--- /dev/null
+/*
+ * Copyright (c) 2004 Apple Computer, Inc. All rights reserved.
+ *
+ * %Begin-Header%
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, and the entire permission notice in its entirety,
+ * including the disclaimer of warranties.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ * products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
+ * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * %End-Header%
+ */
+
+#include <uuid/uuid.h>
+
+#include <stdint.h>
+#include <string.h>
+
+#include <sys/random.h>
+#include <sys/socket.h>
+#include <sys/systm.h>
+#include <sys/time.h>
+
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <net/if_types.h>
+
+UUID_DEFINE(UUID_NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+
+static void
+read_node(uint8_t *node)
+{
+ struct ifnet *ifp;
+ struct ifaddr *ifa;
+ struct sockaddr_dl *sdl;
+
+ ifnet_head_lock_shared();
+ TAILQ_FOREACH(ifp, &ifnet_head, if_link) {
+ TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
+ sdl = (struct sockaddr_dl *)ifa->ifa_addr;
+ if (sdl && sdl->sdl_family == AF_LINK && sdl->sdl_type == IFT_ETHER) {
+ memcpy(node, LLADDR(sdl), 6);
+ ifnet_head_done();
+ return;
+ }
+ }
+ }
+ ifnet_head_done();
+
+ read_random(node, 6);
+ node[0] |= 0x01;
+}
+
+static uint64_t
+read_time(void)
+{
+ struct timespec tv;
+
+ nanotime(&tv);
+
+ return (tv.tv_sec * 10000000ULL) + (tv.tv_nsec / 100ULL) + 0x01B21DD213814000ULL;
+}
+
+void
+uuid_clear(uuid_t uu)
+{
+ memset(uu, 0, sizeof(uuid_t));
+}
+
+int
+uuid_compare(const uuid_t uu1, const uuid_t uu2)
+{
+ return memcmp(uu1, uu2, sizeof(uuid_t));
+}
+
+void
+uuid_copy(uuid_t dst, const uuid_t src)
+{
+ memcpy(dst, src, sizeof(uuid_t));
+}
+
+void
+uuid_generate_random(uuid_t out)
+{
+ read_random(out, sizeof(uuid_t));
+
+ out[6] = (out[6] & 0x0F) | 0x40;
+ out[8] = (out[8] & 0x3F) | 0x80;
+}
+
+void
+uuid_generate_time(uuid_t out)
+{
+ uint64_t time;
+
+ read_node(&out[10]);
+ read_random(&out[8], 2);
+
+ time = read_time();
+ out[0] = (uint8_t)(time >> 24);
+ out[1] = (uint8_t)(time >> 16);
+ out[2] = (uint8_t)(time >> 8);
+ out[3] = (uint8_t)time;
+ out[4] = (uint8_t)(time >> 40);
+ out[5] = (uint8_t)(time >> 32);
+ out[6] = (uint8_t)(time >> 56);
+ out[7] = (uint8_t)(time >> 48);
+
+ out[6] = (out[6] & 0x0F) | 0x10;
+ out[8] = (out[8] & 0x3F) | 0x80;
+}
+
+void
+uuid_generate(uuid_t out)
+{
+ uuid_generate_random(out);
+}
+
+int
+uuid_is_null(const uuid_t uu)
+{
+ return !memcmp(uu, UUID_NULL, sizeof(uuid_t));
+}
+
+int
+uuid_parse(const char *in, uuid_t uu)
+{
+ int n = 0;
+
+ sscanf(in,
+ "%hh2x%hh2x%hh2x%hh2x-"
+ "%hh2x%hh2x-"
+ "%hh2x%hh2x-"
+ "%hh2x%hh2x-"
+ "%hh2x%hh2x%hh2x%hh2x%hh2x%hh2x%n",
+ &uu[0], &uu[1], &uu[2], &uu[3],
+ &uu[4], &uu[5],
+ &uu[6], &uu[7],
+ &uu[8], &uu[9],
+ &uu[10], &uu[11], &uu[12], &uu[13], &uu[14], &uu[15], &n);
+
+ return (n != 36 || in[n] != '\0' ? -1 : 0);
+}
+
+void
+uuid_unparse_lower(const uuid_t uu, char *out)
+{
+ sprintf(out,
+ "%02x%02x%02x%02x-"
+ "%02x%02x-"
+ "%02x%02x-"
+ "%02x%02x-"
+ "%02x%02x%02x%02x%02x%02x",
+ uu[0], uu[1], uu[2], uu[3],
+ uu[4], uu[5],
+ uu[6], uu[7],
+ uu[8], uu[9],
+ uu[10], uu[11], uu[12], uu[13], uu[14], uu[15]);
+}
+
+void
+uuid_unparse_upper(const uuid_t uu, char *out)
+{
+ sprintf(out,
+ "%02X%02X%02X%02X-"
+ "%02X%02X-"
+ "%02X%02X-"
+ "%02X%02X-"
+ "%02X%02X%02X%02X%02X%02X",
+ uu[0], uu[1], uu[2], uu[3],
+ uu[4], uu[5],
+ uu[6], uu[7],
+ uu[8], uu[9],
+ uu[10], uu[11], uu[12], uu[13], uu[14], uu[15]);
+}
+
+void
+uuid_unparse(const uuid_t uu, char *out)
+{
+ uuid_unparse_upper(uu, out);
+}
projects / apple / xnu.git / blobdiff