* Added mod_ucam_none.c

mod_ucam_none.c

@@ -0,0 +1,156 @@
+/* 
+
+   This file is part of the University of Cambridge Web Authentication 
+   System Application Agent for Apache 1.3 and 2
+   See http://raven.cam.ac.uk/ for more details
+
+   Copyright (c) University of Cambridge 2005
+
+   This application agent is free software; you can redistribute it
+   and/or modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The agent is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+  
+   You should have received a copy of the GNU Lesser General Public
+   License along with this toolkit; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+   USA
+
+   $Id: mod_ucam_none.c,v 1.1 2005-05-18 15:30:43 jw35 Exp $
+
+   Author: Jon Warbrick <jw35@cam.ac.uk>
+
+*/
+
+#define VERSION "0.0.1"
+
+#include <string.h>
+
+#include "httpd.h"
+#include "http_config.h"
+#include "http_core.h"
+#include "http_log.h"
+
+#if defined APACHE_RELEASE && APACHE_RELEASE < 20000000
+#define APACHE1_3
+#endif
+
+/* logging macro. Note that it will only work in an environment where
+   'r' holds a copy of the current request record */
+
+#ifdef APACHE1_3
+#define APACHE_LOG0(level, fmt) \
+  ap_log_rerror(APLOG_MARK, level | APLOG_NOERRNO, r, fmt)
+#define APACHE_LOG1(level, fmt, a) \
+  ap_log_rerror(APLOG_MARK, level | APLOG_NOERRNO, r, fmt, a)
+#define APACHE_LOG2(level, fmt, a, b) \
+  ap_log_rerror(APLOG_MARK, level | APLOG_NOERRNO, r, fmt, a, b)
+#else
+#define APACHE_LOG0(level, fmt) \
+  ap_log_rerror(APLOG_MARK, level, 0, r, fmt)
+#define APACHE_LOG1(level, fmt, a) \
+  ap_log_rerror(APLOG_MARK, level, 0, r, fmt, a)
+#define APACHE_LOG2(level, fmt, a, b) \
+  ap_log_rerror(APLOG_MARK, level, 0, r, fmt, a, b)
+#endif
+
+/* Almost all of the code is written as for Apache 2. The folowing
+   macros adapt it for Apache 1.3 if necessary */
+
+#ifdef APACHE1_3
+#define AP_MODULE_DECLARE_DATA MODULE_VAR_EXPORT
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+/* Standard forward declaration of the module structure since
+   _something_ is bound to need it before it's defined at the end */
+
+module AP_MODULE_DECLARE_DATA ucam_none_module;
+
+/* Auth handler */
+
+static int  
+none_authn(request_rec *r) 
+
+{
+
+  const char *t;
+
+  if (!(t = ap_auth_type(r)) || strcasecmp(t, "None")) {
+    APACHE_LOG2
+      (APLOG_DEBUG,"mod_ucam_none declining authn for %s (AuthType = %s)",
+       r->uri, ap_auth_type(r) == NULL ? "(null)" : ap_auth_type(r));
+    return DECLINED;
+  }
+
+  APACHE_LOG1(APLOG_DEBUG,"mod_ucam_none accepting authn for %s ", r->uri);
+
+#ifdef APACHE1_3
+  r->connection->user = "nobody";
+  r->connection->ap_auth_type = "None";
+#else
+  r->user = "nobody";
+  r->ap_auth_type = "None";
+#endif
+
+  return OK;
+
+}
+
+/* ---------------------------------------------------------------------- */
+
+/* make Apache aware of the handlers */
+
+#ifdef APACHE1_3
+
+module MODULE_VAR_EXPORT ucam_none_module = {
+  STANDARD_MODULE_STUFF,
+  NULL,                         /* initializer */
+  NULL,                         /* dir config creator */
+  NULL,                         /* dir merger --- default is to override */
+  NULL,                         /* server config */
+  NULL,                         /* merge server config */
+  NULL,                         /* command table */
+  NULL,                         /* handlers */
+  NULL,                         /* filename translation */
+  none_authn,                   /* check_user_id */
+  NULL,                         /* check auth */
+  NULL,                         /* check access */
+  NULL,                         /* type_checker */
+  NULL,                         /* fixups */
+  NULL,                         /* logger */
+  NULL,                         /* header parser */
+  NULL,                         /* child_init */
+  NULL,                         /* child_exit */
+  NULL                          /* post read-request */
+};
+
+#else
+
+static void none_register_hooks(apr_pool_t *p) {
+  ap_hook_check_user_id
+    (none_authn, NULL, NULL, APR_HOOK_MIDDLE);
+}
+
+module AP_MODULE_DECLARE_DATA ucam_none_module = {
+  STANDARD20_MODULE_STUFF,
+  NULL,                         /* create per-directory config structures */
+  NULL,                         /* merge per-directory config structures  */
+  NULL,                         /* create per-server config structures    */
+  NULL,                         /* merge per-server config structures     */
+  NULL,                         /* command handlers */
+  none_register_hooks           /* register hooks */
+};
+
+#endif
+
+/* ---------------------------------------------------------------------- */
+
+
+