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content path overrides: allow single dots and enforce max-lengths

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Allow a dot as long as its not followed by another dot and enforce
max component and (a reduced) max path length checking already at
schema level.

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
This commit is contained in:
Thomas Lamprecht
2023-03-20 15:11:40 +01:00
parent a3c30c6871
commit 13e1af437a
1 changed files with 8 additions and 2 deletions
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8
PVE/Storage/Plugin.pm
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@ -355,9 +355,15 @@ PVE::JSONSchema::register_format('pve-dir-override', \&verify_dir_override);
sub verify_dir_override { sub verify_dir_override {
my ($value, $noerr) = @_; my ($value, $noerr) = @_;
if ($value =~ m/^([a-z]+)=[^.]+$/ && verify_content($1, $noerr)) { if ($value =~ m/^([a-z]+)=([^.]*(?:\.?[^.]+)+)$/) {
my ($content_type, $relative_path) = ($1, $2);
if (verify_content($content_type, $noerr)) {
# linux has 4k max-path, but limit total length to lower as its concat'd for full path
if (length($relative_path) < 1023 && !(grep { length($_) >= 255 } split('/', $relative_path))) {
return $value; return $value;
} }
}
}
return undef if $noerr; return undef if $noerr;
die "invalid override '$value'\n"; die "invalid override '$value'\n";