55 lines
1.3 KiB
Rust
55 lines
1.3 KiB
Rust
use log;
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use opensmtpd::{run_filter, Address, Filter, ReportEntry};
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use opensmtpd_derive::register;
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use simplelog::{Config, LevelFilter, WriteLogger};
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use std::fs::File;
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pub const DEFAULT_LOG_FILE: &str = "/tmp/counter.log";
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#[derive(Default)]
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struct MyCounter {
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nb_connected: u64,
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nb_total: u64,
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}
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impl Filter for MyCounter {
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#[register]
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fn on_report_link_connect(
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&mut self,
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_entry: &ReportEntry,
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_rdns: &str,
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_fcrdns: &str,
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_src: &Address,
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_dest: &Address,
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) {
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self.nb_connected += 1;
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self.nb_total += 1;
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log::info!(
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"New client (connected: {}, total: {})",
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self.nb_connected,
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self.nb_total
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);
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}
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#[register]
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fn on_report_link_disconnect(&mut self, _entry: &ReportEntry) {
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self.nb_connected -= 1;
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log::info!(
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"Client left (connected: {}, total: {})",
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self.nb_connected,
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self.nb_total
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);
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}
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}
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fn main() {
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let log_file = std::env::var("LOG_FILE").unwrap_or(String::from(DEFAULT_LOG_FILE));
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WriteLogger::init(
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LevelFilter::Info,
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Config::default(),
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File::create(&log_file).unwrap(),
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)
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.unwrap();
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let mut my_counter: MyCounter = Default::default();
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run_filter(&mut my_counter);
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}
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