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-rw-r--r--libical/src/libicalss/icalclassify.c701
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diff --git a/libical/src/libicalss/icalclassify.c b/libical/src/libicalss/icalclassify.c
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--- a/libical/src/libicalss/icalclassify.c
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-/* -*- Mode: C -*-
- ======================================================================
- FILE: icalclassify.c
- CREATOR: ebusboom 23 aug 2000
-
- $Id$
- $Locker$
-
- (C) COPYRIGHT 2000, Eric Busboom, http://www.softwarestudio.org
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of either:
-
- The LGPL as published by the Free Software Foundation, version
- 2.1, available at: http://www.fsf.org/copyleft/lesser.html
-
- Or:
-
- The Mozilla Public License Version 1.0. You may obtain a copy of
- the License at http://www.mozilla.org/MPL/
-
-
- ======================================================================*/
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include "ical.h"
-#include "icalclassify.h"
-#include "icalmemory.h"
-#include <ctype.h> /* For tolower() */
-#include <string.h> /* for index() */
-#include <stdlib.h> /* for malloc and free */
-
-
-
-struct icalclassify_parts {
- icalcomponent *c;
- icalproperty_method method;
- char* organizer;
- icalparameter_partstat reply_partstat;
- char* reply_attendee;
- char* uid;
- int sequence;
- struct icaltimetype dtstamp;
- struct icaltimetype recurrence_id;
-};
-
-
-char* icalclassify_lowercase(const char* str)
-{
- char* p = 0;
- char* new = icalmemory_strdup(str);
-
- if(str ==0){
- return 0;
- }
-
- for(p = new; *p!=0; p++){
- *p = tolower(*p);
- }
-
- return new;
-}
-
-/* Return a set of components that intersect in time with comp. For
-component X and Y to intersect:
- X.DTSTART < Y.DTEND && X.DTEND > Y.DTSTART
-*/
-
-
-icalcomponent* icalclassify_find_overlaps(icalset* set, icalcomponent* comp)
-{
- icalcomponent *return_set;
- icalcomponent *c;
- struct icaltime_span span,compspan;
-
- icalerror_clear_errno();
- compspan = icalcomponent_get_span(comp);
-
- if(icalerrno != ICAL_NO_ERROR){
- return 0;
- }
-
-
- return_set = icalcomponent_new(ICAL_XROOT_COMPONENT);
-
- for(c = icalset_get_first_component(set);
- c != 0;
- c = icalset_get_next_component(set)){
-
- icalerror_clear_errno();
-
- span = icalcomponent_get_span(c);
-
- if(icalerrno != ICAL_NO_ERROR){
- continue;
- }
-
- if (compspan.start < span.end &&
- compspan.end > span.start){
-
- icalcomponent *clone = icalcomponent_new_clone(c);
-
- icalcomponent_add_component(return_set,clone);
- }
- }
-
- if(icalcomponent_count_components(return_set,ICAL_ANY_COMPONENT) !=0){
- return return_set;
- } else {
- icalcomponent_free(return_set);
- return 0;
- }
-}
-
-
-
-icalparameter_partstat icalclassify_find_attendee(icalcomponent *c,
- const char* attendee)
-{
- icalproperty *p;
- char* lattendee = icalclassify_lowercase(attendee);
- char* upn = strchr(lattendee,':');
- icalcomponent *inner = icalcomponent_get_first_real_component(c);
-
- for(p = icalcomponent_get_first_property(inner,ICAL_ATTENDEE_PROPERTY);
- p != 0;
- p = icalcomponent_get_next_property(inner,ICAL_ATTENDEE_PROPERTY))
- {
- const char* this_attendee
- = icalclassify_lowercase(icalproperty_get_attendee(p));
- char* this_upn = strchr(this_attendee,':');
-
- if(strcmp(this_upn,upn)==0){
-
- icalparameter *param = icalproperty_get_first_parameter(p,
- ICAL_PARTSTAT_PARAMETER);
- if (param != 0){
- free(lattendee);
- free((void*)this_attendee);
- return icalparameter_get_partstat(param);
- }
-
- }
-
- }
-
- free(lattendee);
- return ICAL_PARTSTAT_NONE;
-
-}
-
-void icalssutil_free_parts(struct icalclassify_parts *parts)
-{
- if(parts == 0){
- return;
- }
-
- if(parts->organizer != 0){
- free(parts->organizer);
- }
-
- if(parts->uid != 0){
- free(parts->uid);
- }
-
- if(parts->reply_attendee){
- free(parts->reply_attendee);
- }
-}
-
-void icalssutil_get_parts(icalcomponent* c,
- struct icalclassify_parts* parts)
-{
- icalproperty *p;
- icalcomponent *inner;
-
- memset(parts,0,sizeof(struct icalclassify_parts));
-
- parts->method = ICAL_METHOD_NONE;
- parts->sequence = 0;
- parts->reply_partstat = ICAL_PARTSTAT_NONE;
-
- if(c == 0){
- return;
- }
-
- parts->c = c;
-
- p = icalcomponent_get_first_property(c,ICAL_METHOD_PROPERTY);
- if(p!=0){
- parts->method = icalproperty_get_method(p);
- }
-
- inner = icalcomponent_get_first_real_component(c);
-
- p = icalcomponent_get_first_property(inner,ICAL_ORGANIZER_PROPERTY);
- if(p!=0){
- parts->organizer = strdup(icalproperty_get_organizer(p));
- }
-
- p = icalcomponent_get_first_property(inner,ICAL_SEQUENCE_PROPERTY);
- if(p!=0){
- parts->sequence = icalproperty_get_sequence(p);
- }
-
- p = icalcomponent_get_first_property(inner,ICAL_UID_PROPERTY);
- if(p!=0){
- parts->uid = strdup(icalproperty_get_uid(p));
- }
-
- p = icalcomponent_get_first_property(inner,ICAL_RECURRENCEID_PROPERTY);
- if(p!=0){
- parts->recurrence_id = icalproperty_get_recurrenceid(p);
- }
-
- p = icalcomponent_get_first_property(inner,ICAL_DTSTAMP_PROPERTY);
- if(p!=0){
- parts->dtstamp = icalproperty_get_dtstamp(p);
- }
-
- if(parts->method==ICAL_METHOD_REPLY){
- icalparameter *param;
- p = icalcomponent_get_first_property(inner,ICAL_ATTENDEE_PROPERTY);
-
- if(p!=0){
-
- param = icalproperty_get_first_parameter(p,ICAL_PARTSTAT_PARAMETER);
-
- if(param != 0){
- parts->reply_partstat =
- icalparameter_get_partstat(param);
- }
-
- parts->reply_attendee = strdup(icalproperty_get_attendee(p));
- }
-
- }
-
-
-}
-
-
-int icalssutil_is_rescheduled(icalcomponent* a,icalcomponent* b)
-{
- icalproperty *p1,*p2;
- icalcomponent *i1,*i2;
- int i;
-
- icalproperty_kind kind_array[] = {
- ICAL_DTSTART_PROPERTY,
- ICAL_DTEND_PROPERTY,
- ICAL_DURATION_PROPERTY,
- ICAL_DUE_PROPERTY,
- ICAL_RRULE_PROPERTY,
- ICAL_RDATE_PROPERTY,
- ICAL_EXRULE_PROPERTY,
- ICAL_EXDATE_PROPERTY,
- ICAL_NO_PROPERTY
- };
-
- i1 = icalcomponent_get_first_real_component(a);
- i2 = icalcomponent_get_first_real_component(b);
-
- for(i =0; kind_array[i] != ICAL_NO_PROPERTY; i++){
- p1 = icalcomponent_get_first_property(i1,kind_array[i]);
- p2 = icalcomponent_get_first_property(i2,kind_array[i]);
-
- if( (p1!=0)^(p1!=0) ){
- /* Return true if the property exists in one component and not
- the other */
- return 1;
- }
-
- if(p1 && strcmp(icalproperty_as_ical_string(p1),
- icalproperty_as_ical_string(p2)) != 0){
- return 1;
- }
- }
-
- return 0;
-
-}
-
-#define icalclassify_pre \
- int rtrn =0;
-
-#define icalclassify_post \
- return rtrn;
-
-
-int icalclassify_publish_new(struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalclassify_pre;
-
- if(comp->method == ICAL_METHOD_PUBLISH &&
- match == 0){
- rtrn = 1;
- }
-
- icalclassify_post;
-
-}
-
-int icalclassify_publish_update(struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalclassify_pre;
-
- if(comp->method == ICAL_METHOD_PUBLISH &&
- match !=0 ){
- rtrn = 1;
- }
-
- icalclassify_post;
-
-}
-
-int icalclassify_publish_freebusy(struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalclassify_pre;
-
- if(comp->method == ICAL_METHOD_PUBLISH &&
- match == 0){
- rtrn = 1;
- }
-
- icalclassify_post;
-
-}
-
-
-int icalclassify_request_new(struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- /* Method is REQUEST, and there is no match */
-
- icalclassify_pre
-
- if(match->c==0 && comp->method == ICAL_METHOD_REQUEST){
- rtrn = 1;
- }
-
- icalclassify_post
-
-}
-
-int icalclassify_request_update(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- /* REQUEST method, Higher SEQUENCE than match, and all
- time-related properties are unchanged */
-
- icalclassify_pre
-
- if (match != 0 &&
- comp->sequence >= match->sequence &&
- !icalssutil_is_rescheduled(comp->c,match->c)){
- rtrn = 1;
- }
-
- icalclassify_post
-
-}
-
-int icalclassify_request_reschedule(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- /* REQUEST method, Higher SEQUENCE than match, and one or more
- time-related properties are changed */
- icalclassify_pre
-
- if (match->c != 0 &&
- comp->sequence > match->sequence &&
- icalssutil_is_rescheduled(comp->c,match->c)){
- rtrn = 1;
- }
-
- icalclassify_post
-
-}
-
-int icalclassify_request_delegate(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalclassify_pre
-
- if (match->c != 0 &&
- comp->sequence > match->sequence &&
- icalssutil_is_rescheduled(comp->c,match->c)){
- rtrn = 1;
- }
-
- icalclassify_post
-
-}
-
-int icalclassify_request_new_organizer(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- /* Organizer has changed between match and component */
- icalclassify_pre
-
- icalclassify_post
-
-}
-
-int icalclassify_request_status(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalclassify_pre
- icalclassify_post
-}
-
-int icalclassify_request_forward(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalclassify_pre
- icalclassify_post
-}
-
-int icalclassify_request_freebusy(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalclassify_pre
- icalclassify_post
-}
-
-int icalclassify_reply_accept(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalparameter_partstat partstat;
- icalclassify_pre;
-
- partstat = icalclassify_find_attendee(match->c,comp->reply_attendee);
-
- if(partstat != ICAL_PARTSTAT_NONE &&
- comp->reply_partstat == ICAL_PARTSTAT_ACCEPTED){
- rtrn = 1;
- }
-
- icalclassify_post
-}
-int icalclassify_reply_decline(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalparameter_partstat partstat;
- icalclassify_pre;
-
-
- partstat = icalclassify_find_attendee(match->c,comp->reply_attendee);
-
- if(partstat != ICAL_PARTSTAT_NONE &&
- comp->reply_partstat == ICAL_PARTSTAT_DECLINED){
- rtrn = 1;
- }
- icalclassify_post
-}
-int icalclassify_reply_crasher_accept(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalparameter_partstat partstat;
- icalclassify_pre;
-
-
- partstat = icalclassify_find_attendee(match->c,comp->reply_attendee);
-
- if(partstat == ICAL_PARTSTAT_NONE &&
- comp->reply_partstat == ICAL_PARTSTAT_ACCEPTED){
- rtrn = 1;
- }
- icalclassify_post
-}
-int icalclassify_reply_crasher_decline(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalparameter_partstat partstat;
- icalclassify_pre;
-
-
- partstat = icalclassify_find_attendee(match->c,comp->reply_attendee);
-
- if(partstat == ICAL_PARTSTAT_NONE &&
- comp->reply_partstat == ICAL_PARTSTAT_DECLINED){
- rtrn = 1;
- }
- icalclassify_post
-}
-int icalclassify_add_instance(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalclassify_pre
- if(comp->method == ICAL_METHOD_ADD){
- rtrn = 1;
- }
- icalclassify_post
-}
-int icalclassify_cancel_event(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalclassify_pre
- if(comp->method == ICAL_METHOD_CANCEL){
- rtrn = 1;
- }
- icalclassify_post
-}
-int icalclassify_cancel_instance(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalclassify_pre
- if(comp->method == ICAL_METHOD_CANCEL){
- rtrn = 1;
- }
- icalclassify_post
-}
-int icalclassify_cancel_all(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalclassify_pre
- if(comp->method == ICAL_METHOD_CANCEL){
- rtrn = 1;
- }
- icalclassify_post
-}
-int icalclassify_refesh(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalclassify_pre
- if(comp->method == ICAL_METHOD_REFRESH){
- rtrn = 1;
- }
- icalclassify_post
-}
-int icalclassify_counter(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalclassify_pre
- if(comp->method == ICAL_METHOD_COUNTER){
- rtrn = 1;
- }
- icalclassify_post
-}
-int icalclassify_delinecounter(
- struct icalclassify_parts *comp,
- struct icalclassify_parts *match,
- const char* user)
-{
- icalclassify_pre
-
- if(comp->method == ICAL_METHOD_DECLINECOUNTER){
- rtrn = 1;
- }
-
- icalclassify_post
-}
-
-struct icalclassify_map {
- icalproperty_method method;
- int (*fn)(struct icalclassify_parts *comp,struct icalclassify_parts *match, const char* user);
- ical_class class;
-} icalclassify_map[] =
-{ {ICAL_METHOD_PUBLISH,icalclassify_publish_new,ICAL_PUBLISH_NEW_CLASS},
- {ICAL_METHOD_PUBLISH,icalclassify_publish_update,ICAL_PUBLISH_UPDATE_CLASS},
- {ICAL_METHOD_PUBLISH,icalclassify_publish_freebusy,ICAL_PUBLISH_FREEBUSY_CLASS},
- {ICAL_METHOD_REQUEST,icalclassify_request_new,ICAL_REQUEST_NEW_CLASS},
- {ICAL_METHOD_REQUEST,icalclassify_request_update,ICAL_REQUEST_UPDATE_CLASS},
- {ICAL_METHOD_REQUEST,icalclassify_request_reschedule,ICAL_REQUEST_RESCHEDULE_CLASS},
- {ICAL_METHOD_REQUEST,icalclassify_request_delegate,ICAL_REQUEST_DELEGATE_CLASS},
- {ICAL_METHOD_REQUEST,icalclassify_request_new_organizer,ICAL_REQUEST_NEW_ORGANIZER_CLASS},
- {ICAL_METHOD_REQUEST,icalclassify_request_forward,ICAL_REQUEST_FORWARD_CLASS},
- {ICAL_METHOD_REQUEST,icalclassify_request_status,ICAL_REQUEST_STATUS_CLASS},
- {ICAL_METHOD_REQUEST,icalclassify_request_freebusy,ICAL_REQUEST_FREEBUSY_CLASS},
-
- {ICAL_METHOD_REPLY,icalclassify_reply_accept,ICAL_REPLY_ACCEPT_CLASS},
- {ICAL_METHOD_REPLY,icalclassify_reply_decline,ICAL_REPLY_DECLINE_CLASS},
- {ICAL_METHOD_REPLY,icalclassify_reply_crasher_accept,ICAL_REPLY_CRASHER_ACCEPT_CLASS},
- {ICAL_METHOD_REPLY,icalclassify_reply_crasher_decline,ICAL_REPLY_CRASHER_DECLINE_CLASS},
-
- {ICAL_METHOD_ADD,icalclassify_add_instance,ICAL_ADD_INSTANCE_CLASS},
-
- {ICAL_METHOD_CANCEL,icalclassify_cancel_event,ICAL_CANCEL_EVENT_CLASS},
- {ICAL_METHOD_CANCEL,icalclassify_cancel_instance,ICAL_CANCEL_INSTANCE_CLASS},
- {ICAL_METHOD_CANCEL,icalclassify_cancel_all,ICAL_CANCEL_ALL_CLASS},
-
- {ICAL_METHOD_REFRESH,icalclassify_refesh,ICAL_REFRESH_CLASS},
- {ICAL_METHOD_COUNTER,icalclassify_counter,ICAL_COUNTER_CLASS},
- {ICAL_METHOD_DECLINECOUNTER,icalclassify_delinecounter,ICAL_DECLINECOUNTER_CLASS},
- {ICAL_METHOD_NONE,0,ICAL_NO_CLASS}
-};
-
-
-ical_class icalclassify(icalcomponent* c,icalcomponent* match,
- const char* user)
-{
- icalcomponent *inner;
- icalproperty *p;
- icalproperty_method method;
- ical_class class = ICAL_UNKNOWN_CLASS;
-
- int i;
-
- struct icalclassify_parts comp_parts;
- struct icalclassify_parts match_parts;
-
- inner = icalcomponent_get_first_real_component(c);
-
- if (inner == 0) {
- return ICAL_NO_CLASS;
- }
-
- icalssutil_get_parts(c,&comp_parts);
- icalssutil_get_parts(match,&match_parts);
-
- /* Determine if the incoming component is obsoleted by the match */
- if(match != 0 && (
- comp_parts.method == ICAL_METHOD_REQUEST
- )){
- assert ( ! ((comp_parts.dtstamp.is_utc==1)^
- (match_parts.dtstamp.is_utc==1)));
-
- if( comp_parts.sequence<match_parts.sequence &&
- icaltime_compare(comp_parts.dtstamp,match_parts.dtstamp)>0)
- {
- /* comp has a smaller sequence and a later DTSTAMP */
- return ICAL_MISSEQUENCED_CLASS;
- }
-
- if( (comp_parts.sequence<match_parts.sequence )
- /*&&icaltime_compare(comp_parts.dtstamp,match_parts.dtstamp)<=0*/
- ||
- ( comp_parts.sequence == match_parts.sequence &&
- icaltime_compare(comp_parts.dtstamp,match_parts.dtstamp)<=0)){
-
- return ICAL_OBSOLETE_CLASS;
- }
-
- }
-
- p = icalcomponent_get_first_property(c,ICAL_METHOD_PROPERTY);
- if (p == 0) {
- return ICAL_UNKNOWN_CLASS;
- }
- method = icalproperty_get_method(p);
-
- for (i =0; icalclassify_map[i].method != ICAL_METHOD_NONE; i++){
- if(icalclassify_map[i].method == method){
- if( (*(icalclassify_map[i].fn))(&comp_parts,&match_parts,user)==1){
- class = icalclassify_map[i].class;
- break;
- }
- }
- }
-
- icalssutil_free_parts(&comp_parts);
- icalssutil_free_parts(&match_parts);
-
- return class;
-
-}