Enable ASLR and NX options.
Signed-off-by: Frediano Ziglio <fziglio@xxxxxxxxxx>
---
src/Makefile.am | 21 +++++++++++++++++++--
1 file changed, 19 insertions(+), 2 deletions(-)
diff --git a/src/Makefile.am b/src/Makefile.am
index 3a5d90d..4dbc03f 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -131,6 +131,20 @@ COMMON_CFLAGS = \
$(WARN_CFLAGS) \
$(NULL)
+if OS_WIN32
+# binutils does not take into account entry point when
+# -pie is used so we need to provide it manually
+# ENTRY_PREFIX is empty for x86_64, underscore ("_") otherwise
+ENTRY_PREFIX := $(if $(filter x86_64,$(host_cpu)),,_)
+
+# --dynamicbase to enable ASLR protection
+# --nxcompat is to enable NX protection
+# -pie as --dynamicbase requires relocations
+LDFLAGS_SECURITY_COMMON = -Wl,--dynamicbase,-pie,--nxcompat
+LDFLAGS_SECURITY_GUI = $(LDFLAGS_SECURITY_COMMON) -Wl,-e,$(ENTRY_PREFIX)WinMainCRTStartup -mwindows
+LDFLAGS_SECURITY_CUI = $(LDFLAGS_SECURITY_COMMON) -Wl,-e,$(ENTRY_PREFIX)mainCRTStartup -mconsole
+endif
+
libvirt_viewer_util_la_LIBADD = \
$(GLIB2_LIBS) \
$(GTK_LIBS) \
@@ -171,6 +185,9 @@ virt_viewer_LDADD = \
libvirt-viewer-util.la \
libvirt-viewer.la \
$(NULL)
+if OS_WIN32
+virt_viewer_LDFLAGS += $(LDFLAGS_SECURITY_GUI)
+endif
endif
@@ -194,7 +211,7 @@ remote_viewer_LDADD = \
$(NULL)
if OS_WIN32
-remote_viewer_LDFLAGS += -Wl,--subsystem,windows
+remote_viewer_LDFLAGS += $(LDFLAGS_SECURITY_GUI)
endif
VIRT_VIEWER_RES = virt-viewer.rc virt-viewer.manifest
@@ -205,7 +222,7 @@ EXTRA_DIST += $(VIRT_VIEWER_RES)
if OS_WIN32
bin_PROGRAMS += windows-cmdline-wrapper
windows_cmdline_wrapper_SOURCES = windows-cmdline-wrapper.c
-windows_cmdline_wrapper_LDFLAGS = -lpsapi
+windows_cmdline_wrapper_LDFLAGS = -lpsapi $(LDFLAGS_SECURITY_CUI)
virt-viewer_rc.$(OBJEXT): $(VIRT_VIEWER_RES) $(ICONDIR)/virt-viewer.ico
$(AM_V_GEN)$(WINDRES) \
--
2.25.4
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