search for: tty_flag

...menu services. This is similiar to what I am trying to do, use "-t" flag to ssh from my application, however it just didn't seem to work. >From the ssh.c source: /* Do not allocate a tty if stdin is not a tty. */ if (!isatty(fileno(stdin))) { if (tty_flag) fprintf(stderr, "Pseudo-terminal will not be allocated because stdin is not a terminal.\n"); tty_flag = 0; } This seems like it doesn't allocate a pseudo-tty no matter what the command line option set the tty_flag to, since it only che...

Hi all, I'm having problems with getting a tty against an extreme switch. I've tried with the -t flag that is supposed to force a tty but it's not working. I checked the code in ssh.c where this option is parsed: case 't': if (tty_flag) force_tty_flag = 1; tty_flag = 1; break; The tty_flag is initialized to 0 and what I can see this flag is always 0 at this stage in the code. Thus it is impossible to set the force_tty_flag to 1. Is this done intentionally or is it a bug? Why the if statement? Best Regards, Olle ____...

Hello, I've set up a cron job to use ssh with a remote forced command to delete the contents of a directory. System A has the cron job and uses a specific key for system B. No command as such is specified since the key on system B specifies 'command=/bin/rm -rf ...'. However, I am getting error messages back from the cron system (or rather from ssh) about it not allocating a tty since

...un through the sequence and options with the current versions: * QoS is still decided after expansion (expansion happens in main; QoS is set down from there in ssh_session2 / ssh_session2_open / ssh_session2_setup) * QoS, unless explicitly configured, is set to interactive based on the presence of tty_flag || a successful X forwarding. * tty_flag is set in main based on -t/-T, the presence of a command and isatty a few lines before the control path expansion. It should thus be relatively straight-forward to add a token for "is an interactive session" that would lack the QoS solution's...

...-n <host>" is able to open a session, but the session stays blocked because there is nothing to be read on the input. Following patch could be applied: --- openssh-3.8p1.orig/ssh.c Wed Dec 17 06:33:11 2003 +++ openssh-3.8p1/ssh.c Thu Apr 1 09:01:02 2004 @@ -549,7 +549,7 @@ if (no_tty_flag) tty_flag = 0; /* Do not allocate a tty if stdin is not a tty. */ - if (!isatty(fileno(stdin)) && !force_tty_flag) { + if ((!isatty(fileno(stdin)) || stdin_null_flag) && !force_tty_flag) { if (tty_flag) logit("Pseudo-terminal will not be allocated because stdin is...

...t fork to background if no command. */ - if (fork_after_authentication_flag && buffer_len(&command) == 0) - fatal("Cannot fork into background without a command to execute."); - /* Allocate a tty by default if no command specified. */ if (buffer_len(&command) == 0) tty_flag = 1; @@ -511,6 +507,29 @@ /* reinit */ log_init(av[0], options.log_level, SYSLOG_FACILITY_USER, 0); + /* -N option only makes sense with protocol 2. It doesn't make sense + without port forwarding ?????? + */ + if ( options.num_local_forwards == 0 && options.num_remote_forwards...

...1/0 but something like I/NI for Interactive/Non-Interactive or something like that. But that's just a minor matter of preference. 1/0 works fine as well. > If so, I'd be happy to write it. That would be great! > Would it make sense to make the condition `options.forward_x11 || > tty_flag` rather than plain `tty_flag` to capture the intention of > the forwarding? I think I agree that it's better not to do this. Especially the case of a globally enabled ForwardX11 is worrying to me. FWIW, I came up with a workaround to get my priorities straight ;-). The case where I want to...

...se request the server to start a shell. @@ -1223,6 +1259,12 @@ fatal("daemon() failed: %.200s", strerror(errno)); } + if (pid_file) + { + if (write_pid_file(pid_file) == -1) + fatal("write_pid(%s) failed: %.200s", pid_file, strerror(errno)); + } + return client_loop(tty_flag, tty_flag ? options.escape_char : SSH_ESCAPECHAR_NONE, id); } Folkert van Heusden -- MultiTail is a versatile tool for watching logfiles and output of commands. Filtering, coloring, merging, diff-view, etc. http://www.vanheusden.com/multitail/ --------------------------------------------...

...options->visual_host_key = 0; if (options->ip_qos_interactive == -1) --- ssh.c 30 Jul 2015 00:01:34 -0000 1.420 +++ ssh.c 13 Jan 2016 23:17:23 -0000 @@ -1882,9 +1882,6 @@ ssh_session2(void) fork_postauth(); } - if (options.use_roaming) - request_roaming(); - return client_loop(tty_flag, tty_flag ? options.escape_char : SSH_ESCAPECHAR_NONE, id); }

...@@ main(int ac, char **av) options.control_path = percent_expand(cp, "h", host, "l", thishost, "n", host_arg, "r", options.user, "p", portstr, "u", pw->pw_name, "L", shorthost, + "Q", iptos2str(tty_flag ? + options.ip_qos_interactive : options.ip_qos_bulk), (char *)NULL); xfree(cp); } Index: ssh_config.5 =================================================================== RCS file: /cvs/src/usr.bin/ssh/ssh_config.5,v retrieving revision 1.154 diff -u -p -r1.154 ssh_config.5 --- s...

...g indicating whether we should try to use ssh-askpass or not */ +int use_askpass = 0; + /* Prints a help message to the user. This function never returns. */ void @@ -430,10 +433,20 @@ /* Do not allocate a tty if stdin is not a tty. */ if (!isatty(fileno(stdin))) { + FILE *dummy; if (tty_flag) fprintf(stderr, "Pseudo-terminal will not be allocated because stdin is not a terminal.\n"); tty_flag = 0; + + /* Now to check if we should be using askpass */ + if ((dummy = fopen("/dev/tty", "r"))) { + fclose(dummy); + } else { + if (getenv("DISPL...

I've been testing tunneling on Linux with openssh-SNAP-20060116.tar.gz and found a problem. When I use LocalCommand for doing ifconfig stuff, the command line was executed before a tunneling interface is opened. This causes errors on Linux and the interface is not automatically set up. This is not a problem on *BSD because you can do ifconfig for unopened tun/tap interfaces. But in Linux,

...| Attachment #2141|0 |1 is obsolete| | --- Comment #1 from Damien Miller <djm at mindrot.org> --- Created attachment 2171 --> https://bugzilla.mindrot.org/attachment.cgi?id=2171&action=edit move initialisation of tty_flag to after config parsing The original patch seems no longer to apply. Here's a regenerated one. -- You are receiving this mail because: You are watching the assignee of the bug.

...ept() in situations of file descriptor exhaustion. Instead back off for a while. * ssh(1)/sshd(8): Remove hmac-sha2-256-96 and hmac-sha2-512-96 MACs as they were removed from the specification. bz#2023, * sshd(8): Handle long comments in config files better. bz#2025 * ssh(1): Delay setting tty_flag so RequestTTY options are correctly picked up. bz#1995 * sshd(8): Fix handling of /etc/nologin incorrectly being applied to root on platforms that use login_cap. Portable OpenSSH: * sshd(8): Allow sshd pre-auth sandboxing to fall-back to the rlimit sandbox from the Linux SECCOMP filter...

...ept() in situations of file descriptor exhaustion. Instead back off for a while. * ssh(1)/sshd(8): Remove hmac-sha2-256-96 and hmac-sha2-512-96 MACs as they were removed from the specification. bz#2023, * sshd(8): Handle long comments in config files better. bz#2025 * ssh(1): Delay setting tty_flag so RequestTTY options are correctly picked up. bz#1995 * sshd(8): Fix handling of /etc/nologin incorrectly being applied to root on platforms that use login_cap. Portable OpenSSH: * sshd(8): Allow sshd pre-auth sandboxing to fall-back to the rlimit sandbox from the Linux SECCOMP filter...

..._path); /* FALLTHROUGH */ case SSHCTL_MASTER_NO: break; @@ -1452,6 +1462,8 @@ signal(SIGINT, control_client_sighandler); signal(SIGTERM, control_client_sighandler); signal(SIGWINCH, control_client_sigrelay); + + debug("connected to control master; waiting for exit"); if (tty_flag) enter_raw_mode();

...t fork to background if no command. */ - if (fork_after_authentication_flag && buffer_len(&command) == 0) - fatal("Cannot fork into background without a command to execute."); - /* Allocate a tty by default if no command specified. */ if (buffer_len(&command) == 0) tty_flag = 1; @@ -511,6 +507,29 @@ /* reinit */ log_init(av[0], options.log_level, SYSLOG_FACILITY_USER, 0); + /* -N option only makes sense with protocol 2. It doesn't make sense + without port forwarding ?????? + */ + if ( options.num_local_forwards == 0 && options.num_remote_forwards...

...ept() in situations of file descriptor exhaustion. Instead back off for a while. * ssh(1)/sshd(8): Remove hmac-sha2-256-96 and hmac-sha2-512-96 MACs as they were removed from the specification. bz#2023, * sshd(8): Handle long comments in config files better. bz#2025 * ssh(1): Delay setting tty_flag so RequestTTY options are correctly picked up. bz#1995 * sshd(8): Fix handling of /etc/nologin incorrectly being applied to root on platforms that use login_cap. Portable OpenSSH: * sshd(8): Allow sshd pre-auth sandboxing to fall-back to the rlimit sandbox from the Linux SECCOMP filter...

...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", c->self); channel_send_open(c->self); Only in openssh-3.8.1p1-dynwindow: ssh_prng_cmds

...].port, + options.remote_forwards[i].host, + options.remote_forwards[i].host_port); + } +} + extern void client_set_session_ident(int id); void @@ -963,7 +979,9 @@ /* should be pre-session */ init_local_fwd(); - + /* Jarno */ + init_remote_fwd(); + window = 32*1024; if (tty_flag) { packetmax = window/8;