* Warn when ethernet bridging that the IP address of the
bridge adapter is probably not the same address that
the LAN adapter was set to previously.
* When running as a server, warn if the LAN network address is
the all-popular 192.168.[0|1].x, since this condition commonly
leads to subnet conflicts down the road.
* Primarily on the client, check for subnet conflicts between
the local LAN and the VPN subnet.
Added a 'netmask' parameter to get_default_gateway, to return
the netmask of the adapter containing the default gateway.
Only implemented on Windows so far. Other platforms will
return 255.255.255.0. Currently the netmask information is
only used to warn about subnet conflicts.
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3179 e7ae566f-a301-0410-adde-c780ea21d3b5
DHCP proxy mode: Configure server mode for ethernet
bridging using a DHCP-proxy, where clients talk to the
OpenVPN server-side DHCP server to receive their IP address
allocation and DNS server addresses.
Added "--route-gateway dhcp", to enable the extraction
of the gateway address from a DHCP negotiation with the
OpenVPN server-side LAN.
Modified client.conf and server.conf to reflect new option
modes.
Incremented version to 2.1_rc9a.
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3164 e7ae566f-a301-0410-adde-c780ea21d3b5
* --tls-remote -- some people misunderstand the semantics
* --script-security -- warn if script-security will allow user-defined
scripts to be called, and also warn separately if passwords may be
passed to scripts via the environment
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3129 e7ae566f-a301-0410-adde-c780ea21d3b5
* 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
success/error, and any truncation of output due to an insufficiently
large output buffer will be cause for error.
In verify_callback, read X509 Subject Name without truncation.
In verify_callback, rather than silently truncating Common Name at
64 bytes, throw an error if Common Name is larger than 64 bytes.
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3084 e7ae566f-a301-0410-adde-c780ea21d3b5
likely() and unlikely() macro additions to syshead.h) and r3061.
I would like to give more thought to the bigger issue of fortifying
buffer.[ch] through the use of additional defensive programming techniques.
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3081 e7ae566f-a301-0410-adde-c780ea21d3b5
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
created by port_share_open, so as to ensure
a newly seeded PRNG sequence. This is strictly
defensive programming since port_share_proxy
currently does not use the PRNG.
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3070 e7ae566f-a301-0410-adde-c780ea21d3b5
practice, wraparound of the packet ID sequence is
extremely unlikely since the sequence is restarted
for each mid-session TLS renegotiation. But we will
support it for completeness.
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3065 e7ae566f-a301-0410-adde-c780ea21d3b5
as well as a failure of the code to check the return value from
base64_decode.
Fixed compiler warnings in the new NTLM phase 3 code about implicit
casting between signed and unsigned char *.
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3064 e7ae566f-a301-0410-adde-c780ea21d3b5
return -1, set buf->len to 0 rather than -1. While downstream
code is set up to consider the buffer invalidated if its length
is <= 0, this change makes the code cleaner and safer.
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3061 e7ae566f-a301-0410-adde-c780ea21d3b5
to syshead.h
Introduced BUF_MAX constant to limit struct buffer offset and length
values. BUF_MAX has been set to 2^20.
Use likely() and unlikely() macros in buffer.h code to allow the
compiler to generate more efficient code.
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@3058 e7ae566f-a301-0410-adde-c780ea21d3b5
Added client authentication and packet filtering capability
to management interface.
Extended packet filtering capability to work on both --dev tun
and --dev tap tunnels.
Updated valgrind-suppress file.
Made "Linux ip addr del failed" error nonfatal.
Amplified --client-cert-not-required warning.
Added #pragma pack to proto.h.
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@2991 e7ae566f-a301-0410-adde-c780ea21d3b5
environmental variable code that could
have caused long-running OpenVPN sessions
with many TLS renegotiations to incrementally
increase memory usage over time.
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@2981 e7ae566f-a301-0410-adde-c780ea21d3b5
Support asynchronous authentication by plugins by allowing
OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY to return
OPENVPN_PLUGIN_FUNC_DEFERRED. See comments in
openvpn-plugin.h for documentation. Enabled by ENABLE_DEF_AUTH.
Added a simple packet filter functionality that can be driven by
a plugin. See comments in openvpn-plugin.h for documentation.
Enabled by ENABLE_PF.
See openvpn/plugin/defer/simple.c for examples of ENABLE_DEF_AUTH
and ENABLE_PF.
"TLS Error: local/remote TLS keys are out of sync" is no longer a
fatal error for TCP-based sessions, since the error can arise
normally in the course of deferred authentication. In a related
change, allow packet-id sequence to begin at some number n > 0 for
TCP sessions, rather than strictly requiring sequence to begin
at 1.
Added a test to configure.ac for LoadLibrary function on Windows.
Modified "make dist" function to include all files from
install-win32 so that ./domake-win can be run from a
tarball-expanded directory.
setenv and setenv-safe directives may now omit a value argument
which defaults to "".
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@2978 e7ae566f-a301-0410-adde-c780ea21d3b5
to not be called for the top-level "generic" client template.
Added additional documentation to openvpn-plugin.h that more clearly
illustrates the full sequence and ordering of plugin callbacks
(plugin/defer/simple.c was extended to provide the raw data for this
documentation).
git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@2973 e7ae566f-a301-0410-adde-c780ea21d3b5
