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