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buffer: Only reduce the buffer size if it gets bigger than 64K

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Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
This commit is contained in:
Andreas Schneider
2018-09-02 10:11:59 +02:00
parent 254a0f7132
commit efef877356
1 changed files with 10 additions and 2 deletions
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12
src/buffer.c
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@@ -249,6 +249,9 @@ static void buffer_shift(ssh_buffer buffer)
/** /**
* @brief Reinitialize a SSH buffer. * @brief Reinitialize a SSH buffer.
* *
* In case the buffer has exceeded 64K in size, the buffer will be reallocated
* to 64K.
*
* @param[in] buffer The buffer to reinitialize. * @param[in] buffer The buffer to reinitialize.
* *
* @return 0 on success, < 0 on error. * @return 0 on success, < 0 on error.
@@ -267,8 +270,13 @@ int ssh_buffer_reinit(struct ssh_buffer_struct *buffer)
buffer->used = 0; buffer->used = 0;
buffer->pos = 0; buffer->pos = 0;
if (buffer->allocated > 127) { /* If the buffer is bigger then 64K, reset it to 64K */
if (realloc_buffer(buffer, 127) < 0) { if (buffer->allocated > 65536) {
int rc;
/* -1 for realloc_buffer magic */
rc = realloc_buffer(buffer, 65536 - 1);
if (rc != 0) {
return -1; return -1;
} }
} }