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#include "precomp.h"
DEBUG_FILEZONE(ZONE_T120_UTILITY); /*
* objkey.cpp * * Copyright (c) 1995 by DataBeam Corporation, Lexington, KY * * Abstract: * This is the implementation file for the class CObjectKeyContainer. This class * manages the data associated with an Object Key. Object Key's are used * to identify a particular application protocol, whether it is standard or * non-standard. When used to identify a standard protocol, the Object Key * takes the form of an Object ID which is a series of non-negative * integers. This type of Object Key is maintained internally through the * use of a Memory object. When used to identify a non-standard * protocol, the Object Key takes the form of an H221 non-standard ID which * is an octet string of no fewer than four octets and no more than 255 * octets. In this case the Object Key is maintained internally by using a * Rogue Wave string object. * * Protected Instance Variables: * m_InternalObjectKey * Structure used to hold the object key data internally. * m_ObjectKeyPDU * Storage for the "PDU" form of the object key. * m_fValidObjectKeyPDU * Flag indicating that memory has been allocated to hold the internal * "PDU" object key. * m_cbDataSize * Variable holding the size of the memory which will be required to * hold any data referenced by the "API" GCCObjectKey structure. * * Caveats: * None. * * Author: * jbo */ #include "objkey.h"
/*
* CObjectKeyContainer() * * Public Function Description: * This constructor is used to create an CObjectKeyContainer object from * an "API" GCCObjectKey. */ CObjectKeyContainer::CObjectKeyContainer(PGCCObjectKey object_key, PGCCError pRetCode) : CRefCount(MAKE_STAMP_ID('O','b','j','K')), m_fValidObjectKeyPDU(FALSE), m_cbDataSize(0) { GCCError rc = GCC_NO_ERROR; BOOL object_key_is_valid = TRUE; UINT object_id_size;
m_InternalObjectKey.object_id_key = NULL; m_InternalObjectKey.poszNonStandardIDKey = NULL;
/*
* Check to see what type of key is contained in the object key. * Object ID keys will be stored internally in a Memory object and * non-standard ID keys will be stored internally as Octet Strings. */ if (object_key->key_type == GCC_OBJECT_KEY) { /*
* The key is of type object ID. Perform a parameter check for a legal * object ID by examining the first two arcs in the object ID. */ if (object_key->object_id.long_string_length >= MINIMUM_OBJECT_ID_ARCS) { object_key_is_valid = ValidateObjectIdValues( object_key->object_id.long_string[0], object_key->object_id.long_string[1]); } else { object_key_is_valid = FALSE; }
if (object_key_is_valid) { /*
* The key is of type Object ID. Determine the amount of memory * required to hold the Object ID and allocate it. Copy the Object * ID values from the object key passed in into the internal * structure. */ m_InternalObjectKey.object_id_length = object_key->object_id.long_string_length; object_id_size = m_InternalObjectKey.object_id_length * sizeof(UINT); DBG_SAVE_FILE_LINE m_InternalObjectKey.object_id_key = new BYTE[object_id_size]; if (m_InternalObjectKey.object_id_key != NULL) { ::CopyMemory(m_InternalObjectKey.object_id_key, object_key->object_id.long_string, object_id_size); } else { ERROR_OUT(("CObjectKeyContainer::CObjectKeyContainer: Error allocating memory")); rc = GCC_ALLOCATION_FAILURE; } } else { ERROR_OUT(("CObjectKeyContainer::CObjectKeyContainer: Object ID has illegal values.")); rc = GCC_BAD_OBJECT_KEY; } } else { /*
* The key is non-standard. Check to make sure the length of the * non-standard ID is within the allowable limits. */ if ((object_key->h221_non_standard_id.length >= MINIMUM_NON_STANDARD_ID_LENGTH) && (object_key->h221_non_standard_id.length <= MAXIMUM_NON_STANDARD_ID_LENGTH)) { /*
* The key is of type H221 non-standard ID. Create a new Rogue * Wave string container to hold the non-standard data. */ if (NULL == (m_InternalObjectKey.poszNonStandardIDKey = ::My_strdupO2( object_key->h221_non_standard_id.value, object_key->h221_non_standard_id.length))) { ERROR_OUT(("CObjectKeyContainer::CObjectKeyContainer: Error creating non standard id key")); rc = GCC_ALLOCATION_FAILURE; } } else { ERROR_OUT(("CObjectKeyContainer::CObjectKeyContainer: Non standard ID is outside legal range")); rc = GCC_BAD_OBJECT_KEY; } }
*pRetCode = rc; }
/*
* CObjectKeyContainer() * * Public Function Description: * This constructor is used to create an CObjectKeyContainer object from * a "PDU" Key. */ CObjectKeyContainer::CObjectKeyContainer(PKey object_key, PGCCError pRetCode) : CRefCount(MAKE_STAMP_ID('O','b','j','K')), m_fValidObjectKeyPDU(FALSE), m_cbDataSize(0) { GCCError rc = GCC_NO_ERROR; PSetOfObjectID object_id_set_ptr; UINT *object_id_ptr; UINT object_id_size = 0; Int i = 0;
m_InternalObjectKey.object_id_key = NULL; m_InternalObjectKey.object_id_length = 0; m_InternalObjectKey.poszNonStandardIDKey = NULL;
/*
* Check to see what type of key is contained in the object key. * Object ID keys will be stored internally in a Memory object and * non-standard ID keys will be stored internally in Rogue Wave string * containers. */ if (object_key->choice == OBJECT_CHOSEN) { /*
* Retrieve the first object ID pointer from the "PDU" structure in * preparation for determining how much memory will be needed to hold * the object ID values. */ object_id_set_ptr = object_key->u.object;
/*
* Loop through the ObjectID structure, adding up the size of the * string. */ while (object_id_set_ptr != NULL) { m_InternalObjectKey.object_id_length++; object_id_set_ptr = object_id_set_ptr->next; }
object_id_size = m_InternalObjectKey.object_id_length * sizeof(UINT);
/*
* Allocate the memory to be used to hold the object ID values. */ DBG_SAVE_FILE_LINE m_InternalObjectKey.object_id_key = new BYTE[object_id_size]; if (m_InternalObjectKey.object_id_key != NULL) { object_id_ptr = (UINT *) m_InternalObjectKey.object_id_key;
/*
* Again retrieve the first object ID pointer from the "PDU" * structure in order to get the values out for saving. */ object_id_set_ptr = object_key->u.object;
/*
* Loop through the ObjectID structure, getting each object ID * value and saving it in the allocated memory. */ while (object_id_set_ptr != NULL) { object_id_ptr[i++] = object_id_set_ptr->value; object_id_set_ptr = object_id_set_ptr->next; } } else { ERROR_OUT(("CObjectKeyContainer::CObjectKeyContainer: Error allocating memory.")); rc = GCC_ALLOCATION_FAILURE; } } else { /*
* The key is of type H221 non-standard ID so create a new Rogue Wave * string container to hold the data. */ if (NULL == (m_InternalObjectKey.poszNonStandardIDKey = ::My_strdupO2( object_key->u.h221_non_standard.value, object_key->u.h221_non_standard.length))) { ERROR_OUT(("CObjectKeyContainer::CObjectKeyContainer: Error creating non standard id key")); rc = GCC_ALLOCATION_FAILURE; } }
*pRetCode = rc; }
/*
* CObjectKeyContainer() * * Public Function Description: * This copy constructor is used to create a new CObjectKeyContainer object from * another CObjectKeyContainer object. */ CObjectKeyContainer::CObjectKeyContainer(CObjectKeyContainer *object_key, PGCCError pRetCode) : CRefCount(MAKE_STAMP_ID('O','b','j','K')), m_fValidObjectKeyPDU(FALSE), m_cbDataSize(0) { GCCError rc = GCC_NO_ERROR; UINT object_id_size;
m_InternalObjectKey.object_id_key = NULL; m_InternalObjectKey.poszNonStandardIDKey = NULL;
/*
* If an object ID "key" exists for the CObjectKeyContainer to be copied, * allocate memory to hold the object ID "key" information internally. * Check to make sure construction of the object is successful. */ if (object_key->m_InternalObjectKey.object_id_key != NULL) { /*
* The key is of type Object ID. */ m_InternalObjectKey.object_id_length = object_key->m_InternalObjectKey.object_id_length; object_id_size = m_InternalObjectKey.object_id_length * sizeof(UINT);
DBG_SAVE_FILE_LINE m_InternalObjectKey.object_id_key = new BYTE[object_id_size]; if (m_InternalObjectKey.object_id_key != NULL) { ::CopyMemory(m_InternalObjectKey.object_id_key, object_key->m_InternalObjectKey.object_id_key, object_id_size); } else { ERROR_OUT(("CObjectKeyContainer::CObjectKeyContainer: Error allocating memory")); rc = GCC_ALLOCATION_FAILURE; } } else if (object_key->m_InternalObjectKey.poszNonStandardIDKey != NULL) { /*
* If a non-standard ID "key" exists for the CObjectKeyContainer to be copied, * create a new Rogue Wave string to hold the non-standard "key" * information internally. Check to make sure construction of the * object is successful. */ if (NULL == (m_InternalObjectKey.poszNonStandardIDKey = ::My_strdupO( object_key->m_InternalObjectKey.poszNonStandardIDKey))) { ERROR_OUT(("CObjectKeyContainer::CObjectKeyContainer: Error creating new non standard id key")); rc = GCC_ALLOCATION_FAILURE; } } else { /*
* At least one of the internal pointers for the passed in object key * must be valid. */ ERROR_OUT(("CObjectKeyContainer::CObjectKeyContainer: Bad input parameters")); rc = GCC_BAD_OBJECT_KEY; }
*pRetCode = rc; }
/*
* ~CObjectKeyContainer() * * Public Function Description * The CObjectKeyContainer destructor is responsible for freeing any memory * allocated to hold the object key data. * */ CObjectKeyContainer::~CObjectKeyContainer(void) { /*
* If "PDU" data has been allocated for this object, free it now. */ if (m_fValidObjectKeyPDU) { FreeObjectKeyDataPDU(); }
/*
* Delete any object key data held internally. */ delete m_InternalObjectKey.object_id_key; delete m_InternalObjectKey.poszNonStandardIDKey; }
/*
* LockObjectKeyData () * * Public Function Description: * This routine locks the object key data and determines the amount of * memory referenced by the "API" object key data structure. */ UINT CObjectKeyContainer::LockObjectKeyData(void) { /*
* If this is the first time this routine is called, determine the size of * the memory required to hold the data referenced by the object key * structure. Otherwise, just increment the lock count. */ if (Lock() == 1) { /*
* Determine the amount of space required to hold the data referenced * by the "API" Object Key structure. */ if (m_InternalObjectKey.object_id_key != NULL) { /*
* Since the object ID is just a series of "longs" without a NULL * terminator, we do not want to include a NULL terminator when * determining the length. */ m_cbDataSize = m_InternalObjectKey.object_id_length * sizeof(UINT); } else { /*
* The data referenced by the non-standard object key is just the * length of the octet string. */ m_cbDataSize = m_InternalObjectKey.poszNonStandardIDKey->length; }
/*
* Force the size to be on a four-byte boundary. */ m_cbDataSize = ROUNDTOBOUNDARY(m_cbDataSize); }
return m_cbDataSize; }
/*
* GetGCCObjectKeyData () * * Public Function Description: * This routine retrieves object key data in the form of an "API" * GCCObjectKey. This routine is called after "locking" the object * key data. */ UINT CObjectKeyContainer::GetGCCObjectKeyData( PGCCObjectKey object_key, LPBYTE memory) { UINT cbDataSizeToRet = 0; UINT *object_id_ptr;
/*
* If the object key data has been locked, fill in the output structure and * the data referenced by the structure. Otherwise, report that the object * key has yet to be locked into the "API" form. */ if (GetLockCount() > 0) { /*
* Fill in the output length parameter which indicates how much data * referenced outside the structure will be written. */ cbDataSizeToRet = m_cbDataSize;
if (m_InternalObjectKey.object_id_key != NULL) { /*
* The object key is a standard type. Set the object key type * and the length of the long string. The length set here does * not include a NULL terminator. */ object_key->key_type = GCC_OBJECT_KEY; object_key->object_id.long_string_length = (USHORT) m_InternalObjectKey.object_id_length;
/*
* Set the offset for the long string equal to the memory pointer * passed in since it will be the first data referenced by the * object key structure. */ object_key->object_id.long_string = (ULONG *) memory;
/*
* Now retrieve the memory pointer and copy the long string data * from the internal memory object. */ object_id_ptr = (UINT *) m_InternalObjectKey.object_id_key;
::CopyMemory(memory, object_id_ptr, m_InternalObjectKey.object_id_length * sizeof (UINT)); } else if (m_InternalObjectKey.poszNonStandardIDKey != NULL) { /*
* The object key is a non-standard type. Set the object key * type and the length of the octet string. */ object_key->key_type = GCC_H221_NONSTANDARD_KEY; object_key->h221_non_standard_id.length = m_InternalObjectKey.poszNonStandardIDKey->length;
/*
* Set the offset for the octet string equal to the memory pointer * passed in since it will be the first data referenced by the * object key structure. */ object_key->h221_non_standard_id.value = memory;
/*
* Now copy the octet string data from the internal Rogue Wave * string into the object key structure held in memory. */ ::CopyMemory(memory, m_InternalObjectKey.poszNonStandardIDKey->value, m_InternalObjectKey.poszNonStandardIDKey->length); } else { ERROR_OUT(("CObjectKeyContainer::LockObjectKeyData: Error, no valid internal data")); } } else { object_key = NULL; ERROR_OUT(("CObjectKeyContainer::GetGCCObjectKeyData: Error Data Not Locked")); }
return cbDataSizeToRet; }
/*
* UnLockObjectKeyData () * * Public Function Description: * This routine decrements the lock count and frees the memory associated * with the "API" object key once the lock count reaches zero. */ void CObjectKeyContainer::UnLockObjectKeyData(void) { Unlock(); }
/*
* GetObjectKeyDataPDU () * * Public Function Description: * This routine converts the object key from it's internal form of an * OBJECT_KEY structure into the "PDU" form which can be passed in * to the ASN.1 encoder. A pointer to a "PDU" "Key" structure is * returned. */ GCCError CObjectKeyContainer::GetObjectKeyDataPDU(PKey object_key) { PSetOfObjectID new_object_id_ptr; PSetOfObjectID old_object_id_ptr; UINT *object_id_string; GCCError rc = GCC_NO_ERROR; UINT i;
/*
* Set the loop pointer to NULL to avoid a compiler warning. */ old_object_id_ptr = NULL;
/*
* If this is the first time that PDU data has been requested then we must * fill in the internal PDU structure and copy it into the structure pointed * to by the output parameter. On subsequent calls to "GetPDU" we can just * copy the internal PDU structure into the structure pointed to by the * output parameter. */ if (m_fValidObjectKeyPDU == FALSE) { m_fValidObjectKeyPDU = TRUE;
/*
* Fill in the "PDU" object key after checking to see what form of * key exists in the internal structure. */ if (m_InternalObjectKey.object_id_key != NULL) { /*
* The key is an object ID so set the choice accordingly and * initialize the PDU object pointer to NULL. Get the pointer to * the internal list of object key values stored in the memory * object. */ m_ObjectKeyPDU.choice = OBJECT_CHOSEN; m_ObjectKeyPDU.u.object = NULL;
object_id_string = (UINT *) m_InternalObjectKey.object_id_key;
/*
* The "PDU" structure "ObjectID" is a linked list of unsigned * longs. Retrieve the Object ID values from the internal memory * object and fill in the "ObjectID" structure. */ for (i=0; i<m_InternalObjectKey.object_id_length; i++) { DBG_SAVE_FILE_LINE new_object_id_ptr = new SetOfObjectID; if (new_object_id_ptr != NULL) { /*
* The first time through the new pointer is saved in the * PDU structure. On subsequent iterations, the previous * "next" pointer is set equal to the new pointer. */ if (m_ObjectKeyPDU.u.object == NULL) { m_ObjectKeyPDU.u.object = new_object_id_ptr; } else { old_object_id_ptr->next = new_object_id_ptr; }
old_object_id_ptr = new_object_id_ptr;
/*
* Save the actual Object ID value. */ new_object_id_ptr->value = object_id_string[i]; new_object_id_ptr->next = NULL; } else { ERROR_OUT(("CObjectKeyContainer::GetObjectKeyDataPDU: creating new ObjectID")); rc = GCC_ALLOCATION_FAILURE; break; } } } else if (m_InternalObjectKey.poszNonStandardIDKey != NULL) { /*
* The key is a non-standard ID so convert the internal Rogue Wave * string into the "PDU" non-standard ID. */ m_ObjectKeyPDU.choice = H221_NON_STANDARD_CHOSEN; m_ObjectKeyPDU.u.h221_non_standard.length = m_InternalObjectKey.poszNonStandardIDKey->length;
::CopyMemory(m_ObjectKeyPDU.u.h221_non_standard.value, m_InternalObjectKey.poszNonStandardIDKey->value, m_InternalObjectKey.poszNonStandardIDKey->length); } else { /*
* The constructors make sure that at least one of the internal * pointers is valid so this should never be encountered. */ ERROR_OUT(("CObjectKeyContainer::GetObjectKeyDataPDU: No valid m_InternalObjectKey")); rc = GCC_ALLOCATION_FAILURE; } }
/*
* Copy the internal PDU structure into the structure pointed to by the * output parameter. */ *object_key = m_ObjectKeyPDU;
return rc; }
/*
* FreeObjectKeyDataPDU () * * Public Function Description: * This routine is used to free the object key data held internally in * the "PDU" form of a "Key". */ void CObjectKeyContainer::FreeObjectKeyDataPDU(void) { PSetOfObjectID set_of_object_id; PSetOfObjectID next_set_of_object_id;
if (m_fValidObjectKeyPDU) { /*
* Set the flag indicating that PDU object key data is no longer * allocated. */ m_fValidObjectKeyPDU = FALSE;
if (m_ObjectKeyPDU.choice == OBJECT_CHOSEN) { for (set_of_object_id = m_ObjectKeyPDU.u.object; set_of_object_id != NULL; set_of_object_id = next_set_of_object_id) { next_set_of_object_id = set_of_object_id->next; delete set_of_object_id; } } } }
/*
* operator== () * * Public Function Description: * This routine is used to compare two CObjectKeyContainer objects to determine * if they are equal in value. */ BOOL operator==(const CObjectKeyContainer& object_key_1, const CObjectKeyContainer& object_key_2) { UINT *object_id_1, *object_id_2; UINT i; BOOL rc = FALSE; /*
* Check to make sure that both the object ID key and the non-standard * ID key are equal. */ if ((object_key_1.m_InternalObjectKey.object_id_key != NULL) && (object_key_2.m_InternalObjectKey.object_id_key != NULL)) { if (object_key_1.m_InternalObjectKey.object_id_length == object_key_2.m_InternalObjectKey.object_id_length) { object_id_1 = (UINT *) object_key_1.m_InternalObjectKey.object_id_key; object_id_2 = (UINT *) object_key_2.m_InternalObjectKey.object_id_key;
/*
* Compare each Object ID value to make sure they are equal. */ rc = TRUE; for (i=0; i<object_key_1.m_InternalObjectKey.object_id_length; i++) { if (object_id_1[i] != object_id_2[i]) { rc = FALSE; break; } } } } else if (0 == My_strcmpO(object_key_1.m_InternalObjectKey.poszNonStandardIDKey, object_key_2.m_InternalObjectKey.poszNonStandardIDKey)) { rc = TRUE; }
return rc; }
/*
* BOOL ValidateObjectIdValues ( UINT first_arc, * UINT second_arc); * * Private member function of CObjectKeyContainer. * * Function Description: * This routine is used to determine whether or not the values for the * object ID component of the object key are valid. * * Formal Parameters: * first_arc (i) The first integer value of the Object ID. * second_arc (i) The second integer value of the Object ID. * * Return Value: * TRUE - The first two arcs of the Object ID are valid. * FALSE - The first two arcs of the Object ID are not * valid. * * Side Effects: * None. * * Caveats: * None. */ BOOL CObjectKeyContainer::ValidateObjectIdValues(UINT first_arc, UINT second_arc) { BOOL rc = FALSE;
if (first_arc == ITUT_IDENTIFIER) { if (0 <= second_arc && second_arc <= 4) { rc = TRUE; } } else if (first_arc == ISO_IDENTIFIER) { if ((second_arc == 0L) || (second_arc == 2L) || (second_arc == 3L)) { rc = TRUE; } } else if (first_arc == JOINT_ISO_ITUT_IDENTIFIER) { /*
* Referring to ISO/IEC 8824-1 : 1994 (E) Annex B: * Join assignment of OBJECT IDENTIFIER component values are assigned * and agreed from time to time by ISO and ITU-T to identify areas of * joint ISO/ITU-T standardization activity, in accordance with the * procedures of .... ANSI. So we just let them all through for now. */ rc = TRUE; } else { ERROR_OUT(("ObjectKeyData::ValidateObjectIdValues: ObjectID is invalid")); }
return rc; }
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