forked from 0k/0k-charms
4 changed files with 638 additions and 0 deletions
@ -0,0 +1,5 @@ |
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FROM alpine:3.7 |
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RUN apk add --no-cache vsftpd |
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CMD /usr/sbin/vsftpd /etc/vsftpd/vsftpd.conf |
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@ -0,0 +1,300 @@ |
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#!/bin/bash |
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|
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## Init is run on host |
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## For now it is run every time the script is launched, but |
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## it should be launched only once after build. |
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|
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## Accessible variables are: |
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## - SERVICE_NAME Name of current service |
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## - DOCKER_BASE_IMAGE Base image from which this service might be built if any |
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## - SERVICE_DATASTORE Location on host of the DATASTORE of this service |
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## - SERVICE_CONFIGSTORE Location on host of the CONFIGSTORE of this service |
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. lib/common || exit 1 |
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CONFIGFILE="$SERVICE_CONFIGSTORE/etc/vsftpd/vsftpd.conf" |
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VSFTP_OPTIONS=( |
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## |
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## Feature not yet supported (and removed for simplicity's sake, and |
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## because implication were not though through yet), or in dire need |
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## of YAML simplification in the options. |
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## |
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|
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## No support for anon user for now (for simplification purpose) |
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#"allow_anon_ssl:bool" "anon_mkdir_write_enable:bool" "anon_other_write_enable:bool" |
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#"anon_upload_enable:bool" "anon_world_readable_only:bool" "anonymous_enable:bool" |
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#"force_anon_data_ssl:bool" "force_anon_logins_ssl:bool" |
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#"no_anon_password:bool" |
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#"anon_root:string" "chown_username:string" "ftp_username:string" |
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#"anon_max_rate:numeric" "anon_umask:numeric" |
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|
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## No support for chroot list |
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#"chroot_list_enable:bool" |
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#"connect_from_port_20:bool" ## port not propagated yet to host |
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|
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## No support for that (requires more YAML love to list emails) |
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#"secure_email_list_enable:bool" |
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#"user_config_dir:string" |
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|
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## To simplify usage |
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#"userlist_deny:bool" |
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#"userlist_enable:bool" |
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## |
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## Not sure if we need that |
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## |
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#"deny_email_enable:bool" |
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#"guest_enable:bool" "setproctitle_enable:bool" |
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#"session_support:bool" "tcp_wrappers:bool" |
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#"banned_email_file:string" "guest_username:string" |
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#"pam_service_name:string" "ftp_data_port:numeric" |
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## |
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## Set by design |
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## |
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|
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## Alway background by design (as a dockerized process) |
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# "background:bool" "listen:bool" |
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|
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## Using local user functionality |
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#"chroot_local_user:bool" |
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#"local_enable:bool" |
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#"passwd_chroot_enable:bool" |
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#"virtual_use_local_privs:bool" |
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#"chroot_list_file:string" |
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#"email_password_file:string" |
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#"user_sub_token:string" |
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#"userlist_file:string" |
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|
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## Logging options are simplified |
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#"dual_log_enable:bool" "log_ftp_protocol:bool" "no_log_lock:bool" |
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#"syslog_enable:bool" |
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#"xferlog_enable:bool" "xferlog_std_format:bool" |
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#"vsftpd_log_file:string" "xferlog_file:string" |
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|
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## Managed by ``ssl`` options |
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#"implicit_ssl:bool" |
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#"ssl_enable:bool" "ssl_request_cert:bool" "ssl_sslv2:bool" "ssl_sslv3:bool" |
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#"ssl_tlsv1:bool" |
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#"ca_certs_file:string" |
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#"dsa_cert_file:string" |
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#"dsa_private_key_file:string" |
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#"rsa_cert_file:string" |
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#"rsa_private_key_file:string" |
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#"ssl_ciphers:string" |
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## Obscure option not really needed |
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#"one_process_model:bool" |
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## Managed by ``pasv`` options |
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#"pasv_addr_resolve:bool" "pasv_enable:bool" |
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#"pasv_promiscuous:bool" |
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#"pasv_max_port:numeric" "pasv_min_port:numeric" |
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#"pasv_address:string" |
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## We use root user in docker to launch vsftp |
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#"run_as_launching_user:bool" |
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## We don't need to change this in docker |
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#"listen_port:numeric" |
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#"listen_address:string" "listen_address6:string" |
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## Hum, should not be of charm users concern |
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#"nopriv_user:string" |
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#"secure_chroot_dir:string" |
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## |
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## Permitted |
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## |
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|
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## commands |
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"chmod_enable:bool" "dirlist_enable:bool" "download_enable:bool" |
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"port_enable:bool" "ls_recurse_enable:bool" "write_enable:bool" |
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## others |
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"dirmessage_enable:bool" "ascii_download_enable:bool" |
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"ascii_upload_enable:bool" "async_abor_enable:bool" |
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"check_shell:bool" "chown_uploads:bool" "debug_ssl:bool" |
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"delete_failed_uploads:bool" "force_dot_files:bool" |
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"hide_ids:bool" "listen_ipv6:bool" "lock_upload_files:bool" |
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"mdtm_write:bool" "port_promiscuous:bool" "require_cert:bool" |
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"require_ssl_reuse:bool" "strict_ssl_read_eof:bool" |
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"strict_ssl_write_shutdown:bool" "text_userdb_names:bool" |
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"tilde_user_enable:bool" "use_localtime:bool" "use_sendfile:bool" |
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"validate_cert:bool" |
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|
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## timeouts |
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"accept_timeout:numeric" "connect_timeout:numeric" "data_connection_timeout:numeric" |
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"idle_session_timeout:numeric" |
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|
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## delays |
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"delay_failed_login:numeric" "delay_successful_login:numeric" |
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## modes |
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"chown_upload_mode:numeric" "file_open_mode:numeric" |
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"local_max_rate:numeric" "local_umask:numeric" |
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"max_clients:numeric" "max_login_fails:numeric" "max_per_ip:numeric" |
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"trans_chunk_size:numeric" |
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"banner_file:string" |
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"cmds_allowed:string" "cmds_denied:string" |
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"deny_file:string" "ftpd_banner:string" "hide_file:string" |
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"local_root:string" "message_file:string" |
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"force_local_data_ssl:bool" "force_local_logins_ssl:bool" |
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"allow_writeable_chroot:bool" |
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) |
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VSFTP_OPTIONS_CONCAT=" ${VSFTP_OPTIONS[*]} " |
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get_ips_from_hostname() { |
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local hostname="$1" |
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getent hosts "$hostname" | awk '{ print $1 }' |
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} |
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get_ip_from_hostname() { |
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local hostname="$1" |
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get_ips_from_hostname "$hostname" | head -n 1 |
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} |
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mkdir -p "$(dirname "$CONFIGFILE")" |
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service_def=$(get_compose_service_def "$SERVICE_NAME") || return 1 |
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domain= |
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users= |
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pasv= |
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ssl= |
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while read-0 key val; do |
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key_option=${key//-/_} |
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case "$VSFTP_OPTIONS_CONCAT" in |
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*" ${key_option}:bool "*) |
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case "${val,,}" in |
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true|ok|yes|y) |
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val=yes |
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;; |
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false|ko|nok|no|n) |
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val=no |
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;; |
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*) |
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die "Invalid value for ${WHITE}$key$NORMAL, please use a boolean value." |
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;; |
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esac |
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;; |
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*" ${key_option}:numeric "*) |
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if ! is_int "$val"; then |
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die "Invalid value for ${WHITE}$key$NORMAL, please use numeric value." |
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fi |
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;; |
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*" ${key_option}:string "*) |
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: |
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;; |
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*) |
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case "${key//_/-}" in |
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users) users="$val";; |
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pasv) pasv="$val";; |
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ssl) ssl="$val";; |
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domain) domain="$val";; |
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*) die "Unknown option ${WHITE}$key$NORMAL.";; |
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esac |
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continue |
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;; |
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esac |
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case "$key_option" in |
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allow_writeable_chroot) |
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allow_writeable_chroot=1 |
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;; |
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esac |
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printf "%s=%s\n" "$key_option" "$val" |
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done < <(printf "%s" "$service_def" | shyaml key-values-0 options) > "$CONFIGFILE" |
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if [ -z "$domain" ]; then |
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if [[ "$SERVICE_NAME" =~ ^([a-z0-9]+(-[a-z0-9]+)*\.)+[a-z]{2,}$ ]]; then |
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domain="$SERVICE_NAME" |
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fi |
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fi |
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make_pasv_options "$pasv" "$domain" >> "$CONFIGFILE" || exit 1 |
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make_ssl_options "$ssl" "$domain" >> "$CONFIGFILE" || exit 1 |
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## Logs |
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cat <<EOF >> "$CONFIGFILE" |
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## |
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## Logs |
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## |
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syslog_enable=no |
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dual_log_enable=no |
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vsftpd_log_file=/var/log/vsftp/vsftp.log |
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xferlog_enable=yes |
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xferlog_std_format=no |
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EOF |
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## Dockerisation means those |
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cat <<EOF >> "$CONFIGFILE" |
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## |
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## Dockerisation |
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## |
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background=no |
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## we don't use that feature |
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passwd_chroot_enable=no |
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## |
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## Use local system passwd account |
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## |
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local_enable=yes |
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chroot_local_user=yes |
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## Seem to be required to avoid 500 OOOps child died |
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seccomp_sandbox=no |
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EOF |
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## |
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## Users |
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## |
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## Note: this creates a file that will be interpreted in the |
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## entrypoint of the docker image. It also creates group with same gid |
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## on host to be able to easily share files. |
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build_script="$(make_build_script "$users" "$allow_writeable_chroot")" || exit 1 |
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echo "build-script:" >&2 |
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echo "$build_script" | prefix " $GRAY|$NORMAL " >&2 |
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docker_update "$SERVICE_NAME" "$build_script" -v "$SERVICE_DATASTORE/home":"/home" || exit 1 |
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config_hash=$( |
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{ |
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printf "%s\0" "$build_script" "$(cat "$CONFIGFILE")" |
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} | md5_compat) || exit 1 |
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init-config-add " |
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$MASTER_BASE_SERVICE_NAME: |
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labels: |
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- compose.config_hash=$config_hash |
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" |
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@ -0,0 +1,292 @@ |
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# -*- mode: shell-script -*- |
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ssl_get_plugin_fun() { |
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local cfg="$1" |
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type="$(echo "$cfg" | shyaml -y get-type 2>/dev/null)" || return 1 |
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case "$type" in |
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bool) |
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err "Option ${WHITE}ssl${NORMAL} value '$cfg' is not supported." |
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return 1 |
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;; |
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str) |
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keys=("$cfg") |
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;; |
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struct) |
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keys=( $(echo "$cfg" | shyaml keys 2>/dev/null) ) |
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;; |
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*) |
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err "Invalid ${WHITE}ssl${NORMAL} value type '$type': please provide a string or a struct." |
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return 1 |
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;; |
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esac |
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for key in "${keys[@]}"; do |
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target_relation="cert-provider" |
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fun="ssl_plugin_${target_relation}" |
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while read-0 relation_name target_service relation_config tech_dep; do |
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[ "$relation_name" == "${target_relation}" ] || continue |
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[ "$target_service" == "$key" ] || continue |
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verb "Corresponding plugin ${DARKGREEN}found${NORMAL}" \ |
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"in ${DARKBLUE}$relation_name${NORMAL}/${DARKYELLOW}$key${NORMAL}" |
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ssl_cfg=$(printf "%s" "$cfg" | shyaml get-value "$key" 2>/dev/null) || true |
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merged_config=$(merge_yaml_str "$relation_config" "$ssl_cfg") || return 1 |
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printf "%s\0" "$fun" "$key" "$merged_config" |
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return 0 |
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done < <(get_service_relations "$SERVICE_NAME") || return 1 |
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case "$key" in |
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cert|ca-cert|key) |
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: |
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;; |
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*) |
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err "Invalid key '$key' in ${WHITE}ssl${NORMAL}:" \ |
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"no corresponding services declared in ${DARKBLUE}${target_relation}$NORMAL" |
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return 1 |
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;; |
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esac |
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done |
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} |
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ssl_fallback_vars() { |
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local cfg="$1" DOMAIN="$2" cert key ca_cert |
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base_dir=/etc/ssl |
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print "%s\0" \ |
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"$base_dir"/certs/"${DOMAIN}".pem \ |
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"$base_dir"/private/"${DOMAIN}".key \ |
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"$base_dir"/certs/"${DOMAIN}"-ca.pem |
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print "%s\0" "$base_dir"/cert.pem "$base_dir"/privkey.pem "$base_dir"/chain.pem |
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} |
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ssl_fallback_prepare() { |
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local cfg="$1" service="$2" l_cert l_key l_ca_cert |
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shift 2 |
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read-0 l_cert l_key l_ca_cert < <(ssl_fallback_vars "$cfg" "$@") |
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dst="$CONFIGSTORE/$BASE_SERVICE_NAME" |
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volumes="" |
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for label in cert key ca-cert; do |
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if content=$(echo "$cfg" | shyaml get-value "$label" 2>/dev/null); then |
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location="$(eval echo "\$l_${label//-/_}")" |
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echo "$content" | file_put "$dst$location" |
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config_hash=$(printf "%s\0" "$config_hash" "$label" "$content" | md5_compat) |
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volumes="$volumes |
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- $dst$location:$location:ro" |
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fi |
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done |
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if [ "$volumes" ]; then |
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init-config-add "\ |
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$MASTER_TARGET_SERVICE_NAME: |
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volumes: |
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$volumes |
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" |
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fi |
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} |
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ssl_plugin_cert-provider_vars() { |
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local cfg="$1" DOMAIN="$2" |
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base_dir="/etc/letsencrypt/live/$DOMAIN" |
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print "%s\0" "$base_dir"/cert.pem "$base_dir"/privkey.pem "$base_dir"/chain.pem |
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} |
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ssl_plugin_cert-provider_prepare() { |
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local cfg="$1" service="$2" options |
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shift 2 |
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options=$(yaml_key_val_str "options" "$cfg") || return 1 |
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service_config=$(yaml_key_val_str "$service" "$options") |
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compose --debug --add-compose-content "$service_config" run --rm --service-ports "$service" \ |
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crt create "$@" || { |
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err "Failed to launch letsencrypt for certificate creation." |
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return 1 |
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} |
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init-config-add "\ |
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$MASTER_TARGET_SERVICE_NAME: |
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volumes: |
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- $DATASTORE/$service/etc/letsencrypt:/etc/letsencrypt:ro |
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" || return 1 |
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} |
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make_pasv_options() { |
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local pasv="$1" |
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if [[ "${pasv,,}" =~ ^(false|no|n|0|disable|disabled)$ ]]; then |
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echo "pasv_enable=no" |
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return 0 |
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fi |
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|
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ports="$(printf "%s" "$pasv" | shyaml get-value -q "ports")" |
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if [ "$ports" ]; then |
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if [[ "$ports" =~ ^[0-9]+-[0-9]+$ ]]; then |
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port_min=${ports##*-} |
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port_max=${ports%%-*} |
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if [ "$port_min" -gt "$port_max" ]; then |
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die "Invalid value for ${WHITE}ports${NORMAL}: first port in range has to be lesser than second." |
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fi |
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else |
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die "Invalid value for ${WHITE}ports${NORMAL}: please specify a port range (ie: '123-345')." |
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fi |
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fi |
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port_min=${port_min:-21100} |
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port_max=${port_max:-21110} |
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host_address="$(printf "%s" "$pasv" | shyaml get-value -q "address")" |
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if [ -z "$host_address" ]; then |
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if [[ "$SERVICE_NAME" =~ ^([a-z0-9]+(-[a-z0-9]+)*\.)+[a-z]{2,}$ ]]; then |
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host_address="$SERVICE_NAME" |
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fi |
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fi |
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|
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if [ -z "$host_address" ]; then |
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echo "## Could not find appropriate host return address" |
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echo "pasv_enable=no" |
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return 0 |
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fi |
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|
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if ! str_is_ipv4 "$host_address"; then |
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host_address="$(get_ip_from_hostname "$host_address")" || { |
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err "Can't resolve given hostname '$host_address'" |
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return 1 |
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} |
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else |
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err "You should NOT provide a direct IP for ${WHITE}pasv.address${NORMAL}," \ |
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"try a resolvable address." |
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return 1 |
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fi |
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cat <<EOF |
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pasv_address=$host_address |
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pasv_enable=yes |
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pasv_min_port=$port_min |
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pasv_max_port=$port_max |
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EOF |
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|
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init-config-add " |
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$SERVICE_NAME: |
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ports: |
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- \"$port_min-$port_max:$port_min-$port_max\" |
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" |
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|
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} |
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make_ssl_options() { |
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local ssl="$1" |
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if [ -z "$ssl" ]; then |
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target_relation="cert-provider" |
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ssl=no |
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while read-0 rn ts rc td; do |
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[ "$rn" == "${target_relation}" ] || continue |
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info "A ${DARKBLUE}$target_relation${NORMAL} ${DARKYELLOW}$ts${NORMAL} declared as 'ssl' value" |
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ssl="$ts" |
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break |
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done < <(get_service_relations "$SERVICE_NAME") |
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fi |
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if [[ "${ssl,,}" =~ false|no|n|0|disable|disabled ]]; then |
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echo "ssl_enable=no" |
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return 0 |
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fi |
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cat <<EOF |
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## |
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## SSL conf |
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## |
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|
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ssl_enable=yes |
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ssl_tlsv1=yes |
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ssl_sslv2=no |
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ssl_sslv3=no |
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ssl_ciphers=HIGH |
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implicit_ssl=no |
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EOF |
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read-0 SSL_PLUGIN_FUN SSL_CFG_VALUE SSL_CFG_OPTIONS < <(ssl_get_plugin_fun "$ssl") || return 1 |
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read-0 cert key ca_cert < <("$SSL_PLUGIN_FUN"_vars "$SSL_CFG_OPTIONS" "$SSL_CFG_VALUE") || return 1 |
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"$SSL_PLUGIN_FUN"_prepare "$SSL_CFG_OPTIONS" "$SSL_CFG_VALUE" || return 1 |
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|
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cat <<EOF |
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|
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rsa_cert_file=$cert |
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rsa_private_key_file=$key |
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ca_certs_file=$ca_cert |
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|
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EOF |
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|
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} |
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|
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|
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make_build_script() { |
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local users_def="$1" allow_writeable_chroot="$2" |
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|
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if [ -z "$users_def" ]; then |
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return 0 |
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fi |
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|
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fixed_groups_code="" |
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groups_code="" |
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|
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declare -A created_groups |
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while read-0 user user_def; do |
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first_group= |
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groups=() |
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first=1 |
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while read-0 group; do |
|||
[ "${created_groups[$group]}" ] && continue |
|||
if [[ "$group" == *":"* ]]; then |
|||
gid=${group##*:} |
|||
group=${group%%:*} |
|||
fixed_groups_code+="addgroup -g \"$gid\" \"$group\""$'\n' |
|||
else |
|||
groups_code+="addgroup \"$group\""$'\n' |
|||
fi |
|||
created_groups[$group]=1 |
|||
echo "X" >&2 |
|||
if [ "$first" ]; then |
|||
first_group="$group" |
|||
first= |
|||
else |
|||
remaining_groups+=("$group") |
|||
fi |
|||
groups+=("$group") |
|||
done < <(echo "$user_def" | shyaml get-values-0 groups 2>/dev/null) |
|||
password=$(echo "$user_def" | shyaml get-value password 2>/dev/null) || |
|||
password=$(gen_password 14) |
|||
uid=$(echo "$user_def" | shyaml get-value uid 2>/dev/null) |
|||
|
|||
useradd_options=( |
|||
"-D" ## don't assign a password |
|||
"-s" "/bin/false" ## default shell |
|||
) |
|||
if [ "$uid" ]; then |
|||
useradd_options+=("-u" "$uid") ## force uid |
|||
fi |
|||
if [ "$first_group" ]; then |
|||
useradd_options+=("-G" "$first_group") ## force main group |
|||
fi |
|||
|
|||
code+="adduser ${useradd_options[*]} \"$user\""$'\n' |
|||
code+="mkdir -p \"/home/$user\""$'\n' |
|||
if [ "$allow_writeable_chroot" ]; then |
|||
code+="chown $user \"/home/$user\""$'\n' ## sanitize |
|||
else |
|||
code+="chown root:root \"/home/$user\""$'\n' ## sanitize |
|||
fi |
|||
code+="chmod 755 \"/home/$user\""$'\n' ## sanitize |
|||
code+="echo '$user:$password' | chpasswd"$'\n' |
|||
for group in "${remaining_groups[@]}"; do |
|||
code+="adduser \"$user\" \"$group\""$'\n' |
|||
done |
|||
done < <(echo "$users_def" | shyaml key-values-0) |
|||
echo -n "$fixed_groups_code" |
|||
echo -n "$groups_code" |
|||
echo -n "$code" |
|||
} |
|||
@ -0,0 +1,41 @@ |
|||
config-resources: |
|||
- /etc/vsftpd/vsftpd.conf |
|||
data-resources: |
|||
- /home |
|||
- /var/log/vsftp |
|||
|
|||
default-options: |
|||
ftpd-banner: "Welcome to FTP Server" |
|||
dirmessage-enable: yes |
|||
delay-failed-login: 2 |
|||
max-clients: 10 |
|||
max-per-ip: 5 |
|||
max-login-fails: 3 |
|||
|
|||
## to check what these are |
|||
write-enable: yes |
|||
local-umask: "022" ## remember to send a string here |
|||
|
|||
users: |
|||
|
|||
docker-compose: |
|||
ports: |
|||
- "21:21" |
|||
|
|||
provides: |
|||
ftp-access: |
|||
tech-dep: reversed |
|||
|
|||
|
|||
uses: |
|||
log-rotate: |
|||
constraint: recommended |
|||
auto: pair |
|||
solves: |
|||
disk-leak: "/var/log/vsftp" |
|||
cert-provider: |
|||
constraint: optional |
|||
auto: pair |
|||
limit: n |
|||
solves: |
|||
feature: "SSL certificate generation" |
|||
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