Crash on missing ldap symlink in mods-enabled?
Martin Pauly
pauly at hrz.uni-marburg.de
Wed Feb 1 17:50:37 CET 2017
Hello,
I ran into a strange effect today (FR 3.0.12 on Debian Jessie).
We use LDAP extensively, nevertheless I forgot to enable the module.
I.e. I did not create the symlink in mods-enabled because I believed
it to be part of the Debian package freeradius-ldap.
Everything else was in place, like my ldap config in mods-available/ldap
and an Auth-Type LDAP {} statement in both sites-available/default
and sites-available/inner-tunnel.
The effect then is that on server start (or even just config check)
all modules get loaded, but the first module instantiation ends in
a crash. As it turns out, the first module to be instantiated
is rlm_ldap.
While my configuration was definitely quite inconsistent,
a crash might not be what you want either.
So here is my debug output:
FreeRADIUS Version 3.0.12
Copyright (C) 1999-2016 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
For more information about these matters, see the file named COPYRIGHT
Starting - reading configuration files ...
including dictionary file /usr/share/freeradius/dictionary
including dictionary file /usr/share/freeradius/dictionary.dhcp
including dictionary file /usr/share/freeradius/dictionary.vqp
including dictionary file /etc/freeradius/dictionary
including configuration file /etc/freeradius/radiusd.conf
including configuration file /etc/freeradius/proxy.conf
including configuration file /etc/freeradius/clients.conf
including configuration file /etc/freeradius/radius_shared_secret_internal.conf
including configuration file /etc/freeradius/radius_shared_secret_internal.conf
including configuration file /etc/freeradius/radius_shared_secret_wlc-ukgm.conf
including configuration file /etc/freeradius/radius_shared_secret_wlc-ukgm.conf
including configuration file /etc/freeradius/radius_shared_secret_wlc-ukgm.conf
including configuration file /etc/freeradius/radius_shared_secret_internal.conf
including configuration file /etc/freeradius/radius_shared_secret_internal.conf
including configuration file /etc/freeradius/radius_shared_secret_internal.conf
including configuration file /etc/freeradius/radius_shared_secret_internal.conf
including configuration file /etc/freeradius/radius_shared_secret_internal.conf
including configuration file /etc/freeradius/radius_shared_secret_internal.conf
including configuration file /etc/freeradius/radius_shared_secret_internal.conf
including configuration file /etc/freeradius/radius_shared_secret_wlc.conf
including configuration file /etc/freeradius/radius_shared_secret_wlc.conf
including configuration file /etc/freeradius/radius_shared_secret_wlc.conf
including configuration file /etc/freeradius/radius_shared_secret_wlc.conf
including configuration file /etc/freeradius/radius_shared_secret_wlc.conf
including configuration file /etc/freeradius/radius_shared_secret_wlc.conf
including configuration file /etc/freeradius/radius_shared_secret_wlc.conf
including configuration file /etc/freeradius/radius_shared_secret_dfn.conf
including configuration file /etc/freeradius/radius_shared_secret_dfn.conf
including configuration file /etc/freeradius/radius_shared_secret_nagios.conf
including configuration file /etc/freeradius/radius_shared_secret_nagios.conf
including files in directory /etc/freeradius/mods-enabled/
including configuration file /etc/freeradius/mods-enabled/utf8
including configuration file /etc/freeradius/mods-enabled/unpack
including configuration file /etc/freeradius/mods-enabled/unix
including configuration file /etc/freeradius/mods-enabled/sradutmp
including configuration file /etc/freeradius/mods-enabled/soh
including configuration file /etc/freeradius/mods-enabled/replicate
including configuration file /etc/freeradius/mods-enabled/realm
including configuration file /etc/freeradius/mods-enabled/radutmp
including configuration file /etc/freeradius/mods-enabled/preprocess
including configuration file /etc/freeradius/mods-enabled/passwd
including configuration file /etc/freeradius/mods-enabled/pap
including configuration file /etc/freeradius/mods-enabled/ntlm_auth
including configuration file /etc/freeradius/mods-enabled/mschap
including configuration file /etc/freeradius/mods-enabled/logintime
including configuration file /etc/freeradius/mods-enabled/linelog
including configuration file /etc/freeradius/mods-enabled/files
including configuration file /etc/freeradius/mods-enabled/expr
including configuration file /etc/freeradius/mods-enabled/expiration
including configuration file /etc/freeradius/mods-enabled/exec
including configuration file /etc/freeradius/mods-enabled/echo
including configuration file /etc/freeradius/mods-enabled/eap
including configuration file /etc/freeradius/certs/passphrase.conf
including configuration file /etc/freeradius/mods-enabled/dynamic_clients
including configuration file /etc/freeradius/mods-enabled/digest
including configuration file /etc/freeradius/mods-enabled/detail.log
including configuration file /etc/freeradius/mods-enabled/detail
including configuration file /etc/freeradius/mods-enabled/date
including configuration file /etc/freeradius/mods-enabled/chap
including configuration file /etc/freeradius/mods-enabled/cache_eap
including configuration file /etc/freeradius/mods-enabled/attr_filter
including configuration file /etc/freeradius/mods-enabled/always
including files in directory /etc/freeradius/policy.d/
including configuration file /etc/freeradius/policy.d/abfab-tr
including configuration file /etc/freeradius/policy.d/accounting
including configuration file /etc/freeradius/policy.d/canonicalization
including configuration file /etc/freeradius/policy.d/control
including configuration file /etc/freeradius/policy.d/cui
including configuration file /etc/freeradius/policy.d/debug
including configuration file /etc/freeradius/policy.d/dhcp
including configuration file /etc/freeradius/policy.d/eap
including configuration file /etc/freeradius/policy.d/filter
including configuration file /etc/freeradius/policy.d/moonshot-targeted-ids
including configuration file /etc/freeradius/policy.d/operator-name
including files in directory /etc/freeradius/sites-enabled/
including configuration file /etc/freeradius/sites-enabled/inner-tunnel
including configuration file /etc/freeradius/sites-enabled/default
main {
security {
user = "freerad"
group = "freerad"
allow_core_dumps = no
}
name = "freeradius"
prefix = "/usr"
localstatedir = "/var"
logdir = "/var/log/freeradius"
run_dir = "/var/run/freeradius"
}
main {
name = "freeradius"
prefix = "/usr"
localstatedir = "/var"
sbindir = "/usr/sbin"
logdir = "/var/log/freeradius"
run_dir = "/var/run/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 = yes
auth_badpass = no
auth_goodpass = no
colourise = yes
msg_denied = "You are already logged in - access denied"
}
resources {
}
security {
max_attributes = 200
reject_delay = 1.000000
status_server = yes
}
}
radiusd: #### Loading Realms and Home Servers ####
realm staff.uni-marburg.de {
authhost = LOCAL
accthost = LOCAL
}
radiusd: #### Loading Clients ####
client localhost {
ipaddr = 127.0.0.1
require_message_authenticator = no
secret = <<< secret >>>
nas_type = "other"
proto = "*"
limit {
max_connections = 16
lifetime = 0
idle_timeout = 30
}
}
client localhost_ipv6 {
ipv6addr = ::1
require_message_authenticator = no
secret = <<< secret >>>
limit {
max_connections = 16
lifetime = 0
idle_timeout = 30
}
}
...
[omitted clients for brevity]
...
client wlc1 {
ipaddr = 192.168.80.1
require_message_authenticator = no
secret = <<< secret >>>
limit {
max_connections = 16
lifetime = 0
idle_timeout = 30
}
}
client wlc2 {
ipaddr = 192.168.80.2
require_message_authenticator = no
secret = <<< secret >>>
limit {
max_connections = 16
lifetime = 0
idle_timeout = 30
}
}
client radius1.dfn.de {
ipaddr = 193.174.75.134
require_message_authenticator = no
secret = <<< secret >>>
limit {
max_connections = 16
lifetime = 0
idle_timeout = 30
}
}
client radius2.dfn.de {
ipaddr = 193.174.75.138
require_message_authenticator = no
secret = <<< secret >>>
limit {
max_connections = 16
lifetime = 0
idle_timeout = 30
}
}
Debugger not attached
# Creating Auth-Type = ldap
# Creating Auth-Type = eap
# Creating Auth-Type = PAP
# Creating Auth-Type = CHAP
# Creating Auth-Type = MS-CHAP
# Creating Auth-Type = digest
radiusd: #### Instantiating modules ####
modules {
# Loaded module rlm_utf8
# Loading module "utf8" from file /etc/freeradius/mods-enabled/utf8
# Loaded module rlm_unpack
# Loading module "unpack" from file /etc/freeradius/mods-enabled/unpack
# Loaded module rlm_unix
# Loading module "unix" from file /etc/freeradius/mods-enabled/unix
unix {
radwtmp = "NULL"
}
Creating attribute Unix-Group
# Loaded module rlm_radutmp
# Loading module "sradutmp" from file /etc/freeradius/mods-enabled/sradutmp
radutmp sradutmp {
filename = "/var/log/freeradius/sradutmp"
username = "%{User-Name}"
case_sensitive = yes
check_with_nas = yes
permissions = 420
caller_id = no
}
# Loaded module rlm_soh
# Loading module "soh" from file /etc/freeradius/mods-enabled/soh
soh {
dhcp = yes
}
# Loaded module rlm_replicate
# Loading module "replicate" from file /etc/freeradius/mods-enabled/replicate
# Loaded module rlm_realm
# Loading module "IPASS" from file /etc/freeradius/mods-enabled/realm
realm IPASS {
format = "prefix"
delimiter = "/"
ignore_default = no
ignore_null = no
}
# Loading module "suffix" from file /etc/freeradius/mods-enabled/realm
realm suffix {
format = "suffix"
delimiter = "@"
ignore_default = no
ignore_null = no
}
# Loading module "realmpercent" from file /etc/freeradius/mods-enabled/realm
realm realmpercent {
format = "suffix"
delimiter = "%"
ignore_default = no
ignore_null = no
}
# Loading module "ntdomain" from file /etc/freeradius/mods-enabled/realm
realm ntdomain {
format = "prefix"
delimiter = "\\"
ignore_default = no
ignore_null = no
}
# Loading module "radutmp" from file /etc/freeradius/mods-enabled/radutmp
radutmp {
filename = "/var/log/freeradius/radutmp"
username = "%{User-Name}"
case_sensitive = yes
check_with_nas = yes
permissions = 384
caller_id = yes
}
# Loaded module rlm_preprocess
# Loading module "preprocess" from file /etc/freeradius/mods-enabled/preprocess
preprocess {
huntgroups = "/etc/freeradius/mods-config/preprocess/huntgroups"
hints = "/etc/freeradius/mods-config/preprocess/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
}
# Loaded module rlm_passwd
# Loading module "etc_passwd" from file /etc/freeradius/mods-enabled/passwd
passwd etc_passwd {
filename = "/etc/passwd"
format = "*User-Name:Crypt-Password:"
delimiter = ":"
ignore_nislike = no
ignore_empty = yes
allow_multiple_keys = no
hash_size = 100
}
# Loaded module rlm_pap
# Loading module "pap" from file /etc/freeradius/mods-enabled/pap
pap {
normalise = yes
}
# Loaded module rlm_exec
# Loading module "ntlm_auth" from file /etc/freeradius/mods-enabled/ntlm_auth
exec ntlm_auth {
wait = yes
program = "/path/to/ntlm_auth --request-nt-key --domain=MYDOMAIN --username=%{mschap:User-Name} --password=%{User-Password}"
shell_escape = yes
}
# Loaded module rlm_mschap
# Loading module "mschap" from file /etc/freeradius/mods-enabled/mschap
mschap {
use_mppe = yes
require_encryption = no
require_strong = no
with_ntdomain_hack = yes
ntlm_auth = "/usr/bin/ntlm_auth --request-nt-key --username=%{%{Stripped-User-Name}:-%{%{User-Name}:-None}} --challenge=%{%{mschap:Challenge}:-00} --nt-response=%{%{mschap:NT-Response}:-00}"
passchange {
}
allow_retry = yes
}
# Loaded module rlm_logintime
# Loading module "logintime" from file /etc/freeradius/mods-enabled/logintime
logintime {
minimum_timeout = 60
}
# Loaded module rlm_linelog
# Loading module "linelog" from file /etc/freeradius/mods-enabled/linelog
linelog {
filename = "/var/log/freeradius/linelog"
escape_filenames = no
syslog_severity = "info"
permissions = 384
format = "This is a log message for %{User-Name}"
reference = "messages.%{%{reply:Packet-Type}:-default}"
}
# Loading module "log_accounting" from file /etc/freeradius/mods-enabled/linelog
linelog log_accounting {
filename = "/var/log/freeradius/linelog-accounting"
escape_filenames = no
syslog_severity = "info"
permissions = 384
format = ""
reference = "Accounting-Request.%{%{Acct-Status-Type}:-unknown}"
}
# Loaded module rlm_files
# Loading module "files" from file /etc/freeradius/mods-enabled/files
files {
filename = "/etc/freeradius/mods-config/files/authorize"
acctusersfile = "/etc/freeradius/mods-config/files/accounting"
preproxy_usersfile = "/etc/freeradius/mods-config/files/pre-proxy"
}
# Loaded module rlm_expr
# Loading module "expr" from file /etc/freeradius/mods-enabled/expr
expr {
safe_characters = "@abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-_: /ÀéöÌà âÊçÚéêëîïÎÅùûÌaÿÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÅÃÃÅž"
}
# Loaded module rlm_expiration
# Loading module "expiration" from file /etc/freeradius/mods-enabled/expiration
# Loading module "exec" from file /etc/freeradius/mods-enabled/exec
exec {
wait = no
input_pairs = "request"
shell_escape = yes
timeout = 10
}
# Loading module "echo" from file /etc/freeradius/mods-enabled/echo
exec echo {
wait = yes
program = "/bin/echo %{User-Name}"
input_pairs = "request"
output_pairs = "reply"
shell_escape = yes
}
# Loaded module rlm_eap
# Loading module "eap" from file /etc/freeradius/mods-enabled/eap
eap {
default_eap_type = "md5"
timer_expire = 60
ignore_unknown_eap_types = no
cisco_accounting_username_bug = no
max_sessions = 1024
}
# Loaded module rlm_dynamic_clients
# Loading module "dynamic_clients" from file /etc/freeradius/mods-enabled/dynamic_clients
# Loaded module rlm_digest
# Loading module "digest" from file /etc/freeradius/mods-enabled/digest
# Loaded module rlm_detail
# Loading module "auth_log" from file /etc/freeradius/mods-enabled/detail.log
detail auth_log {
filename = "/var/log/freeradius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/auth-detail-%Y%m%d"
header = "%t"
permissions = 384
locking = no
escape_filenames = no
log_packet_header = no
}
# Loading module "reply_log" from file /etc/freeradius/mods-enabled/detail.log
detail reply_log {
filename = "/var/log/freeradius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/reply-detail-%Y%m%d"
header = "%t"
permissions = 384
locking = no
escape_filenames = no
log_packet_header = no
}
# Loading module "pre_proxy_log" from file /etc/freeradius/mods-enabled/detail.log
detail pre_proxy_log {
filename = "/var/log/freeradius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/pre-proxy-detail-%Y%m%d"
header = "%t"
permissions = 384
locking = no
escape_filenames = no
log_packet_header = no
}
# Loading module "post_proxy_log" from file /etc/freeradius/mods-enabled/detail.log
detail post_proxy_log {
filename = "/var/log/freeradius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/post-proxy-detail-%Y%m%d"
header = "%t"
permissions = 384
locking = no
escape_filenames = no
log_packet_header = no
}
# Loading module "detail" from file /etc/freeradius/mods-enabled/detail
detail {
filename = "/var/log/freeradius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/detail-%Y-%m"
header = "%t"
permissions = 384
locking = no
escape_filenames = no
log_packet_header = no
}
# Loaded module rlm_date
# Loading module "date" from file /etc/freeradius/mods-enabled/date
date {
format = "%b %e %Y %H:%M:%S %Z"
}
# Loaded module rlm_chap
# Loading module "chap" from file /etc/freeradius/mods-enabled/chap
# Loaded module rlm_cache
# Loading module "cache_eap" from file /etc/freeradius/mods-enabled/cache_eap
cache cache_eap {
driver = "rlm_cache_rbtree"
key = "%{%{control:State}:-%{%{reply:State}:-%{State}}}"
ttl = 15
max_entries = 0
epoch = 0
add_stats = no
}
# Loaded module rlm_attr_filter
# Loading module "attr_filter.post-proxy" from file /etc/freeradius/mods-enabled/attr_filter
attr_filter attr_filter.post-proxy {
filename = "/etc/freeradius/mods-config/attr_filter/post-proxy"
key = "%{Realm}"
relaxed = no
}
# Loading module "attr_filter.pre-proxy" from file /etc/freeradius/mods-enabled/attr_filter
attr_filter attr_filter.pre-proxy {
filename = "/etc/freeradius/mods-config/attr_filter/pre-proxy"
key = "%{Realm}"
relaxed = no
}
# Loading module "attr_filter.access_reject" from file /etc/freeradius/mods-enabled/attr_filter
attr_filter attr_filter.access_reject {
filename = "/etc/freeradius/mods-config/attr_filter/access_reject"
key = "%{User-Name}"
relaxed = no
}
# Loading module "attr_filter.access_challenge" from file /etc/freeradius/mods-enabled/attr_filter
attr_filter attr_filter.access_challenge {
filename = "/etc/freeradius/mods-config/attr_filter/access_challenge"
key = "%{User-Name}"
relaxed = no
}
# Loading module "attr_filter.accounting_response" from file /etc/freeradius/mods-enabled/attr_filter
attr_filter attr_filter.accounting_response {
filename = "/etc/freeradius/mods-config/attr_filter/accounting_response"
key = "%{User-Name}"
relaxed = no
}
# Loaded module rlm_always
# Loading module "reject" from file /etc/freeradius/mods-enabled/always
always reject {
rcode = "reject"
simulcount = 0
mpp = no
}
# Loading module "fail" from file /etc/freeradius/mods-enabled/always
always fail {
rcode = "fail"
simulcount = 0
mpp = no
}
# Loading module "ok" from file /etc/freeradius/mods-enabled/always
always ok {
rcode = "ok"
simulcount = 0
mpp = no
}
# Loading module "handled" from file /etc/freeradius/mods-enabled/always
always handled {
rcode = "handled"
simulcount = 0
mpp = no
}
# Loading module "invalid" from file /etc/freeradius/mods-enabled/always
always invalid {
rcode = "invalid"
simulcount = 0
mpp = no
}
# Loading module "userlock" from file /etc/freeradius/mods-enabled/always
always userlock {
rcode = "userlock"
simulcount = 0
mpp = no
}
# Loading module "notfound" from file /etc/freeradius/mods-enabled/always
always notfound {
rcode = "notfound"
simulcount = 0
mpp = no
}
# Loading module "noop" from file /etc/freeradius/mods-enabled/always
always noop {
rcode = "noop"
simulcount = 0
mpp = no
}
# Loading module "updated" from file /etc/freeradius/mods-enabled/always
always updated {
rcode = "updated"
simulcount = 0
mpp = no
}
instantiate {
--
Dr. Martin Pauly Phone: +49-6421-28-23527
HRZ Univ. Marburg Fax: +49-6421-28-26994
Hans-Meerwein-Str. E-Mail: pauly at HRZ.Uni-Marburg.DE
D-35032 Marburg
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