Handle the XDG directories.

8 files changed, 822 insertions, 37 deletions

diff --git a/plugins/pychrysalide/common/Makefile.am b/plugins/pychrysalide/common/Makefile.am
index 199ef43..cc87a82 100644
--- a/plugins/pychrysalide/common/Makefile.am
+++ b/plugins/pychrysalide/common/Makefile.am
@@ -14,7 +14,8 @@ noinst_LTLIBRARIES = libpychrysacommon.la
 
 libpychrysacommon_la_SOURCES =				\
 	bits.h bits.c							\
-	module.h module.c
+	module.h module.c						\
+	xdg.h xdg.c
 
 libpychrysacommon_la_CFLAGS = $(TOOLKIT_CFLAGS) $(LIBXML_CFLAGS) $(LIBPYTHON_INTERPRETER_CFLAGS) $(LIBPYGOBJECT_CFLAGS) \
 	-I$(top_srcdir)/src -DNO_IMPORT_PYGOBJECT
diff --git a/plugins/pychrysalide/common/module.c b/plugins/pychrysalide/common/module.c
index 5fc1135..7af12ba 100644
--- a/plugins/pychrysalide/common/module.c
+++ b/plugins/pychrysalide/common/module.c
@@ -33,6 +33,7 @@
 //#include "packed.h"
 //#include "pathname.h"
 //#include "pearson.h"
+#include "xdg.h"
 #include "../helpers.h"
 
 
@@ -106,6 +107,7 @@ bool populate_common_module(void)
     if (result) result = populate_common_module_with_pathname();
     if (result) result = populate_common_module_with_pearson();
     */
+    if (result) result = populate_common_module_with_xdg();
 
     if (result) result = ensure_python_bitfield_is_registered();
     //if (result) result = ensure_python_packed_buffer_is_registered();
diff --git a/plugins/pychrysalide/common/xdg.c b/plugins/pychrysalide/common/xdg.c
new file mode 100644
index 0000000..789a0a6
--- /dev/null
+++ b/plugins/pychrysalide/common/xdg.c
@@ -0,0 +1,385 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * xdg.c - équivalent Python du fichier "common/xdg.c"
+ *
+ * Copyright (C) 2024 Cyrille Bagard
+ *
+ *  This file is part of Chrysalide.
+ *
+ *  Chrysalide is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Chrysalide is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#include "xdg.h"
+
+
+#include <malloc.h>
+#include <pygobject.h>
+
+
+#include <common/xdg.h>
+
+
+#include "../access.h"
+#include "../helpers.h"
+
+
+
+/* Détermine le chemin d'un répertoire de données XDG. */
+static PyObject *py_xdg_get_xdg_cache_dir(PyObject *, PyObject *);
+
+/* Détermine le chemin d'un répertoire de données XDG. */
+static PyObject *py_xdg_get_xdg_config_dir(PyObject *, PyObject *);
+
+/* Détermine le chemin d'un répertoire de données XDG. */
+static PyObject *py_xdg_get_xdg_data_dir(PyObject *, PyObject *);
+
+/* Détermine le chemin d'un répertoire de données XDG. */
+static PyObject *py_xdg_get_xdg_state_dir(PyObject *, PyObject *);
+
+/* Détermine le chemin d'un répertoire éphémère XDG. */
+static PyObject *py_xdg_get_xdg_runtime_dir(PyObject *, PyObject *);
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : self = NULL car méthode statique.                            *
+*                args = arguments fournis lors de l'appel à la fonction.      *
+*                                                                             *
+*  Description : Détermine le chemin d'un répertoire de données XDG.          *
+*                                                                             *
+*  Retour      : Chemin d'accès aux configurations personnelles ou None.      *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static PyObject *py_xdg_get_xdg_cache_dir(PyObject *self, PyObject *args)
+{
+    PyObject *result;                       /* Instance à retourner        */
+    int create;                             /* Besoin en création          */
+    const char *suffix;                     /* Fin de la localisation      */
+    int ret;                                /* Bilan de lecture des args.  */
+    char *filename;                         /* Chemin d'accès construit    */
+
+#define GET_XDG_CACHE_DIR_METHOD PYTHON_METHOD_DEF                  \
+(                                                                   \
+    get_xdg_cache_dir, "suffix, create=True",                       \
+    METH_VARARGS, py_xdg,                                           \
+    "Get the location of a file belonging to the base directory"    \
+    " pointed by the *XDG_CACHE_HOME* environment variable.\n"      \
+    "\n"                                                            \
+    "The *suffix* argument is a string appended to the XDG base"    \
+    " directory. The *create* option ensures all the directories"   \
+    " involved in the returned path exist.\n"                       \
+    "\n"                                                            \
+    "The function returns the full filename to use for a content"   \
+    " related to cache according to the XDG specifications, or"     \
+    " *None* in case of failure."                                   \
+)
+
+    create = 1;
+
+    ret = PyArg_ParseTuple(args, "s|p", &suffix, &create);
+    if (!ret) return NULL;
+
+    filename = get_xdg_cache_dir(suffix, create);
+
+    if (filename == NULL)
+    {
+        result = Py_None;
+        Py_INCREF(result);
+    }
+    else
+    {
+        result = PyUnicode_FromString(filename);
+        free(filename);
+    }
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : self = NULL car méthode statique.                            *
+*                args = arguments fournis lors de l'appel à la fonction.      *
+*                                                                             *
+*  Description : Détermine le chemin d'un répertoire de données XDG.          *
+*                                                                             *
+*  Retour      : Chemin d'accès aux configurations personnelles ou None.      *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static PyObject *py_xdg_get_xdg_config_dir(PyObject *self, PyObject *args)
+{
+    PyObject *result;                       /* Instance à retourner        */
+    int create;                             /* Besoin en création          */
+    const char *suffix;                     /* Fin de la localisation      */
+    int ret;                                /* Bilan de lecture des args.  */
+    char *filename;                         /* Chemin d'accès construit    */
+
+#define GET_XDG_CONFIG_DIR_METHOD PYTHON_METHOD_DEF                 \
+(                                                                   \
+    get_xdg_config_dir, "suffix, create=True",                      \
+    METH_VARARGS, py_xdg,                                           \
+    "Get the location of a file belonging to the base directory"    \
+    " pointed by the *XDG_CONFIG_HOME* environment variable.\n"     \
+    "\n"                                                            \
+    "The *suffix* argument is a string appended to the XDG base"    \
+    " directory. The *create* option ensures all the directories"   \
+    " involved in the returned path exist.\n"                       \
+    "\n"                                                            \
+    "The function returns the full filename to use for a content"   \
+    " related to configuration according to the XDG specifications,"\
+    " or *None* in case of failure."                                \
+)
+
+    create = 1;
+
+    ret = PyArg_ParseTuple(args, "s|p", &suffix, &create);
+    if (!ret) return NULL;
+
+    filename = get_xdg_config_dir(suffix, create);
+
+    if (filename == NULL)
+    {
+        result = Py_None;
+        Py_INCREF(result);
+    }
+    else
+    {
+        result = PyUnicode_FromString(filename);
+        free(filename);
+    }
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : self = NULL car méthode statique.                            *
+*                args = arguments fournis lors de l'appel à la fonction.      *
+*                                                                             *
+*  Description : Détermine le chemin d'un répertoire de données XDG.          *
+*                                                                             *
+*  Retour      : Chemin d'accès aux configurations personnelles ou None.      *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static PyObject *py_xdg_get_xdg_data_dir(PyObject *self, PyObject *args)
+{
+    PyObject *result;                       /* Instance à retourner        */
+    int create;                             /* Besoin en création          */
+    const char *suffix;                     /* Fin de la localisation      */
+    int ret;                                /* Bilan de lecture des args.  */
+    char *filename;                         /* Chemin d'accès construit    */
+
+#define GET_XDG_DATA_DIR_METHOD PYTHON_METHOD_DEF                   \
+(                                                                   \
+    get_xdg_data_dir, "suffix, create=True",                        \
+    METH_VARARGS, py_xdg,                                           \
+    "Get the location of a file belonging to the base directory"    \
+    " pointed by the *XDG_DATA_HOME* environment variable.\n"       \
+    "\n"                                                            \
+    "The *suffix* argument is a string appended to the XDG base"    \
+    " directory. The *create* option ensures all the directories"   \
+    " involved in the returned path exist.\n"                       \
+    "\n"                                                            \
+    "The function returns the full filename to use for a content"   \
+    " related to data according to the XDG specifications, or"      \
+    " *None* in case of failure."                                   \
+)
+
+    create = 1;
+
+    ret = PyArg_ParseTuple(args, "s|p", &suffix, &create);
+    if (!ret) return NULL;
+
+    filename = get_xdg_data_dir(suffix, create);
+
+    if (filename == NULL)
+    {
+        result = Py_None;
+        Py_INCREF(result);
+    }
+    else
+    {
+        result = PyUnicode_FromString(filename);
+        free(filename);
+    }
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : self = NULL car méthode statique.                            *
+*                args = arguments fournis lors de l'appel à la fonction.      *
+*                                                                             *
+*  Description : Détermine le chemin d'un répertoire de données XDG.          *
+*                                                                             *
+*  Retour      : Chemin d'accès aux configurations personnelles ou None.      *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static PyObject *py_xdg_get_xdg_state_dir(PyObject *self, PyObject *args)
+{
+    PyObject *result;                       /* Instance à retourner        */
+    int create;                             /* Besoin en création          */
+    const char *suffix;                     /* Fin de la localisation      */
+    int ret;                                /* Bilan de lecture des args.  */
+    char *filename;                         /* Chemin d'accès construit    */
+
+#define GET_XDG_STATE_DIR_METHOD PYTHON_METHOD_DEF                  \
+(                                                                   \
+    get_xdg_state_dir, "suffix, create=True",                       \
+    METH_VARARGS, py_xdg,                                           \
+    "Get the location of a file belonging to the base directory"    \
+    " pointed by the *XDG_STATE_HOME* environment variable.\n"      \
+    "\n"                                                            \
+    "The *suffix* argument is a string appended to the XDG base"    \
+    " directory. The *create* option ensures all the directories"   \
+    " involved in the returned path exist.\n"                       \
+    "\n"                                                            \
+    "The function returns the full filename to use for a content"   \
+    " related to states according to the XDG specifications, or"    \
+    " *None* in case of failure."                                   \
+)
+
+    create = 1;
+
+    ret = PyArg_ParseTuple(args, "s|p", &suffix, &create);
+    if (!ret) return NULL;
+
+    filename = get_xdg_state_dir(suffix, create);
+
+    if (filename == NULL)
+    {
+        result = Py_None;
+        Py_INCREF(result);
+    }
+    else
+    {
+        result = PyUnicode_FromString(filename);
+        free(filename);
+    }
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : self = NULL car méthode statique.                            *
+*                args = arguments fournis lors de l'appel à la fonction.      *
+*                                                                             *
+*  Description : Détermine le chemin d'un répertoire éphémère XDG.            *
+*                                                                             *
+*  Retour      : Chemin d'accès aux configurations personnelles ou None.      *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+static PyObject *py_xdg_get_xdg_runtime_dir(PyObject *self, PyObject *args)
+{
+    PyObject *result;                       /* Instance à retourner        */
+    const char *suffix;                     /* Fin de la localisation      */
+    int ret;                                /* Bilan de lecture des args.  */
+    char *filename;                         /* Chemin d'accès construit    */
+
+#define GET_XDG_RUNTIME_DIR_METHOD PYTHON_METHOD_DEF                \
+(                                                                   \
+    get_xdg_runtime_dir, "suffix",                                  \
+    METH_VARARGS, py_xdg,                                           \
+    "Get the location of a file belonging to the base directory"    \
+    " pointed by the *XDG_RUNTIME_DIR* environment variable.\n"     \
+    "\n"                                                            \
+    "The *suffix* argument is a string appended to the XDG base"    \
+    " directory.\n"                                                 \
+    "\n"                                                            \
+    "The function returns the full filename to use for a content"   \
+    " related to runtime data according to the XDG specifications," \
+    " or *None* in case of failure."                                \
+)
+
+    ret = PyArg_ParseTuple(args, "s", &suffix);
+    if (!ret) return NULL;
+
+    filename = get_xdg_runtime_dir(suffix);
+
+    if (filename == NULL)
+    {
+        result = Py_None;
+        Py_INCREF(result);
+    }
+    else
+    {
+        result = PyUnicode_FromString(filename);
+        free(filename);
+    }
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : -                                                            *
+*                                                                             *
+*  Description : Définit une extension du module 'common' à compléter.        *
+*                                                                             *
+*  Retour      : Bilan de l'opération.                                        *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+bool populate_common_module_with_xdg(void)
+{
+    bool result;                            /* Bilan à retourner           */
+    PyObject *module;                       /* Module à recompléter        */
+
+    static PyMethodDef py_xdg_methods[] = {
+        GET_XDG_CACHE_DIR_METHOD,
+        GET_XDG_CONFIG_DIR_METHOD,
+        GET_XDG_DATA_DIR_METHOD,
+        GET_XDG_STATE_DIR_METHOD,
+        GET_XDG_RUNTIME_DIR_METHOD,
+        { NULL }
+    };
+
+    module = get_access_to_python_module("pychrysalide.common");
+
+    result = register_python_module_methods(module, py_xdg_methods);
+
+    return result;
+
+}
diff --git a/plugins/pychrysalide/common/xdg.h b/plugins/pychrysalide/common/xdg.h
new file mode 100644
index 0000000..f1aa16a
--- /dev/null
+++ b/plugins/pychrysalide/common/xdg.h
@@ -0,0 +1,39 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * xdg.h - prototypes pour l'équivalent Python du fichier "common/xdg.c"
+ *
+ * Copyright (C) 2024 Cyrille Bagard
+ *
+ *  This file is part of Chrysalide.
+ *
+ *  Chrysalide is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  Chrysalide is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+#ifndef _PLUGINS_PYCHRYSALIDE_COMMON_XDG_H
+#define _PLUGINS_PYCHRYSALIDE_COMMON_XDG_H
+
+
+#include <Python.h>
+#include <stdbool.h>
+
+
+
+/*  Définit une extension du module 'common' à compléter. */
+bool populate_common_module_with_xdg(void);
+
+
+
+#endif  /* _PLUGINS_PYCHRYSALIDE_COMMON_XDG_H */
diff --git a/src/common/xdg.c b/src/common/xdg.c
index cabff75..891b6ae 100644
--- a/src/common/xdg.c
+++ b/src/common/xdg.c
@@ -24,20 +24,41 @@
 #include "xdg.h"
 
 
-#include <dirent.h>
-#include <errno.h>
+#include <assert.h>
 #include <glib.h>
 #include <malloc.h>
-#include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
+
+
+#include "pathname.h"
+
+
+
+/**
+ * Cf. https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html
+ */
+
+/* $HOME/.cache */
+#define CACHE_HOME_SUFFIX ".cache" G_DIR_SEPARATOR_S
+
+/* $HOME/.config */
+#define CONFIG_HOME_SUFFIX ".config" G_DIR_SEPARATOR_S
+
+/* $HOME/.local/share */
+#define DATA_HOME_SUFFIX ".local" G_DIR_SEPARATOR_S "share" G_DIR_SEPARATOR_S
+
+/* $HOME/.local/state */
+#define STATE_HOME_SUFFIX ".local" G_DIR_SEPARATOR_S "state" G_DIR_SEPARATOR_S
 
 
 
 /******************************************************************************
 *                                                                             *
 *  Paramètres  : suffix = élément visé dans le répertoire de configuration.   *
+*                create = assure la mise en place du répertoire final.        *
 *                                                                             *
-*  Description : Détermine le chemin d'un répertoire selon les specs. XDG.    *
+*  Description : Détermine le chemin d'un répertoire de données XDG.          *
 *                                                                             *
 *  Retour      : Chemin d'accès aux configurations personnelles ou NULL.      *
 *                                                                             *
@@ -45,70 +66,321 @@
 *                                                                             *
 ******************************************************************************/
 
-char *get_xdg_config_dir(const char *suffix)
+char *get_xdg_cache_dir(const char *suffix, bool create)
 {
     char *result;                           /* Chemin d'accès à renvoyer   */
     const char *env;                        /* Valeur de l'environnement   */
-    DIR *directory;                         /* Répertoire avec contenu ?   */
-    struct dirent *entry;                   /* Elément de répertoire       */
+    int ret;                                /* Bilan d'une assurance       */
+    
+    assert(suffix[0] != G_DIR_SEPARATOR);
 
     result = NULL;
 
-    env = getenv("XDG_CONFIG_HOME");
+    env = getenv("XDG_CACHE_HOME");
 
     if (env != NULL && env[0] != '\0')
     {
-        directory = opendir(env);
-        if (directory == NULL) goto default_cfg_dir;
+        result = calloc(strlen(env) + 1 + strlen(suffix) + 1, sizeof(char));
+
+        strcpy(result, env);
+
+        if (env[strlen(env) - 1] != G_DIR_SEPARATOR)
+            strcat(result, G_DIR_SEPARATOR_S);
+
+        strcat(result, suffix);
+
+    }
+
+    else
+    {
+        env = getenv("HOME");
+        if (env == NULL || env[0] == '\0') goto no_env;
+
+        result = calloc(strlen(env) + 1 + strlen(CACHE_HOME_SUFFIX) + strlen(suffix) + 1, sizeof(char));
+
+        strcpy(result, env);
+
+        if (env[strlen(env) - 1] != G_DIR_SEPARATOR)
+            strcat(result, G_DIR_SEPARATOR_S);
+
+        strcat(result, CACHE_HOME_SUFFIX);
+        strcat(result, suffix);
+
+    }
+
+    if (create)
+    {
+        ret = ensure_path_exists(result);
 
-        while (1)
+        if (ret != 0)
         {
-            errno = 0;
+            free(result);
+            result = NULL;
+        }
+
+    }
+
+ no_env:
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : suffix = élément visé dans le répertoire de configuration.   *
+*                create = assure la mise en place du répertoire final.        *
+*                                                                             *
+*  Description : Détermine le chemin d'un répertoire de données XDG.          *
+*                                                                             *
+*  Retour      : Chemin d'accès aux configurations personnelles ou NULL.      *
+*                                                                             *
+*  Remarques   : cf. http://standards.freedesktop.org/basedir-spec/.          *
+*                                                                             *
+******************************************************************************/
 
-            entry = readdir(directory);
+char *get_xdg_config_dir(const char *suffix, bool create)
+{
+    char *result;                           /* Chemin d'accès à renvoyer   */
+    const char *env;                        /* Valeur de l'environnement   */
+    int ret;                                /* Bilan d'une assurance       */
+    
+    assert(suffix[0] != G_DIR_SEPARATOR);
 
-            if (entry == NULL)
-            {
-                if (errno != 0)
-                    perror("readdir");
+    result = NULL;
+
+    env = getenv("XDG_CONFIG_HOME");
 
-                break;
+    if (env != NULL && env[0] != '\0')
+    {
+        result = calloc(strlen(env) + 1 + strlen(suffix) + 1, sizeof(char));
 
-            }
+        strcpy(result, env);
 
-            if (strcmp(entry->d_name, ".") == 0) continue;
-            if (strcmp(entry->d_name, "..") == 0) continue;
+        if (env[strlen(env) - 1] != G_DIR_SEPARATOR)
+            strcat(result, G_DIR_SEPARATOR_S);
 
-            result = calloc(strlen(env) + 2 + strlen(suffix) + 1, sizeof(char));
-            strcpy(result, env);
+        strcat(result, suffix);
 
-            if (env[strlen(env) - 1] != G_DIR_SEPARATOR)
-                strcat(result, G_DIR_SEPARATOR_S);
+    }
+
+    else
+    {
+        env = getenv("HOME");
+        if (env == NULL || env[0] == '\0') goto no_env;
+
+        result = calloc(strlen(env) + 1 + strlen(CONFIG_HOME_SUFFIX) + strlen(suffix) + 1, sizeof(char));
+
+        strcpy(result, env);
+
+        if (env[strlen(env) - 1] != G_DIR_SEPARATOR)
+            strcat(result, G_DIR_SEPARATOR_S);
+
+        strcat(result, CONFIG_HOME_SUFFIX);
+        strcat(result, suffix);
+
+    }
 
-            strcat(result, ".");
-            strcat(result, suffix);
+    if (create)
+    {
+        ret = ensure_path_exists(result);
 
+        if (ret != 0)
+        {
+            free(result);
+            result = NULL;
         }
 
-        closedir(directory);
+    }
+
+ no_env:
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : suffix = élément visé dans le répertoire de configuration.   *
+*                create = assure la mise en place du répertoire final.        *
+*                                                                             *
+*  Description : Détermine le chemin d'un répertoire de données XDG.          *
+*                                                                             *
+*  Retour      : Chemin d'accès aux configurations personnelles ou NULL.      *
+*                                                                             *
+*  Remarques   : cf. http://standards.freedesktop.org/basedir-spec/.          *
+*                                                                             *
+******************************************************************************/
+
+char *get_xdg_data_dir(const char *suffix, bool create)
+{
+    char *result;                           /* Chemin d'accès à renvoyer   */
+    const char *env;                        /* Valeur de l'environnement   */
+    int ret;                                /* Bilan d'une assurance       */
+    
+    assert(suffix[0] != G_DIR_SEPARATOR);
+
+    result = NULL;
+
+    env = getenv("XDG_DATA_HOME");
+
+    if (env != NULL && env[0] != '\0')
+    {
+        result = calloc(strlen(env) + 1 + strlen(suffix) + 1, sizeof(char));
+
+        strcpy(result, env);
+
+        if (env[strlen(env) - 1] != G_DIR_SEPARATOR)
+            strcat(result, G_DIR_SEPARATOR_S);
+
+        strcat(result, suffix);
+
+    }
+
+    else
+    {
+        env = getenv("HOME");
+        if (env == NULL || env[0] == '\0') goto no_env;
+
+        result = calloc(strlen(env) + 1 + strlen(DATA_HOME_SUFFIX) + strlen(suffix) + 1, sizeof(char));
+
+        strcpy(result, env);
+
+        if (env[strlen(env) - 1] != G_DIR_SEPARATOR)
+            strcat(result, G_DIR_SEPARATOR_S);
+
+        strcat(result, DATA_HOME_SUFFIX);
+        strcat(result, suffix);
+
+    }
+
+    if (create)
+    {
+        ret = ensure_path_exists(result);
+
+        if (ret != 0)
+        {
+            free(result);
+            result = NULL;
+        }
 
     }
 
- default_cfg_dir:
+ no_env:
+
+    return result;
+
+}
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : suffix = élément visé dans le répertoire de configuration.   *
+*                create = assure la mise en place du répertoire final.        *
+*                                                                             *
+*  Description : Détermine le chemin d'un répertoire de données XDG.          *
+*                                                                             *
+*  Retour      : Chemin d'accès aux configurations personnelles ou NULL.      *
+*                                                                             *
+*  Remarques   : cf. http://standards.freedesktop.org/basedir-spec/.          *
+*                                                                             *
+******************************************************************************/
+
+char *get_xdg_state_dir(const char *suffix, bool create)
+{
+    char *result;                           /* Chemin d'accès à renvoyer   */
+    const char *env;                        /* Valeur de l'environnement   */
+    int ret;                                /* Bilan d'une assurance       */
+    
+    assert(suffix[0] != G_DIR_SEPARATOR);
+
+    result = NULL;
+
+    env = getenv("XDG_STATE_HOME");
+
+    if (env != NULL && env[0] != '\0')
+    {
+        result = calloc(strlen(env) + 1 + strlen(suffix) + 1, sizeof(char));
+
+        strcpy(result, env);
+
+        if (env[strlen(env) - 1] != G_DIR_SEPARATOR)
+            strcat(result, G_DIR_SEPARATOR_S);
 
-    if (result == NULL)
+        strcat(result, suffix);
+
+    }
+
+    else
     {
         env = getenv("HOME");
-        if (env == NULL || env[0] == '\0') return NULL;
+        if (env == NULL || env[0] == '\0') goto no_env;
+
+        result = calloc(strlen(env) + 1 + strlen(STATE_HOME_SUFFIX) + strlen(suffix) + 1, sizeof(char));
+
+        strcpy(result, env);
+
+        if (env[strlen(env) - 1] != G_DIR_SEPARATOR)
+            strcat(result, G_DIR_SEPARATOR_S);
+
+        strcat(result, STATE_HOME_SUFFIX);
+        strcat(result, suffix);
+
+    }
+
+    if (create)
+    {
+        ret = ensure_path_exists(result);
+
+        if (ret != 0)
+        {
+            free(result);
+            result = NULL;
+        }
+
+    }
+
+ no_env:
+
+    return result;
+
+}
+
 
-        result = calloc(strlen(env) + 1 + strlen(".config" G_DIR_SEPARATOR_S) + strlen(suffix) + 1, sizeof(char));
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : suffix = élément visé dans le répertoire de configuration.   *
+*                                                                             *
+*  Description : Détermine le chemin d'un répertoire éphémère XDG.            *
+*                                                                             *
+*  Retour      : Chemin d'accès aux configurations personnelles ou NULL.      *
+*                                                                             *
+*  Remarques   : cf. http://standards.freedesktop.org/basedir-spec/.          *
+*                                                                             *
+******************************************************************************/
+
+char *get_xdg_runtime_dir(const char *suffix)
+{
+    char *result;                           /* Chemin d'accès à renvoyer   */
+    const char *env;                        /* Valeur de l'environnement   */
+    
+    assert(suffix[0] != G_DIR_SEPARATOR);
+
+    result = NULL;
+
+    env = getenv("XDG_RUNTIME_DIR");
+
+    if (env != NULL && env[0] != '\0')
+    {
+        result = calloc(strlen(env) + 1 + strlen(suffix) + 1, sizeof(char));
 
         strcpy(result, env);
 
         if (env[strlen(env) - 1] != G_DIR_SEPARATOR)
             strcat(result, G_DIR_SEPARATOR_S);
 
-        strcat(result, ".config" G_DIR_SEPARATOR_S);
         strcat(result, suffix);
 
     }
diff --git a/src/common/xdg.h b/src/common/xdg.h
index c9c2327..a6cd91d 100644
--- a/src/common/xdg.h
+++ b/src/common/xdg.h
@@ -25,9 +25,24 @@
 #define _COMMON_XDG_H
 
 
+#include <stdbool.h>
 
-/* Détermine le chemin d'un répertoire selon les specs. XDG. */
-char *get_xdg_config_dir(const char *);
+
+
+/* Détermine le chemin d'un répertoire de données XDG. */
+char *get_xdg_cache_dir(const char *, bool);
+
+/* Détermine le chemin d'un répertoire de données XDG. */
+char *get_xdg_config_dir(const char *, bool);
+
+/* Détermine le chemin d'un répertoire de données XDG. */
+char *get_xdg_data_dir(const char *, bool);
+
+/* Détermine le chemin d'un répertoire de données XDG. */
+char *get_xdg_state_dir(const char *, bool);
+
+/* Détermine le chemin d'un répertoire éphémère XDG. */
+char *get_xdg_runtime_dir(const char *);
 
 
 
diff --git a/src/plugins/plugin.c b/src/plugins/plugin.c
index 1dc20e8..75cf4e0 100644
--- a/src/plugins/plugin.c
+++ b/src/plugins/plugin.c
@@ -1203,7 +1203,7 @@ char *g_plugin_module_build_config_filename(const GPluginModule *plugin, const c
     suffix = stradd(suffix, G_DIR_SEPARATOR_S);
     suffix = stradd(suffix, final);
 
-    result = get_xdg_config_dir(suffix);
+    result = get_xdg_config_dir(suffix, true);
 
     free(suffix);
     free(modname);
diff --git a/tests/common/xdg.py b/tests/common/xdg.py
new file mode 100644
index 0000000..df03c3c
--- /dev/null
+++ b/tests/common/xdg.py
@@ -0,0 +1,71 @@
+
+import os
+
+from chrysacase import ChrysalideTestCase
+from pychrysalide.common import get_xdg_cache_dir, get_xdg_config_dir, get_xdg_data_dir, \
+    get_xdg_state_dir, get_xdg_runtime_dir
+
+
+class TestXDG(ChrysalideTestCase):
+    """TestCase for XDG directories."""
+
+    def testXDGCachePath(self):
+        """Retrieve the XDG cache directory."""
+
+        filename = get_xdg_cache_dir('test.txt', False)
+
+        self.assertIsNotNone(filename)
+        self.assertTrue(filename.startswith(os.sep))
+        self.assertTrue(filename.endswith('test.txt'))
+
+        # Depends on current configuration
+        self.assertTrue('.cache' in filename)
+
+
+    def testXDGConfigPath(self):
+        """Retrieve the XDG config directory."""
+
+        filename = get_xdg_config_dir('test.txt', False)
+
+        self.assertIsNotNone(filename)
+        self.assertTrue(filename.startswith(os.sep))
+        self.assertTrue(filename.endswith('test.txt'))
+
+        # Depends on current configuration
+        self.assertTrue('.config' in filename)
+
+
+    def testXDGDataPath(self):
+        """Retrieve the XDG data directory."""
+
+        filename = get_xdg_data_dir('test.txt', False)
+
+        self.assertIsNotNone(filename)
+        self.assertTrue(filename.startswith(os.sep))
+        self.assertTrue(filename.endswith('test.txt'))
+
+        # Depends on current configuration
+        self.assertTrue(os.path.join('.local', 'share') in filename)
+
+
+    def testXDGStatePath(self):
+        """Retrieve the XDG state directory."""
+
+        filename = get_xdg_state_dir('test.txt', False)
+
+        self.assertIsNotNone(filename)
+        self.assertTrue(filename.startswith(os.sep))
+        self.assertTrue(filename.endswith('test.txt'))
+
+        # Depends on current configuration
+        self.assertTrue(os.path.join('.local', 'state') in filename)
+
+
+    def testXDGRuntimePath(self):
+        """Retrieve the XDG runtime directory."""
+
+        filename = get_xdg_runtime_dir('test.txt')
+
+        self.assertIsNotNone(filename)
+        self.assertTrue(filename.startswith(os.sep))
+        self.assertTrue(filename.endswith('test.txt'))