--- /dev/null
+/* a_mbstr.c */
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
+ * project 1999.
+ */
+/* ====================================================================
+ * Copyright (c) 1999 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
+ * 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 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 <ctype.h>
+#include "cryptlib.h"
+#include <openssl/asn1.h>
+
+static int traverse_string(const unsigned char *p, int len, int inform,
+ int (*rfunc)(unsigned long value, void *in), void *arg);
+static int in_utf8(unsigned long value, void *arg);
+static int out_utf8(unsigned long value, void *arg);
+static int type_str(unsigned long value, void *arg);
+static int cpy_asc(unsigned long value, void *arg);
+static int cpy_bmp(unsigned long value, void *arg);
+static int cpy_univ(unsigned long value, void *arg);
+static int cpy_utf8(unsigned long value, void *arg);
+static int is_printable(unsigned long value);
+
+/* These functions take a string in UTF8, ASCII or multibyte form and
+ * a mask of permissible ASN1 string types. It then works out the minimal
+ * type (using the order Printable < IA5 < T61 < BMP < Universal < UTF8)
+ * and creates a string of the correct type with the supplied data.
+ * Yes this is horrible: it has to be :-(
+ * The 'ncopy' form checks minimum and maximum size limits too.
+ */
+
+int ASN1_mbstring_copy(ASN1_STRING **out, const unsigned char *in, int len,
+ int inform, unsigned long mask)
+{
+ return ASN1_mbstring_ncopy(out, in, len, inform, mask, 0, 0);
+}
+
+int ASN1_mbstring_ncopy(ASN1_STRING **out, const unsigned char *in, int len,
+ int inform, unsigned long mask,
+ long minsize, long maxsize)
+{
+ int str_type;
+ int ret;
+ char free_out;
+ int outform, outlen = 0;
+ ASN1_STRING *dest;
+ unsigned char *p;
+ int nchar;
+ char strbuf[32];
+ int (*cpyfunc)(unsigned long,void *) = NULL;
+ if(len == -1) len = strlen((const char *)in);
+ if(!mask) mask = DIRSTRING_TYPE;
+
+ /* First do a string check and work out the number of characters */
+ switch(inform) {
+
+ case MBSTRING_BMP:
+ if(len & 1) {
+ ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,
+ ASN1_R_INVALID_BMPSTRING_LENGTH);
+ return -1;
+ }
+ nchar = len >> 1;
+ break;
+
+ case MBSTRING_UNIV:
+ if(len & 3) {
+ ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,
+ ASN1_R_INVALID_UNIVERSALSTRING_LENGTH);
+ return -1;
+ }
+ nchar = len >> 2;
+ break;
+
+ case MBSTRING_UTF8:
+ nchar = 0;
+ /* This counts the characters and does utf8 syntax checking */
+ ret = traverse_string(in, len, MBSTRING_UTF8, in_utf8, &nchar);
+ if(ret < 0) {
+ ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,
+ ASN1_R_INVALID_UTF8STRING);
+ return -1;
+ }
+ break;
+
+ case MBSTRING_ASC:
+ nchar = len;
+ break;
+
+ default:
+ ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY, ASN1_R_UNKNOWN_FORMAT);
+ return -1;
+ }
+
+ if((minsize > 0) && (nchar < minsize)) {
+ ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY, ASN1_R_STRING_TOO_SHORT);
+ BIO_snprintf(strbuf, sizeof strbuf, "%ld", minsize);
+ ERR_add_error_data(2, "minsize=", strbuf);
+ return -1;
+ }
+
+ if((maxsize > 0) && (nchar > maxsize)) {
+ ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY, ASN1_R_STRING_TOO_LONG);
+ BIO_snprintf(strbuf, sizeof strbuf, "%ld", maxsize);
+ ERR_add_error_data(2, "maxsize=", strbuf);
+ return -1;
+ }
+
+ /* Now work out minimal type (if any) */
+ if(traverse_string(in, len, inform, type_str, &mask) < 0) {
+ ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY, ASN1_R_ILLEGAL_CHARACTERS);
+ return -1;
+ }
+
+
+ /* Now work out output format and string type */
+ outform = MBSTRING_ASC;
+ if(mask & B_ASN1_PRINTABLESTRING) str_type = V_ASN1_PRINTABLESTRING;
+ else if(mask & B_ASN1_IA5STRING) str_type = V_ASN1_IA5STRING;
+ else if(mask & B_ASN1_T61STRING) str_type = V_ASN1_T61STRING;
+ else if(mask & B_ASN1_BMPSTRING) {
+ str_type = V_ASN1_BMPSTRING;
+ outform = MBSTRING_BMP;
+ } else if(mask & B_ASN1_UNIVERSALSTRING) {
+ str_type = V_ASN1_UNIVERSALSTRING;
+ outform = MBSTRING_UNIV;
+ } else {
+ str_type = V_ASN1_UTF8STRING;
+ outform = MBSTRING_UTF8;
+ }
+ if(!out) return str_type;
+ if(*out) {
+ free_out = 0;
+ dest = *out;
+ if(dest->data) {
+ dest->length = 0;
+ OPENSSL_free(dest->data);
+ dest->data = NULL;
+ }
+ dest->type = str_type;
+ } else {
+ free_out = 1;
+ dest = ASN1_STRING_type_new(str_type);
+ if(!dest) {
+ ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,
+ ERR_R_MALLOC_FAILURE);
+ return -1;
+ }
+ *out = dest;
+ }
+ /* If both the same type just copy across */
+ if(inform == outform) {
+ if(!ASN1_STRING_set(dest, in, len)) {
+ ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,ERR_R_MALLOC_FAILURE);
+ return -1;
+ }
+ return str_type;
+ }
+
+ /* Work out how much space the destination will need */
+ switch(outform) {
+ case MBSTRING_ASC:
+ outlen = nchar;
+ cpyfunc = cpy_asc;
+ break;
+
+ case MBSTRING_BMP:
+ outlen = nchar << 1;
+ cpyfunc = cpy_bmp;
+ break;
+
+ case MBSTRING_UNIV:
+ outlen = nchar << 2;
+ cpyfunc = cpy_univ;
+ break;
+
+ case MBSTRING_UTF8:
+ outlen = 0;
+ traverse_string(in, len, inform, out_utf8, &outlen);
+ cpyfunc = cpy_utf8;
+ break;
+ }
+ if(!(p = OPENSSL_malloc(outlen + 1))) {
+ if(free_out) ASN1_STRING_free(dest);
+ ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,ERR_R_MALLOC_FAILURE);
+ return -1;
+ }
+ dest->length = outlen;
+ dest->data = p;
+ p[outlen] = 0;
+ traverse_string(in, len, inform, cpyfunc, &p);
+ return str_type;
+}
+
+/* This function traverses a string and passes the value of each character
+ * to an optional function along with a void * argument.
+ */
+
+static int traverse_string(const unsigned char *p, int len, int inform,
+ int (*rfunc)(unsigned long value, void *in), void *arg)
+{
+ unsigned long value;
+ int ret;
+ while(len) {
+ if(inform == MBSTRING_ASC) {
+ value = *p++;
+ len--;
+ } else if(inform == MBSTRING_BMP) {
+ value = *p++ << 8;
+ value |= *p++;
+ len -= 2;
+ } else if(inform == MBSTRING_UNIV) {
+ value = ((unsigned long)*p++) << 24;
+ value |= ((unsigned long)*p++) << 16;
+ value |= *p++ << 8;
+ value |= *p++;
+ len -= 4;
+ } else {
+ ret = UTF8_getc(p, len, &value);
+ if(ret < 0) return -1;
+ len -= ret;
+ p += ret;
+ }
+ if(rfunc) {
+ ret = rfunc(value, arg);
+ if(ret <= 0) return ret;
+ }
+ }
+ return 1;
+}
+
+/* Various utility functions for traverse_string */
+
+/* Just count number of characters */
+
+static int in_utf8(unsigned long value, void *arg)
+{
+ int *nchar;
+ nchar = arg;
+ (*nchar)++;
+ return 1;
+}
+
+/* Determine size of output as a UTF8 String */
+
+static int out_utf8(unsigned long value, void *arg)
+{
+ int *outlen;
+ outlen = arg;
+ *outlen += UTF8_putc(NULL, -1, value);
+ return 1;
+}
+
+/* Determine the "type" of a string: check each character against a
+ * supplied "mask".
+ */
+
+static int type_str(unsigned long value, void *arg)
+{
+ unsigned long types;
+ types = *((unsigned long *)arg);
+ if((types & B_ASN1_PRINTABLESTRING) && !is_printable(value))
+ types &= ~B_ASN1_PRINTABLESTRING;
+ if((types & B_ASN1_IA5STRING) && (value > 127))
+ types &= ~B_ASN1_IA5STRING;
+ if((types & B_ASN1_T61STRING) && (value > 0xff))
+ types &= ~B_ASN1_T61STRING;
+ if((types & B_ASN1_BMPSTRING) && (value > 0xffff))
+ types &= ~B_ASN1_BMPSTRING;
+ if(!types) return -1;
+ *((unsigned long *)arg) = types;
+ return 1;
+}
+
+/* Copy one byte per character ASCII like strings */
+
+static int cpy_asc(unsigned long value, void *arg)
+{
+ unsigned char **p, *q;
+ p = arg;
+ q = *p;
+ *q = (unsigned char) value;
+ (*p)++;
+ return 1;
+}
+
+/* Copy two byte per character BMPStrings */
+
+static int cpy_bmp(unsigned long value, void *arg)
+{
+ unsigned char **p, *q;
+ p = arg;
+ q = *p;
+ *q++ = (unsigned char) ((value >> 8) & 0xff);
+ *q = (unsigned char) (value & 0xff);
+ *p += 2;
+ return 1;
+}
+
+/* Copy four byte per character UniversalStrings */
+
+static int cpy_univ(unsigned long value, void *arg)
+{
+ unsigned char **p, *q;
+ p = arg;
+ q = *p;
+ *q++ = (unsigned char) ((value >> 24) & 0xff);
+ *q++ = (unsigned char) ((value >> 16) & 0xff);
+ *q++ = (unsigned char) ((value >> 8) & 0xff);
+ *q = (unsigned char) (value & 0xff);
+ *p += 4;
+ return 1;
+}
+
+/* Copy to a UTF8String */
+
+static int cpy_utf8(unsigned long value, void *arg)
+{
+ unsigned char **p;
+ int ret;
+ p = arg;
+ /* We already know there is enough room so pass 0xff as the length */
+ ret = UTF8_putc(*p, 0xff, value);
+ *p += ret;
+ return 1;
+}
+
+/* Return 1 if the character is permitted in a PrintableString */
+static int is_printable(unsigned long value)
+{
+ int ch;
+ if(value > 0x7f) return 0;
+ ch = (int) value;
+ /* Note: we can't use 'isalnum' because certain accented
+ * characters may count as alphanumeric in some environments.
+ */
+#ifndef CHARSET_EBCDIC
+ if((ch >= 'a') && (ch <= 'z')) return 1;
+ if((ch >= 'A') && (ch <= 'Z')) return 1;
+ if((ch >= '0') && (ch <= '9')) return 1;
+ if ((ch == ' ') || strchr("'()+,-./:=?", ch)) return 1;
+#else /*CHARSET_EBCDIC*/
+ if((ch >= os_toascii['a']) && (ch <= os_toascii['z'])) return 1;
+ if((ch >= os_toascii['A']) && (ch <= os_toascii['Z'])) return 1;
+ if((ch >= os_toascii['0']) && (ch <= os_toascii['9'])) return 1;
+ if ((ch == os_toascii[' ']) || strchr("'()+,-./:=?", os_toebcdic[ch])) return 1;
+#endif /*CHARSET_EBCDIC*/
+ return 0;
+}
projects / cassiopeia.git / blobdiff