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92fae633a0
Support testing flatpak infos, we do it by faking /.flatpak-info file in case we're building in test mode.
142 lines
3.5 KiB
C
142 lines
3.5 KiB
C
/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright 2022 Canonical Ltd
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "config.h"
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#include "gsandbox.h"
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#include <string.h>
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#define SNAP_CONFINEMENT_PREFIX "confinement:"
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static gboolean
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is_flatpak (void)
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{
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const char *flatpak_info = "/.flatpak-info";
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gboolean found;
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#ifdef G_PORTAL_SUPPORT_TEST
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char *test_key_file =
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g_build_filename (g_get_user_runtime_dir (), flatpak_info, NULL);
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flatpak_info = test_key_file;
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#endif
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found = g_file_test (flatpak_info, G_FILE_TEST_EXISTS);
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#ifdef G_PORTAL_SUPPORT_TEST
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g_clear_pointer (&test_key_file, g_free);
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#endif
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return found;
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}
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static gchar *
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get_snap_confinement (const char *snap_yaml,
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GError **error)
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{
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char *confinement = NULL;
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char *yaml_contents;
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if (g_file_get_contents (snap_yaml, &yaml_contents, NULL, error))
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{
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const char *line = yaml_contents;
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do
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{
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if (g_str_has_prefix (line, SNAP_CONFINEMENT_PREFIX))
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break;
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line = strchr (line, '\n');
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if (line)
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line += 1;
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}
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while (line != NULL);
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if (line)
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{
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const char *start = line + strlen (SNAP_CONFINEMENT_PREFIX);
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const char *end = strchr (start, '\n');
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confinement =
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g_strstrip (end ? g_strndup (start, end-start) : g_strdup (start));
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}
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g_free (yaml_contents);
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}
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return g_steal_pointer (&confinement);
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}
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static gboolean
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is_snap (void)
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{
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GError *error = NULL;
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const gchar *snap_path;
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gchar *yaml_path;
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char *confinement;
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gboolean result;
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snap_path = g_getenv ("SNAP");
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if (snap_path == NULL)
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return FALSE;
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result = FALSE;
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yaml_path = g_build_filename (snap_path, "meta", "snap.yaml", NULL);
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confinement = get_snap_confinement (yaml_path, &error);
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g_free (yaml_path);
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/* Classic snaps are de-facto no sandboxed apps, so we can ignore them */
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if (!error && g_strcmp0 (confinement, "classic") != 0)
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result = TRUE;
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g_clear_error (&error);
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g_free (confinement);
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return result;
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}
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/*
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* glib_get_sandbox_type:
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*
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* Gets the type of sandbox this process is running inside.
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*
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* Checking for sandboxes may involve doing blocking I/O calls, but should not take
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* any significant time.
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*
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* The sandbox will not change over the lifetime of the process, so calling this
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* function once and reusing the result is valid.
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*
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* If this process is not sandboxed then @G_SANDBOX_TYPE_UNKNOWN will be returned.
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* This is because this function only detects known sandbox types in #GSandboxType.
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* It may be updated in the future if new sandboxes come into use.
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*
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* Returns: a #GSandboxType.
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*/
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GSandboxType
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glib_get_sandbox_type (void)
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{
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if (is_flatpak ())
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return G_SANDBOX_TYPE_FLATPAK;
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else if (is_snap ())
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return G_SANDBOX_TYPE_SNAP;
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else
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return G_SANDBOX_TYPE_UNKNOWN;
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}
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