search for: want_reply

OpenSSH clients (in all releases I have been able to test with, including 4.7p1) when talking protocol version 2 seem to be sending SSH_MSG_CHANNEL_REQUEST messages with the want_reply field set to 0. This leads to a problem when the server they interact with does not support the service being requested. If the channel request is for, say, command execution, and the server does not support such a capability, a standards-compliant server won't send anything back at that p...

...2 Component: ssh AssignedTo: bitbucket at mindrot.org ReportedBy: jca at newtonesque.kicks-ass.net OpenSSH clients (in all releases I have been able to test with, including 4.7p1) when talking protocol version 2 seem to be sending SSH_MSG_CHANNEL_REQUEST messages with the want_reply field set to 0. This leads to a problem when the server they interact with does not support the service being requested. If the channel request is for, say, command execution, and the server does not support such a capability, a standards-compliant server won't send anything back at that p...

...trying to 'ssh -R 0:localhost:22 user at remote', please let me know! --- serverloop.c.original 2009-10-21 10:45:13.000000000 +0300 +++ serverloop.c 2009-10-21 10:53:09.000000000 +0300 @@ -1119,9 +1119,9 @@ if (!options.allow_tcp_forwarding || no_port_forwarding_flag || (!want_reply && listen_port == 0) #ifndef NO_IPPORT_RESERVED_CONCEPT - || (listen_port < IPPORT_RESERVED && pw->pw_uid != 0) + || (listen_port !=0 && listen_port < IPPORT_RESERVED && pw->pw_uid != 0) #endif ) { success = 0; packet_send_debug...

..._session_request debug1: channel 0: new [server-session] debug1: session_new: session 0 debug1: session_open: channel 0 debug1: session_open: session 0: link with channel 0 debug1: server_input_channel_open: confirm session debug1: server_input_global_request: rtype no-more-sessions at openssh.com want_reply 0 debug1: server_input_channel_req: channel 0 request pty-req reply 1 debug1: session_by_channel: session 0 channel 0 debug1: session_input_channel_req: session 0 req pty-req debug1: Allocating pty. debug1: session_new: session 0 mm_send_fd: sendmsg(7): Invalid argument mm_answer_pty: send fds fail...

...irectory /var/sshvpn/ debug3: reprocess config:91 setting AllowTCPForwarding no debug3: reprocess config:92 setting AllowStreamLocalForwarding yes debug3: reprocess config:93 setting StreamLocalBindUnlink yes [...snip...] debug1: server_input_global_request: rtype streamlocal-forward at openssh.com want_reply 1 debug1: server_input_global_request: streamlocal-forward listen path /sshvpn/gateway debug3: channel_setup_fwd_listener_streamlocal: type 19 path /sshvpn/gateway bind: Address already in use unix_listener: cannot bind to path: /sshvpn/gateway I am aware of the StreamLocalBindUnlink option, and y...

...d."); + */ + return 0; +} + +/* Jarno Huuskonen: This is called when server receives + * SSH2_MSG_GLOBAL_REQUEST. Handles both "tcpip-forward" and + * "cancel-tcpip-forward" requests. + */ +void +channel_server_global_request(int type, int plen) +{ + char *rtype; + char want_reply; + int success = 0; + + rtype = packet_get_string(NULL); + want_reply = packet_get_char(); + debug("server received: %.100s request (reply=%d)",rtype, + (int)want_reply); + + if ( strcmp(rtype, "tcpip-forward") == 0 ) { + char *address_to_bind; + int port_to_bind; + addr...

https://bugzilla.mindrot.org/show_bug.cgi?id=2348 Bug ID: 2348 Summary: allow ssh to connect to a unix domain socket Product: Portable OpenSSH Version: -current Hardware: All OS: All Status: NEW Severity: enhancement Priority: P5 Component: ssh Assignee: unassigned-bugs at

...window += adjust; } +/* Jarno Huuskonen: This is called when server receives + * SSH2_MSG_GLOBAL_REQUEST. Handles both "tcpip-forward" and + * "cancel-tcpip-forward" requests. + */ +void +channel_server_global_request(int type, int plen, void *ctxt) +{ + char *rtype; + char want_reply; + int success = 0; + + rtype = packet_get_string(NULL); + want_reply = packet_get_char(); + + if ( strcmp(rtype, "tcpip-forward") == 0 ) { + char *address_to_bind; + int port_to_bind; + + address_to_bind = packet_get_string(NULL); + port_to_bind = packet_get_int(); + + /* Check if...

Hi, mancha and me debugged a problem with OpenSSH 7.3p1 that was reported on the #openssh freenode channel. Symptoms were that this message was popping on the console during a busy X11 session: kex protocol error: type 7 seq 1234 I managed to reproduce the problem, it is related to the SSH_EXT_INFO packet that is send by the server every time it is sending an SSH_NEWKEYS packet, hence after

http://bugzilla.mindrot.org/show_bug.cgi?id=833 Summary: sshd server sends SshMsgChannelFailure despite of successfully running sftp server Product: Portable OpenSSH Version: 3.8p1 Platform: All OS/Version: Cygwin on NT/2k Status: NEW Severity: normal Priority: P2 Component: sshd

Hi, Just a usecase that I'm sure has been covered before but just in case its not an openssh solution would be very helpful. I was trying to install software on a server that was firewalled so no outbound http connections would work. I was also tunnelling via another server. Outbound ssh connections also were a convenient option. What would have been nice would be a remote version of

...setting AllowTCPForwarding no > > debug3: reprocess config:92 setting AllowStreamLocalForwarding yes > > debug3: reprocess config:93 setting StreamLocalBindUnlink yes > > [...snip...] > > debug1: server_input_global_request: rtype > > streamlocal-forward at openssh.com want_reply 1 > > debug1: server_input_global_request: streamlocal-forward listen path > > /sshvpn/gateway > > debug3: channel_setup_fwd_listener_streamlocal: type 19 path > > /sshvpn/gateway > > bind: Address already in use > > unix_listener: cannot bind to path: /sshvpn/ga...

...st'. That's not useful. sshd -ddd shows the following in the midst of an incoming "ssh -R 22220:faron:22 linus". Obviously I want to see the word 'faron' somewhere but don't. That seems like a bug to me. ... debug1: server_input_global_request: rtype tcpip-forward want_reply 1 debug1: server_input_global_request: tcpip-forward listen localhost port 22220 debug3: channel_setup_fwd_listener: type 11 wildcard 0 addr NULL debug1: Local forwarding listening on 127.0.0.1 port 22220. ... Fantastic! But half the useful information. Okay, maybe I have to connect through the...

Dear all, while playing around with openssh-4.1p1 (trying to add AFS token forwarding in SSH-2), I noticed that agressive rekeying (as e.g. employed by regress/rekey.sh, rekeying every 16bytes) seems to disturb the various forwardings (X11, agent) set up at the beginning of the session. These do not trigger regression test errors, since the client does not ask for confirmation from the server for

...verloop.c 2005-12-30 23:33:37.000000000 -0600 +++ openssh-4.3p2-kylie/serverloop.c 2006-05-03 16:52:06.000000000 -0500 @@ -1085,6 +1085,7 @@ server_input_global_request(int type, u_ success = channel_cancel_rport_listener(cancel_address, cancel_port); + xfree(cancel_address); } if (want_reply) { packet_start(success ?

...ug3: send packet: type 90 > debug1: Requesting no-more-sessions at openssh.com > debug3: send packet: type 80 > debug1: Entering interactive session. > debug1: pledge: network > debug3: receive packet: type 80 > debug1: client_input_global_request: rtype hostkeys-00 at openssh.com want_reply 0 > debug3: receive packet: type 91 > debug2: channel_input_open_confirmation: channel 0: callback start > debug2: fd 3 setting TCP_NODELAY > debug3: ssh_packet_set_tos: set IP_TOS 0x48 > debug2: client_session2_setup: id 0 > debug2: channel 0: request pty-req confirm 1 > debug...

...n succeeded (password). Authenticated to 192.168.1.100 ([192.168.1.100]:22). debug1: channel 0: new [client-session] debug1: Requesting no-more-sessions at openssh.com debug1: Entering interactive session. debug1: pledge: network debug1: client_input_global_request: rtype hostkeys-00 at openssh.com want_reply 0 debug1: Sending environment. debug1: Sending env LANG = en_US.UTF-8 Last login: Tue Mar 27 00:50:05 2018 from 10.1.1.53 debug1: client_input_channel_req: channel 0 rtype exit-status reply 0 debug1: client_input_channel_req: channel 0 rtype eow at openssh.com reply 0 debug1: channel 0: free: clien...

...g1: deferring postauth fork until remote forward confirmation received debug1: Entering interactive session. debug1: pledge: id debug2: set_control_persist_exit_time: schedule exit in 14400 seconds debug3: receive packet: type 80 debug1: client_input_global_request: rtype hostkeys-00 at openssh.com want_reply 0 debug3: receive packet: type 4 debug1: Remote: /home/tbrown/.ssh/authorized_keys:1: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding debug3: receive packet: type 4 debug1: Remote: /home/tbrown/.ssh/authorized_keys:1: key options: agent-forwarding port-forwarding pty user-r...

...fd 7 setting O_NONBLOCK debug1: channel 0: new [client-session] debug3: ssh_session2_open: channel_new: 0 debug2: channel 0: send open debug1: Requesting no-more-sessions at openssh.com debug1: Entering interactive session. debug1: client_input_global_request: rtype hostkeys-00 at openssh.com want_reply 0 debug2: callback start debug2: client_session2_setup: id 0 debug1: Sending command: printf "%4096s" " " debug2: channel 0: request exec confirm 1 debug2: callback done debug2: channel 0: open confirm rwindow 0 rmax 32768 debug2: channel 0: rcvd adjust 2097152 debug2: c...

...te SSH_MSG_REQUEST_SUCCESS uint32 port that was bound on the server OpenSSH 6.7 honors this, with there being no response-specific data in the case where a non-zero port number is requested. The associated code for this in server_input_global_request() in server loop.c is: if (want_reply) { packet_start(success ? SSH2_MSG_REQUEST_SUCCESS : SSH2_MSG_REQUEST_FAILURE); if (success && allocated_listen_port > 0) packet_put_int(allocated_listen_port); packet_send(); pack...