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Patch: lightdm-1.30.0-alt-03-login-unknown.patch
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data/Makefile.am | 1 +
data/lightdm-login-unknown | 71 ++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 72 insertions(+)
diff --git a/data/Makefile.am b/data/Makefile.am
index 6bf6bb8f..11450af1 100644
--- a/data/Makefile.am
+++ b/data/Makefile.am
@@ -54,3 +54,4 @@ dist_x11_SCRIPTS = Xgreeter.lightdm
controldir = $(sysconfdir)/control.d/facilities
control_SCRIPTS = lightdm-greeter-hide-users
+control_SCRIPTS += lightdm-login-unknown
diff --git a/data/lightdm-login-unknown b/data/lightdm-login-unknown
new file mode 100755
index 00000000..80859b78
--- /dev/null
+++ b/data/lightdm-login-unknown
@@ -0,0 +1,71 @@
+#!/bin/sh
+
+PAM_CONFIG=/etc/pam.d/lightdm
+
+# Resolve the links because sed -i replaces the files
+PAM_CONFIG="$(realpath "$PAM_CONFIG")"
+
+pam_shells_get() {+ sed -n -e 's/^auth[[:space:]]\+\([^[:space:]]\+\)[[:space:]]\+pam_shells\.so\([[:space:]]\+.*\)\?$/\1/p' "$PAM_CONFIG"
+}
+
+pam_shells_set() {+ sed -i -e "s/^auth[[:space:]]\\+[^[:space:]]\\+[[:space:]]\\+pam_shells\\.so\\([[:space:]]\\+.*\\)\\?\$/auth\\t\\t$1\\tpam_shells.so\\1/" "$PAM_CONFIG"
+}
+
+pam_succeed_if_get() {+ sed -n -e 's/^auth[[:space:]]\+\([^[:space:]]\+\)[[:space:]]\+pam_succeed_if\.so\([[:space:]]\+.*\)\?[[:space:]]\+uid[[:space:]]\+ne[[:space:]]\+0\([[:space:]]\+.*\)\?$/\1/p' "$PAM_CONFIG"
+}
+
+pam_succeed_if_set() {+ sed -i -e "s/^auth[[:space:]]\\+[^[:space:]]\\+[[:space:]]\\+pam_succeed_if\\.so\\([[:space:]]\\+.*\\)\\?[[:space:]]\\+uid[[:space:]]\\+ne[[:space:]]\\+0\\([[:space:]]\\+.*\\)\\?\$/auth\\t\\t$1\\tpam_succeed_if.so\\1 uid ne 0\\2/" "$PAM_CONFIG"
+}
+
+test_pam_on() {+ case "$(pam_shells_get) $(pam_succeed_if_get)" in
+ optional\ optional)
+ return 0
+ ;;
+ *)
+ return 1
+ ;;
+ esac
+}
+
+set_pam_on() {+ pam_shells_set 'optional'
+ pam_succeed_if_set 'optional'
+}
+
+test_pam_off() {+ case "$(pam_shells_get) $(pam_succeed_if_get)" in
+ required\ required)
+ return 0
+ ;;
+ *)
+ return 1
+ ;;
+ esac
+}
+
+set_pam_off() {+ pam_shells_set 'required'
+ pam_succeed_if_set 'required'
+}
+
+SUMMARY="Login of unknown users through LightDM"
+
+ON_NAME='enabled'
+ON_HELP="Unknown users are allowed to login"
+ON_TEST='test_pam_on'
+ON_HOOK='set_pam_on'
+
+OFF_NAME='disabled'
+OFF_HELP="Unknown users are blocked from login"
+OFF_TEST='test_pam_off'
+OFF_HOOK='set_pam_off'
+
+SECTION='LightDM'
+VARNAME='login-unknown'
+
+"${0%/*}/lightdm-greeter-hide-users" "$@"