1 files changed, 27 insertions, 0 deletions
diff --git a/src/c4groupheader.h b/src/c4groupheader.h
new file mode 100644
index 0000000..1faa912
--- /dev/null
+++ b/src/c4groupheader.h
@@ -0,0 +1,27 @@
+#pragma once
+#include <stdint.h>
+#include <stdbool.h>
+
+#define C4GroupMaxMaker 30
+#define C4GroupMaxPassword 30
+
+#define C4GroupId "RedWolf Design GrpFolder"
+#define C4GroupOfficial 1234567
+
+typedef struct {
+	char id[25];
+	uint8_t Reserved1[3];
+	int32_t Ver1, Ver2;
+	int32_t Entries;
+	char Maker[C4GroupMaxMaker + 2];
+	char Password[C4GroupMaxPassword + 2]; // also reserved
+	int32_t Creation;
+	int32_t Official;
+	uint8_t Reserved2[92];
+} __attribute__((__packed__)) C4GroupHeader;
+
+void C4GroupHeader_init(C4GroupHeader* const this);
+void C4GroupHeader_setMaker(C4GroupHeader* const this, const char* const maker);
+bool C4GroupHeader_isOfficial(const C4GroupHeader* const this);
+void C4GroupHeader_setOfficial(C4GroupHeader* const this, bool const official);
+void C4GroupHeader_setCreation(C4GroupHeader* const this, int32_t const creation);