/* * $Id: tcpip.c,v 1.64 1997/02/22 14:12:23 peter 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 /* 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] && !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; } /* This is it - how to get TCP setup values */ int tcpOpenDialog(Device *devp) { WINDOW *ds_win, *save; ComposeObj *obj = NULL; int n = 0, cancel = FALSE; int max, ret; char *tmp; char title[80]; if (!RunningAsInit) { if (!msgYesNo("Running multi-user, assume that the network is already configured?")) return DITEM_SUCCESS; } save = savescr(); 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); /* 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); } else { /* See if there are any defaults */ char *cp; 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); } 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); } 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 */ tmp = variable_get(VAR_HOSTNAME); if (tmp) SAFE_STRCPY(hostname, tmp); else bzero(hostname, sizeof(hostname)); tmp = variable_get(VAR_DOMAINNAME); if (tmp) SAFE_STRCPY(domainname, tmp); else bzero(domainname, sizeof(domainname)); tmp = variable_get(VAR_GATEWAY); if (tmp) SAFE_STRCPY(gateway, tmp); else bzero(gateway, sizeof(gateway)); tmp = variable_get(VAR_NAMESERVER); if (tmp) SAFE_STRCPY(nameserver, tmp); else bzero(nameserver, sizeof(nameserver)); /* 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)) { /* 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); } if (!index(hostname, '.') && domainname[0]) { strcat(hostname, "."); strcat(hostname, domainname); RefreshStringObj(layout[LAYOUT_HOSTNAME].obj); } else if (((tmp = index(hostname, '.')) != NULL) && !domainname[0]) { SAFE_STRCPY(domainname, tmp + 1); RefreshStringObj(layout[LAYOUT_DOMAINNAME].obj); } } 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 */ 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; SAFE_STRCPY(di->ipaddr, ipaddr); SAFE_STRCPY(di->netmask, netmask); SAFE_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); configResolv(); /* 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); if (!cnt) { msgConfirm("No network devices available!"); rval = NULL; } else if (cnt == 1) { if (DITEM_STATUS(tcpOpenDialog(devs[0]) == DITEM_FAILURE)) return NULL; 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 = NULL; else 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 && !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; }