info api: pe_get_image_subsystem(): initial implementation.

1 files changed, 47 insertions, 0 deletions

diff --git a/src/logic/pe_get_image_subsystem.c b/src/logic/pe_get_image_subsystem.c
new file mode 100644
index 0000000..3ccf0e6
--- /dev/null
+++ b/src/logic/pe_get_image_subsystem.c
@@ -0,0 +1,47 @@
+/***************************************************************/
+/*  perk: PE Resource Kit                                      */
+/*  Copyright (C) 2015--2016  Z. Gilboa                        */
+/*  Released under GPLv2 and GPLv3; see COPYING.PERK.          */
+/***************************************************************/
+
+#include <string.h>
+
+#include <perk/perk.h>
+#include <perk/perk_meta.h>
+
+static const char const * pe_subsystem_str[0x10] = {
+	[PE_IMAGE_SUBSYSTEM_UNKNOWN]                  = "unknown",
+	[PE_IMAGE_SUBSYSTEM_NATIVE]                   = "native",
+	[PE_IMAGE_SUBSYSTEM_WINDOWS_GUI]              = "windows",
+	[PE_IMAGE_SUBSYSTEM_WINDOWS_CUI]              = "console",
+	[PE_IMAGE_SUBSYSTEM_POSIX_CUI]                = "posix",
+	[PE_IMAGE_SUBSYSTEM_WINDOWS_CE_GUI]           = "wince",
+	[PE_IMAGE_SUBSYSTEM_EFI_APPLICATION]          = "efi_app",
+	[PE_IMAGE_SUBSYSTEM_EFI_BOOT_SERVICE_DRIVER]  = "efi_driver",
+	[PE_IMAGE_SUBSYSTEM_EFI_ROM]                  = "efi_rom",
+	[PE_IMAGE_SUBSYSTEM_XBOX]                     = "xbox"
+};
+
+int pe_get_image_subsystem(const struct pe_image_meta * m, struct pe_info_string * infostr)
+{
+	int subsystem;
+
+	if (m->opt.img.subsystem >= 0x10)
+		subsystem = -1;
+
+	else if (!pe_subsystem_str[m->opt.img.subsystem])
+		subsystem = -1;
+
+	else
+		subsystem = m->opt.img.subsystem;
+
+	if ((subsystem < 0) && infostr) {
+		strcpy(infostr->buffer,"INVALID");
+		return subsystem;
+	}
+
+	if (infostr)
+		strcpy(infostr->buffer,pe_subsystem_str[subsystem]);
+
+	return subsystem;
+}