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
|
/* $OpenBSD: unwind.h,v 1.36 2019/11/26 19:35:13 kn Exp $ */
/*
* Copyright (c) 2018 Florian Obser <florian@openbsd.org>
* Copyright (c) 2004 Esben Norby <norby@openbsd.org>
* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <event.h>
#include <imsg.h>
#include <stdint.h>
#ifndef nitems
#define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
#endif
#define CONF_FILE "/etc/unwind.conf"
#define UNWIND_SOCKET "/dev/unwind.sock"
#define UNWIND_USER "_unwind"
#define OPT_VERBOSE 0x00000001
#define OPT_VERBOSE2 0x00000002
#define OPT_NOACTION 0x00000004
#define ROOT_DNSKEY_TTL 172800 /* TTL from authority */
#define KSK2017 ". 172800 IN DNSKEY 257 3 8 AwEAAaz/tAm8yTn4Mfeh5eyI96WSVexTBAvkMgJzkKTOiW1vkIbzxeF3+/4RgWOq7HrxRixHlFlExOLAJr5emLvN7SWXgnLh4+B5xQlNVz8Og8kvArMtNROxVQuCaSnIDdD5LKyWbRd2n9WGe2R8PzgCmr3EgVLrjyBxWezF0jLHwVN8efS3rCj/EWgvIWgb9tarpVUDK/b58Da+sqqls3eNbuv7pr+eoZG+SrDK6nWeL3c6H5Apxz7LjVc1uTIdsIXxuOLYA4/ilBmSVIzuDWfdRUfhHdY6+cn8HFRm+2hM8AnXGXws9555KrUB5qihylGa8subX2Nn6UwNR1AkUTV74bU="
#define IMSG_DATA_SIZE(imsg) ((imsg).hdr.len - IMSG_HEADER_SIZE)
enum {
PROC_MAIN,
PROC_RESOLVER,
PROC_FRONTEND,
PROC_CAPTIVEPORTAL,
} uw_process;
static const char * const log_procnames[] = {
"main",
"resolver",
"frontend",
"captive portal",
};
enum uw_resolver_type {
UW_RES_RECURSOR,
UW_RES_DHCP,
UW_RES_ASR,
UW_RES_FORWARDER,
UW_RES_DOT,
UW_RES_NONE
};
static const char * const uw_resolver_type_str[] = {
"recursor",
"dhcp",
"stub",
"forwarder",
"DoT"
};
struct imsgev {
struct imsgbuf ibuf;
void (*handler)(int, short, void *);
struct event ev;
short events;
};
enum imsg_type {
IMSG_NONE,
IMSG_CTL_LOG_VERBOSE,
IMSG_CTL_RELOAD,
IMSG_CTL_STATUS,
IMSG_CTL_CAPTIVEPORTAL_INFO,
IMSG_RECONF_CONF,
IMSG_RECONF_CAPTIVE_PORTAL_HOST,
IMSG_RECONF_CAPTIVE_PORTAL_PATH,
IMSG_RECONF_CAPTIVE_PORTAL_EXPECTED_RESPONSE,
IMSG_RECONF_BLOCKLIST_FILE,
IMSG_RECONF_FORWARDER,
IMSG_RECONF_DOT_FORWARDER,
IMSG_RECONF_END,
IMSG_UDP4SOCK,
IMSG_UDP6SOCK,
IMSG_ROUTESOCK,
IMSG_CONTROLFD,
IMSG_STARTUP,
IMSG_STARTUP_DONE,
IMSG_SOCKET_IPC_FRONTEND,
IMSG_SOCKET_IPC_RESOLVER,
IMSG_SOCKET_IPC_CAPTIVEPORTAL,
IMSG_QUERY,
IMSG_ANSWER_HEADER,
IMSG_ANSWER,
IMSG_CTL_RESOLVER_INFO,
IMSG_CTL_RESOLVER_WHY_BOGUS,
IMSG_CTL_RESOLVER_HISTOGRAM,
IMSG_CTL_AUTOCONF_RESOLVER_INFO,
IMSG_CTL_END,
IMSG_CTL_RECHECK_CAPTIVEPORTAL,
IMSG_HTTPSOCK,
IMSG_CAPTIVEPORTAL_STATE,
IMSG_TAFD,
IMSG_NEW_TA,
IMSG_NEW_TAS_ABORT,
IMSG_NEW_TAS_DONE,
IMSG_NETWORK_CHANGED,
IMSG_CONNECT_CAPTIVE_PORTAL_HOST,
IMSG_BLFD,
IMSG_REPLACE_DNS,
};
struct uw_forwarder {
TAILQ_ENTRY(uw_forwarder) entry;
char name[1024]; /* XXX */
uint32_t if_index;
int src;
uint16_t port;
};
TAILQ_HEAD(uw_forwarder_head, uw_forwarder);
struct uw_conf {
struct uw_forwarder_head uw_forwarder_list;
struct uw_forwarder_head uw_dot_forwarder_list;
enum uw_resolver_type res_pref[UW_RES_NONE];
int res_pref_len;
char *captive_portal_host;
char *captive_portal_path;
char *captive_portal_expected_response;
int captive_portal_expected_status;
int captive_portal_auto;
char *blocklist_file;
int blocklist_log;
};
struct query_imsg {
uint64_t id;
char qname[255];
int t;
int c;
int err;
int bogus;
struct timespec tp;
};
extern uint32_t cmd_opts;
/* unwind.c */
void main_imsg_compose_frontend(int, pid_t, void *, uint16_t);
void main_imsg_compose_frontend_fd(int, pid_t, int);
void main_imsg_compose_resolver(int, pid_t, void *, uint16_t);
void main_imsg_compose_captiveportal(int, pid_t, void *, uint16_t);
void main_imsg_compose_captiveportal_fd(int, pid_t, int);
void merge_config(struct uw_conf *, struct uw_conf *);
void imsg_event_add(struct imsgev *);
int imsg_compose_event(struct imsgev *, uint16_t, uint32_t, pid_t,
int, void *, uint16_t);
void imsg_receive_config(struct imsg *, struct uw_conf **);
struct uw_conf *config_new_empty(void);
void config_clear(struct uw_conf *);
/* printconf.c */
void print_config(struct uw_conf *);
/* parse.y */
struct uw_conf *parse_config(char *);
int cmdline_symset(char *);
|
