| 1 | /** @file
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| 2 | The definitions related to IPsec protocol implementation.
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| 3 |
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| 4 | Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>
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| 5 |
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| 6 | This program and the accompanying materials
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| 7 | are licensed and made available under the terms and conditions of the BSD License
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| 8 | which accompanies this distribution. The full text of the license may be found at
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| 9 | http://opensource.org/licenses/bsd-license.php.
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| 10 |
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| 11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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| 12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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| 13 |
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| 14 | **/
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| 15 |
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| 16 | #ifndef _IP_SEC_IMPL_H_
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| 17 | #define _IP_SEC_IMPL_H_
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| 18 |
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| 19 | #include <Uefi.h>
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| 20 | #include <Library/UefiLib.h>
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| 21 | #include <Library/NetLib.h>
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| 22 | #include <Library/BaseMemoryLib.h>
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| 23 | #include <Library/UefiBootServicesTableLib.h>
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| 24 | #include <Library/MemoryAllocationLib.h>
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| 25 | #include <Protocol/IpSec.h>
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| 26 | #include <Protocol/IpSecConfig.h>
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| 27 | #include <Protocol/Dpc.h>
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| 28 | #include <Protocol/ComponentName.h>
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| 29 | #include <Protocol/ComponentName2.h>
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| 30 |
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| 31 | typedef struct _IPSEC_PRIVATE_DATA IPSEC_PRIVATE_DATA;
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| 32 | typedef struct _IPSEC_SPD_ENTRY IPSEC_SPD_ENTRY;
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| 33 | typedef struct _IPSEC_PAD_ENTRY IPSEC_PAD_ENTRY;
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| 34 | typedef struct _IPSEC_SPD_DATA IPSEC_SPD_DATA;
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| 35 |
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| 36 | #define IPSEC_PRIVATE_DATA_SIGNATURE SIGNATURE_32 ('I', 'P', 'S', 'E')
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| 37 |
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| 38 | #define IPSEC_PRIVATE_DATA_FROM_IPSEC(a) CR (a, IPSEC_PRIVATE_DATA, IpSec, IPSEC_PRIVATE_DATA_SIGNATURE)
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| 39 | #define IPSEC_PRIVATE_DATA_FROM_UDP4LIST(a) CR (a, IPSEC_PRIVATE_DATA, Udp4List, IPSEC_PRIVATE_DATA_SIGNATURE)
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| 40 | #define IPSEC_PRIVATE_DATA_FROM_UDP6LIST(a) CR (a, IPSEC_PRIVATE_DATA, Udp6List, IPSEC_PRIVATE_DATA_SIGNATURE)
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| 41 | #define IPSEC_UDP_SERVICE_FROM_LIST(a) BASE_CR (a, IKE_UDP_SERVICE, List)
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| 42 | #define IPSEC_SPD_ENTRY_FROM_LIST(a) BASE_CR (a, IPSEC_SPD_ENTRY, List)
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| 43 | #define IPSEC_SAD_ENTRY_FROM_LIST(a) BASE_CR (a, IPSEC_SAD_ENTRY, List)
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| 44 | #define IPSEC_PAD_ENTRY_FROM_LIST(a) BASE_CR (a, IPSEC_PAD_ENTRY, List)
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| 45 | #define IPSEC_SAD_ENTRY_FROM_SPD(a) BASE_CR (a, IPSEC_SAD_ENTRY, BySpd)
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| 46 |
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| 47 | #define IPSEC_STATUS_DISABLED 0
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| 48 | #define IPSEC_STATUS_ENABLED 1
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| 49 | #define IPSEC_ESP_PROTOCOL 50
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| 50 | #define IPSEC_AH_PROTOCOL 51
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| 51 | #define IPSEC_DEFAULT_VARIABLE_SIZE 0x100
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| 52 |
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| 53 | //
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| 54 | // Internal Structure Definition
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| 55 | //
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| 56 | #pragma pack(1)
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| 57 | typedef struct _EFI_AH_HEADER {
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| 58 | UINT8 NextHeader;
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| 59 | UINT8 PayloadLen;
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| 60 | UINT16 Reserved;
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| 61 | UINT32 Spi;
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| 62 | UINT32 SequenceNumber;
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| 63 | } EFI_AH_HEADER;
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| 64 |
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| 65 | typedef struct _EFI_ESP_HEADER {
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| 66 | UINT32 Spi;
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| 67 | UINT32 SequenceNumber;
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| 68 | } EFI_ESP_HEADER;
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| 69 |
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| 70 | typedef struct _EFI_ESP_TAIL {
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| 71 | UINT8 PaddingLength;
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| 72 | UINT8 NextHeader;
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| 73 | } EFI_ESP_TAIL;
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| 74 | #pragma pack()
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| 75 |
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| 76 | struct _IPSEC_SPD_DATA {
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| 77 | CHAR16 Name[100];
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| 78 | UINT32 PackageFlag;
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| 79 | EFI_IPSEC_ACTION Action;
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| 80 | EFI_IPSEC_PROCESS_POLICY *ProcessingPolicy;
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| 81 | LIST_ENTRY Sas;
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| 82 | };
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| 83 |
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| 84 | struct _IPSEC_SPD_ENTRY {
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| 85 | EFI_IPSEC_SPD_SELECTOR *Selector;
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| 86 | IPSEC_SPD_DATA *Data;
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| 87 | LIST_ENTRY List;
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| 88 | };
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| 89 |
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| 90 | typedef struct _IPSEC_SAD_DATA {
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| 91 | EFI_IPSEC_MODE Mode;
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| 92 | UINT64 SequenceNumber;
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| 93 | UINT8 AntiReplayWindowSize;
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| 94 | UINT64 AntiReplayBitmap[4]; // bitmap for received packet
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| 95 | EFI_IPSEC_ALGO_INFO AlgoInfo;
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| 96 | EFI_IPSEC_SA_LIFETIME SaLifetime;
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| 97 | UINT32 PathMTU;
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| 98 | IPSEC_SPD_ENTRY *SpdEntry;
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| 99 | EFI_IPSEC_SPD_SELECTOR *SpdSelector;
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| 100 | BOOLEAN ESNEnabled; // Extended (64-bit) SN enabled
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| 101 | BOOLEAN ManualSet;
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| 102 | EFI_IP_ADDRESS TunnelDestAddress;
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| 103 | EFI_IP_ADDRESS TunnelSourceAddress;
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| 104 | } IPSEC_SAD_DATA;
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| 105 |
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| 106 | typedef struct _IPSEC_SAD_ENTRY {
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| 107 | EFI_IPSEC_SA_ID *Id;
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| 108 | IPSEC_SAD_DATA *Data;
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| 109 | LIST_ENTRY List;
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| 110 | LIST_ENTRY BySpd; // Linked on IPSEC_SPD_DATA.Sas
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| 111 | } IPSEC_SAD_ENTRY;
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| 112 |
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| 113 | struct _IPSEC_PAD_ENTRY {
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| 114 | EFI_IPSEC_PAD_ID *Id;
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| 115 | EFI_IPSEC_PAD_DATA *Data;
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| 116 | LIST_ENTRY List;
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| 117 | };
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| 118 |
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| 119 | typedef struct _IPSEC_RECYCLE_CONTEXT {
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| 120 | EFI_IPSEC_FRAGMENT_DATA *FragmentTable;
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| 121 | UINT8 *PayloadBuffer;
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| 122 | } IPSEC_RECYCLE_CONTEXT;
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| 123 |
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| 124 | //
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| 125 | // Struct used to store the Hash and its data.
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| 126 | //
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| 127 | typedef struct {
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| 128 | UINTN DataSize;
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| 129 | UINT8 *Data;
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| 130 | } HASH_DATA_FRAGMENT;
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| 131 |
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| 132 | struct _IPSEC_PRIVATE_DATA {
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| 133 | UINT32 Signature;
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| 134 | EFI_HANDLE Handle; // Virtual handle to install private prtocol
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| 135 | EFI_HANDLE ImageHandle;
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| 136 | EFI_IPSEC2_PROTOCOL IpSec;
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| 137 | EFI_IPSEC_CONFIG_PROTOCOL IpSecConfig;
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| 138 | BOOLEAN SetBySelf;
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| 139 | LIST_ENTRY Udp4List;
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| 140 | UINTN Udp4Num;
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| 141 | LIST_ENTRY Udp6List;
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| 142 | UINTN Udp6Num;
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| 143 | LIST_ENTRY Ikev1SessionList;
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| 144 | LIST_ENTRY Ikev1EstablishedList;
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| 145 | LIST_ENTRY Ikev2SessionList;
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| 146 | LIST_ENTRY Ikev2EstablishedList;
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| 147 | BOOLEAN IsIPsecDisabling;
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| 148 | };
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| 149 |
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| 150 | /**
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| 151 | This function processes the inbound traffic with IPsec.
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| 152 |
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| 153 | It checks the received packet security property, trims the ESP/AH header, and then
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| 154 | returns without an IPsec protected IP Header and FragmentTable.
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| 155 |
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| 156 | @param[in] IpVersion The version of IP.
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| 157 | @param[in, out] IpHead Points to IP header containing the ESP/AH header
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| 158 | to be trimed on input, and without ESP/AH header
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| 159 | on return.
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| 160 | @param[in, out] LastHead The Last Header in IP header on return.
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| 161 | @param[in, out] OptionsBuffer Pointer to the options buffer.
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| 162 | @param[in, out] OptionsLength Length of the options buffer.
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| 163 | @param[in, out] FragmentTable Pointer to a list of fragments in form of IPsec
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| 164 | protected on input, and without IPsec protected
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| 165 | on return.
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| 166 | @param[in, out] FragmentCount The number of fragments.
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| 167 | @param[out] SpdEntry Pointer to contain the address of SPD entry on return.
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| 168 | @param[out] RecycleEvent The event for recycling of resources.
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| 169 |
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| 170 | @retval EFI_SUCCESS The operation was successful.
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| 171 | @retval EFI_UNSUPPORTED The IPSEC protocol is not supported.
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| 172 |
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| 173 | **/
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| 174 | EFI_STATUS
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| 175 | IpSecProtectInboundPacket (
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| 176 | IN UINT8 IpVersion,
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| 177 | IN OUT VOID *IpHead,
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| 178 | IN OUT UINT8 *LastHead,
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| 179 | IN OUT VOID **OptionsBuffer,
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| 180 | IN OUT UINT32 *OptionsLength,
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| 181 | IN OUT EFI_IPSEC_FRAGMENT_DATA **FragmentTable,
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| 182 | IN OUT UINT32 *FragmentCount,
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| 183 | OUT EFI_IPSEC_SPD_SELECTOR **SpdEntry,
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| 184 | OUT EFI_EVENT *RecycleEvent
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| 185 | );
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| 186 |
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| 187 |
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| 188 | /**
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| 189 | This fucntion processes the output traffic with IPsec.
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| 190 |
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| 191 | It protected the sending packet by encrypting it payload and inserting ESP/AH header
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| 192 | in the orginal IP header, then return the IpHeader and IPsec protected Fragmentable.
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| 193 |
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| 194 | @param[in] IpVersion The version of IP.
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| 195 | @param[in, out] IpHead Point to IP header containing the orginal IP header
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| 196 | to be processed on input, and inserted ESP/AH header
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| 197 | on return.
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| 198 | @param[in, out] LastHead The Last Header in IP header.
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| 199 | @param[in, out] OptionsBuffer Pointer to the options buffer.
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| 200 | @param[in, out] OptionsLength Length of the options buffer.
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| 201 | @param[in, out] FragmentTable Pointer to a list of fragments to be protected by
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| 202 | IPsec on input, and with IPsec protected
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| 203 | on return.
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| 204 | @param[in, out] FragmentCount Number of fragments.
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| 205 | @param[in] SadEntry Related SAD entry.
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| 206 | @param[out] RecycleEvent Event for recycling of resources.
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| 207 |
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| 208 | @retval EFI_SUCCESS The operation is successful.
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| 209 | @retval EFI_UNSUPPORTED If the IPSEC protocol is not supported.
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| 210 |
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| 211 | **/
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| 212 | EFI_STATUS
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| 213 | IpSecProtectOutboundPacket (
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| 214 | IN UINT8 IpVersion,
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| 215 | IN OUT VOID *IpHead,
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| 216 | IN OUT UINT8 *LastHead,
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| 217 | IN OUT VOID **OptionsBuffer,
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| 218 | IN OUT UINT32 *OptionsLength,
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| 219 | IN OUT EFI_IPSEC_FRAGMENT_DATA **FragmentTable,
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| 220 | IN OUT UINT32 *FragmentCount,
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| 221 | IN IPSEC_SAD_ENTRY *SadEntry,
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| 222 | OUT EFI_EVENT *RecycleEvent
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| 223 | );
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| 224 |
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| 225 | /**
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| 226 | Check if the IP Address in the address range of AddressInfos specified.
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| 227 |
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| 228 | @param[in] IpVersion The IP version.
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| 229 | @param[in] IpAddr Points to EFI_IP_ADDRESS to be check.
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| 230 | @param[in] AddressInfo A list of EFI_IP_ADDRESS_INFO that is used to check
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| 231 | the IP Address is matched.
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| 232 | @param[in] AddressCount The total numbers of the AddressInfo.
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| 233 |
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| 234 | @retval TRUE If the Specified IP Address is in the range of the AddressInfos specified.
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| 235 | @retval FALSE If the Specified IP Address is not in the range of the AddressInfos specified.
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| 236 |
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| 237 | **/
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| 238 | BOOLEAN
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| 239 | IpSecMatchIpAddress (
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| 240 | IN UINT8 IpVersion,
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| 241 | IN EFI_IP_ADDRESS *IpAddr,
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| 242 | IN EFI_IP_ADDRESS_INFO *AddressInfo,
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| 243 | IN UINT32 AddressCount
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| 244 | );
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| 245 |
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| 246 | /**
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| 247 | Find a PAD entry according to remote IP address.
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| 248 |
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| 249 | @param[in] IpVersion The version of IP.
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| 250 | @param[in] IpAddr Point to remote IP address.
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| 251 |
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| 252 | @return The pointer of related PAD entry.
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| 253 |
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| 254 | **/
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| 255 | IPSEC_PAD_ENTRY *
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| 256 | IpSecLookupPadEntry (
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| 257 | IN UINT8 IpVersion,
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| 258 | IN EFI_IP_ADDRESS *IpAddr
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| 259 | );
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| 260 |
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| 261 | /**
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| 262 | Check if the specified IP packet can be serviced by this SPD entry.
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| 263 |
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| 264 | @param[in] SpdEntry Point to SPD entry.
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| 265 | @param[in] IpVersion Version of IP.
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| 266 | @param[in] IpHead Point to IP header.
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| 267 | @param[in] IpPayload Point to IP payload.
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| 268 | @param[in] Protocol The Last protocol of IP packet.
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| 269 | @param[in] IsOutbound Traffic direction.
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| 270 | @param[out] Action The support action of SPD entry.
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| 271 |
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| 272 | @retval EFI_SUCCESS Find the related SPD.
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| 273 | @retval EFI_NOT_FOUND Not find the related SPD entry;
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| 274 |
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| 275 | **/
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| 276 | EFI_STATUS
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| 277 | IpSecLookupSpdEntry (
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| 278 | IN IPSEC_SPD_ENTRY *SpdEntry,
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| 279 | IN UINT8 IpVersion,
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| 280 | IN VOID *IpHead,
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| 281 | IN UINT8 *IpPayload,
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| 282 | IN UINT8 Protocol,
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| 283 | IN BOOLEAN IsOutbound,
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| 284 | OUT EFI_IPSEC_ACTION *Action
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| 285 | );
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| 286 |
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| 287 | /**
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| 288 | Look up if there is existing SAD entry for specified IP packet sending.
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| 289 |
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| 290 | This function is called by the IPsecProcess when there is some IP packet needed to
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| 291 | send out. This function checks if there is an existing SAD entry that can be serviced
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| 292 | to this IP packet sending. If no existing SAD entry could be used, this
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| 293 | function will invoke an IPsec Key Exchange Negotiation.
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| 294 |
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| 295 | @param[in] Private Points to private data.
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| 296 | @param[in] NicHandle Points to a NIC handle.
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| 297 | @param[in] IpVersion The version of IP.
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| 298 | @param[in] IpHead The IP Header of packet to be sent out.
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| 299 | @param[in] IpPayload The IP Payload to be sent out.
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| 300 | @param[in] OldLastHead The Last protocol of the IP packet.
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| 301 | @param[in] SpdEntry Points to a related SPD entry.
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| 302 | @param[out] SadEntry Contains the Point of a related SAD entry.
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| 303 |
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| 304 | @retval EFI_DEVICE_ERROR One of following conditions is TRUE:
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| 305 | - If don't find related UDP service.
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| 306 | - Sequence Number is used up.
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| 307 | - Extension Sequence Number is used up.
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| 308 | @retval EFI_NOT_READY No existing SAD entry could be used.
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| 309 | @retval EFI_SUCCESS Find the related SAD entry.
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| 310 |
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| 311 | **/
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| 312 | EFI_STATUS
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| 313 | IpSecLookupSadEntry (
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| 314 | IN IPSEC_PRIVATE_DATA *Private,
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| 315 | IN EFI_HANDLE NicHandle,
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| 316 | IN UINT8 IpVersion,
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| 317 | IN VOID *IpHead,
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| 318 | IN UINT8 *IpPayload,
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| 319 | IN UINT8 OldLastHead,
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| 320 | IN IPSEC_SPD_ENTRY *SpdEntry,
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| 321 | OUT IPSEC_SAD_ENTRY **SadEntry
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| 322 | );
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| 323 |
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| 324 | /**
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| 325 | Find the SAD through whole SAD list.
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| 326 |
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| 327 | @param[in] Spi The SPI used to search the SAD entry.
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| 328 | @param[in] DestAddress The destination used to search the SAD entry.
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| 329 | @param[in] IpVersion The IP version. Ip4 or Ip6.
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| 330 |
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| 331 | @return The pointer to a certain SAD entry.
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| 332 |
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| 333 | **/
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| 334 | IPSEC_SAD_ENTRY *
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| 335 | IpSecLookupSadBySpi (
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| 336 | IN UINT32 Spi,
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| 337 | IN EFI_IP_ADDRESS *DestAddress,
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| 338 | IN UINT8 IpVersion
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| 339 | )
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| 340 | ;
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| 341 |
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| 342 | /**
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| 343 | Handles IPsec packet processing for inbound and outbound IP packets.
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| 344 |
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| 345 | The EFI_IPSEC_PROCESS process routine handles each inbound or outbound packet.
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| 346 | The behavior is that it can perform one of the following actions:
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| 347 | bypass the packet, discard the packet, or protect the packet.
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| 348 |
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| 349 | @param[in] This Pointer to the EFI_IPSEC2_PROTOCOL instance.
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| 350 | @param[in] NicHandle Instance of the network interface.
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| 351 | @param[in] IpVersion IPV4 or IPV6.
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| 352 | @param[in, out] IpHead Pointer to the IP Header.
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| 353 | @param[in, out] LastHead The protocol of the next layer to be processed by IPsec.
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| 354 | @param[in, out] OptionsBuffer Pointer to the options buffer.
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| 355 | @param[in, out] OptionsLength Length of the options buffer.
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| 356 | @param[in, out] FragmentTable Pointer to a list of fragments.
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| 357 | @param[in, out] FragmentCount Number of fragments.
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| 358 | @param[in] TrafficDirection Traffic direction.
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| 359 | @param[out] RecycleSignal Event for recycling of resources.
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| 360 |
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| 361 | @retval EFI_SUCCESS The packet was bypassed and all buffers remain the same.
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| 362 | @retval EFI_SUCCESS The packet was protected.
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| 363 | @retval EFI_ACCESS_DENIED The packet was discarded.
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| 364 |
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| 365 | **/
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| 366 | EFI_STATUS
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| 367 | EFIAPI
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| 368 | IpSecProcess (
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| 369 | IN EFI_IPSEC2_PROTOCOL *This,
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| 370 | IN EFI_HANDLE NicHandle,
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| 371 | IN UINT8 IpVersion,
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| 372 | IN OUT VOID *IpHead,
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| 373 | IN OUT UINT8 *LastHead,
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| 374 | IN OUT VOID **OptionsBuffer,
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| 375 | IN OUT UINT32 *OptionsLength,
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| 376 | IN OUT EFI_IPSEC_FRAGMENT_DATA **FragmentTable,
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| 377 | IN OUT UINT32 *FragmentCount,
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| 378 | IN EFI_IPSEC_TRAFFIC_DIR TrafficDirection,
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| 379 | OUT EFI_EVENT *RecycleSignal
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| 380 | );
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| 381 |
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| 382 | extern EFI_DPC_PROTOCOL *mDpc;
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| 383 | extern EFI_IPSEC2_PROTOCOL mIpSecInstance;
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| 384 |
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| 385 | extern EFI_COMPONENT_NAME2_PROTOCOL gIpSecComponentName2;
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| 386 | extern EFI_COMPONENT_NAME_PROTOCOL gIpSecComponentName;
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| 387 |
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| 388 |
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| 389 | #endif
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