[libnftables PATCH 0/3] small fixes

[libnftables PATCH 0/3] small fixes

[Eric Leblond]

Hi,

Here's three small patches which fix some issue with the examples
provided in the code.

BR,
--
Eric

[libnftables PATCH 1/3] examples: delete payload code in nft-chain-add

[Eric Leblond]

'make check' was not working due to the fact that
'libnftables/payload.h' was not present. As the payload
related code was commented, the "I've got an axe" solution
was to remove all payload related code. This is done in this
patch.

Signed-off-by: Eric Leblond <eric@regit.org>
---
 examples/nft-rule-add.c |   25 -------------------------
 1 file changed, 25 deletions(-)

diff --git a/examples/nft-rule-add.c b/examples/nft-rule-add.c
index b906715..c2b8968 100644
--- a/examples/nft-rule-add.c
+++ b/examples/nft-rule-add.c
@@ -21,7 +21,6 @@
 #include <libmnl/libmnl.h>
 #include <libnftables/rule.h>
 #include <libnftables/expr.h>
-#include <libnftables/payload.h>
 
 #include <linux/netfilter_ipv4/ipt_LOG.h>
 #include <linux/netfilter/xt_iprange.h>
@@ -93,29 +92,6 @@ static void add_expr_match(struct nft_rule *r)
 
 #define field_sizeof(t, f)	(sizeof(((t *)NULL)->f))
 
-static void add_payload2(struct nft_rule_expr *e)
-{
-	nft_rule_expr_set_u32(e, NFT_EXPR_PAYLOAD_BASE,
-			      NFT_PAYLOAD_NETWORK_HEADER);
-	nft_rule_expr_set_u32(e, NFT_EXPR_PAYLOAD_DREG, NFT_REG_1);
-	nft_rule_expr_set_u32(e, NFT_EXPR_PAYLOAD_OFFSET,
-			      offsetof(struct iphdr, protocol));
-	nft_rule_expr_set_u32(e, NFT_EXPR_PAYLOAD_LEN, 1);
-}
-
-static void add_payload(struct nft_rule *r)
-{
-	struct nft_rule_expr *expr;
-
-	expr = nft_rule_expr_alloc("payload");
-	if (expr == NULL)
-		return;
-
-	add_payload2(expr);
-
-	nft_rule_add_expr(r, expr);
-}
-
 int main(int argc, char *argv[])
 {
 	struct mnl_socket *nl;
@@ -153,7 +129,6 @@ int main(int argc, char *argv[])
 
 	add_expr_match(r);
 	add_expr_target(r);
-//	add_payload(r);
 
 	char tmp[1024];
 	nft_rule_snprintf(tmp, sizeof(tmp), r, 0, 0);
-- 
1.7.10.4

[libnftables PATCH 2/3] nft-events: add newline to output

[Eric Leblond]

This patch adds a new line to messages to be sure that they are
printed to the shell as soon as they occur. This also fixes the
display of output.

Signed-off-by: Eric Leblond <eric@regit.org>
---
 examples/nft-events.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/examples/nft-events.c b/examples/nft-events.c
index aa8c85e..5550c70 100644
--- a/examples/nft-events.c
+++ b/examples/nft-events.c
@@ -39,7 +39,7 @@ static int table_cb(const struct nlmsghdr *nlh, int type)
 	}
 
 	nft_table_snprintf(buf, sizeof(buf), t, NFT_TABLE_O_DEFAULT, 0);
-	printf("[%s]\t%s", type == NFT_MSG_NEWTABLE ? "NEW" : "DEL", buf);
+	printf("[%s]\t%s\n", type == NFT_MSG_NEWTABLE ? "NEW" : "DEL", buf);
 
 err_free:
 	nft_table_free(t);
@@ -64,7 +64,7 @@ static int rule_cb(const struct nlmsghdr *nlh, int type)
 	}
 
 	nft_rule_snprintf(buf, sizeof(buf), t, NFT_RULE_O_DEFAULT, 0);
-	printf("[%s]\t%s", type == NFT_MSG_NEWRULE ? "NEW" : "DEL", buf);
+	printf("[%s]\t%s\n", type == NFT_MSG_NEWRULE ? "NEW" : "DEL", buf);
 
 err_free:
 	nft_rule_free(t);
@@ -89,7 +89,7 @@ static int chain_cb(const struct nlmsghdr *nlh, int type)
 	}
 
 	nft_chain_snprintf(buf, sizeof(buf), t, NFT_CHAIN_O_DEFAULT, 0);
-	printf("[%s]\t%s", type == NFT_MSG_NEWCHAIN ? "NEW" : "DEL", buf);
+	printf("[%s]\t%s\n", type == NFT_MSG_NEWCHAIN ? "NEW" : "DEL", buf);
 
 err_free:
 	nft_chain_free(t);
-- 
1.7.10.4

[libnftables PATCH 3/3] expr: fix display of dreg expression

[Eric Leblond]

Signed-off-by: Eric Leblond <eric@regit.org>
---
 src/expr/immediate.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/expr/immediate.c b/src/expr/immediate.c
index 7cfb4bf..295054d 100644
--- a/src/expr/immediate.c
+++ b/src/expr/immediate.c
@@ -335,7 +335,7 @@ nft_rule_expr_immediate_snprintf_default(char *buf, size_t len,
 	int size = len, offset = 0, ret;
 	struct nft_expr_immediate *imm = (struct nft_expr_immediate *)e->data;
 
-	ret = snprintf(buf, len, "dreg=%u", imm->dreg);
+	ret = snprintf(buf, len, "dreg=%u ", imm->dreg);
 	SNPRINTF_BUFFER_SIZE(ret, size, len, offset);
 
 	if (e->flags & (1 << NFT_EXPR_IMM_DATA)) {
-- 
1.7.10.4

Re: [libnftables PATCH 0/3] small fixes

[Arturo Borrero Gonzalez]

2013/6/4 Eric Leblond <eric@regit.org>:
>
> Hi,
>
> Here's three small patches which fix some issue with the examples
> provided in the code.
>

Hi Eric,

I also saw that issues. Thanks.

Regards.
--
Arturo Borrero González
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Re: [libnftables PATCH 1/3] examples: delete payload code in nft-chain-add

[Pablo Neira Ayuso]

On Tue, Jun 04, 2013 at 10:05:21AM +0200, Eric Leblond wrote:
> 'make check' was not working due to the fact that
> 'libnftables/payload.h' was not present.

Oops, that file was dead lying on my filesystem, applied a fix for
this.

> As the payload related code was commented, the "I've got an axe"
> solution was to remove all payload related code. This is done in
> this patch.

I prefered to keep the payload example, so apply a different fix.
Thanks for the spots anyway.

Re: [libnftables PATCH 2/3] nft-events: add newline to output

[Pablo Neira Ayuso]

On Tue, Jun 04, 2013 at 10:05:22AM +0200, Eric Leblond wrote:
> This patch adds a new line to messages to be sure that they are
> printed to the shell as soon as they occur. This also fixes the
> display of output.

Applied, thanks Eric.

Re: [libnftables PATCH 3/3] expr: fix display of dreg expression

[Pablo Neira Ayuso]

Also applied, thanks Eric.