aboutsummaryrefslogtreecommitdiff
path: root/usr.sbin/sysinstall/network.c
blob: c57ad3de90a6bf4f6d0b98d80b8ce78fe7caac73 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
/*
 * The new sysinstall program.
 *
 * This is probably the last attempt in the `sysinstall' line, the next
 * generation being slated to essentially a complete rewrite.
 *
 * $FreeBSD$
 *
 * Copyright (c) 1995
 *	Jordan 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 JORDAN HUBBARD ``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 JORDAN HUBBARD OR HIS PETS 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.
 *
 */

/* These routines deal with getting things off of network media */

#include "sysinstall.h"
#include <signal.h>
#include <termios.h>
#include <sys/fcntl.h>
#include <sys/ioctl.h>
#include <sys/stat.h>

static Boolean	networkInitialized;
static pid_t	startPPP(Device *devp);

static pid_t	pppPID;

Boolean
mediaInitNetwork(Device *dev)
{
    int i;
    char *rp;
    char *cp, ifconfig[255];
    WINDOW *w;
    
    if (!RunningAsInit || networkInitialized)
	return TRUE;

    if (isDebug())
	msgDebug("Init routine called for network device %s.\n", dev->name);

    if (!file_readable("/etc/resolv.conf")) {
	if (DITEM_STATUS(configResolv(NULL)) == DITEM_FAILURE) {
	    msgConfirm("Can't seem to write out /etc/resolv.conf.  Net cannot be used.");
	    return FALSE;
	}
    }

    w = savescr();
    dialog_clear_norefresh();

    /* Old PPP process lying around? */
    if (pppPID) {
	msgConfirm("Killing previous PPP process %d.", pppPID);
	kill(pppPID, SIGTERM);
	pppPID = 0;
    }
    if (!strncmp("ppp", dev->name, 3)) {	/* PPP? */
	if (!(pppPID = startPPP(dev))) {
	    msgConfirm("Unable to start PPP!  This installation method cannot be used.");
	    return FALSE;
	}
	networkInitialized = TRUE;
	return TRUE;
    }
    else if (!strncmp("sl", dev->name, 2)) {	/* SLIP? */
	char *val;
	char attach[256];

	/* Cheesy slip attach */
	snprintf(attach, 256, "slattach -a -h -l -s 9600 %s", dev->devname);
	val = msgGetInput(attach,
			  "Warning:  SLIP is rather poorly supported in this revision\n"
			  "of the installation due to the lack of a dialing utility.\n"
			  "If you can use PPP for this instead then you're much better\n"
			  "off doing so, otherwise SLIP works fairly well for *hardwired*\n"
			  "links.  Please edit the following slattach command for\n"
			  "correctness (default here is: VJ compression, Hardware flow-\n"
			  "control, ignore carrier and 9600 baud data rate).  When you're\n"
			  "ready, press [ENTER] to execute it.");
	if (!val) {
	    msgConfirm("slattach command was empty.  Try again!");
	    restorescr(w);
	    return FALSE;
	}
	else
	    SAFE_STRCPY(attach, val);
	/*
	 * Doing this with vsystem() is actually bogus since we should be storing the pid of slattach
	 * for later killing.  It's just too convenient to call vsystem(), however, rather than
	 * constructing a proper argument for exec() so we punt on doing slip right for now.
	 */
	if (vsystem("%s", attach)) {
	    msgConfirm("slattach returned a bad status!  Please verify that\n"
		       "the command is correct and try this operation again.");
	    restorescr(w);
	    return FALSE;
	}
	restorescr(w);
    }

    snprintf(ifconfig, 255, "%s%s", VAR_IFCONFIG, dev->name);
    cp = variable_get(ifconfig);
    if (cp) {
	if (strcmp(cp, "DHCP")) {
	    msgDebug("ifconfig %s %s\n", dev->name, cp);
	    i = vsystem("ifconfig %s %s", dev->name, cp);
	    if (i) {
		msgConfirm("Unable to configure the %s interface!\n"
			   "This installation method cannot be used.",
			   dev->name);
		return FALSE;
	    }
	    rp = variable_get(VAR_GATEWAY);
	    if (!rp || *rp == '0') {
		msgConfirm("No gateway has been set. You may be unable to access hosts\n"
			   "not on your local network");
	    }
	    else {
		msgDebug("Adding default route to %s.\n", rp);
		vsystem("route -n add default %s", rp);
	    }
	}
    } else if ((cp = variable_get(VAR_IPV6ADDR)) == NULL || *cp == '\0') {
	msgConfirm("The %s device is not configured.  You will need to do so\n"
		   "in the Networking configuration menu before proceeding.", dev->name);
	return FALSE;
    }

    if (isDebug())
	msgDebug("Network initialized successfully.\n");
    networkInitialized = TRUE;
    return TRUE;
}

void
mediaShutdownNetwork(Device *dev)
{
    char *cp;

    if (!RunningAsInit || !networkInitialized)
	return;

    msgDebug("Shutdown called for network device %s\n", dev->name);
    /* Not a serial device? */
    if (strncmp("sl", dev->name, 2) && strncmp("ppp", dev->name, 3)) {
	int i;
	char ifconfig[255];

	snprintf(ifconfig, 255, "%s%s", VAR_IFCONFIG, dev->name);
	cp = variable_get(ifconfig);
	if (!cp)
	    return;
	msgDebug("ifconfig %s down\n", dev->name);
	i = vsystem("ifconfig %s down", dev->name);
	if (i)
	    msgConfirm("Warning: Unable to down the %s interface properly", dev->name);
	cp = variable_get(VAR_GATEWAY);
	if (cp) {
	    msgDebug("Deleting default route.\n");
	    vsystem("route -n delete default");
	}
    }
    else if (pppPID) {
	msgConfirm("Killing previous PPP process %d.", pppPID);
	kill(pppPID, SIGTERM);
	pppPID = 0;
    }
    networkInitialized = FALSE;
}

/* Start PPP on the 3rd screen */
static pid_t
startPPP(Device *devp)
{
    int fd2, pulse;
    FILE *fp;
    char *val;
    pid_t pid = 0;
    char myaddr[16], provider[16], speed[16], authname[32], authkey[16];
    char phone[16];
    WINDOW *w = savescr();
    
    /* These are needed to make ppp work */
    Mkdir("/var/log");
    Mkdir("/var/run");
    Mkdir("/var/spool/lock");
    Mkdir("/etc/ppp");

    dialog_clear_norefresh();
    if (!variable_get(VAR_SERIAL_SPEED))
	variable_set2(VAR_SERIAL_SPEED, "115200", 0);
    /* Get any important user values */
    val = variable_get_value(VAR_SERIAL_SPEED,
		      "Enter the baud rate for your modem - this can be higher than the actual\n"
		      "maximum data rate since most modems can talk at one speed to the\n"
		      "computer and at another speed to the remote end.\n\n"
		      "If you're not sure what to put here, just select the default.", 0);
    SAFE_STRCPY(speed, (val && *val) ? val : "115200");

    val = variable_get(VAR_GATEWAY);
    SAFE_STRCPY(provider, (val && *val) ? val : "0");

    dialog_clear_norefresh();
    val = msgGetInput(provider, "Enter the IP address of your service provider or 0 if you\n"
		      "don't know it and would prefer to negotiate it dynamically.");
    SAFE_STRCPY(provider, (val && *val) ? val : "0");

    if (devp->private && ((DevInfo *)devp->private)->ipaddr[0])
	SAFE_STRCPY(myaddr, ((DevInfo *)devp->private)->ipaddr);
    else
	strcpy(myaddr, "0");

    if (!Fake)
	fp = fopen("/etc/ppp/ppp.linkup", "w");
    else
	fp = fopen("/dev/stderr", "w");
    if (fp != NULL) {
	fprintf(fp, "MYADDR:\n");
	fprintf(fp, " delete ALL\n");
        fprintf(fp, " add 0 0 HISADDR\n");
	fchmod(fileno(fp), 0755);
	fclose(fp);
    }
    if (!Fake)
	fd2 = open("/etc/ppp/ppp.secret", O_CREAT);
    else
	fd2 = -1;
    if (fd2 != -1) {
	fchmod(fd2, 0700);
	close(fd2);
    }
    if (!Fake)
	fp = fopen("/etc/ppp/ppp.conf", "a");
    else
	fp = fopen("/dev/stderr", "w");
    if (!fp) {
	msgConfirm("Couldn't open /etc/ppp/ppp.conf file!  This isn't going to work");
	restorescr(w);
	return 0;
    }
    authname[0] = '\0';
    pulse = 0;
    dialog_clear_norefresh();
    if (!dialog_yesno("", "Does your ISP support PAP or CHAP ppp logins?", -1, -1)) {
	val = msgGetInput(NULL, "Enter the name you use to login to your provider.");
	SAFE_STRCPY(authname, val);
	dialog_clear_norefresh();
	val = msgGetInput(NULL, "Enter the password you use to login to your provider.");
	SAFE_STRCPY(authkey, val);
	dialog_clear_norefresh();
	val = msgGetInput(NULL, "Enter the your provider's login phone number.");
	SAFE_STRCPY(phone, val);
	dialog_clear_norefresh();
	pulse = dialog_yesno("", "Does your telephone line support tone dialing?", -1, -1);
    }
    fprintf(fp, "\ninstall:\n");
    fprintf(fp, " set speed %s\n", speed);
    fprintf(fp, " set device %s\n", devp->devname);
    fprintf(fp, " set ifaddr %s %s 255.255.255.0 0.0.0.0\n", myaddr, provider);
    fprintf(fp, " add! default HISADDR\n");
    fprintf(fp, " set timeout 0\n");
    fprintf(fp, " enable dns\n");
    fprintf(fp, " set log local phase\n");
    if(authname[0] != '\0'){
	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');
	fprintf(fp, " set login\n");
	fprintf(fp, " set authname %s\n", authname);
	fprintf(fp, " set authkey %s\n", authkey);
	fprintf(fp, " set phone %s\n", phone);
    }
    if (fchmod(fileno(fp), 0600) != 0)
	msgConfirm("Warning: Failed to fix permissions on /etc/ppp/ppp.conf !");
    fclose(fp);

    /* Make the ppp config persistent */
    variable_set2(VAR_PPP_ENABLE, "YES", 0);
    variable_set2(VAR_PPP_PROFILE, "install", 0);

    if (!Fake && !file_readable("/dev/tun0") && mknod("/dev/tun0", 0600 | S_IFCHR, makedev(52, 0))) {
	msgConfirm("Warning:  No /dev/tun0 device.  PPP will not work!");
	restorescr(w);
	return 0;
    }

    if (isDebug())
	msgDebug("About to start PPP on device %s @ %s baud.  Provider = %s\n", devp->devname, speed, provider);

    if (!Fake && !(pid = fork())) {
	int i, fd;
	struct termios foo;
	extern int login_tty(int);

	for (i = getdtablesize(); i >= 0; i--)
	    close(i);

	/* We're going over to VTY2 */
	fd = open("/dev/ttyv2", O_RDWR);
	ioctl(0, TIOCSCTTY, &fd);
	dup2(0, 1);
	dup2(0, 2);
	DebugFD = 2;
	if (login_tty(fd) == -1)
	    msgDebug("ppp: Can't set the controlling terminal.\n");
	signal(SIGTTOU, SIG_IGN);
	if (tcgetattr(fd, &foo) != -1) {
	    foo.c_cc[VERASE] = '\010';
	    if (tcsetattr(fd, TCSANOW, &foo) == -1)
		msgDebug("ppp: Unable to set the erase character.\n");
	}
	else
	    msgDebug("ppp: Unable to get the terminal attributes!\n");
	execlp("ppp", "ppp", "install", (char *)NULL);
	msgDebug("PPP process failed to exec!\n");
	exit(1);
    }
    else {
	dialog_clear_norefresh();
	msgConfirm("NOTICE: The PPP command is now started on VTY3 (type ALT-F3 to\n"
           "interact with it, ALT-F1 to switch back here). If you are using\n"
           "a PAP or CHAP login simply enter \"dial\", otherwise you'll need\n"
           "to use the \"term\" command which starts a terminal emulator\n"
           "which you can use to talk to your modem and dial the service\n"
           "provider.  Once you're connected, come back to this screen and\n"
           "press return.\n\n"
           "DO NOT PRESS [ENTER] HERE UNTIL THE CONNECTION IS FULLY\n"
           "ESTABLISHED!");
    }
    restorescr(w);
    return pid;
}