-/* +------------------------------------+\r * | Inspire Internet Relay Chat Daemon |\r * +------------------------------------+\r *\r * InspIRCd: (C) 2002-2007 InspIRCd Development Team\r * See: http://www.inspircd.org/wiki/index.php/Credits\r *\r * This program is free but copyrighted software; see\r * the file COPYING for details.\r *\r * ---------------------------------------------------\r */\r\r#include "inspircd.h"\r#include "users.h"\r#include "modules.h"\r#include "dns.h"\r#ifndef WINDOWS\r#include <sys/socket.h>\r#include <netinet/in.h>\r#include <arpa/inet.h>\r#endif\r\r/* $ModDesc: Change user's hosts connecting from known CGI:IRC hosts */\r\renum CGItype { PASS, IDENT, PASSFIRST, IDENTFIRST, WEBIRC };\r\r\r/** Holds a CGI site's details\r */\rclass CGIhost : public classbase\r{\rpublic:\r std::string hostmask;\r CGItype type;\r std::string password;\r\r CGIhost(const std::string &mask = "", CGItype t = IDENTFIRST, const std::string &password ="")\r : hostmask(mask), type(t), password(password)\r {\r }\r};\rtypedef std::vector<CGIhost> CGIHostlist;\r\rclass cmd_webirc : public command_t\r{\r InspIRCd* Me;\r CGIHostlist Hosts;\r bool notify;\r public:\r cmd_webirc(InspIRCd* Me, CGIHostlist &Hosts, bool notify) : command_t(Me, "WEBIRC", 0, 4, true), Hosts(Hosts), notify(notify)\r {\r this->source = "m_cgiirc.so";\r this->syntax = "password client hostname ip";\r }\r CmdResult Handle(const char** parameters, int pcnt, userrec *user)\r {\r if(user->registered == REG_ALL)\r return CMD_FAILURE;\r \r for(CGIHostlist::iterator iter = Hosts.begin(); iter != Hosts.end(); iter++)\r {\r if(ServerInstance->MatchText(user->host, iter->hostmask) || ServerInstance->MatchText(user->GetIPString(), iter->hostmask))\r {\r if(iter->type == WEBIRC && parameters[0] == iter->password)\r {\r user->Extend("cgiirc_realhost", new std::string(user->host));\r user->Extend("cgiirc_realip", new std::string(user->GetIPString()));\r if (notify)\r ServerInstance->WriteOpers("*** Connecting user %s detected as using CGI:IRC (%s), changing real host to %s from %s", user->nick, user->host, parameters[2], user->host);\r user->Extend("cgiirc_webirc_hostname", new std::string(parameters[2]));\r user->Extend("cgiirc_webirc_ip", new std::string(parameters[3]));\r return CMD_LOCALONLY;\r }\r }\r }\r return CMD_FAILURE;\r }\r};\r\r\r/** Resolver for CGI:IRC hostnames encoded in ident/GECOS\r */\rclass CGIResolver : public Resolver\r{\r std::string typ;\r int theirfd;\r userrec* them;\r bool notify;\r public:\r CGIResolver(Module* me, InspIRCd* ServerInstance, bool NotifyOpers, const std::string &source, bool forward, userrec* u, int userfd, const std::string &type, bool &cached)\r : Resolver(ServerInstance, source, forward ? DNS_QUERY_A : DNS_QUERY_PTR4, cached, me), typ(type), theirfd(userfd), them(u), notify(NotifyOpers) { }\r\r virtual void OnLookupComplete(const std::string &result, unsigned int ttl, bool cached)\r {\r /* Check the user still exists */\r if ((them) && (them == ServerInstance->SE->GetRef(theirfd)))\r {\r if (notify)\r ServerInstance->WriteOpers("*** Connecting user %s detected as using CGI:IRC (%s), changing real host to %s from %s", them->nick, them->host, result.c_str(), typ.c_str());\r\r strlcpy(them->host, result.c_str(), 63);\r strlcpy(them->dhost, result.c_str(), 63);\r strlcpy(them->ident, "~cgiirc", 8);\r them->InvalidateCache();\r }\r }\r\r virtual void OnError(ResolverError e, const std::string &errormessage)\r {\r if ((them) && (them == ServerInstance->SE->GetRef(theirfd)))\r {\r if (notify)\r ServerInstance->WriteOpers("*** Connecting user %s detected as using CGI:IRC (%s), but their host can't be resolved from their %s!", them->nick, them->host,typ.c_str());\r }\r }\r\r virtual ~CGIResolver()\r {\r }\r};\r\rclass ModuleCgiIRC : public Module\r{\r cmd_webirc* mycommand;\r bool NotifyOpers;\r CGIHostlist Hosts;\rpublic:\r ModuleCgiIRC(InspIRCd* Me) : Module(Me)\r {\r \r OnRehash(NULL,"");\r mycommand=new cmd_webirc(Me, Hosts, NotifyOpers);\r ServerInstance->AddCommand(mycommand);\r }\r\r void Implements(char* List)\r {\r List[I_OnRehash] = List[I_OnUserRegister] = List[I_OnCleanup] = List[I_OnSyncUserMetaData] = List[I_OnDecodeMetaData] = List[I_OnUserQuit] = List[I_OnUserConnect] = 1;\r }\r \r virtual Priority Prioritize()\r {\r // We want to get here before m_cloaking and m_hostchange etc\r return PRIORITY_FIRST;\r }\r\r virtual void OnRehash(userrec* user, const std::string ¶meter)\r {\r ConfigReader Conf(ServerInstance);\r \r NotifyOpers = Conf.ReadFlag("cgiirc", "opernotice", 0); // If we send an oper notice when a CGI:IRC has their host changed.\r \r if(Conf.GetError() == CONF_VALUE_NOT_FOUND)\r NotifyOpers = true;\r \r for(int i = 0; i < Conf.Enumerate("cgihost"); i++)\r {\r std::string hostmask = Conf.ReadValue("cgihost", "mask", i); // An allowed CGI:IRC host\r std::string type = Conf.ReadValue("cgihost", "type", i); // What type of user-munging we do on this host.\r std::string password = Conf.ReadValue("cgihost", "password", i);\r \r if(hostmask.length())\r {\r if(type == "webirc" && !password.length()) {\r ServerInstance->Log(DEFAULT, "m_cgiirc: Missing password in config: %s", hostmask.c_str());\r } else {\r CGItype cgitype;\r if(type == "pass")\r cgitype = PASS;\r else if(type == "ident")\r cgitype = IDENT;\r else if(type == "passfirst")\r cgitype = PASSFIRST;\r else if(type == "webirc") {\r cgitype = WEBIRC;\r }\r Hosts.push_back(CGIhost(hostmask,cgitype, password.length() ? password : "" ));\r }\r }\r else\r {\r ServerInstance->Log(DEFAULT, "m_cgiirc.so: Invalid <cgihost:mask> value in config: %s", hostmask.c_str());\r continue;\r }\r }\r }\r\r virtual void OnCleanup(int target_type, void* item)\r {\r if(target_type == TYPE_USER)\r {\r userrec* user = (userrec*)item;\r std::string* realhost;\r std::string* realip;\r \r if(user->GetExt("cgiirc_realhost", realhost))\r {\r delete realhost;\r user->Shrink("cgiirc_realhost");\r }\r \r if(user->GetExt("cgiirc_realip", realip))\r {\r delete realip;\r user->Shrink("cgiirc_realip");\r }\r }\r }\r \r virtual void OnSyncUserMetaData(userrec* user, Module* proto, void* opaque, const std::string &extname, bool displayable)\r {\r if((extname == "cgiirc_realhost") || (extname == "cgiirc_realip"))\r {\r std::string* data;\r \r if(user->GetExt(extname, data))\r {\r proto->ProtoSendMetaData(opaque, TYPE_USER, user, extname, *data);\r }\r }\r }\r\r virtual void OnDecodeMetaData(int target_type, void* target, const std::string &extname, const std::string &extdata)\r {\r if(target_type == TYPE_USER)\r {\r userrec* dest = (userrec*)target;\r std::string* bleh;\r if(((extname == "cgiirc_realhost") || (extname == "cgiirc_realip")) && (!dest->GetExt(extname, bleh)))\r {\r dest->Extend(extname, new std::string(extdata));\r }\r }\r }\r\r virtual void OnUserQuit(userrec* user, const std::string &message, const std::string &oper_message)\r {\r OnCleanup(TYPE_USER, user);\r }\r \r\r virtual int OnUserRegister(userrec* user)\r { \r for(CGIHostlist::iterator iter = Hosts.begin(); iter != Hosts.end(); iter++)\r { \r if(ServerInstance->MatchText(user->host, iter->hostmask) || ServerInstance->MatchText(user->GetIPString(), iter->hostmask))\r {\r // Deal with it...\r if(iter->type == PASS)\r {\r CheckPass(user); // We do nothing if it fails so...\r }\r else if(iter->type == PASSFIRST && !CheckPass(user))\r {\r // If the password lookup failed, try the ident\r CheckIdent(user); // If this fails too, do nothing\r }\r else if(iter->type == IDENT)\r {\r CheckIdent(user); // Nothing on failure.\r }\r else if(iter->type == IDENTFIRST && !CheckIdent(user))\r {\r // If the ident lookup fails, try the password.\r CheckPass(user);\r }\r else if(iter->type == WEBIRC)\r {\r // We don't need to do anything here\r }\r return 0;\r }\r }\r return 0;\r }\r\r virtual void OnUserConnect(userrec* user)\r {\r std::string *webirc_hostname, *webirc_ip;\r if(user->GetExt("cgiirc_webirc_hostname", webirc_hostname))\r {\r strlcpy(user->host,webirc_hostname->c_str(),63);\r strlcpy(user->dhost,webirc_hostname->c_str(),63);\r delete webirc_hostname;\r user->InvalidateCache();\r user->Shrink("cgiirc_webirc_hostname");\r }\r if(user->GetExt("cgiirc_webirc_ip", webirc_ip))\r {\r bool valid=false;\r user->RemoveCloneCounts();\r#ifdef IPV6\r valid = (inet_pton(AF_INET6, webirc_ip->c_str(), &((sockaddr_in6*)user->ip)->sin6_addr) > 0); \r\r if(!valid)\r valid = (inet_aton(webirc_ip->c_str(), &((sockaddr_in*)user->ip)->sin_addr));\r#else\r if (inet_aton(webirc_ip->c_str(), &((sockaddr_in*)user->ip)->sin_addr))\r valid = true;\r#endif\r\r delete webirc_ip;\r user->InvalidateCache();\r user->Shrink("cgiirc_webirc_ip");\r ServerInstance->AddLocalClone(user);\r ServerInstance->AddGlobalClone(user);\r user->CheckClass();\r }\r }\r\r bool CheckPass(userrec* user)\r {\r if(IsValidHost(user->password))\r {\r user->Extend("cgiirc_realhost", new std::string(user->host));\r user->Extend("cgiirc_realip", new std::string(user->GetIPString()));\r strlcpy(user->host, user->password, 64);\r strlcpy(user->dhost, user->password, 64);\r user->InvalidateCache();\r\r bool valid = false;\r user->RemoveCloneCounts();\r#ifdef IPV6\r if (user->GetProtocolFamily() == AF_INET6)\r valid = (inet_pton(AF_INET6, user->password, &((sockaddr_in6*)user->ip)->sin6_addr) > 0);\r else\r valid = (inet_aton(user->password, &((sockaddr_in*)user->ip)->sin_addr));\r#else\r if (inet_aton(user->password, &((sockaddr_in*)user->ip)->sin_addr))\r valid = true;\r#endif\r ServerInstance->AddLocalClone(user);\r ServerInstance->AddGlobalClone(user);\r user->CheckClass();\r\r if (valid)\r {\r /* We were given a IP in the password, we don't do DNS so they get this is as their host as well. */\r if(NotifyOpers)\r ServerInstance->WriteOpers("*** Connecting user %s detected as using CGI:IRC (%s), changing real host to %s from PASS", user->nick, user->host, user->password);\r }\r else\r {\r /* We got as resolved hostname in the password. */\r try\r {\r\r bool cached;\r CGIResolver* r = new CGIResolver(this, ServerInstance, NotifyOpers, user->password, false, user, user->GetFd(), "PASS", cached);\r ServerInstance->AddResolver(r, cached);\r }\r catch (...)\r {\r if (NotifyOpers)\r ServerInstance->WriteOpers("*** Connecting user %s detected as using CGI:IRC (%s), but i could not resolve their hostname!", user->nick, user->host);\r }\r }\r \r *user->password = 0;\r\r /*if(NotifyOpers)\r ServerInstance->WriteOpers("*** Connecting user %s detected as using CGI:IRC (%s), changing real host to %s from PASS", user->nick, user->host, user->password);*/\r\r return true;\r }\r \r return false;\r }\r \r bool CheckIdent(userrec* user)\r {\r int ip[4];\r char* ident;\r char newip[16];\r int len = strlen(user->ident);\r \r if(len == 8)\r ident = user->ident;\r else if(len == 9 && *user->ident == '~')\r ident = user->ident+1;\r else\r return false;\r \r for(int i = 0; i < 4; i++)\r if(!HexToInt(ip[i], ident + i*2))\r return false;\r\r snprintf(newip, 16, "%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);\r \r user->Extend("cgiirc_realhost", new std::string(user->host));\r user->Extend("cgiirc_realip", new std::string(user->GetIPString()));\r user->RemoveCloneCounts();\r#ifdef IPV6\r if (user->GetProtocolFamily() == AF_INET6)\r inet_pton(AF_INET6, newip, &((sockaddr_in6*)user->ip)->sin6_addr);\r else\r#endif\r inet_aton(newip, &((sockaddr_in*)user->ip)->sin_addr);\r ServerInstance->AddLocalClone(user);\r ServerInstance->AddGlobalClone(user);\r user->CheckClass();\r try\r {\r strlcpy(user->host, newip, 16);\r strlcpy(user->dhost, newip, 16);\r strlcpy(user->ident, "~cgiirc", 8);\r\r bool cached;\r CGIResolver* r = new CGIResolver(this, ServerInstance, NotifyOpers, newip, false, user, user->GetFd(), "IDENT", cached);\r ServerInstance->AddResolver(r, cached);\r }\r catch (...)\r {\r strlcpy(user->host, newip, 16);\r strlcpy(user->dhost, newip, 16);\r strlcpy(user->ident, "~cgiirc", 8);\r user->InvalidateCache();\r\r if(NotifyOpers)\r ServerInstance->WriteOpers("*** Connecting user %s detected as using CGI:IRC (%s), but i could not resolve their hostname!", user->nick, user->host);\r }\r /*strlcpy(user->host, newip, 16);\r strlcpy(user->dhost, newip, 16);\r strlcpy(user->ident, "~cgiirc", 8);*/\r\r return true;\r }\r \r bool IsValidHost(const std::string &host)\r {\r if(!host.size())\r return false;\r \r for(unsigned int i = 0; i < host.size(); i++)\r {\r if( ((host[i] >= '0') && (host[i] <= '9')) ||\r ((host[i] >= 'A') && (host[i] <= 'Z')) ||\r ((host[i] >= 'a') && (host[i] <= 'z')) ||\r ((host[i] == '-') && (i > 0) && (i+1 < host.size()) && (host[i-1] != '.') && (host[i+1] != '.')) ||\r ((host[i] == '.') && (i > 0) && (i+1 < host.size())) )\r \r continue;\r else\r return false;\r }\r \r return true;\r }\r\r bool IsValidIP(const std::string &ip)\r {\r if(ip.size() < 7 || ip.size() > 15)\r return false;\r \r short sincedot = 0;\r short dots = 0;\r \r for(unsigned int i = 0; i < ip.size(); i++)\r {\r if((dots <= 3) && (sincedot <= 3))\r {\r if((ip[i] >= '0') && (ip[i] <= '9'))\r {\r sincedot++;\r }\r else if(ip[i] == '.')\r {\r sincedot = 0;\r dots++;\r }\r }\r else\r {\r return false;\r \r }\r }\r \r if(dots != 3)\r return false;\r \r return true;\r }\r \r bool HexToInt(int &out, const char* in)\r {\r char ip[3];\r ip[0] = in[0];\r ip[1] = in[1];\r ip[2] = 0;\r out = strtol(ip, NULL, 16);\r \r if(out > 255 || out < 0)\r return false;\r\r return true;\r }\r \r virtual ~ModuleCgiIRC()\r {\r }\r \r virtual Version GetVersion()\r {\r return Version(1,1,0,0,VF_VENDOR,API_VERSION);\r }\r \r};\r\rMODULE_INIT(ModuleCgiIRC)\r
\ No newline at end of file
+/* +------------------------------------+
+ * | Inspire Internet Relay Chat Daemon |
+ * +------------------------------------+
+ *
+ * InspIRCd: (C) 2002-2008 InspIRCd Development Team
+ * See: http://www.inspircd.org/wiki/index.php/Credits
+ *
+ * This program is free but copyrighted software; see
+ * the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#include "inspircd.h"
+
+#ifndef WINDOWS
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#endif
+
+/* $ModDesc: Change user's hosts connecting from known CGI:IRC hosts */
+
+enum CGItype { INVALID, PASS, IDENT, PASSFIRST, IDENTFIRST, WEBIRC };
+
+
+/** Holds a CGI site's details
+ */
+class CGIhost : public classbase
+{
+public:
+ std::string hostmask;
+ CGItype type;
+ std::string password;
+
+ CGIhost(const std::string &mask = "", CGItype t = IDENTFIRST, const std::string &spassword ="")
+ : hostmask(mask), type(t), password(spassword)
+ {
+ }
+};
+typedef std::vector<CGIhost> CGIHostlist;
+
+/*
+ * WEBIRC
+ * This is used for the webirc method of CGIIRC auth, and is (really) the best way to do these things.
+ * Syntax: WEBIRC password client hostname ip
+ * Where password is a shared key, client is the name of the "client" and version (e.g. cgiirc), hostname
+ * is the resolved host of the client issuing the command and IP is the real IP of the client.
+ *
+ * How it works:
+ * To tie in with the rest of cgiirc module, and to avoid race conditions, /webirc is only processed locally
+ * and simply sets metadata on the user, which is later decoded on full connect to give something meaningful.
+ */
+class CommandWebirc : public Command
+{
+ CGIHostlist Hosts;
+ bool notify;
+ public:
+ CommandWebirc(InspIRCd* Instance, CGIHostlist &cHosts, bool bnotify) : Command(Instance, "WEBIRC", 0, 4, true), Hosts(cHosts), notify(bnotify)
+ {
+ this->source = "m_cgiirc.so";
+ this->syntax = "password client hostname ip";
+ }
+ CmdResult Handle(const std::vector<std::string> ¶meters, User *user)
+ {
+ if(user->registered == REG_ALL)
+ return CMD_FAILURE;
+
+ for(CGIHostlist::iterator iter = Hosts.begin(); iter != Hosts.end(); iter++)
+ {
+ if(InspIRCd::Match(user->host, iter->hostmask) || InspIRCd::MatchCIDR(user->GetIPString(), iter->hostmask))
+ {
+ if(iter->type == WEBIRC && parameters[0] == iter->password)
+ {
+ user->Extend("cgiirc_realhost", new std::string(user->host));
+ user->Extend("cgiirc_realip", new std::string(user->GetIPString()));
+ if (notify)
+ ServerInstance->SNO->WriteToSnoMask('A', "Connecting user %s detected as using CGI:IRC (%s), changing real host to %s from %s", user->nick.c_str(), user->host.c_str(), parameters[2].c_str(), user->host.c_str());
+ user->Extend("cgiirc_webirc_hostname", new std::string(parameters[2]));
+ user->Extend("cgiirc_webirc_ip", new std::string(parameters[3]));
+ return CMD_LOCALONLY;
+ }
+ }
+ }
+ return CMD_FAILURE;
+ }
+};
+
+
+/** Resolver for CGI:IRC hostnames encoded in ident/GECOS
+ */
+class CGIResolver : public Resolver
+{
+ std::string typ;
+ int theirfd;
+ User* them;
+ bool notify;
+ public:
+ CGIResolver(Module* me, InspIRCd* Instance, bool NotifyOpers, const std::string &source, bool forward, User* u, int userfd, const std::string &type, bool &cached)
+ : Resolver(Instance, source, forward ? DNS_QUERY_A : DNS_QUERY_PTR4, cached, me), typ(type), theirfd(userfd), them(u), notify(NotifyOpers) { }
+
+ virtual void OnLookupComplete(const std::string &result, unsigned int ttl, bool cached, int resultnum = 0)
+ {
+ if (resultnum)
+ return;
+
+ /* Check the user still exists */
+ if ((them) && (them == ServerInstance->SE->GetRef(theirfd)))
+ {
+ if (notify)
+ ServerInstance->SNO->WriteToSnoMask('A', "Connecting user %s detected as using CGI:IRC (%s), changing real host to %s from %s", them->nick.c_str(), them->host.c_str(), result.c_str(), typ.c_str());
+
+ them->host.assign(result,0, 64);
+ them->dhost.assign(result, 0, 64);
+ if (querytype)
+ them->SetSockAddr(them->GetProtocolFamily(), result.c_str(), them->GetPort());
+ them->ident.assign("~cgiirc", 0, 8);
+ them->InvalidateCache();
+ them->CheckLines(true);
+ }
+ }
+
+ virtual void OnError(ResolverError e, const std::string &errormessage)
+ {
+ if ((them) && (them == ServerInstance->SE->GetRef(theirfd)))
+ {
+ if (notify)
+ ServerInstance->SNO->WriteToSnoMask('A', "Connecting user %s detected as using CGI:IRC (%s), but their host can't be resolved from their %s!", them->nick.c_str(), them->host.c_str(), typ.c_str());
+ }
+ }
+
+ virtual ~CGIResolver()
+ {
+ }
+};
+
+class ModuleCgiIRC : public Module
+{
+ CommandWebirc* mycommand;
+ bool NotifyOpers;
+ CGIHostlist Hosts;
+public:
+ ModuleCgiIRC(InspIRCd* Me) : Module(Me)
+ {
+
+ OnRehash(NULL,"");
+ mycommand = new CommandWebirc(Me, Hosts, NotifyOpers);
+ ServerInstance->AddCommand(mycommand);
+
+ Implementation eventlist[] = { I_OnRehash, I_OnUserRegister, I_OnCleanup, I_OnSyncUserMetaData, I_OnDecodeMetaData, I_OnUserDisconnect, I_OnUserConnect };
+ ServerInstance->Modules->Attach(eventlist, this, 7);
+ }
+
+
+ virtual void Prioritize()
+ {
+ ServerInstance->Modules->SetPriority(this, I_OnUserConnect, PRIO_FIRST);
+ }
+
+ virtual void OnRehash(User* user, const std::string ¶meter)
+ {
+ ConfigReader Conf(ServerInstance);
+ Hosts.clear();
+
+ NotifyOpers = Conf.ReadFlag("cgiirc", "opernotice", 0); // If we send an oper notice when a CGI:IRC has their host changed.
+
+ if(Conf.GetError() == CONF_VALUE_NOT_FOUND)
+ NotifyOpers = true;
+
+ for(int i = 0; i < Conf.Enumerate("cgihost"); i++)
+ {
+ std::string hostmask = Conf.ReadValue("cgihost", "mask", i); // An allowed CGI:IRC host
+ std::string type = Conf.ReadValue("cgihost", "type", i); // What type of user-munging we do on this host.
+ std::string password = Conf.ReadValue("cgihost", "password", i);
+
+ if(hostmask.length())
+ {
+ if (type == "webirc" && !password.length()) {
+ ServerInstance->Logs->Log("CONFIG",DEFAULT, "m_cgiirc: Missing password in config: %s", hostmask.c_str());
+ }
+ else
+ {
+ CGItype cgitype = INVALID;
+ if (type == "pass")
+ cgitype = PASS;
+ else if (type == "ident")
+ cgitype = IDENT;
+ else if (type == "passfirst")
+ cgitype = PASSFIRST;
+ else if (type == "webirc")
+ {
+ cgitype = WEBIRC;
+ }
+
+ if (cgitype == INVALID)
+ cgitype = PASS;
+
+ Hosts.push_back(CGIhost(hostmask,cgitype, password.length() ? password : "" ));
+ }
+ }
+ else
+ {
+ ServerInstance->Logs->Log("CONFIG",DEFAULT, "m_cgiirc.so: Invalid <cgihost:mask> value in config: %s", hostmask.c_str());
+ continue;
+ }
+ }
+ }
+
+ virtual void OnCleanup(int target_type, void* item)
+ {
+ if(target_type == TYPE_USER)
+ {
+ User* user = (User*)item;
+ std::string* realhost;
+ std::string* realip;
+
+ if(user->GetExt("cgiirc_realhost", realhost))
+ {
+ delete realhost;
+ user->Shrink("cgiirc_realhost");
+ }
+
+ if(user->GetExt("cgiirc_realip", realip))
+ {
+ delete realip;
+ user->Shrink("cgiirc_realip");
+ }
+ }
+ }
+
+ virtual void OnSyncUserMetaData(User* user, Module* proto, void* opaque, const std::string &extname, bool displayable)
+ {
+ if((extname == "cgiirc_realhost") || (extname == "cgiirc_realip"))
+ {
+ std::string* data;
+
+ if(user->GetExt(extname, data))
+ {
+ proto->ProtoSendMetaData(opaque, TYPE_USER, user, extname, *data);
+ }
+ }
+ }
+
+ virtual void OnDecodeMetaData(int target_type, void* target, const std::string &extname, const std::string &extdata)
+ {
+ if(target_type == TYPE_USER)
+ {
+ User* dest = (User*)target;
+ std::string* bleh;
+ if(((extname == "cgiirc_realhost") || (extname == "cgiirc_realip")) && (!dest->GetExt(extname, bleh)))
+ {
+ dest->Extend(extname, new std::string(extdata));
+ }
+ }
+ }
+
+ virtual void OnUserDisconnect(User* user)
+ {
+ OnCleanup(TYPE_USER, user);
+ }
+
+
+ virtual int OnUserRegister(User* user)
+ {
+ for(CGIHostlist::iterator iter = Hosts.begin(); iter != Hosts.end(); iter++)
+ {
+ if(InspIRCd::Match(user->host, iter->hostmask) || InspIRCd::MatchCIDR(user->GetIPString(), iter->hostmask))
+ {
+ // Deal with it...
+ if(iter->type == PASS)
+ {
+ CheckPass(user); // We do nothing if it fails so...
+ user->CheckLines(true);
+ }
+ else if(iter->type == PASSFIRST && !CheckPass(user))
+ {
+ // If the password lookup failed, try the ident
+ CheckIdent(user); // If this fails too, do nothing
+ user->CheckLines(true);
+ }
+ else if(iter->type == IDENT)
+ {
+ CheckIdent(user); // Nothing on failure.
+ user->CheckLines(true);
+ }
+ else if(iter->type == IDENTFIRST && !CheckIdent(user))
+ {
+ // If the ident lookup fails, try the password.
+ CheckPass(user);
+ user->CheckLines(true);
+ }
+ else if(iter->type == WEBIRC)
+ {
+ // We don't need to do anything here
+ }
+ return 0;
+ }
+ }
+ return 0;
+ }
+
+ virtual void OnUserConnect(User* user)
+ {
+ std::string *webirc_hostname, *webirc_ip;
+ if(user->GetExt("cgiirc_webirc_hostname", webirc_hostname))
+ {
+ user->host.assign(*webirc_hostname, 0, 64);
+ user->dhost.assign(*webirc_hostname, 0, 64);
+ delete webirc_hostname;
+ user->InvalidateCache();
+ user->Shrink("cgiirc_webirc_hostname");
+ }
+ if(user->GetExt("cgiirc_webirc_ip", webirc_ip))
+ {
+ ServerInstance->Users->RemoveCloneCounts(user);
+ user->SetSockAddr(user->GetProtocolFamily(), webirc_ip->c_str(), user->GetPort());
+ delete webirc_ip;
+ user->InvalidateCache();
+ user->Shrink("cgiirc_webirc_ip");
+ ServerInstance->Users->AddLocalClone(user);
+ ServerInstance->Users->AddGlobalClone(user);
+ user->CheckClass();
+ user->CheckLines(true);
+ }
+ }
+
+ bool CheckPass(User* user)
+ {
+ if(IsValidHost(user->password))
+ {
+ user->Extend("cgiirc_realhost", new std::string(user->host));
+ user->Extend("cgiirc_realip", new std::string(user->GetIPString()));
+ user->host.assign(user->password, 0, 64);
+ user->dhost.assign(user->password, 0, 64);
+ user->InvalidateCache();
+
+ bool valid = false;
+ ServerInstance->Users->RemoveCloneCounts(user);
+#ifdef IPV6
+ if (user->GetProtocolFamily() == AF_INET6)
+ valid = (inet_pton(AF_INET6, user->password.c_str(), &((sockaddr_in6*)user->ip)->sin6_addr) > 0);
+ else
+ valid = (inet_aton(user->password.c_str(), &((sockaddr_in*)user->ip)->sin_addr));
+#else
+ if (inet_aton(user->password.c_str(), &((sockaddr_in*)user->ip)->sin_addr))
+ valid = true;
+#endif
+ ServerInstance->Users->AddLocalClone(user);
+ ServerInstance->Users->AddGlobalClone(user);
+ user->CheckClass();
+
+ if (valid)
+ {
+ /* We were given a IP in the password, we don't do DNS so they get this is as their host as well. */
+ if(NotifyOpers)
+ ServerInstance->SNO->WriteToSnoMask('A', "Connecting user %s detected as using CGI:IRC (%s), changing real host to %s from PASS", user->nick.c_str(), user->host.c_str(), user->password.c_str());
+ }
+ else
+ {
+ /* We got as resolved hostname in the password. */
+ try
+ {
+
+ bool cached;
+ CGIResolver* r = new CGIResolver(this, ServerInstance, NotifyOpers, user->password, false, user, user->GetFd(), "PASS", cached);
+ ServerInstance->AddResolver(r, cached);
+ }
+ catch (...)
+ {
+ if (NotifyOpers)
+ ServerInstance->SNO->WriteToSnoMask('A', "Connecting user %s detected as using CGI:IRC (%s), but I could not resolve their hostname!", user->nick.c_str(), user->host.c_str());
+ }
+ }
+
+ user->password.clear();
+ return true;
+ }
+
+ return false;
+ }
+
+ bool CheckIdent(User* user)
+ {
+ int ip[4];
+ const char* ident;
+ char newip[16];
+ int len = user->ident.length();
+
+ if(len == 8)
+ ident = user->ident.c_str();
+ else if(len == 9 && user->ident[0] == '~')
+ ident = user->ident.c_str() + 1;
+ else
+ return false;
+
+ for(int i = 0; i < 4; i++)
+ if(!HexToInt(ip[i], ident + i*2))
+ return false;
+
+ snprintf(newip, 16, "%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]);
+
+ user->Extend("cgiirc_realhost", new std::string(user->host));
+ user->Extend("cgiirc_realip", new std::string(user->GetIPString()));
+ ServerInstance->Users->RemoveCloneCounts(user);
+ user->SetSockAddr(user->GetProtocolFamily(), newip, user->GetPort());
+ ServerInstance->Users->AddLocalClone(user);
+ ServerInstance->Users->AddGlobalClone(user);
+ user->CheckClass();
+ try
+ {
+ user->host.assign(newip, 0, 16);
+ user->dhost.assign(newip, 0, 16);
+ user->ident.assign("~cgiirc", 0, 8);
+
+ bool cached;
+ CGIResolver* r = new CGIResolver(this, ServerInstance, NotifyOpers, newip, false, user, user->GetFd(), "IDENT", cached);
+ ServerInstance->AddResolver(r, cached);
+ }
+ catch (...)
+ {
+ user->host.assign(newip, 0, 16);
+ user->dhost.assign(newip, 0, 16);
+ user->ident.assign("~cgiirc", 0, 8);
+ user->InvalidateCache();
+
+ if(NotifyOpers)
+ ServerInstance->SNO->WriteToSnoMask('A', "Connecting user %s detected as using CGI:IRC (%s), but I could not resolve their hostname!", user->nick.c_str(), user->host.c_str());
+ }
+
+ return true;
+ }
+
+ bool IsValidHost(const std::string &host)
+ {
+ if(!host.size())
+ return false;
+
+ for(unsigned int i = 0; i < host.size(); i++)
+ {
+ if( ((host[i] >= '0') && (host[i] <= '9')) ||
+ ((host[i] >= 'A') && (host[i] <= 'Z')) ||
+ ((host[i] >= 'a') && (host[i] <= 'z')) ||
+ ((host[i] == '-') && (i > 0) && (i+1 < host.size()) && (host[i-1] != '.') && (host[i+1] != '.')) ||
+ ((host[i] == '.') && (i > 0) && (i+1 < host.size())) )
+
+ continue;
+ else
+ return false;
+ }
+
+ return true;
+ }
+
+ bool IsValidIP(const std::string &ip)
+ {
+ if(ip.size() < 7 || ip.size() > 15)
+ return false;
+
+ short sincedot = 0;
+ short dots = 0;
+
+ for(unsigned int i = 0; i < ip.size(); i++)
+ {
+ if((dots <= 3) && (sincedot <= 3))
+ {
+ if((ip[i] >= '0') && (ip[i] <= '9'))
+ {
+ sincedot++;
+ }
+ else if(ip[i] == '.')
+ {
+ sincedot = 0;
+ dots++;
+ }
+ }
+ else
+ {
+ return false;
+
+ }
+ }
+
+ if(dots != 3)
+ return false;
+
+ return true;
+ }
+
+ bool HexToInt(int &out, const char* in)
+ {
+ char ip[3];
+ ip[0] = in[0];
+ ip[1] = in[1];
+ ip[2] = 0;
+ out = strtol(ip, NULL, 16);
+
+ if(out > 255 || out < 0)
+ return false;
+
+ return true;
+ }
+
+ virtual ~ModuleCgiIRC()
+ {
+ }
+
+ virtual Version GetVersion()
+ {
+ return Version("$Id$",VF_VENDOR,API_VERSION);
+ }
+
+};
+
+MODULE_INIT(ModuleCgiIRC)