git.maemo.org Git - modest/blob - src/modest-search.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 #ifndef _GNU_SOURCE
  31 #define _GNU_SOURCE
  32 #endif
  33
  34 #ifdef HAVE_CONFIG_H
  35 #include <config.h>
  36 #endif
  37
  38 #include <string.h>
  39
  40 #include <tny-shared.h>
  41 #include <tny-folder.h>
  42 #include <tny-folder-store.h>
  43 #include <tny-list.h>
  44 #include <tny-iterator.h>
  45 #include <tny-simple-list.h>
  46
  47 #include <libmodest-dbus-client/libmodest-dbus-client.h>
  48
  49 #include "modest-text-utils.h"
  50 #include "modest-account-mgr.h"
  51 #include "modest-tny-account-store.h"
  52 #include "modest-tny-account.h"
  53 #include "modest-search.h"
  54 #include "modest-runtime.h"
  55
  56 static gchar *
  57 g_strdup_or_null (const gchar *str)
  58 {
  59         gchar *string = NULL;
  60
  61         if  (str != NULL) {
  62                 string = g_strdup (str);
  63         }
  64
  65         return string;
  66 }
  67
  68 static GList*
  69 add_hit (GList *list, TnyHeader *header, TnyFolder *folder)
  70 {
  71         ModestSearchHit *hit;
  72         TnyHeaderFlags   flags;
  73         char            *furl;
  74         char            *msg_url;
  75         const char      *uid;
  76         const char      *subject;
  77         const char      *sender;
  78
  79         hit = g_slice_new0 (ModestSearchHit);
  80
  81         furl = tny_folder_get_url_string (folder);
  82         if (!furl) {
  83                 g_warning ("%s: tny_folder_get_url_string(): returned NULL for folder. Folder name=%s\n", __FUNCTION__, tny_folder_get_name (folder));
  84         }
  85
  86         /* Make sure that we use the short UID instead of the long UID,
  87          * and/or find out what UID form is used when finding, in camel_data_cache_get().
  88          * so we can find what we get. Philip is working on this.
  89          */
  90         uid = tny_header_get_uid (header);
  91         if (!furl) {
  92                 g_warning ("%s: tny_header_get_uid(): returned NULL for message with subject=%s\n", __FUNCTION__, tny_header_get_subject (header));
  93         }
  94
  95         msg_url = g_strdup_printf ("%s/%s", furl, uid);
  96
  97         subject = tny_header_get_subject (header);
  98         sender = tny_header_get_from (header);
  99
 100         flags = tny_header_get_flags (header);
 101
 102         hit->msgid = msg_url;
 103         hit->subject = g_strdup_or_null (subject);
 104         hit->sender = g_strdup_or_null (sender);
 105         hit->folder = furl; /* We just provide our new instance instead of copying it and freeing it. */
 106         hit->msize = tny_header_get_message_size (header);
 107         hit->has_attachment = flags & TNY_HEADER_FLAG_ATTACHMENTS;
 108         hit->is_unread = ! (flags & TNY_HEADER_FLAG_SEEN);
 109         hit->timestamp = tny_header_get_date_received (header);
 110
 111         return g_list_prepend (list, hit);
 112 }
 113
 114 static gboolean
 115 read_chunk (TnyStream *stream, char *buffer, gsize count, gsize *nread)
 116 {
 117         gsize _nread;
 118         gssize res;
 119
 120         _nread = 0;
 121         while (_nread < count) {
 122                 res = tny_stream_read (stream,
 123                                        buffer + _nread,
 124                                        count - _nread);
 125                 if (res == -1) {
 126                         *nread = _nread;
 127                         return FALSE;
 128                 }
 129
 130                 if (res == 0)
 131                         break;
 132
 133                 _nread += res;
 134         }
 135
 136         *nread = _nread;
 137         return TRUE;
 138
 139
 140 }
 141
 142 #ifdef MODEST_HAVE_OGS
 143 static gboolean
 144 search_mime_part_ogs (TnyMimePart *part, ModestSearch *search)
 145 {
 146         TnyStream *stream;
 147         char       buffer[4096];
 148         gsize      len;
 149         gsize      nread;
 150         gboolean   is_html = FALSE;
 151         gboolean   found;
 152         gboolean   res;
 153
 154
 155         if (! tny_mime_part_content_type_is (part, "text/ *") ||
 156             ! (is_html = tny_mime_part_content_type_is (part, "text/html"))) {
 157                 return FALSE;
 158         }
 159
 160         found = FALSE;
 161         len = sizeof (buffer);
 162         stream = tny_mime_part_get_stream (part);
 163
 164         while ((res = read_chunk (stream, buffer, len, &nread))) {
 165
 166                 if (is_html) {
 167
 168                         found = ogs_text_searcher_search_html (search->text_searcher,
 169                                                                buffer,
 170                                                                nread,
 171                                                                nread < len);
 172                 } else {
 173                         found = ogs_text_searcher_search_text (search->text_searcher,
 174                                                                buffer,
 175                                                                nread);
 176                 }
 177
 178                 if (found) {
 179                         break;
 180                 }
 181
 182         }
 183
 184         if (!found) {
 185                 found = ogs_text_searcher_search_done (search->text_searcher);
 186         }
 187
 188         ogs_text_searcher_reset (search->text_searcher);
 189
 190         return found;
 191 }
 192 #endif /*MODEST_HAVE_OGS*/
 193
 194 static gboolean
 195 search_mime_part_strcmp (TnyMimePart *part, ModestSearch *search)
 196 {
 197         TnyStream *stream;
 198         char       buffer[8193];
 199         char      *chunk[2];
 200         gsize      len;
 201         gssize     nread;
 202         gboolean   found;
 203         gboolean   res;
 204
 205         if (! tny_mime_part_content_type_is (part, "text/ *")) {
 206                 return FALSE;
 207         }
 208
 209         found = FALSE;
 210         len = (sizeof (buffer) - 1) / 2;
 211
 212         if (strlen (search->body) > len) {
 213                 g_warning ("Search term bigger then chunk."
 214                            "We might not find everything");
 215         }
 216
 217         stream = tny_mime_part_get_stream (part);
 218
 219         memset (buffer, 0, sizeof (buffer));
 220         chunk[0] = buffer;
 221         chunk[1] = buffer + len;
 222
 223         res = read_chunk (stream, chunk[0], len, &nread);
 224
 225         if (res == FALSE) {
 226                 goto done;
 227         }
 228
 229         found = !modest_text_utils_utf8_strcmp (search->body,
 230                                                 buffer,
 231                                                 TRUE);
 232         if (found) {
 233                 goto done;
 234         }
 235
 236         /* This works like this:
 237          * buffer: [ooooooooooo|xxxxxxxxxxxx|\0]
 238          *          ^chunk[0]  ^chunk[1]
 239          * we have prefilled chunk[0] now we always read into chunk[1]
 240          * and then move the content of chunk[1] to chunk[0].
 241          * The idea is to prevent not finding search terms that are
 242          * spread across 2 reads:
 243          * buffer: [ooooooooTES|Txxxxxxxxxxx|\0]
 244          * We should catch that because we always search the whole
 245          * buffer not only the chunks.
 246          *
 247          * Of course that breaks for search terms > sizeof (chunk)
 248          * but sizeof (chunk) should be big enough I guess (see
 249          * the g_warning in this function)
 250          * */
 251         while ((res = read_chunk (stream, chunk[1], len, &nread))) {
 252                 buffer[len + nread] = '\0';
 253
 254                 found = !modest_text_utils_utf8_strcmp (search->body,
 255                                                         buffer,
 256                                                         TRUE);
 257
 258                 if (found) {
 259                         break;
 260                 }
 261
 262                 /* also move the \0 */
 263                 g_memmove (chunk[0], chunk[1], len + 1);
 264         }
 265
 266 done:
 267         g_object_unref (stream);
 268         return found;
 269 }
 270
 271 static gboolean
 272 search_string (const char      *what,
 273                const char      *where,
 274                ModestSearch    *search)
 275 {
 276         gboolean found;
 277 #ifdef MODEST_HAVE_OGS
 278         if (search->flags & MODEST_SEARCH_USE_OGS) {
 279                 found = ogs_text_searcher_search_text (search->text_searcher,
 280                                                        where,
 281                                                        strlen (where));
 282
 283                 ogs_text_searcher_reset (search->text_searcher);
 284         } else {
 285 #endif
 286                 if (what == NULL || where == NULL) {
 287                         return FALSE;
 288                 }
 289
 290                 found = !modest_text_utils_utf8_strcmp (what, where, TRUE);
 291 #ifdef MODEST_HAVE_OGS
 292         }
 293 #endif
 294         return found;
 295 }
 296
 297
 298
 299 /**
 300  * modest_search:
 301  * @folder: a #TnyFolder instance
 302  * @search: a #ModestSearch query
 303  *
 304  * This operation will search @folder for headers that match the query @search.
 305  * It will return a doubly linked list with URIs that point to the message.
 306  **/
 307 GList *
 308 modest_search_folder (TnyFolder *folder, ModestSearch *search)
 309 {
 310         GList *retval = NULL;
 311         TnyIterator *iter;
 312         TnyList *list;
 313         gboolean (*part_search_func) (TnyMimePart *part, ModestSearch *search);
 314
 315         part_search_func = search_mime_part_strcmp;
 316
 317 #ifdef MODEST_HAVE_OGS
 318         if (search->flags & MODEST_SEARCH_USE_OGS) {
 319
 320                 if (search->text_searcher == NULL && search->query != NULL) {
 321                         OgsTextSearcher *text_searcher;
 322
 323                         text_searcher = ogs_text_searcher_new (FALSE);
 324                         ogs_text_searcher_parse_query (text_searcher, search->query);
 325                         search->text_searcher = text_searcher;
 326                 }
 327
 328                 part_search_func = search_mime_part_ogs;
 329         }
 330 #endif
 331
 332         list = tny_simple_list_new ();
 333         tny_folder_get_headers (folder, list, FALSE, NULL);
 334
 335         iter = tny_list_create_iterator (list);
 336
 337         while (!tny_iterator_is_done (iter)) {
 338                 TnyHeader *cur = (TnyHeader *) tny_iterator_get_current (iter);
 339                 time_t t = tny_header_get_date_sent (cur);
 340                 gboolean found = FALSE;
 341
 342                 if (search->flags & MODEST_SEARCH_BEFORE)
 343                         if (!(t <= search->before))
 344                                 goto go_next;
 345
 346                 if (search->flags & MODEST_SEARCH_AFTER)
 347                         if (!(t >= search->after))
 348                                 goto go_next;
 349
 350                 if (search->flags & MODEST_SEARCH_SIZE)
 351                         if (tny_header_get_message_size (cur) < search->minsize)
 352                                 goto go_next;
 353
 354                 if (search->flags & MODEST_SEARCH_SUBJECT) {
 355                         const char *str = tny_header_get_subject (cur);
 356
 357                         if ((found = search_string (search->subject, str, search))) {
 358                             retval = add_hit (retval, cur, folder);
 359                         }
 360                 }
 361
 362                 if (!found && search->flags & MODEST_SEARCH_SENDER) {
 363                         char *str = g_strdup (tny_header_get_from (cur));
 364
 365                         if ((found = search_string (search->from, (const gchar *) str, search))) {
 366                                 retval = add_hit (retval, cur, folder);
 367                         }
 368                         g_free (str);
 369                 }
 370
 371                 if (!found && search->flags & MODEST_SEARCH_RECIPIENT) {
 372                         const char *str = tny_header_get_to (cur);
 373
 374                         if ((found = search_string (search->recipient, str, search))) {
 375                                 retval = add_hit (retval, cur, folder);
 376                         }
 377                 }
 378
 379                 if (!found && search->flags & MODEST_SEARCH_BODY) {
 380                         TnyHeaderFlags flags;
 381                         GError      *err = NULL;
 382                         TnyMsg      *msg = NULL;
 383                         TnyIterator *piter;
 384                         TnyList     *parts;
 385
 386                         flags = tny_header_get_flags (cur);
 387
 388                         if (!(flags & TNY_HEADER_FLAG_CACHED)) {
 389                                 goto go_next;
 390                         }
 391
 392                         msg = tny_folder_get_msg (folder, cur, &err);
 393
 394                         if (err != NULL || msg == NULL) {
 395                                 g_warning ("%s: Could not get message.\n", __FUNCTION__);
 396                                 g_error_free (err);
 397
 398                                 if (msg) {
 399                                         g_object_unref (msg);
 400                                 }
 401                         }
 402
 403                         parts = tny_simple_list_new ();
 404                         tny_mime_part_get_parts (TNY_MIME_PART (msg), parts);
 405
 406                         piter = tny_list_create_iterator (parts);
 407                         while (!found && !tny_iterator_is_done (piter)) {
 408                                 TnyMimePart *pcur = (TnyMimePart *) tny_iterator_get_current (piter);
 409
 410                                 if ((found = part_search_func (pcur, search))) {
 411                                         retval = add_hit (retval, cur, folder);
 412                                 }
 413
 414                                 g_object_unref (pcur);
 415                                 tny_iterator_next (piter);
 416                         }
 417
 418                         g_object_unref (piter);
 419                         g_object_unref (parts);
 420                         g_object_unref (msg);
 421
 422                 }
 423
 424 go_next:
 425                 g_object_unref (cur);
 426                 tny_iterator_next (iter);
 427         }
 428
 429         g_object_unref (iter);
 430         g_object_unref (list);
 431         return retval;
 432 }
 433
 434 GList *
 435 modest_search_account (TnyAccount *account, ModestSearch *search)
 436 {
 437         TnyFolderStore      *store;
 438         TnyIterator         *iter;
 439         TnyList             *folders;
 440         GList               *hits;
 441         GError              *error;
 442
 443         error = NULL;
 444         hits = NULL;
 445
 446         store = TNY_FOLDER_STORE (account);
 447
 448         folders = tny_simple_list_new ();
 449         tny_folder_store_get_folders (store, folders, NULL, &error);
 450
 451         if (error != NULL) {
 452                 g_object_unref (folders);
 453                 return NULL;
 454         }
 455
 456         iter = tny_list_create_iterator (folders);
 457         while (!tny_iterator_is_done (iter)) {
 458                 TnyFolder *folder;
 459                 GList     *res;
 460
 461                 folder = TNY_FOLDER (tny_iterator_get_current (iter));
 462
 463                 res = modest_search_folder (folder, search);
 464
 465                 if (res != NULL) {
 466                         if (hits == NULL) {
 467                                 hits = res;
 468                         } else {
 469                                 hits = g_list_concat (hits, res);
 470                         }
 471                 }
 472
 473                 g_object_unref (folder);
 474                 tny_iterator_next (iter);
 475         }
 476
 477         g_object_unref (iter);
 478         g_object_unref (folders);
 479
 480         return hits;
 481 }
 482
 483 GList *
 484 modest_search_all_accounts (ModestSearch *search)
 485 {
 486         ModestTnyAccountStore *astore;
 487         TnyList               *accounts;
 488         TnyIterator           *iter;
 489         GList                 *hits;
 490
 491         hits = NULL;
 492         astore = modest_runtime_get_account_store ();
 493
 494         accounts = tny_simple_list_new ();
 495         tny_account_store_get_accounts (TNY_ACCOUNT_STORE (astore),
 496                                         accounts,
 497                                         TNY_ACCOUNT_STORE_STORE_ACCOUNTS);
 498
 499         iter = tny_list_create_iterator (accounts);
 500         while (!tny_iterator_is_done (iter)) {
 501                 TnyAccount *account;
 502                 GList      *res;
 503
 504                 account = TNY_ACCOUNT (tny_iterator_get_current (iter));
 505
 506                 g_debug ("DEBUG: %s: Searching account %s",
 507                          __FUNCTION__, tny_account_get_name (account));
 508                 res = modest_search_account (account, search);
 509
 510                 if (res != NULL) {
 511
 512                         if (hits == NULL) {
 513                                 hits = res;
 514                         } else {
 515                                 hits = g_list_concat (hits, res);
 516                         }
 517                 }
 518
 519                 g_object_unref (account);
 520                 tny_iterator_next (iter);
 521         }
 522
 523         g_object_unref (accounts);
 524         g_object_unref (iter);
 525
 526         return hits;
 527 }
 528
 529