XMPP reverse proxy and outgoing proxy https://github.com/moparisthebest/xmpp-proxy
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use std::{env, fs::File, io::Write, path::Path};
fn main() {
println!("cargo:rerun-if-changed=build.rs");
let out_dir = env::var_os("OUT_DIR").unwrap();
let dest_path = Path::new(&out_dir).join("version.rs");
let mut w = File::create(dest_path).unwrap();
let allowed_features = [
"c2s-incoming",
"c2s-outgoing",
"s2s-incoming",
"s2s-outgoing",
"tls",
"quic",
"websocket",
"tls-ca-roots-native",
"tls-ca-roots-bundled",
];
let optional_deps = [
"rustls",
"tokio-rustls",
"rustls-pemfile",
"quinn",
"tokio-tungstenite",
"futures-util",
"trust-dns-resolver",
"reqwest",
"lazy-static",
"rustls-native-certs",
"webpki-roots",
"env-logger",
"rand",
];
let mut features = Vec::new();
let mut optional = Vec::new();
for (mut key, value) in env::vars() {
//writeln!(&mut w, "{key}: {value}", ).unwrap();
if value == "1" && key.starts_with("CARGO_FEATURE_") {
let mut key = key.split_off(14).replace('_', "-");
key.make_ascii_lowercase();
if allowed_features.contains(&key.as_str()) {
features.push(key);
} else if optional_deps.contains(&key.as_str()) {
optional.push(key);
}
}
}
features.sort_by(|a, b| {
allowed_features
.iter()
.position(|&r| r == a)
.unwrap()
.partial_cmp(&allowed_features.iter().position(|&r| r == b).unwrap())
.unwrap()
});
optional.sort_by(|a, b| {
optional_deps
.iter()
.position(|&r| r == a)
.unwrap()
.partial_cmp(&optional_deps.iter().position(|&r| r == b).unwrap())
.unwrap()
});
let features = features.join(",");
let optional = optional.join(",");
let name = env!("CARGO_PKG_NAME");
let version = env!("CARGO_PKG_VERSION");
let target = env::var("TARGET").unwrap();
writeln!(
&mut w,
"{{println!(
\"{name} {version} ({target})
Features: {features}
Optional crates: {optional}\");}}"
)
.unwrap();
}