From fcc7514ec5f1b35068b1033d8ac4278c45043a80 Mon Sep 17 00:00:00 2001 From: Ruben Pollan Date: Fri, 8 Jun 2018 10:26:58 +0200 Subject: [feat] pure go bitmask vpn implemenation - Resolves: #42 --- bitmaskd/events.go | 50 ++++++++++++++++ bitmaskd/main.go | 163 +++++++++++++++++++++++++++++++++++++++++++++++++++++ bitmaskd/vpn.go | 92 ++++++++++++++++++++++++++++++ 3 files changed, 305 insertions(+) create mode 100644 bitmaskd/events.go create mode 100644 bitmaskd/main.go create mode 100644 bitmaskd/vpn.go (limited to 'bitmaskd') diff --git a/bitmaskd/events.go b/bitmaskd/events.go new file mode 100644 index 0000000..e97804c --- /dev/null +++ b/bitmaskd/events.go @@ -0,0 +1,50 @@ +// Copyright (C) 2018 LEAP +// +// 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 . + +package bitmask + +import ( + "log" + "net/http" +) + +const ( + statusEvent = "VPN_STATUS_CHANGED" +) + +func (b *Bitmask) eventsHandler() { + b.send("events", "register", statusEvent) + client := &http.Client{ + Timeout: 0, + } + for { + resJSON, err := send(b.apiToken, client, "events", "poll") + res, ok := resJSON.([]interface{}) + if err != nil || !ok || len(res) < 1 { + continue + } + event, ok := res[0].(string) + if !ok || event != statusEvent { + continue + } + + status, err := b.GetStatus() + if err != nil { + log.Printf("Error receiving status: %v", err) + continue + } + b.statusCh <- status + } +} diff --git a/bitmaskd/main.go b/bitmaskd/main.go new file mode 100644 index 0000000..2ff2268 --- /dev/null +++ b/bitmaskd/main.go @@ -0,0 +1,163 @@ +// Copyright (C) 2018 LEAP +// +// 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 . + +package bitmask + +import ( + "bytes" + "encoding/json" + "errors" + "io/ioutil" + "log" + "net/http" + "path" + "time" + + "0xacab.org/leap/bitmask-systray/bitmask" +) + +const ( + timeout = time.Second * 15 + url = "http://localhost:7070/API/" + headerAuth = "X-Bitmask-Auth" +) + +// Bitmask holds the bitmask client data +type Bitmask struct { + client *http.Client + apiToken string + statusCh chan string +} + +// Init the connection to bitmask +func Init() (*Bitmask, error) { + statusCh := make(chan string) + client := &http.Client{ + Timeout: timeout, + } + + err := waitForBitmaskd() + if err != nil { + return nil, err + } + + apiToken, err := getToken() + if err != nil { + return nil, err + } + + b := Bitmask{client, apiToken, statusCh} + go b.eventsHandler() + return &b, nil +} + +// GetStatusCh returns a channel that will recieve VPN status changes +func (b *Bitmask) GetStatusCh() <-chan string { + return b.statusCh +} + +// Close the connection to bitmask +func (b *Bitmask) Close() { + _, err := b.send("core", "stop") + if err != nil { + log.Printf("Got an error stopping bitmaskd: %v", err) + } +} + +// Version gets the bitmask version string +func (b *Bitmask) Version() (string, error) { + res, err := b.send("core", "version") + if err != nil { + return "", err + } + return res["version_core"].(string), nil +} + +func waitForBitmaskd() error { + var err error + for i := 0; i < 30; i++ { + resp, err := http.Post(url, "", nil) + if err == nil { + resp.Body.Close() + return nil + } + log.Printf("Bitmask is not ready (iteration %d): %v", i, err) + time.Sleep(1 * time.Second) + } + return err +} + +func (b *Bitmask) send(parts ...interface{}) (map[string]interface{}, error) { + resJSON, err := send(b.apiToken, b.client, parts...) + if err != nil { + return nil, err + } + result, ok := resJSON.(map[string]interface{}) + if !ok { + return nil, errors.New("Not valid response") + } + return result, nil +} + +func send(apiToken string, client *http.Client, parts ...interface{}) (interface{}, error) { + apiSection, _ := parts[0].(string) + reqBody, err := json.Marshal(parts[1:]) + if err != nil { + return nil, err + } + req, err := http.NewRequest("POST", url+apiSection, bytes.NewReader(reqBody)) + if err != nil { + return nil, err + } + req.Header.Add(headerAuth, apiToken) + + resp, err := client.Do(req) + if err != nil { + return nil, err + } + defer resp.Body.Close() + + resJSON, err := ioutil.ReadAll(resp.Body) + if err != nil { + return nil, err + } + return parseResponse(resJSON) +} + +func parseResponse(resJSON []byte) (interface{}, error) { + var response struct { + Result interface{} + Error string + } + err := json.Unmarshal(resJSON, &response) + if response.Error != "" { + return nil, errors.New(response.Error) + } + return response.Result, err +} + +func getToken() (string, error) { + var err error + path := path.Join(bitmask.ConfigPath, "authtoken") + for i := 0; i < 30; i++ { + b, err := ioutil.ReadFile(path) + if err == nil { + return string(b), nil + } + log.Printf("Auth token is not ready (iteration %d): %v", i, err) + time.Sleep(1 * time.Second) + } + return "", err +} diff --git a/bitmaskd/vpn.go b/bitmaskd/vpn.go new file mode 100644 index 0000000..aee5e8f --- /dev/null +++ b/bitmaskd/vpn.go @@ -0,0 +1,92 @@ +// Copyright (C) 2018 LEAP +// +// 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 . + +package bitmask + +import ( + "errors" + "log" +) + +// StartVPN for provider +func (b *Bitmask) StartVPN(provider string) error { + _, err := b.send("vpn", "start", provider) + return err +} + +// StopVPN or cancel +func (b *Bitmask) StopVPN() error { + _, err := b.send("vpn", "stop") + return err +} + +// GetStatus returns the VPN status +func (b *Bitmask) GetStatus() (string, error) { + res, err := b.send("vpn", "status") + if err != nil { + return "", err + } + return res["status"].(string), nil +} + +// InstallHelpers into the system +func (b *Bitmask) InstallHelpers() error { + _, err := b.send("vpn", "install") + return err +} + +// VPNCheck returns if the helpers are installed and up to date and if polkit is running +func (b *Bitmask) VPNCheck() (helpers bool, priviledge bool, err error) { + res, err := b.send("vpn", "check", "") + if err != nil { + return false, false, err + } + installed, ok := res["installed"].(bool) + if !ok { + log.Printf("Unexpected value for installed on 'vpn check': %v", res) + return false, false, errors.New("Invalid response format") + } + privcheck, ok := res["privcheck"].(bool) + if !ok { + log.Printf("Unexpected value for privcheck on 'vpn check': %v", res) + return installed, false, errors.New("Invalid response format") + } + return installed, privcheck, nil +} + +// ListGateways return the names of the gateways +func (b *Bitmask) ListGateways(provider string) ([]string, error) { + res, err := b.send("vpn", "list") + if err != nil { + return nil, err + } + + names := []string{} + locations, ok := res[provider].([]interface{}) + if !ok { + return nil, errors.New("Can't read the locations for provider " + provider) + } + for i := range locations { + loc := locations[i].(map[string]interface{}) + names = append(names, loc["name"].(string)) + } + return names, nil +} + +// UseGateway selects name as the default gateway +func (b *Bitmask) UseGateway(name string) error { + _, err := b.send("vpn", "locations", name) + return err +} -- cgit v1.2.3