrsets");
|
|
return 0; /* protect against integer overflow in alloc */
|
|
}
|
|
rep.an_numrrsets = (size_t)an;
|
|
rep.ns_numrrsets = (size_t)ns;
|
|
rep.ar_numrrsets = (size_t)ar;
|
|
rep.rrset_count = (size_t)an+(size_t)ns+(size_t)ar;
|
|
rep.rrsets = (struct ub_packed_rrset_key**)regional_alloc_zero(
|
|
region, sizeof(struct ub_packed_rrset_key*)*rep.rrset_count);
|
|
|
|
/* fill repinfo with references */
|
|
for(i=0; i<rep.rrset_count; i++) {
|
|
if(!load_ref(ssl, buf, worker, region, &rep.rrsets[i],
|
|
&go_on)) {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if(!go_on)
|
|
return 1; /* skip this one, not all references satisfied */
|
|
|
|
if(!dns_cache_store(&worker->env, &qinf, &rep, 0, 0, 0, NULL, flags)) {
|
|
log_warn("error out of memory");
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/** load msg cache */
|
|
static int
|
|
load_msg_cache(SSL* ssl, struct worker* worker)
|
|
{
|
|
sldns_buffer* buf = worker->env.scratch_buffer;
|
|
if(!read_fixed(ssl, buf, "START_MSG_CACHE")) return 0;
|
|
while(ssl_read_buf(ssl, buf) &&
|
|
strcmp((char*)sldns_buffer_begin(buf), "END_MSG_CACHE")!=0) {
|
|
if(!load_msg(ssl, buf, worker))
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
load_cache(SSL* ssl, struct worker* worker)
|
|
{
|
|
if(!load_rrset_cache(ssl, worker))
|
|
return 0;
|
|
if(!load_msg_cache(ssl, worker))
|
|
return 0;
|
|
return read_fixed(ssl, worker->env.scratch_buffer, "EOF");
|
|
}
|
|
|
|
/** print details on a delegation point */
|
|
static void
|
|
print_dp_details(SSL* ssl, struct worker* worker, struct delegpt* dp)
|
|
{
|
|
char buf[257];
|
|
struct delegpt_addr* a;
|
|
int lame, dlame, rlame, rto, edns_vs, to, delay,
|
|
tA = 0, tAAAA = 0, tother = 0;
|
|
long long entry_ttl;
|
|
struct rtt_info ri;
|
|
uint8_t edns_lame_known;
|
|
for(a = dp->target_list; a; a = a->next_target) {
|
|
addr_to_str(&a->addr, a->addrlen, buf, sizeof(buf));
|
|
if(!ssl_printf(ssl, "%-16s\t", buf))
|
|
return;
|
|
if(a->bogus) {
|
|
if(!ssl_printf(ssl, "Address is BOGUS. "))
|
|
return;
|
|
}
|
|
/* lookup in infra cache */
|
|
delay=0;
|
|
entry_ttl = infra_get_host_rto(worker->env.infra_cache,
|
|
&a->addr, a->addrlen, dp->name, dp->namelen,
|
|
&ri, &delay, *worker->env.now, &tA, &tAAAA, &tother);
|
|
if(entry_ttl == -2 && ri.rto >= USEFUL_SERVER_TOP_TIMEOUT) {
|
|
if(!ssl_printf(ssl, "expired, rto %d msec, tA %d "
|
|
"tAAAA %d tother %d.\n", ri.rto, tA, tAAAA,
|
|
tother))
|
|
return;
|
|
continue;
|
|
}
|
|
if(entry_ttl == -1 || entry_ttl == -2) {
|
|
if(!ssl_printf(ssl, "not in infra cache.\n"))
|
|
return;
|
|
continue; /* skip stuff not in infra cache */
|
|
}
|
|
|
|
/* uses type_A because most often looked up, but other
|
|
* lameness won't be reported then */
|
|
if(!infra_get_lame_rtt(worker->env.infra_cache,
|
|
&a->addr, a->addrlen, dp->name, dp->namelen,
|
|
LDNS_RR_TYPE_A, &lame, &dlame, &rlame, &rto,
|
|
*worker->env.now)) {
|
|
if(!ssl_printf(ssl, "not in infra cache.\n"))
|
|
return;
|
|
continue; /* skip stuff not in infra cache */
|
|
}
|
|
if(!ssl_printf(ssl, "%s%s%s%srto %d msec, ttl " ARG_LL "d, "
|
|
"ping %d var %d rtt %d, tA %d, tAAAA %d, tother %d",
|
|
lame?"LAME ":"", dlame?"NoDNSSEC ":"",
|
|
a->lame?"AddrWasParentSide ":"",
|
|
rlame?"NoAuthButRecursive ":"", rto, entry_ttl,
|
|
ri.srtt, ri.rttvar, rtt_notimeout(&ri),
|
|
tA, tAAAA, tother))
|
|
return;
|
|
if(delay)
|
|
if(!ssl_printf(ssl, ", probedelay %d", delay))
|
|
return;
|
|
if(infra_host(worker->env.infra_cache, &a->addr, a->addrlen,
|
|
dp->name, dp->namelen, *worker->env.now, &edns_vs,
|
|
&edns_lame_known, &to)) {
|
|
if(edns_vs == -1) {
|
|
if(!ssl_printf(ssl, ", noEDNS%s.",
|
|
edns_lame_known?" probed":" assumed"))
|
|
return;
|
|
} else {
|
|
if(!ssl_printf(ssl, ", EDNS %d%s.", edns_vs,
|
|
edns_lame_known?" probed":" assumed"))
|
|
return;
|
|
}
|
|
}
|
|
if(!ssl_printf(ssl, "\n"))
|
|
return;
|
|
}
|
|
}
|
|
|
|
/** print main dp info */
|
|
static void
|
|
print_dp_main(SSL* ssl, struct delegpt* dp, struct dns_msg* msg)
|
|
{
|
|
size_t i, n_ns, n_miss, n_addr, n_res, n_avail;
|
|
|
|
/* print the dp */
|
|
if(msg)
|
|
for(i=0; i<msg->rep->rrset_count; i++) {
|
|
struct ub_packed_rrset_key* k = msg->rep->rrsets[i];
|
|
struct packed_rrset_data* d =
|
|
(struct packed_rrset_data*)k->entry.data;
|
|
if(d->security == sec_status_bogus) {
|
|
if(!ssl_printf(ssl, "Address is BOGUS:\n"))
|
|
return;
|
|
}
|
|
if(!dump_rrset(ssl, k, d, 0))
|
|
return;
|
|
}
|
|
delegpt_count_ns(dp, &n_ns, &n_miss);
|
|
delegpt_count_addr(dp, &n_addr, &n_res, &n_avail);
|
|
/* since dp has not been used by iterator, all are available*/
|
|
if(!ssl_printf(ssl, "Delegation with %d names, of which %d "
|
|
"can be examined to query further addresses.\n"
|
|
"%sIt provides %d IP addresses.\n",
|
|
(int)n_ns, (int)n_miss, (dp->bogus?"It is BOGUS. ":""),
|
|
(int)n_addr))
|
|
return;
|
|
}
|
|
|
|
int print_deleg_lookup(SSL* ssl, struct worker* worker, uint8_t* nm,
|
|
size_t nmlen, int ATTR_UNUSED(nmlabs))
|
|
{
|
|
/* deep links into the iterator module */
|
|
struct delegpt* dp;
|
|
struct dns_msg* msg;
|
|
struct regional* region = worker->scratchpad;
|
|
char b[260];
|
|
struct query_info qinfo;
|
|
struct iter_hints_stub* stub;
|
|
regional_free_all(region);
|
|
qinfo.qname = nm;
|
|
qinfo.qname_len = nmlen;
|
|
qinfo.qtype = LDNS_RR_TYPE_A;
|
|
qinfo.qclass = LDNS_RR_CLASS_IN;
|
|
qinfo.local_alias = NULL;
|
|
|
|
dname_str(nm, b);
|
|
if(!ssl_printf(ssl, "The following name servers are used for lookup "
|
|
"of %s\n", b))
|
|
return 0;
|
|
|
|
dp = forwards_lookup(worker->env.fwds, nm, qinfo.qclass);
|
|
if(dp) {
|
|
if(!ssl_printf(ssl, "forwarding request:\n"))
|
|
return 0;
|
|
print_dp_main(ssl, dp, NULL);
|
|
print_dp_details(ssl, worker, dp);
|
|
return 1;
|
|
}
|
|
|
|
while(1) {
|
|
dp = dns_cache_find_delegation(&worker->env, nm, nmlen,
|
|
qinfo.qtype, qinfo.qclass, region, &msg,
|
|
*worker->env.now);
|
|
if(!dp) {
|
|
return ssl_printf(ssl, "no delegation from "
|
|
"cache; goes to configured roots\n");
|
|
}
|
|
/* go up? */
|
|
if(iter_dp_is_useless(&qinfo, BIT_RD, dp)) {
|
|
print_dp_main(ssl, dp, msg);
|
|
print_dp_details(ssl, worker, dp);
|
|
if(!ssl_printf(ssl, "cache delegation was "
|
|
"useless (no IP addresses)\n"))
|
|
return 0;
|
|
if(dname_is_root(nm)) {
|
|
/* goes to root config */
|
|
return ssl_printf(ssl, "no delegation from "
|
|
"cache; goes to configured roots\n");
|
|
} else {
|
|
/* useless, goes up */
|
|
nm = dp->name;
|
|
nmlen = dp->namelen;
|
|
dname_remove_label(&nm, &nmlen);
|
|
dname_str(nm, b);
|
|
if(!ssl_printf(ssl, "going up, lookup %s\n", b))
|
|
return 0;
|
|
continue;
|
|
}
|
|
}
|
|
stub = hints_lookup_stub(worker->env.hints, nm, qinfo.qclass,
|
|
dp);
|
|
if(stub) {
|
|
if(stub->noprime) {
|
|
if(!ssl_printf(ssl, "The noprime stub servers "
|
|
"are used:\n"))
|
|
return 0;
|
|
} else {
|
|
if(!ssl_printf(ssl, "The stub is primed "
|
|
"with servers:\n"))
|
|
return 0;
|
|
}
|
|
print_dp_main(ssl, stub->dp, NULL);
|
|
print_dp_details(ssl, worker, stub->dp);
|
|
} else {
|
|
print_dp_main(ssl, dp, msg);
|
|
print_dp_details(ssl, worker, dp);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return 1;
|
|
}
|