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Jouni Malinen 3c108b7573 EAP peer: External server certificate chain validation 
This adds support for optional functionality to validate server
certificate chain in TLS-based EAP methods in an external program.
wpa_supplicant control interface is used to indicate when such
validation is needed and what the result of the external validation is.

This external validation can extend or replace the internal validation.
When ca_cert or ca_path parameter is set, the internal validation is
used. If these parameters are omitted, only the external validation is
used. It needs to be understood that leaving those parameters out will
disable most of the validation steps done with the TLS library and that
configuration is not really recommend.

By default, the external validation is not used. It can be enabled by
addingtls_ext_cert_check=1 into the network profile phase1 parameter.
When enabled, external validation is required through the CTRL-REQ/RSP
mechanism similarly to other EAP authentication parameters through the
control interface.

The request to perform external validation is indicated by the following
event:
CTRL-REQ-EXT_CERT_CHECK-<id>:External server certificate validation needed for SSID <ssid>

Before that event, the server certificate chain is provided with the
CTRL-EVENT-EAP-PEER-CERT events that include the cert=<hexdump>
parameter. depth=# indicates which certificate is in question (0 for the
server certificate, 1 for its issues, and so on).

The result of the external validation is provided with the following
command:
CTRL-RSP-EXT_CERT_CHECK-<id>:<good|bad>

It should be noted that this is currently enabled only for OpenSSL (and
BoringSSL/LibreSSL). Due to the constraints in the library API, the
validation result from external processing cannot be reported cleanly
with TLS alert. In other words, if the external validation reject the
server certificate chain, the pending TLS handshake is terminated
without sending more messages to the server.

Signed-off-by: Jouni Malinen <j@w1.fi>
2015-12-12 18:24:27 +02:00
doc dbus: Add support for vendor specific elements 2015-12-06 12:50:13 +02:00
eap_example eap_example: Fix configuration by added DH parameters 2015-04-17 11:26:36 +03:00
hostapd Use proper build config for parsing proxy_arp 2015-12-05 21:03:00 +02:00
hs20 EST: Comment out X509_REQ_print calls on Android with BoringSSL 2015-12-04 20:08:31 +02:00
mac80211_hwsim/tools Remove obsolete mac80211_hwsim tests 2015-10-01 12:46:10 +03:00
patches Add OpenSSL 0.9.8zf patch for EAP-FAST support 2015-03-24 16:48:04 +02:00
radius_example Fix radius_example build 2014-04-04 23:05:59 +03:00
src EAP peer: External server certificate chain validation 2015-12-12 18:24:27 +02:00
tests tests: Fix wpas_ctrl_country and dbus_country with valid db.txt 2015-12-12 12:45:30 +02:00
wlantest wlantest: Add -N command line argument to remove write buffering 2015-11-27 00:10:53 +02:00
wpa_supplicant EAP peer: External server certificate chain validation 2015-12-12 18:24:27 +02:00
wpadebug wpadebug: Add option to ignore SSL errors 2013-06-07 20:21:00 +03:00
wpaspy wpaspy: Handle DETACH response more robustly 2014-04-28 16:54:09 +03:00
.gitignore Add test programs for checking libwpa_client linking 2015-10-31 21:56:59 +02:00
Android.mk Treat VER_2_1_DEVEL the same as VER_0_8_X 2013-12-14 21:23:39 -08:00
build_release Include CONTRIBUTIONS file in the release tarballs 2014-06-04 16:26:14 +03:00
CONTRIBUTIONS Describe preferred mechanism for submitting contributions 2015-11-01 21:15:08 +02:00
COPYING Update copyright notices for the new year 2015 2015-01-27 01:43:55 +02:00
README Update copyright notices for the new year 2015 2015-01-27 01:43:55 +02:00

README 

wpa_supplicant and hostapd
--------------------------

Copyright (c) 2002-2015, Jouni Malinen <j@w1.fi> and contributors
All Rights Reserved.

These programs are licensed under the BSD license (the one with
advertisement clause removed).

If you are submitting changes to the project, please see CONTRIBUTIONS
file for more instructions.


This package may include either wpa_supplicant, hostapd, or both. See
README file respective subdirectories (wpa_supplicant/README or
hostapd/README) for more details.

Source code files were moved around in v0.6.x releases and compared to
earlier releases, the programs are now built by first going to a
subdirectory (wpa_supplicant or hostapd) and creating build
configuration (.config) and running 'make' there (for Linux/BSD/cygwin
builds).


License
-------

This software may be distributed, used, and modified under the terms of
BSD license:

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.

3. Neither the name(s) of the above-listed copyright holder(s) nor the
   names of its contributors may be used to endorse or promote products
   derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.