Commit Graph

108 Commits

Author SHA1 Message Date
Patrick Stewart
0af22aa8e4 Support servers without multiple user support (#76) 2019-03-20 22:44:49 +08:00
Matt Johnston
fe992bf4ea Split ChanType closehandler() and cleanup() so that dbclient doesn't
lose exit status messages
2018-11-14 22:57:56 +08:00
François Perrad
f042eb41ab more linting (#55)
* dropbear_exit: remove priority parameter

confusion with dropbear_log()

* const parameter
2018-02-17 11:27:37 +08:00
Michael Witten
3ee685ad1c options: Complete the transition to numeric toggles (`#if')
For the sake of review, this commit alters only the code; the affiliated
comments within the source files also need to be updated, but doing so
now would obscure the operational changes that have been made here.

* All on/off options have been switched to the numeric `#if' variant;
  that is the only way to make this `default_options.h.in' thing work
  in a reasonable manner.

* There is now some very minor compile-time checking of the user's
  choice of options.

* NO_FAST_EXPTMOD doesn't seem to be used, so it has been removed.

* ENABLE_USER_ALGO_LIST was supposed to be renamed DROPBEAR_USER_ALGO_LIST,
  and this commit completes that work.

* DROPBEAR_FUZZ seems to be a relatively new, as-yet undocumented option,
  which was added by the following commit:

    commit 6e0b539e9c
    Author: Matt Johnston <matt@ucc.asn.au>
    Date:   Tue May 23 22:29:21 2017 +0800

        split out checkpubkey_line() separately

  It has now been added to `sysoptions.h' and defined as `0' by default.

* The configuration option `DROPBEAR_PASSWORD_ENV' is no longer listed in
  `default_options.h.in'; it is no longer meant to be set by the user, and
  is instead left to be defined in `sysoptions.h' (where it was already being
  defined) as merely the name of the environment variable in question:

    DROPBEAR_PASSWORD

  To enable or disable use of that environment variable, the user must now
  toggle `DROPBEAR_USE_DROPBEAR_PASSWORD'.

* The sFTP support is now toggled by setting `DROPBEAR_SFTPSERVER', and the
  path of the sFTP server program is set independently through the usual
  SFTPSERVER_PATH.
2018-02-16 23:13:47 +08:00
Matt Johnston
1700987bfc fix compile warnings 2018-02-14 23:09:28 +08:00
Matt Johnston
a1aa161527 make signal flags volatile, simplify handling 2018-02-14 23:06:01 +08:00
Francois Perrad
598056d168 Pointer parameter could be declared as pointing to const (callback) 2017-08-19 22:39:53 +02:00
Francois Perrad
89e64c631e Pointer parameter could be declared as pointing to const 2017-08-19 17:16:13 +02:00
Francois Perrad
2e38ac7504 initialize variable 2016-11-15 15:33:27 +01:00
Matt Johnston
32a28d0d9c Convert #ifdef to #if, other build changes 2016-05-04 15:33:40 +02:00
Jeremy Kerr
ac9a4c839f Add -c <command> option to force a specific command
This change adds a -c option to dropbear, to force the session to use a
specific command, in a similar fashion to OpenSSH's ForceCommand
configuration option.

This is useful to provide a simple fixed service over ssh, without
requiring an authorized key file for the per-key forced_command option.

This setting takes precedence over the channel session's provided
command, and the per-key forced_command setting.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2016-04-12 21:01:08 +08:00
Guilhem Moulin
dc01a8edd4 Don't display the MOTD when an explicit command is run.
(possibly via authorized_keys(5) restrictions), even when a
pseudo-terminal has been allocated for the session.  In other words,
only display the MOTD when the server starts the user's default shell.
2015-10-21 22:08:47 +08:00
Matt Johnston
1a4db21fe4 buf_getstring and buf_putstring now use non-unsigned char* 2015-06-04 23:08:50 +08:00
Gaël PORTAY
292656d899 Turn signame local variable into char * 2015-05-05 20:39:14 +02:00
Gaël PORTAY
05b36b484e Turn ChanSess's cmd attribute into char * 2015-05-05 20:39:14 +02:00
Gaël PORTAY
e5ce3fc51b Turn type local variable into char * 2015-05-05 20:39:14 +02:00
Gaël PORTAY
9f97511356 Turn ChanSess's tty and term attributes into char * 2015-05-05 20:39:14 +02:00
Gaël PORTAY
224b16b247 Fix pointer differ in signess warnings [-Werror=pointer-sign] 2015-05-05 20:39:13 +02:00
Gaël PORTAY
ef0aac432c Fix unused make_connection_string() warning [-Werror=unused-function]
This function is used when USE_VFORK is unset.
2015-05-05 20:39:13 +02:00
Matt Johnston
9adfff5c1a Revert accidental commented out signal handlers 2015-02-24 22:23:32 +08:00
Matt Johnston
21bed0d21a Free memory before exiting. Based on patch from Thorsten Horstmann.
Client side is not complete.
2015-02-24 22:01:33 +08:00
Thorsten Horstmann
ab9439519a Fix for old compilers, variable declarations at beginning of functions
and /**/ comments
2015-02-24 20:51:18 +08:00
Matt Johnston
776d908703 Combine code for SSH_CONNECTION and SSH_CLIENT 2014-10-21 22:33:49 +08:00
Ryan Cleere
957450582f Add SSH_CLIENT environment variable 2014-10-20 12:59:47 -05:00
Matt Johnston
6d2d3669f3 Make keepalive handling more robust, this should now match what OpenSSH does 2014-08-19 23:08:56 +08:00
Matt Johnston
0e7409c7ff Make sure the check_close() handler runs when a server child process exits 2014-07-28 23:23:49 +08:00
Matt Johnston
da57dd13c5 Set tcp priority as follows:
if (connecting || ptys || x11) tos = LOWDELAY;
else if (tcp_forwards) tos = 0;
else tos = BULK;

TCP forwards could be either lowdelay or bulk, hence the default priority.
2014-07-16 22:53:32 +08:00
Matt Johnston
1dc5312f00 - Save errno in signal handlers
- Use _exit() in segv handler
2014-02-15 21:13:57 +08:00
Matt Johnston
998d6cdfc4 - Sockets are set to lowdelay priority initially to improve conneciton setup
time
- Set non-pty connections to bulk for client and server
2013-12-03 00:04:48 +08:00
Catalin Patulea
ddc10b2d0c Set IPTOS_LOWDELAY on PTY sessions only 2013-12-02 22:55:43 +08:00
Matt Johnston
cbe63bbabe rename random.h to dbrandom.h since some OSes have a system random.h
--HG--
rename : random.c => dbrandom.c
rename : random.h => dbrandom.h
2013-11-14 22:05:47 +08:00
Matt Johnston
e7917c16c9 Remove accidental one second sleep leftover from debugging 2013-08-12 22:41:00 +08:00
Matt Johnston
d5ccc32b4d Improve RNG seeding.
Try to read from /dev/urandom multiple times, take input from extra sources,
and use /dev/random when generating private keys
2012-06-29 23:19:43 +08:00
Andrey Mazo
d4a14fcb3d Fixed compilation with unset ENABLE_{SVR,CLI}_AGENTFWD.
Got rid of ENABLE_AGENTFWD macro.
2012-03-26 16:17:16 +04:00
Matt Johnston
49b79fa02d Rename HAVE_FORK to USE_VFORK
It makes it a bit more obvious why there's a test there since HAVE_FORK
is the normal case.
2012-04-09 20:35:13 +08:00
Mike Frysinger
c957edbe75 check for fork() and not __uClinux__ 2012-04-08 01:50:52 -04:00
Matt Johnston
a15fc009da - Initialise sa_mask properly 2011-12-04 05:41:46 +08:00
Matt Johnston
6c4390c848 - Merge 2012-02-21 23:00:30 +08:00
Matt Johnston
a3188b44f0 - Make sure sa_mask is set 2012-02-21 22:57:19 +08:00
Matt Johnston
aec23e5f79 - Fix use-after-free if multiple command requests were sent. Move
the original_command into chansess struct since that makes more sense
2011-12-04 05:31:25 +08:00
Matt Johnston
2303d0fd09 Avoid segfault when handling childpid race
--HG--
extra : convert_revision : 8845727a7e2b096015dbb76d8f3df13c9acee7da
2011-03-31 14:42:11 +00:00
Matt Johnston
53fc7eaf03 Compile fix for when both client and server agent forwarding is disabled
--HG--
extra : convert_revision : 8a608f0ed5e4b491dba4bf330e560636ec7376fd
2011-02-28 13:39:18 +00:00
Matt Johnston
38ed870ffe Improve capitalisation for all logged strings
--HG--
extra : convert_revision : 997e53cec7a9efb7413ac6e17b6be60a5597bd2e
2011-02-23 15:50:30 +00:00
Matt Johnston
8bad5d61fd don't #include "utmp.h"
--HG--
extra : convert_revision : a014a978f213e6ff424e7d10794ae426375f3191
2010-03-04 14:50:19 +00:00
Matt Johnston
4dfb834f7c Move remotehost into svr_ses structure since we can't look it up
once we've forked (the connection socket has been closed).
Fixes inetd mode.

--HG--
extra : convert_revision : 7d5d152ec84fb11a188966c1400d213c908cc511
2009-09-05 11:40:00 +00:00
Matt Johnston
4e9f22c602 - Set $SSH_CONNECTION
- Document environment variables in the manpage

--HG--
extra : convert_revision : 1a93c6112f00730f5cd21a853d3bd5ca8079f725
2009-09-02 14:47:12 +00:00
Matt Johnston
f88bed7a30 Rearrange getaddrstring() etc
--HG--
extra : convert_revision : 8a18c4a60aeaec085923d13d98fa0f93c506ceba
2009-09-01 16:38:26 +00:00
Matt Johnston
ccd02552dd - set $SSH_TTY environment variable
- remove extraneous (crash causing) printf()

--HG--
extra : convert_revision : cf4b256bf6785be384eca32f7b229b89e58539eb
2009-08-31 15:25:39 +00:00
Matt Johnston
4b1f9e50f2 - set $SSH_ORIGINAL_COMMAND if a command is forced, and log it
if LOG_COMMANDS is set

--HG--
extra : convert_revision : d9e8aa0ecbe7607285fa4f96f0d6f9b1523719d8
2009-08-26 14:09:22 +00:00
Matt Johnston
bb8234c2f1 Agent forwarding works
--HG--
branch : agent-client
extra : convert_revision : eb0dae4b62e243ba37a897beb7ba81a4f637d8b3
2009-07-30 15:14:33 +00:00