Convert single bracket ifs to double bracket. Disable access to app during upgrade.

install.sh

@@ -21,7 +21,7 @@ CONFIG_DEFAULT_COLUMN=""
 
 function privilege_check() {
     # test for superuser rights
-    if [[ $EUID -ne 0 ]]; then
+    if [[ "$EUID" != 0 ]]; then
         echo "This script must be run with superuser privileges. Try sudo $0" 
         exit 1
     fi
@@ -36,11 +36,11 @@ function get_new_password() {
 	    echo ""
 	    read -p "Re-type new password: " -s -r rnewpw
 		echo ""
-	    if [ "$newpassword" = "" -o "$rnewpw" = "" ]
+	    if [[ "$newpassword" == "" || "$rnewpw" == "" ]]
 	    then
 	        echo "Password cannot be blank. Please try again."
 	        echo ""
-	    elif [ "$newpassword" != "$rnewpw" ]
+	    elif [[ "$newpassword" != "$rnewpw" ]]
 	    then
 	        echo "Passwords do not match. Please try again."
 	        echo ""
@@ -63,7 +63,7 @@ function install_required_packages() {
         gpattern=""
         for pkg_option in $(echo $prereq)
         do
-            if [ "$pkg_option" != "or" ]
+            if [[ "$pkg_option" != "or" ]]
             then
                 gpattern+=" -e $pkg_option"
                 preferred_pkg=$pkg_option
@@ -76,7 +76,7 @@ function install_required_packages() {
             echo "$APP_NAME requires $prereq, but it doesn't seem to be installed. "
             echo -n "Install $preferred_pkg now? [Y/n]: "
             read reqinstall
-            if [ "$reqinstall" = "N" -o "$reqinstall" = "n" ]
+            if [[ "$reqinstall" == "N" || "$reqinstall" == "n" ]]
             then
                 echo "$APP_NAME requires $prereq, but you have elected not to install it."
                 echo "Installation cannot continue."
@@ -172,20 +172,20 @@ echo ""
 echo -n "Enter name of $APP_NAME installation directory [$INSTALL_LOC] :"
 read install_loc_in
 echo ""
-if [ "$doc_root_in" = "" ] 
+if [[ "$doc_root_in" == "" ]] 
 then
     doc_root_in=$DOC_ROOT
 fi
-if [ "$install_loc_in" = "" ] 
+if [[ "$install_loc_in" == "" ]] 
 then
     install_loc_in=$INSTALL_LOC
 fi
 install_path="$doc_root_in/$install_loc_in"
-if [ -d "$install_path" ] 
+if [[ -d "$install_path" ]] 
 then
     echo "The installation path you chose already exists."
     # Install path exists.
-    if [ -e "$install_path/db.php" ] 
+    if [[ -e "$install_path/db.php" ]] 
     then
         # A db.php file was found in the install path
         if grep -q -e "$APP_NAME" $install_path/db.php
@@ -195,12 +195,17 @@ then
             echo "and restart the install using a new installation location."
             echo -n "[U]pgrade or [C]ancel? [U] :"
             read upgrade_choice
-            if [[ $upgrade_choice == "C" || $upgrade_choice == "c" ]] # Cancel chosen
+            if [[ "$upgrade_choice" == "C" || "$upgrade_choice" == "c" ]] # Cancel chosen
             then
                 echo "Cancelling installation"
                 abort_exit
             else
                 # proceed with upgrade
+                
+                # take app offline during upgrade
+                a2disconf $install_loc_in
+                systemctl reload apache2
+
                 datestamp=$(date +%Y-%m-%d_%H:%M:%S)
                 backupdir=backups/$datestamp
                 mkdir -p $backupdir
@@ -246,12 +251,12 @@ then
                 echo "Installing distribution . . ."
                 cp -R distfiles/* $install_path
                 # set symlink for jquery-ui
-                if [ ! -L "$install_path/jquery-ui" ]
+                if [[ ! -L "$install_path/jquery-ui" ]]
 			    then
 					ln -s $install_path/jquery-ui* $install_path/jquery-ui
 				fi
 				# set symlink for index.php
-				if [ ! -L "$install_path/index.php" ]
+				if [[ ! -L "$install_path/index.php" ]]
 			    then
 					ln -s $install_path/$LANDING_PAGE $install_path/index.php
 				fi
@@ -283,11 +288,11 @@ then
         echo "Would you like to use this location for a fresh installation or quit and"
         echo "investigate further? It's probably safest to quit and investigate."
         proceed=""
-        while [[ $proceed != "P" && $proceed != "p" && $proceed != "Q" && $proceed != "q" ]]
+        while [[ "$proceed" != "P" && "$proceed" != "p" && "$proceed" != "Q" && "$proceed" != "q" ]]
         do
             read proceed -p "[P]roceed with new install or [Q]uit? : "
         done
-        if [[ $proceed == "Q" || $proceed == "q" ]]
+        if [[ "$proceed" == "Q" || "$proceed" == "q" ]]
         then
             abort_exit
         fi
@@ -302,7 +307,7 @@ else
     echo "This can be changed later in the application itself."
     echo -n "Installation name [$APP_NAME]: "
     read new_inst_name
-    if [ "$new_inst_name" = "" ] 
+    if [[ "$new_inst_name" == "" ]] 
 	then
 		new_inst_name="$APP_NAME"
 	fi
@@ -319,7 +324,7 @@ else
         echo "distinctive name."
         echo -n "database name [$DEFAULT_DB_NAME]: "
         read new_db_name
-        if [ "$new_db_name" = "" ] 
+        if [[ "$new_db_name" == "" ]] 
         then
             new_db_name=$DEFAULT_DB_NAME
         fi
@@ -332,7 +337,7 @@ else
             echo "This probably means the database already exists."
             echo -n "Try again with a different database name? [Y/N]: "
             read dbcreatetry
-            if [ "$dbcreatetry" != "Y" -o "$dbcreatetry" != "y" ]
+            if [[ "$dbcreatetry" != "Y" || "$dbcreatetry" != "y" ]]
             then
                 abort_exit
             fi
@@ -352,7 +357,7 @@ else
     # Set the installation name
     export MYSQL_PWD="$db_pass"
     mysql -u"$db_user" $new_db_name -e "update $CONFIG_TABLE set $CONFIG_VALUE_COLUMN=\"$new_inst_name\" where $CONFIG_NAME_COLUMN=\"log_name\""
-    if [ "$CONFIG_DEFAULT_COLUMN" != "" ]
+    if [[ "$CONFIG_DEFAULT_COLUMN" != "" ]]
     then
         mysql -u"$db_user" $new_db_name -e "update $CONFIG_TABLE set $CONFIG_DEFAULT_COLUMN=\"$new_inst_name\" where $CONFIG_NAME_COLUMN=\"log_name\""
     fi
@@ -361,7 +366,7 @@ else
     mkdir $install_path
     
     # Create db.php if it doesn't exist
-    if [ ! -f "$install_path/db.php" ]
+    if [[ ! -f "$install_path/db.php" ]]
     then
         cp db.php.template $install_path/db.php
         sed -i "s/DBNAME/$new_db_name/g" $install_path/db.php
@@ -373,11 +378,11 @@ else
     # copy distribution to install location
     echo "Installing distribution . . ."
     cp -R distfiles/* $install_path
-    if [ ! -L "$install_path/jquery-ui" ]
+    if [[ ! -L "$install_path/jquery-ui" ]]
     then
 		ln -s $install_path/jquery-ui* $install_path/jquery-ui
 	fi
-    if [ ! -L "$install_path/index.php" ]
+    if [[ ! -L "$install_path/index.php" ]]
     then
 		ln -s $install_path/$LANDING_PAGE $install_path/index.php
 	fi
@@ -400,7 +405,12 @@ echo ""
 echo ""
 echo "$APP_NAME has been $operation."
 base_url=$install_loc_in
-if [ "$operation" = "installed" ]
+if [[ "$operation" == "upgraded" ]]
+then
+    a2enconf $base_url
+    systemctl reload apache2
+fi
+if [[ "$operation" == "installed" ]]
 then
     echo "# $APP_NAME default Apache configuration" > $APACHE_CONF_DIR/$base_url.conf
     echo "" >> $APACHE_CONF_DIR/$base_url.conf
@@ -413,10 +423,10 @@ then
     echo "</Directory>" >> $APACHE_CONF_DIR/$base_url.conf
     echo -n "The apache2 $base_url configuration must be enabled. Would you like to do that now? [Y/n] :"
     read enconf
-    if [ "$enconf" = "" -o "$enconf" = "Y" -o "$enconf" = "y" ] 
+    if [[ "$enconf" == "" || "$enconf" == "Y" || "$enconf" == "y" ]] 
     then
         a2enconf $base_url.conf >/dev/null
-        service apache2 reload
+        systemctl reload apache2
         echo "You can now point a web browser to $base_url on your web server "
         echo "to set up and configure $APP_NAME."
         echo ""