src/procheader.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2007 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 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                         gboolean skiptab = (nexthead == '\t');
 138                         /* trim previous trailing \n if requesting one header or
 139                          * unfolding was requested */
 140                         if ((!hentry && unfold) || (hp && hp->unfold))
 141                                 strretchomp(buf);
 142
 143                         buflen = strlen(buf);
 144
 145                         /* concatenate next line */
 146                         if ((len - buflen) > 2) {
 147                                 if (getline(buf + buflen, len - buflen, data) == NULL)
 148                                         break;
 149                                 if (skiptab) { /* replace tab with space */
 150                                         *(buf + buflen) = ' ';
 151                                 }
 152                         } else
 153                                 break;
 154                 } else {
 155                         /* remove trailing new line */
 156                         strretchomp(buf);
 157                         break;
 158                 }
 159         }
 160
 161         return hnum;
 162 }
 163
 164 gint procheader_get_one_field_asis(gchar *buf, size_t len, FILE *fp)
 165 {
 166         return generic_get_one_field(buf, len, fp, NULL,
 167                                      (getlinefunc)fgets,
 168                                      (peekcharfunc)file_peekchar,
 169                                      FALSE);
 170 }
 171
 172 GPtrArray *procheader_get_header_array_asis(FILE *fp)
 173 {
 174         gchar buf[BUFFSIZE];
 175         GPtrArray *headers;
 176         Header *header;
 177
 178         g_return_val_if_fail(fp != NULL, NULL);
 179
 180         headers = g_ptr_array_new();
 181
 182         while (procheader_get_one_field_asis(buf, sizeof(buf), fp) != -1) {
 183                 if ((header = procheader_parse_header(buf)) != NULL)
 184                         g_ptr_array_add(headers, header);
 185                         /*
 186                 if (*buf == ':') continue;
 187                 for (p = buf; *p && *p != ' '; p++) {
 188                         if (*p == ':') {
 189                                 header = g_new(Header, 1);
 190                                 header->name = g_strndup(buf, p - buf);
 191                                 p++;
 192                                 conv_unmime_header(tmp, sizeof(tmp), p, NULL);
 193                                 header->body = g_strdup(tmp);
 194
 195                                 g_ptr_array_add(headers, header);
 196                                 break;
 197                         }
 198                 }
 199                         */
 200         }
 201
 202         return headers;
 203 }
 204
 205 void procheader_header_array_destroy(GPtrArray *harray)
 206 {
 207         gint i;
 208         Header *header;
 209
 210         for (i = 0; i < harray->len; i++) {
 211                 header = g_ptr_array_index(harray, i);
 212                 procheader_header_free(header);
 213         }
 214
 215         g_ptr_array_free(harray, TRUE);
 216 }
 217
 218 void procheader_header_free(Header *header)
 219 {
 220         if (!header) return;
 221
 222         g_free(header->name);
 223         g_free(header->body);
 224         g_free(header);
 225 }
 226
 227 /*
 228   tests whether two headers' names are equal
 229   remove the trailing ':' or ' ' before comparing
 230 */
 231
 232 gboolean procheader_headername_equal(char * hdr1, char * hdr2)
 233 {
 234         int len1;
 235         int len2;
 236
 237         len1 = strlen(hdr1);
 238         len2 = strlen(hdr2);
 239         if (hdr1[len1 - 1] == ':')
 240                 len1--;
 241         if (hdr2[len2 - 1] == ':')
 242                 len2--;
 243         if (len1 != len2)
 244                 return 0;
 245
 246         return (g_ascii_strncasecmp(hdr1, hdr2, len1) == 0);
 247 }
 248
 249 /*
 250   parse headers, for example :
 251   From: dinh@enseirb.fr becomes :
 252   header->name = "From:"
 253   header->body = "dinh@enseirb.fr"
 254  */
 255
 256 Header * procheader_parse_header(gchar * buf)
 257 {
 258         gchar *p = buf;
 259         Header * header;
 260
 261         if ((*buf == ':') || (*buf == ' '))
 262                 return NULL;
 263
 264         for (p = buf; *p ; p++) {
 265                 if ((*p == ':') || (*p == ' ')) {
 266                         header = g_new(Header, 1);
 267                         header->name = g_strndup(buf, p - buf + 1);
 268                         p++;
 269                         while (*p == ' ' || *p == '\t') p++;
 270                         header->body = conv_unmime_header(p, NULL);
 271                         return header;
 272                 }
 273         }
 274         return NULL;
 275 }
 276
 277 void procheader_get_header_fields(FILE *fp, HeaderEntry hentry[])
 278 {
 279         gchar buf[BUFFSIZE];
 280         HeaderEntry *hp;
 281         gint hnum;
 282         gchar *p;
 283
 284         if (hentry == NULL) return;
 285
 286         while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, hentry))
 287                != -1) {
 288                 hp = hentry + hnum;
 289
 290                 p = buf + strlen(hp->name);
 291                 while (*p == ' ' || *p == '\t') p++;
 292
 293                 if (hp->body == NULL)
 294                         hp->body = g_strdup(p);
 295                 else if (procheader_headername_equal(hp->name, "To") ||
 296                          procheader_headername_equal(hp->name, "Cc")) {
 297                         gchar *tp = hp->body;
 298                         hp->body = g_strconcat(tp, ", ", p, NULL);
 299                         g_free(tp);
 300                 }
 301         }
 302 }
 303
 304 MsgInfo *procheader_parse_file(const gchar *file, MsgFlags flags,
 305                                gboolean full, gboolean decrypted)
 306 {
 307         struct stat s;
 308         FILE *fp;
 309         MsgInfo *msginfo;
 310
 311         if (stat(file, &s) < 0) {
 312                 FILE_OP_ERROR(file, "stat");
 313                 return NULL;
 314         }
 315         if (!S_ISREG(s.st_mode))
 316                 return NULL;
 317
 318         if ((fp = g_fopen(file, "rb")) == NULL) {
 319                 FILE_OP_ERROR(file, "fopen");
 320                 return NULL;
 321         }
 322
 323         msginfo = procheader_parse_stream(fp, flags, full, decrypted);
 324         fclose(fp);
 325
 326         if (msginfo) {
 327                 msginfo->size = s.st_size;
 328                 msginfo->mtime = s.st_mtime;
 329         }
 330
 331         return msginfo;
 332 }
 333
 334 MsgInfo *procheader_parse_str(const gchar *str, MsgFlags flags, gboolean full,
 335                               gboolean decrypted)
 336 {
 337         return parse_stream(&str, TRUE, flags, full, decrypted);
 338 }
 339
 340 enum
 341 {
 342         H_DATE          = 0,
 343         H_FROM          = 1,
 344         H_TO            = 2,
 345         H_CC            = 3,
 346         H_NEWSGROUPS    = 4,
 347         H_SUBJECT       = 5,
 348         H_MSG_ID        = 6,
 349         H_REFERENCES    = 7,
 350         H_IN_REPLY_TO   = 8,
 351         H_CONTENT_TYPE  = 9,
 352         H_SEEN          = 10,
 353         H_STATUS        = 11,
 354         H_X_STATUS      = 12,
 355         H_FROM_SPACE    = 13,
 356         H_SC_PLANNED_DOWNLOAD = 14,
 357         H_SC_MESSAGE_SIZE = 15,
 358         H_FACE          = 16,
 359         H_X_FACE        = 17,
 360         H_DISPOSITION_NOTIFICATION_TO = 18,
 361         H_RETURN_RECEIPT_TO = 19,
 362         H_SC_PARTIALLY_RETRIEVED = 20,
 363         H_SC_ACCOUNT_SERVER = 21,
 364         H_SC_ACCOUNT_LOGIN = 22,
 365         H_LIST_POST        = 23,
 366         H_LIST_SUBSCRIBE   = 24,
 367         H_LIST_UNSUBSCRIBE = 25,
 368         H_LIST_HELP        = 26,
 369         H_LIST_ARCHIVE     = 27,
 370         H_LIST_OWNER       = 28,
 371 };
 372
 373 static HeaderEntry hentry_full[] = {{"Date:",           NULL, FALSE},
 374                                    {"From:",            NULL, TRUE},
 375                                    {"To:",              NULL, TRUE},
 376                                    {"Cc:",              NULL, TRUE},
 377                                    {"Newsgroups:",      NULL, TRUE},
 378                                    {"Subject:",         NULL, TRUE},
 379                                    {"Message-ID:",      NULL, FALSE},
 380                                    {"References:",      NULL, FALSE},
 381                                    {"In-Reply-To:",     NULL, FALSE},
 382                                    {"Content-Type:",    NULL, FALSE},
 383                                    {"Seen:",            NULL, FALSE},
 384                                    {"Status:",          NULL, FALSE},
 385                                    {"X-Status:",        NULL, FALSE},
 386                                    {"From ",            NULL, FALSE},
 387                                    {"SC-Marked-For-Download:", NULL, FALSE},
 388                                    {"SC-Message-Size:", NULL, FALSE},
 389                                    {"Face:",            NULL, FALSE},
 390                                    {"X-Face:",          NULL, FALSE},
 391                                    {"Disposition-Notification-To:", NULL, FALSE},
 392                                    {"Return-Receipt-To:", NULL, FALSE},
 393                                    {"SC-Partially-Retrieved:", NULL, FALSE},
 394                                    {"SC-Account-Server:", NULL, FALSE},
 395                                    {"SC-Account-Login:",NULL, FALSE},
 396                                    {"List-Post:",       NULL, TRUE},
 397                                    {"List-Subscribe:",  NULL, TRUE},
 398                                    {"List-Unsubscribe:",NULL, TRUE},
 399                                    {"List-Help:",       NULL, TRUE},
 400                                    {"List-Archive:",    NULL, TRUE},
 401                                    {"List-Owner:",      NULL, TRUE},
 402                                    {NULL,               NULL, FALSE}};
 403
 404 static HeaderEntry hentry_short[] = {{"Date:",          NULL, FALSE},
 405                                     {"From:",           NULL, TRUE},
 406                                     {"To:",             NULL, TRUE},
 407                                     {"Cc:",             NULL, TRUE},
 408                                     {"Newsgroups:",     NULL, TRUE},
 409                                     {"Subject:",        NULL, TRUE},
 410                                     {"Message-ID:",     NULL, FALSE},
 411                                     {"References:",     NULL, FALSE},
 412                                     {"In-Reply-To:",    NULL, FALSE},
 413                                     {"Content-Type:",   NULL, FALSE},
 414                                     {"Seen:",           NULL, FALSE},
 415                                     {"Status:",         NULL, FALSE},
 416                                     {"X-Status:",       NULL, FALSE},
 417                                     {"From ",           NULL, FALSE},
 418                                     {"SC-Marked-For-Download:", NULL, FALSE},
 419                                     {"SC-Message-Size:",NULL, FALSE},
 420                                     {NULL,              NULL, FALSE}};
 421
 422 HeaderEntry* procheader_get_headernames(gboolean full)
 423 {
 424         return full ? hentry_full : hentry_short;
 425 }
 426
 427 MsgInfo *procheader_parse_stream(FILE *fp, MsgFlags flags, gboolean full,
 428                                  gboolean decrypted)
 429 {
 430         return parse_stream(fp, FALSE, flags, full, decrypted);
 431 }
 432
 433 static MsgInfo *parse_stream(void *data, gboolean isstring, MsgFlags flags,
 434                              gboolean full, gboolean decrypted)
 435 {
 436         MsgInfo *msginfo;
 437         gchar buf[BUFFSIZE];
 438         gchar *p, *tmp;
 439         gchar *hp;
 440         HeaderEntry *hentry;
 441         gint hnum;
 442         void *orig_data = data;
 443
 444         get_one_field_func get_one_field =
 445                 isstring ? (get_one_field_func)string_get_one_field
 446                          : (get_one_field_func)procheader_get_one_field;
 447
 448         hentry = procheader_get_headernames(full);
 449
 450         if (MSG_IS_QUEUED(flags) || MSG_IS_DRAFT(flags)) {
 451                 while (get_one_field(buf, sizeof(buf), data, NULL) != -1) {
 452                         if ((!strncmp(buf, "X-Claws-End-Special-Headers: 1",
 453                                 strlen("X-Claws-End-Special-Headers:"))) ||
 454                             (!strncmp(buf, "X-Sylpheed-End-Special-Headers: 1",
 455                                 strlen("X-Sylpheed-End-Special-Headers:"))))
 456                                 break;
 457                         /* from other mailers */
 458                         if (!strncmp(buf, "Date: ", 6)
 459                         ||  !strncmp(buf, "To: ", 4)
 460                         ||  !strncmp(buf, "From: ", 6)
 461                         ||  !strncmp(buf, "Subject: ", 9)) {
 462                                 if (isstring)
 463                                         data = orig_data;
 464                                 else
 465                                         rewind((FILE *)data);
 466                                 break;
 467                         }
 468                 }
 469         }
 470
 471         msginfo = procmsg_msginfo_new();
 472
 473         if (flags.tmp_flags || flags.perm_flags)
 474                 msginfo->flags = flags;
 475         else
 476                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_NEW | MSG_UNREAD);
 477
 478         msginfo->inreplyto = NULL;
 479
 480         while ((hnum = get_one_field(buf, sizeof(buf), data, hentry))
 481                != -1) {
 482                 hp = buf + strlen(hentry[hnum].name);
 483                 while (*hp == ' ' || *hp == '\t') hp++;
 484
 485                 switch (hnum) {
 486                 case H_DATE:
 487                         if (msginfo->date) break;
 488                         msginfo->date_t =
 489                                 procheader_date_parse(NULL, hp, 0);
 490                         if (g_utf8_validate(hp, -1, NULL)) {
 491                                 msginfo->date = g_strdup(hp);
 492                         } else {
 493                                 gchar *utf = conv_codeset_strdup(
 494                                         hp,
 495                                         conv_get_locale_charset_str_no_utf8(),
 496                                         CS_INTERNAL);
 497                                 if (utf == NULL ||
 498                                     !g_utf8_validate(utf, -1, NULL)) {
 499                                         g_free(utf);
 500                                         utf = g_malloc(strlen(buf)*2+1);
 501                                         conv_localetodisp(utf,
 502                                                 strlen(hp)*2+1, hp);
 503                                 }
 504                                 msginfo->date = utf;
 505                         }
 506                         break;
 507                 case H_FROM:
 508                         if (msginfo->from) break;
 509                         msginfo->from = conv_unmime_header(hp, NULL);
 510                         msginfo->fromname = procheader_get_fromname(msginfo->from);
 511                         remove_return(msginfo->from);
 512                         remove_return(msginfo->fromname);
 513                         break;
 514                 case H_TO:
 515                         tmp = conv_unmime_header(hp, NULL);
 516                         remove_return(tmp);
 517                         if (msginfo->to) {
 518                                 p = msginfo->to;
 519                                 msginfo->to =
 520                                         g_strconcat(p, ", ", tmp, NULL);
 521                                 g_free(p);
 522                         } else
 523                                 msginfo->to = g_strdup(tmp);
 524                         g_free(tmp);
 525                         break;
 526                 case H_CC:
 527                         tmp = conv_unmime_header(hp, NULL);
 528                         remove_return(tmp);
 529                         if (msginfo->cc) {
 530                                 p = msginfo->cc;
 531                                 msginfo->cc =
 532                                         g_strconcat(p, ", ", tmp, NULL);
 533                                 g_free(p);
 534                         } else
 535                                 msginfo->cc = g_strdup(tmp);
 536                         g_free(tmp);
 537                         break;
 538                 case H_NEWSGROUPS:
 539                         if (msginfo->newsgroups) {
 540                                 p = msginfo->newsgroups;
 541                                 msginfo->newsgroups =
 542                                         g_strconcat(p, ",", hp, NULL);
 543                                 g_free(p);
 544                         } else
 545                                 msginfo->newsgroups = g_strdup(hp);
 546                         break;
 547                 case H_SUBJECT:
 548                         if (msginfo->subject) break;
 549                         msginfo->subject = conv_unmime_header(hp, NULL);
 550                         unfold_line(msginfo->subject);
 551                        break;
 552                 case H_MSG_ID:
 553                         if (msginfo->msgid) break;
 554
 555                         extract_parenthesis(hp, '<', '>');
 556                         remove_space(hp);
 557                         msginfo->msgid = g_strdup(hp);
 558                         break;
 559                 case H_REFERENCES:
 560                         msginfo->references =
 561                                 references_list_prepend(msginfo->references,
 562                                                         hp);
 563                         break;
 564                 case H_IN_REPLY_TO:
 565                         if (msginfo->inreplyto) break;
 566
 567                         eliminate_parenthesis(hp, '(', ')');
 568                         if ((p = strrchr(hp, '<')) != NULL &&
 569                             strchr(p + 1, '>') != NULL) {
 570                                 extract_parenthesis(p, '<', '>');
 571                                 remove_space(p);
 572                                 if (*p != '\0')
 573                                         msginfo->inreplyto = g_strdup(p);
 574                         }
 575                         break;
 576                 case H_CONTENT_TYPE:
 577                         if (!g_ascii_strncasecmp(hp, "multipart/", 10))
 578                                 MSG_SET_TMP_FLAGS(msginfo->flags, MSG_MULTIPART);
 579                         break;
 580 #ifdef ALLOW_HEADER_HINT
 581                 case H_SEEN:
 582                         /* mnews Seen header */
 583                         MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW|MSG_UNREAD);
 584                         break;
 585 #endif
 586                 case H_FACE:
 587                         if (!msginfo->extradata)
 588                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 589                         if (msginfo->extradata->face) break;
 590                         msginfo->extradata->face = g_strdup(hp);
 591                         break;
 592                 case H_X_FACE:
 593                         if (!msginfo->extradata)
 594                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 595                         if (msginfo->extradata->xface) break;
 596                         msginfo->extradata->xface = g_strdup(hp);
 597                         break;
 598                 case H_DISPOSITION_NOTIFICATION_TO:
 599                         if (!msginfo->extradata)
 600                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 601                         if (msginfo->extradata->dispositionnotificationto) break;
 602                         msginfo->extradata->dispositionnotificationto = g_strdup(hp);
 603                         break;
 604                 case H_RETURN_RECEIPT_TO:
 605                         if (!msginfo->extradata)
 606                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 607                         if (msginfo->extradata->returnreceiptto) break;
 608                         msginfo->extradata->returnreceiptto = g_strdup(hp);
 609                         break;
 610 /* partial download infos */
 611                 case H_SC_PARTIALLY_RETRIEVED:
 612                         if (!msginfo->extradata)
 613                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 614                         if (msginfo->extradata->partial_recv) break;
 615                         msginfo->extradata->partial_recv = g_strdup(hp);
 616                         break;
 617                 case H_SC_ACCOUNT_SERVER:
 618                         if (!msginfo->extradata)
 619                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 620                         if (msginfo->extradata->account_server) break;
 621                         msginfo->extradata->account_server = g_strdup(hp);
 622                         break;
 623                 case H_SC_ACCOUNT_LOGIN:
 624                         if (!msginfo->extradata)
 625                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 626                         if (msginfo->extradata->account_login) break;
 627                         msginfo->extradata->account_login = g_strdup(hp);
 628                         break;
 629                 case H_SC_MESSAGE_SIZE:
 630                         if (msginfo->total_size) break;
 631                         msginfo->total_size = atoi(hp);
 632                         break;
 633                 case H_SC_PLANNED_DOWNLOAD:
 634                         msginfo->planned_download = atoi(hp);
 635                         break;
 636 /* end partial download infos */
 637 #ifdef ALLOW_HEADER_HINT
 638                 case H_STATUS:
 639                         if (strchr(hp, 'R') != NULL)
 640                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 641                         if (strchr(hp, 'O') != NULL)
 642                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW);
 643                         if (strchr(hp, 'U') != NULL)
 644                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 645                         break;
 646                 case H_X_STATUS:
 647                         if (strchr(hp, 'D') != NULL)
 648                                 MSG_SET_PERM_FLAGS(msginfo->flags,
 649                                               MSG_REALLY_DELETED);
 650                         if (strchr(hp, 'F') != NULL)
 651                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_MARKED);
 652                         if (strchr(hp, 'd') != NULL)
 653                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_DELETED);
 654                         if (strchr(hp, 'r') != NULL)
 655                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_REPLIED);
 656                         if (strchr(hp, 'f') != NULL)
 657                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_FORWARDED);
 658                         break;
 659 #endif
 660                 case H_FROM_SPACE:
 661                         if (msginfo->fromspace) break;
 662                         msginfo->fromspace = g_strdup(hp);
 663                         remove_return(msginfo->fromspace);
 664                         break;
 665 /* list infos */
 666                 case H_LIST_POST:
 667                         if (!msginfo->extradata)
 668                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 669                         if (msginfo->extradata->list_post) break;
 670                         msginfo->extradata->list_post = g_strdup(hp);
 671                         break;
 672                 case H_LIST_SUBSCRIBE:
 673                         if (!msginfo->extradata)
 674                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 675                         if (msginfo->extradata->list_subscribe) break;
 676                         msginfo->extradata->list_subscribe = g_strdup(hp);
 677                         break;
 678                 case H_LIST_UNSUBSCRIBE:
 679                         if (!msginfo->extradata)
 680                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 681                         if (msginfo->extradata->list_unsubscribe) break;
 682                         msginfo->extradata->list_unsubscribe = g_strdup(hp);
 683                         break;
 684                 case H_LIST_HELP:
 685                         if (!msginfo->extradata)
 686                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 687                         if (msginfo->extradata->list_help) break;
 688                         msginfo->extradata->list_help = g_strdup(hp);
 689                         break;
 690                 case H_LIST_ARCHIVE:
 691                         if (!msginfo->extradata)
 692                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 693                         if (msginfo->extradata->list_archive) break;
 694                         msginfo->extradata->list_archive = g_strdup(hp);
 695                         break;
 696                 case H_LIST_OWNER:
 697                         if (!msginfo->extradata)
 698                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 699                         if (msginfo->extradata->list_owner) break;
 700                         msginfo->extradata->list_owner = g_strdup(hp);
 701                         break;
 702 /* end list infos */
 703                 default:
 704                         break;
 705                 }
 706         }
 707
 708         if (!msginfo->inreplyto && msginfo->references)
 709                 msginfo->inreplyto =
 710                         g_strdup((gchar *)msginfo->references->data);
 711
 712         return msginfo;
 713 }
 714
 715 gchar *procheader_get_fromname(const gchar *str)
 716 {
 717         gchar *tmp, *name;
 718
 719         Xstrdup_a(tmp, str, return NULL);
 720
 721         if (*tmp == '\"') {
 722                 extract_quote(tmp, '\"');
 723                 g_strstrip(tmp);
 724         } else if (strchr(tmp, '<')) {
 725                 eliminate_parenthesis(tmp, '<', '>');
 726                 g_strstrip(tmp);
 727                 if (*tmp == '\0') {
 728                         strcpy(tmp, str);
 729                         extract_parenthesis(tmp, '<', '>');
 730                         g_strstrip(tmp);
 731                 }
 732         } else if (strchr(tmp, '(')) {
 733                 extract_parenthesis(tmp, '(', ')');
 734                 g_strstrip(tmp);
 735         }
 736
 737         if (*tmp == '\0')
 738                 name = g_strdup(str);
 739         else
 740                 name = g_strdup(tmp);
 741
 742         return name;
 743 }
 744
 745 static gint procheader_scan_date_string(const gchar *str,
 746                                         gchar *weekday, gint *day,
 747                                         gchar *month, gint *year,
 748                                         gint *hh, gint *mm, gint *ss,
 749                                         gchar *zone)
 750 {
 751         gint result;
 752
 753         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d %5s",
 754                         weekday, day, month, year, hh, mm, ss, zone);
 755         if (result == 8) return 0;
 756
 757         result = sscanf(str, "%3s,%d %9s %d %2d:%2d:%2d %5s",
 758                         weekday, day, month, year, hh, mm, ss, zone);
 759         if (result == 8) return 0;
 760
 761         result = sscanf(str, "%d %9s %d %2d:%2d:%2d %5s",
 762                         day, month, year, hh, mm, ss, zone);
 763         if (result == 7) return 0;
 764
 765         *zone = '\0';
 766         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d",
 767                         weekday, day, month, year, hh, mm, ss);
 768         if (result == 7) return 0;
 769
 770         result = sscanf(str, "%d %9s %d %2d:%2d:%2d",
 771                         day, month, year, hh, mm, ss);
 772         if (result == 6) return 0;
 773
 774         *ss = 0;
 775         result = sscanf(str, "%10s %d %9s %d %2d:%2d %5s",
 776                         weekday, day, month, year, hh, mm, zone);
 777         if (result == 7) return 0;
 778
 779         result = sscanf(str, "%d %9s %d %2d:%2d %5s",
 780                         day, month, year, hh, mm, zone);
 781         if (result == 6) return 0;
 782
 783         *zone = '\0';
 784         result = sscanf(str, "%10s %d %9s %d %2d:%2d",
 785                         weekday, day, month, year, hh, mm);
 786         if (result == 6) return 0;
 787
 788         result = sscanf(str, "%d %9s %d %2d:%2d",
 789                         day, month, year, hh, mm);
 790         if (result == 5) return 0;
 791
 792         return -1;
 793 }
 794
 795 /*
 796  * Hiro, most UNIXen support this function:
 797  * http://www.mcsr.olemiss.edu/cgi-bin/man-cgi?getdate
 798  */
 799 gboolean procheader_date_parse_to_tm(const gchar *src, struct tm *t, char *zone)
 800 {
 801         static gchar monthstr[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
 802         gchar weekday[11];
 803         gint day;
 804         gchar month[10];
 805         gint year;
 806         gint hh, mm, ss;
 807         GDateMonth dmonth;
 808         gchar *p;
 809
 810         if (!t)
 811                 return FALSE;
 812
 813         memset(t, 0, sizeof *t);
 814
 815         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 816                                         &hh, &mm, &ss, zone) < 0) {
 817                 g_warning("Invalid date: %s\n", src);
 818                 return FALSE;
 819         }
 820
 821         /* Y2K compliant :) */
 822         if (year < 100) {
 823                 if (year < 70)
 824                         year += 2000;
 825                 else
 826                         year += 1900;
 827         }
 828
 829         month[3] = '\0';
 830         if ((p = strstr(monthstr, month)) != NULL)
 831                 dmonth = (gint)(p - monthstr) / 3 + 1;
 832         else {
 833                 g_warning("Invalid month: %s\n", month);
 834                 dmonth = G_DATE_BAD_MONTH;
 835         }
 836
 837         t->tm_sec = ss;
 838         t->tm_min = mm;
 839         t->tm_hour = hh;
 840         t->tm_mday = day;
 841         t->tm_mon = dmonth - 1;
 842         t->tm_year = year - 1900;
 843         t->tm_wday = 0;
 844         t->tm_yday = 0;
 845         t->tm_isdst = -1;
 846
 847         mktime(t);
 848
 849         return TRUE;
 850 }
 851
 852 time_t procheader_date_parse(gchar *dest, const gchar *src, gint len)
 853 {
 854         static gchar monthstr[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
 855         gchar weekday[11];
 856         gint day;
 857         gchar month[10];
 858         gint year;
 859         gint hh, mm, ss;
 860         gchar zone[6];
 861         GDateMonth dmonth = G_DATE_BAD_MONTH;
 862         struct tm t;
 863         gchar *p;
 864         time_t timer;
 865         time_t tz_offset;
 866
 867         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 868                                         &hh, &mm, &ss, zone) < 0) {
 869                 if (dest && len > 0)
 870                         strncpy2(dest, src, len);
 871                 return 0;
 872         }
 873
 874         /* Y2K compliant :) */
 875         if (year < 1000) {
 876                 if (year < 50)
 877                         year += 2000;
 878                 else
 879                         year += 1900;
 880         }
 881
 882         month[3] = '\0';
 883         for (p = monthstr; *p != '\0'; p += 3) {
 884                 if (!g_ascii_strncasecmp(p, month, 3)) {
 885                         dmonth = (gint)(p - monthstr) / 3 + 1;
 886                         break;
 887                 }
 888         }
 889
 890         t.tm_sec = ss;
 891         t.tm_min = mm;
 892         t.tm_hour = hh;
 893         t.tm_mday = day;
 894         t.tm_mon = dmonth - 1;
 895         t.tm_year = year - 1900;
 896         t.tm_wday = 0;
 897         t.tm_yday = 0;
 898         t.tm_isdst = -1;
 899
 900         timer = mktime(&t);
 901         tz_offset = remote_tzoffset_sec(zone);
 902         if (tz_offset != -1)
 903                 timer += tzoffset_sec(&timer) - tz_offset;
 904
 905         if (dest)
 906                 procheader_date_get_localtime(dest, len, timer);
 907
 908         return timer;
 909 }
 910
 911 void procheader_date_get_localtime(gchar *dest, gint len, const time_t timer)
 912 {
 913         struct tm *lt;
 914         gchar *default_format = "%y/%m/%d(%a) %H:%M";
 915         gchar *str;
 916         const gchar *src_codeset, *dest_codeset;
 917
 918         lt = localtime(&timer);
 919
 920         if (prefs_common.date_format)
 921                 fast_strftime(dest, len, prefs_common.date_format, lt);
 922         else
 923                 fast_strftime(dest, len, default_format, lt);
 924
 925         if (!g_utf8_validate(dest, -1, NULL)) {
 926                 src_codeset = conv_get_locale_charset_str_no_utf8();
 927                 dest_codeset = CS_UTF_8;
 928                 str = conv_codeset_strdup(dest, src_codeset, dest_codeset);
 929                 if (str) {
 930                         strncpy2(dest, str, len);
 931                         g_free(str);
 932                 }
 933         }
 934 }
 935
 936 /* Added by Mel Hadasht on 27 Aug 2001 */
 937 /* Get a header from msginfo */
 938 gint procheader_get_header_from_msginfo(MsgInfo *msginfo, gchar *buf, gint len, gchar *header)
 939 {
 940         gchar *file;
 941         FILE *fp;
 942         HeaderEntry hentry[]={ { NULL, NULL, TRUE  },
 943                                { NULL, NULL, FALSE } };
 944         gint val;
 945
 946         hentry[0].name = header;
 947
 948         g_return_val_if_fail(msginfo != NULL, -1);
 949         file = procmsg_get_message_file_path(msginfo);
 950         if ((fp = g_fopen(file, "rb")) == NULL) {
 951                FILE_OP_ERROR(file, "fopen");
 952                g_free(file);
 953                return -1;
 954         }
 955         val = procheader_get_one_field(buf,len, fp, hentry);
 956         if (fclose(fp) == EOF) {
 957                 FILE_OP_ERROR(file, "fclose");
 958                 g_unlink(file);
 959                 g_free(file);
 960                 return -1;
 961         }
 962
 963         g_free(file);
 964         if (val == -1)
 965                 return -1;
 966
 967         return 0;
 968 }