106 lines
3.9 KiB
C++
106 lines
3.9 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#include "http/http_channel.h"
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#include <event2/buffer.h>
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#include <event2/http.h>
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#include <mutex>
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#include <sstream>
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#include <string>
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#include "common/logging.h"
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#include "gutil/strings/split.h"
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#include "http/http_headers.h"
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#include "http/http_request.h"
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#include "http/http_response.h"
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#include "http/http_status.h"
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#include "util/zlib.h"
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namespace doris {
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// Send Unauthorized status with basic challenge
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void HttpChannel::send_basic_challenge(HttpRequest* req, const std::string& realm) {
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static std::string s_prompt_str = "Please provide your userid and password\n";
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std::stringstream ss;
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ss << "Basic realm=\"" << realm << "\"";
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req->add_output_header(HttpHeaders::WWW_AUTHENTICATE, ss.str().c_str());
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send_reply(req, HttpStatus::UNAUTHORIZED, s_prompt_str);
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}
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void HttpChannel::send_error(HttpRequest* request, HttpStatus status) {
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evhttp_send_error(request->get_evhttp_request(), status, default_reason(status).c_str());
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}
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void HttpChannel::send_reply(HttpRequest* request, HttpStatus status) {
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evhttp_send_reply(request->get_evhttp_request(), status, default_reason(status).c_str(),
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nullptr);
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}
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void HttpChannel::send_reply(HttpRequest* request, HttpStatus status, const std::string& content) {
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auto evb = evbuffer_new();
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std::string compressed_content;
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if (compress_content(request->header(HttpHeaders::ACCEPT_ENCODING), content,
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&compressed_content)) {
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request->add_output_header(HttpHeaders::CONTENT_ENCODING, "gzip");
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evbuffer_add(evb, compressed_content.c_str(), compressed_content.size());
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} else {
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evbuffer_add(evb, content.c_str(), content.size());
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}
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evhttp_send_reply(request->get_evhttp_request(), status, default_reason(status).c_str(), evb);
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evbuffer_free(evb);
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}
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void HttpChannel::send_file(HttpRequest* request, int fd, size_t off, size_t size) {
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auto evb = evbuffer_new();
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evbuffer_add_file(evb, fd, off, size);
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evhttp_send_reply(request->get_evhttp_request(), HttpStatus::OK,
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default_reason(HttpStatus::OK).c_str(), evb);
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evbuffer_free(evb);
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}
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bool HttpChannel::compress_content(const std::string& accept_encoding, const std::string& input,
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std::string* output) {
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// Don't bother compressing empty content.
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if (input.empty()) {
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return false;
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}
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// Check if gzip compression is accepted by the caller. If so, compress the
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// content and replace the prerendered output.
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bool is_compressed = false;
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std::vector<string> encodings = strings::Split(accept_encoding, ",");
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for (string& encoding : encodings) {
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StripWhiteSpace(&encoding);
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if (encoding == "gzip") {
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std::ostringstream oss;
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Status s = zlib::CompressLevel(Slice(input), 1, &oss);
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if (s.ok()) {
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*output = oss.str();
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is_compressed = true;
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} else {
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LOG(WARNING) << "Could not compress output: " << s.to_string();
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}
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break;
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}
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}
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return is_compressed;
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}
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} // namespace doris
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