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
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
#include <stdlib.h>
#include <string.h>
#include <core.h>
#include <cr.h>
#include "dir.h"
#include "dir_srv.h"
static int dir_update(ECPDirList *list, ECPDirItem *item) {
int i;
for (i=0; i<list->count; i++) {
if (memcmp(&list->item[i].node.key_perma.public, &item->node.key_perma.public, sizeof(item->node.key_perma.public)) == 0) {
return ECP_OK;
}
}
if (list->count == ECP_MAX_DIR_ITEM) return ECP_ERR_SIZE;
list->item[list->count] = *item;
list->count++;
return ECP_OK;
}
ssize_t ecp_dir_parse(ECPDirList *list, unsigned char *buf, size_t buf_size) {
ECPDirItem item;
size_t rsize;
uint16_t count;
int i;
int rv;
if (buf_size < sizeof(uint16_t)) return ECP_ERR_SIZE;
count = \
(buf[0] << 8) | \
(buf[1]);
rsize = sizeof(uint16_t) + count * ECP_SIZE_DIR_ITEM;
if (buf_size < rsize) return ECP_ERR_SIZE;
buf += sizeof(uint16_t);
for (i=0; i<count; i++) {
ecp_dir_item_parse(&item, buf);
rv = dir_update(list, &item);
if (rv) return rv;
buf += ECP_SIZE_DIR_ITEM;
}
return rsize;
}
ssize_t ecp_dir_serialize(ECPDirList *list, unsigned char *buf, size_t buf_size) {
size_t rsize;
int i;
rsize = sizeof(uint16_t) + list->count * ECP_SIZE_DIR_ITEM;
if (buf_size < rsize) return ECP_ERR_SIZE;
buf[0] = (list->count & 0xFF00) >> 8;
buf[1] = (list->count & 0x00FF);
buf += sizeof(uint16_t);
for (i=0; i<list->count; i++) {
ecp_dir_item_serialize(&list->item[i], buf);
buf += ECP_SIZE_DIR_ITEM;
}
return rsize;
}
void ecp_dir_item_parse(ECPDirItem *item, unsigned char *buf) {
ECPDHPub *key;
ecp_tr_addr_t *addr;
key = &item->node.key_perma;
addr = &item->node.addr;
memcpy(&key->public, buf, sizeof(key->public));
buf += sizeof(key->public);
memcpy(&addr->host, buf, sizeof(addr->host));
buf += sizeof(addr->host);
addr->port = \
(buf[0] << 8) | \
(buf[1]);
buf += sizeof(uint16_t);
item->capabilities = \
(buf[0] << 8) | \
(buf[1]);
buf += sizeof(uint16_t);
}
void ecp_dir_item_serialize(ECPDirItem *item, unsigned char *buf) {
ECPDHPub *key;
ecp_tr_addr_t *addr;
key = &item->node.key_perma;
addr = &item->node.addr;
memcpy(buf, &key->public, sizeof(key->public));
buf += sizeof(key->public);
memcpy(buf, &addr->host, sizeof(addr->host));
buf += sizeof(addr->host);
buf[0] = (addr->port & 0xFF00) >> 8;
buf[1] = (addr->port & 0x00FF);
buf += sizeof(uint16_t);
buf[0] = (item->capabilities & 0xFF00) >> 8;
buf[1] = (item->capabilities & 0x00FF);
buf += sizeof(uint16_t);
}
ssize_t ecp_dir_handle(ECPConnection *conn, unsigned char *msg, size_t msg_size, ECP2Buffer *b) {
ecp_dir_handler_t handler;
handler = ecp_get_dir_handler(conn);
if (handler) {
return handler(conn, msg, msg_size, b);
} else {
return ECP_ERR_HANDLER;
}
}
int ecp_dir_handle_open(ECPConnection *conn, ECP2Buffer *b) {
ssize_t rv;
if (ecp_conn_is_inb(conn)) return ECP_OK;
#ifdef ECP_WITH_DIRSRV
rv = ecp_dir_send_upd(conn);
#else
rv = ecp_dir_send_req(conn);
#endif
if (rv < 0) return rv;
return ECP_OK;
}
ssize_t ecp_dir_handle_msg(ECPConnection *conn, ecp_seq_t seq, unsigned char mtype, unsigned char *msg, size_t msg_size, ECP2Buffer *b) {
switch (mtype) {
#ifdef ECP_WITH_DIRSRV
case ECP_MTYPE_DIR_UPD: {
return ecp_dir_handle_upd(conn, msg, msg_size);
}
case ECP_MTYPE_DIR_REQ: {
return ecp_dir_handle_req(conn, msg, msg_size);
}
#endif
case ECP_MTYPE_DIR_REP: {
#ifdef ECP_WITH_DIRSRV
return ecp_dir_handle_rep(conn, msg, msg_size);
#else
return ecp_dir_handle(conn, msg, msg_size, b);
#endif
}
default:
return ECP_ERR_MTYPE;
}
}
static ssize_t _dir_send_req(ECPConnection *conn, ECPTimerItem *ti) {
ECPBuffer packet;
ECPBuffer payload;
unsigned char pkt_buf[ECP_SIZE_PKT_BUF(0, ECP_MTYPE_DIR_REQ, conn)];
unsigned char pld_buf[ECP_SIZE_PLD_BUF(0, ECP_MTYPE_DIR_REQ, conn)];
packet.buffer = pkt_buf;
packet.size = sizeof(pkt_buf);
payload.buffer = pld_buf;
payload.size = sizeof(pld_buf);
ecp_pld_set_type(payload.buffer, payload.size, ECP_MTYPE_DIR_REQ);
return ecp_pld_send_wtimer(conn, &packet, &payload, ECP_SIZE_PLD(0, ECP_MTYPE_DIR_REQ), 0, ti);
}
ssize_t ecp_dir_send_req(ECPConnection *conn) {
return ecp_timer_send(conn, _dir_send_req, ECP_MTYPE_DIR_REP, ECP_SEND_TRIES, ECP_SEND_TIMEOUT);
}
int ecp_dir_get(ECPConnection *conn, ECPSocket *sock, ECPNode *node) {
int rv;
ssize_t _rv;
rv = ecp_conn_create(conn, sock, ECP_CTYPE_DIR);
if (rv) return rv;
rv = ecp_conn_open(conn, node);
if (rv) return rv;
return ECP_OK;
}
|
