diff -ur pure-ftpd-1.0.20.old/pureftpd-mysql.conf pure-ftpd-1.0.20/pureftpd-mysql.conf
--- pure-ftpd-1.0.20.old/pureftpd-mysql.conf 2003-01-21 21:09:44.000000000 +0100
+++ pure-ftpd-1.0.20/pureftpd-mysql.conf 2005-11-18 12:27:34.000000000 +0100
@@ -106,6 +106,12 @@
 # MySQLGetRatioUL SELECT ULRatio FROM users WHERE User="L"
 # MySQLGetRatioDL SELECT DLRatio FROM users WHERE User="L"
 
+# Optional : concurrent session limit per user.
+# The server has to be compiled with per-user-limits support.
+# Value 0 means unlimited. (default)
+
+#MySQLGetPerUserMax SELECT PerUserMax FROM users WHERE User="L"
+
 
 # Optional : bandwidth throttling.
 # The server has to be compiled with throttling support.
diff -ur pure-ftpd-1.0.20.old/src/log_mysql.c pure-ftpd-1.0.20/src/log_mysql.c
--- pure-ftpd-1.0.20.old/src/log_mysql.c 2004-05-15 23:14:06.000000000 +0200
+++ pure-ftpd-1.0.20/src/log_mysql.c 2005-11-18 11:48:58.000000000 +0100
@@ -300,6 +300,9 @@
     const char *bandwidth_ul = NULL;   /* stored bandwidth UL */
     const char *bandwidth_dl = NULL;   /* stored bandwidth DL */
 #endif
+#ifdef PER_USER_LIMITS
+    const char *perusermax = NULL;     /* stored per user concurrent sessions */
+#endif
     char *escaped_account = NULL;
     char *escaped_ip = NULL;
     char *escaped_port = NULL;
@@ -543,6 +546,18 @@
         }
     }
 #endif
+#ifdef PER_USER_LIMITS
+    if ((perusermax = pw_mysql_getquery(id_sql_server, sqlreq_getperusermax,
+                                          escaped_account, escaped_ip,
+                                          escaped_port, escaped_peer_ip,
+                                          escaped_decimal_ip)) != NULL) {
+        const unsigned long q = (unsigned long) strtoul(perusermax, NULL, 10);
+       
+        if (q > 0UL) {
+            result->per_user_max = q;
+        }
+    }
+#endif
     result->slow_tilde_expansion = !tildexp;
     result->auth_ok =- result->auth_ok;
     bye:
@@ -572,6 +587,9 @@
     free((void *) bandwidth_ul);
     free((void *) bandwidth_dl);
 #endif   
+#ifdef PER_USER_LIMITS
+    free((void *) perusermax);
+#endif   
     free((void *) escaped_account);
     free((void *) escaped_ip);
     free((void *) escaped_port);
diff -ur pure-ftpd-1.0.20.old/src/log_mysql_p.h pure-ftpd-1.0.20/src/log_mysql_p.h
--- pure-ftpd-1.0.20.old/src/log_mysql_p.h 2004-02-29 22:49:28.000000000 +0100
+++ pure-ftpd-1.0.20/src/log_mysql_p.h 2005-11-18 11:21:18.000000000 +0100
@@ -38,6 +38,9 @@
 static char *sqlreq_getbandwidth_ul;
 static char *sqlreq_getbandwidth_dl;
 #endif
+#ifdef PER_USER_LIMITS
+static char *sqlreq_getperusermax;
+#endif
 static signed char server_down;
 
 static ConfigKeywords mysql_config_keywords[] = {
@@ -68,6 +71,9 @@
     { "MYSQLGetBandwidthUL", &sqlreq_getbandwidth_ul },
     { "MYSQLGetBandwidthDL", &sqlreq_getbandwidth_dl },
 #endif
+#ifdef PER_USER_LIMITS
+    { "MYSQLGetPerUserMax", &sqlreq_getperusermax },
+#endif
     { NULL, NULL }
 };