feat: Add DiscoveredPolicy adapter

examples/namespaced/net-segment.yaml

@@ -0,0 +1,26 @@
+# SPDX-License-Identifier: Apache-2.0
+# Copyright 2023 Authors of Nimbus
+
+apiVersion: intent.security.nimbus.com/v1alpha1
+kind: SecurityIntent
+metadata:
+  name: network-segmentation
+spec:
+  intent:
+    id: netSegment
+    action: Block # Audit action has no effect here
+    severity: Medium
+    tags:
+      - 5G
+---
+apiVersion: intent.security.nimbus.com/v1alpha1
+kind: SecurityIntentBinding
+metadata:
+  name: network-segmentation-for-ns
+spec:
+  intents:
+    - name: network-segmentation
+  selector:
+    workloadSelector:
+      matchLabels:
+        app: httpd

pkg/adapter/idpool/idpool.go

@@ -19,6 +19,7 @@ const (
 	CocoWorkload              = "cocoWorkload"
 	EnsureTLS                 = "ensureTLS"
 	DenyENAccess              = "denyExternalNetworkAccess"
+	NetworkSegmentation       = "netSegment"
 )
 
 // KaIds are IDs supported by KubeArmor.

pkg/adapter/nimbus-de/.dockerignore

@@ -0,0 +1 @@
+bin/

pkg/adapter/nimbus-de/Dockerfile

@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: Apache-2.0
+# Copyright 2023 Authors of Nimbus
+
+FROM golang:1.22 as builder
+ARG TARGETOS
+ARG TARGETARCH
+
+WORKDIR /nimbus
+
+# relative deps requried by the adapter
+ADD api/ api/
+ADD pkg/ pkg/
+ADD go.mod go.mod
+ADD go.sum go.sum
+
+ARG ADAPTER_DIR=pkg/adapter/nimbus-de
+WORKDIR /nimbus/$ADAPTER_DIR
+
+COPY $ADAPTER_DIR/go.mod go.mod
+# cache deps before building and copying source so that we don't need to re-download as much
+# and so that source changes don't invalidate our downloaded layer
+RUN go mod download
+
+COPY $ADAPTER_DIR/manager manager
+COPY $ADAPTER_DIR/watcher watcher
+COPY $ADAPTER_DIR/main.go main.go
+
+# Build
+# the GOARCH has not a default value to allow the binary be built according to the host where the command
+# was called. For example, if we call make docker-build in a local env which has the Apple Silicon M1 SO
+# the docker BUILDPLATFORM arg will be linux/arm64 when for Apple x86 it will be linux/amd64. Therefore,
+# by leaving it empty we can ensure that the container and binary shipped on it will have the same platform.
+RUN CGO_ENABLED=0 GOOS=${TARGETOS:-linux} GOARCH=${TARGETARCH} go build -ldflags="-s" -o bin/nimbus-de main.go
+
+FROM gcr.io/distroless/static:nonroot
+WORKDIR /
+COPY --from=builder /nimbus/pkg/adapter/nimbus-de/bin/nimbus-de .
+USER 65532:65532
+
+ENTRYPOINT ["/nimbus-de"]

pkg/adapter/nimbus-de/Makefile

@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: Apache-2.0
+# Copyright 2023 Authors of Nimbus
+
+# Image URL to use all building/pushing image targets
+IMG ?= 5gsec/nimbus-de
+# Image Tag to use all building/pushing image targets
+TAG ?= latest
+
+CONTAINER_TOOL ?= docker
+BINARY ?= bin/nimbus-de
+CONTROLLER_TOOLS_VERSION ?= v0.14.0
+LOCALBIN ?= $(shell pwd)/bin
+$(LOCALBIN):
+	mkdir -p $(LOCALBIN)
+CONTROLLER_GEN ?= $(LOCALBIN)/controller-gen
+
+.PHONY: help
+help: ## Display this help.
+	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make \033[36m<target>\033[0m\n"} /^[a-zA-Z_0-9-]+:.*?##/ { printf "  \033[36m%-15s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(MAKEFILE_LIST)
+
+build: ## Build nimbus-de executable.
+	@go build -ldflags="-s" -o ${BINARY}  main.go
+
+run: build ## Run nimbus-de.
+	@./${BINARY}
+
+.PHONY: docker-build
+docker-build: ## Build nimbus-de container image.
+	$(CONTAINER_TOOL) build -t ${IMG}:${TAG} --build-arg VERSION=${TAG} -f ./Dockerfile ../../../
+
+.PHONY: docker-push
+docker-push: ## Push nimbus-de container image.
+	$(CONTAINER_TOOL) push ${IMG}:${TAG}
+
+PLATFORMS ?= linux/arm64,linux/amd64
+.PHONY: docker-buildx
+docker-buildx: ## Build and push container image for cross-platform support
+	sed -e '1 s/\(^FROM\)/FROM --platform=\$$\{BUILDPLATFORM\}/; t' -e ' 1,// s//FROM --platform=\$$\{BUILDPLATFORM\}/' Dockerfile > Dockerfile.cross
+	- $(CONTAINER_TOOL) buildx create --name project-v3-builder
+	$(CONTAINER_TOOL) buildx use project-v3-builder
+	- $(CONTAINER_TOOL) buildx build --push --platform=$(PLATFORMS) --build-arg VERSION=${TAG} --tag ${IMG}:${TAG} -f Dockerfile.cross ../../../ || { $(CONTAINER_TOOL) buildx rm project-v3-builder; rm Dockerfile.cross; exit 1; }
+	- $(CONTAINER_TOOL) buildx rm project-v3-builder
+	rm Dockerfile.cross
+
+.PHONY: manifests
+manifests: controller-gen ## Generate ClusterRole.
+	$(CONTROLLER_GEN) rbac:roleName=nimbus-de-clusterrole paths="./..." output:dir=../../../deployments/nimbus-de/templates/
+
+.PHONY: controller-gen
+controller-gen: $(CONTROLLER_GEN) ## Download controller-gen locally if necessary. If wrong version is installed, it will be overwritten.
+$(CONTROLLER_GEN): $(LOCALBIN)
+	test -s $(LOCALBIN)/controller-gen && $(LOCALBIN)/controller-gen --version | grep -q $(CONTROLLER_TOOLS_VERSION) || \
+	GOBIN=$(LOCALBIN) go install sigs.k8s.io/controller-tools/cmd/controller-gen@$(CONTROLLER_TOOLS_VERSION)

pkg/adapter/nimbus-de/go.mod

@@ -0,0 +1,122 @@
+module github.com/5GSEC/nimbus/pkg/adapter/nimbus-de
+
+go 1.22.3
+
+require (
+	github.com/5GSEC/nimbus v1.0.1
+	github.com/accuknox/dev2/dsp/pkg/DiscoveredPolicy v1.28.0
+	github.com/cilium/cilium v1.15.7
+	github.com/go-logr/logr v1.4.2
+	github.com/kubearmor/KubeArmor/pkg/KubeArmorController v0.0.0-20240109175053-214237906794
+	k8s.io/api v0.30.1
+	k8s.io/apimachinery v0.30.1
+	k8s.io/client-go v0.30.1
+	sigs.k8s.io/controller-runtime v0.18.4
+)
+
+require (
+	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/blang/semver/v4 v4.0.0 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/cilium/ebpf v0.12.3 // indirect
+	github.com/cilium/proxy v0.0.0-20231202123106-38b645b854f3 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/emicklei/go-restful/v3 v3.12.0 // indirect
+	github.com/evanphx/json-patch/v5 v5.9.0 // indirect
+	github.com/fsnotify/fsnotify v1.7.0 // indirect
+	github.com/go-logr/stdr v1.2.2 // indirect
+	github.com/go-logr/zapr v1.3.0 // indirect
+	github.com/go-ole/go-ole v1.2.6 // indirect
+	github.com/go-openapi/analysis v0.21.4 // indirect
+	github.com/go-openapi/errors v0.20.4 // indirect
+	github.com/go-openapi/jsonpointer v0.21.0 // indirect
+	github.com/go-openapi/jsonreference v0.21.0 // indirect
+	github.com/go-openapi/loads v0.21.2 // indirect
+	github.com/go-openapi/runtime v0.26.2 // indirect
+	github.com/go-openapi/spec v0.20.11 // indirect
+	github.com/go-openapi/strfmt v0.21.9 // indirect
+	github.com/go-openapi/swag v0.23.0 // indirect
+	github.com/go-openapi/validate v0.22.3 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
+	github.com/google/gnostic-models v0.6.9-0.20230804172637-c7be7c783f49 // indirect
+	github.com/google/go-cmp v0.6.0 // indirect
+	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/google/gopacket v1.1.19 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
+	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/imdario/mergo v0.3.16 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/lufia/plan9stats v0.0.0-20211012122336-39d0f177ccd0 // indirect
+	github.com/magiconair/properties v1.8.7 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/oklog/ulid v1.3.1 // indirect
+	github.com/opentracing/opentracing-go v1.2.1-0.20220228012449-10b1cf09e00b // indirect
+	github.com/pelletier/go-toml/v2 v2.1.0 // indirect
+	github.com/petermattis/goid v0.0.0-20180202154549-b0b1615b78e5 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/power-devops/perfstat v0.0.0-20210106213030-5aafc221ea8c // indirect
+	github.com/prometheus/client_golang v1.19.1 // indirect
+	github.com/prometheus/client_model v0.6.1 // indirect
+	github.com/prometheus/common v0.53.0 // indirect
+	github.com/prometheus/procfs v0.15.0 // indirect
+	github.com/rogpeppe/go-internal v1.11.0 // indirect
+	github.com/sagikazarmark/locafero v0.4.0 // indirect
+	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
+	github.com/sasha-s/go-deadlock v0.3.1 // indirect
+	github.com/shirou/gopsutil/v3 v3.23.5 // indirect
+	github.com/sirupsen/logrus v1.9.3 // indirect
+	github.com/sourcegraph/conc v0.3.0 // indirect
+	github.com/spf13/afero v1.11.0 // indirect
+	github.com/spf13/cast v1.6.0 // indirect
+	github.com/spf13/cobra v1.8.0 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/spf13/viper v1.18.1 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
+	github.com/tklauser/go-sysconf v0.3.11 // indirect
+	github.com/tklauser/numcpus v0.6.0 // indirect
+	github.com/vishvananda/netlink v1.2.1-beta.2.0.20240524165444-4d4ba1473f21 // indirect
+	github.com/vishvananda/netns v0.0.4 // indirect
+	github.com/yusufpapurcu/wmi v1.2.3 // indirect
+	go.mongodb.org/mongo-driver v1.13.1 // indirect
+	go.opentelemetry.io/otel v1.21.0 // indirect
+	go.opentelemetry.io/otel/metric v1.21.0 // indirect
+	go.opentelemetry.io/otel/trace v1.21.0 // indirect
+	go.uber.org/dig v1.17.1 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	go.uber.org/zap v1.27.0 // indirect
+	go4.org/netipx v0.0.0-20231129151722-fdeea329fbba // indirect
+	golang.org/x/exp v0.0.0-20240506185415-9bf2ced13842 // indirect
+	golang.org/x/net v0.25.0 // indirect
+	golang.org/x/oauth2 v0.20.0 // indirect
+	golang.org/x/sync v0.7.0 // indirect
+	golang.org/x/sys v0.20.0 // indirect
+	golang.org/x/term v0.20.0 // indirect
+	golang.org/x/text v0.15.0 // indirect
+	golang.org/x/time v0.5.0 // indirect
+	gomodules.xyz/jsonpatch/v2 v2.4.0 // indirect
+	google.golang.org/protobuf v1.34.1 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/ini.v1 v1.67.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	k8s.io/apiextensions-apiserver v0.30.1 // indirect
+	k8s.io/klog/v2 v2.120.1 // indirect
+	k8s.io/kube-openapi v0.0.0-20240521193020-835d969ad83a // indirect
+	k8s.io/utils v0.0.0-20240502163921-fe8a2dddb1d0 // indirect
+	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.4.1 // indirect
+	sigs.k8s.io/yaml v1.4.0 // indirect
+)