--- uuid.c 2004/01/10 12:16:03 1.14
+++ uuid.c 2004/01/10 15:19:21 1.15
@@ -458,14 +458,75 @@
return;
}
+/* INTERNAL: generate UUID version 1, time part */
+static uuid_rc_t uuid_generate_v1_time(uuid_t *uuid, unsigned int mode, va_list ap)
+{
+ struct timeval tv;
+ ui64_t t;
+ ui64_t offset;
+ ui64_t ov;
+
+ /* determine current system time */
+ if (gettimeofday(&tv, NULL) == -1)
+ return UUID_RC_SYS;
+
+ /* convert from timeval (sec,usec) to OSSP ui64 (100*nsec) format */
+ t = ui64_n2i(tv.tv_sec);
+ t = ui64_muln(t, 1000000, NULL);
+ t = ui64_addn(t, tv.tv_usec, NULL);
+ t = ui64_muln(t, 10, NULL);
+
+ /* adjust for offset between UUID and Unix Epoch time through adding
+ the magic offset 01B21DD213814000 from draft-leach-uuids-guids-01.
+ (UUID UTC base time is October 15, 1582
+ Unix UTC base time is January 1, 1970) */
+ offset = ui64_s2i("01B21DD213814000", NULL, 16);
+ t = ui64_add(t, offset, NULL);
+
+ /* store the 60 LSB of the time in the UUID */
+ t = ui64_rol(t, 16, &ov);
+ uuid->obj.time_hi_and_version =
+ (uuid_uint16_t)(ui64_i2n(ov) & 0x00000fff); /* 12 of 16 bit only! */
+ t = ui64_rol(t, 16, &ov);
+ uuid->obj.time_mid =
+ (uuid_uint16_t)(ui64_i2n(ov) & 0x0000ffff); /* all 16 bit */
+ t = ui64_rol(t, 32, &ov);
+ uuid->obj.time_low =
+ (uuid_uint32_t)(ui64_i2n(ov) & 0xffffffff); /* all 32 bit */
+
+ return UUID_RC_OK;
+}
+
+/* INTERNAL: generate UUID version 1, clock part */
+static uuid_rc_t uuid_generate_v1_clock(uuid_t *uuid, unsigned int mode, va_list ap)
+{
+ /* FIXME */
+ return UUID_RC_OK;
+}
+
+/* INTERNAL: generate UUID version 1, node part */
+static uuid_rc_t uuid_generate_v1_node(uuid_t *uuid, unsigned int mode, va_list ap)
+{
+ /* FIXME */
+ return UUID_RC_OK;
+}
+
/* INTERNAL: generate UUID version 1: time, clock and node based */
static uuid_rc_t uuid_generate_v1(uuid_t *uuid, unsigned int mode, va_list ap)
{
+ uuid_rc_t rc;
+
+ /* generate individual parts of v1 UUID */
+ if ((rc = uuid_generate_v1_time (uuid, mode, ap)) != UUID_RC_OK)
+ return rc;
+ if ((rc = uuid_generate_v1_clock(uuid, mode, ap)) != UUID_RC_OK)
+ return rc;
+ if ((rc = uuid_generate_v1_node (uuid, mode, ap)) != UUID_RC_OK)
+ return rc;
+
/* brand with version and variant */
uuid_brand(uuid, 1);
- /* FIXME */
-
return UUID_RC_OK;
}
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