int icalgauge_compare(icalgauge* gauge,icalcomponent* comp)
{
icalcomponent *inner;
int local_pass = 0;
int last_clause = 1, this_clause = 1;
pvl_elem e;
icalcomponent_kind kind;
icalproperty *rrule;
int compare_recur = 0;
icalerror_check_arg_rz( (comp!=0), "comp");
icalerror_check_arg_rz( (gauge!=0), "gauge");
if (gauge == 0 || comp == 0) return 0;
inner = icalcomponent_get_first_real_component(comp);
if(inner == 0){
/* Wally Yau: our component is not always wrapped with
* a <VCALENDAR>. It's not an error.
* icalerror_set_errno(ICAL_MALFORMEDDATA_ERROR);
* return 0; */
kind = icalcomponent_isa(comp);
if(kind == ICAL_VEVENT_COMPONENT ||
kind == ICAL_VTODO_COMPONENT ||
kind == ICAL_VJOURNAL_COMPONENT ||
kind == ICAL_VQUERY_COMPONENT ||
kind == ICAL_VAGENDA_COMPONENT){
inner = comp;
}
else {
icalerror_set_errno(ICAL_MALFORMEDDATA_ERROR);
return 0;
}
inner = comp;
}
/* Check that this component is one of the FROM types */
local_pass = 0;
for(e = pvl_head(gauge->from);e!=0;e=pvl_next(e)){
icalcomponent_kind k = (icalcomponent_kind)pvl_data(e);
if(k == icalcomponent_isa(inner)){
local_pass=1;
}
}
if(local_pass == 0){
return 0;
}
/**** Check each where clause against the component ****/
for(e = pvl_head(gauge->where);e!=0;e=pvl_next(e)){
struct icalgauge_where *w = pvl_data(e);
icalcomponent *sub_comp;
icalvalue *v;
icalproperty *prop;
icalvalue_kind vk;
if(w->prop == ICAL_NO_PROPERTY || w->value == 0){
icalerror_set_errno(ICAL_INTERNAL_ERROR);
return 0;
}
/* First, create a value from the gauge */
vk = icalenum_property_kind_to_value_kind(w->prop);
if(vk == ICAL_NO_VALUE){
icalerror_set_errno(ICAL_INTERNAL_ERROR);
return 0;
}
if (w->compare == ICALGAUGECOMPARE_ISNULL || w->compare == ICALGAUGECOMPARE_ISNOTNULL)
v = icalvalue_new(vk);
else
v = icalvalue_new_from_string(vk,w->value);
if (v == 0){
/* Keep error set by icalvalue_from-string*/
return 0;
}
/* Now find the corresponding property in the component,
descending into a sub-component if necessary */
if(w->comp == ICAL_NO_COMPONENT){
sub_comp = inner;
} else {
sub_comp = icalcomponent_get_first_component(inner,w->comp);
if(sub_comp == 0){
return 0;
}
}
/* check if it is a recurring */
rrule = icalcomponent_get_first_property(sub_comp,ICAL_RRULE_PROPERTY);
if (gauge->expand
&& rrule) {
if (w->prop == ICAL_DTSTART_PROPERTY ||
w->prop == ICAL_DTEND_PROPERTY ||
w->prop == ICAL_DUE_PROPERTY){
/** needs to use recurrence-id to do comparison */
compare_recur = 1;
}
}
this_clause = 0;
local_pass = (w->compare == ICALGAUGECOMPARE_ISNULL) ? 1 : 0;
for(prop = icalcomponent_get_first_property(sub_comp,w->prop);
prop != 0;
prop = icalcomponent_get_next_property(sub_comp,w->prop)){
icalvalue* prop_value;
icalgaugecompare relation;
if (w->compare == ICALGAUGECOMPARE_ISNULL) {
local_pass = 0;
break;
}
if (w->compare == ICALGAUGECOMPARE_ISNOTNULL) {
local_pass = 1;
break;
}
if (compare_recur) {
icalproperty *p = icalcomponent_get_first_property(sub_comp, ICAL_RECURRENCEID_PROPERTY);
prop_value = icalproperty_get_value(p);
}
else /* prop value from this component */
prop_value = icalproperty_get_value(prop);
relation = (icalgaugecompare)icalvalue_compare(prop_value,v);
if (relation == w->compare){
local_pass++;
} else if (w->compare == ICALGAUGECOMPARE_LESSEQUAL &&
( relation == ICALGAUGECOMPARE_LESS ||
relation == ICALGAUGECOMPARE_EQUAL)) {
local_pass++;
} else if (w->compare == ICALGAUGECOMPARE_GREATEREQUAL &&
( relation == ICALGAUGECOMPARE_GREATER ||
relation == ICALGAUGECOMPARE_EQUAL)) {
local_pass++;
} else if (w->compare == ICALGAUGECOMPARE_NOTEQUAL &&
( relation == ICALGAUGECOMPARE_GREATER ||
relation == ICALGAUGECOMPARE_LESS)) {
local_pass++;
} else {
local_pass = 0;
}
}
this_clause = local_pass > 0 ? 1 : 0;
/* Now look at the logic operator for this clause to see how
the value should be merge with the previous clause */
if(w->logic == ICALGAUGELOGIC_AND){
last_clause = this_clause && last_clause;
} else if(w->logic == ICALGAUGELOGIC_OR) {
last_clause = this_clause || last_clause;
} else {
last_clause = this_clause;
}
icalvalue_free(v);
}/**** check next one in where clause ****/
return last_clause;
}
icalcomponent *icalparser_add_line(icalparser *parser, char *line)
{
char *str;
char *end;
int pcount = 0;
int vcount = 0;
icalproperty *prop;
icalproperty_kind prop_kind;
icalvalue *value;
icalvalue_kind value_kind = ICAL_NO_VALUE;
icalerror_check_arg_rz((parser != 0), "parser");
if (line == 0) {
parser->state = ICALPARSER_ERROR;
return 0;
}
if (line_is_blank(line) == 1) {
return 0;
}
/* Begin by getting the property name at the start of the line. The
property name may end up being "BEGIN" or "END" in which case it
is not really a property, but the marker for the start or end of
a component */
end = 0;
str = parser_get_prop_name(line, &end);
if (str == 0 || *str == '\0') {
/* Could not get a property name */
icalcomponent *tail = pvl_data(pvl_tail(parser->components));
if (tail) {
insert_error(
tail, line,
"Got a data line, but could not find a property name or component begin tag",
ICAL_XLICERRORTYPE_COMPONENTPARSEERROR);
}
tail = 0;
parser->state = ICALPARSER_ERROR;
icalmemory_free_buffer(str);
str = NULL;
return 0;
}
/**********************************************************************
* Handle begin and end of components
**********************************************************************/
/* If the property name is BEGIN or END, we are actually
starting or ending a new component */
if (strcasecmp(str, "BEGIN") == 0) {
icalcomponent *c;
icalcomponent_kind comp_kind;
parser->level++;
icalmemory_free_buffer(str);
str = parser_get_next_value(end, &end, value_kind);
comp_kind = icalenum_string_to_component_kind(str);
c = icalcomponent_new(comp_kind);
if (c == 0) {
c = icalcomponent_new(ICAL_XLICINVALID_COMPONENT);
insert_error(c, str, "Parse error in component name",
ICAL_XLICERRORTYPE_COMPONENTPARSEERROR);
}
pvl_push(parser->components, c);
parser->state = ICALPARSER_BEGIN_COMP;
icalmemory_free_buffer(str);
str = NULL;
return 0;
} else if (strcasecmp(str, "END") == 0) {
icalcomponent *tail;
parser->level--;
icalmemory_free_buffer(str);
str = parser_get_next_value(end, &end, value_kind);
/* Pop last component off of list and add it to the second-to-last */
parser->root_component = pvl_pop(parser->components);
tail = pvl_data(pvl_tail(parser->components));
if (tail != 0) {
icalcomponent_add_component(tail, parser->root_component);
}
tail = 0;
icalmemory_free_buffer(str);
str = NULL;
if (parser->level < 0) {
// Encountered an END before any BEGIN, this must be invalid data
icalerror_warn("Encountered END before BEGIN");
parser->state = ICALPARSER_ERROR;
parser->level = 0;
return 0;
} else if (parser->level == 0) {
/* Return the component if we are back to the 0th level */
icalcomponent *rtrn;
if (pvl_count(parser->components) != 0) {
/* There are still components on the stack -- this means
that one of them did not have a proper "END" */
pvl_push(parser->components, parser->root_component);
(void)icalparser_clean(parser); /* may reset parser->root_component */
}
assert(pvl_count(parser->components) == 0);
parser->state = ICALPARSER_SUCCESS;
rtrn = parser->root_component;
parser->root_component = 0;
return rtrn;
} else {
parser->state = ICALPARSER_END_COMP;
return 0;
}
}
/* There is no point in continuing if we have not seen a
component yet */
if (pvl_data(pvl_tail(parser->components)) == 0) {
parser->state = ICALPARSER_ERROR;
icalmemory_free_buffer(str);
str = NULL;
return 0;
}
/**********************************************************************
* Handle property names
**********************************************************************/
/* At this point, the property name really is a property name,
(Not a component name) so make a new property and add it to
the component */
prop_kind = icalproperty_string_to_kind(str);
prop = icalproperty_new(prop_kind);
if (prop != 0) {
icalcomponent *tail = pvl_data(pvl_tail(parser->components));
if (prop_kind == ICAL_X_PROPERTY) {
icalproperty_set_x_name(prop, str);
}
icalcomponent_add_property(tail, prop);
/* Set the value kind for the default for this type of
property. This may be re-set by a VALUE parameter */
value_kind = icalproperty_kind_to_value_kind(icalproperty_isa(prop));
} else {
icalcomponent *tail = pvl_data(pvl_tail(parser->components));
insert_error(tail, str, "Parse error in property name",
ICAL_XLICERRORTYPE_PROPERTYPARSEERROR);
tail = 0;
parser->state = ICALPARSER_ERROR;
icalmemory_free_buffer(str);
str = NULL;
return 0;
}
icalmemory_free_buffer(str);
str = NULL;
/**********************************************************************
* Handle parameter values
**********************************************************************/
/* Now, add any parameters to the last property */
while (pcount < MAXIMUM_ALLOWED_PARAMETERS) {
if (*(end - 1) == ':') {
/* if the last separator was a ":" and the value is a
URL, icalparser_get_next_parameter will find the
':' in the URL, so better break now. */
break;
}
icalmemory_free_buffer(str);
str = parser_get_next_parameter(end, &end);
strstriplt(str);
if (str != 0) {
char *name_heap = 0;
char *pvalue_heap = 0;
char name_stack[TMP_BUF_SIZE];
char pvalue_stack[TMP_BUF_SIZE];
char *name = name_stack;
char *pvalue = pvalue_stack;
icalparameter *param = 0;
icalparameter_kind kind;
icalcomponent *tail = pvl_data(pvl_tail(parser->components));
if (!parser_get_param_name_stack(str, name_stack, sizeof(name_stack),
pvalue_stack, sizeof(pvalue_stack))) {
name_heap = parser_get_param_name_heap(str, &pvalue_heap);
name = name_heap;
pvalue = pvalue_heap;
if (name_heap == 0) {
/* 'tail' defined above */
insert_error(tail, str, "Cant parse parameter name",
ICAL_XLICERRORTYPE_PARAMETERNAMEPARSEERROR);
tail = 0;
break;
}
}
kind = icalparameter_string_to_kind(name);
if (kind == ICAL_X_PARAMETER) {
param = icalparameter_new(ICAL_X_PARAMETER);
if (param != 0) {
icalparameter_set_xname(param, name);
icalparameter_set_xvalue(param, pvalue);
}
} else if (kind == ICAL_IANA_PARAMETER) {
ical_unknown_token_handling tokHandlingSetting =
ical_get_unknown_token_handling_setting();
if (tokHandlingSetting == ICAL_DISCARD_TOKEN) {
if (name_heap) {
icalmemory_free_buffer(name_heap);
name_heap = 0;
}
if (pvalue_heap) {
icalmemory_free_buffer(pvalue_heap);
pvalue_heap = 0;
}
continue;
}
param = icalparameter_new(ICAL_IANA_PARAMETER);
if (param != 0) {
icalparameter_set_xname(param, name);
icalparameter_set_xvalue(param, pvalue);
}
} else if (kind == ICAL_TZID_PARAMETER && *(end - 1) != ';') {
/*
Special case handling for TZID to work around invalid incoming data.
For example, Google Calendar will send back stuff like this:
DTSTART;TZID=GMT+05:30:20120904T020000
In this case we read to the next semicolon or the last colon rather
than the first colon. This way the TZID will become GMT+05:30 rather
than trying to parse the date-time as 30:20120904T020000.
This also handles properties that look like this:
DTSTART;TZID=GMT+05:30;VALUE=DATE-TIME:20120904T020000
*/
char *lastColon = 0;
char *nextColon = end;
char *nextSemicolon = parser_get_next_char(';', end, 1);
/* Find the last colon in the line */
do {
nextColon = parser_get_next_char(':', nextColon, 1);
if (nextColon) {
lastColon = nextColon;
}
} while (nextColon);
if (lastColon && nextSemicolon && nextSemicolon < lastColon) {
/*
Ensures that we don't read past a semicolon
Handles the following line:
DTSTART;TZID=GMT+05:30;VALUE=DATE-TIME:20120904T020000
*/
lastColon = nextSemicolon;
}
/*
Rebuild str so that it includes everything up to the next semicolon
or the last colon. So given the above example, str will go from
"TZID=GMT+05" to "TZID=GMT+05:30"
*/
if (lastColon && *(lastColon + 1) != 0) {
char *strStart = line + strlen(name) + 2;
end = lastColon + 1;
icalmemory_free_buffer(str);
str = make_segment(strStart, end - 1);
}
/* Reparse the parameter name and value with the new segment */
if (!parser_get_param_name_stack(str, name_stack, sizeof(name_stack),
pvalue_stack, sizeof(pvalue_stack))) {
if (pvalue_heap) {
icalmemory_free_buffer(pvalue_heap);
pvalue_heap = 0;
pvalue = 0;
}
if (name_heap) {
icalmemory_free_buffer(name_heap);
name = 0;
}
name_heap = parser_get_param_name_heap(str, &pvalue_heap);
pvalue = pvalue_heap;
}
param = icalparameter_new_from_value_string(kind, pvalue);
} else if (kind != ICAL_NO_PARAMETER) {
param = icalparameter_new_from_value_string(kind, pvalue);
} else {
/* Error. Failed to parse the parameter */
/* 'tail' defined above */
/* Change for mozilla */
/* have the option of being flexible towards unsupported parameters */
#if ICAL_ERRORS_ARE_FATAL == 1
insert_error(tail, str, "Cant parse parameter name",
ICAL_XLICERRORTYPE_PARAMETERNAMEPARSEERROR);
tail = 0;
parser->state = ICALPARSER_ERROR;
if (pvalue_heap) {
icalmemory_free_buffer(pvalue_heap);
pvalue = 0;
}
if (name_heap) {
icalmemory_free_buffer(name_heap);
name = 0;
}
icalmemory_free_buffer(str);
str = NULL;
return 0;
#else
if (name_heap) {
icalmemory_free_buffer(name_heap);
name_heap = 0;
}
if (pvalue_heap) {
icalmemory_free_buffer(pvalue_heap);
pvalue_heap = 0;
}
icalmemory_free_buffer(str);
str = NULL;
continue;
#endif
}
if (pvalue_heap) {
icalmemory_free_buffer(pvalue_heap);
pvalue_heap = 0;
}
if (name_heap) {
icalmemory_free_buffer(name_heap);
name_heap = 0;
}
if (param == 0) {
/* 'tail' defined above */
insert_error(tail, str, "Cant parse parameter value",
ICAL_XLICERRORTYPE_PARAMETERVALUEPARSEERROR);
tail = 0;
parser->state = ICALPARSER_ERROR;
icalmemory_free_buffer(str);
str = NULL;
continue;
}
/* If it is a VALUE parameter, set the kind of value */
if (icalparameter_isa(param) == ICAL_VALUE_PARAMETER) {
value_kind =
(icalvalue_kind)icalparameter_value_to_value_kind(
icalparameter_get_value(param));
if (!icalproperty_value_kind_is_valid(prop_kind, value_kind)) {
/* Ooops, invalid VALUE parameter, so reset the value_kind */
const char *err_str = "Invalid VALUE type for property";
const char *prop_str = icalproperty_kind_to_string(prop_kind);
size_t tmp_buf_len = strlen(err_str) + strlen(prop_str) + 2;
char *tmp_buf = icalmemory_tmp_buffer(tmp_buf_len);
snprintf(tmp_buf, tmp_buf_len, "%s %s", err_str, prop_str);
insert_error(tail, str, tmp_buf,
ICAL_XLICERRORTYPE_PARAMETERVALUEPARSEERROR);
value_kind = icalproperty_kind_to_value_kind(prop_kind);
icalparameter_free(param);
tail = 0;
parser->state = ICALPARSER_ERROR;
icalmemory_free_buffer(str);
str = NULL;
pcount++;
continue;
}
}
/* Everything is OK, so add the parameter */
icalproperty_add_parameter(prop, param);
tail = 0;
icalmemory_free_buffer(str);
str = NULL;
pcount++;
} else {
/* str is NULL */
break;
}
} /* while(1) */
/**********************************************************************
* Handle values
**********************************************************************/
/* Look for values. If there are ',' characters in the values,
then there are multiple values, so clone the current
parameter and add one part of the value to each clone */
vcount = 0;
while (vcount < MAXIMUM_ALLOWED_MULTIPLE_VALUES) {
/* Only some properties can have multiple values. This list was taken
from rfc5545. Also added the x-properties, because the spec actually
says that commas should be escaped. For x-properties, other apps may
depend on that behaviour
*/
icalmemory_free_buffer(str);
str = NULL;
if (icalproperty_value_kind_is_multivalued(prop_kind, &value_kind)) {
str = parser_get_next_value(end, &end, value_kind);
} else {
str = icalparser_get_value(end, &end, value_kind);
}
strstriplt(str);
if (str != 0) {
if (vcount > 0) {
/* Actually, only clone after the second value */
icalproperty *clone = icalproperty_clone(prop);
icalcomponent *tail = pvl_data(pvl_tail(parser->components));
icalcomponent_add_property(tail, clone);
prop = clone;
tail = 0;
}
value = icalvalue_new_from_string(value_kind, str);
/* Don't add properties without value */
if (value == 0) {
char temp[200]; /* HACK */
icalproperty_kind prop_kind = icalproperty_isa(prop);
icalcomponent *tail = pvl_data(pvl_tail(parser->components));
snprintf(temp, sizeof(temp),
"Can't parse as %s value in %s property. Removing entire property",
icalvalue_kind_to_string(value_kind),
icalproperty_kind_to_string(prop_kind));
insert_error(tail, str, temp, ICAL_XLICERRORTYPE_VALUEPARSEERROR);
/* Remove the troublesome property */
icalcomponent_remove_property(tail, prop);
icalproperty_free(prop);
prop = 0;
tail = 0;
parser->state = ICALPARSER_ERROR;
icalmemory_free_buffer(str);
str = NULL;
return 0;
} else {
vcount++;
icalproperty_set_value(prop, value);
}
icalmemory_free_buffer(str);
str = NULL;
} else {
#if ICAL_ALLOW_EMPTY_PROPERTIES
/* Don't replace empty properties with an error.
Set an empty length string (not null) as the value instead */
if (vcount == 0) {
icalproperty_set_value(prop, icalvalue_new(ICAL_NO_VALUE));
}
break;
#else
if (vcount == 0) {
char temp[200]; /* HACK */
icalproperty_kind prop_kind = icalproperty_isa(prop);
icalcomponent *tail = pvl_data(pvl_tail(parser->components));
snprintf(temp, sizeof(temp), "No value for %s property. Removing entire property",
icalproperty_kind_to_string(prop_kind));
insert_error(tail, str, temp, ICAL_XLICERRORTYPE_VALUEPARSEERROR);
/* Remove the troublesome property */
icalcomponent_remove_property(tail, prop);
icalproperty_free(prop);
prop = 0;
tail = 0;
parser->state = ICALPARSER_ERROR;
return 0;
} else {
break;
}
#endif
}
}
/****************************************************************
* End of component parsing.
*****************************************************************/
if (pvl_data(pvl_tail(parser->components)) == 0 && parser->level == 0) {
/* HACK. Does this clause ever get executed? */
parser->state = ICALPARSER_SUCCESS;
assert(0);
return parser->root_component;
} else {
parser->state = ICALPARSER_IN_PROGRESS;
return 0;
}
}
