| //! Checks the licenses of third-party dependencies. |
| |
| use cargo_metadata::{DepKindInfo, Metadata, Package, PackageId}; |
| use std::collections::HashSet; |
| use std::path::Path; |
| |
| /// These are licenses that are allowed for all crates, including the runtime, |
| /// rustc, tools, etc. |
| #[rustfmt::skip] |
| const LICENSES: &[&str] = &[ |
| // tidy-alphabetical-start |
| "(MIT OR Apache-2.0) AND Unicode-DFS-2016", // unicode_ident |
| "0BSD OR MIT OR Apache-2.0", // adler license |
| "0BSD", |
| "Apache-2.0 / MIT", |
| "Apache-2.0 OR ISC OR MIT", |
| "Apache-2.0 OR MIT", |
| "Apache-2.0 WITH LLVM-exception OR Apache-2.0 OR MIT", // wasi license |
| "Apache-2.0", |
| "Apache-2.0/MIT", |
| "BSD-2-Clause OR Apache-2.0 OR MIT", // zerocopy |
| "ISC", |
| "MIT / Apache-2.0", |
| "MIT OR Apache-2.0 OR LGPL-2.1-or-later", // r-efi, r-efi-alloc |
| "MIT OR Apache-2.0 OR Zlib", // tinyvec_macros |
| "MIT OR Apache-2.0", |
| "MIT OR Zlib OR Apache-2.0", // miniz_oxide |
| "MIT", |
| "MIT/Apache-2.0", |
| "Unicode-DFS-2016", // tinystr and icu4x |
| "Unlicense OR MIT", |
| "Unlicense/MIT", |
| "Zlib OR Apache-2.0 OR MIT", // tinyvec |
| // tidy-alphabetical-end |
| ]; |
| |
| type ExceptionList = &'static [(&'static str, &'static str)]; |
| |
| /// The workspaces to check for licensing and optionally permitted dependencies. |
| /// |
| /// Each entry consists of a tuple with the following elements: |
| /// |
| /// * The path to the workspace root Cargo.toml file. |
| /// * The list of license exceptions. |
| /// * Optionally a tuple of: |
| /// * A list of crates for which dependencies need to be explicitly allowed. |
| /// * The list of allowed dependencies. |
| // FIXME auto detect all cargo workspaces |
| pub(crate) const WORKSPACES: &[(&str, ExceptionList, Option<(&[&str], &[&str])>)] = &[ |
| // The root workspace has to be first for check_rustfix to work. |
| (".", EXCEPTIONS, Some((&["rustc-main"], PERMITTED_RUSTC_DEPENDENCIES))), |
| // Outside of the alphabetical section because rustfmt formats it using multiple lines. |
| ( |
| "compiler/rustc_codegen_cranelift", |
| EXCEPTIONS_CRANELIFT, |
| Some((&["rustc_codegen_cranelift"], PERMITTED_CRANELIFT_DEPENDENCIES)), |
| ), |
| // tidy-alphabetical-start |
| //("compiler/rustc_codegen_gcc", EXCEPTIONS_GCC, None), // FIXME uncomment once all deps are vendored |
| //("library/backtrace", &[], None), // FIXME uncomment once rust-lang/backtrace#562 has been synced back to the rust repo |
| //("library/portable-simd", &[], None), // FIXME uncomment once rust-lang/portable-simd#363 has been synced back to the rust repo |
| //("library/stdarch", EXCEPTIONS_STDARCH, None), // FIXME uncomment once rust-lang/stdarch#1462 has been synced back to the rust repo |
| ("src/bootstrap", EXCEPTIONS_BOOTSTRAP, None), |
| ("src/ci/docker/host-x86_64/test-various/uefi_qemu_test", EXCEPTIONS_UEFI_QEMU_TEST, None), |
| //("src/etc/test-float-parse", &[], None), // FIXME uncomment once all deps are vendored |
| ("src/tools/cargo", EXCEPTIONS_CARGO, None), |
| //("src/tools/miri/test-cargo-miri", &[], None), // FIXME uncomment once all deps are vendored |
| //("src/tools/miri/test_dependencies", &[], None), // FIXME uncomment once all deps are vendored |
| ("src/tools/rust-analyzer", EXCEPTIONS_RUST_ANALYZER, None), |
| ("src/tools/x", &[], None), |
| // tidy-alphabetical-end |
| ]; |
| |
| /// These are exceptions to Rust's permissive licensing policy, and |
| /// should be considered bugs. Exceptions are only allowed in Rust |
| /// tooling. It is _crucial_ that no exception crates be dependencies |
| /// of the Rust runtime (std/test). |
| #[rustfmt::skip] |
| const EXCEPTIONS: ExceptionList = &[ |
| // tidy-alphabetical-start |
| ("ar_archive_writer", "Apache-2.0 WITH LLVM-exception"), // rustc |
| ("colored", "MPL-2.0"), // rustfmt |
| ("dissimilar", "Apache-2.0"), // rustdoc, rustc_lexer (few tests) via expect-test, (dev deps) |
| ("encoding_rs", "(Apache-2.0 OR MIT) AND BSD-3-Clause"), // opt-dist |
| ("fluent-langneg", "Apache-2.0"), // rustc (fluent translations) |
| ("fortanix-sgx-abi", "MPL-2.0"), // libstd but only for `sgx` target. FIXME: this dependency violates the documentation comment above. |
| ("instant", "BSD-3-Clause"), // rustc_driver/tracing-subscriber/parking_lot |
| ("mdbook", "MPL-2.0"), // mdbook |
| ("openssl", "Apache-2.0"), // opt-dist |
| ("option-ext", "MPL-2.0"), // cargo-miri (via `directories`) |
| ("rustc_apfloat", "Apache-2.0 WITH LLVM-exception"), // rustc (license is the same as LLVM uses) |
| ("ryu", "Apache-2.0 OR BSL-1.0"), // BSL is not acceptble, but we use it under Apache-2.0 // cargo/... (because of serde) |
| ("self_cell", "Apache-2.0"), // rustc (fluent translations) |
| ("snap", "BSD-3-Clause"), // rustc |
| ("wasm-encoder", "Apache-2.0 WITH LLVM-exception"), // rustc |
| ("wasmparser", "Apache-2.0 WITH LLVM-exception"), // rustc |
| // tidy-alphabetical-end |
| ]; |
| |
| // FIXME uncomment once rust-lang/stdarch#1462 lands |
| /* |
| const EXCEPTIONS_STDARCH: ExceptionList = &[ |
| // tidy-alphabetical-start |
| ("ryu", "Apache-2.0 OR BSL-1.0"), // BSL is not acceptble, but we use it under Apache-2.0 |
| ("wasmparser", "Apache-2.0 WITH LLVM-exception"), |
| ("wasmprinter", "Apache-2.0 WITH LLVM-exception"), |
| // tidy-alphabetical-end |
| ]; |
| */ |
| |
| const EXCEPTIONS_CARGO: ExceptionList = &[ |
| // tidy-alphabetical-start |
| ("bitmaps", "MPL-2.0+"), |
| ("bytesize", "Apache-2.0"), |
| ("ciborium", "Apache-2.0"), |
| ("ciborium-io", "Apache-2.0"), |
| ("ciborium-ll", "Apache-2.0"), |
| ("dunce", "CC0-1.0 OR MIT-0 OR Apache-2.0"), |
| ("encoding_rs", "(Apache-2.0 OR MIT) AND BSD-3-Clause"), |
| ("fiat-crypto", "MIT OR Apache-2.0 OR BSD-1-Clause"), |
| ("im-rc", "MPL-2.0+"), |
| ("normalize-line-endings", "Apache-2.0"), |
| ("openssl", "Apache-2.0"), |
| ("ryu", "Apache-2.0 OR BSL-1.0"), // BSL is not acceptble, but we use it under Apache-2.0 |
| ("sha1_smol", "BSD-3-Clause"), |
| ("similar", "Apache-2.0"), |
| ("sized-chunks", "MPL-2.0+"), |
| ("subtle", "BSD-3-Clause"), |
| ("supports-hyperlinks", "Apache-2.0"), |
| ("unicode-bom", "Apache-2.0"), |
| // tidy-alphabetical-end |
| ]; |
| |
| const EXCEPTIONS_RUST_ANALYZER: ExceptionList = &[ |
| // tidy-alphabetical-start |
| ("dissimilar", "Apache-2.0"), |
| ("notify", "CC0-1.0"), |
| ("pulldown-cmark-to-cmark", "Apache-2.0"), |
| ("rustc_apfloat", "Apache-2.0 WITH LLVM-exception"), |
| ("ryu", "Apache-2.0 OR BSL-1.0"), // BSL is not acceptble, but we use it under Apache-2.0 |
| ("scip", "Apache-2.0"), |
| ("snap", "BSD-3-Clause"), |
| // tidy-alphabetical-end |
| ]; |
| |
| const EXCEPTIONS_CRANELIFT: ExceptionList = &[ |
| // tidy-alphabetical-start |
| ("cranelift-bforest", "Apache-2.0 WITH LLVM-exception"), |
| ("cranelift-codegen", "Apache-2.0 WITH LLVM-exception"), |
| ("cranelift-codegen-meta", "Apache-2.0 WITH LLVM-exception"), |
| ("cranelift-codegen-shared", "Apache-2.0 WITH LLVM-exception"), |
| ("cranelift-control", "Apache-2.0 WITH LLVM-exception"), |
| ("cranelift-entity", "Apache-2.0 WITH LLVM-exception"), |
| ("cranelift-frontend", "Apache-2.0 WITH LLVM-exception"), |
| ("cranelift-isle", "Apache-2.0 WITH LLVM-exception"), |
| ("cranelift-jit", "Apache-2.0 WITH LLVM-exception"), |
| ("cranelift-module", "Apache-2.0 WITH LLVM-exception"), |
| ("cranelift-native", "Apache-2.0 WITH LLVM-exception"), |
| ("cranelift-object", "Apache-2.0 WITH LLVM-exception"), |
| ("mach", "BSD-2-Clause"), |
| ("regalloc2", "Apache-2.0 WITH LLVM-exception"), |
| ("target-lexicon", "Apache-2.0 WITH LLVM-exception"), |
| ("wasmtime-jit-icache-coherence", "Apache-2.0 WITH LLVM-exception"), |
| // tidy-alphabetical-end |
| ]; |
| |
| // FIXME uncomment once all deps are vendored |
| /* |
| const EXCEPTIONS_GCC: ExceptionList = &[ |
| // tidy-alphabetical-start |
| ("gccjit", "GPL-3.0"), |
| ("gccjit_sys", "GPL-3.0"), |
| // tidy-alphabetical-end |
| ]; |
| */ |
| |
| const EXCEPTIONS_BOOTSTRAP: ExceptionList = &[ |
| ("ryu", "Apache-2.0 OR BSL-1.0"), // through serde. BSL is not acceptble, but we use it under Apache-2.0 |
| ]; |
| |
| const EXCEPTIONS_UEFI_QEMU_TEST: ExceptionList = &[ |
| ("r-efi", "MIT OR Apache-2.0 OR LGPL-2.1-or-later"), // LGPL is not acceptible, but we use it under MIT OR Apache-2.0 |
| ]; |
| |
| /// These are the root crates that are part of the runtime. The licenses for |
| /// these and all their dependencies *must not* be in the exception list. |
| const RUNTIME_CRATES: &[&str] = &["std", "core", "alloc", "test", "panic_abort", "panic_unwind"]; |
| |
| const PERMITTED_DEPS_LOCATION: &str = concat!(file!(), ":", line!()); |
| |
| /// Crates rustc is allowed to depend on. Avoid adding to the list if possible. |
| /// |
| /// This list is here to provide a speed-bump to adding a new dependency to |
| /// rustc. Please check with the compiler team before adding an entry. |
| const PERMITTED_RUSTC_DEPENDENCIES: &[&str] = &[ |
| // tidy-alphabetical-start |
| "adler", |
| "ahash", |
| "aho-corasick", |
| "allocator-api2", // FIXME: only appears in Cargo.lock due to https://github.com/rust-lang/cargo/issues/10801 |
| "annotate-snippets", |
| "anstyle", |
| "ar_archive_writer", |
| "arrayvec", |
| "autocfg", |
| "bitflags", |
| "block-buffer", |
| "byteorder", // via ruzstd in object in thorin-dwp |
| "cc", |
| "cfg-if", |
| "compiler_builtins", |
| "cpufeatures", |
| "crc32fast", |
| "crossbeam-channel", |
| "crossbeam-deque", |
| "crossbeam-epoch", |
| "crossbeam-utils", |
| "crypto-common", |
| "darling", |
| "darling_core", |
| "darling_macro", |
| "datafrog", |
| "deranged", |
| "derivative", |
| "derive_more", |
| "derive_setters", |
| "digest", |
| "displaydoc", |
| "dissimilar", |
| "dlmalloc", |
| "either", |
| "elsa", |
| "ena", |
| "equivalent", |
| "errno", |
| "expect-test", |
| "fallible-iterator", // dependency of `thorin` |
| "fastrand", |
| "field-offset", |
| "flate2", |
| "fluent-bundle", |
| "fluent-langneg", |
| "fluent-syntax", |
| "fnv", |
| "fortanix-sgx-abi", |
| "generic-array", |
| "getopts", |
| "getrandom", |
| "gimli", |
| "gsgdt", |
| "hashbrown", |
| "hermit-abi", |
| "icu_list", |
| "icu_list_data", |
| "icu_locid", |
| "icu_locid_transform", |
| "icu_locid_transform_data", |
| "icu_provider", |
| "icu_provider_adapters", |
| "icu_provider_macros", |
| "ident_case", |
| "indexmap", |
| "intl-memoizer", |
| "intl_pluralrules", |
| "itertools", |
| "itoa", |
| "jemalloc-sys", |
| "jobserver", |
| "lazy_static", |
| "leb128", |
| "libc", |
| "libloading", |
| "linux-raw-sys", |
| "litemap", |
| "lock_api", |
| "log", |
| "matchers", |
| "md-5", |
| "measureme", |
| "memchr", |
| "memmap2", |
| "memoffset", |
| "miniz_oxide", |
| "nu-ansi-term", |
| "num-conv", |
| "num_cpus", |
| "object", |
| "odht", |
| "once_cell", |
| "overload", |
| "parking_lot", |
| "parking_lot_core", |
| "pathdiff", |
| "perf-event-open-sys", |
| "pin-project-lite", |
| "polonius-engine", |
| "portable-atomic", // dependency for platforms doesn't support `AtomicU64` in std |
| "powerfmt", |
| "ppv-lite86", |
| "proc-macro-hack", |
| "proc-macro2", |
| "psm", |
| "pulldown-cmark", |
| "punycode", |
| "quote", |
| "r-efi", |
| "r-efi-alloc", |
| "rand", |
| "rand_chacha", |
| "rand_core", |
| "rand_xorshift", |
| "rand_xoshiro", |
| "redox_syscall", |
| "regex", |
| "regex-automata", |
| "regex-syntax", |
| "rustc-demangle", |
| "rustc-hash", |
| "rustc-rayon", |
| "rustc-rayon-core", |
| "rustc_apfloat", |
| "rustc_version", |
| "rustix", |
| "ruzstd", // via object in thorin-dwp |
| "ryu", |
| "scoped-tls", |
| "scopeguard", |
| "self_cell", |
| "semver", |
| "serde", |
| "serde_derive", |
| "serde_json", |
| "sha1", |
| "sha2", |
| "sharded-slab", |
| "shlex", |
| "smallvec", |
| "snap", |
| "stable_deref_trait", |
| "stacker", |
| "static_assertions", |
| "strsim", |
| "syn", |
| "synstructure", |
| "tempfile", |
| "termcolor", |
| "termize", |
| "thin-vec", |
| "thiserror", |
| "thiserror-impl", |
| "thorin-dwp", |
| "thread_local", |
| "time", |
| "time-core", |
| "time-macros", |
| "tinystr", |
| "tinyvec", |
| "tinyvec_macros", |
| "tracing", |
| "tracing-attributes", |
| "tracing-core", |
| "tracing-log", |
| "tracing-subscriber", |
| "tracing-tree", |
| "twox-hash", |
| "type-map", |
| "typenum", |
| "unic-langid", |
| "unic-langid-impl", |
| "unic-langid-macros", |
| "unic-langid-macros-impl", |
| "unicase", |
| "unicode-ident", |
| "unicode-normalization", |
| "unicode-properties", |
| "unicode-script", |
| "unicode-security", |
| "unicode-width", |
| "unicode-xid", |
| "unwinding", |
| "valuable", |
| "version_check", |
| "wasi", |
| "wasm-encoder", |
| "wasmparser", |
| "winapi", |
| "winapi-i686-pc-windows-gnu", |
| "winapi-util", |
| "winapi-x86_64-pc-windows-gnu", |
| "windows", |
| "windows-core", |
| "windows-sys", |
| "windows-targets", |
| "windows_aarch64_gnullvm", |
| "windows_aarch64_msvc", |
| "windows_i686_gnu", |
| "windows_i686_msvc", |
| "windows_x86_64_gnu", |
| "windows_x86_64_gnullvm", |
| "windows_x86_64_msvc", |
| "writeable", |
| "yoke", |
| "yoke-derive", |
| "zerocopy", |
| "zerocopy-derive", |
| "zerofrom", |
| "zerofrom-derive", |
| "zerovec", |
| "zerovec-derive", |
| // tidy-alphabetical-end |
| ]; |
| |
| // These crates come from ICU4X and are licensed under the unicode license. |
| // It currently doesn't have an SPDX identifier, so they cannot put one there. |
| // See https://github.com/unicode-org/icu4x/pull/3875 |
| // FIXME: This should be removed once ICU4X crates update. |
| const ICU4X_UNICODE_LICENSE_DEPENDENCIES: &[&str] = &[ |
| // tidy-alphabetical-start |
| "icu_list", |
| "icu_list_data", |
| "icu_locid", |
| "icu_locid_transform", |
| "icu_locid_transform_data", |
| "icu_provider", |
| "icu_provider_adapters", |
| "icu_provider_macros", |
| "litemap", |
| "tinystr", |
| "writeable", |
| "yoke", |
| "yoke-derive", |
| "zerofrom", |
| "zerofrom-derive", |
| "zerovec", |
| "zerovec-derive", |
| // tidy-alphabetical-end |
| ]; |
| |
| const PERMITTED_CRANELIFT_DEPENDENCIES: &[&str] = &[ |
| // tidy-alphabetical-start |
| "ahash", |
| "anyhow", |
| "arbitrary", |
| "bitflags", |
| "bumpalo", |
| "cfg-if", |
| "cranelift-bforest", |
| "cranelift-codegen", |
| "cranelift-codegen-meta", |
| "cranelift-codegen-shared", |
| "cranelift-control", |
| "cranelift-entity", |
| "cranelift-frontend", |
| "cranelift-isle", |
| "cranelift-jit", |
| "cranelift-module", |
| "cranelift-native", |
| "cranelift-object", |
| "crc32fast", |
| "equivalent", |
| "fallible-iterator", |
| "gimli", |
| "hashbrown", |
| "indexmap", |
| "libc", |
| "libloading", |
| "log", |
| "mach", |
| "memchr", |
| "object", |
| "proc-macro2", |
| "quote", |
| "regalloc2", |
| "region", |
| "rustc-hash", |
| "slice-group-by", |
| "smallvec", |
| "stable_deref_trait", |
| "syn", |
| "target-lexicon", |
| "unicode-ident", |
| "version_check", |
| "wasmtime-jit-icache-coherence", |
| "winapi", |
| "winapi-i686-pc-windows-gnu", |
| "winapi-x86_64-pc-windows-gnu", |
| "windows-sys", |
| "windows-targets", |
| "windows_aarch64_gnullvm", |
| "windows_aarch64_msvc", |
| "windows_i686_gnu", |
| "windows_i686_msvc", |
| "windows_x86_64_gnu", |
| "windows_x86_64_gnullvm", |
| "windows_x86_64_msvc", |
| "zerocopy", |
| "zerocopy-derive", |
| // tidy-alphabetical-end |
| ]; |
| |
| /// Dependency checks. |
| /// |
| /// `root` is path to the directory with the root `Cargo.toml` (for the workspace). `cargo` is path |
| /// to the cargo executable. |
| pub fn check(root: &Path, cargo: &Path, bad: &mut bool) { |
| let mut checked_runtime_licenses = false; |
| |
| for &(workspace, exceptions, permitted_deps) in WORKSPACES { |
| if !root.join(workspace).join("Cargo.lock").exists() { |
| tidy_error!(bad, "the `{workspace}` workspace doesn't have a Cargo.lock"); |
| continue; |
| } |
| |
| let mut cmd = cargo_metadata::MetadataCommand::new(); |
| cmd.cargo_path(cargo) |
| .manifest_path(root.join(workspace).join("Cargo.toml")) |
| .features(cargo_metadata::CargoOpt::AllFeatures) |
| .other_options(vec!["--locked".to_owned()]); |
| let metadata = t!(cmd.exec()); |
| |
| check_license_exceptions(&metadata, exceptions, bad); |
| if let Some((crates, permitted_deps)) = permitted_deps { |
| check_permitted_dependencies(&metadata, workspace, permitted_deps, crates, bad); |
| } |
| |
| if workspace == "." { |
| let runtime_ids = compute_runtime_crates(&metadata); |
| check_runtime_license_exceptions(&metadata, runtime_ids, bad); |
| checked_runtime_licenses = true; |
| } |
| } |
| |
| // Sanity check to ensure we don't accidentally remove the workspace containing the runtime |
| // crates. |
| assert!(checked_runtime_licenses); |
| } |
| |
| /// Check that all licenses of runtime dependencies are in the valid list in `LICENSES`. |
| /// |
| /// Unlike for tools we don't allow exceptions to the `LICENSES` list for the runtime with the sole |
| /// exception of `fortanix-sgx-abi` which is only used on x86_64-fortanix-unknown-sgx. |
| fn check_runtime_license_exceptions( |
| metadata: &Metadata, |
| runtime_ids: HashSet<&PackageId>, |
| bad: &mut bool, |
| ) { |
| for pkg in &metadata.packages { |
| if !runtime_ids.contains(&pkg.id) { |
| // Only checking dependencies of runtime libraries here. |
| continue; |
| } |
| if pkg.source.is_none() { |
| // No need to check local packages. |
| continue; |
| } |
| let license = match &pkg.license { |
| Some(license) => license, |
| None => { |
| tidy_error!(bad, "dependency `{}` does not define a license expression", pkg.id); |
| continue; |
| } |
| }; |
| if !LICENSES.contains(&license.as_str()) { |
| // This is a specific exception because SGX is considered "third party". |
| // See https://github.com/rust-lang/rust/issues/62620 for more. |
| // In general, these should never be added and this exception |
| // should not be taken as precedent for any new target. |
| if pkg.name == "fortanix-sgx-abi" && pkg.license.as_deref() == Some("MPL-2.0") { |
| continue; |
| } |
| |
| // This exception is due to the fact that the feature set of the |
| // `object` crate is different between rustc and libstd. In the |
| // standard library only a conservative set of features are enabled |
| // which notably does not include the `wasm` feature which pulls in |
| // this dependency. In the compiler, however, the `wasm` feature is |
| // enabled. This exception is intended to be here so long as the |
| // `EXCEPTIONS` above contains `wasmparser`, but once that goes away |
| // this can be removed. |
| if pkg.name == "wasmparser" |
| && pkg.license.as_deref() == Some("Apache-2.0 WITH LLVM-exception") |
| { |
| continue; |
| } |
| |
| tidy_error!(bad, "invalid license `{}` in `{}`", license, pkg.id); |
| } |
| } |
| } |
| |
| /// Check that all licenses of tool dependencies are in the valid list in `LICENSES`. |
| /// |
| /// Packages listed in `exceptions` are allowed for tools. |
| fn check_license_exceptions(metadata: &Metadata, exceptions: &[(&str, &str)], bad: &mut bool) { |
| // Validate the EXCEPTIONS list hasn't changed. |
| for (name, license) in exceptions { |
| // Check that the package actually exists. |
| if !metadata.packages.iter().any(|p| p.name == *name) { |
| tidy_error!( |
| bad, |
| "could not find exception package `{}`\n\ |
| Remove from EXCEPTIONS list if it is no longer used.", |
| name |
| ); |
| } |
| // Check that the license hasn't changed. |
| for pkg in metadata.packages.iter().filter(|p| p.name == *name) { |
| match &pkg.license { |
| None => { |
| tidy_error!( |
| bad, |
| "dependency exception `{}` does not declare a license expression", |
| pkg.id |
| ); |
| } |
| Some(pkg_license) => { |
| if pkg_license.as_str() != *license { |
| println!("dependency exception `{name}` license has changed"); |
| println!(" previously `{license}` now `{pkg_license}`"); |
| println!(" update EXCEPTIONS for the new license"); |
| *bad = true; |
| } |
| } |
| } |
| } |
| } |
| |
| let exception_names: Vec<_> = exceptions.iter().map(|(name, _license)| *name).collect(); |
| |
| // Check if any package does not have a valid license. |
| for pkg in &metadata.packages { |
| if pkg.source.is_none() { |
| // No need to check local packages. |
| continue; |
| } |
| if exception_names.contains(&pkg.name.as_str()) { |
| continue; |
| } |
| let license = match &pkg.license { |
| Some(license) => license, |
| None => { |
| if ICU4X_UNICODE_LICENSE_DEPENDENCIES.contains(&pkg.name.as_str()) { |
| // See the comment on ICU4X_UNICODE_LICENSE_DEPENDENCIES. |
| continue; |
| } |
| tidy_error!(bad, "dependency `{}` does not define a license expression", pkg.id); |
| continue; |
| } |
| }; |
| if !LICENSES.contains(&license.as_str()) { |
| tidy_error!(bad, "invalid license `{}` in `{}`", license, pkg.id); |
| } |
| } |
| } |
| |
| /// Checks the dependency of `restricted_dependency_crates` at the given path. Changes `bad` to |
| /// `true` if a check failed. |
| /// |
| /// Specifically, this checks that the dependencies are on the `permitted_dependencies`. |
| fn check_permitted_dependencies( |
| metadata: &Metadata, |
| descr: &str, |
| permitted_dependencies: &[&'static str], |
| restricted_dependency_crates: &[&'static str], |
| bad: &mut bool, |
| ) { |
| let mut has_permitted_dep_error = false; |
| let mut deps = HashSet::new(); |
| for to_check in restricted_dependency_crates { |
| let to_check = pkg_from_name(metadata, to_check); |
| use cargo_platform::Cfg; |
| use std::str::FromStr; |
| // We don't expect the compiler to ever run on wasm32, so strip |
| // out those dependencies to avoid polluting the permitted list. |
| deps_of_filtered(metadata, &to_check.id, &mut deps, &|dep_kinds| { |
| dep_kinds.iter().any(|dep_kind| { |
| dep_kind |
| .target |
| .as_ref() |
| .map(|target| { |
| !target.matches( |
| "wasm32-unknown-unknown", |
| &[ |
| Cfg::from_str("target_arch=\"wasm32\"").unwrap(), |
| Cfg::from_str("target_os=\"unknown\"").unwrap(), |
| ], |
| ) |
| }) |
| .unwrap_or(true) |
| }) |
| }); |
| } |
| |
| // Check that the PERMITTED_DEPENDENCIES does not have unused entries. |
| for permitted in permitted_dependencies { |
| if !deps.iter().any(|dep_id| &pkg_from_id(metadata, dep_id).name == permitted) { |
| tidy_error!( |
| bad, |
| "could not find allowed package `{permitted}`\n\ |
| Remove from PERMITTED_DEPENDENCIES list if it is no longer used.", |
| ); |
| has_permitted_dep_error = true; |
| } |
| } |
| |
| // Get in a convenient form. |
| let permitted_dependencies: HashSet<_> = permitted_dependencies.iter().cloned().collect(); |
| |
| for dep in deps { |
| let dep = pkg_from_id(metadata, dep); |
| // If this path is in-tree, we don't require it to be explicitly permitted. |
| if dep.source.is_some() { |
| if !permitted_dependencies.contains(dep.name.as_str()) { |
| tidy_error!(bad, "Dependency for {descr} not explicitly permitted: {}", dep.id); |
| has_permitted_dep_error = true; |
| } |
| } |
| } |
| |
| if has_permitted_dep_error { |
| eprintln!("Go to `{PERMITTED_DEPS_LOCATION}` for the list."); |
| } |
| } |
| |
| /// Finds a package with the given name. |
| fn pkg_from_name<'a>(metadata: &'a Metadata, name: &'static str) -> &'a Package { |
| let mut i = metadata.packages.iter().filter(|p| p.name == name); |
| let result = |
| i.next().unwrap_or_else(|| panic!("could not find package `{name}` in package list")); |
| assert!(i.next().is_none(), "more than one package found for `{name}`"); |
| result |
| } |
| |
| fn pkg_from_id<'a>(metadata: &'a Metadata, id: &PackageId) -> &'a Package { |
| metadata.packages.iter().find(|p| &p.id == id).unwrap() |
| } |
| |
| /// Finds all the packages that are in the rust runtime. |
| fn compute_runtime_crates<'a>(metadata: &'a Metadata) -> HashSet<&'a PackageId> { |
| let mut result = HashSet::new(); |
| for name in RUNTIME_CRATES { |
| let id = &pkg_from_name(metadata, name).id; |
| deps_of_filtered(metadata, id, &mut result, &|_| true); |
| } |
| result |
| } |
| |
| /// Recursively find all dependencies. |
| fn deps_of_filtered<'a>( |
| metadata: &'a Metadata, |
| pkg_id: &'a PackageId, |
| result: &mut HashSet<&'a PackageId>, |
| filter: &dyn Fn(&[DepKindInfo]) -> bool, |
| ) { |
| if !result.insert(pkg_id) { |
| return; |
| } |
| let node = metadata |
| .resolve |
| .as_ref() |
| .unwrap() |
| .nodes |
| .iter() |
| .find(|n| &n.id == pkg_id) |
| .unwrap_or_else(|| panic!("could not find `{pkg_id}` in resolve")); |
| for dep in &node.deps { |
| if !filter(&dep.dep_kinds) { |
| continue; |
| } |
| deps_of_filtered(metadata, &dep.pkg, result, filter); |
| } |
| } |
