defs.c revision 65264 
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 65264 2000-08-30 20:51:13Z 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#ifdef __OpenBSD__
39#include <util.h>
40#else
41#include <libutil.h>
42#endif
43#include <stdio.h>
44#include <stdlib.h>
45#include <string.h>
46#include <termios.h>
47#if !defined(__FreeBSD__) || __FreeBSD__ < 3
48#include <time.h>
49#endif
50#include <unistd.h>
51
52#include "defs.h"
53
54#define	issep(c)	((c) == '\t' || (c) == ' ')
55
56void
57randinit()
58{
59#if defined(__OpenBSD__) || __FreeBSD__ >= 3
60  static int initdone;		/* srandomdev() call is only required once */
61
62  if (!initdone) {
63    initdone = 1;
64    srandomdev();
65  }
66#else
67  srandom((time(NULL)^getpid())+random());
68#endif
69}
70
71ssize_t
72fullread(int fd, void *v, size_t n)
73{
74  size_t got, total;
75
76  for (total = 0; total < n; total += got)
77    switch ((got = read(fd, (char *)v + total, n - total))) {
78      case 0:
79        return total;
80      case -1:
81        if (errno == EINTR)
82          got = 0;
83        else
84          return -1;
85    }
86  return total;
87}
88
89static struct {
90  int mode;
91  const char *name;
92} modes[] = {
93  { PHYS_INTERACTIVE, "interactive" },
94  { PHYS_AUTO, "auto" },
95  { PHYS_DIRECT, "direct" },
96  { PHYS_DEDICATED, "dedicated" },
97  { PHYS_DDIAL, "ddial" },
98  { PHYS_BACKGROUND, "background" },
99  { PHYS_FOREGROUND, "foreground" },
100  { PHYS_ALL, "*" },
101  { 0, 0 }
102};
103
104const char *
105mode2Nam(int mode)
106{
107  int m;
108
109  for (m = 0; modes[m].mode; m++)
110    if (modes[m].mode == mode)
111      return modes[m].name;
112
113  return "unknown";
114}
115
116int
117Nam2mode(const char *name)
118{
119  int m, got, len;
120
121  len = strlen(name);
122  got = -1;
123  for (m = 0; modes[m].mode; m++)
124    if (!strncasecmp(name, modes[m].name, len)) {
125      if (modes[m].name[len] == '\0')
126	return modes[m].mode;
127      if (got != -1)
128        return 0;
129      got = m;
130    }
131
132  return got == -1 ? 0 : modes[got].mode;
133}
134
135struct in_addr
136GetIpAddr(const char *cp)
137{
138  struct in_addr ipaddr;
139
140  if (!strcasecmp(cp, "default"))
141    ipaddr.s_addr = INADDR_ANY;
142  else if (inet_aton(cp, &ipaddr) == 0) {
143    const char *ptr;
144
145    /* Any illegal characters ? */
146    for (ptr = cp; *ptr != '\0'; ptr++)
147      if (!isalnum(*ptr) && strchr("-.", *ptr) == NULL)
148        break;
149
150    if (*ptr == '\0') {
151      struct hostent *hp;
152
153      hp = gethostbyname(cp);
154      if (hp && hp->h_addrtype == AF_INET)
155        memcpy(&ipaddr, hp->h_addr, hp->h_length);
156      else
157        ipaddr.s_addr = INADDR_NONE;
158    } else
159      ipaddr.s_addr = INADDR_NONE;
160  }
161
162  return ipaddr;
163}
164
165static const struct speeds {
166  int nspeed;
167  speed_t speed;
168} speeds[] = {
169#ifdef B50
170  { 50, B50, },
171#endif
172#ifdef B75
173  { 75, B75, },
174#endif
175#ifdef B110
176  { 110, B110, },
177#endif
178#ifdef B134
179  { 134, B134, },
180#endif
181#ifdef B150
182  { 150, B150, },
183#endif
184#ifdef B200
185  { 200, B200, },
186#endif
187#ifdef B300
188  { 300, B300, },
189#endif
190#ifdef B600
191  { 600, B600, },
192#endif
193#ifdef B1200
194  { 1200, B1200, },
195#endif
196#ifdef B1800
197  { 1800, B1800, },
198#endif
199#ifdef B2400
200  { 2400, B2400, },
201#endif
202#ifdef B4800
203  { 4800, B4800, },
204#endif
205#ifdef B9600
206  { 9600, B9600, },
207#endif
208#ifdef B19200
209  { 19200, B19200, },
210#endif
211#ifdef B38400
212  { 38400, B38400, },
213#endif
214#ifndef _POSIX_SOURCE
215#ifdef B7200
216  { 7200, B7200, },
217#endif
218#ifdef B14400
219  { 14400, B14400, },
220#endif
221#ifdef B28800
222  { 28800, B28800, },
223#endif
224#ifdef B57600
225  { 57600, B57600, },
226#endif
227#ifdef B76800
228  { 76800, B76800, },
229#endif
230#ifdef B115200
231  { 115200, B115200, },
232#endif
233#ifdef B230400
234  { 230400, B230400, },
235#endif
236#ifdef EXTA
237  { 19200, EXTA, },
238#endif
239#ifdef EXTB
240  { 38400, EXTB, },
241#endif
242#endif				/* _POSIX_SOURCE */
243  { 0, 0 }
244};
245
246int
247SpeedToInt(speed_t speed)
248{
249  const struct speeds *sp;
250
251  for (sp = speeds; sp->nspeed; sp++) {
252    if (sp->speed == speed) {
253      return sp->nspeed;
254    }
255  }
256  return 0;
257}
258
259speed_t
260IntToSpeed(int nspeed)
261{
262  const struct speeds *sp;
263
264  for (sp = speeds; sp->nspeed; sp++) {
265    if (sp->nspeed == nspeed) {
266      return sp->speed;
267    }
268  }
269  return B0;
270}
271
272char *
273findblank(char *p, int flags)
274{
275  int instring;
276
277  instring = 0;
278  while (*p) {
279    if (*p == '\\') {
280      if (flags & PARSE_REDUCE) {
281        memmove(p, p + 1, strlen(p));
282        if (!*p)
283          break;
284      } else
285        p++;
286    } else if (*p == '"') {
287      memmove(p, p + 1, strlen(p));
288      instring = !instring;
289      continue;
290    } else if (!instring && (issep(*p) ||
291                             (*p == '#' && !(flags & PARSE_NOHASH))))
292      return p;
293    p++;
294  }
295
296  return instring ? NULL : p;
297}
298
299int
300MakeArgs(char *script, char **pvect, int maxargs, int flags)
301{
302  int nargs;
303
304  nargs = 0;
305  while (*script) {
306    script += strspn(script, " \t");
307    if (*script == '#' && flags & PARSE_NOHASH) {
308      *script = '\0';
309      break;
310    }
311    if (*script) {
312      if (nargs >= maxargs - 1)
313        break;
314      *pvect++ = script;
315      nargs++;
316      script = findblank(script, flags);
317      if (script == NULL)
318        return -1;
319      else if (!(flags & PARSE_NOHASH) && *script == '#') {
320        *script = '\0';
321        nargs--;
322      } else if (*script)
323        *script++ = '\0';
324    }
325  }
326  *pvect = NULL;
327  return nargs;
328}
329
330const char *
331NumStr(long val, char *buf, size_t sz)
332{
333  static char result[23];		/* handles 64 bit numbers */
334
335  if (buf == NULL || sz == 0) {
336    buf = result;
337    sz = sizeof result;
338  }
339  snprintf(buf, sz, "<%ld>", val);
340  return buf;
341}
342
343const char *
344HexStr(long val, char *buf, size_t sz)
345{
346  static char result[21];		/* handles 64 bit numbers */
347
348  if (buf == NULL || sz == 0) {
349    buf = result;
350    sz = sizeof result;
351  }
352  snprintf(buf, sz, "<0x%lx>", val);
353  return buf;
354}
355
356const char *
357ex_desc(int ex)
358{
359  static char num[12];		/* Used immediately if returned */
360  static const char * const desc[] = {
361    "normal", "start", "sock", "modem", "dial", "dead", "done",
362    "reboot", "errdead", "hangup", "term", "nodial", "nologin",
363    "redial", "reconnect"
364  };
365
366  if (ex >= 0 && ex < sizeof desc / sizeof *desc)
367    return desc[ex];
368  snprintf(num, sizeof num, "%d", ex);
369  return num;
370}
371
372void
373SetTitle(const char *title)
374{
375  if (title == NULL)
376    setproctitle(NULL);
377  else if (title[0] == '-' && title[1] != '\0')
378    setproctitle("-%s", title + 1);
379  else
380    setproctitle("%s", title);
381}
382