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-rw-r--r--raddb/sites-available/tls-cache144
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diff --git a/raddb/sites-available/tls-cache b/raddb/sites-available/tls-cache
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+# -*- text -*-
+######################################################################
+#
+# This is a virtual server which handles TLS session caching.
+#
+# $Id$
+#
+######################################################################
+#
+# In mods-enabled/eap, "cache" subsection
+#
+# comment out
+#
+# persist_dir
+#
+# add
+#
+# virtual_server = tls-cache
+#
+# and set
+#
+# enable = yes
+#
+# In order to enable caching.
+#
+
+#
+# This virtual server SHOULD NOT have any "listen" sections.
+#
+#
+# All of the cache sections key off of &request:TLS-Session-Id
+#
+# The cache sections also run the "post-auth" section of any
+# module which they use.
+#
+# These sections do not need to return any specific codes (e.g. ok /
+# fail /etc.). The cache functionality depends only on which
+# attributes are saved / loaded.
+#
+# For example, if the "cache save" process fails, there is nothing
+# that the server can do about that. The users authentication
+# session will still succeed. The only difference from a successful
+# "cache save" is that the user will be unable to resume their
+# session. Instead, they will need to do a full re-authentication
+# process.
+#
+# Similarly for "cache load". If the session (and/or) the VPs are
+# not loaded from the cache, then the user will do a full
+# re-authentication.
+#
+# Whilst any store can be used for tls session caching, whatever is
+# chosen should be faster than performing a full re-authentication
+server tls-cache {
+
+cache clear {
+ # clear the cache entry by keying off of &request:TLS-Session-Id
+
+ # An example using redis
+# "%{redis:DEL %{request:TLS-Session-ID}}"
+
+ # An example using SQL
+# "%{sql:DELETE FROM tls_cache WHERE session_id = '%{request:TLS-Session-ID}'}"
+}
+
+cache save {
+ # use the key &request:TLS-Session-ID
+ # save &session-state:TLS-Session-Data
+ # save &reply:...
+
+ # The &reply: list is initialized to the attributes
+ # which should be saved. This includes attributes
+ # mentioned in the "store" subsection of the "cache"
+ # section configuration. This is the same set of
+ # attributes which is saved when the 'persist_dir'
+ # configuration is used.
+ #
+ # Note the "store" subsection will only copy matching
+ # attributes from the &reply: list at the time that
+ # eap authentication succeeds.
+ #
+ # Other attributes can be saved by referring to them
+ # e.g. &outer.request:...
+
+ # An example using redis
+# update {
+# &Tmp-String-0 := "%{session-state:TLS-Session-Data}|%{escape:%{reply:Tunnel-Private-Group-ID}}"
+# }
+# "%{redis: SET %{request:TLS-Session-ID} \"%{Tmp-String-0}\" EX 86400}"
+
+ # An example using SQL
+# "%{sql: INSERT INTO tls_cache (session_id, session_data, vlan, expiry) VALUES ('%{request:TLS-Session-ID}', '%{session-state:TLS-Session-Data}', '%{escape:%{reply:Tunnel-Private-Group-ID}}', DATE_ADD(NOW(), INTERVAL 24 HOUR))}"
+}
+
+cache load {
+ # use the key &request:TLS-Session-ID
+ # load &session-state:TLS-Session-Data
+ # load &reply:...
+
+ # Attributes returned in &reply: which are listed
+ # in the "store" subsection of the "cache" section
+ # configuration will be copied to &session-state:
+ #
+ # Certificate attributes returned in &reply: are added
+ # to &request: if they do not already exist and if
+ # EAP-Type is returned it is added to &control:
+ #
+ # Any other attributes returned are added to &reply:
+
+ # An example using redis
+# update {
+# &Tmp-String-0 := "%{redis:GET %{request:TLS-Session-ID}}"
+# }
+# if (!&Tmp-String-0 || &Tmp-String-0 !~ /^([^|]+)\|([^|]+)$/) {
+# return
+# }
+# update {
+# &session-state:TLS-Session-Data := "%{1}"
+# &reply:Tunnel-Private-Group-ID := "%{unescape:%{2}}"
+# }
+
+ # An example using SQL
+# update {
+# &Tmp-String-0 := "%{sql:SELECT CONCAT(session_data, '|', vlan) FROM session_cache WHERE session_id = '%{request:TLS-Session-ID}'}"
+# }
+# if (!&Tmp-String-0 || &Tmp-String-0 !~ /^([^|]+)\|([^|]+)$/) {
+# return
+# }
+# update {
+# &session-state:TLS-Session-Data := "%{1}"
+# &reply:Tunnel-Private-Group-ID := "%{unescape:%{2}}"
+# }
+}
+
+cache refresh {
+ # refresh the cache entry by keying off of &request:TLS-Session-ID
+
+ # An example using redis
+# "%{redis:EXPIRE %{request:TLS-Session-ID} 86400}"
+
+ # An example using SQL
+# "%{sql:UPDATE tls_cache SET expiry = DATE_ADD(NOW(), INTERVAL 24 HOUR) WHERE session_id = '%{request:TLS-Session-ID}'}"
+}
+
+}