540 lines
16 KiB
C
540 lines
16 KiB
C
/*
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* $Id: tcpip.c,v 1.8 1995/05/18 16:36:14 gpalmer 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Gary J Palmer
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* for the FreeBSD Project.
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* 4. The name of Gary J Palmer or the FreeBSD Project may not be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY GARY J PALMER ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL GARY J PALMER BE LIABLE FOR ANY
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* 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, LIFE OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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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 "rc.h"
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#include "sysinstall.h"
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/* These are nasty, but they make the layout structure a lot easier ... */
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static char hostname[256], domainname[256],
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gateway[32], nameserver[32], iface[8];
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static int okbutton, cancelbutton;
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static char ipaddr[32], netmask[32], extras[256];
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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 per interface set of records */
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typedef struct _interface {
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char ipaddr[32];
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char netmask[32];
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char extras[256]; /* Extra stuff for ifconfig (link0, etc) */
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int valid;
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Device *dptr;
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} Interface;
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/* The names and details of the available interfaces, for the list */
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Interface if_list[INTERFACE_MAX];
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char *iface_names[INTERFACE_MAX];
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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, 255,
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"Host name:", "The name of your machine on a network, 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, 255,
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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, 15,
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"Gateway:",
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"IP address of host forwarding packets to non-local hosts or nets",
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gateway, STRINGOBJ, NULL },
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#define LAYOUT_GATEWAY 2
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{ 5, 35, 18, 15,
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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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{ 9, 2, 9, 6,
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"Interface:",
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"Network devices found on boot (use <TAB> to exit from here)",
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iface, LISTOBJ, NULL },
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#define LAYOUT_IFACE 4
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{ 10, 18, 18, 15,
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"IP Address:",
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"The IP address to be used for this interface - use 127.0.0.1 for lo0",
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ipaddr, STRINGOBJ, NULL },
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#define LAYOUT_IPADDR 5
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{ 10, 37, 18, 15,
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"Netmask:",
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"The netmask for this interfaace, e.g. 0xffffff00 for a class C network",
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netmask, STRINGOBJ, NULL },
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#define LAYOUT_NETMASK 6
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{ 14, 18, 37, 255,
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"Extra options to ifconfig:",
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"Any interface-specific options to ifconfig you'd like to use",
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extras, STRINGOBJ, NULL },
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#define LAYOUT_EXTRAS 7
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{ 19, 10, 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 8
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{ 19, 30, 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 9
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{ NULL },
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};
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#define _validByte(b) ((b) > 0 && (b) < 255)
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/* A JKH special - inform the user of an unusal error in a controlled
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fashion */
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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))
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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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#if 0
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else if (!verifyIP(ipaddr))
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feepout("Invalid or missing value for IP address");
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#endif
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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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#if 0
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else if (netmask[0] < '0' || netmask[0] > '9')
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feepout("Invalid or missing netmask");
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#endif
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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(char *str)
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{
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WINDOW *ds_win;
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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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max, n_iface;
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char *tmp;
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Device **devs;
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char old_iface[8];
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char help[FILENAME_MAX];
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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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/* Look for net.devices for us to configure */
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devs = deviceFind(NULL, DEVICE_TYPE_NETWORK);
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if (!devs) {
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msgConfirm("Couldn't find any potential network devices!");
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return 0;
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}
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while (devs[n] != NULL) {
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iface_names[n] = (devs[n])->name;
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if_list[n].dptr = devs[n];
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++n;
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}
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n_iface = n;
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/* Setup a nice screen for us to splat stuff onto */
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systemHelpFile(TCP_HELPFILE, help);
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use_helpfile(help);
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draw_box(ds_win, TCP_DIALOG_Y, TCP_DIALOG_X,
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TCP_DIALOG_HEIGHT, TCP_DIALOG_WIDTH,
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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,
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" Network Configuration ");
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draw_box(ds_win, TCP_DIALOG_Y + 9, TCP_DIALOG_X + 16,
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TCP_DIALOG_HEIGHT - 13, TCP_DIALOG_WIDTH - 21,
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dialog_attr, border_attr);
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wattrset(ds_win, dialog_attr);
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mvwaddstr(ds_win, TCP_DIALOG_Y + 9, TCP_DIALOG_X + 24,
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" Per Interface Configuration ");
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/* Initialise vars so that dialog has something to chew on */
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strcpy(ipaddr, if_list[0].ipaddr);
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strcpy(netmask, if_list[0].netmask);
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strcpy(extras, if_list[0].extras);
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/* Look up values already recorded with the system, or blank the
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string variables ready to accept some new data */
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tmp = getenv(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 = getenv(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 = getenv(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 = getenv(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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case LISTOBJ:
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lt.obj = NewListObj(ds_win, lt.prompt, (char **) iface_names,
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lt.var, lt.y + TCP_DIALOG_Y,
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lt.x + TCP_DIALOG_X, lt.len, 12, n_iface);
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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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while (first->prev)
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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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strcpy(iface, iface_names[0]);
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if_list[0].valid = FALSE;
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strcpy(old_iface, iface);
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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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/* We are in the Hostname field - calculate the domainname */
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if (n == 0) {
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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[1].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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/* More special case handling - if we are at the interface
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list, move to the OK button - the user hasn't selected
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one of the entries in the list by pressing CR, so (s)he
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must be wanting to skip to <OK> & <CANCEL> */
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case KEY_DOWN:
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if (n == LAYOUT_EXTRAS) {
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n = LAYOUT_IFACE;
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obj = (((first->next)->next)->next)->next;
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} else 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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/* Same as KEY_DOWN, but dialog has already move us to the
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next object on the list, which makes this slightly
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different. */
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case SEL_TAB:
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if (n == LAYOUT_EXTRAS) {
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n = LAYOUT_IFACE;
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obj = (((first->next)->next)->next)->next;
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} else if (n < max) {
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++n;
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} else {
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n = 0;
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}
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/* This looks double dutch, but we have already MOVED onto
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the next field, so we special case around getting to
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that field, rather than moving off the previous
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one. Hence we are really testing for
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(n == LAYOUT_IFACE) */
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if (n == LAYOUT_IPADDR) {
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n = LAYOUT_OKBUTTON;
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obj = ((obj->next)->next)->next;
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}
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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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/* Has the user selected a new interface? */
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if (strcmp(old_iface, iface)) {
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/* Now go find the new location */
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n_iface = 0;
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while (strcmp(iface, iface_names[n_iface]) &&
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(iface_names[n_iface] != NULL))
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++n_iface;
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if (iface_names[n_iface] == NULL)
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msgFatal("Erk - run off the end of the list of interfaces!");
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strcpy(ipaddr, if_list[n_iface].ipaddr);
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strcpy(netmask, if_list[n_iface].netmask);
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strcpy(extras, if_list[n_iface].extras);
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if_list[n_iface].valid = FALSE;
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RefreshStringObj(layout[LAYOUT_IPADDR].obj);
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RefreshStringObj(layout[LAYOUT_NETMASK].obj);
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RefreshStringObj(layout[LAYOUT_EXTRAS].obj);
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strcpy(old_iface, iface);
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}
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/* Loop back to the interface list from the extras box -
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now we handle the case of saving out the data the user
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typed in (and also do basic verification of it's
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sanity) */
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if (n == LAYOUT_EXTRAS) {
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n = LAYOUT_IFACE;
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obj = (((first->next)->next)->next)->next;
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/* First, find the old value */
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n_iface = 0;
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while (strcmp(old_iface, iface_names[n_iface]) &&
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(iface_names[n_iface] != NULL))
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++n_iface;
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if (iface_names[n_iface] == NULL)
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msgFatal("Erk - run off the end of the list of interfaces!");
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/* Sanity check what the user supplied - this could probably
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be better :-( */
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if (!verifyIP(ipaddr)) {
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feepout("Invalid or missing IP address!");
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strcpy(iface, old_iface);
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n = LAYOUT_IFACE;
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obj = (((first->next)->next)->next)->next;
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RefreshListObj(layout[LAYOUT_IFACE].obj);
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}
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if (netmask[0] < '0' || netmask[0] > '9') {
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feepout("Invalid or missing netmask!");
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strcpy(iface, old_iface);
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n = LAYOUT_IFACE;
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obj = (((first->next)->next)->next)->next;
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RefreshListObj(layout[LAYOUT_IFACE].obj);
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}
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strcpy(if_list[n_iface].ipaddr, ipaddr);
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strcpy(if_list[n_iface].netmask, netmask);
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strcpy(if_list[n_iface].extras, extras);
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if_list[n_iface].valid = TRUE;
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if_list[n_iface].dptr->enabled = TRUE;
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} else 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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/* This doesn't seem to work anymore - dunno why. Foo */
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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) {
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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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}
|
|
}
|
|
|
|
/* Clear this crap off the screen */
|
|
dialog_clear();
|
|
refresh();
|
|
use_helpfile(NULL);
|
|
|
|
/* We actually need to inform the rest of sysinstall about this
|
|
data now - if the user hasn't selected cancel, save the stuff
|
|
out to the environment via the variable_set layers */
|
|
|
|
if (!cancel) {
|
|
int foo;
|
|
variable_set2(VAR_HOSTNAME, hostname);
|
|
variable_set2(VAR_DOMAINNAME, domainname);
|
|
if (gateway[0])
|
|
variable_set2(VAR_GATEWAY, gateway);
|
|
if (nameserver[0])
|
|
variable_set2(VAR_NAMESERVER, nameserver);
|
|
|
|
/* Loop over the per-interface data saving data which has been
|
|
validated ... */
|
|
for (foo = 0 ; foo < INTERFACE_MAX ; foo++) {
|
|
if (if_list[foo].valid == TRUE) {
|
|
char temp[512], ifn[64];
|
|
sprintf(temp, "inet %s %s netmask %s",
|
|
if_list[foo].ipaddr, if_list[foo].extras,
|
|
if_list[foo].netmask);
|
|
sprintf(ifn, "%s%s", VAR_IFCONFIG, iface_names[foo]);
|
|
variable_set2(ifn, temp);
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|