fabaccess-bffh/bin/bffhd/main.rs

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Rust
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use clap::{Arg, Command, Parser};
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use diflouroborane::{config, Diflouroborane};
use std::str::FromStr;
use std::{env, io, io::Write, path::PathBuf};
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use nix::NixPath;
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use diflouroborane::error::Error;
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fn main() -> anyhow::Result<()> {
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// Argument parsing
// values for the name, description and version are pulled from `Cargo.toml`.
let matches = Command::new(clap::crate_name!())
.version(clap::crate_version!())
.about(clap::crate_description!())
.arg(
Arg::new("config")
.help("Path to the config file to use")
.long("config")
.short('c')
.takes_value(true),
)
.arg(Arg::new("verbosity")
.help("Increase logging verbosity")
.long("verbose")
.short('v')
.multiple_occurrences(true)
.max_occurrences(3)
.conflicts_with("quiet")
)
.arg(Arg::new("quiet")
.help("Decrease logging verbosity")
.long("quiet")
.conflicts_with("verbosity")
)
.arg(Arg::new("log format")
.help("Use an alternative log formatter. Available: Full, Compact, Pretty")
.long("log-format")
.takes_value(true)
.ignore_case(true)
.possible_values(["Full", "Compact", "Pretty"]))
.arg(
Arg::new("print default")
.help("Print a default config to stdout instead of running")
.long("print-default"),
)
.arg(
Arg::new("check config")
.help("Check config for validity")
.long("check"),
)
.arg(
Arg::new("dump")
.help("Dump all internal databases")
.long("dump")
.conflicts_with("load"),
)
.arg(
Arg::new("load")
.help("Load values into the internal databases")
.long("load")
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.takes_value(true)
.conflicts_with("dump"),
)
.arg(Arg::new("keylog")
.help("log TLS keys into PATH. If no path is specified the value of the envvar SSLKEYLOGFILE is used.")
.long("tls-key-log")
.value_name("PATH")
.takes_value(true)
.max_values(1)
.min_values(0)
.default_missing_value("")
)
.get_matches();
let configpath = matches
.value_of("config")
.unwrap_or("/etc/diflouroborane.dhall");
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// Check for the --print-default option first because we don't need to do anything else in that
// case.
if matches.is_present("print default") {
let config = config::Config::default();
let encoded = serde_dhall::serialize(&config).to_string().unwrap();
// Direct writing to fd 1 is faster but also prevents any print-formatting that could
// invalidate the generated TOML
let stdout = io::stdout();
let mut handle = stdout.lock();
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handle.write_all(encoded.as_bytes()).unwrap();
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// Early return to exit.
return Ok(());
} else if matches.is_present("check config") {
match config::read(&PathBuf::from_str(configpath).unwrap()) {
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Ok(c) => {
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let formatted = format!("{:#?}", c);
// Direct writing to fd 1 is faster but also prevents any print-formatting that could
// invalidate the generated TOML
let stdout = io::stdout();
let mut handle = stdout.lock();
handle.write_all(formatted.as_bytes()).unwrap();
// Early return to exit.
return Ok(());
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}
Err(e) => {
eprintln!("{}", e);
std::process::exit(-1);
}
}
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}
let mut config = config::read(&PathBuf::from_str(configpath).unwrap()).unwrap();
if matches.is_present("dump") {
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unimplemented!()
} else if matches.is_present("load") {
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let bffh = Diflouroborane::new(config)?;
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if bffh.users.load_file(matches.value_of("load").unwrap()).is_ok() {
tracing::info!("loaded users from {}", matches.value_of("load").unwrap());
} else {
tracing::error!("failed to load users from {}", matches.value_of("load").unwrap());
}
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return Ok(())
} else {
let keylog = matches.value_of("keylog");
// When passed an empty string (i.e no value) take the value from the env
let keylog = if let Some("") = keylog {
let v = env::var_os("SSLKEYLOGFILE").map(PathBuf::from);
if v.is_none() || v.as_ref().unwrap().is_empty() {
eprintln!("--tls-key-log set but no path configured!");
return Ok(());
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}
v
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} else {
keylog.map(PathBuf::from)
};
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config.tlskeylog = keylog;
config.verbosity = matches.occurrences_of("verbosity") as isize;
if config.verbosity == 0 && matches.is_present("quiet") {
config.verbosity = -1;
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}
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config.logging.format = matches.value_of("log format").unwrap_or("full").to_string();
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let mut bffh = Diflouroborane::new(config)?;
bffh.run()?;
}
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Ok(())
}