CHAP support from Jordan Hrycaj (work in progress)

[l2tpns.git] / cluster.c

diff --git a/cluster.c b/cluster.c
index 6ef6f83..4035f49 100644 (file)
--- a/cluster.c
+++ b/cluster.c
@@ -1,8 +1,12 @@
 // L2TPNS Clustering Stuff
 
-char const *cvs_id_cluster = "$Id: cluster.c,v 1.25 2004/12/16 08:49:53 bodea Exp $";
+char const *cvs_id_cluster = "$Id: cluster.c,v 1.28 2004/12/22 05:30:58 bodea Exp $";
 
 #include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <unistd.h>
+#include <inttypes.h>
 #include <sys/file.h>
 #include <sys/stat.h>
 #include <sys/socket.h>
@@ -13,12 +17,7 @@ char const *cvs_id_cluster = "$Id: cluster.c,v 1.25 2004/12/16 08:49:53 bodea Ex
 #include <string.h>
 #include <malloc.h>
 #include <errno.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <stdio.h>
 #include <libcli.h>
-#include <inttypes.h>
 
 #include "l2tpns.h"
 #include "cluster.h"
@@ -39,11 +38,12 @@ char const *cvs_id_cluster = "$Id: cluster.c,v 1.25 2004/12/16 08:49:53 bodea Ex
  */
 
 // Module variables.
-int cluster_sockfd = 0;                // The filedescriptor for the cluster communications port.
+int cluster_sockfd = 0;                        // The filedescriptor for the cluster communications port.
 
 in_addr_t my_address = 0;              // The network address of my ethernet port.
 static int walk_session_number = 0;    // The next session to send when doing the slow table walk.
 static int walk_tunnel_number = 0;     // The next tunnel to send when doing the slow table walk.
+int forked = 0;                                // Sanity check: CLI must not diddle with heartbeat table
 
 #define MAX_HEART_SIZE (8192)  // Maximum size of heartbeat packet. Must be less than max IP packet size :)
 #define MAX_CHANGES  (MAX_HEART_SIZE/(sizeof(sessiont) + sizeof(int) ) - 2)    // Assumes a session is the biggest type!
@@ -62,7 +62,7 @@ static struct {
 
 static struct {
        in_addr_t peer;
-       time_t basetime;
+       uint32_t basetime;
        clockt timestamp;
        int uptodate;
 } peers[CLUSTER_MAX_SIZE];     // List of all the peers we've heard from.
@@ -867,6 +867,11 @@ int cluster_send_session(int sid)
                return -1;
        }
 
+       if (forked) {
+               LOG(0, sid, 0, "cluster_send_session called from child process!\n");
+               return -1;
+       }
+
        return type_changed(C_CSESSION, sid);
 }
 
@@ -1178,9 +1183,22 @@ static int cluster_process_heartbeat(uint8_t *data, int size, int more, uint8_t
        config->cluster_last_hb = TIME; // Reset to ensure that we don't become master!!
 
        if (config->cluster_seq_number != h->seq) {     // Out of sequence heartbeat!
-               LOG(1, 0, 0, "HB: Got seq# %d but was expecting %d. asking for resend.\n", h->seq, config->cluster_seq_number);
+               static int lastseen_seq = 0;
+               static time_t lastseen_time = 0;
 
-               peer_send_message(addr, C_LASTSEEN, config->cluster_seq_number, NULL, 0);
+               // limit to once per second for a particular seq#
+               int ask = (config->cluster_seq_number != lastseen_seq || time_now != lastseen_time);
+
+               LOG(1, 0, 0, "HB: Got seq# %d but was expecting %d.  %s.\n",
+                       h->seq, config->cluster_seq_number,
+                       ask ? "Asking for resend" : "Ignoring");
+
+               if (ask)
+               {
+                       lastseen_seq = config->cluster_seq_number;
+                       lastseen_time = time_now;
+                       peer_send_message(addr, C_LASTSEEN, config->cluster_seq_number, NULL, 0);
+               }
 
                config->cluster_last_hb = TIME; // Reset to ensure that we don't become master!!
 
@@ -1440,12 +1458,12 @@ int cmd_show_cluster(struct cli_def *cli, char *command, char **argv, int argc)
                                : "Not defined",
                        0.1 * (TIME - config->cluster_last_hb));
                cli_print(cli, "Uptodate         : %s", config->cluster_iam_uptodate ? "Yes" : "No");
-               cli_print(cli, "Table version #  : %llu", config->cluster_table_version);
+               cli_print(cli, "Table version #  : %" PRIu64, config->cluster_table_version);
                cli_print(cli, "Next sequence number expected: %d", config->cluster_seq_number);
                cli_print(cli, "%d sessions undefined of %d", config->cluster_undefined_sessions, config->cluster_highest_sessionid);
                cli_print(cli, "%d tunnels undefined of %d", config->cluster_undefined_tunnels, config->cluster_highest_tunnelid);
        } else {
-               cli_print(cli, "Table version #  : %llu", config->cluster_table_version);
+               cli_print(cli, "Table version #  : %" PRIu64, config->cluster_table_version);
                cli_print(cli, "Next heartbeat # : %d", config->cluster_seq_number);
                cli_print(cli, "Highest session  : %d", config->cluster_highest_sessionid);
                cli_print(cli, "Highest tunnel   : %d", config->cluster_highest_tunnelid);
@@ -1456,7 +1474,7 @@ int cmd_show_cluster(struct cli_def *cli, char *command, char **argv, int argc)
        if (num_peers)
                cli_print(cli, "%20s  %10s %8s", "Address", "Basetime", "Age");
        for (i = 0; i < num_peers; ++i) {
-               cli_print(cli, "%20s  %10d %8d", fmtaddr(peers[i].peer, 0),
+               cli_print(cli, "%20s  %10u %8d", fmtaddr(peers[i].peer, 0),
                        peers[i].basetime, TIME - peers[i].timestamp);
        }
        return CLI_OK;