2007-05-21 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 #ifdef MODEST_HILDON_VERSION_0
60 #include <hildon-widgets/hildon-note.h>
61 #else
62 #include <hildon/hildon-note.h>
63 #endif
64 #endif
65
66 /* 'private'/'protected' functions */
67 static void modest_tny_account_store_class_init   (ModestTnyAccountStoreClass *klass);
68 //static void modest_tny_account_store_init         (ModestTnyAccountStore *obj);
69 static void modest_tny_account_store_finalize     (GObject *obj);
70
71 /* implementations for tny-account-store-iface */
72 static void    modest_tny_account_store_instance_init (ModestTnyAccountStore *obj);
73 static void    modest_tny_account_store_init          (gpointer g, gpointer iface_data);
74
75
76 static GSList*
77 get_server_accounts  (TnyAccountStore *self, TnyList *list, TnyAccountType type);
78
79
80 /* list my signals */
81 enum {
82         ACCOUNT_UPDATE_SIGNAL,
83         PASSWORD_REQUESTED_SIGNAL,
84         LAST_SIGNAL
85 };
86
87 typedef struct _ModestTnyAccountStorePrivate ModestTnyAccountStorePrivate;
88 struct _ModestTnyAccountStorePrivate {
89         gchar              *cache_dir;  
90         GHashTable         *password_hash;
91         ModestAccountMgr   *account_mgr;
92         TnySessionCamel    *session;
93         TnyDevice          *device;
94         
95         /* we cache them here */
96         GSList             *store_accounts;
97         GSList             *transport_accounts;
98 };
99
100 #define MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(o)      (G_TYPE_INSTANCE_GET_PRIVATE((o), \
101                                                       MODEST_TYPE_TNY_ACCOUNT_STORE, \
102                                                       ModestTnyAccountStorePrivate))
103
104 /* globals */
105 static GObjectClass *parent_class = NULL;
106
107 static guint signals[LAST_SIGNAL] = {0};
108
109 GType
110 modest_tny_account_store_get_type (void)
111 {
112         static GType my_type = 0;
113
114         if (!my_type) {
115                 static const GTypeInfo my_info = {
116                         sizeof(ModestTnyAccountStoreClass),
117                         NULL,           /* base init */
118                         NULL,           /* base finalize */
119                         (GClassInitFunc) modest_tny_account_store_class_init,
120                         NULL,           /* class finalize */
121                         NULL,           /* class data */
122                         sizeof(ModestTnyAccountStore),
123                         0,              /* n_preallocs */
124                         (GInstanceInitFunc) modest_tny_account_store_instance_init,
125                         NULL
126                 };
127
128                 static const GInterfaceInfo iface_info = {
129                         (GInterfaceInitFunc) modest_tny_account_store_init,
130                         NULL,         /* interface_finalize */
131                         NULL          /* interface_data */
132                 };
133                 /* hack hack */
134                 my_type = g_type_register_static (G_TYPE_OBJECT,
135                                                   "ModestTnyAccountStore",
136                                                   &my_info, 0);
137                 g_type_add_interface_static (my_type, TNY_TYPE_ACCOUNT_STORE,
138                                              &iface_info);
139         }
140         return my_type;
141 }
142
143 static void
144 modest_tny_account_store_class_init (ModestTnyAccountStoreClass *klass)
145 {
146         GObjectClass *gobject_class;
147         gobject_class = (GObjectClass*) klass;
148
149         parent_class            = g_type_class_peek_parent (klass);
150         gobject_class->finalize = modest_tny_account_store_finalize;
151
152         g_type_class_add_private (gobject_class,
153                                   sizeof(ModestTnyAccountStorePrivate));
154
155          signals[ACCOUNT_UPDATE_SIGNAL] =
156                 g_signal_new ("account_update",
157                               G_TYPE_FROM_CLASS (gobject_class),
158                               G_SIGNAL_RUN_FIRST,
159                               G_STRUCT_OFFSET(ModestTnyAccountStoreClass, account_update),
160                               NULL, NULL,
161                               g_cclosure_marshal_VOID__STRING,
162                               G_TYPE_NONE, 1, G_TYPE_STRING);
163          
164          signals[PASSWORD_REQUESTED_SIGNAL] =
165                  g_signal_new ("password_requested",
166                                G_TYPE_FROM_CLASS (gobject_class),
167                                G_SIGNAL_RUN_FIRST,
168                                G_STRUCT_OFFSET(ModestTnyAccountStoreClass, password_requested),
169                                NULL, NULL,
170                                modest_marshal_VOID__STRING_POINTER_POINTER_POINTER_POINTER,
171                                G_TYPE_NONE, 5, G_TYPE_STRING, G_TYPE_POINTER, G_TYPE_POINTER, G_TYPE_POINTER,
172                                G_TYPE_POINTER);
173 }
174
175
176 static void
177 modest_tny_account_store_instance_init (ModestTnyAccountStore *obj)
178 {
179         ModestTnyAccountStorePrivate *priv =
180                 MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(obj);
181
182         priv->cache_dir              = NULL;
183         priv->account_mgr            = NULL;
184         priv->session                = NULL;
185         priv->device                 = NULL;
186         
187         /* An in-memory store of passwords, 
188          * for passwords that are not remembered in the configuration,
189          * so they need to be asked for from the user once in each session:
190          */
191         priv->password_hash          = g_hash_table_new_full (g_str_hash, g_str_equal,
192                                                               g_free, g_free);
193 }
194
195
196
197 static void
198 account_list_free (GSList *accounts)
199 {
200         GSList *cursor = accounts;
201
202         while (cursor) {
203                 if (G_IS_OBJECT(cursor->data)) { /* check twice... */
204                         const gchar *id = tny_account_get_id(TNY_ACCOUNT(cursor->data));
205                         modest_runtime_verify_object_last_ref(cursor->data,id);
206                 }                       
207                 g_object_unref (G_OBJECT(cursor->data));
208                 cursor = cursor->next;
209         }
210         g_slist_free (accounts);
211 }
212
213
214 static void
215 on_account_removed (ModestAccountMgr *acc_mgr, const gchar *account, gboolean server_account,
216                     gpointer user_data)
217 {
218         ModestTnyAccountStore *self        = MODEST_TNY_ACCOUNT_STORE(user_data);
219         ModestTnyAccountStorePrivate *priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
220
221         /* FIXME: make this more finegrained; changes do not really affect _all_
222          * accounts, and some do not affect tny accounts at all (such as 'last_update')
223          */
224         
225         account_list_free (priv->store_accounts);
226         priv->store_accounts = get_server_accounts (TNY_ACCOUNT_STORE(self), NULL, TNY_ACCOUNT_TYPE_STORE);
227         
228         account_list_free (priv->transport_accounts);
229         priv->transport_accounts = get_server_accounts (TNY_ACCOUNT_STORE(self), NULL,
230                                                         TNY_ACCOUNT_TYPE_TRANSPORT);
231                 
232         g_signal_emit (G_OBJECT(self), signals[ACCOUNT_UPDATE_SIGNAL], 0,
233                        account);
234 }
235
236
237 static void
238 on_account_changed (ModestAccountMgr *acc_mgr, const gchar *account,
239                     const gchar *key, gboolean server_account, gpointer user_data)
240
241 {
242         ModestTnyAccountStore *self = MODEST_TNY_ACCOUNT_STORE(user_data);
243         ModestTnyAccountStorePrivate *priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
244         
245         /* FIXME: make this more finegrained; changes do not really affect _all_
246          * accounts, and some do not affect tny accounts at all (such as 'last_update')
247          */
248         if (server_account) {
249                 if (priv->store_accounts) {
250                         account_list_free (priv->store_accounts);
251                         priv->store_accounts =
252                                 get_server_accounts (TNY_ACCOUNT_STORE(self),
253                                                      NULL, TNY_ACCOUNT_TYPE_STORE);
254                 }
255                 
256                 if (priv->transport_accounts) {
257                         account_list_free (priv->transport_accounts);
258                         priv->transport_accounts =
259                                 get_server_accounts (TNY_ACCOUNT_STORE(self), NULL,
260                                                      TNY_ACCOUNT_TYPE_TRANSPORT);
261                 }
262         }
263
264         g_signal_emit (G_OBJECT(self), signals[ACCOUNT_UPDATE_SIGNAL], 0,
265                        account);
266 }
267
268
269 static ModestTnyAccountStore*
270 get_account_store_for_account (TnyAccount *account)
271 {
272         return MODEST_TNY_ACCOUNT_STORE(g_object_get_data (G_OBJECT(account),
273                                                            "account_store"));
274 }
275
276 /* This callback will be called by Tinymail when it needs the password
277  * from the user, for instance if the password was not remembered.
278  * Note that TnyAccount here will be the server account. */
279 static gchar*
280 get_password (TnyAccount *account, const gchar *prompt, gboolean *cancel)
281 {
282         const gchar *key;
283         const TnyAccountStore *account_store;
284         ModestTnyAccountStore *self;
285         ModestTnyAccountStorePrivate *priv;
286         gchar *username = NULL;
287         gchar *pwd = NULL;
288         gpointer pwd_ptr;
289         gboolean already_asked;
290         
291         key           = tny_account_get_id (account);
292         account_store = TNY_ACCOUNT_STORE(get_account_store_for_account (account));
293         
294         self = MODEST_TNY_ACCOUNT_STORE (account_store);
295         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
296         
297         /* This hash map stores passwords, including passwords that are not stored in gconf. */
298         /* is it in the hash? if it's already there, it must be wrong... */
299         pwd_ptr = (gpointer)&pwd; /* pwd_ptr so the compiler does not complained about
300                                    * type-punned ptrs...*/
301         already_asked = g_hash_table_lookup_extended (priv->password_hash,
302                                                       key,
303                                                       NULL,
304                                                       (gpointer*)&pwd_ptr);
305
306         /* if the password is not already there, try ModestConf */
307         if (!already_asked) {
308                 pwd  = modest_account_mgr_get_string (priv->account_mgr,
309                                                       key, MODEST_ACCOUNT_PASSWORD, TRUE);
310                 g_hash_table_insert (priv->password_hash, g_strdup (key), g_strdup (pwd));
311         }
312
313         /* if it was already asked, it must have been wrong, so ask again */
314         if (already_asked || !pwd || strlen(pwd) == 0) {
315                 /* we don't have it yet. Get the password from the user */
316                 const gchar* account_id = tny_account_get_id (account);
317                 gboolean remember = FALSE;
318                 pwd = NULL;
319                 
320                 /* Note that we ignore the returned username here,
321                  * because it is enough that it will be stored in gconf 
322                  * by the signal handler. */
323                 g_signal_emit (G_OBJECT(self), signals[PASSWORD_REQUESTED_SIGNAL], 0,
324                                account_id, /* server_account_name */
325                                &username, &pwd, cancel, &remember);
326                 
327                 if (!*cancel) {
328                         if (remember)
329                                 modest_account_mgr_set_string (priv->account_mgr,key,
330                                                                MODEST_ACCOUNT_PASSWORD,
331                                                                pwd, TRUE);
332                         /* We need to dup the string even knowing that
333                            it's already a dup of the contents of an
334                            entry, because it if it's wrong, then camel
335                            will free it */
336                         g_hash_table_insert (priv->password_hash, g_strdup (key), g_strdup(pwd));
337                 } else {
338                         g_hash_table_remove (priv->password_hash, key);
339                         
340                         g_free (pwd);
341                         pwd = NULL;
342                 }
343
344                 g_free (username);
345                 username = NULL;
346         } else
347                 *cancel = FALSE;
348  
349     /* printf("  DEBUG: %s: returning %s\n", __FUNCTION__, pwd); */
350         
351         return pwd;
352 }
353
354
355 static void
356 forget_password (TnyAccount *account)
357 {
358         ModestTnyAccountStore *self;
359         ModestTnyAccountStorePrivate *priv;
360         const TnyAccountStore *account_store;
361         gchar *pwd;
362         const gchar *key;
363         
364         account_store = TNY_ACCOUNT_STORE(get_account_store_for_account (account));
365         self = MODEST_TNY_ACCOUNT_STORE (account_store);
366         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
367         key  = tny_account_get_id (account);
368
369         /* Do not remove the key, this will allow us to detect that we
370            have already asked for it at least once */
371         pwd = g_hash_table_lookup (priv->password_hash, key);
372         if (pwd) {
373                 memset (pwd, 0, strlen (pwd));
374                 g_hash_table_insert (priv->password_hash, g_strdup (key), NULL);
375         }
376
377         /* Remove from configuration system */
378         modest_account_mgr_unset (priv->account_mgr,
379                                   key, MODEST_ACCOUNT_PASSWORD, TRUE);
380 }
381
382
383 static void
384 modest_tny_account_store_finalize (GObject *obj)
385 {
386         ModestTnyAccountStore *self        = MODEST_TNY_ACCOUNT_STORE(obj);
387         ModestTnyAccountStorePrivate *priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
388         
389         //gboolean debug = modest_runtime_get_debug_flags() & MODEST_RUNTIME_DEBUG_DEBUG_OBJECTS;
390
391         g_free (priv->cache_dir);
392         priv->cache_dir = NULL;
393         
394         if (priv->password_hash) {
395                 g_hash_table_destroy (priv->password_hash);
396                 priv->password_hash = NULL;
397         }
398
399         if (priv->account_mgr) {
400                 g_object_unref (G_OBJECT(priv->account_mgr));
401                 priv->account_mgr = NULL;
402         }
403
404         if (priv->device) {
405                 g_object_unref (G_OBJECT(priv->device));
406                 priv->device = NULL;
407         }
408
409         /* this includes the local folder */
410         account_list_free (priv->store_accounts);
411         priv->store_accounts = NULL;
412         
413         account_list_free (priv->transport_accounts);
414         priv->transport_accounts = NULL;
415
416         if (priv->session) {
417                 camel_object_unref (CAMEL_OBJECT(priv->session));
418                 priv->session = NULL;
419         }
420         
421         G_OBJECT_CLASS(parent_class)->finalize (obj);
422 }
423
424
425 ModestTnyAccountStore*
426 modest_tny_account_store_new (ModestAccountMgr *account_mgr, TnyDevice *device) {
427
428         GObject *obj;
429         ModestTnyAccountStorePrivate *priv;
430         TnyList *list; 
431         
432         g_return_val_if_fail (account_mgr, NULL);
433         g_return_val_if_fail (device, NULL);
434
435         obj  = G_OBJECT(g_object_new(MODEST_TYPE_TNY_ACCOUNT_STORE, NULL));
436         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(obj);
437
438         priv->account_mgr = g_object_ref (G_OBJECT(account_mgr));
439         priv->device = g_object_ref (device);
440         
441         priv->session = tny_session_camel_new (TNY_ACCOUNT_STORE(obj));
442         
443         tny_session_camel_set_ui_locker (priv->session,  tny_gtk_lockable_new ());
444         /* FIXME: unref this in the end? */
445         tny_session_camel_set_async_connecting (priv->session, TRUE);
446         
447         /* force a cache fill... ugly */
448         list = TNY_LIST(tny_simple_list_new());
449         tny_account_store_get_accounts (TNY_ACCOUNT_STORE(obj), list,
450                                         TNY_ACCOUNT_STORE_BOTH);
451         g_object_unref(list);
452         
453         /* Connect signals */
454         g_signal_connect (G_OBJECT(account_mgr), "account_changed",
455                                        G_CALLBACK (on_account_changed), obj);
456         g_signal_connect (G_OBJECT(account_mgr), "account_removed",
457                                        G_CALLBACK (on_account_removed), obj);
458
459         return MODEST_TNY_ACCOUNT_STORE(obj);
460 }
461
462
463 static void
464 get_cached_accounts (TnyAccountStore *self, TnyList *list, TnyAccountType type)
465 {
466         ModestTnyAccountStorePrivate *priv;
467         GSList                       *accounts, *cursor;
468         
469         priv     = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
470         accounts = (type == TNY_ACCOUNT_TYPE_STORE ? priv->store_accounts : priv->transport_accounts);
471
472         cursor = accounts;
473         while (cursor) {
474                 tny_list_prepend (list, G_OBJECT(cursor->data));
475                 cursor = cursor->next;
476         }
477 }
478
479
480
481 /* this function fills the TnyList, and also returns a GSList of the accounts,
482  * for caching purposes
483  */
484 static GSList*
485 get_server_accounts  (TnyAccountStore *self, TnyList *list, TnyAccountType type)
486 {
487         ModestTnyAccountStorePrivate *priv = NULL;
488         GSList                       *account_names = NULL, *cursor = NULL;
489         GSList                       *accounts = NULL;
490         
491         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
492
493         /* these account names, not server_account names */
494         account_names = modest_account_mgr_account_names (priv->account_mgr,FALSE);
495                 
496         for (cursor = account_names; cursor; cursor = cursor->next) {
497                 
498                 gchar *account_name = (gchar*)cursor->data;
499                 
500                 /* we get the server_accounts for enabled accounts */
501                 if (modest_account_mgr_get_enabled(priv->account_mgr, account_name)) {
502                         TnyAccount *tny_account = 
503                                 modest_tny_account_new_from_account (priv->account_mgr,
504                                                                      account_name,
505                                                                      type, priv->session,
506                                                                      get_password,
507                                                                      forget_password);
508                         if (tny_account) {
509                                 g_object_set_data (G_OBJECT(tny_account), "account_store",
510                                                    (gpointer)self);
511                                 if (list)
512                                         tny_list_prepend (list, G_OBJECT(tny_account));
513                                 
514                                 accounts = g_slist_append (accounts, tny_account); /* cache it */
515                         } else
516                                 g_printerr ("modest: failed to create account for %s\n",
517                                             account_name);
518                 }
519                 g_free (account_name);
520         }
521         g_slist_free (account_names);
522
523         /* also, add the local folder pseudo-account */
524         if (type == TNY_ACCOUNT_TYPE_STORE) {
525                 TnyAccount *tny_account =
526                         modest_tny_account_new_for_local_folders (priv->account_mgr, priv->session);
527                 if (list)
528                         tny_list_prepend (list, G_OBJECT(tny_account));
529                 accounts = g_slist_append (accounts, tny_account); /* cache it */
530         }       
531         return accounts;
532 }       
533
534
535 static void
536 modest_tny_account_store_get_accounts  (TnyAccountStore *self, TnyList *list,
537                                         TnyGetAccountsRequestType request_type)
538 {
539         ModestTnyAccountStorePrivate *priv;
540         
541         g_return_if_fail (self);
542         g_return_if_fail (TNY_IS_LIST(list));
543         
544         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
545         
546         if (request_type == TNY_ACCOUNT_STORE_BOTH) {
547                 modest_tny_account_store_get_accounts (self, list,
548                                                        TNY_ACCOUNT_STORE_STORE_ACCOUNTS);
549                 modest_tny_account_store_get_accounts (self, list,
550                                                        TNY_ACCOUNT_STORE_TRANSPORT_ACCOUNTS);
551                 return;
552         }
553         
554         if (request_type == TNY_ACCOUNT_STORE_STORE_ACCOUNTS)  {
555                 if (!priv->store_accounts)
556                         priv->store_accounts =
557                                 get_server_accounts (self, list, TNY_ACCOUNT_TYPE_STORE);
558                 else
559                         get_cached_accounts (self, list, TNY_ACCOUNT_TYPE_STORE);
560                 
561         } else if (request_type == TNY_ACCOUNT_STORE_TRANSPORT_ACCOUNTS) {
562                 if (!priv->transport_accounts)
563                         priv->transport_accounts =
564                                 get_server_accounts (self, list, TNY_ACCOUNT_TYPE_TRANSPORT);
565                 else
566                         get_cached_accounts (self, list, TNY_ACCOUNT_TYPE_TRANSPORT);
567         } else
568                 g_return_if_reached (); /* incorrect req type */
569 }
570
571
572 static const gchar*
573 modest_tny_account_store_get_cache_dir (TnyAccountStore *self)
574 {
575         ModestTnyAccountStorePrivate *priv;
576         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
577         
578         if (!priv->cache_dir)
579                 priv->cache_dir = g_build_filename (g_get_home_dir(), 
580                                                     MODEST_DIR, MODEST_CACHE_DIR, NULL);
581         return priv->cache_dir;
582 }
583
584
585 /*
586  * callers need to unref
587  */
588 static TnyDevice*
589 modest_tny_account_store_get_device (TnyAccountStore *self)
590 {
591         ModestTnyAccountStorePrivate *priv;
592
593         g_return_val_if_fail (self, NULL);
594         
595         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
596
597         if (priv->device)
598                 return g_object_ref (G_OBJECT(priv->device));
599         else
600                 return NULL;
601 }
602
603
604 static TnyAccount*
605 modest_tny_account_store_find_account_by_url (TnyAccountStore *self, const gchar* url_string)
606 {
607         TnyAccount *account = NULL;
608         ModestTnyAccountStorePrivate *priv;     
609         GSList *cursor;
610         
611         g_return_val_if_fail (self, NULL);
612         g_return_val_if_fail (url_string, NULL);
613         
614         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
615
616         for (cursor = priv->store_accounts; cursor ; cursor = cursor->next) {
617                 if (tny_account_matches_url_string (TNY_ACCOUNT(cursor->data), url_string)) {
618                         account = TNY_ACCOUNT(cursor->data);
619                         break;
620                 }
621         }
622
623         if (!account) {
624                 for (cursor = priv->transport_accounts; !account && cursor ; cursor = cursor->next) {
625                         if (tny_account_matches_url_string (TNY_ACCOUNT(cursor->data), url_string)) {
626                                 account = TNY_ACCOUNT(cursor->data);
627                                 break;
628                         }
629                 }
630         }
631
632         if (account)
633                 g_object_ref (G_OBJECT(account));
634
635         return account;
636 }
637
638
639
640 static gboolean
641 modest_tny_account_store_alert (TnyAccountStore *self, TnyAlertType type,
642                                 gboolean question, const GError *error)
643 {
644         g_return_val_if_fail (error, FALSE);
645
646         if ((error->domain != TNY_ACCOUNT_ERROR) 
647                 && (error->domain != TNY_ACCOUNT_STORE_ERROR)) {
648                 g_warning("%s: Unexpected error domain: != TNY_ACCOUNT_ERROR: %d, message=%s", 
649                         __FUNCTION__, error->domain, error->message); 
650                 return FALSE;
651         }
652         
653         /* printf("DEBUG: %s: error->message=%s\n", __FUNCTION__, error->message); */
654         
655
656         /* const gchar *prompt = NULL; */
657         gchar *prompt = NULL;
658         switch (error->code) {
659                 case TNY_ACCOUNT_ERROR_TRY_CONNECT:
660                 /* The tinymail camel implementation just sends us this for almost 
661                  * everything, so we have to guess at the cause.
662                  * It could be a wrong password, or inability to resolve a hostname, 
663                  * or lack of network, or something entirely different: */
664                 case TNY_ACCOUNT_STORE_ERROR_UNKNOWN_ALERT: 
665                     g_debug ("%s: Handling GError domain=%d, code=%d, message=%s", 
666                                 __FUNCTION__, error->domain, error->code, error->message);
667                         
668                         /* TODO: Remove the internal error message for the real release.
669                          * This is just so the testers can give us more information: */
670                         /* prompt = _("Modest account not yet fully configured."); */
671                         prompt = g_strdup_printf(_("Modest account not yet fully configured. Error=%s"), 
672                                 error->message);
673                         break;
674                 default:
675                         g_warning ("%s: Unhandled GError code: %d, message=%s", 
676                                 __FUNCTION__, error->code, error->message);
677                         prompt = NULL;
678                 break;
679         }
680         
681         if (!prompt)
682                 return FALSE;
683
684 #ifdef MODEST_PLATFORM_MAEMO
685         /* The Tinymail documentation says that we should show Yes and No buttons, 
686          * when it is a question.
687          * Obviously, we need tinymail to use more specific error codes instead,
688          * so we know what buttons to show. */
689          GtkWidget *dialog = NULL;
690          if (question) {
691                 dialog = GTK_WIDGET (hildon_note_new_confirmation (NULL, 
692                         prompt));
693          } else {
694                 dialog = GTK_WIDGET (hildon_note_new_information (NULL, 
695                         prompt));
696          }
697 #else
698
699         GtkMessageType gtktype = GTK_MESSAGE_ERROR;
700         switch (type)
701         {
702                 case TNY_ALERT_TYPE_INFO:
703                 gtktype = GTK_MESSAGE_INFO;
704                 break;
705                 case TNY_ALERT_TYPE_WARNING:
706                 gtktype = GTK_MESSAGE_WARNING;
707                 break;
708                 case TNY_ALERT_TYPE_ERROR:
709                 default:
710                 gtktype = GTK_MESSAGE_ERROR;
711                 break;
712         }
713         
714         GtkWidget *dialog = gtk_message_dialog_new (NULL, GTK_DIALOG_MODAL,
715                 gtktype, GTK_BUTTONS_YES_NO, prompt);
716 #endif /* #ifdef MODEST_PLATFORM_MAEMO */
717
718         gboolean retval = TRUE;
719         const int response = gtk_dialog_run (GTK_DIALOG (dialog));
720         if (question) {
721                 retval = (response == GTK_RESPONSE_YES) ||
722                                  (response == GTK_RESPONSE_OK); 
723         }
724
725         gtk_widget_destroy (dialog);
726         
727         /* TODO: Don't free this when we no longer strdup the message for testers. */
728         g_free (prompt);
729
730
731         printf("DEBUG: %s: returning %d\n", __FUNCTION__, retval);
732         return retval;
733 }
734
735
736 static void
737 modest_tny_account_store_init (gpointer g, gpointer iface_data)
738 {
739         TnyAccountStoreIface *klass;
740
741         g_return_if_fail (g);
742
743         klass = (TnyAccountStoreIface *)g;
744
745         klass->get_accounts_func =
746                 modest_tny_account_store_get_accounts;
747         klass->get_cache_dir_func =
748                 modest_tny_account_store_get_cache_dir;
749         klass->get_device_func =
750                 modest_tny_account_store_get_device;
751         klass->alert_func =
752                 modest_tny_account_store_alert;
753         klass->find_account_func =
754                 modest_tny_account_store_find_account_by_url;
755 }
756
757 void
758 modest_tny_account_store_set_get_pass_func (ModestTnyAccountStore *self,
759                                             ModestTnyGetPassFunc func)
760 {
761         /* not implemented, we use signals */
762         g_printerr ("modest: set_get_pass_func not implemented\n");
763 }
764
765 TnySessionCamel*
766 modest_tny_account_store_get_session  (TnyAccountStore *self)
767 {
768         g_return_val_if_fail (self, NULL);
769         return MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE (self)->session;
770 }
771
772
773 TnyAccount*
774 modest_tny_account_store_get_tny_account_by_id  (ModestTnyAccountStore *self, const gchar *id)
775 {
776         TnyAccount *account = NULL;
777         ModestTnyAccountStorePrivate *priv;     
778         GSList *cursor;
779
780         g_return_val_if_fail (self, NULL);
781         g_return_val_if_fail (id, NULL);
782         
783         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
784
785
786         for (cursor = priv->store_accounts; cursor ; cursor = cursor->next) {
787                 const gchar *acc_id = tny_account_get_id (TNY_ACCOUNT(cursor->data));
788                 if (acc_id && strcmp (acc_id, id) == 0) {
789                         account = TNY_ACCOUNT(cursor->data);
790                         break;
791                 }
792         }
793                 
794         /* if we already found something, no need to search the transport accounts */
795         for (cursor = priv->transport_accounts; !account && cursor ; cursor = cursor->next) {
796                 const gchar *acc_id = tny_account_get_id (TNY_ACCOUNT(cursor->data));
797                 if (acc_id && strcmp (acc_id, id) == 0) {
798                         account = TNY_ACCOUNT(cursor->data);
799                         break;
800                 }
801         }
802
803         if (account)
804                 g_object_ref (G_OBJECT(account));
805         
806         return account;
807 }
808
809 TnyAccount*
810 modest_tny_account_store_get_tny_account_by_account (ModestTnyAccountStore *self,
811                                                      const gchar *account_name,
812                                                      TnyAccountType type)
813 {
814         TnyAccount *account = NULL;
815         ModestAccountData *account_data;
816         const gchar *id = NULL;
817         ModestTnyAccountStorePrivate *priv;     
818
819         g_return_val_if_fail (self, NULL);
820         g_return_val_if_fail (account_name, NULL);
821         g_return_val_if_fail (type == TNY_ACCOUNT_TYPE_STORE || type == TNY_ACCOUNT_TYPE_TRANSPORT,
822                               NULL);
823         
824         priv = MODEST_TNY_ACCOUNT_STORE_GET_PRIVATE(self);
825         
826         account_data = modest_account_mgr_get_account_data (priv->account_mgr, account_name);
827         if (!account_data) {
828                 g_printerr ("modest: cannot get account data for account '%s'\n", account_name);
829                 return NULL;
830         }
831
832         if (type == TNY_ACCOUNT_TYPE_STORE && account_data->store_account)
833                 id = account_data->store_account->account_name;
834         else if (account_data->transport_account)
835                 id = account_data->transport_account->account_name;
836
837         if (!id)
838                 g_printerr ("modest: could not get an id for account %s\n",
839                             account_name);
840         else    
841                 account = modest_tny_account_store_get_tny_account_by_id (self, id);
842
843         if (!account)
844                 g_printerr ("modest: could not get tny %s account for %s (id=%s)\n",
845                             type == TNY_ACCOUNT_TYPE_STORE? "store" : "transport",
846                             account_name, id ? id : "<none>");
847
848         modest_account_mgr_free_account_data (priv->account_mgr, account_data);
849         return account; 
850 }
851
852 static TnyAccount*
853 get_smtp_specific_transport_account_for_open_connection (ModestTnyAccountStore *self,
854                                                          const gchar *account_name)
855 {
856         /* Get the current connection: */
857         TnyDevice *device = modest_runtime_get_device ();
858         
859         if (!tny_device_is_online (device))
860                 return NULL;
861
862 #ifdef MODEST_PLATFORM_MAEMO
863         g_assert (TNY_IS_MAEMO_CONIC_DEVICE (device));
864         TnyMaemoConicDevice *maemo_device = TNY_MAEMO_CONIC_DEVICE (device);    
865         const gchar* iap_id = tny_maemo_conic_device_get_current_iap_id (maemo_device);
866         if (!iap_id)
867                 return NULL;
868                 
869         ConIcIap* connection = tny_maemo_conic_device_get_iap (maemo_device, iap_id);
870         if (!connection)
871                 return NULL;
872                 
873         const gchar *connection_name = con_ic_iap_get_name (connection);
874         if (!connection_name)
875                 return NULL;
876         
877         /*  Get the connection-specific transport acccount, if any: */
878         ModestAccountMgr *account_manager = modest_runtime_get_account_mgr ();
879         gchar* server_account_name = modest_account_mgr_get_connection_specific_smtp (account_manager, 
880                 account_name, connection_name);
881                 
882         if (!server_account_name)
883                 return NULL; /* No connection-specific SMTP server was specified for this connection. */
884                 
885         TnyAccount* account = modest_tny_account_store_get_tny_account_by_id (self, server_account_name);
886         g_free (server_account_name);   
887
888         /* Unref the get()ed object, as required by the tny_maemo_conic_device_get_iap() documentation. */
889         g_object_unref (connection);
890         
891         return account;
892 #else
893         return NULL; /* TODO: Implement this for GNOME, instead of just Maemo? */
894 #endif /* MODEST_PLATFORM_MAEMO */
895 }
896
897                                                                  
898 TnyAccount*
899 modest_tny_account_store_get_transport_account_for_open_connection (ModestTnyAccountStore *self,
900                                                                     const gchar *account_name)
901 {
902         /*  Get the connection-specific transport acccount, if any: */
903         TnyAccount *account = get_smtp_specific_transport_account_for_open_connection (self, account_name);
904                         
905         /* If there is no connection-specific transport account (the common case), 
906          * just get the regular transport account: */
907         if (!account) {         
908                 account = modest_tny_account_store_get_tny_account_by_account (self, account_name, 
909                                                      TNY_ACCOUNT_TYPE_TRANSPORT);
910         }
911                              
912         return account;
913 }