| #ifndef _NF_CONNTRACK_FTP_H |
| #define _NF_CONNTRACK_FTP_H |
| /* FTP tracking. */ |
| |
| /* This enum is exposed to userspace */ |
| enum nf_ct_ftp_type { |
| /* PORT command from client */ |
| NF_CT_FTP_PORT, |
| /* PASV response from server */ |
| NF_CT_FTP_PASV, |
| /* EPRT command from client */ |
| NF_CT_FTP_EPRT, |
| /* EPSV response from server */ |
| NF_CT_FTP_EPSV, |
| }; |
| |
| #ifdef __KERNEL__ |
| |
| #define FTP_PORT 21 |
| |
| #define NUM_SEQ_TO_REMEMBER 2 |
| /* This structure exists only once per master */ |
| struct nf_ct_ftp_master { |
| /* Valid seq positions for cmd matching after newline */ |
| u_int32_t seq_aft_nl[IP_CT_DIR_MAX][NUM_SEQ_TO_REMEMBER]; |
| /* 0 means seq_match_aft_nl not set */ |
| int seq_aft_nl_num[IP_CT_DIR_MAX]; |
| }; |
| |
| struct nf_conntrack_expect; |
| |
| /* For NAT to hook in when we find a packet which describes what other |
| * connection we should expect. */ |
| extern unsigned int (*nf_nat_ftp_hook)(struct sk_buff *skb, |
| enum ip_conntrack_info ctinfo, |
| enum nf_ct_ftp_type type, |
| unsigned int matchoff, |
| unsigned int matchlen, |
| struct nf_conntrack_expect *exp); |
| #endif /* __KERNEL__ */ |
| |
| #endif /* _NF_CONNTRACK_FTP_H */ |
