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monero/external/unbound/pythonmod/interface.i
Riccardo Spagni 6a1190792b
update libunbound
2015-05-31 16:36:48 +02:00

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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_t;
#else
typedef long long int rrset_id_t;
#endif
struct ub_packed_rrset_key {
struct lruhash_entry entry;
rrset_id_t id;
struct packed_rrset_key rk;
};
struct lruhash_entry {
lock_rw_t lock;
struct lruhash_entry* overflow_next;
struct lruhash_entry* lru_next;
struct lruhash_entry* lru_prev;
hashvalue_t 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 {
uint32_t ttl; //TTL (in seconds like time())
size_t count; //number of rrs
size_t rrsig_count; //number of rrsigs
enum rrset_trust trust;
enum sec_status security;
size_t* rr_len; //length of every rr's rdata
uint32_t *rr_ttl; //ttl of every rr
uint8_t** rr_data; //array of pointers to every rr's rdata; The rr_data[i] rdata is stored in uncompressed wireformat.
};
%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_t 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 module_qstate
* ************************************************************************************ */
%ignore module_qstate::ext_state;
%ignore module_qstate::minfo;
/* Query state */
struct module_qstate {
struct query_info qinfo;
uint16_t query_flags; //See QF_BIT_xx constants
int is_priming;
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];
struct module_env* env; /* unwrapped */
struct mesh_state* mesh_info;
};
%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
%}
%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;
}
}
%}
%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)
%}
}
/* ************************************************************************************ *
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
};
%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);
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