From 5498a9a87ac59532f8e709fe43be4145614c0532 Mon Sep 17 00:00:00 2001 From: Milos Spasojevic Date: Thu, 28 Sep 2023 23:16:58 +0200 Subject: [PATCH 1/5] correctly support proxy spec for Basic auth, update Smokescreen to v.0.0.4 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The authentication process with an HTTP proxy is described in RFC2616 §14.33 and §14.34 It requires the Proxy to return a Proxy-Authorization response header together with the 407 status code to indicate the type of authorization required This commit implements the spec by requiering the client to use Basic auth Before this fix, .NET's HttpClient refused to send the Proxy-Authorization header Resulting in not being able to use the smokescreen proxy Upgrading Smokescreen to v0.0.4 was required in order to hook into the response handler and add the appropriate header --- go.mod | 12 +++++- go.sum | 112 +++++++++++++++++++++++++++++++++++++++----------------- main.go | 4 +- 3 files changed, 93 insertions(+), 35 deletions(-) diff --git a/go.mod b/go.mod index a5f379d..d71626b 100644 --- a/go.mod +++ b/go.mod @@ -2,4 +2,14 @@ module github.com/superfly/smokescreen go 1.15 -require github.com/stripe/smokescreen v0.0.2 +require ( + github.com/DataDog/datadog-go v4.8.3+incompatible // indirect + github.com/Microsoft/go-winio v0.6.1 // indirect + github.com/armon/go-proxyproto v0.0.0-20210323213023-7e956b284f0a // indirect + github.com/rs/xid v1.5.0 // indirect + github.com/sirupsen/logrus v1.9.3 // indirect + github.com/stripe/goproxy v0.0.0-20230801191332-fabc3ecb7251 // indirect + github.com/stripe/smokescreen v0.0.4 + golang.org/x/tools v0.13.0 // indirect + gopkg.in/yaml.v2 v2.4.0 // indirect +) diff --git a/go.sum b/go.sum index c245ac6..6c08326 100644 --- a/go.sum +++ b/go.sum @@ -1,54 +1,100 @@ -github.com/DataDog/datadog-go v0.0.0-20170427165718-0ddda6bee211 h1:hOSWYZBOWXZwYN+huYLFKsb4f6uohHgpx6cLlAXOqjA= -github.com/DataDog/datadog-go v0.0.0-20170427165718-0ddda6bee211/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ= -github.com/armon/go-proxyproto v0.0.0-20170620220930-48572f11356f h1:5FTBPzFrJqeKm10UPWvw8qU8/CLrS0OAX87PyGkycIc= +github.com/DataDog/datadog-go v4.5.1+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ= +github.com/DataDog/datadog-go v4.8.3+incompatible h1:fNGaYSuObuQb5nzeTQqowRAd9bpDIRRV4/gUtIBjh8Q= +github.com/DataDog/datadog-go v4.8.3+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ= +github.com/Microsoft/go-winio v0.4.17/go.mod h1:JPGBdM1cNvN/6ISo+n8V5iA4v8pBzdOpzfwIujj1a84= +github.com/Microsoft/go-winio v0.6.1 h1:9/kr64B9VUZrLm5YYwbGtUJnMgqWVOdUAXu6Migciow= +github.com/Microsoft/go-winio v0.6.1/go.mod h1:LRdKpFKfdobln8UmuiYcKPot9D2v6svN5+sAH+4kjUM= github.com/armon/go-proxyproto v0.0.0-20170620220930-48572f11356f/go.mod h1:QmP9hvJ91BbJmGVGSbutW19IC0Q9phDCLGaomwTJbgU= +github.com/armon/go-proxyproto v0.0.0-20210323213023-7e956b284f0a h1:AP/vsCIvJZ129pdm9Ek7bH7yutN3hByqsMoNrWAxRQc= +github.com/armon/go-proxyproto v0.0.0-20210323213023-7e956b284f0a/go.mod h1:QmP9hvJ91BbJmGVGSbutW19IC0Q9phDCLGaomwTJbgU= github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= -github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo= -github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/hashicorp/go-cleanhttp v0.0.0-20171218145408-d5fe4b57a186 h1:URgjUo+bs1KwatoNbwG0uCO4dHN4r1jsp4a5AGgHRjo= github.com/hashicorp/go-cleanhttp v0.0.0-20171218145408-d5fe4b57a186/go.mod h1:JpRdi6/HCYpAwUzNwuwqhbovhLtngrth3wmdIIUrZ80= -github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU= -github.com/onsi/ginkgo v1.6.0/go.mod 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h1:vuBzUtMdQeixQj8LVd+/98pzhxNGQoyuPBlsXHOQNO0= -gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I= -gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY= +gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo= +gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= diff --git a/main.go b/main.go index 366e998..5d3edf5 100644 --- a/main.go +++ b/main.go @@ -26,7 +26,9 @@ func main() { fmt.Println("missing environment variable: PROXY_PASSWORD") os.Exit(1) } - + conf.RejectResponseHandler = func(resp *http.Response) { + resp.Header.Set("Proxy-Authenticate", "Basic realm=\"smokescreen\"") + } conf.RoleFromRequest = func(request *http.Request) (string, error) { fail := func(err string) (string, error) { return "", fmt.Errorf(err) } From a656b17fdb8b18e97455b9fd62a5478bca01a0ae Mon Sep 17 00:00:00 2001 From: Milos Spasojevic Date: Tue, 28 Jan 2025 23:51:25 +0100 Subject: [PATCH 2/5] add docker-compose yml --- docker-compose.yml | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 docker-compose.yml diff --git a/docker-compose.yml b/docker-compose.yml new file mode 100644 index 0000000..d2f3d14 --- /dev/null +++ b/docker-compose.yml @@ -0,0 +1,40 @@ +version: "3.8" + +services: + smokescreen: + build: + context: . + dockerfile: Dockerfile + container_name: smokescreen + ports: + - "4750:4750" + environment: + - PROXY_PASSWORD=${PROXY_PASSWORD} + volumes: + - ./acl.yaml:/etc/smokescreen/acl.yaml:ro + restart: unless-stopped + healthcheck: + test: ["CMD", "nc", "-z", "localhost", "4750"] + interval: 30s + timeout: 10s + retries: 3 + start_period: 5s + logging: + driver: "json-file" + options: + max-size: "10m" + max-file: "3" + networks: + - proxy-network + deploy: + resources: + limits: + cpus: "1" + memory: 1G + reservations: + cpus: "0.25" + memory: 256M + +networks: + proxy-network: + driver: bridge From 427b88bea6ca36842bf2b3b08d933b23aacc8bd7 Mon Sep 17 00:00:00 2001 From: Milos Spasojevic Date: Tue, 28 Jan 2025 23:55:51 +0100 Subject: [PATCH 3/5] read from .env --- docker-compose.yml | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/docker-compose.yml b/docker-compose.yml index d2f3d14..5b7800d 100644 --- a/docker-compose.yml +++ b/docker-compose.yml @@ -6,10 +6,10 @@ services: context: . dockerfile: Dockerfile container_name: smokescreen + env_file: + - .env ports: - "4750:4750" - environment: - - PROXY_PASSWORD=${PROXY_PASSWORD} volumes: - ./acl.yaml:/etc/smokescreen/acl.yaml:ro restart: unless-stopped From afe68cab04cbc9a7e6fc0040a8d6e6786cd97260 Mon Sep 17 00:00:00 2001 From: Milos Spasojevic Date: Tue, 28 Jan 2025 23:56:01 +0100 Subject: [PATCH 4/5] update .gitignore --- .gitignore | 2 ++ 1 file changed, 2 insertions(+) diff --git a/.gitignore b/.gitignore index a555378..f1bb0c6 100644 --- a/.gitignore +++ b/.gitignore @@ -1,3 +1,5 @@ fly.toml smokescreen + +.env \ No newline at end of file From 125ad3fb5a26ea0d86e8a1d35922814452178fc8 Mon Sep 17 00:00:00 2001 From: Milos Spasojevic Date: Tue, 28 Jan 2025 23:59:40 +0100 Subject: [PATCH 5/5] update dockerfile --- Dockerfile | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Dockerfile b/Dockerfile index 5530216..da3aeb0 100644 --- a/Dockerfile +++ b/Dockerfile @@ -5,7 +5,9 @@ COPY . . RUN go build . -FROM ubuntu:18.04 +FROM ubuntu:22.04 + +RUN apt-get update && apt-get install -y netcat && rm -rf /var/lib/apt/lists/* COPY --from=builder /go/src/app/smokescreen /usr/local/bin/smokescreen COPY acl.yaml /etc/smokescreen/acl.yaml