1 files changed, 49 insertions, 0 deletions
diff --git a/protocols/Tox/src/tox_utils.cpp b/protocols/Tox/src/tox_utils.cpp
new file mode 100644
index 0000000000..093becbce4
--- /dev/null
+++ b/protocols/Tox/src/tox_utils.cpp
@@ -0,0 +1,49 @@
+#include "common.h"
+
+uint8_t *CToxProto::HexToBinString(char *hex_string)
+{
+	// byte is represented by exactly 2 hex digits, so lenth of binary string
+	// is half of that of the hex one. only hex string with even length
+	// valid. the more proper implementation would be to check if strlen(hex_string)
+	// is odd and return error code if it is. we assume strlen is even. if it's not
+	// then the last byte just won't be written in 'ret'.
+	size_t i, len = (strlen(hex_string) / 2);
+	uint8_t *ret = (uint8_t*)mir_alloc(len);
+	char *pos = hex_string;
+
+	for (i = 0; i < len; i++, pos += 2)
+	{
+		sscanf(pos, "%2hhx", &ret[i]);
+	}
+
+	return ret;
+}
+
+char *CToxProto::BinToHexString(uint8_t *bin_string)
+{
+	uint32_t i, delta = 0, pos_extra, sum_extra = 0;
+	char *ret = (char*)mir_alloc(TOX_FRIEND_ADDRESS_SIZE);
+
+	for (i = 0; i < TOX_FRIEND_ADDRESS_SIZE; i++)
+	{
+		sprintf(&ret[2 * i + delta], "%02hhX", bin_string[i]);
+
+		if ((i + 1) == TOX_CLIENT_ID_SIZE)
+			pos_extra = 2 * (i + 1) + delta;
+
+		if (i >= TOX_CLIENT_ID_SIZE)
+			sum_extra |= bin_string[i];
+
+		/*if (!((i + 1) % FRADDR_TOSTR_CHUNK_LEN)) {
+			id_str[2 * (i + 1) + delta] = ' ';
+			delta++;
+		}*/
+	}
+
+	ret[2 * i + delta] = 0;
+
+	if (!sum_extra)
+		ret[pos_extra] = 0;
+
+	return ret;
+}
+\ No newline at end of file