Repository: dejavuzhou/felix Branch: main Commit: 9e5c6c479449 Files: 48 Total size: 69.3 KB Directory structure: gitextract_4c84voe0/ ├── .gitattributes ├── .github/ │ └── workflows/ │ └── codeql-analysis.yml ├── .gitignore ├── .travis.yml ├── GeoLite2-Country.mmdb ├── LICENSE ├── Makefile ├── README.md ├── README_zh.md ├── SECURITY.md ├── api/ │ ├── api_cfip.go │ ├── api_meta.go │ ├── api_proxy.go │ └── app.go ├── go.mod ├── go.sum ├── main.go ├── model/ │ ├── config.go │ ├── db.go │ ├── helper.go │ ├── migrate.go │ ├── t_cfip.go │ ├── t_meta.go │ └── t_proxy.go ├── socks5ws/ │ ├── app.go │ ├── const.go │ ├── relay_svr.go │ ├── relay_tcp_direct.go │ ├── relay_tcp_socks5e.go │ ├── relay_udp_direct.go │ ├── socks5_bind.go │ ├── socks5_connect.go │ ├── socks5_req.go │ ├── socks5_udp_associate.go │ └── websocket.go └── util/ ├── browse_open.go ├── cf_ip.go ├── cf_ip_test.go ├── crypt_aes.go ├── crypt_aes_test.go ├── crypt_des.go ├── enable_socks5_darwin.go ├── enable_socks5_linux.go ├── enable_socks5_windows.go ├── geo_ip.go ├── geo_ip_test.go ├── random_string.go └── vless_data.go ================================================ FILE CONTENTS ================================================ ================================================ FILE: .gitattributes ================================================ * linguist-vendored *.go linguist-vendored=false ================================================ FILE: .github/workflows/codeql-analysis.yml ================================================ # For most projects, this workflow file will not need changing; you simply need # to commit it to your repository. # # You may wish to alter this file to override the set of languages analyzed, # or to provide custom queries or build logic. # # ******** NOTE ******** # We have attempted to detect the languages in your repository. Please check # the `language` matrix defined below to confirm you have the correct set of # supported CodeQL languages. # name: "CodeQL" on: push: branches: [ master ] pull_request: # The branches below must be a subset of the branches above branches: [ master ] schedule: - cron: '29 4 * * 2' jobs: analyze: name: Analyze runs-on: ubuntu-latest permissions: actions: read contents: read security-events: write strategy: fail-fast: false matrix: language: [ 'go' ] # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python' ] # Learn more: # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed steps: - name: Checkout repository uses: actions/checkout@v2 # Initializes the CodeQL tools for scanning. - name: Initialize CodeQL uses: github/codeql-action/init@v1 with: languages: ${{ matrix.language }} # If you wish to specify custom queries, you can do so here or in a config file. # By default, queries listed here will override any specified in a config file. # Prefix the list here with "+" to use these queries and those in the config file. # queries: ./path/to/local/query, your-org/your-repo/queries@main # Autobuild attempts to build any compiled languages (C/C++, C#, or Java). # If this step fails, then you should remove it and run the build manually (see below) - name: Autobuild uses: github/codeql-action/autobuild@v1 # ℹ️ Command-line programs to run using the OS shell. # 📚 https://git.io/JvXDl # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines # and modify them (or add more) to build your code if your project # uses a compiled language #- run: | # make bootstrap # make release - name: Perform CodeQL Analysis uses: github/codeql-action/analyze@v1 ================================================ FILE: .gitignore ================================================ felix .idea builds builds/* test* _build* *.exe release dist _book _release .vscode _nes dist/ *sqlite3 ================================================ FILE: .travis.yml ================================================ language: go os: - linux - osx matrix: fast_finish: true include: - go: 1.12.x env: CGO_ENABLED=0 GO111MODULE=on \ git: depth: 1 before_install: - go build script: - ./felix sshw notifications: email: recipients: - neochau@gmail.com on_success: never ================================================ FILE: LICENSE ================================================ Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. "Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity. "You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License. "Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types. "Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below). "Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof. "Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution." "Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work. 2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form. 3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed. 4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions: (a) You must give any other recipients of the Work or Derivative Works a copy of this License; and (b) You must cause any modified files to carry prominent notices stating that You changed the files; and (c) You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and (d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License. You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License. 5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions. 6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file. 7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License. 8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages. 9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability. END OF TERMS AND CONDITIONS APPENDIX: How to apply the Apache License to your work. To apply the Apache License to your work, attach the following boilerplate notice, with the fields enclosed by brackets "[]" replaced with your own identifying information. (Don't include the brackets!) The text should be enclosed in the appropriate comment syntax for the file format. We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives. Copyright [yyyy] [name of copyright owner] 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. ================================================ FILE: Makefile ================================================ LDFLAGS := "-s -w -X main.buildTime=$(shell date -u '+%Y-%m-%dT%I:%M:%S%p') -X main.gitHash=$(shell git rev-parse HEAD)" GO ?= go GOFMT ?= gofmt "-s" PACKAGES ?= $(shell $(GO) list ./... | grep -v /vendor/) VETPACKAGES ?= $(shell $(GO) list ./... | grep -v /vendor/ | grep -v /examples/) GOFILES := $(shell find . -name "*.go" -type f -not -path "./vendor/*") run: install ./build/felix -V install: go install -ldflags $(LDFLAGS) vuejs: felix ginbin -s dist -p felixbin build:vuejs go build -race -ldflags $(LDFLAGS) -o build/felix *.go release:vuejs CGO_ENABLED=1 GOOS=windows GOARCH=amd64 CXX_FOR_TARGET=i686-w64-mingw32-g++ CC_FOR_TARGET=i686-w64-mingw32-gcc go build -ldflags $(LDFLAGS) -o _release/felix-amd64-win.exe *.go CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -ldflags $(LDFLAGS) -o _release/felix-amd64-linux *.go CGO_ENABLED=1 GOOS=linux GOARCH=arm go build -ldflags $(LDFLAGS) -o _release/felix-amd64-linux-arm *.go CGO_ENABLED=1 GOOS=darwin GOARCH=amd64 go build -ldflags $(LDFLAGS) -o _release/felix-amd64-darwin *.go .PHONY: release ================================================ FILE: README.md ================================================ # Felix [中文](README_zh.md) ================================================ FILE: README_zh.md ================================================ # Felix [![Build Status](https://travis-ci.org/libragen/felix.svg?branch=master)](https://travis-ci.org/libragen/felix) ================================================ FILE: SECURITY.md ================================================ # Security Policy ## Supported Versions Use this section to tell people about which versions of your project are currently being supported with security updates. | Version | Supported | | ------- | ------------------ | | 5.1.x | :white_check_mark: | | 5.0.x | :x: | | 4.0.x | :white_check_mark: | | < 4.0 | :x: | ## Reporting a Vulnerability Use this section to tell people how to report a vulnerability. Tell them where to go, how often they can expect to get an update on a reported vulnerability, what to expect if the vulnerability is accepted or declined, etc. ================================================ FILE: api/api_cfip.go ================================================ package api import ( "encoding/json" "fmt" "github.com/mojocn/felix/model" "github.com/mojocn/felix/util" "net/http" ) func apiCfIpInit(w http.ResponseWriter, req *http.Request) { client, err := util.NewCfIP() if checkErr(w, err) { return } var rows []model.CfIp client.AllIps(func(ip, cidr string) { ins := model.CfIp{ IP: ip, Cidr: cidr, } rows = append(rows, ins) }) err = model.DB().CreateInBatches(rows, 200).Error if checkErr(w, err) { return } responseJson(w, http.StatusOK, "ok") } func apiCfIpList(w http.ResponseWriter, req *http.Request) { var rows []model.CfIp err := model.DB().Limit(100).Find(&rows).Error if checkErr(w, err) { return } responseJson(w, http.StatusOK, rows) } func apiCfIpUpdate(w http.ResponseWriter, req *http.Request) { ins := new(model.CfIp) err := json.NewDecoder(req.Body).Decode(ins) if checkErr(w, err) { return } err = model.DB().Save(ins).Error if checkErr(w, err) { return } responseJson(w, http.StatusOK, ins) } func apiCfIpCreate(w http.ResponseWriter, req *http.Request) { ins := new(model.CfIp) err := json.NewDecoder(req.Body).Decode(ins) if checkErr(w, err) { return } ins.ID = 0 err = model.DB().Save(ins).Error if checkErr(w, err) { return } responseJson(w, http.StatusOK, ins) } func apiCfIpDelete(w http.ResponseWriter, req *http.Request) { ins := new(model.CfIp) err := json.NewDecoder(req.Body).Decode(ins) if checkErr(w, err) { return } if ins.ID == 0 { err = fmt.Errorf("id can not be 0") } if checkErr(w, err) { return } err = model.DB().Delete(ins).Error if checkErr(w, err) { return } responseJson(w, http.StatusOK, ins) } ================================================ FILE: api/api_meta.go ================================================ package api import ( "encoding/json" "github.com/mojocn/felix/model" "net/http" ) func responseJson(w http.ResponseWriter, code int, data any) { w.Header().Set("Content-Type", "application/json") w.WriteHeader(code) err := json.NewEncoder(w).Encode(data) if err != nil { http.Error(w, err.Error(), http.StatusInternalServerError) } } func checkErr(w http.ResponseWriter, err error) (shouldReturn bool) { if err != nil { http.Error(w, err.Error(), http.StatusTeapot) return true } return false } func apiMeta(w http.ResponseWriter, req *http.Request) { row := new(model.Meta) err := model.DB().First(row).Error if checkErr(w, err) { return } responseJson(w, http.StatusOK, row) } ================================================ FILE: api/api_proxy.go ================================================ package api import ( "encoding/json" "fmt" "github.com/mojocn/felix/model" "net/http" ) func apiProxyList(w http.ResponseWriter, req *http.Request) { rows := []model.Proxy{} err := model.DB().Find(&rows).Error if checkErr(w, err) { return } responseJson(w, http.StatusOK, rows) } func apiProxyUpdate(w http.ResponseWriter, req *http.Request) { ins := new(model.Proxy) err := json.NewDecoder(req.Body).Decode(ins) if checkErr(w, err) { return } err = model.DB().Save(ins).Error if checkErr(w, err) { return } responseJson(w, http.StatusOK, ins) } func apiProxyCreate(w http.ResponseWriter, req *http.Request) { ins := new(model.Proxy) err := json.NewDecoder(req.Body).Decode(ins) if checkErr(w, err) { return } ins.ID = 0 err = model.DB().Save(ins).Error if checkErr(w, err) { return } responseJson(w, http.StatusOK, ins) } func apiProxyDelete(w http.ResponseWriter, req *http.Request) { ins := new(model.Proxy) err := json.NewDecoder(req.Body).Decode(ins) if checkErr(w, err) { return } if ins.ID == 0 { err = fmt.Errorf("id can not be 0") } if checkErr(w, err) { return } err = model.DB().Delete(ins).Error if checkErr(w, err) { return } responseJson(w, http.StatusOK, ins) } ================================================ FILE: api/app.go ================================================ package api import ( "log" "net/http" ) type apiHandler struct{} func (apiHandler) ServeHTTP(http.ResponseWriter, *http.Request) {} func AdminServer(addr string) *http.Server { log.Println("http api server starting on", addr) mux := http.NewServeMux() mux.Handle("/api/foo", apiHandler{}) mux.HandleFunc("GET /api/meta", apiMeta) mux.HandleFunc("GET /api/proxies", apiProxyList) mux.HandleFunc("PATCH /api/proxies", apiProxyUpdate) mux.HandleFunc("POST /api/proxies", apiProxyCreate) mux.HandleFunc("DELETE /api/proxies", apiProxyDelete) mux.HandleFunc("GET /api/cfip-init", apiCfIpInit) mux.HandleFunc("GET /api/cfips", apiCfIpList) mux.HandleFunc("PATCH /api/cfips", apiCfIpUpdate) mux.HandleFunc("POST /api/cfips", apiCfIpCreate) mux.HandleFunc("DELETE /api/cfips", apiCfIpDelete) server := &http.Server{ Addr: addr, Handler: mux, } return server } ================================================ FILE: go.mod ================================================ module github.com/mojocn/felix go 1.22 require ( github.com/google/uuid v1.6.0 github.com/gorilla/websocket v1.5.3 github.com/oschwald/geoip2-golang v1.11.0 golang.org/x/sys v0.27.0 gorm.io/driver/sqlite v1.5.6 gorm.io/gorm v1.25.12 ) require ( github.com/jinzhu/inflection v1.0.0 // indirect github.com/jinzhu/now v1.1.5 // indirect github.com/mattn/go-sqlite3 v1.14.22 // indirect github.com/oschwald/maxminddb-golang v1.13.0 // indirect golang.org/x/text v0.20.0 // indirect ) ================================================ FILE: go.sum ================================================ 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/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0= github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo= github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg= github.com/gorilla/websocket v1.5.3/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE= github.com/jinzhu/inflection v1.0.0 h1:K317FqzuhWc8YvSVlFMCCUb36O/S9MCKRDI7QkRKD/E= github.com/jinzhu/inflection v1.0.0/go.mod h1:h+uFLlag+Qp1Va5pdKtLDYj+kHp5pxUVkryuEj+Srlc= github.com/jinzhu/now v1.1.5 h1:/o9tlHleP7gOFmsnYNz3RGnqzefHA47wQpKrrdTIwXQ= github.com/jinzhu/now v1.1.5/go.mod h1:d3SSVoowX0Lcu0IBviAWJpolVfI5UJVZZ7cO71lE/z8= github.com/mattn/go-sqlite3 v1.14.22 h1:2gZY6PC6kBnID23Tichd1K+Z0oS6nE/XwU+Vz/5o4kU= github.com/mattn/go-sqlite3 v1.14.22/go.mod h1:Uh1q+B4BYcTPb+yiD3kU8Ct7aC0hY9fxUwlHK0RXw+Y= github.com/oschwald/geoip2-golang v1.11.0 h1:hNENhCn1Uyzhf9PTmquXENiWS6AlxAEnBII6r8krA3w= github.com/oschwald/geoip2-golang v1.11.0/go.mod h1:P9zG+54KPEFOliZ29i7SeYZ/GM6tfEL+rgSn03hYuUo= github.com/oschwald/maxminddb-golang v1.13.0 h1:R8xBorY71s84yO06NgTmQvqvTvlS/bnYZrrWX1MElnU= github.com/oschwald/maxminddb-golang v1.13.0/go.mod h1:BU0z8BfFVhi1LQaonTwwGQlsHUEu9pWNdMfmq4ztm0o= 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/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg= github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY= golang.org/x/sys v0.27.0 h1:wBqf8DvsY9Y/2P8gAfPDEYNuS30J4lPHJxXSb/nJZ+s= golang.org/x/sys v0.27.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA= golang.org/x/text v0.20.0 h1:gK/Kv2otX8gz+wn7Rmb3vT96ZwuoxnQlY+HlJVj7Qug= golang.org/x/text v0.20.0/go.mod h1:D4IsuqiFMhST5bX19pQ9ikHC2GsaKyk/oF+pn3ducp4= gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= gorm.io/driver/sqlite v1.5.6 h1:fO/X46qn5NUEEOZtnjJRWRzZMe8nqJiQ9E+0hi+hKQE= gorm.io/driver/sqlite v1.5.6/go.mod h1:U+J8craQU6Fzkcvu8oLeAQmi50TkwPEhHDEjQZXDah4= gorm.io/gorm v1.25.12 h1:I0u8i2hWQItBq1WfE0o2+WuL9+8L21K9e2HHSTE/0f8= gorm.io/gorm v1.25.12/go.mod h1:xh7N7RHfYlNc5EmcI/El95gXusucDrQnHXe0+CgWcLQ= ================================================ FILE: main.go ================================================ package main import ( "context" "fmt" "github.com/mojocn/felix/api" "github.com/mojocn/felix/model" "github.com/mojocn/felix/socks5ws" "log" "log/slog" "os" "os/signal" "syscall" "time" ) var ( buildTime, gitHash string userUUID = "53881505-c10c-464a-8949-e57184a576a9" url = "ws://demo.libragen.cn/5sdfasdf" protocol = "socks5e" // or vless ) func main() { log.SetFlags(log.Lmicroseconds | log.Lshortfile) slog.SetLogLoggerLevel(slog.LevelDebug) model.DB() appCfg := model.Cfg() app, err := socks5ws.NewClientLocalSocks5Server(fmt.Sprintf("127.0.0.1:%d", appCfg.PortSocks5), "GeoLite2-Country.mmdb") if err != nil { log.Fatal(err) } slog.With("socks5", app.AddrSocks5).Info("socks5 server listening on") ctx, cancel := context.WithCancel(context.Background()) signalChan := make(chan os.Signal, 1) signal.Notify(signalChan, syscall.SIGINT, syscall.SIGABRT, syscall.SIGTERM, syscall.SIGQUIT, syscall.SIGKILL) httpS := api.AdminServer(fmt.Sprintf("127.0.0.1:%d", appCfg.PortHttp)) go func() { if err := httpS.ListenAndServe(); err != nil { log.Fatal(err) } }() go func() { sig := <-signalChan fmt.Printf("\nReceived signal: %s\n", sig) cancel() // Cancel the context // Shutdown the server with a timeout shutdownCtx, shutdownCancel := context.WithTimeout(ctx, 2*time.Second) defer shutdownCancel() if err := httpS.Shutdown(shutdownCtx); err != nil { log.Fatalf("Server Shutdown Failed:%+v", err) } }() app.Run(ctx) } ================================================ FILE: model/config.go ================================================ package model import "log/slog" type Config struct { PortSocks5 int `json:"port_socks5"` PortHttp int `json:"port_http"` AuthUser string `json:"auth_user"` AuthPass string `json:"auth_pass"` } var ( cfg *Config defCfg = Config{ PortSocks5: 1080, PortHttp: 1080 + 5, AuthUser: "admin", AuthPass: "admin", } ) func Cfg() *Config { if cfg == nil { row := new(Meta) row.Config = defCfg err := db.FirstOrCreate(&row).Error if err != nil { slog.Error("get config error", "err", err) } else { cfg = &defCfg } } return cfg } ================================================ FILE: model/db.go ================================================ package model import ( "gorm.io/driver/sqlite" // Sqlite driver based on CGO "gorm.io/gorm" ) var db *gorm.DB func initDb() { var err error db, err = gorm.Open(sqlite.Open("felix.sqlite3"), &gorm.Config{}) if err != nil { panic("failed to connect database") } migrate() } func DB() *gorm.DB { if db == nil { initDb() } return db } ================================================ FILE: model/helper.go ================================================ package model import ( "errors" "gorm.io/gorm" ) // PaginationQ gin handler query binding struct type PaginationQ struct { Ok bool `json:"ok"` Size int `form:"size" json:"size"` Page int `form:"page" json:"page"` Data interface{} `json:"data" comment:"muster be a pointer of slice gorm.Model"` // save pagination list Total int64 `json:"total"` } // SearchAll optimized pagination method for gorm func (p *PaginationQ) SearchAll(queryTx *gorm.DB) (data *PaginationQ, err error) { //99999 magic number for get all list without pagination if p.Size == 9999 || p.Size == 99999 { err = queryTx.Find(p.Data).Error p.Ok = err == nil return p, err } if p.Size < 1 { p.Size = 10 } if p.Page < 1 { p.Page = 1 } offset := p.Size * (p.Page - 1) err = queryTx.Count(&p.Total).Error if err != nil { return p, err } err = queryTx.Limit(p.Size).Offset(offset).Find(p.Data).Error p.Ok = err == nil return p, err } func crudAll(p *PaginationQ, queryTx *gorm.DB, list interface{}) (int64, error) { if p.Size < 1 { p.Size = 10 } if p.Page < 1 { p.Page = 1 } var total int64 err := queryTx.Count(&total).Error if err != nil { return 0, err } offset := p.Size * (p.Page - 1) err = queryTx.Limit(p.Size).Offset(offset).Find(list).Error if err != nil { return 0, err } return total, err } func crudOne(m interface{}) (err error) { if err := db.First(m).Error; errors.Is(err, gorm.ErrRecordNotFound) { return errors.New("resource is not found") } return nil } func crudDelete(m interface{}) (err error) { //WARNING When delete a record, you need to ensure it’s primary field has value, and GORM will use the primary key to delete the record, if primary field’s blank, GORM will delete all records for the model //primary key must be not zero value db := db.Unscoped().Delete(m) if err = db.Error; err != nil { return } if db.RowsAffected != 1 { return errors.New("resource is not found to destroy") } return nil } ================================================ FILE: model/migrate.go ================================================ package model import "log" func migrate() { if db == nil { log.Print("db is nil") return } for _, m := range []interface{}{&CfIp{}, &Meta{}, &Proxy{}} { if err := db.AutoMigrate(m); err != nil { log.Print(err) } } } ================================================ FILE: model/t_cfip.go ================================================ package model import ( "gorm.io/gorm" "time" ) type ModelBase struct { ID uint `gorm:"primarykey" json:"id"` CreatedAt time.Time `json:"created_at"` UpdatedAt time.Time `json:"updated_at"` DeletedAt gorm.DeletedAt `json:"deleted_at,omitempty" gorm:"index"` } type CfIp struct { ModelBase IP string `json:"ip" gorm:"type:varchar(15)"` Cidr string `json:"cidr" gorm:"type:varchar(18)"` Ports []int `json:"ports" gorm:"type:json;serializer:json"` } ================================================ FILE: model/t_meta.go ================================================ package model type Meta struct { ModelBase Config Config `json:"config" gorm:"type:json;serializer:json"` } ================================================ FILE: model/t_proxy.go ================================================ package model import ( "fmt" "strings" ) type Proxy struct { ModelBase Name string `json:"name" gorm:"varchar(255)"` Protocol string `json:"protocol" gorm:"varchar(16)"` //ws,wss,http2,tls,http3 Host string `json:"host" gorm:"varchar(255)"` Uri string `json:"uri" gorm:"varchar(255)"` Sni string `json:"sni" gorm:"varchar(255)"` Version string `json:"version" gorm:"varchar(16)"` // one socks5 UserID string `json:"user_id"` Password string `json:"password"` TrafficKb int64 `json:"traffic_kb" gorm:"default:0"` SpeedMs int64 `json:"speed_ms" gorm:"default:0"` Status string `json:"status" gorm:"varchar(16);default:''"` //active, inactive } func (p *Proxy) IsActive() bool { return p.Status == "active" } func (p *Proxy) RelayURL() string { switch p.Protocol { case "ws": return fmt.Sprintf("ws://%s/%s", p.Host, strings.TrimPrefix(p.Uri, "/")) case "wss": return fmt.Sprintf("wss://%s/%s", p.Host, strings.TrimPrefix(p.Uri, "/")) case "tcp+tls": return fmt.Sprintf("tcp-tls://%s/%s", p.Host, strings.TrimPrefix(p.Uri, "/")) default: return "" } } ================================================ FILE: socks5ws/app.go ================================================ package socks5ws import ( "context" "errors" "fmt" "github.com/mojocn/felix/model" "github.com/mojocn/felix/util" "io" "log" "log/slog" "net" "sync" "time" ) type ClientLocalSocks5Server struct { AddrSocks5 string geo *util.GeoIP Timeout time.Duration proxy *model.Proxy } func NewClientLocalSocks5Server(addr, geoIpPath string) (*ClientLocalSocks5Server, error) { geo, err := util.NewGeoIP(geoIpPath) if err != nil { return nil, err } return &ClientLocalSocks5Server{ AddrSocks5: addr, geo: geo, Timeout: 5 * time.Minute, }, nil } func (ss *ClientLocalSocks5Server) fetchActiveProxy() { var proxies []model.Proxy err := model.DB().Find(&proxies).Error if err != nil { slog.Error("failed to get proxy setting", "err", err.Error()) return } if len(proxies) == 0 { slog.Error("no proxy setting found") return } ss.proxy = &proxies[0] for _, proxy := range proxies { if proxy.IsActive() { ss.proxy = &proxy break } } } func (ss *ClientLocalSocks5Server) Run(ctx context.Context) { ss.fetchActiveProxy() listener, err := net.Listen("tcp", ss.AddrSocks5) if err != nil { listener, err = net.Listen("tcp4", "127.0.0.1:0") } if err != nil { log.Fatalf("Failed to listen on %s: %v", ss.AddrSocks5, err) } ss.AddrSocks5 = listener.Addr().String() slog.Info("socks5 server listening on", "addr", ss.AddrSocks5) defer listener.Close() log.Println("SOCKS5 server listening on: " + ss.AddrSocks5) //proxySettingOn(ss.AddrSocks5) //defer proxySettingOff() for { select { case <-ctx.Done(): log.Println("socks5 server exit") return default: conn, err := listener.Accept() if err != nil { log.Printf("Failed to accept connection: %v", err) continue } go ss.handleConnection(ctx, conn) } } } func (ss *ClientLocalSocks5Server) socks5HandShake(conn net.Conn) error { buf := make([]byte, 2) if _, err := io.ReadFull(conn, buf); err != nil { return fmt.Errorf("failed to read version and nmethods: %w", err) } if buf[0] != socks5Version { return fmt.Errorf("socks5 only. unsupported SOCKS version: %d", buf[0]) } // Read the supported authentication methods nMethods := int(buf[1]) nMethodsData := make([]byte, nMethods) if _, err := io.ReadFull(conn, nMethodsData); err != nil { return fmt.Errorf("failed to read methods: %w", err) } // Select no authentication (0x00) if _, err := conn.Write([]byte{socks5Version, 0x00}); err != nil { return fmt.Errorf("failed to write method selection: %w", err) } return nil } func (ss *ClientLocalSocks5Server) socks5Request(conn net.Conn) (*Socks5Request, error) { buf := make([]byte, 8<<10) n, err := conn.Read(buf) if err != nil { return nil, fmt.Errorf("failed to read request: %w", err) } data := buf[:n] if len(data) < 4 { return nil, fmt.Errorf("request too short") } return parseSocks5Request(data, ss.geo) } func (ss *ClientLocalSocks5Server) handleConnection(outerCtx context.Context, conn net.Conn) { defer conn.Close() // the outer for loop is not suitable for defer, so defer close here ctx, cf := context.WithTimeout(outerCtx, ss.Timeout) defer cf() err := ss.socks5HandShake(conn) if err != nil { slog.Error("failed to handshake", "err", err.Error()) socks5Response(conn, net.IPv4zero, 0, socks5ReplyFail) return } req, err := ss.socks5Request(conn) if err != nil { slog.Error("failed to parse socks5 request", "err", err.Error()) socks5Response(conn, net.IPv4zero, 0, socks5ReplyFail) return } req.Logger().Info("remote target") if req.socks5Cmd == socks5CmdConnect { //tcp relayTcpSvr, err := ss.dispatchRelayTcpServer(ctx, req) if err != nil { slog.Error("failed to dispatch relay tcp server", "err", err.Error()) socks5Response(conn, net.IPv4zero, 0, socks5ReplyFail) return } socks5Response(conn, net.IPv4zero, 0, socks5ReplyOkay) defer relayTcpSvr.Close() ss.pipeTcp(ctx, conn, relayTcpSvr) return } else if req.socks5Cmd == socks5CmdUdpAssoc { udpH, err := NewRelayUdpDirect(conn) if err != nil { slog.Error("failed to create udp handler", "err", err.Error()) socks5Response(conn, net.IPv4zero, 0, socks5ReplyFail) return } defer udpH.Close() udpH.PipeUdp() return } else if req.socks5Cmd == socks5CmdBind { relayBind(conn, req) return } else { err = fmt.Errorf("unknown command: %d", req.socks5Cmd) slog.Error("unknown command", "err", err.Error()) socks5Response(conn, net.IPv4zero, 0, socks5ReplyFail) } } func (ss *ClientLocalSocks5Server) shouldGoDirect(req *Socks5Request) (goDirect bool) { if req.CountryCode == "CN" || req.CountryCode == "" { //empty means geo ip failed or local address return true } return false } func (ss *ClientLocalSocks5Server) dispatchRelayTcpServer(ctx context.Context, req *Socks5Request) (io.ReadWriteCloser, error) { if ss.shouldGoDirect(req) { req.Logger().Info("go direct") return NewRelayTcpDirect(req) } return NewRelayTcpSocks5e(ctx, ss.proxy, req) } func (ss *ClientLocalSocks5Server) pipeTcp(ctx context.Context, s5 net.Conn, relayRw io.ReadWriter) { wg := sync.WaitGroup{} wg.Add(2) go func() { span := slog.With("fn", "ws -> s5") defer func() { span.Debug("wg1 done") wg.Done() }() for { select { case <-ctx.Done(): span.Info("ctx.Done exit") return default: //ws.SetReadDeadline(time.Now().Add(1 * time.Second)) buf := make([]byte, 8<<10) n, err := relayRw.Read(buf) if err != nil { span.Error("relay read", "err", err.Error()) return } _, err = s5.Write(buf[:n]) if err != nil { span.Error("s5 write", "err", err.Error()) return } } } }() go func() { // s5 -> ws span := slog.With("fn", "s5 -> ws") defer func() { span.Debug("wg2 done") wg.Done() }() for { select { case <-ctx.Done(): span.Debug("ctx.Done exit") return default: buf := make([]byte, 8<<10) //s5.SetReadDeadline(time.Now().Add(20 * time.Millisecond)) n, err := s5.Read(buf) if errors.Is(err, io.EOF) { slog.Info("s5 read EOF") return } if err != nil { et := fmt.Sprintf("%T", err) span.With("errType", et).Error("s5 read", "err", err.Error()) return } //ws.SetWriteDeadline(time.Now().Add(1 * time.Second)) n, err = relayRw.Write(buf[:n]) if err != nil { span.Error("relay write", "err", err.Error()) return } } } }() wg.Wait() slog.Debug("2 goroutines is Done") } ================================================ FILE: socks5ws/const.go ================================================ package socks5ws import ( "log/slog" "net" ) const ( socks5Version = 0x05 socks5ReplyOkay = 0x00 socks5ReplyFail = 0x01 socks5ReplyReserved = 0x00 socks5CmdConnect = 0x01 socks5CmdBind = 0x02 socks5CmdUdpAssoc = 0x03 socks5AtypeIPv4 = 0x01 socks5AtypeDomain = 0x03 socks5AtypeIPv6 = 0x04 socks5UdpFragNotSupported = 0x00 socks5UdpFragEnd = 0x80 bufferSize = 64 << 10 ) func socks5Response(conn net.Conn, ipv4 net.IP, port int, socks5OkayOrFail byte) { if socks5OkayOrFail != socks5ReplyOkay { ipv4 = net.IPv4zero port = 0 } if ipv4 == nil { ipv4 = net.IPv4zero } if port < 0 || port > 65535 { port = 0 } response := []byte{socks5Version, socks5OkayOrFail, socks5ReplyReserved, socks5AtypeIPv4, ipv4[0], ipv4[1], ipv4[2], ipv4[3], byte(port >> 8), byte(port & 0xff)} _, err := conn.Write(response) if err != nil { slog.Error("socks5 request rely failed to write", "err", err.Error()) } } ================================================ FILE: socks5ws/relay_svr.go ================================================ package socks5ws import "io" type RelayTcp interface { io.Reader io.Writer io.Closer } ================================================ FILE: socks5ws/relay_tcp_direct.go ================================================ package socks5ws import "net" var _ RelayTcp = (*RelayTcpDirect)(nil) type RelayTcpDirect struct { conn net.Conn } func NewRelayTcpDirect(req *Socks5Request) (*RelayTcpDirect, error) { conn, err := net.Dial("tcp", req.addr()) if err != nil { return nil, err } return &RelayTcpDirect{conn: conn}, nil } func (r *RelayTcpDirect) Read(p []byte) (n int, err error) { return r.conn.Read(p) } func (r *RelayTcpDirect) Write(p []byte) (n int, err error) { return r.conn.Write(p) } func (r *RelayTcpDirect) Close() error { return r.conn.Close() } ================================================ FILE: socks5ws/relay_tcp_socks5e.go ================================================ package socks5ws import ( "context" "github.com/gorilla/websocket" "github.com/mojocn/felix/model" "log/slog" "time" ) var _ RelayTcp = (*RelayTcpSocks5e)(nil) type RelayTcpSocks5e struct { cfg *model.Proxy req *Socks5Request conn *websocket.Conn } func NewRelayTcpSocks5e(ctx context.Context, cfg *model.Proxy, req *Socks5Request) (*RelayTcpSocks5e, error) { ws, err := webSocketConn(ctx, cfg, req) if err != nil { return nil, err } ws.SetCloseHandler(func(code int, text string) error { slog.Debug("ws has closed", "code", code, "text", text) return nil }) return &RelayTcpSocks5e{cfg: cfg, req: req, conn: ws}, nil } func (r RelayTcpSocks5e) Read(data []byte) (n int, err error) { if r.conn != nil { _, p, err := r.conn.ReadMessage() if err != nil { slog.Error("failed to read ws", "err", err.Error()) } return copy(data, p), err } return 0, nil } func (r RelayTcpSocks5e) Write(data []byte) (n int, err error) { if r.conn != nil { err = r.conn.WriteMessage(websocket.BinaryMessage, data) if err != nil { slog.Error("failed to write ws", "err", err.Error()) } return len(data), err } return 0, nil } func (r RelayTcpSocks5e) Close() error { if r.conn != nil { err := r.conn.WriteControl(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""), time.Now().Add(time.Millisecond*20)) if err != nil { slog.Error("failed to close ws", "err", err.Error()) } return r.conn.Close() } return nil } ================================================ FILE: socks5ws/relay_udp_direct.go ================================================ package socks5ws import ( "errors" "fmt" "io" "log" "log/slog" "net" "sort" "sync" "time" ) type RelayUdpDirect struct { s5 net.Conn relayUdp *net.UDPConn // Reassembly queue for fragmented UDP packets. mu sync.Mutex fragments map[string][]*udpPacket // Map of DstAddr to fragments highestFrag map[string]byte // Track highest FRAG value for each DstAddr timers map[string]*time.Timer // Map of DstAddr to reassembly timer timerDuration time.Duration // Timer duration } func (ud *RelayUdpDirect) addFragment(clientAddr *net.UDPAddr, frag *udpPacket) { ud.mu.Lock() defer ud.mu.Unlock() clientDstAddr := ud.clientDstAddrAsID(clientAddr, frag.dstAddr()) // Initialize fragment queue and timer if not already present. if _, exists := ud.fragments[clientDstAddr]; !exists { ud.fragments[clientDstAddr] = []*udpPacket{} ud.highestFrag[clientDstAddr] = socks5UdpFragNotSupported ud.startTimer(clientDstAddr) } // Update highest FRAG value. if frag.Frag > ud.highestFrag[clientDstAddr] { ud.highestFrag[clientDstAddr] = frag.Frag } // Add fragment to the queue. ud.fragments[clientDstAddr] = append(ud.fragments[clientDstAddr], frag) // Check if this is the final fragment (end-of-fragment sequence). if frag.Frag == socks5UdpFragEnd || frag.Frag == socks5UdpFragNotSupported { // High-order bit indicates end of sequence. ud.assembleThenPipeUdp(clientAddr, frag.dstAddr()) } } func (ud *RelayUdpDirect) startTimer(ClientDstAddr string) { if timer, exists := ud.timers[ClientDstAddr]; exists { timer.Stop() } ud.timers[ClientDstAddr] = time.AfterFunc(ud.timerDuration, func() { ud.mu.Lock() defer ud.mu.Unlock() delete(ud.fragments, ClientDstAddr) delete(ud.highestFrag, ClientDstAddr) delete(ud.timers, ClientDstAddr) }) } func (ud *RelayUdpDirect) clientDstAddrAsID(clientAddr *net.UDPAddr, dstAddr string) string { return fmt.Sprintf("%s/%s", clientAddr, dstAddr) } func (ud *RelayUdpDirect) assembleThenPipeUdp(clientAddr *net.UDPAddr, dstAddr string) { var data []byte clientDstAddr := ud.clientDstAddrAsID(clientAddr, dstAddr) fragments := ud.fragments[clientDstAddr] // Sort fragments by FRAG value. sort.Slice(fragments, func(i, j int) bool { return fragments[i].Frag < fragments[j].Frag }) for _, frag := range fragments { data = append(data, frag.Data...) } comboPacket := fragments[0] comboPacket.Data = data // Clean up after successful reassembly. delete(ud.fragments, clientDstAddr) delete(ud.highestFrag, clientDstAddr) if timer, exists := ud.timers[clientDstAddr]; exists { timer.Stop() delete(ud.timers, clientDstAddr) } ud.segmentPipe(comboPacket, clientAddr) } func (ud *RelayUdpDirect) PipeUdp() { buf := make([]byte, bufferSize) for { n, clientAddr, err := ud.relayUdp.ReadFromUDP(buf) if errors.Is(err, io.EOF) { return } //I will not verify the `clientAddr` because this SOCKS5 proxy is intended for local relay to bypass the GFW. if err != nil { slog.Error("Error reading UDP data", "err", err.Error()) continue } packet, err := parseUDPData(buf[:n]) if err != nil { log.Println("Error parsing UDP data", err) continue } ud.addFragment(clientAddr, packet) } } func (ud *RelayUdpDirect) segmentPipe(comboPacket *udpPacket, clientAddr *net.UDPAddr) { resp, err := forwardUDPData(comboPacket) if err != nil { slog.Error("Error forwarding UDP data", "err", err.Error()) return } header := comboPacket.ResponseData(resp) _, err = ud.relayUdp.WriteToUDP(header, clientAddr) if err != nil { slog.Error("Error sending UDP response", "err", err.Error()) } } func NewRelayUdpDirect(s5 net.Conn) (*RelayUdpDirect, error) { udpAddr := &net.UDPAddr{IP: net.IPv4zero, Port: 0} udpConn, err := net.ListenUDP("udp", udpAddr) if err != nil { return nil, fmt.Errorf("failed to bind UDP socket: %w", err) } ud := &RelayUdpDirect{ s5: s5, relayUdp: udpConn, mu: sync.Mutex{}, fragments: make(map[string][]*udpPacket), highestFrag: make(map[string]byte), timers: make(map[string]*time.Timer), timerDuration: time.Second * 60, } boundAddr := udpConn.LocalAddr().(*net.UDPAddr) response := []byte{ socks5Version, socks5ReplyOkay, socks5ReplyReserved, socks5AtypeIPv4, boundAddr.IP[0], boundAddr.IP[1], boundAddr.IP[2], boundAddr.IP[3], byte(boundAddr.Port >> 8), byte(boundAddr.Port & 0xFF), } _, err = ud.s5.Write(response) if err != nil { return nil, fmt.Errorf("failed to send response to client: %w", err) } return ud, nil } func forwardUDPData(udpPacket *udpPacket) ([]byte, error) { conn, err := net.DialUDP("udp", nil, udpPacket.addr()) if err != nil { return nil, err } defer conn.Close() _, err = conn.Write(udpPacket.Data) if err != nil { return nil, err } buf := make([]byte, bufferSize) n, _, err := conn.ReadFromUDP(buf) if err != nil { return nil, err } return buf[:n], nil } type udpPacket struct { RSV [2]byte // reserved Frag byte // fragment AType byte // dst address type Addr []byte // dst address Port []byte // dst port Data []byte // payload } func (p udpPacket) ResponseData(payload []byte) []byte { header := []byte{p.RSV[0], p.RSV[1], 0, p.AType} header = append(header, p.Addr...) header = append(header, p.Port...) return append(header, payload...) } func parseUDPData(data []byte) (*udpPacket, error) { if len(data) < 4 { return nil, fmt.Errorf("invalid UDP packet") } // parse header var packet = udpPacket{ RSV: [2]byte{data[0], data[1]}, Frag: data[2], AType: data[3], } switch packet.AType { case socks5AtypeIPv4: if len(data) < 10 { return nil, fmt.Errorf("invalid IPv4 UDP packet") } packet.Addr = data[4 : 4+net.IPv4len] packet.Port = data[4+net.IPv4len : 4+net.IPv4len+2] packet.Data = data[4+net.IPv4len+2:] case socks5AtypeIPv6: if len(data) < 22 { return nil, fmt.Errorf("invalid IPv6 UDP packet") } packet.Addr = data[4 : 4+net.IPv6len] packet.Port = data[4+net.IPv6len : 4+net.IPv6len+2] packet.Data = data[4+net.IPv6len+2:] case socks5AtypeDomain: if len(data) < 7 { return nil, fmt.Errorf("invalid domain UDP packet") } addrLen := int(data[4]) packet.Addr = data[5 : 5+addrLen] packet.Port = data[5+addrLen : 5+addrLen+2] packet.Data = data[5+addrLen+2:] default: return nil, fmt.Errorf("unsupported address type: %d", packet.AType) } return &packet, nil } func (p udpPacket) ip() net.IP { switch p.AType { case socks5AtypeIPv4, socks5AtypeIPv6: return p.Addr case socks5AtypeDomain: ips, err := net.LookupIP(string(p.Addr)) if err != nil { slog.Error("failed to resolve domain", "err", err.Error()) return net.IPv4zero } if len(ips) == 0 { return net.IPv4zero } return ips[0] default: return net.IPv4zero } } func (p udpPacket) port() int { return int(p.Port[0])<<8 + int(p.Port[1]) } func (p udpPacket) addr() *net.UDPAddr { return &net.UDPAddr{IP: p.ip(), Port: p.port()} } func (p udpPacket) dstAddr() string { return fmt.Sprintf("%s:%d", p.ip(), p.port()) } func (ud *RelayUdpDirect) Close() { //s5 has already been closed in outside if ud.relayUdp != nil { err := ud.relayUdp.Close() if err != nil { log.Println("close udp conn failed: ", err) } } } ================================================ FILE: socks5ws/socks5_bind.go ================================================ package socks5ws import ( "io" "log/slog" "net" "sync" ) func relayBind(s5 net.Conn, _ *Socks5Request) { bindListener, err := net.Listen("tcp4", ":0") if err != nil { slog.Error("bind tcp failed", "err", err) socks5Response(s5, net.IPv4zero, 0, socks5ReplyFail) return } defer bindListener.Close() //first reply localAddr := bindListener.Addr().(*net.TCPAddr) socks5Response(s5, localAddr.IP, localAddr.Port, socks5ReplyOkay) targetConn, err := bindListener.Accept() if err != nil { slog.Error("bind tcp failed", "err", err) return } defer targetConn.Close() //sec reply targetAddr := targetConn.RemoteAddr().(*net.TCPAddr) socks5Response(s5, targetAddr.IP, targetAddr.Port, socks5ReplyOkay) var wg sync.WaitGroup wg.Add(2) go func() { defer wg.Done() _, err := io.Copy(targetConn, s5) if err != nil { slog.Error("bind tcp failed", "err", err) } }() go func() { defer wg.Done() _, err := io.Copy(s5, targetConn) if err != nil { slog.Error("bind tcp failed", "err", err) } }() wg.Wait() } ================================================ FILE: socks5ws/socks5_connect.go ================================================ package socks5ws ================================================ FILE: socks5ws/socks5_req.go ================================================ package socks5ws import ( "fmt" "github.com/google/uuid" "github.com/mojocn/felix/util" "log/slog" "net" ) type Socks5Request struct { id string socks5Cmd byte socks5Atyp byte dstAddr []byte dstPort []byte CountryCode string //iso country code } func parseSocks5Request(data []byte, geo *util.GeoIP) (*Socks5Request, error) { id := uuid.NewString() info := &Socks5Request{id: id} if data[0] != socks5Version { return nil, fmt.Errorf("unsupported SOCKS version: %d", data[0]) } if data[1] == socks5CmdConnect { info.socks5Cmd = socks5CmdConnect } else if data[1] == socks5CmdUdpAssoc { info.socks5Cmd = socks5CmdUdpAssoc } else { //BIND is not supported return nil, fmt.Errorf("unsupported command: %d", data[1]) } if data[2] != socks5ReplyReserved { return nil, fmt.Errorf("RSV must be 0x00") } if data[3] == socks5AtypeIPv4 { if len(data) < 10 { return nil, fmt.Errorf("request too short for atyp IPv4") } info.socks5Atyp = socks5AtypeIPv4 info.dstAddr = data[4:8] info.dstPort = data[8:10] } else if data[3] == socks5AtypeDomain { if len(data) < 5 { return nil, fmt.Errorf("request too short for atyp Domain") } addrLen := int(data[4]) info.socks5Atyp = socks5AtypeDomain info.dstAddr = data[5 : 5+addrLen] info.dstPort = data[5+addrLen : 5+addrLen+2] } else if data[3] == socks5AtypeIPv6 { if len(data) < 22 { return nil, fmt.Errorf("request too short for atyp IPv6") } info.socks5Atyp = socks5AtypeIPv6 info.dstAddr = data[4:20] info.dstPort = data[20:22] } else { return nil, fmt.Errorf("unsupported address type: %d", data[3]) } //only get country code for connect command if info.socks5Cmd == socks5CmdConnect { code, err := geo.Country(info.host()) if err != nil { info.Logger().Error("failed to get country code", "err", err.Error()) } else { info.CountryCode = code } } return info, nil } func (s Socks5Request) host() string { addr := "" if s.socks5Atyp == socks5AtypeIPv4 || s.socks5Atyp == socks5AtypeIPv6 { addr = net.IP(s.dstAddr).String() } else if s.socks5Atyp == socks5AtypeDomain { addr = string(s.dstAddr) } else { addr = string(s.dstAddr) } return addr } func (s Socks5Request) addr() string { return fmt.Sprintf("%s:%s", s.host(), s.port()) } func (s Socks5Request) cmd() string { cmd := "unknown" if s.socks5Cmd == socks5CmdConnect { cmd = "connect" } else if s.socks5Cmd == socks5CmdUdpAssoc { cmd = "udp" } else if s.socks5Cmd == socks5CmdBind { cmd = "bind" } return cmd } func (s Socks5Request) Network() string { cmd := "unknown" if s.socks5Cmd == socks5CmdConnect { cmd = "tcp" } else if s.socks5Cmd == socks5CmdUdpAssoc { cmd = "udp" } else if s.socks5Cmd == socks5CmdBind { cmd = "bind" } return cmd } func (s Socks5Request) aType() string { return fmt.Sprintf("%v", s.socks5Atyp) } func (s Socks5Request) port() string { port := int(s.dstPort[0])<<8 + int(s.dstPort[1]) return fmt.Sprintf("%v", port) } func (s Socks5Request) Logger() *slog.Logger { return slog.With("reqId", s.id, "cmd", s.cmd(), "atyp", s.aType(), "ip", s.host(), "port", s.port(), "country", s.CountryCode) } func (s Socks5Request) String() string { return fmt.Sprintf("socks5Cmd: %v, socks5Atyp: %v, dstAddr: %v, dstPort: %v, country: %s", s.cmd(), s.aType(), s.host(), s.port(), s.CountryCode) } func (s Socks5Request) addressBytes() []byte { if s.socks5Atyp == socks5AtypeDomain { return append([]byte{byte(len(s.dstAddr))}, s.dstAddr...) } return s.dstAddr } ================================================ FILE: socks5ws/socks5_udp_associate.go ================================================ package socks5ws ================================================ FILE: socks5ws/websocket.go ================================================ package socks5ws import ( "context" "crypto/tls" "fmt" "github.com/gorilla/websocket" "github.com/mojocn/felix/model" "log/slog" "net/http" ) const ( browserAgent = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36" ) func webSocketConn(ctx context.Context, proxy *model.Proxy, req *Socks5Request) (*websocket.Conn, error) { wsDialer := websocket.DefaultDialer headers := http.Header{} headers.Set("Authorization", proxy.UserID) headers.Set("User-Agent", browserAgent) if proxy.Sni != "" { headers.Set("Host", proxy.Sni) wsDialer.TLSClientConfig = &tls.Config{ ServerName: proxy.Sni, // Set the SNI to the hostname of the server } } headers.Set("x-req-id", req.id) headers.Set("x-dst-network", "tcp") headers.Set("x-dst-addr", req.host()) headers.Set("x-dst-port", req.port()) headers.Set("x-dst-version", "socks5") // socks5proxy.Version url := proxy.RelayURL() slog.Debug("connecting to remote proxy server", "url", url) ws, resp, err := websocket.DefaultDialer.DialContext(ctx, url, headers) if err != nil { return nil, fmt.Errorf("failed to connect to remote proxy server: %s ,error:%v", proxy.RelayURL(), err) } if resp.StatusCode != http.StatusSwitchingProtocols { return nil, fmt.Errorf("failed to connect to remote proxy server: %s ,error:%v", proxy.RelayURL(), err) } return ws, nil } ================================================ FILE: util/browse_open.go ================================================ package util import ( "os/exec" "runtime" ) func BrowserOpen(url string) error { var cmd string var args []string switch runtime.GOOS { case "windows": cmd = "cmd" args = []string{"/c", "start"} case "darwin": cmd = "open" default: // "linux", "freebsd", "openbsd", "netbsd" cmd = "xdg-open" } args = append(args, url) return exec.Command(cmd, args...).Start() } ================================================ FILE: util/cf_ip.go ================================================ package util import ( "encoding/json" "fmt" "io" "log" "net" "net/http" "time" ) //https://api.cloudflare.com/client/v4/ips //https://api.cloudflare.com/client/v4/ips?networks=jdcloud type CfIP struct { Ipv4Cidrs []string `json:"ipv4_cidrs"` Ipv6Cidrs []string `json:"ipv6_cidrs"` ReachableIPs chan string } var cfIpNode *CfIP func singletonCfIP() *CfIP { if cfIpNode == nil { var err error cfIpNode, err = NewCfIP() if err != nil { log.Printf("Error getting cf ip: %v\n", err) } } return cfIpNode } func NewCfIP() (*CfIP, error) { resp, err := http.Get("https://api.cloudflare.com/client/v4/ips") if err != nil { return nil, fmt.Errorf("get cf ip failed %w", err) } if resp.StatusCode != http.StatusOK { return nil, fmt.Errorf("get cf ip failed %s", resp.Status) } defer resp.Body.Close() all, err := io.ReadAll(resp.Body) if err != nil { return nil, fmt.Errorf("read cf ip failed %w", err) } result := struct { Result struct { Ipv4Cidrs []string `json:"ipv4_cidrs"` Ipv6Cidrs []string `json:"ipv6_cidrs"` Etag string `json:"etag"` } `json:"result"` Success bool `json:"success"` Errors []interface{} `json:"errors"` Messages []interface{} `json:"messages"` }{} err = json.Unmarshal(all, &result) if err != nil { return nil, fmt.Errorf("unmarshal cf ip failed %w", err) } return &CfIP{ Ipv4Cidrs: result.Result.Ipv4Cidrs, Ipv6Cidrs: result.Result.Ipv4Cidrs, ReachableIPs: make(chan string), }, nil } func (ci CfIP) IsCf(ip net.IP) bool { for _, cidr := range append(ci.Ipv4Cidrs, ci.Ipv6Cidrs...) { _, ipNet, err := net.ParseCIDR(cidr) if err != nil { log.Printf("Error parsing Cidr: %v\n", err) continue } if ipNet.Contains(ip) { return true } } return false } func (ci CfIP) AllIps(fn func(ip, cidr string)) { for _, cidr := range append(ci.Ipv4Cidrs, ci.Ipv6Cidrs...) { ips, err := getIPsFromCIDR(cidr) if err != nil { fmt.Printf("Error parsing Cidr: %v\n", err) continue } for _, ip := range ips { fn(ip, cidr) } } } //func (ci CfIP) CheckReachableIps() { // maxWorkers := runtime.GOMAXPROCS(0) * 64 // ips := ci.ips() // jobs := make(chan string, len(ips)) // resultChan := make(chan string, len(ips)) // var wg sync.WaitGroup // for i := 0; i < maxWorkers; i++ { // wg.Add(1) // go func() { // defer wg.Done() // for ip := range jobs { // if isReachable(ip, 443) { // resultChan <- ip // } // } // }() // } // for _, ip := range ci.ips() { // jobs <- ip // } // close(jobs) // wg.Wait() // var reachable []string // for ip := range resultChan { // reachable = append(reachable, ip) // } // fd, err := os.Create("cf_reachable_ips.txt") // if err != nil { // log.Println(err) // return // } // defer fd.Close() // fd.Write([]byte(strings.Join(reachable, "\n"))) //} func getIPsFromCIDR(cidr string) ([]string, error) { ip, ipNet, err := net.ParseCIDR(cidr) if err != nil { return nil, err } var ips []string for ip := ip.Mask(ipNet.Mask); ipNet.Contains(ip); inc(ip) { ips = append(ips, ip.String()) } // Remove network address and broadcast address return ips[1 : len(ips)-1], nil } func inc(ip net.IP) { for j := len(ip) - 1; j >= 0; j-- { ip[j]++ if ip[j] > 0 { break } } } func isReachable(ip string, port int) bool { timeout := time.Millisecond * 70 conn, err := net.DialTimeout("tcp", fmt.Sprintf("%s:%d", ip, port), timeout) if err != nil { log.Printf("Error connecting to %s:%d: %v\n", ip, port, err) return false } conn.Close() return true } ================================================ FILE: util/cf_ip_test.go ================================================ package util import "testing" func TestCfIP_CheckReachableIps(t *testing.T) { } ================================================ FILE: util/crypt_aes.go ================================================ package util import ( "bytes" "crypto/aes" "crypto/cipher" "encoding/base64" ) //https://tech.mojotv.cn/2019/06/28/golang-crypt#svekr // key length must be 16/24/32 func AesEncrypt(origData []byte, key string) (string, error) { // 转成字节数组 k := []byte(key) // 分组秘钥 block, err := aes.NewCipher(k) if err != nil { return "", err } // 获取秘钥块的长度 blockSize := block.BlockSize() // 补全码 origData = PKCS7Padding(origData, blockSize) // 加密模式 blockMode := cipher.NewCBCEncrypter(block, k[:blockSize]) // 创建数组 cryted := make([]byte, len(origData)) // 加密 blockMode.CryptBlocks(cryted, origData) return base64.RawURLEncoding.EncodeToString(cryted), nil } func AesDecrypt(cryted string, key string) ([]byte, error) { // 转成字节数组 crytedByte, err := base64.RawURLEncoding.DecodeString(cryted) if err != nil { return nil, err } k := []byte(key) // 分组秘钥 block, err := aes.NewCipher(k) if err != nil { return nil, err } // 获取秘钥块的长度 blockSize := block.BlockSize() // 加密模式 blockMode := cipher.NewCBCDecrypter(block, k[:blockSize]) // 创建数组 orig := make([]byte, len(crytedByte)) // 解密 blockMode.CryptBlocks(orig, crytedByte) // 去补全码 orig = PKCS7UnPadding(orig) return orig, nil } //补码 func PKCS7Padding(ciphertext []byte, blocksize int) []byte { padding := blocksize - len(ciphertext)%blocksize padtext := bytes.Repeat([]byte{byte(padding)}, padding) return append(ciphertext, padtext...) } //去码 func PKCS7UnPadding(origData []byte) []byte { length := len(origData) unpadding := int(origData[length-1]) return origData[:(length - unpadding)] } ================================================ FILE: util/crypt_aes_test.go ================================================ package util import "testing" func TestAesDecryptEn(t *testing.T) { key := RandStringWordC(32) msg := RandomString(12) code, err := AesEncrypt([]byte(msg), key) if err != nil { t.Error(err) } tMsg, err := AesDecrypt(code, key) if err != nil { t.Error(err) } if string(tMsg) != msg { t.Error("aes failed") } } ================================================ FILE: util/crypt_des.go ================================================ package util import ( "bytes" "crypto/des" "encoding/hex" "errors" ) func ZeroPadding(ciphertext []byte, blockSize int) []byte { padding := blockSize - len(ciphertext)%blockSize padtext := bytes.Repeat([]byte{0}, padding) return append(ciphertext, padtext...) } func ZeroUnPadding(origData []byte) []byte { return bytes.TrimFunc(origData, func(r rune) bool { return r == rune(0) }) } func DesEncrypt(text string, key []byte) (string, error) { src := []byte(text) block, err := des.NewCipher(key) if err != nil { return "", err } bs := block.BlockSize() src = ZeroPadding(src, bs) if len(src)%bs != 0 { return "", errors.New("Need a multiple of the blocksize") } out := make([]byte, len(src)) dst := out for len(src) > 0 { block.Encrypt(dst, src[:bs]) src = src[bs:] dst = dst[bs:] } return hex.EncodeToString(out), nil } func DesDecrypt(decrypted string, key []byte) (string, error) { src, err := hex.DecodeString(decrypted) if err != nil { return "", err } block, err := des.NewCipher(key) if err != nil { return "", err } out := make([]byte, len(src)) dst := out bs := block.BlockSize() if len(src)%bs != 0 { return "", errors.New("crypto/cipher: input not full blocks") } for len(src) > 0 { block.Decrypt(dst, src[:bs]) src = src[bs:] dst = dst[bs:] } out = ZeroUnPadding(out) return string(out), nil } ================================================ FILE: util/enable_socks5_darwin.go ================================================ package util import ( "bytes" "fmt" "os/exec" "strings" ) func proxySettingOn(socks5Addr string) { networkService := "Wi-Fi" // Change this to your active network service name proxyAddress := "127.0.0.1" // SOCKS5 proxy address proxyPort := "1080" // SOCKS5 proxy port // Disable the SOCKS proxy first (optional cleanup) disableCmd := exec.Command("networksetup", "-setsocksfirewallproxystate", networkService, "off") if err := disableCmd.Run(); err != nil { fmt.Printf("Failed to disable SOCKS proxy: %v\n", err) } // Set the SOCKS proxy cmd := exec.Command("networksetup", "-setsocksfirewallproxy", networkService, proxyAddress, proxyPort) if err := cmd.Run(); err != nil { fmt.Printf("Failed to set SOCKS proxy: %v\n", err) return } // Enable the SOCKS proxy enableCmd := exec.Command("networksetup", "-setsocksfirewallproxystate", networkService, "on") if err := enableCmd.Run(); err != nil { fmt.Printf("Failed to enable SOCKS proxy: %v\n", err) return } fmt.Println("SOCKS5 proxy configured successfully!") } func proxySettingOff() (string, error) { cmd := exec.Command("networksetup", "-listallnetworkservices") var out bytes.Buffer cmd.Stdout = &out if err := cmd.Run(); err != nil { return "", err } // List all network services services := strings.Split(out.String(), "\n") for _, service := range services { if service != "" { // Check if the service is active by getting the status statusCmd := exec.Command("networksetup", "-getinfo", service) var statusOut bytes.Buffer statusCmd.Stdout = &statusOut if err := statusCmd.Run(); err != nil { return "", err } // Check if the service has a valid IP address (active network) if strings.Contains(statusOut.String(), "IP address") { return service, nil } } } return "", fmt.Errorf("no active network service found") } ================================================ FILE: util/enable_socks5_linux.go ================================================ package util func proxySettingOn(socks5Addr string) { } func proxySettingOff(socks5Addr string) { } ================================================ FILE: util/enable_socks5_windows.go ================================================ package util import ( "fmt" "golang.org/x/sys/windows/registry" "log" ) func proxySettingOn(socks5Addr string) { // Open the registry key for proxy settings key, err := registry.OpenKey(registry.CURRENT_USER, `Software\Microsoft\Windows\CurrentVersion\Internet Settings`, registry.SET_VALUE) if err != nil { log.Fatalf("Error opening registry key: %v", err) } defer key.Close() // Enable proxy and set proxy server to SOCKS5 err = key.SetDWordValue("ProxyEnable", 1) // 1 to enable proxy if err != nil { log.Fatalf("Error enabling proxy: %v", err) } // Set the SOCKS5 proxy address (e.g., "socks=127.0.0.1:1080") err = key.SetStringValue("ProxyServer", "socks5://"+socks5Addr) if err != nil { log.Fatalf("Error setting proxy server: %v", err) } // Set the proxy override settings : *.cn;*.local // skipAddrs := "localhost;127.*;10.*;172.16.*;172.17.*;172.18.*;172.19.*;172.20.*;172.21.*;172.22.*;172.23.*;172.24.*;172.25.*;172.26.*;172.27.*;172.28.*;172.29.*;172.30.*;172.31.*;192.168.*;;*.cn" err = key.SetStringValue("ProxyOverride", skipAddrs) if err != nil { log.Fatalf("Error setting proxy override: %v", err) } // Optionally disable automatic proxy detection err = key.SetDWordValue("AutoDetect", 0) // 0 to disable if err != nil { log.Fatalf("Error disabling automatic proxy detection: %v", err) } fmt.Println("SOCKS5 proxy configuration applied successfully.") //cmd := exec.Command("netsh", "winhttp", "reset", "proxy") //err = cmd.Run() //if err != nil { // slog.Error("Error resetting proxy settings: ", err) //} //log.Println("Network settings refreshed.") } func proxySettingOff() { log.Print("Disabling SOCKS5 proxy settings...") // Open the registry key for proxy settings key, err := registry.OpenKey(registry.CURRENT_USER, `Software\Microsoft\Windows\CurrentVersion\Internet Settings`, registry.SET_VALUE) if err != nil { log.Fatalf("Error opening registry key: %v", err) } defer key.Close() // Enable proxy and set proxy server to SOCKS5 err = key.SetDWordValue("ProxyEnable", 0) // 1 to enable proxy if err != nil { log.Fatalf("Error enabling proxy: %v", err) } //cmd := exec.Command("netsh", "winhttp", "reset", "proxy") //err = cmd.Run() //if err != nil { // log.Fatalf("Error resetting proxy settings: %v", err) //} //log.Println("Network settings refreshed.") } ================================================ FILE: util/geo_ip.go ================================================ package util import ( "fmt" "github.com/oschwald/geoip2-golang" "net" ) type GeoIP struct { db *geoip2.Reader } func NewGeoIP(geoIpFilePath string) (*GeoIP, error) { if geoIpFilePath == "" { geoIpFilePath = "GeoLite2-Country.mmdb" //https://github.com/P3TERX/GeoLite.mmdb?tab=readme-ov-file } db, err := geoip2.Open(geoIpFilePath) if err != nil { return nil, err } return &GeoIP{db: db}, nil } func (g *GeoIP) Close() error { if g.db != nil { return g.db.Close() } return nil } func (g *GeoIP) Country(host string) (isoCountryCode string, err error) { if g == nil { return "", fmt.Errorf("geo databse is nil") } ip := net.ParseIP(host) if ip == nil { ips, err := net.LookupIP(host) if err != nil { return "", fmt.Errorf("failed to lookup IP: %w", err) } if len(ips) == 0 { return "", fmt.Errorf("no IP found for %s", host) } ip = ips[0] } record, err := g.db.Country(ip) if err != nil { return "", fmt.Errorf("failed to get Country: %w", err) } return record.Country.IsoCode, nil } ================================================ FILE: util/geo_ip_test.go ================================================ package util import ( "testing" ) func TestGeoDns_country(t *testing.T) { } ================================================ FILE: util/random_string.go ================================================ package util import ( "fmt" "math/rand" ) var ( stringMisc = []byte(".$#@&*_") stringDigit = []byte("1234567890") stringDigitLen = len(stringDigit) stringLword = []byte("abcdefghijklmnopqrstuvwxyz") stringLwordLen = len(stringLword) stringUWord = []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZ") stringUWordLen = len(stringUWord) stringCWord = []byte(fmt.Sprintf("%s%s", stringLword, stringUWord)) stringCWordLen = len(stringCWord) letterRunes = []byte(fmt.Sprintf("%s%s%s%s", stringDigit, stringLword, stringMisc, stringUWord)) letterRunesLen = len(letterRunes) ) func RandomString(n int) string { b := make([]byte, n) for i := range b { b[i] = letterRunes[rand.Intn(letterRunesLen)] } return string(b) } func RandStringWordL(n int) string { b := make([]byte, n) for i := range b { b[i] = stringLword[rand.Intn(stringLwordLen)] } return string(b) } func RandStringWordU(n int) string { b := make([]byte, n) for i := range b { b[i] = stringUWord[rand.Intn(stringUWordLen)] } return string(b) } func RandStringWordC(n int) string { b := make([]byte, n) for i := range b { b[i] = stringCWord[rand.Intn(stringCWordLen)] } return string(b) } func RandStringDigit(n int) string { b := make([]byte, n) for i := range b { b[i] = stringDigit[rand.Intn(stringDigitLen)] } return string(b) } ================================================ FILE: util/vless_data.go ================================================ package util import ( "encoding/binary" "errors" "fmt" "github.com/google/uuid" "log/slog" "net" ) type SchemaVLESS struct { userID uuid.UUID DstProtocol string //tcp or udp dstHost string dstHostType string //ipv6 or ipv4,domain dstPort uint16 Version byte payload []byte } func (h SchemaVLESS) UUID() string { return h.userID.String() } func (h SchemaVLESS) DataUdp() []byte { allData := make([]byte, 0) chunk := h.payload for index := 0; index < len(chunk); { if index+2 > len(chunk) { fmt.Println("Incomplete length buffer") return nil } lengthBuffer := chunk[index : index+2] udpPacketLength := binary.BigEndian.Uint16(lengthBuffer) if index+2+int(udpPacketLength) > len(chunk) { fmt.Println("Incomplete UDP packet") return nil } udpData := chunk[index+2 : index+2+int(udpPacketLength)] index = index + 2 + int(udpPacketLength) allData = append(allData, udpData...) } return allData } func (h SchemaVLESS) DataTcp() []byte { return h.payload } func (h SchemaVLESS) AddrUdp() *net.UDPAddr { return &net.UDPAddr{IP: h.HostIP(), Port: int(h.dstPort)} } func (h SchemaVLESS) HostIP() net.IP { ip := net.ParseIP(h.dstHost) if ip == nil { ips, err := net.LookupIP(h.dstHost) if err != nil { h.Logger().Error("failed to resolve domain", "err", err.Error()) return net.IPv4zero } if len(ips) == 0 { return net.IPv4zero } return ips[0] } return ip } func (h SchemaVLESS) HostPort() string { return net.JoinHostPort(h.dstHost, fmt.Sprintf("%d", h.dstPort)) } func (h SchemaVLESS) Logger() *slog.Logger { return slog.With("userID", h.userID.String(), "network", h.DstProtocol, "addr", h.HostPort()) } // VlessParse https://xtls.github.io/development/protocols/vless.html func VlessParse(buf []byte) (*SchemaVLESS, error) { payload := &SchemaVLESS{ userID: uuid.Nil, DstProtocol: "", dstHost: "", dstPort: 0, Version: 0, payload: nil, } if len(buf) < 24 { return payload, errors.New("invalid payload length") } payload.Version = buf[0] payload.userID = uuid.Must(uuid.FromBytes(buf[1:17])) extraInfoProtoBufLen := buf[17] command := buf[18+extraInfoProtoBufLen] switch command { case 1: payload.DstProtocol = "tcp" case 2: payload.DstProtocol = "udp" default: return payload, fmt.Errorf("command %d is not supported, command 01-tcp, 02-udp, 03-mux", command) } portIndex := 18 + extraInfoProtoBufLen + 1 payload.dstPort = binary.BigEndian.Uint16(buf[portIndex : portIndex+2]) addressIndex := portIndex + 2 addressType := buf[addressIndex] addressValueIndex := addressIndex + 1 switch addressType { case 1: // IPv4 if len(buf) < int(addressValueIndex+net.IPv4len) { return nil, fmt.Errorf("invalid IPv4 address length") } payload.dstHost = net.IP(buf[addressValueIndex : addressValueIndex+net.IPv4len]).String() payload.payload = buf[addressValueIndex+net.IPv4len:] payload.dstHostType = "ipv4" case 2: // domain addressLength := buf[addressValueIndex] addressValueIndex++ if len(buf) < int(addressValueIndex)+int(addressLength) { return nil, fmt.Errorf("invalid domain address length") } payload.dstHost = string(buf[addressValueIndex : int(addressValueIndex)+int(addressLength)]) payload.payload = buf[int(addressValueIndex)+int(addressLength):] payload.dstHostType = "domain" case 3: // IPv6 if len(buf) < int(addressValueIndex+net.IPv6len) { return nil, fmt.Errorf("invalid IPv6 address length") } payload.dstHost = net.IP(buf[addressValueIndex : addressValueIndex+net.IPv6len]).String() payload.payload = buf[addressValueIndex+net.IPv6len:] payload.dstHostType = "ipv6" default: return nil, fmt.Errorf("addressType %d is not supported", addressType) } return payload, nil }