用 Rust 与 egui 打造跨平台 SSH 工作台：终端、SFTP 与端口转发如何协同

键盘事件 -> 当前标签页 -> SSH 输入通道 -> 远端 Shell
远端输出 -> 后台读取任务 -> ANSI/VT100 解析器 -> 终端缓冲区 -> egui 绘制
SFTP 请求 -> 文件任务队列 -> 进度事件 -> egui 状态面板

# 查看远端识别到的终端类型和窗口尺寸
printf 'TERM=%s\n' "$TERM"
stty size

# 输出 256 色测试表
for i in $(seq 0 255); do
  printf '\033[48;5;%sm %3s \033[0m' "$i" "$i"
  if [ $(( (i + 1) % 8 )) -eq 0 ]; then
    printf '\n'
  fi
done

# 本地转发：访问本机 127.0.0.1:15432，流量经 SSH 到达远端可访问的数据库
ssh -N -L 127.0.0.1:15432:db.internal:5432 dev@example.com

# 远程转发：在 SSH 服务器的 127.0.0.1:18080 暴露本机的 3000 端口
ssh -N -R 127.0.0.1:18080:127.0.0.1:3000 dev@example.com

# SOCKS5 动态代理：应用可将 127.0.0.1:1080 配置为 SOCKS5 代理
ssh -N -D 127.0.0.1:1080 dev@example.com

# 检查本地监听端口
nc -vz 127.0.0.1 15432

# 通过 SOCKS5 代理发起请求；域名也交给代理端解析
curl --socks5-hostname 127.0.0.1:1080 https://example.com/

[package]
name = "ssh-tabs-demo"
version = "0.1.0"
edition = "2021"

[dependencies]
eframe = "0.29"

#[derive(Debug)]
struct Session {
    title: String,
    host: String,
    status: String,
}

struct SshApp {
    sessions: Vec<Session>,
    active: usize,
    next_id: usize,
}

impl Default for SshApp {
    fn default() -> Self {
        Self {
            sessions: vec![Session {
                title: "server-1".into(),
                host: "dev@example.com".into(),
                status: "Disconnected".into(),
            }],
            active: 0,
            next_id: 2,
        }
    }
}

impl eframe::App for SshApp {
    fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
        egui::TopBottomPanel::top("tabs").show(ctx, |ui| {
            ui.horizontal(|ui| {
                for (index, session) in self.sessions.iter().enumerate() {
                    if ui
                        .selectable_label(self.active == index, &session.title)
                        .clicked()
                    {
                        self.active = index;
                    }
                }

                if ui.button("+").clicked() {
                    self.sessions.push(Session {
                        title: format!("server-{}", self.next_id),
                        host: "user@host".into(),
                        status: "Disconnected".into(),
                    });
                    self.active = self.sessions.len() - 1;
                    self.next_id += 1;
                }
            });
        });

        egui::CentralPanel::default().show(ctx, |ui| {
            if let Some(session) = self.sessions.get_mut(self.active) {
                ui.heading(&session.title);
                ui.horizontal(|ui| {
                    ui.label("Host:");
                    ui.text_edit_singleline(&mut session.host);
                });
                ui.label(format!("Status: {}", session.status));

                if ui.button("Simulate connect").clicked() {
                    session.status = "Connected".into();
                }
            }
        });
    }
}

fn main() -> eframe::Result<()> {
    let options = eframe::NativeOptions::default();
    eframe::run_native(
        "SSH Tabs Demo",
        options,
        Box::new(|_cc| Ok(Box::new(SshApp::default()))),
    )
}

cargo run