2 * $FreeBSD: src/release/sysinstall/tcpip.c,v 1.103.2.22 2003/03/22 23:03:22 mbr Exp $
5 * Gary J Palmer. All rights reserved.
7 * Jordan K. Hubbard. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
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
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.
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.
34 * All kinds of hacking also performed by jkh on this code. Don't
35 * blame Gary for every bogosity you see here.. :-)
40 #include "sysinstall.h"
41 #include <sys/param.h>
42 #include <sys/sysctl.h>
43 #include <sys/socket.h>
44 #include <netinet/in.h>
47 /* The help file for the TCP/IP setup screen */
48 #define TCP_HELPFILE "tcp"
50 /* These are nasty, but they make the layout structure a lot easier ... */
52 static char hostname[HOSTNAME_FIELD_LEN], domainname[HOSTNAME_FIELD_LEN],
53 gateway[IPADDR_FIELD_LEN], nameserver[INET6_ADDRSTRLEN];
54 static int okbutton, cancelbutton;
55 static char ipaddr[IPADDR_FIELD_LEN], netmask[IPADDR_FIELD_LEN], extras[EXTRAS_FIELD_LEN];
56 static char ipv6addr[INET6_ADDRSTRLEN];
58 /* What the screen size is meant to be */
59 #define TCP_DIALOG_Y 0
60 #define TCP_DIALOG_X 8
61 #define TCP_DIALOG_WIDTH COLS - 16
62 #define TCP_DIALOG_HEIGHT LINES - 2
64 static Layout layout[] = {
65 #define LAYOUT_HOSTNAME 0
66 { 1, 2, 25, HOSTNAME_FIELD_LEN - 1,
67 "Host:", "Your fully-qualified hostname, e.g. foo.bar.com",
68 hostname, STRINGOBJ, NULL },
69 #define LAYOUT_DOMAINNAME 1
70 { 1, 35, 20, HOSTNAME_FIELD_LEN - 1,
72 "The name of the domain that your machine is in, e.g. bar.com",
73 domainname, STRINGOBJ, NULL },
74 #define LAYOUT_GATEWAY 2
75 { 5, 2, 18, IPADDR_FIELD_LEN - 1,
77 "IPv4 address of host forwarding packets to non-local destinations",
78 gateway, STRINGOBJ, NULL },
79 #define LAYOUT_NAMESERVER 3
80 { 5, 35, 18, INET6_ADDRSTRLEN - 1,
81 "Name server:", "IPv4 or IPv6 address of your local DNS server",
82 nameserver, STRINGOBJ, NULL },
83 #define LAYOUT_IPADDR 4
84 { 10, 10, 18, IPADDR_FIELD_LEN - 1,
86 "The IPv4 address to be used for this interface",
87 ipaddr, STRINGOBJ, NULL },
88 #define LAYOUT_NETMASK 5
89 { 10, 35, 18, IPADDR_FIELD_LEN - 1,
91 "The netmask for this interface, e.g. 0xffffff00 for a class C network",
92 netmask, STRINGOBJ, NULL },
93 #define LAYOUT_EXTRAS 6
94 { 14, 10, 37, HOSTNAME_FIELD_LEN - 1,
95 "Extra options to ifconfig:",
96 "Any interface-specific options to ifconfig you would like to add",
97 extras, STRINGOBJ, NULL },
98 #define LAYOUT_OKBUTTON 7
100 "OK", "Select this if you are happy with these settings",
101 &okbutton, BUTTONOBJ, NULL },
102 #define LAYOUT_CANCELBUTTON 8
104 "CANCEL", "Select this if you wish to cancel this screen",
105 &cancelbutton, BUTTONOBJ, NULL },
109 #define _validByte(b) ((b) >= 0 && (b) <= 255)
116 msgConfirm("%s", msg);
119 /* Verify IP address integrity */
121 verifyIP(char *ip, unsigned long *mask, unsigned long *out)
126 unsigned long parsedip;
127 unsigned long max_addr = (255 << 24) | (255 << 16) | (255 << 8) | 255;
131 a = strtol(ip, &endptr, 10);
132 if (*endptr++ != '.')
134 b = strtol(endptr, &endptr, 10);
135 if (*endptr++ != '.')
137 c = strtol(endptr, &endptr, 10);
138 if (*endptr++ != '.')
140 d = strtol(endptr, &endptr, 10);
143 if (!_validByte(a) || !_validByte(b) || !_validByte(c) || !_validByte(d))
145 parsedip = (a << 24) | (b << 16) | (c << 8) | d;
149 * The ip address must not be network or broadcast address.
151 if (mask && ((parsedip == (parsedip & *mask)) ||
152 (parsedip == ((parsedip & *mask) + max_addr - *mask))))
160 struct addrinfo hints, *res;
162 memset(&hints, 0, sizeof(hints));
163 hints.ai_family = AF_INET6;
164 hints.ai_socktype = SOCK_STREAM;
165 hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST;
166 if (getaddrinfo(ip, NULL, &hints, &res) == 0) {
173 /* Verify IPv4 netmask as being well-formed as
174 a 0x or AAA.BBB.CCC.DDD mask */
176 verifyNetmask(const char *netmask, unsigned long *out)
182 if (netmask[0] == '0' && (netmask[1] == 'x' || netmask[1] == 'X')) {
183 /* Parse out hex mask */
184 mask = strtoul(netmask, &endptr, 0);
188 /* Parse out quad decimal mask */
189 mask = strtoul(netmask, &endptr, 10);
190 if (!_validByte(mask) || *endptr++ != '.')
192 tmp = strtoul(endptr, &endptr, 10);
193 if (!_validByte(tmp) || *endptr++ != '.')
195 mask = (mask << 8) + tmp;
196 tmp = strtoul(endptr, &endptr, 10);
197 if (!_validByte(tmp) || *endptr++ != '.')
199 mask = (mask << 8) + tmp;
200 tmp = strtoul(endptr, &endptr, 10);
201 if (!_validByte(tmp) || *endptr++ != '\0')
203 mask = (mask << 8) + tmp;
205 /* Verify that we have a continous netmask */
206 if ((((-mask & mask) - 1) | mask) != 0xffffffff)
214 verifyGW(char *gw, unsigned long *ip, unsigned long *mask)
216 unsigned long parsedgw;
218 if (!verifyIP(gw, mask, &parsedgw))
220 /* Gateway needs to be within the set of IPs reachable through the
222 if (ip && mask && ((parsedgw & *mask) != (*ip & *mask)))
227 /* Check for the settings on the screen - the per-interface stuff is
228 moved to the main handling code now to do it on the fly - sigh */
232 unsigned long parsedip;
233 unsigned long parsednetmask;
236 feepout("Must specify a host name of some sort!");
237 else if (netmask[0] && !verifyNetmask(netmask, &parsednetmask))
238 feepout("Invalid netmask value");
239 else if (nameserver[0] && !verifyIP(nameserver, NULL, NULL) &&
240 !verifyIP6(nameserver))
241 feepout("Invalid name server IP address specified");
242 else if (ipaddr[0] && !verifyIP(ipaddr, &parsednetmask, &parsedip))
243 feepout("Invalid IPv4 address");
244 else if (gateway[0] && strcmp(gateway, "NO") &&
245 !verifyGW(gateway, ipaddr[0] ? &parsedip : NULL,
246 netmask[0] ? &parsednetmask : NULL))
247 feepout("Invalid gateway IPv4 address specified");
254 dhcpGetInfo(Device *devp)
256 /* If it fails, do it the old-fashioned way */
257 if (dhcpParseLeases("/var/db/dhclient.leases", hostname, domainname,
258 nameserver, ipaddr, gateway, netmask) == -1) {
260 char *cp, cmd[256], data[2048];
263 /* Bah, now we have to kludge getting the information from ifconfig */
264 snprintf(cmd, sizeof cmd, "ifconfig %s", devp->name);
265 ifp = popen(cmd, "r");
267 j = fread(data, 1, sizeof(data), ifp);
269 if (j < 0) /* paranoia */
273 msgDebug("DHCP configured interface returns %s\n", data);
274 /* XXX This is gross as it assumes a certain ordering to
275 ifconfig's output! XXX */
276 if ((cp = strstr(data, "inet ")) != NULL) {
278 cp += 5; /* move over keyword */
280 ipaddr[i++] = *(cp++);
282 if (!strncmp(++cp, "netmask", 7)) {
286 netmask[i++] = *(cp++);
293 /* If we didn't get a name server value, hunt for it in resolv.conf */
294 if (!nameserver[0] && file_readable("/etc/resolv.conf"))
295 configEnvironmentResolv("/etc/resolv.conf");
297 variable_set2(VAR_HOSTNAME, hostname, 0);
301 rtsolGetInfo(Device *devp)
304 char *cp, cmd[256], data[2048];
307 snprintf(cmd, sizeof cmd, "ifconfig %s", devp->name);
308 if ((ifp = popen(cmd, "r")) == NULL)
310 while (fgets(data, sizeof(data), ifp) != NULL) {
312 msgDebug("RTSOL configured interface returns %s", data);
313 if ((cp = strstr(data, "inet6 ")) != NULL) {
314 cp += 6; /* move over keyword */
315 if (strncmp(cp, "fe80:", 5)) {
318 ipv6addr[i++] = *(cp++);
326 /* This is it - how to get TCP setup values */
328 tcpOpenDialog(Device *devp)
330 WINDOW *ds_win, *save = NULL;
331 ComposeObj *obj = NULL;
332 int n = 0, filled = 0, cancel = FALSE;
333 int max, ret = DITEM_SUCCESS;
334 int use_dhcp = FALSE;
335 int use_rtsol = FALSE;
340 /* Initialise vars from previous device values */
342 DevInfo *di = (DevInfo *)devp->private;
344 SAFE_STRCPY(ipaddr, di->ipaddr);
345 SAFE_STRCPY(netmask, di->netmask);
346 SAFE_STRCPY(extras, di->extras);
347 use_dhcp = di->use_dhcp;
348 use_rtsol = di->use_rtsol;
350 else { /* See if there are any defaults */
352 char *old_interactive = NULL;
355 * This is a hack so that the dialogs below are interactive in a
356 * script if we have requested interactive behavior.
358 if (variable_get(VAR_NONINTERACTIVE) &&
359 variable_get(VAR_NETINTERACTIVE)) {
360 old_interactive = strdup(VAR_NONINTERACTIVE);
361 variable_unset(VAR_NONINTERACTIVE);
366 * Try a RTSOL scan if such behavior is desired.
367 * If the variable was configured and is YES, do it.
368 * If it was configured to anything else, treat it as NO.
369 * Otherwise, ask the question interactively.
371 if (!variable_cmp(VAR_TRY_RTSOL, "YES") ||
372 (variable_get(VAR_TRY_RTSOL)==0 && !msgNoYes("Do you want to try IPv6 configuration of the interface?"))) {
377 sysctlbyname("net.inet6.ip6.forwarding", NULL, 0, &i, sizeof(i));
379 sysctlbyname("net.inet6.ip6.accept_rtadv", NULL, 0, &i, sizeof(i));
380 vsystem("ifconfig %s up", devp->name);
382 sysctlbyname("net.inet6.ip6.dad_count", &i, &len, NULL, 0);
385 msgNotify("Scanning for RA servers...");
386 if (0 == vsystem("rtsol %s", devp->name)) {
388 sysctlbyname("net.inet6.ip6.dad_count", &i, &len, NULL, 0);
398 * First try a DHCP scan if such behavior is desired.
399 * If the variable was configured and is YES, do it.
400 * If it was configured to anything else, treat it as NO.
401 * Otherwise, ask the question interactively.
403 if (!variable_cmp(VAR_TRY_DHCP, "YES") ||
404 (variable_get(VAR_TRY_DHCP)==0 && !msgNoYes("Do you want to try DHCP configuration of the interface?"))) {
408 vsystem("dhclient -r %s", devp->name);
409 msgNotify("Scanning for DHCP servers...");
410 if (0 == vsystem("dhclient -1 %s", devp->name)) {
418 /* Restore old VAR_NONINTERACTIVE if needed. */
419 if (old_interactive != NULL) {
420 variable_set2(VAR_NONINTERACTIVE, old_interactive, 0);
421 free(old_interactive);
424 /* Special hack so it doesn't show up oddly in the tcpip setup menu */
425 if (!strcmp(gateway, "NO"))
428 /* Get old IP address from variable space, if available */
430 if ((cp = variable_get(VAR_IPADDR)) != NULL)
431 SAFE_STRCPY(ipaddr, cp);
432 else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_IPADDR))) != NULL)
433 SAFE_STRCPY(ipaddr, cp);
436 /* Get old netmask from variable space, if available */
438 if ((cp = variable_get(VAR_NETMASK)) != NULL)
439 SAFE_STRCPY(netmask, cp);
440 else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_NETMASK))) != NULL)
441 SAFE_STRCPY(netmask, cp);
444 /* Get old extras string from variable space, if available */
446 if ((cp = variable_get(VAR_EXTRAS)) != NULL)
447 SAFE_STRCPY(extras, cp);
448 else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_EXTRAS))) != NULL)
449 SAFE_STRCPY(extras, cp);
453 /* Look up values already recorded with the system, or blank the string variables ready to accept some new data */
455 tmp = variable_get(VAR_HOSTNAME);
457 SAFE_STRCPY(hostname, tmp);
459 if (!domainname[0]) {
460 tmp = variable_get(VAR_DOMAINNAME);
462 SAFE_STRCPY(domainname, tmp);
465 tmp = variable_get(VAR_GATEWAY);
466 if (tmp && strcmp(tmp, "NO"))
467 SAFE_STRCPY(gateway, tmp);
469 if (!nameserver[0]) {
470 tmp = variable_get(VAR_NAMESERVER);
472 SAFE_STRCPY(nameserver, tmp);
475 /* If non-interactive, jump straight over the dialog crap and into config section */
476 if (variable_get(VAR_NONINTERACTIVE) &&
477 !variable_get(VAR_NETINTERACTIVE)) {
479 msgConfirm("WARNING: hostname variable not set and is a non-optional\n"
480 "parameter. Please add this to your installation script\n"
481 "or set the netInteractive variable (see sysinstall man page)");
486 /* Now do all the screen I/O */
487 dialog_clear_norefresh();
489 /* Modify the help line for PLIP config */
490 if (!strncmp(devp->name, "lp", 2))
491 layout[LAYOUT_EXTRAS].help =
492 "For PLIP configuration, you must enter the peer's IP address here.";
494 /* We need a curses window */
495 tmp = " Network Configuration ";
497 tmp = string_concat(tmp, "(IPv6 ready) ");
498 if (!(ds_win = openLayoutDialog(TCP_HELPFILE, tmp,
499 TCP_DIALOG_X, TCP_DIALOG_Y, TCP_DIALOG_WIDTH, TCP_DIALOG_HEIGHT))) {
501 msgConfirm("Cannot open TCP/IP dialog window!!");
503 return DITEM_FAILURE;
506 /* Draw interface configuration box */
507 draw_box(ds_win, TCP_DIALOG_Y + 9, TCP_DIALOG_X + 8, TCP_DIALOG_HEIGHT - 13, TCP_DIALOG_WIDTH - 17,
508 dialog_attr, border_attr);
509 wattrset(ds_win, dialog_attr);
510 sprintf(title, " Configuration for Interface %s ", devp->name);
511 mvwaddstr(ds_win, TCP_DIALOG_Y + 9, TCP_DIALOG_X + 14, title);
513 /* Some more initialisation before we go into the main input loop */
514 obj = initLayoutDialog(ds_win, layout, TCP_DIALOG_X, TCP_DIALOG_Y, &max);
517 cancelbutton = okbutton = 0;
518 while (layoutDialogLoop(ds_win, layout, &obj, &n, max, &cancelbutton, &cancel)) {
519 /* Prevent this from being irritating if user really means NO */
521 /* Insert a default value for the netmask, 0xffffff00 is
522 * the most appropriate one (entire class C, or subnetted
523 * class A/B network).
526 strcpy(netmask, "255.255.255.0");
527 RefreshStringObj(layout[LAYOUT_NETMASK].obj);
530 if (!index(hostname, '.') && domainname[0]) {
531 strcat(hostname, ".");
532 strcat(hostname, domainname);
533 RefreshStringObj(layout[LAYOUT_HOSTNAME].obj);
536 else if (((tmp = index(hostname, '.')) != NULL) && !domainname[0]) {
537 SAFE_STRCPY(domainname, tmp + 1);
538 RefreshStringObj(layout[LAYOUT_DOMAINNAME].obj);
543 if (!cancel && !verifySettings())
546 /* Clear this crap off the screen */
548 dialog_clear_norefresh();
551 /* We actually need to inform the rest of sysinstall about this
552 data now if the user hasn't selected cancel. Save the stuff
553 out to the environment via the variable_set() mechanism */
558 char temp[512], ifn[255];
560 int ipv4_enable = FALSE;
563 variable_set2(VAR_HOSTNAME, hostname, 1);
564 sethostname(hostname, strlen(hostname));
567 variable_set2(VAR_DOMAINNAME, domainname, 0);
569 variable_set2(VAR_GATEWAY, gateway, use_dhcp ? 0 : 1);
571 variable_set2(VAR_NAMESERVER, nameserver, 0);
573 variable_set2(VAR_IPADDR, ipaddr, 0);
575 variable_set2(VAR_IPV6ADDR, ipv6addr, 0);
578 devp->private = (DevInfo *)safe_malloc(sizeof(DevInfo));
580 SAFE_STRCPY(di->ipaddr, ipaddr);
581 SAFE_STRCPY(di->netmask, netmask);
582 SAFE_STRCPY(di->extras, extras);
583 di->use_dhcp = use_dhcp;
584 di->use_rtsol = use_rtsol;
586 if (use_dhcp || ipaddr[0])
589 sprintf(ifn, "%s%s", VAR_IFCONFIG, devp->name);
591 sprintf(temp, "DHCP");
593 sprintf(temp, "inet %s %s netmask %s",
594 ipaddr, extras, netmask);
595 variable_set2(ifn, temp, 1);
598 pccard = variable_get("_pccard_install");
599 if (pccard && strcmp(pccard, "YES") == 0 && ipv4_enable) {
600 variable_set2("pccard_ifconfig", temp, 1);
604 variable_set2(VAR_IPV6_ENABLE, "YES", 1);
606 configResolv(NULL); /* XXX this will do it on the MFS copy XXX */
615 static Device *NetDev;
618 netHook(dialogMenuItem *self)
622 devs = deviceFindDescr(self->prompt, self->title, DEVICE_TYPE_NETWORK);
624 if (DITEM_STATUS(tcpOpenDialog(devs[0])) != DITEM_FAILURE)
629 return devs ? DITEM_LEAVE_MENU : DITEM_FAILURE;
632 /* Get a network device */
634 tcpDeviceSelect(void)
637 Device **devs, *rval;
640 devs = deviceFind(variable_get(VAR_NETWORK_DEVICE), DEVICE_TYPE_NETWORK);
641 cnt = deviceCount(devs);
645 msgConfirm("No network devices available!");
648 else if ((!RunningAsInit) && (variable_check("NETWORK_CONFIGURED=NO") != TRUE)) {
649 if (!msgYesNo("Running multi-user, assume that the network is already configured?"))
653 if (DITEM_STATUS(tcpOpenDialog(devs[0]) == DITEM_SUCCESS))
656 else if (variable_get(VAR_NONINTERACTIVE) && variable_get(VAR_NETWORK_DEVICE)) {
657 devs = deviceFind(variable_get(VAR_NETWORK_DEVICE), DEVICE_TYPE_NETWORK);
658 cnt = deviceCount(devs);
660 if (DITEM_STATUS(tcpOpenDialog(devs[0]) == DITEM_SUCCESS))
667 menu = deviceCreateMenu(&MenuNetworkDevice, DEVICE_TYPE_NETWORK, netHook, NULL);
669 msgFatal("Unable to create network device menu! Argh!");
670 status = dmenuOpenSimple(menu, FALSE);
678 /* Do it from a menu that doesn't care about status */
680 tcpMenuSelect(dialogMenuItem *self)
685 variable_set("NETWORK_CONFIGURED=NO",0);
686 tmp = tcpDeviceSelect();
687 variable_unset("NETWORK_CONFIGURED");
689 if (tmp && tmp->private && !((DevInfo *)tmp->private)->use_dhcp && !msgYesNo("Would you like to bring the %s interface up right now?", tmp->name))
690 if (!DEVICE_INIT(tmp))
691 msgConfirm("Initialization of %s device failed.", tmp->name);
693 return DITEM_SUCCESS;