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package bonafide
import (
"encoding/json"
"fmt"
"io"
"log"
"os"
"strings"
"time"
"0xacab.org/leap/bitmask-vpn/pkg/config"
)
type eipService struct {
Gateways []gatewayV3
defaultGateway string
Locations map[string]Location
OpenvpnConfiguration openvpnConfig `json:"openvpn_configuration"`
auth string
}
type eipServiceV1 struct {
Gateways []gatewayV1
defaultGateway string
Locations map[string]Location
OpenvpnConfiguration openvpnConfig `json:"openvpn_configuration"`
}
type gatewayV1 struct {
Capabilities struct {
Ports []string
Protocols []string
}
Host string
IPAddress string `json:"ip_address"`
Location string
}
type gatewayV3 struct {
Capabilities struct {
Transport []transportV3
}
Host string
IPAddress string `json:"ip_address"`
Location string
}
type Location struct {
CountryCode string `json:"country_code"`
Hemisphere string
Name string
Timezone string
}
type transportV3 struct {
Type string
Protocols []string
Ports []string
Options map[string]string
}
func (b *Bonafide) setupAuthentication(i interface{}) {
switch i.(type) {
case eipService:
switch auth := b.eip.auth; auth {
case "anon":
// Do nothing, we're set on initialization.
case "sip":
b.auth = &sipAuthentication{b.client, b.getURL("auth")}
default:
log.Printf("BUG: unknown authentication method %s", auth)
}
case eipServiceV1:
// Do nothing, no auth on v1.
}
}
func (b *Bonafide) fetchEipJSON() error {
eip3API := config.APIURL + "3/config/eip-service.json"
resp, err := b.client.Post(eip3API, "", nil)
for err != nil {
resp, err = b.client.Post(eip3API, "", nil)
if err != nil {
log.Println("Error fetching eip v3 json:" + eip3API)
if os.Getenv("DEBUG") == "1" {
log.Println(err)
}
// TODO it might be that we get no error, but an empty file or whatever done
// by DNS poisoning. Should try to parse the file.
uri := b.getURLNoDNS("eip")
resp, err = b.client.Post(uri, "", nil)
}
if err != nil {
log.Printf("Error again fetching eip v3 json: %v", err)
time.Sleep(retryFetchJSONSeconds * time.Second)
}
}
defer resp.Body.Close()
switch resp.StatusCode {
case 200:
b.eip, err = decodeEIP3(resp.Body)
case 404:
buf := make([]byte, 128)
resp.Body.Read(buf)
log.Printf("Error fetching eip v3 json")
eip1API := config.APIURL + "1/config/eip-service.json"
resp, err = b.client.Post(eip1API, "", nil)
if err != nil {
return err
}
defer resp.Body.Close()
if resp.StatusCode != 200 {
return fmt.Errorf("Get eip json has failed with status: %s", resp.Status)
}
b.eip, err = decodeEIP1(resp.Body)
default:
return fmt.Errorf("Get eip json has failed with status: %s", resp.Status)
}
if err != nil {
return err
}
b.setupAuthentication(b.eip)
return nil
}
func decodeEIP3(body io.Reader) (*eipService, error) {
var eip eipService
decoder := json.NewDecoder(body)
err := decoder.Decode(&eip)
return &eip, err
}
func decodeEIP1(body io.Reader) (*eipService, error) {
var eip1 eipServiceV1
decoder := json.NewDecoder(body)
err := decoder.Decode(&eip1)
if err != nil {
log.Printf("Error fetching eip v1 json: %v", err)
return nil, err
}
eip3 := eipService{
Gateways: make([]gatewayV3, len(eip1.Gateways)),
Locations: eip1.Locations,
OpenvpnConfiguration: eip1.OpenvpnConfiguration,
}
for _, g := range eip1.Gateways {
gateway := gatewayV3{
Host: g.Host,
IPAddress: g.IPAddress,
Location: g.Location,
}
gateway.Capabilities.Transport = []transportV3{
transportV3{
Type: "openvpn",
Ports: g.Capabilities.Ports,
Protocols: g.Capabilities.Protocols,
},
}
eip3.Gateways = append(eip3.Gateways, gateway)
}
return &eip3, nil
}
func (eip eipService) getGateways() []Gateway {
gws := []Gateway{}
for _, g := range eip.Gateways {
for _, t := range g.Capabilities.Transport {
gateway := Gateway{
Host: g.Host,
IPAddress: g.IPAddress,
Location: g.Location,
Ports: t.Ports,
Protocols: t.Protocols,
Options: t.Options,
Transport: t.Type,
LocationName: eip.Locations[g.Location].Name,
CountryCode: eip.Locations[g.Location].CountryCode,
}
gws = append(gws, gateway)
}
}
return gws
}
func (eip eipService) getOpenvpnArgs() []string {
args := []string{}
for arg, value := range 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
}
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