src/asn1Parser.c

   1 /*
   2  *      Copyright (C) 2006, 2007 Free Software Foundation
   3  *      Copyright (C) 2002 Fabio Fiorina
   4  *
   5  * This file is part of LIBTASN1.
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22
  23 /*****************************************************/
  24 /* File: asn1Parser.c                                */
  25 /* Description: program to parse a file with ASN1    */
  26 /*              definitions.                         */
  27 /*****************************************************/
  28
  29 #include <config.h>
  30
  31 #include <stdio.h>
  32 #include <string.h>
  33 #include <stdlib.h>
  34 #include <unistd.h>
  35 #include <getopt.h>
  36
  37 #include <libtasn1.h>
  38
  39 #include <progname.h>
  40 #include <version-etc.h>
  41
  42 static const char help_man[] =
  43   "Usage: asn1Parser [OPTION] FILE\n"
  44   "Read FILE with ASN.1 definitions and generate\n"
  45   "a C array that is used with libtasn1 functions.\n"
  46   "\n"
  47   "Mandatory arguments to long options are mandatory for short options too.\n"
  48   "  -c, --check           checks the syntax only\n"
  49   "  -o, --output FILE     output file\n"
  50   "  -n, --name NAME       array name\n"
  51   "  -h, --help            display this help and exit\n"
  52   "  -v, --version         output version information and exit.\n"
  53   "\n"
  54   "Report bugs to <" PACKAGE_BUGREPORT ">.";
  55
  56 /********************************************************/
  57 /* Function : main                                      */
  58 /* Description:                                         */
  59 /********************************************************/
  60 int
  61 main(int argc,char *argv[])
  62 {
  63   static struct option long_options[] =
  64   {
  65     {"help",    no_argument,       0, 'h'},
  66     {"version", no_argument,       0, 'v'},
  67     {"check",   no_argument,       0, 'c'},
  68     {"output",  required_argument, 0, 'o'},
  69     {"name",    required_argument, 0, 'n'},
  70     {0, 0, 0, 0}
  71   };
  72   int option_index = 0;
  73  int option_result;
  74  char *outputFileName=NULL;
  75  char *inputFileName=NULL;
  76  char *vectorName=NULL;
  77  int checkSyntaxOnly=0;
  78  ASN1_TYPE pointer=ASN1_TYPE_EMPTY;
  79  char errorDescription[MAX_ERROR_DESCRIPTION_SIZE];
  80  int parse_result=ASN1_SUCCESS;
  81
  82  set_program_name (argv[0]);
  83
  84  opterr=0; /* disable error messages from getopt */
  85
  86  while(1){
  87
  88    option_result=getopt_long(argc,argv,"hvco:n:",long_options,&option_index);
  89
  90    if(option_result == -1) break;
  91
  92    switch(option_result){
  93    case 0:
  94      printf("option %s",long_options[option_index].name);
  95      if(optarg) printf(" with arg %s",optarg);
  96      printf("\n");
  97      break;
  98    case 'h':  /* HELP */
  99      printf("%s\n",help_man);
 100
 101      if(outputFileName) free(outputFileName);
 102      if(vectorName) free(vectorName);
 103      exit(0);
 104      break;
 105    case 'v':  /* VERSION */
 106      version_etc (stdout, program_name, PACKAGE, VERSION,
 107                   "Fabio Fiorina", NULL);
 108      if(outputFileName) free(outputFileName);
 109      if(vectorName) free(vectorName);
 110      exit(0);
 111      break;
 112    case 'c':  /* CHECK SYNTAX */
 113      checkSyntaxOnly = 1;
 114      break;
 115    case 'o':  /* OUTPUT */
 116      outputFileName=(char *)malloc(strlen(optarg)+1);
 117      strcpy(outputFileName,optarg);
 118      break;
 119    case 'n':  /* VECTOR NAME */
 120      vectorName=(char *)malloc(strlen(optarg)+1);
 121      strcpy(vectorName,optarg);
 122      break;
 123    case '?':  /* UNKNOW OPTION */
 124      fprintf(stderr,"asn1Parser: option '%s' not recognized or without argument.\n\n",argv[optind-1]);
 125      printf("%s\n",help_man);
 126
 127      if(outputFileName) free(outputFileName);
 128      if(vectorName) free(vectorName);
 129      exit(1);
 130      break;
 131    default:
 132      fprintf(stderr,"asn1Parser: ?? getopt returned character code Ox%x ??\n",option_result);
 133    }
 134
 135  }
 136
 137  if(optind == argc){
 138    fprintf(stderr,"asn1Parser: input file name missing.\n\n");
 139    printf("%s\n",help_man);
 140
 141    if(outputFileName) free(outputFileName);
 142    if(vectorName) free(vectorName);
 143    exit(1);
 144  }
 145  else{
 146    inputFileName=(char *)malloc(strlen(argv[optind])+1);
 147    strcpy(inputFileName,argv[optind]);
 148  }
 149
 150  if(checkSyntaxOnly == 1){
 151    parse_result=asn1_parser2tree(inputFileName,&pointer,errorDescription);
 152    asn1_delete_structure(&pointer);
 153  }
 154  else /* C VECTOR CREATION */
 155    parse_result=asn1_parser2array(inputFileName,
 156                 outputFileName,vectorName,errorDescription);
 157
 158  switch(parse_result){
 159  case ASN1_SUCCESS:
 160    printf("Done.\n");
 161    break;
 162  case ASN1_FILE_NOT_FOUND:
 163    printf("asn1Parser: FILE %s NOT FOUND\n",inputFileName);
 164    break;
 165  case ASN1_SYNTAX_ERROR:
 166  case ASN1_IDENTIFIER_NOT_FOUND:
 167  case ASN1_NAME_TOO_LONG:
 168    printf("asn1Parser: %s\n",errorDescription);
 169    break;
 170  default:
 171    printf("libtasn1 ERROR: %s\n",libtasn1_strerror(parse_result));
 172  }
 173
 174
 175  free(inputFileName);
 176  if(outputFileName) free(outputFileName);
 177  if(vectorName) free(vectorName);
 178
 179  if(parse_result != ASN1_SUCCESS) exit(1);
 180  exit(0);
 181 }