sandboxed-api/oss-internship-2020/curl/examples/example4.cc
2020-09-18 14:18:32 +00:00

131 lines
4.3 KiB
C++

// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Sandboxed version of multi-poll.c
// HTTP GET request with polling
#include <cstdlib>
#include "../sandbox.h"
#include "curl_sapi.sapi.h"
#include "sandboxed_api/util/flag.h"
int main(int argc, char* argv[]) {
gflags::ParseCommandLineFlags(&argc, &argv, true);
google::InitGoogleLogging(argv[0]);
absl::Status status;
sapi::StatusOr<int> status_or_int;
sapi::StatusOr<CURL*> status_or_curl;
sapi::StatusOr<CURLM*> status_or_curlm;
// Initialize sandbox2 and sapi
CurlSapiSandbox sandbox;
status = sandbox.Init();
if (!status.ok()) {
LOG(FATAL) << "Couldn't initialize Sandboxed API: " << status;
}
CurlApi api(&sandbox);
// Number of running handles
sapi::v::Int still_running(1);
// Initialize curl (CURL_GLOBAL_DEFAULT = 3)
status_or_int = api.curl_global_init(3l);
if (!status_or_int.ok() or status_or_int.value() != CURLE_OK) {
LOG(FATAL) << "curl_global_init failed: " << status_or_int.status();
}
// Initialize http_handle
status_or_curl = api.curl_easy_init();
if (!status_or_curl.ok()) {
LOG(FATAL) << "curl_easy_init failed: " << status_or_curl.status();
}
sapi::v::RemotePtr http_handle(status_or_curl.value());
if (!http_handle.GetValue()) {
LOG(FATAL) << "curl_easy_init failed: http_handle is NULL";
}
// Specify URL to get
sapi::v::ConstCStr url("http://example.com");
status_or_int =
api.curl_easy_setopt_ptr(&http_handle, CURLOPT_URL, url.PtrBefore());
if (!status_or_int.ok() or status_or_int.value() != CURLE_OK) {
LOG(FATAL) << "curl_easy_setopt_ptr failed: " << status_or_int.status();
}
// Initialize multi_handle
status_or_curlm = api.curl_multi_init();
if (!status_or_curlm.ok()) {
LOG(FATAL) << "curl_multi_init failed: " << status_or_curlm.status();
}
sapi::v::RemotePtr multi_handle(status_or_curlm.value());
if (!multi_handle.GetValue()) {
LOG(FATAL) << "curl_multi_init failed: multi_handle is NULL";
}
// Add http_handle to the multi stack
status_or_int = api.curl_multi_add_handle(&multi_handle, &http_handle);
if (!status_or_int.ok() or status_or_int.value() != CURLE_OK) {
LOG(FATAL) << "curl_multi_add_handle failed: " << status_or_int.status();
}
while (still_running.GetValue()) {
sapi::v::Int numfds(0);
// Perform the request
status_or_int =
api.curl_multi_perform(&multi_handle, still_running.PtrBoth());
if (!status_or_int.ok() or status_or_int.value() != CURLE_OK) {
LOG(FATAL) << "curl_mutli_perform failed: " << status_or_int.status();
}
if (still_running.GetValue()) {
// Wait for an event or timeout
sapi::v::NullPtr null_ptr;
status_or_int = api.curl_multi_poll_sapi(&multi_handle, &null_ptr, 0,
1000, numfds.PtrBoth());
if (!status_or_int.ok() or status_or_int.value() != CURLE_OK) {
LOG(FATAL) << "curl_multi_poll_sapi failed: " << status_or_int.status();
}
}
}
// Remove http_handle from the multi stack
status_or_int = api.curl_multi_remove_handle(&multi_handle, &http_handle);
if (!status_or_int.ok() or status_or_int.value() != CURLE_OK) {
LOG(FATAL) << "curl_multi_remove_handle failed: " << status_or_int.status();
}
// Cleanup http_handle
status = api.curl_easy_cleanup(&http_handle);
if (!status.ok()) {
LOG(FATAL) << "curl_easy_cleanup failed: " << status;
}
// Cleanup multi_handle
status_or_int = api.curl_multi_cleanup(&multi_handle);
if (!status_or_int.ok() or status_or_int.value() != CURLE_OK) {
LOG(FATAL) << "curl_multi_cleanup failed: " << status_or_int.status();
}
// Cleanup curl
status = api.curl_global_cleanup();
if (!status.ok()) {
LOG(FATAL) << "curl_global_cleanup failed: " << status;
}
return EXIT_SUCCESS;
}