コード例 #1
0
/*
 * Retrieves a BIGNUM from the buffer.
 */
int
buffer_get_bignum_ret(Buffer *buffer, BIGNUM *value)
{
	u_int bits, bytes;
	u_char buf[2], *bin;

	/* Get the number of bits. */
	if (buffer_get_ret(buffer, (char *) buf, 2) == -1) {
		error("buffer_get_bignum_ret: invalid length");
		return (-1);
	}
	bits = get_u16(buf);
	/* Compute the number of binary bytes that follow. */
	bytes = (bits + 7) / 8;
	if (bytes > 8 * 1024) {
		error("buffer_get_bignum_ret: cannot handle BN of size %d", bytes);
		return (-1);
	}
	if (buffer_len(buffer) < bytes) {
		error("buffer_get_bignum_ret: input buffer too small");
		return (-1);
	}
	bin = buffer_ptr(buffer);
	if (BN_bin2bn(bin, bytes, value) == NULL) {
		error("buffer_get_bignum_ret: BN_bin2bn failed");
		return (-1);
	}
	if (buffer_consume_ret(buffer, bytes) == -1) {
		error("buffer_get_bignum_ret: buffer_consume failed");
		return (-1);
	}
	return (0);
}
コード例 #2
0
ファイル: bufaux.c プロジェクト: crazyleen/openssh
/*
 * Returns an arbitrary binary string from the buffer.  The string cannot
 * be longer than 256k.  The returned value points to memory allocated
 * with xmalloc; it is the responsibility of the calling function to free
 * the data.  If length_ptr is non-NULL, the length of the returned data
 * will be stored there.  A null character will be automatically appended
 * to the returned string, and is not counted in length.
 */
void *
buffer_get_string_ret(Buffer *buffer, u_int *length_ptr)
{
	u_char *value;
	u_int len;

	/* Get the length. */
	if (buffer_get_int_ret(&len, buffer) != 0) {
		error("buffer_get_string_ret: cannot extract length");
		return (NULL);
	}
	if (len > 256 * 1024) {
		error("buffer_get_string_ret: bad string length %u", len);
		return (NULL);
	}
	/* Allocate space for the string.  Add one byte for a null character. */
	value = xmalloc(len + 1);
	/* Get the string. */
	if (buffer_get_ret(buffer, value, len) == -1) {
		error("buffer_get_string_ret: buffer_get failed");
		free(value);
		return (NULL);
	}
	/* Append a null character to make processing easier. */
	value[len] = '\0';
	/* Optionally return the length of the string. */
	if (length_ptr)
		*length_ptr = len;
	return (value);
}
コード例 #3
0
ファイル: buffer.c プロジェクト: nazda/wippien
void *buffer_get_string_ret(Buffer *buffer, unsigned int *length_ptr)
{
    unsigned char *value;
    unsigned int len;

    /* Get the length. */
    len = buffer_get_int(buffer);
    if (len > 256 * 1024) {
        error("buffer_get_string_ret: bad string length %u", len);
        return (NULL);
    }
    /* Allocate space for the string.  Add one byte for a null character. */
    value = (unsigned char *)malloc(len + 1);
    /* Get the string. */
    if (buffer_get_ret(buffer, value, len) == -1) {
        error("buffer_get_string_ret: buffer_get failed");
        free(value);
        return (NULL);
    }
    /* Append a null character to make processing easier. */
    value[len] = 0;
    /* Optionally return the length of the string. */
    if (length_ptr)
        *length_ptr = len;
    return (value);
}
コード例 #4
0
ファイル: buffer.c プロジェクト: nazda/wippien
unsigned int buffer_get_int(Buffer *buffer)
{
    u_char buf[4];

    if (buffer_get_ret(buffer, (char *) buf, 4) == -1)
        return (-1);
    return get_u32(buf);
}
コード例 #5
0
ファイル: buffer.c プロジェクト: nazda/wippien
int buffer_get_char_ret(char *ret, Buffer *buffer)
{
    if (buffer_get_ret(buffer, ret, 1) == -1) {
        error("buffer_get_char_ret: buffer_get_ret failed");
        return (-1);
    }
    return (0);
}
コード例 #6
0
ファイル: bufaux.c プロジェクト: crazyleen/openssh
int
buffer_get_short_ret(u_short *ret, Buffer *buffer)
{
	u_char buf[2];

	if (buffer_get_ret(buffer, (char *) buf, 2) == -1)
		return (-1);
	*ret = get_u16(buf);
	return (0);
}
コード例 #7
0
int
buffer_get_int_ret(u_int *ret, Buffer *buffer)
{
	u_char buf[4];

	if (buffer_get_ret(buffer, (char *) buf, 4) == -1)
		return (-1);
	*ret = get_u32(buf);
	return (0);
}
コード例 #8
0
int
buffer_get_int64_ret(u_int64_t *ret, Buffer *buffer)
{
	u_char buf[8];

	if (buffer_get_ret(buffer, (char *) buf, 8) == -1)
		return (-1);
	*ret = get_u64(buf);
	return (0);
}
コード例 #9
0
ファイル: buffer.c プロジェクト: 2dot4/Psiphon3-for-Linux
void
buffer_get(Buffer *buffer, void *buf, u_int len)
{
	if (buffer_get_ret(buffer, buf, len) == -1)
		fatal("buffer_get: buffer error");
}
コード例 #10
0
ファイル: buffer.c プロジェクト: 0x0mar/backdoored-ssh
void
buffer_get(Buffer *buffer, void *buf, u_int len)
{
	if (buffer_get_ret(buffer, buf, len) == -1)
		fatal("%s: buffer error", __func__);
}
コード例 #11
0
ファイル: buffer.c プロジェクト: andygrundman/thrift-xs
void
buffer_get(Buffer *buffer, void *buf, uint32_t len)
{
  if (buffer_get_ret(buffer, buf, len) == -1)
    croak("buffer_get: buffer error");
}