172 res_ourserver_p(const res_state statp, const struct sockaddr *sa) {  in res_ourserver_p()  argument
180 		for (ns = 0;  ns < statp->nscount;  ns++) {  in res_ourserver_p()
181 			srv = (struct sockaddr_in *)get_nsaddr(statp, ns);  in res_ourserver_p()
190 		if (EXT(statp).ext == NULL)  in res_ourserver_p()
193 		for (ns = 0;  ns < statp->nscount;  ns++) {  in res_ourserver_p()
194 			srv6 = (struct sockaddr_in6 *)get_nsaddr(statp, ns);  in res_ourserver_p()
303 res_nsend(res_state statp,  in res_nsend()  argument
314 	if (statp->nscount == 0 || EXT(statp).ext == NULL) {  in res_nsend()
322 	DprintQ((statp->options & RES_DEBUG) || (statp->pfcode & RES_PRF_QUERY),  in res_nsend()
324 	v_circuit = (statp->options & RES_USEVC) || buflen > PACKETSZ;  in res_nsend()
332 	if (EXT(statp).nscount != 0) {  in res_nsend()
337 		if (EXT(statp).nscount != statp->nscount)  in res_nsend()
340 			for (ns = 0; ns < statp->nscount; ns++) {  in res_nsend()
341 				if (statp->nsaddr_list[ns].sin_family &&  in res_nsend()
342 				    !sock_eq((struct sockaddr *)&statp->nsaddr_list[ns],  in res_nsend()
343 					     (struct sockaddr *)&EXT(statp).ext->nsaddrs[ns])) {  in res_nsend()
348 				if (EXT(statp).nssocks[ns] == -1)  in res_nsend()
351 				if (getpeername(EXT(statp).nssocks[ns],  in res_nsend()
357 				    get_nsaddr(statp, ns))) {  in res_nsend()
363 			res_nclose(statp);  in res_nsend()
364 			EXT(statp).nscount = 0;  in res_nsend()
371 	if (EXT(statp).nscount == 0) {  in res_nsend()
372 		for (ns = 0; ns < statp->nscount; ns++) {  in res_nsend()
373 			EXT(statp).nstimes[ns] = RES_MAXTIME;  in res_nsend()
374 			EXT(statp).nssocks[ns] = -1;  in res_nsend()
375 			if (!statp->nsaddr_list[ns].sin_family)  in res_nsend()
377 			EXT(statp).ext->nsaddrs[ns].sin =  in res_nsend()
378 				 statp->nsaddr_list[ns];  in res_nsend()
380 		EXT(statp).nscount = statp->nscount;  in res_nsend()
387 	if ((statp->options & RES_ROTATE) != 0U &&  in res_nsend()
388 	    (statp->options & RES_BLAST) == 0U) {  in res_nsend()
391 		int lastns = statp->nscount - 1;  in res_nsend()
395 		if (EXT(statp).ext != NULL)  in res_nsend()
396 			inu = EXT(statp).ext->nsaddrs[0];  in res_nsend()
397 		ina = statp->nsaddr_list[0];  in res_nsend()
398 		fd = EXT(statp).nssocks[0];  in res_nsend()
399 		nstime = EXT(statp).nstimes[0];  in res_nsend()
401 			if (EXT(statp).ext != NULL)  in res_nsend()
402 				EXT(statp).ext->nsaddrs[ns] =  in res_nsend()
403 					EXT(statp).ext->nsaddrs[ns + 1];  in res_nsend()
404 			statp->nsaddr_list[ns] = statp->nsaddr_list[ns + 1];  in res_nsend()
405 			EXT(statp).nssocks[ns] = EXT(statp).nssocks[ns + 1];  in res_nsend()
406 			EXT(statp).nstimes[ns] = EXT(statp).nstimes[ns + 1];  in res_nsend()
408 		if (EXT(statp).ext != NULL)  in res_nsend()
409 			EXT(statp).ext->nsaddrs[lastns] = inu;  in res_nsend()
410 		statp->nsaddr_list[lastns] = ina;  in res_nsend()
411 		EXT(statp).nssocks[lastns] = fd;  in res_nsend()
412 		EXT(statp).nstimes[lastns] = nstime;  in res_nsend()
418 	for (tries = 0; tries < statp->retry; tries++) {  in res_nsend()
419 	    for (ns = 0; ns < statp->nscount; ns++) {  in res_nsend()
422 		nsap = get_nsaddr(statp, ns);  in res_nsend()
424 		statp->_flags &= ~RES_F_LASTMASK;  in res_nsend()
425 		statp->_flags |= (ns << RES_F_LASTSHIFT);  in res_nsend()
427 		if (statp->qhook) {  in res_nsend()
433 				act = (*statp->qhook)(&nsap, &buf, &buflen,  in res_nsend()
440 					res_nclose(statp);  in res_nsend()
457 		Dprint(((statp->options & RES_DEBUG) &&  in res_nsend()
466 			tries = statp->retry;  in res_nsend()
467 			n = send_vc(statp, buf, buflen, ans, anssiz, &terrno,  in res_nsend()
476 			n = send_dg(statp, buf, buflen, ans, anssiz, &terrno,  in res_nsend()
487 		Dprint((statp->options & RES_DEBUG) ||  in res_nsend()
488 		       ((statp->pfcode & RES_PRF_REPLY) &&  in res_nsend()
489 			(statp->pfcode & RES_PRF_HEAD1)),  in res_nsend()
492 		DprintQ((statp->options & RES_DEBUG) ||  in res_nsend()
493 			(statp->pfcode & RES_PRF_REPLY),  in res_nsend()
502 		if ((v_circuit && (statp->options & RES_USEVC) == 0U) ||  in res_nsend()
503 		    (statp->options & RES_STAYOPEN) == 0U) {  in res_nsend()
504 			res_nclose(statp);  in res_nsend()
506 		if (statp->rhook) {  in res_nsend()
512 				act = (*statp->rhook)(nsap, buf, buflen,  in res_nsend()
520 					res_nclose(statp);  in res_nsend()
539 	res_nclose(statp);  in res_nsend()
549 	res_nclose(statp);  in res_nsend()
578 get_nsaddr(statp, n)  in get_nsaddr()  argument
579 	res_state statp;  in get_nsaddr()
583 	if (!statp->nsaddr_list[n].sin_family && EXT(statp).ext) {
589 		return (struct sockaddr *)(void *)&EXT(statp).ext->nsaddrs[n];
596 		return (struct sockaddr *)(void *)&statp->nsaddr_list[n];
601 send_vc(res_state statp,  in send_vc()  argument
618 	nsap = get_nsaddr(statp, ns);  in send_vc()
626 	if (statp->_vcsock >= 0 && (statp->_flags & RES_F_VC) != 0) {  in send_vc()
630 		if (getpeername(statp->_vcsock,  in send_vc()
633 			res_nclose(statp);  in send_vc()
634 			statp->_flags &= ~RES_F_VC;  in send_vc()
638 	if (statp->_vcsock < 0 || (statp->_flags & RES_F_VC) == 0) {  in send_vc()
639 		if (statp->_vcsock >= 0)  in send_vc()
640 			res_nclose(statp);  in send_vc()
642 		statp->_vcsock = socket(nsap->sa_family, SOCK_STREAM, 0);  in send_vc()
643 		if (statp->_vcsock > highestFD) {  in send_vc()
644 			res_nclose(statp);  in send_vc()
647 		if (statp->_vcsock < 0) {  in send_vc()
654 				Perror(statp, stderr, "socket(vc)", errno);  in send_vc()
658 				Perror(statp, stderr, "socket(vc)", errno);  in send_vc()
670 		(void)setsockopt(statp->_vcsock, SOL_SOCKET, SO_NOSIGPIPE, &on,  in send_vc()
690 			conn_tmo = statp->retrans * 2000; /* mSec */  in send_vc()
691 			(void)setsockopt(statp->_vcsock, IPPROTO_TCP,  in send_vc()
697 		if (connect(statp->_vcsock, nsap, nsaplen) < 0) {  in send_vc()
699 			Aerror(statp, stderr, "connect/vc", errno, nsap,  in send_vc()
701 			res_nclose(statp);  in send_vc()
704 		statp->_flags |= RES_F_VC;  in send_vc()
714 	if (writev(statp->_vcsock, iov, 2) != (INT16SZ + buflen)) {  in send_vc()
716 		Perror(statp, stderr, "write failed", errno);  in send_vc()
717 		res_nclose(statp);  in send_vc()
726 	while ((n = read(statp->_vcsock, (char *)cp, (int)len)) > 0) {  in send_vc()
733 		Perror(statp, stderr, "read failed", errno);  in send_vc()
734 		res_nclose(statp);  in send_vc()
746 			res_nclose(statp);  in send_vc()
749 		res_nclose(statp);  in send_vc()
754 		Dprint(statp->options & RES_DEBUG,  in send_vc()
765 		Dprint(statp->options & RES_DEBUG,  in send_vc()
768 		res_nclose(statp);  in send_vc()
772 	while (len != 0 && (n = read(statp->_vcsock, (char *)cp, (int)len)) > 0){  in send_vc()
778 		Perror(statp, stderr, "read(vc)", errno);  in send_vc()
779 		res_nclose(statp);  in send_vc()
791 			n = read(statp->_vcsock, junk,  in send_vc()
807 		DprintQ((statp->options & RES_DEBUG) ||  in send_vc()
808 			(statp->pfcode & RES_PRF_REPLY),  in send_vc()
822 send_dg(res_state statp, const u_char *buf, int buflen, u_char *ans,  in send_dg()  argument
841 	nsap = get_nsaddr(statp, ns);  in send_dg()
843 	if (EXT(statp).nssocks[ns] == -1) {  in send_dg()
844 		EXT(statp).nssocks[ns] = socket(nsap->sa_family, SOCK_DGRAM, 0);  in send_dg()
845 		if (EXT(statp).nssocks[ns] > highestFD) {  in send_dg()
846 			res_nclose(statp);  in send_dg()
849 		if (EXT(statp).nssocks[ns] < 0) {  in send_dg()
856 				Perror(statp, stderr, "socket(dg)", errno);  in send_dg()
860 				Perror(statp, stderr, "socket(dg)", errno);  in send_dg()
876 		if (connect(EXT(statp).nssocks[ns], nsap, nsaplen) < 0) {  in send_dg()
877 			Aerror(statp, stderr, "connect(dg)", errno, nsap,  in send_dg()
879 			res_nclose(statp);  in send_dg()
883 		Dprint(statp->options & RES_DEBUG,  in send_dg()
886 	s = EXT(statp).nssocks[ns];  in send_dg()
889 		Perror(statp, stderr, "send", errno);  in send_dg()
890 		res_nclose(statp);  in send_dg()
896 		Aerror(statp, stderr, "sendto", errno, nsap, nsaplen);  in send_dg()
897 		res_nclose(statp);  in send_dg()
905 	seconds = (statp->retrans << tries);  in send_dg()
907 		seconds /= statp->nscount;  in send_dg()
937 		Dprint(statp->options & RES_DEBUG, (stdout, ";; timeout\n"));  in send_dg()
945 		Perror(statp, stderr, "select", errno);  in send_dg()
947 		Perror(statp, stderr, "poll", errno);  in send_dg()
949 		res_nclose(statp);  in send_dg()
957 		Perror(statp, stderr, "recvfrom", errno);  in send_dg()
958 		res_nclose(statp);  in send_dg()
966 		Dprint(statp->options & RES_DEBUG,  in send_dg()
970 		res_nclose(statp);  in send_dg()
979 		DprintQ((statp->options & RES_DEBUG) ||  in send_dg()
980 			(statp->pfcode & RES_PRF_REPLY),  in send_dg()
985 	if (!(statp->options & RES_INSECURE1) &&  in send_dg()
986 	    !res_ourserver_p(statp, (struct sockaddr *)&from)) {  in send_dg()
992 		DprintQ((statp->options & RES_DEBUG) ||  in send_dg()
993 			(statp->pfcode & RES_PRF_REPLY),  in send_dg()
999 	if (anhp->rcode == FORMERR && (statp->options & RES_USE_EDNS0) != 0U) {  in send_dg()
1005 		DprintQ(statp->options & RES_DEBUG,  in send_dg()
1009 		statp->_flags |= RES_F_EDNS0ERR;  in send_dg()
1010 		res_nclose(statp);  in send_dg()
1014 	if (!(statp->options & RES_INSECURE2) &&  in send_dg()
1022 		DprintQ((statp->options & RES_DEBUG) ||  in send_dg()
1023 			(statp->pfcode & RES_PRF_REPLY),  in send_dg()
1031 		DprintQ(statp->options & RES_DEBUG,  in send_dg()
1034 		res_nclose(statp);  in send_dg()
1036 		if (!statp->pfcode)  in send_dg()
1039 	if (!(statp->options & RES_IGNTC) && anhp->tc) {  in send_dg()
1044 		Dprint(statp->options & RES_DEBUG,  in send_dg()
1047 		res_nclose(statp);  in send_dg()
1058 Aerror(const res_state statp, FILE *file, const char *string, int error,  in Aerror()  argument
1067 	if ((statp->options & RES_DEBUG) != 0U) {  in Aerror()
1082 Perror(const res_state statp, FILE *file, const char *string, int error) {  in Perror()  argument
1085 	if ((statp->options & RES_DEBUG) != 0U)  in Perror()