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monero/external/unbound/pythonmod/interface.i
Erik de Castro Lopo a85b5759f3 Upgrade unbound library 
These files were pulled from the 1.6.3 release tarball.

This new version builds against OpenSSL version 1.1 which will be
the default in the new Debian Stable which is due to be released
RealSoonNow (tm).
2017-06-17 23:04:00 +10:00

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/*
* interface.i: unbound python module
*/
%module unboundmodule
%{
/**
* \file
* This is the interface between the unbound server and a python module
* called to perform operations on queries.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdarg.h>
#include "config.h"
#include "util/log.h"
#include "util/module.h"
#include "util/netevent.h"
#include "util/regional.h"
#include "util/config_file.h"
#include "util/data/msgreply.h"
#include "util/data/packed_rrset.h"
#include "util/data/dname.h"
#include "util/storage/lruhash.h"
#include "services/cache/dns.h"
#include "services/mesh.h"
#include "iterator/iter_delegpt.h"
#include "iterator/iter_hints.h"
#include "iterator/iter_utils.h"
#include "sldns/wire2str.h"
#include "sldns/str2wire.h"
#include "sldns/pkthdr.h"
%}
%include "stdint.i" /* uint_16_t can be known type now */
%inline %{
/* converts [len][data][len][data][0] string to a List of labels (PyBytes) */
PyObject* GetNameAsLabelList(const char* name, int len) {
PyObject* list;
int cnt=0, i;
i = 0;
while (i < len) {
i += name[i] + 1;
cnt++;
}
list = PyList_New(cnt);
i = 0; cnt = 0;
while (i < len) {
PyList_SetItem(list, cnt, PyBytes_FromStringAndSize(name + i + 1, name[i]));
i += name[i] + 1;
cnt++;
}
return list;
}
%}
/* ************************************************************************************ *
Structure query_info
* ************************************************************************************ */
/* Query info */
%ignore query_info::qname;
%ignore query_info::qname_len;
struct query_info {
%immutable;
char* qname;
size_t qname_len;
uint16_t qtype;
uint16_t qclass;
%mutable;
};
%inline %{
enum enum_rr_class {
RR_CLASS_IN = 1,
RR_CLASS_CH = 3,
RR_CLASS_HS = 4,
RR_CLASS_NONE = 254,
RR_CLASS_ANY = 255,
};
enum enum_rr_type {
RR_TYPE_A = 1,
RR_TYPE_NS = 2,
RR_TYPE_MD = 3,
RR_TYPE_MF = 4,
RR_TYPE_CNAME = 5,
RR_TYPE_SOA = 6,
RR_TYPE_MB = 7,
RR_TYPE_MG = 8,
RR_TYPE_MR = 9,
RR_TYPE_NULL = 10,
RR_TYPE_WKS = 11,
RR_TYPE_PTR = 12,
RR_TYPE_HINFO = 13,
RR_TYPE_MINFO = 14,
RR_TYPE_MX = 15,
RR_TYPE_TXT = 16,
RR_TYPE_RP = 17,
RR_TYPE_AFSDB = 18,
RR_TYPE_X25 = 19,
RR_TYPE_ISDN = 20,
RR_TYPE_RT = 21,
RR_TYPE_NSAP = 22,
RR_TYPE_NSAP_PTR = 23,
RR_TYPE_SIG = 24,
RR_TYPE_KEY = 25,
RR_TYPE_PX = 26,
RR_TYPE_GPOS = 27,
RR_TYPE_AAAA = 28,
RR_TYPE_LOC = 29,
RR_TYPE_NXT = 30,
RR_TYPE_EID = 31,
RR_TYPE_NIMLOC = 32,
RR_TYPE_SRV = 33,
RR_TYPE_ATMA = 34,
RR_TYPE_NAPTR = 35,
RR_TYPE_KX = 36,
RR_TYPE_CERT = 37,
RR_TYPE_A6 = 38,
RR_TYPE_DNAME = 39,
RR_TYPE_SINK = 40,
RR_TYPE_OPT = 41,
RR_TYPE_APL = 42,
RR_TYPE_DS = 43,
RR_TYPE_SSHFP = 44,
RR_TYPE_IPSECKEY = 45,
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,
RR_TYPE_MAILB = 253,
RR_TYPE_MAILA = 254,
RR_TYPE_ANY = 255,
RR_TYPE_DLV = 32769,
};
PyObject* _get_qname(struct query_info* q) {
return PyBytes_FromStringAndSize((char*)q->qname, q->qname_len);
}
PyObject* _get_qname_components(struct query_info* q) {
return GetNameAsLabelList((const char*)q->qname, q->qname_len);
}
%}
%inline %{
PyObject* dnameAsStr(const char* dname) {
char buf[LDNS_MAX_DOMAINLEN+1];
buf[0] = '\0';
dname_str((uint8_t*)dname, buf);
return PyBytes_FromString(buf);
}
%}
%extend query_info {
%pythoncode %{
def _get_qtype_str(self): return sldns_wire2str_type(self.qtype)
__swig_getmethods__["qtype_str"] = _get_qtype_str
if _newclass:qtype_str = _swig_property(_get_qtype_str)
def _get_qclass_str(self): return sldns_wire2str_class(self.qclass)
__swig_getmethods__["qclass_str"] = _get_qclass_str
if _newclass:qclass_str = _swig_property(_get_qclass_str)
__swig_getmethods__["qname"] = _unboundmodule._get_qname
if _newclass:qname = _swig_property(_unboundmodule._get_qname)
__swig_getmethods__["qname_list"] = _unboundmodule._get_qname_components
if _newclass:qname_list = _swig_property(_unboundmodule._get_qname_components)
def _get_qname_str(self): return dnameAsStr(self.qname)
__swig_getmethods__["qname_str"] = _get_qname_str
if _newclass:qname_str = _swig_property(_get_qname_str)
%}
}
/* ************************************************************************************ *
Structure packed_rrset_key
* ************************************************************************************ */
%ignore packed_rrset_key::dname;
%ignore packed_rrset_key::dname_len;
/* RRsets */
struct packed_rrset_key {
%immutable;
char* dname;
size_t dname_len;
uint32_t flags;
uint16_t type; /* rrset type in network format */
uint16_t rrset_class; /* rrset class in network format */
%mutable;
};
/**
* This subroutine converts values between the host and network byte order.
* Specifically, ntohs() converts 16-bit quantities from network byte order to
* host byte order.
*/
uint16_t ntohs(uint16_t netshort);
%inline %{
PyObject* _get_dname(struct packed_rrset_key* k) {
return PyBytes_FromStringAndSize((char*)k->dname, k->dname_len);
}
PyObject* _get_dname_components(struct packed_rrset_key* k) {
return GetNameAsLabelList((char*)k->dname, k->dname_len);
}
%}
%extend packed_rrset_key {
%pythoncode %{
def _get_type_str(self): return sldns_wire2str_type(_unboundmodule.ntohs(self.type))
__swig_getmethods__["type_str"] = _get_type_str
if _newclass:type_str = _swig_property(_get_type_str)
def _get_class_str(self): return sldns_wire2str_class(_unboundmodule.ntohs(self.rrset_class))
__swig_getmethods__["rrset_class_str"] = _get_class_str
if _newclass:rrset_class_str = _swig_property(_get_class_str)
__swig_getmethods__["dname"] = _unboundmodule._get_dname
if _newclass:dname = _swig_property(_unboundmodule._get_dname)
__swig_getmethods__["dname_list"] = _unboundmodule._get_dname_components
if _newclass:dname_list = _swig_property(_unboundmodule._get_dname_components)
def _get_dname_str(self): return dnameAsStr(self.dname)
__swig_getmethods__["dname_str"] = _get_dname_str
if _newclass:dname_str = _swig_property(_get_dname_str)
%}
}
#if defined(SWIGWORDSIZE64)
typedef long int rrset_id_type;
#else
typedef long long int rrset_id_type;
#endif
struct ub_packed_rrset_key {
struct lruhash_entry entry;
rrset_id_type id;
struct packed_rrset_key rk;
};
struct lruhash_entry {
lock_rw_type lock;
struct lruhash_entry* overflow_next;
struct lruhash_entry* lru_next;
struct lruhash_entry* lru_prev;
hashvalue_type hash;
void* key;
struct packed_rrset_data* data;
};
%ignore packed_rrset_data::rr_len;
%ignore packed_rrset_data::rr_ttl;
%ignore packed_rrset_data::rr_data;
struct packed_rrset_data {
/* TTL (in seconds like time()) */
uint32_t ttl;
/* number of rrs */
size_t count;
/* number of rrsigs */
size_t rrsig_count;
enum rrset_trust trust;
enum sec_status security;
/* length of every rr's rdata */
size_t* rr_len;
/* ttl of every rr */
uint32_t *rr_ttl;
/* array of pointers to every rr's rdata. The rr_data[i] rdata is stored in
* uncompressed wireformat. */
uint8_t** rr_data;
};
%pythoncode %{
class RRSetData_RRLen:
def __init__(self, obj): self.obj = obj
def __getitem__(self, index): return _unboundmodule._get_data_rr_len(self.obj, index)
def __len__(self): return obj.count + obj.rrsig_count
class RRSetData_RRTTL:
def __init__(self, obj): self.obj = obj
def __getitem__(self, index): return _unboundmodule._get_data_rr_ttl(self.obj, index)
def __setitem__(self, index, value): _unboundmodule._set_data_rr_ttl(self.obj, index, value)
def __len__(self): return obj.count + obj.rrsig_count
class RRSetData_RRData:
def __init__(self, obj): self.obj = obj
def __getitem__(self, index): return _unboundmodule._get_data_rr_data(self.obj, index)
def __len__(self): return obj.count + obj.rrsig_count
%}
%inline %{
PyObject* _get_data_rr_len(struct packed_rrset_data* d, int idx) {
if ((d != NULL) && (idx >= 0) &&
((size_t)idx < (d->count+d->rrsig_count)))
return PyInt_FromLong(d->rr_len[idx]);
return Py_None;
}
void _set_data_rr_ttl(struct packed_rrset_data* d, int idx, uint32_t ttl)
{
if ((d != NULL) && (idx >= 0) &&
((size_t)idx < (d->count+d->rrsig_count)))
d->rr_ttl[idx] = ttl;
}
PyObject* _get_data_rr_ttl(struct packed_rrset_data* d, int idx) {
if ((d != NULL) && (idx >= 0) &&
((size_t)idx < (d->count+d->rrsig_count)))
return PyInt_FromLong(d->rr_ttl[idx]);
return Py_None;
}
PyObject* _get_data_rr_data(struct packed_rrset_data* d, int idx) {
if ((d != NULL) && (idx >= 0) &&
((size_t)idx < (d->count+d->rrsig_count)))
return PyBytes_FromStringAndSize((char*)d->rr_data[idx],
d->rr_len[idx]);
return Py_None;
}
%}
%extend packed_rrset_data {
%pythoncode %{
def _get_data_rr_len(self): return RRSetData_RRLen(self)
__swig_getmethods__["rr_len"] = _get_data_rr_len
if _newclass:rr_len = _swig_property(_get_data_rr_len)
def _get_data_rr_ttl(self): return RRSetData_RRTTL(self)
__swig_getmethods__["rr_ttl"] =_get_data_rr_ttl
if _newclass:rr_len = _swig_property(_get_data_rr_ttl)
def _get_data_rr_data(self): return RRSetData_RRData(self)
__swig_getmethods__["rr_data"] = _get_data_rr_data
if _newclass:rr_len = _swig_property(_get_data_rr_data)
%}
}
/* ************************************************************************************ *
Structure reply_info
* ************************************************************************************ */
/* Messages */
%ignore reply_info::rrsets;
%ignore reply_info::ref;
struct reply_info {
uint16_t flags;
uint16_t qdcount;
uint32_t ttl;
uint32_t prefetch_ttl;
uint16_t authoritative;
enum sec_status security;
size_t an_numrrsets;
size_t ns_numrrsets;
size_t ar_numrrsets;
size_t rrset_count; /* an_numrrsets + ns_numrrsets + ar_numrrsets */
struct ub_packed_rrset_key** rrsets;
struct rrset_ref ref[1]; /* ? */
};
struct rrset_ref {
struct ub_packed_rrset_key* key;
rrset_id_type id;
};
struct dns_msg {
struct query_info qinfo;
struct reply_info *rep;
};
%pythoncode %{
class ReplyInfo_RRSet:
def __init__(self, obj): self.obj = obj
def __getitem__(self, index): return _unboundmodule._rrset_rrsets_get(self.obj, index)
def __len__(self): return obj.rrset_count
class ReplyInfo_Ref:
def __init__(self, obj): self.obj = obj
def __getitem__(self, index): return _unboundmodule._rrset_ref_get(self.obj, index)
def __len__(self): return obj.rrset_count
%}
%inline %{
struct ub_packed_rrset_key* _rrset_rrsets_get(struct reply_info* r, int idx) {
if ((r != NULL) && (idx >= 0) && ((size_t)idx < r->rrset_count))
return r->rrsets[idx];
return NULL;
}
struct rrset_ref* _rrset_ref_get(struct reply_info* r, int idx) {
if ((r != NULL) && (idx >= 0) && ((size_t)idx < r->rrset_count)) {
/* printf("_rrset_ref_get: %lX key:%lX\n", r->ref + idx, r->ref[idx].key); */
return &(r->ref[idx]);
/* return &(r->ref[idx]); */
}
/* printf("_rrset_ref_get: NULL\n"); */
return NULL;
}
%}
%extend reply_info {
%pythoncode %{
def _rrset_ref_get(self): return ReplyInfo_Ref(self)
__swig_getmethods__["ref"] = _rrset_ref_get
if _newclass:ref = _swig_property(_rrset_ref_get)
def _rrset_rrsets_get(self): return ReplyInfo_RRSet(self)
__swig_getmethods__["rrsets"] = _rrset_rrsets_get
if _newclass:rrsets = _swig_property(_rrset_rrsets_get)
%}
}
/* ************************************************************************************ *
Structure mesh_state
* ************************************************************************************ */
struct mesh_state {
struct mesh_reply* reply_list;
};
struct mesh_reply {
struct mesh_reply* next;
struct comm_reply query_reply;
};
struct comm_reply {
};
%inline %{
PyObject* _comm_reply_addr_get(struct comm_reply* reply) {
char dest[64];
reply_addr2str(reply, dest, 64);
if (dest[0] == 0)
return Py_None;
return PyBytes_FromString(dest);
}
PyObject* _comm_reply_family_get(struct comm_reply* reply) {
int af = (int)((struct sockaddr_in*) &(reply->addr))->sin_family;
switch(af) {
case AF_INET: return PyBytes_FromString("ip4");
case AF_INET6: return PyBytes_FromString("ip6");
case AF_UNIX: return PyBytes_FromString("unix");
}
return Py_None;
}
PyObject* _comm_reply_port_get(struct comm_reply* reply) {
uint16_t port;
port = ntohs(((struct sockaddr_in*)&(reply->addr))->sin_port);
return PyInt_FromLong(port);
}
%}
%extend comm_reply {
%pythoncode %{
def _addr_get(self): return _comm_reply_addr_get(self)
__swig_getmethods__["addr"] = _addr_get
if _newclass:addr = _swig_property(_addr_get)
def _port_get(self): return _comm_reply_port_get(self)
__swig_getmethods__["port"] = _port_get
if _newclass:port = _swig_property(_port_get)
def _family_get(self): return _comm_reply_family_get(self)
__swig_getmethods__["family"] = _family_get
if _newclass:family = _swig_property(_family_get)
%}
}
/* ************************************************************************************ *
Structure edns_option
* ************************************************************************************ */
/* Rename the members to follow the python convention of marking them as
* private. Access to the opt_code and opt_data members is given by the later
* python defined code and data members respectively. */
%rename(_next) edns_option::next;
%rename(_opt_code) edns_option::opt_code;
%rename(_opt_len) edns_option::opt_len;
%rename(_opt_data) edns_option::opt_data;
struct edns_option {
struct edns_option* next;
uint16_t opt_code;
size_t opt_len;
uint8_t* opt_data;
};
%inline %{
PyObject* _edns_option_opt_code_get(struct edns_option* option) {
uint16_t opt_code = option->opt_code;
return PyInt_FromLong(opt_code);
}
PyObject* _edns_option_opt_data_get(struct edns_option* option) {
return PyByteArray_FromStringAndSize((void*)option->opt_data,
option->opt_len);
}
%}
%extend edns_option {
%pythoncode %{
def _opt_code_get(self): return _edns_option_opt_code_get(self)
__swig_getmethods__["code"] = _opt_code_get
if _newclass: opt_code = _swig_property(_opt_code_get)
def _opt_data_get(self): return _edns_option_opt_data_get(self)
__swig_getmethods__["data"] = _opt_data_get
if _newclass: opt_data = _swig_property(_opt_data_get)
%}
}
/* ************************************************************************************ *
Structure edns_data
* ************************************************************************************ */
/* This is ignored because we will pass a double pointer of this to Python
* with custom getmethods. This is done to bypass Swig's behavior to pass NULL
* pointers as None. */
%ignore edns_data::opt_list;
struct edns_data {
int edns_present;
uint8_t ext_rcode;
uint8_t edns_version;
uint16_t bits;
uint16_t udp_size;
struct edns_option* opt_list;
};
%inline %{
struct edns_option** _edns_data_opt_list_get(struct edns_data* edns) {
return &edns->opt_list;
}
%}
%extend edns_data {
%pythoncode %{
def _opt_list_iter(self): return EdnsOptsListIter(self.opt_list)
__swig_getmethods__["opt_list_iter"] = _opt_list_iter
if _newclass:opt_list_iter = _swig_property(_opt_list_iter)
def _opt_list(self): return _edns_data_opt_list_get(self)
__swig_getmethods__["opt_list"] = _opt_list
if _newclass:opt_list = _swig_property(_opt_list)
%}
}
/* ************************************************************************************ *
Structure module_env
* ************************************************************************************ */
struct module_env {
struct config_file* cfg;
struct slabhash* msg_cache;
struct rrset_cache* rrset_cache;
struct infra_cache* infra_cache;
struct key_cache* key_cache;
/* --- services --- */
struct outbound_entry* (*send_query)(struct query_info* qinfo,
uint16_t flags, int dnssec, int want_dnssec, int nocaps,
struct sockaddr_storage* addr, socklen_t addrlen,
uint8_t* zone, size_t zonelen, int ssl_upstream,
struct module_qstate* q);
void (*detach_subs)(struct module_qstate* qstate);
int (*attach_sub)(struct module_qstate* qstate,
struct query_info* qinfo, uint16_t qflags, int prime,
int valrec, struct module_qstate** newq);
void (*kill_sub)(struct module_qstate* newq);
int (*detect_cycle)(struct module_qstate* qstate,
struct query_info* qinfo, uint16_t flags, int prime,
int valrec);
struct regional* scratch;
struct sldns_buffer* scratch_buffer;
struct worker* worker;
struct mesh_area* mesh;
struct alloc_cache* alloc;
struct ub_randstate* rnd;
time_t* now;
struct timeval* now_tv;
int need_to_validate;
struct val_anchors* anchors;
struct val_neg_cache* neg_cache;
struct comm_timer* probe_timer;
struct iter_forwards* fwds;
struct iter_hints* hints;
void* modinfo[MAX_MODULE];
void* inplace_cb_lists[inplace_cb_types_total];
struct edns_known_option* edns_known_options;
size_t edns_known_options_num;
};
/* ************************************************************************************ *
Structure module_qstate
* ************************************************************************************ */
%ignore module_qstate::ext_state;
%ignore module_qstate::minfo;
/* These are ignored because we will pass a double pointer of them to Python
* with custom getmethods. This is done to bypass Swig's behavior to pass NULL
* pointers as None. */
%ignore module_qstate::edns_opts_front_in;
%ignore module_qstate::edns_opts_back_out;
%ignore module_qstate::edns_opts_back_in;
%ignore module_qstate::edns_opts_front_out;
/* Query state */
struct module_qstate {
struct query_info qinfo;
uint16_t query_flags; /* See QF_BIT_xx constants */
int is_priming;
int is_valrec;
struct comm_reply* reply;
struct dns_msg* return_msg;
int return_rcode;
struct regional* region; /* unwrapped */
int curmod;
enum module_ext_state ext_state[MAX_MODULE];
void* minfo[MAX_MODULE];
time_t prefetch_leeway;
struct module_env* env; /* unwrapped */
struct mesh_state* mesh_info;
struct edns_option* edns_opts_front_in;
struct edns_option* edns_opts_back_out;
struct edns_option* edns_opts_back_in;
struct edns_option* edns_opts_front_out;
int no_cache_lookup;
int no_cache_store;
};
%constant int MODULE_COUNT = MAX_MODULE;
%constant int QF_BIT_CD = 0x0010;
%constant int QF_BIT_AD = 0x0020;
%constant int QF_BIT_Z = 0x0040;
%constant int QF_BIT_RA = 0x0080;
%constant int QF_BIT_RD = 0x0100;
%constant int QF_BIT_TC = 0x0200;
%constant int QF_BIT_AA = 0x0400;
%constant int QF_BIT_QR = 0x8000;
%inline %{
enum enum_return_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 ExtState:
def __init__(self, obj): self.obj = obj
def __str__(self):
return ", ".join([_unboundmodule.strextstate(_unboundmodule._ext_state_get(self.obj,a)) for a in range(0, _unboundmodule.MODULE_COUNT)])
def __getitem__(self, index): return _unboundmodule._ext_state_get(self.obj, index)
def __setitem__(self, index, value): _unboundmodule._ext_state_set(self.obj, index, value)
def __len__(self): return _unboundmodule.MODULE_COUNT
class EdnsOptsListIter:
def __init__(self, obj):
self._current = obj
self._temp = None
def __iter__(self): return self
def __next__(self):
"""Python 3 compatibility"""
return self._get_next()
def next(self):
"""Python 2 compatibility"""
return self._get_next()
def _get_next(self):
if not edns_opt_list_is_empty(self._current):
self._temp = self._current
self._current = _p_p_edns_option_get_next(self._current)
return _dereference_edns_option(self._temp)
else:
raise StopIteration
%}
%inline %{
enum module_ext_state _ext_state_get(struct module_qstate* q, int idx) {
if ((q != NULL) && (idx >= 0) && (idx < MAX_MODULE)) {
return q->ext_state[idx];
}
return 0;
}
void _ext_state_set(struct module_qstate* q, int idx, enum module_ext_state state) {
if ((q != NULL) && (idx >= 0) && (idx < MAX_MODULE)) {
q->ext_state[idx] = state;
}
}
int edns_opt_list_is_empty(struct edns_option** opt) {
if (!opt || !(*opt)) return 1;
return 0;
}
struct edns_option* _dereference_edns_option(struct edns_option** opt) {
if (!opt) return NULL;
return *opt;
}
struct edns_option** _p_p_edns_option_get_next(struct edns_option** opt) {
return &(*opt)->next;
}
struct edns_option** _edns_opts_front_in_get(struct module_qstate* q) {
return &q->edns_opts_front_in;
}
struct edns_option** _edns_opts_back_out_get(struct module_qstate* q) {
return &q->edns_opts_back_out;
}
struct edns_option** _edns_opts_back_in_get(struct module_qstate* q) {
return &q->edns_opts_back_in;
}
struct edns_option** _edns_opts_front_out_get(struct module_qstate* q) {
return &q->edns_opts_front_out;
}
%}
%extend module_qstate {
%pythoncode %{
def set_ext_state(self, id, state):
"""Sets the ext state"""
_unboundmodule._ext_state_set(self, id, state)
def __ext_state_get(self): return ExtState(self)
__swig_getmethods__["ext_state"] = __ext_state_get
if _newclass:ext_state = _swig_property(__ext_state_get)#, __ext_state_set)
def _edns_opts_front_in_iter(self): return EdnsOptsListIter(self.edns_opts_front_in)
__swig_getmethods__["edns_opts_front_in_iter"] = _edns_opts_front_in_iter
if _newclass:edns_opts_front_in_iter = _swig_property(_edns_opts_front_in_iter)
def _edns_opts_back_out_iter(self): return EdnsOptsListIter(self.edns_opts_back_out)
__swig_getmethods__["edns_opts_back_out_iter"] = _edns_opts_back_out_iter
if _newclass:edns_opts_back_out_iter = _swig_property(_edns_opts_back_out_iter)
def _edns_opts_back_in_iter(self): return EdnsOptsListIter(self.edns_opts_back_in)
__swig_getmethods__["edns_opts_back_in_iter"] = _edns_opts_back_in_iter
if _newclass:edns_opts_back_in_iter = _swig_property(_edns_opts_back_in_iter)
def _edns_opts_front_out_iter(self): return EdnsOptsListIter(self.edns_opts_front_out)
__swig_getmethods__["edns_opts_front_out_iter"] = _edns_opts_front_out_iter
if _newclass:edns_opts_front_out_iter = _swig_property(_edns_opts_front_out_iter)
def _edns_opts_front_in(self): return _edns_opts_front_in_get(self)
__swig_getmethods__["edns_opts_front_in"] = _edns_opts_front_in
if _newclass:edns_opts_front_in = _swig_property(_edns_opts_front_in)
def _edns_opts_back_out(self): return _edns_opts_back_out_get(self)
__swig_getmethods__["edns_opts_back_out"] = _edns_opts_back_out
if _newclass:edns_opts_back_out = _swig_property(_edns_opts_back_out)
def _edns_opts_back_in(self): return _edns_opts_back_in_get(self)
__swig_getmethods__["edns_opts_back_in"] = _edns_opts_back_in
if _newclass:edns_opts_back_in = _swig_property(_edns_opts_back_in)
def _edns_opts_front_out(self): return _edns_opts_front_out_get(self)
__swig_getmethods__["edns_opts_front_out"] = _edns_opts_front_out
if _newclass:edns_opts_front_out = _swig_property(_edns_opts_front_out)
%}
}
/* ************************************************************************************ *
Structure config_strlist
* ************************************************************************************ */
struct config_strlist {
struct config_strlist* next;
char* str;
};
/* ************************************************************************************ *
Structure config_str2list
* ************************************************************************************ */
struct config_str2list {
struct config_str2list* next;
char* str;
char* str2;
};
/* ************************************************************************************ *
Structure config_file
* ************************************************************************************ */
struct config_file {
int verbosity;
int stat_interval;
int stat_cumulative;
int stat_extended;
int num_threads;
int port;
int do_ip4;
int do_ip6;
int do_udp;
int do_tcp;
int outgoing_num_ports;
size_t outgoing_num_tcp;
size_t incoming_num_tcp;
int* outgoing_avail_ports;
size_t msg_buffer_size;
size_t msg_cache_size;
size_t msg_cache_slabs;
size_t num_queries_per_thread;
size_t jostle_time;
size_t rrset_cache_size;
size_t rrset_cache_slabs;
int host_ttl;
size_t infra_cache_slabs;
size_t infra_cache_numhosts;
char* target_fetch_policy;
int if_automatic;
int num_ifs;
char **ifs;
int num_out_ifs;
char **out_ifs;
struct config_strlist* root_hints;
struct config_stub* stubs;
struct config_stub* forwards;
struct config_strlist* donotqueryaddrs;
struct config_str2list* acls;
int donotquery_localhost;
int harden_short_bufsize;
int harden_large_queries;
int harden_glue;
int harden_dnssec_stripped;
int harden_referral_path;
int use_caps_bits_for_id;
struct config_strlist* private_address;
struct config_strlist* private_domain;
size_t unwanted_threshold;
char* chrootdir;
char* username;
char* directory;
char* logfile;
char* pidfile;
int use_syslog;
int hide_identity;
int hide_version;
char* identity;
char* version;
char* module_conf;
struct config_strlist* trust_anchor_file_list;
struct config_strlist* trust_anchor_list;
struct config_strlist* trusted_keys_file_list;
char* dlv_anchor_file;
struct config_strlist* dlv_anchor_list;
int max_ttl;
int32_t val_date_override;
int bogus_ttl;
int val_clean_additional;
int val_permissive_mode;
char* val_nsec3_key_iterations;
size_t key_cache_size;
size_t key_cache_slabs;
size_t neg_cache_size;
struct config_str2list* local_zones;
struct config_strlist* local_zones_nodefault;
struct config_strlist* local_data;
int remote_control_enable;
struct config_strlist* control_ifs;
int control_port;
char* server_key_file;
char* server_cert_file;
char* control_key_file;
char* control_cert_file;
int do_daemonize;
char* python_script;
};
/* ************************************************************************************ *
ASN: Adding structures related to forwards_lookup and dns_cache_find_delegation
* ************************************************************************************ */
struct delegpt_ns {
struct delegpt_ns* next;
int resolved;
uint8_t got4;
uint8_t got6;
uint8_t lame;
uint8_t done_pside4;
uint8_t done_pside6;
};
struct delegpt_addr {
struct delegpt_addr* next_result;
struct delegpt_addr* next_usable;
struct delegpt_addr* next_target;
int attempts;
int sel_rtt;
int bogus;
int lame;
};
struct delegpt {
int namelabs;
struct delegpt_ns* nslist;
struct delegpt_addr* target_list;
struct delegpt_addr* usable_list;
struct delegpt_addr* result_list;
int bogus;
uint8_t has_parent_side_NS;
uint8_t dp_type_mlc;
};
%inline %{
PyObject* _get_dp_dname(struct delegpt* dp) {
return PyBytes_FromStringAndSize((char*)dp->name, dp->namelen);
}
PyObject* _get_dp_dname_components(struct delegpt* dp) {
return GetNameAsLabelList((char*)dp->name, dp->namelen);
}
PyObject* _get_dpns_dname(struct delegpt_ns* dpns) {
return PyBytes_FromStringAndSize((char*)dpns->name, dpns->namelen);
}
PyObject* _get_dpns_dname_components(struct delegpt_ns* dpns) {
return GetNameAsLabelList((char*)dpns->name, dpns->namelen);
}
PyObject* _delegpt_addr_addr_get(struct delegpt_addr* target) {
char dest[64];
delegpt_addr_addr2str(target, dest, 64);
if (dest[0] == 0)
return Py_None;
return PyBytes_FromString(dest);
}
%}
%extend delegpt {
%pythoncode %{
__swig_getmethods__["dname"] = _unboundmodule._get_dp_dname
if _newclass:dname = _swig_property(_unboundmodule._get_dp_dname)
__swig_getmethods__["dname_list"] = _unboundmodule._get_dp_dname_components
if _newclass:dname_list = _swig_property(_unboundmodule._get_dp_dname_components)
def _get_dname_str(self): return dnameAsStr(self.dname)
__swig_getmethods__["dname_str"] = _get_dname_str
if _newclass:dname_str = _swig_property(_get_dname_str)
%}
}
%extend delegpt_ns {
%pythoncode %{
__swig_getmethods__["dname"] = _unboundmodule._get_dpns_dname
if _newclass:dname = _swig_property(_unboundmodule._get_dpns_dname)
__swig_getmethods__["dname_list"] = _unboundmodule._get_dpns_dname_components
if _newclass:dname_list = _swig_property(_unboundmodule._get_dpns_dname_components)
def _get_dname_str(self): return dnameAsStr(self.dname)
__swig_getmethods__["dname_str"] = _get_dname_str
if _newclass:dname_str = _swig_property(_get_dname_str)
%}
}
%extend delegpt_addr {
%pythoncode %{
def _addr_get(self): return _delegpt_addr_addr_get(self)
__swig_getmethods__["addr"] = _addr_get
if _newclass:addr = _swig_property(_addr_get)
%}
}
/* ************************************************************************************ *
Enums
* ************************************************************************************ */
%rename ("MODULE_STATE_INITIAL") "module_state_initial";
%rename ("MODULE_WAIT_REPLY") "module_wait_reply";
%rename ("MODULE_WAIT_MODULE") "module_wait_module";
%rename ("MODULE_WAIT_SUBQUERY") "module_wait_subquery";
%rename ("MODULE_ERROR") "module_error";
%rename ("MODULE_FINISHED") "module_finished";
enum module_ext_state {
module_state_initial = 0,
module_wait_reply,
module_wait_module,
module_wait_subquery,
module_error,
module_finished
};
%rename ("MODULE_EVENT_NEW") "module_event_new";
%rename ("MODULE_EVENT_PASS") "module_event_pass";
%rename ("MODULE_EVENT_REPLY") "module_event_reply";
%rename ("MODULE_EVENT_NOREPLY") "module_event_noreply";
%rename ("MODULE_EVENT_CAPSFAIL") "module_event_capsfail";
%rename ("MODULE_EVENT_MODDONE") "module_event_moddone";
%rename ("MODULE_EVENT_ERROR") "module_event_error";
enum module_ev {
module_event_new = 0,
module_event_pass,
module_event_reply,
module_event_noreply,
module_event_capsfail,
module_event_moddone,
module_event_error
};
enum sec_status {
sec_status_unchecked = 0,
sec_status_bogus,
sec_status_indeterminate,
sec_status_insecure,
sec_status_secure
};
enum verbosity_value {
NO_VERBOSE = 0,
VERB_OPS,
VERB_DETAIL,
VERB_QUERY,
VERB_ALGO
};
enum inplace_cb_list_type {
/* Inplace callbacks for when a resolved reply is ready to be sent to the
* front.*/
inplace_cb_reply = 0,
/* Inplace callbacks for when a reply is given from the cache. */
inplace_cb_reply_cache,
/* Inplace callbacks for when a reply is given with local data
* (or Chaos reply). */
inplace_cb_reply_local,
/* Inplace callbacks for when the reply is servfail. */
inplace_cb_reply_servfail,
/* Inplace callbacks for when a query is ready to be sent to the back.*/
inplace_cb_query,
/* Inplace callback for when a reply is received from the back. */
inplace_cb_edns_back_parsed,
/* Total number of types. Used for array initialization.
* Should always be last. */
inplace_cb_types_total
};
%constant uint16_t PKT_QR = 1; /* QueRy - query flag */
%constant uint16_t PKT_AA = 2; /* Authoritative Answer - server flag */
%constant uint16_t PKT_TC = 4; /* TrunCated - server flag */
%constant uint16_t PKT_RD = 8; /* Recursion Desired - query flag */
%constant uint16_t PKT_CD = 16; /* Checking Disabled - query flag */
%constant uint16_t PKT_RA = 32; /* Recursion Available - server flag */
%constant uint16_t PKT_AD = 64; /* Authenticated Data - server flag */
%{
int checkList(PyObject *l)
{
PyObject* item;
int i;
if (l == Py_None)
return 1;
if (PyList_Check(l))
{
for (i=0; i < PyList_Size(l); i++)
{
item = PyList_GetItem(l, i);
if (!PyBytes_Check(item))
return 0;
}
return 1;
}
return 0;
}
int pushRRList(sldns_buffer* qb, PyObject *l, uint32_t default_ttl, int qsec,
size_t count_offset)
{
PyObject* item;
int i;
size_t len;
for (i=0; i < PyList_Size(l); i++)
{
item = PyList_GetItem(l, i);
len = sldns_buffer_remaining(qb);
if(qsec) {
if(sldns_str2wire_rr_question_buf(PyBytes_AsString(item),
sldns_buffer_current(qb), &len, NULL, NULL, 0, NULL, 0)
!= 0)
return 0;
} else {
if(sldns_str2wire_rr_buf(PyBytes_AsString(item),
sldns_buffer_current(qb), &len, NULL, default_ttl,
NULL, 0, NULL, 0) != 0)
return 0;
}
sldns_buffer_skip(qb, len);
sldns_buffer_write_u16_at(qb, count_offset,
sldns_buffer_read_u16_at(qb, count_offset)+1);
}
return 1;
}
int set_return_msg(struct module_qstate* qstate,
const char* rr_name, sldns_rr_type rr_type, sldns_rr_class rr_class , uint16_t flags, uint32_t default_ttl,
PyObject* question, PyObject* answer, PyObject* authority, PyObject* additional)
{
sldns_buffer *qb = 0;
int res = 1;
size_t l;
uint16_t PKT_QR = 1;
uint16_t PKT_AA = 2;
uint16_t PKT_TC = 4;
uint16_t PKT_RD = 8;
uint16_t PKT_CD = 16;
uint16_t PKT_RA = 32;
uint16_t PKT_AD = 64;
if ((!checkList(question)) || (!checkList(answer)) || (!checkList(authority)) || (!checkList(additional)))
return 0;
if ((qb = sldns_buffer_new(LDNS_RR_BUF_SIZE)) == 0) return 0;
/* write header */
sldns_buffer_write_u16(qb, 0); /* ID */
sldns_buffer_write_u16(qb, 0); /* flags */
sldns_buffer_write_u16(qb, 1); /* qdcount */
sldns_buffer_write_u16(qb, 0); /* ancount */
sldns_buffer_write_u16(qb, 0); /* nscount */
sldns_buffer_write_u16(qb, 0); /* arcount */
if ((flags&PKT_QR)) LDNS_QR_SET(sldns_buffer_begin(qb));
if ((flags&PKT_AA)) LDNS_AA_SET(sldns_buffer_begin(qb));
if ((flags&PKT_TC)) LDNS_TC_SET(sldns_buffer_begin(qb));
if ((flags&PKT_RD)) LDNS_RD_SET(sldns_buffer_begin(qb));
if ((flags&PKT_CD)) LDNS_CD_SET(sldns_buffer_begin(qb));
if ((flags&PKT_RA)) LDNS_RA_SET(sldns_buffer_begin(qb));
if ((flags&PKT_AD)) LDNS_AD_SET(sldns_buffer_begin(qb));
/* write the query */
l = sldns_buffer_remaining(qb);
if(sldns_str2wire_dname_buf(rr_name, sldns_buffer_current(qb), &l) != 0) {
sldns_buffer_free(qb);
return 0;
}
sldns_buffer_skip(qb, l);
if (rr_type == 0) { rr_type = LDNS_RR_TYPE_A; }
if (rr_class == 0) { rr_class = LDNS_RR_CLASS_IN; }
sldns_buffer_write_u16(qb, rr_type);
sldns_buffer_write_u16(qb, rr_class);
/* write RR sections */
if(res && !pushRRList(qb, question, default_ttl, 1, LDNS_QDCOUNT_OFF))
res = 0;
if(res && !pushRRList(qb, answer, default_ttl, 0, LDNS_ANCOUNT_OFF))
res = 0;
if(res && !pushRRList(qb, authority, default_ttl, 0, LDNS_NSCOUNT_OFF))
res = 0;
if(res && !pushRRList(qb, additional, default_ttl, 0, LDNS_ARCOUNT_OFF))
res = 0;
if (res) res = createResponse(qstate, qb);
if (qb) sldns_buffer_free(qb);
return res;
}
%}
int set_return_msg(struct module_qstate* qstate,
const char* rr_name, int rr_type, int rr_class , uint16_t flags, uint32_t default_ttl,
PyObject* question, PyObject* answer, PyObject* authority, PyObject* additional);
%pythoncode %{
class DNSMessage:
def __init__(self, rr_name, rr_type, rr_class = RR_CLASS_IN, query_flags = 0, default_ttl = 0):
"""Query flags is a combination of PKT_xx contants"""
self.rr_name = rr_name
self.rr_type = rr_type
self.rr_class = rr_class
self.default_ttl = default_ttl
self.query_flags = query_flags
self.question = []
self.answer = []
self.authority = []
self.additional = []
def set_return_msg(self, qstate):
"""Returns 1 if OK"""
status = _unboundmodule.set_return_msg(qstate, self.rr_name, self.rr_type, self.rr_class,
self.query_flags, self.default_ttl,
self.question, self.answer, self.authority, self.additional)
if (status) and (PKT_AA & self.query_flags):
qstate.return_msg.rep.authoritative = 1
return status
%}
/* ************************************************************************************ *
ASN: Delegation pointer related functions
* ************************************************************************************ */
/* Functions which we will need to lookup delegations */
struct delegpt* dns_cache_find_delegation(struct module_env* env,
uint8_t* qname, size_t qnamelen, uint16_t qtype, uint16_t qclass,
struct regional* region, struct dns_msg** msg, uint32_t timenow);
int iter_dp_is_useless(struct query_info* qinfo, uint16_t qflags,
struct delegpt* dp);
struct iter_hints_stub* hints_lookup_stub(struct iter_hints* hints,
uint8_t* qname, uint16_t qclass, struct delegpt* dp);
/* Custom function to perform logic similar to the one in daemon/cachedump.c */
struct delegpt* find_delegation(struct module_qstate* qstate, char *nm, size_t nmlen);
%{
#define BIT_RD 0x100
struct delegpt* find_delegation(struct module_qstate* qstate, char *nm, size_t nmlen)
{
struct delegpt *dp;
struct dns_msg *msg = NULL;
struct regional* region = qstate->env->scratch;
char b[260];
struct query_info qinfo;
struct iter_hints_stub* stub;
uint32_t timenow = *qstate->env->now;
regional_free_all(region);
qinfo.qname = (uint8_t*)nm;
qinfo.qname_len = nmlen;
qinfo.qtype = LDNS_RR_TYPE_A;
qinfo.qclass = LDNS_RR_CLASS_IN;
while(1) {
dp = dns_cache_find_delegation(qstate->env, (uint8_t*)nm, nmlen, qinfo.qtype, qinfo.qclass, region, &msg, timenow);
if(!dp)
return NULL;
if(iter_dp_is_useless(&qinfo, BIT_RD, dp)) {
if (dname_is_root((uint8_t*)nm))
return NULL;
nm = (char*)dp->name;
nmlen = dp->namelen;
dname_remove_label((uint8_t**)&nm, &nmlen);
dname_str((uint8_t*)nm, b);
continue;
}
stub = hints_lookup_stub(qstate->env->hints, qinfo.qname, qinfo.qclass, dp);
if (stub) {
return stub->dp;
} else {
return dp;
}
}
return NULL;
}
%}
/* ************************************************************************************ *
Functions
* ************************************************************************************ */
/******************************
* Various debuging functions *
******************************/
void verbose(enum verbosity_value level, const char* format, ...);
void log_info(const char* format, ...);
void log_err(const char* format, ...);
void log_warn(const char* format, ...);
void log_hex(const char* msg, void* data, size_t length);
void log_dns_msg(const char* str, struct query_info* qinfo, struct reply_info* rep);
void log_query_info(enum verbosity_value v, const char* str, struct query_info* qinf);
void regional_log_stats(struct regional *r);
/***************************************************************************
* Free allocated memory from marked sources returning corresponding types *
***************************************************************************/
%typemap(newfree, noblock = 1) char * {
free($1);
}
/***************************************************
* Mark as source returning newly allocated memory *
***************************************************/
%newobject sldns_wire2str_type;
%newobject sldns_wire2str_class;
/******************
* LDNS functions *
******************/
char *sldns_wire2str_type(const uint16_t atype);
char *sldns_wire2str_class(const uint16_t aclass);
/**********************************
* Functions from pythonmod_utils *
**********************************/
int storeQueryInCache(struct module_qstate* qstate, struct query_info* qinfo, struct reply_info* msgrep, int is_referral);
void invalidateQueryInCache(struct module_qstate* qstate, struct query_info* qinfo);
/*******************************
* Module conversion functions *
*******************************/
const char* strextstate(enum module_ext_state s);
const char* strmodulevent(enum module_ev e);
/**************************
* Edns related functions *
**************************/
struct edns_option* edns_opt_list_find(struct edns_option* list, uint16_t code);
int edns_register_option(uint16_t opt_code, int bypass_cache_stage,
int no_aggregation, struct module_env* env);
%pythoncode %{
def register_edns_option(env, code, bypass_cache_stage=False,
no_aggregation=False):
"""Wrapper function to provide keyword attributes."""
return edns_register_option(code, bypass_cache_stage,
no_aggregation, env)
%}
/******************************
* Callback related functions *
******************************/
/* typemap to check if argument is callable */
%typemap(in) PyObject *py_cb {
if (!PyCallable_Check($input)) {
SWIG_exception_fail(SWIG_TypeError, "Need a callable object!");
return NULL;
}
$1 = $input;
}
/* typemap to get content/size from a bytearray */
%typemap(in) (size_t len, uint8_t* py_bytearray_data) {
if (!PyByteArray_CheckExact($input)) {
SWIG_exception_fail(SWIG_TypeError, "Expected bytearray!");
return NULL;
}
$2 = (void*)PyByteArray_AsString($input);
$1 = PyByteArray_Size($input);
}
int edns_opt_list_remove(struct edns_option** list, uint16_t code);
int edns_opt_list_append(struct edns_option** list, uint16_t code, size_t len,
uint8_t* py_bytearray_data, struct regional* region);
%{
/* This function is called by unbound in order to call the python
* callback function. */
int python_inplace_cb_reply_generic(struct query_info* qinfo,
struct module_qstate* qstate, struct reply_info* rep, int rcode,
struct edns_data* edns, struct edns_option** opt_list_out,
struct regional* region, int id, void* python_callback)
{
PyObject *func, *py_edns, *py_qstate, *py_opt_list_out, *py_qinfo;
PyObject *py_rep, *py_region;
PyObject *result;
int res = 0;
PyGILState_STATE gstate = PyGILState_Ensure();
func = (PyObject *) python_callback;
py_edns = SWIG_NewPointerObj((void*) edns, SWIGTYPE_p_edns_data, 0);
py_qstate = SWIG_NewPointerObj((void*) qstate,
SWIGTYPE_p_module_qstate, 0);
py_opt_list_out = SWIG_NewPointerObj((void*) opt_list_out,
SWIGTYPE_p_p_edns_option, 0);
py_qinfo = SWIG_NewPointerObj((void*) qinfo, SWIGTYPE_p_query_info, 0);
py_rep = SWIG_NewPointerObj((void*) rep, SWIGTYPE_p_reply_info, 0);
py_region = SWIG_NewPointerObj((void*) region, SWIGTYPE_p_regional, 0);
result = PyObject_CallFunction(func, "OOOiOOO", py_qinfo, py_qstate,
py_rep, rcode, py_edns, py_opt_list_out, py_region);
Py_XDECREF(py_edns);
Py_XDECREF(py_qstate);
Py_XDECREF(py_opt_list_out);
Py_XDECREF(py_qinfo);
Py_XDECREF(py_rep);
Py_XDECREF(py_region);
if (result) {
res = PyInt_AsLong(result);
}
Py_XDECREF(result);
PyGILState_Release(gstate);
return res;
}
/* register a callback */
static int python_inplace_cb_register(enum inplace_cb_list_type type,
PyObject* py_cb, struct module_env* env, int id)
{
int ret = inplace_cb_register(python_inplace_cb_reply_generic,
type, (void*) py_cb, env, id);
if (ret) Py_INCREF(py_cb);
return ret;
}
/* Swig implementations for Python */
static int register_inplace_cb_reply(PyObject* py_cb,
struct module_env* env, int id)
{
return python_inplace_cb_register(inplace_cb_reply, py_cb, env, id);
}
static int register_inplace_cb_reply_cache(PyObject* py_cb,
struct module_env* env, int id)
{
return python_inplace_cb_register(inplace_cb_reply_cache, py_cb, env, id);
}
static int register_inplace_cb_reply_local(PyObject* py_cb,
struct module_env* env, int id)
{
return python_inplace_cb_register(inplace_cb_reply_local, py_cb, env, id);
}
static int register_inplace_cb_reply_servfail(PyObject* py_cb,
struct module_env* env, int id)
{
return python_inplace_cb_register(inplace_cb_reply_servfail,
py_cb, env, id);
}
%}
/* C declarations */
int inplace_cb_register(void* cb, enum inplace_cb_list_type type, void* cbarg,
struct module_env* env, int id);
/* Swig declarations */
static int register_inplace_cb_reply(PyObject* py_cb,
struct module_env* env, int id);
static int register_inplace_cb_reply_cache(PyObject* py_cb,
struct module_env* env, int id);
static int register_inplace_cb_reply_local(PyObject* py_cb,
struct module_env* env, int id);
static int register_inplace_cb_reply_servfail(PyObject* py_cb,
struct module_env* env, int id);
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