mirror of
https://github.com/google/sandboxed-api.git
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102 lines
3.8 KiB
C++
102 lines
3.8 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 getinmemory.c
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// HTTP GET request using callbacks
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#include <cstdlib>
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#include <iostream>
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#include "../sandbox.h"
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struct MemoryStruct {
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char* memory;
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size_t size;
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};
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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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absl::Status status;
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sapi::StatusOr<CURL*> status_or_curl;
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sapi::StatusOr<int> status_or_int;
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// Initialize sandbox2 and sapi
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CurlSapiSandbox sandbox;
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status = sandbox.Init();
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if (!status.ok())
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LOG(FATAL) << "Couldn't initialize Sandboxed API: " << status;
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CurlApi api(&sandbox);
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// Generate pointer to WriteMemoryCallback function
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sapi::RPCChannel rpcc(sandbox.comms());
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size_t (*_function_ptr)(void*, size_t, size_t, void*);
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status = rpcc.Symbol("WriteMemoryCallback", (void**)&_function_ptr);
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if (!status.ok()) LOG(FATAL) << "rpcc.Symbol failed: " << status;
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sapi::v::RemotePtr remote_function_ptr((void*)_function_ptr);
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// Initialize the curl session
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status_or_curl = api.curl_easy_init();
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if (!status_or_curl.ok())
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LOG(FATAL) << "curl_easy_init failed: " << status_or_curl.status();
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sapi::v::RemotePtr curl(status_or_curl.value());
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if (!curl.GetValue()) LOG(FATAL) << "curl_easy_init failed: curl is NULL";
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// Specify URL to get
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sapi::v::ConstCStr url("http://example.com");
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status_or_int = api.curl_easy_setopt_ptr(&curl, CURLOPT_URL, url.PtrBefore());
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if (!status_or_int.ok() or status_or_int.value() != CURLE_OK)
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LOG(FATAL) << "curl_easy_setopt_ptr failed: " << status_or_int.status();
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// Set WriteMemoryCallback as the write function
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status_or_int = api.curl_easy_setopt_ptr(&curl, CURLOPT_WRITEFUNCTION,
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&remote_function_ptr);
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if (!status_or_int.ok() or status_or_int.value() != CURLE_OK)
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LOG(FATAL) << "curl_easy_setopt_ptr failed: " << status_or_int.status();
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// Pass 'chunk' struct to the callback function
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sapi::v::Struct<MemoryStruct> chunk;
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status_or_int =
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api.curl_easy_setopt_ptr(&curl, CURLOPT_WRITEDATA, chunk.PtrBoth());
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if (!status_or_int.ok() or status_or_int.value() != CURLE_OK)
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LOG(FATAL) << "curl_easy_setopt_ptr failed: " << status_or_int.status();
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// Set a user agent
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sapi::v::ConstCStr user_agent("libcurl-agent/1.0");
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status_or_int = api.curl_easy_setopt_ptr(&curl, CURLOPT_USERAGENT,
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user_agent.PtrBefore());
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if (!status_or_int.ok() or status_or_int.value() != CURLE_OK)
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LOG(FATAL) << "curl_easy_setopt_ptr failed: " << status_or_int.status();
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// Perform the request
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status_or_int = api.curl_easy_perform(&curl);
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if (!status_or_int.ok() or status_or_int.value() != CURLE_OK)
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LOG(FATAL) << "curl_easy_perform failed: " << status_or_int.status();
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// Retrieve memory size
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sapi::v::Int size;
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size.SetRemote(&((MemoryStruct*)chunk.GetRemote())->size);
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status = sandbox.TransferFromSandboxee(&size);
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if (!status.ok())
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LOG(FATAL) << "sandbox.TransferFromSandboxee failed: " << status;
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std::cout << "memory size: " << size.GetValue() << " bytes" << std::endl;
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// Cleanup curl
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status = api.curl_easy_cleanup(&curl);
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if (!status.ok()) LOG(FATAL) << "curl_easy_cleanup failed: " << status;
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return EXIT_SUCCESS;
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}
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