在android下运行tun遇到的问题

[dev4u]

本来想试试能不能用tun来替换ss android下的tun2socks，但是没办法编译通过。

cargo {
    module = "src/main/rust/shadowsocks-rust"
    libname = "sslocal"
    targets = listOf("arm64")
    profile = findProperty("CARGO_PROFILE")?.toString() ?: currentFlavor
    extraCargoBuildArguments = listOf("--bin", libname!!)
    featureSpec.noDefaultBut(arrayOf(
        "stream-cipher",
        "aead-cipher-extra",
        "logging",
        "local-flow-stat",
        "local-dns",
        "local-tun",
        "armv8",
        "neon",
        "aead-cipher-2022",
    ))
    exec = { spec, toolchain ->
        spec.environment("RUST_ANDROID_GRADLE_PYTHON_COMMAND", "python3")
        spec.environment("RUST_ANDROID_GRADLE_LINKER_WRAPPER_PY", "$projectDir/$module/../linker-wrapper.py")
        spec.environment("RUST_ANDROID_GRADLE_TARGET", "target/${toolchain.target}/$profile/lib$libname.so")
    }
}

   Compiling tun v0.5.3
error[E0433]: failed to resolve: use of undeclared crate or module `tokio`
  --> /Users/.cargo/registry/src/github.com-1ecc6299db9ec823/tun-0.5.3/src/async/device.rs:21:5
   |
21 | use tokio::io::unix::AsyncFd;
   |     ^^^^^ use of undeclared crate or module `tokio`

error[E0433]: failed to resolve: use of undeclared crate or module `tokio`
  --> /Users/.cargo/registry/src/github.com-1ecc6299db9ec823/tun-0.5.3/src/async/device.rs:22:5
   |
22 | use tokio::io::{AsyncRead, AsyncWrite, ReadBuf};
   |     ^^^^^ use of undeclared crate or module `tokio`

error[E0433]: failed to resolve: use of undeclared crate or module `tokio_util`
  --> /Users/.cargo/registry/src/github.com-1ecc6299db9ec823/tun-0.5.3/src/async/device.rs:23:5
   |
23 | use tokio_util::codec::Framed;
   |     ^^^^^^^^^^ use of undeclared crate or module `tokio_util`

error[E0432]: unresolved import `futures_core`
  --> /Users/.cargo/registry/src/github.com-1ecc6299db9ec823/tun-0.5.3/src/async/device.rs:20:5
   |
20 | use futures_core::ready;
   |     ^^^^^^^^^^^^ use of undeclared crate or module `futures_core`

error[E0432]: unresolved import `byteorder`
  --> /Users/.cargo/registry/src/github.com-1ecc6299db9ec823/tun-0.5.3/src/async/codec.rs:17:5
   |
17 | use byteorder::{NativeEndian, NetworkEndian, WriteBytesExt};
   |     ^^^^^^^^^ use of undeclared crate or module `byteorder`

error[E0433]: failed to resolve: use of undeclared crate or module `tokio_util`
  --> /Users/.cargo/registry/src/github.com-1ecc6299db9ec823/tun-0.5.3/src/async/codec.rs:19:5
   |
19 | use tokio_util::codec::{Decoder, Encoder};
   |     ^^^^^^^^^^ use of undeclared crate or module `tokio_util`

error[E0432]: unresolved import `bytes`
  --> /Users/.cargo/registry/src/github.com-1ecc6299db9ec823/tun-0.5.3/src/async/codec.rs:18:5
   |
18 | use bytes::{BufMut, Bytes, BytesMut};
   |     ^^^^^ use of undeclared crate or module `bytes`

error: cannot determine resolution for the macro `ready`
  --> /Users/.cargo/registry/src/github.com-1ecc6299db9ec823/tun-0.5.3/src/async/device.rs:67:29
   |
cannot determine resolution for the macro `ready`

67 |             let mut guard = ready!(self.inner.poll_read_ready_mut(cx))?;
   |                             ^^^^^
   |
   = note: import resolution is stuck, try simplifying macro imports

error: cannot determine resolution for the macro `ready`
  --> /Users/.cargo/registry/src/github.com-1ecc6299db9ec823/tun-0.5.3/src/async/device.rs:84:29
   |
84 |             let mut guard = ready!(self.inner.poll_write_ready_mut(cx))?;
   |                             ^^^^^
   |
   = note: import resolution is stuck, try simplifying macro imports

error: cannot determine resolution for the macro `ready`
  --> /Users/.cargo/registry/src/github.com-1ecc6299db9ec823/tun-0.5.3/src/async/device.rs:94:29
   |
94 |             let mut guard = ready!(self.inner.poll_write_ready_mut(cx))?;
   |                             ^^^^^
   |
   = note: import resolution is stuck, try simplifying macro imports

error: cannot determine resolution for the macro `ready`
   --> /Users/.cargo/registry/src/github.com-1ecc6299db9ec823/tun-0.5.3/src/async/device.rs:112:29
    |
112 |             let mut guard = ready!(self.inner.poll_write_ready_mut(cx))?;
    |                             ^^^^^
    |
    = note: import resolution is stuck, try simplifying macro imports

error: cannot determine resolution for the macro `ready`
   --> /Users/.cargo/registry/src/github.com-1ecc6299db9ec823/tun-0.5.3/src/async/device.rs:163:29
    |
163 |             let mut guard = ready!(self.inner.poll_read_ready_mut(cx))?;
    |                             ^^^^^
    |
    = note: import resolution is stuck, try simplifying macro imports

error: cannot determine resolution for the macro `ready`
   --> /Users/.cargo/registry/src/github.com-1ecc6299db9ec823/tun-0.5.3/src/async/device.rs:180:29
    |
180 |             let mut guard = ready!(self.inner.poll_write_ready_mut(cx))?;
    |                             ^^^^^
    |
    = note: import resolution is stuck, try simplifying macro imports

error: cannot determine resolution for the macro `ready`
   --> /Users/.cargo/registry/src/github.com-1ecc6299db9ec823/tun-0.5.3/src/async/device.rs:190:29
    |
190 |             let mut guard = ready!(self.inner.poll_write_ready_mut(cx))?;
    |                             ^^^^^
    |
    = note: import resolution is stuck, try simplifying macro imports

[zonyitoo]

https://github.com/meh/rust-tun/blob/b60d4c2ce9aa0b7518fc259c914a0459a5320888/Cargo.toml#L32-L33

It seems that it requires to explicitly enable the async feature. But we have already enabled it in shadowsocks-service:

shadowsocks-rust/crates/shadowsocks-service/Cargo.toml

Line 124 in 0137258

tun = { version = "0.5.3", optional = true, features = ["async"] }

[dev4u]

意思是要等依赖的模块修复才能继续？

[zonyitoo]

y.

[zonyitoo]

The PR was merged. Please try to use the code from master and see if it fixes your issue.

[dev4u]

好，今晚回去试试，谢谢！

[dev4u]

cargo update后，项目还是编译不通过。

[zonyitoo]

You have to modify the Tun dependency to git

[dev4u]

噢，是我漏做这一步，回去再试试。

[dev4u]

我尝试整合到android，启动的时候报错。

2022-06-09 23:37:00.155 6188-6540/com.github.shadowsocks E/libsslocal: thread 'main' panicked at 'create local: Custom { kind: Other, error: InvalidConfig }', src/service/local.rs:781:51

我把在android下启动sslocal的配置打印出来，大概是这样的：

{
  "server": "****",
  "server_port": ****,
  "password": "****",
  "method": "2022-blake3-aes-128-gcm",
  "timeout": 30,
  "mode": "tcp_and_udp",
  "dns": "unix://local_dns_path",
  "locals": [
    {
      "protocol": "tun",
      "tun_device_fd_from_path": "sock_path",
      "tun_interface_name": "eth0", //也试过tun0
      "tun_interface_address": "172.19.0.1/24"
    },
    {
      "local_address": "127.0.0.1",
      "local_port": 5450,
      "local_dns_address": "local_dns_path",
      "remote_dns_address": "****",
      "remote_dns_port": 53,
      "protocol": "dns"
    }
  ]
}

[zonyitoo]

Remove tun_interface_name and tun_interface_address

[dev4u]

Remove tun_interface_name and tun_interface_address

好的，回去再试试。谢谢！

[dev4u]

@zonyitoo 按照你的建议修改配置，还是报InvalidConfig异常

{
  "server": "*******",
  "server_port": 9999,
  "password": "******",
  "method": "2022-blake3-aes-128-gcm",
  "timeout": 30,
  "mode": "tcp_and_udp",
  "dns": "unix://local_dns_path",
  "locals": [
    {
      "local_address": "127.0.0.1",
      "local_port": 1080,
      "local_udp_address": "127.0.0.1",
      "local_udp_port": 1080,
      "mode": "tcp_and_udp"
    },
    {
      "protocol": "tun",
      "tun_device_fd_from_path": "unix://sock_path" //也试过sock_path
    },
    {
      "local_address": "127.0.0.1",
      "local_port": 5450,
      "local_dns_address": "local_dns_path",
      "remote_dns_address": "*****",
      "remote_dns_port": 53,
      "protocol": "dns"
    }
  ]
}

[zonyitoo]

https://github.com/meh/rust-tun/blob/aeca1a64e9ded75ca256d920e45ffdb868a24c6f/src/platform/android/device.rs#L36