155714Skris/* apps/asn1pars.c */ 255714Skris/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 355714Skris * All rights reserved. 455714Skris * 555714Skris * This package is an SSL implementation written 655714Skris * by Eric Young (eay@cryptsoft.com). 755714Skris * The implementation was written so as to conform with Netscapes SSL. 855714Skris * 955714Skris * This library is free for commercial and non-commercial use as long as 1055714Skris * the following conditions are aheared to. The following conditions 1155714Skris * apply to all code found in this distribution, be it the RC4, RSA, 1255714Skris * lhash, DES, etc., code; not just the SSL code. The SSL documentation 1355714Skris * included with this distribution is covered by the same copyright terms 1455714Skris * except that the holder is Tim Hudson (tjh@cryptsoft.com). 1555714Skris * 1655714Skris * Copyright remains Eric Young's, and as such any Copyright notices in 1755714Skris * the code are not to be removed. 1855714Skris * If this package is used in a product, Eric Young should be given attribution 1955714Skris * as the author of the parts of the library used. 2055714Skris * This can be in the form of a textual message at program startup or 2155714Skris * in documentation (online or textual) provided with the package. 2255714Skris * 2355714Skris * Redistribution and use in source and binary forms, with or without 2455714Skris * modification, are permitted provided that the following conditions 2555714Skris * are met: 2655714Skris * 1. Redistributions of source code must retain the copyright 2755714Skris * notice, this list of conditions and the following disclaimer. 2855714Skris * 2. Redistributions in binary form must reproduce the above copyright 2955714Skris * notice, this list of conditions and the following disclaimer in the 3055714Skris * documentation and/or other materials provided with the distribution. 3155714Skris * 3. All advertising materials mentioning features or use of this software 3255714Skris * must display the following acknowledgement: 3355714Skris * "This product includes cryptographic software written by 3455714Skris * Eric Young (eay@cryptsoft.com)" 3555714Skris * The word 'cryptographic' can be left out if the rouines from the library 3655714Skris * being used are not cryptographic related :-). 3755714Skris * 4. If you include any Windows specific code (or a derivative thereof) from 3855714Skris * the apps directory (application code) you must include an acknowledgement: 3955714Skris * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 4055714Skris * 4155714Skris * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 4255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 4355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 4455714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 4555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 4655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 4755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 4955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 5055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 5155714Skris * SUCH DAMAGE. 5255714Skris * 5355714Skris * The licence and distribution terms for any publically available version or 5455714Skris * derivative of this code cannot be changed. i.e. this code cannot simply be 5555714Skris * copied and put under another distribution licence 5655714Skris * [including the GNU Public Licence.] 5755714Skris */ 5855714Skris 59194206Ssimon/* A nice addition from Dr Stephen Henson <steve@openssl.org> to 6055714Skris * add the -strparse option which parses nested binary structures 6155714Skris */ 6255714Skris 6355714Skris#include <stdio.h> 6455714Skris#include <stdlib.h> 6555714Skris#include <string.h> 6655714Skris#include "apps.h" 6755714Skris#include <openssl/err.h> 6855714Skris#include <openssl/evp.h> 6955714Skris#include <openssl/x509.h> 7055714Skris#include <openssl/pem.h> 7155714Skris 7255714Skris/* -inform arg - input format - default PEM (DER or PEM) 7355714Skris * -in arg - input file - default stdin 7455714Skris * -i - indent the details by depth 7555714Skris * -offset - where in the file to start 7655714Skris * -length - how many bytes to use 7759191Skris * -oid file - extra oid description file 7855714Skris */ 7955714Skris 8055714Skris#undef PROG 8155714Skris#define PROG asn1parse_main 8255714Skris 8359191Skrisint MAIN(int, char **); 8459191Skris 85160814Ssimonstatic int do_generate(BIO *bio, char *genstr, char *genconf, BUF_MEM *buf); 86160814Ssimon 8755714Skrisint MAIN(int argc, char **argv) 8855714Skris { 8955714Skris int i,badops=0,offset=0,ret=1,j; 9055714Skris unsigned int length=0; 9155714Skris long num,tmplen; 9255714Skris BIO *in=NULL,*out=NULL,*b64=NULL, *derout = NULL; 9368651Skris int informat,indent=0, noout = 0, dump = 0; 9455714Skris char *infile=NULL,*str=NULL,*prog,*oidfile=NULL, *derfile=NULL; 95160814Ssimon char *genstr=NULL, *genconf=NULL; 9655714Skris unsigned char *tmpbuf; 97160814Ssimon const unsigned char *ctmpbuf; 9855714Skris BUF_MEM *buf=NULL; 99238405Sjkim STACK_OF(OPENSSL_STRING) *osk=NULL; 10055714Skris ASN1_TYPE *at=NULL; 10155714Skris 10255714Skris informat=FORMAT_PEM; 10355714Skris 10455714Skris apps_startup(); 10555714Skris 10655714Skris if (bio_err == NULL) 10755714Skris if ((bio_err=BIO_new(BIO_s_file())) != NULL) 10855714Skris BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT); 10955714Skris 110109998Smarkm if (!load_config(bio_err, NULL)) 111109998Smarkm goto end; 112109998Smarkm 11355714Skris prog=argv[0]; 11455714Skris argc--; 11555714Skris argv++; 116238405Sjkim if ((osk=sk_OPENSSL_STRING_new_null()) == NULL) 11755714Skris { 11868651Skris BIO_printf(bio_err,"Memory allocation failure\n"); 11955714Skris goto end; 12055714Skris } 12155714Skris while (argc >= 1) 12255714Skris { 12355714Skris if (strcmp(*argv,"-inform") == 0) 12455714Skris { 12555714Skris if (--argc < 1) goto bad; 12655714Skris informat=str2fmt(*(++argv)); 12755714Skris } 12855714Skris else if (strcmp(*argv,"-in") == 0) 12955714Skris { 13055714Skris if (--argc < 1) goto bad; 13155714Skris infile= *(++argv); 13255714Skris } 13355714Skris else if (strcmp(*argv,"-out") == 0) 13455714Skris { 13555714Skris if (--argc < 1) goto bad; 13655714Skris derfile= *(++argv); 13755714Skris } 13855714Skris else if (strcmp(*argv,"-i") == 0) 13955714Skris { 14055714Skris indent=1; 14155714Skris } 14259191Skris else if (strcmp(*argv,"-noout") == 0) noout = 1; 14355714Skris else if (strcmp(*argv,"-oid") == 0) 14455714Skris { 14555714Skris if (--argc < 1) goto bad; 14655714Skris oidfile= *(++argv); 14755714Skris } 14855714Skris else if (strcmp(*argv,"-offset") == 0) 14955714Skris { 15055714Skris if (--argc < 1) goto bad; 15155714Skris offset= atoi(*(++argv)); 15255714Skris } 15355714Skris else if (strcmp(*argv,"-length") == 0) 15455714Skris { 15555714Skris if (--argc < 1) goto bad; 15655714Skris length= atoi(*(++argv)); 15755714Skris if (length == 0) goto bad; 15855714Skris } 15968651Skris else if (strcmp(*argv,"-dump") == 0) 16068651Skris { 16168651Skris dump= -1; 16268651Skris } 16368651Skris else if (strcmp(*argv,"-dlimit") == 0) 16468651Skris { 16568651Skris if (--argc < 1) goto bad; 16668651Skris dump= atoi(*(++argv)); 16768651Skris if (dump <= 0) goto bad; 16868651Skris } 16955714Skris else if (strcmp(*argv,"-strparse") == 0) 17055714Skris { 17155714Skris if (--argc < 1) goto bad; 172238405Sjkim sk_OPENSSL_STRING_push(osk,*(++argv)); 17355714Skris } 174160814Ssimon else if (strcmp(*argv,"-genstr") == 0) 175160814Ssimon { 176160814Ssimon if (--argc < 1) goto bad; 177160814Ssimon genstr= *(++argv); 178160814Ssimon } 179160814Ssimon else if (strcmp(*argv,"-genconf") == 0) 180160814Ssimon { 181160814Ssimon if (--argc < 1) goto bad; 182160814Ssimon genconf= *(++argv); 183160814Ssimon } 18455714Skris else 18555714Skris { 18655714Skris BIO_printf(bio_err,"unknown option %s\n",*argv); 18755714Skris badops=1; 18855714Skris break; 18955714Skris } 19055714Skris argc--; 19155714Skris argv++; 19255714Skris } 19355714Skris 19455714Skris if (badops) 19555714Skris { 19655714Skrisbad: 19755714Skris BIO_printf(bio_err,"%s [options] <infile\n",prog); 19855714Skris BIO_printf(bio_err,"where options are\n"); 199160814Ssimon BIO_printf(bio_err," -inform arg input format - one of DER PEM\n"); 20055714Skris BIO_printf(bio_err," -in arg input file\n"); 201100936Snectar BIO_printf(bio_err," -out arg output file (output format is always DER\n"); 20259191Skris BIO_printf(bio_err," -noout arg don't produce any output\n"); 20355714Skris BIO_printf(bio_err," -offset arg offset into file\n"); 20459191Skris BIO_printf(bio_err," -length arg length of section in file\n"); 20555714Skris BIO_printf(bio_err," -i indent entries\n"); 20668651Skris BIO_printf(bio_err," -dump dump unknown data in hex form\n"); 20768651Skris BIO_printf(bio_err," -dlimit arg dump the first arg bytes of unknown data in hex form\n"); 20855714Skris BIO_printf(bio_err," -oid file file of extra oid definitions\n"); 20955714Skris BIO_printf(bio_err," -strparse offset\n"); 21055714Skris BIO_printf(bio_err," a series of these can be used to 'dig' into multiple\n"); 21155714Skris BIO_printf(bio_err," ASN1 blob wrappings\n"); 212160814Ssimon BIO_printf(bio_err," -genstr str string to generate ASN1 structure from\n"); 213160814Ssimon BIO_printf(bio_err," -genconf file file to generate ASN1 structure from\n"); 21455714Skris goto end; 21555714Skris } 21655714Skris 21755714Skris ERR_load_crypto_strings(); 21855714Skris 21955714Skris in=BIO_new(BIO_s_file()); 22055714Skris out=BIO_new(BIO_s_file()); 22155714Skris if ((in == NULL) || (out == NULL)) 22255714Skris { 22355714Skris ERR_print_errors(bio_err); 22455714Skris goto end; 22555714Skris } 22655714Skris BIO_set_fp(out,stdout,BIO_NOCLOSE|BIO_FP_TEXT); 227109998Smarkm#ifdef OPENSSL_SYS_VMS 22868651Skris { 22968651Skris BIO *tmpbio = BIO_new(BIO_f_linebuffer()); 23068651Skris out = BIO_push(tmpbio, out); 23168651Skris } 23268651Skris#endif 23355714Skris 23455714Skris if (oidfile != NULL) 23555714Skris { 23655714Skris if (BIO_read_filename(in,oidfile) <= 0) 23755714Skris { 23855714Skris BIO_printf(bio_err,"problems opening %s\n",oidfile); 23955714Skris ERR_print_errors(bio_err); 24055714Skris goto end; 24155714Skris } 24255714Skris OBJ_create_objects(in); 24355714Skris } 24455714Skris 24555714Skris if (infile == NULL) 24655714Skris BIO_set_fp(in,stdin,BIO_NOCLOSE); 24755714Skris else 24855714Skris { 24955714Skris if (BIO_read_filename(in,infile) <= 0) 25055714Skris { 25155714Skris perror(infile); 25255714Skris goto end; 25355714Skris } 25455714Skris } 25555714Skris 25655714Skris if (derfile) { 25755714Skris if(!(derout = BIO_new_file(derfile, "wb"))) { 25855714Skris BIO_printf(bio_err,"problems opening %s\n",derfile); 25955714Skris ERR_print_errors(bio_err); 26055714Skris goto end; 26155714Skris } 26255714Skris } 26355714Skris 26455714Skris if ((buf=BUF_MEM_new()) == NULL) goto end; 26555714Skris if (!BUF_MEM_grow(buf,BUFSIZ*8)) goto end; /* Pre-allocate :-) */ 26655714Skris 267160814Ssimon if (genstr || genconf) 26855714Skris { 269160814Ssimon num = do_generate(bio_err, genstr, genconf, buf); 270160814Ssimon if (num < 0) 271160814Ssimon { 272160814Ssimon ERR_print_errors(bio_err); 27355714Skris goto end; 274160814Ssimon } 27555714Skris } 27655714Skris 277160814Ssimon else 27855714Skris { 279160814Ssimon 280160814Ssimon if (informat == FORMAT_PEM) 281160814Ssimon { 282160814Ssimon BIO *tmp; 283160814Ssimon 284160814Ssimon if ((b64=BIO_new(BIO_f_base64())) == NULL) 285160814Ssimon goto end; 286160814Ssimon BIO_push(b64,in); 287160814Ssimon tmp=in; 288160814Ssimon in=b64; 289160814Ssimon b64=tmp; 290160814Ssimon } 291160814Ssimon 292160814Ssimon num=0; 293160814Ssimon for (;;) 294160814Ssimon { 295160814Ssimon if (!BUF_MEM_grow(buf,(int)num+BUFSIZ)) goto end; 296160814Ssimon i=BIO_read(in,&(buf->data[num]),BUFSIZ); 297160814Ssimon if (i <= 0) break; 298160814Ssimon num+=i; 299160814Ssimon } 30055714Skris } 30155714Skris str=buf->data; 30255714Skris 30355714Skris /* If any structs to parse go through in sequence */ 30455714Skris 305238405Sjkim if (sk_OPENSSL_STRING_num(osk)) 30655714Skris { 30755714Skris tmpbuf=(unsigned char *)str; 30855714Skris tmplen=num; 309238405Sjkim for (i=0; i<sk_OPENSSL_STRING_num(osk); i++) 31055714Skris { 311160814Ssimon ASN1_TYPE *atmp; 312142425Snectar int typ; 313238405Sjkim j=atoi(sk_OPENSSL_STRING_value(osk,i)); 31455714Skris if (j == 0) 31555714Skris { 316238405Sjkim BIO_printf(bio_err,"'%s' is an invalid number\n",sk_OPENSSL_STRING_value(osk,i)); 31755714Skris continue; 31855714Skris } 31955714Skris tmpbuf+=j; 32055714Skris tmplen-=j; 32155714Skris atmp = at; 322160814Ssimon ctmpbuf = tmpbuf; 323160814Ssimon at = d2i_ASN1_TYPE(NULL,&ctmpbuf,tmplen); 32455714Skris ASN1_TYPE_free(atmp); 32555714Skris if(!at) 32655714Skris { 32755714Skris BIO_printf(bio_err,"Error parsing structure\n"); 32855714Skris ERR_print_errors(bio_err); 32955714Skris goto end; 33055714Skris } 331142425Snectar typ = ASN1_TYPE_get(at); 332142425Snectar if ((typ == V_ASN1_OBJECT) 333142425Snectar || (typ == V_ASN1_NULL)) 334142425Snectar { 335142425Snectar BIO_printf(bio_err, "Can't parse %s type\n", 336142425Snectar typ == V_ASN1_NULL ? "NULL" : "OBJECT"); 337142425Snectar ERR_print_errors(bio_err); 338142425Snectar goto end; 339142425Snectar } 34055714Skris /* hmm... this is a little evil but it works */ 34155714Skris tmpbuf=at->value.asn1_string->data; 34255714Skris tmplen=at->value.asn1_string->length; 34355714Skris } 34455714Skris str=(char *)tmpbuf; 34555714Skris num=tmplen; 34655714Skris } 34755714Skris 348127128Snectar if (offset >= num) 349127128Snectar { 350127128Snectar BIO_printf(bio_err, "Error: offset too large\n"); 351127128Snectar goto end; 352127128Snectar } 353127128Snectar 354127128Snectar num -= offset; 355127128Snectar 356127128Snectar if ((length == 0) || ((long)length > num)) length=(unsigned int)num; 35755714Skris if(derout) { 35855714Skris if(BIO_write(derout, str + offset, length) != (int)length) { 35955714Skris BIO_printf(bio_err, "Error writing output\n"); 36055714Skris ERR_print_errors(bio_err); 36155714Skris goto end; 36255714Skris } 36355714Skris } 36459191Skris if (!noout && 36568651Skris !ASN1_parse_dump(out,(unsigned char *)&(str[offset]),length, 36668651Skris indent,dump)) 36755714Skris { 36855714Skris ERR_print_errors(bio_err); 36955714Skris goto end; 37055714Skris } 37155714Skris ret=0; 37255714Skrisend: 37355714Skris BIO_free(derout); 37455714Skris if (in != NULL) BIO_free(in); 37568651Skris if (out != NULL) BIO_free_all(out); 37655714Skris if (b64 != NULL) BIO_free(b64); 37755714Skris if (ret != 0) 37855714Skris ERR_print_errors(bio_err); 37955714Skris if (buf != NULL) BUF_MEM_free(buf); 38055714Skris if (at != NULL) ASN1_TYPE_free(at); 381238405Sjkim if (osk != NULL) sk_OPENSSL_STRING_free(osk); 38255714Skris OBJ_cleanup(); 383109998Smarkm apps_shutdown(); 384109998Smarkm OPENSSL_EXIT(ret); 38555714Skris } 38655714Skris 387160814Ssimonstatic int do_generate(BIO *bio, char *genstr, char *genconf, BUF_MEM *buf) 388160814Ssimon { 389160814Ssimon CONF *cnf = NULL; 390160814Ssimon int len; 391160814Ssimon long errline; 392160814Ssimon unsigned char *p; 393160814Ssimon ASN1_TYPE *atyp = NULL; 394160814Ssimon 395160814Ssimon if (genconf) 396160814Ssimon { 397160814Ssimon cnf = NCONF_new(NULL); 398160814Ssimon if (!NCONF_load(cnf, genconf, &errline)) 399160814Ssimon goto conferr; 400160814Ssimon if (!genstr) 401160814Ssimon genstr = NCONF_get_string(cnf, "default", "asn1"); 402160814Ssimon if (!genstr) 403160814Ssimon { 404160814Ssimon BIO_printf(bio, "Can't find 'asn1' in '%s'\n", genconf); 405160814Ssimon goto err; 406160814Ssimon } 407160814Ssimon } 408160814Ssimon 409160814Ssimon atyp = ASN1_generate_nconf(genstr, cnf); 410160814Ssimon NCONF_free(cnf); 411237657Sjkim cnf = NULL; 412160814Ssimon 413160814Ssimon if (!atyp) 414160814Ssimon return -1; 415160814Ssimon 416160814Ssimon len = i2d_ASN1_TYPE(atyp, NULL); 417160814Ssimon 418160814Ssimon if (len <= 0) 419160814Ssimon goto err; 420160814Ssimon 421160814Ssimon if (!BUF_MEM_grow(buf,len)) 422160814Ssimon goto err; 423160814Ssimon 424160814Ssimon p=(unsigned char *)buf->data; 425160814Ssimon 426160814Ssimon i2d_ASN1_TYPE(atyp, &p); 427160814Ssimon 428160814Ssimon ASN1_TYPE_free(atyp); 429160814Ssimon return len; 430160814Ssimon 431160814Ssimon conferr: 432160814Ssimon 433160814Ssimon if (errline > 0) 434160814Ssimon BIO_printf(bio, "Error on line %ld of config file '%s'\n", 435160814Ssimon errline, genconf); 436160814Ssimon else 437160814Ssimon BIO_printf(bio, "Error loading config file '%s'\n", genconf); 438160814Ssimon 439160814Ssimon err: 440160814Ssimon NCONF_free(cnf); 441160814Ssimon ASN1_TYPE_free(atyp); 442160814Ssimon 443160814Ssimon return -1; 444160814Ssimon 445160814Ssimon } 446