Merge pull request #2990 from vitorpamplona/claude/add-i2p-privacy-option-nK2X7

Add I2P support with unified privacy routing
This commit is contained in:
Vitor Pamplona
2026-05-19 16:56:54 -04:00
committed by GitHub
34 changed files with 2132 additions and 176 deletions
@@ -0,0 +1,48 @@
/*
* Copyright (c) 2025 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.commons.i2p
import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
import com.vitorpamplona.quartz.nip01Core.relay.normalizer.isI2p
import com.vitorpamplona.quartz.nip01Core.relay.normalizer.isLocalHost
class I2pRelayEvaluation(
val i2pSettings: I2pRelaySettings,
val trustedRelayList: Set<NormalizedRelayUrl>,
val dmRelayList: Set<NormalizedRelayUrl>,
) {
fun useI2p(relay: NormalizedRelayUrl): Boolean =
if (i2pSettings.i2pType == I2pType.OFF) {
false
} else {
if (relay.isLocalHost()) {
false
} else if (relay.isI2p()) {
i2pSettings.i2pRelaysViaI2p
} else if (relay in dmRelayList) {
i2pSettings.dmRelaysViaI2p
} else if (relay in trustedRelayList) {
i2pSettings.trustedRelaysViaI2p
} else {
i2pSettings.newRelaysViaI2p
}
}
}
@@ -0,0 +1,29 @@
/*
* Copyright (c) 2025 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.commons.i2p
data class I2pRelaySettings(
val i2pType: I2pType = I2pType.OFF,
val i2pRelaysViaI2p: Boolean = true,
val dmRelaysViaI2p: Boolean = false,
val newRelaysViaI2p: Boolean = false,
val trustedRelaysViaI2p: Boolean = false,
)
@@ -0,0 +1,35 @@
/*
* Copyright (c) 2025 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.commons.i2p
sealed class I2pServiceStatus {
data class Active(
val port: Int,
) : I2pServiceStatus()
data object Off : I2pServiceStatus()
data object Connecting : I2pServiceStatus()
data class Error(
val message: String,
) : I2pServiceStatus()
}
@@ -0,0 +1,60 @@
/*
* Copyright (c) 2025 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.commons.i2p
// Shape mirrors TorSettings. Both daemons can be enabled side-by-side (needed so
// .onion and .i2p hidden services stay reachable independently), but only one
// transport carries clearnet at a time — see PrivacySettings.preferredClearnetTransport.
// The per-feature booleans here only take effect when I2P is the preferred clearnet
// transport; otherwise the matching TorSettings flag wins.
data class I2pSettings(
val i2pType: I2pType = I2pType.OFF,
val externalSocksPort: Int = 4447,
val i2pRelaysViaI2p: Boolean = true,
val dmRelaysViaI2p: Boolean = false,
val newRelaysViaI2p: Boolean = false,
val trustedRelaysViaI2p: Boolean = false,
val urlPreviewsViaI2p: Boolean = false,
val profilePicsViaI2p: Boolean = false,
val imagesViaI2p: Boolean = false,
val videosViaI2p: Boolean = false,
val moneyOperationsViaI2p: Boolean = false,
val nip05VerificationsViaI2p: Boolean = false,
val mediaUploadsViaI2p: Boolean = false,
)
// EXTERNAL-only: this app does not embed an I2P router. Bootstrap on Android is
// minutes-long for a fresh netDb and the protocol provides no shortcut analogous
// to Tor's hardcoded directory authorities; we'd ship a "permanently warming up"
// experience. Users who want I2P run i2pd or Java I2P independently and point
// Amethyst at its SOCKS port (default 4447). See I2pManager.
enum class I2pType(
val screenCode: Int,
) {
OFF(0),
EXTERNAL(2),
}
fun parseI2pType(code: Int?): I2pType =
when (code) {
I2pType.EXTERNAL.screenCode -> I2pType.EXTERNAL
else -> I2pType.OFF
}
@@ -0,0 +1,36 @@
/*
* Copyright (c) 2025 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.commons.i2p
import kotlinx.coroutines.flow.StateFlow
// Platform-agnostic interface for the I2P daemon lifecycle.
// Android internal mode bundles net.i2p:router; external mode just opens a SOCKS
// proxy to a user-run daemon. activePortOrNull surfaces whichever local SOCKS
// port the HTTP manager should route I2P traffic through.
interface II2pManager {
val status: StateFlow<I2pServiceStatus>
val activePortOrNull: StateFlow<Int?>
suspend fun dormant()
suspend fun active()
}
@@ -0,0 +1,27 @@
/*
* Copyright (c) 2025 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.commons.i2p
interface II2pSettingsPersistence {
fun load(): I2pSettings
fun save(settings: I2pSettings)
}
@@ -0,0 +1,35 @@
/*
* Copyright (c) 2025 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.commons.privacy
// What the network call is for. PrivacyRouter uses this to look up the matching
// per-feature toggle on whichever transport is preferred for clearnet
// (TorSettings.imagesViaTor vs I2pSettings.imagesViaI2p, etc.). Hidden-service
// hostnames ignore the role and hard-pin to their matching network.
enum class FeatureRole {
IMAGE,
VIDEO,
URL_PREVIEW,
PROFILE_PIC,
NIP05,
MONEY,
UPLOAD,
}
@@ -0,0 +1,46 @@
/*
* Copyright (c) 2025 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.commons.privacy
import com.vitorpamplona.amethyst.commons.i2p.I2pRelayEvaluation
import com.vitorpamplona.amethyst.commons.tor.TorRelayEvaluation
import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
import com.vitorpamplona.quartz.nip01Core.relay.normalizer.isI2p
import com.vitorpamplona.quartz.nip01Core.relay.normalizer.isOnion
// Per-relay transport pick. Onion always wins for Tor, I2P always wins for I2P
// (matching PrivacyRouter's hostname pin). For non-hidden hosts, prefer I2P if
// both transports want the relay — arbitrary tiebreak documented here so the
// behavior is testable.
class PrivacyRelayEvaluation(
private val tor: TorRelayEvaluation,
private val i2p: I2pRelayEvaluation,
) {
fun transport(relay: NormalizedRelayUrl): PrivacyTransport {
if (relay.isOnion()) return if (tor.useTor(relay)) PrivacyTransport.TOR else PrivacyTransport.DIRECT
if (relay.isI2p()) return if (i2p.useI2p(relay)) PrivacyTransport.I2P else PrivacyTransport.DIRECT
return when {
i2p.useI2p(relay) -> PrivacyTransport.I2P
tor.useTor(relay) -> PrivacyTransport.TOR
else -> PrivacyTransport.DIRECT
}
}
}
@@ -0,0 +1,43 @@
/*
* Copyright (c) 2025 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.commons.privacy
// Outcome of PrivacyRouter.route. Either an actionable transport, or Blocked
// when a hidden-service hostname cannot be reached (matching daemon is OFF)
// and we fail closed rather than leak the request over the clearnet.
sealed interface PrivacyRoute {
data object Direct : PrivacyRoute
data object Tor : PrivacyRoute
data object I2p : PrivacyRoute
// Hidden-service request whose matching daemon is disabled. Callers must
// surface this as a visible failure — don't fall back to DIRECT.
data class Blocked(
val reason: BlockReason,
) : PrivacyRoute
}
enum class BlockReason {
ONION_REQUIRES_TOR,
I2P_REQUIRES_I2P,
}
@@ -0,0 +1,93 @@
/*
* Copyright (c) 2025 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.commons.privacy
import com.vitorpamplona.amethyst.commons.i2p.I2pSettings
import com.vitorpamplona.amethyst.commons.tor.TorSettings
import com.vitorpamplona.quartz.nip01Core.relay.normalizer.HiddenServiceKind
import com.vitorpamplona.quartz.nip01Core.relay.normalizer.RelayUrlNormalizer
// Decides how a request is routed.
//
// Hidden-service hostnames hard-pin to their matching network — .onion needs
// Tor, .i2p needs I2P — and fail closed (Blocked) when that daemon is OFF
// rather than leak the request over the clearnet.
//
// For clearnet hostnames there is exactly one active privacy transport at a
// time (PrivacySettings.preferredClearnetTransport). Per-feature toggles on
// that transport's own settings (TorSettings.*ViaTor or I2pSettings.*ViaI2p)
// decide whether this particular request is routed through it; otherwise the
// request goes Direct.
object PrivacyRouter {
fun route(
url: String,
role: FeatureRole,
settings: PrivacySettings,
): PrivacyRoute =
when (RelayUrlNormalizer.classifyHidden(url)) {
HiddenServiceKind.LOCALHOST -> PrivacyRoute.Direct
HiddenServiceKind.ONION ->
if (settings.torAvailable) PrivacyRoute.Tor else PrivacyRoute.Blocked(BlockReason.ONION_REQUIRES_TOR)
HiddenServiceKind.I2P ->
if (settings.i2pAvailable) PrivacyRoute.I2p else PrivacyRoute.Blocked(BlockReason.I2P_REQUIRES_I2P)
HiddenServiceKind.CLEARNET -> clearnet(role, settings)
}
private fun clearnet(
role: FeatureRole,
settings: PrivacySettings,
): PrivacyRoute =
when (settings.preferredClearnetTransport) {
PrivacyTransport.TOR ->
if (settings.torAvailable && torEnables(role, settings.tor)) PrivacyRoute.Tor else PrivacyRoute.Direct
PrivacyTransport.I2P ->
if (settings.i2pAvailable && i2pEnables(role, settings.i2p)) PrivacyRoute.I2p else PrivacyRoute.Direct
PrivacyTransport.DIRECT -> PrivacyRoute.Direct
}
private fun torEnables(
role: FeatureRole,
tor: TorSettings,
): Boolean =
when (role) {
FeatureRole.IMAGE -> tor.imagesViaTor
FeatureRole.VIDEO -> tor.videosViaTor
FeatureRole.URL_PREVIEW -> tor.urlPreviewsViaTor
FeatureRole.PROFILE_PIC -> tor.profilePicsViaTor
FeatureRole.NIP05 -> tor.nip05VerificationsViaTor
FeatureRole.MONEY -> tor.moneyOperationsViaTor
FeatureRole.UPLOAD -> tor.mediaUploadsViaTor
}
private fun i2pEnables(
role: FeatureRole,
i2p: I2pSettings,
): Boolean =
when (role) {
FeatureRole.IMAGE -> i2p.imagesViaI2p
FeatureRole.VIDEO -> i2p.videosViaI2p
FeatureRole.URL_PREVIEW -> i2p.urlPreviewsViaI2p
FeatureRole.PROFILE_PIC -> i2p.profilePicsViaI2p
FeatureRole.NIP05 -> i2p.nip05VerificationsViaI2p
FeatureRole.MONEY -> i2p.moneyOperationsViaI2p
FeatureRole.UPLOAD -> i2p.mediaUploadsViaI2p
}
}
@@ -0,0 +1,40 @@
/*
* Copyright (c) 2025 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.commons.privacy
import com.vitorpamplona.amethyst.commons.i2p.I2pSettings
import com.vitorpamplona.amethyst.commons.i2p.I2pType
import com.vitorpamplona.amethyst.commons.tor.TorSettings
import com.vitorpamplona.amethyst.commons.tor.TorType
// Aggregate of all privacy configuration. Both Tor and I2P daemons can run
// side-by-side so hidden services on each network stay reachable, but only one
// transport carries clearnet at a time: preferredClearnetTransport picks it.
// The per-feature booleans on each TorSettings / I2pSettings only take effect
// for the preferred transport.
data class PrivacySettings(
val tor: TorSettings = TorSettings(),
val i2p: I2pSettings = I2pSettings(),
val preferredClearnetTransport: PrivacyTransport = PrivacyTransport.DIRECT,
) {
val torAvailable: Boolean get() = tor.torType != TorType.OFF
val i2pAvailable: Boolean get() = i2p.i2pType != I2pType.OFF
}
@@ -0,0 +1,27 @@
/*
* Copyright (c) 2025 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.commons.privacy
enum class PrivacyTransport {
DIRECT,
TOR,
I2P,
}
@@ -0,0 +1,190 @@
/*
* Copyright (c) 2025 Vitor Pamplona
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
* Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.vitorpamplona.amethyst.commons.privacy
import com.vitorpamplona.amethyst.commons.i2p.I2pSettings
import com.vitorpamplona.amethyst.commons.i2p.I2pType
import com.vitorpamplona.amethyst.commons.tor.TorSettings
import com.vitorpamplona.amethyst.commons.tor.TorType
import kotlin.test.Test
import kotlin.test.assertEquals
class PrivacyRouterTest {
private val clearnet = "wss://relay.damus.io/"
private val onion = "wss://abc123.onion/"
private val i2p = "wss://abc.i2p/"
private val localhost = "ws://127.0.0.1:8080/"
private fun settings(
torOn: Boolean = false,
i2pOn: Boolean = false,
preferred: PrivacyTransport = PrivacyTransport.DIRECT,
tor: TorSettings = TorSettings(torType = if (torOn) TorType.INTERNAL else TorType.OFF),
i2p: I2pSettings = I2pSettings(i2pType = if (i2pOn) I2pType.EXTERNAL else I2pType.OFF),
) = PrivacySettings(
tor = tor,
i2p = i2p,
preferredClearnetTransport = preferred,
)
@Test
fun localhost_alwaysDirect() {
assertEquals(
PrivacyRoute.Direct,
PrivacyRouter.route(localhost, FeatureRole.IMAGE, settings(torOn = true, i2pOn = true, preferred = PrivacyTransport.TOR)),
)
}
@Test
fun onion_pinsToTor_whenAvailable() {
assertEquals(PrivacyRoute.Tor, PrivacyRouter.route(onion, FeatureRole.IMAGE, settings(torOn = true)))
}
@Test
fun onion_blocksWhenTorOff() {
assertEquals(
PrivacyRoute.Blocked(BlockReason.ONION_REQUIRES_TOR),
PrivacyRouter.route(onion, FeatureRole.IMAGE, settings(torOn = false, i2pOn = true, preferred = PrivacyTransport.I2P)),
)
}
@Test
fun i2p_pinsToI2p_whenAvailable() {
assertEquals(PrivacyRoute.I2p, PrivacyRouter.route(i2p, FeatureRole.IMAGE, settings(i2pOn = true)))
}
@Test
fun i2p_blocksWhenI2pOff() {
assertEquals(
PrivacyRoute.Blocked(BlockReason.I2P_REQUIRES_I2P),
PrivacyRouter.route(i2p, FeatureRole.IMAGE, settings(torOn = true, i2pOn = false, preferred = PrivacyTransport.TOR)),
)
}
@Test
fun b32_i2p_address_pinsToI2p() {
val b32 = "wss://abcdefghijklmnopqrstuvwxyz234567.b32.i2p/"
assertEquals(PrivacyRoute.I2p, PrivacyRouter.route(b32, FeatureRole.IMAGE, settings(i2pOn = true)))
}
@Test
fun clearnet_directWhenNoPreferred() {
assertEquals(
PrivacyRoute.Direct,
PrivacyRouter.route(
clearnet,
FeatureRole.IMAGE,
settings(torOn = true, i2pOn = true, preferred = PrivacyTransport.DIRECT, tor = TorSettings(torType = TorType.INTERNAL, imagesViaTor = true)),
),
)
}
@Test
fun clearnet_torRoutes_whenPreferredAndFeatureOn() {
val s =
settings(
torOn = true,
preferred = PrivacyTransport.TOR,
tor = TorSettings(torType = TorType.INTERNAL, imagesViaTor = true),
)
assertEquals(PrivacyRoute.Tor, PrivacyRouter.route(clearnet, FeatureRole.IMAGE, s))
}
@Test
fun clearnet_torDirect_whenPreferredButFeatureOff() {
val s =
settings(
torOn = true,
preferred = PrivacyTransport.TOR,
tor = TorSettings(torType = TorType.INTERNAL, imagesViaTor = false),
)
assertEquals(PrivacyRoute.Direct, PrivacyRouter.route(clearnet, FeatureRole.IMAGE, s))
}
@Test
fun clearnet_i2pRoutes_whenPreferredAndFeatureOn() {
val s =
settings(
i2pOn = true,
preferred = PrivacyTransport.I2P,
i2p = I2pSettings(i2pType = I2pType.EXTERNAL, videosViaI2p = true),
)
assertEquals(PrivacyRoute.I2p, PrivacyRouter.route(clearnet, FeatureRole.VIDEO, s))
}
@Test
fun clearnet_i2pDirect_whenPreferredButFeatureOff() {
val s =
settings(
i2pOn = true,
preferred = PrivacyTransport.I2P,
i2p = I2pSettings(i2pType = I2pType.EXTERNAL, videosViaI2p = false),
)
assertEquals(PrivacyRoute.Direct, PrivacyRouter.route(clearnet, FeatureRole.VIDEO, s))
}
@Test
fun clearnet_preferredButDaemonOff_isDirect() {
// User picked TOR but the daemon is off — go Direct instead of erroring.
val s =
settings(
torOn = false,
preferred = PrivacyTransport.TOR,
tor = TorSettings(torType = TorType.OFF, imagesViaTor = true),
)
assertEquals(PrivacyRoute.Direct, PrivacyRouter.route(clearnet, FeatureRole.IMAGE, s))
}
@Test
fun clearnet_i2pTogglesIgnored_whenTorIsPreferred() {
// I2P is the only daemon running but TOR is the preferred clearnet transport,
// so I2P toggles must not take effect — fall through to Direct.
val s =
settings(
torOn = false,
i2pOn = true,
preferred = PrivacyTransport.TOR,
i2p = I2pSettings(i2pType = I2pType.EXTERNAL, imagesViaI2p = true),
)
assertEquals(PrivacyRoute.Direct, PrivacyRouter.route(clearnet, FeatureRole.IMAGE, s))
}
@Test
fun bothDaemonsRunning_clearnetUsesOnlyPreferred() {
// Both daemons up, both have images toggled on, preferred is I2P → I2P wins.
val s =
settings(
torOn = true,
i2pOn = true,
preferred = PrivacyTransport.I2P,
tor = TorSettings(torType = TorType.INTERNAL, imagesViaTor = true),
i2p = I2pSettings(i2pType = I2pType.EXTERNAL, imagesViaI2p = true),
)
assertEquals(PrivacyRoute.I2p, PrivacyRouter.route(clearnet, FeatureRole.IMAGE, s))
}
@Test
fun hiddenServiceIgnoresClearnetPreference() {
// .onion still pins to Tor even when I2P is the preferred clearnet transport.
val s = settings(torOn = true, i2pOn = true, preferred = PrivacyTransport.I2P)
assertEquals(PrivacyRoute.Tor, PrivacyRouter.route(onion, FeatureRole.IMAGE, s))
}
}