/*
* A basic toolset containing miscellaneous functions for string manipluation,
* encoding/decoding, and a bunch of other stuff.
+ *
+ * Copyright (c) 1987-2011 by the citadel.org team
+ *
+ * This program is open source software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
dest[dpos++] = '\r';
dest[dpos++] = '\n';
dest[dpos] = 0;
- thisline = 0;
}
return(dpos);
* Generate a new, globally unique UID parameter for a calendar etc. object
*/
void generate_uuid(char *buf) {
- static int seq = 0;
+ static int seq = (-1);
+ static int no_kernel_uuid = 0;
+
+ /* If we are running on Linux then we have a kernelspace uuid generator available */
+
+ if (no_kernel_uuid == 0) {
+ FILE *fp;
+ fp = fopen("/proc/sys/kernel/random/uuid", "rb");
+ if (fp) {
+ int rv;
+ rv = fread(buf, 36, 1, fp);
+ fclose(fp);
+ if (rv == 1) return;
+ }
+ }
+
+ /* If the kernel didn't provide us with a uuid, we generate a pseudo-random one */
+
+ no_kernel_uuid = 1;
+
+ if (seq == (-1)) {
+ seq = (int)rand();
+ }
+ ++seq;
+ seq = (seq % 0x0FFF) ;
- sprintf(buf, "%lx-%lx-%x",
- time(NULL),
+ sprintf(buf, "%08lx-%04lx-4%03x-a%03x-%012lx",
+ (long)time(NULL),
(long)getpid(),
- (seq++)
+ seq,
+ seq,
+ (long)rand()
);
}