X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=libcitadel%2Flib%2Ftools.c;h=0c012e7955e184d128b589ad547b1bf645ebb767;hb=d9666dbf7dd0623cdf4335ba3bae3776c592050b;hp=4a8eb6baaf108b426f256b5c6194599f2dce4754;hpb=1dd7c0f770f23bbc4f65de406deb75eb059b417f;p=citadel.git

diff --git a/libcitadel/lib/tools.c b/libcitadel/lib/tools.c
index 4a8eb6baa..0c012e795 100644
--- a/libcitadel/lib/tools.c
+++ b/libcitadel/lib/tools.c
@@ -858,12 +858,20 @@ char *strcpy(char *dest, const char *src) {
  * 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);
 
-	sprintf(buf, "%lx-%lx-%x",
-		time(NULL),
+	if (seq == (-1)) {
+		seq = (int)rand();
+	}
+	++seq;
+	seq = (seq % 0x0FFF) ;
+
+	sprintf(buf, "%08lx-%04lx-4%03x-a%03x-%012lx",
+		(long)time(NULL),
 		(long)getpid(),
-		(seq++)
+		seq,
+		seq,
+		(long)rand()
 	);
 }