mirror of
https://github.com/matrix-construct/construct
synced 2024-11-16 15:00:51 +01:00
1626 lines
31 KiB
C++
1626 lines
31 KiB
C++
// Matrix Construct
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//
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies. The
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// full license for this software is available in the LICENSE file.
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#include <openssl/err.h>
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#include <openssl/sha.h>
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#include <openssl/ssl.h>
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#include <openssl/ec.h>
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#include <openssl/rsa.h>
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#include <openssl/x509.h>
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#include <openssl/evp.h>
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namespace ircd::openssl
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{
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template<class exception = openssl::error>
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[[noreturn]] static void throw_error(const ulong &);
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template<class exception = openssl::error>
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[[noreturn]] static void throw_error();
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template<class exception = openssl::error,
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int ERR_CODE = 0,
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class function,
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class... args>
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static int call(function&& f, args&&... a);
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// openssl.h
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//
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//
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// X509
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//
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namespace ircd::openssl
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{
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time_t get_time(const ASN1_TIME &);
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using x509_name_entry_closure = std::function<bool (const string_view &, const string_view &)>;
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bool until(const X509_NAME &name, const x509_name_entry_closure &);
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void append(X509_NAME &name, const string_view &key, const string_view &val);
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void append(X509_NAME &name, const json::object &entries);
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void append_entries(X509 &cert, const json::object &opts);
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}
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X509 &
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ircd::openssl::current_cert(X509_STORE_CTX &cx)
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{
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auto *const ret
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{
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X509_STORE_CTX_get_current_cert(&cx)
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};
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if(!ret)
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throw std::out_of_range{"No current certificate"};
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return *ret;
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}
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const X509 &
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ircd::openssl::current_cert(const X509_STORE_CTX &cx)
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{
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auto &mcx{const_cast<X509_STORE_CTX &>(cx)};
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const auto *const ret
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{
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X509_STORE_CTX_get_current_cert(&mcx)
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};
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if(!ret)
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throw std::out_of_range{"No current certificate"};
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return *ret;
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}
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uint
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ircd::openssl::get_error_depth(const X509_STORE_CTX &cx)
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{
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auto &mcx{const_cast<X509_STORE_CTX &>(cx)};
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const int ret
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{
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X509_STORE_CTX_get_error_depth(&mcx)
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};
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assert(ret >= 0);
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return ret;
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}
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const char *
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ircd::openssl::get_error_string(const X509_STORE_CTX &cx)
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{
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return cert_error_string(get_error(cx));
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}
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const char *
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ircd::openssl::cert_error_string(const long &n)
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{
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return X509_verify_cert_error_string(n);
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}
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int
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ircd::openssl::get_error(const X509_STORE_CTX &cx)
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{
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auto &mcx{const_cast<X509_STORE_CTX &>(cx)};
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return X509_STORE_CTX_get_error(&mcx);
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}
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X509 &
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ircd::openssl::peer_cert(SSL &ssl)
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{
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auto *const ret
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{
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SSL_get_peer_certificate(&ssl)
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};
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assert(ret);
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return *ret;
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}
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const X509 &
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ircd::openssl::peer_cert(const SSL &ssl)
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{
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const auto *const ret
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{
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SSL_get_peer_certificate(&ssl)
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};
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assert(ret);
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return *ret;
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}
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namespace ircd::openssl
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{
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static void genx509_readkeys(EVP_PKEY &, const json::object &);
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}
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ircd::string_view
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ircd::openssl::genX509_rsa(const mutable_buffer &out,
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const json::object &opts)
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{
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const custom_ptr<RSA> priv
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{
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RSA_new(), RSA_free
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};
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const custom_ptr<EVP_PKEY> pk
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{
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EVP_PKEY_new(), EVP_PKEY_free
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};
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set(*pk, *priv);
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genx509_readkeys(*pk, opts);
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check(*pk->pkey.rsa);
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return genX509(out, *pk, opts);
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}
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ircd::string_view
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ircd::openssl::genX509_ec(const mutable_buffer &out,
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const json::object &opts)
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{
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const custom_ptr<EC_KEY> priv
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{
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EC_KEY_new(), EC_KEY_free
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};
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const custom_ptr<EVP_PKEY> pk
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{
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EVP_PKEY_new(), EVP_PKEY_free
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};
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set(*pk, *priv);
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genx509_readkeys(*pk, opts);
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check(*pk->pkey.ec);
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return genX509(out, *pk, opts);
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}
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void
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ircd::openssl::genx509_readkeys(EVP_PKEY &pk,
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const json::object &opts)
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{
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const auto private_key_path
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{
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unquote(opts.at("tls_private_key_path"))
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};
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const auto public_key_path
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{
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unquote(opts.at("tls_public_key_path"))
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};
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bio::read_file(private_key_path, [&pk](const string_view &pem)
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{
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read_pem_priv(pk, pem);
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});
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bio::read_file(public_key_path, [&pk](const string_view &pem)
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{
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read_pem_pub(pk, pem);
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});
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}
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ircd::string_view
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ircd::openssl::genX509(const mutable_buffer &out,
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EVP_PKEY &pk,
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const json::object &opts)
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{
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const custom_ptr<X509> x509
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{
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X509_new(), X509_free
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};
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call(::X509_set_pubkey, x509.get(), &pk);
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append_entries(*x509, opts);
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call(::X509_sign, x509.get(), &pk, EVP_sha256());
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return write_pem(out, *x509);
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}
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std::string
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ircd::openssl::stringify(const X509 &cert_)
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{
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auto &cert{const_cast<X509 &>(cert_)};
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// issuer
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std::vector<json::member> issuer_json;
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X509_NAME *const issuer{X509_get_issuer_name(&cert)};
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until(*issuer, [&](const string_view &key, const string_view &val)
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{
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const json::member member{key, val};
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issuer_json.emplace_back(member);
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return true;
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});
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// subject
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std::vector<json::member> subject_json;
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X509_NAME *const subject{X509_get_subject_name(&cert)};
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until(*subject, [&](const string_view &key, const string_view &val)
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{
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const json::member member{key, val};
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subject_json.emplace_back(member);
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return true;
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});
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return json::strung{json::members
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{
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{ "issuer", { issuer_json.data(), issuer_json.size() } },
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{ "subject", { subject_json.data(), subject_json.size() } },
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{ "notBefore", not_before(cert) },
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{ "notAfter", not_after(cert) },
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}};
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}
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void
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ircd::openssl::append_entries(X509 &cert,
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const json::object &opts)
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{
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// version
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call(::X509_set_version, &cert, opts.get<long>("version", 2));
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// notBefore
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{
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const long value
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{
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opts.get<long>("notBefore", 0)
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};
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ASN1_TIME *const notBefore{X509_get_notBefore(&cert)};
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assert(notBefore != nullptr);
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X509_gmtime_adj(notBefore, value);
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}
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// notAfter
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{
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const long value
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{
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opts.get<long>("notAfter", 0)?:
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60 * 60 * 24 * opts.get<long>("days", 7L)
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};
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ASN1_TIME *const notAfter{X509_get_notAfter(&cert)};
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assert(notAfter != nullptr);
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X509_gmtime_adj(notAfter, value);
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}
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// subject
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if(opts.has("subject"))
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{
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const json::object subject_opts
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{
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opts["subject"]
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};
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X509_NAME *const subject
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{
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X509_get_subject_name(&cert)
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};
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assert(subject != nullptr);
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append(*subject, subject_opts);
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}
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// issuer
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if(opts.has("issuer"))
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{
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const json::object issuer_opts
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{
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opts["issuer"]
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};
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X509_NAME *const issuer
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{
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X509_get_issuer_name(&cert)
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};
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assert(issuer != nullptr);
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append(*issuer, issuer_opts);
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}
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else if(opts.has("subject")) // self-signed; issuer is subject
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{
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X509_NAME *const subject
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{
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X509_get_subject_name(&cert)
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};
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assert(subject != nullptr);
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call(::X509_set_issuer_name, &cert, subject);
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}
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}
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void
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ircd::openssl::append(X509_NAME &name,
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const json::object &entries)
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{
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for(const auto &member : entries)
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append(name, unquote(member.first), unquote(member.second));
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}
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void
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ircd::openssl::append(X509_NAME &name,
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const string_view &key,
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const string_view &val)
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try
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{
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call(::X509_NAME_add_entry_by_txt,
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&name,
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std::string{key}.c_str(), // key (has to be null terminated)
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MBSTRING_ASC, // type
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(const uint8_t *)val.data(), // data
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val.size(), // len
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-1, // loc (-1 = append)
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0); // set (0 = new RDN created)
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}
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catch(const error &e)
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{
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throw error
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{
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"Failed to append X509 NAME entry '%s' (%zu bytes): %s",
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key,
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val.size(),
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e.what()
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};
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}
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bool
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ircd::openssl::until(const X509_NAME &name_,
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const x509_name_entry_closure &closure)
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{
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const auto name(const_cast<X509_NAME *>(&name_));
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const auto cnt(X509_NAME_entry_count(name));
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for(auto i(0); i < cnt; ++i)
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{
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const auto entry(X509_NAME_get_entry(name, i));
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const auto obj(X509_NAME_ENTRY_get_object(entry));
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thread_local char keybuf[128];
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const ssize_t keylen(OBJ_obj2txt(keybuf, sizeof(keybuf), obj, 0));
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if(unlikely(keylen < 0))
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continue;
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thread_local char valbuf[1024];
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const ssize_t vallen(X509_NAME_get_text_by_OBJ(name, obj, valbuf, sizeof(valbuf)));
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if(unlikely(vallen < 0))
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continue;
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const string_view key{keybuf, size_t(keylen)};
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const string_view val{valbuf, size_t(vallen)};
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if(!closure(key, val))
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return false;
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}
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return true;
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}
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time_t
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ircd::openssl::not_before(const X509 &cert_)
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{
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auto &cert{const_cast<X509 &>(cert_)};
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ASN1_TIME *const notBefore{X509_get_notBefore(&cert)};
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return get_time(*notBefore);
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}
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time_t
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ircd::openssl::not_after(const X509 &cert_)
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{
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auto &cert{const_cast<X509 &>(cert_)};
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ASN1_TIME *const notAfter{X509_get_notAfter(&cert)};
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return get_time(*notAfter);
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}
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ircd::string_view
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ircd::openssl::subject_common_name(const mutable_buffer &out,
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const X509 &cert)
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{
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X509_NAME *const subject
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{
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X509_get_subject_name(const_cast<X509 *>(&cert))
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};
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if(!subject)
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return {};
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const auto len
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{
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X509_NAME_get_text_by_NID(subject, NID_commonName, data(out), size(out))
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};
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// NID_commonName does not exist in subject.
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if(len < 0)
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return {};
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// Terminating NULL is written to buffer but is not counted in len.
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assert(size_t(len) < size(out));
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return { data(out), size_t(len) };
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}
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ircd::string_view
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ircd::openssl::print_subject(const mutable_buffer &buf,
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const string_view &pem,
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ulong flags)
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{
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const custom_ptr<X509> x509
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{
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X509_new(), X509_free
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};
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return print_subject(buf, read_pem(*x509, pem), flags);
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}
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ircd::string_view
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ircd::openssl::print_subject(const mutable_buffer &buf,
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const X509 &cert,
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ulong flags)
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{
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if(flags == ulong(-1))
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flags = XN_FLAG_ONELINE;
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else
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flags = 0;
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const X509_NAME *const subject
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{
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X509_get_subject_name(const_cast<X509 *>(&cert))
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};
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return bio::write(buf, [&subject, &flags]
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(BIO *const &bio)
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{
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X509_NAME_print_ex(bio, const_cast<X509_NAME *>(subject), 0, flags);
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});
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}
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ircd::string_view
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ircd::openssl::printX509(const mutable_buffer &buf,
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const string_view &pem,
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ulong flags)
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{
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const custom_ptr<X509> x509
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{
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X509_new(), X509_free
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};
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return print(buf, read_pem(*x509, pem), flags);
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}
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ircd::string_view
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ircd::openssl::print(const mutable_buffer &buf,
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const X509 &cert,
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ulong flags)
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{
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if(flags == ulong(-1))
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flags = XN_FLAG_ONELINE;
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else
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flags = 0;
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return bio::write(buf, [&cert, &flags]
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(BIO *const &bio)
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{
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X509_print_ex(bio, const_cast<X509 *>(&cert), 0, flags);
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});
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}
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ircd::const_buffer
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ircd::openssl::cert2d(const mutable_buffer &out,
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const string_view &pem)
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{
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const custom_ptr<X509> x509
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{
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X509_new(), X509_free
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};
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return i2d(out, read_pem(*x509, pem));
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}
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X509 &
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ircd::openssl::read_pem(X509 &out_,
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const string_view &pem)
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{
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X509 *ret{nullptr}, *out{&out_};
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bio::read(pem, [&ret, &out]
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(BIO *const &bio)
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{
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ret = PEM_read_bio_X509(bio, &out, nullptr, nullptr);
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});
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if(unlikely(ret != out))
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throw error
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{
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"Failed to read X509 PEM @ %p (len: %zu)", pem.data(), pem.length()
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};
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return *ret;
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}
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ircd::string_view
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ircd::openssl::write_pem(const mutable_buffer &out,
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const X509 &cert)
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{
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return bio::write(out, [&cert]
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(BIO *const &bio)
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{
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call(::PEM_write_bio_X509, bio, const_cast<X509 *>(&cert));
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});
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}
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ircd::const_buffer
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ircd::openssl::i2d(const mutable_buffer &buf,
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const X509 &_cert)
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{
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auto &cert
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{
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const_cast<X509 &>(_cert)
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};
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const int len
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{
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i2d_X509(&cert, nullptr)
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};
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if(unlikely(len < 0))
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throw_error();
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if(unlikely(size(buf) < size_t(len)))
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throw error
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{
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"DER requires a %zu byte buffer, you supplied %zu bytes", len, size(buf)
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};
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auto *out(reinterpret_cast<uint8_t *>(data(buf)));
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const const_buffer ret
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{
|
|
data(buf), size_t(i2d_X509(&cert, &out))
|
|
};
|
|
|
|
if(unlikely(size(ret) != size_t(len)))
|
|
throw error();
|
|
|
|
assert(out - reinterpret_cast<uint8_t *>(data(buf)) == len);
|
|
return ret;
|
|
}
|
|
|
|
time_t
|
|
ircd::openssl::get_time(const ASN1_TIME &t)
|
|
{
|
|
int pday, psec;
|
|
ASN1_TIME_diff(&pday, &psec, nullptr, &t);
|
|
const time_t sec
|
|
{
|
|
pday * 60L * 60L * 24L + psec
|
|
};
|
|
|
|
return ircd::time() + sec;
|
|
}
|
|
|
|
//
|
|
// EC
|
|
//
|
|
|
|
namespace ircd::openssl
|
|
{
|
|
void ec_init();
|
|
void ec_fini() noexcept;
|
|
}
|
|
|
|
const EC_GROUP *
|
|
ircd::openssl::secp256k1
|
|
{};
|
|
|
|
void
|
|
ircd::openssl::ec_init()
|
|
{
|
|
EC_GROUP *_secp256k1;
|
|
if(!(_secp256k1 = EC_GROUP_new_by_curve_name(OBJ_sn2nid("secp256k1"))))
|
|
throw error{"Failed to initialize EC_GROUP secp256k1"};
|
|
|
|
EC_GROUP_set_asn1_flag(_secp256k1, OPENSSL_EC_NAMED_CURVE);
|
|
EC_GROUP_set_point_conversion_form(_secp256k1, POINT_CONVERSION_COMPRESSED);
|
|
secp256k1 = _secp256k1;
|
|
}
|
|
|
|
void
|
|
ircd::openssl::ec_fini()
|
|
noexcept
|
|
{
|
|
EC_GROUP_free(const_cast<EC_GROUP *>(secp256k1));
|
|
}
|
|
|
|
void
|
|
ircd::openssl::genec(const string_view &skfile,
|
|
const string_view &pkfile,
|
|
const EC_GROUP *const &group)
|
|
{
|
|
const custom_ptr<EC_KEY> key
|
|
{
|
|
EC_KEY_new(), EC_KEY_free
|
|
};
|
|
|
|
const custom_ptr<EVP_PKEY> pk
|
|
{
|
|
EVP_PKEY_new(), EVP_PKEY_free
|
|
};
|
|
|
|
const auto write_priv{[&pk](const mutable_buffer &out)
|
|
{
|
|
return write_pem_priv(out, *pk);
|
|
}};
|
|
|
|
const auto write_pub{[&pk](const mutable_buffer &out)
|
|
{
|
|
return write_pem_pub(out, *pk);
|
|
}};
|
|
|
|
assert(group);
|
|
assert(EC_GROUP_get_asn1_flag(group) & OPENSSL_EC_NAMED_CURVE);
|
|
call(::EC_KEY_set_group, key.get(), group);
|
|
call(::EC_KEY_generate_key, key.get());
|
|
assert(EC_KEY_get0_public_key(key.get()));
|
|
set(*pk, *key);
|
|
bio::write_file(skfile, write_priv);
|
|
bio::write_file(pkfile, write_pub);
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::openssl::print(const mutable_buffer &buf,
|
|
const EC_KEY &key,
|
|
const off_t &offset)
|
|
{
|
|
return bio::write(buf, [&key, &offset]
|
|
(BIO *const &bio)
|
|
{
|
|
call(::EC_KEY_print, bio, &key, offset);
|
|
});
|
|
}
|
|
|
|
void
|
|
ircd::openssl::check(const EC_KEY &key)
|
|
{
|
|
if(!check(key, std::nothrow))
|
|
throw error{"Invalid Elliptic Curve Key"};
|
|
}
|
|
|
|
bool
|
|
ircd::openssl::check(const EC_KEY &key,
|
|
const std::nothrow_t)
|
|
{
|
|
return EC_KEY_check_key(&key) == 1;
|
|
}
|
|
|
|
//
|
|
// RSA
|
|
//
|
|
|
|
void
|
|
ircd::openssl::genrsa(const string_view &skfile,
|
|
const string_view &pkfile,
|
|
const json::object &opts)
|
|
{
|
|
const auto bits
|
|
{
|
|
opts.get<uint>("bits", 2048)
|
|
};
|
|
|
|
const auto e
|
|
{
|
|
opts.get<uint>("e", 65537)
|
|
};
|
|
|
|
const custom_ptr<RSA> rsa
|
|
{
|
|
RSA_new(), RSA_free
|
|
};
|
|
|
|
const custom_ptr<EVP_PKEY> pk
|
|
{
|
|
EVP_PKEY_new(), EVP_PKEY_free
|
|
};
|
|
|
|
genrsa(*rsa, bits, e);
|
|
check(*rsa);
|
|
set(*pk, *rsa);
|
|
|
|
bio::write_file(skfile, [&pk]
|
|
(const mutable_buffer &out)
|
|
{
|
|
return write_pem_priv(out, *pk);
|
|
});
|
|
|
|
bio::write_file(pkfile, [&pk]
|
|
(const mutable_buffer &out)
|
|
{
|
|
return write_pem_pub(out, *pk);
|
|
});
|
|
}
|
|
|
|
namespace ircd::openssl
|
|
{
|
|
static int genrsa_cb(const int, const int, BN_GENCB *const);
|
|
}
|
|
|
|
RSA &
|
|
ircd::openssl::genrsa(RSA &out,
|
|
const uint &bits,
|
|
const uint &exp)
|
|
{
|
|
BN_GENCB gencb{0};
|
|
void *const arg{nullptr}; // privdata passed to cb
|
|
BN_GENCB_set(&gencb, &ircd::openssl::genrsa_cb, arg);
|
|
|
|
bignum e{exp};
|
|
call(::RSA_generate_key_ex, &out, bits, e, &gencb);
|
|
|
|
return out;
|
|
}
|
|
|
|
// This callback can be used to integrate generating with ircd::ctx
|
|
// or ctx::offload/thread or some status update. For now we just eat
|
|
// the milliseconds of prime generation on main.
|
|
// return false causes call(RSA_generate_key_ex) to throw
|
|
int
|
|
ircd::openssl::genrsa_cb(const int stat,
|
|
const int ith,
|
|
BN_GENCB *const ctx)
|
|
{
|
|
assert(ctx != nullptr);
|
|
auto &arg{ctx->arg};
|
|
switch(stat)
|
|
{
|
|
case 0: // generating i-th potential prime
|
|
return true;
|
|
|
|
case 1: // testing i-th potential prime
|
|
return true;
|
|
|
|
case 2: // found i-th potential prime but rejected for RSA
|
|
return true;
|
|
|
|
case 3: switch(ith) // found for RSA...
|
|
{
|
|
case 0: // found P
|
|
return true;
|
|
|
|
case 1: // found Q
|
|
return true;
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::openssl::print(const mutable_buffer &buf,
|
|
const RSA &rsa,
|
|
const off_t &offset)
|
|
{
|
|
return bio::write(buf, [&rsa, &offset]
|
|
(BIO *const &bio)
|
|
{
|
|
RSA_print(bio, const_cast<RSA *>(&rsa), offset);
|
|
});
|
|
}
|
|
|
|
size_t
|
|
ircd::openssl::size(const RSA &key)
|
|
{
|
|
assert(key.n != nullptr);
|
|
return RSA_size(&key);
|
|
}
|
|
|
|
void
|
|
ircd::openssl::check(const RSA &key)
|
|
{
|
|
if(call<error, -1>(::RSA_check_key, const_cast<RSA *>(&key)) == 0)
|
|
throw error{"Invalid RSA"};
|
|
}
|
|
|
|
bool
|
|
ircd::openssl::check(const RSA &key,
|
|
const std::nothrow_t)
|
|
{
|
|
return RSA_check_key(const_cast<RSA *>(&key)) == 1;
|
|
}
|
|
|
|
//
|
|
// Envelope
|
|
//
|
|
|
|
void
|
|
ircd::openssl::set(EVP_PKEY &out,
|
|
RSA &in)
|
|
{
|
|
call(::EVP_PKEY_set1_RSA, &out, &in);
|
|
}
|
|
|
|
void
|
|
ircd::openssl::set(EVP_PKEY &out,
|
|
EC_KEY &in)
|
|
{
|
|
call(::EVP_PKEY_set1_EC_KEY, &out, &in);
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::openssl::write_pem_priv(const mutable_buffer &out,
|
|
const EVP_PKEY &evp)
|
|
{
|
|
EVP_CIPHER *const enc{nullptr};
|
|
|
|
uint8_t *const kstr{nullptr};
|
|
const int klen{0};
|
|
|
|
pem_password_cb *const pwcb{nullptr};
|
|
void *const u{nullptr};
|
|
|
|
auto *const p{const_cast<EVP_PKEY *>(&evp)};
|
|
return bio::write(out, [&p, &enc, &kstr, &klen, &pwcb, &u]
|
|
(BIO *const &bio)
|
|
{
|
|
switch(p->type)
|
|
{
|
|
case EVP_PKEY_RSA:
|
|
call(::PEM_write_bio_RSAPrivateKey, bio, p->pkey.rsa, enc, kstr, klen, pwcb, u);
|
|
break;
|
|
|
|
case EVP_PKEY_EC:
|
|
call(::PEM_write_bio_ECPrivateKey, bio, p->pkey.ec, enc, kstr, klen, pwcb, u);
|
|
break;
|
|
|
|
default:
|
|
call(::PEM_write_bio_PrivateKey, bio, p, enc, kstr, klen, pwcb, u);
|
|
break;
|
|
}
|
|
});
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::openssl::write_pem_pub(const mutable_buffer &out,
|
|
const EVP_PKEY &evp)
|
|
{
|
|
auto *const p{const_cast<EVP_PKEY *>(&evp)};
|
|
return bio::write(out, [&p]
|
|
(BIO *const &bio)
|
|
{
|
|
switch(p->type)
|
|
{
|
|
case EVP_PKEY_RSA:
|
|
call(::PEM_write_bio_RSAPublicKey, bio, p->pkey.rsa);
|
|
break;
|
|
|
|
case EVP_PKEY_EC:
|
|
call(::PEM_write_bio_EC_PUBKEY, bio, p->pkey.ec);
|
|
break;
|
|
|
|
default:
|
|
call(::PEM_write_bio_PUBKEY, bio, p);
|
|
break;
|
|
}
|
|
});
|
|
}
|
|
|
|
EVP_PKEY &
|
|
ircd::openssl::read_pem_priv(EVP_PKEY &out_,
|
|
const string_view &pem)
|
|
{
|
|
void *ret{nullptr};
|
|
EVP_PKEY *out{&out_};
|
|
|
|
pem_password_cb *const pwcb{nullptr};
|
|
void *const u{nullptr};
|
|
|
|
bio::read(pem, [&ret, &out, &pwcb, &u]
|
|
(BIO *const &bio)
|
|
{
|
|
switch(out->type)
|
|
{
|
|
case EVP_PKEY_RSA:
|
|
ret = PEM_read_bio_RSAPrivateKey(bio, &out->pkey.rsa, pwcb, u);
|
|
break;
|
|
|
|
case EVP_PKEY_EC:
|
|
ret = PEM_read_bio_ECPrivateKey(bio, &out->pkey.ec, pwcb, u);
|
|
EC_KEY_set_asn1_flag(out->pkey.ec, OPENSSL_EC_NAMED_CURVE);
|
|
break;
|
|
|
|
default:
|
|
ret = PEM_read_bio_PrivateKey(bio, &out, pwcb, u);
|
|
break;
|
|
}
|
|
});
|
|
|
|
if(unlikely(!ret))
|
|
throw error
|
|
{
|
|
"Failed to read Private Key PEM @ %p (len: %zu)", pem.data(), pem.length()
|
|
};
|
|
|
|
return *out;
|
|
}
|
|
|
|
EVP_PKEY &
|
|
ircd::openssl::read_pem_pub(EVP_PKEY &out_,
|
|
const string_view &pem)
|
|
{
|
|
void *ret{nullptr};
|
|
EVP_PKEY *out{&out_};
|
|
|
|
pem_password_cb *const pwcb{nullptr};
|
|
void *const u{nullptr};
|
|
|
|
bio::read(pem, [&ret, &out, &pwcb, &u]
|
|
(BIO *const &bio)
|
|
{
|
|
switch(out->type)
|
|
{
|
|
case EVP_PKEY_RSA:
|
|
ret = PEM_read_bio_RSAPublicKey(bio, &out->pkey.rsa, pwcb, u);
|
|
break;
|
|
|
|
case EVP_PKEY_EC:
|
|
ret = PEM_read_bio_EC_PUBKEY(bio, &out->pkey.ec, pwcb, u);
|
|
EC_KEY_set_asn1_flag(out->pkey.ec, OPENSSL_EC_NAMED_CURVE);
|
|
break;
|
|
|
|
default:
|
|
ret = PEM_read_bio_PUBKEY(bio, &out, pwcb, u);
|
|
break;
|
|
}
|
|
});
|
|
|
|
if(unlikely(!ret))
|
|
throw error
|
|
{
|
|
"Failed to read Public Key PEM @ %p (len: %zu)", pem.data(), pem.length()
|
|
};
|
|
|
|
return *out;
|
|
}
|
|
|
|
//
|
|
// lib generale
|
|
//
|
|
|
|
void
|
|
ircd::openssl::clear_error()
|
|
{
|
|
ERR_clear_error();
|
|
}
|
|
|
|
ulong
|
|
ircd::openssl::get_error()
|
|
{
|
|
return ERR_get_error();
|
|
}
|
|
|
|
ulong
|
|
ircd::openssl::peek_error()
|
|
{
|
|
return ERR_peek_error();
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::openssl::error_string(const mutable_buffer &buf,
|
|
const ulong &e)
|
|
{
|
|
ERR_error_string_n(e, data(buf), size(buf));
|
|
return { data(buf), strnlen(data(buf), size(buf)) };
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::openssl::version()
|
|
{
|
|
return SSLeay_version(SSLEAY_VERSION);
|
|
}
|
|
|
|
//
|
|
// bio
|
|
//
|
|
|
|
void
|
|
ircd::openssl::bio::read_file(const string_view &path,
|
|
const cb_closure &closure)
|
|
{
|
|
const size_t size
|
|
{
|
|
fs::size(path)
|
|
};
|
|
|
|
const custom_ptr<void> buf
|
|
{
|
|
OPENSSL_malloc_locked(size), [&size]
|
|
(void *const buf)
|
|
{
|
|
OPENSSL_cleanse(buf, size);
|
|
OPENSSL_free_locked(buf);
|
|
}
|
|
};
|
|
|
|
const mutable_buffer mb
|
|
{
|
|
reinterpret_cast<char *>(buf.get()), size
|
|
};
|
|
|
|
closure(fs::read(path, mb));
|
|
}
|
|
|
|
void
|
|
ircd::openssl::bio::write_file(const string_view &path,
|
|
const mb_closure &closure,
|
|
const size_t &size)
|
|
{
|
|
const custom_ptr<void> buf
|
|
{
|
|
OPENSSL_malloc_locked(size), [&size]
|
|
(void *const buf)
|
|
{
|
|
OPENSSL_cleanse(buf, size);
|
|
OPENSSL_free_locked(buf);
|
|
}
|
|
};
|
|
|
|
const mutable_buffer mb
|
|
{
|
|
reinterpret_cast<char *>(buf.get()), size
|
|
};
|
|
|
|
fs::overwrite(path, closure(mb));
|
|
}
|
|
|
|
void
|
|
ircd::openssl::bio::read(const const_buffer &buf,
|
|
const closure &closure)
|
|
{
|
|
const custom_ptr<BIO> bp
|
|
{
|
|
BIO_new_mem_buf(data(buf), size(buf)), BIO_free
|
|
};
|
|
|
|
closure(bp.get());
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::openssl::bio::write(const mutable_buffer &buf,
|
|
const closure &closure)
|
|
{
|
|
const custom_ptr<BIO> bp
|
|
{
|
|
BIO_new(BIO_s_mem()), BIO_free
|
|
};
|
|
|
|
//TODO: XXX: BAD: if the buffer is too small:
|
|
// I saw this try to realloc() our buffer. It did not respect
|
|
// the max size. I'd expect either truncation or error, so wtf?
|
|
|
|
BUF_MEM bm {0};
|
|
bm.data = data(buf);
|
|
bm.max = size(buf);
|
|
call(::BIO_ctrl, bp.get(), BIO_C_SET_BUF_MEM, BIO_NOCLOSE, &bm);
|
|
|
|
closure(bp.get());
|
|
|
|
assert(size_t(bm.length) <= size(buf));
|
|
return { data(buf), size_t(bm.length) };
|
|
}
|
|
|
|
//
|
|
// bignum
|
|
//
|
|
|
|
ircd::string_view
|
|
ircd::openssl::u2a(const mutable_buffer &out,
|
|
const BIGNUM *const &a)
|
|
{
|
|
const unique_buffer<mutable_buffer> tmp
|
|
{
|
|
size(a)
|
|
};
|
|
|
|
return ircd::u2a(out, data(tmp, a));
|
|
}
|
|
|
|
ircd::mutable_buffer
|
|
ircd::openssl::data(const mutable_buffer &out,
|
|
const BIGNUM *const &a)
|
|
{
|
|
if(!a)
|
|
return { data(out), 0UL };
|
|
|
|
if(unlikely(size(out) < size(a)))
|
|
throw buffer_error
|
|
{
|
|
"buffer size %zu short for BIGNUM of size %zu", size(out), size(a)
|
|
};
|
|
|
|
const auto len
|
|
{
|
|
BN_bn2bin(a, reinterpret_cast<uint8_t *>(data(out)))
|
|
};
|
|
|
|
reverse(out);
|
|
assert(len <= ssize_t(size(out)));
|
|
return { data(out), size_t(len) };
|
|
}
|
|
|
|
size_t
|
|
ircd::openssl::size(const BIGNUM *const &a)
|
|
{
|
|
return BN_num_bytes(a);
|
|
}
|
|
|
|
//
|
|
// bignum::bignum
|
|
//
|
|
|
|
ircd::openssl::bignum::bignum(const uint128_t &val)
|
|
:bignum
|
|
{
|
|
const_buffer
|
|
{
|
|
reinterpret_cast<const char *>(&val), sizeof(val)
|
|
}
|
|
}
|
|
{
|
|
}
|
|
|
|
ircd::openssl::bignum::bignum(const const_buffer &bin)
|
|
:a{[&bin]
|
|
{
|
|
// Our binary buffer is little endian.
|
|
thread_local char tmp[64_KiB];
|
|
const critical_assertion ca;
|
|
const mutable_buffer buf{tmp, size(bin)};
|
|
if(unlikely(size(buf) > sizeof(tmp)))
|
|
throw buffer_error
|
|
{
|
|
"buffer input of %zu for bignum > tmp %zu", size(bin), sizeof(tmp)
|
|
};
|
|
|
|
reverse(buf, bin);
|
|
return BN_bin2bn(reinterpret_cast<uint8_t *>(data(buf)), size(buf), nullptr);
|
|
}()}
|
|
{
|
|
if(unlikely(!a))
|
|
throw error{"Error creating bignum from binary buffer..."};
|
|
}
|
|
|
|
ircd::openssl::bignum::bignum(const BIGNUM &a)
|
|
:a{BN_dup(&a)}
|
|
{
|
|
}
|
|
|
|
ircd::openssl::bignum::bignum(const bignum &o)
|
|
:a{BN_dup(o.a)}
|
|
{
|
|
}
|
|
|
|
ircd::openssl::bignum::bignum(bignum &&o)
|
|
noexcept
|
|
:a{std::move(o.a)}
|
|
{
|
|
o.a = nullptr;
|
|
}
|
|
|
|
ircd::openssl::bignum &
|
|
ircd::openssl::bignum::operator=(const bignum &o)
|
|
{
|
|
if(unlikely(!BN_copy(a, o.a)))
|
|
throw error
|
|
{
|
|
"Failed to copy bignum from %p to %p", &o, this
|
|
};
|
|
|
|
return *this;
|
|
}
|
|
|
|
ircd::openssl::bignum &
|
|
ircd::openssl::bignum::operator=(bignum &&o)
|
|
noexcept
|
|
{
|
|
this->~bignum();
|
|
a = std::move(o.a);
|
|
o.a = nullptr;
|
|
return *this;
|
|
}
|
|
|
|
ircd::openssl::bignum::~bignum()
|
|
noexcept
|
|
{
|
|
BN_free(a);
|
|
}
|
|
|
|
ircd::openssl::bignum::operator
|
|
ircd::uint128_t()
|
|
const
|
|
{
|
|
uint128_t ret{0};
|
|
const mutable_buffer buf
|
|
{
|
|
reinterpret_cast<char *>(&ret), sizeof(ret)
|
|
};
|
|
|
|
data(buf, a);
|
|
return ret;
|
|
}
|
|
|
|
ircd::openssl::bignum::operator
|
|
BIGNUM &()
|
|
{
|
|
assert(a != nullptr);
|
|
return *a;
|
|
}
|
|
|
|
ircd::openssl::bignum::operator
|
|
BIGNUM *const &()
|
|
{
|
|
return a;
|
|
}
|
|
|
|
ircd::openssl::bignum::operator
|
|
BIGNUM **()
|
|
{
|
|
return &a;
|
|
}
|
|
|
|
ircd::openssl::bignum::operator
|
|
const BIGNUM &()
|
|
const
|
|
{
|
|
assert(a != nullptr);
|
|
return *a;
|
|
}
|
|
|
|
ircd::openssl::bignum::operator
|
|
const BIGNUM *()
|
|
const
|
|
{
|
|
return a;
|
|
}
|
|
|
|
size_t
|
|
ircd::openssl::bignum::bytes()
|
|
const
|
|
{
|
|
return BN_num_bytes(get());
|
|
}
|
|
|
|
size_t
|
|
ircd::openssl::bignum::bits()
|
|
const
|
|
{
|
|
return BN_num_bits(get());
|
|
}
|
|
|
|
BIGNUM *
|
|
ircd::openssl::bignum::release()
|
|
{
|
|
BIGNUM *const a{this->a};
|
|
this->a = nullptr;
|
|
return a;
|
|
}
|
|
|
|
BIGNUM *
|
|
ircd::openssl::bignum::get()
|
|
{
|
|
return a;
|
|
}
|
|
|
|
const BIGNUM *
|
|
ircd::openssl::bignum::get()
|
|
const
|
|
{
|
|
return a;
|
|
}
|
|
|
|
//
|
|
// init
|
|
//
|
|
|
|
ircd::openssl::init::init()
|
|
{
|
|
OPENSSL_init();
|
|
ERR_load_crypto_strings();
|
|
ERR_load_ERR_strings();
|
|
ec_init();
|
|
|
|
/*
|
|
const auto their_id_callback
|
|
{
|
|
CRYPTO_THREADID_get_callback()
|
|
};
|
|
|
|
assert(their_id_callback == nullptr);
|
|
CRYPTO_THREADID_set_callback(locking::id_callback);
|
|
*/
|
|
|
|
/*
|
|
const auto their_locking_callback
|
|
{
|
|
CRYPTO_get_locking_callback()
|
|
};
|
|
|
|
if(their_locking_callback)
|
|
throw error("Overwrite their locking callback @ %p ???",
|
|
their_locking_callback);
|
|
|
|
CRYPTO_set_locking_callback(locking::callback);
|
|
*/
|
|
}
|
|
|
|
ircd::openssl::init::~init()
|
|
{
|
|
ec_fini();
|
|
|
|
//assert(CRYPTO_get_locking_callback() == locking::callback);
|
|
//assert(CRYPTO_THREADID_get_callback() == locking::id_callback);
|
|
|
|
ERR_free_strings();
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// hash.h
|
|
//
|
|
|
|
namespace ircd::crh
|
|
{
|
|
static void finalize(struct sha256::ctx *const &, const mutable_buffer &);
|
|
}
|
|
|
|
struct ircd::crh::sha256::ctx
|
|
:SHA256_CTX
|
|
{
|
|
ctx();
|
|
~ctx() noexcept;
|
|
};
|
|
|
|
ircd::crh::sha256::ctx::ctx()
|
|
{
|
|
openssl::call(::SHA256_Init, this);
|
|
}
|
|
|
|
ircd::crh::sha256::ctx::~ctx()
|
|
noexcept
|
|
{
|
|
}
|
|
|
|
ircd::crh::sha256::sha256()
|
|
:ctx{std::make_unique<struct ctx>()}
|
|
{
|
|
}
|
|
|
|
/// One-shot functor. Immediately calls update(); no output
|
|
ircd::crh::sha256::sha256(const const_buffer &in)
|
|
:sha256{}
|
|
{
|
|
update(in);
|
|
}
|
|
|
|
/// One-shot functor. Immediately calls operator().
|
|
ircd::crh::sha256::sha256(const mutable_buffer &out,
|
|
const const_buffer &in)
|
|
:sha256{}
|
|
{
|
|
operator()(out, in);
|
|
}
|
|
|
|
ircd::crh::sha256::~sha256()
|
|
noexcept
|
|
{
|
|
}
|
|
|
|
void
|
|
ircd::crh::sha256::update(const const_buffer &buf)
|
|
{
|
|
openssl::call(::SHA256_Update, ctx.get(), data(buf), size(buf));
|
|
}
|
|
|
|
void
|
|
ircd::crh::sha256::digest(const mutable_buffer &buf)
|
|
const
|
|
{
|
|
auto copy(*ctx);
|
|
crh::finalize(©, buf);
|
|
}
|
|
|
|
void
|
|
ircd::crh::sha256::finalize(const mutable_buffer &buf)
|
|
{
|
|
crh::finalize(ctx.get(), buf);
|
|
}
|
|
|
|
size_t
|
|
ircd::crh::sha256::length()
|
|
const
|
|
{
|
|
return digest_size;
|
|
}
|
|
|
|
void
|
|
ircd::crh::finalize(struct sha256::ctx *const &ctx,
|
|
const mutable_buffer &buf)
|
|
{
|
|
uint8_t *const md
|
|
{
|
|
reinterpret_cast<uint8_t *>(data(buf))
|
|
};
|
|
|
|
openssl::call(::SHA256_Final, md, ctx);
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Internal section for OpenSSL locking.
|
|
//
|
|
// This is delicate because we really shouldn't need this, and as a library it
|
|
// is not nice to other libraries to assume this interface for ourselves.
|
|
// Nevertheless, I have specified it here foremost for debugging and if at some
|
|
// point in the future we really require it.
|
|
//
|
|
|
|
namespace ircd::openssl::locking
|
|
{
|
|
const int READ_LOCK { CRYPTO_LOCK + CRYPTO_READ };
|
|
const int WRITE_LOCK { CRYPTO_LOCK + CRYPTO_WRITE };
|
|
const int READ_UNLOCK { CRYPTO_UNLOCK + CRYPTO_READ };
|
|
const int WRITE_UNLOCK { CRYPTO_UNLOCK + CRYPTO_WRITE };
|
|
|
|
std::shared_mutex mutex[CRYPTO_NUM_LOCKS];
|
|
|
|
static ircd::string_view reflect(const int &mode);
|
|
static std::string debug(const int, const int, const char *const, const int);
|
|
static void callback(const int, const int, const char *const, const int) noexcept;
|
|
static void id_callback(CRYPTO_THREADID *const tid) noexcept;
|
|
}
|
|
|
|
void
|
|
ircd::openssl::locking::id_callback(CRYPTO_THREADID *const tid)
|
|
noexcept try
|
|
{
|
|
const auto ttid
|
|
{
|
|
std::this_thread::get_id()
|
|
};
|
|
|
|
const auto otid
|
|
{
|
|
uint32_t(std::hash<std::thread::id>{}(ttid)) % std::numeric_limits<uint32_t>::max()
|
|
};
|
|
|
|
// log::debug("OpenSSL thread id callback: setting %p to %u",
|
|
// (const void *)tid,
|
|
// otid);
|
|
|
|
CRYPTO_THREADID_set_numeric(tid, otid);
|
|
}
|
|
catch(const std::exception &e)
|
|
{
|
|
log::critical("OpenSSL thread id callback (tid=%p): %s",
|
|
(const void *)tid,
|
|
e.what());
|
|
|
|
ircd::terminate();
|
|
}
|
|
|
|
void
|
|
ircd::openssl::locking::callback(const int mode,
|
|
const int num,
|
|
const char *const file,
|
|
const int line)
|
|
noexcept try
|
|
{
|
|
log::debug("OpenSSL: %s", debug(mode, num, file, line));
|
|
|
|
auto &mutex
|
|
{
|
|
locking::mutex[num]
|
|
};
|
|
|
|
switch(mode)
|
|
{
|
|
case CRYPTO_LOCK:
|
|
case WRITE_LOCK: mutex.lock(); break;
|
|
case READ_LOCK: mutex.lock_shared(); break;
|
|
case CRYPTO_UNLOCK:
|
|
case WRITE_UNLOCK: mutex.unlock(); break;
|
|
case READ_UNLOCK: mutex.unlock_shared(); break;
|
|
}
|
|
}
|
|
catch(const std::exception &e)
|
|
{
|
|
log::critical("OpenSSL locking callback (%s): %s",
|
|
debug(mode, num, file, line),
|
|
e.what());
|
|
|
|
ircd::terminate();
|
|
}
|
|
|
|
std::string
|
|
ircd::openssl::locking::debug(const int mode,
|
|
const int num,
|
|
const char *const file,
|
|
const int line)
|
|
{
|
|
return fmt::snstringf
|
|
{
|
|
1024, "[%02d] %-15s main thread: %d ctx: %u %s %d",
|
|
num,
|
|
reflect(mode),
|
|
is_main_thread(),
|
|
ctx::id(),
|
|
file,
|
|
line
|
|
};
|
|
}
|
|
|
|
ircd::string_view
|
|
ircd::openssl::locking::reflect(const int &mode)
|
|
{
|
|
switch(mode)
|
|
{
|
|
case CRYPTO_LOCK: return "LOCK";
|
|
case WRITE_LOCK: return "WRITE_LOCK";
|
|
case READ_LOCK: return "READ_LOCK";
|
|
case CRYPTO_UNLOCK: return "UNLOCK";
|
|
case WRITE_UNLOCK: return "WRITE_UNLOCK";
|
|
case READ_UNLOCK: return "READ_UNLOCK";
|
|
}
|
|
|
|
return "?????";
|
|
}
|
|
|
|
//
|
|
// call()
|
|
//
|
|
|
|
template<class exception,
|
|
int ERR_CODE,
|
|
class function,
|
|
class... args>
|
|
static int
|
|
ircd::openssl::call(function&& f,
|
|
args&&... a)
|
|
{
|
|
const auto ret
|
|
{
|
|
f(std::forward<args>(a)...)
|
|
};
|
|
|
|
if(unlikely(ret == ERR_CODE))
|
|
throw_error<exception>();
|
|
|
|
return ret;
|
|
}
|
|
|
|
template<class exception>
|
|
static void
|
|
ircd::openssl::throw_error(const unsigned long &code)
|
|
{
|
|
const auto &msg
|
|
{
|
|
ERR_reason_error_string(code)?: "UNKNOWN ERROR"
|
|
};
|
|
|
|
throw exception
|
|
{
|
|
"OpenSSL #%lu: %s", code, msg
|
|
};
|
|
}
|
|
|
|
template<class exception>
|
|
static void
|
|
ircd::openssl::throw_error()
|
|
{
|
|
const auto code
|
|
{
|
|
get_error()
|
|
};
|
|
|
|
throw_error(code);
|
|
}
|