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sftp: Set error when EOF is received in sftp_packet_read()

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When reading a sftp packet and an EOF is received before all requested
bytes are read, set the session and sftp error codes.

Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
This commit is contained in:
Anderson Toshiyuki Sasaki
2018-12-03 17:25:22 +01:00
committed by Andreas Schneider
parent 58113d489e
commit d78a29eb79
1 changed files with 12 additions and 0 deletions
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12
src/sftp.c
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@@ -396,6 +396,10 @@ sftp_packet sftp_packet_read(sftp_session sftp)
} else if (s == 0) { } else if (s == 0) {
is_eof = ssh_channel_is_eof(sftp->channel); is_eof = ssh_channel_is_eof(sftp->channel);
if (is_eof) { if (is_eof) {
ssh_set_error(sftp->session,
SSH_FATAL,
"Received EOF while reading sftp packet size");
sftp_set_error(sftp, SSH_FX_EOF);
goto error; goto error;
} }
} else { } else {
@@ -416,6 +420,10 @@ sftp_packet sftp_packet_read(sftp_session sftp)
} else if (nread == 0) { } else if (nread == 0) {
is_eof = ssh_channel_is_eof(sftp->channel); is_eof = ssh_channel_is_eof(sftp->channel);
if (is_eof) { if (is_eof) {
ssh_set_error(sftp->session,
SSH_FATAL,
"Received EOF while reading sftp packet type");
sftp_set_error(sftp, SSH_FX_EOF);
goto error; goto error;
} }
} }
@@ -451,6 +459,10 @@ sftp_packet sftp_packet_read(sftp_session sftp)
/* Retry the reading unless the remote was closed */ /* Retry the reading unless the remote was closed */
is_eof = ssh_channel_is_eof(sftp->channel); is_eof = ssh_channel_is_eof(sftp->channel);
if (is_eof) { if (is_eof) {
ssh_set_error(sftp->session,
SSH_REQUEST_DENIED,
"Received EOF while reading sftp packet");
sftp_set_error(sftp, SSH_FX_EOF);
goto error; goto error;
} }
} }