feat(protonvpn): update servers data including paid data

- `UPDATER_PROTONVPN_USERNAME` ->  `UPDATER_PROTONVPN_EMAIL`
- `-proton-username` -> `-proton-email`
- fix authentication flow to use email or username when appropriate
- fix #2985

.github/workflows/ci.yml

@@ -59,7 +59,7 @@ jobs:
       - name: Run tests in test container
         run: |
           touch coverage.txt
-          docker run --rm \
+          docker run --rm --device /dev/net/tun \
           -v "$(pwd)/coverage.txt:/tmp/gobuild/coverage.txt" \
           test-container
 

.github/workflows/markdown.yml

@@ -20,7 +20,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: DavidAnson/markdownlint-cli2-action@v16
+      - uses: DavidAnson/markdownlint-cli2-action@v18
         with:
           globs: "**.md"
           config: .markdownlint.json

.golangci.yml

@@ -20,6 +20,9 @@ issues:
       text: "newCipherDESCBCBlock returns interface \\(github\\.com\\/youmark\\/pkcs8\\.Cipher\\)"
       linters:
         - ireturn
+    - source: "^\\/\\/ https\\:\\/\\/.+$"
+      linters:
+        - lll
 
 linters:
   enable:

Dockerfile

@@ -125,6 +125,8 @@ ENV VPN_SERVICE_PROVIDER=pia \
     VPN_PORT_FORWARDING_STATUS_FILE="/tmp/gluetun/forwarded_port" \
     VPN_PORT_FORWARDING_USERNAME= \
     VPN_PORT_FORWARDING_PASSWORD= \
+    VPN_PORT_FORWARDING_UP_COMMAND= \
+    VPN_PORT_FORWARDING_DOWN_COMMAND= \
     # # Cyberghost only:
     OPENVPN_CERT= \
     OPENVPN_KEY= \
@@ -202,6 +204,8 @@ ENV VPN_SERVICE_PROVIDER=pia \
     UPDATER_PERIOD=0 \
     UPDATER_MIN_RATIO=0.8 \
     UPDATER_VPN_SERVICE_PROVIDERS= \
+    UPDATER_PROTONVPN_EMAIL= \
+    UPDATER_PROTONVPN_PASSWORD= \
     # Public IP
     PUBLICIP_FILE="/tmp/gluetun/ip" \
     PUBLICIP_ENABLED=on \

cmd/gluetun/main.go

@@ -380,7 +380,7 @@ func _main(ctx context.Context, buildInfo models.BuildInformation,
 
 	portForwardLogger := logger.New(log.SetComponent("port forwarding"))
 	portForwardLooper := portforward.NewLoop(allSettings.VPN.Provider.PortForwarding,
-		routingConf, httpClient, firewallConf, portForwardLogger, puid, pgid)
+		routingConf, httpClient, firewallConf, portForwardLogger, cmder, puid, pgid)
 	portForwardRunError, err := portForwardLooper.Start(ctx)
 	if err != nil {
 		return fmt.Errorf("starting port forwarding loop: %w", err)
@@ -420,7 +420,8 @@ func _main(ctx context.Context, buildInfo models.BuildInformation,
 	parallelResolver := resolver.NewParallelResolver(allSettings.Updater.DNSAddress)
 	openvpnFileExtractor := extract.New()
 	providers := provider.NewProviders(storage, time.Now, updaterLogger,
-		httpClient, unzipper, parallelResolver, publicIPLooper.Fetcher(), openvpnFileExtractor)
+		httpClient, unzipper, parallelResolver, publicIPLooper.Fetcher(),
+		openvpnFileExtractor, allSettings.Updater)
 
 	vpnLogger := logger.New(log.SetComponent("vpn"))
 	vpnLooper := vpn.NewLoop(allSettings.VPN, ipv6Supported, allSettings.Firewall.VPNInputPorts,

go.mod

@@ -3,35 +3,40 @@ module github.com/qdm12/gluetun
 go 1.23
 
 require (
-	github.com/breml/rootcerts v0.2.18
+	github.com/ProtonMail/go-srp v0.0.7
+	github.com/breml/rootcerts v0.2.19
 	github.com/fatih/color v1.18.0
 	github.com/golang/mock v1.6.0
 	github.com/klauspost/compress v1.17.11
 	github.com/klauspost/pgzip v1.2.6
 	github.com/pelletier/go-toml/v2 v2.2.3
 	github.com/qdm12/dns/v2 v2.0.0-rc8
-	github.com/qdm12/gosettings v0.4.3
+	github.com/qdm12/gosettings v0.4.4
 	github.com/qdm12/goshutdown v0.3.0
 	github.com/qdm12/gosplash v0.2.0
 	github.com/qdm12/gotree v0.3.0
 	github.com/qdm12/log v0.1.0
 	github.com/qdm12/ss-server v0.6.0
-	github.com/stretchr/testify v1.9.0
+	github.com/stretchr/testify v1.10.0
 	github.com/ulikunitz/xz v0.5.11
 	github.com/vishvananda/netlink v1.2.1
 	github.com/youmark/pkcs8 v0.0.0-20201027041543-1326539a0a0a
 	golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c
-	golang.org/x/net v0.30.0
+	golang.org/x/net v0.31.0
-	golang.org/x/sys v0.27.0
+	golang.org/x/sys v0.30.0
-	golang.org/x/text v0.19.0
+	golang.org/x/text v0.22.0
 	golang.zx2c4.com/wireguard v0.0.0-20231211153847-12269c276173
 	golang.zx2c4.com/wireguard/wgctrl v0.0.0-20230429144221-925a1e7659e6
 	gopkg.in/ini.v1 v1.67.0
 )
 
 require (
+	github.com/ProtonMail/bcrypt v0.0.0-20211005172633-e235017c1baf // indirect
+	github.com/ProtonMail/go-crypto v1.3.0-proton // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/cloudflare/circl v1.6.0 // indirect
+	github.com/cronokirby/saferith v0.33.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/google/go-cmp v0.6.0 // indirect
 	github.com/josharian/native v1.1.0 // indirect
@@ -42,6 +47,7 @@ require (
 	github.com/mdlayher/socket v0.4.1 // indirect
 	github.com/miekg/dns v1.1.62 // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_golang v1.20.5 // indirect
 	github.com/prometheus/client_model v0.6.1 // indirect
@@ -50,9 +56,9 @@ require (
 	github.com/qdm12/goservices v0.1.0 // indirect
 	github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3 // indirect
 	github.com/vishvananda/netns v0.0.4 // indirect
-	golang.org/x/crypto v0.28.0 // indirect
+	golang.org/x/crypto v0.33.0 // indirect
 	golang.org/x/mod v0.21.0 // indirect
-	golang.org/x/sync v0.8.0 // indirect
+	golang.org/x/sync v0.11.0 // indirect
 	golang.org/x/tools v0.26.0 // indirect
 	golang.zx2c4.com/wintun v0.0.0-20230126152724-0fa3db229ce2 // indirect
 	google.golang.org/protobuf v1.35.1 // indirect

go.sum

@@ -1,9 +1,23 @@
+github.com/ProtonMail/bcrypt v0.0.0-20210511135022-227b4adcab57/go.mod h1:HecWFHognK8GfRDGnFQbW/LiV7A3MX3gZVs45vk5h8I=
+github.com/ProtonMail/bcrypt v0.0.0-20211005172633-e235017c1baf h1:yc9daCCYUefEs69zUkSzubzjBbL+cmOXgnmt9Fyd9ug=
+github.com/ProtonMail/bcrypt v0.0.0-20211005172633-e235017c1baf/go.mod h1:o0ESU9p83twszAU8LBeJKFAAMX14tISa0yk4Oo5TOqo=
+github.com/ProtonMail/go-crypto v0.0.0-20230321155629-9a39f2531310/go.mod h1:8TI4H3IbrackdNgv+92dI+rhpCaLqM0IfpgCgenFvRE=
+github.com/ProtonMail/go-crypto v1.3.0-proton h1:tAQKQRZX/73VmzK6yHSCaRUOvS/3OYSQzhXQsrR7yUM=
+github.com/ProtonMail/go-crypto v1.3.0-proton/go.mod h1:9whxjD8Rbs29b4XWbB8irEcE8KHMqaR2e7GWU1R+/PE=
+github.com/ProtonMail/go-srp v0.0.7 h1:Sos3Qk+th4tQR64vsxGIxYpN3rdnG9Wf9K4ZloC1JrI=
+github.com/ProtonMail/go-srp v0.0.7/go.mod h1:giCp+7qRnMIcCvI6V6U3S1lDDXDQYx2ewJ6F/9wdlJk=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/breml/rootcerts v0.2.18 h1:KjZaNT7AX/akUjzpStuwTMQs42YHlPyc6NmdwShVba0=
+github.com/breml/rootcerts v0.2.19 h1:3D/qwAC1xoh82GmZ21mYzQ1NaLOICUVntIo+MRZYr4U=
-github.com/breml/rootcerts v0.2.18/go.mod h1:S/PKh+4d1HUn4HQovEB8hPJZO6pUZYrIhmXBhsegfXw=
+github.com/breml/rootcerts v0.2.19/go.mod h1:S/PKh+4d1HUn4HQovEB8hPJZO6pUZYrIhmXBhsegfXw=
+github.com/bwesterb/go-ristretto v1.2.0/go.mod h1:fUIoIZaG73pV5biE2Blr2xEzDoMj7NFEuV9ekS419A0=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cloudflare/circl v1.1.0/go.mod h1:prBCrKB9DV4poKZY1l9zBXg2QJY7mvgRvtMxxK7fi4I=
+github.com/cloudflare/circl v1.6.0 h1:cr5JKic4HI+LkINy2lg3W2jF8sHCVTBncJr5gIIq7qk=
+github.com/cloudflare/circl v1.6.0/go.mod h1:uddAzsPgqdMAYatqJ0lsjX1oECcQLIlRpzZh3pJrofs=
+github.com/cronokirby/saferith v0.33.0 h1:TgoQlfsD4LIwx71+ChfRcIpjkw+RPOapDEVxa+LhwLo=
+github.com/cronokirby/saferith v0.33.0/go.mod h1:QKJhjoqUtBsXCAVEjw38mFqoi7DebT7kthcD7UzbnoA=
 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/fatih/color v1.18.0 h1:S8gINlzdQ840/4pfAwic/ZE0djQEH3wM94VfqLTZcOM=
@@ -43,6 +57,8 @@ github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
 github.com/pelletier/go-toml/v2 v2.2.3 h1:YmeHyLY8mFWbdkNWwpr+qIL2bEqT0o95WSdkNHvL12M=
 github.com/pelletier/go-toml/v2 v2.2.3/go.mod h1:MfCQTFTvCcUyyvvwm1+G6H/jORL20Xlb6rzQu9GuUkc=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 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/prometheus/client_golang v1.20.5 h1:cxppBPuYhUnsO6yo/aoRol4L7q7UFfdm+bR9r+8l63Y=
@@ -57,8 +73,8 @@ github.com/qdm12/dns/v2 v2.0.0-rc8 h1:kbgKPkbT+79nScfuZ0ZcVhksTGo8IUqQ8TTQGnQlZ1
 github.com/qdm12/dns/v2 v2.0.0-rc8/go.mod h1:VaF02KWEL7xNV4oKfG4N9nEv/kR6bqyIcBReCV5NJhw=
 github.com/qdm12/goservices v0.1.0 h1:9sODefm/yuIGS7ynCkEnNlMTAYn9GzPhtcK4F69JWvc=
 github.com/qdm12/goservices v0.1.0/go.mod h1:/JOFsAnHFiSjyoXxa5FlfX903h20K5u/3rLzCjYVMck=
-github.com/qdm12/gosettings v0.4.3 h1:oGAjiKVtml9oHVlPQo6H3yk6TmtWpVYicNeGFcM7AP8=
+github.com/qdm12/gosettings v0.4.4 h1:SM6tOZDf6k8qbjWU8KWyBF4mWIixfsKCfh9DGRLHlj4=
-github.com/qdm12/gosettings v0.4.3/go.mod h1:CPrt2YC4UsURTrslmhxocVhMCW03lIrqdH2hzIf5prg=
+github.com/qdm12/gosettings v0.4.4/go.mod h1:CPrt2YC4UsURTrslmhxocVhMCW03lIrqdH2hzIf5prg=
 github.com/qdm12/goshutdown v0.3.0 h1:pqBpJkdwlZlfTEx4QHtS8u8CXx6pG0fVo6S1N0MpSEM=
 github.com/qdm12/goshutdown v0.3.0/go.mod h1:EqZ46No00kCTZ5qzdd3qIzY6ayhMt24QI8Mh8LVQYmM=
 github.com/qdm12/gosplash v0.2.0 h1:DOxCEizbW6ZG+FgpH2oK1atT6bM8MHL9GZ2ywSS4zZY=
@@ -73,8 +89,8 @@ github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3 h1:f/FNXud6gA3MNr
 github.com/riobard/go-bloom v0.0.0-20200614022211-cdc8013cb5b3/go.mod h1:HgjTstvQsPGkxUsCd2KWxErBblirPizecHcpD3ffK+s=
 github.com/rogpeppe/go-internal v1.13.1 h1:KvO1DLK/DRN07sQ1LQKScxyZJuNnedQ5/wKSR38lUII=
 github.com/rogpeppe/go-internal v1.13.1/go.mod h1:uMEvuHeurkdAXX61udpOXGD/AzZDWNMNyH2VO9fmH0o=
-github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
-github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/ulikunitz/xz v0.5.11 h1:kpFauv27b6ynzBNT/Xy+1k+fK4WswhN/6PN5WhFAGw8=
 github.com/ulikunitz/xz v0.5.11/go.mod h1:nbz6k7qbPmH4IRqmfOplQw/tblSgqTqBwxkY0oWt/14=
 github.com/vishvananda/netlink v1.2.1 h1:pfLv/qlJUwOTPvtWREA7c3PI4u81YkqZw1DYhI2HmLA=
@@ -84,46 +100,70 @@ github.com/vishvananda/netns v0.0.4/go.mod h1:SpkAiCQRtJ6TvvxPnOSyH3BMl6unz3xZla
 github.com/youmark/pkcs8 v0.0.0-20201027041543-1326539a0a0a h1:fZHgsYlfvtyqToslyjUt3VOPF4J7aK/3MPcK7xp3PDk=
 github.com/youmark/pkcs8 v0.0.0-20201027041543-1326539a0a0a/go.mod h1:ul22v+Nro/R083muKhosV54bj5niojjWZvU8xrevuH4=
 github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 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=
 golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/crypto v0.28.0 h1:GBDwsMXVQi34v5CCYUm2jkJvu4cbtru2U4TN2PSyQnw=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.28.0/go.mod h1:rmgy+3RHxRZMyY0jjAJShp2zgEdOqj2AO7U0pYmeQ7U=
+golang.org/x/crypto v0.7.0/go.mod h1:pYwdfH91IfpZVANVyUOhSIPZaFoJGxTFbZhFTx+dXZU=
+golang.org/x/crypto v0.33.0 h1:IOBPskki6Lysi0lo9qQvbxiQ+FvsCC/YWOecCHAixus=
+golang.org/x/crypto v0.33.0/go.mod h1:bVdXmD7IV/4GdElGPozy6U7lWdRXA4qyRVGJV57uQ5M=
 golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c h1:7dEasQXItcW1xKJ2+gg5VOiBnqWrJc+rq0DPKyvvdbY=
 golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c/go.mod h1:NQtJDoLvd6faHhE7m4T/1IY708gDefGGjR/iUW8yQQ8=
 golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/mod v0.21.0 h1:vvrHzRwRfVKSiLrG+d4FMl/Qi4ukBCE6kZlTUkDYRT0=
 golang.org/x/mod v0.21.0/go.mod h1:6SkKJ3Xj0I0BrPOZoBy3bdMptDDU9oJrpohJ3eWZ1fY=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
-golang.org/x/net v0.30.0 h1:AcW1SDZMkb8IpzCdQUaIq2sP4sZ4zw+55h6ynffypl4=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
-golang.org/x/net v0.30.0/go.mod h1:2wGyMJ5iFasEhkwi13ChkO/t1ECNC4X4eBKkVFyYFlU=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/net v0.8.0/go.mod h1:QVkue5JL9kW//ek3r6jTKnTFis1tRmNAW2P1shuFdJc=
+golang.org/x/net v0.31.0 h1:68CPQngjLL0r2AlUKiSxtQFKvzRVbnzLwMUn5SzcLHo=
+golang.org/x/net v0.31.0/go.mod h1:P4fl1q7dY2hnZFxEk4pPSkDHF+QqjitcnDjUQyMM+pM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.11.0 h1:GGz8+XQP4FvTTrjZPzNKTMFtSXH80RAzG+5ghFPgK9w=
+golang.org/x/sync v0.11.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20211007075335-d3039528d8ac/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.10.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.27.0 h1:wBqf8DvsY9Y/2P8gAfPDEYNuS30J4lPHJxXSb/nJZ+s=
+golang.org/x/sys v0.30.0 h1:QjkSwP/36a20jFYWkSue1YwXzLmsV5Gfq7Eiy72C1uc=
-golang.org/x/sys v0.27.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.30.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/term v0.6.0/go.mod h1:m6U89DPEgQRMq3DNkDClhWw02AUbt2daBVO4cn4Hv9U=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.19.0 h1:kTxAhCbGbxhK0IwgSKiMO5awPoDQ0RpfiVYBfK860YM=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/text v0.19.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.8.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
+golang.org/x/text v0.22.0 h1:bofq7m3/HAFvbF51jz3Q9wLg3jkvSPuiZu/pD1XwgtM=
+golang.org/x/text v0.22.0/go.mod h1:YRoo4H8PVmsu+E3Ou7cqLVH8oXWIHVoX0jqUWALQhfY=
 golang.org/x/time v0.0.0-20220210224613-90d013bbcef8 h1:vVKdlvoWBphwdxWKrFZEuM0kGgGLxUOYcY4U/2Vjg44=
 golang.org/x/time v0.0.0-20220210224613-90d013bbcef8/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
 golang.org/x/tools v0.26.0 h1:v/60pFQmzmT9ExmjDv2gGIfi3OqfKoEP6I5+umXlbnQ=
 golang.org/x/tools v0.26.0/go.mod h1:TPVVj70c7JJ3WCazhD8OdXcZg/og+b9+tH/KxylGwH0=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=

internal/cli/nooplogger.go

@@ -7,3 +7,4 @@ func newNoopLogger() *noopLogger {
 }
 
 func (l *noopLogger) Info(string) {}
+func (l *noopLogger) Warn(string) {}

internal/cli/openvpnconfig.go

@@ -56,6 +56,7 @@ func (c *CLI) OpenvpnConfig(logger OpenvpnConfigLogger, reader *reader.Reader,
 	if err != nil {
 		return err
 	}
+	allSettings.SetDefaults()
 
 	ipv6Supported, err := ipv6Checker.IsIPv6Supported()
 	if err != nil {
@@ -75,7 +76,7 @@ func (c *CLI) OpenvpnConfig(logger OpenvpnConfigLogger, reader *reader.Reader,
 	openvpnFileExtractor := extract.New()
 
 	providers := provider.NewProviders(storage, time.Now, warner, client,
-		unzipper, parallelResolver, ipFetcher, openvpnFileExtractor)
+		unzipper, parallelResolver, ipFetcher, openvpnFileExtractor, allSettings.Updater)
 	providerConf := providers.Get(allSettings.VPN.Provider.Name)
 	connection, err := providerConf.GetConnection(
 		allSettings.VPN.Provider.ServerSelection, ipv6Supported)

internal/cli/update.go

@@ -6,6 +6,7 @@ import (
 	"flag"
 	"fmt"
 	"net/http"
+	"slices"
 	"strings"
 	"time"
 
@@ -24,6 +25,8 @@ import (
 var (
 	ErrModeUnspecified     = errors.New("at least one of -enduser or -maintainer must be specified")
 	ErrNoProviderSpecified = errors.New("no provider was specified")
+	ErrUsernameMissing     = errors.New("username is required for this provider")
+	ErrPasswordMissing     = errors.New("password is required for this provider")
 )
 
 type UpdaterLogger interface {
@@ -35,7 +38,7 @@ type UpdaterLogger interface {
 func (c *CLI) Update(ctx context.Context, args []string, logger UpdaterLogger) error {
 	options := settings.Updater{}
 	var endUserMode, maintainerMode, updateAll bool
-	var csvProviders, ipToken string
+	var csvProviders, ipToken, protonUsername, protonEmail, protonPassword string
 	flagSet := flag.NewFlagSet("update", flag.ExitOnError)
 	flagSet.BoolVar(&endUserMode, "enduser", false, "Write results to /gluetun/servers.json (for end users)")
 	flagSet.BoolVar(&maintainerMode, "maintainer", false,
@@ -47,6 +50,10 @@ func (c *CLI) Update(ctx context.Context, args []string, logger UpdaterLogger) e
 	flagSet.BoolVar(&updateAll, "all", false, "Update servers for all VPN providers")
 	flagSet.StringVar(&csvProviders, "providers", "", "CSV string of VPN providers to update server data for")
 	flagSet.StringVar(&ipToken, "ip-token", "", "IP data service token (e.g. ipinfo.io) to use")
+	flagSet.StringVar(&protonUsername, "proton-username", "",
+		"(Retro-compatibility) Username to use to authenticate with Proton. Use -proton-email instead.") // v4 remove this
+	flagSet.StringVar(&protonEmail, "proton-email", "", "Email to use to authenticate with Proton")
+	flagSet.StringVar(&protonPassword, "proton-password", "", "Password to use to authenticate with Proton")
 	if err := flagSet.Parse(args); err != nil {
 		return err
 	}
@@ -64,6 +71,16 @@ func (c *CLI) Update(ctx context.Context, args []string, logger UpdaterLogger) e
 		options.Providers = strings.Split(csvProviders, ",")
 	}
 
+	if slices.Contains(options.Providers, providers.Protonvpn) {
+		if protonEmail == "" && protonUsername != "" {
+			protonEmail = protonUsername + "@protonmail.com"
+			logger.Warn("use -proton-email instead of -proton-username in the future. " +
+				"This assumes the email is " + protonEmail + " and may not work.")
+		}
+		options.ProtonEmail = &protonEmail
+		options.ProtonPassword = &protonPassword
+	}
+
 	options.SetDefaults(options.Providers[0])
 
 	err := options.Validate()
@@ -94,7 +111,7 @@ func (c *CLI) Update(ctx context.Context, args []string, logger UpdaterLogger) e
 	openvpnFileExtractor := extract.New()
 
 	providers := provider.NewProviders(storage, time.Now, logger, httpClient,
-		unzipper, parallelResolver, ipFetcher, openvpnFileExtractor)
+		unzipper, parallelResolver, ipFetcher, openvpnFileExtractor, options)
 
 	updater := updater.New(httpClient, storage, providers, logger)
 	err = updater.UpdateServers(ctx, options.Providers, options.MinRatio)

internal/command/split.go

@@ -0,0 +1,150 @@
+package command
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"strings"
+	"unicode/utf8"
+)
+
+var (
+	ErrCommandEmpty            = errors.New("command is empty")
+	ErrSingleQuoteUnterminated = errors.New("unterminated single-quoted string")
+	ErrDoubleQuoteUnterminated = errors.New("unterminated double-quoted string")
+	ErrEscapeUnterminated      = errors.New("unterminated backslash-escape")
+)
+
+// Split splits a command string into a slice of arguments.
+// This is especially important for commands such as:
+// /bin/sh -c "echo hello"
+// which should be split into: ["/bin/sh", "-c", "echo hello"]
+// It supports backslash-escapes, single-quotes and double-quotes.
+// It does not support:
+// - the $" quoting style.
+// - expansion (brace, shell or pathname).
+func Split(command string) (words []string, err error) {
+	if command == "" {
+		return nil, fmt.Errorf("%w", ErrCommandEmpty)
+	}
+
+	const bufferSize = 1024
+	buffer := bytes.NewBuffer(make([]byte, bufferSize))
+
+	startIndex := 0
+
+	for startIndex < len(command) {
+		// skip any split characters at the start
+		character, runeSize := utf8.DecodeRuneInString(command[startIndex:])
+		switch {
+		case strings.ContainsRune(" \n\t", character):
+			startIndex += runeSize
+		case character == '\\':
+			// Look ahead to eventually skip an escaped newline
+			if command[startIndex+runeSize:] == "" {
+				return nil, fmt.Errorf("%w: %q", ErrEscapeUnterminated, command)
+			}
+			character, runeSize := utf8.DecodeRuneInString(command[startIndex+runeSize:])
+			if character == '\n' {
+				startIndex += runeSize + runeSize // backslash and newline
+			}
+		default:
+			var word string
+			buffer.Reset()
+			word, startIndex, err = splitWord(command, startIndex, buffer)
+			if err != nil {
+				return nil, fmt.Errorf("splitting word in %q: %w", command, err)
+			}
+			words = append(words, word)
+		}
+	}
+	return words, nil
+}
+
+// WARNING: buffer must be cleared before calling this function.
+func splitWord(input string, startIndex int, buffer *bytes.Buffer) (
+	word string, newStartIndex int, err error,
+) {
+	cursor := startIndex
+	for cursor < len(input) {
+		character, runeLength := utf8.DecodeRuneInString(input[cursor:])
+		cursor += runeLength
+		if character == '"' ||
+			character == '\'' ||
+			character == '\\' ||
+			character == ' ' ||
+			character == '\n' ||
+			character == '\t' {
+			buffer.WriteString(input[startIndex : cursor-runeLength])
+		}
+
+		switch {
+		case strings.ContainsRune(" \n\t", character): // spacing character
+			return buffer.String(), cursor, nil
+		case character == '"':
+			return handleDoubleQuoted(input, cursor, buffer)
+		case character == '\'':
+			return handleSingleQuoted(input, cursor, buffer)
+		case character == '\\':
+			return handleEscaped(input, cursor, buffer)
+		}
+	}
+
+	buffer.WriteString(input[startIndex:])
+	return buffer.String(), len(input), nil
+}
+
+func handleDoubleQuoted(input string, startIndex int, buffer *bytes.Buffer) (
+	word string, newStartIndex int, err error,
+) {
+	cursor := startIndex
+	for cursor < len(input) {
+		nextCharacter, nextRuneLength := utf8.DecodeRuneInString(input[cursor:])
+		cursor += nextRuneLength
+		switch nextCharacter {
+		case '"': // end of the double quoted string
+			buffer.WriteString(input[startIndex : cursor-nextRuneLength])
+			return splitWord(input, cursor, buffer)
+		case '\\': // escaped character
+			escapedCharacter, escapedRuneLength := utf8.DecodeRuneInString(input[cursor:])
+			cursor += escapedRuneLength
+			if !strings.ContainsRune("$`\"\n\\", escapedCharacter) {
+				break
+			}
+			buffer.WriteString(input[startIndex : cursor-nextRuneLength-escapedRuneLength])
+			if escapedCharacter != '\n' {
+				// skip backslash entirely for the newline character
+				buffer.WriteRune(escapedCharacter)
+			}
+			startIndex = cursor
+		}
+	}
+	return "", 0, fmt.Errorf("%w", ErrDoubleQuoteUnterminated)
+}
+
+func handleSingleQuoted(input string, startIndex int, buffer *bytes.Buffer) (
+	word string, newStartIndex int, err error,
+) {
+	closingQuoteIndex := strings.IndexRune(input[startIndex:], '\'')
+	if closingQuoteIndex == -1 {
+		return "", 0, fmt.Errorf("%w", ErrSingleQuoteUnterminated)
+	}
+	buffer.WriteString(input[startIndex : startIndex+closingQuoteIndex])
+	const singleQuoteRuneLength = 1
+	startIndex += closingQuoteIndex + singleQuoteRuneLength
+	return splitWord(input, startIndex, buffer)
+}
+
+func handleEscaped(input string, startIndex int, buffer *bytes.Buffer) (
+	word string, newStartIndex int, err error,
+) {
+	if input[startIndex:] == "" {
+		return "", 0, fmt.Errorf("%w", ErrEscapeUnterminated)
+	}
+	character, runeLength := utf8.DecodeRuneInString(input[startIndex:])
+	if character != '\n' { // backslash-escaped newline is ignored
+		buffer.WriteString(input[startIndex : startIndex+runeLength])
+	}
+	startIndex += runeLength
+	return splitWord(input, startIndex, buffer)
+}

internal/command/split_test.go

@@ -0,0 +1,110 @@
+package command
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func Test_Split(t *testing.T) {
+	t.Parallel()
+
+	testCases := map[string]struct {
+		command    string
+		words      []string
+		errWrapped error
+		errMessage string
+	}{
+		"empty": {
+			command:    "",
+			errWrapped: ErrCommandEmpty,
+			errMessage: "command is empty",
+		},
+		"concrete_sh_command": {
+			command: `/bin/sh -c "echo 123"`,
+			words:   []string{"/bin/sh", "-c", "echo 123"},
+		},
+		"single_word": {
+			command: "word1",
+			words:   []string{"word1"},
+		},
+		"two_words_single_space": {
+			command: "word1 word2",
+			words:   []string{"word1", "word2"},
+		},
+		"two_words_multiple_space": {
+			command: "word1    word2",
+			words:   []string{"word1", "word2"},
+		},
+		"two_words_no_expansion": {
+			command: "word1*    word2?",
+			words:   []string{"word1*", "word2?"},
+		},
+		"escaped_single quote": {
+			command: "ain\\'t good",
+			words:   []string{"ain't", "good"},
+		},
+		"escaped_single_quote_all_single_quoted": {
+			command: "'ain'\\''t good'",
+			words:   []string{"ain't good"},
+		},
+		"empty_single_quoted": {
+			command: "word1 ''  word2",
+			words:   []string{"word1", "", "word2"},
+		},
+		"escaped_newline": {
+			command: "word1\\\nword2",
+			words:   []string{"word1word2"},
+		},
+		"quoted_newline": {
+			command: "text \"with\na\" quoted newline",
+			words:   []string{"text", "with\na", "quoted", "newline"},
+		},
+		"quoted_escaped_newline": {
+			command: "\"word1\\d\\\\\\\" word2\\\nword3 word4\"",
+			words:   []string{"word1\\d\\\" word2word3 word4"},
+		},
+		"escaped_separated_newline": {
+			command: "word1 \\\n word2",
+			words:   []string{"word1", "word2"},
+		},
+		"double_quotes_no_spacing": {
+			command: "word1\"word2\"word3",
+			words:   []string{"word1word2word3"},
+		},
+		"unterminated_single_quote": {
+			command:    "'abc'\\''def",
+			errWrapped: ErrSingleQuoteUnterminated,
+			errMessage: `splitting word in "'abc'\\''def": unterminated single-quoted string`,
+		},
+		"unterminated_double_quote": {
+			command:    "\"abc'def",
+			errWrapped: ErrDoubleQuoteUnterminated,
+			errMessage: `splitting word in "\"abc'def": unterminated double-quoted string`,
+		},
+		"unterminated_escape": {
+			command:    "abc\\",
+			errWrapped: ErrEscapeUnterminated,
+			errMessage: `splitting word in "abc\\": unterminated backslash-escape`,
+		},
+		"unterminated_escape_only": {
+			command:    "   \\",
+			errWrapped: ErrEscapeUnterminated,
+			errMessage: `unterminated backslash-escape: "   \\"`,
+		},
+	}
+
+	for name, testCase := range testCases {
+		t.Run(name, func(t *testing.T) {
+			t.Parallel()
+
+			words, err := Split(testCase.command)
+
+			assert.Equal(t, testCase.words, words)
+			assert.ErrorIs(t, err, testCase.errWrapped)
+			if testCase.errWrapped != nil {
+				assert.EqualError(t, err, testCase.errMessage)
+			}
+		})
+	}
+}

internal/configuration/settings/errors.go

@@ -36,6 +36,8 @@ var (
 	ErrSystemPUIDNotValid              = errors.New("process user id is not valid")
 	ErrSystemTimezoneNotValid          = errors.New("timezone is not valid")
 	ErrUpdaterPeriodTooSmall           = errors.New("VPN server data updater period is too small")
+	ErrUpdaterProtonPasswordMissing    = errors.New("proton password is missing")
+	ErrUpdaterProtonEmailMissing       = errors.New("proton email is missing")
 	ErrVPNProviderNameNotValid         = errors.New("VPN provider name is not valid")
 	ErrVPNTypeNotValid                 = errors.New("VPN type is not valid")
 	ErrWireguardAllowedIPNotSet        = errors.New("allowed IP is not set")

internal/configuration/settings/portforward.go

@@ -29,6 +29,14 @@ type PortForwarding struct {
 	// to write to a file. It cannot be nil for the
 	// internal state
 	Filepath *string `json:"status_file_path"`
+	// UpCommand is the command to use when the port forwarding is up.
+	// It can be the empty string to indicate not to run a command.
+	// It cannot be nil in the internal state.
+	UpCommand *string `json:"up_command"`
+	// DownCommand is the command to use after the port forwarding goes down.
+	// It can be the empty string to indicate to NOT run a command.
+	// It cannot be nil in the internal state.
+	DownCommand *string `json:"down_command"`
 	// ListeningPort is the port traffic would be redirected to from the
 	// forwarded port. The redirection is disabled if it is set to 0, which
 	// is its default as well.
@@ -84,6 +92,8 @@ func (p *PortForwarding) Copy() (copied PortForwarding) {
 		Enabled:       gosettings.CopyPointer(p.Enabled),
 		Provider:      gosettings.CopyPointer(p.Provider),
 		Filepath:      gosettings.CopyPointer(p.Filepath),
+		UpCommand:     gosettings.CopyPointer(p.UpCommand),
+		DownCommand:   gosettings.CopyPointer(p.DownCommand),
 		ListeningPort: gosettings.CopyPointer(p.ListeningPort),
 		Username:      p.Username,
 		Password:      p.Password,
@@ -94,6 +104,8 @@ func (p *PortForwarding) OverrideWith(other PortForwarding) {
 	p.Enabled = gosettings.OverrideWithPointer(p.Enabled, other.Enabled)
 	p.Provider = gosettings.OverrideWithPointer(p.Provider, other.Provider)
 	p.Filepath = gosettings.OverrideWithPointer(p.Filepath, other.Filepath)
+	p.UpCommand = gosettings.OverrideWithPointer(p.UpCommand, other.UpCommand)
+	p.DownCommand = gosettings.OverrideWithPointer(p.DownCommand, other.DownCommand)
 	p.ListeningPort = gosettings.OverrideWithPointer(p.ListeningPort, other.ListeningPort)
 	p.Username = gosettings.OverrideWithComparable(p.Username, other.Username)
 	p.Password = gosettings.OverrideWithComparable(p.Password, other.Password)
@@ -103,6 +115,8 @@ func (p *PortForwarding) setDefaults() {
 	p.Enabled = gosettings.DefaultPointer(p.Enabled, false)
 	p.Provider = gosettings.DefaultPointer(p.Provider, "")
 	p.Filepath = gosettings.DefaultPointer(p.Filepath, "/tmp/gluetun/forwarded_port")
+	p.UpCommand = gosettings.DefaultPointer(p.UpCommand, "")
+	p.DownCommand = gosettings.DefaultPointer(p.DownCommand, "")
 	p.ListeningPort = gosettings.DefaultPointer(p.ListeningPort, 0)
 }
 
@@ -135,6 +149,13 @@ func (p PortForwarding) toLinesNode() (node *gotree.Node) {
 	}
 	node.Appendf("Forwarded port file path: %s", filepath)
 
+	if *p.UpCommand != "" {
+		node.Appendf("Forwarded port up command: %s", *p.UpCommand)
+	}
+	if *p.DownCommand != "" {
+		node.Appendf("Forwarded port down command: %s", *p.DownCommand)
+	}
+
 	if p.Username != "" {
 		credentialsNode := node.Appendf("Credentials:")
 		credentialsNode.Appendf("Username: %s", p.Username)
@@ -163,6 +184,12 @@ func (p *PortForwarding) read(r *reader.Reader) (err error) {
 			"PRIVATE_INTERNET_ACCESS_VPN_PORT_FORWARDING_STATUS_FILE",
 		))
 
+	p.UpCommand = r.Get("VPN_PORT_FORWARDING_UP_COMMAND",
+		reader.ForceLowercase(false))
+
+	p.DownCommand = r.Get("VPN_PORT_FORWARDING_DOWN_COMMAND",
+		reader.ForceLowercase(false))
+
 	p.ListeningPort, err = r.Uint16Ptr("VPN_PORT_FORWARDING_LISTENING_PORT")
 	if err != nil {
 		return err

internal/configuration/settings/updater.go

@@ -2,6 +2,7 @@ package settings
 
 import (
 	"fmt"
+	"slices"
 	"strings"
 	"time"
 
@@ -31,6 +32,10 @@ type Updater struct {
 	// Providers is the list of VPN service providers
 	// to update server information for.
 	Providers []string
+	// ProtonEmail is the email to authenticate with the Proton API.
+	ProtonEmail *string
+	// ProtonPassword is the password to authenticate with the Proton API.
+	ProtonPassword *string
 }
 
 func (u Updater) Validate() (err error) {
@@ -51,6 +56,18 @@ func (u Updater) Validate() (err error) {
 		if err != nil {
 			return fmt.Errorf("%w: %w", ErrVPNProviderNameNotValid, err)
 		}
+
+		if provider == providers.Protonvpn {
+			authenticatedAPI := *u.ProtonEmail != "" || *u.ProtonPassword != ""
+			if authenticatedAPI {
+				switch {
+				case *u.ProtonEmail == "":
+					return fmt.Errorf("%w", ErrUpdaterProtonEmailMissing)
+				case *u.ProtonPassword == "":
+					return fmt.Errorf("%w", ErrUpdaterProtonPasswordMissing)
+				}
+			}
+		}
 	}
 
 	return nil
@@ -58,10 +75,12 @@ func (u Updater) Validate() (err error) {
 
 func (u *Updater) copy() (copied Updater) {
 	return Updater{
-		Period:     gosettings.CopyPointer(u.Period),
+		Period:         gosettings.CopyPointer(u.Period),
-		DNSAddress: u.DNSAddress,
+		DNSAddress:     u.DNSAddress,
-		MinRatio:   u.MinRatio,
+		MinRatio:       u.MinRatio,
-		Providers:  gosettings.CopySlice(u.Providers),
+		Providers:      gosettings.CopySlice(u.Providers),
+		ProtonEmail:    gosettings.CopyPointer(u.ProtonEmail),
+		ProtonPassword: gosettings.CopyPointer(u.ProtonPassword),
 	}
 }
 
@@ -73,6 +92,8 @@ func (u *Updater) overrideWith(other Updater) {
 	u.DNSAddress = gosettings.OverrideWithComparable(u.DNSAddress, other.DNSAddress)
 	u.MinRatio = gosettings.OverrideWithComparable(u.MinRatio, other.MinRatio)
 	u.Providers = gosettings.OverrideWithSlice(u.Providers, other.Providers)
+	u.ProtonEmail = gosettings.OverrideWithPointer(u.ProtonEmail, other.ProtonEmail)
+	u.ProtonPassword = gosettings.OverrideWithPointer(u.ProtonPassword, other.ProtonPassword)
 }
 
 func (u *Updater) SetDefaults(vpnProvider string) {
@@ -87,6 +108,10 @@ func (u *Updater) SetDefaults(vpnProvider string) {
 	if len(u.Providers) == 0 && vpnProvider != providers.Custom {
 		u.Providers = []string{vpnProvider}
 	}
+
+	// Set these to empty strings to avoid nil pointer panics
+	u.ProtonEmail = gosettings.DefaultPointer(u.ProtonEmail, "")
+	u.ProtonPassword = gosettings.DefaultPointer(u.ProtonPassword, "")
 }
 
 func (u Updater) String() string {
@@ -103,6 +128,10 @@ func (u Updater) toLinesNode() (node *gotree.Node) {
 	node.Appendf("DNS address: %s", u.DNSAddress)
 	node.Appendf("Minimum ratio: %.1f", u.MinRatio)
 	node.Appendf("Providers to update: %s", strings.Join(u.Providers, ", "))
+	if slices.Contains(u.Providers, providers.Protonvpn) {
+		node.Appendf("Proton API email: %s", *u.ProtonEmail)
+		node.Appendf("Proton API password: %s", gosettings.ObfuscateKey(*u.ProtonPassword))
+	}
 
 	return node
 }
@@ -125,6 +154,14 @@ func (u *Updater) read(r *reader.Reader) (err error) {
 
 	u.Providers = r.CSV("UPDATER_VPN_SERVICE_PROVIDERS")
 
+	u.ProtonEmail = r.Get("UPDATER_PROTONVPN_EMAIL")
+	if u.ProtonEmail == nil {
+		protonUsername := r.String("UPDATER_PROTONVPN_USERNAME", reader.IsRetro("UPDATER_PROTONVPN_EMAIL"))
+		protonEmail := protonUsername + "@protonmail.com"
+		u.ProtonEmail = &protonEmail
+	}
+	u.ProtonPassword = r.Get("UPDATER_PROTONVPN_PASSWORD")
+
 	return nil
 }
 

internal/dns/run.go

@@ -37,7 +37,6 @@ func (l *Loop) Run(ctx context.Context, done chan<- struct{}) {
 			if err == nil {
 				l.backoffTime = defaultBackoffTime
 				l.logger.Info("ready")
-				l.signalOrSetStatus(constants.Running)
 				break
 			}
 
@@ -54,6 +53,7 @@ func (l *Loop) Run(ctx context.Context, done chan<- struct{}) {
 			l.logAndWait(ctx, err)
 			settings = l.GetSettings()
 		}
+		l.signalOrSetStatus(constants.Running)
 
 		settings = l.GetSettings()
 		if !*settings.KeepNameserver && !*settings.DoT.Enabled {
@@ -74,15 +74,19 @@ func (l *Loop) runWait(ctx context.Context, runError <-chan error) (exitLoop boo
 	for {
 		select {
 		case <-ctx.Done():
-			l.stopServer()
+			if !*l.GetSettings().KeepNameserver {
-			// TODO revert OS and Go nameserver when exiting
+				l.stopServer()
+				// TODO revert OS and Go nameserver when exiting
+			}
 			return true
 		case <-l.stop:
 			l.userTrigger = true
 			l.logger.Info("stopping")
-			const fallback = false
+			if !*l.GetSettings().KeepNameserver {
-			l.useUnencryptedDNS(fallback)
+				const fallback = false
-			l.stopServer()
+				l.useUnencryptedDNS(fallback)
+				l.stopServer()
+			}
 			l.stopped <- struct{}{}
 		case <-l.start:
 			l.userTrigger = true

internal/firewall/list.go

@@ -22,7 +22,7 @@ type chainRule struct {
 	packets         uint64
 	bytes           uint64
 	target          string       // "ACCEPT", "DROP", "REJECT" or "REDIRECT"
-	protocol        string       // "tcp", "udp" or "" for all protocols.
+	protocol        string       // "icmp", "tcp", "udp" or "" for all protocols.
 	inputInterface  string       // input interface, for example "tun0" or "*""
 	outputInterface string       // output interface, for example "eth0" or "*""
 	source          netip.Prefix // source IP CIDR, for example 0.0.0.0/0. Must be valid.
@@ -324,6 +324,8 @@ var ErrProtocolUnknown = errors.New("unknown protocol")
 func parseProtocol(s string) (protocol string, err error) {
 	switch s {
 	case "0":
+	case "1":
+		protocol = "icmp"
 	case "6":
 		protocol = "tcp"
 	case "17":

internal/firewall/list_test.go

@@ -56,7 +56,8 @@ num pkts bytes target     prot opt in     out     source               destinati
 num pkts bytes target     prot opt in     out     source               destination
 1   0     0 ACCEPT     17   --  tun0   *       0.0.0.0/0            0.0.0.0/0            udp dpt:55405
 2   0     0 ACCEPT     6    --  tun0   *       0.0.0.0/0            0.0.0.0/0            tcp dpt:55405
-3   0     0 DROP       0    --  tun0   *       1.2.3.4              0.0.0.0/0
+3   0     0 ACCEPT     1    --  tun0   *       0.0.0.0/0            0.0.0.0/0
+4   0     0 DROP       0    --  tun0   *       1.2.3.4              0.0.0.0/0
 `,
 			table: chain{
 				name:    "INPUT",
@@ -92,6 +93,17 @@ num pkts bytes target     prot opt in     out     source               destinati
 						lineNumber:      3,
 						packets:         0,
 						bytes:           0,
+						target:          "ACCEPT",
+						protocol:        "icmp",
+						inputInterface:  "tun0",
+						outputInterface: "*",
+						source:          netip.MustParsePrefix("0.0.0.0/0"),
+						destination:     netip.MustParsePrefix("0.0.0.0/0"),
+					},
+					{
+						lineNumber:      4,
+						packets:         0,
+						bytes:           0,
 						target:          "DROP",
 						protocol:        "",
 						inputInterface:  "tun0",

internal/firewall/support.go

@@ -92,7 +92,7 @@ func testIptablesPath(ctx context.Context, path string,
 	// Set policy as the existing policy so no mutation is done.
 	// This is an extra check for some buggy kernels where setting the policy
 	// does not work.
-	cmd = exec.CommandContext(ctx, path, "-L", "INPUT")
+	cmd = exec.CommandContext(ctx, path, "-nL", "INPUT")
 	output, err = runner.Run(cmd)
 	if err != nil {
 		unsupportedMessage = fmt.Sprintf("%s (%s)", output, err)

internal/firewall/support_test.go

@@ -24,7 +24,7 @@ func newDeleteTestRuleMatcher(path string) *cmdMatcher {
 
 func newListInputRulesMatcher(path string) *cmdMatcher {
 	return newCmdMatcher(path,
-		"^-L$", "^INPUT$")
+		"^-nL$", "^INPUT$")
 }
 
 func newSetPolicyMatcher(path, inputPolicy string) *cmdMatcher { //nolint:unparam

internal/natpmp/externaladdress_test.go

@@ -2,6 +2,7 @@ package natpmp
 
 import (
 	"context"
+	"net"
 	"net/netip"
 	"testing"
 	"time"
@@ -23,14 +24,15 @@ func Test_Client_ExternalAddress(t *testing.T) {
 		durationSinceStartOfEpoch time.Duration
 		externalIPv4Address       netip.Addr
 		err                       error
-		errMessage                string
+		errMessageRegex           string
 	}{
 		"failure": {
 			ctx:                 canceledCtx,
 			gateway:             netip.AddrFrom4([4]byte{127, 0, 0, 1}),
 			initialConnDuration: initialConnectionDuration,
-			err:                 context.Canceled,
+			err:                 net.ErrClosed,
-			errMessage:          "executing remote procedure call: reading from udp connection: context canceled",
+			errMessageRegex: "executing remote procedure call: setting connection deadline: " +
+				"set udp 127.0.0.1:[1-9][0-9]{1,4}: use of closed network connection",
 		},
 		"success": {
 			ctx:                 context.Background(),
@@ -60,7 +62,7 @@ func Test_Client_ExternalAddress(t *testing.T) {
 			durationSinceStartOfEpoch, externalIPv4Address, err := client.ExternalAddress(testCase.ctx, testCase.gateway)
 			assert.ErrorIs(t, err, testCase.err)
 			if testCase.err != nil {
-				assert.EqualError(t, err, testCase.errMessage)
+				assert.Regexp(t, testCase.errMessageRegex, err.Error())
 			}
 			assert.Equal(t, testCase.durationSinceStartOfEpoch, durationSinceStartOfEpoch)
 			assert.Equal(t, testCase.externalIPv4Address, externalIPv4Address)

internal/natpmp/rpc.go

@@ -45,8 +45,10 @@ func (c *Client) rpc(ctx context.Context, gateway netip.Addr,
 		cancel()
 		<-endGoroutineDone
 	}()
+	ctxListeningReady := make(chan struct{})
 	go func() {
 		defer close(endGoroutineDone)
+		close(ctxListeningReady)
 		// Context is canceled either by the parent context or
 		// when this function returns.
 		<-ctx.Done()
@@ -60,6 +62,7 @@ func (c *Client) rpc(ctx context.Context, gateway netip.Addr,
 		}
 		err = fmt.Errorf("%w; closing connection: %w", err, closeErr)
 	}()
+	<-ctxListeningReady // really to make unit testing reliable
 
 	const maxResponseSize = 16
 	response = make([]byte, maxResponseSize)

internal/netlink/types.go

@@ -32,11 +32,6 @@ type Route struct {
 	Type      int
 }
 
-func (r Route) String() string {
-	return fmt.Sprintf("{link %d, dst %s, src %s, gw %s, priority %d, family %d, table %d, type %d}",
-		r.LinkIndex, r.Dst, r.Src, r.Gw, r.Priority, r.Family, r.Table, r.Type)
-}
-
 type Rule struct {
 	Priority int
 	Family   int

internal/portforward/interfaces.go

@@ -3,6 +3,7 @@ package portforward
 import (
 	"context"
 	"net/netip"
+	"os/exec"
 )
 
 type Service interface {
@@ -29,3 +30,8 @@ type Logger interface {
 	Warn(s string)
 	Error(s string)
 }
+
+type Cmder interface {
+	Start(cmd *exec.Cmd) (stdoutLines, stderrLines <-chan string,
+		waitError <-chan error, startErr error)
+}

internal/portforward/loop.go

@@ -20,6 +20,7 @@ type Loop struct {
 	client      *http.Client
 	portAllower PortAllower
 	logger      Logger
+	cmder       Cmder
 	// Fixed parameters
 	uid, gid int
 	// Internal channels and locks
@@ -34,7 +35,7 @@ type Loop struct {
 
 func NewLoop(settings settings.PortForwarding, routing Routing,
 	client *http.Client, portAllower PortAllower,
-	logger Logger, uid, gid int,
+	logger Logger, cmder Cmder, uid, gid int,
 ) *Loop {
 	return &Loop{
 		settings: Settings{
@@ -42,6 +43,8 @@ func NewLoop(settings settings.PortForwarding, routing Routing,
 			Service: service.Settings{
 				Enabled:       settings.Enabled,
 				Filepath:      *settings.Filepath,
+				UpCommand:     *settings.UpCommand,
+				DownCommand:   *settings.DownCommand,
 				ListeningPort: *settings.ListeningPort,
 			},
 		},
@@ -49,6 +52,7 @@ func NewLoop(settings settings.PortForwarding, routing Routing,
 		client:      client,
 		portAllower: portAllower,
 		logger:      logger,
+		cmder:       cmder,
 		uid:         uid,
 		gid:         gid,
 	}
@@ -115,7 +119,7 @@ func (l *Loop) run(runCtx context.Context, runDone chan<- struct{},
 		*serviceSettings.Enabled = *serviceSettings.Enabled && *l.settings.VPNIsUp
 
 		l.service = service.New(serviceSettings, l.routing, l.client,
-			l.portAllower, l.logger, l.uid, l.gid)
+			l.portAllower, l.logger, l.cmder, l.uid, l.gid)
 
 		var err error
 		serviceRunError, err = l.service.Start(runCtx)

internal/portforward/service/command.go

@@ -0,0 +1,59 @@
+package service
+
+import (
+	"context"
+	"fmt"
+	"os/exec"
+	"strings"
+
+	"github.com/qdm12/gluetun/internal/command"
+)
+
+func runCommand(ctx context.Context, cmder Cmder, logger Logger,
+	commandTemplate string, ports []uint16,
+) (err error) {
+	portStrings := make([]string, len(ports))
+	for i, port := range ports {
+		portStrings[i] = fmt.Sprint(int(port))
+	}
+	portsString := strings.Join(portStrings, ",")
+	commandString := strings.ReplaceAll(commandTemplate, "{{PORTS}}", portsString)
+	args, err := command.Split(commandString)
+	if err != nil {
+		return fmt.Errorf("parsing command: %w", err)
+	}
+
+	cmd := exec.CommandContext(ctx, args[0], args[1:]...) // #nosec G204
+	stdout, stderr, waitError, err := cmder.Start(cmd)
+	if err != nil {
+		return err
+	}
+
+	streamCtx, streamCancel := context.WithCancel(context.Background())
+	streamDone := make(chan struct{})
+	go streamLines(streamCtx, streamDone, logger, stdout, stderr)
+
+	err = <-waitError
+	streamCancel()
+	<-streamDone
+	return err
+}
+
+func streamLines(ctx context.Context, done chan<- struct{},
+	logger Logger, stdout, stderr <-chan string,
+) {
+	defer close(done)
+
+	var line string
+
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case line = <-stdout:
+			logger.Info(line)
+		case line = <-stderr:
+			logger.Error(line)
+		}
+	}
+}

internal/portforward/service/command_test.go

@@ -0,0 +1,28 @@
+//go:build linux
+
+package service
+
+import (
+	"context"
+	"testing"
+
+	gomock "github.com/golang/mock/gomock"
+	"github.com/qdm12/gluetun/internal/command"
+	"github.com/stretchr/testify/require"
+)
+
+func Test_Service_runCommand(t *testing.T) {
+	t.Parallel()
+	ctrl := gomock.NewController(t)
+
+	ctx := context.Background()
+	cmder := command.New()
+	const commandTemplate = `/bin/sh -c "echo {{PORTS}}"`
+	ports := []uint16{1234, 5678}
+	logger := NewMockLogger(ctrl)
+	logger.EXPECT().Info("1234,5678")
+
+	err := runCommand(ctx, cmder, logger, commandTemplate, ports)
+
+	require.NoError(t, err)
+}

internal/portforward/service/interfaces.go

@@ -3,6 +3,7 @@ package service
 import (
 	"context"
 	"net/netip"
+	"os/exec"
 
 	"github.com/qdm12/gluetun/internal/provider/utils"
 )
@@ -32,3 +33,8 @@ type PortForwarder interface {
 		ports []uint16, err error)
 	KeepPortForward(ctx context.Context, objects utils.PortForwardObjects) (err error)
 }
+
+type Cmder interface {
+	Start(cmd *exec.Cmd) (stdoutLines, stderrLines <-chan string,
+		waitError <-chan error, startErr error)
+}

internal/portforward/service/mocks_generate_test.go

@@ -0,0 +1,3 @@
+package service
+
+//go:generate mockgen -destination=mocks_test.go -package=$GOPACKAGE . Logger

internal/portforward/service/mocks_test.go

@@ -0,0 +1,82 @@
+// Code generated by MockGen. DO NOT EDIT.
+// Source: github.com/qdm12/gluetun/internal/portforward/service (interfaces: Logger)
+
+// Package service is a generated GoMock package.
+package service
+
+import (
+	reflect "reflect"
+
+	gomock "github.com/golang/mock/gomock"
+)
+
+// MockLogger is a mock of Logger interface.
+type MockLogger struct {
+	ctrl     *gomock.Controller
+	recorder *MockLoggerMockRecorder
+}
+
+// MockLoggerMockRecorder is the mock recorder for MockLogger.
+type MockLoggerMockRecorder struct {
+	mock *MockLogger
+}
+
+// NewMockLogger creates a new mock instance.
+func NewMockLogger(ctrl *gomock.Controller) *MockLogger {
+	mock := &MockLogger{ctrl: ctrl}
+	mock.recorder = &MockLoggerMockRecorder{mock}
+	return mock
+}
+
+// EXPECT returns an object that allows the caller to indicate expected use.
+func (m *MockLogger) EXPECT() *MockLoggerMockRecorder {
+	return m.recorder
+}
+
+// Debug mocks base method.
+func (m *MockLogger) Debug(arg0 string) {
+	m.ctrl.T.Helper()
+	m.ctrl.Call(m, "Debug", arg0)
+}
+
+// Debug indicates an expected call of Debug.
+func (mr *MockLoggerMockRecorder) Debug(arg0 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Debug", reflect.TypeOf((*MockLogger)(nil).Debug), arg0)
+}
+
+// Error mocks base method.
+func (m *MockLogger) Error(arg0 string) {
+	m.ctrl.T.Helper()
+	m.ctrl.Call(m, "Error", arg0)
+}
+
+// Error indicates an expected call of Error.
+func (mr *MockLoggerMockRecorder) Error(arg0 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Error", reflect.TypeOf((*MockLogger)(nil).Error), arg0)
+}
+
+// Info mocks base method.
+func (m *MockLogger) Info(arg0 string) {
+	m.ctrl.T.Helper()
+	m.ctrl.Call(m, "Info", arg0)
+}
+
+// Info indicates an expected call of Info.
+func (mr *MockLoggerMockRecorder) Info(arg0 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Info", reflect.TypeOf((*MockLogger)(nil).Info), arg0)
+}
+
+// Warn mocks base method.
+func (m *MockLogger) Warn(arg0 string) {
+	m.ctrl.T.Helper()
+	m.ctrl.Call(m, "Warn", arg0)
+}
+
+// Warn indicates an expected call of Warn.
+func (mr *MockLoggerMockRecorder) Warn(arg0 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Warn", reflect.TypeOf((*MockLogger)(nil).Warn), arg0)
+}

internal/portforward/service/service.go

@@ -19,6 +19,7 @@ type Service struct {
 	client      *http.Client
 	portAllower PortAllower
 	logger      Logger
+	cmder       Cmder
 	// Internal channels and locks
 	startStopMutex sync.Mutex
 	keepPortCancel context.CancelFunc
@@ -26,7 +27,7 @@ type Service struct {
 }
 
 func New(settings Settings, routing Routing, client *http.Client,
-	portAllower PortAllower, logger Logger, puid, pgid int,
+	portAllower PortAllower, logger Logger, cmder Cmder, puid, pgid int,
 ) *Service {
 	return &Service{
 		// Fixed parameters
@@ -38,6 +39,7 @@ func New(settings Settings, routing Routing, client *http.Client,
 		client:      client,
 		portAllower: portAllower,
 		logger:      logger,
+		cmder:       cmder,
 	}
 }
 

internal/portforward/service/settings.go

@@ -12,6 +12,8 @@ type Settings struct {
 	Enabled        *bool
 	PortForwarder  PortForwarder
 	Filepath       string
+	UpCommand      string
+	DownCommand    string
 	Interface      string // needed for PIA, PrivateVPN and ProtonVPN, tun0 for example
 	ServerName     string // needed for PIA
 	CanPortForward bool   // needed for PIA
@@ -24,6 +26,8 @@ func (s Settings) Copy() (copied Settings) {
 	copied.Enabled = gosettings.CopyPointer(s.Enabled)
 	copied.PortForwarder = s.PortForwarder
 	copied.Filepath = s.Filepath
+	copied.UpCommand = s.UpCommand
+	copied.DownCommand = s.DownCommand
 	copied.Interface = s.Interface
 	copied.ServerName = s.ServerName
 	copied.CanPortForward = s.CanPortForward
@@ -37,6 +41,8 @@ func (s *Settings) OverrideWith(update Settings) {
 	s.Enabled = gosettings.OverrideWithPointer(s.Enabled, update.Enabled)
 	s.PortForwarder = gosettings.OverrideWithComparable(s.PortForwarder, update.PortForwarder)
 	s.Filepath = gosettings.OverrideWithComparable(s.Filepath, update.Filepath)
+	s.UpCommand = gosettings.OverrideWithComparable(s.UpCommand, update.UpCommand)
+	s.DownCommand = gosettings.OverrideWithComparable(s.DownCommand, update.DownCommand)
 	s.Interface = gosettings.OverrideWithComparable(s.Interface, update.Interface)
 	s.ServerName = gosettings.OverrideWithComparable(s.ServerName, update.ServerName)
 	s.CanPortForward = gosettings.OverrideWithComparable(s.CanPortForward, update.CanPortForward)

internal/portforward/service/start.go

@@ -73,6 +73,14 @@ func (s *Service) Start(ctx context.Context) (runError <-chan error, err error)
 	s.ports = ports
 	s.portMutex.Unlock()
 
+	if s.settings.UpCommand != "" {
+		err = runCommand(ctx, s.cmder, s.logger, s.settings.UpCommand, ports)
+		if err != nil {
+			err = fmt.Errorf("running up command: %w", err)
+			s.logger.Error(err.Error())
+		}
+	}
+
 	keepPortCtx, keepPortCancel := context.WithCancel(context.Background())
 	s.keepPortCancel = keepPortCancel
 	runErrorCh := make(chan error)

internal/portforward/service/stop.go

@@ -3,7 +3,7 @@ package service
 import (
 	"context"
 	"fmt"
-	"os"
+	"time"
 )
 
 func (s *Service) Stop() (err error) {
@@ -30,6 +30,17 @@ func (s *Service) cleanup() (err error) {
 	s.portMutex.Lock()
 	defer s.portMutex.Unlock()
 
+	if s.settings.DownCommand != "" {
+		const downTimeout = 60 * time.Second
+		ctx, cancel := context.WithTimeout(context.Background(), downTimeout)
+		defer cancel()
+		err = runCommand(ctx, s.cmder, s.logger, s.settings.DownCommand, s.ports)
+		if err != nil {
+			err = fmt.Errorf("running down command: %w", err)
+			s.logger.Error(err.Error())
+		}
+	}
+
 	for _, port := range s.ports {
 		err = s.portAllower.RemoveAllowedPort(context.Background(), port)
 		if err != nil {
@@ -49,10 +60,10 @@ func (s *Service) cleanup() (err error) {
 	s.ports = nil
 
 	filepath := s.settings.Filepath
-	s.logger.Info("removing port file " + filepath)
+	s.logger.Info("clearing port file " + filepath)
-	err = os.Remove(filepath)
+	err = s.writePortForwardedFile(nil)
 	if err != nil {
-		return fmt.Errorf("removing port file: %w", err)
+		return fmt.Errorf("clearing port file: %w", err)
 	}
 
 	return nil

internal/provider/common/updater.go

@@ -13,6 +13,7 @@ var (
 	ErrNotEnoughServers     = errors.New("not enough servers found")
 	ErrHTTPStatusCodeNotOK  = errors.New("HTTP status code not OK")
 	ErrIPFetcherUnsupported = errors.New("IP fetcher not supported")
+	ErrCredentialsMissing   = errors.New("credentials missing")
 )
 
 type Fetcher interface {

internal/provider/cyberghost/provider.go

@@ -15,12 +15,12 @@ type Provider struct {
 }
 
 func New(storage common.Storage, randSource rand.Source,
-	parallelResolver common.ParallelResolver,
+	updaterWarner common.Warner, parallelResolver common.ParallelResolver,
 ) *Provider {
 	return &Provider{
 		storage:    storage,
 		randSource: randSource,
-		Fetcher:    updater.New(parallelResolver),
+		Fetcher:    updater.New(parallelResolver, updaterWarner),
 	}
 }
 

internal/provider/cyberghost/updater/servers.go

@@ -16,7 +16,10 @@ func (u *Updater) FetchServers(ctx context.Context, minServers int) (
 
 	possibleHosts := possibleServers.hostsSlice()
 	resolveSettings := parallelResolverSettings(possibleHosts)
-	hostToIPs, _, err := u.parallelResolver.Resolve(ctx, resolveSettings)
+	hostToIPs, warnings, err := u.parallelResolver.Resolve(ctx, resolveSettings)
+	for _, warning := range warnings {
+		u.warner.Warn(warning)
+	}
 	if err != nil {
 		return nil, err
 	}

internal/provider/cyberghost/updater/updater.go

@@ -6,10 +6,12 @@ import (
 
 type Updater struct {
 	parallelResolver common.ParallelResolver
+	warner           common.Warner
 }
 
-func New(parallelResolver common.ParallelResolver) *Updater {
+func New(parallelResolver common.ParallelResolver, warner common.Warner) *Updater {
 	return &Updater{
 		parallelResolver: parallelResolver,
+		warner:           warner,
 	}
 }

internal/provider/ipvanish/openvpnconf.go

@@ -14,13 +14,17 @@ func (p *Provider) OpenVPNConfig(connection models.Connection,
 	providerSettings := utils.OpenVPNProviderSettings{
 		AuthUserPass: true,
 		Ciphers: []string{
+			openvpn.AES256gcm,
 			openvpn.AES256cbc,
 		},
 		Auth:           openvpn.SHA256,
 		VerifyX509Type: "name",
 		TLSCipher:      "TLS-DHE-RSA-WITH-AES-256-CBC-SHA:TLS-DHE-DSS-WITH-AES-256-CBC-SHA:TLS-RSA-WITH-AES-256-CBC-SHA",
-		CAs:            []string{"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"}, //nolint:lll
+		CAs:            []string{"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"}, //nolint:lll
 		MssFix:         1320,
+		ExtraLines: []string{
+			"comp-lzo", // Explicitly disable compression
+		},
 	}
 	return utils.OpenVPNConfig(providerSettings, connection, settings, ipv6Supported)
 }

internal/provider/protonvpn/provider.go

@@ -18,11 +18,12 @@ type Provider struct {
 
 func New(storage common.Storage, randSource rand.Source,
 	client *http.Client, updaterWarner common.Warner,
+	email, password string,
 ) *Provider {
 	return &Provider{
 		storage:    storage,
 		randSource: randSource,
-		Fetcher:    updater.New(client, updaterWarner),
+		Fetcher:    updater.New(client, updaterWarner, email, password),
 	}
 }
 

internal/provider/protonvpn/updater/api.go

@@ -1,15 +1,562 @@
 package updater
 
 import (
+	"bytes"
 	"context"
+	crand "crypto/rand"
+	"encoding/base64"
 	"encoding/json"
 	"errors"
 	"fmt"
+	"io"
+	"math/rand/v2"
 	"net/http"
 	"net/netip"
+	"slices"
+	"strings"
+
+	srp "github.com/ProtonMail/go-srp"
 )
 
-var ErrHTTPStatusCodeNotOK = errors.New("HTTP status code not OK")
+// apiClient is a minimal Proton v4 API client which can handle all the
+// oddities of Proton's authentication flow they want to keep hidden
+// from the public.
+type apiClient struct {
+	apiURLBase string
+	httpClient *http.Client
+	appVersion string
+	userAgent  string
+	generator  *rand.ChaCha8
+}
+
+// newAPIClient returns an [apiClient] with sane defaults matching Proton's
+// insane expectations.
+func newAPIClient(ctx context.Context, httpClient *http.Client) (client *apiClient, err error) {
+	var seed [32]byte
+	_, _ = crand.Read(seed[:])
+	generator := rand.NewChaCha8(seed)
+
+	// Pick a random user agent from this list. Because I'm not going to tell
+	// Proton shit on where all these funny requests are coming from, given their
+	// unhelpfulness in figuring out their authentication flow.
+	userAgents := [...]string{
+		"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:143.0) Gecko/20100101 Firefox/143.0",
+		"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:143.0) Gecko/20100101 Firefox/143.0",
+		"Mozilla/5.0 (X11; Linux x86_64; rv:143.0) Gecko/20100101 Firefox/143.0",
+	}
+	userAgent := userAgents[generator.Uint64()%uint64(len(userAgents))]
+
+	appVersion, err := getMostRecentStableTag(ctx, httpClient)
+	if err != nil {
+		return nil, fmt.Errorf("getting most recent version for proton app: %w", err)
+	}
+
+	return &apiClient{
+		apiURLBase: "https://account.proton.me/api",
+		httpClient: httpClient,
+		appVersion: appVersion,
+		userAgent:  userAgent,
+		generator:  generator,
+	}, nil
+}
+
+var ErrCodeNotSuccess = errors.New("response code is not success")
+
+// setHeaders sets the minimal necessary headers for Proton API requests
+// to succeed without being blocked by their "security" measures.
+// See for example [getMostRecentStableTag] on how the app version must
+// be set to a recent version or they block your request. "SeCuRiTy"...
+func (c *apiClient) setHeaders(request *http.Request, cookie cookie) {
+	request.Header.Set("Cookie", cookie.String())
+	request.Header.Set("User-Agent", c.userAgent)
+	request.Header.Set("x-pm-appversion", c.appVersion)
+	request.Header.Set("x-pm-locale", "en_US")
+	request.Header.Set("x-pm-uid", cookie.uid)
+}
+
+// authenticate performs the full Proton authentication flow
+// to obtain an authenticated cookie (uid, token and session ID).
+func (c *apiClient) authenticate(ctx context.Context, email, password string,
+) (authCookie cookie, err error) {
+	sessionID, err := c.getSessionID(ctx)
+	if err != nil {
+		return cookie{}, fmt.Errorf("getting session ID: %w", err)
+	}
+
+	tokenType, accessToken, refreshToken, uid, err := c.getUnauthSession(ctx, sessionID)
+	if err != nil {
+		return cookie{}, fmt.Errorf("getting unauthenticated session data: %w", err)
+	}
+
+	cookieToken, err := c.cookieToken(ctx, sessionID, tokenType, accessToken, refreshToken, uid)
+	if err != nil {
+		return cookie{}, fmt.Errorf("getting cookie token: %w", err)
+	}
+
+	unauthCookie := cookie{
+		uid:       uid,
+		token:     cookieToken,
+		sessionID: sessionID,
+	}
+	username, modulusPGPClearSigned, serverEphemeralBase64, saltBase64,
+		srpSessionHex, version, err := c.authInfo(ctx, email, unauthCookie)
+	if err != nil {
+		return cookie{}, fmt.Errorf("getting auth information: %w", err)
+	}
+
+	// Prepare SRP proof generator using Proton's official SRP parameters and hashing.
+	srpAuth, err := srp.NewAuth(version, username, []byte(password),
+		saltBase64, modulusPGPClearSigned, serverEphemeralBase64)
+	if err != nil {
+		return cookie{}, fmt.Errorf("initializing SRP auth: %w", err)
+	}
+
+	// Generate SRP proofs (A, M1) with the usual 2048-bit modulus.
+	const modulusBits = 2048
+	proofs, err := srpAuth.GenerateProofs(modulusBits)
+	if err != nil {
+		return cookie{}, fmt.Errorf("generating SRP proofs: %w", err)
+	}
+
+	authCookie, err = c.auth(ctx, unauthCookie, email, srpSessionHex, proofs)
+	if err != nil {
+		return cookie{}, fmt.Errorf("authentifying: %w", err)
+	}
+
+	return authCookie, nil
+}
+
+var ErrSessionIDNotFound = errors.New("session ID not found in cookies")
+
+func (c *apiClient) getSessionID(ctx context.Context) (sessionID string, err error) {
+	const url = "https://account.proton.me/vpn"
+	request, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+	if err != nil {
+		return "", fmt.Errorf("creating request: %w", err)
+	}
+
+	response, err := c.httpClient.Do(request)
+	if err != nil {
+		return "", err
+	}
+	err = response.Body.Close()
+	if err != nil {
+		return "", fmt.Errorf("closing response body: %w", err)
+	}
+
+	for _, cookie := range response.Cookies() {
+		if cookie.Name == "Session-Id" {
+			return cookie.Value, nil
+		}
+	}
+
+	return "", fmt.Errorf("%w", ErrSessionIDNotFound)
+}
+
+var ErrDataFieldMissing = errors.New("data field missing in response")
+
+func (c *apiClient) getUnauthSession(ctx context.Context, sessionID string) (
+	tokenType, accessToken, refreshToken, uid string, err error,
+) {
+	request, err := http.NewRequestWithContext(ctx, http.MethodPost, c.apiURLBase+"/auth/v4/sessions", nil)
+	if err != nil {
+		return "", "", "", "", fmt.Errorf("creating request: %w", err)
+	}
+	unauthCookie := cookie{
+		sessionID: sessionID,
+	}
+	c.setHeaders(request, unauthCookie)
+
+	response, err := c.httpClient.Do(request)
+	if err != nil {
+		return "", "", "", "", err
+	}
+	defer response.Body.Close()
+
+	responseBody, err := io.ReadAll(response.Body)
+	if err != nil {
+		return "", "", "", "", fmt.Errorf("reading response body: %w", err)
+	} else if response.StatusCode != http.StatusOK {
+		return "", "", "", "", buildError(response.StatusCode, responseBody)
+	}
+
+	var data struct {
+		Code         uint     `json:"Code"`         // 1000 on success
+		AccessToken  string   `json:"AccessToken"`  // 32-chars lowercase and digits
+		RefreshToken string   `json:"RefreshToken"` // 32-chars lowercase and digits
+		TokenType    string   `json:"TokenType"`    // "Bearer"
+		Scopes       []string `json:"Scopes"`       // should be [] for our usage
+		UID          string   `json:"UID"`          // 32-chars lowercase and digits
+		LocalID      uint     `json:"LocalID"`      // 0 in my case
+	}
+
+	err = json.Unmarshal(responseBody, &data)
+	if err != nil {
+		return "", "", "", "", fmt.Errorf("decoding response body: %w", err)
+	}
+
+	const successCode = 1000
+	switch {
+	case data.Code != successCode:
+		return "", "", "", "", fmt.Errorf("%w: expected %d got %d",
+			ErrCodeNotSuccess, successCode, data.Code)
+	case data.AccessToken == "":
+		return "", "", "", "", fmt.Errorf("%w: access token is empty", ErrDataFieldMissing)
+	case data.RefreshToken == "":
+		return "", "", "", "", fmt.Errorf("%w: refresh token is empty", ErrDataFieldMissing)
+	case data.TokenType == "":
+		return "", "", "", "", fmt.Errorf("%w: token type is empty", ErrDataFieldMissing)
+	case data.UID == "":
+		return "", "", "", "", fmt.Errorf("%w: UID is empty", ErrDataFieldMissing)
+	}
+	// Ignore Scopes and LocalID fields, we don't use them.
+
+	return data.TokenType, data.AccessToken, data.RefreshToken, data.UID, nil
+}
+
+var ErrUIDMismatch = errors.New("UID in response does not match request UID")
+
+func (c *apiClient) cookieToken(ctx context.Context, sessionID, tokenType, accessToken,
+	refreshToken, uid string,
+) (cookieToken string, err error) {
+	type requestBodySchema struct {
+		GrantType    string `json:"GrantType"`    // "refresh_token"
+		Persistent   uint   `json:"Persistent"`   // 0
+		RedirectURI  string `json:"RedirectURI"`  // "https://protonmail.com"
+		RefreshToken string `json:"RefreshToken"` // 32-chars lowercase and digits
+		ResponseType string `json:"ResponseType"` // "token"
+		State        string `json:"State"`        // 24-chars letters and digits
+		UID          string `json:"UID"`          // 32-chars lowercase and digits
+	}
+	requestBody := requestBodySchema{
+		GrantType:    "refresh_token",
+		Persistent:   0,
+		RedirectURI:  "https://protonmail.com",
+		RefreshToken: refreshToken,
+		ResponseType: "token",
+		State:        generateLettersDigits(c.generator, 24), //nolint:mnd
+		UID:          uid,
+	}
+
+	buffer := bytes.NewBuffer(nil)
+	encoder := json.NewEncoder(buffer)
+	if err := encoder.Encode(requestBody); err != nil {
+		return "", fmt.Errorf("encoding request body: %w", err)
+	}
+
+	request, err := http.NewRequestWithContext(ctx, http.MethodPost, c.apiURLBase+"/core/v4/auth/cookies", buffer)
+	if err != nil {
+		return "", fmt.Errorf("creating request: %w", err)
+	}
+	unauthCookie := cookie{
+		uid:       uid,
+		sessionID: sessionID,
+	}
+	c.setHeaders(request, unauthCookie)
+	request.Header.Set("Authorization", tokenType+" "+accessToken)
+
+	response, err := c.httpClient.Do(request)
+	if err != nil {
+		return "", err
+	}
+	defer response.Body.Close()
+
+	responseBody, err := io.ReadAll(response.Body)
+	if err != nil {
+		return "", fmt.Errorf("reading response body: %w", err)
+	} else if response.StatusCode != http.StatusOK {
+		return "", buildError(response.StatusCode, responseBody)
+	}
+
+	var cookies struct {
+		Code           uint   `json:"Code"`           // 1000 on success
+		UID            string `json:"UID"`            // should match request UID
+		LocalID        uint   `json:"LocalID"`        // 0
+		RefreshCounter uint   `json:"RefreshCounter"` // 1
+	}
+	err = json.Unmarshal(responseBody, &cookies)
+	if err != nil {
+		return "", fmt.Errorf("decoding response body: %w", err)
+	}
+
+	const successCode = 1000
+	switch {
+	case cookies.Code != successCode:
+		return "", fmt.Errorf("%w: expected %d got %d",
+			ErrCodeNotSuccess, successCode, cookies.Code)
+	case cookies.UID != requestBody.UID:
+		return "", fmt.Errorf("%w: expected %s got %s",
+			ErrUIDMismatch, requestBody.UID, cookies.UID)
+	}
+	// Ignore LocalID and RefreshCounter fields, we don't use them.
+
+	for _, cookie := range response.Cookies() {
+		if cookie.Name == "AUTH-"+uid {
+			return cookie.Value, nil
+		}
+	}
+
+	return "", fmt.Errorf("%w", ErrAuthCookieNotFound)
+}
+
+var ErrUsernameDoesNotExist = errors.New("username does not exist")
+
+// authInfo fetches SRP parameters for the account.
+func (c *apiClient) authInfo(ctx context.Context, email string, unauthCookie cookie) (
+	username, modulusPGPClearSigned, serverEphemeralBase64, saltBase64, srpSessionHex string,
+	version int, err error,
+) {
+	type requestBodySchema struct {
+		Intent   string `json:"Intent"` // "Proton"
+		Username string `json:"Username"`
+	}
+	requestBody := requestBodySchema{
+		Intent:   "Proton",
+		Username: email,
+	}
+
+	buffer := bytes.NewBuffer(nil)
+	encoder := json.NewEncoder(buffer)
+	if err := encoder.Encode(requestBody); err != nil {
+		return "", "", "", "", "", 0, fmt.Errorf("encoding request body: %w", err)
+	}
+
+	request, err := http.NewRequestWithContext(ctx, http.MethodPost, c.apiURLBase+"/core/v4/auth/info", buffer)
+	if err != nil {
+		return "", "", "", "", "", 0, fmt.Errorf("creating request: %w", err)
+	}
+	c.setHeaders(request, unauthCookie)
+
+	response, err := c.httpClient.Do(request)
+	if err != nil {
+		return "", "", "", "", "", 0, err
+	}
+	defer response.Body.Close()
+
+	responseBody, err := io.ReadAll(response.Body)
+	if err != nil {
+		return "", "", "", "", "", 0, fmt.Errorf("reading response body: %w", err)
+	} else if response.StatusCode != http.StatusOK {
+		return "", "", "", "", "", 0, buildError(response.StatusCode, responseBody)
+	}
+
+	var info struct {
+		Code            uint   `json:"Code"`              // 1000 on success
+		Modulus         string `json:"Modulus"`           // PGP clearsigned modulus string
+		ServerEphemeral string `json:"ServerEphemeral"`   // base64
+		Version         *uint  `json:"Version,omitempty"` // 4 as of 2025-10-26
+		Salt            string `json:"Salt"`              // base64
+		SRPSession      string `json:"SRPSession"`        // hexadecimal
+		Username        string `json:"Username"`          // user without @domain.com. Mine has its first letter capitalized.
+	}
+	err = json.Unmarshal(responseBody, &info)
+	if err != nil {
+		return "", "", "", "", "", 0, fmt.Errorf("decoding response body: %w", err)
+	}
+
+	const successCode = 1000
+	switch {
+	case info.Code != successCode:
+		return "", "", "", "", "", 0, fmt.Errorf("%w: expected %d got %d",
+			ErrCodeNotSuccess, successCode, info.Code)
+	case info.Modulus == "":
+		return "", "", "", "", "", 0, fmt.Errorf("%w: modulus is empty", ErrDataFieldMissing)
+	case info.ServerEphemeral == "":
+		return "", "", "", "", "", 0, fmt.Errorf("%w: server ephemeral is empty", ErrDataFieldMissing)
+	case info.Salt == "":
+		return "", "", "", "", "", 0, fmt.Errorf("%w (salt data field is empty)", ErrUsernameDoesNotExist)
+	case info.SRPSession == "":
+		return "", "", "", "", "", 0, fmt.Errorf("%w: SRP session is empty", ErrDataFieldMissing)
+	case info.Username == "":
+		return "", "", "", "", "", 0, fmt.Errorf("%w: username is empty", ErrDataFieldMissing)
+	case info.Version == nil:
+		return "", "", "", "", "", 0, fmt.Errorf("%w: version is missing", ErrDataFieldMissing)
+	}
+
+	version = int(*info.Version) //nolint:gosec
+	return info.Username, info.Modulus, info.ServerEphemeral, info.Salt,
+		info.SRPSession, version, nil
+}
+
+type cookie struct {
+	uid       string
+	token     string
+	sessionID string
+}
+
+func (c *cookie) String() string {
+	s := ""
+	if c.token != "" {
+		s += fmt.Sprintf("AUTH-%s=%s; ", c.uid, c.token)
+	}
+	if c.sessionID != "" {
+		s += fmt.Sprintf("Session-Id=%s; ", c.sessionID)
+	}
+	if c.token != "" {
+		s += "Tag=default; iaas=W10; Domain=proton.me; Feature=VPNDashboard:A"
+	}
+	return s
+}
+
+var (
+	// ErrServerProofNotValid indicates the M2 from the server didn't match the expected proof.
+	ErrServerProofNotValid = errors.New("server proof from server is not valid")
+	ErrVPNScopeNotFound    = errors.New("VPN scope not found in scopes")
+	ErrTwoFANotSupported   = errors.New("two factor authentication not supported in this client")
+	ErrAuthCookieNotFound  = errors.New("auth cookie not found")
+)
+
+// auth performs the SRP proof submission (and optionally TOTP) to obtain tokens.
+func (c *apiClient) auth(ctx context.Context, unauthCookie cookie,
+	username, srpSession string, proofs *srp.Proofs,
+) (authCookie cookie, err error) {
+	clientEphemeral := base64.StdEncoding.EncodeToString(proofs.ClientEphemeral)
+	clientProof := base64.StdEncoding.EncodeToString(proofs.ClientProof)
+
+	type requestBodySchema struct {
+		ClientEphemeral string            `json:"ClientEphemeral"`   // base64(A)
+		ClientProof     string            `json:"ClientProof"`       // base64(M1)
+		Payload         map[string]string `json:"Payload,omitempty"` // not sure
+		SRPSession      string            `json:"SRPSession"`        // hexadecimal
+		Username        string            `json:"Username"`          // user@protonmail.com
+	}
+	requestBody := requestBodySchema{
+		ClientEphemeral: clientEphemeral,
+		ClientProof:     clientProof,
+		SRPSession:      srpSession,
+		Username:        username,
+	}
+
+	buffer := bytes.NewBuffer(nil)
+	encoder := json.NewEncoder(buffer)
+	if err := encoder.Encode(requestBody); err != nil {
+		return cookie{}, fmt.Errorf("encoding request body: %w", err)
+	}
+
+	request, err := http.NewRequestWithContext(ctx, http.MethodPost, c.apiURLBase+"/core/v4/auth", buffer)
+	if err != nil {
+		return cookie{}, fmt.Errorf("creating request: %w", err)
+	}
+	c.setHeaders(request, unauthCookie)
+
+	response, err := c.httpClient.Do(request)
+	if err != nil {
+		return cookie{}, err
+	}
+	defer response.Body.Close()
+
+	responseBody, err := io.ReadAll(response.Body)
+	if err != nil {
+		return cookie{}, fmt.Errorf("reading response body: %w", err)
+	} else if response.StatusCode != http.StatusOK {
+		return cookie{}, buildError(response.StatusCode, responseBody)
+	}
+
+	type twoFAStatus uint
+	//nolint:unused
+	const (
+		twoFADisabled twoFAStatus = iota
+		twoFAHasTOTP
+		twoFAHasFIDO2
+		twoFAHasFIDO2AndTOTP
+	)
+	type twoFAInfo struct {
+		Enabled twoFAStatus `json:"Enabled"`
+		FIDO2   struct {
+			AuthenticationOptions any   `json:"AuthenticationOptions"`
+			RegisteredKeys        []any `json:"RegisteredKeys"`
+		} `json:"FIDO2"`
+		TOTP uint `json:"TOTP"`
+	}
+
+	var auth struct {
+		Code              uint      `json:"Code"`         // 1000 on success
+		LocalID           uint      `json:"LocalID"`      // 7 in my case
+		Scopes            []string  `json:"Scopes"`       // this should contain "vpn". Same as `Scope` field value.
+		UID               string    `json:"UID"`          // same as `Uid` field value
+		UserID            string    `json:"UserID"`       // base64
+		EventID           string    `json:"EventID"`      // base64
+		PasswordMode      uint      `json:"PasswordMode"` // 1 in my case
+		ServerProof       string    `json:"ServerProof"`  // base64(M2)
+		TwoFactor         uint      `json:"TwoFactor"`    // 0 if 2FA not required
+		TwoFA             twoFAInfo `json:"2FA"`
+		TemporaryPassword uint      `json:"TemporaryPassword"` // 0 in my case
+	}
+
+	err = json.Unmarshal(responseBody, &auth)
+	if err != nil {
+		return cookie{}, fmt.Errorf("decoding response body: %w", err)
+	}
+
+	m2, err := base64.StdEncoding.DecodeString(auth.ServerProof)
+	if err != nil {
+		return cookie{}, fmt.Errorf("decoding server proof: %w", err)
+	}
+	if !bytes.Equal(m2, proofs.ExpectedServerProof) {
+		return cookie{}, fmt.Errorf("%w: expected %x got %x",
+			ErrServerProofNotValid, proofs.ExpectedServerProof, m2)
+	}
+
+	const successCode = 1000
+	switch {
+	case auth.Code != successCode:
+		return cookie{}, fmt.Errorf("%w: expected %d got %d",
+			ErrCodeNotSuccess, successCode, auth.Code)
+	case auth.UID != unauthCookie.uid:
+		return cookie{}, fmt.Errorf("%w: expected %s got %s",
+			ErrUIDMismatch, unauthCookie.uid, auth.UID)
+	case auth.TwoFactor != 0:
+		return cookie{}, fmt.Errorf("%w", ErrTwoFANotSupported)
+	case !slices.Contains(auth.Scopes, "vpn"):
+		return cookie{}, fmt.Errorf("%w: in %v", ErrVPNScopeNotFound, auth.Scopes)
+	}
+
+	for _, setCookieHeader := range response.Header.Values("Set-Cookie") {
+		parts := strings.Split(setCookieHeader, ";")
+		for _, part := range parts {
+			if strings.HasPrefix(part, "AUTH-"+unauthCookie.uid+"=") {
+				authCookie = unauthCookie
+				authCookie.token = strings.TrimPrefix(part, "AUTH-"+unauthCookie.uid+"=")
+				return authCookie, nil
+			}
+		}
+	}
+
+	return cookie{}, fmt.Errorf("%w: in HTTP headers %s",
+		ErrAuthCookieNotFound, httpHeadersToString(response.Header))
+}
+
+// generateLettersDigits mimicing Proton's own random string generator:
+// https://github.com/ProtonMail/WebClients/blob/e4d7e4ab9babe15b79a131960185f9f8275512cd/packages/utils/generateLettersDigits.ts
+func generateLettersDigits(rng *rand.ChaCha8, length uint) string {
+	const charset = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
+	return generateFromCharset(rng, length, charset)
+}
+
+func generateFromCharset(rng *rand.ChaCha8, length uint, charset string) string {
+	result := make([]byte, length)
+	randomBytes := make([]byte, length)
+	_, _ = rng.Read(randomBytes)
+	for i := range length {
+		result[i] = charset[int(randomBytes[i])%len(charset)]
+	}
+	return string(result)
+}
+
+func httpHeadersToString(headers http.Header) string {
+	var builder strings.Builder
+	first := true
+	for key, values := range headers {
+		for _, value := range values {
+			if !first {
+				builder.WriteString(", ")
+			}
+			builder.WriteString(fmt.Sprintf("%s: %s", key, value))
+			first = false
+		}
+	}
+	return builder.String()
+}
 
 type apiData struct {
 	LogicalServers []logicalServer `json:"LogicalServers"`
@@ -33,25 +580,25 @@ type physicalServer struct {
 	X25519PublicKey string     `json:"X25519PublicKey"`
 }
 
-func fetchAPI(ctx context.Context, client *http.Client) (
+func (c *apiClient) fetchServers(ctx context.Context, cookie cookie) (
 	data apiData, err error,
 ) {
-	const url = "https://api.protonmail.ch/vpn/logicals"
+	const url = "https://account.proton.me/api/vpn/logicals"
-
 	request, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
 	if err != nil {
 		return data, err
 	}
+	c.setHeaders(request, cookie)
 
-	response, err := client.Do(request)
+	response, err := c.httpClient.Do(request)
 	if err != nil {
 		return data, err
 	}
 	defer response.Body.Close()
 
 	if response.StatusCode != http.StatusOK {
-		return data, fmt.Errorf("%w: %d %s", ErrHTTPStatusCodeNotOK,
+		b, _ := io.ReadAll(response.Body)
-			response.StatusCode, response.Status)
+		return data, buildError(response.StatusCode, b)
 	}
 
 	decoder := json.NewDecoder(response.Body)
@@ -59,9 +606,31 @@ func fetchAPI(ctx context.Context, client *http.Client) (
 		return data, fmt.Errorf("decoding response body: %w", err)
 	}
 
-	if err := response.Body.Close(); err != nil {
-		return data, err
-	}
-
 	return data, nil
 }
+
+var ErrHTTPStatusCodeNotOK = errors.New("HTTP status code not OK")
+
+func buildError(httpCode int, body []byte) error {
+	prettyCode := http.StatusText(httpCode)
+	var protonError struct {
+		Code    *int              `json:"Code,omitempty"`
+		Error   *string           `json:"Error,omitempty"`
+		Details map[string]string `json:"Details"`
+	}
+	decoder := json.NewDecoder(bytes.NewReader(body))
+	decoder.DisallowUnknownFields()
+	err := decoder.Decode(&protonError)
+	if err != nil || protonError.Error == nil || protonError.Code == nil {
+		return fmt.Errorf("%w: %s: %s",
+			ErrHTTPStatusCodeNotOK, prettyCode, body)
+	}
+
+	details := make([]string, 0, len(protonError.Details))
+	for key, value := range protonError.Details {
+		details = append(details, fmt.Sprintf("%s: %s", key, value))
+	}
+
+	return fmt.Errorf("%w: %s: %s (code %d with details: %s)",
+		ErrHTTPStatusCodeNotOK, prettyCode, *protonError.Error, *protonError.Code, strings.Join(details, ", "))
+}

internal/provider/protonvpn/updater/servers.go

@@ -13,9 +13,26 @@ import (
 func (u *Updater) FetchServers(ctx context.Context, minServers int) (
 	servers []models.Server, err error,
 ) {
-	data, err := fetchAPI(ctx, u.client)
+	switch {
+	case u.email == "":
+		return nil, fmt.Errorf("%w: email is empty", common.ErrCredentialsMissing)
+	case u.password == "":
+		return nil, fmt.Errorf("%w: password is empty", common.ErrCredentialsMissing)
+	}
+
+	apiClient, err := newAPIClient(ctx, u.client)
 	if err != nil {
-		return nil, err
+		return nil, fmt.Errorf("creating API client: %w", err)
+	}
+
+	cookie, err := apiClient.authenticate(ctx, u.email, u.password)
+	if err != nil {
+		return nil, fmt.Errorf("authentifying with Proton: %w", err)
+	}
+
+	data, err := apiClient.fetchServers(ctx, cookie)
+	if err != nil {
+		return nil, fmt.Errorf("fetching logical servers: %w", err)
 	}
 
 	countryCodes := constants.CountryCodes()

internal/provider/protonvpn/updater/updater.go

@@ -7,13 +7,17 @@ import (
 )
 
 type Updater struct {
-	client *http.Client
+	client   *http.Client
-	warner common.Warner
+	email    string
+	password string
+	warner   common.Warner
 }
 
-func New(client *http.Client, warner common.Warner) *Updater {
+func New(client *http.Client, warner common.Warner, email, password string) *Updater {
 	return &Updater{
-		client: client,
+		client:   client,
-		warner: warner,
+		email:    email,
+		password: password,
+		warner:   warner,
 	}
 }

internal/provider/protonvpn/updater/version.go

@@ -0,0 +1,64 @@
+package updater
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"regexp"
+	"strings"
+)
+
+// getMostRecentStableTag finds the most recent proton-account stable tag version,
+// in order to use it in the x-pm-appversion http request header. Because if we do
+// fall behind on versioning, Proton doesn't like it because they like to create
+// complications where there is no need for it. Hence this function.
+func getMostRecentStableTag(ctx context.Context, client *http.Client) (version string, err error) {
+	page := 1
+	regexVersion := regexp.MustCompile(`^proton-account@(\d+\.\d+\.\d+\.\d+)$`)
+	for ctx.Err() == nil {
+		url := "https://api.github.com/repos/ProtonMail/WebClients/tags?per_page=30&page=" + fmt.Sprint(page)
+
+		request, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+		if err != nil {
+			return "", fmt.Errorf("creating request: %w", err)
+		}
+		request.Header.Set("Accept", "application/vnd.github.v3+json")
+
+		response, err := client.Do(request)
+		if err != nil {
+			return "", err
+		}
+		defer response.Body.Close()
+
+		data, err := io.ReadAll(response.Body)
+		if err != nil {
+			return "", fmt.Errorf("reading response body: %w", err)
+		}
+
+		if response.StatusCode != http.StatusOK {
+			return "", fmt.Errorf("%w: %s: %s", ErrHTTPStatusCodeNotOK, response.Status, data)
+		}
+
+		var tags []struct {
+			Name string `json:"name"`
+		}
+		err = json.Unmarshal(data, &tags)
+		if err != nil {
+			return "", fmt.Errorf("decoding JSON response: %w", err)
+		}
+
+		for _, tag := range tags {
+			if !regexVersion.MatchString(tag.Name) {
+				continue
+			}
+			version := "web-account@" + strings.TrimPrefix(tag.Name, "proton-account@")
+			return version, nil
+		}
+
+		page++
+	}
+
+	return "", fmt.Errorf("%w (queried %d pages)", context.Canceled, page)
+}

internal/provider/providers.go

@@ -54,7 +54,7 @@ type Extractor interface {
 func NewProviders(storage Storage, timeNow func() time.Time,
 	updaterWarner common.Warner, client *http.Client, unzipper common.Unzipper,
 	parallelResolver common.ParallelResolver, ipFetcher common.IPFetcher,
-	extractor custom.Extractor,
+	extractor custom.Extractor, credentials settings.Updater,
 ) *Providers {
 	randSource := rand.NewSource(timeNow().UnixNano())
 
@@ -62,7 +62,7 @@ func NewProviders(storage Storage, timeNow func() time.Time,
 	providerNameToProvider := map[string]Provider{
 		providers.Airvpn:                airvpn.New(storage, randSource, client),
 		providers.Custom:                custom.New(extractor),
-		providers.Cyberghost:            cyberghost.New(storage, randSource, parallelResolver),
+		providers.Cyberghost:            cyberghost.New(storage, randSource, updaterWarner, parallelResolver),
 		providers.Expressvpn:            expressvpn.New(storage, randSource, unzipper, updaterWarner, parallelResolver),
 		providers.Fastestvpn:            fastestvpn.New(storage, randSource, client, updaterWarner, parallelResolver),
 		providers.Giganews:              giganews.New(storage, randSource, unzipper, updaterWarner, parallelResolver),
@@ -75,7 +75,7 @@ func NewProviders(storage Storage, timeNow func() time.Time,
 		providers.Privado:               privado.New(storage, randSource, ipFetcher, unzipper, updaterWarner, parallelResolver),
 		providers.PrivateInternetAccess: privateinternetaccess.New(storage, randSource, timeNow, client),
 		providers.Privatevpn:            privatevpn.New(storage, randSource, unzipper, updaterWarner, parallelResolver),
-		providers.Protonvpn:             protonvpn.New(storage, randSource, client, updaterWarner),
+		providers.Protonvpn:             protonvpn.New(storage, randSource, client, updaterWarner, *credentials.ProtonEmail, *credentials.ProtonPassword),
 		providers.Purevpn:               purevpn.New(storage, randSource, ipFetcher, unzipper, updaterWarner, parallelResolver),
 		providers.SlickVPN:              slickvpn.New(storage, randSource, client, updaterWarner, parallelResolver),
 		providers.Surfshark:             surfshark.New(storage, randSource, client, unzipper, updaterWarner, parallelResolver),

internal/provider/vpnunlimited/openvpnconf.go

@@ -20,8 +20,8 @@ func (p *Provider) OpenVPNConfig(connection models.Connection,
 		Ciphers:       []string{openvpn.AES256cbc},
 		Auth:          openvpn.SHA512,
 		CAs: []string{
-			"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",             //nolint:lll
+			"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",         //nolint:lll
-			"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", //nolint:lll
+			"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", //nolint:lll
 		},
 		ExtraLines: []string{
 			"route-metric 1",

internal/publicip/loop.go

@@ -114,6 +114,11 @@ func (l *Loop) run(runCtx context.Context, runDone chan<- struct{},
 			continue
 		}
 
+		if !*l.settings.Enabled {
+			singleRunResult <- nil
+			continue
+		}
+
 		result, err := l.fetcher.FetchInfo(singleRunCtx, netip.Addr{})
 		if err != nil {
 			err = fmt.Errorf("fetching information: %w", err)

internal/server/middlewares/log/middleware.go

@@ -38,7 +38,7 @@ func (m *logMiddleware) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	m.childHandler.ServeHTTP(statefulWriter, r)
 	duration := m.timeNow().Sub(tStart)
 	m.logger.Info(strconv.Itoa(statefulWriter.statusCode) + " " +
-		r.Method + " " + r.RequestURI +
+		r.Method + " " + r.URL.String() +
 		" wrote " + strconv.Itoa(statefulWriter.length) + "B to " +
 		r.RemoteAddr + " in " + duration.String())
 }

internal/storage/mocks_generate_test.go

@@ -1,3 +1,3 @@
 package storage
 
-//go:generate mockgen -destination=mocks_test.go -package $GOPACKAGE . Infoer
+//go:generate mockgen -destination=mocks_test.go -package $GOPACKAGE . Logger

internal/storage/mocks_test.go

@@ -1,5 +1,5 @@
 // Code generated by MockGen. DO NOT EDIT.
-// Source: github.com/qdm12/gluetun/internal/storage (interfaces: Infoer)
+// Source: github.com/qdm12/gluetun/internal/storage (interfaces: Logger)
 
 // Package storage is a generated GoMock package.
 package storage
@@ -10,37 +10,49 @@ import (
 	gomock "github.com/golang/mock/gomock"
 )
 
-// MockInfoer is a mock of Infoer interface.
+// MockLogger is a mock of Logger interface.
-type MockInfoer struct {
+type MockLogger struct {
 	ctrl     *gomock.Controller
-	recorder *MockInfoerMockRecorder
+	recorder *MockLoggerMockRecorder
 }
 
-// MockInfoerMockRecorder is the mock recorder for MockInfoer.
+// MockLoggerMockRecorder is the mock recorder for MockLogger.
-type MockInfoerMockRecorder struct {
+type MockLoggerMockRecorder struct {
-	mock *MockInfoer
+	mock *MockLogger
 }
 
-// NewMockInfoer creates a new mock instance.
+// NewMockLogger creates a new mock instance.
-func NewMockInfoer(ctrl *gomock.Controller) *MockInfoer {
+func NewMockLogger(ctrl *gomock.Controller) *MockLogger {
-	mock := &MockInfoer{ctrl: ctrl}
+	mock := &MockLogger{ctrl: ctrl}
-	mock.recorder = &MockInfoerMockRecorder{mock}
+	mock.recorder = &MockLoggerMockRecorder{mock}
 	return mock
 }
 
 // EXPECT returns an object that allows the caller to indicate expected use.
-func (m *MockInfoer) EXPECT() *MockInfoerMockRecorder {
+func (m *MockLogger) EXPECT() *MockLoggerMockRecorder {
 	return m.recorder
 }
 
 // Info mocks base method.
-func (m *MockInfoer) Info(arg0 string) {
+func (m *MockLogger) Info(arg0 string) {
 	m.ctrl.T.Helper()
 	m.ctrl.Call(m, "Info", arg0)
 }
 
 // Info indicates an expected call of Info.
-func (mr *MockInfoerMockRecorder) Info(arg0 interface{}) *gomock.Call {
+func (mr *MockLoggerMockRecorder) Info(arg0 interface{}) *gomock.Call {
 	mr.mock.ctrl.T.Helper()
-	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Info", reflect.TypeOf((*MockInfoer)(nil).Info), arg0)
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Info", reflect.TypeOf((*MockLogger)(nil).Info), arg0)
+}
+
+// Warn mocks base method.
+func (m *MockLogger) Warn(arg0 string) {
+	m.ctrl.T.Helper()
+	m.ctrl.Call(m, "Warn", arg0)
+}
+
+// Warn indicates an expected call of Warn.
+func (mr *MockLoggerMockRecorder) Warn(arg0 interface{}) *gomock.Call {
+	mr.mock.ctrl.T.Helper()
+	return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Warn", reflect.TypeOf((*MockLogger)(nil).Warn), arg0)
 }

internal/storage/read_test.go

@@ -95,7 +95,7 @@ func Test_extractServersFromBytes(t *testing.T) {
 			t.Parallel()
 			ctrl := gomock.NewController(t)
 
-			logger := NewMockInfoer(ctrl)
+			logger := NewMockLogger(ctrl)
 			var previousLogCall *gomock.Call
 			for _, logged := range testCase.logged {
 				call := logger.EXPECT().Info(logged)

internal/storage/storage.go

@@ -13,18 +13,20 @@ type Storage struct {
 	// the embedded JSON file on every call to the
 	// SyncServers method.
 	hardcodedServers models.AllServers
-	logger           Infoer
+	logger           Logger
 	filepath         string
 }
 
-type Infoer interface {
+type Logger interface {
 	Info(s string)
+	Warn(s string)
 }
 
 // New creates a new storage and reads the servers from the
 // embedded servers file and the file on disk.
-// Passing an empty filepath disables writing servers to a file.
+// Passing an empty filepath disables the reading and writing of
-func New(logger Infoer, filepath string) (storage *Storage, err error) {
+// servers.
+func New(logger Logger, filepath string) (storage *Storage, err error) {
 	// A unit test prevents any error from being returned
 	// and ensures all providers are part of the servers returned.
 	hardcodedServers, _ := parseHardcodedServers()

internal/storage/sync.go

@@ -52,7 +52,7 @@ func (s *Storage) syncServers() (err error) {
 
 	err = s.flushToFile(s.filepath)
 	if err != nil {
-		return fmt.Errorf("writing servers to file: %w", err)
+		s.logger.Warn("failed writing servers to file: " + err.Error())
 	}
 	return nil
 }

internal/updater/providers.go

@@ -29,7 +29,7 @@ func (u *Updater) updateProvider(ctx context.Context, provider Provider,
 			u.logger.Warn("note: if running the update manually, you can use the flag " +
 				"-minratio to allow the update to succeed with less servers found")
 		}
-		return fmt.Errorf("getting servers: %w", err)
+		return fmt.Errorf("getting %s servers: %w", providerName, err)
 	}
 
 	for _, server := range servers {

internal/updater/updater.go

@@ -2,9 +2,11 @@ package updater
 
 import (
 	"context"
+	"errors"
 	"net/http"
 	"time"
 
+	"github.com/qdm12/gluetun/internal/provider/common"
 	"github.com/qdm12/gluetun/internal/updater/unzip"
 	"golang.org/x/text/cases"
 	"golang.org/x/text/language"
@@ -48,22 +50,22 @@ func (u *Updater) UpdateServers(ctx context.Context, providers []string,
 		// TODO support servers offering only TCP or only UDP
 		// for NordVPN and PureVPN
 		err := u.updateProvider(ctx, fetcher, minRatio)
-		if err == nil {
+		switch {
+		case err == nil:
 			continue
-		}
+		case errors.Is(err, common.ErrCredentialsMissing):
-
+			u.logger.Warn(err.Error() + " - skipping update for " + providerName)
-		// return the only error for the single provider.
+			continue
-		if len(providers) == 1 {
+		case len(providers) == 1:
+			// return the only error for the single provider.
 			return err
+		case ctx.Err() != nil:
+			// stop updating other providers if context is done
+			return ctx.Err()
+		default: // error encountered updating one of multiple providers
+			// Log the error and continue updating the next provider.
+			u.logger.Error(err.Error())
 		}
-
-		// stop updating the next providers if context is canceled.
-		if ctxErr := ctx.Err(); ctxErr != nil {
-			return ctxErr
-		}
-
-		// Log the error and continue updating the next provider.
-		u.logger.Error(err.Error())
 	}
 
 	return nil

internal/vpn/interfaces.go

@@ -67,7 +67,6 @@ type NetLinker interface {
 type Router interface {
 	RouteList(family int) (routes []netlink.Route, err error)
 	RouteAdd(route netlink.Route) error
-	RouteReplace(route netlink.Route) error
 }
 
 type Ruler interface {

internal/vpn/run.go

@@ -38,7 +38,7 @@ func (l *Loop) Run(ctx context.Context, done chan<- struct{}) {
 				l.openvpnConf, providerConf, settings, l.ipv6Supported, l.starter, subLogger)
 		} else { // Wireguard
 			vpnInterface = settings.Wireguard.Interface
-			vpnRunner, serverName, canPortForward, err = setupWireguard(ctx, l.netLinker, l.routing, l.fw,
+			vpnRunner, serverName, canPortForward, err = setupWireguard(ctx, l.netLinker, l.fw,
 				providerConf, settings, l.ipv6Supported, subLogger)
 		}
 		if err != nil {

internal/vpn/wireguard.go

@@ -13,7 +13,7 @@ import (
 
 // setupWireguard sets Wireguard up using the configurators and settings given.
 // It returns a serverName for port forwarding (PIA) and an error if it fails.
-func setupWireguard(ctx context.Context, netlinker NetLinker, routing Routing,
+func setupWireguard(ctx context.Context, netlinker NetLinker,
 	fw Firewall, providerConf provider.Provider,
 	settings settings.VPN, ipv6Supported bool, logger wireguard.Logger) (
 	wireguarder *wireguard.Wireguard, serverName string, canPortForward bool, err error,
@@ -29,7 +29,7 @@ func setupWireguard(ctx context.Context, netlinker NetLinker, routing Routing,
 	logger.Debug("Wireguard client private key: " + gosettings.ObfuscateKey(wireguardSettings.PrivateKey))
 	logger.Debug("Wireguard pre-shared key: " + gosettings.ObfuscateKey(wireguardSettings.PreSharedKey))
 
-	wireguarder, err = wireguard.New(wireguardSettings, netlinker, routing, logger)
+	wireguarder, err = wireguard.New(wireguardSettings, netlinker, logger)
 	if err != nil {
 		return nil, "", false, fmt.Errorf("creating Wireguard: %w", err)
 	}

internal/wireguard/constructor.go

@@ -4,11 +4,10 @@ type Wireguard struct {
 	logger   Logger
 	settings Settings
 	netlink  NetLinker
-	routing  Routing
 }
 
 func New(settings Settings, netlink NetLinker,
-	routing Routing, logger Logger,
+	logger Logger,
 ) (w *Wireguard, err error) {
 	settings.SetDefaults()
 	if err := settings.Check(); err != nil {
@@ -19,6 +18,5 @@ func New(settings Settings, netlink NetLinker,
 		logger:   logger,
 		settings: settings,
 		netlink:  netlink,
-		routing:  routing,
 	}, nil
 }

internal/wireguard/interfaces.go

@@ -1,7 +0,0 @@
-package wireguard
-
-import "net/netip"
-
-type Routing interface {
-	VPNLocalGatewayIP(vpnInterface string) (gateway netip.Addr, err error)
-}

internal/wireguard/netlinker.go

@@ -1,8 +1,6 @@
 package wireguard
 
-import (
+import "github.com/qdm12/gluetun/internal/netlink"
-	"github.com/qdm12/gluetun/internal/netlink"
-)
 
 //go:generate mockgen -destination=netlinker_mock_test.go -package wireguard . NetLinker
 
@@ -17,7 +15,6 @@ type NetLinker interface {
 type Router interface {
 	RouteList(family int) (routes []netlink.Route, err error)
 	RouteAdd(route netlink.Route) error
-	RouteReplace(route netlink.Route) error
 }
 
 type Ruler interface {

internal/wireguard/route.go

@@ -1,7 +1,6 @@
 package wireguard
 
 import (
-	"errors"
 	"fmt"
 	"net/netip"
 	"strings"
@@ -30,16 +29,17 @@ func (w *Wireguard) addRoutes(link netlink.Link, destinations []netip.Prefix,
 	return nil
 }
 
-var (
-	ErrDefaultRouteNotFound = errors.New("default route not found")
-)
-
 func (w *Wireguard) addRoute(link netlink.Link, dst netip.Prefix,
 	firewallMark uint32,
 ) (err error) {
+	family := netlink.FamilyV4
+	if dst.Addr().Is6() {
+		family = netlink.FamilyV6
+	}
 	route := netlink.Route{
 		LinkIndex: link.Index,
 		Dst:       dst,
+		Family:    family,
 		Table:     int(firewallMark),
 	}
 
@@ -50,39 +50,5 @@ func (w *Wireguard) addRoute(link netlink.Link, dst netip.Prefix,
 			link.Name, dst, firewallMark, err)
 	}
 
-	vpnGatewayIP, err := w.routing.VPNLocalGatewayIP(link.Name)
-	if err != nil {
-		return fmt.Errorf("getting VPN gateway IP: %w", err)
-	}
-
-	routes, err := w.netlink.RouteList(netlink.FamilyV4)
-	if err != nil {
-		return fmt.Errorf("listing routes: %w", err)
-	}
-
-	var defaultRoute netlink.Route
-	var defaultRouteFound bool
-	for _, route = range routes {
-		if !route.Dst.IsValid() || route.Dst.Addr().IsUnspecified() {
-			defaultRoute = route
-			defaultRouteFound = true
-			break
-		}
-	}
-
-	if !defaultRouteFound {
-		return fmt.Errorf("%w: in %d routes", ErrDefaultRouteNotFound, len(routes))
-	}
-
-	// Equivalent replacement to:
-	// ip route replace default via <vpn-gateway> dev tun0
-	defaultRoute.Gw = vpnGatewayIP
-	defaultRoute.LinkIndex = link.Index
-
-	err = w.netlink.RouteReplace(defaultRoute)
-	if err != nil {
-		return fmt.Errorf("replacing default route: %w", err)
-	}
-
 	return err
 }

internal/wireguard/route_test.go

@@ -37,6 +37,7 @@ func Test_Wireguard_addRoute(t *testing.T) {
 			expectedRoute: netlink.Route{
 				LinkIndex: linkIndex,
 				Dst:       ipPrefix,
+				Family:    netlink.FamilyV4,
 				Table:     firewallMark,
 			},
 		},
@@ -49,6 +50,7 @@ func Test_Wireguard_addRoute(t *testing.T) {
 			expectedRoute: netlink.Route{
 				LinkIndex: linkIndex,
 				Dst:       ipPrefix,
+				Family:    netlink.FamilyV4,
 				Table:     firewallMark,
 			},
 			routeAddErr: errDummy,

internal/wireguard/rule.go

@@ -2,6 +2,7 @@ package wireguard
 
 import (
 	"fmt"
+	"strings"
 
 	"github.com/qdm12/gluetun/internal/netlink"
 )
@@ -16,6 +17,10 @@ func (w *Wireguard) addRule(rulePriority int, firewallMark uint32,
 	rule.Table = int(firewallMark)
 	rule.Family = family
 	if err := w.netlink.RuleAdd(rule); err != nil {
+		if strings.HasSuffix(err.Error(), "file exists") {
+			w.logger.Info("if you are using Kubernetes, this may fix the error below: " +
+				"https://github.com/qdm12/gluetun-wiki/blob/main/setup/advanced/kubernetes.md#adding-ipv6-rule--file-exists")
+		}
 		return nil, fmt.Errorf("adding %s: %w", rule, err)
 	}