crypto/dist/heimdal/lib/asn1/asn1_gen.c

   1 /*
   2  * Copyright (c) 2005 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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 #include "der_locl.h"
  35 #include <com_err.h>
  36 #include <sys/types.h>
  37 #include <sys/stat.h>
  38 #include <ctype.h>
  39 #include <getarg.h>
  40 #include <hex.h>
  41 #include <err.h>
  42
  43 __RCSID("$Heimdal: asn1_gen.c 16666 2006-01-30 15:06:03Z lha $"
  44         "$NetBSD$");
  45
  46 static int
  47 doit(const char *fn)
  48 {
  49     char buf[2048];
  50     char *fnout;
  51     const char *bname;
  52     unsigned long line = 0;
  53     FILE *f, *fout;
  54     size_t offset = 0;
  55
  56     f = fopen(fn, "r");
  57     if (f == NULL)
  58         err(1, "fopen");
  59
  60     bname = strrchr(fn, '/');
  61     if (bname)
  62         bname++;
  63     else
  64         bname = fn;
  65
  66     asprintf(&fnout, "%s.out", bname);
  67     if (fnout == NULL)
  68         errx(1, "malloc");
  69
  70     fout = fopen(fnout, "w");
  71     if (fout == NULL)
  72         err(1, "fopen: output file");
  73
  74     while (fgets(buf, sizeof(buf), f) != NULL) {
  75         char *ptr, *class, *type, *tag, *length, *data, *foo;
  76         int ret, l, c, ty, ta;
  77         unsigned char p[6], *pdata;
  78         size_t sz;
  79
  80         line++;
  81
  82         buf[strcspn(buf, "\r\n")] = '\0';
  83         if (buf[0] == '#' || buf[0] == '\0')
  84             continue;
  85
  86         ptr = buf;
  87         while (isspace((unsigned char)*ptr))
  88                ptr++;
  89
  90         class = strtok_r(ptr, " \t\n", &foo);
  91         if (class == NULL) errx(1, "class missing on line %lu", line);
  92         type = strtok_r(NULL, " \t\n", &foo);
  93         if (type == NULL) errx(1, "type missing on line %lu", line);
  94         tag = strtok_r(NULL, " \t\n", &foo);
  95         if (tag == NULL) errx(1, "tag missing on line %lu", line);
  96         length = strtok_r(NULL, " \t\n", &foo);
  97         if (length == NULL) errx(1, "length missing on line %lu", line);
  98         data = strtok_r(NULL, " \t\n", &foo);
  99
 100         c = der_get_class_num(class);
 101         if (c == -1) errx(1, "no valid class on line %lu", line);
 102         ty = der_get_type_num(type);
 103         if (ty == -1) errx(1, "no valid type on line %lu", line);
 104         ta = der_get_tag_num(tag);
 105         if (ta == -1)
 106             ta = atoi(tag);
 107
 108         l = atoi(length);
 109
 110         printf("line: %3lu offset: %3lu class: %d type: %d "
 111                "tag: %3d length: %3d %s\n",
 112                line, (unsigned long)offset, c, ty, ta, l,
 113                data ? "<have data>" : "<no data>");
 114
 115         ret = der_put_length_and_tag(p + sizeof(p) - 1, sizeof(p),
 116                                      l,
 117                                      c,
 118                                      ty,
 119                                      ta,
 120                                      &sz);
 121         if (ret)
 122             errx(1, "der_put_length_and_tag: %d", ret);
 123
 124         if (fwrite(p + sizeof(p) - sz , sz, 1, fout) != 1)
 125             err(1, "fwrite length/tag failed");
 126         offset += sz;
 127
 128         if (data) {
 129             size_t datalen;
 130
 131             datalen = strlen(data) / 2;
 132             pdata = emalloc(sz);
 133
 134             if (hex_decode(data, pdata, datalen) != datalen)
 135                 errx(1, "failed to decode data");
 136
 137             if (fwrite(pdata, datalen, 1, fout) != 1)
 138                 err(1, "fwrite data failed");
 139             offset += datalen;
 140
 141             free(pdata);
 142         }
 143     }
 144     printf("line: eof offset: %lu\n", (unsigned long)offset);
 145
 146     fclose(fout);
 147     fclose(f);
 148     return 0;
 149 }
 150
 151
 152 static int version_flag;
 153 static int help_flag;
 154 struct getargs args[] = {
 155     { "version", 0, arg_flag, &version_flag },
 156     { "help", 0, arg_flag, &help_flag }
 157 };
 158 int num_args = sizeof(args) / sizeof(args[0]);
 159
 160 static void
 161 usage(int code)
 162 {
 163     arg_printusage(args, num_args, NULL, "parse-file");
 164     exit(code);
 165 }
 166
 167 int
 168 main(int argc, char **argv)
 169 {
 170     int optidx = 0;
 171
 172     setprogname (argv[0]);
 173
 174     if(getarg(args, num_args, argc, argv, &optidx))
 175         usage(1);
 176     if(help_flag)
 177         usage(0);
 178     if(version_flag) {
 179         print_version(NULL);
 180         exit(0);
 181     }
 182     argv += optidx;
 183     argc -= optidx;
 184     if (argc != 1)
 185         usage (1);
 186
 187     return doit (argv[0]);
 188 }