Changeset 1815 for pjproject/trunk/pjsip/src/pjsua-lib/pjsua_core.c

Timestamp:

Feb 21, 2008 9:36:34 PM (17 years ago)

Author:

bennylp

Message:

Ticket #412: increased randomness of guid_simple.c to 192-bits, and seed random number generator in pjsua_core.c

File:

• pjproject/trunk/pjsip/src/pjsua-lib/pjsua_core.c (modified) (2 diffs)

pjproject/trunk/pjsip/src/pjsua-lib/pjsua_core.c

@@ -512 +512 @@
 
 
+/* Init random seed */
+static void init_random_seed(void)
+{
+    pj_sockaddr addr;
+    const pj_str_t *hostname;
+    pj_uint32_t pid;
+    pj_time_val t;
+    unsigned seed=0;
+
+    /* Add hostname */
+    hostname = pj_gethostname();
+    seed = pj_hash_calc(seed, hostname->ptr, (int)hostname->slen);
+
+    /* Add primary IP address */
+    if (pj_gethostip(pj_AF_INET(), &addr)==PJ_SUCCESS)
+        seed = pj_hash_calc(seed, &addr.ipv4.sin_addr, 4);
+
+    /* Get timeofday */
+    pj_gettimeofday(&t);
+    seed = pj_hash_calc(seed, &t, sizeof(t));
+
+    /* Add PID */
+    pid = pj_getpid();
+    seed = pj_hash_calc(seed, &pid, sizeof(pid));
+
+    /* Init random seed */
+    pj_srand(seed);
+}
+
 /*
  * Instantiate pjsua application.
@@ -529 +558 @@
     PJ_ASSERT_RETURN(status == PJ_SUCCESS, status);
 
+    /* Init random seed */
+    init_random_seed();
 
     /* Init PJLIB-UTIL: */