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| author | Harvey Harrison <harvey.harrison@gmail.com> | 2009-03-28 15:38:30 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-03-28 23:55:57 -0700 |
| commit | f940964901aa69e28ce729d7614061d014184472 (patch) | |
| tree | 4f52de427646cbff6803e4aefd68db337632d67a | |
| parent | 3e8af307bfe3b6318a1aaaf8ce18d0af7ddf2ea2 (diff) | |
| download | op-kernel-dev-f940964901aa69e28ce729d7614061d014184472.zip op-kernel-dev-f940964901aa69e28ce729d7614061d014184472.tar.gz | |
netfilter: fix endian bug in conntrack printks
dcc_ip is treated as a host-endian value in the first printk,
but the second printk uses %pI4 which expects a be32. This
will cause a mismatch between the debug statement and the
warning statement.
Treat as a be32 throughout and avoid some byteswapping during
some comparisions, and allow another user of HIPQUAD to bite the
dust.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/netfilter/nf_conntrack_irc.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/net/netfilter/nf_conntrack_irc.c b/net/netfilter/nf_conntrack_irc.c index 409c8be..8bd98c8 100644 --- a/net/netfilter/nf_conntrack_irc.c +++ b/net/netfilter/nf_conntrack_irc.c @@ -66,7 +66,7 @@ static const char *const dccprotos[] = { * ad_beg_p returns pointer to first byte of addr data * ad_end_p returns pointer to last byte of addr data */ -static int parse_dcc(char *data, const char *data_end, u_int32_t *ip, +static int parse_dcc(char *data, const char *data_end, __be32 *ip, u_int16_t *port, char **ad_beg_p, char **ad_end_p) { char *tmp; @@ -85,7 +85,7 @@ static int parse_dcc(char *data, const char *data_end, u_int32_t *ip, return -1; *ad_beg_p = data; - *ip = simple_strtoul(data, &data, 10); + *ip = cpu_to_be32(simple_strtoul(data, &data, 10)); /* skip blanks between ip and port */ while (*data == ' ') { @@ -112,7 +112,7 @@ static int help(struct sk_buff *skb, unsigned int protoff, int dir = CTINFO2DIR(ctinfo); struct nf_conntrack_expect *exp; struct nf_conntrack_tuple *tuple; - u_int32_t dcc_ip; + __be32 dcc_ip; u_int16_t dcc_port; __be16 port; int i, ret = NF_ACCEPT; @@ -177,13 +177,14 @@ static int help(struct sk_buff *skb, unsigned int protoff, pr_debug("unable to parse dcc command\n"); continue; } - pr_debug("DCC bound ip/port: %u.%u.%u.%u:%u\n", - HIPQUAD(dcc_ip), dcc_port); + + pr_debug("DCC bound ip/port: %pI4:%u\n", + &dcc_ip, dcc_port); /* dcc_ip can be the internal OR external (NAT'ed) IP */ tuple = &ct->tuplehash[dir].tuple; - if (tuple->src.u3.ip != htonl(dcc_ip) && - tuple->dst.u3.ip != htonl(dcc_ip)) { + if (tuple->src.u3.ip != dcc_ip && + tuple->dst.u3.ip != dcc_ip) { if (net_ratelimit()) printk(KERN_WARNING "Forged DCC command from %pI4: %pI4:%u\n", |
