684 lines
17 KiB
C
684 lines
17 KiB
C
#include "e.h"
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#ifdef HAVE_PAM
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# include <security/pam_appl.h>
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# include <pwd.h>
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# include <limits.h>
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#endif
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#define ELOCK_POPUP_LAYER 10000
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#define PASSWD_LEN 256
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/**************************** private data ******************************/
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typedef struct _E_Desklock_Data E_Desklock_Data;
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typedef struct _E_Desklock_Popup_Data E_Desklock_Popup_Data;
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#ifdef HAVE_PAM
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typedef struct _E_Desklock_Auth E_Desklock_Auth;
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#endif
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struct _E_Desklock_Popup_Data
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{
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E_Popup *popup_wnd;
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Evas_Object *bg_object;
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Evas_Object *login_box;
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};
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struct _E_Desklock_Data
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{
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Evas_List *elock_wnd_list;
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Ecore_X_Window elock_wnd;
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Evas_List *handlers;
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Ecore_X_Window elock_grab_break_wnd;
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char passwd[PASSWD_LEN];
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};
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#ifdef HAVE_PAM
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struct _E_Desklock_Auth
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{
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struct {
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struct pam_conv conv;
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pam_handle_t *handle;
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} pam;
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char user[PATH_MAX];
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char passwd[PATH_MAX];
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};
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#endif
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static E_Desklock_Data *edd = NULL;
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static E_Zone *last_active_zone = NULL;
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#ifdef HAVE_PAM
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static Ecore_Event_Handler *_e_desklock_exit_handler = NULL;
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static pid_t _e_desklock_child_pid = -1;
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#endif
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/***********************************************************************/
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static int _e_desklock_cb_key_down(void *data, int type, void *event);
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static int _e_desklock_cb_mouse_down(void *data, int type, void *event);
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static int _e_desklock_cb_mouse_up(void *data, int type, void *event);
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static int _e_desklock_cb_mouse_wheel(void *data, int type, void *event);
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static int _e_desklock_cb_mouse_move(void *data, int type, void *event);
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static void _e_desklock_passwd_update();
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static void _e_desklock_backspace();
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static void _e_desklock_delete();
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static int _e_desklock_zone_num_get();
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static int _e_desklock_check_auth();
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#ifdef HAVE_PAM
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static int _e_desklock_cb_exit(void *data, int type, void *event);
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static int _desklock_auth(const char *passwd);
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static int _desklock_pam_init(E_Desklock_Auth *da);
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static int _desklock_auth_pam_conv(int num_msg, const struct pam_message **msg, struct pam_response **resp, void *appdata_ptr);
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static char *_desklock_auth_get_current_user(void);
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static char *_desklock_auth_get_current_host(void);
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#endif
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EAPI int
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e_desklock_init(void)
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{
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if (e_config->desklock_disable_screensaver)
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ecore_x_screensaver_timeout_set(0);
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else
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{
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if (e_config->desklock_use_timeout)
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ecore_x_screensaver_timeout_set(e_config->desklock_timeout);
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}
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return 1;
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}
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EAPI int
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e_desklock_shutdown(void)
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{
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e_desklock_hide();
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return 1;
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}
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EAPI int
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e_desklock_show(void)
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{
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Evas_List *managers, *l, *l2, *l3;
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E_Desklock_Popup_Data *edp;
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Evas_Coord mw, mh;
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E_Zone *current_zone;
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int zone_counter;
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int total_zone_num;
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if (edd) return 0;
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#ifdef HAVE_PAM
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if (e_config->desklock_auth_method == 1)
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{
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#endif
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if (!e_config->desklock_personal_passwd)
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{
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E_Zone *zone;
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zone = e_util_zone_current_get(e_manager_current_get());
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if (zone)
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{
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E_Config_Dialog *cfd;
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cfd = e_int_config_desklock(zone->container);
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}
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return 0;
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}
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#ifdef HAVE_PAM
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}
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#endif
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edd = E_NEW(E_Desklock_Data, 1);
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if (!edd) return 0;
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edd->elock_wnd = ecore_x_window_input_new(e_manager_current_get()->root,
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0, 0, 1, 1);
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ecore_x_window_show(edd->elock_wnd);
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managers = e_manager_list();
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if (!e_grabinput_get(edd->elock_wnd, 0, edd->elock_wnd))
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{
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for (l = managers; l; l = l->next)
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{
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E_Manager *man;
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Ecore_X_Window *windows;
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int wnum;
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man = l->data;
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windows = ecore_x_window_children_get(man->root, &wnum);
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if (windows)
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{
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int i;
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for (i = 0; i < wnum; i++)
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{
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Ecore_X_Window_Attributes att;
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memset(&att, 0, sizeof(Ecore_X_Window_Attributes));
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ecore_x_window_attributes_get(windows[i], &att);
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if (att.visible)
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{
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ecore_x_window_hide(windows[i]);
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if (e_grabinput_get(edd->elock_wnd, 0, edd->elock_wnd))
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{
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edd->elock_grab_break_wnd = windows[i];
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free(windows);
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goto works;
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}
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ecore_x_window_show(windows[i]);
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}
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}
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free(windows);
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}
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}
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/* everything failed - cant lock */
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e_util_dialog_show(_("Lock Failed"),
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_("Locking the desktop failed because some application<br>"
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"has grabbed either the keyboard or the mouse or both<br>"
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"and their grab is unable to be broken."));
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ecore_x_window_del(edd->elock_wnd);
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free(edd);
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edd = NULL;
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return 0;
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}
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works:
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last_active_zone = current_zone =
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e_zone_current_get(e_container_current_get(e_manager_current_get()));
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zone_counter = 0;
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total_zone_num = _e_desklock_zone_num_get();
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for (l = managers; l; l = l->next)
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{
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E_Manager *man;
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man = l->data;
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for (l2 = man->containers; l2; l2 = l2->next)
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{
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E_Container *con;
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con = l2->data;
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for (l3 = con->zones; l3; l3 = l3->next)
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{
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E_Zone *zone;
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zone = l3->data;
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edp = E_NEW(E_Desklock_Popup_Data, 1);
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if (edp)
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{
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edp->popup_wnd = e_popup_new(zone, 0, 0, zone->w, zone->h);
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evas_event_feed_mouse_move(edp->popup_wnd->evas, -1000000, -1000000,
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ecore_x_current_time_get(), NULL);
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e_popup_layer_set(edp->popup_wnd, ELOCK_POPUP_LAYER);
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ecore_evas_raise(edp->popup_wnd->ecore_evas);
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evas_event_freeze(edp->popup_wnd->evas);
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edp->bg_object = edje_object_add(edp->popup_wnd->evas);
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if ((!e_config->desklock_background) ||
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(!strcmp(e_config->desklock_background, "theme_desklock_background")))
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{
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e_theme_edje_object_set(edp->bg_object,
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"base/theme/desklock",
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"desklock/background");
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}
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else if (!strcmp(e_config->desklock_background, "theme_background"))
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{
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e_theme_edje_object_set(edp->bg_object,
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"base/theme/backgrounds",
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"desktop/background");
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}
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else
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{
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if (e_util_edje_collection_exists(e_config->desklock_background,
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"desklock/background"))
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{
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edje_object_file_set(edp->bg_object, e_config->desklock_background,
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"desklock/background");
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}
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else
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{
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if (!edje_object_file_set(edp->bg_object,
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e_config->desklock_background,
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"desktop/background"))
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{
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edje_object_file_set(edp->bg_object,
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e_theme_edje_file_get("base/theme/desklock",
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"desklock/background"),
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"desklock/background");
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}
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}
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}
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evas_object_move(edp->bg_object, 0, 0);
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evas_object_resize(edp->bg_object, zone->w, zone->h);
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evas_object_show(edp->bg_object);
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edp->login_box = edje_object_add(edp->popup_wnd->evas);
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e_theme_edje_object_set(edp->login_box,
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"base/theme/desklock",
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"desklock/login_box");
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edje_object_part_text_set(edp->login_box, "title",
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_("Please enter your unlock password"));
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edje_object_part_swallow(edp->bg_object, "login_box", edp->login_box);
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edje_object_size_min_calc(edp->login_box, &mw, &mh);
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evas_object_move(edp->login_box, (int)((zone->w - mw)/2),
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(int)((zone->h - mh)/2));
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if (total_zone_num > 1)
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{
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if (e_config->desklock_login_box_zone == -1)
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evas_object_show(edp->login_box);
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else if(e_config->desklock_login_box_zone == -2 && zone == current_zone)
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evas_object_show(edp->login_box);
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else if(e_config->desklock_login_box_zone == zone_counter )
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evas_object_show(edp->login_box);
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}
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else
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evas_object_show(edp->login_box);
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/**/
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e_popup_edje_bg_object_set(edp->popup_wnd, edp->bg_object);
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evas_event_thaw(edp->popup_wnd->evas);
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e_popup_show(edp->popup_wnd);
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edd->elock_wnd_list = evas_list_append(edd->elock_wnd_list, edp);
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}
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zone_counter ++;
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}
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}
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}
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/* handlers */
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edd->handlers = evas_list_append(edd->handlers,
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ecore_event_handler_add(ECORE_X_EVENT_KEY_DOWN,
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_e_desklock_cb_key_down, NULL));
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edd->handlers = evas_list_append(edd->handlers,
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ecore_event_handler_add(ECORE_X_EVENT_MOUSE_BUTTON_DOWN,
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_e_desklock_cb_mouse_down, NULL));
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edd->handlers = evas_list_append(edd->handlers,
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ecore_event_handler_add(ECORE_X_EVENT_MOUSE_BUTTON_UP,
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_e_desklock_cb_mouse_up, NULL));
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edd->handlers = evas_list_append(edd->handlers,
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ecore_event_handler_add(ECORE_X_EVENT_MOUSE_WHEEL,
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_e_desklock_cb_mouse_wheel,
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NULL));
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if (total_zone_num > 1 && e_config->desklock_login_box_zone == -2 )
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edd->handlers = evas_list_append(edd->handlers,
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ecore_event_handler_add(ECORE_X_EVENT_MOUSE_MOVE,
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_e_desklock_cb_mouse_move,
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NULL));
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_e_desklock_passwd_update();
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return 1;
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}
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EAPI void
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e_desklock_hide(void)
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{
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E_Desklock_Popup_Data *edp;
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if (!edd) return;
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if (edd->elock_grab_break_wnd)
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ecore_x_window_show(edd->elock_grab_break_wnd);
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while (edd->elock_wnd_list)
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{
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edp = edd->elock_wnd_list->data;
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if (edp)
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{
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e_popup_hide(edp->popup_wnd);
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evas_event_freeze(edp->popup_wnd->evas);
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evas_object_del(edp->bg_object);
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evas_object_del(edp->login_box);
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evas_event_thaw(edp->popup_wnd->evas);
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e_object_del(E_OBJECT(edp->popup_wnd));
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E_FREE(edp);
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}
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edd->elock_wnd_list = evas_list_remove_list(edd->elock_wnd_list, edd->elock_wnd_list);
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}
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while (edd->handlers)
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{
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ecore_event_handler_del(edd->handlers->data);
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edd->handlers = evas_list_remove_list(edd->handlers, edd->handlers);
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}
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e_grabinput_release(edd->elock_wnd, edd->elock_wnd);
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ecore_x_window_del(edd->elock_wnd);
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E_FREE(edd);
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edd = NULL;
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}
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static int
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_e_desklock_cb_key_down(void *data, int type, void *event)
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{
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Ecore_X_Event_Key_Down *ev;
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ev = event;
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if (ev->win != edd->elock_wnd) return 1;
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if (!strcmp(ev->keysymbol, "Escape"))
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;
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else if (!strcmp(ev->keysymbol, "KP_Enter"))
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_e_desklock_check_auth();
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else if (!strcmp(ev->keysymbol, "Return"))
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_e_desklock_check_auth();
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else if (!strcmp(ev->keysymbol, "BackSpace"))
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_e_desklock_backspace();
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else if (!strcmp(ev->keysymbol, "Delete"))
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_e_desklock_delete();
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else
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{
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// here we have to grab a password
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if (ev->key_compose)
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{
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if ((strlen(edd->passwd) < (PASSWD_LEN - strlen(ev->key_compose))))
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{
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strcat(edd->passwd, ev->key_compose);
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_e_desklock_passwd_update();
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}
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}
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}
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return 1;
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}
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static int
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_e_desklock_cb_mouse_down(void *data, int type, void *event)
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{
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return 1;
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}
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static int
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_e_desklock_cb_mouse_up(void *data, int type, void *event)
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{
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return 1;
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}
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static int
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_e_desklock_cb_mouse_wheel(void *data, int type, void *event)
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{
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return 1;
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}
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static int
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_e_desklock_cb_mouse_move(void *data, int type, void *event)
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{
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E_Desklock_Popup_Data *edp;
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E_Zone *current_zone;
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Evas_List *l;
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current_zone = e_zone_current_get(e_container_current_get(e_manager_current_get()));
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if (current_zone == last_active_zone)
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return 1;
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for (l = edd->elock_wnd_list; l; l = l->next)
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{
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edp = l->data;
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if (!edp) continue;
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if (edp->popup_wnd->zone == last_active_zone)
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evas_object_hide(edp->login_box);
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else if (edp->popup_wnd->zone == current_zone)
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evas_object_show(edp->login_box);
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}
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last_active_zone = current_zone;
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return 1;
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}
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static void
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_e_desklock_passwd_update()
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{
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int ii;
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char passwd_hidden[PASSWD_LEN * 3]="";
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E_Desklock_Popup_Data *edp;
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Evas_List *l;
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if (!edd) return;
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for (ii = 0; ii < strlen(edd->passwd); ii ++)
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{
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passwd_hidden[ii] = '*';
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passwd_hidden[ii+1] = 0;
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}
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for (l = edd->elock_wnd_list; l; l = l->next)
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{
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edp = l->data;
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edje_object_part_text_set(edp->login_box, "passwd", passwd_hidden);
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}
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}
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static void
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_e_desklock_backspace()
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{
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int len, val, pos;
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if (!edd) return;
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len = strlen(edd->passwd);
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if (len > 0)
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{
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pos = evas_string_char_prev_get(edd->passwd, len, &val);
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if ((pos < len) && (pos >= 0))
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{
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edd->passwd[pos] = 0;
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_e_desklock_passwd_update();
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}
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}
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}
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static void
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_e_desklock_delete()
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{
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_e_desklock_backspace();
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}
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static int
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_e_desklock_zone_num_get()
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{
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int num;
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Evas_List *l, *l2;
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num = 0;
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for (l = e_manager_list(); l; l = l->next)
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{
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E_Manager *man = l->data;
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for (l2 = man->containers; l2; l2 = l2->next)
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{
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E_Container *con = l2->data;
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num += evas_list_count(con->zones);
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}
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}
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return num;
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}
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static int
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_e_desklock_check_auth()
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{
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|
if (!edd) return 0;
|
|
#ifdef HAVE_PAM
|
|
if (e_config->desklock_auth_method == 0)
|
|
return _desklock_auth(edd->passwd);
|
|
else if (e_config->desklock_auth_method == 1)
|
|
{
|
|
#endif
|
|
if ((e_config->desklock_personal_passwd) &&
|
|
(!strcmp(edd->passwd == NULL ? "" : edd->passwd,
|
|
e_config->desklock_personal_passwd == NULL ? "" :
|
|
e_config->desklock_personal_passwd)))
|
|
{
|
|
/* password ok */
|
|
memset(edd->passwd, 0, sizeof(char) * PASSWD_LEN);
|
|
e_desklock_hide();
|
|
return 1;
|
|
}
|
|
#ifdef HAVE_PAM
|
|
}
|
|
#endif
|
|
/* passowrd is definitely wrong */
|
|
memset(edd->passwd, 0, sizeof(char) * PASSWD_LEN);
|
|
_e_desklock_passwd_update();
|
|
return 0;
|
|
}
|
|
|
|
#ifdef HAVE_PAM
|
|
static int
|
|
_e_desklock_cb_exit(void *data, int type, void *event)
|
|
{
|
|
Ecore_Exe_Event_Del *ev;
|
|
|
|
ev = event;
|
|
if (ev->pid == _e_desklock_child_pid)
|
|
{
|
|
_e_desklock_child_pid = -1;
|
|
/* ok */
|
|
if (ev->exit_code == 0)
|
|
{
|
|
memset(edd->passwd, 0, sizeof(char) * PASSWD_LEN);
|
|
e_desklock_hide();
|
|
}
|
|
/* error */
|
|
else if (ev->exit_code < 128)
|
|
{
|
|
memset(edd->passwd, 0, sizeof(char) * PASSWD_LEN);
|
|
e_desklock_hide();
|
|
e_util_dialog_show(_("Authentication System Error"),
|
|
_("Authentication via PAM had errors setting up the<br>"
|
|
"authentication session. The error code was <hilight>%i</hilight>.<br>"
|
|
"This is bad and should not be happening. Please report this bug.")
|
|
, ev->exit_code);
|
|
}
|
|
/* failed auth */
|
|
else
|
|
{
|
|
memset(edd->passwd, 0, sizeof(char) * PASSWD_LEN);
|
|
_e_desklock_passwd_update();
|
|
}
|
|
ecore_event_handler_del(_e_desklock_exit_handler);
|
|
_e_desklock_exit_handler = NULL;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
_desklock_auth(const char *passwd)
|
|
{
|
|
if ((_e_desklock_child_pid = fork()))
|
|
{
|
|
/* parent */
|
|
_e_desklock_exit_handler =
|
|
ecore_event_handler_add(ECORE_EXE_EVENT_DEL, _e_desklock_cb_exit,
|
|
NULL);
|
|
}
|
|
else
|
|
{
|
|
/* child */
|
|
int pamerr;
|
|
E_Desklock_Auth da;
|
|
|
|
strncpy(da.user, _desklock_auth_get_current_user(), PATH_MAX);
|
|
strncpy(da.passwd, passwd, PATH_MAX);
|
|
da.pam.handle = NULL;
|
|
da.pam.conv.conv = NULL;
|
|
da.pam.conv.appdata_ptr = NULL;
|
|
|
|
pamerr = _desklock_pam_init(&da);
|
|
if (pamerr != PAM_SUCCESS) exit(pamerr);
|
|
pamerr = pam_authenticate(da.pam.handle, 0);
|
|
pam_end(da.pam.handle, pamerr);
|
|
memset(da.passwd, 0, sizeof(da.passwd));
|
|
if (pamerr == PAM_SUCCESS) exit(0);
|
|
exit(-1);
|
|
}
|
|
}
|
|
|
|
static char *
|
|
_desklock_auth_get_current_user(void)
|
|
{
|
|
char *user;
|
|
struct passwd *pwent = NULL;
|
|
|
|
pwent = getpwuid(getuid());
|
|
user = strdup(pwent->pw_name);
|
|
return user;
|
|
}
|
|
|
|
static int
|
|
_desklock_pam_init(E_Desklock_Auth *da)
|
|
{
|
|
int pamerr;
|
|
|
|
if (!da) return -1;
|
|
|
|
da->pam.conv.conv = _desklock_auth_pam_conv;
|
|
da->pam.conv.appdata_ptr = da;
|
|
da->pam.handle = NULL;
|
|
|
|
if ((pamerr = pam_start("system-auth", da->user, &(da->pam.conv),
|
|
&(da->pam.handle))) != PAM_SUCCESS)
|
|
return pamerr;
|
|
|
|
if ((pamerr = pam_set_item(da->pam.handle, PAM_USER,
|
|
_desklock_auth_get_current_user())) != PAM_SUCCESS)
|
|
return pamerr;
|
|
|
|
if ((pamerr = pam_set_item(da->pam.handle, PAM_RHOST,
|
|
_desklock_auth_get_current_host())) != PAM_SUCCESS)
|
|
return pamerr;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
_desklock_auth_pam_conv(int num_msg, const struct pam_message **msg, struct pam_response **resp, void *appdata_ptr)
|
|
{
|
|
int replies = 0;
|
|
E_Desklock_Auth *da = (E_Desklock_Auth *)appdata_ptr;
|
|
struct pam_response *reply = NULL;
|
|
|
|
reply = (struct pam_response *)malloc(sizeof(struct pam_response) *num_msg);
|
|
|
|
if (!reply)
|
|
return PAM_CONV_ERR;
|
|
|
|
for (replies = 0; replies < num_msg; replies++)
|
|
{
|
|
switch (msg[replies]->msg_style)
|
|
{
|
|
case PAM_PROMPT_ECHO_ON:
|
|
reply[replies].resp_retcode = PAM_SUCCESS;
|
|
reply[replies].resp = (char *)strdup(da->user);
|
|
break;
|
|
case PAM_PROMPT_ECHO_OFF:
|
|
reply[replies].resp_retcode = PAM_SUCCESS;
|
|
reply[replies].resp = (char *)strdup(da->passwd);
|
|
break;
|
|
case PAM_ERROR_MSG:
|
|
case PAM_TEXT_INFO:
|
|
reply[replies].resp_retcode = PAM_SUCCESS;
|
|
reply[replies].resp = NULL;
|
|
break;
|
|
default:
|
|
free(reply);
|
|
return PAM_CONV_ERR;
|
|
}
|
|
}
|
|
*resp = reply;
|
|
return PAM_SUCCESS;
|
|
}
|
|
|
|
static char *
|
|
_desklock_auth_get_current_host(void)
|
|
{
|
|
return strdup("localhost");
|
|
}
|
|
#endif
|