#include <stdarg.h>
#include <pthread.h>
#include <signal.h>
+#include <time.h>
#include "webcit.h"
#include "webserver.h"
-#ifdef HAVE_ICAL_H
-#include <ical.h>
-#endif
-
-
-#ifndef HAVE_ICAL_H
+#ifndef WEBCIT_WITH_CALENDAR_SERVICE
/*
- * Handler stub for builds with no calendar library available
+ * Handler stubs for builds with no calendar library available
*/
-void cal_process_attachment(char *part_source) {
+void cal_process_attachment(char *part_source, long msgnum, char *cal_partnum) {
wprintf("<I>This message contains calendaring/scheduling information,"
" but support for calendars is not available on this "
"particular system. Please ask your system administrator to "
"install a new version of the Citadel web service with "
- "calendaring enabled.</I><BR>\n"
+ "calendaring enabled.</I><br />\n"
);
}
-#else /* HAVE_ICAL_H */
+void display_calendar(long msgnum) {
+ wprintf("<i>"
+ "Cannot display calendar item. You are seeing this error "
+ "because your WebCit service has not been installed with "
+ "calendar support. Please contact your system administrator."
+ "</i><br />\n");
+}
+
+void display_task(long msgnum) {
+ wprintf("<i>"
+ "Cannot display to-do item. You are seeing this error "
+ "because your WebCit service has not been installed with "
+ "calendar support. Please contact your system administrator."
+ "</i><br />\n");
+}
+
+#else /* WEBCIT_WITH_CALENDAR_SERVICE */
+
+
+/****** End of handler stubs. Everything below this line is real. ******/
+
+
+
+
+/*
+ * Process a calendar object
+ * ...at this point it's already been deserialized by cal_process_attachment()
+ *
+ */
+void cal_process_object(icalcomponent *cal,
+ int recursion_level,
+ long msgnum,
+ char *cal_partnum
+) {
+ icalcomponent *c;
+ icalproperty *method = NULL;
+ icalproperty_method the_method = ICAL_METHOD_NONE;
+ icalproperty *p;
+ struct icaltimetype t;
+ time_t tt;
+ char buf[SIZ];
+ char conflict_name[SIZ];
+ int is_update = 0;
+
+ /* Leading HTML for the display of this object */
+ if (recursion_level == 0) {
+ wprintf("<CENTER><TABLE border=0>\n");
+ }
+
+ /* Look for a method */
+ method = icalcomponent_get_first_property(cal, ICAL_METHOD_PROPERTY);
+
+ /* See what we need to do with this */
+ if (method != NULL) {
+ the_method = icalproperty_get_method(method);
+ switch(the_method) {
+ case ICAL_METHOD_REQUEST:
+ wprintf("<TR><TD COLSPAN=2>\n"
+ "<IMG ALIGN=CENTER "
+ "SRC=\"/static/vcalendar.gif\">"
+ " "
+ "<B>Meeting invitation</B>"
+ "</TD></TR>\n"
+ );
+ break;
+ case ICAL_METHOD_REPLY:
+ wprintf("<TR><TD COLSPAN=2>\n"
+ "<IMG ALIGN=CENTER "
+ "SRC=\"/static/vcalendar.gif\">"
+ " "
+ "<B>Attendee's reply to your invitation</B>"
+ "</TD></TR>\n"
+ );
+ break;
+ case ICAL_METHOD_PUBLISH:
+ wprintf("<TR><TD COLSPAN=2>\n"
+ "<IMG ALIGN=CENTER "
+ "SRC=\"/static/vcalendar.gif\">"
+ " "
+ "<B>Published event</B>"
+ "</TD></TR>\n"
+ );
+ break;
+ default:
+ wprintf("<TR><TD COLSPAN=2>"
+ "I don't know what to do with this.</TD></TR>"
+ "\n");
+ break;
+ }
+ }
+
+ p = icalcomponent_get_first_property(cal, ICAL_SUMMARY_PROPERTY);
+ if (p != NULL) {
+ wprintf("<TR><TD><B>Summary:</B></TD><TD>");
+ escputs((char *)icalproperty_get_comment(p));
+ wprintf("</TD></TR>\n");
+ }
+
+ p = icalcomponent_get_first_property(cal, ICAL_LOCATION_PROPERTY);
+ if (p != NULL) {
+ wprintf("<TR><TD><B>Location:</B></TD><TD>");
+ escputs((char *)icalproperty_get_comment(p));
+ wprintf("</TD></TR>\n");
+ }
+
+ /*
+ * Only show start/end times if we're actually looking at the VEVENT
+ * component. Otherwise it shows bogus dates for things like timezone.
+ */
+ if (icalcomponent_isa(cal) == ICAL_VEVENT_COMPONENT) {
+
+ p = icalcomponent_get_first_property(cal,
+ ICAL_DTSTART_PROPERTY);
+ if (p != NULL) {
+ t = icalproperty_get_dtstart(p);
+
+ if (t.is_date) {
+ wprintf("<TR><TD><B>Date:"
+ "</B></TD><TD>"
+ "%s %d, %d</TD></TR>",
+ months[t.month - 1],
+ t.day, t.year
+ );
+ }
+ else {
+ tt = icaltime_as_timet(t);
+ fmt_date(buf, tt);
+ wprintf("<TR><TD><B>Starting date/time:"
+ "</B></TD><TD>"
+ "%s</TD></TR>", buf
+ );
+ }
+ }
+
+ p = icalcomponent_get_first_property(cal, ICAL_DTEND_PROPERTY);
+ if (p != NULL) {
+ t = icalproperty_get_dtend(p);
+ tt = icaltime_as_timet(t);
+ fmt_date(buf, tt);
+ wprintf("<TR><TD><B>Ending date/time:</B></TD><TD>"
+ "%s</TD></TR>", buf
+ );
+ }
+
+ }
+
+ p = icalcomponent_get_first_property(cal, ICAL_DESCRIPTION_PROPERTY);
+ if (p != NULL) {
+ wprintf("<TR><TD><B>Description:</B></TD><TD>");
+ escputs((char *)icalproperty_get_comment(p));
+ wprintf("</TD></TR>\n");
+ }
+
+ /* If the component has attendees, iterate through them. */
+ for (p = icalcomponent_get_first_property(cal, ICAL_ATTENDEE_PROPERTY); (p != NULL); p = icalcomponent_get_next_property(cal, ICAL_ATTENDEE_PROPERTY)) {
+ wprintf("<TR><TD><B>Attendee:</B></TD><TD>");
+ strcpy(buf, icalproperty_get_attendee(p));
+ if (!strncasecmp(buf, "MAILTO:", 7)) {
+
+ /* screen name or email address */
+ strcpy(buf, &buf[7]);
+ striplt(buf);
+ escputs(buf);
+ wprintf(" ");
+
+ /* participant status */
+ partstat_as_string(buf, p);
+ escputs(buf);
+ }
+ wprintf("</TD></TR>\n");
+ }
+
+ /* If the component has subcomponents, recurse through them. */
+ for (c = icalcomponent_get_first_component(cal, ICAL_ANY_COMPONENT);
+ (c != 0);
+ c = icalcomponent_get_next_component(cal, ICAL_ANY_COMPONENT)) {
+ /* Recursively process subcomponent */
+ cal_process_object(c, recursion_level+1, msgnum, cal_partnum);
+ }
+
+ /* If this is a REQUEST, display conflicts and buttons */
+ if (the_method == ICAL_METHOD_REQUEST) {
+
+ /* Check for conflicts */
+ lprintf(9, "Checking server calendar for conflicts...\n");
+ serv_printf("ICAL conflicts|%ld|%s|", msgnum, cal_partnum);
+ serv_gets(buf);
+ if (buf[0] == '1') {
+ while (serv_gets(buf), strcmp(buf, "000")) {
+ extract(conflict_name, buf, 3);
+ is_update = extract_int(buf, 4);
+ wprintf("<TR><TD><B><I>%s</I></B></TD>"
+ "<TD>"
+ "%s "
+ "<I>"",
+
+ (is_update ?
+ "Update:" :
+ "CONFLICT:"
+ ),
+
+ (is_update ?
+ "This is an update of" :
+ "This event would conflict with"
+ )
+
+ );
+ escputs(conflict_name);
+ wprintf(""</I> "
+ "which is already in your calendar."
+ "</TD></TR>\n");
+ }
+ }
+ lprintf(9, "...done.\n");
+
+ /* Display the Accept/Decline buttons */
+ wprintf("<TR><TD COLSPAN=2>"
+ "<FORM METHOD=\"GET\" "
+ "ACTION=\"/respond_to_request\">\n"
+ "<INPUT TYPE=\"submit\" NAME=\"sc\" "
+ "VALUE=\"Accept\">\n"
+ " "
+ "<INPUT TYPE=\"submit\" NAME=\"sc\" "
+ "VALUE=\"Tentative\">\n"
+ " "
+ "<INPUT TYPE=\"submit\" NAME=\"sc\" "
+ "VALUE=\"Decline\">\n"
+ "<INPUT TYPE=\"hidden\" NAME=\"msgnum\" "
+ "VALUE=\"%ld\">"
+ "<INPUT TYPE=\"hidden\" NAME=\"cal_partnum\" "
+ "VALUE=\"%s\">"
+ "</FORM>"
+ "</TD></TR>\n",
+ msgnum, cal_partnum
+ );
+
+ }
+
+ /* If this is a REPLY, display update button */
+ if (the_method == ICAL_METHOD_REPLY) {
+
+ /***********
+ * In the future, if we want to validate this object before
+ * continuing, we can do it this way:
+ serv_printf("ICAL whatever|%ld|%s|", msgnum, cal_partnum);
+ serv_gets(buf);
+ }
+ ***********/
+
+ /* Display the update buttons */
+ wprintf("<TR><TD COLSPAN=2>"
+ "Click <i>Update</i> to accept this reply and "
+ "update your calendar."
+ "<FORM METHOD=\"GET\" "
+ "ACTION=\"/handle_rsvp\">\n"
+ "<INPUT TYPE=\"submit\" NAME=\"sc\" "
+ "VALUE=\"Update\">\n"
+ " "
+ "<INPUT TYPE=\"submit\" NAME=\"sc\" "
+ "VALUE=\"Ignore\">\n"
+ "<INPUT TYPE=\"hidden\" NAME=\"msgnum\" "
+ "VALUE=\"%ld\">"
+ "<INPUT TYPE=\"hidden\" NAME=\"cal_partnum\" "
+ "VALUE=\"%s\">"
+ "</FORM>"
+ "</TD></TR>\n",
+ msgnum, cal_partnum
+ );
+
+ }
+
+ /* Trailing HTML for the display of this object */
+ if (recursion_level == 0) {
+
+ wprintf("</TR></TABLE></CENTER>\n");
+ }
+}
+
/*
- * Handler stub for builds with no calendar library available
+ * Deserialize a calendar object in a message so it can be processed.
+ * (This is the main entry point for these things)
*/
-void cal_process_attachment(char *part_source) {
+void cal_process_attachment(char *part_source, long msgnum, char *cal_partnum) {
icalcomponent *cal;
- wprintf("Processing calendar attachment<BR>\n");
cal = icalcomponent_new_from_string(part_source);
if (cal == NULL) {
- wprintf("Error parsing calendar object: %s<BR>\n",
- icalerror_strerror(icalerrno));
+ wprintf("Error parsing calendar object<br />\n");
return;
}
- wprintf("Parsing went well. Cool.<BR>\n");
+ ical_dezonify(cal);
+ cal_process_object(cal, 0, msgnum, cal_partnum);
/* Free the memory we obtained from libical's constructor */
icalcomponent_free(cal);
}
-#endif /* HAVE_ICAL_H */
+
+
+
+/*
+ * Respond to a meeting request
+ */
+void respond_to_request(void) {
+ char buf[SIZ];
+
+ output_headers(1, 1, 2, 0, 0, 0, 0);
+
+ wprintf("<div id=\"banner\">\n");
+ wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#444455\"><TR><TD>"
+ "<SPAN CLASS=\"titlebar\">Respond to meeting request</SPAN>"
+ "</TD></TR></TABLE>\n"
+ );
+ wprintf("</div>\n<div id=\"content\">\n");
+
+ serv_printf("ICAL respond|%s|%s|%s|",
+ bstr("msgnum"),
+ bstr("cal_partnum"),
+ bstr("sc")
+ );
+ serv_gets(buf);
+
+ if (buf[0] == '2') {
+ wprintf("<TABLE BORDER=0><TR><TD>"
+ "<IMG SRC=\"static/vcalendar.gif\" ALIGN=CENTER>"
+ "</TD><TD>"
+ );
+ if (!strcasecmp(bstr("sc"), "accept")) {
+ wprintf("You have accepted this meeting invitation. "
+ "It has been entered into your calendar, "
+ );
+ } else if (!strcasecmp(bstr("sc"), "tentative")) {
+ wprintf("You have tentatively accepted this meeting invitation. "
+ "It has been 'pencilled in' to your calendar, "
+ );
+ } else if (!strcasecmp(bstr("sc"), "decline")) {
+ wprintf("You have declined this meeting invitation. "
+ "It has <b>not</b> been entered into your calendar, "
+ );
+ }
+ wprintf("and a reply has been sent to the meeting organizer."
+ "</TD></TR></TABLE>\n"
+ );
+ } else {
+ wprintf("<IMG SRC=\"static/error.gif\" ALIGN=CENTER>"
+ "%s\n", &buf[4]);
+ }
+
+ wprintf("<A HREF=\"/dotskip?room=");
+ urlescputs(WC->wc_roomname);
+ wprintf("\"><br />Return to messages</A><br />\n");
+
+ wDumpContent(1);
+}
+
+
+
+/*
+ * Handle an incoming RSVP
+ */
+void handle_rsvp(void) {
+ char buf[SIZ];
+
+ output_headers(1, 1, 2, 0, 0, 0, 0);
+
+ wprintf("<div id=\"banner\">\n");
+ wprintf("<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#444455\"><TR><TD>"
+ "<SPAN CLASS=\"titlebar\">"
+ "Update your calendar with this RSVP</SPAN>"
+ "</TD></TR></TABLE>\n"
+ "</div>\n<div id=\"content\">\n"
+ );
+
+ serv_printf("ICAL handle_rsvp|%s|%s|%s|",
+ bstr("msgnum"),
+ bstr("cal_partnum"),
+ bstr("sc")
+ );
+ serv_gets(buf);
+
+ if (buf[0] == '2') {
+ wprintf("<TABLE BORDER=0><TR><TD>"
+ "<IMG SRC=\"static/vcalendar.gif\" ALIGN=CENTER>"
+ "</TD><TD>"
+ );
+ if (!strcasecmp(bstr("sc"), "update")) {
+ wprintf("Your calendar has been updated "
+ "to reflect this RSVP."
+ );
+ } else if (!strcasecmp(bstr("sc"), "ignore")) {
+ wprintf("You have chosen to ignore this RSVP. "
+ "Your calendar has <b>not</b> been updated."
+ );
+ }
+ wprintf("</TD></TR></TABLE>\n"
+ );
+ } else {
+ wprintf("<IMG SRC=\"static/error.gif\" ALIGN=CENTER>"
+ "%s\n", &buf[4]);
+ }
+
+ wprintf("<A HREF=\"/dotskip?room=");
+ urlescputs(WC->wc_roomname);
+ wprintf("\"><br />Return to messages</A><br />\n");
+
+ wDumpContent(1);
+}
+
+
+
+
+/*****************************************************************************/
+
+
+
+/*
+ * Display handlers for message reading
+ */
+
+
+
+/*
+ * If we're reading calendar items, just store them for now. We have to
+ * sort and re-output them later when we draw the calendar.
+ */
+void display_individual_cal(icalcomponent *cal, long msgnum) {
+
+ WC->num_cal += 1;
+
+ WC->disp_cal = realloc(WC->disp_cal,
+ (sizeof(struct disp_cal) * WC->num_cal) );
+ WC->disp_cal[WC->num_cal - 1].cal = icalcomponent_new_clone(cal);
+
+ WC->disp_cal[WC->num_cal - 1].cal_msgnum = msgnum;
+}
+
+
+
+/*
+ * Display a task by itself (for editing)
+ *
+ */
+void display_edit_individual_task(icalcomponent *supplied_vtodo, long msgnum) {
+ icalcomponent *vtodo;
+ icalproperty *p;
+ struct icaltimetype t;
+ time_t now;
+ int created_new_vtodo = 0;
+
+ now = time(NULL);
+
+ if (supplied_vtodo != NULL) {
+ vtodo = supplied_vtodo;
+
+ /* If we're looking at a fully encapsulated VCALENDAR
+ * rather than a VTODO component, attempt to use the first
+ * relevant VTODO subcomponent. If there is none, the
+ * NULL returned by icalcomponent_get_first_component() will
+ * tell the next iteration of this function to create a
+ * new one.
+ */
+ if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
+ display_edit_individual_task(
+ icalcomponent_get_first_component(
+ vtodo, ICAL_VTODO_COMPONENT
+ ), msgnum
+ );
+ return;
+ }
+ }
+ else {
+ vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
+ created_new_vtodo = 1;
+ }
+
+ output_headers(1, 1, 2, 0, 0, 0, 0);
+ wprintf("<div id=\"banner\">\n"
+ "<TABLE WIDTH=100%% BORDER=0 BGCOLOR=\"#444455\"><TR><TD>"
+ "<SPAN CLASS=\"titlebar\">Edit task</SPAN>"
+ "</TD></TR></TABLE>\n"
+ "</div>\n<div id=\"content\">\n"
+ );
+
+ do_template("beginbox_nt");
+
+ wprintf("<FORM METHOD=\"POST\" ACTION=\"/save_task\">\n");
+ wprintf("<INPUT TYPE=\"hidden\" NAME=\"msgnum\" VALUE=\"%ld\">\n",
+ msgnum);
+
+ wprintf("<TABLE border=0>\n");
+
+ wprintf("<TR><TD>Summary:</TD><TD>"
+ "<INPUT TYPE=\"text\" NAME=\"summary\" "
+ "MAXLENGTH=\"64\" SIZE=\"64\" VALUE=\"");
+ p = icalcomponent_get_first_property(vtodo, ICAL_SUMMARY_PROPERTY);
+ if (p != NULL) {
+ escputs((char *)icalproperty_get_comment(p));
+ }
+ wprintf("\"></TD></TR>\n");
+
+ wprintf("<TR><TD>Start date:</TD><TD>");
+ p = icalcomponent_get_first_property(vtodo, ICAL_DTSTART_PROPERTY);
+ if (p != NULL) {
+ t = icalproperty_get_dtstart(p);
+ }
+ else {
+ t = icaltime_from_timet(now, 0);
+ }
+ display_icaltimetype_as_webform(&t, "dtstart");
+ wprintf("</TD></TR>\n");
+
+ wprintf("<TR><TD>Due date:</TD><TD>");
+ p = icalcomponent_get_first_property(vtodo, ICAL_DUE_PROPERTY);
+ if (p != NULL) {
+ t = icalproperty_get_due(p);
+ }
+ else {
+ t = icaltime_from_timet(now, 0);
+ }
+ display_icaltimetype_as_webform(&t, "due");
+ wprintf("</TD></TR>\n");
+ wprintf("<TR><TD>Description:</TD><TD>");
+ wprintf("<TEXTAREA NAME=\"description\" wrap=soft "
+ "ROWS=10 COLS=80 WIDTH=80>\n"
+ );
+ p = icalcomponent_get_first_property(vtodo, ICAL_DESCRIPTION_PROPERTY);
+ if (p != NULL) {
+ escputs((char *)icalproperty_get_comment(p));
+ }
+ wprintf("</TEXTAREA></TD></TR></TABLE>\n");
+
+ wprintf("<CENTER>"
+ "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Save\">"
+ " "
+ "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Delete\">\n"
+ " "
+ "<INPUT TYPE=\"submit\" NAME=\"sc\" VALUE=\"Cancel\">\n"
+ "</CENTER>\n"
+ );
+
+ wprintf("</FORM>\n");
+
+ do_template("endbox");
+ wDumpContent(1);
+
+ if (created_new_vtodo) {
+ icalcomponent_free(vtodo);
+ }
+}
+
+/*
+ * Save an edited task
+ *
+ */
+void save_individual_task(icalcomponent *supplied_vtodo, long msgnum) {
+ char buf[SIZ];
+ int delete_existing = 0;
+ icalproperty *prop;
+ icalcomponent *vtodo;
+ int created_new_vtodo = 0;
+ int i;
+ int sequence = 0;
+
+ if (supplied_vtodo != NULL) {
+ vtodo = supplied_vtodo;
+ /* If we're looking at a fully encapsulated VCALENDAR
+ * rather than a VTODO component, attempt to use the first
+ * relevant VTODO subcomponent. If there is none, the
+ * NULL returned by icalcomponent_get_first_component() will
+ * tell the next iteration of this function to create a
+ * new one.
+ */
+ if (icalcomponent_isa(vtodo) == ICAL_VCALENDAR_COMPONENT) {
+ save_individual_task(
+ icalcomponent_get_first_component(
+ vtodo, ICAL_VTODO_COMPONENT
+ ), msgnum
+ );
+ return;
+ }
+ }
+ else {
+ vtodo = icalcomponent_new(ICAL_VTODO_COMPONENT);
+ created_new_vtodo = 1;
+ }
+
+ if (!strcasecmp(bstr("sc"), "Save")) {
+
+ /* Replace values in the component with ones from the form */
+
+ while (prop = icalcomponent_get_first_property(vtodo,
+ ICAL_SUMMARY_PROPERTY), prop != NULL) {
+ icalcomponent_remove_property(vtodo, prop);
+ icalproperty_free(prop);
+ }
+ icalcomponent_add_property(vtodo,
+ icalproperty_new_summary(bstr("summary")));
+
+ while (prop = icalcomponent_get_first_property(vtodo,
+ ICAL_DESCRIPTION_PROPERTY), prop != NULL) {
+ icalcomponent_remove_property(vtodo, prop);
+ icalproperty_free(prop);
+ }
+ icalcomponent_add_property(vtodo,
+ icalproperty_new_description(bstr("description")));
+
+ while (prop = icalcomponent_get_first_property(vtodo,
+ ICAL_DTSTART_PROPERTY), prop != NULL) {
+ icalcomponent_remove_property(vtodo, prop);
+ icalproperty_free(prop);
+ }
+ icalcomponent_add_property(vtodo,
+ icalproperty_new_dtstart(
+ icaltime_from_webform("dtstart")
+ )
+ );
+
+ while (prop = icalcomponent_get_first_property(vtodo,
+ ICAL_DUE_PROPERTY), prop != NULL) {
+ icalcomponent_remove_property(vtodo, prop);
+ icalproperty_free(prop);
+ }
+ icalcomponent_add_property(vtodo,
+ icalproperty_new_due(
+ icaltime_from_webform("due")
+ )
+ );
+
+ /* Give this task a UID if it doesn't have one. */
+ lprintf(9, "Give this task a UID if it doesn't have one.\n");
+ if (icalcomponent_get_first_property(vtodo,
+ ICAL_UID_PROPERTY) == NULL) {
+ generate_uuid(buf);
+ icalcomponent_add_property(vtodo,
+ icalproperty_new_uid(buf)
+ );
+ }
+
+ /* Increment the sequence ID */
+ lprintf(9, "Increment the sequence ID\n");
+ while (prop = icalcomponent_get_first_property(vtodo,
+ ICAL_SEQUENCE_PROPERTY), (prop != NULL) ) {
+ i = icalproperty_get_sequence(prop);
+ lprintf(9, "Sequence was %d\n", i);
+ if (i > sequence) sequence = i;
+ icalcomponent_remove_property(vtodo, prop);
+ icalproperty_free(prop);
+ }
+ ++sequence;
+ lprintf(9, "New sequence is %d. Adding...\n", sequence);
+ icalcomponent_add_property(vtodo,
+ icalproperty_new_sequence(sequence)
+ );
+
+
+ /* Serialize it and save it to the message base */
+ serv_puts("ENT0 1|||4");
+ serv_gets(buf);
+ if (buf[0] == '4') {
+ serv_puts("Content-type: text/calendar");
+ serv_puts("");
+ serv_puts(icalcomponent_as_ical_string(vtodo));
+ serv_puts("000");
+
+ /* Probably not necessary; the server will see the UID
+ * of the object and delete the old one anyway, but
+ * just in case...
+ */
+ delete_existing = 1;
+ }
+ }
+
+ /*
+ * If the user clicked 'Delete' then explicitly delete the message.
+ */
+ if (!strcasecmp(bstr("sc"), "Delete")) {
+ delete_existing = 1;
+ }
+
+ if ( (delete_existing) && (msgnum > 0L) ) {
+ serv_printf("DELE %ld", atol(bstr("msgnum")));
+ serv_gets(buf);
+ }
+
+ if (created_new_vtodo) {
+ icalcomponent_free(vtodo);
+ }
+
+ /* Go back to the task list */
+ readloop("readfwd");
+}
+
+
+
+/*
+ * Code common to all display handlers. Given a message number and a MIME
+ * type, we load the message and hunt for that MIME type. If found, we load
+ * the relevant part, deserialize it into a libical component, filter it for
+ * the requested object type, and feed it to the specified handler.
+ *
+ */
+void display_using_handler(long msgnum,
+ char *mimetype,
+ icalcomponent_kind which_kind,
+ void (*callback)(icalcomponent *, long)
+ ) {
+ char buf[SIZ];
+ char mime_partnum[SIZ];
+ char mime_filename[SIZ];
+ char mime_content_type[SIZ];
+ char mime_disposition[SIZ];
+ int mime_length;
+ char relevant_partnum[SIZ];
+ char *relevant_source = NULL;
+ icalcomponent *cal, *c;
+
+ sprintf(buf, "MSG0 %ld|1", msgnum); /* ask for headers only */
+ serv_puts(buf);
+ serv_gets(buf);
+ if (buf[0] != '1') return;
+
+ while (serv_gets(buf), strcmp(buf, "000")) {
+ if (!strncasecmp(buf, "part=", 5)) {
+ extract(mime_filename, &buf[5], 1);
+ extract(mime_partnum, &buf[5], 2);
+ extract(mime_disposition, &buf[5], 3);
+ extract(mime_content_type, &buf[5], 4);
+ mime_length = extract_int(&buf[5], 5);
+
+ if (!strcasecmp(mime_content_type, "text/calendar")) {
+ strcpy(relevant_partnum, mime_partnum);
+ }
+
+ }
+ }
+
+ if (strlen(relevant_partnum) > 0) {
+ relevant_source = load_mimepart(msgnum, relevant_partnum);
+ if (relevant_source != NULL) {
+
+ cal = icalcomponent_new_from_string(relevant_source);
+ if (cal != NULL) {
+
+ ical_dezonify(cal);
+
+ /* Simple components of desired type */
+ if (icalcomponent_isa(cal) == which_kind) {
+ callback(cal, msgnum);
+ }
+
+ /* Subcomponents of desired type */
+ for (c = icalcomponent_get_first_component(cal,
+ which_kind);
+ (c != 0);
+ c = icalcomponent_get_next_component(cal,
+ which_kind)) {
+ callback(c, msgnum);
+ }
+ icalcomponent_free(cal);
+ }
+ free(relevant_source);
+ }
+ }
+
+}
+
+void display_calendar(long msgnum) {
+ display_using_handler(msgnum, "text/calendar",
+ ICAL_VEVENT_COMPONENT,
+ display_individual_cal);
+}
+
+void display_task(long msgnum) {
+ display_using_handler(msgnum, "text/calendar",
+ ICAL_VTODO_COMPONENT,
+ display_individual_cal);
+}
+
+void display_edit_task(void) {
+ long msgnum = 0L;
+
+ /* Force change the room if we have to */
+ if (strlen(bstr("taskrm")) > 0) {
+ gotoroom(bstr("taskrm"));
+ }
+
+ msgnum = atol(bstr("msgnum"));
+ if (msgnum > 0L) {
+ /* existing task */
+ display_using_handler(msgnum, "text/calendar",
+ ICAL_VTODO_COMPONENT,
+ display_edit_individual_task);
+ }
+ else {
+ /* new task */
+ display_edit_individual_task(NULL, 0L);
+ }
+}
+
+void save_task(void) {
+ long msgnum = 0L;
+
+ msgnum = atol(bstr("msgnum"));
+ if (msgnum > 0L) {
+ display_using_handler(msgnum, "text/calendar",
+ ICAL_VTODO_COMPONENT,
+ save_individual_task);
+ }
+ else {
+ save_individual_task(NULL, 0L);
+ }
+}
+
+void display_edit_event(void) {
+ long msgnum = 0L;
+
+ msgnum = atol(bstr("msgnum"));
+ if (msgnum > 0L) {
+ /* existing event */
+ display_using_handler(msgnum, "text/calendar",
+ ICAL_VEVENT_COMPONENT,
+ display_edit_individual_event);
+ }
+ else {
+ /* new event */
+ display_edit_individual_event(NULL, 0L);
+ }
+}
+
+void save_event(void) {
+ long msgnum = 0L;
+
+ msgnum = atol(bstr("msgnum"));
+
+ if (msgnum > 0L) {
+ display_using_handler(msgnum, "text/calendar",
+ ICAL_VEVENT_COMPONENT,
+ save_individual_event);
+ }
+ else {
+ save_individual_event(NULL, 0L);
+ }
+}
+
+
+
+
+
+/*
+ * freebusy display (for client software)
+ */
+void do_freebusy(char *req) {
+ char who[SIZ];
+ char buf[SIZ];
+ char *fb;
+
+ extract_token(who, req, 1, ' ');
+ if (!strncasecmp(who, "/freebusy/", 10)) {
+ strcpy(who, &who[10]);
+ }
+ unescape_input(who);
+
+ if ( (!strcasecmp(&who[strlen(who)-4], ".vcf"))
+ || (!strcasecmp(&who[strlen(who)-4], ".vfb")) ) {
+ who[strlen(who)-4] = 0;
+ }
+
+ lprintf(9, "freebusy requested for <%s>\n", who);
+ serv_printf("ICAL freebusy|%s", who);
+ serv_gets(buf);
+
+ if (buf[0] != '1') {
+ wprintf("HTTP/1.0 404 %s\n", &buf[4]);
+ output_headers(0, 0, 0, 0, 0, 0, 0);
+ wprintf("Content-Type: text/plain\n");
+ wprintf("\n");
+ wprintf("%s\n", &buf[4]);
+ return;
+ }
+
+ fb = read_server_text();
+ http_transmit_thing(fb, strlen(fb), "text/calendar", 0);
+ free(fb);
+}
+
+
+
+#endif /* WEBCIT_WITH_CALENDAR_SERVICE */