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-rw-r--r--pkg/standalone/bonafide.go280
1 files changed, 0 insertions, 280 deletions
diff --git a/pkg/standalone/bonafide.go b/pkg/standalone/bonafide.go
deleted file mode 100644
index a3c0b22..0000000
--- a/pkg/standalone/bonafide.go
+++ /dev/null
@@ -1,280 +0,0 @@
-// 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 <http://www.gnu.org/licenses/>.
-
-package standalone
-
-import (
- "crypto/tls"
- "crypto/x509"
- "encoding/json"
- "fmt"
- "io"
- "io/ioutil"
- "log"
- "math/rand"
- "net/http"
- "sort"
- "strconv"
- "strings"
- "time"
-
- "0xacab.org/leap/bitmask-vpn/pkg/config"
-)
-
-const (
- certAPI = config.APIURL + "1/cert"
- eipAPI = config.APIURL + "1/config/eip-service.json"
- secondsPerHour = 60 * 60
- retryFetchJSONSeconds = 15
-)
-
-type bonafide struct {
- client httpClient
- tzOffsetHours int
- eip *eipService
- defaultGateway string
-}
-
-type httpClient interface {
- Post(url, contentType string, body io.Reader) (resp *http.Response, err error)
-}
-
-type eipService struct {
- Gateways []gateway
- Locations map[string]struct {
- CountryCode string
- Hemisphere string
- Name string
- Timezone string
- }
- OpenvpnConfiguration map[string]interface{} `json:"openvpn_configuration"`
-}
-
-type gateway struct {
- Capabilities struct {
- Ports []string
- Protocols []string
- }
- Host string
- IPAddress string `json:"ip_address"`
- Location string
-}
-
-type gatewayDistance struct {
- gateway gateway
- distance int
-}
-
-type geoLocation struct {
- IPAddress string `json:"ip"`
- Country string `json:"cc"`
- City string `json:"city"`
- Latitude float64 `json:"lat"`
- Longitude float64 `json:"lon"`
- SortedGateways []string `json:"gateways"`
-}
-
-func newBonafide() *bonafide {
- certs := x509.NewCertPool()
- certs.AppendCertsFromPEM(config.CaCert)
- client := &http.Client{
- Transport: &http.Transport{
- TLSClientConfig: &tls.Config{
- RootCAs: certs,
- },
- },
- }
- _, tzOffsetSeconds := time.Now().Zone()
- tzOffsetHours := tzOffsetSeconds / secondsPerHour
-
- return &bonafide{
- client: client,
- tzOffsetHours: tzOffsetHours,
- eip: nil,
- defaultGateway: "",
- }
-}
-
-func (b *bonafide) getCertPem() ([]byte, error) {
- resp, err := b.client.Post(certAPI, "", nil)
- if err != nil {
- return nil, err
- }
- defer resp.Body.Close()
- if resp.StatusCode != 200 {
- return nil, fmt.Errorf("get vpn cert has failed with status: %s", resp.Status)
- }
-
- return ioutil.ReadAll(resp.Body)
-}
-
-func (b *bonafide) getGateways() ([]gateway, error) {
- if b.eip == nil {
- err := b.fetchEipJSON()
- if err != nil {
- return nil, err
- }
- }
-
- return b.eip.Gateways, nil
-}
-
-func (b *bonafide) setDefaultGateway(name string) {
- b.defaultGateway = name
- b.sortGateways()
-}
-
-func (b *bonafide) getOpenvpnArgs() ([]string, error) {
- if b.eip == nil {
- err := b.fetchEipJSON()
- if err != nil {
- return nil, err
- }
- }
-
- args := []string{}
- for arg, value := range b.eip.OpenvpnConfiguration {
- switch v := value.(type) {
- case string:
- args = append(args, "--"+arg)
- args = append(args, strings.Split(v, " ")...)
- case bool:
- if v {
- args = append(args, "--"+arg)
- }
- default:
- log.Printf("Unknown openvpn argument type: %s - %v", arg, value)
- }
- }
- return args, nil
-}
-
-func (b *bonafide) fetchGeolocation() ([]string, error) {
- resp, err := b.client.Post(config.GeolocationAPI, "", nil)
- if err != nil {
- return nil, err
- }
- defer resp.Body.Close()
- if resp.StatusCode != 200 {
- return nil, fmt.Errorf("get geolocation failed with status: %s", resp.Status)
- }
-
- geo := &geoLocation{}
- dataJSON, err := ioutil.ReadAll(resp.Body)
- err = json.Unmarshal(dataJSON, &geo)
- if err != nil {
- _ = fmt.Errorf("get vpn cert has failed with status: %s", resp.Status)
- return nil, err
- }
-
- return geo.SortedGateways, nil
-
-}
-
-func (b *bonafide) fetchEipJSON() error {
- resp, err := b.client.Post(eipAPI, "", nil)
- for err != nil {
- log.Printf("Error fetching eip json: %v", err)
- time.Sleep(retryFetchJSONSeconds * time.Second)
- resp, err = b.client.Post(eipAPI, "", nil)
- }
- defer resp.Body.Close()
- if resp.StatusCode != 200 {
- return fmt.Errorf("get eip json has failed with status: %s", resp.Status)
- }
-
- var eip eipService
- decoder := json.NewDecoder(resp.Body)
- err = decoder.Decode(&eip)
- if err != nil {
- return err
- }
-
- b.eip = &eip
- b.sortGateways()
- return nil
-}
-
-func (b *bonafide) sortGatewaysByGeolocation(geolocatedGateways []string) []gatewayDistance {
- gws := []gatewayDistance{}
-
- for i, host := range geolocatedGateways {
- for _, gw := range b.eip.Gateways {
- if gw.Host == host {
- gws = append(gws, gatewayDistance{gw, i})
- }
- }
- }
- return gws
-}
-
-func (b *bonafide) sortGatewaysByTimezone() []gatewayDistance {
- gws := []gatewayDistance{}
-
- for _, gw := range b.eip.Gateways {
- distance := 13
- if gw.Location == b.defaultGateway {
- distance = -1
- } else {
- gwOffset, err := strconv.Atoi(b.eip.Locations[gw.Location].Timezone)
- if err != nil {
- log.Printf("Error sorting gateways: %v", err)
- } else {
- distance = tzDistance(b.tzOffsetHours, gwOffset)
- }
- }
- gws = append(gws, gatewayDistance{gw, distance})
- }
- rand.Seed(time.Now().UnixNano())
- cmp := func(i, j int) bool {
- if gws[i].distance == gws[j].distance {
- return rand.Intn(2) == 1
- }
- return gws[i].distance < gws[j].distance
- }
- sort.Slice(gws, cmp)
- return gws
-}
-
-func (b *bonafide) sortGateways() {
- gws := []gatewayDistance{}
-
- geolocatedGateways, _ := b.fetchGeolocation()
-
- if len(geolocatedGateways) > 0 {
- gws = b.sortGatewaysByGeolocation(geolocatedGateways)
- } else {
- log.Printf("Falling back to timezone heuristic for gateway selection")
- gws = b.sortGatewaysByTimezone()
- }
-
- for i, gw := range gws {
- b.eip.Gateways[i] = gw.gateway
- }
-}
-
-func tzDistance(offset1, offset2 int) int {
- abs := func(x int) int {
- if x < 0 {
- return -x
- }
- return x
- }
- distance := abs(offset1 - offset2)
- if distance > 12 {
- distance = 24 - distance
- }
- return distance
-}