572 lines
16 KiB
C
572 lines
16 KiB
C
/*
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* $Id: tcpip.c,v 1.38 1996/04/30 05:25:15 jkh 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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*
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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 GARY J PALMER ``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 GARY J PALMER 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 <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/param.h>
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#include <string.h>
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#include <dialog.h>
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#include "ui_objects.h"
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#include "dir.h"
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#include "dialog.priv.h"
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#include "colors.h"
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#include "sysinstall.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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/* The screen layout structure */
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typedef struct _layout {
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int y; /* x & Y co-ordinates */
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int x;
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int len; /* The size of the dialog on the screen */
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int maxlen; /* How much the user can type in ... */
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char *prompt; /* The string for the prompt */
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char *help; /* The display for the help line */
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void *var; /* The var to set when this changes */
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int type; /* The type of the dialog to create */
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void *obj; /* The obj pointer returned by libdialog */
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} Layout;
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static Layout layout[] = {
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{ 1, 2, 25, HOSTNAME_FIELD_LEN - 1,
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"Host name:", "Your fully-qualified hostname, e.g. foo.bar.com",
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hostname, STRINGOBJ, NULL },
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#define LAYOUT_HOSTNAME 0
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{ 1, 35, 20, HOSTNAME_FIELD_LEN - 1,
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"Domain name:",
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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_DOMAINNAME 1
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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_GATEWAY 2
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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_NAMESERVER 3
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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_IPADDR 4
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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_NETMASK 5
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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 use",
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extras, STRINGOBJ, NULL },
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#define LAYOUT_EXTRAS 6
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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_OKBUTTON 7
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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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#define LAYOUT_CANCELBUTTON 8
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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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dialog_notify(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] && !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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int
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tcpInstallDevice(char *str)
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{
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Device **devs;
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Device *dp = NULL;
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/* Clip garbage off the ends */
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string_prune(str);
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str = string_skipwhite(str);
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if (!*str)
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return DITEM_FAILURE;
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devs = deviceFind(str, DEVICE_TYPE_NETWORK);
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if (devs && (dp = devs[0])) {
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char temp[512], ifn[255];
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if (!dp->private) {
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DevInfo *di;
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char *ipaddr, *netmask, *extras;
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di = dp->private = (DevInfo *)malloc(sizeof(DevInfo));
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if ((ipaddr = variable_get(string_concat3(VAR_IPADDR, "_", dp->name))) == NULL)
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ipaddr = variable_get(VAR_IPADDR);
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if ((netmask = variable_get(string_concat3(VAR_NETMASK, "_", dp->name))) == NULL)
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netmask = variable_get(VAR_NETMASK);
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if ((extras = variable_get(string_concat3(VAR_EXTRAS, "_", dp->name))) == NULL)
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extras = variable_get(VAR_EXTRAS);
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string_copy(di->ipaddr, ipaddr);
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string_copy(di->netmask, netmask);
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string_copy(di->extras, extras);
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if (ipaddr) {
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char *ifaces;
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sprintf(temp, "inet %s %s netmask %s", ipaddr, extras ? extras : "", netmask);
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sprintf(ifn, "%s%s", VAR_IFCONFIG, dp->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, dp->name)) {
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sprintf(ifn, "%s %s", dp->name, ifaces);
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variable_set2(VAR_INTERFACES, ifn);
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}
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}
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}
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mediaDevice = dp;
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}
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return dp ? DITEM_SUCCESS : DITEM_FAILURE;
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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;
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ComposeObj *obj = NULL;
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ComposeObj *first, *last;
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int n=0, quit=FALSE, cancel=FALSE, ret;
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int max;
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char *tmp;
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char help[FILENAME_MAX];
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char title[80];
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save = savescr();
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dialog_clear();
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/* We need a curses window */
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ds_win = newwin(LINES, COLS, 0, 0);
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if (ds_win == 0)
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msgFatal("Cannot open TCP/IP dialog window!!");
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/* Say where our help comes from */
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systemHelpFile(TCP_HELPFILE, help);
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use_helpfile(help);
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/* Setup a nice screen for us to splat stuff onto */
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draw_box(ds_win, TCP_DIALOG_Y, TCP_DIALOG_X, TCP_DIALOG_HEIGHT, TCP_DIALOG_WIDTH, dialog_attr, border_attr);
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wattrset(ds_win, dialog_attr);
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mvwaddstr(ds_win, TCP_DIALOG_Y, TCP_DIALOG_X + 20, " Network Configuration ");
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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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/* 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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strcpy(ipaddr, di->ipaddr);
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strcpy(netmask, di->netmask);
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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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strcpy(ipaddr, cp);
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else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_IPADDR))) != NULL)
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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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strcpy(netmask, cp);
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else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_NETMASK))) != NULL)
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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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strcpy(extras, cp);
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else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_EXTRAS))) != NULL)
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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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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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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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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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strcpy(nameserver, tmp);
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else
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bzero(nameserver, sizeof(nameserver));
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/* Loop over the layout list, create the objects, and add them
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onto the chain of objects that dialog uses for traversal*/
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n = 0;
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#define lt layout[n]
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while (lt.help != NULL) {
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switch (lt.type) {
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case STRINGOBJ:
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lt.obj = NewStringObj(ds_win, lt.prompt, lt.var,
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lt.y + TCP_DIALOG_Y, lt.x + TCP_DIALOG_X,
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lt.len, lt.maxlen);
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break;
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case BUTTONOBJ:
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lt.obj = NewButtonObj(ds_win, lt.prompt, lt.var,
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lt.y + TCP_DIALOG_Y, lt.x + TCP_DIALOG_X);
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break;
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default:
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msgFatal("Don't support this object yet!");
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}
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AddObj(&obj, lt.type, (void *) lt.obj);
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n++;
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}
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max = n - 1;
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/* Find the last object we can traverse to */
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last = obj;
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while (last->next)
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last = last->next;
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/* Find the first object in the list */
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first = obj;
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for (first = obj; first->prev; first = first->prev);
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/* Some more initialisation before we go into the main input loop */
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n = 0;
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cancelbutton = okbutton = 0;
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/* Incoming user data - DUCK! */
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while (!quit) {
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char help_line[80];
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int i, len = strlen(lt.help);
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/* Display the help line at the bottom of the screen */
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for (i = 0; i < 79; i++)
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help_line[i] = (i < len) ? lt.help[i] : ' ';
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help_line[i] = '\0';
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use_helpline(help_line);
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display_helpline(ds_win, LINES - 1, COLS - 1);
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/* Ask for libdialog to do its stuff */
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ret = PollObj(&obj);
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if (n == LAYOUT_HOSTNAME) {
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/* We are in the Hostname field - calculate the domainname */
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if ((tmp = index(hostname, '.')) != NULL) {
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strncpy(domainname, tmp + 1, strlen(tmp + 1));
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domainname[strlen(tmp+1)] = '\0';
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RefreshStringObj(layout[LAYOUT_DOMAINNAME].obj);
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}
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}
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else if (n == LAYOUT_IPADDR) {
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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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}
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else if (n == LAYOUT_DOMAINNAME) {
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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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}
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/* Handle special case stuff that libdialog misses. Sigh */
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switch (ret) {
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/* Bail out */
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case SEL_ESC:
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quit = TRUE, cancel=TRUE;
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break;
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/* This doesn't work for list dialogs. Oh well. Perhaps
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should special case the move from the OK button ``up''
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to make it go to the interface list, but then it gets
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awkward for the user to go back and correct screw up's
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in the per-interface section */
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case KEY_UP:
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if (obj->prev !=NULL ) {
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obj = obj->prev;
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--n;
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} else {
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obj = last;
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n = max;
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}
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break;
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case KEY_DOWN:
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if (obj->next != NULL) {
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obj = obj->next;
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++n;
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} else {
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obj = first;
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n = 0;
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}
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break;
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case SEL_TAB:
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if (n < max)
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++n;
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else
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n = 0;
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break;
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/* The user has pressed enter over a button object */
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case SEL_BUTTON:
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if (cancelbutton)
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cancel = TRUE, quit = TRUE;
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else {
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if (verifySettings())
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quit = TRUE;
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}
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break;
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/* Generic CR handler */
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case SEL_CR:
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if (n < max)
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++n;
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else
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n = 0;
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break;
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case SEL_BACKTAB:
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if (n)
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--n;
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else
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n = max;
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break;
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case KEY_F(1):
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display_helpfile();
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/* They tried some key combination we don't support - tell them! */
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default:
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beep();
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}
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/* BODGE ALERT! */
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if (((tmp = index(hostname, '.')) != NULL) && (strlen(domainname)==0)) {
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strncpy(domainname, tmp + 1, strlen(tmp + 1));
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domainname[strlen(tmp+1)] = '\0';
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RefreshStringObj(layout[1].obj);
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}
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}
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/* Clear this crap off the screen */
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dialog_clear();
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refresh();
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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 layers */
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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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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 *)malloc(sizeof(DevInfo));
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di = devp->private;
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strcpy(di->ipaddr, ipaddr);
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strcpy(di->netmask, netmask);
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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 */
|
|
if (!strstr(ifaces, devp->name)) {
|
|
sprintf(ifn, "%s %s", devp->name, ifaces);
|
|
variable_set2(VAR_INTERFACES, ifn);
|
|
}
|
|
if (ipaddr[0])
|
|
variable_set2(VAR_IPADDR, ipaddr);
|
|
restorescr(save);
|
|
return DITEM_SUCCESS;
|
|
}
|
|
restorescr(save);
|
|
return DITEM_FAILURE;
|
|
}
|
|
|
|
static int
|
|
netHook(dialogMenuItem *self)
|
|
{
|
|
Device **devs;
|
|
|
|
devs = deviceFind(self->prompt, DEVICE_TYPE_NETWORK);
|
|
if (devs) {
|
|
tcpOpenDialog(devs[0]);
|
|
mediaDevice = devs[0];
|
|
}
|
|
return devs ? DITEM_LEAVE_MENU : DITEM_FAILURE;
|
|
}
|
|
|
|
/* Get a network device */
|
|
Boolean
|
|
tcpDeviceSelect(void)
|
|
{
|
|
DMenu *menu;
|
|
Device **devs;
|
|
int cnt;
|
|
int status;
|
|
|
|
devs = deviceFind(NULL, DEVICE_TYPE_NETWORK);
|
|
cnt = deviceCount(devs);
|
|
if (!cnt) {
|
|
msgConfirm("No network devices available!");
|
|
status = FALSE;
|
|
}
|
|
else if (cnt == 1 || !RunningAsInit) {
|
|
/* If we're running in user mode, assume network already up */
|
|
if (RunningAsInit)
|
|
tcpOpenDialog(devs[0]);
|
|
else
|
|
msgDebug("Running multi-user, assuming that the network is already up\n");
|
|
mediaDevice = devs[0];
|
|
status = TRUE;
|
|
}
|
|
else {
|
|
menu = deviceCreateMenu(&MenuNetworkDevice, DEVICE_TYPE_NETWORK, netHook, NULL);
|
|
if (!menu)
|
|
msgFatal("Unable to create network device menu! Argh!");
|
|
status = dmenuOpenSimple(menu);
|
|
free(menu);
|
|
}
|
|
return status;
|
|
}
|
|
|
|
/* Do it from a menu that doesn't care about status */
|
|
int
|
|
tcpMenuSelect(dialogMenuItem *self)
|
|
{
|
|
(void)tcpDeviceSelect();
|
|
configResolv();
|
|
return DITEM_SUCCESS | DITEM_RECREATE | DITEM_RESTORE;
|
|
}
|