diff options
Diffstat (limited to 'raddb/mods-config/sql/ippool/sqlite')
| -rw-r--r-- | raddb/mods-config/sql/ippool/sqlite/queries.conf | 148 | ||||
| -rw-r--r-- | raddb/mods-config/sql/ippool/sqlite/schema.sql | 18 |
2 files changed, 166 insertions, 0 deletions
diff --git a/raddb/mods-config/sql/ippool/sqlite/queries.conf b/raddb/mods-config/sql/ippool/sqlite/queries.conf new file mode 100644 index 0000000..46ce58e --- /dev/null +++ b/raddb/mods-config/sql/ippool/sqlite/queries.conf @@ -0,0 +1,148 @@ +# -*- text -*- +# +# ippool/sqlite/queries.conf -- SQLite queries for rlm_sqlippool +# +# $Id$ + +# +# SQLite does not implement SELECT FOR UPDATE which is normally used to place +# an exclusive lock over rows to prevent the same address from being +# concurrently selected for allocation to multiple users. +# +# The most granular read-blocking lock that SQLite has is an exclusive lock +# over the database, so that's what we use. All locking in SQLite is performed +# over the entire database and we perform a row update for any IP that we +# allocate, requiring an exclusive lock. Taking the exclusive lock from the +# start of the transaction (even if it were not required to guard the SELECT) +# is actually quicker than if we deferred it causing SQLite to "upgrade" the +# automatic shared lock for the transaction to an exclusive lock for the +# subsequent UPDATE. +# +allocate_begin = "BEGIN EXCLUSIVE" +allocate_commit = "COMMIT" + +# +# This series of queries allocates an IP address +# + +# +# Attempt to allocate the address a client previously had. This is based on pool_key +# and nasipaddress. Change the criteria if the identifier for "stickyness" is different. +# If different criteria are used, check the indexes on the IP pool table to ensure the fields +# are appropriately indexed. To disable stickyness comment out this query. +# +allocate_existing = "\ + SELECT framedipaddress \ + FROM ${ippool_table} \ + WHERE pool_name = '%{control:${pool_name}}' \ + AND nasipaddress = '%{NAS-IP-Address}' AND pool_key = '${pool_key}' \ + ORDER BY expiry_time DESC \ + LIMIT 1" + +# +# Find a free IP address from the pool, choosing the oldest expired one. +# +allocate_find = "\ + SELECT framedipaddress \ + FROM ${ippool_table} \ + WHERE pool_name = '%{control:${pool_name}}' \ + expiry_time < datetime('now') \ + ORDER BY expiry_time \ + LIMIT 1" + +# +# If you prefer to allocate a random IP address every time, i +# use this query instead +# Note: This is very slow if you have a lot of free IPs. +# + +#allocate_find = "\ +# SELECT framedipaddress \ +# FROM ${ippool_table} \ +# WHERE pool_name = '%{control:${pool_name}}' \ +# AND expiry_time IS NULL \ +# ORDER BY RAND() \ +# LIMIT 1" + +# +# If an IP could not be allocated, check to see if the pool exists or not +# This allows the module to differentiate between a full pool and no pool +# Note: If you are not running redundant pool modules this query may be +# commented out to save running this query every time an ip is not allocated. +# +pool_check = "\ + SELECT id \ + FROM ${ippool_table} \ + WHERE pool_name='%{control:${pool_name}}' \ + LIMIT 1" + +# +# This is the final IP Allocation query, which saves the allocated ip details +# +allocate_update = "\ + UPDATE ${ippool_table} \ + SET \ + nasipaddress = '%{NAS-IP-Address}', \ + pool_key = '${pool_key}', \ + callingstationid = '%{Calling-Station-Id}', \ + username = '%{User-Name}', \ + expiry_time = datetime(strftime('%%s', 'now') + ${lease_duration}, 'unixepoch') \ + WHERE framedipaddress = '%I'" + +# +# Extend an IP expiry time when an accounting START record arrives +# +start_update = "\ + UPDATE ${ippool_table} \ + SET \ + expiry_time = datetime(strftime('%%s', 'now') + ${lease_duration}, 'unixepoch') \ + WHERE nasipaddress = '%{NAS-IP-Address}' \ + AND pool_key = '${pool_key}' \ + AND username = '%{User-Name}' \ + AND callingstationid = '%{Calling-Station-Id}' \ + AND framedipaddress = '%{${attribute_name}}'" + +# +# Expire an IP when an accounting STOP record arrives +# +stop_clear = "\ + UPDATE ${ippool_table} \ + SET \ + expiry_time = datetime('now') \ + WHERE nasipaddress = '%{%{Nas-IP-Address}:-%{Nas-IPv6-Address}}' \ + AND pool_key = '${pool_key}' \ + AND username = '%{User-Name}' \ + AND callingstationid = '%{Calling-Station-Id}' \ + AND framedipaddress = '%{${attribute_name}}'" + +# +# Update the expiry time for an IP when an accounting ALIVE record arrives +# +alive_update = "\ + UPDATE ${ippool_table} \ + SET \ + expiry_time = datetime(strftime('%%s', 'now') + ${lease_duration}, 'unixepoch') \ + WHERE nasipaddress = '%{%{Nas-IP-Address}:-%{Nas-IPv6-Address}}' \ + AND pool_key = '${pool_key}' \ + AND username = '%{User-Name}' \ + AND callingstationid = '%{Calling-Station-Id}' \ + AND framedipaddress = '%{${attribute_name}}'" + +# +# Expires all IPs allocated to a NAS when an accounting ON record arrives +# +on_clear = "\ + UPDATE ${ippool_table} \ + SET \ + expiry_time = datetime('now') \ + WHERE nasipaddress = '%{%{Nas-IP-Address}:-%{Nas-IPv6-Address}}'" + +# +# Expires all IPs allocated to a NAS when an accounting OFF record arrives +# +off_clear = "\ + UPDATE ${ippool_table} \ + SET \ + expiry_time = datetime('now') \ + WHERE nasipaddress = '%{%{Nas-IP-Address}:-%{Nas-IPv6-Address}}'" + diff --git a/raddb/mods-config/sql/ippool/sqlite/schema.sql b/raddb/mods-config/sql/ippool/sqlite/schema.sql new file mode 100644 index 0000000..b020c62 --- /dev/null +++ b/raddb/mods-config/sql/ippool/sqlite/schema.sql @@ -0,0 +1,18 @@ +-- +-- Table structure for table 'radippool' +-- +CREATE TABLE radippool ( + id int(11) PRIMARY KEY, + pool_name varchar(30) NOT NULL, + framedipaddress varchar(15) NOT NULL default '', + nasipaddress varchar(15) NOT NULL default '', + calledstationid VARCHAR(30) NOT NULL default '', + callingstationid VARCHAR(30) NOT NULL default '', + expiry_time DATETIME NOT NULL default (DATETIME('now')), + username varchar(64) NOT NULL default '', + pool_key varchar(30) NOT NULL default '' +); + +CREATE INDEX radippool_poolname_expire ON radippool(pool_name, expiry_time); +CREATE INDEX radippool_framedipaddress ON radippool(framedipaddress); +CREATE INDEX radippool_nasip_poolkey_ipaddress ON radippool(nasipaddress, pool_key, framedipaddress); |