-/* 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:
* 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
* 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 <shenson@bigfoot.com> to
- * add the -strparse option which parses nested binary structures
+/*
+ * A nice addition from Dr Stephen Henson <steve@openssl.org> to add the
+ * -strparse option which parses nested binary structures
*/
#include <stdio.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 decription file
- */
+typedef enum OPTION_choice {
+ OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
+ OPT_INFORM, OPT_IN, OPT_OUT, OPT_INDENT, OPT_NOOUT,
+ OPT_OID, OPT_OFFSET, OPT_LENGTH, OPT_DUMP, OPT_DLIMIT,
+ OPT_STRPARSE, OPT_GENSTR, OPT_GENCONF, OPT_STRICTPEM
+} OPTION_CHOICE;
+
+OPTIONS asn1parse_options[] = {
+ {"help", OPT_HELP, '-', "Display this summary"},
+ {"inform", OPT_INFORM, 'F', "input format - one of DER PEM"},
+ {"in", OPT_IN, '<', "input file"},
+ {"out", OPT_OUT, '>', "output file (output format is always DER)"},
+ {"i", OPT_INDENT, 0, "entries"},
+ {"noout", OPT_NOOUT, 0, "don't produce any output"},
+ {"offset", OPT_OFFSET, 'p', "offset into file"},
+ {"length", OPT_LENGTH, 'p', "length of section in file"},
+ {"oid", OPT_OID, '<', "file of extra oid definitions"},
+ {"dump", OPT_DUMP, 0, "unknown data in hex form"},
+ {"dlimit", OPT_DLIMIT, 'p',
+ "dump the first arg bytes of unknown data in hex form"},
+ {"strparse", OPT_STRPARSE, 's',
+ "offset; a series of these can be used to 'dig'"},
+ {OPT_MORE_STR, 0, 0, "into multiple ASN1 blob wrappings"},
+ {"genstr", OPT_GENSTR, 's', "string to generate ASN1 structure from"},
+ {"genconf", OPT_GENCONF, 's', "file to generate ASN1 structure from"},
+ {OPT_MORE_STR, 0, 0, "(-inform will be ignored)"},
+ {"strictpem", OPT_STRICTPEM, 0,
+ "do not attempt base64 decode outside PEM markers"},
+ {NULL}
+};
+
+static int do_generate(char *genstr, char *genconf, BUF_MEM *buf);
+
+int asn1parse_main(int argc, char **argv)
+{
+ ASN1_TYPE *at = NULL;
+ BIO *in = NULL, *b64 = NULL, *derout = NULL;
+ BUF_MEM *buf = NULL;
+ STACK_OF(OPENSSL_STRING) *osk = NULL;
+ char *genstr = NULL, *genconf = NULL;
+ char *infile = NULL, *str = NULL, *oidfile = NULL, *derfile = NULL;
+ char *name = NULL, *header = NULL, *prog;
+ const unsigned char *ctmpbuf;
+ int indent = 0, noout = 0, dump = 0, strictpem = 0, informat = FORMAT_PEM;
+ int offset = 0, ret = 1, i, j;
+ long num, tmplen;
+ unsigned char *tmpbuf;
+ unsigned int length = 0;
+ OPTION_CHOICE o;
+
+ prog = opt_init(argc, argv, asn1parse_options);
+
+ if ((osk = sk_OPENSSL_STRING_new_null()) == NULL) {
+ BIO_printf(bio_err, "%s: Memory allocation failure\n", prog);
+ goto end;
+ }
+
+ while ((o = opt_next()) != OPT_EOF) {
+ switch (o) {
+ case OPT_EOF:
+ case OPT_ERR:
+ opthelp:
+ BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
+ goto end;
+ case OPT_HELP:
+ opt_help(asn1parse_options);
+ ret = 0;
+ goto end;
+ case OPT_INFORM:
+ if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
+ goto opthelp;
+ break;
+ case OPT_IN:
+ infile = opt_arg();
+ break;
+ case OPT_OUT:
+ derfile = opt_arg();
+ break;
+ case OPT_INDENT:
+ indent = 1;
+ break;
+ case OPT_NOOUT:
+ noout = 1;
+ break;
+ case OPT_OID:
+ oidfile = opt_arg();
+ break;
+ case OPT_OFFSET:
+ offset = strtol(opt_arg(), NULL, 0);
+ break;
+ case OPT_LENGTH:
+ length = atoi(opt_arg());
+ break;
+ case OPT_DUMP:
+ dump = -1;
+ break;
+ case OPT_DLIMIT:
+ dump = atoi(opt_arg());
+ break;
+ case OPT_STRPARSE:
+ sk_OPENSSL_STRING_push(osk, opt_arg());
+ break;
+ case OPT_GENSTR:
+ genstr = opt_arg();
+ break;
+ case OPT_GENCONF:
+ genconf = opt_arg();
+ break;
+ case OPT_STRICTPEM:
+ strictpem = 1;
+ informat = FORMAT_PEM;
+ break;
+ }
+ }
+ argc = opt_num_rest();
+ argv = opt_rest();
+
+ if (!app_load_modules(NULL))
+ goto end;
+
+ if (oidfile != NULL) {
+ in = bio_open_default(oidfile, "r");
+ if (in == NULL)
+ goto end;
+ OBJ_create_objects(in);
+ BIO_free(in);
+ }
+
+ if ((in = bio_open_default(infile, "r")) == NULL)
+ goto end;
+
+ if (derfile && (derout = bio_open_default(derfile, "wb")) == NULL)
+ goto end;
+
+ if (strictpem) {
+ if (PEM_read_bio(in, &name, &header, (unsigned char **)&str, &num) !=
+ 1) {
+ BIO_printf(bio_err, "Error reading PEM file\n");
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ } else {
+
+ 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(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(bio_out, (unsigned char *)&(str[offset]), length,
+ indent, dump)) {
+ ERR_print_errors(bio_err);
+ goto end;
+ }
+ ret = 0;
+ end:
+ BIO_free(derout);
+ BIO_free(in);
+ BIO_free(b64);
+ if (ret != 0)
+ ERR_print_errors(bio_err);
+ BUF_MEM_free(buf);
+ OPENSSL_free(name);
+ OPENSSL_free(header);
+ if (strictpem)
+ OPENSSL_free(str);
+ ASN1_TYPE_free(at);
+ sk_OPENSSL_STRING_free(osk);
+ OBJ_cleanup();
+ return (ret);
+}
+
+static int do_generate(char *genstr, char *genconf, BUF_MEM *buf)
+{
+ CONF *cnf = NULL;
+ int len;
+ unsigned char *p;
+ ASN1_TYPE *atyp = NULL;
+
+ if (genconf) {
+ if ((cnf = app_load_config(genconf)) == NULL)
+ goto err;
+ if (!genstr)
+ genstr = NCONF_get_string(cnf, "default", "asn1");
+ if (!genstr) {
+ BIO_printf(bio_err, "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);
-#undef PROG
-#define PROG asn1parse_main
-
-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;
- char *infile=NULL,*str=NULL,*prog,*oidfile=NULL, *derfile=NULL;
- unsigned char *tmpbuf;
- BUF_MEM *buf=NULL;
- STACK *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);
-
- prog=argv[0];
- argc--;
- argv++;
- if ((osk=sk_new_null()) == NULL)
- {
- BIO_printf(bio_err,"Malloc 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,"-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,"-strparse") == 0)
- {
- if (--argc < 1) goto bad;
- sk_push(osk,*(++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 TXT PEM\n");
- BIO_printf(bio_err," -in arg input 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");
- 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," -out filename output DER encoding to file\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 (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 (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_num(osk))
- {
- tmpbuf=(unsigned char *)str;
- tmplen=num;
- for (i=0; i<sk_num(osk); i++)
- {
- ASN1_TYPE *atmp;
- j=atoi(sk_value(osk,i));
- if (j == 0)
- {
- BIO_printf(bio_err,"'%s' is an invalid number\n",sk_value(osk,i));
- continue;
- }
- tmpbuf+=j;
- tmplen-=j;
- atmp = at;
- at = d2i_ASN1_TYPE(NULL,&tmpbuf,tmplen);
- ASN1_TYPE_free(atmp);
- if(!at)
- {
- BIO_printf(bio_err,"Error parsing structure\n");
- 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 (length == 0) 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 (!ASN1_parse(out,(unsigned char *)&(str[offset]),length,indent))
- {
- ERR_print_errors(bio_err);
- goto end;
- }
- ret=0;
-end:
- BIO_free(derout);
- 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);
- if (at != NULL) ASN1_TYPE_free(at);
- if (osk != NULL) sk_free(osk);
- OBJ_cleanup();
- EXIT(ret);
- }
+ ASN1_TYPE_free(atyp);
+ return len;
+ err:
+ NCONF_free(cnf);
+ ASN1_TYPE_free(atyp);
+ return -1;
+}
projects / openssl.git / blobdiff