]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/modules/extra/m_ssl_openssl.cpp
Change Windows libraries to be dynamically linked
[user/henk/code/inspircd.git] / src / modules / extra / m_ssl_openssl.cpp
index 7cae1a3446dc799fe0f4573606a20aa2ddc73f36..60c90988a7aed04b4d87e67795f1d6e341b2f6dc 100644 (file)
@@ -1,29 +1,43 @@
-/*       +------------------------------------+
- *       | Inspire Internet Relay Chat Daemon |
- *       +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
  *
- *  InspIRCd: (C) 2002-2010 InspIRCd Development Team
- * See: http://wiki.inspircd.org/Credits
+ *   Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ *   Copyright (C) 2008 Pippijn van Steenhoven <pip88nl@gmail.com>
+ *   Copyright (C) 2006-2008 Craig Edwards <craigedwards@brainbox.cc>
+ *   Copyright (C) 2008 Thomas Stagner <aquanight@inspircd.org>
+ *   Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ *   Copyright (C) 2006 Oliver Lupton <oliverlupton@gmail.com>
  *
- * This program is free but copyrighted software; see
- *            the file COPYING for details.
+ * This file is part of InspIRCd.  InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
  *
- * ---------------------------------------------------
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+ /* HACK: This prevents OpenSSL on OS X 10.7 and later from spewing deprecation
+  * warnings for every single function call. As far as I (SaberUK) know, Apple
+  * have no plans to remove OpenSSL so this warning just causes needless spam.
+  */
+#ifdef __APPLE__
+# define __AVAILABILITYMACROS__
+# define DEPRECATED_IN_MAC_OS_X_VERSION_10_7_AND_LATER
+#endif
 #include "inspircd.h"
 #include <openssl/ssl.h>
 #include <openssl/err.h>
 #include "ssl.h"
 
-#ifdef WINDOWS
-# pragma comment(lib, "libcrypto.lib")
-# pragma comment(lib, "libssl.lib")
-# pragma comment(lib, "user32.lib")
-# pragma comment(lib, "advapi32.lib")
-# pragma comment(lib, "libgcc.lib")
-# pragma comment(lib, "libmingwex.lib")
-# pragma comment(lib, "gdi32.lib")
+#ifdef _WIN32
+# pragma comment(lib, "ssleay32.lib")
+# pragma comment(lib, "libeay32.lib")
 # undef MAX_DESCRIPTORS
 # define MAX_DESCRIPTORS 10000
 #endif
@@ -57,7 +71,6 @@ public:
        issl_status status;
        reference<ssl_cert> cert;
 
-       int fd;
        bool outbound;
        bool data_to_write;
 
@@ -84,14 +97,11 @@ static int OnVerify(int preverify_ok, X509_STORE_CTX *ctx)
 
 class ModuleSSLOpenSSL : public Module
 {
-       int inbufsize;
        issl_session* sessions;
 
        SSL_CTX* ctx;
        SSL_CTX* clictx;
 
-       char cipher[MAXBUF];
-
        std::string sslports;
        bool use_sha;
 
@@ -102,9 +112,6 @@ class ModuleSSLOpenSSL : public Module
        {
                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();
@@ -120,6 +127,9 @@ class ModuleSSLOpenSSL : public Module
 
                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);
+
+               const unsigned char session_id[] = "inspircd";
+               SSL_CTX_set_session_id_context(ctx, session_id, sizeof(session_id) - 1);
        }
 
        void init()
@@ -145,23 +155,37 @@ class ModuleSSLOpenSSL : public Module
                sslports.clear();
 
                ConfigTag* Conf = ServerInstance->Config->ConfValue("openssl");
-               
+
                if (Conf->getBool("showports", true))
                {
+                       sslports = Conf->getString("advertisedports");
+                       if (!sslports.empty())
+                               return;
+
                        for (size_t i = 0; i < ServerInstance->ports.size(); i++)
                        {
                                ListenSocket* port = ServerInstance->ports[i];
                                if (port->bind_tag->getString("ssl") != "openssl")
                                        continue;
 
-                               std::string portid = port->bind_desc;
+                               const 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->bind_tag->getString("type", "clients") == "clients" && port->bind_addr != "127.0.0.1")
-                                       sslports.append(portid).append(";");
+                               {
+                                       /*
+                                        * Found an SSL port for clients that is not bound to 127.0.0.1 and handled by us, display
+                                        * the IP:port in ISUPPORT.
+                                        *
+                                        * We used to advertise all ports seperated by a ';' char that matched the above criteria,
+                                        * but this resulted in too long ISUPPORT lines if there were lots of ports to be displayed.
+                                        * To solve this by default we now only display the first IP:port found and let the user
+                                        * configure the exact value for the 005 token, if necessary.
+                                        */
+                                       sslports = portid;
+                                       break;
+                               }
                        }
-
-                       if (!sslports.empty())
-                               sslports.erase(sslports.end() - 1);
                }
        }
 
@@ -178,15 +202,25 @@ class ModuleSSLOpenSSL : public Module
 
                ConfigTag* conf = ServerInstance->Config->ConfValue("openssl");
 
-               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");
+               cafile   = conf->getString("cafile", CONFIG_PATH "/ca.pem");
+               certfile = conf->getString("certfile", CONFIG_PATH "/cert.pem");
+               keyfile  = conf->getString("keyfile", CONFIG_PATH "/key.pem");
+               dhfile   = conf->getString("dhfile", CONFIG_PATH "/dhparams.pem");
                std::string hash = conf->getString("hash", "md5");
                if (hash != "sha1" && hash != "md5")
                        throw ModuleException("Unknown hash type " + hash);
                use_sha = (hash == "sha1");
 
+               std::string ciphers = conf->getString("ciphers", "");
+
+               if (!ciphers.empty())
+               {
+                       if ((!SSL_CTX_set_cipher_list(ctx, ciphers.c_str())) || (!SSL_CTX_set_cipher_list(clictx, ciphers.c_str())))
+                       {
+                               ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Can't set cipher list to %s.", ciphers.c_str());
+                               ERR_print_errors_cb(error_callback, this);
+                       }
+               }
 
                /* Load our keys and certificates
                 * NOTE: OpenSSL's error logging API sucks, don't blame us for this clusterfuck.
@@ -206,11 +240,15 @@ class ModuleSSLOpenSSL : public Module
                /* 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));
+                       ServerInstance->Logs->Log("m_ssl_openssl",DEFAULT, "m_ssl_openssl.so: Can't read CA list from %s. This is only a problem if you want to verify client certificates, otherwise it's safe to ignore this message. Error: %s", cafile.c_str(), strerror(errno));
                        ERR_print_errors_cb(error_callback, this);
                }
 
+#ifdef _WIN32
+               BIO* dhpfile = BIO_new_file(dhfile.c_str(), "r");
+#else
                FILE* dhpfile = fopen(dhfile.c_str(), "r");
+#endif
                DH* ret;
 
                if (dhpfile == NULL)
@@ -220,15 +258,23 @@ class ModuleSSLOpenSSL : public Module
                }
                else
                {
+#ifdef _WIN32
+                       ret = PEM_read_bio_DHparams(dhpfile, NULL, NULL, NULL);
+                       BIO_free(dhpfile);
+#else
                        ret = PEM_read_DHparams(dhpfile, NULL, NULL, NULL);
+#endif
                        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);
                        }
+                       DH_free(ret);
                }
 
+#ifndef _WIN32
                fclose(dhpfile);
+#endif
        }
 
        void On005Numeric(std::string &output)
@@ -251,8 +297,10 @@ class ModuleSSLOpenSSL : public Module
                        if (sessions[user->eh.GetFd()].sess)
                        {
                                if (!sessions[user->eh.GetFd()].cert->fingerprint.empty())
-                                       user->WriteServ("NOTICE %s :*** You are connected using SSL fingerprint %s",
-                                               user->nick.c_str(), sessions[user->eh.GetFd()].cert->fingerprint.c_str());
+                                       user->WriteServ("NOTICE %s :*** You are connected using SSL cipher \"%s\""
+                                               " and your SSL fingerprint is %s", user->nick.c_str(), SSL_get_cipher(sessions[user->eh.GetFd()].sess), sessions[user->eh.GetFd()].cert->fingerprint.c_str());
+                               else
+                                       user->WriteServ("NOTICE %s :*** You are connected using SSL cipher \"%s\"", user->nick.c_str(), SSL_get_cipher(sessions[user->eh.GetFd()].sess));
                        }
                }
        }
@@ -295,10 +343,10 @@ class ModuleSSLOpenSSL : public Module
 
                issl_session* session = &sessions[fd];
 
-               session->fd = fd;
                session->sess = SSL_new(ctx);
                session->status = ISSL_NONE;
                session->outbound = false;
+               session->cert = NULL;
 
                if (session->sess == NULL)
                        return;
@@ -321,7 +369,6 @@ class ModuleSSLOpenSSL : public Module
 
                issl_session* session = &sessions[fd];
 
-               session->fd = fd;
                session->sess = SSL_new(clictx);
                session->status = ISSL_NONE;
                session->outbound = true;
@@ -394,6 +441,7 @@ class ModuleSSLOpenSSL : public Module
                        {
                                // Client closed connection.
                                CloseSession(session);
+                               user->SetError("Connection closed");
                                return -1;
                        }
                        else if (ret < 0)
@@ -557,7 +605,7 @@ class ModuleSSLOpenSSL : public Module
 
        void VerifyCertificate(issl_session* session, StreamSocket* user)
        {
-               if (!session->sess || !user || session->cert)
+               if (!session->sess || !user)
                        return;
 
                X509* cert;
@@ -577,7 +625,7 @@ class ModuleSSLOpenSSL : public Module
 
                certinfo->invalid = (SSL_get_verify_result(session->sess) != X509_V_OK);
 
-               if (SelfSigned)
+               if (!SelfSigned)
                {
                        certinfo->unknownsigner = false;
                        certinfo->trusted = true;
@@ -588,8 +636,11 @@ class ModuleSSLOpenSSL : public Module
                        certinfo->trusted = false;
                }
 
-               certinfo->dn = X509_NAME_oneline(X509_get_subject_name(cert),0,0);
-               certinfo->issuer = X509_NAME_oneline(X509_get_issuer_name(cert),0,0);
+               char buf[512];
+               X509_NAME_oneline(X509_get_subject_name(cert), buf, sizeof(buf));
+               certinfo->dn = buf;
+               X509_NAME_oneline(X509_get_issuer_name(cert), buf, sizeof(buf));
+               certinfo->issuer = buf;
 
                if (!X509_digest(cert, digest, md, &n))
                {