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-rw-r--r--src/shrpx_mruby_module_response.cc398
1 files changed, 398 insertions, 0 deletions
diff --git a/src/shrpx_mruby_module_response.cc b/src/shrpx_mruby_module_response.cc
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+/*
+ * 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_response.h"
+
+#include <mruby/variable.h>
+#include <mruby/string.h>
+#include <mruby/hash.h>
+#include <mruby/array.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 "util.h"
+#include "http2.h"
+
+namespace shrpx {
+
+namespace mruby {
+
+namespace {
+mrb_value response_init(mrb_state *mrb, mrb_value self) { return self; }
+} // namespace
+
+namespace {
+mrb_value response_get_http_version_major(mrb_state *mrb, mrb_value self) {
+ auto data = static_cast<MRubyAssocData *>(mrb->ud);
+ auto downstream = data->downstream;
+ const auto &resp = downstream->response();
+ return mrb_fixnum_value(resp.http_major);
+}
+} // namespace
+
+namespace {
+mrb_value response_get_http_version_minor(mrb_state *mrb, mrb_value self) {
+ auto data = static_cast<MRubyAssocData *>(mrb->ud);
+ auto downstream = data->downstream;
+ const auto &resp = downstream->response();
+ return mrb_fixnum_value(resp.http_minor);
+}
+} // namespace
+
+namespace {
+mrb_value response_get_status(mrb_state *mrb, mrb_value self) {
+ auto data = static_cast<MRubyAssocData *>(mrb->ud);
+ auto downstream = data->downstream;
+ const auto &resp = downstream->response();
+ return mrb_fixnum_value(resp.http_status);
+}
+} // namespace
+
+namespace {
+mrb_value response_set_status(mrb_state *mrb, mrb_value self) {
+ auto data = static_cast<MRubyAssocData *>(mrb->ud);
+ auto downstream = data->downstream;
+ auto &resp = downstream->response();
+
+ mrb_int status;
+ mrb_get_args(mrb, "i", &status);
+ // We don't support 1xx status code for mruby scripting yet.
+ if (status < 200 || status > 999) {
+ mrb_raise(mrb, E_RUNTIME_ERROR,
+ "invalid status; it should be [200, 999], inclusive");
+ }
+
+ resp.http_status = status;
+
+ return self;
+}
+} // namespace
+
+namespace {
+mrb_value response_get_headers(mrb_state *mrb, mrb_value self) {
+ auto data = static_cast<MRubyAssocData *>(mrb->ud);
+ auto downstream = data->downstream;
+ const auto &resp = downstream->response();
+
+ return create_headers_hash(mrb, resp.fs.headers());
+}
+} // namespace
+
+namespace {
+mrb_value response_mod_header(mrb_state *mrb, mrb_value self, bool repl) {
+ auto data = static_cast<MRubyAssocData *>(mrb->ud);
+ auto downstream = data->downstream;
+ auto &resp = downstream->response();
+ auto &balloc = downstream->get_block_allocator();
+
+ mrb_value key, values;
+ mrb_get_args(mrb, "So", &key, &values);
+
+ if (RSTRING_LEN(key) == 0) {
+ mrb_raise(mrb, E_RUNTIME_ERROR, "empty key is not allowed");
+ }
+
+ auto ai = mrb_gc_arena_save(mrb);
+
+ key = mrb_funcall(mrb, key, "downcase", 0);
+
+ auto keyref =
+ make_string_ref(balloc, StringRef{RSTRING_PTR(key),
+ static_cast<size_t>(RSTRING_LEN(key))});
+
+ mrb_gc_arena_restore(mrb, ai);
+
+ auto token = http2::lookup_token(keyref.byte(), keyref.size());
+
+ if (repl) {
+ size_t p = 0;
+ auto &headers = resp.fs.headers();
+ for (size_t i = 0; i < headers.size(); ++i) {
+ auto &kv = headers[i];
+ if (kv.name == keyref) {
+ continue;
+ }
+ if (i != p) {
+ headers[p] = std::move(kv);
+ }
+ ++p;
+ }
+ headers.resize(p);
+ }
+
+ if (mrb_array_p(values)) {
+ auto n = RARRAY_LEN(values);
+ for (int i = 0; i < n; ++i) {
+ auto value = mrb_ary_ref(mrb, values, i);
+ if (!mrb_string_p(value)) {
+ mrb_raise(mrb, E_RUNTIME_ERROR, "value must be string");
+ }
+
+ resp.fs.add_header_token(
+ keyref,
+ make_string_ref(balloc,
+ StringRef{RSTRING_PTR(value),
+ static_cast<size_t>(RSTRING_LEN(value))}),
+ false, token);
+ }
+ } else if (mrb_string_p(values)) {
+ resp.fs.add_header_token(
+ keyref,
+ make_string_ref(balloc,
+ StringRef{RSTRING_PTR(values),
+ static_cast<size_t>(RSTRING_LEN(values))}),
+ false, token);
+ } else {
+ mrb_raise(mrb, E_RUNTIME_ERROR, "value must be string");
+ }
+
+ return mrb_nil_value();
+}
+} // namespace
+
+namespace {
+mrb_value response_set_header(mrb_state *mrb, mrb_value self) {
+ return response_mod_header(mrb, self, true);
+}
+} // namespace
+
+namespace {
+mrb_value response_add_header(mrb_state *mrb, mrb_value self) {
+ return response_mod_header(mrb, self, false);
+}
+} // namespace
+
+namespace {
+mrb_value response_clear_headers(mrb_state *mrb, mrb_value self) {
+ auto data = static_cast<MRubyAssocData *>(mrb->ud);
+ auto downstream = data->downstream;
+ auto &resp = downstream->response();
+
+ resp.fs.clear_headers();
+
+ return mrb_nil_value();
+}
+} // namespace
+
+namespace {
+mrb_value response_return(mrb_state *mrb, mrb_value self) {
+ auto data = static_cast<MRubyAssocData *>(mrb->ud);
+ auto downstream = data->downstream;
+ auto &req = downstream->request();
+ auto &resp = downstream->response();
+ int rv;
+
+ auto &balloc = downstream->get_block_allocator();
+
+ if (downstream->get_response_state() == DownstreamState::MSG_COMPLETE) {
+ mrb_raise(mrb, E_RUNTIME_ERROR, "response has already been committed");
+ }
+
+ const char *val;
+ mrb_int vallen;
+ mrb_get_args(mrb, "|s", &val, &vallen);
+
+ const uint8_t *body = nullptr;
+ size_t bodylen = 0;
+
+ if (resp.http_status == 0) {
+ resp.http_status = 200;
+ }
+
+ if (downstream->expect_response_body() && vallen > 0) {
+ body = reinterpret_cast<const uint8_t *>(val);
+ bodylen = vallen;
+ }
+
+ auto cl = resp.fs.header(http2::HD_CONTENT_LENGTH);
+
+ if (resp.http_status == 204 ||
+ (resp.http_status == 200 && req.method == HTTP_CONNECT)) {
+ if (cl) {
+ // Delete content-length here
+ http2::erase_header(cl);
+ }
+
+ resp.fs.content_length = -1;
+ } else {
+ auto content_length = util::make_string_ref_uint(balloc, vallen);
+
+ if (cl) {
+ cl->value = content_length;
+ } else {
+ resp.fs.add_header_token(StringRef::from_lit("content-length"),
+ content_length, false, http2::HD_CONTENT_LENGTH);
+ }
+
+ resp.fs.content_length = vallen;
+ }
+
+ auto date = resp.fs.header(http2::HD_DATE);
+ if (!date) {
+ auto lgconf = log_config();
+ lgconf->update_tstamp(std::chrono::system_clock::now());
+ resp.fs.add_header_token(StringRef::from_lit("date"),
+ make_string_ref(balloc, lgconf->tstamp->time_http),
+ false, http2::HD_DATE);
+ }
+
+ auto upstream = downstream->get_upstream();
+
+ rv = upstream->send_reply(downstream, body, bodylen);
+ if (rv != 0) {
+ mrb_raise(mrb, E_RUNTIME_ERROR, "could not send response");
+ }
+
+ auto handler = upstream->get_client_handler();
+
+ handler->signal_write();
+
+ return self;
+}
+} // namespace
+
+namespace {
+mrb_value response_send_info(mrb_state *mrb, mrb_value self) {
+ auto data = static_cast<MRubyAssocData *>(mrb->ud);
+ auto downstream = data->downstream;
+ auto &resp = downstream->response();
+ int rv;
+
+ if (downstream->get_response_state() == DownstreamState::MSG_COMPLETE) {
+ mrb_raise(mrb, E_RUNTIME_ERROR, "response has already been committed");
+ }
+
+ mrb_int http_status;
+ mrb_value hash;
+ mrb_get_args(mrb, "iH", &http_status, &hash);
+
+ if (http_status / 100 != 1) {
+ mrb_raise(mrb, E_RUNTIME_ERROR,
+ "status_code must be in range [100, 199], inclusive");
+ }
+
+ auto &balloc = downstream->get_block_allocator();
+
+ auto keys = mrb_hash_keys(mrb, hash);
+ auto keyslen = RARRAY_LEN(keys);
+
+ for (int i = 0; i < keyslen; ++i) {
+ auto key = mrb_ary_ref(mrb, keys, i);
+ if (!mrb_string_p(key)) {
+ mrb_raise(mrb, E_RUNTIME_ERROR, "key must be string");
+ }
+
+ auto values = mrb_hash_get(mrb, hash, key);
+
+ auto ai = mrb_gc_arena_save(mrb);
+
+ key = mrb_funcall(mrb, key, "downcase", 0);
+
+ auto keyref = make_string_ref(
+ balloc,
+ StringRef{RSTRING_PTR(key), static_cast<size_t>(RSTRING_LEN(key))});
+
+ mrb_gc_arena_restore(mrb, ai);
+
+ auto token = http2::lookup_token(keyref.byte(), keyref.size());
+
+ if (mrb_array_p(values)) {
+ auto n = RARRAY_LEN(values);
+ for (int i = 0; i < n; ++i) {
+ auto value = mrb_ary_ref(mrb, values, i);
+ if (!mrb_string_p(value)) {
+ mrb_raise(mrb, E_RUNTIME_ERROR, "value must be string");
+ }
+
+ resp.fs.add_header_token(
+ keyref,
+ make_string_ref(balloc,
+ StringRef{RSTRING_PTR(value),
+ static_cast<size_t>(RSTRING_LEN(value))}),
+ false, token);
+ }
+ } else if (mrb_string_p(values)) {
+ resp.fs.add_header_token(
+ keyref,
+ make_string_ref(balloc,
+ StringRef{RSTRING_PTR(values),
+ static_cast<size_t>(RSTRING_LEN(values))}),
+ false, token);
+ } else {
+ mrb_raise(mrb, E_RUNTIME_ERROR, "value must be string");
+ }
+ }
+
+ resp.http_status = http_status;
+
+ auto upstream = downstream->get_upstream();
+
+ rv = upstream->on_downstream_header_complete(downstream);
+ if (rv != 0) {
+ mrb_raise(mrb, E_RUNTIME_ERROR, "could not send non-final response");
+ }
+
+ auto handler = upstream->get_client_handler();
+
+ handler->signal_write();
+
+ return self;
+}
+} // namespace
+
+void init_response_class(mrb_state *mrb, RClass *module) {
+ auto response_class =
+ mrb_define_class_under(mrb, module, "Response", mrb->object_class);
+
+ mrb_define_method(mrb, response_class, "initialize", response_init,
+ MRB_ARGS_NONE());
+ mrb_define_method(mrb, response_class, "http_version_major",
+ response_get_http_version_major, MRB_ARGS_NONE());
+ mrb_define_method(mrb, response_class, "http_version_minor",
+ response_get_http_version_minor, MRB_ARGS_NONE());
+ mrb_define_method(mrb, response_class, "status", response_get_status,
+ MRB_ARGS_NONE());
+ mrb_define_method(mrb, response_class, "status=", response_set_status,
+ MRB_ARGS_REQ(1));
+ mrb_define_method(mrb, response_class, "headers", response_get_headers,
+ MRB_ARGS_NONE());
+ mrb_define_method(mrb, response_class, "add_header", response_add_header,
+ MRB_ARGS_REQ(2));
+ mrb_define_method(mrb, response_class, "set_header", response_set_header,
+ MRB_ARGS_REQ(2));
+ mrb_define_method(mrb, response_class, "clear_headers",
+ response_clear_headers, MRB_ARGS_NONE());
+ mrb_define_method(mrb, response_class, "return", response_return,
+ MRB_ARGS_OPT(1));
+ mrb_define_method(mrb, response_class, "send_info", response_send_info,
+ MRB_ARGS_REQ(2));
+}
+
+} // namespace mruby
+
+} // namespace shrpx
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