1 files changed, 304 insertions, 0 deletions
diff --git a/lib/asn1/asn1_print.c b/lib/asn1/asn1_print.c
new file mode 100644
index 0000000..e00bf10
--- /dev/null
+++ b/lib/asn1/asn1_print.c
@@ -0,0 +1,304 @@
+/*
+ * Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden). 
+ * All rights reserved. 
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions 
+ * are met: 
+ *
+ * 1. Redistributions of source code must retain the above copyright 
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright 
+ *    notice, this list of conditions and the following disclaimer in the 
+ *    documentation and/or other materials provided with the distribution. 
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors 
+ *    may be used to endorse or promote products derived from this software 
+ *    without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
+ * SUCH DAMAGE. 
+ */
+
+#include "der_locl.h"
+#include <com_err.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <getarg.h>
+#include <err.h>
+#include <der.h>
+
+RCSID("$Id: asn1_print.c 19539 2006-12-28 17:15:05Z lha $");
+
+static int indent_flag = 1;
+
+static unsigned long indefinite_form_loop;
+static unsigned long indefinite_form_loop_max = 10000;
+
+static size_t
+loop (unsigned char *buf, size_t len, int indent)
+{
+    unsigned char *start_buf = buf;
+
+    while (len > 0) {
+	int ret;
+	Der_class class;
+	Der_type type;
+	unsigned int tag;
+	size_t sz;
+	size_t length;
+	size_t loop_length = 0;
+	int end_tag = 0;
+	const char *tagname;
+
+	ret = der_get_tag (buf, len, &class, &type, &tag, &sz);
+	if (ret)
+	    errx (1, "der_get_tag: %s", error_message (ret));
+	if (sz > len)
+	    errx (1, "unreasonable length (%u) > %u",
+		  (unsigned)sz, (unsigned)len);
+	buf += sz;
+	len -= sz;
+	if (indent_flag) {
+	    int i;
+	    for (i = 0; i < indent; ++i)
+		printf (" ");
+	}
+	printf ("%s %s ", der_get_class_name(class), der_get_type_name(type));
+	tagname = der_get_tag_name(tag);
+	if (class == ASN1_C_UNIV && tagname != NULL)
+	    printf ("%s = ", tagname);
+	else
+	    printf ("tag %d = ", tag);
+	ret = der_get_length (buf, len, &length, &sz);
+	if (ret)
+	    errx (1, "der_get_tag: %s", error_message (ret));
+	if (sz > len)
+	    errx (1, "unreasonable tag length (%u) > %u",
+		  (unsigned)sz, (unsigned)len);
+	buf += sz;
+	len -= sz;
+	if (length == ASN1_INDEFINITE) {
+	    if ((class == ASN1_C_UNIV && type == PRIM && tag == UT_OctetString) ||
+		(class == ASN1_C_CONTEXT && type == CONS) ||
+		(class == ASN1_C_UNIV && type == CONS && tag == UT_Sequence) ||
+		(class == ASN1_C_UNIV && type == CONS && tag == UT_Set)) {
+		printf("*INDEFINITE FORM*");
+	    } else {
+		fflush(stdout);
+		errx(1, "indef form used on unsupported object");
+	    }
+	    end_tag = 1;
+	    if (indefinite_form_loop > indefinite_form_loop_max)
+		errx(1, "indefinite form used recursively more then %lu "
+		     "times, aborting", indefinite_form_loop_max);
+	    indefinite_form_loop++;
+	    length = len;
+	} else if (length > len) {
+	    printf("\n");
+	    fflush(stdout);
+	    errx (1, "unreasonable inner length (%u) > %u",
+		  (unsigned)length, (unsigned)len);
+	}
+	if (class == ASN1_C_CONTEXT || class == ASN1_C_APPL) {
+	    printf ("%lu bytes [%u]", (unsigned long)length, tag);
+	    if (type == CONS) {
+		printf("\n");
+		loop_length = loop (buf, length, indent + 2);
+	    } else {
+		printf(" IMPLICIT content\n");
+	    }
+	} else if (class == ASN1_C_UNIV) {
+	    switch (tag) {
+	    case UT_EndOfContent:
+		printf (" INDEFINITE length was %lu\n",
+			(unsigned long)(buf - start_buf));
+		break;
+	    case UT_Set :
+	    case UT_Sequence :
+		printf ("%lu bytes {\n", (unsigned long)length);
+		loop_length = loop (buf, length, indent + 2);
+		if (indent_flag) {
+		    int i;
+		    for (i = 0; i < indent; ++i)
+			printf (" ");
+		    printf ("}\n");
+		} else
+		    printf ("} indent = %d\n", indent / 2);
+		break;
+	    case UT_Integer : {
+		int val;
+
+		if (length <= sizeof(val)) {
+		    ret = der_get_integer (buf, length, &val, NULL);
+		    if (ret)
+			errx (1, "der_get_integer: %s", error_message (ret));
+		    printf ("integer %d\n", val);
+		} else {
+		    heim_integer vali;
+		    char *p;
+
+		    ret = der_get_heim_integer(buf, length, &vali, NULL);
+		    if (ret)
+			errx (1, "der_get_heim_integer: %s", 
+			      error_message (ret));
+		    ret = der_print_hex_heim_integer(&vali, &p);
+		    if (ret)
+			errx (1, "der_print_hex_heim_integer: %s", 
+			      error_message (ret));
+		    printf ("BIG NUM integer: length %lu %s\n", 
+			    (unsigned long)length, p);
+		    free(p);
+		}
+		break;
+	    }
+	    case UT_OctetString : {
+		heim_octet_string str;
+		int i;
+		unsigned char *uc;
+
+		ret = der_get_octet_string (buf, length, &str, NULL);
+		if (ret)
+		    errx (1, "der_get_octet_string: %s", error_message (ret));
+		printf ("(length %lu), ", (unsigned long)length);
+		uc = (unsigned char *)str.data;
+		for (i = 0; i < min(16,length); ++i)
+		    printf ("%02x", uc[i]);
+		printf ("\n");
+		free (str.data);
+		break;
+	    }
+	    case UT_GeneralizedTime :
+	    case UT_GeneralString :
+	    case UT_PrintableString :
+	    case UT_VisibleString : {
+		heim_general_string str;
+
+		ret = der_get_general_string (buf, length, &str, NULL);
+		if (ret)
+		    errx (1, "der_get_general_string: %s",
+			  error_message (ret));
+		printf ("\"%s\"\n", str);
+		free (str);
+		break;
+	    }
+	    case UT_OID: {
+		heim_oid o;
+		char *p;
+
+		ret = der_get_oid(buf, length, &o, NULL);
+		if (ret)
+		    errx (1, "der_get_oid: %s", error_message (ret));
+		ret = der_print_heim_oid(&o, '.', &p);
+		der_free_oid(&o);
+		if (ret)
+		    errx (1, "der_print_heim_oid: %s", error_message (ret));
+		printf("%s\n", p);
+		free(p);
+
+		break;
+	    }
+	    case UT_Enumerated: {
+		int num;
+
+		ret = der_get_integer (buf, length, &num, NULL);
+		if (ret)
+		    errx (1, "der_get_enum: %s", error_message (ret));
+		
+		printf("%u\n", num);
+		break;
+	    }
+	    default :
+		printf ("%lu bytes\n", (unsigned long)length);
+		break;
+	    }
+	}
+	if (end_tag) {
+	    if (loop_length == 0)
+		errx(1, "zero length INDEFINITE data ? indent = %d\n", 
+		     indent / 2);
+	    if (loop_length < length)
+		length = loop_length;
+	    if (indefinite_form_loop == 0)
+		errx(1, "internal error in indefinite form loop detection");
+	    indefinite_form_loop--;
+	} else if (loop_length)
+	    errx(1, "internal error for INDEFINITE form");
+	buf += length;
+	len -= length;
+    }
+    return 0;
+}
+
+static int
+doit (const char *filename)
+{
+    int fd = open (filename, O_RDONLY);
+    struct stat sb;
+    unsigned char *buf;
+    size_t len;
+    int ret;
+
+    if(fd < 0)
+	err (1, "opening %s for read", filename);
+    if (fstat (fd, &sb) < 0)
+	err (1, "stat %s", filename);
+    len = sb.st_size;
+    buf = emalloc (len);
+    if (read (fd, buf, len) != len)
+	errx (1, "read failed");
+    close (fd);
+    ret = loop (buf, len, 0);
+    free (buf);
+    return 0;
+}
+
+
+static int version_flag;
+static int help_flag;
+struct getargs args[] = {
+    { "indent", 0, arg_negative_flag, &indent_flag },
+    { "version", 0, arg_flag, &version_flag },
+    { "help", 0, arg_flag, &help_flag }
+};
+int num_args = sizeof(args) / sizeof(args[0]);
+
+static void
+usage(int code)
+{
+    arg_printusage(args, num_args, NULL, "dump-file");
+    exit(code);
+}
+
+int
+main(int argc, char **argv)
+{
+    int optidx = 0;
+
+    setprogname (argv[0]);
+    initialize_asn1_error_table ();
+    if(getarg(args, num_args, argc, argv, &optidx))
+	usage(1);
+    if(help_flag)
+	usage(0);
+    if(version_flag) {
+	print_version(NULL);
+	exit(0);
+    }
+    argv += optidx;
+    argc -= optidx;
+    if (argc != 1)
+	usage (1);
+    return doit (argv[0]);
+}