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authorCyrille Bagard <nocbos@gmail.com>2019-02-09 13:01:58 (GMT)
committerCyrille Bagard <nocbos@gmail.com>2019-02-09 13:01:58 (GMT)
commit5863af232b8fc57de210702afe659a7383bb8840 (patch)
tree18e6fd0fb7be2f01d23cda34f8d7b3f29b1a250b
parent32bef30025f5e3f513c2b4936c0573cc3b629961 (diff)
Fixed another batch of memory leaks.
-rw-r--r--plugins/arm/v7/fetch.c3
-rw-r--r--plugins/itanium/component.c13
-rw-r--r--plugins/pychrysalide/access.c22
-rw-r--r--plugins/pychrysalide/access.h3
-rw-r--r--plugins/pychrysalide/analysis/project.c3
-rw-r--r--plugins/pychrysalide/helpers.c4
-rw-r--r--plugins/pychrysalide/plugin.c37
-rw-r--r--plugins/pychrysalide/pychrysa.c24
-rw-r--r--src/analysis/db/collection.c14
-rw-r--r--src/analysis/project.c3
-rw-r--r--src/analysis/routine.c6
-rw-r--r--src/gleak.c137
-rw-r--r--src/gleak.h2
-rw-r--r--src/main.c4
-rw-r--r--src/plugins/plugin-def.h20
15 files changed, 264 insertions, 31 deletions
diff --git a/plugins/arm/v7/fetch.c b/plugins/arm/v7/fetch.c
index 0aa0c6c..6252990 100644
--- a/plugins/arm/v7/fetch.c
+++ b/plugins/arm/v7/fetch.c
@@ -498,6 +498,9 @@ void help_fetching_with_instruction_ldr_literal_with_orig(GArchInstruction *inst
{
g_db_comment_add_static_text(comment, "\n");
g_db_comment_add_dynamic_text(comment, desc);
+
+ g_object_unref(G_OBJECT(comment));
+
}
else
diff --git a/plugins/itanium/component.c b/plugins/itanium/component.c
index 5ebfeb9..7510b42 100644
--- a/plugins/itanium/component.c
+++ b/plugins/itanium/component.c
@@ -1408,8 +1408,17 @@ GDataType *itd_translate_component_to_type(const itanium_component *comp)
result = itd_translate_component_to_type(comp->binary.right);
- if (result != NULL && ns != NULL)
- itd_prepend_namespace_to_type(result, ns);
+ if (result != NULL)
+ {
+ if (ns != NULL)
+ itd_prepend_namespace_to_type(result, ns);
+ }
+
+ else
+ {
+ if (ns != NULL)
+ g_object_unref(G_OBJECT(ns));
+ }
}
diff --git a/plugins/pychrysalide/access.c b/plugins/pychrysalide/access.c
index bfaf160..4efa9c7 100644
--- a/plugins/pychrysalide/access.c
+++ b/plugins/pychrysalide/access.c
@@ -95,8 +95,6 @@ void register_access_to_python_module(const char *path, PyObject *mod)
access.path = path;
access.mod = mod;
- Py_INCREF(mod);
-
_pychrysalide_modules = qinsert(_pychrysalide_modules, &_pychrysalide_count,
sizeof(module_access), (__compar_fn_t)compare_python_module_accesses,
&access);
@@ -135,3 +133,23 @@ PyObject *get_access_to_python_module(const char *path)
return result;
}
+
+
+/******************************************************************************
+* *
+* Paramètres : - *
+* *
+* Description : Supprime tous les accès rapide aux modules Python. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+void clear_all_accesses_to_python_modules(void)
+{
+ if (_pychrysalide_modules != NULL)
+ free(_pychrysalide_modules);
+
+}
diff --git a/plugins/pychrysalide/access.h b/plugins/pychrysalide/access.h
index 492664d..9a842e4 100644
--- a/plugins/pychrysalide/access.h
+++ b/plugins/pychrysalide/access.h
@@ -35,6 +35,9 @@ void register_access_to_python_module(const char *, PyObject *);
/* Fournit la référence à un module Python défini. */
PyObject *get_access_to_python_module(const char *path);
+/* Supprime tous les accès rapide aux modules Python. */
+void clear_all_accesses_to_python_modules(void);
+
#endif /* _PLUGINS_PYCHRYSALIDE_ACCESS_H */
diff --git a/plugins/pychrysalide/analysis/project.c b/plugins/pychrysalide/analysis/project.c
index 9046bf3..98610d5 100644
--- a/plugins/pychrysalide/analysis/project.c
+++ b/plugins/pychrysalide/analysis/project.c
@@ -308,6 +308,9 @@ static PyObject *py_study_project_get_contents(PyObject *self, void *closure)
}
+ if (contents != NULL)
+ free(contents);
+
return result;
}
diff --git a/plugins/pychrysalide/helpers.c b/plugins/pychrysalide/helpers.c
index f744475..48b805c 100644
--- a/plugins/pychrysalide/helpers.c
+++ b/plugins/pychrysalide/helpers.c
@@ -434,6 +434,8 @@ bool register_python_module_methods(PyObject *module, PyMethodDef *defs)
if (result)
{
+ Py_INCREF(item);
+
ret = PyDict_SetItemString(features_dict, iter->ml_name, item);
result = (ret == 0);
assert(result);
@@ -483,6 +485,8 @@ static bool include_python_type_into_features(PyObject *dict, PyTypeObject *type
result = (item != NULL);
assert(result);
+ Py_INCREF(item);
+
ret = PyDict_SetItemString(features_dict, name, item);
result = (ret == 0);
assert(result);
diff --git a/plugins/pychrysalide/plugin.c b/plugins/pychrysalide/plugin.c
index 51da910..9352924 100644
--- a/plugins/pychrysalide/plugin.c
+++ b/plugins/pychrysalide/plugin.c
@@ -94,9 +94,6 @@ struct _GPythonPlugin
{
GPluginModule parent; /* Instance parente */
- PyObject *module; /* Script Python chargé */
- PyObject *instance; /* Instance Python du greffon */
-
};
@@ -551,6 +548,8 @@ static void py_plugin_module_handle_binary_content_wrapper(const GPluginModule *
Py_XDECREF(value);
Py_DECREF(args);
+ Py_DECREF(pyobj);
+
PyGILState_Release(gstate);
}
@@ -597,6 +596,8 @@ static void py_plugin_module_handle_loaded_content_wrapper(const GPluginModule *
Py_XDECREF(value);
Py_DECREF(args);
+ Py_DECREF(pyobj);
+
PyGILState_Release(gstate);
}
@@ -643,6 +644,8 @@ static bool py_plugin_module_handle_binary_format_analysis_wrapper(const GPlugin
Py_XDECREF(value);
Py_DECREF(args);
+ Py_DECREF(pyobj);
+
PyGILState_Release(gstate);
return true;
@@ -691,6 +694,8 @@ static bool py_plugin_module_preload_binary_format_wrapper(const GPluginModule *
Py_XDECREF(value);
Py_DECREF(args);
+ Py_DECREF(pyobj);
+
PyGILState_Release(gstate);
return true;
@@ -735,6 +740,8 @@ static void py_plugin_module_attach_debug_format_wrapper(const GPluginModule *pl
Py_XDECREF(value);
Py_DECREF(args);
+ Py_DECREF(pyobj);
+
PyGILState_Release(gstate);
}
@@ -781,6 +788,8 @@ static void py_plugin_module_process_disassembly_event_wrapper(const GPluginModu
Py_XDECREF(value);
Py_DECREF(args);
+ Py_DECREF(pyobj);
+
PyGILState_Release(gstate);
}
@@ -903,9 +912,6 @@ static void g_python_plugin_dispose(GPythonPlugin *plugin)
if (tstate != NULL)
PyEval_RestoreThread(tstate);
- Py_XDECREF(plugin->instance);
- plugin->instance = NULL;
-
if (tstate != NULL)
PyEval_SaveThread();
@@ -930,15 +936,20 @@ static void g_python_plugin_finalize(GPythonPlugin *plugin)
{
plugin_interface *final; /* Interface finale conservée */
- Py_XDECREF(plugin->module);
-
final = (plugin_interface *)G_PLUGIN_MODULE(plugin)->interface;
if (final != NULL)
{
+ free(final->name);
+ free(final->desc);
+ free(final->version);
+
assert(final->required_count == 1);
free(final->required);
+ if (final->actions != NULL)
+ free(final->actions);
+
free(final);
}
@@ -1025,10 +1036,14 @@ GPluginModule *g_python_plugin_new(const char *modname, const char *filename)
G_PLUGIN_MODULE(result)->filename = strdup(filename);
- result->module = module;
- result->instance = instance;
+ /**
+ * L'instance Python et l'objet GLib résultante sont un même PyGObject.
+ *
+ * Donc pas besoin de toucher au comptage des références ici, la libération
+ * se réalisera à la fin, quand l'objet GLib sera libéré.
+ */
- Py_INCREF(instance);
+ Py_DECREF(module);
return G_PLUGIN_MODULE(result);
diff --git a/plugins/pychrysalide/pychrysa.c b/plugins/pychrysalide/pychrysa.c
index 4cb18d9..3e14add 100644
--- a/plugins/pychrysalide/pychrysa.c
+++ b/plugins/pychrysalide/pychrysa.c
@@ -306,13 +306,22 @@ static bool set_version_for_gtk_namespace(const char *version)
static void PyExit_pychrysalide(void)
{
+ assert(_standalone);
+
extern void set_current_project(void *project);
set_current_project(NULL);
#ifdef TRACK_GOBJECT_LEAKS
- if (_standalone)
- dump_remaining_gtypes();
+ remember_gtypes_for_leaks();
+#endif
+
+ exit_all_plugins();
+
+ unload_all_basic_components();
+
+#ifdef TRACK_GOBJECT_LEAKS
+ dump_remaining_gtypes();
#endif
}
@@ -500,7 +509,12 @@ PyMODINIT_FUNC PyInit_pychrysalide(void)
load_remaning_plugins();
- g_object_unref(G_OBJECT(self));
+ /**
+ * On laisse fuir ici la référence sur self afin d'avoir
+ * l'assurance que le greffon se déchargera toujours en dernier.
+ *
+ * La fuite mémoire est au final évitée dans PyExit_pychrysalide().
+ */
}
@@ -657,6 +671,8 @@ static void load_python_plugins(GPluginModule *plugin)
}
+ free(paths);
+
}
@@ -737,6 +753,8 @@ G_MODULE_EXPORT bool chrysalide_plugin_init(GPluginModule *plugin)
G_MODULE_EXPORT void chrysalide_plugin_exit(GPluginModule *plugin)
{
+ clear_all_accesses_to_python_modules();
+
Py_XDECREF(_chrysalide_module);
}
diff --git a/src/analysis/db/collection.c b/src/analysis/db/collection.c
index 9c28c4a..0a617f3 100644
--- a/src/analysis/db/collection.c
+++ b/src/analysis/db/collection.c
@@ -149,6 +149,18 @@ static void g_db_collection_init(GDbCollection *collec)
static void g_db_collection_dispose(GDbCollection *collec)
{
+ if (collec->items != NULL)
+ {
+ g_list_free_full(collec->items, g_object_unref);
+ collec->items = NULL;
+ }
+
+ if (collec->sorted != NULL)
+ {
+ g_list_free_full(collec->sorted, g_object_unref);
+ collec->sorted = NULL;
+ }
+
G_OBJECT_CLASS(g_db_collection_parent_class)->dispose(G_OBJECT(collec));
}
@@ -1130,6 +1142,8 @@ bool g_db_collection_load_all_items(GDbCollection *collec, sqlite3 *db)
result = g_db_item_load(new, values, count);
result &= g_db_collection_add_item(G_DB_COLLECTION(collec), new);
+ g_object_unref(G_OBJECT(new));
+
}
/* Sortie propre */
diff --git a/src/analysis/project.c b/src/analysis/project.c
index 6156fbc..57ebcc6 100644
--- a/src/analysis/project.c
+++ b/src/analysis/project.c
@@ -1345,6 +1345,9 @@ static void on_new_content_resolved(GContentResolver *resolver, wgroup_id_t wid,
}
+ if (handler->filter != NULL)
+ handler->filter(NULL, handler->data);
+
}
else
diff --git a/src/analysis/routine.c b/src/analysis/routine.c
index 8b49456..d206e5e 100644
--- a/src/analysis/routine.c
+++ b/src/analysis/routine.c
@@ -539,12 +539,8 @@ GDataType *g_binary_routine_get_return_type(const GBinRoutine *routine)
void g_binary_routine_add_arg(GBinRoutine *routine, GBinVariable *var)
{
- routine->args_count++;
+ routine->args = realloc(routine->args, ++routine->args_count * sizeof(GBinVariable *));
- routine->args = (GBinVariable **)realloc(routine->args,
- routine->args_count * sizeof(GBinVariable *));
-
- g_object_ref(G_OBJECT(var));
routine->args[routine->args_count - 1] = var;
}
diff --git a/src/gleak.c b/src/gleak.c
index 3212d9f..4423cbb 100644
--- a/src/gleak.c
+++ b/src/gleak.c
@@ -24,10 +24,12 @@
#include "gleak.h"
+#include <assert.h>
#include <glib-object.h>
#include <malloc.h>
#include <stdbool.h>
#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
@@ -39,12 +41,122 @@
#define DUMP_CLOSE_MSG "\n----------------------------------------------\n\n"
+/* Description de type utilisé */
+typedef struct _tracked_gtype_t
+{
+ GType type; /* Type GLib représenté */
+ char *name; /* Désignation humaine */
+
+} tracked_gtype_t;
+
+/* Conservation des types même sans les greffons associés */
+static tracked_gtype_t *__tracking = NULL;
+static size_t __count = 0;
+
+
+/* Effectue une comparaison entre deux mémorisations de GTypes. */
+static int compare_gtypes_for_leaks(const tracked_gtype_t *, const tracked_gtype_t *);
+
+/* Constitue une base de données de nom de tous les GTypes. */
+static void _remember_gtypes_for_leaks(GType);
/* Parcourt l'arborescence des types à la recherche de fuites. */
static void track_gtype_for_leak(GType, bool *);
+
+/******************************************************************************
+* *
+* Paramètres : a = première description à comparer. *
+* b = seconde description à comparer. *
+* *
+* Description : Effectue une comparaison entre deux mémorisations de GTypes. *
+* *
+* Retour : Bilan de l'opération (-1, 0 ou 1). *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static int compare_gtypes_for_leaks(const tracked_gtype_t *a, const tracked_gtype_t *b)
+{
+ int result; /* Bilan à retourner */
+
+ if (a->type < b->type)
+ result = -1;
+
+ else if (a->type > b->type)
+ result = 1;
+
+ else
+ result = 0;
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : root = racine des types d'instance à parcourir. *
+* *
+* Description : Constitue une base de données de nom de tous les GTypes. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void _remember_gtypes_for_leaks(GType root)
+{
+ GType *children; /* Liste de tous les sous-types*/
+ guint count; /* Taille de cette liste */
+ tracked_gtype_t *new; /* Nouvelle feuille à mémoriser*/
+ GType *iter; /* Boucle de parcours */
+
+ children = g_type_children(root, &count);
+
+ if (count == 0)
+ {
+ __tracking = realloc(__tracking, ++__count * sizeof(tracked_gtype_t));
+
+ new = &__tracking[__count - 1];
+
+ new->type = root;
+ new->name = strdup(g_type_name(root));
+
+ }
+
+ else
+ for (iter = children; *iter != 0; iter++)
+ _remember_gtypes_for_leaks(*iter);
+
+ g_free(children);
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : root = racine des types d'instance à parcourir. *
+* *
+* Description : Constitue une base de données de nom de tous les GTypes. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+void remember_gtypes_for_leaks(void)
+{
+ _remember_gtypes_for_leaks(G_TYPE_OBJECT);
+
+}
+
+
/******************************************************************************
* *
* Paramètres : root = racine des types d'instance à retrouver. *
@@ -62,8 +174,9 @@ static void track_gtype_for_leak(GType root, bool *first)
{
GType *children; /* Liste de tous les sous-types*/
guint count; /* Taille de cette liste */
- GType *iter; /* Boucle de parcours */
int remaining; /* Nombre d'instances restantes*/
+ const tracked_gtype_t *tracked; /* Infos de type mémorisées */
+ GType *iter; /* Boucle de parcours */
children = g_type_children(root, &count);
@@ -79,7 +192,12 @@ static void track_gtype_for_leak(GType root, bool *first)
*first = false;
}
- fprintf(stderr, "%s: %d\n", g_type_name(root), remaining);
+ tracked = bsearch((tracked_gtype_t []) { { .type = root } }, __tracking,
+ __count, sizeof(tracked_gtype_t), (__compar_fn_t)compare_gtypes_for_leaks);
+
+ assert(tracked != NULL);
+
+ fprintf(stderr, "%s: %d\n", tracked->name, remaining);
}
@@ -110,6 +228,7 @@ void dump_remaining_gtypes(void)
{
char *debug; /* Conditions d'environnement */
bool first; /* Première fois ? */
+ size_t i; /* Boucle de parcours */
debug = get_env_var("GOBJECT_DEBUG");
@@ -125,6 +244,8 @@ void dump_remaining_gtypes(void)
{
first = true;
+ qsort(__tracking, __count, sizeof(tracked_gtype_t), (__compar_fn_t)compare_gtypes_for_leaks);
+
track_gtype_for_leak(G_TYPE_OBJECT, &first);
if (!first)
@@ -134,4 +255,16 @@ void dump_remaining_gtypes(void)
free(debug);
+ for (i = 0; i < __count; i++)
+ free(__tracking[i].name);
+
+ if (__tracking != NULL)
+ {
+ free(__tracking);
+
+ __tracking = NULL;
+ __count = 0;
+
+ }
+
}
diff --git a/src/gleak.h b/src/gleak.h
index 233fabb..f80e167 100644
--- a/src/gleak.h
+++ b/src/gleak.h
@@ -25,6 +25,8 @@
#define _GLEAK_H
+/* Constitue une base de données de nom de tous les GTypes. */
+void remember_gtypes_for_leaks(void);
/* Affiche la liste des instances courantes restantes par type. */
void dump_remaining_gtypes(void);
diff --git a/src/main.c b/src/main.c
index ef0335a..e5a964e 100644
--- a/src/main.c
+++ b/src/main.c
@@ -404,6 +404,10 @@ int main(int argc, char **argv)
exit_complete_gui:
+#ifdef TRACK_GOBJECT_LEAKS
+ remember_gtypes_for_leaks();
+#endif
+
exit_all_plugins();
if (!batch_mode)
diff --git a/src/plugins/plugin-def.h b/src/plugins/plugin-def.h
index 6d4253e..3717035 100644
--- a/src/plugins/plugin-def.h
+++ b/src/plugins/plugin-def.h
@@ -223,14 +223,22 @@ typedef struct _plugin_interface
uint64_t magic; /* Vérification a minima */
plugin_abi_version_t abi_version; /* Version du protocole utilisé*/
- const char *gtp_name; /* Désignation du GType associé*/
- const char *name; /* Désignation humaine courte */
- const char *desc; /* Description plus loquace */
- const char *version; /* Version du greffon */
+ /**
+ * Les champs suivants ne sont généralement pas alloués dynamiquement,
+ * car issus des données des greffons natifs.
+ *
+ * Dans le cas des autres types d'extensions (par exemple ceux en Python),
+ * les éléments sont construits à la volée, donc à libérer après usage.
+ */
+
+ char *gtp_name; /* Désignation du GType associé*/
+ char *name; /* Désignation humaine courte */
+ char *desc; /* Description plus loquace */
+ char *version; /* Version du greffon */
bool container; /* Mise en place de greffons ? */
- const char **required; /* Pré-chargements requis */
+ char **required; /* Pré-chargements requis */
size_t required_count; /* Quantité de ces dépendances */
plugin_action_t *actions; /* Liste des actions gérées */
@@ -251,7 +259,7 @@ typedef struct _plugin_interface
#define AL(...) BUILD_PG_LIST(.actions, ((plugin_action_t []){ __VA_ARGS__ }))
-#define RL(...) BUILD_PG_LIST(.required, ((const char *[]){ __VA_ARGS__ }))
+#define RL(...) BUILD_PG_LIST(.required, ((char *[]){ __VA_ARGS__ }))
#define NO_REQ EMPTY_PG_LIST(.required)