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17
Cargo.toml Normal file
View File

@@ -0,0 +1,17 @@
[package]
name = "postfix-log-viewer"
version = "0.1.0"
edition = "2021"
[dependencies]
crossterm = { version = "0.27.0", features = ["event-stream"] }
ratatui = { version = "0.24.0", features = ["crossterm"] }
chrono = { version = "0.4.24", features = ["serde"] }
regex = "1.9.0"
anyhow = "1.0.71"
log = "0.4.17"
simplelog = "0.12.1"
lazy_static = "1.4.0"
[features]
default = []

14
sample.log Normal file
View File

@@ -0,0 +1,14 @@
May 11 10:00:01 mail postfix/smtpd[12345]: connect from unknown[192.168.1.100]
May 11 10:00:02 mail postfix/smtpd[12345]: ABC12345: client=unknown[192.168.1.100]
May 11 10:00:03 mail postfix/cleanup[12346]: ABC12345: message-id=<test@example.com>
May 11 10:00:04 mail postfix/qmgr[12347]: ABC12345: from=<sender@example.com>, size=1234, nrcpt=1 (queue active)
May 11 10:00:05 mail postfix/smtp[12348]: ABC12345: to=<recipient@example.com>, relay=example.com[1.2.3.4]:25, delay=1.2, delays=0.1/0.1/0.5/0.5, dsn=2.0.0, status=sent (250 OK)
May 11 10:00:06 mail postfix/qmgr[12347]: ABC12345: removed
May 11 10:01:01 mail postfix/smtpd[12350]: connect from unknown[192.168.1.101]
May 11 10:01:02 mail postfix/smtpd[12350]: DEF67890: client=unknown[192.168.1.101]
May 11 10:01:03 mail postfix/cleanup[12351]: DEF67890: message-id=<test2@example.com>
May 11 10:01:04 mail postfix/qmgr[12347]: DEF67890: from=<another@example.com>, size=5678, nrcpt=2 (queue active)
May 11 10:01:05 mail postfix/smtp[12352]: DEF67890: to=<user1@example.com>, relay=example.com[1.2.3.4]:25, delay=1.3, dsn=2.0.0, status=sent (250 OK)
May 11 10:01:06 mail postfix/smtp[12353]: DEF67890: to=<user2@example.com>, relay=example.com[1.2.3.4]:25, delay=1.4, dsn=2.0.0, status=sent (250 OK)
May 11 10:01:07 mail postfix/qmgr[12347]: DEF67890: removed

85
src/main.rs Normal file
View File

@@ -0,0 +1,85 @@
mod models;
mod parser;
mod ui;
use anyhow::{Context, Result};
use crossterm::{
event::{self, DisableMouseCapture, EnableMouseCapture, Event, KeyEventKind},
execute,
terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use ratatui::{backend::CrosstermBackend, Terminal};
use std::{env, fs, io, time::Duration};
use ui::App;
fn run_app(
terminal: &mut Terminal<CrosstermBackend<io::Stdout>>,
mut app: App,
) -> io::Result<()> {
let tick_rate = Duration::from_millis(250);
loop {
terminal.draw(|f| ui::ui(f, &app))?;
if crossterm::event::poll(tick_rate)? {
if let Event::Key(key) = event::read()? {
if key.kind == KeyEventKind::Press {
app.on_key(key);
}
}
}
if app.should_quit {
return Ok(());
}
}
}
fn main() -> Result<()> {
// Parse command line arguments
let args: Vec<String> = env::args().collect();
if args.len() != 2 {
eprintln!("Usage: {} <postfix-log-file>", args[0]);
std::process::exit(1);
}
// Read the log file
let log_content = fs::read_to_string(&args[1])
.with_context(|| format!("Failed to read file: {}", args[1]))?;
// Parse the log file
let sessions = parser::parse_log_file(&log_content)
.context("Failed to parse log file")?;
if sessions.is_empty() {
println!("No SMTP sessions found in the log file.");
return Ok(());
}
// Setup terminal
let mut stdout = io::stdout();
execute!(stdout, EnterAlternateScreen, EnableMouseCapture).context("Failed to setup terminal")?;
enable_raw_mode().context("Failed to enable raw mode")?;
let backend = CrosstermBackend::new(stdout);
let mut terminal = Terminal::new(backend).context("Failed to create terminal")?;
// Create app and run it
let app = App::new(&sessions);
let res = run_app(&mut terminal, app);
// Restore terminal
let _ = disable_raw_mode();
let _ = execute!(
terminal.backend_mut(),
LeaveAlternateScreen,
DisableMouseCapture
);
let _ = terminal.show_cursor();
if let Err(err) = res {
eprintln!("Error: {:?}", err);
}
Ok(())
}

83
src/models.rs Normal file
View File

@@ -0,0 +1,83 @@
use chrono::NaiveDateTime;
#[derive(Debug, Clone)]
pub struct LogEntry {
pub timestamp: NaiveDateTime,
pub hostname: String,
pub process: String,
pub message: String,
}
#[derive(Debug, Clone)]
pub struct SMTPSession {
pub id: String,
pub entries: Vec<LogEntry>,
pub client: Option<String>,
pub from: Option<String>,
pub to: Vec<String>,
pub status: Option<String>,
pub start_time: Option<NaiveDateTime>,
pub end_time: Option<NaiveDateTime>,
}
impl SMTPSession {
pub fn new(id: &str) -> Self {
SMTPSession {
id: id.to_string(),
entries: Vec::new(),
client: None,
from: None,
to: Vec::new(),
status: None,
start_time: None,
end_time: None,
}
}
pub fn add_entry(&mut self, entry: LogEntry) {
if self.start_time.is_none() || entry.timestamp < self.start_time.unwrap() {
self.start_time = Some(entry.timestamp);
}
if self.end_time.is_none() || entry.timestamp > self.end_time.unwrap() {
self.end_time = Some(entry.timestamp);
}
self.entries.push(entry);
}
pub fn update_from_message(&mut self, message: &str) {
// Extract client information
if let Some(caps) = CLIENT_RE.captures(message) {
self.client = Some(caps[1].to_string());
}
// Extract from address
if let Some(caps) = FROM_RE.captures(message) {
self.from = Some(caps[1].to_string());
}
// Extract to address
if let Some(caps) = TO_RE.captures(message) {
if !self.to.contains(&caps[1].to_string()) {
self.to.push(caps[1].to_string());
}
}
// Extract status
if let Some(caps) = STATUS_RE.captures(message) {
self.status = Some(caps[1].to_string());
}
}
}
lazy_static::lazy_static! {
pub(crate) static ref SESSION_ID_RE: regex::Regex =
regex::Regex::new(r"\b([A-F0-9]+):\s").unwrap();
static ref CLIENT_RE: regex::Regex =
regex::Regex::new(r"client=([^,]+)").unwrap();
static ref FROM_RE: regex::Regex =
regex::Regex::new(r"from=<([^>]+)>").unwrap();
static ref TO_RE: regex::Regex =
regex::Regex::new(r"to=<([^>]+)>").unwrap();
static ref STATUS_RE: regex::Regex =
regex::Regex::new(r"status=([^\s]+)").unwrap();
}

65
src/parser.rs Normal file
View File

@@ -0,0 +1,65 @@
use crate::models::{LogEntry, SMTPSession};
use chrono::{Datelike, NaiveDateTime};
use regex::Regex;
use std::collections::HashMap;
lazy_static::lazy_static! {
static ref LOG_LINE_RE: Regex = Regex::new(
r"^(?P<month>\w+)\s+(?P<day>\d+)\s+(?P<time>\d+:\d+:\d+)\s+(?P<hostname>\S+)\s+(?P<process>\S+):\s+(?P<message>.*)$"
).unwrap();
}
pub fn parse_log_file(contents: &str) -> anyhow::Result<Vec<SMTPSession>> {
let mut sessions: HashMap<String, SMTPSession> = HashMap::new();
for line in contents.lines() {
if let Some(captures) = LOG_LINE_RE.captures(line) {
let month = &captures["month"];
let day = &captures["day"];
let time = &captures["time"];
let hostname = captures["hostname"].to_string();
let process = captures["process"].to_string();
let message = captures["message"].to_string();
// Create a timestamp string in the format that chrono can parse
let year = chrono::Local::now().year();
let timestamp_str = format!("{} {} {} {}", year, month, day, time);
let timestamp = match NaiveDateTime::parse_from_str(&timestamp_str, "%Y %b %d %H:%M:%S") {
Ok(ts) => ts,
Err(_) => continue, // Skip lines with invalid timestamps
};
let entry = LogEntry {
timestamp,
hostname,
process,
message: message.clone(),
};
// Extract session ID from the message
if let Some(id_caps) = crate::models::SESSION_ID_RE.captures(&message) {
let session_id = id_caps[1].to_string();
// Get or create the session
let session = sessions.entry(session_id.clone())
.or_insert_with(|| SMTPSession::new(&session_id));
// Add the entry to the session
session.add_entry(entry);
// Update session information from the message
session.update_from_message(&message);
}
}
}
// Convert the HashMap to a Vec and sort by start time (most recent first)
let mut sessions: Vec<SMTPSession> = sessions.into_iter().map(|(_, v)| v).collect();
sessions.sort_by(|a, b| {
let a_time = a.start_time.unwrap_or_else(|| chrono::DateTime::<chrono::Utc>::MIN_UTC.naive_local());
let b_time = b.start_time.unwrap_or_else(|| chrono::DateTime::<chrono::Utc>::MIN_UTC.naive_local());
b_time.cmp(&a_time) // Sort in descending order (newest first)
});
Ok(sessions)
}

310
src/ui.rs Normal file
View File

@@ -0,0 +1,310 @@
use crate::models::SMTPSession;
use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};
use ratatui::{
prelude::*,
widgets::*,
Frame,
};
use std::borrow::Cow;
pub struct App<'a> {
pub sessions: &'a [SMTPSession],
filtered_sessions: Vec<usize>,
pub selected_session: Option<usize>,
pub scroll: u16,
pub should_quit: bool,
filter_type: Option<FilterType>,
filter_text: String,
pub log_display_mode: LogDisplayMode,
}
#[derive(PartialEq)]
pub enum LogDisplayMode {
SingleLine,
MultiLine,
}
#[derive(PartialEq)]
enum FilterType {
From,
To,
}
impl<'a> App<'a> {
pub fn new(sessions: &'a [SMTPSession]) -> Self {
let filtered_sessions = (0..sessions.len()).collect();
App {
sessions,
filtered_sessions,
selected_session: if !sessions.is_empty() { Some(0) } else { None },
scroll: 0,
should_quit: false,
filter_type: None,
filter_text: String::new(),
log_display_mode: LogDisplayMode::SingleLine,
}
}
fn apply_filters(&mut self) {
self.filtered_sessions = (0..self.sessions.len())
.filter(|&i| {
let session = &self.sessions[i];
if self.filter_text.is_empty() {
return true;
}
match self.filter_type {
Some(FilterType::From) => session.from.as_ref()
.map_or(false, |from| from.contains(&self.filter_text)),
Some(FilterType::To) => session.to.iter()
.any(|to| to.contains(&self.filter_text)),
None => true,
}
})
.collect();
// Reset selection if current selection is no longer in filtered list
if let Some(selected) = self.selected_session {
if !self.filtered_sessions.contains(&selected) {
self.selected_session = if !self.filtered_sessions.is_empty() {
Some(self.filtered_sessions[0])
} else {
None
};
}
} else if !self.filtered_sessions.is_empty() {
self.selected_session = Some(self.filtered_sessions[0]);
}
}
pub fn on_tick(&mut self) {
// Update app state if needed
}
pub fn on_key(&mut self, key: KeyEvent) {
match key.code {
KeyCode::Char('q') => self.should_quit = true,
KeyCode::Char('c') if key.modifiers.intersects(KeyModifiers::CONTROL) => self.should_quit = true,
KeyCode::Down => {
if let Some(selected) = self.selected_session {
if selected < self.sessions.len().saturating_sub(1) {
self.selected_session = Some(selected + 1);
self.scroll = 0;
}
} else if !self.sessions.is_empty() {
self.selected_session = Some(0);
}
}
KeyCode::Up => {
if let Some(selected) = self.selected_session {
if selected > 0 {
self.selected_session = Some(selected - 1);
self.scroll = 0;
}
}
}
KeyCode::Char('j') => {
self.scroll = self.scroll.saturating_add(1);
}
KeyCode::Char('k') => {
self.scroll = self.scroll.saturating_sub(1);
}
KeyCode::Char('l') => {
self.log_display_mode = match self.log_display_mode {
LogDisplayMode::SingleLine => LogDisplayMode::MultiLine,
LogDisplayMode::MultiLine => LogDisplayMode::SingleLine,
};
}
KeyCode::Char('f') => {
self.filter_type = Some(FilterType::From);
self.filter_text.clear();
}
KeyCode::Char('t') => {
self.filter_type = Some(FilterType::To);
self.filter_text.clear();
}
KeyCode::Char('r') => {
self.filter_type = None;
self.filter_text.clear();
self.apply_filters();
}
KeyCode::Enter if self.filter_type.is_some() => {
self.apply_filters();
self.filter_type = None;
}
KeyCode::Char(c) if self.filter_type.is_some() => {
self.filter_text.push(c);
self.apply_filters();
}
KeyCode::Backspace if self.filter_type.is_some() => {
self.filter_text.pop();
self.apply_filters();
}
_ => {}
}
}
}
pub fn ui(f: &mut Frame, app: &App) {
let chunks = Layout::default()
.direction(Direction::Horizontal)
.constraints([Constraint::Percentage(40), Constraint::Percentage(60)].as_ref())
.split(f.size());
// Left panel - Session list
// Display filter status
let filter_status = if let Some(filter_type) = &app.filter_type {
let filter_label = match filter_type {
FilterType::From => "Filter from",
FilterType::To => "Filter to",
};
format!("{}: {}", filter_label, app.filter_text)
} else if !app.filtered_sessions.is_empty() {
format!("Filter active ({} sessions)", app.filtered_sessions.len())
} else {
String::from("No active filter")
};
let session_list: Vec<ListItem> = app
.filtered_sessions
.iter()
.map(|&i| {
let session = &app.sessions[i];
let is_selected = app.selected_session == Some(i);
let style = if is_selected {
Style::default().add_modifier(Modifier::BOLD)
} else {
Style::default()
};
let from = session.from.as_deref().unwrap_or("<unknown>");
let to_count = session.to.len();
let client = session.client.as_deref().unwrap_or("<unknown>");
let time = session.start_time
.map(|t| t.format("%Y-%m-%d %H:%M:%S").to_string())
.unwrap_or_else(|| "????-??-?? ??:??:??".to_string());
let line = format!("{} {}{} ({} recipient{})",
time, from, client, to_count, if to_count != 1 { "s" } else { "" });
ListItem::new(Line::from(Span::styled(line, style)))
})
.collect();
// Show filter status in the title
let sessions_title = format!("Sessions {}", filter_status);
let mut state = ListState::default();
state.select(app.selected_session);
let sessions_list = List::new(session_list)
.block(Block::default().borders(Borders::ALL).title(sessions_title))
.highlight_style(Style::default().bg(Color::DarkGray));
f.render_stateful_widget(sessions_list, chunks[0], &mut state);
// Right panel - Session details
let details = if let Some(selected_idx) = app.selected_session {
if let Some(selected) = app.sessions.get(selected_idx) {
let mut lines = vec![];
// Session header
lines.push(Line::from(vec![
Span::styled("Session ID: ", Style::default().add_modifier(Modifier::BOLD)),
Span::raw(&selected.id),
]));
if let Some(from) = &selected.from {
lines.push(Line::from(vec![
Span::styled("From: ", Style::default().add_modifier(Modifier::BOLD)),
Span::raw(from),
]));
}
if !selected.to.is_empty() {
let to_str = selected.to.join(", ");
lines.push(Line::from(vec![
Span::styled("To: ", Style::default().add_modifier(Modifier::BOLD)),
Span::raw(to_str),
]));
}
if let Some(client) = &selected.client {
lines.push(Line::from(vec![
Span::styled("Client: ", Style::default().add_modifier(Modifier::BOLD)),
Span::raw(client),
]));
}
if let Some(status) = &selected.status {
lines.push(Line::from(vec![
Span::styled("Status: ", Style::default().add_modifier(Modifier::BOLD)),
Span::styled(
status,
match status.as_str() {
"sent" => Style::default().fg(Color::Green),
"deferred" => Style::default().fg(Color::Yellow),
"bounced" => Style::default().fg(Color::Red),
_ => Style::default(),
},
),
]));
}
// Add a separator
lines.push(Line::from(""));
lines.push(Line::from(Span::styled("Log Entries:", Style::default().add_modifier(Modifier::BOLD))));
// Add log entries
let panel_width = chunks[1].width as usize;
for entry in &selected.entries {
let time = entry.timestamp.format("%H:%M:%S").to_string();
let log_line = format!("{} {}", time, entry.message);
match app.log_display_mode {
LogDisplayMode::SingleLine => {
// Truncate the line if it's too long
let max_len = panel_width.saturating_sub(3); // Leave room for "..."
if log_line.len() > max_len {
let truncated = log_line.chars().take(max_len).collect::<String>();
lines.push(Line::from(format!("{}...", truncated)));
} else {
lines.push(Line::from(log_line));
}
}
LogDisplayMode::MultiLine => {
// Split long lines into multiple lines
let mut remaining = log_line.as_str();
while !remaining.is_empty() {
let chunk: String = remaining.chars()
.take(panel_width)
.collect();
let chunk_len = chunk.len();
lines.push(Line::from(chunk));
remaining = &remaining[chunk_len..];
}
}
}
}
Paragraph::new(lines)
} else {
Paragraph::new("Invalid session selected")
}
} else if !app.filtered_sessions.is_empty() {
Paragraph::new("No matching sessions found")
} else {
Paragraph::new("No sessions available")
};
let display_mode = match app.log_display_mode {
LogDisplayMode::SingleLine => "Single-line",
LogDisplayMode::MultiLine => "Multi-line",
};
let details_block = Block::default()
.borders(Borders::ALL)
.title(format!("Session Details | Logs: {}", display_mode));
let details_content = details.block(details_block);
f.render_widget(details_content, chunks[1]);
}