1use crate::{
2 RemoteArch, RemoteOs, RemotePlatform,
3 json_log::LogRecord,
4 protocol::{MESSAGE_LEN_SIZE, message_len_from_buffer, read_message_with_len, write_message},
5};
6use anyhow::{Context as _, Result};
7use futures::{
8 AsyncReadExt as _, FutureExt as _, StreamExt as _,
9 channel::mpsc::{Sender, UnboundedReceiver, UnboundedSender},
10};
11use gpui::{AppContext as _, AsyncApp, Task};
12use rpc::proto::Envelope;
13use smol::process::Child;
14
15pub mod docker;
16#[cfg(any(test, feature = "test-support"))]
17pub mod mock;
18pub mod ssh;
19pub mod wsl;
20
21/// Parses the output of `uname -sm` to determine the remote platform.
22/// Takes the last line to skip possible shell initialization output.
23fn parse_platform(output: &str) -> Result<RemotePlatform> {
24 let output = output.trim();
25 let uname = output.rsplit_once('\n').map_or(output, |(_, last)| last);
26 let Some((os, arch)) = uname.split_once(" ") else {
27 anyhow::bail!("unknown uname: {uname:?}")
28 };
29
30 let os = match os {
31 "Darwin" => RemoteOs::MacOs,
32 "Linux" => RemoteOs::Linux,
33 _ => anyhow::bail!(
34 "Prebuilt remote servers are not yet available for {os:?}. See https://zed.dev/docs/remote-development"
35 ),
36 };
37
38 // exclude armv5,6,7 as they are 32-bit.
39 let arch = if arch.starts_with("armv8")
40 || arch.starts_with("armv9")
41 || arch.starts_with("arm64")
42 || arch.starts_with("aarch64")
43 {
44 RemoteArch::Aarch64
45 } else if arch.starts_with("x86") {
46 RemoteArch::X86_64
47 } else {
48 anyhow::bail!(
49 "Prebuilt remote servers are not yet available for {arch:?}. See https://zed.dev/docs/remote-development"
50 )
51 };
52
53 Ok(RemotePlatform { os, arch })
54}
55
56/// Parses the output of `echo $SHELL` to determine the remote shell.
57/// Takes the last line to skip possible shell initialization output.
58fn parse_shell(output: &str, fallback_shell: &str) -> String {
59 let output = output.trim();
60 let shell = output.rsplit_once('\n').map_or(output, |(_, last)| last);
61 if shell.is_empty() {
62 log::error!("$SHELL is not set, falling back to {fallback_shell}");
63 fallback_shell.to_owned()
64 } else {
65 shell.to_owned()
66 }
67}
68
69fn handle_rpc_messages_over_child_process_stdio(
70 mut remote_proxy_process: Child,
71 incoming_tx: UnboundedSender<Envelope>,
72 mut outgoing_rx: UnboundedReceiver<Envelope>,
73 mut connection_activity_tx: Sender<()>,
74 cx: &AsyncApp,
75) -> Task<Result<i32>> {
76 let mut child_stderr = remote_proxy_process.stderr.take().unwrap();
77 let mut child_stdout = remote_proxy_process.stdout.take().unwrap();
78 let mut child_stdin = remote_proxy_process.stdin.take().unwrap();
79
80 let mut stdin_buffer = Vec::new();
81 let mut stdout_buffer = Vec::new();
82 let mut stderr_buffer = Vec::new();
83 let mut stderr_offset = 0;
84
85 let stdin_task = cx.background_spawn(async move {
86 while let Some(outgoing) = outgoing_rx.next().await {
87 write_message(&mut child_stdin, &mut stdin_buffer, outgoing).await?;
88 }
89 anyhow::Ok(())
90 });
91
92 let stdout_task = cx.background_spawn({
93 let mut connection_activity_tx = connection_activity_tx.clone();
94 async move {
95 loop {
96 stdout_buffer.resize(MESSAGE_LEN_SIZE, 0);
97 let len = child_stdout.read(&mut stdout_buffer).await?;
98
99 if len == 0 {
100 return anyhow::Ok(());
101 }
102
103 if len < MESSAGE_LEN_SIZE {
104 child_stdout.read_exact(&mut stdout_buffer[len..]).await?;
105 }
106
107 let message_len = message_len_from_buffer(&stdout_buffer);
108 let envelope =
109 read_message_with_len(&mut child_stdout, &mut stdout_buffer, message_len)
110 .await?;
111 connection_activity_tx.try_send(()).ok();
112 incoming_tx.unbounded_send(envelope).ok();
113 }
114 }
115 });
116
117 let stderr_task: Task<anyhow::Result<()>> = cx.background_spawn(async move {
118 loop {
119 stderr_buffer.resize(stderr_offset + 1024, 0);
120
121 let len = child_stderr
122 .read(&mut stderr_buffer[stderr_offset..])
123 .await?;
124 if len == 0 {
125 return anyhow::Ok(());
126 }
127
128 stderr_offset += len;
129 let mut start_ix = 0;
130 while let Some(ix) = stderr_buffer[start_ix..stderr_offset]
131 .iter()
132 .position(|b| b == &b'\n')
133 {
134 let line_ix = start_ix + ix;
135 let content = &stderr_buffer[start_ix..line_ix];
136 start_ix = line_ix + 1;
137 if let Ok(record) = serde_json::from_slice::<LogRecord>(content) {
138 record.log(log::logger())
139 } else {
140 eprintln!("(remote) {}", String::from_utf8_lossy(content));
141 }
142 }
143 stderr_buffer.drain(0..start_ix);
144 stderr_offset -= start_ix;
145
146 connection_activity_tx.try_send(()).ok();
147 }
148 });
149
150 cx.background_spawn(async move {
151 let result = futures::select! {
152 result = stdin_task.fuse() => {
153 result.context("stdin")
154 }
155 result = stdout_task.fuse() => {
156 result.context("stdout")
157 }
158 result = stderr_task.fuse() => {
159 result.context("stderr")
160 }
161 };
162 let exit_status = remote_proxy_process.status().await?;
163 let status = exit_status.code().unwrap_or_else(|| {
164 #[cfg(unix)]
165 let status = std::os::unix::process::ExitStatusExt::signal(&exit_status).unwrap_or(1);
166 #[cfg(not(unix))]
167 let status = 1;
168 status
169 });
170 match result {
171 Ok(_) => Ok(status),
172 Err(error) => Err(error),
173 }
174 })
175}
176
177#[cfg(any(debug_assertions, feature = "build-remote-server-binary"))]
178async fn build_remote_server_from_source(
179 platform: &crate::RemotePlatform,
180 delegate: &dyn crate::RemoteClientDelegate,
181 binary_exists_on_server: bool,
182 cx: &mut AsyncApp,
183) -> Result<Option<std::path::PathBuf>> {
184 use smol::process::{Command, Stdio};
185 use std::env::VarError;
186 use std::path::Path;
187 use util::command::new_smol_command;
188
189 if let Ok(path) = std::env::var("ZED_COPY_REMOTE_SERVER") {
190 let path = std::path::PathBuf::from(path);
191 if path.exists() {
192 return Ok(Some(path));
193 } else {
194 log::warn!(
195 "ZED_COPY_REMOTE_SERVER path does not exist, falling back to ZED_BUILD_REMOTE_SERVER: {}",
196 path.display()
197 );
198 }
199 }
200
201 // By default, we make building remote server from source opt-out and we do not force artifact compression
202 // for quicker builds.
203 let build_remote_server =
204 std::env::var("ZED_BUILD_REMOTE_SERVER").unwrap_or("nocompress".into());
205
206 if let "never" = &*build_remote_server {
207 return Ok(None);
208 } else if let "false" | "no" | "off" | "0" = &*build_remote_server {
209 if binary_exists_on_server {
210 return Ok(None);
211 }
212 log::warn!("ZED_BUILD_REMOTE_SERVER is disabled, but no server binary exists on the server")
213 }
214
215 async fn run_cmd(command: &mut Command) -> Result<()> {
216 let output = command
217 .kill_on_drop(true)
218 .stdout(Stdio::inherit())
219 .output()
220 .await?;
221 anyhow::ensure!(
222 output.status.success(),
223 "Failed to run command: {command:?}: output: {}",
224 String::from_utf8_lossy(&output.stderr)
225 );
226 Ok(())
227 }
228
229 let use_musl = !build_remote_server.contains("nomusl");
230 let triple = format!(
231 "{}-{}",
232 platform.arch,
233 match platform.os {
234 RemoteOs::Linux =>
235 if use_musl {
236 "unknown-linux-musl"
237 } else {
238 "unknown-linux-gnu"
239 },
240 RemoteOs::MacOs => "apple-darwin",
241 RemoteOs::Windows if cfg!(windows) => "pc-windows-msvc",
242 RemoteOs::Windows => "pc-windows-gnu",
243 }
244 );
245 let mut rust_flags = match std::env::var("RUSTFLAGS") {
246 Ok(val) => val,
247 Err(VarError::NotPresent) => String::new(),
248 Err(e) => {
249 log::error!("Failed to get env var `RUSTFLAGS` value: {e}");
250 String::new()
251 }
252 };
253 if platform.os == RemoteOs::Linux && use_musl {
254 rust_flags.push_str(" -C target-feature=+crt-static");
255
256 if let Ok(path) = std::env::var("ZED_ZSTD_MUSL_LIB") {
257 rust_flags.push_str(&format!(" -C link-arg=-L{path}"));
258 }
259 }
260 if build_remote_server.contains("mold") {
261 rust_flags.push_str(" -C link-arg=-fuse-ld=mold");
262 }
263
264 if platform.arch.as_str() == std::env::consts::ARCH
265 && platform.os.as_str() == std::env::consts::OS
266 {
267 delegate.set_status(Some("Building remote server binary from source"), cx);
268 log::info!("building remote server binary from source");
269 run_cmd(
270 new_smol_command("cargo")
271 .current_dir(concat!(env!("CARGO_MANIFEST_DIR"), "/../.."))
272 .args([
273 "build",
274 "--package",
275 "remote_server",
276 "--features",
277 "debug-embed",
278 "--target-dir",
279 "target/remote_server",
280 "--target",
281 &triple,
282 ])
283 .env("RUSTFLAGS", &rust_flags),
284 )
285 .await?;
286 } else {
287 if which("zig", cx).await?.is_none() {
288 anyhow::bail!(if cfg!(not(windows)) {
289 "zig not found on $PATH, install zig (see https://ziglang.org/learn/getting-started or use zigup)"
290 } else {
291 "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)"
292 });
293 }
294
295 let rustup = which("rustup", cx)
296 .await?
297 .context("rustup not found on $PATH, install rustup (see https://rustup.rs/)")?;
298 delegate.set_status(Some("Adding rustup target for cross-compilation"), cx);
299 log::info!("adding rustup target");
300 run_cmd(
301 new_smol_command(rustup)
302 .args(["target", "add"])
303 .arg(&triple),
304 )
305 .await?;
306
307 if which("cargo-zigbuild", cx).await?.is_none() {
308 delegate.set_status(Some("Installing cargo-zigbuild for cross-compilation"), cx);
309 log::info!("installing cargo-zigbuild");
310 run_cmd(new_smol_command("cargo").args(["install", "--locked", "cargo-zigbuild"]))
311 .await?;
312 }
313
314 delegate.set_status(
315 Some(&format!(
316 "Building remote binary from source for {triple} with Zig"
317 )),
318 cx,
319 );
320 log::info!("building remote binary from source for {triple} with Zig");
321 run_cmd(
322 new_smol_command("cargo")
323 .args([
324 "zigbuild",
325 "--package",
326 "remote_server",
327 "--features",
328 "debug-embed",
329 "--target-dir",
330 "target/remote_server",
331 "--target",
332 &triple,
333 ])
334 .env("RUSTFLAGS", &rust_flags),
335 )
336 .await?;
337 };
338 let bin_path = Path::new("target")
339 .join("remote_server")
340 .join(&triple)
341 .join("debug")
342 .join("remote_server")
343 .with_extension(if platform.os.is_windows() { "exe" } else { "" });
344
345 let path = if !build_remote_server.contains("nocompress") {
346 delegate.set_status(Some("Compressing binary"), cx);
347
348 #[cfg(not(target_os = "windows"))]
349 {
350 run_cmd(new_smol_command("gzip").args(["-f", &bin_path.to_string_lossy()])).await?;
351 }
352
353 #[cfg(target_os = "windows")]
354 {
355 let zip_path = format!("target/remote_server/{}/debug/remote_server.zip", triple);
356 if smol::fs::metadata(&zip_path).await.is_ok() {
357 smol::fs::remove_file(&zip_path).await?;
358 }
359 let compress_command = format!(
360 "Compress-Archive -Path '{}' -DestinationPath '{}' -Force",
361 bin_path.to_string_lossy(),
362 zip_path
363 );
364 run_cmd(new_smol_command("powershell.exe").args([
365 "-NoProfile",
366 "-Command",
367 &compress_command,
368 ]))
369 .await?;
370 }
371
372 let mut archive_path = bin_path;
373 archive_path.set_extension("zip");
374 std::env::current_dir()?.join(archive_path)
375 } else {
376 bin_path
377 };
378
379 Ok(Some(path))
380}
381
382#[cfg(any(debug_assertions, feature = "build-remote-server-binary"))]
383async fn which(
384 binary_name: impl AsRef<str>,
385 cx: &mut AsyncApp,
386) -> Result<Option<std::path::PathBuf>> {
387 let binary_name = binary_name.as_ref().to_string();
388 let binary_name_cloned = binary_name.clone();
389 let res = cx
390 .background_spawn(async move { which::which(binary_name_cloned) })
391 .await;
392 match res {
393 Ok(path) => Ok(Some(path)),
394 Err(which::Error::CannotFindBinaryPath) => Ok(None),
395 Err(err) => Err(anyhow::anyhow!(
396 "Failed to run 'which' to find the binary '{binary_name}': {err}"
397 )),
398 }
399}
400
401#[cfg(test)]
402mod tests {
403 use super::*;
404
405 #[test]
406 fn test_parse_platform() {
407 let result = parse_platform("Linux x86_64\n").unwrap();
408 assert_eq!(result.os, RemoteOs::Linux);
409 assert_eq!(result.arch, RemoteArch::X86_64);
410
411 let result = parse_platform("Darwin arm64\n").unwrap();
412 assert_eq!(result.os, RemoteOs::MacOs);
413 assert_eq!(result.arch, RemoteArch::Aarch64);
414
415 let result = parse_platform("Linux x86_64").unwrap();
416 assert_eq!(result.os, RemoteOs::Linux);
417 assert_eq!(result.arch, RemoteArch::X86_64);
418
419 let result = parse_platform("some shell init output\nLinux aarch64\n").unwrap();
420 assert_eq!(result.os, RemoteOs::Linux);
421 assert_eq!(result.arch, RemoteArch::Aarch64);
422
423 let result = parse_platform("some shell init output\nLinux aarch64").unwrap();
424 assert_eq!(result.os, RemoteOs::Linux);
425 assert_eq!(result.arch, RemoteArch::Aarch64);
426
427 assert_eq!(
428 parse_platform("Linux armv8l\n").unwrap().arch,
429 RemoteArch::Aarch64
430 );
431 assert_eq!(
432 parse_platform("Linux aarch64\n").unwrap().arch,
433 RemoteArch::Aarch64
434 );
435 assert_eq!(
436 parse_platform("Linux x86_64\n").unwrap().arch,
437 RemoteArch::X86_64
438 );
439
440 let result = parse_platform(
441 r#"Linux x86_64 - What you're referring to as Linux, is in fact, GNU/Linux...\n"#,
442 )
443 .unwrap();
444 assert_eq!(result.os, RemoteOs::Linux);
445 assert_eq!(result.arch, RemoteArch::X86_64);
446
447 assert!(parse_platform("Windows x86_64\n").is_err());
448 assert!(parse_platform("Linux armv7l\n").is_err());
449 }
450
451 #[test]
452 fn test_parse_shell() {
453 assert_eq!(parse_shell("/bin/bash\n", "sh"), "/bin/bash");
454 assert_eq!(parse_shell("/bin/zsh\n", "sh"), "/bin/zsh");
455
456 assert_eq!(parse_shell("/bin/bash", "sh"), "/bin/bash");
457 assert_eq!(
458 parse_shell("some shell init output\n/bin/bash\n", "sh"),
459 "/bin/bash"
460 );
461 assert_eq!(
462 parse_shell("some shell init output\n/bin/bash", "sh"),
463 "/bin/bash"
464 );
465 assert_eq!(parse_shell("", "sh"), "sh");
466 assert_eq!(parse_shell("\n", "sh"), "sh");
467 }
468}