defs.c revision 78275 
1/*-
2 * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/usr.sbin/ppp/defs.c 78275 2001-06-15 13:58:06Z brian $
27 */
28
29
30#include <sys/types.h>
31#include <netdb.h>
32#include <netinet/in.h>
33#include <arpa/inet.h>
34#include <sys/socket.h>
35
36#include <ctype.h>
37#include <errno.h>
38#include <stdio.h>
39#include <stdlib.h>
40#include <string.h>
41#include <termios.h>
42#if !defined(__FreeBSD__) || __FreeBSD__ < 3
43#include <time.h>
44#endif
45#include <unistd.h>
46
47#include "defs.h"
48
49#define	issep(c)	((c) == '\t' || (c) == ' ')
50
51#if defined(__NetBSD__) || __FreeBSD__ < 3
52void
53randinit()
54{
55#if defined(__FreeBSD__)
56  static int initdone;		/* srandomdev() call is only required once */
57
58  if (!initdone) {
59    initdone = 1;
60    srandomdev();
61  }
62#else
63  srandom((time(NULL)^getpid())+random());
64#endif
65}
66#endif
67
68ssize_t
69fullread(int fd, void *v, size_t n)
70{
71  size_t got, total;
72
73  for (total = 0; total < n; total += got)
74    switch ((got = read(fd, (char *)v + total, n - total))) {
75      case 0:
76        return total;
77      case -1:
78        if (errno == EINTR)
79          got = 0;
80        else
81          return -1;
82    }
83  return total;
84}
85
86static struct {
87  int mode;
88  const char *name;
89} modes[] = {
90  { PHYS_INTERACTIVE, "interactive" },
91  { PHYS_AUTO, "auto" },
92  { PHYS_DIRECT, "direct" },
93  { PHYS_DEDICATED, "dedicated" },
94  { PHYS_DDIAL, "ddial" },
95  { PHYS_BACKGROUND, "background" },
96  { PHYS_FOREGROUND, "foreground" },
97  { PHYS_ALL, "*" },
98  { 0, 0 }
99};
100
101const char *
102mode2Nam(int mode)
103{
104  int m;
105
106  for (m = 0; modes[m].mode; m++)
107    if (modes[m].mode == mode)
108      return modes[m].name;
109
110  return "unknown";
111}
112
113int
114Nam2mode(const char *name)
115{
116  int m, got, len;
117
118  len = strlen(name);
119  got = -1;
120  for (m = 0; modes[m].mode; m++)
121    if (!strncasecmp(name, modes[m].name, len)) {
122      if (modes[m].name[len] == '\0')
123	return modes[m].mode;
124      if (got != -1)
125        return 0;
126      got = m;
127    }
128
129  return got == -1 ? 0 : modes[got].mode;
130}
131
132struct in_addr
133GetIpAddr(const char *cp)
134{
135  struct in_addr ipaddr;
136
137  if (!strcasecmp(cp, "default"))
138    ipaddr.s_addr = INADDR_ANY;
139  else if (inet_aton(cp, &ipaddr) == 0) {
140    const char *ptr;
141
142    /* Any illegal characters ? */
143    for (ptr = cp; *ptr != '\0'; ptr++)
144      if (!isalnum(*ptr) && strchr("-.", *ptr) == NULL)
145        break;
146
147    if (*ptr == '\0') {
148      struct hostent *hp;
149
150      hp = gethostbyname(cp);
151      if (hp && hp->h_addrtype == AF_INET)
152        memcpy(&ipaddr, hp->h_addr, hp->h_length);
153      else
154        ipaddr.s_addr = INADDR_NONE;
155    } else
156      ipaddr.s_addr = INADDR_NONE;
157  }
158
159  return ipaddr;
160}
161
162static const struct speeds {
163  int nspeed;
164  speed_t speed;
165} speeds[] = {
166#ifdef B50
167  { 50, B50, },
168#endif
169#ifdef B75
170  { 75, B75, },
171#endif
172#ifdef B110
173  { 110, B110, },
174#endif
175#ifdef B134
176  { 134, B134, },
177#endif
178#ifdef B150
179  { 150, B150, },
180#endif
181#ifdef B200
182  { 200, B200, },
183#endif
184#ifdef B300
185  { 300, B300, },
186#endif
187#ifdef B600
188  { 600, B600, },
189#endif
190#ifdef B1200
191  { 1200, B1200, },
192#endif
193#ifdef B1800
194  { 1800, B1800, },
195#endif
196#ifdef B2400
197  { 2400, B2400, },
198#endif
199#ifdef B4800
200  { 4800, B4800, },
201#endif
202#ifdef B9600
203  { 9600, B9600, },
204#endif
205#ifdef B19200
206  { 19200, B19200, },
207#endif
208#ifdef B38400
209  { 38400, B38400, },
210#endif
211#ifndef _POSIX_SOURCE
212#ifdef B7200
213  { 7200, B7200, },
214#endif
215#ifdef B14400
216  { 14400, B14400, },
217#endif
218#ifdef B28800
219  { 28800, B28800, },
220#endif
221#ifdef B57600
222  { 57600, B57600, },
223#endif
224#ifdef B76800
225  { 76800, B76800, },
226#endif
227#ifdef B115200
228  { 115200, B115200, },
229#endif
230#ifdef B230400
231  { 230400, B230400, },
232#endif
233#ifdef EXTA
234  { 19200, EXTA, },
235#endif
236#ifdef EXTB
237  { 38400, EXTB, },
238#endif
239#endif				/* _POSIX_SOURCE */
240  { 0, 0 }
241};
242
243int
244SpeedToInt(speed_t speed)
245{
246  const struct speeds *sp;
247
248  for (sp = speeds; sp->nspeed; sp++) {
249    if (sp->speed == speed) {
250      return sp->nspeed;
251    }
252  }
253  return 0;
254}
255
256speed_t
257IntToSpeed(int nspeed)
258{
259  const struct speeds *sp;
260
261  for (sp = speeds; sp->nspeed; sp++) {
262    if (sp->nspeed == nspeed) {
263      return sp->speed;
264    }
265  }
266  return B0;
267}
268
269char *
270findblank(char *p, int flags)
271{
272  int instring;
273
274  instring = 0;
275  while (*p) {
276    if (*p == '\\') {
277      if (flags & PARSE_REDUCE) {
278        memmove(p, p + 1, strlen(p));
279        if (!*p)
280          break;
281      } else
282        p++;
283    } else if (*p == '"') {
284      memmove(p, p + 1, strlen(p));
285      instring = !instring;
286      continue;
287    } else if (!instring && (issep(*p) ||
288                             (*p == '#' && !(flags & PARSE_NOHASH))))
289      return p;
290    p++;
291  }
292
293  return instring ? NULL : p;
294}
295
296int
297MakeArgs(char *script, char **pvect, int maxargs, int flags)
298{
299  int nargs;
300
301  nargs = 0;
302  while (*script) {
303    script += strspn(script, " \t");
304    if (*script == '#' && !(flags & PARSE_NOHASH)) {
305      *script = '\0';
306      break;
307    }
308    if (*script) {
309      if (nargs >= maxargs - 1)
310        break;
311      *pvect++ = script;
312      nargs++;
313      script = findblank(script, flags);
314      if (script == NULL)
315        return -1;
316      else if (!(flags & PARSE_NOHASH) && *script == '#')
317        *script = '\0';
318      else if (*script)
319        *script++ = '\0';
320    }
321  }
322  *pvect = NULL;
323  return nargs;
324}
325
326const char *
327NumStr(long val, char *buf, size_t sz)
328{
329  static char result[23];		/* handles 64 bit numbers */
330
331  if (buf == NULL || sz == 0) {
332    buf = result;
333    sz = sizeof result;
334  }
335  snprintf(buf, sz, "<%ld>", val);
336  return buf;
337}
338
339const char *
340HexStr(long val, char *buf, size_t sz)
341{
342  static char result[21];		/* handles 64 bit numbers */
343
344  if (buf == NULL || sz == 0) {
345    buf = result;
346    sz = sizeof result;
347  }
348  snprintf(buf, sz, "<0x%lx>", val);
349  return buf;
350}
351
352const char *
353ex_desc(int ex)
354{
355  static char num[12];		/* Used immediately if returned */
356  static const char * const desc[] = {
357    "normal", "start", "sock", "modem", "dial", "dead", "done",
358    "reboot", "errdead", "hangup", "term", "nodial", "nologin",
359    "redial", "reconnect"
360  };
361
362  if (ex >= 0 && ex < sizeof desc / sizeof *desc)
363    return desc[ex];
364  snprintf(num, sizeof num, "%d", ex);
365  return num;
366}
367
368void
369SetTitle(const char *title)
370{
371  if (title == NULL)
372    setproctitle(NULL);
373  else if (title[0] == '-' && title[1] != '\0')
374    setproctitle("-%s", title + 1);
375  else
376    setproctitle("%s", title);
377}
378
379fd_set *
380mkfdset()
381{
382  return (fd_set *)malloc(howmany(getdtablesize(), NFDBITS) * sizeof (fd_mask));
383}
384
385void
386zerofdset(fd_set *s)
387{
388  memset(s, '\0', howmany(getdtablesize(), NFDBITS) * sizeof (fd_mask));
389}
390