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NetworkPkg:Fix NULL pointer dereference issues.

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Revise some errors that some Null pointers may be dereferenced.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Zhang Lubo <lubo.zhang@intel.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>
Reviewed-by: Ye Ting <ting.ye@intel.com>
Reviewed-by: Wu Jiaxin <jiaxin.wu@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18961 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Zhang Lubo
2015-11-26 08:17:46 +00:00
committed by luobozhang
parent 8e496a7abc
commit 1b96428d92
3 changed files with 41 additions and 32 deletions
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54
NetworkPkg/HttpDxe/HttpProto.c
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@@ -565,15 +565,14 @@ HttpCloseTcpRxEvent (
EFI_TCP4_IO_TOKEN *Rx4Token;
EFI_TCP6_IO_TOKEN *Rx6Token;
ASSERT (Wrap != NULL);
HttpInstance = Wrap->HttpInstance;
Rx4Token = NULL;
Rx6Token = NULL;
if (HttpInstance->LocalAddressIsIPv6) {
if (Wrap != NULL) {
if (Wrap->TcpWrap.Rx6Token.CompletionToken.Event != NULL) {
gBS->CloseEvent (Wrap->TcpWrap.Rx6Token.CompletionToken.Event);
}
if (Wrap->TcpWrap.Rx6Token.CompletionToken.Event != NULL) {
gBS->CloseEvent (Wrap->TcpWrap.Rx6Token.CompletionToken.Event);
}
if (HttpInstance->Rx6Token.CompletionToken.Event != NULL) {
@@ -581,10 +580,8 @@ HttpCloseTcpRxEvent (
HttpInstance->Rx6Token.CompletionToken.Event = NULL;
}
} else {
if (Wrap != NULL) {
if (Wrap->TcpWrap.Rx4Token.CompletionToken.Event != NULL) {
gBS->CloseEvent (Wrap->TcpWrap.Rx4Token.CompletionToken.Event);
}
if (Wrap->TcpWrap.Rx4Token.CompletionToken.Event != NULL) {
gBS->CloseEvent (Wrap->TcpWrap.Rx4Token.CompletionToken.Event);
}
if (HttpInstance->Rx4Token.CompletionToken.Event != NULL) {
@@ -1891,24 +1888,23 @@ HttpTcpTokenCleanup (
EFI_TCP4_IO_TOKEN *Rx4Token;
EFI_TCP6_IO_TOKEN *Rx6Token;
ASSERT (Wrap != NULL);
HttpInstance = Wrap->HttpInstance;
Rx4Token = NULL;
Rx6Token = NULL;
if (HttpInstance->LocalAddressIsIPv6) {
if (Wrap != NULL) {
if (Wrap->TcpWrap.Rx6Token.CompletionToken.Event != NULL) {
gBS->CloseEvent (Wrap->TcpWrap.Rx6Token.CompletionToken.Event);
}
Rx6Token = &Wrap->TcpWrap.Rx6Token;
if (Rx6Token->Packet.RxData->FragmentTable[0].FragmentBuffer != NULL) {
FreePool (Rx6Token->Packet.RxData->FragmentTable[0].FragmentBuffer);
Rx6Token->Packet.RxData->FragmentTable[0].FragmentBuffer = NULL;
}
FreePool (Wrap);
if (Wrap->TcpWrap.Rx6Token.CompletionToken.Event != NULL) {
gBS->CloseEvent (Wrap->TcpWrap.Rx6Token.CompletionToken.Event);
}
Rx6Token = &Wrap->TcpWrap.Rx6Token;
if (Rx6Token->Packet.RxData->FragmentTable[0].FragmentBuffer != NULL) {
FreePool (Rx6Token->Packet.RxData->FragmentTable[0].FragmentBuffer);
Rx6Token->Packet.RxData->FragmentTable[0].FragmentBuffer = NULL;
}
FreePool (Wrap);
if (HttpInstance->Rx6Token.CompletionToken.Event != NULL) {
gBS->CloseEvent (HttpInstance->Rx6Token.CompletionToken.Event);
HttpInstance->Rx6Token.CompletionToken.Event = NULL;
@@ -1921,18 +1917,16 @@ HttpTcpTokenCleanup (
}
} else {
if (Wrap != NULL) {
if (Wrap->TcpWrap.Rx4Token.CompletionToken.Event != NULL) {
gBS->CloseEvent (Wrap->TcpWrap.Rx4Token.CompletionToken.Event);
}
Rx4Token = &Wrap->TcpWrap.Rx4Token;
if (Rx4Token->Packet.RxData->FragmentTable[0].FragmentBuffer != NULL) {
FreePool (Rx4Token->Packet.RxData->FragmentTable[0].FragmentBuffer);
Rx4Token->Packet.RxData->FragmentTable[0].FragmentBuffer = NULL;
}
FreePool (Wrap);
if (Wrap->TcpWrap.Rx4Token.CompletionToken.Event != NULL) {
gBS->CloseEvent (Wrap->TcpWrap.Rx4Token.CompletionToken.Event);
}
Rx4Token = &Wrap->TcpWrap.Rx4Token;
if (Rx4Token->Packet.RxData->FragmentTable[0].FragmentBuffer != NULL) {
FreePool (Rx4Token->Packet.RxData->FragmentTable[0].FragmentBuffer);
Rx4Token->Packet.RxData->FragmentTable[0].FragmentBuffer = NULL;
}
FreePool (Wrap);
if (HttpInstance->Rx4Token.CompletionToken.Event != NULL) {
gBS->CloseEvent (HttpInstance->Rx4Token.CompletionToken.Event);
HttpInstance->Rx4Token.CompletionToken.Event = NULL;