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authorWilliam Joye <wjoye@cfa.harvard.edu>2017-05-02 16:41:35 (GMT)
committerWilliam Joye <wjoye@cfa.harvard.edu>2017-05-02 16:41:35 (GMT)
commit3d328008deedc58cd7a11c79063cefa7d662d4fc (patch)
treecb41a048885ce7b493f406360cf5f6edf689c468 /openssl/apps/asn1pars.c
parent0a2b8b8e0bc2e91a9f10659b30e2e4f5b79ce692 (diff)
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Diffstat (limited to 'openssl/apps/asn1pars.c')
-rw-r--r--openssl/apps/asn1pars.c430
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diff --git a/openssl/apps/asn1pars.c b/openssl/apps/asn1pars.c
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+/* apps/asn1pars.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.]
+ */
+
+/*
+ * A nice addition from Dr Stephen Henson <steve@openssl.org> to add the
+ * -strparse option which parses nested binary structures
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "apps.h"
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/x509.h>
+#include <openssl/pem.h>
+
+/*-
+ * -inform arg - input format - default PEM (DER or PEM)
+ * -in arg - input file - default stdin
+ * -i - indent the details by depth
+ * -offset - where in the file to start
+ * -length - how many bytes to use
+ * -oid file - extra oid description file
+ */
+
+#undef PROG
+#define PROG asn1parse_main
+
+int MAIN(int, char **);
+
+static int do_generate(BIO *bio, char *genstr, char *genconf, BUF_MEM *buf);
+
+int MAIN(int argc, char **argv)
+{
+ int i, badops = 0, offset = 0, ret = 1, j;
+ unsigned int length = 0;
+ long num, tmplen;
+ BIO *in = NULL, *out = NULL, *b64 = NULL, *derout = NULL;
+ int informat, indent = 0, noout = 0, dump = 0;
+ char *infile = NULL, *str = NULL, *prog, *oidfile = NULL, *derfile = NULL;
+ char *genstr = NULL, *genconf = NULL;
+ unsigned char *tmpbuf;
+ const unsigned char *ctmpbuf;
+ BUF_MEM *buf = NULL;
+ STACK_OF(OPENSSL_STRING) *osk = NULL;
+ ASN1_TYPE *at = NULL;
+
+ informat = FORMAT_PEM;
+
+ apps_startup();
+
+ if (bio_err == NULL)
+ if ((bio_err = BIO_new(BIO_s_file())) != NULL)
+ BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
+
+ if (!load_config(bio_err, NULL))
+ goto end;
+
+ prog = argv[0];
+ argc--;
+ argv++;
+ if ((osk = sk_OPENSSL_STRING_new_null()) == NULL) {
+ BIO_printf(bio_err, "Memory allocation failure\n");
+ goto end;
+ }
+ while (argc >= 1) {
+ if (strcmp(*argv, "-inform") == 0) {
+ if (--argc < 1)
+ goto bad;
+ informat = str2fmt(*(++argv));
+ } else if (strcmp(*argv, "-in") == 0) {
+ if (--argc < 1)
+ goto bad;
+ infile = *(++argv);
+ } else if (strcmp(*argv, "-out") == 0) {
+ if (--argc < 1)
+ goto bad;
+ derfile = *(++argv);
+ } else if (strcmp(*argv, "-i") == 0) {
+ indent = 1;
+ } else if (strcmp(*argv, "-noout") == 0)
+ noout = 1;
+ else if (strcmp(*argv, "-oid") == 0) {
+ if (--argc < 1)
+ goto bad;
+ oidfile = *(++argv);
+ } else if (strcmp(*argv, "-offset") == 0) {
+ if (--argc < 1)
+ goto bad;
+ offset = atoi(*(++argv));
+ } else if (strcmp(*argv, "-length") == 0) {
+ if (--argc < 1)
+ goto bad;
+ length = atoi(*(++argv));
+ if (length == 0)
+ goto bad;
+ } else if (strcmp(*argv, "-dump") == 0) {
+ dump = -1;
+ } else if (strcmp(*argv, "-dlimit") == 0) {
+ if (--argc < 1)
+ goto bad;
+ dump = atoi(*(++argv));
+ if (dump <= 0)
+ goto bad;
+ } else if (strcmp(*argv, "-strparse") == 0) {
+ if (--argc < 1)
+ goto bad;
+ sk_OPENSSL_STRING_push(osk, *(++argv));
+ } else if (strcmp(*argv, "-genstr") == 0) {
+ if (--argc < 1)
+ goto bad;
+ genstr = *(++argv);
+ } else if (strcmp(*argv, "-genconf") == 0) {
+ if (--argc < 1)
+ goto bad;
+ genconf = *(++argv);
+ } else {
+ BIO_printf(bio_err, "unknown option %s\n", *argv);
+ badops = 1;
+ break;
+ }
+ argc--;
+ argv++;
+ }
+
+ if (badops) {
+ bad:
+ BIO_printf(bio_err, "%s [options] <infile\n", prog);
+ BIO_printf(bio_err, "where options are\n");
+ BIO_printf(bio_err, " -inform arg input format - one of DER PEM\n");
+ BIO_printf(bio_err, " -in arg input file\n");
+ BIO_printf(bio_err,
+ " -out arg output file (output format is always DER\n");
+ BIO_printf(bio_err, " -noout arg don't produce any output\n");
+ BIO_printf(bio_err, " -offset arg offset into file\n");
+ BIO_printf(bio_err, " -length arg length of section in file\n");
+ BIO_printf(bio_err, " -i indent entries\n");
+ BIO_printf(bio_err, " -dump dump unknown data in hex form\n");
+ BIO_printf(bio_err,
+ " -dlimit arg dump the first arg bytes of unknown data in hex form\n");
+ BIO_printf(bio_err, " -oid file file of extra oid definitions\n");
+ BIO_printf(bio_err, " -strparse offset\n");
+ BIO_printf(bio_err,
+ " a series of these can be used to 'dig' into multiple\n");
+ BIO_printf(bio_err, " ASN1 blob wrappings\n");
+ BIO_printf(bio_err,
+ " -genstr str string to generate ASN1 structure from\n");
+ BIO_printf(bio_err,
+ " -genconf file file to generate ASN1 structure from\n");
+ goto end;
+ }
+
+ ERR_load_crypto_strings();
+
+ in = BIO_new(BIO_s_file());
+ out = BIO_new(BIO_s_file());
+ if ((in == NULL) || (out == NULL)) {
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ BIO_set_fp(out, stdout, BIO_NOCLOSE | BIO_FP_TEXT);
+#ifdef OPENSSL_SYS_VMS
+ {
+ BIO *tmpbio = BIO_new(BIO_f_linebuffer());
+ out = BIO_push(tmpbio, out);
+ }
+#endif
+
+ if (oidfile != NULL) {
+ if (BIO_read_filename(in, oidfile) <= 0) {
+ BIO_printf(bio_err, "problems opening %s\n", oidfile);
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ OBJ_create_objects(in);
+ }
+
+ if (infile == NULL)
+ BIO_set_fp(in, stdin, BIO_NOCLOSE);
+ else {
+ if (BIO_read_filename(in, infile) <= 0) {
+ perror(infile);
+ goto end;
+ }
+ }
+
+ if (derfile) {
+ if (!(derout = BIO_new_file(derfile, "wb"))) {
+ BIO_printf(bio_err, "problems opening %s\n", derfile);
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ }
+
+ if ((buf = BUF_MEM_new()) == NULL)
+ goto end;
+ if (!BUF_MEM_grow(buf, BUFSIZ * 8))
+ goto end; /* Pre-allocate :-) */
+
+ if (genstr || genconf) {
+ num = do_generate(bio_err, genstr, genconf, buf);
+ if (num < 0) {
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ }
+
+ else {
+
+ if (informat == FORMAT_PEM) {
+ BIO *tmp;
+
+ if ((b64 = BIO_new(BIO_f_base64())) == NULL)
+ goto end;
+ BIO_push(b64, in);
+ tmp = in;
+ in = b64;
+ b64 = tmp;
+ }
+
+ num = 0;
+ for (;;) {
+ if (!BUF_MEM_grow(buf, (int)num + BUFSIZ))
+ goto end;
+ i = BIO_read(in, &(buf->data[num]), BUFSIZ);
+ if (i <= 0)
+ break;
+ num += i;
+ }
+ }
+ str = buf->data;
+
+ /* If any structs to parse go through in sequence */
+
+ if (sk_OPENSSL_STRING_num(osk)) {
+ tmpbuf = (unsigned char *)str;
+ tmplen = num;
+ for (i = 0; i < sk_OPENSSL_STRING_num(osk); i++) {
+ ASN1_TYPE *atmp;
+ int typ;
+ j = atoi(sk_OPENSSL_STRING_value(osk, i));
+ if (j == 0) {
+ BIO_printf(bio_err, "'%s' is an invalid number\n",
+ sk_OPENSSL_STRING_value(osk, i));
+ continue;
+ }
+ tmpbuf += j;
+ tmplen -= j;
+ atmp = at;
+ ctmpbuf = tmpbuf;
+ at = d2i_ASN1_TYPE(NULL, &ctmpbuf, tmplen);
+ ASN1_TYPE_free(atmp);
+ if (!at) {
+ BIO_printf(bio_err, "Error parsing structure\n");
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ typ = ASN1_TYPE_get(at);
+ if ((typ == V_ASN1_OBJECT)
+ || (typ == V_ASN1_BOOLEAN)
+ || (typ == V_ASN1_NULL)) {
+ BIO_printf(bio_err, "Can't parse %s type\n", ASN1_tag2str(typ));
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ /* hmm... this is a little evil but it works */
+ tmpbuf = at->value.asn1_string->data;
+ tmplen = at->value.asn1_string->length;
+ }
+ str = (char *)tmpbuf;
+ num = tmplen;
+ }
+
+ if (offset >= num) {
+ BIO_printf(bio_err, "Error: offset too large\n");
+ goto end;
+ }
+
+ num -= offset;
+
+ if ((length == 0) || ((long)length > num))
+ length = (unsigned int)num;
+ if (derout) {
+ if (BIO_write(derout, str + offset, length) != (int)length) {
+ BIO_printf(bio_err, "Error writing output\n");
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ }
+ if (!noout &&
+ !ASN1_parse_dump(out, (unsigned char *)&(str[offset]), length,
+ indent, dump)) {
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ ret = 0;
+ end:
+ BIO_free(derout);
+ if (in != NULL)
+ BIO_free(in);
+ if (out != NULL)
+ BIO_free_all(out);
+ if (b64 != NULL)
+ BIO_free(b64);
+ if (ret != 0)
+ ERR_print_errors(bio_err);
+ if (buf != NULL)
+ BUF_MEM_free(buf);
+ if (at != NULL)
+ ASN1_TYPE_free(at);
+ if (osk != NULL)
+ sk_OPENSSL_STRING_free(osk);
+ OBJ_cleanup();
+ apps_shutdown();
+ OPENSSL_EXIT(ret);
+}
+
+static int do_generate(BIO *bio, char *genstr, char *genconf, BUF_MEM *buf)
+{
+ CONF *cnf = NULL;
+ int len;
+ long errline = 0;
+ unsigned char *p;
+ ASN1_TYPE *atyp = NULL;
+
+ if (genconf) {
+ cnf = NCONF_new(NULL);
+ if (!NCONF_load(cnf, genconf, &errline))
+ goto conferr;
+ if (!genstr)
+ genstr = NCONF_get_string(cnf, "default", "asn1");
+ if (!genstr) {
+ BIO_printf(bio, "Can't find 'asn1' in '%s'\n", genconf);
+ goto err;
+ }
+ }
+
+ atyp = ASN1_generate_nconf(genstr, cnf);
+ NCONF_free(cnf);
+ cnf = NULL;
+
+ if (!atyp)
+ return -1;
+
+ len = i2d_ASN1_TYPE(atyp, NULL);
+
+ if (len <= 0)
+ goto err;
+
+ if (!BUF_MEM_grow(buf, len))
+ goto err;
+
+ p = (unsigned char *)buf->data;
+
+ i2d_ASN1_TYPE(atyp, &p);
+
+ ASN1_TYPE_free(atyp);
+ return len;
+
+ conferr:
+
+ if (errline > 0)
+ BIO_printf(bio, "Error on line %ld of config file '%s'\n",
+ errline, genconf);
+ else
+ BIO_printf(bio, "Error loading config file '%s'\n", genconf);
+
+ err:
+ NCONF_free(cnf);
+ ASN1_TYPE_free(atyp);
+
+ return -1;
+
+}