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Merge pull request #1573 from sfackler/bindgen
Initial sketch of optional bindgen support
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,125 @@ | ||
| use bindgen::callbacks::{MacroParsingBehavior, ParseCallbacks}; | ||
| use bindgen::RustTarget; | ||
| use std::env; | ||
| use std::path::PathBuf; | ||
|
|
||
| const INCLUDES: &str = " | ||
| #include <openssl/aes.h> | ||
| #include <openssl/asn1.h> | ||
| #include <openssl/bio.h> | ||
| #include <openssl/comp.h> | ||
| #include <openssl/conf.h> | ||
| #include <openssl/crypto.h> | ||
| #include <openssl/dh.h> | ||
| #include <openssl/dsa.h> | ||
| #include <openssl/ec.h> | ||
| #include <openssl/err.h> | ||
| #include <openssl/evp.h> | ||
| #include <openssl/hmac.h> | ||
| #include <openssl/objects.h> | ||
| #include <openssl/ocsp.h> | ||
| #include <openssl/opensslv.h> | ||
| #include <openssl/pem.h> | ||
| #include <openssl/pkcs12.h> | ||
| #include <openssl/pkcs7.h> | ||
| #include <openssl/rand.h> | ||
| #include <openssl/rsa.h> | ||
| #include <openssl/safestack.h> | ||
| #include <openssl/sha.h> | ||
| #include <openssl/ssl.h> | ||
| #include <openssl/stack.h> | ||
| #include <openssl/x509.h> | ||
| #include <openssl/x509_vfy.h> | ||
| #include <openssl/x509v3.h> | ||
| // this must be included after ssl.h for libressl! | ||
| #include <openssl/srtp.h> | ||
| #if !defined(LIBRESSL_VERSION_NUMBER) | ||
| #include <openssl/cms.h> | ||
| #endif | ||
| #if !defined(LIBRESSL_VERSION_NUMBER) && OPENSSL_VERSION_NUMBER >= 0x010100000 | ||
| #include <openssl/kdf.h> | ||
| #endif | ||
| "; | ||
|
|
||
| pub fn run(include_dirs: &[PathBuf]) { | ||
| let out_dir = PathBuf::from(env::var_os("OUT_DIR").unwrap()); | ||
|
|
||
| let mut builder = bindgen::builder() | ||
| .parse_callbacks(Box::new(OpensslCallbacks)) | ||
| .rust_target(RustTarget::Stable_1_47) | ||
| .ctypes_prefix("::libc") | ||
| .raw_line("use libc::*;") | ||
| .raw_line("type evp_pkey_st = EVP_PKEY;") | ||
| .allowlist_file(".*/openssl/[^/]+\\.h") | ||
| .allowlist_recursively(false) | ||
| // libc is missing pthread_once_t on macOS | ||
| .blocklist_type("CRYPTO_ONCE") | ||
| .blocklist_function("CRYPTO_THREAD_run_once") | ||
| // we don't want to mess with va_list | ||
| .blocklist_function("BIO_vprintf") | ||
| .blocklist_function("BIO_vsnprintf") | ||
| .blocklist_function("ERR_vset_error") | ||
| .blocklist_function("ERR_add_error_vdata") | ||
| .blocklist_function("EVP_KDF_vctrl") | ||
| .blocklist_type("OSSL_FUNC_core_vset_error_fn") | ||
| .blocklist_type("OSSL_FUNC_BIO_vprintf_fn") | ||
| .blocklist_type("OSSL_FUNC_BIO_vsnprintf_fn") | ||
| // Maintain compatibility for existing enum definitions | ||
| .rustified_enum("point_conversion_form_t") | ||
| // Maintain compatibility for pre-union definitions | ||
| .blocklist_type("GENERAL_NAME") | ||
| .blocklist_type("GENERAL_NAME_st") | ||
| .blocklist_type("EVP_PKEY") | ||
| .blocklist_type("evp_pkey_st") | ||
| .layout_tests(false) | ||
| .header_contents("includes.h", INCLUDES); | ||
|
|
||
| for include_dir in include_dirs { | ||
| builder = builder | ||
| .clang_arg("-I") | ||
| .clang_arg(include_dir.display().to_string()); | ||
| } | ||
|
|
||
| builder | ||
| .generate() | ||
| .unwrap() | ||
| .write_to_file(out_dir.join("bindgen.rs")) | ||
| .unwrap(); | ||
| } | ||
|
|
||
| #[derive(Debug)] | ||
| struct OpensslCallbacks; | ||
|
|
||
| impl ParseCallbacks for OpensslCallbacks { | ||
| // for now we'll continue hand-writing constants | ||
| fn will_parse_macro(&self, _name: &str) -> MacroParsingBehavior { | ||
| MacroParsingBehavior::Ignore | ||
| } | ||
|
|
||
| fn item_name(&self, original_item_name: &str) -> Option<String> { | ||
| match original_item_name { | ||
| // Our original definitions of these are wrong, so rename to avoid breakage | ||
| "CRYPTO_EX_new" | ||
| | "CRYPTO_EX_dup" | ||
| | "CRYPTO_EX_free" | ||
| | "BIO_meth_set_write" | ||
| | "BIO_meth_set_read" | ||
| | "BIO_meth_set_puts" | ||
| | "BIO_meth_set_ctrl" | ||
| | "BIO_meth_set_create" | ||
| | "BIO_meth_set_destroy" | ||
| | "CRYPTO_set_locking_callback" | ||
| | "CRYPTO_set_id_callback" | ||
| | "SSL_CTX_set_tmp_dh_callback" | ||
| | "SSL_set_tmp_dh_callback" | ||
| | "SSL_CTX_set_tmp_ecdh_callback" | ||
| | "SSL_set_tmp_ecdh_callback" | ||
| | "SSL_CTX_callback_ctrl" | ||
| | "SSL_CTX_set_alpn_select_cb" => Some(format!("{}__fixed_rust", original_item_name)), | ||
| _ => None, | ||
| } | ||
| } | ||
| } |
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