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
|
/*
* netifd - network interface daemon
* Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <string.h>
#include <stdlib.h>
#include "utils.h"
#include <arpa/inet.h>
#include <netinet/in.h>
#ifdef __APPLE__
#include <libproc.h>
#endif
void
__vlist_simple_init(struct vlist_simple_tree *tree, int offset)
{
INIT_LIST_HEAD(&tree->list);
tree->version = 1;
tree->head_offset = offset;
}
void
vlist_simple_delete(struct vlist_simple_tree *tree, struct vlist_simple_node *node)
{
char *ptr;
list_del(&node->list);
ptr = (char *) node - tree->head_offset;
free(ptr);
}
void
vlist_simple_flush(struct vlist_simple_tree *tree)
{
struct vlist_simple_node *n, *tmp;
list_for_each_entry_safe(n, tmp, &tree->list, list) {
if ((n->version == tree->version || n->version == -1) &&
tree->version != -1)
continue;
vlist_simple_delete(tree, n);
}
}
void
vlist_simple_replace(struct vlist_simple_tree *dest, struct vlist_simple_tree *old)
{
struct vlist_simple_node *n, *tmp;
vlist_simple_update(dest);
list_for_each_entry_safe(n, tmp, &old->list, list) {
list_del(&n->list);
vlist_simple_add(dest, n);
}
vlist_simple_flush(dest);
}
void
vlist_simple_flush_all(struct vlist_simple_tree *tree)
{
tree->version = -1;
vlist_simple_flush(tree);
}
unsigned int
parse_netmask_string(const char *str, bool v6)
{
struct in_addr addr;
unsigned int ret;
char *err = NULL;
if (!strchr(str, '.')) {
ret = strtoul(str, &err, 0);
if (err && *err)
goto error;
return ret;
}
if (v6)
goto error;
if (inet_aton(str, &addr) != 1)
goto error;
return 32 - fls(~(ntohl(addr.s_addr)));
error:
return ~0;
}
bool
split_netmask(char *str, unsigned int *netmask, bool v6)
{
char *delim = strchr(str, '/');
if (delim) {
*(delim++) = 0;
*netmask = parse_netmask_string(delim, v6);
}
return true;
}
int
parse_ip_and_netmask(int af, const char *str, void *addr, unsigned int *netmask)
{
char *astr = alloca(strlen(str) + 1);
strcpy(astr, str);
if (!split_netmask(astr, netmask, af == AF_INET6))
return 0;
if (af == AF_INET6) {
if (*netmask > 128)
return 0;
} else {
if (*netmask > 32)
return 0;
}
return inet_pton(af, astr, addr);
}
char *
format_macaddr(uint8_t *mac)
{
static char str[sizeof("ff:ff:ff:ff:ff:ff ")];
snprintf(str, sizeof(str), "%02x:%02x:%02x:%02x:%02x:%02x",
mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
return str;
}
uint32_t
crc32_file(FILE *fp)
{
static uint32_t *crcvals = NULL;
if (!crcvals) {
crcvals = malloc(sizeof(*crcvals) * 256);
for (size_t i = 0; i < 256; ++i) {
uint32_t c = i;
for (size_t j = 0; j < 8; ++j)
c = (c & 1) ? (0xEDB88320 ^ (c >> 1)) : (c >> 1);
crcvals[i] = c;
}
}
uint8_t buf[1024];
size_t len;
uint32_t c = 0xFFFFFFFF;
do {
len = fread(buf, 1, sizeof(buf), fp);
for (size_t i = 0; i < len; ++i)
c = crcvals[(c ^ buf[i]) & 0xFF] ^ (c >> 8);
} while (len == sizeof(buf));
return c ^ 0xFFFFFFFF;
}
bool check_pid_path(int pid, const char *exe)
{
int proc_exe_len;
int exe_len = strlen(exe);
#ifdef __APPLE__
char proc_exe_buf[PROC_PIDPATHINFO_SIZE];
proc_exe_len = proc_pidpath(pid, proc_exe_buf, sizeof(proc_exe_buf));
#else
char proc_exe[32];
char *proc_exe_buf = alloca(exe_len);
sprintf(proc_exe, "/proc/%d/exe", pid);
proc_exe_len = readlink(proc_exe, proc_exe_buf, exe_len);
#endif
if (proc_exe_len != exe_len)
return false;
return !memcmp(exe, proc_exe_buf, exe_len);
}
static const char * const uci_validate_name[__BLOBMSG_TYPE_LAST] = {
[BLOBMSG_TYPE_STRING] = "string",
[BLOBMSG_TYPE_ARRAY] = "list(string)",
[BLOBMSG_TYPE_INT32] = "uinteger",
[BLOBMSG_TYPE_BOOL] = "bool",
};
const char*
uci_get_validate_string(const struct uci_blob_param_list *p, int i)
{
if (p->validate[i])
return p->validate[i];
else if (uci_validate_name[p->params[i].type])
return uci_validate_name[p->params[i].type];
return p->validate[BLOBMSG_TYPE_STRING];
}
|
