-/* a_mbstr.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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).
+/*
+ * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <stdio.h>
-#include "cryptlib.h"
+#include <ctype.h>
+#include "internal/cryptlib.h"
#include <openssl/asn1.h>
-static int traverse_string(unsigned char *p, int len, int inform,
- int (*rfunc)(unsigned long value, void *in), void *arg);
+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_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_numeric(unsigned long value);
static int is_printable(unsigned long value);
-/* This function takes 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 :-(
+/*
+ * 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 Numeric < 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, unsigned char *in, int len,
- int inform, unsigned long mask)
+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;
- int outform, outlen;
- ASN1_STRING *dest;
- unsigned char *p;
- int nchar;
- int (*cpyfunc)(unsigned long value, void *in_) = NULL;
- if(len == -1) len = strlen((const char *)in);
-
- /* 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_COPY,
- ASN1_R_INVALID_BMPSTRING_LENGTH);
- return -1;
- }
- nchar = len >> 1;
- break;
-
- case MBSTRING_UNIV:
- if(len & 3) {
- ASN1err(ASN1_F_ASN1_MBSTRING_COPY,
- ASN1_R_INVALID_UNIVERSALSTRING_LENGTH);
- return -1;
- }
- nchar = len >> 2;
- break;
-
- case MBSTRING_UTF8:
- nchar = 0;
- ret = traverse_string(in, len, MBSTRING_UTF8, in_utf8, &nchar);
- if(ret < 0) {
- ASN1err(ASN1_F_ASN1_MBSTRING_COPY,
- ASN1_R_INVALID_UTF8STRING);
- return -1;
- }
- break;
-
- case MBSTRING_ASC:
- nchar = len;
- break;
-
- default:
- ASN1err(ASN1_F_ASN1_MBSTRING_COPY, ASN1_R_UNKNOWN_FORMAT);
- return -1;
- }
-
- /* Now work out minimal type (if any) */
- if(traverse_string(in, len, inform, type_str, &mask) < 0) {
- ASN1err(ASN1_F_ASN1_MBSTRING_COPY, 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(!(dest = ASN1_STRING_type_new(str_type))) {
- ASN1err(ASN1_F_ASN1_MBSTRING_COPY, 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)) {
- ASN1_STRING_free(dest);
- ASN1err(ASN1_F_ASN1_MBSTRING_COPY,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 = Malloc(outlen + 1))) {
- ASN1_STRING_free(dest);
- ASN1err(ASN1_F_ASN1_MBSTRING_COPY,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;
+ 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_NUMERICSTRING)
+ str_type = V_ASN1_NUMERICSTRING;
+ else 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;
+ OPENSSL_free(dest->data);
+ dest->data = NULL;
+ dest->length = 0;
+ dest->type = str_type;
+ } else {
+ free_out = 1;
+ dest = ASN1_STRING_type_new(str_type);
+ if (dest == NULL) {
+ 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)) == NULL) {
+ 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.
+/*
+ * 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(unsigned char *p, int len, int inform,
- int (*rfunc)(unsigned long value, void *in), void *arg)
+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 = *p++ << 24;
- value |= *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;
+ 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 */
static int in_utf8(unsigned long value, void *arg)
{
- int *nchar;
- nchar = arg;
- (*nchar)++;
- return 1;
+ int *nchar;
+ nchar = arg;
+ (*nchar)++;
+ return 1;
}
/* Determine size of output as a UTF8 String */
static int out_utf8(unsigned long value, void *arg)
{
- long *outlen;
- outlen = arg;
- *outlen += UTF8_putc(NULL, -1, value);
- return 1;
+ 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".
+/*
+ * 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;
+ unsigned long types;
+ types = *((unsigned long *)arg);
+ if ((types & B_ASN1_NUMERICSTRING) && !is_numeric(value))
+ types &= ~B_ASN1_NUMERICSTRING;
+ 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;
+ 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;
+ 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;
+ 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;
+ 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.
- */
- 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;
- return 0;
+ 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;
+}
+
+/* Return 1 if the character is a digit or space */
+static int is_numeric(unsigned long value)
+{
+ int ch;
+ if (value > 0x7f)
+ return 0;
+ ch = (int)value;
+#ifndef CHARSET_EBCDIC
+ if (!isdigit(ch) && ch != ' ')
+ return 0;
+#else
+ if (ch > os_toascii['9'])
+ return 0;
+ if (ch < os_toascii['0'] && ch != os_toascii[' '])
+ return 0;
+#endif
+ return 1;
}
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