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Code Issues

dropbear: fix keepalive with putty

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Don't send SSH_MSG_UNIMPLEMENTED for keepalive responses, which broke
at least putty.

Fixes #17522 / #17523.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 42162
This commit is contained in:
Jonas Gorski 2014-08-13 20:49:56 +00:00
parent 92ef017054
commit 006cdbfdbc
1 changed files with 58 additions and 0 deletions
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58
package/network/services/dropbear/patches/001-dont_send_SSH_MSG_IMPLEMENTED.patch Normal file
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@ -0,0 +1,58 @@
# HG changeset patch
# User Matt Johnston <matt@ucc.asn.au>
# Date 1407937727 -28800
# Node ID f7f6c15b0ec30b0def69c9ccbb3dc4eb97374abc
# Parent 02821319ab1f1208b7ab5de4af82a562c386d40d
Don't send SSH_MSG_UNIMPLEMENTED for keepalive responses
diff -r 02821319ab1f -r f7f6c15b0ec3 cli-session.c
--- a/cli-session.c Fri Aug 08 21:53:47 2014 +0800
+++ b/cli-session.c Wed Aug 13 21:48:47 2014 +0800
@@ -73,6 +73,8 @@
#ifdef ENABLE_CLI_REMOTETCPFWD
{SSH_MSG_REQUEST_SUCCESS, cli_recv_msg_request_success}, /* client */
{SSH_MSG_REQUEST_FAILURE, cli_recv_msg_request_failure}, /* client */
+#else
+ {SSH_MSG_REQUEST_FAILURE, ignore_recv_msg_request_failure}, /* for keepalive */
#endif
{0, 0} /* End */
};
diff -r 02821319ab1f -r f7f6c15b0ec3 common-session.c
--- a/common-session.c Fri Aug 08 21:53:47 2014 +0800
+++ b/common-session.c Wed Aug 13 21:48:47 2014 +0800
@@ -394,6 +394,11 @@
return pos+1;
}
+void ignore_recv_msg_request_failure() {
+ // Do nothing
+ TRACE(("Ignored msg_request_failure"))
+}
+
static void send_msg_keepalive() {
CHECKCLEARTOWRITE();
time_t old_time_idle = ses.last_packet_time_idle;
diff -r 02821319ab1f -r f7f6c15b0ec3 session.h
--- a/session.h Fri Aug 08 21:53:47 2014 +0800
+++ b/session.h Wed Aug 13 21:48:47 2014 +0800
@@ -47,6 +47,7 @@
void session_cleanup();
void send_session_identification();
void send_msg_ignore();
+void ignore_recv_msg_request_failure();
void update_channel_prio();
diff -r 02821319ab1f -r f7f6c15b0ec3 svr-session.c
--- a/svr-session.c Fri Aug 08 21:53:47 2014 +0800
+++ b/svr-session.c Wed Aug 13 21:48:47 2014 +0800
@@ -58,6 +58,7 @@
{SSH_MSG_CHANNEL_OPEN, recv_msg_channel_open},
{SSH_MSG_CHANNEL_EOF, recv_msg_channel_eof},
{SSH_MSG_CHANNEL_CLOSE, recv_msg_channel_close},
+ {SSH_MSG_REQUEST_FAILURE, ignore_recv_msg_request_failure}, /* for keepalive */
#ifdef USING_LISTENERS
{SSH_MSG_CHANNEL_OPEN_CONFIRMATION, recv_msg_channel_open_confirmation},
{SSH_MSG_CHANNEL_OPEN_FAILURE, recv_msg_channel_open_failure},