From 4b0ef132badc7c0feb0b064c9162d7244d6da655 Mon Sep 17 00:00:00 2001
From: Nokis Mavrogiannopoulos
Date: Wed, 20 Feb 2008 19:50:09 +0000
Subject: added option to disable srp (for distributions that disable it in
 gnutls)

---
 configure.ac        | 12 +++++++++++-
 src/gnutls_config.c |  7 +++++++
 src/gnutls_hooks.c  |  6 ++++++
 src/mod_gnutls.c    |  2 ++
 4 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index 0cdcdd9..28001b3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 dnl 
-AC_INIT(mod_gnutls, 0.5.0-alpha)
+AC_INIT(mod_gnutls, 0.5.1)
 OOO_CONFIG_NICE(config.nice)
 MOD_GNUTLS_VERSION=AC_PACKAGE_VERSION
 AC_PREREQ(2.53)
@@ -37,6 +37,16 @@ AM_PATH_LIBGNUTLS_EXTRA($MIN_TLS_VERSION,,
 ***
 ]]))
 
+AC_ARG_ENABLE(srp,
+       AS_HELP_STRING([--disable-srp],
+               [unconditionally disable the SRP functionality]),
+       use_srp=$enableval, use_srp=yes)
+if test "$use_srp" != "no"; then
+	AC_DEFINE_UNQUOTED(ENABLE_SRP, 1, [whether to enable SRP])
+fi
+AC_MSG_CHECKING([whether to enable SRP functionality])
+AC_MSG_RESULT($use_srp)
+
 dnl CHECK_LUA()
 
 have_apr_memcache=0
diff --git a/src/gnutls_config.c b/src/gnutls_config.c
index f08512e..e290d90 100644
--- a/src/gnutls_config.c
+++ b/src/gnutls_config.c
@@ -281,6 +281,8 @@ const char *mgs_set_pgpkey_file(cmd_parms * parms, void *dummy,
 }
 
 
+#ifdef ENABLE_SRP
+
 const char *mgs_set_srp_tpasswd_file(cmd_parms * parms, void *dummy,
 				     const char *arg)
 {
@@ -307,6 +309,8 @@ const char *mgs_set_srp_tpasswd_conf_file(cmd_parms * parms, void *dummy,
     return NULL;
 }
 
+#endif
+
 const char *mgs_set_cache(cmd_parms * parms, void *dummy,
 			  const char *type, const char *arg)
 {
@@ -543,6 +547,7 @@ void *mgs_config_server_create(apr_pool_t * p, server_rec * s)
 			    ": (%d) %s", ret, gnutls_strerror(ret));
     }
 
+#ifdef ENABLE_SRP
     ret = gnutls_srp_allocate_server_credentials(&sc->srp_creds);
     if (ret < 0) {
 	return apr_psprintf(p, "GnuTLS: Failed to initialize"
@@ -551,6 +556,8 @@ void *mgs_config_server_create(apr_pool_t * p, server_rec * s)
 
     sc->srp_tpasswd_conf_file = NULL;
     sc->srp_tpasswd_file = NULL;
+#endif
+
     sc->privkey_x509 = NULL;
     memset( sc->certs_x509, 0, sizeof(sc->certs_x509));
     sc->certs_x509_num = 0;
diff --git a/src/gnutls_hooks.c b/src/gnutls_hooks.c
index 26917b8..ee3c2db 100644
--- a/src/gnutls_hooks.c
+++ b/src/gnutls_hooks.c
@@ -131,11 +131,13 @@ static int mgs_select_virtual_server_cb(gnutls_session_t session)
 
     gnutls_credentials_set(session, GNUTLS_CRD_ANON, ctxt->sc->anon_creds);
 
+#ifdef ENABLE_SRP
     if (ctxt->sc->srp_tpasswd_conf_file != NULL
 	&& ctxt->sc->srp_tpasswd_file != NULL) {
 	gnutls_credentials_set(session, GNUTLS_CRD_SRP,
 			       ctxt->sc->srp_creds);
     }
+#endif
 
     /* update the priorities - to avoid negotiating a ciphersuite that is not
      * enabled on this virtual server. Note that here we ignore the version
@@ -379,6 +381,7 @@ mgs_hook_post_config(apr_pool_t * p, apr_pool_t * plog,
 	    gnutls_certificate_server_set_retrieve_function(sc->certs,
 							    cert_retrieve_fn);
 
+#ifdef ENABLE_SRP
 	    if (sc->srp_tpasswd_conf_file != NULL
 		&& sc->srp_tpasswd_file != NULL) {
 		rv = gnutls_srp_set_server_credentials_file(sc->srp_creds,
@@ -395,6 +398,7 @@ mgs_hook_post_config(apr_pool_t * p, apr_pool_t * plog,
 		    exit(-1);
 		}
 	    }
+#endif
 
 	    if (sc->certs_x509[0] == NULL
 		&& sc->enabled == GNUTLS_ENABLED_TRUE) {
@@ -722,8 +726,10 @@ int mgs_hook_fixups(request_rec * r)
 		   gnutls_compression_get_name(gnutls_compression_get
 					       (ctxt->session)));
 
+#ifdef ENABLE_SRP
     apr_table_setn(env, "SSL_SRP_USER",
 		   gnutls_srp_server_get_username(ctxt->session));
+#endif
 
     if (apr_table_get(env, "SSL_CLIENT_VERIFY") == NULL)
 	apr_table_setn(env, "SSL_CLIENT_VERIFY", "NONE");
diff --git a/src/mod_gnutls.c b/src/mod_gnutls.c
index 014bfc8..5207641 100644
--- a/src/mod_gnutls.c
+++ b/src/mod_gnutls.c
@@ -104,6 +104,7 @@ static const command_rec mgs_config_cmds[] = {
                   NULL,
                   RSRC_CONF,
                   "SSL Server PGP Private key file"),
+#ifdef ENABLE_SRP
     AP_INIT_TAKE1("GnuTLSSRPPasswdFile", mgs_set_srp_tpasswd_file,
                   NULL,
                   RSRC_CONF,
@@ -112,6 +113,7 @@ static const command_rec mgs_config_cmds[] = {
                   NULL,
                   RSRC_CONF,
                   "SSL Server SRP Parameters file"),
+#endif
     AP_INIT_TAKE1("GnuTLSCacheTimeout", mgs_set_cache_timeout,
                   NULL,
                   RSRC_CONF,
-- 
cgit