src/procheader.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2004 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 #include <sys/stat.h>
  30
  31 #include "intl.h"
  32 #include "procheader.h"
  33 #include "procmsg.h"
  34 #include "codeconv.h"
  35 #include "prefs_common.h"
  36 #include "utils.h"
  37
  38 #define BUFFSIZE        8192
  39
  40 typedef char *(*getlinefunc)(char *, int, void *);
  41 typedef int (*peekcharfunc)(void *);
  42 typedef int (*getcharfunc)(void *);
  43 typedef gint (*get_one_field_func)(gchar *, gint, void *, HeaderEntry[]);
  44
  45 static gint string_get_one_field(gchar *buf, gint len, char **str,
  46                                  HeaderEntry hentry[]);
  47
  48 static char *string_getline(char *buf, int len, char **str);
  49 static int string_peekchar(char **str);
  50 static int file_peekchar(FILE *fp);
  51 static gint generic_get_one_field(gchar *buf, gint len, void *data,
  52                                   HeaderEntry hentry[],
  53                                   getlinefunc getline,
  54                                   peekcharfunc peekchar,
  55                                   gboolean unfold);
  56 static MsgInfo *parse_stream(void *data, gboolean isstring, MsgFlags flags,
  57                              gboolean full, gboolean decrypted);
  58
  59
  60 gint procheader_get_one_field(gchar *buf, gint len, FILE *fp,
  61                               HeaderEntry hentry[])
  62 {
  63         return generic_get_one_field(buf, len, fp, hentry,
  64                                      (getlinefunc)fgets, (peekcharfunc)file_peekchar,
  65                                      TRUE);
  66 }
  67
  68 static gint string_get_one_field(gchar *buf, gint len, char **str,
  69                                  HeaderEntry hentry[])
  70 {
  71         return generic_get_one_field(buf, len, str, hentry,
  72                                      (getlinefunc)string_getline,
  73                                      (peekcharfunc)string_peekchar,
  74                                      TRUE);
  75 }
  76
  77 static char *string_getline(char *buf, int len, char **str)
  78 {
  79         if (!**str)
  80                 return NULL;
  81
  82         for (; **str && len > 1; --len)
  83                 if ((*buf++ = *(*str)++) == '\n')
  84                     break;
  85         *buf = '\0';
  86
  87         return buf;
  88 }
  89
  90 static int string_peekchar(char **str)
  91 {
  92         return **str;
  93 }
  94
  95 static int file_peekchar(FILE *fp)
  96 {
  97         return ungetc(getc(fp), fp);
  98 }
  99
 100 static gint generic_get_one_field(gchar *buf, gint len, void *data,
 101                           HeaderEntry *hentry,
 102                           getlinefunc getline, peekcharfunc peekchar,
 103                           gboolean unfold)
 104 {
 105         gint nexthead;
 106         gint hnum = 0;
 107         HeaderEntry *hp = NULL;
 108
 109         if (hentry != NULL) {
 110                 /* skip non-required headers */
 111                 do {
 112                         do {
 113                                 if (getline(buf, len, data) == NULL)
 114                                         return -1;
 115                                 if (buf[0] == '\r' || buf[0] == '\n')
 116                                         return -1;
 117                         } while (buf[0] == ' ' || buf[0] == '\t');
 118
 119                         for (hp = hentry, hnum = 0; hp->name != NULL;
 120                              hp++, hnum++) {
 121                                 if (!g_strncasecmp(hp->name, buf,
 122                                                  strlen(hp->name)))
 123                                         break;
 124                         }
 125                 } while (hp->name == NULL);
 126         } else {
 127                 if (getline(buf, len, data) == NULL) return -1;
 128                 if (buf[0] == '\r' || buf[0] == '\n') return -1;
 129         }
 130
 131         /* unfold line */
 132         while (1) {
 133                 nexthead = peekchar(data);
 134                 /* ([*WSP CRLF] 1*WSP) */
 135                 if (nexthead == ' ' || nexthead == '\t') {
 136                         size_t buflen;
 137                         /* trim previous trailing \n if requesting one header or
 138                          * unfolding was requested */
 139                         if ((!hentry && unfold) || (hp && hp->unfold))
 140                                 strretchomp(buf);
 141
 142                         buflen = strlen(buf);
 143
 144                         /* concatenate next line */
 145                         if ((len - buflen) > 2) {
 146                                 if (getline(buf + buflen, len - buflen, data) == NULL)
 147                                         break;
 148                         } else
 149                                 break;
 150                 } else {
 151                         /* remove trailing new line */
 152                         strretchomp(buf);
 153                         break;
 154                 }
 155         }
 156
 157         return hnum;
 158 }
 159
 160 gint procheader_get_one_field_asis(gchar *buf, gint len, FILE *fp)
 161 {
 162         return generic_get_one_field(buf, len, fp, NULL,
 163                                      (getlinefunc)fgets,
 164                                      (peekcharfunc)file_peekchar,
 165                                      FALSE);
 166 }
 167
 168 #if 0
 169 gchar *procheader_get_unfolded_line(gchar *buf, gint len, FILE *fp)
 170 {
 171         gboolean folded = FALSE;
 172         gint nexthead;
 173         gchar *bufp;
 174
 175         if (fgets(buf, len, fp) == NULL) return NULL;
 176         if (buf[0] == '\r' || buf[0] == '\n') return NULL;
 177         bufp = buf + strlen(buf);
 178
 179         for (; bufp > buf &&
 180              (*(bufp - 1) == '\n' || *(bufp - 1) == '\r');
 181              bufp--)
 182                 *(bufp - 1) = '\0';
 183
 184         while (1) {
 185                 nexthead = fgetc(fp);
 186
 187                 /* folded */
 188                 if (nexthead == ' ' || nexthead == '\t')
 189                         folded = TRUE;
 190                 else if (nexthead == EOF)
 191                         break;
 192                 else if (folded == TRUE) {
 193                         if (nexthead == '\r' || nexthead == '\n') {
 194                                 folded = FALSE;
 195                                 continue;
 196                         }
 197
 198                         if ((len - (bufp - buf)) <= 2) break;
 199
 200                         /* replace return code on the tail end
 201                            with space */
 202                         *bufp++ = ' ';
 203                         *bufp++ = nexthead;
 204                         *bufp = '\0';
 205
 206                         /* concatenate next line */
 207                         if (fgets(bufp, len - (bufp - buf), fp)
 208                             == NULL) break;
 209                         bufp += strlen(bufp);
 210
 211                         for (; bufp > buf &&
 212                              (*(bufp - 1) == '\n' || *(bufp - 1) == '\r');
 213                              bufp--)
 214                                 *(bufp - 1) = '\0';
 215
 216                         folded = FALSE;
 217                 } else {
 218                         ungetc(nexthead, fp);
 219                         break;
 220                 }
 221         }
 222
 223         /* remove trailing return code */
 224         strretchomp(buf);
 225
 226         return buf;
 227 }
 228 #endif
 229
 230 #if 0
 231 GSList *procheader_get_header_list_from_file(const gchar *file)
 232 {
 233         FILE *fp;
 234         GSList *hlist;
 235
 236         if ((fp = fopen(file, "rb")) == NULL) {
 237                 FILE_OP_ERROR(file, "fopen");
 238                 return NULL;
 239         }
 240
 241         hlist = procheader_get_header_list(fp);
 242
 243         fclose(fp);
 244         return hlist;
 245 }
 246
 247 GSList *procheader_get_header_list(FILE *fp)
 248 {
 249         gchar buf[BUFFSIZE];
 250         GSList *hlist = NULL;
 251         Header *header;
 252
 253         g_return_val_if_fail(fp != NULL, NULL);
 254
 255         while (procheader_get_unfolded_line(buf, sizeof(buf), fp) != NULL) {
 256                 if ((header = procheader_parse_header(buf)) != NULL)
 257                         hlist = g_slist_append(hlist, header);
 258                 /*
 259                 if (*buf == ':') continue;
 260                 for (p = buf; *p && *p != ' '; p++) {
 261                         if (*p == ':') {
 262                                 header = g_new(Header, 1);
 263                                 header->name = g_strndup(buf, p - buf);
 264                                 p++;
 265                                 while (*p == ' ' || *p == '\t') p++;
 266                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 267                                 header->body = g_strdup(tmp);
 268
 269                                 hlist = g_slist_append(hlist, header);
 270                                 break;
 271                         }
 272                 }
 273                 */
 274         }
 275
 276         return hlist;
 277 }
 278 #endif
 279
 280 #if 0
 281 GPtrArray *procheader_get_header_array(FILE *fp)
 282 {
 283         gchar buf[BUFFSIZE];
 284         GPtrArray *headers;
 285         Header *header;
 286
 287         g_return_val_if_fail(fp != NULL, NULL);
 288
 289         headers = g_ptr_array_new();
 290
 291         while (procheader_get_unfolded_line(buf, sizeof(buf), fp) != NULL) {
 292                 if ((header = procheader_parse_header(buf)) != NULL)
 293                         g_ptr_array_add(headers, header);
 294                 /*
 295                 if (*buf == ':') continue;
 296                 for (p = buf; *p && *p != ' '; p++) {
 297                         if (*p == ':') {
 298                                 header = g_new(Header, 1);
 299                                 header->name = g_strndup(buf, p - buf);
 300                                 p++;
 301                                 while (*p == ' ' || *p == '\t') p++;
 302                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 303                                 header->body = g_strdup(tmp);
 304
 305                                 g_ptr_array_add(headers, header);
 306                                 break;
 307                         }
 308                 }
 309                 */
 310         }
 311
 312         return headers;
 313 }
 314 #endif
 315
 316 GPtrArray *procheader_get_header_array_asis(FILE *fp)
 317 {
 318         gchar buf[BUFFSIZE];
 319         GPtrArray *headers;
 320         Header *header;
 321
 322         g_return_val_if_fail(fp != NULL, NULL);
 323
 324         headers = g_ptr_array_new();
 325
 326         while (procheader_get_one_field_asis(buf, sizeof(buf), fp) != -1) {
 327                 if ((header = procheader_parse_header(buf)) != NULL)
 328                         g_ptr_array_add(headers, header);
 329                         /*
 330                 if (*buf == ':') continue;
 331                 for (p = buf; *p && *p != ' '; p++) {
 332                         if (*p == ':') {
 333                                 header = g_new(Header, 1);
 334                                 header->name = g_strndup(buf, p - buf);
 335                                 p++;
 336                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 337                                 header->body = g_strdup(tmp);
 338
 339                                 g_ptr_array_add(headers, header);
 340                                 break;
 341                         }
 342                 }
 343                         */
 344         }
 345
 346         return headers;
 347 }
 348
 349 #if 0
 350 void procheader_header_list_destroy(GSList *hlist)
 351 {
 352         Header *header;
 353
 354         while (hlist != NULL) {
 355                 header = hlist->data;
 356                 procheader_header_free(header);
 357                 hlist = g_slist_remove(hlist, header);
 358         }
 359 }
 360 #endif
 361
 362 void procheader_header_array_destroy(GPtrArray *harray)
 363 {
 364         gint i;
 365         Header *header;
 366
 367         for (i = 0; i < harray->len; i++) {
 368                 header = g_ptr_array_index(harray, i);
 369                 procheader_header_free(header);
 370         }
 371
 372         g_ptr_array_free(harray, TRUE);
 373 }
 374
 375 void procheader_header_free(Header *header)
 376 {
 377         if (!header) return;
 378
 379         g_free(header->name);
 380         g_free(header->body);
 381         g_free(header);
 382 }
 383
 384 /*
 385   tests whether two headers' names are equal
 386   remove the trailing ':' or ' ' before comparing
 387 */
 388
 389 gboolean procheader_headername_equal(char * hdr1, char * hdr2)
 390 {
 391         int len1;
 392         int len2;
 393
 394         len1 = strlen(hdr1);
 395         len2 = strlen(hdr2);
 396         if (hdr1[len1 - 1] == ':')
 397                 len1--;
 398         if (hdr2[len2 - 1] == ':')
 399                 len2--;
 400         if (len1 != len2)
 401                 return 0;
 402
 403         return (g_strncasecmp(hdr1, hdr2, len1) == 0);
 404 }
 405
 406 /*
 407   parse headers, for example :
 408   From: dinh@enseirb.fr becomes :
 409   header->name = "From:"
 410   header->body = "dinh@enseirb.fr"
 411  */
 412
 413 Header * procheader_parse_header(gchar * buf)
 414 {
 415         gchar tmp[BUFFSIZE];
 416         gchar *p = buf;
 417         Header * header;
 418
 419         if ((*buf == ':') || (*buf == ' '))
 420                 return NULL;
 421
 422         for (p = buf; *p ; p++) {
 423                 if ((*p == ':') || (*p == ' ')) {
 424                         header = g_new(Header, 1);
 425                         header->name = g_strndup(buf, p - buf + 1);
 426                         p++;
 427                         while (*p == ' ' || *p == '\t') p++;
 428                         conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 429                         if(tmp == NULL)
 430                                 header->body = g_strdup(p);
 431                         else
 432                                 header->body = g_strdup(tmp);
 433                         return header;
 434                 }
 435         }
 436         return NULL;
 437 }
 438
 439 void procheader_get_header_fields(FILE *fp, HeaderEntry hentry[])
 440 {
 441         gchar buf[BUFFSIZE];
 442         HeaderEntry *hp;
 443         gint hnum;
 444         gchar *p;
 445
 446         if (hentry == NULL) return;
 447
 448         while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, hentry))
 449                != -1) {
 450                 hp = hentry + hnum;
 451
 452                 p = buf + strlen(hp->name);
 453                 while (*p == ' ' || *p == '\t') p++;
 454
 455                 if (hp->body == NULL)
 456                         hp->body = g_strdup(p);
 457                 else if (procheader_headername_equal(hp->name, "To") ||
 458                          procheader_headername_equal(hp->name, "Cc")) {
 459                         gchar *tp = hp->body;
 460                         hp->body = g_strconcat(tp, ", ", p, NULL);
 461                         g_free(tp);
 462                 }
 463         }
 464 }
 465
 466 MsgInfo *procheader_parse_file(const gchar *file, MsgFlags flags,
 467                                gboolean full, gboolean decrypted)
 468 {
 469         struct stat s;
 470         FILE *fp;
 471         MsgInfo *msginfo;
 472
 473         if (stat(file, &s) < 0) {
 474                 FILE_OP_ERROR(file, "stat");
 475                 return NULL;
 476         }
 477         if (!S_ISREG(s.st_mode))
 478                 return NULL;
 479
 480         if ((fp = fopen(file, "rb")) == NULL) {
 481                 FILE_OP_ERROR(file, "fopen");
 482                 return NULL;
 483         }
 484
 485         msginfo = procheader_parse_stream(fp, flags, full, decrypted);
 486         fclose(fp);
 487
 488         if (msginfo) {
 489                 msginfo->size = s.st_size;
 490                 msginfo->mtime = s.st_mtime;
 491         }
 492
 493         return msginfo;
 494 }
 495
 496 MsgInfo *procheader_parse_str(const gchar *str, MsgFlags flags, gboolean full,
 497                               gboolean decrypted)
 498 {
 499         return parse_stream(&str, TRUE, flags, full, decrypted);
 500 }
 501
 502 enum
 503 {
 504         H_DATE          = 0,
 505         H_FROM          = 1,
 506         H_TO            = 2,
 507         H_CC            = 3,
 508         H_NEWSGROUPS    = 4,
 509         H_SUBJECT       = 5,
 510         H_MSG_ID        = 6,
 511         H_REFERENCES    = 7,
 512         H_IN_REPLY_TO   = 8,
 513         H_CONTENT_TYPE  = 9,
 514         H_SEEN          = 10,
 515         H_STATUS        = 11,
 516         H_X_STATUS      = 12,
 517         H_FROM_SPACE    = 13,
 518         H_SC_PLANNED_DOWNLOAD = 14,
 519         H_SC_MESSAGE_SIZE = 15,
 520         H_X_FACE        = 16,
 521         H_DISPOSITION_NOTIFICATION_TO = 17,
 522         H_RETURN_RECEIPT_TO = 18,
 523         H_SC_PARTIALLY_RETRIEVED = 19,
 524         H_SC_ACCOUNT_SERVER = 20,
 525         H_SC_ACCOUNT_LOGIN = 21,
 526 };
 527
 528 static HeaderEntry hentry_full[] = {{"Date:",           NULL, FALSE},
 529                                    {"From:",            NULL, TRUE},
 530                                    {"To:",              NULL, TRUE},
 531                                    {"Cc:",              NULL, TRUE},
 532                                    {"Newsgroups:",      NULL, TRUE},
 533                                    {"Subject:",         NULL, TRUE},
 534                                    {"Message-ID:",      NULL, FALSE},
 535                                    {"References:",      NULL, FALSE},
 536                                    {"In-Reply-To:",     NULL, FALSE},
 537                                    {"Content-Type:",    NULL, FALSE},
 538                                    {"Seen:",            NULL, FALSE},
 539                                    {"Status:",          NULL, FALSE},
 540                                    {"X-Status:",        NULL, FALSE},
 541                                    {"From ",            NULL, FALSE},
 542                                    {"SC-Marked-For-Download:", NULL, FALSE},
 543                                    {"SC-Message-Size:", NULL, FALSE},
 544                                    {"X-Face:",          NULL, FALSE},
 545                                    {"Disposition-Notification-To:", NULL, FALSE},
 546                                    {"Return-Receipt-To:", NULL, FALSE},
 547                                    {"SC-Partially-Retrieved:", NULL, FALSE},
 548                                    {"SC-Account-Server:", NULL, FALSE},
 549                                    {"SC-Account-Login:",NULL, FALSE},
 550                                    {NULL,               NULL, FALSE}};
 551
 552 static HeaderEntry hentry_short[] = {{"Date:",          NULL, FALSE},
 553                                     {"From:",           NULL, TRUE},
 554                                     {"To:",             NULL, TRUE},
 555                                     {"Cc:",             NULL, TRUE},
 556                                     {"Newsgroups:",     NULL, TRUE},
 557                                     {"Subject:",        NULL, TRUE},
 558                                     {"Message-ID:",     NULL, FALSE},
 559                                     {"References:",     NULL, FALSE},
 560                                     {"In-Reply-To:",    NULL, FALSE},
 561                                     {"Content-Type:",   NULL, FALSE},
 562                                     {"Seen:",           NULL, FALSE},
 563                                     {"Status:",         NULL, FALSE},
 564                                     {"X-Status:",       NULL, FALSE},
 565                                     {"From ",           NULL, FALSE},
 566                                     {"SC-Marked-For-Download:", NULL, FALSE},
 567                                     {"SC-Message-Size:",NULL, FALSE},
 568                                     {NULL,              NULL, FALSE}};
 569
 570 HeaderEntry* procheader_get_headernames(gboolean full)
 571 {
 572         return full ? hentry_full : hentry_short;
 573 }
 574
 575 MsgInfo *procheader_parse_stream(FILE *fp, MsgFlags flags, gboolean full,
 576                                  gboolean decrypted)
 577 {
 578         return parse_stream(fp, FALSE, flags, full, decrypted);
 579 }
 580
 581 static MsgInfo *parse_stream(void *data, gboolean isstring, MsgFlags flags,
 582                              gboolean full, gboolean decrypted)
 583 {
 584         MsgInfo *msginfo;
 585         gchar buf[BUFFSIZE], tmp[BUFFSIZE];
 586         gchar *reference = NULL;
 587         gchar *p;
 588         gchar *hp;
 589         HeaderEntry *hentry;
 590         gint hnum;
 591         get_one_field_func get_one_field =
 592                 isstring ? (get_one_field_func)string_get_one_field
 593                          : (get_one_field_func)procheader_get_one_field;
 594
 595         hentry = procheader_get_headernames(full);
 596
 597         if (MSG_IS_QUEUED(flags) || MSG_IS_DRAFT(flags)) {
 598                 while (get_one_field(buf, sizeof(buf), data, NULL) != -1)
 599                         ; /* loop */
 600         }
 601
 602         msginfo = procmsg_msginfo_new();
 603
 604         if (flags.tmp_flags || flags.perm_flags)
 605                 msginfo->flags = flags;
 606         else
 607                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_NEW | MSG_UNREAD);
 608
 609         msginfo->inreplyto = NULL;
 610
 611         while ((hnum = get_one_field(buf, sizeof(buf), data, hentry))
 612                != -1) {
 613                 hp = buf + strlen(hentry[hnum].name);
 614                 while (*hp == ' ' || *hp == '\t') hp++;
 615
 616                 switch (hnum) {
 617                 case H_DATE:
 618                         if (msginfo->date) break;
 619                         msginfo->date_t =
 620                                 procheader_date_parse(NULL, hp, 0);
 621                         msginfo->date = g_strdup(hp);
 622                         break;
 623                 case H_FROM:
 624                         if (msginfo->from) break;
 625                         conv_unmime_header(tmp, sizeof(tmp), hp, NULL);
 626                         msginfo->from = g_strdup(tmp);
 627                         msginfo->fromname = procheader_get_fromname(tmp);
 628                         break;
 629                 case H_TO:
 630                         conv_unmime_header(tmp, sizeof(tmp), hp, NULL);
 631                         if (msginfo->to) {
 632                                 p = msginfo->to;
 633                                 msginfo->to =
 634                                         g_strconcat(p, ", ", tmp, NULL);
 635                                 g_free(p);
 636                         } else
 637                                 msginfo->to = g_strdup(tmp);
 638                         break;
 639                 case H_CC:
 640                         conv_unmime_header(tmp, sizeof(tmp), hp, NULL);
 641                         if (msginfo->cc) {
 642                                 p = msginfo->cc;
 643                                 msginfo->cc =
 644                                         g_strconcat(p, ", ", tmp, NULL);
 645                                 g_free(p);
 646                         } else
 647                                 msginfo->cc = g_strdup(tmp);
 648                         break;
 649                 case H_NEWSGROUPS:
 650                         if (msginfo->newsgroups) {
 651                                 p = msginfo->newsgroups;
 652                                 msginfo->newsgroups =
 653                                         g_strconcat(p, ",", hp, NULL);
 654                                 g_free(p);
 655                         } else
 656                                 msginfo->newsgroups = g_strdup(hp);
 657                         break;
 658                 case H_SUBJECT:
 659                         if (msginfo->subject) break;
 660                         conv_unmime_header(tmp, sizeof(tmp), hp, NULL);
 661                         msginfo->subject = g_strdup(tmp);
 662                         break;
 663                 case H_MSG_ID:
 664                         if (msginfo->msgid) break;
 665
 666                         extract_parenthesis(hp, '<', '>');
 667                         remove_space(hp);
 668                         msginfo->msgid = g_strdup(hp);
 669                         break;
 670                 case H_REFERENCES:
 671                 case H_IN_REPLY_TO:
 672                         if (!reference) {
 673                                 msginfo->references = g_strdup(hp);
 674                                 eliminate_parenthesis(hp, '(', ')');
 675                                 if ((p = strrchr(hp, '<')) != NULL &&
 676                                     strchr(p + 1, '>') != NULL) {
 677                                         extract_parenthesis(p, '<', '>');
 678                                         remove_space(p);
 679                                         if (*p != '\0')
 680                                                 reference = g_strdup(p);
 681                                 }
 682                         }
 683                         break;
 684                 case H_CONTENT_TYPE:
 685                         if (!g_strncasecmp(hp, "multipart/", 10))
 686                                 MSG_SET_TMP_FLAGS(msginfo->flags, MSG_MULTIPART);
 687                         break;
 688 #ifdef ALLOW_HEADER_HINT
 689                 case H_SEEN:
 690                         /* mnews Seen header */
 691                         MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW|MSG_UNREAD);
 692                         break;
 693 #endif
 694                 case H_X_FACE:
 695                         if (msginfo->xface) break;
 696                         msginfo->xface = g_strdup(hp);
 697                         break;
 698                 case H_DISPOSITION_NOTIFICATION_TO:
 699                         if (msginfo->dispositionnotificationto) break;
 700                         msginfo->dispositionnotificationto = g_strdup(hp);
 701                         break;
 702                 case H_RETURN_RECEIPT_TO:
 703                         if (msginfo->returnreceiptto) break;
 704                         msginfo->returnreceiptto = g_strdup(hp);
 705                         break;
 706                 case H_SC_PARTIALLY_RETRIEVED:
 707                         if (msginfo->partial_recv) break;
 708                         msginfo->partial_recv = g_strdup(hp);
 709                         break;
 710                 case H_SC_ACCOUNT_SERVER:
 711                         if (msginfo->account_server) break;
 712                         msginfo->account_server = g_strdup(hp);
 713                         break;
 714                 case H_SC_ACCOUNT_LOGIN:
 715                         if (msginfo->account_login) break;
 716                         msginfo->account_login = g_strdup(hp);
 717                         break;
 718                 case H_SC_MESSAGE_SIZE:
 719                         if (msginfo->total_size) break;
 720                         msginfo->total_size = atoi(hp);
 721                         break;
 722                 case H_SC_PLANNED_DOWNLOAD:
 723                         msginfo->planned_download = atoi(hp);
 724                         break;
 725 #ifdef ALLOW_HEADER_HINT
 726                 case H_STATUS:
 727                         if (strchr(hp, 'R') != NULL)
 728                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 729                         if (strchr(hp, 'O') != NULL)
 730                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW);
 731                         if (strchr(hp, 'U') != NULL)
 732                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 733                         break;
 734                 case H_X_STATUS:
 735                         if (strchr(hp, 'D') != NULL)
 736                                 MSG_SET_PERM_FLAGS(msginfo->flags,
 737                                               MSG_REALLY_DELETED);
 738                         if (strchr(hp, 'F') != NULL)
 739                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_MARKED);
 740                         if (strchr(hp, 'd') != NULL)
 741                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_DELETED);
 742                         if (strchr(hp, 'r') != NULL)
 743                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_REPLIED);
 744                         if (strchr(hp, 'f') != NULL)
 745                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_FORWARDED);
 746                         break;
 747 #endif
 748                 case H_FROM_SPACE:
 749                         if (msginfo->fromspace) break;
 750                         msginfo->fromspace = g_strdup(hp);
 751                         break;
 752                 default:
 753                         break;
 754                 }
 755         }
 756         msginfo->inreplyto = reference;
 757
 758         return msginfo;
 759 }
 760
 761 gchar *procheader_get_fromname(const gchar *str)
 762 {
 763         gchar *tmp, *name;
 764
 765         Xstrdup_a(tmp, str, return NULL);
 766
 767         if (*tmp == '\"') {
 768                 extract_quote(tmp, '\"');
 769                 g_strstrip(tmp);
 770         } else if (strchr(tmp, '<')) {
 771                 eliminate_parenthesis(tmp, '<', '>');
 772                 g_strstrip(tmp);
 773                 if (*tmp == '\0') {
 774                         strcpy(tmp, str);
 775                         extract_parenthesis(tmp, '<', '>');
 776                         g_strstrip(tmp);
 777                 }
 778         } else if (strchr(tmp, '(')) {
 779                 extract_parenthesis(tmp, '(', ')');
 780                 g_strstrip(tmp);
 781         }
 782
 783         if (*tmp == '\0')
 784                 name = g_strdup(str);
 785         else
 786                 name = g_strdup(tmp);
 787
 788         return name;
 789 }
 790
 791 static gint procheader_scan_date_string(const gchar *str,
 792                                         gchar *weekday, gint *day,
 793                                         gchar *month, gint *year,
 794                                         gint *hh, gint *mm, gint *ss,
 795                                         gchar *zone)
 796 {
 797         gint result;
 798
 799         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d %5s",
 800                         weekday, day, month, year, hh, mm, ss, zone);
 801         if (result == 8) return 0;
 802
 803         result = sscanf(str, "%3s,%d %9s %d %2d:%2d:%2d %5s",
 804                         weekday, day, month, year, hh, mm, ss, zone);
 805         if (result == 8) return 0;
 806
 807         result = sscanf(str, "%d %9s %d %2d:%2d:%2d %5s",
 808                         day, month, year, hh, mm, ss, zone);
 809         if (result == 7) return 0;
 810
 811         *zone = '\0';
 812         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d",
 813                         weekday, day, month, year, hh, mm, ss);
 814         if (result == 7) return 0;
 815
 816         *ss = 0;
 817         result = sscanf(str, "%10s %d %9s %d %2d:%2d %5s",
 818                         weekday, day, month, year, hh, mm, zone);
 819         if (result == 7) return 0;
 820
 821         result = sscanf(str, "%d %9s %d %2d:%2d %5s",
 822                         day, month, year, hh, mm, zone);
 823         if (result == 6) return 0;
 824
 825         return -1;
 826 }
 827
 828 /*
 829  * Hiro, most UNIXen support this function:
 830  * http://www.mcsr.olemiss.edu/cgi-bin/man-cgi?getdate
 831  */
 832 gboolean procheader_date_parse_to_tm(const gchar *src, struct tm *t, char *zone)
 833 {
 834         static gchar monthstr[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
 835         gchar weekday[11];
 836         gint day;
 837         gchar month[10];
 838         gint year;
 839         gint hh, mm, ss;
 840         GDateMonth dmonth;
 841         gchar *p;
 842
 843         if (!t)
 844                 return FALSE;
 845
 846         memset(t, 0, sizeof *t);
 847
 848         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 849                                         &hh, &mm, &ss, zone) < 0) {
 850                 g_warning("Invalid date: %s\n", src);
 851                 return FALSE;
 852         }
 853
 854         /* Y2K compliant :) */
 855         if (year < 100) {
 856                 if (year < 70)
 857                         year += 2000;
 858                 else
 859                         year += 1900;
 860         }
 861
 862         month[3] = '\0';
 863         if ((p = strstr(monthstr, month)) != NULL)
 864                 dmonth = (gint)(p - monthstr) / 3 + 1;
 865         else {
 866                 g_warning("Invalid month: %s\n", month);
 867                 dmonth = G_DATE_BAD_MONTH;
 868         }
 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         mktime(t);
 881
 882         return TRUE;
 883 }
 884
 885 time_t procheader_date_parse(gchar *dest, const gchar *src, gint len)
 886 {
 887         static gchar monthstr[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
 888         gchar weekday[11];
 889         gint day;
 890         gchar month[10];
 891         gint year;
 892         gint hh, mm, ss;
 893         gchar zone[6];
 894         GDateMonth dmonth = G_DATE_BAD_MONTH;
 895         struct tm t;
 896         gchar *p;
 897         time_t timer;
 898         time_t tz_offset;
 899
 900         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 901                                         &hh, &mm, &ss, zone) < 0) {
 902                 g_warning("Invalid date: %s\n", src);
 903                 if (dest && len > 0)
 904                         strncpy2(dest, src, len);
 905                 return 0;
 906         }
 907
 908         /* Y2K compliant :) */
 909         if (year < 1000) {
 910                 if (year < 50)
 911                         year += 2000;
 912                 else
 913                         year += 1900;
 914         }
 915
 916         month[3] = '\0';
 917         for (p = monthstr; *p != '\0'; p += 3) {
 918                 if (!g_strncasecmp(p, month, 3)) {
 919                         dmonth = (gint)(p - monthstr) / 3 + 1;
 920                         break;
 921                 }
 922         }
 923         if (*p == '\0')
 924                 g_warning("Invalid month: %s\n", month);
 925
 926         t.tm_sec = ss;
 927         t.tm_min = mm;
 928         t.tm_hour = hh;
 929         t.tm_mday = day;
 930         t.tm_mon = dmonth - 1;
 931         t.tm_year = year - 1900;
 932         t.tm_wday = 0;
 933         t.tm_yday = 0;
 934         t.tm_isdst = -1;
 935
 936         timer = mktime(&t);
 937         tz_offset = remote_tzoffset_sec(zone);
 938         if (tz_offset != -1)
 939                 timer += tzoffset_sec(&timer) - tz_offset;
 940
 941         if (dest)
 942                 procheader_date_get_localtime(dest, len, timer);
 943
 944         return timer;
 945 }
 946
 947 void procheader_date_get_localtime(gchar *dest, gint len, const time_t timer)
 948 {
 949         struct tm *lt;
 950         gchar *default_format = "%y/%m/%d(%a) %H:%M";
 951
 952         lt = localtime(&timer);
 953
 954         if (prefs_common.date_format)
 955                 strftime(dest, len, prefs_common.date_format, lt);
 956         else
 957                 strftime(dest, len, default_format, lt);
 958 }
 959
 960 /* Added by Mel Hadasht on 27 Aug 2001 */
 961 /* Get a header from msginfo */
 962 gint procheader_get_header_from_msginfo(MsgInfo *msginfo, gchar *buf, gint len, gchar *header)
 963 {
 964         gchar *file;
 965         FILE *fp;
 966         HeaderEntry hentry[]={ { NULL, NULL, TRUE  },
 967                                { NULL, NULL, FALSE } };
 968         gint val;
 969
 970         hentry[0].name = header;
 971
 972         g_return_val_if_fail(msginfo != NULL, -1);
 973         file = procmsg_get_message_file_path(msginfo);
 974         if ((fp = fopen(file, "rb")) == NULL) {
 975                FILE_OP_ERROR(file, "fopen");
 976                g_free(file);
 977                return -1;
 978         }
 979         val = procheader_get_one_field(buf,len, fp, hentry);
 980         if (fclose(fp) == EOF) {
 981                 FILE_OP_ERROR(file, "fclose");
 982                 unlink(file);
 983                 g_free(file);
 984                 return -1;
 985         }
 986
 987         g_free(file);
 988         if (val == -1)
 989                 return -1;
 990
 991         return 0;
 992 }