mirror of
https://github.com/google/sandboxed-api.git
synced 2024-03-22 13:11:30 +08:00
113 lines
3.3 KiB
C++
113 lines
3.3 KiB
C++
// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Sandboxed version of multithread.c
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// Multithreaded HTTP GET requests
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#include <cstdlib>
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#include <future> // NOLINT(build/c++11)
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#include <thread> // NOLINT(build/c++11)
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#include "../curl_util.h" // NOLINT(build/include)
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#include "../sandbox.h" // NOLINT(build/include)
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#include "curl_sapi.sapi.h" // NOLINT(build/include)
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#include "absl/strings/str_cat.h"
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#include "sandboxed_api/util/status_macros.h"
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namespace {
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absl::Status pull_one_url(const std::string& url, curl::CurlApi& api) {
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// Initialize the curl session
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curl::CURL* curl_handle;
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SAPI_ASSIGN_OR_RETURN(curl_handle, api.curl_easy_init());
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sapi::v::RemotePtr curl(curl_handle);
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if (!curl_handle) {
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return absl::UnavailableError("curl_easy_init failed: Invalid curl handle");
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}
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int curl_code;
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// Specify URL to get
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sapi::v::ConstCStr sapi_url(url.c_str());
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SAPI_ASSIGN_OR_RETURN(
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curl_code,
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api.curl_easy_setopt_ptr(&curl, curl::CURLOPT_URL, sapi_url.PtrBefore()));
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if (curl_code != 0) {
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return absl::UnavailableError(absl::StrCat(
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"curl_easy_setopt_ptr failed: ", curl::StrError(&api, curl_code)));
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}
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// Perform the request
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SAPI_ASSIGN_OR_RETURN(curl_code, api.curl_easy_perform(&curl));
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if (curl_code != 0) {
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return absl::UnavailableError(absl::StrCat(
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"curl_easy_perform failed: ", curl::StrError(&api, curl_code)));
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}
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// Cleanup curl easy handle
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SAPI_RETURN_IF_ERROR(api.curl_easy_cleanup(&curl));
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return absl::OkStatus();
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}
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absl::Status Example5() {
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// Initialize sandbox2 and sapi
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curl::CurlSapiSandbox sandbox;
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SAPI_RETURN_IF_ERROR(sandbox.Init());
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curl::CurlApi api(&sandbox);
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int curl_code;
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// Initialize curl (CURL_GLOBAL_DEFAULT = 3)
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SAPI_ASSIGN_OR_RETURN(curl_code, api.curl_global_init(3l));
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if (curl_code != 0) {
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return absl::UnavailableError(absl::StrCat(
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"curl_global_init failed: ", curl::StrError(&api, curl_code)));
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}
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// Create the threads (by using futures)
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const std::vector<std::string> urls = {
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"http://example.com", "http://example.edu", "http://example.net",
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"http://example.org"};
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std::vector<std::future<absl::Status>> futures;
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for (auto& url : urls) {
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futures.emplace_back(
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std::async(pull_one_url, std::ref(url), std::ref(api)));
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}
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// Join the threads and check for errors
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for (auto& future : futures) {
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SAPI_RETURN_IF_ERROR(future.get());
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}
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// Cleanup curl
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SAPI_RETURN_IF_ERROR(api.curl_global_cleanup());
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return absl::OkStatus();
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}
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} // namespace
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int main(int argc, char* argv[]) {
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gflags::ParseCommandLineFlags(&argc, &argv, true);
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google::InitGoogleLogging(argv[0]);
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if (absl::Status status = Example5(); !status.ok()) {
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LOG(ERROR) << "Example5 failed: " << status.ToString();
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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