#include <net/netfilter/nf_conntrack_helper.h>
#include <linux/netfilter/nf_conntrack_sip.h>
-#if 0
-#define DEBUGP printk
-#else
-#define DEBUGP(format, args...)
-#endif
-
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Christian Hentschel <chentschel@arnet.com.ar>");
MODULE_DESCRIPTION("SIP connection tracking helper");
module_param(sip_timeout, uint, 0600);
MODULE_PARM_DESC(sip_timeout, "timeout for the master SIP session");
-unsigned int (*nf_nat_sip_hook)(struct sk_buff **pskb,
+unsigned int (*nf_nat_sip_hook)(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
struct nf_conn *ct,
const char **dptr) __read_mostly;
EXPORT_SYMBOL_GPL(nf_nat_sip_hook);
-unsigned int (*nf_nat_sdp_hook)(struct sk_buff **pskb,
+unsigned int (*nf_nat_sdp_hook)(struct sk_buff *skb,
enum ip_conntrack_info ctinfo,
struct nf_conntrack_expect *exp,
const char *dptr) __read_mostly;
const char *aux = dptr;
if (!parse_addr(ct, dptr, &dptr, &addr, limit)) {
- DEBUGP("ip: %s parse failed.!\n", dptr);
+ pr_debug("ip: %s parse failed.!\n", dptr);
return 0;
}
static int skp_epaddr_len(struct nf_conn *ct, const char *dptr,
const char *limit, int *shift)
{
+ const char *start = dptr;
int s = *shift;
- for (; dptr <= limit && *dptr != '@'; dptr++)
+ /* Search for @, but stop at the end of the line.
+ * We are inside a sip: URI, so we don't need to worry about
+ * continuation lines. */
+ while (dptr <= limit &&
+ *dptr != '@' && *dptr != '\r' && *dptr != '\n') {
(*shift)++;
+ dptr++;
+ }
- if (*dptr == '@') {
+ if (dptr <= limit && *dptr == '@') {
dptr++;
(*shift)++;
- } else
+ } else {
+ dptr = start;
*shift = s;
+ }
return epaddr_len(ct, dptr, limit, shift);
}
while (dptr <= limit) {
if ((strncmp(dptr, hnfo->lname, hnfo->lnlen) != 0) &&
- (strncmp(dptr, hnfo->sname, hnfo->snlen) != 0)) {
+ (hnfo->sname == NULL ||
+ strncmp(dptr, hnfo->sname, hnfo->snlen) != 0)) {
dptr++;
continue;
}
aux = ct_sip_search(hnfo->ln_str, dptr, hnfo->ln_strlen,
- ct_sip_lnlen(dptr, limit),
+ ct_sip_lnlen(dptr, limit),
hnfo->case_sensitive);
if (!aux) {
- DEBUGP("'%s' not found in '%s'.\n", hnfo->ln_str,
- hnfo->lname);
+ pr_debug("'%s' not found in '%s'.\n", hnfo->ln_str,
+ hnfo->lname);
return -1;
}
aux += hnfo->ln_strlen;
*matchoff = (aux - k) + shift;
- DEBUGP("%s match succeeded! - len: %u\n", hnfo->lname,
- *matchlen);
+ pr_debug("%s match succeeded! - len: %u\n", hnfo->lname,
+ *matchlen);
return 1;
}
- DEBUGP("%s header not found.\n", hnfo->lname);
+ pr_debug("%s header not found.\n", hnfo->lname);
return 0;
}
EXPORT_SYMBOL_GPL(ct_sip_get_info);
-static int set_expected_rtp(struct sk_buff **pskb,
+static int set_expected_rtp(struct sk_buff *skb,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo,
union nf_conntrack_address *addr,
int ret;
typeof(nf_nat_sdp_hook) nf_nat_sdp;
- exp = nf_conntrack_expect_alloc(ct);
+ exp = nf_ct_expect_alloc(ct);
if (exp == NULL)
return NF_DROP;
- nf_conntrack_expect_init(exp, family,
- &ct->tuplehash[!dir].tuple.src.u3, addr,
- IPPROTO_UDP, NULL, &port);
+ nf_ct_expect_init(exp, family,
+ &ct->tuplehash[!dir].tuple.src.u3, addr,
+ IPPROTO_UDP, NULL, &port);
nf_nat_sdp = rcu_dereference(nf_nat_sdp_hook);
if (nf_nat_sdp && ct->status & IPS_NAT_MASK)
- ret = nf_nat_sdp(pskb, ctinfo, exp, dptr);
+ ret = nf_nat_sdp(skb, ctinfo, exp, dptr);
else {
- if (nf_conntrack_expect_related(exp) != 0)
+ if (nf_ct_expect_related(exp) != 0)
ret = NF_DROP;
else
ret = NF_ACCEPT;
}
- nf_conntrack_expect_put(exp);
+ nf_ct_expect_put(exp);
return ret;
}
-static int sip_help(struct sk_buff **pskb,
+static int sip_help(struct sk_buff *skb,
unsigned int protoff,
struct nf_conn *ct,
enum ip_conntrack_info ctinfo)
/* No Data ? */
dataoff = protoff + sizeof(struct udphdr);
- if (dataoff >= (*pskb)->len)
+ if (dataoff >= skb->len)
return NF_ACCEPT;
- nf_ct_refresh(ct, *pskb, sip_timeout * HZ);
+ nf_ct_refresh(ct, skb, sip_timeout * HZ);
- if (!skb_is_nonlinear(*pskb))
- dptr = (*pskb)->data + dataoff;
+ if (!skb_is_nonlinear(skb))
+ dptr = skb->data + dataoff;
else {
- DEBUGP("Copy of skbuff not supported yet.\n");
+ pr_debug("Copy of skbuff not supported yet.\n");
goto out;
}
nf_nat_sip = rcu_dereference(nf_nat_sip_hook);
if (nf_nat_sip && ct->status & IPS_NAT_MASK) {
- if (!nf_nat_sip(pskb, ctinfo, ct, &dptr)) {
+ if (!nf_nat_sip(skb, ctinfo, ct, &dptr)) {
ret = NF_DROP;
goto out;
}
}
- datalen = (*pskb)->len - dataoff;
+ datalen = skb->len - dataoff;
if (datalen < sizeof("SIP/2.0 200") - 1)
goto out;
/* RTP info only in some SDP pkts */
if (memcmp(dptr, "INVITE", sizeof("INVITE") - 1) != 0 &&
+ memcmp(dptr, "UPDATE", sizeof("UPDATE") - 1) != 0 &&
+ memcmp(dptr, "SIP/2.0 180", sizeof("SIP/2.0 180") - 1) != 0 &&
+ memcmp(dptr, "SIP/2.0 183", sizeof("SIP/2.0 183") - 1) != 0 &&
memcmp(dptr, "SIP/2.0 200", sizeof("SIP/2.0 200") - 1) != 0) {
goto out;
}
/* We'll drop only if there are parse problems. */
if (!parse_addr(ct, dptr + matchoff, NULL, &addr,
- dptr + datalen)) {
+ dptr + datalen)) {
ret = NF_DROP;
goto out;
}
if (ct_sip_get_info(ct, dptr, datalen, &matchoff, &matchlen,
- POS_MEDIA) > 0) {
+ POS_MEDIA) > 0) {
port = simple_strtoul(dptr + matchoff, NULL, 10);
if (port < 1024) {
ret = NF_DROP;
goto out;
}
- ret = set_expected_rtp(pskb, ct, ctinfo, &addr,
+ ret = set_expected_rtp(skb, ct, ctinfo, &addr,
htons(port), dptr);
}
}
for (j = 0; j < 2; j++) {
sip[i][j].tuple.dst.protonum = IPPROTO_UDP;
sip[i][j].tuple.src.u.udp.port = htons(ports[i]);
- sip[i][j].mask.src.l3num = 0xFFFF;
- sip[i][j].mask.src.u.udp.port = htons(0xFFFF);
- sip[i][j].mask.dst.protonum = 0xFF;
sip[i][j].max_expected = 2;
sip[i][j].timeout = 3 * 60; /* 3 minutes */
sip[i][j].me = THIS_MODULE;
sprintf(tmpname, "sip-%u", i);
sip[i][j].name = tmpname;
- DEBUGP("port #%u: %u\n", i, ports[i]);
+ pr_debug("port #%u: %u\n", i, ports[i]);
ret = nf_conntrack_helper_register(&sip[i][j]);
if (ret) {
projects / linux-2.6-omap-h63xx.git / blobdiff