1use crate::{
2 json_log::LogRecord,
3 protocol::{MESSAGE_LEN_SIZE, message_len_from_buffer, read_message_with_len, write_message},
4};
5use anyhow::{Context as _, Result};
6use futures::{
7 AsyncReadExt as _, FutureExt as _, StreamExt as _,
8 channel::mpsc::{Sender, UnboundedReceiver, UnboundedSender},
9};
10use gpui::{AppContext as _, AsyncApp, Task};
11use rpc::proto::Envelope;
12use smol::process::Child;
13
14pub mod ssh;
15pub mod wsl;
16
17fn handle_rpc_messages_over_child_process_stdio(
18 mut ssh_proxy_process: Child,
19 incoming_tx: UnboundedSender<Envelope>,
20 mut outgoing_rx: UnboundedReceiver<Envelope>,
21 mut connection_activity_tx: Sender<()>,
22 cx: &AsyncApp,
23) -> Task<Result<i32>> {
24 let mut child_stderr = ssh_proxy_process.stderr.take().unwrap();
25 let mut child_stdout = ssh_proxy_process.stdout.take().unwrap();
26 let mut child_stdin = ssh_proxy_process.stdin.take().unwrap();
27
28 let mut stdin_buffer = Vec::new();
29 let mut stdout_buffer = Vec::new();
30 let mut stderr_buffer = Vec::new();
31 let mut stderr_offset = 0;
32
33 let stdin_task = cx.background_spawn(async move {
34 while let Some(outgoing) = outgoing_rx.next().await {
35 write_message(&mut child_stdin, &mut stdin_buffer, outgoing).await?;
36 }
37 anyhow::Ok(())
38 });
39
40 let stdout_task = cx.background_spawn({
41 let mut connection_activity_tx = connection_activity_tx.clone();
42 async move {
43 loop {
44 stdout_buffer.resize(MESSAGE_LEN_SIZE, 0);
45 let len = child_stdout.read(&mut stdout_buffer).await?;
46
47 if len == 0 {
48 return anyhow::Ok(());
49 }
50
51 if len < MESSAGE_LEN_SIZE {
52 child_stdout.read_exact(&mut stdout_buffer[len..]).await?;
53 }
54
55 let message_len = message_len_from_buffer(&stdout_buffer);
56 let envelope =
57 read_message_with_len(&mut child_stdout, &mut stdout_buffer, message_len)
58 .await?;
59 connection_activity_tx.try_send(()).ok();
60 incoming_tx.unbounded_send(envelope).ok();
61 }
62 }
63 });
64
65 let stderr_task: Task<anyhow::Result<()>> = cx.background_spawn(async move {
66 loop {
67 stderr_buffer.resize(stderr_offset + 1024, 0);
68
69 let len = child_stderr
70 .read(&mut stderr_buffer[stderr_offset..])
71 .await?;
72 if len == 0 {
73 return anyhow::Ok(());
74 }
75
76 stderr_offset += len;
77 let mut start_ix = 0;
78 while let Some(ix) = stderr_buffer[start_ix..stderr_offset]
79 .iter()
80 .position(|b| b == &b'\n')
81 {
82 let line_ix = start_ix + ix;
83 let content = &stderr_buffer[start_ix..line_ix];
84 start_ix = line_ix + 1;
85 if let Ok(record) = serde_json::from_slice::<LogRecord>(content) {
86 record.log(log::logger())
87 } else {
88 eprintln!("(remote) {}", String::from_utf8_lossy(content));
89 }
90 }
91 stderr_buffer.drain(0..start_ix);
92 stderr_offset -= start_ix;
93
94 connection_activity_tx.try_send(()).ok();
95 }
96 });
97
98 cx.background_spawn(async move {
99 let result = futures::select! {
100 result = stdin_task.fuse() => {
101 result.context("stdin")
102 }
103 result = stdout_task.fuse() => {
104 result.context("stdout")
105 }
106 result = stderr_task.fuse() => {
107 result.context("stderr")
108 }
109 };
110 let status = ssh_proxy_process.status().await?.code().unwrap_or(1);
111 match result {
112 Ok(_) => Ok(status),
113 Err(error) => Err(error),
114 }
115 })
116}
117
118#[cfg(debug_assertions)]
119async fn build_remote_server_from_source(
120 platform: &crate::RemotePlatform,
121 delegate: &dyn crate::RemoteClientDelegate,
122 cx: &mut AsyncApp,
123) -> Result<Option<std::path::PathBuf>> {
124 use smol::process::{Command, Stdio};
125 use std::env::VarError;
126 use std::path::Path;
127
128 let build_remote_server = std::env::var("ZED_BUILD_REMOTE_SERVER").unwrap_or_default();
129
130 if build_remote_server == "false"
131 || build_remote_server == "no"
132 || build_remote_server == "off"
133 || build_remote_server == "0"
134 {
135 return Ok(None);
136 }
137
138 async fn run_cmd(command: &mut Command) -> Result<()> {
139 let output = command
140 .kill_on_drop(true)
141 .stderr(Stdio::inherit())
142 .output()
143 .await?;
144 anyhow::ensure!(
145 output.status.success(),
146 "Failed to run command: {command:?}"
147 );
148 Ok(())
149 }
150
151 let use_musl = !build_remote_server.contains("nomusl");
152 let triple = format!(
153 "{}-{}",
154 platform.arch,
155 match platform.os {
156 "linux" =>
157 if use_musl {
158 "unknown-linux-musl"
159 } else {
160 "unknown-linux-gnu"
161 },
162 "macos" => "apple-darwin",
163 _ => anyhow::bail!("can't cross compile for: {:?}", platform),
164 }
165 );
166 let mut rust_flags = match std::env::var("RUSTFLAGS") {
167 Ok(val) => val,
168 Err(VarError::NotPresent) => String::new(),
169 Err(e) => {
170 log::error!("Failed to get env var `RUSTFLAGS` value: {e}");
171 String::new()
172 }
173 };
174 if platform.os == "linux" && use_musl {
175 rust_flags.push_str(" -C target-feature=+crt-static");
176 }
177 if build_remote_server.contains("mold") {
178 rust_flags.push_str(" -C link-arg=-fuse-ld=mold");
179 }
180
181 if platform.arch == std::env::consts::ARCH && platform.os == std::env::consts::OS {
182 delegate.set_status(Some("Building remote server binary from source"), cx);
183 log::info!("building remote server binary from source");
184 run_cmd(
185 Command::new("cargo")
186 .args([
187 "build",
188 "--package",
189 "remote_server",
190 "--features",
191 "debug-embed",
192 "--target-dir",
193 "target/remote_server",
194 "--target",
195 &triple,
196 ])
197 .env("RUSTFLAGS", &rust_flags),
198 )
199 .await?;
200 } else {
201 let which = cx
202 .background_spawn(async move { which::which("zig") })
203 .await;
204
205 if which.is_err() {
206 #[cfg(not(target_os = "windows"))]
207 {
208 anyhow::bail!(
209 "zig not found on $PATH, install zig (see https://ziglang.org/learn/getting-started or use zigup)"
210 )
211 }
212 #[cfg(target_os = "windows")]
213 {
214 anyhow::bail!(
215 "zig not found on $PATH, install zig (use `winget install -e --id zig.zig` or see https://ziglang.org/learn/getting-started or use zigup)"
216 )
217 }
218 }
219
220 delegate.set_status(Some("Adding rustup target for cross-compilation"), cx);
221 log::info!("adding rustup target");
222 run_cmd(Command::new("rustup").args(["target", "add"]).arg(&triple)).await?;
223
224 delegate.set_status(Some("Installing cargo-zigbuild for cross-compilation"), cx);
225 log::info!("installing cargo-zigbuild");
226 run_cmd(Command::new("cargo").args(["install", "--locked", "cargo-zigbuild"])).await?;
227
228 delegate.set_status(
229 Some(&format!(
230 "Building remote binary from source for {triple} with Zig"
231 )),
232 cx,
233 );
234 log::info!("building remote binary from source for {triple} with Zig");
235 run_cmd(
236 Command::new("cargo")
237 .args([
238 "zigbuild",
239 "--package",
240 "remote_server",
241 "--features",
242 "debug-embed",
243 "--target-dir",
244 "target/remote_server",
245 "--target",
246 &triple,
247 ])
248 .env("RUSTFLAGS", &rust_flags),
249 )
250 .await?;
251 };
252 let bin_path = Path::new("target")
253 .join("remote_server")
254 .join(&triple)
255 .join("debug")
256 .join("remote_server");
257
258 let path = if !build_remote_server.contains("nocompress") {
259 delegate.set_status(Some("Compressing binary"), cx);
260
261 #[cfg(not(target_os = "windows"))]
262 {
263 run_cmd(Command::new("gzip").args(["-f", &bin_path.to_string_lossy()])).await?;
264 }
265
266 #[cfg(target_os = "windows")]
267 {
268 // On Windows, we use 7z to compress the binary
269 let seven_zip = which::which("7z.exe").context("7z.exe not found on $PATH, install it (e.g. with `winget install -e --id 7zip.7zip`) or, if you don't want this behaviour, set $env:ZED_BUILD_REMOTE_SERVER=\"nocompress\"")?;
270 let gz_path = format!("target/remote_server/{}/debug/remote_server.gz", triple);
271 if smol::fs::metadata(&gz_path).await.is_ok() {
272 smol::fs::remove_file(&gz_path).await?;
273 }
274 run_cmd(Command::new(seven_zip).args([
275 "a",
276 "-tgzip",
277 &gz_path,
278 &bin_path.to_string_lossy(),
279 ]))
280 .await?;
281 }
282
283 let mut archive_path = bin_path;
284 archive_path.set_extension("gz");
285 std::env::current_dir()?.join(archive_path)
286 } else {
287 bin_path
288 };
289
290 Ok(Some(path))
291}