Add net to the repository.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@14 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 78 insertions, 0 deletions

diff --git a/net/base/telnet_server.h b/net/base/telnet_server.h
new file mode 100644
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+++ b/net/base/telnet_server.h
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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef NET_BASE_TELNET_SERVER_H_
+#define NET_BASE_TELNET_SERVER_H_
+
+#include "net/base/listen_socket.h"
+
+// Implements the telnet protocol on top of the raw socket interface.
+// DidRead calls to the delegate are buffered on a line by line basis.
+// (for now this means that basic line editing is handled in this object)
+class TelnetServer : public ListenSocket {
+public:
+  static TelnetServer* Listen(std::string ip, int port,
+                              ListenSocketDelegate *del,
+                              MessageLoop* loop);
+  virtual ~TelnetServer();
+
+protected:
+  void Listen() { ListenSocket::Listen(); }
+  virtual void Read();
+  virtual void Accept();
+  virtual void SendInternal(const char* bytes, int len);
+
+private:
+  enum TelnetInputState {
+    NOT_IN_IAC_OR_ESC_SEQUENCE,  // Currently not processing any IAC or ESC sequence.
+    EXPECTING_NEW_LINE,  // Received carriage return (CR) expecting new line (LF).
+    EXPECTING_COMMAND,  // Processing IAC expecting command.
+    EXPECTING_OPTION,  // Processing IAC expecting option.
+    SUBNEGOTIATION_EXPECTING_IAC,  // Inside subnegoation IAC,SE will end it.
+    SUBNEGOTIATION_EXPECTING_SE,  // Ending subnegoation expecting SE.
+    EXPECTING_FIRST_ESC_CHARACTER,  // Processing ESC sequence.
+    EXPECTING_SECOND_ESC_CHARACTER,  // Processing ESC sequence with two characters
+    EXPECTING_NUMBER_SEMICOLON_OR_END  // Processing "ESC [" sequence.
+  };
+
+  TelnetServer(SOCKET s, ListenSocketDelegate* del, MessageLoop* loop);
+
+  // telnet commands
+  void SendIAC(int command, int option);
+  void StateMachineStep(unsigned char c);
+
+  TelnetInputState input_state_;
+  int iac_command_;  // Last command read.
+  int iac_option_;  // Last option read.
+  std::string command_line_;
+
+  DISALLOW_EVIL_CONSTRUCTORS(TelnetServer);
+};
+
+#endif // BASE_TELNET_SERVER_H_
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