mirror of
https://github.com/YunoHost-Apps/discourse_ynh.git
synced 2024-09-03 18:26:18 +02:00
622 lines
20 KiB
Bash
622 lines
20 KiB
Bash
#!/bin/bash
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#
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# Common variables
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#
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pkg_dependencies="zlib1g-dev libreadline-dev libpq-dev libssl-dev libyaml-dev libcurl4-openssl-dev libapr1-dev libxslt1-dev checkinstall libxml2-dev vim imagemagick postgresql postgresql-server-dev-all postgresql-contrib optipng jhead jpegoptim gifsicle"
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RUBY_VERSION="2.4.4"
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# Execute a command as another user with login
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# (hence in user home dir, with prior loading of .profile, etc.)
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# usage: exec_login_as USER COMMAND [ARG ...]
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exec_login_as() {
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local user=$1
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shift 1
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exec_as $user --login "$@"
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}
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# Execute a command as another user
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# usage: exec_as USER COMMAND [ARG ...]
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exec_as() {
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local user=$1
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shift 1
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if [[ $user = $(whoami) ]]; then
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eval "$@"
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else
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sudo -u "$user" "$@"
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fi
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}
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# Returns true if a swap partition is enabled, false otherwise
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# usage: is_swap_present
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is_swap_present() {
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[ $(awk '/^SwapTotal:/{print $2}' /proc/meminfo) -gt 0 ]
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}
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# Returns true if swappiness higher than 50
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# usage: is_swappiness_sufficient
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is_swappiness_sufficient() {
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[ $(cat /proc/sys/vm/swappiness) -gt 50 ]
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}
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# Returns true if specified free memory is available (RAM + swap)
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# usage: is_memory_available MEMORY (in bytes)
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is_memory_available() {
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local needed_memory=$1
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local freemem="$(awk '/^MemAvailable:/{print $2}' /proc/meminfo)"
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local freeswap="$(awk '/^SwapFree:/{print $2}' /proc/meminfo)"
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[ $(($freemem+$freeswap)) -gt $needed_memory ]
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}
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# Checks discourse install memory requirements
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# terminates installation if requirements not met
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check_memory_requirements() {
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if ! is_swap_present ; then
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ynh_die "You must have a swap partition in order to install and use this application"
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elif ! is_swappiness_sufficient ; then
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ynh_die "Your swappiness must be higher than 50; please see https://en.wikipedia.org/wiki/Swappiness"
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elif ! is_memory_available 1000000 ; then
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ynh_die "You must have a minimum of 1Gb available memory (RAM+swap) for the installation"
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fi
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}
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# Checks discourse upgrade memory requirements
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# Less requirements as the software is already installed and running
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# terminates upgrade if requirements not met
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check_memory_requirements_upgrade() {
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if ! is_memory_available 400000 ; then
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ynh_die "You must have a minimum of 400Mb available memory (RAM+swap) for the upgrade"
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fi
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}
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#=================================================
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# POSTGRES HELPERS
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#=================================================
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# Create a master password and set up global settings
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# Please always call this script in install and restore scripts
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#
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# usage: ynh_psql_test_if_first_run
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ynh_psql_test_if_first_run() {
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if [ -f /etc/yunohost/psql ];
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then
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echo "PostgreSQL is already installed, no need to create master password"
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else
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pgsql=$(ynh_string_random)
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pg_hba=""
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echo "$pgsql" >> /etc/yunohost/psql
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if [ -e /etc/postgresql/9.4/ ]
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then
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pg_hba=/etc/postgresql/9.4/main/pg_hba.conf
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elif [ -e /etc/postgresql/9.6/ ]
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then
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pg_hba=/etc/postgresql/9.6/main/pg_hba.conf
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else
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ynh_die "postgresql shoud be 9.4 or 9.6"
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fi
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systemctl start postgresql
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sudo --login --user=postgres psql -c"ALTER user postgres WITH PASSWORD '$pgsql'" postgres
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# force all user to connect to local database using passwords
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# https://www.postgresql.org/docs/current/static/auth-pg-hba-conf.html#EXAMPLE-PG-HBA.CONF
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# Note: we can't use peer since YunoHost create users with nologin
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# See: https://github.com/YunoHost/yunohost/blob/unstable/data/helpers.d/user
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sed -i '/local\s*all\s*all\s*peer/i \
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local all all password' "$pg_hba"
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systemctl enable postgresql
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systemctl reload postgresql
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fi
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}
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# Open a connection as a user
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#
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# example: ynh_psql_connect_as 'user' 'pass' <<< "UPDATE ...;"
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# example: ynh_psql_connect_as 'user' 'pass' < /path/to/file.sql
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#
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# usage: ynh_psql_connect_as user pwd [db]
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# | arg: user - the user name to connect as
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# | arg: pwd - the user password
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# | arg: db - the database to connect to
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ynh_psql_connect_as() {
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user="$1"
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pwd="$2"
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db="$3"
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sudo --login --user=postgres PGUSER="$user" PGPASSWORD="$pwd" psql "$db"
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}
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# # Execute a command as root user
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#
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# usage: ynh_psql_execute_as_root sql [db]
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# | arg: sql - the SQL command to execute
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# | arg: db - the database to connect to
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ynh_psql_execute_as_root () {
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sql="$1"
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sudo --login --user=postgres psql <<< "$sql"
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}
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# Execute a command from a file as root user
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#
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# usage: ynh_psql_execute_file_as_root file [db]
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# | arg: file - the file containing SQL commands
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# | arg: db - the database to connect to
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ynh_psql_execute_file_as_root() {
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file="$1"
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db="$2"
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sudo --login --user=postgres psql "$db" < "$file"
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}
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# Create a database, an user and its password. Then store the password in the app's config
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#
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# After executing this helper, the password of the created database will be available in $db_pwd
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# It will also be stored as "psqlpwd" into the app settings.
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#
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# usage: ynh_psql_setup_db user name [pwd]
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# | arg: user - Owner of the database
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# | arg: name - Name of the database
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# | arg: pwd - Password of the database. If not given, a password will be generated
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ynh_psql_setup_db () {
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db_user="$1"
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app="$1"
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db_name="$2"
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new_db_pwd=$(ynh_string_random) # Generate a random password
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# If $3 is not given, use new_db_pwd instead for db_pwd.
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db_pwd="${3:-$new_db_pwd}"
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ynh_psql_create_db "$db_name" "$db_user" "$db_pwd" # Create the database
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ynh_app_setting_set "$app" psqlpwd "$db_pwd" # Store the password in the app's config
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}
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# Create a database and grant privilegies to a user
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#
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# usage: ynh_psql_create_db db [user [pwd]]
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# | arg: db - the database name to create
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# | arg: user - the user to grant privilegies
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# | arg: pwd - the user password
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ynh_psql_create_db() {
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db="$1"
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user="$2"
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pwd="$3"
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ynh_psql_create_user "$user" "$pwd"
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sudo --login --user=postgres createdb --owner="$user" "$db"
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}
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# Drop a database
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#
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# usage: ynh_psql_drop_db db
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# | arg: db - the database name to drop
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# | arg: user - the user to drop
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ynh_psql_remove_db() {
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db="$1"
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user="$2"
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sudo --login --user=postgres dropdb "$db"
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ynh_psql_drop_user "$user"
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}
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# Dump a database
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#
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# example: ynh_psql_dump_db 'roundcube' > ./dump.sql
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#
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# usage: ynh_psql_dump_db db
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# | arg: db - the database name to dump
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# | ret: the psqldump output
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ynh_psql_dump_db() {
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db="$1"
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sudo --login --user=postgres pg_dump "$db"
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}
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# Create a user
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#
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# usage: ynh_psql_create_user user pwd [host]
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# | arg: user - the user name to create
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ynh_psql_create_user() {
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user="$1"
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pwd="$2"
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sudo --login --user=postgres psql -c"CREATE USER $user WITH PASSWORD '$pwd'" postgres
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}
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# Drop a user
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#
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# usage: ynh_psql_drop_user user
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# | arg: user - the user name to drop
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ynh_psql_drop_user() {
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user="$1"
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sudo --login --user=postgres dropuser "$user"
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}
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# ============= MODIFIED EXISTING YUNOHOST HELPERS =============
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# Create a dedicated systemd config
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#
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# usage: ynh_add_systemd_config [service] [template]
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# | arg: service - Service name (optionnal, $app by default)
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# | arg: template - Name of template file (optionnal, this is 'systemd' by default, meaning ./conf/systemd.service will be used as template)
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#
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# This will use the template ../conf/<templatename>.service
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# to generate a systemd config, by replacing the following keywords
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# with global variables that should be defined before calling
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# this helper :
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#
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# __APP__ by $app
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# __FINALPATH__ by $final_path
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#
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ynh_add_systemd_config () {
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local service_name="${1:-$app}"
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finalsystemdconf="/etc/systemd/system/$service_name.service"
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ynh_backup_if_checksum_is_different "$finalsystemdconf"
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sudo cp ../conf/${2:-systemd.service} "$finalsystemdconf"
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# To avoid a break by set -u, use a void substitution ${var:-}. If the variable is not set, it's simply set with an empty variable.
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# Substitute in a nginx config file only if the variable is not empty
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if test -n "${final_path:-}"; then
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ynh_replace_string "__FINALPATH__" "$final_path" "$finalsystemdconf"
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fi
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if test -n "${app:-}"; then
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ynh_replace_string "__APP__" "$app" "$finalsystemdconf"
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fi
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ynh_store_file_checksum "$finalsystemdconf"
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sudo chown root: "$finalsystemdconf"
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sudo systemctl enable $service_name
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sudo systemctl daemon-reload
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}
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# Remove the dedicated systemd config
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#
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# usage: ynh_remove_systemd_config [service]
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# | arg: service - Service name (optionnal, $app by default)
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#
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ynh_remove_systemd_config () {
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local service_name="${1:-$app}"
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local finalsystemdconf="/etc/systemd/system/$service_name.service"
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if [ -e "$finalsystemdconf" ]; then
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sudo systemctl stop $service_name
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sudo systemctl disable $service_name
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ynh_secure_remove "$finalsystemdconf"
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sudo systemctl daemon-reload
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fi
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}
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# Create a system user
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#
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# usage: ynh_system_user_create user_name [home_dir] [use_shell]
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# | arg: user_name - Name of the system user that will be create
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# | 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
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# | arg: use_shell - Create a user using the default shell if present. If this argument is omitted, the user will be created with /usr/sbin/nologin shell
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ynh_system_user_create () {
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if ! ynh_system_user_exists "$1" # Check if the user exists on the system
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then # If the user doesn't exist
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if [ $# -ge 2 ]; then # If a home dir is mentioned
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local user_home_dir="-d $2"
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else
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local user_home_dir="--no-create-home"
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fi
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if [ $# -ge 3 ]; then # If we want a shell for the user
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local shell="" # Use default shell
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else
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local shell="--shell /usr/sbin/nologin"
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fi
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useradd $user_home_dir --system --user-group $1 $shell || ynh_die "Unable to create $1 system account"
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fi
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}
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# ============= FUTURE YUNOHOST HELPERS =============
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# Create a dedicated fail2ban config (jail and filter conf files)
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#
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# usage: ynh_add_fail2ban_config log_file filter [max_retry [ports]]
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# | arg: log_file - Log file to be checked by fail2ban
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# | arg: failregex - Failregex to be looked for by fail2ban
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# | arg: max_retry - Maximum number of retries allowed before banning IP address - default: 3
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# | arg: ports - Ports blocked for a banned IP address - default: http,https
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ynh_add_fail2ban_config () {
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# Process parameters
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logpath=$1
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failregex=$2
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max_retry=${3:-3}
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ports=${4:-http,https}
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test -n "$logpath" || ynh_die "ynh_add_fail2ban_config expects a logfile path as first argument and received nothing."
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test -n "$failregex" || ynh_die "ynh_add_fail2ban_config expects a failure regex as second argument and received nothing."
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finalfail2banjailconf="/etc/fail2ban/jail.d/$app.conf"
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finalfail2banfilterconf="/etc/fail2ban/filter.d/$app.conf"
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ynh_backup_if_checksum_is_different "$finalfail2banjailconf" 1
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ynh_backup_if_checksum_is_different "$finalfail2banfilterconf" 1
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cat > $finalfail2banjailconf <<EOF
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[$app]
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enabled = true
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port = $ports
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filter = $app
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logpath = $logpath
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maxretry = $max_retry
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EOF
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cat > $finalfail2banfilterconf <<EOF
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[INCLUDES]
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before = common.conf
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[Definition]
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failregex = $failregex
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ignoreregex =
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EOF
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ynh_store_file_checksum "$finalfail2banjailconf"
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ynh_store_file_checksum "$finalfail2banfilterconf"
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systemctl restart fail2ban
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local fail2ban_error="$(journalctl -u fail2ban | tail -n50 | grep "WARNING.*$app.*")"
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if [ -n "$fail2ban_error" ]
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then
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echo "[ERR] Fail2ban failed to load the jail for $app" >&2
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echo "WARNING${fail2ban_error#*WARNING}" >&2
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fi
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}
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# Remove the dedicated fail2ban config (jail and filter conf files)
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#
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# usage: ynh_remove_fail2ban_config
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ynh_remove_fail2ban_config () {
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ynh_secure_remove "/etc/fail2ban/jail.d/$app.conf"
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ynh_secure_remove "/etc/fail2ban/filter.d/$app.conf"
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systemctl restart fail2ban
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}
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# Delete a file checksum from the app settings
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#
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# $app should be defined when calling this helper
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#
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# usage: ynh_remove_file_checksum file
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# | arg: file - The file for which the checksum will be deleted
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ynh_delete_file_checksum () {
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local checksum_setting_name=checksum_${1//[\/ ]/_} # Replace all '/' and ' ' by '_'
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ynh_app_setting_delete $app $checksum_setting_name
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}
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ynh_clean_check_starting_systemd () {
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# Stop the execution of tail.
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kill -s 15 $pid_tail 2>&1
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ynh_secure_remove "$templog" 2>&1
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}
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# Start or restart a service and follow its booting
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#
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# usage: ynh_check_starting_systemd "Line to match" [Service name] [Timeout]
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#
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# | arg: Line to match - The line to find in the log to attest the service have finished to boot.
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# | arg: Service name
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# | arg: Timeout - The maximum time to wait before ending the watching. Defaut 300 seconds.
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ynh_check_starting_systemd () {
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local line_to_match="$1"
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local service_name="${2:-$app}"
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local timeout=${3:-300}
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echo "Starting of $service_name" >&2
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systemctl stop $service_name
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local templog="$(mktemp)"
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# Follow the starting of the app in its log
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journalctl -u $service_name -f > "$templog" &
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# Get the PID of the tail command
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local pid_tail=$!
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systemctl start $service_name
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local i=0
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for i in `seq 1 $timeout`
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do
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# Read the log until the sentence is found, that means the app finished starting. Or run until the timeout
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if grep --quiet "$line_to_match" "$templog"
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then
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echo "The service $service_name has correctly started." >&2
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break
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fi
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echo -n "." >&2
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sleep 1
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done
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if [ $i -eq $timeout ]
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then
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echo "The service $service_name didn't fully started before the timeout." >&2
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fi
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echo ""
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ynh_clean_check_starting_systemd
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}
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rbenv_install_dir="/opt/rbenv"
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ruby_version_path="/opt/rbenv/versions"
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# RBENV_ROOT is the directory of rbenv, it needs to be loaded as a environment variable.
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export RBENV_ROOT="$rbenv_install_dir"
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# Install ruby version management
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#
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# [internal]
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#
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# usage: ynh_install_rbenv
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ynh_install_rbenv () {
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echo "Installation of rbenv - ruby version management" >&2
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# Build an app.src for rbenv
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mkdir -p "../conf"
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echo "SOURCE_URL=https://github.com/rbenv/rbenv/archive/v1.1.1.tar.gz
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SOURCE_SUM=41f1a60714c55eceb21d692a469aee1ec4f46bba351d0dfcb0c660ff9cf1a1c9" > "../conf/rbenv.src"
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# Download and extract rbenv
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ynh_setup_source "$rbenv_install_dir" rbenv
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# Build an app.src for ruby-build
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mkdir -p "../conf"
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echo "SOURCE_URL=https://github.com/rbenv/ruby-build/archive/v20180329.tar.gz
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SOURCE_SUM=4c8610c178ef2fa6bb29d4bcfca52608914632a51a56a5e70aeec8bf0894167b" > "../conf/ruby-build.src"
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# Download and extract ruby-build
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ynh_setup_source "$rbenv_install_dir/plugins/ruby-build" ruby-build
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(cd $rbenv_install_dir
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./src/configure && make -C src)
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# Create shims directory if needed
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if [ ! -d $rbenv_install_dir/shims ] ; then
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mkdir $rbenv_install_dir/shims
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fi
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}
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# Install a specific version of ruby
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#
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# ynh_install_ruby will install the version of ruby provided as argument by using rbenv.
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#
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# rbenv (ruby version management) stores the target ruby version in a .ruby_version file created in the target folder (using rbenv local <version>)
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# It then uses that information for every ruby user that uses rbenv provided ruby command
|
|
#
|
|
# This helper creates a /etc/profile.d/rbenv.sh that configures PATH environment for rbenv
|
|
# for every LOGIN user, hence your user must have a defined shell (as opposed to /usr/sbin/nologin)
|
|
#
|
|
# Don't forget to execute ruby-dependent command in a login environment
|
|
# (e.g. sudo --login option)
|
|
# When not possible (e.g. in systemd service definition), please use direct path
|
|
# to rbenv shims (e.g. $RBENV_ROOT/shims/bundle)
|
|
#
|
|
# usage: ynh_install_ruby ruby_version user
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|
# | arg: ruby_version - Version of ruby to install.
|
|
# If possible, prefer to use major version number (e.g. 8 instead of 8.10.0).
|
|
# The crontab will handle the update of minor versions when needed.
|
|
ynh_install_ruby () {
|
|
# Use rbenv, https://github.com/rbenv/rbenv to manage the ruby versions
|
|
local ruby_version="$1"
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|
|
|
# Create $rbenv_install_dir
|
|
mkdir -p "$rbenv_install_dir/plugins/ruby-build"
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|
|
|
# Load rbenv path in PATH
|
|
CLEAR_PATH="$rbenv_install_dir/bin:$PATH"
|
|
|
|
# Remove /usr/local/bin in PATH in case of ruby prior installation
|
|
PATH=$(echo $CLEAR_PATH | sed 's@/usr/local/bin:@@')
|
|
|
|
# Move an existing ruby binary, to avoid to block rbenv
|
|
test -x /usr/bin/ruby && mv /usr/bin/ruby /usr/bin/ruby_rbenv
|
|
|
|
# If rbenv is not previously setup, install it
|
|
if ! type rbenv > /dev/null 2>&1
|
|
then
|
|
ynh_install_rbenv
|
|
fi
|
|
|
|
# Restore /usr/local/bin in PATH (if needed)
|
|
PATH=$CLEAR_PATH
|
|
|
|
# And replace the old ruby binary
|
|
test -x /usr/bin/ruby_rbenv && mv /usr/bin/ruby_rbenv /usr/bin/ruby
|
|
|
|
# Install the requested version of ruby
|
|
CONFIGURE_OPTS="--disable-install-doc" MAKE_OPTS="-j2" rbenv install --skip-existing $ruby_version
|
|
|
|
# Store the ID of this app and the version of ruby requested for it
|
|
echo "$YNH_APP_ID:$ruby_version" | tee --append "$rbenv_install_dir/ynh_app_version"
|
|
|
|
# Store ruby_version into the config of this app
|
|
ynh_app_setting_set $app ruby_version $ruby_version
|
|
|
|
# Set environment for ruby users
|
|
echo "#rbenv
|
|
export RBENV_ROOT=$rbenv_install_dir
|
|
export PATH=\"$rbenv_install_dir/bin:$PATH\"
|
|
eval \"\$(rbenv init -)\"
|
|
#rbenv" > /etc/profile.d/rbenv.sh
|
|
|
|
# Load the right environment for the Installation
|
|
eval "$(rbenv init -)"
|
|
|
|
(cd $final_path
|
|
rbenv local $ruby_version)
|
|
}
|
|
|
|
# Remove the version of ruby used by the app.
|
|
#
|
|
# This helper will check if another app uses the same version of ruby,
|
|
# if not, this version of ruby will be removed.
|
|
# If no other app uses ruby, rbenv will be also removed.
|
|
#
|
|
# usage: ynh_remove_ruby
|
|
ynh_remove_ruby () {
|
|
ruby_version=$(ynh_app_setting_get $app ruby_version)
|
|
|
|
# Remove the line for this app
|
|
sed --in-place "/$YNH_APP_ID:$ruby_version/d" "$rbenv_install_dir/ynh_app_version"
|
|
|
|
# If no other app uses this version of ruby, remove it.
|
|
if ! grep --quiet "$ruby_version" "$rbenv_install_dir/ynh_app_version"
|
|
then
|
|
$rbenv_install_dir/bin/rbenv uninstall --force $ruby_version
|
|
fi
|
|
|
|
# Remove rbenv environment configuration
|
|
rm /etc/profile.d/rbenv.sh
|
|
|
|
# If no other app uses rbenv, remove rbenv and dedicated group
|
|
if [ ! -s "$rbenv_install_dir/ynh_app_version" ]
|
|
then
|
|
ynh_secure_remove "$rbenv_install_dir"
|
|
fi
|
|
}
|
|
|
|
# ============= EXPERIMENTAL HELPERS =============
|
|
|
|
# Returns true if upstream version is up to date
|
|
#
|
|
# This helper should be used to avoid an upgrade of the upstream version
|
|
# when it's not needed (but yet allowing to upgrade other part of the
|
|
# YunoHost application (e.g. nginx conf)
|
|
#
|
|
# usage: ynh_is_upstream_up_to_date
|
|
ynh_is_upstream_up_to_date () {
|
|
local version=$(ynh_read_manifest "/etc/yunohost/apps/$YNH_APP_INSTANCE_NAME/manifest.json" "version" || echo 1.0)
|
|
version="${version/~ynh*/}"
|
|
local last_version=$(ynh_read_manifest "../manifest.json" "version" || echo 1.0)
|
|
last_version="${last_version/~ynh*/}"
|
|
[ "$version" = "$last_version" ]
|
|
}
|
|
|
|
# Read the value of a key in a ynh manifest file
|
|
#
|
|
# usage: ynh_read_manifest manifest key
|
|
# | arg: manifest - Path of the manifest to read
|
|
# | arg: key - Name of the key to find
|
|
ynh_read_manifest () {
|
|
manifest="$1"
|
|
key="$2"
|
|
python3 -c "import sys, json;print(json.load(open('$manifest', encoding='utf-8'))['$key'])"
|
|
}
|
|
|
|
# Read the upstream version from the manifest
|
|
# The version number in the manifest is defined by <upstreamversion>~ynh<packageversion>
|
|
# For example : 4.3-2~ynh3
|
|
# This include the number before ~ynh
|
|
# In the last example it return 4.3-2
|
|
#
|
|
# usage: ynh_app_upstream_version
|
|
ynh_app_upstream_version () {
|
|
manifest_path="../manifest.json"
|
|
if [ ! -e "$manifest_path" ]; then
|
|
manifest_path="../settings/manifest.json" # Into the restore script, the manifest is not at the same place
|
|
fi
|
|
version_key=$(ynh_read_manifest "$manifest_path" "version")
|
|
echo "${version_key/~ynh*/}"
|
|
}
|
|
|
|
# Read package version from the manifest
|
|
# The version number in the manifest is defined by <upstreamversion>~ynh<packageversion>
|
|
# For example : 4.3-2~ynh3
|
|
# This include the number after ~ynh
|
|
# In the last example it return 3
|
|
#
|
|
# usage: ynh_app_package_version
|
|
ynh_app_package_version () {
|
|
manifest_path="../manifest.json"
|
|
if [ ! -e "$manifest_path" ]; then
|
|
manifest_path="../settings/manifest.json" # Into the restore script, the manifest is not at the same place
|
|
fi
|
|
version_key=$(ynh_read_manifest "$manifest_path" "version")
|
|
echo "${version_key/*~ynh/}"
|
|
}
|