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[enh] Add helper

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Rafi59 2017-07-03 09:26:31 +02:00 • committed by GitHub
parent 00ee052527
commit 17c14c004e
1 changed files with 35 additions and 0 deletions
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35
scripts/_common.sh
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@ -191,6 +191,41 @@ ynh_remove_logrotate () {
sudo rm "/etc/logrotate.d/$app"
fi
}
# Verify the checksum and backup the file if it's different
# This helper is primarily meant to allow to easily backup personalised/manually
# modified config files.
#
# $app should be defined when calling this helper
#
# usage: ynh_backup_if_checksum_is_different file [compress]
# | arg: file - The file on which the checksum test will be perfomed.
# | arg: compress - 1 to compress the backup instead of a simple copy
# A compression is needed for a file which will be analyzed even if its name is different.
#
# | ret: Return the name a the backup file, or nothing
ynh_backup_if_checksum_is_different () {
local file=$1
local compress_backup=${2:-0} # If $2 is empty, compress_backup will set at 0
local checksum_setting_name=checksum_${file//[\/ ]/_} # Replace all '/' and ' ' by '_'
local checksum_value=$(ynh_app_setting_get $app $checksum_setting_name)
if [ -n "$checksum_value" ]
then # Proceed only if a value was stored into the app settings
if ! echo "$checksum_value $file" | sudo md5sum -c --status
then # If the checksum is now different
backup_file="$file.backup.$(date '+%d.%m.%y_%Hh%M,%Ss')"
if [ $compress_backup -eq 1 ]
then
sudo tar --create --gzip --file "$backup_file.tar.gz" "$file" # Backup the current file and compress
backup_file="$backup_file.tar.gz"
else
sudo cp -a "$file" "$backup_file" # Backup the current file
fi
echo "File $file has been manually modified since the installation or last upgrade. So it has been duplicated in $backup_file" >&2
echo "$backup_file" # Return the name of the backup file
fi
fi
}
# Create a dedicated php-fpm config
final_path=$DESTDIR