implement minimal NIF to create and read from a TUN device
This commit is contained in:
parent
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commit
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SSH key fingerprint:
SHA256:y9T5GFw2A20WVklhetIxG1+kcg/Ce0shnQmbu1LQ37g
12 changed files with 963 additions and 1 deletions
4
.gitignore
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.gitignore
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@ -23,3 +23,7 @@ p2p_chat-*.tar
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# Temporary files, for example, from tests.
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/tmp/
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# Rust binary artifacts
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/target/
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priv/native/**/*.so
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808
Cargo.lock
generated
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Cargo.lock
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@ -0,0 +1,808 @@
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|
||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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||||
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|
||||
"flume",
|
||||
"libc",
|
||||
"netlink-packet-core",
|
||||
"netlink-packet-route 0.28.0",
|
||||
"netlink-sys",
|
||||
"windows-sys",
|
||||
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|
||||
|
||||
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|
||||
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||||
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||||
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||||
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|
||||
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|
||||
"inventory",
|
||||
"libloading",
|
||||
"regex-lite",
|
||||
"rustler_codegen",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
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||||
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|
||||
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|
||||
"heck",
|
||||
"inventory",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "rustversion"
|
||||
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|
||||
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||||
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||||
|
||||
[[package]]
|
||||
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||||
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|
||||
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|
||||
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|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
||||
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|
||||
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|
||||
dependencies = [
|
||||
"lock_api",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
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|
||||
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||||
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||||
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||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"unicode-ident",
|
||||
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|
||||
|
||||
[[package]]
|
||||
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|
||||
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|
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||||
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|
||||
"core-foundation-sys",
|
||||
"libc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "thiserror"
|
||||
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|
||||
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||||
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|
||||
"thiserror-impl",
|
||||
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|
||||
|
||||
[[package]]
|
||||
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||||
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|
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||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "tun-rs"
|
||||
version = "2.8.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d81d4007ae1904e2e00028dc0215f0d2ca5af18acdf8664fb75ae6c9a20b98c7"
|
||||
dependencies = [
|
||||
"blocking",
|
||||
"byteorder",
|
||||
"bytes",
|
||||
"c2rust-bitfields",
|
||||
"encoding_rs",
|
||||
"getifaddrs",
|
||||
"ipnet",
|
||||
"libc",
|
||||
"libloading",
|
||||
"log",
|
||||
"netconfig-rs",
|
||||
"nix 0.31.3",
|
||||
"route_manager",
|
||||
"scopeguard",
|
||||
"widestring",
|
||||
"windows-sys",
|
||||
"winreg",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "unicode-ident"
|
||||
version = "1.0.22"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9312f7c4f6ff9069b165498234ce8be658059c6728633667c526e27dc2cf1df5"
|
||||
|
||||
[[package]]
|
||||
name = "wasip2"
|
||||
version = "1.0.3+wasi-0.2.9"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "20064672db26d7cdc89c7798c48a0fdfac8213434a1186e5ef29fd560ae223d6"
|
||||
dependencies = [
|
||||
"wit-bindgen",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wasm-bindgen"
|
||||
version = "0.2.121"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "49ace1d07c165b0864824eee619580c4689389afa9dc9ed3a4c75040d82e6790"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
"once_cell",
|
||||
"rustversion",
|
||||
"wasm-bindgen-macro",
|
||||
"wasm-bindgen-shared",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wasm-bindgen-macro"
|
||||
version = "0.2.121"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8e68e6f4afd367a562002c05637acb8578ff2dea1943df76afb9e83d177c8578"
|
||||
dependencies = [
|
||||
"quote",
|
||||
"wasm-bindgen-macro-support",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wasm-bindgen-macro-support"
|
||||
version = "0.2.121"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d95a9ec35c64b2a7cb35d3fead40c4238d0940c86d107136999567a4703259f2"
|
||||
dependencies = [
|
||||
"bumpalo",
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
"wasm-bindgen-shared",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wasm-bindgen-shared"
|
||||
version = "0.2.121"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c4e0100b01e9f0d03189a92b96772a1fb998639d981193d7dbab487302513441"
|
||||
dependencies = [
|
||||
"unicode-ident",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "widestring"
|
||||
version = "1.2.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "72069c3113ab32ab29e5584db3c6ec55d416895e60715417b5b883a357c3e471"
|
||||
|
||||
[[package]]
|
||||
name = "windows"
|
||||
version = "0.61.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9babd3a767a4c1aef6900409f85f5d53ce2544ccdfaa86dad48c91782c6d6893"
|
||||
dependencies = [
|
||||
"windows-collections",
|
||||
"windows-core",
|
||||
"windows-future",
|
||||
"windows-link 0.1.3",
|
||||
"windows-numerics",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-collections"
|
||||
version = "0.2.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3beeceb5e5cfd9eb1d76b381630e82c4241ccd0d27f1a39ed41b2760b255c5e8"
|
||||
dependencies = [
|
||||
"windows-core",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-core"
|
||||
version = "0.61.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c0fdd3ddb90610c7638aa2b3a3ab2904fb9e5cdbecc643ddb3647212781c4ae3"
|
||||
dependencies = [
|
||||
"windows-implement",
|
||||
"windows-interface",
|
||||
"windows-link 0.1.3",
|
||||
"windows-result",
|
||||
"windows-strings",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-future"
|
||||
version = "0.2.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "fc6a41e98427b19fe4b73c550f060b59fa592d7d686537eebf9385621bfbad8e"
|
||||
dependencies = [
|
||||
"windows-core",
|
||||
"windows-link 0.1.3",
|
||||
"windows-threading",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-implement"
|
||||
version = "0.60.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "053e2e040ab57b9dc951b72c264860db7eb3b0200ba345b4e4c3b14f67855ddf"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-interface"
|
||||
version = "0.59.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "3f316c4a2570ba26bbec722032c4099d8c8bc095efccdc15688708623367e358"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-link"
|
||||
version = "0.1.3"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5e6ad25900d524eaabdbbb96d20b4311e1e7ae1699af4fb28c17ae66c80d798a"
|
||||
|
||||
[[package]]
|
||||
name = "windows-link"
|
||||
version = "0.2.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
|
||||
|
||||
[[package]]
|
||||
name = "windows-numerics"
|
||||
version = "0.2.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9150af68066c4c5c07ddc0ce30421554771e528bde427614c61038bc2c92c2b1"
|
||||
dependencies = [
|
||||
"windows-core",
|
||||
"windows-link 0.1.3",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-result"
|
||||
version = "0.3.4"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "56f42bd332cc6c8eac5af113fc0c1fd6a8fd2aa08a0119358686e5160d0586c6"
|
||||
dependencies = [
|
||||
"windows-link 0.1.3",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-strings"
|
||||
version = "0.4.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "56e6c93f3a0c3b36176cb1327a4958a0353d5d166c2a35cb268ace15e91d3b57"
|
||||
dependencies = [
|
||||
"windows-link 0.1.3",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-sys"
|
||||
version = "0.61.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ae137229bcbd6cdf0f7b80a31df61766145077ddf49416a728b02cb3921ff3fc"
|
||||
dependencies = [
|
||||
"windows-link 0.2.1",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows-threading"
|
||||
version = "0.1.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "b66463ad2e0ea3bbf808b7f1d371311c80e115c0b71d60efc142cafbcfb057a6"
|
||||
dependencies = [
|
||||
"windows-link 0.1.3",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "winreg"
|
||||
version = "0.56.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "7d6f32a0ff4a9f6f01231eb2059cc85479330739333e0e58cadf03b6af2cca10"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
"windows-sys",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "wit-bindgen"
|
||||
version = "0.57.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "1ebf944e87a7c253233ad6766e082e3cd714b5d03812acc24c318f549614536e"
|
||||
4
Cargo.toml
Normal file
4
Cargo.toml
Normal file
|
|
@ -0,0 +1,4 @@
|
|||
[workspace]
|
||||
resolver = "2"
|
||||
|
||||
members = ["native/p2pchat_transport_tuntapport"]
|
||||
|
|
@ -19,9 +19,16 @@
|
|||
{
|
||||
devShells.default = pkgs.mkShell {
|
||||
ERL_AFLAGS = "-kernel shell_history enabled";
|
||||
LIBCLANG_PATH = "${pkgs.llvmPackages.libclang.lib}/lib";
|
||||
buildInputs = with pkgs; [
|
||||
llvmPackages.clang
|
||||
];
|
||||
packages = with pkgs; [
|
||||
elixir
|
||||
elixir-ls
|
||||
cargo
|
||||
rust-analyzer
|
||||
rustc
|
||||
];
|
||||
};
|
||||
}
|
||||
|
|
|
|||
33
lib/p2p_chat/transport/tuntap.ex
Normal file
33
lib/p2p_chat/transport/tuntap.ex
Normal file
|
|
@ -0,0 +1,33 @@
|
|||
defmodule P2pChat.Transport.TunTap do
|
||||
use GenServer
|
||||
|
||||
defstruct [:tun_fd]
|
||||
|
||||
@impl true
|
||||
def init(args) do
|
||||
{:ok, io_device} = setup_tap_device()
|
||||
{:ok, {}}
|
||||
end
|
||||
|
||||
@impl true
|
||||
def terminate(_reason, state) do
|
||||
|
||||
end
|
||||
|
||||
def setup_tap_device(name \\ "tunP2P") do
|
||||
{:ok, io_device} = :file.open(~c"/dev/net/tun", [:read, :write, :raw])
|
||||
:ok = :file.close(io_device)
|
||||
:ok
|
||||
end
|
||||
|
||||
def teardown_tap_device(io_device) do
|
||||
end
|
||||
|
||||
#
|
||||
# Client API
|
||||
#
|
||||
|
||||
def start_link(args) do
|
||||
GenServer.start_link(__MODULE__, args)
|
||||
end
|
||||
end
|
||||
8
lib/p2p_chat/transport/tuntapport.ex
Normal file
8
lib/p2p_chat/transport/tuntapport.ex
Normal file
|
|
@ -0,0 +1,8 @@
|
|||
defmodule P2pChat.Transport.TunTapPort do
|
||||
use Rustler, otp_app: :p2p_chat, crate: "p2pchat_transport_tuntapport"
|
||||
|
||||
def make_tun_device(), do: :erlang.nif_error(:nif_not_loaded)
|
||||
|
||||
def read(_handle, _length \\ 2**16), do: :erlang.nif_error(:nif_not_loaded)
|
||||
end
|
||||
|
||||
3
mix.exs
3
mix.exs
|
|
@ -21,7 +21,8 @@ defmodule P2pChat.MixProject do
|
|||
# Run "mix help deps" to learn about dependencies.
|
||||
defp deps do
|
||||
[
|
||||
{ :uuid, "~> 1.1" }
|
||||
{ :uuid, "~> 1.1" },
|
||||
{ :rustler, "~> 0.37.3", runtime: false },
|
||||
# {:quicer, git: "https://github.com/emqx/quic.git", tag: "0.2.4"},
|
||||
# {:dep_from_hexpm, "~> 0.3.0"},
|
||||
]
|
||||
|
|
|
|||
2
mix.lock
2
mix.lock
|
|
@ -1,5 +1,7 @@
|
|||
%{
|
||||
"jason": {:hex, :jason, "1.4.5", "2e3a008590b0b8d7388c20293e9dcc9cf3e5d642fd2a114e4cbbb52e595d940a", [:mix], [{:decimal, "~> 1.0 or ~> 2.0 or ~> 3.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "b0c823996102bcd0239b3c2444eb00409b72f6a140c1950bc8b457d836b30684"},
|
||||
"quicer": {:git, "https://github.com/emqx/quic.git", "fc5946302e01148ce4dbd3aebe16ec3446caf31c", [tag: "0.2.4"]},
|
||||
"rustler": {:hex, :rustler, "0.37.3", "5f4e6634d43b26f0a69834dd1d3ed4e1710b022a053bf4a670220c9540c92602", [:mix], [{:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "a6872c6f53dcf00486d1e7f9e046e20e01bf1654bdacc4193016c2e8002b32a2"},
|
||||
"snabbkaffe": {:git, "https://github.com/kafka4beam/snabbkaffe.git", "b59298334ed349556f63405d1353184c63c66534", [tag: "1.0.10"]},
|
||||
"uuid": {:hex, :uuid, "1.1.8", "e22fc04499de0de3ed1116b770c7737779f226ceefa0badb3592e64d5cfb4eb9", [:mix], [], "hexpm", "c790593b4c3b601f5dc2378baae7efaf5b3d73c4c6456ba85759905be792f2ac"},
|
||||
}
|
||||
|
|
|
|||
13
native/p2pchat_transport_tuntapport/Cargo.toml
Normal file
13
native/p2pchat_transport_tuntapport/Cargo.toml
Normal file
|
|
@ -0,0 +1,13 @@
|
|||
[package]
|
||||
name = "p2pchat_transport_tuntapport"
|
||||
version = "0.1.0"
|
||||
authors = []
|
||||
edition = "2021"
|
||||
|
||||
[lib]
|
||||
crate-type = ["cdylib"]
|
||||
|
||||
[dependencies]
|
||||
rustler = "0.37.4"
|
||||
tun-rs = { version = "2.8.3", default-features = false, features = ["blocking", "experimental"] }
|
||||
|
||||
20
native/p2pchat_transport_tuntapport/README.md
Normal file
20
native/p2pchat_transport_tuntapport/README.md
Normal file
|
|
@ -0,0 +1,20 @@
|
|||
# NIF for P2pChat.Transport.TunTapPort
|
||||
|
||||
## To build the NIF module:
|
||||
|
||||
- Your NIF will now build along with your project.
|
||||
|
||||
## To load the NIF:
|
||||
|
||||
```elixir
|
||||
defmodule P2pChat.Transport.TunTapPort do
|
||||
use Rustler, otp_app: :p2p_chat, crate: "p2pchat_transport_tuntapport"
|
||||
|
||||
# When your NIF is loaded, it will override this function.
|
||||
def add(_a, _b), do: :erlang.nif_error(:nif_not_loaded)
|
||||
end
|
||||
```
|
||||
|
||||
## Examples
|
||||
|
||||
[This](https://github.com/rusterlium/NifIo) is a complete example of a NIF written in Rust.
|
||||
62
native/p2pchat_transport_tuntapport/src/lib.rs
Normal file
62
native/p2pchat_transport_tuntapport/src/lib.rs
Normal file
|
|
@ -0,0 +1,62 @@
|
|||
use std::io;
|
||||
use std::net::Ipv6Addr;
|
||||
|
||||
use rustler::Binary;
|
||||
use rustler::NifResult;
|
||||
use rustler::OwnedBinary;
|
||||
use rustler::Resource;
|
||||
use rustler::ResourceArc;
|
||||
use rustler::Error;
|
||||
use tun_rs::DeviceBuilder;
|
||||
use tun_rs::SyncDevice;
|
||||
|
||||
|
||||
mod atoms {
|
||||
rustler::atoms! {
|
||||
ok,
|
||||
would_block,
|
||||
other_error,
|
||||
}
|
||||
}
|
||||
|
||||
pub struct TunHandle {
|
||||
device: SyncDevice,
|
||||
}
|
||||
|
||||
#[rustler::resource_impl]
|
||||
impl Resource for TunHandle {}
|
||||
|
||||
#[rustler::nif]
|
||||
fn make_tun_device() -> NifResult<ResourceArc<TunHandle>> {
|
||||
let device = DeviceBuilder::new()
|
||||
.name("tunP2P")
|
||||
.ipv6(Ipv6Addr::new(0x2001, 0x2f, 0, 0, 0, 0, 0, 1), 28)
|
||||
.build_sync()
|
||||
.expect("Could not create tun device");
|
||||
device.set_nonblocking(true).expect("Could not make TUN device nonblocking");
|
||||
|
||||
println!("TUN device {} created", device.name().unwrap());
|
||||
|
||||
let handle = ResourceArc::new(TunHandle { device });
|
||||
Ok(handle)
|
||||
}
|
||||
|
||||
#[rustler::nif]
|
||||
fn read(env: rustler::Env, handle: ResourceArc<TunHandle>, length: usize) -> NifResult<Binary> {
|
||||
let mut buf = OwnedBinary::new(length).expect("Could not allocate a buffer from the BEAM");
|
||||
|
||||
let n = match handle.device.recv(&mut buf) {
|
||||
Ok(n) => n,
|
||||
Err(e) => return match e.kind() {
|
||||
io::ErrorKind::WouldBlock => Err(Error::Term(Box::new(atoms::would_block()))),
|
||||
_ => Err(Error::Term(Box::new(atoms::other_error()))),
|
||||
},
|
||||
};
|
||||
println!("Have read {n} bytes");
|
||||
|
||||
let erl_buf = Binary::from_owned(buf, env);
|
||||
Ok(erl_buf)
|
||||
}
|
||||
|
||||
|
||||
rustler::init!("Elixir.P2pChat.Transport.TunTapPort");
|
||||
BIN
priv/native/p2pchat_transport_tuntapport.so
Executable file
BIN
priv/native/p2pchat_transport_tuntapport.so
Executable file
Binary file not shown.
Loading…
Add table
Add a link
Reference in a new issue