freebsd-dev/usr.sbin/sysinstall/tcpip.c
1996-09-01 08:17:14 +00:00

553 lines
16 KiB
C

/*
* $Id: tcpip.c,v 1.45 1996/08/03 10:11:56 jkh Exp $
*
* Copyright (c) 1995
* Gary J Palmer. All rights reserved.
* Copyright (c) 1996
* Jordan K. Hubbard. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* verbatim and that no modifications are made prior to this
* point in the file.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
/*
* All kinds of hacking also performed by jkh on this code. Don't
* blame Gary for every bogosity you see here.. :-)
*
* -jkh
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/param.h>
#include <string.h>
#include <dialog.h>
#include "ui_objects.h"
#include "dir.h"
#include "dialog.priv.h"
#include "colors.h"
#include "sysinstall.h"
/* The help file for the TCP/IP setup screen */
#define TCP_HELPFILE "tcp"
/* These are nasty, but they make the layout structure a lot easier ... */
static char hostname[HOSTNAME_FIELD_LEN], domainname[HOSTNAME_FIELD_LEN],
gateway[IPADDR_FIELD_LEN], nameserver[IPADDR_FIELD_LEN];
static int okbutton, cancelbutton;
static char ipaddr[IPADDR_FIELD_LEN], netmask[IPADDR_FIELD_LEN], extras[EXTRAS_FIELD_LEN];
/* What the screen size is meant to be */
#define TCP_DIALOG_Y 0
#define TCP_DIALOG_X 8
#define TCP_DIALOG_WIDTH COLS - 16
#define TCP_DIALOG_HEIGHT LINES - 2
/* The screen layout structure */
typedef struct _layout {
int y; /* x & Y co-ordinates */
int x;
int len; /* The size of the dialog on the screen */
int maxlen; /* How much the user can type in ... */
char *prompt; /* The string for the prompt */
char *help; /* The display for the help line */
void *var; /* The var to set when this changes */
int type; /* The type of the dialog to create */
void *obj; /* The obj pointer returned by libdialog */
} Layout;
static Layout layout[] = {
{ 1, 2, 25, HOSTNAME_FIELD_LEN - 1,
"Host:", "Your fully-qualified hostname, e.g. foo.bar.com",
hostname, STRINGOBJ, NULL },
#define LAYOUT_HOSTNAME 0
{ 1, 35, 20, HOSTNAME_FIELD_LEN - 1,
"Domain:",
"The name of the domain that your machine is in, e.g. bar.com",
domainname, STRINGOBJ, NULL },
#define LAYOUT_DOMAINNAME 1
{ 5, 2, 18, IPADDR_FIELD_LEN - 1,
"Gateway:",
"IP address of host forwarding packets to non-local destinations",
gateway, STRINGOBJ, NULL },
#define LAYOUT_GATEWAY 2
{ 5, 35, 18, IPADDR_FIELD_LEN - 1,
"Name server:", "IP address of your local DNS server",
nameserver, STRINGOBJ, NULL },
#define LAYOUT_NAMESERVER 3
{ 10, 10, 18, IPADDR_FIELD_LEN - 1,
"IP Address:",
"The IP address to be used for this interface",
ipaddr, STRINGOBJ, NULL },
#define LAYOUT_IPADDR 4
{ 10, 35, 18, IPADDR_FIELD_LEN - 1,
"Netmask:",
"The netmask for this interface, e.g. 0xffffff00 for a class C network",
netmask, STRINGOBJ, NULL },
#define LAYOUT_NETMASK 5
{ 14, 10, 37, HOSTNAME_FIELD_LEN - 1,
"Extra options to ifconfig:",
"Any interface-specific options to ifconfig you would like to add",
extras, STRINGOBJ, NULL },
#define LAYOUT_EXTRAS 6
{ 19, 15, 0, 0,
"OK", "Select this if you are happy with these settings",
&okbutton, BUTTONOBJ, NULL },
#define LAYOUT_OKBUTTON 7
{ 19, 35, 0, 0,
"CANCEL", "Select this if you wish to cancel this screen",
&cancelbutton, BUTTONOBJ, NULL },
#define LAYOUT_CANCELBUTTON 8
{ NULL },
};
#define _validByte(b) ((b) >= 0 && (b) <= 255)
/* whine */
static void
feepout(char *msg)
{
beep();
dialog_notify(msg);
}
/* Very basic IP address integrity check - could be drastically improved */
static int
verifyIP(char *ip)
{
int a, b, c, d;
if (ip && sscanf(ip, "%d.%d.%d.%d", &a, &b, &c, &d) == 4 &&
_validByte(a) && _validByte(b) && _validByte(c) &&
_validByte(d) && (d != 255))
return 1;
else
return 0;
}
/* Check for the settings on the screen - the per interface stuff is
moved to the main handling code now to do it on the fly - sigh */
static int
verifySettings(void)
{
if (!hostname[0])
feepout("Must specify a host name of some sort!");
else if (gateway[0] && !verifyIP(gateway))
feepout("Invalid gateway IP address specified");
else if (nameserver[0] && !verifyIP(nameserver))
feepout("Invalid name server IP address specified");
else if (netmask[0] && (netmask[0] < '0' && netmask[0] > '3'))
feepout("Invalid netmask value");
else if (ipaddr[0] && !verifyIP(ipaddr))
feepout("Invalid IP address");
else
return 1;
return 0;
}
int
tcpInstallDevice(char *str)
{
Device **devs;
Device *dp = NULL;
/* Clip garbage off the ends */
string_prune(str);
str = string_skipwhite(str);
if (!*str)
return DITEM_FAILURE;
devs = deviceFind(str, DEVICE_TYPE_NETWORK);
if (devs && (dp = devs[0])) {
char temp[512], ifn[255];
if (!dp->private) {
DevInfo *di;
char *ipaddr, *netmask, *extras;
di = dp->private = (DevInfo *)malloc(sizeof(DevInfo));
if ((ipaddr = variable_get(string_concat3(VAR_IPADDR, "_", dp->name))) == NULL)
ipaddr = variable_get(VAR_IPADDR);
if ((netmask = variable_get(string_concat3(VAR_NETMASK, "_", dp->name))) == NULL)
netmask = variable_get(VAR_NETMASK);
if ((extras = variable_get(string_concat3(VAR_EXTRAS, "_", dp->name))) == NULL)
extras = variable_get(VAR_EXTRAS);
string_copy(di->ipaddr, ipaddr);
string_copy(di->netmask, netmask);
string_copy(di->extras, extras);
if (ipaddr) {
char *ifaces;
sprintf(temp, "inet %s %s netmask %s", ipaddr, extras ? extras : "", netmask);
sprintf(ifn, "%s%s", VAR_IFCONFIG, dp->name);
variable_set2(ifn, temp);
ifaces = variable_get(VAR_INTERFACES);
if (!ifaces)
variable_set2(VAR_INTERFACES, ifaces = "lo0");
/* Only add it if it's not there already */
if (!strstr(ifaces, dp->name)) {
sprintf(ifn, "%s %s", dp->name, ifaces);
variable_set2(VAR_INTERFACES, ifn);
}
}
}
mediaDevice = dp;
}
return dp ? DITEM_SUCCESS : DITEM_FAILURE;
}
/* This is it - how to get TCP setup values */
int
tcpOpenDialog(Device *devp)
{
WINDOW *ds_win, *save;
ComposeObj *obj = NULL;
ComposeObj *first, *last;
int n=0, quit=FALSE, cancel=FALSE, ret;
int max;
char *tmp;
char help[FILENAME_MAX];
char title[80];
save = savescr();
dialog_clear_norefresh();
/* We need a curses window */
ds_win = newwin(LINES, COLS, 0, 0);
if (ds_win == 0)
msgFatal("Cannot open TCP/IP dialog window!!");
/* Say where our help comes from */
systemHelpFile(TCP_HELPFILE, help);
use_helpfile(help);
/* Setup a nice screen for us to splat stuff onto */
draw_box(ds_win, TCP_DIALOG_Y, TCP_DIALOG_X, TCP_DIALOG_HEIGHT, TCP_DIALOG_WIDTH, dialog_attr, border_attr);
wattrset(ds_win, dialog_attr);
mvwaddstr(ds_win, TCP_DIALOG_Y, TCP_DIALOG_X + 20, " Network Configuration ");
draw_box(ds_win, TCP_DIALOG_Y + 9, TCP_DIALOG_X + 8, TCP_DIALOG_HEIGHT - 13, TCP_DIALOG_WIDTH - 17,
dialog_attr, border_attr);
wattrset(ds_win, dialog_attr);
sprintf(title, " Configuration for Interface %s ", devp->name);
mvwaddstr(ds_win, TCP_DIALOG_Y + 9, TCP_DIALOG_X + 14, title);
/* Initialise vars from previous device values */
if (devp->private) {
DevInfo *di = (DevInfo *)devp->private;
strcpy(ipaddr, di->ipaddr);
strcpy(netmask, di->netmask);
strcpy(extras, di->extras);
}
else { /* See if there are any defaults */
char *cp;
if (!ipaddr[0]) {
if ((cp = variable_get(VAR_IPADDR)) != NULL)
strcpy(ipaddr, cp);
else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_IPADDR))) != NULL)
strcpy(ipaddr, cp);
}
if (!netmask[0]) {
if ((cp = variable_get(VAR_NETMASK)) != NULL)
strcpy(netmask, cp);
else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_NETMASK))) != NULL)
strcpy(netmask, cp);
}
if (!extras[0]) {
if ((cp = variable_get(VAR_EXTRAS)) != NULL)
strcpy(extras, cp);
else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_EXTRAS))) != NULL)
strcpy(extras, cp);
}
}
/* Look up values already recorded with the system, or blank the string variables ready to accept some new data */
tmp = variable_get(VAR_HOSTNAME);
if (tmp)
strcpy(hostname, tmp);
else
bzero(hostname, sizeof(hostname));
tmp = variable_get(VAR_DOMAINNAME);
if (tmp)
strcpy(domainname, tmp);
else
bzero(domainname, sizeof(domainname));
tmp = variable_get(VAR_GATEWAY);
if (tmp)
strcpy(gateway, tmp);
else
bzero(gateway, sizeof(gateway));
tmp = variable_get(VAR_NAMESERVER);
if (tmp)
strcpy(nameserver, tmp);
else
bzero(nameserver, sizeof(nameserver));
/* Loop over the layout list, create the objects, and add them
onto the chain of objects that dialog uses for traversal*/
n = 0;
#define lt layout[n]
while (lt.help != NULL) {
switch (lt.type) {
case STRINGOBJ:
lt.obj = NewStringObj(ds_win, lt.prompt, lt.var,
lt.y + TCP_DIALOG_Y, lt.x + TCP_DIALOG_X,
lt.len, lt.maxlen);
break;
case BUTTONOBJ:
lt.obj = NewButtonObj(ds_win, lt.prompt, lt.var,
lt.y + TCP_DIALOG_Y, lt.x + TCP_DIALOG_X);
break;
default:
msgFatal("Don't support this object yet!");
}
AddObj(&obj, lt.type, (void *) lt.obj);
n++;
}
max = n - 1;
/* Find the last object we can traverse to */
last = obj;
while (last->next)
last = last->next;
/* Find the first object in the list */
first = obj;
for (first = obj; first->prev; first = first->prev);
/* Some more initialisation before we go into the main input loop */
n = 0;
cancelbutton = okbutton = 0;
/* Incoming user data - DUCK! */
while (!quit) {
char help_line[80];
int i, len = strlen(lt.help);
/* Display the help line at the bottom of the screen */
for (i = 0; i < 79; i++)
help_line[i] = (i < len) ? lt.help[i] : ' ';
help_line[i] = '\0';
use_helpline(help_line);
display_helpline(ds_win, LINES - 1, COLS - 1);
/* Ask for libdialog to do its stuff */
ret = PollObj(&obj);
if (n == LAYOUT_HOSTNAME) {
/* We are in the Hostname field - calculate the domainname */
if ((tmp = index(hostname, '.')) != NULL) {
strncpy(domainname, tmp + 1, strlen(tmp + 1));
domainname[strlen(tmp+1)] = '\0';
RefreshStringObj(layout[LAYOUT_DOMAINNAME].obj);
}
}
else if (n == LAYOUT_IPADDR) {
/* Insert a default value for the netmask, 0xffffff00 is
the most appropriate one (entire class C, or subnetted
class A/B network). */
if(netmask[0] == '\0') {
strcpy(netmask, "255.255.255.0");
RefreshStringObj(layout[LAYOUT_NETMASK].obj);
}
}
else if (n == LAYOUT_DOMAINNAME) {
if (!index(hostname, '.') && domainname[0]) {
strcat(hostname, ".");
strcat(hostname, domainname);
RefreshStringObj(layout[LAYOUT_HOSTNAME].obj);
}
}
/* Handle special case stuff that libdialog misses. Sigh */
switch (ret) {
/* Bail out */
case SEL_ESC:
quit = TRUE, cancel=TRUE;
break;
/* This doesn't work for list dialogs. Oh well. Perhaps
should special case the move from the OK button ``up''
to make it go to the interface list, but then it gets
awkward for the user to go back and correct screw up's
in the per-interface section */
case KEY_DOWN:
case SEL_TAB:
case SEL_CR:
if (n < max)
++n;
else
n = 0;
break;
/* The user has pressed enter over a button object */
case SEL_BUTTON:
if (cancelbutton)
cancel = TRUE, quit = TRUE;
else {
if (verifySettings())
quit = TRUE;
}
break;
case KEY_UP:
case SEL_BACKTAB:
if (n)
--n;
else
n = max;
break;
case KEY_F(1):
display_helpfile();
/* They tried some key combination we don't support - tell them! */
default:
beep();
}
/* BODGE ALERT! */
if (((tmp = index(hostname, '.')) != NULL) && (strlen(domainname)==0)) {
strncpy(domainname, tmp + 1, strlen(tmp + 1));
domainname[strlen(tmp+1)] = '\0';
RefreshStringObj(layout[1].obj);
}
}
/* Clear this crap off the screen */
dialog_clear_norefresh();
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) {
DevInfo *di;
char temp[512], ifn[255];
char *ifaces;
variable_set2(VAR_HOSTNAME, hostname);
sethostname(hostname, strlen(hostname));
if (domainname[0])
variable_set2(VAR_DOMAINNAME, domainname);
if (gateway[0])
variable_set2(VAR_GATEWAY, gateway);
if (nameserver[0])
variable_set2(VAR_NAMESERVER, nameserver);
if (!devp->private)
devp->private = (DevInfo *)safe_malloc(sizeof(DevInfo));
di = devp->private;
strcpy(di->ipaddr, ipaddr);
strcpy(di->netmask, netmask);
strcpy(di->extras, extras);
sprintf(temp, "inet %s %s netmask %s", ipaddr, extras, netmask);
sprintf(ifn, "%s%s", VAR_IFCONFIG, devp->name);
variable_set2(ifn, temp);
ifaces = variable_get(VAR_INTERFACES);
if (!ifaces)
variable_set2(VAR_INTERFACES, ifaces = "lo0");
/* 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) {
if (DITEM_STATUS(tcpOpenDialog(devs[0])) != DITEM_FAILURE)
mediaDevice = devs[0];
else
devs = NULL;
}
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 && !Fake)) {
/* If we're running in user mode, assume network already up */
if (!RunningAsInit) {
if (DITEM_STATUS(tcpOpenDialog(devs[0]) == DITEM_FAILURE))
return FALSE;
}
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, FALSE);
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;
}