src/procheader.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2006 Hiroyuki Yamamoto and the Sylpheed-Claws team
   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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include <glib.h>
  25 #include <glib/gi18n.h>
  26 #include <stdio.h>
  27 #include <string.h>
  28 #include <stdlib.h>
  29 #include <time.h>
  30 #include <sys/stat.h>
  31
  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 *, size_t, void *);
  41 typedef int (*peekcharfunc) (void *);
  42 typedef int (*getcharfunc) (void *);
  43 typedef gint (*get_one_field_func) (gchar *, size_t, void *, HeaderEntry[]);
  44
  45 static gint string_get_one_field(gchar *buf, size_t len, char **str,
  46                                  HeaderEntry hentry[]);
  47
  48 static char *string_getline(char *buf, size_t 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, size_t 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, size_t 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, size_t 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, size_t len, char **str)
  78 {
  79         if (!*str || !**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, size_t 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_ascii_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, size_t 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 GPtrArray *procheader_get_header_array_asis(FILE *fp)
 169 {
 170         gchar buf[BUFFSIZE];
 171         GPtrArray *headers;
 172         Header *header;
 173
 174         g_return_val_if_fail(fp != NULL, NULL);
 175
 176         headers = g_ptr_array_new();
 177
 178         while (procheader_get_one_field_asis(buf, sizeof(buf), fp) != -1) {
 179                 if ((header = procheader_parse_header(buf)) != NULL)
 180                         g_ptr_array_add(headers, header);
 181                         /*
 182                 if (*buf == ':') continue;
 183                 for (p = buf; *p && *p != ' '; p++) {
 184                         if (*p == ':') {
 185                                 header = g_new(Header, 1);
 186                                 header->name = g_strndup(buf, p - buf);
 187                                 p++;
 188                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 189                                 header->body = g_strdup(tmp);
 190
 191                                 g_ptr_array_add(headers, header);
 192                                 break;
 193                         }
 194                 }
 195                         */
 196         }
 197
 198         return headers;
 199 }
 200
 201 void procheader_header_array_destroy(GPtrArray *harray)
 202 {
 203         gint i;
 204         Header *header;
 205
 206         for (i = 0; i < harray->len; i++) {
 207                 header = g_ptr_array_index(harray, i);
 208                 procheader_header_free(header);
 209         }
 210
 211         g_ptr_array_free(harray, TRUE);
 212 }
 213
 214 void procheader_header_free(Header *header)
 215 {
 216         if (!header) return;
 217
 218         g_free(header->name);
 219         g_free(header->body);
 220         g_free(header);
 221 }
 222
 223 /*
 224   tests whether two headers' names are equal
 225   remove the trailing ':' or ' ' before comparing
 226 */
 227
 228 gboolean procheader_headername_equal(char * hdr1, char * hdr2)
 229 {
 230         int len1;
 231         int len2;
 232
 233         len1 = strlen(hdr1);
 234         len2 = strlen(hdr2);
 235         if (hdr1[len1 - 1] == ':')
 236                 len1--;
 237         if (hdr2[len2 - 1] == ':')
 238                 len2--;
 239         if (len1 != len2)
 240                 return 0;
 241
 242         return (g_ascii_strncasecmp(hdr1, hdr2, len1) == 0);
 243 }
 244
 245 /*
 246   parse headers, for example :
 247   From: dinh@enseirb.fr becomes :
 248   header->name = "From:"
 249   header->body = "dinh@enseirb.fr"
 250  */
 251
 252 Header * procheader_parse_header(gchar * buf)
 253 {
 254         gchar *p = buf;
 255         Header * header;
 256
 257         if ((*buf == ':') || (*buf == ' '))
 258                 return NULL;
 259
 260         for (p = buf; *p ; p++) {
 261                 if ((*p == ':') || (*p == ' ')) {
 262                         header = g_new(Header, 1);
 263                         header->name = g_strndup(buf, p - buf + 1);
 264                         p++;
 265                         while (*p == ' ' || *p == '\t') p++;
 266                         header->body = conv_unmime_header(p, NULL);
 267                         return header;
 268                 }
 269         }
 270         return NULL;
 271 }
 272
 273 void procheader_get_header_fields(FILE *fp, HeaderEntry hentry[])
 274 {
 275         gchar buf[BUFFSIZE];
 276         HeaderEntry *hp;
 277         gint hnum;
 278         gchar *p;
 279
 280         if (hentry == NULL) return;
 281
 282         while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, hentry))
 283                != -1) {
 284                 hp = hentry + hnum;
 285
 286                 p = buf + strlen(hp->name);
 287                 while (*p == ' ' || *p == '\t') p++;
 288
 289                 if (hp->body == NULL)
 290                         hp->body = g_strdup(p);
 291                 else if (procheader_headername_equal(hp->name, "To") ||
 292                          procheader_headername_equal(hp->name, "Cc")) {
 293                         gchar *tp = hp->body;
 294                         hp->body = g_strconcat(tp, ", ", p, NULL);
 295                         g_free(tp);
 296                 }
 297         }
 298 }
 299
 300 MsgInfo *procheader_parse_file(const gchar *file, MsgFlags flags,
 301                                gboolean full, gboolean decrypted)
 302 {
 303         struct stat s;
 304         FILE *fp;
 305         MsgInfo *msginfo;
 306
 307         if (stat(file, &s) < 0) {
 308                 FILE_OP_ERROR(file, "stat");
 309                 return NULL;
 310         }
 311         if (!S_ISREG(s.st_mode))
 312                 return NULL;
 313
 314         if ((fp = g_fopen(file, "rb")) == NULL) {
 315                 FILE_OP_ERROR(file, "fopen");
 316                 return NULL;
 317         }
 318
 319         msginfo = procheader_parse_stream(fp, flags, full, decrypted);
 320         fclose(fp);
 321
 322         if (msginfo) {
 323                 msginfo->size = s.st_size;
 324                 msginfo->mtime = s.st_mtime;
 325         }
 326
 327         return msginfo;
 328 }
 329
 330 MsgInfo *procheader_parse_str(const gchar *str, MsgFlags flags, gboolean full,
 331                               gboolean decrypted)
 332 {
 333         return parse_stream(&str, TRUE, flags, full, decrypted);
 334 }
 335
 336 enum
 337 {
 338         H_DATE          = 0,
 339         H_FROM          = 1,
 340         H_TO            = 2,
 341         H_CC            = 3,
 342         H_NEWSGROUPS    = 4,
 343         H_SUBJECT       = 5,
 344         H_MSG_ID        = 6,
 345         H_REFERENCES    = 7,
 346         H_IN_REPLY_TO   = 8,
 347         H_CONTENT_TYPE  = 9,
 348         H_SEEN          = 10,
 349         H_STATUS        = 11,
 350         H_X_STATUS      = 12,
 351         H_FROM_SPACE    = 13,
 352         H_SC_PLANNED_DOWNLOAD = 14,
 353         H_SC_MESSAGE_SIZE = 15,
 354         H_FACE          = 16,
 355         H_X_FACE        = 17,
 356         H_DISPOSITION_NOTIFICATION_TO = 18,
 357         H_RETURN_RECEIPT_TO = 19,
 358         H_SC_PARTIALLY_RETRIEVED = 20,
 359         H_SC_ACCOUNT_SERVER = 21,
 360         H_SC_ACCOUNT_LOGIN = 22,
 361 };
 362
 363 static HeaderEntry hentry_full[] = {{"Date:",           NULL, FALSE},
 364                                    {"From:",            NULL, TRUE},
 365                                    {"To:",              NULL, TRUE},
 366                                    {"Cc:",              NULL, TRUE},
 367                                    {"Newsgroups:",      NULL, TRUE},
 368                                    {"Subject:",         NULL, TRUE},
 369                                    {"Message-ID:",      NULL, FALSE},
 370                                    {"References:",      NULL, FALSE},
 371                                    {"In-Reply-To:",     NULL, FALSE},
 372                                    {"Content-Type:",    NULL, FALSE},
 373                                    {"Seen:",            NULL, FALSE},
 374                                    {"Status:",          NULL, FALSE},
 375                                    {"X-Status:",        NULL, FALSE},
 376                                    {"From ",            NULL, FALSE},
 377                                    {"SC-Marked-For-Download:", NULL, FALSE},
 378                                    {"SC-Message-Size:", NULL, FALSE},
 379                                    {"Face:",            NULL, FALSE},
 380                                    {"X-Face:",          NULL, FALSE},
 381                                    {"Disposition-Notification-To:", NULL, FALSE},
 382                                    {"Return-Receipt-To:", NULL, FALSE},
 383                                    {"SC-Partially-Retrieved:", NULL, FALSE},
 384                                    {"SC-Account-Server:", NULL, FALSE},
 385                                    {"SC-Account-Login:",NULL, FALSE},
 386                                    {NULL,               NULL, FALSE}};
 387
 388 static HeaderEntry hentry_short[] = {{"Date:",          NULL, FALSE},
 389                                     {"From:",           NULL, TRUE},
 390                                     {"To:",             NULL, TRUE},
 391                                     {"Cc:",             NULL, TRUE},
 392                                     {"Newsgroups:",     NULL, TRUE},
 393                                     {"Subject:",        NULL, TRUE},
 394                                     {"Message-ID:",     NULL, FALSE},
 395                                     {"References:",     NULL, FALSE},
 396                                     {"In-Reply-To:",    NULL, FALSE},
 397                                     {"Content-Type:",   NULL, FALSE},
 398                                     {"Seen:",           NULL, FALSE},
 399                                     {"Status:",         NULL, FALSE},
 400                                     {"X-Status:",       NULL, FALSE},
 401                                     {"From ",           NULL, FALSE},
 402                                     {"SC-Marked-For-Download:", NULL, FALSE},
 403                                     {"SC-Message-Size:",NULL, FALSE},
 404                                     {NULL,              NULL, FALSE}};
 405
 406 HeaderEntry* procheader_get_headernames(gboolean full)
 407 {
 408         return full ? hentry_full : hentry_short;
 409 }
 410
 411 MsgInfo *procheader_parse_stream(FILE *fp, MsgFlags flags, gboolean full,
 412                                  gboolean decrypted)
 413 {
 414         return parse_stream(fp, FALSE, flags, full, decrypted);
 415 }
 416
 417 static MsgInfo *parse_stream(void *data, gboolean isstring, MsgFlags flags,
 418                              gboolean full, gboolean decrypted)
 419 {
 420         MsgInfo *msginfo;
 421         gchar buf[BUFFSIZE];
 422         gchar *p, *tmp;
 423         gchar *hp;
 424         HeaderEntry *hentry;
 425         gint hnum;
 426         get_one_field_func get_one_field =
 427                 isstring ? (get_one_field_func)string_get_one_field
 428                          : (get_one_field_func)procheader_get_one_field;
 429
 430         hentry = procheader_get_headernames(full);
 431
 432         if (MSG_IS_QUEUED(flags) || MSG_IS_DRAFT(flags)) {
 433                 while (get_one_field(buf, sizeof(buf), data, NULL) != -1)
 434                         ; /* loop */
 435         }
 436
 437         msginfo = procmsg_msginfo_new();
 438
 439         if (flags.tmp_flags || flags.perm_flags)
 440                 msginfo->flags = flags;
 441         else
 442                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_NEW | MSG_UNREAD);
 443
 444         msginfo->inreplyto = NULL;
 445
 446         while ((hnum = get_one_field(buf, sizeof(buf), data, hentry))
 447                != -1) {
 448                 hp = buf + strlen(hentry[hnum].name);
 449                 while (*hp == ' ' || *hp == '\t') hp++;
 450
 451                 switch (hnum) {
 452                 case H_DATE:
 453                         if (msginfo->date) break;
 454                         msginfo->date_t =
 455                                 procheader_date_parse(NULL, hp, 0);
 456                         msginfo->date = g_strdup(hp);
 457                         break;
 458                 case H_FROM:
 459                         if (msginfo->from) break;
 460                         msginfo->from = conv_unmime_header(hp, NULL);
 461                         msginfo->fromname = procheader_get_fromname(msginfo->from);
 462                         replace_returns(msginfo->from);
 463                         replace_returns(msginfo->fromname);
 464                         break;
 465                 case H_TO:
 466                         tmp = conv_unmime_header(hp, NULL);
 467                         if (msginfo->to) {
 468                                 p = msginfo->to;
 469                                 msginfo->to =
 470                                         g_strconcat(p, ", ", tmp, NULL);
 471                                 g_free(p);
 472                         } else
 473                                 msginfo->to = g_strdup(tmp);
 474                         g_free(tmp);
 475                         break;
 476                 case H_CC:
 477                         tmp = conv_unmime_header(hp, NULL);
 478                         if (msginfo->cc) {
 479                                 p = msginfo->cc;
 480                                 msginfo->cc =
 481                                         g_strconcat(p, ", ", tmp, NULL);
 482                                 g_free(p);
 483                         } else
 484                                 msginfo->cc = g_strdup(tmp);
 485                         g_free(tmp);
 486                         break;
 487                 case H_NEWSGROUPS:
 488                         if (msginfo->newsgroups) {
 489                                 p = msginfo->newsgroups;
 490                                 msginfo->newsgroups =
 491                                         g_strconcat(p, ",", hp, NULL);
 492                                 g_free(p);
 493                         } else
 494                                 msginfo->newsgroups = g_strdup(hp);
 495                         break;
 496                 case H_SUBJECT:
 497                         if (msginfo->subject) break;
 498                         msginfo->subject = conv_unmime_header(hp, NULL);
 499                         replace_returns(msginfo->subject);
 500                         break;
 501                 case H_MSG_ID:
 502                         if (msginfo->msgid) break;
 503
 504                         extract_parenthesis(hp, '<', '>');
 505                         remove_space(hp);
 506                         msginfo->msgid = g_strdup(hp);
 507                         break;
 508                 case H_REFERENCES:
 509                         msginfo->references =
 510                                 references_list_prepend(msginfo->references,
 511                                                         hp);
 512                         break;
 513                 case H_IN_REPLY_TO:
 514                         if (msginfo->inreplyto) break;
 515
 516                         eliminate_parenthesis(hp, '(', ')');
 517                         if ((p = strrchr(hp, '<')) != NULL &&
 518                             strchr(p + 1, '>') != NULL) {
 519                                 extract_parenthesis(p, '<', '>');
 520                                 remove_space(p);
 521                                 if (*p != '\0')
 522                                         msginfo->inreplyto = g_strdup(p);
 523                         }
 524                         break;
 525                 case H_CONTENT_TYPE:
 526                         if (!g_ascii_strncasecmp(hp, "multipart/", 10))
 527                                 MSG_SET_TMP_FLAGS(msginfo->flags, MSG_MULTIPART);
 528                         break;
 529 #ifdef ALLOW_HEADER_HINT
 530                 case H_SEEN:
 531                         /* mnews Seen header */
 532                         MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW|MSG_UNREAD);
 533                         break;
 534 #endif
 535                 case H_FACE:
 536                         if (msginfo->face) break;
 537                         msginfo->face = g_strdup(hp);
 538                         break;
 539                 case H_X_FACE:
 540                         if (msginfo->xface) break;
 541                         msginfo->xface = g_strdup(hp);
 542                         break;
 543                 case H_DISPOSITION_NOTIFICATION_TO:
 544                         if (msginfo->dispositionnotificationto) break;
 545                         msginfo->dispositionnotificationto = g_strdup(hp);
 546                         break;
 547                 case H_RETURN_RECEIPT_TO:
 548                         if (msginfo->returnreceiptto) break;
 549                         msginfo->returnreceiptto = g_strdup(hp);
 550                         break;
 551                 case H_SC_PARTIALLY_RETRIEVED:
 552                         if (msginfo->partial_recv) break;
 553                         msginfo->partial_recv = g_strdup(hp);
 554                         break;
 555                 case H_SC_ACCOUNT_SERVER:
 556                         if (msginfo->account_server) break;
 557                         msginfo->account_server = g_strdup(hp);
 558                         break;
 559                 case H_SC_ACCOUNT_LOGIN:
 560                         if (msginfo->account_login) break;
 561                         msginfo->account_login = g_strdup(hp);
 562                         break;
 563                 case H_SC_MESSAGE_SIZE:
 564                         if (msginfo->total_size) break;
 565                         msginfo->total_size = atoi(hp);
 566                         break;
 567                 case H_SC_PLANNED_DOWNLOAD:
 568                         msginfo->planned_download = atoi(hp);
 569                         break;
 570 #ifdef ALLOW_HEADER_HINT
 571                 case H_STATUS:
 572                         if (strchr(hp, 'R') != NULL)
 573                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 574                         if (strchr(hp, 'O') != NULL)
 575                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW);
 576                         if (strchr(hp, 'U') != NULL)
 577                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 578                         break;
 579                 case H_X_STATUS:
 580                         if (strchr(hp, 'D') != NULL)
 581                                 MSG_SET_PERM_FLAGS(msginfo->flags,
 582                                               MSG_REALLY_DELETED);
 583                         if (strchr(hp, 'F') != NULL)
 584                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_MARKED);
 585                         if (strchr(hp, 'd') != NULL)
 586                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_DELETED);
 587                         if (strchr(hp, 'r') != NULL)
 588                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_REPLIED);
 589                         if (strchr(hp, 'f') != NULL)
 590                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_FORWARDED);
 591                         break;
 592 #endif
 593                 case H_FROM_SPACE:
 594                         if (msginfo->fromspace) break;
 595                         msginfo->fromspace = g_strdup(hp);
 596                         break;
 597                 default:
 598                         break;
 599                 }
 600         }
 601
 602         if (!msginfo->inreplyto && msginfo->references)
 603                 msginfo->inreplyto =
 604                         g_strdup((gchar *)msginfo->references->data);
 605
 606         return msginfo;
 607 }
 608
 609 gchar *procheader_get_fromname(const gchar *str)
 610 {
 611         gchar *tmp, *name;
 612
 613         Xstrdup_a(tmp, str, return NULL);
 614
 615         if (*tmp == '\"') {
 616                 extract_quote(tmp, '\"');
 617                 g_strstrip(tmp);
 618         } else if (strchr(tmp, '<')) {
 619                 eliminate_parenthesis(tmp, '<', '>');
 620                 g_strstrip(tmp);
 621                 if (*tmp == '\0') {
 622                         strcpy(tmp, str);
 623                         extract_parenthesis(tmp, '<', '>');
 624                         g_strstrip(tmp);
 625                 }
 626         } else if (strchr(tmp, '(')) {
 627                 extract_parenthesis(tmp, '(', ')');
 628                 g_strstrip(tmp);
 629         }
 630
 631         if (*tmp == '\0')
 632                 name = g_strdup(str);
 633         else
 634                 name = g_strdup(tmp);
 635
 636         return name;
 637 }
 638
 639 static gint procheader_scan_date_string(const gchar *str,
 640                                         gchar *weekday, gint *day,
 641                                         gchar *month, gint *year,
 642                                         gint *hh, gint *mm, gint *ss,
 643                                         gchar *zone)
 644 {
 645         gint result;
 646
 647         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d %5s",
 648                         weekday, day, month, year, hh, mm, ss, zone);
 649         if (result == 8) return 0;
 650
 651         result = sscanf(str, "%3s,%d %9s %d %2d:%2d:%2d %5s",
 652                         weekday, day, month, year, hh, mm, ss, zone);
 653         if (result == 8) return 0;
 654
 655         result = sscanf(str, "%d %9s %d %2d:%2d:%2d %5s",
 656                         day, month, year, hh, mm, ss, zone);
 657         if (result == 7) return 0;
 658
 659         *zone = '\0';
 660         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d",
 661                         weekday, day, month, year, hh, mm, ss);
 662         if (result == 7) return 0;
 663
 664         result = sscanf(str, "%d %9s %d %2d:%2d:%2d",
 665                         day, month, year, hh, mm, ss);
 666         if (result == 6) return 0;
 667
 668         *ss = 0;
 669         result = sscanf(str, "%10s %d %9s %d %2d:%2d %5s",
 670                         weekday, day, month, year, hh, mm, zone);
 671         if (result == 7) return 0;
 672
 673         result = sscanf(str, "%d %9s %d %2d:%2d %5s",
 674                         day, month, year, hh, mm, zone);
 675         if (result == 6) return 0;
 676
 677         *zone = '\0';
 678         result = sscanf(str, "%10s %d %9s %d %2d:%2d",
 679                         weekday, day, month, year, hh, mm);
 680         if (result == 6) return 0;
 681
 682         result = sscanf(str, "%d %9s %d %2d:%2d",
 683                         day, month, year, hh, mm);
 684         if (result == 5) return 0;
 685
 686         return -1;
 687 }
 688
 689 /*
 690  * Hiro, most UNIXen support this function:
 691  * http://www.mcsr.olemiss.edu/cgi-bin/man-cgi?getdate
 692  */
 693 gboolean procheader_date_parse_to_tm(const gchar *src, struct tm *t, char *zone)
 694 {
 695         static gchar monthstr[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
 696         gchar weekday[11];
 697         gint day;
 698         gchar month[10];
 699         gint year;
 700         gint hh, mm, ss;
 701         GDateMonth dmonth;
 702         gchar *p;
 703
 704         if (!t)
 705                 return FALSE;
 706
 707         memset(t, 0, sizeof *t);
 708
 709         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 710                                         &hh, &mm, &ss, zone) < 0) {
 711                 g_warning("Invalid date: %s\n", src);
 712                 return FALSE;
 713         }
 714
 715         /* Y2K compliant :) */
 716         if (year < 100) {
 717                 if (year < 70)
 718                         year += 2000;
 719                 else
 720                         year += 1900;
 721         }
 722
 723         month[3] = '\0';
 724         if ((p = strstr(monthstr, month)) != NULL)
 725                 dmonth = (gint)(p - monthstr) / 3 + 1;
 726         else {
 727                 g_warning("Invalid month: %s\n", month);
 728                 dmonth = G_DATE_BAD_MONTH;
 729         }
 730
 731         t->tm_sec = ss;
 732         t->tm_min = mm;
 733         t->tm_hour = hh;
 734         t->tm_mday = day;
 735         t->tm_mon = dmonth - 1;
 736         t->tm_year = year - 1900;
 737         t->tm_wday = 0;
 738         t->tm_yday = 0;
 739         t->tm_isdst = -1;
 740
 741         mktime(t);
 742
 743         return TRUE;
 744 }
 745
 746 time_t procheader_date_parse(gchar *dest, const gchar *src, gint len)
 747 {
 748         static gchar monthstr[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
 749         gchar weekday[11];
 750         gint day;
 751         gchar month[10];
 752         gint year;
 753         gint hh, mm, ss;
 754         gchar zone[6];
 755         GDateMonth dmonth = G_DATE_BAD_MONTH;
 756         struct tm t;
 757         gchar *p;
 758         time_t timer;
 759         time_t tz_offset;
 760
 761         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 762                                         &hh, &mm, &ss, zone) < 0) {
 763                 if (dest && len > 0)
 764                         strncpy2(dest, src, len);
 765                 return 0;
 766         }
 767
 768         /* Y2K compliant :) */
 769         if (year < 1000) {
 770                 if (year < 50)
 771                         year += 2000;
 772                 else
 773                         year += 1900;
 774         }
 775
 776         month[3] = '\0';
 777         for (p = monthstr; *p != '\0'; p += 3) {
 778                 if (!g_ascii_strncasecmp(p, month, 3)) {
 779                         dmonth = (gint)(p - monthstr) / 3 + 1;
 780                         break;
 781                 }
 782         }
 783
 784         t.tm_sec = ss;
 785         t.tm_min = mm;
 786         t.tm_hour = hh;
 787         t.tm_mday = day;
 788         t.tm_mon = dmonth - 1;
 789         t.tm_year = year - 1900;
 790         t.tm_wday = 0;
 791         t.tm_yday = 0;
 792         t.tm_isdst = -1;
 793
 794         timer = mktime(&t);
 795         tz_offset = remote_tzoffset_sec(zone);
 796         if (tz_offset != -1)
 797                 timer += tzoffset_sec(&timer) - tz_offset;
 798
 799         if (dest)
 800                 procheader_date_get_localtime(dest, len, timer);
 801
 802         return timer;
 803 }
 804
 805 void procheader_date_get_localtime(gchar *dest, gint len, const time_t timer)
 806 {
 807         struct tm *lt;
 808         gchar *default_format = "%y/%m/%d(%a) %H:%M";
 809         gchar *str;
 810         const gchar *src_codeset, *dest_codeset;
 811
 812         lt = localtime(&timer);
 813
 814         if (prefs_common.date_format)
 815                 strftime(dest, len, prefs_common.date_format, lt);
 816         else
 817                 strftime(dest, len, default_format, lt);
 818
 819         src_codeset = conv_get_locale_charset_str();
 820         dest_codeset = CS_UTF_8;
 821         str = conv_codeset_strdup(dest, src_codeset, dest_codeset);
 822         if (str) {
 823                 g_snprintf(dest, len, "%s", str);
 824                 strncpy2(dest, str, len);
 825                 g_free(str);
 826         }
 827 }
 828
 829 /* Added by Mel Hadasht on 27 Aug 2001 */
 830 /* Get a header from msginfo */
 831 gint procheader_get_header_from_msginfo(MsgInfo *msginfo, gchar *buf, gint len, gchar *header)
 832 {
 833         gchar *file;
 834         FILE *fp;
 835         HeaderEntry hentry[]={ { NULL, NULL, TRUE  },
 836                                { NULL, NULL, FALSE } };
 837         gint val;
 838
 839         hentry[0].name = header;
 840
 841         g_return_val_if_fail(msginfo != NULL, -1);
 842         file = procmsg_get_message_file_path(msginfo);
 843         if ((fp = g_fopen(file, "rb")) == NULL) {
 844                FILE_OP_ERROR(file, "fopen");
 845                g_free(file);
 846                return -1;
 847         }
 848         val = procheader_get_one_field(buf,len, fp, hentry);
 849         if (fclose(fp) == EOF) {
 850                 FILE_OP_ERROR(file, "fclose");
 851                 g_unlink(file);
 852                 g_free(file);
 853                 return -1;
 854         }
 855
 856         g_free(file);
 857         if (val == -1)
 858                 return -1;
 859
 860         return 0;
 861 }