2 * Copyright (c) 1999 Brian Somers <brian@Awfulhak.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/usr.sbin/ppp/tcp.c,v 1.10.2.4 2002/09/01 02:12:32 brian Exp $
27 * $DragonFly: src/usr.sbin/ppp/tcp.c,v 1.2 2003/06/17 04:30:01 dillon Exp $
30 #include <sys/types.h>
31 #include <sys/socket.h>
32 #include <netinet/in.h>
33 #include <arpa/inet.h>
52 #include "throughput.h"
58 #include "descriptor.h"
63 tcp_OpenConnection(const char *name, char *host, char *port)
65 struct sockaddr_in dest;
69 dest.sin_family = AF_INET;
70 dest.sin_addr = GetIpAddr(host);
71 if (dest.sin_addr.s_addr == INADDR_NONE) {
72 log_Printf(LogWARN, "%s: %s: unknown host\n", name, host);
75 dest.sin_port = htons(atoi(port));
76 if (dest.sin_port == 0) {
77 sp = getservbyname(port, "tcp");
79 dest.sin_port = sp->s_port;
81 log_Printf(LogWARN, "%s: %s: unknown service\n", name, port);
85 log_Printf(LogPHASE, "%s: Connecting to %s:%s/tcp\n", name, host, port);
87 sock = socket(PF_INET, SOCK_STREAM, 0);
91 if (connect(sock, (struct sockaddr *)&dest, sizeof dest) < 0) {
92 log_Printf(LogWARN, "%s: connect: %s\n", name, strerror(errno));
100 static struct device tcpdevice = {
104 { CD_NOTREQUIRED, 0 },
122 tcp_iov2device(int type, struct physical *p, struct iovec *iov,
123 int *niov, int maxiov, int *auxfd, int *nauxfd)
125 if (type == TCP_DEVICE) {
126 free(iov[(*niov)++].iov_base);
127 physical_SetupStack(p, tcpdevice.name, PHYSICAL_FORCE_ASYNC);
135 tcp_Create(struct physical *p)
137 char *cp, *host, *port, *svc;
140 if ((cp = strchr(p->name.full, ':')) != NULL && !strchr(cp + 1, ':')) {
144 svc = strchr(port, '/');
145 if (svc && strcasecmp(svc, "/tcp")) {
150 p->fd--; /* We own the device but maybe can't use it - change fd */
153 if (*host && *port) {
154 p->fd = tcp_OpenConnection(p->link.name, host, port);
159 log_Printf(LogDEBUG, "%s: Opened tcp socket %s\n", p->link.name,
170 /* See if we're a tcp socket */
173 if (fstat(p->fd, &st) != -1 && (st.st_mode & S_IFSOCK)) {
177 if (getsockopt(p->fd, SOL_SOCKET, SO_TYPE, &type, &sz) == -1) {
178 log_Printf(LogPHASE, "%s: Link is a closed socket !\n", p->link.name);
184 if (sz == sizeof type && type == SOCK_STREAM) {
185 struct sockaddr_in sock;
186 struct sockaddr *sockp = (struct sockaddr *)&sock;
188 if (*p->name.full == '\0') {
190 if (getpeername(p->fd, sockp, &sz) != 0 ||
191 sz != sizeof(struct sockaddr_in) || sock.sin_family != AF_INET) {
192 log_Printf(LogDEBUG, "%s: Link is SOCK_STREAM, but not inet\n",
197 log_Printf(LogPHASE, "%s: Link is a tcp socket\n", p->link.name);
199 snprintf(p->name.full, sizeof p->name.full, "%s:%d/tcp",
200 inet_ntoa(sock.sin_addr), ntohs(sock.sin_port));
201 p->name.base = p->name.full;
203 physical_SetupStack(p, tcpdevice.name, PHYSICAL_FORCE_ASYNC);
204 if (p->cfg.cd.necessity != CD_DEFAULT)
205 log_Printf(LogWARN, "Carrier settings ignored\n");