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
|
/* Copyright (c) 2017, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* \file hs_control.c
* \brief Contains control port event related code.
**/
#include "or.h"
#include "control.h"
#include "hs_common.h"
#include "hs_control.h"
#include "nodelist.h"
/* Send on the control port the "HS_DESC REQUESTED [...]" event.
*
* The onion_pk is the onion service public key, base64_blinded_pk is the
* base64 encoded blinded key for the service and hsdir_rs is the routerstatus
* object of the HSDir that this request is for. */
void
hs_control_desc_event_requested(const ed25519_public_key_t *onion_pk,
const char *base64_blinded_pk,
const routerstatus_t *hsdir_rs)
{
char onion_address[HS_SERVICE_ADDR_LEN_BASE32 + 1];
const uint8_t *hsdir_index;
const node_t *hsdir_node;
tor_assert(onion_pk);
tor_assert(base64_blinded_pk);
tor_assert(hsdir_rs);
hs_build_address(onion_pk, HS_VERSION_THREE, onion_address);
/* Get the node from the routerstatus object to get the HSDir index used for
* this request. We can't have a routerstatus entry without a node and we
* can't pick a node without an hsdir_index. */
hsdir_node = node_get_by_id(hsdir_rs->identity_digest);
tor_assert(hsdir_node);
tor_assert(hsdir_node->hsdir_index);
/* This is a fetch event. */
hsdir_index = hsdir_node->hsdir_index->fetch;
/* Trigger the event. */
control_event_hs_descriptor_requested(onion_address, REND_NO_AUTH,
hsdir_rs->identity_digest,
base64_blinded_pk,
hex_str((const char *) hsdir_index,
DIGEST256_LEN));
memwipe(onion_address, 0, sizeof(onion_address));
}
/* Send on the control port the "HS_DESC FAILED [...]" event.
*
* Using a directory connection identifier, the HSDir identity digest and a
* reason for the failure. None can be NULL. */
void
hs_control_desc_event_failed(const hs_ident_dir_conn_t *ident,
const char *hsdir_id_digest,
const char *reason)
{
char onion_address[HS_SERVICE_ADDR_LEN_BASE32 + 1];
char base64_blinded_pk[ED25519_BASE64_LEN + 1];
tor_assert(ident);
tor_assert(hsdir_id_digest);
tor_assert(reason);
/* Build onion address and encoded blinded key. */
IF_BUG_ONCE(ed25519_public_to_base64(base64_blinded_pk,
&ident->blinded_pk) < 0) {
return;
}
hs_build_address(&ident->identity_pk, HS_VERSION_THREE, onion_address);
control_event_hsv3_descriptor_failed(onion_address, base64_blinded_pk,
hsdir_id_digest, reason);
}
/* Send on the control port the "HS_DESC RECEIVED [...]" event.
*
* Using a directory connection identifier and the HSDir identity digest.
* None can be NULL. */
void
hs_control_desc_event_received(const hs_ident_dir_conn_t *ident,
const char *hsdir_id_digest)
{
char onion_address[HS_SERVICE_ADDR_LEN_BASE32 + 1];
char base64_blinded_pk[ED25519_BASE64_LEN + 1];
tor_assert(ident);
tor_assert(hsdir_id_digest);
/* Build onion address and encoded blinded key. */
IF_BUG_ONCE(ed25519_public_to_base64(base64_blinded_pk,
&ident->blinded_pk) < 0) {
return;
}
hs_build_address(&ident->identity_pk, HS_VERSION_THREE, onion_address);
control_event_hsv3_descriptor_received(onion_address, base64_blinded_pk,
hsdir_id_digest);
}
/* Send on the control port the "HS_DESC CREATED [...]" event.
*
* Using the onion address of the descriptor's service and the blinded public
* key of the descriptor as a descriptor ID. None can be NULL. */
void
hs_control_desc_event_created(const char *onion_address,
const ed25519_public_key_t *blinded_pk)
{
char base64_blinded_pk[ED25519_BASE64_LEN + 1];
tor_assert(onion_address);
tor_assert(blinded_pk);
/* Build base64 encoded blinded key. */
IF_BUG_ONCE(ed25519_public_to_base64(base64_blinded_pk, blinded_pk) < 0) {
return;
}
/* Version 3 doesn't use the replica number in its descriptor ID computation
* so we pass negative value so the control port subsystem can ignore it. */
control_event_hs_descriptor_created(onion_address, base64_blinded_pk, -1);
}
/* Send on the control port the "HS_DESC UPLOAD [...]" event.
*
* Using the onion address of the descriptor's service, the HSDir identity
* digest, the blinded public key of the descriptor as a descriptor ID and the
* HSDir index for this particular request. None can be NULL. */
void
hs_control_desc_event_upload(const char *onion_address,
const char *hsdir_id_digest,
const ed25519_public_key_t *blinded_pk,
const uint8_t *hsdir_index)
{
char base64_blinded_pk[ED25519_BASE64_LEN + 1];
tor_assert(onion_address);
tor_assert(hsdir_id_digest);
tor_assert(blinded_pk);
tor_assert(hsdir_index);
/* Build base64 encoded blinded key. */
IF_BUG_ONCE(ed25519_public_to_base64(base64_blinded_pk, blinded_pk) < 0) {
return;
}
control_event_hs_descriptor_upload(onion_address, hsdir_id_digest,
base64_blinded_pk,
hex_str((const char *) hsdir_index,
DIGEST256_LEN));
}
/* Send on the control port the "HS_DESC UPLOADED [...]" event.
*
* Using the directory connection identifier and the HSDir identity digest.
* None can be NULL. */
void
hs_control_desc_event_uploaded(const hs_ident_dir_conn_t *ident,
const char *hsdir_id_digest)
{
char onion_address[HS_SERVICE_ADDR_LEN_BASE32 + 1];
tor_assert(ident);
tor_assert(hsdir_id_digest);
hs_build_address(&ident->identity_pk, HS_VERSION_THREE, onion_address);
control_event_hs_descriptor_uploaded(hsdir_id_digest, onion_address);
}
|
