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authorom <om@e03df62e-2008-0410-955e-edbf42e46eb7>2006-07-12 13:29:04 +0000
committerom <om@e03df62e-2008-0410-955e-edbf42e46eb7>2006-07-12 13:29:04 +0000
commitcabf8c1b2f68b54f41e75e891f1348c25432bcb8 (patch)
treebabd7771a6cf1eeceb782fa9408ca7e3f29f5999 /src
parent4917b48d84d52218fc040713d4ecf1a0aea20f4f (diff)
Add part-finished m_cgiirc module for Brain to play with
git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@4362 e03df62e-2008-0410-955e-edbf42e46eb7
Diffstat (limited to 'src')
-rw-r--r--src/modules/m_cgiirc.cpp367
1 files changed, 367 insertions, 0 deletions
diff --git a/src/modules/m_cgiirc.cpp b/src/modules/m_cgiirc.cpp
new file mode 100644
index 000000000..6eb3f877c
--- /dev/null
+++ b/src/modules/m_cgiirc.cpp
@@ -0,0 +1,367 @@
+/* +------------------------------------+
+ * | Inspire Internet Relay Chat Daemon |
+ * +------------------------------------+
+ *
+ * InspIRCd is copyright (C) 2002-2004 ChatSpike-Dev.
+ * E-mail:
+ * <brain@chatspike.net>
+ * <Craig@chatspike.net>
+ * <omster@gmail.com>
+ *
+ * Written by Craig Edwards, Craig McLure, and others.
+ * This program is free but copyrighted software; see
+ * the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#include <vector>
+#include <string>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include "users.h"
+#include "modules.h"
+#include "helperfuncs.h"
+
+/* $ModDesc: Change user's hosts connecting from known CGI:IRC hosts */
+
+enum CGItype { PASS, IDENT, PASSFIRST, IDENTFIRST };
+
+class CGIhost
+{
+public:
+ std::string hostmask;
+ CGItype type;
+
+ CGIhost(const std::string &mask = "", CGItype t = IDENTFIRST)
+ : hostmask(mask), type(t)
+ {
+ }
+};
+
+typedef std::vector<CGIhost> CGIHostlist;
+
+class ModuleCgiIRC : public Module
+{
+ Server *Srv;
+ bool NotifyOpers;
+ CGIHostlist Hosts;
+public:
+ ModuleCgiIRC(Server* Me) : Module::Module(Me)
+ {
+ Srv = Me;
+ OnRehash("");
+ }
+
+ void Implements(char* List)
+ {
+ List[I_OnRehash] = List[I_OnUserRegister] = List[I_OnCleanup] = List[I_OnSyncUserMetaData] = List[I_OnDecodeMetaData] = List[I_OnUserQuit] = 1;
+ }
+
+ virtual Priority Prioritize()
+ {
+ // We want to get here before m_cloaking and m_hostchange etc
+ return PRIORITY_FIRST;
+ }
+
+ virtual void OnRehash(const std::string &parameter)
+ {
+ ConfigReader Conf;
+
+ 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.
+
+ if(hostmask.length())
+ {
+ Hosts.push_back(CGIhost(hostmask));
+
+ if(type == "pass")
+ Hosts.back().type = PASS;
+ else if(type == "ident")
+ Hosts.back().type = IDENT;
+ else if(type == "passfirst")
+ Hosts.back().type = PASSFIRST;
+ }
+ else
+ {
+ log(DEBUG, "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)
+ {
+ userrec* user = (userrec*)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(userrec* user, Module* proto, void* opaque, const std::string &extname)
+ {
+ 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)
+ {
+ userrec* dest = (userrec*)target;
+ std::string* bleh;
+ if(((extname == "cgiirc_realhost") || (extname == "cgiirc_realip")) && (!dest->GetExt(extname, bleh)))
+ {
+ dest->Extend(extname, new std::string(extdata));
+ }
+ }
+ }
+
+ virtual void OnUserQuit(userrec* user, const std::string &message)
+ {
+ OnCleanup(TYPE_USER, user);
+ }
+
+
+ virtual void OnUserRegister(userrec* user)
+ {
+ log(DEBUG, "m_cgiirc.so: User %s registering", user->nick);
+
+ for(CGIHostlist::iterator iter = Hosts.begin(); iter != Hosts.end(); iter++)
+ {
+ log(DEBUG, "m_cgiirc.so: Matching %s against (%s or %s)", iter->hostmask.c_str(), user->host, inet_ntoa(user->ip4));
+
+ if(Srv->MatchText(user->host, iter->hostmask) || Srv->MatchText(inet_ntoa(user->ip4), iter->hostmask))
+ {
+ // Deal with it...
+ log(DEBUG, "m_cgiirc.so: Handling CGI:IRC user: %s (%s) matched %s", user->GetFullRealHost(), inet_ntoa(user->ip4), iter->hostmask.c_str());
+
+ if(iter->type == PASS)
+ {
+ CheckPass(user); // We do nothing if it fails so...
+ }
+ else if(iter->type == PASSFIRST && !CheckPass(user))
+ {
+ // If the password lookup failed, try the ident
+ CheckIdent(user); // If this fails too, do nothing
+ }
+ else if(iter->type == IDENT)
+ {
+ CheckIdent(user); // Nothing on failure.
+ }
+ else if(iter->type == IDENTFIRST && !CheckIdent(user))
+ {
+ // If the ident lookup fails, try the password.
+ CheckPass(user);
+ }
+
+ return;
+ }
+ }
+ }
+
+ bool CheckPass(userrec* user)
+ {
+ log(DEBUG, "m_cgiirc.so: CheckPass(%s) - %s", user->nick, user->password);
+
+ if(IsValidHost(user->password))
+ {
+ user->Extend("cgiirc_realhost", new std::string(user->host));
+ user->Extend("cgiirc_realip", new std::string(inet_ntoa(user->ip4)));
+ strlcpy(user->host, user->password, 64);
+ strlcpy(user->dhost, user->password, 64);
+
+ if(inet_aton(user->password, &user->ip4))
+ {
+ /* We were given a IP in the password, we don't do DNS so they get this is as their host as well. */
+ log(DEBUG, "m_cgiirc.so: Got an IP in the user's password");
+ }
+ else
+ {
+ /* We got as resolved hostname in the password. */
+ inet_aton("0.0.0.0", &user->ip4);
+ log(DEBUG, "m_cgiirc.so: Got a hostname in the user's password");
+ }
+
+ *user->password = 0;
+
+ if(NotifyOpers)
+ WriteOpers("*** Connecting user %s detected as using CGI:IRC (%s), changing real host to %s from PASS", user->nick, user->host, user->password);
+
+ return true;
+ }
+ else
+ {
+ log(DEBUG, "m_cgiirc.so: User's password was not a valid host");
+ }
+
+ return false;
+ }
+
+ bool CheckIdent(userrec* user)
+ {
+ int ip[4];
+ char* ident;
+ char newip[16];
+ int len = strlen(user->ident);
+
+ if(len == 8)
+ ident = user->ident;
+ else if(len == 9 && *user->ident == '~')
+ ident = user->ident+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(inet_ntoa(user->ip4)));
+ inet_aton(newip, &user->ip4);
+ strlcpy(user->host, newip, 16);
+ strlcpy(user->dhost, newip, 16);
+ strlcpy(user->ident, "~cgiirc", 8);
+
+ if(NotifyOpers)
+ WriteOpers("*** Connecting user %s detected as using CGI:IRC (%s), changing real host to %s from ident", user->nick, user->host, newip);
+
+ 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(1,0,0,0,VF_VENDOR);
+ }
+
+};
+
+class ModuleCgiIRCFactory : public ModuleFactory
+{
+ public:
+ ModuleCgiIRCFactory()
+ {
+ }
+
+ ~ModuleCgiIRCFactory()
+ {
+ }
+
+ virtual Module * CreateModule(Server* Me)
+ {
+ return new ModuleCgiIRC(Me);
+ }
+
+};
+
+
+extern "C" void * init_module( void )
+{
+ return new ModuleCgiIRCFactory;
+}