283 lines
8.5 KiB
C++
283 lines
8.5 KiB
C++
/*
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* nghttp2 - HTTP/2 C Library
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*
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* Copyright (c) 2015 Tatsuhiro Tsujikawa
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "shrpx_mruby_module_response.h"
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#include <mruby/variable.h>
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#include <mruby/string.h>
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#include <mruby/hash.h>
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#include <mruby/array.h>
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#include "shrpx_downstream.h"
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#include "shrpx_upstream.h"
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#include "shrpx_client_handler.h"
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#include "shrpx_mruby.h"
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#include "shrpx_mruby_module.h"
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#include "util.h"
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#include "http2.h"
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namespace shrpx {
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namespace mruby {
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namespace {
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mrb_value response_init(mrb_state *mrb, mrb_value self) { return self; }
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} // namespace
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namespace {
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mrb_value response_get_http_version_major(mrb_state *mrb, mrb_value self) {
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auto data = static_cast<MRubyAssocData *>(mrb->ud);
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auto downstream = data->downstream;
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const auto &resp = downstream->response();
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return mrb_fixnum_value(resp.http_major);
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}
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} // namespace
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namespace {
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mrb_value response_get_http_version_minor(mrb_state *mrb, mrb_value self) {
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auto data = static_cast<MRubyAssocData *>(mrb->ud);
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auto downstream = data->downstream;
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const auto &resp = downstream->response();
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return mrb_fixnum_value(resp.http_minor);
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}
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} // namespace
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namespace {
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mrb_value response_get_status(mrb_state *mrb, mrb_value self) {
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auto data = static_cast<MRubyAssocData *>(mrb->ud);
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auto downstream = data->downstream;
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const auto &resp = downstream->response();
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return mrb_fixnum_value(resp.http_status);
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}
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} // namespace
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namespace {
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mrb_value response_set_status(mrb_state *mrb, mrb_value self) {
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auto data = static_cast<MRubyAssocData *>(mrb->ud);
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auto downstream = data->downstream;
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auto &resp = downstream->response();
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mrb_int status;
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mrb_get_args(mrb, "i", &status);
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// We don't support 1xx status code for mruby scripting yet.
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if (status < 200 || status > 999) {
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mrb_raise(mrb, E_RUNTIME_ERROR,
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"invalid status; it should be [200, 999], inclusive");
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}
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resp.http_status = status;
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return self;
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}
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} // namespace
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namespace {
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mrb_value response_get_headers(mrb_state *mrb, mrb_value self) {
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auto data = static_cast<MRubyAssocData *>(mrb->ud);
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auto downstream = data->downstream;
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const auto &resp = downstream->response();
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return create_headers_hash(mrb, resp.fs.headers());
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}
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} // namespace
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namespace {
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mrb_value response_mod_header(mrb_state *mrb, mrb_value self, bool repl) {
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auto data = static_cast<MRubyAssocData *>(mrb->ud);
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auto downstream = data->downstream;
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auto &resp = downstream->response();
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auto &balloc = downstream->get_block_allocator();
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mrb_value key, values;
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mrb_get_args(mrb, "oo", &key, &values);
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if (RSTRING_LEN(key) == 0) {
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mrb_raise(mrb, E_RUNTIME_ERROR, "empty key is not allowed");
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}
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key = mrb_funcall(mrb, key, "downcase", 0);
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auto keyref =
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make_string_ref(balloc, StringRef{RSTRING_PTR(key),
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static_cast<size_t>(RSTRING_LEN(key))});
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auto token = http2::lookup_token(keyref.byte(), keyref.size());
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if (repl) {
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size_t p = 0;
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auto &headers = resp.fs.headers();
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for (size_t i = 0; i < headers.size(); ++i) {
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auto &kv = headers[i];
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if (kv.name == keyref) {
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continue;
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}
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if (i != p) {
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headers[p++] = std::move(kv);
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}
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}
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headers.resize(p);
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}
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if (mrb_obj_is_instance_of(mrb, values, mrb->array_class)) {
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auto n = mrb_ary_len(mrb, values);
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for (int i = 0; i < n; ++i) {
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auto value = mrb_ary_entry(values, i);
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resp.fs.add_header_token(
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keyref,
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make_string_ref(balloc,
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StringRef{RSTRING_PTR(value),
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static_cast<size_t>(RSTRING_LEN(value))}),
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false, token);
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}
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} else if (!mrb_nil_p(values)) {
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resp.fs.add_header_token(
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keyref,
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make_string_ref(balloc,
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StringRef{RSTRING_PTR(values),
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static_cast<size_t>(RSTRING_LEN(values))}),
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false, token);
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}
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return mrb_nil_value();
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}
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} // namespace
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namespace {
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mrb_value response_set_header(mrb_state *mrb, mrb_value self) {
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return response_mod_header(mrb, self, true);
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}
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} // namespace
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namespace {
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mrb_value response_add_header(mrb_state *mrb, mrb_value self) {
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return response_mod_header(mrb, self, false);
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}
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} // namespace
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namespace {
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mrb_value response_clear_headers(mrb_state *mrb, mrb_value self) {
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auto data = static_cast<MRubyAssocData *>(mrb->ud);
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auto downstream = data->downstream;
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auto &resp = downstream->response();
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resp.fs.clear_headers();
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return mrb_nil_value();
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}
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} // namespace
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namespace {
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mrb_value response_return(mrb_state *mrb, mrb_value self) {
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auto data = static_cast<MRubyAssocData *>(mrb->ud);
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auto downstream = data->downstream;
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auto &resp = downstream->response();
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int rv;
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auto &balloc = downstream->get_block_allocator();
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if (downstream->get_response_state() == Downstream::MSG_COMPLETE) {
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mrb_raise(mrb, E_RUNTIME_ERROR, "response has already been committed");
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}
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const char *val;
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mrb_int vallen;
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mrb_get_args(mrb, "|s", &val, &vallen);
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const uint8_t *body = nullptr;
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size_t bodylen = 0;
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if (resp.http_status == 0) {
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resp.http_status = 200;
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}
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if (downstream->expect_response_body() && vallen > 0) {
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body = reinterpret_cast<const uint8_t *>(val);
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bodylen = vallen;
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}
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auto content_length = util::make_string_ref_uint(balloc, bodylen);
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auto cl = resp.fs.header(http2::HD_CONTENT_LENGTH);
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if (cl) {
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cl->value = content_length;
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} else {
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resp.fs.add_header_token(StringRef::from_lit("content-length"),
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content_length, false, http2::HD_CONTENT_LENGTH);
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}
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resp.fs.content_length = bodylen;
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auto date = resp.fs.header(http2::HD_DATE);
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if (!date) {
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auto lgconf = log_config();
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lgconf->update_tstamp(std::chrono::system_clock::now());
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resp.fs.add_header_token(
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StringRef::from_lit("date"),
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make_string_ref(balloc, StringRef{lgconf->time_http_str}), false,
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http2::HD_DATE);
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}
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auto upstream = downstream->get_upstream();
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rv = upstream->send_reply(downstream, body, bodylen);
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if (rv != 0) {
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mrb_raise(mrb, E_RUNTIME_ERROR, "could not send response");
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}
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auto handler = upstream->get_client_handler();
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handler->signal_write();
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return self;
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}
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} // namespace
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void init_response_class(mrb_state *mrb, RClass *module) {
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auto response_class =
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mrb_define_class_under(mrb, module, "Response", mrb->object_class);
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mrb_define_method(mrb, response_class, "initialize", response_init,
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MRB_ARGS_NONE());
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mrb_define_method(mrb, response_class, "http_version_major",
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response_get_http_version_major, MRB_ARGS_NONE());
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mrb_define_method(mrb, response_class, "http_version_minor",
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response_get_http_version_minor, MRB_ARGS_NONE());
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mrb_define_method(mrb, response_class, "status", response_get_status,
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MRB_ARGS_NONE());
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mrb_define_method(mrb, response_class, "status=", response_set_status,
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MRB_ARGS_REQ(1));
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mrb_define_method(mrb, response_class, "headers", response_get_headers,
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MRB_ARGS_NONE());
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mrb_define_method(mrb, response_class, "add_header", response_add_header,
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MRB_ARGS_REQ(2));
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mrb_define_method(mrb, response_class, "set_header", response_set_header,
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MRB_ARGS_REQ(2));
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mrb_define_method(mrb, response_class, "clear_headers",
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response_clear_headers, MRB_ARGS_NONE());
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mrb_define_method(mrb, response_class, "return", response_return,
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MRB_ARGS_OPT(1));
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}
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} // namespace mruby
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} // namespace shrpx
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