2 * netifd - network interface daemon
3 * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
18 #include <arpa/inet.h>
19 #include <netinet/in.h>
20 #include <sys/socket.h>
27 __vlist_simple_init(struct vlist_simple_tree
*tree
, int offset
)
29 INIT_LIST_HEAD(&tree
->list
);
31 tree
->head_offset
= offset
;
35 vlist_simple_delete(struct vlist_simple_tree
*tree
, struct vlist_simple_node
*node
)
39 list_del(&node
->list
);
40 ptr
= (char *) node
- tree
->head_offset
;
45 vlist_simple_flush(struct vlist_simple_tree
*tree
)
47 struct vlist_simple_node
*n
, *tmp
;
49 list_for_each_entry_safe(n
, tmp
, &tree
->list
, list
) {
50 if ((n
->version
== tree
->version
|| n
->version
== -1) &&
54 vlist_simple_delete(tree
, n
);
59 vlist_simple_replace(struct vlist_simple_tree
*dest
, struct vlist_simple_tree
*old
)
61 struct vlist_simple_node
*n
, *tmp
;
63 vlist_simple_update(dest
);
64 list_for_each_entry_safe(n
, tmp
, &old
->list
, list
) {
66 vlist_simple_add(dest
, n
);
68 vlist_simple_flush(dest
);
72 vlist_simple_flush_all(struct vlist_simple_tree
*tree
)
75 vlist_simple_flush(tree
);
79 parse_netmask_string(const char *str
, bool v6
)
85 if (!strchr(str
, '.')) {
86 ret
= strtoul(str
, &err
, 0);
96 if (inet_aton(str
, &addr
) != 1)
99 return 32 - fls(~(ntohl(addr
.s_addr
)));
106 split_netmask(char *str
, unsigned int *netmask
, bool v6
)
108 char *delim
= strchr(str
, '/');
113 *netmask
= parse_netmask_string(delim
, v6
);
119 parse_ip_and_netmask(int af
, const char *str
, void *addr
, unsigned int *netmask
)
121 char *astr
= alloca(strlen(str
) + 1);
124 if (!split_netmask(astr
, netmask
, af
== AF_INET6
))
127 if (af
== AF_INET6
) {
135 return inet_pton(af
, astr
, addr
);
139 format_macaddr(uint8_t *mac
)
141 static char str
[sizeof("ff:ff:ff:ff:ff:ff ")];
143 snprintf(str
, sizeof(str
), "%02x:%02x:%02x:%02x:%02x:%02x",
144 mac
[0], mac
[1], mac
[2], mac
[3], mac
[4], mac
[5]);
152 static uint32_t *crcvals
= NULL
;
154 crcvals
= malloc(sizeof(*crcvals
) * 256);
156 for (size_t i
= 0; i
< 256; ++i
) {
158 for (size_t j
= 0; j
< 8; ++j
)
159 c
= (c
& 1) ? (0xEDB88320 ^ (c
>> 1)) : (c
>> 1);
166 uint32_t c
= 0xFFFFFFFF;
169 len
= fread(buf
, 1, sizeof(buf
), fp
);
170 for (size_t i
= 0; i
< len
; ++i
)
171 c
= crcvals
[(c
^ buf
[i
]) & 0xFF] ^ (c
>> 8);
172 } while (len
== sizeof(buf
));
174 return c
^ 0xFFFFFFFF;
177 bool check_pid_path(int pid
, const char *exe
)
179 const char deleted
[] = " (deleted)";
180 const int deleted_len
= strlen(deleted
);
182 int exe_len
= strlen(exe
);
185 char proc_exe_buf
[PROC_PIDPATHINFO_SIZE
];
187 proc_exe_len
= proc_pidpath(pid
, proc_exe_buf
, sizeof(proc_exe_buf
));
190 char *proc_exe_buf
= alloca(exe_len
);
192 sprintf(proc_exe
, "/proc/%d/exe", pid
);
193 proc_exe_len
= readlink(proc_exe
, proc_exe_buf
, exe_len
);
196 if (proc_exe_len
== exe_len
)
197 return !memcmp(exe
, proc_exe_buf
, exe_len
);
198 else if (proc_exe_len
== exe_len
+ deleted_len
)
199 return !memcmp(exe
, proc_exe_buf
, exe_len
) &&
200 !memcmp(exe
+ exe_len
, deleted
, deleted_len
);
205 static const char * const uci_validate_name
[__BLOBMSG_TYPE_LAST
] = {
206 [BLOBMSG_TYPE_STRING
] = "string",
207 [BLOBMSG_TYPE_ARRAY
] = "list(string)",
208 [BLOBMSG_TYPE_INT32
] = "uinteger",
209 [BLOBMSG_TYPE_BOOL
] = "bool",
213 uci_get_validate_string(const struct uci_blob_param_list
*p
, int i
)
216 return p
->validate
[i
];
218 else if (uci_validate_name
[p
->params
[i
].type
])
219 return uci_validate_name
[p
->params
[i
].type
];
221 return p
->validate
[BLOBMSG_TYPE_STRING
];