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Import s2_pkt.c wbuf fixes from OpenSSL_0_9_6-stable branch.

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This commit is contained in:
Bodo Möller
2000-12-18 11:35:32 +00:00
parent cb38052b3a
commit 3880cd35ad
4 changed files with 36 additions and 8 deletions
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25
ssl/s2_pkt.c
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@@ -541,6 +541,9 @@ static int do_ssl_write(SSL *s, const unsigned char *buf, unsigned int len)
{
bs=EVP_CIPHER_CTX_block_size(s->enc_read_ctx);
j=len+mac_size;
/* Two-byte headers allow for a larger record length than
* three-byte headers, but we can't use them if we need
* padding or if we have to set the escape bit. */
if ((j > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER) &&
(!s->s2->escape))
{
@@ -556,25 +559,39 @@ static int do_ssl_write(SSL *s, const unsigned char *buf, unsigned int len)
}
else if ((bs <= 1) && (!s->s2->escape))
{
/* len=len; */
/* j <= SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER, thus
* j < SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER */
s->s2->three_byte_header=0;
p=0;
}
else /* 3 byte header */
else /* we may have to use a 3 byte header */
{
/*len=len; */
/* If s->s2->escape is not set, then
* j <= SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER, and thus
* j < SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER. */
p=(j%bs);
p=(p == 0)?0:(bs-p);
if (s->s2->escape)
{
s->s2->three_byte_header=1;
if (j > SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER)
j=SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER;
}
else
s->s2->three_byte_header=(p == 0)?0:1;
}
}
/* Now
* j <= SSL2_MAX_RECORD_LENGTH_2_BYTE_HEADER
* holds, and if s->s2->three_byte_header is set, then even
* j <= SSL2_MAX_RECORD_LENGTH_3_BYTE_HEADER.
*/
/* mac_size is the number of MAC bytes
* len is the number of data bytes we are going to send
* p is the number of padding bytes
* if p == 0, it is a 2 byte header */
* (if it is a two-byte header, then p == 0) */
s->s2->wlength=len;
s->s2->padding=p;