#!/bin/bash
# =============================================================================
# YUNOHOST 2.6 FORTHCOMING HELPERS
# (will be part of YunoHost 2.6, so won't be necessary any more after
# YunoHost 2.6 gets widespread)
# =============================================================================
# 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
}
# Check if a mysql user exists
#
# usage: ynh_mysql_user_exists user
# | arg: user - the user for which to check existence
function ynh_mysql_user_exists( )
{
local user = $1
if [ [ -z $( ynh_mysql_execute_as_root " SELECT User from mysql.user WHERE User = ' $user '; " ) ] ]
then
return 1
else
return 0
fi
}
# Create a database, an user and its password. Then store the password in the app's config
#
# After executing this helper, the password of the created database will be available in $db_pwd
# It will also be stored as "mysqlpwd" into the app settings.
#
# usage: ynh_mysql_setup_db user name [pwd]
# | arg: user - Owner of the database
# | arg: name - Name of the database
# | arg: pwd - Password of the database. If not given, a password will be generated
ynh_mysql_setup_db ( ) {
local db_user = " $1 "
local db_name = " $2 "
db_pwd = $( ynh_string_random) # Generate a random password
ynh_mysql_create_db " $db_name " " $db_user " " $db_pwd " # Create the database
ynh_app_setting_set $app mysqlpwd $db_pwd # Store the password in the app's config
}
# Remove a database if it exists, and the associated user
#
# usage: ynh_mysql_remove_db user name
# | arg: user - Owner of the database
# | arg: name - Name of the database
ynh_mysql_remove_db ( ) {
local db_user = " $1 "
local db_name = " $2 "
local mysql_root_password = $( sudo cat $MYSQL_ROOT_PWD_FILE )
if mysqlshow -u root -p$mysql_root_password | grep -q " ^| $db_name " ; then # Check if the database exists
echo " Removing database $db_name " >& 2
ynh_mysql_drop_db $db_name # Remove the database
else
echo " Database $db_name not found " >& 2
fi
# Remove mysql user if it exists
if $( ynh_mysql_user_exists $db_user ) ; then
ynh_mysql_drop_user $db_user
fi
}
# Correct the name given in argument for mariadb
#
# Avoid invalid name for your database
#
# Exemple: dbname=$(ynh_make_valid_dbid $app)
#
# usage: ynh_make_valid_dbid name
# | arg: name - name to correct
# | ret: the corrected name
ynh_sanitize_dbid ( ) {
dbid = ${ 1 //[-.]/_ } # We should avoid having - and . in the name of databases. They are replaced by _
echo $dbid
}
# 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
}
# Define and install dependencies with a equivs control file
# This helper can/should only be called once per app
#
# usage: ynh_install_app_dependencies dep [dep [...]]
# | arg: dep - the package name to install in dependence
ynh_install_app_dependencies ( ) {
dependencies = $@
manifest_path = "../manifest.json"
if [ ! -e " $manifest_path " ] ; then
manifest_path = "../settings/manifest.json" # Into the restore script, the manifest is not at the same place
fi
version = $( sudo grep '\"version\": ' " $manifest_path " | cut -d '"' -f 4) # Retrieve the version number in the manifest file.
dep_app = ${ app //_/- } # Replace all '_' by '-'
if ynh_package_is_installed " ${ dep_app } -ynh-deps " ; then
echo " A package named ${ dep_app } -ynh-deps is already installed " >& 2
else
cat > ./${ dep_app } -ynh-deps.control << EOF # Make a control file for equivs-build
Section: misc
Priority: optional
Package: ${ dep_app } -ynh-deps
Version: ${ version }
Depends: ${ dependencies // /, }
Architecture: all
Description: Fake package for ${ app } ( YunoHost app) dependencies
This meta-package is only responsible of installing its dependencies.
EOF
ynh_package_install_from_equivs ./${ dep_app } -ynh-deps.control \
|| ynh_die "Unable to install dependencies" # Install the fake package and its dependencies
ynh_app_setting_set $app apt_dependencies $dependencies
fi
}
# Remove fake package and its dependencies
#
# Dependencies will removed only if no other package need them.
#
# usage: ynh_remove_app_dependencies
ynh_remove_app_dependencies ( ) {
dep_app = ${ app //_/- } # Replace all '_' by '-'
ynh_package_autoremove ${ dep_app } -ynh-deps # Remove the fake package and its dependencies if they not still used.
}
# Use logrotate to manage the logfile
#
# usage: ynh_use_logrotate [logfile]
# | arg: logfile - absolute path of logfile
#
# If no argument provided, a standard directory will be use. /var/log/${app}
# You can provide a path with the directory only or with the logfile.
# /parentdir/logdir/
# /parentdir/logdir/logfile.log
#
# It's possible to use this helper several times, each config will added to same logrotate config file.
ynh_use_logrotate ( ) {
if [ " $# " -gt 0 ] ; then
if [ " $( echo ${ 1 ##*. } ) " = = "log" ] ; then # Keep only the extension to check if it's a logfile
logfile = $1 # In this case, focus logrotate on the logfile
else
logfile = $1 /.log # Else, uses the directory and all logfile into it.
fi
else
logfile = " /var/log/ ${ app } /.log " # Without argument, use a defaut directory in /var/log
fi
cat > ./${ app } -logrotate << EOF # Build a config file for logrotate
$logfile {
# Rotate if the logfile exceeds 100Mo
size 100M
# Keep 12 old log maximum
rotate 12
# Compress the logs with gzip
compress
# Compress the log at the next cycle. So keep always 2 non compressed logs
delaycompress
# Copy and truncate the log to allow to continue write on it. Instead of move the log.
copytruncate
# Do not do an error if the log is missing
missingok
# Not rotate if the log is empty
notifempty
# Keep old logs in the same dir
noolddir
}
EOF
sudo mkdir -p $( dirname " $logfile " ) # Create the log directory, if not exist
cat ${ app } -logrotate | sudo tee -a /etc/logrotate.d/$app > /dev/null # Append this config to the others for this app. If a config file already exist
}
# Remove the app's logrotate config.
#
# usage: ynh_remove_logrotate
ynh_remove_logrotate ( ) {
if [ -e " /etc/logrotate.d/ $app " ] ; then
sudo rm " /etc/logrotate.d/ $app "
fi
}
# Find a free port and return it
#
# example: port=$(ynh_find_port 8080)
#
# usage: ynh_find_port begin_port
# | arg: begin_port - port to start to search
ynh_find_port ( ) {
port = $1
test -n " $port " || ynh_die "The argument of ynh_find_port must be a valid port."
while netcat -z 127.0.0.1 $port # Check if the port is free
do
port = $(( port+1)) # Else, pass to next port
done
echo $port
}
# 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
}
# Curl abstraction to help with POST requests to local pages (such as installation forms)
#
# $domain and $path_url should be defined externally (and correspond to the domain.tld and the /path (of the app?))
#
# example: ynh_local_curl "/install.php?installButton" "foo=$var1" "bar=$var2"
#
# usage: ynh_local_curl "page_uri" "key1=value1" "key2=value2" ...
# | arg: page_uri - Path (relative to $path_url) of the page where POST data will be sent
# | arg: key1=value1 - (Optionnal) POST key and corresponding value
# | arg: key2=value2 - (Optionnal) Another POST key and corresponding value
# | arg: ... - (Optionnal) More POST keys and values
ynh_local_curl ( ) {
# Define url of page to curl
full_page_url = https://localhost$path_url $1
# Concatenate all other arguments with '&' to prepare POST data
POST_data = ""
for arg in " ${ @ : 2 } "
do
POST_data = " ${ POST_data } ${ arg } & "
done
if [ -n " $POST_data " ]
then
# Add --data arg and remove the last character, which is an unecessary '&'
POST_data = " --data \" ${ POST_data : :- 1 } \" "
fi
# Curl the URL
curl --silent --show-error -kL -H " Host: $domain " --resolve $domain :443:127.0.0.1 $POST_data " $full_page_url "
}
# 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=' " ../conf/ ${ src_id } .src " | cut -d= -f2-)
local src_sum = $( grep 'SOURCE_SUM=' " ../conf/ ${ src_id } .src " | cut -d= -f2-)
local src_sumprg = $( grep 'SOURCE_SUM_PRG=' " ../conf/ ${ src_id } .src " | cut -d= -f2-)
local src_format = $( grep 'SOURCE_FORMAT=' " ../conf/ ${ src_id } .src " | cut -d= -f2-)
local src_in_subdir = $( grep 'SOURCE_IN_SUBDIR=' " ../conf/ ${ src_id } .src " | cut -d= -f2-)
local src_filename = $( grep 'SOURCE_FILENAME=' " ../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
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)
sudo 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 ../sources/patches/ -type f -name " ${ src_id } -*.patch " 2> /dev/null | wc -l) > "0" ) ) ; then
local old_dir = $( pwd )
( cd " $dest_dir " \
&& for p in ../sources/patches/${ src_id } -*.patch; do \
sudo patch -p1 < $p ; done ) \
|| ynh_die "Unable to apply patches"
cd $old_dir
fi
# Add supplementary files
if test -e " ../sources/extra_files/ ${ src_id } " ; then
sudo cp -a ../sources/extra_files/$src_id /. " $dest_dir "
fi
}
# Check availability of a web path
#
# example: ynh_webpath_available some.domain.tld /coffee
#
# usage: ynh_webpath_available domain path
# | arg: domain - the domain/host of the url
# | arg: path - the web path to check the availability of
ynh_webpath_available ( ) {
local domain = $1
local path = $2
sudo yunohost domain url-available $domain $path
}
# Register/book a web path for an app
#
# example: ynh_webpath_register wordpress some.domain.tld /coffee
#
# usage: ynh_webpath_register app domain path
# | arg: app - the app for which the domain should be registered
# | arg: domain - the domain/host of the web path
# | arg: path - the web path to be registered
ynh_webpath_register ( ) {
local app = $1
local domain = $2
local path = $3
sudo yunohost app register-url $app $domain $path
}
# Calculate and store a file checksum into the app settings
#
# $app should be defined when calling this helper
#
# usage: ynh_store_file_checksum file
# | arg: file - The file on which the checksum will performed, then stored.
ynh_store_file_checksum ( ) {
local checksum_setting_name = checksum_${ 1 //[ \/ ]/_ } # Replace all '/' and ' ' by '_'
ynh_app_setting_set $app $checksum_setting_name $( sudo md5sum " $1 " | cut -d' ' -f1)
}
# 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
# | arg: file - The file on which the checksum test will be perfomed.
#
# | ret: Return the name a the backup file, or nothing
ynh_backup_if_checksum_is_different ( ) {
local file = $1
local checksum_setting_name = checksum_${ 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 = " /home/yunohost.conf/backup/ $file .backup. $( date '+%Y%m%d.%H%M%S' ) "
sudo mkdir -p " $( dirname " $backup_file " ) "
sudo cp -a " $file " " $backup_file " # Backup the current file
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
}
#####################################
# This is not an official helper, just an abstract helper to prepare to the new one.
ynh_restore_file ( ) {
sudo cp -a " ${ backup_dir } $1 " " $1 "
}
# =============================================================================
# YUNOHOST 2.6 FORTHCOMING HELPERS
# (will be part of YunoHost 2.6, so won't be necessary any more after
# YunoHost 2.6 gets widespread)
# =============================================================================
# Create a dedicated nginx config
#
# usage: ynh_add_nginx_config
ynh_add_nginx_config ( ) {
finalnginxconf = " /etc/nginx/conf.d/ $domain .d/ $app .conf "
ynh_backup_if_checksum_is_different " $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
}
# Remove the dedicated nginx config
#
# usage: ynh_remove_nginx_config
ynh_remove_nginx_config ( ) {
ynh_secure_remove " /etc/nginx/conf.d/ $domain .d/ $app .conf "
sudo systemctl reload nginx
}
# Create a dedicated php-fpm config
#
# usage: ynh_add_fpm_config
ynh_add_fpm_config ( ) {
finalphpconf = " /etc/php5/fpm/pool.d/ $app .conf "
ynh_backup_if_checksum_is_different " $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_file_checksum " $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
}
# Remove the dedicated php-fpm config
#
# usage: ynh_remove_fpm_config
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 " 2>& 1
sudo systemctl reload php5-fpm
}
# Create a dedicated systemd config
#
# usage: ynh_add_systemd_config
ynh_add_systemd_config ( ) {
finalsystemdconf = " /etc/systemd/system/ $app .service "
ynh_compare_checksum_config " $finalsystemdconf " 1
sudo cp ../conf/systemd.service " $finalsystemdconf "
# 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 " ${ final_path :- } " ; then
ynh_replace_string "__FINALPATH__" " $final_path " " $finalsystemdconf "
fi
if test -n " ${ app :- } " ; then
ynh_replace_string "__APP__" " $app " " $finalsystemdconf "
fi
ynh_store_checksum_config " $finalsystemdconf "
sudo chown root: " $finalsystemdconf "
sudo systemctl enable $app
sudo systemctl daemon-reload
}
# Remove the dedicated systemd config
#
# usage: ynh_remove_systemd_config
ynh_remove_systemd_config ( ) {
finalsystemdconf = " /etc/systemd/system/ $app .service "
if [ -e " $finalsystemdconf " ] ; then
sudo systemctl stop $app
sudo systemctl disable $app
ynh_secure_remove " $finalsystemdconf "
fi
}
