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2011-03-25Provide 'dev_type' environment variable to plug-ins and script hooksDavid Sommerseth1-0/+1
Normally OpenVPN is configured with --dev {tun,tap}, but it is also possible to use --dev myvpn instead. In these situations, OpenVPN will request --dev-type as well to be able to set up a tun or tap device properly. The 'dev' environment variable will contain the value provided by --dev. In those cases where the plug-in/script need to behave differently when using a tun device versus using a tap device, there are no possibilities for it to know what kind of device --dev myvpn would be. This patch adds a 'dev_type' environment variable which contains a string of the device type, either automatically discovered based on the --dev name, or set using the --dev-type option. Signed-off-by: David Sommerseth <dazo@users.sourceforge.net> Acked-by: James Yonan <james@openvpn.net>
2010-11-13Merge branch 'svn-BETA21' into beta2.2David Sommerseth1-4/+34
Conflicts: version.m4 - Reset version.m4 to a more neutral version number Signed-off-by: David Sommerseth <dazo@users.sourceforge.net>
2010-10-24Implement challenge/response authentication support in client mode,James Yonan1-4/+34
where credentials are entered from stdin. This capability is compiled when ENABLE_CLIENT_CR is defined in syshead.h (enabled by default). Challenge/response support was previously implemented for creds that are queried via the management interface. In this case, the challenge message will be returned as a custom client-reason-text string (see management-notes.txt for more info) on auth failure. Also, see the comments in misc.c above get_auth_challenge() for info on the OpenVPN challenge/response protocol. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@6568 e7ae566f-a301-0410-adde-c780ea21d3b5
2010-10-21Revamped the script-security warning logging (version 2)David Sommerseth1-0/+10
The main task of this patch is to avoid reporting the SCRIPT_SECURITY_WARNING over and over again, in addition to not show this warning when it should not be a problem. This general warning should now only appear once, and only when --script-security is not set, 0 or 1. In all other cases this warning should not appear. In addition, this warning will come close to the script-hook which most probably will fail. It will also give a little bit more concrete hint on which script-hook which failed. If --script-security is 2 or 3, only the execve failure itself will be shown. This message will on the other hand be shown repeatedly. This is a new rewritten version which simplifies the implementaion of the new openvpn_run_script() function. It was considered to remove it completely, but due to code clearity and easy of use it was decided to make this function a static inline function instead. Anyhow, this function will enforce openvpn_execve_check() to be called with the S_SCRIPT flag. Patch ACKed on the developers meeting 2009-04-29. Signed-off-by: David Sommerseth <dazo@users.sourceforge.net> Acked-by: James Yonan <james@openvpn.net>
2010-10-21Harden create_temp_filename() (version 2)David Sommerseth1-2/+2
By hardening the create_temp_filename() function to check if the generated filename exists and to create the temp file with only S_IRUSR|S_IWUSR bit files set before calling the script, it should become even more difficult to exploit such a scenario. After a discussion on the mailing list, Fabian Knittel provided an enhanced version of the inital patch which is added to this patch. This patch also renames create_temp_filename() to create_temp_file(), as this patch also creates the temporary file. The function returns the filename of the created file, or NULL on error. Signed-off-by: David Sommerseth <dazo@users.sourceforge.net> Signed-off-by: Fabian Knittel <fabian.knittel@avona.com> Acked-by: Gert Doering <gert@greenie.muc.de>
2010-05-24Implemented http-proxy-override and http-proxy-fallback directives to make itJames Yonan1-0/+5
easier for OpenVPN client UIs to start a pre-existing client config file with proxy options, or to adaptively fall back to a proxy connection if a direct connection fails. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@5652 e7ae566f-a301-0410-adde-c780ea21d3b5
2010-04-28Updated copyright date to 2010.James Yonan1-1/+1
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@5599 e7ae566f-a301-0410-adde-c780ea21d3b5
2009-08-22Added --remote-random-hostname option.james1-0/+3
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@4843 e7ae566f-a301-0410-adde-c780ea21d3b5
2009-05-30Update copyright to 2009.james1-1/+1
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@4477 e7ae566f-a301-0410-adde-c780ea21d3b5
2008-11-17* Added additional method parameter to --script-security to preservejames1-0/+17
backward compatibility with system() call semantics used in OpenVPN 2.1_rc8 and earlier. To preserve backward compatibility use: script-security 3 system git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3495 e7ae566f-a301-0410-adde-c780ea21d3b5
2008-10-06Copyright notice changed to reflect change in name ofjames1-1/+1
Telethra to OpenVPN Technologies. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3409 e7ae566f-a301-0410-adde-c780ea21d3b5
2008-09-30Management interface can now listen on a unixjames1-1/+25
domain socket, for example: management /tmp/openvpn unix Also added management-client-user and management-client-group directives to control which processes are allowed to connect to the socket. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3396 e7ae566f-a301-0410-adde-c780ea21d3b5
2008-09-062.1_rc8 and earlier did implicit shell expansion on scriptjames1-3/+33
arguments since all scripts were called by system(). The security hardening changes made to 2.1_rc9 no longer use system(), but rather use the safer execve or CreateProcess system calls. The security hardening also introduced a backward incompatibility with 2.1_rc8 and earlier in that script parameters were no longer shell-expanded, so for example: client-connect "docc CLIENT-CONNECT" would fail to work because execve would try to execute a script called "docc CLIENT-CONNECT" instead of "docc" with "CLIENT-CONNECT" as the first argument. This patch fixes the issue, bringing the script argument semantics back to pre 2.1_rc9 behavior in order to preserve backward compatibility while still using execve or CreateProcess to execute the script/executable. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3311 e7ae566f-a301-0410-adde-c780ea21d3b5
2008-07-26Completely revamped the system for calling external programs and scripts:james1-8/+18
* All external programs and scripts are now called by execve() on unix and CreateProcess on Windows. * The system() function is no longer used. * Argument lists for external programs and scripts are now built by the new argv_printf function which natively outputs to string arrays (i.e. char *argv[] lists), never truncates its output, and eliminates the security issues inherent in formatting and parsing command lines, and dealing with argument quoting. * The --script-security directive has been added to offer policy controls on OpenVPN's execution of external programs and scripts. Also added a new plugin example (openvpn/plugin/examples/log.c) that logs information to stdout for every plugin method called by OpenVPN. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3122 e7ae566f-a301-0410-adde-c780ea21d3b5
2008-07-18Added a warning when plugins are specified withoutjames1-0/+3
an absolute pathname. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3082 e7ae566f-a301-0410-adde-c780ea21d3b5
2008-07-17Previously, OpenVPN might log a client's auth-user-passjames1-0/+3
password if the verbosity was set to a high debug level such as 7 or higher. Normally this would only be used by developers. Now, even at high debug levels, the password will not be output. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3073 e7ae566f-a301-0410-adde-c780ea21d3b5
2008-07-14Copyright change OpenVPN Solutions LLC -> Telethra, Inc.james1-1/+1
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3048 e7ae566f-a301-0410-adde-c780ea21d3b5
2008-06-11Updated copyright notice to 2008.james1-1/+1
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@2995 e7ae566f-a301-0410-adde-c780ea21d3b5
2008-06-11Merged connection profiles fromjames1-0/+3
http://svn.openvpn.net/projects/openvpn/test/conn git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@2993 e7ae566f-a301-0410-adde-c780ea21d3b5
2008-05-24Support asynchronous/deferred authentication injames1-1/+1
OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY plugin handler. See documentation in openvpn-plugin.h and example usage in plugin/defer/simple.c. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@2969 e7ae566f-a301-0410-adde-c780ea21d3b5
2008-05-12Moved branch into official BETA21 position.james1-1/+6
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@2959 e7ae566f-a301-0410-adde-c780ea21d3b5
2008-01-21Allow OpenVPN to run completely unprivileged under Linuxjames1-0/+7
by allowing openvpn --mktun to be used with --user and --group to set the UID/GID of the tun device node. Also added --iproute option to allow an alternative command to be executed in place of the default iproute2 command (Alon Bar-Lev). git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@2639 e7ae566f-a301-0410-adde-c780ea21d3b5
2007-08-17AUTO_USERID feature -- if the auth-user-pass option is usedjames1-1/+1
with some argument ARG, then -ARG will be appended to the username string that is sent to the server. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@2259 e7ae566f-a301-0410-adde-c780ea21d3b5
2006-11-23Fixed issue where struct env_set methods thatjames1-0/+1
change the value of an existing name=value pair would delay the freeing of the memory held by the previous name=value pair until the underlying client instance object is closed. This could cause a server that handles long-term client connections, resulting in many periodic calls to verify_callback, to needlessly grow the env_set memory allocation until the underlying client instance object is closed. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@1493 e7ae566f-a301-0410-adde-c780ea21d3b5
2006-11-13New try at AUTO_USERID.james1-0/+4
Implemented AUTO_USERID using MD5(MAC address(primary network adapter)). Currently implemented for Linux and Windows. Basically if ENABLE_AUTO_USERID is defined, the --auth-user-pass option will not prompt for username/password, but will rather generate a unique username and blank password. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@1459 e7ae566f-a301-0410-adde-c780ea21d3b5
2006-11-08Added time_ascii, time_duration, and time_unixjames1-0/+1
environmental variables for plugins and callback scripts. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@1440 e7ae566f-a301-0410-adde-c780ea21d3b5
2006-11-01Merged Alon's branch:v2.1_rc1james1-1/+2
svn merge -r1322:1392 https://svn.openvpn.net/projects/openvpn/contrib/alon/21rc/openvpn . Version 2.1_rc1 released git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@1420 e7ae566f-a301-0410-adde-c780ea21d3b5
2006-04-05Security Vulnerability -- An OpenVPN client connecting to ajames1-0/+1
malicious or compromised server could potentially receive "setenv" configuration directives from the server which could cause arbitrary code execution on the client via a LD_PRELOAD attack. A successful attack appears to require that (a) the client has agreed to allow the server to push configuration directives to it by including "pull" or the macro "client" in its configuration file, (b) the client configuration file uses a scripting directive such as "up" or "down", (c) the client succesfully authenticates the server, (d) the server is malicious or has been compromised and is under the control of the attacker, and (e) the attacker has at least some level of pre-existing control over files on the client (this might be accomplished by having the server respond to a client web request with a specially crafted file). The fix is to disallow "setenv" to be pushed to clients from the server, and to add a new directive "setenv-safe" which is pushable from the server, but which appends "OPENVPN_" to the name of each remotely set environmental variable. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@983 e7ae566f-a301-0410-adde-c780ea21d3b5
2005-11-09Removed annoying 'i' variable from add_option.james1-0/+1
Allow plugin and push directives to have multiple parameters specified instead of only 1 quoted parameter. Allow plugin and push directives to have multi-line parameter lists, such as: <plugin> my-plugin.so parm1 parm2 </plugin> git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@785 e7ae566f-a301-0410-adde-c780ea21d3b5
2005-11-05svn merge -r 771:780 $SO/trunk/openvpnjames1-0/+1
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@781 e7ae566f-a301-0410-adde-c780ea21d3b5
2005-10-31Windows reliability changes:james1-0/+2
* Added code to make sure that the local PATH environmental variable points to the Windows system32 directory. * Added new --ip-win32 adaptive mode which tries 'dynamic' and then fails over to 'netsh' if the DHCP negotiation fails. * Made --ip-win32 adaptive the default. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@739 e7ae566f-a301-0410-adde-c780ea21d3b5
2005-10-20Merged with Alon's r688.james1-3/+7
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@689 e7ae566f-a301-0410-adde-c780ea21d3b5
2005-09-26This is the start of the BETA21 branch.james1-0/+256
It includes the --topology feature, and TAP-Win32 driver changes to allow non-admin access. git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@580 e7ae566f-a301-0410-adde-c780ea21d3b5
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