/* * $FreeBSD: src/release/sysinstall/tcpip.c,v 1.103.2.22 2003/03/22 23:03:22 mbr Exp $ * $DragonFly: src/release/sysinstall/Attic/tcpip.c,v 1.2 2003/06/17 04:27:21 dillon 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 #include #include #include #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[INET6_ADDRSTRLEN]; static int okbutton, cancelbutton; static char ipaddr[IPADDR_FIELD_LEN], netmask[IPADDR_FIELD_LEN], extras[EXTRAS_FIELD_LEN]; static char ipv6addr[INET6_ADDRSTRLEN]; /* 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, "IPv4 Gateway:", "IPv4 address of host forwarding packets to non-local destinations", gateway, STRINGOBJ, NULL }, #define LAYOUT_NAMESERVER 3 { 5, 35, 18, INET6_ADDRSTRLEN - 1, "Name server:", "IPv4 or IPv6 address of your local DNS server", nameserver, STRINGOBJ, NULL }, #define LAYOUT_IPADDR 4 { 10, 10, 18, IPADDR_FIELD_LEN - 1, "IPv4 Address:", "The IPv4 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("%s", msg); } /* Verify IP address integrity */ static int verifyIP(char *ip, unsigned long *mask, unsigned long *out) { long a, b, c, d; char *endptr; unsigned long parsedip; unsigned long max_addr = (255 << 24) | (255 << 16) | (255 << 8) | 255; if (ip == NULL) return 0; a = strtol(ip, &endptr, 10); if (*endptr++ != '.') return 0; b = strtol(endptr, &endptr, 10); if (*endptr++ != '.') return 0; c = strtol(endptr, &endptr, 10); if (*endptr++ != '.') return 0; d = strtol(endptr, &endptr, 10); if (*endptr != '\0') return 0; if (!_validByte(a) || !_validByte(b) || !_validByte(c) || !_validByte(d)) return 0; parsedip = (a << 24) | (b << 16) | (c << 8) | d; if (out) *out = parsedip; /* * The ip address must not be network or broadcast address. */ if (mask && ((parsedip == (parsedip & *mask)) || (parsedip == ((parsedip & *mask) + max_addr - *mask)))) return 0; return 1; } static int verifyIP6(char *ip) { struct addrinfo hints, *res; memset(&hints, 0, sizeof(hints)); hints.ai_family = AF_INET6; hints.ai_socktype = SOCK_STREAM; hints.ai_flags = AI_PASSIVE | AI_NUMERICHOST; if (getaddrinfo(ip, NULL, &hints, &res) == 0) { freeaddrinfo(res); return 1; } return 0; } /* Verify IPv4 netmask as being well-formed as a 0x or AAA.BBB.CCC.DDD mask */ static int verifyNetmask(const char *netmask, unsigned long *out) { unsigned long mask; unsigned long tmp; char *endptr; if (netmask[0] == '0' && (netmask[1] == 'x' || netmask[1] == 'X')) { /* Parse out hex mask */ mask = strtoul(netmask, &endptr, 0); if (*endptr != '\0') return 0; } else { /* Parse out quad decimal mask */ mask = strtoul(netmask, &endptr, 10); if (!_validByte(mask) || *endptr++ != '.') return 0; tmp = strtoul(endptr, &endptr, 10); if (!_validByte(tmp) || *endptr++ != '.') return 0; mask = (mask << 8) + tmp; tmp = strtoul(endptr, &endptr, 10); if (!_validByte(tmp) || *endptr++ != '.') return 0; mask = (mask << 8) + tmp; tmp = strtoul(endptr, &endptr, 10); if (!_validByte(tmp) || *endptr++ != '\0') return 0; mask = (mask << 8) + tmp; } /* Verify that we have a continous netmask */ if ((((-mask & mask) - 1) | mask) != 0xffffffff) return 0; if (out) *out = mask; return 1; } static int verifyGW(char *gw, unsigned long *ip, unsigned long *mask) { unsigned long parsedgw; if (!verifyIP(gw, mask, &parsedgw)) return 0; /* Gateway needs to be within the set of IPs reachable through the interface */ if (ip && mask && ((parsedgw & *mask) != (*ip & *mask))) return 0; return 1; } /* 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) { unsigned long parsedip; unsigned long parsednetmask; if (!hostname[0]) feepout("Must specify a host name of some sort!"); else if (netmask[0] && !verifyNetmask(netmask, &parsednetmask)) feepout("Invalid netmask value"); else if (nameserver[0] && !verifyIP(nameserver, NULL, NULL) && !verifyIP6(nameserver)) feepout("Invalid name server IP address specified"); else if (ipaddr[0] && !verifyIP(ipaddr, &parsednetmask, &parsedip)) feepout("Invalid IPv4 address"); else if (gateway[0] && strcmp(gateway, "NO") && !verifyGW(gateway, ipaddr[0] ? &parsedip : NULL, netmask[0] ? &parsednetmask : NULL)) feepout("Invalid gateway IPv4 address specified"); 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); } static void rtsolGetInfo(Device *devp) { FILE *ifp; char *cp, cmd[256], data[2048]; int i; snprintf(cmd, sizeof cmd, "ifconfig %s", devp->name); if ((ifp = popen(cmd, "r")) == NULL) return; while (fgets(data, sizeof(data), ifp) != NULL) { if (isDebug()) msgDebug("RTSOL configured interface returns %s", data); if ((cp = strstr(data, "inet6 ")) != NULL) { cp += 6; /* move over keyword */ if (strncmp(cp, "fe80:", 5)) { i = 0; while (*cp != ' ') ipv6addr[i++] = *(cp++); ipv6addr[i] = '\0'; } } } fclose(ifp); } /* 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; int use_rtsol = FALSE; char *tmp; char title[80]; save = savescr(); /* 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; use_rtsol = di->use_rtsol; } else { /* See if there are any defaults */ char *cp; char *old_interactive = NULL; /* * This is a hack so that the dialogs below are interactive in a * script if we have requested interactive behavior. */ if (variable_get(VAR_NONINTERACTIVE) && variable_get(VAR_NETINTERACTIVE)) { old_interactive = strdup(VAR_NONINTERACTIVE); variable_unset(VAR_NONINTERACTIVE); } /* * Try a RTSOL scan if such behavior is desired. * If the variable was configured and is YES, do it. * If it was configured to anything else, treat it as NO. * Otherwise, ask the question interactively. */ if (!variable_cmp(VAR_TRY_RTSOL, "YES") || (variable_get(VAR_TRY_RTSOL)==0 && !msgNoYes("Do you want to try IPv6 configuration of the interface?"))) { int i; size_t len; i = 0; sysctlbyname("net.inet6.ip6.forwarding", NULL, 0, &i, sizeof(i)); i = 1; sysctlbyname("net.inet6.ip6.accept_rtadv", NULL, 0, &i, sizeof(i)); vsystem("ifconfig %s up", devp->name); len = sizeof(i); sysctlbyname("net.inet6.ip6.dad_count", &i, &len, NULL, 0); sleep(i + 1); Mkdir("/var/run"); msgNotify("Scanning for RA servers..."); if (0 == vsystem("rtsol %s", devp->name)) { len = sizeof(i); sysctlbyname("net.inet6.ip6.dad_count", &i, &len, NULL, 0); sleep(i + 1); rtsolGetInfo(devp); use_rtsol = TRUE; } else use_rtsol = FALSE; } /* * First try a DHCP scan if such behavior is desired. * If the variable was configured and is YES, do it. * If it was configured to anything else, treat it as NO. * Otherwise, ask the question interactively. */ if (!variable_cmp(VAR_TRY_DHCP, "YES") || (variable_get(VAR_TRY_DHCP)==0 && !msgNoYes("Do you want to try DHCP configuration of the interface?"))) { Mkdir("/var/db"); Mkdir("/var/run"); Mkdir("/tmp"); vsystem("dhclient -r %s", devp->name); msgNotify("Scanning for DHCP servers..."); if (0 == vsystem("dhclient -1 %s", devp->name)) { dhcpGetInfo(devp); use_dhcp = TRUE; } else use_dhcp = FALSE; } /* Restore old VAR_NONINTERACTIVE if needed. */ if (old_interactive != NULL) { variable_set2(VAR_NONINTERACTIVE, old_interactive, 0); free(old_interactive); } /* Special hack so it doesn't show up oddly in the tcpip setup menu */ if (!strcmp(gateway, "NO")) gateway[0] = '\0'; /* 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 && strcmp(tmp, "NO")) SAFE_STRCPY(gateway, tmp); } if (!nameserver[0]) { tmp = variable_get(VAR_NAMESERVER); if (tmp) SAFE_STRCPY(nameserver, tmp); } /* 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(); /* Modify the help line for PLIP config */ if (!strncmp(devp->name, "lp", 2)) layout[LAYOUT_EXTRAS].help = "For PLIP configuration, you must enter the peer's IP address here."; /* We need a curses window */ tmp = " Network Configuration "; if (ipv6addr[0]) tmp = string_concat(tmp, "(IPv6 ready) "); if (!(ds_win = openLayoutDialog(TCP_HELPFILE, tmp, 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 *pccard; int ipv4_enable = FALSE; if (hostname[0]) { variable_set2(VAR_HOSTNAME, hostname, 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 (ipv6addr[0]) variable_set2(VAR_IPV6ADDR, ipv6addr, 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; di->use_rtsol = use_rtsol; if (use_dhcp || ipaddr[0]) ipv4_enable = TRUE; if (ipv4_enable) { 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); } #ifdef PCCARD_ARCH pccard = variable_get("_pccard_install"); if (pccard && strcmp(pccard, "YES") == 0 && ipv4_enable) { variable_set2("pccard_ifconfig", temp, 1); } #endif if (use_rtsol) variable_set2(VAR_IPV6_ENABLE, "YES", 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(variable_get(VAR_NETWORK_DEVICE), DEVICE_TYPE_NETWORK); cnt = deviceCount(devs); rval = NULL; if (!cnt) { msgConfirm("No network devices available!"); return NULL; } else if ((!RunningAsInit) && (variable_check("NETWORK_CONFIGURED=NO") != TRUE)) { 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; WINDOW *save; variable_set("NETWORK_CONFIGURED=NO",0); tmp = tcpDeviceSelect(); variable_unset("NETWORK_CONFIGURED"); save = savescr(); if (tmp && tmp->private && !((DevInfo *)tmp->private)->use_dhcp && !msgYesNo("Would you like to bring the %s interface up right now?", tmp->name)) if (!DEVICE_INIT(tmp)) msgConfirm("Initialization of %s device failed.", tmp->name); restorescr(save); return DITEM_SUCCESS; }