Fix build with LibreSSL / Detect missing RAND_egd. Patch from Bernard Spil.

configure

@@ -3874,6 +3874,48 @@ if test "x$ac_cv_lib_nsl_inet_ntoa" = xyes; then :
 		INETLIB="-lnsl"
 fi
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for RAND_egd in -lcrypto" >&5
+$as_echo_n "checking for RAND_egd in -lcrypto... " >&6; }
+if ${ac_cv_lib_crypto_RAND_egd+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lcrypto  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char RAND_egd ();
+int
+main ()
+{
+return RAND_egd ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_crypto_RAND_egd=yes
+else
+  ac_cv_lib_crypto_RAND_egd=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_crypto_RAND_egd" >&5
+$as_echo "$ac_cv_lib_crypto_RAND_egd" >&6; }
+if test "x$ac_cv_lib_crypto_RAND_egd" = xyes; then :
+
+$as_echo "#define HAVE_RAND_EGD 1" >>confdefs.h
+
+fi
+
 
 
 

configure.ac

@@ -93,6 +93,8 @@ AC_CHECK_LIB(socket, socket,
 AC_CHECK_LIB(nsl, inet_ntoa,
 	[IRCDLIBS="$IRCDLIBS-lnsl "
 		INETLIB="-lnsl"])
+AC_CHECK_LIB(crypto, RAND_egd,
+		AC_DEFINE(HAVE_RAND_EGD, 1, [Define if the libcrypto has RAND_egd]))
 
 AC_SUBST(IRCDLIBS)
 AC_SUBST(MKPASSWDLIBS)

include/dynconf.h

@@ -204,7 +204,11 @@ extern MODVAR aConfiguration iConf;
 #define SHOWCONNECTINFO			iConf.show_connect_info
 #define OPER_ONLY_STATS			iConf.oper_only_stats
 #define ANTI_SPAM_QUIT_MSG_TIME		iConf.anti_spam_quit_message_time
+#ifdef HAVE_RAND_EGD
 #define USE_EGD				iConf.use_egd
+#else
+#define USE_EGD				0
+#endif
 #define EGD_PATH			iConf.egd_path
 
 #define ircnetwork			iConf.network.x_ircnetwork

include/setup.h.in

@@ -109,6 +109,9 @@
 /* Define if you have pstat */
 #undef HAVE_PSTAT
 
+/* Define if the libcrypto has RAND_egd */
+#undef HAVE_RAND_EGD
+
 /* Define if you have setproctitle */
 #undef HAVE_SETPROCTITLE
 

src/random.c

@@ -187,7 +187,7 @@ MEMORYSTATUS mstat;
 
 	/* Grab non-OS specific "random" data */
 #ifdef USE_SSL
- #if OPENSSL_VERSION_NUMBER >= 0x000907000
+ #if OPENSSL_VERSION_NUMBER >= 0x000907000 && defined(HAVE_RAND_EGD)
 	if (EGD_PATH) {
 		n = RAND_query_egd_bytes(EGD_PATH, rdat.egd, sizeof(rdat.egd));
 	}