3575ab7e66
Performance optimization Phase 1 implementation: - Add aes-gcm crate dependency (v0.10) - Add CipherMode enum (AesCtr vs AesGcm) - Modify KEX algorithm negotiation: add aes256-gcm@openssh.com - Dynamic cipher mode setting based on KEX result - Fix HMAC trait conflict with fully-qualified syntax Strategy: Conservative approach - Support AES-GCM algorithm negotiation (OpenSSH compatible) - Dynamic cipher mode setting - AES-CTR fallback preserved (packet processing unchanged) Next steps: - Test OpenSSH client AES-GCM negotiation - Implement AES-GCM packet processing if needed - Continue to Phase 4 (parallel encryption)
714 lines
29 KiB
Rust
714 lines
29 KiB
Rust
// SSH服务器完整实现（Phase 1-7集成版 + Phase 13端口转发）
|
||
// 参考OpenSSH sshd.c: complete SSH/SFTP flow + port forwarding
|
||
|
||
use crate::provider::pg::PgProvider;
|
||
use crate::provider::sqlite::SqliteProvider;
|
||
use crate::provider::DataProvider;
|
||
use crate::ssh_server::auth::{AuthHandler, AuthResult};
|
||
use crate::ssh_server::channel::ChannelManager;
|
||
use crate::ssh_server::cipher::{EncryptedPacket, EncryptionContext};
|
||
use crate::ssh_server::kex::{KexProposal, KexResult};
|
||
use crate::ssh_server::kex_complete::KexState;
|
||
use crate::ssh_server::packet::{PacketType, SshPacket};
|
||
use crate::ssh_server::port_forward::PortForwardManager;
|
||
use crate::ssh_server::ssh_security_config::SshSecurityConfig;
|
||
use crate::ssh_server::upload_hook::UploadHook;
|
||
use crate::ssh_server::version::VersionExchange;
|
||
use anyhow::{anyhow, Result};
|
||
use log::{error, info, warn};
|
||
use std::io::{Read, Write};
|
||
use std::net::{TcpListener, TcpStream};
|
||
use std::path::PathBuf;
|
||
use std::sync::{Arc, Mutex};
|
||
use std::thread;
|
||
|
||
pub struct SshServerConfig {
|
||
pub port: u16,
|
||
pub bind_address: String,
|
||
pub security_config: SshSecurityConfig,
|
||
pub pg_conn: Option<String>,
|
||
pub upload_hook_config: crate::config::UploadHookSection,
|
||
}
|
||
|
||
impl Default for SshServerConfig {
|
||
fn default() -> Self {
|
||
Self {
|
||
port: 2024,
|
||
bind_address: "127.0.0.1".to_string(),
|
||
security_config: SshSecurityConfig::enterprise_default(),
|
||
pg_conn: None,
|
||
upload_hook_config: crate::config::UploadHookSection::default(),
|
||
}
|
||
}
|
||
}
|
||
|
||
impl SshServerConfig {
|
||
/// 从配置文件加载（Phase 13.1）
|
||
pub fn load_from_file(path: &str) -> Result<Self> {
|
||
let config = SshSecurityConfig::load_from_file(path)?;
|
||
Ok(Self {
|
||
port: 2024,
|
||
bind_address: "127.0.0.1".to_string(),
|
||
security_config: config,
|
||
pg_conn: None,
|
||
upload_hook_config: crate::config::UploadHookSection::default(),
|
||
})
|
||
}
|
||
}
|
||
|
||
/// SSH服务器主结构（Phase 1-13完整版）
|
||
pub struct SshServer {
|
||
config: SshServerConfig,
|
||
security_config: Arc<Mutex<SshSecurityConfig>>, // Phase 13.1: 共享安全配置
|
||
}
|
||
|
||
impl SshServer {
|
||
pub fn new(config: SshServerConfig) -> Self {
|
||
let security_config = Arc::new(Mutex::new(config.security_config.clone())); // Phase 13.1: 先clone
|
||
Self {
|
||
config,
|
||
security_config, // Phase 13.1
|
||
}
|
||
}
|
||
|
||
pub fn run(&self) -> Result<()> {
|
||
let bind_addr = format!("{}:{}", self.config.bind_address, self.config.port);
|
||
let listener = TcpListener::bind(&bind_addr)?;
|
||
|
||
info!("MarkBaseSSH server listening on {}", bind_addr);
|
||
info!("Implementation: Complete SSH/SFTP + Port Forwarding (Phase 1-13)");
|
||
info!(
|
||
"Security config: GatewayPorts={}, PermitOpen={:?}, MaxSessions={}",
|
||
self.config.security_config.gateway_ports,
|
||
self.config.security_config.permit_open,
|
||
self.config.security_config.max_sessions
|
||
);
|
||
|
||
let security_config = self.security_config.clone();
|
||
let pg_conn = self.config.pg_conn.clone();
|
||
let upload_hook_config = self.config.upload_hook_config.clone();
|
||
|
||
for stream in listener.incoming() {
|
||
match stream {
|
||
Ok(stream) => {
|
||
let client_addr = stream.peer_addr()?;
|
||
info!("New SSH connection from {}", client_addr);
|
||
|
||
let security_config_clone = security_config.clone();
|
||
let pg_conn_clone = pg_conn.clone();
|
||
let upload_hook_config_clone = upload_hook_config.clone();
|
||
|
||
thread::spawn(move || {
|
||
if let Err(e) = handle_connection_complete(
|
||
stream,
|
||
security_config_clone,
|
||
pg_conn_clone,
|
||
upload_hook_config_clone,
|
||
)
|
||
{
|
||
error!("Connection error: {}", e);
|
||
}
|
||
});
|
||
}
|
||
Err(e) => {
|
||
warn!("Failed to accept connection: {}", e);
|
||
}
|
||
}
|
||
}
|
||
|
||
Ok(())
|
||
}
|
||
}
|
||
|
||
/// 处理完整SSH连接（Phase 1-13完整流程）
|
||
fn handle_connection_complete(
|
||
stream: TcpStream,
|
||
security_config: Arc<Mutex<SshSecurityConfig>>,
|
||
pg_conn: Option<String>,
|
||
upload_hook_config: crate::config::UploadHookSection,
|
||
) -> Result<()> {
|
||
info!("Handling client connection (Phase 1-13 complete flow with port forwarding)");
|
||
|
||
// Phase 13.1: 增加活动会话数
|
||
{
|
||
let mut security = security_config.lock().unwrap();
|
||
security.increment_sessions()?;
|
||
}
|
||
|
||
let mut stream = stream;
|
||
|
||
// Phase 1: 版本交换
|
||
let client_version = VersionExchange::exchange(&mut stream)?;
|
||
info!(
|
||
"Version exchange: client={}, server=SSH-2.0-MarkBaseSSH_1.0",
|
||
client_version
|
||
);
|
||
|
||
// Phase 2: 箋法协商
|
||
let (kex_result, server_kexinit, client_kexinit) =
|
||
perform_kex_negotiation_complete(&mut stream)?;
|
||
info!(
|
||
"KEX negotiation: KEX={}, Cipher={}",
|
||
kex_result.kex_algorithm, kex_result.encryption_ctos
|
||
);
|
||
|
||
// Phase 3: 密钥交换完整流程
|
||
let mut encryption_ctx = perform_complete_kex_exchange(
|
||
&mut stream,
|
||
client_version.clone(),
|
||
kex_result,
|
||
server_kexinit,
|
||
client_kexinit,
|
||
)?;
|
||
info!("Key exchange completed, encryption channel ready");
|
||
|
||
// Phase 5: SSH认证（SFTPGo兼容 — PostgreSQL或SQLite）
|
||
let provider: Box<dyn DataProvider> = if let Some(ref conn_str) = pg_conn {
|
||
info!(
|
||
"Using PostgreSQL auth provider (SFTPGo-compatible): {}",
|
||
conn_str
|
||
);
|
||
Box::new(
|
||
PgProvider::new(conn_str).map_err(|e| anyhow!("Failed to init PgProvider: {}", e))?,
|
||
)
|
||
} else {
|
||
info!("Using SQLite auth provider");
|
||
Box::new(
|
||
SqliteProvider::new("data/auth.sqlite")
|
||
.map_err(|e| anyhow!("Failed to init SqliteProvider: {}", e))?,
|
||
)
|
||
};
|
||
let mut auth_handler = AuthHandler::new(provider);
|
||
let auth_user = perform_ssh_auth(&mut stream, &mut auth_handler, &mut encryption_ctx)?;
|
||
info!("SSH authentication succeeded: user={}", auth_user.username);
|
||
|
||
let upload_hook = if upload_hook_config.enabled {
|
||
Some(Arc::new(UploadHook::new(
|
||
upload_hook_config.enabled,
|
||
PathBuf::from(&upload_hook_config.video_probe_path),
|
||
PathBuf::from(&upload_hook_config.video_register_cli),
|
||
PathBuf::from(&upload_hook_config.video_register_dir),
|
||
upload_hook_config.video_extensions.clone(),
|
||
)))
|
||
} else {
|
||
None
|
||
};
|
||
|
||
let mut channel_manager = ChannelManager::new(
|
||
auth_user.home_dir.clone(),
|
||
upload_hook,
|
||
auth_user.username.clone(),
|
||
);
|
||
|
||
// Phase 13: PortForwardManager初始化
|
||
let mut port_forward_manager = PortForwardManager::new();
|
||
|
||
// Phase 6-13: SSH服务循环（处理channel请求 + 端口转发）
|
||
let security_config_clone = security_config.clone(); // Phase 13.1: clone for service loop
|
||
handle_ssh_service_loop(
|
||
&mut stream,
|
||
&mut channel_manager,
|
||
&mut encryption_ctx,
|
||
&mut port_forward_manager,
|
||
security_config_clone,
|
||
)?;
|
||
|
||
info!("SSH session completed successfully");
|
||
|
||
// Phase 13.1: 减少活动会话数
|
||
{
|
||
let mut security = security_config.lock().unwrap();
|
||
security.decrement_sessions();
|
||
}
|
||
|
||
Ok(())
|
||
}
|
||
|
||
/// 完整算法协商（返回KEXINIT payloads）
|
||
fn perform_kex_negotiation_complete(
|
||
stream: &mut TcpStream,
|
||
) -> Result<(KexResult, SshPacket, SshPacket)> {
|
||
info!("Starting complete KEX negotiation");
|
||
|
||
// 1. 发送服务器KEXINIT
|
||
let server_proposal = KexProposal::server_default();
|
||
let server_kexinit = server_proposal.to_kexinit_packet()?;
|
||
server_kexinit.write(stream)?;
|
||
|
||
info!(
|
||
"Sent server KEXINIT (payload size: {} bytes)",
|
||
server_kexinit.payload.len()
|
||
);
|
||
|
||
// 2. 接收客户端KEXINIT
|
||
let client_kexinit = SshPacket::read(stream)?;
|
||
let client_proposal = KexProposal::from_kexinit_packet(&client_kexinit)?;
|
||
|
||
info!(
|
||
"Received client KEXINIT (payload size: {} bytes)",
|
||
client_kexinit.payload.len()
|
||
);
|
||
|
||
// 3. 算法匹配
|
||
let kex_result = KexResult::choose_algorithms(&server_proposal, &client_proposal)?;
|
||
|
||
Ok((kex_result, server_kexinit, client_kexinit))
|
||
}
|
||
|
||
/// 完整密钥交换流程（Phase 3核心）
|
||
fn perform_complete_kex_exchange(
|
||
stream: &mut TcpStream,
|
||
client_version: String,
|
||
kex_result: KexResult,
|
||
server_kexinit: SshPacket,
|
||
client_kexinit: SshPacket,
|
||
) -> Result<EncryptionContext> {
|
||
info!("Starting complete key exchange flow");
|
||
|
||
let mut kex_state = KexState::new(
|
||
client_version,
|
||
"SSH-2.0-MarkBaseSSH_1.0".to_string(),
|
||
kex_result.clone(), // Phase 1: clone kex_result for cipher mode setting
|
||
)?;
|
||
|
||
kex_state.save_kexinit_payloads(&client_kexinit, &server_kexinit);
|
||
|
||
let kexdh_init = SshPacket::read(stream)?;
|
||
info!("Received SSH_MSG_KEX_ECDH_INIT");
|
||
|
||
let kexdh_reply = kex_state.exchange_handler.handle_kexdh_init(
|
||
&kexdh_init,
|
||
&kex_state.client_version,
|
||
&kex_state.server_version,
|
||
&kex_state.client_kexinit_payload,
|
||
&kex_state.server_kexinit_payload,
|
||
)?;
|
||
kexdh_reply.write(stream)?;
|
||
info!("Sent SSH_MSG_KEX_ECDH_REPLY");
|
||
|
||
// Strict KEX: Wait for client NEWKEYS first (OpenSSH 10.2 requirement)
|
||
let client_newkeys = SshPacket::read(stream)?;
|
||
kex_state.handle_newkeys(&client_newkeys)?;
|
||
info!("Received SSH_MSG_NEWKEYS from client");
|
||
|
||
// Now send server NEWKEYS
|
||
let newkeys_packet = KexState::send_newkeys()?;
|
||
newkeys_packet.write(stream)?;
|
||
kex_state.newkeys_sent = true;
|
||
info!("Sent SSH_MSG_NEWKEYS from server");
|
||
|
||
if kex_state.is_encryption_ready() {
|
||
info!("Encryption channel established successfully");
|
||
} else {
|
||
return Err(anyhow::anyhow!("Encryption channel not ready"));
|
||
}
|
||
|
||
let session_keys = kex_state.exchange_handler.compute_session_keys()?;
|
||
let mut encryption_ctx = EncryptionContext::from_session_keys(&session_keys);
|
||
|
||
// Phase 1: 根据 KEX 协商结果设置加密模式（AES-GCM vs AES-CTR）
|
||
let encryption_algorithm = &kex_result.encryption_stoc;
|
||
info!("KEX negotiated encryption algorithm: {}", encryption_algorithm);
|
||
|
||
use crate::ssh_server::cipher::CipherMode;
|
||
if encryption_algorithm.contains("gcm") {
|
||
info!("Setting cipher mode to AES-GCM (AEAD)");
|
||
encryption_ctx.set_cipher_mode(CipherMode::AesGcm)?;
|
||
} else {
|
||
info!("Setting cipher mode to AES-CTR (MtE)");
|
||
encryption_ctx.set_cipher_mode(CipherMode::AesCtr)?;
|
||
}
|
||
|
||
Ok(encryption_ctx)
|
||
}
|
||
|
||
/// SSH认证流程（Phase 5）
|
||
pub struct AuthUser {
|
||
pub username: String,
|
||
pub home_dir: PathBuf,
|
||
}
|
||
|
||
fn perform_ssh_auth(
|
||
stream: &mut TcpStream,
|
||
auth_handler: &mut AuthHandler,
|
||
encryption_ctx: &mut EncryptionContext,
|
||
) -> Result<AuthUser> {
|
||
info!("Starting SSH authentication");
|
||
info!(
|
||
"Encryption context: key_ctos_len={}, key_stoc_len={}, iv_ctos_len={}, iv_stoc_len={}",
|
||
encryption_ctx.encryption_key_ctos.len(),
|
||
encryption_ctx.encryption_key_stoc.len(),
|
||
encryption_ctx.iv_ctos.len(),
|
||
encryption_ctx.iv_stoc.len()
|
||
);
|
||
|
||
// OpenSSH strict KEX: SSH_MSG_EXT_INFO may be sent before SSH_MSG_SERVICE_REQUEST
|
||
let mut encrypted_request = EncryptedPacket::read(stream, encryption_ctx, true)?;
|
||
let payload = encrypted_request.payload();
|
||
|
||
if payload[0] == PacketType::SSH_MSG_EXT_INFO as u8 {
|
||
info!("Received SSH_MSG_EXT_INFO, reading next packet");
|
||
encrypted_request = EncryptedPacket::read(stream, encryption_ctx, true)?;
|
||
}
|
||
|
||
let payload = encrypted_request.payload();
|
||
info!("Received packet type: {}", payload[0]);
|
||
|
||
if payload[0] != PacketType::SSH_MSG_SERVICE_REQUEST as u8 {
|
||
return Err(anyhow!(
|
||
"Expected SSH_MSG_SERVICE_REQUEST, got type {}",
|
||
payload[0]
|
||
));
|
||
}
|
||
|
||
use byteorder::{BigEndian, ReadBytesExt, WriteBytesExt};
|
||
let mut cursor = std::io::Cursor::new(&payload[1..]);
|
||
let service_name_len = cursor.read_u32::<BigEndian>()?;
|
||
let mut service_name = vec![0u8; service_name_len as usize];
|
||
cursor.read_exact(&mut service_name)?;
|
||
let service_name_str = String::from_utf8_lossy(&service_name);
|
||
|
||
if service_name_str != "ssh-userauth" {
|
||
return Err(anyhow!("Unsupported service: {}", service_name_str));
|
||
}
|
||
|
||
let mut service_accept_payload = Vec::new();
|
||
service_accept_payload.write_u8(PacketType::SSH_MSG_SERVICE_ACCEPT as u8)?;
|
||
service_accept_payload.write_u32::<BigEndian>(12)?; // "ssh-userauth" length is 12, not 14!
|
||
service_accept_payload.write_all("ssh-userauth".as_bytes())?;
|
||
|
||
let encrypted_accept = EncryptedPacket::new(&service_accept_payload, encryption_ctx, true)?;
|
||
encrypted_accept.write(stream)?;
|
||
info!("Sent encrypted SSH_MSG_SERVICE_ACCEPT");
|
||
|
||
let session_id = encryption_ctx.session_id.clone();
|
||
|
||
loop {
|
||
let auth_packet = EncryptedPacket::read(stream, encryption_ctx, true)?; // Reading from client, use cipher_ctos
|
||
let auth_payload = auth_packet.payload();
|
||
info!("Received encrypted SSH_MSG_USERAUTH_REQUEST");
|
||
|
||
let auth_request = SshPacket::new(auth_payload.to_vec());
|
||
|
||
match auth_handler.handle_userauth_request(&auth_request, &session_id)? {
|
||
AuthResult::Success => {
|
||
let success_payload = vec![PacketType::SSH_MSG_USERAUTH_SUCCESS as u8];
|
||
let encrypted_success =
|
||
EncryptedPacket::new(&success_payload, encryption_ctx, true)?;
|
||
encrypted_success.write(stream)?;
|
||
info!("Sent encrypted SSH_MSG_USERAUTH_SUCCESS");
|
||
|
||
// Extract username from auth request
|
||
let user = extract_username_from_auth_request(&auth_request)
|
||
.unwrap_or_else(|_| "unknown".to_string());
|
||
let home_dir = auth_handler
|
||
.get_home_dir(&user)
|
||
.ok()
|
||
.flatten()
|
||
.map(PathBuf::from)
|
||
.unwrap_or_else(|| PathBuf::from("/Users/accusys/markbase"));
|
||
info!("Auth success: user={}, home_dir={:?}", user, home_dir);
|
||
return Ok(AuthUser {
|
||
username: user,
|
||
home_dir,
|
||
});
|
||
}
|
||
AuthResult::Failure(message) => {
|
||
// message包含可用的认证方法列表（如"password,publickey"）
|
||
let mut failure_payload = Vec::new();
|
||
failure_payload.write_u8(PacketType::SSH_MSG_USERAUTH_FAILURE as u8)?;
|
||
failure_payload.write_u32::<BigEndian>(message.len() as u32)?;
|
||
failure_payload.write_all(message.as_bytes())?;
|
||
failure_payload.write_u8(0)?; // partial_success = false
|
||
|
||
let encrypted_failure =
|
||
EncryptedPacket::new(&failure_payload, encryption_ctx, true)?;
|
||
encrypted_failure.write(stream)?;
|
||
warn!("Sent encrypted SSH_MSG_USERAUTH_FAILURE: {}", message);
|
||
}
|
||
AuthResult::PartialSuccess => {
|
||
warn!("Partial success auth not implemented");
|
||
continue;
|
||
}
|
||
AuthResult::PublicKeyOk(algorithm, public_key_blob) => {
|
||
// SSH_MSG_USERAUTH_PK_OK：public key acceptable
|
||
info!("Public key acceptable, sending USERAUTH_PK_OK");
|
||
|
||
let mut pk_ok_payload = Vec::new();
|
||
pk_ok_payload.write_u8(PacketType::SSH_MSG_USERAUTH_PK_OK as u8)?;
|
||
|
||
// algorithm (SSH string)
|
||
pk_ok_payload.write_u32::<BigEndian>(algorithm.len() as u32)?;
|
||
pk_ok_payload.write_all(algorithm.as_bytes())?;
|
||
|
||
// public key blob (SSH string)
|
||
pk_ok_payload.write_u32::<BigEndian>(public_key_blob.len() as u32)?;
|
||
pk_ok_payload.write_all(&public_key_blob)?;
|
||
|
||
let encrypted_pk_ok = EncryptedPacket::new(&pk_ok_payload, encryption_ctx, true)?;
|
||
encrypted_pk_ok.write(stream)?;
|
||
info!("Sent SSH_MSG_USERAUTH_PK_OK");
|
||
|
||
continue; // Wait for signed request
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/// SSH服务循环（Phase 14.2: OpenSSH统一poll + child状态检测版）
|
||
/// ⭐⭐⭐⭐⭐ 关键改进：单次poll同时监听client + stdout + stderr + child状态
|
||
/// 参考：OpenSSH session.c: do_exec_no_pty() + channel.c: channel_handle_fd()
|
||
fn handle_ssh_service_loop(
|
||
stream: &mut TcpStream,
|
||
channel_manager: &mut ChannelManager,
|
||
encryption_ctx: &mut EncryptionContext,
|
||
port_forward_manager: &mut PortForwardManager, // Phase 13
|
||
security_config: Arc<Mutex<SshSecurityConfig>>, // Phase 13.1
|
||
) -> Result<()> {
|
||
info!("Starting SSH service loop (Phase 14.2: unified poll + child status)");
|
||
|
||
loop {
|
||
// ⭐⭐⭐⭐⭐ Phase 14.2: 统一poll + child状态检测
|
||
// 返回三元组：(stdout_packets, client_has_data, child_exited)
|
||
let (stdout_packets, client_has_data, child_exited) =
|
||
channel_manager.poll_exec_stdout_and_client(stream)?;
|
||
|
||
// 1. 发送stdout/stderr数据（如果有）
|
||
if let Some(packets) = stdout_packets {
|
||
for packet in packets {
|
||
let encrypted_packet = EncryptedPacket::new(&packet.payload, encryption_ctx, true)?;
|
||
encrypted_packet.write(stream)?;
|
||
info!("Sent stdout/stderr data (Phase 14.2)");
|
||
}
|
||
}
|
||
|
||
// 2. 处理child exited（发送EOF + CLOSE）
|
||
if child_exited {
|
||
info!("Child process exited, sending SSH_MSG_CHANNEL_EOF + CLOSE");
|
||
|
||
// ⭐⭐⭐⭐⭐ Phase 14.2: 使用ChannelManager.handle_child_exited()
|
||
let exit_packets = channel_manager.handle_child_exited()?;
|
||
for packet in exit_packets {
|
||
let encrypted_packet = EncryptedPacket::new(&packet.payload, encryption_ctx, true)?;
|
||
encrypted_packet.write(stream)?;
|
||
}
|
||
|
||
// 继续处理client数据（可能还有其他请求）
|
||
}
|
||
|
||
// 3. 处理client数据（如果有）
|
||
if !client_has_data {
|
||
// client没有数据，继续下一轮循环
|
||
continue;
|
||
}
|
||
|
||
// client有数据，读取并处理
|
||
let encrypted_packet = EncryptedPacket::read(stream, encryption_ctx, true)?;
|
||
let packet = SshPacket::new(encrypted_packet.payload().to_vec());
|
||
|
||
match packet.payload.first() {
|
||
// Phase 13: SSH_MSG_GLOBAL_REQUEST处理（端口转发）
|
||
Some(&pt) if pt == PacketType::SSH_MSG_GLOBAL_REQUEST as u8 => {
|
||
info!("Received SSH_MSG_GLOBAL_REQUEST (port forwarding)");
|
||
|
||
// Phase 13.1: 安全配置验证
|
||
let security = security_config.lock().unwrap();
|
||
if !security.allow_tcp_forwarding {
|
||
warn!("TCP forwarding disabled by security config");
|
||
let failure_packet = vec![PacketType::SSH_MSG_REQUEST_FAILURE as u8];
|
||
let encrypted_failure =
|
||
EncryptedPacket::new(&failure_packet, encryption_ctx, true)?;
|
||
encrypted_failure.write(stream)?;
|
||
info!("Sent SSH_MSG_REQUEST_FAILURE (TCP forwarding disabled)");
|
||
continue;
|
||
}
|
||
|
||
// Phase 13.2: 调用PortForwardManager处理（传递security_config）
|
||
let (success, response) =
|
||
port_forward_manager.handle_global_request(&packet.payload, &security)?;
|
||
drop(security); // 释放锁
|
||
|
||
if success {
|
||
if let Some(response_data) = response {
|
||
let encrypted_response =
|
||
EncryptedPacket::new(&response_data, encryption_ctx, true)?;
|
||
encrypted_response.write(stream)?;
|
||
info!("Sent SSH_MSG_REQUEST_SUCCESS (tcpip-forward accepted)");
|
||
} else {
|
||
// 无响应数据时，发送简单的SUCCESS
|
||
let success_packet = vec![PacketType::SSH_MSG_REQUEST_SUCCESS as u8];
|
||
let encrypted_success =
|
||
EncryptedPacket::new(&success_packet, encryption_ctx, true)?;
|
||
encrypted_success.write(stream)?;
|
||
info!("Sent SSH_MSG_REQUEST_SUCCESS");
|
||
}
|
||
} else {
|
||
let failure_packet = vec![PacketType::SSH_MSG_REQUEST_FAILURE as u8];
|
||
let encrypted_failure =
|
||
EncryptedPacket::new(&failure_packet, encryption_ctx, true)?;
|
||
encrypted_failure.write(stream)?;
|
||
info!("Sent SSH_MSG_REQUEST_FAILURE (tcpip-forward rejected)");
|
||
}
|
||
}
|
||
|
||
Some(&pt) if pt == PacketType::SSH_MSG_CHANNEL_OPEN as u8 => {
|
||
info!("Received SSH_MSG_CHANNEL_OPEN");
|
||
|
||
// Phase 13.3: 获取security_config并传递给handle_channel_open
|
||
let security = security_config.lock().unwrap();
|
||
let response = channel_manager.handle_channel_open(&packet, Some(&security))?;
|
||
drop(security); // 释放锁
|
||
|
||
let encrypted_response =
|
||
EncryptedPacket::new(&response.payload, encryption_ctx, true)?;
|
||
encrypted_response.write(stream)?;
|
||
info!("Sent SSH_MSG_CHANNEL_OPEN_CONFIRMATION");
|
||
}
|
||
Some(&pt) if pt == PacketType::SSH_MSG_CHANNEL_REQUEST as u8 => {
|
||
info!("Received SSH_MSG_CHANNEL_REQUEST");
|
||
if let Some(response) = channel_manager.handle_channel_request(&packet)? {
|
||
let encrypted_response =
|
||
EncryptedPacket::new(&response.payload, encryption_ctx, true)?;
|
||
encrypted_response.write(stream)?;
|
||
|
||
// ⭐⭐⭐⭐⭐ Phase 14.5修复：区分普通命令和交互式进程
|
||
// 检查是否有 exec_process（交互式进程如 rsync）
|
||
let has_exec_process = channel_manager.has_exec_process();
|
||
|
||
if has_exec_process {
|
||
info!("⭐⭐⭐⭐⭐ [INTERACTIVE_PROCESS] Detected exec_process (rsync/SCP), skipping immediate EOF");
|
||
// 对于交互式进程，只发送 SUCCESS，等待 poll 循环处理数据流
|
||
// 不立即发送 EOF + CLOSE
|
||
} else {
|
||
// Phase 6: 普通命令执行，检查是否有命令输出需要发送
|
||
if let Some(channel_id) = channel_manager.get_channel_with_output() {
|
||
if let Some(output) = channel_manager.get_channel_output(channel_id) {
|
||
// 发送命令输出（SSH_MSG_CHANNEL_DATA）
|
||
let data_packet =
|
||
channel_manager.build_channel_data(channel_id, &output)?;
|
||
let encrypted_data = EncryptedPacket::new(
|
||
&data_packet.payload,
|
||
encryption_ctx,
|
||
true,
|
||
)?;
|
||
encrypted_data.write(stream)?;
|
||
info!("Sent command output ({} bytes)", output.len());
|
||
|
||
// 发送SSH_MSG_CHANNEL_EOF
|
||
let eof_packet = channel_manager.build_channel_eof(channel_id)?;
|
||
let encrypted_eof = EncryptedPacket::new(
|
||
&eof_packet.payload,
|
||
encryption_ctx,
|
||
true,
|
||
)?;
|
||
encrypted_eof.write(stream)?;
|
||
info!("Sent SSH_MSG_CHANNEL_EOF");
|
||
|
||
// 发送SSH_MSG_CHANNEL_CLOSE
|
||
let close_packet =
|
||
channel_manager.build_channel_close(channel_id)?;
|
||
let encrypted_close = EncryptedPacket::new(
|
||
&close_packet.payload,
|
||
encryption_ctx,
|
||
true,
|
||
)?;
|
||
encrypted_close.write(stream)?;
|
||
info!("Sent SSH_MSG_CHANNEL_CLOSE");
|
||
|
||
// 移除channel
|
||
channel_manager.remove_channel(channel_id);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
Some(&pt) if pt == PacketType::SSH_MSG_CHANNEL_DATA as u8 => {
|
||
info!("Received SSH_MSG_CHANNEL_DATA");
|
||
if let Some(response) = channel_manager.handle_channel_data(&packet)? {
|
||
// Phase 7: SFTP响应通过CHANNEL_DATA返回
|
||
let encrypted_response =
|
||
EncryptedPacket::new(&response.payload, encryption_ctx, true)?;
|
||
encrypted_response.write(stream)?;
|
||
info!("Sent SSH_MSG_CHANNEL_DATA (SFTP response)");
|
||
}
|
||
|
||
// ⭐⭐⭐⭐⭐ Phase 15.1: Drain pending packets (e.g. WINDOW_ADJUST + delayed SFTP response)
|
||
while let Some(pending) = channel_manager.pending_packets.pop_front() {
|
||
let encrypted_pending =
|
||
EncryptedPacket::new(&pending.payload, encryption_ctx, true)?;
|
||
encrypted_pending.write(stream)?;
|
||
info!(
|
||
"Sent pending packet (type {})",
|
||
pending.payload.first().unwrap_or(&0)
|
||
);
|
||
}
|
||
}
|
||
Some(&pt) if pt == PacketType::SSH_MSG_CHANNEL_CLOSE as u8 => {
|
||
info!("Received SSH_MSG_CHANNEL_CLOSE");
|
||
if let Some(response) = channel_manager.handle_channel_close(&packet)? {
|
||
let encrypted_response =
|
||
EncryptedPacket::new(&response.payload, encryption_ctx, true)?;
|
||
encrypted_response.write(stream)?;
|
||
}
|
||
break;
|
||
}
|
||
Some(&pt) if pt == PacketType::SSH_MSG_CHANNEL_EOF as u8 => {
|
||
info!("Received SSH_MSG_CHANNEL_EOF");
|
||
// Phase 17: EOF means client won't send more data → close child stdin
|
||
// (Essential for SCP upload where scp -t waits for EOF on stdin)
|
||
channel_manager.close_child_stdin();
|
||
}
|
||
Some(&pt) if pt == PacketType::SSH_MSG_DISCONNECT as u8 => {
|
||
info!("Received SSH_MSG_DISCONNECT");
|
||
break;
|
||
}
|
||
Some(&pt) if pt == PacketType::SSH_MSG_CHANNEL_WINDOW_ADJUST as u8 => {
|
||
let payload = &packet.payload;
|
||
if payload.len() >= 9 {
|
||
// Format: uint32 recipient_channel || uint32 bytes_to_add
|
||
let recipient_channel =
|
||
u32::from_be_bytes([payload[1], payload[2], payload[3], payload[4]]);
|
||
let bytes_to_add =
|
||
u32::from_be_bytes([payload[5], payload[6], payload[7], payload[8]]);
|
||
channel_manager.adjust_remote_window(recipient_channel, bytes_to_add);
|
||
}
|
||
}
|
||
_ => {
|
||
warn!("Unknown packet type: {:?}", packet.payload.first());
|
||
}
|
||
}
|
||
}
|
||
|
||
Ok(())
|
||
}
|
||
|
||
/// 从SSH_MSG_USERAUTH_REQUEST payload中提取用户名
|
||
fn extract_username_from_auth_request(
|
||
packet: &crate::ssh_server::packet::SshPacket,
|
||
) -> Result<String> {
|
||
let payload = &packet.payload;
|
||
if payload.len() < 5 {
|
||
return Err(anyhow!("Auth request too short"));
|
||
}
|
||
let name_len = u32::from_be_bytes([payload[1], payload[2], payload[3], payload[4]]) as usize;
|
||
if payload.len() < 5 + name_len {
|
||
return Err(anyhow!("Auth request truncated"));
|
||
}
|
||
let username = String::from_utf8_lossy(&payload[5..5 + name_len]).to_string();
|
||
Ok(username)
|
||
}
|
||
|
||
/// SSH服务器CLI入口
|
||
pub fn run_ssh_server(port: Option<u16>, pg_conn: Option<&str>) -> Result<()> {
|
||
let config = SshServerConfig {
|
||
port: port.unwrap_or(2024),
|
||
bind_address: "127.0.0.1".to_string(),
|
||
security_config: SshSecurityConfig::enterprise_default(),
|
||
pg_conn: pg_conn.map(|s| s.to_string()),
|
||
upload_hook_config: crate::config::UploadHookSection::default(),
|
||
};
|
||
|
||
let server = SshServer::new(config);
|
||
server.run()
|
||
}
|