implement minimal NIF to create and read from a TUN device
This commit is contained in:
parent
72a4f2ff8f
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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# Temporary files, for example, from tests.
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/tmp/
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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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808
Cargo.lock
generated
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@ -0,0 +1,808 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 4
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[[package]]
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name = "async-channel"
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version = "2.5.0"
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checksum = "924ed96dd52d1b75e9c1a3e6275715fd320f5f9439fb5a4a11fa51f4221158d2"
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dependencies = [
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"concurrent-queue",
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"event-listener-strategy",
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"futures-core",
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"pin-project-lite",
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]
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[[package]]
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[[package]]
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[[package]]
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name = "bitflags"
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checksum = "c4512299f36f043ab09a583e57bceb5a5aab7a73db1805848e8fef3c9e8c78b3"
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checksum = "e83f8d02be6967315521be875afa792a316e28d57b5a2d401897e2a7921b7f21"
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dependencies = [
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"async-channel",
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"async-task",
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"futures-io",
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"futures-lite",
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"piper",
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]
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[[package]]
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name = "bumpalo"
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[[package]]
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name = "byteorder"
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[[package]]
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name = "bytes"
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version = "1.11.1"
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[[package]]
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name = "c2rust-bitfields"
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version = "0.22.1"
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checksum = "e91b9a85391b09c224053f3c45344f0639822e641f9d2b4f351bb3152600742d"
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dependencies = [
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"c2rust-bitfields-derive",
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]
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[[package]]
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name = "c2rust-bitfields-derive"
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version = "0.22.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "153187c06ed005d5cb75ed9f0a2f274836f54f6b2efdc1f45136e728764875f9"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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"unicode-ident",
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]
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[[package]]
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name = "cfg-if"
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version = "1.0.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "cfg_aliases"
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version = "0.2.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
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[[package]]
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name = "concurrent-queue"
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version = "2.5.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "4ca0197aee26d1ae37445ee532fefce43251d24cc7c166799f4d46817f1d3973"
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dependencies = [
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"crossbeam-utils",
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]
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[[package]]
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name = "core-foundation"
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version = "0.10.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b2a6cd9ae233e7f62ba4e9353e81a88df7fc8a5987b8d445b4d90c879bd156f6"
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dependencies = [
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"core-foundation-sys",
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"libc",
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]
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[[package]]
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[[package]]
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d0a5c400df2834b80a4c3327b3aad3a4c4cd4de0629063962b03235697506a28"
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[[package]]
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name = "encoding_rs"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "75030f3c4f45dafd7586dd6780965a8c7e8e285a5ecb86713e63a79c5b2766f3"
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dependencies = [
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"cfg-if",
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]
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[[package]]
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name = "event-listener"
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version = "5.4.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e13b66accf52311f30a0db42147dadea9850cb48cd070028831ae5f5d4b856ab"
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dependencies = [
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"concurrent-queue",
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"parking",
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"pin-project-lite",
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]
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[[package]]
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name = "event-listener-strategy"
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version = "0.5.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "8be9f3dfaaffdae2972880079a491a1a8bb7cbed0b8dd7a347f668b4150a3b93"
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dependencies = [
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"event-listener",
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"pin-project-lite",
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]
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[[package]]
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name = "fastrand"
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version = "2.4.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"getrandom",
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]
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[[package]]
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name = "flume"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5e139bc46ca777eb5efaf62df0ab8cc5fd400866427e56c68b22e414e53bd3be"
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dependencies = [
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"fastrand",
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"futures-core",
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"futures-sink",
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"spin",
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]
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[[package]]
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[[package]]
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name = "futures-io"
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[[package]]
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f78e10609fe0e0b3f4157ffab1876319b5b0db102a2c60dc4626306dc46b44ad"
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dependencies = [
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"futures-core",
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"pin-project-lite",
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]
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[[package]]
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name = "futures-sink"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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dependencies = [
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"bitflags",
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"libc",
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"windows-sys",
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]
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[[package]]
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name = "getrandom"
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dependencies = [
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"cfg-if",
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"js-sys",
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"libc",
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"r-efi",
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"wasip2",
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"wasm-bindgen",
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]
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[[package]]
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[[package]]
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|
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|
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|
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"cfg-if",
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[[package]]
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|
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|
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"scopeguard",
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[[package]]
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name = "log"
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[[package]]
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]
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[[package]]
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name = "netconfig-rs"
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dependencies = [
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"cfg-if",
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"core-foundation",
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"ipnet",
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"libc",
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"netlink-packet-core",
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"netlink-packet-route 0.25.1",
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"netlink-sys",
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"nix 0.30.1",
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"scopeguard",
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"system-configuration-sys",
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|
||||||
|
]
|
||||||
|
|
||||||
|
[[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 {
|
devShells.default = pkgs.mkShell {
|
||||||
ERL_AFLAGS = "-kernel shell_history enabled";
|
ERL_AFLAGS = "-kernel shell_history enabled";
|
||||||
|
LIBCLANG_PATH = "${pkgs.llvmPackages.libclang.lib}/lib";
|
||||||
|
buildInputs = with pkgs; [
|
||||||
|
llvmPackages.clang
|
||||||
|
];
|
||||||
packages = with pkgs; [
|
packages = with pkgs; [
|
||||||
elixir
|
elixir
|
||||||
elixir-ls
|
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.
|
# Run "mix help deps" to learn about dependencies.
|
||||||
defp deps do
|
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"},
|
# {:quicer, git: "https://github.com/emqx/quic.git", tag: "0.2.4"},
|
||||||
# {:dep_from_hexpm, "~> 0.3.0"},
|
# {: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"]},
|
"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"]},
|
"snabbkaffe": {:git, "https://github.com/kafka4beam/snabbkaffe.git", "b59298334ed349556f63405d1353184c63c66534", [tag: "1.0.10"]},
|
||||||
"uuid": {:hex, :uuid, "1.1.8", "e22fc04499de0de3ed1116b770c7737779f226ceefa0badb3592e64d5cfb4eb9", [:mix], [], "hexpm", "c790593b4c3b601f5dc2378baae7efaf5b3d73c4c6456ba85759905be792f2ac"},
|
"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