summaryrefslogtreecommitdiffstats
path: root/usr.sbin/ppp/defs.c
blob: f29eff655ca8d55d1e333ec8fdb6412235edfac3 (plain)
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
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
/*-
 * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
 * 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.
 * 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 AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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, 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.
 *
 * $FreeBSD$
 */


#include <sys/param.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <sys/socket.h>

#include <ctype.h>
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
#include <sys/module.h>
#endif
#include <termios.h>
#if !defined(__FreeBSD__) || __FreeBSD__ < 3
#include <time.h>
#endif
#include <unistd.h>

#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
#include "id.h"
#include "log.h"
#endif
#include "defs.h"

#define	issep(c)	((c) == '\t' || (c) == ' ')

#if defined(__NetBSD__) || __FreeBSD__ < 3
void
randinit()
{
#if defined(__FreeBSD__)
  static int initdone;		/* srandomdev() call is only required once */

  if (!initdone) {
    initdone = 1;
    srandomdev();
  }
#else
  srandom((time(NULL)^getpid())+random());
#endif
}
#endif

ssize_t
fullread(int fd, void *v, size_t n)
{
  size_t got, total;

  for (total = 0; total < n; total += got)
    switch ((got = read(fd, (char *)v + total, n - total))) {
      case 0:
        return total;
      case -1:
        if (errno == EINTR)
          got = 0;
        else
          return -1;
    }
  return total;
}

static struct {
  int mode;
  const char *name;
} modes[] = {
  { PHYS_INTERACTIVE, "interactive" },
  { PHYS_AUTO, "auto" },
  { PHYS_DIRECT, "direct" },
  { PHYS_DEDICATED, "dedicated" },
  { PHYS_DDIAL, "ddial" },
  { PHYS_BACKGROUND, "background" },
  { PHYS_FOREGROUND, "foreground" },
  { PHYS_ALL, "*" },
  { 0, 0 }
};

const char *
mode2Nam(int mode)
{
  int m;

  for (m = 0; modes[m].mode; m++)
    if (modes[m].mode == mode)
      return modes[m].name;

  return "unknown";
}

int
Nam2mode(const char *name)
{
  int m, got, len;

  len = strlen(name);
  got = -1;
  for (m = 0; modes[m].mode; m++)
    if (!strncasecmp(name, modes[m].name, len)) {
      if (modes[m].name[len] == '\0')
	return modes[m].mode;
      if (got != -1)
        return 0;
      got = m;
    }

  return got == -1 ? 0 : modes[got].mode;
}

struct in_addr
GetIpAddr(const char *cp)
{
  struct in_addr ipaddr;

  if (!strcasecmp(cp, "default"))
    ipaddr.s_addr = INADDR_ANY;
  else if (inet_aton(cp, &ipaddr) == 0) {
    const char *ptr;

    /* Any illegal characters ? */
    for (ptr = cp; *ptr != '\0'; ptr++)
      if (!isalnum(*ptr) && strchr("-.", *ptr) == NULL)
        break;

    if (*ptr == '\0') {
      struct hostent *hp;

      hp = gethostbyname(cp);
      if (hp && hp->h_addrtype == AF_INET)
        memcpy(&ipaddr, hp->h_addr, hp->h_length);
      else
        ipaddr.s_addr = INADDR_NONE;
    } else
      ipaddr.s_addr = INADDR_NONE;
  }

  return ipaddr;
}

static const struct speeds {
  int nspeed;
  speed_t speed;
} speeds[] = {
#ifdef B50
  { 50, B50, },
#endif
#ifdef B75
  { 75, B75, },
#endif
#ifdef B110
  { 110, B110, },
#endif
#ifdef B134
  { 134, B134, },
#endif
#ifdef B150
  { 150, B150, },
#endif
#ifdef B200
  { 200, B200, },
#endif
#ifdef B300
  { 300, B300, },
#endif
#ifdef B600
  { 600, B600, },
#endif
#ifdef B1200
  { 1200, B1200, },
#endif
#ifdef B1800
  { 1800, B1800, },
#endif
#ifdef B2400
  { 2400, B2400, },
#endif
#ifdef B4800
  { 4800, B4800, },
#endif
#ifdef B9600
  { 9600, B9600, },
#endif
#ifdef B19200
  { 19200, B19200, },
#endif
#ifdef B38400
  { 38400, B38400, },
#endif
#ifndef _POSIX_SOURCE
#ifdef B7200
  { 7200, B7200, },
#endif
#ifdef B14400
  { 14400, B14400, },
#endif
#ifdef B28800
  { 28800, B28800, },
#endif
#ifdef B57600
  { 57600, B57600, },
#endif
#ifdef B76800
  { 76800, B76800, },
#endif
#ifdef B115200
  { 115200, B115200, },
#endif
#ifdef B230400
  { 230400, B230400, },
#endif
#ifdef B460800
  { 460800, B460800, },
#endif
#ifdef B921600
  { 921600, B921600, },
#endif
#ifdef EXTA
  { 19200, EXTA, },
#endif
#ifdef EXTB
  { 38400, EXTB, },
#endif
#endif				/* _POSIX_SOURCE */
  { 0, 0 }
};

int
SpeedToInt(speed_t speed)
{
  const struct speeds *sp;

  for (sp = speeds; sp->nspeed; sp++) {
    if (sp->speed == speed) {
      return sp->nspeed;
    }
  }
  return 0;
}

speed_t
IntToSpeed(int nspeed)
{
  const struct speeds *sp;

  for (sp = speeds; sp->nspeed; sp++) {
    if (sp->nspeed == nspeed) {
      return sp->speed;
    }
  }
  return B0;
}

char *
findblank(char *p, int flags)
{
  int instring;

  instring = 0;
  while (*p) {
    if (*p == '\\') {
      if (flags & PARSE_REDUCE) {
        memmove(p, p + 1, strlen(p));
        if (!*p)
          break;
      } else
        p++;
    } else if (*p == '"') {
      memmove(p, p + 1, strlen(p));
      instring = !instring;
      continue;
    } else if (!instring && (issep(*p) ||
                             (*p == '#' && !(flags & PARSE_NOHASH))))
      return p;
    p++;
  }

  return instring ? NULL : p;
}

int
MakeArgs(char *script, char **pvect, int maxargs, int flags)
{
  int nargs;

  nargs = 0;
  while (*script) {
    script += strspn(script, " \t");
    if (*script == '#' && !(flags & PARSE_NOHASH)) {
      *script = '\0';
      break;
    }
    if (*script) {
      if (nargs >= maxargs - 1)
        break;
      *pvect++ = script;
      nargs++;
      script = findblank(script, flags);
      if (script == NULL)
        return -1;
      else if (!(flags & PARSE_NOHASH) && *script == '#')
        *script = '\0';
      else if (*script)
        *script++ = '\0';
    }
  }
  *pvect = NULL;
  return nargs;
}

const char *
NumStr(long val, char *buf, size_t sz)
{
  static char result[23];		/* handles 64 bit numbers */

  if (buf == NULL || sz == 0) {
    buf = result;
    sz = sizeof result;
  }
  snprintf(buf, sz, "<%ld>", val);
  return buf;
}

const char *
HexStr(long val, char *buf, size_t sz)
{
  static char result[21];		/* handles 64 bit numbers */

  if (buf == NULL || sz == 0) {
    buf = result;
    sz = sizeof result;
  }
  snprintf(buf, sz, "<0x%lx>", val);
  return buf;
}

const char *
ex_desc(int ex)
{
  static char num[12];		/* Used immediately if returned */
  static const char * const desc[] = {
    "normal", "start", "sock", "modem", "dial", "dead", "done",
    "reboot", "errdead", "hangup", "term", "nodial", "nologin",
    "redial", "reconnect"
  };

  if (ex >= 0 && ex < sizeof desc / sizeof *desc)
    return desc[ex];
  snprintf(num, sizeof num, "%d", ex);
  return num;
}

void
SetTitle(const char *title)
{
  if (title == NULL)
    setproctitle(NULL);
  else if (title[0] == '-' && title[1] != '\0')
    setproctitle("-%s", title + 1);
  else
    setproctitle("%s", title);
}

fd_set *
mkfdset()
{
  return (fd_set *)malloc(howmany(getdtablesize(), NFDBITS) * sizeof (fd_mask));
}

void
zerofdset(fd_set *s)
{
  memset(s, '\0', howmany(getdtablesize(), NFDBITS) * sizeof (fd_mask));
}

void
Concatinate(char *buf, size_t sz, int argc, const char *const *argv)
{
  int i, n, pos;

  *buf = '\0';
  for (pos = i = 0; i < argc; i++) {
    n = snprintf(buf + pos, sz - pos, "%s%s", i ? " " : "", argv[i]);
    if (n < 0) {
      buf[pos] = '\0';
      break;
    }
    if ((pos += n) >= sz)
      break;
  }
}

int
loadmodules(int how, const char *module, ...)
{
  int loaded = 0;
#if defined(__FreeBSD__) && !defined(NOKLDLOAD)
  va_list ap;

  va_start(ap, module);
  while (module != NULL) {
    if (modfind(module) == -1) {
      if (ID0kldload(module) == -1) {
        if (how == LOAD_VERBOSLY)
          log_Printf(LogWARN, "%s: Cannot load module\n", module);
      } else
        loaded++;
    }
    module = va_arg(ap, const char *);
  }
  va_end(ap);
#endif
  return loaded;
}
OpenPOWER on IntegriCloud