src/procheader.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2003 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                 } while (hp->name == NULL);
  63         } else {
  64                 if (fgets(buf, len, fp) == NULL) return -1;
  65                 if (buf[0] == '\r' || buf[0] == '\n') return -1;
  66         }
  67
  68         /* unfold the specified folded line */
  69         if (hp && hp->unfold) {
  70                 gboolean folded = FALSE;
  71                 gchar *bufp = buf + strlen(buf);
  72
  73                 for (; bufp > buf &&
  74                      (*(bufp - 1) == '\n' || *(bufp - 1) == '\r');
  75                      bufp--)
  76                         *(bufp - 1) = '\0';
  77
  78                 while (1) {
  79                         nexthead = fgetc(fp);
  80
  81                         /* folded */
  82                         if (nexthead == ' ' || nexthead == '\t')
  83                                 folded = TRUE;
  84                         else if (nexthead == EOF)
  85                                 break;
  86                         else if (folded == TRUE) {
  87                                 if (nexthead == '\r' || nexthead == '\n') {
  88                                         folded = FALSE;
  89                                         continue;
  90                                 }
  91
  92                                 if ((len - (bufp - buf)) <= 2) break;
  93
  94                                 /* replace return code on the tail end
  95                                    with space */
  96                                 *bufp++ = ' ';
  97                                 *bufp++ = nexthead;
  98                                 *bufp = '\0';
  99                                 /* concatenate next line */
 100                                 if (fgets(bufp, len - (bufp - buf), fp)
 101                                     == NULL) break;
 102                                 bufp += strlen(bufp);
 103
 104                                 for (; bufp > buf &&
 105                                      (*(bufp - 1) == '\n' || *(bufp - 1) == '\r');
 106                                      bufp--)
 107                                         *(bufp - 1) = '\0';
 108
 109                                 folded = FALSE;
 110                         } else {
 111                                 ungetc(nexthead, fp);
 112                                 break;
 113                         }
 114                 }
 115
 116                 return hnum;
 117         }
 118
 119         while (1) {
 120                 nexthead = fgetc(fp);
 121                 if (nexthead == ' ' || nexthead == '\t') {
 122                         size_t buflen = strlen(buf);
 123
 124                         /* concatenate next line */
 125                         if ((len - buflen) > 2) {
 126                                 gchar *p = buf + buflen;
 127
 128                                 *p++ = nexthead;
 129                                 *p = '\0';
 130                                 buflen++;
 131                                 if (fgets(p, len - buflen, fp) == NULL)
 132                                         break;
 133                         } else
 134                                 break;
 135                 } else {
 136                         if (nexthead != EOF)
 137                                 ungetc(nexthead, fp);
 138                         break;
 139                 }
 140         }
 141
 142         /* remove trailing return code */
 143         strretchomp(buf);
 144
 145         return hnum;
 146 }
 147
 148 gchar *procheader_get_unfolded_line(gchar *buf, gint len, FILE *fp)
 149 {
 150         gboolean folded = FALSE;
 151         gint nexthead;
 152         gchar *bufp;
 153
 154         if (fgets(buf, len, fp) == NULL) return NULL;
 155         if (buf[0] == '\r' || buf[0] == '\n') return NULL;
 156         bufp = buf + strlen(buf);
 157
 158         for (; bufp > buf &&
 159              (*(bufp - 1) == '\n' || *(bufp - 1) == '\r');
 160              bufp--)
 161                 *(bufp - 1) = '\0';
 162
 163         while (1) {
 164                 nexthead = fgetc(fp);
 165
 166                 /* folded */
 167                 if (nexthead == ' ' || nexthead == '\t')
 168                         folded = TRUE;
 169                 else if (nexthead == EOF)
 170                         break;
 171                 else if (folded == TRUE) {
 172                         if (nexthead == '\r' || nexthead == '\n') {
 173                                 folded = FALSE;
 174                                 continue;
 175                         }
 176
 177                         if ((len - (bufp - buf)) <= 2) break;
 178
 179                         /* replace return code on the tail end
 180                            with space */
 181                         *bufp++ = ' ';
 182                         *bufp++ = nexthead;
 183                         *bufp = '\0';
 184
 185                         /* concatenate next line */
 186                         if (fgets(bufp, len - (bufp - buf), fp)
 187                             == NULL) break;
 188                         bufp += strlen(bufp);
 189
 190                         for (; bufp > buf &&
 191                              (*(bufp - 1) == '\n' || *(bufp - 1) == '\r');
 192                              bufp--)
 193                                 *(bufp - 1) = '\0';
 194
 195                         folded = FALSE;
 196                 } else {
 197                         ungetc(nexthead, fp);
 198                         break;
 199                 }
 200         }
 201
 202         /* remove trailing return code */
 203         strretchomp(buf);
 204
 205         return buf;
 206 }
 207
 208 GSList *procheader_get_header_list_from_file(const gchar *file)
 209 {
 210         FILE *fp;
 211         GSList *hlist;
 212
 213         if ((fp = fopen(file, "rb")) == NULL) {
 214                 FILE_OP_ERROR(file, "fopen");
 215                 return NULL;
 216         }
 217
 218         hlist = procheader_get_header_list(fp);
 219
 220         fclose(fp);
 221         return hlist;
 222 }
 223
 224 GSList *procheader_get_header_list(FILE *fp)
 225 {
 226         gchar buf[BUFFSIZE];
 227         GSList *hlist = NULL;
 228         Header *header;
 229
 230         g_return_val_if_fail(fp != NULL, NULL);
 231
 232         while (procheader_get_unfolded_line(buf, sizeof(buf), fp) != NULL) {
 233                 if ((header = procheader_parse_header(buf)) != NULL)
 234                         hlist = g_slist_append(hlist, header);
 235                 /*
 236                 if (*buf == ':') continue;
 237                 for (p = buf; *p && *p != ' '; p++) {
 238                         if (*p == ':') {
 239                                 header = g_new(Header, 1);
 240                                 header->name = g_strndup(buf, p - buf);
 241                                 p++;
 242                                 while (*p == ' ' || *p == '\t') p++;
 243                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 244                                 header->body = g_strdup(tmp);
 245
 246                                 hlist = g_slist_append(hlist, header);
 247                                 break;
 248                         }
 249                 }
 250                 */
 251         }
 252
 253         return hlist;
 254 }
 255
 256 GPtrArray *procheader_get_header_array(FILE *fp)
 257 {
 258         gchar buf[BUFFSIZE];
 259         GPtrArray *headers;
 260         Header *header;
 261
 262         g_return_val_if_fail(fp != NULL, NULL);
 263
 264         headers = g_ptr_array_new();
 265
 266         while (procheader_get_unfolded_line(buf, sizeof(buf), fp) != NULL) {
 267                 if ((header = procheader_parse_header(buf)) != NULL)
 268                         g_ptr_array_add(headers, header);
 269                 /*
 270                 if (*buf == ':') continue;
 271                 for (p = buf; *p && *p != ' '; p++) {
 272                         if (*p == ':') {
 273                                 header = g_new(Header, 1);
 274                                 header->name = g_strndup(buf, p - buf);
 275                                 p++;
 276                                 while (*p == ' ' || *p == '\t') p++;
 277                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 278                                 header->body = g_strdup(tmp);
 279
 280                                 g_ptr_array_add(headers, header);
 281                                 break;
 282                         }
 283                 }
 284                 */
 285         }
 286
 287         return headers;
 288 }
 289
 290 GPtrArray *procheader_get_header_array_asis(FILE *fp)
 291 {
 292         gchar buf[BUFFSIZE];
 293         GPtrArray *headers;
 294         Header *header;
 295
 296         g_return_val_if_fail(fp != NULL, NULL);
 297
 298         headers = g_ptr_array_new();
 299
 300         while (procheader_get_one_field(buf, sizeof(buf), fp, NULL) != -1) {
 301                 if ((header = procheader_parse_header(buf)) != NULL)
 302                         g_ptr_array_add(headers, header);
 303                         /*
 304                 if (*buf == ':') continue;
 305                 for (p = buf; *p && *p != ' '; p++) {
 306                         if (*p == ':') {
 307                                 header = g_new(Header, 1);
 308                                 header->name = g_strndup(buf, p - buf);
 309                                 p++;
 310                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 311                                 header->body = g_strdup(tmp);
 312
 313                                 g_ptr_array_add(headers, header);
 314                                 break;
 315                         }
 316                 }
 317                         */
 318         }
 319
 320         return headers;
 321 }
 322
 323 void procheader_header_list_destroy(GSList *hlist)
 324 {
 325         Header *header;
 326
 327         while (hlist != NULL) {
 328                 header = hlist->data;
 329                 procheader_header_free(header);
 330                 hlist = g_slist_remove(hlist, header);
 331         }
 332 }
 333
 334 void procheader_header_array_destroy(GPtrArray *harray)
 335 {
 336         gint i;
 337         Header *header;
 338
 339         for (i = 0; i < harray->len; i++) {
 340                 header = g_ptr_array_index(harray, i);
 341                 procheader_header_free(header);
 342         }
 343
 344         g_ptr_array_free(harray, TRUE);
 345 }
 346
 347 void procheader_header_free(Header *header)
 348 {
 349         if (!header) return;
 350
 351         g_free(header->name);
 352         g_free(header->body);
 353         g_free(header);
 354 }
 355
 356 /*
 357   tests whether two headers' names are equal
 358   remove the trailing ':' or ' ' before comparing
 359 */
 360
 361 gboolean procheader_headername_equal(char * hdr1, char * hdr2)
 362 {
 363         int len1;
 364         int len2;
 365
 366         len1 = strlen(hdr1);
 367         len2 = strlen(hdr2);
 368         if (hdr1[len1 - 1] == ':')
 369                 len1--;
 370         if (hdr2[len2 - 1] == ':')
 371                 len2--;
 372         if (len1 != len2)
 373                 return 0;
 374
 375         return (g_strncasecmp(hdr1, hdr2, len1) == 0);
 376 }
 377
 378 /*
 379   parse headers, for example :
 380   From: dinh@enseirb.fr becomes :
 381   header->name = "From:"
 382   header->body = "dinh@enseirb.fr"
 383  */
 384
 385 Header * procheader_parse_header(gchar * buf)
 386 {
 387         gchar tmp[BUFFSIZE];
 388         gchar *p = buf;
 389         Header * header;
 390
 391         if ((*buf == ':') || (*buf == ' '))
 392                 return NULL;
 393
 394         for (p = buf; *p ; p++) {
 395                 if ((*p == ':') || (*p == ' ')) {
 396                         header = g_new(Header, 1);
 397                         header->name = g_strndup(buf, p - buf + 1);
 398                         p++;
 399                         while (*p == ' ' || *p == '\t') p++;
 400                         conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 401                         if(tmp == NULL)
 402                                 header->body = g_strdup(p);
 403                         else
 404                                 header->body = g_strdup(tmp);
 405                         return header;
 406                 }
 407         }
 408         return NULL;
 409 }
 410
 411 void procheader_get_header_fields(FILE *fp, HeaderEntry hentry[])
 412 {
 413         gchar buf[BUFFSIZE];
 414         HeaderEntry *hp;
 415         gint hnum;
 416         gchar *p;
 417
 418         if (hentry == NULL) return;
 419
 420         while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, hentry))
 421                != -1) {
 422                 hp = hentry + hnum;
 423
 424                 p = buf + strlen(hp->name);
 425                 while (*p == ' ' || *p == '\t') p++;
 426
 427                 if (hp->body == NULL)
 428                         hp->body = g_strdup(p);
 429                 else if (procheader_headername_equal(hp->name, "To") ||
 430                          procheader_headername_equal(hp->name, "Cc")) {
 431                         gchar *tp = hp->body;
 432                         hp->body = g_strconcat(tp, ", ", p, NULL);
 433                         g_free(tp);
 434                 }
 435         }
 436 }
 437
 438 MsgInfo *procheader_parse_file(const gchar *file, MsgFlags flags,
 439                                gboolean full, gboolean decrypted)
 440 {
 441         FILE *fp;
 442         MsgInfo *msginfo;
 443
 444         if ((fp = fopen(file, "rb")) == NULL) {
 445                 FILE_OP_ERROR(file, "fopen");
 446                 return NULL;
 447         }
 448
 449         msginfo = procheader_parse_stream(fp, flags, full, decrypted);
 450         fclose(fp);
 451         return msginfo;
 452 }
 453
 454 MsgInfo *procheader_parse_str(const gchar *str, MsgFlags flags, gboolean full,
 455                               gboolean decrypted)
 456 {
 457         FILE *fp;
 458         MsgInfo *msginfo;
 459
 460         if ((fp = str_open_as_stream(str)) == NULL)
 461                 return NULL;
 462
 463         msginfo = procheader_parse_stream(fp, flags, full, decrypted);
 464         fclose(fp);
 465         return msginfo;
 466 }
 467
 468 enum
 469 {
 470         H_DATE          = 0,
 471         H_FROM          = 1,
 472         H_TO            = 2,
 473         H_CC            = 3,
 474         H_NEWSGROUPS    = 4,
 475         H_SUBJECT       = 5,
 476         H_MSG_ID        = 6,
 477         H_REFERENCES    = 7,
 478         H_IN_REPLY_TO   = 8,
 479         H_CONTENT_TYPE  = 9,
 480         H_SEEN          = 10,
 481         H_STATUS        = 11,
 482         H_X_STATUS      = 12,
 483         H_FROM_SPACE    = 13,
 484         H_X_FACE        = 14,
 485         H_DISPOSITION_NOTIFICATION_TO = 15,
 486         H_RETURN_RECEIPT_TO = 16
 487 };
 488
 489 static HeaderEntry hentry_full[] = {{"Date:",           NULL, FALSE},
 490                                    {"From:",            NULL, TRUE},
 491                                    {"To:",              NULL, TRUE},
 492                                    {"Cc:",              NULL, TRUE},
 493                                    {"Newsgroups:",      NULL, TRUE},
 494                                    {"Subject:",         NULL, TRUE},
 495                                    {"Message-Id:",      NULL, FALSE},
 496                                    {"References:",      NULL, FALSE},
 497                                    {"In-Reply-To:",     NULL, FALSE},
 498                                    {"Content-Type:",    NULL, FALSE},
 499                                    {"Seen:",            NULL, FALSE},
 500                                    {"Status:",          NULL, FALSE},
 501                                    {"X-Status:",        NULL, FALSE},
 502                                    {"From ",            NULL, FALSE},
 503                                    {"X-Face:",          NULL, FALSE},
 504                                    {"Disposition-Notification-To:", NULL, FALSE},
 505                                    {"Return-Receipt-To:", NULL, FALSE},
 506                                    {NULL,               NULL, FALSE}};
 507
 508 static HeaderEntry hentry_short[] = {{"Date:",          NULL, FALSE},
 509                                     {"From:",           NULL, TRUE},
 510                                     {"To:",             NULL, TRUE},
 511                                     {"Cc:",             NULL, TRUE},
 512                                     {"Newsgroups:",     NULL, TRUE},
 513                                     {"Subject:",        NULL, TRUE},
 514                                     {"Message-Id:",     NULL, FALSE},
 515                                     {"References:",     NULL, FALSE},
 516                                     {"In-Reply-To:",    NULL, FALSE},
 517                                     {"Content-Type:",   NULL, FALSE},
 518                                     {"Seen:",           NULL, FALSE},
 519                                     {"Status:",         NULL, FALSE},
 520                                     {"X-Status:",       NULL, FALSE},
 521                                     {"From ",           NULL, FALSE},
 522                                     {NULL,              NULL, FALSE}};
 523
 524 HeaderEntry* procheader_get_headernames(gboolean full)
 525 {
 526         return full ? hentry_full : hentry_short;
 527 }
 528
 529 MsgInfo *procheader_parse_stream(FILE *fp, MsgFlags flags, gboolean full,
 530                                  gboolean decrypted)
 531 {
 532         MsgInfo *msginfo;
 533         gchar buf[BUFFSIZE], tmp[BUFFSIZE];
 534         gchar *reference = NULL;
 535         gchar *p;
 536         gchar *hp;
 537         HeaderEntry *hentry;
 538         gint hnum;
 539
 540         hentry = procheader_get_headernames(full);
 541
 542         if (MSG_IS_QUEUED(flags) || MSG_IS_DRAFT(flags)) {
 543                 while (fgets(buf, sizeof(buf), fp) != NULL)
 544                         if (buf[0] == '\r' || buf[0] == '\n') break;
 545         }
 546
 547         msginfo = procmsg_msginfo_new();
 548
 549         if (flags.tmp_flags || flags.perm_flags)
 550                 msginfo->flags = flags;
 551         else
 552                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_NEW | MSG_UNREAD);
 553
 554         if (decrypted)
 555                 MSG_UNSET_TMP_FLAGS(msginfo->flags, MSG_MIME);
 556
 557         msginfo->inreplyto = NULL;
 558
 559         while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, hentry))
 560                != -1) {
 561                 hp = buf + strlen(hentry[hnum].name);
 562                 while (*hp == ' ' || *hp == '\t') hp++;
 563
 564                 switch (hnum) {
 565                 case H_DATE:
 566                         if (msginfo->date) break;
 567                         msginfo->date_t =
 568                                 procheader_date_parse(NULL, hp, 0);
 569                         msginfo->date = g_strdup(hp);
 570                         break;
 571                 case H_FROM:
 572                         if (msginfo->from) break;
 573                         conv_unmime_header(tmp, sizeof(tmp), hp, NULL);
 574                         msginfo->from = g_strdup(tmp);
 575                         msginfo->fromname = procheader_get_fromname(tmp);
 576                         break;
 577                 case H_TO:
 578                         conv_unmime_header(tmp, sizeof(tmp), hp, NULL);
 579                         if (msginfo->to) {
 580                                 p = msginfo->to;
 581                                 msginfo->to =
 582                                         g_strconcat(p, ", ", tmp, NULL);
 583                                 g_free(p);
 584                         } else
 585                                 msginfo->to = g_strdup(tmp);
 586                         break;
 587                 case H_CC:
 588                         conv_unmime_header(tmp, sizeof(tmp), hp, NULL);
 589                         if (msginfo->cc) {
 590                                 p = msginfo->cc;
 591                                 msginfo->cc =
 592                                         g_strconcat(p, ", ", tmp, NULL);
 593                                 g_free(p);
 594                         } else
 595                                 msginfo->cc = g_strdup(tmp);
 596                         break;
 597                 case H_NEWSGROUPS:
 598                         if (msginfo->newsgroups) {
 599                                 p = msginfo->newsgroups;
 600                                 msginfo->newsgroups =
 601                                         g_strconcat(p, ",", hp, NULL);
 602                                 g_free(p);
 603                         } else
 604                                 msginfo->newsgroups = g_strdup(hp);
 605                         break;
 606                 case H_SUBJECT:
 607                         if (msginfo->subject) break;
 608                         conv_unmime_header(tmp, sizeof(tmp), hp, NULL);
 609                         msginfo->subject = g_strdup(tmp);
 610                         break;
 611                 case H_MSG_ID:
 612                         if (msginfo->msgid) break;
 613
 614                         extract_parenthesis(hp, '<', '>');
 615                         remove_space(hp);
 616                         msginfo->msgid = g_strdup(hp);
 617                         break;
 618                 case H_REFERENCES:
 619                 case H_IN_REPLY_TO:
 620                         if (!reference) {
 621                                 msginfo->references = g_strdup(hp);
 622                                 eliminate_parenthesis(hp, '(', ')');
 623                                 if ((p = strrchr(hp, '<')) != NULL &&
 624                                     strchr(p + 1, '>') != NULL) {
 625                                         extract_parenthesis(p, '<', '>');
 626                                         remove_space(p);
 627                                         if (*p != '\0')
 628                                                 reference = g_strdup(p);
 629                                 }
 630                         }
 631                         break;
 632                 case H_CONTENT_TYPE:
 633                         if (decrypted) {
 634                                 if (!strncasecmp(hp, "multipart", 9)) {
 635                                         if (strncasecmp(hp, "multipart/signed", 16)) {
 636                                                 MSG_SET_TMP_FLAGS(msginfo->flags,
 637                                                           MSG_MIME);
 638                                         } else {
 639                                                 MSG_SET_TMP_FLAGS(msginfo->flags,
 640                                                           MSG_SIGNED);
 641                                         }
 642                                 }
 643                         }
 644                         else if (!strncasecmp(hp, "multipart/encrypted", 19)) {
 645                                 MSG_SET_TMP_FLAGS(msginfo->flags,
 646                                                   MSG_ENCRYPTED);
 647                         }
 648                         else if (!strncasecmp(hp, "multipart", 9) &&
 649                                    !strncasecmp(hp, "multipart/signed", 16)) {
 650                                 MSG_SET_TMP_FLAGS(msginfo->flags, MSG_SIGNED);
 651                         }
 652                         else if (!strncasecmp(hp, "multipart", 9))
 653                                 MSG_SET_TMP_FLAGS(msginfo->flags, MSG_MIME);
 654                         break;
 655 #ifdef ALLOW_HEADER_HINT
 656                 case H_SEEN:
 657                         /* mnews Seen header */
 658                         MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW|MSG_UNREAD);
 659                         break;
 660 #endif
 661                 case H_X_FACE:
 662                         if (msginfo->xface) break;
 663                         msginfo->xface = g_strdup(hp);
 664                         break;
 665                 case H_DISPOSITION_NOTIFICATION_TO:
 666                         if (msginfo->dispositionnotificationto) break;
 667                         msginfo->dispositionnotificationto = g_strdup(hp);
 668                         MSG_SET_PERM_FLAGS(msginfo->flags, MSG_RETRCPT_PENDING);
 669                         break;
 670                 case H_RETURN_RECEIPT_TO:
 671                         if (msginfo->returnreceiptto) break;
 672                         msginfo->returnreceiptto = g_strdup(hp);
 673                         MSG_SET_PERM_FLAGS(msginfo->flags, MSG_RETRCPT_PENDING);
 674                         break;
 675 #ifdef ALLOW_HEADER_HINT
 676                 case H_STATUS:
 677                         if (strchr(hp, 'R') != NULL)
 678                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 679                         if (strchr(hp, 'O') != NULL)
 680                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW);
 681                         if (strchr(hp, 'U') != NULL)
 682                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 683                         break;
 684                 case H_X_STATUS:
 685                         if (strchr(hp, 'D') != NULL)
 686                                 MSG_SET_PERM_FLAGS(msginfo->flags,
 687                                               MSG_REALLY_DELETED);
 688                         if (strchr(hp, 'F') != NULL)
 689                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_MARKED);
 690                         if (strchr(hp, 'd') != NULL)
 691                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_DELETED);
 692                         if (strchr(hp, 'r') != NULL)
 693                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_REPLIED);
 694                         if (strchr(hp, 'f') != NULL)
 695                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_FORWARDED);
 696                         break;
 697 #endif
 698                 case H_FROM_SPACE:
 699                         if (msginfo->fromspace) break;
 700                         msginfo->fromspace = g_strdup(hp);
 701                         break;
 702                 default:
 703                         break;
 704                 }
 705         }
 706         msginfo->inreplyto = reference;
 707
 708         return msginfo;
 709 }
 710
 711 gchar *procheader_get_fromname(const gchar *str)
 712 {
 713         gchar *tmp, *name;
 714
 715         Xstrdup_a(tmp, str, return NULL);
 716
 717         if (*tmp == '\"') {
 718                 extract_quote(tmp, '\"');
 719                 g_strstrip(tmp);
 720         } else if (strchr(tmp, '<')) {
 721                 eliminate_parenthesis(tmp, '<', '>');
 722                 g_strstrip(tmp);
 723                 if (*tmp == '\0') {
 724                         strcpy(tmp, str);
 725                         extract_parenthesis(tmp, '<', '>');
 726                         g_strstrip(tmp);
 727                 }
 728         } else if (strchr(tmp, '(')) {
 729                 extract_parenthesis(tmp, '(', ')');
 730                 g_strstrip(tmp);
 731         }
 732
 733         if (*tmp == '\0')
 734                 name = g_strdup(str);
 735         else
 736                 name = g_strdup(tmp);
 737
 738         return name;
 739 }
 740
 741 static gint procheader_scan_date_string(const gchar *str,
 742                                         gchar *weekday, gint *day,
 743                                         gchar *month, gint *year,
 744                                         gint *hh, gint *mm, gint *ss,
 745                                         gchar *zone)
 746 {
 747         gint result;
 748
 749         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d %5s",
 750                         weekday, day, month, year, hh, mm, ss, zone);
 751         if (result == 8) return 0;
 752
 753         result = sscanf(str, "%3s,%d %9s %d %2d:%2d:%2d %5s",
 754                         weekday, day, month, year, hh, mm, ss, zone);
 755         if (result == 8) return 0;
 756
 757         result = sscanf(str, "%d %9s %d %2d:%2d:%2d %5s",
 758                         day, month, year, hh, mm, ss, zone);
 759         if (result == 7) return 0;
 760
 761         *ss = 0;
 762         result = sscanf(str, "%10s %d %9s %d %2d:%2d %5s",
 763                         weekday, day, month, year, hh, mm, zone);
 764         if (result == 7) return 0;
 765
 766         result = sscanf(str, "%d %9s %d %2d:%2d %5s",
 767                         day, month, year, hh, mm, zone);
 768         if (result == 6) return 0;
 769
 770         return -1;
 771 }
 772
 773 /*
 774  * Hiro, most UNIXen support this function:
 775  * http://www.mcsr.olemiss.edu/cgi-bin/man-cgi?getdate
 776  */
 777 gboolean procheader_date_parse_to_tm(const gchar *src, struct tm *t, char *zone)
 778 {
 779         static gchar monthstr[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
 780         gchar weekday[11];
 781         gint day;
 782         gchar month[10];
 783         gint year;
 784         gint hh, mm, ss;
 785         GDateMonth dmonth;
 786         gchar *p;
 787
 788         if (!t)
 789                 return FALSE;
 790
 791         memset(t, 0, sizeof *t);
 792
 793         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 794                                         &hh, &mm, &ss, zone) < 0) {
 795                 g_warning("Invalid date: %s\n", src);
 796                 return FALSE;
 797         }
 798
 799         /* Y2K compliant :) */
 800         if (year < 100) {
 801                 if (year < 70)
 802                         year += 2000;
 803                 else
 804                         year += 1900;
 805         }
 806
 807         month[3] = '\0';
 808         if ((p = strstr(monthstr, month)) != NULL)
 809                 dmonth = (gint)(p - monthstr) / 3 + 1;
 810         else {
 811                 g_warning("Invalid month: %s\n", month);
 812                 dmonth = G_DATE_BAD_MONTH;
 813         }
 814
 815         t->tm_sec = ss;
 816         t->tm_min = mm;
 817         t->tm_hour = hh;
 818         t->tm_mday = day;
 819         t->tm_mon = dmonth - 1;
 820         t->tm_year = year - 1900;
 821         t->tm_wday = 0;
 822         t->tm_yday = 0;
 823         t->tm_isdst = -1;
 824
 825         mktime(t);
 826
 827         return TRUE;
 828 }
 829
 830 time_t procheader_date_parse(gchar *dest, const gchar *src, gint len)
 831 {
 832         static gchar monthstr[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
 833         gchar weekday[11];
 834         gint day;
 835         gchar month[10];
 836         gint year;
 837         gint hh, mm, ss;
 838         gchar zone[6];
 839         GDateMonth dmonth = G_DATE_BAD_MONTH;
 840         struct tm t;
 841         gchar *p;
 842         time_t timer;
 843
 844         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 845                                         &hh, &mm, &ss, zone) < 0) {
 846                 g_warning("Invalid date: %s\n", src);
 847                 if (dest && len > 0)
 848                         strncpy2(dest, src, len);
 849                 return 0;
 850         }
 851
 852         /* Y2K compliant :) */
 853         if (year < 100) {
 854                 if (year < 70)
 855                         year += 2000;
 856                 else
 857                         year += 1900;
 858         }
 859
 860         month[3] = '\0';
 861         for (p = monthstr; *p != '\0'; p += 3) {
 862                 if (!strncasecmp(p, month, 3)) {
 863                         dmonth = (gint)(p - monthstr) / 3 + 1;
 864                         break;
 865                 }
 866         }
 867         if (*p == '\0')
 868                 g_warning("Invalid month: %s\n", month);
 869
 870         t.tm_sec = ss;
 871         t.tm_min = mm;
 872         t.tm_hour = hh;
 873         t.tm_mday = day;
 874         t.tm_mon = dmonth - 1;
 875         t.tm_year = year - 1900;
 876         t.tm_wday = 0;
 877         t.tm_yday = 0;
 878         t.tm_isdst = -1;
 879
 880         timer = mktime(&t);
 881         timer += tzoffset_sec(&timer) - remote_tzoffset_sec(zone);
 882
 883         if (dest)
 884                 procheader_date_get_localtime(dest, len, timer);
 885
 886         return timer;
 887 }
 888
 889 void procheader_date_get_localtime(gchar *dest, gint len, const time_t timer)
 890 {
 891         struct tm *lt;
 892         gchar *default_format = "%y/%m/%d(%a) %H:%M";
 893
 894         lt = localtime(&timer);
 895
 896         if (prefs_common.date_format)
 897                 strftime(dest, len, prefs_common.date_format, lt);
 898         else
 899                 strftime(dest, len, default_format, lt);
 900 }
 901
 902 gint get_header_from_msginfo(MsgInfo *msginfo, gchar *buf, gint len, gchar *header)
 903 {
 904         gchar *file;
 905         FILE *fp;
 906         HeaderEntry hentry[]={ { header, NULL, TRUE  },
 907                                { NULL,   NULL, FALSE } };
 908         gint val;
 909
 910         g_return_val_if_fail(msginfo != NULL, -1);
 911         file = procmsg_get_message_file_path(msginfo);
 912         if ((fp = fopen(file, "rb")) == NULL) {
 913                FILE_OP_ERROR(file, "fopen");
 914                g_free(file);
 915                return -1;
 916         }
 917         val = procheader_get_one_field(buf,len, fp, hentry);
 918         if (fclose(fp) == EOF) {
 919                 FILE_OP_ERROR(file, "fclose");
 920                 unlink(file);
 921                 g_free(file);
 922                 return -1;
 923         }
 924
 925         g_free(file);
 926         if (val == -1)
 927                 return -1;
 928
 929         return 0;
 930 }