mirror of
https://github.com/openappsec/attachment.git
synced 2025-06-28 16:41:03 +03:00
22852d8428
* update istio * update istio * fixing istio * fix library name * fix library name * fix missing defenition of advanced-model * fix append * fix wrong name * fix pvc issue * fix config.go file * fix config.go file * fix config.go file * fix config.go file --------- Co-authored-by: Daniel Eisenberg <danielei@checkpoint.com>
792 lines
33 KiB
Python
Executable File
792 lines
33 KiB
Python
Executable File
import os
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import json
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import logging
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import base64
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import secretgen
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import sys
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import re
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import requests
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from kubernetes import client, config
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from flask import Flask, request, jsonify, Response
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app = Flask(__name__)
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# Read agent image and tag from environment variables
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AGENT_IMAGE = os.getenv('AGENT_IMAGE', 'ghcr.io/openappsec/agent')
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AGENT_TAG = os.getenv('AGENT_TAG', 'latest')
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AGENT_CPU = os.getenv('AGENT_CPU', '200m')
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INIT_CONTAINER_IMAGE = os.getenv('INIT_CONTAINER_IMAGE', 'ghcr.io/openappsec/openappsec-envoy-filters')
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INIT_CONTAINER_TAG = os.getenv('INIT_CONTAINER_TAG', 'latest')
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ISTIOD_PORT = os.getenv('ISTIOD_PORT', '15014')
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FULL_AGENT_IMAGE = f"{AGENT_IMAGE}:{AGENT_TAG}"
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FULL_INIT_CONTAINER_IMAGE = f"{INIT_CONTAINER_IMAGE}:{INIT_CONTAINER_TAG}"
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config.load_incluster_config()
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def configure_logging():
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# Read the DEBUG_LEVEL from environment variables, defaulting to WARNING
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DEBUG_LEVEL = os.getenv('DEBUG_LEVEL', 'WARNING').upper()
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# Map the string value of DEBUG_LEVEL to actual logging level
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logging_levels = {
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'DEBUG': logging.DEBUG,
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'INFO': logging.INFO,
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'WARNING': logging.WARNING,
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'ERROR': logging.ERROR,
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'CRITICAL': logging.CRITICAL
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}
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# Set the logging level based on the environment variable
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log_level = logging_levels.get(DEBUG_LEVEL, logging.INFO)
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# Configure Flask's logger to handle the specified logging level
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handler = logging.StreamHandler()
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handler.setLevel(log_level)
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formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')
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handler.setFormatter(formatter)
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# Remove any existing handlers
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if app.logger.hasHandlers():
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app.logger.handlers.clear()
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app.logger.addHandler(handler)
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app.logger.setLevel(log_level)
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# The sidecar container spec with configurable image
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def get_sidecar_container():
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app.logger.debug("Entering get_sidecar_container()")
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token = os.getenv("TOKEN")
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custom_fog_enabled = os.getenv("CUSTOM_FOG_ENABLED") == "true" # Check if it's set to "true"
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fog_address = os.getenv("FOG_ADDRESS")
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appsec_proxy = os.getenv("APPSEC_PROXY")
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config_map_ref = os.getenv("CONFIG_MAP_REF")
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secret_ref = os.getenv("SECRET_REF")
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persistence_enabled = os.getenv("APPSEC_PERSISTENCE_ENABLED", "false").lower() == "true"
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# Prepare the volumeMounts list
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volume_mounts = [
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{"name": "envoy-attachment-shared", "mountPath": "/envoy/attachment/shared/"},
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{"name": "advanced-model", "mountPath": "/advanced-model"}
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]
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if persistence_enabled:
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volume_mounts.extend([
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{"name": "open-appsec-conf", "mountPath": "/etc/cp/conf"},
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{"name": "open-appsec-data", "mountPath": "/etc/cp/data"}
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])
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args = []
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if token:
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args.extend(["--token", token])
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else:
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args.append("--hybrid-mode")
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if custom_fog_enabled and fog_address:
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args.extend(["--fog", fog_address])
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if appsec_proxy:
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args.extend(["--proxy", appsec_proxy])
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optional_env_vars = {
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"AGENT_TOKEN": os.getenv("AGENT_TOKEN"),
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"user_email": os.getenv("user_email"),
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"appsecClassName": os.getenv("appsecClassName"),
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"SHARED_STORAGE_HOST": os.getenv("SHARED_STORAGE_HOST"),
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"LEARNING_HOST": os.getenv("LEARNING_HOST"),
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"TUNING_HOST": os.getenv("TUNING_HOST"),
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"LOCAL_TUNING_ENABLED": os.getenv("LOCAL_TUNING_ENABLED"),
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"PLAYGROUND": os.getenv("PLAYGROUND"),
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"CRDS_SCOPE": os.getenv("CRDS_SCOPE"),
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}
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# Base environment variables
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env = [
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{"name": "registered_server", "value": "ISTIO Server"}
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]
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# Add optional environment variables if they are set
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for var_name, var_value in optional_env_vars.items():
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if var_value is not None: # Only add if the variable is set
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env.append({"name": var_name, "value": var_value})
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sidecar = {
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"name": "open-appsec-nano-agent",
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"image": FULL_AGENT_IMAGE,
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"imagePullPolicy": "Always",
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"command": ["/cp-nano-agent"],
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"args": args,
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"env": env,
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"volumeMounts": volume_mounts,
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"resources": {
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"requests": {
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"cpu": AGENT_CPU
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}
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},
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"envFrom": [
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{
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"configMapRef": {
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"name": config_map_ref
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}
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},
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{
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"secretRef": {
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"name": secret_ref
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}
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}
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],
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"securityContext": {
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"runAsNonRoot": False,
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"runAsUser": 0
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},
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"terminationMessagePath": "/dev/termination-log",
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"terminationMessagePolicy": "File"
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}
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app.logger.debug(f"Sidecar container spec: {sidecar}")
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app.logger.debug("Exiting get_sidecar_container()")
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return sidecar
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def get_istio_version():
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url = f"http://istiod.istio-system:{ISTIOD_PORT}/version"
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response = requests.get(url)
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if response.status_code == 200:
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return response.text.strip().split('-')[0] # Extracting version
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else:
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raise Exception(f"Failed to get Istio version: {response.status_code}")
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def get_envoy_sha(istio_version):
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url = f"https://raw.githubusercontent.com/istio/proxy/{istio_version}/WORKSPACE"
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response = requests.get(url)
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if response.status_code == 200:
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match = re.search(r'ENVOY_SHA = \"([a-f0-9]+)\"', response.text)
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if match:
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return match.group(1)
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else:
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raise Exception("Envoy SHA not found in WORKSPACE file")
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else:
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raise Exception(f"Failed to get WORKSPACE file: {response.status_code}")
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def get_envoy_version(envoy_sha):
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url = f"https://raw.githubusercontent.com/envoyproxy/envoy/{envoy_sha}/VERSION.txt"
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response = requests.get(url)
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if response.status_code == 200:
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version = response.text.strip()
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match = re.search(r'(\d+\.\d+)', version)
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if match:
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return match.group(1)
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else:
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raise Exception("Failed to extract major.minor version")
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else:
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raise Exception(f"Failed to get Envoy version: {response.status_code}")
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def get_init_container():
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# Define the initContainer you want to inject
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istio_version = get_istio_version()
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app.logger.debug(f"Istio Version: {istio_version}")
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envoy_sha = get_envoy_sha(istio_version)
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app.logger.debug(f"Envoy SHA: {envoy_sha}")
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envoy_version = get_envoy_version(envoy_sha)
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app.logger.info(f"Envoy Version: {envoy_version}")
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init_container = {
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"name": "prepare-attachment",
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"image": FULL_INIT_CONTAINER_IMAGE,
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"imagePullPolicy": "Always",
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"command": [
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"sh", "-c",
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f"mkdir -p /envoy/attachment/shared && cp -r /envoy/attachment/lib* /envoy/attachment/shared && cp /envoy/attachment/versions/{envoy_version}/lib* /envoy/attachment/shared"
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],
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"volumeMounts": [
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{
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"mountPath": "/envoy/attachment/shared",
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"name": "envoy-attachment-shared"
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}
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]
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}
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app.logger.debug(f"Init container spec: {init_container}")
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app.logger.debug("Exiting get_init_container()")
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return init_container
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# The volume mount configuration for both the original and sidecar containers
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def get_volume_mount():
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app.logger.debug("Entering get_volume_mount()")
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volume_mount = {
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"name": "envoy-attachment-shared",
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"mountPath": "/usr/lib/attachment/"
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}
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app.logger.debug(f"Volume mount spec: {volume_mount}")
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app.logger.debug("Exiting get_volume_mount()")
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return volume_mount
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# Volume definition for the pod
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def get_volume_definition():
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app.logger.debug("Entering get_volume_definition()")
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persistence_enabled = os.getenv("APPSEC_PERSISTENCE_ENABLED", "false").lower() == "true"
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volume_def = [
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{
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"name": "envoy-attachment-shared",
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"emptyDir": {}
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},
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{
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"name": "advanced-model",
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"configMap": {
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"name": "advanced-model-config",
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"optional": True
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}
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}
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]
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if persistence_enabled:
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volume_def.extend([
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{
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"name": "open-appsec-conf",
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"persistentVolumeClaim": {
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"claimName": "open-appsec-conf"
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}
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},
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{
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"name": "open-appsec-data",
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"persistentVolumeClaim": {
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"claimName": "open-appsec-data"
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}
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}
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])
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app.logger.debug(f"Volume definition: {volume_def}")
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app.logger.debug("Exiting get_volume_definition()")
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return volume_def
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def add_env_if_not_exist(containers, container_name, patches):
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# Find the container by name
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container = next((c for c in containers if c.get('name') == container_name), None)
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if container:
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# Get the existing environment variables (if any)
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env_vars = container.get('env', None)
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if env_vars is None:
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# If no env variables exist, add an empty env array first
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patches.append({
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"op": "add",
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"path": f"/spec/containers/{containers.index(container)}/env",
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"value": []
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})
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def add_env_variable_value_from(containers, container_name, env_var_name, env_value, patches, value_from):
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"""Adds or updates a specified environment variable in a given container."""
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container_index = next((i for i, container in enumerate(containers) if container['name'] == container_name), None)
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if container_index is not None:
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env_vars = containers[container_index].get('env', [])
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existing_env_var = next((env for env in env_vars if env['name'] == env_var_name), None)
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if existing_env_var:
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env_var_patch = {
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"op": "replace",
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"path": f"/spec/containers/{container_index}/env/{env_vars.index(existing_env_var)}",
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"value": {"name": env_var_name, "valueFrom": value_from}
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}
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patches.append(env_var_patch)
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app.logger.debug(f"Updated {env_var_name} environment variable in {container_name} container to use valueFrom.")
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else:
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env_var_patch = {
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"op": "add",
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"path": f"/spec/containers/{container_index}/env/-",
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"value": {"name": env_var_name, "valueFrom": value_from}
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}
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patches.append(env_var_patch)
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app.logger.debug(f"Added {env_var_name} environment variable with valueFrom to {container_name} container.")
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else:
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app.logger.warning(f"{container_name} container not found; no environment variable modification applied.")
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def add_env_variable(containers, container_name, env_var_name, env_value, patches):
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"""Adds or updates a specified environment variable in a given container."""
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# Find the specified container by name
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container_index = next((i for i, container in enumerate(containers) if container['name'] == container_name), None)
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if container_index is not None:
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# Get the list of environment variables for the specified container
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env_vars = containers[container_index].get('env', [])
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# Find the specified environment variable if it exists
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existing_env_var = next((env for env in env_vars if env['name'] == env_var_name), None)
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# If the environment variable exists, handle it based on its name
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if existing_env_var:
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current_value = existing_env_var['value']
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if env_var_name == 'LD_LIBRARY_PATH':
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# For LD_LIBRARY_PATH, append env_value if not already present
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if env_value not in current_value:
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new_value = f"{current_value}:{env_value}"
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env_var_patch = {
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"op": "replace",
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"path": f"/spec/containers/{container_index}/env/{env_vars.index(existing_env_var)}/value",
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"value": new_value
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}
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patches.append(env_var_patch)
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app.logger.debug(f"Updated {env_var_name} environment variable in {container_name} container to new value.")
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else:
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app.logger.debug(f"{env_var_name} already exists with the correct value; no changes made.")
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else:
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# For other environment variables, replace the value directly
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env_var_patch = {
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"op": "replace",
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"path": f"/spec/containers/{container_index}/env/{env_vars.index(existing_env_var)}/value",
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"value": env_value
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}
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patches.append(env_var_patch)
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app.logger.debug(f"Replaced {env_var_name} environment variable in {container_name} container with new value.")
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else:
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# Add the environment variable if it does not exist
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env_var_patch = {
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"op": "add",
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"path": f"/spec/containers/{container_index}/env/-",
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"value": {
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"name": env_var_name,
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"value": env_value
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}
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}
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patches.append(env_var_patch)
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app.logger.debug(f"Added {env_var_name} environment variable to {container_name} container.")
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else:
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app.logger.warning(f"{container_name} container not found; no environment variable modification applied.")
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def remove_env_variable(containers, container_name, env_var_name, patches):
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"""Removes a specified environment variable from a given container if it exists."""
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# Find the specified container by name
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container_index = next((i for i, container in enumerate(containers) if container['name'] == container_name), None)
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if container_index is not None:
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# Get the list of environment variables for the specified container
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env_vars = containers[container_index].get('env', [])
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# Check if the specified environment variable exists
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env_var_exists = any(env['name'] == env_var_name for env in env_vars)
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# Remove the environment variable if it exists
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if env_var_exists:
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# Find the index of the specified environment variable in the env array
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env_var_index = next(i for i, env in enumerate(env_vars) if env['name'] == env_var_name)
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patches.append({
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"op": "remove",
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"path": f"/spec/containers/{container_index}/env/{env_var_index}"
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})
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app.logger.debug(f"Removed {env_var_name} environment variable from {container_name} container.")
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else:
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app.logger.debug(f"{env_var_name} does not exist, nothing to remove.")
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else:
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app.logger.warning(f"{container_name} container not found; no environment variable modification applied.")
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def create_or_update_envoy_filter(name, namespace, selector_label_name, selector_label_value):
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api = client.CustomObjectsApi()
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# Define the EnvoyFilter specification
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envoy_filter_spec = {
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"apiVersion": "networking.istio.io/v1alpha3",
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"kind": "EnvoyFilter",
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"metadata": {
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"name": name,
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"namespace": namespace,
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"labels": {
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"owner": "waf"
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}
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},
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"spec": {
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"workloadSelector": {
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"labels": {
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selector_label_name: selector_label_value
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}
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},
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"configPatches": [
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{
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"applyTo": "HTTP_FILTER",
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"match": {
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"context": "GATEWAY",
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"listener": {
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"filterChain": {
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"filter": {
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"name": "envoy.filters.network.http_connection_manager"
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}
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}
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}
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},
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"patch": {
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"operation": "INSERT_BEFORE",
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"value": {
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"name": "envoy.filters.http.golang",
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"typed_config": {
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"@type": "type.googleapis.com/envoy.extensions.filters.http.golang.v3alpha.Config",
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"library_id": "cp_nano_filter",
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"library_path": "/usr/lib/attachment/libenvoy_attachment.so",
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"plugin_name": "cp_nano_filter",
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"plugin_config": {
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"@type": "type.googleapis.com/xds.type.v3.TypedStruct",
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"type_url": "type.googleapis.com/envoy.extensions.filters.http.golang.v3alpha.PluginConfig",
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"value": {
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"prefix_localreply_body": "Configured local reply from go"
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}
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}
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}
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}
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}
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}
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]
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}
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}
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# Check if the EnvoyFilter exists
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try:
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existing_envoy_filter = api.get_namespaced_custom_object(
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group="networking.istio.io",
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version="v1alpha3",
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namespace=namespace,
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plural="envoyfilters",
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name=name
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)
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# Compare workloadSelector labels
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existing_labels = existing_envoy_filter.get("spec", {}).get("workloadSelector", {}).get("labels", {})
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new_labels = envoy_filter_spec["spec"]["workloadSelector"]["labels"]
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if existing_labels == new_labels:
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app.logger.info(f"EnvoyFilter '{name}' already exists with matching selector labels.")
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return
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else:
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# Update the existing EnvoyFilter's workloadSelector labels
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existing_envoy_filter["spec"]["workloadSelector"]["labels"] = new_labels
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api.replace_namespaced_custom_object(
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group="networking.istio.io",
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version="v1alpha3",
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namespace=namespace,
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plural="envoyfilters",
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name=name,
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body=existing_envoy_filter
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)
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app.logger.info(f"EnvoyFilter '{name}' updated successfully with new selector labels.")
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return
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except client.exceptions.ApiException as e:
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if e.status == 404:
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|
# EnvoyFilter doesn't exist, proceed with creation
|
|
api.create_namespaced_custom_object(
|
|
group="networking.istio.io",
|
|
version="v1alpha3",
|
|
namespace=namespace,
|
|
plural="envoyfilters",
|
|
body=envoy_filter_spec
|
|
)
|
|
app.logger.info(f"EnvoyFilter '{name}' created successfully.")
|
|
|
|
def remove_envoy_filter_by_selector(namespace, selector_label_name, selector_label_value):
|
|
api = client.CustomObjectsApi()
|
|
try:
|
|
# List all EnvoyFilters in the namespace
|
|
existing_envoy_filters = api.list_namespaced_custom_object(
|
|
group="networking.istio.io",
|
|
version="v1alpha3",
|
|
namespace=namespace,
|
|
plural="envoyfilters"
|
|
)
|
|
|
|
# Check if there is any EnvoyFilter with the same selector labels
|
|
for item in existing_envoy_filters.get("items", []):
|
|
workload_selector = item["spec"].get("workloadSelector", {}).get("labels", {})
|
|
if workload_selector.get(selector_label_name) == selector_label_value:
|
|
# Delete the matching EnvoyFilter
|
|
api.delete_namespaced_custom_object(
|
|
group="networking.istio.io",
|
|
version="v1alpha3",
|
|
namespace=namespace,
|
|
plural="envoyfilters",
|
|
name=item["metadata"]["name"],
|
|
body=client.V1DeleteOptions()
|
|
)
|
|
print(f"EnvoyFilter '{item['metadata']['name']}' with matching selector labels deleted successfully.")
|
|
return
|
|
print("No EnvoyFilter found with the specified selector labels.")
|
|
|
|
except client.exceptions.ApiException as e:
|
|
print(f"Failed to delete EnvoyFilter: {e}")
|
|
|
|
@app.route('/mutate', methods=['POST'])
|
|
def mutate():
|
|
app.logger.debug("Received request to mutate deployment.")
|
|
|
|
try:
|
|
request_data = request.get_json()
|
|
app.logger.debug("Admission Review Request: %s", json.dumps(request_data, indent=2))
|
|
except Exception as e:
|
|
app.logger.error("Failed to parse request JSON: %s", str(e))
|
|
return Response(status=400)
|
|
|
|
# Extract the UID and the object from the request
|
|
uid = request_data.get('request', {}).get('uid', '')
|
|
obj = request_data.get('request', {}).get('object', {})
|
|
namespace = request_data.get("request", {}).get("namespace")
|
|
app.logger.debug("Extracted UID: %s", uid)
|
|
app.logger.debug("Extracted Object: %s", json.dumps(obj, indent=2))
|
|
|
|
# Initialize patches
|
|
patches = []
|
|
|
|
# Extract deployment annotations and spec
|
|
annotations = obj.get('metadata', {}).get('annotations', {})
|
|
spec = obj.get('spec', {})
|
|
app.logger.debug("Current annotations: %s", json.dumps(annotations, indent=2))
|
|
app.logger.debug("Deployment spec: %s", json.dumps(spec, indent=2))
|
|
|
|
# Check if the 'original-configuration' annotation already exists
|
|
if 'original-configuration' not in annotations:
|
|
app.logger.debug("Original configuration annotation not found, storing original spec.")
|
|
# Store the original spec in an annotation as a JSON string
|
|
original_spec_json = json.dumps(spec)
|
|
patches.append({
|
|
"op": "add",
|
|
"path": "/metadata/annotations/original-configuration",
|
|
"value": original_spec_json
|
|
})
|
|
app.logger.debug("Added original-configuration annotation patch: %s", patches[-1])
|
|
|
|
# Extract containers and check if sidecar exists
|
|
containers = obj.get('spec', {}).get('containers', [])
|
|
init_containers = obj.get('spec', {}).get('initContainers', [])
|
|
volumes = obj.get('spec', {}).get('volumes', [])
|
|
app.logger.debug("Current containers in the pod: %s", json.dumps(containers, indent=2))
|
|
sidecar_exists = any(container['name'] == 'open-appsec-nano-agent' for container in containers)
|
|
init_container_exist = any(init_container['name'] == 'prepare-attachment' for init_container in init_containers)
|
|
volume_exist = any(volume['name'] == 'envoy-attachment-shared' for volume in volumes)
|
|
app.logger.debug("Does sidecar 'open-appsec-nano-agent' exist? %s", sidecar_exists)
|
|
|
|
# Determine if we should remove the injected data
|
|
REMOVE_WAF = os.getenv('REMOVE_INJECTED_DATA', 'false').lower() == 'true'
|
|
DEPLOY_FILTER = os.getenv('DEPLOY_ENVOY_FILTER', 'false').lower() == 'true'
|
|
|
|
ISTIO_CONTAINER_NAME = os.getenv('ISTIO_CONTAINER_NAME', 'istio-proxy')
|
|
LIBRARY_PATH_VALUE = os.getenv('LIBRARY_PATH_VALUE', '/usr/lib/attachment')
|
|
SELECTOR_LABEL_NAME = os.getenv("SELECTOR_LABEL_NAME")
|
|
SELECTOR_LABEL_VALUE = os.getenv("SELECTOR_LABEL_VALUE")
|
|
CONCURRENCY_CALC_VALUE = os.getenv('CONCURRENCY_CALC')
|
|
CONFIG_PORT_VALUE = os.getenv('CONFIG_PORT')
|
|
CONCURRENCY_NUMBER_VALUE = os.getenv('CONCURRENCY_NUMBER')
|
|
if REMOVE_WAF:
|
|
if DEPLOY_FILTER and SELECTOR_LABEL_NAME and SELECTOR_LABEL_VALUE:
|
|
remove_envoy_filter_by_selector(namespace, SELECTOR_LABEL_NAME, SELECTOR_LABEL_VALUE)
|
|
|
|
app.logger.debug("Removing injected sidecar and associated resources.")
|
|
|
|
# Remove ld library path env variable
|
|
if ISTIO_CONTAINER_NAME:
|
|
if CONCURRENCY_NUMBER_VALUE:
|
|
remove_env_variable(containers, ISTIO_CONTAINER_NAME, 'CONCURRENCY_NUMBER', patches)
|
|
if CONFIG_PORT_VALUE:
|
|
remove_env_variable(containers, ISTIO_CONTAINER_NAME, 'CONFIG_PORT', patches)
|
|
if CONCURRENCY_CALC_VALUE:
|
|
remove_env_variable(containers, ISTIO_CONTAINER_NAME, 'CONCURRENCY_CALC', patches)
|
|
if LIBRARY_PATH_VALUE:
|
|
remove_env_variable(containers, ISTIO_CONTAINER_NAME, 'LD_LIBRARY_PATH', patches)
|
|
|
|
if 'shareProcessNamespace' in obj.get('spec', {}):
|
|
patches.append({
|
|
"op": "remove",
|
|
"path": "/spec/shareProcessNamespace"
|
|
})
|
|
app.logger.debug("Removed shareProcessNamespace patch")
|
|
else:
|
|
app.logger.debug("shareProcessNamespace not found; no patch to remove it")
|
|
|
|
# Remove the init container if it exists
|
|
if init_container_exist:
|
|
for idx, init_container in enumerate(init_containers):
|
|
if init_container['name'] == 'prepare-attachment':
|
|
patches.append({
|
|
"op": "remove",
|
|
"path": f"/spec/initContainers/{idx}"
|
|
})
|
|
app.logger.debug(f"Removed init container patch: {patches[-1]}")
|
|
break # Stop once we find and remove the target container
|
|
|
|
# Remove the sidecar container if it exists
|
|
if sidecar_exists:
|
|
for idx, container in enumerate(containers):
|
|
volume_mounts = container.get('volumeMounts', [])
|
|
for idx_v, volume_mount in enumerate(volume_mounts):
|
|
if volume_mount['name'] == 'envoy-attachment-shared':
|
|
patches.append({
|
|
"op": "remove",
|
|
"path": f"/spec/containers/{idx}/volumeMounts/{idx_v}"
|
|
})
|
|
app.logger.debug(f"Removed volumeMount: {patches[-1]}")
|
|
if container['name'] == 'open-appsec-nano-agent':
|
|
patches.append({
|
|
"op": "remove",
|
|
"path": f"/spec/containers/{idx}"
|
|
})
|
|
app.logger.debug(f"Removed sidecar container patch: {patches[-1]}")
|
|
|
|
# Remove the volume if it exists
|
|
if volume_exist:
|
|
for idx, volume in enumerate(volumes):
|
|
if volume['name'] == 'envoy-attachment-shared':
|
|
patches.append({
|
|
"op": "remove",
|
|
"path": f"/spec/volumes/{idx}"
|
|
})
|
|
app.logger.debug(f"Removed volume patch: {patches[-1]}")
|
|
break # Stop once we find and remove the target container
|
|
|
|
else:
|
|
app.logger.debug("Before if: Sidecar 'open-appsec-nano-agent' does not exist. Preparing to add it.")
|
|
|
|
# Define the sidecar container
|
|
sidecar = get_sidecar_container()
|
|
|
|
# Define the init container()
|
|
init_container = get_init_container()
|
|
|
|
# Define the volume mount for istio-proxy
|
|
volume_mount = get_volume_mount()
|
|
|
|
# Define the volume
|
|
volume_def = get_volume_definition()
|
|
|
|
if ISTIO_CONTAINER_NAME:
|
|
add_env_if_not_exist(containers, ISTIO_CONTAINER_NAME, patches)
|
|
add_env_variable_value_from(containers, ISTIO_CONTAINER_NAME, 'OPENAPPSEC_UID', None, patches, value_from={"fieldRef": {"fieldPath": "metadata.uid"}})
|
|
if LIBRARY_PATH_VALUE:
|
|
add_env_variable(containers, ISTIO_CONTAINER_NAME, 'LD_LIBRARY_PATH', LIBRARY_PATH_VALUE, patches)
|
|
if CONCURRENCY_CALC_VALUE:
|
|
add_env_variable(containers, ISTIO_CONTAINER_NAME, 'CONCURRENCY_CALC', CONCURRENCY_CALC_VALUE, patches)
|
|
if CONFIG_PORT_VALUE:
|
|
add_env_variable(containers, ISTIO_CONTAINER_NAME, 'CONFIG_PORT', CONFIG_PORT_VALUE, patches)
|
|
if CONCURRENCY_NUMBER_VALUE:
|
|
add_env_variable(containers, ISTIO_CONTAINER_NAME, 'CONCURRENCY_NUMBER', CONCURRENCY_NUMBER_VALUE, patches)
|
|
else:
|
|
app.logger.debug("ISTIO_CONTAINER_NAME skipping environment variable addition")
|
|
|
|
# Add the sidecar container
|
|
if not sidecar_exists:
|
|
|
|
# Add shareProcessNamespace if not already set
|
|
patches.append({
|
|
"op": "add",
|
|
"path": "/spec/shareProcessNamespace",
|
|
"value": True
|
|
})
|
|
app.logger.debug("Added shareProcessNamespace patch")
|
|
|
|
patches.append({
|
|
"op": "add",
|
|
"path": "/spec/containers/-",
|
|
"value": sidecar
|
|
})
|
|
app.logger.debug("Added sidecar container patch: %s", patches[-1])
|
|
|
|
# Add the volume mount to istio-proxy container (assumes istio-proxy is first container)
|
|
patches.append({
|
|
"op": "add",
|
|
"path": "/spec/containers/0/volumeMounts/-",
|
|
"value": volume_mount
|
|
})
|
|
app.logger.debug("Added volume mount patch to istio-proxy: %s", patches[-1])
|
|
|
|
# Add the new volume definition
|
|
for volume in volume_def:
|
|
patches.append({
|
|
"op": "add",
|
|
"path": "/spec/volumes/-",
|
|
"value": volume
|
|
})
|
|
app.logger.debug("Added volume definition patch: %s", patches[-1])
|
|
|
|
if DEPLOY_FILTER and SELECTOR_LABEL_NAME and SELECTOR_LABEL_VALUE:
|
|
RELEASE_NAME = os.getenv('RELEASE_NAME', 'openappsec-waf-injected')
|
|
envoy_filter_name = RELEASE_NAME + "-waf-filter"
|
|
create_or_update_envoy_filter(envoy_filter_name, namespace, SELECTOR_LABEL_NAME, SELECTOR_LABEL_VALUE)
|
|
else:
|
|
app.logger.debug("Before else: Sidecar 'open-appsec-nano-agent' already exists. Checking for image updates.")
|
|
|
|
# Optionally, update the sidecar image and tag if necessary
|
|
for idx, container in enumerate(containers):
|
|
if container['name'] == 'open-appsec-nano-agent':
|
|
current_image = container.get('image', '')
|
|
app.logger.debug("Current sidecar image: %s", current_image)
|
|
app.logger.debug("Desired sidecar image: %s", FULL_AGENT_IMAGE)
|
|
if current_image != FULL_AGENT_IMAGE:
|
|
patches.append({
|
|
"op": "replace",
|
|
"path": f"/spec/containers/{idx}/image",
|
|
"value": FULL_AGENT_IMAGE
|
|
})
|
|
app.logger.debug(f"Updated sidecar image patch: {patches[-1]}")
|
|
break # Sidecar found and handled
|
|
|
|
if not init_container_exist:
|
|
# Add the initContainer to the pod spec in the deployment
|
|
if 'initContainers' in obj['spec']:
|
|
obj['spec']['initContainers'].append(init_container)
|
|
else:
|
|
obj['spec']['initContainers'] = [init_container]
|
|
|
|
patches.append({
|
|
"op": "add",
|
|
"path": "/spec/initContainers",
|
|
"value": obj['spec']['initContainers']
|
|
})
|
|
else:
|
|
app.logger.debug("Before else: init-container 'prepare-attachment' already exists. Checking for image updates.")
|
|
|
|
# Optionally, update the sidecar image and tag if necessary
|
|
for idx, container in enumerate(containers):
|
|
if container['name'] == 'prepare-attachment':
|
|
current_image = container.get('image', '')
|
|
app.logger.debug("Current init container image: %s", current_image)
|
|
app.logger.debug("Desired init container image: %s", FULL_AGENT_IMAGE)
|
|
if current_image != FULL_AGENT_IMAGE:
|
|
patches.append({
|
|
"op": "replace",
|
|
"path": f"/spec/containers/{idx}/image",
|
|
"value": FULL_AGENT_IMAGE
|
|
})
|
|
app.logger.debug(f"Updated sidecar image patch: {patches[-1]}")
|
|
break # Sidecar found and handled
|
|
|
|
|
|
app.logger.info("Total patches: %s", json.dumps(patches, indent=2))
|
|
|
|
# Prepare the AdmissionReview response
|
|
admission_response = {
|
|
"kind": "AdmissionReview",
|
|
"apiVersion": "admission.k8s.io/v1",
|
|
"response": {
|
|
"uid": uid,
|
|
"allowed": True,
|
|
"patchType": "JSONPatch",
|
|
"patch": base64.b64encode(json.dumps(patches).encode('utf-8')).decode('utf-8')
|
|
}
|
|
}
|
|
app.logger.debug("Sending admission response: %s", json.dumps(admission_response, indent=2))
|
|
|
|
return jsonify(admission_response)
|
|
|
|
if __name__ == '__main__':
|
|
# Configure logger
|
|
configure_logging()
|
|
|
|
# Ensure certificates exist
|
|
secretgen.main()
|
|
if not os.path.exists("/certs/server.crt") or not os.path.exists("/certs/server.key"):
|
|
print("Error: Certificates not found. Exiting...")
|
|
exit(1)
|
|
|
|
cli = sys.modules['flask.cli']
|
|
cli.show_server_banner = lambda *x: None
|
|
|
|
# Run the Flask app with the generated certificates
|
|
app.run(host='0.0.0.0', port=443, ssl_context=('/certs/server.crt', '/certs/server.key'))
|
|
|