Merge pull request #74 from Snawoot/mod_upgrade

Modules upgrade

.github/stale.yml

@@ -0,0 +1,17 @@
+# Number of days of inactivity before an issue becomes stale
+daysUntilStale: 60
+# Number of days of inactivity before a stale issue is closed
+daysUntilClose: 7
+# Issues with these labels will never be considered stale
+exemptLabels:
+  - pinned
+  - security
+# Label to use when marking an issue as stale
+staleLabel: wontfix
+# Comment to post when marking an issue as stale. Set to `false` to disable
+markComment: >
+  This issue has been automatically marked as stale because it has not had
+  recent activity. It will be closed if no further activity occurs. Thank you
+  for your contributions.
+# Comment to post when closing a stale issue. Set to `false` to disable
+closeComment: false

.github/workflows/docker-ci.yml

@@ -0,0 +1,58 @@
+name: docker-ci
+
+on:
+  push:
+    branches:
+      - 'master'
+  release:
+    types: [published]
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      -
+        name: Find Git Tag
+        id: tagger
+        uses: jimschubert/query-tag-action@v2
+        with:
+          include: 'v*'
+          exclude: '*-rc*'
+          commit-ish: 'HEAD'
+          skip-unshallow: 'true'
+          abbrev: 7
+      -
+        name: Determine image tag type
+        uses: haya14busa/action-cond@v1
+        id: imgtag
+        with:
+          cond: ${{ github.event_name == 'release' }}
+          if_true: ${{ secrets.DOCKERHUB_USERNAME }}/${{ github.event.repository.name }}:${{ github.event.release.tag_name }},${{ secrets.DOCKERHUB_USERNAME }}/${{ github.event.repository.name }}:latest
+          if_false: ${{ secrets.DOCKERHUB_USERNAME }}/${{ github.event.repository.name }}:latest
+      -
+        name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      -
+        name: Login to DockerHub
+        uses: docker/login-action@v1 
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm64,linux/386,linux/arm/v7
+          push: true
+          tags: ${{ steps.imgtag.outputs.value }}
+          build-args: 'GIT_DESC=${{steps.tagger.outputs.tag}}'

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang AS build
+FROM golang:1.19 AS build
 
 ARG GIT_DESC=undefined
 

Makefile

@@ -10,10 +10,11 @@ NDK_CC_ARM64 = $(abspath ../../ndk-toolchain-arm64/bin/aarch64-linux-android21-c
 
 GO := go
 
-src = $(wildcard *.go)
+src = $(wildcard *.go */*.go */*/*.go) go.mod go.sum
 
 native: bin-native
-all: bin-linux-amd64 bin-linux-386 bin-linux-arm \
+all: bin-linux-amd64 bin-linux-386 bin-linux-arm bin-linux-arm64 \
+	bin-linux-mips bin-linux-mipsle bin-linux-mips64 bin-linux-mips64le \
 	bin-freebsd-amd64 bin-freebsd-386 bin-freebsd-arm \
 	bin-netbsd-amd64 bin-netbsd-386 \
 	bin-openbsd-amd64 bin-openbsd-386 \
@@ -27,6 +28,11 @@ bin-native: $(OUTSUFFIX)
 bin-linux-amd64: $(OUTSUFFIX).linux-amd64
 bin-linux-386: $(OUTSUFFIX).linux-386
 bin-linux-arm: $(OUTSUFFIX).linux-arm
+bin-linux-arm64: $(OUTSUFFIX).linux-arm64
+bin-linux-mips: $(OUTSUFFIX).linux-mips
+bin-linux-mipsle: $(OUTSUFFIX).linux-mipsle
+bin-linux-mips64: $(OUTSUFFIX).linux-mips64
+bin-linux-mips64le: $(OUTSUFFIX).linux-mips64le
 bin-freebsd-amd64: $(OUTSUFFIX).freebsd-amd64
 bin-freebsd-386: $(OUTSUFFIX).freebsd-386
 bin-freebsd-arm: $(OUTSUFFIX).freebsd-arm
@@ -54,6 +60,21 @@ $(OUTSUFFIX).linux-386: $(src)
 $(OUTSUFFIX).linux-arm: $(src)
 	CGO_ENABLED=0 GOOS=linux GOARCH=arm $(GO) build $(BUILDOPTS) $(LDFLAGS) -o $@
 
+$(OUTSUFFIX).linux-arm64: $(src)
+	CGO_ENABLED=0 GOOS=linux GOARCH=arm64 $(GO) build $(BUILDOPTS) $(LDFLAGS) -o $@
+
+$(OUTSUFFIX).linux-mips: $(src)
+	CGO_ENABLED=0 GOOS=linux GOARCH=mips GOMIPS=softfloat $(GO) build $(BUILDOPTS) $(LDFLAGS) -o $@
+
+$(OUTSUFFIX).linux-mips64: $(src)
+	CGO_ENABLED=0 GOOS=linux GOARCH=mips64 GOMIPS=softfloat $(GO) build $(BUILDOPTS) $(LDFLAGS) -o $@
+
+$(OUTSUFFIX).linux-mipsle: $(src)
+	CGO_ENABLED=0 GOOS=linux GOARCH=mipsle GOMIPS=softfloat $(GO) build $(BUILDOPTS) $(LDFLAGS) -o $@
+
+$(OUTSUFFIX).linux-mips64le: $(src)
+	CGO_ENABLED=0 GOOS=linux GOARCH=mips64le GOMIPS=softfloat $(GO) build $(BUILDOPTS) $(LDFLAGS) -o $@
+
 $(OUTSUFFIX).freebsd-amd64: $(src)
 	CGO_ENABLED=0 GOOS=freebsd GOARCH=amd64 $(GO) build $(BUILDOPTS) $(LDFLAGS) -o $@
 
@@ -113,6 +134,11 @@ install:
 	bin-linux-amd64 \
 	bin-linux-386 \
 	bin-linux-arm \
+	bin-linux-arm64 \
+	bin-linux-mips \
+	bin-linux-mipsle \
+	bin-linux-mips64 \
+	bin-linux-mips64le \
 	bin-freebsd-amd64 \
 	bin-freebsd-386 \
 	bin-freebsd-arm \

README.md

@@ -5,7 +5,7 @@
 Standalone Hola proxy client. Just run it and it'll start a plain HTTP proxy server forwarding traffic through Hola proxies of your choice.
 By default the application listens on 127.0.0.1:8080.
 
-Application is capable to forward traffic via proxies in datacenters (flag `-proxy-type direct`, default) or via peer proxies on residental IPs (consumer ISP) in that country (flag `-proxy-type pool` or `-proxy-type lum`).
+Application is capable to forward traffic via proxies in datacenters (flag `-proxy-type direct`, default) or via peer proxies on residental IPs (consumer ISP) in that country (flag `-proxy-type lum`).
 
 ---
 
@@ -157,6 +157,7 @@ zagent248.hola.org,165.22.65.3,22222,22223,22224,22225,22226,digitalocean
 | Argument | Type | Description |
 | -------- | ---- | ----------- |
 | bind-address | String | HTTP proxy address to listen to (default "127.0.0.1:8080") |
+| cafile | String | use custom CA certificate bundle file |
 | country | String | desired proxy location (default "us") |
 | dont-use-trial | - | use regular ports instead of trial ports |
 | force-port-field | Number | force specific port field/num (example 24232 or lum) |
@@ -164,8 +165,12 @@ zagent248.hola.org,165.22.65.3,22222,22223,22224,22225,22226,digitalocean
 | list-countries | String | list available countries and exit |
 | list-proxies | - | output proxy list and exit |
 | proxy | String | sets base proxy to use for all dial-outs. Format: `<http\|https\|socks5\|socks5h>://[login:password@]host[:port]` Examples: `http://user:password@192.168.1.1:3128`, `socks5://10.0.0.1:1080` |
-| proxy-type | String | proxy type (Datacenter: direct, virt) (Residential: peer, lum, pool) (default "direct") |
+| proxy-type | String | proxy type (Datacenter: direct) (Residential: lum) (default "direct") |
 | resolver | String | DNS/DoH/DoT resolver to workaround Hola blocked hosts. See https://github.com/ameshkov/dnslookup/ for upstream DNS URL format. (default "https://cloudflare-dns.com/dns-query") |
 | rotate | Duration | rotate user ID once per given period (default 1h0m0s) |
-| timeout | Duration | timeout for network operations (default 10s) |
+| timeout | Duration | timeout for network operations (default 35s) |
 | verbosity | Number | logging verbosity (10 - debug, 20 - info, 30 - warning, 40 - error, 50 - critical) (default 20) |
+
+## See also
+
+* [Project wiki](https://github.com/Snawoot/hola-proxy/wiki)

credservice.go

@@ -25,7 +25,7 @@ func CredService(interval, timeout time.Duration,
 	}
 
 	tx_res, tx_err := EnsureTransaction(context.Background(), timeout, func(ctx context.Context, client *http.Client) bool {
-		tunnels, user_uuid, err = Tunnels(ctx, client, country, proxytype, DEFAULT_LIST_LIMIT)
+		tunnels, user_uuid, err = Tunnels(ctx, logger, client, country, proxytype, DEFAULT_LIST_LIMIT)
 		if err != nil {
 			logger.Error("Configuration bootstrap error: %v. Retrying with the fallback mechanism...", err)
 			return false
@@ -55,7 +55,7 @@ func CredService(interval, timeout time.Duration,
 			<-ticker.C
 			logger.Info("Rotating credentials...")
 			tx_res, tx_err := EnsureTransaction(context.Background(), timeout, func(ctx context.Context, client *http.Client) bool {
-				tuns, user_uuid, err = Tunnels(ctx, client, country, proxytype, DEFAULT_LIST_LIMIT)
+				tuns, user_uuid, err = Tunnels(ctx, logger, client, country, proxytype, DEFAULT_LIST_LIMIT)
 				if err != nil {
 					logger.Error("Credential rotation error: %v. Retrying with the fallback mechanism...", err)
 					return false

csrand.go

@@ -10,6 +10,7 @@ type secureRandomSource struct{}
 var RandomSource secureRandomSource
 
 var int63Limit = big.NewInt(0).Lsh(big.NewInt(1), 63)
+var int64Limit = big.NewInt(0).Lsh(big.NewInt(1), 64)
 
 func (_ secureRandomSource) Seed(_ int64) {
 }
@@ -21,3 +22,11 @@ func (_ secureRandomSource) Int63() int64 {
 	}
 	return randNum.Int64()
 }
+
+func (_ secureRandomSource) Uint64() uint64 {
+	randNum, err := crand.Int(crand.Reader, int64Limit)
+	if err != nil {
+		panic(err)
+	}
+	return randNum.Uint64()
+}

go.mod

@@ -1,11 +1,33 @@
 module github.com/Snawoot/hola-proxy
 
-go 1.13
+go 1.19
 
 require (
-	github.com/AdguardTeam/dnsproxy v0.25.0
+	github.com/AdguardTeam/dnsproxy v0.46.5
 	github.com/campoy/unique v0.0.0-20180121183637-88950e537e7e
-	github.com/google/uuid v1.1.1
-	github.com/miekg/dns v1.1.29
-	golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e
+	github.com/google/uuid v1.3.0
+	github.com/miekg/dns v1.1.50
+	golang.org/x/net v0.5.0
+)
+
+require (
+	github.com/AdguardTeam/golibs v0.11.2 // indirect
+	github.com/aead/chacha20 v0.0.0-20180709150244-8b13a72661da // indirect
+	github.com/aead/poly1305 v0.0.0-20180717145839-3fee0db0b635 // indirect
+	github.com/ameshkov/dnscrypt/v2 v2.2.5 // indirect
+	github.com/ameshkov/dnsstamps v1.0.3 // indirect
+	github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 // indirect
+	github.com/golang/mock v1.6.0 // indirect
+	github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38 // indirect
+	github.com/lucas-clemente/quic-go v0.31.0 // indirect
+	github.com/marten-seemann/qpack v0.3.0 // indirect
+	github.com/marten-seemann/qtls-go1-18 v0.1.3 // indirect
+	github.com/marten-seemann/qtls-go1-19 v0.1.1 // indirect
+	github.com/onsi/ginkgo/v2 v2.2.0 // indirect
+	golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90 // indirect
+	golang.org/x/exp v0.0.0-20221019170559-20944726eadf // indirect
+	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
+	golang.org/x/sys v0.4.0 // indirect
+	golang.org/x/text v0.6.0 // indirect
+	golang.org/x/tools v0.1.12 // indirect
 )

go.sum

@@ -1,72 +1,97 @@
-github.com/AdguardTeam/dnsproxy v0.25.0 h1:BTUPrrwB01GeQW5d2Xx4pH5HOFXcZxN1MTeNXXuy6vQ=
-github.com/AdguardTeam/dnsproxy v0.25.0/go.mod h1:z2EljVLJQXFGZcP9pWABftXm9UxpLNqls7H6bMcIvEY=
-github.com/AdguardTeam/golibs v0.4.0 h1:4VX6LoOqFe9p9Gf55BeD8BvJD6M6RDYmgEiHrENE9KU=
-github.com/AdguardTeam/golibs v0.4.0/go.mod h1:skKsDKIBB7kkFflLJBpfGX+G8QFTx0WKUzB6TIgtUj4=
+github.com/AdguardTeam/dnsproxy v0.46.5 h1:TiJZhwaIDDaKkqEfJ9AD9aroFjcHN8oEbKB8WfTjSIs=
+github.com/AdguardTeam/dnsproxy v0.46.5/go.mod h1:yKBVgFlE6CqTQtye++3e7SATaMPc4Ixij+KkHsM6HhM=
+github.com/AdguardTeam/golibs v0.11.2 h1:JbQB1Dg2JWStXgHh1QqBbOLWnP4t9oDjppoBH6TVXSE=
+github.com/AdguardTeam/golibs v0.11.2/go.mod h1:87bN2x4VsTritptE3XZg9l8T6gznWsIxHBcQ1DeRIXA=
 github.com/aead/chacha20 v0.0.0-20180709150244-8b13a72661da h1:KjTM2ks9d14ZYCvmHS9iAKVt9AyzRSqNU1qabPih5BY=
 github.com/aead/chacha20 v0.0.0-20180709150244-8b13a72661da/go.mod h1:eHEWzANqSiWQsof+nXEI9bUVUyV6F53Fp89EuCh2EAA=
 github.com/aead/poly1305 v0.0.0-20180717145839-3fee0db0b635 h1:52m0LGchQBBVqJRyYYufQuIbVqRawmubW3OFGqK1ekw=
 github.com/aead/poly1305 v0.0.0-20180717145839-3fee0db0b635/go.mod h1:lmLxL+FV291OopO93Bwf9fQLQeLyt33VJRUg5VJ30us=
-github.com/ameshkov/dnscrypt v1.1.0 h1:2vAt5dD6ZmqlAxEAfzRcLBnkvdf8NI46Kn9InSwQbSI=
-github.com/ameshkov/dnscrypt v1.1.0/go.mod h1:ikduAxNLCTEfd1AaCgpIA5TgroIVQ8JY3Vb095fiFJg=
-github.com/ameshkov/dnsstamps v1.0.1 h1:LhGvgWDzhNJh+kBQd/AfUlq1vfVe109huiXw4JhnPug=
-github.com/ameshkov/dnsstamps v1.0.1/go.mod h1:Ii3eUu73dx4Vw5O4wjzmT5+lkCwovjzaEZZ4gKyIH5A=
-github.com/beefsack/go-rate v0.0.0-20180408011153-efa7637bb9b6/go.mod h1:6YNgTHLutezwnBvyneBbwvB8C82y3dcoOj5EQJIdGXA=
+github.com/ameshkov/dnscrypt/v2 v2.2.5 h1:Ju1gQeez+6XLtk/b/k3RoJ2t+Ls+BSItLTZjZeedneY=
+github.com/ameshkov/dnscrypt/v2 v2.2.5/go.mod h1:Cu5GgMvCR10BeXgACiGDwXyOpfMktsSIidml1XBp6uM=
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 github.com/campoy/unique v0.0.0-20180121183637-88950e537e7e h1:V9a67dfYqPLAvzk5hMQOXYJlZ4SLIXgyKIE+ZiHzgGQ=
 github.com/campoy/unique v0.0.0-20180121183637-88950e537e7e/go.mod h1:9IOqJGCPMSc6E5ydlp5NIonxObaeu/Iub/X03EKPVYo=
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 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/go-test/deep v1.0.5/go.mod h1:QV8Hv/iy04NyLBxAdO9njL0iVPN1S4d/A3NVv1V36o8=
-github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
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-github.com/joomcode/errorx v1.0.1 h1:CalpDWz14ZHd68fIqluJasJosAewpz2TFaJALrUxjrk=
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 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
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+google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
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-gopkg.in/yaml.v2 v2.2.8 h1:obN1ZagJSUGI0Ek/LBmuj4SNLPfIny3KsKFopxRdj10=
-gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

holaapi.go

@@ -3,6 +3,8 @@ package main
 import (
 	"bytes"
 	"context"
+	"crypto/tls"
+	"crypto/x509"
 	"encoding/base64"
 	"encoding/hex"
 	"encoding/json"
@@ -21,8 +23,8 @@ import (
 	"github.com/google/uuid"
 )
 
-const USER_AGENT = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/89.0.4389.72 Safari/537.36"
-const EXT_VER = "1.181.350"
+const USER_AGENT = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36"
+const EXT_VER = "1.186.562"
 const EXT_BROWSER = "chrome"
 const PRODUCT = "cws"
 const CCGI_URL = "https://client.hola.org/client_cgi/"
@@ -33,6 +35,9 @@ const LOGIN_PREFIX = "user-uuid-"
 const FALLBACK_CONF_URL = "https://www.dropbox.com/s/jemizcvpmf2qb9v/cloud_failover.conf?dl=1"
 const AGENT_SUFFIX = ".hola.org"
 
+const MinTunnelsPause = 10 * time.Second
+const MaxTunnelsPause = 25 * time.Second
+
 var TemporaryBanError = errors.New("temporary ban detected")
 var PermanentBanError = errors.New("permanent ban detected")
 
@@ -313,6 +318,7 @@ func GetFallbackProxies(ctx context.Context) (*FallbackConfig, error) {
 }
 
 func Tunnels(ctx context.Context,
+	logger *CondLogger,
 	client *http.Client,
 	country string,
 	proxy_type string,
@@ -324,6 +330,9 @@ func Tunnels(ctx context.Context,
 		reterr = err
 		return
 	}
+	sleepDuration := time.Duration(RandRange(float64(MinTunnelsPause), float64(MaxTunnelsPause)))
+	logger.Info("Sleeping for %v...", sleepDuration)
+	time.Sleep(sleepDuration)
 	res, reterr = zgettunnels(ctx, client, user_uuid, initres.Key, country, proxy_type, limit)
 	return
 }
@@ -333,10 +342,16 @@ var baseDialer ContextDialer = &net.Dialer{
 	KeepAlive: 30 * time.Second,
 }
 
+var tlsConfig *tls.Config
+
 func UpdateHolaDialer(dialer ContextDialer) {
 	baseDialer = dialer
 }
 
+func UpdateHolaTLSConfig(config *tls.Config) {
+	tlsConfig = config
+}
+
 // Returns default http client with a proxy override
 func httpClientWithProxy(agent *FallbackAgent) *http.Client {
 	t := &http.Transport{
@@ -345,10 +360,15 @@ func httpClientWithProxy(agent *FallbackAgent) *http.Client {
 		IdleConnTimeout:       90 * time.Second,
 		TLSHandshakeTimeout:   10 * time.Second,
 		ExpectContinueTimeout: 1 * time.Second,
+		TLSClientConfig:       tlsConfig,
 	}
 	var dialer ContextDialer = baseDialer
+	var rootCAs *x509.CertPool
+	if tlsConfig != nil {
+		rootCAs = tlsConfig.RootCAs
+	}
 	if agent != nil {
-		dialer = NewProxyDialer(agent.NetAddr(), agent.Hostname(), nil, dialer)
+		dialer = NewProxyDialer(agent.NetAddr(), agent.Hostname(), rootCAs, nil, dialer)
 	}
 	t.DialContext = dialer.DialContext
 	return &http.Client{

hooks/build

@@ -1,2 +0,0 @@
-#!/bin/bash
-docker build --build-arg GIT_DESC="$(git describe)" -f "$DOCKERFILE_PATH" -t "$IMAGE_NAME" .

main.go

@@ -1,9 +1,12 @@
 package main
 
 import (
+	"crypto/tls"
+	"crypto/x509"
 	"errors"
 	"flag"
 	"fmt"
+	"io/ioutil"
 	"log"
 	"net"
 	"net/http"
@@ -50,6 +53,7 @@ type CLIArgs struct {
 	force_port_field                        string
 	showVersion                             bool
 	proxy                                   string
+	caFile                                  string
 }
 
 func parse_args() CLIArgs {
@@ -62,9 +66,9 @@ func parse_args() CLIArgs {
 	flag.StringVar(&args.bind_address, "bind-address", "127.0.0.1:8080", "HTTP proxy listen address")
 	flag.IntVar(&args.verbosity, "verbosity", 20, "logging verbosity "+
 		"(10 - debug, 20 - info, 30 - warning, 40 - error, 50 - critical)")
-	flag.DurationVar(&args.timeout, "timeout", 10*time.Second, "timeout for network operations")
+	flag.DurationVar(&args.timeout, "timeout", 35*time.Second, "timeout for network operations")
 	flag.DurationVar(&args.rotate, "rotate", 1*time.Hour, "rotate user ID once per given period")
-	flag.StringVar(&args.proxy_type, "proxy-type", "direct", "proxy type: direct or peer or lum or virt or pool") // or skip but not mentioned
+	flag.StringVar(&args.proxy_type, "proxy-type", "direct", "proxy type: direct or lum") // or skip but not mentioned
 	// skip would be used something like this: `./bin/hola-proxy -proxy-type skip -force-port-field 24232 -country ua.peer` for debugging
 	flag.StringVar(&args.resolver, "resolver", "https://cloudflare-dns.com/dns-query",
 		"DNS/DoH/DoT resolver to workaround Hola blocked hosts. "+
@@ -74,6 +78,7 @@ func parse_args() CLIArgs {
 	flag.StringVar(&args.proxy, "proxy", "", "sets base proxy to use for all dial-outs. "+
 		"Format: <http|https|socks5|socks5h>://[login:password@]host[:port] "+
 		"Examples: http://user:password@192.168.1.1:3128, socks5://10.0.0.1:1080")
+	flag.StringVar(&args.caFile, "cafile", "", "use custom CA certificate bundle file")
 	flag.Parse()
 	if args.country == "" {
 		arg_fail("Country can't be empty string.")
@@ -87,15 +92,6 @@ func parse_args() CLIArgs {
 	return args
 }
 
-func proxyFromURLWrapper(u *url.URL, next xproxy.Dialer) (xproxy.Dialer, error) {
-	cdialer, ok := next.(ContextDialer)
-	if !ok {
-		return nil, errors.New("only context dialers are accepted")
-	}
-
-	return ProxyDialerFromURL(u, cdialer)
-}
-
 func run() int {
 	args := parse_args()
 	if args.showVersion {
@@ -120,6 +116,33 @@ func run() int {
 		Timeout:   30 * time.Second,
 		KeepAlive: 30 * time.Second,
 	}
+
+	var caPool *x509.CertPool
+	if args.caFile != "" {
+		caPool = x509.NewCertPool()
+		certs, err := ioutil.ReadFile(args.caFile)
+		if err != nil {
+			mainLogger.Error("Can't load CA file: %v", err)
+			return 15
+		}
+		if ok := caPool.AppendCertsFromPEM(certs); !ok {
+			mainLogger.Error("Can't load certificates from CA file")
+			return 15
+		}
+		UpdateHolaTLSConfig(&tls.Config{
+			RootCAs: caPool,
+		})
+	}
+
+	proxyFromURLWrapper := func(u *url.URL, next xproxy.Dialer) (xproxy.Dialer, error) {
+		cdialer, ok := next.(ContextDialer)
+		if !ok {
+			return nil, errors.New("only context dialers are accepted")
+		}
+
+		return ProxyDialerFromURL(u, caPool, cdialer)
+	}
+
 	if args.proxy != "" {
 		xproxy.RegisterDialerType("http", proxyFromURLWrapper)
 		xproxy.RegisterDialerType("https", proxyFromURLWrapper)
@@ -141,7 +164,7 @@ func run() int {
 		return print_countries(args.timeout)
 	}
 	if args.list_proxies {
-		return print_proxies(args.country, args.proxy_type, args.limit, args.timeout)
+		return print_proxies(mainLogger, args.country, args.proxy_type, args.limit, args.timeout)
 	}
 
 	mainLogger.Info("hola-proxy client version %s is starting...", version)
@@ -163,8 +186,8 @@ func run() int {
 		mainLogger.Critical("Unable to determine proxy endpoint: %v", err)
 		return 5
 	}
-	handlerDialer := NewProxyDialer(endpoint.NetAddr(), endpoint.TLSName, auth, dialer)
-	requestDialer := NewPlaintextDialer(endpoint.NetAddr(), endpoint.TLSName, dialer)
+	handlerDialer := NewProxyDialer(endpoint.NetAddr(), endpoint.TLSName, caPool, auth, dialer)
+	requestDialer := NewPlaintextDialer(endpoint.NetAddr(), endpoint.TLSName, caPool, dialer)
 	mainLogger.Info("Endpoint: %s", endpoint.URL().String())
 	mainLogger.Info("Starting proxy server...")
 	handler := NewProxyHandler(handlerDialer, requestDialer, auth, resolver, proxyLogger)

plaintext.go

@@ -12,13 +12,15 @@ type PlaintextDialer struct {
 	fixedAddress  string
 	tlsServerName string
 	next          ContextDialer
+	caPool        *x509.CertPool
 }
 
-func NewPlaintextDialer(address, tlsServerName string, next ContextDialer) *PlaintextDialer {
+func NewPlaintextDialer(address, tlsServerName string, caPool *x509.CertPool, next ContextDialer) *PlaintextDialer {
 	return &PlaintextDialer{
 		fixedAddress:  address,
 		tlsServerName: tlsServerName,
 		next:          next,
+		caPool:        caPool,
 	}
 }
 
@@ -45,6 +47,7 @@ func (d *PlaintextDialer) DialContext(ctx context.Context, network, address stri
 				opts := x509.VerifyOptions{
 					DNSName:       d.tlsServerName,
 					Intermediates: x509.NewCertPool(),
+					Roots:         d.caPool,
 				}
 				for _, cert := range cs.PeerCertificates[1:] {
 					opts.Intermediates.AddCert(cert)

resolver.go

@@ -1,9 +1,10 @@
 package main
 
 import (
+	"time"
+
 	"github.com/AdguardTeam/dnsproxy/upstream"
 	"github.com/miekg/dns"
-	"time"
 )
 
 type Resolver struct {
@@ -13,7 +14,7 @@ type Resolver struct {
 const DOT = 0x2e
 
 func NewResolver(address string, timeout time.Duration) (*Resolver, error) {
-	opts := upstream.Options{Timeout: timeout}
+	opts := &upstream.Options{Timeout: timeout}
 	u, err := upstream.AddressToUpstream(address, opts)
 	if err != nil {
 		return nil, err

snapcraft.yaml

@@ -1,5 +1,5 @@
 name: hola-proxy
-version: '1.5.1'
+version: '1.5.7'
 summary: Standalone Hola proxy client.
 description: |
   Standalone Hola proxy client. Just run it and it'll start plain HTTP proxy server forwarding traffic via Hola proxies of your choice.

upstream.go

@@ -38,18 +38,20 @@ type ProxyDialer struct {
 	tlsServerName string
 	auth          AuthProvider
 	next          ContextDialer
+	caPool        *x509.CertPool
 }
 
-func NewProxyDialer(address, tlsServerName string, auth AuthProvider, nextDialer ContextDialer) *ProxyDialer {
+func NewProxyDialer(address, tlsServerName string, caPool *x509.CertPool, auth AuthProvider, nextDialer ContextDialer) *ProxyDialer {
 	return &ProxyDialer{
 		address:       address,
 		tlsServerName: tlsServerName,
 		auth:          auth,
 		next:          nextDialer,
+		caPool:        caPool,
 	}
 }
 
-func ProxyDialerFromURL(u *url.URL, next ContextDialer) (*ProxyDialer, error) {
+func ProxyDialerFromURL(u *url.URL, caPool *x509.CertPool, next ContextDialer) (*ProxyDialer, error) {
 	host := u.Hostname()
 	port := u.Port()
 	tlsServerName := ""
@@ -79,7 +81,7 @@ func ProxyDialerFromURL(u *url.URL, next ContextDialer) (*ProxyDialer, error) {
 			return authHeader
 		}
 	}
-	return NewProxyDialer(address, tlsServerName, auth, next), nil
+	return NewProxyDialer(address, tlsServerName, caPool, auth, next), nil
 }
 
 func (d *ProxyDialer) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
@@ -105,6 +107,7 @@ func (d *ProxyDialer) DialContext(ctx context.Context, network, address string)
 				opts := x509.VerifyOptions{
 					DNSName:       d.tlsServerName,
 					Intermediates: x509.NewCertPool(),
+					Roots:         d.caPool,
 				}
 				for _, cert := range cs.PeerCertificates[1:] {
 					opts.Intermediates.AddCert(cert)

utils.go

@@ -8,6 +8,7 @@ import (
 	"errors"
 	"fmt"
 	"io"
+	"math/rand"
 	"net"
 	"net/http"
 	"net/url"
@@ -132,14 +133,14 @@ func print_countries(timeout time.Duration) int {
 	return 0
 }
 
-func print_proxies(country string, proxy_type string, limit uint, timeout time.Duration) int {
+func print_proxies(logger *CondLogger, country string, proxy_type string, limit uint, timeout time.Duration) int {
 	var (
 		tunnels   *ZGetTunnelsResponse
 		user_uuid string
 		err       error
 	)
 	tx_res, tx_err := EnsureTransaction(context.Background(), timeout, func(ctx context.Context, client *http.Client) bool {
-		tunnels, user_uuid, err = Tunnels(ctx, client, country, proxy_type, limit)
+		tunnels, user_uuid, err = Tunnels(ctx, logger, client, country, proxy_type, limit)
 		if err != nil {
 			fmt.Fprintf(os.Stderr, "Transaction error: %v. Retrying with the fallback mechanism...\n", err)
 			return false
@@ -292,3 +293,11 @@ func copyBody(wr io.Writer, body io.Reader) {
 		}
 	}
 }
+
+func RandRange(low, hi float64) float64 {
+	if low >= hi {
+		panic("RandRange: low boundary is greater or equal to high boundary")
+	}
+	delta := hi - low
+	return low + rand.New(RandomSource).Float64()*delta
+}