src/procheader.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2009 Hiroyuki Yamamoto and the Claws Mail 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 3 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, see <http://www.gnu.org/licenses/>.
  17  *
  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 #ifdef G_OS_WIN32
  33 #  include <w32lib.h>
  34 #endif
  35
  36 #include "procheader.h"
  37 #include "procmsg.h"
  38 #include "codeconv.h"
  39 #include "prefs_common.h"
  40 #include "utils.h"
  41
  42 #define BUFFSIZE        8192
  43
  44 static gchar monthstr[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
  45
  46 typedef char *(*getlinefunc) (char *, size_t, void *);
  47 typedef int (*peekcharfunc) (void *);
  48 typedef int (*getcharfunc) (void *);
  49 typedef gint (*get_one_field_func) (gchar *, size_t, void *, HeaderEntry[]);
  50
  51 static gint string_get_one_field(gchar *buf, size_t len, char **str,
  52                                  HeaderEntry hentry[]);
  53
  54 static char *string_getline(char *buf, size_t len, char **str);
  55 static int string_peekchar(char **str);
  56 static int file_peekchar(FILE *fp);
  57 static gint generic_get_one_field(gchar *buf, size_t len, void *data,
  58                                   HeaderEntry hentry[],
  59                                   getlinefunc getline,
  60                                   peekcharfunc peekchar,
  61                                   gboolean unfold);
  62 static MsgInfo *parse_stream(void *data, gboolean isstring, MsgFlags flags,
  63                              gboolean full, gboolean decrypted);
  64
  65
  66 gint procheader_get_one_field(gchar *buf, size_t len, FILE *fp,
  67                               HeaderEntry hentry[])
  68 {
  69         return generic_get_one_field(buf, len, fp, hentry,
  70                                      (getlinefunc)fgets_crlf, (peekcharfunc)file_peekchar,
  71                                      TRUE);
  72 }
  73
  74 static gint string_get_one_field(gchar *buf, size_t len, char **str,
  75                                  HeaderEntry hentry[])
  76 {
  77         return generic_get_one_field(buf, len, str, hentry,
  78                                      (getlinefunc)string_getline,
  79                                      (peekcharfunc)string_peekchar,
  80                                      TRUE);
  81 }
  82
  83 static char *string_getline(char *buf, size_t len, char **str)
  84 {
  85         gboolean is_cr = FALSE;
  86         gboolean last_was_cr = FALSE;
  87
  88         if (!*str || !**str)
  89                 return NULL;
  90
  91         for (; **str && len > 1; --len) {
  92                 is_cr = (**str == '\r');
  93                 if ((*buf++ = *(*str)++) == '\n') {
  94                     break;
  95                 }
  96                 if (last_was_cr) {
  97                         *(--buf) = '\n';
  98                         buf++;
  99                     break;
 100                 }
 101                 last_was_cr = is_cr;
 102         }
 103
 104         *buf = '\0';
 105
 106         return buf;
 107 }
 108
 109 static int string_peekchar(char **str)
 110 {
 111         return **str;
 112 }
 113
 114 static int file_peekchar(FILE *fp)
 115 {
 116         return ungetc(getc(fp), fp);
 117 }
 118
 119 static gint generic_get_one_field(gchar *buf, size_t len, void *data,
 120                           HeaderEntry *hentry,
 121                           getlinefunc getline, peekcharfunc peekchar,
 122                           gboolean unfold)
 123 {
 124         gint nexthead;
 125         gint hnum = 0;
 126         HeaderEntry *hp = NULL;
 127
 128         if (hentry != NULL) {
 129                 /* skip non-required headers */
 130                 do {
 131                         do {
 132                                 if (getline(buf, len, data) == NULL)
 133                                         return -1;
 134                                 if (buf[0] == '\r' || buf[0] == '\n')
 135                                         return -1;
 136                         } while (buf[0] == ' ' || buf[0] == '\t');
 137
 138                         for (hp = hentry, hnum = 0; hp->name != NULL;
 139                              hp++, hnum++) {
 140                                 if (!g_ascii_strncasecmp(hp->name, buf,
 141                                                  strlen(hp->name)))
 142                                         break;
 143                         }
 144                 } while (hp->name == NULL);
 145         } else {
 146                 if (getline(buf, len, data) == NULL) return -1;
 147                 if (buf[0] == '\r' || buf[0] == '\n') return -1;
 148         }
 149
 150         /* unfold line */
 151         while (1) {
 152                 nexthead = peekchar(data);
 153                 /* ([*WSP CRLF] 1*WSP) */
 154                 if (nexthead == ' ' || nexthead == '\t') {
 155                         size_t buflen;
 156                         gboolean skiptab = (nexthead == '\t');
 157                         /* trim previous trailing \n if requesting one header or
 158                          * unfolding was requested */
 159                         if ((!hentry && unfold) || (hp && hp->unfold))
 160                                 strretchomp(buf);
 161
 162                         buflen = strlen(buf);
 163
 164                         /* concatenate next line */
 165                         if ((len - buflen) > 2) {
 166                                 if (getline(buf + buflen, len - buflen, data) == NULL)
 167                                         break;
 168                                 if (skiptab) { /* replace tab with space */
 169                                         *(buf + buflen) = ' ';
 170                                 }
 171                         } else
 172                                 break;
 173                 } else {
 174                         /* remove trailing new line */
 175                         strretchomp(buf);
 176                         break;
 177                 }
 178         }
 179
 180         return hnum;
 181 }
 182
 183 gint procheader_get_one_field_asis(gchar *buf, size_t len, FILE *fp)
 184 {
 185         return generic_get_one_field(buf, len, fp, NULL,
 186                                      (getlinefunc)fgets_crlf,
 187                                      (peekcharfunc)file_peekchar,
 188                                      FALSE);
 189 }
 190
 191 GPtrArray *procheader_get_header_array_asis(FILE *fp)
 192 {
 193         gchar buf[BUFFSIZE];
 194         GPtrArray *headers;
 195         Header *header;
 196
 197         cm_return_val_if_fail(fp != NULL, NULL);
 198
 199         headers = g_ptr_array_new();
 200
 201         while (procheader_get_one_field_asis(buf, sizeof(buf), fp) != -1) {
 202                 if ((header = procheader_parse_header(buf)) != NULL)
 203                         g_ptr_array_add(headers, header);
 204         }
 205
 206         return headers;
 207 }
 208
 209 void procheader_header_array_destroy(GPtrArray *harray)
 210 {
 211         gint i;
 212         Header *header;
 213
 214         for (i = 0; i < harray->len; i++) {
 215                 header = g_ptr_array_index(harray, i);
 216                 procheader_header_free(header);
 217         }
 218
 219         g_ptr_array_free(harray, TRUE);
 220 }
 221
 222 void procheader_header_free(Header *header)
 223 {
 224         if (!header) return;
 225
 226         g_free(header->name);
 227         g_free(header->body);
 228         g_free(header);
 229 }
 230
 231 /*
 232   tests whether two headers' names are equal
 233   remove the trailing ':' or ' ' before comparing
 234 */
 235
 236 gboolean procheader_headername_equal(char * hdr1, char * hdr2)
 237 {
 238         int len1;
 239         int len2;
 240
 241         len1 = strlen(hdr1);
 242         len2 = strlen(hdr2);
 243         if (hdr1[len1 - 1] == ':')
 244                 len1--;
 245         if (hdr2[len2 - 1] == ':')
 246                 len2--;
 247         if (len1 != len2)
 248                 return 0;
 249
 250         return (g_ascii_strncasecmp(hdr1, hdr2, len1) == 0);
 251 }
 252
 253 /*
 254   parse headers, for example :
 255   From: dinh@enseirb.fr becomes :
 256   header->name = "From:"
 257   header->body = "dinh@enseirb.fr"
 258  */
 259
 260 Header * procheader_parse_header(gchar * buf)
 261 {
 262         gchar *p = buf;
 263         Header * header;
 264
 265         if ((*buf == ':') || (*buf == ' '))
 266                 return NULL;
 267
 268         for (p = buf; *p ; p++) {
 269                 if ((*p == ':') || (*p == ' ')) {
 270                         header = g_new(Header, 1);
 271                         header->name = g_strndup(buf, p - buf + 1);
 272                         p++;
 273                         while (*p == ' ' || *p == '\t') p++;
 274                         header->body = conv_unmime_header(p, NULL);
 275                         return header;
 276                 }
 277         }
 278         return NULL;
 279 }
 280
 281 void procheader_get_header_fields(FILE *fp, HeaderEntry hentry[])
 282 {
 283         gchar buf[BUFFSIZE];
 284         HeaderEntry *hp;
 285         gint hnum;
 286         gchar *p;
 287
 288         if (hentry == NULL) return;
 289
 290         while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, hentry))
 291                != -1) {
 292                 hp = hentry + hnum;
 293
 294                 p = buf + strlen(hp->name);
 295                 while (*p == ' ' || *p == '\t') p++;
 296
 297                 if (hp->body == NULL)
 298                         hp->body = g_strdup(p);
 299                 else if (procheader_headername_equal(hp->name, "To") ||
 300                          procheader_headername_equal(hp->name, "Cc")) {
 301                         gchar *tp = hp->body;
 302                         hp->body = g_strconcat(tp, ", ", p, NULL);
 303                         g_free(tp);
 304                 }
 305         }
 306 }
 307
 308 MsgInfo *procheader_parse_file(const gchar *file, MsgFlags flags,
 309                                gboolean full, gboolean decrypted)
 310 {
 311         struct stat s;
 312         FILE *fp;
 313         MsgInfo *msginfo;
 314
 315         if (g_stat(file, &s) < 0) {
 316                 FILE_OP_ERROR(file, "stat");
 317                 return NULL;
 318         }
 319         if (!S_ISREG(s.st_mode))
 320                 return NULL;
 321
 322         if ((fp = g_fopen(file, "rb")) == NULL) {
 323                 FILE_OP_ERROR(file, "fopen");
 324                 return NULL;
 325         }
 326
 327         msginfo = procheader_parse_stream(fp, flags, full, decrypted);
 328         fclose(fp);
 329
 330         if (msginfo) {
 331                 msginfo->size = s.st_size;
 332                 msginfo->mtime = s.st_mtime;
 333         }
 334
 335         return msginfo;
 336 }
 337
 338 MsgInfo *procheader_parse_str(const gchar *str, MsgFlags flags, gboolean full,
 339                               gboolean decrypted)
 340 {
 341         return parse_stream(&str, TRUE, flags, full, decrypted);
 342 }
 343
 344 enum
 345 {
 346         H_DATE          = 0,
 347         H_FROM          = 1,
 348         H_TO            = 2,
 349         H_CC            = 3,
 350         H_NEWSGROUPS    = 4,
 351         H_SUBJECT       = 5,
 352         H_MSG_ID        = 6,
 353         H_REFERENCES    = 7,
 354         H_IN_REPLY_TO   = 8,
 355         H_CONTENT_TYPE  = 9,
 356         H_SEEN          = 10,
 357         H_STATUS        = 11,
 358         H_X_STATUS      = 12,
 359         H_FROM_SPACE    = 13,
 360         H_SC_PLANNED_DOWNLOAD = 14,
 361         H_SC_MESSAGE_SIZE = 15,
 362         H_FACE          = 16,
 363         H_X_FACE        = 17,
 364         H_DISPOSITION_NOTIFICATION_TO = 18,
 365         H_RETURN_RECEIPT_TO = 19,
 366         H_SC_PARTIALLY_RETRIEVED = 20,
 367         H_SC_ACCOUNT_SERVER = 21,
 368         H_SC_ACCOUNT_LOGIN = 22,
 369         H_LIST_POST        = 23,
 370         H_LIST_SUBSCRIBE   = 24,
 371         H_LIST_UNSUBSCRIBE = 25,
 372         H_LIST_HELP        = 26,
 373         H_LIST_ARCHIVE     = 27,
 374         H_LIST_OWNER       = 28,
 375 };
 376
 377 static HeaderEntry hentry_full[] = {{"Date:",           NULL, FALSE},
 378                                    {"From:",            NULL, TRUE},
 379                                    {"To:",              NULL, TRUE},
 380                                    {"Cc:",              NULL, TRUE},
 381                                    {"Newsgroups:",      NULL, TRUE},
 382                                    {"Subject:",         NULL, TRUE},
 383                                    {"Message-ID:",      NULL, FALSE},
 384                                    {"References:",      NULL, FALSE},
 385                                    {"In-Reply-To:",     NULL, FALSE},
 386                                    {"Content-Type:",    NULL, FALSE},
 387                                    {"Seen:",            NULL, FALSE},
 388                                    {"Status:",          NULL, FALSE},
 389                                    {"X-Status:",        NULL, FALSE},
 390                                    {"From ",            NULL, FALSE},
 391                                    {"SC-Marked-For-Download:", NULL, FALSE},
 392                                    {"SC-Message-Size:", NULL, FALSE},
 393                                    {"Face:",            NULL, FALSE},
 394                                    {"X-Face:",          NULL, FALSE},
 395                                    {"Disposition-Notification-To:", NULL, FALSE},
 396                                    {"Return-Receipt-To:", NULL, FALSE},
 397                                    {"SC-Partially-Retrieved:", NULL, FALSE},
 398                                    {"SC-Account-Server:", NULL, FALSE},
 399                                    {"SC-Account-Login:",NULL, FALSE},
 400                                    {"List-Post:",       NULL, TRUE},
 401                                    {"List-Subscribe:",  NULL, TRUE},
 402                                    {"List-Unsubscribe:",NULL, TRUE},
 403                                    {"List-Help:",       NULL, TRUE},
 404                                    {"List-Archive:",    NULL, TRUE},
 405                                    {"List-Owner:",      NULL, TRUE},
 406                                    {NULL,               NULL, FALSE}};
 407
 408 static HeaderEntry hentry_short[] = {{"Date:",          NULL, FALSE},
 409                                     {"From:",           NULL, TRUE},
 410                                     {"To:",             NULL, TRUE},
 411                                     {"Cc:",             NULL, TRUE},
 412                                     {"Newsgroups:",     NULL, TRUE},
 413                                     {"Subject:",        NULL, TRUE},
 414                                     {"Message-ID:",     NULL, FALSE},
 415                                     {"References:",     NULL, FALSE},
 416                                     {"In-Reply-To:",    NULL, FALSE},
 417                                     {"Content-Type:",   NULL, FALSE},
 418                                     {"Seen:",           NULL, FALSE},
 419                                     {"Status:",         NULL, FALSE},
 420                                     {"X-Status:",       NULL, FALSE},
 421                                     {"From ",           NULL, FALSE},
 422                                     {"SC-Marked-For-Download:", NULL, FALSE},
 423                                     {"SC-Message-Size:",NULL, FALSE},
 424                                     {NULL,              NULL, FALSE}};
 425
 426 static HeaderEntry* procheader_get_headernames(gboolean full)
 427 {
 428         return full ? hentry_full : hentry_short;
 429 }
 430
 431 MsgInfo *procheader_parse_stream(FILE *fp, MsgFlags flags, gboolean full,
 432                                  gboolean decrypted)
 433 {
 434         return parse_stream(fp, FALSE, flags, full, decrypted);
 435 }
 436
 437 static MsgInfo *parse_stream(void *data, gboolean isstring, MsgFlags flags,
 438                              gboolean full, gboolean decrypted)
 439 {
 440         MsgInfo *msginfo;
 441         gchar buf[BUFFSIZE];
 442         gchar *p, *tmp;
 443         gchar *hp;
 444         HeaderEntry *hentry;
 445         gint hnum;
 446         void *orig_data = data;
 447
 448         get_one_field_func get_one_field =
 449                 isstring ? (get_one_field_func)string_get_one_field
 450                          : (get_one_field_func)procheader_get_one_field;
 451
 452         hentry = procheader_get_headernames(full);
 453
 454         if (MSG_IS_QUEUED(flags) || MSG_IS_DRAFT(flags)) {
 455                 while (get_one_field(buf, sizeof(buf), data, NULL) != -1) {
 456                         if ((!strncmp(buf, "X-Claws-End-Special-Headers: 1",
 457                                 strlen("X-Claws-End-Special-Headers:"))) ||
 458                             (!strncmp(buf, "X-Sylpheed-End-Special-Headers: 1",
 459                                 strlen("X-Sylpheed-End-Special-Headers:"))))
 460                                 break;
 461                         /* from other mailers */
 462                         if (!strncmp(buf, "Date: ", 6)
 463                         ||  !strncmp(buf, "To: ", 4)
 464                         ||  !strncmp(buf, "From: ", 6)
 465                         ||  !strncmp(buf, "Subject: ", 9)) {
 466                                 if (isstring)
 467                                         data = orig_data;
 468                                 else
 469                                         rewind((FILE *)data);
 470                                 break;
 471                         }
 472                 }
 473         }
 474
 475         msginfo = procmsg_msginfo_new();
 476
 477         if (flags.tmp_flags || flags.perm_flags)
 478                 msginfo->flags = flags;
 479         else
 480                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_NEW | MSG_UNREAD);
 481
 482         msginfo->inreplyto = NULL;
 483
 484         while ((hnum = get_one_field(buf, sizeof(buf), data, hentry))
 485                != -1) {
 486                 hp = buf + strlen(hentry[hnum].name);
 487                 while (*hp == ' ' || *hp == '\t') hp++;
 488
 489                 switch (hnum) {
 490                 case H_DATE:
 491                         if (msginfo->date) break;
 492                         msginfo->date_t =
 493                                 procheader_date_parse(NULL, hp, 0);
 494                         if (g_utf8_validate(hp, -1, NULL)) {
 495                                 msginfo->date = g_strdup(hp);
 496                         } else {
 497                                 gchar *utf = conv_codeset_strdup(
 498                                         hp,
 499                                         conv_get_locale_charset_str_no_utf8(),
 500                                         CS_INTERNAL);
 501                                 if (utf == NULL ||
 502                                     !g_utf8_validate(utf, -1, NULL)) {
 503                                         g_free(utf);
 504                                         utf = g_malloc(strlen(buf)*2+1);
 505                                         conv_localetodisp(utf,
 506                                                 strlen(hp)*2+1, hp);
 507                                 }
 508                                 msginfo->date = utf;
 509                         }
 510                         break;
 511                 case H_FROM:
 512                         if (msginfo->from) break;
 513                         msginfo->from = conv_unmime_header(hp, NULL);
 514                         msginfo->fromname = procheader_get_fromname(msginfo->from);
 515                         remove_return(msginfo->from);
 516                         remove_return(msginfo->fromname);
 517                         break;
 518                 case H_TO:
 519                         tmp = conv_unmime_header(hp, NULL);
 520                         remove_return(tmp);
 521                         if (msginfo->to) {
 522                                 p = msginfo->to;
 523                                 msginfo->to =
 524                                         g_strconcat(p, ", ", tmp, NULL);
 525                                 g_free(p);
 526                         } else
 527                                 msginfo->to = g_strdup(tmp);
 528                         g_free(tmp);
 529                         break;
 530                 case H_CC:
 531                         tmp = conv_unmime_header(hp, NULL);
 532                         remove_return(tmp);
 533                         if (msginfo->cc) {
 534                                 p = msginfo->cc;
 535                                 msginfo->cc =
 536                                         g_strconcat(p, ", ", tmp, NULL);
 537                                 g_free(p);
 538                         } else
 539                                 msginfo->cc = g_strdup(tmp);
 540                         g_free(tmp);
 541                         break;
 542                 case H_NEWSGROUPS:
 543                         if (msginfo->newsgroups) {
 544                                 p = msginfo->newsgroups;
 545                                 msginfo->newsgroups =
 546                                         g_strconcat(p, ",", hp, NULL);
 547                                 g_free(p);
 548                         } else
 549                                 msginfo->newsgroups = g_strdup(hp);
 550                         break;
 551                 case H_SUBJECT:
 552                         if (msginfo->subject) break;
 553                         msginfo->subject = conv_unmime_header(hp, NULL);
 554                         unfold_line(msginfo->subject);
 555                        break;
 556                 case H_MSG_ID:
 557                         if (msginfo->msgid) break;
 558
 559                         extract_parenthesis(hp, '<', '>');
 560                         remove_space(hp);
 561                         msginfo->msgid = g_strdup(hp);
 562                         break;
 563                 case H_REFERENCES:
 564                         msginfo->references =
 565                                 references_list_prepend(msginfo->references,
 566                                                         hp);
 567                         break;
 568                 case H_IN_REPLY_TO:
 569                         if (msginfo->inreplyto) break;
 570
 571                         eliminate_parenthesis(hp, '(', ')');
 572                         if ((p = strrchr(hp, '<')) != NULL &&
 573                             strchr(p + 1, '>') != NULL) {
 574                                 extract_parenthesis(p, '<', '>');
 575                                 remove_space(p);
 576                                 if (*p != '\0')
 577                                         msginfo->inreplyto = g_strdup(p);
 578                         }
 579                         break;
 580                 case H_CONTENT_TYPE:
 581                         if (!g_ascii_strncasecmp(hp, "multipart/", 10))
 582                                 MSG_SET_TMP_FLAGS(msginfo->flags, MSG_MULTIPART);
 583                         break;
 584 #ifdef ALLOW_HEADER_HINT
 585                 case H_SEEN:
 586                         /* mnews Seen header */
 587                         MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW|MSG_UNREAD);
 588                         break;
 589 #endif
 590                 case H_FACE:
 591                         if (!msginfo->extradata)
 592                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 593                         if (msginfo->extradata->face) break;
 594                         msginfo->extradata->face = g_strdup(hp);
 595                         break;
 596                 case H_X_FACE:
 597                         if (!msginfo->extradata)
 598                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 599                         if (msginfo->extradata->xface) break;
 600                         msginfo->extradata->xface = g_strdup(hp);
 601                         break;
 602                 case H_DISPOSITION_NOTIFICATION_TO:
 603                         if (!msginfo->extradata)
 604                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 605                         if (msginfo->extradata->dispositionnotificationto) break;
 606                         msginfo->extradata->dispositionnotificationto = g_strdup(hp);
 607                         break;
 608                 case H_RETURN_RECEIPT_TO:
 609                         if (!msginfo->extradata)
 610                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 611                         if (msginfo->extradata->returnreceiptto) break;
 612                         msginfo->extradata->returnreceiptto = g_strdup(hp);
 613                         break;
 614 /* partial download infos */
 615                 case H_SC_PARTIALLY_RETRIEVED:
 616                         if (!msginfo->extradata)
 617                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 618                         if (msginfo->extradata->partial_recv) break;
 619                         msginfo->extradata->partial_recv = g_strdup(hp);
 620                         break;
 621                 case H_SC_ACCOUNT_SERVER:
 622                         if (!msginfo->extradata)
 623                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 624                         if (msginfo->extradata->account_server) break;
 625                         msginfo->extradata->account_server = g_strdup(hp);
 626                         break;
 627                 case H_SC_ACCOUNT_LOGIN:
 628                         if (!msginfo->extradata)
 629                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 630                         if (msginfo->extradata->account_login) break;
 631                         msginfo->extradata->account_login = g_strdup(hp);
 632                         break;
 633                 case H_SC_MESSAGE_SIZE:
 634                         if (msginfo->total_size) break;
 635                         msginfo->total_size = atoi(hp);
 636                         break;
 637                 case H_SC_PLANNED_DOWNLOAD:
 638                         msginfo->planned_download = atoi(hp);
 639                         break;
 640 /* end partial download infos */
 641 #ifdef ALLOW_HEADER_HINT
 642                 case H_STATUS:
 643                         if (strchr(hp, 'R') != NULL)
 644                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 645                         if (strchr(hp, 'O') != NULL)
 646                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW);
 647                         if (strchr(hp, 'U') != NULL)
 648                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 649                         break;
 650                 case H_X_STATUS:
 651                         if (strchr(hp, 'D') != NULL)
 652                                 MSG_SET_PERM_FLAGS(msginfo->flags,
 653                                               MSG_REALLY_DELETED);
 654                         if (strchr(hp, 'F') != NULL)
 655                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_MARKED);
 656                         if (strchr(hp, 'd') != NULL)
 657                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_DELETED);
 658                         if (strchr(hp, 'r') != NULL)
 659                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_REPLIED);
 660                         if (strchr(hp, 'f') != NULL)
 661                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_FORWARDED);
 662                         break;
 663 #endif
 664                 case H_FROM_SPACE:
 665                         if (msginfo->fromspace) break;
 666                         msginfo->fromspace = g_strdup(hp);
 667                         remove_return(msginfo->fromspace);
 668                         break;
 669 /* list infos */
 670                 case H_LIST_POST:
 671                         if (!msginfo->extradata)
 672                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 673                         if (msginfo->extradata->list_post) break;
 674                         msginfo->extradata->list_post = g_strdup(hp);
 675                         break;
 676                 case H_LIST_SUBSCRIBE:
 677                         if (!msginfo->extradata)
 678                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 679                         if (msginfo->extradata->list_subscribe) break;
 680                         msginfo->extradata->list_subscribe = g_strdup(hp);
 681                         break;
 682                 case H_LIST_UNSUBSCRIBE:
 683                         if (!msginfo->extradata)
 684                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 685                         if (msginfo->extradata->list_unsubscribe) break;
 686                         msginfo->extradata->list_unsubscribe = g_strdup(hp);
 687                         break;
 688                 case H_LIST_HELP:
 689                         if (!msginfo->extradata)
 690                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 691                         if (msginfo->extradata->list_help) break;
 692                         msginfo->extradata->list_help = g_strdup(hp);
 693                         break;
 694                 case H_LIST_ARCHIVE:
 695                         if (!msginfo->extradata)
 696                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 697                         if (msginfo->extradata->list_archive) break;
 698                         msginfo->extradata->list_archive = g_strdup(hp);
 699                         break;
 700                 case H_LIST_OWNER:
 701                         if (!msginfo->extradata)
 702                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 703                         if (msginfo->extradata->list_owner) break;
 704                         msginfo->extradata->list_owner = g_strdup(hp);
 705                         break;
 706 /* end list infos */
 707                 default:
 708                         break;
 709                 }
 710         }
 711
 712         if (!msginfo->inreplyto && msginfo->references)
 713                 msginfo->inreplyto =
 714                         g_strdup((gchar *)msginfo->references->data);
 715
 716         return msginfo;
 717 }
 718
 719 gchar *procheader_get_fromname(const gchar *str)
 720 {
 721         gchar *tmp, *name;
 722
 723         Xstrdup_a(tmp, str, return NULL);
 724
 725         if (*tmp == '\"') {
 726                 extract_quote(tmp, '\"');
 727                 g_strstrip(tmp);
 728         } else if (strchr(tmp, '<')) {
 729                 eliminate_parenthesis(tmp, '<', '>');
 730                 g_strstrip(tmp);
 731                 if (*tmp == '\0') {
 732                         strcpy(tmp, str);
 733                         extract_parenthesis(tmp, '<', '>');
 734                         g_strstrip(tmp);
 735                 }
 736         } else if (strchr(tmp, '(')) {
 737                 extract_parenthesis(tmp, '(', ')');
 738                 g_strstrip(tmp);
 739         }
 740
 741         if (*tmp == '\0')
 742                 name = g_strdup(str);
 743         else
 744                 name = g_strdup(tmp);
 745
 746         return name;
 747 }
 748
 749 static gint procheader_scan_date_string(const gchar *str,
 750                                         gchar *weekday, gint *day,
 751                                         gchar *month, gint *year,
 752                                         gint *hh, gint *mm, gint *ss,
 753                                         gchar *zone)
 754 {
 755         gint result;
 756         gint month_n;
 757         gchar zone1[3];
 758         gchar zone2[3];
 759
 760         if (str == NULL)
 761                 return -1;
 762
 763         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d %5s",
 764                         weekday, day, month, year, hh, mm, ss, zone);
 765         if (result == 8) return 0;
 766
 767         /* RFC2822 */
 768         result = sscanf(str, "%3s,%d %9s %d %2d:%2d:%2d %5s",
 769                         weekday, day, month, year, hh, mm, ss, zone);
 770         if (result == 8) return 0;
 771
 772         result = sscanf(str, "%d %9s %d %2d:%2d:%2d %5s",
 773                         day, month, year, hh, mm, ss, zone);
 774         if (result == 7) return 0;
 775
 776         *zone = '\0';
 777         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d",
 778                         weekday, day, month, year, hh, mm, ss);
 779         if (result == 7) return 0;
 780
 781         result = sscanf(str, "%d %9s %d %2d:%2d:%2d",
 782                         day, month, year, hh, mm, ss);
 783         if (result == 6) return 0;
 784
 785         *ss = 0;
 786         result = sscanf(str, "%10s %d %9s %d %2d:%2d %5s",
 787                         weekday, day, month, year, hh, mm, zone);
 788         if (result == 7) return 0;
 789
 790         result = sscanf(str, "%d %9s %d %2d:%2d %5s",
 791                         day, month, year, hh, mm, zone);
 792         if (result == 6) return 0;
 793
 794         *zone = '\0';
 795         result = sscanf(str, "%10s %d %9s %d %2d:%2d",
 796                         weekday, day, month, year, hh, mm);
 797         if (result == 6) return 0;
 798
 799         result = sscanf(str, "%d %9s %d %2d:%2d",
 800                         day, month, year, hh, mm);
 801         if (result == 5) return 0;
 802
 803         /* RFC3339 subset */
 804         *weekday = '\0';
 805         result = sscanf(str, "%4d-%2d-%2d %2d:%2d:%2d+%2s:%2s",
 806                         year, &month_n, day, hh, mm, ss, zone1, zone2);
 807         if (result == 8) {
 808                 if (1 <= month_n && month_n <= 12) {
 809                         strncpy2(month, monthstr+((month_n-1)*3), 4);
 810                         *zone = '+';
 811                         strncpy2(zone+1, zone1, 3);
 812                         strncpy2(zone+3, zone2, 3);
 813                         return 0;
 814                 }
 815         }
 816
 817         /* RFC3339 subset */
 818         *zone = '\0';
 819         *weekday = '\0';
 820         result = sscanf(str, "%4d-%2d-%2d %2d:%2d:%2d",
 821                         year, &month_n, day, hh, mm, ss);
 822         if (result == 6) {
 823                 if (1 <= month_n && month_n <= 12) {
 824                         strncpy2(month, monthstr+((month_n-1)*3), 4);
 825                         return 0;
 826                 }
 827         }
 828
 829         return -1;
 830 }
 831
 832 /*
 833  * Hiro, most UNIXen support this function:
 834  * http://www.mcsr.olemiss.edu/cgi-bin/man-cgi?getdate
 835  */
 836 gboolean procheader_date_parse_to_tm(const gchar *src, struct tm *t, char *zone)
 837 {
 838         gchar weekday[11];
 839         gint day;
 840         gchar month[10];
 841         gint year;
 842         gint hh, mm, ss;
 843         GDateMonth dmonth;
 844         gchar *p;
 845
 846         if (!t)
 847                 return FALSE;
 848
 849         memset(t, 0, sizeof *t);
 850
 851         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 852                                         &hh, &mm, &ss, zone) < 0) {
 853                 g_warning("Invalid date: %s\n", src);
 854                 return FALSE;
 855         }
 856
 857         /* Y2K compliant :) */
 858         if (year < 100) {
 859                 if (year < 70)
 860                         year += 2000;
 861                 else
 862                         year += 1900;
 863         }
 864
 865         month[3] = '\0';
 866         if ((p = strstr(monthstr, month)) != NULL)
 867                 dmonth = (gint)(p - monthstr) / 3 + 1;
 868         else {
 869                 g_warning("Invalid month: %s\n", month);
 870                 dmonth = G_DATE_BAD_MONTH;
 871         }
 872
 873         t->tm_sec = ss;
 874         t->tm_min = mm;
 875         t->tm_hour = hh;
 876         t->tm_mday = day;
 877         t->tm_mon = dmonth - 1;
 878         t->tm_year = year - 1900;
 879         t->tm_wday = 0;
 880         t->tm_yday = 0;
 881         t->tm_isdst = -1;
 882
 883         mktime(t);
 884
 885         return TRUE;
 886 }
 887
 888 time_t procheader_date_parse(gchar *dest, const gchar *src, gint len)
 889 {
 890         gchar weekday[11];
 891         gint day;
 892         gchar month[10];
 893         gint year;
 894         gint hh, mm, ss;
 895         gchar zone[6];
 896         GDateMonth dmonth = G_DATE_BAD_MONTH;
 897         struct tm t;
 898         gchar *p;
 899         time_t timer;
 900         time_t tz_offset;
 901
 902         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 903                                         &hh, &mm, &ss, zone) < 0) {
 904                 if (dest && len > 0)
 905                         strncpy2(dest, src, len);
 906                 return 0;
 907         }
 908
 909         /* Y2K compliant :) */
 910         if (year < 1000) {
 911                 if (year < 50)
 912                         year += 2000;
 913                 else
 914                         year += 1900;
 915         }
 916
 917         month[3] = '\0';
 918         for (p = monthstr; *p != '\0'; p += 3) {
 919                 if (!g_ascii_strncasecmp(p, month, 3)) {
 920                         dmonth = (gint)(p - monthstr) / 3 + 1;
 921                         break;
 922                 }
 923         }
 924
 925         t.tm_sec = ss;
 926         t.tm_min = mm;
 927         t.tm_hour = hh;
 928         t.tm_mday = day;
 929         t.tm_mon = dmonth - 1;
 930         t.tm_year = year - 1900;
 931         t.tm_wday = 0;
 932         t.tm_yday = 0;
 933         t.tm_isdst = -1;
 934
 935         timer = mktime(&t);
 936         tz_offset = remote_tzoffset_sec(zone);
 937         if (tz_offset != -1)
 938                 timer += tzoffset_sec(&timer) - tz_offset;
 939
 940         if (dest)
 941                 procheader_date_get_localtime(dest, len, timer);
 942
 943         return timer;
 944 }
 945
 946 void procheader_date_get_localtime(gchar *dest, gint len, const time_t timer)
 947 {
 948         struct tm *lt;
 949         gchar *default_format = "%y/%m/%d(%a) %H:%M";
 950         gchar *str;
 951         const gchar *src_codeset, *dest_codeset;
 952         struct tm buf;
 953
 954         if (timer > 0)
 955                 lt = localtime_r(&timer, &buf);
 956         else {
 957                 time_t dummy = 1;
 958                 lt = localtime_r(&dummy, &buf);
 959         }
 960
 961         if (prefs_common.date_format)
 962                 fast_strftime(dest, len, prefs_common.date_format, lt);
 963         else
 964                 fast_strftime(dest, len, default_format, lt);
 965
 966         if (!g_utf8_validate(dest, -1, NULL)) {
 967                 src_codeset = conv_get_locale_charset_str_no_utf8();
 968                 dest_codeset = CS_UTF_8;
 969                 str = conv_codeset_strdup(dest, src_codeset, dest_codeset);
 970                 if (str) {
 971                         strncpy2(dest, str, len);
 972                         g_free(str);
 973                 }
 974         }
 975 }
 976
 977 /* Added by Mel Hadasht on 27 Aug 2001 */
 978 /* Get a header from msginfo */
 979 gint procheader_get_header_from_msginfo(MsgInfo *msginfo, gchar *buf, gint len, gchar *header)
 980 {
 981         gchar *file;
 982         FILE *fp;
 983         HeaderEntry hentry[]={ { NULL, NULL, TRUE  },
 984                                { NULL, NULL, FALSE } };
 985         gint val;
 986
 987         hentry[0].name = header;
 988
 989         cm_return_val_if_fail(msginfo != NULL, -1);
 990         file = procmsg_get_message_file_path(msginfo);
 991         if ((fp = g_fopen(file, "rb")) == NULL) {
 992                FILE_OP_ERROR(file, "fopen");
 993                g_free(file);
 994                return -1;
 995         }
 996         val = procheader_get_one_field(buf,len, fp, hentry);
 997         if (fclose(fp) == EOF) {
 998                 FILE_OP_ERROR(file, "fclose");
 999                 claws_unlink(file);
1000                 g_free(file);
1001                 return -1;
1002         }
1003
1004         g_free(file);
1005         if (val == -1)
1006                 return -1;
1007
1008         return 0;
1009 }