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
|
/* $OpenBSD: config.c,v 1.9 2004/07/28 16:38:43 henning Exp $ */
/*
* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "ntpd.h"
struct ntp_addr *host_v4(const char *);
struct ntp_addr *host_v6(const char *);
int
host(const char *s, struct ntp_addr **hn)
{
struct ntp_addr *h = NULL;
int cnt = 1;
if (!strcmp(s, "*"))
if ((h = calloc(1, sizeof(struct ntp_addr))) == NULL)
fatal(NULL);
/* IPv4 address? */
if (h == NULL)
h = host_v4(s);
/* IPv6 address? */
if (h == NULL)
h = host_v6(s);
/* Hostname? */
if (h == NULL)
cnt = host_dns(s, &h);
*hn = h;
return (cnt);
}
struct ntp_addr *
host_v4(const char *s)
{
struct in_addr ina;
struct sockaddr_in *sa_in;
struct ntp_addr *h;
bzero(&ina, sizeof(struct in_addr));
if (inet_pton(AF_INET, s, &ina) != 1)
return (NULL);
if ((h = calloc(1, sizeof(struct ntp_addr))) == NULL)
fatal(NULL);
sa_in = (struct sockaddr_in *)&h->ss;
sa_in->sin_len = sizeof(struct sockaddr_in);
sa_in->sin_family = AF_INET;
sa_in->sin_addr.s_addr = ina.s_addr;
return (h);
}
struct ntp_addr *
host_v6(const char *s)
{
struct addrinfo hints, *res;
struct sockaddr_in6 *sa_in6;
struct ntp_addr *h = NULL;
bzero(&hints, sizeof(hints));
hints.ai_family = AF_INET6;
hints.ai_socktype = SOCK_DGRAM; /*dummy*/
hints.ai_flags = AI_NUMERICHOST;
if (getaddrinfo(s, "0", &hints, &res) == 0) {
if ((h = calloc(1, sizeof(struct ntp_addr))) == NULL)
fatal(NULL);
sa_in6 = (struct sockaddr_in6 *)&h->ss;
sa_in6->sin6_len = sizeof(struct sockaddr_in6);
sa_in6->sin6_family = AF_INET6;
memcpy(&sa_in6->sin6_addr,
&((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,
sizeof(sa_in6->sin6_addr));
sa_in6->sin6_scope_id =
((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
freeaddrinfo(res);
}
return (h);
}
int
host_dns(const char *s, struct ntp_addr **hn)
{
struct addrinfo hints, *res0, *res;
int error, cnt = 0;
struct sockaddr_in *sa_in;
struct sockaddr_in6 *sa_in6;
struct ntp_addr *h, *hh = NULL;
memset(&hints, 0, sizeof(hints));
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = SOCK_STREAM; /* DUMMY */
error = getaddrinfo(s, NULL, &hints, &res0);
if (error) {
log_warnx("could not parse \"%s\": %s", s,
gai_strerror(error));
if (error == EAI_AGAIN || error == EAI_NODATA)
return (0);
else
return (-1);
}
for (res = res0; res; res = res->ai_next) {
if (res->ai_family != AF_INET &&
res->ai_family != AF_INET6)
continue;
if ((h = calloc(1, sizeof(struct ntp_addr))) == NULL)
fatal(NULL);
h->ss.ss_family = res->ai_family;
if (res->ai_family == AF_INET) {
sa_in = (struct sockaddr_in *)&h->ss;
sa_in->sin_len = sizeof(struct sockaddr_in);
sa_in->sin_addr.s_addr = ((struct sockaddr_in *)
res->ai_addr)->sin_addr.s_addr;
} else {
sa_in6 = (struct sockaddr_in6 *)&h->ss;
sa_in6->sin6_len = sizeof(struct sockaddr_in6);
memcpy(&sa_in6->sin6_addr, &((struct sockaddr_in6 *)
res->ai_addr)->sin6_addr, sizeof(struct in6_addr));
}
h->next = hh;
hh = h;
cnt++;
}
freeaddrinfo(res0);
*hn = hh;
return (cnt);
}
|
