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
|
/* SPDX-License-Identifier: LGPL-2.1+ */
#include "sd-id128.h"
#include "alloc-util.h"
#include "arphrd-list.h"
#include "device-util.h"
#include "fd-util.h"
#include "network-util.h"
#include "siphash24.h"
#include "sparse-endian.h"
#include "string-table.h"
#include "strv.h"
bool network_is_online(void) {
_cleanup_free_ char *carrier_state = NULL, *addr_state = NULL;
int r;
r = sd_network_get_carrier_state(&carrier_state);
if (r < 0) /* if we don't know anything, we consider the system online */
return true;
r = sd_network_get_address_state(&addr_state);
if (r < 0) /* if we don't know anything, we consider the system online */
return true;
if (STR_IN_SET(carrier_state, "degraded-carrier", "carrier") &&
STR_IN_SET(addr_state, "routable", "degraded"))
return true;
return false;
}
static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = {
[LINK_OPERSTATE_MISSING] = "missing",
[LINK_OPERSTATE_OFF] = "off",
[LINK_OPERSTATE_NO_CARRIER] = "no-carrier",
[LINK_OPERSTATE_DORMANT] = "dormant",
[LINK_OPERSTATE_DEGRADED_CARRIER] = "degraded-carrier",
[LINK_OPERSTATE_CARRIER] = "carrier",
[LINK_OPERSTATE_DEGRADED] = "degraded",
[LINK_OPERSTATE_ENSLAVED] = "enslaved",
[LINK_OPERSTATE_ROUTABLE] = "routable",
};
DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState);
static const char* const link_carrier_state_table[_LINK_CARRIER_STATE_MAX] = {
[LINK_CARRIER_STATE_OFF] = "off",
[LINK_CARRIER_STATE_NO_CARRIER] = "no-carrier",
[LINK_CARRIER_STATE_DORMANT] = "dormant",
[LINK_CARRIER_STATE_DEGRADED_CARRIER] = "degraded-carrier",
[LINK_CARRIER_STATE_CARRIER] = "carrier",
[LINK_CARRIER_STATE_ENSLAVED] = "enslaved",
};
DEFINE_STRING_TABLE_LOOKUP(link_carrier_state, LinkCarrierState);
static const char* const link_address_state_table[_LINK_ADDRESS_STATE_MAX] = {
[LINK_ADDRESS_STATE_OFF] = "off",
[LINK_ADDRESS_STATE_DEGRADED] = "degraded",
[LINK_ADDRESS_STATE_ROUTABLE] = "routable",
};
DEFINE_STRING_TABLE_LOOKUP(link_address_state, LinkAddressState);
int parse_operational_state_range(const char *str, LinkOperationalStateRange *out) {
LinkOperationalStateRange range = { _LINK_OPERSTATE_INVALID, _LINK_OPERSTATE_INVALID };
_cleanup_free_ const char *min = NULL;
const char *p;
assert(str);
assert(out);
p = strchr(str, ':');
if (p) {
min = strndup(str, p - str);
if (!isempty(p + 1)) {
range.max = link_operstate_from_string(p + 1);
if (range.max < 0)
return -EINVAL;
}
} else
min = strdup(str);
if (!min)
return -ENOMEM;
if (!isempty(min)) {
range.min = link_operstate_from_string(min);
if (range.min < 0)
return -EINVAL;
}
/* Fail on empty strings. */
if (range.min == _LINK_OPERSTATE_INVALID && range.max == _LINK_OPERSTATE_INVALID)
return -EINVAL;
if (range.min == _LINK_OPERSTATE_INVALID)
range.min = LINK_OPERSTATE_MISSING;
if (range.max == _LINK_OPERSTATE_INVALID)
range.max = LINK_OPERSTATE_ROUTABLE;
if (range.min > range.max)
return -EINVAL;
*out = range;
return 0;
}
char *link_get_type_string(sd_device *device, unsigned short iftype) {
const char *t;
char *p;
if (device &&
sd_device_get_devtype(device, &t) >= 0 &&
!isempty(t))
return strdup(t);
t = arphrd_to_name(iftype);
if (!t)
return NULL;
p = strdup(t);
if (!p)
return NULL;
return ascii_strlower(p);
}
const char *net_get_name_persistent(sd_device *device) {
const char *name, *field;
assert(device);
/* fetch some persistent data unique (on this machine) to this device */
FOREACH_STRING(field, "ID_NET_NAME_ONBOARD", "ID_NET_NAME_SLOT", "ID_NET_NAME_PATH", "ID_NET_NAME_MAC")
if (sd_device_get_property_value(device, field, &name) >= 0)
return name;
return NULL;
}
#define HASH_KEY SD_ID128_MAKE(d3,1e,48,fa,90,fe,4b,4c,9d,af,d5,d7,a1,b1,2e,8a)
int net_get_unique_predictable_data(sd_device *device, bool use_sysname, uint64_t *result) {
size_t l, sz = 0;
const char *name;
int r;
uint8_t *v;
assert(device);
/* net_get_name_persistent() will return one of the device names based on stable information about
* the device. If this is not available, we fall back to using the actual device name. */
name = net_get_name_persistent(device);
if (!name && use_sysname)
(void) sd_device_get_sysname(device, &name);
if (!name)
return log_device_debug_errno(device, SYNTHETIC_ERRNO(ENODATA),
"No stable identifying information found");
log_device_debug(device, "Using \"%s\" as stable identifying information", name);
l = strlen(name);
sz = sizeof(sd_id128_t) + l;
v = newa(uint8_t, sz);
/* Fetch some persistent data unique to this machine */
r = sd_id128_get_machine((sd_id128_t*) v);
if (r < 0)
return r;
memcpy(v + sizeof(sd_id128_t), name, l);
/* Let's hash the machine ID plus the device name. We use
* a fixed, but originally randomly created hash key here. */
*result = htole64(siphash24(v, sz, HASH_KEY.bytes));
return 0;
}
|
