Joshua Duong | 290ccb5 | 2019-11-20 14:18:43 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2019 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "client/pairing/pairing_client.h" |
| 18 | |
| 19 | #include <atomic> |
| 20 | #include <iomanip> |
| 21 | #include <mutex> |
| 22 | #include <sstream> |
| 23 | #include <thread> |
| 24 | #include <vector> |
| 25 | |
| 26 | #include <android-base/logging.h> |
| 27 | #include <android-base/parsenetaddress.h> |
| 28 | #include <android-base/stringprintf.h> |
| 29 | #include <android-base/thread_annotations.h> |
| 30 | #include <android-base/unique_fd.h> |
| 31 | #include <cutils/sockets.h> |
| 32 | #include "sysdeps.h" |
| 33 | |
| 34 | namespace adbwifi { |
| 35 | namespace pairing { |
| 36 | |
| 37 | using android::base::unique_fd; |
| 38 | |
| 39 | namespace { |
| 40 | |
| 41 | struct ConnectionDeleter { |
| 42 | void operator()(PairingConnectionCtx* p) { pairing_connection_destroy(p); } |
| 43 | }; // ConnectionDeleter |
| 44 | using ConnectionPtr = std::unique_ptr<PairingConnectionCtx, ConnectionDeleter>; |
| 45 | |
| 46 | class PairingClientImpl : public PairingClient { |
| 47 | public: |
| 48 | virtual ~PairingClientImpl(); |
| 49 | |
| 50 | explicit PairingClientImpl(const Data& pswd, const PeerInfo& peer_info, const Data& cert, |
| 51 | const Data& priv_key); |
| 52 | |
| 53 | // Starts the pairing client. This call is non-blocking. Upon pairing |
| 54 | // completion, |cb| will be called with the PeerInfo on success, |
| 55 | // or an empty value on failure. |
| 56 | // |
| 57 | // Returns true if PairingClient was successfully started. Otherwise, |
| 58 | // return false. |
| 59 | virtual bool Start(std::string_view ip_addr, pairing_client_result_cb cb, |
| 60 | void* opaque) override; |
| 61 | |
| 62 | static void OnPairingResult(const PeerInfo* peer_info, int fd, void* opaque); |
| 63 | |
| 64 | private: |
| 65 | // Setup and start the PairingConnection |
| 66 | bool StartConnection(); |
| 67 | |
| 68 | enum class State { |
| 69 | Ready, |
| 70 | Running, |
| 71 | Stopped, |
| 72 | }; |
| 73 | |
| 74 | State state_ = State::Ready; |
| 75 | Data pswd_; |
| 76 | PeerInfo peer_info_; |
| 77 | Data cert_; |
| 78 | Data priv_key_; |
| 79 | std::string host_; |
| 80 | int port_; |
| 81 | |
| 82 | ConnectionPtr connection_; |
| 83 | pairing_client_result_cb cb_; |
| 84 | void* opaque_ = nullptr; |
| 85 | }; // PairingClientImpl |
| 86 | |
| 87 | PairingClientImpl::PairingClientImpl(const Data& pswd, const PeerInfo& peer_info, const Data& cert, |
| 88 | const Data& priv_key) |
| 89 | : pswd_(pswd), peer_info_(peer_info), cert_(cert), priv_key_(priv_key) { |
| 90 | CHECK(!pswd_.empty() && !cert_.empty() && !priv_key_.empty()); |
| 91 | |
| 92 | state_ = State::Ready; |
| 93 | } |
| 94 | |
| 95 | PairingClientImpl::~PairingClientImpl() { |
| 96 | // Make sure to kill the PairingConnection before terminating the fdevent |
| 97 | // looper. |
| 98 | if (connection_ != nullptr) { |
| 99 | connection_.reset(); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | bool PairingClientImpl::Start(std::string_view ip_addr, pairing_client_result_cb cb, void* opaque) { |
| 104 | CHECK(!ip_addr.empty()); |
| 105 | cb_ = cb; |
| 106 | opaque_ = opaque; |
| 107 | |
| 108 | if (state_ != State::Ready) { |
| 109 | LOG(ERROR) << "PairingClient already running or finished"; |
| 110 | return false; |
| 111 | } |
| 112 | |
| 113 | // Try to parse the host address |
| 114 | std::string err; |
| 115 | CHECK(android::base::ParseNetAddress(std::string(ip_addr), &host_, &port_, nullptr, &err)); |
| 116 | CHECK(port_ > 0 && port_ <= 65535); |
| 117 | |
| 118 | if (!StartConnection()) { |
| 119 | LOG(ERROR) << "Unable to start PairingClient connection"; |
| 120 | state_ = State::Stopped; |
| 121 | return false; |
| 122 | } |
| 123 | |
| 124 | state_ = State::Running; |
| 125 | return true; |
| 126 | } |
| 127 | |
| 128 | bool PairingClientImpl::StartConnection() { |
| 129 | std::string err; |
| 130 | const int timeout = 10; // seconds |
| 131 | unique_fd fd(network_connect(host_, port_, SOCK_STREAM, timeout, &err)); |
| 132 | if (fd.get() == -1) { |
| 133 | LOG(ERROR) << "Failed to start pairing connection client [" << err << "]"; |
| 134 | return false; |
| 135 | } |
| 136 | int off = 1; |
| 137 | adb_setsockopt(fd.get(), IPPROTO_TCP, TCP_NODELAY, &off, sizeof(off)); |
| 138 | |
| 139 | connection_ = ConnectionPtr( |
| 140 | pairing_connection_client_new(pswd_.data(), pswd_.size(), &peer_info_, cert_.data(), |
| 141 | cert_.size(), priv_key_.data(), priv_key_.size())); |
| 142 | CHECK(connection_); |
| 143 | |
Joshua Duong | dd19e86 | 2020-03-24 09:50:59 -0700 | [diff] [blame] | 144 | int osh = cast_handle_to_int(adb_get_os_handle(fd.release())); |
Joshua Duong | dd19e86 | 2020-03-24 09:50:59 -0700 | [diff] [blame] | 145 | if (!pairing_connection_start(connection_.get(), osh, OnPairingResult, this)) { |
Joshua Duong | 290ccb5 | 2019-11-20 14:18:43 -0800 | [diff] [blame] | 146 | LOG(ERROR) << "PairingClient failed to start the PairingConnection"; |
| 147 | state_ = State::Stopped; |
| 148 | return false; |
| 149 | } |
| 150 | |
| 151 | return true; |
| 152 | } |
| 153 | |
| 154 | // static |
| 155 | void PairingClientImpl::OnPairingResult(const PeerInfo* peer_info, int /* fd */, void* opaque) { |
| 156 | auto* p = reinterpret_cast<PairingClientImpl*>(opaque); |
| 157 | p->cb_(peer_info, p->opaque_); |
| 158 | } |
| 159 | |
| 160 | } // namespace |
| 161 | |
| 162 | // static |
| 163 | std::unique_ptr<PairingClient> PairingClient::Create(const Data& pswd, const PeerInfo& peer_info, |
| 164 | const Data& cert, const Data& priv_key) { |
| 165 | CHECK(!pswd.empty()); |
| 166 | CHECK(!cert.empty()); |
| 167 | CHECK(!priv_key.empty()); |
| 168 | |
| 169 | return std::unique_ptr<PairingClient>(new PairingClientImpl(pswd, peer_info, cert, priv_key)); |
| 170 | } |
| 171 | |
| 172 | } // namespace pairing |
| 173 | } // namespace adbwifi |