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More robust detection of empty SPD entries.

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Signed-off-by: Tom Eastep <teastep@shorewall.net>
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Tom Eastep 2017-10-14 15:48:28 -07:00
parent 7b9f7c095d
commit f1975ae9b0
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GPG Key ID: 96E6B3F2423A4D10
1 changed files with 25 additions and 25 deletions
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50
Shorewall-core/lib.cli
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@ -1137,26 +1137,31 @@ show_a_macro() {
cat ${directory}/macro.$1
}
#
# Don't dump empty SPD entries
# Don't dump empty SPD entries or entries from the other address family
#
spd_filter4()
{
awk \
'BEGIN { skip=0; }; \
/^src/ { skip=0; }; \
/^src 0.0.0.0\/0 dst 0.0.0.0\/0 uid 0$/ { skip=1; }; \
/src .*:/ { skip=1; }; \
{ if ( skip == 0 ) print; };'
}
spd_filter6()
{
awk \
'BEGIN { skip=0; }; \
/^src/ { skip=0; }; \
/^src ::\/0 dst ::\/0 uid 0$/ { skip=1; }; \
/src .*\./ { skip=1; }; \
{ if ( skip == 0 ) print; };'
spd_filter() {
#
# af = Address Family (4 or 6)
# afok = Address Family of entry matches af
# p = print the contents of A (entry is not empty)
# i = Number of lines stored in A
#
awk -v af=$g_family \
'function prnt(A,i, j) { while ( j < i ) print A[j++]; };\
\
/^src / { if (p) prnt( A, i );\
afok = 1;\
p = 0;\
i = 0;\
if ( af == 4 )\
{ if ( /:/ ) afok = 0; }\
else\
{ if ( /\./ ) afok = 0; }\
};\
{ if ( afok ) A[i++] = $0; };\
/tmpl/ { p = afok; };\
\
END { if (p) prnt( A, i ); }'
}
#
# Print a heading with leading and trailing black lines
@ -1169,12 +1174,7 @@ heading() {
show_ipsec() {
heading "PFKEY SPD"
if [ $g_family = 4 ]; then
$IP -s -4 xfrm policy | spd_filter4
else
$IP -s -6 xfrm policy | spd_filter6
fi
$IP -s -$g_family xfrm policy | spd_filter
heading "PFKEY SAD"
$IP -s -$g_family xfrm state | egrep -v '[[:space:]]+(auth-trunc|enc )' # Don't divulge the keys