src/procheader.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 <glib.h>
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include <stdlib.h>
  28 #include <time.h>
  29
  30 #include "intl.h"
  31 #include "procheader.h"
  32 #include "procmsg.h"
  33 #include "codeconv.h"
  34 #include "prefs_common.h"
  35 #include "utils.h"
  36
  37 #define BUFFSIZE        8192
  38
  39 gint procheader_get_one_field(gchar *buf, gint len, FILE *fp,
  40                               HeaderEntry hentry[])
  41 {
  42         gint nexthead;
  43         gint hnum = 0;
  44         HeaderEntry *hp = NULL;
  45
  46         if (hentry != NULL) {
  47                 /* skip non-required headers */
  48                 do {
  49                         do {
  50                                 if (fgets(buf, len, fp) == NULL)
  51                                         return -1;
  52                                 if (buf[0] == '\r' || buf[0] == '\n')
  53                                         return -1;
  54                         } while (buf[0] == ' ' || buf[0] == '\t');
  55
  56                         for (hp = hentry, hnum = 0; hp->name != NULL;
  57                              hp++, hnum++) {
  58                                 if (!strncasecmp(hp->name, buf,
  59                                                  strlen(hp->name))) {
  60                                         break;
  61                                 }
  62                         }
  63                 } while (hp->name == NULL);
  64         } else {
  65                 if (fgets(buf, len, fp) == NULL) return -1;
  66                 if (buf[0] == '\r' || buf[0] == '\n') return -1;
  67         }
  68
  69         /* unfold the specified folded line */
  70         if (hp && hp->unfold) {
  71                 gboolean folded = FALSE;
  72                 gchar *bufp = buf + strlen(buf);
  73
  74                 while (1) {
  75                         nexthead = fgetc(fp);
  76
  77                         /* folded */
  78                         if (nexthead == ' ' || nexthead == '\t')
  79                                 folded = TRUE;
  80                         else if (nexthead == EOF)
  81                                 break;
  82                         else if (folded == TRUE) {
  83                                 /* concatenate next line */
  84                                 if ((len - (bufp - buf)) <= 2) break;
  85
  86                                 /* replace return code on the tail end
  87                                    with space */
  88                                 *(bufp - 1) = ' ';
  89                                 *bufp++ = nexthead;
  90                                 *bufp = '\0';
  91                                 if (nexthead == '\r' || nexthead == '\n') {
  92                                         folded = FALSE;
  93                                         continue;
  94                                 }
  95                                 if (fgets(bufp, len - (bufp - buf), fp)
  96                                     == NULL) break;
  97                                 bufp += strlen(bufp);
  98
  99                                 folded = FALSE;
 100                         } else {
 101                                 ungetc(nexthead, fp);
 102                                 break;
 103                         }
 104                 }
 105
 106                 /* remove trailing return code */
 107                 strretchomp(buf);
 108
 109                 return hnum;
 110         }
 111
 112         while (1) {
 113                 nexthead = fgetc(fp);
 114                 if (nexthead == ' ' || nexthead == '\t') {
 115                         size_t buflen = strlen(buf);
 116
 117                         /* concatenate next line */
 118                         if ((len - buflen) > 2) {
 119                                 gchar *p = buf + buflen;
 120
 121                                 *p++ = nexthead;
 122                                 *p = '\0';
 123                                 buflen++;
 124                                 if (fgets(p, len - buflen, fp) == NULL)
 125                                         break;
 126                         } else
 127                                 break;
 128                 } else {
 129                         if (nexthead != EOF)
 130                                 ungetc(nexthead, fp);
 131                         break;
 132                 }
 133         }
 134
 135         /* remove trailing return code */
 136         strretchomp(buf);
 137
 138         return hnum;
 139 }
 140
 141 gchar *procheader_get_unfolded_line(gchar *buf, gint len, FILE *fp)
 142 {
 143         gboolean folded = FALSE;
 144         gint nexthead;
 145         gchar *bufp;
 146
 147         if (fgets(buf, len, fp) == NULL) return NULL;
 148         if (buf[0] == '\r' || buf[0] == '\n') return NULL;
 149         bufp = buf + strlen(buf);
 150
 151         while (1) {
 152                 nexthead = fgetc(fp);
 153
 154                 /* folded */
 155                 if (nexthead == ' ' || nexthead == '\t')
 156                         folded = TRUE;
 157                 else if (nexthead == EOF)
 158                         break;
 159                 else if (folded == TRUE) {
 160                         /* concatenate next line */
 161                         if ((len - (bufp - buf)) <= 2) break;
 162
 163                         /* replace return code on the tail end
 164                            with space */
 165                         *(bufp - 1) = ' ';
 166                         *bufp++ = nexthead;
 167                         *bufp = '\0';
 168                         if (nexthead == '\r' || nexthead == '\n') {
 169                                 folded = FALSE;
 170                                 continue;
 171                         }
 172                         if (fgets(bufp, len - (bufp - buf), fp)
 173                             == NULL) break;
 174                         bufp += strlen(bufp);
 175
 176                         folded = FALSE;
 177                 } else {
 178                         ungetc(nexthead, fp);
 179                         break;
 180                 }
 181         }
 182
 183         /* remove trailing return code */
 184         strretchomp(buf);
 185
 186         return buf;
 187 }
 188
 189 GSList *procheader_get_header_list_from_file(const gchar *file)
 190 {
 191         FILE *fp;
 192         GSList *hlist;
 193
 194         if ((fp = fopen(file, "r")) == NULL) {
 195                 FILE_OP_ERROR(file, "fopen");
 196                 return NULL;
 197         }
 198
 199         hlist = procheader_get_header_list(fp);
 200
 201         fclose(fp);
 202         return hlist;
 203 }
 204
 205 GSList *procheader_get_header_list(FILE *fp)
 206 {
 207         gchar buf[BUFFSIZE], tmp[BUFFSIZE];
 208         gchar *p;
 209         GSList *hlist = NULL;
 210         Header *header;
 211
 212         g_return_val_if_fail(fp != NULL, NULL);
 213
 214         while (procheader_get_unfolded_line(buf, sizeof(buf), fp) != NULL) {
 215                 if (header = procheader_parse_header(buf))
 216                         hlist = g_slist_append(hlist, header);
 217                 /*
 218                 if (*buf == ':') continue;
 219                 for (p = buf; *p && *p != ' '; p++) {
 220                         if (*p == ':') {
 221                                 header = g_new(Header, 1);
 222                                 header->name = g_strndup(buf, p - buf);
 223                                 p++;
 224                                 while (*p == ' ' || *p == '\t') p++;
 225                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 226                                 header->body = g_strdup(tmp);
 227
 228                                 hlist = g_slist_append(hlist, header);
 229                                 break;
 230                         }
 231                 }
 232                 */
 233         }
 234
 235         return hlist;
 236 }
 237
 238 GPtrArray *procheader_get_header_array(FILE *fp)
 239 {
 240         gchar buf[BUFFSIZE], tmp[BUFFSIZE];
 241         gchar *p;
 242         GPtrArray *headers;
 243         Header *header;
 244
 245         g_return_val_if_fail(fp != NULL, NULL);
 246
 247         headers = g_ptr_array_new();
 248
 249         while (procheader_get_unfolded_line(buf, sizeof(buf), fp) != NULL) {
 250                 if (header = procheader_parse_header(buf))
 251                         g_ptr_array_add(headers, header);
 252                 /*
 253                 if (*buf == ':') continue;
 254                 for (p = buf; *p && *p != ' '; p++) {
 255                         if (*p == ':') {
 256                                 header = g_new(Header, 1);
 257                                 header->name = g_strndup(buf, p - buf);
 258                                 p++;
 259                                 while (*p == ' ' || *p == '\t') p++;
 260                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 261                                 header->body = g_strdup(tmp);
 262
 263                                 g_ptr_array_add(headers, header);
 264                                 break;
 265                         }
 266                 }
 267                 */
 268         }
 269
 270         return headers;
 271 }
 272
 273 GPtrArray *procheader_get_header_array_asis(FILE *fp)
 274 {
 275         gchar buf[BUFFSIZE], tmp[BUFFSIZE];
 276         gchar *p;
 277         GPtrArray *headers;
 278         Header *header;
 279
 280         g_return_val_if_fail(fp != NULL, NULL);
 281
 282         headers = g_ptr_array_new();
 283
 284         while (procheader_get_one_field(buf, sizeof(buf), fp, NULL) != -1) {
 285                 if (header = procheader_parse_header(buf))
 286                         g_ptr_array_add(headers, header);
 287                         /*
 288                 if (*buf == ':') continue;
 289                 for (p = buf; *p && *p != ' '; p++) {
 290                         if (*p == ':') {
 291                                 header = g_new(Header, 1);
 292                                 header->name = g_strndup(buf, p - buf);
 293                                 p++;
 294                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 295                                 header->body = g_strdup(tmp);
 296
 297                                 g_ptr_array_add(headers, header);
 298                                 break;
 299                         }
 300                 }
 301                         */
 302         }
 303
 304         return headers;
 305 }
 306
 307 void procheader_header_list_destroy(GSList *hlist)
 308 {
 309         Header *header;
 310
 311         while (hlist != NULL) {
 312                 header = hlist->data;
 313                 procheader_header_free(header);
 314                 hlist = g_slist_remove(hlist, header);
 315         }
 316 }
 317
 318 void procheader_header_array_destroy(GPtrArray *harray)
 319 {
 320         gint i;
 321         Header *header;
 322
 323         for (i = 0; i < harray->len; i++) {
 324                 header = g_ptr_array_index(harray, i);
 325                 procheader_header_free(header);
 326         }
 327
 328         g_ptr_array_free(harray, TRUE);
 329 }
 330
 331 void procheader_header_free(Header *header)
 332 {
 333         if (!header) return;
 334
 335         g_free(header->name);
 336         g_free(header->body);
 337         g_free(header);
 338 }
 339
 340 /*
 341   tests whether two headers' names are equal
 342   remove the trailing ':' or ' ' before comparing
 343 */
 344
 345 gboolean procheader_headername_equal(char * hdr1, char * hdr2)
 346 {
 347         int len1;
 348         int len2;
 349
 350         len1 = strlen(hdr1);
 351         len2 = strlen(hdr2);
 352         if (hdr1[len1 - 1] == ':')
 353                 len1--;
 354         if (hdr2[len2 - 1] == ':')
 355                 len2--;
 356         if (len1 != len2)
 357                 return 0;
 358
 359         return (g_strncasecmp(hdr1, hdr2, len1) == 0);
 360 }
 361
 362 /*
 363   parse headers, for example :
 364   From: dinh@enseirb.fr becomes :
 365   header->name = "From:"
 366   header->body = "dinh@enseirb.fr"
 367  */
 368
 369 Header * procheader_parse_header(gchar * buf)
 370 {
 371         gchar tmp[BUFFSIZE];
 372         gchar *p = buf;
 373         Header * header;
 374
 375         if ((*buf == ':') || (*buf == ' '))
 376                 return NULL;
 377
 378         for (p = buf; *p ; p++) {
 379                 if ((*p == ':') || (*p == ' ')) {
 380                         header = g_new(Header, 1);
 381                         header->name = g_strndup(buf, p - buf + 1);
 382                         p++;
 383                         while (*p == ' ' || *p == '\t') p++;
 384                         conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 385                         header->body = g_strdup(tmp);
 386                         return header;
 387                 }
 388         }
 389         return NULL;
 390 }
 391
 392 void procheader_get_header_fields(FILE *fp, HeaderEntry hentry[])
 393 {
 394         gchar buf[BUFFSIZE];
 395         HeaderEntry *hp;
 396         gint hnum;
 397         gchar *p;
 398
 399         if (hentry == NULL) return;
 400
 401         while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, hentry))
 402                != -1) {
 403                 hp = hentry + hnum;
 404
 405                 p = buf + strlen(hp->name);
 406                 while (*p == ' ' || *p == '\t') p++;
 407
 408                 if (hp->body == NULL)
 409                         hp->body = g_strdup(p);
 410                 else if (procheader_headername_equal(hp->name, "To") ||
 411                          procheader_headername_equal(hp->name, "Cc")) {
 412                         gchar *tp = hp->body;
 413                         hp->body = g_strconcat(tp, ", ", p, NULL);
 414                         g_free(tp);
 415                 }
 416         }
 417 }
 418
 419 enum
 420 {
 421         H_DATE          = 0,
 422         H_FROM          = 1,
 423         H_TO            = 2,
 424         H_CC            = 3,
 425         H_NEWSGROUPS    = 4,
 426         H_SUBJECT       = 5,
 427         H_MSG_ID        = 6,
 428         H_REFERENCES    = 7,
 429         H_IN_REPLY_TO   = 8,
 430         H_CONTENT_TYPE  = 9,
 431         H_SEEN          = 10,
 432         H_STATUS        = 11,
 433         H_X_STATUS      = 12,
 434         H_FROM_SPACE    = 13,
 435         H_X_FACE        = 14,
 436         H_DISPOSITION_NOTIFICATION_TO = 15,
 437         H_RETURN_RECEIPT_TO = 16
 438 };
 439
 440 MsgInfo *procheader_parse(const gchar *file, MsgFlags flags, gboolean full)
 441 {
 442         FILE *fp;
 443         MsgInfo *msginfo;
 444
 445         if ((fp = fopen(file, "r")) == NULL) {
 446                 FILE_OP_ERROR(file, "fopen");
 447                 return NULL;
 448         }
 449
 450         msginfo = procheader_file_parse(fp, flags, full);
 451
 452         fclose(fp);
 453
 454         return msginfo;
 455 }
 456
 457
 458 /* FIXME: we should not allow headers in messages to change the sylpheed marks
 459  * so we're currently disabling setting any MsgFlags when detecting X-Seen,
 460  * Seen, X-Status, Status. See macro ALLOW_HEADER_HINT */
 461
 462 #define ALLOW_HEADER_HINT
 463
 464 MsgInfo *procheader_file_parse(FILE * fp, MsgFlags flags,
 465                                gboolean full)
 466 {
 467         static HeaderEntry hentry_full[] = {{"Date:",           NULL, FALSE},
 468                                            {"From:",            NULL, TRUE},
 469                                            {"To:",              NULL, TRUE},
 470                                            {"Cc:",              NULL, TRUE},
 471                                            {"Newsgroups:",      NULL, TRUE},
 472                                            {"Subject:",         NULL, TRUE},
 473                                            {"Message-Id:",      NULL, FALSE},
 474                                            {"References:",      NULL, FALSE},
 475                                            {"In-Reply-To:",     NULL, FALSE},
 476                                            {"Content-Type:",    NULL, FALSE},
 477                                            {"Seen:",            NULL, FALSE},
 478                                            {"Status:",          NULL, FALSE},
 479                                            {"X-Status:",        NULL, FALSE},
 480                                            {"From ",            NULL, FALSE},
 481                                            {"X-Face:",          NULL, FALSE},
 482                                            {"Disposition-Notification-To:", NULL, FALSE},
 483                                            {"Return-Receipt-To:", NULL, FALSE},
 484                                            {NULL,               NULL, FALSE}};
 485
 486         static HeaderEntry hentry_short[] = {{"Date:",          NULL, FALSE},
 487                                             {"From:",           NULL, TRUE},
 488                                             {"To:",             NULL, TRUE},
 489                                             {"Cc:",             NULL, TRUE},
 490                                             {"Newsgroups:",     NULL, TRUE},
 491                                             {"Subject:",        NULL, TRUE},
 492                                             {"Message-Id:",     NULL, FALSE},
 493                                             {"References:",     NULL, FALSE},
 494                                             {"In-Reply-To:",    NULL, FALSE},
 495                                             {"Content-Type:",   NULL, FALSE},
 496                                             {"Seen:",           NULL, FALSE},
 497                                             {"Status:",         NULL, FALSE},
 498                                             {"X-Status:",       NULL, FALSE},
 499                                             {"From ",           NULL, FALSE},
 500                                             {NULL,              NULL, FALSE}};
 501
 502         MsgInfo *msginfo;
 503         gchar buf[BUFFSIZE], tmp[BUFFSIZE];
 504         gchar *reference = NULL;
 505         gchar *p;
 506         gchar *hp;
 507         HeaderEntry *hentry;
 508         gint hnum;
 509
 510         hentry = full ? hentry_full : hentry_short;
 511
 512         if (MSG_IS_QUEUED(flags)) {
 513                 while (fgets(buf, sizeof(buf), fp) != NULL)
 514                         if (buf[0] == '\r' || buf[0] == '\n') break;
 515         }
 516
 517         msginfo = g_new0(MsgInfo, 1);
 518
 519         if (flags.tmp_flags || flags.perm_flags)
 520                 msginfo->flags = flags;
 521         else
 522                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_NEW | MSG_UNREAD);
 523
 524         msginfo->inreplyto = NULL;
 525
 526         while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, hentry))
 527                != -1) {
 528                 hp = buf + strlen(hentry[hnum].name);
 529
 530                 while (*hp == ' ' || *hp == '\t') hp++;
 531
 532                 switch (hnum) {
 533                 case H_DATE:
 534                         if (msginfo->date) break;
 535                         msginfo->date_t =
 536                                 procheader_date_parse(NULL, hp, 0);
 537                         msginfo->date = g_strdup(hp);
 538                         break;
 539                 case H_FROM:
 540                         if (msginfo->from) break;
 541                         conv_unmime_header(tmp, sizeof(tmp), hp, NULL);
 542                         msginfo->from = g_strdup(tmp);
 543                         msginfo->fromname = procheader_get_fromname(tmp);
 544                         break;
 545                 case H_TO:
 546                         conv_unmime_header(tmp, sizeof(tmp), hp, NULL);
 547                         if (msginfo->to) {
 548                                 p = msginfo->to;
 549                                 msginfo->to =
 550                                         g_strconcat(p, ", ", tmp, NULL);
 551                                 g_free(p);
 552                         } else
 553                                 msginfo->to = g_strdup(tmp);
 554                         break;
 555                 case H_CC:
 556                         conv_unmime_header(tmp, sizeof(tmp), hp, NULL);
 557                         if (msginfo->cc) {
 558                                 p = msginfo->cc;
 559                                 msginfo->cc =
 560                                         g_strconcat(p, ", ", tmp, NULL);
 561                                 g_free(p);
 562                         } else
 563                                 msginfo->cc = g_strdup(tmp);
 564                         break;
 565                 case H_NEWSGROUPS:
 566                         if (msginfo->newsgroups) {
 567                                 p = msginfo->newsgroups;
 568                                 msginfo->newsgroups =
 569                                         g_strconcat(p, ",", hp, NULL);
 570                                 g_free(p);
 571                         } else
 572                                 msginfo->newsgroups = g_strdup(buf + 12);
 573                         break;
 574                 case H_SUBJECT:
 575                         if (msginfo->subject) break;
 576                         conv_unmime_header(tmp, sizeof(tmp), hp, NULL);
 577                         msginfo->subject = g_strdup(tmp);
 578                         break;
 579                 case H_MSG_ID:
 580                         if (msginfo->msgid) break;
 581
 582                         extract_parenthesis(hp, '<', '>');
 583                         remove_space(hp);
 584                         msginfo->msgid = g_strdup(hp);
 585                         break;
 586                 case H_REFERENCES:
 587                 case H_IN_REPLY_TO:
 588                         if (!reference) {
 589                                 msginfo->references = g_strdup(hp);
 590                                 eliminate_parenthesis(hp, '(', ')');
 591                                 if ((p = strrchr(hp, '<')) != NULL &&
 592                                     strchr(p + 1, '>') != NULL) {
 593                                         extract_parenthesis(p, '<', '>');
 594                                         remove_space(p);
 595                                         if (*p != '\0')
 596                                                 reference = g_strdup(p);
 597                                 }
 598                         }
 599                         break;
 600                 case H_CONTENT_TYPE:
 601                         if (!strncasecmp(hp, "multipart", 9))
 602                                 MSG_SET_TMP_FLAGS(msginfo->flags, MSG_MIME);
 603                         break;
 604 #ifdef ALLOW_HEADER_HINT
 605                 case H_SEEN:
 606                         /* mnews Seen header */
 607                         MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW|MSG_UNREAD);
 608                         break;
 609 #endif
 610                 case H_X_FACE:
 611                         if (msginfo->xface) break;
 612                         msginfo->xface = g_strdup(hp);
 613                         break;
 614                 case H_DISPOSITION_NOTIFICATION_TO:
 615                         if (msginfo->dispositionnotificationto) break;
 616                         msginfo->dispositionnotificationto = g_strdup(hp);
 617                         break;
 618                 case H_RETURN_RECEIPT_TO:
 619                         if (msginfo->returnreceiptto) break;
 620                         msginfo->returnreceiptto = g_strdup(hp);
 621                         break;
 622 #ifdef ALLOW_HEADER_HINT
 623                 case H_STATUS:
 624                         if (strchr(hp, 'R') != NULL)
 625                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 626                         if (strchr(hp, 'O') != NULL)
 627                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW);
 628                         if (strchr(hp, 'U') != NULL)
 629                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 630                         break;
 631                 case H_X_STATUS:
 632                         if (strchr(hp, 'D') != NULL)
 633                                 MSG_SET_PERM_FLAGS(msginfo->flags,
 634                                               MSG_REALLY_DELETED);
 635                         if (strchr(hp, 'F') != NULL)
 636                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_MARKED);
 637                         if (strchr(hp, 'd') != NULL)
 638                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_DELETED);
 639                         if (strchr(hp, 'r') != NULL)
 640                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_REPLIED);
 641                         if (strchr(hp, 'f') != NULL)
 642                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_FORWARDED);
 643                         break;
 644 #endif
 645                 case H_FROM_SPACE:
 646                         if (msginfo->fromspace) break;
 647                         msginfo->fromspace = g_strdup(hp);
 648                         break;
 649                 default:
 650                         break;
 651                 }
 652         }
 653         msginfo->inreplyto = reference;
 654
 655         return msginfo;
 656 }
 657
 658 gchar *procheader_get_fromname(const gchar *str)
 659 {
 660         gchar *tmp, *name;
 661
 662         Xalloca(tmp, strlen(str) + 1, return NULL);
 663         strcpy(tmp, str);
 664
 665         if (*tmp == '\"') {
 666                 extract_quote(tmp, '\"');
 667                 g_strstrip(tmp);
 668         } else if (strchr(tmp, '<')) {
 669                 eliminate_parenthesis(tmp, '<', '>');
 670                 g_strstrip(tmp);
 671                 if (*tmp == '\0') {
 672                         strcpy(tmp, str);
 673                         extract_parenthesis(tmp, '<', '>');
 674                         g_strstrip(tmp);
 675                 }
 676         } else if (strchr(tmp, '(')) {
 677                 extract_parenthesis(tmp, '(', ')');
 678                 g_strstrip(tmp);
 679         }
 680
 681         if (*tmp == '\0')
 682                 name = g_strdup(str);
 683         else
 684                 name = g_strdup(tmp);
 685
 686         return name;
 687 }
 688
 689 time_t procheader_date_parse(gchar *dest, const gchar *src, gint len)
 690 {
 691         static gchar monthstr[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
 692         gchar weekday[4];
 693         gint day;
 694         gchar month[4];
 695         gint year;
 696         gint hh, mm, ss;
 697         gchar zone[6];
 698         gint result;
 699         GDateMonth dmonth;
 700         struct tm t;
 701         gchar *p;
 702         time_t timer;
 703
 704         /* parsing date field... */
 705         result = sscanf(src, "%3s, %d %3s %d %2d:%2d:%2d %5s",
 706                         weekday, &day, month, &year, &hh, &mm, &ss, zone);
 707         if (result != 8) {
 708                 result = sscanf(src, "%d %3s %d %2d:%2d:%2d %5s",
 709                                 &day, month, &year, &hh, &mm, &ss, zone);
 710                 if (result != 7) {
 711                         ss = 0;
 712                         result = sscanf(src, "%3s, %d %3s %d %2d:%2d %5s",
 713                                         weekday, &day, month, &year, &hh, &mm, zone);
 714                         if (result != 7) {
 715                                 result = sscanf(src, "%d %3s %d %2d:%2d %5s",
 716                                                 &day, month, &year, &hh, &mm,
 717                                                 zone);
 718                                 if (result != 6) {
 719                                         g_warning("Invalid date: %s\n", src);
 720                                         if (dest && len > 0)
 721                                                 strncpy2(dest, src, len);
 722                                         return 0;
 723                                 }
 724                         }
 725                 }
 726         }
 727
 728         /* Y2K compliant :) */
 729         if (year < 100) {
 730                 if (year < 70)
 731                         year += 2000;
 732                 else
 733                         year += 1900;
 734         }
 735
 736         if ((p = strstr(monthstr, month)) != NULL)
 737                 dmonth = (gint)(p - monthstr) / 3 + 1;
 738         else {
 739                 g_warning("Invalid month: %s\n", month);
 740                 dmonth = G_DATE_BAD_MONTH;
 741         }
 742
 743         t.tm_sec = ss;
 744         t.tm_min = mm;
 745         t.tm_hour = hh;
 746         t.tm_mday = day;
 747         t.tm_mon = dmonth - 1;
 748         t.tm_year = year - 1900;
 749         t.tm_wday = 0;
 750         t.tm_yday = 0;
 751         t.tm_isdst = -1;
 752
 753         timer = mktime(&t);
 754         timer += tzoffset_sec(&timer) - remote_tzoffset_sec(zone);
 755
 756         if (dest)
 757                 procheader_date_get_localtime(dest, len, timer);
 758
 759         return timer;
 760 }
 761
 762 void procheader_date_get_localtime(gchar *dest, gint len, const time_t timer)
 763 {
 764         struct tm *lt;
 765         gchar *default_format = "%y/%m/%d(%a) %H:%M";
 766
 767         lt = localtime(&timer);
 768
 769         if (prefs_common.date_format)
 770                 strftime(dest, len, prefs_common.date_format, lt);
 771         else
 772                 strftime(dest, len, default_format, lt);
 773 }
 774
 775 gint get_header_from_msginfo(MsgInfo *msginfo, gchar *buf, gint len,gchar *header)
 776 {
 777        gchar *file;
 778        FILE *fp;
 779        HeaderEntry hentry[]={{header,NULL,TRUE},
 780                                     {NULL,NULL,FALSE}};
 781        gint val;
 782        g_return_if_fail(msginfo != NULL);
 783        file = procmsg_get_message_file_path(msginfo);
 784        if ((fp = fopen(file, "r")) == NULL) {
 785                FILE_OP_ERROR(file, "fopen");
 786                g_free(file);
 787                return;
 788         }
 789        val=procheader_get_one_field(buf,len, fp, hentry);
 790         if (fclose(fp) == EOF) {
 791                 FILE_OP_ERROR(file, "fclose");
 792                 unlink(file);
 793                 return -1;
 794         }
 795        if (val == -1)
 796           return -1;
 797        return 0;
 798 }