236 lines
7.9 KiB
Bash
Executable file
236 lines
7.9 KiB
Bash
Executable file
#!/usr/bin/env bash
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# NACM recovery user and credentials for internal mode
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# Use read-only NACM as use-case, ie to be able to break a deadlock and access
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# the config even though NACM is enabled and write is DENY
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# Only use netconf - restconf also has authentication on web level, and that gets
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# another layer
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# The only recovery session that work are: (last true arg to testrun)
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#
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# Magic line must be first in script (see README.md)
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s="$_" ; . ./lib.sh || if [ "$s" = $0 ]; then exit 0; else return 0; fi
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APPNAME=example
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# Common NACM scripts
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. ./nacm.sh
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cfg=$dir/conf_yang.xml
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fyang=$dir/nacm-example.yang
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# cred:none, exact, except
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cat <<EOF > $fyang
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module nacm-example{
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yang-version 1.1;
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namespace "urn:example:nacm";
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prefix nex;
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import clixon-example {
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prefix ex;
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}
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import ietf-netconf-acm {
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prefix nacm;
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}
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leaf x{
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type int32;
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description "something to edit";
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}
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}
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EOF
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# The groups are slightly modified from RFC8341 A.1
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# The rule-list is from A.2
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RULES='<x xmlns="urn:example:nacm">0</x><nacm xmlns="urn:ietf:params:xml:ns:yang:ietf-netconf-acm"><enable-nacm>true</enable-nacm><read-default>permit</read-default><write-default>permit</write-default><exec-default>permit</exec-default><enable-external-groups>true</enable-external-groups></nacm>'
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DEFAULT='<nacm xmlns="urn:ietf:params:xml:ns:yang:ietf-netconf-acm"><enable-nacm>true</enable-nacm><read-default>permit</read-default><write-default>deny</write-default><exec-default>permit</exec-default><enable-external-groups>true</enable-external-groups></nacm>'
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# Arguments:
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# cred: none/exact/except
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# realuser: sudo/su as user, this is the real "peer" user
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# pseudo: mimic/run as user, this is the one sent in XML
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# recovery: recovery user
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# getp: true: get works; false: get does not work
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# putp: true: expected to work; false: not work
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testrun()
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{
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cred=$1
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realuser=$2
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pseudo=$3
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recovery=$4
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getp=$5
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putp=$6
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if [ "$realuser" = "root" ]; then
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prefix="sudo "
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else
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prefix=""
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fi
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cat <<EOF > $cfg
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<clixon-config xmlns="http://clicon.org/config">
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<CLICON_CONFIGFILE>$cfg</CLICON_CONFIGFILE>
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<CLICON_YANG_DIR>/usr/local/share/clixon</CLICON_YANG_DIR>
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<CLICON_YANG_DIR>$IETFRFC</CLICON_YANG_DIR>
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<CLICON_YANG_MAIN_FILE>$fyang</CLICON_YANG_MAIN_FILE>
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<CLICON_CLISPEC_DIR>/usr/local/lib/$APPNAME/clispec</CLICON_CLISPEC_DIR>
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<CLICON_RESTCONF_DIR>/usr/local/lib/$APPNAME/restconf</CLICON_RESTCONF_DIR>
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<CLICON_CLI_DIR>/usr/local/lib/$APPNAME/cli</CLICON_CLI_DIR>
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<CLICON_CLI_MODE>$APPNAME</CLICON_CLI_MODE>
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<CLICON_SOCK>/usr/local/var/$APPNAME/$APPNAME.sock</CLICON_SOCK>
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<CLICON_BACKEND_DIR>/usr/local/lib/$APPNAME/backend</CLICON_BACKEND_DIR>
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<CLICON_BACKEND_PIDFILE>/usr/local/var/$APPNAME/$APPNAME.pidfile</CLICON_BACKEND_PIDFILE>
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<CLICON_XMLDB_DIR>/usr/local/var/$APPNAME</CLICON_XMLDB_DIR>
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<CLICON_MODULE_LIBRARY_RFC7895>false</CLICON_MODULE_LIBRARY_RFC7895>
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<CLICON_RESTCONF_PRETTY>false</CLICON_RESTCONF_PRETTY>
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<CLICON_NACM_RECOVERY_USER>$recovery</CLICON_NACM_RECOVERY_USER>
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<CLICON_NACM_MODE>internal</CLICON_NACM_MODE>
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<CLICON_NACM_CREDENTIALS>$cred</CLICON_NACM_CREDENTIALS>
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</clixon-config>
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EOF
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if [ $BE -ne 0 ]; then
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sudo clixon_backend -zf $cfg
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if [ $? -ne 0 ]; then
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err
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fi
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new "start backend -s init -f $cfg"
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start_backend -s init -f $cfg
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new "waiting"
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wait_backend
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fi
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if [ $RC -ne 0 ]; then
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new "kill old restconf daemon"
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stop_restconf_pre
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new "start restconf daemon (-a is enable basic authentication)"
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start_restconf -f $cfg -- -a
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new "waiting"
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wait_restconf
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fi
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if $getp; then
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# default is read allowed so this should always succeed.
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new "get startup default ok"
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expecteof "$prefix$clixon_netconf -qf $cfg -U $pseudo" 0 "<rpc><get-config><source><candidate/></source></get-config></rpc>]]>]]>" "^<rpc-reply><data>$DEFAULT</data></rpc-reply>]]>]]>$"
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# This would normally not work except in recovery situations
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else
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new "get startup not ok"
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expecteof "$prefix$clixon_netconf -qf $cfg -U $pseudo" 0 "<rpc><get-config><source><candidate/></source></get-config></rpc>]]>]]>" "^<rpc-reply><rpc-error><error-type>application</error-type><error-tag>access-denied</error-tag><error-severity>error</error-severity><error-message>User $realuser credential not matching NACM user $pseudo</error-message></rpc-error></rpc-reply>]]>]]>$"
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return;
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fi
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if $putp; then
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new "put, expect ok"
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expecteof "$prefix$clixon_netconf -qf $cfg -U $pseudo" 0 "<rpc><edit-config><target><candidate/></target><config>$RULES</config></edit-config></rpc>]]>]]>" "<rpc-reply><ok/></rpc-reply>]]>]]>"
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new "get rules ok"
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expecteof "$prefix$clixon_netconf -qf $cfg -U $pseudo" 0 '<rpc><get-config><source><candidate/></source></get-config></rpc>]]>]]>' "^<rpc-reply><data>$RULES</data></rpc-reply>]]>]]>$"
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else
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new "put, expect fail"
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expecteof "$prefix$clixon_netconf -qf $cfg -U $pseudo" 0 "<rpc><edit-config><target><candidate/></target><config>$RULES</config></edit-config></rpc>]]>]]>" "^<rpc-reply><rpc-error><error-type>application</error-type><error-tag>access-denied</error-tag><error-severity>error</error-severity><error-message>default deny</error-message></rpc-error></rpc-reply>]]>]]>$"
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fi
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if [ $RC -ne 0 ]; then
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new "Kill restconf daemon"
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stop_restconf
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fi
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if [ $BE -ne 0 ]; then
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new "Kill backend"
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# Check if premature kill
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pid=$(pgrep -u root -f clixon_backend)
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if [ -z "$pid" ]; then
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err "backend already dead"
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fi
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# kill backend
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stop_backend -f $cfg
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fi
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}
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#------- REALUSER: $USER
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# Neither of these should work: user != recovery
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REALUSER=$USER
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PSEUDO=$USER
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RECOVERY=_recovery
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for c in none exact except; do
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new "cred: $c realuser:$REALUSER pseudo:$PSEUDO recovery:$RECOVERY"
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testrun $c $REALUSER $PSEUDO $RECOVERY true false
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done
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# All these should work: user == recovery
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REALUSER=$USER
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PSEUDO=$USER
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RECOVERY=$USER
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for c in none exact except; do
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new "cred: $c realuser:$REALUSER pseudo:$PSEUDO recovery:$RECOVERY"
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testrun $c $REALUSER $PSEUDO $RECOVERY true true
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done
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# Only none credentials should work
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REALUSER=$USER
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PSEUDO=_recovery
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RECOVERY=_recovery
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new "cred: none realuser:$REALUSER pseudo:$PSEUDO recovery:$RECOVERY"
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testrun none $REALUSER $PSEUDO $RECOVERY true true
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for c in exact except; do
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new "cred: $c realuser:$REALUSER pseudo:$PSEUDO recovery:$RECOVERY"
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testrun $c $REALUSER $PSEUDO $RECOVERY false false
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done
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# None of these work
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REALUSER=$USER
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PSEUDO=_recovery
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RECOVERY=$USER
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new "cred: none realuser:$REALUSER pseudo:$PSEUDO recovery:$RECOVERY"
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testrun none $REALUSER $PSEUDO $RECOVERY true false
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for c in exact except; do
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new "cred: $c realuser:$REALUSER pseudo:$PSEUDO recovery:$RECOVERY"
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testrun $c $REALUSER $PSEUDO $RECOVERY false false
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done
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#------- REALUSER: ROOT
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#XXX: seems not to work in docker
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# Neither of these should work: user != recovery
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REALUSER=root
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PSEUDO=root
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RECOVERY=_recovery
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for c in none exact except; do
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new "cred: $c realuser:$REALUSER pseudo:$PSEUDO recovery:$RECOVERY"
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testrun $c $REALUSER $PSEUDO $RECOVERY true false
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done
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# All these should work: user == recovery
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REALUSER=root
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PSEUDO=root
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RECOVERY=root
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for c in none exact except; do
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new "cred: $c realuser:$REALUSER pseudo:$PSEUDO recovery:$RECOVERY"
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testrun $c $REALUSER $PSEUDO $RECOVERY true true
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done
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# none and except credentials should work
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# XXX: except does not work in travis
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REALUSER=root
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PSEUDO=_recovery
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RECOVERY=_recovery
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for c in none except; do
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new "cred: $c realuser:$REALUSER pseudo:$PSEUDO recovery:$RECOVERY"
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testrun $c $REALUSER $PSEUDO $RECOVERY true true
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done
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new "cred: exact realuser:$REALUSER pseudo:$PSEUDO recovery:$RECOVERY"
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testrun exact $REALUSER $PSEUDO $RECOVERY false false
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# None of these work
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REALUSER=root
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PSEUDO=_recovery
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RECOVERY=root
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for c in none except; do
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new "cred: $c realuser:$REALUSER pseudo:$PSEUDO recovery:$RECOVERY"
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testrun $c $REALUSER $PSEUDO $RECOVERY true false
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done
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new "cred: exact realuser:$REALUSER pseudo:$PSEUDO recovery:$RECOVERY"
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testrun exact $REALUSER $PSEUDO $RECOVERY false false
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rm -rf $dir
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