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Initial pass at using unbound stock

This commit is contained in:
Neel Goyal 2014-01-21 15:31:22 -05:00
parent d9e3485f8b
commit 2bcfedcf78
15 changed files with 282 additions and 8861 deletions
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8601
aclocal.m4 vendored
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File diff suppressed because it is too large Load Diff

26
configure vendored
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@ -7103,6 +7103,10 @@ _lt_linker_boilerplate=`cat conftest.err`
$RM -r conftest*
## CAVEAT EMPTOR:
## There is no encapsulation within the following macros, do not change
## the running order or otherwise move them around unless you know exactly
## what you are doing...
if test -n "$compiler"; then
lt_prog_compiler_no_builtin_flag=
@ -11014,9 +11018,9 @@ fi
found_libunbound=1
{ $as_echo "$as_me:${as_lineno-$LINENO}: Checking for dependency libunbound" >&5
$as_echo "$as_me: Checking for dependency libunbound" >&6;}
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ub_ctx_set_event in -lunbound" >&5
$as_echo_n "checking for ub_ctx_set_event in -lunbound... " >&6; }
if ${ac_cv_lib_unbound_ub_ctx_set_event+:} false; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ub_fd in -lunbound" >&5
$as_echo_n "checking for ub_fd in -lunbound... " >&6; }
if ${ac_cv_lib_unbound_ub_fd+:} false; then :
$as_echo_n "(cached) " >&6
else
ac_check_lib_save_LIBS=$LIBS
@ -11030,27 +11034,27 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
#ifdef __cplusplus
extern "C"
#endif
char ub_ctx_set_event ();
char ub_fd ();
int
main ()
{
return ub_ctx_set_event ();
return ub_fd ();
;
return 0;
}
_ACEOF
if ac_fn_c_try_link "$LINENO"; then :
ac_cv_lib_unbound_ub_ctx_set_event=yes
ac_cv_lib_unbound_ub_fd=yes
else
ac_cv_lib_unbound_ub_ctx_set_event=no
ac_cv_lib_unbound_ub_fd=no
fi
rm -f core conftest.err conftest.$ac_objext \
conftest$ac_exeext conftest.$ac_ext
LIBS=$ac_check_lib_save_LIBS
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_unbound_ub_ctx_set_event" >&5
$as_echo "$ac_cv_lib_unbound_ub_ctx_set_event" >&6; }
if test "x$ac_cv_lib_unbound_ub_ctx_set_event" = xyes; then :
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_unbound_ub_fd" >&5
$as_echo "$ac_cv_lib_unbound_ub_fd" >&6; }
if test "x$ac_cv_lib_unbound_ub_fd" = xyes; then :
cat >>confdefs.h <<_ACEOF
#define HAVE_LIBUNBOUND 1
_ACEOF
@ -11063,7 +11067,7 @@ fi
if test $found_libunbound == 0
then
as_fn_error $? "libunbound is missing or does not incude event code, you may need to patch your libunbound sources and rebuild. See the getdns build instructions" "$LINENO" 5
as_fn_error $? "libunbound is missing." "$LINENO" 5
fi
for ac_prog in doxygen

4
configure.ac
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@ -142,10 +142,10 @@ fi
# patch to the sources
found_libunbound=1
AC_MSG_NOTICE([Checking for dependency libunbound])
AC_CHECK_LIB([unbound], [ub_ctx_set_event], [], [found_libunbound=0])
AC_CHECK_LIB([unbound], [ub_fd], [], [found_libunbound=0])
if test $found_libunbound == 0
then
AC_MSG_ERROR([libunbound is missing or does not incude event code, you may need to patch your libunbound sources and rebuild. See the getdns build instructions])
AC_MSG_ERROR([libunbound is missing.])
fi
AC_CHECK_PROGS([DOXYGEN], [doxygen])

2
src/Makefile.in
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@ -33,7 +33,7 @@ CFLAGS=@CFLAGS@ -Wall -I$(srcdir)/ -I/usr/local/include -std=c99
LDFLAGS=@LDFLAGS@ @LIBS@
GETDNS_OBJ=sync.lo context.lo list.lo dict.lo convert.lo general.lo \
hostname.lo service.lo request-internal.lo validate_dnssec.lo \
util-internal.lo getdns_error.lo
util-internal.lo getdns_error.lo extension_libevent.lo
.SUFFIXES: .c .o .a .lo .h

70
src/context.c
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@ -29,17 +29,11 @@
*/
#include "config.h"
#ifdef HAVE_EVENT2_EVENT_H
# include <event2/event.h>
#else
# include <event.h>
#endif
#include <arpa/inet.h>
#include <ldns/ldns.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <unbound-event.h>
#include <unbound.h>
#include "context.h"
@ -275,11 +269,7 @@ getdns_context_create_with_extended_memory_functions(
result->mf.mf.ext.realloc = realloc;
result->mf.mf.ext.free = free;
result->event_base_sync = event_base_new();
result->unbound_sync = ub_ctx_create_event(result->event_base_sync);
/* create the async one also so options are kept up to date */
result->unbound_async = ub_ctx_create_event(result->event_base_sync);
result->event_base_async = NULL;
result->unbound_ctx = ub_ctx_create();
result->resolution_type_set = 0;
@ -375,10 +365,7 @@ getdns_context_destroy(struct getdns_context *context)
getdns_list_destroy(context->upstream_list);
/* destroy the ub context */
ub_ctx_delete(context->unbound_async);
ub_ctx_delete(context->unbound_sync);
event_base_free(context->event_base_sync);
ub_ctx_delete(context->unbound_ctx);
ldns_rbtree_free(context->outbound_requests);
@ -407,8 +394,7 @@ getdns_context_set_context_update_callback(struct getdns_context *context,
static void
set_ub_string_opt(struct getdns_context *ctx, char *opt, char *value)
{
ub_ctx_set_option(ctx->unbound_sync, opt, value);
ub_ctx_set_option(ctx->unbound_async, opt, value);
ub_ctx_set_option(ctx->unbound_ctx, opt, value);
}
static void
@ -883,27 +869,6 @@ getdns_context_set_memory_functions(struct getdns_context *context,
context, MF_PLAIN, mf.ext.malloc, mf.ext.realloc, mf.ext.free);
} /* getdns_context_set_memory_functions*/
/*
* getdns_extension_set_libevent_base
*
*/
getdns_return_t
getdns_extension_set_libevent_base(struct getdns_context *context,
struct event_base * this_event_base)
{
RETURN_IF_NULL(context, GETDNS_RETURN_BAD_CONTEXT);
if (this_event_base) {
ub_ctx_set_event(context->unbound_async, this_event_base);
context->event_base_async = this_event_base;
} else {
ub_ctx_set_event(context->unbound_async,
context->event_base_sync);
context->event_base_async = NULL;
}
return GETDNS_RETURN_GOOD;
} /* getdns_extension_set_libevent_base */
/* cancel the request */
static void
cancel_dns_req(getdns_dns_req * req)
@ -913,7 +878,7 @@ cancel_dns_req(getdns_dns_req * req)
if (netreq->state == NET_REQ_IN_FLIGHT) {
/* for ev based ub, this should always prevent
* the callback from firing */
ub_cancel(req->unbound, netreq->unbound_id);
ub_cancel(req->context->unbound_ctx, netreq->unbound_id);
netreq->state = NET_REQ_CANCELED;
} else if (netreq->state == NET_REQ_NOT_SENT) {
netreq->state = NET_REQ_CANCELED;
@ -1063,19 +1028,15 @@ getdns_context_prepare_for_resolution(struct getdns_context *context)
return GETDNS_RETURN_BAD_CONTEXT;
}
/* set upstreams */
ub_setup_stub(context->unbound_async, context->upstream_list,
upstream_len);
ub_setup_stub(context->unbound_sync, context->upstream_list,
ub_setup_stub(context->unbound_ctx, context->upstream_list,
upstream_len);
/* use /etc/hosts */
ub_ctx_hosts(context->unbound_sync, NULL);
ub_ctx_hosts(context->unbound_async, NULL);
ub_ctx_hosts(context->unbound_ctx, NULL);
} else if (context->resolution_type == GETDNS_CONTEXT_RECURSING) {
/* set recursive */
/* TODO: use the root servers via root hints file */
ub_ctx_set_fwd(context->unbound_async, NULL);
ub_ctx_set_fwd(context->unbound_sync, NULL);
ub_ctx_set_fwd(context->unbound_ctx, NULL);
} else {
/* bogus? */
@ -1121,6 +1082,23 @@ getdns_context_clear_outbound_request(getdns_dns_req * req)
return GETDNS_RETURN_GOOD;
}
/* get the fd */
int getdns_context_fd(struct getdns_context* context) {
RETURN_IF_NULL(context, -1);
return ub_fd(context->unbound_ctx);
}
/* process async reqs */
getdns_return_t getdns_context_process_async(struct getdns_context* context) {
RETURN_IF_NULL(context, GETDNS_RETURN_BAD_CONTEXT);
if (ub_process(context->unbound_ctx) != 0) {
/* need an async return code? */
return GETDNS_RETURN_GENERIC_ERROR;
}
return GETDNS_RETURN_GOOD;
}
char *
getdns_strdup(const struct mem_funcs *mfs, const char *s)
{

9
src/context.h
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@ -33,7 +33,6 @@
#include <getdns/getdns.h>
#include "types-internal.h"
struct event_base;
struct getdns_dns_req;
struct ldns_rbtree_t;
struct ub_ctx;
@ -63,15 +62,9 @@ struct getdns_context {
struct mem_funcs mf;
struct mem_funcs my_mf;
/* Event loop for sync requests */
struct event_base *event_base_sync;
/* Event loop for async requests */
struct event_base *event_base_async;
/* The underlying unbound contexts that do
* the real work */
struct ub_ctx *unbound_sync;
struct ub_ctx *unbound_async;
struct ub_ctx *unbound_ctx;
/* which resolution type the contexts are configured for
* 0 means nothing set

47
src/extension_libevent.c Normal file
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@ -0,0 +1,47 @@
#include "config.h"
#include "context.h"
#ifdef HAVE_EVENT2_EVENT_H
# include <event2/event.h>
#else
# include <event.h>
# define evutil_socket_t int
# define event_free free
# define evtimer_new(b, cb, arg) event_new((b), -1, 0, (cb), (arg))
#endif
#define RETURN_IF_NULL(ptr, code) if(ptr == NULL) return code;
#ifndef HAVE_EVENT2_EVENT_H
static struct event *
event_new(struct event_base *b, evutil_socket_t fd, short ev, void* cb, void *arg)
{
struct event* e = (struct event*)calloc(1, sizeof(struct event));
if(!e) return NULL;
event_set(e, fd, ev, cb, arg);
event_base_set(b, e);
return e;
}
#endif /* no event2 */
void getdns_libevent_cb(evutil_socket_t fd, short what, void *userarg) {
struct getdns_context* context = (struct getdns_context*) userarg;
getdns_context_process_async(context);
}
/*
* getdns_extension_set_libevent_base
*
*/
getdns_return_t
getdns_extension_set_libevent_base(struct getdns_context *context,
struct event_base * this_event_base)
{
RETURN_IF_NULL(context, GETDNS_RETURN_BAD_CONTEXT);
RETURN_IF_NULL(this_event_base, GETDNS_RETURN_INVALID_PARAMETER);
/* TODO: cleanup current extension base */
int fd = getdns_context_fd(context);
struct event *getdns_event = event_new(this_event_base, fd, EV_READ | EV_PERSIST, getdns_libevent_cb, context);
event_add(getdns_event, NULL);
return GETDNS_RETURN_GOOD;
} /* getdns_extension_set_libevent_base */

228
src/general.c
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@ -35,17 +35,8 @@
*/
#include "config.h"
#ifdef HAVE_EVENT2_EVENT_H
# include <event2/event.h>
#else
# include <event.h>
# define evutil_socket_t int
# define event_free free
# define evtimer_new(b, cb, arg) event_new((b), -1, 0, (cb), (arg))
#endif
#include <string.h>
#include <unbound.h>
#include <unbound-event.h>
#include <ldns/ldns.h>
#include "context.h"
#include "types-internal.h"
@ -56,11 +47,10 @@
#define UNUSED_PARAM(x) ((void)(x))
/* declarations */
static void ub_resolve_callback(void *arg, int err, ldns_buffer * result,
int sec, char *bogus);
static void ub_resolve_timeout(evutil_socket_t fd, short what, void *arg);
static void ub_local_resolve_timeout(evutil_socket_t fd, short what,
void *arg);
static void ub_resolve_callback(void* mydata, int err, struct ub_result* result);
// static void ub_resolve_timeout(evutil_socket_t fd, short what, void *arg);
// static void ub_local_resolve_timeout(evutil_socket_t fd, short what,
// void *arg);
static void handle_network_request_error(getdns_network_req * netreq, int err);
static void handle_dns_request_complete(getdns_dns_req * dns_req);
@ -75,60 +65,48 @@ typedef struct netreq_cb_data
char *bogus;
} netreq_cb_data;
#ifndef HAVE_EVENT2_EVENT_H
static struct event *
event_new(struct event_base *b, evutil_socket_t fd, short ev, void* cb, void *arg)
{
struct event* e = (struct event*)calloc(1, sizeof(struct event));
if(!e) return NULL;
event_set(e, fd, ev, cb, arg);
event_base_set(b, e);
return e;
}
#endif /* no event2 */
// /* cancel, cleanup and send timeout to callback */
// static void
// ub_resolve_timeout(evutil_socket_t fd, short what, void *arg)
// {
// getdns_dns_req *dns_req = (getdns_dns_req *) arg;
// struct getdns_context *context = dns_req->context;
// getdns_transaction_t trans_id = dns_req->trans_id;
// getdns_callback_t cb = dns_req->user_callback;
// void *user_arg = dns_req->user_pointer;
/* cancel, cleanup and send timeout to callback */
static void
ub_resolve_timeout(evutil_socket_t fd, short what, void *arg)
{
getdns_dns_req *dns_req = (getdns_dns_req *) arg;
struct getdns_context *context = dns_req->context;
getdns_transaction_t trans_id = dns_req->trans_id;
getdns_callback_t cb = dns_req->user_callback;
void *user_arg = dns_req->user_pointer;
// /* cancel the req - also clears it from outbound */
// getdns_context_cancel_request(context, trans_id, 0);
/* cancel the req - also clears it from outbound */
getdns_context_cancel_request(context, trans_id, 0);
// /* cleanup */
// dns_req_free(dns_req);
/* cleanup */
dns_req_free(dns_req);
// cb(context, GETDNS_CALLBACK_TIMEOUT, NULL, user_arg, trans_id);
// }
cb(context, GETDNS_CALLBACK_TIMEOUT, NULL, user_arg, trans_id);
}
// static void
// ub_local_resolve_timeout(evutil_socket_t fd, short what, void *arg)
// {
// netreq_cb_data *cb_data = (netreq_cb_data *) arg;
static void
ub_local_resolve_timeout(evutil_socket_t fd, short what, void *arg)
{
netreq_cb_data *cb_data = (netreq_cb_data *) arg;
// /* cleanup the local timer here since the memory may be
// * invalid after calling ub_resolve_callback
// */
// getdns_dns_req *dnsreq = cb_data->netreq->owner;
// event_free(dnsreq->local_cb_timer);
// dnsreq->local_cb_timer = NULL;
/* cleanup the local timer here since the memory may be
* invalid after calling ub_resolve_callback
*/
getdns_dns_req *dnsreq = cb_data->netreq->owner;
event_free(dnsreq->local_cb_timer);
dnsreq->local_cb_timer = NULL;
// /* just call ub_resolve_callback */
// ub_resolve_callback(cb_data->netreq, cb_data->err, cb_data->result,
// cb_data->sec, cb_data->bogus);
/* just call ub_resolve_callback */
ub_resolve_callback(cb_data->netreq, cb_data->err, cb_data->result,
cb_data->sec, cb_data->bogus);
/* cleanup the state */
ldns_buffer_free(cb_data->result);
if (cb_data->bogus) {
free(cb_data->bogus);
}
free(cb_data);
}
// /* cleanup the state */
// ldns_buffer_free(cb_data->result);
// if (cb_data->bogus) {
// free(cb_data->bogus);
// }
// free(cb_data);
// }
/* cleanup and send an error to the user callback */
static void
@ -174,7 +152,7 @@ static int
submit_network_request(getdns_network_req * netreq)
{
getdns_dns_req *dns_req = netreq->owner;
int r = ub_resolve_event(dns_req->unbound,
int r = ub_resolve_async(dns_req->context->unbound_ctx,
dns_req->name,
netreq->request_type,
netreq->request_class,
@ -186,82 +164,84 @@ submit_network_request(getdns_network_req * netreq)
}
static void
ub_resolve_callback(void *arg, int err, ldns_buffer * result, int sec,
char *bogus)
ub_resolve_callback(void* arg, int err, struct ub_result* ub_res)
// ub_resolve_callback(void *arg, int err, ldns_buffer * result, int sec,
// char *bogus)
{
getdns_network_req *netreq = (getdns_network_req *) arg;
getdns_network_req *netreq = (getdns_network_req *) arg;
if (err != 0) {
handle_network_request_error(netreq, err);
return;
}
/* if netreq->state == NET_REQ_NOT_SENT here, that implies
* that ub called us back immediately - probably from a local file.
* This most likely means that getdns_general has not returned
*/
if (netreq->state == NET_REQ_NOT_SENT) {
/* TODO!!!! */
/* just do a very short timer since this was called immediately.
* we can make this less hacky, but it gets interesting when multiple
* netreqs need to be issued and some resolve immediately vs. not.
*/
struct timeval tv;
getdns_dns_req *dnsreq = netreq->owner;
netreq_cb_data *cb_data =
(netreq_cb_data *) malloc(sizeof(netreq_cb_data));
// struct timeval tv;
// getdns_dns_req *dnsreq = netreq->owner;
// netreq_cb_data *cb_data =
// (netreq_cb_data *) malloc(sizeof(netreq_cb_data));
cb_data->netreq = netreq;
cb_data->err = err;
cb_data->sec = sec;
cb_data->result = NULL;
cb_data->bogus = NULL; /* unused but here in case we need it */
if (result) {
cb_data->result =
ldns_buffer_new(ldns_buffer_limit(result));
if (!cb_data->result) {
cb_data->err = GETDNS_RETURN_GENERIC_ERROR;
} else {
/* copy */
ldns_buffer_copy(cb_data->result, result);
}
}
/* schedule the timeout */
dnsreq->local_cb_timer =
evtimer_new(dnsreq->ev_base, ub_local_resolve_timeout,
cb_data);
tv.tv_sec = 0;
/* half ms */
tv.tv_usec = 500;
evtimer_add(dnsreq->local_cb_timer, &tv);
// cb_data->netreq = netreq;
// cb_data->err = err;
// cb_data->sec = sec;
// cb_data->result = NULL;
// cb_data->bogus = NULL; /* unused but here in case we need it */
// if (result) {
// cb_data->result =
// ldns_buffer_new(ldns_buffer_limit(result));
// if (!cb_data->result) {
// cb_data->err = GETDNS_RETURN_GENERIC_ERROR;
// } else {
// /* copy */
// ldns_buffer_copy(cb_data->result, result);
// }
// }
// /* schedule the timeout */
// dnsreq->local_cb_timer =
// evtimer_new(dnsreq->ev_base, ub_local_resolve_timeout,
// cb_data);
// tv.tv_sec = 0;
// /* half ms */
// tv.tv_usec = 500;
// evtimer_add(dnsreq->local_cb_timer, &tv);
return;
}
netreq->state = NET_REQ_FINISHED;
if (err) {
handle_network_request_error(netreq, err);
} else {
/* parse */
ldns_status r =
ldns_buffer2pkt_wire(&(netreq->result), result);
if (r != LDNS_STATUS_OK) {
handle_network_request_error(netreq, r);
/* parse */
/* TODO: optimize */
getdns_return_t r = getdns_apply_network_result(netreq, ub_res);
ub_resolve_free(ub_res);
if (r != GETDNS_RETURN_GOOD) {
handle_network_request_error(netreq, err);
} else {
/* is this the last request */
if (!netreq->next) {
/* finished */
handle_dns_request_complete(netreq->owner);
} else {
/* is this the last request */
if (!netreq->next) {
/* finished */
handle_dns_request_complete(netreq->owner);
} else {
/* not finished - update to next request and ship it */
getdns_dns_req *dns_req = netreq->owner;
dns_req->current_req = netreq->next;
submit_network_request(netreq->next);
}
/* not finished - update to next request and ship it */
getdns_dns_req *dns_req = netreq->owner;
dns_req->current_req = netreq->next;
submit_network_request(netreq->next);
}
}
}
getdns_return_t
getdns_general_ub(struct ub_ctx *unbound,
struct event_base *ev_base,
struct getdns_context *context,
getdns_general_ub(struct getdns_context *context,
const char *name,
uint16_t request_type,
struct getdns_dict *extensions,
void *userarg,
getdns_transaction_t * transaction_id, getdns_callback_t callbackfn)
getdns_transaction_t * transaction_id,
getdns_callback_t callbackfn)
{
/* timeout */
struct timeval tv;
@ -279,7 +259,6 @@ getdns_general_ub(struct ub_ctx *unbound,
/* request state */
getdns_dns_req *req = dns_req_new(context,
unbound,
name,
request_type,
extensions);
@ -296,12 +275,13 @@ getdns_general_ub(struct ub_ctx *unbound,
getdns_context_track_outbound_request(req);
/* assign a timeout */
req->ev_base = ev_base;
req->timeout = evtimer_new(ev_base, ub_resolve_timeout, req);
tv.tv_sec = context->timeout / 1000;
tv.tv_usec = (context->timeout % 1000) * 1000;
evtimer_add(req->timeout, &tv);
/* TODO: timeout.. */
// /* assign a timeout */
// req->ev_base = ev_base;
// req->timeout = evtimer_new(ev_base, ub_resolve_timeout, req);
// tv.tv_sec = context->timeout / 1000;
// tv.tv_usec = (context->timeout % 1000) * 1000;
// evtimer_add(req->timeout, &tv);
/* issue the first network req */
@ -329,7 +309,7 @@ getdns_general(struct getdns_context *context,
{
int extcheck = GETDNS_RETURN_GOOD;
if (!context || !context->event_base_async) {
if (!context) {
/* Can't do async without an event loop
* or callback
*/
@ -345,9 +325,7 @@ getdns_general(struct getdns_context *context,
if (extcheck != GETDNS_RETURN_GOOD)
return extcheck;
return getdns_general_ub(context->unbound_async,
context->event_base_async,
context,
return getdns_general_ub(context,
name, request_type, extensions, userarg, transaction_id, callback);
} /* getdns_general */

7
src/general.h
View File

@ -40,13 +40,8 @@
/* private inner helper used by sync and async */
struct ub_ctx;
struct event_base;
getdns_return_t
getdns_general_ub(struct ub_ctx *unbound,
struct event_base *ev_base,
struct getdns_context *context,
getdns_general_ub(struct getdns_context *context,
const char *name,
uint16_t request_type,
struct getdns_dict *extensions,

7
src/getdns/getdns.h
View File

@ -884,4 +884,11 @@ getdns_return_t
getdns_extension_set_libevent_base(struct getdns_context *context,
struct event_base *this_event_base);
/* get the fd */
int getdns_context_fd(struct getdns_context* context);
/* process async reqs */
getdns_return_t getdns_context_process_async(struct getdns_context* context);
#endif /* GETDNS_H */

26
src/request-internal.c
View File

@ -34,15 +34,8 @@
*/
#include "config.h"
#ifdef HAVE_EVENT2_EVENT_H
# include <event2/event.h>
#else
# include <event.h>
# define event_free free
#endif
#include "types-internal.h"
#include "util-internal.h"
#include <unbound.h>
void
network_req_free(getdns_network_req * net_req)
@ -103,17 +96,6 @@ dns_req_free(getdns_dns_req * req)
net_req = next;
}
/* cleanup timeout */
if (req->timeout) {
event_del(req->timeout);
event_free(req->timeout);
}
if (req->local_cb_timer) {
event_del(req->local_cb_timer);
event_free(req->local_cb_timer);
}
/* free strduped name */
free(req->name);
@ -123,7 +105,6 @@ dns_req_free(getdns_dns_req * req)
/* create a new dns req to be submitted */
getdns_dns_req *
dns_req_new(struct getdns_context *context,
struct ub_ctx *unbound,
const char *name, uint16_t request_type, struct getdns_dict *extensions)
{
@ -139,14 +120,13 @@ dns_req_new(struct getdns_context *context,
result->name = strdup(name);
result->context = context;
result->unbound = unbound;
result->canceled = 0;
result->current_req = NULL;
result->first_req = NULL;
result->trans_id = ldns_get_random();
result->timeout = NULL;
result->local_cb_timer = NULL;
result->ev_base = NULL;
// result->timeout = NULL;
// result->local_cb_timer = NULL;
// result->ev_base = NULL;
getdns_dict_copy(extensions, &result->extensions);

59
src/sync.c
View File

@ -34,13 +34,8 @@
*/
#include "config.h"
#ifdef HAVE_EVENT2_EVENT_H
# include <event2/event.h>
#else
# include <event.h>
#endif
#include <getdns/getdns.h>
#include <unbound-event.h>
#include <unbound.h>
#include "context.h"
#include "general.h"
#include "types-internal.h"
@ -51,14 +46,28 @@
#define UNUSED_PARAM(x) ((void)(x))
#define RETURN_IF_NULL(ptr, code) if(ptr == NULL) return code;
static void
sync_callback_func(struct getdns_context *context,
uint16_t callback_type,
struct getdns_dict *response,
void *userarg, getdns_transaction_t transaction_id)
{
*((struct getdns_dict **) userarg) = response;
getdns_return_t submit_request_sync(getdns_dns_req* req) {
struct ub_result* ub_res = NULL;
getdns_return_t gr = GETDNS_RETURN_GOOD;
getdns_network_req *netreq = req->first_req;
while (netreq) {
int r = ub_resolve(req->context->unbound_ctx,
req->name,
netreq->request_type,
netreq->request_class,
&ub_res);
if (r != 0) {
return GETDNS_RETURN_GENERIC_ERROR;
}
gr = getdns_apply_network_result(netreq, ub_res);
ub_resolve_free(ub_res);
ub_res = NULL;
if (gr != GETDNS_RETURN_GOOD) {
return gr;
}
netreq = netreq->next;
}
return gr;
}
getdns_return_t
@ -73,12 +82,22 @@ getdns_general_sync(struct getdns_context *context,
RETURN_IF_NULL(response, GETDNS_RETURN_INVALID_PARAMETER);
response_status = validate_extensions(extensions);
if (response_status == GETDNS_RETURN_GOOD) {
response_status = getdns_general_ub(context->unbound_sync,
context->event_base_sync,
context, name, request_type,
extensions, (void *) response, NULL, sync_callback_func);
event_base_dispatch(context->event_base_sync);
/* for each netreq we call ub_ctx_resolve */
/* request state */
getdns_dns_req *req = dns_req_new(context,
name,
request_type,
extensions);
if (!req) {
return GETDNS_RETURN_GENERIC_ERROR;
}
response_status = submit_request_sync(req);
if (response_status != GETDNS_RETURN_GOOD) {
dns_req_free(req);
return response_status;
}
*response = create_getdns_response(req);
dns_req_free(req);
}
return response_status;
}

16
src/types-internal.h
View File

@ -99,9 +99,6 @@ struct getdns_context;
/* declarations */
struct getdns_dns_req;
struct getdns_network_req;
struct ub_ctx;
struct event;
struct event_base;
typedef enum network_req_state_enum
{
@ -164,21 +161,9 @@ typedef struct getdns_dns_req
/* first request in list */
struct getdns_network_req *first_req;
/* request timeout event */
struct event *timeout;
/* local callback timer */
struct event *local_cb_timer;
/* event base this req is scheduled on */
struct event_base *ev_base;
/* context that owns the request */
struct getdns_context *context;
/* ub_ctx issuing the request */
struct ub_ctx *unbound;
/* request extensions */
struct getdns_dict *extensions;
@ -246,7 +231,6 @@ getdns_network_req *network_req_new(getdns_dns_req * owner,
/* dns request utils */
getdns_dns_req *dns_req_new(struct getdns_context *context,
struct ub_ctx *unbound,
const char *name, uint16_t request_type, struct getdns_dict *extensions);
void dns_req_free(getdns_dns_req * req);

17
src/util-internal.c
View File

@ -41,6 +41,7 @@
#include "list.h"
#include "util-internal.h"
#include "types-internal.h"
#include <unbound.h>
/**
* this is a comprehensive list of extensions and their data types
@ -677,4 +678,20 @@ validate_extensions(struct getdns_dict * extensions)
return GETDNS_RETURN_GOOD;
} /* validate_extensions */
getdns_return_t getdns_apply_network_result(getdns_network_req* netreq,
struct ub_result* ub_res) {
ldns_buffer *result = ldns_buffer_new(ub_res->answer_len);
if (!result) {
return GETDNS_RETURN_GENERIC_ERROR;
}
ldns_buffer_new_frm_data(result, ub_res->answer_packet, ub_res->answer_len);
ldns_status r =
ldns_buffer2pkt_wire(&(netreq->result), result);
ldns_buffer_free(result);
if (r != LDNS_STATUS_OK) {
return GETDNS_RETURN_GENERIC_ERROR;
}
return GETDNS_RETURN_GOOD;
}
/* util-internal.c */

4
src/util-internal.h
View File

@ -41,6 +41,10 @@
#include <ldns/ldns.h>
#include "context.h"
struct ub_result;
struct getdns_network_req;
getdns_return_t getdns_apply_network_result(getdns_network_req* netreq, struct ub_result* result);
/**
* add an item to the tail of a list - note that this was not in the getdns API
* description but the list_set functions seem to be designed to modify an existing