ReactOS 0.4.15-dev-7085-g12a5971
interface.c
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1/*
2 * COPYRIGHT: See COPYING in the top level directory
3 * PROJECT: ReactOS TCP/IP protocol driver
4 * FILE: tcpip/interface.c
5 * PURPOSE: Convenient abstraction for getting and setting information
6 * in IP_INTERFACE.
7 * PROGRAMMERS: Art Yerkes
8 * REVISIONS:
9 * CSH 01/08-2000 Created
10 */
11
12#include "precomp.h"
13
14#include <ntifs.h>
15#include <ipifcons.h>
16
18
20 ULONG TargetType,
21 PULONG Address ) {
22 switch( TargetType ) {
23 case ADE_UNICAST:
24 *Address = Interface->Unicast.Address.IPv4Address;
25 break;
26
27 case ADE_ADDRMASK:
28 *Address = Interface->Netmask.Address.IPv4Address;
29 break;
30
31 case ADE_BROADCAST:
32 *Address = Interface->Broadcast.Address.IPv4Address;
33 break;
34
35 case ADE_POINTOPOINT:
36 *Address = Interface->PointToPoint.Address.IPv4Address;
37 break;
38
39 default:
41 }
42
43 return STATUS_SUCCESS;
44}
45
47 ULONG Count = 0;
49 IF_LIST_ITER(CurrentIF);
50
52
53 ForEachInterface(CurrentIF) {
54 Count++;
55 } EndFor(CurrentIF);
56
58
59 return Count;
60}
61
64
65 *Speed = IF->Speed;
66
67 return STATUS_SUCCESS;
68}
69
71 PCHAR NameBuffer,
72 UINT Len ) {
73 ULONG ResultSize = 0;
75 RtlUnicodeToMultiByteN( NameBuffer,
76 Len,
77 &ResultSize,
78 Interface->Name.Buffer,
79 Interface->Name.Length );
80
81 if( NT_SUCCESS(Status) )
82 NameBuffer[ResultSize] = 0;
83 else
84 NameBuffer[0] = 0;
85
86 return Status;
87}
88
90 PIP_ADDRESS MatchAddress)
91{
93 PIP_INTERFACE RetIF = NULL;
94 IF_LIST_ITER(CurrentIF);
95
97
98 ForEachInterface(CurrentIF) {
99 if( AddrIsEqual( &CurrentIF->Unicast, MatchAddress ) ||
100 AddrIsEqual( &CurrentIF->Broadcast, MatchAddress ) ) {
101 RetIF = CurrentIF;
102 break;
103 }
104 } EndFor(CurrentIF);
105
107
108 return RetIF;
109}
110
114 UINT Length)
115/*
116 * FUNCTION: Determines wether an address has an given prefix
117 * ARGUMENTS:
118 * Address = Pointer to address to use
119 * Prefix = Pointer to prefix to check for
120 * Length = Length of prefix
121 * RETURNS:
122 * TRUE if the address has the prefix, FALSE if not
123 * NOTES:
124 * The two addresses must be of the same type
125 */
126{
127 PUCHAR pAddress = (PUCHAR)&Address->Address;
128 PUCHAR pPrefix = (PUCHAR)&Prefix->Address;
129
130 TI_DbgPrint(DEBUG_ROUTER, ("Called. Address (0x%X) Prefix (0x%X) Length (%d).\n", Address, Prefix, Length));
131
132#if 0
133 TI_DbgPrint(DEBUG_ROUTER, ("Address (%s) Prefix (%s).\n",
134 A2S(Address), A2S(Prefix)));
135#endif
136
137 /* Don't report matches for empty prefixes */
138 if (Length == 0) {
139 return FALSE;
140 }
141
142 /* Check that initial integral bytes match */
143 while (Length > 8) {
144 if (*pAddress++ != *pPrefix++)
145 return FALSE;
146 Length -= 8;
147 }
148
149 /* Check any remaining bits */
150 if ((Length > 0) && ((*pAddress >> (8 - Length)) != (*pPrefix >> (8 - Length))))
151 return FALSE;
152
153 return TRUE;
154}
155
157{
159 ULONG Index = 0;
160 ULONG IfStatus;
161
162 IF_LIST_ITER(CurrentIF);
163
165 /* DHCP hack: Always return the adapter without an IP address */
166 ForEachInterface(CurrentIF) {
167 if (CurrentIF->Context && AddrIsUnspecified(&CurrentIF->Unicast)) {
169
170 GetInterfaceConnectionStatus(CurrentIF, &IfStatus);
171 if (IfStatus == MIB_IF_OPER_STATUS_OPERATIONAL) {
172 return CurrentIF;
173 }
174
176 }
177 } EndFor(CurrentIF);
178
179 /* Try to continue from the next adapter */
180 ForEachInterface(CurrentIF) {
181 if (CurrentIF->Context && (Index++ == NextDefaultAdapter)) {
183
184 GetInterfaceConnectionStatus(CurrentIF, &IfStatus);
185 if (IfStatus == MIB_IF_OPER_STATUS_OPERATIONAL) {
187 return CurrentIF;
188 }
189
191 }
192 } EndFor(CurrentIF);
193
194 /* No luck, so we'll choose the first adapter this time */
195 Index = 0;
196 ForEachInterface(CurrentIF) {
197 if (CurrentIF->Context) {
198 Index++;
200
201 GetInterfaceConnectionStatus(CurrentIF, &IfStatus);
202 if (IfStatus == MIB_IF_OPER_STATUS_OPERATIONAL) {
204 return CurrentIF;
205 }
206
208 }
209 } EndFor(CurrentIF);
210
211 /* Even that didn't work, so we'll just go with loopback */
214
215 /* There are no physical interfaces on the system
216 * so we must pick the loopback interface */
217
218 return Loopback;
219}
220
222/*
223 * FUNCTION: Checks all on-link prefixes to find out if an address is on-link
224 * ARGUMENTS:
225 * Address = Pointer to address to check
226 * RETURNS:
227 * Pointer to interface if address is on-link, NULL if not
228 */
229{
231 IF_LIST_ITER(CurrentIF);
232
233 TI_DbgPrint(DEBUG_ROUTER, ("Called. Address (0x%X)\n", Address));
234 TI_DbgPrint(DEBUG_ROUTER, ("Address (%s)\n", A2S(Address)));
235
237 return GetDefaultInterface();
238
240
241 ForEachInterface(CurrentIF) {
242 if (HasPrefix(Address, &CurrentIF->Unicast,
243 AddrCountPrefixBits(&CurrentIF->Netmask))) {
245 return CurrentIF;
246 }
247 } EndFor(CurrentIF);
248
250
251 return NULL;
252}
253
255{
256 PLAN_ADAPTER Adapter = Interface->Context;
257
258 /* Loopback has no adapter context */
259 if (Adapter == NULL || Adapter->State == LAN_STATE_STARTED) {
261 }
262 else {
264 }
265}
unsigned char BOOLEAN
UINT AddrCountPrefixBits(PIP_ADDRESS Netmask)
Definition: address.c:64
BOOLEAN AddrIsUnspecified(PIP_ADDRESS Address)
Definition: address.c:113
BOOLEAN AddrIsEqual(PIP_ADDRESS Address1, PIP_ADDRESS Address2)
Definition: address.c:221
LONG NTSTATUS
Definition: precomp.h:26
#define Len
Definition: deflate.h:82
#define NULL
Definition: types.h:112
#define TRUE
Definition: types.h:120
#define FALSE
Definition: types.h:117
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
#define DEBUG_ROUTER
Definition: debug.h:30
#define TI_DbgPrint(_t_, _x_)
Definition: debug.h:45
#define ADE_POINTOPOINT
Definition: ip.h:113
KSPIN_LOCK InterfaceListLock
Definition: ip.c:18
#define ADE_BROADCAST
Definition: ip.h:111
#define ADE_UNICAST
Definition: ip.h:110
#define ADE_ADDRMASK
Definition: ip.h:112
VOID TcpipReleaseSpinLock(PKSPIN_LOCK SpinLock, KIRQL Irql)
Definition: lock.c:26
VOID TcpipAcquireSpinLock(PKSPIN_LOCK SpinLock, PKIRQL Irql)
Definition: lock.c:18
PCHAR A2S(PIP_ADDRESS Address)
Definition: address.c:17
PIP_INTERFACE FindOnLinkInterface(PIP_ADDRESS Address)
Definition: interface.c:221
NTSTATUS GetInterfaceName(PIP_INTERFACE Interface, PCHAR NameBuffer, UINT Len)
Definition: interface.c:70
UINT CountInterfaces()
Definition: interface.c:46
NTSTATUS GetInterfaceSpeed(PIP_INTERFACE Interface, PUINT Speed)
Definition: interface.c:62
PIP_INTERFACE AddrLocateInterface(PIP_ADDRESS MatchAddress)
Definition: interface.c:89
VOID GetInterfaceConnectionStatus(PIP_INTERFACE Interface, PULONG Result)
Definition: interface.c:254
PIP_INTERFACE GetDefaultInterface(VOID)
Definition: interface.c:156
ULONG NextDefaultAdapter
Definition: interface.c:17
NTSTATUS GetInterfaceIPv4Address(PIP_INTERFACE Interface, ULONG TargetType, PULONG Address)
Definition: interface.c:19
BOOLEAN HasPrefix(PIP_ADDRESS Address, PIP_ADDRESS Prefix, UINT Length)
Definition: interface.c:111
UCHAR KIRQL
Definition: env_spec_w32.h:591
Status
Definition: gdiplustypes.h:25
#define MIB_IF_OPER_STATUS_DISCONNECTED
Definition: ipifcons.h:248
#define MIB_IF_OPER_STATUS_OPERATIONAL
Definition: ipifcons.h:251
#define LAN_STATE_STARTED
Definition: lan.h:113
struct LAN_ADAPTER * PLAN_ADAPTER
PIP_INTERFACE Loopback
Definition: loopback.c:13
unsigned int * PUINT
Definition: ndis.h:50
unsigned int UINT
Definition: ndis.h:50
_Use_decl_annotations_ NTSTATUS NTAPI RtlUnicodeToMultiByteN(_Out_ PCHAR MbString, _In_ ULONG MbSize, _Out_opt_ PULONG ResultSize, _In_ PCWCH UnicodeString, _In_ ULONG UnicodeSize)
Definition: nlsboot.c:107
int Count
Definition: noreturn.cpp:7
_In_ ULONG _In_ ULONG _In_ ULONG Length
Definition: ntddpcm.h:102
static WCHAR Address[46]
Definition: ping.c:68
#define STATUS_SUCCESS
Definition: shellext.h:65
Definition: ip.h:23
PVOID Context
Definition: lan.h:64
UCHAR State
Definition: lan.h:62
UINT Speed
Definition: lan.h:79
#define ForEachInterface(n)
Definition: tilists.h:9
#define EndFor(n)
Definition: tilists.h:20
#define IF_LIST_ITER(n)
Definition: tilists.h:5
uint32_t * PULONG
Definition: typedefs.h:59
unsigned char * PUCHAR
Definition: typedefs.h:53
uint32_t ULONG
Definition: typedefs.h:59
char * PCHAR
Definition: typedefs.h:51
#define STATUS_UNSUCCESSFUL
Definition: udferr_usr.h:132
_In_ WDFCOLLECTION _In_ ULONG Index
_Must_inspect_result_ _In_ WDFDEVICE _In_ LPCGUID _Out_ PINTERFACE Interface
Definition: wdffdo.h:465
_At_(*)(_In_ PWSK_CLIENT Client, _In_opt_ PUNICODE_STRING NodeName, _In_opt_ PUNICODE_STRING ServiceName, _In_opt_ ULONG NameSpace, _In_opt_ GUID *Provider, _In_opt_ PADDRINFOEXW Hints, _Outptr_ PADDRINFOEXW *Result, _In_opt_ PEPROCESS OwningProcess, _In_opt_ PETHREAD OwningThread, _Inout_ PIRP Irp Result)(Mem)) NTSTATUS(WSKAPI *PFN_WSK_GET_ADDRESS_INFO
Definition: wsk.h:409
_Requires_lock_held_ Interrupt _Releases_lock_ Interrupt _In_ _IRQL_restores_ KIRQL OldIrql
Definition: kefuncs.h:792
_In_ __drv_aliasesMem PSTRING Prefix
Definition: rtlfuncs.h:1630