Merge pull request #2038 from c-po/t141-tacacs

T141: add TACACS support

3 files changed, 154 insertions, 0 deletions

diff --git a/data/templates/login/nsswitch.conf.j2 b/data/templates/login/nsswitch.conf.j2
new file mode 100644
index 000000000..65dc88291
--- /dev/null
+++ b/data/templates/login/nsswitch.conf.j2
@@ -0,0 +1,21 @@
+# Automatically generated by system-login.py
+# /etc/nsswitch.conf
+#
+# Example configuration of GNU Name Service Switch functionality.
+
+passwd:         {{ 'mapuid ' if radius is vyos_defined }}{{ 'tacplus ' if tacacs is vyos_defined }}files{{ ' mapname' if radius is vyos_defined }}
+group:          {{ 'mapname ' if radius is vyos_defined }}{{ 'tacplus ' if tacacs is vyos_defined }}files
+shadow:         files
+gshadow:        files
+
+# Per T2678, commenting out myhostname
+hosts:          files dns #myhostname
+networks:       files
+
+protocols:      db files
+services:       db files
+ethers:         db files
+rpc:            db files
+
+netgroup:       nis
+
diff --git a/data/templates/login/tacplus_nss.conf.j2 b/data/templates/login/tacplus_nss.conf.j2
new file mode 100644
index 000000000..2a30b1710
--- /dev/null
+++ b/data/templates/login/tacplus_nss.conf.j2
@@ -0,0 +1,74 @@
+#%NSS_TACPLUS-1.0
+# Install this file as /etc/tacplus_nss.conf
+# Edit /etc/nsswitch.conf to add tacplus to the passwd lookup, similar to this
+# where tacplus precede compat (or files), and depending on local policy can
+# follow or precede ldap, nis, etc.
+#    passwd: tacplus compat
+#
+#  Servers are tried in the order listed, and once a server
+#  replies, no other servers are attempted in a given process instantiation
+#
+#  This configuration is similar to the libpam_tacplus configuration, but
+#  is maintained as a configuration file, since nsswitch.conf doesn't
+#  support passing parameters.  Parameters must start in the first
+#  column, and parsing stops at the first whitespace
+
+# if set, errors and other issues are logged with syslog
+#debug=1
+
+# min_uid is the minimum uid to lookup via tacacs.  Setting this to 0
+# means uid 0 (root) is never looked up, good for robustness and performance
+# Cumulus Linux ships with it set to 1001, so we never lookup our standard
+# local users, including the cumulus uid of 1000.  Should not be greater
+# than the local tacacs{0..15} uids
+min_uid=900
+
+# This is a comma separated list of usernames that are never sent to
+# a tacacs server, they cause an early not found return.
+#
+# "*" is not a wild card.  While it's not a legal username, it turns out
+# that during pathname completion, bash can do an NSS lookup on "*"
+# To avoid server round trip delays, or worse, unreachable server delays
+# on filename completion, we include "*" in the exclusion list.
+exclude_users=root,telegraf,radvd,strongswan,tftp,conservr,frr,ocserv,pdns,_chrony,_lldpd,sshd,openvpn,radius_user,radius_priv_user,*{{ ',' + user | join(',') if user is vyos_defined }}
+
+# The include keyword allows centralizing the tacacs+ server information
+# including the IP address and shared secret
+# include=/etc/tacplus_servers
+
+#  The server IP address can be optionally followed by a ':' and a port
+#  number (server=1.1.1.1:49).  It is strongly recommended that you NOT
+#  add secret keys to this file, because it is world readable.
+{% if tacacs.server is vyos_defined %}
+{%     for server, server_config in tacacs.server.items() %}
+secret={{ server_config.key }}
+server={{ server }}:{{ server_config.port }}
+
+{%     endfor %}
+{% endif %}
+
+{% if tacacs.vrf is vyos_defined %}
+# If the management network is in a vrf, set this variable to the vrf name.
+# This would usually be "mgmt". When this variable is set, the connection to the
+# TACACS+ accounting servers will be made through the named vrf.
+vrf={{ tacacs.vrf }}
+{% endif %}
+
+{% if tacacs.source_address is vyos_defined %}
+# Sets the IPv4 address used as the source IP address when communicating with
+# the TACACS+ server. IPv6 addresses are not supported, nor are hostnames.
+# The address must work when passsed to the bind() system call, that is, it must
+# be valid for the interface being used.
+source_ip={{ tacacs.source_address }}
+{% endif %}
+
+# The connection timeout for an NSS library should be short, since it is
+# invoked for many programs and daemons, and a failure is usually not
+# catastrophic.  Not set or set to a negative value disables use of poll().
+# This follows the include of tacplus_servers, so it can override any
+# timeout value set in that file.
+# It's important to have this set in this file, even if the same value
+# as in tacplus_servers, since tacplus_servers should not be readable
+# by users other than root.
+timeout={{ tacacs.timeout }}
+
diff --git a/data/templates/login/tacplus_servers.j2 b/data/templates/login/tacplus_servers.j2
new file mode 100644
index 000000000..5a65d6e68
--- /dev/null
+++ b/data/templates/login/tacplus_servers.j2
@@ -0,0 +1,59 @@
+# Automatically generated by system-login.py
+# TACACS+ configuration file
+
+# This is a common file used by audisp-tacplus, libpam_tacplus, and
+# libtacplus_map config files as shipped.
+#
+# Any tac_plus client config can go here that is common to all users of this
+# file, but typically it's just the TACACS+ server IP address(es) and shared
+# secret(s)
+#
+# This file should normally be mode 600, if you care about the security of your
+# secret key. When set to mode 600 NSS lookups for TACACS users will only work
+# for tacacs users that are logged in, via the local mapping. For root, lookups
+# will work for any tacacs users, logged in or not.
+
+# Set a per-connection timeout of 10 seconds, and enable the use of poll() when
+# trying to read from tacacs servers. Otherwise standard TCP timeouts apply.
+# Not set or set to a negative value disables use of poll(). There are usually
+# multiple connection attempts per login.
+timeout={{ tacacs.timeout }}
+
+{% if tacacs.server is vyos_defined %}
+{%     for server, server_config in tacacs.server.items() %}
+secret={{ server_config.key }}
+server={{ server }}:{{ server_config.port }}
+{%     endfor %}
+{% endif %}
+
+# If set, login/logout accounting records are sent to all servers in
+# the list, otherwise only to the first responding server
+# Also used by audisp-tacplus per-command accounting, if it sources this file.
+acct_all=1
+
+{% if tacacs.vrf is vyos_defined %}
+# If the management network is in a vrf, set this variable to the vrf name.
+# This would usually be "mgmt". When this variable is set, the connection to the
+# TACACS+ accounting servers will be made through the named vrf.
+vrf={{ tacacs.vrf }}
+{% endif %}
+
+{% if tacacs.source_address is vyos_defined %}
+# Sets the IPv4 address used as the source IP address when communicating with
+# the TACACS+ server. IPv6 addresses are not supported, nor are hostnames.
+# The address must work when passsed to the bind() system call, that is, it must
+# be valid for the interface being used.
+source_ip={{ tacacs.source_address }}
+{% endif %}
+
+# If user_homedir=1, then tacacs users will be set to have a home directory
+# based on their login name, rather than the mapped tacacsN home directory.
+# mkhomedir_helper is used to create the directory if it does not exist (similar
+# to use of pam_mkhomedir.so). This flag is ignored for users with restricted
+# shells, e.g., users mapped to a tacacs privilege level that has enforced
+# per-command authorization (see the tacplus-restrict man page).
+user_homedir=1
+
+service=shell
+protocol=ssh
+