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authorSimo Sorce <ssorce@redhat.com>2007-12-10 16:31:21 -0500
committerSimo Sorce <ssorce@redhat.com>2007-12-10 16:31:21 -0500
commitc0b809efd5c9ad71cce834d1080cc40eb0c781d4 (patch)
tree01697ad7511d0f6a97c789ed425a2a120bf1c8f5 /ipa-client/ipaclient
parentf169641aae82cf8e96cd2296a4ba61d67548623c (diff)
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Move dnsclient into ipa-python so that I will be able to use it in ipaconfig
Diffstat (limited to 'ipa-client/ipaclient')
-rw-r--r--ipa-client/ipaclient/Makefile.am1
-rw-r--r--ipa-client/ipaclient/__init__.py2
-rw-r--r--ipa-client/ipaclient/dnsclient.py445
-rw-r--r--ipa-client/ipaclient/ipadiscovery.py14
4 files changed, 8 insertions, 454 deletions
diff --git a/ipa-client/ipaclient/Makefile.am b/ipa-client/ipaclient/Makefile.am
index 038238926..290ffef8d 100644
--- a/ipa-client/ipaclient/Makefile.am
+++ b/ipa-client/ipaclient/Makefile.am
@@ -3,7 +3,6 @@ NULL =
appdir = $(IPA_DATA_DIR)/ipaclient
app_PYTHON = \
__init__.py \
- dnsclient.py \
ipachangeconf.py \
ipadiscovery.py \
ntpconf.py \
diff --git a/ipa-client/ipaclient/__init__.py b/ipa-client/ipaclient/__init__.py
index c07a549a5..ba14d3c4c 100644
--- a/ipa-client/ipaclient/__init__.py
+++ b/ipa-client/ipaclient/__init__.py
@@ -18,5 +18,5 @@
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
-__all__ = ["ipadiscovery", "ipachangeconf", "dnsclient"]
+__all__ = ["ipadiscovery", "ipachangeconf"]
diff --git a/ipa-client/ipaclient/dnsclient.py b/ipa-client/ipaclient/dnsclient.py
deleted file mode 100644
index bc8a229cd..000000000
--- a/ipa-client/ipaclient/dnsclient.py
+++ /dev/null
@@ -1,445 +0,0 @@
-#
-# Copyright 2001, 2005 Red Hat, Inc.
-#
-# This is free software; you can redistribute it and/or modify it
-# under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-#
-
-import struct
-import socket
-import sys
-
-import acutil
-
-DNS_C_IN = 1
-DNS_C_CS = 2
-DNS_C_CHAOS = 3
-DNS_C_HS = 4
-DNS_C_ANY = 255
-
-DNS_T_A = 1
-DNS_T_NS = 2
-DNS_T_CNAME = 5
-DNS_T_SOA = 6
-DNS_T_NULL = 10
-DNS_T_WKS = 11
-DNS_T_PTR = 12
-DNS_T_HINFO = 13
-DNS_T_MX = 15
-DNS_T_TXT = 16
-DNS_T_SRV = 33
-DNS_T_ANY = 255
-
-DEBUG_DNSCLIENT = False
-
-class DNSQueryHeader:
- FORMAT = "!HBBHHHH"
- def __init__(self):
- self.dns_id = 0
- self.dns_rd = 0
- self.dns_tc = 0
- self.dns_aa = 0
- self.dns_opcode = 0
- self.dns_qr = 0
- self.dns_rcode = 0
- self.dns_z = 0
- self.dns_ra = 0
- self.dns_qdcount = 0
- self.dns_ancount = 0
- self.dns_nscount = 0
- self.dns_arcount = 0
-
- def pack(self):
- return struct.pack(DNSQueryHeader.FORMAT,
- self.dns_id,
- (self.dns_rd & 1) |
- (self.dns_tc & 1) << 1 |
- (self.dns_aa & 1) << 2 |
- (self.dns_opcode & 15) << 3 |
- (self.dns_qr & 1) << 7,
- (self.dns_rcode & 15) |
- (self.dns_z & 7) << 4 |
- (self.dns_ra & 1) << 7,
- self.dns_qdcount,
- self.dns_ancount,
- self.dns_nscount,
- self.dns_arcount)
-
- def unpack(self, data):
- (self.dns_id, byte1, byte2, self.dns_qdcount, self.dns_ancount,
- self.dns_nscount, self.dns_arcount) = struct.unpack(DNSQueryHeader.FORMAT, data[0:self.size()])
- self.dns_rd = byte1 & 1
- self.dns_tc = (byte1 >> 1) & 1
- self.dns_aa = (byte1 >> 2) & 1
- self.dns_opcode = (byte1 >> 3) & 15
- self.dns_qr = (byte1 >> 7) & 1
- self.dns_rcode = byte2 & 15
- self.dns_z = (byte2 >> 4) & 7
- self.dns_ra = (byte1 >> 7) & 1
-
- def size(self):
- return struct.calcsize(DNSQueryHeader.FORMAT)
-
-def unpackQueryHeader(data):
- header = DNSQueryHeader()
- header.unpack(data)
- return header
-
-class DNSResult:
- FORMAT = "!HHIH"
- QFORMAT = "!HH"
- def __init__(self):
- self.dns_name = ""
- self.dns_type = 0
- self.dns_class = 0
- self.dns_ttl = 0
- self.dns_rlength = 0
- self.rdata = None
-
- def unpack(self, data):
- (self.dns_type, self.dns_class, self.dns_ttl,
- self.dns_rlength) = struct.unpack(DNSResult.FORMAT, data[0:self.size()])
-
- def qunpack(self, data):
- (self.dns_type, self.dns_class) = struct.unpack(DNSResult.QFORMAT, data[0:self.qsize()])
-
- def size(self):
- return struct.calcsize(DNSResult.FORMAT)
-
- def qsize(self):
- return struct.calcsize(DNSResult.QFORMAT)
-
-class DNSRData:
- def __init__(self):
- pass
-
-#typedef struct dns_rr_a {
-# u_int32_t address;
-#} dns_rr_a_t;
-#
-#typedef struct dns_rr_cname {
-# const char *cname;
-#} dns_rr_cname_t;
-#
-#typedef struct dns_rr_hinfo {
-# const char *cpu, *os;
-#} dns_rr_hinfo_t;
-#
-#typedef struct dns_rr_mx {
-# u_int16_t preference;
-# const char *exchange;
-#} dns_rr_mx_t;
-#
-#typedef struct dns_rr_null {
-# unsigned const char *data;
-#} dns_rr_null_t;
-#
-#typedef struct dns_rr_ns {
-# const char *nsdname;
-#} dns_rr_ns_t;
-#
-#typedef struct dns_rr_ptr {
-# const char *ptrdname;
-#} dns_rr_ptr_t;
-#
-#typedef struct dns_rr_soa {
-# const char *mname;
-# const char *rname;
-# u_int32_t serial;
-# int32_t refresh;
-# int32_t retry;
-# int32_t expire;
-# int32_t minimum;
-#} dns_rr_soa_t;
-#
-#typedef struct dns_rr_txt {
-# const char *data;
-#} dns_rr_txt_t;
-#
-#typedef struct dns_rr_srv {
-# const char *server;
-# u_int16_t priority;
-# u_int16_t weight;
-# u_int16_t port;
-#} dns_rr_srv_t;
-
-def dnsNameToLabel(name):
- out = ""
- name = name.split(".")
- for part in name:
- out += chr(len(part)) + part
- return out
-
-def dnsFormatQuery(query, qclass, qtype):
- header = DNSQueryHeader()
-
- header.dns_id = 0 # FIXME: id = 0
- header.dns_rd = 1 # don't know why the original code didn't request recursion for non SOA requests
- header.dns_qr = 0 # query
- header.dns_opcode = 0 # standard query
- header.dns_qdcount = 1 # single query
-
- qlabel = dnsNameToLabel(query)
- if not qlabel:
- return ""
-
- out = header.pack() + qlabel
- out += chr(qtype >> 8)
- out += chr(qtype & 0xff)
- out += chr(qclass >> 8)
- out += chr(qclass & 0xff)
-
- return out
-
-def dnsParseLabel(label, base):
- # returns (output, rest)
- if not label:
- return ("", None)
-
- update = 1
- rest = label
- output = ""
- skip = 0
-
- try:
- while ord(rest[0]):
- if ord(rest[0]) & 0xc0:
- rest = base[((ord(rest[0]) & 0x3f) << 8) + ord(rest[1]):]
- if update:
- skip += 2
- update = 0
- continue
- output += rest[1:ord(rest[0]) + 1] + "."
- if update:
- skip += ord(rest[0]) + 1
- rest = rest[ord(rest[0]) + 1:]
- except IndexError:
- return ("", None)
- return (label[skip+update:], output)
-
-def dnsParseA(data, base):
- rdata = DNSRData()
- if len(data) < 4:
- rdata.address = 0
- return None
-
- rdata.address = (ord(data[0])<<24) | (ord(data[1])<<16) | (ord(data[2])<<8) | (ord(data[3])<<0)
-
- if DEBUG_DNSCLIENT:
- print "A = %d.%d.%d.%d." % (ord(data[0]), ord(data[1]), ord(data[2]), ord(data[3]))
- return rdata
-
-def dnsParseText(data):
- if len(data) < 1:
- return ("", None)
- tlen = ord(data[0])
- if len(data) < tlen + 1:
- return ("", None)
- return (data[tlen+1:], data[1:tlen+1])
-
-def dnsParseNS(data, base):
- rdata = DNSRData()
- (rest, rdata.nsdname) = dnsParseLabel(data, base)
- if DEBUG_DNSCLIENT:
- print "NS DNAME = \"%s\"." % (rdata.nsdname)
- return rdata
-
-def dnsParseCNAME(data, base):
- rdata = DNSRData()
- (rest, rdata.cname) = dnsParseLabel(data, base)
- if DEBUG_DNSCLIENT:
- print "CNAME = \"%s\"." % (rdata.cname)
- return rdata
-
-def dnsParseSOA(data, base):
- rdata = DNSRData()
- format = "!IIIII"
-
- (rest, rdata.mname) = dnsParseLabel(data, base)
- if rdata.mname is None:
- return None
- (rest, rdata.rname) = dnsParseLabel(rest, base)
- if rdata.rname is None:
- return None
- if len(rest) < struct.calcsize(format):
- return None
-
- (rdata.serial, rdata.refresh, rdata.retry, rdata.expire,
- rdata.minimum) = struct.unpack(format, rest[:struct.calcsize(format)])
-
- if DEBUG_DNSCLIENT:
- print "SOA(mname) = \"%s\"." % rdata.mname
- print "SOA(rname) = \"%s\"." % rdata.rname
- print "SOA(serial) = %d." % rdata.serial
- print "SOA(refresh) = %d." % rdata.refresh
- print "SOA(retry) = %d." % rdata.retry
- print "SOA(expire) = %d." % rdata.expire
- print "SOA(minimum) = %d." % rdata.minimum
- return rdata
-
-def dnsParseNULL(data, base):
- # um, yeah
- return None
-
-def dnsParseWKS(data, base):
- return None
-
-def dnsParseHINFO(data, base):
- rdata = DNSRData()
- (rest, rdata.cpu) = dnsParseText(data)
- if rest:
- (rest, rdata.os) = dnsParseText(rest)
- if DEBUG_DNSCLIENT:
- print "HINFO(cpu) = \"%s\"." % rdata.cpu
- print "HINFO(os) = \"%s\"." % rdata.os
- return rdata
-
-def dnsParseMX(data, base):
- rdata = DNSRData()
- if len(data) < 2:
- return None
- rdata.preference = (ord(data[0]) << 8) | ord(data[1])
- (rest, rdata.exchange) = dnsParseLabel(data[2:], base)
- if DEBUG_DNSCLIENT:
- print "MX(exchanger) = \"%s\"." % rdata.exchange
- print "MX(preference) = %d." % rdata.preference
- return rdata
-
-def dnsParseTXT(data, base):
- rdata = DNSRData()
- (rest, rdata.data) = dnsParseText(data)
- if DEBUG_DNSCLIENT:
- print "TXT = \"%s\"." % rdata.data
- return rdata
-
-def dnsParsePTR(data, base):
- rdata = DNSRData()
- (rest, rdata.ptrdname) = dnsParseLabel(data, base)
- if DEBUG_DNSCLIENT:
- print "PTR = \"%s\"." % rdata.ptrdname
-
-def dnsParseSRV(data, base):
- rdata = DNSRData()
- format = "!HHH"
- flen = struct.calcsize(format)
- if len(data) < flen:
- return None
-
- (rdata.priority, rdata.weight, rdata.port) = struct.unpack(format, data[:flen])
- (rest, rdata.server) = dnsParseLabel(data[flen:], base)
- if DEBUG_DNSCLIENT:
- print "SRV(server) = \"%s\"." % rdata.server
- print "SRV(weight) = %d." % rdata.weight
- print "SRV(priority) = %d." % rdata.priority
- print "SRV(port) = %d." % rdata.port
- return rdata
-
-def dnsParseResults(results):
- try:
- header = unpackQueryHeader(results)
- except struct.error:
- return []
-
- if header.dns_qr != 1: # should be a response
- return []
-
- if header.dns_rcode != 0: # should be no error
- return []
-
- rest = results[header.size():]
-
- rrlist = []
-
- for i in xrange(header.dns_qdcount):
- if not rest:
- return []
-
- rr = DNSResult()
-
- (rest, label) = dnsParseLabel(rest, results)
- if label is None:
- return []
-
- if len(rest) < rr.qsize():
- return []
-
- rr.qunpack(rest)
-
- rest = rest[rr.qsize():]
-
- if DEBUG_DNSCLIENT:
- print "Queried for '%s', class = %d, type = %d." % (label,
- rr.dns_class, rr.dns_type)
-
- for i in xrange(header.dns_ancount + header.dns_nscount + header.dns_arcount):
- (rest, label) = dnsParseLabel(rest, results)
- if label is None:
- return []
-
- rr = DNSResult()
-
- rr.dns_name = label
-
- if len(rest) < rr.size():
- return []
-
- rr.unpack(rest)
-
- rest = rest[rr.size():]
-
- if DEBUG_DNSCLIENT:
- print "Answer %d for '%s', class = %d, type = %d, ttl = %d." % (i,
- rr.dns_name, rr.dns_class, rr.dns_type,
- rr.dns_ttl)
-
- if len(rest) < rr.dns_rlength:
- if DEBUG_DNSCLIENT:
- print "Answer too short."
- return []
-
- fmap = { DNS_T_A: dnsParseA, DNS_T_NS: dnsParseNS,
- DNS_T_CNAME: dnsParseCNAME, DNS_T_SOA: dnsParseSOA,
- DNS_T_NULL: dnsParseNULL, DNS_T_WKS: dnsParseWKS,
- DNS_T_PTR: dnsParsePTR, DNS_T_HINFO: dnsParseHINFO,
- DNS_T_MX: dnsParseMX, DNS_T_TXT: dnsParseTXT,
- DNS_T_SRV: dnsParseSRV}
-
- if not rr.dns_type in fmap:
- if DEBUG_DNSCLIENT:
- print "Don't know how to parse RR type %d!" % rr.dns_type
- else:
- rr.rdata = fmap[rr.dns_type](rest[:rr.dns_rlength], results)
-
- rest = rest[rr.dns_rlength:]
- rrlist += [rr]
-
- if not rrlist:
- rrlist = [rr]
- return rrlist
-
-def query(query, qclass, qtype):
- qdata = dnsFormatQuery(query, qclass, qtype)
- if not qdata:
- return []
- answer = acutil.res_send(qdata)
- if not answer:
- return []
- return dnsParseResults(answer)
-
-if __name__ == '__main__':
- DEBUG_DNSCLIENT = True
- print "Sending query."
- rr = query(len(sys.argv) > 1 and sys.argv[1] or "devserv.devel.redhat.com.",
- DNS_C_IN, DNS_T_ANY)
- sys.exit(0)
diff --git a/ipa-client/ipaclient/ipadiscovery.py b/ipa-client/ipaclient/ipadiscovery.py
index 6f44ffd1b..939d41056 100644
--- a/ipa-client/ipaclient/ipadiscovery.py
+++ b/ipa-client/ipaclient/ipadiscovery.py
@@ -20,7 +20,7 @@
import socket
import logging
-import dnsclient
+import ipa.dnsclient
import ldap
from ldap import LDAPError
@@ -191,10 +191,10 @@ class IPADiscovery:
# terminate the name
if not qname.endswith("."):
qname += "."
- results = dnsclient.query(qname, dnsclient.DNS_C_IN, dnsclient.DNS_T_SRV)
+ results = ipa.dnsclient.query(qname, ipa.dnsclient.DNS_C_IN, ipa.dnsclient.DNS_T_SRV)
for result in results:
- if result.dns_type == dnsclient.DNS_T_SRV:
+ if result.dns_type == ipa.dnsclient.DNS_T_SRV:
rserver = result.rdata.server.rstrip(".")
if result.rdata.port and result.rdata.port != 389:
rserver += ":" + str(result.rdata.port)
@@ -214,10 +214,10 @@ class IPADiscovery:
# terminate the name
if not qname.endswith("."):
qname += "."
- results = dnsclient.query(qname, dnsclient.DNS_C_IN, dnsclient.DNS_T_TXT)
+ results = ipa.dnsclient.query(qname, ipa.dnsclient.DNS_C_IN, ipa.dnsclient.DNS_T_TXT)
for result in results:
- if result.dns_type == dnsclient.DNS_T_TXT:
+ if result.dns_type == ipa.dnsclient.DNS_T_TXT:
realm = result.rdata.data
if realm:
break
@@ -228,9 +228,9 @@ class IPADiscovery:
# terminate the name
if not qname.endswith("."):
qname += "."
- results = dnsclient.query(qname, dnsclient.DNS_C_IN, dnsclient.DNS_T_SRV)
+ results = ipa.dnsclient.query(qname, ipa.dnsclient.DNS_C_IN, ipa.dnsclient.DNS_T_SRV)
for result in results:
- if result.dns_type == dnsclient.DNS_T_SRV:
+ if result.dns_type == ipa.dnsclient.DNS_T_SRV:
qname = result.rdata.server.rstrip(".")
if result.rdata.port and result.rdata.port != 88:
qname += ":" + str(result.rdata.port)