diff -ur pure-ftpd-1.0.49.org/config.h.in pure-ftpd-1.0.49/config.h.in
--- pure-ftpd-1.0.49.org/config.h.in	2019-03-25 18:00:47.000000000 +0100
+++ pure-ftpd-1.0.49/config.h.in	2019-06-10 11:13:52.181133752 +0200
@@ -3,6 +3,9 @@
 /* Define if building universal (internal helper macro) */
 #undef AC_APPLE_UNIVERSAL_BUILD
 
+/* with apparmor */
+#undef APPARMOR
+
 /* display only boring messages */
 #undef BORING_MODE
 
diff -ur pure-ftpd-1.0.49.org/configure.ac pure-ftpd-1.0.49/configure.ac
--- pure-ftpd-1.0.49.org/configure.ac	2019-04-03 12:41:30.000000000 +0200
+++ pure-ftpd-1.0.49/configure.ac	2019-06-10 11:13:52.181133752 +0200
@@ -790,6 +790,13 @@
     AC_DEFINE(QUOTAS,,[with quotas])
   fi ])
 
+AC_ARG_WITH(apparmor,
+[AS_HELP_STRING(--with-apparmorquotas,Support changing Apparmor Hats)],
+[ if test "x$withval" = "xyes" ; then
+    AC_DEFINE(APPARMOR,,[with apparmor])
+    LIBS="$LIBS -lapparmor"
+  fi ])
+
 AC_ARG_WITH(ftpwho,
 [AS_HELP_STRING(--with-ftpwho,Support for pure-ftpwho)],
 [ if test "x$withval" = "xyes" ; then
Only in pure-ftpd-1.0.49: configure.ac.orig
diff -ur pure-ftpd-1.0.49.org/pureftpd-mysql.conf pure-ftpd-1.0.49/pureftpd-mysql.conf
--- pure-ftpd-1.0.49.org/pureftpd-mysql.conf	2019-06-10 11:13:16.120061167 +0200
+++ pure-ftpd-1.0.49/pureftpd-mysql.conf	2019-06-10 11:13:52.181133752 +0200
@@ -112,6 +112,9 @@
 # MySQLGetBandwidthDL SELECT DLBandwidth FROM users WHERE User='\L'
 
 
+# Optional : Apparmor Hat to use.
+# MYSQLGetApparmorHat SELECT hat FROM users WHERE User='\L'
+
 # Enable ~ expansion. NEVER ENABLE THIS BLINDLY UNLESS :
 # 1) You know what you are doing.
 # 2) Real and virtual users match.
diff -ur pure-ftpd-1.0.49.org/README.Authentication-Modules pure-ftpd-1.0.49/README.Authentication-Modules
--- pure-ftpd-1.0.49.org/README.Authentication-Modules	2019-03-25 18:10:06.000000000 +0100
+++ pure-ftpd-1.0.49/README.Authentication-Modules	2019-06-10 11:17:27.140847844 +0200
@@ -118,6 +118,9 @@
 
 The maximal authorized number of concurrent sessions.
 
+* apparmor_hat:xxx (optional)
+
+Apparmor HAT name.
 
           ------------------------ EXAMPLE ------------------------
           
diff -ur pure-ftpd-1.0.49.org/src/ftpd.c pure-ftpd-1.0.49/src/ftpd.c
--- pure-ftpd-1.0.49.org/src/ftpd.c	2019-06-10 11:13:16.123394599 +0200
+++ pure-ftpd-1.0.49/src/ftpd.c	2019-06-10 11:13:52.184467185 +0200
@@ -18,6 +18,9 @@
 #ifdef QUOTAS
 # include "quotas.h"
 #endif
+#ifdef APPARMOR
+# include <sys/apparmor.h>
+#endif
 #ifdef WITH_DIRALIASES
 # include "diraliases.h"
 #endif
@@ -1516,6 +1519,9 @@
         result.ratio_download = ratio_download;
         result.ratio_ul_changed = result.ratio_dl_changed = 0;
 #endif
+#ifdef APPARMOR
+        result.apparmor_hat = NULL;
+#endif
 #ifdef PER_USER_LIMITS
         result.per_user_max = per_user_max;
 #endif
@@ -1944,6 +1950,16 @@
 # endif
     enablesignals();
 #endif
+
+#ifdef APPARMOR
+    if (authresult.apparmor_hat != NULL) {
+        if (change_hat(authresult.apparmor_hat, zrand()) < 0)
+            die(421, LOG_ERR, MSG_CHROOT_FAILED);
+        logfile(LOG_INFO, MSG_APPARMOR_HAT, account, authresult.apparmor_hat);
+        free(authresult.apparmor_hat);
+    }
+#endif
+
     logfile(LOG_INFO, MSG_IS_NOW_LOGGED_IN, account);
 #ifdef FTPWHO
     if (shm_data_cur != NULL) {
diff -ur pure-ftpd-1.0.49.org/src/ftpd.h pure-ftpd-1.0.49/src/ftpd.h
--- pure-ftpd-1.0.49.org/src/ftpd.h	2019-06-10 11:13:16.123394599 +0200
+++ pure-ftpd-1.0.49/src/ftpd.h	2019-06-10 11:13:52.184467185 +0200
@@ -291,6 +291,9 @@
 #ifdef PER_USER_LIMITS
     unsigned int per_user_max;
 #endif
+#ifdef APPARMOR
+    const char *apparmor_hat;
+#endif
 } AuthResult;
 
 typedef struct PureFileInfo_ {
diff -ur pure-ftpd-1.0.49.org/src/log_extauth.c pure-ftpd-1.0.49/src/log_extauth.c
--- pure-ftpd-1.0.49.org/src/log_extauth.c	2019-04-03 12:38:36.000000000 +0200
+++ pure-ftpd-1.0.49/src/log_extauth.c	2019-06-10 11:15:54.581435088 +0200
@@ -145,6 +145,19 @@
 #endif
 }
 
+static void callback_reply_apparmor_hat(const char *str, AuthResult * const result)
+{
+#ifdef APPARMOR
+    if (*str) {
+        free((void *) (result->apparmor_hat));
+        result->apparmor_hat = strdup(str);
+    }
+#else
+    (void) str;
+    (void) result;
+#endif
+}
+
 static void callback_reply_end(const char *str, AuthResult * const result)
 {
     (void) str;
@@ -221,6 +234,9 @@
     result->uid = (uid_t) 0;
     result->gid = (gid_t) 0;
     result->dir = NULL;
+#ifdef APPARMOR
+    result->apparmor_hat = NULL;
+#endif
     result->slow_tilde_expansion = 1;
     auth_finalized = 0;
     if ((readnb = safe_read(kindy, line, sizeof line - 1U)) <= (ssize_t) 0) {
diff -ur pure-ftpd-1.0.49.org/src/log_extauth.h pure-ftpd-1.0.49/src/log_extauth.h
--- pure-ftpd-1.0.49.org/src/log_extauth.h	2019-03-25 18:11:33.000000000 +0100
+++ pure-ftpd-1.0.49/src/log_extauth.h	2019-06-10 11:14:18.448581707 +0200
@@ -35,6 +35,7 @@
 #define EXTAUTH_REPLY_RATIO_UPLOAD "ratio_upload" EXTAUTH_KEYWORD_SEP
 #define EXTAUTH_REPLY_RATIO_DOWNLOAD "ratio_download" EXTAUTH_KEYWORD_SEP
 #define EXTAUTH_REPLY_PER_USER_MAX "per_user_max" EXTAUTH_KEYWORD_SEP
+#define EXTAUTH_REPLY_APPARMOR_HAT "apparmor_hat" EXTAUTH_KEYWORD_SEP
 #define EXTAUTH_REPLY_END "end"
 
 #endif
diff -ur pure-ftpd-1.0.49.org/src/log_extauth_p.h pure-ftpd-1.0.49/src/log_extauth_p.h
--- pure-ftpd-1.0.49.org/src/log_extauth_p.h	2018-09-19 23:53:06.000000000 +0200
+++ pure-ftpd-1.0.49/src/log_extauth_p.h	2019-06-10 11:15:04.449947766 +0200
@@ -34,6 +34,7 @@
 static void callback_reply_ratio_upload(const char *str, AuthResult * const result);
 static void callback_reply_ratio_download(const char *str, AuthResult * const result);
 static void callback_reply_per_user_max(const char *str, AuthResult * const result);
+static void callback_reply_apparmor_hat(const char *str, AuthResult * const result);
 static void callback_reply_end(const char *str, AuthResult * const result);
 
 static ExtauthCallBack extauth_callbacks[] = {
@@ -49,6 +50,7 @@
     { EXTAUTH_REPLY_RATIO_UPLOAD, callback_reply_ratio_upload },
     { EXTAUTH_REPLY_RATIO_DOWNLOAD, callback_reply_ratio_download },
     { EXTAUTH_REPLY_PER_USER_MAX, callback_reply_per_user_max },
+    { EXTAUTH_REPLY_APPARMOR_HAT, callback_reply_apparmor_hat },
     { EXTAUTH_REPLY_END, callback_reply_end },
     { NULL, callback_reply_end }
 };
diff -ur pure-ftpd-1.0.49.org/src/log_ldap.c pure-ftpd-1.0.49/src/log_ldap.c
--- pure-ftpd-1.0.49.org/src/log_ldap.c	2019-04-02 16:00:40.000000000 +0200
+++ pure-ftpd-1.0.49/src/log_ldap.c	2019-06-10 11:13:52.184467185 +0200
@@ -635,6 +635,9 @@
     if ((result->dir = strdup(pw->pw_dir)) == NULL) {
         return;
     }
+#ifdef APPARMOR
+    result->apparmor_hat = NULL;
+#endif
     result->slow_tilde_expansion = 1;
     result->auth_ok = 1;            /* User found, authentication ok */
 }
diff -ur pure-ftpd-1.0.49.org/src/log_mysql.c pure-ftpd-1.0.49/src/log_mysql.c
--- pure-ftpd-1.0.49.org/src/log_mysql.c	2019-06-10 11:13:16.126728032 +0200
+++ pure-ftpd-1.0.49/src/log_mysql.c	2019-06-10 11:13:52.184467185 +0200
@@ -332,6 +332,9 @@
     const char *bandwidth_ul = NULL;   /* stored bandwidth UL */
     const char *bandwidth_dl = NULL;   /* stored bandwidth DL */
 #endif
+#ifdef APPARMOR
+    const char *apparmor_hat = NULL;    /* Apparmor hat name */
+#endif
     char *escaped_account = NULL;
     char *escaped_ip = NULL;
     char *escaped_port = NULL;
@@ -620,6 +623,15 @@
         }
     }
 #endif
+#ifdef APPARMOR
+    if ((apparmor_hat = pw_mysql_getquery(id_sql_server, sqlreq_getapparmor_hat,
+                                          escaped_account, escaped_ip,
+                                          escaped_port, escaped_peer_ip,
+                                          escaped_decimal_ip)) != NULL) {
+        result->apparmor_hat = apparmor_hat;
+        apparmor_hat = NULL;
+    }
+#endif
     result->slow_tilde_expansion = !tildexp;
     result->auth_ok = -result->auth_ok;
     bye:
@@ -649,6 +661,9 @@
     free((void *) bandwidth_ul);
     free((void *) bandwidth_dl);
 #endif
+#ifdef APPARMOR
+    free((void *) apparmor_hat);
+#endif
     free((void *) escaped_account);
     free((void *) escaped_ip);
     free((void *) escaped_port);
@@ -717,6 +732,9 @@
     ZFREE(sqlreq_getbandwidth_ul);
     ZFREE(sqlreq_getbandwidth_dl);
 #endif
+#ifdef APPARMOR
+    ZFREE(sqlreq_getapparmor_hat);
+#endif
 }
 #else
 extern signed char v6ready;
diff -ur pure-ftpd-1.0.49.org/src/log_mysql_p.h pure-ftpd-1.0.49/src/log_mysql_p.h
--- pure-ftpd-1.0.49.org/src/log_mysql_p.h	2018-09-19 23:53:06.000000000 +0200
+++ pure-ftpd-1.0.49/src/log_mysql_p.h	2019-06-10 11:13:52.184467185 +0200
@@ -38,6 +38,9 @@
 static char *sqlreq_getbandwidth_ul;
 static char *sqlreq_getbandwidth_dl;
 #endif
+#ifdef APPARMOR
+static char *sqlreq_getapparmor_hat;
+#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 APPARMOR
+    { "MYSQLGetApparmorHat", &sqlreq_getapparmor_hat },
+#endif
     { NULL, NULL }
 };
 
diff -ur pure-ftpd-1.0.49.org/src/log_pam.c pure-ftpd-1.0.49/src/log_pam.c
--- pure-ftpd-1.0.49.org/src/log_pam.c	2019-04-02 16:00:40.000000000 +0200
+++ pure-ftpd-1.0.49/src/log_pam.c	2019-06-10 11:13:52.184467185 +0200
@@ -202,6 +202,9 @@
     (void) pam_close_session(pamh, PAM_SILENT);   /* It doesn't matter if it fails */
 #endif
     result->dir = dir;
+#ifdef APPARMOR
+    result->apparmor_hat = NULL;
+#endif
     dir = NULL;
     result->uid = pw.pw_uid;
     result->gid = pw.pw_gid;
diff -ur pure-ftpd-1.0.49.org/src/log_pgsql.c pure-ftpd-1.0.49/src/log_pgsql.c
--- pure-ftpd-1.0.49.org/src/log_pgsql.c	2019-06-10 11:13:16.120061167 +0200
+++ pure-ftpd-1.0.49/src/log_pgsql.c	2019-06-10 11:13:52.184467185 +0200
@@ -402,6 +402,9 @@
     const char *bandwidth_ul = NULL;   /* stored bandwidth UL */
     const char *bandwidth_dl = NULL;   /* stored bandwidth DL */
 #endif
+#ifdef APPARMOR
+    const char *apparmor_hat = NULL;   /* Apparmor hat name */
+#endif
     char *escaped_account = NULL;
     char *escaped_ip = NULL;
     char *escaped_port = NULL;
@@ -662,6 +665,15 @@
         }
     }
 #endif
+#ifdef APPARMOR
+    if ((apparmor_hat = pw_pgsql_getquery(id_sql_server, sqlreq_getapparmor_hat,
+                escaped_account, escaped_ip,
+                escaped_port, escaped_peer_ip,
+                escaped_decimal_ip)) != NULL) {
+        result->apparmor_hat = apparmor_hat;
+        apparmor_hat = NULL;
+    }
+#endif
     result->slow_tilde_expansion = 1;
     result->auth_ok = -result->auth_ok;
     bye:
@@ -692,6 +704,9 @@
     free((void *) bandwidth_ul);
     free((void *) bandwidth_dl);
 #endif
+#ifdef APPARMOR
+    free((void *) apparmor_hat);
+#endif
     free((void *) escaped_account);
     free((void *) escaped_ip);
     free((void *) escaped_port);
@@ -746,6 +761,9 @@
     ZFREE(sqlreq_getbandwidth_ul);
     ZFREE(sqlreq_getbandwidth_dl);
 #endif
+#ifdef APPARMOR
+    ZFREE(sqlreq_getapparmor_hat);
+#endif
 }
 #else
 extern signed char v6ready;
diff -ur pure-ftpd-1.0.49.org/src/log_pgsql_p.h pure-ftpd-1.0.49/src/log_pgsql_p.h
--- pure-ftpd-1.0.49.org/src/log_pgsql_p.h	2018-09-19 23:53:06.000000000 +0200
+++ pure-ftpd-1.0.49/src/log_pgsql_p.h	2019-06-10 11:13:52.184467185 +0200
@@ -28,6 +28,9 @@
 static char *sqlreq_getbandwidth_ul;
 static char *sqlreq_getbandwidth_dl;
 #endif
+#ifdef APPARMOR
+static char *sqlreq_getapparmor_hat;
+#endif
 static signed char server_down;
 
 static ConfigKeywords pgsql_config_keywords[] = {
@@ -55,6 +58,9 @@
     { "PGSQLGetBandwidthUL", &sqlreq_getbandwidth_ul },
     { "PGSQLGetBandwidthDL", &sqlreq_getbandwidth_dl },
 #endif
+#ifdef APPARMOR
+    { "PGSQLGetApparmorHat", &sqlreq_getapparmor_hat },
+#endif
     { NULL, NULL }
 };
 
diff -ur pure-ftpd-1.0.49.org/src/log_puredb.c pure-ftpd-1.0.49/src/log_puredb.c
--- pure-ftpd-1.0.49.org/src/log_puredb.c	2019-04-02 16:00:40.000000000 +0200
+++ pure-ftpd-1.0.49/src/log_puredb.c	2019-06-10 11:13:52.187800617 +0200
@@ -335,6 +335,9 @@
         result->user_quota_size = strtoull(line, NULL, 10);
     }
 #endif
+#ifdef APPARMOR
+    result->apparmor_hat = NULL;
+#endif
     if ((line = my_strtok2(NULL, *PW_LINE_SEP)) == NULL) {   /* allowed local ip */
         return 0;
     }
diff -ur pure-ftpd-1.0.49.org/src/log_unix.c pure-ftpd-1.0.49/src/log_unix.c
--- pure-ftpd-1.0.49.org/src/log_unix.c	2019-04-02 16:00:40.000000000 +0200
+++ pure-ftpd-1.0.49/src/log_unix.c	2019-06-10 11:13:52.187800617 +0200
@@ -87,6 +87,9 @@
     result->uid = pw.pw_uid;
     result->gid = pw.pw_gid;
     result->dir = dir;
+#ifdef APPARMOR
+    result->apparmor_hat = NULL;
+#endif
     result->slow_tilde_expansion = 0;
     result->auth_ok = -result->auth_ok;
     return;
diff -ur pure-ftpd-1.0.49.org/src/Makefile.am pure-ftpd-1.0.49/src/Makefile.am
--- pure-ftpd-1.0.49.org/src/Makefile.am	2019-03-25 16:48:42.000000000 +0100
+++ pure-ftpd-1.0.49/src/Makefile.am	2019-06-10 11:13:52.187800617 +0200
@@ -143,6 +143,7 @@
 pure_ftpd_LDADD = \
 	libpureftpd.a \
 	../puredb/src/libpuredb_read.a \
+	-lapparmor \
 	@LDAP_SSL_LIBS@ @GETLOADAVG_LIBS@ @BONJOUR_LDADD@
 
 pure_ftpd_SOURCES = \
diff -ur pure-ftpd-1.0.49.org/src/messages_en.h pure-ftpd-1.0.49/src/messages_en.h
--- pure-ftpd-1.0.49.org/src/messages_en.h	2019-06-10 11:13:16.126728032 +0200
+++ pure-ftpd-1.0.49/src/messages_en.h	2019-06-10 11:13:52.187800617 +0200
@@ -57,6 +57,7 @@
 #define MSG_CURRENT_DIR_IS "OK. Current directory is %s"
 #define MSG_CURRENT_RESTRICTED_DIR_IS "OK. Current restricted directory is %s"
 #define MSG_IS_NOW_LOGGED_IN "%s is now logged in"
+#define MSG_APPARMOR_HAT "User %s apparmor hat is %s"
 #define MSG_CANT_CHANGE_DIR "Can't change directory to %s"
 #define MSG_PATH_TOO_LONG "Path too long"
 #define MSG_CANT_PASV "You cannot use PASV on IPv6 connections. Use EPSV instead."