src/msgcache.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2012 Hiroyuki Yamamoto & The Claws Mail Team
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #include "claws-features.h"
  23 #endif
  24
  25 #include "defs.h"
  26
  27 #define _GNU_SOURCE
  28 #include <stdio.h>
  29
  30 #include <glib.h>
  31 #include <glib/gi18n.h>
  32 #ifdef _WIN32
  33 # include <w32lib.h>
  34 # define MAP_FAILED     ((char *) -1)
  35 #else
  36 # include <sys/mman.h>
  37 #endif
  38 #include <sys/types.h>
  39 #include <sys/stat.h>
  40
  41 #include <time.h>
  42
  43 #include "msgcache.h"
  44 #include "utils.h"
  45 #include "procmsg.h"
  46 #include "codeconv.h"
  47 #include "timing.h"
  48 #include "tags.h"
  49 #include "prefs_common.h"
  50
  51 #ifdef HAVE_FWRITE_UNLOCKED
  52 #define SC_FWRITE fwrite_unlocked
  53 #else
  54 #define SC_FWRITE fwrite
  55 #endif
  56
  57 #if G_BYTE_ORDER == G_BIG_ENDIAN
  58 #define bswap_32(x) \
  59      ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >>  8) | \
  60       (((x) & 0x0000ff00) <<  8) | (((x) & 0x000000ff) << 24))
  61
  62 #define MMAP_TO_GUINT32(x)      \
  63         (((x[3]&0xff)) |        \
  64          ((x[2]&0xff) << 8) |   \
  65          ((x[1]&0xff) << 16) |  \
  66          ((x[0]&0xff) << 24))
  67
  68 #define MMAP_TO_GUINT32_SWAPPED(x)      \
  69         (((x[0]&0xff)) |                \
  70          ((x[1]&0xff) << 8) |           \
  71          ((x[2]&0xff) << 16) |          \
  72          ((x[3]&0xff) << 24))
  73
  74 static gboolean msgcache_use_mmap_read = TRUE;
  75
  76 #else
  77 #define bswap_32(x) (x)
  78
  79 #define MMAP_TO_GUINT32(x)      \
  80         (((x[0]&0xff)) |        \
  81          ((x[1]&0xff) << 8) |   \
  82          ((x[2]&0xff) << 16) |  \
  83          ((x[3]&0xff) << 24))
  84
  85 #define MMAP_TO_GUINT32_SWAPPED(x)      \
  86         (((x[0]&0xff)) |                \
  87          ((x[1]&0xff) << 8) |           \
  88          ((x[2]&0xff) << 16) |          \
  89          ((x[3]&0xff) << 24))
  90
  91 static gboolean msgcache_use_mmap_read = TRUE;
  92 #endif
  93
  94 static gboolean swapping = TRUE;
  95
  96 typedef enum
  97 {
  98         DATA_READ,
  99         DATA_WRITE,
 100         DATA_APPEND
 101 } DataOpenMode;
 102
 103 struct _MsgCache {
 104         GHashTable      *msgnum_table;
 105         GHashTable      *msgid_table;
 106         guint            memusage;
 107         time_t           last_access;
 108 };
 109
 110 typedef struct _StringConverter StringConverter;
 111 struct _StringConverter {
 112         gchar *(*convert) (StringConverter *converter, gchar *srcstr);
 113         void   (*free)    (StringConverter *converter);
 114 };
 115
 116 typedef struct _StrdupConverter StrdupConverter;
 117 struct _StrdupConverter {
 118         StringConverter converter;
 119 };
 120
 121 typedef struct _CharsetConverter CharsetConverter;
 122 struct _CharsetConverter {
 123         StringConverter converter;
 124
 125         gchar *srccharset;
 126         gchar *dstcharset;
 127 };
 128
 129 MsgCache *msgcache_new(void)
 130 {
 131         MsgCache *cache;
 132
 133         cache = g_new0(MsgCache, 1),
 134         cache->msgnum_table = g_hash_table_new(g_int_hash, g_int_equal);
 135         cache->msgid_table = g_hash_table_new(g_str_hash, g_str_equal);
 136         cache->last_access = time(NULL);
 137
 138         return cache;
 139 }
 140
 141 static gboolean msgcache_msginfo_free_func(gpointer num, gpointer msginfo, gpointer user_data)
 142 {
 143         procmsg_msginfo_free((MsgInfo *)msginfo);
 144         return TRUE;
 145 }
 146
 147 void msgcache_destroy(MsgCache *cache)
 148 {
 149         cm_return_if_fail(cache != NULL);
 150
 151         g_hash_table_foreach_remove(cache->msgnum_table, msgcache_msginfo_free_func, NULL);
 152         g_hash_table_destroy(cache->msgid_table);
 153         g_hash_table_destroy(cache->msgnum_table);
 154         g_free(cache);
 155 }
 156
 157 void msgcache_add_msg(MsgCache *cache, MsgInfo *msginfo)
 158 {
 159         MsgInfo *newmsginfo;
 160
 161         cm_return_if_fail(cache != NULL);
 162         cm_return_if_fail(msginfo != NULL);
 163
 164         newmsginfo = procmsg_msginfo_new_ref(msginfo);
 165         g_hash_table_insert(cache->msgnum_table, &newmsginfo->msgnum, newmsginfo);
 166         if(newmsginfo->msgid != NULL)
 167                 g_hash_table_insert(cache->msgid_table, newmsginfo->msgid, newmsginfo);
 168         cache->memusage += procmsg_msginfo_memusage(msginfo);
 169         cache->last_access = time(NULL);
 170
 171         msginfo->folder->cache_dirty = TRUE;
 172
 173         debug_print("Cache size: %d messages, %u bytes\n", g_hash_table_size(cache->msgnum_table), cache->memusage);
 174 }
 175
 176 void msgcache_remove_msg(MsgCache *cache, guint msgnum)
 177 {
 178         MsgInfo *msginfo;
 179
 180         cm_return_if_fail(cache != NULL);
 181
 182         msginfo = (MsgInfo *) g_hash_table_lookup(cache->msgnum_table, &msgnum);
 183         if(!msginfo)
 184                 return;
 185
 186         cache->memusage -= procmsg_msginfo_memusage(msginfo);
 187         if(msginfo->msgid)
 188                 g_hash_table_remove(cache->msgid_table, msginfo->msgid);
 189         g_hash_table_remove(cache->msgnum_table, &msginfo->msgnum);
 190         procmsg_msginfo_free(msginfo);
 191         cache->last_access = time(NULL);
 192
 193         msginfo->folder->cache_dirty = TRUE;
 194
 195         debug_print("Cache size: %d messages, %u bytes\n", g_hash_table_size(cache->msgnum_table), cache->memusage);
 196 }
 197
 198 void msgcache_update_msg(MsgCache *cache, MsgInfo *msginfo)
 199 {
 200         MsgInfo *oldmsginfo, *newmsginfo;
 201
 202         cm_return_if_fail(cache != NULL);
 203         cm_return_if_fail(msginfo != NULL);
 204
 205         oldmsginfo = g_hash_table_lookup(cache->msgnum_table, &msginfo->msgnum);
 206         if(oldmsginfo && oldmsginfo->msgid)
 207                 g_hash_table_remove(cache->msgid_table, oldmsginfo->msgid);
 208         if (oldmsginfo) {
 209                 g_hash_table_remove(cache->msgnum_table, &oldmsginfo->msgnum);
 210                 cache->memusage -= procmsg_msginfo_memusage(oldmsginfo);
 211                 procmsg_msginfo_free(oldmsginfo);
 212         }
 213
 214         newmsginfo = procmsg_msginfo_new_ref(msginfo);
 215         g_hash_table_insert(cache->msgnum_table, &newmsginfo->msgnum, newmsginfo);
 216         if(newmsginfo->msgid)
 217                 g_hash_table_insert(cache->msgid_table, newmsginfo->msgid, newmsginfo);
 218         cache->memusage += procmsg_msginfo_memusage(newmsginfo);
 219         cache->last_access = time(NULL);
 220
 221         debug_print("Cache size: %d messages, %u bytes\n", g_hash_table_size(cache->msgnum_table), cache->memusage);
 222
 223         msginfo->folder->cache_dirty = TRUE;
 224
 225         return;
 226 }
 227
 228 MsgInfo *msgcache_get_msg(MsgCache *cache, guint num)
 229 {
 230         MsgInfo *msginfo;
 231
 232         cm_return_val_if_fail(cache != NULL, NULL);
 233
 234         msginfo = g_hash_table_lookup(cache->msgnum_table, &num);
 235         if(!msginfo)
 236                 return NULL;
 237         cache->last_access = time(NULL);
 238
 239         return procmsg_msginfo_new_ref(msginfo);
 240 }
 241
 242 MsgInfo *msgcache_get_msg_by_id(MsgCache *cache, const gchar *msgid)
 243 {
 244         MsgInfo *msginfo;
 245
 246         cm_return_val_if_fail(cache != NULL, NULL);
 247         cm_return_val_if_fail(msgid != NULL, NULL);
 248
 249         msginfo = g_hash_table_lookup(cache->msgid_table, msgid);
 250         if(!msginfo)
 251                 return NULL;
 252         cache->last_access = time(NULL);
 253
 254         return procmsg_msginfo_new_ref(msginfo);
 255 }
 256
 257 static void msgcache_get_msg_list_func(gpointer key, gpointer value, gpointer user_data)
 258 {
 259         MsgInfoList **listptr = user_data;
 260         MsgInfo *msginfo = value;
 261
 262         *listptr = g_slist_prepend(*listptr, procmsg_msginfo_new_ref(msginfo));
 263 }
 264
 265 MsgInfoList *msgcache_get_msg_list(MsgCache *cache)
 266 {
 267         MsgInfoList *msg_list = NULL;
 268         START_TIMING("");
 269         cm_return_val_if_fail(cache != NULL, NULL);
 270
 271         g_hash_table_foreach((GHashTable *)cache->msgnum_table, msgcache_get_msg_list_func, (gpointer)&msg_list);
 272         cache->last_access = time(NULL);
 273
 274         msg_list = g_slist_reverse(msg_list);
 275         END_TIMING();
 276         return msg_list;
 277 }
 278
 279 time_t msgcache_get_last_access_time(MsgCache *cache)
 280 {
 281         cm_return_val_if_fail(cache != NULL, 0);
 282
 283         return cache->last_access;
 284 }
 285
 286 gint msgcache_get_memory_usage(MsgCache *cache)
 287 {
 288         cm_return_val_if_fail(cache != NULL, 0);
 289
 290         return cache->memusage;
 291 }
 292
 293 /*
 294  *  Cache saving functions
 295  */
 296
 297 #define READ_CACHE_DATA(data, fp, total_len) \
 298 { \
 299         if ((tmp_len = msgcache_read_cache_data_str(fp, &data, conv)) < 0) { \
 300                 procmsg_msginfo_free(msginfo); \
 301                 error = TRUE; \
 302                 goto bail_err; \
 303         } \
 304         total_len += tmp_len; \
 305 }
 306
 307 #define READ_CACHE_DATA_INT(n, fp) \
 308 { \
 309         guint32 idata; \
 310         size_t ni; \
 311  \
 312         if ((ni = fread(&idata, sizeof(idata), 1, fp)) != 1) { \
 313                 g_warning("read_int: Cache data corrupted, read %zd of %zd at " \
 314                           "offset %ld\n", ni, sizeof(idata), ftell(fp)); \
 315                 procmsg_msginfo_free(msginfo); \
 316                 error = TRUE; \
 317                 goto bail_err; \
 318         } else \
 319                 n = swapping ? bswap_32(idata) : (idata);\
 320 }
 321
 322 #define GET_CACHE_DATA_INT(n)                                                                   \
 323 {                                                                                               \
 324         if (rem_len < 4) {                                                                      \
 325                 g_print("error at rem_len:%d\n", rem_len);                                      \
 326                 error = TRUE;                                                                   \
 327                 goto bail_err;                                                                  \
 328         }                                                                                       \
 329         n = (swapping ? (MMAP_TO_GUINT32_SWAPPED(walk_data)):(MMAP_TO_GUINT32(walk_data)));     \
 330         walk_data += 4; rem_len -= 4;                                                           \
 331 }
 332
 333 #define GET_CACHE_DATA(data, total_len) \
 334 { \
 335         GET_CACHE_DATA_INT(tmp_len);    \
 336         if (rem_len < tmp_len) {                                                                \
 337                 g_print("error at rem_len:%d (tmp_len %d)\n", rem_len, tmp_len);                \
 338                 error = TRUE;                                                                   \
 339                 goto bail_err;                                                                  \
 340         }                                                                                       \
 341         if ((tmp_len = msgcache_get_cache_data_str(walk_data, &data, tmp_len, conv)) < 0) { \
 342                 g_print("error at rem_len:%d\n", rem_len);\
 343                 procmsg_msginfo_free(msginfo); \
 344                 error = TRUE; \
 345                 goto bail_err; \
 346         } \
 347         total_len += tmp_len; \
 348         walk_data += tmp_len; rem_len -= tmp_len; \
 349 }
 350
 351
 352 #define WRITE_CACHE_DATA_INT(n, fp)                     \
 353 {                                                       \
 354         guint32 idata;                                  \
 355                                                         \
 356         idata = (guint32)bswap_32(n);                   \
 357         if (SC_FWRITE(&idata, sizeof(idata), 1, fp) != 1)       \
 358                 w_err = 1;                              \
 359         wrote += 4;                                     \
 360 }
 361
 362 #define PUT_CACHE_DATA_INT(n)                           \
 363 {                                                       \
 364         walk_data[0]=(((guint32)n)&0x000000ff);                 \
 365         walk_data[1]=(((guint32)n)&0x0000ff00)>>8;              \
 366         walk_data[2]=(((guint32)n)&0x00ff0000)>>16;             \
 367         walk_data[3]=(((guint32)n)&0xff000000)>>24;             \
 368         walk_data += 4;                                 \
 369         wrote += 4;                                     \
 370 }
 371
 372 #define WRITE_CACHE_DATA(data, fp) \
 373 { \
 374         size_t len;                                     \
 375         if (data == NULL)                               \
 376                 len = 0;                                \
 377         else                                            \
 378                 len = strlen(data);                     \
 379         WRITE_CACHE_DATA_INT(len, fp);                  \
 380         if (w_err == 0 && len > 0) {                    \
 381                 if (SC_FWRITE(data, 1, len, fp) != len) \
 382                         w_err = 1;                      \
 383                 wrote += len;                           \
 384         } \
 385 }
 386
 387 #define PUT_CACHE_DATA(data)                            \
 388 {                                                       \
 389         size_t len;                                     \
 390         if (data == NULL)                               \
 391                 len = 0;                                \
 392         else                                            \
 393                 len = strlen(data);                     \
 394         PUT_CACHE_DATA_INT(len);                        \
 395         if (len > 0) {                                  \
 396                 memcpy(walk_data, data, len);           \
 397                 walk_data += len;                       \
 398                 wrote += len;                           \
 399         }                                               \
 400 }
 401
 402 static FILE *msgcache_open_data_file(const gchar *file, guint version,
 403                                      DataOpenMode mode,
 404                                      gchar *buf, size_t buf_size)
 405 {
 406         FILE *fp;
 407         gint32 data_ver;
 408
 409         cm_return_val_if_fail(file != NULL, NULL);
 410
 411         if (mode == DATA_WRITE) {
 412                 int w_err = 0, wrote = 0;
 413                 if ((fp = g_fopen(file, "wb")) == NULL) {
 414                         FILE_OP_ERROR(file, "fopen");
 415                         return NULL;
 416                 }
 417                 if (change_file_mode_rw(fp, file) < 0)
 418                         FILE_OP_ERROR(file, "chmod");
 419
 420                 WRITE_CACHE_DATA_INT(version, fp);
 421                 if (w_err != 0) {
 422                         g_warning("failed to write int\n");
 423                         fclose(fp);
 424                         return NULL;
 425                 }
 426                 return fp;
 427         }
 428
 429         /* check version */
 430         if ((fp = g_fopen(file, "rb")) == NULL)
 431                 debug_print("Mark/Cache file '%s' not found\n", file);
 432         else {
 433                 if (buf && buf_size > 0)
 434                         setvbuf(fp, buf, _IOFBF, buf_size);
 435                 if (fread(&data_ver, sizeof(data_ver), 1, fp) != 1 ||
 436                          version != bswap_32(data_ver)) {
 437                         g_message("%s: Mark/Cache version is different (%u != %u).\n",
 438                                   file, bswap_32(data_ver), version);
 439                         fclose(fp);
 440                         fp = NULL;
 441                 }
 442                 data_ver = bswap_32(data_ver);
 443         }
 444
 445         if (mode == DATA_READ)
 446                 return fp;
 447
 448         if (fp) {
 449                 /* reopen with append mode */
 450                 fclose(fp);
 451                 if ((fp = g_fopen(file, "ab")) == NULL)
 452                         FILE_OP_ERROR(file, "fopen");
 453         } else {
 454                 /* open with overwrite mode if mark file doesn't exist or
 455                    version is different */
 456                 fp = msgcache_open_data_file(file, version, DATA_WRITE, buf,
 457                                             buf_size);
 458         }
 459
 460         return fp;
 461 }
 462
 463 static gint msgcache_read_cache_data_str(FILE *fp, gchar **str,
 464                                          StringConverter *conv)
 465 {
 466         gchar *tmpstr = NULL;
 467         size_t ni;
 468         guint32 len;
 469
 470         *str = NULL;
 471         if (!swapping) {
 472                 if ((ni = fread(&len, sizeof(len), 1, fp) != 1) ||
 473                     len > G_MAXINT) {
 474                         g_warning("read_data_str: Cache data (len) corrupted, read %zd "
 475                                   "of %zd bytes at offset %ld\n", ni, sizeof(len),
 476                                   ftell(fp));
 477                         return -1;
 478                 }
 479         } else {
 480                 if ((ni = fread(&len, sizeof(len), 1, fp) != 1) ||
 481                     bswap_32(len) > G_MAXINT) {
 482                         g_warning("read_data_str: Cache data (len) corrupted, read %zd "
 483                                   "of %zd bytes at offset %ld\n", ni, sizeof(len),
 484                                   ftell(fp));
 485                         return -1;
 486                 }
 487                 len = bswap_32(len);
 488         }
 489
 490         if (len == 0)
 491                 return 0;
 492
 493         tmpstr = g_try_malloc(len + 1);
 494
 495         if(tmpstr == NULL) {
 496                 return -1;
 497         }
 498
 499         if ((ni = fread(tmpstr, 1, len, fp)) != len) {
 500                 g_warning("read_data_str: Cache data corrupted, read %zd of %u "
 501                           "bytes at offset %ld\n",
 502                           ni, len, ftell(fp));
 503                 g_free(tmpstr);
 504                 return -1;
 505         }
 506         tmpstr[len] = 0;
 507
 508         if (conv != NULL) {
 509                 *str = conv->convert(conv, tmpstr);
 510                 g_free(tmpstr);
 511         } else
 512                 *str = tmpstr;
 513
 514         return len;
 515 }
 516
 517 static gint msgcache_get_cache_data_str(gchar *src, gchar **str, gint len,
 518                                          StringConverter *conv)
 519 {
 520         gchar *tmpstr = NULL;
 521
 522         *str = NULL;
 523
 524         if (len == 0)
 525                 return 0;
 526
 527         if(len > 2*1024*1024) {
 528                 g_warning("read_data_str: refusing to allocate %d bytes.\n", len);
 529                 return -1;
 530         }
 531
 532         tmpstr = g_try_malloc(len + 1);
 533
 534         if(tmpstr == NULL) {
 535                 return -1;
 536         }
 537
 538         memcpy(tmpstr, src, len);
 539         tmpstr[len] = 0;
 540
 541         if (conv != NULL) {
 542                 *str = conv->convert(conv, tmpstr);
 543                 g_free(tmpstr);
 544         } else
 545                 *str = tmpstr;
 546
 547         return len;
 548 }
 549
 550 static gchar *strconv_charset_convert(StringConverter *conv, gchar *srcstr)
 551 {
 552         CharsetConverter *charsetconv = (CharsetConverter *) conv;
 553
 554         return conv_codeset_strdup(srcstr, charsetconv->srccharset, charsetconv->dstcharset);
 555 }
 556
 557 static void strconv_charset_free(StringConverter *conv)
 558 {
 559         CharsetConverter *charsetconv = (CharsetConverter *) conv;
 560
 561         g_free(charsetconv->srccharset);
 562         g_free(charsetconv->dstcharset);
 563 }
 564
 565 MsgCache *msgcache_read_cache(FolderItem *item, const gchar *cache_file)
 566 {
 567         MsgCache *cache;
 568         FILE *fp;
 569         MsgInfo *msginfo;
 570         MsgTmpFlags tmp_flags = 0;
 571         gchar file_buf[BUFFSIZE];
 572         guint32 num;
 573         guint refnum;
 574         gboolean error = FALSE;
 575         StringConverter *conv = NULL;
 576         gchar *srccharset = NULL;
 577         const gchar *dstcharset = NULL;
 578         gchar *ref = NULL;
 579         guint memusage = 0;
 580         gint tmp_len = 0, map_len = -1;
 581         char *cache_data = NULL;
 582         struct stat st;
 583
 584         cm_return_val_if_fail(cache_file != NULL, NULL);
 585         cm_return_val_if_fail(item != NULL, NULL);
 586
 587         swapping = TRUE;
 588
 589         /* In case we can't open the mark file with MARK_VERSION, check if we can open it with the
 590          * swapped MARK_VERSION. As msgcache_open_data_file swaps it too, if this succeeds,
 591          * it means it's the old version (not little-endian) on a big-endian machine. The code has
 592          * no effect on x86 as their file doesn't change. */
 593
 594         if ((fp = msgcache_open_data_file
 595                 (cache_file, CACHE_VERSION, DATA_READ, file_buf, sizeof(file_buf))) == NULL) {
 596                 if ((fp = msgcache_open_data_file
 597                 (cache_file, bswap_32(CACHE_VERSION), DATA_READ, file_buf, sizeof(file_buf))) == NULL)
 598                         return NULL;
 599                 else
 600                         swapping = FALSE;
 601         }
 602
 603         debug_print("\tReading %sswapped message cache from %s...\n", swapping?"":"un", cache_file);
 604
 605         if (folder_has_parent_of_type(item, F_QUEUE)) {
 606                 tmp_flags |= MSG_QUEUED;
 607         } else if (folder_has_parent_of_type(item, F_DRAFT)) {
 608                 tmp_flags |= MSG_DRAFT;
 609         }
 610
 611         if (msgcache_read_cache_data_str(fp, &srccharset, NULL) < 0) {
 612                 fclose(fp);
 613                 return NULL;
 614         }
 615         dstcharset = CS_UTF_8;
 616         if (srccharset == NULL || dstcharset == NULL) {
 617                 conv = NULL;
 618         } else if (strcmp(srccharset, dstcharset) == 0) {
 619                 debug_print("using Noop Converter\n");
 620
 621                 conv = NULL;
 622         } else {
 623                 CharsetConverter *charsetconv;
 624
 625                 debug_print("using CharsetConverter\n");
 626
 627                 charsetconv = g_new0(CharsetConverter, 1);
 628                 charsetconv->converter.convert = strconv_charset_convert;
 629                 charsetconv->converter.free = strconv_charset_free;
 630                 charsetconv->srccharset = g_strdup(srccharset);
 631                 charsetconv->dstcharset = g_strdup(dstcharset);
 632
 633                 conv = (StringConverter *) charsetconv;
 634         }
 635         g_free(srccharset);
 636
 637         cache = msgcache_new();
 638
 639         if (msgcache_use_mmap_read == TRUE) {
 640                 if (fstat(fileno(fp), &st) >= 0)
 641                         map_len = st.st_size;
 642                 else
 643                         map_len = -1;
 644                 if (map_len > 0) {
 645 #ifdef G_OS_WIN32
 646                         cache_data = NULL;
 647                         HANDLE hFile, hMapping;
 648                         hFile = (HANDLE) _get_osfhandle (fileno(fp));
 649                         if (hFile == (HANDLE) -1)
 650                                 goto w32_fail;
 651                         hMapping = CreateFileMapping(hFile, NULL, PAGE_WRITECOPY, 0, 0, NULL);
 652                         if (!hMapping)
 653                                 goto w32_fail;
 654                         cache_data = (unsigned char *)MapViewOfFile(hMapping, FILE_MAP_COPY, 0, 0, 0);
 655                         CloseHandle (hMapping);
 656                 w32_fail:
 657                         ;
 658 #else
 659                         cache_data = mmap(NULL, map_len, PROT_READ, MAP_PRIVATE, fileno(fp), 0);
 660 #endif
 661                 }
 662         } else {
 663                 cache_data = NULL;
 664         }
 665         if (cache_data != NULL && cache_data != MAP_FAILED) {
 666                 int rem_len = map_len-ftell(fp);
 667                 char *walk_data = cache_data+ftell(fp);
 668
 669                 while(rem_len > 0) {
 670                         GET_CACHE_DATA_INT(num);
 671
 672                         msginfo = procmsg_msginfo_new();
 673                         msginfo->msgnum = num;
 674                         memusage += sizeof(MsgInfo);
 675
 676                         GET_CACHE_DATA_INT(msginfo->size);
 677                         GET_CACHE_DATA_INT(msginfo->mtime);
 678                         GET_CACHE_DATA_INT(msginfo->date_t);
 679                         GET_CACHE_DATA_INT(msginfo->flags.tmp_flags);
 680
 681                         GET_CACHE_DATA(msginfo->fromname, memusage);
 682
 683                         GET_CACHE_DATA(msginfo->date, memusage);
 684                         GET_CACHE_DATA(msginfo->from, memusage);
 685                         GET_CACHE_DATA(msginfo->to, memusage);
 686                         GET_CACHE_DATA(msginfo->cc, memusage);
 687                         GET_CACHE_DATA(msginfo->newsgroups, memusage);
 688                         GET_CACHE_DATA(msginfo->subject, memusage);
 689                         GET_CACHE_DATA(msginfo->msgid, memusage);
 690                         GET_CACHE_DATA(msginfo->inreplyto, memusage);
 691                         GET_CACHE_DATA(msginfo->xref, memusage);
 692
 693                         GET_CACHE_DATA_INT(msginfo->planned_download);
 694                         GET_CACHE_DATA_INT(msginfo->total_size);
 695                         GET_CACHE_DATA_INT(refnum);
 696
 697                         for (; refnum != 0; refnum--) {
 698                                 ref = NULL;
 699
 700                                 GET_CACHE_DATA(ref, memusage);
 701
 702                                 if (ref && *ref)
 703                                         msginfo->references =
 704                                                 g_slist_prepend(msginfo->references, ref);
 705                         }
 706                         if (msginfo->references)
 707                                 msginfo->references =
 708                                         g_slist_reverse(msginfo->references);
 709
 710                         msginfo->folder = item;
 711                         msginfo->flags.tmp_flags |= tmp_flags;
 712
 713                         g_hash_table_insert(cache->msgnum_table, &msginfo->msgnum, msginfo);
 714                         if(msginfo->msgid)
 715                                 g_hash_table_insert(cache->msgid_table, msginfo->msgid, msginfo);
 716                 }
 717         } else {
 718                 while (fread(&num, sizeof(num), 1, fp) == 1) {
 719                         if (swapping)
 720                                 num = bswap_32(num);
 721
 722                         msginfo = procmsg_msginfo_new();
 723                         msginfo->msgnum = num;
 724                         memusage += sizeof(MsgInfo);
 725
 726                         READ_CACHE_DATA_INT(msginfo->size, fp);
 727                         READ_CACHE_DATA_INT(msginfo->mtime, fp);
 728                         READ_CACHE_DATA_INT(msginfo->date_t, fp);
 729                         READ_CACHE_DATA_INT(msginfo->flags.tmp_flags, fp);
 730
 731                         READ_CACHE_DATA(msginfo->fromname, fp, memusage);
 732
 733                         READ_CACHE_DATA(msginfo->date, fp, memusage);
 734                         READ_CACHE_DATA(msginfo->from, fp, memusage);
 735                         READ_CACHE_DATA(msginfo->to, fp, memusage);
 736                         READ_CACHE_DATA(msginfo->cc, fp, memusage);
 737                         READ_CACHE_DATA(msginfo->newsgroups, fp, memusage);
 738                         READ_CACHE_DATA(msginfo->subject, fp, memusage);
 739                         READ_CACHE_DATA(msginfo->msgid, fp, memusage);
 740                         READ_CACHE_DATA(msginfo->inreplyto, fp, memusage);
 741                         READ_CACHE_DATA(msginfo->xref, fp, memusage);
 742
 743                         READ_CACHE_DATA_INT(msginfo->planned_download, fp);
 744                         READ_CACHE_DATA_INT(msginfo->total_size, fp);
 745                         READ_CACHE_DATA_INT(refnum, fp);
 746
 747                         for (; refnum != 0; refnum--) {
 748                                 ref = NULL;
 749
 750                                 READ_CACHE_DATA(ref, fp, memusage);
 751
 752                                 if (ref && *ref)
 753                                         msginfo->references =
 754                                                 g_slist_prepend(msginfo->references, ref);
 755                         }
 756                         if (msginfo->references)
 757                                 msginfo->references =
 758                                         g_slist_reverse(msginfo->references);
 759
 760                         msginfo->folder = item;
 761                         msginfo->flags.tmp_flags |= tmp_flags;
 762
 763                         g_hash_table_insert(cache->msgnum_table, &msginfo->msgnum, msginfo);
 764                         if(msginfo->msgid)
 765                                 g_hash_table_insert(cache->msgid_table, msginfo->msgid, msginfo);
 766                 }
 767         }
 768 bail_err:
 769         if (cache_data != NULL && cache_data != MAP_FAILED) {
 770 #ifdef G_OS_WIN32
 771                 UnmapViewOfFile((void*) cache_data);
 772 #else
 773                 munmap(cache_data, map_len);
 774 #endif
 775         }
 776         fclose(fp);
 777         if (conv != NULL) {
 778                 if (conv->free != NULL)
 779                         conv->free(conv);
 780                 g_free(conv);
 781         }
 782
 783         if(error) {
 784                 msgcache_destroy(cache);
 785                 return NULL;
 786         }
 787
 788         cache->last_access = time(NULL);
 789         cache->memusage = memusage;
 790
 791         debug_print("done. (%d items read)\n", g_hash_table_size(cache->msgnum_table));
 792         debug_print("Cache size: %d messages, %u bytes\n", g_hash_table_size(cache->msgnum_table), cache->memusage);
 793
 794         return cache;
 795 }
 796
 797 void msgcache_read_mark(MsgCache *cache, const gchar *mark_file)
 798 {
 799         FILE *fp;
 800         MsgInfo *msginfo;
 801         MsgPermFlags perm_flags;
 802         guint32 num;
 803         gint map_len = -1;
 804         char *cache_data = NULL;
 805         struct stat st;
 806         gboolean error = FALSE;
 807
 808         swapping = TRUE;
 809
 810         /* In case we can't open the mark file with MARK_VERSION, check if we can open it with the
 811          * swapped MARK_VERSION. As msgcache_open_data_file swaps it too, if this succeeds,
 812          * it means it's the old version (not little-endian) on a big-endian machine. The code has
 813          * no effect on x86 as their file doesn't change. */
 814
 815         if ((fp = msgcache_open_data_file(mark_file, MARK_VERSION, DATA_READ, NULL, 0)) == NULL) {
 816                 /* see if it isn't swapped ? */
 817                 if ((fp = msgcache_open_data_file(mark_file, bswap_32(MARK_VERSION), DATA_READ, NULL, 0)) == NULL)
 818                         return;
 819                 else
 820                         swapping = FALSE; /* yay */
 821         }
 822         debug_print("reading %sswapped mark file.\n", swapping?"":"un");
 823
 824         if (msgcache_use_mmap_read) {
 825                 if (fstat(fileno(fp), &st) >= 0)
 826                         map_len = st.st_size;
 827                 else
 828                         map_len = -1;
 829                 if (map_len > 0) {
 830 #ifdef G_OS_WIN32
 831                         cache_data = NULL;
 832                         HANDLE hFile, hMapping;
 833                         hFile = (HANDLE) _get_osfhandle (fileno(fp));
 834                         if (hFile == (HANDLE) -1)
 835                                 goto w32_fail2;
 836                         hMapping = CreateFileMapping(hFile, NULL, PAGE_WRITECOPY, 0, 0, NULL);
 837                         if (!hMapping)
 838                                 goto w32_fail2;
 839                         cache_data = (unsigned char *)MapViewOfFile(hMapping, FILE_MAP_COPY, 0, 0, 0);
 840                         CloseHandle (hMapping);
 841                 w32_fail2:
 842                         ;
 843 #else
 844                         cache_data = mmap(NULL, map_len, PROT_READ, MAP_PRIVATE, fileno(fp), 0);
 845 #endif
 846                 }
 847         } else {
 848                 cache_data = NULL;
 849         }
 850         if (cache_data != NULL && cache_data != MAP_FAILED) {
 851                 int rem_len = map_len-ftell(fp);
 852                 char *walk_data = cache_data+ftell(fp);
 853
 854                 while(rem_len > 0) {
 855                         GET_CACHE_DATA_INT(num);
 856                         GET_CACHE_DATA_INT(perm_flags);
 857                         msginfo = g_hash_table_lookup(cache->msgnum_table, &num);
 858                         if(msginfo) {
 859                                 msginfo->flags.perm_flags = perm_flags;
 860                         }
 861                 }
 862         } else {
 863                 while (fread(&num, sizeof(num), 1, fp) == 1) {
 864                         if (swapping)
 865                                 num = bswap_32(num);
 866                         if (fread(&perm_flags, sizeof(perm_flags), 1, fp) != 1) {
 867                                 error = TRUE;
 868                                 break;
 869                         }
 870                         if (swapping)
 871                                 perm_flags = bswap_32(perm_flags);
 872                         msginfo = g_hash_table_lookup(cache->msgnum_table, &num);
 873                         if(msginfo) {
 874                                 msginfo->flags.perm_flags = perm_flags;
 875                         }
 876                 }
 877         }
 878 bail_err:
 879         if (cache_data != NULL && cache_data != MAP_FAILED) {
 880 #ifdef G_OS_WIN32
 881                 UnmapViewOfFile((void*) cache_data);
 882 #else
 883                 munmap(cache_data, map_len);
 884 #endif
 885         }
 886         fclose(fp);
 887         if (error) {
 888                 debug_print("error reading cache mark from %s\n", mark_file);
 889         }
 890 }
 891
 892 void msgcache_read_tags(MsgCache *cache, const gchar *tags_file)
 893 {
 894         FILE *fp;
 895         MsgInfo *msginfo;
 896         guint32 num;
 897         gint map_len = -1;
 898         char *cache_data = NULL;
 899         struct stat st;
 900         gboolean error = FALSE;
 901
 902         swapping = TRUE;
 903
 904         /* In case we can't open the mark file with MARK_VERSION, check if we can open it with the
 905          * swapped MARK_VERSION. As msgcache_open_data_file swaps it too, if this succeeds,
 906          * it means it's the old version (not little-endian) on a big-endian machine. The code has
 907          * no effect on x86 as their file doesn't change. */
 908
 909         if ((fp = msgcache_open_data_file(tags_file, TAGS_VERSION, DATA_READ, NULL, 0)) == NULL) {
 910                 /* see if it isn't swapped ? */
 911                 if ((fp = msgcache_open_data_file(tags_file, bswap_32(TAGS_VERSION), DATA_READ, NULL, 0)) == NULL)
 912                         return;
 913                 else
 914                         swapping = FALSE; /* yay */
 915         }
 916         debug_print("reading %sswapped tags file.\n", swapping?"":"un");
 917
 918         if (msgcache_use_mmap_read) {
 919                 if (fstat(fileno(fp), &st) >= 0)
 920                         map_len = st.st_size;
 921                 else
 922                         map_len = -1;
 923                 if (map_len > 0) {
 924 #ifdef G_OS_WIN32
 925                         cache_data = NULL;
 926                         HANDLE hFile, hMapping;
 927                         hFile = (HANDLE) _get_osfhandle (fileno(fp));
 928                         if (hFile == (HANDLE) -1)
 929                                 goto w32_fail6;
 930                         hMapping = CreateFileMapping(hFile, NULL, PAGE_WRITECOPY, 0, 0, NULL);
 931                         if (!hMapping)
 932                                 goto w32_fail6;
 933                         cache_data = (unsigned char *)MapViewOfFile(hMapping, FILE_MAP_COPY, 0, 0, 0);
 934                         CloseHandle (hMapping);
 935                 w32_fail6:
 936                         ;
 937 #else
 938                         cache_data = mmap(NULL, map_len, PROT_READ, MAP_PRIVATE, fileno(fp), 0);
 939 #endif
 940                 }
 941         } else {
 942                 cache_data = NULL;
 943         }
 944         if (cache_data != NULL && cache_data != MAP_FAILED) {
 945                 int rem_len = map_len-ftell(fp);
 946                 char *walk_data = cache_data+ftell(fp);
 947
 948                 while(rem_len > 0) {
 949                         gint id = -1;
 950                         GET_CACHE_DATA_INT(num);
 951                         msginfo = g_hash_table_lookup(cache->msgnum_table, &num);
 952                         if(msginfo) {
 953                                 g_slist_free(msginfo->tags);
 954                                 msginfo->tags = NULL;
 955                                 do {
 956                                         GET_CACHE_DATA_INT(id);
 957                                         if (id > 0) {
 958                                                 msginfo->tags = g_slist_prepend(
 959                                                         msginfo->tags,
 960                                                         GINT_TO_POINTER(id));
 961                                         }
 962                                 } while (id > 0);
 963                                 msginfo->tags = g_slist_reverse(msginfo->tags);
 964                         }
 965                 }
 966         } else {
 967                 while (fread(&num, sizeof(num), 1, fp) == 1) {
 968                         gint id = -1;
 969                         if (swapping)
 970                                 num = bswap_32(num);
 971                         msginfo = g_hash_table_lookup(cache->msgnum_table, &num);
 972                         if(msginfo) {
 973                                 g_slist_free(msginfo->tags);
 974                                 msginfo->tags = NULL;
 975                                 do {
 976                                         if (fread(&id, sizeof(id), 1, fp) != 1)
 977                                                 id = -1;
 978                                         if (swapping)
 979                                                 id = bswap_32(id);
 980                                         if (id > 0) {
 981                                                 msginfo->tags = g_slist_prepend(
 982                                                         msginfo->tags,
 983                                                         GINT_TO_POINTER(id));
 984                                         }
 985                                 } while (id > 0);
 986                                 msginfo->tags = g_slist_reverse(msginfo->tags);
 987                         }
 988                 }
 989         }
 990 bail_err:
 991         if (cache_data != NULL && cache_data != MAP_FAILED) {
 992 #ifdef G_OS_WIN32
 993                 UnmapViewOfFile((void*) cache_data);
 994 #else
 995                 munmap(cache_data, map_len);
 996 #endif
 997         }
 998         fclose(fp);
 999         if (error) {
1000                 debug_print("error reading cache tags from %s\n", tags_file);
1001         }
1002 }
1003
1004 static int msgcache_write_cache(MsgInfo *msginfo, FILE *fp)
1005 {
1006         MsgTmpFlags flags = msginfo->flags.tmp_flags & MSG_CACHED_FLAG_MASK;
1007         GSList *cur;
1008         int w_err = 0, wrote = 0;
1009
1010         WRITE_CACHE_DATA_INT(msginfo->msgnum, fp);
1011         WRITE_CACHE_DATA_INT(msginfo->size, fp);
1012         WRITE_CACHE_DATA_INT(msginfo->mtime, fp);
1013         WRITE_CACHE_DATA_INT(msginfo->date_t, fp);
1014         WRITE_CACHE_DATA_INT(flags, fp);
1015
1016         WRITE_CACHE_DATA(msginfo->fromname, fp);
1017
1018         WRITE_CACHE_DATA(msginfo->date, fp);
1019         WRITE_CACHE_DATA(msginfo->from, fp);
1020         WRITE_CACHE_DATA(msginfo->to, fp);
1021         WRITE_CACHE_DATA(msginfo->cc, fp);
1022         WRITE_CACHE_DATA(msginfo->newsgroups, fp);
1023         WRITE_CACHE_DATA(msginfo->subject, fp);
1024         WRITE_CACHE_DATA(msginfo->msgid, fp);
1025         WRITE_CACHE_DATA(msginfo->inreplyto, fp);
1026         WRITE_CACHE_DATA(msginfo->xref, fp);
1027         WRITE_CACHE_DATA_INT(msginfo->planned_download, fp);
1028         WRITE_CACHE_DATA_INT(msginfo->total_size, fp);
1029
1030         WRITE_CACHE_DATA_INT(g_slist_length(msginfo->references), fp);
1031
1032         for (cur = msginfo->references; cur != NULL; cur = cur->next) {
1033                 WRITE_CACHE_DATA((gchar *)cur->data, fp);
1034         }
1035         return w_err ? -1 : wrote;
1036 }
1037
1038 static int msgcache_write_flags(MsgInfo *msginfo, FILE *fp)
1039 {
1040         MsgPermFlags flags = msginfo->flags.perm_flags;
1041         int w_err = 0, wrote = 0;
1042         WRITE_CACHE_DATA_INT(msginfo->msgnum, fp);
1043         WRITE_CACHE_DATA_INT(flags, fp);
1044         return w_err ? -1 : wrote;
1045 }
1046
1047 static int msgcache_write_tags(MsgInfo *msginfo, FILE *fp)
1048 {
1049         GSList *cur = msginfo->tags;
1050         int w_err = 0, wrote = 0;
1051
1052         WRITE_CACHE_DATA_INT(msginfo->msgnum, fp);
1053         for (; cur; cur = cur->next) {
1054                 gint id = GPOINTER_TO_INT(cur->data);
1055                 if (tags_get_tag(id) != NULL) {
1056                         WRITE_CACHE_DATA_INT(id, fp);
1057                 }
1058         }
1059         WRITE_CACHE_DATA_INT(-1, fp);
1060
1061         return w_err ? -1 : wrote;
1062 }
1063
1064 struct write_fps
1065 {
1066         FILE *cache_fp;
1067         FILE *mark_fp;
1068         FILE *tags_fp;
1069         int error;
1070         guint cache_size;
1071         guint mark_size;
1072         guint tags_size;
1073 };
1074
1075 static void msgcache_write_func(gpointer key, gpointer value, gpointer user_data)
1076 {
1077         MsgInfo *msginfo;
1078         struct write_fps *write_fps;
1079         int tmp;
1080
1081         msginfo = (MsgInfo *)value;
1082         write_fps = user_data;
1083
1084         if (write_fps->cache_fp) {
1085                 tmp = msgcache_write_cache(msginfo, write_fps->cache_fp);
1086                 if (tmp < 0)
1087                         write_fps->error = 1;
1088                 else
1089                         write_fps->cache_size += tmp;
1090         }
1091         if (write_fps->mark_fp) {
1092         tmp= msgcache_write_flags(msginfo, write_fps->mark_fp);
1093                 if (tmp < 0)
1094                         write_fps->error = 1;
1095                 else
1096                         write_fps->mark_size += tmp;
1097                 }
1098         if (write_fps->tags_fp) {
1099                 tmp = msgcache_write_tags(msginfo, write_fps->tags_fp);
1100                 if (tmp < 0)
1101                         write_fps->error = 1;
1102                 else
1103                         write_fps->tags_size += tmp;
1104         }
1105 }
1106
1107 gint msgcache_write(const gchar *cache_file, const gchar *mark_file, const gchar *tags_file, MsgCache *cache)
1108 {
1109         struct write_fps write_fps;
1110         gchar *new_cache, *new_mark, *new_tags;
1111         int w_err = 0, wrote = 0;
1112
1113         START_TIMING("");
1114         cm_return_val_if_fail(cache != NULL, -1);
1115
1116         new_cache = g_strconcat(cache_file, ".new", NULL);
1117         new_mark  = g_strconcat(mark_file, ".new", NULL);
1118         new_tags  = g_strconcat(tags_file, ".new", NULL);
1119
1120         write_fps.error = 0;
1121         write_fps.cache_size = 0;
1122         write_fps.mark_size = 0;
1123         write_fps.tags_size = 0;
1124
1125         /* open files and write headers */
1126
1127         if (cache_file) {
1128                 write_fps.cache_fp = msgcache_open_data_file(new_cache, CACHE_VERSION,
1129                         DATA_WRITE, NULL, 0);
1130                 if (write_fps.cache_fp == NULL) {
1131                         g_free(new_cache);
1132                         g_free(new_mark);
1133                         g_free(new_tags);
1134                         return -1;
1135                 }
1136                 WRITE_CACHE_DATA(CS_UTF_8, write_fps.cache_fp);
1137         } else {
1138                 write_fps.cache_fp = NULL;
1139         }
1140
1141         if (w_err != 0) {
1142                 g_warning("failed to write charset\n");
1143                 if (write_fps.cache_fp)
1144                         fclose(write_fps.cache_fp);
1145                 claws_unlink(new_cache);
1146                 g_free(new_cache);
1147                 g_free(new_mark);
1148                 g_free(new_tags);
1149                 return -1;
1150         }
1151
1152         if (mark_file) {
1153                 write_fps.mark_fp = msgcache_open_data_file(new_mark, MARK_VERSION,
1154                         DATA_WRITE, NULL, 0);
1155                 if (write_fps.mark_fp == NULL) {
1156                         if (write_fps.cache_fp)
1157                                 fclose(write_fps.cache_fp);
1158                         claws_unlink(new_cache);
1159                         g_free(new_cache);
1160                         g_free(new_mark);
1161                         g_free(new_tags);
1162                         return -1;
1163                 }
1164         } else {
1165                 write_fps.mark_fp = NULL;
1166         }
1167
1168         if (tags_file) {
1169                 write_fps.tags_fp = msgcache_open_data_file(new_tags, TAGS_VERSION,
1170                         DATA_WRITE, NULL, 0);
1171                 if (write_fps.tags_fp == NULL) {
1172                         if (write_fps.cache_fp)
1173                                 fclose(write_fps.cache_fp);
1174                         if (write_fps.mark_fp)
1175                                 fclose(write_fps.mark_fp);
1176                         claws_unlink(new_cache);
1177                         claws_unlink(new_mark);
1178                         g_free(new_cache);
1179                         g_free(new_mark);
1180                         g_free(new_tags);
1181                         return -1;
1182                 }
1183         } else {
1184                 write_fps.tags_fp = NULL;
1185         }
1186
1187         debug_print("\tWriting message cache to %s and %s...\n", new_cache, new_mark);
1188
1189         if (write_fps.cache_fp && change_file_mode_rw(write_fps.cache_fp, new_cache) < 0)
1190                 FILE_OP_ERROR(new_cache, "chmod");
1191
1192         /* headers written, note file size */
1193         if (write_fps.cache_fp)
1194                 write_fps.cache_size = ftell(write_fps.cache_fp);
1195         if (write_fps.mark_fp)
1196                 write_fps.mark_size = ftell(write_fps.mark_fp);
1197         if (write_fps.tags_fp)
1198                 write_fps.tags_size = ftell(write_fps.tags_fp);
1199
1200 #ifdef HAVE_FWRITE_UNLOCKED
1201         /* lock files for write once (instead of once per fwrite) */
1202         if (write_fps.cache_fp)
1203                 flockfile(write_fps.cache_fp);
1204         if (write_fps.mark_fp)
1205                 flockfile(write_fps.mark_fp);
1206         if (write_fps.tags_fp)
1207                 flockfile(write_fps.tags_fp);
1208 #endif
1209         /* write data to the files */
1210         g_hash_table_foreach(cache->msgnum_table, msgcache_write_func, (gpointer)&write_fps);
1211 #ifdef HAVE_FWRITE_UNLOCKED
1212         /* unlock files */
1213         if (write_fps.cache_fp)
1214                 funlockfile(write_fps.cache_fp);
1215         if (write_fps.mark_fp)
1216                 funlockfile(write_fps.mark_fp);
1217         if (write_fps.tags_fp)
1218                 funlockfile(write_fps.tags_fp);
1219 #endif
1220         /* flush buffers */
1221         if (write_fps.cache_fp)
1222                 write_fps.error |= (fflush(write_fps.cache_fp) != 0);
1223         if (write_fps.mark_fp)
1224                 write_fps.error |= (fflush(write_fps.mark_fp) != 0);
1225         if (write_fps.tags_fp)
1226                 write_fps.error |= (fflush(write_fps.tags_fp) != 0);
1227
1228         /* sync to filesystem */
1229         if (prefs_common.flush_metadata && write_fps.cache_fp)
1230                 write_fps.error |= (fsync(fileno(write_fps.cache_fp)) != 0);
1231         if (prefs_common.flush_metadata && write_fps.mark_fp)
1232                 write_fps.error |= (fsync(fileno(write_fps.mark_fp)) != 0);
1233         if (prefs_common.flush_metadata && write_fps.tags_fp)
1234                 write_fps.error |= (fsync(fileno(write_fps.tags_fp)) != 0);
1235
1236         /* close files */
1237         if (write_fps.cache_fp)
1238                 write_fps.error |= (fclose(write_fps.cache_fp) != 0);
1239         if (write_fps.mark_fp)
1240                 write_fps.error |= (fclose(write_fps.mark_fp) != 0);
1241         if (write_fps.tags_fp)
1242                 write_fps.error |= (fclose(write_fps.tags_fp) != 0);
1243
1244
1245         if (write_fps.error != 0) {
1246                 /* in case of error, forget all */
1247                 claws_unlink(new_cache);
1248                 claws_unlink(new_mark);
1249                 claws_unlink(new_tags);
1250                 g_free(new_cache);
1251                 g_free(new_mark);
1252                 g_free(new_tags);
1253                 return -1;
1254         } else {
1255                 /* switch files */
1256                 if (cache_file)
1257                         move_file(new_cache, cache_file, TRUE);
1258                 if (mark_file)
1259                         move_file(new_mark, mark_file, TRUE);
1260                 if (tags_file)
1261                         move_file(new_tags, tags_file, TRUE);
1262                 cache->last_access = time(NULL);
1263         }
1264
1265         g_free(new_cache);
1266         g_free(new_mark);
1267         g_free(new_tags);
1268         debug_print("done.\n");
1269         END_TIMING();
1270         return 0;
1271 }
1272