/* $OpenBSD: config.c,v 1.18 2005/05/11 15:12:35 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 <netinet/in.h> #include <arpa/nameser.h> #include <errno.h> #include <resolv.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 *); static u_int32_t maxid = 0; int host(const char *s, struct ntp_addr **hn) { 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); if (h == NULL) return (0); *hn = h; return (1); } 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; bzero(&hints, sizeof(hints)); hints.ai_family = PF_UNSPEC; hints.ai_socktype = SOCK_DGRAM; /* DUMMY */ error = getaddrinfo(s, NULL, &hints, &res0); if (error == EAI_AGAIN || error == EAI_NODATA || error == EAI_NONAME) return (0); if (error) { log_warnx("could not parse \"%s\": %s", s, gai_strerror(error)); return (-1); } for (res = res0; res && cnt < MAX_SERVERS_DNS; 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); } struct ntp_peer * new_peer(void) { struct ntp_peer *p; if ((p = calloc(1, sizeof(struct ntp_peer))) == NULL) fatal("conf_main server calloc"); p->id = ++maxid; return (p); }