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flatpak-builder/xdg-app-dir.c

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/*
* Copyright © 2014 Red Hat, Inc
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* Authors:
* Alexander Larsson <alexl@redhat.com>
*/
#include "config.h"
#include <string.h>
#include <fcntl.h>
#include <stdio.h>
#include <gio/gio.h>
#include "libgsystem.h"
#include "libglnx/libglnx.h"
#include "xdg-app-dir.h"
#include "xdg-app-utils.h"
#include "errno.h"
struct XdgAppDir {
GObject parent;
gboolean user;
GFile *basedir;
OstreeRepo *repo;
};
typedef struct {
GObjectClass parent_class;
} XdgAppDirClass;
G_DEFINE_TYPE (XdgAppDir, xdg_app_dir, G_TYPE_OBJECT)
G_DEFINE_QUARK (xdg-app-dir-error-quark, xdg_app_dir_error)
enum {
PROP_0,
PROP_USER,
PROP_PATH
};
#define OSTREE_GIO_FAST_QUERYINFO ("standard::name,standard::type,standard::size,standard::is-symlink,standard::symlink-target," \
"unix::device,unix::inode,unix::mode,unix::uid,unix::gid,unix::rdev")
GFile *
xdg_app_get_system_base_dir_location (void)
{
return g_file_new_for_path (XDG_APP_SYSTEMDIR);
}
GFile *
xdg_app_get_user_base_dir_location (void)
{
g_autofree char *base = g_build_filename (g_get_user_data_dir (), "xdg-app", NULL);
return g_file_new_for_path (base);
}
static void
xdg_app_dir_finalize (GObject *object)
{
XdgAppDir *self = XDG_APP_DIR (object);
g_clear_object (&self->repo);
g_clear_object (&self->basedir);
G_OBJECT_CLASS (xdg_app_dir_parent_class)->finalize (object);
}
static void
xdg_app_dir_set_property(GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
XdgAppDir *self = XDG_APP_DIR (object);
switch (prop_id)
{
case PROP_PATH:
/* Canonicalize */
self->basedir = g_file_new_for_path (gs_file_get_path_cached (g_value_get_object (value)));
break;
case PROP_USER:
self->user = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
xdg_app_dir_get_property(GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
XdgAppDir *self = XDG_APP_DIR (object);
switch (prop_id)
{
case PROP_PATH:
g_value_set_object (value, self->basedir);
break;
case PROP_USER:
g_value_set_boolean (value, self->user);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
xdg_app_dir_class_init (XdgAppDirClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->get_property = xdg_app_dir_get_property;
object_class->set_property = xdg_app_dir_set_property;
object_class->finalize = xdg_app_dir_finalize;
g_object_class_install_property (object_class,
PROP_USER,
g_param_spec_boolean ("user",
"",
"",
FALSE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_PATH,
g_param_spec_object ("path",
"",
"",
G_TYPE_FILE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
}
static void
xdg_app_dir_init (XdgAppDir *self)
{
}
gboolean
xdg_app_dir_is_user (XdgAppDir *self)
{
return self->user;
}
GFile *
xdg_app_dir_get_path (XdgAppDir *self)
{
return self->basedir;
}
GFile *
xdg_app_dir_get_deploy_dir (XdgAppDir *self,
const char *ref)
{
return g_file_resolve_relative_path (self->basedir, ref);
}
GFile *
xdg_app_dir_get_exports_dir (XdgAppDir *self)
{
return g_file_get_child (self->basedir, "exports");
}
GFile *
xdg_app_dir_get_removed_dir (XdgAppDir *self)
{
return g_file_get_child (self->basedir, ".removed");
}
OstreeRepo *
xdg_app_dir_get_repo (XdgAppDir *self)
{
return self->repo;
}
gboolean
xdg_app_dir_ensure_path (XdgAppDir *self,
GCancellable *cancellable,
GError **error)
{
return gs_file_ensure_directory (self->basedir, TRUE, cancellable, error);
}
gboolean
xdg_app_dir_ensure_repo (XdgAppDir *self,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_autoptr(GFile) repodir = NULL;
g_autoptr(OstreeRepo) repo = NULL;
if (self->repo == NULL)
{
if (!xdg_app_dir_ensure_path (self, cancellable, error))
goto out;
repodir = g_file_get_child (self->basedir, "repo");
repo = ostree_repo_new (repodir);
if (!g_file_query_exists (repodir, cancellable))
{
if (!ostree_repo_create (repo,
self->user ? OSTREE_REPO_MODE_BARE_USER : OSTREE_REPO_MODE_BARE,
cancellable, error))
{
gs_shutil_rm_rf (repodir, cancellable, NULL);
goto out;
}
}
else
{
if (!ostree_repo_open (repo, cancellable, error))
{
g_autofree char *repopath = NULL;
repopath = g_file_get_path (repodir);
g_prefix_error (error, "While opening repository %s: ", repopath);
goto out;
}
}
self->repo = g_object_ref (repo);
}
ret = TRUE;
out:
return ret;
}
gboolean
xdg_app_dir_pull (XdgAppDir *self,
const char *repository,
const char *ref,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
GSConsole *console = NULL;
g_autoptr(OstreeAsyncProgress) progress = NULL;
const char *refs[2];
if (!xdg_app_dir_ensure_repo (self, cancellable, error))
goto out;
console = gs_console_get ();
if (console)
{
gs_console_begin_status_line (console, "", NULL, NULL);
progress = ostree_async_progress_new_and_connect (ostree_repo_pull_default_console_progress_changed, console);
}
refs[0] = ref;
refs[1] = NULL;
if (!ostree_repo_pull (self->repo, repository,
(char **)refs, OSTREE_REPO_PULL_FLAGS_NONE,
progress,
cancellable, error))
{
g_prefix_error (error, "While pulling %s from remote %s: ", ref, repository);
goto out;
}
if (console)
gs_console_end_status_line (console, NULL, NULL);
ret = TRUE;
out:
return ret;
}
char *
xdg_app_dir_current_ref (XdgAppDir *self,
const char *name,
GCancellable *cancellable)
{
g_autoptr(GFile) base = NULL;
g_autoptr(GFile) dir = NULL;
g_autoptr(GFile) current_link = NULL;
g_autoptr(GFileInfo) file_info = NULL;
base = g_file_get_child (xdg_app_dir_get_path (self), "app");
dir = g_file_get_child (base, name);
current_link = g_file_get_child (dir, "current");
file_info = g_file_query_info (current_link, OSTREE_GIO_FAST_QUERYINFO,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable, NULL);
if (file_info == NULL)
return NULL;
return g_strconcat ("app/", name, "/", g_file_info_get_symlink_target (file_info), NULL);
}
gboolean
xdg_app_dir_drop_current_ref (XdgAppDir *self,
const char *name,
GCancellable *cancellable,
GError **error)
{
g_autoptr(GFile) base = NULL;
g_autoptr(GFile) dir = NULL;
g_autoptr(GFile) current_link = NULL;
base = g_file_get_child (xdg_app_dir_get_path (self), "app");
dir = g_file_get_child (base, name);
current_link = g_file_get_child (dir, "current");
return g_file_delete (current_link, cancellable, error);
}
gboolean
xdg_app_dir_make_current_ref (XdgAppDir *self,
const char *ref,
GCancellable *cancellable,
GError **error)
{
g_autoptr(GFile) base = NULL;
g_autoptr(GFile) dir = NULL;
g_autoptr(GFile) current_link = NULL;
glnx_strfreev char **ref_parts = NULL;
g_autofree char *rest = NULL;
gboolean ret = FALSE;
ref_parts = g_strsplit (ref, "/", -1);
g_assert (g_strv_length (ref_parts) == 4);
g_assert (strcmp (ref_parts[0], "app") == 0);
base = g_file_get_child (xdg_app_dir_get_path (self), ref_parts[0]);
dir = g_file_get_child (base, ref_parts[1]);
current_link = g_file_get_child (dir, "current");
g_file_delete (current_link, cancellable, NULL);
if (*ref_parts[3] != 0)
{
rest = g_strdup_printf ("%s/%s", ref_parts[2], ref_parts[3]);
if (!g_file_make_symbolic_link (current_link, rest, cancellable, error))
goto out;
}
ret = TRUE;
out:
return ret;
}
static int
strvcmp(char **a, char **b)
{
return strcmp (*a, *b);
}
gboolean
xdg_app_dir_list_refs_for_name (XdgAppDir *self,
const char *kind,
const char *name,
char ***refs_out,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_autoptr(GFile) base = NULL;
g_autoptr(GFile) dir = NULL;
g_autoptr(GFileEnumerator) dir_enum = NULL;
g_autoptr(GFileInfo) child_info = NULL;
GError *temp_error = NULL;
g_autoptr(GPtrArray) refs = NULL;
base = g_file_get_child (xdg_app_dir_get_path (self), kind);
dir = g_file_get_child (base, name);
refs = g_ptr_array_new ();
if (!g_file_query_exists (dir, cancellable))
{
ret = TRUE;
goto out;
}
dir_enum = g_file_enumerate_children (dir, OSTREE_GIO_FAST_QUERYINFO,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable, error);
if (!dir_enum)
goto out;
while ((child_info = g_file_enumerator_next_file (dir_enum, cancellable, &temp_error)))
{
g_autoptr(GFile) child = NULL;
g_autoptr(GFileEnumerator) dir_enum2 = NULL;
g_autoptr(GFileInfo) child_info2 = NULL;
const char *arch;
arch = g_file_info_get_name (child_info);
if (g_file_info_get_file_type (child_info) != G_FILE_TYPE_DIRECTORY ||
strcmp (arch, "data") == 0 /* There used to be a data dir here, lets ignore it */)
{
g_clear_object (&child_info);
continue;
}
child = g_file_get_child (dir, arch);
g_clear_object (&dir_enum2);
dir_enum2 = g_file_enumerate_children (child, OSTREE_GIO_FAST_QUERYINFO,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable, error);
if (!dir_enum2)
goto out;
while ((child_info2 = g_file_enumerator_next_file (dir_enum2, cancellable, &temp_error)))
{
const char *branch;
if (g_file_info_get_file_type (child_info2) == G_FILE_TYPE_DIRECTORY)
{
branch = g_file_info_get_name (child_info2);
g_ptr_array_add (refs,
g_strdup_printf ("%s/%s/%s/%s", kind, name, arch, branch));
}
g_clear_object (&child_info2);
}
if (temp_error != NULL)
goto out;
g_clear_object (&child_info);
}
if (temp_error != NULL)
goto out;
g_ptr_array_sort (refs, (GCompareFunc)strvcmp);
ret = TRUE;
out:
if (ret)
{
g_ptr_array_add (refs, NULL);
*refs_out = (char **)g_ptr_array_free (refs, FALSE);
refs = NULL;
}
if (temp_error != NULL)
g_propagate_error (error, temp_error);
return ret;
}
gboolean
xdg_app_dir_list_refs (XdgAppDir *self,
const char *kind,
char ***refs_out,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_autoptr(GFile) base;
g_autoptr(GFileEnumerator) dir_enum = NULL;
g_autoptr(GFileInfo) child_info = NULL;
GError *temp_error = NULL;
g_autoptr(GPtrArray) refs = NULL;
refs = g_ptr_array_new ();
base = g_file_get_child (xdg_app_dir_get_path (self), kind);
if (!g_file_query_exists (base, cancellable))
{
ret = TRUE;
goto out;
}
dir_enum = g_file_enumerate_children (base, OSTREE_GIO_FAST_QUERYINFO,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable, error);
if (!dir_enum)
goto out;
while ((child_info = g_file_enumerator_next_file (dir_enum, cancellable, &temp_error)))
{
gchar **sub_refs = NULL;
const char *name;
int i;
if (g_file_info_get_file_type (child_info) != G_FILE_TYPE_DIRECTORY)
{
g_clear_object (&child_info);
continue;
}
name = g_file_info_get_name (child_info);
if (!xdg_app_dir_list_refs_for_name (self, kind, name, &sub_refs, cancellable, error))
goto out;
for (i = 0; sub_refs[i] != NULL; i++)
g_ptr_array_add (refs, sub_refs[i]);
g_free (sub_refs);
g_clear_object (&child_info);
}
if (temp_error != NULL)
goto out;
ret = TRUE;
g_ptr_array_sort (refs, (GCompareFunc)strvcmp);
out:
if (ret)
{
g_ptr_array_add (refs, NULL);
*refs_out = (char **)g_ptr_array_free (refs, FALSE);
refs = NULL;
}
if (temp_error != NULL)
g_propagate_error (error, temp_error);
return ret;
}
char *
xdg_app_dir_read_active (XdgAppDir *self,
const char *ref,
GCancellable *cancellable)
{
g_autoptr(GFile) deploy_base = NULL;
g_autoptr(GFile) active_link = NULL;
g_autoptr(GFileInfo) file_info = NULL;
deploy_base = xdg_app_dir_get_deploy_dir (self, ref);
active_link = g_file_get_child (deploy_base, "active");
file_info = g_file_query_info (active_link, OSTREE_GIO_FAST_QUERYINFO,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable, NULL);
if (file_info == NULL)
return NULL;
return g_strdup (g_file_info_get_symlink_target (file_info));
}
gboolean
xdg_app_dir_set_active (XdgAppDir *self,
const char *ref,
const char *checksum,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_autoptr(GFile) deploy_base = NULL;
g_autofree char *tmpname = NULL;
g_autoptr(GFile) active_tmp_link = NULL;
g_autoptr(GFile) active_link = NULL;
g_autoptr (GError) my_error = NULL;
deploy_base = xdg_app_dir_get_deploy_dir (self, ref);
active_link = g_file_get_child (deploy_base, "active");
if (checksum != NULL)
{
tmpname = gs_fileutil_gen_tmp_name (".active-", NULL);
active_tmp_link = g_file_get_child (deploy_base, tmpname);
if (!g_file_make_symbolic_link (active_tmp_link, checksum, cancellable, error))
goto out;
if (!gs_file_rename (active_tmp_link,
active_link,
cancellable, error))
goto out;
}
else
{
if (!g_file_delete (active_link, cancellable, &my_error) &&
!g_error_matches (my_error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND))
{
g_propagate_error (error, my_error);
my_error = NULL;
goto out;
}
}
ret = TRUE;
out:
return ret;
}
gboolean
xdg_app_dir_run_triggers (XdgAppDir *self,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_autoptr(GFileEnumerator) dir_enum = NULL;
g_autoptr(GFileInfo) child_info = NULL;
g_autoptr(GFile) triggersdir = NULL;
g_autoptr(GFile) exports = NULL;
GError *temp_error = NULL;
g_debug ("running triggers");
exports = xdg_app_dir_get_exports_dir (self);
triggersdir = g_file_new_for_path (XDG_APP_TRIGGERDIR);
dir_enum = g_file_enumerate_children (triggersdir, "standard::type,standard::name",
0, cancellable, error);
if (!dir_enum)
goto out;
while ((child_info = g_file_enumerator_next_file (dir_enum, cancellable, &temp_error)) != NULL)
{
g_autoptr(GFile) child = NULL;
const char *name;
GError *trigger_error = NULL;
name = g_file_info_get_name (child_info);
child = g_file_get_child (triggersdir, name);
if (g_file_info_get_file_type (child_info) == G_FILE_TYPE_REGULAR &&
g_str_has_suffix (name, ".trigger"))
{
g_autoptr(GPtrArray) argv_array = NULL;
g_debug ("running trigger %s", name);
argv_array = g_ptr_array_new_with_free_func (g_free);
g_ptr_array_add (argv_array, g_strdup (HELPER));
g_ptr_array_add (argv_array, g_strdup ("-a"));
g_ptr_array_add (argv_array, g_file_get_path (self->basedir));
g_ptr_array_add (argv_array, g_strdup ("-e"));
g_ptr_array_add (argv_array, g_strdup ("-F"));
g_ptr_array_add (argv_array, g_strdup ("/usr"));
g_ptr_array_add (argv_array, g_file_get_path (child));
g_ptr_array_add (argv_array, NULL);
if (!g_spawn_sync ("/",
(char **)argv_array->pdata,
NULL,
G_SPAWN_DEFAULT,
NULL, NULL,
NULL, NULL,
NULL, &trigger_error))
{
g_warning ("Error running trigger %s: %s", name, trigger_error->message);
g_clear_error (&trigger_error);
}
}
g_clear_object (&child_info);
}
if (temp_error != NULL)
{
g_propagate_error (error, temp_error);
goto out;
}
ret = TRUE;
out:
return ret;
}
static gboolean
read_fd (int fd,
struct stat *stat_buf,
gchar **contents,
gsize *length,
GError **error)
{
gchar *buf;
gsize bytes_read;
gsize size;
gsize alloc_size;
size = stat_buf->st_size;
alloc_size = size + 1;
buf = g_try_malloc (alloc_size);
if (buf == NULL)
{
g_set_error (error,
G_FILE_ERROR,
G_FILE_ERROR_NOMEM,
"not enough memory");
return FALSE;
}
bytes_read = 0;
while (bytes_read < size)
{
gssize rc;
rc = read (fd, buf + bytes_read, size - bytes_read);
if (rc < 0)
{
if (errno != EINTR)
{
int save_errno = errno;
g_free (buf);
g_set_error (error,
G_FILE_ERROR,
g_file_error_from_errno (save_errno),
"Failed to read from exported file");
return FALSE;
}
}
else if (rc == 0)
break;
else
bytes_read += rc;
}
buf[bytes_read] = '\0';
if (length)
*length = bytes_read;
*contents = buf;
return TRUE;
}
static gboolean
export_desktop_file (const char *app,
const char *branch,
const char *arch,
int parent_fd,
const char *name,
struct stat *stat_buf,
char **target,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
glnx_fd_close int desktop_fd = -1;
g_autofree char *tmpfile_name = NULL;
g_autoptr(GOutputStream) out_stream = NULL;
g_autofree gchar *data = NULL;
gsize data_len;
g_autofree gchar *new_data = NULL;
gsize new_data_len;
g_autoptr(GKeyFile) keyfile = NULL;
g_autofree gchar *old_exec = NULL;
gint old_argc;
glnx_strfreev gchar **old_argv = NULL;
glnx_strfreev gchar **groups = NULL;
GString *new_exec = NULL;
g_autofree char *escaped_app = g_shell_quote (app);
int i;
if (!gs_file_openat_noatime (parent_fd, name, &desktop_fd, cancellable, error))
goto out;
if (!read_fd (desktop_fd, stat_buf, &data, &data_len, error))
goto out;
keyfile = g_key_file_new ();
if (!g_key_file_load_from_data (keyfile, data, data_len, G_KEY_FILE_KEEP_TRANSLATIONS, error))
goto out;
if (g_str_has_suffix (name, ".service"))
{
g_autofree gchar *dbus_name = NULL;
g_autofree gchar *expected_dbus_name = g_strndup (name, strlen (name) - strlen (".service"));
dbus_name = g_key_file_get_string (keyfile, "D-BUS Service", "Name", NULL);
if (dbus_name == NULL || strcmp (dbus_name, expected_dbus_name) != 0)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED, "dbus service file %s has wrong name", name);
return FALSE;
}
}
groups = g_key_file_get_groups (keyfile, NULL);
for (i = 0; groups[i] != NULL; i++)
{
g_key_file_remove_key (keyfile, groups[i], "TryExec", NULL);
/* Remove this to make sure nothing tries to execute it outside the sandbox*/
g_key_file_remove_key (keyfile, groups[i], "X-GNOME-Bugzilla-ExtraInfoScript", NULL);
new_exec = g_string_new ("");
g_string_append_printf (new_exec, XDG_APP_BINDIR"/xdg-app run --branch='%s' --arch='%s'", branch, arch);
old_exec = g_key_file_get_string (keyfile, groups[i], "Exec", NULL);
if (old_exec && g_shell_parse_argv (old_exec, &old_argc, &old_argv, NULL) && old_argc >= 1)
{
int i;
g_autofree char *command = g_shell_quote (old_argv[0]);
g_string_append_printf (new_exec, " --command=%s", command);
g_string_append (new_exec, " ");
g_string_append (new_exec, escaped_app);
for (i = 1; i < old_argc; i++)
{
g_autofree char *arg = g_shell_quote (old_argv[i]);
g_string_append (new_exec, " ");
g_string_append (new_exec, arg);
}
}
else
{
g_string_append (new_exec, " ");
g_string_append (new_exec, escaped_app);
}
g_key_file_set_string (keyfile, groups[i], G_KEY_FILE_DESKTOP_KEY_EXEC, new_exec->str);
}
new_data = g_key_file_to_data (keyfile, &new_data_len, error);
if (new_data == NULL)
goto out;
if (!gs_file_open_in_tmpdir_at (parent_fd, 0755, &tmpfile_name, &out_stream, cancellable, error))
goto out;
if (!g_output_stream_write_all (out_stream, new_data, new_data_len, NULL, cancellable, error))
goto out;
if (!g_output_stream_close (out_stream, cancellable, error))
goto out;
if (target)
*target = g_steal_pointer (&tmpfile_name);
ret = TRUE;
out:
if (new_exec != NULL)
g_string_free (new_exec, TRUE);
return ret;
}
static gboolean
rewrite_export_dir (const char *app,
const char *branch,
const char *arch,
int source_parent_fd,
const char *source_name,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_auto(GLnxDirFdIterator) source_iter = {0};
g_autoptr(GHashTable) visited_children = NULL;
struct dirent *dent;
if (!glnx_dirfd_iterator_init_at (source_parent_fd, source_name, FALSE, &source_iter, error))
goto out;
visited_children = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
while (TRUE)
{
struct stat stbuf;
if (!glnx_dirfd_iterator_next_dent (&source_iter, &dent, cancellable, error))
goto out;
if (dent == NULL)
break;
if (g_hash_table_contains (visited_children, dent->d_name))
continue;
/* Avoid processing the same file again if it was re-created during an export */
g_hash_table_insert (visited_children, g_strdup (dent->d_name), GINT_TO_POINTER(1));
if (fstatat (source_iter.fd, dent->d_name, &stbuf, AT_SYMLINK_NOFOLLOW) == -1)
{
if (errno == ENOENT)
continue;
else
{
glnx_set_error_from_errno (error);
goto out;
}
}
if (S_ISDIR (stbuf.st_mode))
{
if (!rewrite_export_dir (app, branch, arch,
source_iter.fd, dent->d_name,
cancellable, error))
goto out;
}
else if (S_ISREG (stbuf.st_mode))
{
g_autofree gchar *target = NULL;
if (!xdg_app_has_name_prefix (dent->d_name, app))
{
g_warning ("Non-prefixed filename %s in app %s, removing.\n", dent->d_name, app);
if (unlinkat (source_iter.fd, dent->d_name, 0) != 0 && errno != ENOENT)
{
glnx_set_error_from_errno (error);
goto out;
}
}
if (g_str_has_suffix (dent->d_name, ".desktop") || g_str_has_suffix (dent->d_name, ".service"))
{
g_autofree gchar *new_name = NULL;
if (!export_desktop_file (app, branch, arch, source_iter.fd, dent->d_name, &stbuf, &new_name, cancellable, error))
goto out;
g_hash_table_insert (visited_children, g_strdup (new_name), GINT_TO_POINTER(1));
if (renameat (source_iter.fd, new_name, source_iter.fd, dent->d_name) != 0)
{
glnx_set_error_from_errno (error);
goto out;
}
}
}
else
{
g_warning ("Not exporting file %s of unsupported type\n", dent->d_name);
if (unlinkat (source_iter.fd, dent->d_name, 0) != 0 && errno != ENOENT)
{
glnx_set_error_from_errno (error);
goto out;
}
}
}
ret = TRUE;
out:
return ret;
}
gboolean
xdg_app_rewrite_export_dir (const char *app,
const char *branch,
const char *arch,
GFile *source,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
/* The fds are closed by this call */
if (!rewrite_export_dir (app, branch, arch,
AT_FDCWD, gs_file_get_path_cached (source),
cancellable, error))
goto out;
ret = TRUE;
out:
return ret;
}
static gboolean
export_dir (int source_parent_fd,
const char *source_name,
const char *source_symlink_prefix,
const char *source_relpath,
int destination_parent_fd,
const char *destination_name,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
int res;
g_auto(GLnxDirFdIterator) source_iter = {0};
glnx_fd_close int destination_dfd = -1;
struct dirent *dent;
if (!glnx_dirfd_iterator_init_at (source_parent_fd, source_name, FALSE, &source_iter, error))
goto out;
do
res = mkdirat (destination_parent_fd, destination_name, 0777);
while (G_UNLIKELY (res == -1 && errno == EINTR));
if (res == -1)
{
if (errno != EEXIST)
{
glnx_set_error_from_errno (error);
goto out;
}
}
if (!gs_file_open_dir_fd_at (destination_parent_fd, destination_name,
&destination_dfd,
cancellable, error))
goto out;
while (TRUE)
{
struct stat stbuf;
if (!glnx_dirfd_iterator_next_dent (&source_iter, &dent, cancellable, error))
goto out;
if (dent == NULL)
break;
if (fstatat (source_iter.fd, dent->d_name, &stbuf, AT_SYMLINK_NOFOLLOW) == -1)
{
if (errno == ENOENT)
continue;
else
{
glnx_set_error_from_errno (error);
goto out;
}
}
if (S_ISDIR (stbuf.st_mode))
{
g_autofree gchar *child_symlink_prefix = g_build_filename ("..", source_symlink_prefix, dent->d_name, NULL);
g_autofree gchar *child_relpath = g_strconcat (source_relpath, dent->d_name, "/", NULL);
if (!export_dir (source_iter.fd, dent->d_name, child_symlink_prefix, child_relpath, destination_dfd, dent->d_name,
cancellable, error))
goto out;
}
else if (S_ISREG (stbuf.st_mode))
{
g_autofree gchar *target = NULL;
target = g_build_filename (source_symlink_prefix, dent->d_name, NULL);
if (unlinkat (destination_dfd, dent->d_name, 0) != 0 && errno != ENOENT)
{
glnx_set_error_from_errno (error);
goto out;
}
if (symlinkat (target, destination_dfd, dent->d_name) != 0)
{
glnx_set_error_from_errno (error);
goto out;
}
}
}
ret = TRUE;
out:
return ret;
}
gboolean
xdg_app_export_dir (GFile *source,
GFile *destination,
const char *symlink_prefix,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
if (!gs_file_ensure_directory (destination, TRUE, cancellable, error))
goto out;
/* The fds are closed by this call */
if (!export_dir (AT_FDCWD, gs_file_get_path_cached (source), symlink_prefix, "",
AT_FDCWD, gs_file_get_path_cached (destination),
cancellable, error))
goto out;
ret = TRUE;
out:
return ret;
}
gboolean
xdg_app_dir_update_exports (XdgAppDir *self,
const char *changed_app,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_autoptr(GFile) exports = NULL;
g_autofree char *current_ref = NULL;
g_autofree char *active_id = NULL;
g_autofree char *symlink_prefix = NULL;
exports = xdg_app_dir_get_exports_dir (self);
if (!gs_file_ensure_directory (exports, TRUE, cancellable, error))
goto out;
if (changed_app &&
(current_ref = xdg_app_dir_current_ref (self, changed_app, cancellable)) &&
(active_id = xdg_app_dir_read_active (self, current_ref, cancellable)))
{
g_autoptr(GFile) deploy_base = NULL;
g_autoptr(GFile) active = NULL;
g_autoptr(GFile) export = NULL;
deploy_base = xdg_app_dir_get_deploy_dir (self, current_ref);
active = g_file_get_child (deploy_base, active_id);
export = g_file_get_child (active, "export");
if (g_file_query_exists (export, cancellable))
{
symlink_prefix = g_build_filename ("..", "app", changed_app, "current", "active", "export", NULL);
if (!xdg_app_export_dir (export, exports,
symlink_prefix,
cancellable,
error))
goto out;
}
}
if (!xdg_app_remove_dangling_symlinks (exports, cancellable, error))
goto out;
if (!xdg_app_dir_run_triggers (self, cancellable, error))
goto out;
ret = TRUE;
out:
return ret;
}
gboolean
xdg_app_dir_deploy (XdgAppDir *self,
const char *ref,
const char *checksum,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_autofree char *resolved_ref = NULL;
g_autoptr(GFile) root = NULL;
g_autoptr(GFileInfo) file_info = NULL;
g_autoptr(GFile) deploy_base = NULL;
g_autoptr(GFile) checkoutdir = NULL;
g_autoptr(GFile) dotref = NULL;
g_autoptr(GFile) export = NULL;
g_autoptr(GFile) exports = NULL;
if (!xdg_app_dir_ensure_repo (self, cancellable, error))
goto out;
deploy_base = xdg_app_dir_get_deploy_dir (self, ref);
if (checksum == NULL)
{
g_debug ("No checksum specified, getting tip of %s", ref);
if (!ostree_repo_resolve_rev (self->repo, ref, FALSE, &resolved_ref, error))
{
g_prefix_error (error, "While trying to resolve ref %s: ", ref);
goto out;
}
checksum = resolved_ref;
}
else
{
g_autoptr(GFile) root = NULL;
g_autofree char *commit = NULL;
g_debug ("Looking for checksum %s in local repo", checksum);
if (!ostree_repo_read_commit (self->repo, checksum, &root, &commit, cancellable, NULL))
{
GSConsole *console = NULL;
g_autoptr(OstreeAsyncProgress) progress = NULL;
const char *refs[2];
g_autoptr(GFile) origin = NULL;
g_autofree char *repository = NULL;
refs[0] = checksum;
refs[1] = NULL;
origin = g_file_get_child (deploy_base, "origin");
if (!g_file_load_contents (origin, cancellable, &repository, NULL, NULL, error))
goto out;
g_debug ("Pulling checksum %s from remote %s", checksum, repository);
console = gs_console_get ();
if (console)
{
gs_console_begin_status_line (console, "", NULL, NULL);
progress = ostree_async_progress_new_and_connect (ostree_repo_pull_default_console_progress_changed, console);
}
if (!ostree_repo_pull (self->repo, repository,
(char **)refs, OSTREE_REPO_PULL_FLAGS_NONE,
progress,
cancellable, error))
{
g_prefix_error (error, "Failed to pull %s from remote %s: ", checksum, repository);
goto out;
}
}
}
checkoutdir = g_file_get_child (deploy_base, checksum);
if (g_file_query_exists (checkoutdir, cancellable))
{
g_set_error (error, XDG_APP_DIR_ERROR,
XDG_APP_DIR_ERROR_ALREADY_DEPLOYED,
"%s version %s already deployed", ref, checksum);
goto out;
}
if (!ostree_repo_read_commit (self->repo, checksum, &root, NULL, cancellable, error))
{
g_prefix_error (error, "Failed to read commit %s: ", checksum);
goto out;
}
file_info = g_file_query_info (root, OSTREE_GIO_FAST_QUERYINFO,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable, error);
if (file_info == NULL)
goto out;
if (!ostree_repo_checkout_tree (self->repo,
self->user ? OSTREE_REPO_CHECKOUT_MODE_USER : OSTREE_REPO_CHECKOUT_MODE_NONE,
OSTREE_REPO_CHECKOUT_OVERWRITE_NONE,
checkoutdir,
OSTREE_REPO_FILE (root), file_info,
cancellable, error))
{
g_autofree char *rootpath = NULL;
g_autofree char *checkoutpath = NULL;
rootpath = g_file_get_path (root);
checkoutpath = g_file_get_path (checkoutdir);
g_prefix_error (error, "While trying to checkout %s into %s: ", rootpath, checkoutpath);
goto out;
}
dotref = g_file_resolve_relative_path (checkoutdir, "files/.ref");
if (!g_file_replace_contents (dotref, "", 0, NULL, FALSE,
G_FILE_CREATE_NONE, NULL, cancellable, error))
goto out;
exports = xdg_app_dir_get_exports_dir (self);
export = g_file_get_child (checkoutdir, "export");
if (g_file_query_exists (export, cancellable))
{
glnx_strfreev char **ref_parts = NULL;
ref_parts = g_strsplit (ref, "/", -1);
if (!xdg_app_rewrite_export_dir (ref_parts[1], ref_parts[3], ref_parts[2], export,
cancellable,
error))
goto out;
}
if (!xdg_app_dir_set_active (self, ref, checksum, cancellable, error))
goto out;
ret = TRUE;
out:
return ret;
}
gboolean
xdg_app_dir_collect_deployed_refs (XdgAppDir *self,
const char *type,
const char *name_prefix,
const char *branch,
const char *arch,
GHashTable *hash,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_autoptr(GFile) dir = NULL;
g_autoptr(GFileEnumerator) dir_enum = NULL;
g_autoptr(GFileInfo) child_info = NULL;
GError *temp_error = NULL;
dir = g_file_get_child (self->basedir, type);
if (!g_file_query_exists (dir, cancellable))
return TRUE;
dir_enum = g_file_enumerate_children (dir, OSTREE_GIO_FAST_QUERYINFO,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable,
error);
if (!dir_enum)
goto out;
while ((child_info = g_file_enumerator_next_file (dir_enum, cancellable, &temp_error)) != NULL)
{
const char *name = g_file_info_get_name (child_info);
if (g_file_info_get_file_type (child_info) == G_FILE_TYPE_DIRECTORY &&
name[0] != '.' && (name_prefix == NULL || g_str_has_prefix (name, name_prefix)))
{
g_autoptr(GFile) child1 = g_file_get_child (dir, name);
g_autoptr(GFile) child2 = g_file_get_child (child1, branch);
g_autoptr(GFile) child3 = g_file_get_child (child2, arch);
g_autoptr(GFile) active = g_file_get_child (child3, "active");
if (g_file_query_exists (active, cancellable))
g_hash_table_add (hash, g_strdup (name));
}
g_clear_object (&child_info);
}
if (temp_error != NULL)
{
g_propagate_error (error, temp_error);
goto out;
}
ret = TRUE;
out:
return ret;
}
gboolean
xdg_app_dir_list_deployed (XdgAppDir *self,
const char *ref,
char ***deployed_checksums,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_autoptr(GFile) deploy_base = NULL;
g_autoptr(GPtrArray) checksums = NULL;
GError *temp_error = NULL;
g_autoptr(GFileEnumerator) dir_enum = NULL;
g_autoptr(GFile) child = NULL;
g_autoptr(GFileInfo) child_info = NULL;
deploy_base = xdg_app_dir_get_deploy_dir (self, ref);
checksums = g_ptr_array_new_with_free_func (g_free);
dir_enum = g_file_enumerate_children (deploy_base, OSTREE_GIO_FAST_QUERYINFO,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable,
error);
if (!dir_enum)
goto out;
while ((child_info = g_file_enumerator_next_file (dir_enum, cancellable, &temp_error)) != NULL)
{
const char *name;
name = g_file_info_get_name (child_info);
g_clear_object (&child);
child = g_file_get_child (deploy_base, name);
if (g_file_info_get_file_type (child_info) == G_FILE_TYPE_DIRECTORY &&
name[0] != '.' &&
strlen (name) == 64)
g_ptr_array_add (checksums, g_strdup (name));
g_clear_object (&child_info);
}
if (temp_error != NULL)
{
g_propagate_error (error, temp_error);
goto out;
}
g_ptr_array_add (checksums, NULL);
*deployed_checksums = (char **)g_ptr_array_free (checksums, FALSE);
checksums = NULL;
ret = TRUE;
out:
return ret;
}
static gboolean
dir_is_locked (GFile *dir)
{
glnx_fd_close int ref_fd = -1;
struct flock lock = {0};
g_autoptr(GFile) reffile = NULL;
reffile = g_file_resolve_relative_path (dir, "files/.ref");
ref_fd = open (gs_file_get_path_cached (reffile), O_RDWR | O_CLOEXEC);
if (ref_fd != -1)
{
lock.l_type = F_WRLCK;
lock.l_whence = SEEK_SET;
lock.l_start = 0;
lock.l_len = 0;
if (fcntl (ref_fd, F_GETLK, &lock) == 0)
return lock.l_type != F_UNLCK;
}
return FALSE;
}
gboolean
xdg_app_dir_undeploy (XdgAppDir *self,
const char *ref,
const char *checksum,
gboolean force_remove,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_autoptr(GFile) deploy_base = NULL;
g_autoptr(GFile) checkoutdir = NULL;
g_autoptr(GFile) removed_subdir = NULL;
g_autoptr(GFile) removed_dir = NULL;
g_autofree char *tmpname = NULL;
g_autofree char *active = NULL;
int i;
g_assert (ref != NULL);
g_assert (checksum != NULL);
deploy_base = xdg_app_dir_get_deploy_dir (self, ref);
checkoutdir = g_file_get_child (deploy_base, checksum);
if (!g_file_query_exists (checkoutdir, cancellable))
{
g_set_error (error, XDG_APP_DIR_ERROR,
XDG_APP_DIR_ERROR_ALREADY_UNDEPLOYED,
"%s version %s already undeployed", ref, checksum);
goto out;
}
if (!xdg_app_dir_ensure_repo (self, cancellable, error))
goto out;
active = xdg_app_dir_read_active (self, ref, cancellable);
if (active != NULL && strcmp (active, checksum) == 0)
{
glnx_strfreev char **deployed_checksums = NULL;
const char *some_deployment;
/* We're removing the active deployment, start by repointing that
to another deployment if one exists */
if (!xdg_app_dir_list_deployed (self, ref,
&deployed_checksums,
cancellable, error))
goto out;
some_deployment = NULL;
for (i = 0; deployed_checksums[i] != NULL; i++)
{
if (strcmp (deployed_checksums[i], checksum) == 0)
continue;
some_deployment = deployed_checksums[i];
break;
}
if (!xdg_app_dir_set_active (self, ref, some_deployment, cancellable, error))
goto out;
}
removed_dir = xdg_app_dir_get_removed_dir (self);
if (!gs_file_ensure_directory (removed_dir, TRUE, cancellable, error))
goto out;
tmpname = gs_fileutil_gen_tmp_name ("", checksum);
removed_subdir = g_file_get_child (removed_dir, tmpname);
if (!gs_file_rename (checkoutdir,
removed_subdir,
cancellable, error))
goto out;
if (force_remove || !dir_is_locked (removed_subdir))
{
if (!gs_shutil_rm_rf (removed_subdir, cancellable, error))
goto out;
}
ret = TRUE;
out:
return ret;
}
gboolean
xdg_app_dir_cleanup_removed (XdgAppDir *self,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
g_autoptr(GFile) removed_dir = NULL;
g_autoptr(GFileEnumerator) dir_enum = NULL;
g_autoptr(GFileInfo) child_info = NULL;
GError *temp_error = NULL;
removed_dir = xdg_app_dir_get_removed_dir (self);
if (!g_file_query_exists (removed_dir, cancellable))
return TRUE;
dir_enum = g_file_enumerate_children (removed_dir, OSTREE_GIO_FAST_QUERYINFO,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable,
error);
if (!dir_enum)
goto out;
while ((child_info = g_file_enumerator_next_file (dir_enum, cancellable, &temp_error)) != NULL)
{
const char *name = g_file_info_get_name (child_info);
g_autoptr(GFile) child = g_file_get_child (removed_dir, name);
if (g_file_info_get_file_type (child_info) == G_FILE_TYPE_DIRECTORY &&
!dir_is_locked (child))
{
gs_shutil_rm_rf (child, cancellable, NULL);
}
g_clear_object (&child_info);
}
if (temp_error != NULL)
{
g_propagate_error (error, temp_error);
goto out;
}
ret = TRUE;
out:
return ret;
}
gboolean
xdg_app_dir_prune (XdgAppDir *self,
GCancellable *cancellable,
GError **error)
{
gboolean ret = FALSE;
gint objects_total, objects_pruned;
guint64 pruned_object_size_total;
g_autofree char *formatted_freed_size = NULL;
if (!xdg_app_dir_ensure_repo (self, cancellable, error))
goto out;
if (!ostree_repo_prune (self->repo,
OSTREE_REPO_PRUNE_FLAGS_REFS_ONLY,
0,
&objects_total,
&objects_pruned,
&pruned_object_size_total,
cancellable, error))
goto out;
formatted_freed_size = g_format_size_full (pruned_object_size_total, 0);
g_debug ("Pruned %d/%d objects, size %s", objects_total, objects_pruned, formatted_freed_size);
ret = TRUE;
out:
return ret;
}
GFile *
xdg_app_dir_get_if_deployed (XdgAppDir *self,
const char *ref,
const char *checksum,
GCancellable *cancellable)
{
g_autoptr(GFile) deploy_base = NULL;
g_autoptr(GFile) deploy_dir = NULL;
deploy_base = xdg_app_dir_get_deploy_dir (self, ref);
deploy_dir = g_file_get_child (deploy_base, checksum ? checksum : "active");
if (g_file_query_file_type (deploy_dir, G_FILE_QUERY_INFO_NONE, cancellable) == G_FILE_TYPE_DIRECTORY)
return g_object_ref (deploy_dir);
return NULL;
}
XdgAppDir*
xdg_app_dir_new (GFile *path, gboolean user)
{
return g_object_new (XDG_APP_TYPE_DIR, "path", path, "user", user, NULL);
}
XdgAppDir *
xdg_app_dir_get_system (void)
{
static XdgAppDir *system = NULL;
if (system == NULL)
{
g_autoptr(GFile) path = xdg_app_get_system_base_dir_location ();
system = xdg_app_dir_new (path, FALSE);
}
return g_object_ref (system);
}
XdgAppDir *
xdg_app_dir_get_user (void)
{
static XdgAppDir *user = NULL;
if (user == NULL)
{
g_autoptr(GFile) path = xdg_app_get_user_base_dir_location ();
user = xdg_app_dir_new (path, TRUE);
}
return g_object_ref (user);
}
XdgAppDir *
xdg_app_dir_get (gboolean user)
{
if (user)
return xdg_app_dir_get_user ();
else
return xdg_app_dir_get_system ();
}
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