ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/package/kernel/asr-wl/asr-hostapd/asr-hostapd-2023-06-22/src/utils/uuid.c b/package/kernel/asr-wl/asr-hostapd/asr-hostapd-2023-06-22/src/utils/uuid.c
new file mode 100644
index 0000000..98e43d0
--- /dev/null
+++ b/package/kernel/asr-wl/asr-hostapd/asr-hostapd-2023-06-22/src/utils/uuid.c
@@ -0,0 +1,96 @@
+/*
+ * Universally Unique IDentifier (UUID)
+ * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "crypto/sha256.h"
+#include "uuid.h"
+
+int uuid_str2bin(const char *str, u8 *bin)
+{
+ const char *pos;
+ u8 *opos;
+
+ pos = str;
+ opos = bin;
+
+ if (hexstr2bin(pos, opos, 4))
+ return -1;
+ pos += 8;
+ opos += 4;
+
+ if (*pos++ != '-' || hexstr2bin(pos, opos, 2))
+ return -1;
+ pos += 4;
+ opos += 2;
+
+ if (*pos++ != '-' || hexstr2bin(pos, opos, 2))
+ return -1;
+ pos += 4;
+ opos += 2;
+
+ if (*pos++ != '-' || hexstr2bin(pos, opos, 2))
+ return -1;
+ pos += 4;
+ opos += 2;
+
+ if (*pos++ != '-' || hexstr2bin(pos, opos, 6))
+ return -1;
+
+ return 0;
+}
+
+
+int uuid_bin2str(const u8 *bin, char *str, size_t max_len)
+{
+ int len;
+ len = os_snprintf(str, max_len, "%02x%02x%02x%02x-%02x%02x-%02x%02x-"
+ "%02x%02x-%02x%02x%02x%02x%02x%02x",
+ bin[0], bin[1], bin[2], bin[3],
+ bin[4], bin[5], bin[6], bin[7],
+ bin[8], bin[9], bin[10], bin[11],
+ bin[12], bin[13], bin[14], bin[15]);
+ if (os_snprintf_error(max_len, len))
+ return -1;
+ return 0;
+}
+
+
+int is_nil_uuid(const u8 *uuid)
+{
+ int i;
+ for (i = 0; i < UUID_LEN; i++)
+ if (uuid[i])
+ return 0;
+ return 1;
+}
+
+
+int uuid_random(u8 *uuid)
+{
+ struct os_time t;
+ u8 hash[SHA256_MAC_LEN];
+
+ /* Use HMAC-SHA256 and timestamp as context to avoid exposing direct
+ * os_get_random() output in the UUID field. */
+ os_get_time(&t);
+ if (os_get_random(uuid, UUID_LEN) < 0 ||
+ hmac_sha256(uuid, UUID_LEN, (const u8 *) &t, sizeof(t), hash) < 0)
+ return -1;
+
+ os_memcpy(uuid, hash, UUID_LEN);
+
+ /* Version: 4 = random */
+ uuid[6] = (4 << 4) | (uuid[6] & 0x0f);
+
+ /* Variant specified in RFC 4122 */
+ uuid[8] = 0x80 | (uuid[8] & 0x3f);
+
+ return 0;
+}