contrib/bind-9.2.4rc7/lib/dns/gen-win32.h

   1 /*
   2  * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1999-2001  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /*
  19  * Copyright (c) 1987, 1993, 1994
  20  *      The Regents of the University of California.  All rights reserved.
  21  *
  22  * Redistribution and use in source and binary forms, with or without
  23  * modification, are permitted provided that the following conditions
  24  * are met:
  25  * 1. Redistributions of source code must retain the above copyright
  26  *    notice, this list of conditions and the following disclaimer.
  27  * 2. Redistributions in binary form must reproduce the above copyright
  28  *    notice, this list of conditions and the following disclaimer in the
  29  *    documentation and/or other materials provided with the distribution.
  30  * 3. All advertising materials mentioning features or use of this software
  31  *    must display the following acknowledgement:
  32  *      This product includes software developed by the University of
  33  *      California, Berkeley and its contributors.
  34  * 4. Neither the name of the University nor the names of its contributors
  35  *    may be used to endorse or promote products derived from this software
  36  *    without specific prior written permission.
  37  *
  38  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  39  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  40  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  41  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  42  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  43  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  44  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  45  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  46  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  47  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  48  * SUCH DAMAGE.
  49  */
  50
  51 /* $Id: gen-win32.h,v 1.14.2.1 2004/03/09 06:11:02 marka Exp $ */
  52
  53 /*
  54  * Principal Authors: Computer Systems Research Group at UC Berkeley
  55  * Principal ISC caretaker: DCL
  56  */
  57
  58 /*
  59  * This file was adapted from the NetBSD project's source tree, RCS ID:
  60  *    NetBSD: getopt.c,v 1.15 1999/09/20 04:39:37 lukem Exp
  61  *
  62  * The primary change has been to rename items to the ISC namespace
  63  * and format in the ISC coding style.
  64  *
  65  * This file is responsible for defining two operations that are not
  66  * directly portable between Unix-like systems and Windows NT, option
  67  * parsing and directory scanning.  It is here because it was decided
  68  * that the "gen" build utility was not to depend on libisc.a, so
  69  * the functions delcared in isc/commandline.h and isc/dir.h could not
  70  * be used.
  71  *
  72  * The commandline stuff is pretty much a straight copy from the initial
  73  * isc/commandline.c.  The dir stuff was shrunk to fit the needs of gen.c.
  74  */
  75
  76 #ifndef DNS_GEN_WIN32_H
  77 #define DNS_GEN_WIN32_H 1
  78
  79 #include <stdio.h>
  80 #include <string.h>
  81 #include <windows.h>
  82
  83 #include <isc/boolean.h>
  84 #include <isc/lang.h>
  85
  86 int isc_commandline_index = 1;          /* Index into parent argv vector. */
  87 int isc_commandline_option;             /* Character checked for validity. */
  88
  89 char *isc_commandline_argument;         /* Argument associated with option. */
  90 char *isc_commandline_progname;         /* For printing error messages. */
  91
  92 isc_boolean_t isc_commandline_errprint = ISC_TRUE;/* Print error messages. */
  93 isc_boolean_t isc_commandline_reset = ISC_TRUE; /* Reset processing. */
  94
  95 #define BADOPT  '?'
  96 #define BADARG  ':'
  97 #define ENDOPT  ""
  98
  99 ISC_LANG_BEGINDECLS
 100
 101 /*
 102  * getopt --
 103  *      Parse argc/argv argument vector.
 104  */
 105 int
 106 isc_commandline_parse(int argc, char * const *argv, const char *options) {
 107         static char *place = ENDOPT;
 108         char *option;                   /* Index into *options of option. */
 109
 110         /*
 111          * Update scanning pointer, either because a reset was requested or
 112          * the previous argv was finished.
 113          */
 114         if (isc_commandline_reset || *place == '\0') {
 115                 isc_commandline_reset = ISC_FALSE;
 116
 117                 if (isc_commandline_progname == NULL)
 118                         isc_commandline_progname = argv[0];
 119
 120                 if (isc_commandline_index >= argc ||
 121                     *(place = argv[isc_commandline_index]) != '-') {
 122                         /*
 123                          * Index out of range or points to non-option.
 124                          */
 125                         place = ENDOPT;
 126                         return (-1);
 127                 }
 128
 129                 if (place[1] != '\0' && *++place == '-' && place[1] == '\0') {
 130                         /*
 131                          * Found '--' to signal end of options.  Advance
 132                          * index to next argv, the first non-option.
 133                          */
 134                         isc_commandline_index++;
 135                         place = ENDOPT;
 136                         return (-1);
 137                 }
 138         }
 139
 140         isc_commandline_option = *place++;
 141         option = strchr(options, isc_commandline_option);
 142
 143         /*
 144          * Ensure valid option has been passed as specified by options string.
 145          * '-:' is never a valid command line option because it could not
 146          * distinguish ':' from the argument specifier in the options string.
 147          */
 148         if (isc_commandline_option == ':' || option == NULL) {
 149                 if (*place == '\0')
 150                         isc_commandline_index++;
 151
 152                 if (isc_commandline_errprint && *options != ':')
 153                         fprintf(stderr, "%s: illegal option -- %c\n",
 154                                 isc_commandline_progname,
 155                                 isc_commandline_option);
 156
 157                 return (BADOPT);
 158         }
 159
 160         if (*++option != ':') {
 161                 /*
 162                  * Option does not take an argument.
 163                  */
 164                 isc_commandline_argument = NULL;
 165
 166                 /*
 167                  * Skip to next argv if at the end of the current argv.
 168                  */
 169                 if (*place == '\0')
 170                         ++isc_commandline_index;
 171
 172         } else {
 173                 /*
 174                  * Option needs an argument.
 175                  */
 176                 if (*place != '\0')
 177                         /*
 178                          * Option is in this argv, -D1 style.
 179                          */
 180                         isc_commandline_argument = place;
 181
 182                 else if (argc > ++isc_commandline_index)
 183                         /*
 184                          * Option is next argv, -D 1 style.
 185                          */
 186                         isc_commandline_argument = argv[isc_commandline_index];
 187
 188                 else {
 189                         /*
 190                          * Argument needed, but no more argv.
 191                          */
 192                         place = ENDOPT;
 193
 194                         /*
 195                          * Silent failure with "missing argument" return
 196                          * when ':' starts options string, per historical spec.
 197                          */
 198                         if (*options == ':')
 199                                 return (BADARG);
 200
 201                         if (isc_commandline_errprint)
 202                                 fprintf(stderr,
 203                                     "%s: option requires an argument -- %c\n",
 204                                     isc_commandline_progname,
 205                                     isc_commandline_option);
 206
 207                         return (BADOPT);
 208                 }
 209
 210                 place = ENDOPT;
 211
 212                 /*
 213                  * Point to argv that follows argument.
 214                  */
 215                 isc_commandline_index++;
 216         }
 217
 218         return (isc_commandline_option);
 219 }
 220
 221 typedef struct {
 222         HANDLE handle;
 223         WIN32_FIND_DATA find_data;
 224         isc_boolean_t first_file;
 225         char *filename;
 226 } isc_dir_t;
 227
 228 isc_boolean_t
 229 start_directory(const char *path, isc_dir_t *dir) {
 230         char pattern[_MAX_PATH], *p;
 231
 232         /*
 233          * Need space for slash-splat and final NUL.
 234          */
 235         if (strlen(path) + 3 > sizeof(pattern))
 236                 return (ISC_FALSE);
 237
 238         strcpy(pattern, path);
 239
 240         /*
 241          * Append slash (if needed) and splat.
 242          */
 243         p = pattern + strlen(pattern);
 244         if (p != pattern  && p[-1] != '\\' && p[-1] != ':')
 245                 *p++ = '\\';
 246         *p++ = '*';
 247         *p++ = '\0';
 248
 249         dir->first_file = ISC_TRUE;
 250
 251         dir->handle = FindFirstFile(pattern, &dir->find_data);
 252
 253         if (dir->handle == INVALID_HANDLE_VALUE) {
 254                 dir->filename = NULL;
 255                 return (ISC_FALSE);
 256         } else {
 257                 dir->filename = dir->find_data.cFileName;
 258                 return (ISC_TRUE);
 259         }
 260 }
 261
 262 isc_boolean_t
 263 next_file(isc_dir_t *dir) {
 264         if (dir->first_file)
 265                 dir->first_file = ISC_FALSE;
 266
 267         else if (dir->handle != INVALID_HANDLE_VALUE) {
 268                 if (FindNextFile(dir->handle, &dir->find_data) == TRUE)
 269                         dir->filename = dir->find_data.cFileName;
 270                 else
 271                         dir->filename = NULL;
 272
 273         } else
 274                 dir->filename = NULL;
 275
 276         if (dir->filename != NULL)
 277                 return (ISC_TRUE);
 278         else
 279                 return (ISC_FALSE);
 280 }
 281
 282 void
 283 end_directory(isc_dir_t *dir) {
 284         if (dir->handle != INVALID_HANDLE_VALUE)
 285                 FindClose(dir->handle);
 286 }
 287
 288 ISC_LANG_ENDDECLS
 289
 290 #endif /* DNS_GEN_WIN32_H */