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-rw-r--r--drivers/interceptor/sshinet.h233
1 files changed, 233 insertions, 0 deletions
diff --git a/drivers/interceptor/sshinet.h b/drivers/interceptor/sshinet.h
new file mode 100644
index 0000000..ac18c53
--- /dev/null
+++ b/drivers/interceptor/sshinet.h
@@ -0,0 +1,233 @@
+/* Netfilter Driver for IPSec VPN Client
+ *
+ * Copyright(c) 2012 Samsung Electronics
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/*
+ * sshinet.h
+ *
+ * Inet API.
+ *
+ */
+
+#ifndef SSHINET_H
+#define SSHINET_H
+
+#include "sshgetput.h"
+
+/*************************** Ethernet definitions ***************************/
+
+/* Etherenet header things we need */
+#define SSH_ETHERH_HDRLEN 14
+#define SSH_ETHERH_OFS_DST 0
+#define SSH_ETHERH_OFS_SRC 6
+#define SSH_ETHERH_OFS_TYPE 12
+#define SSH_ETHERH_ADDRLEN 6
+
+/* Known values for the ethernet type field. The same values are used for
+ both ethernet (rfc894) and IEEE 802 encapsulation (the type will just
+ be in a different position in the header). */
+#define SSH_ETHERTYPE_IP 0x0800 /* IPv4, as per rfc894 */
+#define SSH_ETHERTYPE_ARP 0x0806 /* ARP, as per rfc826 */
+#define SSH_ETHERTYPE_IPv6 0x86dd /* IPv6, as per rfc1972 */
+
+
+/***************************** SshIpAddr stuff ******************************/
+
+typedef enum {
+ SSH_IP_TYPE_NONE = 0,
+ SSH_IP_TYPE_IPV4 = 1,
+ SSH_IP_TYPE_IPV6 = 2
+} SshIpAddrType;
+
+#if defined(WITH_IPV6)
+/* An IPv6 link-local address scope ID. */
+struct SshScopeIdRec
+{
+ union
+ {
+ SshUInt32 ui32;
+ } scope_id_union;
+};
+
+typedef struct SshScopeIdRec SshScopeIdStruct;
+typedef struct SshScopeIdRec *SshScopeId;
+
+#endif /* WITH_IPV6 */
+
+#if !defined(WITH_IPV6)
+#define SSH_IP_ADDR_SIZE 4
+#define SSH_IP_ADDR_STRING_SIZE 32
+#else /* WITH_IPV6 */
+#define SSH_IP_ADDR_SIZE 16
+#define SSH_IP_ADDR_STRING_SIZE 64
+#endif /* !WITH_IPV6 */
+
+typedef struct SshIpAddrRec
+{
+ /* Note: All fields of this data structure are private, and should
+ not be accessed except using the macros and functions defined in
+ this header. They should never be accessed directly; the
+ internal definition of this structure is subject to change
+ without notice. */
+ SshUInt8 type; /* KEEP type first if changing rest of the contents */
+ SshUInt8 mask_len;
+
+ /* There is a hole of 16 bits here */
+
+ /* For optimised mask comparison routine _addr_data has to be 32-bit
+ aligned so it can be read as words on machines requiring
+ alignment */
+ union {
+ unsigned char _addr_data[SSH_IP_ADDR_SIZE];
+ SshUInt32 _addr_align;
+ } addr_union;
+
+#define addr_data addr_union._addr_data
+
+#if defined(WITH_IPV6)
+ SshScopeIdStruct scope_id;
+#endif /* WITH_IPV6 */
+
+} *SshIpAddr, SshIpAddrStruct;
+
+#define SSH_IP_DEFINED(ip_addr) ((ip_addr)->type != SSH_IP_TYPE_NONE)
+#define SSH_IP_IS4(ip_addr) ((ip_addr)->type == SSH_IP_TYPE_IPV4)
+#define SSH_IP_IS6(ip_addr) ((ip_addr)->type == SSH_IP_TYPE_IPV6)
+
+#define SSH_IP_ADDR_LEN(ip_addr) \
+ (SSH_PREDICT_TRUE(SSH_IP_IS4(ip_addr))\
+ ? (4) \
+ : (SSH_IP_IS6(ip_addr) \
+ ? (16) \
+ : 0))
+
+/* Make given IP address undefined. */
+#define SSH_IP_UNDEFINE(IPADDR) \
+do { \
+ (IPADDR)->type = SSH_IP_TYPE_NONE; \
+} while (0)
+
+
+#if defined(WITH_IPV6)
+/* Decode, that is fill given 'ipaddr', with given 'type', 'bytes' and
+ 'masklen' information. */
+#define __SSH_IP_MASK_DECODE(IPADDR,TYPE,BYTES,BYTELEN,MASKLEN) \
+ do { \
+ (IPADDR)->type = (TYPE); \
+ memmove((IPADDR)->addr_data, (BYTES), (BYTELEN)); \
+ memset(&(IPADDR)->scope_id, 0, sizeof((IPADDR)->scope_id)); \
+ (IPADDR)->mask_len = (MASKLEN); \
+ } while (0)
+#else /* WITH_IPV6 */
+#define __SSH_IP_MASK_DECODE(IPADDR,TYPE,BYTES,BYTELEN,MASKLEN) \
+ do { \
+ (IPADDR)->type = (TYPE); \
+ memmove((IPADDR)->addr_data, (BYTES), (BYTELEN)); \
+ (IPADDR)->mask_len = (MASKLEN); \
+ } while (0)
+#endif /* WITH_IPV6 */
+
+/* Encode, that is copy from 'ipaddr' into 'bytes' and 'maskptr'. The
+ input 'ipaddr' needs to be of given 'type'. It is an fatal error
+ to call this for invalid address type. */
+#define __SSH_IP_MASK_ENCODE(IPADDR,TYPE,BYTES,BYTELEN,MASKPTR) \
+ do { \
+ SSH_VERIFY((IPADDR)->type == (TYPE)); \
+ memmove((BYTES), (IPADDR)->addr_data, (BYTELEN)); \
+ if (SSH_PREDICT_FALSE(MASKPTR)) \
+ *((SshUInt32 *) (MASKPTR)) = (IPADDR)->mask_len; \
+ } while (0)
+
+/* IPv4 Address manipulation */
+#define SSH_IP4_ENCODE(ip_addr,bytes) \
+ __SSH_IP_MASK_ENCODE(ip_addr,SSH_IP_TYPE_IPV4,bytes,4,NULL)
+#define SSH_IP4_DECODE(ip_addr,bytes) \
+ __SSH_IP_MASK_DECODE(ip_addr,SSH_IP_TYPE_IPV4,bytes,4,32)
+
+/* IPv6 address manipulation */
+#define SSH_IP6_ENCODE(ip_addr,bytes) \
+ __SSH_IP_MASK_ENCODE(ip_addr,SSH_IP_TYPE_IPV6,bytes,16,NULL)
+
+#if !defined(WITH_IPV6)
+#define SSH_IP6_DECODE(ip_addr,bytes) SSH_IP_UNDEFINE(ip_addr)
+#else /* WITH_IPV6 */
+#define SSH_IP6_DECODE(ip_addr,bytes) \
+ __SSH_IP_MASK_DECODE(ip_addr,SSH_IP_TYPE_IPV6,bytes,16,128)
+#endif /* !WITH_IPV6 */
+
+#define SSH_IP_MASK_LEN(ip_addr) ((ip_addr)->mask_len)
+
+#if defined(WITH_IPV6)
+#define SSH_IP6_SCOPE_ID(ip_addr) ((ip_addr)->scope_id.scope_id_union.ui32)
+#endif /* WITH_IPV6 */
+
+/*********************** Definitions for IPv4 packets ***********************/
+
+
+/* IPv4 header lengths. */
+#define SSH_IPH4_HDRLEN 20
+#define SSH_IPH4_HLEN(ucp) SSH_GET_4BIT_LOW(ucp)
+#define SSH_IPH4_LEN(ucp) SSH_GET_16BIT((ucp) + 2)
+#define SSH_IPH4_SRC(ipaddr, ucp) SSH_IP4_DECODE((ipaddr), (ucp) + 12)
+
+/*********************** Definitions for IPv6 packets ***********************/
+
+/* IPv6 header length. Extension headers are not counted in IPv6
+ header */
+#define SSH_IPH6_HDRLEN 40
+
+#define SSH_IPH6_OFS_LEN 4
+#define SSH_IPH6_OFS_NH 6
+
+#define SSH_IPH6_ADDRLEN 16
+#define SSH_IPH6_OFS_SRC 8
+
+#define SSH_IP6_WORD0_TO_INT(ip_addr) SSH_GET_32BIT((ip_addr)->addr_data)
+#define SSH_IP6_WORD1_TO_INT(ip_addr) SSH_GET_32BIT((ip_addr)->addr_data + 4)
+#define SSH_IP6_WORD2_TO_INT(ip_addr) SSH_GET_32BIT((ip_addr)->addr_data + 8)
+#define SSH_IP6_WORD3_TO_INT(ip_addr) SSH_GET_32BIT((ip_addr)->addr_data + 12)
+
+#define SSH_IPH6_LEN(ucp) SSH_GET_16BIT((ucp) + SSH_IPH6_OFS_LEN)
+#define SSH_IPH6_NH(ucp) SSH_GET_8BIT((ucp) + SSH_IPH6_OFS_NH)
+#define SSH_IPH6_SRC(ipaddr, ucp) SSH_IP6_DECODE((ipaddr), \
+ (ucp) + SSH_IPH6_OFS_SRC)
+
+/****************** Definitions for IPv6 extension headers ******************/
+
+#define SSH_IP6_EXT_COMMON_NH(ucp) SSH_GET_8BIT((ucp))
+#define SSH_IP6_EXT_COMMON_LEN(ucp) SSH_GET_8BIT((ucp) + 1)
+#define SSH_IP6_EXT_COMMON_LENB(ucp) \
+ ((SSH_IP6_EXT_COMMON_LEN((ucp)) + 1) << 3)
+
+/*************************** Link definitions *******************************/
+
+/* Reserved value for invalid interface index. */
+#define SSH_INVALID_IFNUM 0xffffffff
+
+/***************************** Helper functions *****************************/
+
+/* Sets all rightmost bits after keeping `keep_bits' bits on the left
+ to the value specified by `value'. */
+void ssh_ipaddr_set_bits(SshIpAddr result, SshIpAddr ip,
+ unsigned int keep_bits, unsigned int value);
+
+/* Prints the IP address into the buffer in string format. If the buffer
+ is too short, the address is truncated. This returns `buf'. */
+unsigned char *ssh_ipaddr_print(const SshIpAddr ip, unsigned char *buf,
+ size_t buflen);
+
+/* Prints the IP address into the buffer in string format. If the buffer
+ is too short, the address is truncated. This returns `buf'. */
+void ssh_ipaddr_ipv4_print(const unsigned char *data,
+ unsigned char *buf, size_t buflen);
+void ssh_ipaddr_ipv6_print(const unsigned char *data,
+ unsigned char *buf, size_t buflen,
+ SshUInt32 scope);
+
+#endif /* SSHINET_H */
generated by cgit v1.1 at 2024-09-21 07:09:54 +0000