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unbound: drop odhcpd leases with wrong field count

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Signed-off-by: Eric Luehrsen <ericluehrsen@gmail.com>
This commit is contained in:
Eric Luehrsen 2018-08-16 21:37:43 -04:00
parent 38ced675aa
commit 59617f076d
2 changed files with 59 additions and 58 deletions
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2
net/unbound/Makefile
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@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=unbound PKG_NAME:=unbound
PKG_VERSION:=1.7.3 PKG_VERSION:=1.7.3
PKG_RELEASE:=5 PKG_RELEASE:=6
PKG_LICENSE:=BSD-3-Clause PKG_LICENSE:=BSD-3-Clause
PKG_LICENSE_FILES:=LICENSE PKG_LICENSE_FILES:=LICENSE

115
net/unbound/files/odhcpd.awk
View file

@ -37,6 +37,12 @@
sub( /.*\//, "", cdr2 ) ; sub( /.*\//, "", cdr2 ) ;
if ( hst !~ /^[[:alnum:]]([-[:alnum:]]*[[:alnum:]])?$/ ) {
# that is not a valid host name (RFC1123)
hst = "-" ;
}
if ( bisolt == 1 ) { if ( bisolt == 1 ) {
# TODO: this might be better with a substituion option, # TODO: this might be better with a substituion option,
# or per DHCP pool do-not-DNS option, but its getting busy here. # or per DHCP pool do-not-DNS option, but its getting busy here.
@ -50,78 +56,69 @@
} }
if ( cls == "ipv4" ) { if ((cls == "ipv4") && (hst != "-") && (cdr == 32) && (NF == 9)) {
if ( NF == 8 ) { # IPV4 ; only for provided hostnames and full /32 assignments
# odhcpd errata in field format without host name # NF=9 ; odhcpd errata in field format without host name
adr = $8 ; hst = "-" ; cdr = adr ; ptr = adr ; qpr = "" ; split( ptr, ptr, "." ) ;
sub( /\/.*/, "", adr ) ; slaac = slaac_eui64( id ) ;
sub( /.*\//, "", cdr ) ;
if ( bconf == 1 ) {
x = ( "local-data: \"" fqdn ". 300 IN A " adr "\"" ) ;
y = ( "local-data-ptr: \"" adr " 300 " fqdn "\"" ) ;
print ( x "\n" y "\n" ) > hostfile ;
}
else {
for( i=1; i<=4; i++ ) { qpr = ( ptr[i] "." qpr) ; }
x = ( fqdn ". 300 IN A " adr ) ;
y = ( qpr "in-addr.arpa. 300 IN PTR " fqdn ) ;
print ( x "\n" y ) > hostfile ;
} }
if (( cdr == 32 ) && ( hst != "-" )) { if (( bslaac == 1 ) && ( slaac != 0 )) {
# only for provided hostnames and full /32 assignments # UCI option to discover IPV6 routed SLAAC addresses
ptr = adr ; qpr = "" ; split( ptr, ptr, "." ) ; # NOT TODO - ping probe take too long when added in awk-rule loop
slaac = slaac_eui64( id ) ; cmd = ( "ip -6 --oneline route show dev " net ) ;
if ( bconf == 1 ) { while ( ( cmd | getline adr ) > 0 ) {
x = ( "local-data: \"" fqdn ". 300 IN A " adr "\"" ) ; if (( substr( adr, 1, 5 ) <= "fdff:" ) \
y = ( "local-data-ptr: \"" adr " 300 " fqdn "\"" ) ; && ( index( adr, "anycast" ) == 0 ) \
print ( x "\n" y "\n" ) > hostfile ; && ( index( adr, "via" ) == 0 )) {
} # GA or ULA routed addresses only (not LL or MC)
sub( /\/.*/, "", adr ) ;
else { adr = ( adr slaac ) ;
for( i=1; i<=4; i++ ) { qpr = ( ptr[i] "." qpr) ; }
x = ( fqdn ". 300 IN A " adr ) ;
y = ( qpr "in-addr.arpa. 300 IN PTR " fqdn ) ;
print ( x "\n" y ) > hostfile ;
}
if (( bslaac == 1 ) && ( slaac != 0 )) { if ( split( adr, tmp0, ":" ) > 8 ) {
# UCI option to discover IPV6 routed SLAAC addresses sub( "::", ":", adr ) ;
# NOT TODO - ping probe take too long when added in awk-rule loop }
cmd = ( "ip -6 --oneline route show dev " net ) ;
while ( ( cmd | getline adr ) > 0 ) { if ( bconf == 1 ) {
if (( substr( adr, 1, 5 ) <= "fdff:" ) \ x = ( "local-data: \"" fqdn ". 300 IN AAAA " adr "\"" ) ;
&& ( index( adr, "anycast" ) == 0 ) \ y = ( "local-data-ptr: \"" adr " 300 " fqdn "\"" ) ;
&& ( index( adr, "via" ) == 0 )) { print ( x "\n" y "\n" ) > hostfile ;
# GA or ULA routed addresses only (not LL or MC) }
sub( /\/.*/, "", adr ) ;
adr = ( adr slaac ) ;
else {
if ( split( adr, tmp0, ":" ) > 8 ) { qpr = ipv6_ptr( adr ) ;
sub( "::", ":", adr ) ; x = ( fqdn ". 300 IN AAAA " adr ) ;
} y = ( qpr ". 300 IN PTR " fqdn ) ;
print ( x "\n" y ) > hostfile ;
if ( bconf == 1 ) {
x = ( "local-data: \"" fqdn ". 300 IN AAAA " adr "\"" ) ;
y = ( "local-data-ptr: \"" adr " 300 " fqdn "\"" ) ;
print ( x "\n" y "\n" ) > hostfile ;
}
else {
qpr = ipv6_ptr( adr ) ;
x = ( fqdn ". 300 IN AAAA " adr ) ;
y = ( qpr ". 300 IN PTR " fqdn ) ;
print ( x "\n" y ) > hostfile ;
}
} }
} }
close( cmd ) ;
} }
close( cmd ) ;
} }
} }
else { else if ((cls != "ipv4") && (hst != "-") && (9 <= NF) && (NF <= 10)) {
if (( cdr == 128 ) && ( hst != "-" )) { if (cdr == 128) {
if ( bconf == 1 ) { if ( bconf == 1 ) {
x = ( "local-data: \"" fqdn ". 300 IN AAAA " adr "\"" ) ; x = ( "local-data: \"" fqdn ". 300 IN AAAA " adr "\"" ) ;
y = ( "local-data-ptr: \"" adr " 300 " fqdn "\"" ) ; y = ( "local-data-ptr: \"" adr " 300 " fqdn "\"" ) ;
@ -137,7 +134,7 @@
} }
} }
if (( cdr2 == 128 ) && ( hst != "-" )) { if (cdr2 == 128) {
if ( bconf == 1 ) { if ( bconf == 1 ) {
x = ( "local-data: \"" fqdn ". 300 IN AAAA " adr2 "\"" ) ; x = ( "local-data: \"" fqdn ". 300 IN AAAA " adr2 "\"" ) ;
y = ( "local-data-ptr: \"" adr2 " 300 " fqdn "\"" ) ; y = ( "local-data-ptr: \"" adr2 " 300 " fqdn "\"" ) ;
@ -153,6 +150,10 @@
} }
} }
} }
else {
# dump non-conforming lease records
}
} }
############################################################################## ##############################################################################