484 lines
14 KiB
C
484 lines
14 KiB
C
/*
|
|
* $Id: tcpip.c,v 1.87 1999/08/07 01:43:39 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 "sysinstall.h"
|
|
#include <sys/param.h>
|
|
#include <netdb.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
|
|
|
|
static Layout layout[] = {
|
|
#define LAYOUT_HOSTNAME 0
|
|
{ 1, 2, 25, HOSTNAME_FIELD_LEN - 1,
|
|
"Host:", "Your fully-qualified hostname, e.g. foo.bar.com",
|
|
hostname, STRINGOBJ, NULL },
|
|
#define LAYOUT_DOMAINNAME 1
|
|
{ 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_GATEWAY 2
|
|
{ 5, 2, 18, IPADDR_FIELD_LEN - 1,
|
|
"Gateway:",
|
|
"IP address of host forwarding packets to non-local destinations",
|
|
gateway, STRINGOBJ, NULL },
|
|
#define LAYOUT_NAMESERVER 3
|
|
{ 5, 35, 18, IPADDR_FIELD_LEN - 1,
|
|
"Name server:", "IP address of your local DNS server",
|
|
nameserver, STRINGOBJ, NULL },
|
|
#define LAYOUT_IPADDR 4
|
|
{ 10, 10, 18, IPADDR_FIELD_LEN - 1,
|
|
"IP Address:",
|
|
"The IP address to be used for this interface",
|
|
ipaddr, STRINGOBJ, NULL },
|
|
#define LAYOUT_NETMASK 5
|
|
{ 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_EXTRAS 6
|
|
{ 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_OKBUTTON 7
|
|
{ 19, 15, 0, 0,
|
|
"OK", "Select this if you are happy with these settings",
|
|
&okbutton, BUTTONOBJ, NULL },
|
|
#define LAYOUT_CANCELBUTTON 8
|
|
{ 19, 35, 0, 0,
|
|
"CANCEL", "Select this if you wish to cancel this screen",
|
|
&cancelbutton, BUTTONOBJ, NULL },
|
|
{ NULL },
|
|
};
|
|
|
|
#define _validByte(b) ((b) >= 0 && (b) <= 255)
|
|
|
|
/* whine */
|
|
static void
|
|
feepout(char *msg)
|
|
{
|
|
beep();
|
|
msgConfirm(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] && strcmp(gateway, "NO") && !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;
|
|
}
|
|
|
|
static void
|
|
dhcpGetInfo(Device *devp)
|
|
{
|
|
/* If it fails, do it the old-fashioned way */
|
|
if (dhcpParseLeases("/var/db/dhclient.leases", hostname, domainname,
|
|
nameserver, ipaddr, gateway, netmask) == -1) {
|
|
FILE *ifp;
|
|
char *cp, cmd[256], data[2048];
|
|
int i, j;
|
|
|
|
/* Bah, now we have to kludge getting the information from ifconfig */
|
|
snprintf(cmd, sizeof cmd, "ifconfig %s", devp->name);
|
|
ifp = popen(cmd, "r");
|
|
if (ifp) {
|
|
j = fread(data, 1, sizeof(data), ifp);
|
|
fclose(ifp);
|
|
if (j < 0) /* paranoia */
|
|
j = 0;
|
|
data[j] = '\0';
|
|
if (isDebug())
|
|
msgDebug("DHCP configured interface returns %s\n", data);
|
|
/* XXX This is gross as it assumes a certain ordering to
|
|
ifconfig's output! XXX */
|
|
if ((cp = strstr(data, "inet")) != NULL) {
|
|
i = 0;
|
|
cp += 5; /* move over keyword */
|
|
while (*cp != ' ')
|
|
ipaddr[i++] = *(cp++);
|
|
ipaddr[i] = '\0';
|
|
if (!strncmp(++cp, "netmask", 7)) {
|
|
i = 0;
|
|
cp += 8;
|
|
while (*cp != ' ')
|
|
netmask[i++] = *(cp++);
|
|
netmask[i] = '\0';
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* If we didn't get a name server value, hunt for it in resolv.conf */
|
|
if (!nameserver[0] && file_readable("/etc/resolv.conf"))
|
|
configEnvironmentResolv("/etc/resolv.conf");
|
|
if (hostname[0])
|
|
variable_set2(VAR_HOSTNAME, hostname, 0);
|
|
}
|
|
|
|
/* This is it - how to get TCP setup values */
|
|
int
|
|
tcpOpenDialog(Device *devp)
|
|
{
|
|
WINDOW *ds_win, *save = NULL;
|
|
ComposeObj *obj = NULL;
|
|
int n = 0, filled = 0, cancel = FALSE;
|
|
int max, ret = DITEM_SUCCESS;
|
|
int use_dhcp = FALSE;
|
|
char *tmp;
|
|
char title[80];
|
|
|
|
/* Initialise vars from previous device values */
|
|
if (devp->private) {
|
|
DevInfo *di = (DevInfo *)devp->private;
|
|
|
|
SAFE_STRCPY(ipaddr, di->ipaddr);
|
|
SAFE_STRCPY(netmask, di->netmask);
|
|
SAFE_STRCPY(extras, di->extras);
|
|
use_dhcp = di->use_dhcp;
|
|
}
|
|
else { /* See if there are any defaults */
|
|
char *cp;
|
|
|
|
/* First try a DHCP scan if such behavior is desired */
|
|
if (!variable_cmp(VAR_TRY_DHCP, "YES") || !msgYesNo("Do you want to try DHCP configuration of the interface?")) {
|
|
int k;
|
|
|
|
Mkdir("/var/db");
|
|
Mkdir("/var/run");
|
|
Mkdir("/tmp");
|
|
msgNotify("Scanning for DHCP servers...");
|
|
for (k = 1; k < 4; k++) {
|
|
if (0 == vsystem("dhclient -1 %s", devp->name)) {
|
|
dhcpGetInfo(devp);
|
|
use_dhcp = TRUE;
|
|
break;
|
|
}
|
|
msgNotify("Scanning for DHCP servers... Retry: %d", k);
|
|
}
|
|
}
|
|
|
|
/* Get old IP address from variable space, if available */
|
|
if (!ipaddr[0]) {
|
|
if ((cp = variable_get(VAR_IPADDR)) != NULL)
|
|
SAFE_STRCPY(ipaddr, cp);
|
|
else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_IPADDR))) != NULL)
|
|
SAFE_STRCPY(ipaddr, cp);
|
|
}
|
|
|
|
/* Get old netmask from variable space, if available */
|
|
if (!netmask[0]) {
|
|
if ((cp = variable_get(VAR_NETMASK)) != NULL)
|
|
SAFE_STRCPY(netmask, cp);
|
|
else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_NETMASK))) != NULL)
|
|
SAFE_STRCPY(netmask, cp);
|
|
}
|
|
|
|
/* Get old extras string from variable space, if available */
|
|
if (!extras[0]) {
|
|
if ((cp = variable_get(VAR_EXTRAS)) != NULL)
|
|
SAFE_STRCPY(extras, cp);
|
|
else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_EXTRAS))) != NULL)
|
|
SAFE_STRCPY(extras, cp);
|
|
}
|
|
}
|
|
|
|
/* Look up values already recorded with the system, or blank the string variables ready to accept some new data */
|
|
if (!hostname[0]) {
|
|
tmp = variable_get(VAR_HOSTNAME);
|
|
if (tmp)
|
|
SAFE_STRCPY(hostname, tmp);
|
|
}
|
|
if (!domainname[0]) {
|
|
tmp = variable_get(VAR_DOMAINNAME);
|
|
if (tmp)
|
|
SAFE_STRCPY(domainname, tmp);
|
|
}
|
|
if (!gateway[0]) {
|
|
tmp = variable_get(VAR_GATEWAY);
|
|
if (tmp)
|
|
SAFE_STRCPY(gateway, tmp);
|
|
}
|
|
if (!nameserver[0]) {
|
|
tmp = variable_get(VAR_NAMESERVER);
|
|
if (tmp)
|
|
SAFE_STRCPY(nameserver, tmp);
|
|
}
|
|
|
|
save = savescr();
|
|
/* If non-interactive, jump straight over the dialog crap and into config section */
|
|
if (variable_get(VAR_NONINTERACTIVE) &&
|
|
!variable_get(VAR_NETINTERACTIVE)) {
|
|
if (!hostname[0])
|
|
msgConfirm("WARNING: hostname variable not set and is a non-optional\n"
|
|
"parameter. Please add this to your installation script\n"
|
|
"or set the netInteractive variable (see sysinstall man page)");
|
|
else
|
|
goto netconfig;
|
|
}
|
|
|
|
/* Now do all the screen I/O */
|
|
dialog_clear_norefresh();
|
|
|
|
/* We need a curses window */
|
|
if (!(ds_win = openLayoutDialog(TCP_HELPFILE, " Network Configuration ",
|
|
TCP_DIALOG_X, TCP_DIALOG_Y, TCP_DIALOG_WIDTH, TCP_DIALOG_HEIGHT))) {
|
|
beep();
|
|
msgConfirm("Cannot open TCP/IP dialog window!!");
|
|
restorescr(save);
|
|
return DITEM_FAILURE;
|
|
}
|
|
|
|
/* Draw interface configuration box */
|
|
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);
|
|
|
|
/* Some more initialisation before we go into the main input loop */
|
|
obj = initLayoutDialog(ds_win, layout, TCP_DIALOG_X, TCP_DIALOG_Y, &max);
|
|
|
|
reenter:
|
|
cancelbutton = okbutton = 0;
|
|
while (layoutDialogLoop(ds_win, layout, &obj, &n, max, &cancelbutton, &cancel)) {
|
|
/* Prevent this from being irritating if user really means NO */
|
|
if (filled < 3) {
|
|
/* 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]) {
|
|
strcpy(netmask, "255.255.255.0");
|
|
RefreshStringObj(layout[LAYOUT_NETMASK].obj);
|
|
++filled;
|
|
}
|
|
if (!index(hostname, '.') && domainname[0]) {
|
|
strcat(hostname, ".");
|
|
strcat(hostname, domainname);
|
|
RefreshStringObj(layout[LAYOUT_HOSTNAME].obj);
|
|
++filled;
|
|
}
|
|
else if (((tmp = index(hostname, '.')) != NULL) && !domainname[0]) {
|
|
SAFE_STRCPY(domainname, tmp + 1);
|
|
RefreshStringObj(layout[LAYOUT_DOMAINNAME].obj);
|
|
++filled;
|
|
}
|
|
}
|
|
}
|
|
if (!cancel && !verifySettings())
|
|
goto reenter;
|
|
|
|
/* Clear this crap off the screen */
|
|
delwin(ds_win);
|
|
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() mechanism */
|
|
|
|
netconfig:
|
|
if (!cancel) {
|
|
DevInfo *di;
|
|
char temp[512], ifn[255];
|
|
char *ifaces;
|
|
|
|
if (hostname[0]) {
|
|
variable_set2(VAR_HOSTNAME, hostname, use_dhcp ? 0 : 1);
|
|
sethostname(hostname, strlen(hostname));
|
|
}
|
|
if (domainname[0])
|
|
variable_set2(VAR_DOMAINNAME, domainname, 0);
|
|
if (gateway[0])
|
|
variable_set2(VAR_GATEWAY, gateway, use_dhcp ? 0 : 1);
|
|
if (nameserver[0])
|
|
variable_set2(VAR_NAMESERVER, nameserver, 0);
|
|
if (ipaddr[0])
|
|
variable_set2(VAR_IPADDR, ipaddr, 0);
|
|
|
|
if (!devp->private)
|
|
devp->private = (DevInfo *)safe_malloc(sizeof(DevInfo));
|
|
di = devp->private;
|
|
SAFE_STRCPY(di->ipaddr, ipaddr);
|
|
SAFE_STRCPY(di->netmask, netmask);
|
|
SAFE_STRCPY(di->extras, extras);
|
|
di->use_dhcp = use_dhcp;
|
|
|
|
sprintf(ifn, "%s%s", VAR_IFCONFIG, devp->name);
|
|
if (use_dhcp)
|
|
sprintf(temp, "DHCP");
|
|
else
|
|
sprintf(temp, "inet %s %s netmask %s", ipaddr, extras, netmask);
|
|
variable_set2(ifn, temp, 1);
|
|
ifaces = variable_get(VAR_INTERFACES);
|
|
if (!ifaces)
|
|
variable_set2(VAR_INTERFACES, ifaces = "lo0", 1);
|
|
/* 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, 1);
|
|
}
|
|
if (!use_dhcp)
|
|
configResolv(NULL); /* XXX this will do it on the MFS copy XXX */
|
|
ret = DITEM_SUCCESS;
|
|
}
|
|
else
|
|
ret = DITEM_FAILURE;
|
|
restorescr(save);
|
|
return ret;
|
|
}
|
|
|
|
static Device *NetDev;
|
|
|
|
static int
|
|
netHook(dialogMenuItem *self)
|
|
{
|
|
Device **devs;
|
|
|
|
devs = deviceFindDescr(self->prompt, self->title, DEVICE_TYPE_NETWORK);
|
|
if (devs) {
|
|
if (DITEM_STATUS(tcpOpenDialog(devs[0])) != DITEM_FAILURE)
|
|
NetDev = devs[0];
|
|
else
|
|
NetDev = NULL;
|
|
}
|
|
return devs ? DITEM_LEAVE_MENU : DITEM_FAILURE;
|
|
}
|
|
|
|
/* Get a network device */
|
|
Device *
|
|
tcpDeviceSelect(void)
|
|
{
|
|
DMenu *menu;
|
|
Device **devs, *rval;
|
|
int cnt;
|
|
|
|
devs = deviceFind(NULL, DEVICE_TYPE_NETWORK);
|
|
cnt = deviceCount(devs);
|
|
rval = NULL;
|
|
|
|
if (!cnt) {
|
|
msgConfirm("No network devices available!");
|
|
return NULL;
|
|
}
|
|
else if (!RunningAsInit) {
|
|
if (!msgYesNo("Running multi-user, assume that the network is already configured?"))
|
|
return devs[0];
|
|
}
|
|
if (cnt == 1) {
|
|
if (DITEM_STATUS(tcpOpenDialog(devs[0]) == DITEM_SUCCESS))
|
|
rval = devs[0];
|
|
}
|
|
else if (variable_get(VAR_NONINTERACTIVE) && variable_get(VAR_NETWORK_DEVICE)) {
|
|
devs = deviceFind(variable_get(VAR_NETWORK_DEVICE), DEVICE_TYPE_NETWORK);
|
|
cnt = deviceCount(devs);
|
|
if (cnt) {
|
|
if (DITEM_STATUS(tcpOpenDialog(devs[0]) == DITEM_SUCCESS))
|
|
rval = devs[0];
|
|
}
|
|
}
|
|
else {
|
|
int status;
|
|
|
|
menu = deviceCreateMenu(&MenuNetworkDevice, DEVICE_TYPE_NETWORK, netHook, NULL);
|
|
if (!menu)
|
|
msgFatal("Unable to create network device menu! Argh!");
|
|
status = dmenuOpenSimple(menu, FALSE);
|
|
free(menu);
|
|
if (status)
|
|
rval = NetDev;
|
|
}
|
|
return rval;
|
|
}
|
|
|
|
/* Do it from a menu that doesn't care about status */
|
|
int
|
|
tcpMenuSelect(dialogMenuItem *self)
|
|
{
|
|
Device *tmp;
|
|
|
|
tmp = tcpDeviceSelect();
|
|
if (tmp && !((DevInfo *)tmp->private)->use_dhcp && !msgYesNo("Would you like to bring the %s interface up right now?", tmp->name))
|
|
if (!tmp->init(tmp))
|
|
msgConfirm("Initialization of %s device failed.", tmp->name);
|
|
return DITEM_SUCCESS | DITEM_RESTORE;
|
|
}
|