src/asn1Parser.c

   1 /*
   2  *      Copyright (C) 2002 Fabio Fiorina
   3  *
   4  * This file is part of LIBTASN1.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19  * 02110-1301, USA
  20  */
  21
  22
  23 /*****************************************************/
  24 /* File: asn1Parser.c                                */
  25 /* Description: program to parse a file with ASN1    */
  26 /*              definitions.                         */
  27 /*****************************************************/
  28
  29 #include <stdio.h>
  30 #include <string.h>
  31 #include <libtasn1.h>
  32 #include <stdlib.h>
  33 #include <config.h>
  34
  35 #ifdef HAVE_UNISTD_H
  36 #include <unistd.h>
  37 #endif
  38
  39 #ifdef HAVE_GETOPT_H
  40   #include <getopt.h>
  41 #endif
  42
  43 char version_man[] = "asn1Parser (GNU libasn1) " VERSION;
  44
  45 char help_man[] = "asn1Parser reads files with ASN1 definitions and\n"
  46                   "generates a C array to use with libtasn1 functions.\n"
  47                   "\n"
  48                   "Usage: asn1Parser [options] file\n"
  49                   "\n"
  50 #ifdef HAVE_GETOPT_LONG
  51                   "Operation modes:\n"
  52                   "  -h, --help    shows this message and exit\n"
  53                   "  -v, --version shows version information and exit.\n"
  54                   "  -c, --check   checks the syntax only.\n"
  55                   "\n"
  56                   "Output:\n"
  57                   "  -o <file>, --output <file>  output file\n"
  58                   "  -n <name>, --name <name>    array name\n";
  59 #else
  60                   "Operation modes:\n"
  61                   "  -h    shows this message and exit\n"
  62                   "  -v    shows version information and exit.\n"
  63                   "  -c    checks the syntax only.\n"
  64                   "\n"
  65                   "Output:\n"
  66                   "  -o <file>  output file\n"
  67                   "  -n <name>  array name\n";
  68 #endif
  69
  70 /********************************************************/
  71 /* Function : main                                      */
  72 /* Description:                                         */
  73 /********************************************************/
  74 int
  75 main(int argc,char *argv[])
  76 {
  77
  78 #ifdef HAVE_GETOPT_LONG
  79   static struct option long_options[] =
  80   {
  81     {"help",    no_argument,       0, 'h'},
  82     {"version", no_argument,       0, 'v'},
  83     {"check",   no_argument,       0, 'c'},
  84     {"output",  required_argument, 0, 'o'},
  85     {"name",    required_argument, 0, 'n'},
  86     {0, 0, 0, 0}
  87   };
  88   int option_index = 0;
  89 #endif
  90
  91  int option_result;
  92  char *outputFileName=NULL;
  93  char *inputFileName=NULL;
  94  char *vectorName=NULL;
  95  int checkSyntaxOnly=0;
  96  ASN1_TYPE pointer=ASN1_TYPE_EMPTY;
  97  char errorDescription[MAX_ERROR_DESCRIPTION_SIZE];
  98  int parse_result=ASN1_SUCCESS;
  99
 100  opterr=0; /* disable error messages from getopt */
 101
 102  printf("\n");
 103
 104  while(1){
 105
 106 #ifdef HAVE_GETOPT_LONG
 107    option_result=getopt_long(argc,argv,"hvco:n:",long_options,&option_index);
 108 #else
 109    option_result=getopt(argc,argv,"hvco:n:");
 110 #endif
 111
 112    if(option_result == -1) break;
 113
 114    switch(option_result){
 115    case 0:
 116 #ifdef HAVE_GETOPT_LONG
 117      printf("option %s",long_options[option_index].name);
 118      if(optarg) printf(" with arg %s",optarg);
 119      printf("\n");
 120 #endif
 121      break;
 122    case 'h':  /* HELP */
 123      printf("%s\n",help_man);
 124
 125      if(outputFileName) free(outputFileName);
 126      if(vectorName) free(vectorName);
 127      exit(0);
 128      break;
 129    case 'v':  /* VERSION */
 130      printf("%s\n",version_man);
 131
 132      if(outputFileName) free(outputFileName);
 133      if(vectorName) free(vectorName);
 134      exit(0);
 135      break;
 136    case 'c':  /* CHECK SYNTAX */
 137      checkSyntaxOnly = 1;
 138      break;
 139    case 'o':  /* OUTPUT */
 140      outputFileName=(char *)malloc(strlen(optarg)+1);
 141      strcpy(outputFileName,optarg);
 142      break;
 143    case 'n':  /* VECTOR NAME */
 144      vectorName=(char *)malloc(strlen(optarg)+1);
 145      strcpy(vectorName,optarg);
 146      break;
 147    case '?':  /* UNKNOW OPTION */
 148      fprintf(stderr,"asn1Parser: option '%s' not recognized or without argument.\n\n",argv[optind-1]);
 149      printf("%s\n",help_man);
 150
 151      if(outputFileName) free(outputFileName);
 152      if(vectorName) free(vectorName);
 153      exit(1);
 154      break;
 155    default:
 156      fprintf(stderr,"asn1Parser: ?? getopt returned character code Ox%x ??\n",option_result);
 157    }
 158
 159  }
 160
 161  if(optind == argc){
 162    fprintf(stderr,"asn1Parser: input file name missing.\n\n");
 163    printf("%s\n",help_man);
 164
 165    if(outputFileName) free(outputFileName);
 166    if(vectorName) free(vectorName);
 167    exit(1);
 168  }
 169  else{
 170    inputFileName=(char *)malloc(strlen(argv[optind])+1);
 171    strcpy(inputFileName,argv[optind]);
 172  }
 173
 174  if(checkSyntaxOnly == 1){
 175    parse_result=asn1_parser2tree(inputFileName,&pointer,errorDescription);
 176    asn1_delete_structure(&pointer);
 177  }
 178  else /* C VECTOR CREATION */
 179    parse_result=asn1_parser2array(inputFileName,
 180                 outputFileName,vectorName,errorDescription);
 181
 182  switch(parse_result){
 183  case ASN1_SUCCESS:
 184    printf("Done.\n");
 185    break;
 186  case ASN1_FILE_NOT_FOUND:
 187    printf("asn1Parser: FILE %s NOT FOUND\n",inputFileName);
 188    break;
 189  case ASN1_SYNTAX_ERROR:
 190  case ASN1_IDENTIFIER_NOT_FOUND:
 191  case ASN1_NAME_TOO_LONG:
 192    printf("asn1Parser: %s\n",errorDescription);
 193    break;
 194  default:
 195    printf("libasn1 ERROR: %s\n",libtasn1_strerror(parse_result));
 196  }
 197
 198
 199  free(inputFileName);
 200  if(outputFileName) free(outputFileName);
 201  if(vectorName) free(vectorName);
 202
 203  if(parse_result != ASN1_SUCCESS) exit(1);
 204  exit(0);
 205 }
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