generic-library/ssh2
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

sftp.c: stop reading when buffer is full

Browse Source 
Since we can only store data from a single chunk in filep,
we have to stop receiving data as soon as the buffer is full.

This adresses the following bug report:
https://github.com/libssh2/libssh2/issues/50
This commit is contained in:
Jakob Egger 2016-01-13 14:02:14 +01:00 committed by Daniel Stenberg
parent 60874670ef
commit 0d60964632
1 changed files with 8 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
src/sftp.c
View File

@ -1531,6 +1531,8 @@ static ssize_t sftp_read(LIBSSH2_SFTP_HANDLE * handle, char *buffer,
the buffer at the correct index */
memcpy(sliding_bufferp, data + 9, rc32);
filep->offset += rc32;
bytes_in_buffer += rc32;
sliding_bufferp += rc32;
if(filep->data_len == 0)
/* free the allocated data if not stored to keep */
@ -1542,18 +1544,14 @@ static ssize_t sftp_read(LIBSSH2_SFTP_HANDLE * handle, char *buffer,
next = _libssh2_list_next(&chunk->node);
_libssh2_list_remove(&chunk->node);
LIBSSH2_FREE(session, chunk);
chunk = NULL;
if(rc32 > 0) {
/* continue to the next chunk */
bytes_in_buffer += rc32;
sliding_bufferp += rc32;
/* check if we have space left in the buffer
* and either continue to the next chunk or stop
*/
if (bytes_in_buffer < buffer_size) {
chunk = next;
} else {
/* A zero-byte read is not necessarily EOF so we must not
* return 0 (that would signal EOF to the caller) so
* instead we carry on to the next chunk */
chunk = next;
chunk = NULL;
}
break;