search for: chan_mark_dead

Hi, I've been experimenting with MaxSessions=0 in the sshd_config and have encountered one unfortunate problem. Once the client authenticates to the server, it ceases to respond to keyboard input. At first glance, it looks like the client is in a hung state and does not time out. If port forwarding was requested on the command-line and the server accepts the request, that continues to work.

...try to guess the protocol */ + p = buffer_ptr(&c->output); + switch (p[0]) { + case 0x04: + ret = channel_decode_socks4(c, readset, writeset); + break; + case 0x05: + ret = channel_decode_socks5(c, readset, writeset); + break; + default: + ret = -1; + break; + } + if (ret < 0) { + chan_mark_dead(c); + } else if (ret == 0) { + debug2("channel %d: pre_rdynamic: need more", c->self); + /* need more */ + } else { + /* switch to the next state */ + struct channel_connect cctx; + int sock; + + sock = connect_to_helper(c->path, c->host_port, &cctx); + if (sock < 0...

The 4.6p1 sshd is logging this error during remote commands or file transfers: error: channel 0: chan_read_failed for istate 3 Platform is Solaris 8, 4.6p1 + OpenSSL 0.9.8d. The commands and transfers work correctly, so the error message appears to be spurious. The error message does not appear when processing logins. Otherwise 4.6p1 is running without any apparent problems. This error

https://bugzilla.mindrot.org/show_bug.cgi?id=2250 Bug ID: 2250 Summary: SOCKS5 should return "NO ACCEPTABLE METHODS" instead of nothing Product: Portable OpenSSH Version: -current Hardware: All OS: All Status: NEW Severity: enhancement Priority: P5

...+ } if (chan_is_dead(c)) { /* * we have to remove the fd's from the select mask diff -u openssh-2.9.9p2/channels.h openssh-2.9.9p2J/channels.h --- openssh-2.9.9p2/channels.h Mon Sep 17 23:51:14 2001 +++ openssh-2.9.9p2J/channels.h Thu Sep 27 22:16:44 2001 @@ -219,6 +219,7 @@ void chan_mark_dead(Channel *); void chan_init_iostates(Channel *); void chan_init(void); +void chan_shutdown_read(Channel *); typedef void chan_event_fn(Channel *); diff -u openssh-2.9.9p2/clientloop.c openssh-2.9.9p2J/clientloop.c --- openssh-2.9.9p2/clientloop.c Mon Sep 17 23:51:14 2001 +++ openssh-2....

...ntinue; + } (*ftab[c->type])(c, readset, writeset); + } channel_garbage_collect(c); } } diff -ur openssh-3.0p1/channels.h openssh-3.0p1J/channels.h --- openssh-3.0p1/channels.h Thu Oct 11 19:35:06 2001 +++ openssh-3.0p1J/channels.h Tue Nov 13 15:55:52 2001 @@ -218,6 +218,7 @@ void chan_mark_dead(Channel *); void chan_init_iostates(Channel *); void chan_init(void); +void chan_shutdown_read(Channel *); typedef void chan_event_fn(Channel *); diff -ur openssh-3.0p1/clientloop.c openssh-3.0p1J/clientloop.c --- openssh-3.0p1/clientloop.c Thu Oct 11 19:36:09 2001 +++ openssh-3.0p1J/...

...;ctl_fd, buf, sizeof(buf)); - if (len < 0 && (errno == EINTR || errno == EAGAIN)) - return 1; - if (len <= 0) { - debug2("channel %d: ctl read<=0", c->self); - if (c->type != SSH_CHANNEL_OPEN) { - debug2("channel %d: not open", c->self); - chan_mark_dead(c); - return -1; - } else { - chan_read_failed(c); - chan_write_failed(c); - } - return -1; - } else - fatal("%s: unexpected data on ctl fd", __func__); - } - return 1; -} - -static int channel_check_window(Channel *c) { if (c->type == SSH_CHANNEL_OPEN &&...

Hi OpenSSH developers, I am using openSSH (now 2.9.9p2, but prob occurs in 2.9p2 also) to execute commands on a remote machine which outputs data to stdout then pipes it to another invocation of ssh which connects back to the first machine in the same way, where it starts a program to read and store the output from the command on the second machine. I am using the "command" option in