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Edit File : nf_osf.h \| Size : 1.90 KB
#ifndef _NF_OSF_H #define _NF_OSF_H #include <linux/types.h> #define MAXGENRELEN 32 #define NF_OSF_GENRE (1 << 0) #define NF_OSF_TTL (1 << 1) #define NF_OSF_LOG (1 << 2) #define NF_OSF_INVERT (1 << 3) #define NF_OSF_LOGLEVEL_ALL 0 /* log all matched fingerprints / #define NF_OSF_LOGLEVEL_FIRST 1 / log only the first matced fingerprint / #define NF_OSF_LOGLEVEL_ALL_KNOWN 2 / do not log unknown packets / #define NF_OSF_TTL_TRUE 0 / True ip and fingerprint TTL comparison / / Do not compare ip and fingerprint TTL at all / #define NF_OSF_TTL_NOCHECK 2 / Wildcard MSS (kind of). * It is used to implement a state machine for the different wildcard values * of the MSS and window sizes. / struct nf_osf_wc { __u32 wc; __u32 val; }; / This struct represents IANA options * http://www.iana.org/assignments/tcp-parameters / struct nf_osf_opt { __u16 kind, length; struct nf_osf_wc wc; }; struct nf_osf_info { char genre[MAXGENRELEN]; __u32 len; __u32 flags; __u32 loglevel; __u32 ttl; }; struct nf_osf_user_finger { struct nf_osf_wc wss; __u8 ttl, df; __u16 ss, mss; __u16 opt_num; char genre[MAXGENRELEN]; char version[MAXGENRELEN]; char subtype[MAXGENRELEN]; / MAX_IPOPTLEN is maximum if all options are NOPs or EOLs / struct nf_osf_opt opt[MAX_IPOPTLEN]; }; struct nf_osf_nlmsg { struct nf_osf_user_finger f; struct iphdr ip; struct tcphdr tcp; }; / Defines for IANA option kinds / enum iana_options { OSFOPT_EOL = 0, / End of options / OSFOPT_NOP, / NOP / OSFOPT_MSS, / Maximum segment size / OSFOPT_WSO, / Window scale option / OSFOPT_SACKP, / SACK permitted / OSFOPT_SACK, / SACK / OSFOPT_ECHO, OSFOPT_ECHOREPLY, OSFOPT_TS, / Timestamp option / OSFOPT_POCP, / Partial Order Connection Permitted / OSFOPT_POSP, / Partial Order Service Profile / / Others are not used in the current OSF / OSFOPT_EMPTY = 255, }; #endif / _NF_OSF_H */ Back

Edit File : nf_osf.h | Size : 1.90 KB

#ifndef _NF_OSF_H
#define _NF_OSF_H

#include <linux/types.h>

#define MAXGENRELEN	32

#define NF_OSF_GENRE	(1 << 0)
#define NF_OSF_TTL	(1 << 1)
#define NF_OSF_LOG	(1 << 2)
#define NF_OSF_INVERT	(1 << 3)

#define NF_OSF_LOGLEVEL_ALL		0	/* log all matched fingerprints */
#define NF_OSF_LOGLEVEL_FIRST		1	/* log only the first matced fingerprint */
#define NF_OSF_LOGLEVEL_ALL_KNOWN	2	/* do not log unknown packets */

#define NF_OSF_TTL_TRUE			0	/* True ip and fingerprint TTL comparison */

/* Do not compare ip and fingerprint TTL at all */
#define NF_OSF_TTL_NOCHECK		2

/* Wildcard MSS (kind of).
 * It is used to implement a state machine for the different wildcard values
 * of the MSS and window sizes.
 */
struct nf_osf_wc {
	__u32	wc;
	__u32	val;
};

/* This struct represents IANA options
 * http://www.iana.org/assignments/tcp-parameters
 */
struct nf_osf_opt {
	__u16			kind, length;
	struct nf_osf_wc	wc;
};

struct nf_osf_info {
	char	genre[MAXGENRELEN];
	__u32	len;
	__u32	flags;
	__u32	loglevel;
	__u32	ttl;
};

struct nf_osf_user_finger {
	struct nf_osf_wc	wss;

__u8	ttl, df;
	__u16	ss, mss;
	__u16	opt_num;

char	genre[MAXGENRELEN];
	char	version[MAXGENRELEN];
	char	subtype[MAXGENRELEN];

/* MAX_IPOPTLEN is maximum if all options are NOPs or EOLs */
	struct nf_osf_opt	opt[MAX_IPOPTLEN];
};

struct nf_osf_nlmsg {
	struct nf_osf_user_finger	f;
	struct iphdr			ip;
	struct tcphdr			tcp;
};

/* Defines for IANA option kinds */
enum iana_options {
	OSFOPT_EOL = 0,		/* End of options */
	OSFOPT_NOP,		/* NOP */
	OSFOPT_MSS,		/* Maximum segment size */
	OSFOPT_WSO,		/* Window scale option */
	OSFOPT_SACKP,		/* SACK permitted */
	OSFOPT_SACK,		/* SACK */
	OSFOPT_ECHO,
	OSFOPT_ECHOREPLY,
	OSFOPT_TS,		/* Timestamp option */
	OSFOPT_POCP,		/* Partial Order Connection Permitted */
	OSFOPT_POSP,		/* Partial Order Service Profile */

/* Others are not used in the current OSF */
	OSFOPT_EMPTY = 255,
};

#endif /* _NF_OSF_H */

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