1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/* Copyright (C) 2024 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include "knot/include/module.h"
#include "knot/query/layer.h"
#include "knot/updates/acl.h"
#include "knot/zone/zone.h"
/* Query processing module implementation. */
const knot_layer_api_t *process_query_layer(void);
/*! \brief Query processing intermediate data. */
typedef struct knotd_qdata_extra {
zone_t *zone; /*!< Zone from which is answered. */
const zone_contents_t *contents; /*!< Zone contents from which is answered. */
list_t wildcards; /*!< Visited wildcards. */
list_t rrsigs; /*!< Section RRSIGs. */
uint8_t *opt_rr_pos; /*!< Place of the OPT RR in wire. */
/* Currently processed nodes. */
const zone_node_t *node, *encloser, *previous;
uint8_t cname_chain; /*!< Length of the CNAME chain so far. */
/* Extensions. */
void *ext;
void (*ext_cleanup)(knotd_qdata_t *); /*!< Extensions cleanup callback. */
void (*ext_finished)(knotd_qdata_t *, knot_pkt_t *, int); /*!< Optional postprocessing callback. */
} knotd_qdata_extra_t;
/*! \brief Visited wildcard node list. */
struct wildcard_hit {
node_t n;
const zone_node_t *node; /* Visited node. */
const zone_node_t *prev; /* Previous node from the SNAME. */
const knot_dname_t *sname; /* Name leading to this node. */
};
/*! \brief RRSIG info node list. */
struct rrsig_info {
node_t n;
knot_rrset_t synth_rrsig; /* Synthesized RRSIG. */
knot_rrinfo_t *rrinfo; /* RR info. */
};
/*!
* \brief Check current query against ACL.
*
* \param conf Configuration.
* \param action ACL action.
* \param qdata Query data.
* \return true if accepted, false if denied.
*/
bool process_query_acl_check(conf_t *conf, acl_action_t action,
knotd_qdata_t *qdata);
/*!
* \brief Verify current query transaction security and update query data.
*
* \param qdata
* \retval KNOT_EOK
* \retval KNOT_TSIG_EBADKEY
* \retval KNOT_TSIG_EBADSIG
* \retval KNOT_TSIG_EBADTIME
* \retval (other generic errors)
*/
int process_query_verify(knotd_qdata_t *qdata);
/*!
* \brief Sign current query using configured TSIG keys.
*
* \param pkt Outgoing message.
* \param qdata Query data.
*
* \retval KNOT_E*
*/
int process_query_sign_response(knot_pkt_t *pkt, knotd_qdata_t *qdata);
/*!
* \brief Puts RRSet to packet, will store its RRSIG for later use.
*
* \param pkt Packet to store RRSet into.
* \param qdata Query data structure.
* \param rr RRSet to be stored.
* \param rrsigs RRSIGs to be stored.
* \param compr_hint Compression hint.
* \param flags Flags.
*
* \return KNOT_E*
*/
int process_query_put_rr(knot_pkt_t *pkt, knotd_qdata_t *qdata,
const knot_rrset_t *rr, const knot_rrset_t *rrsigs,
uint16_t compr_hint, uint32_t flags);
/*!
* \brief Processes all global module protocol callbacks at given stage.
*
* \param params Query processing parameters.
* \param stage Processing stage (KNOTD_STAGE_PROTO_BEGIN or KNOTD_STAGE_PROTO_END).
*
* \return Resulting state.
*/
knotd_proto_state_t process_query_proto(knotd_qdata_params_t *params,
const knotd_stage_t stage);
|
