2007-05-08 Murray Cumming <murrayc@murrayc.com>
[modest] / src / modest-tny-account-store.c
1 /* Copyright (c) 2006, Nokia Corporation
2  * All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are
6  * met:
7  *
8  * * Redistributions of source code must retain the above copyright
9  *   notice, this list of conditions and the following disclaimer.
10  * * Redistributions in binary form must reproduce the above copyright
11  *   notice, this list of conditions and the following disclaimer in the
12  *   documentation and/or other materials provided with the distribution.
13  * * Neither the name of the Nokia Corporation nor the names of its
14  *   contributors may be used to endorse or promote products derived from
15  *   this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
18  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
19  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
20  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
21  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
24  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
25  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
26  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  */
29
30 #include <string.h>
31 #include <glib/gi18n.h>
32
33 #include <tny-account.h>
34 #include <tny-account-store.h>
35 #include <tny-store-account.h>
36 #include <tny-error.h>
37 #include <tny-transport-account.h>
38 #include <tny-simple-list.h>
39 #include <tny-account-store.h>
40 #include <tny-camel-transport-account.h>
41 #include <tny-camel-imap-store-account.h>
42 #include <tny-camel-pop-store-account.h>
43
44 #include <modest-runtime.h>
45 #include <modest-marshal.h>
46 #include <modest-protocol-info.h>
47 #include <modest-local-folder-info.h>
48 #include <modest-tny-account.h>
49 #include <modest-account-mgr.h>
50 #include <modest-account-mgr-helpers.h>
51
52 #include "modest-tny-account-store.h"
53 #include "modest-tny-platform-factory.h"
54 #include <tny-gtk-lockable.h>
55 #include <camel/camel.h>
56
57 #ifdef MODEST_PLATFORM_MAEMO
58 #include <tny-maemo-conic-device.h>
59 #endif
60
61 /* 'private'/'protected' functions */
62 static void modest_tny_account_store_class_init   (ModestTnyAccountStoreClass *klass);
63 //static void modest_tny_account_store_init         (ModestTnyAccountStore *obj);
64 static void modest_tny_account_store_finalize     (GObject *obj);
65
66 /* implementations for tny-account-store-iface */
67 static void    modest_tny_account_store_instance_init (ModestTnyAccountStore *obj);
68 static void    modest_tny_account_store_init          (gpointer g, gpointer iface_data);
69
70
71 /* list my signals */
72 enum {
73         ACCOUNT_UPDATE_SIGNAL,
74         PASSWORD_REQUESTED_SIGNAL,
75         LAST_SIGNAL
76 };
77
78 typedef struct _ModestTnyAccountStorePrivate ModestTnyAccountStorePrivate;
79 struct _ModestTnyAccountStorePrivate {
80         gchar              *cache_dir;  
81         GHashTable         *password_hash;
82         ModestAccountMgr   *account_mgr;
83         TnySessionCamel    *session;
84         TnyDevice          *device;
85         
86         /* we cache them here */
87         GSList             *store_accounts;
88         GSList             *transport_accounts;
89 };
90
91 #define MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
92                                                       MODEST_TYPE_TNY_ACCOUNT_STORE, \
93                                                       ModestTnyAccountStorePrivate))
94
95 /* globals */
96 static GObjectClass *parent_class = NULL;
97
98 static guint signals[LAST_SIGNAL] = {0};
99
100 GType
101 modest_tny_account_store_get_type (void)
102 {
103         static GType my_type = 0;
104
105         if (!my_type) {
106                 static const GTypeInfo my_info = {
107                         sizeof(ModestTnyAccountStoreClass),
108                         NULL,           /* base init */
109                         NULL,           /* base finalize */
110                         (GClassInitFunc) modest_tny_account_store_class_init,
111                         NULL,           /* class finalize */
112                         NULL,           /* class data */
113                         sizeof(ModestTnyAccountStore),
114                         0,              /* n_preallocs */
115                         (GInstanceInitFunc) modest_tny_account_store_instance_init,
116                         NULL
117                 };
118
119                 static const GInterfaceInfo iface_info = {
120                         (GInterfaceInitFunc) modest_tny_account_store_init,
121                         NULL,         /* interface_finalize */
122                         NULL          /* interface_data */
123                 };
124                 /* hack hack */
125                 my_type = g_type_register_static (G_TYPE_OBJECT,
126                                                   "ModestTnyAccountStore",
127                                                   &my_info, 0);
128                 g_type_add_interface_static (my_type, TNY_TYPE_ACCOUNT_STORE,
129                                              &iface_info);
130         }
131         return my_type;
132 }
133
134 static void
135 modest_tny_account_store_class_init (ModestTnyAccountStoreClass *klass)
136 {
137         GObjectClass *gobject_class;
138         gobject_class = (GObjectClass*) klass;
139
140         parent_class            = g_type_class_peek_parent (klass);
141         gobject_class->finalize = modest_tny_account_store_finalize;
142
143         g_type_class_add_private (gobject_class,
144                                   sizeof(ModestTnyAccountStorePrivate));
145
146          signals[ACCOUNT_UPDATE_SIGNAL] =
147                 g_signal_new ("account_update",
148                               G_TYPE_FROM_CLASS (gobject_class),
149                               G_SIGNAL_RUN_FIRST,
150                               G_STRUCT_OFFSET(ModestTnyAccountStoreClass, account_update),
151                               NULL, NULL,
152                               g_cclosure_marshal_VOID__STRING,
153                               G_TYPE_NONE, 1, G_TYPE_STRING);
154          
155          signals[PASSWORD_REQUESTED_SIGNAL] =
156                  g_signal_new ("password_requested",
157                                G_TYPE_FROM_CLASS (gobject_class),
158                                G_SIGNAL_RUN_FIRST,
159                                G_STRUCT_OFFSET(ModestTnyAccountStoreClass, password_requested),
160                                NULL, NULL,
161                                modest_marshal_VOID__STRING_POINTER_POINTER_POINTER_POINTER,
162                                G_TYPE_NONE, 5, G_TYPE_STRING, G_TYPE_POINTER, G_TYPE_POINTER, G_TYPE_POINTER,
163                                G_TYPE_POINTER);
164 }
165
166
167 static void
168 modest_tny_account_store_instance_init (ModestTnyAccountStore *obj)
169 {
170         ModestTnyAccountStorePrivate *priv =
171                 MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(obj);
172
173         priv->cache_dir              = NULL;
174         priv->account_mgr            = NULL;
175         priv->session                = NULL;
176         priv->device                 = NULL;
177         
178         priv->password_hash          = g_hash_table_new_full (g_str_hash, g_str_equal,
179                                                               g_free, g_free);
180 }
181
182
183
184 static void
185 account_list_free (GSList *accounts)
186 {
187         GSList *cursor = accounts;
188
189         while (cursor) {
190                 if (G_IS_OBJECT(cursor->data)) { /* check twice... */
191                         const gchar *id = tny_account_get_id(TNY_ACCOUNT(cursor->data));
192                         modest_runtime_verify_object_last_ref(cursor->data,id);
193                 }                       
194                 g_object_unref (G_OBJECT(cursor->data));
195                 cursor = cursor->next;
196         }
197         g_slist_free (accounts);
198 }
199
200
201 static void
202 on_account_removed (ModestAccountMgr *acc_mgr, const gchar *account, gboolean server_account,
203                     gpointer user_data)
204 {
205         ModestTnyAccountStore *self        = MODEST_TNY_ACCOUNT_STORE(user_data);
206         ModestTnyAccountStorePrivate *priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
207
208         /* FIXME: make this more finegrained; changes do not really affect _all_
209          * accounts, and some do not affect tny accounts at all (such as 'last_update')
210          */
211         
212         
213         account_list_free (priv->store_accounts);
214         priv->store_accounts = NULL;
215         
216         account_list_free (priv->transport_accounts);
217         priv->transport_accounts = NULL;
218         
219         g_signal_emit (G_OBJECT(self), signals[ACCOUNT_UPDATE_SIGNAL], 0,
220                        account);
221 }
222
223
224 static void
225 on_account_changed (ModestAccountMgr *acc_mgr, const gchar *account, gboolean server_account,
226                     const gchar *key, gpointer user_data)
227 {
228         ModestTnyAccountStore *self = MODEST_TNY_ACCOUNT_STORE(user_data);
229         ModestTnyAccountStorePrivate *priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
230         
231         /* FIXME: make this more finegrained; changes do not really affect _all_
232          * accounts, and some do not affect tny accounts at all (such as 'last_update')
233          */
234         if (priv->store_accounts) {
235                 account_list_free (priv->store_accounts);
236                 priv->store_accounts = NULL;
237         }
238         
239         if (priv->transport_accounts) {
240                 account_list_free (priv->transport_accounts);
241                 priv->transport_accounts = NULL;
242         }
243
244         g_signal_emit (G_OBJECT(self), signals[ACCOUNT_UPDATE_SIGNAL], 0,
245                        account);
246 }
247
248
249 static ModestTnyAccountStore*
250 get_account_store_for_account (TnyAccount *account)
251 {
252         return MODEST_TNY_ACCOUNT_STORE(g_object_get_data (G_OBJECT(account),
253                                                            "account_store"));
254 }
255
256 /* This callback will be called by Tinymail when it needs the password.
257  * Note that TnyAccount here will be the server account. */
258 static gchar*
259 get_password (TnyAccount *account, const gchar *prompt, gboolean *cancel)
260 {
261         const gchar *key;
262         const TnyAccountStore *account_store;
263         ModestTnyAccountStore *self;
264         ModestTnyAccountStorePrivate *priv;
265         gchar *username = NULL;
266         gchar *pwd = NULL;
267         gpointer pwd_ptr;
268         gboolean already_asked;
269         
270         key           = tny_account_get_id (account);
271         account_store = TNY_ACCOUNT_STORE(get_account_store_for_account (account));
272         
273         self = MODEST_TNY_ACCOUNT_STORE (account_store);
274         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
275         
276         /* TODO: What is this hash for? */
277         /* is it in the hash? if it's already there, it must be wrong... */
278         pwd_ptr = (gpointer)&pwd; /* pwd_ptr so the compiler does not complained about
279                                    * type-punned ptrs...*/
280         already_asked = g_hash_table_lookup_extended (priv->password_hash,
281                                                       key,
282                                                       NULL,
283                                                       (gpointer*)&pwd_ptr);
284
285         /* if the password is not already there, try ModestConf */
286         if (!already_asked) {
287                 pwd  = modest_account_mgr_get_string (priv->account_mgr,
288                                                       key, MODEST_ACCOUNT_PASSWORD, TRUE);
289                 g_hash_table_insert (priv->password_hash, g_strdup (key), g_strdup (pwd));
290         }
291
292         /* if it was already asked, it must have been wrong, so ask again */
293         if (already_asked || !pwd || strlen(pwd) == 0) {
294                 /* we don't have it yet. Get the password from the user */
295                 const gchar* account_id = tny_account_get_id (account);
296                 gboolean remember = FALSE;
297                 pwd = NULL;
298                 
299                 /* Note that we ignore the returned username here,
300                  * because it is enough that it will be stored in gconf 
301                  * by the signal handler. */
302                 g_signal_emit (G_OBJECT(self), signals[PASSWORD_REQUESTED_SIGNAL], 0,
303                                account_id, /* server_account_name */
304                                &username, &pwd, cancel, &remember);
305                 
306                 if (!*cancel) {
307                         if (remember)
308                                 modest_account_mgr_set_string (priv->account_mgr,key,
309                                                                MODEST_ACCOUNT_PASSWORD,
310                                                                pwd, TRUE);
311                         /* We need to dup the string even knowing that
312                            it's already a dup of the contents of an
313                            entry, because it if it's wrong, then camel
314                            will free it */
315                         g_hash_table_insert (priv->password_hash, g_strdup (key), g_strdup(pwd));
316                 } else {
317                         g_hash_table_remove (priv->password_hash, key);
318                 }
319
320                 g_free (username);
321                 username = NULL;
322                 
323                 g_free (pwd);
324                 pwd = NULL;
325                         
326         } else
327                 *cancel = FALSE;
328  
329     /* printf("  DEBUG: %s: returning %s\n", __FUNCTION__, pwd); */
330         
331         return pwd;
332 }
333
334
335 static void
336 forget_password (TnyAccount *account)
337 {
338         ModestTnyAccountStore *self;
339         ModestTnyAccountStorePrivate *priv;
340         const TnyAccountStore *account_store;
341         gchar *pwd;
342         const gchar *key;
343         
344         account_store = TNY_ACCOUNT_STORE(get_account_store_for_account (account));
345         self = MODEST_TNY_ACCOUNT_STORE (account_store);
346         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
347         key  = tny_account_get_id (account);
348
349         /* Do not remove the key, this will allow us to detect that we
350            have already asked for it at least once */
351         pwd = g_hash_table_lookup (priv->password_hash, key);
352         if (pwd) {
353                 memset (pwd, 0, strlen (pwd));
354                 g_hash_table_insert (priv->password_hash, g_strdup (key), NULL);
355         }
356
357         /* Remove from configuration system */
358         modest_account_mgr_unset (priv->account_mgr,
359                                   key, MODEST_ACCOUNT_PASSWORD, TRUE);
360 }
361
362
363 static void
364 modest_tny_account_store_finalize (GObject *obj)
365 {
366         ModestTnyAccountStore *self        = MODEST_TNY_ACCOUNT_STORE(obj);
367         ModestTnyAccountStorePrivate *priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
368         
369         //gboolean debug = modest_runtime_get_debug_flags() & MODEST_RUNTIME_DEBUG_DEBUG_OBJECTS;
370
371         g_free (priv->cache_dir);
372         priv->cache_dir = NULL;
373         
374         if (priv->password_hash) {
375                 g_hash_table_destroy (priv->password_hash);
376                 priv->password_hash = NULL;
377         }
378
379         if (priv->account_mgr) {
380                 g_object_unref (G_OBJECT(priv->account_mgr));
381                 priv->account_mgr = NULL;
382         }
383
384         if (priv->device) {
385                 g_object_unref (G_OBJECT(priv->device));
386                 priv->device = NULL;
387         }
388
389         /* this includes the local folder */
390         account_list_free (priv->store_accounts);
391         priv->store_accounts = NULL;
392         
393         account_list_free (priv->transport_accounts);
394         priv->transport_accounts = NULL;
395
396         if (priv->session) {
397                 camel_object_unref (CAMEL_OBJECT(priv->session));
398                 priv->session = NULL;
399         }
400         
401         G_OBJECT_CLASS(parent_class)->finalize (obj);
402 }
403
404
405 ModestTnyAccountStore*
406 modest_tny_account_store_new (ModestAccountMgr *account_mgr, TnyDevice *device) {
407
408         GObject *obj;
409         ModestTnyAccountStorePrivate *priv;
410         TnyList *list; 
411         
412         g_return_val_if_fail (account_mgr, NULL);
413         g_return_val_if_fail (device, NULL);
414
415         obj  = G_OBJECT(g_object_new(MODEST_TYPE_TNY_ACCOUNT_STORE, NULL));
416         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(obj);
417
418         priv->account_mgr = g_object_ref (G_OBJECT(account_mgr));
419         priv->device = g_object_ref (device);
420         
421         priv->session = tny_session_camel_new (TNY_ACCOUNT_STORE(obj));
422         
423         tny_session_camel_set_ui_locker (priv->session,  tny_gtk_lockable_new ());
424         /* FIXME: unref this in the end? */
425         tny_session_camel_set_async_connecting (priv->session, TRUE);
426         
427         /* force a cache fill... ugly */
428         list = TNY_LIST(tny_simple_list_new());
429         tny_account_store_get_accounts (TNY_ACCOUNT_STORE(obj), list,
430                                         TNY_ACCOUNT_STORE_BOTH);
431         g_object_unref(list);
432         
433         /* Connect signals */
434         g_signal_connect (G_OBJECT(account_mgr), "account_changed",
435                                        G_CALLBACK (on_account_changed), obj);
436         g_signal_connect (G_OBJECT(account_mgr), "account_removed",
437                                        G_CALLBACK (on_account_removed), obj);
438
439         return MODEST_TNY_ACCOUNT_STORE(obj);
440 }
441
442
443 static void
444 get_cached_accounts (TnyAccountStore *self, TnyList *list, TnyAccountType type)
445 {
446         ModestTnyAccountStorePrivate *priv;
447         GSList                       *accounts, *cursor;
448         
449         priv     = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
450         accounts = (type == TNY_ACCOUNT_TYPE_STORE ? priv->store_accounts : priv->transport_accounts);
451
452         cursor = accounts;
453         while (cursor) {
454                 tny_list_prepend (list, G_OBJECT(cursor->data));
455                 cursor = cursor->next;
456         }
457 }
458
459
460
461 /* this function fills the TnyList, and also returns a GSList of the accounts,
462  * for caching purposes
463  */
464 static GSList*
465 get_accounts  (TnyAccountStore *self, TnyList *list, TnyAccountType type)
466 {
467         ModestTnyAccountStorePrivate *priv = NULL;
468         GSList                       *account_names = NULL, *cursor = NULL;
469         GSList                       *accounts = NULL;
470         
471         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
472  
473         account_names = modest_account_mgr_account_names (priv->account_mgr, 
474                 TRUE /* including disabled accounts */);
475         
476         for (cursor = account_names; cursor; cursor = cursor->next) {
477                 
478                 gchar *account_name = (gchar*)cursor->data;
479                 
480                 /* only return enabled accounts */
481                 if (modest_account_mgr_get_enabled(priv->account_mgr, account_name)) {
482                         TnyAccount *tny_account = 
483                                 modest_tny_account_new_from_account (priv->account_mgr,
484                                                                      account_name,
485                                                                      type, priv->session,
486                                                                      get_password,
487                                                                      forget_password);
488                         if (tny_account) {
489                                 g_object_set_data (G_OBJECT(tny_account), "account_store",
490                                                    (gpointer)self);
491                                 tny_list_prepend (list, G_OBJECT(tny_account));
492                                 accounts = g_slist_append (accounts, tny_account); /* cache it */
493                         } else
494                                 g_printerr ("modest: failed to create account for %s\n",
495                                             account_name);
496                 }
497                 g_free (account_name);
498         }
499         g_slist_free (account_names);
500
501         /* also, add the local folder pseudo-account */
502         if (type == TNY_ACCOUNT_TYPE_STORE) {
503                 TnyAccount *tny_account =
504                         modest_tny_account_new_for_local_folders (priv->account_mgr, priv->session);
505                 tny_list_prepend (list, G_OBJECT(tny_account));
506                 accounts = g_slist_append (accounts, tny_account); /* cache it */
507         }       
508         return accounts;
509 }       
510
511
512 static void
513 modest_tny_account_store_get_accounts  (TnyAccountStore *self, TnyList *list,
514                                         TnyGetAccountsRequestType request_type)
515 {
516         ModestTnyAccountStorePrivate *priv;
517         
518         g_return_if_fail (self);
519         g_return_if_fail (TNY_IS_LIST(list));
520         
521         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
522         
523         if (request_type == TNY_ACCOUNT_STORE_BOTH) {
524                 modest_tny_account_store_get_accounts (self, list,
525                                                        TNY_ACCOUNT_STORE_STORE_ACCOUNTS);
526                 modest_tny_account_store_get_accounts (self, list,
527                                                        TNY_ACCOUNT_STORE_TRANSPORT_ACCOUNTS);
528                 return;
529         }
530         
531         if (request_type == TNY_ACCOUNT_STORE_STORE_ACCOUNTS)  {
532                 
533                 if (!priv->store_accounts)
534                         priv->store_accounts = get_accounts (self, list, TNY_ACCOUNT_TYPE_STORE);
535                 else
536                         get_cached_accounts (self, list, TNY_ACCOUNT_TYPE_STORE);
537
538         } else if (request_type == TNY_ACCOUNT_STORE_TRANSPORT_ACCOUNTS) {
539
540                 if (!priv->transport_accounts)
541                         priv->transport_accounts =
542                                 get_accounts (self, list, TNY_ACCOUNT_TYPE_TRANSPORT);
543                 else
544                         get_cached_accounts (self, list, TNY_ACCOUNT_TYPE_TRANSPORT);
545         } else
546                 g_return_if_reached (); /* incorrect req type */
547 }
548
549
550 static const gchar*
551 modest_tny_account_store_get_cache_dir (TnyAccountStore *self)
552 {
553         ModestTnyAccountStorePrivate *priv;
554         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
555         
556         if (!priv->cache_dir)
557                 priv->cache_dir = g_build_filename (g_get_home_dir(), 
558                                                     MODEST_DIR, MODEST_CACHE_DIR, NULL);
559         return priv->cache_dir;
560 }
561
562
563 /*
564  * callers need to unref
565  */
566 static TnyDevice*
567 modest_tny_account_store_get_device (TnyAccountStore *self)
568 {
569         ModestTnyAccountStorePrivate *priv;
570
571         g_return_val_if_fail (self, NULL);
572         
573         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
574
575         if (priv->device)
576                 return g_object_ref (G_OBJECT(priv->device));
577         else
578                 return NULL;
579 }
580
581
582 static TnyAccount*
583 modest_tny_account_store_find_account_by_url (TnyAccountStore *self, const gchar* url_string)
584 {
585         TnyAccount *account = NULL;
586         ModestTnyAccountStorePrivate *priv;     
587         GSList *cursor;
588         
589         g_return_val_if_fail (self, NULL);
590         g_return_val_if_fail (url_string, NULL);
591         
592         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
593
594         for (cursor = priv->store_accounts; cursor ; cursor = cursor->next) {
595                 if (tny_account_matches_url_string (TNY_ACCOUNT(cursor->data), url_string)) {
596                         account = TNY_ACCOUNT(cursor->data);
597                         break;
598                 }
599         }
600
601         if (!account) {
602                 for (cursor = priv->transport_accounts; !account && cursor ; cursor = cursor->next) {
603                         if (tny_account_matches_url_string (TNY_ACCOUNT(cursor->data), url_string)) {
604                                 account = TNY_ACCOUNT(cursor->data);
605                                 break;
606                         }
607                 }
608         }
609
610         if (account)
611                 g_object_ref (G_OBJECT(account));
612
613         return account;
614 }
615
616
617
618 static gboolean
619 modest_tny_account_store_alert (TnyAccountStore *self, TnyAlertType type,
620                                 const GError *error)
621 {
622         g_return_val_if_fail (error, FALSE);
623         g_return_val_if_fail (error->domain == TNY_ACCOUNT_ERROR, FALSE);
624         
625         /* printf("DEBUG: %s: error->message=%s\n", __FUNCTION__, error->message); */
626         
627         GtkMessageType gtktype;
628         gboolean retval = FALSE;
629         GtkWidget *dialog;
630
631         switch (type)
632         {
633                 case TNY_ALERT_TYPE_INFO:
634                 gtktype = GTK_MESSAGE_INFO;
635                 break;
636                 case TNY_ALERT_TYPE_WARNING:
637                 gtktype = GTK_MESSAGE_WARNING;
638                 break;
639                 case TNY_ALERT_TYPE_ERROR:
640                 default:
641                 gtktype = GTK_MESSAGE_ERROR;
642                 break;
643         }
644         
645         const gchar *prompt = NULL;
646         switch (error->code)
647         {
648                 case TNY_ACCOUNT_ERROR_TRY_CONNECT:
649                         prompt = _("Modest account not yet fully configured");
650                         break;
651                 default:
652                         g_warning ("%s: Unhandled GError code.", __FUNCTION__);
653                         prompt = NULL;
654                 break;
655         }
656         
657         if (!prompt)
658                 return FALSE;
659
660         dialog = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL,
661                 gtktype, GTK_BUTTONS_YES_NO, prompt);
662
663         if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_YES)
664                 retval = TRUE;
665
666         gtk_widget_destroy (dialog);
667
668         return retval;
669 }
670
671
672 static void
673 modest_tny_account_store_init (gpointer g, gpointer iface_data)
674 {
675         TnyAccountStoreIface *klass;
676
677         g_return_if_fail (g);
678
679         klass = (TnyAccountStoreIface *)g;
680
681         klass->get_accounts_func =
682                 modest_tny_account_store_get_accounts;
683         klass->get_cache_dir_func =
684                 modest_tny_account_store_get_cache_dir;
685         klass->get_device_func =
686                 modest_tny_account_store_get_device;
687         klass->alert_func =
688                 modest_tny_account_store_alert;
689         klass->find_account_func =
690                 modest_tny_account_store_find_account_by_url;
691 }
692
693 void
694 modest_tny_account_store_set_get_pass_func (ModestTnyAccountStore *self,
695                                             ModestTnyGetPassFunc func)
696 {
697         /* not implemented, we use signals */
698         g_printerr ("modest: set_get_pass_func not implemented\n");
699 }
700
701 TnySessionCamel*
702 tny_account_store_get_session  (TnyAccountStore *self)
703 {
704         g_return_val_if_fail (self, NULL);
705         return MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE (self)->session;
706 }
707
708
709 TnyAccount*
710 modest_tny_account_store_get_tny_account_by_id  (ModestTnyAccountStore *self, const gchar *id)
711 {
712         TnyAccount *account = NULL;
713         ModestTnyAccountStorePrivate *priv;     
714         GSList *cursor;
715
716         g_return_val_if_fail (self, NULL);
717         g_return_val_if_fail (id, NULL);
718         
719         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
720
721         for (cursor = priv->store_accounts; cursor ; cursor = cursor->next) {
722                 const gchar *acc_id = tny_account_get_id (TNY_ACCOUNT(cursor->data));
723                 if (acc_id && strcmp (acc_id, id) == 0) { 
724                         account = TNY_ACCOUNT(cursor->data);
725                         break;
726                 }
727         }
728
729         /* if we already found something, no need to search the transport accounts */
730         for (cursor = priv->transport_accounts; !account && cursor ; cursor = cursor->next) {
731                 const gchar *acc_id = tny_account_get_id (TNY_ACCOUNT(cursor->data));
732                 if (acc_id && strcmp (acc_id, id) == 0) {
733                         account = TNY_ACCOUNT(cursor->data);
734                         break;
735                 }
736         }
737
738         if (account)
739                 g_object_ref (G_OBJECT(account));
740         
741         return account;
742 }
743
744 TnyAccount*
745 modest_tny_account_store_get_tny_account_by_account (ModestTnyAccountStore *self,
746                                                      const gchar *account_name,
747                                                      TnyAccountType type)
748 {
749         TnyAccount *account = NULL;
750         ModestAccountData *account_data;
751         const gchar *id = NULL;
752         ModestTnyAccountStorePrivate *priv;     
753
754         g_return_val_if_fail (self, NULL);
755         g_return_val_if_fail (account_name, NULL);
756         g_return_val_if_fail (type == TNY_ACCOUNT_TYPE_STORE || type == TNY_ACCOUNT_TYPE_TRANSPORT,
757                               NULL);
758         
759         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
760         
761         account_data = modest_account_mgr_get_account_data (priv->account_mgr, account_name);
762         if (!account_data) {
763                 g_printerr ("modest: cannot get account data for account '%s'\n", account_name);
764                 return NULL;
765         }
766
767         if (type == TNY_ACCOUNT_TYPE_STORE && account_data->store_account)
768                 id = account_data->store_account->account_name;
769         else if (account_data->transport_account)
770                 id = account_data->transport_account->account_name;
771
772         if (!id)
773                 g_printerr ("modest: could not get an id for account %s\n",
774                             account_name);
775         else    
776                 account = modest_tny_account_store_get_tny_account_by_id (self, id);
777
778         if (!account)
779                 g_printerr ("modest: could not get tny %s account for %s (id=%s)\n",
780                             type == TNY_ACCOUNT_TYPE_STORE? "store" : "transport",
781                             account_name, id ? id : "<none>");
782
783         modest_account_mgr_free_account_data (priv->account_mgr, account_data);
784         return account; 
785 }
786
787 static TnyAccount* get_smtp_specific_transport_account_for_open_connection (ModestTnyAccountStore *self, const gchar *account_name)
788 {
789         /* Get the current connection: */
790         TnyDevice *device = modest_runtime_get_device ();
791         
792         if (!tny_device_is_online (device))
793                 return NULL;
794
795 #ifdef MODEST_PLATFORM_MAEMO
796         g_assert (TNY_IS_MAEMO_CONIC_DEVICE (device));
797         TnyMaemoConicDevice *maemo_device = TNY_MAEMO_CONIC_DEVICE (device);    
798         const gchar* iap_id = tny_maemo_conic_device_get_current_iap_id (maemo_device);
799         if (!iap_id)
800                 return NULL;
801                 
802         ConIcIap* connection = tny_maemo_conic_device_get_iap (maemo_device, iap_id);
803         if (!connection)
804                 return NULL;
805                 
806         const gchar *connection_name = con_ic_iap_get_name (connection);
807         if (!connection_name)
808                 return NULL;
809         
810         /*  Get the connection-specific transport acccount, if any: */
811         ModestAccountMgr *account_manager = modest_runtime_get_account_mgr ();
812         gchar* server_account_name = modest_account_mgr_get_connection_specific_smtp (account_manager, 
813                 account_name, connection_name);
814                 
815         if (!server_account_name)
816                 return NULL; /* No connection-specific SMTP server was specified for this connection. */
817                 
818         TnyAccount* account = modest_tny_account_store_get_tny_account_by_id (self, server_account_name);
819         g_free (server_account_name);   
820
821         /* Unref the get()ed object, as required by the tny_maemo_conic_device_get_iap() documentation. */
822         g_object_unref (connection);
823         
824         return account;
825 #else
826         return NULL; /* TODO: Implement this for GNOME, instead of just Maemo? */
827 #endif /* MODEST_PLATFORM_MAEMO */
828 }
829
830                                                                  
831 TnyAccount* modest_tny_account_store_get_transport_account_for_open_connection (ModestTnyAccountStore *self,
832                                                                  const gchar *account_name)
833 {
834         /*  Get the connection-specific transport acccount, if any: */
835         TnyAccount *account = get_smtp_specific_transport_account_for_open_connection (self, account_name);
836                         
837         /* If there is no connection-specific transport account (the common case), 
838          * just get the regular transport account: */
839         if (!account) {         
840                 account = modest_tny_account_store_get_tny_account_by_account (self, account_name, 
841                                                      TNY_ACCOUNT_TYPE_TRANSPORT);
842         }
843                              
844         return account;
845 }