The Tor Browser / file comparison
comparison: netwerk/protocol/ftp/nsFtpControlConnection.cpp
netwerk/protocol/ftp/nsFtpControlConnection.cpp
- branch
- TOR_BUG_9701
- changeset 11
- deefc01c0e14
equal
deleted
inserted
replaced
| -1:000000000000 | 0:ca4ce8d0719d |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "nsIOService.h" | |
| 7 #include "nsFtpControlConnection.h" | |
| 8 #include "nsFtpProtocolHandler.h" | |
| 9 #include "prlog.h" | |
| 10 #include "nsIInputStream.h" | |
| 11 #include "nsISocketTransportService.h" | |
| 12 #include "nsISocketTransport.h" | |
| 13 #include "nsThreadUtils.h" | |
| 14 #include "nsIOutputStream.h" | |
| 15 #include "nsNetCID.h" | |
| 16 #include <algorithm> | |
| 17 | |
| 18 #if defined(PR_LOGGING) | |
| 19 extern PRLogModuleInfo* gFTPLog; | |
| 20 #endif | |
| 21 #define LOG(args) PR_LOG(gFTPLog, PR_LOG_DEBUG, args) | |
| 22 #define LOG_ALWAYS(args) PR_LOG(gFTPLog, PR_LOG_ALWAYS, args) | |
| 23 | |
| 24 // | |
| 25 // nsFtpControlConnection implementation ... | |
| 26 // | |
| 27 | |
| 28 NS_IMPL_ISUPPORTS(nsFtpControlConnection, nsIInputStreamCallback) | |
| 29 | |
| 30 NS_IMETHODIMP | |
| 31 nsFtpControlConnection::OnInputStreamReady(nsIAsyncInputStream *stream) | |
| 32 { | |
| 33 char data[4096]; | |
| 34 | |
| 35 // Consume data whether we have a listener or not. | |
| 36 uint64_t avail64; | |
| 37 uint32_t avail = 0; | |
| 38 nsresult rv = stream->Available(&avail64); | |
| 39 if (NS_SUCCEEDED(rv)) { | |
| 40 avail = (uint32_t)std::min(avail64, (uint64_t)sizeof(data)); | |
| 41 | |
| 42 uint32_t n; | |
| 43 rv = stream->Read(data, avail, &n); | |
| 44 if (NS_SUCCEEDED(rv)) | |
| 45 avail = n; | |
| 46 } | |
| 47 | |
| 48 // It's important that we null out mListener before calling one of its | |
| 49 // methods as it may call WaitData, which would queue up another read. | |
| 50 | |
| 51 nsRefPtr<nsFtpControlConnectionListener> listener; | |
| 52 listener.swap(mListener); | |
| 53 | |
| 54 if (!listener) | |
| 55 return NS_OK; | |
| 56 | |
| 57 if (NS_FAILED(rv)) { | |
| 58 listener->OnControlError(rv); | |
| 59 } else { | |
| 60 listener->OnControlDataAvailable(data, avail); | |
| 61 } | |
| 62 | |
| 63 return NS_OK; | |
| 64 } | |
| 65 | |
| 66 nsFtpControlConnection::nsFtpControlConnection(const nsCSubstring& host, | |
| 67 uint32_t port) | |
| 68 : mServerType(0), mSessionId(gFtpHandler->GetSessionId()) | |
| 69 , mUseUTF8(false), mHost(host), mPort(port) | |
| 70 { | |
| 71 LOG_ALWAYS(("FTP:CC created @%p", this)); | |
| 72 } | |
| 73 | |
| 74 nsFtpControlConnection::~nsFtpControlConnection() | |
| 75 { | |
| 76 LOG_ALWAYS(("FTP:CC destroyed @%p", this)); | |
| 77 } | |
| 78 | |
| 79 bool | |
| 80 nsFtpControlConnection::IsAlive() | |
| 81 { | |
| 82 if (!mSocket) | |
| 83 return false; | |
| 84 | |
| 85 bool isAlive = false; | |
| 86 mSocket->IsAlive(&isAlive); | |
| 87 return isAlive; | |
| 88 } | |
| 89 nsresult | |
| 90 nsFtpControlConnection::Connect(nsIProxyInfo* proxyInfo, | |
| 91 nsITransportEventSink* eventSink) | |
| 92 { | |
| 93 if (mSocket) | |
| 94 return NS_OK; | |
| 95 | |
| 96 // build our own | |
| 97 nsresult rv; | |
| 98 nsCOMPtr<nsISocketTransportService> sts = | |
| 99 do_GetService(NS_SOCKETTRANSPORTSERVICE_CONTRACTID, &rv); | |
| 100 if (NS_FAILED(rv)) | |
| 101 return rv; | |
| 102 | |
| 103 rv = sts->CreateTransport(nullptr, 0, mHost, mPort, proxyInfo, | |
| 104 getter_AddRefs(mSocket)); // the command transport | |
| 105 if (NS_FAILED(rv)) | |
| 106 return rv; | |
| 107 | |
| 108 mSocket->SetQoSBits(gFtpHandler->GetControlQoSBits()); | |
| 109 | |
| 110 // proxy transport events back to current thread | |
| 111 if (eventSink) | |
| 112 mSocket->SetEventSink(eventSink, NS_GetCurrentThread()); | |
| 113 | |
| 114 // open buffered, blocking output stream to socket. so long as commands | |
| 115 // do not exceed 1024 bytes in length, the writing thread (the main thread) | |
| 116 // will not block. this should be OK. | |
| 117 rv = mSocket->OpenOutputStream(nsITransport::OPEN_BLOCKING, 1024, 1, | |
| 118 getter_AddRefs(mSocketOutput)); | |
| 119 if (NS_FAILED(rv)) | |
| 120 return rv; | |
| 121 | |
| 122 // open buffered, non-blocking/asynchronous input stream to socket. | |
| 123 nsCOMPtr<nsIInputStream> inStream; | |
| 124 rv = mSocket->OpenInputStream(0, | |
| 125 nsIOService::gDefaultSegmentSize, | |
| 126 nsIOService::gDefaultSegmentCount, | |
| 127 getter_AddRefs(inStream)); | |
| 128 if (NS_SUCCEEDED(rv)) | |
| 129 mSocketInput = do_QueryInterface(inStream); | |
| 130 | |
| 131 return rv; | |
| 132 } | |
| 133 | |
| 134 nsresult | |
| 135 nsFtpControlConnection::WaitData(nsFtpControlConnectionListener *listener) | |
| 136 { | |
| 137 LOG(("FTP:(%p) wait data [listener=%p]\n", this, listener)); | |
| 138 | |
| 139 // If listener is null, then simply disconnect the listener. Otherwise, | |
| 140 // ensure that we are listening. | |
| 141 if (!listener) { | |
| 142 mListener = nullptr; | |
| 143 return NS_OK; | |
| 144 } | |
| 145 | |
| 146 NS_ENSURE_STATE(mSocketInput); | |
| 147 | |
| 148 mListener = listener; | |
| 149 return mSocketInput->AsyncWait(this, 0, 0, NS_GetCurrentThread()); | |
| 150 } | |
| 151 | |
| 152 nsresult | |
| 153 nsFtpControlConnection::Disconnect(nsresult status) | |
| 154 { | |
| 155 if (!mSocket) | |
| 156 return NS_OK; // already disconnected | |
| 157 | |
| 158 LOG_ALWAYS(("FTP:(%p) CC disconnecting (%x)", this, status)); | |
| 159 | |
| 160 if (NS_FAILED(status)) { | |
| 161 // break cyclic reference! | |
| 162 mSocket->Close(status); | |
| 163 mSocket = 0; | |
| 164 mSocketInput->AsyncWait(nullptr, 0, 0, nullptr); // clear any observer | |
| 165 mSocketInput = nullptr; | |
| 166 mSocketOutput = nullptr; | |
| 167 } | |
| 168 | |
| 169 return NS_OK; | |
| 170 } | |
| 171 | |
| 172 nsresult | |
| 173 nsFtpControlConnection::Write(const nsCSubstring& command) | |
| 174 { | |
| 175 NS_ENSURE_STATE(mSocketOutput); | |
| 176 | |
| 177 uint32_t len = command.Length(); | |
| 178 uint32_t cnt; | |
| 179 nsresult rv = mSocketOutput->Write(command.Data(), len, &cnt); | |
| 180 | |
| 181 if (NS_FAILED(rv)) | |
| 182 return rv; | |
| 183 | |
| 184 if (len != cnt) | |
| 185 return NS_ERROR_FAILURE; | |
| 186 | |
| 187 return NS_OK; | |
| 188 } |
