1 files changed, 500 insertions, 0 deletions
diff --git a/src/shrpx_mruby_module_env.cc b/src/shrpx_mruby_module_env.cc
new file mode 100644
index 0000000..5ebd9c0
--- /dev/null
+++ b/src/shrpx_mruby_module_env.cc
@@ -0,0 +1,500 @@
+/*
+ * nghttp2 - HTTP/2 C Library
+ *
+ * Copyright (c) 2015 Tatsuhiro Tsujikawa
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+#include "shrpx_mruby_module_env.h"
+
+#include <mruby/variable.h>
+#include <mruby/string.h>
+#include <mruby/hash.h>
+
+#include "shrpx_downstream.h"
+#include "shrpx_upstream.h"
+#include "shrpx_client_handler.h"
+#include "shrpx_mruby.h"
+#include "shrpx_mruby_module.h"
+#include "shrpx_log.h"
+#include "shrpx_tls.h"
+
+namespace shrpx {
+
+namespace mruby {
+
+namespace {
+mrb_value env_init(mrb_state *mrb, mrb_value self) { return self; }
+} // namespace
+
+namespace {
+mrb_value env_get_req(mrb_state *mrb, mrb_value self) {
+  return mrb_iv_get(mrb, self, mrb_intern_lit(mrb, "req"));
+}
+} // namespace
+
+namespace {
+mrb_value env_get_resp(mrb_state *mrb, mrb_value self) {
+  return mrb_iv_get(mrb, self, mrb_intern_lit(mrb, "resp"));
+}
+} // namespace
+
+namespace {
+mrb_value env_get_ctx(mrb_state *mrb, mrb_value self) {
+  auto data = reinterpret_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+
+  auto dsym = intern_ptr(mrb, downstream);
+
+  auto ctx = mrb_iv_get(mrb, self, dsym);
+  if (mrb_nil_p(ctx)) {
+    ctx = mrb_hash_new(mrb);
+    mrb_iv_set(mrb, self, dsym, ctx);
+  }
+
+  return ctx;
+}
+} // namespace
+
+namespace {
+mrb_value env_get_phase(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+
+  return mrb_fixnum_value(data->phase);
+}
+} // namespace
+
+namespace {
+mrb_value env_get_remote_addr(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+
+  auto &ipaddr = handler->get_ipaddr();
+
+  return mrb_str_new(mrb, ipaddr.c_str(), ipaddr.size());
+}
+} // namespace
+
+namespace {
+mrb_value env_get_server_port(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+  auto faddr = handler->get_upstream_addr();
+
+  return mrb_fixnum_value(faddr->port);
+}
+} // namespace
+
+namespace {
+mrb_value env_get_server_addr(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+  auto faddr = handler->get_upstream_addr();
+
+  return mrb_str_new(mrb, faddr->host.c_str(), faddr->host.size());
+}
+} // namespace
+
+namespace {
+mrb_value env_get_tls_used(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+
+  return handler->get_ssl() ? mrb_true_value() : mrb_false_value();
+}
+} // namespace
+
+namespace {
+mrb_value env_get_tls_sni(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+  auto sni = handler->get_tls_sni();
+
+  return mrb_str_new(mrb, sni.c_str(), sni.size());
+}
+} // namespace
+
+namespace {
+mrb_value env_get_tls_client_fingerprint_md(mrb_state *mrb, const EVP_MD *md) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+  auto ssl = handler->get_ssl();
+
+  if (!ssl) {
+    return mrb_str_new_static(mrb, "", 0);
+  }
+
+#if OPENSSL_3_0_0_API
+  auto x = SSL_get0_peer_certificate(ssl);
+#else  // !OPENSSL_3_0_0_API
+  auto x = SSL_get_peer_certificate(ssl);
+#endif // !OPENSSL_3_0_0_API
+  if (!x) {
+    return mrb_str_new_static(mrb, "", 0);
+  }
+
+  // Currently the largest hash value is SHA-256, which is 32 bytes.
+  std::array<uint8_t, 32> buf;
+  auto slen = tls::get_x509_fingerprint(buf.data(), buf.size(), x, md);
+#if !OPENSSL_3_0_0_API
+  X509_free(x);
+#endif // !OPENSSL_3_0_0_API
+  if (slen == -1) {
+    mrb_raise(mrb, E_RUNTIME_ERROR, "could not compute client fingerprint");
+  }
+
+  // TODO Use template version of format_hex
+  auto &balloc = downstream->get_block_allocator();
+  auto f = util::format_hex(balloc,
+                            StringRef{std::begin(buf), std::begin(buf) + slen});
+  return mrb_str_new(mrb, f.c_str(), f.size());
+}
+} // namespace
+
+namespace {
+mrb_value env_get_tls_client_fingerprint_sha256(mrb_state *mrb,
+                                                mrb_value self) {
+  return env_get_tls_client_fingerprint_md(mrb, EVP_sha256());
+}
+} // namespace
+
+namespace {
+mrb_value env_get_tls_client_fingerprint_sha1(mrb_state *mrb, mrb_value self) {
+  return env_get_tls_client_fingerprint_md(mrb, EVP_sha1());
+}
+} // namespace
+
+namespace {
+mrb_value env_get_tls_client_subject_name(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+  auto ssl = handler->get_ssl();
+
+  if (!ssl) {
+    return mrb_str_new_static(mrb, "", 0);
+  }
+
+#if OPENSSL_3_0_0_API
+  auto x = SSL_get0_peer_certificate(ssl);
+#else  // !OPENSSL_3_0_0_API
+  auto x = SSL_get_peer_certificate(ssl);
+#endif // !OPENSSL_3_0_0_API
+  if (!x) {
+    return mrb_str_new_static(mrb, "", 0);
+  }
+
+  auto &balloc = downstream->get_block_allocator();
+  auto name = tls::get_x509_subject_name(balloc, x);
+#if !OPENSSL_3_0_0_API
+  X509_free(x);
+#endif // !OPENSSL_3_0_0_API
+  return mrb_str_new(mrb, name.c_str(), name.size());
+}
+} // namespace
+
+namespace {
+mrb_value env_get_tls_client_issuer_name(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+  auto ssl = handler->get_ssl();
+
+  if (!ssl) {
+    return mrb_str_new_static(mrb, "", 0);
+  }
+
+#if OPENSSL_3_0_0_API
+  auto x = SSL_get0_peer_certificate(ssl);
+#else  // !OPENSSL_3_0_0_API
+  auto x = SSL_get_peer_certificate(ssl);
+#endif // !OPENSSL_3_0_0_API
+  if (!x) {
+    return mrb_str_new_static(mrb, "", 0);
+  }
+
+  auto &balloc = downstream->get_block_allocator();
+  auto name = tls::get_x509_issuer_name(balloc, x);
+#if !OPENSSL_3_0_0_API
+  X509_free(x);
+#endif // !OPENSSL_3_0_0_API
+  return mrb_str_new(mrb, name.c_str(), name.size());
+}
+} // namespace
+
+namespace {
+mrb_value env_get_tls_client_serial(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+  auto ssl = handler->get_ssl();
+
+  if (!ssl) {
+    return mrb_str_new_static(mrb, "", 0);
+  }
+
+#if OPENSSL_3_0_0_API
+  auto x = SSL_get0_peer_certificate(ssl);
+#else  // !OPENSSL_3_0_0_API
+  auto x = SSL_get_peer_certificate(ssl);
+#endif // !OPENSSL_3_0_0_API
+  if (!x) {
+    return mrb_str_new_static(mrb, "", 0);
+  }
+
+  auto &balloc = downstream->get_block_allocator();
+  auto sn = tls::get_x509_serial(balloc, x);
+#if !OPENSSL_3_0_0_API
+  X509_free(x);
+#endif // !OPENSSL_3_0_0_API
+  return mrb_str_new(mrb, sn.c_str(), sn.size());
+}
+} // namespace
+
+namespace {
+mrb_value env_get_tls_client_not_before(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+  auto ssl = handler->get_ssl();
+
+  if (!ssl) {
+    return mrb_fixnum_value(0);
+  }
+
+#if OPENSSL_3_0_0_API
+  auto x = SSL_get0_peer_certificate(ssl);
+#else  // !OPENSSL_3_0_0_API
+  auto x = SSL_get_peer_certificate(ssl);
+#endif // !OPENSSL_3_0_0_API
+  if (!x) {
+    return mrb_fixnum_value(0);
+  }
+
+  time_t t;
+  if (tls::get_x509_not_before(t, x) != 0) {
+    t = 0;
+  }
+
+#if !OPENSSL_3_0_0_API
+  X509_free(x);
+#endif // !OPENSSL_3_0_0_API
+
+  return mrb_fixnum_value(t);
+}
+} // namespace
+
+namespace {
+mrb_value env_get_tls_client_not_after(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+  auto ssl = handler->get_ssl();
+
+  if (!ssl) {
+    return mrb_fixnum_value(0);
+  }
+
+#if OPENSSL_3_0_0_API
+  auto x = SSL_get0_peer_certificate(ssl);
+#else  // !OPENSSL_3_0_0_API
+  auto x = SSL_get_peer_certificate(ssl);
+#endif // !OPENSSL_3_0_0_API
+  if (!x) {
+    return mrb_fixnum_value(0);
+  }
+
+  time_t t;
+  if (tls::get_x509_not_after(t, x) != 0) {
+    t = 0;
+  }
+
+#if !OPENSSL_3_0_0_API
+  X509_free(x);
+#endif // !OPENSSL_3_0_0_API
+
+  return mrb_fixnum_value(t);
+}
+} // namespace
+
+namespace {
+mrb_value env_get_tls_cipher(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+  auto ssl = handler->get_ssl();
+
+  if (!ssl) {
+    return mrb_str_new_static(mrb, "", 0);
+  }
+
+  return mrb_str_new_cstr(mrb, SSL_get_cipher_name(ssl));
+}
+} // namespace
+
+namespace {
+mrb_value env_get_tls_protocol(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+  auto ssl = handler->get_ssl();
+
+  if (!ssl) {
+    return mrb_str_new_static(mrb, "", 0);
+  }
+
+  return mrb_str_new_cstr(mrb, nghttp2::tls::get_tls_protocol(ssl));
+}
+} // namespace
+
+namespace {
+mrb_value env_get_tls_session_id(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+  auto ssl = handler->get_ssl();
+
+  if (!ssl) {
+    return mrb_str_new_static(mrb, "", 0);
+  }
+
+  auto session = SSL_get_session(ssl);
+  if (!session) {
+    return mrb_str_new_static(mrb, "", 0);
+  }
+
+  unsigned int session_id_length = 0;
+  auto session_id = SSL_SESSION_get_id(session, &session_id_length);
+
+  // TODO Use template version of util::format_hex.
+  auto &balloc = downstream->get_block_allocator();
+  auto id = util::format_hex(balloc, StringRef{session_id, session_id_length});
+  return mrb_str_new(mrb, id.c_str(), id.size());
+}
+} // namespace
+
+namespace {
+mrb_value env_get_tls_session_reused(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+  auto ssl = handler->get_ssl();
+
+  if (!ssl) {
+    return mrb_false_value();
+  }
+
+  return SSL_session_reused(ssl) ? mrb_true_value() : mrb_false_value();
+}
+} // namespace
+
+namespace {
+mrb_value env_get_alpn(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+  auto alpn = handler->get_alpn();
+  return mrb_str_new(mrb, alpn.c_str(), alpn.size());
+}
+} // namespace
+
+namespace {
+mrb_value env_get_tls_handshake_finished(mrb_state *mrb, mrb_value self) {
+  auto data = static_cast<MRubyAssocData *>(mrb->ud);
+  auto downstream = data->downstream;
+  auto upstream = downstream->get_upstream();
+  auto handler = upstream->get_client_handler();
+  auto conn = handler->get_connection();
+  return SSL_is_init_finished(conn->tls.ssl) ? mrb_true_value()
+                                             : mrb_false_value();
+}
+} // namespace
+
+void init_env_class(mrb_state *mrb, RClass *module) {
+  auto env_class =
+      mrb_define_class_under(mrb, module, "Env", mrb->object_class);
+
+  mrb_define_method(mrb, env_class, "initialize", env_init, MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "req", env_get_req, MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "resp", env_get_resp, MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "ctx", env_get_ctx, MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "phase", env_get_phase, MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "remote_addr", env_get_remote_addr,
+                    MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "server_addr", env_get_server_addr,
+                    MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "server_port", env_get_server_port,
+                    MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "tls_used", env_get_tls_used,
+                    MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "tls_sni", env_get_tls_sni,
+                    MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "tls_client_fingerprint_sha256",
+                    env_get_tls_client_fingerprint_sha256, MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "tls_client_fingerprint_sha1",
+                    env_get_tls_client_fingerprint_sha1, MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "tls_client_issuer_name",
+                    env_get_tls_client_issuer_name, MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "tls_client_subject_name",
+                    env_get_tls_client_subject_name, MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "tls_client_serial",
+                    env_get_tls_client_serial, MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "tls_client_not_before",
+                    env_get_tls_client_not_before, MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "tls_client_not_after",
+                    env_get_tls_client_not_after, MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "tls_cipher", env_get_tls_cipher,
+                    MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "tls_protocol", env_get_tls_protocol,
+                    MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "tls_session_id", env_get_tls_session_id,
+                    MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "tls_session_reused",
+                    env_get_tls_session_reused, MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "alpn", env_get_alpn, MRB_ARGS_NONE());
+  mrb_define_method(mrb, env_class, "tls_handshake_finished",
+                    env_get_tls_handshake_finished, MRB_ARGS_NONE());
+}
+
+} // namespace mruby
+
+} // namespace shrpx