Ping new master when we get C_MASTER and delay next election to allow

[l2tpns.git] / l2tpns.c

diff --git a/l2tpns.c b/l2tpns.c
index 22187e1..7ce6e6b 100644 (file)
--- a/l2tpns.c
+++ b/l2tpns.c
@@ -4,7 +4,7 @@
 // Copyright (c) 2002 FireBrick (Andrews & Arnold Ltd / Watchfront Ltd) - GPL licenced
 // vim: sw=8 ts=8
 
-char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.109 2005/06/12 06:10:29 bodea Exp $";
+char const *cvs_id_l2tpns = "$Id: l2tpns.c,v 1.111 2005/06/14 04:47:24 bodea Exp $";
 
 #include <arpa/inet.h>
 #include <assert.h>
@@ -326,7 +326,8 @@ static void initrandom(char *source)
                return;
 
        // close previous source, if any
-       if (rand_fd >= 0) close(rand_fd);
+       if (rand_fd >= 0)
+               close(rand_fd);
 
        rand_fd = -1;
 
@@ -343,13 +344,6 @@ static void initrandom(char *source)
                                        path, strerror(errno));
                }
        }
-
-       // no source: seed prng
-       {
-               unsigned seed = time_now ^ getpid();
-               LOG(4, 0, 0, "Seeding the pseudo random generator: %u\n", seed);
-               srand(seed);
-       }
 }
 
 // fill buffer with random data
@@ -370,7 +364,7 @@ void random_data(uint8_t *buf, int len)
                                        strerror(errno));
 
                                // fall back to rand()
-                               initrandom(0);
+                               initrandom(NULL);
                        }
 
                        n = 0;
@@ -2030,8 +2024,6 @@ void processudp(uint8_t * buf, int len, struct sockaddr_in *addr)
                                                continue;
                                        }
 
-                                       LOG(4, s, t, "Hidden AVP\n");
-
                                        // Unhide the AVP
                                        unhide_value(b, n, mtype, session[s].random_vector, session[s].random_vector_length);
 
@@ -2052,7 +2044,9 @@ void processudp(uint8_t * buf, int len, struct sockaddr_in *addr)
                                        n = orig_len;
                                }
 
-                               LOG(4, s, t, "   AVP %d (%s) len %d\n", mtype, avp_name(mtype), n);
+                               LOG(4, s, t, "   AVP %d (%s) len %d%s%s\n", mtype, avp_name(mtype), n,
+                                       flags & 0x40 ? ", hidden" : "", flags & 0x80 ? ", mandatory" : "");
+
                                switch (mtype)
                                {
                                case 0:     // message type
@@ -2274,6 +2268,8 @@ void processudp(uint8_t * buf, int len, struct sockaddr_in *addr)
                                case 36:    // Random Vector
                                        LOG(4, s, t, "   Random Vector received.  Enabled AVP Hiding.\n");
                                        memset(session[s].random_vector, 0, sizeof(session[s].random_vector));
+                                       if (n > sizeof(session[s].random_vector))
+                                               n = sizeof(session[s].random_vector);
                                        memcpy(session[s].random_vector, b, n);
                                        session[s].random_vector_length = n;
                                        break;
@@ -3929,6 +3925,13 @@ int main(int argc, char *argv[])
        initrad();
        initippool();
 
+       // seed prng
+       {
+               unsigned seed = time_now ^ getpid();
+               LOG(4, 0, 0, "Seeding the pseudo random generator: %u\n", seed);
+               srand(seed);
+       }
+
        signal(SIGHUP,  sighup_handler);
        signal(SIGCHLD, sigchild_handler);
        signal(SIGTERM, shutdown_handler);
@@ -5008,11 +5011,11 @@ static void unhide_value(uint8_t *value, size_t len, uint16_t type, uint8_t *vec
        uint8_t digest[16];
        uint8_t *last;
        size_t d = 0;
+       uint16_t m = htons(type);
 
        // Compute initial pad
        MD5Init(&ctx);
-       MD5Update(&ctx, (uint8_t) (type >> 8) & 0xff, 1);
-       MD5Update(&ctx, (uint8_t)  type       & 0xff, 1);
+       MD5Update(&ctx, (unsigned char *) &m, 2);
        MD5Update(&ctx, config->l2tpsecret, strlen(config->l2tpsecret));
        MD5Update(&ctx, vector, vec_len);
        MD5Final(digest, &ctx);