-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * InspIRCd: (C) 2002-2007 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ * Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2006-2008 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2007 Craig Edwards <craigedwards@brainbox.cc>
+ * Copyright (C) 2006-2007 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 2007 John Brooks <john.brooks@dereferenced.net>
*
- * This program is free but copyrighted software; see
- * the file COPYING for details.
+ * This file is part of InspIRCd. InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
*
- * ---------------------------------------------------
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+
#include "inspircd.h"
#include "xline.h"
-#include "dns.h"
-#include "users.h"
-#include "channels.h"
-#include "modules.h"
-
-#ifndef WINDOWS
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#endif
/* $ModDesc: Provides handling of DNS blacklists */
/* Class holding data for a single entry */
-class DNSBLConfEntry
+class DNSBLConfEntry : public refcountbase
{
public:
- enum EnumBanaction { I_UNKNOWN, I_KILL, I_ZLINE, I_KLINE, I_GLINE };
- std::string name, domain, reason;
+ enum EnumBanaction { I_UNKNOWN, I_KILL, I_ZLINE, I_KLINE, I_GLINE, I_MARK };
+ enum EnumType { A_RECORD, A_BITMASK };
+ std::string name, ident, host, domain, reason;
EnumBanaction banaction;
+ EnumType type;
long duration;
int bitmask;
+ unsigned char records[256];
unsigned long stats_hits, stats_misses;
- DNSBLConfEntry(): duration(86400),bitmask(0),stats_hits(0), stats_misses(0) {}
+ DNSBLConfEntry(): type(A_BITMASK),duration(86400),bitmask(0),stats_hits(0), stats_misses(0) {}
~DNSBLConfEntry() { }
};
*/
class DNSBLResolver : public Resolver
{
- int theirfd;
- userrec* them;
- DNSBLConfEntry *ConfEntry;
+ std::string theiruid;
+ LocalStringExt& nameExt;
+ LocalIntExt& countExt;
+ reference<DNSBLConfEntry> ConfEntry;
public:
- DNSBLResolver(Module *me, InspIRCd *ServerInstance, const std::string &hostname, userrec* u, int userfd, DNSBLConfEntry *conf, bool &cached)
- : Resolver(ServerInstance, hostname, DNS_QUERY_A, cached, me)
+ DNSBLResolver(Module *me, LocalStringExt& match, LocalIntExt& ctr, const std::string &hostname, LocalUser* u, reference<DNSBLConfEntry> conf, bool &cached)
+ : Resolver(hostname, DNS_QUERY_A, cached, me), theiruid(u->uuid), nameExt(match), countExt(ctr), ConfEntry(conf)
{
- theirfd = userfd;
- them = u;
- ConfEntry = conf;
}
+ /* Note: This may be called multiple times for multiple A record results */
virtual void OnLookupComplete(const std::string &result, unsigned int ttl, bool cached)
{
/* Check the user still exists */
- if ((them) && (them == ServerInstance->SE->GetRef(theirfd)))
+ LocalUser* them = (LocalUser*)ServerInstance->FindUUID(theiruid);
+ if (them)
{
+ int i = countExt.get(them);
+ if (i)
+ countExt.set(them, i - 1);
// Now we calculate the bitmask: 256*(256*(256*a+b)+c)+d
if(result.length())
{
- unsigned int bitmask = 0;
- bool show = false;
+ unsigned int bitmask = 0, record = 0;
+ bool match = false;
in_addr resultip;
- /* Convert the result to an in_addr (we can gaurantee we got ipv4)
- * Whoever did the loop that was here before, I AM CONFISCATING
- * YOUR CRACKPIPE. you know who you are. -- Brain
- */
inet_aton(result.c_str(), &resultip);
- bitmask = resultip.s_addr >> 24; /* Last octet (network byte order */
- bitmask &= ConfEntry->bitmask;
+ switch (ConfEntry->type)
+ {
+ case DNSBLConfEntry::A_BITMASK:
+ bitmask = resultip.s_addr >> 24; /* Last octet (network byte order) */
+ bitmask &= ConfEntry->bitmask;
+ match = (bitmask != 0);
+ break;
+ case DNSBLConfEntry::A_RECORD:
+ record = resultip.s_addr >> 24; /* Last octet */
+ match = (ConfEntry->records[record] == 1);
+ break;
+ }
- if (bitmask != 0)
+ if (match)
{
std::string reason = ConfEntry->reason;
std::string::size_type x = reason.find("%ip%");
{
case DNSBLConfEntry::I_KILL:
{
- userrec::QuitUser(ServerInstance, them, std::string("Killed (") + reason + ")");
+ ServerInstance->Users->QuitUser(them, "Killed (" + reason + ")");
+ break;
+ }
+ case DNSBLConfEntry::I_MARK:
+ {
+ if (!ConfEntry->ident.empty())
+ {
+ them->WriteServ("304 " + them->nick + " :Your ident has been set to " + ConfEntry->ident + " because you matched " + reason);
+ them->ChangeIdent(ConfEntry->ident.c_str());
+ }
+
+ if (!ConfEntry->host.empty())
+ {
+ them->WriteServ("304 " + them->nick + " :Your host has been set to " + ConfEntry->host + " because you matched " + reason);
+ them->ChangeDisplayedHost(ConfEntry->host.c_str());
+ }
+
+ nameExt.set(them, ConfEntry->name);
break;
}
case DNSBLConfEntry::I_KLINE:
{
- std::string ban = std::string("*@") + them->GetIPString();
- if (show)
- ServerInstance->XLines->apply_lines(APPLY_KLINES);
- show = ServerInstance->XLines->add_kline(ConfEntry->duration, ServerInstance->Config->ServerName, reason.c_str(), ban.c_str());
- FOREACH_MOD(I_OnAddKLine,OnAddKLine(ConfEntry->duration, NULL, reason, ban));
+ KLine* kl = new KLine(ServerInstance->Time(), ConfEntry->duration, ServerInstance->Config->ServerName.c_str(), reason.c_str(),
+ "*", them->GetIPString());
+ if (ServerInstance->XLines->AddLine(kl,NULL))
+ {
+ std::string timestr = ServerInstance->TimeString(kl->expiry);
+ ServerInstance->SNO->WriteGlobalSno('x',"K:line added due to DNSBL match on *@%s to expire on %s: %s",
+ them->GetIPString(), timestr.c_str(), reason.c_str());
+ ServerInstance->XLines->ApplyLines();
+ }
+ else
+ {
+ delete kl;
+ return;
+ }
break;
}
case DNSBLConfEntry::I_GLINE:
{
- std::string ban = std::string("*@") + them->GetIPString();
- show = ServerInstance->XLines->add_gline(ConfEntry->duration, ServerInstance->Config->ServerName, reason.c_str(), ban.c_str());
- if (show)
- ServerInstance->XLines->apply_lines(APPLY_GLINES);
- FOREACH_MOD(I_OnAddGLine,OnAddGLine(ConfEntry->duration, NULL, reason, ban));
+ GLine* gl = new GLine(ServerInstance->Time(), ConfEntry->duration, ServerInstance->Config->ServerName.c_str(), reason.c_str(),
+ "*", them->GetIPString());
+ if (ServerInstance->XLines->AddLine(gl,NULL))
+ {
+ std::string timestr = ServerInstance->TimeString(gl->expiry);
+ ServerInstance->SNO->WriteGlobalSno('x',"G:line added due to DNSBL match on *@%s to expire on %s: %s",
+ them->GetIPString(), timestr.c_str(), reason.c_str());
+ ServerInstance->XLines->ApplyLines();
+ }
+ else
+ {
+ delete gl;
+ return;
+ }
break;
}
case DNSBLConfEntry::I_ZLINE:
{
- show = ServerInstance->XLines->add_zline(ConfEntry->duration, ServerInstance->Config->ServerName, reason.c_str(), them->GetIPString());
- if (show)
- ServerInstance->XLines->apply_lines(APPLY_ZLINES);
- FOREACH_MOD(I_OnAddZLine,OnAddZLine(ConfEntry->duration, NULL, reason, them->GetIPString()));
+ ZLine* zl = new ZLine(ServerInstance->Time(), ConfEntry->duration, ServerInstance->Config->ServerName.c_str(), reason.c_str(),
+ them->GetIPString());
+ if (ServerInstance->XLines->AddLine(zl,NULL))
+ {
+ std::string timestr = ServerInstance->TimeString(zl->expiry);
+ ServerInstance->SNO->WriteGlobalSno('x',"Z:line added due to DNSBL match on *@%s to expire on %s: %s",
+ them->GetIPString(), timestr.c_str(), reason.c_str());
+ ServerInstance->XLines->ApplyLines();
+ }
+ else
+ {
+ delete zl;
+ return;
+ }
break;
}
case DNSBLConfEntry::I_UNKNOWN:
break;
}
- if (show)
- {
- ServerInstance->WriteOpers("*** Connecting user %s detected as being on a DNS blacklist (%s) with result %d", them->GetFullRealHost(), ConfEntry->name.c_str(), bitmask);
- }
+ ServerInstance->SNO->WriteGlobalSno('a', "Connecting user %s%s detected as being on a DNS blacklist (%s) with result %d", them->nick.empty() ? "<unknown>" : "", them->GetFullRealHost().c_str(), ConfEntry->domain.c_str(), (ConfEntry->type==DNSBLConfEntry::A_BITMASK) ? bitmask : record);
}
else
ConfEntry->stats_misses++;
virtual void OnError(ResolverError e, const std::string &errormessage)
{
+ LocalUser* them = (LocalUser*)ServerInstance->FindUUID(theiruid);
+ if (them)
+ {
+ int i = countExt.get(them);
+ if (i)
+ countExt.set(them, i - 1);
+ }
}
virtual ~DNSBLResolver()
class ModuleDNSBL : public Module
{
- private:
- std::vector<DNSBLConfEntry *> DNSBLConfEntries;
+ std::vector<reference<DNSBLConfEntry> > DNSBLConfEntries;
+ LocalStringExt nameExt;
+ LocalIntExt countExt;
/*
* Convert a string to EnumBanaction
return DNSBLConfEntry::I_ZLINE;
if(action.compare("GLINE")==0)
return DNSBLConfEntry::I_GLINE;
+ if(action.compare("MARK")==0)
+ return DNSBLConfEntry::I_MARK;
return DNSBLConfEntry::I_UNKNOWN;
}
public:
- ModuleDNSBL(InspIRCd *Me) : Module(Me)
- {
- ReadConf();
- }
+ ModuleDNSBL() : nameExt("dnsbl_match", this), countExt("dnsbl_pending", this) { }
- virtual ~ModuleDNSBL()
+ void init()
{
- ClearEntries();
- }
-
- virtual Version GetVersion()
- {
- return Version(2, 0, 0, 1, VF_VENDOR, API_VERSION);
- }
-
- void Implements(char* List)
- {
- List[I_OnRehash] = List[I_OnUserRegister] = List[I_OnStats] = 1;
+ ReadConf();
+ ServerInstance->Modules->AddService(nameExt);
+ ServerInstance->Modules->AddService(countExt);
+ Implementation eventlist[] = { I_OnRehash, I_OnSetUserIP, I_OnStats, I_OnSetConnectClass, I_OnCheckReady };
+ ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
}
- /** Clear entries and free the mem it was using
- */
- void ClearEntries()
+ Version GetVersion()
{
- std::vector<DNSBLConfEntry *>::iterator i;
- for (std::vector<DNSBLConfEntry *>::iterator i = DNSBLConfEntries.begin(); i != DNSBLConfEntries.end(); i++)
- delete *i;
- DNSBLConfEntries.clear();
+ return Version("Provides handling of DNS blacklists", VF_VENDOR);
}
/** Fill our conf vector with data
*/
- virtual void ReadConf()
+ void ReadConf()
{
- ConfigReader *MyConf = new ConfigReader(ServerInstance);
- ClearEntries();
+ DNSBLConfEntries.clear();
- for (int i=0; i< MyConf->Enumerate("dnsbl"); i++)
+ ConfigTagList dnsbls = ServerInstance->Config->ConfTags("dnsbl");
+ for(ConfigIter i = dnsbls.first; i != dnsbls.second; ++i)
{
- DNSBLConfEntry *e = new DNSBLConfEntry();
+ ConfigTag* tag = i->second;
+ reference<DNSBLConfEntry> e = new DNSBLConfEntry();
- e->name = MyConf->ReadValue("dnsbl", "name", i);
- e->reason = MyConf->ReadValue("dnsbl", "reason", i);
- e->domain = MyConf->ReadValue("dnsbl", "domain", i);
- e->banaction = str2banaction(MyConf->ReadValue("dnsbl", "action", i));
- e->duration = ServerInstance->Duration(MyConf->ReadValue("dnsbl", "duration", i).c_str());
- e->bitmask = MyConf->ReadInteger("dnsbl", "bitmask", i, false);
+ e->name = tag->getString("name");
+ e->ident = tag->getString("ident");
+ e->host = tag->getString("host");
+ e->reason = tag->getString("reason");
+ e->domain = tag->getString("domain");
+
+ if (tag->getString("type") == "bitmask")
+ {
+ e->type = DNSBLConfEntry::A_BITMASK;
+ e->bitmask = tag->getInt("bitmask");
+ }
+ else
+ {
+ memset(e->records, 0, sizeof(e->records));
+ e->type = DNSBLConfEntry::A_RECORD;
+ irc::portparser portrange(tag->getString("records"), false);
+ long item = -1;
+ while ((item = portrange.GetToken()))
+ e->records[item] = 1;
+ }
+
+ e->banaction = str2banaction(tag->getString("action"));
+ e->duration = ServerInstance->Duration(tag->getString("duration", "60"));
+
+ /* Use portparser for record replies */
/* yeah, logic here is a little messy */
- if (e->bitmask <= 0)
+ if ((e->bitmask <= 0) && (DNSBLConfEntry::A_BITMASK == e->type))
{
- ServerInstance->WriteOpers("*** DNSBL(#%d): invalid bitmask",i);
+ std::string location = tag->getTagLocation();
+ ServerInstance->SNO->WriteGlobalSno('a', "DNSBL(%s): invalid bitmask", location.c_str());
}
- else if (e->name == "")
+ else if (e->name.empty())
{
- ServerInstance->WriteOpers("*** DNSBL(#%d): Invalid name",i);
+ std::string location = tag->getTagLocation();
+ ServerInstance->SNO->WriteGlobalSno('a', "DNSBL(%s): Invalid name", location.c_str());
}
- else if (e->domain == "")
+ else if (e->domain.empty())
{
- ServerInstance->WriteOpers("*** DNSBL(#%d): Invalid domain",i);
+ std::string location = tag->getTagLocation();
+ ServerInstance->SNO->WriteGlobalSno('a', "DNSBL(%s): Invalid domain", location.c_str());
}
else if (e->banaction == DNSBLConfEntry::I_UNKNOWN)
{
- ServerInstance->WriteOpers("*** DNSBL(#%d): Invalid banaction", i);
+ std::string location = tag->getTagLocation();
+ ServerInstance->SNO->WriteGlobalSno('a', "DNSBL(%s): Invalid banaction", location.c_str());
+ }
+ else if (e->duration <= 0)
+ {
+ std::string location = tag->getTagLocation();
+ ServerInstance->SNO->WriteGlobalSno('a', "DNSBL(%s): Invalid duration", location.c_str());
}
else
{
- if (e->reason == "")
+ if (e->reason.empty())
{
- ServerInstance->WriteOpers("*** DNSBL(#%d): empty reason, using defaults",i);
+ std::string location = tag->getTagLocation();
+ ServerInstance->SNO->WriteGlobalSno('a', "DNSBL(%s): empty reason, using defaults", location.c_str());
e->reason = "Your IP has been blacklisted.";
}
/* add it, all is ok */
DNSBLConfEntries.push_back(e);
- continue;
}
-
- /* delete and drop it, error somewhere */
- delete e;
}
-
- delete MyConf;
}
- virtual void OnRehash(userrec* user, const std::string ¶meter)
+ void OnRehash(User* user)
{
ReadConf();
}
- virtual int OnUserRegister(userrec* user)
+ void OnSetUserIP(LocalUser* user)
{
- /* only do lookups on local users */
- if (IS_LOCAL(user))
+ if ((user->exempt) || (user->client_sa.sa.sa_family != AF_INET))
+ return;
+
+ if (user->MyClass)
{
- /* following code taken from bopm, reverses an IP address. */
- struct in_addr in;
- unsigned char a, b, c, d;
- char reversedipbuf[128];
- std::string reversedip;
- bool success = false;
-
- if (!inet_aton(user->GetIPString(), &in))
- {
-#ifdef IPV6
- /* We could have an ipv6 address here */
- std::string x = user->GetIPString();
- /* Is it a 4in6 address? (Compensate for this kernel kludge that people love) */
- if (x.find("0::ffff:") == 0)
- {
- x.erase(x.begin(), x.begin() + 8);
- if (inet_aton(x.c_str(), &in))
- success = true;
- }
-#endif
- }
- else
- {
- success = true;
- }
+ if (!user->MyClass->config->getBool("usednsbl", true))
+ return;
+ }
+ else
+ ServerInstance->Logs->Log("m_dnsbl", DEBUG, "User has no connect class in OnSetUserIP");
- if (!success)
- return 0;
+ unsigned char a, b, c, d;
+ char reversedipbuf[128];
+ std::string reversedip;
- d = (unsigned char) (in.s_addr >> 24) & 0xFF;
- c = (unsigned char) (in.s_addr >> 16) & 0xFF;
- b = (unsigned char) (in.s_addr >> 8) & 0xFF;
- a = (unsigned char) in.s_addr & 0xFF;
+ d = (unsigned char) (user->client_sa.in4.sin_addr.s_addr >> 24) & 0xFF;
+ c = (unsigned char) (user->client_sa.in4.sin_addr.s_addr >> 16) & 0xFF;
+ b = (unsigned char) (user->client_sa.in4.sin_addr.s_addr >> 8) & 0xFF;
+ a = (unsigned char) user->client_sa.in4.sin_addr.s_addr & 0xFF;
- snprintf(reversedipbuf, 128, "%d.%d.%d.%d", d, c, b, a);
- reversedip = std::string(reversedipbuf);
+ snprintf(reversedipbuf, 128, "%d.%d.%d.%d", d, c, b, a);
+ reversedip = std::string(reversedipbuf);
- // For each DNSBL, we will run through this lookup
- for (std::vector<DNSBLConfEntry *>::iterator i = DNSBLConfEntries.begin(); i != DNSBLConfEntries.end(); i++)
- {
- // Fill hostname with a dnsbl style host (d.c.b.a.domain.tld)
- std::string hostname = reversedip + "." + (*i)->domain;
+ countExt.set(user, DNSBLConfEntries.size());
- /* now we'd need to fire off lookups for `hostname'. */
- bool cached;
- DNSBLResolver *r = new DNSBLResolver(this, ServerInstance, hostname, user, user->GetFd(), *i, cached);
- ServerInstance->AddResolver(r, cached);
- }
+ // For each DNSBL, we will run through this lookup
+ unsigned int i = 0;
+ while (i < DNSBLConfEntries.size())
+ {
+ // Fill hostname with a dnsbl style host (d.c.b.a.domain.tld)
+ std::string hostname = reversedip + "." + DNSBLConfEntries[i]->domain;
+
+ /* now we'd need to fire off lookups for `hostname'. */
+ bool cached;
+ DNSBLResolver *r = new DNSBLResolver(this, nameExt, countExt, hostname, user, DNSBLConfEntries[i], cached);
+ ServerInstance->AddResolver(r, cached);
+ if (user->quitting)
+ break;
+ i++;
}
+ }
- /* don't do anything with this hot potato */
- return 0;
+ ModResult OnSetConnectClass(LocalUser* user, ConnectClass* myclass)
+ {
+ std::string dnsbl;
+ if (!myclass->config->readString("dnsbl", dnsbl))
+ return MOD_RES_PASSTHRU;
+ std::string* match = nameExt.get(user);
+ std::string myname = match ? *match : "";
+ if (dnsbl == myname)
+ return MOD_RES_PASSTHRU;
+ return MOD_RES_DENY;
}
- virtual int OnStats(char symbol, userrec* user, string_list &results)
+ ModResult OnCheckReady(LocalUser *user)
+ {
+ if (countExt.get(user))
+ return MOD_RES_DENY;
+ return MOD_RES_PASSTHRU;
+ }
+
+ ModResult OnStats(char symbol, User* user, string_list &results)
{
if (symbol != 'd')
- return 0;
-
+ return MOD_RES_PASSTHRU;
+
unsigned long total_hits = 0, total_misses = 0;
- for (std::vector<DNSBLConfEntry*>::iterator i = DNSBLConfEntries.begin(); i != DNSBLConfEntries.end(); i++)
+ for (std::vector<reference<DNSBLConfEntry> >::const_iterator i = DNSBLConfEntries.begin(); i != DNSBLConfEntries.end(); ++i)
{
total_hits += (*i)->stats_hits;
total_misses += (*i)->stats_misses;
-
- results.push_back(std::string(ServerInstance->Config->ServerName) + " 304 " + user->nick + " :DNSBLSTATS DNSbl \"" + (*i)->name + "\" had " +
+
+ results.push_back(ServerInstance->Config->ServerName + " 304 " + user->nick + " :DNSBLSTATS DNSbl \"" + (*i)->name + "\" had " +
ConvToStr((*i)->stats_hits) + " hits and " + ConvToStr((*i)->stats_misses) + " misses");
}
-
- results.push_back(std::string(ServerInstance->Config->ServerName) + " 304 " + user->nick + " :DNSBLSTATS Total hits: " + ConvToStr(total_hits));
- results.push_back(std::string(ServerInstance->Config->ServerName) + " 304 " + user->nick + " :DNSBLSTATS Total misses: " + ConvToStr(total_misses));
-
- return 0;
- }
-};
-// stuff down here is the module-factory stuff.
+ results.push_back(ServerInstance->Config->ServerName + " 304 " + user->nick + " :DNSBLSTATS Total hits: " + ConvToStr(total_hits));
+ results.push_back(ServerInstance->Config->ServerName + " 304 " + user->nick + " :DNSBLSTATS Total misses: " + ConvToStr(total_misses));
-class ModuleDNSBLFactory : public ModuleFactory
-{
- public:
- ModuleDNSBLFactory()
- {
+ return MOD_RES_PASSTHRU;
}
-
- ~ModuleDNSBLFactory()
- {
- }
-
- virtual Module *CreateModule(InspIRCd *Me)
- {
- return new ModuleDNSBL(Me);
- }
-
};
-
-extern "C" DllExport void * init_module( void )
-{
- return new ModuleDNSBLFactory;
-}
+MODULE_INIT(ModuleDNSBL)
projects / user / henk / code / inspircd.git / blobdiff