mirror of
https://github.com/denoland/deno.git
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ce8acee44d
Turns out we were cloning permissions which after prompting were discarded, so the state of permissions was never preserved. To handle that we need to store all permissions behind "Arc<Mutex<>>" (because there are situations where we need to send them to other thread). Testing and benching code still uses "Permissions" in most places - it's undesirable to share the same permission set between various test/bench files - otherwise granting or revoking permissions in one file would influence behavior of other test files.
349 lines
11 KiB
Rust
349 lines
11 KiB
Rust
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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use crate::args::Flags;
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use crate::colors;
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use crate::file_fetcher::get_source_from_data_url;
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use crate::ops;
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use crate::proc_state::ProcState;
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use crate::version;
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use crate::CliResolver;
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use deno_core::anyhow::anyhow;
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use deno_core::anyhow::Context;
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use deno_core::error::type_error;
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use deno_core::error::AnyError;
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use deno_core::futures::io::AllowStdIo;
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use deno_core::futures::AsyncReadExt;
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use deno_core::futures::AsyncSeekExt;
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use deno_core::futures::FutureExt;
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use deno_core::located_script_name;
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use deno_core::serde::Deserialize;
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use deno_core::serde::Serialize;
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use deno_core::serde_json;
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use deno_core::url::Url;
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use deno_core::v8_set_flags;
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use deno_core::ModuleLoader;
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use deno_core::ModuleSpecifier;
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use deno_graph::source::Resolver;
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use deno_runtime::deno_broadcast_channel::InMemoryBroadcastChannel;
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use deno_runtime::deno_tls::rustls_pemfile;
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use deno_runtime::deno_web::BlobStore;
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use deno_runtime::fmt_errors::format_js_error;
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use deno_runtime::permissions::Permissions;
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use deno_runtime::permissions::PermissionsContainer;
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use deno_runtime::permissions::PermissionsOptions;
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use deno_runtime::worker::MainWorker;
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use deno_runtime::worker::WorkerOptions;
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use deno_runtime::BootstrapOptions;
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use import_map::parse_from_json;
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use log::Level;
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use std::env::current_exe;
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use std::io::BufReader;
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use std::io::Cursor;
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use std::io::SeekFrom;
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use std::iter::once;
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use std::pin::Pin;
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use std::rc::Rc;
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use std::sync::Arc;
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#[derive(Deserialize, Serialize)]
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pub struct Metadata {
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pub argv: Vec<String>,
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pub unstable: bool,
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pub seed: Option<u64>,
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pub permissions: PermissionsOptions,
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pub location: Option<Url>,
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pub v8_flags: Vec<String>,
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pub log_level: Option<Level>,
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pub ca_stores: Option<Vec<String>>,
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pub ca_data: Option<Vec<u8>>,
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pub unsafely_ignore_certificate_errors: Option<Vec<String>>,
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pub maybe_import_map: Option<(Url, String)>,
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pub entrypoint: ModuleSpecifier,
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}
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pub const MAGIC_TRAILER: &[u8; 8] = b"d3n0l4nd";
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/// This function will try to run this binary as a standalone binary
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/// produced by `deno compile`. It determines if this is a standalone
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/// binary by checking for the magic trailer string `D3N0` at EOF-12.
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/// The magic trailer is followed by:
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/// - a u64 pointer to the JS bundle embedded in the binary
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/// - a u64 pointer to JSON metadata (serialized flags) embedded in the binary
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/// These are dereferenced, and the bundle is executed under the configuration
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/// specified by the metadata. If no magic trailer is present, this function
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/// exits with `Ok(None)`.
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pub async fn extract_standalone(
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args: Vec<String>,
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) -> Result<Option<(Metadata, eszip::EszipV2)>, AnyError> {
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let current_exe_path = current_exe()?;
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let file = std::fs::File::open(current_exe_path)?;
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let mut bufreader =
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deno_core::futures::io::BufReader::new(AllowStdIo::new(file));
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let trailer_pos = bufreader.seek(SeekFrom::End(-24)).await?;
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let mut trailer = [0; 24];
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bufreader.read_exact(&mut trailer).await?;
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let (magic_trailer, rest) = trailer.split_at(8);
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if magic_trailer != MAGIC_TRAILER {
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return Ok(None);
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}
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let (eszip_archive_pos, rest) = rest.split_at(8);
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let metadata_pos = rest;
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let eszip_archive_pos = u64_from_bytes(eszip_archive_pos)?;
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let metadata_pos = u64_from_bytes(metadata_pos)?;
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let metadata_len = trailer_pos - metadata_pos;
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bufreader.seek(SeekFrom::Start(eszip_archive_pos)).await?;
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let (eszip, loader) = eszip::EszipV2::parse(bufreader)
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.await
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.context("Failed to parse eszip header")?;
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let mut bufreader = loader.await.context("Failed to parse eszip archive")?;
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bufreader.seek(SeekFrom::Start(metadata_pos)).await?;
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let mut metadata = String::new();
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bufreader
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.take(metadata_len)
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.read_to_string(&mut metadata)
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.await
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.context("Failed to read metadata from the current executable")?;
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let mut metadata: Metadata = serde_json::from_str(&metadata).unwrap();
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metadata.argv.append(&mut args[1..].to_vec());
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Ok(Some((metadata, eszip)))
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}
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fn u64_from_bytes(arr: &[u8]) -> Result<u64, AnyError> {
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let fixed_arr: &[u8; 8] = arr
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.try_into()
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.context("Failed to convert the buffer into a fixed-size array")?;
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Ok(u64::from_be_bytes(*fixed_arr))
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}
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struct EmbeddedModuleLoader {
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eszip: eszip::EszipV2,
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maybe_import_map_resolver: Option<CliResolver>,
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}
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impl ModuleLoader for EmbeddedModuleLoader {
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fn resolve(
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&self,
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specifier: &str,
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referrer: &str,
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_is_main: bool,
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) -> Result<ModuleSpecifier, AnyError> {
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// Try to follow redirects when resolving.
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let referrer = match self.eszip.get_module(referrer) {
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Some(eszip::Module { ref specifier, .. }) => {
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deno_core::resolve_url_or_path(specifier)?
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}
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None => deno_core::resolve_url_or_path(referrer)?,
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};
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self.maybe_import_map_resolver.as_ref().map_or_else(
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|| {
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deno_core::resolve_import(specifier, referrer.as_str())
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.map_err(|err| err.into())
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},
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|r| r.resolve(specifier, &referrer).to_result(),
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)
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}
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fn load(
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&self,
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module_specifier: &ModuleSpecifier,
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_maybe_referrer: Option<ModuleSpecifier>,
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_is_dynamic: bool,
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) -> Pin<Box<deno_core::ModuleSourceFuture>> {
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let is_data_uri = get_source_from_data_url(module_specifier).ok();
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let module = self
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.eszip
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.get_module(module_specifier.as_str())
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.ok_or_else(|| type_error("Module not found"));
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let module_specifier = module_specifier.clone();
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async move {
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if let Some((source, _)) = is_data_uri {
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return Ok(deno_core::ModuleSource {
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code: source.into_bytes().into_boxed_slice(),
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module_type: deno_core::ModuleType::JavaScript,
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module_url_specified: module_specifier.to_string(),
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module_url_found: module_specifier.to_string(),
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});
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}
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let module = module?;
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let code = module.source().await;
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let code = std::str::from_utf8(&code)
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.map_err(|_| type_error("Module source is not utf-8"))?
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.to_owned();
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Ok(deno_core::ModuleSource {
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code: code.into_bytes().into_boxed_slice(),
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module_type: match module.kind {
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eszip::ModuleKind::JavaScript => deno_core::ModuleType::JavaScript,
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eszip::ModuleKind::Json => deno_core::ModuleType::Json,
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},
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module_url_specified: module_specifier.to_string(),
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module_url_found: module_specifier.to_string(),
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})
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}
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.boxed_local()
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}
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}
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fn metadata_to_flags(metadata: &Metadata) -> Flags {
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let permissions = metadata.permissions.clone();
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Flags {
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argv: metadata.argv.clone(),
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unstable: metadata.unstable,
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seed: metadata.seed,
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location: metadata.location.clone(),
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allow_env: permissions.allow_env,
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allow_hrtime: permissions.allow_hrtime,
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allow_net: permissions.allow_net,
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allow_ffi: permissions.allow_ffi,
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allow_read: permissions.allow_read,
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allow_run: permissions.allow_run,
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allow_write: permissions.allow_write,
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v8_flags: metadata.v8_flags.clone(),
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log_level: metadata.log_level,
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ca_stores: metadata.ca_stores.clone(),
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..Default::default()
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}
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}
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pub async fn run(
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eszip: eszip::EszipV2,
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metadata: Metadata,
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) -> Result<(), AnyError> {
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let flags = metadata_to_flags(&metadata);
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let main_module = &metadata.entrypoint;
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let ps = ProcState::build(flags).await?;
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let permissions = PermissionsContainer::new(Permissions::from_options(
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&metadata.permissions,
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)?);
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let blob_store = BlobStore::default();
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let broadcast_channel = InMemoryBroadcastChannel::default();
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let module_loader = Rc::new(EmbeddedModuleLoader {
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eszip,
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maybe_import_map_resolver: metadata.maybe_import_map.map(
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|(base, source)| {
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CliResolver::with_import_map(Arc::new(
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parse_from_json(&base, &source).unwrap().import_map,
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))
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},
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),
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});
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let create_web_worker_cb = Arc::new(|_| {
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todo!("Workers are currently not supported in standalone binaries");
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});
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let web_worker_cb = Arc::new(|_| {
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todo!("Workers are currently not supported in standalone binaries");
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});
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// Keep in sync with `main.rs`.
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v8_set_flags(
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once("UNUSED_BUT_NECESSARY_ARG0".to_owned())
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.chain(metadata.v8_flags.iter().cloned())
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.collect::<Vec<_>>(),
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);
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let mut root_cert_store = ps.root_cert_store.clone();
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if let Some(cert) = metadata.ca_data {
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let reader = &mut BufReader::new(Cursor::new(cert));
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match rustls_pemfile::certs(reader) {
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Ok(certs) => {
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root_cert_store.add_parsable_certificates(&certs);
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}
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Err(e) => {
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return Err(anyhow!(
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"Unable to add pem file to certificate store: {}",
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e
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));
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}
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}
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}
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let options = WorkerOptions {
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bootstrap: BootstrapOptions {
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args: metadata.argv,
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cpu_count: std::thread::available_parallelism()
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.map(|p| p.get())
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.unwrap_or(1),
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debug_flag: metadata.log_level.map_or(false, |l| l == Level::Debug),
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enable_testing_features: false,
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locale: deno_core::v8::icu::get_language_tag(),
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location: metadata.location,
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no_color: !colors::use_color(),
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is_tty: colors::is_tty(),
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runtime_version: version::deno(),
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ts_version: version::TYPESCRIPT.to_string(),
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unstable: metadata.unstable,
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user_agent: version::get_user_agent(),
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inspect: ps.options.is_inspecting(),
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},
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extensions: ops::cli_exts(ps),
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extensions_with_js: vec![],
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startup_snapshot: Some(crate::js::deno_isolate_init()),
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unsafely_ignore_certificate_errors: metadata
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.unsafely_ignore_certificate_errors,
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root_cert_store: Some(root_cert_store),
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seed: metadata.seed,
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source_map_getter: None,
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format_js_error_fn: Some(Arc::new(format_js_error)),
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create_web_worker_cb,
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web_worker_preload_module_cb: web_worker_cb.clone(),
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web_worker_pre_execute_module_cb: web_worker_cb,
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maybe_inspector_server: None,
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should_break_on_first_statement: false,
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should_wait_for_inspector_session: false,
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module_loader,
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npm_resolver: None, // not currently supported
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get_error_class_fn: Some(&get_error_class_name),
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cache_storage_dir: None,
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origin_storage_dir: None,
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blob_store,
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broadcast_channel,
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shared_array_buffer_store: None,
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compiled_wasm_module_store: None,
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stdio: Default::default(),
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};
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let mut worker = MainWorker::bootstrap_from_options(
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main_module.clone(),
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permissions,
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options,
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);
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worker.execute_main_module(main_module).await?;
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worker.dispatch_load_event(&located_script_name!())?;
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loop {
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worker.run_event_loop(false).await?;
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if !worker.dispatch_beforeunload_event(&located_script_name!())? {
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break;
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}
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}
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worker.dispatch_unload_event(&located_script_name!())?;
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std::process::exit(0);
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}
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fn get_error_class_name(e: &AnyError) -> &'static str {
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deno_runtime::errors::get_error_class_name(e).unwrap_or_else(|| {
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panic!(
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"Error '{}' contains boxed error of unsupported type:{}",
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e,
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e.chain()
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.map(|e| format!("\n {:?}", e))
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.collect::<String>()
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);
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})
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}
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