| /* 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.] */ |
| |
| #include <openssl/asn1.h> |
| |
| #include <openssl/bio.h> |
| #include <openssl/err.h> |
| #include <openssl/mem.h> |
| |
| #define ASN1_PARSE_MAXDEPTH 128 |
| |
| static int asn1_print_info(BIO *bp, int tag, int xclass, int constructed, |
| int indent); |
| static int asn1_parse2(BIO *bp, const unsigned char **pp, long length, |
| int offset, int depth, int indent, int dump); |
| static int asn1_print_info(BIO *bp, int tag, int xclass, int constructed, |
| int indent) |
| { |
| static const char fmt[] = "%-18s"; |
| char str[128]; |
| const char *p; |
| |
| if (constructed & V_ASN1_CONSTRUCTED) |
| p = "cons: "; |
| else |
| p = "prim: "; |
| if (BIO_write(bp, p, 6) < 6) |
| goto err; |
| BIO_indent(bp, indent, 128); |
| |
| p = str; |
| if ((xclass & V_ASN1_PRIVATE) == V_ASN1_PRIVATE) |
| BIO_snprintf(str, sizeof str, "priv [ %d ] ", tag); |
| else if ((xclass & V_ASN1_CONTEXT_SPECIFIC) == V_ASN1_CONTEXT_SPECIFIC) |
| BIO_snprintf(str, sizeof str, "cont [ %d ]", tag); |
| else if ((xclass & V_ASN1_APPLICATION) == V_ASN1_APPLICATION) |
| BIO_snprintf(str, sizeof str, "appl [ %d ]", tag); |
| else if (tag > 30) |
| BIO_snprintf(str, sizeof str, "<ASN1 %d>", tag); |
| else |
| p = ASN1_tag2str(tag); |
| |
| if (BIO_printf(bp, fmt, p) <= 0) |
| goto err; |
| return (1); |
| err: |
| return (0); |
| } |
| |
| int ASN1_parse(BIO *bp, const unsigned char *pp, long len, int indent) |
| { |
| return (asn1_parse2(bp, &pp, len, 0, 0, indent, 0)); |
| } |
| |
| int ASN1_parse_dump(BIO *bp, const unsigned char *pp, long len, int indent, |
| int dump) |
| { |
| return (asn1_parse2(bp, &pp, len, 0, 0, indent, dump)); |
| } |
| |
| static int asn1_parse2(BIO *bp, const unsigned char **pp, long length, |
| int offset, int depth, int indent, int dump) |
| { |
| const unsigned char *p, *ep, *tot, *op, *opp; |
| long len; |
| int tag, xclass, ret = 0; |
| int nl, hl, j, r; |
| ASN1_OBJECT *o = NULL; |
| ASN1_OCTET_STRING *os = NULL; |
| /* ASN1_BMPSTRING *bmp=NULL; */ |
| int dump_indent; |
| |
| #if 0 |
| dump_indent = indent; |
| #else |
| dump_indent = 6; /* Because we know BIO_dump_indent() */ |
| #endif |
| |
| if (depth > ASN1_PARSE_MAXDEPTH) { |
| BIO_puts(bp, "BAD RECURSION DEPTH\n"); |
| return 0; |
| } |
| |
| p = *pp; |
| tot = p + length; |
| op = p - 1; |
| while ((p < tot) && (op < p)) { |
| op = p; |
| j = ASN1_get_object(&p, &len, &tag, &xclass, length); |
| #ifdef LINT |
| j = j; |
| #endif |
| if (j & 0x80) { |
| if (BIO_puts(bp, "Error in encoding\n") <= 0) |
| goto end; |
| ret = 0; |
| goto end; |
| } |
| hl = (p - op); |
| length -= hl; |
| /* |
| * if j == 0x21 it is a constructed indefinite length object |
| */ |
| if (BIO_printf(bp, "%5ld:", (long)offset + (long)(op - *pp)) |
| <= 0) |
| goto end; |
| |
| if (j != (V_ASN1_CONSTRUCTED | 1)) { |
| if (BIO_printf(bp, "d=%-2d hl=%ld l=%4ld ", |
| depth, (long)hl, len) <= 0) |
| goto end; |
| } else { |
| if (BIO_printf(bp, "d=%-2d hl=%ld l=inf ", depth, (long)hl) <= 0) |
| goto end; |
| } |
| if (!asn1_print_info(bp, tag, xclass, j, (indent) ? depth : 0)) |
| goto end; |
| if (j & V_ASN1_CONSTRUCTED) { |
| ep = p + len; |
| if (BIO_puts(bp, "\n") <= 0) |
| goto end; |
| if (len > length) { |
| BIO_printf(bp, "length is greater than %ld\n", length); |
| ret = 0; |
| goto end; |
| } |
| if ((j == 0x21) && (len == 0)) { |
| for (;;) { |
| r = asn1_parse2(bp, &p, (long)(tot - p), |
| offset + (p - *pp), depth + 1, |
| indent, dump); |
| if (r == 0) { |
| ret = 0; |
| goto end; |
| } |
| if ((r == 2) || (p >= tot)) |
| break; |
| } |
| } else |
| while (p < ep) { |
| r = asn1_parse2(bp, &p, (long)len, |
| offset + (p - *pp), depth + 1, |
| indent, dump); |
| if (r == 0) { |
| ret = 0; |
| goto end; |
| } |
| } |
| } else if (xclass != 0) { |
| p += len; |
| if (BIO_puts(bp, "\n") <= 0) |
| goto end; |
| } else { |
| nl = 0; |
| if ((tag == V_ASN1_PRINTABLESTRING) || |
| (tag == V_ASN1_T61STRING) || |
| (tag == V_ASN1_IA5STRING) || |
| (tag == V_ASN1_VISIBLESTRING) || |
| (tag == V_ASN1_NUMERICSTRING) || |
| (tag == V_ASN1_UTF8STRING) || |
| (tag == V_ASN1_UTCTIME) || (tag == V_ASN1_GENERALIZEDTIME)) { |
| if (BIO_puts(bp, ":") <= 0) |
| goto end; |
| if ((len > 0) && BIO_write(bp, (const char *)p, (int)len) |
| != (int)len) |
| goto end; |
| } else if (tag == V_ASN1_OBJECT) { |
| opp = op; |
| if (d2i_ASN1_OBJECT(&o, &opp, len + hl) != NULL) { |
| if (BIO_puts(bp, ":") <= 0) |
| goto end; |
| i2a_ASN1_OBJECT(bp, o); |
| } else { |
| if (BIO_puts(bp, ":BAD OBJECT") <= 0) |
| goto end; |
| } |
| } else if (tag == V_ASN1_BOOLEAN) { |
| int ii; |
| |
| opp = op; |
| ii = d2i_ASN1_BOOLEAN(NULL, &opp, len + hl); |
| if (ii < 0) { |
| if (BIO_puts(bp, "Bad boolean\n") <= 0) |
| goto end; |
| } |
| BIO_printf(bp, ":%d", ii); |
| } else if (tag == V_ASN1_BMPSTRING) { |
| /* do the BMP thang */ |
| } else if (tag == V_ASN1_OCTET_STRING) { |
| int i, printable = 1; |
| |
| opp = op; |
| os = d2i_ASN1_OCTET_STRING(NULL, &opp, len + hl); |
| if (os != NULL && os->length > 0) { |
| opp = os->data; |
| /* |
| * testing whether the octet string is printable |
| */ |
| for (i = 0; i < os->length; i++) { |
| if (((opp[i] < ' ') && |
| (opp[i] != '\n') && |
| (opp[i] != '\r') && |
| (opp[i] != '\t')) || (opp[i] > '~')) { |
| printable = 0; |
| break; |
| } |
| } |
| if (printable) |
| /* printable string */ |
| { |
| if (BIO_puts(bp, ":") <= 0) |
| goto end; |
| if (BIO_write(bp, (const char *)opp, os->length) <= 0) |
| goto end; |
| } else if (!dump) |
| /* |
| * not printable => print octet string as hex dump |
| */ |
| { |
| if (BIO_puts(bp, "[HEX DUMP]:") <= 0) |
| goto end; |
| for (i = 0; i < os->length; i++) { |
| if (BIO_printf(bp, "%02X", opp[i]) <= 0) |
| goto end; |
| } |
| } else |
| /* print the normal dump */ |
| { |
| if (!nl) { |
| if (BIO_puts(bp, "\n") <= 0) |
| goto end; |
| } |
| if (!BIO_hexdump(bp, opp, |
| ((dump == -1 || dump > |
| os->length) ? os->length : dump), |
| dump_indent)) |
| goto end; |
| nl = 1; |
| } |
| } |
| if (os != NULL) { |
| M_ASN1_OCTET_STRING_free(os); |
| os = NULL; |
| } |
| } else if (tag == V_ASN1_INTEGER) { |
| ASN1_INTEGER *bs; |
| int i; |
| |
| opp = op; |
| bs = d2i_ASN1_INTEGER(NULL, &opp, len + hl); |
| if (bs != NULL) { |
| if (BIO_puts(bp, ":") <= 0) |
| goto end; |
| if (bs->type == V_ASN1_NEG_INTEGER) |
| if (BIO_puts(bp, "-") <= 0) |
| goto end; |
| for (i = 0; i < bs->length; i++) { |
| if (BIO_printf(bp, "%02X", bs->data[i]) <= 0) |
| goto end; |
| } |
| if (bs->length == 0) { |
| if (BIO_puts(bp, "00") <= 0) |
| goto end; |
| } |
| } else { |
| if (BIO_puts(bp, "BAD INTEGER") <= 0) |
| goto end; |
| } |
| M_ASN1_INTEGER_free(bs); |
| } else if (tag == V_ASN1_ENUMERATED) { |
| ASN1_ENUMERATED *bs; |
| int i; |
| |
| opp = op; |
| bs = d2i_ASN1_ENUMERATED(NULL, &opp, len + hl); |
| if (bs != NULL) { |
| if (BIO_puts(bp, ":") <= 0) |
| goto end; |
| if (bs->type == V_ASN1_NEG_ENUMERATED) |
| if (BIO_puts(bp, "-") <= 0) |
| goto end; |
| for (i = 0; i < bs->length; i++) { |
| if (BIO_printf(bp, "%02X", bs->data[i]) <= 0) |
| goto end; |
| } |
| if (bs->length == 0) { |
| if (BIO_puts(bp, "00") <= 0) |
| goto end; |
| } |
| } else { |
| if (BIO_puts(bp, "BAD ENUMERATED") <= 0) |
| goto end; |
| } |
| M_ASN1_ENUMERATED_free(bs); |
| } else if (len > 0 && dump) { |
| if (!nl) { |
| if (BIO_puts(bp, "\n") <= 0) |
| goto end; |
| } |
| if (!BIO_hexdump(bp, p, |
| ((dump == -1 || dump > len) ? len : dump), |
| dump_indent)) |
| goto end; |
| nl = 1; |
| } |
| |
| if (!nl) { |
| if (BIO_puts(bp, "\n") <= 0) |
| goto end; |
| } |
| p += len; |
| if ((tag == V_ASN1_EOC) && (xclass == 0)) { |
| ret = 2; /* End of sequence */ |
| goto end; |
| } |
| } |
| length -= len; |
| } |
| ret = 1; |
| end: |
| if (o != NULL) |
| ASN1_OBJECT_free(o); |
| if (os != NULL) |
| M_ASN1_OCTET_STRING_free(os); |
| *pp = p; |
| return (ret); |
| } |
| |
| const char *ASN1_tag2str(int tag) |
| { |
| static const char *const tag2str[] = { |
| "EOC", "BOOLEAN", "INTEGER", "BIT STRING", "OCTET STRING", /* 0-4 */ |
| "NULL", "OBJECT", "OBJECT DESCRIPTOR", "EXTERNAL", "REAL", /* 5-9 */ |
| "ENUMERATED", "<ASN1 11>", "UTF8STRING", "<ASN1 13>", /* 10-13 */ |
| "<ASN1 14>", "<ASN1 15>", "SEQUENCE", "SET", /* 15-17 */ |
| "NUMERICSTRING", "PRINTABLESTRING", "T61STRING", /* 18-20 */ |
| "VIDEOTEXSTRING", "IA5STRING", "UTCTIME", "GENERALIZEDTIME", /* 21-24 |
| */ |
| "GRAPHICSTRING", "VISIBLESTRING", "GENERALSTRING", /* 25-27 */ |
| "UNIVERSALSTRING", "<ASN1 29>", "BMPSTRING" /* 28-30 */ |
| }; |
| |
| if ((tag == V_ASN1_NEG_INTEGER) || (tag == V_ASN1_NEG_ENUMERATED)) |
| tag &= ~0x100; |
| |
| if (tag < 0 || tag > 30) |
| return "(unknown)"; |
| return tag2str[tag]; |
| } |
