Init commit

2025-02-06 04:52:43 +08:00 · 2022-07-05 12:18:20 +08:00 · 2022-07-05 12:18:20 +08:00 · 2ced72c94d
commit 2ced72c94d
9 changed files with 525 additions and 0 deletions
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@ -0,0 +1,37 @@
+name: Build
+on:
+  push:
+    branches:
+      - main
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Get latest go version
+        id: version
+        run: |
+          echo ::set-output name=go_version::$(curl -s https://raw.githubusercontent.com/actions/go-versions/main/versions-manifest.json | grep -oE '"version": "[0-9]{1}.[0-9]{1,}(.[0-9]{1,})?"' | head -1 | cut -d':' -f2 | sed 's/ //g; s/"//g')
+      - name: Setup Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ steps.version.outputs.go_version }}
+      - name: Build geoip
+        id: build
+        env:
+          NO_SKIP: true
+        run: go run -v .
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v2
+        with:
+          name: geoip.db
+          path: geoip.db
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v2
+        with:
+          name: geoip-cn.db
+          path: geoip-cn.db
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@ -0,0 +1,81 @@
+name: Release
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 8 12 * *"
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Get latest go version
+        id: version
+        run: |
+          echo ::set-output name=go_version::$(curl -s https://raw.githubusercontent.com/actions/go-versions/main/versions-manifest.json | grep -oE '"version": "[0-9]{1}.[0-9]{1,}(.[0-9]{1,})?"' | head -1 | cut -d':' -f2 | sed 's/ //g; s/"//g')
+      - name: Setup Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ steps.version.outputs.go_version }}
+      - name: Build geoip
+        id: build
+        run: go run -v .
+      - name: Generate sha256 hash
+        if: steps.build.outputs.skip != 'true'
+        run: |
+          sha256sum geoip.db > geoip.db.sha256sum
+          sha256sum geoip-cn.db > geoip-cn.db.sha256sum
+      - name: Create a release
+        if: steps.build.outputs.skip != 'true'
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ steps.build.outputs.tag }}
+          release_name: ${{ steps.build.outputs.tag }}
+          draft: false
+          prerelease: false
+      - name: Release geoip.db
+        if: steps.build.outputs.skip != 'true'
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./geoip.db
+          asset_name: geoip.db
+          asset_content_type: application/octet-stream
+      - name: Release geoip.db sha256sum
+        if: steps.build.outputs.skip != 'true'
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./geoip.db.sha256sum
+          asset_name: geoip.db.sha256sum
+          asset_content_type: text/plain
+      - name: Release geoip-cn.db
+        if: steps.build.outputs.skip != 'true'
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./geoip-cn.db
+          asset_name: geoip-cn.db
+          asset_content_type: application/octet-stream
+      - name: Release geoip.db sha256sum
+        if: steps.build.outputs.skip != 'true'
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./geoip-cn.db.sha256sum
+          asset_name: geoip-cn.db.sha256sum
+          asset_content_type: text/plain
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,4 @@
+/.idea/
+/vendor/
+/*.db
+*.mmdb
--- a/.golangci.yml
+++ b/.golangci.yml
@ -0,0 +1,54 @@
+run:
+  timeout: 5m
+
+linters:
+  enable-all: true
+  disable:
+    - errcheck
+    - wrapcheck
+    - varnamelen
+    - stylecheck
+    - nonamedreturns
+    - nlreturn
+    - ireturn
+    - gomnd
+    - exhaustivestruct
+    - ifshort
+    - goerr113
+    - gochecknoglobals
+    - forcetypeassert
+    - exhaustruct
+    - exhaustive
+    - cyclop
+    - containedctx
+    - wsl
+    - nestif
+    - lll
+    - funlen
+    - goconst
+    - godot
+    - gocognit
+    - golint
+    - goimports
+    - gochecknoinits
+    - maligned
+    - tagliatelle
+    - gocyclo
+    - maintidx
+    - gocritic
+    - nakedret
+
+linters-settings:
+  revive:
+    rules:
+      - name: var-naming
+        disabled: true
+  govet:
+    enable-all: true
+    disable:
+      - composites
+      - fieldalignment
+      - shadow
+  gosec:
+    excludes:
+      - G404
--- a/14
+++ b/14
@ -0,0 +1,14 @@
+Copyright (C) 2022 by nekohasekai <contact-sagernet@sekai.icu>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
--- a/format.go
+++ b/format.go
@ -0,0 +1,7 @@
+package main
+
+//go:generate go install -v mvdan.cc/gofumpt@latest
+//go:generate go install -v github.com/daixiang0/gci@latest
+//go:generate gofumpt -l -w .
+//go:generate gofmt -s -w .
+//go:generate gci write .
--- a/go.mod
+++ b/go.mod
@ -0,0 +1,21 @@
+module sing-geoip
+
+go 1.18
+
+require (
+	github.com/google/go-github/v45 v45.2.0
+	github.com/maxmind/mmdbwriter v0.0.0-20220629155728-aaafab1a32b0
+	github.com/oschwald/geoip2-golang v1.7.0
+	github.com/oschwald/maxminddb-golang v1.9.0
+	github.com/sagernet/sing v0.0.0-20220627234642-a817f7084d9c
+	github.com/sirupsen/logrus v1.8.1
+)
+
+require (
+	github.com/google/go-querystring v1.1.0 // indirect
+	go4.org/intern v0.0.0-20220617035311-6925f38cc365 // indirect
+	go4.org/unsafe/assume-no-moving-gc v0.0.0-20220617031537-928513b29760 // indirect
+	golang.org/x/crypto v0.0.0-20210817164053-32db794688a5 // indirect
+	golang.org/x/sys v0.0.0-20220615213510-4f61da869c0c // indirect
+	inet.af/netaddr v0.0.0-20220617031823-097006376321 // indirect
+)
--- a/go.sum
+++ b/go.sum
@ -0,0 +1,60 @@
+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/dvyukov/go-fuzz v0.0.0-20210103155950-6a8e9d1f2415/go.mod h1:11Gm+ccJnvAhCNLlf5+cS9KjtbaD5I5zaZpFMsTHWTw=
+github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+github.com/google/go-cmp v0.5.8 h1:e6P7q2lk1O+qJJb4BtCQXlK8vWEO8V1ZeuEdJNOqZyg=
+github.com/google/go-github/v45 v45.2.0 h1:5oRLszbrkvxDDqBCNj2hjDZMKmvexaZ1xw/FCD+K3FI=
+github.com/google/go-github/v45 v45.2.0/go.mod h1:FObaZJEDSTa/WGCzZ2Z3eoCDXWJKMenWWTrd8jrta28=
+github.com/google/go-querystring v1.1.0 h1:AnCroh3fv4ZBgVIf1Iwtovgjaw/GiKJo8M8yD/fhyJ8=
+github.com/google/go-querystring v1.1.0/go.mod h1:Kcdr2DB4koayq7X8pmAG4sNG59So17icRSOU623lUBU=
+github.com/maxmind/mmdbwriter v0.0.0-20220629155728-aaafab1a32b0 h1:OkGyxTsNr1xGezC/A3zSgvGJbvaxfXxAy+aCEveWUSw=
+github.com/maxmind/mmdbwriter v0.0.0-20220629155728-aaafab1a32b0/go.mod h1:hcQEc0iII9Rd1pIPQKWWChWewb3sk6B6kfcxXX3+Uvc=
+github.com/oschwald/geoip2-golang v1.7.0 h1:JW1r5AKi+vv2ujSxjKthySK3jo8w8oKWPyXsw+Qs/S8=
+github.com/oschwald/geoip2-golang v1.7.0/go.mod h1:mdI/C7iK7NVMcIDDtf4bCKMJ7r0o7UwGeCo9eiitCMQ=
+github.com/oschwald/maxminddb-golang v1.9.0 h1:tIk4nv6VT9OiPyrnDAfJS1s1xKDQMZOsGojab6EjC1Y=
+github.com/oschwald/maxminddb-golang v1.9.0/go.mod h1:TK+s/Z2oZq0rSl4PSeAEoP0bgm82Cp5HyvYbt8K3zLY=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/sagernet/sing v0.0.0-20220627234642-a817f7084d9c h1:98QC0wtaD648MFPw82KaT1O9LloQgR4ZyIDtNtsno8Y=
+github.com/sagernet/sing v0.0.0-20220627234642-a817f7084d9c/go.mod h1:I67R/q5f67xDExL2kL3RLIP7kGJBOPkYXkpRAykgC+E=
+github.com/sirupsen/logrus v1.8.1 h1:dJKuHgqk1NNQlqoA6BTlM1Wf9DOH3NBjQyu0h9+AZZE=
+github.com/sirupsen/logrus v1.8.1/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
+github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+go4.org/intern v0.0.0-20211027215823-ae77deb06f29/go.mod h1:cS2ma+47FKrLPdXFpr7CuxiTW3eyJbWew4qx0qtQWDA=
+go4.org/intern v0.0.0-20220617035311-6925f38cc365 h1:t9hFvR102YlOqU0fQn1wgwhNvSbHGBbbJxX9JKfU3l0=
+go4.org/intern v0.0.0-20220617035311-6925f38cc365/go.mod h1:WXRv3p7T6gzt0CcJm43AAKdKVZmcQbwwC7EwquU5BZU=
+go4.org/unsafe/assume-no-moving-gc v0.0.0-20211027215541-db492cf91b37/go.mod h1:FftLjUGFEDu5k8lt0ddY+HcrH/qU/0qk+H8j9/nTl3E=
+go4.org/unsafe/assume-no-moving-gc v0.0.0-20220617031537-928513b29760 h1:FyBZqvoA/jbNzuAWLQE2kG820zMAkcilx6BMjGbL/E4=
+go4.org/unsafe/assume-no-moving-gc v0.0.0-20220617031537-928513b29760/go.mod h1:FftLjUGFEDu5k8lt0ddY+HcrH/qU/0qk+H8j9/nTl3E=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20210817164053-32db794688a5 h1:HWj/xjIHfjYU5nVXpTM0s39J9CbLn7Cc5a7IC5rwsMQ=
+golang.org/x/crypto v0.0.0-20210817164053-32db794688a5/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20220615213510-4f61da869c0c h1:aFV+BgZ4svzjfabn8ERpuB4JI4N6/rdy1iusx77G3oU=
+golang.org/x/sys v0.0.0-20220615213510-4f61da869c0c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.0/go.mod h1:xkSsbof2nBLbhDlRMhhhyNLN/zl3eTqcnHD5viDpcZ0=
+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/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+inet.af/netaddr v0.0.0-20220617031823-097006376321 h1:B4dC8ySKTQXasnjDTMsoCMf1sQG4WsMej0WXaHxunmU=
+inet.af/netaddr v0.0.0-20220617031823-097006376321/go.mod h1:OIezDfdzOgFhuw4HuWapWq2e9l0H9tK4F1j+ETRtF3k=
--- a/main.go
+++ b/main.go
@ -0,0 +1,247 @@
+package main
+
+import (
+	"context"
+	"io"
+	"net"
+	"net/http"
+	"os"
+	"sort"
+	"strings"
+
+	"github.com/google/go-github/v45/github"
+	"github.com/maxmind/mmdbwriter"
+	"github.com/maxmind/mmdbwriter/inserter"
+	"github.com/maxmind/mmdbwriter/mmdbtype"
+	"github.com/oschwald/geoip2-golang"
+	"github.com/oschwald/maxminddb-golang"
+	"github.com/sagernet/sing/common"
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/rw"
+	"github.com/sirupsen/logrus"
+)
+
+var githubClient *github.Client
+
+func init() {
+	accessToken, loaded := os.LookupEnv("ACCESS_TOKEN")
+	if !loaded {
+		githubClient = github.NewClient(nil)
+		return
+	}
+	transport := &github.BasicAuthTransport{
+		Username: accessToken,
+	}
+	githubClient = github.NewClient(transport.Client())
+}
+
+func fetch(from string) (*github.RepositoryRelease, error) {
+	names := strings.SplitN(from, "/", 2)
+	latestRelease, _, err := githubClient.Repositories.GetLatestRelease(context.Background(), names[0], names[1])
+	if err != nil {
+		return nil, err
+	}
+	return latestRelease, err
+}
+
+func get(downloadURL *string) ([]byte, error) {
+	logrus.Info("download ", *downloadURL)
+	response, err := http.Get(*downloadURL)
+	if err != nil {
+		return nil, err
+	}
+	defer response.Body.Close()
+	return io.ReadAll(response.Body)
+}
+
+func download(release *github.RepositoryRelease) ([]byte, error) {
+	geoipAsset := common.Find(release.Assets, func(it *github.ReleaseAsset) bool {
+		return *it.Name == "Country.mmdb"
+	})
+	if geoipAsset == nil {
+		return nil, E.New("Country.mmdb not found in upstream release ", release.Name)
+	}
+	return get(geoipAsset.BrowserDownloadURL)
+}
+
+func parse(binary []byte) (metadata maxminddb.Metadata, countryMap map[string][]*net.IPNet, err error) {
+	database, err := maxminddb.FromBytes(binary)
+	if err != nil {
+		return
+	}
+	metadata = database.Metadata
+	networks := database.Networks(maxminddb.SkipAliasedNetworks)
+	countryMap = make(map[string][]*net.IPNet)
+	var country geoip2.Enterprise
+	var ipNet *net.IPNet
+	for networks.Next() {
+		ipNet, err = networks.Network(&country)
+		if err != nil {
+			return
+		}
+		var code string
+		if country.Country.IsoCode != "" {
+			code = strings.ToLower(country.Country.IsoCode)
+		} else if country.RegisteredCountry.IsoCode != "" {
+			code = strings.ToLower(country.RegisteredCountry.IsoCode)
+		} else if country.RepresentedCountry.IsoCode != "" {
+			code = strings.ToLower(country.RepresentedCountry.IsoCode)
+		} else if country.Continent.Code != "" {
+			code = strings.ToLower(country.Continent.Code)
+		} else {
+			continue
+		}
+		countryMap[code] = append(countryMap[code], ipNet)
+	}
+	err = networks.Err()
+	return
+}
+
+func newWriter(metadata maxminddb.Metadata, codes []string) (*mmdbwriter.Tree, error) {
+	return mmdbwriter.New(mmdbwriter.Options{
+		DatabaseType:            "sing-geoip",
+		Languages:               codes,
+		IPVersion:               int(metadata.IPVersion),
+		RecordSize:              int(metadata.RecordSize),
+		Inserter:                inserter.ReplaceWith,
+		DisableIPv4Aliasing:     true,
+		IncludeReservedNetworks: true,
+	})
+}
+
+func open(path string, codes []string) (*mmdbwriter.Tree, error) {
+	reader, err := maxminddb.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	if reader.Metadata.DatabaseType != "sing-geoip" {
+		return nil, E.New("invalid sing-geoip database")
+	}
+	reader.Close()
+
+	return mmdbwriter.Load(path, mmdbwriter.Options{
+		Languages: append(reader.Metadata.Languages, common.Filter(codes, func(it string) bool {
+			return !common.Contains(reader.Metadata.Languages, it)
+		})...),
+		Inserter: inserter.ReplaceWith,
+	})
+}
+
+func write(writer *mmdbwriter.Tree, dataMap map[string][]*net.IPNet, output string, codes []string) error {
+	if len(codes) == 0 {
+		codes = make([]string, 0, len(dataMap))
+		for code := range dataMap {
+			codes = append(codes, code)
+		}
+	}
+	sort.Strings(codes)
+	codeMap := make(map[string]bool)
+	for _, code := range codes {
+		codeMap[code] = true
+	}
+	for code, data := range dataMap {
+		if !codeMap[code] {
+			continue
+		}
+		for _, item := range data {
+			err := writer.Insert(item, mmdbtype.String(code))
+			if err != nil {
+				return err
+			}
+		}
+	}
+	outputFile, err := os.Create(output)
+	if err != nil {
+		return err
+	}
+	defer outputFile.Close()
+	_, err = writer.WriteTo(outputFile)
+	return err
+}
+
+func local(input string, output string, codes []string) error {
+	binary, err := os.ReadFile(input)
+	if err != nil {
+		return err
+	}
+	metadata, countryMap, err := parse(binary)
+	if err != nil {
+		return err
+	}
+	var writer *mmdbwriter.Tree
+	if rw.FileExists(output) {
+		writer, err = open(output, codes)
+	} else {
+		writer, err = newWriter(metadata, codes)
+	}
+	if err != nil {
+		return err
+	}
+	return write(writer, countryMap, output, codes)
+}
+
+func release(source string, destination string) error {
+	sourceRelease, err := fetch(source)
+	if err != nil {
+		return err
+	}
+	destinationRelease, err := fetch(destination)
+	if err != nil {
+		logrus.Warn("missing destination latest release")
+	} else {
+		if os.Getenv("NO_SKIP") != "true" && strings.Contains(*destinationRelease.Name, *sourceRelease.Name) {
+			logrus.Info("already latest")
+			setActionOutput("skip", "true")
+			return nil
+		}
+	}
+	binary, err := download(sourceRelease)
+	if err != nil {
+		return err
+	}
+	metadata, countryMap, err := parse(binary)
+	if err != nil {
+		return err
+	}
+	allCodes := make([]string, 0, len(countryMap))
+	for code := range countryMap {
+		allCodes = append(allCodes, code)
+	}
+	writer, err := newWriter(metadata, allCodes)
+	if err != nil {
+		return err
+	}
+	err = write(writer, countryMap, "geoip.db", nil)
+	if err != nil {
+		return err
+	}
+	writer, err = newWriter(metadata, []string{"cn"})
+	if err != nil {
+		return err
+	}
+	err = write(writer, countryMap, "geoip-cn.db", []string{"cn"})
+	if err != nil {
+		return err
+	}
+	if err != nil {
+		return err
+	}
+	setActionOutput("tag", *sourceRelease.Name)
+	return nil
+}
+
+func setActionOutput(name string, content string) {
+	os.Stdout.WriteString("::set-output name=" + name + "::" + content + "\n")
+}
+
+func main() {
+	var err error
+	if len(os.Args) >= 3 {
+		err = local(os.Args[1], os.Args[2], os.Args[2:])
+	} else {
+		err = release("Dreamacro/maxmind-geoip", "sagernet/sing-geoip")
+	}
+	if err != nil {
+		logrus.Fatal(err)
+	}
+}