summaryrefslogtreecommitdiffstats
path: root/openssl/crypto/asn1/asn1_par.c
diff options
context:
space:
mode:
Diffstat (limited to 'openssl/crypto/asn1/asn1_par.c')
-rw-r--r--openssl/crypto/asn1/asn1_par.c424
1 files changed, 424 insertions, 0 deletions
diff --git a/openssl/crypto/asn1/asn1_par.c b/openssl/crypto/asn1/asn1_par.c
new file mode 100644
index 0000000..e85e339
--- /dev/null
+++ b/openssl/crypto/asn1/asn1_par.c
@@ -0,0 +1,424 @@
+/* crypto/asn1/asn1_par.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * 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 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. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 AUTHOR 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.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/buffer.h>
+#include <openssl/objects.h>
+#include <openssl/asn1.h>
+
+#ifndef ASN1_PARSE_MAXDEPTH
+#define ASN1_PARSE_MAXDEPTH 128
+#endif
+
+static int asn1_print_info(BIO *bp, int tag, int xclass, int constructed,
+ int indent);
+static int asn1_parse2(BIO *bp, const unsigned char **pp, long length,
+ int offset, int depth, int indent, int dump);
+static int asn1_print_info(BIO *bp, int tag, int xclass, int constructed,
+ int indent)
+{
+ static const char fmt[] = "%-18s";
+ char str[128];
+ const char *p;
+
+ if (constructed & V_ASN1_CONSTRUCTED)
+ p = "cons: ";
+ else
+ p = "prim: ";
+ if (BIO_write(bp, p, 6) < 6)
+ goto err;
+ BIO_indent(bp, indent, 128);
+
+ p = str;
+ if ((xclass & V_ASN1_PRIVATE) == V_ASN1_PRIVATE)
+ BIO_snprintf(str, sizeof str, "priv [ %d ] ", tag);
+ else if ((xclass & V_ASN1_CONTEXT_SPECIFIC) == V_ASN1_CONTEXT_SPECIFIC)
+ BIO_snprintf(str, sizeof str, "cont [ %d ]", tag);
+ else if ((xclass & V_ASN1_APPLICATION) == V_ASN1_APPLICATION)
+ BIO_snprintf(str, sizeof str, "appl [ %d ]", tag);
+ else if (tag > 30)
+ BIO_snprintf(str, sizeof str, "<ASN1 %d>", tag);
+ else
+ p = ASN1_tag2str(tag);
+
+ if (BIO_printf(bp, fmt, p) <= 0)
+ goto err;
+ return (1);
+ err:
+ return (0);
+}
+
+int ASN1_parse(BIO *bp, const unsigned char *pp, long len, int indent)
+{
+ return (asn1_parse2(bp, &pp, len, 0, 0, indent, 0));
+}
+
+int ASN1_parse_dump(BIO *bp, const unsigned char *pp, long len, int indent,
+ int dump)
+{
+ return (asn1_parse2(bp, &pp, len, 0, 0, indent, dump));
+}
+
+static int asn1_parse2(BIO *bp, const unsigned char **pp, long length,
+ int offset, int depth, int indent, int dump)
+{
+ const unsigned char *p, *ep, *tot, *op, *opp;
+ long len;
+ int tag, xclass, ret = 0;
+ int nl, hl, j, r;
+ ASN1_OBJECT *o = NULL;
+ ASN1_OCTET_STRING *os = NULL;
+ /* ASN1_BMPSTRING *bmp=NULL; */
+ int dump_indent;
+
+#if 0
+ dump_indent = indent;
+#else
+ dump_indent = 6; /* Because we know BIO_dump_indent() */
+#endif
+
+ if (depth > ASN1_PARSE_MAXDEPTH) {
+ BIO_puts(bp, "BAD RECURSION DEPTH\n");
+ return 0;
+ }
+
+ p = *pp;
+ tot = p + length;
+ op = p - 1;
+ while ((p < tot) && (op < p)) {
+ op = p;
+ j = ASN1_get_object(&p, &len, &tag, &xclass, length);
+#ifdef LINT
+ j = j;
+#endif
+ if (j & 0x80) {
+ if (BIO_write(bp, "Error in encoding\n", 18) <= 0)
+ goto end;
+ ret = 0;
+ goto end;
+ }
+ hl = (p - op);
+ length -= hl;
+ /*
+ * if j == 0x21 it is a constructed indefinite length object
+ */
+ if (BIO_printf(bp, "%5ld:", (long)offset + (long)(op - *pp))
+ <= 0)
+ goto end;
+
+ if (j != (V_ASN1_CONSTRUCTED | 1)) {
+ if (BIO_printf(bp, "d=%-2d hl=%ld l=%4ld ",
+ depth, (long)hl, len) <= 0)
+ goto end;
+ } else {
+ if (BIO_printf(bp, "d=%-2d hl=%ld l=inf ", depth, (long)hl) <= 0)
+ goto end;
+ }
+ if (!asn1_print_info(bp, tag, xclass, j, (indent) ? depth : 0))
+ goto end;
+ if (j & V_ASN1_CONSTRUCTED) {
+ const unsigned char *sp;
+
+ ep = p + len;
+ if (BIO_write(bp, "\n", 1) <= 0)
+ goto end;
+ if (len > length) {
+ BIO_printf(bp, "length is greater than %ld\n", length);
+ ret = 0;
+ goto end;
+ }
+ if ((j == 0x21) && (len == 0)) {
+ sp = p;
+ for (;;) {
+ r = asn1_parse2(bp, &p, (long)(tot - p),
+ offset + (p - *pp), depth + 1,
+ indent, dump);
+ if (r == 0) {
+ ret = 0;
+ goto end;
+ }
+ if ((r == 2) || (p >= tot)) {
+ len = p - sp;
+ break;
+ }
+ }
+ } else {
+ long tmp = len;
+
+ while (p < ep) {
+ sp = p;
+ r = asn1_parse2(bp, &p, tmp, offset + (p - *pp), depth + 1,
+ indent, dump);
+ if (r == 0) {
+ ret = 0;
+ goto end;
+ }
+ tmp -= p - sp;
+ }
+ }
+ } else if (xclass != 0) {
+ p += len;
+ if (BIO_write(bp, "\n", 1) <= 0)
+ goto end;
+ } else {
+ nl = 0;
+ if ((tag == V_ASN1_PRINTABLESTRING) ||
+ (tag == V_ASN1_T61STRING) ||
+ (tag == V_ASN1_IA5STRING) ||
+ (tag == V_ASN1_VISIBLESTRING) ||
+ (tag == V_ASN1_NUMERICSTRING) ||
+ (tag == V_ASN1_UTF8STRING) ||
+ (tag == V_ASN1_UTCTIME) || (tag == V_ASN1_GENERALIZEDTIME)) {
+ if (BIO_write(bp, ":", 1) <= 0)
+ goto end;
+ if ((len > 0) && BIO_write(bp, (const char *)p, (int)len)
+ != (int)len)
+ goto end;
+ } else if (tag == V_ASN1_OBJECT) {
+ opp = op;
+ if (d2i_ASN1_OBJECT(&o, &opp, len + hl) != NULL) {
+ if (BIO_write(bp, ":", 1) <= 0)
+ goto end;
+ i2a_ASN1_OBJECT(bp, o);
+ } else {
+ if (BIO_write(bp, ":BAD OBJECT", 11) <= 0)
+ goto end;
+ }
+ } else if (tag == V_ASN1_BOOLEAN) {
+ int ii;
+
+ opp = op;
+ ii = d2i_ASN1_BOOLEAN(NULL, &opp, len + hl);
+ if (ii < 0) {
+ if (BIO_write(bp, "Bad boolean\n", 12) <= 0)
+ goto end;
+ }
+ BIO_printf(bp, ":%d", ii);
+ } else if (tag == V_ASN1_BMPSTRING) {
+ /* do the BMP thang */
+ } else if (tag == V_ASN1_OCTET_STRING) {
+ int i, printable = 1;
+
+ opp = op;
+ os = d2i_ASN1_OCTET_STRING(NULL, &opp, len + hl);
+ if (os != NULL && os->length > 0) {
+ opp = os->data;
+ /*
+ * testing whether the octet string is printable
+ */
+ for (i = 0; i < os->length; i++) {
+ if (((opp[i] < ' ') &&
+ (opp[i] != '\n') &&
+ (opp[i] != '\r') &&
+ (opp[i] != '\t')) || (opp[i] > '~')) {
+ printable = 0;
+ break;
+ }
+ }
+ if (printable)
+ /* printable string */
+ {
+ if (BIO_write(bp, ":", 1) <= 0)
+ goto end;
+ if (BIO_write(bp, (const char *)opp, os->length) <= 0)
+ goto end;
+ } else if (!dump)
+ /*
+ * not printable => print octet string as hex dump
+ */
+ {
+ if (BIO_write(bp, "[HEX DUMP]:", 11) <= 0)
+ goto end;
+ for (i = 0; i < os->length; i++) {
+ if (BIO_printf(bp, "%02X", opp[i]) <= 0)
+ goto end;
+ }
+ } else
+ /* print the normal dump */
+ {
+ if (!nl) {
+ if (BIO_write(bp, "\n", 1) <= 0)
+ goto end;
+ }
+ if (BIO_dump_indent(bp,
+ (const char *)opp,
+ ((dump == -1 || dump >
+ os->
+ length) ? os->length : dump),
+ dump_indent) <= 0)
+ goto end;
+ nl = 1;
+ }
+ }
+ if (os != NULL) {
+ M_ASN1_OCTET_STRING_free(os);
+ os = NULL;
+ }
+ } else if (tag == V_ASN1_INTEGER) {
+ ASN1_INTEGER *bs;
+ int i;
+
+ opp = op;
+ bs = d2i_ASN1_INTEGER(NULL, &opp, len + hl);
+ if (bs != NULL) {
+ if (BIO_write(bp, ":", 1) <= 0)
+ goto end;
+ if (bs->type == V_ASN1_NEG_INTEGER)
+ if (BIO_write(bp, "-", 1) <= 0)
+ goto end;
+ for (i = 0; i < bs->length; i++) {
+ if (BIO_printf(bp, "%02X", bs->data[i]) <= 0)
+ goto end;
+ }
+ if (bs->length == 0) {
+ if (BIO_write(bp, "00", 2) <= 0)
+ goto end;
+ }
+ } else {
+ if (BIO_write(bp, "BAD INTEGER", 11) <= 0)
+ goto end;
+ }
+ M_ASN1_INTEGER_free(bs);
+ } else if (tag == V_ASN1_ENUMERATED) {
+ ASN1_ENUMERATED *bs;
+ int i;
+
+ opp = op;
+ bs = d2i_ASN1_ENUMERATED(NULL, &opp, len + hl);
+ if (bs != NULL) {
+ if (BIO_write(bp, ":", 1) <= 0)
+ goto end;
+ if (bs->type == V_ASN1_NEG_ENUMERATED)
+ if (BIO_write(bp, "-", 1) <= 0)
+ goto end;
+ for (i = 0; i < bs->length; i++) {
+ if (BIO_printf(bp, "%02X", bs->data[i]) <= 0)
+ goto end;
+ }
+ if (bs->length == 0) {
+ if (BIO_write(bp, "00", 2) <= 0)
+ goto end;
+ }
+ } else {
+ if (BIO_write(bp, "BAD ENUMERATED", 14) <= 0)
+ goto end;
+ }
+ M_ASN1_ENUMERATED_free(bs);
+ } else if (len > 0 && dump) {
+ if (!nl) {
+ if (BIO_write(bp, "\n", 1) <= 0)
+ goto end;
+ }
+ if (BIO_dump_indent(bp, (const char *)p,
+ ((dump == -1 || dump > len) ? len : dump),
+ dump_indent) <= 0)
+ goto end;
+ nl = 1;
+ }
+
+ if (!nl) {
+ if (BIO_write(bp, "\n", 1) <= 0)
+ goto end;
+ }
+ p += len;
+ if ((tag == V_ASN1_EOC) && (xclass == 0)) {
+ ret = 2; /* End of sequence */
+ goto end;
+ }
+ }
+ length -= len;
+ }
+ ret = 1;
+ end:
+ if (o != NULL)
+ ASN1_OBJECT_free(o);
+ if (os != NULL)
+ M_ASN1_OCTET_STRING_free(os);
+ *pp = p;
+ return (ret);
+}
+
+const char *ASN1_tag2str(int tag)
+{
+ static const char *const tag2str[] = {
+ /* 0-4 */
+ "EOC", "BOOLEAN", "INTEGER", "BIT STRING", "OCTET STRING",
+ /* 5-9 */
+ "NULL", "OBJECT", "OBJECT DESCRIPTOR", "EXTERNAL", "REAL",
+ /* 10-13 */
+ "ENUMERATED", "<ASN1 11>", "UTF8STRING", "<ASN1 13>",
+ /* 15-17 */
+ "<ASN1 14>", "<ASN1 15>", "SEQUENCE", "SET",
+ /* 18-20 */
+ "NUMERICSTRING", "PRINTABLESTRING", "T61STRING",
+ /* 21-24 */
+ "VIDEOTEXSTRING", "IA5STRING", "UTCTIME", "GENERALIZEDTIME",
+ /* 25-27 */
+ "GRAPHICSTRING", "VISIBLESTRING", "GENERALSTRING",
+ /* 28-30 */
+ "UNIVERSALSTRING", "<ASN1 29>", "BMPSTRING"
+ };
+
+ if ((tag == V_ASN1_NEG_INTEGER) || (tag == V_ASN1_NEG_ENUMERATED))
+ tag &= ~0x100;
+
+ if (tag < 0 || tag > 30)
+ return "(unknown)";
+ return tag2str[tag];
+}