Merge pull request #463 from nextcloud/enh/459/only-one-session

make sure that only one session is active at a time

Containers/mastercontainer/Dockerfile

@@ -86,10 +86,12 @@ RUN mkdir /var/log/supervisord; \
 COPY Caddyfile /
 COPY start.sh /usr/bin/
 COPY backup-time-file-watcher.sh /
+COPY session-deduplicator.sh /
 COPY cron.sh /
 COPY supervisord.conf /
 RUN chmod +x /usr/bin/start.sh; \
     chmod +x /cron.sh; \
+    chmod +x /session-deduplicator.sh; \
     chmod +x /backup-time-file-watcher.sh
 
 USER root

Containers/mastercontainer/session-deduplicator.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+while true; do
+    while "$(find "/mnt/docker-aio-config/session/" -mindepth 1 -exec grep "aio_authenticated|[a-z]:1" {} \; | wc -l)" -gt 1; do
+        unset SESSION_FILES
+        SESSION_FILES="$(find "/mnt/docker-aio-config/session/" -mindepth 1)"
+        unset SESSION_FILES_ARRAY
+        mapfile -t SESSION_FILES_ARRAY <<< "$SESSION_FILES"
+        for SESSION_FILE in "${SESSION_FILES_ARRAY[@]}"; do
+            if ! grep -q "aio_authenticated|[a-z]:1" "$SESSION_FILE"; then
+                rm "$SESSION_FILE"
+            fi
+        done
+        echo "Deleting duplicate sessions"
+        unset OLDEST_FILE
+        set -x
+        # shellcheck disable=SC2012
+        OLDEST_FILE="$(ls -t "/mnt/docker-aio-config/session/" | tail -1)"
+        rm "/mnt/docker-aio-config/session/$OLDEST_FILE"
+        set +x
+    done
+    sleep 5
+done

Containers/mastercontainer/supervisord.conf

@@ -35,3 +35,10 @@ stdout_logfile_maxbytes=0
 stderr_logfile=/dev/stderr
 stderr_logfile_maxbytes=0
 command=/backup-time-file-watcher.sh
+
+[program:session-deduplicator]
+stdout_logfile=/dev/stdout
+stdout_logfile_maxbytes=0
+stderr_logfile=/dev/stderr
+stderr_logfile_maxbytes=0
+command=/session-deduplicator.sh