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Fix BIO_f_buffer().

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Submitted by: Adam Langley
Reviewed by: Bodo Moeller
This commit is contained in:
Bodo Möller 2011-12-02 12:25:03 +00:00
parent 0798170966
commit 390c579568
3 changed files with 25 additions and 7 deletions
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8
CHANGES
View File

@ -490,6 +490,10 @@
Changes between 1.0.0e and 1.0.0f [xx XXX xxxx]
*) Fix the BIO_f_buffer() implementation (which was mixing different
interpretations of the '..._len' fields).
[Adam Langley (Google)]
*) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
threads won't reuse the same blinding coefficients.
@ -1410,6 +1414,10 @@
Changes between 0.9.8r and 0.9.8s [xx XXX xxxx]
*) Fix the BIO_f_buffer() implementation (which was mixing different
interpretations of the '..._len' fields).
[Adam Langley (Google)]
*) Fix handling of BN_BLINDING: now BN_BLINDING_invert_ex (rather than
BN_BLINDING_invert_ex) calls BN_BLINDING_update, ensuring that concurrent
threads won't reuse the same blinding coefficients.

15
crypto/bio/bf_buff.c
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@ -209,7 +209,7 @@ start:
/* add to buffer and return */
if (i >= inl)
{
memcpy(&(ctx->obuf[ctx->obuf_len]),in,inl);
memcpy(&(ctx->obuf[ctx->obuf_off+ctx->obuf_len]),in,inl);
ctx->obuf_len+=inl;
return(num+inl);
}
@ -219,7 +219,7 @@ start:
{
if (i > 0) /* lets fill it up if we can */
{
memcpy(&(ctx->obuf[ctx->obuf_len]),in,i);
memcpy(&(ctx->obuf[ctx->obuf_off+ctx->obuf_len]),in,i);
in+=i;
inl-=i;
num+=i;
@ -294,9 +294,9 @@ static long buffer_ctrl(BIO *b, int cmd, long num, void *ptr)
case BIO_C_GET_BUFF_NUM_LINES:
ret=0;
p1=ctx->ibuf;
for (i=ctx->ibuf_off; i<ctx->ibuf_len; i++)
for (i=0; i<ctx->ibuf_len; i++)
{
if (p1[i] == '\n') ret++;
if (p1[ctx->ibuf_off + i] == '\n') ret++;
}
break;
case BIO_CTRL_WPENDING:
@ -399,17 +399,18 @@ static long buffer_ctrl(BIO *b, int cmd, long num, void *ptr)
for (;;)
{
BIO_clear_retry_flags(b);
if (ctx->obuf_len > ctx->obuf_off)
if (ctx->obuf_len > 0)
{
r=BIO_write(b->next_bio,
&(ctx->obuf[ctx->obuf_off]),
ctx->obuf_len-ctx->obuf_off);
ctx->obuf_len);
#if 0
fprintf(stderr,"FLUSH [%3d] %3d -> %3d\n",ctx->obuf_off,ctx->obuf_len-ctx->obuf_off,r);
fprintf(stderr,"FLUSH [%3d] %3d -> %3d\n",ctx->obuf_off,ctx->obuf_len,r);
#endif
BIO_copy_next_retry(b);
if (r <= 0) return((long)r);
ctx->obuf_off+=r;
ctx->obuf_len-=r;
}
else
{

9
crypto/bio/bio.h
View File

@ -306,6 +306,15 @@ DECLARE_STACK_OF(BIO)
typedef struct bio_f_buffer_ctx_struct
{
/* Buffers are setup like this:
*
* <---------------------- size ----------------------->
* +---------------------------------------------------+
* | consumed | remaining | free space |
* +---------------------------------------------------+
* <-- off --><------- len ------->
*/
/* BIO *bio; */ /* this is now in the BIO struct */
int ibuf_size; /* how big is the input buffer */
int obuf_size; /* how big is the output buffer */