tcpip.c revision 26572
1/* 2 * $Id: tcpip.c,v 1.66 1997/06/09 01:19:44 jkh Exp $ 3 * 4 * Copyright (c) 1995 5 * Gary J Palmer. All rights reserved. 6 * Copyright (c) 1996 7 * Jordan K. Hubbard. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer, 14 * verbatim and that no modifications are made prior to this 15 * point in the file. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 25 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 26 * OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 27 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 28 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 * 31 */ 32 33/* 34 * All kinds of hacking also performed by jkh on this code. Don't 35 * blame Gary for every bogosity you see here.. :-) 36 * 37 * -jkh 38 */ 39 40#include "sysinstall.h" 41#include <sys/param.h> 42 43/* The help file for the TCP/IP setup screen */ 44#define TCP_HELPFILE "tcp" 45 46/* These are nasty, but they make the layout structure a lot easier ... */ 47 48static char hostname[HOSTNAME_FIELD_LEN], domainname[HOSTNAME_FIELD_LEN], 49 gateway[IPADDR_FIELD_LEN], nameserver[IPADDR_FIELD_LEN]; 50static int okbutton, cancelbutton; 51static char ipaddr[IPADDR_FIELD_LEN], netmask[IPADDR_FIELD_LEN], extras[EXTRAS_FIELD_LEN]; 52 53/* What the screen size is meant to be */ 54#define TCP_DIALOG_Y 0 55#define TCP_DIALOG_X 8 56#define TCP_DIALOG_WIDTH COLS - 16 57#define TCP_DIALOG_HEIGHT LINES - 2 58 59static Layout layout[] = { 60#define LAYOUT_HOSTNAME 0 61 { 1, 2, 25, HOSTNAME_FIELD_LEN - 1, 62 "Host:", "Your fully-qualified hostname, e.g. foo.bar.com", 63 hostname, STRINGOBJ, NULL }, 64#define LAYOUT_DOMAINNAME 1 65 { 1, 35, 20, HOSTNAME_FIELD_LEN - 1, 66 "Domain:", 67 "The name of the domain that your machine is in, e.g. bar.com", 68 domainname, STRINGOBJ, NULL }, 69#define LAYOUT_GATEWAY 2 70 { 5, 2, 18, IPADDR_FIELD_LEN - 1, 71 "Gateway:", 72 "IP address of host forwarding packets to non-local destinations", 73 gateway, STRINGOBJ, NULL }, 74#define LAYOUT_NAMESERVER 3 75 { 5, 35, 18, IPADDR_FIELD_LEN - 1, 76 "Name server:", "IP address of your local DNS server", 77 nameserver, STRINGOBJ, NULL }, 78#define LAYOUT_IPADDR 4 79 { 10, 10, 18, IPADDR_FIELD_LEN - 1, 80 "IP Address:", 81 "The IP address to be used for this interface", 82 ipaddr, STRINGOBJ, NULL }, 83#define LAYOUT_NETMASK 5 84 { 10, 35, 18, IPADDR_FIELD_LEN - 1, 85 "Netmask:", 86 "The netmask for this interface, e.g. 0xffffff00 for a class C network", 87 netmask, STRINGOBJ, NULL }, 88#define LAYOUT_EXTRAS 6 89 { 14, 10, 37, HOSTNAME_FIELD_LEN - 1, 90 "Extra options to ifconfig:", 91 "Any interface-specific options to ifconfig you would like to add", 92 extras, STRINGOBJ, NULL }, 93#define LAYOUT_OKBUTTON 7 94 { 19, 15, 0, 0, 95 "OK", "Select this if you are happy with these settings", 96 &okbutton, BUTTONOBJ, NULL }, 97#define LAYOUT_CANCELBUTTON 8 98 { 19, 35, 0, 0, 99 "CANCEL", "Select this if you wish to cancel this screen", 100 &cancelbutton, BUTTONOBJ, NULL }, 101 { NULL }, 102}; 103 104#define _validByte(b) ((b) >= 0 && (b) <= 255) 105 106/* whine */ 107static void 108feepout(char *msg) 109{ 110 beep(); 111 msgConfirm(msg); 112} 113 114/* Very basic IP address integrity check - could be drastically improved */ 115static int 116verifyIP(char *ip) 117{ 118 int a, b, c, d; 119 120 if (ip && sscanf(ip, "%d.%d.%d.%d", &a, &b, &c, &d) == 4 && 121 _validByte(a) && _validByte(b) && _validByte(c) && 122 _validByte(d) && (d != 255)) 123 return 1; 124 else 125 return 0; 126} 127 128/* Check for the settings on the screen - the per-interface stuff is 129 moved to the main handling code now to do it on the fly - sigh */ 130static int 131verifySettings(void) 132{ 133 if (!hostname[0]) 134 feepout("Must specify a host name of some sort!"); 135 else if (gateway[0] && !verifyIP(gateway)) 136 feepout("Invalid gateway IP address specified"); 137 else if (nameserver[0] && !verifyIP(nameserver)) 138 feepout("Invalid name server IP address specified"); 139 else if (netmask[0] && (netmask[0] < '0' && netmask[0] > '3')) 140 feepout("Invalid netmask value"); 141 else if (ipaddr[0] && !verifyIP(ipaddr)) 142 feepout("Invalid IP address"); 143 else 144 return 1; 145 return 0; 146} 147 148/* This is it - how to get TCP setup values */ 149int 150tcpOpenDialog(Device *devp) 151{ 152 WINDOW *ds_win, *save = NULL; 153 ComposeObj *obj = NULL; 154 int n = 0, cancel = FALSE; 155 int max, ret; 156 char *tmp; 157 char title[80]; 158 159 if (!RunningAsInit) { 160 if (!msgYesNo("Running multi-user, assume that the network is already configured?")) 161 return DITEM_SUCCESS; 162 } 163 /* Initialise vars from previous device values */ 164 if (devp->private) { 165 DevInfo *di = (DevInfo *)devp->private; 166 167 SAFE_STRCPY(ipaddr, di->ipaddr); 168 SAFE_STRCPY(netmask, di->netmask); 169 SAFE_STRCPY(extras, di->extras); 170 } 171 else { /* See if there are any defaults */ 172 char *cp; 173 174 if (!ipaddr[0]) { 175 if ((cp = variable_get(VAR_IPADDR)) != NULL) 176 SAFE_STRCPY(ipaddr, cp); 177 else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_IPADDR))) != NULL) 178 SAFE_STRCPY(ipaddr, cp); 179 } 180 if (!netmask[0]) { 181 if ((cp = variable_get(VAR_NETMASK)) != NULL) 182 SAFE_STRCPY(netmask, cp); 183 else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_NETMASK))) != NULL) 184 SAFE_STRCPY(netmask, cp); 185 } 186 if (!extras[0]) { 187 if ((cp = variable_get(VAR_EXTRAS)) != NULL) 188 SAFE_STRCPY(extras, cp); 189 else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_EXTRAS))) != NULL) 190 SAFE_STRCPY(extras, cp); 191 } 192 } 193 194 /* Look up values already recorded with the system, or blank the string variables ready to accept some new data */ 195 tmp = variable_get(VAR_HOSTNAME); 196 if (tmp) 197 SAFE_STRCPY(hostname, tmp); 198 else 199 bzero(hostname, sizeof(hostname)); 200 tmp = variable_get(VAR_DOMAINNAME); 201 if (tmp) 202 SAFE_STRCPY(domainname, tmp); 203 else 204 bzero(domainname, sizeof(domainname)); 205 tmp = variable_get(VAR_GATEWAY); 206 if (tmp) 207 SAFE_STRCPY(gateway, tmp); 208 else 209 bzero(gateway, sizeof(gateway)); 210 tmp = variable_get(VAR_NAMESERVER); 211 if (tmp) 212 SAFE_STRCPY(nameserver, tmp); 213 else 214 bzero(nameserver, sizeof(nameserver)); 215 216 save = savescr(); 217 /* If non-interactive, jump straight over the dialog crap and into config section */ 218 if (variable_get(VAR_NONINTERACTIVE)) 219 goto netconfig; 220 221 /* Now do all the screen I/O */ 222 dialog_clear_norefresh(); 223 224 /* We need a curses window */ 225 if (!(ds_win = openLayoutDialog(TCP_HELPFILE, " Network Configuration ", 226 TCP_DIALOG_X, TCP_DIALOG_Y, TCP_DIALOG_WIDTH, TCP_DIALOG_HEIGHT))) { 227 beep(); 228 msgConfirm("Cannot open TCP/IP dialog window!!"); 229 restorescr(save); 230 return DITEM_FAILURE; 231 } 232 233 /* Draw interface configuration box */ 234 draw_box(ds_win, TCP_DIALOG_Y + 9, TCP_DIALOG_X + 8, TCP_DIALOG_HEIGHT - 13, TCP_DIALOG_WIDTH - 17, 235 dialog_attr, border_attr); 236 wattrset(ds_win, dialog_attr); 237 sprintf(title, " Configuration for Interface %s ", devp->name); 238 mvwaddstr(ds_win, TCP_DIALOG_Y + 9, TCP_DIALOG_X + 14, title); 239 240 /* Some more initialisation before we go into the main input loop */ 241 obj = initLayoutDialog(ds_win, layout, TCP_DIALOG_X, TCP_DIALOG_Y, &max); 242 243reenter: 244 cancelbutton = okbutton = 0; 245 while (layoutDialogLoop(ds_win, layout, &obj, &n, max, &cancelbutton, &cancel)) { 246 /* Insert a default value for the netmask, 0xffffff00 is 247 the most appropriate one (entire class C, or subnetted 248 class A/B network). */ 249 if (netmask[0] == '\0') { 250 strcpy(netmask, "255.255.255.0"); 251 RefreshStringObj(layout[LAYOUT_NETMASK].obj); 252 } 253 if (!index(hostname, '.') && domainname[0]) { 254 strcat(hostname, "."); 255 strcat(hostname, domainname); 256 RefreshStringObj(layout[LAYOUT_HOSTNAME].obj); 257 } 258 else if (((tmp = index(hostname, '.')) != NULL) && !domainname[0]) { 259 SAFE_STRCPY(domainname, tmp + 1); 260 RefreshStringObj(layout[LAYOUT_DOMAINNAME].obj); 261 } 262 } 263 264 if (!cancel && !verifySettings()) 265 goto reenter; 266 267 /* Clear this crap off the screen */ 268 delwin(ds_win); 269 dialog_clear_norefresh(); 270 use_helpfile(NULL); 271 272 /* We actually need to inform the rest of sysinstall about this 273 data now if the user hasn't selected cancel. Save the stuff 274 out to the environment via the variable_set() mechanism */ 275 276netconfig: 277 if (!cancel) { 278 DevInfo *di; 279 char temp[512], ifn[255]; 280 char *ifaces; 281 282 variable_set2(VAR_HOSTNAME, hostname); 283 sethostname(hostname, strlen(hostname)); 284 if (domainname[0]) 285 variable_set2(VAR_DOMAINNAME, domainname); 286 if (gateway[0]) 287 variable_set2(VAR_GATEWAY, gateway); 288 if (nameserver[0]) 289 variable_set2(VAR_NAMESERVER, nameserver); 290 291 if (!devp->private) 292 devp->private = (DevInfo *)safe_malloc(sizeof(DevInfo)); 293 di = devp->private; 294 SAFE_STRCPY(di->ipaddr, ipaddr); 295 SAFE_STRCPY(di->netmask, netmask); 296 SAFE_STRCPY(di->extras, extras); 297 298 sprintf(temp, "inet %s %s netmask %s", ipaddr, extras, netmask); 299 sprintf(ifn, "%s%s", VAR_IFCONFIG, devp->name); 300 variable_set2(ifn, temp); 301 ifaces = variable_get(VAR_INTERFACES); 302 if (!ifaces) 303 variable_set2(VAR_INTERFACES, ifaces = "lo0"); 304 /* Only add it if it's not there already */ 305 if (!strstr(ifaces, devp->name)) { 306 sprintf(ifn, "%s %s", devp->name, ifaces); 307 variable_set2(VAR_INTERFACES, ifn); 308 } 309 if (ipaddr[0]) 310 variable_set2(VAR_IPADDR, ipaddr); 311 configResolv(); /* XXX this will do it on the MFS copy XXX */ 312 ret = DITEM_SUCCESS; 313 } 314 else 315 ret = DITEM_FAILURE; 316 restorescr(save); 317 return ret; 318} 319 320static Device *NetDev; 321 322static int 323netHook(dialogMenuItem *self) 324{ 325 Device **devs; 326 327 devs = deviceFindDescr(self->prompt, self->title, DEVICE_TYPE_NETWORK); 328 if (devs) { 329 if (DITEM_STATUS(tcpOpenDialog(devs[0])) != DITEM_FAILURE) 330 NetDev = devs[0]; 331 else 332 NetDev = NULL; 333 } 334 return devs ? DITEM_LEAVE_MENU : DITEM_FAILURE; 335} 336 337/* Get a network device */ 338Device * 339tcpDeviceSelect(void) 340{ 341 DMenu *menu; 342 Device **devs, *rval; 343 int cnt; 344 345 devs = deviceFind(NULL, DEVICE_TYPE_NETWORK); 346 cnt = deviceCount(devs); 347 rval = NULL; 348 349 if (!cnt) 350 msgConfirm("No network devices available!"); 351 else if (cnt == 1) { 352 if (DITEM_STATUS(tcpOpenDialog(devs[0]) == DITEM_SUCCESS)) 353 rval = devs[0]; 354 } 355 else if (variable_get(VAR_NONINTERACTIVE) && variable_get(VAR_NETWORK_DEVICE)) { 356 devs = deviceFind(variable_get(VAR_NETWORK_DEVICE), DEVICE_TYPE_NETWORK); 357 cnt = deviceCount(devs); 358 if (cnt) { 359 if (DITEM_STATUS(tcpOpenDialog(devs[0]) == DITEM_SUCCESS)) 360 rval = devs[0]; 361 } 362 } 363 else { 364 int status; 365 366 menu = deviceCreateMenu(&MenuNetworkDevice, DEVICE_TYPE_NETWORK, netHook, NULL); 367 if (!menu) 368 msgFatal("Unable to create network device menu! Argh!"); 369 status = dmenuOpenSimple(menu, FALSE); 370 free(menu); 371 if (status) 372 rval = NetDev; 373 } 374 return rval; 375} 376 377/* Do it from a menu that doesn't care about status */ 378int 379tcpMenuSelect(dialogMenuItem *self) 380{ 381 Device *tmp; 382 383 tmp = tcpDeviceSelect(); 384 if (tmp && !msgYesNo("Would you like to bring the %s interface up right now?", tmp->name)) 385 if (!tmp->init(tmp)) 386 msgConfirm("Initialization of %s device failed.", tmp->name); 387 return DITEM_SUCCESS | DITEM_RESTORE; 388} 389