* [nft PATCH v2 1/2] doc: nft.8: Mention wildcard interface matching
@ 2020-02-10 11:14 Phil Sutter
2020-02-10 11:14 ` [nft PATCH v2 2/2] scanner: Extend asteriskstring definition Phil Sutter
2020-02-10 11:23 ` [nft PATCH v2 1/2] doc: nft.8: Mention wildcard interface matching Pablo Neira Ayuso
0 siblings, 2 replies; 4+ messages in thread
From: Phil Sutter @ 2020-02-10 11:14 UTC (permalink / raw)
To: Pablo Neira Ayuso; +Cc: netfilter-devel
Special meaning of asterisk in interface names wasn't described
anywhere.
Signed-off-by: Phil Sutter <phil@nwl.cc>
---
Changes since v1:
- Generalize sentence about escaping for literal asterisk character.
---
doc/primary-expression.txt | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/doc/primary-expression.txt b/doc/primary-expression.txt
index 94eccc20241a2..b5488790360dc 100644
--- a/doc/primary-expression.txt
+++ b/doc/primary-expression.txt
@@ -36,6 +36,13 @@ add such a rule, it will stop matching if the interface gets renamed and it
will match again in case interface gets deleted and later a new interface
with the same name is created.
+Like with iptables, wildcard matching on interface name prefixes is available for
+*iifname* and *oifname* matches by appending an asterisk (*) character. Note
+however that unlike iptables, nftables does not accept interface names
+consisting of the wildcard character only - users are supposed to just skip
+those always matching expressions. In order to match on literal asterisk
+character, one may escape it using backslash (\).
+
.Meta expression types
[options="header"]
|==================
--
2.24.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [nft PATCH v2 2/2] scanner: Extend asteriskstring definition
2020-02-10 11:14 [nft PATCH v2 1/2] doc: nft.8: Mention wildcard interface matching Phil Sutter
@ 2020-02-10 11:14 ` Phil Sutter
2020-02-10 11:23 ` Pablo Neira Ayuso
2020-02-10 11:23 ` [nft PATCH v2 1/2] doc: nft.8: Mention wildcard interface matching Pablo Neira Ayuso
1 sibling, 1 reply; 4+ messages in thread
From: Phil Sutter @ 2020-02-10 11:14 UTC (permalink / raw)
To: Pablo Neira Ayuso; +Cc: netfilter-devel
Accept escaped asterisks also mid-string and as only character.
Especially the latter will help when translating from iptables where
asterisk has no special meaning.
Signed-off-by: Phil Sutter <phil@nwl.cc>
---
Changes since v1:
- Still reject unescaped asterisks mid-string.
---
src/scanner.l | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/scanner.l b/src/scanner.l
index 99ee83559d2eb..20a59de51d1ff 100644
--- a/src/scanner.l
+++ b/src/scanner.l
@@ -120,7 +120,7 @@ numberstring ({decstring}|{hexstring})
letter [a-zA-Z]
string ({letter}|[_.])({letter}|{digit}|[/\-_\.])*
quotedstring \"[^"]*\"
-asteriskstring ({string}\*|{string}\\\*)
+asteriskstring ({string}\*|{string}\\\*|\\\*|{string}\\\*{string})
comment #.*$
slash \/
--
2.24.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [nft PATCH v2 1/2] doc: nft.8: Mention wildcard interface matching
2020-02-10 11:14 [nft PATCH v2 1/2] doc: nft.8: Mention wildcard interface matching Phil Sutter
2020-02-10 11:14 ` [nft PATCH v2 2/2] scanner: Extend asteriskstring definition Phil Sutter
@ 2020-02-10 11:23 ` Pablo Neira Ayuso
1 sibling, 0 replies; 4+ messages in thread
From: Pablo Neira Ayuso @ 2020-02-10 11:23 UTC (permalink / raw)
To: Phil Sutter; +Cc: netfilter-devel
On Mon, Feb 10, 2020 at 12:14:22PM +0100, Phil Sutter wrote:
> Special meaning of asterisk in interface names wasn't described
> anywhere.
LGTM, thanks Phil.
^ permalink raw reply [flat|nested] 4+ messages in thread
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2020-02-10 11:14 [nft PATCH v2 1/2] doc: nft.8: Mention wildcard interface matching Phil Sutter
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2020-02-10 11:23 ` Pablo Neira Ayuso
2020-02-10 11:23 ` [nft PATCH v2 1/2] doc: nft.8: Mention wildcard interface matching Pablo Neira Ayuso
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