[glib/wip/2-58-cve-2021-27219: 4/8] gobject: Use g_memdup2() instead of g_memdup() in obvious places

[Simon McVittie <smcv src gnome org>]

commit c921c82636681575be9a2669c1d7d8de1add43cd
Author: Philip Withnall <pwithnall endlessos org>
Date:   Thu Feb 4 13:39:25 2021 +0000

    gobject: Use g_memdup2() instead of g_memdup() in obvious places
    
    Convert all the call sites which use `g_memdup()`’s length argument
    trivially (for example, by passing a `sizeof()`), so that they use
    `g_memdup2()` instead.
    
    In almost all of these cases the use of `g_memdup()` would not have
    caused problems, but it will soon be deprecated, so best port away from
    it.
    
    Signed-off-by: Philip Withnall <pwithnall endlessos org>
    Helps: #2319
    (cherry picked from commit 6110caea45b235420b98cd41d845cc92238f6781)

 gobject/gsignal.c     | 3 ++-
 gobject/gtype.c       | 9 +++++----
 gobject/gtypemodule.c | 3 ++-
 gobject/tests/param.c | 4 +++-
 4 files changed, 12 insertions(+), 7 deletions(-)
---
diff --git a/gobject/gsignal.c b/gobject/gsignal.c
index 76f1dc93c..4296eb290 100644
--- a/gobject/gsignal.c
+++ b/gobject/gsignal.c
@@ -28,6 +28,7 @@
 #include <signal.h>
 
 #include "gsignal.h"
+#include "gstrfuncsprivate.h"
 #include "gtype-private.h"
 #include "gbsearcharray.h"
 #include "gvaluecollector.h"
@@ -1724,7 +1725,7 @@ g_signal_newv (const gchar       *signal_name,
   node->single_va_closure_is_valid = FALSE;
   node->flags = signal_flags & G_SIGNAL_FLAGS_MASK;
   node->n_params = n_params;
-  node->param_types = g_memdup (param_types, sizeof (GType) * n_params);
+  node->param_types = g_memdup2 (param_types, sizeof (GType) * n_params);
   node->return_type = return_type;
   node->class_closure_bsa = NULL;
   if (accumulator)
diff --git a/gobject/gtype.c b/gobject/gtype.c
index 1acc0a075..bee83bdf5 100644
--- a/gobject/gtype.c
+++ b/gobject/gtype.c
@@ -33,6 +33,7 @@
 
 #include "glib-private.h"
 #include "gconstructor.h"
+#include "gstrfuncsprivate.h"
 
 #ifdef G_OS_WIN32
 #include <windows.h>
@@ -1467,7 +1468,7 @@ type_add_interface_Wm (TypeNode             *node,
   iholder->next = iface_node_get_holders_L (iface);
   iface_node_set_holders_W (iface, iholder);
   iholder->instance_type = NODE_TYPE (node);
-  iholder->info = info ? g_memdup (info, sizeof (*info)) : NULL;
+  iholder->info = info ? g_memdup2 (info, sizeof (*info)) : NULL;
   iholder->plugin = plugin;
 
   /* create an iface entry for this type */
@@ -1728,7 +1729,7 @@ type_iface_retrieve_holder_info_Wm (TypeNode *iface,
         INVALID_RECURSION ("g_type_plugin_*", iholder->plugin, NODE_NAME (iface));
       
       check_interface_info_I (iface, instance_type, &tmp_info);
-      iholder->info = g_memdup (&tmp_info, sizeof (tmp_info));
+      iholder->info = g_memdup2 (&tmp_info, sizeof (tmp_info));
     }
   
   return iholder;      /* we don't modify write lock upon returning NULL */
@@ -2013,10 +2014,10 @@ type_iface_vtable_base_init_Wm (TypeNode *iface,
       IFaceEntry *pentry = type_lookup_iface_entry_L (pnode, iface);
       
       if (pentry)
-       vtable = g_memdup (pentry->vtable, iface->data->iface.vtable_size);
+       vtable = g_memdup2 (pentry->vtable, iface->data->iface.vtable_size);
     }
   if (!vtable)
-    vtable = g_memdup (iface->data->iface.dflt_vtable, iface->data->iface.vtable_size);
+    vtable = g_memdup2 (iface->data->iface.dflt_vtable, iface->data->iface.vtable_size);
   entry->vtable = vtable;
   vtable->g_type = NODE_TYPE (iface);
   vtable->g_instance_type = NODE_TYPE (node);
diff --git a/gobject/gtypemodule.c b/gobject/gtypemodule.c
index 4ecaf8c88..20911fafd 100644
--- a/gobject/gtypemodule.c
+++ b/gobject/gtypemodule.c
@@ -19,6 +19,7 @@
 
 #include <stdlib.h>
 
+#include "gstrfuncsprivate.h"
 #include "gtypeplugin.h"
 #include "gtypemodule.h"
 
@@ -436,7 +437,7 @@ g_type_module_register_type (GTypeModule     *module,
   module_type_info->loaded = TRUE;
   module_type_info->info = *type_info;
   if (type_info->value_table)
-    module_type_info->info.value_table = g_memdup (type_info->value_table,
+    module_type_info->info.value_table = g_memdup2 (type_info->value_table,
                                                   sizeof (GTypeValueTable));
 
   return module_type_info->type;
diff --git a/gobject/tests/param.c b/gobject/tests/param.c
index 758289bf8..971cff162 100644
--- a/gobject/tests/param.c
+++ b/gobject/tests/param.c
@@ -2,6 +2,8 @@
 #include <glib-object.h>
 #include <stdlib.h>
 
+#include "gstrfuncsprivate.h"
+
 static void
 test_param_value (void)
 {
@@ -851,7 +853,7 @@ main (int argc, char *argv[])
             test_path = g_strdup_printf ("/param/implement/subprocess/%d-%d-%d-%d",
                                          data.change_this_flag, data.change_this_type,
                                          data.use_this_flag, data.use_this_type);
-            test_data = g_memdup (&data, sizeof (TestParamImplementData));
+            test_data = g_memdup2 (&data, sizeof (TestParamImplementData));
             g_test_add_data_func_full (test_path, test_data, test_param_implement_child, g_free);
             g_free (test_path);
           }