diff --git a/scripts/_common.sh b/scripts/_common.sh index 763ede3..d4d6af2 100644 --- a/scripts/_common.sh +++ b/scripts/_common.sh @@ -2,553 +2,6 @@ # ============================================================================= # 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