#!/bin/sh

# Configuration
BASE_DIR="/var/backups/backup_s3_example.net-upload"
MY_CONFIG="/root/.s3cfg"
BUCKET_NAME="$1"

# Exemple de fichier de configuration s3cfg (version 1.0.0)
#  [default]
#  access_key = ABCDEFGHIJKLMNOPQRST
#  secret_key = KVwKO+9fea9jfazeafePfjaeafpagefiaea+FAEq
#  gpg_passphrase = TOTO
#  bucket_location = US
#  cloudfront_host = cloudfront.amazonaws.com
#  cloudfront_resource = /2010-07-15/distribution
#  default_mime_type = binary/octet-stream
#  delete_removed = False
#  dry_run = False
#  encoding = UTF-8
#  encrypt = False
#  follow_symlinks = False
#  force = False
#  get_continue = False
#  gpg_command = /usr/bin/gpg
#  gpg_decrypt = %(gpg_command)s -d --verbose --no-use-agent --batch --yes --passphrase-fd %(passphrase_fd)s -o %(output_file)s %(input_file)s
#  gpg_encrypt = %(gpg_command)s -c --verbose --no-use-agent --batch --yes --passphrase-fd %(passphrase_fd)s -o %(output_file)s %(input_file)s
#  guess_mime_type = True
#  host_base = s3.amazonaws.com
#  host_bucket = %(bucket)s.s3.amazonaws.com
#  human_readable_sizes = False
#  list_md5 = False
#  log_target_prefix = 
#  preserve_attrs = True
#  progress_meter = True
#  proxy_host = 
#  proxy_port = 0
#  recursive = False
#  recv_chunk = 4096
#  reduced_redundancy = False
#  send_chunk = 4096
#  simpledb_host = sdb.amazonaws.com
#  skip_existing = False
#  socket_timeout = 10
#  urlencoding_mode = normal
#  use_https = True
#  verbosity = WARNING

# Diminution de la priorité du script
renice -n 20 $$ >/dev/null 2>&1

# Vérifications initiales
if [ ! -d "$BASE_DIR" ]; then
	echo "ERREUR : répertoire de sauvegarde inexistant : $BASE_DIR ." >&2
	exit 1
fi
if [ "$BUCKET_NAME" = "" ]; then
	echo "ERREUR : aucun nom de seau fourni." >&2
	exit 1
fi

# Lancement de la synchronisation
s3cmd -c "$MY_CONFIG" sync "s3://$BUCKET_NAME/" "$BASE_DIR/"