int
TnmSetConfig(Tcl_Interp *interp, TnmConfig *config, ClientData object, int objc, Tcl_Obj *const objv[])
{
int i, option, code;
TnmTable *elemPtr;
Tcl_Obj *listPtr;
Tcl_Obj *objPtr;
if (objc % 2) {
Tcl_WrongNumArgs(interp, 2, objv, "?option value? ?option value? ...");
return TCL_ERROR;
}
/*
* First scan through the list of options to make sure that
* we don't run on an unknown option later when we have
* already modified the object.
*/
for (i = 2; i < objc; i += 2) {
option = TnmGetTableKeyFromObj(interp, config->optionTable,
objv[i], "option");
if (option < 0) {
return TCL_ERROR;
}
}
/*
* Now call the function to actually modify the object. Note,
* this version does not rollback changes so an object might
* end up in a half modified state.
*/
for (i = 2; i < objc; i += 2) {
option = TnmGetTableKeyFromObj(interp, config->optionTable,
objv[i], "option");
code = (config->setOption)(interp, object, option, objv[i+1]);
if (code != TCL_OK) {
return TCL_ERROR;
}
}
/*
* Create a new list which contains all the configuration
* options and their current values.
*/
listPtr = Tcl_GetObjResult(interp);
for (elemPtr = config->optionTable; elemPtr->value; elemPtr++) {
objPtr = (config->getOption)(interp, object, (int) elemPtr->key);
if (objPtr) {
Tcl_ListObjAppendElement(interp, listPtr,
Tcl_NewStringObj(elemPtr->value, -1));
Tcl_ListObjAppendElement(interp, listPtr, objPtr);
}
}
return TCL_OK;
}
int
TnmGetConfig(Tcl_Interp *interp, TnmConfig *config, ClientData object, int objc, Tcl_Obj *const objv[])
{
int option;
Tcl_Obj *objPtr;
if (objc != 3) {
Tcl_WrongNumArgs(interp, 2, objv, "option");
return TCL_ERROR;
}
option = TnmGetTableKeyFromObj(interp, config->optionTable,
objv[2], "option");
if (option < 0) {
return TCL_ERROR;
}
objPtr = (config->getOption)(interp, object, option);
if (! objPtr) {
Tcl_ResetResult(interp);
Tcl_AppendResult(interp, "invalid option \"",
Tcl_GetStringFromObj(objv[2], NULL), "\"",
(char *) NULL);
return TCL_ERROR;
}
Tcl_SetObjResult(interp, objPtr);
return TCL_OK;
}
Tcl_Obj*
TnmSnmpNorm(Tcl_Interp *interp, Tcl_Obj *objPtr, int flags)
{
int i, code, objc;
Tcl_Obj **objv;
Tcl_Obj *vbListPtr = NULL;
/*
* The following Tcl_Objs are allocated once and reused whenever
* we need to expand a varbind list containing object identifiers
* without any value or type elements.
*/
static Tcl_Obj *nullType = NULL;
static Tcl_Obj *zeroValue = NULL;
static Tcl_Obj *nullValue = NULL;
if (! nullType) {
nullType = Tcl_NewStringObj("NULL", 4);
Tcl_IncrRefCount(nullType);
}
if (! zeroValue) {
zeroValue = Tcl_NewIntObj(0);
Tcl_IncrRefCount(zeroValue);
}
if (! nullValue) {
nullValue = Tcl_NewStringObj(NULL, 0);
Tcl_IncrRefCount(nullValue);
}
/*
* Split the varbind list into a list of varbinds. Create a
* new Tcl list to hold the expanded varbind list.
*/
code = Tcl_ListObjGetElements(interp, objPtr, &objc, &objv);
if (code != TCL_OK) {
goto errorExit;
}
vbListPtr = Tcl_NewListObj(0, NULL);
for (i = 0; i < objc; i++) {
int vbc, type;
Tcl_Obj **vbv, *vbPtr;
TnmOid* oidPtr;
Tcl_Obj *oidObjPtr, *typeObjPtr, *valueObjPtr;
TnmMibNode *nodePtr = NULL;
/*
* Create a new varbind element in the expanded result list
* for each varbind.
*/
vbPtr = Tcl_NewListObj(0, NULL);
Tcl_ListObjAppendElement(interp, vbListPtr, vbPtr);
code = Tcl_ListObjGetElements(interp, objv[i], &vbc, &vbv);
if (code != TCL_OK) {
goto errorExit;
}
/*
* Get the object identifier value from the first list
* element. Check the number of list elements and assign
* them to the oid, type and value variables.
*/
switch (vbc) {
case 1:
oidObjPtr = vbv[0];
typeObjPtr = nullType;
valueObjPtr = nullValue;
break;
case 2:
oidObjPtr = vbv[0];
typeObjPtr = NULL;
valueObjPtr = vbv[1];
break;
case 3:
oidObjPtr = vbv[0];
typeObjPtr = vbv[1];
valueObjPtr = vbv[2];
break;
default: {
char msg[80];
sprintf(msg, "illegal number of elements in varbind %d", i);
Tcl_ResetResult(interp);
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
msg, (char *) NULL);
goto errorExit;
}
}
/*
* Check/resolve the object identifier and assign it to the
* result list. Make sure to make a deep copy if the object
* identifier value is shared since the string representation
* must be invalidated to ensure that hexadecimal
* sub-identifier are converted into decimal sub-identifier.
*/
oidPtr = TnmGetOidFromObj(interp, oidObjPtr);
if (! oidPtr) {
goto errorExit;
}
if (Tcl_IsShared(oidObjPtr)) {
oidObjPtr = Tcl_DuplicateObj(oidObjPtr);
}
TnmOidObjSetRep(oidObjPtr, TNM_OID_AS_OID);
Tcl_InvalidateStringRep(oidObjPtr);
Tcl_ListObjAppendElement(interp, vbPtr, oidObjPtr);
/*
* Lookup the type in the MIB if there is no type given in the
* varbind element.
*/
if (! typeObjPtr) {
int syntax;
nodePtr = TnmMibNodeFromOid(oidPtr, NULL);
if (! nodePtr) {
char msg[80];
sprintf(msg, "failed to lookup the type for varbind %d", i);
Tcl_ResetResult(interp);
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
msg, (char *) NULL);
goto errorExit;
}
syntax = (nodePtr->typePtr && nodePtr->typePtr->name)
? nodePtr->typePtr->syntax : nodePtr->syntax;
typeObjPtr = Tcl_NewStringObj(
TnmGetTableValue(tnmSnmpTypeTable, (unsigned) syntax), -1);
}
type = TnmGetTableKeyFromObj(NULL, tnmSnmpTypeTable,
typeObjPtr, NULL);
if (type == -1) {
type = TnmGetTableKeyFromObj(NULL, tnmSnmpExceptionTable,
typeObjPtr, NULL);
if (type == -1) {
char msg[80];
invalidType:
sprintf(msg, "illegal type in varbind %d", i);
Tcl_ResetResult(interp);
Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
msg, (char *) NULL);
goto errorExit;
}
}
Tcl_ListObjAppendElement(interp, vbPtr, typeObjPtr);
/*
* Check the value and perform any conversions needed to
* convert the value into the base type representation.
*/
switch (type) {
case ASN1_INTEGER: {
long longValue;
code = Tcl_GetLongFromObj(interp, valueObjPtr, &longValue);
if (code != TCL_OK) {
if (! nodePtr) {
nodePtr = TnmMibNodeFromOid(oidPtr, NULL);
}
if (nodePtr) {
Tcl_Obj *value;
value = TnmMibScanValue(nodePtr->typePtr, nodePtr->syntax,
valueObjPtr);
if (! value) {
goto errorExit;
}
Tcl_ResetResult(interp);
code = Tcl_GetLongFromObj(interp, value, &longValue);
}
if (code != TCL_OK) {
goto errorExit;
}
valueObjPtr = Tcl_NewLongObj(longValue);
}
if (flags & TNM_SNMP_NORM_INT) {
if (! nodePtr) {
nodePtr = TnmMibNodeFromOid(oidPtr, NULL);
}
if (nodePtr && nodePtr->typePtr) {
Tcl_Obj *newPtr;
newPtr = TnmMibFormatValue(nodePtr->typePtr,
nodePtr->syntax,
valueObjPtr);
if (newPtr) {
valueObjPtr = newPtr;
}
}
}
break;
}
case ASN1_COUNTER32:
case ASN1_GAUGE32:
case ASN1_TIMETICKS: {
TnmUnsigned32 u;
code = TnmGetUnsigned32FromObj(interp, valueObjPtr, &u);
if (code != TCL_OK) {
goto errorExit;
}
break;
}
case ASN1_COUNTER64: {
TnmUnsigned64 u;
code = TnmGetUnsigned64FromObj(interp, valueObjPtr, &u);
if (code != TCL_OK) {
goto errorExit;
}
break;
}
case ASN1_IPADDRESS: {
if (TnmGetIpAddressFromObj(interp, valueObjPtr) == NULL) {
goto errorExit;
}
Tcl_InvalidateStringRep(valueObjPtr);
break;
}
case ASN1_OBJECT_IDENTIFIER:
if (! TnmGetOidFromObj(interp, valueObjPtr)) {
goto errorExit;
}
if (Tcl_IsShared(valueObjPtr)) {
valueObjPtr = Tcl_DuplicateObj(valueObjPtr);
}
if (flags & TNM_SNMP_NORM_OID) {
TnmOidObjSetRep(valueObjPtr, TNM_OID_AS_NAME);
} else {
TnmOidObjSetRep(valueObjPtr, TNM_OID_AS_OID);
}
Tcl_InvalidateStringRep(valueObjPtr);
break;
case ASN1_OCTET_STRING: {
int len;
if (! nodePtr) {
nodePtr = TnmMibNodeFromOid(oidPtr, NULL);
}
if (nodePtr) {
Tcl_Obj *scan;
scan = TnmMibScanValue(nodePtr->typePtr, nodePtr->syntax,
valueObjPtr);
if (scan) {
valueObjPtr = scan;
}
}
if (TnmGetOctetStringFromObj(interp, valueObjPtr, &len) == NULL) {
goto errorExit;
}
Tcl_InvalidateStringRep(valueObjPtr);
break;
}
case ASN1_NULL:
valueObjPtr = nullValue;
break;
default:
goto invalidType;
}
Tcl_ListObjAppendElement(interp, vbPtr, valueObjPtr);
}
return vbListPtr;
errorExit:
if (vbListPtr) {
Tcl_DecrRefCount(vbListPtr);
}
return NULL;
}
