/* -*- Mode: C; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
/* vim: set sw=2 ts=2 sts=2 et: */
/*
 *  Copyright © 2009 Xan López
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *
 *  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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/* Portions of this file based on Chromium code.
 * License block as follows:
 *
 * Copyright (c) 2009 The Chromium Authors. All rights reserved.
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 *
 * The LICENSE file from Chromium can be found in the LICENSE.chromium
 * file.
 */

#include "config.h"

#include "ephy-debug.h"
#include "ephy-file-helpers.h"
#include "ephy-form-auth-data.h"
#include "ephy-history-service.h"
#include "ephy-profile-utils.h"
#include "ephy-settings.h"
#include "ephy-sqlite-connection.h"
#include "ephy-uri-helpers.h"
#include "ephy-web-app-utils.h"

#include <fcntl.h>
#include <glib/gi18n.h>
#include <glib/gstdio.h>
#include <libsecret/secret.h>
#include <libsoup/soup.h>
#include <locale.h>
#include <sys/stat.h>
#include <sys/types.h>

static int do_step_n = -1;
static int migration_version = -1;
static char *profile_dir = NULL;
static GMainLoop *loop = NULL;

/*
 * What to do to add new migration steps:
 *  - Bump EPHY_PROFILE_MIGRATION_VERSION in lib/ephy-profile-utils.h
 *  - Add your function at the end of the 'migrators' array
 */

typedef void (*EphyProfileMigrator) (void);

static gboolean
profile_dir_exists (void)
{
  return g_file_test (ephy_dot_dir (), G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR);
}

static void
migrate_cookies (void)
{
  const char *cookies_file_sqlite = "cookies.sqlite";
  const char *cookies_file_txt = "cookies.txt";
  char *src_sqlite = NULL, *src_txt = NULL, *dest = NULL;

  dest = g_build_filename (ephy_dot_dir (), cookies_file_sqlite, NULL);
  /* If we already have a cookies.sqlite file, do nothing */
  if (g_file_test (dest, G_FILE_TEST_EXISTS))
    goto out;

  src_sqlite = g_build_filename (ephy_dot_dir (), "mozilla",
                                 "epiphany", cookies_file_sqlite, NULL);
  src_txt = g_build_filename (ephy_dot_dir (), "mozilla",
                              "epiphany", cookies_file_txt, NULL);

  /* First check if we have a cookies.sqlite file in Mozilla */
  if (g_file_test (src_sqlite, G_FILE_TEST_EXISTS)) {
    GFile *gsrc, *gdest;

    /* Copy the file */
    gsrc = g_file_new_for_path (src_sqlite);
    gdest = g_file_new_for_path (dest);

    if (!g_file_copy (gsrc, gdest, 0, NULL, NULL, NULL, NULL))
      g_warning (_("Failed to copy cookies file from Mozilla."));

    g_object_unref (gsrc);
    g_object_unref (gdest);
  } else if (g_file_test (src_txt, G_FILE_TEST_EXISTS)) {
    /* Create a SoupCookieJarSQLite with the contents of the txt file */
    GSList *cookies, *p;
    SoupCookieJar *txt, *sqlite;

    txt = soup_cookie_jar_text_new (src_txt, TRUE);
    sqlite = soup_cookie_jar_db_new (dest, FALSE);
    cookies = soup_cookie_jar_all_cookies (txt);

    for (p = cookies; p; p = p->next) {
      SoupCookie *cookie = (SoupCookie *)p->data;
      /* Cookie is stolen, so we won't free it */
      soup_cookie_jar_add_cookie (sqlite, cookie);
    }

    g_slist_free (cookies);
    g_object_unref (txt);
    g_object_unref (sqlite);
  }

 out:
  g_free (src_sqlite);
  g_free (src_txt);
  g_free (dest);
}

/* History migration */

static EphyHistoryService *history_service = NULL;
static gboolean all_done = FALSE;

typedef struct {
  char *title;
  char *location;
  char *current;
  long long int visit_count;
  long long int last_visit;
  long long int first_visit;
  double zoom_level;
  GList *visits;
} HistoryParseData;

static void
history_parse_start_element (GMarkupParseContext *context,
                             const char          *element_name,
                             const char         **attribute_names,
                             const char         **attribute_values,
                             gpointer             user_data,
                             GError             **error)
{
  HistoryParseData *parse_data = user_data;

  if (g_str_equal (element_name, "node") && parse_data) {
    /* Starting a new node, reset all values */
    g_free (parse_data->title);
    parse_data->title = NULL;

    g_free (parse_data->location);
    parse_data->location = NULL;

    parse_data->visit_count = 0;
    parse_data->last_visit = 0;
    parse_data->first_visit = 0;
    parse_data->zoom_level = 1.0;
  } else if (g_str_equal (element_name, "property")) {
    const char **name, **value;

    for (name = attribute_names, value = attribute_values; *name; name++, value++) {
      if (g_str_equal (*name, "id")) {
        parse_data->current = g_strdup (*value);
        break;
      }
    }
  }
}

static void
history_parse_text (GMarkupParseContext *context,
                    const char          *text,
                    gsize                text_len,
                    gpointer             user_data,
                    GError             **error)
{
  HistoryParseData *parse_data = user_data;

  if (!parse_data || !parse_data->current)
    return;

  if (g_str_equal (parse_data->current, "2")) {
    /* Title */
    parse_data->title = g_strndup (text, text_len);
  } else if (g_str_equal (parse_data->current, "3")) {
    /* Location */
    parse_data->location = g_strndup (text, text_len);
  } else if (g_str_equal (parse_data->current, "4")) {
    /* Visit count */
    GString *data = g_string_new_len (text, text_len);
    sscanf (data->str, "%lld", &parse_data->visit_count);
    g_string_free (data, TRUE);
  } else if (g_str_equal (parse_data->current, "5")) {
    /* Last visit */
    GString *data = g_string_new_len (text, text_len);
    sscanf (data->str, "%lld", &parse_data->last_visit);
    g_string_free (data, TRUE);
  } else if (g_str_equal (parse_data->current, "6")) {
    /* First visit */
    GString *data = g_string_new_len (text, text_len);
    sscanf (data->str, "%lld", &parse_data->first_visit);
    g_string_free (data, TRUE);
  } else if (g_str_equal (parse_data->current, "10")) {
    /* Zoom level. */
    GString *data = g_string_new_len (text, text_len);
    sscanf (data->str, "%lf", &parse_data->zoom_level);
    g_string_free (data, TRUE);
  }

  g_free (parse_data->current);
  parse_data->current = NULL;
}

static void
visit_cb (EphyHistoryService *service, gboolean success, gpointer result, gpointer user_data)
{
  all_done = TRUE;
}

static void
history_parse_end_element (GMarkupParseContext *context,
                           const char          *element_name,
                           gpointer             user_data,
                           GError             **error)
{
  HistoryParseData *parse_data = user_data;

  if (g_str_equal (element_name, "node") && parse_data) {
    /* Add one item to History */
    EphyHistoryPageVisit *visit = ephy_history_page_visit_new (parse_data->location ? parse_data->location : "",
                                                               parse_data->last_visit, EPHY_PAGE_VISIT_TYPED);
    g_free (visit->url->title);
    visit->url->title = g_strdup (parse_data->title);

    if (parse_data->zoom_level != 1.0) {
      /* Zoom levels are only stored per host in the old history, so
       * creating a new host here is OK. */
      g_assert (!visit->url->host);
      visit->url->host = ephy_history_host_new (parse_data->location, parse_data->title,
                                                parse_data->visit_count, parse_data->zoom_level);
    }

    parse_data->visits = g_list_append (parse_data->visits, visit);
  }
}

static GMarkupParser history_parse_funcs =
{
  history_parse_start_element,
  history_parse_end_element,
  history_parse_text,
  NULL,
  NULL,
};

static void
migrate_history (void)
{
  GFileInputStream *input;
  GMarkupParseContext *context;
  GError *error = NULL;
  GFile *file;
  char *filename;
  char buffer[1024];
  HistoryParseData parse_data;

  gchar *temporary_file = g_build_filename (ephy_dot_dir (), EPHY_HISTORY_FILE, NULL);
  /* Do nothing if the history file already exists. Safer than wiping
   * it out. */
  if (g_file_test (temporary_file, G_FILE_TEST_EXISTS)) {
    g_warning ("Did not migrate history, the %s file already exists", EPHY_HISTORY_FILE);
    g_free (temporary_file);
    return;
  }

  history_service = ephy_history_service_new (temporary_file, FALSE);
  g_free (temporary_file);

  memset (&parse_data, 0, sizeof (HistoryParseData));
  parse_data.location = NULL;
  parse_data.title = NULL;
  parse_data.visits = NULL;

  filename = g_build_filename (ephy_dot_dir (),
                               "ephy-history.xml",
                               NULL);

  file = g_file_new_for_path (filename);
  g_free (filename);

  input = g_file_read (file, NULL, &error);
  g_object_unref (file);

  if (error) {
    if (error->code != G_IO_ERROR_NOT_FOUND)
      g_warning ("Could not load history data, migration aborted: %s", error->message);

    g_error_free (error);
    return;
  }

  context = g_markup_parse_context_new (&history_parse_funcs, 0, &parse_data, NULL);
  while (TRUE) {
    gssize count = g_input_stream_read (G_INPUT_STREAM (input), buffer, sizeof (buffer), NULL, &error);
    if (count <= 0)
      break;

    if (!g_markup_parse_context_parse (context, buffer, count, &error))
      break;
  }

  g_markup_parse_context_free (context);
  g_input_stream_close (G_INPUT_STREAM (input), NULL, NULL);
  g_object_unref (input);

  if (parse_data.visits) {
    ephy_history_service_add_visits (history_service, parse_data.visits, NULL, (EphyHistoryJobCallback)visit_cb, NULL);
    ephy_history_page_visit_list_free (parse_data.visits);

    while (!all_done)
      g_main_context_iteration (NULL, FALSE);
  }

  g_object_unref (history_service);
}

static void
migrate_tabs_visibility (void)
{
  gboolean always_show_tabs;

  always_show_tabs = g_settings_get_boolean (EPHY_SETTINGS_UI,
                                             EPHY_PREFS_UI_ALWAYS_SHOW_TABS_BAR);

  if (always_show_tabs)
    g_settings_set_enum (EPHY_SETTINGS_UI,
                         EPHY_PREFS_UI_TABS_BAR_VISIBILITY_POLICY,
                         EPHY_PREFS_UI_TABS_BAR_VISIBILITY_POLICY_ALWAYS);
}

static void
migrate_profile (const char *old_dir,
                 const char *new_dir)
{
  char *parent_dir;
  char *updated;
  const char *message;

  if (g_file_test (new_dir, G_FILE_TEST_EXISTS) ||
      !g_file_test (old_dir, G_FILE_TEST_IS_DIR))
    return;

  /* Test if we already attempted to migrate first. */
  updated = g_build_filename (old_dir, "DEPRECATED-DIRECTORY", NULL);
  message = _("Web 3.6 deprecated this directory and tried migrating "
              "this configuration to ~/.config/epiphany");

  parent_dir = g_path_get_dirname (new_dir);
  if (g_mkdir_with_parents (parent_dir, 0700) == 0) {
    int fd, res;

    /* rename() works fine if the destination directory is empty. */
    res = g_rename (old_dir, new_dir);
    if (res == -1 && !g_file_test (updated, G_FILE_TEST_EXISTS)) {
      fd = g_creat (updated, 0600);
      if (fd != -1) {
        res = write (fd, message, strlen (message));
        close (fd);
      }
    }
  }

  g_free (parent_dir);
  g_free (updated);
}

static void
migrate_profile_gnome2_to_xdg (void)
{
  char *old_dir;
  char *new_dir;

  old_dir = g_build_filename (g_get_home_dir (),
                              ".gnome2",
                              "epiphany",
                              NULL);
  new_dir = g_build_filename (g_get_user_config_dir (),
                              "epiphany",
                              NULL);

  migrate_profile (old_dir, new_dir);

  g_free (new_dir);
  g_free (old_dir);
}

static char *
fix_desktop_file_and_return_new_location (const char *dir)
{
  GRegex *regex;
  char *result, *old_profile_dir, *replacement, *contents, *new_contents;
  gsize length;

  old_profile_dir = g_build_filename (g_get_home_dir (),
                                      ".gnome2",
                                      NULL);
  replacement = g_build_filename (g_get_user_config_dir (),
                                  NULL);
  regex = g_regex_new (old_profile_dir, 0, 0, NULL);

  /* We want to modify both the link destination and the contents of
   * the .desktop file itself. */
  result = g_regex_replace (regex, dir, -1,
                            0, replacement, 0, NULL);
  g_file_get_contents (result, &contents, &length, NULL);
  new_contents = g_regex_replace (regex, contents, -1, 0,
                                  replacement, 0, NULL);
  g_file_set_contents (result, new_contents, length, NULL);

  g_free (contents);
  g_free (new_contents);
  g_free (old_profile_dir);
  g_free (replacement);

  g_regex_unref (regex);

  return result;
}

static void
migrate_web_app_links (void)
{
  GList *apps, *p;

  apps = ephy_web_application_get_application_list ();
  for (p = apps; p; p = p->next) {
    char *desktop_file, *app_link;
    EphyWebApplication *app = (EphyWebApplication *)p->data;

    desktop_file = app->desktop_file;

    /* Update the link in applications. */
    app_link = g_build_filename (g_get_user_data_dir (), "applications", desktop_file, NULL);
    if (g_file_test (app_link, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_SYMLINK)) {
      /* Change the link to point to the new profile dir. */
      GFileInfo *info;
      const char *target;
      GFile *file = g_file_new_for_path (app_link);

      info = g_file_query_info (file, G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET,
                                0, NULL, NULL);
      if (info) {
        char *new_target;

        target = g_file_info_get_symlink_target (info);
        new_target = fix_desktop_file_and_return_new_location (target);

        /* FIXME: Updating the file info and setting it again should
         * work, but it does not? Just delete and create the link
         * again. */
        g_file_delete (file, 0, 0);
        g_object_unref (file);

        file = g_file_new_for_path (app_link);
        g_file_make_symbolic_link (file, new_target, NULL, NULL);

        g_object_unref (info);
        g_free (new_target);
      }

      g_object_unref (file);
    }

    g_free (app_link);
  }

  ephy_web_application_free_application_list (apps);
}

static void
migrate_new_urls_table (void)
{
  EphySQLiteConnection *history_database;
  char *filename;
  GError *error = NULL;

  filename = g_build_filename (ephy_dot_dir (), EPHY_HISTORY_FILE, NULL);
  history_database = ephy_sqlite_connection_new (EPHY_SQLITE_CONNECTION_MODE_READWRITE);
  ephy_sqlite_connection_open (history_database, filename, &error);

  if (error) {
    g_warning ("Failed to open history database: %s\n", error->message);
    g_error_free (error);
    g_free (filename);
    return;
  }

  ephy_sqlite_connection_execute (history_database,
                                  "ALTER TABLE urls "
                                  "ADD COLUMN thumbnail_update_time INTEGER DEFAULT 0",
                                  &error);
  if (error) {
    g_warning ("Failed to add new column to table in history backend: %s\n",
               error->message);
    g_error_free (error);
    error = NULL;
  }
  ephy_sqlite_connection_execute (history_database,
                                  "ALTER TABLE urls "
                                  "ADD COLUMN hidden_from_overview INTEGER DEFAULT 0",
                                  &error);
  if (error) {
    g_warning ("Failed to add new column to table in history backend: %s\n",
               error->message);
    g_error_free (error);
    error = NULL;
  }

  g_object_unref (history_database);
  g_free (filename);
}

/* Migrating form password data. */

static int form_passwords_migrating = 0;


static void
password_cleared_cb (SecretService *service,
                     GAsyncResult  *res,
                     gpointer       userdata)
{
  secret_service_clear_finish (service, res, NULL);

  if (g_atomic_int_dec_and_test (&form_passwords_migrating))
    g_main_loop_quit (loop);
}

static void
store_form_auth_data_cb (GObject      *object,
                         GAsyncResult *res,
                         GHashTable   *attributes)
{
  GError *error = NULL;

  if (ephy_form_auth_data_store_finish (res, &error) == FALSE) {
    g_warning ("Couldn't store a form password: %s", error->message);
    g_error_free (error);
    goto out;
  }

  g_atomic_int_inc (&form_passwords_migrating);
  secret_service_clear (NULL, NULL,
                        attributes, NULL, (GAsyncReadyCallback)password_cleared_cb,
                        NULL);

 out:
  if (g_atomic_int_dec_and_test (&form_passwords_migrating))
    g_main_loop_quit (loop);

  g_hash_table_unref (attributes);
}

static void
load_collection_items_cb (SecretCollection *collection,
                          GAsyncResult     *res,
                          gpointer          data)
{
  SecretItem *item;
  SecretValue *secret;
  GList *l;
  GHashTable *attributes, *t;
  const char *server, *username, *form_username, *form_password, *password;
  char *actual_server;
  SoupURI *uri;
  GError *error = NULL;
  GList *items;

  secret_collection_load_items_finish (collection, res, &error);

  if (error) {
    g_warning ("Couldn't retrieve form data: %s", error->message);
    g_error_free (error);
    return;
  }
  items = secret_collection_get_items (collection);

  for (l = items; l; l = l->next) {
    item = (SecretItem *)l->data;

    attributes = secret_item_get_attributes (item);
    server = g_hash_table_lookup (attributes, "server");
    if (server &&
        g_strstr_len (server, -1, "form%5Fusername") &&
        g_strstr_len (server, -1, "form%5Fpassword")) {
      g_atomic_int_inc (&form_passwords_migrating);
      /* This is one of the hackish ones that need to be migrated.
         Fetch the rest of the data and take care of it. */
      username = g_hash_table_lookup (attributes, "user");
      uri = soup_uri_new (server);
      t = soup_form_decode (uri->query);
      form_username = g_hash_table_lookup (t, FORM_USERNAME_KEY);
      form_password = g_hash_table_lookup (t, FORM_PASSWORD_KEY);
      soup_uri_set_query (uri, NULL);
      actual_server = soup_uri_to_string (uri, FALSE);
      secret_item_load_secret_sync (item, NULL, NULL);
      secret = secret_item_get_secret (item);
      password = secret_value_get (secret, NULL);
      ephy_form_auth_data_store (actual_server,
                                 form_username,
                                 form_password,
                                 username,
                                 password,
                                 (GAsyncReadyCallback)store_form_auth_data_cb,
                                 g_hash_table_ref (attributes));
      g_free (actual_server);
      secret_value_unref (secret);
      g_hash_table_unref (t);
      soup_uri_free (uri);
    }
    g_hash_table_unref (attributes);
  }

  /* And decrease here so that we finish eventually. */
  if (g_atomic_int_dec_and_test (&form_passwords_migrating))
    g_main_loop_quit (loop);

  g_list_free_full (items, (GDestroyNotify)g_object_unref);
}

static void
migrate_form_passwords_to_libsecret (void)
{
  SecretService *service;
  GList *collections, *c;
  GError *error = NULL;

  service = secret_service_get_sync (SECRET_SERVICE_OPEN_SESSION | SECRET_SERVICE_LOAD_COLLECTIONS, NULL, &error);
  if (error) {
    g_warning ("Could not get the secret service: %s", error->message);
    g_error_free (error);
    return;
  }

  collections = secret_service_get_collections (service);

  for (c = collections; c; c = c->next) {
    g_atomic_int_inc (&form_passwords_migrating);
    secret_collection_load_items ((SecretCollection *)c->data, NULL, (GAsyncReadyCallback)load_collection_items_cb,
                                  NULL);
  }

  loop = g_main_loop_new (NULL, FALSE);
  g_main_loop_run (loop);

  g_list_free_full (collections, (GDestroyNotify)g_object_unref);
  g_object_unref (service);
}

static void
migrate_app_desktop_file_categories (void)
{
  GList *web_apps, *l;

  web_apps = ephy_web_application_get_application_list ();

  for (l = web_apps; l; l = l->next) {
    EphyWebApplication *app = (EphyWebApplication *)l->data;
    GKeyFile *file;
    char *data = NULL;
    char *app_path;
    char *desktop_file_path;

    file = g_key_file_new ();

    app_path = ephy_web_application_get_profile_directory (app->name);
    desktop_file_path = g_build_filename (app_path, app->desktop_file, NULL);
    g_key_file_load_from_file (file, desktop_file_path, G_KEY_FILE_NONE, NULL);

    LOG ("migrate_app_desktop_file_categories: adding Categories to %s", app->name);
    g_key_file_set_value (file, "Desktop Entry", "Categories", "Network;GNOME;GTK;");

    data = g_key_file_to_data (file, NULL, NULL);
    g_file_set_contents (desktop_file_path, data, -1, NULL);

    g_free (app_path);
    g_free (desktop_file_path);
    g_free (data);
    g_key_file_free (file);
  }

  ephy_web_application_free_application_list (web_apps);
}

/* https://bugzilla.gnome.org/show_bug.cgi?id=752738 */
static void
migrate_insecure_password (SecretItem *item)
{
  GHashTable *attributes;
  SoupURI *soup_uri;
  const char *original_uri;

  attributes = secret_item_get_attributes (item);
  original_uri = g_hash_table_lookup (attributes, URI_KEY);
  soup_uri = soup_uri_new (original_uri);
  if (soup_uri == NULL) {
    g_warning ("Failed to convert URI %s to a SoupURI, insecure password will not be migrated", original_uri);
    g_hash_table_unref (attributes);
    return;
  }

  if (soup_uri->scheme == SOUP_URI_SCHEME_HTTP) {
    char *new_uri;
    GError *error = NULL;

    new_uri = ephy_uri_to_https_security_origin (original_uri);

    g_hash_table_replace (attributes, g_strdup (URI_KEY), new_uri);
    secret_item_set_attributes_sync (item, EPHY_FORM_PASSWORD_SCHEMA, attributes, NULL, &error);
    if (error != NULL) {
      g_warning ("Failed to convert URI %s to https://, insecure password will not be migrated: %s", original_uri, error->message);
      g_error_free (error);
    }
  }

  g_hash_table_unref (attributes);
  soup_uri_free (soup_uri);
}

static void
migrate_insecure_passwords (void)
{
  SecretService *service;
  GHashTable *attributes;
  GList *items;
  int default_profile_migration_version;
  GError *error = NULL;

  /* This is ephy *profile* migrator. It runs on a per-profile basis. i.e.
   * each web app runs migrators separately. So this migration step could run
   * once for a profile dir, then again far in the future when an old web app
   * is opened. But passwords are global state, not stored in the profile dir,
   * and we want to run this migration only once. This is tricky to fix, but
   * it's easier if we relax the constraint to "never run this migrator if it
   * has been run already for the default profile dir." That's because we don't
   * really care if a couple web app passwords get converted from insecure to
   * secure, which is not a big problem and indicates the user probably never
   * uses Epiphany except for web apps anyway. We just don't want all the user's
   * passwords to get converted mysteriously because he happens to open a web
   * app. So check the migration version for the default profile dir and abort
   * if this migrator has already run there. This way we avoid adding a new flag
   * file to clutter the profile dir just to check if this migrator has run.
   */
  default_profile_migration_version = ephy_profile_utils_get_migration_version_for_profile_dir (ephy_default_dot_dir ());
  if (default_profile_migration_version >= EPHY_INSECURE_PASSWORDS_MIGRATION_VERSION) {
    LOG ("Skipping insecure password migration because default profile has already migrated");
    return;
  }

  service = secret_service_get_sync (SECRET_SERVICE_LOAD_COLLECTIONS, NULL, &error);
  if (error != NULL) {
    g_warning ("Failed to get secret service proxy, insecure passwords will not be migrated: %s", error->message);
    g_error_free (error);
    return;
  }

  attributes = secret_attributes_build (EPHY_FORM_PASSWORD_SCHEMA, NULL);

  items = secret_service_search_sync (service,
                                      EPHY_FORM_PASSWORD_SCHEMA,
                                      attributes,
                                      SECRET_SEARCH_ALL | SECRET_SEARCH_UNLOCK | SECRET_SEARCH_LOAD_SECRETS,
                                      NULL,
                                      &error);
  if (error != NULL) {
    g_warning ("Failed to search secret service, insecure passwords will not be migrated: %s", error->message);
    g_error_free (error);
    goto out;
  }

  for (GList *l = items; l != NULL; l = l->next)
    migrate_insecure_password ((SecretItem *)l->data);

  g_list_free_full (items, g_object_unref);

out:
  g_object_unref (service);
  g_hash_table_unref (attributes);
}

static void
migrate_nothing (void)
{
  /* Used to replace migrators that have been removed. E.g. we used to have
   * three password migrators that depended on NSS, but supporting ancient
   * user profiles from almost a decade ago is not worth depending on NSS.
   *
   * Note that you cannot simply remove a migrator from the migrators struct,
   * as that would mess up tracking of which migrators have been run.
   */
}

const EphyProfileMigrator migrators[] = {
  migrate_cookies,
  migrate_nothing,
  migrate_nothing,
  migrate_nothing,
  migrate_history,
  migrate_tabs_visibility,
  migrate_web_app_links,
  migrate_new_urls_table,
  migrate_form_passwords_to_libsecret,
  migrate_app_desktop_file_categories,
  migrate_insecure_passwords,
};

static gboolean
ephy_migrator (void)
{
  int latest, i;
  EphyProfileMigrator m;

  /* Always try to migrate the data from the old profile dir at the
   * very beginning. */
  migrate_profile_gnome2_to_xdg ();

  /* If after this point there's no profile dir, there's no point in
   * running anything because Epiphany has never run in this sytem, so
   * exit here. */
  if (!profile_dir_exists ())
    return TRUE;

  if (do_step_n != -1) {
    if (do_step_n >= EPHY_PROFILE_MIGRATION_VERSION)
      return FALSE;

    LOG ("Running only migrator: %d", do_step_n);
    m = migrators[do_step_n];
    m ();

    return TRUE;
  }

  latest = ephy_profile_utils_get_migration_version ();

  LOG ("Running migrators up to version %d, current migration version is %d.",
       EPHY_PROFILE_MIGRATION_VERSION, latest);

  for (i = latest; i < EPHY_PROFILE_MIGRATION_VERSION; i++) {
    LOG ("Running migrator: %d of %d", i + 1, EPHY_PROFILE_MIGRATION_VERSION);

    /* No need to run the password migration twice in a row. It
       appears twice in the list for the benefit of people that were
       using the development snapshots, since an early version didn't
       migrate all passwords correctly. */
    if (i == 1)
      continue;

    m = migrators[i];
    m ();
  }

  if (ephy_profile_utils_set_migration_version (EPHY_PROFILE_MIGRATION_VERSION) != TRUE) {
    LOG ("Failed to store the current migration version");
    return FALSE;
  }

  return TRUE;
}

static const GOptionEntry option_entries[] =
{
  { "do-step", 'd', 0, G_OPTION_ARG_INT, &do_step_n,
    N_("Executes only the n-th migration step"), NULL },
  { "version", 'v', 0, G_OPTION_ARG_INT, &migration_version,
    N_("Specifies the required version for the migrator"), NULL },
  { "profile-dir", 'p', 0, G_OPTION_ARG_FILENAME, &profile_dir,
    N_("Specifies the profile where the migrator should run"), NULL },
  { NULL }
};

int
main (int argc, char *argv[])
{
  GOptionContext *option_context;
  GOptionGroup *option_group;
  GError *error = NULL;
  EphyFileHelpersFlags file_helpers_flags = EPHY_FILE_HELPERS_NONE;

  setlocale (LC_ALL, "");
  bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
  bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
  textdomain (GETTEXT_PACKAGE);

  option_group = g_option_group_new ("ephy-profile-migrator",
                                     N_("Web profile migrator"),
                                     N_("Web profile migrator options"),
                                     NULL, NULL);

  g_option_group_set_translation_domain (option_group, GETTEXT_PACKAGE);
  g_option_group_add_entries (option_group, option_entries);

  option_context = g_option_context_new ("");
  g_option_context_set_main_group (option_context, option_group);

  if (!g_option_context_parse (option_context, &argc, &argv, &error)) {
    g_print ("Failed to parse arguments: %s\n", error->message);
    g_error_free (error);
    g_option_context_free (option_context);

    return 1;
  }

  g_option_context_free (option_context);

  if (migration_version != -1 && migration_version != EPHY_PROFILE_MIGRATION_VERSION) {
    g_print ("Version mismatch, version %d requested but our version is %d\n",
             migration_version, EPHY_PROFILE_MIGRATION_VERSION);

    return 1;
  }

  ephy_debug_init ();

  if (profile_dir != NULL)
    file_helpers_flags = EPHY_FILE_HELPERS_PRIVATE_PROFILE |
                         EPHY_FILE_HELPERS_KEEP_DIR;

  if (!ephy_file_helpers_init (profile_dir, file_helpers_flags, NULL)) {
    LOG ("Something wrong happened with ephy_file_helpers_init()");
    return -1;
  }

  return ephy_migrator () ? 0 : 1;
}