From: Wang Fan <fan.wang@intel.com>
* Library API should check the input parameters before use, or
ASSERT to tell it has to meet some requirements. But in DxeNetLib,
not all functions follows this rule.
* ASSERT shouldn't be used as error handling, add some handling code
for errors.
* Add some ASSERT commence in function notes.
Cc: Fu Siyuan <siyuan.fu@intel.com>
Cc: Ye Ting <ting.ye@intel.com>
Cc: Jiaxin Wu <jiaxin.wu@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Wang Fan <fan.wang@intel.com>
---
MdeModulePkg/Library/DxeNetLib/DxeNetLib.c | 119 +++++++++++++++++++++++++----
1 file changed, 105 insertions(+), 14 deletions(-)
diff --git a/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c b/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
index 0f00f79..90f17b7 100644
--- a/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
+++ b/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
@@ -1,9 +1,9 @@
/** @file
Network library.
-Copyright (c) 2005 - 2017, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>
(C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>
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
http://opensource.org/licenses/bsd-license.php
@@ -196,10 +196,11 @@ SyslogLocateSnp (
Transmit a syslog packet synchronously through SNP. The Packet
already has the ethernet header prepended. This function should
fill in the source MAC because it will try to locate a SNP each
time it is called to avoid the problem if SNP is unloaded.
This code snip is copied from MNP.
+ If Packet is NULL, then ASSERT().
@param[in] Packet The Syslog packet
@param[in] Length The length of the packet
@retval EFI_DEVICE_ERROR Failed to locate a usable SNP protocol
@@ -217,10 +218,12 @@ SyslogSendPacket (
ETHER_HEAD *Ether;
EFI_STATUS Status;
EFI_EVENT TimeoutEvent;
UINT8 *TxBuf;
+ ASSERT (Packet != NULL);
+
Snp = SyslogLocateSnp ();
if (Snp == NULL) {
return EFI_DEVICE_ERROR;
}
@@ -308,11 +311,11 @@ ON_EXIT:
@param[in] Line The line of code in the File that contains the current log
@param[in] Message The log message
@param[in] BufLen The lenght of the Buf
@param[out] Buf The buffer to put the packet data
- @return The length of the syslog packet built.
+ @return The length of the syslog packet built, 0 represents no packet is built.
**/
UINT32
SyslogBuildPacket (
IN UINT32 Level,
@@ -322,10 +325,11 @@ SyslogBuildPacket (
IN UINT8 *Message,
IN UINT32 BufLen,
OUT CHAR8 *Buf
)
{
+ EFI_STATUS Status;
ETHER_HEAD *Ether;
IP4_HEAD *Ip4;
EFI_UDP_HEADER *Udp4;
EFI_TIME Time;
UINT32 Pri;
@@ -377,12 +381,14 @@ SyslogBuildPacket (
//
// Build the syslog message body with <PRI> Timestamp machine module Message
//
Pri = ((NET_SYSLOG_FACILITY & 31) << 3) | (Level & 7);
- gRT->GetTime (&Time, NULL);
- ASSERT ((Time.Month <= 12) && (Time.Month >= 1));
+ Status = gRT->GetTime (&Time, NULL);
+ if (EFI_ERROR (Status)) {
+ return 0;
+ }
//
// Use %a to format the ASCII strings, %s to format UNICODE strings
//
Len = 0;
@@ -437,10 +443,12 @@ SyslogBuildPacket (
__FILE__,
__LINE__,
NetDebugASPrint ("State transit to %a\n", Name)
)
+ If Format is NULL, then ASSERT().
+
@param Format The ASCII format string.
@param ... The variable length parameter whose format is determined
by the Format string.
@return The buffer containing the formatted message,
@@ -455,10 +463,12 @@ NetDebugASPrint (
)
{
VA_LIST Marker;
CHAR8 *Buf;
+ ASSERT (Format != NULL);
+
Buf = (CHAR8 *) AllocatePool (NET_DEBUG_MSG_LEN);
if (Buf == NULL) {
return NULL;
}
@@ -481,11 +491,12 @@ NetDebugASPrint (
@param File The file that contains the log.
@param Line The exact line that contains the log.
@param Message The user message to log.
@retval EFI_INVALID_PARAMETER Any input parameter is invalid.
- @retval EFI_OUT_OF_RESOURCES Failed to allocate memory for the packet
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory for the packet.
+ @retval EFI_DEVICE_ERROR Device error occurs.
@retval EFI_SUCCESS The log is discard because that it is more verbose
than the mNetDebugLevelMax. Or, it has been sent out.
**/
EFI_STATUS
EFIAPI
@@ -502,11 +513,11 @@ NetDebugOutput (
EFI_STATUS Status;
//
// Check whether the message should be sent out
//
- if (Message == NULL) {
+ if (Message == NULL || File == NULL || Module == NULL) {
return EFI_INVALID_PARAMETER;
}
if (Level > mNetDebugLevelMax) {
Status = EFI_SUCCESS;
@@ -535,13 +546,17 @@ NetDebugOutput (
Line,
Message,
NET_SYSLOG_PACKET_LEN,
Packet
);
+ if (Len == 0) {
+ Status = EFI_DEVICE_ERROR;
+ } else {
+ mSyslogPacketSeq++;
+ Status = SyslogSendPacket (Packet, Len);
+ }
- mSyslogPacketSeq++;
- Status = SyslogSendPacket (Packet, Len);
FreePool (Packet);
ON_EXIT:
FreePool (Message);
return Status;
@@ -673,10 +688,12 @@ NetIp4IsUnicast (
}
/**
Check whether the incoming IPv6 address is a valid unicast address.
+ ASSERT if Ip6 is NULL.
+
If the address is a multicast address has binary 0xFF at the start, it is not
a valid unicast address. If the address is unspecified ::, it is not a valid
unicast address to be assigned to any node. If the address is loopback address
::1, it is also not a valid unicast address to be assigned to any physical
interface.
@@ -693,10 +710,12 @@ NetIp6IsValidUnicast (
)
{
UINT8 Byte;
UINT8 Index;
+ ASSERT (Ip6 != NULL);
+
if (Ip6->Addr[0] == 0xFF) {
return FALSE;
}
for (Index = 0; Index < 15; Index++) {
@@ -715,10 +734,12 @@ NetIp6IsValidUnicast (
}
/**
Check whether the incoming Ipv6 address is the unspecified address or not.
+ ASSERT if Ip6 is NULL.
+
@param[in] Ip6 - Ip6 address, in network order.
@retval TRUE - Yes, unspecified
@retval FALSE - No
@@ -729,10 +750,12 @@ NetIp6IsUnspecifiedAddr (
IN EFI_IPv6_ADDRESS *Ip6
)
{
UINT8 Index;
+ ASSERT (Ip6 != NULL);
+
for (Index = 0; Index < 16; Index++) {
if (Ip6->Addr[Index] != 0) {
return FALSE;
}
}
@@ -741,10 +764,12 @@ NetIp6IsUnspecifiedAddr (
}
/**
Check whether the incoming Ipv6 address is a link-local address.
+ ASSERT if Ip6 is NULL.
+
@param[in] Ip6 - Ip6 address, in network order.
@retval TRUE - Yes, link-local address
@retval FALSE - No
@@ -777,10 +802,13 @@ NetIp6IsLinkLocalAddr (
}
/**
Check whether the Ipv6 address1 and address2 are on the connected network.
+ ASSERT if Ip1 or Ip2 is NULL.
+ ASSERT if PrefixLength exceeds IP6_PREFIX_MAX.
+
@param[in] Ip1 - Ip6 address1, in network order.
@param[in] Ip2 - Ip6 address2, in network order.
@param[in] PrefixLength - The prefix length of the checking net.
@retval TRUE - Yes, connected.
@@ -813,11 +841,10 @@ NetIp6IsNetEqual (
}
if (Bit > 0) {
Mask = (UINT8) (0xFF << (8 - Bit));
- ASSERT (Byte < 16);
if ((Ip1->Addr[Byte] & Mask) != (Ip2->Addr[Byte] & Mask)) {
return FALSE;
}
}
@@ -826,10 +853,12 @@ NetIp6IsNetEqual (
/**
Switches the endianess of an IPv6 address
+ ASSERT if Ip6 is NULL.
+
This function swaps the bytes in a 128-bit IPv6 address to switch the value
from little endian to big endian or vice versa. The byte swapped value is
returned.
@param Ip6 Points to an IPv6 address
@@ -844,10 +873,12 @@ Ip6Swap128 (
)
{
UINT64 High;
UINT64 Low;
+ ASSERT (Ip6 != NULL);
+
CopyMem (&High, Ip6, sizeof (UINT64));
CopyMem (&Low, &Ip6->Addr[8], sizeof (UINT64));
High = SwapBytes64 (High);
Low = SwapBytes64 (Low);
@@ -891,10 +922,12 @@ NetRandomInitSeed (
/**
Extract a UINT32 from a byte stream.
+ ASSERT if Buf is NULL.
+
Copy a UINT32 from a byte stream, then converts it from Network
byte order to host byte order. Use this function to avoid alignment error.
@param[in] Buf The buffer to extract the UINT32.
@@ -907,18 +940,22 @@ NetGetUint32 (
IN UINT8 *Buf
)
{
UINT32 Value;
+ ASSERT (Buf != NULL);
+
CopyMem (&Value, Buf, sizeof (UINT32));
return NTOHL (Value);
}
/**
Put a UINT32 to the byte stream in network byte order.
+ ASSERT if Buf is NULL.
+
Converts a UINT32 from host byte order to network byte order. Then copy it to the
byte stream.
@param[in, out] Buf The buffer to put the UINT32.
@param[in] Data The data to be converted and put into the byte stream.
@@ -929,10 +966,12 @@ EFIAPI
NetPutUint32 (
IN OUT UINT8 *Buf,
IN UINT32 Data
)
{
+ ASSERT (Buf != NULL);
+
Data = HTONL (Data);
CopyMem (Buf, &Data, sizeof (UINT32));
}
@@ -1027,10 +1066,12 @@ NetListRemoveTail (
/**
Insert a new node entry after a designated node entry of a doubly linked list.
+ ASSERT if PrevEntry or NewEntry is NULL.
+
Inserts a new node entry donated by NewEntry after the node entry donated by PrevEntry
of the doubly linked list.
@param[in, out] PrevEntry The previous entry to insert after.
@param[in, out] NewEntry The new entry to insert.
@@ -1041,20 +1082,24 @@ EFIAPI
NetListInsertAfter (
IN OUT LIST_ENTRY *PrevEntry,
IN OUT LIST_ENTRY *NewEntry
)
{
+ ASSERT (PrevEntry != NULL && NewEntry != NULL);
+
NewEntry->BackLink = PrevEntry;
NewEntry->ForwardLink = PrevEntry->ForwardLink;
PrevEntry->ForwardLink->BackLink = NewEntry;
PrevEntry->ForwardLink = NewEntry;
}
/**
Insert a new node entry before a designated node entry of a doubly linked list.
+ ASSERT if PostEntry or NewEntry is NULL.
+
Inserts a new node entry donated by NewEntry after the node entry donated by PostEntry
of the doubly linked list.
@param[in, out] PostEntry The entry to insert before.
@param[in, out] NewEntry The new entry to insert.
@@ -1065,10 +1110,12 @@ EFIAPI
NetListInsertBefore (
IN OUT LIST_ENTRY *PostEntry,
IN OUT LIST_ENTRY *NewEntry
)
{
+ ASSERT (PostEntry != NULL && NewEntry != NULL);
+
NewEntry->ForwardLink = PostEntry;
NewEntry->BackLink = PostEntry->BackLink;
PostEntry->BackLink->ForwardLink = NewEntry;
PostEntry->BackLink = NewEntry;
}
@@ -1263,11 +1310,10 @@ NetMapClean (
If the number of the <Key, Value> pairs in the netmap is zero, return TRUE.
If Map is NULL, then ASSERT().
-
@param[in] Map The net map to test.
@return TRUE if the netmap is empty, otherwise FALSE.
**/
@@ -1283,10 +1329,12 @@ NetMapIsEmpty (
/**
Return the number of the <Key, Value> pairs in the netmap.
+ If Map is NULL, then ASSERT().
+
@param[in] Map The netmap to get the entry number.
@return The entry number in the netmap.
**/
@@ -1294,10 +1342,11 @@ UINTN
EFIAPI
NetMapGetCount (
IN NET_MAP *Map
)
{
+ ASSERT (Map != NULL);
return Map->Count;
}
/**
@@ -1358,10 +1407,11 @@ NetMapAllocItem (
Allocate an item to save the <Key, Value> pair and add corresponding node entry
to the beginning of the Used doubly linked list. The number of the <Key, Value>
pairs in the netmap increase by 1.
If Map is NULL, then ASSERT().
+ If Key is NULL, then ASSERT().
@param[in, out] Map The netmap to insert into.
@param[in] Key The user's key.
@param[in] Value The user's value for the key.
@@ -1377,11 +1427,11 @@ NetMapInsertHead (
IN VOID *Value OPTIONAL
)
{
NET_MAP_ITEM *Item;
- ASSERT (Map != NULL);
+ ASSERT (Map != NULL && Key != NULL);
Item = NetMapAllocItem (Map);
if (Item == NULL) {
return EFI_OUT_OF_RESOURCES;
@@ -1402,10 +1452,11 @@ NetMapInsertHead (
Allocate an item to save the <Key, Value> pair and add corresponding node entry
to the tail of the Used doubly linked list. The number of the <Key, Value>
pairs in the netmap increase by 1.
If Map is NULL, then ASSERT().
+ If Key is NULL, then ASSERT().
@param[in, out] Map The netmap to insert into.
@param[in] Key The user's key.
@param[in] Value The user's value for the key.
@@ -1421,11 +1472,11 @@ NetMapInsertTail (
IN VOID *Value OPTIONAL
)
{
NET_MAP_ITEM *Item;
- ASSERT (Map != NULL);
+ ASSERT (Map != NULL && Key != NULL);
Item = NetMapAllocItem (Map);
if (Item == NULL) {
return EFI_OUT_OF_RESOURCES;
@@ -1442,10 +1493,13 @@ NetMapInsertTail (
/**
Check whether the item is in the Map and return TRUE if it is.
+ If Map is NULL, then ASSERT().
+ If Item is NULL, then ASSERT().
+
@param[in] Map The netmap to search within.
@param[in] Item The item to search.
@return TRUE if the item is in the netmap, otherwise FALSE.
@@ -1456,10 +1510,12 @@ NetItemInMap (
IN NET_MAP_ITEM *Item
)
{
LIST_ENTRY *ListEntry;
+ ASSERT (Map != NULL && Item != NULL);
+
NET_LIST_FOR_EACH (ListEntry, &Map->Used) {
if (ListEntry == &Item->Link) {
return TRUE;
}
}
@@ -1473,10 +1529,11 @@ NetItemInMap (
Iterate the Used doubly linked list of the netmap to get every item. Compare the key of every
item with the key to search. It returns the point to the item contains the Key if found.
If Map is NULL, then ASSERT().
+ If Key is NULL, then ASSERT().
@param[in] Map The netmap to search within.
@param[in] Key The key to search.
@return The point to the item contains the Key, or NULL if Key isn't in the map.
@@ -1490,11 +1547,11 @@ NetMapFindKey (
)
{
LIST_ENTRY *Entry;
NET_MAP_ITEM *Item;
- ASSERT (Map != NULL);
+ ASSERT (Map != NULL && Key != NULL);
NET_LIST_FOR_EACH (Entry, &Map->Used) {
Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);
if (Item->Key == Key) {
@@ -2093,10 +2150,13 @@ NetLibGetVlanHandle (
}
/**
Get MAC address associated with the network service handle.
+ If MacAddress is NULL, then ASSERT().
+ If AddressSize is NULL, then ASSERT().
+
There should be MNP Service Binding Protocol installed on the input ServiceHandle.
If SNP is installed on the ServiceHandle or its parent handle, MAC address will
be retrieved from SNP. If no SNP found, try to get SNP mode data use MNP.
@param[in] ServiceHandle The handle where network service binding protocols are
@@ -2197,10 +2257,12 @@ NetLibGetMacAddress (
/**
Convert MAC address of the NIC associated with specified Service Binding Handle
to a unicode string. Callers are responsible for freeing the string storage.
+ If MacString is NULL, then ASSERT().
+
Locate simple network protocol associated with the Service Binding Handle and
get the mac address from SNP. Then convert the mac address into a unicode
string. It takes 2 unicode characters to represent a 1 byte binary buffer.
Plus one unicode character for the null-terminator.
@@ -2296,10 +2358,12 @@ NetLibGetMacString (
}
/**
Detect media status for specified network device.
+ If MediaPresent is NULL, then ASSERT().
+
The underlying UNDI driver may or may not support reporting media status from
GET_STATUS command (PXE_STATFLAGS_GET_STATUS_NO_MEDIA_SUPPORTED). This routine
will try to invoke Snp->GetStatus() to get the media status: if media already
present, it return directly; if media not present, it will stop SNP and then
restart SNP to get the latest media status, this give chance to get the correct
@@ -2404,10 +2468,14 @@ NetLibDetectMedia (
MCastFilter = AllocateCopyPool (
MCastFilterCount * sizeof (EFI_MAC_ADDRESS),
Snp->Mode->MCastFilter
);
ASSERT (MCastFilter != NULL);
+ if (MCastFilter == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ goto Exit;
+ }
ResetMCastFilters = FALSE;
}
//
@@ -2735,10 +2803,12 @@ ON_EXIT:
}
/**
Create an IPv4 device path node.
+ If Node is NULL, then ASSERT().
+
The header type of IPv4 device path node is MESSAGING_DEVICE_PATH.
The header subtype of IPv4 device path node is MSG_IPv4_DP.
Get other info from parameters to make up the whole IPv4 device path node.
@param[in, out] Node Pointer to the IPv4 device path node.
@@ -2762,10 +2832,12 @@ NetLibCreateIPv4DPathNode (
IN UINT16 RemotePort,
IN UINT16 Protocol,
IN BOOLEAN UseDefaultAddress
)
{
+ ASSERT (Node != NULL);
+
Node->Header.Type = MESSAGING_DEVICE_PATH;
Node->Header.SubType = MSG_IPv4_DP;
SetDevicePathNodeLength (&Node->Header, sizeof (IPv4_DEVICE_PATH));
CopyMem (&Node->LocalIpAddress, &LocalIp, sizeof (EFI_IPv4_ADDRESS));
@@ -2792,10 +2864,14 @@ NetLibCreateIPv4DPathNode (
}
/**
Create an IPv6 device path node.
+ If Node is NULL, then ASSERT().
+ If LocalIp is NULL, then ASSERT().
+ If RemoteIp is NULL, then ASSERT().
+
The header type of IPv6 device path node is MESSAGING_DEVICE_PATH.
The header subtype of IPv6 device path node is MSG_IPv6_DP.
Get other info from parameters to make up the whole IPv6 device path node.
@param[in, out] Node Pointer to the IPv6 device path node.
@@ -2817,10 +2893,12 @@ NetLibCreateIPv6DPathNode (
IN EFI_IPv6_ADDRESS *RemoteIp,
IN UINT16 RemotePort,
IN UINT16 Protocol
)
{
+ ASSERT (Node != NULL && LocalIp != NULL && RemoteIp != NULL);
+
Node->Header.Type = MESSAGING_DEVICE_PATH;
Node->Header.SubType = MSG_IPv6_DP;
SetDevicePathNodeLength (&Node->Header, sizeof (IPv6_DEVICE_PATH));
CopyMem (&Node->LocalIpAddress, LocalIp, sizeof (EFI_IPv6_ADDRESS));
@@ -2841,10 +2919,12 @@ NetLibCreateIPv6DPathNode (
}
/**
Find the UNDI/SNP handle from controller and protocol GUID.
+ If ProtocolGuid is NULL, then ASSERT().
+
For example, IP will open a MNP child to transmit/receive
packets, when MNP is stopped, IP should also be stopped. IP
needs to find its own private data which is related the IP's
service binding instance that is install on UNDI/SNP handle.
Now, the controller is either a MNP or ARP child handle. But
@@ -2868,10 +2948,12 @@ NetLibGetNicHandle (
EFI_HANDLE Handle;
EFI_STATUS Status;
UINTN OpenCount;
UINTN Index;
+ ASSERT (ProtocolGuid != NULL);
+
Status = gBS->OpenProtocolInformation (
Controller,
ProtocolGuid,
&OpenBuffer,
&OpenCount
@@ -3149,10 +3231,12 @@ NetLibIp6ToStr (
}
/**
This function obtains the system guid from the smbios table.
+ If SystemGuid is NULL, then ASSERT().
+
@param[out] SystemGuid The pointer of the returned system guid.
@retval EFI_SUCCESS Successfully obtained the system guid.
@retval EFI_NOT_FOUND Did not find the SMBIOS table.
@@ -3168,10 +3252,12 @@ NetLibGetSystemGuid (
SMBIOS_TABLE_3_0_ENTRY_POINT *Smbios30Table;
SMBIOS_STRUCTURE_POINTER Smbios;
SMBIOS_STRUCTURE_POINTER SmbiosEnd;
CHAR8 *String;
+ ASSERT (SystemGuid != NULL);
+
SmbiosTable = NULL;
Status = EfiGetSystemConfigurationTable (&gEfiSmbios3TableGuid, (VOID **) &Smbios30Table);
if (!(EFI_ERROR (Status) || Smbios30Table == NULL)) {
Smbios.Hdr = (SMBIOS_STRUCTURE *) (UINTN) Smbios30Table->TableAddress;
SmbiosEnd.Raw = (UINT8 *) (UINTN) (Smbios30Table->TableAddress + Smbios30Table->TableMaximumSize);
@@ -3234,11 +3320,14 @@ NetLibGetSystemGuid (
} while (Smbios.Raw < SmbiosEnd.Raw);
return EFI_NOT_FOUND;
}
/**
- Create Dns QName according the queried domain name.
+ Create Dns QName according the queried domain name.
+
+ If DomainName is NULL, then ASSERT().
+
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.
@@ -3260,10 +3349,12 @@ NetLibCreateDnsQName (
CHAR8 *Header;
CHAR8 *Tail;
UINTN Len;
UINTN Index;
+ ASSERT (DomainName != NULL);
+
QueryName = NULL;
QueryNameSize = 0;
Header = NULL;
Tail = NULL;
--
1.9.5.msysgit.1
_______________________________________________
edk2-devel mailing list
edk2-devel@lists.01.org
https://lists.01.org/mailman/listinfo/edk2-devel
Reviewed-by: Jiaxin Wu <jiaxin.wu@intel.com>
> -----Original Message-----
> From: Wang, Fan
> Sent: Wednesday, January 3, 2018 10:32 AM
> To: edk2-devel@lists.01.org
> Cc: Wang, Fan <fan.wang@intel.com>; Fu, Siyuan <siyuan.fu@intel.com>; Ye,
> Ting <ting.ye@intel.com>; Wu, Jiaxin <jiaxin.wu@intel.com>
> Subject: [Patch 2/3] MdeModulePkg/DxeNetLib: Add parameter check and
> ASSERT handling.
>
> From: Wang Fan <fan.wang@intel.com>
>
> * Library API should check the input parameters before use, or
> ASSERT to tell it has to meet some requirements. But in DxeNetLib,
> not all functions follows this rule.
> * ASSERT shouldn't be used as error handling, add some handling code
> for errors.
> * Add some ASSERT commence in function notes.
>
> Cc: Fu Siyuan <siyuan.fu@intel.com>
> Cc: Ye Ting <ting.ye@intel.com>
> Cc: Jiaxin Wu <jiaxin.wu@intel.com>
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Wang Fan <fan.wang@intel.com>
> ---
> MdeModulePkg/Library/DxeNetLib/DxeNetLib.c | 119
> +++++++++++++++++++++++++----
> 1 file changed, 105 insertions(+), 14 deletions(-)
>
> diff --git a/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
> b/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
> index 0f00f79..90f17b7 100644
> --- a/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
> +++ b/MdeModulePkg/Library/DxeNetLib/DxeNetLib.c
> @@ -1,9 +1,9 @@
> /** @file
> Network library.
>
> -Copyright (c) 2005 - 2017, Intel Corporation. All rights reserved.<BR>
> +Copyright (c) 2005 - 2018, Intel Corporation. All rights reserved.<BR>
> (C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>
> 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
> http://opensource.org/licenses/bsd-license.php
> @@ -196,10 +196,11 @@ SyslogLocateSnp (
> Transmit a syslog packet synchronously through SNP. The Packet
> already has the ethernet header prepended. This function should
> fill in the source MAC because it will try to locate a SNP each
> time it is called to avoid the problem if SNP is unloaded.
> This code snip is copied from MNP.
> + If Packet is NULL, then ASSERT().
>
> @param[in] Packet The Syslog packet
> @param[in] Length The length of the packet
>
> @retval EFI_DEVICE_ERROR Failed to locate a usable SNP protocol
> @@ -217,10 +218,12 @@ SyslogSendPacket (
> ETHER_HEAD *Ether;
> EFI_STATUS Status;
> EFI_EVENT TimeoutEvent;
> UINT8 *TxBuf;
>
> + ASSERT (Packet != NULL);
> +
> Snp = SyslogLocateSnp ();
>
> if (Snp == NULL) {
> return EFI_DEVICE_ERROR;
> }
> @@ -308,11 +311,11 @@ ON_EXIT:
> @param[in] Line The line of code in the File that contains the current log
> @param[in] Message The log message
> @param[in] BufLen The lenght of the Buf
> @param[out] Buf The buffer to put the packet data
>
> - @return The length of the syslog packet built.
> + @return The length of the syslog packet built, 0 represents no packet is
> built.
>
> **/
> UINT32
> SyslogBuildPacket (
> IN UINT32 Level,
> @@ -322,10 +325,11 @@ SyslogBuildPacket (
> IN UINT8 *Message,
> IN UINT32 BufLen,
> OUT CHAR8 *Buf
> )
> {
> + EFI_STATUS Status;
> ETHER_HEAD *Ether;
> IP4_HEAD *Ip4;
> EFI_UDP_HEADER *Udp4;
> EFI_TIME Time;
> UINT32 Pri;
> @@ -377,12 +381,14 @@ SyslogBuildPacket (
>
> //
> // Build the syslog message body with <PRI> Timestamp machine module
> Message
> //
> Pri = ((NET_SYSLOG_FACILITY & 31) << 3) | (Level & 7);
> - gRT->GetTime (&Time, NULL);
> - ASSERT ((Time.Month <= 12) && (Time.Month >= 1));
> + Status = gRT->GetTime (&Time, NULL);
> + if (EFI_ERROR (Status)) {
> + return 0;
> + }
>
> //
> // Use %a to format the ASCII strings, %s to format UNICODE strings
> //
> Len = 0;
> @@ -437,10 +443,12 @@ SyslogBuildPacket (
> __FILE__,
> __LINE__,
> NetDebugASPrint ("State transit to %a\n", Name)
> )
>
> + If Format is NULL, then ASSERT().
> +
> @param Format The ASCII format string.
> @param ... The variable length parameter whose format is determined
> by the Format string.
>
> @return The buffer containing the formatted message,
> @@ -455,10 +463,12 @@ NetDebugASPrint (
> )
> {
> VA_LIST Marker;
> CHAR8 *Buf;
>
> + ASSERT (Format != NULL);
> +
> Buf = (CHAR8 *) AllocatePool (NET_DEBUG_MSG_LEN);
>
> if (Buf == NULL) {
> return NULL;
> }
> @@ -481,11 +491,12 @@ NetDebugASPrint (
> @param File The file that contains the log.
> @param Line The exact line that contains the log.
> @param Message The user message to log.
>
> @retval EFI_INVALID_PARAMETER Any input parameter is invalid.
> - @retval EFI_OUT_OF_RESOURCES Failed to allocate memory for the
> packet
> + @retval EFI_OUT_OF_RESOURCES Failed to allocate memory for the
> packet.
> + @retval EFI_DEVICE_ERROR Device error occurs.
> @retval EFI_SUCCESS The log is discard because that it is more verbose
> than the mNetDebugLevelMax. Or, it has been sent out.
> **/
> EFI_STATUS
> EFIAPI
> @@ -502,11 +513,11 @@ NetDebugOutput (
> EFI_STATUS Status;
>
> //
> // Check whether the message should be sent out
> //
> - if (Message == NULL) {
> + if (Message == NULL || File == NULL || Module == NULL) {
> return EFI_INVALID_PARAMETER;
> }
>
> if (Level > mNetDebugLevelMax) {
> Status = EFI_SUCCESS;
> @@ -535,13 +546,17 @@ NetDebugOutput (
> Line,
> Message,
> NET_SYSLOG_PACKET_LEN,
> Packet
> );
> + if (Len == 0) {
> + Status = EFI_DEVICE_ERROR;
> + } else {
> + mSyslogPacketSeq++;
> + Status = SyslogSendPacket (Packet, Len);
> + }
>
> - mSyslogPacketSeq++;
> - Status = SyslogSendPacket (Packet, Len);
> FreePool (Packet);
>
> ON_EXIT:
> FreePool (Message);
> return Status;
> @@ -673,10 +688,12 @@ NetIp4IsUnicast (
> }
>
> /**
> Check whether the incoming IPv6 address is a valid unicast address.
>
> + ASSERT if Ip6 is NULL.
> +
> If the address is a multicast address has binary 0xFF at the start, it is not
> a valid unicast address. If the address is unspecified ::, it is not a valid
> unicast address to be assigned to any node. If the address is loopback
> address
> ::1, it is also not a valid unicast address to be assigned to any physical
> interface.
> @@ -693,10 +710,12 @@ NetIp6IsValidUnicast (
> )
> {
> UINT8 Byte;
> UINT8 Index;
>
> + ASSERT (Ip6 != NULL);
> +
> if (Ip6->Addr[0] == 0xFF) {
> return FALSE;
> }
>
> for (Index = 0; Index < 15; Index++) {
> @@ -715,10 +734,12 @@ NetIp6IsValidUnicast (
> }
>
> /**
> Check whether the incoming Ipv6 address is the unspecified address or not.
>
> + ASSERT if Ip6 is NULL.
> +
> @param[in] Ip6 - Ip6 address, in network order.
>
> @retval TRUE - Yes, unspecified
> @retval FALSE - No
>
> @@ -729,10 +750,12 @@ NetIp6IsUnspecifiedAddr (
> IN EFI_IPv6_ADDRESS *Ip6
> )
> {
> UINT8 Index;
>
> + ASSERT (Ip6 != NULL);
> +
> for (Index = 0; Index < 16; Index++) {
> if (Ip6->Addr[Index] != 0) {
> return FALSE;
> }
> }
> @@ -741,10 +764,12 @@ NetIp6IsUnspecifiedAddr (
> }
>
> /**
> Check whether the incoming Ipv6 address is a link-local address.
>
> + ASSERT if Ip6 is NULL.
> +
> @param[in] Ip6 - Ip6 address, in network order.
>
> @retval TRUE - Yes, link-local address
> @retval FALSE - No
>
> @@ -777,10 +802,13 @@ NetIp6IsLinkLocalAddr (
> }
>
> /**
> Check whether the Ipv6 address1 and address2 are on the connected
> network.
>
> + ASSERT if Ip1 or Ip2 is NULL.
> + ASSERT if PrefixLength exceeds IP6_PREFIX_MAX.
> +
> @param[in] Ip1 - Ip6 address1, in network order.
> @param[in] Ip2 - Ip6 address2, in network order.
> @param[in] PrefixLength - The prefix length of the checking net.
>
> @retval TRUE - Yes, connected.
> @@ -813,11 +841,10 @@ NetIp6IsNetEqual (
> }
>
> if (Bit > 0) {
> Mask = (UINT8) (0xFF << (8 - Bit));
>
> - ASSERT (Byte < 16);
> if ((Ip1->Addr[Byte] & Mask) != (Ip2->Addr[Byte] & Mask)) {
> return FALSE;
> }
> }
>
> @@ -826,10 +853,12 @@ NetIp6IsNetEqual (
>
>
> /**
> Switches the endianess of an IPv6 address
>
> + ASSERT if Ip6 is NULL.
> +
> This function swaps the bytes in a 128-bit IPv6 address to switch the value
> from little endian to big endian or vice versa. The byte swapped value is
> returned.
>
> @param Ip6 Points to an IPv6 address
> @@ -844,10 +873,12 @@ Ip6Swap128 (
> )
> {
> UINT64 High;
> UINT64 Low;
>
> + ASSERT (Ip6 != NULL);
> +
> CopyMem (&High, Ip6, sizeof (UINT64));
> CopyMem (&Low, &Ip6->Addr[8], sizeof (UINT64));
>
> High = SwapBytes64 (High);
> Low = SwapBytes64 (Low);
> @@ -891,10 +922,12 @@ NetRandomInitSeed (
>
>
> /**
> Extract a UINT32 from a byte stream.
>
> + ASSERT if Buf is NULL.
> +
> Copy a UINT32 from a byte stream, then converts it from Network
> byte order to host byte order. Use this function to avoid alignment error.
>
> @param[in] Buf The buffer to extract the UINT32.
>
> @@ -907,18 +940,22 @@ NetGetUint32 (
> IN UINT8 *Buf
> )
> {
> UINT32 Value;
>
> + ASSERT (Buf != NULL);
> +
> CopyMem (&Value, Buf, sizeof (UINT32));
> return NTOHL (Value);
> }
>
>
> /**
> Put a UINT32 to the byte stream in network byte order.
>
> + ASSERT if Buf is NULL.
> +
> Converts a UINT32 from host byte order to network byte order. Then copy
> it to the
> byte stream.
>
> @param[in, out] Buf The buffer to put the UINT32.
> @param[in] Data The data to be converted and put into the byte
> stream.
> @@ -929,10 +966,12 @@ EFIAPI
> NetPutUint32 (
> IN OUT UINT8 *Buf,
> IN UINT32 Data
> )
> {
> + ASSERT (Buf != NULL);
> +
> Data = HTONL (Data);
> CopyMem (Buf, &Data, sizeof (UINT32));
> }
>
>
> @@ -1027,10 +1066,12 @@ NetListRemoveTail (
>
>
> /**
> Insert a new node entry after a designated node entry of a doubly linked
> list.
>
> + ASSERT if PrevEntry or NewEntry is NULL.
> +
> Inserts a new node entry donated by NewEntry after the node entry
> donated by PrevEntry
> of the doubly linked list.
>
> @param[in, out] PrevEntry The previous entry to insert after.
> @param[in, out] NewEntry The new entry to insert.
> @@ -1041,20 +1082,24 @@ EFIAPI
> NetListInsertAfter (
> IN OUT LIST_ENTRY *PrevEntry,
> IN OUT LIST_ENTRY *NewEntry
> )
> {
> + ASSERT (PrevEntry != NULL && NewEntry != NULL);
> +
> NewEntry->BackLink = PrevEntry;
> NewEntry->ForwardLink = PrevEntry->ForwardLink;
> PrevEntry->ForwardLink->BackLink = NewEntry;
> PrevEntry->ForwardLink = NewEntry;
> }
>
>
> /**
> Insert a new node entry before a designated node entry of a doubly linked
> list.
>
> + ASSERT if PostEntry or NewEntry is NULL.
> +
> Inserts a new node entry donated by NewEntry after the node entry
> donated by PostEntry
> of the doubly linked list.
>
> @param[in, out] PostEntry The entry to insert before.
> @param[in, out] NewEntry The new entry to insert.
> @@ -1065,10 +1110,12 @@ EFIAPI
> NetListInsertBefore (
> IN OUT LIST_ENTRY *PostEntry,
> IN OUT LIST_ENTRY *NewEntry
> )
> {
> + ASSERT (PostEntry != NULL && NewEntry != NULL);
> +
> NewEntry->ForwardLink = PostEntry;
> NewEntry->BackLink = PostEntry->BackLink;
> PostEntry->BackLink->ForwardLink = NewEntry;
> PostEntry->BackLink = NewEntry;
> }
> @@ -1263,11 +1310,10 @@ NetMapClean (
>
> If the number of the <Key, Value> pairs in the netmap is zero, return TRUE.
>
> If Map is NULL, then ASSERT().
>
> -
> @param[in] Map The net map to test.
>
> @return TRUE if the netmap is empty, otherwise FALSE.
>
> **/
> @@ -1283,10 +1329,12 @@ NetMapIsEmpty (
>
>
> /**
> Return the number of the <Key, Value> pairs in the netmap.
>
> + If Map is NULL, then ASSERT().
> +
> @param[in] Map The netmap to get the entry number.
>
> @return The entry number in the netmap.
>
> **/
> @@ -1294,10 +1342,11 @@ UINTN
> EFIAPI
> NetMapGetCount (
> IN NET_MAP *Map
> )
> {
> + ASSERT (Map != NULL);
> return Map->Count;
> }
>
>
> /**
> @@ -1358,10 +1407,11 @@ NetMapAllocItem (
> Allocate an item to save the <Key, Value> pair and add corresponding node
> entry
> to the beginning of the Used doubly linked list. The number of the <Key,
> Value>
> pairs in the netmap increase by 1.
>
> If Map is NULL, then ASSERT().
> + If Key is NULL, then ASSERT().
>
> @param[in, out] Map The netmap to insert into.
> @param[in] Key The user's key.
> @param[in] Value The user's value for the key.
>
> @@ -1377,11 +1427,11 @@ NetMapInsertHead (
> IN VOID *Value OPTIONAL
> )
> {
> NET_MAP_ITEM *Item;
>
> - ASSERT (Map != NULL);
> + ASSERT (Map != NULL && Key != NULL);
>
> Item = NetMapAllocItem (Map);
>
> if (Item == NULL) {
> return EFI_OUT_OF_RESOURCES;
> @@ -1402,10 +1452,11 @@ NetMapInsertHead (
> Allocate an item to save the <Key, Value> pair and add corresponding node
> entry
> to the tail of the Used doubly linked list. The number of the <Key, Value>
> pairs in the netmap increase by 1.
>
> If Map is NULL, then ASSERT().
> + If Key is NULL, then ASSERT().
>
> @param[in, out] Map The netmap to insert into.
> @param[in] Key The user's key.
> @param[in] Value The user's value for the key.
>
> @@ -1421,11 +1472,11 @@ NetMapInsertTail (
> IN VOID *Value OPTIONAL
> )
> {
> NET_MAP_ITEM *Item;
>
> - ASSERT (Map != NULL);
> + ASSERT (Map != NULL && Key != NULL);
>
> Item = NetMapAllocItem (Map);
>
> if (Item == NULL) {
> return EFI_OUT_OF_RESOURCES;
> @@ -1442,10 +1493,13 @@ NetMapInsertTail (
>
>
> /**
> Check whether the item is in the Map and return TRUE if it is.
>
> + If Map is NULL, then ASSERT().
> + If Item is NULL, then ASSERT().
> +
> @param[in] Map The netmap to search within.
> @param[in] Item The item to search.
>
> @return TRUE if the item is in the netmap, otherwise FALSE.
>
> @@ -1456,10 +1510,12 @@ NetItemInMap (
> IN NET_MAP_ITEM *Item
> )
> {
> LIST_ENTRY *ListEntry;
>
> + ASSERT (Map != NULL && Item != NULL);
> +
> NET_LIST_FOR_EACH (ListEntry, &Map->Used) {
> if (ListEntry == &Item->Link) {
> return TRUE;
> }
> }
> @@ -1473,10 +1529,11 @@ NetItemInMap (
>
> Iterate the Used doubly linked list of the netmap to get every item.
> Compare the key of every
> item with the key to search. It returns the point to the item contains the
> Key if found.
>
> If Map is NULL, then ASSERT().
> + If Key is NULL, then ASSERT().
>
> @param[in] Map The netmap to search within.
> @param[in] Key The key to search.
>
> @return The point to the item contains the Key, or NULL if Key isn't in the
> map.
> @@ -1490,11 +1547,11 @@ NetMapFindKey (
> )
> {
> LIST_ENTRY *Entry;
> NET_MAP_ITEM *Item;
>
> - ASSERT (Map != NULL);
> + ASSERT (Map != NULL && Key != NULL);
>
> NET_LIST_FOR_EACH (Entry, &Map->Used) {
> Item = NET_LIST_USER_STRUCT (Entry, NET_MAP_ITEM, Link);
>
> if (Item->Key == Key) {
> @@ -2093,10 +2150,13 @@ NetLibGetVlanHandle (
> }
>
> /**
> Get MAC address associated with the network service handle.
>
> + If MacAddress is NULL, then ASSERT().
> + If AddressSize is NULL, then ASSERT().
> +
> There should be MNP Service Binding Protocol installed on the input
> ServiceHandle.
> If SNP is installed on the ServiceHandle or its parent handle, MAC address
> will
> be retrieved from SNP. If no SNP found, try to get SNP mode data use MNP.
>
> @param[in] ServiceHandle The handle where network service binding
> protocols are
> @@ -2197,10 +2257,12 @@ NetLibGetMacAddress (
>
> /**
> Convert MAC address of the NIC associated with specified Service Binding
> Handle
> to a unicode string. Callers are responsible for freeing the string storage.
>
> + If MacString is NULL, then ASSERT().
> +
> Locate simple network protocol associated with the Service Binding Handle
> and
> get the mac address from SNP. Then convert the mac address into a
> unicode
> string. It takes 2 unicode characters to represent a 1 byte binary buffer.
> Plus one unicode character for the null-terminator.
>
> @@ -2296,10 +2358,12 @@ NetLibGetMacString (
> }
>
> /**
> Detect media status for specified network device.
>
> + If MediaPresent is NULL, then ASSERT().
> +
> The underlying UNDI driver may or may not support reporting media status
> from
> GET_STATUS command
> (PXE_STATFLAGS_GET_STATUS_NO_MEDIA_SUPPORTED). This routine
> will try to invoke Snp->GetStatus() to get the media status: if media already
> present, it return directly; if media not present, it will stop SNP and then
> restart SNP to get the latest media status, this give chance to get the
> correct
> @@ -2404,10 +2468,14 @@ NetLibDetectMedia (
> MCastFilter = AllocateCopyPool (
> MCastFilterCount * sizeof (EFI_MAC_ADDRESS),
> Snp->Mode->MCastFilter
> );
> ASSERT (MCastFilter != NULL);
> + if (MCastFilter == NULL) {
> + Status = EFI_OUT_OF_RESOURCES;
> + goto Exit;
> + }
>
> ResetMCastFilters = FALSE;
> }
>
> //
> @@ -2735,10 +2803,12 @@ ON_EXIT:
> }
>
> /**
> Create an IPv4 device path node.
>
> + If Node is NULL, then ASSERT().
> +
> The header type of IPv4 device path node is MESSAGING_DEVICE_PATH.
> The header subtype of IPv4 device path node is MSG_IPv4_DP.
> Get other info from parameters to make up the whole IPv4 device path
> node.
>
> @param[in, out] Node Pointer to the IPv4 device path node.
> @@ -2762,10 +2832,12 @@ NetLibCreateIPv4DPathNode (
> IN UINT16 RemotePort,
> IN UINT16 Protocol,
> IN BOOLEAN UseDefaultAddress
> )
> {
> + ASSERT (Node != NULL);
> +
> Node->Header.Type = MESSAGING_DEVICE_PATH;
> Node->Header.SubType = MSG_IPv4_DP;
> SetDevicePathNodeLength (&Node->Header, sizeof (IPv4_DEVICE_PATH));
>
> CopyMem (&Node->LocalIpAddress, &LocalIp, sizeof (EFI_IPv4_ADDRESS));
> @@ -2792,10 +2864,14 @@ NetLibCreateIPv4DPathNode (
> }
>
> /**
> Create an IPv6 device path node.
>
> + If Node is NULL, then ASSERT().
> + If LocalIp is NULL, then ASSERT().
> + If RemoteIp is NULL, then ASSERT().
> +
> The header type of IPv6 device path node is MESSAGING_DEVICE_PATH.
> The header subtype of IPv6 device path node is MSG_IPv6_DP.
> Get other info from parameters to make up the whole IPv6 device path
> node.
>
> @param[in, out] Node Pointer to the IPv6 device path node.
> @@ -2817,10 +2893,12 @@ NetLibCreateIPv6DPathNode (
> IN EFI_IPv6_ADDRESS *RemoteIp,
> IN UINT16 RemotePort,
> IN UINT16 Protocol
> )
> {
> + ASSERT (Node != NULL && LocalIp != NULL && RemoteIp != NULL);
> +
> Node->Header.Type = MESSAGING_DEVICE_PATH;
> Node->Header.SubType = MSG_IPv6_DP;
> SetDevicePathNodeLength (&Node->Header, sizeof (IPv6_DEVICE_PATH));
>
> CopyMem (&Node->LocalIpAddress, LocalIp, sizeof (EFI_IPv6_ADDRESS));
> @@ -2841,10 +2919,12 @@ NetLibCreateIPv6DPathNode (
> }
>
> /**
> Find the UNDI/SNP handle from controller and protocol GUID.
>
> + If ProtocolGuid is NULL, then ASSERT().
> +
> For example, IP will open a MNP child to transmit/receive
> packets, when MNP is stopped, IP should also be stopped. IP
> needs to find its own private data which is related the IP's
> service binding instance that is install on UNDI/SNP handle.
> Now, the controller is either a MNP or ARP child handle. But
> @@ -2868,10 +2948,12 @@ NetLibGetNicHandle (
> EFI_HANDLE Handle;
> EFI_STATUS Status;
> UINTN OpenCount;
> UINTN Index;
>
> + ASSERT (ProtocolGuid != NULL);
> +
> Status = gBS->OpenProtocolInformation (
> Controller,
> ProtocolGuid,
> &OpenBuffer,
> &OpenCount
> @@ -3149,10 +3231,12 @@ NetLibIp6ToStr (
> }
>
> /**
> This function obtains the system guid from the smbios table.
>
> + If SystemGuid is NULL, then ASSERT().
> +
> @param[out] SystemGuid The pointer of the returned system guid.
>
> @retval EFI_SUCCESS Successfully obtained the system guid.
> @retval EFI_NOT_FOUND Did not find the SMBIOS table.
>
> @@ -3168,10 +3252,12 @@ NetLibGetSystemGuid (
> SMBIOS_TABLE_3_0_ENTRY_POINT *Smbios30Table;
> SMBIOS_STRUCTURE_POINTER Smbios;
> SMBIOS_STRUCTURE_POINTER SmbiosEnd;
> CHAR8 *String;
>
> + ASSERT (SystemGuid != NULL);
> +
> SmbiosTable = NULL;
> Status = EfiGetSystemConfigurationTable (&gEfiSmbios3TableGuid, (VOID
> **) &Smbios30Table);
> if (!(EFI_ERROR (Status) || Smbios30Table == NULL)) {
> Smbios.Hdr = (SMBIOS_STRUCTURE *) (UINTN) Smbios30Table-
> >TableAddress;
> SmbiosEnd.Raw = (UINT8 *) (UINTN) (Smbios30Table->TableAddress +
> Smbios30Table->TableMaximumSize);
> @@ -3234,11 +3320,14 @@ NetLibGetSystemGuid (
> } while (Smbios.Raw < SmbiosEnd.Raw);
> return EFI_NOT_FOUND;
> }
>
> /**
> - Create Dns QName according the queried domain name.
> + Create Dns QName according the queried domain name.
> +
> + If DomainName is NULL, then ASSERT().
> +
> 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.
> @@ -3260,10 +3349,12 @@ NetLibCreateDnsQName (
> CHAR8 *Header;
> CHAR8 *Tail;
> UINTN Len;
> UINTN Index;
>
> + ASSERT (DomainName != NULL);
> +
> QueryName = NULL;
> QueryNameSize = 0;
> Header = NULL;
> Tail = NULL;
>
> --
> 1.9.5.msysgit.1
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