256 lines
6.2 KiB
C
256 lines
6.2 KiB
C
/*
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* Copyright (c) 1997 - 2002 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "der_locl.h"
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#include <com_err.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <getarg.h>
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#include <err.h>
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RCSID("$Id: asn1_print.c,v 1.11 2002/08/29 20:45:35 assar Exp $");
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const char *class_names[] = {
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"UNIV", /* 0 */
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"APPL", /* 1 */
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"CONTEXT", /* 2 */
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"PRIVATE" /* 3 */
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};
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const char *type_names[] = {
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"PRIM", /* 0 */
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"CONS" /* 1 */
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};
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const char *tag_names[] = {
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NULL, /* 0 */
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NULL, /* 1 */
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"Integer", /* 2 */
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"BitString", /* 3 */
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"OctetString", /* 4 */
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"Null", /* 5 */
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"ObjectID", /* 6 */
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NULL, /* 7 */
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NULL, /* 8 */
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NULL, /* 9 */
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NULL, /* 10 */
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NULL, /* 11 */
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NULL, /* 12 */
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NULL, /* 13 */
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NULL, /* 14 */
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NULL, /* 15 */
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"Sequence", /* 16 */
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"Set", /* 17 */
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NULL, /* 18 */
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"PrintableString", /* 19 */
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NULL, /* 20 */
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NULL, /* 21 */
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"IA5String", /* 22 */
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"UTCTime", /* 23 */
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"GeneralizedTime", /* 24 */
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NULL, /* 25 */
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"VisibleString", /* 26 */
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"GeneralString" /* 27 */
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};
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static int
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loop (unsigned char *buf, size_t len, int indent)
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{
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while (len > 0) {
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int ret;
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Der_class class;
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Der_type type;
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int tag;
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size_t sz;
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size_t length;
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int i;
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ret = der_get_tag (buf, len, &class, &type, &tag, &sz);
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if (ret)
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errx (1, "der_get_tag: %s", error_message (ret));
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if (sz > len)
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errx (1, "unreasonable length (%u) > %u",
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(unsigned)sz, (unsigned)len);
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buf += sz;
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len -= sz;
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for (i = 0; i < indent; ++i)
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printf (" ");
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printf ("%s %s ", class_names[class], type_names[type]);
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if (tag_names[tag])
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printf ("%s = ", tag_names[tag]);
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else
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printf ("tag %d = ", tag);
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ret = der_get_length (buf, len, &length, &sz);
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if (ret)
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errx (1, "der_get_tag: %s", error_message (ret));
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buf += sz;
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len -= sz;
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if (class == CONTEXT) {
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printf ("[%d]\n", tag);
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loop (buf, length, indent);
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} else if (class == UNIV) {
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switch (tag) {
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case UT_Sequence :
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printf ("{\n");
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loop (buf, length, indent + 2);
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for (i = 0; i < indent; ++i)
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printf (" ");
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printf ("}\n");
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break;
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case UT_Integer : {
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int val;
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ret = der_get_int (buf, length, &val, NULL);
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if (ret)
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errx (1, "der_get_int: %s", error_message (ret));
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printf ("integer %d\n", val);
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break;
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}
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case UT_OctetString : {
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octet_string str;
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int i;
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unsigned char *uc;
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ret = der_get_octet_string (buf, length, &str, NULL);
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if (ret)
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errx (1, "der_get_octet_string: %s", error_message (ret));
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printf ("(length %lu), ", (unsigned long)length);
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uc = (unsigned char *)str.data;
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for (i = 0; i < 16; ++i)
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printf ("%02x", uc[i]);
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printf ("\n");
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free (str.data);
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break;
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}
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case UT_GeneralizedTime :
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case UT_GeneralString : {
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general_string str;
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ret = der_get_general_string (buf, length, &str, NULL);
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if (ret)
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errx (1, "der_get_general_string: %s",
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error_message (ret));
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printf ("\"%s\"\n", str);
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free (str);
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break;
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}
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case UT_OID: {
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oid o;
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int i;
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ret = der_get_oid(buf, length, &o, NULL);
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if (ret)
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errx (1, "der_get_oid: %s", error_message (ret));
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for (i = 0; i < o.length ; i++)
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printf("%d%s", o.components[i],
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i < o.length - 1 ? "." : "");
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printf("\n");
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free_oid(&o);
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break;
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}
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default :
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printf ("%lu bytes\n", (unsigned long)length);
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break;
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}
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}
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buf += length;
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len -= length;
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}
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return 0;
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}
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static int
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doit (const char *filename)
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{
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int fd = open (filename, O_RDONLY);
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struct stat sb;
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unsigned char *buf;
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size_t len;
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int ret;
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if(fd < 0)
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err (1, "opening %s for read", filename);
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if (fstat (fd, &sb) < 0)
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err (1, "stat %s", filename);
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len = sb.st_size;
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buf = malloc (len);
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if (buf == NULL)
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err (1, "malloc %u", (unsigned)len);
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if (read (fd, buf, len) != len)
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errx (1, "read failed");
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close (fd);
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ret = loop (buf, len, 0);
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free (buf);
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return ret;
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}
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static int version_flag;
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static int help_flag;
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struct getargs args[] = {
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{ "version", 0, arg_flag, &version_flag },
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{ "help", 0, arg_flag, &help_flag }
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};
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int num_args = sizeof(args) / sizeof(args[0]);
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static void
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usage(int code)
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{
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arg_printusage(args, num_args, NULL, "dump-file");
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exit(code);
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}
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int
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main(int argc, char **argv)
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{
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int optind = 0;
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setprogname (argv[0]);
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initialize_asn1_error_table ();
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if(getarg(args, num_args, argc, argv, &optind))
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usage(1);
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if(help_flag)
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usage(0);
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if(version_flag) {
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print_version(NULL);
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exit(0);
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}
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argv += optind;
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argc -= optind;
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if (argc != 1)
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usage (1);
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return doit (argv[0]);
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}
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