X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdeModulePkg%2FLibrary%2FDxeNetLib%2FDxeNetLib.c;h=b8544b89ab8d3f5bee7b5e94c1eb12f615b170c2;hp=e112d45ef21c45414cf9a939183e68d25200f7ab;hb=29788f178e48fa5ffe7d3262d73c9548e9285d2d;hpb=33ecfa8af9e36f80d6faf154f64e3d185dd55f5a
diff --git a/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c b/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
index e112d45ef2..b8544b89ab 100644
--- a/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
+++ b/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
@@ -1,7 +1,7 @@
/** @file
Network library.
-Copyright (c) 2005 - 2015, Intel Corporation. All rights reserved.
+Copyright (c) 2005 - 2017, Intel Corporation. All rights reserved.
(C) Copyright 2015 Hewlett Packard Enterprise Development LP
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
@@ -301,7 +301,7 @@ ON_EXIT:
Build a syslog packet, including the Ethernet/Ip/Udp headers
and user's message.
- @param[in] Level Syslog servity level
+ @param[in] Level Syslog severity level
@param[in] Module The module that generates the log
@param[in] File The file that contains the current log
@param[in] Line The line of code in the File that contains the current log
@@ -475,7 +475,7 @@ NetDebugASPrint (
This function will locate a instance of SNP then send the message through it.
Because it isn't open the SNP BY_DRIVER, apply caution when using it.
- @param Level The servity level of the message.
+ @param Level The severity level of the message.
@param Module The Moudle that generates the log.
@param File The file that contains the log.
@param Line The exact line that contains the log.
@@ -565,7 +565,7 @@ NetGetMaskLength (
{
INTN Index;
- for (Index = 0; Index < IP4_MASK_NUM; Index++) {
+ for (Index = 0; Index <= IP4_MASK_MAX; Index++) {
if (NetMask == gIp4AllMasks[Index]) {
break;
}
@@ -580,6 +580,11 @@ NetGetMaskLength (
Return the class of the IP address, such as class A, B, C.
Addr is in host byte order.
+ [ATTENTION]
+ Classful addressing (IP class A/B/C) has been deprecated according to RFC4632.
+ Caller of this function could only check the returned value against
+ IP4_ADDR_CLASSD (multicast) or IP4_ADDR_CLASSE (reserved) now.
+
The address of class A starts with 0.
If the address belong to class A, return IP4_ADDR_CLASSA.
The address of class B starts with 10.
@@ -628,12 +633,13 @@ NetGetIpClass (
/**
Check whether the IP is a valid unicast address according to
- the netmask. If NetMask is zero, use the IP address's class to get the default mask.
+ the netmask.
- If Ip is 0, IP is not a valid unicast address.
- Class D address is used for multicasting and class E address is reserved for future. If Ip
- belongs to class D or class E, IP is not a valid unicast address.
- If all bits of the host address of IP are 0 or 1, IP is also not a valid unicast address.
+ ASSERT if NetMask is zero.
+
+ If all bits of the host address of IP are 0 or 1, IP is also not a valid unicast address,
+ except when the originator is one of the endpoints of a point-to-point link with a 31-bit
+ mask (RFC3021).
@param[in] Ip The IP to check against.
@param[in] NetMask The mask of the IP.
@@ -648,20 +654,18 @@ NetIp4IsUnicast (
IN IP4_ADDR NetMask
)
{
- INTN Class;
-
- Class = NetGetIpClass (Ip);
-
- if ((Ip == 0) || (Class >= IP4_ADDR_CLASSD)) {
+ ASSERT (NetMask != 0);
+
+ if (Ip == 0 || IP4_IS_LOCAL_BROADCAST (Ip)) {
return FALSE;
}
- if (NetMask == 0) {
- NetMask = gIp4AllMasks[Class << 3];
- }
-
- if (((Ip &~NetMask) == ~NetMask) || ((Ip &~NetMask) == 0)) {
- return FALSE;
+ if (NetGetMaskLength (NetMask) != 31) {
+ if (((Ip &~NetMask) == ~NetMask) || ((Ip &~NetMask) == 0)) {
+ return FALSE;
+ }
+ } else {
+ return TRUE;
}
return TRUE;
@@ -794,7 +798,7 @@ NetIp6IsNetEqual (
UINT8 Bit;
UINT8 Mask;
- ASSERT ((Ip1 != NULL) && (Ip2 != NULL) && (PrefixLength < IP6_PREFIX_NUM));
+ ASSERT ((Ip1 != NULL) && (Ip2 != NULL) && (PrefixLength <= IP6_PREFIX_MAX));
if (PrefixLength == 0) {
return TRUE;
@@ -874,7 +878,7 @@ NetRandomInitSeed (
UINT64 MonotonicCount;
gRT->GetTime (&Time, NULL);
- Seed = (~Time.Hour << 24 | Time.Day << 16 | Time.Minute << 8 | Time.Second);
+ Seed = (Time.Hour << 24 | Time.Day << 16 | Time.Minute << 8 | Time.Second);
Seed ^= Time.Nanosecond;
Seed ^= Time.Year << 7;
@@ -1151,7 +1155,7 @@ NetDestroyLinkList (
@param[in] ChildHandleBuffer An array of child handles to be freed. May be NULL
if NumberOfChildren is 0.
- @retval TURE Found the input Handle in ChildHandleBuffer.
+ @retval TRUE Found the input Handle in ChildHandleBuffer.
@retval FALSE Can't find the input Handle in ChildHandleBuffer.
**/
@@ -1636,7 +1640,7 @@ NetMapRemoveTail (
/**
Iterate through the netmap and call CallBack for each item.
- It will contiue the traverse if CallBack returns EFI_SUCCESS, otherwise, break
+ It will continue the traverse if CallBack returns EFI_SUCCESS, otherwise, break
from the loop. It returns the CallBack's last return value. This function is
delete safe for the current item.
@@ -2227,6 +2231,7 @@ NetLibGetMacString (
UINT16 VlanId;
CHAR16 *String;
UINTN Index;
+ UINTN BufferSize;
ASSERT (MacString != NULL);
@@ -2243,7 +2248,8 @@ NetLibGetMacString (
// If VLAN is configured, it will need extra 5 characters like "\0005".
// Plus one unicode character for the null-terminator.
//
- String = AllocateZeroPool ((2 * HwAddressSize + 5 + 1) * sizeof (CHAR16));
+ BufferSize = (2 * HwAddressSize + 5 + 1) * sizeof (CHAR16);
+ String = AllocateZeroPool (BufferSize);
if (String == NULL) {
return EFI_OUT_OF_RESOURCES;
}
@@ -2254,7 +2260,14 @@ NetLibGetMacString (
//
HwAddress = &MacAddress.Addr[0];
for (Index = 0; Index < HwAddressSize; Index++) {
- String += UnicodeValueToString (String, PREFIX_ZERO | RADIX_HEX, *(HwAddress++), 2);
+ UnicodeValueToStringS (
+ String,
+ BufferSize - ((UINTN)String - (UINTN)*MacString),
+ PREFIX_ZERO | RADIX_HEX,
+ *(HwAddress++),
+ 2
+ );
+ String += StrnLenS (String, (BufferSize - ((UINTN)String - (UINTN)*MacString)) / sizeof (CHAR16));
}
//
@@ -2263,7 +2276,14 @@ NetLibGetMacString (
VlanId = NetLibGetVlanId (ServiceHandle);
if (VlanId != 0) {
*String++ = L'\\';
- String += UnicodeValueToString (String, PREFIX_ZERO | RADIX_HEX, VlanId, 4);
+ UnicodeValueToStringS (
+ String,
+ BufferSize - ((UINTN)String - (UINTN)*MacString),
+ PREFIX_ZERO | RADIX_HEX,
+ VlanId,
+ 4
+ );
+ String += StrnLenS (String, (BufferSize - ((UINTN)String - (UINTN)*MacString)) / sizeof (CHAR16));
}
//
@@ -2711,58 +2731,21 @@ NetLibAsciiStrToIp4 (
OUT EFI_IPv4_ADDRESS *Ip4Address
)
{
- UINT8 Index;
- CHAR8 *Ip4Str;
- CHAR8 *TempStr;
- UINTN NodeVal;
+ RETURN_STATUS Status;
+ CHAR8 *EndPointer;
- if ((String == NULL) || (Ip4Address == NULL)) {
+ Status = AsciiStrToIpv4Address (String, &EndPointer, Ip4Address, NULL);
+ if (RETURN_ERROR (Status) || (*EndPointer != '\0')) {
return EFI_INVALID_PARAMETER;
+ } else {
+ return EFI_SUCCESS;
}
-
- Ip4Str = (CHAR8 *) String;
-
- for (Index = 0; Index < 4; Index++) {
- TempStr = Ip4Str;
-
- while ((*Ip4Str != '\0') && (*Ip4Str != '.')) {
- Ip4Str++;
- }
-
- //
- // The IPv4 address is X.X.X.X
- //
- if (*Ip4Str == '.') {
- if (Index == 3) {
- return EFI_INVALID_PARAMETER;
- }
- } else {
- if (Index != 3) {
- return EFI_INVALID_PARAMETER;
- }
- }
-
- //
- // Convert the string to IPv4 address. AsciiStrDecimalToUintn stops at the
- // first character that is not a valid decimal character, '.' or '\0' here.
- //
- NodeVal = AsciiStrDecimalToUintn (TempStr);
- if (NodeVal > 0xFF) {
- return EFI_INVALID_PARAMETER;
- }
-
- Ip4Address->Addr[Index] = (UINT8) NodeVal;
-
- Ip4Str++;
- }
-
- return EFI_SUCCESS;
}
/**
Convert one Null-terminated ASCII string to EFI_IPv6_ADDRESS. The format of the
- string is defined in RFC 4291 - Text Pepresentation of Addresses.
+ string is defined in RFC 4291 - Text Representation of Addresses.
@param[in] String The pointer to the Ascii string.
@param[out] Ip6Address The pointer to the converted IPv6 address.
@@ -2778,182 +2761,15 @@ NetLibAsciiStrToIp6 (
OUT EFI_IPv6_ADDRESS *Ip6Address
)
{
- UINT8 Index;
- CHAR8 *Ip6Str;
- CHAR8 *TempStr;
- CHAR8 *TempStr2;
- UINT8 NodeCnt;
- UINT8 TailNodeCnt;
- UINT8 AllowedCnt;
- UINTN NodeVal;
- BOOLEAN Short;
- BOOLEAN Update;
- BOOLEAN LeadZero;
- UINT8 LeadZeroCnt;
- UINT8 Cnt;
-
- if ((String == NULL) || (Ip6Address == NULL)) {
- return EFI_INVALID_PARAMETER;
- }
-
- Ip6Str = (CHAR8 *) String;
- AllowedCnt = 6;
- LeadZeroCnt = 0;
-
- //
- // An IPv6 address leading with : looks strange.
- //
- if (*Ip6Str == ':') {
- if (*(Ip6Str + 1) != ':') {
- return EFI_INVALID_PARAMETER;
- } else {
- AllowedCnt = 7;
- }
- }
-
- ZeroMem (Ip6Address, sizeof (EFI_IPv6_ADDRESS));
-
- NodeCnt = 0;
- TailNodeCnt = 0;
- Short = FALSE;
- Update = FALSE;
- LeadZero = FALSE;
-
- for (Index = 0; Index < 15; Index = (UINT8) (Index + 2)) {
- TempStr = Ip6Str;
-
- while ((*Ip6Str != '\0') && (*Ip6Str != ':')) {
- Ip6Str++;
- }
-
- if ((*Ip6Str == '\0') && (Index != 14)) {
- return EFI_INVALID_PARAMETER;
- }
-
- if (*Ip6Str == ':') {
- if (*(Ip6Str + 1) == ':') {
- if ((NodeCnt > 6) ||
- ((*(Ip6Str + 2) != '\0') && (AsciiStrHexToUintn (Ip6Str + 2) == 0))) {
- //
- // ::0 looks strange. report error to user.
- //
- return EFI_INVALID_PARAMETER;
- }
- if ((NodeCnt == 6) && (*(Ip6Str + 2) != '\0') &&
- (AsciiStrHexToUintn (Ip6Str + 2) != 0)) {
- return EFI_INVALID_PARAMETER;
- }
-
- //
- // Skip the abbreviation part of IPv6 address.
- //
- TempStr2 = Ip6Str + 2;
- while ((*TempStr2 != '\0')) {
- if (*TempStr2 == ':') {
- if (*(TempStr2 + 1) == ':') {
- //
- // :: can only appear once in IPv6 address.
- //
- return EFI_INVALID_PARAMETER;
- }
-
- TailNodeCnt++;
- if (TailNodeCnt >= (AllowedCnt - NodeCnt)) {
- //
- // :: indicates one or more groups of 16 bits of zeros.
- //
- return EFI_INVALID_PARAMETER;
- }
- }
-
- TempStr2++;
- }
-
- Short = TRUE;
- Update = TRUE;
-
- Ip6Str = Ip6Str + 2;
- } else {
- if (*(Ip6Str + 1) == '\0') {
- return EFI_INVALID_PARAMETER;
- }
- Ip6Str++;
- NodeCnt++;
- if ((Short && (NodeCnt > 6)) || (!Short && (NodeCnt > 7))) {
- //
- // There are more than 8 groups of 16 bits of zeros.
- //
- return EFI_INVALID_PARAMETER;
- }
- }
- }
-
- //
- // Convert the string to IPv6 address. AsciiStrHexToUintn stops at the first
- // character that is not a valid hexadecimal character, ':' or '\0' here.
- //
- NodeVal = AsciiStrHexToUintn (TempStr);
- if ((NodeVal > 0xFFFF) || (Index > 14)) {
- return EFI_INVALID_PARAMETER;
- }
- if (NodeVal != 0) {
- if ((*TempStr == '0') &&
- ((*(TempStr + 2) == ':') || (*(TempStr + 3) == ':') ||
- (*(TempStr + 2) == '\0') || (*(TempStr + 3) == '\0'))) {
- return EFI_INVALID_PARAMETER;
- }
- if ((*TempStr == '0') && (*(TempStr + 4) != '\0') &&
- (*(TempStr + 4) != ':')) {
- return EFI_INVALID_PARAMETER;
- }
- } else {
- if (((*TempStr == '0') && (*(TempStr + 1) == '0') &&
- ((*(TempStr + 2) == ':') || (*(TempStr + 2) == '\0'))) ||
- ((*TempStr == '0') && (*(TempStr + 1) == '0') && (*(TempStr + 2) == '0') &&
- ((*(TempStr + 3) == ':') || (*(TempStr + 3) == '\0')))) {
- return EFI_INVALID_PARAMETER;
- }
- }
-
- Cnt = 0;
- while ((TempStr[Cnt] != ':') && (TempStr[Cnt] != '\0')) {
- Cnt++;
- }
- if (LeadZeroCnt == 0) {
- if ((Cnt == 4) && (*TempStr == '0')) {
- LeadZero = TRUE;
- LeadZeroCnt++;
- }
- if ((Cnt != 0) && (Cnt < 4)) {
- LeadZero = FALSE;
- LeadZeroCnt++;
- }
- } else {
- if ((Cnt == 4) && (*TempStr == '0') && !LeadZero) {
- return EFI_INVALID_PARAMETER;
- }
- if ((Cnt != 0) && (Cnt < 4) && LeadZero) {
- return EFI_INVALID_PARAMETER;
- }
- }
-
- Ip6Address->Addr[Index] = (UINT8) (NodeVal >> 8);
- Ip6Address->Addr[Index + 1] = (UINT8) (NodeVal & 0xFF);
-
- //
- // Skip the groups of zeros by ::
- //
- if (Short && Update) {
- Index = (UINT8) (16 - (TailNodeCnt + 2) * 2);
- Update = FALSE;
- }
- }
+ RETURN_STATUS Status;
+ CHAR8 *EndPointer;
- if ((!Short && Index != 16) || (*Ip6Str != '\0')) {
+ Status = AsciiStrToIpv6Address (String, &EndPointer, Ip6Address, NULL);
+ if (RETURN_ERROR (Status) || (*EndPointer != '\0')) {
return EFI_INVALID_PARAMETER;
+ } else {
+ return EFI_SUCCESS;
}
-
- return EFI_SUCCESS;
}
@@ -2965,7 +2781,6 @@ NetLibAsciiStrToIp6 (
@retval EFI_SUCCESS Convert to IPv4 address successfully.
@retval EFI_INVALID_PARAMETER The string is mal-formated or Ip4Address is NULL.
- @retval EFI_OUT_OF_RESOURCES Fail to perform the operation due to lack of resource.
**/
EFI_STATUS
@@ -2975,38 +2790,27 @@ NetLibStrToIp4 (
OUT EFI_IPv4_ADDRESS *Ip4Address
)
{
- CHAR8 *Ip4Str;
- EFI_STATUS Status;
+ RETURN_STATUS Status;
+ CHAR16 *EndPointer;
- if ((String == NULL) || (Ip4Address == NULL)) {
+ Status = StrToIpv4Address (String, &EndPointer, Ip4Address, NULL);
+ if (RETURN_ERROR (Status) || (*EndPointer != L'\0')) {
return EFI_INVALID_PARAMETER;
+ } else {
+ return EFI_SUCCESS;
}
-
- Ip4Str = (CHAR8 *) AllocatePool ((StrLen (String) + 1) * sizeof (CHAR8));
- if (Ip4Str == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- UnicodeStrToAsciiStr (String, Ip4Str);
-
- Status = NetLibAsciiStrToIp4 (Ip4Str, Ip4Address);
-
- FreePool (Ip4Str);
-
- return Status;
}
/**
Convert one Null-terminated Unicode string to EFI_IPv6_ADDRESS. The format of
- the string is defined in RFC 4291 - Text Pepresentation of Addresses.
+ the string is defined in RFC 4291 - Text Representation of Addresses.
@param[in] String The pointer to the Ascii string.
@param[out] Ip6Address The pointer to the converted IPv6 address.
@retval EFI_SUCCESS Convert to IPv6 address successfully.
@retval EFI_INVALID_PARAMETER The string is mal-formated or Ip6Address is NULL.
- @retval EFI_OUT_OF_RESOURCES Fail to perform the operation due to lack of resource.
**/
EFI_STATUS
@@ -3016,30 +2820,20 @@ NetLibStrToIp6 (
OUT EFI_IPv6_ADDRESS *Ip6Address
)
{
- CHAR8 *Ip6Str;
- EFI_STATUS Status;
+ RETURN_STATUS Status;
+ CHAR16 *EndPointer;
- if ((String == NULL) || (Ip6Address == NULL)) {
+ Status = StrToIpv6Address (String, &EndPointer, Ip6Address, NULL);
+ if (RETURN_ERROR (Status) || (*EndPointer != L'\0')) {
return EFI_INVALID_PARAMETER;
+ } else {
+ return EFI_SUCCESS;
}
-
- Ip6Str = (CHAR8 *) AllocatePool ((StrLen (String) + 1) * sizeof (CHAR8));
- if (Ip6Str == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- UnicodeStrToAsciiStr (String, Ip6Str);
-
- Status = NetLibAsciiStrToIp6 (Ip6Str, Ip6Address);
-
- FreePool (Ip6Str);
-
- return Status;
}
/**
Convert one Null-terminated Unicode string to EFI_IPv6_ADDRESS and prefix length.
- The format of the string is defined in RFC 4291 - Text Pepresentation of Addresses
+ The format of the string is defined in RFC 4291 - Text Representation of Addresses
Prefixes: ipv6-address/prefix-length.
@param[in] String The pointer to the Ascii string.
@@ -3048,7 +2842,6 @@ NetLibStrToIp6 (
@retval EFI_SUCCESS Convert to IPv6 address successfully.
@retval EFI_INVALID_PARAMETER The string is mal-formated or Ip6Address is NULL.
- @retval EFI_OUT_OF_RESOURCES Fail to perform the operation due to lack of resource.
**/
EFI_STATUS
@@ -3059,80 +2852,15 @@ NetLibStrToIp6andPrefix (
OUT UINT8 *PrefixLength
)
{
- CHAR8 *Ip6Str;
- CHAR8 *PrefixStr;
- CHAR8 *TempStr;
- EFI_STATUS Status;
- UINT8 Length;
+ RETURN_STATUS Status;
+ CHAR16 *EndPointer;
- if ((String == NULL) || (Ip6Address == NULL) || (PrefixLength == NULL)) {
+ Status = StrToIpv6Address (String, &EndPointer, Ip6Address, PrefixLength);
+ if (RETURN_ERROR (Status) || (*EndPointer != L'\0')) {
return EFI_INVALID_PARAMETER;
- }
-
- Ip6Str = (CHAR8 *) AllocatePool ((StrLen (String) + 1) * sizeof (CHAR8));
- if (Ip6Str == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- UnicodeStrToAsciiStr (String, Ip6Str);
-
- //
- // Get the sub string describing prefix length.
- //
- TempStr = Ip6Str;
- while (*TempStr != '\0' && (*TempStr != '/')) {
- TempStr++;
- }
-
- if (*TempStr == '/') {
- PrefixStr = TempStr + 1;
} else {
- PrefixStr = NULL;
- }
-
- //
- // Get the sub string describing IPv6 address and convert it.
- //
- *TempStr = '\0';
-
- Status = NetLibAsciiStrToIp6 (Ip6Str, Ip6Address);
- if (EFI_ERROR (Status)) {
- goto Exit;
- }
-
- //
- // If input string doesn't indicate the prefix length, return 0xff.
- //
- Length = 0xFF;
-
- //
- // Convert the string to prefix length
- //
- if (PrefixStr != NULL) {
-
- Status = EFI_INVALID_PARAMETER;
- Length = 0;
- while (*PrefixStr != '\0') {
- if (NET_IS_DIGIT (*PrefixStr)) {
- Length = (UINT8) (Length * 10 + (*PrefixStr - '0'));
- if (Length >= IP6_PREFIX_NUM) {
- goto Exit;
- }
- } else {
- goto Exit;
- }
-
- PrefixStr++;
- }
+ return EFI_SUCCESS;
}
-
- *PrefixLength = Length;
- Status = EFI_SUCCESS;
-
-Exit:
-
- FreePool (Ip6Str);
- return Status;
}
/**
@@ -3273,7 +3001,7 @@ NetLibGetSystemGuid (
return EFI_NOT_FOUND;
}
Smbios.Hdr = (SMBIOS_STRUCTURE *) (UINTN) SmbiosTable->TableAddress;
- SmbiosEnd.Raw = (UINT8 *) (UINTN) (SmbiosTable->TableAddress + SmbiosTable->TableLength);
+ SmbiosEnd.Raw = (UINT8 *) ((UINTN) SmbiosTable->TableAddress + SmbiosTable->TableLength);
}
do {
@@ -3326,3 +3054,70 @@ NetLibGetSystemGuid (
} while (Smbios.Raw < SmbiosEnd.Raw);
return EFI_NOT_FOUND;
}
+
+/**
+ Create Dns QName according the queried domain name.
+ QName is a domain name represented as a sequence of labels,
+ where each label consists of a length octet followed by that
+ number of octets. The QName terminates with the zero
+ length octet for the null label of the root. Caller should
+ take responsibility to free the buffer in returned pointer.
+
+ @param DomainName The pointer to the queried domain name string.
+
+ @retval NULL Failed to fill QName.
+ @return QName filled successfully.
+
+**/
+CHAR8 *
+EFIAPI
+NetLibCreateDnsQName (
+ IN CHAR16 *DomainName
+ )
+{
+ CHAR8 *QueryName;
+ UINTN QueryNameSize;
+ CHAR8 *Header;
+ CHAR8 *Tail;
+ UINTN Len;
+ UINTN Index;
+
+ QueryName = NULL;
+ QueryNameSize = 0;
+ Header = NULL;
+ Tail = NULL;
+
+ //
+ // One byte for first label length, one byte for terminated length zero.
+ //
+ QueryNameSize = StrLen (DomainName) + 2;
+
+ if (QueryNameSize > DNS_MAX_NAME_SIZE) {
+ return NULL;
+ }
+
+ QueryName = AllocateZeroPool (QueryNameSize);
+ if (QueryName == NULL) {
+ return NULL;
+ }
+
+ Header = QueryName;
+ Tail = Header + 1;
+ Len = 0;
+ for (Index = 0; DomainName[Index] != 0; Index++) {
+ *Tail = (CHAR8) DomainName[Index];
+ if (*Tail == '.') {
+ *Header = (CHAR8) Len;
+ Header = Tail;
+ Tail ++;
+ Len = 0;
+ } else {
+ Tail++;
+ Len++;
+ }
+ }
+ *Header = (CHAR8) Len;
+ *Tail = 0;
+
+ return QueryName;
+}