#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);
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;
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;
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;
}
if(traverse_string(in, len, inform, type_str, &mask) < 0) {
ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY, ASN1_R_ILLEGAL_CHARACTERS);
return -1;
}
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(inform == outform) {
if(!ASN1_STRING_set(dest, in, len)) {
ASN1err(ASN1_F_ASN1_MBSTRING_NCOPY,ERR_R_MALLOC_FAILURE);
return -1;
}
return str_type;
}
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;
}
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;
}
static int in_utf8(unsigned long value, void *arg)
{
int *nchar;
nchar = arg;
(*nchar)++;
return 1;
}
static int out_utf8(unsigned long value, void *arg)
{
int *outlen;
outlen = arg;
*outlen += UTF8_putc(NULL, -1, value);
return 1;
}
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;
}
static int cpy_asc(unsigned long value, void *arg)
{
unsigned char **p, *q;
p = arg;
q = *p;
*q = (unsigned char) value;
(*p)++;
return 1;
}
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;
}
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;
}
static int cpy_utf8(unsigned long value, void *arg)
{
unsigned char **p;
int ret;
p = arg;
ret = UTF8_putc(*p, 0xff, value);
*p += ret;
return 1;
}
static int is_printable(unsigned long value)
{
int ch;
if(value > 0x7f) return 0;
ch = (int) value;
#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
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
return 0;
}