398 lines
12 KiB
C
398 lines
12 KiB
C
/*
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* $Id: tcpip.c,v 1.72 1997/09/17 16:18:22 pst Exp $
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*
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* Copyright (c) 1995
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* Gary J Palmer. All rights reserved.
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* Copyright (c) 1996
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* Jordan K. Hubbard. 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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* verbatim and that no modifications are made prior to this
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* point in the file.
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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 AUTHORS ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/*
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* All kinds of hacking also performed by jkh on this code. Don't
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* blame Gary for every bogosity you see here.. :-)
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*
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* -jkh
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*/
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#include "sysinstall.h"
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#include <sys/param.h>
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/* The help file for the TCP/IP setup screen */
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#define TCP_HELPFILE "tcp"
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/* These are nasty, but they make the layout structure a lot easier ... */
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static char hostname[HOSTNAME_FIELD_LEN], domainname[HOSTNAME_FIELD_LEN],
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gateway[IPADDR_FIELD_LEN], nameserver[IPADDR_FIELD_LEN];
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static int okbutton, cancelbutton;
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static char ipaddr[IPADDR_FIELD_LEN], netmask[IPADDR_FIELD_LEN], extras[EXTRAS_FIELD_LEN];
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/* What the screen size is meant to be */
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#define TCP_DIALOG_Y 0
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#define TCP_DIALOG_X 8
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#define TCP_DIALOG_WIDTH COLS - 16
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#define TCP_DIALOG_HEIGHT LINES - 2
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static Layout layout[] = {
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#define LAYOUT_HOSTNAME 0
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{ 1, 2, 25, HOSTNAME_FIELD_LEN - 1,
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"Host:", "Your fully-qualified hostname, e.g. foo.bar.com",
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hostname, STRINGOBJ, NULL },
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#define LAYOUT_DOMAINNAME 1
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{ 1, 35, 20, HOSTNAME_FIELD_LEN - 1,
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"Domain:",
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"The name of the domain that your machine is in, e.g. bar.com",
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domainname, STRINGOBJ, NULL },
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#define LAYOUT_GATEWAY 2
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{ 5, 2, 18, IPADDR_FIELD_LEN - 1,
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"Gateway:",
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"IP address of host forwarding packets to non-local destinations",
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gateway, STRINGOBJ, NULL },
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#define LAYOUT_NAMESERVER 3
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{ 5, 35, 18, IPADDR_FIELD_LEN - 1,
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"Name server:", "IP address of your local DNS server",
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nameserver, STRINGOBJ, NULL },
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#define LAYOUT_IPADDR 4
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{ 10, 10, 18, IPADDR_FIELD_LEN - 1,
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"IP Address:",
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"The IP address to be used for this interface",
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ipaddr, STRINGOBJ, NULL },
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#define LAYOUT_NETMASK 5
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{ 10, 35, 18, IPADDR_FIELD_LEN - 1,
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"Netmask:",
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"The netmask for this interface, e.g. 0xffffff00 for a class C network",
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netmask, STRINGOBJ, NULL },
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#define LAYOUT_EXTRAS 6
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{ 14, 10, 37, HOSTNAME_FIELD_LEN - 1,
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"Extra options to ifconfig:",
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"Any interface-specific options to ifconfig you would like to add",
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extras, STRINGOBJ, NULL },
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#define LAYOUT_OKBUTTON 7
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{ 19, 15, 0, 0,
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"OK", "Select this if you are happy with these settings",
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&okbutton, BUTTONOBJ, NULL },
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#define LAYOUT_CANCELBUTTON 8
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{ 19, 35, 0, 0,
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"CANCEL", "Select this if you wish to cancel this screen",
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&cancelbutton, BUTTONOBJ, NULL },
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{ NULL },
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};
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#define _validByte(b) ((b) >= 0 && (b) <= 255)
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/* whine */
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static void
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feepout(char *msg)
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{
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beep();
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msgConfirm(msg);
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}
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/* Very basic IP address integrity check - could be drastically improved */
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static int
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verifyIP(char *ip)
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{
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int a, b, c, d;
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if (ip && sscanf(ip, "%d.%d.%d.%d", &a, &b, &c, &d) == 4 &&
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_validByte(a) && _validByte(b) && _validByte(c) &&
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_validByte(d) && (d != 255))
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return 1;
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else
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return 0;
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}
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/* Check for the settings on the screen - the per-interface stuff is
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moved to the main handling code now to do it on the fly - sigh */
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static int
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verifySettings(void)
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{
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if (!hostname[0])
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feepout("Must specify a host name of some sort!");
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else if (gateway[0] && strcmp(gateway, "NO") && !verifyIP(gateway))
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feepout("Invalid gateway IP address specified");
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else if (nameserver[0] && !verifyIP(nameserver))
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feepout("Invalid name server IP address specified");
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else if (netmask[0] && (netmask[0] < '0' && netmask[0] > '3'))
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feepout("Invalid netmask value");
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else if (ipaddr[0] && !verifyIP(ipaddr))
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feepout("Invalid IP address");
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else
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return 1;
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return 0;
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}
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/* This is it - how to get TCP setup values */
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int
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tcpOpenDialog(Device *devp)
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{
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WINDOW *ds_win, *save = NULL;
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ComposeObj *obj = NULL;
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int n = 0, cancel = FALSE;
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int max, ret = DITEM_SUCCESS;
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char *tmp;
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char title[80];
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/* Initialise vars from previous device values */
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if (devp->private) {
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DevInfo *di = (DevInfo *)devp->private;
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SAFE_STRCPY(ipaddr, di->ipaddr);
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SAFE_STRCPY(netmask, di->netmask);
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SAFE_STRCPY(extras, di->extras);
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}
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else { /* See if there are any defaults */
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char *cp;
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if (!ipaddr[0]) {
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if ((cp = variable_get(VAR_IPADDR)) != NULL)
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SAFE_STRCPY(ipaddr, cp);
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else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_IPADDR))) != NULL)
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SAFE_STRCPY(ipaddr, cp);
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}
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if (!netmask[0]) {
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if ((cp = variable_get(VAR_NETMASK)) != NULL)
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SAFE_STRCPY(netmask, cp);
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else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_NETMASK))) != NULL)
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SAFE_STRCPY(netmask, cp);
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}
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if (!extras[0]) {
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if ((cp = variable_get(VAR_EXTRAS)) != NULL)
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SAFE_STRCPY(extras, cp);
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else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_EXTRAS))) != NULL)
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SAFE_STRCPY(extras, cp);
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}
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}
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/* Look up values already recorded with the system, or blank the string variables ready to accept some new data */
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tmp = variable_get(VAR_HOSTNAME);
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if (tmp)
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SAFE_STRCPY(hostname, tmp);
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else
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bzero(hostname, sizeof(hostname));
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tmp = variable_get(VAR_DOMAINNAME);
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if (tmp)
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SAFE_STRCPY(domainname, tmp);
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else
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bzero(domainname, sizeof(domainname));
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tmp = variable_get(VAR_GATEWAY);
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if (tmp)
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SAFE_STRCPY(gateway, tmp);
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else
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bzero(gateway, sizeof(gateway));
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tmp = variable_get(VAR_NAMESERVER);
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if (tmp)
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SAFE_STRCPY(nameserver, tmp);
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else
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bzero(nameserver, sizeof(nameserver));
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save = savescr();
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/* If non-interactive, jump straight over the dialog crap and into config section */
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if (variable_get(VAR_NONINTERACTIVE) &&
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!variable_get(VAR_NETINTERACTIVE)) {
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if (!hostname[0])
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msgConfirm("WARNING: hostname variable not set and is a non-optional\n"
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"parameter. Please add this to your installation script\n"
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"or set the netInteractive variable (see sysinstall man page)");
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else
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goto netconfig;
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}
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/* Now do all the screen I/O */
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dialog_clear_norefresh();
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/* We need a curses window */
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if (!(ds_win = openLayoutDialog(TCP_HELPFILE, " Network Configuration ",
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TCP_DIALOG_X, TCP_DIALOG_Y, TCP_DIALOG_WIDTH, TCP_DIALOG_HEIGHT))) {
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beep();
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msgConfirm("Cannot open TCP/IP dialog window!!");
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restorescr(save);
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return DITEM_FAILURE;
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}
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/* Draw interface configuration box */
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draw_box(ds_win, TCP_DIALOG_Y + 9, TCP_DIALOG_X + 8, TCP_DIALOG_HEIGHT - 13, TCP_DIALOG_WIDTH - 17,
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dialog_attr, border_attr);
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wattrset(ds_win, dialog_attr);
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sprintf(title, " Configuration for Interface %s ", devp->name);
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mvwaddstr(ds_win, TCP_DIALOG_Y + 9, TCP_DIALOG_X + 14, title);
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/* Some more initialisation before we go into the main input loop */
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obj = initLayoutDialog(ds_win, layout, TCP_DIALOG_X, TCP_DIALOG_Y, &max);
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reenter:
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cancelbutton = okbutton = 0;
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while (layoutDialogLoop(ds_win, layout, &obj, &n, max, &cancelbutton, &cancel)) {
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/* Insert a default value for the netmask, 0xffffff00 is
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the most appropriate one (entire class C, or subnetted
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class A/B network). */
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if (netmask[0] == '\0') {
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strcpy(netmask, "255.255.255.0");
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RefreshStringObj(layout[LAYOUT_NETMASK].obj);
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}
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if (!index(hostname, '.') && domainname[0]) {
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strcat(hostname, ".");
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strcat(hostname, domainname);
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RefreshStringObj(layout[LAYOUT_HOSTNAME].obj);
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}
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else if (((tmp = index(hostname, '.')) != NULL) && !domainname[0]) {
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SAFE_STRCPY(domainname, tmp + 1);
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RefreshStringObj(layout[LAYOUT_DOMAINNAME].obj);
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}
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}
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if (!cancel && !verifySettings())
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goto reenter;
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/* Clear this crap off the screen */
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delwin(ds_win);
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dialog_clear_norefresh();
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use_helpfile(NULL);
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/* We actually need to inform the rest of sysinstall about this
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data now if the user hasn't selected cancel. Save the stuff
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out to the environment via the variable_set() mechanism */
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netconfig:
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if (!cancel) {
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DevInfo *di;
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char temp[512], ifn[255];
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char *ifaces;
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variable_set2(VAR_HOSTNAME, hostname);
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sethostname(hostname, strlen(hostname));
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if (domainname[0])
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variable_set2(VAR_DOMAINNAME, domainname);
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if (gateway[0])
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variable_set2(VAR_GATEWAY, gateway);
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if (nameserver[0])
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variable_set2(VAR_NAMESERVER, nameserver);
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if (!devp->private)
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devp->private = (DevInfo *)safe_malloc(sizeof(DevInfo));
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di = devp->private;
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SAFE_STRCPY(di->ipaddr, ipaddr);
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SAFE_STRCPY(di->netmask, netmask);
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SAFE_STRCPY(di->extras, extras);
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sprintf(temp, "inet %s %s netmask %s", ipaddr, extras, netmask);
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sprintf(ifn, "%s%s", VAR_IFCONFIG, devp->name);
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variable_set2(ifn, temp);
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ifaces = variable_get(VAR_INTERFACES);
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if (!ifaces)
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variable_set2(VAR_INTERFACES, ifaces = "lo0");
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/* Only add it if it's not there already */
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if (!strstr(ifaces, devp->name)) {
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sprintf(ifn, "%s %s", devp->name, ifaces);
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variable_set2(VAR_INTERFACES, ifn);
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}
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if (ipaddr[0])
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variable_set2(VAR_IPADDR, ipaddr);
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configResolv(); /* XXX this will do it on the MFS copy XXX */
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ret = DITEM_SUCCESS;
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}
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else
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ret = DITEM_FAILURE;
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restorescr(save);
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return ret;
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}
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static Device *NetDev;
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static int
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netHook(dialogMenuItem *self)
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{
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Device **devs;
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devs = deviceFindDescr(self->prompt, self->title, DEVICE_TYPE_NETWORK);
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if (devs) {
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if (DITEM_STATUS(tcpOpenDialog(devs[0])) != DITEM_FAILURE)
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NetDev = devs[0];
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else
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NetDev = NULL;
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}
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return devs ? DITEM_LEAVE_MENU : DITEM_FAILURE;
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}
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/* Get a network device */
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Device *
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tcpDeviceSelect(void)
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{
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DMenu *menu;
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Device **devs, *rval;
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int cnt;
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devs = deviceFind(NULL, DEVICE_TYPE_NETWORK);
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cnt = deviceCount(devs);
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rval = NULL;
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if (!cnt) {
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msgConfirm("No network devices available!");
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return NULL;
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}
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else if (!RunningAsInit) {
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if (!msgYesNo("Running multi-user, assume that the network is already configured?"))
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return devs[0];
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}
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if (cnt == 1) {
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if (DITEM_STATUS(tcpOpenDialog(devs[0]) == DITEM_SUCCESS))
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rval = devs[0];
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}
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else if (variable_get(VAR_NONINTERACTIVE) && variable_get(VAR_NETWORK_DEVICE)) {
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devs = deviceFind(variable_get(VAR_NETWORK_DEVICE), DEVICE_TYPE_NETWORK);
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cnt = deviceCount(devs);
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if (cnt) {
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if (DITEM_STATUS(tcpOpenDialog(devs[0]) == DITEM_SUCCESS))
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rval = devs[0];
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}
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}
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else {
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int status;
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menu = deviceCreateMenu(&MenuNetworkDevice, DEVICE_TYPE_NETWORK, netHook, NULL);
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if (!menu)
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msgFatal("Unable to create network device menu! Argh!");
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status = dmenuOpenSimple(menu, FALSE);
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free(menu);
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if (status)
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rval = NetDev;
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}
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return rval;
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}
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/* Do it from a menu that doesn't care about status */
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int
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tcpMenuSelect(dialogMenuItem *self)
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{
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Device *tmp;
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tmp = tcpDeviceSelect();
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if (tmp && !msgYesNo("Would you like to bring the %s interface up right now?", tmp->name))
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if (!tmp->init(tmp))
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msgConfirm("Initialization of %s device failed.", tmp->name);
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return DITEM_SUCCESS | DITEM_RESTORE;
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}
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