1 files changed, 69 insertions, 0 deletions
diff --git a/lib/util/util_str_hex.c b/lib/util/util_str_hex.c
new file mode 100644
index 0000000..553fb30
--- /dev/null
+++ b/lib/util/util_str_hex.c
@@ -0,0 +1,69 @@
+#include "replace.h"
+#include "util_str_hex.h"
+#include "lib/util/data_blob.h"
+#include "librpc/gen_ndr/misc.h"
+
+static bool hex_uint16(const char *in, uint16_t *out)
+{
+	uint8_t hi=0, lo=0;
+	bool ok = hex_byte(in, &hi) && hex_byte(in+2, &lo);
+	*out = (((uint16_t)hi)<<8) + lo;
+	return ok;
+}
+
+bool hex_uint32(const char *in, uint32_t *out)
+{
+	uint16_t hi=0, lo=0;
+	bool ok = hex_uint16(in, &hi) && hex_uint16(in+4, &lo);
+	*out = (((uint32_t)hi)<<16) + lo;
+	return ok;
+}
+
+bool parse_guid_string(const char *s, struct GUID *guid)
+{
+	bool ok;
+	int i;
+	/* "e12b56b6-0a95-11d1-adbb-00c04fd8d5cd"
+                |     |    |    |    |
+                |     |    |    |    \ node[6]
+                |     |    |    \_____ clock_seq[2]
+                |     |    \__________ time_hi_and_version
+		|     \_______________ time_mid
+		\_____________________ time_low
+	*/
+
+	ok = hex_uint32(s, &guid->time_low);
+	if (!ok || (s[8] != '-')) {
+		return false;
+	}
+	s += 9;
+
+	ok = hex_uint16(s, &guid->time_mid);
+	if (!ok || (s[4] != '-')) {
+		return false;
+	}
+	s += 5;
+
+	ok = hex_uint16(s, &guid->time_hi_and_version);
+	if (!ok || (s[4] != '-')) {
+		return false;
+	}
+	s += 5;
+
+	ok = hex_byte(s, &guid->clock_seq[0]) &&
+		hex_byte(s+2, &guid->clock_seq[1]);
+	if (!ok || (s[4] != '-')) {
+		return false;
+	}
+	s += 5;
+
+	for (i = 0; i < 6; i++) {
+		ok = hex_byte(s, &guid->node[i]);
+		if (!ok) {
+			return false;
+		}
+		s += 2;
+	}
+
+	return true;
+}