Replace shred when toggling logging

src/freedombone-logging

 
 WEBSERVER_LOG_LEVEL='warn'
 
+# Shredding could be used here, but especially on microSD
+# or SSD it's debatable how useful shredding really is.
+# Also the shred command can be very slow on Beaglebone Black
+REMOVE_FILES_COMMAND='rm -rf'
+
 function turn_off_rsys_logging {
     sed -i 's|mail,news.none.*|mail,news.none      /dev/null|g' /etc/rsyslog.conf
     sed -i 's|auth,authpriv.\*.*|auth,authpriv.\*         /dev/null|g' /etc/rsyslog.conf
     sed -i 's|\*.\*;auth,authpriv.none.*|\*.\*;auth,authpriv.none      /dev/null|g' /etc/rsyslog.conf
     sed -i 's|#cron.\*|cron.\*|g' /etc/rsyslog.conf
     sed -i 's|cron.\*.*|cron.\*             /dev/null|g' /etc/rsyslog.conf
-    shred -zu /var/log/wtmp*
-    shred -zu /var/log/debug*
-    shred -zu /var/log/cron.*
-    shred -zu /var/log/auth.*
-    shred -zu /var/log/mail.*
-    shred -zu /var/log/daemon.*
-    shred -zu /var/log/user.*
-    shred -zu /var/log/messages*
+    $REMOVE_FILES_COMMAND /var/log/wtmp*
+    $REMOVE_FILES_COMMAND /var/log/debug*
+    $REMOVE_FILES_COMMAND /var/log/cron.*
+    $REMOVE_FILES_COMMAND /var/log/auth.*
+    $REMOVE_FILES_COMMAND /var/log/mail.*
+    $REMOVE_FILES_COMMAND /var/log/daemon.*
+    $REMOVE_FILES_COMMAND /var/log/user.*
+    $REMOVE_FILES_COMMAND /var/log/messages*
 }
 
 function turn_on_rsys_logging {
             sed -i 's|log_config:|#log_config:|g' /var/lib/matrix/homeserver.yaml
         fi
         if [ -f /etc/matrix/homeserver.log ]; then
-            shred -zu /etc/matrix/homeserver.log
+            $REMOVE_FILES_COMMAND /etc/matrix/homeserver.log
         fi
         if [ -f /etc/matrix/homeserver.log.1 ]; then
-            shred -zu /etc/matrix/homeserver.log.1
+            $REMOVE_FILES_COMMAND /etc/matrix/homeserver.log.1
         fi
     fi
     if [ -d /etc/tor ]; then
         sed -i 's|#Log notice file.*|Log notice file /dev/null|g' /etc/tor/torrc
         sed -i 's|Log notice file.*|Log notice file /dev/null|g' /etc/tor/torrc
         if [ -d /var/log/tor ]; then
-            shred -zu /var/log/tor/*
+            $REMOVE_FILES_COMMAND /var/log/tor/*
             rm -rf /var/log/tor
         fi
     fi
     if [ -f /etc/mumble-server.ini ]; then
         sed -i 's|logfile=.*|logfile=/dev/null|g' /etc/mumble-server.ini
         if [ -d /var/log/mumble-server ]; then
-            shred -zu /var/log/mumble-server/*
+            $REMOVE_FILES_COMMAND /var/log/mumble-server/*
             rm -rf /var/log/mumble-server
         fi
     fi
     if [ -d /var/log/radicale ]; then
-        shred -zu /var/log/radicale/*
+        $REMOVE_FILES_COMMAND /var/log/radicale/*
         rm -rf /var/log/radicale
     fi
     if [ -f /etc/php/7.0/fpm/php-fpm.conf ]; then
         sed -i 's|error_log =.*|error_log = /dev/null|g' /etc/php/7.0/fpm/php-fpm.conf
-        shred -zu /var/log/php-fpm.*
+        $REMOVE_FILES_COMMAND /var/log/php-fpm.*
     fi
     if [ -d /etc/nginx ]; then
         for filename in /etc/nginx/sites-available/* ; do
         done
         sed -i 's|access_log.*|access_log /dev/null;|g' /etc/nginx/nginx.conf
         sed -i 's|error_log.*|error_log /dev/null;|g' /etc/nginx/nginx.conf
-        shred -zu /var/log/nginx/*
+        $REMOVE_FILES_COMMAND /var/log/nginx/*
     fi
     if [ -f /etc/init.d/spamassassin ]; then
         sed -i 's|DOPTIONS="-d --pidfile=$PIDFILE"|DOPTIONS="-s null -d --pidfile=$PIDFILE"|g' /etc/init.d/spamassassin
         sed -i 's|info = "/var/log/prosody/prosody.log";|info = "/dev/null";|g' /etc/prosody/prosody.cfg.lua
         sed -i 's|error = "/var/log/prosody/prosody.err";|error = "/dev/null";|g' /etc/prosody/prosody.cfg.lua
         sed -i 's|levels = { "error" }; to = "syslog";|levels = { "error" }; to = "/dev/null";|g' /etc/prosody/prosody.cfg.lua
-        shred -zu /var/log/prosody/*
+        $REMOVE_FILES_COMMAND /var/log/prosody/*
         rm -rf /var/log/prosody
     fi
     if [ -d /etc/exim4 ]; then
         sed -i 's|MAIN_LOG_SELECTOR = .*|MAIN_LOG_SELECTOR = -all|g' /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs
         sed -i 's|MAIN_LOG_SELECTOR = .*|MAIN_LOG_SELECTOR = -all|g' /etc/exim4/exim4.conf.template
         sed -i 's|log_selector =.*|log_selector = -all|g' /etc/exim4/conf.d/main/90_exim4-config_log_selector
-        shred -zu /var/log/exim4/*
+        $REMOVE_FILES_COMMAND /var/log/exim4/*
     fi
     if [ -f /etc/dovecot/dovecot.conf ]; then
         sed -i 's|log_path =.*|log_path = /dev/null|g' /etc/dovecot/dovecot.conf
         sed -i 's|info_log_path =.*|info_log_path = /dev/null|g' /etc/dovecot/dovecot.conf
         sed -i 's|debug_log_path =.*|debug_log_path = /dev/null|g' /etc/dovecot/dovecot.conf
-        shred -zu /var/log/mail.*
-        shred -zu /var/log/dovecot*
+        $REMOVE_FILES_COMMAND /var/log/mail.*
+        $REMOVE_FILES_COMMAND /var/log/dovecot*
     fi
     if [ -d /etc/mysql ]; then
         if [ -d /var/log/mysql ]; then
-            shred -zu /var/log/mysql/*
+            $REMOVE_FILES_COMMAND /var/log/mysql/*
         fi
         if [ -f /var/log/mysql.err ]; then
-            shred -zu /var/log/mysql.err
+            $REMOVE_FILES_COMMAND /var/log/mysql.err
         fi
         if [ -f /var/log/mysql.log ]; then
-            shred -zu /var/log/mysql.log
+            $REMOVE_FILES_COMMAND /var/log/mysql.log
         fi
         if [ -f /etc/mysql/my.cnf ]; then
             sed -i 's|log_error =.*|log_error = /dev/null|g' /etc/mysql/my.cnf
     if [ -f /etc/fail2ban/fail2ban.conf ]; then
         sed -i 's|loglevel.*|loglevel = 1|g' /etc/fail2ban/fail2ban.conf
         sed -i 's|logtarget.*|logtarget = /dev/null|g' /etc/fail2ban/fail2ban.conf
-        shred -zu /var/log/fail2ban.*
+        $REMOVE_FILES_COMMAND /var/log/fail2ban.*
     fi
     turn_off_rsys_logging
 fi