Add allowed prebuilts list

scarb-metadata/CHANGELOG.md

@@ -3,6 +3,7 @@
 All notable changes to this project will be documented in this file.
 
 ## Unreleased
+- Add `prebuilt_allowed` field to `CompilationUnitCairoPluginMetadata`.
 
 ## 1.13.0 (2024-10-28)
 - Add `CompilationUnitComponentId`.

scarb-metadata/src/lib.rs

@@ -420,6 +420,9 @@ pub struct CompilationUnitCairoPluginMetadata {
     /// Package ID.
     pub package: PackageId,
 
+    /// Whether Scarb will attempt to load prebuilt binaries associated with this plugin.
+    pub prebuilt_allowed: Option<bool>,
+
     /// Additional data not captured by deserializer.
     #[cfg_attr(feature = "builder", builder(default))]
     #[serde(flatten)]

scarb/src/compiler/compilation_unit.rs

@@ -97,6 +97,7 @@ pub struct CompilationUnitCairoPlugin {
     /// The Scarb plugin [`Package`] to load.
     pub package: Package,
     pub builtin: bool,
+    pub prebuilt_allowed: bool,
 }
 
 /// Unique identifier of the compilation unit component.

scarb/src/core/manifest/toml_manifest.rs

@@ -357,6 +357,12 @@ impl DefaultForProfile for TomlProfile {
     }
 }
 
+#[derive(Debug, Default, Deserialize, Serialize, Clone)]
+#[serde(rename_all = "kebab-case")]
+pub struct TomlToolScarbMetadata {
+    pub allow_prebuilt_plugins: Option<Vec<String>>,
+}
+
 impl TomlManifest {
     pub fn read_from_path(path: &Utf8Path) -> Result<Self> {
         let contents = fs::read_to_string(path)

scarb/src/core/package/mod.rs

@@ -11,7 +11,7 @@ pub use name::*;
 use scarb_ui::args::WithManifestPath;
 
 use crate::core::manifest::Manifest;
-use crate::core::{Target, TargetKind};
+use crate::core::{Target, TargetKind, TomlToolScarbMetadata};
 use crate::internal::fsx;
 
 mod id;
@@ -137,6 +137,15 @@ impl Package {
         Ok(structured)
     }
 
+    pub fn scarb_tool_metadata(&self) -> Result<TomlToolScarbMetadata> {
+        Ok(self
+            .tool_metadata("scarb")
+            .cloned()
+            .map(toml::Value::try_into)
+            .transpose()?
+            .unwrap_or_default())
+    }
+
     pub fn manifest_mut(&mut self) -> &mut Manifest {
         &mut Arc::make_mut(&mut self.0).manifest
     }

scarb/src/core/resolver.rs

@@ -1,14 +1,14 @@
-use std::collections::HashMap;
-
+use crate::core::lockfile::Lockfile;
+use crate::core::{PackageId, Summary, TargetKind};
 use anyhow::{bail, Result};
 use indoc::formatdoc;
 use itertools::Itertools;
+use petgraph::algo::kosaraju_scc;
 use petgraph::graphmap::DiGraphMap;
 use petgraph::visit::{Dfs, EdgeFiltered, IntoNeighborsDirected, Walker};
 use smallvec::SmallVec;
-
-use crate::core::lockfile::Lockfile;
-use crate::core::{PackageId, Summary, TargetKind};
+use std::collections::{HashMap, HashSet};
+use std::hash::Hash;
 
 /// Represents a fully-resolved package dependency graph.
 ///
@@ -72,6 +72,67 @@ impl Resolve {
             .neighbors_directed(package_id, petgraph::Direction::Outgoing)
             .collect_vec()
     }
+
+    /// Find all subtress of the graph, that are reachable from nodes, that can be identified by
+    /// keys from the `start` vector, where each key is a result of applying `key` function to a
+    /// package id.
+    pub fn filter_subtrees<T: Sized + Eq + Hash>(
+        &self,
+        target_kind: &TargetKind,
+        start: Vec<T>,
+        key: impl Fn(PackageId) -> T,
+    ) -> HashSet<T> {
+        // We want to traverse the graph in topological order, so that for each node we can decide
+        // if the subtree should be included.
+        // However, we cannot actually topologically sort the graph, as it's not guaranteed to be
+        // a DAG (it may contain cycles of dependencies).
+        // Instead, we use Kosaraju's algorithm to find strongly connected components (scc) of the graph.
+        // Each of SCCs is a cycle in the original graph.
+        // The graph of SCCs is a DAG, thus we can traverse it in a topological order.
+        let scc = self.scc();
+        let mut allowed_prebuilds = SubTreeFilter::new(start);
+        for comp in &scc {
+            if comp.iter().any(|x| allowed_prebuilds.check(&key(*x))) {
+                allowed_prebuilds.allow(comp.iter().map(|x| key(*x)));
+                for package in comp {
+                    let deps = self.package_dependencies_for_target_kind(*package, target_kind);
+                    allowed_prebuilds.allow(deps.iter().map(|x| key(*x)));
+                }
+            }
+        }
+
+        allowed_prebuilds.0
+    }
+
+    /// Return a vector where each element is a strongly connected component (scc) of the graph.
+    /// The order of node ids within each scc is arbitrary,
+    /// but the order of the sccs is their topological order.
+    fn scc(&self) -> Vec<Vec<PackageId>> {
+        kosaraju_scc(&self.graph)
+            .iter()
+            .map(|scc| scc.iter().copied().collect_vec())
+            // We need to reverse the iterator here, as kosaraju algorithm returns
+            // the sccs in a postorder (reversed topological order).
+            .rev()
+            .collect_vec()
+    }
+}
+
+#[derive(Debug, Default)]
+struct SubTreeFilter<T: Sized + Eq + Hash>(HashSet<T>);
+
+impl<T: Sized + Eq + Hash> SubTreeFilter<T> {
+    fn new(allowed: Vec<T>) -> Self {
+        Self(allowed.into_iter().collect())
+    }
+
+    fn allow<I: IntoIterator<Item = T>>(&mut self, iter: I) {
+        self.0.extend(iter)
+    }
+
+    fn check(&self, key: &T) -> bool {
+        self.0.contains(key)
+    }
 }
 
 #[derive(Debug, Default, Clone, PartialEq, Eq)]

scarb/src/ops/metadata.rs

@@ -239,6 +239,7 @@ fn collect_cairo_compilation_unit_metadata(
         .map(|c| {
             m::CompilationUnitCairoPluginMetadataBuilder::default()
                 .package(wrap_package_id(c.package.id))
+                .prebuilt_allowed(c.prebuilt_allowed)
                 .build()
                 .unwrap()
         })

scarb/src/ops/resolve.rs

@@ -63,6 +63,33 @@ impl WorkspaceResolve {
             .map(|id| self.packages[id].clone())
             .collect_vec()
     }
+
+    /// Get all dependencies with allowed prebuilt macros for a given package.
+    pub fn allowed_prebuilt(
+        &self,
+        package: Package,
+        target_kind: &TargetKind,
+    ) -> Result<AllowedPrebuiltFilter> {
+        let metadata = package.scarb_tool_metadata()?;
+        let allowed = metadata.allow_prebuilt_plugins.unwrap_or_default();
+        let allowed = allowed
+            .into_iter()
+            .filter_map(|name| PackageName::try_new(name).ok())
+            .map(|name| name.to_smol_str())
+            .collect();
+        let allowed =
+            self.resolve
+                .filter_subtrees(target_kind, allowed, |package_id: PackageId| {
+                    package_id.name.to_smol_str()
+                });
+        let allowed_prebuilds = AllowedPrebuiltFilter::new(
+            allowed
+                .into_iter()
+                .map(PackageName::new)
+                .collect::<HashSet<_>>(),
+        );
+        Ok(allowed_prebuilds)
+    }
 }
 
 #[derive(Debug, Default)]
@@ -185,6 +212,19 @@ async fn collect_packages_from_resolve_graph(
     Ok(packages)
 }
 
+#[derive(Debug, Default)]
+pub struct AllowedPrebuiltFilter(HashSet<PackageName>);
+
+impl AllowedPrebuiltFilter {
+    pub fn new(allowed: HashSet<PackageName>) -> Self {
+        Self(allowed)
+    }
+
+    pub fn check(&self, package: &Package) -> bool {
+        self.0.contains(&package.id.name)
+    }
+}
+
 #[tracing::instrument(skip_all, level = "debug")]
 pub fn generate_compilation_units(
     resolve: &WorkspaceResolve,
@@ -548,6 +588,9 @@ impl<'a> PackageSolutionCollector<'a> {
         target_kind: &TargetKind,
         ignore_cairo_version: bool,
     ) -> Result<(Vec<Package>, Vec<CompilationUnitCairoPlugin>)> {
+        let allowed_prebuilds = self
+            .resolve
+            .allowed_prebuilt(self.member.clone(), target_kind)?;
         let mut classes = self
             .resolve
             .solution_of(self.member.id, target_kind)
@@ -602,12 +645,14 @@ impl<'a> PackageSolutionCollector<'a> {
         let cairo_plugins = cairo_plugins
             .into_iter()
             .map(|package| {
+                let prebuilt_allowed = allowed_prebuilds.check(&package);
                 // We can safely unwrap as all packages with `PackageClass::CairoPlugin` must define plugin target.
                 let target = package.target(&TargetKind::CAIRO_PLUGIN).unwrap();
                 let props: CairoPluginProps = target.props()?;
                 Ok(CompilationUnitCairoPlugin::builder()
                     .package(package)
                     .builtin(props.builtin)
+                    .prebuilt_allowed(prebuilt_allowed)
                     .build())
             })
             .collect::<Result<Vec<_>>>()?;

scarb/tests/metadata.rs

@@ -6,6 +6,7 @@ use itertools::Itertools;
 use serde_json::json;
 
 use scarb_metadata::{Cfg, DepKind, ManifestMetadataBuilder, Metadata, PackageMetadata};
+use scarb_test_support::cairo_plugin_project_builder::CairoPluginProjectBuilder;
 use scarb_test_support::command::{CommandExt, Scarb};
 use scarb_test_support::fsx;
 use scarb_test_support::project_builder::{Dep, DepBuilder, ProjectBuilder};
@@ -1443,3 +1444,111 @@ fn can_enable_add_redeposit_gas() {
         .unwrap();
     assert!(add_redeposit_gas);
 }
+
+#[test]
+fn prebuilt_plugins_disallowed_by_default() {
+    let t = assert_fs::TempDir::new().unwrap();
+
+    CairoPluginProjectBuilder::default()
+        .name("q")
+        .scarb_project(|builder| {
+            builder
+                .name("q")
+                .version("1.0.0")
+                .manifest_extra("[cairo-plugin]")
+        })
+        .build(&t.child("q"));
+    ProjectBuilder::start()
+        .name("y")
+        .version("1.0.0")
+        .lib_cairo(r"fn f() -> felt252 { z::f() }")
+        .dep_cairo_test()
+        .dep("q", Dep.path("../q"))
+        .build(&t.child("y"));
+    ProjectBuilder::start()
+        .name("x")
+        .version("1.0.0")
+        .lib_cairo(r"fn f() -> felt252 { y::f() }")
+        .dep_cairo_test()
+        .dep("y", Dep.path("y"))
+        .dep("q", Dep.path("q"))
+        .build(&t);
+
+    let meta = Scarb::quick_snapbox()
+        .arg("--json")
+        .arg("metadata")
+        .arg("--format-version")
+        .arg("1")
+        .current_dir(&t)
+        .stdout_json::<Metadata>();
+
+    let cu = meta
+        .compilation_units
+        .iter()
+        .find(|cu| cu.target.name == "x")
+        .unwrap();
+
+    assert_eq!(cu.cairo_plugins.len(), 1);
+    assert!(cu.cairo_plugins[0].package.repr.starts_with("q"));
+    assert!(!cu.cairo_plugins[0].prebuilt_allowed.unwrap());
+}
+
+#[test]
+fn can_allow_prebuilt_plugins_for_subtree() {
+    let t = assert_fs::TempDir::new().unwrap();
+
+    CairoPluginProjectBuilder::default()
+        .name("q")
+        .scarb_project(|builder| {
+            builder
+                .name("q")
+                .version("1.0.0")
+                .manifest_extra("[cairo-plugin]")
+        })
+        .build(&t.child("q"));
+
+    ProjectBuilder::start()
+        .name("z")
+        .version("1.0.0")
+        .lib_cairo(r"fn f() -> felt252 { q::f() }")
+        .dep_cairo_test()
+        .dep("q", Dep.path("../q"))
+        .build(&t.child("z"));
+
+    ProjectBuilder::start()
+        .name("y")
+        .version("1.0.0")
+        .lib_cairo(r"fn f() -> felt252 { z::f() }")
+        .dep_cairo_test()
+        .dep("z", Dep.path("../z"))
+        .build(&t.child("y"));
+
+    ProjectBuilder::start()
+        .name("x")
+        .version("1.0.0")
+        .lib_cairo(r"fn f() -> felt252 { y::f() }")
+        .manifest_extra(indoc! {r#"
+            [tool.scarb]
+            allow-prebuilt-plugins = ["y"]
+        "#})
+        .dep_cairo_test()
+        .dep("z", Dep.path("z"))
+        .dep("y", Dep.path("y"))
+        .build(&t);
+
+    let meta = Scarb::quick_snapbox()
+        .arg("--json")
+        .arg("metadata")
+        .arg("--format-version")
+        .arg("1")
+        .current_dir(&t)
+        .stdout_json::<Metadata>();
+    let cu = meta
+        .compilation_units
+        .iter()
+        .find(|cu| cu.target.name == "x")
+        .unwrap();
+    assert_eq!(cu.cairo_plugins.len(), 1);
+    assert!(cu.cairo_plugins[0].package.repr.starts_with("q"));
+    assert!(cu.cairo_plugins[0].prebuilt_allowed.unwrap());
+}