struct waiting_tcp*
pending_tcp_query(struct outside_network* outnet, ldns_buffer* packet,
struct sockaddr_storage* addr, socklen_t addrlen, int timeout,
comm_point_callback_t* callback, void* callback_arg)
{
struct replay_runtime* runtime = (struct replay_runtime*)outnet->base;
struct fake_pending* pend = (struct fake_pending*)calloc(1,
sizeof(struct fake_pending));
ldns_status status;
log_assert(pend);
pend->buffer = ldns_buffer_new(ldns_buffer_capacity(packet));
log_assert(pend->buffer);
ldns_buffer_write(pend->buffer, ldns_buffer_begin(packet),
ldns_buffer_limit(packet));
ldns_buffer_flip(pend->buffer);
memcpy(&pend->addr, addr, addrlen);
pend->addrlen = addrlen;
pend->callback = callback;
pend->cb_arg = callback_arg;
pend->timeout = timeout;
pend->transport = transport_tcp;
pend->pkt = NULL;
pend->runtime = runtime;
pend->serviced = 0;
status = ldns_buffer2pkt_wire(&pend->pkt, packet);
if(status != LDNS_STATUS_OK) {
log_err("ldns error parsing tcp output packet: %s",
ldns_get_errorstr_by_id(status));
fatal_exit("Sending unparseable DNS packets to servers!");
}
log_pkt("pending tcp pkt: ", pend->pkt);
/* see if it matches the current moment */
if(runtime->now && runtime->now->evt_type == repevt_back_query &&
(runtime->now->addrlen == 0 || sockaddr_cmp(
&runtime->now->addr, runtime->now->addrlen,
&pend->addr, pend->addrlen) == 0) &&
find_match(runtime->now->match, pend->pkt, pend->transport)) {
log_info("testbound: matched pending to event. "
"advance time between events.");
log_info("testbound: do STEP %d %s", runtime->now->time_step,
repevt_string(runtime->now->evt_type));
advance_moment(runtime);
/* still create the pending, because we need it to callback */
}
log_info("testbound: created fake pending");
/* add to list */
pend->next = runtime->pending_list;
runtime->pending_list = pend;
return (struct waiting_tcp*)pend;
}
struct waiting_tcp*
pending_tcp_query(struct outside_network* outnet, sldns_buffer* packet,
struct sockaddr_storage* addr, socklen_t addrlen, int timeout,
comm_point_callback_t* callback, void* callback_arg,
int ATTR_UNUSED(ssl_upstream))
{
struct replay_runtime* runtime = (struct replay_runtime*)outnet->base;
struct fake_pending* pend = (struct fake_pending*)calloc(1,
sizeof(struct fake_pending));
log_assert(pend);
pend->buffer = sldns_buffer_new(sldns_buffer_capacity(packet));
log_assert(pend->buffer);
sldns_buffer_write(pend->buffer, sldns_buffer_begin(packet),
sldns_buffer_limit(packet));
sldns_buffer_flip(pend->buffer);
memcpy(&pend->addr, addr, addrlen);
pend->addrlen = addrlen;
pend->callback = callback;
pend->cb_arg = callback_arg;
pend->timeout = timeout;
pend->transport = transport_tcp;
pend->pkt = NULL;
pend->zone = NULL;
pend->runtime = runtime;
pend->serviced = 0;
pend->pkt_len = sldns_buffer_limit(packet);
pend->pkt = memdup(sldns_buffer_begin(packet), pend->pkt_len);
if(!pend->pkt) fatal_exit("out of memory");
log_pkt("pending tcp pkt: ", pend->pkt, pend->pkt_len);
/* see if it matches the current moment */
if(runtime->now && runtime->now->evt_type == repevt_back_query &&
(runtime->now->addrlen == 0 || sockaddr_cmp(
&runtime->now->addr, runtime->now->addrlen,
&pend->addr, pend->addrlen) == 0) &&
find_match(runtime->now->match, pend->pkt, pend->pkt_len,
pend->transport)) {
log_info("testbound: matched pending to event. "
"advance time between events.");
log_info("testbound: do STEP %d %s", runtime->now->time_step,
repevt_string(runtime->now->evt_type));
advance_moment(runtime);
/* still create the pending, because we need it to callback */
}
log_info("testbound: created fake pending");
/* add to list */
pend->next = runtime->pending_list;
runtime->pending_list = pend;
return (struct waiting_tcp*)pend;
}
/** Check the now moment answer check event */
static void
answer_check_it(struct replay_runtime* runtime)
{
struct replay_answer* ans = runtime->answer_list,
*prev = NULL;
log_assert(runtime && runtime->now &&
runtime->now->evt_type == repevt_front_reply);
while(ans) {
enum transport_type tr = transport_tcp;
if(ans->repinfo.c->type == comm_udp)
tr = transport_udp;
if((runtime->now->addrlen == 0 || sockaddr_cmp(
&runtime->now->addr, runtime->now->addrlen,
&ans->repinfo.addr, ans->repinfo.addrlen) == 0) &&
find_match(runtime->now->match, ans->pkt,
ans->pkt_len, tr)) {
log_info("testbound matched event entry from line %d",
runtime->now->match->lineno);
log_info("testbound: do STEP %d %s",
runtime->now->time_step,
repevt_string(runtime->now->evt_type));
if(prev)
prev->next = ans->next;
else runtime->answer_list = ans->next;
if(!ans->next)
runtime->answer_last = prev;
delete_replay_answer(ans);
return;
} else {
prev = ans;
ans = ans->next;
}
}
log_info("testbound: do STEP %d %s", runtime->now->time_step,
repevt_string(runtime->now->evt_type));
fatal_exit("testbound: not matched");
}
/**
* Perform actions or checks determined by the moment.
* Also advances the time by one step.
* @param runtime: scenario runtime information.
*/
static void
do_moment_and_advance(struct replay_runtime* runtime)
{
struct replay_moment* mom;
if(!runtime->now) {
advance_moment(runtime);
return;
}
log_info("testbound: do STEP %d %s", runtime->now->time_step,
repevt_string(runtime->now->evt_type));
switch(runtime->now->evt_type) {
case repevt_nothing:
advance_moment(runtime);
break;
case repevt_front_query:
/* advance moment before doing the step, so that the next
moment which may check some result of the mom step
can catch those results. */
mom = runtime->now;
advance_moment(runtime);
fake_front_query(runtime, mom);
break;
case repevt_front_reply:
if(runtime->answer_list)
log_err("testbound: There are unmatched answers.");
fatal_exit("testbound: query answer not matched");
break;
case repevt_timeout:
mom = runtime->now;
advance_moment(runtime);
expon_timeout_backoff(runtime);
fake_pending_callback(runtime, mom, NETEVENT_TIMEOUT);
break;
case repevt_back_reply:
mom = runtime->now;
advance_moment(runtime);
fake_pending_callback(runtime, mom, NETEVENT_NOERROR);
break;
case repevt_back_query:
/* Back queries are matched when they are sent out. */
log_err("No query matching the current moment was sent.");
fatal_exit("testbound: back query not matched");
break;
case repevt_error:
mom = runtime->now;
advance_moment(runtime);
fake_pending_callback(runtime, mom, NETEVENT_CLOSED);
break;
case repevt_time_passes:
time_passes(runtime, runtime->now);
advance_moment(runtime);
break;
case repevt_autotrust_check:
autotrust_check(runtime, runtime->now);
advance_moment(runtime);
break;
case repevt_assign:
moment_assign(runtime, runtime->now);
advance_moment(runtime);
break;
case repevt_traffic:
advance_moment(runtime);
break;
case repevt_infra_rtt:
do_infra_rtt(runtime);
advance_moment(runtime);
break;
default:
fatal_exit("testbound: unknown event type %d",
runtime->now->evt_type);
}
}
struct serviced_query* outnet_serviced_query(struct outside_network* outnet,
uint8_t* qname, size_t qnamelen, uint16_t qtype, uint16_t qclass,
uint16_t flags, int dnssec, int ATTR_UNUSED(want_dnssec),
int ATTR_UNUSED(tcp_upstream), int ATTR_UNUSED(ssl_upstream),
struct sockaddr_storage* addr, socklen_t addrlen, uint8_t* zone,
size_t zonelen, comm_point_callback_t* callback, void* callback_arg,
sldns_buffer* ATTR_UNUSED(buff))
{
struct replay_runtime* runtime = (struct replay_runtime*)outnet->base;
struct fake_pending* pend = (struct fake_pending*)calloc(1,
sizeof(struct fake_pending));
char z[256];
log_assert(pend);
log_nametypeclass(VERB_OPS, "pending serviced query",
qname, qtype, qclass);
dname_str(zone, z);
verbose(VERB_OPS, "pending serviced query zone %s flags%s%s%s%s",
z, (flags&BIT_RD)?" RD":"", (flags&BIT_CD)?" CD":"",
(flags&~(BIT_RD|BIT_CD))?" MORE":"", (dnssec)?" DO":"");
/* create packet with EDNS */
pend->buffer = sldns_buffer_new(512);
log_assert(pend->buffer);
sldns_buffer_write_u16(pend->buffer, 0); /* id */
sldns_buffer_write_u16(pend->buffer, flags);
sldns_buffer_write_u16(pend->buffer, 1); /* qdcount */
sldns_buffer_write_u16(pend->buffer, 0); /* ancount */
sldns_buffer_write_u16(pend->buffer, 0); /* nscount */
sldns_buffer_write_u16(pend->buffer, 0); /* arcount */
sldns_buffer_write(pend->buffer, qname, qnamelen);
sldns_buffer_write_u16(pend->buffer, qtype);
sldns_buffer_write_u16(pend->buffer, qclass);
sldns_buffer_flip(pend->buffer);
if(1) {
/* add edns */
struct edns_data edns;
edns.edns_present = 1;
edns.ext_rcode = 0;
edns.edns_version = EDNS_ADVERTISED_VERSION;
edns.udp_size = EDNS_ADVERTISED_SIZE;
edns.bits = 0;
if(dnssec)
edns.bits = EDNS_DO;
attach_edns_record(pend->buffer, &edns);
}
memcpy(&pend->addr, addr, addrlen);
pend->addrlen = addrlen;
pend->zone = memdup(zone, zonelen);
pend->zonelen = zonelen;
pend->qtype = (int)qtype;
log_assert(pend->zone);
pend->callback = callback;
pend->cb_arg = callback_arg;
pend->timeout = UDP_AUTH_QUERY_TIMEOUT;
pend->transport = transport_udp; /* pretend UDP */
pend->pkt = NULL;
pend->runtime = runtime;
pend->serviced = 1;
pend->pkt_len = sldns_buffer_limit(pend->buffer);
pend->pkt = memdup(sldns_buffer_begin(pend->buffer), pend->pkt_len);
if(!pend->pkt) fatal_exit("out of memory");
/*log_pkt("pending serviced query: ", pend->pkt, pend->pkt_len);*/
/* see if it matches the current moment */
if(runtime->now && runtime->now->evt_type == repevt_back_query &&
(runtime->now->addrlen == 0 || sockaddr_cmp(
&runtime->now->addr, runtime->now->addrlen,
&pend->addr, pend->addrlen) == 0) &&
find_match(runtime->now->match, pend->pkt, pend->pkt_len,
pend->transport)) {
log_info("testbound: matched pending to event. "
"advance time between events.");
log_info("testbound: do STEP %d %s", runtime->now->time_step,
repevt_string(runtime->now->evt_type));
advance_moment(runtime);
/* still create the pending, because we need it to callback */
}
log_info("testbound: created fake pending");
/* add to list */
pend->next = runtime->pending_list;
runtime->pending_list = pend;
return (struct serviced_query*)pend;
}
