|
1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
2 // All rights reserved. |
|
3 // This component and the accompanying materials are made available |
|
4 // under the terms of "Eclipse Public License v1.0" |
|
5 // which accompanies this distribution, and is available |
|
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
7 // |
|
8 // Initial Contributors: |
|
9 // Nokia Corporation - initial contribution. |
|
10 // |
|
11 // Contributors: |
|
12 // |
|
13 // Description: |
|
14 // Implements the DHCPv4 Message format |
|
15 // |
|
16 // |
|
17 |
|
18 /** |
|
19 @file DHCPIP4Msg.cpp |
|
20 @internalTechnology |
|
21 */ |
|
22 |
|
23 #include "DHCPIP4Msg.h" |
|
24 #include "DHCP_Std.h" |
|
25 |
|
26 using namespace DHCPv4; |
|
27 |
|
28 COptionNode::~COptionNode() |
|
29 { |
|
30 delete iNext; |
|
31 } |
|
32 |
|
33 struct SOptionHeader |
|
34 { |
|
35 TInt iCode; |
|
36 TInt iExpLength; // length of the payload of the option in case the payload has a fixed length |
|
37 TInt iAlignment; // alignment of the payload |
|
38 TInt iMinLength; // length of the whole option (including code & length i present) |
|
39 #ifdef __FLOG_ACTIVE |
|
40 const TText8* iName; |
|
41 #endif |
|
42 }; |
|
43 |
|
44 #ifdef SYMBIAN_NETWORKING_DHCPSERVER |
|
45 #ifdef SYMBIAN_NETWORKING_DHCP_MSG_HEADERS |
|
46 const TInt KNumberOfSupportedOptions = 20; |
|
47 #else |
|
48 const TInt KNumberOfSupportedOptions = 17; |
|
49 #endif |
|
50 #else |
|
51 #ifdef SYMBIAN_NETWORKING_DHCP_MSG_HEADERS |
|
52 const TInt KNumberOfSupportedOptions = 19; |
|
53 #else |
|
54 const TInt KNumberOfSupportedOptions = 16; |
|
55 #endif |
|
56 #endif |
|
57 #ifdef __FLOG_ACTIVE |
|
58 const SOptionHeader KOptions[KNumberOfSupportedOptions]= |
|
59 { //iCode, iExpLength, iAlignment, iMinLength iName |
|
60 {EDHCPSubnetMask, 4, 1, 6, _S8( "EDHCPSubnetMask" )}, //must be the first option |
|
61 {EDHCPRouter, 0, 4, 6, _S8( "EDHCPRouter" )}, |
|
62 #ifdef SYMBIAN_NETWORKING_DHCPSERVER |
|
63 {EDHCPNameServer, 0, 4, 6, _S8( "EDHCPNameServer" )}, |
|
64 #endif // #ifdef SYMBIAN_NETWORKING_DHCPSERVER |
|
65 {EDHCPDomainNameServer, 0, 4, 6, _S8( "EDHCPDomainNameServer" )}, |
|
66 {EDHCPHostName, 0, 1, 3, _S8( "EDHCPHostName" )}, |
|
67 {EDHCPDomainName, 0, 1, 3, _S8( "EDHCPDomainName" )}, |
|
68 {EDHCPBroadcastAddr, 4, 4, 6, _S8( "EDHCPBroadcastAddr" )}, |
|
69 {EDHCPRequestedIPAddr, 4, 4, 6, _S8( "EDHCPRequestedIPAddr" )}, |
|
70 {EDHCPLeaseTime, 4, 4, 6, _S8( "EDHCPLeaseTime" )}, |
|
71 {EDHCPMessageType, 1, 1, 3, _S8( "EDHCPMessageType" )}, |
|
72 {EDHCPServerID, 4, 4, 6, _S8( "EDHCPServerID" )}, |
|
73 {EDHCPParameterReqList, 0, 1, 3, _S8( "EDHCPParameterReqList" )}, |
|
74 {EDHCPMaxMsgSize, 2, 2, 4, _S8( "EDHCPMaxMsgSize" )}, |
|
75 {EDHCPRenewalT1, 4, 4, 6, _S8( "EDHCPRenewalT1" )}, |
|
76 {EDHCPRebindT2, 4, 4, 6, _S8( "EDHCPRebindT2" )}, |
|
77 // {EDHCPAuthentication, 0, 1, 12, _S8( "EDHCPAuthentication" )}, not yet |
|
78 {EDHCPSIPServers, 0, 1, 3, _S8( "EDHCPSIPServers" )}, |
|
79 #ifdef SYMBIAN_NETWORKING_DHCP_MSG_HEADERS |
|
80 {EDHCPTftpServerName, 0, 1, 3, _S8( "EDHCPTftpServerName")}, |
|
81 {EDHCPOptionOverload, 0, 1, 3, _S8( "EDHCPOptionOverload")}, |
|
82 {EDHCPTftpServers, 0, 1, 3, _S8( "EDHCPTftpServers" )}, |
|
83 #endif // SYMBIAN_NETWORKING_DHCP_MSG_HEADERS |
|
84 {EDHCPClientID, 0, 1, 4, _S8( "EDHCPClientID" )} |
|
85 }; |
|
86 |
|
87 void COptionNode::Dump(const TDesC& aTag, const TDesC& aFile) |
|
88 { |
|
89 RFileLogger f; |
|
90 if (f.Connect() == KErrNone) |
|
91 { |
|
92 f.CreateLog(aTag, aFile, EFileLoggingModeAppend); |
|
93 TInt i = 0; |
|
94 while (KOptions[i].iCode != OpCode() && ++i < KNumberOfSupportedOptions){/*do nothing*/} |
|
95 |
|
96 TInt n = iPtr8[1]; |
|
97 if (i < KNumberOfSupportedOptions) |
|
98 { |
|
99 f.WriteFormat(_L8("Option Code: %s, length: %d"), KOptions[i].iName, n); |
|
100 } |
|
101 else |
|
102 { |
|
103 f.WriteFormat(_L( "Option Code: %d, length %d" ), OpCode(), n ); |
|
104 } |
|
105 if (GetItemLength() > 2) |
|
106 { |
|
107 f.HexDump(NULL, NULL, GetBodyPtr(), GetLength()); |
|
108 } |
|
109 f.CloseLog(); |
|
110 f.Close(); |
|
111 } |
|
112 } |
|
113 #else |
|
114 const SOptionHeader KOptions[KNumberOfSupportedOptions]= |
|
115 { //iCode, iExpLength, iAlignment, iMinLength |
|
116 {EDHCPSubnetMask, 4, 1, 6}, //must be the first option |
|
117 {EDHCPRouter, 0, 4, 6}, |
|
118 #ifdef SYMBIAN_NETWORKING_DHCPSERVER |
|
119 {EDHCPNameServer, 0, 4, 6}, |
|
120 #endif // SYMBIAN_NETWORKING_DHCPSERVER |
|
121 {EDHCPDomainNameServer, 0, 4, 6}, |
|
122 {EDHCPHostName, 0, 1, 3}, |
|
123 {EDHCPDomainName, 0, 1, 3}, |
|
124 {EDHCPBroadcastAddr, 4, 4, 6}, |
|
125 {EDHCPRequestedIPAddr, 4, 4, 6}, |
|
126 {EDHCPLeaseTime, 4, 4, 6}, |
|
127 {EDHCPMessageType, 1, 1, 3}, |
|
128 {EDHCPServerID, 4, 4, 6}, |
|
129 {EDHCPParameterReqList, 0, 1, 3}, |
|
130 {EDHCPMaxMsgSize, 2, 2, 4}, |
|
131 {EDHCPRenewalT1, 4, 4, 6}, |
|
132 {EDHCPRebindT2, 4, 4, 6}, |
|
133 {EDHCPClientID, 0, 1, 4}, |
|
134 #ifdef SYMBIAN_NETWORKING_DHCP_MSG_HEADERS |
|
135 {EDHCPTftpServerName, 0, 1, 3}, |
|
136 {EDHCPOptionOverload, 0, 1, 3}, |
|
137 {EDHCPTftpServers, 0, 1, 3}, |
|
138 #endif // SYMBIAN_NETWORKING_DHCP_MSG_HEADERS |
|
139 {EDHCPSIPServers, 0, 1, 3} |
|
140 }; |
|
141 #endif |
|
142 |
|
143 void COptionList::ParseL(TPtr8& aDes8) |
|
144 /** |
|
145 * Parse message to set pointers into descriptor buffer |
|
146 * at locations of each option supplied in a response msg |
|
147 * |
|
148 * @internalTechnology |
|
149 */ |
|
150 { |
|
151 __CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("COptionList::ParseL"))); |
|
152 ASSERT(!iRecord.iFirst); |
|
153 |
|
154 COptionNode** ppNode = reinterpret_cast<COptionNode**>(&iRecord.iFirst); |
|
155 TUint8 nCode = *aDes8.Ptr(); |
|
156 COptionNode* pNode; |
|
157 TInt i, nItemLen, nHeaderLength; |
|
158 while (nCode != EDHCPEnd && aDes8.Length() > 0) |
|
159 { |
|
160 for (i = 0; KOptions[i].iCode != nCode && ++i < KNumberOfSupportedOptions;) {} |
|
161 nHeaderLength = (nCode == EDHCPPad) ? KEDHCPPadLength : KOptionHeaderLength; |
|
162 pNode = new(ELeave) COptionNode(nHeaderLength); |
|
163 |
|
164 /* ppNode is a pointer to a pointer. It has not got assigned any dynamically allocated memory. But coverity has misinterpreted it an issue.*/ |
|
165 // coverity [SYMBIAN.CLEANUP STACK] |
|
166 // coverity [leave_without_push] |
|
167 CleanupStack::PushL(pNode); |
|
168 |
|
169 /* pNode can not be Null here as the memmory assignment is done using new(ELeave). Thus, there is no need of checking for Null, explicitly .*/ |
|
170 // coverity[deref_ptr_in_call] |
|
171 pNode->ParseL(aDes8); |
|
172 nItemLen = pNode->GetItemLength(); |
|
173 |
|
174 if (aDes8.Length() > 0) |
|
175 { |
|
176 nCode = *aDes8.Ptr(); |
|
177 } |
|
178 else |
|
179 { |
|
180 __CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("COptionList::ParseL Option list ended without EDHCPEnd flag"))); |
|
181 } |
|
182 |
|
183 if (i < KNumberOfSupportedOptions) |
|
184 { |
|
185 // now do some sanity checks and leave if bad results |
|
186 TInt nPayloadLength = nItemLen - nHeaderLength; |
|
187 *ppNode = pNode; |
|
188 |
|
189 if (nItemLen < KOptions[i].iMinLength) // min length check |
|
190 { |
|
191 __CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("COptionList::ParseL BadDescriptor 2"))); |
|
192 *ppNode = NULL; |
|
193 User::Leave(KErrBadDescriptor); |
|
194 } |
|
195 |
|
196 if (nPayloadLength % KOptions[i].iAlignment != 0) // alignment check |
|
197 { |
|
198 __CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("COptionList::ParseL BadDescriptor 3"))); |
|
199 *ppNode = NULL; |
|
200 User::Leave(KErrBadDescriptor); |
|
201 } |
|
202 |
|
203 if (KOptions[i].iExpLength > 0 && nPayloadLength != KOptions[i].iExpLength) //expected length check |
|
204 { |
|
205 __CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("COptionList::ParseL BadDescriptor 4"))); |
|
206 *ppNode = NULL; |
|
207 User::Leave(KErrBadDescriptor); |
|
208 } |
|
209 |
|
210 ppNode = reinterpret_cast<COptionNode**>(&(pNode->iNext)); |
|
211 CleanupStack::Pop(pNode); |
|
212 } |
|
213 else |
|
214 { |
|
215 #ifdef SYMBIAN_NETWORKING_DHCP_MSG_HEADERS |
|
216 //make sure we parse everything becz we support every option now |
|
217 if (pNode) |
|
218 { |
|
219 *ppNode = pNode; |
|
220 ppNode = reinterpret_cast<COptionNode**>(&(pNode->iNext)); |
|
221 CleanupStack::Pop(pNode); |
|
222 } |
|
223 else |
|
224 { |
|
225 #endif // SYMBIAN_NETWORKING_DHCP_MSG_HEADERS |
|
226 __CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("COptionList::ParseL Code Not Found"))); |
|
227 |
|
228 /* ppNode is a pointer to a pointer. It has not got assigned any dynamically allocated memory. But coverity has misinterpreted it an issue.*/ |
|
229 // coverity [SYMBIAN.CLEANUP STACK] |
|
230 // coverity [memory_leak] |
|
231 CleanupStack::PopAndDestroy(pNode); |
|
232 pNode=NULL; |
|
233 #ifdef SYMBIAN_NETWORKING_DHCP_MSG_HEADERS |
|
234 } |
|
235 #endif // SYMBIAN_NETWORKING_DHCP_MSG_HEADERS |
|
236 } |
|
237 } |
|
238 |
|
239 |
|
240 } |
|
241 |
|
242 COptionNode* COptionList::AddNodeL(TInt aInitialLength, TInt aHeaderLength) |
|
243 /** |
|
244 * Create a new node for an option in the message |
|
245 * |
|
246 * @internalTechnology |
|
247 */ |
|
248 { |
|
249 COptionNode* pNode = new(ELeave) COptionNode(aHeaderLength); |
|
250 AddNode(pNode); |
|
251 pNode->Header().SetInitialValue(aInitialLength); |
|
252 return pNode; |
|
253 } |
|
254 |
|
255 COptionNode* COptionList::FindOption(TUint8 aOpCode) const |
|
256 /** |
|
257 * Find the location of an option in the message and return a pointer to it |
|
258 * |
|
259 * @internalTechnology |
|
260 */ |
|
261 { |
|
262 COptionNode* pNode = static_cast<COptionNode*>(iRecord.iFirst); |
|
263 while (pNode && pNode->OpCode() != aOpCode) |
|
264 { |
|
265 pNode = static_cast<COptionNode*>(pNode->iNext); |
|
266 } |
|
267 return pNode; |
|
268 } |
|
269 |
|
270 TInt COptionList::NumberOfItemsInAddressListOption(TUint8 aOpCode) const |
|
271 /** |
|
272 * Return the number of addresses |
|
273 * from the specified server option. |
|
274 * |
|
275 * @internalTechnology |
|
276 */ |
|
277 { |
|
278 COptionNode* pNode = FindOption(aOpCode); |
|
279 return pNode ? pNode->GetLength()/KIp4AddrByteLength : 0; |
|
280 } |
|
281 |
|
282 TUint32 COptionList::GetAddressFromAddressListOption(TUint8 aOpCode,TInt aPos) const |
|
283 /** |
|
284 * Return the address at position aPos in the specified server option code |
|
285 * in TUint32 format. |
|
286 * |
|
287 * @param aPos Indicates which one of the addresses in the list to return |
|
288 * @return TUint32 The address |
|
289 * |
|
290 * @internalTechnology |
|
291 */ |
|
292 { |
|
293 COptionNode* pNode = FindOption(aOpCode); |
|
294 return pNode ? BigEndian::Get32(pNode->GetBodyPtr() + aPos * KIp4AddrByteLength) : 0; |
|
295 } |
|
296 |
|
297 |
|
298 TUint32 COptionList::GetValueBigEndian(TUint8 aOpCode) const |
|
299 /** |
|
300 * Return a value from the message in big endian format |
|
301 * |
|
302 * @internalTechnology |
|
303 */ |
|
304 { |
|
305 COptionNode* pNode = FindOption(aOpCode); |
|
306 return pNode ? pNode->GetBigEndian() : 0; |
|
307 } |
|
308 |
|
309 TInt COptionList::NumberOfDomainServers() const |
|
310 /** |
|
311 * Return the number of domain name server addresses |
|
312 * from the domain name server option. There are |
|
313 * expected to be more than one. |
|
314 * |
|
315 * @internalTechnology |
|
316 */ |
|
317 { |
|
318 return NumberOfItemsInAddressListOption(EDHCPDomainNameServer); |
|
319 } |
|
320 |
|
321 TUint32 COptionList::GetDomainNameServer(TInt aPos) const |
|
322 /** |
|
323 * Return the domain name server address at position aPos |
|
324 * in TUint32 format. |
|
325 * |
|
326 * @param aPos Indicates which one of the domain name server addresses to return |
|
327 * @return TUint32 The address of the domain name server |
|
328 * |
|
329 * @internalTechnology |
|
330 */ |
|
331 { |
|
332 return GetAddressFromAddressListOption(EDHCPDomainNameServer,aPos); |
|
333 } |
|
334 |
|
335 |
|
336 |
|
337 TBool COptionList::CopyHostNameL(HBufC8*& aBuf8) const |
|
338 /** |
|
339 * Return a copy of the host name given in the message |
|
340 * |
|
341 * @param aBuf8 A descriptor for the host name to be written into |
|
342 * @return TBool If the copy was successful or not |
|
343 * |
|
344 * @internalTechnology |
|
345 */ |
|
346 { |
|
347 COptionNode* pNode = FindOption(EDHCPHostName); |
|
348 if (pNode) |
|
349 { |
|
350 pNode->CopyBodyToL(aBuf8); |
|
351 } |
|
352 return pNode != NULL; |
|
353 } |
|
354 |
|
355 TBool COptionList::CopyDomainNameL(HBufC8*& aBuf8) const |
|
356 /** |
|
357 * Return a copy of the domain name given in the message |
|
358 * |
|
359 * @param aBuf8 A descriptor for the domain name to be written into |
|
360 * @return TBool If the copy was successful or not |
|
361 */ |
|
362 { |
|
363 COptionNode* pNode = FindOption(EDHCPDomainName); |
|
364 if (pNode) |
|
365 { |
|
366 pNode->CopyBodyToL(aBuf8); |
|
367 } |
|
368 return pNode != NULL; |
|
369 } |
|
370 |
|
371 CDHCPMessageHeaderIP4::CDHCPMessageHeaderIP4(HBufC8*& aMsg) : |
|
372 CDHCPMessageHeader(&iXid, 4, aMsg), //| op (1) | htype (1) | hlen (1) | hops (1) | |
|
373 iXid(&iSecs, 4), iSecs(&iFlags, 2), iFlags(&iCiaddr, 2), |
|
374 iCiaddr(&iYiaddr, 4), iYiaddr(&iSiaddr, 4), iSiaddr(&iGiaddr, 4), |
|
375 iGiaddr(&iChaddr, 4), iChaddr(&iSname, 16), iSname(&iFile, 64), |
|
376 iFile(&iCookie, 128), iCookie(&iOptions, 4), |
|
377 iOptions(NULL) |
|
378 { |
|
379 #ifdef _FLOG_ACTIVE |
|
380 iName = _L("op ht hl ho"); |
|
381 iXid.iName = _L("Xid"); |
|
382 iSecs.iName = _L("Secs"); |
|
383 iFlags.iName = _L("Flags"); |
|
384 iCiaddr.iName = _L("Ciaddr"); |
|
385 iYiaddr.iName = _L("Yiaddr"); |
|
386 iSiaddr.iName = _L("Siaddr"); |
|
387 iGiaddr.iName = _L("Giaddr"); |
|
388 iChaddr.iName = _L("Chaddr"); |
|
389 iSname.iName = _L("Sname"); |
|
390 iFile.iName = _L("File"); |
|
391 iCookie.iName = _L("Cookie"); |
|
392 #endif |
|
393 } |
|
394 |
|
395 CDHCPMessageHeaderIP4::~CDHCPMessageHeaderIP4() |
|
396 { |
|
397 Close(); |
|
398 } |
|
399 |
|
400 COptionNode* CDHCPMessageHeaderIP4::AddOptionL(TDHCPOptionCodes aOpCode, TInt aLength) |
|
401 /** |
|
402 * First stage of adding an option to the message. Calls AddNode to create space |
|
403 * for message. |
|
404 * |
|
405 * @param aOpCode The opcode of the options to be added |
|
406 * @param aLength The length of the option data |
|
407 * @return COptionNode* The pointer to the option in the message |
|
408 * |
|
409 @ @internalTechnology |
|
410 */ |
|
411 { |
|
412 COptionNode* pNode = iOptions.AddNodeL(aLength, aLength > 0 ? KOptionHeaderLength : 1); |
|
413 TPtr8 ptr = iMsg->Des(); |
|
414 pNode->InitialiseL(ptr); |
|
415 pNode->SetOpCode(static_cast<TUint8>(aOpCode)); |
|
416 return pNode; |
|
417 } |
|
418 |
|
419 #ifdef SYMBIAN_NETWORKING_DHCPSERVER |
|
420 void CDHCPMessageHeaderIP4::ParseClientMsgL() |
|
421 { |
|
422 __CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("CDHCPMessageHeaderIP4::ParseL"))); |
|
423 |
|
424 TPtr8 ptr = iMsg->Des(); |
|
425 iRecord.ParseL(ptr); |
|
426 // now it is parsed, first check whether this is actually a REPLY message from a DHCP Server... |
|
427 if (GetOpCode() != EDHCPBootRequest) |
|
428 { |
|
429 User::Leave(KErrNotFound); |
|
430 } |
|
431 } |
|
432 |
|
433 void CDHCPMessageHeaderIP4::GetCHAddr(TSockAddr& aSockAddr) |
|
434 /** |
|
435 * Retrieve Your IP Address from message |
|
436 * |
|
437 * @internalTechnology * |
|
438 */ |
|
439 { |
|
440 aSockAddr.SetFamily(KAFUnspec); |
|
441 aSockAddr.SetLength(KHwAddrOffset); |
|
442 aSockAddr.Append(iChaddr.GetBodyDes()); |
|
443 } |
|
444 #ifdef SYMBIAN_NETWORKING_ADDRESS_PROVISION |
|
445 void CDHCPMessageHeaderIP4::GetClientHwAddr(TSockAddr& aSockAddr) |
|
446 { |
|
447 /** |
|
448 * Return the Client Hardware Address. |
|
449 * |
|
450 * @internalTechnology |
|
451 */ |
|
452 aSockAddr.Append(iChaddr.GetBodyDes()); |
|
453 } |
|
454 #endif //SYMBIAN_NETWORKING_ADDRESS_PROVISION |
|
455 #endif // SYMBIAN_NETWORKING_DHCPSERVER |
|
456 |
|
457 #ifdef SYMBIAN_NETWORKING_DHCP_MSG_HEADERS |
|
458 void CDHCPMessageHeaderIP4::FinishL(TDesC8& aClientId, const TDesC8* aOptionsPtr) |
|
459 /** |
|
460 * Put finishing touches to message for sending. Mainly used for sending DHCPINFORM message |
|
461 * Puts the requested parameter list to 'Parameter Request List' |
|
462 * If aFlag is set to TRUE, then all parameters have to requested including default parameters+extra requested parameters |
|
463 * Basically copies in the magic cookie (99.130.83.99) |
|
464 * and the end marker then set the length of the descriptor |
|
465 * as we have been pushing data into the descriptor manually |
|
466 * |
|
467 * @see RFC 2131 for explanation of the magic cookie! |
|
468 * @param aClientId The client ID string to be added to the message |
|
469 * @param aOptionsPtr Contains a list of opcodes to be sent in the parameter list of the DHCPINFORM message |
|
470 * |
|
471 * @internalTechnology |
|
472 */ |
|
473 #else |
|
474 void CDHCPMessageHeaderIP4::FinishL(TDesC8& aClientId) |
|
475 /** |
|
476 * Put finishing touches to message for sending |
|
477 * Basically copies in the magic cookie (99.130.83.99) |
|
478 * and the end marker then set the length of the descriptor |
|
479 * as we have been pushing data into the descriptor manually |
|
480 * |
|
481 * @param aClientId The client ID string to be added to the message |
|
482 * @see RFC 2131 for explanation of the magic cookie! |
|
483 * |
|
484 * @internalTechnology |
|
485 */ |
|
486 #endif //SYMBIAN_NETWORKING_DHCP_MSG_HEADERS |
|
487 { |
|
488 __CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("CDHCPMessageBase::FinishL"))); |
|
489 |
|
490 #ifdef SYMBIAN_NETWORKING_DHCPSERVER |
|
491 if(!iDHCPServerImpl) |
|
492 { |
|
493 #endif // SYMBIAN_NETWORKING_DHCPSERVER |
|
494 |
|
495 TUint8 reqListArray[KDhcpParameterRequestListLen] = {EDHCPHostName, EDHCPDomainNameServer, |
|
496 EDHCPDomainName, EDHCPSubnetMask, EDHCPRouter, EDHCPBroadcastAddr, EDHCPSIPServers}; |
|
497 TPtr8 ptr(reqListArray, KDhcpParameterRequestListLen, KDhcpParameterRequestListLen); |
|
498 |
|
499 // +++++++++++++++++++++++ Client ID +++++++++++++++++++++++++++++++++++++++++/ |
|
500 AddOptionL(EDHCPClientID, aClientId.Length())->GetBodyDes().Copy(aClientId); |
|
501 |
|
502 #ifdef SYMBIAN_NETWORKING_DHCP_MSG_HEADERS |
|
503 RBuf8 appendOpCodeList; |
|
504 appendOpCodeList.CreateL(ptr); |
|
505 if (aOptionsPtr) |
|
506 { |
|
507 TInt optLen=aOptionsPtr->Length(); |
|
508 appendOpCodeList.ReAllocL(KDhcpParameterRequestListLen+optLen); |
|
509 appendOpCodeList.Append(aOptionsPtr->Ptr(),optLen); |
|
510 } |
|
511 AddOptionL(EDHCPParameterReqList, appendOpCodeList.Length())->GetBodyDes().Copy(appendOpCodeList); |
|
512 appendOpCodeList.Close(); |
|
513 #else |
|
514 // +++++++++++++++++++++++ Parameter Request List ++++++++++++++++++++++++++++/ |
|
515 AddOptionL(EDHCPParameterReqList, ptr.Length())->GetBodyDes().Copy(ptr); |
|
516 #endif |
|
517 // +++++++++++++++++++++++ Maximum message size (2 bytes) ++++++++++++++++++++/ |
|
518 AddOptionL(EDHCPMaxMsgSize, 2)->SetBigEndian(KDhcpMaxMsgSizeIP4); |
|
519 |
|
520 #ifdef SYMBIAN_NETWORKING_DHCPSERVER |
|
521 } |
|
522 #endif // SYMBIAN_NETWORKING_DHCPSERVER |
|
523 |
|
524 TInetAddr magic; |
|
525 _LIT(magicCookie, "99.83.130.99"); |
|
526 User::LeaveIfError(magic.Input(magicCookie)); // essential the magic cookie is correct |
|
527 iCookie.SetLittleEndian(magic.Address()); |
|
528 |
|
529 ASSERT(!iOptions.FindOption(EDHCPEnd)); |
|
530 AddOptionL(EDHCPEnd, 0); |
|
531 |
|
532 //add padding if msg shorter than 300 bytes |
|
533 TInt len=iMsg->Length(); |
|
534 TPtr8 des=iMsg->Des(); |
|
535 if (len<300) |
|
536 { |
|
537 des.AppendFill(EDHCPPad, 300-len); |
|
538 } |
|
539 } |
|
540 |
|
541 void CDHCPMessageHeaderIP4::ParseL() |
|
542 /** |
|
543 * When a response is received to a message |
|
544 * this function will unpack the response by creating |
|
545 * option objects which can be easily used to retrieve |
|
546 * the values returned in these options. Providing |
|
547 * this functionality hides the nasty descriptor operations. |
|
548 * |
|
549 * Each option class has a pointer set to the start point |
|
550 * of their data in the response message. |
|
551 * |
|
552 * There is no need to explicitly unpack the mandatory fields |
|
553 * of the DHCP message that has been returned. Accessor functions |
|
554 * simply extract the data sraight out of the decsriptor. |
|
555 * |
|
556 * @internalTechnology |
|
557 */ |
|
558 { |
|
559 __CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("CDHCPMessageHeaderIP4::ParseL"))); |
|
560 |
|
561 TPtr8 ptr = iMsg->Des(); |
|
562 iRecord.ParseL(ptr); |
|
563 // now it is parsed, first check whether this is actually a REPLY message from a DHCP Server... |
|
564 if (GetOpCode() != EDHCPBootReply) |
|
565 { |
|
566 User::Leave(KErrNotFound); |
|
567 } |
|
568 } |
|
569 |
|
570 |
|
571 void CDHCPMessageHeaderIP4::SetHeader(TUint8 aOpCode,TUint8 aType,TUint8 aLength,TUint8 aHops) |
|
572 /** |
|
573 * Sets Op Code in message |
|
574 * |
|
575 * @internalTechnology |
|
576 * |
|
577 */ |
|
578 { |
|
579 __CFLOG_VAR((KLogSubSysDHCP, KLogCode, _L8("CDHCPMessageHeaderIP4::SetHeader"))); |
|
580 |
|
581 TUint8* ptr = &(GetBodyPtr()[0]); |
|
582 *ptr = aOpCode; |
|
583 *++ptr = aType; |
|
584 *++ptr = aLength; |
|
585 *++ptr = aHops; |
|
586 } |
|
587 |
|
588 void CDHCPMessageHeaderIP4::SetCHAddr(TSockAddr& aAddr) |
|
589 /** |
|
590 * Sets If Hardware Address in message |
|
591 * |
|
592 * @internalTechnology |
|
593 * |
|
594 */ |
|
595 { |
|
596 TUint len = aAddr.Length()-KHwAddrOffset; |
|
597 if(len > KIp4ChAddrMaxLength) { len = KIp4ChAddrMaxLength; } |
|
598 iChaddr.GetBodyDes().Copy(aAddr.Mid(KHwAddrOffset, len)); |
|
599 } |
|
600 |
|
601 void CDnsUpdateOption::ToStringL(RBuf8& aBuf8) const |
|
602 /** |
|
603 * Writes DNS update option data to a string suitable for sending out |
|
604 * on to the network |
|
605 * |
|
606 * @internalTechnology |
|
607 * |
|
608 */ |
|
609 { |
|
610 RBuf8 encodedDomainName; |
|
611 encodedDomainName.CleanupClosePushL(); |
|
612 |
|
613 TDomainNameArray domainNames; |
|
614 CleanupClosePushL(domainNames); |
|
615 domainNames.AppendL(iDomainName); |
|
616 |
|
617 CDomainNameCodec* domainNameEncoder = new(ELeave) CDomainNameCodec(); |
|
618 CleanupStack::PushL(domainNameEncoder); |
|
619 |
|
620 |
|
621 domainNameEncoder->EncodeL(domainNames, encodedDomainName); |
|
622 |
|
623 |
|
624 CleanupStack::PopAndDestroy(domainNameEncoder); |
|
625 CleanupStack::PopAndDestroy(&domainNames); // closes the RBuf8 |
|
626 |
|
627 |
|
628 aBuf8.Zero(); |
|
629 |
|
630 aBuf8.ReAllocL( 3 + encodedDomainName.Length() ); |
|
631 |
|
632 aBuf8.Append((TChar)(iFlags.Value())); |
|
633 aBuf8.Append((TChar)iRCode1); |
|
634 aBuf8.Append((TChar)iRCode2); |
|
635 aBuf8.Append(encodedDomainName); |
|
636 |
|
637 CleanupStack::PopAndDestroy(&encodedDomainName); // closes the array |
|
638 } |
|
639 |
|
640 |