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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
/* Copyright (C) 2022 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 <stdbool.h>
#include "utils/common/params.h"
#include "utils/common/exec.h"
#include "utils/common/https.h"
#include "utils/common/quic.h"
#include "utils/common/sign.h"
#include "libknot/libknot.h"
#include "contrib/sockaddr.h"
#if USE_DNSTAP
# include "contrib/dnstap/reader.h"
# include "contrib/dnstap/writer.h"
#endif // USE_DNSTAP
/*! \brief Operation mode of kdig. */
typedef enum {
/*!< Standard 1-message query/reply. */
OPERATION_QUERY,
/*!< Zone transfer (AXFR or IXFR). */
OPERATION_XFR,
/*!< Dump dnstap file. */
OPERATION_LIST_DNSTAP,
} operation_t;
/*! \brief DNS header and EDNS flags. */
typedef struct {
/*!< Authoritative answer flag. */
bool aa_flag;
/*!< Truncated flag. */
bool tc_flag;
/*!< Recursion desired flag. */
bool rd_flag;
/*!< Recursion available flag. */
bool ra_flag;
/*!< Z flag. */
bool z_flag;
/*!< Authenticated data flag. */
bool ad_flag;
/*!< Checking disabled flag. */
bool cd_flag;
/*!< DNSSEC OK flag. */
bool do_flag;
} flags_t;
/*! \brief Basic parameters for DNS query. */
typedef struct query query_t; // Forward declaration due to configuration.
struct query {
/*!< List node (for list container). */
node_t n;
/*!< Reference to global config. */
const query_t *conf;
/*!< Name to query on. */
char *owner;
/*!< List of nameservers to query to. */
list_t servers;
/*!< Local interface (optional). */
srv_info_t *local;
/*!< Operation mode. */
operation_t operation;
/*!< Version of ip protocol to use. */
ip_t ip;
/*!< Protocol type (TCP, UDP) to use. */
protocol_t protocol;
/*!< Use TCP Fast Open. */
bool fastopen;
/*!< Keep TCP connection open. */
bool keepopen;
/*!< Port/service to connect to. */
char *port;
/*!< UDP buffer size (16unsigned + -1 uninitialized). */
int32_t udp_size;
/*!< Number of UDP retries. */
uint32_t retries;
/*!< Wait for network response in seconds (-1 means forever). */
int32_t wait;
/*!< Ignore truncated response. */
bool ignore_tc;
/*!< Class number (16unsigned + -1 uninitialized). */
int32_t class_num;
/*!< Type number (16unsigned + -1 uninitialized). */
int32_t type_num;
/*!< SOA serial for IXFR and NOTIFY (32unsigned + -1 uninitialized). */
int64_t serial;
/*!< NOTIFY query. */
bool notify;
/*!< Header flags. */
flags_t flags;
/*!< Output settings. */
style_t style;
/*!< IDN conversion. */
bool idn;
/*!< Query for NSID. */
bool nsid;
/*!< EDNS version (8unsigned + -1 uninitialized). */
int16_t edns;
/*!< EDNS client cookie. */
knot_edns_cookie_t cc;
/*!< EDNS server cookie. */
knot_edns_cookie_t sc;
/*!< Repeat query after BADCOOKIE. */
int badcookie;
/*!< EDNS0 padding (16unsigned + -1 ~ uninitialized, -2 ~ default, -3 ~ none). */
int32_t padding;
/*!< Query alignment with EDNS0 padding (0 ~ uninitialized). */
uint16_t alignment;
/*!< TLS parameters. */
tls_params_t tls;
/*!< HTTPS parameters. */
https_params_t https;
/*!< QUIC parameters. */
quic_params_t quic;
/*!< Transaction signature. */
knot_tsig_key_t tsig_key;
/*!< EDNS client subnet. */
knot_edns_client_subnet_t subnet;
/*!< Lits of custom EDNS options. */
list_t edns_opts;
/*!< PROXYv2 source and destination address. */
struct {
struct sockaddr_storage src;
struct sockaddr_storage dst;
} proxy;
#if USE_DNSTAP
/*!< Context for dnstap reader input. */
dt_reader_t *dt_reader;
/*!< Context for dnstap writer output. */
dt_writer_t *dt_writer;
#endif // USE_DNSTAP
};
/*! \brief EDNS option data. */
typedef struct {
/*! List node (for list container). */
node_t n;
/*!< OPTION-CODE field. */
uint16_t code;
/*!< OPTION-LENGTH field. */
uint16_t length;
/*!< OPTION-DATA field. */
uint8_t *data;
} ednsopt_t;
/*! \brief Settings for kdig. */
typedef struct {
/*!< Stop processing - just print help, version,... */
bool stop;
/*!< List of DNS queries to process. */
list_t queries;
/*!< Default settings for queries. */
query_t *config;
} kdig_params_t;
query_t *query_create(const char *owner, const query_t *config);
void query_free(query_t *query);
void complete_queries(list_t *queries, const query_t *conf);
ednsopt_t *ednsopt_create(uint16_t code, uint16_t length, uint8_t *data);
ednsopt_t *ednsopt_dup(const ednsopt_t *opt);
void ednsopt_free(ednsopt_t *opt);
void ednsopt_list_init(list_t *list);
void ednsopt_list_deinit(list_t *list);
int ednsopt_list_dup(list_t *dst, const list_t *src);
bool ednsopt_list_empty(const list_t *list);
int kdig_init(kdig_params_t *params);
int kdig_parse(kdig_params_t *params, int argc, char *argv[]);
void kdig_clean(kdig_params_t *params);
|
