common: Factor out gdm_load_env_d()

We need to use this machinery from a second location; as a first step
factor it out to gdm-common.

2 files changed, 123 insertions, 0 deletions

diff --git a/common/gdm-common.c b/common/gdm-common.c
index bf8364a8..6ba3c595 100644
--- a/common/gdm-common.c
+++ b/common/gdm-common.c
@@ -956,3 +956,119 @@ gdm_find_display_session (GPid        pid,
 
         return TRUE;
 }
+
+static void
+load_env_file (GFile *file,
+               GdmLoadEnvVarFunc load_env_func,
+               gpointer user_data)
+{
+        gchar *contents;
+        gchar **lines;
+        gchar *line, *p;
+        gchar *var, *var_end;
+        char *filename;
+        int i;
+
+        filename = g_file_get_path (file);
+        g_debug ("Loading env vars from %s\n", filename);
+        g_free (filename);
+
+        if (g_file_load_contents (file, NULL, &contents, NULL, NULL, NULL)) {
+                lines = g_strsplit (contents, "\n", -1);
+                g_free (contents);
+                for (i = 0; lines[i] != NULL; i++) {
+                        line = lines[i];
+                        p = line;
+                        while (g_ascii_isspace (*p))
+                                p++;
+                        if (*p == '#' || *p == '\0')
+                                continue;
+                        var = p;
+                        while (gdm_shell_var_is_valid_char (*p, p == var))
+                                p++;
+                        var_end = p;
+                        while (g_ascii_isspace (*p))
+                                p++;
+                        if (var == var_end || *p != '=') {
+                                g_warning ("Invalid env.d line '%s'\n", line);
+                                continue;
+                        }
+                        *var_end = 0;
+                        p++; /* Skip = */
+                        while (g_ascii_isspace (*p))
+                                p++;
+
+                        load_env_func (var, p, user_data);
+                }
+                g_strfreev (lines);
+        }
+}
+
+static gint
+compare_str (gconstpointer  a,
+             gconstpointer  b)
+{
+  return strcmp (*(const char **)a, *(const char **)b);
+}
+
+static void
+gdm_load_env_dir (GFile *dir,
+                  GdmLoadEnvVarFunc load_env_func,
+                  gpointer user_data)
+{
+        GFileInfo *info = NULL;
+        GFileEnumerator *enumerator = NULL;
+        GPtrArray *names = NULL;
+        GFile *file;
+        const gchar *name;
+        int i;
+
+        enumerator = g_file_enumerate_children (dir,
+                                                G_FILE_ATTRIBUTE_STANDARD_TYPE","
+                                                G_FILE_ATTRIBUTE_STANDARD_NAME","
+                                                G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN","
+                                                G_FILE_ATTRIBUTE_STANDARD_IS_BACKUP,
+                                                G_FILE_QUERY_INFO_NONE,
+                                                NULL, NULL);
+        if (!enumerator) {
+                goto out;
+        }
+
+        names = g_ptr_array_new_with_free_func (g_free);
+        while ((info = g_file_enumerator_next_file (enumerator, NULL, NULL)) != NULL) {
+                if (g_file_info_get_file_type (info) == G_FILE_TYPE_REGULAR &&
+                    !g_file_info_get_is_hidden (info) &&
+                    g_str_has_suffix (g_file_info_get_name (info), ".env"))
+                  g_ptr_array_add (names, g_strdup (g_file_info_get_name (info)));
+
+                g_clear_object (&info);
+        }
+
+        g_ptr_array_sort (names, compare_str);
+
+        for (i = 0; i < names->len; i++) {
+                name = g_ptr_array_index (names, i);
+                file = g_file_get_child (dir, name);
+                load_env_file (file, load_env_func, user_data);
+                g_object_unref (file);
+        }
+
+ out:
+        g_clear_pointer (&names, g_ptr_array_unref);
+        g_clear_object (&enumerator);
+}
+
+void
+gdm_load_env_d (GdmLoadEnvVarFunc load_env_func,
+                gpointer user_data)
+{
+        GFile *dir;
+
+        dir = g_file_new_for_path (DATADIR "/gdm/env.d");
+        gdm_load_env_dir (dir, load_env_func, user_data);
+        g_object_unref (dir);
+
+        dir = g_file_new_for_path (GDMCONFDIR "/env.d");
+        gdm_load_env_dir (dir, load_env_func, user_data);
+        g_object_unref (dir);
+}
diff --git a/common/gdm-common.h b/common/gdm-common.h
index 001b70c1..6f047603 100644
--- a/common/gdm-common.h
+++ b/common/gdm-common.h
@@ -43,6 +43,10 @@ GQuark gdm_common_error_quark (void);
 typedef char * (*GdmExpandVarFunc) (const char *var,
                                     gpointer user_data);
 
+typedef void   (*GdmLoadEnvVarFunc) (const char *var,
+                                     const char *value,
+                                     gpointer user_data);
+
 G_BEGIN_DECLS
 
 int            gdm_wait_on_pid           (int pid);
@@ -87,6 +91,9 @@ gboolean      gdm_activate_session_by_id (GDBusConnection *connection,
                                           const char      *seat_id,
                                           const char      *session_id);
 
+void          gdm_load_env_d              (GdmLoadEnvVarFunc load_env_func,
+                                           gpointer          user_data);
+
 G_END_DECLS
 
 #endif /* _GDM_COMMON_H */