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jirafeau_ynh/scripts/_common.sh

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2017-05-19 21:36:58 +02:00
#!/bin/bash
#=================================================
#=================================================
# TESTING
#=================================================
#=================================================
YNH_EXECUTION_DIR="."
ynh_backup_abstract () {
# A intégrer à ynh_backup directement.
ynh_backup "$@"
echo "$2" "$1" >> backup_list
}
ynh_restore_file () {
file_and_dest=$(grep "^$1" backup_list)
backup_file=${file_and_dest%% *}
backup_dest=${file_and_dest#* }
if [ -f "$backup_dest" ]; then
ynh_die "There is already a file at this path: $backup_dest"
fi
if test -d "$backup_file"; then
sudo cp -a "$backup_file/." "$backup_dest"
else
sudo cp -a "$backup_file" "$backup_dest"
fi
}
ynh_fpm_config () {
finalphpconf="/etc/php5/fpm/pool.d/$app.conf"
ynh_compare_checksum_config "$finalphpconf" 1
sudo cp ../conf/php-fpm.conf "$finalphpconf"
ynh_replace_string "__NAMETOCHANGE__" "$app" "$finalphpconf"
ynh_replace_string "__FINALPATH__" "$final_path" "$finalphpconf"
ynh_replace_string "__USER__" "$app" "$finalphpconf"
sudo chown root: "$finalphpconf"
ynh_store_checksum_config "$finalphpconf"
if [ -e "../conf/php-fpm.ini" ]
then
finalphpini="/etc/php5/fpm/conf.d/20-$app.ini"
ynh_compare_checksum_config "$finalphpini" 1
sudo cp ../conf/php-fpm.ini "$finalphpini"
sudo chown root: "$finalphpini"
ynh_store_checksum_config "$finalphpini"
fi
sudo systemctl reload php5-fpm
}
ynh_remove_fpm_config () {
ynh_secure_remove "/etc/php5/fpm/pool.d/$app.conf"
ynh_secure_remove "/etc/php5/fpm/conf.d/20-$app.ini"
sudo systemctl reload php5-fpm
}
ynh_nginx_config () {
finalnginxconf="/etc/nginx/conf.d/$domain.d/$app.conf"
ynh_compare_checksum_config "$finalnginxconf" 1
sudo cp ../conf/nginx.conf "$finalnginxconf"
# To avoid a break by set -u, use a void substitution ${var:-}. If the variable is not set, it's simply set with an empty variable.
# Substitute in a nginx config file only if the variable is not empty
if test -n "${path_url:-}"; then
ynh_replace_string "__PATH__" "$path_url" "$finalnginxconf"
fi
if test -n "${domain:-}"; then
ynh_replace_string "__DOMAIN__" "$domain" "$finalnginxconf"
fi
if test -n "${port:-}"; then
ynh_replace_string "__PORT__" "$port" "$finalnginxconf"
fi
if test -n "${app:-}"; then
ynh_replace_string "__NAME__" "$app" "$finalnginxconf"
fi
if test -n "${final_path:-}"; then
ynh_replace_string "__FINALPATH__" "$final_path" "$finalnginxconf"
fi
ynh_store_checksum_config "$finalnginxconf"
sudo systemctl reload nginx
}
ynh_remove_nginx_config () {
ynh_secure_remove "/etc/nginx/conf.d/$domain.d/$app.conf"
sudo systemctl reload nginx
}
ynh_store_checksum_config () {
config_file_checksum=checksum_${1//[\/ ]/_} # Replace all '/' and ' ' by '_'
ynh_app_setting_set $app $config_file_checksum $(sudo md5sum "$1" | cut -d' ' -f1)
}
ynh_compare_checksum_config () {
current_config_file=$1
compress_backup=${2:-0} # If $2 is empty, compress_backup will set at 0
config_file_checksum=checksum_${current_config_file//[\/ ]/_} # Replace all '/' and ' ' by '_'
checksum_value=$(ynh_app_setting_get $app $config_file_checksum)
if [ -n "$checksum_value" ]
then # Proceed only if a value was stocked into the app config
if ! echo "$checksum_value $current_config_file" | sudo md5sum -c --status
then # If the checksum is now different
backup_config_file="$current_config_file.backup.$(date '+%d.%m.%y_%Hh%M,%Ss')"
if [ $compress_backup -eq 1 ]
then
sudo tar --create --gzip --file "$backup_config_file.tar.gz" "$current_config_file" # Backup the current config file and compress
backup_config_file="$backup_config_file.tar.gz"
else
sudo cp -a "$current_config_file" "$backup_config_file" # Backup the current config file
fi
echo "Config file $current_config_file has been manually modified since the installation or last upgrade. So it has been duplicated in $backup_config_file" >&2
echo "$backup_config_file" # Return the name of the backup file
fi
fi
}
#=================================================
#=================================================
#=================================================
# CHECKING
#=================================================
CHECK_DOMAINPATH () { # Vérifie la disponibilité du path et du domaine.
sudo yunohost app checkurl $domain$path_url -a $app
}
CHECK_FINALPATH () { # Vérifie que le dossier de destination n'est pas déjà utilisé.
final_path=/var/www/$app
test ! -e "$final_path" || ynh_die "This path already contains a folder"
}
#=================================================
# DISPLAYING
#=================================================
WARNING () { # Écrit sur le canal d'erreur pour passer en warning.
$@ >&2
}
QUIET () { # Redirige la sortie standard dans /dev/null
$@ > /dev/null
}
#=================================================
# BACKUP
#=================================================
BACKUP_FAIL_UPGRADE () {
WARNING echo "Upgrade failed."
app_bck=${app//_/-} # Replace all '_' by '-'
if sudo yunohost backup list | grep -q $app_bck-pre-upgrade$backup_number; then # Vérifie l'existence de l'archive avant de supprimer l'application et de restaurer
sudo yunohost app remove $app # Supprime l'application avant de la restaurer.
sudo yunohost backup restore --ignore-hooks $app_bck-pre-upgrade$backup_number --apps $app --force # Restore the backup if upgrade failed
ynh_die "The app was restored to the way it was before the failed upgrade."
fi
}
BACKUP_BEFORE_UPGRADE () { # Backup the current version of the app, restore it if the upgrade fails
backup_number=1
old_backup_number=2
app_bck=${app//_/-} # Replace all '_' by '-'
if sudo yunohost backup list | grep -q $app_bck-pre-upgrade1; then # Vérifie l'existence d'une archive déjà numéroté à 1.
backup_number=2 # Et passe le numéro de l'archive à 2
old_backup_number=1
fi
sudo yunohost backup create --ignore-hooks --apps $app --name $app_bck-pre-upgrade$backup_number # Créer un backup différent de celui existant.
if [ "$?" -eq 0 ]; then # Si le backup est un succès, supprime l'archive précédente.
if sudo yunohost backup list | grep -q $app_bck-pre-upgrade$old_backup_number; then # Vérifie l'existence de l'ancienne archive avant de la supprimer, pour éviter une erreur.
QUIET sudo yunohost backup delete $app_bck-pre-upgrade$old_backup_number
fi
else # Si le backup a échoué
ynh_die "Backup failed, the upgrade process was aborted."
fi
}
HUMAN_SIZE () { # Transforme une taille en Ko en une taille lisible pour un humain
human=$(numfmt --to=iec --from-unit=1K $1)
echo $human
}
CHECK_SIZE () { # Vérifie avant chaque backup que l'espace est suffisant
file_to_analyse=$1
backup_size=$(sudo du --summarize "$file_to_analyse" | cut -f1)
free_space=$(sudo df --output=avail "/home/yunohost.backup" | sed 1d)
if [ $free_space -le $backup_size ]
then
WARNING echo "Espace insuffisant pour sauvegarder $file_to_analyse."
WARNING echo "Espace disponible: $(HUMAN_SIZE $free_space)"
ynh_die "Espace nécessaire: $(HUMAN_SIZE $backup_size)"
fi
}
#=================================================
#=================================================
# FUTUR YNH HELPERS
#=================================================
# Importer ce fichier de fonction avant celui des helpers officiel
# Ainsi, les officiels prendront le pas sur ceux-ci le cas échéant
#=================================================
# Normalize the url path syntax
# Handle the slash at the beginning of path and its absence at ending
# Return a normalized url path
#
# example: url_path=$(ynh_normalize_url_path $url_path)
# ynh_normalize_url_path example -> /example
# ynh_normalize_url_path /example -> /example
# ynh_normalize_url_path /example/ -> /example
# ynh_normalize_url_path / -> /
#
# usage: ynh_normalize_url_path path_to_normalize
# | arg: url_path_to_normalize - URL path to normalize before using it
ynh_normalize_url_path () {
path_url=$1
test -n "$path_url" || ynh_die "ynh_normalize_url_path expect a URL path as first argument and received nothing."
if [ "${path_url:0:1}" != "/" ]; then # If the first character is not a /
path_url="/$path_url" # Add / at begin of path variable
fi
if [ "${path_url:${#path_url}-1}" == "/" ] && [ ${#path_url} -gt 1 ]; then # If the last character is a / and that not the only character.
path_url="${path_url:0:${#path_url}-1}" # Delete the last character
fi
echo $path_url
}
# Manage a fail of the script
#
# Print a warning to inform that the script was failed
# Execute the ynh_clean_setup function if used in the app script
#
# usage of ynh_clean_setup function
# This function provide a way to clean some residual of installation that not managed by remove script.
# To use it, simply add in your script:
# ynh_clean_setup () {
# instructions...
# }
# This function is optionnal.
#
# Usage: ynh_exit_properly is used only by the helper ynh_abort_if_errors.
# You must not use it directly.
ynh_exit_properly () {
exit_code=$?
if [ "$exit_code" -eq 0 ]; then
exit 0 # Exit without error if the script ended correctly
fi
trap '' EXIT # Ignore new exit signals
set +eu # Do not exit anymore if a command fail or if a variable is empty
echo -e "!!\n $app's script has encountered an error. Its execution was cancelled.\n!!" >&2
if type -t ynh_clean_setup > /dev/null; then # Check if the function exist in the app script.
ynh_clean_setup # Call the function to do specific cleaning for the app.
fi
ynh_die # Exit with error status
}
# Exit if an error occurs during the execution of the script.
#
# Stop immediatly the execution if an error occured or if a empty variable is used.
# The execution of the script is derivate to ynh_exit_properly function before exit.
#
# Usage: ynh_abort_if_errors
ynh_abort_if_errors () {
set -eu # Exit if a command fail, and if a variable is used unset.
trap ynh_exit_properly EXIT # Capturing exit signals on shell script
}
# Create a system user
#
# usage: ynh_system_user_create user_name [home_dir]
# | arg: user_name - Name of the system user that will be create
# | arg: home_dir - Path of the home dir for the user. Usually the final path of the app. If this argument is omitted, the user will be created without home
ynh_system_user_create () {
if ! ynh_system_user_exists "$1" # Check if the user exists on the system
then # If the user doesn't exist
if [ $# -ge 2 ]; then # If a home dir is mentioned
user_home_dir="-d $2"
else
user_home_dir="--no-create-home"
fi
sudo useradd $user_home_dir --system --user-group $1 --shell /usr/sbin/nologin || ynh_die "Unable to create $1 system account"
fi
}
# Delete a system user
#
# usage: ynh_system_user_delete user_name
# | arg: user_name - Name of the system user that will be create
ynh_system_user_delete () {
if ynh_system_user_exists "$1" # Check if the user exists on the system
then
echo "Remove the user $1" >&2
sudo userdel $1
else
echo "The user $1 was not found" >&2
fi
}
# Substitute/replace a string by another in a file
#
# usage: ynh_replace_string match_string replace_string target_file
# | arg: match_string - String to be searched and replaced in the file
# | arg: replace_string - String that will replace matches
# | arg: target_file - File in which the string will be replaced.
ynh_replace_string () {
delimit=@
match_string=${1//${delimit}/"\\${delimit}"} # Escape the delimiter if it's in the string.
replace_string=${2//${delimit}/"\\${delimit}"}
workfile=$3
sudo sed --in-place "s${delimit}${match_string}${delimit}${replace_string}${delimit}g" "$workfile"
}
# Remove a file or a directory securely
#
# usage: ynh_secure_remove path_to_remove
# | arg: path_to_remove - File or directory to remove
ynh_secure_remove () {
path_to_remove=$1
forbidden_path=" \
/var/www \
/home/yunohost.app"
if [[ "$forbidden_path" =~ "$path_to_remove" \
# Match all paths or subpaths in $forbidden_path
|| "$path_to_remove" =~ ^/[[:alnum:]]+$ \
# Match all first level paths from / (Like /var, /root, etc...)
|| "${path_to_remove:${#path_to_remove}-1}" = "/" ]]
# Match if the path finishes by /. Because it seems there is an empty variable
then
echo "Avoid deleting $path_to_remove." >&2
else
if [ -e "$path_to_remove" ]
then
sudo rm -R "$path_to_remove"
else
echo "$path_to_remove wasn't deleted because it doesn't exist." >&2
fi
fi
}
# Download, check integrity, uncompress and patch the source from app.src
#
# The file conf/app.src need to contains:
#
# SOURCE_URL=Address to download the app archive
# SOURCE_SUM=Control sum
# # (Optional) Programm to check the integrity (sha256sum, md5sum$YNH_EXECUTION_DIR/...)
# # default: sha256
# SOURCE_SUM_PRG=sha256
# # (Optional) Archive format
# # default: tar.gz
# SOURCE_FORMAT=tar.gz
# # (Optional) Put false if source are directly in the archive root
# # default: true
# SOURCE_IN_SUBDIR=false
# # (Optionnal) Name of the local archive (offline setup support)
# # default: ${src_id}.${src_format}
# SOURCE_FILENAME=example.tar.gz
#
# Details:
# This helper download sources from SOURCE_URL if there is no local source
# archive in /opt/yunohost-apps-src/APP_ID/SOURCE_FILENAME
#
# Next, it check the integrity with "SOURCE_SUM_PRG -c --status" command.
#
# If it's ok, the source archive will be uncompress in $dest_dir. If the
# SOURCE_IN_SUBDIR is true, the first level directory of the archive will be
# removed.
#
# Finally, patches named sources/patches/${src_id}-*.patch and extra files in
# sources/extra_files/$src_id will be applyed to dest_dir
#
#
# usage: ynh_setup_source dest_dir [source_id]
# | arg: dest_dir - Directory where to setup sources
# | arg: source_id - Name of the app, if the package contains more than one app
ynh_setup_source () {
local dest_dir=$1
local src_id=${2:-app} # If the argument is not given, source_id equal "app"
# Load value from configuration file (see above for a small doc about this file
# format)
local src_url=$(grep 'SOURCE_URL=' "$YNH_EXECUTION_DIR/../conf/${src_id}.src" | cut -d= -f2-)
local src_sum=$(grep 'SOURCE_SUM=' "$YNH_EXECUTION_DIR/../conf/${src_id}.src" | cut -d= -f2-)
local src_sumprg=$(grep 'SOURCE_SUM_PRG=' "$YNH_EXECUTION_DIR/../conf/${src_id}.src" | cut -d= -f2-)
local src_format=$(grep 'SOURCE_FORMAT=' "$YNH_EXECUTION_DIR/../conf/${src_id}.src" | cut -d= -f2-)
local src_in_subdir=$(grep 'SOURCE_IN_SUBDIR=' "$YNH_EXECUTION_DIR/../conf/${src_id}.src" | cut -d= -f2-)
local src_filename=$(grep 'SOURCE_FILENAME=' "$YNH_EXECUTION_DIR/../conf/${src_id}.src" | cut -d= -f2-)
# Default value
src_sumprg=${src_sumprg:-sha256sum}
src_in_subdir=${src_in_subdir:-true}
src_format=${src_format:-tar.gz}
src_format=$(echo "$src_format" | tr '[:upper:]' '[:lower:]')
if [ "$src_filename" = "" ] ; then
src_filename="${src_id}.${src_format}"
fi
local local_src="/opt/yunohost-apps-src/${YNH_APP_ID}/${src_filename}"
if test -e "$local_src"
then # Use the local source file if it is present
sudo cp $local_src $src_filename
else # If not, download the source
wget -nv -O $src_filename $src_url
fi
# Check the control sum
echo "${src_sum} ${src_filename}" | ${src_sumprg} -c --status \
|| ynh_die "Corrupt source"
# Extract source into the app dir
sudo mkdir -p "$dest_dir"
if [ "$src_format" = "zip" ]
then
# Zip format
# Using of a temp directory, because unzip doesn't manage --strip-components
if $src_in_subdir ; then
local tmp_dir=$(mktemp -d)
unzip -quo $src_filename -d "$tmp_dir"
sudo cp -a $tmp_dir/*/. "$dest_dir"
ynh_secure_remove "$tmp_dir"
else
sudo unzip -quo $src_filename -d "$dest_dir"
fi
else
local strip=""
if $src_in_subdir ; then
strip="--strip-components 1"
fi
if [[ "$src_format" =~ ^tar.gz|tar.bz2|tar.xz$ ]] ; then
sudo tar -xf $src_filename -C "$dest_dir" $strip
else
ynh_die "Archive format unrecognized."
fi
fi
# Apply patches
if (( $(find $YNH_EXECUTION_DIR/../sources/patches/ -type f -name "${src_id}-*.patch" 2> /dev/null | wc -l) > "0" )); then
local old_dir=$(pwd)
(cd "$dest_dir" \
&& for p in $YNH_EXECUTION_DIR/../sources/patches/${src_id}-*.patch; do \
patch -p1 < $p; done) \
|| ynh_die "Unable to apply patches"
cd $old_dir
fi
# Add supplementary files
if test -e "$YNH_EXECUTION_DIR/../sources/extra_files/${src_id}"; then
cp -a $YNH_EXECUTION_DIR/../sources/extra_files/$src_id/. "$dest_dir"
fi
}