X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_dnsbl.cpp;h=cb32ede78e6cd950266f6a1ed69db5b562a37f6f;hb=6d03943426dcce76ba66567a9b18425a5ebb4c0c;hp=fc85e9cc7ba45c39de296d9b589e5d250bcc2251;hpb=206e3b49c7bfe3e8a7ca972103fe9e30feb3a86a;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_dnsbl.cpp b/src/modules/m_dnsbl.cpp index fc85e9cc7..cb32ede78 100644 --- a/src/modules/m_dnsbl.cpp +++ b/src/modules/m_dnsbl.cpp @@ -2,8 +2,8 @@ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * - * InspIRCd: (C) 2002-2007 InspIRCd Development Team - * See: http://www.inspircd.org/wiki/index.php/Credits + * InspIRCd: (C) 2002-2009 InspIRCd Development Team + * See: http://wiki.inspircd.org/Credits * * This program is free but copyrighted software; see * the file COPYING for details. @@ -13,32 +13,30 @@ #include "inspircd.h" #include "xline.h" -#include "dns.h" -#include "users.h" -#include "channels.h" -#include "modules.h" #ifndef WINDOWS #include #include #include #include -#include #endif /* $ModDesc: Provides handling of DNS blacklists */ /* Class holding data for a single entry */ -class DNSBLConfEntry +class DNSBLConfEntry : public classbase { 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() { } }; @@ -48,19 +46,20 @@ class DNSBLConfEntry class DNSBLResolver : public Resolver { int theirfd; - userrec* them; + User* them; 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, const std::string &hostname, User* u, int userfd, DNSBLConfEntry *conf, bool &cached) + : Resolver(hostname, DNS_QUERY_A, cached, me) { 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 */ @@ -69,20 +68,26 @@ class DNSBLResolver : public Resolver // 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%"); @@ -99,27 +104,65 @@ class DNSBLResolver : public Resolver { case DNSBLConfEntry::I_KILL: { - userrec::QuitUser(ServerInstance, them, std::string("Killed (") + reason + ")"); + ServerInstance->Users->QuitUser(them, std::string("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()); + } + break; } case DNSBLConfEntry::I_KLINE: { - std::string ban = std::string("*@") + them->GetIPString(); - 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, reason.c_str(), + "*", them->GetIPString()); + if (ServerInstance->XLines->AddLine(kl,NULL)) + { + ServerInstance->SNO->WriteGlobalSno('x',"K:line added due to DNSBL match on *@%s to expire on %s: %s", + them->GetIPString(), ServerInstance->TimeString(kl->expiry).c_str(), reason.c_str()); + ServerInstance->XLines->ApplyLines(); + } + else + delete kl; 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()); - FOREACH_MOD(I_OnAddGLine,OnAddGLine(ConfEntry->duration, NULL, reason, ban)); + GLine* gl = new GLine(ServerInstance->Time(), ConfEntry->duration, ServerInstance->Config->ServerName, reason.c_str(), + "*", them->GetIPString()); + if (ServerInstance->XLines->AddLine(gl,NULL)) + { + ServerInstance->SNO->WriteGlobalSno('x',"G:line added due to DNSBL match on *@%s to expire on %s: %s", + them->GetIPString(), ServerInstance->TimeString(gl->expiry).c_str(), reason.c_str()); + ServerInstance->XLines->ApplyLines(); + } + else + delete gl; break; } case DNSBLConfEntry::I_ZLINE: { - show = ServerInstance->XLines->add_zline(ConfEntry->duration, ServerInstance->Config->ServerName, reason.c_str(), them->GetIPString()); - FOREACH_MOD(I_OnAddZLine,OnAddZLine(ConfEntry->duration, NULL, reason, them->GetIPString())); + ZLine* zl = new ZLine(ServerInstance->Time(), ConfEntry->duration, ServerInstance->Config->ServerName, reason.c_str(), + them->GetIPString()); + if (ServerInstance->XLines->AddLine(zl,NULL)) + { + ServerInstance->SNO->WriteGlobalSno('x',"Z:line added due to DNSBL match on *@%s to expire on %s: %s", + them->GetIPString(), ServerInstance->TimeString(zl->expiry).c_str(), reason.c_str()); + ServerInstance->XLines->ApplyLines(); + } + else + delete zl; break; } case DNSBLConfEntry::I_UNKNOWN: @@ -129,8 +172,7 @@ class DNSBLResolver : public Resolver 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 detected as being on a DNS blacklist (%s) with result %d", them->GetFullRealHost().c_str(), ConfEntry->domain.c_str(), (ConfEntry->type==DNSBLConfEntry::A_BITMASK) ? bitmask : record); } else ConfEntry->stats_misses++; @@ -167,13 +209,16 @@ class ModuleDNSBL : public Module 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) - { + ModuleDNSBL() { ReadConf(); + Implementation eventlist[] = { I_OnRehash, I_OnUserRegister, I_OnStats }; + ServerInstance->Modules->Attach(eventlist, this, 3); } virtual ~ModuleDNSBL() @@ -183,19 +228,14 @@ class ModuleDNSBL : public Module virtual Version GetVersion() { - return Version(2, 0, 0, 1, VF_VENDOR, API_VERSION); + return Version("Provides handling of DNS blacklists", VF_VENDOR, API_VERSION); } - void Implements(char* List) - { - List[I_OnRehash] = List[I_OnUserRegister] = List[I_OnStats] = 1; - } /** Clear entries and free the mem it was using */ void ClearEntries() { - std::vector::iterator i; for (std::vector::iterator i = DNSBLConfEntries.begin(); i != DNSBLConfEntries.end(); i++) delete *i; DNSBLConfEntries.clear(); @@ -205,7 +245,7 @@ class ModuleDNSBL : public Module */ virtual void ReadConf() { - ConfigReader *MyConf = new ConfigReader(ServerInstance); + ConfigReader *MyConf = new ConfigReader; ClearEntries(); for (int i=0; i< MyConf->Enumerate("dnsbl"); i++) @@ -213,34 +253,57 @@ class ModuleDNSBL : public Module DNSBLConfEntry *e = new DNSBLConfEntry(); e->name = MyConf->ReadValue("dnsbl", "name", i); + e->ident = MyConf->ReadValue("dnsbl", "ident", i); + e->host = MyConf->ReadValue("dnsbl", "host", i); e->reason = MyConf->ReadValue("dnsbl", "reason", i); e->domain = MyConf->ReadValue("dnsbl", "domain", i); + + if (MyConf->ReadValue("dnsbl", "type", i) == "bitmask") + { + e->type = DNSBLConfEntry::A_BITMASK; + e->bitmask = MyConf->ReadInteger("dnsbl", "bitmask", i, false); + } + else + { + memset(e->records, 0, sizeof(e->records)); + e->type = DNSBLConfEntry::A_RECORD; + irc::portparser portrange(MyConf->ReadValue("dnsbl", "records", i), false); + long item = -1; + while ((item = portrange.GetToken())) + e->records[item] = 1; + } + 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->duration = ServerInstance->Duration(MyConf->ReadValue("dnsbl", "duration", "60", i)); + + /* 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); + ServerInstance->SNO->WriteGlobalSno('a', "DNSBL(#%d): invalid bitmask",i); } - else if (e->name == "") + else if (e->name.empty()) { - ServerInstance->WriteOpers("*** DNSBL(#%d): Invalid name",i); + ServerInstance->SNO->WriteGlobalSno('a', "DNSBL(#%d): Invalid name",i); } - else if (e->domain == "") + else if (e->domain.empty()) { - ServerInstance->WriteOpers("*** DNSBL(#%d): Invalid domain",i); + ServerInstance->SNO->WriteGlobalSno('a', "DNSBL(#%d): Invalid domain",i); } else if (e->banaction == DNSBLConfEntry::I_UNKNOWN) { - ServerInstance->WriteOpers("*** DNSBL(#%d): Invalid banaction", i); + ServerInstance->SNO->WriteGlobalSno('a', "DNSBL(#%d): Invalid banaction", i); + } + else if (e->duration <= 0) + { + ServerInstance->SNO->WriteGlobalSno('a', "DNSBL(#%d): Invalid duration", i); } else { - if (e->reason == "") + if (e->reason.empty()) { - ServerInstance->WriteOpers("*** DNSBL(#%d): empty reason, using defaults",i); + ServerInstance->SNO->WriteGlobalSno('a', "DNSBL(#%d): empty reason, using defaults",i); e->reason = "Your IP has been blacklisted."; } @@ -256,12 +319,12 @@ class ModuleDNSBL : public Module delete MyConf; } - virtual void OnRehash(userrec* user, const std::string ¶meter) + virtual void OnRehash(User* user) { ReadConf(); } - virtual int OnUserRegister(userrec* user) + virtual ModResult OnUserRegister(User* user) { /* only do lookups on local users */ if (IS_LOCAL(user)) @@ -271,29 +334,12 @@ class ModuleDNSBL : public Module unsigned char a, b, c, d; char reversedipbuf[128]; std::string reversedip; - bool success = false; + bool success; - 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; - } + success = inet_aton(user->GetIPString(), &in); if (!success) - return 0; + return MOD_RES_PASSTHRU; d = (unsigned char) (in.s_addr >> 24) & 0xFF; c = (unsigned char) (in.s_addr >> 16) & 0xFF; @@ -311,60 +357,36 @@ class ModuleDNSBL : public Module /* now we'd need to fire off lookups for `hostname'. */ bool cached; - DNSBLResolver *r = new DNSBLResolver(this, ServerInstance, hostname, user, user->GetFd(), *i, cached); + DNSBLResolver *r = new DNSBLResolver(this, hostname, user, user->GetFd(), *i, cached); ServerInstance->AddResolver(r, cached); } } /* don't do anything with this hot potato */ - return 0; + return MOD_RES_PASSTHRU; } - - virtual int OnStats(char symbol, userrec* user, string_list &results) + + virtual 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::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 " + 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. -class ModuleDNSBLFactory : public ModuleFactory -{ - public: - ModuleDNSBLFactory() - { - } - - ~ModuleDNSBLFactory() - { + return MOD_RES_PASSTHRU; } - - virtual Module *CreateModule(InspIRCd *Me) - { - return new ModuleDNSBL(Me); - } - }; - -extern "C" DllExport void * init_module( void ) -{ - return new ModuleDNSBLFactory; -} +MODULE_INIT(ModuleDNSBL)