Abbreviate pf rule text so rows fit the column without wrapping

pfctl's verbose syntax (flags S/SA, quick, from any to any port = X,
proto tcp/udp/icmp) was overflowing the .section column width and
wrapping mid-rule. abbreviate_rule() in pf.sh strips the near-
universal boilerplate tokens on this ruleset and swaps in/out for
arrows - cuts each rule to roughly 35-45% of its original length.

Deliberately not a real pf syntax parser: it's a handful of targeted
sed substitutions, so a rule shape it doesn't recognize just passes
through unshortened rather than mangling. Only uses the Arrows block
(confirmed shipped in the scientifica font) - avoided Dingbats
(checkmark/X) since that block isn't included in this font.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

1 files changed, 30 insertions, 2 deletions

diff --git a/statuspage/checks/pf.sh b/statuspage/checks/pf.sh
index 47b2acd..ef39268 100755
--- a/statuspage/checks/pf.sh
+++ b/statuspage/checks/pf.sh
@@ -11,6 +11,34 @@ set -eu
 DIR=$(dirname "$0")
 . "$DIR/../lib/common.sh"
 
+# abbreviate_rule RULE
+# Best-effort compression of pfctl's verbose rule syntax so rows fit a
+# narrow column without wrapping mid-word. Not a semantic parser - just
+# strips/replaces the tokens that are near-universal boilerplate on this
+# ruleset (quick, flags S/SA, proto/from-to-port verbosity) and swaps
+# in/out for arrows. Uses only the Arrows block (confirmed present in
+# the scientifica font); avoids Dingbats (✓/✗) since that block isn't
+# shipped. A rule shape this doesn't recognize just passes through
+# unshortened - still correct, just longer.
+abbreviate_rule() {
+    printf '%s' "$1" | sed -E \
+        -e 's/ in / → /' \
+        -e 's/ out / ← /' \
+        -e 's/ quick//' \
+        -e 's/ on / /' \
+        -e 's/ flags [A-Za-z\/]+//' \
+        -e 's/ modulate state/ [state]/' \
+        -e 's/ keep state/ [state]/' \
+        -e 's/ proto (tcp|udp|icmp)/ \1/' \
+        -e 's/ from any to any port = ([a-zA-Z0-9]+)/ :\1/' \
+        -e 's/ inet / /' \
+        -e 's/ round-robin//' \
+        -e 's/ all$//' \
+        -e 's/ all / /' \
+        -e 's/  +/ /g' \
+        -e 's/^ +//' -e 's/ +$//'
+}
+
 INFO=$(pfctl -si 2>/dev/null) || INFO=""
 
 ENABLED=$(printf '%s\n' "$INFO" | awk -F'[ :]+' '/^Status:/{print $2; exit}')
@@ -40,10 +68,10 @@ json_line "pf" "filter rules loaded" "$RULE_COUNT" "ok"
 
 pfctl -sr 2>/dev/null | while IFS= read -r rule; do
     [ -n "$rule" ] || continue
-    json_line "pf" "  $rule" "" "info"
+    json_line "pf" "  $(abbreviate_rule "$rule")" "" "info"
 done
 
 pfctl -sn 2>/dev/null | while IFS= read -r rule; do
     [ -n "$rule" ] || continue
-    json_line "pf" "  nat: $rule" "" "info"
+    json_line "pf" "  nat: $(abbreviate_rule "$rule")" "" "info"
 done