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Fix decoding of escaped characters in imported text

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Stick strictly to RFC 5545, 3.3.11, Text, for SUMMARY and DESCRIPTION.
Adresses Github issue #271.

Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk>
Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
This commit is contained in:
Lars Henriksen 2020-03-18 23:36:14 +01:00 committed by Lukas Fleischer
parent 1cb2691342
commit ffbf714c9e
3 changed files with 23 additions and 14 deletions
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31
src/ical.c
View File

@ -440,8 +440,9 @@ ical_store_apoint(char *mesg, char *note, long start, long dur,
}
/*
* Returns an allocated string representing the string given in argument once
* unformatted.
* Returns an allocated string representing the argument string with escaped
* characters decoded, or NULL on error.
* The string is assumed to be the value part of a SUMMARY or DESCRIPTION line.
*/
static char *ical_unformat_line(char *line)
{
@ -453,25 +454,29 @@ static char *ical_unformat_line(char *line)
switch (*p) {
case '\\':
switch (*(p + 1)) {
case 'N':
case 'n':
string_catf(&s, "%c", '\n');
p++;
break;
case 't':
string_catf(&s, "%c", '\t');
p++;
break;
case '\\':
case ';':
case ':':
case ',':
string_catf(&s, "%c", *(p + 1));
p++;
break;
default:
string_catf(&s, "%c", *p);
break;
mem_free(s.buf);
return NULL;
}
break;
case ',':
case ';':
/*
* No list or field separator allowed.
*/
mem_free(s.buf);
return NULL;
default:
string_catf(&s, "%c", *p);
break;
@ -928,8 +933,12 @@ static char *ical_read_summary(char *line, unsigned *noskipped,
}
/* Event summaries must not contain newlines. */
for (p = strchr(summary, '\n'); p; p = strchr(p, '\n'))
*p = ' ';
if (strchr(summary, '\n')) {
ical_log(log, item_type, itemline, _("line break in summary."));
(*noskipped)++;
mem_free(summary);
return NULL;
}
return summary;
}

4
test/data/ical-002.ical
View File

@ -8,12 +8,12 @@ END:VEVENT
BEGIN:VEVENT
DTSTART:20000101T000000
DURATION:P1DT1H1M1S
SUMMARY:One day, one hour, one minute and one second
SUMMARY:One day\, one hour\, one minute and one second
END:VEVENT
BEGIN:VEVENT
DTSTART:20000101T000000
DURATION:PT1H1M1S
SUMMARY:One hour, one minute and one second
SUMMARY:One hour\, one minute and one second
END:VEVENT
BEGIN:VEVENT
DTSTART:20000101T000000

2
test/data/ical-006.ical
View File

@ -56,7 +56,7 @@ DTSTART:20120601T150000
DURATION:PT5H10S
END:VEVENT
BEGIN:VEVENT
SUMMARY:5 hours, 30 minutes and 10 seconds
SUMMARY:5 hours\, 30 minutes and 10 seconds
DTSTART:20120601T150000
DURATION:PT5H30M10S
END:VEVENT