src/mbox.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2001 Hiroyuki Yamamoto
   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 2 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, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <stdio.h>
  28 #include <unistd.h>
  29 #include <string.h>
  30 #include <fcntl.h>
  31 #include <sys/file.h>
  32 #include <ctype.h>
  33 #include <time.h>
  34
  35 #include "intl.h"
  36 #include "mbox.h"
  37 #include "procmsg.h"
  38 #include "folder.h"
  39 #include "filter.h"
  40 #include "prefs_common.h"
  41 #include "prefs_account.h"
  42 #include "account.h"
  43 #include "utils.h"
  44 #include "filtering.h"
  45
  46 #define MSGBUFSIZE      8192
  47
  48 #define FPUTS_TO_TMP_ABORT_IF_FAIL(s) \
  49 { \
  50         if (fputs(s, tmp_fp) == EOF) { \
  51                 g_warning(_("can't write to temporary file\n")); \
  52                 fclose(tmp_fp); \
  53                 fclose(mbox_fp); \
  54                 unlink(tmp_file); \
  55                 return -1; \
  56         } \
  57 }
  58
  59 gint proc_mbox(FolderItem *dest, const gchar *mbox, GHashTable *folder_table)
  60 {
  61         FILE *mbox_fp;
  62         gchar buf[MSGBUFSIZE], from_line[MSGBUFSIZE];
  63         gchar *tmp_file;
  64         gint msgs = 0;
  65         FolderItem *inbox;
  66
  67         g_return_val_if_fail(dest != NULL, -1);
  68         g_return_val_if_fail(mbox != NULL, -1);
  69
  70         debug_print(_("Getting messages from %s into %s...\n"), mbox, dest->path);
  71
  72         if ((mbox_fp = fopen(mbox, "r")) == NULL) {
  73                 FILE_OP_ERROR(mbox, "fopen");
  74                 return -1;
  75         }
  76
  77         /* ignore empty lines on the head */
  78         do {
  79                 if (fgets(buf, sizeof(buf), mbox_fp) == NULL) {
  80                         g_warning(_("can't read mbox file.\n"));
  81                         fclose(mbox_fp);
  82                         return -1;
  83                 }
  84         } while (buf[0] == '\n' || buf[0] == '\r');
  85
  86         if (strncmp(buf, "From ", 5) != 0) {
  87                 g_warning(_("invalid mbox format: %s\n"), mbox);
  88                 fclose(mbox_fp);
  89                 return -1;
  90         }
  91
  92         strcpy(from_line, buf);
  93         if (fgets(buf, sizeof(buf), mbox_fp) == NULL) {
  94                 g_warning(_("malformed mbox: %s\n"), mbox);
  95                 fclose(mbox_fp);
  96                 return -1;
  97         }
  98
  99         tmp_file = get_tmp_file();
 100         inbox    = folder_get_default_inbox();
 101
 102         do {
 103                 FILE *tmp_fp;
 104                 FolderItem *dropfolder;
 105                 gchar *startp, *endp, *rpath;
 106                 gint empty_line;
 107                 gint val;
 108                 gboolean is_next_msg = FALSE;
 109                 gint msgnum;
 110
 111                 if ((tmp_fp = fopen(tmp_file, "w")) == NULL) {
 112                         FILE_OP_ERROR(tmp_file, "fopen");
 113                         g_warning(_("can't open temporary file\n"));
 114                         fclose(mbox_fp);
 115                         return -1;
 116                 }
 117                 if (change_file_mode_rw(tmp_fp, tmp_file) < 0)
 118                         FILE_OP_ERROR(tmp_file, "chmod");
 119
 120                 /* convert unix From into Return-Path */
 121                 /*
 122                 startp = from_line + 5;
 123                 endp = strchr(startp, ' ');
 124                 if (endp == NULL)
 125                         rpath = g_strdup(startp);
 126                 else
 127                         rpath = g_strndup(startp, endp - startp);
 128                 g_strstrip(rpath);
 129                 g_snprintf(from_line, sizeof(from_line),
 130                            "Return-Path: %s\n", rpath);
 131                 g_free(rpath);
 132                 */
 133
 134                 FPUTS_TO_TMP_ABORT_IF_FAIL(from_line);
 135                 FPUTS_TO_TMP_ABORT_IF_FAIL(buf);
 136                 from_line[0] = '\0';
 137
 138                 empty_line = 0;
 139
 140                 while (fgets(buf, sizeof(buf), mbox_fp) != NULL) {
 141                         if (buf[0] == '\n' || buf[0] == '\r') {
 142                                 empty_line++;
 143                                 buf[0] = '\0';
 144                                 continue;
 145                         }
 146
 147                         /* From separator */
 148                         while (!strncmp(buf, "From ", 5)) {
 149                                 strcpy(from_line, buf);
 150                                 if (fgets(buf, sizeof(buf), mbox_fp) == NULL) {
 151                                         buf[0] = '\0';
 152                                         break;
 153                                 }
 154
 155                                 if (is_header_line(buf)) {
 156                                         is_next_msg = TRUE;
 157                                         break;
 158                                 } else if (!strncmp(buf, "From ", 5)) {
 159                                         continue;
 160                                 } else if (!strncmp(buf, ">From ", 6)) {
 161                                         g_memmove(buf, buf + 1, strlen(buf));
 162                                         is_next_msg = TRUE;
 163                                         break;
 164                                 } else {
 165                                         g_warning(_("unescaped From found:\n%s"),
 166                                                   from_line);
 167                                         break;
 168                                 }
 169                         }
 170                         if (is_next_msg) break;
 171
 172                         if (empty_line > 0) {
 173                                 while (empty_line--)
 174                                         FPUTS_TO_TMP_ABORT_IF_FAIL("\n");
 175                                 empty_line = 0;
 176                         }
 177
 178                         if (from_line[0] != '\0') {
 179                                 FPUTS_TO_TMP_ABORT_IF_FAIL(from_line);
 180                                 from_line[0] = '\0';
 181                         }
 182
 183                         if (buf[0] != '\0') {
 184                                 if (!strncmp(buf, ">From ", 6)) {
 185                                         FPUTS_TO_TMP_ABORT_IF_FAIL(buf + 1);
 186                                 } else
 187                                         FPUTS_TO_TMP_ABORT_IF_FAIL(buf);
 188
 189                                 buf[0] = '\0';
 190                         }
 191                 }
 192
 193                 if (empty_line > 0) {
 194                         while (--empty_line)
 195                                 FPUTS_TO_TMP_ABORT_IF_FAIL("\n");
 196                 }
 197
 198                 if (fclose(tmp_fp) == EOF) {
 199                         FILE_OP_ERROR(tmp_file, "fclose");
 200                         g_warning(_("can't write to temporary file\n"));
 201                         fclose(mbox_fp);
 202                         unlink(tmp_file);
 203                         return -1;
 204                 }
 205
 206                 if (folder_table) {
 207                         if (global_processing == NULL) {
 208                                 /* old filtering */
 209                                 dropfolder = filter_get_dest_folder
 210                                         (prefs_common.fltlist, tmp_file);
 211                                 if (!dropfolder ||
 212                                     !strcmp(dropfolder->path, FILTER_NOT_RECEIVE))
 213                                         dropfolder = dest;
 214                                 val = GPOINTER_TO_INT(g_hash_table_lookup
 215                                                       (folder_table, dropfolder));
 216                                 if (val == 0) {
 217                                         folder_item_scan(dropfolder);
 218                                         g_hash_table_insert(folder_table, dropfolder,
 219                                                             GINT_TO_POINTER(1));
 220                                 }
 221                         }
 222                         else {
 223                                 /* CLAWS: new filtering */
 224                                 dropfolder = folder_get_default_processing();
 225                         }
 226                 } else
 227                         dropfolder = dest;
 228
 229
 230                 if ((msgnum = folder_item_add_msg(dropfolder, tmp_file, TRUE)) < 0) {
 231                         fclose(mbox_fp);
 232                         unlink(tmp_file);
 233                         return -1;
 234                 }
 235                 folder_item_scan(dropfolder);
 236
 237                 if (global_processing) {
 238                         /* CLAWS: new filtering */
 239                         if (folder_table) {
 240                                 filter_message(global_processing, inbox,
 241                                                msgnum, folder_table);
 242                         }
 243                 }
 244
 245                 msgs++;
 246         } while (from_line[0] != '\0');
 247
 248         fclose(mbox_fp);
 249         debug_print(_("%d messages found.\n"), msgs);
 250
 251         return msgs;
 252 }
 253
 254 gint lock_mbox(const gchar *base, LockType type)
 255 {
 256         gint retval = 0;
 257
 258         if (type == LOCK_FILE) {
 259                 gchar *lockfile, *locklink;
 260                 gint retry = 0;
 261                 FILE *lockfp;
 262
 263                 lockfile = g_strdup_printf("%s.%d", base, getpid());
 264                 if ((lockfp = fopen(lockfile, "w")) == NULL) {
 265                         FILE_OP_ERROR(lockfile, "fopen");
 266                         g_warning(_("can't create lock file %s\n"), lockfile);
 267                         g_warning(_("use 'flock' instead of 'file' if possible.\n"));
 268                         g_free(lockfile);
 269                         return -1;
 270                 }
 271
 272                 fprintf(lockfp, "%d\n", getpid());
 273                 fclose(lockfp);
 274
 275                 locklink = g_strconcat(base, ".lock", NULL);
 276                 while (link(lockfile, locklink) < 0) {
 277                         FILE_OP_ERROR(lockfile, "link");
 278                         if (retry >= 5) {
 279                                 g_warning(_("can't create %s\n"), lockfile);
 280                                 unlink(lockfile);
 281                                 g_free(lockfile);
 282                                 return -1;
 283                         }
 284                         if (retry == 0)
 285                                 g_warning(_("mailbox is owned by another"
 286                                             " process, waiting...\n"));
 287                         retry++;
 288                         sleep(5);
 289                 }
 290                 unlink(lockfile);
 291                 g_free(lockfile);
 292         } else if (type == LOCK_FLOCK) {
 293                 gint lockfd;
 294
 295 #if HAVE_FLOCK
 296                 if ((lockfd = open(base, O_RDONLY)) < 0) {
 297 #else
 298                 if ((lockfd = open(base, O_RDWR)) < 0) {
 299 #endif
 300                         FILE_OP_ERROR(base, "open");
 301                         return -1;
 302                 }
 303 #if HAVE_FLOCK
 304                 if (flock(lockfd, LOCK_EX|LOCK_NB) < 0) {
 305                         perror("flock");
 306 #else
 307 #if HAVE_LOCKF
 308                 if (lockf(lockfd, F_TLOCK, 0) < 0) {
 309                         perror("lockf");
 310 #else
 311                 {
 312 #endif
 313 #endif /* HAVE_FLOCK */
 314                         g_warning(_("can't lock %s\n"), base);
 315                         if (close(lockfd) < 0)
 316                                 perror("close");
 317                         return -1;
 318                 }
 319                 retval = lockfd;
 320         } else {
 321                 g_warning(_("invalid lock type\n"));
 322                 return -1;
 323         }
 324
 325         return retval;
 326 }
 327
 328 gint unlock_mbox(const gchar *base, gint fd, LockType type)
 329 {
 330         if (type == LOCK_FILE) {
 331                 gchar *lockfile;
 332
 333                 lockfile = g_strconcat(base, ".lock", NULL);
 334                 if (unlink(lockfile) < 0) {
 335                         FILE_OP_ERROR(lockfile, "unlink");
 336                         g_free(lockfile);
 337                         return -1;
 338                 }
 339                 g_free(lockfile);
 340
 341                 return 0;
 342         } else if (type == LOCK_FLOCK) {
 343 #if HAVE_FLOCK
 344                 if (flock(fd, LOCK_UN) < 0) {
 345                         perror("flock");
 346 #else
 347 #if HAVE_LOCKF
 348                 if (lockf(fd, F_ULOCK, 0) < 0) {
 349                         perror("lockf");
 350 #else
 351                 {
 352 #endif
 353 #endif /* HAVE_FLOCK */
 354                         g_warning(_("can't unlock %s\n"), base);
 355                         if (close(fd) < 0)
 356                                 perror("close");
 357                         return -1;
 358                 }
 359
 360                 if (close(fd) < 0) {
 361                         perror("close");
 362                         return -1;
 363                 }
 364
 365                 return 0;
 366         }
 367
 368         g_warning(_("invalid lock type\n"));
 369         return -1;
 370 }
 371
 372 gint copy_mbox(const gchar *src, const gchar *dest)
 373 {
 374         return copy_file(src, dest);
 375 }
 376
 377 void empty_mbox(const gchar *mbox)
 378 {
 379         if (truncate(mbox, 0) < 0) {
 380                 FILE *fp;
 381
 382                 FILE_OP_ERROR(mbox, "truncate");
 383                 if ((fp = fopen(mbox, "w")) == NULL) {
 384                         FILE_OP_ERROR(mbox, "fopen");
 385                         g_warning(_("can't truncate mailbox to zero.\n"));
 386                         return;
 387                 }
 388                 fclose(fp);
 389         }
 390 }
 391
 392 /* read all messages in SRC, and store them into one MBOX file. */
 393 gint export_to_mbox(FolderItem *src, const gchar *mbox)
 394 {
 395         GSList *mlist;
 396         GSList *cur;
 397         MsgInfo *msginfo;
 398         FILE *msg_fp;
 399         FILE *mbox_fp;
 400         gchar buf[BUFFSIZE];
 401
 402         g_return_val_if_fail(src != NULL, -1);
 403         g_return_val_if_fail(src->folder != NULL, -1);
 404         g_return_val_if_fail(mbox != NULL, -1);
 405
 406         debug_print(_("Exporting messages from %s into %s...\n"),
 407                     src->path, mbox);
 408
 409         if ((mbox_fp = fopen(mbox, "w")) == NULL) {
 410                 FILE_OP_ERROR(mbox, "fopen");
 411                 return -1;
 412         }
 413
 414         mlist = src->folder->get_msg_list(src->folder, src, TRUE);
 415
 416         for (cur = mlist; cur != NULL; cur = cur->next) {
 417                 msginfo = (MsgInfo *)cur->data;
 418
 419                 msg_fp = procmsg_open_message(msginfo);
 420                 if (!msg_fp) {
 421                         procmsg_msginfo_free(msginfo);
 422                         continue;
 423                 }
 424
 425                 strncpy2(buf,
 426                          msginfo->from ? msginfo->from :
 427                          cur_account && cur_account->address ?
 428                          cur_account->address : "unknown",
 429                          sizeof(buf));
 430                 extract_address(buf);
 431
 432                 fprintf(mbox_fp, "From %s %s",
 433                         buf, ctime(&msginfo->date_t));
 434
 435                 while (fgets(buf, sizeof(buf), msg_fp) != NULL) {
 436                         if (!strncmp(buf, "From ", 5))
 437                                 fputc('>', mbox_fp);
 438                         fputs(buf, mbox_fp);
 439                 }
 440                 fputc('\n', mbox_fp);
 441
 442                 fclose(msg_fp);
 443                 procmsg_msginfo_free(msginfo);
 444         }
 445
 446         g_slist_free(mlist);
 447
 448         fclose(mbox_fp);
 449
 450         return 0;
 451 }