From 6ae9ea0c94c6178ed5617ed30abd7999ed2b4655 Mon Sep 17 00:00:00 2001
From: mmetc <92726601+mmetc@users.noreply.github.com>
Date: Wed, 12 Apr 2023 16:08:30 +0200
Subject: [PATCH] deb: fixed bouncer removal when purging package (#60)

---
 debian/postrm       | 14 ++++++++++++++
 debian/prerm        | 11 ++---------
 scripts/_bouncer.sh |  6 +++---
 3 files changed, 19 insertions(+), 12 deletions(-)
 create mode 100644 debian/postrm

diff --git a/debian/postrm b/debian/postrm
new file mode 100644
index 0000000..f45c61b
--- /dev/null
+++ b/debian/postrm
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+set -eu
+
+BOUNCER="crowdsec-custom-bouncer"
+CONFIG="/etc/crowdsec/bouncers/$BOUNCER.yaml"
+
+if [ "$1" = "purge" ]; then
+    if [ -f "$CONFIG.id" ]; then
+        bouncer_id=$(cat "$CONFIG.id")
+        cscli -oraw bouncers delete "$bouncer_id" 2>/dev/null || true
+        rm -f "$CONFIG.id"
+    fi
+fi
diff --git a/debian/prerm b/debian/prerm
index ac88779..c0998e4 100644
--- a/debian/prerm
+++ b/debian/prerm
@@ -4,12 +4,5 @@ set -eu
 
 BOUNCER="crowdsec-custom-bouncer"
 
-#shellcheck source=./scripts/_bouncer.sh
-. "/usr/lib/$DPKG_MAINTSCRIPT_PACKAGE/_bouncer.sh"
-
-systemctl stop "$SERVICE" || echo "cannot stop service"
-systemctl disable "$SERVICE" || echo "cannot disable service"
-
-if [ "$1" = "purge" ]; then
-    delete_bouncer
-fi
+systemctl stop "$BOUNCER" || echo "cannot stop service"
+systemctl disable "$BOUNCER" || echo "cannot disable service"
diff --git a/scripts/_bouncer.sh b/scripts/_bouncer.sh
index 04b1baa..5a75421 100644
--- a/scripts/_bouncer.sh
+++ b/scripts/_bouncer.sh
@@ -89,7 +89,7 @@ config_not_set() {
 
     before=$(cat "$CONFIG")
     # shellcheck disable=SC2016
-    after=$(envsubst '\$$varname' < "$CONFIG")
+    after=$(envsubst "\$$varname" < "$CONFIG")
 
     if [ "$before" = "$after" ]; then
         return 1
@@ -99,9 +99,9 @@ config_not_set() {
 
 need_api_key() {
     if config_not_set 'API_KEY'; then
-        return 1
+        return 0
     fi
-    return 0
+    return 1
 }
 
 # Interpolate a variable in the config file with a value.