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swaybar: fix loading of malformed icon theme

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If the icon index.theme contained a key-value pair without a preceding
group header, entry_handler() would be called with a zero pointer and
lead to a segfault.
Set the error flag and break on such malformed files.
This commit is contained in:
Stephan Hilb 2019-03-13 21:32:02 +01:00 committed by Drew DeVault
parent acdb4ed7a3
commit d64e8ba946
1 changed files with 4 additions and 0 deletions
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4
swaybar/tray/icon.c
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@ -243,6 +243,10 @@ static struct icon_theme *read_theme_file(char *basedir, char *theme_name) {
free(group);
group = strdup(&line[1]);
} else { // key-value pair
if (!group) {
error = true;
break;
}
// check well-formed
int eok = 0;
for (; isalnum(line[eok]) || line[eok] == '-'; ++eok) {} // TODO locale?