add dirwalk_stat hook, for use by mpm-itk

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1388447 13f79535-47bb-0310-9956-ffa450edef68

5 files changed, 30 insertions, 9 deletions

diff --git a/CHANGES b/CHANGES
index 48b8967937..af819cbeb2 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,6 +1,8 @@
                                                          -*- coding: utf-8 -*-
 Changes with Apache 2.5.0
 
+  *) core: Add dirwalk_stat hook.  [Jeff Trawick]
+
   *) mod_proxy: Allow for persistence of local changes (via the
      balancer-manager) between graceful and normal restarts.
      [Jim Jagielski]
diff --git a/include/ap_mmn.h b/include/ap_mmn.h
index a39d86a00b..01c750f12c 100644
--- a/include/ap_mmn.h
+++ b/include/ap_mmn.h
@@ -401,6 +401,7 @@
  * 20120724.1 (2.5.0-dev)  Add post_perdir_config hook.
  * 20120724.2 (2.5.0-dev)  Add fgrab slotmem function to struct
  * 20120724.3 (2.5.0-dev)  Add bal_persist, inherit to proxy_server_conf
+ * 20120724.4 (2.5.0-dev)  Add dirwalk_stat hook.
  */
 
 #define MODULE_MAGIC_COOKIE 0x41503235UL /* "AP25" */
@@ -408,7 +409,7 @@
 #ifndef MODULE_MAGIC_NUMBER_MAJOR
 #define MODULE_MAGIC_NUMBER_MAJOR 20120724
 #endif
-#define MODULE_MAGIC_NUMBER_MINOR 3                   /* 0...n */
+#define MODULE_MAGIC_NUMBER_MINOR 4                   /* 0...n */
 
 /**
  * Determine if the server's current MODULE_MAGIC_NUMBER is at least a
diff --git a/include/http_request.h b/include/http_request.h
index 086e930871..1884fbef22 100644
--- a/include/http_request.h
+++ b/include/http_request.h
@@ -538,6 +538,15 @@ AP_DECLARE_HOOK(void,insert_filter,(request_rec *r))
  */
 AP_DECLARE_HOOK(int,post_perdir_config,(request_rec *r))
 
+/**
+ * This hook allows modules to handle/emulate the apr_stat() calls
+ * needed for directory walk.
+ * @param r The current request
+ * @return apr_status_t or AP_DECLINED (let later modules decide)
+ * @ingroup hooks
+ */
+AP_DECLARE_HOOK(apr_status_t,dirwalk_stat,(apr_finfo_t *finfo, request_rec *r, apr_int32_t wanted))
+
 AP_DECLARE(int) ap_location_walk(request_rec *r);
 AP_DECLARE(int) ap_directory_walk(request_rec *r);
 AP_DECLARE(int) ap_file_walk(request_rec *r);
diff --git a/server/core.c b/server/core.c
index 5d0e12d668..82863460b5 100644
--- a/server/core.c
+++ b/server/core.c
@@ -4779,6 +4779,12 @@ static apr_status_t core_insert_network_bucket(conn_rec *c,
     return APR_SUCCESS;
 }
 
+static apr_status_t core_dirwalk_stat(apr_finfo_t *finfo, request_rec *r,
+                                      apr_int32_t wanted) 
+{
+    return apr_stat(finfo, r->filename, wanted, r->pool);
+}
+
 static void core_dump_config(apr_pool_t *p, server_rec *s)
 {
     core_server_config *sconf = ap_get_core_module_config(s->module_config);
@@ -4855,7 +4861,8 @@ static void register_hooks(apr_pool_t *p)
     ap_hook_child_status(ap_core_child_status, NULL, NULL, APR_HOOK_MIDDLE);
     ap_hook_insert_network_bucket(core_insert_network_bucket, NULL, NULL,
                                   APR_HOOK_REALLY_LAST);
-
+    ap_hook_dirwalk_stat(core_dirwalk_stat, NULL, NULL, APR_HOOK_REALLY_LAST);
+    
     /* register the core's insert_filter hook and register core-provided
      * filters
      */
diff --git a/server/request.c b/server/request.c
index a6fb1cb11b..6e5c00a23e 100644
--- a/server/request.c
+++ b/server/request.c
@@ -70,6 +70,7 @@ APR_HOOK_STRUCT(
     APR_HOOK_LINK(insert_filter)
     APR_HOOK_LINK(create_request)
     APR_HOOK_LINK(post_perdir_config)
+    APR_HOOK_LINK(dirwalk_stat)
 )
 
 AP_IMPLEMENT_HOOK_RUN_FIRST(int,translate_name,
@@ -93,6 +94,9 @@ AP_IMPLEMENT_HOOK_RUN_ALL(int, create_request,
                           (request_rec *r), (r), OK, DECLINED)
 AP_IMPLEMENT_HOOK_RUN_ALL(int, post_perdir_config,
                           (request_rec *r), (r), OK, DECLINED)
+AP_IMPLEMENT_HOOK_RUN_FIRST(apr_status_t,dirwalk_stat,
+                            (apr_finfo_t *finfo, request_rec *r, apr_int32_t wanted),
+                            (finfo, r, wanted), AP_DECLINED)
 
 static int auth_internal_per_conf = 0;
 static int auth_internal_per_conf_hooks = 0;
@@ -609,7 +613,7 @@ AP_DECLARE(int) ap_directory_walk(request_rec *r)
      * with APR_ENOENT, knowing that the path is good.
      */
     if (r->finfo.filetype == APR_NOFILE || r->finfo.filetype == APR_LNK) {
-        rv = apr_stat(&r->finfo, r->filename, APR_FINFO_MIN, r->pool);
+        rv = ap_run_dirwalk_stat(&r->finfo, r, APR_FINFO_MIN);
 
         /* some OSs will return APR_SUCCESS/APR_REG if we stat
          * a regular file but we have '/' at the end of the name;
@@ -675,9 +679,8 @@ AP_DECLARE(int) ap_directory_walk(request_rec *r)
              * check.
              */
             if (!(opts & OPT_SYM_LINKS)) {
-                rv = apr_stat(&thisinfo, r->filename,
-                              APR_FINFO_MIN | APR_FINFO_NAME | APR_FINFO_LINK,
-                              r->pool);
+                rv = ap_run_dirwalk_stat(&thisinfo, r,
+                                         APR_FINFO_MIN | APR_FINFO_NAME | APR_FINFO_LINK);
                 /*
                  * APR_INCOMPLETE is as fine as result as APR_SUCCESS as we
                  * have added APR_FINFO_NAME to the wanted parameter of
@@ -1092,9 +1095,8 @@ AP_DECLARE(int) ap_directory_walk(request_rec *r)
              * the name of its target, if we are fixing the filename
              * case/resolving aliases.
              */
-            rv = apr_stat(&thisinfo, r->filename,
-                          APR_FINFO_MIN | APR_FINFO_NAME | APR_FINFO_LINK,
-                          r->pool);
+            rv = ap_run_dirwalk_stat(&thisinfo, r,
+                                     APR_FINFO_MIN | APR_FINFO_NAME | APR_FINFO_LINK);
 
             if (APR_STATUS_IS_ENOENT(rv)) {
                 /* Nothing?  That could be nice.  But our directory