validate canons without yatest_common

2 files changed, 118 insertions, 0 deletions

diff --git a/library/cpp/openssl/big_integer/big_integer.cpp b/library/cpp/openssl/big_integer/big_integer.cpp
new file mode 100644
index 0000000000..9b6802369a
--- /dev/null
+++ b/library/cpp/openssl/big_integer/big_integer.cpp
@@ -0,0 +1,61 @@
+#include "big_integer.h"
+
+#include <util/generic/yexception.h>
+#include <util/generic/scope.h>
+#include <util/stream/output.h>
+
+#include <openssl/bn.h>
+
+using namespace NOpenSsl;
+
+TBigInteger::~TBigInteger() noexcept {
+    BN_free(Impl_);
+}
+
+TBigInteger TBigInteger::FromULong(ui64 value) {
+    TBigInteger result(BN_new());
+
+    Y_ENSURE(result.Impl(), "BN_new() failed");
+    Y_ENSURE(BN_set_word(result.Impl(), value) == 1, "BN_set_word() failed");
+
+    return result;
+}
+
+TBigInteger TBigInteger::FromRegion(const void* ptr, size_t len) {
+    auto result = BN_bin2bn((ui8*)(ptr), len, nullptr);
+
+    Y_ENSURE(result, "BN_bin2bn() failed");
+
+    return result;
+}
+
+int TBigInteger::Compare(const TBigInteger& a, const TBigInteger& b) noexcept {
+    return BN_cmp(a.Impl(), b.Impl());
+}
+
+size_t TBigInteger::NumBytes() const noexcept {
+    return BN_num_bytes(Impl_);
+}
+
+size_t TBigInteger::ToRegion(void* to) const noexcept {
+    const auto ret = BN_bn2bin(Impl_, (unsigned char*)to);
+
+    Y_VERIFY(ret >= 0, "it happens");
+
+    return ret;
+}
+
+TString TBigInteger::ToDecimalString() const {
+    auto res = BN_bn2dec(Impl_);
+
+    Y_DEFER {
+        OPENSSL_free(res);
+    };
+
+    return res;
+}
+
+template <>
+void Out<TBigInteger>(IOutputStream& out, const TBigInteger& bi) {
+    out << bi.ToDecimalString();
+}
diff --git a/library/cpp/openssl/big_integer/big_integer.h b/library/cpp/openssl/big_integer/big_integer.h
new file mode 100644
index 0000000000..07763c5e13
--- /dev/null
+++ b/library/cpp/openssl/big_integer/big_integer.h
@@ -0,0 +1,57 @@
+#pragma once
+
+#include <util/generic/ptr.h>
+#include <util/generic/strbuf.h>
+#include <util/generic/utility.h>
+#include <util/generic/string.h>
+
+struct bignum_st;
+
+namespace NOpenSsl {
+    class TBigInteger {
+        inline TBigInteger(bignum_st* impl) noexcept
+            : Impl_(impl)
+        {
+        }
+
+        static int Compare(const TBigInteger& a, const TBigInteger& b) noexcept;
+
+    public:
+        inline TBigInteger(TBigInteger&& other) noexcept {
+            Swap(other);
+        }
+
+        ~TBigInteger() noexcept;
+
+        static TBigInteger FromULong(ui64 value);
+        static TBigInteger FromRegion(const void* ptr, size_t len);
+
+        inline const bignum_st* Impl() const noexcept {
+            return Impl_;
+        }
+
+        inline bignum_st* Impl() noexcept {
+            return Impl_;
+        }
+
+        inline void Swap(TBigInteger& other) noexcept {
+            DoSwap(Impl_, other.Impl_);
+        }
+
+        inline friend bool operator==(const TBigInteger& a, const TBigInteger& b) noexcept {
+            return Compare(a, b) == 0;
+        }
+
+        inline friend bool operator!=(const TBigInteger& a, const TBigInteger& b) noexcept {
+            return !(a == b);
+        }
+
+        size_t NumBytes() const noexcept;
+        size_t ToRegion(void* to) const noexcept;
+
+        TString ToDecimalString() const;
+
+    private:
+        bignum_st* Impl_ = nullptr;
+    };
+}