--- /dev/null
+/* crypto/asn1/a_utf8.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.]
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/asn1.h>
+
+
+/* UTF8 utilities */
+
+/* This parses a UTF8 string one character at a time. It is passed a pointer
+ * to the string and the length of the string. It sets 'value' to the value of
+ * the current character. It returns the number of characters read or a
+ * negative error code:
+ * -1 = string too short
+ * -2 = illegal character
+ * -3 = subsequent characters not of the form 10xxxxxx
+ * -4 = character encoded incorrectly (not minimal length).
+ */
+
+int UTF8_getc(const unsigned char *str, int len, unsigned long *val)
+{
+ const unsigned char *p;
+ unsigned long value;
+ int ret;
+ if(len <= 0) return 0;
+ p = str;
+
+ /* Check syntax and work out the encoded value (if correct) */
+ if((*p & 0x80) == 0) {
+ value = *p++ & 0x7f;
+ ret = 1;
+ } else if((*p & 0xe0) == 0xc0) {
+ if(len < 2) return -1;
+ if((p[1] & 0xc0) != 0x80) return -3;
+ value = (*p++ & 0x1f) << 6;
+ value |= *p++ & 0x3f;
+ if(value < 0x80) return -4;
+ ret = 2;
+ } else if((*p & 0xf0) == 0xe0) {
+ if(len < 3) return -1;
+ if( ((p[1] & 0xc0) != 0x80)
+ || ((p[2] & 0xc0) != 0x80) ) return -3;
+ value = (*p++ & 0xf) << 12;
+ value |= (*p++ & 0x3f) << 6;
+ value |= *p++ & 0x3f;
+ if(value < 0x800) return -4;
+ ret = 3;
+ } else if((*p & 0xf8) == 0xf0) {
+ if(len < 4) return -1;
+ if( ((p[1] & 0xc0) != 0x80)
+ || ((p[2] & 0xc0) != 0x80)
+ || ((p[3] & 0xc0) != 0x80) ) return -3;
+ value = ((unsigned long)(*p++ & 0x7)) << 18;
+ value |= (*p++ & 0x3f) << 12;
+ value |= (*p++ & 0x3f) << 6;
+ value |= *p++ & 0x3f;
+ if(value < 0x10000) return -4;
+ ret = 4;
+ } else if((*p & 0xfc) == 0xf8) {
+ if(len < 5) return -1;
+ if( ((p[1] & 0xc0) != 0x80)
+ || ((p[2] & 0xc0) != 0x80)
+ || ((p[3] & 0xc0) != 0x80)
+ || ((p[4] & 0xc0) != 0x80) ) return -3;
+ value = ((unsigned long)(*p++ & 0x3)) << 24;
+ value |= ((unsigned long)(*p++ & 0x3f)) << 18;
+ value |= ((unsigned long)(*p++ & 0x3f)) << 12;
+ value |= (*p++ & 0x3f) << 6;
+ value |= *p++ & 0x3f;
+ if(value < 0x200000) return -4;
+ ret = 5;
+ } else if((*p & 0xfe) == 0xfc) {
+ if(len < 6) return -1;
+ if( ((p[1] & 0xc0) != 0x80)
+ || ((p[2] & 0xc0) != 0x80)
+ || ((p[3] & 0xc0) != 0x80)
+ || ((p[4] & 0xc0) != 0x80)
+ || ((p[5] & 0xc0) != 0x80) ) return -3;
+ value = ((unsigned long)(*p++ & 0x1)) << 30;
+ value |= ((unsigned long)(*p++ & 0x3f)) << 24;
+ value |= ((unsigned long)(*p++ & 0x3f)) << 18;
+ value |= ((unsigned long)(*p++ & 0x3f)) << 12;
+ value |= (*p++ & 0x3f) << 6;
+ value |= *p++ & 0x3f;
+ if(value < 0x4000000) return -4;
+ ret = 6;
+ } else return -2;
+ *val = value;
+ return ret;
+}
+
+/* This takes a character 'value' and writes the UTF8 encoded value in
+ * 'str' where 'str' is a buffer containing 'len' characters. Returns
+ * the number of characters written or -1 if 'len' is too small. 'str' can
+ * be set to NULL in which case it just returns the number of characters.
+ * It will need at most 6 characters.
+ */
+
+int UTF8_putc(unsigned char *str, int len, unsigned long value)
+{
+ if(!str) len = 6; /* Maximum we will need */
+ else if(len <= 0) return -1;
+ if(value < 0x80) {
+ if(str) *str = (unsigned char)value;
+ return 1;
+ }
+ if(value < 0x800) {
+ if(len < 2) return -1;
+ if(str) {
+ *str++ = (unsigned char)(((value >> 6) & 0x1f) | 0xc0);
+ *str = (unsigned char)((value & 0x3f) | 0x80);
+ }
+ return 2;
+ }
+ if(value < 0x10000) {
+ if(len < 3) return -1;
+ if(str) {
+ *str++ = (unsigned char)(((value >> 12) & 0xf) | 0xe0);
+ *str++ = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
+ *str = (unsigned char)((value & 0x3f) | 0x80);
+ }
+ return 3;
+ }
+ if(value < 0x200000) {
+ if(len < 4) return -1;
+ if(str) {
+ *str++ = (unsigned char)(((value >> 18) & 0x7) | 0xf0);
+ *str++ = (unsigned char)(((value >> 12) & 0x3f) | 0x80);
+ *str++ = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
+ *str = (unsigned char)((value & 0x3f) | 0x80);
+ }
+ return 4;
+ }
+ if(value < 0x4000000) {
+ if(len < 5) return -1;
+ if(str) {
+ *str++ = (unsigned char)(((value >> 24) & 0x3) | 0xf8);
+ *str++ = (unsigned char)(((value >> 18) & 0x3f) | 0x80);
+ *str++ = (unsigned char)(((value >> 12) & 0x3f) | 0x80);
+ *str++ = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
+ *str = (unsigned char)((value & 0x3f) | 0x80);
+ }
+ return 5;
+ }
+ if(len < 6) return -1;
+ if(str) {
+ *str++ = (unsigned char)(((value >> 30) & 0x1) | 0xfc);
+ *str++ = (unsigned char)(((value >> 24) & 0x3f) | 0x80);
+ *str++ = (unsigned char)(((value >> 18) & 0x3f) | 0x80);
+ *str++ = (unsigned char)(((value >> 12) & 0x3f) | 0x80);
+ *str++ = (unsigned char)(((value >> 6) & 0x3f) | 0x80);
+ *str = (unsigned char)((value & 0x3f) | 0x80);
+ }
+ return 6;
+}
projects / cassiopeia.git / blobdiff