Implement config parsing
This commit is contained in:
commit
e062c4e8cc
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/target
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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 = 3
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[[package]]
|
||||
name = "autocfg"
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dependencies = [
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"futures-core",
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]
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[[package]]
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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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dependencies = [
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"futures-core",
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"futures-task",
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"pin-project-lite",
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"pin-utils",
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]
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[[package]]
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dependencies = [
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"bytes",
|
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"fnv",
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"futures-core",
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"futures-sink",
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"futures-util",
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"http",
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"indexmap",
|
||||
"slab",
|
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"tokio",
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"tokio-util",
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"tracing",
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||||
]
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[[package]]
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||||
[[package]]
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name = "http"
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|
||||
dependencies = [
|
||||
"bytes",
|
||||
"fnv",
|
||||
"itoa",
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||||
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|
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[[package]]
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||||
dependencies = [
|
||||
"bytes",
|
||||
"http",
|
||||
"pin-project-lite",
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||||
]
|
||||
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||||
[[package]]
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[[package]]
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|
||||
dependencies = [
|
||||
"bytes",
|
||||
"futures-channel",
|
||||
"futures-core",
|
||||
"futures-util",
|
||||
"h2",
|
||||
"http",
|
||||
"http-body",
|
||||
"httparse",
|
||||
"httpdate",
|
||||
"itoa",
|
||||
"pin-project-lite",
|
||||
"socket2",
|
||||
"tokio",
|
||||
"tower-service",
|
||||
"tracing",
|
||||
"want",
|
||||
]
|
||||
|
||||
[[package]]
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dependencies = [
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||||
"autocfg",
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"hashbrown",
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||||
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||||
|
||||
[[package]]
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||||
dependencies = [
|
||||
"cfg-if",
|
||||
]
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||||
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||||
[[package]]
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||||
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dependencies = [
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||||
"libc",
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"log",
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||||
"wasi",
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||||
"windows-sys",
|
||||
]
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||||
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||||
[[package]]
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||||
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"memchr",
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"minimal-lexical",
|
||||
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||||
|
||||
[[package]]
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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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||||
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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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||||
"once_cell",
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||||
"pin-project-lite",
|
||||
"socket2",
|
||||
"tokio-macros",
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||||
"winapi",
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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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||||
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|
||||
dependencies = [
|
||||
"bytes",
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||||
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||||
"futures-sink",
|
||||
"pin-project-lite",
|
||||
"tokio",
|
||||
"tracing",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
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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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||||
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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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|
||||
"log",
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||||
"try-lock",
|
||||
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||||
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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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||||
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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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||||
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|
||||
|
||||
[[package]]
|
||||
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||||
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|
||||
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||||
dependencies = [
|
||||
"windows_aarch64_msvc",
|
||||
"windows_i686_gnu",
|
||||
"windows_i686_msvc",
|
||||
"windows_x86_64_gnu",
|
||||
"windows_x86_64_msvc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_msvc"
|
||||
version = "0.36.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9bb8c3fd39ade2d67e9874ac4f3db21f0d710bee00fe7cab16949ec184eeaa47"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnu"
|
||||
version = "0.36.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "180e6ccf01daf4c426b846dfc66db1fc518f074baa793aa7d9b9aaeffad6a3b6"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_msvc"
|
||||
version = "0.36.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e2e7917148b2812d1eeafaeb22a97e4813dfa60a3f8f78ebe204bcc88f12f024"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnu"
|
||||
version = "0.36.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "4dcd171b8776c41b97521e5da127a2d86ad280114807d0b2ab1e462bc764d9e1"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_msvc"
|
||||
version = "0.36.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c811ca4a8c853ef420abd8592ba53ddbbac90410fab6903b3e79972a631f7680"
|
||||
|
|
@ -0,0 +1,11 @@
|
|||
[package]
|
||||
name = "proxima"
|
||||
version = "0.1.0"
|
||||
edition = "2021"
|
||||
|
||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||
|
||||
[dependencies]
|
||||
hyper = { version = "^0.14", features = ["full"] }
|
||||
tokio = { version = "^1", features = ["macros"] }
|
||||
nom = "^7"
|
||||
|
|
@ -0,0 +1,275 @@
|
|||
use std::{net::SocketAddr, convert::Infallible};
|
||||
|
||||
use hyper::{Client, Server, service::{make_service_fn, service_fn}, body::HttpBody, Body, Response, Request, Method, http, upgrade::{self, Upgraded}};
|
||||
use tokio::net::TcpStream;
|
||||
|
||||
// https://github.com/hyperium/hyper/blob/master/examples/gateway.rs
|
||||
// https://en.wikipedia.org/wiki/Gateway_(telecommunications)
|
||||
|
||||
#[tokio::main(flavor = "current_thread")]
|
||||
async fn main() {
|
||||
|
||||
// Load and parse the configuration
|
||||
let config = {
|
||||
|
||||
// Prefer ./config over /etc/proxima
|
||||
let file = unsafe {
|
||||
["./config", "/etc/proxima"]
|
||||
.iter()
|
||||
.map(load)
|
||||
.reduce(Result::or)
|
||||
.unwrap_unchecked()
|
||||
};
|
||||
|
||||
file.map(parse)
|
||||
.expect("Loading the config failed.")
|
||||
|
||||
};
|
||||
|
||||
let addr = SocketAddr::from(([127, 0, 0, 1], 8100));
|
||||
}
|
||||
|
||||
pub struct Rule (Pattern, Effect);
|
||||
|
||||
impl Rule {
|
||||
/// Get the domain of the pattern.
|
||||
pub fn domain (&self) -> &str {
|
||||
&self.0.domain
|
||||
}
|
||||
|
||||
/// Get the portspec
|
||||
pub fn ports (&self) -> &Ports {
|
||||
&self.0.ports
|
||||
}
|
||||
|
||||
pub fn effect (&self) -> &Effect {
|
||||
&self.1
|
||||
}
|
||||
}
|
||||
|
||||
pub struct Pattern {
|
||||
domain: String,
|
||||
ports: Ports,
|
||||
}
|
||||
|
||||
pub enum Effect {
|
||||
Redirect (String),
|
||||
Proxy {
|
||||
port: u16,
|
||||
ssl: bool,
|
||||
},
|
||||
}
|
||||
|
||||
impl Effect {
|
||||
pub async fn perform (&self) -> std::io::Result<()> {
|
||||
todo!()
|
||||
}
|
||||
}
|
||||
|
||||
pub enum Ports {
|
||||
Single (u16),
|
||||
Either (Vec<u16>),
|
||||
Any
|
||||
}
|
||||
|
||||
impl Ports {
|
||||
/// Whether this set of ports includes the given port.
|
||||
pub fn includes (&self, p: u16) -> bool {
|
||||
match self {
|
||||
Ports::Single (x) => *x == p,
|
||||
Ports::Either (l) => l.contains(&p),
|
||||
Ports::Any => true,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub mod parse {
|
||||
|
||||
use super::{ Ports, Effect, Pattern, Rule };
|
||||
use nom::{
|
||||
sequence as seq,
|
||||
multi as mul,
|
||||
character::complete as chr,
|
||||
bytes::complete::{self as byt, tag, take_till},
|
||||
Parser, error::ParseError, combinator::opt,
|
||||
};
|
||||
|
||||
pub type PResult<'i, T> = nom::IResult<&'i str, T>;
|
||||
|
||||
fn around <I, O, P, E, A, B> (a: A, b: B) -> impl Parser<I, O, E>
|
||||
where E: ParseError<I>,
|
||||
A: Parser<I, P, E> + Clone,
|
||||
B: Parser<I, O, E>,
|
||||
{
|
||||
seq::delimited(a.clone(), b, a)
|
||||
}
|
||||
|
||||
/// Parse a [`Portspec`].
|
||||
pub (super) fn portspec (s: &str) -> PResult<'_, Ports> {
|
||||
let single = chr::u16;
|
||||
let either = {
|
||||
let delim = around(chr::space1, chr::char('|'));
|
||||
seq::delimited(
|
||||
chr::char('('),
|
||||
mul::separated_list1(delim, single),
|
||||
chr::char(')'),
|
||||
)
|
||||
};
|
||||
let any = byt::tag("any");
|
||||
|
||||
let single = single.map(Ports::Single);
|
||||
let either = either.map(Ports::Either);
|
||||
let any = any.map(|_| Ports::Any);
|
||||
|
||||
single.or(either)
|
||||
.or(any)
|
||||
.parse(s)
|
||||
}
|
||||
|
||||
/// Parse an [`Effect`].
|
||||
pub fn effect (s: &str) -> PResult<'_, Effect> {
|
||||
|
||||
let redirect = {
|
||||
let spaced = |x| seq::delimited(chr::space1, x, chr::space1);
|
||||
let internal = domain;
|
||||
|
||||
seq::preceded(
|
||||
spaced(tag("==>")),
|
||||
internal,
|
||||
).map(Effect::Redirect)
|
||||
};
|
||||
|
||||
let proxy = {
|
||||
let spaced = |x| seq::delimited(chr::space1, x, chr::space1);
|
||||
let ssl = opt(seq::delimited(
|
||||
seq::preceded(chr::space1, chr::char('[')),
|
||||
tag("ssl"),
|
||||
chr::char(']'),
|
||||
)).map(|o| o.is_some());
|
||||
let internal = seq::terminated(chr::u16, chr::space0);
|
||||
|
||||
seq::preceded(
|
||||
spaced(tag("-->")),
|
||||
internal.and(ssl),
|
||||
).map(|(port, ssl)| Effect::Proxy { ssl, port })
|
||||
};
|
||||
|
||||
redirect.or(proxy)
|
||||
.parse(s)
|
||||
|
||||
}
|
||||
|
||||
fn domain (s: &str) -> PResult<'_, String> {
|
||||
take_till(|c: char| !(c == '.' || c.is_alphanumeric()))
|
||||
.map(str::to_string)
|
||||
.parse(s)
|
||||
}
|
||||
|
||||
/// Parse a [`Pattern`].
|
||||
///
|
||||
/// ```
|
||||
/// use proxima::parse;
|
||||
///
|
||||
/// # fn main () -> parse::PResult<'static, ()> {
|
||||
/// let (_, pattern) = parse::pattern("example.com : any")?;
|
||||
/// # Ok ("", ())
|
||||
/// # }
|
||||
/// ```
|
||||
pub fn pattern (s: &str) -> PResult<'_, Pattern> {
|
||||
let spaced = |x| seq::delimited(chr::char(' '), x, chr::char(' '));
|
||||
seq::separated_pair(domain, spaced(chr::char(':')), portspec)
|
||||
.map(|(domain, ports)| Pattern { domain, ports })
|
||||
.parse(s)
|
||||
}
|
||||
|
||||
/// Parse a [`Rule`].
|
||||
pub fn rule (s: &str) -> PResult<'_, Rule> {
|
||||
pattern.and(effect)
|
||||
.map(|(p, e)| Rule (p, e))
|
||||
.parse(s)
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
|
||||
use super::*;
|
||||
|
||||
/// Test whether a pattern containing an Any portspec gets parsed
|
||||
/// correctly.
|
||||
#[test]
|
||||
fn simple_pattern () {
|
||||
let input = "example.com : any";
|
||||
let (_, Pattern { domain, ports }) = pattern(input).unwrap();
|
||||
assert!(domain == "example.com");
|
||||
assert!(match ports {
|
||||
Ports::Any => true,
|
||||
_ => false,
|
||||
})
|
||||
}
|
||||
|
||||
/// Test whether an Either portspec is parsed correctly.
|
||||
#[test]
|
||||
fn either_portspec () {
|
||||
let input = "(69 | 420)";
|
||||
assert!(match portspec(input).unwrap() {
|
||||
("", Ports::Either(p)) => p == [69, 420],
|
||||
_ => false,
|
||||
})
|
||||
}
|
||||
|
||||
/// Test whether domain names are parsed correctly.
|
||||
#[test]
|
||||
fn domains () {
|
||||
let inputs = ["example.com", "im.badat.dev", "riley.lgbt", "toot.site", "a.b.c.d.e.f.g.h"];
|
||||
// Each of these should be considered valid
|
||||
for input in inputs {
|
||||
domain(input).unwrap();
|
||||
}
|
||||
}
|
||||
|
||||
/// Test whether a simple rule gets parsed correctly.
|
||||
#[test]
|
||||
fn simple_rule () {
|
||||
let input = "example.gay : any --> 3000";
|
||||
let (_, Rule (_, effect)) = rule(input).unwrap();
|
||||
assert!(match effect {
|
||||
Effect::Proxy { port: 3000, ssl } if !ssl => true,
|
||||
_ => false,
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/// A config consists of a set if [`Rule`].
|
||||
pub struct Config (Vec<Rule>);
|
||||
|
||||
/// Load a config from a path.
|
||||
pub fn load (p: impl AsRef<std::path::Path>) -> std::io::Result<String> {
|
||||
std::fs::read_to_string(p.as_ref())
|
||||
}
|
||||
|
||||
/// Parse a config string.
|
||||
///
|
||||
/// Example config string:
|
||||
///
|
||||
/// ```text
|
||||
/// hmt.riley.lgbt : (80 | 443) --> 6000 # --> is proxy_pass
|
||||
/// riley.lgbt : (80 | 443) --> 3000 [ssl] # add [ssl] to automate ssl for this domain
|
||||
/// rly.cx : any ==> riley.lgbt # ==> is HTTP redirect
|
||||
/// ```
|
||||
pub fn parse (data: String) -> Config {
|
||||
let rules = data
|
||||
.lines()
|
||||
.map(parse::rule)
|
||||
.filter_map(|x| match x {
|
||||
Ok ((_, rule)) => Some (rule),
|
||||
Err (e) => {
|
||||
eprintln!("Error parsing rule: {:?}", e);
|
||||
None
|
||||
},
|
||||
})
|
||||
.collect();
|
||||
|
||||
Config (rules)
|
||||
}
|
||||
Loading…
Reference in New Issue