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
 191         msginfo->folder->cache_dirty = TRUE;
 192
 193         procmsg_msginfo_free(msginfo);
 194         cache->last_access = time(NULL);
 195
 196
 197         debug_print("Cache size: %d messages, %u bytes\n", g_hash_table_size(cache->msgnum_table), cache->memusage);
 198 }
 199
 200 void msgcache_update_msg(MsgCache *cache, MsgInfo *msginfo)
 201 {
 202         MsgInfo *oldmsginfo, *newmsginfo;
 203
 204         cm_return_if_fail(cache != NULL);
 205         cm_return_if_fail(msginfo != NULL);
 206
 207         oldmsginfo = g_hash_table_lookup(cache->msgnum_table, &msginfo->msgnum);
 208         if(oldmsginfo && oldmsginfo->msgid)
 209                 g_hash_table_remove(cache->msgid_table, oldmsginfo->msgid);
 210         if (oldmsginfo) {
 211                 g_hash_table_remove(cache->msgnum_table, &oldmsginfo->msgnum);
 212                 cache->memusage -= procmsg_msginfo_memusage(oldmsginfo);
 213                 procmsg_msginfo_free(oldmsginfo);
 214         }
 215
 216         newmsginfo = procmsg_msginfo_new_ref(msginfo);
 217         g_hash_table_insert(cache->msgnum_table, &newmsginfo->msgnum, newmsginfo);
 218         if(newmsginfo->msgid)
 219                 g_hash_table_insert(cache->msgid_table, newmsginfo->msgid, newmsginfo);
 220         cache->memusage += procmsg_msginfo_memusage(newmsginfo);
 221         cache->last_access = time(NULL);
 222
 223         debug_print("Cache size: %d messages, %u bytes\n", g_hash_table_size(cache->msgnum_table), cache->memusage);
 224
 225         msginfo->folder->cache_dirty = TRUE;
 226
 227         return;
 228 }
 229
 230 MsgInfo *msgcache_get_msg(MsgCache *cache, guint num)
 231 {
 232         MsgInfo *msginfo;
 233
 234         cm_return_val_if_fail(cache != NULL, NULL);
 235
 236         msginfo = g_hash_table_lookup(cache->msgnum_table, &num);
 237         if(!msginfo)
 238                 return NULL;
 239         cache->last_access = time(NULL);
 240
 241         return procmsg_msginfo_new_ref(msginfo);
 242 }
 243
 244 MsgInfo *msgcache_get_msg_by_id(MsgCache *cache, const gchar *msgid)
 245 {
 246         MsgInfo *msginfo;
 247
 248         cm_return_val_if_fail(cache != NULL, NULL);
 249         cm_return_val_if_fail(msgid != NULL, NULL);
 250
 251         msginfo = g_hash_table_lookup(cache->msgid_table, msgid);
 252         if(!msginfo)
 253                 return NULL;
 254         cache->last_access = time(NULL);
 255
 256         return procmsg_msginfo_new_ref(msginfo);
 257 }
 258
 259 static void msgcache_get_msg_list_func(gpointer key, gpointer value, gpointer user_data)
 260 {
 261         MsgInfoList **listptr = user_data;
 262         MsgInfo *msginfo = value;
 263
 264         *listptr = g_slist_prepend(*listptr, procmsg_msginfo_new_ref(msginfo));
 265 }
 266
 267 MsgInfoList *msgcache_get_msg_list(MsgCache *cache)
 268 {
 269         MsgInfoList *msg_list = NULL;
 270         START_TIMING("");
 271         cm_return_val_if_fail(cache != NULL, NULL);
 272
 273         g_hash_table_foreach((GHashTable *)cache->msgnum_table, msgcache_get_msg_list_func, (gpointer)&msg_list);
 274         cache->last_access = time(NULL);
 275
 276         msg_list = g_slist_reverse(msg_list);
 277         END_TIMING();
 278         return msg_list;
 279 }
 280
 281 time_t msgcache_get_last_access_time(MsgCache *cache)
 282 {
 283         cm_return_val_if_fail(cache != NULL, 0);
 284
 285         return cache->last_access;
 286 }
 287
 288 gint msgcache_get_memory_usage(MsgCache *cache)
 289 {
 290         cm_return_val_if_fail(cache != NULL, 0);
 291
 292         return cache->memusage;
 293 }
 294
 295 /*
 296  *  Cache saving functions
 297  */
 298
 299 #define READ_CACHE_DATA(data, fp, total_len) \
 300 { \
 301         if ((tmp_len = msgcache_read_cache_data_str(fp, &data, conv)) < 0) { \
 302                 procmsg_msginfo_free(msginfo); \
 303                 error = TRUE; \
 304                 goto bail_err; \
 305         } \
 306         total_len += tmp_len; \
 307 }
 308
 309 #define READ_CACHE_DATA_INT(n, fp) \
 310 { \
 311         guint32 idata; \
 312         size_t ni; \
 313  \
 314         if ((ni = fread(&idata, sizeof(idata), 1, fp)) != 1) { \
 315                 g_warning("read_int: Cache data corrupted, read %zd of %zd at " \
 316                           "offset %ld", ni, sizeof(idata), ftell(fp)); \
 317                 procmsg_msginfo_free(msginfo); \
 318                 error = TRUE; \
 319                 goto bail_err; \
 320         } else \
 321                 n = swapping ? bswap_32(idata) : (idata);\
 322 }
 323
 324 #define GET_CACHE_DATA_INT(n)                                                                   \
 325 {                                                                                               \
 326         if (rem_len < 4) {                                                                      \
 327                 g_print("error at rem_len:%d\n", rem_len);                                      \
 328                 error = TRUE;                                                                   \
 329                 goto bail_err;                                                                  \
 330         }                                                                                       \
 331         n = (swapping ? (MMAP_TO_GUINT32_SWAPPED(walk_data)):(MMAP_TO_GUINT32(walk_data)));     \
 332         walk_data += 4; rem_len -= 4;                                                           \
 333 }
 334
 335 #define GET_CACHE_DATA(data, total_len) \
 336 { \
 337         GET_CACHE_DATA_INT(tmp_len);    \
 338         if (rem_len < tmp_len) {                                                                \
 339                 g_print("error at rem_len:%d (tmp_len %d)\n", rem_len, tmp_len);                \
 340                 error = TRUE;                                                                   \
 341                 goto bail_err;                                                                  \
 342         }                                                                                       \
 343         if ((tmp_len = msgcache_get_cache_data_str(walk_data, &data, tmp_len, conv)) < 0) { \
 344                 g_print("error at rem_len:%d\n", rem_len);\
 345                 procmsg_msginfo_free(msginfo); \
 346                 error = TRUE; \
 347                 goto bail_err; \
 348         } \
 349         total_len += tmp_len; \
 350         walk_data += tmp_len; rem_len -= tmp_len; \
 351 }
 352
 353
 354 #define WRITE_CACHE_DATA_INT(n, fp)                     \
 355 {                                                       \
 356         guint32 idata;                                  \
 357                                                         \
 358         idata = (guint32)bswap_32(n);                   \
 359         if (SC_FWRITE(&idata, sizeof(idata), 1, fp) != 1)       \
 360                 w_err = 1;                              \
 361         wrote += 4;                                     \
 362 }
 363
 364 #define PUT_CACHE_DATA_INT(n)                           \
 365 {                                                       \
 366         walk_data[0]=(((guint32)n)&0x000000ff);                 \
 367         walk_data[1]=(((guint32)n)&0x0000ff00)>>8;              \
 368         walk_data[2]=(((guint32)n)&0x00ff0000)>>16;             \
 369         walk_data[3]=(((guint32)n)&0xff000000)>>24;             \
 370         walk_data += 4;                                 \
 371         wrote += 4;                                     \
 372 }
 373
 374 #define WRITE_CACHE_DATA(data, fp) \
 375 { \
 376         size_t len;                                     \
 377         if (data == NULL)                               \
 378                 len = 0;                                \
 379         else                                            \
 380                 len = strlen(data);                     \
 381         WRITE_CACHE_DATA_INT(len, fp);                  \
 382         if (w_err == 0 && len > 0) {                    \
 383                 if (SC_FWRITE(data, 1, len, fp) != len) \
 384                         w_err = 1;                      \
 385                 wrote += len;                           \
 386         } \
 387 }
 388
 389 #define PUT_CACHE_DATA(data)                            \
 390 {                                                       \
 391         size_t len;                                     \
 392         if (data == NULL)                               \
 393                 len = 0;                                \
 394         else                                            \
 395                 len = strlen(data);                     \
 396         PUT_CACHE_DATA_INT(len);                        \
 397         if (len > 0) {                                  \
 398                 memcpy(walk_data, data, len);           \
 399                 walk_data += len;                       \
 400                 wrote += len;                           \
 401         }                                               \
 402 }
 403
 404 static FILE *msgcache_open_data_file(const gchar *file, guint version,
 405                                      DataOpenMode mode,
 406                                      gchar *buf, size_t buf_size)
 407 {
 408         FILE *fp;
 409         gint32 data_ver;
 410
 411         cm_return_val_if_fail(file != NULL, NULL);
 412
 413         if (mode == DATA_WRITE) {
 414                 int w_err = 0, wrote = 0;
 415                 if ((fp = g_fopen(file, "wb")) == NULL) {
 416                         FILE_OP_ERROR(file, "fopen");
 417                         return NULL;
 418                 }
 419                 if (change_file_mode_rw(fp, file) < 0)
 420                         FILE_OP_ERROR(file, "chmod");
 421
 422                 WRITE_CACHE_DATA_INT(version, fp);
 423                 if (w_err != 0) {
 424                         g_warning("failed to write int");
 425                         fclose(fp);
 426                         return NULL;
 427                 }
 428                 return fp;
 429         }
 430
 431         /* check version */
 432         if ((fp = g_fopen(file, "rb")) == NULL)
 433                 debug_print("Mark/Cache file '%s' not found\n", file);
 434         else {
 435                 if (buf && buf_size > 0)
 436                         setvbuf(fp, buf, _IOFBF, buf_size);
 437                 if (fread(&data_ver, sizeof(data_ver), 1, fp) != 1 ||
 438                          version != bswap_32(data_ver)) {
 439                         g_message("%s: Mark/Cache version is different (%u != %u).\n",
 440                                   file, bswap_32(data_ver), version);
 441                         fclose(fp);
 442                         fp = NULL;
 443                 }
 444                 data_ver = bswap_32(data_ver);
 445         }
 446
 447         if (mode == DATA_READ)
 448                 return fp;
 449
 450         if (fp) {
 451                 /* reopen with append mode */
 452                 fclose(fp);
 453                 if ((fp = g_fopen(file, "ab")) == NULL)
 454                         FILE_OP_ERROR(file, "fopen");
 455         } else {
 456                 /* open with overwrite mode if mark file doesn't exist or
 457                    version is different */
 458                 fp = msgcache_open_data_file(file, version, DATA_WRITE, buf,
 459                                             buf_size);
 460         }
 461
 462         return fp;
 463 }
 464
 465 static gint msgcache_read_cache_data_str(FILE *fp, gchar **str,
 466                                          StringConverter *conv)
 467 {
 468         gchar *tmpstr = NULL;
 469         size_t ni;
 470         guint32 len;
 471
 472         *str = NULL;
 473         if (!swapping) {
 474                 if ((ni = fread(&len, sizeof(len), 1, fp) != 1) ||
 475                     len > G_MAXINT) {
 476                         g_warning("read_data_str: Cache data (len) corrupted, read %zd "
 477                                   "of %zd bytes at offset %ld", ni, sizeof(len),
 478                                   ftell(fp));
 479                         return -1;
 480                 }
 481         } else {
 482                 if ((ni = fread(&len, sizeof(len), 1, fp) != 1) ||
 483                     bswap_32(len) > G_MAXINT) {
 484                         g_warning("read_data_str: Cache data (len) corrupted, read %zd "
 485                                   "of %zd bytes at offset %ld", ni, sizeof(len),
 486                                   ftell(fp));
 487                         return -1;
 488                 }
 489                 len = bswap_32(len);
 490         }
 491
 492         if (len == 0)
 493                 return 0;
 494
 495         tmpstr = g_try_malloc(len + 1);
 496
 497         if(tmpstr == NULL) {
 498                 return -1;
 499         }
 500
 501         if ((ni = fread(tmpstr, 1, len, fp)) != len) {
 502                 g_warning("read_data_str: Cache data corrupted, read %zd of %u "
 503                           "bytes at offset %ld",
 504                           ni, len, ftell(fp));
 505                 g_free(tmpstr);
 506                 return -1;
 507         }
 508         tmpstr[len] = 0;
 509
 510         if (conv != NULL) {
 511                 *str = conv->convert(conv, tmpstr);
 512                 g_free(tmpstr);
 513         } else
 514                 *str = tmpstr;
 515
 516         return len;
 517 }
 518
 519 static gint msgcache_get_cache_data_str(gchar *src, gchar **str, gint len,
 520                                          StringConverter *conv)
 521 {
 522         gchar *tmpstr = NULL;
 523
 524         *str = NULL;
 525
 526         if (len == 0)
 527                 return 0;
 528
 529         if(len > 2*1024*1024) {
 530                 g_warning("read_data_str: refusing to allocate %d bytes.", len);
 531                 return -1;
 532         }
 533
 534         tmpstr = g_try_malloc(len + 1);
 535
 536         if(tmpstr == NULL) {
 537                 return -1;
 538         }
 539
 540         memcpy(tmpstr, src, len);
 541         tmpstr[len] = 0;
 542
 543         if (conv != NULL) {
 544                 *str = conv->convert(conv, tmpstr);
 545                 g_free(tmpstr);
 546         } else
 547                 *str = tmpstr;
 548
 549         return len;
 550 }
 551
 552 static gchar *strconv_charset_convert(StringConverter *conv, gchar *srcstr)
 553 {
 554         CharsetConverter *charsetconv = (CharsetConverter *) conv;
 555
 556         return conv_codeset_strdup(srcstr, charsetconv->srccharset, charsetconv->dstcharset);
 557 }
 558
 559 static void strconv_charset_free(StringConverter *conv)
 560 {
 561         CharsetConverter *charsetconv = (CharsetConverter *) conv;
 562
 563         g_free(charsetconv->srccharset);
 564         g_free(charsetconv->dstcharset);
 565 }
 566
 567 MsgCache *msgcache_read_cache(FolderItem *item, const gchar *cache_file)
 568 {
 569         MsgCache *cache;
 570         FILE *fp;
 571         MsgInfo *msginfo;
 572         MsgTmpFlags tmp_flags = 0;
 573         gchar file_buf[BUFFSIZE];
 574         guint32 num;
 575         guint refnum;
 576         gboolean error = FALSE;
 577         StringConverter *conv = NULL;
 578         gchar *srccharset = NULL;
 579         const gchar *dstcharset = NULL;
 580         gchar *ref = NULL;
 581         guint memusage = 0;
 582         gint tmp_len = 0, map_len = -1;
 583         char *cache_data = NULL;
 584         struct stat st;
 585
 586         cm_return_val_if_fail(cache_file != NULL, NULL);
 587         cm_return_val_if_fail(item != NULL, NULL);
 588
 589         swapping = TRUE;
 590
 591         /* In case we can't open the mark file with MARK_VERSION, check if we can open it with the
 592          * swapped MARK_VERSION. As msgcache_open_data_file swaps it too, if this succeeds,
 593          * it means it's the old version (not little-endian) on a big-endian machine. The code has
 594          * no effect on x86 as their file doesn't change. */
 595
 596         if ((fp = msgcache_open_data_file
 597                 (cache_file, CACHE_VERSION, DATA_READ, file_buf, sizeof(file_buf))) == NULL) {
 598                 if ((fp = msgcache_open_data_file
 599                 (cache_file, bswap_32(CACHE_VERSION), DATA_READ, file_buf, sizeof(file_buf))) == NULL)
 600                         return NULL;
 601                 else
 602                         swapping = FALSE;
 603         }
 604
 605         debug_print("\tReading %sswapped message cache from %s...\n", swapping?"":"un", cache_file);
 606
 607         if (folder_has_parent_of_type(item, F_QUEUE)) {
 608                 tmp_flags |= MSG_QUEUED;
 609         } else if (folder_has_parent_of_type(item, F_DRAFT)) {
 610                 tmp_flags |= MSG_DRAFT;
 611         }
 612
 613         if (msgcache_read_cache_data_str(fp, &srccharset, NULL) < 0) {
 614                 fclose(fp);
 615                 return NULL;
 616         }
 617         dstcharset = CS_UTF_8;
 618         if (srccharset == NULL || dstcharset == NULL) {
 619                 conv = NULL;
 620         } else if (strcmp(srccharset, dstcharset) == 0) {
 621                 debug_print("using Noop Converter\n");
 622
 623                 conv = NULL;
 624         } else {
 625                 CharsetConverter *charsetconv;
 626
 627                 debug_print("using CharsetConverter\n");
 628
 629                 charsetconv = g_new0(CharsetConverter, 1);
 630                 charsetconv->converter.convert = strconv_charset_convert;
 631                 charsetconv->converter.free = strconv_charset_free;
 632                 charsetconv->srccharset = g_strdup(srccharset);
 633                 charsetconv->dstcharset = g_strdup(dstcharset);
 634
 635                 conv = (StringConverter *) charsetconv;
 636         }
 637         g_free(srccharset);
 638
 639         cache = msgcache_new();
 640
 641         if (msgcache_use_mmap_read == TRUE) {
 642                 if (fstat(fileno(fp), &st) >= 0)
 643                         map_len = st.st_size;
 644                 else
 645                         map_len = -1;
 646                 if (map_len > 0) {
 647 #ifdef G_OS_WIN32
 648                         cache_data = NULL;
 649                         HANDLE hFile, hMapping;
 650                         hFile = (HANDLE) _get_osfhandle (fileno(fp));
 651                         if (hFile == (HANDLE) -1)
 652                                 goto w32_fail;
 653                         hMapping = CreateFileMapping(hFile, NULL, PAGE_WRITECOPY, 0, 0, NULL);
 654                         if (!hMapping)
 655                                 goto w32_fail;
 656                         cache_data = (unsigned char *)MapViewOfFile(hMapping, FILE_MAP_COPY, 0, 0, 0);
 657                         CloseHandle (hMapping);
 658                 w32_fail:
 659                         ;
 660 #else
 661                         cache_data = mmap(NULL, map_len, PROT_READ, MAP_PRIVATE, fileno(fp), 0);
 662 #endif
 663                 }
 664         } else {
 665                 cache_data = NULL;
 666         }
 667         if (cache_data != NULL && cache_data != MAP_FAILED) {
 668                 int rem_len = map_len-ftell(fp);
 669                 char *walk_data = cache_data+ftell(fp);
 670
 671                 while(rem_len > 0) {
 672                         GET_CACHE_DATA_INT(num);
 673
 674                         msginfo = procmsg_msginfo_new();
 675                         msginfo->msgnum = num;
 676                         memusage += sizeof(MsgInfo);
 677
 678                         GET_CACHE_DATA_INT(msginfo->size);
 679                         GET_CACHE_DATA_INT(msginfo->mtime);
 680                         GET_CACHE_DATA_INT(msginfo->date_t);
 681                         GET_CACHE_DATA_INT(msginfo->flags.tmp_flags);
 682
 683                         GET_CACHE_DATA(msginfo->fromname, memusage);
 684
 685                         GET_CACHE_DATA(msginfo->date, memusage);
 686                         GET_CACHE_DATA(msginfo->from, memusage);
 687                         GET_CACHE_DATA(msginfo->to, memusage);
 688                         GET_CACHE_DATA(msginfo->cc, memusage);
 689                         GET_CACHE_DATA(msginfo->newsgroups, memusage);
 690                         GET_CACHE_DATA(msginfo->subject, memusage);
 691                         GET_CACHE_DATA(msginfo->msgid, memusage);
 692                         GET_CACHE_DATA(msginfo->inreplyto, memusage);
 693                         GET_CACHE_DATA(msginfo->xref, memusage);
 694
 695                         GET_CACHE_DATA_INT(msginfo->planned_download);
 696                         GET_CACHE_DATA_INT(msginfo->total_size);
 697                         GET_CACHE_DATA_INT(refnum);
 698
 699                         for (; refnum != 0; refnum--) {
 700                                 ref = NULL;
 701
 702                                 GET_CACHE_DATA(ref, memusage);
 703
 704                                 if (ref && *ref)
 705                                         msginfo->references =
 706                                                 g_slist_prepend(msginfo->references, ref);
 707                         }
 708                         if (msginfo->references)
 709                                 msginfo->references =
 710                                         g_slist_reverse(msginfo->references);
 711
 712                         msginfo->folder = item;
 713                         msginfo->flags.tmp_flags |= tmp_flags;
 714
 715                         g_hash_table_insert(cache->msgnum_table, &msginfo->msgnum, msginfo);
 716                         if(msginfo->msgid)
 717                                 g_hash_table_insert(cache->msgid_table, msginfo->msgid, msginfo);
 718                 }
 719         } else {
 720                 while (fread(&num, sizeof(num), 1, fp) == 1) {
 721                         if (swapping)
 722                                 num = bswap_32(num);
 723
 724                         msginfo = procmsg_msginfo_new();
 725                         msginfo->msgnum = num;
 726                         memusage += sizeof(MsgInfo);
 727
 728                         READ_CACHE_DATA_INT(msginfo->size, fp);
 729                         READ_CACHE_DATA_INT(msginfo->mtime, fp);
 730                         READ_CACHE_DATA_INT(msginfo->date_t, fp);
 731                         READ_CACHE_DATA_INT(msginfo->flags.tmp_flags, fp);
 732
 733                         READ_CACHE_DATA(msginfo->fromname, fp, memusage);
 734
 735                         READ_CACHE_DATA(msginfo->date, fp, memusage);
 736                         READ_CACHE_DATA(msginfo->from, fp, memusage);
 737                         READ_CACHE_DATA(msginfo->to, fp, memusage);
 738                         READ_CACHE_DATA(msginfo->cc, fp, memusage);
 739                         READ_CACHE_DATA(msginfo->newsgroups, fp, memusage);
 740                         READ_CACHE_DATA(msginfo->subject, fp, memusage);
 741                         READ_CACHE_DATA(msginfo->msgid, fp, memusage);
 742                         READ_CACHE_DATA(msginfo->inreplyto, fp, memusage);
 743                         READ_CACHE_DATA(msginfo->xref, fp, memusage);
 744
 745                         READ_CACHE_DATA_INT(msginfo->planned_download, fp);
 746                         READ_CACHE_DATA_INT(msginfo->total_size, fp);
 747                         READ_CACHE_DATA_INT(refnum, fp);
 748
 749                         for (; refnum != 0; refnum--) {
 750                                 ref = NULL;
 751
 752                                 READ_CACHE_DATA(ref, fp, memusage);
 753
 754                                 if (ref && *ref)
 755                                         msginfo->references =
 756                                                 g_slist_prepend(msginfo->references, ref);
 757                         }
 758                         if (msginfo->references)
 759                                 msginfo->references =
 760                                         g_slist_reverse(msginfo->references);
 761
 762                         msginfo->folder = item;
 763                         msginfo->flags.tmp_flags |= tmp_flags;
 764
 765                         g_hash_table_insert(cache->msgnum_table, &msginfo->msgnum, msginfo);
 766                         if(msginfo->msgid)
 767                                 g_hash_table_insert(cache->msgid_table, msginfo->msgid, msginfo);
 768                 }
 769         }
 770 bail_err:
 771         if (cache_data != NULL && cache_data != MAP_FAILED) {
 772 #ifdef G_OS_WIN32
 773                 UnmapViewOfFile((void*) cache_data);
 774 #else
 775                 munmap(cache_data, map_len);
 776 #endif
 777         }
 778         fclose(fp);
 779         if (conv != NULL) {
 780                 if (conv->free != NULL)
 781                         conv->free(conv);
 782                 g_free(conv);
 783         }
 784
 785         if(error) {
 786                 msgcache_destroy(cache);
 787                 return NULL;
 788         }
 789
 790         cache->last_access = time(NULL);
 791         cache->memusage = memusage;
 792
 793         debug_print("done. (%d items read)\n", g_hash_table_size(cache->msgnum_table));
 794         debug_print("Cache size: %d messages, %u bytes\n", g_hash_table_size(cache->msgnum_table), cache->memusage);
 795
 796         return cache;
 797 }
 798
 799 void msgcache_read_mark(MsgCache *cache, const gchar *mark_file)
 800 {
 801         FILE *fp;
 802         MsgInfo *msginfo;
 803         MsgPermFlags perm_flags;
 804         guint32 num;
 805         gint map_len = -1;
 806         char *cache_data = NULL;
 807         struct stat st;
 808         gboolean error = FALSE;
 809
 810         swapping = TRUE;
 811
 812         /* In case we can't open the mark file with MARK_VERSION, check if we can open it with the
 813          * swapped MARK_VERSION. As msgcache_open_data_file swaps it too, if this succeeds,
 814          * it means it's the old version (not little-endian) on a big-endian machine. The code has
 815          * no effect on x86 as their file doesn't change. */
 816
 817         if ((fp = msgcache_open_data_file(mark_file, MARK_VERSION, DATA_READ, NULL, 0)) == NULL) {
 818                 /* see if it isn't swapped ? */
 819                 if ((fp = msgcache_open_data_file(mark_file, bswap_32(MARK_VERSION), DATA_READ, NULL, 0)) == NULL)
 820                         return;
 821                 else
 822                         swapping = FALSE; /* yay */
 823         }
 824         debug_print("reading %sswapped mark file.\n", swapping?"":"un");
 825
 826         if (msgcache_use_mmap_read) {
 827                 if (fstat(fileno(fp), &st) >= 0)
 828                         map_len = st.st_size;
 829                 else
 830                         map_len = -1;
 831                 if (map_len > 0) {
 832 #ifdef G_OS_WIN32
 833                         cache_data = NULL;
 834                         HANDLE hFile, hMapping;
 835                         hFile = (HANDLE) _get_osfhandle (fileno(fp));
 836                         if (hFile == (HANDLE) -1)
 837                                 goto w32_fail2;
 838                         hMapping = CreateFileMapping(hFile, NULL, PAGE_WRITECOPY, 0, 0, NULL);
 839                         if (!hMapping)
 840                                 goto w32_fail2;
 841                         cache_data = (unsigned char *)MapViewOfFile(hMapping, FILE_MAP_COPY, 0, 0, 0);
 842                         CloseHandle (hMapping);
 843                 w32_fail2:
 844                         ;
 845 #else
 846                         cache_data = mmap(NULL, map_len, PROT_READ, MAP_PRIVATE, fileno(fp), 0);
 847 #endif
 848                 }
 849         } else {
 850                 cache_data = NULL;
 851         }
 852         if (cache_data != NULL && cache_data != MAP_FAILED) {
 853                 int rem_len = map_len-ftell(fp);
 854                 char *walk_data = cache_data+ftell(fp);
 855
 856                 while(rem_len > 0) {
 857                         GET_CACHE_DATA_INT(num);
 858                         GET_CACHE_DATA_INT(perm_flags);
 859                         msginfo = g_hash_table_lookup(cache->msgnum_table, &num);
 860                         if(msginfo) {
 861                                 msginfo->flags.perm_flags = perm_flags;
 862                         }
 863                 }
 864         } else {
 865                 while (fread(&num, sizeof(num), 1, fp) == 1) {
 866                         if (swapping)
 867                                 num = bswap_32(num);
 868                         if (fread(&perm_flags, sizeof(perm_flags), 1, fp) != 1) {
 869                                 error = TRUE;
 870                                 break;
 871                         }
 872                         if (swapping)
 873                                 perm_flags = bswap_32(perm_flags);
 874                         msginfo = g_hash_table_lookup(cache->msgnum_table, &num);
 875                         if(msginfo) {
 876                                 msginfo->flags.perm_flags = perm_flags;
 877                         }
 878                 }
 879         }
 880 bail_err:
 881         if (cache_data != NULL && cache_data != MAP_FAILED) {
 882 #ifdef G_OS_WIN32
 883                 UnmapViewOfFile((void*) cache_data);
 884 #else
 885                 munmap(cache_data, map_len);
 886 #endif
 887         }
 888         fclose(fp);
 889         if (error) {
 890                 debug_print("error reading cache mark from %s\n", mark_file);
 891         }
 892 }
 893
 894 void msgcache_read_tags(MsgCache *cache, const gchar *tags_file)
 895 {
 896         FILE *fp;
 897         MsgInfo *msginfo;
 898         guint32 num;
 899         gint map_len = -1;
 900         char *cache_data = NULL;
 901         struct stat st;
 902         gboolean error = FALSE;
 903
 904         swapping = TRUE;
 905
 906         /* In case we can't open the mark file with MARK_VERSION, check if we can open it with the
 907          * swapped MARK_VERSION. As msgcache_open_data_file swaps it too, if this succeeds,
 908          * it means it's the old version (not little-endian) on a big-endian machine. The code has
 909          * no effect on x86 as their file doesn't change. */
 910
 911         if ((fp = msgcache_open_data_file(tags_file, TAGS_VERSION, DATA_READ, NULL, 0)) == NULL) {
 912                 /* see if it isn't swapped ? */
 913                 if ((fp = msgcache_open_data_file(tags_file, bswap_32(TAGS_VERSION), DATA_READ, NULL, 0)) == NULL)
 914                         return;
 915                 else
 916                         swapping = FALSE; /* yay */
 917         }
 918         debug_print("reading %sswapped tags file.\n", swapping?"":"un");
 919
 920         if (msgcache_use_mmap_read) {
 921                 if (fstat(fileno(fp), &st) >= 0)
 922                         map_len = st.st_size;
 923                 else
 924                         map_len = -1;
 925                 if (map_len > 0) {
 926 #ifdef G_OS_WIN32
 927                         cache_data = NULL;
 928                         HANDLE hFile, hMapping;
 929                         hFile = (HANDLE) _get_osfhandle (fileno(fp));
 930                         if (hFile == (HANDLE) -1)
 931                                 goto w32_fail6;
 932                         hMapping = CreateFileMapping(hFile, NULL, PAGE_WRITECOPY, 0, 0, NULL);
 933                         if (!hMapping)
 934                                 goto w32_fail6;
 935                         cache_data = (unsigned char *)MapViewOfFile(hMapping, FILE_MAP_COPY, 0, 0, 0);
 936                         CloseHandle (hMapping);
 937                 w32_fail6:
 938                         ;
 939 #else
 940                         cache_data = mmap(NULL, map_len, PROT_READ, MAP_PRIVATE, fileno(fp), 0);
 941 #endif
 942                 }
 943         } else {
 944                 cache_data = NULL;
 945         }
 946         if (cache_data != NULL && cache_data != MAP_FAILED) {
 947                 int rem_len = map_len-ftell(fp);
 948                 char *walk_data = cache_data+ftell(fp);
 949
 950                 while(rem_len > 0) {
 951                         gint id = -1;
 952                         GET_CACHE_DATA_INT(num);
 953                         msginfo = g_hash_table_lookup(cache->msgnum_table, &num);
 954                         if(msginfo) {
 955                                 g_slist_free(msginfo->tags);
 956                                 msginfo->tags = NULL;
 957                                 do {
 958                                         GET_CACHE_DATA_INT(id);
 959                                         if (id > 0) {
 960                                                 msginfo->tags = g_slist_prepend(
 961                                                         msginfo->tags,
 962                                                         GINT_TO_POINTER(id));
 963                                         }
 964                                 } while (id > 0);
 965                                 msginfo->tags = g_slist_reverse(msginfo->tags);
 966                         }
 967                 }
 968         } else {
 969                 while (fread(&num, sizeof(num), 1, fp) == 1) {
 970                         gint id = -1;
 971                         if (swapping)
 972                                 num = bswap_32(num);
 973                         msginfo = g_hash_table_lookup(cache->msgnum_table, &num);
 974                         if(msginfo) {
 975                                 g_slist_free(msginfo->tags);
 976                                 msginfo->tags = NULL;
 977                                 do {
 978                                         if (fread(&id, sizeof(id), 1, fp) != 1)
 979                                                 id = -1;
 980                                         if (swapping)
 981                                                 id = bswap_32(id);
 982                                         if (id > 0) {
 983                                                 msginfo->tags = g_slist_prepend(
 984                                                         msginfo->tags,
 985                                                         GINT_TO_POINTER(id));
 986                                         }
 987                                 } while (id > 0);
 988                                 msginfo->tags = g_slist_reverse(msginfo->tags);
 989                         }
 990                 }
 991         }
 992 bail_err:
 993         if (cache_data != NULL && cache_data != MAP_FAILED) {
 994 #ifdef G_OS_WIN32
 995                 UnmapViewOfFile((void*) cache_data);
 996 #else
 997                 munmap(cache_data, map_len);
 998 #endif
 999         }
1000         fclose(fp);
1001         if (error) {
1002                 debug_print("error reading cache tags from %s\n", tags_file);
1003         }
1004 }
1005
1006 static int msgcache_write_cache(MsgInfo *msginfo, FILE *fp)
1007 {
1008         MsgTmpFlags flags = msginfo->flags.tmp_flags & MSG_CACHED_FLAG_MASK;
1009         GSList *cur;
1010         int w_err = 0, wrote = 0;
1011
1012         WRITE_CACHE_DATA_INT(msginfo->msgnum, fp);
1013         WRITE_CACHE_DATA_INT(msginfo->size, fp);
1014         WRITE_CACHE_DATA_INT(msginfo->mtime, fp);
1015         WRITE_CACHE_DATA_INT(msginfo->date_t, fp);
1016         WRITE_CACHE_DATA_INT(flags, fp);
1017
1018         WRITE_CACHE_DATA(msginfo->fromname, fp);
1019
1020         WRITE_CACHE_DATA(msginfo->date, fp);
1021         WRITE_CACHE_DATA(msginfo->from, fp);
1022         WRITE_CACHE_DATA(msginfo->to, fp);
1023         WRITE_CACHE_DATA(msginfo->cc, fp);
1024         WRITE_CACHE_DATA(msginfo->newsgroups, fp);
1025         WRITE_CACHE_DATA(msginfo->subject, fp);
1026         WRITE_CACHE_DATA(msginfo->msgid, fp);
1027         WRITE_CACHE_DATA(msginfo->inreplyto, fp);
1028         WRITE_CACHE_DATA(msginfo->xref, fp);
1029         WRITE_CACHE_DATA_INT(msginfo->planned_download, fp);
1030         WRITE_CACHE_DATA_INT(msginfo->total_size, fp);
1031
1032         WRITE_CACHE_DATA_INT(g_slist_length(msginfo->references), fp);
1033
1034         for (cur = msginfo->references; cur != NULL; cur = cur->next) {
1035                 WRITE_CACHE_DATA((gchar *)cur->data, fp);
1036         }
1037         return w_err ? -1 : wrote;
1038 }
1039
1040 static int msgcache_write_flags(MsgInfo *msginfo, FILE *fp)
1041 {
1042         MsgPermFlags flags = msginfo->flags.perm_flags;
1043         int w_err = 0, wrote = 0;
1044         WRITE_CACHE_DATA_INT(msginfo->msgnum, fp);
1045         WRITE_CACHE_DATA_INT(flags, fp);
1046         return w_err ? -1 : wrote;
1047 }
1048
1049 static int msgcache_write_tags(MsgInfo *msginfo, FILE *fp)
1050 {
1051         GSList *cur = msginfo->tags;
1052         int w_err = 0, wrote = 0;
1053
1054         WRITE_CACHE_DATA_INT(msginfo->msgnum, fp);
1055         for (; cur; cur = cur->next) {
1056                 gint id = GPOINTER_TO_INT(cur->data);
1057                 if (tags_get_tag(id) != NULL) {
1058                         WRITE_CACHE_DATA_INT(id, fp);
1059                 }
1060         }
1061         WRITE_CACHE_DATA_INT(-1, fp);
1062
1063         return w_err ? -1 : wrote;
1064 }
1065
1066 struct write_fps
1067 {
1068         FILE *cache_fp;
1069         FILE *mark_fp;
1070         FILE *tags_fp;
1071         int error;
1072         guint cache_size;
1073         guint mark_size;
1074         guint tags_size;
1075 };
1076
1077 static void msgcache_write_func(gpointer key, gpointer value, gpointer user_data)
1078 {
1079         MsgInfo *msginfo;
1080         struct write_fps *write_fps;
1081         int tmp;
1082
1083         msginfo = (MsgInfo *)value;
1084         write_fps = user_data;
1085
1086         if (write_fps->cache_fp) {
1087                 tmp = msgcache_write_cache(msginfo, write_fps->cache_fp);
1088                 if (tmp < 0)
1089                         write_fps->error = 1;
1090                 else
1091                         write_fps->cache_size += tmp;
1092         }
1093         if (write_fps->mark_fp) {
1094         tmp= msgcache_write_flags(msginfo, write_fps->mark_fp);
1095                 if (tmp < 0)
1096                         write_fps->error = 1;
1097                 else
1098                         write_fps->mark_size += tmp;
1099                 }
1100         if (write_fps->tags_fp) {
1101                 tmp = msgcache_write_tags(msginfo, write_fps->tags_fp);
1102                 if (tmp < 0)
1103                         write_fps->error = 1;
1104                 else
1105                         write_fps->tags_size += tmp;
1106         }
1107 }
1108
1109 gint msgcache_write(const gchar *cache_file, const gchar *mark_file, const gchar *tags_file, MsgCache *cache)
1110 {
1111         struct write_fps write_fps;
1112         gchar *new_cache, *new_mark, *new_tags;
1113         int w_err = 0, wrote = 0;
1114
1115         START_TIMING("");
1116         cm_return_val_if_fail(cache != NULL, -1);
1117
1118         new_cache = g_strconcat(cache_file, ".new", NULL);
1119         new_mark  = g_strconcat(mark_file, ".new", NULL);
1120         new_tags  = g_strconcat(tags_file, ".new", NULL);
1121
1122         write_fps.error = 0;
1123         write_fps.cache_size = 0;
1124         write_fps.mark_size = 0;
1125         write_fps.tags_size = 0;
1126
1127         /* open files and write headers */
1128
1129         if (cache_file) {
1130                 write_fps.cache_fp = msgcache_open_data_file(new_cache, CACHE_VERSION,
1131                         DATA_WRITE, NULL, 0);
1132                 if (write_fps.cache_fp == NULL) {
1133                         g_free(new_cache);
1134                         g_free(new_mark);
1135                         g_free(new_tags);
1136                         return -1;
1137                 }
1138                 WRITE_CACHE_DATA(CS_UTF_8, write_fps.cache_fp);
1139         } else {
1140                 write_fps.cache_fp = NULL;
1141         }
1142
1143         if (w_err != 0) {
1144                 g_warning("failed to write charset");
1145                 if (write_fps.cache_fp)
1146                         fclose(write_fps.cache_fp);
1147                 claws_unlink(new_cache);
1148                 g_free(new_cache);
1149                 g_free(new_mark);
1150                 g_free(new_tags);
1151                 return -1;
1152         }
1153
1154         if (mark_file) {
1155                 write_fps.mark_fp = msgcache_open_data_file(new_mark, MARK_VERSION,
1156                         DATA_WRITE, NULL, 0);
1157                 if (write_fps.mark_fp == NULL) {
1158                         if (write_fps.cache_fp)
1159                                 fclose(write_fps.cache_fp);
1160                         claws_unlink(new_cache);
1161                         g_free(new_cache);
1162                         g_free(new_mark);
1163                         g_free(new_tags);
1164                         return -1;
1165                 }
1166         } else {
1167                 write_fps.mark_fp = NULL;
1168         }
1169
1170         if (tags_file) {
1171                 write_fps.tags_fp = msgcache_open_data_file(new_tags, TAGS_VERSION,
1172                         DATA_WRITE, NULL, 0);
1173                 if (write_fps.tags_fp == NULL) {
1174                         if (write_fps.cache_fp)
1175                                 fclose(write_fps.cache_fp);
1176                         if (write_fps.mark_fp)
1177                                 fclose(write_fps.mark_fp);
1178                         claws_unlink(new_cache);
1179                         claws_unlink(new_mark);
1180                         g_free(new_cache);
1181                         g_free(new_mark);
1182                         g_free(new_tags);
1183                         return -1;
1184                 }
1185         } else {
1186                 write_fps.tags_fp = NULL;
1187         }
1188
1189         debug_print("\tWriting message cache to %s and %s...\n", new_cache, new_mark);
1190
1191         if (write_fps.cache_fp && change_file_mode_rw(write_fps.cache_fp, new_cache) < 0)
1192                 FILE_OP_ERROR(new_cache, "chmod");
1193
1194         /* headers written, note file size */
1195         if (write_fps.cache_fp)
1196                 write_fps.cache_size = ftell(write_fps.cache_fp);
1197         if (write_fps.mark_fp)
1198                 write_fps.mark_size = ftell(write_fps.mark_fp);
1199         if (write_fps.tags_fp)
1200                 write_fps.tags_size = ftell(write_fps.tags_fp);
1201
1202 #ifdef HAVE_FWRITE_UNLOCKED
1203         /* lock files for write once (instead of once per fwrite) */
1204         if (write_fps.cache_fp)
1205                 flockfile(write_fps.cache_fp);
1206         if (write_fps.mark_fp)
1207                 flockfile(write_fps.mark_fp);
1208         if (write_fps.tags_fp)
1209                 flockfile(write_fps.tags_fp);
1210 #endif
1211         /* write data to the files */
1212         g_hash_table_foreach(cache->msgnum_table, msgcache_write_func, (gpointer)&write_fps);
1213 #ifdef HAVE_FWRITE_UNLOCKED
1214         /* unlock files */
1215         if (write_fps.cache_fp)
1216                 funlockfile(write_fps.cache_fp);
1217         if (write_fps.mark_fp)
1218                 funlockfile(write_fps.mark_fp);
1219         if (write_fps.tags_fp)
1220                 funlockfile(write_fps.tags_fp);
1221 #endif
1222         /* flush buffers */
1223         if (write_fps.cache_fp)
1224                 write_fps.error |= (fflush(write_fps.cache_fp) != 0);
1225         if (write_fps.mark_fp)
1226                 write_fps.error |= (fflush(write_fps.mark_fp) != 0);
1227         if (write_fps.tags_fp)
1228                 write_fps.error |= (fflush(write_fps.tags_fp) != 0);
1229
1230         /* sync to filesystem */
1231         if (prefs_common.flush_metadata && write_fps.cache_fp)
1232                 write_fps.error |= (fsync(fileno(write_fps.cache_fp)) != 0);
1233         if (prefs_common.flush_metadata && write_fps.mark_fp)
1234                 write_fps.error |= (fsync(fileno(write_fps.mark_fp)) != 0);
1235         if (prefs_common.flush_metadata && write_fps.tags_fp)
1236                 write_fps.error |= (fsync(fileno(write_fps.tags_fp)) != 0);
1237
1238         /* close files */
1239         if (write_fps.cache_fp)
1240                 write_fps.error |= (fclose(write_fps.cache_fp) != 0);
1241         if (write_fps.mark_fp)
1242                 write_fps.error |= (fclose(write_fps.mark_fp) != 0);
1243         if (write_fps.tags_fp)
1244                 write_fps.error |= (fclose(write_fps.tags_fp) != 0);
1245
1246
1247         if (write_fps.error != 0) {
1248                 /* in case of error, forget all */
1249                 claws_unlink(new_cache);
1250                 claws_unlink(new_mark);
1251                 claws_unlink(new_tags);
1252                 g_free(new_cache);
1253                 g_free(new_mark);
1254                 g_free(new_tags);
1255                 return -1;
1256         } else {
1257                 /* switch files */
1258                 if (cache_file)
1259                         move_file(new_cache, cache_file, TRUE);
1260                 if (mark_file)
1261                         move_file(new_mark, mark_file, TRUE);
1262                 if (tags_file)
1263                         move_file(new_tags, tags_file, TRUE);
1264                 cache->last_access = time(NULL);
1265         }
1266
1267         g_free(new_cache);
1268         g_free(new_mark);
1269         g_free(new_tags);
1270         debug_print("done.\n");
1271         END_TIMING();
1272         return 0;
1273 }
1274