I'm running freeradius v. 1.1.0 and am trying to use rlm_perl to rewrite
accounting attributes before they are written to log with detail and
then replicated with radrelay. Here is the version of example.pl that
I'm using (I've only added a single statement to the preacct function):
use strict;
# use ...
# This is very important ! Without this script will not get the filled
hashesh from main.
use vars qw(%RAD_REQUEST %RAD_REPLY %RAD_CHECK);
#use Data::Dumper;
# This is hash wich hold original request from radius
#my %RAD_REQUEST;
# In this hash you add values that will be returned to NAS.
#my %RAD_REPLY;
#This is for check items
#my %RAD_CHECK;
#
# This the remapping of return values
#
use constant RLM_MODULE_REJECT=> 0;# /* immediately
reject the request */
use constant RLM_MODULE_FAIL=> 1;# /* module failed,
don't reply */
use constant RLM_MODULE_OK=> 2;# /* the module is
OK, continue */
use constant RLM_MODULE_HANDLED=> 3;# /* the module
handled the request, so stop. */
use constant RLM_MODULE_INVALID=> 4;# /* the module
considers the request invalid. */
use constant RLM_MODULE_USERLOCK=> 5;# /* reject the
request (user is locked out) */
use constant RLM_MODULE_NOTFOUND=> 6;# /* user not found */
use constant RLM_MODULE_NOOP=> 7;# /* module succeeded
without doing anything */
use constant RLM_MODULE_UPDATED=> 8;# /* OK (pairs
modified) */
use constant RLM_MODULE_NUMCODES=> 9;# /* How many return
codes there are */
# Function to handle authorize
sub authorize {
# For debugging purposes only
# &log_request_attributes;
# Here's where your authorization code comes
# You can call another function from here:
&test_call;
return RLM_MODULE_OK;
}
# Function to handle authenticate
sub authenticate {
# For debugging purposes only
# &log_request_attributes;
if ($RAD_REQUEST{'User-Name'} =~ /^baduser/i) {
# Reject user and tell him why
$RAD_REPLY{'Reply-Message'} = "Denied access by
rlm_perl function";
return RLM_MODULE_REJECT;
} else {
# Accept user and set some attribute
$RAD_REPLY{'h323-credit-amount'} = "100";
return RLM_MODULE_OK;
}
}
# Function to handle preacct
sub preacct {
# For debugging purposes only
#&log_request_attributes;
$RAD_REPLY{'Acct-Session-Id'} = "new-session-value";
return RLM_MODULE_OK;
}
# Function to handle accounting
sub accounting {
# For debugging purposes only
# &log_request_attributes;
# You can call another subroutine from here
#&test_call;
return RLM_MODULE_OK;
}
# Function to handle checksimul
sub checksimul {
# For debugging purposes only
# &log_request_attributes;
return RLM_MODULE_OK;
}
# Function to handle pre_proxy
sub pre_proxy {
# For debugging purposes only
# &log_request_attributes;
return RLM_MODULE_OK;
}
# Function to handle post_proxy
sub post_proxy {
# For debugging purposes only
# &log_request_attributes;
return RLM_MODULE_OK;
}
# Function to handle post_auth
sub post_auth {
# For debugging purposes only
# &log_request_attributes;
return RLM_MODULE_OK;
}
# Function to handle xlat
sub xlat {
# For debugging purposes only
# &log_request_attributes;
# Loads some external perl and evaluate it
my ($filename,$a,$b,$c,$d) = @_;
&radiusd::radlog(1, "From xlat $filename ");
&radiusd::radlog(1,"From xlat $a $b $c $d ");
local *FH;
open FH, $filename or die "open '$filename' $!";
local($/) = undef;
my $sub = <FH>;
close FH;
my $eval = qq{ sub handler{ $sub;} };
eval $eval;
eval {main->handler;};
}
# Function to handle detach
sub detach {
# For debugging purposes only
# &log_request_attributes;
# Do some logging.
&radiusd::radlog(0,"rlm_perl::Detaching. Reloading. Done.");
}
#
# Some functions that can be called from other functions
#
sub test_call {
# Some code goes here
}
sub log_request_attributes {
# This shouldn't be done in production environments!
# This is only meant for debugging!
for (keys %RAD_REQUEST) {
&radiusd::radlog(1, "RAD_REQUEST: $_ = $RAD_REQUEST{$_}");
}
}
Here's the output of freeradius -X:
[EMAIL PROTECTED]:/etc/freeradius# freeradius -X
...
Module: Loaded perl
perl: module = "/home/jcc/scripts/example.pl"
perl: func_authorize = "authorize"
perl: func_authenticate = "authenticate"
perl: func_accounting = "accounting"
perl: func_preacct = "preacct"
perl: func_checksimul = "checksimul"
perl: func_detach = "detach"
perl: func_xlat = "xlat"
perl: func_pre_proxy = "pre_proxy"
perl: func_post_proxy = "post_proxy"
perl: func_post_auth = "post_auth"
perl: perl_flags = "(null)"
perl: func_start_accounting = "(null)"
perl: func_stop_accounting = "(null)"
perl: max_clones = 32
perl: start_clones = 5
perl: min_spare_clones = 3
perl: max_spare_clones = 3
perl: cleanup_delay = 5
perl: max_request_per_clone = 0
Module: Instantiated perl (perl)
...
Here's my radiusd.conf:
...
modules {
perl {
module = /home/jcc/scripts/example.pl
max_clones = 32
start_clones = 5
min_spare_clones = 3
max_spare_clones = 3
cleanup_delay = 5
max_request_per_clone = 0
}
}
...
preacct {
preprocess
acct_unique
perl
suffix
files
}
accounting {
local-detail
radrelay-detail
unix
radutmp
}
...
Notice from my example.pl that I'm trying to rewrite the value for
Acct-Session-Id. The freeradius -X output shows that I've added a new
pair, Acct-Session-Id = new-session-value, but only the original value
shows up in the radacct log, not the new value:
rad_recv: Accounting-Request packet from host 127.0.0.1:32819, id=89,
length=65
User-Name = "jcc"
NAS-Port = 1
Acct-Session-Id = "accounting-session-1"
Sip-Transport-Protocol = TCP
Processing the preacct section of radiusd.conf
modcall: entering group preacct for request 0
modcall[preacct]: module "preprocess" returns noop for request 0
rlm_acct_unique: Hashing 'NAS-Port = 1,Client-IP-Address =
127.0.0.1,NAS-IP-Address = 127.0.0.1,Acct-Session-Id =
"accounting-session-1",User-Name = "jcc"'
rlm_acct_unique: Acct-Unique-Session-ID = "4f08f8eb92e050ff".
modcall[preacct]: module "acct_unique" returns ok for request 0
perl_pool: item 0x8168260 asigned new request. Handled so far: 1
found interpetator at address 0x8168260
rlm_perl: Added pair Acct-Session-Id = new-session-value
perl_pool total/active/spare [5/0/5]
Could not get @DynaLoader::dl_librefs for unloading.
Unreserve perl at address 0x8168260
modcall[preacct]: module "perl" returns ok for request 0
rlm_realm: No '@' in User-Name = "jcc", looking up realm NULL
rlm_realm: No such realm "NULL"
modcall[preacct]: module "suffix" returns noop for request 0
modcall[preacct]: module "files" returns noop for request 0
modcall: leaving group preacct (returns ok) for request 0
Processing the accounting section of radiusd.conf
modcall: entering group accounting for request 0
radius_xlat: '/var/log/freeradius/radacct/127.0.0.1/detail-20060822'
rlm_detail:
/var/log/freeradius/radacct/%{Client-IP-Address}/detail-%Y%m%d expands
to /var/log/freeradius/radacct/127.0.0.1/detail-20060822
modcall[accounting]: module "local-detail" returns ok for request 0
radius_xlat: '/var/log/freeradius/radacct/radrelay-detail'
rlm_detail: /var/log/freeradius/radacct/radrelay-detail expands to
/var/log/freeradius/radacct/radrelay-detail
rlm_detail: Acquired filelock, tried 1 time(s)
rlm_detail: Released filelock
modcall[accounting]: module "radrelay-detail" returns ok for request 0
rlm_unix: no Accounting-Status-Type attribute in request.
modcall[accounting]: module "unix" returns noop for request 0
rlm_radutmp: No Accounting-Status-Type record.
modcall[accounting]: module "radutmp" returns noop for request 0
modcall: leaving group accounting (returns ok) for request 0
Sending Accounting-Response of id 89 to 127.0.0.1 port 32819
Finished request 0
Going to the next request
--- Walking the entire request list ---
Cleaning up request 0 ID 89 with timestamp 44eb308c
Nothing to do. Sleeping until we see a request.
radrelay-detail log:
Tue Aug 22 12:27:56 2006
User-Name = "jcc"
NAS-Port = 1
Acct-Session-Id = "accounting-session-1"
Sip-Transport-Protocol = TCP
NAS-IP-Address = 127.0.0.1
Client-IP-Address = 127.0.0.1
Acct-Unique-Session-Id = "4f08f8eb92e050ff"
Timestamp = 1156264076
What am I missing?
Thanks.
-jc
-
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