From 3597383a5ac44e7431c4dc8db3172059bf36c814 Mon Sep 17 00:00:00 2001
From: Carlos Galindo <carlos.s.galindo@gmail.com>
Date: Mon, 7 Oct 2019 11:42:28 +0200
Subject: [PATCH] initial commit

---
 src/backbit    | 40 +++++++++++++++++++++++++++
 src/backbitdb  | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++
 src/backbitdir | 72 ++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 187 insertions(+)
 create mode 100755 src/backbit
 create mode 100755 src/backbitdb
 create mode 100755 src/backbitdir

diff --git a/src/backbit b/src/backbit
new file mode 100755
index 0000000..338b08b
--- /dev/null
+++ b/src/backbit
@@ -0,0 +1,40 @@
+#!/bin/bash
+
+if [ -z $1 -o ! -d $1 ]
+then
+    confDir=/etc/backbit
+else
+    confDir=$1
+fi
+
+logDir=/var/log/backbit
+
+if [ ! -d $logDir ]
+then
+    mkdir -p $logDir
+    chmod 700 $logDir
+fi
+
+if [ -x $confDir/before.sh ]
+then
+    . $confDir/before.sh
+fi
+
+for $conf in $(ls $confDir/db/*)
+do
+    ( source $conf
+    $(which backbitdb) > $logDir/$dbName.log
+    )
+done
+
+for $conf in $(ls $confDir/dir/*)
+do
+    ( source $conf
+    $(which backbitdir) > $logDir/$name.log
+    )
+done
+
+if [ -x $confDir/after.sh ]
+then
+    . $confDir/after.sh
+fi
diff --git a/src/backbitdb b/src/backbitdb
new file mode 100755
index 0000000..8be3afc
--- /dev/null
+++ b/src/backbitdb
@@ -0,0 +1,75 @@
+#!/bin/bash
+
+# Backup a sql database, args come from the environment
+# $1, if it exists, contains a list of declarations
+
+if [ -e $1 ]; then
+    source $1
+fi
+
+if [ -z "${outDir}" -o -z "${dbName}" -o -z "${dbPassword}" -o -z "${dbUser}" \
+    	-o -z "${maxBackups}" -o -z "${service}" ]
+then
+    echo "ERROR: Missing data, you need to declare the following:"
+    echo "\toutDir: the directory where the backup will be saved"
+    echo "\tdbName, dbUser, dbPassword: database settings"
+    echo "\tservice: the service to be stopped (webserver)"
+    echo "\tmaxBackups: the number of backups to keep (0 = infinite)"
+    exit 1
+fi
+
+if [ "$(id -u)" != "0" ]
+then
+   echo "ERROR: this script has to be run as root!"
+   exit 1
+fi
+
+dateDir="${outDir}/$(date +"%Y%m%d_%H%M%S")"
+
+if [ ! -d "${dateDir}" ]
+then
+    mkdir -p "${dateDir}"
+else
+    echo "ERROR: the backup directory ${dateDir} already exists!"
+    exit 1
+fi
+
+echo "Begin backup for sql db ${dbName}, at ${dateDir}"
+
+echo -n "Stopping service ${service}..."
+systemctl stop "${service}"
+echo " OK"
+
+trap 'echo -n "Starting service ${service}..."; systemctl start "${service}"; echo " OK"; exit 2' 1 2 3 9 15
+
+echo -n "Backing up ${dbName} database..."
+mysqldump --single-transaction -h localhost -u "${dbUser}" -p"${dbPassword}" "${dbName}" > "${dateDir}/${dbName}.sql"
+echo " OK"
+
+echo -n "Compressing backed up database..."
+pushd "${dateDir}" > /dev/null
+xz -9 "${dbName}.sql"
+sha256sum * > sha256sums
+popd > /dev/null
+echo " OK"
+
+echo -n "Starting service ${service}..."
+systemctl start "${service}"
+echo " OK"
+
+if (( ${maxBackups} != 0 ))
+then
+    nrOfBackups=$(ls -l ${outDir} | grep -c ^d)
+
+    if (( ${nrOfBackups} > ${maxBackups} ))
+    then
+        echo "Removing old backups..."
+        ls -t ${outDir} | tail -$(( nrOfBackups - maxBackups )) | while read dirToRemove; do
+            echo -n "Deleting ${dirToRemove}..."
+            rm -r ${outDir}/${dirToRemove}
+            echo " OK"
+        done
+    fi
+fi
+
+echo "End of SQL backup for ${dbName}, at ${dateDir}"
diff --git a/src/backbitdir b/src/backbitdir
new file mode 100755
index 0000000..5b789b5
--- /dev/null
+++ b/src/backbitdir
@@ -0,0 +1,72 @@
+#!/bin/bash
+
+# Backup a directory, args come from the environment
+# $1, if it exists, contains a list of declarations
+
+if [ -e $1 ]; then
+    source $1
+fi
+
+if [ -z "${outDir}" -o -z "${dir}" -o -z "${maxBackups}" -o -z "${service}" \
+       	-o -z "${name}" ]
+then
+    echo "ERROR: Missing data, you need to declare the following:"
+    echo "\toutDir: the directory where the backup will be saved"
+    echo "\tdir: the directory to back up"
+    echo "\tname: the name of the backup"
+    echo "\tservice: the service to be stopped (webserver)"
+    echo "\tmaxBackups: the number of backups to keep (0 = infinite)"
+    exit 1
+fi
+
+if [ "$(id -u)" != "0" ]
+then
+   echo "ERROR: this script has to be run as root!"
+   exit 1
+fi
+
+dateDir="${outDir}/$(date +"%Y%m%d_%H%M%S")"
+
+if [ ! -d "${dateDir}" ]
+then
+    mkdir -p "${dateDir}"
+else
+    echo "ERROR: the backup directory ${dateDir} already exists!"
+    exit 1
+fi
+
+echo "Begin backup for ${name}, at ${dateDir}"
+
+echo -n "Stopping service ${service}..."
+systemctl stop "${service}"
+echo " OK"
+
+trap 'echo -n "Starting service ${service}..."; systemctl start "${service}"; echo " OK"; exit 2' 1 2 3 9 15
+
+echo -n "Backing up ${name}..."
+tar --preserve-permissions --absolute-names --create --file "${dateDir}/backup.tar.xz" $dir
+pushd "${dateDir}" > /dev/null
+sha256sum * > sha256sums
+popd > /dev/null
+echo " OK"
+
+echo -n "Starting service ${service}..."
+systemctl start "${service}"
+echo " OK"
+
+if (( ${maxBackups} != 0 ))
+then
+    nrOfBackups=$(ls -l ${outDir} | grep -c ^d)
+
+    if (( ${nrOfBackups} > ${maxBackups} ))
+    then
+        echo "Removing old backups..."
+        ls -t ${outDir} | tail -$(( nrOfBackups - maxBackups )) | while read dirToRemove; do
+            echo -n "Deleting ${dirToRemove}..."
+            rm -r ${outDir}/${dirToRemove}
+            echo " OK"
+        done
+    fi
+fi
+
+echo "End of backup for ${name}, at ${dateDir}"