change tag to development

Bump docker/login-action from 2.0.0 to 2.1.0

.github/workflows/docker-hub-build-push-on-push.yml

@@ -0,0 +1,56 @@
+name: Build docker image and push to docker hub on release
+
+on:
+  push:
+    branches:
+      - main
+
+env:
+  PLATFORMS: "linux/amd64,linux/arm64,linux/arm/v7"
+  
+jobs:
+  build_and_push:
+    name: Build and push Docker image
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+        
+      - name: Extract tag string
+        id: git
+        shell: bash
+        run: |
+          RELEASE_VERSION="dev-$(date +%s)"
+          echo "::set-output name=image_tag::${RELEASE_VERSION}"
+          echo "Action image_tag=${RELEASE_VERSION}"
+      
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+        
+      - name: Install buildx
+        uses: docker/setup-buildx-action@v2.1.0
+        
+      - name: Login to docker hub
+        uses: docker/login-action@v2.1.0
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v2.1.0
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ github.token }}
+        
+      - name: Build and push ${{ github.repository }}:${{ steps.git.outputs.image_tag }}
+        uses: docker/build-push-action@v3.2.0
+        with:
+          platforms: ${{ env.PLATFORMS }}
+          push: true
+          tags: |
+            ${{ github.repository }}:${{ steps.git.outputs.image_tag }}
+            ${{ github.repository }}:development
+            ghcr.io/${{ github.repository }}:${{ steps.git.outputs.image_tag }}
+            ghcr.io/${{ github.repository }}:development
+

.github/workflows/docker-hub-build-push-on-release.yml

@@ -5,7 +5,7 @@ on:
     types: # This configuration does not affect the page_build event above
       - created
 env:
-  PLATFORMS: "linux/amd64,linux/386,linux/arm64,linux/arm/v7,linux/arm/v6,linux/s390x"
+  PLATFORMS: "linux/amd64,linux/arm64,linux/arm/v7"
   
 jobs:
   build_and_push:
@@ -24,26 +24,26 @@ jobs:
           echo "Action image_tag=${RELEASE_VERSION}"
       
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
+        uses: docker/setup-qemu-action@v2
         
       - name: Install buildx
-        uses: docker/setup-buildx-action@v1.6.0
+        uses: docker/setup-buildx-action@v2.1.0
         
       - name: Login to docker hub
-        uses: docker/login-action@v1.14.1
+        uses: docker/login-action@v2.1.0
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_PASSWORD }}
 
       - name: Login to GitHub Container Registry
-        uses: docker/login-action@v1.14.1
+        uses: docker/login-action@v2.1.0
         with:
           registry: ghcr.io
           username: ${{ github.repository_owner }}
           password: ${{ github.token }}
         
       - name: Build and push ${{ github.repository }}:${{ steps.git.outputs.image_tag }}
-        uses: docker/build-push-action@v2.9.0
+        uses: docker/build-push-action@v3.2.0
         with:
           platforms: ${{ env.PLATFORMS }}
           push: true
@@ -54,7 +54,7 @@ jobs:
             ghcr.io/${{ github.repository }}:latest
 
       - name: Update dockerhub description
-        uses: peter-evans/dockerhub-description@v2.4.3
+        uses: peter-evans/dockerhub-description@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_PASSWORD }}

Dockerfile

@@ -1,19 +1,20 @@
-FROM golang:alpine AS build
+FROM golang AS build
 
-ADD . /go/src/app
-WORKDIR /go/src/app
+RUN mkdir /endlessh
+ADD . /endlessh
+WORKDIR /endlessh
 RUN go mod tidy
 RUN go build -o endlessh .
 
-FROM alpine:latest
+FROM gcr.io/distroless/base
 
 LABEL org.opencontainers.image.title=endlessh-go
 LABEL org.opencontainers.image.description="Endlessh: an SSH tarpit"
 LABEL org.opencontainers.image.vendor="Shizun Ge"
 LABEL org.opencontainers.image.licenses=GPLv3
 
-COPY --from=build /go/src/app/endlessh /usr/bin/endlessh
+COPY --from=build /endlessh/endlessh /endlessh
 EXPOSE 2222 2112
 USER nobody
-ENTRYPOINT  ["/usr/bin/endlessh"]
+ENTRYPOINT  ["/endlessh"]
 CMD ["-logtostderr", "-v=1"]

README.md

@@ -39,42 +39,49 @@ Also check out [examples](./examples/README.md) for the setup of the full stack.
 
 ## Usage
 
-Usage of `./endlessh-go`
+`./endlessh-go --help`
 
-* -alsologtostderr
-  * log to standard error as well as files
-* -conn_type string
-  * Connection type. Possible values are tcp, tcp4, tcp6 (default "tcp")
-* -enable_prometheus
-  * Enable prometheus
-* -geoip_supplier string
-  * Supplier to obtain Geohash of IPs. Possible values are "off", "ip-api", "freegeoip" (default "off")
-* -host string
-  * Listening address (default "0.0.0.0")
-* -interval_ms int
-  * Message millisecond delay (default 1000)
-* -line_length int
-  * Maximum banner line length (default 32)
-* -log_backtrace_at value
-  * when logging hits line file:N, emit a stack trace
-* -log_dir string
-  * If non-empty, write log files in this directory
-* -logtostderr
-  * log to standard error instead of files
-* -max_clients int
-  * Maximum number of clients (default 4096)
-* -port string
-  * Listening port (default "2222")
-* -prometheus_entry string
-  * Entry point for prometheus (default "metrics")
-* -prometheus_port string
-  * The port for prometheus (default "2112")
-* -stderrthreshold value
-  * logs at or above this threshold go to stderr
-* -v value
-  * log level for V logs
-* -vmodule value
-  * comma-separated list of pattern=N settings for file-filtered logging
+```
+Usage of ./endlessh-go
+  -alsologtostderr
+        log to standard error as well as files
+  -conn_type string
+        Connection type. Possible values are tcp, tcp4, tcp6 (default "tcp")
+  -enable_prometheus
+        Enable prometheus
+  -geoip_supplier string
+        Supplier to obtain Geohash of IPs. Possible values are "off", "ip-api", "freegeoip", "max-mind-db" (default "off")
+  -host string
+        SSH listening address (default "0.0.0.0")
+  -interval_ms int
+        Message millisecond delay (default 1000)
+  -line_length int
+        Maximum banner line length (default 32)
+  -log_backtrace_at value
+        when logging hits line file:N, emit a stack trace
+  -log_dir string
+        If non-empty, write log files in this directory
+  -logtostderr
+        log to standard error instead of files
+  -max_clients int
+        Maximum number of clients (default 4096)
+  -max_mind_db string
+        Path to the MaxMind DB file.
+  -port string
+        SSH listening port (default "2222")
+  -prometheus_entry string
+        Entry point for prometheus (default "metrics")
+  -prometheus_host string
+        The address for prometheus (default "0.0.0.0")
+  -prometheus_port string
+        The port for prometheus (default "2112")
+  -stderrthreshold value
+        logs at or above this threshold go to stderr
+  -v value
+        log level for V logs
+  -vmodule value
+        comma-separated list of pattern=N settings for file-filtered logging
+```
 
 ## Metrics
 
@@ -95,6 +102,8 @@ It listens to port `2112` and entry point is `/metrics` by default. The port and
 
 The endlessh-go server stores the geohash of attackers as a label on `endlessh_client_open_count`, which is also off by default. You can turn it on via the CLI argument `-geoip_supplier`. The endlessh-go uses service from either [ip-api](https://ip-api.com/) or [freegeoip](https://freegeoip.live/), which may enforce a query rate and limit commercial use. Visit their website for their terms and policies.
 
+You could also use an offline GeoIP database from [MaxMind](https://www.maxmind.com) by setting `-geoip_supplier` to *max-mind-db* and `-max_mind_db` to the path of the database file.
+
 ## Dashboard
 
 The dashboard requires Grafana 8.2.

dashboard/endlessh.json

@@ -73,14 +73,39 @@
       }
     ]
   },
-  "description": "Dashboard for endlessh (add option All to job and host)",
+  "description": "Dashboard for endlessh",
   "editable": true,
   "fiscalYearStartMonth": 0,
   "gnetId": 15156,
   "graphTooltip": 0,
   "id": null,
   "iteration": 1645482521172,
-  "links": [],
+  "links": [
+    {
+      "asDropdown": false,
+      "icon": "external link",
+      "includeVars": false,
+      "keepTime": false,
+      "tags": [],
+      "targetBlank": true,
+      "title": "GitHub",
+      "tooltip": "GitHub",
+      "type": "link",
+      "url": "https://github.com/shizunge/endlessh-go"
+    },
+    {
+      "asDropdown": false,
+      "icon": "external link",
+      "includeVars": false,
+      "keepTime": false,
+      "tags": [],
+      "targetBlank": true,
+      "title": "Grafana",
+      "tooltip": "Grafana Dashboard",
+      "type": "link",
+      "url": "https://grafana.com/grafana/dashboards/15156"
+    }
+  ],
   "liveNow": false,
   "panels": [
     {
@@ -1461,6 +1486,6 @@
   "timezone": "",
   "title": "Endlessh",
   "uid": "ATIxYkO7k",
-  "version": 7,
+  "version": 8,
   "weekStart": ""
 }

examples/README.md

@@ -1,24 +1,6 @@
 # Examples
 
-## docker compose
+## docker-simple
 
-This is an example how to setup endlessh-go, Prometheus, and Grafana using [docker compose](https://docs.docker.com/compose/). The reference of the compose file can be found [here](https://docs.docker.com/compose/compose-file/).
+An example how to setup endlessh-go, Prometheus, and Grafana using [docker compose](https://docs.docker.com/compose/).
 
-*prometheus.yml* is used as a [Prometheus configuration](https://prometheus.io/docs/prometheus/latest/configuration/configuration/).
-
-*grafana-datasource.yml* is used to provision a data source for Grafana to ease the setup, though Grafana data source can also be setup manually.
-
-To start the stack, in the *examples* folder, run:
-
-```
-sudo docker-compose up -d
-```
-
-This example exposes the following ports. Except the SSH port, you should not expose other ports to public without protections (not included in this example) in production.
-
-* **2222**: The SSH port. You may test endlessh-go by running `ssh -p 2222 localhost`. Your SSH client should hang. View the log of endlessh-go by running `sudo docker logs endlessh`.
-* **2112**: The Prometheus metrics exported by endlessh-go. Go to [http://localhost:2112/metrics](http://localhost:2112/metrics) in your web browser to view the metrics.
-* **9090**: Prometheus web interface. Go to [http://localhost:9090](http://localhost:9090) in your web browser for Prometheus. You can check whether the target of endlessh-go is up (Click Status, then Targets).
-* **3000**: Grafana. Go to [http://localhost:3000](http://localhost:3000) in your web browser for Grafana. Use username *examples* and password *examples* to login.
-
-In this example, we do not provision a dashboard for Grafana. You need to manually load the endlessh-go dashboard, by either importing it from the Grafana.com using ID [15156](https://grafana.com/grafana/dashboards/15156), or pasting the dashboard JSON text to the text area. See the [Grafana documentation](https://grafana.com/docs/grafana/latest/dashboards/export-import/) about import. Then select *Prometheus* as the data source.

examples/docker-simple/README.md

@@ -0,0 +1,22 @@
+## docker compose
+
+This is an example how to setup endlessh-go, Prometheus, and Grafana using [docker compose](https://docs.docker.com/compose/). The reference of the compose file can be found [here](https://docs.docker.com/compose/compose-file/).
+
+*prometheus.yml* is used as a [Prometheus configuration](https://prometheus.io/docs/prometheus/latest/configuration/configuration/).
+
+*grafana-datasource.yml* is used to provision a data source for Grafana to ease the setup, though Grafana data source can also be setup manually.
+
+To start the stack, in the *examples* folder, run:
+
+```
+sudo docker-compose up -d
+```
+
+This example exposes the following ports. Except the SSH port, you should not expose other ports to public without protections (not included in this example) in production.
+
+* **2222**: The SSH port. You may test endlessh-go by running `ssh -p 2222 localhost`. Your SSH client should hang. View the log of endlessh-go by running `sudo docker logs endlessh`.
+* **2112**: The Prometheus metrics exported by endlessh-go. Go to [http://localhost:2112/metrics](http://localhost:2112/metrics) in your web browser to view the metrics.
+* **9090**: Prometheus web interface. Go to [http://localhost:9090](http://localhost:9090) in your web browser for Prometheus. You can check whether the target of endlessh-go is up (Click Status, then Targets).
+* **3000**: Grafana. Go to [http://localhost:3000](http://localhost:3000) in your web browser for Grafana. Use username *examples* and password *examples* to login.
+
+In this example, we do not provision a dashboard for Grafana. You need to manually load the endlessh-go dashboard, by either importing it from the Grafana.com using ID [15156](https://grafana.com/grafana/dashboards/15156), or pasting the dashboard JSON text to the text area. See the [Grafana documentation](https://grafana.com/docs/grafana/latest/dashboards/export-import/) about import. Then select *Prometheus* as the data source.

geoip.go

@@ -20,12 +20,39 @@ import (
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
+	"net"
 	"net/http"
 	"strings"
 
+	"github.com/oschwald/geoip2-golang"
 	"github.com/pierrre/geohash"
 )
 
+var (
+	maxMindDbFileName *string
+)
+
+func composeLocation(country string, region string, city string) string {
+	var locations []string
+	for _, s := range []string{country, region, city} {
+		if strings.TrimSpace(s) != "" {
+			locations = append(locations, s)
+		}
+	}
+	location := strings.Join(locations, ", ")
+	if location == "" {
+		return "Unknown"
+	}
+	return location
+}
+
+func composeCountry(country string) string {
+	if country == "" {
+		return "Unknown"
+	}
+	return country
+}
+
 type freegeoip struct {
 	Ip          string  `json:"ip"`
 	CountryCode string  `json:"country_code"`
@@ -58,21 +85,9 @@ func geohashAndLocationFromFreegeoip(address string) (string, string, string, er
 		return "s000", "Unknown", "Unknown", err
 	}
 
-	var locations []string
-	for _, s := range []string{geo.CountryName, geo.RegionName, geo.City} {
-		if strings.TrimSpace(s) != "" {
-			locations = append(locations, s)
-		}
-	}
-	location := strings.Join(locations, ", ")
-	if location == "" {
-		location = "Unknown"
-	}
-	country := geo.CountryName
-	if country == "" {
-		country = "Unknown"
-	}
 	gh := geohash.EncodeAuto(geo.Latitude, geo.Longitude)
+	country := composeCountry(geo.CountryName)
+	location := composeLocation(geo.CountryName, geo.RegionName, geo.City)
 
 	return gh, country, location, nil
 }
@@ -113,21 +128,28 @@ func geohashAndLocationFromIpapi(address string) (string, string, string, error)
 		return "s000", "Unknown", "Unknown", fmt.Errorf("failed to query %v via ip-api: status: %v, message: %v", address, geo.Status, geo.Message)
 	}
 
-	var locations []string
-	for _, s := range []string{geo.CountryName, geo.RegionName, geo.City} {
-		if strings.TrimSpace(s) != "" {
-			locations = append(locations, s)
-		}
-	}
-	location := strings.Join(locations, ", ")
-	if location == "" {
-		location = "Unknown"
-	}
-	country := geo.CountryName
-	if country == "" {
-		country = "Unknown"
-	}
 	gh := geohash.EncodeAuto(geo.Latitude, geo.Longitude)
+	country := composeCountry(geo.CountryName)
+	location := composeLocation(geo.CountryName, geo.RegionName, geo.City)
+
+	return gh, country, location, nil
+}
+
+func geohashAndLocationFromMaxMindDb(address string) (string, string, string, error) {
+	db, err := geoip2.Open(*maxMindDbFileName)
+	if err != nil {
+		return "s000", "Unknown", "Unknown", err
+	}
+	defer db.Close()
+	// If you are using strings that may be invalid, check that ip is not nil
+	ip := net.ParseIP(address)
+	record, err := db.City(ip)
+	if err != nil {
+		return "s000", "Unknown", "Unknown", err
+	}
+	gh := geohash.EncodeAuto(record.Location.Latitude, record.Location.Longitude)
+	country := composeCountry(record.Country.Names["en"])
+	location := composeLocation(record.Country.Names["en"], "", record.City.Names["en"])
 
 	return gh, country, location, nil
 }
@@ -140,6 +162,8 @@ func geohashAndLocation(address string, geoipSupplier string) (string, string, s
 		return geohashAndLocationFromIpapi(address)
 	case "freegeoip":
 		return geohashAndLocationFromFreegeoip(address)
+	case "max-mind-db":
+		return geohashAndLocationFromMaxMindDb(address)
 	default:
 		return "s000", "Unknown", "Unknown", fmt.Errorf("unknown geoipSupplier %v.", geoipSupplier)
 	}

go.mod

@@ -1,11 +1,12 @@
 module endlessh-go
 
-go 1.17
+go 1.18
 
 require (
 	github.com/golang/glog v1.0.0
-	github.com/pierrre/geohash v1.0.0
-	github.com/prometheus/client_golang v1.12.1
+	github.com/oschwald/geoip2-golang v1.8.0
+	github.com/pierrre/geohash v1.1.0
+	github.com/prometheus/client_golang v1.13.0
 )
 
 require (
@@ -13,9 +14,10 @@ require (
 	github.com/cespare/xxhash/v2 v2.1.2 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/oschwald/maxminddb-golang v1.10.0 // indirect
 	github.com/prometheus/client_model v0.2.0 // indirect
-	github.com/prometheus/common v0.32.1 // indirect
-	github.com/prometheus/procfs v0.7.3 // indirect
-	golang.org/x/sys v0.0.0-20220114195835-da31bd327af9 // indirect
-	google.golang.org/protobuf v1.26.0 // indirect
+	github.com/prometheus/common v0.37.0 // indirect
+	github.com/prometheus/procfs v0.8.0 // indirect
+	golang.org/x/sys v0.0.0-20220804214406-8e32c043e418 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
 )

go.sum

@@ -34,9 +34,7 @@ dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/Codefor/geohash v0.0.0-20140723084247-1b41c28e3a9d h1:iG9B49Q218F/XxXNRM7k/vWf7MKmLIS8AcJV9cGN4nA=
-github.com/Codefor/geohash v0.0.0-20140723084247-1b41c28e3a9d/go.mod h1:RVnhzAX71far8Kc3TQeA0k/dcaEKUnTDSOyet/JCmGI=
 github.com/TomiHiltunen/geohash-golang v0.0.0-20150112065804-b3e4e625abfb h1:wumPkzt4zaxO4rHPBrjDK8iZMR41C1qs7njNqlacwQg=
-github.com/TomiHiltunen/geohash-golang v0.0.0-20150112065804-b3e4e625abfb/go.mod h1:QiYsIBRQEO+Z4Rz7GoI+dsHVneZNONvhczuA+llOZNM=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
@@ -47,7 +45,6 @@ github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+Ce
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/broady/gogeohash v0.0.0-20120525094510-7b2c40d64042 h1:iEdmkrNMLXbM7ecffOAtZJQOQUTE4iMonxrb5opUgE4=
-github.com/broady/gogeohash v0.0.0-20120525094510-7b2c40d64042/go.mod h1:f1L9YvXvlt9JTa+A17trQjSMM6bV40f+tHjB+Pi+Fqk=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE=
@@ -58,22 +55,24 @@ github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMn
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 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/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
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@@ -116,8 +115,8 @@ github.com/google/go-cmp v0.4.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
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@@ -152,8 +151,7 @@ github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
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@@ -161,20 +159,25 @@ github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3Rllmb
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@@ -183,14 +186,16 @@ github.com/prometheus/client_model v0.2.0/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6T
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@@ -200,8 +205,8 @@ github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
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@@ -275,12 +280,15 @@ golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81R
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@@ -325,15 +333,20 @@ golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7w
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+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
 golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
@@ -380,7 +393,6 @@ golang.org/x/tools v0.0.0-20200825202427-b303f430e36d/go.mod h1:njjCfa9FT2d7l9Bc
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
 google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
@@ -456,8 +468,9 @@ google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpAD
 google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.26.0 h1:bxAC2xTBsZGibn2RTntX0oH50xLsqy1OxA9tTL3p/lk=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
+google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -469,6 +482,7 @@ gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=

main.go

@@ -44,7 +44,7 @@ var (
 	clientSeconds         *prometheus.CounterVec
 )
 
-func initPrometheus(connHost, prometheusPort, prometheusEntry string) {
+func initPrometheus(prometheusHost, prometheusPort, prometheusEntry string) {
 	totalClients = prometheus.NewCounterFunc(
 		prometheus.CounterOpts{
 			Name: "endlessh_client_open_count_total",
@@ -99,8 +99,8 @@ func initPrometheus(connHost, prometheusPort, prometheusEntry string) {
 	prometheus.MustRegister(clientSeconds)
 	http.Handle("/"+prometheusEntry, promhttp.Handler())
 	go func() {
-		glog.Infof("Starting Prometheus on %v:%v, entry point is /%v", connHost, prometheusPort, prometheusEntry)
-		http.ListenAndServe(connHost+":"+prometheusPort, nil)
+		glog.Infof("Starting Prometheus on %v:%v, entry point is /%v", prometheusHost, prometheusPort, prometheusEntry)
+		http.ListenAndServe(prometheusHost+":"+prometheusPort, nil)
 	}()
 }
 
@@ -109,12 +109,14 @@ func main() {
 	bannerMaxLength := flag.Int64("line_length", 32, "Maximum banner line length")
 	maxClients := flag.Int64("max_clients", 4096, "Maximum number of clients")
 	connType := flag.String("conn_type", "tcp", "Connection type. Possible values are tcp, tcp4, tcp6")
-	connHost := flag.String("host", "0.0.0.0", "Listening address")
-	connPort := flag.String("port", "2222", "Listening port")
+	connHost := flag.String("host", "0.0.0.0", "SSH listening address")
+	connPort := flag.String("port", "2222", "SSH listening port")
 	prometheusEnabled := flag.Bool("enable_prometheus", false, "Enable prometheus")
+	prometheusHost := flag.String("prometheus_host", "0.0.0.0", "The address for prometheus")
 	prometheusPort := flag.String("prometheus_port", "2112", "The port for prometheus")
 	prometheusEntry := flag.String("prometheus_entry", "metrics", "Entry point for prometheus")
-	geoipSupplier := flag.String("geoip_supplier", "off", "Supplier to obtain Geohash of IPs. Possible values are \"off\", \"ip-api\", \"freegeoip\"")
+	geoipSupplier := flag.String("geoip_supplier", "off", "Supplier to obtain Geohash of IPs. Possible values are \"off\", \"ip-api\", \"freegeoip\", \"max-mind-db\"")
+	maxMindDbFileName = flag.String("max_mind_db", "", "Path to the MaxMind DB file.")
 
 	flag.Usage = func() {
 		fmt.Fprintf(flag.CommandLine.Output(), "Usage of %v \n", os.Args[0])
@@ -122,8 +124,11 @@ func main() {
 	}
 	flag.Parse()
 
+	if *connType == "tcp6" && *prometheusHost == "0.0.0.0" {
+		*prometheusHost = "[::]"
+	}
 	if *prometheusEnabled {
-		initPrometheus(*connHost, *prometheusPort, *prometheusEntry)
+		initPrometheus(*prometheusHost, *prometheusPort, *prometheusEntry)
 	}
 
 	rand.Seed(time.Now().UnixNano())