[pve-devel] [PATCH v2 manager] api: create pool: force first character to be a letter for new pools

[Fiona Ebner]

Currently, the first character can also be a digit, '.', '-', or '_'.
Almost all other configuration IDs in Proxmox VE require starting with
a letter, so force this for new pool names too.

A pool with ID '0' can be added, but not parsed, because it will
evaluate to false in PVE/AccessControl.pm's parse_user_config():

> if (!verify_poolname($pool, 1)) {
>     warn "user config - ignore pool '$pool' - invalid characters in pool name\n";
>     next;
> }

It's likely that it would cause other issues as well if properly
handled there.

Signed-off-by: Fiona Ebner <f.ebner at proxmox.com>
---

Breaking change intended for Proxmox VE 9!

Changes in v2:
* Different approach, force new pools to start with a letter.

 PVE/API2/Pool.pm | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/PVE/API2/Pool.pm b/PVE/API2/Pool.pm
index 54e74455..4b5e534c 100644
--- a/PVE/API2/Pool.pm
+++ b/PVE/API2/Pool.pm
@@ -184,10 +184,13 @@ __PACKAGE__->register_method ({
 	    my $pool = $param->{poolid};
 
 	    die "pool '$pool' already exists\n" if $usercfg->{pools}->{$pool};
-	    if ($pool =~ m!^(.*)/[^/]+$!) {
-		my $parent = $1;
+	    if ($pool =~ m!^(.*)/([^/]+)$!) {
+		my ($parent, $leaf) = ($1, $2);
 		die "parent '$parent' of pool '$pool' does not exist\n"
 		    if !defined($usercfg->{pools}->{$parent});
+		die "pool name must start with a letter\n" if $leaf !~ m!^[A-Za-z]!;
+	    } else {
+		die "pool name must start with a letter\n" if $pool !~ m!^[A-Za-z]!;
 	    }
 
 	    $usercfg->{pools}->{$pool} = {
-- 
2.39.5