def _rr_line(self, section):
"""Process one line from the text format answer, authority, or
additional data sections.
"""
deleting = None
# Name
token = self.tok.get(want_leading = True)
if not token.is_whitespace():
self.last_name = mname.from_text(token.value, None)
name = self.last_name
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
# TTL
try:
ttl = int(token.value, 0)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
except exception.SyntaxError:
raise exception.SyntaxError
except:
ttl = 0
# Class
try:
rdclass = rdataclass.from_text(token.value)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
if rdclass == rdataclass.ANY or rdclass == rdataclass.NONE:
deleting = rdclass
rdclass = self.zone_rdclass
except exception.SyntaxError:
raise exception.SyntaxError
except:
rdclass = rdataclass.IN
# Type
rdtype = rdatatype.from_text(token.value)
token = self.tok.get()
if not token.is_eol_or_eof():
self.tok.unget(token)
rd = rdata.from_text(rdclass, rdtype, self.tok, None)
covers = rd.covers()
else:
rd = None
covers = rdatatype.NONE
rrset = self.message.find_rrset(section, name,
rdclass, rdtype, covers,
deleting, True, self.updating)
if not rd is None:
rrset.add(rd, ttl)
def _rr_line(self, section):
"""Process one line from the text format answer, authority, or
additional data sections.
"""
deleting = None
# Name
token = self.tok.get(want_leading=True)
if not token.is_whitespace():
self.last_name = mname.from_text(token.value, None)
name = self.last_name
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
# TTL
try:
ttl = int(token.value, 0)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
except exception.SyntaxError:
raise exception.SyntaxError
except:
ttl = 0
# Class
try:
rdclass = rdataclass.from_text(token.value)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
if rdclass == rdataclass.ANY or rdclass == rdataclass.NONE:
deleting = rdclass
rdclass = self.zone_rdclass
except exception.SyntaxError:
raise exception.SyntaxError
except:
rdclass = rdataclass.IN
# Type
rdtype = rdatatype.from_text(token.value)
token = self.tok.get()
if not token.is_eol_or_eof():
self.tok.unget(token)
rd = rdata.from_text(rdclass, rdtype, self.tok, None)
covers = rd.covers()
else:
rd = None
covers = rdatatype.NONE
rrset = self.message.find_rrset(section, name, rdclass, rdtype, covers,
deleting, True, self.updating)
if not rd is None:
rrset.add(rd, ttl)
def from_text_list(rdclass, rdtype, ttl, text_rdatas):
"""Create an rdataset with the specified class, type, and TTL, and with
the specified list of rdatas in text format.
@rtype: rdataset.Rdataset object
"""
if isinstance(rdclass, (str, unicode)):
rdclass = rdataclass.from_text(rdclass)
if isinstance(rdtype, (str, unicode)):
rdtype = rdatatype.from_text(rdtype)
r = Rdataset(rdclass, rdtype)
r.update_ttl(ttl)
for t in text_rdatas:
rd = rdata.from_text(r.rdclass, r.rdtype, t)
r.add(rd)
return r
def delete(self, name, *args):
"""Delete records. The first argument is always a name. The other
arguments can be:
- I{nothing}
- rdataset...
- rdata...
- rdtype, [string...]"""
if isinstance(name, (str, unicode)):
name = name.from_text(name, None)
if len(args) == 0:
rrset = self.find_rrset(self.authority, name, rdataclass.ANY,
rdatatype.ANY, rdatatype.NONE,
rdatatype.ANY, True, True)
elif isinstance(args[0], rdataset.Rdataset):
for rds in args:
for rd in rds:
self._add_rr(name, 0, rd, rdataclass.NONE)
else:
args = list(args)
if isinstance(args[0], rdata.Rdata):
for rd in args:
self._add_rr(name, 0, rd, rdataclass.NONE)
else:
rdtype = args.pop(0)
if isinstance(rdtype, (str, unicode)):
rdtype = rdatatype.from_text(rdtype)
if len(args) == 0:
rrset = self.find_rrset(self.authority, name,
self.zone_rdclass, rdtype,
rdatatype.NONE,
rdataclass.ANY,
True, True)
else:
for s in args:
rd = rdata.from_text(self.zone_rdclass, rdtype, s,
self.origin)
self._add_rr(name, 0, rd, rdataclass.NONE)
def delete(self, name, *args):
"""Delete records. The first argument is always a name. The other
arguments can be:
- I{nothing}
- rdataset...
- rdata...
- rdtype, [string...]"""
if isinstance(name, (str, unicode)):
name = name.from_text(name, None)
if len(args) == 0:
rrset = self.find_rrset(self.authority, name, rdataclass.ANY,
rdatatype.ANY, rdatatype.NONE,
rdatatype.ANY, True, True)
elif isinstance(args[0], rdataset.Rdataset):
for rds in args:
for rd in rds:
self._add_rr(name, 0, rd, rdataclass.NONE)
else:
args = list(args)
if isinstance(args[0], rdata.Rdata):
for rd in args:
self._add_rr(name, 0, rd, rdataclass.NONE)
else:
rdtype = args.pop(0)
if isinstance(rdtype, (str, unicode)):
rdtype = rdatatype.from_text(rdtype)
if len(args) == 0:
rrset = self.find_rrset(self.authority, name,
self.zone_rdclass, rdtype,
rdatatype.NONE, rdataclass.ANY,
True, True)
else:
for s in args:
rd = rdata.from_text(self.zone_rdclass, rdtype, s,
self.origin)
self._add_rr(name, 0, rd, rdataclass.NONE)
def _add(self, replace, section, name, *args):
"""Add records. The first argument is the replace mode. If
false, RRs are added to an existing RRset; if true, the RRset
is replaced with the specified contents. The second
argument is the section to add to. The third argument
is always a name. The other arguments can be:
- rdataset...
- ttl, rdata...
- ttl, rdtype, string..."""
if isinstance(name, (str, unicode)):
name = name.from_text(name, None)
if isinstance(args[0], rdataset.Rdataset):
for rds in args:
if replace:
self.delete(name, rds.rdtype)
for rd in rds:
self._add_rr(name, rds.ttl, rd, section=section)
else:
args = list(args)
ttl = int(args.pop(0))
if isinstance(args[0], rdata.Rdata):
if replace:
self.delete(name, args[0].rdtype)
for rd in args:
self._add_rr(name, ttl, rd, section=section)
else:
rdtype = args.pop(0)
if isinstance(rdtype, str):
rdtype = rdatatype.from_text(rdtype)
if replace:
self.delete(name, rdtype)
for s in args:
rd = rdata.from_text(self.zone_rdclass, rdtype, s,
self.origin)
self._add_rr(name, ttl, rd, section=section)
def _add(self, replace, section, name, *args):
"""Add records. The first argument is the replace mode. If
false, RRs are added to an existing RRset; if true, the RRset
is replaced with the specified contents. The second
argument is the section to add to. The third argument
is always a name. The other arguments can be:
- rdataset...
- ttl, rdata...
- ttl, rdtype, string..."""
if isinstance(name, (str, unicode)):
name = name.from_text(name, None)
if isinstance(args[0], rdataset.Rdataset):
for rds in args:
if replace:
self.delete(name, rds.rdtype)
for rd in rds:
self._add_rr(name, rds.ttl, rd, section=section)
else:
args = list(args)
ttl = int(args.pop(0))
if isinstance(args[0], rdata.Rdata):
if replace:
self.delete(name, args[0].rdtype)
for rd in args:
self._add_rr(name, ttl, rd, section=section)
else:
rdtype = args.pop(0)
if isinstance(rdtype, str):
rdtype = rdatatype.from_text(rdtype)
if replace:
self.delete(name, rdtype)
for s in args:
rd = rdata.from_text(self.zone_rdclass, rdtype, s,
self.origin)
self._add_rr(name, ttl, rd, section=section)
def _generate_line(self):
# range lhs [ttl] [class] type rhs [ comment ]
"""Process one line containing the GENERATE statement from a DNS
master file."""
if self.current_origin is None:
raise UnknownOrigin
token = self.tok.get()
# Range (required)
try:
start, stop, step = grange.from_text(token.value)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
except:
raise exception.SyntaxError
# lhs (required)
try:
lhs = token.value
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
except:
raise exception.SyntaxError
# TTL
try:
ttl = ttl.from_text(token.value)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
except ttl.BadTTL:
ttl = self.ttl
# Class
try:
rdclass = rdataclass.from_text(token.value)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
except exception.SyntaxError:
raise exception.SyntaxError
except:
rdclass = self.zone.rdclass
if rdclass != self.zone.rdclass:
raise exception.SyntaxError("RR class is not zone's class")
# Type
try:
rdtype = rdatatype.from_text(token.value)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
except:
raise exception.SyntaxError("unknown rdatatype '%s'" % token.value)
# lhs (required)
try:
rhs = token.value
except:
raise exception.SyntaxError
lmod, lsign, loffset, lwidth, lbase = self._parse_modify(lhs)
rmod, rsign, roffset, rwidth, rbase = self._parse_modify(rhs)
for i in range(start, stop + 1, step):
# +1 because bind is inclusive and python is exclusive
if lsign == '+':
lindex = i + int(loffset)
elif lsign == '-':
lindex = i - int(loffset)
if rsign == '-':
rindex = i - int(roffset)
elif rsign == '+':
rindex = i + int(roffset)
lzfindex = str(lindex).zfill(int(lwidth))
rzfindex = str(rindex).zfill(int(rwidth))
name = lhs.replace('$%s' % (lmod), lzfindex)
rdata = rhs.replace('$%s' % (rmod), rzfindex)
self.last_name = name.from_text(name, self.current_origin)
name = self.last_name
if not name.is_subdomain(self.zone.origin):
self._eat_line()
return
if self.relativize:
name = name.relativize(self.zone.origin)
n = self.zone.nodes.get(name)
if n is None:
n = self.zone.node_factory()
self.zone.nodes[name] = n
try:
rd = rdata.from_text(rdclass, rdtype, rdata,
self.current_origin, False)
except exception.SyntaxError:
# Catch and reraise.
(ty, va) = sys.exc_info()[:2]
raise va
except:
# All exceptions that occur in the processing of rdata
# are treated as syntax errors. This is not strictly
# correct, but it is correct almost all of the time.
# We convert them to syntax errors so that we can emit
# helpful filename:line info.
(ty, va) = sys.exc_info()[:2]
raise exception.SyntaxError("caught exception %s: %s" %
(str(ty), str(va)))
rd.choose_relativity(self.zone.origin, self.relativize)
covers = rd.covers()
rds = n.find_rdataset(rdclass, rdtype, covers, True)
rds.add(rd, ttl)
def _rr_line(self):
"""Process one line from a DNS master file."""
# Name
if self.current_origin is None:
raise UnknownOrigin
token = self.tok.get(want_leading=True)
if not token.is_whitespace():
self.last_name = name.from_text(token.value, self.current_origin)
else:
token = self.tok.get()
if token.is_eol_or_eof():
# treat leading WS followed by EOL/EOF as if they were EOL/EOF.
return
self.tok.unget(token)
name = self.last_name
if not name.is_subdomain(self.zone.origin):
self._eat_line()
return
if self.relativize:
name = name.relativize(self.zone.origin)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
# TTL
try:
ttl = ttl.from_text(token.value)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
except ttl.BadTTL:
ttl = self.ttl
# Class
try:
rdclass = rdataclass.from_text(token.value)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
except exception.SyntaxError:
raise exception.SyntaxError
except:
rdclass = self.zone.rdclass
if rdclass != self.zone.rdclass:
raise exception.SyntaxError("RR class is not zone's class")
# Type
try:
rdtype = rdatatype.from_text(token.value)
except:
raise exception.SyntaxError("unknown rdatatype '%s'" % token.value)
n = self.zone.nodes.get(name)
if n is None:
n = self.zone.node_factory()
self.zone.nodes[name] = n
try:
rd = rdata.from_text(rdclass, rdtype, self.tok,
self.current_origin, False)
except exception.SyntaxError:
# Catch and reraise.
(ty, va) = sys.exc_info()[:2]
raise va
except:
# All exceptions that occur in the processing of rdata
# are treated as syntax errors. This is not strictly
# correct, but it is correct almost all of the time.
# We convert them to syntax errors so that we can emit
# helpful filename:line info.
(ty, va) = sys.exc_info()[:2]
raise exception.SyntaxError("caught exception %s: %s" %
(str(ty), str(va)))
rd.choose_relativity(self.zone.origin, self.relativize)
covers = rd.covers()
rds = n.find_rdataset(rdclass, rdtype, covers, True)
rds.add(rd, ttl)
def _generate_line(self):
# range lhs [ttl] [class] type rhs [ comment ]
"""Process one line containing the GENERATE statement from a DNS
master file."""
if self.current_origin is None:
raise UnknownOrigin
token = self.tok.get()
# Range (required)
try:
start, stop, step = grange.from_text(token.value)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
except:
raise exception.SyntaxError
# lhs (required)
try:
lhs = token.value
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
except:
raise exception.SyntaxError
# TTL
try:
ttl = ttl.from_text(token.value)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
except ttl.BadTTL:
ttl = self.ttl
# Class
try:
rdclass = rdataclass.from_text(token.value)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
except exception.SyntaxError:
raise exception.SyntaxError
except:
rdclass = self.zone.rdclass
if rdclass != self.zone.rdclass:
raise exception.SyntaxError("RR class is not zone's class")
# Type
try:
rdtype = rdatatype.from_text(token.value)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
except:
raise exception.SyntaxError("unknown rdatatype '%s'" %
token.value)
# lhs (required)
try:
rhs = token.value
except:
raise exception.SyntaxError
lmod, lsign, loffset, lwidth, lbase = self._parse_modify(lhs)
rmod, rsign, roffset, rwidth, rbase = self._parse_modify(rhs)
for i in range(start, stop + 1, step):
# +1 because bind is inclusive and python is exclusive
if lsign == '+':
lindex = i + int(loffset)
elif lsign == '-':
lindex = i - int(loffset)
if rsign == '-':
rindex = i - int(roffset)
elif rsign == '+':
rindex = i + int(roffset)
lzfindex = str(lindex).zfill(int(lwidth))
rzfindex = str(rindex).zfill(int(rwidth))
name = lhs.replace('$%s' % (lmod), lzfindex)
rdata = rhs.replace('$%s' % (rmod), rzfindex)
self.last_name = name.from_text(name, self.current_origin)
name = self.last_name
if not name.is_subdomain(self.zone.origin):
self._eat_line()
return
if self.relativize:
name = name.relativize(self.zone.origin)
n = self.zone.nodes.get(name)
if n is None:
n = self.zone.node_factory()
self.zone.nodes[name] = n
try:
rd = rdata.from_text(rdclass, rdtype, rdata,
self.current_origin, False)
except exception.SyntaxError:
# Catch and reraise.
(ty, va) = sys.exc_info()[:2]
raise va
except:
# All exceptions that occur in the processing of rdata
# are treated as syntax errors. This is not strictly
# correct, but it is correct almost all of the time.
# We convert them to syntax errors so that we can emit
# helpful filename:line info.
(ty, va) = sys.exc_info()[:2]
raise exception.SyntaxError("caught exception %s: %s" %
(str(ty), str(va)))
rd.choose_relativity(self.zone.origin, self.relativize)
covers = rd.covers()
rds = n.find_rdataset(rdclass, rdtype, covers, True)
rds.add(rd, ttl)
def _rr_line(self):
"""Process one line from a DNS master file."""
# Name
if self.current_origin is None:
raise UnknownOrigin
token = self.tok.get(want_leading = True)
if not token.is_whitespace():
self.last_name = name.from_text(token.value, self.current_origin)
else:
token = self.tok.get()
if token.is_eol_or_eof():
# treat leading WS followed by EOL/EOF as if they were EOL/EOF.
return
self.tok.unget(token)
name = self.last_name
if not name.is_subdomain(self.zone.origin):
self._eat_line()
return
if self.relativize:
name = name.relativize(self.zone.origin)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
# TTL
try:
ttl = ttl.from_text(token.value)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
except ttl.BadTTL:
ttl = self.ttl
# Class
try:
rdclass = rdataclass.from_text(token.value)
token = self.tok.get()
if not token.is_identifier():
raise exception.SyntaxError
except exception.SyntaxError:
raise exception.SyntaxError
except:
rdclass = self.zone.rdclass
if rdclass != self.zone.rdclass:
raise exception.SyntaxError("RR class is not zone's class")
# Type
try:
rdtype = rdatatype.from_text(token.value)
except:
raise exception.SyntaxError("unknown rdatatype '%s'" % token.value)
n = self.zone.nodes.get(name)
if n is None:
n = self.zone.node_factory()
self.zone.nodes[name] = n
try:
rd = rdata.from_text(rdclass, rdtype, self.tok,
self.current_origin, False)
except exception.SyntaxError:
# Catch and reraise.
(ty, va) = sys.exc_info()[:2]
raise va
except:
# All exceptions that occur in the processing of rdata
# are treated as syntax errors. This is not strictly
# correct, but it is correct almost all of the time.
# We convert them to syntax errors so that we can emit
# helpful filename:line info.
(ty, va) = sys.exc_info()[:2]
raise exception.SyntaxError("caught exception %s: %s" % (str(ty), str(va)))
rd.choose_relativity(self.zone.origin, self.relativize)
covers = rd.covers()
rds = n.find_rdataset(rdclass, rdtype, covers, True)
rds.add(rd, ttl)
