a_strex.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/* a_strex.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
* project 2000.
*/
/* ====================================================================
* Copyright (c) 2000 The OpenSSL Project. All rights reserved.
*
* 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 above 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
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED 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 OpenSSL PROJECT OR
* ITS 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.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#include <stdio.h>
#include <string.h>
#include "charmap.h"
#include "cryptlib.h"
/* ASN1_STRING_print_ex() and X509_NAME_print_ex().
* Enhanced string and name printing routines handling
* multibyte characters, RFC2253 and a host of other
* options.
*/
/* Three IO functions for sending data to memory, a BIO and
* and a FILE pointer.
*/
#if 0 /* never used */
{
if(!out) return 1;
return 1;
}
#endif
{
if(!arg) return 1;
return 1;
}
{
if(!arg) return 1;
return 1;
}
/* This function handles display of
* strings, one character at a time.
* It is passed an unsigned long for each
* character because it could come from 2 or even
* 4 byte forms.
*/
static int do_esc_char(unsigned long c, unsigned char flags, char *do_quotes, char_io *io_ch, void *arg)
{
if(c > 0xffffffffL)
return -1;
if(c > 0xffff) {
return 10;
}
if(c > 0xff) {
return 6;
}
chtmp = (unsigned char)c;
if(chflgs & CHARTYPE_BS_ESC) {
/* If we don't escape with quotes, signal we need quotes */
if(chflgs & ASN1_STRFLGS_ESC_QUOTE) {
return 1;
}
return 2;
}
return 3;
}
return 1;
}
#define BUF_TYPE_WIDTH_MASK 0x7
#define BUF_TYPE_CONVUTF8 0x8
/* This function sends each character in a buffer to
* do_esc_char(). It interprets the content formats
* and converts to or from UTF8 as appropriate.
*/
{
unsigned char orflags, *p, *q;
unsigned long c;
p = buf;
outlen = 0;
while(p != q) {
else orflags = 0;
switch(type & BUF_TYPE_WIDTH_MASK) {
case 4:
c = ((unsigned long)*p++) << 24;
c |= ((unsigned long)*p++) << 16;
c |= ((unsigned long)*p++) << 8;
c |= *p++;
break;
case 2:
c = ((unsigned long)*p++) << 8;
c |= *p++;
break;
case 1:
c = *p++;
break;
case 0:
if(i < 0) return -1; /* Invalid UTF8String */
p += i;
break;
}
if (p == q) orflags = CHARTYPE_LAST_ESC_2253;
if(type & BUF_TYPE_CONVUTF8) {
unsigned char utfbuf[6];
int utflen;
for(i = 0; i < utflen; i++) {
/* We don't need to worry about setting orflags correctly
* because if utflen==1 its value will be correct anyway
* otherwise each character will be > 0x7f and so the
* character will never be escaped on first and last.
*/
if(len < 0) return -1;
}
} else {
if(len < 0) return -1;
}
}
return outlen;
}
/* This function hex dumps a buffer of characters */
{
const static char hexdig[] = "0123456789ABCDEF";
unsigned char *p, *q;
char hextmp[2];
if(arg) {
p = buf;
while(p != q) {
p++;
}
}
return buflen << 1;
}
/* "dump" a string. This is done when the type is unknown,
* or the flags request it. We can either dump the content
* octets or the entire DER encoding. This uses the RFC2253
* #01234 format.
*/
{
/* Placing the ASN1_STRING in a temp ASN1_TYPE allows
* the DER encoding to readily obtained
*/
ASN1_TYPE t;
unsigned char *der_buf, *p;
/* If we don't dump DER encoding just dump content octets */
if(!(lflags & ASN1_STRFLGS_DUMP_DER)) {
if(outlen < 0) return -1;
return outlen + 1;
}
if(!der_buf) return -1;
p = der_buf;
i2d_ASN1_TYPE(&t, &p);
if(outlen < 0) return -1;
return outlen + 1;
}
/* Lookup table to convert tags to character widths,
* 0 = UTF8 encoded, -1 is used for non string types
* otherwise it is the number of bytes per character
*/
const static signed char tag2nbyte[] = {
-1, -1, -1, -1, -1, /* 0-4 */
-1, -1, -1, -1, -1, /* 5-9 */
-1, -1, 0, -1, /* 10-13 */
-1, -1, -1, -1, /* 15-17 */
-1, 1, 1, /* 18-20 */
-1, 1, 1, 1, /* 21-24 */
-1, 1, -1, /* 25-27 */
4, -1, 2 /* 28-30 */
};
#define ESC_FLAGS (ASN1_STRFLGS_ESC_2253 | \
/* This is the main function, print out an
* ASN1_STRING taking note of various escape
* and display options. Returns number of
* characters written or -1 if an error
* occurred.
*/
{
int type;
char quotes;
unsigned char flags;
quotes = 0;
/* Keep a copy of escape flags */
outlen = 0;
if(lflags & ASN1_STRFLGS_SHOW_TYPE) {
const char *tagname;
outlen++;
}
/* Decide what to do with type, either dump content or display it */
/* Dump everything */
/* Ignore the string type */
else {
/* Else determine width based on type */
else type = -1;
}
if(type == -1) {
if(len < 0) return -1;
return outlen;
}
if(lflags & ASN1_STRFLGS_UTF8_CONVERT) {
/* Note: if string is UTF8 and we want
* to convert to UTF8 then we just interpret
* it as 1 byte per character to avoid converting
* twice.
*/
else type |= BUF_TYPE_CONVUTF8;
}
if(outlen < 0) return -1;
return outlen;
}
/* Used for line indenting: print 'indent' spaces */
{
int i;
for(i = 0; i < indent; i++)
return 1;
}
#define FN_WIDTH_LN 25
#define FN_WIDTH_SN 10
{
char objtmp[80];
const char *objbuf;
switch (flags & XN_FLAG_SEP_MASK)
{
case XN_FLAG_SEP_MULTILINE:
sep_dn = "\n";
sep_dn_len = 1;
sep_mv = " + ";
sep_mv_len = 3;
break;
case XN_FLAG_SEP_COMMA_PLUS:
sep_dn = ",";
sep_dn_len = 1;
sep_mv = "+";
sep_mv_len = 1;
indent = 0;
break;
case XN_FLAG_SEP_CPLUS_SPC:
sep_dn = ", ";
sep_dn_len = 2;
sep_mv = " + ";
sep_mv_len = 3;
indent = 0;
break;
case XN_FLAG_SEP_SPLUS_SPC:
sep_dn = "; ";
sep_dn_len = 2;
sep_mv = " + ";
sep_mv_len = 3;
indent = 0;
break;
default:
return -1;
}
if(flags & XN_FLAG_SPC_EQ) {
sep_eq = " = ";
sep_eq_len = 3;
} else {
sep_eq = "=";
sep_eq_len = 1;
}
cnt = X509_NAME_entry_count(n);
for(i = 0; i < cnt; i++) {
if(flags & XN_FLAG_DN_REV)
else ent = X509_NAME_get_entry(n, i);
if(prev != -1) {
outlen += sep_mv_len;
} else {
outlen += sep_dn_len;
}
}
if(fn_opt != XN_FLAG_FN_NONE) {
fld_len = 0; /* XXX: what should this be? */
} else {
if(fn_opt == XN_FLAG_FN_SN) {
} else if(fn_opt == XN_FLAG_FN_LN) {
} else {
fld_len = 0; /* XXX: what should this be? */
objbuf = "";
}
}
}
}
/* If the field name is unknown then fix up the DER dump
* flag. We might want to limit this further so it will
* DER dump on anything other than a few 'standard' fields.
*/
else orflags = 0;
if(len < 0) return -1;
}
return outlen;
}
/* Wrappers round the main functions */
{
if(flags == XN_FLAG_COMPAT)
}
{
if(flags == XN_FLAG_COMPAT)
{
int ret;
if(!btmp) return -1;
return ret;
}
}
{
}
{
}
/* Utility function: convert any string type to UTF8, returns number of bytes
* in output string or a negative error code
*/
{
if(!in) return -1;
mbflag |= MBSTRING_FLAG;
}