initial commit

deploy/helm/rsh-backend/Chart.yaml

@@ -0,0 +1,6 @@
+apiVersion: v2
+name: rsh-backend
+description: rsh reverse-shell backend relay
+type: application
+version: 0.1.0
+appVersion: "0.1.0"

deploy/helm/rsh-backend/templates/_helpers.tpl

@@ -0,0 +1,37 @@
+{{- define "rsh-backend.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{- define "rsh-backend.fullname" -}}
+{{- if .Values.fullnameOverride -}}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- $name := default .Chart.Name .Values.nameOverride -}}
+{{- if contains $name .Release.Name -}}
+{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+{{- end -}}
+{{- end -}}
+
+{{- define "rsh-backend.labels" -}}
+app.kubernetes.io/name: {{ include "rsh-backend.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+helm.sh/chart: {{ printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end -}}
+
+{{- define "rsh-backend.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "rsh-backend.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end -}}
+
+{{- define "rsh-backend.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create -}}
+{{- default (include "rsh-backend.fullname" .) .Values.serviceAccount.name -}}
+{{- else -}}
+{{- default "default" .Values.serviceAccount.name -}}
+{{- end -}}
+{{- end -}}

deploy/helm/rsh-backend/templates/deployment.yaml

@@ -0,0 +1,117 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "rsh-backend.fullname" . }}
+  labels:
+    {{- include "rsh-backend.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  strategy:
+    type: Recreate
+  selector:
+    matchLabels:
+      {{- include "rsh-backend.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      labels:
+        {{- include "rsh-backend.selectorLabels" . | nindent 8 }}
+      annotations:
+        {{- if .Values.authorizedKeys }}
+        checksum/authorized-keys: {{ .Values.authorizedKeys | sha256sum }}
+        {{- end }}
+    spec:
+      serviceAccountName: {{ include "rsh-backend.serviceAccountName" . }}
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      {{- if .Values.authorizedKeys }}
+      initContainers:
+        - name: seed-authorized-keys
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          command:
+            - /bin/sh
+            - -c
+            - |
+              set -eu
+              install -m 600 /seed/authorized_keys /var/lib/rsh/authorized_keys
+          volumeMounts:
+            - name: data
+              mountPath: /var/lib/rsh
+            - name: authorized-keys
+              mountPath: /seed
+              readOnly: true
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+      {{- end }}
+      containers:
+        - name: rsh-backend
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: 7777
+              protocol: TCP
+          env:
+            - name: RSH_DATA
+              value: /var/lib/rsh
+            - name: RSH_BIND
+              value: 0.0.0.0:7777
+            {{- range $k, $v := .Values.env }}
+            - name: {{ $k }}
+              value: {{ $v | quote }}
+            {{- end }}
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: http
+            initialDelaySeconds: 5
+            periodSeconds: 10
+          readinessProbe:
+            httpGet:
+              path: /healthz
+              port: http
+            initialDelaySeconds: 2
+            periodSeconds: 5
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+          volumeMounts:
+            - name: data
+              mountPath: /var/lib/rsh
+            - name: tmp
+              mountPath: /tmp
+      volumes:
+        - name: tmp
+          emptyDir: {}
+        - name: data
+        {{- if .Values.persistence.enabled }}
+          persistentVolumeClaim:
+            claimName: {{ include "rsh-backend.fullname" . }}-data
+        {{- else }}
+          emptyDir: {}
+        {{- end }}
+        {{- if .Values.authorizedKeys }}
+        - name: authorized-keys
+          secret:
+            secretName: {{ include "rsh-backend.fullname" . }}-authorized-keys
+            items:
+              - key: authorized_keys
+                path: authorized_keys
+        {{- end }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

deploy/helm/rsh-backend/templates/ingress.yaml

@@ -0,0 +1,33 @@
+{{- if .Values.ingress.enabled }}
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: {{ include "rsh-backend.fullname" . }}
+  labels:
+    {{- include "rsh-backend.labels" . | nindent 4 }}
+  {{- with .Values.ingress.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- if .Values.ingress.className }}
+  ingressClassName: {{ .Values.ingress.className }}
+  {{- end }}
+  {{- if .Values.ingress.tls.enabled }}
+  tls:
+    - hosts:
+        - {{ .Values.ingress.host | quote }}
+      secretName: {{ .Values.ingress.tls.secretName | quote }}
+  {{- end }}
+  rules:
+    - host: {{ .Values.ingress.host | quote }}
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: {{ include "rsh-backend.fullname" . }}
+                port:
+                  number: {{ .Values.service.port }}
+{{- end }}

deploy/helm/rsh-backend/templates/pvc.yaml

@@ -0,0 +1,17 @@
+{{- if .Values.persistence.enabled }}
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: {{ include "rsh-backend.fullname" . }}-data
+  labels:
+    {{- include "rsh-backend.labels" . | nindent 4 }}
+spec:
+  accessModes:
+    - {{ .Values.persistence.accessMode | quote }}
+  resources:
+    requests:
+      storage: {{ .Values.persistence.size | quote }}
+  {{- if .Values.persistence.storageClass }}
+  storageClassName: {{ .Values.persistence.storageClass | quote }}
+  {{- end }}
+{{- end }}

deploy/helm/rsh-backend/templates/secret.yaml

@@ -0,0 +1,12 @@
+{{- if .Values.authorizedKeys }}
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ include "rsh-backend.fullname" . }}-authorized-keys
+  labels:
+    {{- include "rsh-backend.labels" . | nindent 4 }}
+type: Opaque
+stringData:
+  authorized_keys: |
+{{ .Values.authorizedKeys | indent 4 }}
+{{- end }}

deploy/helm/rsh-backend/templates/service.yaml

@@ -0,0 +1,19 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "rsh-backend.fullname" . }}
+  labels:
+    {{- include "rsh-backend.labels" . | nindent 4 }}
+  {{- with .Values.service.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - name: http
+      port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+  selector:
+    {{- include "rsh-backend.selectorLabels" . | nindent 4 }}

deploy/helm/rsh-backend/templates/serviceaccount.yaml

@@ -0,0 +1,12 @@
+{{- if .Values.serviceAccount.create }}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "rsh-backend.serviceAccountName" . }}
+  labels:
+    {{- include "rsh-backend.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+{{- end }}

deploy/helm/rsh-backend/values.yaml

@@ -0,0 +1,55 @@
+image:
+  repository: rsh-backend
+  tag: ""
+  pullPolicy: IfNotPresent
+
+imagePullSecrets: []
+
+replicaCount: 1
+
+env:
+  RSH_LOG: info
+
+service:
+  type: ClusterIP
+  port: 7777
+  annotations: {}
+
+ingress:
+  enabled: false
+  className: ""
+  annotations: {}
+  host: rsh.example.com
+  tls:
+    enabled: false
+    secretName: ""
+
+persistence:
+  enabled: true
+  size: 1Gi
+  storageClass: ""
+  accessMode: ReadWriteOnce
+
+authorizedKeys: ""
+
+resources: {}
+
+nodeSelector: {}
+tolerations: []
+affinity: {}
+
+podSecurityContext:
+  fsGroup: 10001
+securityContext:
+  runAsNonRoot: true
+  runAsUser: 10001
+  readOnlyRootFilesystem: true
+  allowPrivilegeEscalation: false
+  capabilities:
+    drop:
+      - ALL
+
+serviceAccount:
+  create: true
+  name: ""
+  annotations: {}