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src/Cedar/Hub.c: resolve null pointer dereference found by coverity,

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also cleanup a code based on PVS analyzer findings

src/Cedar/Hub.c	5279	warn	V547 Expression 'e->UpdatedTime <= oldest_time' is always true.
src/Cedar/Hub.c	5840	warn	V581 The conditional expressions of the 'if' statements situated alongside each other are identical. Check lines: 5828, 5840.
This commit is contained in:
Ilya Shipitsin 2018-09-18 10:52:04 +05:00
parent 93c962fb68
commit 621fffbfbd
1 changed files with 3 additions and 10 deletions
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13
src/Cedar/Hub.c
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@ -5264,7 +5264,6 @@ bool IsIPManagementTargetForHUB(IP *ip, HUB *hub)
void DeleteOldIpTableEntry(LIST *o)
{
UINT i;
UINT64 oldest_time = 0xffffffffffffffffULL;
IP_TABLE_ENTRY *old = NULL;
// Validate arguments
if (o == NULL)
@ -5275,11 +5274,7 @@ void DeleteOldIpTableEntry(LIST *o)
for (i = 0;i < LIST_NUM(o);i++)
{
IP_TABLE_ENTRY *e = LIST_DATA(o, i);
if (e->UpdatedTime <= oldest_time)
{
old = e;
}
old = e;
}
if (old != NULL)
@ -5394,7 +5389,7 @@ void StorePacketToHubPa(HUB_PA *dest, SESSION *src, void *data, UINT size, PKT *
}
}
if (src != NULL && src->Hub != NULL && src->Hub->Option != NULL && src->Hub->Option->FixForDLinkBPDU)
if (packet != NULL && src != NULL && src->Hub != NULL && src->Hub->Option != NULL && src->Hub->Option->FixForDLinkBPDU)
{
// Measures for D-Link bug
UCHAR *mac = packet->MacAddressSrc;
@ -5840,10 +5835,8 @@ UPDATE_DHCP_ALLOC_ENTRY:
DeleteOldIpTableEntry(hub->IpTable);
}
Insert(hub->IpTable, e);
}
if (new_entry)
{
if ((hub->Option != NULL && hub->Option->NoDhcpPacketLogOutsideHub == false) || mac_table->Session != s)
{
char dhcp_mac_addr[64];