X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmodules%2Fm_sslinfo.cpp;h=ae3d2b7b63ce1cd3f467beafb91eadbfb517aabb;hb=HEAD;hp=d3514eac6acc4ccf1e254b517fbce2ad839e1578;hpb=fa6cfec3f8befcc650214b37664569e52f21e6b8;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/m_sslinfo.cpp b/src/modules/m_sslinfo.cpp index d3514eac6..ae3d2b7b6 100644 --- a/src/modules/m_sslinfo.cpp +++ b/src/modules/m_sslinfo.cpp @@ -1,7 +1,15 @@ /* * InspIRCd -- Internet Relay Chat Daemon * + * Copyright (C) 2020 Matt Schatz + * Copyright (C) 2019 linuxdaemon + * Copyright (C) 2013, 2017-2021 Sadie Powell + * Copyright (C) 2012-2016 Attila Molnar + * Copyright (C) 2012 Robby + * Copyright (C) 2010 Adam * Copyright (C) 2009-2010 Daniel De Graaf + * Copyright (C) 2007 Dennis Friis + * Copyright (C) 2006-2007, 2009-2010 Craig Edwards * * 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 @@ -21,6 +29,7 @@ #include "modules/ssl.h" #include "modules/webirc.h" #include "modules/whois.h" +#include "modules/who.h" enum { @@ -57,12 +66,12 @@ class SSLCertExt : public ExtensionItem free(container, unset_raw(container)); } - std::string serialize(SerializeFormat format, const Extensible* container, void* item) const CXX11_OVERRIDE + std::string ToNetwork(const Extensible* container, void* item) const CXX11_OVERRIDE { return static_cast(item)->GetMetaLine(); } - void unserialize(SerializeFormat format, Extensible* container, const std::string& value) CXX11_OVERRIDE + void FromNetwork(Extensible* container, const std::string& value) CXX11_OVERRIDE { ssl_cert* cert = new ssl_cert; set(container, cert); @@ -128,77 +137,153 @@ class UserCertificateAPIImpl : public UserCertificateAPIBase void SetCertificate(User* user, ssl_cert* cert) CXX11_OVERRIDE { - ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Setting SSL certificate for %s: %s", + ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Setting TLS (SSL) client certificate for %s: %s", user->GetFullHost().c_str(), cert->GetMetaLine().c_str()); sslext.set(user, cert); } }; -class CommandSSLInfo : public Command +class CommandSSLInfo : public SplitCommand { - public: - UserCertificateAPIImpl sslapi; + private: + ChanModeReference sslonlymode; - CommandSSLInfo(Module* Creator) - : Command(Creator, "SSLINFO", 1) - , sslapi(Creator) + void HandleUserInternal(LocalUser* source, User* target, bool verbose) { - this->syntax = ""; + ssl_cert* cert = sslapi.GetCertificate(target); + if (!cert) + { + source->WriteNotice(InspIRCd::Format("*** %s is not connected using TLS (SSL).", target->nick.c_str())); + } + else if (cert->GetError().length()) + { + source->WriteNotice(InspIRCd::Format("*** %s is connected using TLS (SSL) but has not specified a valid client certificate (%s).", + target->nick.c_str(), cert->GetError().c_str())); + } + else if (!verbose) + { + source->WriteNotice(InspIRCd::Format("*** %s is connected using TLS (SSL) with a valid client certificate (%s).", + target->nick.c_str(), cert->GetFingerprint().c_str())); + } + else + { + source->WriteNotice("*** Distinguished Name: " + cert->GetDN()); + source->WriteNotice("*** Issuer: " + cert->GetIssuer()); + source->WriteNotice("*** Key Fingerprint: " + cert->GetFingerprint()); + } } - CmdResult Handle(User* user, const Params& parameters) CXX11_OVERRIDE + CmdResult HandleUser(LocalUser* source, const std::string& nick) { - User* target = ServerInstance->FindNickOnly(parameters[0]); + User* target = ServerInstance->FindNickOnly(nick); + if (!target || target->registered != REG_ALL) + { + source->WriteNumeric(Numerics::NoSuchNick(nick)); + return CMD_FAILURE; + } - if ((!target) || (target->registered != REG_ALL)) + if (operonlyfp && !source->IsOper() && source != target) { - user->WriteNumeric(Numerics::NoSuchNick(parameters[0])); + source->WriteNumeric(ERR_NOPRIVILEGES, "You must be a server operator to view TLS (SSL) client certificate information for other users."); return CMD_FAILURE; } - bool operonlyfp = ServerInstance->Config->ConfValue("sslinfo")->getBool("operonly"); - if (operonlyfp && !user->IsOper() && target != user) + + HandleUserInternal(source, target, true); + return CMD_SUCCESS; + } + + CmdResult HandleChannel(LocalUser* source, const std::string& channel) + { + Channel* chan = ServerInstance->FindChan(channel); + if (!chan) { - user->WriteNotice("*** You cannot view SSL certificate information for other users"); + source->WriteNumeric(Numerics::NoSuchChannel(channel)); return CMD_FAILURE; } - ssl_cert* cert = sslapi.GetCertificate(target); - if (!cert) + + if (operonlyfp && !source->IsOper()) { - user->WriteNotice("*** No SSL certificate for this user"); + source->WriteNumeric(ERR_NOPRIVILEGES, "You must be a server operator to view TLS (SSL) client certificate information for channels."); + return CMD_FAILURE; } - else if (cert->GetError().length()) + + if (!source->IsOper() && chan->GetPrefixValue(source) < OP_VALUE) { - user->WriteNotice("*** No SSL certificate information for this user (" + cert->GetError() + ")."); + source->WriteNumeric(ERR_CHANOPRIVSNEEDED, chan->name, "You must be a channel operator."); + return CMD_FAILURE; } - else + + if (sslonlymode) { - user->WriteNotice("*** Distinguished Name: " + cert->GetDN()); - user->WriteNotice("*** Issuer: " + cert->GetIssuer()); - user->WriteNotice("*** Key Fingerprint: " + cert->GetFingerprint()); + source->WriteNotice(InspIRCd::Format("*** %s %s have channel mode +%c (%s) set.", + chan->name.c_str(), chan->IsModeSet(sslonlymode) ? "does" : "does not", + sslonlymode->GetModeChar(), sslonlymode->name.c_str())); } + + const Channel::MemberMap& userlist = chan->GetUsers(); + for (Channel::MemberMap::const_iterator i = userlist.begin(); i != userlist.end(); ++i) + { + if (!i->first->server->IsULine()) + HandleUserInternal(source, i->first, false); + } + return CMD_SUCCESS; } + + public: + UserCertificateAPIImpl sslapi; + bool operonlyfp; + + CommandSSLInfo(Module* Creator) + : SplitCommand(Creator, "SSLINFO", 1) + , sslonlymode(Creator, "sslonly") + , sslapi(Creator) + { + allow_empty_last_param = false; + syntax = ""; + } + + CmdResult HandleLocal(LocalUser* user, const Params& parameters) CXX11_OVERRIDE + { + if (ServerInstance->IsChannel(parameters[0])) + return HandleChannel(user, parameters[0]); + else + return HandleUser(user, parameters[0]); + } }; class ModuleSSLInfo : public Module , public WebIRC::EventListener , public Whois::EventListener + , public Who::EventListener { private: CommandSSLInfo cmd; + bool MatchFP(ssl_cert* const cert, const std::string& fp) const + { + return irc::spacesepstream(fp).Contains(cert->GetFingerprint()); + } + public: ModuleSSLInfo() : WebIRC::EventListener(this) , Whois::EventListener(this) + , Who::EventListener(this) , cmd(this) { } + void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE + { + ConfigTag* tag = ServerInstance->Config->ConfValue("sslinfo"); + cmd.operonlyfp = tag->getBool("operonly"); + } + Version GetVersion() CXX11_OVERRIDE { - return Version("SSL Certificate Utilities", VF_VENDOR); + return Version("Adds user facing TLS (SSL) information, various TLS (SSL) configuration options, and the /SSLINFO command to look up TLS (SSL) certificate information for other users.", VF_VENDOR); } void OnWhois(Whois::Context& whois) CXX11_OVERRIDE @@ -207,12 +292,24 @@ class ModuleSSLInfo if (cert) { whois.SendLine(RPL_WHOISSECURE, "is using a secure connection"); - bool operonlyfp = ServerInstance->Config->ConfValue("sslinfo")->getBool("operonly"); - if ((!operonlyfp || whois.IsSelfWhois() || whois.GetSource()->IsOper()) && !cert->fingerprint.empty()) - whois.SendLine(RPL_WHOISCERTFP, InspIRCd::Format("has client certificate fingerprint %s", cert->fingerprint.c_str())); + if ((!cmd.operonlyfp || whois.IsSelfWhois() || whois.GetSource()->IsOper()) && !cert->fingerprint.empty()) + whois.SendLine(RPL_WHOISCERTFP, InspIRCd::Format("has TLS (SSL) client certificate fingerprint %s", cert->fingerprint.c_str())); } } + ModResult OnWhoLine(const Who::Request& request, LocalUser* source, User* user, Membership* memb, Numeric::Numeric& numeric) CXX11_OVERRIDE + { + size_t flag_index; + if (!request.GetFieldIndex('f', flag_index)) + return MOD_RES_PASSTHRU; + + ssl_cert* cert = cmd.sslapi.GetCertificate(user); + if (cert) + numeric.GetParams()[flag_index].push_back('s'); + + return MOD_RES_PASSTHRU; + } + ModResult OnPreCommand(std::string& command, CommandBase::Params& parameters, LocalUser* user, bool validated) CXX11_OVERRIDE { if ((command == "OPER") && (validated)) @@ -225,16 +322,18 @@ class ModuleSSLInfo if (ifo->oper_block->getBool("sslonly") && !cert) { - user->WriteNumeric(ERR_NOOPERHOST, "This oper login requires an SSL connection."); + user->WriteNumeric(ERR_NOOPERHOST, "Invalid oper credentials"); user->CommandFloodPenalty += 10000; + ServerInstance->SNO->WriteGlobalSno('o', "WARNING! Failed oper attempt by %s using login '%s': a secure connection is required.", user->GetFullRealHost().c_str(), parameters[0].c_str()); return MOD_RES_DENY; } std::string fingerprint; - if (ifo->oper_block->readString("fingerprint", fingerprint) && (!cert || cert->GetFingerprint() != fingerprint)) + if (ifo->oper_block->readString("fingerprint", fingerprint) && (!cert || !MatchFP(cert, fingerprint))) { - user->WriteNumeric(ERR_NOOPERHOST, "This oper login requires a matching SSL certificate fingerprint."); + user->WriteNumeric(ERR_NOOPERHOST, "Invalid oper credentials"); user->CommandFloodPenalty += 10000; + ServerInstance->SNO->WriteGlobalSno('o', "WARNING! Failed oper attempt by %s using login '%s': their TLS (SSL) client certificate fingerprint does not match.", user->GetFullRealHost().c_str(), parameters[0].c_str()); return MOD_RES_DENY; } } @@ -256,47 +355,52 @@ class ModuleSSLInfo ssl_cert* const cert = ssliohook->GetCertificate(); - { - std::string text = "*** You are connected to "; - if (!ssliohook->GetServerName(text)) - text.append(ServerInstance->Config->ServerName); - text.append(" using SSL cipher '"); - ssliohook->GetCiphersuite(text); - text.push_back('\''); - if ((cert) && (!cert->GetFingerprint().empty())) - text.append(" and your SSL certificate fingerprint is ").append(cert->GetFingerprint()); - user->WriteNotice(text); - } + std::string text = "*** You are connected to "; + if (!ssliohook->GetServerName(text)) + text.append(ServerInstance->Config->GetServerName()); + text.append(" using TLS (SSL) cipher '"); + ssliohook->GetCiphersuite(text); + text.push_back('\''); + if (cert && !cert->GetFingerprint().empty()) + text.append(" and your TLS (SSL) client certificate fingerprint is ").append(cert->GetFingerprint()); + user->WriteNotice(text); if (!cert) return; - // find an auto-oper block for this user + + // Find an auto-oper block for this user for (ServerConfig::OperIndex::const_iterator i = ServerInstance->Config->oper_blocks.begin(); i != ServerInstance->Config->oper_blocks.end(); ++i) { OperInfo* ifo = i->second; std::string fp = ifo->oper_block->getString("fingerprint"); - if (fp == cert->fingerprint && ifo->oper_block->getBool("autologin")) + if (MatchFP(cert, fp) && ifo->oper_block->getBool("autologin")) user->Oper(ifo); } } ModResult OnSetConnectClass(LocalUser* user, ConnectClass* myclass) CXX11_OVERRIDE { - ssl_cert* cert = SSLClientCert::GetCertificate(&user->eh); - bool ok = true; - if (myclass->config->getString("requiressl") == "trusted") + ssl_cert* cert = cmd.sslapi.GetCertificate(user); + const char* error = NULL; + const std::string requiressl = myclass->config->getString("requiressl"); + if (stdalgo::string::equalsci(requiressl, "trusted")) { - ok = (cert && cert->IsCAVerified()); - ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Class requires a trusted SSL cert. Client %s one.", (ok ? "has" : "does not have")); + if (!cert || !cert->IsCAVerified()) + error = "a trusted TLS (SSL) client certificate"; } else if (myclass->config->getBool("requiressl")) { - ok = (cert != NULL); - ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "Class requires any SSL cert. Client %s one.", (ok ? "has" : "does not have")); + if (!cert) + error = "a TLS (SSL) connection"; } - if (!ok) + if (error) + { + ServerInstance->Logs->Log("CONNECTCLASS", LOG_DEBUG, "The %s connect class is not suitable as it requires %s", + myclass->GetName().c_str(), error); return MOD_RES_DENY; + } + return MOD_RES_PASSTHRU; }