netresolv/resolv/res_init.c

178 	register char *cp, **pp;
272 		char buf[sizeof(statp->defdname)], *cp;
279 			cp = strchr(buf, '.');
280 			cp = (cp == NULL) ? buf : (cp + 1);
281 			(void)strlcpy(statp->defdname, cp,
288 	if ((cp = getenv("LOCALDOMAIN")) != NULL) {
289 		(void)strncpy(statp->defdname, cp, sizeof(statp->defdname) - 1);
300 		cp = statp->defdname;
302 		*pp++ = cp;
303 		for (n = 0; *cp && pp < statp->dnsrch + MAXDNSRCH; cp++) {
304 			if (*cp == '\n')	/*%< silly backwards compat */
306 			else if (*cp == ' ' || *cp == '\t') {
307 				*cp = 0;
310 				*pp++ = cp;
316 		while (*cp != '\0' && *cp != ' ' && *cp != '\t' && *cp != '\n')
317 			cp++;
318 		*cp = '\0';
342 		    cp = buf + sizeof("domain") - 1;
343 		    while (*cp == ' ' || *cp == '\t')
344 			    cp++;
345 		    if ((*cp == '\0') || (*cp == '\n'))
347 		    strncpy(statp->defdname, cp, sizeof(statp->defdname) - 1);
349 		    if ((cp = strpbrk(statp->defdname, " \t\n")) != NULL)
350 			    *cp = '\0';
358 		    cp = buf + sizeof("search") - 1;
359 		    while (*cp == ' ' || *cp == '\t')
360 			    cp++;
361 		    if ((*cp == '\0') || (*cp == '\n'))
363 		    strncpy(statp->defdname, cp, sizeof(statp->defdname) - 1);
365 		    if ((cp = strchr(statp->defdname, '\n')) != NULL)
366 			    *cp = '\0';
371 		    cp = statp->defdname;
373 		    *pp++ = cp;
374 		    for (n = 0; *cp && pp < statp->dnsrch + MAXDNSRCH; cp++) {
375 			    if (*cp == ' ' || *cp == '\t') {
376 				    *cp = 0;
379 				    *pp++ = cp;
384 		    while (*cp != '\0' && *cp != ' ' && *cp != '\t')
385 			    cp++;
386 		    *cp = '\0';
398 		    cp = buf + sizeof("nameserver") - 1;
399 		    while (*cp == ' ' || *cp == '\t')
400 			cp++;
401 		    cp[strcspn(cp, ";# \t\n")] = '\0';
402 		    if ((*cp != '\0') && (*cp != '\n')) {
408 			if (getaddrinfo(cp, sbuf, &hints, &ai) == 0 &&
430 		    cp = buf + sizeof("sortlist") - 1;
432 			while (*cp == ' ' || *cp == '\t')
433 			    cp++;
434 			if (*cp == '\0' || *cp == '\n' || *cp == ';')
436 			net = cp;
437 			while (*cp && !ISSORTMASK(*cp) && *cp != ';' &&
438 			       isascii(*cp) && !isspace((unsigned char)*cp))
439 				cp++;
440 			n = *cp;
441 			*cp = 0;
445 				*cp++ = n;
446 				net = cp;
447 				while (*cp && *cp != ';' &&
448 					isascii(*cp) &&
449 					!isspace((unsigned char)*cp))
450 				    cp++;
451 				n = *cp;
452 				*cp = 0;
465 			*cp = n;
497 	    (cp = strchr(buf, '.')) != NULL)
498 		strcpy(statp->defdname, cp + 1);
507 		for (cp = statp->defdname; *cp; cp++)
508 			dots += (*cp == '.');
510 		cp = statp->defdname;
514 			cp = strchr(cp, '.') + 1;    /*%< we know there is one */
515 			*pp++ = cp;
529 	if ((cp = getenv("RES_OPTIONS")) != NULL)
530 		res_setoptions(statp, cp, "env");
538 	const char *cp = options;
548 	while (*cp) {
550 		while (*cp == ' ' || *cp == '\t')
551 			cp++;
553 		if (!strncmp(cp, "ndots:", sizeof("ndots:") - 1)) {
554 			i = atoi(cp + sizeof("ndots:") - 1);
563 		} else if (!strncmp(cp, "timeout:", sizeof("timeout:") - 1)) {
564 			i = atoi(cp + sizeof("timeout:") - 1);
574 		} else if (!strncmp(cp, "retrans:", sizeof("retrans:") - 1)) {
580 			statp->retrans = atoi(cp + sizeof("retrans:") - 1);
581 		} else if (!strncmp(cp, "retry:", sizeof("retry:") - 1)){
587 			statp->retry = atoi(cp + sizeof("retry:") - 1);
589 		} else if (!strncmp(cp, "attempts:", sizeof("attempts:") - 1)){
590 			i = atoi(cp + sizeof("attempts:") - 1);
599 		} else if (!strncmp(cp, "debug", sizeof("debug") - 1)) {
608 		} else if (!strncmp(cp, "no_tld_query",
610 			   !strncmp(cp, "no-tld-query",
613 		} else if (!strncmp(cp, "inet6", sizeof("inet6") - 1)) {
616 		} else if (!strncmp(cp, "inet4", sizeof("inet4") - 1)) {
619 		} else if (!strncmp(cp, "rotate", sizeof("rotate") - 1)) {
621 		} else if (!strncmp(cp, "no-check-names",
624 		} else if (!strncmp(cp, "check-names",
629 		else if (!strncmp(cp, "edns0", sizeof("edns0") - 1)) {
633 		else if (!strncmp(cp, "dname", sizeof("dname") - 1)) {
636 		else if (!strncmp(cp, "nibble:", sizeof("nibble:") - 1)) {
639 			cp += sizeof("nibble:") - 1;
640 			j = MIN(strcspn(cp, " \t"), sizeof(ext->nsuffix) - 1);
641 			strncpy(ext->nsuffix, cp, j);
644 		else if (!strncmp(cp, "nibble2:", sizeof("nibble2:") - 1)) {
647 			cp += sizeof("nibble2:") - 1;
648 			j = MIN(strcspn(cp, " \t"), sizeof(ext->nsuffix2) - 1);
649 			strncpy(ext->nsuffix2, cp, j);
652 		else if (!strncmp(cp, "v6revmode:", sizeof("v6revmode:") - 1)) {
653 			cp += sizeof("v6revmode:") - 1;
655 			if (!strncmp(cp, "single", sizeof("single") - 1)) {
657 			} else if (!strncmp(cp, "both", sizeof("both") - 1)) {
667 		while (*cp && *cp != ' ' && *cp != '\t')
668 			cp++;