250 lines
8.2 KiB
Rust
250 lines
8.2 KiB
Rust
#[cfg(feature = "bindgen")]
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use bindgen::callbacks::{MacroParsingBehavior, ParseCallbacks};
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#[cfg(feature = "bindgen")]
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use bindgen::{MacroTypeVariation, RustTarget};
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use std::io::Write;
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use std::path::PathBuf;
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#[cfg(not(feature = "bindgen"))]
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use std::process;
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use std::{env, fs};
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const INCLUDES: &str = "
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#include <openssl/aes.h>
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#include <openssl/asn1.h>
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#include <openssl/bio.h>
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#include <openssl/cmac.h>
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#include <openssl/conf.h>
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#include <openssl/crypto.h>
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#include <openssl/dh.h>
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#include <openssl/dsa.h>
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#include <openssl/ec.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/hmac.h>
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#include <openssl/objects.h>
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#include <openssl/opensslv.h>
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#include <openssl/pem.h>
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#include <openssl/pkcs12.h>
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#include <openssl/pkcs7.h>
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#include <openssl/rand.h>
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#include <openssl/rsa.h>
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#include <openssl/safestack.h>
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#include <openssl/sha.h>
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#include <openssl/ssl.h>
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#include <openssl/stack.h>
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#include <openssl/x509.h>
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#include <openssl/x509_vfy.h>
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#include <openssl/x509v3.h>
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// this must be included after ssl.h for libressl!
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#include <openssl/srtp.h>
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#if !defined(LIBRESSL_VERSION_NUMBER) && !defined(OPENSSL_IS_BORINGSSL)
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#include <openssl/cms.h>
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#endif
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#if !defined(OPENSSL_IS_BORINGSSL)
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#include <openssl/comp.h>
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#include <openssl/ocsp.h>
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#endif
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#if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER >= 0x10100000
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#include <openssl/kdf.h>
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#endif
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#if OPENSSL_VERSION_NUMBER >= 0x30000000
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#include <openssl/provider.h>
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#endif
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#if OPENSSL_VERSION_NUMBER >= 0x30200000
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#include <openssl/quic.h>
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#endif
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#if defined(LIBRESSL_VERSION_NUMBER) || defined(OPENSSL_IS_BORINGSSL)
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#include <openssl/poly1305.h>
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#endif
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";
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#[cfg(feature = "bindgen")]
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pub fn run(include_dirs: &[PathBuf]) {
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let out_dir = PathBuf::from(env::var_os("OUT_DIR").unwrap());
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let mut builder = bindgen::builder()
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.parse_callbacks(Box::new(OpensslCallbacks))
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.rust_target(RustTarget::Stable_1_47)
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.ctypes_prefix("::libc")
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.raw_line("use libc::*;")
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.raw_line("#[cfg(windows)] use std::os::windows::raw::HANDLE;")
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.raw_line("type evp_pkey_st = EVP_PKEY;")
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.allowlist_file(".*[/\\\\]openssl/[^/\\\\]+\\.h")
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.allowlist_recursively(false)
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// libc is missing pthread_once_t on macOS
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.blocklist_type("CRYPTO_ONCE")
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.blocklist_function("CRYPTO_THREAD_run_once")
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// we don't want to mess with va_list
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.blocklist_function("BIO_vprintf")
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.blocklist_function("BIO_vsnprintf")
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.blocklist_function("ERR_vset_error")
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.blocklist_function("ERR_add_error_vdata")
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.blocklist_function("EVP_KDF_vctrl")
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.blocklist_type("OSSL_FUNC_core_vset_error_fn")
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.blocklist_type("OSSL_FUNC_BIO_vprintf_fn")
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.blocklist_type("OSSL_FUNC_BIO_vsnprintf_fn")
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// struct hostent * does not exist on Windows
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.blocklist_function("BIO_gethostbyname")
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// Maintain compatibility for existing enum definitions
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.rustified_enum("point_conversion_form_t")
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// Maintain compatibility for pre-union definitions
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.blocklist_type("GENERAL_NAME")
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.blocklist_type("GENERAL_NAME_st")
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.blocklist_type("EVP_PKEY")
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.blocklist_type("evp_pkey_st")
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.layout_tests(false)
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.header_contents("includes.h", INCLUDES);
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for include_dir in include_dirs {
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builder = builder
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.clang_arg("-I")
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.clang_arg(include_dir.display().to_string());
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}
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builder
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.generate()
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.unwrap()
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.write_to_file(out_dir.join("bindgen.rs"))
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.unwrap();
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}
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#[cfg(feature = "bindgen")]
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pub fn run_boringssl(include_dirs: &[PathBuf]) {
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let out_dir = PathBuf::from(env::var_os("OUT_DIR").unwrap());
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fs::File::create(out_dir.join("boring_static_wrapper.h"))
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.expect("Failed to create boring_static_wrapper.h")
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.write_all(INCLUDES.as_bytes())
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.expect("Failed to write contents to boring_static_wrapper.h");
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let mut builder = bindgen::builder()
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.rust_target(RustTarget::Stable_1_47)
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.ctypes_prefix("::libc")
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.raw_line("use libc::*;")
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.derive_default(false)
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.enable_function_attribute_detection()
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.default_macro_constant_type(MacroTypeVariation::Signed)
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.rustified_enum("point_conversion_form_t")
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.allowlist_file(".*[/\\\\]openssl/[^/]+\\.h")
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.allowlist_recursively(false)
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.blocklist_function("BIO_vsnprintf")
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.blocklist_function("OPENSSL_vasprintf")
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.wrap_static_fns(true)
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.wrap_static_fns_path(out_dir.join("boring_static_wrapper").display().to_string())
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.layout_tests(false)
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.header(
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out_dir
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.join("boring_static_wrapper.h")
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.display()
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.to_string(),
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);
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for include_dir in include_dirs {
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builder = builder
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.clang_arg("-I")
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.clang_arg(include_dir.display().to_string());
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}
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builder
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.generate()
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.unwrap()
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.write_to_file(out_dir.join("bindgen.rs"))
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.unwrap();
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cc::Build::new()
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.file(out_dir.join("boring_static_wrapper.c"))
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.includes(include_dirs)
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.compile("boring_static_wrapper");
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}
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#[cfg(not(feature = "bindgen"))]
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pub fn run_boringssl(include_dirs: &[PathBuf]) {
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let out_dir = PathBuf::from(env::var_os("OUT_DIR").unwrap());
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fs::File::create(out_dir.join("boring_static_wrapper.h"))
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.expect("Failed to create boring_static_wrapper.h")
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.write_all(INCLUDES.as_bytes())
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.expect("Failed to write contents to boring_static_wrapper.h");
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let mut bindgen_cmd = process::Command::new("bindgen");
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bindgen_cmd
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.arg("-o")
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.arg(out_dir.join("bindgen.rs"))
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// Must be a valid version from
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// https://docs.rs/bindgen/latest/bindgen/enum.RustTarget.html
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.arg("--rust-target=1.47")
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.arg("--ctypes-prefix=::libc")
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.arg("--raw-line=use libc::*;")
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.arg("--no-derive-default")
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.arg("--enable-function-attribute-detection")
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.arg("--default-macro-constant-type=signed")
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.arg("--rustified-enum=point_conversion_form_t")
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.arg("--allowlist-file=.*[/\\\\]openssl/[^/]+\\.h")
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.arg("--no-recursive-allowlist")
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.arg("--blocklist-function=BIO_vsnprintf")
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.arg("--blocklist-function=OPENSSL_vasprintf")
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.arg("--experimental")
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.arg("--wrap-static-fns")
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.arg("--wrap-static-fns-path")
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.arg(out_dir.join("boring_static_wrapper").display().to_string())
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.arg("--no-layout-tests")
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.arg(out_dir.join("boring_static_wrapper.h"))
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.arg("--")
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.arg(format!("--target={}", env::var("TARGET").unwrap()));
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for include_dir in include_dirs {
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bindgen_cmd.arg("-I").arg(include_dir.display().to_string());
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}
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let result = bindgen_cmd.status().expect("bindgen failed to execute");
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assert!(result.success());
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cc::Build::new()
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.file(out_dir.join("boring_static_wrapper.c"))
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.includes(include_dirs)
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.compile("boring_static_wrapper");
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}
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#[cfg(feature = "bindgen")]
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#[derive(Debug)]
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struct OpensslCallbacks;
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#[cfg(feature = "bindgen")]
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impl ParseCallbacks for OpensslCallbacks {
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// for now we'll continue hand-writing constants
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fn will_parse_macro(&self, _name: &str) -> MacroParsingBehavior {
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MacroParsingBehavior::Ignore
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}
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fn item_name(&self, original_item_name: &str) -> Option<String> {
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match original_item_name {
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// Our original definitions of these are wrong, so rename to avoid breakage
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"CRYPTO_EX_new"
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| "CRYPTO_EX_dup"
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| "CRYPTO_EX_free"
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| "BIO_meth_set_write"
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| "BIO_meth_set_read"
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| "BIO_meth_set_puts"
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| "BIO_meth_set_ctrl"
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| "BIO_meth_set_create"
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| "BIO_meth_set_destroy"
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| "CRYPTO_set_locking_callback"
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| "CRYPTO_set_id_callback"
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| "SSL_CTX_set_tmp_dh_callback"
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| "SSL_set_tmp_dh_callback"
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| "SSL_CTX_set_tmp_ecdh_callback"
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| "SSL_set_tmp_ecdh_callback"
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| "SSL_CTX_callback_ctrl"
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| "SSL_CTX_set_alpn_select_cb" => Some(format!("{}__fixed_rust", original_item_name)),
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_ => None,
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}
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}
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}
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