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https://github.com/openvswitch/ovs
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e1bd3bee5c
The test-vconn program binds a socket to a nonspecific port number. To add SSL support to this program, it needs to be able to use SSL, and the stream library is the easiest way to do that. But the stream library can't bind to a nonspecific port. This commit adds that feature, by adding it to the function that the stream SSL library uses as a building block.
140 lines
3.8 KiB
C
140 lines
3.8 KiB
C
/*
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* Copyright (c) 2008, 2009, 2010 Nicira Networks.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <config.h>
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#include "stream.h"
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#include <errno.h>
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#include <inttypes.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "packets.h"
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#include "socket-util.h"
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#include "util.h"
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#include "stream-provider.h"
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#include "stream-fd.h"
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#include "vlog.h"
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#define THIS_MODULE VLM_stream_tcp
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/* Active TCP. */
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static int
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new_tcp_stream(const char *name, int fd, int connect_status,
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const struct sockaddr_in *remote, struct stream **streamp)
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{
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struct sockaddr_in local;
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socklen_t local_len = sizeof local;
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int on = 1;
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int retval;
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/* Get the local IP and port information */
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retval = getsockname(fd, (struct sockaddr *)&local, &local_len);
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if (retval) {
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memset(&local, 0, sizeof local);
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}
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retval = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &on, sizeof on);
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if (retval) {
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VLOG_ERR("%s: setsockopt(TCP_NODELAY): %s", name, strerror(errno));
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close(fd);
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return errno;
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}
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retval = new_fd_stream(name, fd, connect_status, NULL, streamp);
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if (!retval) {
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struct stream *stream = *streamp;
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stream_set_remote_ip(stream, remote->sin_addr.s_addr);
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stream_set_remote_port(stream, remote->sin_port);
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stream_set_local_ip(stream, local.sin_addr.s_addr);
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stream_set_local_port(stream, local.sin_port);
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}
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return retval;
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}
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static int
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tcp_open(const char *name, char *suffix, struct stream **streamp)
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{
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struct sockaddr_in sin;
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int fd, error;
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error = inet_open_active(SOCK_STREAM, suffix, 0, &sin, &fd);
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if (fd >= 0) {
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return new_tcp_stream(name, fd, error, &sin, streamp);
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} else {
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VLOG_ERR("%s: connect: %s", name, strerror(error));
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return error;
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}
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}
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struct stream_class tcp_stream_class = {
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"tcp", /* name */
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tcp_open, /* open */
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NULL, /* close */
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NULL, /* connect */
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NULL, /* recv */
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NULL, /* send */
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NULL, /* run */
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NULL, /* run_wait */
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NULL, /* wait */
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};
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/* Passive TCP. */
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static int ptcp_accept(int fd, const struct sockaddr *sa, size_t sa_len,
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struct stream **streamp);
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static int
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ptcp_open(const char *name UNUSED, char *suffix, struct pstream **pstreamp)
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{
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int fd;
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fd = inet_open_passive(SOCK_STREAM, suffix, -1);
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if (fd < 0) {
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return -fd;
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} else {
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return new_fd_pstream("ptcp", fd, ptcp_accept, NULL, pstreamp);
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}
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}
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static int
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ptcp_accept(int fd, const struct sockaddr *sa, size_t sa_len,
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struct stream **streamp)
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{
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const struct sockaddr_in *sin = (const struct sockaddr_in *) sa;
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char name[128];
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if (sa_len == sizeof(struct sockaddr_in) && sin->sin_family == AF_INET) {
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sprintf(name, "tcp:"IP_FMT, IP_ARGS(&sin->sin_addr));
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sprintf(strchr(name, '\0'), ":%"PRIu16, ntohs(sin->sin_port));
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} else {
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strcpy(name, "tcp");
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}
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return new_tcp_stream(name, fd, 0, sin, streamp);
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}
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struct pstream_class ptcp_pstream_class = {
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"ptcp",
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ptcp_open,
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NULL,
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NULL,
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NULL
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};
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