Fix version number (don't ask)

Closes #22

lug-helper.sh

@@ -48,9 +48,9 @@
 ############################################################################
 
 # Check if script is run as root
-if [ "$(id -u)" = 0 ]; then
-echo "This script is not supposed to be run as root!"
-exit 1
+if [ "$(id -u)" -eq 0 ]; then
+    echo "This script is not supposed to be run as root!"
+    exit 1
 fi
 
 # Check for dependencies
@@ -106,6 +106,8 @@ runners_dir="$data_dir/lutris/runners/wine"
 runner_sources=(
     "RawFox" "https://api.github.com/repos/rawfoxDE/raw-wine/releases"
     "Molotov/Snatella" "https://api.github.com/repos/snatella/wine-runner-sc/releases"
+    "/dev/null" "https://api.github.com/repos/gort818/wine-sc-lug/releases"
+    "GloriousEggroll" "https://api.github.com/repos/GloriousEggroll/wine-ge-custom/releases"
 )
 # Set a maximum number of runner versions to display from each url
 max_runners=20
@@ -124,6 +126,11 @@ else
     lug_logo="info"
 fi
 
+# Github repo and script version info
+repo="the-sane/lug-helper"
+releases_url="https://github.com/the-sane/lug-helper/releases"
+current_version="v1.9.2"
+
 ############################################################################
 ############################################################################
 
@@ -256,6 +263,7 @@ message() {
 #   This text will be displayed above the menu options.
 #   Zenity supports Pango Markup for text formatting.
 # - The integer "menu_height" specifies the height of the zenity menu.
+# - The string "cancel_label" should contain the text of the cancel button.
 # 
 # The final element in each array is expected to be a quit option.
 #
@@ -277,6 +285,8 @@ menu() {
         debug_print exit "Script error: The string 'menu_text_terminal' was not set\nbefore calling the menu function. Aborting."
     elif [ -z "$menu_height" ]; then
         debug_print exit "Script error: The string 'menu_height' was not set\nbefore calling the menu function. Aborting."
+    elif [ -z "$cancel_label" ]; then
+        debug_print exit "Script error: The string 'menu_height' was not set\nbefore calling the menu function. Aborting."
     fi
     
     # Use Zenity if it is available
@@ -296,7 +306,7 @@ menu() {
         done
 
         # Display the zenity radio button menu
-        choice="$(zenity --list --radiolist --width="480" --height="$menu_height" --text="$menu_text_zenity" --title="Star Citizen LUG Helper" --hide-header --window-icon=$lug_logo --column="" --column="Option" "${zen_options[@]}" 2>/dev/null)"
+        choice="$(zenity --list --radiolist --width="480" --height="$menu_height" --text="$menu_text_zenity" --title="Star Citizen LUG Helper" --hide-header --cancel-label "$cancel_label" --window-icon=$lug_logo --column="" --column="Option" "${zen_options[@]}" 2>/dev/null)"
 
         # Loop through the options array to match the chosen option
         matched="false"
@@ -470,7 +480,7 @@ getdirs() {
     # $live_or_ptu is set in the set_version() function
     ############################################################################
     # The game's user directory
-    user_dir="$game_path/$live_or_ptu/USER/Client/0/"
+    user_dir="$game_path/$live_or_ptu/USER/Client/0"
     # The location within the USER directory to which the game exports keybinds
     keybinds_dir="$user_dir/Controls/Mappings"
     # Shaders directory
@@ -663,7 +673,7 @@ filelimit_check() {
 
 # Check total system memory
 memory_check() {
-    memtotal="$(awk '/MemTotal/ {printf "%.1f \n", $2/1024/1024}' /proc/meminfo)"
+    memtotal="$(LC_NUMERIC=C awk '/MemTotal/ {printf "%.1f \n", $2/1024/1024}' /proc/meminfo)"
     if [ ${memtotal%.*} -ge "15" ]; then
         preflight_pass+=("Your system has $memtotal GB of memory.")  
     else
@@ -792,6 +802,9 @@ runner_select_delete() {
         menu_height="400"
     fi
     
+    # Set the label for the cancel button
+    cancel_label="Go Back"
+       
     # Call the menu function.  It will use the options as configured above
     menu
 }
@@ -819,6 +832,9 @@ runner_install() {
         *.tgz)
             runner_name="$(basename "$runner_file" .tgz)"
             ;;
+        *.tar.xz)
+            runner_name="$(basename "$runner_file" .tar.xz)"
+            ;;
         *)
             debug_print exit "Unknown archive filetype in runner_install function. Aborting."
             ;;
@@ -873,7 +889,7 @@ runner_install() {
     # Get the path of the first item listed in the archive
     # This should either be a subdirectory or the path ./
     # depending on how the archive was created
-    first_filepath="$(stdbuf -oL tar -tzf "$tmp_dir/$runner_file" | head -n 1)"
+    first_filepath="$(stdbuf -oL tar -tf "$tmp_dir/$runner_file" | head -n 1)"
     
     # Extract the runner
     case "$first_filepath" in
@@ -882,10 +898,10 @@ runner_install() {
             debug_print continue "Installing runner into $runners_dir/$runner_name..."
             if [ "$use_zenity" -eq 1 ]; then
                 # Use Zenity progress bar
-                mkdir -p "$runners_dir/$runner_name" && tar -xzf "$tmp_dir/$runner_file" -C "$runners_dir/$runner_name" | \
+                mkdir -p "$runners_dir/$runner_name" && tar -xf "$tmp_dir/$runner_file" -C "$runners_dir/$runner_name" | \
                 zenity --progress --pulsate --no-cancel --auto-close --title="Star Citizen LUG Helper" --text="Installing runner...\n" 2>/dev/null
             else
-                mkdir -p "$runners_dir/$runner_name" && tar -xzf "$tmp_dir/$runner_file" -C "$runners_dir/$runner_name"
+                mkdir -p "$runners_dir/$runner_name" && tar -xf "$tmp_dir/$runner_file" -C "$runners_dir/$runner_name"
             fi
             lutris_needs_restart="true"
             ;;
@@ -894,10 +910,10 @@ runner_install() {
             debug_print continue "Installing runner into $runners_dir..."
             if [ "$use_zenity" -eq 1 ]; then
                 # Use Zenity progress bar
-                mkdir -p "$runners_dir" && tar -xzf "$tmp_dir/$runner_file" -C "$runners_dir" | \
+                mkdir -p "$runners_dir" && tar -xf "$tmp_dir/$runner_file" -C "$runners_dir" | \
                 zenity --progress --pulsate --no-cancel --auto-close --title="Star Citizen LUG Helper" --text="Installing runner...\n" 2>/dev/null
             else
-                mkdir -p "$runners_dir" && tar -xzf "$tmp_dir/$runner_file" -C "$runners_dir"
+                mkdir -p "$runners_dir" && tar -xf "$tmp_dir/$runner_file" -C "$runners_dir"
             fi
             lutris_needs_restart="true"
             ;;
@@ -916,7 +932,8 @@ runner_select_install() {
         debug_print exit "Script error:  The runner_select_install function expects a numerical argument. Aborting."
     fi
 
-    # Store the url from the selected contributor
+    # Store info from the selected contributor
+    contributor_name="${runner_sources[$1]}"
     contributor_url="${runner_sources[$1+1]}"
 
     # Check the provided contributor url to make sure we know how to handle it
@@ -930,12 +947,23 @@ runner_select_install() {
             debug_print exit "Script error:  Unknown api/url format in runner_sources array. Aborting."
             ;;
     esac
+    
+    # Check GlibC version against the requirements of the selected runner
+    if [ "$contributor_name" = "/dev/null" ]; then
+        required_glibc="2.33"
+        system_glibc="$(ldd --version | awk '/ldd/{print $NF}')"
+
+        if [ "$(bc <<< "$required_glibc > $system_glibc")" = "1" ]; then
+            message warning "Your glibc version is incompatible with the selected runner.\n\nSystem glibc: v$system_glibc\nMinimum required glibc: v$required_glibc"
+            return 1
+        fi
+    fi
 
     # Fetch a list of runner versions from the selected contributor
     # To add new sources, handle them here, in the if statement
     # just above, and the runner_install function above
     if [ "$runner_url_type" = "github" ]; then
-        runner_versions=($(curl -s "$contributor_url" | awk '/browser_download_url/ {print $2}' | xargs basename -a))
+        runner_versions=($(curl -s "$contributor_url" | awk '/browser_download_url/ {print $2}' | grep -vE "*.sha512sum" | xargs basename -a))
     else
         debug_print exit "Script error:  Unknown api/url format in runner_sources array. Aborting."
     fi
@@ -967,6 +995,9 @@ runner_select_install() {
             *.tgz)
                 runner_name="$(basename "${runner_versions[i]}" .tgz)"
                 ;;
+            *.tar.xz)
+                runner_name="$(basename "${runner_versions[i]}" .tar.xz)"
+                ;;        
             *)
                 debug_print exit "Unknown archive filetype in runner_select_install function. Aborting."
                 ;;
@@ -991,6 +1022,9 @@ runner_select_install() {
         menu_height="400"
     fi
     
+    # Set the label for the cancel button
+    cancel_label="Go Back"
+       
     # Call the menu function.  It will use the options as configured above
     menu
 }
@@ -1038,6 +1072,9 @@ runner_manage() {
         # Calculate the total height the menu should be
         menu_height="$(($menu_option_height * ${#menu_options[@]} + $menu_text_height))"
         
+       # Set the label for the cancel button
+       cancel_label="Go Back"
+       
         # Call the menu function.  It will use the options as configured above
         menu
     done
@@ -1175,7 +1212,10 @@ maintenance_menu() {
 
         # Calculate the total height the menu should be
         menu_height="$(($menu_option_height * ${#menu_options[@]} + $menu_text_height))"
-        
+       
+       # Set the label for the cancel button
+       cancel_label="Go Back"
+       
         # Call the menu function.  It will use the options as configured above
         menu
     done
@@ -1216,6 +1256,19 @@ reset_helper() {
     fi
 }
 
+# Get the latest release version of a repo. Expects "user/repo_name" as input
+# Credits for this go to https://gist.github.com/lukechilds/a83e1d7127b78fef38c2914c4ececc3c
+get_latest_release() {
+    # Sanity check
+    if [ "$#" -lt 1 ]; then
+        debug_print exit "Script error: The get_latest_release function expects one argument. Aborting."
+    fi
+    
+    curl --silent "https://api.github.com/repos/$1/releases/latest" | # Get latest release from GitHub api
+        grep '"tag_name":' |                                            # Get tag line
+        sed -E 's/.*"([^"]+)".*/\1/'                                    # Pluck JSON value
+}
+
 quit() {
     exit 0
 }
@@ -1235,6 +1288,19 @@ fi
 live_or_ptu="$live_dir"
 lutris_needs_restart="false"
 
+# Check if a newer verison of the script is available
+latest_version=$(get_latest_release "$repo")
+
+if [ "$latest_version" != "$current_version" ]; then
+    if [ "$use_zenity" -eq 1 ]; then
+        releases_url_formatted="<a href='$releases_url'>$releases_url</a>"
+    else
+        releases_url_formatted="$releases_url"
+    fi
+    
+    message info "The latest version of the LUG Helper is $latest_version\nYou are using $current_version\n\nYou can download new releases here:\n$releases_url_formatted"
+fi
+
 # If invoked with command line arguments, process them and exit
 if [ "$#" -gt 0 ]; then
     while [ "$#" -gt 0 ]
@@ -1343,6 +1409,9 @@ while true; do
     # Calculate the total height the menu should be
     menu_height="$(($menu_option_height * ${#menu_options[@]} + $menu_text_height))"
     
+    # Set the label for the cancel button
+    cancel_label="Quit"
+    
     # Call the menu function.  It will use the options as configured above
     menu
 done