/*
* libounbound.i: pyUnbound module (libunbound wrapper for Python)
*
* Copyright (c) 2009, Zdenek Vasicek (vasicek AT fit.vutbr.cz)
* Marek Vavrusa (xvavru00 AT stud.fit.vutbr.cz)
*
* This software is open source.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of the organization nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
%module unbound
%{
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "libunbound/unbound.h"
%}
%pythoncode %{
import encodings.idna
# Ensure compatibility with older python versions
if 'bytes' not in vars():
bytes = str
def ord(s):
if isinstance(s, int):
return s
return __builtins__.ord(s)
%}
//%include "doc.i"
%include "file.i"
%feature("docstring") strerror "Convert error value to a human readable string."
// ================================================================================
// ub_resolve - perform resolution and validation
// ================================================================================
%typemap(in,numinputs=0,noblock=1) (struct ub_result** result)
{
struct ub_result* newubr;
$1 = &newubr;
}
/* result generation */
%typemap(argout,noblock=1) (struct ub_result** result)
{
if(1) { /* new code block for variable on stack */
PyObject* tuple;
tuple = PyTuple_New(2);
PyTuple_SetItem(tuple, 0, $result);
if (result == 0) {
PyTuple_SetItem(tuple, 1, SWIG_NewPointerObj(SWIG_as_voidptr(newubr), SWIGTYPE_p_ub_result, SWIG_POINTER_OWN | 0 ));
} else {
PyTuple_SetItem(tuple, 1, Py_None);
}
$result = tuple;
}
}
// ================================================================================
// ub_ctx - validation context
// ================================================================================
%nodefaultctor ub_ctx; //no default constructor & destructor
%nodefaultdtor ub_ctx;
%newobject ub_ctx_create;
%delobject ub_ctx_delete;
%rename(_ub_ctx_delete) ub_ctx_delete;
%newobject ub_resolve;
%inline %{
void ub_ctx_free_dbg (struct ub_ctx* c) {
printf("******** UB_CTX free 0x%lX ************\n", (long unsigned int)c);
ub_ctx_delete(c);
}
//RR types
enum enum_rr_type
{
/** a host address */
RR_TYPE_A = 1,
/** an authoritative name server */
RR_TYPE_NS = 2,
/** a mail destination (Obsolete - use MX) */
RR_TYPE_MD = 3,
/** a mail forwarder (Obsolete - use MX) */
RR_TYPE_MF = 4,
/** the canonical name for an alias */
RR_TYPE_CNAME = 5,
/** marks the start of a zone of authority */
RR_TYPE_SOA = 6,
/** a mailbox domain name (EXPERIMENTAL) */
RR_TYPE_MB = 7,
/** a mail group member (EXPERIMENTAL) */
RR_TYPE_MG = 8,
/** a mail rename domain name (EXPERIMENTAL) */
RR_TYPE_MR = 9,
/** a null RR (EXPERIMENTAL) */
RR_TYPE_NULL = 10,
/** a well known service description */
RR_TYPE_WKS = 11,
/** a domain name pointer */
RR_TYPE_PTR = 12,
/** host information */
RR_TYPE_HINFO = 13,
/** mailbox or mail list information */
RR_TYPE_MINFO = 14,
/** mail exchange */
RR_TYPE_MX = 15,
/** text strings */
RR_TYPE_TXT = 16,
/** RFC1183 */
RR_TYPE_RP = 17,
/** RFC1183 */
RR_TYPE_AFSDB = 18,
/** RFC1183 */
RR_TYPE_X25 = 19,
/** RFC1183 */
RR_TYPE_ISDN = 20,
/** RFC1183 */
RR_TYPE_RT = 21,
/** RFC1706 */
RR_TYPE_NSAP = 22,
/** RFC1348 */
RR_TYPE_NSAP_PTR = 23,
/** 2535typecode */
RR_TYPE_SIG = 24,
/** 2535typecode */
RR_TYPE_KEY = 25,
/** RFC2163 */
RR_TYPE_PX = 26,
/** RFC1712 */
RR_TYPE_GPOS = 27,
/** ipv6 address */
RR_TYPE_AAAA = 28,
/** LOC record RFC1876 */
RR_TYPE_LOC = 29,
/** 2535typecode */
RR_TYPE_NXT = 30,
/** draft-ietf-nimrod-dns-01.txt */
RR_TYPE_EID = 31,
/** draft-ietf-nimrod-dns-01.txt */
RR_TYPE_NIMLOC = 32,
/** SRV record RFC2782 */
RR_TYPE_SRV = 33,
/** http://www.jhsoft.com/rfc/af-saa-0069.000.rtf */
RR_TYPE_ATMA = 34,
/** RFC2915 */
RR_TYPE_NAPTR = 35,
/** RFC2230 */
RR_TYPE_KX = 36,
/** RFC2538 */
RR_TYPE_CERT = 37,
/** RFC2874 */
RR_TYPE_A6 = 38,
/** RFC2672 */
RR_TYPE_DNAME = 39,
/** dnsind-kitchen-sink-02.txt */
RR_TYPE_SINK = 40,
/** Pseudo OPT record... */
RR_TYPE_OPT = 41,
/** RFC3123 */
RR_TYPE_APL = 42,
/** draft-ietf-dnsext-delegation */
RR_TYPE_DS = 43,
/** SSH Key Fingerprint */
RR_TYPE_SSHFP = 44,
/** draft-richardson-ipseckey-rr-11.txt */
RR_TYPE_IPSECKEY = 45,
/** draft-ietf-dnsext-dnssec-25 */
RR_TYPE_RRSIG = 46,
RR_TYPE_NSEC = 47,
RR_TYPE_DNSKEY = 48,
RR_TYPE_DHCID = 49,
RR_TYPE_NSEC3 = 50,
RR_TYPE_NSEC3PARAMS = 51,
RR_TYPE_UINFO = 100,
RR_TYPE_UID = 101,
RR_TYPE_GID = 102,
RR_TYPE_UNSPEC = 103,
RR_TYPE_TSIG = 250,
RR_TYPE_IXFR = 251,
RR_TYPE_AXFR = 252,
/** A request for mailbox-related records (MB, MG or MR) */
RR_TYPE_MAILB = 253,
/** A request for mail agent RRs (Obsolete - see MX) */
RR_TYPE_MAILA = 254,
/** any type (wildcard) */
RR_TYPE_ANY = 255,
/* RFC 4431, 5074, DNSSEC Lookaside Validation */
RR_TYPE_DLV = 32769,
};
// RR classes
enum enum_rr_class
{
/** the Internet */
RR_CLASS_IN = 1,
/** Chaos class */
RR_CLASS_CH = 3,
/** Hesiod (Dyer 87) */
RR_CLASS_HS = 4,
/** None class, dynamic update */
RR_CLASS_NONE = 254,
/** Any class */
RR_CLASS_ANY = 255,
};
%}
%feature("docstring") ub_ctx "Unbound resolving and validation context.
The validation context is created to hold the resolver status, validation keys and a small cache (containing messages, rrsets, roundtrip times, trusted keys, lameness information).
**Usage**
>>> import unbound
>>> ctx = unbound.ub_ctx()
>>> ctx.resolvconf(\"/etc/resolv.conf\")
>>> status, result = ctx.resolve(\"www.google.com\", unbound.RR_TYPE_A, unbound.RR_CLASS_IN)
>>> if status==0 and result.havedata:
>>> print \"Result:\",result.data.address_list
Result: ['74.125.43.147', '74.125.43.99', '74.125.43.103', '74.125.43.104']
"
%extend ub_ctx
{
%pythoncode %{
def __init__(self):
"""Creates a resolving and validation context.
An exception is invoked if the process of creation an ub_ctx instance fails.
"""
self.this = _unbound.ub_ctx_create()
if not self.this:
raise Exception("Fatal error: unbound context initialization failed")
#__swig_destroy__ = _unbound.ub_ctx_free_dbg
__swig_destroy__ = _unbound._ub_ctx_delete
#UB_CTX_METHODS_#
def add_ta(self,ta):
"""Add a trust anchor to the given context.
The trust anchor is a string, on one line, that holds a valid DNSKEY or DS RR.
:param ta:
string, with zone-format RR on one line. [domainname] [TTL optional] [type] [class optional] [rdata contents]
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_ctx_add_ta(self,ta)
#parameters: struct ub_ctx *,char *,
#retvals: int
def add_ta_file(self,fname):
"""Add trust anchors to the given context.
Pass name of a file with DS and DNSKEY records (like from dig or drill).
:param fname:
filename of file with keyfile with trust anchors.
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_ctx_add_ta_file(self,fname)
#parameters: struct ub_ctx *,char *,
#retvals: int
def config(self,fname):
"""setup configuration for the given context.
:param fname:
unbound config file (not all settings applicable). This is a power-users interface that lets you specify all sorts of options. For some specific options, such as adding trust anchors, special routines exist.
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_ctx_config(self,fname)
#parameters: struct ub_ctx *,char *,
#retvals: int
def debuglevel(self,d):
"""Set debug verbosity for the context Output is directed to stderr.
:param d:
debug level, 0 is off, 1 is very minimal, 2 is detailed, and 3 is lots.
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_ctx_debuglevel(self,d)
#parameters: struct ub_ctx *,int,
#retvals: int
def debugout(self,out):
"""Set debug output (and error output) to the specified stream.
Pass None to disable. Default is stderr.
:param out:
File stream to log to.
:returns: (int) 0 if OK, else error.
**Usage:**
In order to log into file, use
::
ctx = unbound.ub_ctx()
fw = fopen("debug.log")
ctx.debuglevel(3)
ctx.debugout(fw)
Another option is to print the debug informations to stderr output
::
ctx = unbound.ub_ctx()
ctx.debuglevel(10)
ctx.debugout(sys.stderr)
"""
return _unbound.ub_ctx_debugout(self,out)
#parameters: struct ub_ctx *,void *,
#retvals: int
def hosts(self,fname="/etc/hosts"):
"""Read list of hosts from the filename given.
Usually "/etc/hosts". These addresses are not flagged as DNSSEC secure when queried for.
:param fname:
file name string. If None "/etc/hosts" is used.
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_ctx_hosts(self,fname)
#parameters: struct ub_ctx *,char *,
#retvals: int
def print_local_zones(self):
"""Print the local zones and their content (RR data) to the debug output.
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_ctx_print_local_zones(self)
#parameters: struct ub_ctx *,
#retvals: int
def resolvconf(self,fname="/etc/resolv.conf"):
"""Read list of nameservers to use from the filename given.
Usually "/etc/resolv.conf". Uses those nameservers as caching proxies. If they do not support DNSSEC, validation may fail.
Only nameservers are picked up, the searchdomain, ndots and other settings from resolv.conf(5) are ignored.
:param fname:
file name string. If None "/etc/resolv.conf" is used.
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_ctx_resolvconf(self,fname)
#parameters: struct ub_ctx *,char *,
#retvals: int
def set_async(self,dothread):
"""Set a context behaviour for asynchronous action.
:param dothread:
if True, enables threading and a call to :meth:`resolve_async` creates a thread to handle work in the background.
If False, a process is forked to handle work in the background.
Changes to this setting after :meth:`async` calls have been made have no effect (delete and re-create the context to change).
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_ctx_async(self,dothread)
#parameters: struct ub_ctx *,int,
#retvals: int
def set_fwd(self,addr):
"""Set machine to forward DNS queries to, the caching resolver to use.
IP4 or IP6 address. Forwards all DNS requests to that machine, which is expected to run a recursive resolver. If the is not DNSSEC-capable, validation may fail. Can be called several times, in that case the addresses are used as backup servers.
To read the list of nameservers from /etc/resolv.conf (from DHCP or so), use the call :meth:`resolvconf`.
:param addr:
address, IP4 or IP6 in string format. If the addr is None, forwarding is disabled.
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_ctx_set_fwd(self,addr)
#parameters: struct ub_ctx *,char *,
#retvals: int
def set_option(self,opt,val):
"""Set an option for the context.
Changes to the options after :meth:`resolve`, :meth:`resolve_async`, :meth:`zone_add`, :meth:`zone_remove`, :meth:`data_add` or :meth:`data_remove` have no effect (you have to delete and re-create the context).
:param opt:
option name from the unbound.conf config file format. (not all settings applicable). The name includes the trailing ':' for example set_option("logfile:", "mylog.txt"); This is a power-users interface that lets you specify all sorts of options. For some specific options, such as adding trust anchors, special routines exist.
:param val:
value of the option.
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_ctx_set_option(self,opt,val)
#parameters: struct ub_ctx *,char *,char *,
#retvals: int
def trustedkeys(self,fname):
"""Add trust anchors to the given context.
Pass the name of a bind-style config file with trusted-keys{}.
:param fname:
filename of file with bind-style config entries with trust anchors.
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_ctx_trustedkeys(self,fname)
#parameters: struct ub_ctx *,char *,
#retvals: int
#_UB_CTX_METHODS#
def zone_print(self):
"""Print local zones using debougout"""
_unbound.ub_ctx_print_local_zones(self)
def zone_add(self,zonename,zonetype):
"""Add new local zone
:param zonename: zone domain name (e.g. myzone.)
:param zonetype: type of the zone ("static",...)
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_ctx_zone_add(self,zonename, zonetype)
#parameters: struct ub_ctx *,char*, char*
#retvals: int
def zone_remove(self,zonename):
"""Remove local zone
If exists, removes local zone with all the RRs.
:param zonename: zone domain name
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_ctx_zone_remove(self,zonename)
#parameters: struct ub_ctx *,char*
#retvals: int
def data_add(self,rrdata):
"""Add new local RR data
:param rrdata: string, in zone-format on one line. [domainname] [TTL optional] [type] [class optional] [rdata contents]
:returns: (int) 0 if OK, else error.
**Usage**
The local data ...
::
>>> ctx = unbound.ub_ctx()
>>> ctx.zone_add("mydomain.net.","static")
0
>>> status = ctx.data_add("test.mydomain.net. IN A 192.168.1.1")
0
>>> status, result = ctx.resolve("test.mydomain.net")
>>> if status==0 and result.havedata:
>>> print \"Result:\",result.data.address_list
Result: ['192.168.1.1']
"""
return _unbound.ub_ctx_data_add(self,rrdata)
#parameters: struct ub_ctx *,char*
#retvals: int
def data_remove(self,rrdata):
"""Remove local RR data
If exists, remove resource record from local zone
:param rrdata: string, in zone-format on one line. [domainname] [TTL optional] [type] [class optional] [rdata contents]
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_ctx_data_remove(self,rrdata)
#parameters: struct ub_ctx *,char*
#retvals: int
#UB_METHODS_#
def cancel(self,async_id):
"""Cancel an async query in progress.
Its callback will not be called.
:param async_id:
which query to cancel.
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_cancel(self,async_id)
#parameters: struct ub_ctx *,int,
#retvals: int
def get_fd(self):
"""Get file descriptor.
Wait for it to become readable, at this point answers are returned from the asynchronous validating resolver. Then call the ub_process to continue processing. This routine works immediately after context creation, the fd does not change.
:returns: (int) -1 on error, or file descriptor to use select(2) with.
"""
return _unbound.ub_fd(self)
#parameters: struct ub_ctx *,
#retvals: int
def poll(self):
"""Poll a context to see if it has any new results Do not poll in a loop, instead extract the fd below to poll for readiness, and then check, or wait using the wait routine.
:returns: (int) 0 if nothing to read, or nonzero if a result is available. If nonzero, call ctx_process() to do callbacks.
"""
return _unbound.ub_poll(self)
#parameters: struct ub_ctx *,
#retvals: int
def process(self):
"""Call this routine to continue processing results from the validating resolver (when the fd becomes readable).
Will perform necessary callbacks.
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_process(self)
#parameters: struct ub_ctx *,
#retvals: int
def resolve(self,name,rrtype=RR_TYPE_A,rrclass=RR_CLASS_IN):
"""Perform resolution and validation of the target name.
:param name:
domain name in text format (a string or unicode string). IDN domain name have to be passed as a unicode string.
:param rrtype:
type of RR in host order (optional argument). Default value is RR_TYPE_A (A class).
:param rrclass:
class of RR in host order (optional argument). Default value is RR_CLASS_IN (for internet).
:returns: * (int) 0 if OK, else error.
* (:class:`ub_result`) the result data is returned in a newly allocated result structure. May be None on return, return value is set to an error in that case (out of memory).
"""
if isinstance(name, bytes): #probably IDN
return _unbound.ub_resolve(self,name,rrtype,rrclass)
else:
return _unbound.ub_resolve(self,idn2dname(name),rrtype,rrclass)
#parameters: struct ub_ctx *,char *,int,int,
#retvals: int,struct ub_result **
def resolve_async(self,name,mydata,callback,rrtype=RR_TYPE_A,rrclass=RR_CLASS_IN):
"""Perform resolution and validation of the target name.
Asynchronous, after a while, the callback will be called with your data and the result.
If an error happens during processing, your callback will be called with error set to a nonzero value (and result==None).
:param name:
domain name in text format (a string or unicode string). IDN domain name have to be passed as a unicode string.
:param mydata:
this data is your own data (you can pass arbitrary python object or None) which are passed on to the callback function.
:param callback:
call-back function which is called on completion of the resolution.
:param rrtype:
type of RR in host order (optional argument). Default value is RR_TYPE_A (A class).
:param rrclass:
class of RR in host order (optional argument). Default value is RR_CLASS_IN (for internet).
:returns: * (int) 0 if OK, else error.
* (int) async_id, an identifier number is returned for the query as it is in progress. It can be used to cancel the query.
**Call-back function:**
The call-back function looks as the follows::
def call_back(mydata, status, result):
pass
**Parameters:**
* `mydata` - mydata object
* `status` - 0 when a result has been found
* `result` - the result structure. The result may be None, in that case err is set.
"""
if isinstance(name, bytes): #probably IDN
return _unbound._ub_resolve_async(self,name,rrtype,rrclass,mydata,callback)
else:
return _unbound._ub_resolve_async(self,idn2dname(name),rrtype,rrclass,mydata,callback)
#parameters: struct ub_ctx *,char *,int,int,void *,ub_callback_t,
#retvals: int, int
def wait(self):
"""Wait for a context to finish with results.
Calls after the wait for you. After the wait, there are no more outstanding asynchronous queries.
:returns: (int) 0 if OK, else error.
"""
return _unbound.ub_wait(self)
#parameters: struct ub_ctx *,
#retvals: int
#_UB_METHODS#
%}
}
// ================================================================================
// ub_result - validation and resolution results
// ================================================================================
%nodefaultctor ub_result; //no default constructor & destructor
%nodefaultdtor ub_result;
%delobject ub_resolve_free;
%rename(_ub_resolve_free) ub_resolve_free;
%inline %{
void ub_resolve_free_dbg (struct ub_result* r) {
printf("******** UB_RESOLVE free 0x%lX ************\n", (long unsigned int)r);
ub_resolve_free(r);
}
%}
%feature("docstring") ub_result "The validation and resolution results."
//ub_result.rcode
%inline %{
enum result_enum_rcode {
RCODE_NOERROR = 0,
RCODE_FORMERR = 1,
RCODE_SERVFAIL = 2,
RCODE_NXDOMAIN = 3,
RCODE_NOTIMPL = 4,
RCODE_REFUSED = 5,
RCODE_YXDOMAIN = 6,
RCODE_YXRRSET = 7,
RCODE_NXRRSET = 8,
RCODE_NOTAUTH = 9,
RCODE_NOTZONE = 10
};
%}
%pythoncode %{
class ub_data:
"""Class which makes the resolution results accessible"""
def __init__(self, data):
"""Creates ub_data class
:param data: a list of the result data in RAW format
"""
if data == None:
raise Exception("ub_data init: No data")
self.data = data
def __str__(self):
"""Represents data as string"""
return ';'.join([' '.join(map(lambda x:"%02X" % ord(x),a)) for a in self.data])
@staticmethod
def dname2str(s, ofs=0, maxlen=0):
"""Parses DNAME and produces a list of labels
:param ofs: where the conversion should start to parse data
:param maxlen: maximum length (0 means parse to the end)
:returns: list of labels (string)
"""
if not s:
return []
res = []
slen = len(s)
if maxlen > 0:
slen = min(slen, maxlen)
idx = ofs
while (idx < slen):
complen = ord(s[idx])
# In python 3.x `str()` converts the string to unicode which is the expected text string type
res.append(str(s[idx+1:idx+1+complen]))
idx += complen + 1
return res
def as_raw_data(self):
"""Returns a list of RAW strings"""
return self.data
raw = property(as_raw_data, doc="Returns RAW data (a list of binary encoded strings). See :meth:`as_raw_data`")
def as_mx_list(self):
"""Represents data as a list of MX records (query for RR_TYPE_MX)
:returns: list of tuples (priority, dname)
"""
return [(256*ord(rdf[0])+ord(rdf[1]),'.'.join([a for a in self.dname2str(rdf,2)])) for rdf in self.data]
mx_list = property(as_mx_list, doc="Returns a list of tuples containing priority and domain names. See :meth:`as_mx_list`")
def as_idn_mx_list(self):
"""Represents data as a list of MX records (query for RR_TYPE_MX)
:returns: list of tuples (priority, unicode dname)
"""
return [(256*ord(rdf[0])+ord(rdf[1]),'.'.join([encodings.idna.ToUnicode(a) for a in self.dname2str(rdf,2)])) for rdf in self.data]
mx_list_idn = property(as_idn_mx_list, doc="Returns a list of tuples containing priority and IDN domain names. See :meth:`as_idn_mx_list`")
def as_address_list(self):
"""Represents data as a list of IP addresses (query for RR_TYPE_PTR)
:returns: list of strings
"""
return ['.'.join(map(lambda x:str(ord(x)),a)) for a in self.data]
address_list = property(as_address_list, doc="Returns a list of IP addresses. See :meth:`as_address_list`")
def as_domain_list(self):
"""Represents data as a list of domain names (query for RR_TYPE_A)
:returns: list of strings
"""
return map(lambda x:'.'.join(self.dname2str(x)), self.data)
domain_list = property(as_domain_list, doc="Returns a list of domain names. See :meth:`as_domain_list`")
def as_idn_domain_list(self):
"""Represents data as a list of unicode domain names (query for RR_TYPE_A)
:returns: list of strings
"""
return map(lambda x: '.'.join([encodings.idna.ToUnicode(a) for a in self.dname2str(x)]), self.data)
domain_list_idn = property(as_idn_domain_list, doc="Returns a list of IDN domain names. See :meth:`as_idn_domain_list`")
%}
%extend ub_result
{
%rename(_data) data;
PyObject* _ub_result_data(struct ub_result* result) {
PyObject *list;
int i,cnt;
(void)self;
if ((result == 0) || (!result->havedata) || (result->data == 0))
return Py_None;
for (cnt=0,i=0;;i++,cnt++)
if (result->data[i] == 0)
break;
list = PyList_New(cnt);
for (i=0;i<cnt;i++)
PyList_SetItem(list, i, PyBytes_FromStringAndSize(result->data[i],result->len[i]));
return list;
}
PyObject* _packet() {
return PyBytes_FromStringAndSize($self->answer_packet, $self->answer_len);
}
%pythoncode %{
def __init__(self):
raise Exception("This class can't be created directly.")
#__swig_destroy__ = _unbound.ub_resolve_free_dbg
__swig_destroy__ = _unbound._ub_resolve_free
#havedata = property(_unbound.ub_result_havedata_get, _unbound.ub_result_havedata_set, "Havedata property")
rcode2str = {RCODE_NOERROR:'no error', RCODE_FORMERR:'form error', RCODE_SERVFAIL:'serv fail', RCODE_NXDOMAIN:'nx domain', RCODE_NOTIMPL:'not implemented', RCODE_REFUSED:'refused', RCODE_YXDOMAIN:'yxdomain', RCODE_YXRRSET:'yxrrset', RCODE_NXRRSET:'nxrrset', RCODE_NOTAUTH:'not auth', RCODE_NOTZONE:'not zone'}
def _get_rcode_str(self):
"""Returns rcode in display representation form
:returns: string
"""
return self.rcode2str[self.rcode]
__swig_getmethods__["rcode_str"] = _get_rcode_str
if _newclass:rcode_str = _swig_property(_get_rcode_str)
def _get_raw_data(self):
"""Result data, a list of network order DNS rdata items.
Data are represented as a list of strings. To decode RAW data to the list of IP addresses use :attr:`data` attribute which returns an :class:`ub_data` instance containing conversion function.
"""
return self._ub_result_data(self)
__swig_getmethods__["rawdata"] = _get_raw_data
rawdata = property(_get_raw_data, doc="Returns raw data, a list of rdata items. To decode RAW data use the :attr:`data` attribute which returns an instance of :class:`ub_data` containing the conversion functions.")
def _get_data(self):
if not self.havedata: return None
return ub_data(self._ub_result_data(self))
__swig_getmethods__["data"] = _get_data
__swig_getmethods__["packet"] = _packet
data = property(_get_data, doc="Returns :class:`ub_data` instance containing various decoding functions or None")
%}
}
%exception ub_resolve
%{
//printf("resolve_start(%lX)\n",(long unsigned int)arg1);
Py_BEGIN_ALLOW_THREADS
$function
Py_END_ALLOW_THREADS
//printf("resolve_stop()\n");
%}
%include "libunbound/unbound.h"
%inline %{
//SWIG will see the ub_ctx as a class
struct ub_ctx {
};
%}
//ub_ctx_debugout void* parameter correction
int ub_ctx_debugout(struct ub_ctx* ctx, FILE* out);
// ================================================================================
// ub_resolve_async - perform asynchronous resolution and validation
// ================================================================================
%typemap(in,numinputs=0,noblock=1) (int* async_id)
{
int asyncid = -1;
$1 = &asyncid;
}
%apply PyObject* {void* mydata}
/* result generation */
%typemap(argout,noblock=1) (int* async_id)
{
if(1) { /* new code block for variable on stack */
PyObject* tuple;
tuple = PyTuple_New(2);
PyTuple_SetItem(tuple, 0, $result);
PyTuple_SetItem(tuple, 1, SWIG_From_int(asyncid));
$result = tuple;
}
}
// Grab a Python function object as a Python object.
%typemap(in) (PyObject *pyfunc) {
if (!PyCallable_Check($input))
{
PyErr_SetString(PyExc_TypeError, "Need a callable object!");
return NULL;
}
$1 = $input;
}
// Python callback workaround
int _ub_resolve_async(struct ub_ctx* ctx, char* name, int rrtype, int rrclass, void* mydata, PyObject *pyfunc, int* async_id);
%{
struct cb_data {
PyObject* data;
PyObject* func;
};
static void PythonCallBack(void* iddata, int status, struct ub_result* result)
{
PyObject *arglist;
PyObject *fresult;
struct cb_data* id;
id = (struct cb_data*) iddata;
arglist = Py_BuildValue("(OiO)",id->data,status, SWIG_NewPointerObj(SWIG_as_voidptr(result), SWIGTYPE_p_ub_result, 0 | 0 )); // Build argument list
fresult = PyEval_CallObject(id->func,arglist); // Call Python
Py_DECREF(id->func);
Py_DECREF(id->data);
free(id);
ub_resolve_free(result); //free ub_result
//ub_resolve_free_dbg(result); //free ub_result
Py_DECREF(arglist); // Trash arglist
Py_XDECREF(fresult);
}
int _ub_resolve_async(struct ub_ctx* ctx, char* name, int rrtype, int rrclass, PyObject* mydata, PyObject *pyfunc, int* async_id) {
int r;
struct cb_data* id;
id = (struct cb_data*) malloc(sizeof(struct cb_data));
id->data = mydata;
id->func = pyfunc;
r = ub_resolve_async(ctx,name,rrtype,rrclass, (void *) id, PythonCallBack, async_id);
Py_INCREF(mydata);
Py_INCREF(pyfunc);
return r;
}
%}
%pythoncode %{
ub_resolve_async = _unbound._ub_resolve_async
def reverse(domain):
"""Reverse domain name
Usable for reverse lookups when the IP address should be reversed
"""
return '.'.join([a for a in domain.split(".")][::-1])
def idn2dname(idnname):
"""Converts domain name in IDN format to canonic domain name
:param idnname: (unicode string) IDN name
:returns: (string) domain name
"""
return '.'.join([encodings.idna.ToASCII(a) for a in idnname.split('.')])
def dname2idn(name):
"""Converts canonic domain name in IDN format to unicode string
:param name: (string) domain name
:returns: (unicode string) domain name
"""
return '.'.join([encodings.idna.ToUnicode(a) for a in name.split('.')])
%}