X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=apps%2Fasn1pars.c;h=11b07875943be8996fdfc044c32a93b5251bfce6;hp=3d382282e41c497a0fbedc06b9cbe96e941a5b5a;hb=6b3a315003f362150fddf8db072d4309f3f0d962;hpb=7dfb0b774e6592dcbfe47015168a0ac8b44e2a17

diff --git a/apps/asn1pars.c b/apps/asn1pars.c
index 3d382282e4..11b0787594 100644
--- a/apps/asn1pars.c
+++ b/apps/asn1pars.c
@@ -5,21 +5,21 @@
  * 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:
@@ -34,10 +34,10 @@
  *     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 
+ * 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
@@ -49,190 +49,382 @@
  * 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 "err.h"
-#include "evp.h"
-#include "x509.h"
-#include "pem.h"
-
-#define FORMAT_UNDEF	0
-#define FORMAT_ASN1	1
-#define FORMAT_TEXT	2
-#define FORMAT_PEM	3
-
-/* -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 decription file
+#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(argc, argv)
-int argc;
-char **argv;
-	{
-	int i,badops=0,offset=0,ret=1;
-	unsigned int length=0;
-	long num;
-	BIO *in=NULL,*out=NULL,*b64=NULL;
-	int informat,indent=0;
-	char *infile=NULL,*str=NULL,*prog,*oidfile=NULL;
-	BUF_MEM *buf=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);
-
-	prog=argv[0];
-	argc--;
-	argv++;
-	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,"-i") == 0)
-			{
-			indent=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
-			{
-			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 TXT PEM\n");
-		BIO_printf(bio_err," -in arg       inout file\n");
-		BIO_printf(bio_err," -offset arg   offset into file\n");
-		BIO_printf(bio_err," -length arg   lenth of section in file\n");
-		BIO_printf(bio_err," -i            indent entries\n");
-		BIO_printf(bio_err," -oid file     file of extra oid definitions\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);
-
-	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 ((buf=BUF_MEM_new()) == NULL) goto end;
-	if (!BUF_MEM_grow(buf,BUFSIZ*8)) goto end; /* Pre-allocate :-) */
-
-	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 (length == 0) length=(unsigned int)num;
-	if (!ASN1_parse(out,(unsigned char *)&(str[offset]),length,indent))
-		{
-		ERR_print_errors(bio_err);
-		goto end;
-		}
-	ret=0;
-end:
-	if (in != NULL) BIO_free(in);
-	if (out != NULL) BIO_free(out);
-	if (b64 != NULL) BIO_free(b64);
-	if (ret != 0)
-		ERR_print_errors(bio_err);
-	if (buf != NULL) BUF_MEM_free(buf);
-	OBJ_cleanup();
-	EXIT(ret);
-	}
+#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_NULL)) {
+                BIO_printf(bio_err, "Can't parse %s type\n",
+                           typ == V_ASN1_NULL ? "NULL" : "OBJECT");
+                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;
 
+}