mirror of
https://github.com/google/sandboxed-api.git
synced 2024-03-22 13:11:30 +08:00
112 lines
3.5 KiB
C++
112 lines
3.5 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 getinmemory.c
|
|
// HTTP GET request using callbacks
|
|
|
|
#include <cstdlib>
|
|
#include <iostream>
|
|
|
|
#include "curl_sapi.sapi.h"
|
|
#include "sandboxed_api/util/flag.h"
|
|
|
|
struct MemoryStruct {
|
|
char* memory;
|
|
size_t size;
|
|
};
|
|
|
|
class CurlApiSandboxEx2 : public CurlSandbox {
|
|
private:
|
|
std::unique_ptr<sandbox2::Policy> ModifyPolicy(
|
|
sandbox2::PolicyBuilder*) override {
|
|
// Return a new policy
|
|
return sandbox2::PolicyBuilder()
|
|
.DangerDefaultAllowAll()
|
|
.AllowUnrestrictedNetworking()
|
|
.AddDirectory("/lib")
|
|
.BuildOrDie();
|
|
}
|
|
};
|
|
|
|
int main() {
|
|
|
|
absl::Status status;
|
|
sapi::StatusOr<CURL*> status_or_curl;
|
|
sapi::StatusOr<int> status_or_int;
|
|
|
|
// Initialize sandbox2 and sapi
|
|
CurlApiSandboxEx2 sandbox;
|
|
status = sandbox.Init();
|
|
assert(status.ok());
|
|
CurlApi api(&sandbox);
|
|
|
|
// Generate pointer to WriteMemoryCallback function
|
|
sapi::RPCChannel rpcc(sandbox.comms());
|
|
size_t (*_function_ptr)(void*, size_t, size_t, void*);
|
|
status = rpcc.Symbol("WriteMemoryCallback", (void**)&_function_ptr);
|
|
assert(status.ok());
|
|
sapi::v::RemotePtr remote_function_ptr((void*)_function_ptr);
|
|
|
|
// Initialize the curl session
|
|
status_or_curl = api.curl_easy_init();
|
|
assert(status_or_curl.ok());
|
|
sapi::v::RemotePtr curl(status_or_curl.value());
|
|
assert(curl.GetValue()); // Checking curl != nullptr
|
|
|
|
// Specify URL to get
|
|
sapi::v::ConstCStr url("http://example.com");
|
|
status_or_int = api.curl_easy_setopt_ptr(&curl, CURLOPT_URL, url.PtrBefore());
|
|
assert(status_or_int.ok());
|
|
assert(status_or_int.value() == CURLE_OK);
|
|
|
|
// Set WriteMemoryCallback as the write function
|
|
status_or_int = api.curl_easy_setopt_ptr(&curl, CURLOPT_WRITEFUNCTION,
|
|
&remote_function_ptr);
|
|
assert(status_or_int.ok());
|
|
assert(status_or_int.value() == CURLE_OK);
|
|
|
|
// Pass 'chunk' struct to the callback function
|
|
sapi::v::Struct<MemoryStruct> chunk;
|
|
status_or_int = api.curl_easy_setopt_ptr(&curl, CURLOPT_WRITEDATA,
|
|
chunk.PtrBoth());
|
|
assert(status_or_int.ok());
|
|
assert(status_or_int.value() == CURLE_OK);
|
|
|
|
// Set a user agent
|
|
sapi::v::ConstCStr user_agent("libcurl-agent/1.0");
|
|
status_or_int = api.curl_easy_setopt_ptr(&curl, CURLOPT_USERAGENT,
|
|
user_agent.PtrBefore());
|
|
assert(status_or_int.ok());
|
|
assert(status_or_int.value() == CURLE_OK);
|
|
|
|
// Perform the request
|
|
status_or_int = api.curl_easy_perform(&curl);
|
|
assert(status_or_int.ok());
|
|
assert(status_or_int.value() == CURLE_OK);
|
|
|
|
// Retrieve memory size
|
|
sapi::v::Int size;
|
|
size.SetRemote(&((MemoryStruct*)chunk.GetRemote())->size);
|
|
status = sandbox.TransferFromSandboxee(&size);
|
|
assert(status.ok());
|
|
std::cout << "memory size: " << size.GetValue() << " bytes" << std::endl;
|
|
|
|
// Cleanup curl
|
|
status = api.curl_easy_cleanup(&curl);
|
|
assert(status.ok());
|
|
|
|
return EXIT_SUCCESS;
|
|
|
|
}
|