src: shift even moar x509 to ncrypto

deps/ncrypto/ncrypto.cc

@@ -908,6 +908,24 @@ X509View::CheckMatch X509View::checkIp(const std::string_view ip, int flags) con
   }
 }
 
+X509View X509View::From(const SSLPointer& ssl) {
+  ClearErrorOnReturn clear_error_on_return;
+  if (!ssl) return {};
+  return X509View(SSL_get_certificate(ssl.get()));
+}
+
+X509View X509View::From(const SSLCtxPointer& ctx) {
+  ClearErrorOnReturn clear_error_on_return;
+  if (!ctx) return {};
+  return X509View(SSL_CTX_get0_certificate(ctx.get()));
+}
+
+X509Pointer X509View::clone() const {
+  ClearErrorOnReturn clear_error_on_return;
+  if (!cert_) return {};
+  return X509Pointer(X509_dup(const_cast<X509*>(cert_)));
+}
+
 Result<X509Pointer, int> X509Pointer::Parse(Buffer<const unsigned char> buffer) {
   ClearErrorOnReturn clearErrorOnReturn;
   BIOPointer bio(BIO_new_mem_buf(buffer.data, buffer.len));
@@ -922,4 +940,27 @@ Result<X509Pointer, int> X509Pointer::Parse(Buffer<const unsigned char> buffer)
 
   return Result<X509Pointer, int>(ERR_get_error());
 }
+
+
+X509Pointer X509Pointer::IssuerFrom(const SSLPointer& ssl, const X509View& view) {
+  return IssuerFrom(SSL_get_SSL_CTX(ssl.get()), view);
+}
+
+X509Pointer X509Pointer::IssuerFrom(const SSL_CTX* ctx, const X509View& cert) {
+  X509_STORE* store = SSL_CTX_get_cert_store(ctx);
+  DeleteFnPtr<X509_STORE_CTX, X509_STORE_CTX_free> store_ctx(
+      X509_STORE_CTX_new());
+  X509Pointer result;
+  X509* issuer;
+  if (store_ctx.get() != nullptr &&
+      X509_STORE_CTX_init(store_ctx.get(), store, nullptr, nullptr) == 1 &&
+      X509_STORE_CTX_get1_issuer(&issuer, store_ctx.get(), cert.get()) == 1) {
+    result.reset(issuer);
+  }
+  return result;
+}
+
+X509Pointer X509Pointer::PeerFrom(const SSLPointer& ssl) {
+  return X509Pointer(SSL_get_peer_certificate(ssl.get()));
+}
 }  // namespace ncrypto

deps/ncrypto/ncrypto.h

@@ -311,14 +311,21 @@ class BignumPointer final {
   DeleteFnPtr<BIGNUM, BN_clear_free> bn_;
 };
 
+class X509Pointer;
+
 class X509View final {
  public:
+  static X509View From(const SSLPointer& ssl);
+  static X509View From(const SSLCtxPointer& ctx);
+
   X509View() = default;
   inline explicit X509View(const X509* cert) : cert_(cert) {}
   X509View(const X509View& other) = default;
   X509View& operator=(const X509View& other) = default;
   NCRYPTO_DISALLOW_MOVE(X509View)
 
+  inline X509* get() const { return const_cast<X509*>(cert_); }
+
   inline bool operator==(std::nullptr_t) noexcept { return cert_ == nullptr; }
   inline operator bool() const { return cert_ != nullptr; }
 
@@ -340,6 +347,8 @@ class X509View final {
   bool checkPrivateKey(const EVPKeyPointer& pkey) const;
   bool checkPublicKey(const EVPKeyPointer& pkey) const;
 
+  X509Pointer clone() const;
+
   enum class CheckMatch {
     NO_MATCH,
     MATCH,
@@ -358,6 +367,9 @@ class X509View final {
 class X509Pointer final {
  public:
   static Result<X509Pointer, int> Parse(Buffer<const unsigned char> buffer);
+  static X509Pointer IssuerFrom(const SSLPointer& ssl, const X509View& view);
+  static X509Pointer IssuerFrom(const SSL_CTX* ctx, const X509View& view);
+  static X509Pointer PeerFrom(const SSLPointer& ssl);
 
   X509Pointer() = default;
   explicit X509Pointer(X509* cert);