Update with checks for index bounds

2 files changed, 14 insertions, 2 deletions

diff --git a/src/H5PL.c b/src/H5PL.c
index 683c53d..9570289 100644
--- a/src/H5PL.c
+++ b/src/H5PL.c
@@ -485,6 +485,8 @@ H5PLreplace(const char* plugin_path, unsigned int index)
     FUNC_ENTER_API(FAIL)
     if(NULL == plugin_path)
         HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no path provided")
+    if(index >= H5PL_MAX_PATH_NUM)
+        HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "index path out of bounds for table")
     if(NULL == (dl_path = H5MM_strdup(plugin_path)))
         HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for path")
 
@@ -520,6 +522,8 @@ H5PLinsert(const char* plugin_path, unsigned int index)
         HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "too many directories in path for table")
     if(NULL == plugin_path)
         HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no path provided")
+    if(index >= H5PL_MAX_PATH_NUM)
+        HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "index path out of bounds for table")
     if(NULL == (dl_path = H5MM_strdup(plugin_path)))
         HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "can't allocate memory for path")
 
@@ -553,12 +557,15 @@ H5PLremove(unsigned int index)
     FUNC_ENTER_API(FAIL)
     if(H5PL_num_paths_g == 0)
         HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "no directories in table")
+    if(index >= H5PL_MAX_PATH_NUM)
+        HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "index path out of bounds for table")
     if(NULL == H5PL_path_table_g[index])
         HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no directory path at index")
     H5PL_path_table_g[index] = (char *)H5MM_xfree(H5PL_path_table_g[index]);
+
+    H5PL_num_paths_g--;
     for(plindex = index; plindex < (unsigned int)H5PL_num_paths_g; plindex++)
         H5PL_path_table_g[plindex] = H5PL_path_table_g[plindex + 1];
-    H5PL_num_paths_g--;
     H5PL_path_table_g[H5PL_num_paths_g] = NULL;
 
 done:
@@ -594,6 +601,8 @@ H5PLget(unsigned int index, char *pathname/*out*/, size_t size)
     FUNC_ENTER_API(FAIL)
     if(H5PL_num_paths_g == 0)
         HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "no directories in table")
+    if(index >= H5PL_MAX_PATH_NUM)
+        HGOTO_ERROR(H5E_PLUGIN, H5E_NOSPACE, FAIL, "index path out of bounds for table")
     if(NULL == (dl_path = H5PL_path_table_g[index]))
         HGOTO_ERROR(H5E_PLUGIN, H5E_CANTALLOC, FAIL, "no directory path at index")
     len = HDstrlen(dl_path);
diff --git a/test/plugin.c b/test/plugin.c
index 2e5319d..a706476 100644
--- a/test/plugin.c
+++ b/test/plugin.c
@@ -750,6 +750,8 @@ test_filter_path_apis(void)
 
     HDputs("Testing access to the filter path table");
 
+    if(H5Zfilter_avail(H5Z_FILTER_DYNLIB1) != TRUE) TEST_ERROR
+
     ndx = H5PLsize();
 
     TESTING("    remove");
@@ -764,7 +766,7 @@ test_filter_path_apis(void)
     if (H5PLsize() > 0) TEST_ERROR
     PASSED();
 
-    TESTING("    remove (exceed)");
+    TESTING("    remove (exceed min)");
     /* Exceed the min path removal */
     H5E_BEGIN_TRY {
         ret = H5PLremove(0);
@@ -795,6 +797,7 @@ test_filter_path_apis(void)
     if (ret >= 0)
         TEST_ERROR
 
+    TESTING("    remove (exceed max)");
     /* Exceed the max path removal */
     H5E_BEGIN_TRY {
         ret = H5PLremove(H5PL_MAX_PATH_NUM);