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buffer: Reformat buffer_shift()

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Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
This commit is contained in:
Andreas Schneider
2018-08-31 15:57:58 +02:00
parent 29f36791c9
commit be703974e9
1 changed files with 18 additions and 13 deletions
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19
src/buffer.c
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@@ -182,17 +182,22 @@ static int realloc_buffer(struct ssh_buffer_struct *buffer, size_t needed) {
* @brief shifts a buffer to remove unused data in the beginning
* @param buffer SSH buffer
*/
static void buffer_shift(ssh_buffer buffer){
static void buffer_shift(ssh_buffer buffer)
{
uint32_t burn_pos = buffer->pos;
buffer_verify(buffer);
if(buffer->pos==0)
return;
memmove(buffer->data, buffer->data + buffer->pos, buffer->used - buffer->pos);
buffer->used -= buffer->pos;
buffer->pos=0;
if (buffer->secure){
if (buffer->pos == 0) {
return;
}
memmove(buffer->data,
buffer->data + buffer->pos,
buffer->used - buffer->pos);
buffer->used -= buffer->pos;
buffer->pos = 0;
if (buffer->secure) {
void *ptr = buffer->data + buffer->used;
explicit_bzero(ptr, burn_pos);
}