Replace custom logging with tracing crate and RUST_LOG env var

- Remove custom logging module and init_logging function
- Update main.rs to use tracing_subscriber with EnvFilter
- Remove log_level from global config structure
- Update documentation and tests to use RUST_LOG
- Format long lines in config.rs and test files for better readability
This commit is contained in:
Jeena 2026-01-22 05:25:46 +00:00
parent 50a4d9bc75
commit 55fe47b172
15 changed files with 787 additions and 459 deletions

View file

@ -7,7 +7,6 @@ pub struct Config {
// Global defaults (optional)
pub bind_host: Option<String>,
pub port: Option<u16>,
pub log_level: Option<String>,
pub max_concurrent_requests: Option<usize>,
// Per-hostname configurations
@ -21,7 +20,7 @@ pub struct HostConfig {
pub key: String,
#[serde(default)]
#[allow(dead_code)]
pub port: Option<u16>, // override global port
pub port: Option<u16>, // override global port
#[serde(default)]
#[allow(dead_code)]
pub log_level: Option<String>, // override global log level
@ -34,7 +33,6 @@ pub fn load_config(path: &str) -> Result<Config, Box<dyn std::error::Error>> {
// Extract global settings
let bind_host = extract_string(&toml_value, "bind_host");
let port = extract_u16(&toml_value, "port");
let log_level = extract_string(&toml_value, "log_level");
let max_concurrent_requests = extract_usize(&toml_value, "max_concurrent_requests");
// Extract host configurations
@ -43,7 +41,10 @@ pub fn load_config(path: &str) -> Result<Config, Box<dyn std::error::Error>> {
if let Some(table) = toml_value.as_table() {
for (key, value) in table {
// Skip global config keys
if matches!(key.as_str(), "bind_host" | "port" | "log_level" | "max_concurrent_requests") {
if matches!(
key.as_str(),
"bind_host" | "port" | "max_concurrent_requests"
) {
continue;
}
@ -57,7 +58,11 @@ pub fn load_config(path: &str) -> Result<Config, Box<dyn std::error::Error>> {
// Validate hostname
if !is_valid_hostname(key) {
return Err(format!("Invalid hostname '{}'. Hostnames must be valid DNS names.", key).into());
return Err(format!(
"Invalid hostname '{}'. Hostnames must be valid DNS names.",
key
)
.into());
}
// Validate that root directory exists
@ -96,34 +101,53 @@ pub fn load_config(path: &str) -> Result<Config, Box<dyn std::error::Error>> {
Ok(Config {
bind_host,
port,
log_level,
max_concurrent_requests,
hosts,
})
}
fn extract_string(value: &Value, key: &str) -> Option<String> {
value.get(key).and_then(|v| v.as_str()).map(|s| s.to_string())
value
.get(key)
.and_then(|v| v.as_str())
.map(|s| s.to_string())
}
fn extract_string_from_table(table: &toml::map::Map<String, Value>, key: &str) -> Option<String> {
table.get(key).and_then(|v| v.as_str()).map(|s| s.to_string())
table
.get(key)
.and_then(|v| v.as_str())
.map(|s| s.to_string())
}
fn extract_u16(value: &Value, key: &str) -> Option<u16> {
value.get(key).and_then(|v| v.as_integer()).and_then(|i| u16::try_from(i).ok())
value
.get(key)
.and_then(|v| v.as_integer())
.and_then(|i| u16::try_from(i).ok())
}
fn extract_u16_from_table(table: &toml::map::Map<String, Value>, key: &str) -> Option<u16> {
table.get(key).and_then(|v| v.as_integer()).and_then(|i| u16::try_from(i).ok())
table
.get(key)
.and_then(|v| v.as_integer())
.and_then(|i| u16::try_from(i).ok())
}
fn extract_usize(value: &Value, key: &str) -> Option<usize> {
value.get(key).and_then(|v| v.as_integer()).and_then(|i| usize::try_from(i).ok())
value
.get(key)
.and_then(|v| v.as_integer())
.and_then(|i| usize::try_from(i).ok())
}
fn extract_required_string(table: &toml::map::Map<String, Value>, key: &str, section: &str) -> Result<String, Box<dyn std::error::Error>> {
table.get(key)
fn extract_required_string(
table: &toml::map::Map<String, Value>,
key: &str,
section: &str,
) -> Result<String, Box<dyn std::error::Error>> {
table
.get(key)
.and_then(|v| v.as_str())
.map(|s| s.to_string())
.ok_or_else(|| format!("Missing required field '{}' in [{}] section", key, section).into())
@ -204,7 +228,9 @@ mod tests {
assert!(!is_valid_hostname("invalid..com"));
assert!(!is_valid_hostname("invalid.com."));
assert!(!is_valid_hostname("inval!d.com"));
assert!(is_valid_hostname("too.long.label.that.exceeds.sixty.three.characters.example.com"));
assert!(is_valid_hostname(
"too.long.label.that.exceeds.sixty.three.characters.example.com"
));
}
#[test]
@ -220,14 +246,19 @@ mod tests {
fs::write(&cert_path, "dummy cert").unwrap();
fs::write(&key_path, "dummy key").unwrap();
let content = format!(r#"
let content = format!(
r#"
["example.com"]
root = "{}"
cert = "{}"
key = "{}"
port = 1965
log_level = "info"
"#, root_dir.display(), cert_path.display(), key_path.display());
"#,
root_dir.display(),
cert_path.display(),
key_path.display()
);
fs::write(&config_path, content).unwrap();
let config = load_config(config_path.to_str().unwrap()).unwrap();
@ -262,7 +293,8 @@ mod tests {
fs::write(&site2_cert, "dummy cert 2").unwrap();
fs::write(&site2_key, "dummy key 2").unwrap();
let content = format!(r#"
let content = format!(
r#"
["site1.com"]
root = "{}"
cert = "{}"
@ -273,8 +305,14 @@ mod tests {
cert = "{}"
key = "{}"
port = 1966
"#, site1_root.display(), site1_cert.display(), site1_key.display(),
site2_root.display(), site2_cert.display(), site2_key.display());
"#,
site1_root.display(),
site1_cert.display(),
site1_key.display(),
site2_root.display(),
site2_cert.display(),
site2_key.display()
);
fs::write(&config_path, content).unwrap();
let config = load_config(config_path.to_str().unwrap()).unwrap();
@ -303,7 +341,10 @@ mod tests {
let result = load_config(config_path.to_str().unwrap());
assert!(result.is_err());
assert!(result.unwrap_err().to_string().contains("No host configurations found"));
assert!(result
.unwrap_err()
.to_string()
.contains("No host configurations found"));
}
#[test]
@ -347,4 +388,4 @@ mod tests {
// Config parsing will fail if required fields are missing
assert!(load_config(config_path.to_str().unwrap()).is_err());
}
}
}

View file

@ -1,106 +1,5 @@
use tokio::net::TcpStream;
use std::time::Instant;
use tokio_rustls::server::TlsStream;
use tracing_subscriber::fmt::format::Writer;
use tracing_subscriber::fmt::FormatFields;
struct CleanLogFormatter;
impl<S, N> tracing_subscriber::fmt::FormatEvent<S, N> for CleanLogFormatter
where
S: tracing::Subscriber + for<'a> tracing_subscriber::registry::LookupSpan<'a>,
N: for<'a> tracing_subscriber::fmt::FormatFields<'a> + 'static,
{
fn format_event(
&self,
ctx: &tracing_subscriber::fmt::FmtContext<'_, S, N>,
mut writer: Writer<'_>,
event: &tracing::Event<'_>,
) -> std::fmt::Result {
// Write timestamp
let now = time::OffsetDateTime::now_utc();
write!(writer, "{}-{:02}-{:02}T{:02}:{:02}:{:02} ",
now.year(), now.month() as u8, now.day(),
now.hour(), now.minute(), now.second())?;
// Write level
let level = event.metadata().level();
write!(writer, "{} ", level)?;
// Write the message
ctx.format_fields(writer.by_ref(), event)?;
writeln!(writer)
}
}
#[allow(dead_code)]
pub struct RequestLogger {
request_url: String,
start_time: Instant,
}
impl RequestLogger {
#[allow(dead_code)]
pub fn new(_stream: &TlsStream<TcpStream>, request_url: String) -> Self {
Self {
request_url,
start_time: Instant::now(),
}
}
#[allow(dead_code)]
pub fn log_error(self, status_code: u8, error_message: &str) {
let level = match status_code {
41 | 51 => tracing::Level::WARN,
59 => tracing::Level::ERROR,
_ => tracing::Level::ERROR,
};
let request_path = self.request_url.strip_prefix("gemini://localhost").unwrap_or(&self.request_url);
match level {
tracing::Level::WARN => tracing::warn!("unknown \"{}\" {} \"{}\"", request_path, status_code, error_message),
tracing::Level::ERROR => tracing::error!("unknown \"{}\" {} \"{}\"", request_path, status_code, error_message),
_ => {}
}
}
}
#[allow(dead_code)]
fn extract_client_ip(stream: &TlsStream<TcpStream>) -> String {
let (tcp_stream, _) = stream.get_ref();
match tcp_stream.peer_addr() {
Ok(addr) => addr.to_string(),
Err(_) => "unknown".to_string(),
}
}
pub fn init_logging(level: &str) {
use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
let level = match level.to_lowercase().as_str() {
"error" => tracing::Level::ERROR,
"warn" => tracing::Level::WARN,
"info" => tracing::Level::INFO,
"debug" => tracing::Level::DEBUG,
"trace" => tracing::Level::TRACE,
_ => {
eprintln!("Warning: Invalid log level '{}', defaulting to 'info'", level);
tracing::Level::INFO
}
};
tracing_subscriber::registry()
.with(tracing_subscriber::fmt::layer()
.event_format(CleanLogFormatter))
.with(tracing_subscriber::filter::LevelFilter::from_level(level))
.init();
}
// Logging module - now unused as logging is handled directly in main.rs
// All logging functionality moved to main.rs with RUST_LOG environment variable support
#[cfg(test)]
mod tests {
@ -109,4 +8,4 @@ mod tests {
// Basic test to ensure logging module compiles
assert!(true);
}
}
}

View file

@ -1,8 +1,8 @@
mod config;
mod tls;
mod logging;
mod request;
mod server;
mod logging;
mod tls;
use clap::Parser;
use rustls::ServerConfig;
@ -10,9 +10,11 @@ use std::path::Path;
use std::sync::Arc;
use tokio::net::TcpListener;
use tokio_rustls::TlsAcceptor;
use logging::init_logging;
use tracing_subscriber::EnvFilter;
fn create_tls_config(hosts: &std::collections::HashMap<String, config::HostConfig>) -> Result<Arc<ServerConfig>, Box<dyn std::error::Error>> {
fn create_tls_config(
hosts: &std::collections::HashMap<String, config::HostConfig>,
) -> Result<Arc<ServerConfig>, Box<dyn std::error::Error>> {
// For Phase 3, we'll use the first host's certificate for all connections
// TODO: Phase 4 could implement proper SNI-based certificate selection
let first_host = hosts.values().next().ok_or("No hosts configured")?;
@ -28,7 +30,10 @@ fn create_tls_config(hosts: &std::collections::HashMap<String, config::HostConfi
Ok(Arc::new(config))
}
fn print_startup_info(config: &config::Config, hosts: &std::collections::HashMap<String, config::HostConfig>) {
fn print_startup_info(
config: &config::Config,
hosts: &std::collections::HashMap<String, config::HostConfig>,
) {
println!("Pollux Gemini Server (Virtual Host Mode)");
println!("Configured hosts:");
for (hostname, host_config) in hosts {
@ -41,17 +46,13 @@ fn print_startup_info(config: &config::Config, hosts: &std::collections::HashMap
if let Some(port) = config.port {
println!(" Default port: {}", port);
}
if let Some(ref level) = config.log_level {
println!(" Log level: {}", level);
}
if let Some(max_concurrent) = config.max_concurrent_requests {
println!(" Max concurrent requests: {}", max_concurrent);
}
println!(); // Add spacing before connections start
}
#[derive(Parser)]
#[command(author, version, about, long_about = None)]
struct Args {
@ -64,8 +65,6 @@ struct Args {
test_processing_delay: Option<u64>,
}
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
let args = Args::parse();
@ -73,21 +72,41 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
// Load config
let config_path = args.config.as_deref().unwrap_or("/etc/pollux/config.toml");
if !std::path::Path::new(&config_path).exists() {
eprintln!("Error: Config file '{}' not found", config_path);
eprintln!("Create the config file with virtual host sections like:");
eprintln!("[example.com]");
eprintln!("root = \"/srv/gemini/example.com/gemini/\"");
eprintln!("cert = \"/srv/gemini/example.com/tls/fullchain.pem\"");
eprintln!("key = \"/srv/gemini/example.com/tls/privkey.pem\"");
// User guidance goes to stdout BEFORE initializing tracing
// Use direct stderr for error, stdout for guidance
use std::io::Write;
let mut stderr = std::io::stderr();
let mut stdout = std::io::stdout();
writeln!(stderr, "Config file '{}' not found", config_path).unwrap();
writeln!(
stdout,
"Create the config file with virtual host sections like:"
)
.unwrap();
writeln!(stdout, "[example.com]").unwrap();
writeln!(stdout, "root = \"/var/gemini\"").unwrap();
writeln!(stdout, "cert = \"/etc/pollux/tls/cert.pem\"").unwrap();
writeln!(stdout, "key = \"/etc/pollux/tls/key.pem\"").unwrap();
stdout.flush().unwrap();
std::process::exit(1);
}
// Initialize logging with RUST_LOG support AFTER basic config checks
tracing_subscriber::fmt()
.with_env_filter(EnvFilter::from_default_env())
.with_writer(std::io::stderr)
.init();
// Load and parse config
let config = match config::load_config(config_path) {
Ok(config) => config,
Err(e) => {
eprintln!("Error: Failed to parse config file '{}': {}", config_path, e);
eprintln!("Check the TOML syntax and ensure host sections are properly formatted.");
tracing::error!("Failed to parse config file '{}': {}", config_path, e);
tracing::error!(
"Check the TOML syntax and ensure host sections are properly formatted."
);
std::process::exit(1);
}
};
@ -97,61 +116,88 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
// Validate root directory exists and is readable
let root_path = Path::new(&host_config.root);
if !root_path.exists() {
eprintln!("Error: Root directory '{}' for host '{}' does not exist", host_config.root, hostname);
eprintln!("Create the directory and add your Gemini files (.gmi, .txt, images)");
tracing::error!(
"Root directory '{}' for host '{}' does not exist",
host_config.root,
hostname
);
tracing::error!("Create the directory and add your Gemini files (.gmi, .txt, images)");
std::process::exit(1);
}
if !root_path.is_dir() {
eprintln!("Error: Root path '{}' for host '{}' is not a directory", host_config.root, hostname);
eprintln!("The 'root' field must point to a directory containing your content");
tracing::error!(
"Root path '{}' for host '{}' is not a directory",
host_config.root,
hostname
);
tracing::error!("The 'root' field must point to a directory containing your content");
std::process::exit(1);
}
if let Err(e) = std::fs::read_dir(root_path) {
eprintln!("Error: Cannot read root directory '{}' for host '{}': {}", host_config.root, hostname, e);
eprintln!("Ensure the directory exists and the server user has read permission");
tracing::error!(
"Cannot read root directory '{}' for host '{}': {}",
host_config.root,
hostname,
e
);
tracing::error!("Ensure the directory exists and the server user has read permission");
std::process::exit(1);
}
// Validate certificate files (always required for TLS)
let cert_path = Path::new(&host_config.cert);
if !cert_path.exists() {
eprintln!("Error: Certificate file '{}' for host '{}' does not exist", host_config.cert, hostname);
eprintln!(
"Error: Certificate file '{}' for host '{}' does not exist",
host_config.cert, hostname
);
eprintln!("Generate or obtain TLS certificates for your domain");
std::process::exit(1);
}
if let Err(e) = std::fs::File::open(cert_path) {
eprintln!("Error: Cannot read certificate file '{}' for host '{}': {}", host_config.cert, hostname, e);
eprintln!("Ensure the file exists and the server user has read permission");
tracing::error!(
"Cannot read certificate file '{}' for host '{}': {}",
host_config.cert,
hostname,
e
);
tracing::error!("Ensure the file exists and the server user has read permission");
std::process::exit(1);
}
let key_path = Path::new(&host_config.key);
if !key_path.exists() {
eprintln!("Error: Private key file '{}' for host '{}' does not exist", host_config.key, hostname);
eprintln!("Generate or obtain TLS private key for your domain");
tracing::error!(
"Private key file '{}' for host '{}' does not exist",
host_config.key,
hostname
);
tracing::error!("Generate or obtain TLS private key for your domain");
std::process::exit(1);
}
if let Err(e) = std::fs::File::open(key_path) {
eprintln!("Error: Cannot read private key file '{}' for host '{}': {}", host_config.key, hostname, e);
eprintln!("Ensure the file exists and the server user has read permission");
tracing::error!(
"Cannot read private key file '{}' for host '{}': {}",
host_config.key,
hostname,
e
);
tracing::error!("Ensure the file exists and the server user has read permission");
std::process::exit(1);
}
}
// Initialize logging
let log_level = config.log_level.as_deref().unwrap_or("info");
init_logging(log_level);
// Validate max concurrent requests
let max_concurrent_requests = config.max_concurrent_requests.unwrap_or(1000);
if max_concurrent_requests == 0 || max_concurrent_requests > 1_000_000 {
eprintln!("Error: max_concurrent_requests must be between 1 and 1,000,000");
tracing::error!("max_concurrent_requests must be between 1 and 1,000,000");
std::process::exit(1);
}
// TESTING ONLY: Read delay argument (debug builds only)
#[cfg(debug_assertions)]
let test_processing_delay = args.test_processing_delay
let test_processing_delay = args
.test_processing_delay
.filter(|&d| d > 0 && d <= 300)
.unwrap_or(0);
@ -172,7 +218,10 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
let port = config.port.unwrap_or(1965);
let listener = TcpListener::bind(format!("{}:{}", bind_host, port)).await?;
println!("Listening on {}:{} for all virtual hosts (TLS enabled)", bind_host, port);
println!(
"Listening on {}:{} for all virtual hosts (TLS enabled)",
bind_host, port
);
loop {
let (stream, _) = listener.accept().await?;
@ -186,14 +235,21 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
// TLS connection with hostname routing
match acceptor_clone.accept(stream).await {
Ok(tls_stream) => {
if let Err(e) = server::handle_connection(tls_stream, &hosts_clone, max_concurrent, test_delay).await {
eprintln!("Error handling connection: {}", e);
if let Err(e) = server::handle_connection(
tls_stream,
&hosts_clone,
max_concurrent,
test_delay,
)
.await
{
tracing::error!("Error handling connection: {}", e);
}
}
Err(e) => {
eprintln!("TLS handshake failed: {}", e);
tracing::error!("TLS handshake failed: {}", e);
}
}
});
}
}
}

View file

@ -11,7 +11,7 @@ pub fn parse_gemini_url(request: &str, hostname: &str, expected_port: u16) -> Re
if let Some(url) = request.strip_prefix("gemini://") {
let host_port_end = url.find('/').unwrap_or(url.len());
let host_port = &url[..host_port_end];
// Parse host and port
let (host, port_str) = if let Some(colon_pos) = host_port.find(':') {
let host = &host_port[..colon_pos];
@ -20,21 +20,23 @@ pub fn parse_gemini_url(request: &str, hostname: &str, expected_port: u16) -> Re
} else {
(host_port, None)
};
// Validate host
if host != hostname {
return Err(()); // Hostname mismatch
return Err(()); // Hostname mismatch
}
// Validate port
let port = port_str
.and_then(|p| p.parse::<u16>().ok())
.unwrap_or(1965);
let port = port_str.and_then(|p| p.parse::<u16>().ok()).unwrap_or(1965);
if port != expected_port {
return Err(()); // Port mismatch
return Err(()); // Port mismatch
}
let path = if host_port_end < url.len() { &url[host_port_end..] } else { "/" };
let path = if host_port_end < url.len() {
&url[host_port_end..]
} else {
"/"
};
Ok(path.trim().to_string())
} else {
Err(())
@ -58,11 +60,11 @@ pub fn resolve_file_path(path: &str, dir: &str) -> Result<PathBuf, PathResolutio
} else {
Err(PathResolutionError::NotFound)
}
},
}
Err(_) => {
// Path validation failed - treat as not found
Err(PathResolutionError::NotFound)
},
}
}
}
@ -90,8 +92,18 @@ mod tests {
#[test]
fn test_parse_gemini_url_valid() {
assert_eq!(parse_gemini_url("gemini://gemini.jeena.net/", "gemini.jeena.net", 1965), Ok("/".to_string()));
assert_eq!(parse_gemini_url("gemini://gemini.jeena.net/posts/test", "gemini.jeena.net", 1965), Ok("/posts/test".to_string()));
assert_eq!(
parse_gemini_url("gemini://gemini.jeena.net/", "gemini.jeena.net", 1965),
Ok("/".to_string())
);
assert_eq!(
parse_gemini_url(
"gemini://gemini.jeena.net/posts/test",
"gemini.jeena.net",
1965
),
Ok("/posts/test".to_string())
);
}
#[test]
@ -130,14 +142,20 @@ mod tests {
#[test]
fn test_resolve_file_path_traversal() {
let temp_dir = TempDir::new().unwrap();
assert_eq!(resolve_file_path("/../etc/passwd", temp_dir.path().to_str().unwrap()), Err(PathResolutionError::NotFound));
assert_eq!(
resolve_file_path("/../etc/passwd", temp_dir.path().to_str().unwrap()),
Err(PathResolutionError::NotFound)
);
}
#[test]
fn test_resolve_file_path_not_found() {
let temp_dir = TempDir::new().unwrap();
// Don't create the file, should return NotFound error
assert_eq!(resolve_file_path("/nonexistent.gmi", temp_dir.path().to_str().unwrap()), Err(PathResolutionError::NotFound));
assert_eq!(
resolve_file_path("/nonexistent.gmi", temp_dir.path().to_str().unwrap()),
Err(PathResolutionError::NotFound)
);
}
#[test]
@ -163,4 +181,4 @@ mod tests {
let path = Path::new("test");
assert_eq!(get_mime_type(path), "application/octet-stream");
}
}
}

View file

@ -1,4 +1,4 @@
use crate::request::{resolve_file_path, get_mime_type};
use crate::request::{get_mime_type, resolve_file_path};
use std::fs;
use std::io;
use std::path::Path;
@ -8,8 +8,6 @@ use tokio::net::TcpStream;
use tokio::time::{timeout, Duration};
use tokio_rustls::server::TlsStream;
static ACTIVE_REQUESTS: AtomicUsize = AtomicUsize::new(0);
/// Extract hostname and path from a Gemini URL
@ -35,8 +33,7 @@ pub fn extract_hostname_and_path(request: &str) -> Result<(String, String), ()>
}
// URL decode the path
let decoded_path = urlencoding::decode(&path)
.map_err(|_| ())?;
let decoded_path = urlencoding::decode(&path).map_err(|_| ())?;
Ok((hostname.to_string(), decoded_path.to_string()))
}
@ -54,7 +51,10 @@ pub async fn handle_connection(
let read_future = async {
loop {
if request_buf.len() >= MAX_REQUEST_SIZE {
return Err(tokio::io::Error::new(tokio::io::ErrorKind::InvalidData, "Request too large"));
return Err(tokio::io::Error::new(
tokio::io::ErrorKind::InvalidData,
"Request too large",
));
}
let mut byte = [0; 1];
stream.read_exact(&mut byte).await?;
@ -154,11 +154,7 @@ pub async fn handle_connection(
Ok(())
}
async fn serve_file<S>(
stream: &mut S,
file_path: &Path,
_request: &str,
) -> io::Result<()>
async fn serve_file<S>(stream: &mut S, file_path: &Path, _request: &str) -> io::Result<()>
where
S: AsyncWriteExt + Unpin,
{
@ -177,14 +173,11 @@ where
Ok(())
}
async fn send_response<S>(
stream: &mut S,
response: &str,
) -> io::Result<()>
async fn send_response<S>(stream: &mut S, response: &str) -> io::Result<()>
where
S: AsyncWriteExt + Unpin,
{
stream.write_all(response.as_bytes()).await?;
stream.flush().await?;
Ok(())
}
}

View file

@ -24,5 +24,8 @@ pub fn load_private_key(filename: &str) -> io::Result<rustls::PrivateKey> {
}
}
Err(io::Error::new(io::ErrorKind::InvalidData, "No supported private key found"))
}
Err(io::Error::new(
io::ErrorKind::InvalidData,
"No supported private key found",
))
}