[NETFILTER]: Convert ip_tables matches/targets to centralized error checking
Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
3cdc7c953e
commit
1d5cd90976
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@ -181,23 +181,6 @@ static int ipt_snat_checkentry(const char *tablename,
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printk("SNAT: multiple ranges no longer supported\n");
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return 0;
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}
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if (targinfosize != IPT_ALIGN(sizeof(struct ip_nat_multi_range_compat))) {
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DEBUGP("SNAT: Target size %u wrong for %u ranges\n",
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targinfosize, mr->rangesize);
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return 0;
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}
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/* Only allow these for NAT. */
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if (strcmp(tablename, "nat") != 0) {
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DEBUGP("SNAT: wrong table %s\n", tablename);
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return 0;
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}
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if (hook_mask & ~(1 << NF_IP_POST_ROUTING)) {
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DEBUGP("SNAT: hook mask 0x%x bad\n", hook_mask);
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return 0;
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}
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return 1;
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}
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@ -214,24 +197,6 @@ static int ipt_dnat_checkentry(const char *tablename,
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printk("DNAT: multiple ranges no longer supported\n");
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return 0;
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}
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if (targinfosize != IPT_ALIGN(sizeof(struct ip_nat_multi_range_compat))) {
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DEBUGP("DNAT: Target size %u wrong for %u ranges\n",
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targinfosize, mr->rangesize);
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return 0;
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}
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/* Only allow these for NAT. */
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if (strcmp(tablename, "nat") != 0) {
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DEBUGP("DNAT: wrong table %s\n", tablename);
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return 0;
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}
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if (hook_mask & ~((1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_OUT))) {
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DEBUGP("DNAT: hook mask 0x%x bad\n", hook_mask);
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return 0;
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}
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return 1;
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}
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@ -299,12 +264,18 @@ int ip_nat_rule_find(struct sk_buff **pskb,
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static struct ipt_target ipt_snat_reg = {
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.name = "SNAT",
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.target = ipt_snat_target,
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.targetsize = sizeof(struct ip_nat_multi_range_compat),
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.table = "nat",
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.hooks = 1 << NF_IP_POST_ROUTING,
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.checkentry = ipt_snat_checkentry,
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};
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static struct ipt_target ipt_dnat_reg = {
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.name = "DNAT",
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.target = ipt_dnat_target,
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.targetsize = sizeof(struct ip_nat_multi_range_compat),
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.table = "nat",
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.hooks = 1 << NF_IP_PRE_ROUTING,
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.checkentry = ipt_dnat_checkentry,
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};
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@ -477,21 +477,12 @@ standard_check(const struct ipt_entry_target *t,
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struct ipt_standard_target *targ = (void *)t;
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/* Check standard info. */
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if (t->u.target_size
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!= IPT_ALIGN(sizeof(struct ipt_standard_target))) {
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duprintf("standard_check: target size %u != %u\n",
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t->u.target_size,
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IPT_ALIGN(sizeof(struct ipt_standard_target)));
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return 0;
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}
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if (targ->verdict >= 0
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&& targ->verdict > max_offset - sizeof(struct ipt_entry)) {
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duprintf("ipt_standard_check: bad verdict (%i)\n",
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targ->verdict);
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return 0;
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}
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if (targ->verdict < -NF_MAX_VERDICT - 1) {
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duprintf("ipt_standard_check: bad negative verdict (%i)\n",
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targ->verdict);
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@ -1330,24 +1321,22 @@ icmp_checkentry(const char *tablename,
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unsigned int matchsize,
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unsigned int hook_mask)
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{
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const struct ipt_ip *ip = info;
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const struct ipt_icmp *icmpinfo = matchinfo;
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/* Must specify proto == ICMP, and no unknown invflags */
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return ip->proto == IPPROTO_ICMP
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&& !(ip->invflags & IPT_INV_PROTO)
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&& matchsize == IPT_ALIGN(sizeof(struct ipt_icmp))
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&& !(icmpinfo->invflags & ~IPT_ICMP_INV);
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/* Must specify no unknown invflags */
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return !(icmpinfo->invflags & ~IPT_ICMP_INV);
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}
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/* The built-in targets: standard (NULL) and error. */
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static struct ipt_target ipt_standard_target = {
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.name = IPT_STANDARD_TARGET,
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.targetsize = sizeof(int),
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};
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static struct ipt_target ipt_error_target = {
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.name = IPT_ERROR_TARGET,
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.target = ipt_error,
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.targetsize = IPT_FUNCTION_MAXNAMELEN,
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};
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static struct nf_sockopt_ops ipt_sockopts = {
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@ -1362,8 +1351,10 @@ static struct nf_sockopt_ops ipt_sockopts = {
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static struct ipt_match icmp_matchstruct = {
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.name = "icmp",
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.match = &icmp_match,
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.checkentry = &icmp_checkentry,
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.match = icmp_match,
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.matchsize = sizeof(struct ipt_icmp),
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.proto = IPPROTO_ICMP,
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.checkentry = icmp_checkentry,
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};
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static int __init init(void)
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@ -389,13 +389,6 @@ checkentry(const char *tablename,
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struct clusterip_config *config;
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if (targinfosize != IPT_ALIGN(sizeof(struct ipt_clusterip_tgt_info))) {
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printk(KERN_WARNING "CLUSTERIP: targinfosize %u != %Zu\n",
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targinfosize,
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IPT_ALIGN(sizeof(struct ipt_clusterip_tgt_info)));
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return 0;
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}
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if (cipinfo->hash_mode != CLUSTERIP_HASHMODE_SIP &&
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cipinfo->hash_mode != CLUSTERIP_HASHMODE_SIP_SPT &&
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cipinfo->hash_mode != CLUSTERIP_HASHMODE_SIP_SPT_DPT) {
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@ -476,12 +469,13 @@ static void destroy(void *matchinfo, unsigned int matchinfosize)
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clusterip_config_put(cipinfo->config);
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}
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static struct ipt_target clusterip_tgt = {
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.name = "CLUSTERIP",
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.target = &target,
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.checkentry = &checkentry,
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.destroy = &destroy,
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.me = THIS_MODULE
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static struct ipt_target clusterip_tgt = {
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.name = "CLUSTERIP",
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.target = target,
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.targetsize = sizeof(struct ipt_clusterip_tgt_info),
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.checkentry = checkentry,
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.destroy = destroy,
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.me = THIS_MODULE
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};
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@ -64,29 +64,18 @@ checkentry(const char *tablename,
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{
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const u_int8_t dscp = ((struct ipt_DSCP_info *)targinfo)->dscp;
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if (targinfosize != IPT_ALIGN(sizeof(struct ipt_DSCP_info))) {
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printk(KERN_WARNING "DSCP: targinfosize %u != %Zu\n",
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targinfosize,
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IPT_ALIGN(sizeof(struct ipt_DSCP_info)));
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return 0;
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}
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if (strcmp(tablename, "mangle") != 0) {
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printk(KERN_WARNING "DSCP: can only be called from \"mangle\" table, not \"%s\"\n", tablename);
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return 0;
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}
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if ((dscp > IPT_DSCP_MAX)) {
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printk(KERN_WARNING "DSCP: dscp %x out of range\n", dscp);
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return 0;
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}
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return 1;
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}
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static struct ipt_target ipt_dscp_reg = {
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.name = "DSCP",
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.target = target,
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.targetsize = sizeof(struct ipt_DSCP_info),
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.table = "mangle",
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.checkentry = checkentry,
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.me = THIS_MODULE,
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};
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@ -121,18 +121,6 @@ checkentry(const char *tablename,
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const struct ipt_ECN_info *einfo = (struct ipt_ECN_info *)targinfo;
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const struct ipt_entry *e = e_void;
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if (targinfosize != IPT_ALIGN(sizeof(struct ipt_ECN_info))) {
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printk(KERN_WARNING "ECN: targinfosize %u != %Zu\n",
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targinfosize,
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IPT_ALIGN(sizeof(struct ipt_ECN_info)));
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return 0;
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}
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if (strcmp(tablename, "mangle") != 0) {
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printk(KERN_WARNING "ECN: can only be called from \"mangle\" table, not \"%s\"\n", tablename);
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return 0;
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}
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if (einfo->operation & IPT_ECN_OP_MASK) {
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printk(KERN_WARNING "ECN: unsupported ECN operation %x\n",
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einfo->operation);
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@ -143,20 +131,20 @@ checkentry(const char *tablename,
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einfo->ip_ect);
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return 0;
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}
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if ((einfo->operation & (IPT_ECN_OP_SET_ECE|IPT_ECN_OP_SET_CWR))
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&& (e->ip.proto != IPPROTO_TCP || (e->ip.invflags & IPT_INV_PROTO))) {
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printk(KERN_WARNING "ECN: cannot use TCP operations on a "
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"non-tcp rule\n");
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return 0;
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}
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return 1;
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}
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static struct ipt_target ipt_ecn_reg = {
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.name = "ECN",
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.target = target,
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.targetsize = sizeof(struct ipt_ECN_info),
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.table = "mangle",
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.checkentry = checkentry,
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.me = THIS_MODULE,
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};
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@ -443,29 +443,22 @@ static int ipt_log_checkentry(const char *tablename,
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{
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const struct ipt_log_info *loginfo = targinfo;
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if (targinfosize != IPT_ALIGN(sizeof(struct ipt_log_info))) {
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DEBUGP("LOG: targinfosize %u != %u\n",
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targinfosize, IPT_ALIGN(sizeof(struct ipt_log_info)));
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return 0;
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}
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if (loginfo->level >= 8) {
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DEBUGP("LOG: level %u >= 8\n", loginfo->level);
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return 0;
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}
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if (loginfo->prefix[sizeof(loginfo->prefix)-1] != '\0') {
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DEBUGP("LOG: prefix term %i\n",
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loginfo->prefix[sizeof(loginfo->prefix)-1]);
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return 0;
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}
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return 1;
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}
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static struct ipt_target ipt_log_reg = {
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.name = "LOG",
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.target = ipt_log_target,
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.targetsize = sizeof(struct ipt_log_info),
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.checkentry = ipt_log_checkentry,
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.me = THIS_MODULE,
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};
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@ -47,19 +47,6 @@ masquerade_check(const char *tablename,
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{
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const struct ip_nat_multi_range_compat *mr = targinfo;
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if (strcmp(tablename, "nat") != 0) {
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DEBUGP("masquerade_check: bad table `%s'.\n", tablename);
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return 0;
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}
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if (targinfosize != IPT_ALIGN(sizeof(*mr))) {
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DEBUGP("masquerade_check: size %u != %u.\n",
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targinfosize, sizeof(*mr));
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return 0;
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}
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if (hook_mask & ~(1 << NF_IP_POST_ROUTING)) {
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DEBUGP("masquerade_check: bad hooks %x.\n", hook_mask);
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return 0;
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}
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if (mr->range[0].flags & IP_NAT_RANGE_MAP_IPS) {
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DEBUGP("masquerade_check: bad MAP_IPS.\n");
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return 0;
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@ -179,6 +166,9 @@ static struct notifier_block masq_inet_notifier = {
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static struct ipt_target masquerade = {
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.name = "MASQUERADE",
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.target = masquerade_target,
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.targetsize = sizeof(struct ip_nat_multi_range_compat),
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.table = "nat",
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.hooks = 1 << NF_IP_POST_ROUTING,
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.checkentry = masquerade_check,
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.me = THIS_MODULE,
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};
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@ -38,19 +38,6 @@ check(const char *tablename,
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{
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const struct ip_nat_multi_range_compat *mr = targinfo;
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if (strcmp(tablename, "nat") != 0) {
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DEBUGP(MODULENAME":check: bad table `%s'.\n", tablename);
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return 0;
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}
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if (targinfosize != IPT_ALIGN(sizeof(*mr))) {
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DEBUGP(MODULENAME":check: size %u.\n", targinfosize);
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return 0;
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}
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if (hook_mask & ~((1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_POST_ROUTING) |
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(1 << NF_IP_LOCAL_OUT))) {
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DEBUGP(MODULENAME":check: bad hooks %x.\n", hook_mask);
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return 0;
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}
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if (!(mr->range[0].flags & IP_NAT_RANGE_MAP_IPS)) {
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DEBUGP(MODULENAME":check: bad MAP_IPS.\n");
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return 0;
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@ -101,6 +88,10 @@ target(struct sk_buff **pskb,
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static struct ipt_target target_module = {
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.name = MODULENAME,
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.target = target,
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.targetsize = sizeof(struct ip_nat_multi_range_compat),
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.table = "nat",
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.hooks = (1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_POST_ROUTING) |
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(1 << NF_IP_LOCAL_OUT),
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.checkentry = check,
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.me = THIS_MODULE
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};
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@ -40,18 +40,6 @@ redirect_check(const char *tablename,
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{
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const struct ip_nat_multi_range_compat *mr = targinfo;
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if (strcmp(tablename, "nat") != 0) {
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DEBUGP("redirect_check: bad table `%s'.\n", table);
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return 0;
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}
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if (targinfosize != IPT_ALIGN(sizeof(*mr))) {
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DEBUGP("redirect_check: size %u.\n", targinfosize);
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return 0;
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}
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if (hook_mask & ~((1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_OUT))) {
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DEBUGP("redirect_check: bad hooks %x.\n", hook_mask);
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return 0;
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}
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if (mr->range[0].flags & IP_NAT_RANGE_MAP_IPS) {
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DEBUGP("redirect_check: bad MAP_IPS.\n");
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return 0;
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@ -115,6 +103,9 @@ redirect_target(struct sk_buff **pskb,
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static struct ipt_target redirect_reg = {
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.name = "REDIRECT",
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.target = redirect_target,
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.targetsize = sizeof(struct ip_nat_multi_range_compat),
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.table = "nat",
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.hooks = (1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_OUT),
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.checkentry = redirect_check,
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.me = THIS_MODULE,
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};
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@ -290,23 +290,6 @@ static int check(const char *tablename,
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const struct ipt_reject_info *rejinfo = targinfo;
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const struct ipt_entry *e = e_void;
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if (targinfosize != IPT_ALIGN(sizeof(struct ipt_reject_info))) {
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DEBUGP("REJECT: targinfosize %u != 0\n", targinfosize);
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return 0;
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}
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/* Only allow these for packet filtering. */
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if (strcmp(tablename, "filter") != 0) {
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DEBUGP("REJECT: bad table `%s'.\n", tablename);
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return 0;
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}
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if ((hook_mask & ~((1 << NF_IP_LOCAL_IN)
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| (1 << NF_IP_FORWARD)
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| (1 << NF_IP_LOCAL_OUT))) != 0) {
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DEBUGP("REJECT: bad hook mask %X\n", hook_mask);
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return 0;
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}
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if (rejinfo->with == IPT_ICMP_ECHOREPLY) {
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printk("REJECT: ECHOREPLY no longer supported.\n");
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return 0;
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@ -318,13 +301,16 @@ static int check(const char *tablename,
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return 0;
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}
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}
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return 1;
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}
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static struct ipt_target ipt_reject_reg = {
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.name = "REJECT",
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.target = reject,
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.targetsize = sizeof(struct ipt_reject_info),
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.table = "filter",
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.hooks = (1 << NF_IP_LOCAL_IN) | (1 << NF_IP_FORWARD) |
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(1 << NF_IP_LOCAL_OUT),
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.checkentry = check,
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.me = THIS_MODULE,
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};
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@ -59,18 +59,6 @@ same_check(const char *tablename,
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mr->ipnum = 0;
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if (strcmp(tablename, "nat") != 0) {
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DEBUGP("same_check: bad table `%s'.\n", tablename);
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return 0;
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}
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if (targinfosize != IPT_ALIGN(sizeof(*mr))) {
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DEBUGP("same_check: size %u.\n", targinfosize);
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return 0;
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}
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if (hook_mask & ~(1 << NF_IP_PRE_ROUTING | 1 << NF_IP_POST_ROUTING)) {
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DEBUGP("same_check: bad hooks %x.\n", hook_mask);
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return 0;
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}
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if (mr->rangesize < 1) {
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DEBUGP("same_check: need at least one dest range.\n");
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return 0;
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@ -191,6 +179,9 @@ same_target(struct sk_buff **pskb,
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static struct ipt_target same_reg = {
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.name = "SAME",
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.target = same_target,
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.targetsize = sizeof(struct ipt_same_info),
|
||||
.table = "nat",
|
||||
.hooks = (1 << NF_IP_PRE_ROUTING | 1 << NF_IP_POST_ROUTING),
|
||||
.checkentry = same_check,
|
||||
.destroy = same_destroy,
|
||||
.me = THIS_MODULE,
|
||||
|
|
|
@ -218,13 +218,6 @@ ipt_tcpmss_checkentry(const char *tablename,
|
|||
const struct ipt_tcpmss_info *tcpmssinfo = targinfo;
|
||||
const struct ipt_entry *e = e_void;
|
||||
|
||||
if (targinfosize != IPT_ALIGN(sizeof(struct ipt_tcpmss_info))) {
|
||||
DEBUGP("ipt_tcpmss_checkentry: targinfosize %u != %u\n",
|
||||
targinfosize, IPT_ALIGN(sizeof(struct ipt_tcpmss_info)));
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
if((tcpmssinfo->mss == IPT_TCPMSS_CLAMP_PMTU) &&
|
||||
((hook_mask & ~((1 << NF_IP_FORWARD)
|
||||
| (1 << NF_IP_LOCAL_OUT)
|
||||
|
@ -233,11 +226,8 @@ ipt_tcpmss_checkentry(const char *tablename,
|
|||
return 0;
|
||||
}
|
||||
|
||||
if (e->ip.proto == IPPROTO_TCP
|
||||
&& !(e->ip.invflags & IPT_INV_PROTO)
|
||||
&& IPT_MATCH_ITERATE(e, find_syn_match))
|
||||
if (IPT_MATCH_ITERATE(e, find_syn_match))
|
||||
return 1;
|
||||
|
||||
printk("TCPMSS: Only works on TCP SYN packets\n");
|
||||
return 0;
|
||||
}
|
||||
|
@ -245,6 +235,8 @@ ipt_tcpmss_checkentry(const char *tablename,
|
|||
static struct ipt_target ipt_tcpmss_reg = {
|
||||
.name = "TCPMSS",
|
||||
.target = ipt_tcpmss_target,
|
||||
.targetsize = sizeof(struct ipt_tcpmss_info),
|
||||
.proto = IPPROTO_TCP,
|
||||
.checkentry = ipt_tcpmss_checkentry,
|
||||
.me = THIS_MODULE,
|
||||
};
|
||||
|
|
|
@ -59,18 +59,6 @@ checkentry(const char *tablename,
|
|||
{
|
||||
const u_int8_t tos = ((struct ipt_tos_target_info *)targinfo)->tos;
|
||||
|
||||
if (targinfosize != IPT_ALIGN(sizeof(struct ipt_tos_target_info))) {
|
||||
printk(KERN_WARNING "TOS: targinfosize %u != %Zu\n",
|
||||
targinfosize,
|
||||
IPT_ALIGN(sizeof(struct ipt_tos_target_info)));
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (strcmp(tablename, "mangle") != 0) {
|
||||
printk(KERN_WARNING "TOS: can only be called from \"mangle\" table, not \"%s\"\n", tablename);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (tos != IPTOS_LOWDELAY
|
||||
&& tos != IPTOS_THROUGHPUT
|
||||
&& tos != IPTOS_RELIABILITY
|
||||
|
@ -79,13 +67,14 @@ checkentry(const char *tablename,
|
|||
printk(KERN_WARNING "TOS: bad tos value %#x\n", tos);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static struct ipt_target ipt_tos_reg = {
|
||||
.name = "TOS",
|
||||
.target = target,
|
||||
.targetsize = sizeof(struct ipt_tos_target_info),
|
||||
.table = "mangle",
|
||||
.checkentry = checkentry,
|
||||
.me = THIS_MODULE,
|
||||
};
|
||||
|
|
|
@ -73,34 +73,21 @@ static int ipt_ttl_checkentry(const char *tablename,
|
|||
{
|
||||
struct ipt_TTL_info *info = targinfo;
|
||||
|
||||
if (targinfosize != IPT_ALIGN(sizeof(struct ipt_TTL_info))) {
|
||||
printk(KERN_WARNING "ipt_TTL: targinfosize %u != %Zu\n",
|
||||
targinfosize,
|
||||
IPT_ALIGN(sizeof(struct ipt_TTL_info)));
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (strcmp(tablename, "mangle")) {
|
||||
printk(KERN_WARNING "ipt_TTL: can only be called from "
|
||||
"\"mangle\" table, not \"%s\"\n", tablename);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (info->mode > IPT_TTL_MAXMODE) {
|
||||
printk(KERN_WARNING "ipt_TTL: invalid or unknown Mode %u\n",
|
||||
info->mode);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if ((info->mode != IPT_TTL_SET) && (info->ttl == 0))
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static struct ipt_target ipt_TTL = {
|
||||
.name = "TTL",
|
||||
.target = ipt_ttl_target,
|
||||
.targetsize = sizeof(struct ipt_TTL_info),
|
||||
.table = "mangle",
|
||||
.checkentry = ipt_ttl_checkentry,
|
||||
.me = THIS_MODULE,
|
||||
};
|
||||
|
|
|
@ -345,36 +345,30 @@ static int ipt_ulog_checkentry(const char *tablename,
|
|||
{
|
||||
struct ipt_ulog_info *loginfo = (struct ipt_ulog_info *) targinfo;
|
||||
|
||||
if (targinfosize != IPT_ALIGN(sizeof(struct ipt_ulog_info))) {
|
||||
DEBUGP("ipt_ULOG: targinfosize %u != 0\n", targinfosize);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (loginfo->prefix[sizeof(loginfo->prefix) - 1] != '\0') {
|
||||
DEBUGP("ipt_ULOG: prefix term %i\n",
|
||||
loginfo->prefix[sizeof(loginfo->prefix) - 1]);
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (loginfo->qthreshold > ULOG_MAX_QLEN) {
|
||||
DEBUGP("ipt_ULOG: queue threshold %i > MAX_QLEN\n",
|
||||
loginfo->qthreshold);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static struct ipt_target ipt_ulog_reg = {
|
||||
.name = "ULOG",
|
||||
.target = ipt_ulog_target,
|
||||
.targetsize = sizeof(struct ipt_ulog_info),
|
||||
.checkentry = ipt_ulog_checkentry,
|
||||
.me = THIS_MODULE,
|
||||
};
|
||||
|
||||
static struct nf_logger ipt_ulog_logger = {
|
||||
.name = "ipt_ULOG",
|
||||
.logfn = &ipt_logfn,
|
||||
.logfn = ipt_logfn,
|
||||
.me = THIS_MODULE,
|
||||
};
|
||||
|
||||
|
|
|
@ -43,23 +43,10 @@ static int match(const struct sk_buff *skb, const struct net_device *in,
|
|||
return ret;
|
||||
}
|
||||
|
||||
static int checkentry(const char *tablename, const void *ip,
|
||||
void *matchinfo, unsigned int matchsize,
|
||||
unsigned int hook_mask)
|
||||
{
|
||||
if (matchsize != IPT_ALIGN(sizeof(struct ipt_addrtype_info))) {
|
||||
printk(KERN_ERR "ipt_addrtype: invalid size (%u != %Zu)\n",
|
||||
matchsize, IPT_ALIGN(sizeof(struct ipt_addrtype_info)));
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static struct ipt_match addrtype_match = {
|
||||
.name = "addrtype",
|
||||
.match = match,
|
||||
.checkentry = checkentry,
|
||||
.matchsize = sizeof(struct ipt_addrtype_info),
|
||||
.me = THIS_MODULE
|
||||
};
|
||||
|
||||
|
|
|
@ -76,32 +76,21 @@ checkentry(const char *tablename,
|
|||
unsigned int hook_mask)
|
||||
{
|
||||
const struct ipt_ah *ahinfo = matchinfo;
|
||||
const struct ipt_ip *ip = ip_void;
|
||||
|
||||
/* Must specify proto == AH, and no unknown invflags */
|
||||
if (ip->proto != IPPROTO_AH || (ip->invflags & IPT_INV_PROTO)) {
|
||||
duprintf("ipt_ah: Protocol %u != %u\n", ip->proto,
|
||||
IPPROTO_AH);
|
||||
return 0;
|
||||
}
|
||||
if (matchinfosize != IPT_ALIGN(sizeof(struct ipt_ah))) {
|
||||
duprintf("ipt_ah: matchsize %u != %u\n",
|
||||
matchinfosize, IPT_ALIGN(sizeof(struct ipt_ah)));
|
||||
return 0;
|
||||
}
|
||||
/* Must specify no unknown invflags */
|
||||
if (ahinfo->invflags & ~IPT_AH_INV_MASK) {
|
||||
duprintf("ipt_ah: unknown flags %X\n",
|
||||
ahinfo->invflags);
|
||||
duprintf("ipt_ah: unknown flags %X\n", ahinfo->invflags);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static struct ipt_match ah_match = {
|
||||
.name = "ah",
|
||||
.match = &match,
|
||||
.checkentry = &checkentry,
|
||||
.match = match,
|
||||
.matchsize = sizeof(struct ipt_ah),
|
||||
.proto = IPPROTO_AH,
|
||||
.checkentry = checkentry,
|
||||
.me = THIS_MODULE,
|
||||
};
|
||||
|
||||
|
|
|
@ -31,20 +31,10 @@ static int match(const struct sk_buff *skb, const struct net_device *in,
|
|||
return ((iph->tos&IPT_DSCP_MASK) == sh_dscp) ^ info->invert;
|
||||
}
|
||||
|
||||
static int checkentry(const char *tablename, const void *ip,
|
||||
void *matchinfo, unsigned int matchsize,
|
||||
unsigned int hook_mask)
|
||||
{
|
||||
if (matchsize != IPT_ALIGN(sizeof(struct ipt_dscp_info)))
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static struct ipt_match dscp_match = {
|
||||
.name = "dscp",
|
||||
.match = &match,
|
||||
.checkentry = &checkentry,
|
||||
.match = match,
|
||||
.matchsize = sizeof(struct ipt_dscp_info),
|
||||
.me = THIS_MODULE,
|
||||
};
|
||||
|
||||
|
|
|
@ -92,9 +92,6 @@ static int checkentry(const char *tablename, const void *ip_void,
|
|||
const struct ipt_ecn_info *info = matchinfo;
|
||||
const struct ipt_ip *ip = ip_void;
|
||||
|
||||
if (matchsize != IPT_ALIGN(sizeof(struct ipt_ecn_info)))
|
||||
return 0;
|
||||
|
||||
if (info->operation & IPT_ECN_OP_MATCH_MASK)
|
||||
return 0;
|
||||
|
||||
|
@ -113,8 +110,9 @@ static int checkentry(const char *tablename, const void *ip_void,
|
|||
|
||||
static struct ipt_match ecn_match = {
|
||||
.name = "ecn",
|
||||
.match = &match,
|
||||
.checkentry = &checkentry,
|
||||
.match = match,
|
||||
.matchsize = sizeof(struct ipt_ecn_info),
|
||||
.checkentry = checkentry,
|
||||
.me = THIS_MODULE,
|
||||
};
|
||||
|
||||
|
|
|
@ -77,32 +77,21 @@ checkentry(const char *tablename,
|
|||
unsigned int hook_mask)
|
||||
{
|
||||
const struct ipt_esp *espinfo = matchinfo;
|
||||
const struct ipt_ip *ip = ip_void;
|
||||
|
||||
/* Must specify proto == ESP, and no unknown invflags */
|
||||
if (ip->proto != IPPROTO_ESP || (ip->invflags & IPT_INV_PROTO)) {
|
||||
duprintf("ipt_esp: Protocol %u != %u\n", ip->proto,
|
||||
IPPROTO_ESP);
|
||||
return 0;
|
||||
}
|
||||
if (matchinfosize != IPT_ALIGN(sizeof(struct ipt_esp))) {
|
||||
duprintf("ipt_esp: matchsize %u != %u\n",
|
||||
matchinfosize, IPT_ALIGN(sizeof(struct ipt_esp)));
|
||||
return 0;
|
||||
}
|
||||
/* Must specify no unknown invflags */
|
||||
if (espinfo->invflags & ~IPT_ESP_INV_MASK) {
|
||||
duprintf("ipt_esp: unknown flags %X\n",
|
||||
espinfo->invflags);
|
||||
duprintf("ipt_esp: unknown flags %X\n", espinfo->invflags);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static struct ipt_match esp_match = {
|
||||
.name = "esp",
|
||||
.match = &match,
|
||||
.checkentry = &checkentry,
|
||||
.match = match,
|
||||
.matchsize = sizeof(struct ipt_esp),
|
||||
.proto = IPPROTO_ESP,
|
||||
.checkentry = checkentry,
|
||||
.me = THIS_MODULE,
|
||||
};
|
||||
|
||||
|
|
|
@ -512,9 +512,6 @@ hashlimit_checkentry(const char *tablename,
|
|||
{
|
||||
struct ipt_hashlimit_info *r = matchinfo;
|
||||
|
||||
if (matchsize != IPT_ALIGN(sizeof(struct ipt_hashlimit_info)))
|
||||
return 0;
|
||||
|
||||
/* Check for overflow. */
|
||||
if (r->cfg.burst == 0
|
||||
|| user2credits(r->cfg.avg * r->cfg.burst) <
|
||||
|
@ -565,12 +562,13 @@ hashlimit_destroy(void *matchinfo, unsigned int matchsize)
|
|||
htable_put(r->hinfo);
|
||||
}
|
||||
|
||||
static struct ipt_match ipt_hashlimit = {
|
||||
.name = "hashlimit",
|
||||
.match = hashlimit_match,
|
||||
.checkentry = hashlimit_checkentry,
|
||||
.destroy = hashlimit_destroy,
|
||||
.me = THIS_MODULE
|
||||
static struct ipt_match ipt_hashlimit = {
|
||||
.name = "hashlimit",
|
||||
.match = hashlimit_match,
|
||||
.matchsize = sizeof(struct ipt_hashlimit_info),
|
||||
.checkentry = hashlimit_checkentry,
|
||||
.destroy = hashlimit_destroy,
|
||||
.me = THIS_MODULE
|
||||
};
|
||||
|
||||
/* PROC stuff */
|
||||
|
|
|
@ -62,27 +62,12 @@ match(const struct sk_buff *skb,
|
|||
return 1;
|
||||
}
|
||||
|
||||
static int check(const char *tablename,
|
||||
const void *inf,
|
||||
void *matchinfo,
|
||||
unsigned int matchsize,
|
||||
unsigned int hook_mask)
|
||||
{
|
||||
/* verify size */
|
||||
if (matchsize != IPT_ALIGN(sizeof(struct ipt_iprange_info)))
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static struct ipt_match iprange_match =
|
||||
{
|
||||
.list = { NULL, NULL },
|
||||
.name = "iprange",
|
||||
.match = &match,
|
||||
.checkentry = &check,
|
||||
.destroy = NULL,
|
||||
.me = THIS_MODULE
|
||||
static struct ipt_match iprange_match = {
|
||||
.name = "iprange",
|
||||
.match = match,
|
||||
.matchsize = sizeof(struct ipt_iprange_info),
|
||||
.destroy = NULL,
|
||||
.me = THIS_MODULE
|
||||
};
|
||||
|
||||
static int __init init(void)
|
||||
|
|
|
@ -153,40 +153,19 @@ match_v1(const struct sk_buff *skb,
|
|||
return ports_match_v1(multiinfo, ntohs(pptr[0]), ntohs(pptr[1]));
|
||||
}
|
||||
|
||||
/* Called when user tries to insert an entry of this type. */
|
||||
static int
|
||||
checkentry(const char *tablename,
|
||||
const void *ip,
|
||||
void *matchinfo,
|
||||
unsigned int matchsize,
|
||||
unsigned int hook_mask)
|
||||
{
|
||||
return (matchsize == IPT_ALIGN(sizeof(struct ipt_multiport)));
|
||||
}
|
||||
|
||||
static int
|
||||
checkentry_v1(const char *tablename,
|
||||
const void *ip,
|
||||
void *matchinfo,
|
||||
unsigned int matchsize,
|
||||
unsigned int hook_mask)
|
||||
{
|
||||
return (matchsize == IPT_ALIGN(sizeof(struct ipt_multiport_v1)));
|
||||
}
|
||||
|
||||
static struct ipt_match multiport_match = {
|
||||
.name = "multiport",
|
||||
.revision = 0,
|
||||
.match = &match,
|
||||
.checkentry = &checkentry,
|
||||
.match = match,
|
||||
.matchsize = sizeof(struct ipt_multiport),
|
||||
.me = THIS_MODULE,
|
||||
};
|
||||
|
||||
static struct ipt_match multiport_match_v1 = {
|
||||
.name = "multiport",
|
||||
.revision = 1,
|
||||
.match = &match_v1,
|
||||
.checkentry = &checkentry_v1,
|
||||
.match = match_v1,
|
||||
.matchsize = sizeof(struct ipt_multiport_v1),
|
||||
.me = THIS_MODULE,
|
||||
};
|
||||
|
||||
|
|
|
@ -59,31 +59,20 @@ checkentry(const char *tablename,
|
|||
{
|
||||
const struct ipt_owner_info *info = matchinfo;
|
||||
|
||||
if (hook_mask
|
||||
& ~((1 << NF_IP_LOCAL_OUT) | (1 << NF_IP_POST_ROUTING))) {
|
||||
printk("ipt_owner: only valid for LOCAL_OUT or POST_ROUTING.\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (matchsize != IPT_ALIGN(sizeof(struct ipt_owner_info))) {
|
||||
printk("Matchsize %u != %Zu\n", matchsize,
|
||||
IPT_ALIGN(sizeof(struct ipt_owner_info)));
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (info->match & (IPT_OWNER_PID|IPT_OWNER_SID|IPT_OWNER_COMM)) {
|
||||
printk("ipt_owner: pid, sid and command matching "
|
||||
"not supported anymore\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static struct ipt_match owner_match = {
|
||||
.name = "owner",
|
||||
.match = &match,
|
||||
.checkentry = &checkentry,
|
||||
.match = match,
|
||||
.matchsize = sizeof(struct ipt_owner_info),
|
||||
.hooks = (1 << NF_IP_LOCAL_OUT) | (1 << NF_IP_POST_ROUTING),
|
||||
.checkentry = checkentry,
|
||||
.me = THIS_MODULE,
|
||||
};
|
||||
|
||||
|
|
|
@ -125,11 +125,6 @@ static int checkentry(const char *tablename, const void *ip_void,
|
|||
{
|
||||
struct ipt_policy_info *info = matchinfo;
|
||||
|
||||
if (matchsize != IPT_ALIGN(sizeof(*info))) {
|
||||
printk(KERN_ERR "ipt_policy: matchsize %u != %zu\n",
|
||||
matchsize, IPT_ALIGN(sizeof(*info)));
|
||||
return 0;
|
||||
}
|
||||
if (!(info->flags & (IPT_POLICY_MATCH_IN|IPT_POLICY_MATCH_OUT))) {
|
||||
printk(KERN_ERR "ipt_policy: neither incoming nor "
|
||||
"outgoing policy selected\n");
|
||||
|
@ -158,6 +153,7 @@ static int checkentry(const char *tablename, const void *ip_void,
|
|||
static struct ipt_match policy_match = {
|
||||
.name = "policy",
|
||||
.match = match,
|
||||
.matchsize = sizeof(struct ipt_policy_info),
|
||||
.checkentry = checkentry,
|
||||
.me = THIS_MODULE,
|
||||
};
|
||||
|
|
|
@ -670,8 +670,6 @@ checkentry(const char *tablename,
|
|||
if(debug) printk(KERN_INFO RECENT_NAME ": checkentry() entered.\n");
|
||||
#endif
|
||||
|
||||
if (matchsize != IPT_ALIGN(sizeof(struct ipt_recent_info))) return 0;
|
||||
|
||||
/* seconds and hit_count only valid for CHECK/UPDATE */
|
||||
if(info->check_set & IPT_RECENT_SET) { flag++; if(info->seconds || info->hit_count) return 0; }
|
||||
if(info->check_set & IPT_RECENT_REMOVE) { flag++; if(info->seconds || info->hit_count) return 0; }
|
||||
|
@ -951,12 +949,13 @@ destroy(void *matchinfo, unsigned int matchsize)
|
|||
/* This is the structure we pass to ipt_register to register our
|
||||
* module with iptables.
|
||||
*/
|
||||
static struct ipt_match recent_match = {
|
||||
.name = "recent",
|
||||
.match = &match,
|
||||
.checkentry = &checkentry,
|
||||
.destroy = &destroy,
|
||||
.me = THIS_MODULE
|
||||
static struct ipt_match recent_match = {
|
||||
.name = "recent",
|
||||
.match = match,
|
||||
.matchsize = sizeof(struct ipt_recent_info),
|
||||
.checkentry = checkentry,
|
||||
.destroy = destroy,
|
||||
.me = THIS_MODULE
|
||||
};
|
||||
|
||||
/* Kernel module initialization. */
|
||||
|
|
|
@ -31,23 +31,10 @@ match(const struct sk_buff *skb,
|
|||
return (skb->nh.iph->tos == info->tos) ^ info->invert;
|
||||
}
|
||||
|
||||
static int
|
||||
checkentry(const char *tablename,
|
||||
const void *ip,
|
||||
void *matchinfo,
|
||||
unsigned int matchsize,
|
||||
unsigned int hook_mask)
|
||||
{
|
||||
if (matchsize != IPT_ALIGN(sizeof(struct ipt_tos_info)))
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static struct ipt_match tos_match = {
|
||||
.name = "tos",
|
||||
.match = &match,
|
||||
.checkentry = &checkentry,
|
||||
.match = match,
|
||||
.matchsize = sizeof(struct ipt_tos_info),
|
||||
.me = THIS_MODULE,
|
||||
};
|
||||
|
||||
|
|
|
@ -47,20 +47,10 @@ static int match(const struct sk_buff *skb, const struct net_device *in,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int checkentry(const char *tablename, const void *ip,
|
||||
void *matchinfo, unsigned int matchsize,
|
||||
unsigned int hook_mask)
|
||||
{
|
||||
if (matchsize != IPT_ALIGN(sizeof(struct ipt_ttl_info)))
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static struct ipt_match ttl_match = {
|
||||
.name = "ttl",
|
||||
.match = &match,
|
||||
.checkentry = &checkentry,
|
||||
.match = match,
|
||||
.matchsize = sizeof(struct ipt_ttl_info),
|
||||
.me = THIS_MODULE,
|
||||
};
|
||||
|
||||
|
|
Loading…
Reference in a new issue