/*
* e-migrate-base-dirs.c
*
* 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) version 3.
*
* This program 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 the program; if not, see <http://www.gnu.org/licenses/>
*
*/
#include <errno.h>
#include <string.h>
#include <glib/gstdio.h>
#include <shell/e-shell.h>
/* Forward Declarations */
void e_migrate_base_dirs (EShell *shell);
/* These are the known EShellBackend names as of Evolution 3.0 */
static const gchar *shell_backend_names[] =
{ "addressbook", "calendar", "mail", "memos", "tasks", NULL };
static gboolean
shell_xdg_migrate_rename (const gchar *old_filename,
const gchar *new_filename)
{
gboolean old_filename_is_dir;
gboolean old_filename_exists;
gboolean new_filename_exists;
gboolean success = TRUE;
old_filename_is_dir = g_file_test (old_filename, G_FILE_TEST_IS_DIR);
old_filename_exists = g_file_test (old_filename, G_FILE_TEST_EXISTS);
new_filename_exists = g_file_test (new_filename, G_FILE_TEST_EXISTS);
if (!old_filename_exists)
return TRUE;
g_print (" mv %s %s\n", old_filename, new_filename);
/* It's safe to go ahead and move directories because rename ()
* will fail if the new directory already exists with content.
* With regular files we have to be careful not to overwrite
* new files with old files. */
if (old_filename_is_dir || !new_filename_exists) {
if (g_rename (old_filename, new_filename) < 0) {
g_printerr (" FAILED: %s\n", g_strerror (errno));
success = FALSE;
}
} else {
g_printerr (" FAILED: Destination file already exists\n");
success = FALSE;
}
return success;
}
static gboolean
shell_xdg_migrate_rmdir (const gchar *dirname)
{
GDir *dir = NULL;
gboolean success = TRUE;
if (g_file_test (dirname, G_FILE_TEST_IS_DIR)) {
g_print (" rmdir %s\n", dirname);
if (g_rmdir (dirname) < 0) {
g_printerr (" FAILED: %s", g_strerror (errno));
if (errno == ENOTEMPTY) {
dir = g_dir_open (dirname, 0, NULL);
g_printerr (" (contents follows)");
}
g_printerr ("\n");
success = FALSE;
}
}
/* List the directory's contents to aid debugging. */
if (dir != NULL) {
const gchar *basename;
/* Align the filenames beneath the error message. */
while ((basename = g_dir_read_name (dir)) != NULL)
g_print (" %s\n", basename);
g_dir_close (dir);
}
return success;
}
static void
shell_xdg_migrate_process_corrections (GHashTable *corrections)
{
GHashTableIter iter;
gpointer old_filename;
gpointer new_filename;
g_hash_table_iter_init (&iter, corrections);
while (g_hash_table_iter_next (&iter, &old_filename, &new_filename)) {
gboolean is_directory;
is_directory = g_file_test (old_filename, G_FILE_TEST_IS_DIR);
/* If the old filename is a directory and the new filename
* is NULL, treat it as a request to remove the directory. */
if (is_directory && new_filename == NULL)
shell_xdg_migrate_rmdir (old_filename);
else
shell_xdg_migrate_rename (old_filename, new_filename);
g_hash_table_iter_remove (&iter);
}
}
static gboolean
shell_xdg_migrate_rename_files (const gchar *src_directory,
const gchar *dst_directory)
{
GDir *dir;
GHashTable *corrections;
const gchar *basename;
const gchar *home_dir;
gchar *old_base_dir;
gchar *new_base_dir;
dir = g_dir_open (src_directory, 0, NULL);
if (dir == NULL)
return FALSE;
/* This is to avoid renaming files which we're iterating over the
* directory. POSIX says the outcome of that is unspecified. */
corrections = g_hash_table_new_full (
g_str_hash, g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) g_free);
g_mkdir_with_parents (dst_directory, 0700);
home_dir = g_get_home_dir ();
old_base_dir = g_build_filename (home_dir, ".evolution", NULL);
e_filename_make_safe (old_base_dir);
new_base_dir = g_strdup (e_get_user_data_dir ());
e_filename_make_safe (new_base_dir);
while ((basename = g_dir_read_name (dir)) != NULL) {
GString *buffer;
gchar *old_filename;
gchar *new_filename;
gchar *cp;
buffer = g_string_new (basename);
if ((cp = strstr (basename, old_base_dir)) != NULL) {
g_string_erase (
buffer, cp - basename,
strlen (old_base_dir));
g_string_insert (
buffer, cp - basename, new_base_dir);
}
old_filename = g_build_filename (
src_directory, basename, NULL);
new_filename = g_build_filename (
dst_directory, buffer->str, NULL);
g_string_free (buffer, TRUE);
g_hash_table_insert (corrections, old_filename, new_filename);
}
g_free (old_base_dir);
g_free (new_base_dir);
g_dir_close (dir);
shell_xdg_migrate_process_corrections (corrections);
g_hash_table_destroy (corrections);
/* It's tempting to want to remove the source directory here.
* Don't. We might be iterating over the source directory's
* parent directory, and removing the source directory would
* screw up the iteration. */
return TRUE;
}
static gboolean
shell_xdg_migrate_move_contents (const gchar *src_directory,
const gchar *dst_directory)
{
GDir *dir;
GHashTable *corrections;
const gchar *basename;
dir = g_dir_open (src_directory, 0, NULL);
if (dir == NULL)
return FALSE;
/* This is to avoid renaming files which we're iterating over the
* directory. POSIX says the outcome of that is unspecified. */
corrections = g_hash_table_new_full (
g_str_hash, g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) g_free);
g_mkdir_with_parents (dst_directory, 0700);
while ((basename = g_dir_read_name (dir)) != NULL) {
gchar *old_filename;
gchar *new_filename;
old_filename = g_build_filename (src_directory, basename, NULL);
new_filename = g_build_filename (dst_directory, basename, NULL);
g_hash_table_insert (corrections, old_filename, new_filename);
}
g_dir_close (dir);
shell_xdg_migrate_process_corrections (corrections);
g_hash_table_destroy (corrections);
/* It's tempting to want to remove the source directory here.
* Don't. We might be iterating over the source directory's
* parent directory, and removing the source directory would
* screw up the iteration. */
return TRUE;
}
static void
shell_xdg_migrate_cache_dir (EShell *shell,
const gchar *old_base_dir)
{
const gchar *new_cache_dir;
gchar *old_cache_dir;
gchar *old_filename;
gchar *new_filename;
old_cache_dir = g_build_filename (old_base_dir, "cache", NULL);
new_cache_dir = e_get_user_cache_dir ();
g_print ("Migrating cached data\n");
g_mkdir_with_parents (new_cache_dir, 0700);
old_filename = g_build_filename (old_cache_dir, "http", NULL);
new_filename = g_build_filename (new_cache_dir, "http", NULL);
shell_xdg_migrate_rename (old_filename, new_filename);
g_free (old_filename);
g_free (new_filename);
old_filename = g_build_filename (old_cache_dir, "tmp", NULL);
new_filename = g_build_filename (new_cache_dir, "tmp", NULL);
shell_xdg_migrate_rename (old_filename, new_filename);
g_free (old_filename);
g_free (new_filename);
/* Try to remove the old cache directory. Good chance this will
* fail on the first try, since E-D-S puts stuff here too. */
shell_xdg_migrate_rmdir (old_cache_dir);
g_free (old_cache_dir);
}
static void
shell_xdg_migrate_config_dir_common (EShell *shell,
const gchar *old_base_dir,
const gchar *backend_name)
{
GDir *dir;
const gchar *user_config_dir;
gchar *old_config_dir;
gchar *new_config_dir;
gchar *old_filename;
gchar *new_filename;
gchar *dirname;
user_config_dir = e_get_user_config_dir ();
old_config_dir = g_build_filename (old_base_dir, backend_name, NULL);
new_config_dir = g_build_filename (user_config_dir, backend_name, NULL);
g_mkdir_with_parents (new_config_dir, 0700);
old_filename = g_build_filename (old_config_dir, "views", NULL);
new_filename = g_build_filename (new_config_dir, "views", NULL);
shell_xdg_migrate_rename_files (old_filename, new_filename);
g_free (old_filename);
g_free (new_filename);
old_filename = g_build_filename (old_config_dir, "searches.xml", NULL);
new_filename = g_build_filename (new_config_dir, "searches.xml", NULL);
shell_xdg_migrate_rename (old_filename, new_filename);
g_free (old_filename);
g_free (new_filename);
/* This one only occurs in calendar and memos.
* For other backends this will just be a no-op. */
old_filename = g_build_filename (
old_config_dir, "config", "MemoPad", NULL);
new_filename = g_build_filename (new_config_dir, "MemoPad", NULL);
shell_xdg_migrate_rename (old_filename, new_filename);
g_free (old_filename);
g_free (new_filename);
/* This one only occurs in calendar and tasks.
* For other backends this will just be a no-op. */
old_filename = g_build_filename (
old_config_dir, "config", "TaskPad", NULL);
new_filename = g_build_filename (new_config_dir, "TaskPad", NULL);
shell_xdg_migrate_rename (old_filename, new_filename);
g_free (old_filename);
g_free (new_filename);
/* Subtle name change: config/state --> state.ini */
old_filename = g_build_filename (old_config_dir, "config", "state", NULL);
new_filename = g_build_filename (new_config_dir, "state.ini", NULL);
shell_xdg_migrate_rename (old_filename, new_filename);
g_free (old_filename);
g_free (new_filename);
/* GIO had a bug for awhile where it would leave behind an empty
* temp file with the pattern .goutputstream-XXXXXX if an output
* stream operation was cancelled. We've had several reports of
* these files in config directories, so remove any we find. */
dirname = g_build_filename (old_config_dir, "config", NULL);
dir = g_dir_open (dirname, 0, NULL);
if (dir != NULL) {
const gchar *basename;
while ((basename = g_dir_read_name (dir)) != NULL) {
gchar *filename;
struct stat st;
if (!g_str_has_prefix (basename, ".goutputstream"))
continue;
filename = g_build_filename (dirname, basename, NULL);
/* Verify the file is indeed empty. */
if (g_stat (filename, &st) == 0 && st.st_size == 0)
g_unlink (filename);
g_free (filename);
}
g_dir_close (dir);
}
g_free (dirname);
g_free (old_config_dir);
g_free (new_config_dir);
}
static void
shell_xdg_migrate_config_dir_mail (EShell *shell,
const gchar *old_base_dir)
{
const gchar *user_config_dir;
gchar *old_config_dir;
gchar *new_config_dir;
gchar *old_filename;
gchar *new_filename;
user_config_dir = e_get_user_config_dir ();
old_config_dir = g_build_filename (old_base_dir, "mail", NULL);
new_config_dir = g_build_filename (user_config_dir, "mail", NULL);
old_filename = g_build_filename (old_config_dir, "filters.xml", NULL);
new_filename = g_build_filename (new_config_dir, "filters.xml", NULL);
shell_xdg_migrate_rename (old_filename, new_filename);
g_free (old_filename);
g_free (new_filename);
old_filename = g_build_filename (old_config_dir, "vfolders.xml", NULL);
new_filename = g_build_filename (new_config_dir, "vfolders.xml", NULL);
shell_xdg_migrate_rename (old_filename, new_filename);
g_free (old_filename);
g_free (new_filename);
/* I hate this file. GtkHtml uses style properties for fonts. */
old_filename = g_build_filename (
old_config_dir, "config", "gtkrc-mail-fonts", NULL);
new_filename = g_build_filename (
new_config_dir, "gtkrc-mail-fonts", NULL);
shell_xdg_migrate_rename (old_filename, new_filename);
g_free (old_filename);
g_free (new_filename);
/* This file is no longer used. Try removing it. */
old_filename = g_build_filename (
old_config_dir, "config",
"folder-tree-expand-state.xml", NULL);
g_unlink (old_filename);
g_free (old_filename);
/* Everything else in the "config" directory just should be
* per-folder ETree files recording the expanded state of mail
* threads. Rename this directory to "folders". */
old_filename = g_build_filename (old_config_dir, "config", NULL);
new_filename = g_build_filename (new_config_dir, "folders", NULL);
shell_xdg_migrate_rename_files (old_filename, new_filename);
g_free (old_filename);
g_free (new_filename);
g_free (old_config_dir);
g_free (new_config_dir);
}
static void
shell_xdg_migrate_dir_cleanup (EShell *shell,
const gchar *old_base_dir,
const gchar *backend_name,
const gchar *dir_name)
{
gchar *dirname;
dirname = g_build_filename (
old_base_dir, backend_name, dir_name, NULL);
shell_xdg_migrate_rmdir (dirname);
g_free (dirname);
}
static void
shell_xdg_migrate_config_dir (EShell *shell,
const gchar *old_base_dir)
{
const gchar *old_config_dir;
const gchar *new_config_dir;
gchar *old_filename;
gchar *new_filename;
gint ii;
g_print ("Migrating config data\n");
/* Some files are common to all shell backends. */
for (ii = 0; shell_backend_names[ii] != NULL; ii++)
shell_xdg_migrate_config_dir_common (
shell, old_base_dir, shell_backend_names[ii]);
/* Handle backend-specific files. */
shell_xdg_migrate_config_dir_mail (shell, old_base_dir);
/* Remove leftover config directories. */
for (ii = 0; shell_backend_names[ii] != NULL; ii++) {
shell_xdg_migrate_dir_cleanup (
shell, old_base_dir, shell_backend_names[ii], "config");
shell_xdg_migrate_dir_cleanup (
shell, old_base_dir, shell_backend_names[ii], "views");
}
/*** Miscellaneous configuration files. ***/
old_config_dir = old_base_dir;
new_config_dir = e_get_user_config_dir ();
/* Subtle name change: datetime-formats --> datetime-formats.ini */
old_filename = g_build_filename (old_config_dir, "datetime-formats", NULL);
new_filename = g_build_filename (new_config_dir, "datetime-formats.ini", NULL);
shell_xdg_migrate_rename (old_filename, new_filename);
g_free (old_filename);
g_free (new_filename);
/* Subtle name change: printing --> printing.ini */
old_filename = g_build_filename (old_config_dir, "printing", NULL);
new_filename = g_build_filename (new_config_dir, "printing.ini", NULL);
shell_xdg_migrate_rename (old_filename, new_filename);
g_free (old_filename);
g_free (new_filename);
}
static void
shell_xdg_migrate_data_dir (EShell *shell,
const gchar *old_base_dir)
{
GDir *dir;
GHashTable *corrections;
const gchar *basename;
const gchar *old_data_dir;
const gchar *new_data_dir;
gchar *src_directory;
gchar *dst_directory;
g_print ("Migrating local user data\n");
old_data_dir = old_base_dir;
new_data_dir = e_get_user_data_dir ();
/* The mail hierarchy is complex and Camel doesn't distinguish
* between user data files and disposable cache files, so just
* move everything to the data directory for now. We'll sort
* it out sometime down the road. */
src_directory = g_build_filename (old_data_dir, "mail", NULL);
dst_directory = g_build_filename (new_data_dir, "mail", NULL);
dir = g_dir_open (src_directory, 0, NULL);
if (dir == NULL)
goto skip_mail;
/* This is to avoid removing directories while we're iterating
* over the parent directory. POSIX says the outcome of that
* is unspecified. */
corrections = g_hash_table_new_full (
g_str_hash, g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) g_free);
/* Iterate over the base CamelProvider directories. */
while ((basename = g_dir_read_name (dir)) != NULL) {
gchar *provider_src_directory;
gchar *provider_dst_directory;
provider_src_directory =
g_build_filename (src_directory, basename, NULL);
provider_dst_directory =
g_build_filename (dst_directory, basename, NULL);
if (!g_file_test (provider_src_directory, G_FILE_TEST_IS_DIR)) {
g_free (provider_src_directory);
g_free (provider_dst_directory);
continue;
}
shell_xdg_migrate_move_contents (
provider_src_directory, provider_dst_directory);
g_hash_table_insert (corrections, provider_src_directory, NULL);
g_free (provider_dst_directory);
}
g_dir_close (dir);
/* Remove the old base CamelProvider directories. */
shell_xdg_migrate_process_corrections (corrections);
g_hash_table_destroy (corrections);
skip_mail:
g_free (src_directory);
g_free (dst_directory);
/* We don't want to move the source directory directly because the
* destination directory may already exist with content. Instead
* we want to merge the content of the source directory into the
* destination directory.
*
* For example, given:
*
* $(src_directory)/A and $(dst_directory)/B
* $(src_directory)/C
*
* we want to end up with:
*
* $(dst_directory)/A
* $(dst_directory)/B
* $(dst_directory)/C
*
* Any name collisions will be left in the source directory.
*/
src_directory = g_build_filename (old_data_dir, "signatures", NULL);
dst_directory = g_build_filename (new_data_dir, "signatures", NULL);
shell_xdg_migrate_move_contents (src_directory, dst_directory);
shell_xdg_migrate_rmdir (src_directory);
g_free (src_directory);
g_free (dst_directory);
/* Move all remaining regular files to the new data directory. */
dir = g_dir_open (old_data_dir, 0, NULL);
if (dir == NULL)
return;
/* This is to avoid renaming files while we're iterating over the
* directory. POSIX says the outcome of that is unspecified. */
corrections = g_hash_table_new_full (
g_str_hash, g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) g_free);
while ((basename = g_dir_read_name (dir)) != NULL) {
gchar *old_filename;
gchar *new_filename;
old_filename = g_build_filename (old_data_dir, basename, NULL);
new_filename = g_build_filename (new_data_dir, basename, NULL);
/* If we encounter a directory, try removing it. This
* will only work if the directory is empty, so there's
* no risk of data loss. */
if (g_file_test (old_filename, G_FILE_TEST_IS_DIR)) {
shell_xdg_migrate_rmdir (old_filename);
g_free (old_filename);
g_free (new_filename);
continue;
}
g_hash_table_insert (corrections, old_filename, new_filename);
}
g_dir_close (dir);
shell_xdg_migrate_process_corrections (corrections);
g_hash_table_destroy (corrections);
}
void
e_migrate_base_dirs (EShell *shell)
{
const gchar *home_dir;
gchar *old_base_dir;
g_return_if_fail (E_IS_SHELL (shell));
/* XXX This blocks, but it's all just local file
* renames so it should be nearly instantaneous. */
home_dir = g_get_home_dir ();
old_base_dir = g_build_filename (home_dir, ".evolution", NULL);
/* Is there even anything to migrate? */
if (!g_file_test (old_base_dir, G_FILE_TEST_IS_DIR))
goto exit;
shell_xdg_migrate_cache_dir (shell, old_base_dir);
shell_xdg_migrate_config_dir (shell, old_base_dir);
shell_xdg_migrate_data_dir (shell, old_base_dir);
/* Try to remove the old base directory. Good chance this will
* fail on the first try, since Evolution puts stuff here too. */
g_rmdir (old_base_dir);
exit:
g_free (old_base_dir);
}
