def _rowstatus_action(self, session, value):
if not session:
raise ValueError, "no session specified"
if self.rowstatus and self.indexoid:
vbl = Basetypes.VarBindList()
vbl.append(Basetypes.VarBind(self.rowstatus.OID+self.indexoid, self.rowstatus.syntaxobject(value)))
session.set(vbl)
def set(self, session=None, **attribs):
sess = session or self.session
vbl = Basetypes.VarBindList()
for colname, value in attribs.items():
col = self.columns[colname]
value = col.syntaxobject(value)
vbl.append(Basetypes.VarBind(col.OID + self.indexoid, value))
sess.set(vbl)
def createAndWait(self, session, *indexargs, **attribs):
vbl = self._create_vbl(*indexargs, **attribs)
vbl.append(
Basetypes.VarBind(
Basetypes.ObjectIdentifier(self.rowstatus.OID + self.indexoid),
self.rowstatus.syntaxobject(4))) # create and go
session.set(vbl)
return self
def get_values(self, *args):
sess = self.session
if sess and self.indexoid:
rv = []
vbl = Basetypes.VarBindList()
cols = map(lambda n: self.columns.get(n), args)
map(lambda o: vbl.append(Basetypes.VarBind(o.OID+self.indexoid)), cols)
return_vbl = sess.get_varbindlist(vbl)
return tuple(map(lambda vb: vb.value, return_vbl))
def _create_vbl(self, *indexargs, **attribs):
if not self.create:
raise ValueError, "Cannot create object of type "+self.__class__.__name__
self.__dict__["indexoid"] = self._make_index_oid(indexargs)
vbl = Basetypes.VarBindList()
for key, value in attribs.items():
colclass = self.columns[key]
value = colclass.syntaxobject(value)
vbl.append(Basetypes.VarBind(colclass.OID+self.indexoid, value))
return vbl
def _make_index_oid(self, indexargs):
assert len(indexargs) == len(self.index)
indexoid = Basetypes.ObjectIdentifier()
i = 0
for idx in indexargs[:-1]:
indexoid.extend(Basetypes.oid(self.index[i].syntaxobject(idx)))
i += 1
end = self.index[i].syntaxobject(indexargs[-1])
end.implied = self.index.implied
indexoid.extend(Basetypes.oid(end))
return indexoid
def _make_index_oid(self, indexargs):
assert len(indexargs) == len(self.index)
indexoid = Basetypes.ObjectIdentifier()
i = 0
for idx in indexargs[:-1]:
indexoid.extend(Basetypes.oid(self.index[i].syntaxobject(idx)))
i += 1
end = self.index[i].syntaxobject(indexargs[-1])
end.implied = self.index.implied
indexoid.extend(Basetypes.oid(end))
return indexoid
def _decode_a_varbindlist(vbl_tuple):
vbl = Basetypes.VarBindList()
for [oid, value] in vbl_tuple:
obj = _find_object(oid)
if obj is not None:
if value is not None:
if obj.syntaxobject:
value = obj.syntaxobject(value)
if obj.enumerations:
value.enumerations = obj.enumerations
vbl.append(Basetypes.VarBind(oid, value, obj))
else: # unknown varbind, deal with it later
vbl.append(Basetypes.VarBind(oid, value))
return vbl
def genNotifications(self):
self.fo.write("# notifications (traps) \n")
for notif in self.smimodule.get_notifications():
initdict = {"OID": repr(Basetypes.ObjectIdentifier(notif.OID))}
self.fo.write(genClass(notif, Objects.NotificationObject,
initdict))
self._genOIDItem(notif.OID, notif.name)
def decode_oid(length, message):
"""decode ASN.1 object ID"""
oid = []
# get the first subid
subid = ord(message[0])
oid.append(subid // 40)
oid.append(subid % 40)
index = 1
# loop through the rest
while index < length:
# get a subid
subid = ord(message[index])
if subid < 128:
oid.append(subid)
index = index + 1
else:
# construct subid from a number of octets
next = subid
subid = 0
while next >= 128:
# collect subid
subid = (subid << 7) + (next & 0x7F)
# take next octet
index = index + 1
next = ord(message[index])
# just for sure
if index > length:
return bad_integer
# append a subid to oid list
subid = (subid << 7) + next
oid.append(subid)
index = index + 1
# return objid
return Basetypes.OBJECT_IDENTIFIER(oid)
def refresh(self, session=None):
if (session or self.session) and self.indexoid:
sess = session or self.session
vbl = Basetypes.VarBindList()
map(lambda co: vbl.append(co.varbind.clear()), self.COLUMNS.values())
return_vbl = sess.get_varbindlist(vbl)
for vb in return_vbl:
self.COLUMNS[vb.Object.__name__].set_value(vb.value)
def genNodes(self):
self.fo.write("# nodes\n")
for node in self.smimodule.get_nodes(SMI.SMI_NODEKIND_NODE):
if node.name:
initdict = {}
initdict["name"] = repr(node.name)
initdict["OID"] = repr(Basetypes.ObjectIdentifier(node.OID))
self.fo.write(genClass(node, Objects.NodeObject, initdict))
self._genOIDItem(node.OID, node.name)
self.fo.write("\n")
def genColumns(self):
self.fo.write("# columns\n")
for col in self.smimodule.get_columns():
initdict = {}
initdict["syntaxobject"] = so = self._getSyntax(col)
if so.find("Enumeration") >= 0:
initdict["enumerations"] = col.syntax.enumerations
initdict["OID"] = repr(Basetypes.ObjectIdentifier(col.OID))
self.fo.write(genClass(col, Objects.ColumnObject, initdict))
self.fo.write("\n")
self._genOIDItem(col.OID, col.name)
def set(self, val, session=None):
sess = session or self.session
if self.access != SMI_ACCESS_READ_WRITE:
raise RuntimeError("Scalar is not writeable")
val = self.syntaxobject(val)
try:
sess.set_varbind(Basetypes.VarBind(self.OID, val))
except:
self.value = None
raise
else:
self.value = val
def get(self, session, indexoid=None):
sess = session or self.session
if indexoid:
self.__dict__["indexoid"] = self._make_index_oid(indexoid)
self.__dict__["COLUMNS"] = {} # clear cache with new dict
vbl = Basetypes.VarBindList()
VB = Basetypes.VarBind
map(lambda o: vbl.append(VB(o.OID+self.indexoid)), self.columns.values())
return_vbl = sess.get_varbindlist(vbl)
# insert in COLUMNS
for vb in return_vbl:
vbo = vb.Object
colobj = vbo(vb.value, vb.name[len(vbo.OID)+1:])
self.add_column(colobj)
return self
def genScalars(self):
self.fo.write("# scalars \n")
for scalar in self.smimodule.get_scalars():
if scalar.status not in \
(SMI.SMI_STATUS_DEPRECATED,
SMI.SMI_STATUS_CURRENT,
SMI.SMI_STATUS_MANDATORY):
continue # do not expose optional or obsolete objects
initdict = {}
initdict["syntaxobject"] = so = self._getSyntax(scalar)
if so.find("Enumeration") >= 0:
initdict["enumerations"] = scalar.syntax.enumerations
initdict["OID"] = repr(Basetypes.ObjectIdentifier(scalar.OID))
self.fo.write(genClass(scalar, Objects.ScalarObject, initdict))
self.fo.write("\n")
self._genOIDItem(scalar.OID, scalar.name)
def genGroups(self):
self.fo.write("# groups \n")
for group in self.smimodule.get_groups():
if group.status not in (SMI.SMI_STATUS_CURRENT,
SMI.SMI_STATUS_DEPRECATED,
SMI.SMI_STATUS_MANDATORY):
continue
initdict = {}
initdict["OID"] = repr(Basetypes.ObjectIdentifier(group.OID))
grouplist = []
for el in group.get_elements():
n = el.get_node()
grouplist.append(n.name)
initdict["group"] = "[%s]" % ", ".join(grouplist)
self.fo.write(genClass(group, Objects.GroupObject, initdict))
self._genOIDItem(group.OID, group.name)
def genRows(self):
self.fo.write("# rows \n")
for row in self.smimodule.get_rows():
if row.status not in (SMI.SMI_STATUS_DEPRECATED,
SMI.SMI_STATUS_CURRENT,
SMI.SMI_STATUS_MANDATORY):
continue
initdict = {}
columns = "{%s}" % ", ".join(["%r: %s" % (s, s) for s in self._get_colnames(row)])
initdict["columns"] = columns
initdict["index"] = self._genIndexObjects(row)
rowstatus = row.rowstatus
if rowstatus:
initdict["rowstatus"] = row.rowstatus.name
initdict["OID"] = repr(Basetypes.ObjectIdentifier(row.OID))
self.fo.write(genClass(row, Objects.RowObject, initdict))
self.fo.write("\n")
def decode_timeticks(length, message):
return Basetypes.TimeTicks(_decode_an_unsigned(length, message))
def decode_gauge32(length, message):
return Basetypes.Gauge32(_decode_an_unsigned(length, message))
def decode_endofmibview(length, message):
return Basetypes.endOfMibView()
def decode_nosuchinstance(length, message):
return Basetypes.noSuchInstance()
def decode_unsigned32(length, message):
return Basetypes.Unsigned32(_decode_an_unsigned(length, message))
def decode_v1traprequest(length, message):
rawpdu = decode_sequence(length, message)
assert len(rawpdu) == 6
return Basetypes.SNMPv1TrapPDU(rawpdu[0], rawpdu[1], rawpdu[2], rawpdu[3],
rawpdu[4], _decode_a_varbindlist(rawpdu[5]))
def _oid_(self):
new = Basetypes.ObjectIdentifier()
self[-1].implied = self.implied
for obj in self:
new.extend(Basetypes.oid(obj))
return new
def get_scalars(self, *args):
vbl = Basetypes.VarBindList()
for o in [self.scalars[on] for on in args]:
vbl.append(Basetypes.VarBind(o.OID+[0]))
return_vbl = self.session.get_varbindlist(vbl)
return tuple([vb.value for vb in return_vbl])
def decode_nosuchobject(length, message):
return Basetypes.noSuchObject()
def varbind(self):
return Basetypes.VarBind(self.OID, self.value, self.__class__)
def decode_ipv4(length, message):
"""decode ASN.1 IP address"""
assert length == 4
address = (ord(message[0])<<24) + (ord(message[1])<<16) + \
(ord(message[2])<<8) + ord(message[3])
return Basetypes.IpAddress(address)
def decode_counter64(length, message):
return Basetypes.Counter64(_decode_an_unsigned(length, message))
def _oid_(self):
new = Basetypes.ObjectIdentifier()
self[-1].implied = self.implied
for obj in self:
new.extend(Basetypes.oid(obj))
return new
def set(self, value, session=None, indexoid=None):
if indexoid:
self.set_index(indexoid)
sess = session or self.session
vb = Basetypes.VarBind(self.OID, self.syntaxobject(value))
return sess.set_varbind(vb)
def decode_boolean(length, message):
return Basetypes.Boolean(ord(message[0]))
def _add_vb(self, vb):
prefixlen = self.prefixlen
col = Basetypes.OID(vb.oid[prefixlen:prefixlen + 1])
row = Basetypes.OID(vb.oid[prefixlen + 1:])
#self.add_by_name(col, row, vb.value)
self.set(str(col), str(row), vb.value) # XXX
def _add_vb(self, vb):
prefixlen = len(self.OID)
col = Basetypes.OID(vb.oid[prefixlen:prefixlen+1])
row = Basetypes.OID(vb.oid[prefixlen+1:])
self.add_by_name(col, row, vb.value)
