Merge pull request envoyproxy#1 from jcchavezs/adds_code

chore: builds wasm proxy filter.

.github/workflows/test.yaml

@@ -0,0 +1,63 @@
+name: CI check
+on:
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - "**/*.md"
+      - "LICENSE"
+  pull_request:
+
+jobs:
+  test:
+    runs-on: ubuntu-20.04
+    steps:
+      # Set fetch-depth: 0 to fetch commit history and tags for use in version calculation
+      - name: Check out code
+        uses: actions/checkout@v2.3.4
+        with:
+          fetch-depth: 0
+          submodules: true
+
+      - name: Install Go
+        uses: actions/setup-go@v1
+        with:
+          go-version: 1.18.1
+
+      - name: Run tests
+        shell: bash
+        run: make test
+
+  build:
+    needs: [test]
+    runs-on: ubuntu-20.04
+    container:
+      image: tinygo/tinygo:0.23.0
+    steps:
+      # submodule needs .git folder, which is missing without installing a newer git command
+      # https://github.com/actions/checkout/issues/335
+      - name: "Install latest `git`"
+        run: |
+          apt purge git -y
+          apt-get update && apt-get install -y software-properties-common make
+          add-apt-repository ppa:git-core/ppa -y
+          # apt update fails to fetch some repo due to cert failure. Skip them.
+          apt update || true; apt install -y --no-install-recommends \
+              git \
+          && apt clean \
+          && rm -rf /var/lib/apt/lists/*
+
+      - name: Check out code
+        uses: actions/checkout@v2.3.4
+        with:
+          fetch-depth: 0
+          submodules: true
+
+      - name: Install Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: "1.18.1"
+
+      - name: Build WASM filter
+        shell: bash
+        run: make build

.gitignore

@@ -0,0 +1 @@
+build

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "coraza"]
+	path = coraza
+	url = git@github.com:jcchavezs/coraza.git

Makefile

@@ -0,0 +1,7 @@
+.PHONY: build
+build:
+	mkdir -p ./build
+	tinygo build -o build/main.wasm -scheduler=asyncify -target=wasi ./main.go
+
+test:
+	go test -tags=proxytest ./...

README.md

@@ -0,0 +1 @@
+# Coraza WASM filter

envoy-config.yaml

@@ -0,0 +1,92 @@
+static_resources:
+  listeners:
+    - name: main
+      address:
+        socket_address:
+          address: 0.0.0.0
+          port_value: 18000
+      filter_chains:
+        - filters:
+            - name: envoy.http_connection_manager
+              typed_config:
+                "@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
+                stat_prefix: ingress_http
+                codec_type: auto
+                route_config:
+                  name: local_route
+                  virtual_hosts:
+                    - name: local_service
+                      domains:
+                        - "*"
+                      routes:
+                        - match:
+                            prefix: "/"
+                          route:
+                            cluster: web_service
+                http_filters:
+                  - name: envoy.filters.http.wasm
+                    typed_config:
+                      "@type": type.googleapis.com/udpa.type.v1.TypedStruct
+                      type_url: type.googleapis.com/envoy.extensions.filters.http.wasm.v3.Wasm
+                      value:
+                        config:
+                          vm_config:
+                            runtime: "envoy.wasm.runtime.v8"
+                            code:
+                              local:
+                                filename: "./build/main.wasm"
+                  - name: envoy.filters.http.router
+                    typed_config:
+                      "@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
+
+    - name: staticreply
+      address:
+        socket_address:
+          address: 127.0.0.1
+          port_value: 8099
+      filter_chains:
+        - filters:
+            - name: envoy.http_connection_manager
+              typed_config:
+                "@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
+                stat_prefix: ingress_http
+                codec_type: auto
+                route_config:
+                  name: local_route
+                  virtual_hosts:
+                    - name: local_service
+                      domains:
+                        - "*"
+                      routes:
+                        - match:
+                            prefix: "/"
+                          direct_response:
+                            status: 200
+                            body:
+                              inline_string: "example body\n"
+                http_filters:
+                  - name: envoy.filters.http.router
+                    typed_config:
+                      "@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
+
+  clusters:
+    - name: web_service
+      connect_timeout: 0.25s
+      type: STATIC
+      lb_policy: ROUND_ROBIN
+      load_assignment:
+        cluster_name: mock_service
+        endpoints:
+          - lb_endpoints:
+              - endpoint:
+                  address:
+                    socket_address:
+                      address: 127.0.0.1
+                      port_value: 8099
+
+admin:
+  access_log_path: "/dev/null"
+  address:
+    socket_address:
+      address: 0.0.0.0
+      port_value: 8001

go.mod

@@ -0,0 +1,26 @@
+module github.com/jcchavezs/coraza-wasm-filter
+
+go 1.17
+
+require (
+	github.com/corazawaf/coraza/v2 v2.0.0
+	github.com/stretchr/testify v1.7.1
+	github.com/tetratelabs/proxy-wasm-go-sdk v0.18.1-0.20220510133519-6240ca761207
+	github.com/tidwall/gjson v1.14.1
+)
+
+require (
+	github.com/cloudflare/ahocorasick v0.0.0-20210425175752-730270c3e184 // indirect
+	github.com/corazawaf/libinjection-go v0.0.0-20220207031228-44e9c4250eb5 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/tidwall/match v1.1.1 // indirect
+	github.com/tidwall/pretty v1.2.0 // indirect
+	go.uber.org/atomic v1.9.0 // indirect
+	go.uber.org/multierr v1.8.0 // indirect
+	go.uber.org/zap v1.21.0 // indirect
+	golang.org/x/net v0.0.0-20220325170049-de3da57026de // indirect
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
+)
+
+replace github.com/corazawaf/coraza/v2 => ./coraza

go.sum

@@ -0,0 +1,84 @@
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+github.com/cloudflare/ahocorasick v0.0.0-20210425175752-730270c3e184/go.mod h1:tGWUZLZp9ajsxUOnHmFFLnqnlKXsCn6GReG4jAD59H0=
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