From: Greg Stein <gstein@apache.org>
Date: Thu, 24 Jan 2002 23:11:27 +0000 (+0000)
Subject: Some extra tweaks to the DAV code file/path handling (to continue the
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=641dcec5b7e46cc26bb57c40ac276a8f062cf1f8;p=apache

Some extra tweaks to the DAV code file/path handling (to continue the
platforms fixes done by wrowe).

* dav_fs_get_parent_resource(): return NULL if we're at the root of
    the URL (Location) space.

* dav_fs_dir_file_name(): make it return an error, in case we're
    passed a bad path. adjusted callers [who just ignore it for now]


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@93009 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/modules/dav/fs/dbm.c b/modules/dav/fs/dbm.c
index b2b1e8cc23..c4db7c453b 100644
--- a/modules/dav/fs/dbm.c
+++ b/modules/dav/fs/dbm.c
@@ -197,7 +197,8 @@ static dav_error * dav_dbm_open(apr_pool_t * p, const dav_resource *resource,
     const char *pathname;
 
     /* Get directory and filename for resource */
-    dav_fs_dir_file_name(resource, &dirpath, &fname);
+    /* ### should test this result value... */
+    (void) dav_fs_dir_file_name(resource, &dirpath, &fname);
 
     /* If not opening read-only, ensure the state dir exists */
     if (!ro) {
diff --git a/modules/dav/fs/lock.c b/modules/dav/fs/lock.c
index bfc37c2831..1d1c88c7b4 100644
--- a/modules/dav/fs/lock.c
+++ b/modules/dav/fs/lock.c
@@ -992,7 +992,8 @@ dav_error * dav_fs_get_locknull_members(
 {
     const char *dirpath;
 
-    dav_fs_dir_file_name(resource, &dirpath, NULL);
+    /* ### should test this result value... */
+    (void) dav_fs_dir_file_name(resource, &dirpath, NULL);
     return dav_fs_load_locknull_list(dav_fs_pool(resource), dirpath, pbuf);
 }
 
@@ -1008,7 +1009,8 @@ static dav_error * dav_fs_add_locknull_state(
     const char *fname;
     dav_error *err;
 
-    dav_fs_dir_file_name(resource, &dirpath, &fname);
+    /* ### should test this result value... */
+    (void) dav_fs_dir_file_name(resource, &dirpath, &fname);
 
     if ((err = dav_fs_load_locknull_list(p, dirpath, &buf)) != NULL) {
         return dav_push_error(p, HTTP_INTERNAL_SERVER_ERROR, 0,
diff --git a/modules/dav/fs/repos.c b/modules/dav/fs/repos.c
index 9b75d9fb3f..29203d4ffe 100644
--- a/modules/dav/fs/repos.c
+++ b/modules/dav/fs/repos.c
@@ -235,7 +235,7 @@ const char *dav_fs_pathname(const dav_resource *resource)
     return resource->info->pathname;
 }
 
-void dav_fs_dir_file_name(
+dav_error * dav_fs_dir_file_name(
     const dav_resource *resource,
     const char **dirpath_p,
     const char **fname_p)
@@ -283,10 +283,13 @@ void dav_fs_dir_file_name(
                 *fname_p = ctx->pathname + dirlen;
         }
         else {
-            if (fname_p != NULL)
-                *fname_p = NULL;
+            return dav_new_error(ctx->pool, HTTP_INTERNAL_SERVER_ERROR, 0,
+                                 "An incomplete/bad path was found in "
+                                 "dav_fs_dir_file_name.");
         }
     }
+
+    return NULL;
 }
 
 /* Note: picked up from ap_gm_timestr_822() */
@@ -530,8 +533,9 @@ static dav_error *dav_fs_copymoveset(int is_move, apr_pool_t *p,
     dav_error *err;
 
     /* Get directory and filename for resources */
-    dav_fs_dir_file_name(src, &src_dir, &src_file);
-    dav_fs_dir_file_name(dst, &dst_dir, &dst_file);
+    /* ### should test these result values... */
+    (void) dav_fs_dir_file_name(src, &src_dir, &src_file);
+    (void) dav_fs_dir_file_name(dst, &dst_dir, &dst_file);
 
     /* Get the corresponding state files for each resource */
     dav_dbm_get_statefiles(p, src_file, &src_state1, &src_state2);
@@ -582,7 +586,8 @@ static dav_error *dav_fs_deleteset(apr_pool_t *p, const dav_resource *resource)
     apr_status_t status;
 
     /* Get directory, filename, and state-file names for the resource */
-    dav_fs_dir_file_name(resource, &dirpath, &fname);
+    /* ### should test this result value... */
+    (void) dav_fs_dir_file_name(resource, &dirpath, &fname);
     dav_dbm_get_statefiles(p, fname, &state1, &state2);
 
     /* build the propset pathname for the file */
@@ -742,6 +747,12 @@ static dav_error * dav_fs_get_parent_resource(const dav_resource *resource,
     const char *testroot;
     const char *testpath;
 
+    /* If we're at the root of the URL space, then there is no parent. */
+    if (strcmp(resource->uri, "/") == 0) {
+        *result_parent = NULL;
+        return NULL;
+    }
+
     /* If given resource is root, then there is no parent.
      * Unless we can retrieve the filepath root, this is
      * intendend to fail.  If we split the root and
diff --git a/modules/dav/fs/repos.h b/modules/dav/fs/repos.h
index 828b17a973..0f283fb010 100644
--- a/modules/dav/fs/repos.h
+++ b/modules/dav/fs/repos.h
@@ -75,9 +75,9 @@ apr_pool_t *dav_fs_pool(const dav_resource *resource);
 const char *dav_fs_pathname(const dav_resource *resource);
 
 /* return the directory and filename for a resource */
-void dav_fs_dir_file_name(const dav_resource *resource,
-			  const char **dirpath,
-			  const char **fname);
+dav_error * dav_fs_dir_file_name(const dav_resource *resource,
+                                 const char **dirpath,
+                                 const char **fname);
 
 /* return the list of locknull members in this resource's directory */
 dav_error * dav_fs_get_locknull_members(const dav_resource *resource,