4  * Copyright (c) 2003-2008 Henning Brauer <henning@openbsd.org>
68 	log_info("dns engine exiting");  in dns_shutdown()
82 	case -1:  in ypldap_dns()
91 	setproctitle("dns engine");  in ypldap_dns()
94 	if (setgroups(1, &pw->pw_gid) ||  in ypldap_dns()
95 	    setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) ||  in ypldap_dns()
96 	    setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid))  in ypldap_dns()
111 	env.sc_iev->events = EV_READ;  in ypldap_dns()
112 	env.sc_iev->data = &env;  in ypldap_dns()
113 	imsg_init(&env.sc_iev->ibuf, pipe_ntp[1]);  in ypldap_dns()
114 	env.sc_iev->handler = dns_dispatch_imsg;  in ypldap_dns()
115 	event_set(&env.sc_iev->ev, env.sc_iev->ibuf.fd, env.sc_iev->events,  in ypldap_dns()
116 	    env.sc_iev->handler, &env);  in ypldap_dns()
117 	event_add(&env.sc_iev->ev, NULL);  in ypldap_dns()
135 	struct imsgev		*iev = env->sc_iev;  in dns_dispatch_imsg()
136 	struct imsgbuf		*ibuf = &iev->ibuf;  in dns_dispatch_imsg()
143 		if ((n = imsg_read(ibuf)) == -1 && errno != EAGAIN)  in dns_dispatch_imsg()
149 		if ((n = msgbuf_write(&ibuf->w)) == -1 && errno != EAGAIN)  in dns_dispatch_imsg()
157 		if ((n = imsg_get(ibuf, &imsg)) == -1)  in dns_dispatch_imsg()
162 		switch (imsg.hdr.type) {  in dns_dispatch_imsg()
165 			if (imsg.hdr.len < 1 + IMSG_HEADER_SIZE)  in dns_dispatch_imsg()
167 			imsg.hdr.len -= 1 + IMSG_HEADER_SIZE;  in dns_dispatch_imsg()
168 			if (name[imsg.hdr.len] != '\0' ||  in dns_dispatch_imsg()
169 			    strlen(name) != imsg.hdr.len)  in dns_dispatch_imsg()
171 			if ((cnt = host_dns(name, &hn)) == -1)  in dns_dispatch_imsg()
174 			    imsg.hdr.peerid, 0,  in dns_dispatch_imsg()
182 					imsg_add(buf, &h->ss, sizeof(h->ss));  in dns_dispatch_imsg()
200 		event_del(&iev->ev);  in dns_dispatch_imsg()
223 		return (-1);  in host_dns()
226 	for (res = res0; res && cnt < MAX_SERVERS_DNS; res = res->ai_next) {  in host_dns()
227 		if (res->ai_family != AF_INET &&  in host_dns()
228 		    res->ai_family != AF_INET6)  in host_dns()
232 		h->ss.ss_family = res->ai_family;  in host_dns()
233 		if (res->ai_family == AF_INET) {  in host_dns()
234 			sa_in = (struct sockaddr_in *)&h->ss;  in host_dns()
235 			sa_in->sin_len = sizeof(struct sockaddr_in);  in host_dns()
236 			sa_in->sin_addr.s_addr = ((struct sockaddr_in *)  in host_dns()
237 			    res->ai_addr)->sin_addr.s_addr;  in host_dns()
239 			sa_in6 = (struct sockaddr_in6 *)&h->ss;  in host_dns()
240 			sa_in6->sin6_len = sizeof(struct sockaddr_in6);  in host_dns()
241 			memcpy(&sa_in6->sin6_addr, &((struct sockaddr_in6 *)  in host_dns()
242 			    res->ai_addr)->sin6_addr, sizeof(struct in6_addr));  in host_dns()