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
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <arpa/inet.h>
#include <linux/if.h>
#include <netinet/ether.h>
#include "sd-ndisc.h"
#include "alloc-util.h"
#include "dhcp-lease-internal.h"
#include "extract-word.h"
#include "hexdecoct.h"
#include "log.h"
#include "network-internal.h"
#include "parse-util.h"
size_t serialize_in_addrs(FILE *f,
const struct in_addr *addresses,
size_t size,
bool *with_leading_space,
bool (*predicate)(const struct in_addr *addr)) {
assert(f);
assert(addresses);
size_t count = 0;
bool _space = false;
if (!with_leading_space)
with_leading_space = &_space;
for (size_t i = 0; i < size; i++) {
if (predicate && !predicate(&addresses[i]))
continue;
if (*with_leading_space)
fputc(' ', f);
fputs(IN4_ADDR_TO_STRING(&addresses[i]), f);
count++;
*with_leading_space = true;
}
return count;
}
int deserialize_in_addrs(struct in_addr **ret, const char *string) {
_cleanup_free_ struct in_addr *addresses = NULL;
int size = 0;
assert(ret);
assert(string);
for (;;) {
_cleanup_free_ char *word = NULL;
struct in_addr *new_addresses;
int r;
r = extract_first_word(&string, &word, NULL, 0);
if (r < 0)
return r;
if (r == 0)
break;
new_addresses = reallocarray(addresses, size + 1, sizeof(struct in_addr));
if (!new_addresses)
return -ENOMEM;
else
addresses = new_addresses;
r = inet_pton(AF_INET, word, &(addresses[size]));
if (r <= 0)
continue;
size++;
}
*ret = size > 0 ? TAKE_PTR(addresses) : NULL;
return size;
}
void serialize_in6_addrs(FILE *f, const struct in6_addr *addresses, size_t size, bool *with_leading_space) {
assert(f);
assert(addresses);
assert(size);
bool _space = false;
if (!with_leading_space)
with_leading_space = &_space;
for (size_t i = 0; i < size; i++) {
if (*with_leading_space)
fputc(' ', f);
fputs(IN6_ADDR_TO_STRING(&addresses[i]), f);
*with_leading_space = true;
}
}
int deserialize_in6_addrs(struct in6_addr **ret, const char *string) {
_cleanup_free_ struct in6_addr *addresses = NULL;
int size = 0;
assert(ret);
assert(string);
for (;;) {
_cleanup_free_ char *word = NULL;
struct in6_addr *new_addresses;
int r;
r = extract_first_word(&string, &word, NULL, 0);
if (r < 0)
return r;
if (r == 0)
break;
new_addresses = reallocarray(addresses, size + 1, sizeof(struct in6_addr));
if (!new_addresses)
return -ENOMEM;
else
addresses = new_addresses;
r = inet_pton(AF_INET6, word, &(addresses[size]));
if (r <= 0)
continue;
size++;
}
*ret = TAKE_PTR(addresses);
return size;
}
void serialize_dhcp_routes(FILE *f, const char *key, sd_dhcp_route **routes, size_t size) {
assert(f);
assert(key);
assert(routes);
assert(size);
fprintf(f, "%s=", key);
for (size_t i = 0; i < size; i++) {
struct in_addr dest, gw;
uint8_t length;
assert_se(sd_dhcp_route_get_destination(routes[i], &dest) >= 0);
assert_se(sd_dhcp_route_get_gateway(routes[i], &gw) >= 0);
assert_se(sd_dhcp_route_get_destination_prefix_length(routes[i], &length) >= 0);
fprintf(f, "%s,%s%s",
IN4_ADDR_PREFIX_TO_STRING(&dest, length),
IN4_ADDR_TO_STRING(&gw),
i < size - 1 ? " ": "");
}
fputs("\n", f);
}
int deserialize_dhcp_routes(struct sd_dhcp_route **ret, size_t *ret_size, const char *string) {
_cleanup_free_ struct sd_dhcp_route *routes = NULL;
size_t size = 0;
assert(ret);
assert(ret_size);
assert(string);
/* WORD FORMAT: dst_ip/dst_prefixlen,gw_ip */
for (;;) {
_cleanup_free_ char *word = NULL;
char *tok, *tok_end;
unsigned n;
int r;
r = extract_first_word(&string, &word, NULL, 0);
if (r < 0)
return r;
if (r == 0)
break;
if (!GREEDY_REALLOC(routes, size + 1))
return -ENOMEM;
tok = word;
/* get the subnet */
tok_end = strchr(tok, '/');
if (!tok_end)
continue;
*tok_end = '\0';
r = inet_aton(tok, &routes[size].dst_addr);
if (r == 0)
continue;
tok = tok_end + 1;
/* get the prefixlen */
tok_end = strchr(tok, ',');
if (!tok_end)
continue;
*tok_end = '\0';
r = safe_atou(tok, &n);
if (r < 0 || n > 32)
continue;
routes[size].dst_prefixlen = (uint8_t) n;
tok = tok_end + 1;
/* get the gateway */
r = inet_aton(tok, &routes[size].gw_addr);
if (r == 0)
continue;
size++;
}
*ret_size = size;
*ret = TAKE_PTR(routes);
return 0;
}
int serialize_dhcp_option(FILE *f, const char *key, const void *data, size_t size) {
_cleanup_free_ char *hex_buf = NULL;
assert(f);
assert(key);
assert(data);
hex_buf = hexmem(data, size);
if (!hex_buf)
return -ENOMEM;
fprintf(f, "%s=%s\n", key, hex_buf);
return 0;
}
|
