This patch fixes two problems with the session helper:

1. When using multiple processes with the DB, it did not properly re-read the
database file when the other process makes a change.

2. Active mode was not properly working, due to the wrong key being written to
the database after a login.

=== modified file 'helpers/external_acl/session/ext_session_acl.cc'
--- helpers/external_acl/session/ext_session_acl.cc	2011-09-21 00:19:19 +0000
+++ helpers/external_acl/session/ext_session_acl.cc	2011-10-04 22:10:31 +0000
@@ -79,11 +79,16 @@
     DBT key, data;
     key.data = (void *)details;
     key.size = len;
+    /* This is very messy, but appears to be the only way to force a reload of the DB.
+       Failure to do this causes sync problems when multiple helper processes are running. */
+    shutdown_db();
+    init_db();   
     if (db->get(db, &key, &data, 0) == 0) {
         time_t timestamp;
         if (data.size != sizeof(timestamp)) {
             fprintf(stderr, "ERROR: %s: CORRUPTED DATABASE (%s)\n", program_name, details);
             db->del(db, &key, 0);
+            db->sync(db, 0);
             return 0;
         }
         memcpy(&timestamp, data.data, sizeof(timestamp));
@@ -111,6 +116,7 @@
     key.data = (void *)details;
     key.size = len;
     db->del(db, &key, 0);
+    db->sync(db, 0);
 }
 
 static void usage(void)
@@ -156,21 +162,19 @@
     while (fgets(request, HELPER_INPUT_BUFFER, stdin)) {
         int action = 0;
         const char *channel_id = strtok(request, " ");
-        const char *detail = strtok(NULL, "\n");
+        const char *detail = strtok(NULL, " \n");
         if (detail == NULL) {
             // Only 1 paramater supplied. We are expecting at least 2 (including the channel ID)
             fprintf(stderr, "FATAL: %s is concurrent and requires the concurrency option to be specified.\n", program_name);
             exit(1);
         }
-        const char *lastdetail = strrchr(detail, ' ');
+        const char *lastdetail = strtok(NULL, " \n");
         size_t detail_len = strlen(detail);
         if (lastdetail) {
-            if (strcmp(lastdetail, " LOGIN") == 0) {
+            if (strcmp(lastdetail, "LOGIN") == 0) {
                 action = 1;
-                detail_len = (size_t)(lastdetail-detail);
-            } else if (strcmp(lastdetail, " LOGOUT") == 0) {
+            } else if (strcmp(lastdetail, "LOGOUT") == 0) {
                 action = -1;
-                detail_len = (size_t)(lastdetail-detail);
             }
         }
         if (action == -1) {