]> git.netwichtig.de Git - user/henk/code/inspircd.git/blobdiff - src/modules/extra/m_ssl_openssl.cpp
Remove the default value in ConfigTag::get{Duration,Float,Int}.
[user/henk/code/inspircd.git] / src / modules / extra / m_ssl_openssl.cpp
index ae5e213b7c119e66b2dd2a611ce38e0c87a3e476..828fcc26a07332e7e39c3b224582659533b38ca3 100644 (file)
 
 #include <openssl/ssl.h>
 #include <openssl/err.h>
+#include <openssl/dh.h>
 
 #ifdef _WIN32
 # pragma comment(lib, "ssleay32.lib")
 # pragma comment(lib, "libeay32.lib")
 #endif
 
-#if ((OPENSSL_VERSION_NUMBER >= 0x10000000L) && (!(defined(OPENSSL_NO_ECDH))))
-// OpenSSL 0.9.8 includes some ECC support, but it's unfinished. Enable only for 1.0.0 and later.
-#define INSPIRCD_OPENSSL_ENABLE_ECDH
-#endif
-
-// BIO is opaque in OpenSSL 1.1 but the access API does not exist in 1.0 and older.
+// Compatibility layer to allow OpenSSL 1.0 to use the 1.1 API.
 #if ((defined LIBRESSL_VERSION_NUMBER) || (OPENSSL_VERSION_NUMBER < 0x10100000L))
+
+// BIO is opaque in OpenSSL 1.1 but the access API does not exist in 1.0.
 # define BIO_get_data(BIO) BIO->ptr
 # define BIO_set_data(BIO, VALUE) BIO->ptr = VALUE;
 # define BIO_set_init(BIO, VALUE) BIO->init = VALUE;
+
+// These functions have been renamed in OpenSSL 1.1.
+# define OpenSSL_version SSLeay_version
+# define X509_getm_notAfter X509_get_notAfter
+# define X509_getm_notBefore X509_get_notBefore
+# define OPENSSL_init_ssl(OPTIONS, SETTINGS) \
+       SSL_library_init(); \
+       SSL_load_error_strings();
+
+// These macros have been renamed in OpenSSL 1.1.
+# define OPENSSL_VERSION SSLEAY_VERSION
+
 #else
 # define INSPIRCD_OPENSSL_OPAQUE_BIO
 #endif
@@ -130,7 +140,7 @@ namespace OpenSSL
                {
                        // Sane default options for OpenSSL see https://www.openssl.org/docs/ssl/SSL_CTX_set_options.html
                        // and when choosing a cipher, use the server's preferences instead of the client preferences.
-                       long opts = SSL_OP_NO_SSLv2 | SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION | SSL_OP_CIPHER_SERVER_PREFERENCE | SSL_OP_SINGLE_DH_USE;
+                       long opts = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION | SSL_OP_CIPHER_SERVER_PREFERENCE | SSL_OP_SINGLE_DH_USE;
                        // Only turn options on if they exist
 #ifdef SSL_OP_SINGLE_ECDH_USE
                        opts |= SSL_OP_SINGLE_ECDH_USE;
@@ -162,7 +172,7 @@ namespace OpenSSL
                        return (SSL_CTX_set_tmp_dh(ctx, dh.get()) >= 0);
                }
 
-#ifdef INSPIRCD_OPENSSL_ENABLE_ECDH
+#ifndef OPENSSL_NO_ECDH
                void SetECDH(const std::string& curvename)
                {
                        int nid = OBJ_sn2nid(curvename.c_str());
@@ -205,6 +215,45 @@ namespace OpenSSL
                        return SSL_CTX_load_verify_locations(ctx, filename.c_str(), 0);
                }
 
+               void SetCRL(const std::string& crlfile, const std::string& crlpath, const std::string& crlmode)
+               {
+                       if (crlfile.empty() && crlpath.empty())
+                               return;
+
+                       /* Set CRL mode */
+                       unsigned long crlflags = X509_V_FLAG_CRL_CHECK;
+                       if (crlmode == "chain")
+                       {
+                               crlflags |= X509_V_FLAG_CRL_CHECK_ALL;
+                       }
+                       else if (crlmode != "leaf")
+                       {
+                               throw ModuleException("Unknown mode '" + crlmode + "'; expected either 'chain' (default) or 'leaf'");
+                       }
+
+                       /* Load CRL files */
+                       X509_STORE* store = SSL_CTX_get_cert_store(ctx);
+                       if (!store)
+                       {
+                               throw ModuleException("Unable to get X509_STORE from SSL context; this should never happen");
+                       }
+                       ERR_clear_error();
+                       if (!X509_STORE_load_locations(store,
+                               crlfile.empty() ? NULL : crlfile.c_str(),
+                               crlpath.empty() ? NULL : crlpath.c_str()))
+                       {
+                               int err = ERR_get_error();
+                               throw ModuleException("Unable to load CRL file '" + crlfile + "' or CRL path '" + crlpath + "': '" + (err ? ERR_error_string(err, NULL) : "unknown") + "'");
+                       }
+
+                       /* Set CRL mode */
+                       if (X509_STORE_set_flags(store, crlflags) != 1)
+                       {
+                               throw ModuleException("Unable to set X509 CRL flags");
+                       }
+               }
+
+
                long GetDefaultContextOptions() const
                {
                        return ctx_options;
@@ -285,15 +334,14 @@ namespace OpenSSL
                 */
                void SetContextOptions(const std::string& ctxname, ConfigTag* tag, Context& context)
                {
-                       long setoptions = tag->getInt(ctxname + "setoptions");
-                       long clearoptions = tag->getInt(ctxname + "clearoptions");
+                       long setoptions = tag->getInt(ctxname + "setoptions", 0);
+                       long clearoptions = tag->getInt(ctxname + "clearoptions", 0);
 #ifdef SSL_OP_NO_COMPRESSION
                        if (!tag->getBool("compression", false)) // Disable compression by default
                                setoptions |= SSL_OP_NO_COMPRESSION;
 #endif
-                       if (!tag->getBool("sslv3", false)) // Disable SSLv3 by default
-                               setoptions |= SSL_OP_NO_SSLv3;
-                       if (!tag->getBool("tlsv1", true))
+                       // Disable TLSv1.0 by default.
+                       if (!tag->getBool("tlsv1", false))
                                setoptions |= SSL_OP_NO_TLSv1;
 
                        if (!setoptions && !clearoptions)
@@ -331,7 +379,7 @@ namespace OpenSSL
                                }
                        }
 
-#ifdef INSPIRCD_OPENSSL_ENABLE_ECDH
+#ifndef OPENSSL_NO_ECDH
                        std::string curvename = tag->getString("ecdhcurve", "prime256v1");
                        if (!curvename.empty())
                                ctx.SetECDH(curvename);
@@ -365,6 +413,12 @@ namespace OpenSSL
                                ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "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", filename.c_str(), lasterr.c_str());
                        }
 
+                       // Load the CRLs.
+                       std::string crlfile  = tag->getString("crlfile");
+                       std::string crlpath  = tag->getString("crlpath");
+                       std::string crlmode  = tag->getString("crlmode", "chain");
+                       ctx.SetCRL(crlfile, crlpath, crlmode);
+
                        clictx.SetVerifyCert();
                        if (tag->getBool("requestclientcert", true))
                                ctx.SetVerifyCert();
@@ -567,7 +621,7 @@ class OpenSSLIOHook : public SSLIOHook
                        certinfo->fingerprint = BinToHex(md, n);
                }
 
-               if ((ASN1_UTCTIME_cmp_time_t(X509_get_notAfter(cert), ServerInstance->Time()) == -1) || (ASN1_UTCTIME_cmp_time_t(X509_get_notBefore(cert), ServerInstance->Time()) == 0))
+               if ((ASN1_UTCTIME_cmp_time_t(X509_getm_notAfter(cert), ServerInstance->Time()) == -1) || (ASN1_UTCTIME_cmp_time_t(X509_getm_notBefore(cert), ServerInstance->Time()) == 0))
                {
                        certinfo->error = "Not activated, or expired certificate";
                }
@@ -945,8 +999,7 @@ class ModuleSSLOpenSSL : public Module
        ModuleSSLOpenSSL()
        {
                // Initialize OpenSSL
-               SSL_library_init();
-               SSL_load_error_strings();
+               OPENSSL_init_ssl(0, NULL);
 #ifdef INSPIRCD_OPENSSL_OPAQUE_BIO
                biomethods = OpenSSL::BIOMethod::alloc();
        }
@@ -959,7 +1012,7 @@ class ModuleSSLOpenSSL : public Module
 
        void init() CXX11_OVERRIDE
        {
-               ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "OpenSSL lib version \"%s\" module was compiled for \"" OPENSSL_VERSION_TEXT "\"", SSLeay_version(SSLEAY_VERSION));
+               ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "OpenSSL lib version \"%s\" module was compiled for \"" OPENSSL_VERSION_TEXT "\"", OpenSSL_version(OPENSSL_VERSION));
 
                // Register application specific data
                char exdatastr[] = "inspircd";