1/*
2 * The new sysinstall program.
3 *
4 * This is probably the last attempt in the `sysinstall' line, the next
5 * generation being slated to essentially a complete rewrite.
6 *
7 * $FreeBSD: head/usr.sbin/sysinstall/network.c 79304 2001-07-05 09:51:09Z kris $
8 *
9 * Copyright (c) 1995
10 * Jordan Hubbard. All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer,
17 * verbatim and that no modifications are made prior to this
18 * point in the file.
19 *
20 * 2. Redistributions in binary form must reproduce the above copyright
21 * notice, this list of conditions and the following disclaimer in the
22 * documentation and/or other materials provided with the distribution.
23 *
24 * THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL JORDAN HUBBARD OR HIS PETS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 */
37
38/* These routines deal with getting things off of network media */
39
40#include "sysinstall.h"
41#include <signal.h>
42#include <termios.h>
43#include <sys/fcntl.h>
44#include <sys/ioctl.h>
45#include <sys/stat.h>
46
47static Boolean networkInitialized;
48static pid_t startPPP(Device *devp);
49
50static pid_t pppPID;
51
52Boolean
53mediaInitNetwork(Device *dev)
54{
55 int i;
56 char *rp;
57 char *cp, ifconfig[255];
58 WINDOW *w;
59
60 if (!RunningAsInit || networkInitialized)
61 return TRUE;
62
63 if (isDebug())
64 msgDebug("Init routine called for network device %s.\n", dev->name);
65
66 if (!file_readable("/etc/resolv.conf")) {
67 if (DITEM_STATUS(configResolv(NULL)) == DITEM_FAILURE) {
68 msgConfirm("Can't seem to write out /etc/resolv.conf. Net cannot be used.");
69 return FALSE;
70 }
71 }
72
73 w = savescr();
74 dialog_clear_norefresh();
75
76 /* Old PPP process lying around? */
77 if (pppPID) {
78 msgConfirm("Killing previous PPP process %d.", pppPID);
79 kill(pppPID, SIGTERM);
80 pppPID = 0;
81 }
82 if (!strncmp("ppp", dev->name, 3)) { /* PPP? */
83 if (!(pppPID = startPPP(dev))) {
84 msgConfirm("Unable to start PPP! This installation method cannot be used.");
85 return FALSE;
86 }
87 networkInitialized = TRUE;
88 return TRUE;
89 }
90 else if (!strncmp("sl", dev->name, 2)) { /* SLIP? */
91 char *val;
92 char attach[256];
93
94 /* Cheesy slip attach */
95 snprintf(attach, 256, "slattach -a -h -l -s 9600 %s", dev->devname);
96 val = msgGetInput(attach,
97 "Warning: SLIP is rather poorly supported in this revision\n"
98 "of the installation due to the lack of a dialing utility.\n"
99 "If you can use PPP for this instead then you're much better\n"
100 "off doing so, otherwise SLIP works fairly well for *hardwired*\n"
101 "links. Please edit the following slattach command for\n"
102 "correctness (default here is: VJ compression, Hardware flow-\n"
103 "control, ignore carrier and 9600 baud data rate). When you're\n"
104 "ready, press [ENTER] to execute it.");
105 if (!val) {
106 msgConfirm("slattach command was empty. Try again!");
107 restorescr(w);
108 return FALSE;
109 }
110 else
111 SAFE_STRCPY(attach, val);
112 /*
113 * Doing this with vsystem() is actually bogus since we should be storing the pid of slattach
114 * for later killing. It's just too convenient to call vsystem(), however, rather than
115 * constructing a proper argument for exec() so we punt on doing slip right for now.
116 */
117 if (vsystem("%s", attach)) {
118 msgConfirm("slattach returned a bad status! Please verify that\n"
119 "the command is correct and try this operation again.");
120 restorescr(w);
121 return FALSE;
122 }
123 restorescr(w);
124 }
125
126 snprintf(ifconfig, 255, "%s%s", VAR_IFCONFIG, dev->name);
127 cp = variable_get(ifconfig);
128 if (cp) {
129 if (strcmp(cp, "DHCP")) {
130 msgDebug("ifconfig %s %s", dev->name, cp);
131 i = vsystem("ifconfig %s %s", dev->name, cp);
132 if (i) {
133 msgConfirm("Unable to configure the %s interface!\n"
134 "This installation method cannot be used.",
135 dev->name);
136 return FALSE;
137 }
138 rp = variable_get(VAR_GATEWAY);
139 if (!rp || *rp == '0') {
140 msgConfirm("No gateway has been set. You may be unable to access hosts\n"
141 "not on your local network");
142 }
143 else {
144 msgDebug("Adding default route to %s.", rp);
145 vsystem("route -n add default %s", rp);
146 }
147 }
148 } else if ((cp = variable_get(VAR_IPV6ADDR)) == NULL || *cp == '\0') {
149 msgConfirm("The %s device is not configured. You will need to do so\n"
150 "in the Networking configuration menu before proceeding.", dev->name);
151 return FALSE;
152 }
153
154 if (isDebug())
155 msgDebug("Network initialized successfully.\n");
156 networkInitialized = TRUE;
157 return TRUE;
158}
159
160void
161mediaShutdownNetwork(Device *dev)
162{
163 char *cp;
164
165 if (!RunningAsInit || !networkInitialized)
166 return;
167
168 msgDebug("Shutdown called for network device %s\n", dev->name);
169 /* Not a serial device? */
170 if (strncmp("sl", dev->name, 2) && strncmp("ppp", dev->name, 3)) {
171 int i;
172 char ifconfig[255];
173
174 snprintf(ifconfig, 255, "%s%s", VAR_IFCONFIG, dev->name);
175 cp = variable_get(ifconfig);
176 if (!cp)
177 return;
178 msgDebug("ifconfig %s down", dev->name);
179 i = vsystem("ifconfig %s down", dev->name);
180 if (i)
181 msgConfirm("Warning: Unable to down the %s interface properly", dev->name);
182 cp = variable_get(VAR_GATEWAY);
183 if (cp) {
184 msgDebug("Deleting default route.");
185 vsystem("route -n delete default");
186 }
187 }
188 else if (pppPID) {
189 msgConfirm("Killing previous PPP process %d.", pppPID);
190 kill(pppPID, SIGTERM);
191 pppPID = 0;
192 }
193 networkInitialized = FALSE;
194}
195
196/* Start PPP on the 3rd screen */
197static pid_t
198startPPP(Device *devp)
199{
200 int fd2, pulse;
201 FILE *fp;
202 char *val;
203 pid_t pid = 0;
204 char myaddr[16], provider[16], speed[16], authname[32], authkey[16];
205 char phone[16];
206 WINDOW *w = savescr();
207
208 /* These are needed to make ppp work */
209 Mkdir("/var/log");
210 Mkdir("/var/run");
211 Mkdir("/var/spool/lock");
212 Mkdir("/etc/ppp");
213
214 dialog_clear_norefresh();
215 if (!variable_get(VAR_SERIAL_SPEED))
216 variable_set2(VAR_SERIAL_SPEED, "115200", 0);
217 /* Get any important user values */
218 val = variable_get_value(VAR_SERIAL_SPEED,
219 "Enter the baud rate for your modem - this can be higher than the actual\n"
220 "maximum data rate since most modems can talk at one speed to the\n"
221 "computer and at another speed to the remote end.\n\n"
222 "If you're not sure what to put here, just select the default.", 0);
223 SAFE_STRCPY(speed, (val && *val) ? val : "115200");
224
225 val = variable_get(VAR_GATEWAY);
226 SAFE_STRCPY(provider, (val && *val) ? val : "0");
227
228 dialog_clear_norefresh();
229 val = msgGetInput(provider, "Enter the IP address of your service provider or 0 if you\n"
230 "don't know it and would prefer to negotiate it dynamically.");
231 SAFE_STRCPY(provider, (val && *val) ? val : "0");
232
233 if (devp->private && ((DevInfo *)devp->private)->ipaddr[0])
234 SAFE_STRCPY(myaddr, ((DevInfo *)devp->private)->ipaddr);
235 else
236 strcpy(myaddr, "0");
237
238 if (!Fake)
239 fp = fopen("/etc/ppp/ppp.linkup", "w");
240 else
241 fp = fopen("/dev/stderr", "w");
242 if (fp != NULL) {
243 fprintf(fp, "MYADDR:\n");
244 fprintf(fp, " delete ALL\n");
245 fprintf(fp, " add 0 0 HISADDR\n");
246 fchmod(fileno(fp), 0755);
247 fclose(fp);
248 }
249 if (!Fake)
250 fd2 = open("/etc/ppp/ppp.secret", O_CREAT);
251 else
252 fd2 = -1;
253 if (fd2 != -1) {
254 fchmod(fd2, 0700);
255 close(fd2);
256 }
257 if (!Fake)
258 fp = fopen("/etc/ppp/ppp.conf", "a");
259 else
260 fp = fopen("/dev/stderr", "w");
261 if (!fp) {
262 msgConfirm("Couldn't open /etc/ppp/ppp.conf file! This isn't going to work");
263 restorescr(w);
264 return 0;
265 }
266 authname[0] = '\0';
267 pulse = 0;
268 dialog_clear_norefresh();
269 if (!dialog_yesno("", "Does your ISP support PAP or CHAP ppp logins?", -1, -1)) {
270 val = msgGetInput(NULL, "Enter the name you use to login to your provider.");
271 SAFE_STRCPY(authname, val);
272 dialog_clear_norefresh();
273 val = msgGetInput(NULL, "Enter the password you use to login to your provider.");
274 SAFE_STRCPY(authkey, val);
275 dialog_clear_norefresh();
276 val = msgGetInput(NULL, "Enter the your provider's login phone number.");
277 SAFE_STRCPY(phone, val);
278 dialog_clear_norefresh();
279 pulse = dialog_yesno("", "Does your telephone line support tone dialing?", -1, -1);
280 }
281 fprintf(fp, "\ninstall:\n");
282 fprintf(fp, " set speed %s\n", speed);
283 fprintf(fp, " set device %s\n", devp->devname);
284 fprintf(fp, " set ifaddr %s %s 255.255.255.0 0.0.0.0\n", myaddr, provider);
285 fprintf(fp, " add! default HISADDR\n");
286 fprintf(fp, " set timeout 0\n");
287 fprintf(fp, " enable dns\n");
288 fprintf(fp, " set log local phase\n");
289 if(authname[0] != '\0'){
290 fprintf(fp, " set dial \"ABORT BUSY ABORT NO\\\\sCARRIER TIMEOUT 5 \\\"\\\" AT OK-AT-OK ATE1Q0 OK \\\\dATD%c\\\\T TIMEOUT 40 CONNECT\"\n", pulse ? 'P' : 'T');
291 fprintf(fp, " set login\n");
292 fprintf(fp, " set authname %s\n", authname);
293 fprintf(fp, " set authkey %s\n", authkey);
294 fprintf(fp, " set phone %s\n", phone);
295 }
296 if (fchmod(fileno(fp), 0600) != 0)
297 msgConfirm("Warning: Failed to fix permissions on /etc/ppp/ppp.conf !");
298 fclose(fp);
299
300 /* Make the ppp config persistent */
301 variable_set2(VAR_PPP_ENABLE, "YES", 0);
302 variable_set2(VAR_PPP_PROFILE, "install", 0);
303
304 if (!Fake && !file_readable("/dev/tun0") && mknod("/dev/tun0", 0600 | S_IFCHR, makedev(52, 0))) {
305 msgConfirm("Warning: No /dev/tun0 device. PPP will not work!");
306 restorescr(w);
307 return 0;
308 }
309
310 if (isDebug())
311 msgDebug("About to start PPP on device %s @ %s baud. Provider = %s\n", devp->devname, speed, provider);
312
313 if (!Fake && !(pid = fork())) {
314 int i, fd;
315 struct termios foo;
316 extern int login_tty(int);
317
318 for (i = getdtablesize(); i >= 0; i--)
319 close(i);
320
321 /* We're going over to VTY2 */
322 fd = open("/dev/ttyv2", O_RDWR);
323 ioctl(0, TIOCSCTTY, &fd);
324 dup2(0, 1);
325 dup2(0, 2);
326 DebugFD = 2;
327 if (login_tty(fd) == -1)
328 msgDebug("ppp: Can't set the controlling terminal.\n");
329 signal(SIGTTOU, SIG_IGN);
330 if (tcgetattr(fd, &foo) != -1) {
331 foo.c_cc[VERASE] = '\010';
332 if (tcsetattr(fd, TCSANOW, &foo) == -1)
333 msgDebug("ppp: Unable to set the erase character.\n");
334 }
335 else
336 msgDebug("ppp: Unable to get the terminal attributes!\n");
337 execlp("ppp", "ppp", "install", (char *)NULL);
338 msgDebug("PPP process failed to exec!\n");
339 exit(1);
340 }
341 else {
342 dialog_clear_norefresh();
343 msgConfirm("NOTICE: The PPP command is now started on VTY3 (type ALT-F3 to\n"
344 "interact with it, ALT-F1 to switch back here). If you are using\n"
345 "a PAP or CHAP login simply enter \"dial\", otherwise you'll need\n"
346 "to use the \"term\" command which starts a terminal emulator\n"
347 "which you can use to talk to your modem and dial the service\n"
348 "provider. Once you're connected, come back to this screen and\n"
349 "press return.\n\n"
350 "DO NOT PRESS [ENTER] HERE UNTIL THE CONNECTION IS FULLY\n"
351 "ESTABLISHED!");
352 }
353 restorescr(w);
354 return pid;
355}