ab7d88ae2d
the layering. We now ``stack'' layers as soon as we open the device (when we figure out what we're dealing with). A static set of `dispatch' routines are also declared for dealing with incoming packets after they've been `pulled' up through the stacked layers. Physical devices are now assigned handlers based on the device type when they're opened. For the moment there are three device types; ttys, execs and tcps. o Increment version number to 2.2 o Make an entry in [uw]tmp for non-tty -direct invocations (after pap/chap authentication). o Make throughput counters quad_t's o Account for the absolute number of mbuf malloc()s and free()s in ``show mem''. o ``show modem'' becomes ``show physical''.
135 lines
3.5 KiB
C
135 lines
3.5 KiB
C
/*-
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* Copyright (c) 1999 Brian Somers <brian@Awfulhak.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id:$
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <termios.h>
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#include <unistd.h>
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#include "layer.h"
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#include "defs.h"
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#include "mbuf.h"
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#include "log.h"
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#include "sync.h"
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#include "timer.h"
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#include "lqr.h"
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#include "hdlc.h"
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#include "throughput.h"
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#include "fsm.h"
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#include "lcp.h"
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#include "ccp.h"
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#include "link.h"
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#include "async.h"
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#include "descriptor.h"
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#include "physical.h"
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#include "tcp.h"
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static int
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OpenConnection(const char *name, char *host, char *port)
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{
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struct sockaddr_in dest;
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int sock;
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struct servent *sp;
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dest.sin_family = AF_INET;
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dest.sin_addr.s_addr = inet_addr(host);
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dest.sin_addr = GetIpAddr(host);
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if (dest.sin_addr.s_addr == INADDR_NONE) {
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log_Printf(LogWARN, "%s: %s: unknown host\n", name, host);
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return (-1);
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}
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dest.sin_port = htons(atoi(port));
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if (dest.sin_port == 0) {
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sp = getservbyname(port, "tcp");
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if (sp) {
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dest.sin_port = sp->s_port;
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} else {
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log_Printf(LogWARN, "%s: %s: unknown service\n", name, port);
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return (-1);
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}
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}
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log_Printf(LogPHASE, "%s: Connecting to %s:%s\n", name, host, port);
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sock = socket(PF_INET, SOCK_STREAM, 0);
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if (sock < 0) {
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return (sock);
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}
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if (connect(sock, (struct sockaddr *)&dest, sizeof dest) < 0) {
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log_Printf(LogWARN, "%s: connect: %s\n", name, strerror(errno));
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close(sock);
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return (-1);
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}
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return (sock);
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}
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static int
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tcp_Open(struct physical *p)
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{
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char *cp, *host, *port;
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if ((cp = strchr(p->name.full, ':')) != NULL) {
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*cp = '\0';
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host = p->name.full;
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port = cp + 1;
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if (*host && *port) {
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p->fd = OpenConnection(p->link.name, host, port);
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*cp = ':'; /* Don't destroy name.full */
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if (p->fd >= 0) {
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log_Printf(LogDEBUG, "%s: Opened socket %s\n", p->link.name,
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p->name.full);
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physical_SetupStack(p, 1);
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return 1;
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}
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} else
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*cp = ':'; /* Don't destroy name.full */
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}
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return 0;
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}
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const struct device tcpdevice = {
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TTY_DEVICE,
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"tcp",
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tcp_Open,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL
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};
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