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 typedef char *(*getlinefunc)(char *, int, void *);
  40 typedef int (*peekcharfunc)(void *);
  41 typedef int (*getcharfunc)(void *);
  42 typedef gint (*get_one_field_func)(gchar *, gint, void *, HeaderEntry[]);
  43
  44 static gint string_get_one_field(gchar *buf, gint len, char **str,
  45                                  HeaderEntry hentry[]);
  46
  47 static char *string_getline(char *buf, int len, char **str);
  48 static int string_peekchar(char **str);
  49 static int string_getchar(char **str);
  50 static int file_peekchar(FILE *fp);
  51 static int file_getchar(FILE *fp);
  52 static gint generic_get_one_field(gchar *buf, gint len, void *data,
  53                                   HeaderEntry hentry[],
  54                                   getlinefunc getline,
  55                                   peekcharfunc peekchar,
  56                                   getcharfunc getchar);
  57 static MsgInfo *parse_stream(void *data, gboolean isstring, MsgFlags flags,
  58                              gboolean full, gboolean decrypted);
  59
  60
  61 gint procheader_get_one_field(gchar *buf, gint len, FILE *fp,
  62                               HeaderEntry hentry[])
  63 {
  64         return generic_get_one_field(buf, len, fp, hentry,
  65                                      (getlinefunc)fgets, (peekcharfunc)file_peekchar,
  66                                      (getcharfunc)file_getchar);
  67 }
  68
  69 static gint string_get_one_field(gchar *buf, gint len, char **str,
  70                                  HeaderEntry hentry[])
  71 {
  72         return generic_get_one_field(buf, len, str, hentry,
  73                                      (getlinefunc)string_getline,
  74                                      (peekcharfunc)string_peekchar,
  75                                      (getcharfunc)string_getchar);
  76 }
  77
  78 static char *string_getline(char *buf, int len, char **str)
  79 {
  80         if (!**str)
  81                 return NULL;
  82
  83         for (; **str && len > 1; --len)
  84                 if ((*buf++ = *(*str)++) == '\n')
  85                     break;
  86         *buf = '\0';
  87
  88         return buf;
  89 }
  90
  91 static int string_peekchar(char **str)
  92 {
  93         return **str;
  94 }
  95
  96 static int string_getchar(char **str)
  97 {
  98         return *(*str)++;
  99 }
 100
 101 static int file_peekchar(FILE *fp)
 102 {
 103         return ungetc(getc(fp), fp);
 104 }
 105
 106 static int file_getchar(FILE *fp)
 107 {
 108         return getc(fp);
 109 }
 110
 111 static gint generic_get_one_field(gchar *buf, gint len, void *data,
 112                           HeaderEntry *hentry,
 113                           getlinefunc getline, peekcharfunc peekchar,
 114                           getcharfunc getchar_)
 115 {
 116         gint nexthead;
 117         gint hnum = 0;
 118         HeaderEntry *hp = NULL;
 119
 120         if (hentry != NULL) {
 121                 /* skip non-required headers */
 122                 do {
 123                         do {
 124                                 if (getline(buf, len, data) == NULL)
 125                                         return -1;
 126                                 if (buf[0] == '\r' || buf[0] == '\n')
 127                                         return -1;
 128                         } while (buf[0] == ' ' || buf[0] == '\t');
 129
 130                         for (hp = hentry, hnum = 0; hp->name != NULL;
 131                              hp++, hnum++) {
 132                                 if (!strncasecmp(hp->name, buf,
 133                                                  strlen(hp->name)))
 134                                         break;
 135                         }
 136                 } while (hp->name == NULL);
 137         } else {
 138                 if (getline(buf, len, data) == NULL) return -1;
 139                 if (buf[0] == '\r' || buf[0] == '\n') return -1;
 140         }
 141
 142         /* remove trailing new line */
 143         strretchomp(buf);
 144
 145 #define UNFOLD_LINE() \
 146         (!hentry || (hp && hp->unfold))
 147
 148         /* unfold line */
 149         while (1) {
 150                 nexthead = peekchar(data);
 151                 /* ([*WSP CRLF] 1*WSP) */
 152                 if (nexthead == ' ' || nexthead == '\t') {
 153                         size_t buflen = strlen(buf);
 154
 155                         /* concatenate next line */
 156                         if ((len - buflen) > 2) {
 157                                 if (getline(buf + buflen, len - buflen, data) == NULL)
 158                                         break;
 159                                 /* trim trailing \n if requesting one header or
 160                                  * unfolding was requested */
 161                                 if (UNFOLD_LINE())
 162                                     strretchomp(buf);
 163                         } else
 164                                 break;
 165                 } else
 166                         break;
 167         }
 168 #undef UNFOLD_LINE
 169
 170         return hnum;
 171 }
 172
 173 #if 0
 174 gchar *procheader_get_unfolded_line(gchar *buf, gint len, FILE *fp)
 175 {
 176         gboolean folded = FALSE;
 177         gint nexthead;
 178         gchar *bufp;
 179
 180         if (fgets(buf, len, fp) == NULL) return NULL;
 181         if (buf[0] == '\r' || buf[0] == '\n') return NULL;
 182         bufp = buf + strlen(buf);
 183
 184         for (; bufp > buf &&
 185              (*(bufp - 1) == '\n' || *(bufp - 1) == '\r');
 186              bufp--)
 187                 *(bufp - 1) = '\0';
 188
 189         while (1) {
 190                 nexthead = fgetc(fp);
 191
 192                 /* folded */
 193                 if (nexthead == ' ' || nexthead == '\t')
 194                         folded = TRUE;
 195                 else if (nexthead == EOF)
 196                         break;
 197                 else if (folded == TRUE) {
 198                         if (nexthead == '\r' || nexthead == '\n') {
 199                                 folded = FALSE;
 200                                 continue;
 201                         }
 202
 203                         if ((len - (bufp - buf)) <= 2) break;
 204
 205                         /* replace return code on the tail end
 206                            with space */
 207                         *bufp++ = ' ';
 208                         *bufp++ = nexthead;
 209                         *bufp = '\0';
 210
 211                         /* concatenate next line */
 212                         if (fgets(bufp, len - (bufp - buf), fp)
 213                             == NULL) break;
 214                         bufp += strlen(bufp);
 215
 216                         for (; bufp > buf &&
 217                              (*(bufp - 1) == '\n' || *(bufp - 1) == '\r');
 218                              bufp--)
 219                                 *(bufp - 1) = '\0';
 220
 221                         folded = FALSE;
 222                 } else {
 223                         ungetc(nexthead, fp);
 224                         break;
 225                 }
 226         }
 227
 228         /* remove trailing return code */
 229         strretchomp(buf);
 230
 231         return buf;
 232 }
 233 #endif
 234
 235 #if 0
 236 GSList *procheader_get_header_list_from_file(const gchar *file)
 237 {
 238         FILE *fp;
 239         GSList *hlist;
 240
 241         if ((fp = fopen(file, "rb")) == NULL) {
 242                 FILE_OP_ERROR(file, "fopen");
 243                 return NULL;
 244         }
 245
 246         hlist = procheader_get_header_list(fp);
 247
 248         fclose(fp);
 249         return hlist;
 250 }
 251
 252 GSList *procheader_get_header_list(FILE *fp)
 253 {
 254         gchar buf[BUFFSIZE];
 255         GSList *hlist = NULL;
 256         Header *header;
 257
 258         g_return_val_if_fail(fp != NULL, NULL);
 259
 260         while (procheader_get_unfolded_line(buf, sizeof(buf), fp) != NULL) {
 261                 if ((header = procheader_parse_header(buf)) != NULL)
 262                         hlist = g_slist_append(hlist, header);
 263                 /*
 264                 if (*buf == ':') continue;
 265                 for (p = buf; *p && *p != ' '; p++) {
 266                         if (*p == ':') {
 267                                 header = g_new(Header, 1);
 268                                 header->name = g_strndup(buf, p - buf);
 269                                 p++;
 270                                 while (*p == ' ' || *p == '\t') p++;
 271                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 272                                 header->body = g_strdup(tmp);
 273
 274                                 hlist = g_slist_append(hlist, header);
 275                                 break;
 276                         }
 277                 }
 278                 */
 279         }
 280
 281         return hlist;
 282 }
 283 #endif
 284
 285 #if 0
 286 GPtrArray *procheader_get_header_array(FILE *fp)
 287 {
 288         gchar buf[BUFFSIZE];
 289         GPtrArray *headers;
 290         Header *header;
 291
 292         g_return_val_if_fail(fp != NULL, NULL);
 293
 294         headers = g_ptr_array_new();
 295
 296         while (procheader_get_unfolded_line(buf, sizeof(buf), fp) != NULL) {
 297                 if ((header = procheader_parse_header(buf)) != NULL)
 298                         g_ptr_array_add(headers, header);
 299                 /*
 300                 if (*buf == ':') continue;
 301                 for (p = buf; *p && *p != ' '; p++) {
 302                         if (*p == ':') {
 303                                 header = g_new(Header, 1);
 304                                 header->name = g_strndup(buf, p - buf);
 305                                 p++;
 306                                 while (*p == ' ' || *p == '\t') p++;
 307                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 308                                 header->body = g_strdup(tmp);
 309
 310                                 g_ptr_array_add(headers, header);
 311                                 break;
 312                         }
 313                 }
 314                 */
 315         }
 316
 317         return headers;
 318 }
 319 #endif
 320
 321 GPtrArray *procheader_get_header_array_asis(FILE *fp)
 322 {
 323         gchar buf[BUFFSIZE];
 324         GPtrArray *headers;
 325         Header *header;
 326
 327         g_return_val_if_fail(fp != NULL, NULL);
 328
 329         headers = g_ptr_array_new();
 330
 331         while (procheader_get_one_field(buf, sizeof(buf), fp, NULL) != -1) {
 332                 if ((header = procheader_parse_header(buf)) != NULL)
 333                         g_ptr_array_add(headers, header);
 334                         /*
 335                 if (*buf == ':') continue;
 336                 for (p = buf; *p && *p != ' '; p++) {
 337                         if (*p == ':') {
 338                                 header = g_new(Header, 1);
 339                                 header->name = g_strndup(buf, p - buf);
 340                                 p++;
 341                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 342                                 header->body = g_strdup(tmp);
 343
 344                                 g_ptr_array_add(headers, header);
 345                                 break;
 346                         }
 347                 }
 348                         */
 349         }
 350
 351         return headers;
 352 }
 353
 354 #if 0
 355 void procheader_header_list_destroy(GSList *hlist)
 356 {
 357         Header *header;
 358
 359         while (hlist != NULL) {
 360                 header = hlist->data;
 361                 procheader_header_free(header);
 362                 hlist = g_slist_remove(hlist, header);
 363         }
 364 }
 365 #endif
 366
 367 void procheader_header_array_destroy(GPtrArray *harray)
 368 {
 369         gint i;
 370         Header *header;
 371
 372         for (i = 0; i < harray->len; i++) {
 373                 header = g_ptr_array_index(harray, i);
 374                 procheader_header_free(header);
 375         }
 376
 377         g_ptr_array_free(harray, TRUE);
 378 }
 379
 380 void procheader_header_free(Header *header)
 381 {
 382         if (!header) return;
 383
 384         g_free(header->name);
 385         g_free(header->body);
 386         g_free(header);
 387 }
 388
 389 /*
 390   tests whether two headers' names are equal
 391   remove the trailing ':' or ' ' before comparing
 392 */
 393
 394 gboolean procheader_headername_equal(char * hdr1, char * hdr2)
 395 {
 396         int len1;
 397         int len2;
 398
 399         len1 = strlen(hdr1);
 400         len2 = strlen(hdr2);
 401         if (hdr1[len1 - 1] == ':')
 402                 len1--;
 403         if (hdr2[len2 - 1] == ':')
 404                 len2--;
 405         if (len1 != len2)
 406                 return 0;
 407
 408         return (g_strncasecmp(hdr1, hdr2, len1) == 0);
 409 }
 410
 411 /*
 412   parse headers, for example :
 413   From: dinh@enseirb.fr becomes :
 414   header->name = "From:"
 415   header->body = "dinh@enseirb.fr"
 416  */
 417
 418 Header * procheader_parse_header(gchar * buf)
 419 {
 420         gchar tmp[BUFFSIZE];
 421         gchar *p = buf;
 422         Header * header;
 423
 424         if ((*buf == ':') || (*buf == ' '))
 425                 return NULL;
 426
 427         for (p = buf; *p ; p++) {
 428                 if ((*p == ':') || (*p == ' ')) {
 429                         header = g_new(Header, 1);
 430                         header->name = g_strndup(buf, p - buf + 1);
 431                         p++;
 432                         while (*p == ' ' || *p == '\t') p++;
 433                         conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 434                         if(tmp == NULL)
 435                                 header->body = g_strdup(p);
 436                         else
 437                                 header->body = g_strdup(tmp);
 438                         return header;
 439                 }
 440         }
 441         return NULL;
 442 }
 443
 444 void procheader_get_header_fields(FILE *fp, HeaderEntry hentry[])
 445 {
 446         gchar buf[BUFFSIZE];
 447         HeaderEntry *hp;
 448         gint hnum;
 449         gchar *p;
 450
 451         if (hentry == NULL) return;
 452
 453         while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, hentry))
 454                != -1) {
 455                 hp = hentry + hnum;
 456
 457                 p = buf + strlen(hp->name);
 458                 while (*p == ' ' || *p == '\t') p++;
 459
 460                 if (hp->body == NULL)
 461                         hp->body = g_strdup(p);
 462                 else if (procheader_headername_equal(hp->name, "To") ||
 463                          procheader_headername_equal(hp->name, "Cc")) {
 464                         gchar *tp = hp->body;
 465                         hp->body = g_strconcat(tp, ", ", p, NULL);
 466                         g_free(tp);
 467                 }
 468         }
 469 }
 470
 471 MsgInfo *procheader_parse_file(const gchar *file, MsgFlags flags,
 472                                gboolean full, gboolean decrypted)
 473 {
 474         FILE *fp;
 475         MsgInfo *msginfo;
 476
 477         if ((fp = fopen(file, "rb")) == NULL) {
 478                 FILE_OP_ERROR(file, "fopen");
 479                 return NULL;
 480         }
 481
 482         msginfo = procheader_parse_stream(fp, flags, full, decrypted);
 483         fclose(fp);
 484         return msginfo;
 485 }
 486
 487 MsgInfo *procheader_parse_str(const gchar *str, MsgFlags flags, gboolean full,
 488                               gboolean decrypted)
 489 {
 490         return parse_stream(&str, TRUE, flags, full, decrypted);
 491 }
 492
 493 enum
 494 {
 495         H_DATE          = 0,
 496         H_FROM          = 1,
 497         H_TO            = 2,
 498         H_CC            = 3,
 499         H_NEWSGROUPS    = 4,
 500         H_SUBJECT       = 5,
 501         H_MSG_ID        = 6,
 502         H_REFERENCES    = 7,
 503         H_IN_REPLY_TO   = 8,
 504         H_CONTENT_TYPE  = 9,
 505         H_SEEN          = 10,
 506         H_STATUS        = 11,
 507         H_X_STATUS      = 12,
 508         H_FROM_SPACE    = 13,
 509         H_X_FACE        = 14,
 510         H_DISPOSITION_NOTIFICATION_TO = 15,
 511         H_RETURN_RECEIPT_TO = 16
 512 };
 513
 514 static HeaderEntry hentry_full[] = {{"Date:",           NULL, FALSE},
 515                                    {"From:",            NULL, TRUE},
 516                                    {"To:",              NULL, TRUE},
 517                                    {"Cc:",              NULL, TRUE},
 518                                    {"Newsgroups:",      NULL, TRUE},
 519                                    {"Subject:",         NULL, TRUE},
 520                                    {"Message-Id:",      NULL, FALSE},
 521                                    {"References:",      NULL, FALSE},
 522                                    {"In-Reply-To:",     NULL, FALSE},
 523                                    {"Content-Type:",    NULL, FALSE},
 524                                    {"Seen:",            NULL, FALSE},
 525                                    {"Status:",          NULL, FALSE},
 526                                    {"X-Status:",        NULL, FALSE},
 527                                    {"From ",            NULL, FALSE},
 528                                    {"X-Face:",          NULL, FALSE},
 529                                    {"Disposition-Notification-To:", NULL, FALSE},
 530                                    {"Return-Receipt-To:", NULL, FALSE},
 531                                    {NULL,               NULL, FALSE}};
 532
 533 static HeaderEntry hentry_short[] = {{"Date:",          NULL, FALSE},
 534                                     {"From:",           NULL, TRUE},
 535                                     {"To:",             NULL, TRUE},
 536                                     {"Cc:",             NULL, TRUE},
 537                                     {"Newsgroups:",     NULL, TRUE},
 538                                     {"Subject:",        NULL, TRUE},
 539                                     {"Message-Id:",     NULL, FALSE},
 540                                     {"References:",     NULL, FALSE},
 541                                     {"In-Reply-To:",    NULL, FALSE},
 542                                     {"Content-Type:",   NULL, FALSE},
 543                                     {"Seen:",           NULL, FALSE},
 544                                     {"Status:",         NULL, FALSE},
 545                                     {"X-Status:",       NULL, FALSE},
 546                                     {"From ",           NULL, FALSE},
 547                                     {NULL,              NULL, FALSE}};
 548
 549 HeaderEntry* procheader_get_headernames(gboolean full)
 550 {
 551         return full ? hentry_full : hentry_short;
 552 }
 553
 554 MsgInfo *procheader_parse_stream(FILE *fp, MsgFlags flags, gboolean full,
 555                                  gboolean decrypted)
 556 {
 557         return parse_stream(fp, FALSE, flags, full, decrypted);
 558 }
 559
 560 static MsgInfo *parse_stream(void *data, gboolean isstring, MsgFlags flags,
 561                              gboolean full, gboolean decrypted)
 562 {
 563         MsgInfo *msginfo;
 564         gchar buf[BUFFSIZE], tmp[BUFFSIZE];
 565         gchar *reference = NULL;
 566         gchar *p;
 567         gchar *hp;
 568         HeaderEntry *hentry;
 569         gint hnum;
 570         get_one_field_func get_one_field =
 571                 isstring ? (get_one_field_func)string_get_one_field
 572                          : (get_one_field_func)procheader_get_one_field;
 573
 574         hentry = procheader_get_headernames(full);
 575
 576         if (MSG_IS_QUEUED(flags) || MSG_IS_DRAFT(flags)) {
 577                 while (get_one_field(buf, sizeof(buf), data, NULL) != -1)
 578                         ; /* loop */
 579         }
 580
 581         msginfo = procmsg_msginfo_new();
 582
 583         if (flags.tmp_flags || flags.perm_flags)
 584                 msginfo->flags = flags;
 585         else
 586                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_NEW | MSG_UNREAD);
 587
 588         if (decrypted)
 589                 MSG_UNSET_TMP_FLAGS(msginfo->flags, MSG_MIME);
 590
 591         msginfo->inreplyto = NULL;
 592
 593         while ((hnum = get_one_field(buf, sizeof(buf), data, hentry))
 594                != -1) {
 595                 hp = buf + strlen(hentry[hnum].name);
 596                 while (*hp == ' ' || *hp == '\t') hp++;
 597
 598                 switch (hnum) {
 599                 case H_DATE:
 600                         if (msginfo->date) break;
 601                         msginfo->date_t =
 602                                 procheader_date_parse(NULL, hp, 0);
 603                         msginfo->date = g_strdup(hp);
 604                         break;
 605                 case H_FROM:
 606                         if (msginfo->from) break;
 607                         conv_unmime_header(tmp, sizeof(tmp), hp, NULL);
 608                         msginfo->from = g_strdup(tmp);
 609                         msginfo->fromname = procheader_get_fromname(tmp);
 610                         break;
 611                 case H_TO:
 612                         conv_unmime_header(tmp, sizeof(tmp), hp, NULL);
 613                         if (msginfo->to) {
 614                                 p = msginfo->to;
 615                                 msginfo->to =
 616                                         g_strconcat(p, ", ", tmp, NULL);
 617                                 g_free(p);
 618                         } else
 619                                 msginfo->to = g_strdup(tmp);
 620                         break;
 621                 case H_CC:
 622                         conv_unmime_header(tmp, sizeof(tmp), hp, NULL);
 623                         if (msginfo->cc) {
 624                                 p = msginfo->cc;
 625                                 msginfo->cc =
 626                                         g_strconcat(p, ", ", tmp, NULL);
 627                                 g_free(p);
 628                         } else
 629                                 msginfo->cc = g_strdup(tmp);
 630                         break;
 631                 case H_NEWSGROUPS:
 632                         if (msginfo->newsgroups) {
 633                                 p = msginfo->newsgroups;
 634                                 msginfo->newsgroups =
 635                                         g_strconcat(p, ",", hp, NULL);
 636                                 g_free(p);
 637                         } else
 638                                 msginfo->newsgroups = g_strdup(hp);
 639                         break;
 640                 case H_SUBJECT:
 641                         if (msginfo->subject) break;
 642                         conv_unmime_header(tmp, sizeof(tmp), hp, NULL);
 643                         msginfo->subject = g_strdup(tmp);
 644                         break;
 645                 case H_MSG_ID:
 646                         if (msginfo->msgid) break;
 647
 648                         extract_parenthesis(hp, '<', '>');
 649                         remove_space(hp);
 650                         msginfo->msgid = g_strdup(hp);
 651                         break;
 652                 case H_REFERENCES:
 653                 case H_IN_REPLY_TO:
 654                         if (!reference) {
 655                                 msginfo->references = g_strdup(hp);
 656                                 eliminate_parenthesis(hp, '(', ')');
 657                                 if ((p = strrchr(hp, '<')) != NULL &&
 658                                     strchr(p + 1, '>') != NULL) {
 659                                         extract_parenthesis(p, '<', '>');
 660                                         remove_space(p);
 661                                         if (*p != '\0')
 662                                                 reference = g_strdup(p);
 663                                 }
 664                         }
 665                         break;
 666                 case H_CONTENT_TYPE:
 667                         if (decrypted) {
 668                                 if (!strncasecmp(hp, "multipart", 9)) {
 669                                         if (strncasecmp(hp, "multipart/signed", 16)) {
 670                                                 MSG_SET_TMP_FLAGS(msginfo->flags,
 671                                                           MSG_MIME);
 672                                         } else {
 673                                                 MSG_SET_TMP_FLAGS(msginfo->flags,
 674                                                           MSG_SIGNED);
 675                                         }
 676                                 }
 677                         }
 678                         else if (!strncasecmp(hp, "multipart/encrypted", 19)) {
 679                                 MSG_SET_TMP_FLAGS(msginfo->flags,
 680                                                   MSG_ENCRYPTED);
 681                         }
 682                         else if (!strncasecmp(hp, "multipart", 9) &&
 683                                    !strncasecmp(hp, "multipart/signed", 16)) {
 684                                 MSG_SET_TMP_FLAGS(msginfo->flags, MSG_SIGNED);
 685                         }
 686                         else if (!strncasecmp(hp, "multipart", 9))
 687                                 MSG_SET_TMP_FLAGS(msginfo->flags, MSG_MIME);
 688                         break;
 689 #ifdef ALLOW_HEADER_HINT
 690                 case H_SEEN:
 691                         /* mnews Seen header */
 692                         MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW|MSG_UNREAD);
 693                         break;
 694 #endif
 695                 case H_X_FACE:
 696                         if (msginfo->xface) break;
 697                         msginfo->xface = g_strdup(hp);
 698                         break;
 699                 case H_DISPOSITION_NOTIFICATION_TO:
 700                         if (msginfo->dispositionnotificationto) break;
 701                         msginfo->dispositionnotificationto = g_strdup(hp);
 702                         break;
 703                 case H_RETURN_RECEIPT_TO:
 704                         if (msginfo->returnreceiptto) break;
 705                         msginfo->returnreceiptto = g_strdup(hp);
 706                         break;
 707 #ifdef ALLOW_HEADER_HINT
 708                 case H_STATUS:
 709                         if (strchr(hp, 'R') != NULL)
 710                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 711                         if (strchr(hp, 'O') != NULL)
 712                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW);
 713                         if (strchr(hp, 'U') != NULL)
 714                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 715                         break;
 716                 case H_X_STATUS:
 717                         if (strchr(hp, 'D') != NULL)
 718                                 MSG_SET_PERM_FLAGS(msginfo->flags,
 719                                               MSG_REALLY_DELETED);
 720                         if (strchr(hp, 'F') != NULL)
 721                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_MARKED);
 722                         if (strchr(hp, 'd') != NULL)
 723                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_DELETED);
 724                         if (strchr(hp, 'r') != NULL)
 725                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_REPLIED);
 726                         if (strchr(hp, 'f') != NULL)
 727                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_FORWARDED);
 728                         break;
 729 #endif
 730                 case H_FROM_SPACE:
 731                         if (msginfo->fromspace) break;
 732                         msginfo->fromspace = g_strdup(hp);
 733                         break;
 734                 default:
 735                         break;
 736                 }
 737         }
 738         msginfo->inreplyto = reference;
 739
 740         return msginfo;
 741 }
 742
 743 gchar *procheader_get_fromname(const gchar *str)
 744 {
 745         gchar *tmp, *name;
 746
 747         Xstrdup_a(tmp, str, return NULL);
 748
 749         if (*tmp == '\"') {
 750                 extract_quote(tmp, '\"');
 751                 g_strstrip(tmp);
 752         } else if (strchr(tmp, '<')) {
 753                 eliminate_parenthesis(tmp, '<', '>');
 754                 g_strstrip(tmp);
 755                 if (*tmp == '\0') {
 756                         strcpy(tmp, str);
 757                         extract_parenthesis(tmp, '<', '>');
 758                         g_strstrip(tmp);
 759                 }
 760         } else if (strchr(tmp, '(')) {
 761                 extract_parenthesis(tmp, '(', ')');
 762                 g_strstrip(tmp);
 763         }
 764
 765         if (*tmp == '\0')
 766                 name = g_strdup(str);
 767         else
 768                 name = g_strdup(tmp);
 769
 770         return name;
 771 }
 772
 773 static gint procheader_scan_date_string(const gchar *str,
 774                                         gchar *weekday, gint *day,
 775                                         gchar *month, gint *year,
 776                                         gint *hh, gint *mm, gint *ss,
 777                                         gchar *zone)
 778 {
 779         gint result;
 780
 781         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d %5s",
 782                         weekday, day, month, year, hh, mm, ss, zone);
 783         if (result == 8) return 0;
 784
 785         result = sscanf(str, "%3s,%d %9s %d %2d:%2d:%2d %5s",
 786                         weekday, day, month, year, hh, mm, ss, zone);
 787         if (result == 8) return 0;
 788
 789         result = sscanf(str, "%d %9s %d %2d:%2d:%2d %5s",
 790                         day, month, year, hh, mm, ss, zone);
 791         if (result == 7) return 0;
 792
 793         *zone = '\0';
 794         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d",
 795                         weekday, day, month, year, hh, mm, ss);
 796         if (result == 7) return 0;
 797
 798         *ss = 0;
 799         result = sscanf(str, "%10s %d %9s %d %2d:%2d %5s",
 800                         weekday, day, month, year, hh, mm, zone);
 801         if (result == 7) return 0;
 802
 803         result = sscanf(str, "%d %9s %d %2d:%2d %5s",
 804                         day, month, year, hh, mm, zone);
 805         if (result == 6) return 0;
 806
 807         return -1;
 808 }
 809
 810 /*
 811  * Hiro, most UNIXen support this function:
 812  * http://www.mcsr.olemiss.edu/cgi-bin/man-cgi?getdate
 813  */
 814 gboolean procheader_date_parse_to_tm(const gchar *src, struct tm *t, char *zone)
 815 {
 816         static gchar monthstr[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
 817         gchar weekday[11];
 818         gint day;
 819         gchar month[10];
 820         gint year;
 821         gint hh, mm, ss;
 822         GDateMonth dmonth;
 823         gchar *p;
 824
 825         if (!t)
 826                 return FALSE;
 827
 828         memset(t, 0, sizeof *t);
 829
 830         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 831                                         &hh, &mm, &ss, zone) < 0) {
 832                 g_warning("Invalid date: %s\n", src);
 833                 return FALSE;
 834         }
 835
 836         /* Y2K compliant :) */
 837         if (year < 100) {
 838                 if (year < 70)
 839                         year += 2000;
 840                 else
 841                         year += 1900;
 842         }
 843
 844         month[3] = '\0';
 845         if ((p = strstr(monthstr, month)) != NULL)
 846                 dmonth = (gint)(p - monthstr) / 3 + 1;
 847         else {
 848                 g_warning("Invalid month: %s\n", month);
 849                 dmonth = G_DATE_BAD_MONTH;
 850         }
 851
 852         t->tm_sec = ss;
 853         t->tm_min = mm;
 854         t->tm_hour = hh;
 855         t->tm_mday = day;
 856         t->tm_mon = dmonth - 1;
 857         t->tm_year = year - 1900;
 858         t->tm_wday = 0;
 859         t->tm_yday = 0;
 860         t->tm_isdst = -1;
 861
 862         mktime(t);
 863
 864         return TRUE;
 865 }
 866
 867 time_t procheader_date_parse(gchar *dest, const gchar *src, gint len)
 868 {
 869         static gchar monthstr[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
 870         gchar weekday[11];
 871         gint day;
 872         gchar month[10];
 873         gint year;
 874         gint hh, mm, ss;
 875         gchar zone[6];
 876         GDateMonth dmonth = G_DATE_BAD_MONTH;
 877         struct tm t;
 878         gchar *p;
 879         time_t timer;
 880         time_t tz_offset;
 881
 882         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 883                                         &hh, &mm, &ss, zone) < 0) {
 884                 g_warning("Invalid date: %s\n", src);
 885                 if (dest && len > 0)
 886                         strncpy2(dest, src, len);
 887                 return 0;
 888         }
 889
 890         /* Y2K compliant :) */
 891         if (year < 1000) {
 892                 if (year < 50)
 893                         year += 2000;
 894                 else
 895                         year += 1900;
 896         }
 897
 898         month[3] = '\0';
 899         for (p = monthstr; *p != '\0'; p += 3) {
 900                 if (!strncasecmp(p, month, 3)) {
 901                         dmonth = (gint)(p - monthstr) / 3 + 1;
 902                         break;
 903                 }
 904         }
 905         if (*p == '\0')
 906                 g_warning("Invalid month: %s\n", month);
 907
 908         t.tm_sec = ss;
 909         t.tm_min = mm;
 910         t.tm_hour = hh;
 911         t.tm_mday = day;
 912         t.tm_mon = dmonth - 1;
 913         t.tm_year = year - 1900;
 914         t.tm_wday = 0;
 915         t.tm_yday = 0;
 916         t.tm_isdst = -1;
 917
 918         timer = mktime(&t);
 919         tz_offset = remote_tzoffset_sec(zone);
 920         if (tz_offset != -1)
 921                 timer += tzoffset_sec(&timer) - tz_offset;
 922
 923         if (dest)
 924                 procheader_date_get_localtime(dest, len, timer);
 925
 926         return timer;
 927 }
 928
 929 void procheader_date_get_localtime(gchar *dest, gint len, const time_t timer)
 930 {
 931         struct tm *lt;
 932         gchar *default_format = "%y/%m/%d(%a) %H:%M";
 933
 934         lt = localtime(&timer);
 935
 936         if (prefs_common.date_format)
 937                 strftime(dest, len, prefs_common.date_format, lt);
 938         else
 939                 strftime(dest, len, default_format, lt);
 940 }
 941
 942 /* Added by Mel Hadasht on 27 Aug 2001 */
 943 /* Get a header from msginfo */
 944 gint procheader_get_header_from_msginfo(MsgInfo *msginfo, gchar *buf, gint len, gchar *header)
 945 {
 946         gchar *file;
 947         FILE *fp;
 948         HeaderEntry hentry[]={ { header, NULL, TRUE  },
 949                                { NULL,   NULL, FALSE } };
 950         gint val;
 951
 952         g_return_val_if_fail(msginfo != NULL, -1);
 953         file = procmsg_get_message_file_path(msginfo);
 954         if ((fp = fopen(file, "rb")) == NULL) {
 955                FILE_OP_ERROR(file, "fopen");
 956                g_free(file);
 957                return -1;
 958         }
 959         val = procheader_get_one_field(buf,len, fp, hentry);
 960         if (fclose(fp) == EOF) {
 961                 FILE_OP_ERROR(file, "fclose");
 962                 unlink(file);
 963                 g_free(file);
 964                 return -1;
 965         }
 966
 967         g_free(file);
 968         if (val == -1)
 969                 return -1;
 970
 971         return 0;
 972 }