src/procheader.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2011 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 static gboolean header_is_addr_field(const gchar *hdr)
 260 {
 261         static char *addr_headers[] = {
 262                                 "To:",
 263                                 "Cc:",
 264                                 "Bcc:",
 265                                 "From:",
 266                                 "Reply-To:",
 267                                 "Followup-To:",
 268                                 "Followup-and-Reply-To:",
 269                                 "Disposition-Notification-To:",
 270                                 "Return-Receipt-To:",
 271                                 NULL};
 272         int i;
 273
 274         if (!hdr)
 275                 return FALSE;
 276
 277         for (i = 0; addr_headers[i] != NULL; i++)
 278                 if (!strcasecmp(hdr, addr_headers[i]))
 279                         return FALSE;
 280
 281         return FALSE;
 282 }
 283
 284 Header * procheader_parse_header(gchar * buf)
 285 {
 286         gchar *p = buf;
 287         Header * header;
 288         gboolean addr_field = FALSE;
 289
 290         if ((*buf == ':') || (*buf == ' '))
 291                 return NULL;
 292
 293         for (p = buf; *p ; p++) {
 294                 if ((*p == ':') || (*p == ' ')) {
 295                         header = g_new(Header, 1);
 296                         header->name = g_strndup(buf, p - buf + 1);
 297                         addr_field = header_is_addr_field(header->name);
 298                         p++;
 299                         while (*p == ' ' || *p == '\t') p++;
 300                         header->body = conv_unmime_header(p, NULL, addr_field);
 301                         return header;
 302                 }
 303         }
 304         return NULL;
 305 }
 306
 307 void procheader_get_header_fields(FILE *fp, HeaderEntry hentry[])
 308 {
 309         gchar buf[BUFFSIZE];
 310         HeaderEntry *hp;
 311         gint hnum;
 312         gchar *p;
 313
 314         if (hentry == NULL) return;
 315
 316         while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, hentry))
 317                != -1) {
 318                 hp = hentry + hnum;
 319
 320                 p = buf + strlen(hp->name);
 321                 while (*p == ' ' || *p == '\t') p++;
 322
 323                 if (hp->body == NULL)
 324                         hp->body = g_strdup(p);
 325                 else if (procheader_headername_equal(hp->name, "To") ||
 326                          procheader_headername_equal(hp->name, "Cc")) {
 327                         gchar *tp = hp->body;
 328                         hp->body = g_strconcat(tp, ", ", p, NULL);
 329                         g_free(tp);
 330                 }
 331         }
 332 }
 333
 334 MsgInfo *procheader_parse_file(const gchar *file, MsgFlags flags,
 335                                gboolean full, gboolean decrypted)
 336 {
 337         struct stat s;
 338         FILE *fp;
 339         MsgInfo *msginfo;
 340
 341         if (g_stat(file, &s) < 0) {
 342                 FILE_OP_ERROR(file, "stat");
 343                 return NULL;
 344         }
 345         if (!S_ISREG(s.st_mode))
 346                 return NULL;
 347
 348         if ((fp = g_fopen(file, "rb")) == NULL) {
 349                 FILE_OP_ERROR(file, "fopen");
 350                 return NULL;
 351         }
 352
 353         msginfo = procheader_parse_stream(fp, flags, full, decrypted);
 354         fclose(fp);
 355
 356         if (msginfo) {
 357                 msginfo->size = s.st_size;
 358                 msginfo->mtime = s.st_mtime;
 359         }
 360
 361         return msginfo;
 362 }
 363
 364 MsgInfo *procheader_parse_str(const gchar *str, MsgFlags flags, gboolean full,
 365                               gboolean decrypted)
 366 {
 367         return parse_stream(&str, TRUE, flags, full, decrypted);
 368 }
 369
 370 enum
 371 {
 372         H_DATE          = 0,
 373         H_FROM          = 1,
 374         H_TO            = 2,
 375         H_CC            = 3,
 376         H_NEWSGROUPS    = 4,
 377         H_SUBJECT       = 5,
 378         H_MSG_ID        = 6,
 379         H_REFERENCES    = 7,
 380         H_IN_REPLY_TO   = 8,
 381         H_CONTENT_TYPE  = 9,
 382         H_SEEN          = 10,
 383         H_STATUS        = 11,
 384         H_X_STATUS      = 12,
 385         H_FROM_SPACE    = 13,
 386         H_SC_PLANNED_DOWNLOAD = 14,
 387         H_SC_MESSAGE_SIZE = 15,
 388         H_FACE          = 16,
 389         H_X_FACE        = 17,
 390         H_DISPOSITION_NOTIFICATION_TO = 18,
 391         H_RETURN_RECEIPT_TO = 19,
 392         H_SC_PARTIALLY_RETRIEVED = 20,
 393         H_SC_ACCOUNT_SERVER = 21,
 394         H_SC_ACCOUNT_LOGIN = 22,
 395         H_LIST_POST        = 23,
 396         H_LIST_SUBSCRIBE   = 24,
 397         H_LIST_UNSUBSCRIBE = 25,
 398         H_LIST_HELP        = 26,
 399         H_LIST_ARCHIVE     = 27,
 400         H_LIST_OWNER       = 28,
 401 };
 402
 403 static HeaderEntry hentry_full[] = {{"Date:",           NULL, FALSE},
 404                                    {"From:",            NULL, TRUE},
 405                                    {"To:",              NULL, TRUE},
 406                                    {"Cc:",              NULL, TRUE},
 407                                    {"Newsgroups:",      NULL, TRUE},
 408                                    {"Subject:",         NULL, TRUE},
 409                                    {"Message-ID:",      NULL, FALSE},
 410                                    {"References:",      NULL, FALSE},
 411                                    {"In-Reply-To:",     NULL, FALSE},
 412                                    {"Content-Type:",    NULL, FALSE},
 413                                    {"Seen:",            NULL, FALSE},
 414                                    {"Status:",          NULL, FALSE},
 415                                    {"X-Status:",        NULL, FALSE},
 416                                    {"From ",            NULL, FALSE},
 417                                    {"SC-Marked-For-Download:", NULL, FALSE},
 418                                    {"SC-Message-Size:", NULL, FALSE},
 419                                    {"Face:",            NULL, FALSE},
 420                                    {"X-Face:",          NULL, FALSE},
 421                                    {"Disposition-Notification-To:", NULL, FALSE},
 422                                    {"Return-Receipt-To:", NULL, FALSE},
 423                                    {"SC-Partially-Retrieved:", NULL, FALSE},
 424                                    {"SC-Account-Server:", NULL, FALSE},
 425                                    {"SC-Account-Login:",NULL, FALSE},
 426                                    {"List-Post:",       NULL, TRUE},
 427                                    {"List-Subscribe:",  NULL, TRUE},
 428                                    {"List-Unsubscribe:",NULL, TRUE},
 429                                    {"List-Help:",       NULL, TRUE},
 430                                    {"List-Archive:",    NULL, TRUE},
 431                                    {"List-Owner:",      NULL, TRUE},
 432                                    {NULL,               NULL, FALSE}};
 433
 434 static HeaderEntry hentry_short[] = {{"Date:",          NULL, FALSE},
 435                                     {"From:",           NULL, TRUE},
 436                                     {"To:",             NULL, TRUE},
 437                                     {"Cc:",             NULL, TRUE},
 438                                     {"Newsgroups:",     NULL, TRUE},
 439                                     {"Subject:",        NULL, TRUE},
 440                                     {"Message-ID:",     NULL, FALSE},
 441                                     {"References:",     NULL, FALSE},
 442                                     {"In-Reply-To:",    NULL, FALSE},
 443                                     {"Content-Type:",   NULL, FALSE},
 444                                     {"Seen:",           NULL, FALSE},
 445                                     {"Status:",         NULL, FALSE},
 446                                     {"X-Status:",       NULL, FALSE},
 447                                     {"From ",           NULL, FALSE},
 448                                     {"SC-Marked-For-Download:", NULL, FALSE},
 449                                     {"SC-Message-Size:",NULL, FALSE},
 450                                     {NULL,              NULL, FALSE}};
 451
 452 static HeaderEntry* procheader_get_headernames(gboolean full)
 453 {
 454         return full ? hentry_full : hentry_short;
 455 }
 456
 457 MsgInfo *procheader_parse_stream(FILE *fp, MsgFlags flags, gboolean full,
 458                                  gboolean decrypted)
 459 {
 460         return parse_stream(fp, FALSE, flags, full, decrypted);
 461 }
 462
 463 static MsgInfo *parse_stream(void *data, gboolean isstring, MsgFlags flags,
 464                              gboolean full, gboolean decrypted)
 465 {
 466         MsgInfo *msginfo;
 467         gchar buf[BUFFSIZE];
 468         gchar *p, *tmp;
 469         gchar *hp;
 470         HeaderEntry *hentry;
 471         gint hnum;
 472         void *orig_data = data;
 473
 474         get_one_field_func get_one_field =
 475                 isstring ? (get_one_field_func)string_get_one_field
 476                          : (get_one_field_func)procheader_get_one_field;
 477
 478         hentry = procheader_get_headernames(full);
 479
 480         if (MSG_IS_QUEUED(flags) || MSG_IS_DRAFT(flags)) {
 481                 while (get_one_field(buf, sizeof(buf), data, NULL) != -1) {
 482                         if ((!strncmp(buf, "X-Claws-End-Special-Headers: 1",
 483                                 strlen("X-Claws-End-Special-Headers:"))) ||
 484                             (!strncmp(buf, "X-Sylpheed-End-Special-Headers: 1",
 485                                 strlen("X-Sylpheed-End-Special-Headers:"))))
 486                                 break;
 487                         /* from other mailers */
 488                         if (!strncmp(buf, "Date: ", 6)
 489                         ||  !strncmp(buf, "To: ", 4)
 490                         ||  !strncmp(buf, "From: ", 6)
 491                         ||  !strncmp(buf, "Subject: ", 9)) {
 492                                 if (isstring)
 493                                         data = orig_data;
 494                                 else
 495                                         rewind((FILE *)data);
 496                                 break;
 497                         }
 498                 }
 499         }
 500
 501         msginfo = procmsg_msginfo_new();
 502
 503         if (flags.tmp_flags || flags.perm_flags)
 504                 msginfo->flags = flags;
 505         else
 506                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_NEW | MSG_UNREAD);
 507
 508         msginfo->inreplyto = NULL;
 509
 510         while ((hnum = get_one_field(buf, sizeof(buf), data, hentry))
 511                != -1) {
 512                 hp = buf + strlen(hentry[hnum].name);
 513                 while (*hp == ' ' || *hp == '\t') hp++;
 514
 515                 switch (hnum) {
 516                 case H_DATE:
 517                         if (msginfo->date) break;
 518                         msginfo->date_t =
 519                                 procheader_date_parse(NULL, hp, 0);
 520                         if (g_utf8_validate(hp, -1, NULL)) {
 521                                 msginfo->date = g_strdup(hp);
 522                         } else {
 523                                 gchar *utf = conv_codeset_strdup(
 524                                         hp,
 525                                         conv_get_locale_charset_str_no_utf8(),
 526                                         CS_INTERNAL);
 527                                 if (utf == NULL ||
 528                                     !g_utf8_validate(utf, -1, NULL)) {
 529                                         g_free(utf);
 530                                         utf = g_malloc(strlen(buf)*2+1);
 531                                         conv_localetodisp(utf,
 532                                                 strlen(hp)*2+1, hp);
 533                                 }
 534                                 msginfo->date = utf;
 535                         }
 536                         break;
 537                 case H_FROM:
 538                         if (msginfo->from) break;
 539                         msginfo->from = conv_unmime_header(hp, NULL, TRUE);
 540                         msginfo->fromname = procheader_get_fromname(msginfo->from);
 541                         remove_return(msginfo->from);
 542                         remove_return(msginfo->fromname);
 543                         break;
 544                 case H_TO:
 545                         tmp = conv_unmime_header(hp, NULL, TRUE);
 546                         remove_return(tmp);
 547                         if (msginfo->to) {
 548                                 p = msginfo->to;
 549                                 msginfo->to =
 550                                         g_strconcat(p, ", ", tmp, NULL);
 551                                 g_free(p);
 552                         } else
 553                                 msginfo->to = g_strdup(tmp);
 554                         g_free(tmp);
 555                         break;
 556                 case H_CC:
 557                         tmp = conv_unmime_header(hp, NULL, TRUE);
 558                         remove_return(tmp);
 559                         if (msginfo->cc) {
 560                                 p = msginfo->cc;
 561                                 msginfo->cc =
 562                                         g_strconcat(p, ", ", tmp, NULL);
 563                                 g_free(p);
 564                         } else
 565                                 msginfo->cc = g_strdup(tmp);
 566                         g_free(tmp);
 567                         break;
 568                 case H_NEWSGROUPS:
 569                         if (msginfo->newsgroups) {
 570                                 p = msginfo->newsgroups;
 571                                 msginfo->newsgroups =
 572                                         g_strconcat(p, ",", hp, NULL);
 573                                 g_free(p);
 574                         } else
 575                                 msginfo->newsgroups = g_strdup(hp);
 576                         break;
 577                 case H_SUBJECT:
 578                         if (msginfo->subject) break;
 579                         msginfo->subject = conv_unmime_header(hp, NULL, FALSE);
 580                         unfold_line(msginfo->subject);
 581                        break;
 582                 case H_MSG_ID:
 583                         if (msginfo->msgid) break;
 584
 585                         extract_parenthesis(hp, '<', '>');
 586                         remove_space(hp);
 587                         msginfo->msgid = g_strdup(hp);
 588                         break;
 589                 case H_REFERENCES:
 590                         msginfo->references =
 591                                 references_list_prepend(msginfo->references,
 592                                                         hp);
 593                         break;
 594                 case H_IN_REPLY_TO:
 595                         if (msginfo->inreplyto) break;
 596
 597                         eliminate_parenthesis(hp, '(', ')');
 598                         if ((p = strrchr(hp, '<')) != NULL &&
 599                             strchr(p + 1, '>') != NULL) {
 600                                 extract_parenthesis(p, '<', '>');
 601                                 remove_space(p);
 602                                 if (*p != '\0')
 603                                         msginfo->inreplyto = g_strdup(p);
 604                         }
 605                         break;
 606                 case H_CONTENT_TYPE:
 607                         if (!g_ascii_strncasecmp(hp, "multipart/", 10))
 608                                 MSG_SET_TMP_FLAGS(msginfo->flags, MSG_MULTIPART);
 609                         break;
 610 #ifdef ALLOW_HEADER_HINT
 611                 case H_SEEN:
 612                         /* mnews Seen header */
 613                         MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW|MSG_UNREAD);
 614                         break;
 615 #endif
 616                 case H_FACE:
 617                         if (!msginfo->extradata)
 618                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 619                         if (msginfo->extradata->face) break;
 620                         msginfo->extradata->face = g_strdup(hp);
 621                         break;
 622                 case H_X_FACE:
 623                         if (!msginfo->extradata)
 624                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 625                         if (msginfo->extradata->xface) break;
 626                         msginfo->extradata->xface = g_strdup(hp);
 627                         break;
 628                 case H_DISPOSITION_NOTIFICATION_TO:
 629                         if (!msginfo->extradata)
 630                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 631                         if (msginfo->extradata->dispositionnotificationto) break;
 632                         msginfo->extradata->dispositionnotificationto = g_strdup(hp);
 633                         break;
 634                 case H_RETURN_RECEIPT_TO:
 635                         if (!msginfo->extradata)
 636                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 637                         if (msginfo->extradata->returnreceiptto) break;
 638                         msginfo->extradata->returnreceiptto = g_strdup(hp);
 639                         break;
 640 /* partial download infos */
 641                 case H_SC_PARTIALLY_RETRIEVED:
 642                         if (!msginfo->extradata)
 643                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 644                         if (msginfo->extradata->partial_recv) break;
 645                         msginfo->extradata->partial_recv = g_strdup(hp);
 646                         break;
 647                 case H_SC_ACCOUNT_SERVER:
 648                         if (!msginfo->extradata)
 649                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 650                         if (msginfo->extradata->account_server) break;
 651                         msginfo->extradata->account_server = g_strdup(hp);
 652                         break;
 653                 case H_SC_ACCOUNT_LOGIN:
 654                         if (!msginfo->extradata)
 655                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 656                         if (msginfo->extradata->account_login) break;
 657                         msginfo->extradata->account_login = g_strdup(hp);
 658                         break;
 659                 case H_SC_MESSAGE_SIZE:
 660                         if (msginfo->total_size) break;
 661                         msginfo->total_size = atoi(hp);
 662                         break;
 663                 case H_SC_PLANNED_DOWNLOAD:
 664                         msginfo->planned_download = atoi(hp);
 665                         break;
 666 /* end partial download infos */
 667 #ifdef ALLOW_HEADER_HINT
 668                 case H_STATUS:
 669                         if (strchr(hp, 'R') != NULL)
 670                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 671                         if (strchr(hp, 'O') != NULL)
 672                                 MSG_UNSET_PERM_FLAGS(msginfo->flags, MSG_NEW);
 673                         if (strchr(hp, 'U') != NULL)
 674                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_UNREAD);
 675                         break;
 676                 case H_X_STATUS:
 677                         if (strchr(hp, 'D') != NULL)
 678                                 MSG_SET_PERM_FLAGS(msginfo->flags,
 679                                               MSG_REALLY_DELETED);
 680                         if (strchr(hp, 'F') != NULL)
 681                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_MARKED);
 682                         if (strchr(hp, 'd') != NULL)
 683                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_DELETED);
 684                         if (strchr(hp, 'r') != NULL)
 685                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_REPLIED);
 686                         if (strchr(hp, 'f') != NULL)
 687                                 MSG_SET_PERM_FLAGS(msginfo->flags, MSG_FORWARDED);
 688                         break;
 689 #endif
 690                 case H_FROM_SPACE:
 691                         if (msginfo->fromspace) break;
 692                         msginfo->fromspace = g_strdup(hp);
 693                         remove_return(msginfo->fromspace);
 694                         break;
 695 /* list infos */
 696                 case H_LIST_POST:
 697                         if (!msginfo->extradata)
 698                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 699                         if (msginfo->extradata->list_post) break;
 700                         msginfo->extradata->list_post = g_strdup(hp);
 701                         break;
 702                 case H_LIST_SUBSCRIBE:
 703                         if (!msginfo->extradata)
 704                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 705                         if (msginfo->extradata->list_subscribe) break;
 706                         msginfo->extradata->list_subscribe = g_strdup(hp);
 707                         break;
 708                 case H_LIST_UNSUBSCRIBE:
 709                         if (!msginfo->extradata)
 710                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 711                         if (msginfo->extradata->list_unsubscribe) break;
 712                         msginfo->extradata->list_unsubscribe = g_strdup(hp);
 713                         break;
 714                 case H_LIST_HELP:
 715                         if (!msginfo->extradata)
 716                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 717                         if (msginfo->extradata->list_help) break;
 718                         msginfo->extradata->list_help = g_strdup(hp);
 719                         break;
 720                 case H_LIST_ARCHIVE:
 721                         if (!msginfo->extradata)
 722                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 723                         if (msginfo->extradata->list_archive) break;
 724                         msginfo->extradata->list_archive = g_strdup(hp);
 725                         break;
 726                 case H_LIST_OWNER:
 727                         if (!msginfo->extradata)
 728                                 msginfo->extradata = g_new0(MsgInfoExtraData, 1);
 729                         if (msginfo->extradata->list_owner) break;
 730                         msginfo->extradata->list_owner = g_strdup(hp);
 731                         break;
 732 /* end list infos */
 733                 default:
 734                         break;
 735                 }
 736         }
 737
 738         if (!msginfo->inreplyto && msginfo->references)
 739                 msginfo->inreplyto =
 740                         g_strdup((gchar *)msginfo->references->data);
 741
 742         return msginfo;
 743 }
 744
 745 gchar *procheader_get_fromname(const gchar *str)
 746 {
 747         gchar *tmp, *name;
 748
 749         Xstrdup_a(tmp, str, return NULL);
 750
 751         if (*tmp == '\"') {
 752                 extract_quote(tmp, '\"');
 753                 g_strstrip(tmp);
 754         } else if (strchr(tmp, '<')) {
 755                 eliminate_parenthesis(tmp, '<', '>');
 756                 g_strstrip(tmp);
 757                 if (*tmp == '\0') {
 758                         strcpy(tmp, str);
 759                         extract_parenthesis(tmp, '<', '>');
 760                         g_strstrip(tmp);
 761                 }
 762         } else if (strchr(tmp, '(')) {
 763                 extract_parenthesis(tmp, '(', ')');
 764                 g_strstrip(tmp);
 765         }
 766
 767         if (*tmp == '\0')
 768                 name = g_strdup(str);
 769         else
 770                 name = g_strdup(tmp);
 771
 772         return name;
 773 }
 774
 775 static gint procheader_scan_date_string(const gchar *str,
 776                                         gchar *weekday, gint *day,
 777                                         gchar *month, gint *year,
 778                                         gint *hh, gint *mm, gint *ss,
 779                                         gchar *zone)
 780 {
 781         gint result;
 782         gint month_n;
 783         gchar zone1[3];
 784         gchar zone2[3];
 785
 786         if (str == NULL)
 787                 return -1;
 788
 789         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d %5s",
 790                         weekday, day, month, year, hh, mm, ss, zone);
 791         if (result == 8) return 0;
 792
 793         /* RFC2822 */
 794         result = sscanf(str, "%3s,%d %9s %d %2d:%2d:%2d %5s",
 795                         weekday, day, month, year, hh, mm, ss, zone);
 796         if (result == 8) return 0;
 797
 798         result = sscanf(str, "%d %9s %d %2d:%2d:%2d %5s",
 799                         day, month, year, hh, mm, ss, zone);
 800         if (result == 7) return 0;
 801
 802         *zone = '\0';
 803         result = sscanf(str, "%10s %d %9s %d %2d:%2d:%2d",
 804                         weekday, day, month, year, hh, mm, ss);
 805         if (result == 7) return 0;
 806
 807         result = sscanf(str, "%d %9s %d %2d:%2d:%2d",
 808                         day, month, year, hh, mm, ss);
 809         if (result == 6) return 0;
 810
 811         *ss = 0;
 812         result = sscanf(str, "%10s %d %9s %d %2d:%2d %5s",
 813                         weekday, day, month, year, hh, mm, zone);
 814         if (result == 7) return 0;
 815
 816         result = sscanf(str, "%d %9s %d %2d:%2d %5s",
 817                         day, month, year, hh, mm, zone);
 818         if (result == 6) return 0;
 819
 820         *zone = '\0';
 821         result = sscanf(str, "%10s %d %9s %d %2d:%2d",
 822                         weekday, day, month, year, hh, mm);
 823         if (result == 6) return 0;
 824
 825         result = sscanf(str, "%d %9s %d %2d:%2d",
 826                         day, month, year, hh, mm);
 827         if (result == 5) return 0;
 828
 829         /* RFC3339 subset */
 830         *weekday = '\0';
 831         result = sscanf(str, "%4d-%2d-%2d %2d:%2d:%2d+%2s:%2s",
 832                         year, &month_n, day, hh, mm, ss, zone1, zone2);
 833         if (result == 8) {
 834                 if (1 <= month_n && month_n <= 12) {
 835                         strncpy2(month, monthstr+((month_n-1)*3), 4);
 836                         *zone = '+';
 837                         strncpy2(zone+1, zone1, 3);
 838                         strncpy2(zone+3, zone2, 3);
 839                         return 0;
 840                 }
 841         }
 842
 843         /* RFC3339 subset */
 844         *zone = '\0';
 845         *weekday = '\0';
 846         result = sscanf(str, "%4d-%2d-%2d %2d:%2d:%2d",
 847                         year, &month_n, day, hh, mm, ss);
 848         if (result == 6) {
 849                 if (1 <= month_n && month_n <= 12) {
 850                         strncpy2(month, monthstr+((month_n-1)*3), 4);
 851                         return 0;
 852                 }
 853         }
 854
 855         return -1;
 856 }
 857
 858 /*
 859  * Hiro, most UNIXen support this function:
 860  * http://www.mcsr.olemiss.edu/cgi-bin/man-cgi?getdate
 861  */
 862 gboolean procheader_date_parse_to_tm(const gchar *src, struct tm *t, char *zone)
 863 {
 864         gchar weekday[11];
 865         gint day;
 866         gchar month[10];
 867         gint year;
 868         gint hh, mm, ss;
 869         GDateMonth dmonth;
 870         gchar *p;
 871
 872         if (!t)
 873                 return FALSE;
 874
 875         memset(t, 0, sizeof *t);
 876
 877         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 878                                         &hh, &mm, &ss, zone) < 0) {
 879                 g_warning("Invalid date: %s\n", src);
 880                 return FALSE;
 881         }
 882
 883         /* Y2K compliant :) */
 884         if (year < 100) {
 885                 if (year < 70)
 886                         year += 2000;
 887                 else
 888                         year += 1900;
 889         }
 890
 891         month[3] = '\0';
 892         if ((p = strstr(monthstr, month)) != NULL)
 893                 dmonth = (gint)(p - monthstr) / 3 + 1;
 894         else {
 895                 g_warning("Invalid month: %s\n", month);
 896                 dmonth = G_DATE_BAD_MONTH;
 897         }
 898
 899         t->tm_sec = ss;
 900         t->tm_min = mm;
 901         t->tm_hour = hh;
 902         t->tm_mday = day;
 903         t->tm_mon = dmonth - 1;
 904         t->tm_year = year - 1900;
 905         t->tm_wday = 0;
 906         t->tm_yday = 0;
 907         t->tm_isdst = -1;
 908
 909         mktime(t);
 910
 911         return TRUE;
 912 }
 913
 914 time_t procheader_date_parse(gchar *dest, const gchar *src, gint len)
 915 {
 916         gchar weekday[11];
 917         gint day;
 918         gchar month[10];
 919         gint year;
 920         gint hh, mm, ss;
 921         gchar zone[6];
 922         GDateMonth dmonth = G_DATE_BAD_MONTH;
 923         struct tm t;
 924         gchar *p;
 925         time_t timer;
 926         time_t tz_offset;
 927
 928         if (procheader_scan_date_string(src, weekday, &day, month, &year,
 929                                         &hh, &mm, &ss, zone) < 0) {
 930                 if (dest && len > 0)
 931                         strncpy2(dest, src, len);
 932                 return 0;
 933         }
 934
 935         /* Y2K compliant :) */
 936         if (year < 1000) {
 937                 if (year < 50)
 938                         year += 2000;
 939                 else
 940                         year += 1900;
 941         }
 942
 943         month[3] = '\0';
 944         for (p = monthstr; *p != '\0'; p += 3) {
 945                 if (!g_ascii_strncasecmp(p, month, 3)) {
 946                         dmonth = (gint)(p - monthstr) / 3 + 1;
 947                         break;
 948                 }
 949         }
 950
 951         t.tm_sec = ss;
 952         t.tm_min = mm;
 953         t.tm_hour = hh;
 954         t.tm_mday = day;
 955         t.tm_mon = dmonth - 1;
 956         t.tm_year = year - 1900;
 957         t.tm_wday = 0;
 958         t.tm_yday = 0;
 959         t.tm_isdst = -1;
 960
 961         timer = mktime(&t);
 962         tz_offset = remote_tzoffset_sec(zone);
 963         if (tz_offset != -1)
 964                 timer += tzoffset_sec(&timer) - tz_offset;
 965
 966         if (dest)
 967                 procheader_date_get_localtime(dest, len, timer);
 968
 969         return timer;
 970 }
 971
 972 void procheader_date_get_localtime(gchar *dest, gint len, const time_t timer)
 973 {
 974         struct tm *lt;
 975         gchar *default_format = "%y/%m/%d(%a) %H:%M";
 976         gchar *str;
 977         const gchar *src_codeset, *dest_codeset;
 978         struct tm buf;
 979
 980         if (timer > 0)
 981                 lt = localtime_r(&timer, &buf);
 982         else {
 983                 time_t dummy = 1;
 984                 lt = localtime_r(&dummy, &buf);
 985         }
 986
 987         if (prefs_common.date_format)
 988                 fast_strftime(dest, len, prefs_common.date_format, lt);
 989         else
 990                 fast_strftime(dest, len, default_format, lt);
 991
 992         if (!g_utf8_validate(dest, -1, NULL)) {
 993                 src_codeset = conv_get_locale_charset_str_no_utf8();
 994                 dest_codeset = CS_UTF_8;
 995                 str = conv_codeset_strdup(dest, src_codeset, dest_codeset);
 996                 if (str) {
 997                         strncpy2(dest, str, len);
 998                         g_free(str);
 999                 }
1000         }
1001 }
1002
1003 /* Added by Mel Hadasht on 27 Aug 2001 */
1004 /* Get a header from msginfo */
1005 gint procheader_get_header_from_msginfo(MsgInfo *msginfo, gchar *buf, gint len, gchar *header)
1006 {
1007         gchar *file;
1008         FILE *fp;
1009         HeaderEntry hentry[]={ { NULL, NULL, TRUE  },
1010                                { NULL, NULL, FALSE } };
1011         gint val;
1012
1013         hentry[0].name = header;
1014
1015         cm_return_val_if_fail(msginfo != NULL, -1);
1016         file = procmsg_get_message_file_path(msginfo);
1017         if ((fp = g_fopen(file, "rb")) == NULL) {
1018                FILE_OP_ERROR(file, "fopen");
1019                g_free(file);
1020                return -1;
1021         }
1022         val = procheader_get_one_field(buf,len, fp, hentry);
1023         if (fclose(fp) == EOF) {
1024                 FILE_OP_ERROR(file, "fclose");
1025                 claws_unlink(file);
1026                 g_free(file);
1027                 return -1;
1028         }
1029
1030         g_free(file);
1031         if (val == -1)
1032                 return -1;
1033
1034         return 0;
1035 }
1036
1037 HeaderEntry *procheader_entries_from_str(const gchar *str)
1038 {
1039         HeaderEntry *entries = NULL, *he;
1040         int numh = 0, i = 0;
1041         gchar **names = NULL;
1042         const gchar *s = str;
1043
1044         if (s == NULL) {
1045                 return NULL;
1046         }
1047         while (*s != '\0') {
1048                 if (*s == ' ') ++numh;
1049                 ++s;
1050         }
1051         if (numh == 0) {
1052                 return NULL;
1053         }
1054         entries = g_new0(HeaderEntry, numh + 1); /* room for last NULL */
1055         s = str;
1056         ++s; /* skip first space */
1057         names = g_strsplit(s, " ", numh);
1058         he = entries;
1059         while (names[i]) {
1060                 he->name = g_strdup_printf("%s:", names[i]);
1061                 he->body = NULL;
1062                 he->unfold = FALSE;
1063                 ++i, ++he;
1064         }
1065         he->name = NULL;
1066         g_strfreev(names);
1067         return entries;
1068 }
1069
1070 void procheader_entries_free (HeaderEntry *entries)
1071 {
1072         if (entries != NULL) {
1073                 HeaderEntry *he = entries;
1074                 while (he->name != NULL) {
1075                         g_free(he->name);
1076                         if (he->body != NULL)
1077                                 g_free(he->body);
1078                         ++he;
1079                 }
1080                 g_free(entries);
1081         }
1082 }
1083