*/
#include "includes.h"
-RCSID("$OpenBSD: bufaux.c,v 1.25 2002/04/20 09:14:58 markus Exp $");
+RCSID("$OpenBSD: bufaux.c,v 1.28 2002/10/23 10:40:16 markus Exp $");
#include <openssl/bn.h>
#include "bufaux.h"
bits = GET_16BIT(buf);
/* Compute the number of binary bytes that follow. */
bytes = (bits + 7) / 8;
+ if (bytes > 8 * 1024)
+ fatal("buffer_get_bignum: cannot handle BN of size %d", bytes);
if (buffer_len(buffer) < bytes)
fatal("buffer_get_bignum: input buffer too small");
bin = buffer_ptr(buffer);
u_char *buf = xmalloc(bytes);
int oi;
int hasnohigh = 0;
+
buf[0] = '\0';
/* Get the value of in binary */
oi = BN_bn2bin(value, buf+1);
/**XXX should be two's-complement */
int i, carry;
u_char *uc = buf;
- log("negativ!");
+ logit("negativ!");
for (i = bytes-1, carry = 1; i>=0; i--) {
uc[i] ^= 0xff;
if (carry)
xfree(buf);
}
+/* XXX does not handle negative BNs */
void
buffer_get_bignum2(Buffer *buffer, BIGNUM *value)
{
- /**XXX should be two's-complement */
- int len;
- u_char *bin = buffer_get_string(buffer, (u_int *)&len);
+ u_int len;
+ u_char *bin = buffer_get_string(buffer, &len);
+
+ if (len > 8 * 1024)
+ fatal("buffer_get_bignum2: cannot handle BN of size %d", len);
BN_bin2bn(bin, len, value);
xfree(bin);
}
buffer_get_short(Buffer *buffer)
{
u_char buf[2];
+
buffer_get(buffer, (char *) buf, 2);
return GET_16BIT(buf);
}
buffer_get_int(Buffer *buffer)
{
u_char buf[4];
+
buffer_get(buffer, (char *) buf, 4);
return GET_32BIT(buf);
}
-#ifdef HAVE_U_INT64_T
u_int64_t
buffer_get_int64(Buffer *buffer)
{
u_char buf[8];
+
buffer_get(buffer, (char *) buf, 8);
return GET_64BIT(buf);
}
-#endif
/*
* Stores integers in the buffer, msb first.
buffer_put_short(Buffer *buffer, u_short value)
{
char buf[2];
+
PUT_16BIT(buf, value);
buffer_append(buffer, buf, 2);
}
buffer_put_int(Buffer *buffer, u_int value)
{
char buf[4];
+
PUT_32BIT(buf, value);
buffer_append(buffer, buf, 4);
}
-#ifdef HAVE_U_INT64_T
void
buffer_put_int64(Buffer *buffer, u_int64_t value)
{
char buf[8];
+
PUT_64BIT(buf, value);
buffer_append(buffer, buf, 8);
}
-#endif
/*
* Returns an arbitrary binary string from the buffer. The string cannot
void *
buffer_get_string(Buffer *buffer, u_int *length_ptr)
{
- u_int len;
u_char *value;
+ u_int len;
+
/* Get the length. */
len = buffer_get_int(buffer);
if (len > 256 * 1024)
- fatal("buffer_get_string: bad string length %d", len);
+ fatal("buffer_get_string: bad string length %u", len);
/* Allocate space for the string. Add one byte for a null character. */
value = xmalloc(len + 1);
/* Get the string. */
buffer_get_char(Buffer *buffer)
{
char ch;
+
buffer_get(buffer, &ch, 1);
return (u_char) ch;
}
buffer_put_char(Buffer *buffer, int value)
{
char ch = value;
+
buffer_append(buffer, &ch, 1);
}