X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=apps%2Fasn1pars.c;h=24b55681f0123dacabd405a51a3ddcd48e9e418c;hp=305db1590359068f9e7360cbcd43a21faf5d94b6;hb=b48357d9953decc43333979ca11ebc1500040f4e;hpb=875a644a9047e96dfcce27af876d30460759805e diff --git a/apps/asn1pars.c b/apps/asn1pars.c index 305db15903..24b55681f0 100644 --- a/apps/asn1pars.c +++ b/apps/asn1pars.c @@ -1,25 +1,24 @@ -/* 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: @@ -34,10 +33,10 @@ * 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 @@ -49,15 +48,16 @@ * 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 to - * add the -strparse option which parses nested binary structures +/* + * A nice addition from Dr Stephen Henson to add the + * -strparse option which parses nested binary structures */ #include @@ -69,366 +69,312 @@ #include #include -/* -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 *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_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_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] 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; ivalue.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_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); - - 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; - - } +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); + + ASN1_TYPE_free(atyp); + return len; + + err: + NCONF_free(cnf); + ASN1_TYPE_free(atyp); + return -1; +}