Hi everyone, I have a freeRADIUS 2.0.4 server which has been running well for the past two years. I am trying to integrate smoothly a modified version of the chap module. To do that I've been testing different approach on a VM for tests. With the sources downloaded from packages.debian.org, I wrote my version of rlm_chap.c. Everything compiles and works fine when i do: ./configure make make install from the source folder and run it with *radiusd*. NB: To avoid lib conflicts i remove the libs generated in /usr/local/lib during installation before i start again /usr/sbin/freeradius But now i would like to update my working version of freeradius (which was installed through an apt-get install) without causing much trouble. As I only modified rlm_chap.c I thought i could simply replace the current library /usr/lib/rlm_chap-2.0.4.so with the one produced during compilation freeradius-2.0.4/src/modules/rlm_chap/.libs/rlm_chap-2.0.4.so After that i restart freeradius (the apt-get version) with freeradius -X Everything looks fine but when i send a request i get a segmentation fault when the server tries to enter chap module. (see the debug entry further) If i go back and replace /usr/lib/freeradius/rlm_chap-2.0.4.so by the original Everything works fine again. I am pretty sure it has something to do with compilation and the way files were generated. Do you think it is possible to do what I want? i.e. inserting a modified library into the working set of library. Reinstalling the working freeradius or using the compiled files is not an possibility. If you have any idea on what I am doing wrong (I am still a beginner and I probably do a lot of things wrong), please feel free to tell me and to share with me if you had similar situations. Thanks ! Regards, Yoann Couble PS: *tldr: I want to replace chap library by a modified library of mine* Here is the debug entry ------------------------------------------------------------------------------------------------------------------------------------------- # freeradius -X FreeRADIUS Version 2.0.4, for host x86_64-pc-linux-gnu, built on Sep 11 2012 at 17:06:46 Copyright (C) 1999-2009 The FreeRADIUS server project and contributors. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. You may redistribute copies of FreeRADIUS under the terms of the GNU General Public License v2. Starting - reading configuration files ... including configuration file /etc//radiusd.conf including configuration file /etc//proxy.conf including configuration file /etc//clients.conf including files in directory /etc//modules/ including configuration file /etc//modules/digest including configuration file /etc//modules/linelog including configuration file /etc//modules/always including configuration file /etc//modules/dynamic_clients including configuration file /etc//modules/opendirectory including configuration file /etc//modules/cui including configuration file /etc//modules/unix including configuration file /etc//modules/inner-eap including configuration file /etc//modules/mschap including configuration file /etc//modules/attr_filter including configuration file /etc//modules/chap including configuration file /etc//modules/sql_log including configuration file /etc//modules/pap including configuration file /etc//modules/exec including configuration file /etc//modules/expiration including configuration file /etc//modules/ntlm_auth including configuration file /etc//modules/acct_unique including configuration file /etc//modules/counter including configuration file /etc//modules/perl including configuration file /etc//modules/checkval including configuration file /etc//modules/sqlcounter_expire_on_login including configuration file /etc//modules/logintime including configuration file /etc//modules/radutmp including configuration file /etc//modules/echo including configuration file /etc//modules/detail including configuration file /etc//modules/preprocess including configuration file /etc//modules/smsotp including configuration file /etc//modules/krb5 including configuration file /etc//modules/files including configuration file /etc//modules/sradutmp including configuration file /etc//modules/ldap including configuration file /etc//modules/realm including configuration file /etc//modules/ippool including configuration file /etc//modules/detail.example.com including configuration file /etc//modules/etc_group including configuration file /etc//modules/smbpasswd including configuration file /etc//modules/attr_rewrite including configuration file /etc//modules/passwd including configuration file /etc//modules/policy including configuration file /etc//modules/detail.log including configuration file /etc//modules/mac2ip including configuration file /etc//modules/otp including configuration file /etc//modules/pam including configuration file /etc//modules/wimax including configuration file /etc//modules/expr including configuration file /etc//modules/mac2vlan including configuration file /etc//eap.conf including configuration file /etc//sql.conf including configuration file /etc//sql//dialup.conf including configuration file /etc//policy.conf including files in directory /etc//sites-enabled/ including configuration file /etc//sites-enabled/default including configuration file /etc//sites-enabled/inner-tunnel main { user = "freerad" group = "freerad" allow_core_dumps = no } including dictionary file /etc//dictionary main { prefix = "/usr" localstatedir = "/var" logdir = "/var/log/freeradius" libdir = "/usr/lib/freeradius" radacctdir = "/var/log/freeradius/radacct" hostname_lookups = no max_request_time = 30 cleanup_delay = 5 max_requests = 1024 pidfile = "/var/run/freeradius/freeradius.pid" checkrad = "/usr/sbin/checkrad" debug_level = 0 proxy_requests = yes log { stripped_names = no auth = no auth_badpass = no auth_goodpass = no } security { max_attributes = 200 reject_delay = 1 status_server = yes } } radiusd: #### Loading Realms and Home Servers #### proxy server { retry_delay = 5 retry_count = 3 default_fallback = no dead_time = 120 wake_all_if_all_dead = no } home_server localhost { ipaddr = 127.0.0.1 port = 1812 type = "auth" secret = "testing123" response_window = 20 max_outstanding = 65536 require_message_authenticator = yes zombie_period = 40 status_check = "status-server" ping_interval = 30 check_interval = 30 num_answers_to_alive = 3 num_pings_to_alive = 3 revive_interval = 120 status_check_timeout = 4 irt = 2 mrt = 16 mrc = 5 mrd = 30 } home_server_pool my_auth_failover { type = fail-over home_server = localhost } realm example.com { auth_pool = my_auth_failover } realm LOCAL { } radiusd: #### Loading Clients #### client 0.0.0.0/1 { require_message_authenticator = no secret = "secret" } client 128.0.0.0/1 { require_message_authenticator = no secret = "secret" } radiusd: #### Instantiating modules #### instantiate { Module: Linked to module rlm_exec Module: Instantiating module "exec" from file /etc//modules/exec exec { wait = no input_pairs = "request" shell_escape = yes } Module: Linked to module rlm_expr Module: Instantiating module "expr" from file /etc//modules/expr Module: Linked to module rlm_expiration Module: Instantiating module "expiration" from file /etc//modules/expiration expiration { reply-message = "Password Has Expired " } Module: Linked to module rlm_logintime Module: Instantiating module "logintime" from file /etc//modules/logintime logintime { reply-message = "You are calling outside your allowed timespan " minimum-timeout = 60 } } radiusd: #### Loading Virtual Servers #### server inner-tunnel { # from file /etc//sites-enabled/inner-tunnel modules { Module: Checking authenticate {...} for more modules to load Module: Linked to module rlm_pap Module: Instantiating module "pap" from file /etc//modules/pap pap { encryption_scheme = "auto" auto_header = no } Module: Linked to module rlm_chap Module: Instantiating module "chap" from file /etc//modules/chap Module: Linked to module rlm_mschap Module: Instantiating module "mschap" from file /etc//modules/mschap mschap { use_mppe = yes require_encryption = no require_strong = no with_ntdomain_hack = no } Module: Linked to module rlm_unix Module: Instantiating module "unix" from file /etc//modules/unix unix { radwtmp = "/var/log/freeradius/radwtmp" } Module: Linked to module rlm_eap Module: Instantiating module "eap" from file /etc//eap.conf eap { default_eap_type = "md5" timer_expire = 60 ignore_unknown_eap_types = no cisco_accounting_username_bug = no max_sessions = 4096 } Module: Linked to sub-module rlm_eap_md5 Module: Instantiating eap-md5 Module: Linked to sub-module rlm_eap_leap Module: Instantiating eap-leap Module: Linked to sub-module rlm_eap_gtc Module: Instantiating eap-gtc gtc { challenge = "Password: " auth_type = "PAP" } Module: Linked to sub-module rlm_eap_tls Module: Instantiating eap-tls tls { rsa_key_exchange = no dh_key_exchange = yes rsa_key_length = 512 dh_key_length = 512 verify_depth = 0 CA_path = "/etc/freeradius/certs" pem_file_type = yes private_key_file = "/etc/freeradius/certs/server.key" certificate_file = "/etc/freeradius/certs/server.pem" CA_file = "/etc/freeradius/certs/ca.pem" private_key_password = "whatever" dh_file = "/etc/freeradius/certs/dh" random_file = "/dev/urandom" fragment_size = 1024 include_length = yes check_crl = no cipher_list = "DEFAULT" make_cert_command = "/etc/freeradius/certs/bootstrap" cache { enable = no lifetime = 24 max_entries = 255 } verify { } } Module: Linked to sub-module rlm_eap_ttls Module: Instantiating eap-ttls ttls { default_eap_type = "md5" copy_request_to_tunnel = no use_tunneled_reply = no virtual_server = "inner-tunnel" include_length = yes } Module: Linked to sub-module rlm_eap_peap Module: Instantiating eap-peap peap { default_eap_type = "mschapv2" copy_request_to_tunnel = no use_tunneled_reply = no proxy_tunneled_request_as_eap = yes virtual_server = "inner-tunnel" } Module: Linked to sub-module rlm_eap_mschapv2 Module: Instantiating eap-mschapv2 mschapv2 { with_ntdomain_hack = no } Module: Checking authorize {...} for more modules to load Module: Linked to module rlm_realm Module: Instantiating module "suffix" from file /etc//modules/realm realm suffix { format = "suffix" delimiter = "@" ignore_default = no ignore_null = no } Module: Linked to module rlm_files Module: Instantiating module "files" from file /etc//modules/files files { usersfile = "/etc/freeradius/users" acctusersfile = "/etc/freeradius/acct_users" preproxy_usersfile = "/etc/freeradius/preproxy_users" compat = "no" } Module: Checking session {...} for more modules to load Module: Linked to module rlm_radutmp Module: Instantiating module "radutmp" from file /etc//modules/radutmp radutmp { filename = "/var/log/freeradius/radutmp" username = "%{User-Name}" case_sensitive = yes check_with_nas = yes perm = 384 callerid = yes } Module: Checking post-proxy {...} for more modules to load Module: Checking post-auth {...} for more modules to load Module: Linked to module rlm_attr_filter Module: Instantiating module "attr_filter.access_reject" from file /etc/ /modules/attr_filter attr_filter attr_filter.access_reject { attrsfile = "/etc/freeradius/attrs.access_reject" key = "%{User-Name}" } } # modules } # server server { # from file /etc//radiusd.conf modules { Module: Checking authenticate {...} for more modules to load Module: Linked to module rlm_digest Module: Instantiating module "digest" from file /etc//modules/digest Module: Checking authorize {...} for more modules to load Module: Linked to module rlm_preprocess Module: Instantiating module "preprocess" from file /etc//modules/preprocess preprocess { huntgroups = "/etc/freeradius/huntgroups" hints = "/etc/freeradius/hints" with_ascend_hack = no ascend_channels_per_line = 23 with_ntdomain_hack = no with_specialix_jetstream_hack = no with_cisco_vsa_hack = no with_alvarion_vsa_hack = no } Module: Linked to module rlm_sql Module: Instantiating module "sql" from file /etc//sql.conf sql { driver = "rlm_sql_mysql" server = "localhost" port = "" login = "radius" password = "radpass" radius_db = "radius" read_groups = yes sqltrace = no sqltracefile = "/var/log/freeradius/sqltrace.sql" readclients = no deletestalesessions = yes num_sql_socks = 5 lifetime = 0 max_queries = 0 sql_user_name = "%{User-Name}" default_user_profile = "" nas_query = "SELECT id, nasname, shortname, type, secret, server FROM nas" authorize_check_query = "SELECT id, username, attribute, value, op FROM radcheck WHERE username = '%{SQL-User-Name}' ORDER BY id" authorize_reply_query = "SELECT id, username, attribute, value, op FROM radreply WHERE username = '%{SQL-User-Name}' ORDER BY id" authorize_group_check_query = "SELECT id, groupname, attribute, Value, op FROM radgroupcheck WHERE groupname = '%{Sql-Group}' ORDER BY id" authorize_group_reply_query = "SELECT id, groupname, attribute, value, op FROM radgroupreply WHERE groupname = '%{Sql-Group}' ORDER BY id" accounting_onoff_query = " UPDATE radacct SET acctstoptime = '%S', acctsessiontime = unix_timestamp('%S') - unix_timestamp(acctstarttime), acctterminatecause = '%{Acct-Terminate-Cause}', acctstopdelay = %{%{Acct-Delay-Time}:-0} WHERE acctstoptime IS NULL AND nasipaddress = '%{NAS-IP-Address}' AND acctstarttime <= '%S'" accounting_update_query = " UPDATE radacct SET framedipaddress = '%{Framed-IP-Address}', acctsessiontime = '%{Acct-Session-Time}', acctinputoctets = '%{%{Acct-Input-Gigawords}:-0}' << 32 | '%{%{Acct-Input-Octets}:-0}', acctoutputoctets = '%{%{Acct-Output-Gigawords}:-0}' << 32 | '%{%{Acct-Output-Octets}:-0}' WHERE acctsessionid = '%{Acct-Session-Id}' AND username = '%{SQL-User-Name}' AND nasipaddress = '%{NAS-IP-Address}'" accounting_update_query_alt = " INSERT INTO radacct (acctsessionid, acctuniqueid, username, realm, nasipaddress, nasportid, nasporttype, acctstarttime, acctsessiontime, acctauthentic, connectinfo_start, acctinputoctets, acctoutputoctets, calledstationid, callingstationid, servicetype, framedprotocol, framedipaddress, acctstartdelay, xascendsessionsvrkey) VALUES ('%{Acct-Session-Id}', '%{Acct-Unique-Session-Id}', '%{SQL-User-Name}', '%{Realm}', '%{NAS-IP-Address}', '%{NAS-Port}', '%{NAS-Port-Type}', DATE_SUB('%S', INTERVAL (%{%{Acct-Session-Time}:-0} + %{%{Acct-Delay-Time}:-0}) SECOND), '%{Acct-Session-Time}', '%{Acct-Authentic}', '', '%{%{Acct-Input-Gigawords}:-0}' << 32 | '%{%{Acct-Input-Octets}:-0}', '%{%{Acct-Output-Gigawords}:-0}' << 32 | '%{%{Acct-Output-Octets}:-0}', '%{Called-Station-Id}', '%{Calling-Station-Id}', '%{Service-Type}', '%{Framed-Protocol}', '%{Framed-IP-Address}', '0', '%{X-Ascend-Session-Svr-Key}')" accounting_start_query = " INSERT INTO radacct (acctsessionid, acctuniqueid, username, realm, nasipaddress, nasportid, nasporttype, acctstarttime, acctstoptime, acctsessiontime, acctauthentic, connectinfo_start, connectinfo_stop, acctinputoctets, acctoutputoctets, calledstationid, callingstationid, acctterminatecause, servicetype, framedprotocol, framedipaddress, acctstartdelay, acctstopdelay, xascendsessionsvrkey) VALUES ('%{Acct-Session-Id}', '%{Acct-Unique-Session-Id}', '%{SQL-User-Name}', '%{Realm}', '%{NAS-IP-Address}', '%{NAS-Port}', '%{NAS-Port-Type}', '%S', NULL, '0', '%{Acct-Authentic}', '%{Connect-Info}', '', '0', '0', '%{Called-Station-Id}', '%{Calling-Station-Id}', '', '%{Service-Type}', '%{Framed-Protocol}', '%{Framed-IP-Address}', '%{%{Acct-Delay-Time}:-0}', '0', '%{X-Ascend-Session-Svr-Key}')" accounting_start_query_alt = " UPDATE radacct SET acctstarttime = '%S', acctstartdelay = '%{%{Acct-Delay-Time}:-0}', connectinfo_start = '%{Connect-Info}' WHERE acctsessionid = '%{Acct-Session-Id}' AND username = '%{SQL-User-Name}' AND nasipaddress = '%{NAS-IP-Address}'" accounting_stop_query = " UPDATE radacct SET acctstoptime = '%S', acctsessiontime = '%{Acct-Session-Time}', acctinputoctets = '%{%{Acct-Input-Gigawords}:-0}' << 32 | '%{%{Acct-Input-Octets}:-0}', acctoutputoctets = '%{%{Acct-Output-Gigawords}:-0}' << 32 | '%{%{Acct-Output-Octets}:-0}', acctterminatecause = '%{Acct-Terminate-Cause}', acctstopdelay = '%{%{Acct-Delay-Time}:-0}', connectinfo_stop = '%{Connect-Info}' WHERE acctsessionid = '%{Acct-Session-Id}' AND username = '%{SQL-User-Name}' AND nasipaddress = '%{NAS-IP-Address}'" accounting_stop_query_alt = " INSERT INTO radacct (acctsessionid, acctuniqueid, username, realm, nasipaddress, nasportid, nasporttype, acctstarttime, acctstoptime, acctsessiontime, acctauthentic, connectinfo_start, connectinfo_stop, acctinputoctets, acctoutputoctets, calledstationid, callingstationid, acctterminatecause, servicetype, framedprotocol, framedipaddress, acctstartdelay, acctstopdelay) VALUES ('%{Acct-Session-Id}', '%{Acct-Unique-Session-Id}', '%{SQL-User-Name}', '%{Realm}', '%{NAS-IP-Address}', '%{NAS-Port}', '%{NAS-Port-Type}', DATE_SUB('%S', INTERVAL (%{%{Acct-Session-Time}:-0} + %{%{Acct-Delay-Time}:-0}) SECOND), '%S', '%{Acct-Session-Time}', '%{Acct-Authentic}', '', '%{Connect-Info}', '%{%{Acct-Input-Gigawords}:-0}' << 32 | '%{%{Acct-Input-Octets}:-0}', '%{%{Acct-Output-Gigawords}:-0}' << 32 | '%{%{Acct-Output-Octets}:-0}', '%{Called-Station-Id}', '%{Calling-Station-Id}', '%{Acct-Terminate-Cause}', '%{Service-Type}', '%{Framed-Protocol}', '%{Framed-IP-Address}', '0', '%{%{Acct-Delay-Time}:-0}')" group_membership_query = "SELECT groupname FROM radusergroup WHERE username = '%{SQL-User-Name}' ORDER BY priority" connect_failure_retry_delay = 60 simul_count_query = "" simul_verify_query = "SELECT radacctid, acctsessionid, username, nasipaddress, nasportid, framedipaddress, callingstationid, framedprotocol FROM radacct WHERE username = '%{SQL-User-Name}' AND acctstoptime IS NULL" postauth_query = "INSERT INTO radpostauth (username, pass, reply, authdate) VALUES ( '%{User-Name}', '%{%{User-Password}:-%{Chap-Password}}', '%{reply:Packet-Type}', '%S')" safe-characters = "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /" } rlm_sql (sql): Driver rlm_sql_mysql (module rlm_sql_mysql) loaded and linked rlm_sql (sql): Attempting to connect to root@localhost:/radius rlm_sql (sql): starting 0 rlm_sql (sql): Attempting to connect rlm_sql_mysql #0 rlm_sql_mysql: Starting connect to MySQL server for #0 rlm_sql (sql): Connected new DB handle, #0 rlm_sql (sql): starting 1 rlm_sql (sql): Attempting to connect rlm_sql_mysql #1 rlm_sql_mysql: Starting connect to MySQL server for #1 rlm_sql (sql): Connected new DB handle, #1 rlm_sql (sql): starting 2 rlm_sql (sql): Attempting to connect rlm_sql_mysql #2 rlm_sql_mysql: Starting connect to MySQL server for #2 rlm_sql (sql): Connected new DB handle, #2 rlm_sql (sql): starting 3 rlm_sql (sql): Attempting to connect rlm_sql_mysql #3 rlm_sql_mysql: Starting connect to MySQL server for #3 rlm_sql (sql): Connected new DB handle, #3 rlm_sql (sql): starting 4 rlm_sql (sql): Attempting to connect rlm_sql_mysql #4 rlm_sql_mysql: Starting connect to MySQL server for #4 rlm_sql (sql): Connected new DB handle, #4 Module: Checking preacct {...} for more modules to load Module: Linked to module rlm_acct_unique Module: Instantiating module "acct_unique" from file /etc/ /modules/acct_unique acct_unique { key = "User-Name, Acct-Session-Id, NAS-IP-Address, Client-IP-Address, NAS-Port" } Module: Checking accounting {...} for more modules to load Module: Linked to module rlm_detail Module: Instantiating module "detail" from file /etc//modules/detail detail { detailfile = "/var/log/freeradius/radacct/%{Client-IP-Address}/detail-%Y%m%d" header = "%t" detailperm = 384 dirperm = 493 locking = no log_packet_header = no } Module: Instantiating module "attr_filter.accounting_response" from file /etc//modules/attr_filter attr_filter attr_filter.accounting_response { attrsfile = "/etc/freeradius/attrs.accounting_response" key = "%{User-Name}" } Module: Checking session {...} for more modules to load Module: Checking post-proxy {...} for more modules to load Module: Checking post-auth {...} for more modules to load } # modules } # server radiusd: #### Opening IP addresses and Ports #### listen { type = "auth" ipaddr = * port = 0 } listen { type = "acct" ipaddr = * port = 0 } listen { type = "auth" ipaddr = 127.0.0.1 port = 18120 } Listening on authentication address * port 1812 Listening on accounting address * port 1813 Listening on authentication address 127.0.0.1 port 18120 as server inner-tunnel Listening on proxy address * port 1814 Ready to process requests. rad_recv: Access-Request packet from host 213.186.50.98 port 47026, id=113, length=57 User-Name = "user1" CHAP-Password = 0x7104a64526171941a63bdee5dd7f4d8760 NAS-IP-Address = 127.0.0.1 NAS-Port = 1812 # Executing section authorize from file /etc//sites-enabled/default +- entering group authorize {...} ++[preprocess] returns ok Segmentation fault ---------------------------------------------------------------------------------------------------------------------------------