#!/usr/bin/env python3 from flask import Flask from flask_restful import Resource, Api from flask import jsonify from flask import Response from flask import request from threading import Thread import docker import uuid import signal import time import os import re import sys import ssl import socket import subprocess import traceback docker_client = docker.DockerClient(base_url='unix://var/run/docker.sock', version='auto') app = Flask(__name__) api = Api(app) class containers_get(Resource): def get(self): containers = {} try: for container in docker_client.containers.list(all=True): containers.update({container.attrs['Id']: container.attrs}) return containers except Exception as e: return jsonify(type='danger', msg=str(e)) class container_get(Resource): def get(self, container_id): if container_id and container_id.isalnum(): try: for container in docker_client.containers.list(all=True, filters={"id": container_id}): return container.attrs except Exception as e: return jsonify(type='danger', msg=str(e)) else: return jsonify(type='danger', msg='no or invalid id defined') class container_post(Resource): def post(self, container_id, post_action): if container_id and container_id.isalnum() and post_action: try: """Dispatch container_post api call""" if post_action == 'exec': if not request.json or not 'cmd' in request.json: return jsonify(type='danger', msg='cmd is missing') if not request.json or not 'task' in request.json: return jsonify(type='danger', msg='task is missing') api_call_method_name = '__'.join(['container_post', str(post_action), str(request.json['cmd']), str(request.json['task']) ]) else: api_call_method_name = '__'.join(['container_post', str(post_action) ]) api_call_method = getattr(self, api_call_method_name, lambda container_id: jsonify(type='danger', msg='container_post - unknown api call')) print("api call: %s, container_id: %s" % (api_call_method_name, container_id)) return api_call_method(container_id) except Exception as e: print("error - container_post: %s" % str(e)) return jsonify(type='danger', msg=str(e)) else: return jsonify(type='danger', msg='invalid container id or missing action') # api call: container_post - post_action: stop def container_post__stop(self, container_id): for container in docker_client.containers.list(all=True, filters={"id": container_id}): container.stop() return jsonify(type='success', msg='command completed successfully') # api call: container_post - post_action: start def container_post__start(self, container_id): for container in docker_client.containers.list(all=True, filters={"id": container_id}): container.start() return jsonify(type='success', msg='command completed successfully') # api call: container_post - post_action: restart def container_post__restart(self, container_id): for container in docker_client.containers.list(all=True, filters={"id": container_id}): container.restart() return jsonify(type='success', msg='command completed successfully') # api call: container_post - post_action: top def container_post__top(self, container_id): for container in docker_client.containers.list(all=True, filters={"id": container_id}): return jsonify(type='success', msg=container.top()) # api call: container_post - post_action: stats def container_post__stats(self, container_id): for container in docker_client.containers.list(all=True, filters={"id": container_id}): for stat in container.stats(decode=True, stream=True): return jsonify(type='success', msg=stat ) # api call: container_post - post_action: exec - cmd: mailq - task: delete def container_post__exec__mailq__delete(self, container_id): if 'items' in request.json: r = re.compile("^[0-9a-fA-F]+$") filtered_qids = filter(r.match, request.json['items']) if filtered_qids: flagged_qids = ['-d %s' % i for i in filtered_qids] sanitized_string = str(' '.join(flagged_qids)); for container in docker_client.containers.list(filters={"id": container_id}): postsuper_r = container.exec_run(["/bin/bash", "-c", "/usr/sbin/postsuper " + sanitized_string]) return exec_run_handler('generic', postsuper_r) # api call: container_post - post_action: exec - cmd: mailq - task: hold def container_post__exec__mailq__hold(self, container_id): if 'items' in request.json: r = re.compile("^[0-9a-fA-F]+$") filtered_qids = filter(r.match, request.json['items']) if filtered_qids: flagged_qids = ['-h %s' % i for i in filtered_qids] sanitized_string = str(' '.join(flagged_qids)); for container in docker_client.containers.list(filters={"id": container_id}): postsuper_r = container.exec_run(["/bin/bash", "-c", "/usr/sbin/postsuper " + sanitized_string]) return exec_run_handler('generic', postsuper_r) # api call: container_post - post_action: exec - cmd: mailq - task: unhold def container_post__exec__mailq__unhold(self, container_id): if 'items' in request.json: r = re.compile("^[0-9a-fA-F]+$") filtered_qids = filter(r.match, request.json['items']) if filtered_qids: flagged_qids = ['-H %s' % i for i in filtered_qids] sanitized_string = str(' '.join(flagged_qids)); for container in docker_client.containers.list(filters={"id": container_id}): postsuper_r = container.exec_run(["/bin/bash", "-c", "/usr/sbin/postsuper " + sanitized_string]) return exec_run_handler('generic', postsuper_r) # api call: container_post - post_action: exec - cmd: mailq - task: deliver def container_post__exec__mailq__deliver(self, container_id): if 'items' in request.json: r = re.compile("^[0-9a-fA-F]+$") filtered_qids = filter(r.match, request.json['items']) if filtered_qids: flagged_qids = ['-i %s' % i for i in filtered_qids] for container in docker_client.containers.list(filters={"id": container_id}): for i in flagged_qids: postqueue_r = container.exec_run(["/bin/bash", "-c", "/usr/sbin/postqueue " + i], user='postfix') # todo: check each exit code return jsonify(type='success', msg=str("Scheduled immediate delivery")) # api call: container_post - post_action: exec - cmd: mailq - task: list def container_post__exec__mailq__list(self, container_id): for container in docker_client.containers.list(filters={"id": container_id}): mailq_return = container.exec_run(["/usr/sbin/postqueue", "-j"], user='postfix') return exec_run_handler('utf8_text_only', mailq_return) # api call: container_post - post_action: exec - cmd: mailq - task: flush def container_post__exec__mailq__flush(self, container_id): for container in docker_client.containers.list(filters={"id": container_id}): postqueue_r = container.exec_run(["/usr/sbin/postqueue", "-f"], user='postfix') return exec_run_handler('generic', postqueue_r) # api call: container_post - post_action: exec - cmd: mailq - task: super_delete def container_post__exec__mailq__super_delete(self, container_id): for container in docker_client.containers.list(filters={"id": container_id}): postsuper_r = container.exec_run(["/usr/sbin/postsuper", "-d", "ALL"]) return exec_run_handler('generic', postsuper_r) # api call: container_post - post_action: exec - cmd: system - task: fts_rescan def container_post__exec__system__fts_rescan(self, container_id): if 'username' in request.json: for container in docker_client.containers.list(filters={"id": container_id}): rescan_return = container.exec_run(["/bin/bash", "-c", "/usr/bin/doveadm fts rescan -u '" + request.json['username'].replace("'", "'\\''") + "'"], user='vmail') if rescan_return.exit_code == 0: return jsonify(type='success', msg='fts_rescan: rescan triggered') else: return jsonify(type='warning', msg='fts_rescan error') if 'all' in request.json: for container in docker_client.containers.list(filters={"id": container_id}): rescan_return = container.exec_run(["/bin/bash", "-c", "/usr/bin/doveadm fts rescan -A"], user='vmail') if rescan_return.exit_code == 0: return jsonify(type='success', msg='fts_rescan: rescan triggered') else: return jsonify(type='warning', msg='fts_rescan error') # api call: container_post - post_action: exec - cmd: system - task: df def container_post__exec__system__df(self, container_id): if 'dir' in request.json: for container in docker_client.containers.list(filters={"id": container_id}): df_return = container.exec_run(["/bin/bash", "-c", "/bin/df -H '" + request.json['dir'].replace("'", "'\\''") + "' | /usr/bin/tail -n1 | /usr/bin/tr -s [:blank:] | /usr/bin/tr ' ' ','"], user='nobody') if df_return.exit_code == 0: return df_return.output.decode('utf-8').rstrip() else: return "0,0,0,0,0,0" # api call: container_post - post_action: exec - cmd: system - task: mysql_upgrade def container_post__exec__system__mysql_upgrade(self, container_id): for container in docker_client.containers.list(filters={"id": container_id}): sql_return = container.exec_run(["/bin/bash", "-c", "/usr/bin/mysql_upgrade -uroot -p'" + os.environ['DBROOT'].replace("'", "'\\''") + "'\n"], user='mysql') if sql_return.exit_code == 0: matched = False for line in sql_return.output.decode('utf-8').split("\n"): if 'is already upgraded to' in line: matched = True if matched: return jsonify(type='success', msg='mysql_upgrade: already upgraded', text=sql_return.output.decode('utf-8')) else: container.restart() return jsonify(type='warning', msg='mysql_upgrade: upgrade was applied', text=sql_return.output.decode('utf-8')) else: return jsonify(type='error', msg='mysql_upgrade: error running command', text=sql_return.output.decode('utf-8')) # api call: container_post - post_action: exec - cmd: reload - task: dovecot def container_post__exec__reload__dovecot(self, container_id): for container in docker_client.containers.list(filters={"id": container_id}): reload_return = container.exec_run(["/bin/bash", "-c", "/usr/sbin/dovecot reload"]) return exec_run_handler('generic', reload_return) # api call: container_post - post_action: exec - cmd: reload - task: postfix def container_post__exec__reload__postfix(self, container_id): for container in docker_client.containers.list(filters={"id": container_id}): reload_return = container.exec_run(["/bin/bash", "-c", "/usr/sbin/postfix reload"]) return exec_run_handler('generic', reload_return) # api call: container_post - post_action: exec - cmd: reload - task: nginx def container_post__exec__reload__nginx(self, container_id): for container in docker_client.containers.list(filters={"id": container_id}): reload_return = container.exec_run(["/bin/sh", "-c", "/usr/sbin/nginx -s reload"]) return exec_run_handler('generic', reload_return) # api call: container_post - post_action: exec - cmd: sieve - task: list def container_post__exec__sieve__list(self, container_id): if 'username' in request.json: for container in docker_client.containers.list(filters={"id": container_id}): sieve_return = container.exec_run(["/bin/bash", "-c", "/usr/bin/doveadm sieve list -u '" + request.json['username'].replace("'", "'\\''") + "'"]) return exec_run_handler('utf8_text_only', sieve_return) # api call: container_post - post_action: exec - cmd: sieve - task: print def container_post__exec__sieve__print(self, container_id): if 'username' in request.json and 'script_name' in request.json: for container in docker_client.containers.list(filters={"id": container_id}): cmd = ["/bin/bash", "-c", "/usr/bin/doveadm sieve get -u '" + request.json['username'].replace("'", "'\\''") + "' '" + request.json['script_name'].replace("'", "'\\''") + "'"] sieve_return = container.exec_run(cmd) return exec_run_handler('utf8_text_only', sieve_return) # api call: container_post - post_action: exec - cmd: maildir - task: cleanup def container_post__exec__maildir__cleanup(self, container_id): if 'maildir' in request.json: for container in docker_client.containers.list(filters={"id": container_id}): sane_name = re.sub(r'\W+', '', request.json['maildir']) cmd = ["/bin/bash", "-c", "if [[ -d '/var/vmail/" + request.json['maildir'].replace("'", "'\\''") + "' ]]; then /bin/mv '/var/vmail/" + request.json['maildir'].replace("'", "'\\''") + "' '/var/vmail/_garbage/" + str(int(time.time())) + "_" + sane_name + "'; fi"] maildir_cleanup = container.exec_run(cmd, user='vmail') return exec_run_handler('generic', maildir_cleanup) # api call: container_post - post_action: exec - cmd: rspamd - task: worker_password def container_post__exec__rspamd__worker_password(self, container_id): if 'raw' in request.json: for container in docker_client.containers.list(filters={"id": container_id}): cmd = "/usr/bin/rspamadm pw -e -p '" + request.json['raw'].replace("'", "'\\''") + "' 2> /dev/null" cmd_response = exec_cmd_container(container, cmd, user="_rspamd") matched = False for line in cmd_response.split("\n"): if '$2$' in line: hash = line.strip() hash_out = re.search('\$2\$.+$', hash).group(0) rspamd_passphrase_hash = re.sub('[^0-9a-zA-Z\$]+', '', hash_out.rstrip()) rspamd_password_filename = "/etc/rspamd/override.d/worker-controller-password.inc" cmd = '''/bin/echo 'enable_password = "%s";' > %s && cat %s''' % (rspamd_passphrase_hash, rspamd_password_filename, rspamd_password_filename) cmd_response = exec_cmd_container(container, cmd, user="_rspamd") if rspamd_passphrase_hash.startswith("$2$") and rspamd_passphrase_hash in cmd_response: container.restart() matched = True if matched: return jsonify(type='success', msg='command completed successfully') else: return jsonify(type='danger', msg='command did not complete') def exec_cmd_container(container, cmd, user, timeout=2, shell_cmd="/bin/bash"): def recv_socket_data(c_socket, timeout): c_socket.setblocking(0) total_data=[]; data=''; begin=time.time() while True: if total_data and time.time()-begin > timeout: break elif time.time()-begin > timeout*2: break try: data = c_socket.recv(8192) if data: total_data.append(data.decode('utf-8')) #change the beginning time for measurement begin=time.time() else: #sleep for sometime to indicate a gap time.sleep(0.1) break except: pass return ''.join(total_data) try : socket = container.exec_run([shell_cmd], stdin=True, socket=True, user=user).output._sock if not cmd.endswith("\n"): cmd = cmd + "\n" socket.send(cmd.encode('utf-8')) data = recv_socket_data(socket, timeout) socket.close() return data except Exception as e: print("error - exec_cmd_container: %s" % str(e)) traceback.print_exc(file=sys.stdout) def exec_run_handler(type, output): if type == 'generic': if output.exit_code == 0: return jsonify(type='success', msg='command completed successfully') else: return jsonify(type='danger', msg='command failed: ' + output.output.decode('utf-8')) if type == 'utf8_text_only': r = Response(response=output.output.decode('utf-8'), status=200, mimetype="text/plain") r.headers["Content-Type"] = "text/plain; charset=utf-8" return r class GracefulKiller: kill_now = False def __init__(self): signal.signal(signal.SIGINT, self.exit_gracefully) signal.signal(signal.SIGTERM, self.exit_gracefully) def exit_gracefully(self, signum, frame): self.kill_now = True def create_self_signed_cert(): process = subprocess.Popen( "openssl req -x509 -newkey rsa:4096 -sha256 -days 3650 -nodes -keyout /app/dockerapi_key.pem -out /app/dockerapi_cert.pem -subj /CN=dockerapi/O=mailcow -addext subjectAltName=DNS:dockerapi".split(), stdout = subprocess.PIPE, stderr = subprocess.PIPE, shell=False ) process.wait() def startFlaskAPI(): create_self_signed_cert() try: ctx = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH) ctx.check_hostname = False ctx.load_cert_chain(certfile='/app/dockerapi_cert.pem', keyfile='/app/dockerapi_key.pem') except: print ("Cannot initialize TLS, retrying in 5s...") time.sleep(5) app.run(debug=False, host='0.0.0.0', port=443, threaded=True, ssl_context=ctx) api.add_resource(containers_get, '/containers/json') api.add_resource(container_get, '/containers//json') api.add_resource(container_post, '/containers//') if __name__ == '__main__': api_thread = Thread(target=startFlaskAPI) api_thread.daemon = True api_thread.start() killer = GracefulKiller() while True: time.sleep(1) if killer.kill_now: break print ("Stopping dockerapi-mailcow")