/* * $Id: tcpip.c,v 1.41 1996/06/13 17:07:41 jkh Exp $ * * Copyright (c) 1995 * Gary J Palmer. 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 GARY J PALMER ``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 GARY J PALMER 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 #include #include #include #include #include #include "ui_objects.h" #include "dir.h" #include "dialog.priv.h" #include "colors.h" #include "sysinstall.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 /* The screen layout structure */ typedef struct _layout { int y; /* x & Y co-ordinates */ int x; int len; /* The size of the dialog on the screen */ int maxlen; /* How much the user can type in ... */ char *prompt; /* The string for the prompt */ char *help; /* The display for the help line */ void *var; /* The var to set when this changes */ int type; /* The type of the dialog to create */ void *obj; /* The obj pointer returned by libdialog */ } Layout; static Layout layout[] = { { 1, 2, 25, HOSTNAME_FIELD_LEN - 1, "Host name:", "Your fully-qualified hostname, e.g. foo.bar.com", hostname, STRINGOBJ, NULL }, #define LAYOUT_HOSTNAME 0 { 1, 35, 20, HOSTNAME_FIELD_LEN - 1, "Domain name:", "The name of the domain that your machine is in, e.g. bar.com", domainname, STRINGOBJ, NULL }, #define LAYOUT_DOMAINNAME 1 { 5, 2, 18, IPADDR_FIELD_LEN - 1, "Gateway:", "IP address of host forwarding packets to non-local destinations", gateway, STRINGOBJ, NULL }, #define LAYOUT_GATEWAY 2 { 5, 35, 18, IPADDR_FIELD_LEN - 1, "Name server:", "IP address of your local DNS server", nameserver, STRINGOBJ, NULL }, #define LAYOUT_NAMESERVER 3 { 10, 10, 18, IPADDR_FIELD_LEN - 1, "IP Address:", "The IP address to be used for this interface", ipaddr, STRINGOBJ, NULL }, #define LAYOUT_IPADDR 4 { 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_NETMASK 5 { 14, 10, 37, HOSTNAME_FIELD_LEN - 1, "Extra options to ifconfig:", "Any interface-specific options to ifconfig you would like to use", extras, STRINGOBJ, NULL }, #define LAYOUT_EXTRAS 6 { 19, 15, 0, 0, "OK", "Select this if you are happy with these settings", &okbutton, BUTTONOBJ, NULL }, #define LAYOUT_OKBUTTON 7 { 19, 35, 0, 0, "CANCEL", "Select this if you wish to cancel this screen", &cancelbutton, BUTTONOBJ, NULL }, #define LAYOUT_CANCELBUTTON 8 { NULL }, }; #define _validByte(b) ((b) >= 0 && (b) <= 255) /* whine */ static void feepout(char *msg) { beep(); dialog_notify(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; } int tcpInstallDevice(char *str) { Device **devs; Device *dp = NULL; /* Clip garbage off the ends */ string_prune(str); str = string_skipwhite(str); if (!*str) return DITEM_FAILURE; devs = deviceFind(str, DEVICE_TYPE_NETWORK); if (devs && (dp = devs[0])) { char temp[512], ifn[255]; if (!dp->private) { DevInfo *di; char *ipaddr, *netmask, *extras; di = dp->private = (DevInfo *)malloc(sizeof(DevInfo)); if ((ipaddr = variable_get(string_concat3(VAR_IPADDR, "_", dp->name))) == NULL) ipaddr = variable_get(VAR_IPADDR); if ((netmask = variable_get(string_concat3(VAR_NETMASK, "_", dp->name))) == NULL) netmask = variable_get(VAR_NETMASK); if ((extras = variable_get(string_concat3(VAR_EXTRAS, "_", dp->name))) == NULL) extras = variable_get(VAR_EXTRAS); string_copy(di->ipaddr, ipaddr); string_copy(di->netmask, netmask); string_copy(di->extras, extras); if (ipaddr) { char *ifaces; sprintf(temp, "inet %s %s netmask %s", ipaddr, extras ? extras : "", netmask); sprintf(ifn, "%s%s", VAR_IFCONFIG, dp->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, dp->name)) { sprintf(ifn, "%s %s", dp->name, ifaces); variable_set2(VAR_INTERFACES, ifn); } } } mediaDevice = dp; } return dp ? DITEM_SUCCESS : DITEM_FAILURE; } /* This is it - how to get TCP setup values */ int tcpOpenDialog(Device *devp) { WINDOW *ds_win, *save; ComposeObj *obj = NULL; ComposeObj *first, *last; int n=0, quit=FALSE, cancel=FALSE, ret; int max; char *tmp; char help[FILENAME_MAX]; char title[80]; save = savescr(); dialog_clear(); /* We need a curses window */ ds_win = newwin(LINES, COLS, 0, 0); if (ds_win == 0) msgFatal("Cannot open TCP/IP dialog window!!"); /* Say where our help comes from */ systemHelpFile(TCP_HELPFILE, help); use_helpfile(help); /* Setup a nice screen for us to splat stuff onto */ draw_box(ds_win, TCP_DIALOG_Y, TCP_DIALOG_X, TCP_DIALOG_HEIGHT, TCP_DIALOG_WIDTH, dialog_attr, border_attr); wattrset(ds_win, dialog_attr); mvwaddstr(ds_win, TCP_DIALOG_Y, TCP_DIALOG_X + 20, " Network Configuration "); 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; strcpy(ipaddr, di->ipaddr); strcpy(netmask, di->netmask); strcpy(extras, di->extras); } else { /* See if there are any defaults */ char *cp; if (!ipaddr[0]) { if ((cp = variable_get(VAR_IPADDR)) != NULL) strcpy(ipaddr, cp); else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_IPADDR))) != NULL) strcpy(ipaddr, cp); } if (!netmask[0]) { if ((cp = variable_get(VAR_NETMASK)) != NULL) strcpy(netmask, cp); else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_NETMASK))) != NULL) strcpy(netmask, cp); } if (!extras[0]) { if ((cp = variable_get(VAR_EXTRAS)) != NULL) strcpy(extras, cp); else if ((cp = variable_get(string_concat3(devp->name, "_", VAR_EXTRAS))) != NULL) 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) strcpy(hostname, tmp); else bzero(hostname, sizeof(hostname)); tmp = variable_get(VAR_DOMAINNAME); if (tmp) strcpy(domainname, tmp); else bzero(domainname, sizeof(domainname)); tmp = variable_get(VAR_GATEWAY); if (tmp) strcpy(gateway, tmp); else bzero(gateway, sizeof(gateway)); tmp = variable_get(VAR_NAMESERVER); if (tmp) strcpy(nameserver, tmp); else bzero(nameserver, sizeof(nameserver)); /* Loop over the layout list, create the objects, and add them onto the chain of objects that dialog uses for traversal*/ n = 0; #define lt layout[n] while (lt.help != NULL) { switch (lt.type) { case STRINGOBJ: lt.obj = NewStringObj(ds_win, lt.prompt, lt.var, lt.y + TCP_DIALOG_Y, lt.x + TCP_DIALOG_X, lt.len, lt.maxlen); break; case BUTTONOBJ: lt.obj = NewButtonObj(ds_win, lt.prompt, lt.var, lt.y + TCP_DIALOG_Y, lt.x + TCP_DIALOG_X); break; default: msgFatal("Don't support this object yet!"); } AddObj(&obj, lt.type, (void *) lt.obj); n++; } max = n - 1; /* Find the last object we can traverse to */ last = obj; while (last->next) last = last->next; /* Find the first object in the list */ first = obj; for (first = obj; first->prev; first = first->prev); /* Some more initialisation before we go into the main input loop */ n = 0; cancelbutton = okbutton = 0; /* Incoming user data - DUCK! */ while (!quit) { char help_line[80]; int i, len = strlen(lt.help); /* Display the help line at the bottom of the screen */ for (i = 0; i < 79; i++) help_line[i] = (i < len) ? lt.help[i] : ' '; help_line[i] = '\0'; use_helpline(help_line); display_helpline(ds_win, LINES - 1, COLS - 1); /* Ask for libdialog to do its stuff */ ret = PollObj(&obj); if (n == LAYOUT_HOSTNAME) { /* We are in the Hostname field - calculate the domainname */ if ((tmp = index(hostname, '.')) != NULL) { strncpy(domainname, tmp + 1, strlen(tmp + 1)); domainname[strlen(tmp+1)] = '\0'; RefreshStringObj(layout[LAYOUT_DOMAINNAME].obj); } } else if (n == LAYOUT_IPADDR) { /* 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); } } else if (n == LAYOUT_DOMAINNAME) { if (!index(hostname, '.') && domainname[0]) { strcat(hostname, "."); strcat(hostname, domainname); RefreshStringObj(layout[LAYOUT_HOSTNAME].obj); } } /* Handle special case stuff that libdialog misses. Sigh */ switch (ret) { /* Bail out */ case SEL_ESC: quit = TRUE, cancel=TRUE; break; /* This doesn't work for list dialogs. Oh well. Perhaps should special case the move from the OK button ``up'' to make it go to the interface list, but then it gets awkward for the user to go back and correct screw up's in the per-interface section */ case KEY_UP: if (obj->prev !=NULL ) { obj = obj->prev; --n; } else { obj = last; n = max; } break; case KEY_DOWN: if (obj->next != NULL) { obj = obj->next; ++n; } else { obj = first; n = 0; } break; case SEL_TAB: if (n < max) ++n; else n = 0; break; /* The user has pressed enter over a button object */ case SEL_BUTTON: if (cancelbutton) cancel = TRUE, quit = TRUE; else { if (verifySettings()) quit = TRUE; } break; /* Generic CR handler */ case SEL_CR: if (n < max) ++n; else n = 0; break; case SEL_BACKTAB: if (n) --n; else n = max; break; case KEY_F(1): display_helpfile(); /* They tried some key combination we don't support - tell them! */ default: beep(); } /* BODGE ALERT! */ if (((tmp = index(hostname, '.')) != NULL) && (strlen(domainname)==0)) { strncpy(domainname, tmp + 1, strlen(tmp + 1)); domainname[strlen(tmp+1)] = '\0'; RefreshStringObj(layout[1].obj); } } /* Clear this crap off the screen */ dialog_clear(); refresh(); 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 layers */ 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; strcpy(di->ipaddr, ipaddr); strcpy(di->netmask, netmask); 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); restorescr(save); return DITEM_SUCCESS; } restorescr(save); return DITEM_FAILURE; } static int netHook(dialogMenuItem *self) { Device **devs; devs = deviceFind(self->prompt, DEVICE_TYPE_NETWORK); if (devs) { tcpOpenDialog(devs[0]); mediaDevice = devs[0]; } return devs ? DITEM_LEAVE_MENU : DITEM_FAILURE; } /* Get a network device */ Boolean tcpDeviceSelect(void) { DMenu *menu; Device **devs; int cnt; int status; devs = deviceFind(NULL, DEVICE_TYPE_NETWORK); cnt = deviceCount(devs); if (!cnt) { msgConfirm("No network devices available!"); status = FALSE; } else if (cnt == 1 || (!RunningAsInit && !Fake)) { /* If we're running in user mode, assume network already up */ if (RunningAsInit) tcpOpenDialog(devs[0]); else msgDebug("Running multi-user, assuming that the network is already up\n"); mediaDevice = devs[0]; status = TRUE; } else { menu = deviceCreateMenu(&MenuNetworkDevice, DEVICE_TYPE_NETWORK, netHook, NULL); if (!menu) msgFatal("Unable to create network device menu! Argh!"); status = dmenuOpenSimple(menu); free(menu); } return status; } /* Do it from a menu that doesn't care about status */ int tcpMenuSelect(dialogMenuItem *self) { (void)tcpDeviceSelect(); configResolv(); return DITEM_SUCCESS | DITEM_RECREATE | DITEM_RESTORE; }