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