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/* $OpenBSD: config.c,v 1.28 2015/10/12 06:50:08 reyk Exp $ */ |
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/* |
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* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org> |
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* |
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* Permission to use, copy, modify, and distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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#include <sys/types.h> |
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#include <sys/socket.h> |
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#include <sys/stat.h> |
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#include <netinet/in.h> |
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#include <errno.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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#include "ntpd.h" |
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struct ntp_addr *host_v4(const char *); |
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struct ntp_addr *host_v6(const char *); |
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static u_int32_t maxid = 0; |
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static u_int32_t constraint_maxid = 0; |
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void |
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host(const char *s, struct ntp_addr **hn) |
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{ |
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struct ntp_addr *h = NULL; |
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if (!strcmp(s, "*")) |
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if ((h = calloc(1, sizeof(struct ntp_addr))) == NULL) |
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fatal(NULL); |
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/* IPv4 address? */ |
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if (h == NULL) |
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h = host_v4(s); |
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/* IPv6 address? */ |
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if (h == NULL) |
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h = host_v6(s); |
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if (h == NULL) |
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return; |
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*hn = h; |
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} |
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struct ntp_addr * |
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host_v4(const char *s) |
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{ |
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struct in_addr ina; |
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struct sockaddr_in *sa_in; |
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struct ntp_addr *h; |
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memset(&ina, 0, sizeof(struct in_addr)); |
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if (inet_pton(AF_INET, s, &ina) != 1) |
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return (NULL); |
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if ((h = calloc(1, sizeof(struct ntp_addr))) == NULL) |
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fatal(NULL); |
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sa_in = (struct sockaddr_in *)&h->ss; |
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sa_in->sin_len = sizeof(struct sockaddr_in); |
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sa_in->sin_family = AF_INET; |
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sa_in->sin_addr.s_addr = ina.s_addr; |
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return (h); |
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} |
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struct ntp_addr * |
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host_v6(const char *s) |
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{ |
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struct addrinfo hints, *res; |
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struct sockaddr_in6 *sa_in6; |
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struct ntp_addr *h = NULL; |
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memset(&hints, 0, sizeof(hints)); |
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hints.ai_family = AF_INET6; |
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hints.ai_socktype = SOCK_DGRAM; /*dummy*/ |
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hints.ai_flags = AI_NUMERICHOST; |
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if (getaddrinfo(s, "0", &hints, &res) == 0) { |
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if ((h = calloc(1, sizeof(struct ntp_addr))) == NULL) |
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fatal(NULL); |
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sa_in6 = (struct sockaddr_in6 *)&h->ss; |
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sa_in6->sin6_len = sizeof(struct sockaddr_in6); |
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sa_in6->sin6_family = AF_INET6; |
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memcpy(&sa_in6->sin6_addr, |
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&((struct sockaddr_in6 *)res->ai_addr)->sin6_addr, |
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sizeof(sa_in6->sin6_addr)); |
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sa_in6->sin6_scope_id = |
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((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id; |
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freeaddrinfo(res); |
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} |
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return (h); |
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} |
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void |
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host_dns_free(struct ntp_addr *hn) |
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{ |
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struct ntp_addr *h = hn, *tmp; |
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while (h) { |
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tmp = h; |
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h = h->next; |
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free(tmp); |
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} |
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} |
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int |
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host_dns(const char *s, struct ntp_addr **hn) |
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{ |
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struct addrinfo hints, *res0, *res; |
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int error, cnt = 0; |
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struct sockaddr_in *sa_in; |
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struct sockaddr_in6 *sa_in6; |
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struct ntp_addr *h, *hh = NULL; |
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memset(&hints, 0, sizeof(hints)); |
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hints.ai_family = PF_UNSPEC; |
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hints.ai_socktype = SOCK_DGRAM; /* DUMMY */ |
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/* ntpd MUST NOT use AI_ADDRCONFIG here */ |
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error = getaddrinfo(s, NULL, &hints, &res0); |
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if (error == EAI_AGAIN || error == EAI_NODATA || error == EAI_NONAME) |
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return (0); |
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if (error) { |
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log_warnx("could not parse \"%s\": %s", s, |
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gai_strerror(error)); |
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return (-1); |
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} |
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for (res = res0; res && cnt < MAX_SERVERS_DNS; res = res->ai_next) { |
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if (res->ai_family != AF_INET && |
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res->ai_family != AF_INET6) |
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continue; |
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if ((h = calloc(1, sizeof(struct ntp_addr))) == NULL) |
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fatal(NULL); |
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h->ss.ss_family = res->ai_family; |
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if (res->ai_family == AF_INET) { |
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sa_in = (struct sockaddr_in *)&h->ss; |
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sa_in->sin_len = sizeof(struct sockaddr_in); |
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sa_in->sin_addr.s_addr = ((struct sockaddr_in *) |
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res->ai_addr)->sin_addr.s_addr; |
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} else { |
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sa_in6 = (struct sockaddr_in6 *)&h->ss; |
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sa_in6->sin6_len = sizeof(struct sockaddr_in6); |
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memcpy(&sa_in6->sin6_addr, &((struct sockaddr_in6 *) |
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res->ai_addr)->sin6_addr, sizeof(struct in6_addr)); |
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} |
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h->next = hh; |
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hh = h; |
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cnt++; |
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} |
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freeaddrinfo(res0); |
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*hn = hh; |
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return (cnt); |
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} |
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struct ntp_peer * |
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new_peer(void) |
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{ |
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struct ntp_peer *p; |
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if ((p = calloc(1, sizeof(struct ntp_peer))) == NULL) |
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fatal("new_peer calloc"); |
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p->id = ++maxid; |
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return (p); |
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} |
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struct ntp_conf_sensor * |
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new_sensor(char *device) |
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{ |
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struct ntp_conf_sensor *s; |
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if ((s = calloc(1, sizeof(struct ntp_conf_sensor))) == NULL) |
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fatal("new_sensor calloc"); |
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if ((s->device = strdup(device)) == NULL) |
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fatal("new_sensor strdup"); |
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return (s); |
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} |
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struct constraint * |
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new_constraint(void) |
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{ |
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struct constraint *p; |
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if ((p = calloc(1, sizeof(struct constraint))) == NULL) |
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fatal("new_constraint calloc"); |
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p->id = ++constraint_maxid; |
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p->fd = -1; |
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return (p); |
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} |
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