auth-proxy: proxies only authenticated requests to upstream, redirects to login page otherwise (#103)

* auth-proxy: inspects authenticated user

* ingress: chart and use in rpuppy

* auth-proxy: make it optional in rpuppy

* kratos: whitelist env pub/priv domains for auth return_to addr

* url-shortener: put behind auth-proxy

* pihole: replace oauth2-client with auth-proxy

* auth-proxy: fix upstream uri generation

* pihole: remove old chart using oauth2

* auth-proxy: remove temporary values file

* url-shortener: check x-user header for authentication

* auth: fix allowed_return_urls list

* auth-proxy: fix current address generation logic

---------

Co-authored-by: Giorgi Lekveishvili <lekva@gl-mbp-m1-max.local>
diff --git a/charts/pihole/templates/service-dns-tcp.yaml b/charts/pihole/templates/service-dns-tcp.yaml
new file mode 100644
index 0000000..9206260
--- /dev/null
+++ b/charts/pihole/templates/service-dns-tcp.yaml
@@ -0,0 +1,87 @@
+{{- if not .Values.serviceDns.mixedService }}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "pihole.fullname" . }}-dns-tcp
+  labels:
+    app: {{ template "pihole.name" . }}
+    chart: {{ template "pihole.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+{{- if .Values.serviceDns.annotations }}
+  annotations:
+{{ toYaml .Values.serviceDns.annotations | indent 4 }}
+{{- end }}
+spec:
+  type: {{ .Values.serviceDns.type }}
+  {{- if and (.Values.dualStack.enabled) (not (eq .Values.serviceDns.type "LoadBalancer")) }}
+  ipFamilies:
+  - IPv4
+  - IPv6
+  ipFamilyPolicy: PreferDualStack
+  {{- end }}
+  {{- if .Values.serviceDns.loadBalancerIP }}
+  loadBalancerIP: {{ .Values.serviceDns.loadBalancerIP }}
+  {{- end }}
+  {{- if or (eq .Values.serviceDns.type "NodePort") (eq .Values.serviceDns.type "LoadBalancer") }}
+  externalTrafficPolicy: {{ .Values.serviceDns.externalTrafficPolicy }}
+  {{- end }}
+  ports:
+    - port: {{ .Values.serviceDns.port }}
+      targetPort: dns
+      {{- if and (.Values.serviceDns.nodePort) (eq .Values.serviceDns.type "NodePort") }}
+      nodePort: {{ .Values.serviceDns.nodePort }}
+      {{- end }}
+      protocol: TCP
+      name: dns
+    {{- if .Values.monitoring.sidecar.enabled }}
+    - port: {{ .Values.monitoring.sidecar.port }}
+      targetPort: prometheus
+      protocol: TCP
+      name: prometheus
+    {{- end }}
+  selector:
+    app: {{ template "pihole.name" . }}
+    release: {{ .Release.Name }}
+---
+{{- if and (.Values.dualStack.enabled) (eq .Values.serviceDns.type "LoadBalancer") -}}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "pihole.fullname" . }}-dns-tcp-ipv6
+  labels:
+    app: {{ template "pihole.name" . }}
+    chart: {{ template "pihole.chart" . }}
+    release: {{ .Release.Name }}
+    heritage: {{ .Release.Service }}
+{{- if .Values.serviceDns.annotations }}
+  annotations:
+{{ toYaml .Values.serviceDns.annotations | indent 4 }}
+{{- end }}
+spec:
+  type: {{ .Values.serviceDns.type }}
+  ipFamilies:
+  - IPv6
+  ipFamilyPolicy: SingleStack
+  {{- if .Values.serviceDns.loadBalancerIPv6 }}
+  loadBalancerIP: {{ .Values.serviceDns.loadBalancerIPv6 }}
+  {{- end }}
+  {{- if or (eq .Values.serviceDns.type "NodePort") (eq .Values.serviceDns.type "LoadBalancer") }}
+  externalTrafficPolicy: {{ .Values.serviceDns.externalTrafficPolicy }}
+  {{- end }}
+  ports:
+    - port: {{ .Values.serviceDns.port }}
+      targetPort: dns
+      protocol: TCP
+      name: dns
+    {{- if .Values.monitoring.sidecar.enabled }}
+    - port: {{ .Values.monitoring.sidecar.port }}
+      targetPort: prometheus
+      protocol: TCP
+      name: prometheus
+    {{- end }}
+  selector:
+    app: {{ template "pihole.name" . }}
+    release: {{ .Release.Name }}
+{{- end }}
+{{- end }}