X-Git-Url: https://git.saurik.com/apple/security.git/blobdiff_plain/8e292c995b66f335f19def2bcdd227168935ede0..313fa17b58b78d3c26fb986be9e8fce975cec88c:/libsecurity_codesigning/gke/gkunpack.cpp?ds=inline

diff --git a/libsecurity_codesigning/gke/gkunpack.cpp b/libsecurity_codesigning/gke/gkunpack.cpp
new file mode 100644
index 00000000..11e16cad
--- /dev/null
+++ b/libsecurity_codesigning/gke/gkunpack.cpp
@@ -0,0 +1,31 @@
+//
+//  gkunpack - an ad-hoc tool for unpacking certain binary data from a detached code signature
+//
+//	gkunpack <detached_signature_data >prescreen_filter_data
+//
+#include <security_utilities/macho++.h>
+#include <security_codesigning/codedirectory.h>
+#include <security_codesigning/sigblob.h>
+
+using namespace CodeSigning;
+
+
+int main(int argc, const char * argv[])
+{
+	if (const EmbeddedSignatureBlob *top = (const EmbeddedSignatureBlob *)BlobCore::readBlob(stdin)) {
+		if (top->magic() == DetachedSignatureBlob::typeMagic) {	// multiple architectures - pick the native one
+			Architecture local = Architecture::local();
+			const EmbeddedSignatureBlob *sig = EmbeddedSignatureBlob::specific(top->find(local.cpuType()));
+			if (!sig)
+				sig = EmbeddedSignatureBlob::specific(top->find(local.cpuType() & ~CPU_ARCH_MASK));
+			top = sig;
+		}
+		if (top)
+			if (const CodeDirectory *cd = top->find<const CodeDirectory>(cdCodeDirectorySlot)) {
+				printf("%s\n", cd->screeningCode().c_str());
+				exit(0);
+			}
+	}
+	fprintf(stderr, "Invalid signature structure\n");
+	exit(1);
+}