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117 lines
3.9 KiB
117 lines
3.9 KiB
/*
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* Copyright (C) 2021 The Android Open Source Project
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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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*/
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#pragma once
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#include <string>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <netinet/in.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <sys/un.h>
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#include "vm_sockets.h"
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namespace android {
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class RpcSocketAddress {
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public:
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virtual ~RpcSocketAddress() {}
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virtual std::string toString() const = 0;
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virtual const sockaddr* addr() const = 0;
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virtual size_t addrSize() const = 0;
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};
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class UnixSocketAddress : public RpcSocketAddress {
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public:
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explicit UnixSocketAddress(const char* path) : mAddr({.sun_family = AF_UNIX}) {
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unsigned int pathLen = strlen(path) + 1;
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LOG_ALWAYS_FATAL_IF(pathLen > sizeof(mAddr.sun_path), "Socket path is too long: %u %s",
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pathLen, path);
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memcpy(mAddr.sun_path, path, pathLen);
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}
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virtual ~UnixSocketAddress() {}
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std::string toString() const override {
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return String8::format("path '%.*s'", static_cast<int>(sizeof(mAddr.sun_path)),
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mAddr.sun_path)
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.c_str();
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}
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const sockaddr* addr() const override { return reinterpret_cast<const sockaddr*>(&mAddr); }
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size_t addrSize() const override { return sizeof(mAddr); }
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private:
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sockaddr_un mAddr;
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};
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class VsockSocketAddress : public RpcSocketAddress {
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public:
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VsockSocketAddress(unsigned int cid, unsigned int port)
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: mAddr({
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.svm_family = AF_VSOCK,
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.svm_port = port,
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.svm_cid = cid,
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}) {}
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virtual ~VsockSocketAddress() {}
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std::string toString() const override {
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return String8::format("cid %u port %u", mAddr.svm_cid, mAddr.svm_port).c_str();
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}
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const sockaddr* addr() const override { return reinterpret_cast<const sockaddr*>(&mAddr); }
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size_t addrSize() const override { return sizeof(mAddr); }
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private:
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sockaddr_vm mAddr;
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};
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class InetSocketAddress : public RpcSocketAddress {
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public:
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InetSocketAddress(const sockaddr* sockAddr, size_t size, const char* addr, unsigned int port)
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: mSockAddr(sockAddr), mSize(size), mAddr(addr), mPort(port) {}
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[[nodiscard]] std::string toString() const override {
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return String8::format("%s:%u", mAddr, mPort).c_str();
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}
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[[nodiscard]] const sockaddr* addr() const override { return mSockAddr; }
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[[nodiscard]] size_t addrSize() const override { return mSize; }
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using AddrInfo = std::unique_ptr<addrinfo, decltype(&freeaddrinfo)>;
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static AddrInfo getAddrInfo(const char* addr, unsigned int port) {
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addrinfo hint{
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.ai_flags = 0,
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.ai_family = AF_UNSPEC,
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.ai_socktype = SOCK_STREAM,
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.ai_protocol = 0,
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};
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addrinfo* aiStart = nullptr;
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if (int rc = getaddrinfo(addr, std::to_string(port).data(), &hint, &aiStart); 0 != rc) {
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ALOGE("Unable to resolve %s:%u: %s", addr, port, gai_strerror(rc));
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return AddrInfo(nullptr, nullptr);
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}
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if (aiStart == nullptr) {
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ALOGE("Unable to resolve %s:%u: getaddrinfo returns null", addr, port);
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return AddrInfo(nullptr, nullptr);
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}
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return AddrInfo(aiStart, &freeaddrinfo);
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}
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private:
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const sockaddr* mSockAddr;
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size_t mSize;
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const char* mAddr;
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unsigned int mPort;
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};
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} // namespace android
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