CLI fixes for hotpatching the playground (#4715)

* add component subcommand

* add dx component add, remove and list commands

* handle rust dependencies

* handle component dependencies

* fetch remote registries

* sort components before listing them

* remove local dependency

* move te component manifest into the dioxus workspace

* add additional instalation instructions the first time the component
module is created

* fix mod name

* fix clippy

* improve docs and move to the main branch of components

* fix typos

* more typos

* undo const-serialize changes

* remove a few unwraps

* Allow adding multiple components at once and add a `--all` flag

* add options to the config for the base path, global asset path and
default registry

* component_path -> component_dir

* component_dir is always relative to the crate root

* fix clippy

* fix hot patching with a base path

* read the hot patch file from stdin instead of a CLI arg to allow for longer inputs

* fix request imports

* wip: code style changes

* rename to "components" instead of "component"

* bump lock

* move to method on request

* read until eof in the case of pretty json

* strip is now copy

---------

Co-authored-by: Jonathan Kelley <jkelleyrtp@gmail.com>

Cargo.toml

@@ -250,7 +250,7 @@ futures-util = { version = "0.3", default-features = false }
 rustc-hash = "2.1.1"
 wasm-bindgen = "0.2.100"
 wasm-bindgen-futures = "0.4.50"
-js-sys = "0.3.77"
+js-sys = "0.3"
 web-sys = { version = "0.3.77", default-features = false }
 html_parser = "0.7.0"
 thiserror = "2.0.12"

packages/cli/src/build/builder.rs

@@ -640,7 +640,6 @@ impl AppBuilder {
     ) -> Result<JumpTable> {
         let original = self.build.main_exe();
         let new = self.build.patch_exe(res.time_start);
-        let triple = self.build.triple.clone();
         let asset_dir = self.build.asset_dir();
 
         // Hotpatch asset!() calls
@@ -688,7 +687,7 @@ impl AppBuilder {
 
         tracing::debug!("Patching {} -> {}", original.display(), new.display());
 
-        let mut jump_table = crate::build::create_jump_table(&new, &triple, cache)?;
+        let mut jump_table = self.build.create_jump_table(&new, cache)?;
 
         // If it's android, we need to copy the assets to the device and then change the location of the patch
         if self.build.bundle == BundleFormat::Android {
@@ -697,16 +696,6 @@ impl AppBuilder {
                 .await?;
         }
 
-        // Rebase the wasm binary to be relocatable once the jump table is generated
-        if triple.architecture == target_lexicon::Architecture::Wasm32 {
-            // Make sure we use the dir relative to the public dir, so the web can load it as a proper URL
-            //
-            // ie we would've shipped `/Users/foo/Projects/dioxus/target/dx/project/debug/web/public/wasm/lib.wasm`
-            //    but we want to ship `/wasm/lib.wasm`
-            jump_table.lib =
-                PathBuf::from("/").join(jump_table.lib.strip_prefix(self.build.root_dir()).unwrap())
-        }
-
         let changed_files = match &res.mode {
             BuildMode::Thin { changed_files, .. } => changed_files.clone(),
             _ => vec![],

packages/cli/src/build/patch.rs

@@ -290,24 +290,7 @@ impl HotpatchModuleCache {
     }
 }
 
-/// Create a jump table for the given original and patch files.
-pub fn create_jump_table(
-    patch: &Path,
-    triple: &Triple,
-    cache: &HotpatchModuleCache,
-) -> Result<JumpTable> {
-    // Symbols are stored differently based on the platform, so we need to handle them differently.
-    // - Wasm requires the walrus crate and actually modifies the patch file
-    // - windows requires the pdb crate and pdb files
-    // - nix requires the object crate
-    match triple.operating_system {
-        OperatingSystem::Windows => create_windows_jump_table(patch, cache),
-        _ if triple.architecture == Architecture::Wasm32 => create_wasm_jump_table(patch, cache),
-        _ => create_native_jump_table(patch, triple, cache),
-    }
-}
-
-fn create_windows_jump_table(patch: &Path, cache: &HotpatchModuleCache) -> Result<JumpTable> {
+pub fn create_windows_jump_table(patch: &Path, cache: &HotpatchModuleCache) -> Result<JumpTable> {
     use pdb::FallibleIterator;
     let old_name_to_addr = &cache.symbol_table;
 
@@ -361,7 +344,7 @@ fn create_windows_jump_table(patch: &Path, cache: &HotpatchModuleCache) -> Resul
 ///
 /// This does not work for WASM since the `object` crate does not support emitting the WASM format,
 /// and because WASM requires more logic to handle the wasm-bindgen transformations.
-fn create_native_jump_table(
+pub fn create_native_jump_table(
     patch: &Path,
     triple: &Triple,
     cache: &HotpatchModuleCache,
@@ -416,7 +399,7 @@ fn create_native_jump_table(
 /// to manually satisfy them here, removing their need to be imported.
 ///
 /// <https://github.com/WebAssembly/tool-conventions/blob/main/DynamicLinking.md>
-fn create_wasm_jump_table(patch: &Path, cache: &HotpatchModuleCache) -> Result<JumpTable> {
+pub fn create_wasm_jump_table(patch: &Path, cache: &HotpatchModuleCache) -> Result<JumpTable> {
     let name_to_ifunc_old = &cache.symbol_ifunc_map;
     let old = &cache.old_wasm;
     let old_symbols =

packages/cli/src/build/request.rs

@@ -349,6 +349,7 @@ use std::{
     },
     time::{SystemTime, UNIX_EPOCH},
 };
+use subsecond_types::JumpTable;
 use target_lexicon::{Architecture, OperatingSystem, Triple};
 use tempfile::TempDir;
 use tokio::{io::AsyncBufReadExt, process::Command};
@@ -2334,6 +2335,48 @@ impl BuildRequest {
         Ok(())
     }
 
+    pub(crate) fn create_jump_table(
+        &self,
+        patch: &Path,
+        cache: &HotpatchModuleCache,
+    ) -> Result<JumpTable> {
+        use crate::build::patch::{
+            create_native_jump_table, create_wasm_jump_table, create_windows_jump_table,
+        };
+
+        let root_dir = self.root_dir();
+        let base_path = self.base_path();
+        let triple = &self.triple;
+
+        // Symbols are stored differently based on the platform, so we need to handle them differently.
+        // - Wasm requires the walrus crate and actually modifies the patch file
+        // - windows requires the pdb crate and pdb files
+        // - nix requires the object crate
+        let mut jump_table = match triple.operating_system {
+            OperatingSystem::Windows => create_windows_jump_table(patch, cache)?,
+            _ if triple.architecture == Architecture::Wasm32 => {
+                create_wasm_jump_table(patch, cache)?
+            }
+            _ => create_native_jump_table(patch, triple, cache)?,
+        };
+
+        // root_dir: &Path,
+        //     base_path: Option<&str>,
+        // Rebase the wasm binary to be relocatable once the jump table is generated
+        if triple.architecture == target_lexicon::Architecture::Wasm32 {
+            // Make sure we use the dir relative to the public dir, so the web can load it as a proper URL
+            //
+            // ie we would've shipped `/Users/foo/Projects/dioxus/target/dx/project/debug/web/public/wasm/lib.wasm`
+            //    but we want to ship `/wasm/lib.wasm`
+            jump_table.lib = PathBuf::from(
+                "/".to_string() + base_path.unwrap_or_default().trim_start_matches('/'),
+            )
+            .join(jump_table.lib.strip_prefix(root_dir).unwrap())
+        }
+
+        Ok(jump_table)
+    }
+
     /// Automatically detect the linker flavor based on the target triple and any custom linkers.
     ///
     /// This tries to replicate what rustc does when selecting the linker flavor based on the linker
@@ -3567,7 +3610,7 @@ impl BuildRequest {
 
         // Get the strip setting from the profile or the profile it inherits from
         fn get_strip(profile: &Profile, profiles: &Profiles) -> Option<StripSetting> {
-            profile.strip.clone().or_else(|| {
+            profile.strip.or_else(|| {
                 // If we can't find the strip setting, check if we inherit from another profile
                 profile.inherits.as_ref().and_then(|inherits| {
                     let profile = match inherits.as_str() {

packages/cli/src/cli/hotpatch.rs

@@ -5,11 +5,15 @@ use crate::{
 use anyhow::Context;
 use clap::Parser;
 use dioxus_dx_wire_format::StructuredBuildArtifacts;
+use std::io::Read;
 use std::sync::Arc;
 
 const HELP_HEADING: &str = "Hotpatching a binary";
 
-/// Patches a single binary, but takes the same arguments as a `cargo build`.
+/// Patches a single binary, but takes the same arguments as a `cargo build` and the serialized output from `dx build --fat-binary` as input.
+///
+/// This is intended to be used with something like `dx build --fat-binary >> output.json` and then
+/// `cat output.json | dx hotpatch --aslr-reference 0x12345678` to produce a hotpatched binary.
 ///
 /// By default, patches the client, but you can set patch_server to true to patch the server instead.
 #[derive(Clone, Debug, Parser)]
@@ -18,10 +22,6 @@ pub struct HotpatchTip {
     #[clap(long, num_args = 0..=1, default_missing_value="true", help_heading = HELP_HEADING)]
     pub patch_server: Option<bool>,
 
-    /// The serialized output from the `dx build --fat-binary` command
-    #[clap(long, help_heading = HELP_HEADING)]
-    pub serialized_artifacts: String,
-
     /// The ASLR reference of the running app being patched. Used to generate sensible offsets for patched code.
     #[clap(long, help_heading = HELP_HEADING)]
     pub aslr_reference: u64,
@@ -49,8 +49,13 @@ impl HotpatchTip {
             &targets.client
         };
 
+        let mut serialized_artifacts = String::new();
+        std::io::stdin()
+            .lock()
+            .read_to_string(&mut serialized_artifacts)
+            .context("Failed to read serialized build artifacts from stdin")?;
         let structured_build_artifacts =
-            serde_json::from_str::<StructuredBuildArtifacts>(&self.serialized_artifacts)
+            serde_json::from_str::<StructuredBuildArtifacts>(&serialized_artifacts)
                 .context("Failed to parse structured build artifacts")?;
 
         let StructuredBuildArtifacts {
@@ -82,7 +87,7 @@ impl HotpatchTip {
         let patch_exe = request.patch_exe(artifacts.time_start);
 
         Ok(StructuredOutput::Hotpatch {
-            jump_table: crate::build::create_jump_table(&patch_exe, &request.triple, &cache)?,
+            jump_table: request.create_jump_table(&patch_exe, &cache)?,
             artifacts: artifacts.into_structured_output(),
         })
     }