The Tcpdump Group git mirrors - libpcap/blob - rpcapd/utils.c

   1 /*
   2  * Copyright (c) 1987, 1993, 1994
   3  *      The Regents of the University of California.  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  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 // getopt() is not present in Win32
  35
  36 #ifdef _WIN32
  37 #include <stdio.h>
  38 #include <string.h>                             // for getc()
  39
  40 int     opterr = 1,             /* if error message should be printed */
  41         optind = 1,             /* index into parent argv vector */
  42         optopt,                 /* character checked for validity */
  43         optreset;               /* reset getopt */
  44 char    *optarg;                /* argument associated with option */
  45
  46 #define BADCH   (int)'?'
  47 #define BADARG  (int)':'
  48 #define EMSG    ""
  49
  50 char *__progname = "rpcapd";
  51
  52 /*
  53  * getopt --
  54  *      Parse argc/argv argument vector.
  55  */
  56 int
  57 getopt(nargc, nargv, ostr)
  58         int nargc;
  59         char * const *nargv;
  60         const char *ostr;
  61 {
  62 // WIN32        extern char *__progname;
  63         static char *place = EMSG;              /* option letter processing */
  64         char *oli;                              /* option letter list index */
  65         int ret;
  66
  67         if (optreset || !*place) {              /* update scanning pointer */
  68                 optreset = 0;
  69                 if (optind >= nargc || *(place = nargv[optind]) != '-') {
  70                         place = EMSG;
  71                         return (-1);
  72                 }
  73                 if (place[1] && *++place == '-') {      /* found "--" */
  74                         ++optind;
  75                         place = EMSG;
  76                         return (-1);
  77                 }
  78         }                                       /* option letter okay? */
  79         if ((optopt = (int)*place++) == (int)':' ||
  80             !(oli = strchr(ostr, optopt))) {
  81                 /*
  82                  * if the user didn't specify '-' as an option,
  83                  * assume it means -1.
  84                  */
  85                 if (optopt == (int)'-')
  86                         return (-1);
  87                 if (!*place)
  88                         ++optind;
  89                 if (opterr && *ostr != ':' && optopt != BADCH)
  90                         (void)fprintf(stderr,
  91                             "%s: illegal option -- %c\n", __progname, optopt);
  92                 return (BADCH);
  93         }
  94         if (*++oli != ':') {                    /* don't need argument */
  95                 optarg = NULL;
  96                 if (!*place)
  97                         ++optind;
  98         }
  99         else {                                  /* need an argument */
 100                 if (*place)                     /* no white space */
 101                         optarg = place;
 102                 else if (nargc <= ++optind) {   /* no arg */
 103                         place = EMSG;
 104                         if (*ostr == ':')
 105                                 ret = BADARG;
 106                         else
 107                                 ret = BADCH;
 108                         if (opterr)
 109                                 (void)fprintf(stderr,
 110                                     "%s: option requires an argument -- %c\n",
 111                                     __progname, optopt);
 112                         return (ret);
 113                 }
 114                 else                            /* white space */
 115                         optarg = nargv[optind];
 116                 place = EMSG;
 117                 ++optind;
 118         }
 119         return (optopt);                        /* dump back option letter */
 120 }
 121
 122 #endif