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/* $OpenBSD: config.c,v 1.7 2004/07/08 01:22:57 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 *);
struct ntp_addr *host_dns(const char *);
int
check_file_secrecy(int fd, const char *fname)
{
struct stat st;
if (fstat(fd, &st)) {
log_warn("cannot stat %s", fname);
return (-1);
}
if (st.st_uid != 0 && st.st_uid != getuid()) {
log_warnx("%s: owner not root or current user", fname);
return (-1);
}
if (st.st_mode & (S_IRWXG | S_IRWXO)) {
log_warnx("%s: group/world readable/writeable", fname);
return (-1);
}
return (0);
}
struct ntp_addr *
host(const char *s)
{
struct ntp_addr *h = NULL;
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)
h = host_dns(s);
return (h);
}
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);
}
struct ntp_addr *
host_dns(const char *s)
{
struct addrinfo hints, *res0, *res;
int error;
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)
return (NULL);
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;
}
freeaddrinfo(res0);
return (hh);
}
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