src/plugins/vcalendar/vcal_manager.c

   1 /*
   2  * Claws Mail -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2007 Colin Leroy <colin@colino.net> and
   4  * the Claws Mail team
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #ifdef HAVE_CONFIG_H
  22 #  include "config.h"
  23 #include "claws-features.h"
  24 #endif
  25
  26 #include <stddef.h>
  27 #include <glib.h>
  28 #include <glib/gi18n.h>
  29
  30 #include <sys/types.h>
  31 #include <sys/stat.h>
  32 #ifdef USE_PTHREAD
  33 #include <pthread.h>
  34 #endif
  35 #include <libical/ical.h>
  36 #include "vcalendar.h"
  37 #include "vcal_folder.h"
  38 #include "vcal_manager.h"
  39 #include "vcal_meeting_gtk.h"
  40 #include "vcal_prefs.h"
  41 #include "xml.h"
  42 #include "xmlprops.h"
  43 #include "prefs.h"
  44 #include "prefs_common.h"
  45 #include "prefs_account.h"
  46 #include "alertpanel.h"
  47 #include "account.h"
  48 #include "codeconv.h"
  49 #include <time.h>
  50 #include "folder.h"
  51 #include "quoted-printable.h"
  52 #include "utils.h"
  53 #include "defs.h"
  54
  55 #ifdef G_OS_WIN32
  56 #define getuid() 0
  57 #endif
  58
  59 Answer *answer_new(const gchar *attendee,
  60                           const gchar *name,
  61                           icalparameter_partstat ans,
  62                           icalparameter_cutype cutype)
  63 {
  64         Answer *answer = g_new0(Answer, 1);
  65         answer->attendee = g_strdup(attendee);
  66         answer->name = g_strdup(name);
  67         if (!answer->name)
  68                 answer->name = g_strdup("");
  69         if (!answer->attendee)
  70                 answer->attendee = g_strdup("");
  71         answer->answer = ans;
  72         answer->cutype = cutype;
  73         return answer;
  74 }
  75
  76 static void answer_free(Answer *answer)
  77 {
  78         g_free(answer->attendee);
  79         g_free(answer->name);
  80         g_free(answer);
  81 }
  82
  83 static GSList *answer_find(VCalEvent *event, Answer *answer)
  84 {
  85         GSList *cur = event->answers;
  86         while (cur && cur->data) {
  87                 Answer *b = (Answer *)cur->data;
  88                 if (!strcasecmp(b->attendee, answer->attendee))
  89                         return cur;
  90                 cur = cur->next;
  91         }
  92         return NULL;
  93 }
  94
  95 void vcal_manager_copy_attendees(VCalEvent *src, VCalEvent *dest)
  96 {
  97         GSList *cur = src->answers;
  98         while (cur && cur->data) {
  99                 Answer *a = (Answer *)cur->data;
 100                 Answer *b = answer_new(a->attendee, a->name, a->answer, a->cutype);
 101                 dest->answers = g_slist_prepend(dest->answers, b);
 102                 cur = cur->next;
 103         }
 104         dest->answers = g_slist_reverse(dest->answers);
 105 }
 106
 107 gchar *vcal_manager_answer_get_text(icalparameter_partstat ans)
 108 {
 109         static gchar *replies[5]={
 110                 N_("accepted"),
 111                 N_("tentatively accepted"),
 112                 N_("declined"),
 113                 N_("did not answer"),
 114                 N_("unknown")
 115         };
 116
 117         switch (ans) {
 118         case ICAL_PARTSTAT_ACCEPTED:
 119                 return _(replies[0]);
 120                 break;
 121         case ICAL_PARTSTAT_DECLINED:
 122                 return _(replies[2]);
 123                 break;
 124         case ICAL_PARTSTAT_TENTATIVE:
 125                 return _(replies[1]);
 126                 break;
 127         case ICAL_PARTSTAT_NEEDSACTION:
 128                 return _(replies[3]);
 129         case ICAL_PARTSTAT_DELEGATED:
 130         case ICAL_PARTSTAT_COMPLETED:
 131         case ICAL_PARTSTAT_X:
 132         case ICAL_PARTSTAT_INPROCESS:
 133         case ICAL_PARTSTAT_NONE:
 134   case ICAL_PARTSTAT_FAILED:
 135                 return _(replies[4]);
 136                 break;
 137         }
 138         return NULL;
 139 }
 140
 141 gchar *vcal_manager_cutype_get_text(icalparameter_cutype type)
 142 {
 143         static gchar *replies[5]={
 144                 N_("individual"),
 145                 N_("group"),
 146                 N_("resource"),
 147                 N_("room"),
 148                 N_("unknown")
 149         };
 150
 151         switch (type) {
 152         case ICAL_CUTYPE_INDIVIDUAL:
 153                 return _(replies[0]);
 154                 break;
 155         case ICAL_CUTYPE_GROUP:
 156                 return _(replies[1]);
 157                 break;
 158         case ICAL_CUTYPE_RESOURCE:
 159                 return _(replies[2]);
 160                 break;
 161         case ICAL_CUTYPE_ROOM:
 162                 return _(replies[3]);
 163         default:
 164                 return _(replies[4]);
 165                 break;
 166         }
 167         return NULL;
 168 }
 169
 170 static GSList *answer_remove(VCalEvent *event, Answer *answer)
 171 {
 172         GSList *cur = answer_find(event, answer);
 173         if (cur) {
 174                 Answer *b = (Answer *)cur->data;
 175                 event->answers = g_slist_remove(event->answers, b);
 176                 answer_free(b);
 177         }
 178         return event->answers;
 179 }
 180
 181 static GSList *answer_add(VCalEvent *event, Answer *answer)
 182 {
 183         event->answers = g_slist_append(event->answers, answer);
 184         return event->answers;
 185 }
 186
 187 GSList *vcal_manager_get_answers_emails(VCalEvent *event)
 188 {
 189         GSList *new = NULL;
 190         GSList *cur = event->answers;
 191         while (cur && cur->data) {
 192                 Answer *b = (Answer *)cur->data;
 193                 new = g_slist_prepend(new, b->attendee);
 194                 cur = cur->next;
 195         }
 196         new = g_slist_reverse(new);
 197         return new;
 198 }
 199
 200 icalparameter_partstat vcal_manager_get_reply_for_attendee(VCalEvent *event, const gchar *att)
 201 {
 202         Answer *a = answer_new(att, NULL, 0, 0);
 203         GSList *ans = answer_find(event, a);
 204         icalparameter_partstat res = 0;
 205         if (ans) {
 206                 Answer *b = (Answer *)ans->data;
 207                 res = b->answer;
 208         }
 209         answer_free(a);
 210         return res;
 211 }
 212
 213 gchar *vcal_manager_get_cutype_text_for_attendee(VCalEvent *event, const gchar *att)
 214 {
 215         icalparameter_cutype status = vcal_manager_get_cutype_for_attendee(event, att);
 216         gchar *res = NULL;
 217         if (status != 0)
 218                 res = g_strdup(vcal_manager_cutype_get_text(status));
 219
 220         return res;
 221 }
 222
 223 icalparameter_partstat vcal_manager_get_cutype_for_attendee(VCalEvent *event, const gchar *att)
 224 {
 225         Answer *a = answer_new(att, NULL, 0, 0);
 226         GSList *ans = answer_find(event, a);
 227         icalparameter_cutype res = 0;
 228         if (ans) {
 229                 Answer *b = (Answer *)ans->data;
 230                 res = b->cutype;
 231         }
 232         answer_free(a);
 233         return res;
 234 }
 235
 236 gchar *vcal_manager_get_reply_text_for_attendee(VCalEvent *event, const gchar *att)
 237 {
 238         icalparameter_partstat status = vcal_manager_get_reply_for_attendee(event, att);
 239         gchar *res = NULL;
 240         if (status != 0)
 241                 res = g_strdup(vcal_manager_answer_get_text(status));
 242
 243         return res;
 244 }
 245
 246 gchar *vcal_manager_get_attendee_name(VCalEvent *event, const gchar *att)
 247 {
 248         Answer *a = answer_new(att, NULL, 0, 0);
 249         GSList *ans = answer_find(event, a);
 250         gchar *res = NULL;
 251         if (ans) {
 252                 Answer *b = (Answer *)ans->data;
 253                 if (b->name)
 254                         res = g_strdup(b->name);
 255         }
 256         answer_free(a);
 257         return res;
 258 }
 259
 260 void vcal_manager_event_print(VCalEvent *event)
 261 {
 262         GSList *list = event->answers;
 263         printf( "event->uid\t\t%s\n"
 264                 "event->organizer\t\t%s\n"
 265                 "event->start\t\t%s\n"
 266                 "event->end\t\t%s\n"
 267                 "event->location\t\t%s\n"
 268                 "event->summary\t\t%s\n"
 269                 "event->description\t%s\n"
 270                 "event->url\t%s\n"
 271                 "event->dtstart\t\t%s\n"
 272                 "event->dtend\t\t%s\n"
 273                 "event->recur\t\t%s\n"
 274                 "event->tzid\t\t%s\n"
 275                 "event->method\t\t%d\n"
 276                 "event->sequence\t\t%d\n",
 277                 event->uid,
 278                 event->organizer,
 279                 event->start,
 280                 event->end,
 281                 event->location,
 282                 event->summary,
 283                 event->description,
 284                 event->url,
 285                 event->dtstart,
 286                 event->dtend,
 287                 event->recur,
 288                 event->tzid,
 289                 event->method,
 290                 event->sequence);
 291         while (list && list->data) {
 292                 Answer *a = (Answer *)list->data;
 293                 printf(" ans: %s %s, %s\n", a->name, a->attendee, vcal_manager_answer_get_text(a->answer));
 294                 list = list->next;
 295         }
 296
 297 }
 298
 299 static gchar *write_headers(PrefsAccount        *account,
 300                             VCalEvent           *event,
 301                             gboolean             short_headers,
 302                             gboolean             is_reply,
 303                             gboolean             is_pseudo_event);
 304
 305 gchar *vcal_manager_event_dump(VCalEvent *event, gboolean is_reply, gboolean is_pseudo_event,
 306                                 icalcomponent *use_calendar, gboolean modif)
 307 {
 308         gchar *organizer = g_strdup_printf("MAILTO:%s", event->organizer);
 309         PrefsAccount *account = vcal_manager_get_account_from_event(event);
 310         gchar *attendee  = NULL;
 311         gchar *body, *headers;
 312         gchar *tmpfile = NULL;
 313         icalcomponent *calendar, *ievent, *timezone, *tzc;
 314         icalproperty *attprop;
 315         icalproperty *orgprop;
 316         icalparameter_partstat status = ICAL_PARTSTAT_NEEDSACTION;
 317         gchar *sanitized_uid = g_strdup(event->uid);
 318
 319         subst_for_filename(sanitized_uid);
 320
 321         tmpfile = g_strdup_printf("%s%cevt-%d-%s", get_tmp_dir(),
 322                                       G_DIR_SEPARATOR, getuid(), sanitized_uid);
 323         g_free(sanitized_uid);
 324
 325         if (!account) {
 326                 g_free(organizer);
 327                 g_free(tmpfile);
 328                 debug_print("no account found\n");
 329                 return NULL;
 330         }
 331
 332         attendee = g_strdup_printf("MAILTO:%s", account->address);
 333
 334         if (vcal_manager_get_reply_for_attendee(event, account->address) != 0)
 335                 status = vcal_manager_get_reply_for_attendee(event, account->address);
 336
 337         tzset();
 338
 339         if (use_calendar != NULL) {
 340                 calendar = use_calendar;
 341                 g_free(tmpfile);
 342                 tmpfile = NULL;
 343         } else
 344                 calendar =
 345                         icalcomponent_vanew(
 346                             ICAL_VCALENDAR_COMPONENT,
 347                             icalproperty_new_version("2.0"),
 348                             icalproperty_new_prodid(
 349                                  "-//Claws Mail//NONSGML Claws Mail Calendar//EN"),
 350                             icalproperty_new_calscale("GREGORIAN"),
 351                             icalproperty_new_method(is_reply ? ICAL_METHOD_REPLY:event->method),
 352                             (void*)0
 353                             );
 354
 355         if (!calendar) {
 356                 g_warning ("can't generate calendar");
 357                 g_free(organizer);
 358                 g_free(tmpfile);
 359                 g_free(attendee);
 360                 return NULL;
 361         }
 362
 363         orgprop = icalproperty_new_organizer(organizer);
 364
 365         timezone = icalcomponent_new(ICAL_VTIMEZONE_COMPONENT);
 366
 367         icalcomponent_add_property(timezone,
 368                 icalproperty_new_tzid("UTC")); /* free */
 369
 370         tzc = icalcomponent_new(ICAL_XSTANDARD_COMPONENT);
 371         icalcomponent_add_property(tzc,
 372                 icalproperty_new_dtstart(
 373                         icaltime_from_string("19700101T000000")));
 374         icalcomponent_add_property(tzc,
 375                 icalproperty_new_tzoffsetfrom(0.0));
 376         icalcomponent_add_property(tzc,
 377                 icalproperty_new_tzoffsetto(0.0));
 378         icalcomponent_add_property(tzc,
 379                 icalproperty_new_tzname("Greenwich meridian time"));
 380
 381         icalcomponent_add_component(timezone, tzc);
 382
 383         ievent =
 384             icalcomponent_vanew(
 385                 ICAL_VEVENT_COMPONENT, (void*)0);
 386
 387         if (!ievent) {
 388                 g_warning ("can't generate event");
 389                 g_free(organizer);
 390                 g_free(tmpfile);
 391                 g_free(attendee);
 392                 return NULL;
 393         }
 394
 395         icalcomponent_add_property(ievent,
 396                 icalproperty_new_uid(event->uid));
 397         icalcomponent_add_property(ievent,
 398                 icalproperty_vanew_dtstamp(icaltime_from_timet(time(NULL), TRUE), (void*)0));
 399         icalcomponent_add_property(ievent,
 400                 icalproperty_vanew_dtstart((icaltime_from_string(event->dtstart)), (void*)0));
 401         icalcomponent_add_property(ievent,
 402                 icalproperty_vanew_dtend((icaltime_from_string(event->dtend)), (void*)0));
 403         if (event->recur && *(event->recur)) {
 404                 icalcomponent_add_property(ievent,
 405                         icalproperty_vanew_rrule((icalrecurrencetype_from_string(event->recur)), (void*)0));
 406         }
 407         icalcomponent_add_property(ievent,
 408                 icalproperty_new_description(event->description));
 409         icalcomponent_add_property(ievent,
 410                 icalproperty_new_summary(event->summary));
 411         icalcomponent_add_property(ievent,
 412                 icalproperty_new_sequence(modif && !is_reply ? event->sequence + 1 : event->sequence));
 413         icalcomponent_add_property(ievent,
 414                 icalproperty_new_class(ICAL_CLASS_PUBLIC));
 415         icalcomponent_add_property(ievent,
 416                 icalproperty_new_transp(ICAL_TRANSP_OPAQUE));
 417         if (event->location && *event->location)
 418                 icalcomponent_add_property(ievent,
 419                         icalproperty_new_location(event->location));
 420         else
 421                 icalcomponent_add_property(ievent,
 422                         icalproperty_new_location(""));
 423         icalcomponent_add_property(ievent,
 424                 icalproperty_new_status(ICAL_STATUS_CONFIRMED));
 425         icalcomponent_add_property(ievent,
 426                 icalproperty_vanew_created(icaltime_from_timet(time(NULL), TRUE), (void*)0));
 427         icalcomponent_add_property(ievent,
 428                 icalproperty_vanew_lastmodified(icaltime_from_timet(time(NULL), TRUE), (void*)0));
 429         icalcomponent_add_property(ievent,
 430                 orgprop);
 431
 432         if (!icalcomponent_get_first_component(calendar, ICAL_VTIMEZONE_COMPONENT))
 433                 icalcomponent_add_component(calendar, timezone);
 434         else
 435                 icalcomponent_free(timezone);
 436
 437         icalcomponent_add_component(calendar, ievent);
 438
 439         if (event->url && *(event->url)) {
 440                 attprop = icalproperty_new_url(event->url);
 441                 icalcomponent_add_property(ievent, attprop);
 442         }
 443
 444         if (is_reply) {
 445                 /* dump only this attendee */
 446                 attprop =
 447                         icalproperty_vanew_attendee(
 448                             attendee,
 449                             icalparameter_new_role(
 450                                 ICAL_ROLE_REQPARTICIPANT),
 451                             icalparameter_new_rsvp(ICAL_RSVP_TRUE),
 452                             icalparameter_new_partstat(status),
 453                             (void*)0
 454                             );
 455                 icalcomponent_add_property(ievent, attprop);
 456         } else {
 457                 /* dump all attendees */
 458                 GSList *cur = event->answers;
 459                 while (cur && cur->data) {
 460                         Answer *a = (Answer *)cur->data;
 461
 462                         if (a->cutype == 0)
 463                                 a->cutype = ICAL_CUTYPE_INDIVIDUAL;
 464                         if (a->answer == 0)
 465                                 a->answer = ICAL_PARTSTAT_NEEDSACTION;
 466
 467                         attprop =
 468                                 icalproperty_vanew_attendee(
 469                                     a->attendee,
 470                                     icalparameter_new_role(
 471                                         ICAL_ROLE_REQPARTICIPANT),
 472                                     icalparameter_new_rsvp(ICAL_RSVP_TRUE),
 473                                     icalparameter_new_cutype(a->cutype),
 474                                     icalparameter_new_partstat(a->answer),
 475                                     (void*)0
 476                                     );
 477
 478                         icalcomponent_add_property(ievent, attprop);
 479                         cur = cur->next;
 480                 }
 481         }
 482
 483         if (use_calendar) {
 484                 g_free(organizer);
 485                 g_free(tmpfile);
 486                 g_free(attendee);
 487                 return NULL;
 488         }
 489
 490         headers = write_headers(account, event, is_pseudo_event, is_reply, is_pseudo_event);
 491
 492         if (!headers) {
 493                 g_warning("can't get headers");
 494                 g_free(organizer);
 495                 g_free(tmpfile);
 496                 g_free(attendee);
 497                 return NULL;
 498         }
 499
 500         body = g_strdup_printf("%s"
 501                                "\n"
 502                                "%s", headers, icalcomponent_as_ical_string(calendar));
 503
 504         if (str_write_to_file(body, tmpfile) < 0) {
 505                 g_free(tmpfile);
 506                 tmpfile = NULL;
 507         }
 508
 509         chmod(tmpfile, S_IRUSR|S_IWUSR);
 510
 511         g_free(body);
 512         g_free(headers);
 513         icalcomponent_free(calendar);
 514         g_free(attendee);
 515         g_free(organizer);
 516
 517         tzset();
 518
 519         return tmpfile;
 520 }
 521
 522 static void get_rfc822_date_from_time_t(gchar *buf, gint len, time_t t)
 523 {
 524 #ifndef G_OS_WIN32
 525         struct tm *lt;
 526         gchar day[4], mon[4];
 527         gint dd, hh, mm, ss, yyyy;
 528         gchar buft1[512];
 529         struct tm buft2;
 530
 531         lt = localtime_r(&t, &buft2);
 532         sscanf(asctime_r(lt, buft1), "%3s %3s %d %d:%d:%d %d\n",
 533                day, mon, &dd, &hh, &mm, &ss, &yyyy);
 534         g_snprintf(buf, len, "%s, %d %s %d %02d:%02d:%02d %s",
 535                    day, dd, mon, yyyy, hh, mm, ss, tzoffset(&t));
 536 #else
 537         GDateTime *dt = g_date_time_new_from_unix_local(t);
 538         gchar *buf2 = g_date_time_format(dt, "%a, %e %b %Y %H:%M:%S %z");
 539         g_date_time_unref(dt);
 540         strncpy(buf, buf2, len);
 541         g_free(buf2);
 542 #endif
 543 }
 544
 545 static gchar *write_headers_date(const gchar *uid)
 546 {
 547         gchar subject[512];
 548         gchar *t_subject;
 549         gchar date[RFC822_DATE_BUFFSIZE];
 550         time_t t;
 551         struct tm lt;
 552
 553         memset(subject, 0, sizeof(subject));
 554         memset(date, 0, sizeof(date));
 555
 556         if (!strcmp(uid, EVENT_PAST_ID)) {
 557                 t = 1;
 558                 t_subject = _("Past");
 559         } else if (!strcmp(uid, EVENT_TODAY_ID)) {
 560                 t = time(NULL);
 561                 t_subject = _("Today");
 562         }  else if (!strcmp(uid, EVENT_TOMORROW_ID)) {
 563                 t = time(NULL) + 86400;
 564                 t_subject = _("Tomorrow");
 565         }  else if (!strcmp(uid, EVENT_THISWEEK_ID)) {
 566                 t = time(NULL) + (86400*2);
 567                 t_subject = _("This week");
 568         }  else if (!strcmp(uid, EVENT_LATER_ID)) {
 569                 t = time(NULL) + (86400*7);
 570                 t_subject = _("Later");
 571         }  else {
 572                 g_warning("unknown spec date");
 573                 return NULL;
 574         }
 575
 576 #ifndef G_OS_WIN32
 577         struct tm buft;
 578         lt = *localtime_r(&t, &buft);
 579 #else
 580         if (t < 0)
 581                 t = 1;
 582         lt = *localtime(&t);
 583 #endif
 584         lt.tm_hour = lt.tm_min = lt.tm_sec = 0;
 585         t = mktime(&lt);
 586         get_rfc822_date_from_time_t(date, sizeof(date), t);
 587         conv_encode_header(subject, 511, t_subject, strlen("Subject: "), FALSE);
 588
 589         return g_strdup_printf("From: -\n"
 590                                 "To: -\n"
 591                                 "Subject: %s\n"
 592                                 "Date: %s\n"
 593                                 "MIME-Version: 1.0\n"
 594                                 "Content-Type: text/plain; charset=\"UTF-8\";\n"
 595                                 "Content-Transfer-Encoding: quoted-printable\n"
 596                                 "Message-ID: <%s>\n",
 597                                 subject,
 598                                 date,
 599                                 uid);
 600 }
 601
 602 gchar *vcal_manager_dateevent_dump(const gchar *uid, FolderItem *item)
 603 {
 604         gchar *sanitized_uid = NULL;
 605         gchar *headers = NULL;
 606         gchar *lines, *body, *tmpfile;
 607         EventTime date;
 608         sanitized_uid = g_strdup(uid);
 609         subst_for_filename(sanitized_uid);
 610
 611         tmpfile = g_strdup_printf("%s%cevt-%d-%s", get_tmp_dir(),
 612                                    G_DIR_SEPARATOR, getuid(), sanitized_uid);
 613         g_free(sanitized_uid);
 614
 615         headers = write_headers_date(uid);
 616
 617         if (!headers) {
 618                 g_warning("can't get headers");
 619                 g_free(tmpfile);
 620                 return NULL;
 621         }
 622
 623         if (!strcmp(uid, EVENT_PAST_ID))
 624                 date = EVENT_PAST;
 625         else if (!strcmp(uid, EVENT_TODAY_ID))
 626                 date = EVENT_TODAY;
 627         else if (!strcmp(uid, EVENT_TOMORROW_ID))
 628                 date = EVENT_TOMORROW;
 629         else if (!strcmp(uid, EVENT_THISWEEK_ID))
 630                 date = EVENT_THISWEEK;
 631         else if (!strcmp(uid, EVENT_LATER_ID))
 632                 date = EVENT_LATER;
 633         else
 634                 date = EVENT_PAST;
 635
 636         lines = get_item_event_list_for_date(item, date);
 637         body = g_strdup_printf("%s"
 638                                "\n"
 639                                "%s", headers, lines);
 640         g_free(lines);
 641         if (str_write_to_file(body, tmpfile) < 0) {
 642                 g_free(tmpfile);
 643                 tmpfile = NULL;
 644         } else
 645                 chmod(tmpfile, S_IRUSR|S_IWUSR);
 646
 647         g_free(body);
 648         g_free(headers);
 649
 650         return tmpfile;
 651 }
 652
 653 static gchar *write_headers_ical(PrefsAccount   *account,
 654                             icalcomponent       *ievent,
 655                             gchar               *orga);
 656
 657 gchar *vcal_manager_icalevent_dump(icalcomponent *event, gchar *orga, icalcomponent *use_calendar)
 658 {
 659         PrefsAccount *account = account_get_cur_account();
 660         gchar *body, *headers, *qpbody;
 661         gchar **lines = NULL;
 662         gchar *tmpfile = NULL;
 663         icalcomponent *calendar;
 664         icalproperty *prop;
 665         icalcomponent *ievent = NULL;
 666         int i = 0;
 667
 668         ievent = icalcomponent_new_clone(event);
 669
 670         prop = icalcomponent_get_first_property(ievent, ICAL_UID_PROPERTY);
 671         if (prop) {
 672                 gchar *sanitized_uid = g_strdup(icalproperty_get_uid(prop));
 673
 674                 subst_for_filename(sanitized_uid);
 675
 676                 tmpfile = g_strdup_printf("%s%cevt-%d-%s", get_tmp_dir(),
 677                                               G_DIR_SEPARATOR, getuid(), sanitized_uid);
 678                 g_free(sanitized_uid);
 679                 icalproperty_free(prop);
 680         } else {
 681                 tmpfile = g_strdup_printf("%s%cevt-%d-%p", get_tmp_dir(),
 682                                       G_DIR_SEPARATOR, getuid(), ievent);
 683         }
 684
 685         if (!account) {
 686                 g_free(tmpfile);
 687                 icalcomponent_free(ievent);
 688                 return NULL;
 689         }
 690
 691         tzset();
 692
 693         if (use_calendar != NULL) {
 694                 calendar = use_calendar;
 695                 g_free(tmpfile);
 696                 tmpfile = NULL;
 697         } else
 698                 calendar =
 699                         icalcomponent_vanew(
 700                             ICAL_VCALENDAR_COMPONENT,
 701                             icalproperty_new_version("2.0"),
 702                             icalproperty_new_prodid(
 703                                  "-//Claws Mail//NONSGML Claws Mail Calendar//EN"),
 704                             icalproperty_new_calscale("GREGORIAN"),
 705                             icalproperty_new_method(ICAL_METHOD_PUBLISH),
 706                             (void*)0
 707                             );
 708
 709         if (!calendar) {
 710                 g_warning ("can't generate calendar");
 711                 g_free(tmpfile);
 712                 icalcomponent_free(ievent);
 713                 return NULL;
 714         }
 715
 716         icalcomponent_add_component(calendar, ievent);
 717
 718         if (use_calendar)
 719                 return NULL;
 720
 721         headers = write_headers_ical(account, ievent, orga);
 722
 723         if (!headers) {
 724                 g_warning("can't get headers");
 725                 g_free(tmpfile);
 726                 icalcomponent_free(calendar);
 727                 return NULL;
 728         }
 729
 730         lines = g_strsplit(icalcomponent_as_ical_string(calendar), "\n", 0);
 731         qpbody = g_strdup("");
 732
 733         /* encode to quoted-printable */
 734         while (lines[i]) {
 735                 gint e_len = strlen(qpbody), n_len = 0;
 736                 gchar *outline = conv_codeset_strdup(lines[i], CS_UTF_8, conv_get_outgoing_charset_str());
 737                 gchar *qpoutline = g_malloc(strlen(outline)*8 + 1);
 738
 739                 qp_encode_line(qpoutline, (guchar *)outline);
 740                 n_len = strlen(qpoutline);
 741
 742                 qpbody = g_realloc(qpbody, e_len + n_len + 1);
 743                 strcpy(qpbody+e_len, qpoutline);
 744                 *(qpbody+n_len+e_len) = '\0';
 745
 746                 g_free(outline);
 747                 g_free(qpoutline);
 748                 i++;
 749         }
 750
 751         body = g_strdup_printf("%s"
 752                                "\n"
 753                                "%s", headers, qpbody);
 754
 755         if (str_write_to_file(body, tmpfile) < 0) {
 756                 g_free(tmpfile);
 757                 tmpfile = NULL;
 758         } else
 759                 chmod(tmpfile, S_IRUSR|S_IWUSR);
 760
 761         g_strfreev(lines);
 762         g_free(body);
 763         g_free(qpbody);
 764         g_free(headers);
 765         icalcomponent_free(calendar);
 766
 767         return tmpfile;
 768 }
 769
 770 VCalEvent * vcal_manager_new_event      (const gchar    *uid,
 771                                          const gchar    *organizer,
 772                                          const gchar    *orgname,
 773                                          const gchar    *location,
 774                                          const gchar    *summary,
 775                                          const gchar    *description,
 776                                          const gchar    *dtstart,
 777                                          const gchar    *dtend,
 778                                          const gchar    *recur,
 779                                          const gchar    *tzid,
 780                                          const gchar    *url,
 781                                          icalproperty_method method,
 782                                          gint            sequence,
 783                                          icalcomponent_kind type)
 784 {
 785         VCalEvent *event = g_new0(VCalEvent, 1);
 786
 787         event->uid              = g_strdup(uid?uid:"");
 788         event->organizer        = g_strdup(organizer?organizer:"");
 789         event->orgname          = g_strdup(orgname?orgname:"");
 790
 791         if (dtend && *(dtend)) {
 792                 time_t tmp = icaltime_as_timet((icaltime_from_string(dtend)));
 793 #ifdef G_OS_WIN32
 794                 GDateTime *dt = g_date_time_new_from_unix_local(tmp);
 795                 event->end = g_date_time_format(dt, "%a, %e %b %Y %H:%M:%S %z");
 796                 g_date_time_unref(dt);
 797 #else
 798                 gchar buft[512];
 799                 tzset();
 800                 event->end      = g_strdup(ctime_r(&tmp, buft));
 801 #endif
 802         }
 803
 804         if (dtstart && *(dtstart)) {
 805                 time_t tmp = icaltime_as_timet((icaltime_from_string(dtstart)));
 806 #ifdef G_OS_WIN32
 807                 GDateTime *dt = g_date_time_new_from_unix_local(tmp);
 808                 event->start = g_date_time_format(dt, "%a, %e %b %Y %H:%M:%S %z");
 809                 g_date_time_unref(dt);
 810 #else
 811                 gchar buft[512];
 812                 tzset();
 813                 event->start    = g_strdup(ctime_r(&tmp, buft));
 814 #endif
 815         }
 816         event->dtstart          = g_strdup(dtstart?dtstart:"");
 817         event->dtend            = g_strdup(dtend?dtend:"");
 818         event->recur            = g_strdup(recur?recur:"");
 819         event->location         = g_strdup(location?location:"");
 820         event->summary          = g_strdup(summary?summary:"");
 821         event->description      = g_strdup(description?description:"");
 822         event->url              = g_strdup(url?url:"");
 823         event->tzid             = g_strdup(tzid?tzid:"");
 824         event->method           = method;
 825         event->sequence         = sequence;
 826         event->type             = type;
 827         event->rec_occurrence           = FALSE;
 828         while (strchr(event->summary, '\n'))
 829                 *(strchr(event->summary, '\n')) = ' ';
 830
 831         return event;
 832 }
 833
 834 void vcal_manager_free_event (VCalEvent *event)
 835 {
 836         GSList *cur;
 837         if (!event)
 838                 return;
 839
 840         g_free(event->uid);
 841         g_free(event->organizer);
 842         g_free(event->orgname);
 843         g_free(event->start);
 844         g_free(event->end);
 845         g_free(event->location);
 846         g_free(event->summary);
 847         g_free(event->dtstart);
 848         g_free(event->dtend);
 849         g_free(event->recur);
 850         g_free(event->tzid);
 851         g_free(event->description);
 852         g_free(event->url);
 853         for (cur = event->answers; cur; cur = cur->next) {
 854                 answer_free((Answer *)cur->data);
 855         }
 856         g_slist_free(event->answers);
 857         g_free(event);
 858 }
 859
 860 gchar *vcal_manager_get_event_path(void)
 861 {
 862         static gchar *event_path = NULL;
 863         if (!event_path)
 864                 event_path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
 865                                         "vcalendar", NULL);
 866
 867         return event_path;
 868 }
 869
 870 gchar *vcal_manager_get_event_file(const gchar *uid)
 871 {
 872         gchar *tmp = g_strdup(uid);
 873         gchar *res = NULL;
 874
 875         subst_for_filename(tmp);
 876         res = g_strconcat(vcal_manager_get_event_path(), G_DIR_SEPARATOR_S,
 877                            tmp, NULL);
 878         g_free(tmp);
 879         return res;
 880 }
 881
 882 PrefsAccount *vcal_manager_get_account_from_event(VCalEvent *event)
 883 {
 884         GSList *list = vcal_manager_get_answers_emails(event);
 885         GSList *cur = list;
 886
 887         /* find an attendee corresponding to one of our accounts */
 888         while (cur && cur->data) {
 889                 gchar *email = (gchar *)cur->data;
 890                 if (account_find_from_address(email, FALSE)) {
 891                         g_slist_free(list);
 892                         return account_find_from_address(email, FALSE);
 893                 }
 894                 cur = cur->next;
 895         }
 896         g_slist_free(list);
 897         return NULL;
 898 }
 899
 900 void vcal_manager_save_event (VCalEvent *event, gboolean export_after)
 901 {
 902         XMLTag *tag = NULL;
 903         XMLNode *xmlnode = NULL;
 904         GNode *rootnode = NULL;
 905         PrefFile *pfile;
 906         gchar *path = NULL;
 907         GSList *answers = event->answers;
 908         gchar *tmp = NULL;
 909         gint tmp_method = event->method;
 910
 911         tag = xml_tag_new("event");
 912         xml_tag_add_attr(tag, xml_attr_new("organizer", event->organizer));
 913         xml_tag_add_attr(tag, xml_attr_new("orgname", event->orgname));
 914         xml_tag_add_attr(tag, xml_attr_new("location", event->location));
 915         xml_tag_add_attr(tag, xml_attr_new("summary", event->summary));
 916         xml_tag_add_attr(tag, xml_attr_new("description", event->description));
 917         xml_tag_add_attr(tag, xml_attr_new("url", event->url));
 918         xml_tag_add_attr(tag, xml_attr_new("dtstart", event->dtstart));
 919         xml_tag_add_attr(tag, xml_attr_new("dtend", event->dtend));
 920         xml_tag_add_attr(tag, xml_attr_new("recur", event->recur));
 921         xml_tag_add_attr(tag, xml_attr_new("tzid", event->tzid));
 922
 923         /* updating answers saves events, don't save them with reply type */
 924         if (tmp_method == ICAL_METHOD_REPLY)
 925                 tmp_method = ICAL_METHOD_REQUEST;
 926
 927         tmp = g_strdup_printf("%d", tmp_method);
 928         xml_tag_add_attr(tag, xml_attr_new("method", tmp));
 929         g_free(tmp);
 930
 931         tmp = g_strdup_printf("%d", event->sequence);
 932         xml_tag_add_attr(tag, xml_attr_new("sequence", tmp));
 933         g_free(tmp);
 934
 935         tmp = g_strdup_printf("%d", event->type);
 936         xml_tag_add_attr(tag, xml_attr_new("type", tmp));
 937         g_free(tmp);
 938
 939         tmp = g_strdup_printf("%lld", (long long)event->postponed);
 940         xml_tag_add_attr(tag, xml_attr_new("postponed", tmp));
 941         g_free(tmp);
 942
 943         tmp = g_strdup_printf("%d", event->rec_occurrence);
 944         xml_tag_add_attr(tag, xml_attr_new("rec_occurrence", tmp));
 945         g_free(tmp);
 946
 947         xmlnode = xml_node_new(tag, NULL);
 948         rootnode = g_node_new(xmlnode);
 949
 950         while (answers && answers->data) {
 951                 XMLNode *ansxmlnode = NULL;
 952                 GNode *ansnode = NULL;
 953                 XMLTag *anstag = xml_tag_new("answer");
 954                 Answer *a = (Answer *)answers->data;
 955                 xml_tag_add_attr(anstag, xml_attr_new("attendee", a->attendee));
 956                 xml_tag_add_attr(anstag, xml_attr_new("name", a->name?a->name:""));
 957                 tmp = g_strdup_printf("%d", a->answer);
 958                 xml_tag_add_attr(anstag, xml_attr_new("answer", tmp));
 959                 g_free(tmp);
 960                 tmp = g_strdup_printf("%d", a->cutype);
 961                 xml_tag_add_attr(anstag, xml_attr_new("cutype", tmp));
 962                 g_free(tmp);
 963                 ansxmlnode = xml_node_new(anstag, NULL);
 964                 ansnode = g_node_new(ansxmlnode);
 965                 g_node_append(rootnode, ansnode);
 966                 answers = answers->next;
 967         }
 968
 969         path = vcal_manager_get_event_file(event->uid);
 970
 971         if ((pfile = prefs_write_open(path)) == NULL) {
 972                 gchar *dir_path = vcal_manager_get_event_path();
 973                 if (!is_dir_exist(dir_path) && make_dir(vcal_manager_get_event_path()) != 0) {
 974                         g_free(dir_path);
 975                         g_free(path);
 976                         return;
 977                 }
 978                 g_free(dir_path);
 979                 if ((pfile = prefs_write_open(path)) == NULL) {
 980                         g_free(path);
 981                         return;
 982                 }
 983         }
 984
 985         g_free(path);
 986         xml_file_put_xml_decl(pfile->fp);
 987         xml_write_tree(rootnode, pfile->fp);
 988         xml_free_tree(rootnode);
 989
 990         if (prefs_file_close(pfile) < 0) {
 991                 g_warning("failed to write event.");
 992                 return;
 993         }
 994
 995         if (export_after)
 996                 vcal_folder_export(NULL);
 997 }
 998
 999 static VCalEvent *event_get_from_xml (const gchar *uid, GNode *node)
1000 {
1001         XMLNode *xmlnode;
1002         GList *list;
1003         gchar *org = NULL, *location = NULL, *summary = NULL, *orgname = NULL;
1004         gchar *dtstart = NULL, *dtend = NULL, *tzid = NULL;
1005         gchar *description = NULL, *url = NULL, *recur = NULL;
1006         VCalEvent *event = NULL;
1007         icalproperty_method method = ICAL_METHOD_REQUEST;
1008         icalcomponent_kind type = ICAL_VEVENT_COMPONENT;
1009         gint sequence = 0, rec_occurrence = 0;
1010         time_t postponed = (time_t)0;
1011
1012         g_return_val_if_fail(node->data != NULL, NULL);
1013
1014         xmlnode = node->data;
1015         if (strcmp2(xmlnode->tag->tag, "event") != 0) {
1016                 g_warning("tag name != \"event\"");
1017                 return NULL;
1018         }
1019
1020         list = xmlnode->tag->attr;
1021         for (; list != NULL; list = list->next) {
1022                 XMLAttr *attr = list->data;
1023
1024                 if (!attr || !attr->name || !attr->value) continue;
1025                 if (!strcmp(attr->name, "organizer"))
1026                         org = g_strdup(attr->value);
1027                 if (!strcmp(attr->name, "orgname"))
1028                         orgname = g_strdup(attr->value);
1029                 if (!strcmp(attr->name, "location"))
1030                         location = g_strdup(attr->value);
1031                 if (!strcmp(attr->name, "summary"))
1032                         summary = g_strdup(attr->value);
1033                 if (!strcmp(attr->name, "description"))
1034                         description = g_strdup(attr->value);
1035                 if (!strcmp(attr->name, "url"))
1036                         url = g_strdup(attr->value);
1037                 if (!strcmp(attr->name, "dtstart"))
1038                         dtstart = g_strdup(attr->value);
1039                 if (!strcmp(attr->name, "dtend"))
1040                         dtend = g_strdup(attr->value);
1041                 if (!strcmp(attr->name, "recur"))
1042                         recur = g_strdup(attr->value);
1043                 if (!strcmp(attr->name, "tzid"))
1044                         tzid = g_strdup(attr->value);
1045                 if (!strcmp(attr->name, "type"))
1046                         type = atoi(attr->value);
1047                 if (!strcmp(attr->name, "method"))
1048                         method = atoi(attr->value);
1049                 if (!strcmp(attr->name, "sequence"))
1050                         sequence = atoi(attr->value);
1051                 if (!strcmp(attr->name, "postponed"))
1052                         postponed = atoi(attr->value);
1053                 if (!strcmp(attr->name, "rec_occurrence"))
1054                         rec_occurrence = atoi(attr->value);
1055         }
1056
1057         event = vcal_manager_new_event(uid, org, orgname, location, summary, description,
1058                                         dtstart, dtend, recur, tzid, url, method,
1059                                         sequence, type);
1060
1061         event->postponed = postponed;
1062         event->rec_occurrence = rec_occurrence;
1063
1064         g_free(org);
1065         g_free(orgname);
1066         g_free(location);
1067         g_free(summary);
1068         g_free(description);
1069         g_free(url);
1070         g_free(dtstart);
1071         g_free(dtend);
1072         g_free(recur);
1073         g_free(tzid);
1074
1075         node = node->children;
1076         while (node != NULL) {
1077                 gchar *attendee = NULL;
1078                 gchar *name = NULL;
1079                 icalparameter_partstat answer = ICAL_PARTSTAT_NEEDSACTION;
1080                 icalparameter_cutype cutype   = ICAL_CUTYPE_INDIVIDUAL;
1081
1082                 xmlnode = node->data;
1083                 if (strcmp2(xmlnode->tag->tag, "answer") != 0) {
1084                         g_warning("tag name != \"answer\"");
1085                         return event;
1086                 }
1087                 list = xmlnode->tag->attr;
1088                 for (; list != NULL; list = list->next) {
1089                         XMLAttr *attr = list->data;
1090
1091                         if (!attr || !attr->name || !attr->value) continue;
1092                         if (!strcmp(attr->name, "attendee"))
1093                                 attendee = g_strdup(attr->value);
1094                         if (!strcmp(attr->name, "name"))
1095                                 name = g_strdup(attr->value);
1096                         if (!strcmp(attr->name, "answer"))
1097                                 answer = atoi(attr->value);
1098                         if (!strcmp(attr->name, "cutype"))
1099                                 cutype = atoi(attr->value);
1100                 }
1101
1102                 event->answers = g_slist_prepend(event->answers, answer_new(attendee, name, answer, cutype));
1103                 g_free(attendee);
1104                 g_free(name);
1105                 node = node->next;
1106         }
1107         event->answers = g_slist_reverse(event->answers);
1108
1109         return event;
1110 }
1111
1112 VCalEvent *vcal_manager_load_event (const gchar *uid)
1113 {
1114         GNode *node;
1115         gchar *path = NULL;
1116         VCalEvent *event = NULL;
1117
1118         path = vcal_manager_get_event_file(uid);
1119
1120         if (!is_file_exist(path)) {
1121                 g_free(path);
1122                 return NULL;
1123         }
1124
1125         node = xml_parse_file(path);
1126
1127         g_free(path);
1128
1129         if (!node) {
1130                 g_warning("no node");
1131                 return NULL;
1132         }
1133
1134         event = event_get_from_xml(uid, node);
1135         /* vcal_manager_event_print(event); */
1136         xml_free_tree(node);
1137
1138         if (!event)
1139                 return NULL;
1140
1141         while (strchr(event->summary, '\n'))
1142                 *(strchr(event->summary, '\n')) = ' ';
1143
1144         return event;
1145
1146 }
1147
1148 void vcal_manager_update_answer (VCalEvent      *event,
1149                                  const gchar    *attendee,
1150                                  const gchar    *name,
1151                                  icalparameter_partstat ans,
1152                                  icalparameter_cutype cutype)
1153 {
1154         Answer *answer = NULL;
1155         GSList *existing = NULL;
1156         Answer *existing_a = NULL;
1157
1158         if (!ans)
1159                 return;
1160
1161         answer = answer_new(attendee, name, ans, cutype);
1162         existing = answer_find(event, answer);
1163
1164         if (existing) {
1165                 existing_a = (Answer *)existing->data;
1166
1167                 if (!answer->name && existing_a->name)
1168                         answer->name = g_strdup(existing_a->name);
1169                 if (!answer->cutype && existing_a->cutype)
1170                         answer->cutype = existing_a->cutype;
1171
1172                 answer_remove(event, answer);
1173         }
1174
1175         answer_add(event, answer);
1176
1177         vcal_manager_save_event(event, FALSE);
1178 }
1179
1180 static gchar *write_headers(PrefsAccount        *account,
1181                             VCalEvent           *event,
1182                             gboolean             short_headers,
1183                             gboolean             is_reply,
1184                             gboolean             is_pseudo_display)
1185 {
1186         gchar *subject = NULL;
1187         gchar date[RFC822_DATE_BUFFSIZE];
1188         gchar *save_folder = NULL;
1189         gchar *result = NULL;
1190         gchar *queue_headers = NULL;
1191         gchar *method_str = NULL;
1192         gchar *attendees = NULL;
1193         icalparameter_partstat status;
1194         gchar *prefix = NULL;
1195         gchar enc_subject[512], enc_from[512], *from = NULL;
1196         gchar *msgid;
1197         gchar *calmsgid = NULL;
1198
1199         cm_return_val_if_fail(account != NULL, NULL);
1200
1201         memset(date, 0, sizeof(date));
1202
1203         if (is_pseudo_display) {
1204                 struct icaltimetype itt = (icaltime_from_string(event->dtstart));
1205                 time_t t = icaltime_as_timet(itt);
1206                 get_rfc822_date_from_time_t(date, sizeof(date), t);
1207         } else {
1208                 get_rfc822_date(date, sizeof(date));
1209         }
1210
1211         if (account_get_special_folder(account, F_OUTBOX)) {
1212                 save_folder = folder_item_get_identifier(account_get_special_folder
1213                                   (account, F_OUTBOX));
1214         }
1215
1216         if (!is_reply) {
1217                 GSList *cur = event->answers;
1218                 while (cur && cur->data) {
1219                         gchar *tmp = NULL;
1220                         Answer *a = (Answer *)cur->data;
1221
1222                         if (strcasecmp(a->attendee, event->organizer)) {
1223                                 if (attendees) {
1224                                         tmp = g_strdup_printf("%s>,\n <%s", attendees, a->attendee);
1225                                         g_free(attendees);
1226                                         attendees = tmp;
1227                                 } else {
1228                                         attendees = g_strdup_printf("%s", a->attendee);
1229                                 }
1230                         }
1231                         cur = cur->next;
1232                 }
1233         }
1234
1235         if (!short_headers) {
1236                 queue_headers = g_strdup_printf("S:%s\n"
1237                                 "SSV:%s\n"
1238                                 "R:<%s>\n"
1239                                 "MAID:%d\n"
1240                                 "%s%s%s"
1241                                 "X-Claws-End-Special-Headers: 1\n",
1242                                 account->address,
1243                                 account->smtp_server,
1244                                 is_reply ? event->organizer:attendees,
1245                                 account->account_id,
1246                                 save_folder?"SCF:":"",
1247                                 save_folder?save_folder:"",
1248                                 save_folder?"\n":"");
1249         } else {
1250                 queue_headers = g_strdup("");
1251         }
1252
1253         prefix = "";
1254         if (is_reply) {
1255                 method_str = "REPLY";
1256                 status = vcal_manager_get_reply_for_attendee(event, account->address);
1257                 if (status == ICAL_PARTSTAT_ACCEPTED)
1258                         prefix = _("Accepted: ");
1259                 else if (status == ICAL_PARTSTAT_DECLINED)
1260                         prefix = _("Declined: ");
1261                 else if (status == ICAL_PARTSTAT_TENTATIVE)
1262                         prefix = _("Tentatively Accepted: ");
1263                 else
1264                         prefix = "Re: ";
1265         } else if (event->method == ICAL_METHOD_PUBLISH) {
1266                 method_str = "PUBLISH";
1267         } else if (event->method == ICAL_METHOD_CANCEL) {
1268                 method_str = "CANCEL";
1269         } else {
1270                 method_str = "REQUEST";
1271         }
1272
1273         subject = g_strdup_printf("%s%s", prefix, event->summary);
1274
1275         conv_encode_header_full(enc_subject, sizeof(enc_subject), subject, strlen("Subject: "),
1276                         FALSE, conv_get_outgoing_charset_str());
1277         from = is_reply?account->name:(event->orgname?event->orgname:"");
1278         conv_encode_header_full(enc_from, sizeof(enc_from), from, strlen("From: "),
1279                         TRUE, conv_get_outgoing_charset_str());
1280
1281         if (is_pseudo_display && event->uid) {
1282                 calmsgid = g_strdup_printf("Message-ID: <%s>\n",event->uid);
1283         } else {
1284                 calmsgid = g_strdup("");
1285         }
1286
1287         msgid = prefs_account_generate_msgid(account);
1288
1289         result = g_strdup_printf("%s"
1290                                 "From: %s <%s>\n"
1291                                 "To: <%s>\n"
1292                                 "Subject: %s\n"
1293                                 "Date: %s\n"
1294                                 "MIME-Version: 1.0\n"
1295                                 "Content-Type: text/calendar; method=%s; charset=\"%s\"\n"
1296                                 "Content-Transfer-Encoding: 8bit\n"
1297                                 "%s"
1298                                 "%s: <%s>\n",
1299                                 queue_headers,
1300                                 enc_from,
1301                                 is_reply ? account->address:event->organizer,
1302                                 is_reply ? event->organizer:(attendees?attendees:event->organizer),
1303                                 enc_subject,
1304                                 date,
1305                                 method_str,
1306                                 CS_UTF_8,
1307                                 calmsgid,
1308                                 is_pseudo_display?
1309                                         "In-Reply-To":"Message-ID",
1310                                 is_pseudo_display?
1311                                         event_to_today_str(event, 0):msgid);
1312         g_free(calmsgid);
1313         g_free(subject);
1314         g_free(save_folder);
1315         g_free(queue_headers);
1316         g_free(attendees);
1317         g_free(msgid);
1318         return result;
1319
1320
1321 }
1322
1323 static gchar *write_headers_ical(PrefsAccount   *account,
1324                             icalcomponent       *ievent,
1325                             gchar               *orga)
1326 {
1327         gchar subject[512];
1328         gchar date[RFC822_DATE_BUFFSIZE];
1329         gchar *result = NULL;
1330         gchar *method_str = NULL;
1331         gchar *summary = NULL;
1332         gchar *organizer = NULL;
1333         gchar *orgname = NULL;
1334         icalproperty *prop = NULL;
1335         gchar *calmsgid = NULL;
1336
1337         time_t t = (time_t)0;
1338
1339         memset(subject, 0, sizeof(subject));
1340         memset(date, 0, sizeof(date));
1341
1342         prop = icalcomponent_get_first_property(ievent, ICAL_SUMMARY_PROPERTY);
1343         if (prop) {
1344                 summary = g_strdup(icalproperty_get_summary(prop));
1345                 icalproperty_free(prop);
1346         } else {
1347                 summary = g_strdup("");
1348         }
1349
1350         while (strchr(summary, '\n'))
1351                 *(strchr(summary, '\n')) = ' ';
1352
1353         prop = icalcomponent_get_first_property(ievent, ICAL_ORGANIZER_PROPERTY);
1354         if (prop) {
1355                 organizer = g_strdup(icalproperty_get_organizer(prop));
1356                 if (icalproperty_get_parameter_as_string(prop, "CN") != NULL)
1357                         orgname = g_strdup(icalproperty_get_parameter_as_string(prop, "CN"));
1358
1359                 icalproperty_free(prop);
1360         } else {
1361                 organizer = orga? g_strdup(orga):g_strdup("");
1362         }
1363
1364         prop = icalcomponent_get_first_property(ievent, ICAL_DTSTART_PROPERTY);
1365         if (prop) {
1366                 t = icaltime_as_timet(icalproperty_get_dtstart(prop));
1367                 get_rfc822_date_from_time_t(date, sizeof(date), t);
1368         } else {
1369                 get_rfc822_date(date, sizeof(date));
1370         }
1371
1372         conv_encode_header(subject, 511, summary, strlen("Subject: "), FALSE);
1373
1374         method_str = "PUBLISH";
1375
1376         prop = icalcomponent_get_first_property(ievent, ICAL_UID_PROPERTY);
1377         if (prop) {
1378                 calmsgid = g_strdup_printf("Message-ID: <%s>\n",icalproperty_get_uid(prop));
1379                 icalproperty_free(prop);
1380         } else {
1381                 calmsgid = g_strdup("");
1382         }
1383
1384
1385         result = g_strdup_printf("From: %s <%s>\n"
1386                                 "To: <%s>\n"
1387                                 "Subject: %s%s\n"
1388                                 "Date: %s\n"
1389                                 "MIME-Version: 1.0\n"
1390                                 "Content-Type: text/calendar; method=%s; charset=\"%s\"; vcalsave=\"no\"\n"
1391                                 "Content-Transfer-Encoding: quoted-printable\n"
1392                                 "%s"
1393                                 "In-Reply-To: <%s>\n",
1394                                 orgname?orgname:"",
1395                                 !strncmp(organizer, "MAILTO:", 7) ? organizer+7 : organizer,
1396                                 account->address,
1397                                 "",
1398                                 subject,
1399                                 date,
1400                                 method_str,
1401                                 conv_get_outgoing_charset_str(),
1402                                 calmsgid,
1403                                 event_to_today_str(NULL, t));
1404
1405         g_free(calmsgid);
1406         g_free(orgname);
1407         g_free(organizer);
1408         g_free(summary);
1409
1410         return result;
1411
1412
1413 }
1414
1415 static gboolean vcal_manager_send (PrefsAccount         *account,
1416                                      VCalEvent          *event,
1417                                      gboolean            is_reply)
1418 {
1419         gchar *tmpfile = NULL;
1420         gint msgnum;
1421         FolderItem *folderitem;
1422         gchar *msgpath = NULL;
1423         Folder *folder = NULL;
1424
1425         tmpfile = vcal_manager_event_dump(event, is_reply, FALSE, NULL, TRUE);
1426
1427         if (!tmpfile)
1428                 return FALSE;
1429
1430         folderitem = account_get_special_folder(account, F_QUEUE);
1431         if (!folderitem) {
1432                 g_warning("can't find queue folder for %s", account->address);
1433                 g_unlink(tmpfile);
1434                 g_free(tmpfile);
1435                 return FALSE;
1436         }
1437         folder_item_scan(folderitem);
1438
1439         if ((msgnum = folder_item_add_msg(folderitem, tmpfile, NULL, TRUE)) < 0) {
1440                 g_warning("can't queue the message");
1441                 g_unlink(tmpfile);
1442                 g_free(tmpfile);
1443                 return FALSE;
1444         }
1445
1446         msgpath = folder_item_fetch_msg(folderitem, msgnum);
1447
1448         if (!prefs_common_get_prefs()->work_offline) {
1449                 gchar *err = NULL;
1450                 gboolean queued_removed = FALSE;
1451                 gint val = procmsg_send_message_queue_with_lock(msgpath, &err, folderitem, msgnum, &queued_removed);
1452                 if (val == 0) {
1453                         if (!queued_removed)
1454                                 folder_item_remove_msg(folderitem, msgnum);
1455                         folder_item_scan(folderitem);
1456                 } else if (err) {
1457                         alertpanel_error_log("%s", err);
1458                         g_free(err);
1459                 }
1460         }
1461         g_unlink(tmpfile);
1462         g_free(tmpfile);
1463         g_free(msgpath);
1464
1465         folder = folder_find_from_name ("vCalendar", vcal_folder_get_class());
1466         if (folder)
1467                 folder_item_scan(folder->inbox);
1468
1469         vcalviewer_reload(folder->inbox);
1470         return TRUE;
1471 }
1472
1473 gboolean vcal_manager_reply (PrefsAccount       *account,
1474                              VCalEvent          *event)
1475 {
1476         return vcal_manager_send(account, event, TRUE);
1477 }
1478
1479 gboolean vcal_manager_request (PrefsAccount     *account,
1480                                VCalEvent        *event)
1481 {
1482         return vcal_manager_send(account, event, FALSE);
1483 }
1484
1485 EventTime event_to_today(VCalEvent *event, time_t t)
1486 {
1487         struct tm evtstart, today;
1488         time_t evtstart_t, today_t;
1489         struct icaltimetype itt;
1490
1491         tzset();
1492
1493         today_t = time(NULL);
1494         if (event) {
1495                 itt = icaltime_from_string(event->dtstart);
1496                 evtstart_t = icaltime_as_timet(itt);
1497         } else {
1498                 evtstart_t = t;
1499         }
1500
1501 #ifndef G_OS_WIN32
1502         struct tm buft;
1503         today = *localtime_r(&today_t, &buft);
1504         localtime_r(&evtstart_t, &evtstart);
1505 #else
1506         if (today_t < 0)
1507                 today_t = 1;
1508         if (evtstart_t < 0)
1509                 evtstart_t = 1;
1510         today = *localtime(&today_t);
1511         evtstart = *localtime(&evtstart_t);
1512 #endif
1513
1514         if (today.tm_year == evtstart.tm_year) {
1515                 int days = evtstart.tm_yday - today.tm_yday;
1516                 if (days < 0) {
1517                         return EVENT_PAST;
1518                 } else if (days == 0) {
1519                         return EVENT_TODAY;
1520                 } else if (days == 1) {
1521                         return EVENT_TOMORROW;
1522                 } else if (days > 1 && days < 7) {
1523                         return EVENT_THISWEEK;
1524                 } else {
1525                         return EVENT_LATER;
1526                 }
1527         } else if (today.tm_year > evtstart.tm_year) {
1528                 return EVENT_PAST;
1529         } else if (today.tm_year == evtstart.tm_year - 1) {
1530                 int days = ((365 - today.tm_yday) + evtstart.tm_yday);
1531                 if (days == 0) {
1532                         return EVENT_TODAY;
1533                 } else if (days == 1) {
1534                         return EVENT_TOMORROW;
1535                 } else if (days > 1 && days < 7) {
1536                         return EVENT_THISWEEK;
1537                 } else {
1538                         return EVENT_LATER;
1539                 }
1540         } else
1541                 return EVENT_LATER;
1542 }
1543
1544 const gchar *event_to_today_str(VCalEvent *event, time_t t)
1545 {
1546         EventTime days = event_to_today(event, t);
1547         switch(days) {
1548         case EVENT_PAST:
1549                 return EVENT_PAST_ID;
1550         case EVENT_TODAY:
1551                 return EVENT_TODAY_ID;
1552         case EVENT_TOMORROW:
1553                 return EVENT_TOMORROW_ID;
1554         case EVENT_THISWEEK:
1555                 return EVENT_THISWEEK_ID;
1556         case EVENT_LATER:
1557                 return EVENT_LATER_ID;
1558         }
1559         return NULL;
1560 }