349 lines
8 KiB
C++
349 lines
8 KiB
C++
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/*
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Copyright (c) 1997-1999 Microsoft Corporation
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Module Name:
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sdpconn.cpp
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Abstract:
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Author:
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*/
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#include "sdppch.h"
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#include "sdpconn.h"
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#include "sdpltran.h"
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// limited character strings
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const CHAR *LIMITED_NETWORK_TYPES[] = {INTERNET_STRING};
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const BYTE NUM_NETWORK_TYPES = sizeof(LIMITED_NETWORK_TYPES)/sizeof(CHAR *);
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const CHAR *LIMITED_ADDRESS_TYPES[] = {IP4_STRING};
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const BYTE NUM_ADDRESS_TYPES = sizeof(LIMITED_ADDRESS_TYPES)/sizeof(CHAR *);
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// line transition states
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enum CONNECTION_TRANSITION_STATES
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{
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CONNECTION_START,
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CONNECTION_NETWORK_TYPE,
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CONNECTION_ADDRESS_TYPE,
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CONNECTION_MCAST_ADDRESS,
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CONNECTION_UCAST_ADDRESS,
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CONNECTION_TTL,
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CONNECTION_TTL_NUM_ADDRESSES,
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CONNECTION_NUM_ADDRESSES
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};
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// table for connection line transitions
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const LINE_TRANSITION g_ConnectionStartTransitions[] = {
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{CHAR_BLANK, CONNECTION_NETWORK_TYPE }
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};
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const LINE_TRANSITION g_ConnectionNetworkTypeTransitions[] = {
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{CHAR_BLANK, CONNECTION_ADDRESS_TYPE }
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};
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const LINE_TRANSITION g_ConnectionAddressTypeTransitions[] = {
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{CHAR_BACK_SLASH, CONNECTION_MCAST_ADDRESS},
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{CHAR_NEWLINE, CONNECTION_UCAST_ADDRESS}
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};
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const LINE_TRANSITION g_ConnectionMcastAddressTransitions[] = {
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{CHAR_BACK_SLASH, CONNECTION_TTL_NUM_ADDRESSES},
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{CHAR_NEWLINE, CONNECTION_TTL }
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};
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/* no transitions */
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const LINE_TRANSITION *g_ConnectionUcastAddressTransitions = NULL;
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/* no transitions */
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const LINE_TRANSITION *g_ConnectionTtlTransitions = NULL;
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const LINE_TRANSITION g_ConnectionTtlNumAddressesTransitions[] ={
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{CHAR_NEWLINE, CONNECTION_NUM_ADDRESSES}
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};
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/* no transitions */
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const LINE_TRANSITION *g_ConnectionNumAddressesTransitions = NULL;
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LINE_TRANSITION_INFO g_ConnectionTransitionInfo[] = {
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LINE_TRANSITION_ENTRY(CONNECTION_START, g_ConnectionStartTransitions),
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LINE_TRANSITION_ENTRY(CONNECTION_NETWORK_TYPE, g_ConnectionNetworkTypeTransitions),
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LINE_TRANSITION_ENTRY(CONNECTION_ADDRESS_TYPE, g_ConnectionAddressTypeTransitions),
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LINE_TRANSITION_ENTRY(CONNECTION_MCAST_ADDRESS, g_ConnectionMcastAddressTransitions),
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LINE_TRANSITION_ENTRY(CONNECTION_UCAST_ADDRESS, g_ConnectionUcastAddressTransitions),
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LINE_TRANSITION_ENTRY(CONNECTION_TTL, g_ConnectionTtlTransitions),
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LINE_TRANSITION_ENTRY(CONNECTION_TTL_NUM_ADDRESSES, g_ConnectionTtlNumAddressesTransitions),
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LINE_TRANSITION_ENTRY(CONNECTION_NUM_ADDRESSES, g_ConnectionNumAddressesTransitions)
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};
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SDP_LINE_TRANSITION g_ConnectionTransition(
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g_ConnectionTransitionInfo,
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sizeof(g_ConnectionTransitionInfo)/sizeof(LINE_TRANSITION_INFO)
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);
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SDP_CONNECTION::SDP_CONNECTION(
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)
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: SDP_VALUE(SDP_INVALID_CONNECTION_FIELD, CONNECTION_STRING, &g_ConnectionTransition),
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m_NetworkType(LIMITED_NETWORK_TYPES, NUM_NETWORK_TYPES),
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m_AddressType(LIMITED_ADDRESS_TYPES, NUM_ADDRESS_TYPES)
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{
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m_NumAddresses.SetValue(1);
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}
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void
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SDP_CONNECTION::InternalReset(
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)
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{
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m_NetworkType.Reset();
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m_AddressType.Reset();
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m_StartAddress.Reset();
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m_Ttl.Reset();
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m_NumAddresses.Reset();
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}
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HRESULT
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SDP_CONNECTION::SetConnection(
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IN BSTR StartAddress,
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IN ULONG NumAddresses,
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IN BYTE Ttl
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)
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{
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// validate the address
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HRESULT ToReturn = m_StartAddress.SetAddress(StartAddress);
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if ( FAILED(ToReturn) )
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{
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return ToReturn;
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}
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// if multicast, valid number of addresses and ttl values are expected
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// set the num addresses and
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if ( m_StartAddress.IsMulticast() )
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{
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if ( (0 == NumAddresses) || (0 == Ttl) )
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{
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return E_INVALIDARG;
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}
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m_NumAddresses.SetValueAndFlag(NumAddresses);
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m_Ttl.SetValueAndFlag(Ttl);
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}
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else // invalidate the num addresses and ttl fields
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{
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m_NumAddresses.Reset();
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m_Ttl.Reset();
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}
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// if the network type is not valid, parse in the default IN network type
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if ( !m_NetworkType.IsValid() )
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{
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if ( !m_NetworkType.ParseToken("IN") )
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{
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return HRESULT_FROM_ERROR_CODE(GetLastError());
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}
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}
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// if the address type is not valid, parse in the default IP4 address type
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if ( !m_AddressType.IsValid() )
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{
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if ( !m_AddressType.ParseToken("IP4") )
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{
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return HRESULT_FROM_ERROR_CODE(GetLastError());
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}
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}
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// clear the field and separator arrays
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m_FieldArray.RemoveAll();
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m_SeparatorCharArray.RemoveAll();
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// fill in the field, separator char arrays with network/address type and
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// the address, if required
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if ( 0 == m_FieldArray.GetSize() )
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{
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try
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{
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m_FieldArray.SetAtGrow(0, &m_NetworkType);
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m_SeparatorCharArray.SetAtGrow(0, CHAR_BLANK);
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m_FieldArray.SetAtGrow(1, &m_AddressType);
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m_SeparatorCharArray.SetAtGrow(1, CHAR_BLANK);
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m_FieldArray.SetAtGrow(2, &m_StartAddress);
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}
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catch(...)
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{
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m_FieldArray.RemoveAll();
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m_SeparatorCharArray.RemoveAll();
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return E_OUTOFMEMORY;
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}
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}
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ASSERT(3 <= m_FieldArray.GetSize());
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// if multicast address, fill in the next three fields
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if ( m_StartAddress.IsMulticast() )
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{
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if ( 4 > m_FieldArray.GetSize() )
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{
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// ZoltanS bugfix: m_Ttl and m_NumAddresses were reversed below!
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try
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{
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m_SeparatorCharArray.SetAtGrow(2, CHAR_BACK_SLASH);
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m_FieldArray.SetAtGrow(3, &m_Ttl);
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m_SeparatorCharArray.SetAtGrow(3, CHAR_BACK_SLASH);
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m_FieldArray.SetAtGrow(4, &m_NumAddresses);
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m_SeparatorCharArray.SetAtGrow(4, CHAR_NEWLINE);
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}
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catch(...)
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{
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m_FieldArray.RemoveAll();
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m_SeparatorCharArray.RemoveAll();
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return E_OUTOFMEMORY;
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}
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}
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ASSERT(5 == m_FieldArray.GetSize());
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}
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else
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{
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// else, unicast, fill in the next field and remove from the next two
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try
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{
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m_SeparatorCharArray.SetAtGrow(2, CHAR_NEWLINE);
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}
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catch(...)
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{
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m_FieldArray.RemoveAll();
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m_SeparatorCharArray.RemoveAll();
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return E_OUTOFMEMORY;
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}
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if ( 4 <= m_FieldArray.GetSize() )
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{
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ASSERT(5 == m_FieldArray.GetSize());
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m_FieldArray.RemoveAt(3);
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m_SeparatorCharArray.RemoveAt(3);
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m_FieldArray.RemoveAt(4);
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m_SeparatorCharArray.RemoveAt(4);
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}
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ASSERT(3 == m_FieldArray.GetSize());
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}
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// if the address is not a multicast address, the other params are ignored
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return S_OK;
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}
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BOOL
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SDP_CONNECTION::GetField(
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OUT SDP_FIELD *&Field,
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OUT BOOL &AddToArray
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)
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{
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// add in all cases by default
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AddToArray = TRUE;
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switch(m_LineState)
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{
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case CONNECTION_NETWORK_TYPE:
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{
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Field = &m_NetworkType;
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}
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break;
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case CONNECTION_ADDRESS_TYPE:
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{
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Field = &m_AddressType;
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}
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break;
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case CONNECTION_MCAST_ADDRESS:
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{
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m_StartAddress.SetMulticast(TRUE);
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Field = &m_StartAddress;
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}
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break;
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case CONNECTION_UCAST_ADDRESS:
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{
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m_StartAddress.SetMulticast(FALSE);
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Field = &m_StartAddress;
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}
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break;
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case CONNECTION_TTL:
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case CONNECTION_TTL_NUM_ADDRESSES:
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{
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Field = &m_Ttl;
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}
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break;
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case CONNECTION_NUM_ADDRESSES:
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{
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Field = &m_NumAddresses;
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}
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break;
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default:
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{
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SetLastError(m_ErrorCode);
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return FALSE;
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}
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break;
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};
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return TRUE;
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}
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