1 files changed, 60 insertions, 0 deletions
diff --git a/pjlib/src/pj/guid_simple.c b/pjlib/src/pj/guid_simple.c
new file mode 100644
index 00000000..b5cca310
--- /dev/null
+++ b/pjlib/src/pj/guid_simple.c
@@ -0,0 +1,60 @@
+/* $Header: /pjproject-0.3/pjlib/src/pj/guid_simple.c 3     10/14/05 12:26a Bennylp $ */
+/* $Log: /pjproject-0.3/pjlib/src/pj/guid_simple.c $
+ * 
+ * 3     10/14/05 12:26a Bennylp
+ * Finished error code framework, some fixes in ioqueue, etc. Pretty
+ * major.
+ * 
+ * 2     9/17/05 10:37a Bennylp
+ * Major reorganization towards version 0.3.
+ * 
+ */
+#include <pj/guid.h>
+#include <pj/os.h>
+#include <pj/rand.h>
+#include <pj/string.h>
+#include <pj/compat/sprintf.h>
+
+const unsigned PJ_GUID_STRING_LENGTH=20;
+
+static void init_mac_address(unsigned char mac_addr[16])
+{
+    unsigned long *ulval1 = (unsigned long*) &mac_addr[0];
+    unsigned short *usval1 = (unsigned short*) &mac_addr[4];
+
+    *ulval1 = pj_rand();
+    *usval1 = (unsigned short) pj_rand();
+}
+
+PJ_DEF(pj_str_t*) pj_generate_unique_string(pj_str_t *str)
+{
+    static int guid_initialized;
+    static unsigned pid;
+    static char str_pid[5];
+    static unsigned char mac_addr[6];
+    static char str_mac_addr[16];
+    static unsigned clock_seq;
+
+    PJ_CHECK_STACK();
+
+    if (guid_initialized == 0) {
+	pid = pj_getpid();
+	init_mac_address(mac_addr);
+	clock_seq = 0;
+
+	sprintf(str_pid, "%04x", pid);
+	sprintf(str_mac_addr, "%02x%02x%02x%02x%02x%02x",
+	    mac_addr[0], mac_addr[1], mac_addr[2],
+	    mac_addr[3], mac_addr[4], mac_addr[5]);
+
+	guid_initialized = 1;
+    }
+
+    strcpy(str->ptr, str_pid);
+    sprintf(str->ptr+4, "%04x", clock_seq++);
+    pj_memcpy(str->ptr+8, str_mac_addr, 12);
+    str->slen = 20;
+
+    return str;
+}
+