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refine the code and add more security check.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9691 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
vanjeff
2010-01-08 02:35:56 +00:00
parent 33338afebd
commit e285199897
18 changed files with 499 additions and 493 deletions
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56
MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Impl.c
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@@ -1,7 +1,7 @@
/** @file
This file implement the EFI_DHCP4_PROTOCOL interface.
Copyright (c) 2006 - 2009, Intel Corporation.<BR>
Copyright (c) 2006 - 2010, Intel Corporation.<BR>
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -17,7 +17,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
/**
Returns the current operating mode and cached data packet for the EFI DHCPv4 Protocol driver.
The GetModeData() function returns the current operating mode and cached data
packet for the EFI DHCPv4 Protocol driver.
@@ -82,7 +82,7 @@ EFIAPI
EfiDhcp4Configure (
IN EFI_DHCP4_PROTOCOL *This,
IN EFI_DHCP4_CONFIG_DATA *Dhcp4CfgData OPTIONAL
);
);
/**
Starts the DHCP configuration process.
@@ -100,7 +100,7 @@ EfiDhcp4Configure (
time when each event occurs in this process, the callback function that was set
by EFI_DHCP4_PROTOCOL.Configure() will be called and the user can take this
opportunity to control the process.
@param[in] This Pointer to the EFI_DHCP4_PROTOCOL instance.
@param[in] CompletionEvent If not NULL, indicates the event that will be signaled when the
EFI DHCPv4 Protocol driver is transferred into the
@@ -133,7 +133,7 @@ EfiDhcp4Start (
/**
Extends the lease time by sending a request packet.
The RenewRebind() function is used to manually extend the lease time when the
EFI DHCPv4 Protocol driver is in the Dhcp4Bound state and the lease time has
not expired yet. This function will send a request packet to the previously
@@ -206,7 +206,7 @@ EfiDhcp4Release (
/**
Stops the current address configuration.
The Stop() function is used to stop the DHCP configuration process. After this
function is called successfully, the EFI DHCPv4 Protocol driver is transferred
into the Dhcp4Stopped state. EFI_DHCP4_PROTOCOL.Configure() needs to be called
@@ -263,10 +263,10 @@ EfiDhcp4Build (
IN EFI_DHCP4_PACKET_OPTION *AppendList[] OPTIONAL,
OUT EFI_DHCP4_PACKET **NewPacket
);
/**
Transmits a DHCP formatted packet and optionally waits for responses.
The TransmitReceive() function is used to transmit a DHCP packet and optionally
wait for the response from servers. This function does not change the state of
the EFI DHCPv4 Protocol driver and thus can be used at any time.
@@ -292,7 +292,7 @@ EfiDhcp4TransmitReceive (
/**
Parses the packed DHCP option data.
The Parse() function is used to retrieve the option list from a DHCP packet.
If *OptionCount isn't zero, and there is enough space for all the DHCP options
in the Packet, each element of PacketOptionList is set to point to somewhere in
@@ -340,7 +340,7 @@ EFI_DHCP4_PROTOCOL mDhcp4ProtocolTemplate = {
/**
Returns the current operating mode and cached data packet for the EFI DHCPv4 Protocol driver.
The GetModeData() function returns the current operating mode and cached data
packet for the EFI DHCPv4 Protocol driver.
@@ -647,15 +647,15 @@ EfiDhcp4Configure (
}
if (Dhcp4CfgData != NULL) {
if (Dhcp4CfgData->DiscoverTryCount && (Dhcp4CfgData->DiscoverTimeout == NULL)) {
if ((Dhcp4CfgData->DiscoverTryCount != 0) && (Dhcp4CfgData->DiscoverTimeout == NULL)) {
return EFI_INVALID_PARAMETER;
}
if (Dhcp4CfgData->RequestTryCount && (Dhcp4CfgData->RequestTimeout == NULL)) {
if ((Dhcp4CfgData->RequestTryCount != 0) && (Dhcp4CfgData->RequestTimeout == NULL)) {
return EFI_INVALID_PARAMETER;
}
if (Dhcp4CfgData->OptionCount && (Dhcp4CfgData->OptionList == NULL)) {
if ((Dhcp4CfgData->OptionCount != 0) && (Dhcp4CfgData->OptionList == NULL)) {
return EFI_INVALID_PARAMETER;
}
@@ -748,7 +748,7 @@ ON_EXIT:
time when each event occurs in this process, the callback function that was set
by EFI_DHCP4_PROTOCOL.Configure() will be called and the user can take this
opportunity to control the process.
@param[in] This Pointer to the EFI_DHCP4_PROTOCOL instance.
@param[in] CompletionEvent If not NULL, indicates the event that will be signaled when the
EFI DHCPv4 Protocol driver is transferred into the
@@ -842,7 +842,7 @@ ON_ERROR:
/**
Extends the lease time by sending a request packet.
The RenewRebind() function is used to manually extend the lease time when the
EFI DHCPv4 Protocol driver is in the Dhcp4Bound state and the lease time has
not expired yet. This function will send a request packet to the previously
@@ -1045,7 +1045,7 @@ ON_EXIT:
/**
Stops the current address configuration.
The Stop() function is used to stop the DHCP configuration process. After this
function is called successfully, the EFI DHCPv4 Protocol driver is transferred
into the Dhcp4Stopped state. EFI_DHCP4_PROTOCOL.Configure() needs to be called
@@ -1165,10 +1165,10 @@ EfiDhcp4Build (
/**
Callback by UdpIoCreatePort() when creating UdpIo for this Dhcp4 instance.
@param[in] UdpIo The UdpIo being created.
@param[in] Context Dhcp4 instance.
@retval EFI_SUCCESS UdpIo is configured successfully.
@retval other Other error occurs.
**/
@@ -1212,9 +1212,9 @@ Dhcp4InstanceConfigUdpIo (
/**
Create UdpIo for this Dhcp4 instance.
@param Instance The Dhcp4 instance.
@retval EFI_SUCCESS UdpIo is created successfully.
@retval EFI_OUT_OF_RESOURCES Fails to create UdpIo because of limited
resources or configuration failure.
@@ -1245,7 +1245,7 @@ Dhcp4InstanceCreateUdpIo (
/**
Callback of Dhcp packet. Does nothing.
@param Arg The context.
**/
@@ -1258,15 +1258,15 @@ DhcpDummyExtFree (
/**
Callback of UdpIoRecvDatagram() that handles a Dhcp4 packet.
Only BOOTP responses will be handled that correspond to the Xid of the request
sent out. The packet will be queued to the response queue.
@param UdpPacket The Dhcp4 packet.
@param EndPoint Udp4 address pair.
@param IoStatus Status of the input.
@param Context Extra info for the input.
**/
VOID
PxeDhcpInput (
@@ -1368,7 +1368,7 @@ RESTART:
/**
Complete a Dhcp4 transaction and signal the upper layer.
@param Instance Dhcp4 instance.
**/
@@ -1417,7 +1417,7 @@ SIGNAL_USER:
/**
Transmits a DHCP formatted packet and optionally waits for responses.
The TransmitReceive() function is used to transmit a DHCP packet and optionally
wait for the response from servers. This function does not change the state of
the EFI DHCPv4 Protocol driver and thus can be used at any time.
@@ -1643,7 +1643,7 @@ Dhcp4ParseCheckOption (
/**
Parses the packed DHCP option data.
The Parse() function is used to retrieve the option list from a DHCP packet.
If *OptionCount isn't zero, and there is enough space for all the DHCP options
in the Packet, each element of PacketOptionList is set to point to somewhere in