diff --git a/README.md b/README.md
index 1f72177..8476f1d 100644
--- a/README.md
+++ b/README.md
@@ -1,14 +1,6 @@
-Jappix for Yunohost
--------------------
+#Jappix package for YunoHost
 
-**Shipped version:** 1.1.6
+- **YunoHost**: https://yunohost.org/
+- **Shipped version:** 1.1.7
 
-[Jappix](https://jappix.org) is a full-featured XMPP web-client
-with an open social platform which enables you to host your communication
-platform wherever you want to.
-
-## Links ##
-
-**Jappix**: https://jappix.org/
-
-**YunoHost**: https://yunohost.org/
+Jappix is a fully-featured XMPP web-client with an open social platform which enables you to host your communication platform wherever you want to.
diff --git a/check_process b/check_process
index 31337ff..3aefe86 100644
--- a/check_process
+++ b/check_process
@@ -15,7 +15,7 @@
 		upgrade=1
 		backup_restore=1
 		multi_instance=0
-		wrong_user=1
+		wrong_user=0
 		wrong_path=1
 		incorrect_path=1
 		corrupt_source=0
@@ -26,9 +26,9 @@
 	Level 1=auto
 	Level 2=auto
 	Level 3=auto
-# Niveau 4 ignoré, mais c'est à confirmé par le mainteneur de l'application.
-	Level 4=na
-	Level 5=auto
+	Level 4=1
+# Niveau 5: le test ne semble pas tout à fait savoir ce qu'est vraiment un "exit" : https://github.com/YunoHost-Apps/jappix_ynh/issues/23
+	Level 5=1
 	Level 6=auto
 	Level 7=auto
 	Level 8=0
diff --git a/conf/app.src b/conf/app.src
new file mode 100644
index 0000000..c461c3f
--- /dev/null
+++ b/conf/app.src
@@ -0,0 +1,2 @@
+SOURCE_URL=https://github.com/jappix/jappix/archive/1.1.7.tar.gz
+SOURCE_SUM=515b8079b42f280da9b624d8f9825109
diff --git a/conf/nginx.conf b/conf/nginx.conf
index f18e7b7..d8528fd 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -19,7 +19,7 @@ location PATHTOCHANGE {
   include conf.d/yunohost_panel.conf.inc;
 }
 
-location PATHTOCHANGE2/http-bind {
+location PATHTOCHANGE/http-bind {
   if ($scheme = http) {
     rewrite ^ https://$server_name$request_uri? permanent;
   }
diff --git a/manifest.json b/manifest.json
index a92865b..1962914 100644
--- a/manifest.json
+++ b/manifest.json
@@ -8,7 +8,7 @@
   },
   "url": "https://jappix.org/",
   "license": "AGPL-3",
-  "version": "1.1.6",
+  "version": "1.1.7",
   "maintainer": {
     "name": "titoko",
     "email": "titoko@titoko.fr"
diff --git a/scripts/.fonctions b/scripts/.fonctions
new file mode 100644
index 0000000..6872e5f
--- /dev/null
+++ b/scripts/.fonctions
@@ -0,0 +1,95 @@
+#!/bin/bash
+
+#=================================================
+# CHECKING
+#=================================================
+
+CHECK_PATH () {	# Vérifie la présence du / en début de path. Et son absence à la fin.
+	if [ "${path:0:1}" != "/" ]; then    # Si le premier caractère n'est pas un /
+		path="/$path"    # Ajoute un / en début de path
+	fi
+	if [ "${path:${#path}-1}" == "/" ] && [ ${#path} -gt 1 ]; then    # Si le dernier caractère est un / et que ce n'est pas le seul caractère.
+		path="${path:0:${#path}-1}"	# Supprime le dernier caractère
+	fi
+}
+
+CHECK_DOMAINPATH () {	# Vérifie la disponibilité du path et du domaine.
+	sudo yunohost app checkurl $domain$path -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"
+}
+
+#=================================================
+# SETUP
+#=================================================
+
+SETUP_SOURCE () {	# Télécharge la source, décompresse et copie dans $final_path
+	src_url=$(cat ../conf/app.src | grep SOURCE_URL | cut -d= -f2)
+	src_checksum=$(cat ../conf/app.src | grep SOURCE_SUM | cut -d= -f2)
+	# Download sources from the upstream
+	wget -nv -O source.tar.gz $src_url
+	# Vérifie la somme de contrôle de la source téléchargée.
+	echo "$src_checksum source.tar.gz" | md5sum -c --status || ynh_die "Corrupt source"
+	# Extract source into the app dir
+	sudo mkdir -p $final_path
+	sudo tar -x -f source.tar.gz -C $final_path --strip-components 1
+	# Copie les fichiers additionnels ou modifiés.
+	if test -e "../sources/ajouts"; then
+		sudo cp -a ../sources/ajouts/. "$final_path"
+	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
+#=================================================
+
+# 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_check_error.
+# 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  $app's script has encountered an error. Its execution was cancelled.\n!!" >&2
+
+	if type -t ynh_clean_setup > /dev/null; then	# Check if the function exist in the app script.
+		ynh_clean_setup	# Call the function to do specific cleaning for the app.
+	fi
+
+	ynh_die	# Exit with error status
+}
+
+# Exit if an error occurs during the execution of the script.
+#
+# Stop immediatly the execution if an error occured or if a empty variable is used.
+# The execution of the script is derivate to ynh_exit_properly function before exit.
+#
+# Usage: ynh_check_error
+ynh_check_error () {
+	set -eu	# Exit if a command fail, and if a variable is used unset.
+	trap ynh_exit_properly EXIT	# Capturing exit signals on shell script
+}
diff --git a/scripts/_common.sh b/scripts/_common.sh
deleted file mode 100644
index cfc17c4..0000000
--- a/scripts/_common.sh
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/bin/bash
-
-VERSION="1.1.6"
-
-JAPPIX_SOURCE_URL="https://github.com/jappix/jappix/archive/${VERSION}.tar.gz"
diff --git a/scripts/backup b/scripts/backup
index 4b7a6c6..f7d0cda 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -1,15 +1,15 @@
 #!/bin/bash
 
 # causes the shell to exit if any subcommand or pipeline returns a non-zero status
-set -e
+set -eu
 
 # Source YNH helpers
-. /usr/share/yunohost/helpers
+source /usr/share/yunohost/helpers
 
-app="jappix"
+app=$YNH_APP_INSTANCE_NAME
 
 # Retrieve app settings
-domain=$(sudo yunohost app setting "$app" domain)
+domain=$(ynh_app_setting_get $app domain)
 
 # Save sources & data
 ynh_backup "/var/www/${app}" "sources"
diff --git a/scripts/install b/scripts/install
index 953fb34..a85cd5f 100644
--- a/scripts/install
+++ b/scripts/install
@@ -1,55 +1,88 @@
 #!/bin/bash
 
-set -e
+#=================================================
+# GENERIC STARTING
+#=================================================
+# IMPORT GENERIC HELPERS
+#=================================================
 
-source ./_common.sh
+source .fonctions
+source /usr/share/yunohost/helpers
 
-app="jappix"
+#=================================================
+# MANAGE FAILURE OF THE SCRIPT
+#=================================================
 
-# Retrieve arguments
-domain=$1
-path=${2%/}
-name=$3
-language=$4
+ynh_check_error	# Active trap pour arrêter le script si une erreur est détectée.
 
+#=================================================
+# RETRIEVE ARGUMENTS FROM THE MANIFEST
+#=================================================
+
+domain=$YNH_APP_ARG_DOMAIN
+path=$YNH_APP_ARG_PATH
+name=$YNH_APP_ARG_NAME
+language=$YNH_APP_ARG_LANGUAGE
+
+
+app=$YNH_APP_INSTANCE_NAME
+#=================================================
 # Check domain/path availability
-sudo yunohost app checkurl "${domain}${path}" -a "$app" \
-  || exit 1
+#=================================================
 
-# Retrieve sources
-wget -q -O jappix.tar.gz "$JAPPIX_SOURCE_URL"
+CHECK_PATH	# Vérifie et corrige la syntaxe du path.
+CHECK_DOMAINPATH
+CHECK_FINALPATH	# Vérifie que le dossier de destination n'est pas déjà utilisé.
 
+#=================================================
+# STORE SETTINGS FROM MANIFEST
+#=================================================
+
+ynh_app_setting_set $app name $name
+ynh_app_setting_set $app language $language
+ynh_app_setting_set $app domain $domain
+ynh_app_setting_set $app final_path $final_path
+
+#=================================================
 # Copy files to the right place
-final_path="/var/www/${app}"
+#=================================================
+
+SETUP_SOURCE	# Télécharge la source, décompresse et copie dans $final_path
+
 sudo mkdir -p "${final_path}/store/conf"
-sudo tar -C "$final_path" -xf jappix.tar.gz --strip-components 1
 sudo cp ../conf/*.xml "${final_path}/store/conf/"
 
+#=================================================
 # Set permissions to jappix directory
+#=================================================
+
 sudo chown -R www-data: "$final_path"
 
+#=================================================
 # Set and copy NGINX configuraion
-sudo sed -i "s@PATHTOCHANGE2@${path}@g" ../conf/nginx.conf
-path=${path:-/}
+#=================================================
+
 sudo sed -i "s@PATHTOCHANGE@${path}@g" ../conf/nginx.conf
 sudo sed -i "s@ALIASTOCHANGE@${final_path}/@g" ../conf/nginx.conf
 sudo cp ../conf/nginx.conf "/etc/nginx/conf.d/${domain}.d/${app}.conf"
 
+#=================================================
 # Validate language
-[[ -a "${final_path}/i18n/${language}" ]] \
+#=================================================
+
+[[ -e "${final_path}/i18n/${language}" ]] \
   || language="en"
 
-# Store app settings
-sudo yunohost app setting "$app" name -v "$name"
-sudo yunohost app setting "$app" language -v "$language"
-
+#=================================================
 # Set Jappix configuration
-sudo sed -i "s@PATHTOCHANGE@${path}@g" "${final_path}/store/conf/main.xml"
+#=================================================
+
 sudo sed -i "s@PATHTOCHANGE@${path}@g" "${final_path}/store/conf/hosts.xml"
-sudo sed -i "s@DOMAINTOCHANGE@${domain}@g" "${final_path}/store/conf/main.xml"
 sudo sed -i "s@CHANGELANG@${language}@g" "${final_path}/store/conf/main.xml"
 sudo sed -i "s@CHANGENAME@${name}@g" "${final_path}/store/conf/main.xml"
 sudo sed -i "s@DOMAINTOCHANGE@${domain}@g" "${final_path}/store/conf/hosts.xml"
-
+#=================================================
 # Reload services
+#=================================================
+
 sudo service nginx reload
diff --git a/scripts/remove b/scripts/remove
index 893a4b0..da603b9 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -1,9 +1,12 @@
 #!/bin/bash
 
-app="jappix"
+set -u
+source /usr/share/yunohost/helpers
+
+app=$YNH_APP_INSTANCE_NAME
 
 # Retrieve arguments
-domain=$(sudo yunohost app setting "$app" domain)
+domain=$(ynh_app_setting_get "$app" domain)
 
 # Remove sources and configuration
 sudo rm -rf "/var/www/${app}"
diff --git a/scripts/restore b/scripts/restore
index 66fa81c..bffce4b 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -1,12 +1,13 @@
 #!/bin/bash
 
 # causes the shell to exit if any subcommand or pipeline returns a non-zero status
-set -e
-
-app="jappix"
+set -eu
+source /usr/share/yunohost/helpers
 
 # Retrieve old app settings
-domain=$(sudo yunohost app setting "$app" domain)
+app=$YNH_APP_INSTANCE_NAME
+domain=$(ynh_app_setting_get $app domain)
+
 
 # Restore sources & data
 sudo cp -a ./sources "/var/www/${app}"
diff --git a/scripts/upgrade b/scripts/upgrade
index 245ffe8..4e4e187 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -1,47 +1,44 @@
 #!/bin/bash
 
-set -e
+set -eu
+source .fonctions
+source /usr/share/yunohost/helpers
 
-source ./_common.sh
+app=$YNH_APP_INSTANCE_NAME
 
-app="jappix"
-
-# Retrieve arguments
-domain=$(sudo yunohost app setting "$app" domain)
-path=$(sudo yunohost app setting "$app" path)
-name=$(sudo yunohost app setting "$app" name)
-language=$(sudo yunohost app setting "$app" language)
+# Récupère les infos de l'application.
+domain=$(ynh_app_setting_get $app domain)
+path=$(ynh_app_setting_get $app path)
+name=$(ynh_app_setting_get "$app" name)
+language=$(ynh_app_setting_get "$app" language)
 
 # Set default values
 name="${name:-YunoJappix}"
 language="${language:-en}"
 
 # Remove trailing "/" for next commands
-path=${path%/}
-
-# Retrieve sources
-wget -q -O jappix.tar.gz "$JAPPIX_SOURCE_URL"
+CHECK_PATH
 
+#=================================================
 # Copy files to the right place
+#=================================================
+
 final_path="/var/www/${app}"
+ynh_app_setting_set $app final_path $final_path
+SETUP_SOURCE	# Télécharge la source, décompresse et copie dans $final_path
 sudo mkdir -p "${final_path}/store/conf"
-sudo tar -C "$final_path" -xf jappix.tar.gz --strip-components 1
 sudo cp ../conf/*.xml "${final_path}/store/conf/"
 
 # Set permissions to jappix directory
 sudo chown -R www-data: "$final_path"
 
 # Set and copy NGINX configuraion
-sudo sed -i "s@PATHTOCHANGE2@${path}@g" ../conf/nginx.conf
-path=${path:-/}
 sudo sed -i "s@PATHTOCHANGE@${path}@g" ../conf/nginx.conf
 sudo sed -i "s@ALIASTOCHANGE@${final_path}/@g" ../conf/nginx.conf
 sudo cp ../conf/nginx.conf "/etc/nginx/conf.d/${domain}.d/${app}.conf"
 
 # Set Jappix configuration
-sudo sed -i "s@PATHTOCHANGE@${path}@g" "${final_path}/store/conf/main.xml"
 sudo sed -i "s@PATHTOCHANGE@${path}@g" "${final_path}/store/conf/hosts.xml"
-sudo sed -i "s@DOMAINTOCHANGE@${domain}@g" "${final_path}/store/conf/main.xml"
 sudo sed -i "s@CHANGELANG@${language}@g" "${final_path}/store/conf/main.xml"
 sudo sed -i "s@CHANGENAME@${name}@g" "${final_path}/store/conf/main.xml"
 sudo sed -i "s@DOMAINTOCHANGE@${domain}@g" "${final_path}/store/conf/hosts.xml"