tokio-gemini/examples/main.rs

114 lines
2.8 KiB
Rust

use tokio_gemini::{
certs::{file_sscv::FileBasedCertVerifier, insecure::AllowAllCertVerifier},
dns::DnsClient,
Client, LibError,
};
//
// cargo add tokio_gemini -F file-sscv,hickory
// cargo add tokio -F macros,rt-multi-thread,io-util,fs
//
const USAGE: &str = "-k\t\tinsecure mode (trust all certs)
-d <DNS server addr>\tuse custom DNS for resolving & DANE
-h\t\tshow help";
struct Config {
insecure: bool,
dns: Option<String>,
url: String,
}
#[tokio::main]
async fn main() -> Result<(), LibError> {
let config = parse_args();
let client = build_client(&config).await?;
let mut resp = client.request(&config.url).await?;
{
let status_code = resp.status().status_code();
let status_num: u8 = status_code.into();
eprintln!("{} {:?}", status_num, status_code);
}
if resp.status().reply_type() == tokio_gemini::ReplyType::Success {
let mime = resp.mime()?;
eprintln!("Mime: {}", mime);
if mime.type_() == mime::TEXT {
println!("{}", resp.text().await?);
} else {
eprintln!("Downloading into content.bin");
let mut f = tokio::fs::File::create("content.bin").await?;
tokio::io::copy(&mut resp.stream(), &mut f).await?;
}
} else {
eprintln!("Message: {}", resp.message());
}
Ok(())
}
fn parse_args() -> Config {
let mut config = Config {
insecure: false,
dns: None,
url: "gemini://geminiprotocol.net/".to_owned(),
};
let mut expected_dns = false;
for arg in std::env::args().skip(1) {
match arg.as_str() {
dns if expected_dns => {
config.dns = Some(dns.to_owned());
expected_dns = false;
}
"-k" => config.insecure = true,
"-d" => expected_dns = true,
"-h" => {
println!("{}", USAGE);
std::process::exit(0);
}
url => {
println!("URL: {}", url);
config.url = url.to_owned();
break;
}
}
}
if expected_dns {
println!("{}", USAGE);
std::process::exit(0);
}
config
}
async fn build_client(config: &Config) -> Result<Client, LibError> {
let dns = if let Some(addr) = &config.dns {
Some(DnsClient::init(addr).await?)
} else {
None
};
let client = tokio_gemini::Client::builder();
let client = if config.insecure {
client.with_custom_verifier(AllowAllCertVerifier::yes_i_know_what_i_am_doing())
} else {
client.with_selfsigned_cert_verifier(
FileBasedCertVerifier::init("known_hosts", dns.clone()).await?,
)
};
let client = if let Some(dns) = dns {
client.with_dns_client(dns)
} else {
client
};
Ok(client.build())
}