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[#68] Check basic ACL size

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Signed-off-by: Denis Kirillov <denis@nspcc.ru>
This commit is contained in:
Denis Kirillov 2022-09-20 16:37:54 +03:00 committed by Alex Vanin
parent 47691727d4
commit 09e8196ed4
2 changed files with 41 additions and 2 deletions
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4
handlers/containers.go
View file

@ -355,8 +355,8 @@ func createContainer(ctx context.Context, p *pool.Pool, stoken session.Container
request.BasicACL = defaultBasicACL
}
var basicACL acl.Basic
if err = basicACL.DecodeString(request.BasicACL); err != nil {
basicACL, err := decodeBasicACL(request.BasicACL)
if err != nil {
return cid.ID{}, fmt.Errorf("couldn't parse basic acl: %w", err)
}

39
handlers/util.go
View file

@ -6,11 +6,13 @@ import (
"fmt"
"math"
"strconv"
"strings"
"time"
objectv2 "github.com/nspcc-dev/neofs-api-go/v2/object"
sessionv2 "github.com/nspcc-dev/neofs-api-go/v2/session"
"github.com/nspcc-dev/neofs-rest-gw/gen/models"
"github.com/nspcc-dev/neofs-sdk-go/container/acl"
"github.com/nspcc-dev/neofs-sdk-go/object"
"github.com/nspcc-dev/neofs-sdk-go/pool"
)
@ -219,3 +221,40 @@ func formSessionTokenFromHeaders(principal *models.Principal, signature, key *st
Verb: verb,
}, nil
}
// decodeBasicACL is the same as DecodeString on acl.Basic but
// it also checks length for hex formatted acl.
func decodeBasicACL(input string) (acl.Basic, error) {
switch input {
case acl.NamePrivate:
return acl.Private, nil
case acl.NamePrivateExtended:
return acl.PrivateExtended, nil
case acl.NamePublicRO:
return acl.PublicRO, nil
case acl.NamePublicROExtended:
return acl.PublicROExtended, nil
case acl.NamePublicRW:
return acl.PublicRW, nil
case acl.NamePublicRWExtended:
return acl.PublicRWExtended, nil
case acl.NamePublicAppend:
return acl.PublicAppend, nil
case acl.NamePublicAppendExtended:
return acl.PublicAppendExtended, nil
default:
trimmedInput := strings.TrimPrefix(strings.ToLower(input), "0x")
if len(trimmedInput) != 8 {
return 0, fmt.Errorf("invalid basic ACL size: %s", input)
}
v, err := strconv.ParseUint(trimmedInput, 16, 32)
if err != nil {
return 0, fmt.Errorf("parse hex: %w", err)
}
var res acl.Basic
res.FromBits(uint32(v))
return res, nil
}
}