search for: ssh_channel_open

...with SSH v2 is not working on my Solaris machines (and from what I understand from the source, it may not work elsewhere either). When looking at channel_post_port_listener() in channels.c, I found that nextstate was defined as : nextstate = (c->host_port == 0) ? SSH_CHANNEL_DYNAMIC : SSH_CHANNEL_OPENING; And later comes the call : if (nextstate != SSH_CHANNEL_DYNAMIC) port_open_helper(nc, rtype); It turns out that on the server-side, for a channel type of SSH_CHANNEL_RPORT_LISTENER, c->host_port is 0 and therefore, per the above code, nextstate == SSH_CHANNEL_DYNAMIC and port_open_he...

...el_connect *); +static int connect_to_helper(const char *host, u_short port, struct channel_connect *cctx); /* -- channel core */ @@ -209,6 +210,7 @@ channel_lookup(int id) case SSH_CHANNEL_LARVAL: case SSH_CHANNEL_CONNECTING: case SSH_CHANNEL_DYNAMIC: + case SSH_CHANNEL_RDYNAMIC: case SSH_CHANNEL_OPENING: case SSH_CHANNEL_OPEN: case SSH_CHANNEL_INPUT_DRAINING: @@ -534,6 +536,7 @@ channel_still_open(void) case SSH_CHANNEL_CLOSED: case SSH_CHANNEL_AUTH_SOCKET: case SSH_CHANNEL_DYNAMIC: + case SSH_CHANNEL_RDYNAMIC: case SSH_CHANNEL_CONNECTING: case SSH_CHANNEL_ZOMBIE: contin...

When I encounter the problem with TCP port forwarding locking up, I'll see this on the client window (if I haven't invoked ssh with -q): chan_shutdown_read failed for #1/fd6: Transport endpoint is not connected chan_shutdown_read failed for #1/fd6: Transport endpoint is not connected This is with Blowfish encryption. I have to kill and restart the client when this happens. Phil

https://bugzilla.mindrot.org/show_bug.cgi?id=2079 Bug ID: 2079 Summary: openssh 6.1/6.2 disconnect due to channel bug Classification: Unclassified Product: Portable OpenSSH Version: 6.1p1 Hardware: amd64 OS: FreeBSD Status: NEW Severity: normal Priority: P5 Component: ssh

...7 @@ channel_check_window(c); } +#ifdef WITH_PROTO13 static void channel_post_output_drain_13(Channel *c, fd_set * readset, fd_set * writeset) { @@ -1437,67 +1463,118 @@ buffer_consume(&c->output, len); } } +#endif static void channel_handler_init_20(void) { channel_pre[SSH_CHANNEL_OPEN] = &channel_pre_open_20; - channel_pre[SSH_CHANNEL_X11_OPEN] = &channel_pre_x11_open; +#ifdef WITH_TCPFWD channel_pre[SSH_CHANNEL_PORT_LISTENER] = &channel_pre_listener; channel_pre[SSH_CHANNEL_RPORT_LISTENER] = &channel_pre_listener; - channel_pre[SSH_CHANNEL_X11_LISTENER] =...

Using OpenSSH_2.9p2 on Linux and Sparc Solaris. Trying to connect from Linux to Solaris, with remote port-forwarding i.e. On Linux, ssh -R 3000:Linux:23 Solaris The connection is established okay, but the port-forwarding does not work; on Solaris, the connection to localhost port 3000 is accepted, but it appears as if no data makes it back to port 23 on Linux. If an older 1.2.30 sshd is used

Hi all, I'm using openssh-2.9p2 on Solaris 2.8. I can get remote port forwarding to work using the -R flag, but only with ssh protocol 1 not ssh protocol 2. I've read that remote forwarding protocol 2 was not supported in earlier versions of openssh, but I'm wondering if this is still the case. Jarno Huuskonen [Jarno.Huuskonen at uku.fi], posted a patch in 2000 to add support for

...30 2001 +++ channels.c.new Thu Apr 5 03:54:56 2001 @@ -1503,7 +1503,6 @@ case SSH_CHANNEL_LARVAL: if (!compat20) fatal("cannot happen: SSH_CHANNEL_LARVAL"); - continue; case SSH_CHANNEL_OPENING: case SSH_CHANNEL_OPEN: case SSH_CHANNEL_X11_OPEN: (That is, remove the "continue" statement.) I'm not 100% sure this is the right fix, though; I'm going to post to the OpenSSH developers list and see what they say. -- Richard Silverman sl...

...port %d", c->listening_port, c->path, c->host_port, remote_hostname, remote_port); - newch = channel_new("direct-tcpip", + newch = channel_new((c->type == SSH2_CHANNEL_PORT_LISTENER) ? + "forwarded-tcpip" : "direct-tcpip", SSH_CHANNEL_OPENING, newsock, newsock, -1, c->local_window_max, c->local_maxpacket, 0, xstrdup(buf), 1); if (compat20) { packet_start(SSH2_MSG_CHANNEL_OPEN); - packet_put_cstring("direct-tcpip"); + if (c->type == SSH2_CHANNEL_PORT_LISTENER) + packet_put_cstring("f...

...newch = channel_new("direct-tcpip", + /* Jarno: If the channel is SSH2 port listener (server) then send + * forwarded-tcpip message. + */ + newch = channel_new( (c->type == SSH2_CHANNEL_PORT_LISTENER) ? + "forwarded-tcpip" : "direct-tcpip", SSH_CHANNEL_OPENING, newsock, newsock, -1, c->local_window_max, c->local_maxpacket, 0, xstrdup(buf)); if (compat20) { packet_start(SSH2_MSG_CHANNEL_OPEN); - packet_put_cstring("direct-tcpip"); + if (c->type == SSH2_CHANNEL_PORT_LISTENER) + packet_put_cstring("forw...

...en(struct ssh *ssh) return 0; } +/* Returns true if a channel with a TTY is open. */ +int +channel_tty_open(struct ssh *ssh) +{ + u_int i; + Channel *c; + + for (i = 0; i < ssh->chanctxt->channels_alloc; i++) { + c = ssh->chanctxt->channels[i]; + if (c == NULL || c->type != SSH_CHANNEL_OPEN) + continue; + if (c->client_tty) + return 1; + } + return 0; +} + /* Returns the id of an open channel suitable for keepaliving */ int channel_find_open(struct ssh *ssh) diff --git a/channels.h b/channels.h index 7cfba92..c31733f 100644 --- a/channels.h +++ b/channels.h @@ -337,6 +337,7...

...-941,7 +941,11 @@ goto done; tun = forced_tun_device; } - sock = tun_open(tun, mode); +#if defined(SSH_TUN_LINUX) + sock = tun_open(tun, mode, the_authctxt->pw->pw_uid); +#else + sock = tun_open(tun, mode); +#endif if (sock < 0) goto done; c = channel_new("tun", SSH_CHANNEL_OPEN, sock, sock, -1, diff -Nurd openssh-4.3p2.orig/ssh.c openssh-4.3p2/ssh.c --- openssh-4.3p2.orig/ssh.c 2005-12-31 00:33:37.000000000 -0500 +++ openssh-4.3p2/ssh.c 2006-08-25 08:32:57.000000000 -0400 @@ -1073,8 +1073,13 @@ int fd; debug("Requesting tun."); +#if defined(SSH_TUN_LINUX...

Hello I have ported OpenSSH 3.8p1 to a LynxOS platform. Recently I heard a report from the field that v2 is perceived to be significantly slower than v1. Is this a known issue? Are there any configuration parameters that can be modified to make v2 faster? Thanks in advance for your response Amba

...eyscan and ssh/ssh-keyscan Common subdirectories: src/usr.bin/ssh/ssh-keysign and ssh/ssh-keysign diff -u src/usr.bin/ssh/ssh.c ssh/ssh.c --- src/usr.bin/ssh/ssh.c 2004-06-13 11:03:02.000000000 -0400 +++ ssh/ssh.c 2004-07-07 10:02:24.000000000 -0400 @@ -1125,7 +1125,11 @@ "session", SSH_CHANNEL_OPENING, in, out, err, window, packetmax, CHAN_EXTENDED_WRITE, "client-session", /*nonblock*/0); - + if (!tty_flag) { + c->dynamic_window = 1; + set_unlimited(&c->input,1); + set_unlimited(&c->output,1); + } debug3("ssh_session2_open: channel_new: %d&quot...

..._still_open(void) case SSH_CHANNEL_X11_LISTENER: case SSH_CHANNEL_PORT_LISTENER: case SSH_CHANNEL_RPORT_LISTENER: + case SSH_CHANNEL_MUX_LISTENER: case SSH_CHANNEL_CLOSED: case SSH_CHANNEL_AUTH_SOCKET: case SSH_CHANNEL_DYNAMIC: @@ -531,6 +531,7 @@ channel_still_open(void) case SSH_CHANNEL_OPENING: case SSH_CHANNEL_OPEN: case SSH_CHANNEL_X11_OPEN: + case SSH_CHANNEL_MUX_CLIENT: return 1; case SSH_CHANNEL_INPUT_DRAINING: case SSH_CHANNEL_OUTPUT_DRAINING: @@ -562,6 +563,8 @@ channel_find_open(void) case SSH_CHANNEL_X11_LISTENER: case SSH_CHANNEL_PORT_LISTENER: case...

...)) > 0) write(1, buf, n); close(sock); return 0; } -------------- next part -------------- --- channels.c.orig Wed Jun 13 21:18:05 2001 +++ channels.c Mon Jul 2 19:00:09 2001 @@ -1302,7 +1302,8 @@ /* Ignore any data for non-open channels (might happen on close) */ if (c->type != SSH_CHANNEL_OPEN && - c->type != SSH_CHANNEL_X11_OPEN) + c->type != SSH_CHANNEL_X11_OPEN && + c->type != SSH_CHANNEL_CONNECTING) return; /* same for protocol 1.5 if output end is no longer open */

...hen an IAC/IP is received by the telnet daemon. It seems an SSH break could/should perform a similar function (tcsendbreak() in session_break_req() would cause this) but my application is started as part of the users .profile - i.e. after a 'shell' request and the channel type is changed to SSH_CHANNEL_OPEN. Is there any way I can get a signal through to my server application from the client? Thanks Darren Warner

The command "ssh ls -l /doesnotexist" gives various responses: Running from a 200 MHz PentiumPro with dsa key added to ssh-agent: Mistakes worst to fast machine: To a faster 600 MHz dual processor i686 600 MHz machine: ls: /doesnotexist: No such file or directory -- correct nothing at all -- wrong ls: select: Bad file descriptor -- wrong

...ee channel %d", c->self); channel_free(c); diff -u openssh-3.8.1p1/ssh.c openssh-3.8.1p1-dynwindow/ssh.c --- openssh-3.8.1p1/ssh.c 2004-03-21 17:36:01.000000000 -0500 +++ openssh-3.8.1p1-dynwindow/ssh.c 2004-07-07 09:54:03.000000000 -0400 @@ -1117,7 +1117,11 @@ "session", SSH_CHANNEL_OPENING, in, out, err, window, packetmax, CHAN_EXTENDED_WRITE, "client-session", /*nonblock*/0); - + if (!tty_flag) { + c->dynamic_window = 1; + set_unlimited(&c->input,1); + set_unlimited(&c->output,1); + } debug3("ssh_session2_open: channel_new: %d&quot...

Numerous how-tos all over the Internet show how one would set up a tunnel using ssh, e.g.: ssh -f -o Tunnel=ethernet <server_ip> true I was wondering if there's a way to subsequently acquire the names of the local and remote tun/tap interfaces (e.g., using the default "-w any:any") for subsequent automatic tunnel configuration, e.g.: ip link set $TapDev up ip link set