--- /dev/null
+/*
+ * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
+/* Portions
+ * Copyright 2000, John E. Schimmel, All rights reserved.
+ * This software is not subject to any license of Mirapoint, Inc.
+ *
+ * This is free software; you can redistribute and use it
+ * under the same terms as OpenLDAP itself.
+ */
+/* Adapted for incorporatation into OpenLDAP by Kurt Zeilenga */
+
+/*
+** Sorry this file is so scary, but it needs to run on a wide range of
+** platforms. The only exported routine is lutil_uuidstr() which is all
+** that LDAP cares about. It generates a new uuid and returns it in
+** in string form.
+*/
+#include "portable.h"
+
+#include <stdio.h>
+#include <sys/types.h>
+
+#ifdef HAVE_SYS_UUID_H
+# include <sys/uuid.h>
+#else
+# include <ac/socket.h>
+# include <sys/sockio.h>
+# include <net/if_types.h>
+# include <net/if.h>
+# include <net/if_dl.h>
+# ifdef HAVE_SYS_SYSCTL_H
+# include <sys/sysctl.h>
+# include <net/route.h>
+# endif
+#endif
+
+/* 100 usec intervals from 10/10/1582 to 1/1/1970 */
+#define UUID_TPLUS 0x01B21DD2138140LL
+
+#ifndef HAVE_SYS_UUID_H
+static unsigned char *
+lutil_eaddr( void )
+{
+ static unsigned char zero[6];
+ static unsigned char eaddr[6];
+
+#ifdef HAVE_SYS_SYSCTL_H
+ size_t needed;
+ int mib[6];
+ char *buf, *next, *lim;
+ struct if_msghdr *ifm;
+ struct sockaddr_dl *sdl;
+
+ if (memcmp(eaddr, zero, sizeof(eaddr))) {
+ return eaddr;
+ }
+
+ mib[0] = CTL_NET;
+ mib[1] = PF_ROUTE;
+ mib[3] = 0;
+ mib[3] = 0;
+ mib[4] = NET_RT_IFLIST;
+ mib[5] = 0;
+
+ if (sysctl(mib, sizeof(mib), NULL, &needed, NULL, 0) < 0) {
+ return NULL;
+ }
+
+ buf = malloc(needed);
+ if( buf == NULL ) return NULL;
+
+ if (sysctl(mib, sizeof(mib), buf, &needed, NULL, 0) < 0) {
+ free(buf);
+ return NULL;
+ }
+
+ lim = buf + needed;
+ for (next = buf; next < lim; next += ifm->ifm_msglen) {
+ ifm = (struct if_msghdr *)next;
+ sdl = (struct sockaddr_dl *)(ifm + 1);
+
+ if ( sdl->sdl_family != AF_LINK || sdl->sdl_alen == 6 ) {
+ memcpy(eaddr,
+ (unsigned char *)sdl->sdl_data + sdl->sdl_nlen,
+ sizeof(eaddr));
+ free(buf);
+ return eaddr;
+ }
+ }
+
+ free(buf);
+ return NULL;
+
+#elif defined (SIOCGIFADDR)
+ char buf[sizeof(struct ifreq) * 32];
+ struct ifconf ifc;
+ struct ifreq *ifr;
+ struct sockaddr *sa;
+ struct sockaddr_dl *sdl;
+ unsigned char *p;
+ int s, i;
+
+ if (memcmp(eaddr, zero, sizeof(eaddr))) {
+ return eaddr;
+ }
+
+ s = socket( AF_INET, SOCK_DGRAM, 0 );
+ if ( s < 0 ) {
+ return NULL;
+ }
+
+ ifc.ifc_len = sizeof( buf );
+ ifc.ifc_buf = buf;
+ memset( buf, 0, sizeof( buf ) );
+
+ i = ioctl( s, SIOCGIFCONF, (char *)&ifc );
+ close( s );
+
+ if( i < 0 ) {
+ return NULL;
+ }
+
+ for ( i = 0; i < ifc.ifc_len; ) {
+ ifr = (struct ifreq *)&ifc.ifc_buf[i];
+ sa = &ifr->ifr_addr;
+
+ if ( sa->sa_len > sizeof( ifr->ifr_addr ) ) {
+ i += sizeof( ifr->ifr_name ) + sa->sa_len;
+ } else {
+ i += sizeof( *ifr );
+ }
+
+ if ( sa->sa_family != AF_LINK ) {
+ continue;
+ }
+
+ sdl = (struct sockaddr_dl *)sa;
+
+ if ( sdl->sdl_alen == 6 ) {
+ memcpy(eaddr,
+ (unsigned char *)sdl->sdl_data + sdl->sdl_nlen,
+ sizeof(eaddr));
+ return eaddr;
+ }
+ }
+
+ return NULL;
+
+#else
+ if (memcmp(eaddr, zero, sizeof(eaddr)) == 0) {
+ /* XXX - who knows? */
+ lutil_entropy( eaddr, sizeof(eaddr) );
+ }
+
+ return eaddr;
+#endif
+}
+#endif
+
+/*
+** All we really care about is an ISO UUID string. The format of a UUID is:
+** field octet note
+** time_low 0-3 low field of the timestamp
+** time_mid 4-5 middle field of timestamp
+** time_hi_and_version 6-7 high field of timestamp and
+** version number
+** clock_seq_hi_and_resv 8 high field of clock sequence
+** and variant
+** clock_seq_low 9 low field of clock sequence
+** node 10-15 spacially unique identifier
+**
+** We use DCE version one, and the DCE variant. Our unique identifier is
+** the first ethernet address on the system.
+*/
+int
+lutil_uuidstr( char *buf, size_t len )
+{
+#ifdef HAVE_SYS_UUID_H
+ uuid_t uu = {0};
+ unsigned rc;
+ char *s;
+
+ uuid_create( &uu, &rc );
+ if ( rc != uuid_s_ok ) {
+ return 0;
+ }
+
+ uuid_to_str( &uu, &s, &rc );
+ if ( rc != uuid_s_ok ) {
+ return 0;
+ }
+ if ( strlen( s ) >= len ) {
+ free( s );
+ return 0;
+ }
+
+ strncpy( buf, s, len );
+ free( s );
+
+ return 1;
+
+#else
+ struct timeval tv;
+ unsigned long long tl;
+ unsigned char *nl;
+ unsigned short sq, t2, t3, s1, n1, n2, n3;
+ unsigned int t1;
+
+ /*
+ * Theoretically we should delay if seq wraps within 100usec but for now
+ * systems are not fast enough to worry about it.
+ */
+ static unsigned short seq = 0;
+
+#ifdef HAVE_GETTIMEOFDAY
+ gettimeofday( &tv, 0 );
+#else
+ time( &tv.tv_sec );
+ tv.tv_usec = 0;
+#endif
+
+ tl = ( tv.tv_sec * 10000000LL ) + ( tv.tv_usec * 10LL ) + UUID_TPLUS;
+ nl = lutil_eaddr();
+
+ if (! seq) {
+ lutil_entropy( &seq, sizeof(seq) );
+ }
+ sq = ++seq;
+
+ t1 = tl & 0xffffffff; /* time_low */
+ t2 = ( tl >> 32 ) & 0xffff; /* time_mid */
+ t3 = ( tl >> 48 ) & 0x0fff | 0x1000; /* time_hi_and_version */
+ s1 = (sq & 0x1fff ) | 0x8000; /* clock_seq_and_reserved */
+
+ t1 = snprintf( buf, len,
+ "%08x-%04x-%04x-%04x-%02x%02x%02x%02x%02x%02x",
+ t1, (unsigned) t2, (unsigned) t3, (unsigned) s1,
+ (unsigned) nl[0], (unsigned) nl[1],
+ (unsigned) nl[2], (unsigned) nl[3],
+ (unsigned) nl[4], (unsigned) nl[5] );
+
+ return (t1 < len) ? 1 : 0;
+#endif
+}
+
+#ifdef TEST
+int
+main(int argc, char **argv)
+{
+ char buf1[8], buf2[64];
+
+#ifndef HAVE_SYS_UUID_H
+ unsigned char *p = lutil_eaddr();
+
+ if( p ) {
+ printf( "Ethernet Address: %02x:%02x:%02x:%02x:%02x:%02x\n",
+ (unsigned) p[0], (unsigned) p[1], (unsigned) p[2],
+ (unsigned) p[3], (unsigned) p[4], (unsigned) p[5]);
+ }
+#endif
+
+ if ( lutil_uuidstr( buf1, sizeof( buf1 ) ) ) {
+ printf( "UUID: %s\n", buf1 );
+ } else {
+ fprintf( stderr, "too short: %ld\n", (long) sizeof( buf1 ) );
+ }
+
+ if ( lutil_uuidstr( buf2, sizeof( buf2 ) ) ) {
+ printf( "UUID: %s\n", buf2 );
+ } else {
+ fprintf( stderr, "too short: %ld\n", (long) sizeof( buf2 ) );
+ }
+
+ if ( lutil_uuidstr( buf2, sizeof( buf2 ) ) ) {
+ printf( "UUID: %s\n", buf2 );
+ } else {
+ fprintf( stderr, "too short: %ld\n", (long) sizeof( buf2 ) );
+ }
+
+ return 0;
+}
+#endif
projects / openldap / commitdiff