From 35eb2614d86316ba9f5a6806ce64f56680fa1e97 Mon Sep 17 00:00:00 2001 From: Jakub Jelen Date: Tue, 5 Sep 2023 17:33:41 +0200 Subject: [PATCH] libssh: cap SFTP packet size sent Due to libssh limitations Signed-off-by: Jakub Jelen Closes #11804 --- lib/vssh/libssh.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/lib/vssh/libssh.c b/lib/vssh/libssh.c index dea0084575859b..7c6a2e53f338fa 100644 --- a/lib/vssh/libssh.c +++ b/lib/vssh/libssh.c @@ -2567,6 +2567,12 @@ static ssize_t sftp_send(struct Curl_easy *data, int sockindex, struct connectdata *conn = data->conn; (void)sockindex; + /* limit the writes to the maximum specified in Section 3 of + * https://datatracker.ietf.org/doc/html/draft-ietf-secsh-filexfer-02 + */ + if(len > 32768) + len = 32768; + nwrite = sftp_write(conn->proto.sshc.sftp_file, mem, len); myssh_block2waitfor(conn, FALSE);