src/modules/m_xmlsocket.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
   6  * See: http://www.inspircd.org/wiki/index.php/Credits
   7  *
   8  * This program is free but copyrighted software; see
   9  *            the file COPYING for details.
  10  *
  11  * ---------------------------------------------------
  12  */
  13
  14 #include "inspircd.h"
  15
  16 /* $ModDesc: Provides XMLSocket support for clients */
  17
  18 class ModuleXMLSocket : public Module
  19 {
  20         ConfigReader* Conf;
  21         std::vector<int> listenports;
  22
  23  public:
  24
  25         ModuleXMLSocket(InspIRCd* Me)
  26                 : Module(Me)
  27         {
  28                 OnRehash(NULL,"");
  29         }
  30
  31         virtual void OnRehash(userrec* user, const std::string &param)
  32         {
  33
  34                 Conf = new ConfigReader(ServerInstance);
  35
  36                 for (unsigned int i = 0; i < listenports.size(); i++)
  37                 {
  38                         ServerInstance->Config->DelIOHook(listenports[i]);
  39                 }
  40
  41                 listenports.clear();
  42
  43                 for (int i = 0; i < Conf->Enumerate("bind"); i++)
  44                 {
  45                         // For each <bind> tag
  46                         std::string x = Conf->ReadValue("bind", "type", i);
  47                         if (((x.empty()) || (x == "clients")) && (Conf->ReadFlag("bind", "xmlsocket", i)))
  48                         {
  49                                 // Get the port we're meant to be listening on with SSL
  50                                 std::string port = Conf->ReadValue("bind", "port", i);
  51                                 irc::portparser portrange(port, false);
  52                                 long portno = -1;
  53                                 while ((portno = portrange.GetToken()))
  54                                 {
  55                                         try
  56                                         {
  57                                                 if (ServerInstance->Config->AddIOHook(portno, this))
  58                                                 {
  59                                                         listenports.push_back(portno);
  60                                                                 for (size_t i = 0; i < ServerInstance->Config->ports.size(); i++)
  61                                                                 if (ServerInstance->Config->ports[i]->GetPort() == portno)
  62                                                                         ServerInstance->Config->ports[i]->SetDescription("xml");
  63                                                 }
  64                                                 else
  65                                                 {
  66                                                         ServerInstance->Log(DEFAULT, "m_xmlsocket.so: FAILED to enable XMLSocket on port %d, maybe you have another similar module loaded?", portno);
  67                                                 }
  68                                         }
  69                                         catch (ModuleException &e)
  70                                         {
  71                                                 ServerInstance->Log(DEFAULT, "m_xmlsocket.so: FAILED to enable XMLSocket on port %d: %s. Maybe it's already hooked by the same port on a different IP, or you have another similar module loaded?", portno, e.GetReason());
  72                                         }
  73                                 }
  74                         }
  75                 }
  76
  77                 DELETE(Conf);
  78         }
  79
  80         virtual ~ModuleXMLSocket()
  81         {
  82         }
  83
  84         virtual void OnUnloadModule(Module* mod, const std::string &name)
  85         {
  86                 if (mod == this)
  87                 {
  88                         for(unsigned int i = 0; i < listenports.size(); i++)
  89                         {
  90                                 ServerInstance->Config->DelIOHook(listenports[i]);
  91                                 for (size_t j = 0; j < ServerInstance->Config->ports.size(); j++)
  92                                         if (ServerInstance->Config->ports[j]->GetPort() == listenports[i])
  93                                                 ServerInstance->Config->ports[j]->SetDescription("plaintext");
  94                         }
  95                 }
  96         }
  97
  98         virtual Version GetVersion()
  99         {
 100                 return Version(1, 1, 0, 0, VF_VENDOR, API_VERSION);
 101         }
 102
 103         void Implements(char* List)
 104         {
 105                 List[I_OnUnloadModule] = List[I_OnRawSocketRead] = List[I_OnRawSocketWrite] = List[I_OnRehash] = 1;
 106         }
 107
 108         virtual int OnRawSocketRead(int fd, char* buffer, unsigned int count, int &readresult)
 109         {
 110                 userrec* user = dynamic_cast<userrec*>(ServerInstance->FindDescriptor(fd));
 111
 112                 if (user == NULL)
 113                         return -1;
 114
 115                 int result = user->ReadData(buffer, count);
 116
 117                 if ((result == -1) && (errno == EAGAIN))
 118                         return -1;
 119                 else if (result < 1)
 120                         return 0;
 121
 122                 /* XXX: The core is more than happy to split lines purely on an \n
 123                  * rather than a \r\n. This is good for us as it means that the size
 124                  * of data we are receiving is exactly the same as the size of data
 125                  * we asked for, and we dont need to re-implement our own socket
 126                  * buffering (See below)
 127                  */
 128                 for (int n = 0; n < result; n++)
 129                         if (buffer[n] == 0)
 130                                 buffer[n] = '\n';
 131
 132                 readresult = result;
 133                 return result;
 134         }
 135
 136         virtual int OnRawSocketWrite(int fd, const char* buffer, int count)
 137         {
 138                 userrec* user = dynamic_cast<userrec*>(ServerInstance->FindDescriptor(fd));
 139
 140                 if (user == NULL)
 141                         return -1;
 142
 143                 /* We want to alter the buffer, so we have to make a copy */
 144                 char * tmpbuffer = new char[count + 1];
 145                 memcpy(tmpbuffer, buffer, count);
 146
 147                 /* XXX: This will actually generate lines "looking\0\0like\0\0this"
 148                  * rather than lines "looking\0like\0this". This shouldnt be a problem
 149                  * to the client, but it saves us a TON of processing and the need
 150                  * to re-implement socket buffering, as the data we are sending is
 151                  * exactly the same length as the data we are receiving.
 152                  */
 153                 for (int n = 0; n < count; n++)
 154                         if ((tmpbuffer[n] == '\r') || (tmpbuffer[n] == '\n'))
 155                                 tmpbuffer[n] = 0;
 156
 157                 user->AddWriteBuf(std::string(tmpbuffer,count));
 158                 delete [] tmpbuffer;
 159
 160                 return 1;
 161         }
 162
 163 };
 164
 165 MODULE_INIT(ModuleXMLSocket)
 166