src/modules/m_xmlsocket.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd: (C) 2002-2008 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<std::string> listenports;
  22
  23  public:
  24
  25         ModuleXMLSocket(InspIRCd* Me)
  26                 : Module(Me)
  27         {
  28                 OnRehash(NULL,"");
  29                 Implementation eventlist[] = { I_OnUnloadModule, I_OnRawSocketRead, I_OnRawSocketWrite, I_OnRehash, I_OnHookUserIO, I_OnCleanup };
  30                 ServerInstance->Modules->Attach(eventlist, this, 6);
  31         }
  32
  33         bool isin(const std::string &hostandport, const std::vector<std::string> &portlist)
  34         {
  35                 return std::find(portlist.begin(), portlist.end(), hostandport) != portlist.end();
  36         }
  37
  38         virtual void OnRehash(User* user, const std::string &param)
  39         {
  40
  41                 Conf = new ConfigReader(ServerInstance);
  42
  43                 listenports.clear();
  44
  45                 for (int i = 0; i < Conf->Enumerate("bind"); i++)
  46                 {
  47                         // For each <bind> tag
  48                         std::string x = Conf->ReadValue("bind", "type", i);
  49                         if (((x.empty()) || (x == "clients")) && (Conf->ReadFlag("bind", "xmlsocket", i)))
  50                         {
  51                                 // Get the port we're meant to be listening on with SSL
  52                                 std::string port = Conf->ReadValue("bind", "port", i);
  53                                 std::string addr = Conf->ReadValue("bind", "address", i);
  54                                 irc::portparser portrange(port, false);
  55                                 long portno = -1;
  56                                 while ((portno = portrange.GetToken()))
  57                                 {
  58                                         try
  59                                         {
  60                                                 listenports.push_back(addr + ":" + ConvToStr(portno));
  61                                                 for (size_t j = 0; j < ServerInstance->Config->ports.size(); j++)
  62                                                         if ((ServerInstance->Config->ports[i]->GetPort() == portno) && (ServerInstance->Config->ports[i]->GetIP() == addr))
  63                                                                 ServerInstance->Config->ports[j]->SetDescription("xml");
  64                                         }
  65                                         catch (ModuleException &e)
  66                                         {
  67                                                 ServerInstance->Logs->Log("m_xmlsocket",DEFAULT, "m_xmlsocket.so: FAILED to enable XMLSocket on port %d: %s. Maybe you have another similar module loaded?", portno, e.GetReason());
  68                                         }
  69                                 }
  70                         }
  71                 }
  72
  73                 delete Conf;
  74         }
  75
  76         virtual ~ModuleXMLSocket()
  77         {
  78         }
  79
  80         virtual void OnUnloadModule(Module* mod, const std::string &name)
  81         {
  82                 if (mod == this)
  83                 {
  84                         for(unsigned int i = 0; i < listenports.size(); i++)
  85                         {
  86                                 for (size_t j = 0; j < ServerInstance->Config->ports.size(); j++)
  87                                         if (listenports[i] == (ServerInstance->Config->ports[j]->GetIP()+":"+ConvToStr(ServerInstance->Config->ports[j]->GetPort())))
  88                                                 ServerInstance->Config->ports[j]->SetDescription("plaintext");
  89                         }
  90                 }
  91         }
  92
  93         virtual void OnCleanup(int target_type, void* item)
  94         {
  95                 if(target_type == TYPE_USER)
  96                 {
  97                         User* user = (User*)item;
  98                         if(user->io == this)
  99                                 user->io = NULL;
 100                 }
 101         }
 102
 103         virtual Version GetVersion()
 104         {
 105                 return Version(1, 2, 0, 0, VF_VENDOR, API_VERSION);
 106         }
 107
 108         virtual void OnHookUserIO(User* user, const std::string &targetip)
 109         {
 110                 if (!user->io && isin(targetip+":"+ConvToStr(user->GetPort()),listenports))
 111                 {
 112                         /* Hook the user with our module */
 113                         user->io = this;
 114                 }
 115         }
 116
 117         virtual int OnRawSocketRead(int fd, char* buffer, unsigned int count, int &readresult)
 118         {
 119                 User* user = dynamic_cast<User*>(ServerInstance->FindDescriptor(fd));
 120
 121                 if (user == NULL)
 122                         return -1;
 123
 124                 int result = user->ReadData(buffer, count);
 125
 126                 if ((result == -1) && (errno == EAGAIN))
 127                         return -1;
 128                 else if (result < 1)
 129                         return 0;
 130
 131                 /* XXX: The core is more than happy to split lines purely on an \n
 132                  * rather than a \r\n. This is good for us as it means that the size
 133                  * of data we are receiving is exactly the same as the size of data
 134                  * we asked for, and we dont need to re-implement our own socket
 135                  * buffering (See below)
 136                  */
 137                 for (int n = 0; n < result; n++)
 138                         if (buffer[n] == 0)
 139                                 buffer[n] = '\n';
 140
 141                 readresult = result;
 142                 return result;
 143         }
 144
 145         virtual int OnRawSocketWrite(int fd, const char* buffer, int count)
 146         {
 147                 User* user = dynamic_cast<User*>(ServerInstance->FindDescriptor(fd));
 148
 149                 if (user == NULL)
 150                         return -1;
 151
 152                 /* We want to alter the buffer, so we have to make a copy */
 153                 char * tmpbuffer = new char[count + 1];
 154                 memcpy(tmpbuffer, buffer, count);
 155
 156                 /* XXX: This will actually generate lines "looking\0\0like\0\0this"
 157                  * rather than lines "looking\0like\0this". This shouldnt be a problem
 158                  * to the client, but it saves us a TON of processing and the need
 159                  * to re-implement socket buffering, as the data we are sending is
 160                  * exactly the same length as the data we are receiving.
 161                  */
 162                 for (int n = 0; n < count; n++)
 163                         if ((tmpbuffer[n] == '\r') || (tmpbuffer[n] == '\n'))
 164                                 tmpbuffer[n] = 0;
 165
 166                 user->AddWriteBuf(std::string(tmpbuffer,count));
 167                 delete [] tmpbuffer;
 168
 169                 return 1;
 170         }
 171
 172 };
 173
 174 MODULE_INIT(ModuleXMLSocket)
 175