* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
- * InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ * InspIRCd: (C) 2002-2010 InspIRCd Development Team
* See: http://wiki.inspircd.org/Credits
*
* This program is free but copyrighted software; see
#include "inspircd.h"
#include <openssl/ssl.h>
#include <openssl/err.h>
-#include "transport.h"
+#include "ssl.h"
#ifdef WINDOWS
#pragma comment(lib, "libeay32MTd")
/* $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;
/** Represents an SSL user's extra data
*/
-class issl_session : public classbase
+class issl_session
{
public:
SSL* sess;
issl_status status;
- issl_io_status rstat;
- issl_io_status wstat;
+ reference<ssl_cert> cert;
- unsigned int inbufoffset;
- char* inbuf; // Buffer OpenSSL reads into.
- std::string outbuf;
int fd;
bool outbound;
+ bool data_to_write;
issl_session()
{
outbound = false;
- rstat = ISSL_READ;
- wstat = ISSL_WRITE;
+ data_to_write = false;
}
};
class ModuleSSLOpenSSL : public Module
{
- std::set<ListenSocketBase*> listenports;
-
int inbufsize;
issl_session* sessions;
char cipher[MAXBUF];
- std::string keyfile;
- std::string certfile;
- std::string cafile;
- // std::string crlfile;
- std::string dhfile;
std::string sslports;
+ bool use_sha;
+ ServiceProvider iohook;
public:
- InspIRCd* PublicInstance;
-
- ModuleSSLOpenSSL(InspIRCd* Me)
- : Module(Me), PublicInstance(Me)
+ ModuleSSLOpenSSL() : iohook(this, "ssl/openssl", SERVICE_IOHOOK)
{
- 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.
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);
+ }
+ void init()
+ {
// Needs the flag as it ignores a plain /rehash
OnModuleRehash(NULL,"ssl");
- Implementation eventlist[] = {
- I_On005Numeric, I_OnBufferFlushed, I_OnRequest, I_OnRehash, I_OnModuleRehash, I_OnPostConnect,
- I_OnHookIO };
+ Implementation eventlist[] = { I_On005Numeric, I_OnRehash, I_OnModuleRehash, I_OnHookIO, I_OnUserConnect };
ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
+ ServerInstance->Modules->AddService(iohook);
}
- void OnHookIO(StreamSocket* user, ListenSocketBase* lsb)
+ void OnHookIO(StreamSocket* user, ListenSocket* lsb)
{
- if (!user->GetIOHook() && listenports.find(lsb) != listenports.end())
+ if (!user->GetIOHook() && lsb->bind_tag->getString("ssl") == "openssl")
{
/* Hook the user with our module */
user->AddIOHook(this);
void OnRehash(User* user)
{
- ConfigReader Conf(ServerInstance);
+ ConfigReader Conf;
- listenports.clear();
sslports.clear();
for (size_t i = 0; i < ServerInstance->ports.size(); i++)
{
- ListenSocketBase* port = ServerInstance->ports[i];
- std::string desc = port->GetDescription();
- if (desc != "openssl")
+ ListenSocket* port = ServerInstance->ports[i];
+ if (port->bind_tag->getString("ssl") != "openssl")
continue;
- listenports.insert(port);
- std::string portid = port->GetBindDesc();
-
+ std::string portid = port->bind_desc;
ServerInstance->Logs->Log("m_ssl_openssl", DEFAULT, "m_ssl_openssl.so: Enabling SSL for port %s", portid.c_str());
- if (port->GetIP() != "127.0.0.1")
+ if (port->bind_tag->getString("type", "clients") == "clients" && port->bind_addr != "127.0.0.1")
sslports.append(portid).append(";");
}
if (param != "ssl")
return;
+ std::string keyfile;
+ std::string certfile;
+ std::string cafile;
+ std::string dhfile;
OnRehash(user);
- ConfigReader Conf(ServerInstance);
-
- 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";
+ ConfigTag* conf = ServerInstance->Config->ConfValue("openssl");
- if (keyfile.empty())
- keyfile = "key.pem";
+ cafile = conf->getString("cafile", "conf/ca.pem");
+ certfile = conf->getString("certfile", "conf/cert.pem");
+ keyfile = conf->getString("keyfile", "conf/key.pem");
+ dhfile = conf->getString("dhfile", "conf/dhparams.pem");
+ std::string hash = conf->getString("hash", "md5");
+ if (hash != "sha1" && hash != "md5")
+ throw ModuleException("Unknown hash type " + hash);
+ use_sha = (hash == "sha1");
- 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.
{
SSL_CTX_free(ctx);
SSL_CTX_free(clictx);
- ServerInstance->Modules->UnpublishInterface("BufferedSocketHook", this);
delete[] sessions;
}
+ void OnUserConnect(LocalUser* user)
+ {
+ if (user->eh.GetIOHook() == this)
+ {
+ if (sessions[user->GetFd()].sess)
+ {
+ SSLCertSubmission(user, this, ServerInstance->Modules->Find("m_sslinfo.so"), sessions[user->GetFd()].cert);
+
+ if (!sessions[user->GetFd()].cert->fingerprint.empty())
+ user->WriteServ("NOTICE %s :*** You are connected using SSL fingerprint %s",
+ user->nick.c_str(), sessions[user->GetFd()].cert->fingerprint.c_str());
+ }
+ }
+ }
+
void OnCleanup(int target_type, void* item)
{
if (target_type == TYPE_USER)
{
- User* user = (User*)item;
+ LocalUser* user = IS_LOCAL((User*)item);
- if (user->GetIOHook() == this)
+ if (user && user->eh.GetIOHook() == 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");
- user->DelIOHook();
}
}
}
Version GetVersion()
{
- return Version("Provides SSL support for clients", VF_VENDOR, API_VERSION);
+ return Version("Provides SSL support for clients", VF_VENDOR);
}
-
- const char* OnRequest(Request* request)
+ void OnRequest(Request& request)
{
- ISHRequest* ISR = (ISHRequest*)request;
- if (strcmp("IS_NAME", request->GetId()) == 0)
- {
- return "openssl";
- }
- else if (strcmp("IS_HOOK", request->GetId()) == 0)
- {
- ISR->Sock->AddIOHook(this);
- return "OK";
- }
- else if (strcmp("IS_UNHOOK", request->GetId()) == 0)
- {
- ISR->Sock->DelIOHook();
- return "OK";
- }
- else if (strcmp("IS_HSDONE", request->GetId()) == 0)
+ if (strcmp("GET_SSL_CERT", request.id) == 0)
{
- if (ISR->Sock->GetFd() < 0)
- return "OK";
+ SocketCertificateRequest& req = static_cast<SocketCertificateRequest&>(request);
+ int fd = req.sock->GetFd();
+ issl_session* session = &sessions[fd];
- issl_session* session = &sessions[ISR->Sock->GetFd()];
- return (session->status == ISSL_HANDSHAKING) ? NULL : "OK";
+ req.cert = session->cert;
}
- else if (strcmp("IS_ATTACH", request->GetId()) == 0)
- {
- issl_session* session = &sessions[ISR->Sock->GetFd()];
- if (session->sess)
- {
- return "OK";
- }
- }
- else if (strcmp("GET_CERT", request->GetId()) == 0)
- {
- Module* sslinfo = ServerInstance->Modules->Find("m_sslinfo.so");
- if (sslinfo)
- return sslinfo->OnRequest(request);
- }
- return NULL;
}
-
void OnStreamSocketAccept(StreamSocket* user, irc::sockets::sockaddrs* client, irc::sockets::sockaddrs* server)
{
int fd = user->GetFd();
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;
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->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(user, session))
- {
- // Couldn't resume handshake.
- if (session->status == ISSL_NONE)
- return -1;
- return 0;
- }
- }
- else
+ // The handshake isn't finished and it wants to read, try to finish it.
+ if (!Handshake(user, session))
{
+ // Couldn't resume handshake.
+ if (session->status == ISSL_NONE)
+ return -1;
return 0;
}
}
if (session->status == ISSL_OPEN)
{
- if (session->wstat == ISSL_READ)
+ char* buffer = ServerInstance->GetReadBuffer();
+ size_t bufsiz = ServerInstance->Config->NetBufferSize;
+ int ret = SSL_read(session->sess, buffer, bufsiz);
+
+ if (ret > 0)
{
- if(DoWrite(user, session) == 0)
- return 0;
+ recvq.append(buffer, ret);
+ return 1;
}
-
- if (session->rstat == ISSL_READ)
+ else if (ret == 0)
{
- int ret = DoRead(user, session);
+ // Client closed connection.
+ CloseSession(session);
+ return -1;
+ }
+ else if (ret < 0)
+ {
+ int err = SSL_get_error(session->sess, ret);
- if (ret > 0)
+ if (err == SSL_ERROR_WANT_READ)
{
- recvq.append(session->inbuf, session->inbufoffset);
- session->inbufoffset = 0;
- return 1;
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ);
+ return 0;
}
- else if (errno == EAGAIN || errno == EINTR)
+ else if (err == SSL_ERROR_WANT_WRITE)
+ {
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE);
return 0;
+ }
else
+ {
+ CloseSession(session);
return -1;
+ }
}
}
int OnStreamSocketWrite(StreamSocket* user, std::string& buffer)
{
int fd = user->GetFd();
- /* 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 -1;
issl_session* session = &sessions[fd];
return -1;
}
+ session->data_to_write = true;
+
if (session->status == ISSL_HANDSHAKING)
{
- // The handshake isn't finished, try to finish it.
- if (session->rstat == ISSL_WRITE || session->wstat == ISSL_WRITE)
+ if (!Handshake(user, session))
{
- if (!Handshake(user, session))
- {
- // Couldn't resume handshake.
- if (session->status == ISSL_NONE)
- return -1;
- return 0;
- }
+ // Couldn't resume handshake.
+ if (session->status == ISSL_NONE)
+ return -1;
+ return 0;
}
}
- int rv = 0;
-
- // don't pull items into the output buffer until they are
- // unlikely to block; this allows sendq exceeded to continue
- // to work for SSL users.
- // TODO better signaling for I/O requests so this isn't needed
- if (session->outbuf.empty())
- {
- session->outbuf = buffer;
- rv = 1;
- }
-
if (session->status == ISSL_OPEN)
{
- if (session->rstat == ISSL_WRITE)
+ int ret = SSL_write(session->sess, buffer.data(), buffer.size());
+ if (ret == (int)buffer.length())
{
- DoRead(user, session);
+ session->data_to_write = false;
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
+ return 1;
}
-
- if (session->wstat == ISSL_WRITE)
+ else if (ret > 0)
{
- DoWrite(user, session);
- }
- }
-
- if (rv == 0 || !session->outbuf.empty())
- ServerInstance->SE->WantWrite(user);
-
- return rv;
- }
-
- int DoWrite(StreamSocket* user, 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;
- ServerInstance->SE->WantWrite(user);
- return -1;
- }
- else if (err == SSL_ERROR_WANT_READ)
- {
- session->wstat = ISSL_READ;
- return -1;
- }
- else
- {
- CloseSession(session);
+ buffer = buffer.substr(ret);
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
return 0;
}
- }
- else
- {
- session->outbuf = session->outbuf.substr(ret);
- return ret;
- }
- }
-
- int DoRead(StreamSocket* user, 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)
+ else if (ret == 0)
{
- session->rstat = ISSL_WRITE;
- ServerInstance->SE->WantWrite(user);
+ CloseSession(session);
return -1;
}
- else
+ else if (ret < 0)
{
- 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
+ int err = SSL_get_error(session->sess, ret);
- session->inbufoffset += ret;
-
- return ret;
+ if (err == SSL_ERROR_WANT_WRITE)
+ {
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_SINGLE_WRITE);
+ return 0;
+ }
+ else if (err == SSL_ERROR_WANT_READ)
+ {
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
+ return 0;
+ }
+ else
+ {
+ CloseSession(session);
+ return -1;
+ }
+ }
}
+ return 0;
}
- bool Handshake(EventHandler* user, issl_session* session)
+ bool Handshake(StreamSocket* user, issl_session* session)
{
int ret;
if (err == SSL_ERROR_WANT_READ)
{
- session->rstat = ISSL_READ;
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
session->status = ISSL_HANDSHAKING;
return true;
}
else if (err == SSL_ERROR_WANT_WRITE)
{
- session->wstat = ISSL_WRITE;
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_NO_READ | FD_WANT_SINGLE_WRITE);
session->status = ISSL_HANDSHAKING;
- ServerInstance->SE->WantWrite(user);
return true;
}
else
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.
- EventHandler *u = ServerInstance->SE->GetRef(session->fd);
- VerifyCertificate(session, u);
+ VerifyCertificate(session, user);
session->status = ISSL_OPEN;
- ServerInstance->SE->WantWrite(user);
+ ServerInstance->SE->ChangeEventMask(user, FD_WANT_POLL_READ | FD_WANT_NO_WRITE | FD_ADD_TRIAL_WRITE);
return true;
}
return true;
}
- void OnBufferFlushed(User* user)
- {
- if (user->GetIOHook() == this)
- {
- std::string dummy;
- issl_session* session = &sessions[user->GetFd()];
- if (session && session->outbuf.size())
- OnStreamSocketWrite(user, dummy);
- }
- }
-
void CloseSession(issl_session* session)
{
if (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;
errno = EIO;
}
- void VerifyCertificate(issl_session* session, Extensible* user)
+ void VerifyCertificate(issl_session* session, StreamSocket* user)
{
- if (!session->sess || !user)
- return;
-
- Module* sslinfo = ServerInstance->Modules->Find("m_sslinfo.so");
- if (!sslinfo)
+ if (!session->sess || !user || session->cert)
return;
X509* cert;
ssl_cert* certinfo = new ssl_cert;
+ session->cert = certinfo;
unsigned int n;
unsigned char md[EVP_MAX_MD_SIZE];
- const EVP_MD *digest = EVP_md5();
+ const EVP_MD *digest = use_sha ? EVP_sha1() : EVP_md5();
cert = SSL_get_peer_certificate((SSL*)session->sess);
if (!cert)
{
certinfo->error = "Could not get peer certificate: "+std::string(get_error());
- BufferedSocketFingerprintSubmission(user, this, sslinfo, certinfo).Send();
return;
}
}
X509_free(cert);
- BufferedSocketFingerprintSubmission(user, this, sslinfo, certinfo).Send();
}
-
- void Prioritize()
- {
- Module* server = ServerInstance->Modules->Find("m_spanningtree.so");
- ServerInstance->Modules->SetPriority(this, I_OnPostConnect, PRIORITY_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));
+ ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "SSL error: " + std::string(str, len - 1));
//
// XXX: Remove this line, it causes valgrind warnings...
projects / user / henk / code / inspircd.git / blobdiff