user: Add helper to allow overriding the root directory

This makes it possible to override the hardcoded USERDIR, ICONDIR,
and /etc by setting the ROOTDIR environment variable, if the daemon
is running as a normal user.

3 files changed, 54 insertions, 0 deletions

diff --git a/src/util.c b/src/util.c
index 54cdd6d..0994401 100644
--- a/src/util.c
+++ b/src/util.c
@@ -397,3 +397,50 @@ verify_locale (const char *locale)
                 return TRUE;
         return verify_xpg_locale (locale);
 }
+
+static char *userdir = NULL;
+static char *sysconfdir = NULL;
+static char *icondir = NULL;
+
+void
+init_dirs (void)
+{
+        if (getuid() != 0 &&
+            geteuid() != 0 &&
+            g_getenv ("ROOTDIR") != NULL) {
+                userdir = g_build_filename (g_getenv ("ROOTDIR"), USERDIR, NULL);
+                icondir = g_build_filename (g_getenv ("ROOTDIR"), ICONDIR, NULL);
+                sysconfdir = g_build_filename (g_getenv ("ROOTDIR"), "etc", NULL);
+                return;
+        }
+
+        userdir = g_strdup (USERDIR);
+        icondir = g_strdup (ICONDIR);
+        sysconfdir = g_strdup ("/etc/");
+}
+
+void
+free_dirs (void)
+{
+        g_free (userdir);
+        g_free (icondir);
+        g_free (sysconfdir);
+}
+
+const char *
+get_userdir (void)
+{
+        return userdir;
+}
+
+const char *
+get_sysconfdir (void)
+{
+        return sysconfdir;
+}
+
+const char *
+get_icondir (void)
+{
+	return icondir;
+}
diff --git a/src/util.h b/src/util.h
index 6bb9110..cc46f3e 100644
--- a/src/util.h
+++ b/src/util.h
@@ -42,3 +42,9 @@ gint get_user_groups (const gchar  *username,
 
 gboolean verify_xpg_locale (const char *locale);
 gboolean verify_locale     (const char *locale);
+
+void init_dirs (void);
+void free_dirs (void);
+const char *get_userdir (void);
+const char *get_sysconfdir (void);
+const char *get_icondir (void);
diff --git a/tests/meson.build b/tests/meson.build
index b730270..0a72697 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -85,6 +85,7 @@ deps = [
 foreach test_name : tests
   exe = executable(test_name, '@0@.c'.format(test_name),
                    include_directories: top_inc,
+                   c_args: cflags,
                    dependencies: deps)
   test(test_name, exe)
 endforeach