version 1.17.2.3, 2002/06/02 22:56:09 |
version 1.18, 2001/12/05 10:06:12 |
|
|
oi = BN_bn2bin(value, buf); |
oi = BN_bn2bin(value, buf); |
if (oi != bin_size) |
if (oi != bin_size) |
fatal("buffer_put_bignum: BN_bn2bin() failed: oi %d != bin_size %d", |
fatal("buffer_put_bignum: BN_bn2bin() failed: oi %d != bin_size %d", |
oi, bin_size); |
oi, bin_size); |
|
|
/* Store the number of bits in the buffer in two bytes, msb first. */ |
/* Store the number of bits in the buffer in two bytes, msb first. */ |
PUT_16BIT(msg, bits); |
PUT_16BIT(msg, bits); |
|
|
/* |
/* |
* Retrieves an BIGNUM from the buffer. |
* Retrieves an BIGNUM from the buffer. |
*/ |
*/ |
void |
int |
buffer_get_bignum(Buffer *buffer, BIGNUM *value) |
buffer_get_bignum(Buffer *buffer, BIGNUM *value) |
{ |
{ |
int bits, bytes; |
int bits, bytes; |
|
|
bytes = (bits + 7) / 8; |
bytes = (bits + 7) / 8; |
if (buffer_len(buffer) < bytes) |
if (buffer_len(buffer) < bytes) |
fatal("buffer_get_bignum: input buffer too small"); |
fatal("buffer_get_bignum: input buffer too small"); |
bin = buffer_ptr(buffer); |
bin = (u_char *) buffer_ptr(buffer); |
BN_bin2bn(bin, bytes, value); |
BN_bin2bn(bin, bytes, value); |
buffer_consume(buffer, bytes); |
buffer_consume(buffer, bytes); |
|
|
|
return 2 + bytes; |
} |
} |
|
|
/* |
/* |
|
|
oi = BN_bn2bin(value, buf+1); |
oi = BN_bn2bin(value, buf+1); |
if (oi != bytes-1) |
if (oi != bytes-1) |
fatal("buffer_put_bignum: BN_bn2bin() failed: oi %d != bin_size %d", |
fatal("buffer_put_bignum: BN_bn2bin() failed: oi %d != bin_size %d", |
oi, bytes); |
oi, bytes); |
hasnohigh = (buf[1] & 0x80) ? 0 : 1; |
hasnohigh = (buf[1] & 0x80) ? 0 : 1; |
if (value->neg) { |
if (value->neg) { |
/**XXX should be two's-complement */ |
/**XXX should be two's-complement */ |
int i, carry; |
int i, carry; |
u_char *uc = buf; |
u_char *uc = buf; |
log("negativ!"); |
log("negativ!"); |
for (i = bytes-1, carry = 1; i>=0; i--) { |
for(i = bytes-1, carry = 1; i>=0; i--) { |
uc[i] ^= 0xff; |
uc[i] ^= 0xff; |
if (carry) |
if (carry) |
carry = !++uc[i]; |
carry = !++uc[i]; |
|
|
xfree(buf); |
xfree(buf); |
} |
} |
|
|
void |
int |
buffer_get_bignum2(Buffer *buffer, BIGNUM *value) |
buffer_get_bignum2(Buffer *buffer, BIGNUM *value) |
{ |
{ |
/**XXX should be two's-complement */ |
/**XXX should be two's-complement */ |
int len; |
int len; |
u_char *bin = buffer_get_string(buffer, (u_int *)&len); |
u_char *bin = (u_char *)buffer_get_string(buffer, (u_int *)&len); |
BN_bin2bn(bin, len, value); |
BN_bin2bn(bin, len, value); |
xfree(bin); |
xfree(bin); |
|
return len; |
} |
} |
|
|
/* |
/* |
* Returns integers from the buffer (msb first). |
* Returns an integer from the buffer (4 bytes, msb first). |
*/ |
*/ |
|
|
u_short |
|
buffer_get_short(Buffer *buffer) |
|
{ |
|
u_char buf[2]; |
|
buffer_get(buffer, (char *) buf, 2); |
|
return GET_16BIT(buf); |
|
} |
|
|
|
u_int |
u_int |
buffer_get_int(Buffer *buffer) |
buffer_get_int(Buffer *buffer) |
{ |
{ |
|
|
} |
} |
|
|
/* |
/* |
* Stores integers in the buffer, msb first. |
* Stores an integer in the buffer in 4 bytes, msb first. |
*/ |
*/ |
void |
void |
buffer_put_short(Buffer *buffer, u_short value) |
|
{ |
|
char buf[2]; |
|
PUT_16BIT(buf, value); |
|
buffer_append(buffer, buf, 2); |
|
} |
|
|
|
void |
|
buffer_put_int(Buffer *buffer, u_int value) |
buffer_put_int(Buffer *buffer, u_int value) |
{ |
{ |
char buf[4]; |
char buf[4]; |
|
|
* will be stored there. A null character will be automatically appended |
* will be stored there. A null character will be automatically appended |
* to the returned string, and is not counted in length. |
* to the returned string, and is not counted in length. |
*/ |
*/ |
void * |
char * |
buffer_get_string(Buffer *buffer, u_int *length_ptr) |
buffer_get_string(Buffer *buffer, u_int *length_ptr) |
{ |
{ |
u_int len; |
u_int len; |
u_char *value; |
char *value; |
/* Get the length. */ |
/* Get the length. */ |
len = buffer_get_int(buffer); |
len = buffer_get_int(buffer); |
if (len > 256 * 1024) |
if (len > 256 * 1024) |
fatal("buffer_get_string: bad string length %d", len); |
fatal("Received packet with bad string length %d", len); |
/* Allocate space for the string. Add one byte for a null character. */ |
/* Allocate space for the string. Add one byte for a null character. */ |
value = xmalloc(len + 1); |
value = xmalloc(len + 1); |
/* Get the string. */ |
/* Get the string. */ |
|
|
void |
void |
buffer_put_cstring(Buffer *buffer, const char *s) |
buffer_put_cstring(Buffer *buffer, const char *s) |
{ |
{ |
if (s == NULL) |
|
fatal("buffer_put_cstring: s == NULL"); |
|
buffer_put_string(buffer, s, strlen(s)); |
buffer_put_string(buffer, s, strlen(s)); |
} |
} |
|
|