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authorDaniel Baumann <daniel.baumann@progress-linux.org>2021-07-17 07:11:12 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2021-07-17 07:11:12 +0000
commitb72837827d9290c7ec50b9e4b9e1a0f194ddccca (patch)
tree8df663325413d0f92086d740638555de6b779df7 /src/output/dnssim/udp.c
parentAdding upstream version 1.1.0+debian. (diff)
downloaddnsjit-b72837827d9290c7ec50b9e4b9e1a0f194ddccca.tar.xz
dnsjit-b72837827d9290c7ec50b9e4b9e1a0f194ddccca.zip
Adding upstream version 1.2.1.upstream/1.2.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--src/output/dnssim/udp.c156
1 files changed, 0 insertions, 156 deletions
diff --git a/src/output/dnssim/udp.c b/src/output/dnssim/udp.c
deleted file mode 100644
index 74f8569..0000000
--- a/src/output/dnssim/udp.c
+++ /dev/null
@@ -1,156 +0,0 @@
-/*
- * Copyright (c) 2019-2020, CZ.NIC, z.s.p.o.
- * All rights reserved.
- *
- * This file is part of dnsjit.
- *
- * dnsjit is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * dnsjit is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with dnsjit. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "config.h"
-
-#include "output/dnssim.h"
-#include "output/dnssim/internal.h"
-#include "output/dnssim/ll.h"
-#include "core/assert.h"
-
-static core_log_t _log = LOG_T_INIT("output.dnssim");
-
-static int _process_udp_response(uv_udp_t* handle, ssize_t nread, const uv_buf_t* buf)
-{
- _output_dnssim_query_udp_t* qry = (_output_dnssim_query_udp_t*)handle->data;
- _output_dnssim_request_t* req;
- core_object_payload_t payload = CORE_OBJECT_PAYLOAD_INIT(NULL);
- core_object_dns_t dns_a = CORE_OBJECT_DNS_INIT(&payload);
- mlassert(qry, "qry is nil");
- mlassert(qry->qry.req, "query must be part of a request");
- req = qry->qry.req;
-
- payload.payload = (uint8_t*)buf->base;
- payload.len = nread;
-
- dns_a.obj_prev = (core_object_t*)&payload;
- int ret = core_object_dns_parse_header(&dns_a);
- if (ret != 0) {
- mldebug("udp response malformed");
- return _ERR_MALFORMED;
- }
- if (dns_a.id != req->dns_q->id) {
- mldebug("udp response msgid mismatch %x(q) != %x(a)", req->dns_q->id, dns_a.id);
- return _ERR_MSGID;
- }
- if (dns_a.tc == 1) {
- mldebug("udp response has TC=1");
- return _ERR_TC;
- }
- ret = _output_dnssim_answers_request(req, &dns_a);
- if (ret != 0) {
- mlwarning("udp reponse question mismatch");
- return _ERR_QUESTION;
- }
-
- _output_dnssim_request_answered(req, &dns_a);
- return 0;
-}
-
-static void _on_udp_query_recv(uv_udp_t* handle, ssize_t nread, const uv_buf_t* buf, const struct sockaddr* addr, unsigned flags)
-{
- if (nread > 0) {
- mldebug("udp recv: %d", nread);
-
- // TODO handle TC=1
- _process_udp_response(handle, nread, buf);
- }
-
- if (buf->base != NULL) {
- free(buf->base);
- }
-}
-
-static void _on_query_udp_closed(uv_handle_t* handle)
-{
- _output_dnssim_query_udp_t* qry = (_output_dnssim_query_udp_t*)handle->data;
- _output_dnssim_request_t* req;
- mlassert(qry, "qry is nil");
- mlassert(qry->qry.req, "query must be part of a request");
- req = qry->qry.req;
-
- free(qry->handle);
-
- _ll_remove(req->qry, &qry->qry);
- free(qry);
-
- if (req->qry == NULL)
- _output_dnssim_maybe_free_request(req);
-}
-
-void _output_dnssim_close_query_udp(_output_dnssim_query_udp_t* qry)
-{
- int ret;
- mlassert(qry, "qry is nil");
-
- ret = uv_udp_recv_stop(qry->handle);
- if (ret < 0) {
- mldebug("failed uv_udp_recv_stop(): %s", uv_strerror(ret));
- }
-
- uv_close((uv_handle_t*)qry->handle, _on_query_udp_closed);
-}
-
-int _output_dnssim_create_query_udp(output_dnssim_t* self, _output_dnssim_request_t* req)
-{
- int ret;
- _output_dnssim_query_udp_t* qry;
- core_object_payload_t* payload;
- mlassert_self();
- lassert(req, "req is nil");
- payload = (core_object_payload_t*)req->dns_q->obj_prev;
-
- lfatal_oom(qry = calloc(1, sizeof(_output_dnssim_query_udp_t)));
- lfatal_oom(qry->handle = malloc(sizeof(uv_udp_t)));
-
- qry->qry.transport = OUTPUT_DNSSIM_TRANSPORT_UDP;
- qry->qry.req = req;
- qry->buf = uv_buf_init((char*)payload->payload, payload->len);
- qry->handle->data = (void*)qry;
- ret = uv_udp_init(&_self->loop, qry->handle);
- if (ret < 0) {
- lwarning("failed to init uv_udp_t");
- goto failure;
- }
- _ll_append(req->qry, &qry->qry);
-
- ret = _output_dnssim_bind_before_connect(self, (uv_handle_t*)qry->handle);
- if (ret < 0)
- return ret;
-
- ret = uv_udp_try_send(qry->handle, &qry->buf, 1, (struct sockaddr*)&_self->target);
- if (ret < 0) {
- lwarning("failed to send udp packet: %s", uv_strerror(ret));
- return ret;
- }
-
- // listen for reply
- ret = uv_udp_recv_start(qry->handle, _output_dnssim_on_uv_alloc, _on_udp_query_recv);
- if (ret < 0) {
- lwarning("failed uv_udp_recv_start(): %s", uv_strerror(ret));
- return ret;
- }
-
- return 0;
-failure:
- free(qry->handle);
- free(qry);
- return ret;
-}