auto-sync.sh

#!/bin/bash

#   When this script is launched it will:
#       1) log into the L4dgoldminers/GMservers github repo and download the server config locally
#       2) Make sure the local server config is up-to-date with the github config
#       3) Log any errors or rsync updates to githubsync_rsyncUpdates.log & githubsync_errors.log
#       4) After it's done it'll correct the server.cfg hostname & rcon_password fields, as well as databases.cfg passwords
#               Note: this script assumes all passwords are the same in database.cfg
#
#       Installation:
#           change file permission: 'chmod 755 auto-sync.sh'
#           Run script manually first time to make sure it's working.
#               (This means refreshing the directory and checking those two log files)
#
#           After verifying it's working properly, install on a cron job that executes once a day:
#               Enter the command 'crontab -e' (select "nano" if you're unfamiliar with using the other editors)
#               0 8 * * * /path/to/auto-sync.sh # Launch auto-sync once per day
#
#           As an additional step to be sure the cronjob is launching it properly, delete the "githubsync_rsyncUpdates.log"
#               log file and see if it regenerates automatically the next day.
#
#==================================================================
# configuration :

#github credentials
github_user=""
github_pass="" # use a personal access token, passwords will be deprecated

#L4D2 server credentials
server_hostname="[GM] "
server_rcon_password=""
mysql_password="" # assumes every password in databases.cfg is the same.

# linux server directory (leave out trailing slash '/')
local_dir="/root/L4D2/left4dead2" #directory where 'addons/' and 'cfg/' folders exist

#log file for errors / update status
LogFile="githubsync_rsyncUpdates.log"
ErrorFile="githubsync_errors.log"

# Exclude these files from being synced to the 'addons/' folder
Excludes_addons="--exclude sourcemod/configs/sourcebans/sourcebans.cfg \
--exclude sourcemod/configs/sourcebans/sb_admin_groups.cfg \
--exclude sourcemod/configs/sourcebans/sb_admins.cfg \
--exclude sourcemod/data/SourceTVDemos \
--exclude sourcemod/logs \
--exclude sourcemod/gamedata/core.games \
--exclude sourcemod/gamedata/sdkhooks.games \
--exclude sourcemod/gamedata/sdktools.games \
--exclude sourcemod/gamedata/sm-cstrike.games \
--exclude sourcemod/gamedata/funcommands.games.txt \
--exclude sourcemod/gamedata/sm-tf2.games.txt \
--exclude sourcemod/gamedata/accelerator.games.txt \
--exclude sourcemod/configs/sourcebans/overrides_backup.cfg \
--exclude sourcemod/data/sqlite/sourcecomms-queue.sq3 \
--exclude sourcemod/data/dumps \
--exclude sourcemod/data/sqlite/sourcebans-queue.sq3"

# Exclude these files from being synced to the 'cfg/sourcemod' folder
Excludes_cfg_sourcemod="--exclude Sm_SourceSleuth.cfg"

# END configuration
#==================================================================

date=$(date '+%Y-%m-%d:%H:%M')

LogCriticalError () {
    echo -e "\n==================== $date ====================\n" >> $ErrorFile
    echo "Error: $1" >> $ErrorFile
    echo "Error: $1"
    rm -rf GMservers
    exit
}

# Might be paranoid check. Just in case someone has a folder already named that and is using it...
[ -d "GMservers/" ] && LogCriticalError "Folder named 'GMservers/' already exists in this directory."

if ! git clone https://$github_user:$github_pass@github.com/L4dgoldminers/GMservers.git
then
    LogCriticalError "git clone failed. Check 'github credentials' configuration."
fi

databasesCFG="$local_dir/addons/sourcemod/configs/databases.cfg"
serverCFG="$local_dir/cfg/server.cfg"
addons_folder="$local_dir/addons/" #keep trailing slash (/) at end
cfg_folder="$local_dir/cfg/" #keep trailing slash (/) at end
cfg_sourcemod_folder="$local_dir/cfg/sourcemod/" #keep trailing slash (/) at end

# validate folders
if [ "$1" == "newserver" ]; then
    echo "Validating relevant folders for new install of L4D2.." && sleep 3

    [ ! -d "$addons_folder" ] && LogCriticalError "'addons/' folder doesn't exist. Check 'local_dir' variable."
    [ ! -d "$cfg_folder" ] && LogCriticalError "'cfg/' folder doesn't exist. Check 'local_dir' variable."
else
    [ ! -d "$addons_folder" ] && LogCriticalError "'addons/' folder doesn't exist. Check 'local_dir' variable."
    [ ! -d "$cfg_sourcemod_folder" ] && LogCriticalError "'cfg/sourcemod/' folder doesn't exist. Check 'local_dir' variable."
    [ ! -e "$databasesCFG" ] && LogCriticalError "'$databasesCFG' file doesn't exist. Check 'local_dir' variable."
    [ ! -e "$serverCFG" ] && LogCriticalError "'$serverCFG' file doesn't exist. Check 'local_dir' variable."
fi

# validate variables
[ -z "$server_hostname" ] && LogCriticalError "'server_hostname' variable left blank."
[ -z "$server_rcon_password" ] && LogCriticalError "'server_rcon_password' variable left blank."
[ -z "$mysql_password" ] && LogCriticalError "'mysql_password' variable left blank."
[ -z "$LogFile" ] && LogCriticalError "'LogFile' variable left blank."
[ -z "$ErrorFile" ] && LogCriticalError "'ErrorFile' variable left blank."

remote_dir_addons="$(pwd)/GMservers/Server Config/addons/" #keep trailing slash (/) at end
remote_dir_cfg_sourcemod="$(pwd)/GMservers/Server Config/cfg/sourcemod/" #keep trailing slash (/) at end
remote_dir_serverCFG="$(pwd)/GMservers/Server Config/cfg/server.cfg"

Opts="-ahiO --no-perms --no-owner --no-group"

# log file starts here
echo -e "\n==================== $date ====================\n\nUpdate check started." >> $LogFile

if [ "$1" == "newserver" ]; then
    echo "Rsyncing server config to new install of L4D2" && sleep 3

    # rsync 'addons/' folder
    rsync $Opts "$remote_dir_addons" "$addons_folder" >> $LogFile
    # rsync 'cfg/sourcemod/' folder (note: don't rsync 'cfg/' by itself cause it would delete official l4d2 files within cfg/)
    rsync $Opts "$remote_dir_cfg_sourcemod" "$cfg_sourcemod_folder" >> $LogFile
else
    # rsync 'addons/' folder
    rsync $Opts --delete $Excludes_addons "$remote_dir_addons" "$addons_folder" >> $LogFile

    # rsync 'cfg/sourcemod/' folder (note: don't rsync 'cfg/' by itself cause it would delete official l4d2 files within cfg/)
    rsync $Opts --delete $Excludes_cfg_sourcemod "$remote_dir_cfg_sourcemod" "$cfg_sourcemod_folder" >> $LogFile
fi

#server.cfg - replace hostname and rcon_password with correct entries
mv "$remote_dir_serverCFG" "$serverCFG"
sed -i "s/RCON_PASS_HERE/$server_rcon_password/" $serverCFG
sed -i "s/SERVER_HOSTNAME_HERE/$server_hostname/" $serverCFG

# replace MySQL password in databases.cfg (do this after rsync completes)
sed -i "s/MYSQL_PASS/$mysql_password/" $databasesCFG

rm -rf GMservers

# Remove redundant text from log file
sed -i "/\.\.t\.\.\.\.\.\./d" $LogFile