diff options
Diffstat (limited to 'openssl/apps/asn1pars.c')
| -rw-r--r-- | openssl/apps/asn1pars.c | 445 |
1 files changed, 445 insertions, 0 deletions
diff --git a/openssl/apps/asn1pars.c b/openssl/apps/asn1pars.c new file mode 100644 index 00000000..0d660707 --- /dev/null +++ b/openssl/apps/asn1pars.c @@ -0,0 +1,445 @@ +/* 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_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; + 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; + + } |