#!/bin/bash
# shellcheck disable=SC2034,SC2153,SC2155,SC2164

# Copyright Istio Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

####################################################################################################
# WARNING: THIS IS AN AUTO-GENERATED FILE, DO NOT EDIT. PLEASE MODIFY THE ORIGINAL MARKDOWN FILE:
#          docs/tasks/traffic-management/ingress/secure-ingress/index.md
####################################################################################################

snip_before_you_begin_1() {
curl --version | grep LibreSSL
}

! read -r -d '' snip_before_you_begin_1_out <<\ENDSNIP
curl 7.54.0 (x86_64-apple-darwin17.0) libcurl/7.54.0 LibreSSL/2.0.20 zlib/1.2.11 nghttp2/1.24.0
ENDSNIP

snip_generate_client_and_server_certificates_and_keys_1() {
openssl req -x509 -sha256 -nodes -days 365 -newkey rsa:2048 -subj '/O=example Inc./CN=example.com' -keyout example.com.key -out example.com.crt
}

snip_generate_client_and_server_certificates_and_keys_2() {
openssl req -out httpbin.example.com.csr -newkey rsa:2048 -nodes -keyout httpbin.example.com.key -subj "/CN=httpbin.example.com/O=httpbin organization"
openssl x509 -req -sha256 -days 365 -CA example.com.crt -CAkey example.com.key -set_serial 0 -in httpbin.example.com.csr -out httpbin.example.com.crt
}

snip_configure_a_tls_ingress_gateway_for_a_single_host_1() {
kubectl create -n istio-system secret tls httpbin-credential --key=httpbin.example.com.key --cert=httpbin.example.com.crt
}

snip_configure_a_tls_ingress_gateway_for_a_single_host_2() {
cat <<EOF | kubectl apply -f -
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
  name: mygateway
spec:
  selector:
    istio: ingressgateway # use istio default ingress gateway
  servers:
  - port:
      number: 443
      name: https
      protocol: HTTPS
    tls:
      mode: SIMPLE
      credentialName: httpbin-credential # must be the same as secret
    hosts:
    - httpbin.example.com
EOF
}

snip_configure_a_tls_ingress_gateway_for_a_single_host_3() {
cat <<EOF | kubectl apply -f -
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: httpbin
spec:
  hosts:
  - "httpbin.example.com"
  gateways:
  - mygateway
  http:
  - match:
    - uri:
        prefix: /status
    - uri:
        prefix: /delay
    route:
    - destination:
        port:
          number: 8000
        host: httpbin
EOF
}

snip_configure_a_tls_ingress_gateway_for_a_single_host_4() {
curl -v -HHost:httpbin.example.com --resolve "httpbin.example.com:$SECURE_INGRESS_PORT:$INGRESS_HOST" \
--cacert example.com.crt "https://httpbin.example.com:$SECURE_INGRESS_PORT/status/418"
}

snip_configure_a_tls_ingress_gateway_for_a_single_host_5() {
kubectl -n istio-system delete secret httpbin-credential
}

snip_configure_a_tls_ingress_gateway_for_a_single_host_6() {
mkdir new_certificates
openssl req -x509 -sha256 -nodes -days 365 -newkey rsa:2048 -subj '/O=example Inc./CN=example.com' -keyout new_certificates/example.com.key -out new_certificates/example.com.crt
openssl req -out new_certificates/httpbin.example.com.csr -newkey rsa:2048 -nodes -keyout new_certificates/httpbin.example.com.key -subj "/CN=httpbin.example.com/O=httpbin organization"
openssl x509 -req -sha256 -days 365 -CA new_certificates/example.com.crt -CAkey new_certificates/example.com.key -set_serial 0 -in new_certificates/httpbin.example.com.csr -out new_certificates/httpbin.example.com.crt
kubectl create -n istio-system secret tls httpbin-credential \
--key=new_certificates/httpbin.example.com.key \
--cert=new_certificates/httpbin.example.com.crt
}

snip_configure_a_tls_ingress_gateway_for_a_single_host_7() {
curl -v -HHost:httpbin.example.com --resolve "httpbin.example.com:$SECURE_INGRESS_PORT:$INGRESS_HOST" \
--cacert new_certificates/example.com.crt "https://httpbin.example.com:$SECURE_INGRESS_PORT/status/418"
}

! read -r -d '' snip_configure_a_tls_ingress_gateway_for_a_single_host_7_out <<\ENDSNIP
...
HTTP/2 418
...
    -=[ teapot ]=-

       _...._
     .'  _ _ `.
    | ."` ^ `". _,
    \_;`"---"`|//
      |       ;/
      \_     _/
        `"""`
ENDSNIP

snip_configure_a_tls_ingress_gateway_for_a_single_host_8() {
curl -v -HHost:httpbin.example.com --resolve "httpbin.example.com:$SECURE_INGRESS_PORT:$INGRESS_HOST" \
--cacert example.com.crt "https://httpbin.example.com:$SECURE_INGRESS_PORT/status/418"
}

! read -r -d '' snip_configure_a_tls_ingress_gateway_for_a_single_host_8_out <<\ENDSNIP
...
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (OUT), TLS alert, Server hello (2):
* curl: (35) error:04FFF06A:rsa routines:CRYPTO_internal:block type is not 01
ENDSNIP

snip_configure_a_tls_ingress_gateway_for_multiple_hosts_1() {
kubectl -n istio-system delete secret httpbin-credential
kubectl create -n istio-system secret tls httpbin-credential \
--key=httpbin.example.com.key \
--cert=httpbin.example.com.crt
}

snip_configure_a_tls_ingress_gateway_for_multiple_hosts_2() {
cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: Service
metadata:
  name: helloworld-v1
  labels:
    app: helloworld-v1
spec:
  ports:
  - name: http
    port: 5000
  selector:
    app: helloworld-v1
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: helloworld-v1
spec:
  replicas: 1
  selector:
    matchLabels:
      app: helloworld-v1
      version: v1
  template:
    metadata:
      labels:
        app: helloworld-v1
        version: v1
    spec:
      containers:
      - name: helloworld
        image: istio/examples-helloworld-v1
        resources:
          requests:
            cpu: "100m"
        imagePullPolicy: IfNotPresent #Always
        ports:
        - containerPort: 5000
EOF
}

snip_configure_a_tls_ingress_gateway_for_multiple_hosts_3() {
openssl req -out helloworld-v1.example.com.csr -newkey rsa:2048 -nodes -keyout helloworld-v1.example.com.key -subj "/CN=helloworld-v1.example.com/O=helloworld organization"
openssl x509 -req -sha256 -days 365 -CA example.com.crt -CAkey example.com.key -set_serial 1 -in helloworld-v1.example.com.csr -out helloworld-v1.example.com.crt
}

snip_configure_a_tls_ingress_gateway_for_multiple_hosts_4() {
kubectl create -n istio-system secret tls helloworld-credential --key=helloworld-v1.example.com.key --cert=helloworld-v1.example.com.crt
}

snip_configure_a_tls_ingress_gateway_for_multiple_hosts_5() {
cat <<EOF | kubectl apply -f -
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
  name: mygateway
spec:
  selector:
    istio: ingressgateway # use istio default ingress gateway
  servers:
  - port:
      number: 443
      name: https-httpbin
      protocol: HTTPS
    tls:
      mode: SIMPLE
      credentialName: httpbin-credential
    hosts:
    - httpbin.example.com
  - port:
      number: 443
      name: https-helloworld
      protocol: HTTPS
    tls:
      mode: SIMPLE
      credentialName: helloworld-credential
    hosts:
    - helloworld-v1.example.com
EOF
}

snip_configure_a_tls_ingress_gateway_for_multiple_hosts_6() {
cat <<EOF | kubectl apply -f -
apiVersion: networking.istio.io/v1alpha3
kind: VirtualService
metadata:
  name: helloworld-v1
spec:
  hosts:
  - helloworld-v1.example.com
  gateways:
  - mygateway
  http:
  - match:
    - uri:
        exact: /hello
    route:
    - destination:
        host: helloworld-v1
        port:
          number: 5000
EOF
}

snip_configure_a_tls_ingress_gateway_for_multiple_hosts_7() {
curl -v -HHost:helloworld-v1.example.com --resolve "helloworld-v1.example.com:$SECURE_INGRESS_PORT:$INGRESS_HOST" \
--cacert example.com.crt "https://helloworld-v1.example.com:$SECURE_INGRESS_PORT/hello"
}

! read -r -d '' snip_configure_a_tls_ingress_gateway_for_multiple_hosts_7_out <<\ENDSNIP
HTTP/2 200
ENDSNIP

snip_configure_a_tls_ingress_gateway_for_multiple_hosts_8() {
curl -v -HHost:httpbin.example.com --resolve "httpbin.example.com:$SECURE_INGRESS_PORT:$INGRESS_HOST" \
--cacert example.com.crt "https://httpbin.example.com:$SECURE_INGRESS_PORT/status/418"
}

! read -r -d '' snip_configure_a_tls_ingress_gateway_for_multiple_hosts_8_out <<\ENDSNIP
...
    -=[ teapot ]=-

       _...._
     .'  _ _ `.
    | ."` ^ `". _,
    \_;`"---"`|//
      |       ;/
      \_     _/
        `"""`
ENDSNIP

snip_configure_a_mutual_tls_ingress_gateway_1() {
kubectl -n istio-system delete secret httpbin-credential
kubectl create -n istio-system secret generic httpbin-credential --from-file=tls.key=httpbin.example.com.key \
--from-file=tls.crt=httpbin.example.com.crt --from-file=ca.crt=example.com.crt
}

snip_configure_a_mutual_tls_ingress_gateway_2() {
cat <<EOF | kubectl apply -f -
apiVersion: networking.istio.io/v1alpha3
kind: Gateway
metadata:
 name: mygateway
spec:
 selector:
   istio: ingressgateway # use istio default ingress gateway
 servers:
 - port:
     number: 443
     name: https
     protocol: HTTPS
   tls:
     mode: MUTUAL
     credentialName: httpbin-credential # must be the same as secret
   hosts:
   - httpbin.example.com
EOF
}

snip_configure_a_mutual_tls_ingress_gateway_3() {
curl -v -HHost:httpbin.example.com --resolve "httpbin.example.com:$SECURE_INGRESS_PORT:$INGRESS_HOST" \
--cacert example.com.crt "https://httpbin.example.com:$SECURE_INGRESS_PORT/status/418"
}

! read -r -d '' snip_configure_a_mutual_tls_ingress_gateway_3_out <<\ENDSNIP
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.3 (IN), TLS handshake, Encrypted Extensions (8):
* TLSv1.3 (IN), TLS handshake, Request CERT (13):
* TLSv1.3 (IN), TLS handshake, Certificate (11):
* TLSv1.3 (IN), TLS handshake, CERT verify (15):
* TLSv1.3 (IN), TLS handshake, Finished (20):
* TLSv1.3 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.3 (OUT), TLS handshake, Certificate (11):
* TLSv1.3 (OUT), TLS handshake, Finished (20):
* TLSv1.3 (IN), TLS alert, unknown (628):
* OpenSSL SSL_read: error:1409445C:SSL routines:ssl3_read_bytes:tlsv13 alert certificate required, errno 0
ENDSNIP

snip_configure_a_mutual_tls_ingress_gateway_4() {
openssl req -out client.example.com.csr -newkey rsa:2048 -nodes -keyout client.example.com.key -subj "/CN=client.example.com/O=client organization"
openssl x509 -req -sha256 -days 365 -CA example.com.crt -CAkey example.com.key -set_serial 1 -in client.example.com.csr -out client.example.com.crt
}

snip_configure_a_mutual_tls_ingress_gateway_5() {
curl -v -HHost:httpbin.example.com --resolve "httpbin.example.com:$SECURE_INGRESS_PORT:$INGRESS_HOST" \
--cacert example.com.crt --cert client.example.com.crt --key client.example.com.key \
"https://httpbin.example.com:$SECURE_INGRESS_PORT/status/418"
}

! read -r -d '' snip_configure_a_mutual_tls_ingress_gateway_5_out <<\ENDSNIP
...
    -=[ teapot ]=-

       _...._
     .'  _ _ `.
    | ."` ^ `". _,
    \_;`"---"`|//
      |       ;/
      \_     _/
        `"""`
ENDSNIP

snip_troubleshooting_1() {
kubectl get svc -n istio-system
echo "INGRESS_HOST=$INGRESS_HOST, SECURE_INGRESS_PORT=$SECURE_INGRESS_PORT"
}

snip_troubleshooting_2() {
kubectl logs -n istio-system "$(kubectl get pod -l istio=ingressgateway \
-n istio-system -o jsonpath='{.items[0].metadata.name}')"
}

snip_troubleshooting_3() {
kubectl -n istio-system get secrets
}

snip_troubleshooting_4() {
kubectl logs -n istio-system "$(kubectl get pod -l istio=ingressgateway \
-n istio-system -o jsonpath='{.items[0].metadata.name}')"
}

snip_cleanup_1() {
kubectl delete gateway mygateway
kubectl delete virtualservice httpbin
kubectl delete --ignore-not-found=true -n istio-system secret httpbin-credential \
helloworld-credential
kubectl delete --ignore-not-found=true virtualservice helloworld-v1
}

snip_cleanup_2() {
rm -rf example.com.crt example.com.key httpbin.example.com.crt httpbin.example.com.key httpbin.example.com.csr helloworld-v1.example.com.crt helloworld-v1.example.com.key helloworld-v1.example.com.csr client.example.com.crt client.example.com.csr client.example.com.key ./new_certificates
}

snip_cleanup_3() {
kubectl delete deployment --ignore-not-found=true httpbin helloworld-v1
kubectl delete service --ignore-not-found=true httpbin helloworld-v1
}