X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_cloaking.cpp;h=a236300f18404bf623e7ad73a12b738862dd4530;hb=2630a87bb13b089e6d0fdcff4bcd0f3a9612e52f;hp=0583930d5dbfec86e554f6479f3b4d1730763d42;hpb=71f99fd5b1f41b0229284a8799b338515cdba529;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_cloaking.cpp b/src/modules/m_cloaking.cpp index 0583930d5..a236300f1 100644 --- a/src/modules/m_cloaking.cpp +++ b/src/modules/m_cloaking.cpp @@ -2,8 +2,8 @@ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * - * InspIRCd: (C) 2002-2008 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. @@ -32,74 +32,6 @@ class CloakUser : public ModeHandler Module* HashProvider; const char *xtab[4]; - void ApplyCloak(User *dest) - { - if (dest->host.find('.') != std::string::npos || dest->host.find(':') != std::string::npos) - { - unsigned int iv[] = { key1, key2, key3, key4 }; - std::string a = LastTwoDomainParts(dest->host); - std::string b; - - /* InspIRCd users have two hostnames; A displayed - * hostname which can be modified by modules (e.g. - * to create vhosts, implement chghost, etc) and a - * 'real' hostname which you shouldnt write to. - */ - - /* 2008/08/18: add which always cloaks - * the IP, for anonymity. --nenolod - */ - if (!ipalways) - { - /** Reset the Hash module, and send it our IV and hex table */ - HashResetRequest(Sender, HashProvider).Send(); - HashKeyRequest(Sender, HashProvider, iv).Send(); - HashHexRequest(Sender, HashProvider, xtab[(dest->host[0]) % 4]); - - /* Generate a cloak using specialized Hash */ - std::string hostcloak = prefix + "-" + std::string(HashSumRequest(Sender, HashProvider, dest->host.c_str()).Send()).substr(0,8) + a; - - /* Fix by brain - if the cloaked host is > the max length of a host (64 bytes - * according to the DNS RFC) then tough titty, they get cloaked as an IP. - * Their ISP shouldnt go to town on subdomains, or they shouldnt have a kiddie - * vhost. - */ -#ifdef IPV6 - in6_addr testaddr; - in_addr testaddr2; - if ((dest->GetProtocolFamily() == AF_INET6) && (inet_pton(AF_INET6,dest->host.c_str(),&testaddr) < 1) && (hostcloak.length() <= 64)) - /* Invalid ipv6 address, and ipv6 user (resolved host) */ - b = hostcloak; - else if ((dest->GetProtocolFamily() == AF_INET) && (inet_aton(dest->host.c_str(),&testaddr2) < 1) && (hostcloak.length() <= 64)) - /* Invalid ipv4 address, and ipv4 user (resolved host) */ - b = hostcloak; - else - /* Valid ipv6 or ipv4 address (not resolved) ipv4 or ipv6 user */ - b = ((!strchr(dest->host.c_str(),':')) ? Cloak4(dest->host.c_str()) : Cloak6(dest->host.c_str())); -#else - in_addr testaddr; - if ((inet_aton(dest->host.c_str(),&testaddr) < 1) && (hostcloak.length() <= 64)) - /* Invalid ipv4 address, and ipv4 user (resolved host) */ - b = hostcloak; - else - /* Valid ipv4 address (not resolved) ipv4 user */ - b = Cloak4(dest->host.c_str()); -#endif - } - else - { -#ifdef IPV6 - if (dest->GetProtocolFamily() == AF_INET6) - b = Cloak6(dest->GetIPString()); -#endif - if (dest->GetProtocolFamily() == AF_INET) - b = Cloak4(dest->GetIPString()); - } - - dest->Extend("cloaked_host", new std::string(b)); - } - } - /** This function takes a domain name string and returns just the last two domain parts, * or the last domain part if only two are available. Failing that it just returns what it was given. * @@ -137,9 +69,6 @@ class CloakUser : public ModeHandler ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding, bool) { - if (source != dest) - return MODEACTION_DENY; - /* For remote clients, we dont take any action, we just allow it. * The local server where they are will set their cloak instead. * This is fine, as we will recieve it later. @@ -170,15 +99,15 @@ class CloakUser : public ModeHandler if (!dest->GetExt("cloaked_host", cloak)) { - /* Cloaked host has not been calculated previously */ - this->ApplyCloak(dest); - if (!dest->GetExt("cloaked_host", cloak)) - throw "ack, can't cloak!"; + /* Force creation of missing cloak */ + Sender->OnUserConnect(dest); + } + if (dest->GetExt("cloaked_host", cloak)) + { + dest->ChangeDisplayedHost(cloak->c_str()); + dest->SetMode('x',true); + return MODEACTION_ALLOW; } - - dest->ChangeDisplayedHost(cloak->c_str()); - dest->SetMode('x',true); - return MODEACTION_ALLOW; } } else @@ -231,11 +160,6 @@ class CloakUser : public ModeHandler std::string Cloak6(const char* ip) { - /* Theyre using 4in6 (YUCK). Translate as ipv4 cloak */ - if (!strncmp(ip, "0::ffff:", 8)) - return Cloak4(ip + 8); - - /* If we get here, yes it really is an ipv6 ip */ unsigned int iv[] = { key1, key2, key3, key4 }; std::vector hashies; std::string item; @@ -326,16 +250,14 @@ class CloakUser : public ModeHandler class ModuleCloaking : public Module { private: - CloakUser* cu; - Module* HashModule; public: ModuleCloaking(InspIRCd* Me) : Module(Me) { /* Attempt to locate the md5 service provider, bail if we can't find it */ - HashModule = ServerInstance->Modules->Find("m_md5.so"); + Module* HashModule = ServerInstance->Modules->Find("m_md5.so"); if (!HashModule) throw ModuleException("Can't find m_md5.so. Please load m_md5.so before m_cloaking.so."); @@ -343,7 +265,7 @@ class ModuleCloaking : public Module try { - OnRehash(NULL,""); + OnRehash(NULL); } catch (ModuleException &e) { @@ -360,8 +282,10 @@ class ModuleCloaking : public Module ServerInstance->Modules->UseInterface("HashRequest"); - Implementation eventlist[] = { I_OnRehash, I_OnUserDisconnect, I_OnCleanup, I_OnCheckBan, I_OnUserConnect, I_OnSyncUserMetaData }; + Implementation eventlist[] = { I_OnRehash, I_OnUserDisconnect, I_OnCleanup, I_OnCheckBan, I_OnUserConnect, I_OnSyncUserMetaData, I_OnCleanup }; ServerInstance->Modules->Attach(eventlist, this, 6); + + CloakExistingUsers(); } void OnSyncUserMetaData(User* user, Module* proto,void* opaque, const std::string &extname, bool displayable) @@ -374,6 +298,17 @@ class ModuleCloaking : public Module } } + void CloakExistingUsers() + { + std::string* cloak; + for (std::vector::iterator u = ServerInstance->Users->local_users.begin(); u != ServerInstance->Users->local_users.end(); u++) + { + if (!(*u)->GetExt("cloaked_host", cloak)) + { + OnUserConnect(*u); + } + } + } virtual int OnCheckBan(User* user, Channel* chan) { @@ -395,14 +330,21 @@ class ModuleCloaking : public Module void Prioritize() { /* Needs to be after m_banexception etc. */ - ServerInstance->Modules->SetPriority(this, I_OnCheckBan, PRIO_LAST); + ServerInstance->Modules->SetPriority(this, I_OnCheckBan, PRIORITY_LAST); + + /* but before m_conn_umodes, so host is generated ready to apply */ + Module *um = ServerInstance->Modules->Find("m_conn_umodes.so"); + ServerInstance->Modules->SetPriority(this, I_OnUserConnect, PRIORITY_AFTER, &um); } virtual void OnUserDisconnect(User* user) { std::string* tofree; if (user->GetExt("cloaked_host", tofree)) + { delete tofree; + user->Shrink("cloaked_host"); + } } virtual void OnCleanup(int target_type, void* item) @@ -425,11 +367,69 @@ class ModuleCloaking : public Module return Version("$Id$", VF_COMMON|VF_VENDOR,API_VERSION); } - virtual void OnRehash(User* user, const std::string ¶meter) + virtual void OnRehash(User* user) { cu->DoRehash(); } + virtual void OnUserConnect(User* dest) + { + std::string* tofree; + if (dest->GetExt("cloaked_host", tofree)) + return; + + if (dest->host.find('.') != std::string::npos || dest->host.find(':') != std::string::npos) + { + unsigned int iv[] = { cu->key1, cu->key2, cu->key3, cu->key4 }; + std::string a = cu->LastTwoDomainParts(dest->host); + std::string b; + + /* InspIRCd users have two hostnames; A displayed + * hostname which can be modified by modules (e.g. + * to create vhosts, implement chghost, etc) and a + * 'real' hostname which you shouldnt write to. + */ + + /* 2008/08/18: add which always cloaks + * the IP, for anonymity. --nenolod + */ + if (!cu->ipalways) + { + /** Reset the Hash module, and send it our IV and hex table */ + HashResetRequest(this, cu->HashProvider).Send(); + HashKeyRequest(this, cu->HashProvider, iv).Send(); + HashHexRequest(this, cu->HashProvider, cu->xtab[(dest->host[0]) % 4]); + + /* Generate a cloak using specialized Hash */ + std::string hostcloak = cu->prefix + "-" + std::string(HashSumRequest(this, cu->HashProvider, dest->host.c_str()).Send()).substr(0,8) + a; + + /* Fix by brain - if the cloaked host is > the max length of a host (64 bytes + * according to the DNS RFC) then tough titty, they get cloaked as an IP. + * Their ISP shouldnt go to town on subdomains, or they shouldnt have a kiddie + * vhost. + */ + std::string testaddr; + int testport; + if (!irc::sockets::satoap(&dest->client_sa, testaddr, testport) && (hostcloak.length() <= 64)) + /* not a valid address, must have been a host, so cloak as a host */ + b = hostcloak; + else if (dest->client_sa.sa.sa_family == AF_INET6) + b = cu->Cloak6(dest->GetIPString()); + else + b = cu->Cloak4(dest->GetIPString()); + } + else + { + if (dest->client_sa.sa.sa_family == AF_INET6) + b = cu->Cloak6(dest->GetIPString()); + else + b = cu->Cloak4(dest->GetIPString()); + } + + dest->Extend("cloaked_host", new std::string(b)); + } + } + }; MODULE_INIT(ModuleCloaking)