X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fmodules%2Fextra%2Fm_ssl_openssl.cpp;h=0c9307ae4e8e525b66adde5e3f187f695180eaab;hb=6e8677f9254d00541f8e37e88af3adab14638b11;hp=43dc43aeabc188274f99c3f5452bc1f136f45b58;hpb=bab14f0dd2345c9d7dcbc47c918563709e1ac094;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/modules/extra/m_ssl_openssl.cpp b/src/modules/extra/m_ssl_openssl.cpp index 43dc43aea..0c9307ae4 100644 --- a/src/modules/extra/m_ssl_openssl.cpp +++ b/src/modules/extra/m_ssl_openssl.cpp @@ -1 +1,915 @@ -/* +------------------------------------+ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * * InspIRCd: (C) 2002-2007 InspIRCd Development Team * See: http://www.inspircd.org/wiki/index.php/Credits * * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ #include "inspircd.h" #include #include #ifdef WINDOWS #include #endif #include "configreader.h" #include "users.h" #include "channels.h" #include "modules.h" #include "socket.h" #include "hashcomp.h" #include "transport.h" #ifdef WINDOWS #pragma comment(lib, "libeay32MTd") #pragma comment(lib, "ssleay32MTd") #undef MAX_DESCRIPTORS #define MAX_DESCRIPTORS 10000 #endif /* $ModDesc: Provides SSL support for clients */ /* $CompileFlags: pkgconfversion("openssl","0.9.7") pkgconfincludes("openssl","/openssl/ssl.h","") */ /* $LinkerFlags: rpath("pkg-config --libs openssl") pkgconflibs("openssl","/libssl.so","-lssl -lcrypto -ldl") */ /* $ModDep: transport.h */ enum issl_status { ISSL_NONE, ISSL_HANDSHAKING, ISSL_OPEN }; enum issl_io_status { ISSL_WRITE, ISSL_READ }; static bool SelfSigned = false; bool isin(int port, const std::vector &portlist) { for(unsigned int i = 0; i < portlist.size(); i++) if(portlist[i] == port) return true; return false; } char* get_error() { return ERR_error_string(ERR_get_error(), NULL); } static int error_callback(const char *str, size_t len, void *u); /** Represents an SSL user's extra data */ class issl_session : public classbase { public: SSL* sess; issl_status status; issl_io_status rstat; issl_io_status wstat; unsigned int inbufoffset; char* inbuf; // Buffer OpenSSL reads into. std::string outbuf; // Buffer for outgoing data that OpenSSL will not take. int fd; bool outbound; issl_session() { outbound = false; rstat = ISSL_READ; wstat = ISSL_WRITE; } }; static int OnVerify(int preverify_ok, X509_STORE_CTX *ctx) { /* XXX: This will allow self signed certificates. * In the future if we want an option to not allow this, * we can just return preverify_ok here, and openssl * will boot off self-signed and invalid peer certs. */ int ve = X509_STORE_CTX_get_error(ctx); SelfSigned = (ve == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT); return 1; } class ModuleSSLOpenSSL : public Module { ConfigReader* Conf; std::vector listenports; int inbufsize; issl_session sessions[MAX_DESCRIPTORS]; SSL_CTX* ctx; SSL_CTX* clictx; char* dummy; char cipher[MAXBUF]; std::string keyfile; std::string certfile; std::string cafile; // std::string crlfile; std::string dhfile; std::string sslports; int clientactive; public: InspIRCd* PublicInstance; ModuleSSLOpenSSL(InspIRCd* Me) : Module(Me), PublicInstance(Me) { ServerInstance->PublishInterface("InspSocketHook", this); // Not rehashable...because I cba to reduce all the sizes of existing buffers. inbufsize = ServerInstance->Config->NetBufferSize; /* Global SSL library initialization*/ SSL_library_init(); SSL_load_error_strings(); /* Build our SSL contexts: * NOTE: OpenSSL makes us have two contexts, one for servers and one for clients. ICK. */ ctx = SSL_CTX_new( SSLv23_server_method() ); clictx = SSL_CTX_new( SSLv23_client_method() ); SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, OnVerify); SSL_CTX_set_verify(clictx, SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, OnVerify); // Needs the flag as it ignores a plain /rehash OnRehash(NULL,"ssl"); } virtual void OnRehash(userrec* user, const std::string ¶m) { if (param != "ssl") return; Conf = new ConfigReader(ServerInstance); for (unsigned int i = 0; i < listenports.size(); i++) { ServerInstance->Config->DelIOHook(listenports[i]); } listenports.clear(); clientactive = 0; sslports.clear(); for (int i = 0; i < Conf->Enumerate("bind"); i++) { // For each tag std::string x = Conf->ReadValue("bind", "type", i); if (((x.empty()) || (x == "clients")) && (Conf->ReadValue("bind", "ssl", i) == "openssl")) { // Get the port we're meant to be listening on with SSL std::string port = Conf->ReadValue("bind", "port", i); irc::portparser portrange(port, false); long portno = -1; while ((portno = portrange.GetToken())) { clientactive++; try { if (ServerInstance->Config->AddIOHook(portno, this)) { listenports.push_back(portno); for (size_t i = 0; i < ServerInstance->Config->ports.size(); i++) if (ServerInstance->Config->ports[i]->GetPort() == portno) ServerInstance->Config->ports[i]->SetDescription("ssl"); ServerInstance->Log(DEFAULT, "m_ssl_openssl.so: Enabling SSL for port %d", portno); sslports.append("*:").append(ConvToStr(portno)).append(";"); } else { ServerInstance->Log(DEFAULT, "m_ssl_openssl.so: FAILED to enable SSL on port %d, maybe you have another ssl or similar module loaded?", portno); } } catch (ModuleException &e) { ServerInstance->Log(DEFAULT, "m_ssl_openssl.so: FAILED to enable SSL on port %d: %s. Maybe it's already hooked by the same port on a different IP, or you have another SSL or similar module loaded?", portno, e.GetReason()); } } } } if (!sslports.empty()) sslports.erase(sslports.end() - 1); std::string confdir(ServerInstance->ConfigFileName); // +1 so we the path ends with a / confdir = confdir.substr(0, confdir.find_last_of('/') + 1); cafile = Conf->ReadValue("openssl", "cafile", 0); certfile = Conf->ReadValue("openssl", "certfile", 0); keyfile = Conf->ReadValue("openssl", "keyfile", 0); dhfile = Conf->ReadValue("openssl", "dhfile", 0); // Set all the default values needed. if (cafile.empty()) cafile = "ca.pem"; if (certfile.empty()) certfile = "cert.pem"; if (keyfile.empty()) keyfile = "key.pem"; if (dhfile.empty()) dhfile = "dhparams.pem"; // Prepend relative paths with the path to the config directory. if (cafile[0] != '/') cafile = confdir + cafile; if (certfile[0] != '/') certfile = confdir + certfile; if (keyfile[0] != '/') keyfile = confdir + keyfile; if (dhfile[0] != '/') dhfile = confdir + dhfile; /* Load our keys and certificates * NOTE: OpenSSL's error logging API sucks, don't blame us for this clusterfuck. */ if ((!SSL_CTX_use_certificate_chain_file(ctx, certfile.c_str())) || (!SSL_CTX_use_certificate_chain_file(clictx, certfile.c_str()))) { ServerInstance->Log(DEFAULT, "m_ssl_openssl.so: Can't read certificate file %s. %s", certfile.c_str(), strerror(errno)); ERR_print_errors_cb(error_callback, this); } if (((!SSL_CTX_use_PrivateKey_file(ctx, keyfile.c_str(), SSL_FILETYPE_PEM))) || (!SSL_CTX_use_PrivateKey_file(clictx, keyfile.c_str(), SSL_FILETYPE_PEM))) { ServerInstance->Log(DEFAULT, "m_ssl_openssl.so: Can't read key file %s. %s", keyfile.c_str(), strerror(errno)); ERR_print_errors_cb(error_callback, this); } /* Load the CAs we trust*/ if (((!SSL_CTX_load_verify_locations(ctx, cafile.c_str(), 0))) || (!SSL_CTX_load_verify_locations(clictx, cafile.c_str(), 0))) { ServerInstance->Log(DEFAULT, "m_ssl_openssl.so: Can't read CA list from %s. %s", cafile.c_str(), strerror(errno)); ERR_print_errors_cb(error_callback, this); } FILE* dhpfile = fopen(dhfile.c_str(), "r"); DH* ret; if (dhpfile == NULL) { ServerInstance->Log(DEFAULT, "m_ssl_openssl.so Couldn't open DH file %s: %s", dhfile.c_str(), strerror(errno)); throw ModuleException("Couldn't open DH file " + dhfile + ": " + strerror(errno)); } else { ret = PEM_read_DHparams(dhpfile, NULL, NULL, NULL); if ((SSL_CTX_set_tmp_dh(ctx, ret) < 0) || (SSL_CTX_set_tmp_dh(clictx, ret) < 0)) { ServerInstance->Log(DEFAULT, "m_ssl_openssl.so: Couldn't set DH parameters %s. SSL errors follow:", dhfile.c_str()); ERR_print_errors_cb(error_callback, this); } } fclose(dhpfile); DELETE(Conf); } virtual void On005Numeric(std::string &output) { output.append(" SSL=" + sslports); } virtual ~ModuleSSLOpenSSL() { SSL_CTX_free(ctx); SSL_CTX_free(clictx); } virtual void OnCleanup(int target_type, void* item) { if (target_type == TYPE_USER) { userrec* user = (userrec*)item; if (user->GetExt("ssl", dummy) && IS_LOCAL(user) && isin(user->GetPort(), listenports)) { // User is using SSL, they're a local user, and they're using one of *our* SSL ports. // Potentially there could be multiple SSL modules loaded at once on different ports. ServerInstance->GlobalCulls.AddItem(user, "SSL module unloading"); } if (user->GetExt("ssl_cert", dummy) && isin(user->GetPort(), listenports)) { ssl_cert* tofree; user->GetExt("ssl_cert", tofree); delete tofree; user->Shrink("ssl_cert"); } } } virtual void OnUnloadModule(Module* mod, const std::string &name) { if (mod == this) { for(unsigned int i = 0; i < listenports.size(); i++) { ServerInstance->Config->DelIOHook(listenports[i]); for (size_t j = 0; j < ServerInstance->Config->ports.size(); j++) if (ServerInstance->Config->ports[j]->GetPort() == listenports[i]) ServerInstance->Config->ports[j]->SetDescription("plaintext"); } } } virtual Version GetVersion() { return Version(1, 1, 0, 0, VF_VENDOR, API_VERSION); } void Implements(char* List) { List[I_OnRawSocketConnect] = List[I_OnRawSocketAccept] = List[I_OnRawSocketClose] = List[I_OnRawSocketRead] = List[I_OnRawSocketWrite] = List[I_OnCleanup] = List[I_On005Numeric] = 1; List[I_OnRequest] = List[I_OnSyncUserMetaData] = List[I_OnDecodeMetaData] = List[I_OnUnloadModule] = List[I_OnRehash] = List[I_OnWhois] = List[I_OnPostConnect] = 1; } virtual char* OnRequest(Request* request) { ISHRequest* ISR = (ISHRequest*)request; if (strcmp("IS_NAME", request->GetId()) == 0) { return "openssl"; } else if (strcmp("IS_HOOK", request->GetId()) == 0) { char* ret = "OK"; try { ret = ServerInstance->Config->AddIOHook((Module*)this, (InspSocket*)ISR->Sock) ? (char*)"OK" : NULL; } catch (ModuleException &e) { return NULL; } return ret; } else if (strcmp("IS_UNHOOK", request->GetId()) == 0) { return ServerInstance->Config->DelIOHook((InspSocket*)ISR->Sock) ? (char*)"OK" : NULL; } else if (strcmp("IS_HSDONE", request->GetId()) == 0) { ServerInstance->Log(DEBUG,"Module checking if handshake is done"); if (ISR->Sock->GetFd() < 0) return (char*)"OK"; issl_session* session = &sessions[ISR->Sock->GetFd()]; return (session->status == ISSL_HANDSHAKING) ? NULL : (char*)"OK"; } else if (strcmp("IS_ATTACH", request->GetId()) == 0) { issl_session* session = &sessions[ISR->Sock->GetFd()]; if (session->sess) { VerifyCertificate(session, (InspSocket*)ISR->Sock); return "OK"; } } return NULL; } virtual void OnRawSocketAccept(int fd, const std::string &ip, int localport) { issl_session* session = &sessions[fd]; session->fd = fd; session->inbuf = new char[inbufsize]; session->inbufoffset = 0; session->sess = SSL_new(ctx); session->status = ISSL_NONE; session->outbound = false; if (session->sess == NULL) return; if (SSL_set_fd(session->sess, fd) == 0) { ServerInstance->Log(DEBUG,"BUG: Can't set fd with SSL_set_fd: %d", fd); return; } Handshake(session); } virtual void OnRawSocketConnect(int fd) { ServerInstance->Log(DEBUG,"OnRawSocketConnect connecting"); issl_session* session = &sessions[fd]; session->fd = fd; session->inbuf = new char[inbufsize]; session->inbufoffset = 0; session->sess = SSL_new(clictx); session->status = ISSL_NONE; session->outbound = true; if (session->sess == NULL) return; if (SSL_set_fd(session->sess, fd) == 0) { ServerInstance->Log(DEBUG,"BUG: Can't set fd with SSL_set_fd: %d", fd); return; } Handshake(session); ServerInstance->Log(DEBUG,"Exiting OnRawSocketConnect"); } virtual void OnRawSocketClose(int fd) { CloseSession(&sessions[fd]); EventHandler* user = ServerInstance->SE->GetRef(fd); if ((user) && (user->GetExt("ssl_cert", dummy))) { ssl_cert* tofree; user->GetExt("ssl_cert", tofree); delete tofree; user->Shrink("ssl_cert"); } } virtual int OnRawSocketRead(int fd, char* buffer, unsigned int count, int &readresult) { issl_session* session = &sessions[fd]; ServerInstance->Log(DEBUG,"OnRawSocketRead"); if (!session->sess) { ServerInstance->Log(DEBUG,"OnRawSocketRead has no session"); readresult = 0; CloseSession(session); return 1; } if (session->status == ISSL_HANDSHAKING) { if (session->rstat == ISSL_READ || session->wstat == ISSL_READ) { ServerInstance->Log(DEBUG,"Resume handshake in read"); // The handshake isn't finished and it wants to read, try to finish it. if (!Handshake(session)) { ServerInstance->Log(DEBUG,"Cant resume handshake in read"); // Couldn't resume handshake. return -1; } } else { errno = EAGAIN; return -1; } } // If we resumed the handshake then session->status will be ISSL_OPEN if (session->status == ISSL_OPEN) { if (session->wstat == ISSL_READ) { if(DoWrite(session) == 0) return 0; } if (session->rstat == ISSL_READ) { int ret = DoRead(session); if (ret > 0) { if (count <= session->inbufoffset) { memcpy(buffer, session->inbuf, count); // Move the stuff left in inbuf to the beginning of it memcpy(session->inbuf, session->inbuf + count, (session->inbufoffset - count)); // Now we need to set session->inbufoffset to the amount of data still waiting to be handed to insp. session->inbufoffset -= count; // Insp uses readresult as the count of how much data there is in buffer, so: readresult = count; } else { // There's not as much in the inbuf as there is space in the buffer, so just copy the whole thing. memcpy(buffer, session->inbuf, session->inbufoffset); readresult = session->inbufoffset; // Zero the offset, as there's nothing there.. session->inbufoffset = 0; } return 1; } else { return ret; } } } return -1; } virtual int OnRawSocketWrite(int fd, const char* buffer, int count) { issl_session* session = &sessions[fd]; if (!session->sess) { ServerInstance->Log(DEBUG,"Close session missing sess"); CloseSession(session); return -1; } session->outbuf.append(buffer, count); if (session->status == ISSL_HANDSHAKING) { // The handshake isn't finished, try to finish it. if (session->rstat == ISSL_WRITE || session->wstat == ISSL_WRITE) { ServerInstance->Log(DEBUG,"Handshake resume"); Handshake(session); } } if (session->status == ISSL_OPEN) { if (session->rstat == ISSL_WRITE) { ServerInstance->Log(DEBUG,"DoRead"); DoRead(session); } if (session->wstat == ISSL_WRITE) { ServerInstance->Log(DEBUG,"DoWrite"); return DoWrite(session); } } return 1; } int DoWrite(issl_session* session) { if (!session->outbuf.size()) return -1; int ret = SSL_write(session->sess, session->outbuf.data(), session->outbuf.size()); if (ret == 0) { ServerInstance->Log(DEBUG,"Oops, got 0 from SSL_write"); CloseSession(session); return 0; } else if (ret < 0) { int err = SSL_get_error(session->sess, ret); if (err == SSL_ERROR_WANT_WRITE) { session->wstat = ISSL_WRITE; return -1; } else if (err == SSL_ERROR_WANT_READ) { session->wstat = ISSL_READ; return -1; } else { ServerInstance->Log(DEBUG,"Close due to returned -1 in SSL_Write"); CloseSession(session); return 0; } } else { session->outbuf = session->outbuf.substr(ret); return ret; } } int DoRead(issl_session* session) { // Is this right? Not sure if the unencrypted data is garaunteed to be the same length. // Read into the inbuffer, offset from the beginning by the amount of data we have that insp hasn't taken yet. ServerInstance->Log(DEBUG,"DoRead"); int ret = SSL_read(session->sess, session->inbuf + session->inbufoffset, inbufsize - session->inbufoffset); if (ret == 0) { // Client closed connection. ServerInstance->Log(DEBUG,"Oops, got 0 from SSL_read"); CloseSession(session); return 0; } else if (ret < 0) { int err = SSL_get_error(session->sess, ret); if (err == SSL_ERROR_WANT_READ) { session->rstat = ISSL_READ; ServerInstance->Log(DEBUG,"Setting want_read"); return -1; } else if (err == SSL_ERROR_WANT_WRITE) { session->rstat = ISSL_WRITE; ServerInstance->Log(DEBUG,"Setting want_write"); return -1; } else { ServerInstance->Log(DEBUG,"Closed due to returned -1 in SSL_Read"); CloseSession(session); return 0; } } else { // Read successfully 'ret' bytes into inbuf + inbufoffset // There are 'ret' + 'inbufoffset' bytes of data in 'inbuf' // 'buffer' is 'count' long session->inbufoffset += ret; return ret; } } // :kenny.chatspike.net 320 Om Epy|AFK :is a Secure Connection virtual void OnWhois(userrec* source, userrec* dest) { if (!clientactive) return; // Bugfix, only send this numeric for *our* SSL users if (dest->GetExt("ssl", dummy) || (IS_LOCAL(dest) && isin(dest->GetPort(), listenports))) { ServerInstance->SendWhoisLine(source, dest, 320, "%s %s :is using a secure connection", source->nick, dest->nick); } } virtual void OnSyncUserMetaData(userrec* user, Module* proto, void* opaque, const std::string &extname, bool displayable) { // check if the linking module wants to know about OUR metadata if (extname == "ssl") { // check if this user has an swhois field to send if(user->GetExt(extname, dummy)) { // call this function in the linking module, let it format the data how it // sees fit, and send it on its way. We dont need or want to know how. proto->ProtoSendMetaData(opaque, TYPE_USER, user, extname, displayable ? "Enabled" : "ON"); } } } virtual void OnDecodeMetaData(int target_type, void* target, const std::string &extname, const std::string &extdata) { // check if its our metadata key, and its associated with a user if ((target_type == TYPE_USER) && (extname == "ssl")) { userrec* dest = (userrec*)target; // if they dont already have an ssl flag, accept the remote server's if (!dest->GetExt(extname, dummy)) { dest->Extend(extname, "ON"); } } } bool Handshake(issl_session* session) { ServerInstance->Log(DEBUG,"Handshake"); int ret; if (session->outbound) { ServerInstance->Log(DEBUG,"SSL_connect"); ret = SSL_connect(session->sess); } else ret = SSL_accept(session->sess); if (ret < 0) { int err = SSL_get_error(session->sess, ret); if (err == SSL_ERROR_WANT_READ) { ServerInstance->Log(DEBUG,"Want read, handshaking"); session->rstat = ISSL_READ; session->status = ISSL_HANDSHAKING; return true; } else if (err == SSL_ERROR_WANT_WRITE) { ServerInstance->Log(DEBUG,"Want write, handshaking"); session->wstat = ISSL_WRITE; session->status = ISSL_HANDSHAKING; MakePollWrite(session); return true; } else { ServerInstance->Log(DEBUG,"Handshake failed"); CloseSession(session); } return false; } else if (ret > 0) { // Handshake complete. // This will do for setting the ssl flag...it could be done earlier if it's needed. But this seems neater. userrec* u = ServerInstance->FindDescriptor(session->fd); if (u) { if (!u->GetExt("ssl", dummy)) u->Extend("ssl", "ON"); } session->status = ISSL_OPEN; MakePollWrite(session); return true; } else if (ret == 0) { int ssl_err = SSL_get_error(session->sess, ret); char buf[1024]; ERR_print_errors_fp(stderr); ServerInstance->Log(DEBUG,"Handshake fail 2: %d: %s", ssl_err, ERR_error_string(ssl_err,buf)); CloseSession(session); return true; } return true; } virtual void OnPostConnect(userrec* user) { // This occurs AFTER OnUserConnect so we can be sure the // protocol module has propogated the NICK message. if ((user->GetExt("ssl", dummy)) && (IS_LOCAL(user))) { // Tell whatever protocol module we're using that we need to inform other servers of this metadata NOW. std::deque* metadata = new std::deque; metadata->push_back(user->nick); metadata->push_back("ssl"); // The metadata id metadata->push_back("ON"); // The value to send Event* event = new Event((char*)metadata,(Module*)this,"send_metadata"); event->Send(ServerInstance); // Trigger the event. We don't care what module picks it up. DELETE(event); DELETE(metadata); VerifyCertificate(&sessions[user->GetFd()], user); if (sessions[user->GetFd()].sess) user->WriteServ("NOTICE %s :*** You are connected using SSL cipher \"%s\"", user->nick, SSL_get_cipher(sessions[user->GetFd()].sess)); } } void MakePollWrite(issl_session* session) { OnRawSocketWrite(session->fd, NULL, 0); //EventHandler* eh = ServerInstance->FindDescriptor(session->fd); //if (eh) // ServerInstance->SE->WantWrite(eh); } void CloseSession(issl_session* session) { if (session->sess) { SSL_shutdown(session->sess); SSL_free(session->sess); } if (session->inbuf) { delete[] session->inbuf; } session->outbuf.clear(); session->inbuf = NULL; session->sess = NULL; session->status = ISSL_NONE; } void VerifyCertificate(issl_session* session, Extensible* user) { if (!session->sess || !user) return; X509* cert; ssl_cert* certinfo = new ssl_cert; unsigned int n; unsigned char md[EVP_MAX_MD_SIZE]; const EVP_MD *digest = EVP_md5(); user->Extend("ssl_cert",certinfo); cert = SSL_get_peer_certificate((SSL*)session->sess); if (!cert) { certinfo->data.insert(std::make_pair("error","Could not get peer certificate: "+std::string(get_error()))); return; } certinfo->data.insert(std::make_pair("invalid", SSL_get_verify_result(session->sess) != X509_V_OK ? ConvToStr(1) : ConvToStr(0))); if (SelfSigned) { certinfo->data.insert(std::make_pair("unknownsigner",ConvToStr(0))); certinfo->data.insert(std::make_pair("trusted",ConvToStr(1))); } else { certinfo->data.insert(std::make_pair("unknownsigner",ConvToStr(1))); certinfo->data.insert(std::make_pair("trusted",ConvToStr(0))); } certinfo->data.insert(std::make_pair("dn",std::string(X509_NAME_oneline(X509_get_subject_name(cert),0,0)))); certinfo->data.insert(std::make_pair("issuer",std::string(X509_NAME_oneline(X509_get_issuer_name(cert),0,0)))); if (!X509_digest(cert, digest, md, &n)) { certinfo->data.insert(std::make_pair("error","Out of memory generating fingerprint")); } else { certinfo->data.insert(std::make_pair("fingerprint",irc::hex(md, n))); } if ((ASN1_UTCTIME_cmp_time_t(X509_get_notAfter(cert), time(NULL)) == -1) || (ASN1_UTCTIME_cmp_time_t(X509_get_notBefore(cert), time(NULL)) == 0)) { certinfo->data.insert(std::make_pair("error","Not activated, or expired certificate")); } X509_free(cert); } }; static int error_callback(const char *str, size_t len, void *u) { ModuleSSLOpenSSL* mssl = (ModuleSSLOpenSSL*)u; mssl->PublicInstance->Log(DEFAULT, "SSL error: " + std::string(str, len - 1)); return 0; } MODULE_INIT(ModuleSSLOpenSSL); \ No newline at end of file +/* +------------------------------------+ + * | Inspire Internet Relay Chat Daemon | + * +------------------------------------+ + * + * InspIRCd: (C) 2002-2008 InspIRCd Development Team + * See: http://www.inspircd.org/wiki/index.php/Credits + * + * This program is free but copyrighted software; see + * the file COPYING for details. + * + * --------------------------------------------------- + */ + +#include "inspircd.h" + +#include +#include + +#include "configreader.h" +#include "users.h" +#include "channels.h" +#include "modules.h" + +#include "socket.h" +#include "hashcomp.h" + +#include "transport.h" + +#ifdef WINDOWS +#pragma comment(lib, "libeay32MTd") +#pragma comment(lib, "ssleay32MTd") +#undef MAX_DESCRIPTORS +#define MAX_DESCRIPTORS 10000 +#endif + +/* $ModDesc: Provides SSL support for clients */ + +/* $LinkerFlags: if("USE_FREEBSD_BASE_SSL") -lssl -lcrypto */ +/* $CompileFlags: if(!"USE_FREEBSD_BASE_SSL") pkgconfversion("openssl","0.9.7") pkgconfincludes("openssl","/openssl/ssl.h","") */ +/* $LinkerFlags: if(!"USE_FREEBSD_BASE_SSL") rpath("pkg-config --libs openssl") pkgconflibs("openssl","/libssl.so","-lssl -lcrypto -ldl") */ + +/* $ModDep: transport.h */ +/* $NoPedantic */ +/* $CopyInstall: conf/key.pem $(CONPATH) */ +/* $CopyInstall: conf/cert.pem $(CONPATH) */ + + +enum issl_status { ISSL_NONE, ISSL_HANDSHAKING, ISSL_OPEN }; +enum issl_io_status { ISSL_WRITE, ISSL_READ }; + +static bool SelfSigned = false; + +bool isin(const std::string &host, int port, const std::vector &portlist) +{ + if (std::find(portlist.begin(), portlist.end(), "*:" + ConvToStr(port)) != portlist.end()) + return true; + + if (std::find(portlist.begin(), portlist.end(), ":" + ConvToStr(port)) != portlist.end()) + return true; + + return std::find(portlist.begin(), portlist.end(), host + ":" + ConvToStr(port)) != portlist.end(); +} + +char* get_error() +{ + return ERR_error_string(ERR_get_error(), NULL); +} + +static int error_callback(const char *str, size_t len, void *u); + +/** Represents an SSL user's extra data + */ +class issl_session : public classbase +{ +public: + SSL* sess; + issl_status status; + issl_io_status rstat; + issl_io_status wstat; + + unsigned int inbufoffset; + char* inbuf; // Buffer OpenSSL reads into. + std::string outbuf; // Buffer for outgoing data that OpenSSL will not take. + int fd; + bool outbound; + + issl_session() + { + outbound = false; + rstat = ISSL_READ; + wstat = ISSL_WRITE; + } +}; + +static int OnVerify(int preverify_ok, X509_STORE_CTX *ctx) +{ + /* XXX: This will allow self signed certificates. + * In the future if we want an option to not allow this, + * we can just return preverify_ok here, and openssl + * will boot off self-signed and invalid peer certs. + */ + int ve = X509_STORE_CTX_get_error(ctx); + + SelfSigned = (ve == X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT); + + return 1; +} + +class ModuleSSLOpenSSL : public Module +{ + std::vector listenports; + + int inbufsize; + issl_session* sessions; + + SSL_CTX* ctx; + SSL_CTX* clictx; + + char* dummy; + char cipher[MAXBUF]; + + std::string keyfile; + std::string certfile; + std::string cafile; + // std::string crlfile; + std::string dhfile; + std::string sslports; + + int clientactive; + + public: + + InspIRCd* PublicInstance; + + ModuleSSLOpenSSL(InspIRCd* Me) + : Module(Me), PublicInstance(Me) + { + ServerInstance->Modules->PublishInterface("BufferedSocketHook", this); + + sessions = new issl_session[ServerInstance->SE->GetMaxFds()]; + + // Not rehashable...because I cba to reduce all the sizes of existing buffers. + inbufsize = ServerInstance->Config->NetBufferSize; + + /* Global SSL library initialization*/ + SSL_library_init(); + SSL_load_error_strings(); + + /* Build our SSL contexts: + * NOTE: OpenSSL makes us have two contexts, one for servers and one for clients. ICK. + */ + ctx = SSL_CTX_new( SSLv23_server_method() ); + clictx = SSL_CTX_new( SSLv23_client_method() ); + + SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, OnVerify); + SSL_CTX_set_verify(clictx, SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE, OnVerify); + + // Needs the flag as it ignores a plain /rehash + OnRehash(NULL,"ssl"); + Implementation eventlist[] = { I_OnRawSocketConnect, I_OnRawSocketAccept, I_OnRawSocketClose, I_OnRawSocketRead, I_OnRawSocketWrite, I_OnCleanup, I_On005Numeric, + I_OnBufferFlushed, I_OnRequest, I_OnSyncUserMetaData, I_OnDecodeMetaData, I_OnUnloadModule, I_OnRehash, I_OnWhois, I_OnPostConnect, I_OnHookUserIO }; + ServerInstance->Modules->Attach(eventlist, this, 16); + } + + virtual void OnHookUserIO(User* user, const std::string &targetip) + { + if (!user->io && isin(targetip,user->GetPort(), listenports)) + { + /* Hook the user with our module */ + user->io = this; + } + } + + virtual void OnRehash(User* user, const std::string ¶m) + { + ConfigReader Conf(ServerInstance); + + listenports.clear(); + clientactive = 0; + sslports.clear(); + + for(int index = 0; index < Conf.Enumerate("bind"); index++) + { + // For each tag + std::string x = Conf.ReadValue("bind", "type", index); + if(((x.empty()) || (x == "clients")) && (Conf.ReadValue("bind", "ssl", index) == "openssl")) + { + // Get the port we're meant to be listening on with SSL + std::string port = Conf.ReadValue("bind", "port", index); + std::string addr = Conf.ReadValue("bind", "address", index); + + irc::portparser portrange(port, false); + long portno = -1; + while ((portno = portrange.GetToken())) + { + clientactive++; + try + { + listenports.push_back(addr + ":" + ConvToStr(portno)); + + for (size_t i = 0; i < ServerInstance->Config->ports.size(); i++) + if ((ServerInstance->Config->ports[i]->GetPort() == portno) && (ServerInstance->Config->ports[i]->GetIP() == addr)) + ServerInstance->Config->ports[i]->SetDescription("ssl"); + ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_gnutls.so: Enabling SSL for port %ld", portno); + + sslports.append((addr.empty() ? "*" : addr)).append(":").append(ConvToStr(portno)).append(";"); + } + catch (ModuleException &e) + { + ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_gnutls.so: FAILED to enable SSL on port %ld: %s. Maybe it's already hooked by the same port on a different IP, or you have an other SSL or similar module loaded?", portno, e.GetReason()); + } + } + } + } + + if (!sslports.empty()) + sslports.erase(sslports.end() - 1); + + if (param != "ssl") + { + return; + } + + std::string confdir(ServerInstance->ConfigFileName); + // +1 so we the path ends with a / + confdir = confdir.substr(0, confdir.find_last_of('/') + 1); + + cafile = Conf.ReadValue("openssl", "cafile", 0); + certfile = Conf.ReadValue("openssl", "certfile", 0); + keyfile = Conf.ReadValue("openssl", "keyfile", 0); + dhfile = Conf.ReadValue("openssl", "dhfile", 0); + + // Set all the default values needed. + if (cafile.empty()) + cafile = "ca.pem"; + + if (certfile.empty()) + certfile = "cert.pem"; + + if (keyfile.empty()) + keyfile = "key.pem"; + + if (dhfile.empty()) + dhfile = "dhparams.pem"; + + // Prepend relative paths with the path to the config directory. + if ((cafile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(cafile))) + cafile = confdir + cafile; + + if ((certfile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(certfile))) + certfile = confdir + certfile; + + if ((keyfile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(keyfile))) + keyfile = confdir + keyfile; + + if ((dhfile[0] != '/') && (!ServerInstance->Config->StartsWithWindowsDriveLetter(dhfile))) + dhfile = confdir + dhfile; + + /* Load our keys and certificates + * NOTE: OpenSSL's error logging API sucks, don't blame us for this clusterfuck. + */ + if ((!SSL_CTX_use_certificate_chain_file(ctx, certfile.c_str())) || (!SSL_CTX_use_certificate_chain_file(clictx, certfile.c_str()))) + { + ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Can't read certificate file %s. %s", certfile.c_str(), strerror(errno)); + ERR_print_errors_cb(error_callback, this); + } + + if (((!SSL_CTX_use_PrivateKey_file(ctx, keyfile.c_str(), SSL_FILETYPE_PEM))) || (!SSL_CTX_use_PrivateKey_file(clictx, keyfile.c_str(), SSL_FILETYPE_PEM))) + { + ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Can't read key file %s. %s", keyfile.c_str(), strerror(errno)); + ERR_print_errors_cb(error_callback, this); + } + + /* Load the CAs we trust*/ + if (((!SSL_CTX_load_verify_locations(ctx, cafile.c_str(), 0))) || (!SSL_CTX_load_verify_locations(clictx, cafile.c_str(), 0))) + { + ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Can't read CA list from %s. %s", cafile.c_str(), strerror(errno)); + ERR_print_errors_cb(error_callback, this); + } + + FILE* dhpfile = fopen(dhfile.c_str(), "r"); + DH* ret; + + if (dhpfile == NULL) + { + ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so Couldn't open DH file %s: %s", dhfile.c_str(), strerror(errno)); + throw ModuleException("Couldn't open DH file " + dhfile + ": " + strerror(errno)); + } + else + { + ret = PEM_read_DHparams(dhpfile, NULL, NULL, NULL); + if ((SSL_CTX_set_tmp_dh(ctx, ret) < 0) || (SSL_CTX_set_tmp_dh(clictx, ret) < 0)) + { + ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Couldn't set DH parameters %s. SSL errors follow:", dhfile.c_str()); + ERR_print_errors_cb(error_callback, this); + } + } + + fclose(dhpfile); + } + + virtual void On005Numeric(std::string &output) + { + output.append(" SSL=" + sslports); + } + + virtual ~ModuleSSLOpenSSL() + { + SSL_CTX_free(ctx); + SSL_CTX_free(clictx); + ServerInstance->Modules->UnpublishInterface("BufferedSocketHook", this); + delete[] sessions; + } + + virtual void OnCleanup(int target_type, void* item) + { + if (target_type == TYPE_USER) + { + User* user = (User*)item; + + if (user->GetExt("ssl", dummy) && IS_LOCAL(user) && user->io == this) + { + // User is using SSL, they're a local user, and they're using one of *our* SSL ports. + // Potentially there could be multiple SSL modules loaded at once on different ports. + ServerInstance->Users->QuitUser(user, "SSL module unloading"); + } + if (user->GetExt("ssl_cert", dummy)) + { + ssl_cert* tofree; + user->GetExt("ssl_cert", tofree); + delete tofree; + user->Shrink("ssl_cert"); + } + + user->io = NULL; + } + } + + virtual void OnUnloadModule(Module* mod, const std::string &name) + { + if (mod == this) + { + for(unsigned int i = 0; i < listenports.size(); i++) + { + for (size_t j = 0; j < ServerInstance->Config->ports.size(); j++) + if (listenports[i] == (ServerInstance->Config->ports[j]->GetIP()+":"+ConvToStr(ServerInstance->Config->ports[j]->GetPort()))) + ServerInstance->Config->ports[j]->SetDescription("plaintext"); + } + } + } + + virtual Version GetVersion() + { + return Version(1, 2, 0, 0, VF_VENDOR, API_VERSION); + } + + + virtual const char* OnRequest(Request* request) + { + ISHRequest* ISR = (ISHRequest*)request; + if (strcmp("IS_NAME", request->GetId()) == 0) + { + return "openssl"; + } + else if (strcmp("IS_HOOK", request->GetId()) == 0) + { + const char* ret = "OK"; + try + { + ret = ServerInstance->Config->AddIOHook((Module*)this, (BufferedSocket*)ISR->Sock) ? "OK" : NULL; + } + catch (ModuleException &e) + { + return NULL; + } + + return ret; + } + else if (strcmp("IS_UNHOOK", request->GetId()) == 0) + { + return ServerInstance->Config->DelIOHook((BufferedSocket*)ISR->Sock) ? "OK" : NULL; + } + else if (strcmp("IS_HSDONE", request->GetId()) == 0) + { + if (ISR->Sock->GetFd() < 0) + return "OK"; + + issl_session* session = &sessions[ISR->Sock->GetFd()]; + return (session->status == ISSL_HANDSHAKING) ? NULL : "OK"; + } + else if (strcmp("IS_ATTACH", request->GetId()) == 0) + { + issl_session* session = &sessions[ISR->Sock->GetFd()]; + if (session->sess) + { + VerifyCertificate(session, (BufferedSocket*)ISR->Sock); + return "OK"; + } + } + return NULL; + } + + + virtual void OnRawSocketAccept(int fd, const std::string &ip, int localport) + { + /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */ + if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() - 1)) + return; + + issl_session* session = &sessions[fd]; + + session->fd = fd; + session->inbuf = new char[inbufsize]; + session->inbufoffset = 0; + session->sess = SSL_new(ctx); + session->status = ISSL_NONE; + session->outbound = false; + + if (session->sess == NULL) + return; + + if (SSL_set_fd(session->sess, fd) == 0) + { + ServerInstance->Logs->Log("m_ssl_openssl",DEBUG,"BUG: Can't set fd with SSL_set_fd: %d", fd); + return; + } + + Handshake(session); + } + + virtual void OnRawSocketConnect(int fd) + { + /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */ + if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() -1)) + return; + + issl_session* session = &sessions[fd]; + + session->fd = fd; + session->inbuf = new char[inbufsize]; + session->inbufoffset = 0; + session->sess = SSL_new(clictx); + session->status = ISSL_NONE; + session->outbound = true; + + if (session->sess == NULL) + return; + + if (SSL_set_fd(session->sess, fd) == 0) + { + ServerInstance->Logs->Log("m_ssl_openssl",DEBUG,"BUG: Can't set fd with SSL_set_fd: %d", fd); + return; + } + + Handshake(session); + } + + virtual void OnRawSocketClose(int fd) + { + /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */ + if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() - 1)) + return; + + CloseSession(&sessions[fd]); + + EventHandler* user = ServerInstance->SE->GetRef(fd); + + if ((user) && (user->GetExt("ssl_cert", dummy))) + { + ssl_cert* tofree; + user->GetExt("ssl_cert", tofree); + delete tofree; + user->Shrink("ssl_cert"); + } + } + + virtual int OnRawSocketRead(int fd, char* buffer, unsigned int count, int &readresult) + { + /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */ + if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() - 1)) + return 0; + + issl_session* session = &sessions[fd]; + + if (!session->sess) + { + readresult = 0; + CloseSession(session); + return 1; + } + + if (session->status == ISSL_HANDSHAKING) + { + if (session->rstat == ISSL_READ || session->wstat == ISSL_READ) + { + // The handshake isn't finished and it wants to read, try to finish it. + if (!Handshake(session)) + { + // Couldn't resume handshake. + return -1; + } + } + else + { + errno = EAGAIN; + return -1; + } + } + + // If we resumed the handshake then session->status will be ISSL_OPEN + + if (session->status == ISSL_OPEN) + { + if (session->wstat == ISSL_READ) + { + if(DoWrite(session) == 0) + return 0; + } + + if (session->rstat == ISSL_READ) + { + int ret = DoRead(session); + + if (ret > 0) + { + if (count <= session->inbufoffset) + { + memmove(buffer, session->inbuf, count); + // Move the stuff left in inbuf to the beginning of it + memmove(session->inbuf, session->inbuf + count, (session->inbufoffset - count)); + // Now we need to set session->inbufoffset to the amount of data still waiting to be handed to insp. + session->inbufoffset -= count; + // Insp uses readresult as the count of how much data there is in buffer, so: + readresult = count; + } + else + { + // There's not as much in the inbuf as there is space in the buffer, so just copy the whole thing. + memmove(buffer, session->inbuf, session->inbufoffset); + + readresult = session->inbufoffset; + // Zero the offset, as there's nothing there.. + session->inbufoffset = 0; + } + return 1; + } + return ret; + } + } + + return -1; + } + + virtual int OnRawSocketWrite(int fd, const char* buffer, int count) + { + /* Are there any possibilities of an out of range fd? Hope not, but lets be paranoid */ + if ((fd < 0) || (fd > ServerInstance->SE->GetMaxFds() - 1)) + return 0; + + issl_session* session = &sessions[fd]; + + if (!session->sess) + { + CloseSession(session); + return -1; + } + + session->outbuf.append(buffer, count); + MakePollWrite(session); + + if (session->status == ISSL_HANDSHAKING) + { + // The handshake isn't finished, try to finish it. + if (session->rstat == ISSL_WRITE || session->wstat == ISSL_WRITE) + { + Handshake(session); + } + } + + if (session->status == ISSL_OPEN) + { + if (session->rstat == ISSL_WRITE) + { + DoRead(session); + } + + if (session->wstat == ISSL_WRITE) + { + return DoWrite(session); + } + } + + return 1; + } + + int DoWrite(issl_session* session) + { + if (!session->outbuf.size()) + return -1; + + int ret = SSL_write(session->sess, session->outbuf.data(), session->outbuf.size()); + + if (ret == 0) + { + CloseSession(session); + return 0; + } + else if (ret < 0) + { + int err = SSL_get_error(session->sess, ret); + + if (err == SSL_ERROR_WANT_WRITE) + { + session->wstat = ISSL_WRITE; + return -1; + } + else if (err == SSL_ERROR_WANT_READ) + { + session->wstat = ISSL_READ; + return -1; + } + else + { + CloseSession(session); + return 0; + } + } + else + { + session->outbuf = session->outbuf.substr(ret); + return ret; + } + } + + int DoRead(issl_session* session) + { + // Is this right? Not sure if the unencrypted data is garaunteed to be the same length. + // Read into the inbuffer, offset from the beginning by the amount of data we have that insp hasn't taken yet. + + int ret = SSL_read(session->sess, session->inbuf + session->inbufoffset, inbufsize - session->inbufoffset); + + if (ret == 0) + { + // Client closed connection. + CloseSession(session); + return 0; + } + else if (ret < 0) + { + int err = SSL_get_error(session->sess, ret); + + if (err == SSL_ERROR_WANT_READ) + { + session->rstat = ISSL_READ; + return -1; + } + else if (err == SSL_ERROR_WANT_WRITE) + { + session->rstat = ISSL_WRITE; + MakePollWrite(session); + return -1; + } + else + { + CloseSession(session); + return 0; + } + } + else + { + // Read successfully 'ret' bytes into inbuf + inbufoffset + // There are 'ret' + 'inbufoffset' bytes of data in 'inbuf' + // 'buffer' is 'count' long + + session->inbufoffset += ret; + + return ret; + } + } + + // :kenny.chatspike.net 320 Om Epy|AFK :is a Secure Connection + virtual void OnWhois(User* source, User* dest) + { + if (!clientactive) + return; + + // Bugfix, only send this numeric for *our* SSL users + if (dest->GetExt("ssl", dummy) || ((IS_LOCAL(dest) && dest->io == this))) + { + ServerInstance->SendWhoisLine(source, dest, 320, "%s %s :is using a secure connection", source->nick.c_str(), dest->nick.c_str()); + } + } + + virtual void OnSyncUserMetaData(User* user, Module* proto, void* opaque, const std::string &extname, bool displayable) + { + // check if the linking module wants to know about OUR metadata + if (extname == "ssl") + { + // check if this user has an swhois field to send + if(user->GetExt(extname, dummy)) + { + // call this function in the linking module, let it format the data how it + // sees fit, and send it on its way. We dont need or want to know how. + proto->ProtoSendMetaData(opaque, TYPE_USER, user, extname, displayable ? "Enabled" : "ON"); + } + } + } + + virtual void OnDecodeMetaData(int target_type, void* target, const std::string &extname, const std::string &extdata) + { + // check if its our metadata key, and its associated with a user + if ((target_type == TYPE_USER) && (extname == "ssl")) + { + User* dest = (User*)target; + // if they dont already have an ssl flag, accept the remote server's + if (!dest->GetExt(extname, dummy)) + { + dest->Extend(extname, "ON"); + } + } + } + + bool Handshake(issl_session* session) + { + int ret; + + if (session->outbound) + ret = SSL_connect(session->sess); + else + ret = SSL_accept(session->sess); + + if (ret < 0) + { + int err = SSL_get_error(session->sess, ret); + + if (err == SSL_ERROR_WANT_READ) + { + session->rstat = ISSL_READ; + session->status = ISSL_HANDSHAKING; + return true; + } + else if (err == SSL_ERROR_WANT_WRITE) + { + session->wstat = ISSL_WRITE; + session->status = ISSL_HANDSHAKING; + MakePollWrite(session); + return true; + } + else + { + CloseSession(session); + } + + return false; + } + else if (ret > 0) + { + // Handshake complete. + // This will do for setting the ssl flag...it could be done earlier if it's needed. But this seems neater. + User* u = ServerInstance->FindDescriptor(session->fd); + if (u) + { + if (!u->GetExt("ssl", dummy)) + u->Extend("ssl", "ON"); + } + + session->status = ISSL_OPEN; + + MakePollWrite(session); + + return true; + } + else if (ret == 0) + { + CloseSession(session); + return true; + } + + return true; + } + + virtual void OnPostConnect(User* user) + { + // This occurs AFTER OnUserConnect so we can be sure the + // protocol module has propagated the NICK message. + if ((user->GetExt("ssl", dummy)) && (IS_LOCAL(user))) + { + // Tell whatever protocol module we're using that we need to inform other servers of this metadata NOW. + ServerInstance->PI->SendMetaData(user, TYPE_USER, "SSL", "on"); + + VerifyCertificate(&sessions[user->GetFd()], user); + if (sessions[user->GetFd()].sess) + user->WriteServ("NOTICE %s :*** You are connected using SSL cipher \"%s\"", user->nick.c_str(), SSL_get_cipher(sessions[user->GetFd()].sess)); + } + } + + void MakePollWrite(issl_session* session) + { + //OnRawSocketWrite(session->fd, NULL, 0); + EventHandler* eh = ServerInstance->FindDescriptor(session->fd); + if (eh) + { + ServerInstance->SE->WantWrite(eh); + } + } + + virtual void OnBufferFlushed(User* user) + { + if (user->GetExt("ssl")) + { + issl_session* session = &sessions[user->GetFd()]; + if (session && session->outbuf.size()) + OnRawSocketWrite(user->GetFd(), NULL, 0); + } + } + + void CloseSession(issl_session* session) + { + if (session->sess) + { + SSL_shutdown(session->sess); + SSL_free(session->sess); + } + + if (session->inbuf) + { + delete[] session->inbuf; + } + + session->outbuf.clear(); + session->inbuf = NULL; + session->sess = NULL; + session->status = ISSL_NONE; + } + + void VerifyCertificate(issl_session* session, Extensible* user) + { + if (!session->sess || !user) + return; + + X509* cert; + ssl_cert* certinfo = new ssl_cert; + unsigned int n; + unsigned char md[EVP_MAX_MD_SIZE]; + const EVP_MD *digest = EVP_md5(); + + user->Extend("ssl_cert",certinfo); + + cert = SSL_get_peer_certificate((SSL*)session->sess); + + if (!cert) + { + certinfo->data.insert(std::make_pair("error","Could not get peer certificate: "+std::string(get_error()))); + return; + } + + certinfo->data.insert(std::make_pair("invalid", SSL_get_verify_result(session->sess) != X509_V_OK ? ConvToStr(1) : ConvToStr(0))); + + if (SelfSigned) + { + certinfo->data.insert(std::make_pair("unknownsigner",ConvToStr(0))); + certinfo->data.insert(std::make_pair("trusted",ConvToStr(1))); + } + else + { + certinfo->data.insert(std::make_pair("unknownsigner",ConvToStr(1))); + certinfo->data.insert(std::make_pair("trusted",ConvToStr(0))); + } + + certinfo->data.insert(std::make_pair("dn",std::string(X509_NAME_oneline(X509_get_subject_name(cert),0,0)))); + certinfo->data.insert(std::make_pair("issuer",std::string(X509_NAME_oneline(X509_get_issuer_name(cert),0,0)))); + + if (!X509_digest(cert, digest, md, &n)) + { + certinfo->data.insert(std::make_pair("error","Out of memory generating fingerprint")); + } + else + { + certinfo->data.insert(std::make_pair("fingerprint",irc::hex(md, n))); + } + + if ((ASN1_UTCTIME_cmp_time_t(X509_get_notAfter(cert), time(NULL)) == -1) || (ASN1_UTCTIME_cmp_time_t(X509_get_notBefore(cert), time(NULL)) == 0)) + { + certinfo->data.insert(std::make_pair("error","Not activated, or expired certificate")); + } + + X509_free(cert); + } + + void Prioritize() + { + Module* server = ServerInstance->Modules->Find("m_spanningtree.so"); + ServerInstance->Modules->SetPriority(this, I_OnPostConnect, PRIO_AFTER, &server); + } + +}; + +static int error_callback(const char *str, size_t len, void *u) +{ + ModuleSSLOpenSSL* mssl = (ModuleSSLOpenSSL*)u; + mssl->PublicInstance->Logs->Log("m_ssl_openssl",DEFAULT, "SSL error: " + std::string(str, len - 1)); + + // + // XXX: Remove this line, it causes valgrind warnings... + // + // MD_update(&m, buf, j); + // + // + // ... ONLY JOKING! :-) + // + + return 0; +} + +MODULE_INIT(ModuleSSLOpenSSL)