155     register char *cp, **pp;  in res_init()  local
215     if (issetugid() == 0 && (cp = getenv("LOCALDOMAIN")) != NULL)  in res_init()
217     if ((cp = getenv("LOCALDOMAIN")) != NULL)  in res_init()
220         (void)strncpy(_res.defdname, cp, sizeof(_res.defdname) - 1);  in res_init()
231         cp = _res.defdname;  in res_init()
233         *pp++ = cp;  in res_init()
234         for (n = 0; *cp && pp < _res.dnsrch + MAXDNSRCH; cp++) {  in res_init()
235             if (*cp == '\n')    /* silly backwards compat */  in res_init()
237             else if (*cp == ' ' || *cp == '\t') {  in res_init()
238                 *cp = 0;  in res_init()
241                 *pp++ = cp;  in res_init()
247         while (*cp != '\0' && *cp != ' ' && *cp != '\t' && *cp != '\n')  in res_init()
248             cp++;  in res_init()
249         *cp = '\0';  in res_init()
268             cp = buf + sizeof("domain") - 1;  in res_init()
269             while (*cp == ' ' || *cp == '\t')  in res_init()
270                 cp++;  in res_init()
271             if ((*cp == '\0') || (*cp == '\n'))  in res_init()
273             strncpy(_res.defdname, cp, sizeof(_res.defdname) - 1);  in res_init()
275             if ((cp = strpbrk(_res.defdname, " \t\n")) != NULL)  in res_init()
276                 *cp = '\0';  in res_init()
284             cp = buf + sizeof("search") - 1;  in res_init()
285             while (*cp == ' ' || *cp == '\t')  in res_init()
286                 cp++;  in res_init()
287             if ((*cp == '\0') || (*cp == '\n'))  in res_init()
289             strncpy(_res.defdname, cp, sizeof(_res.defdname) - 1);  in res_init()
291             if ((cp = strchr(_res.defdname, '\n')) != NULL)  in res_init()
292                 *cp = '\0';  in res_init()
297             cp = _res.defdname;  in res_init()
299             *pp++ = cp;  in res_init()
300             for (n = 0; *cp && pp < _res.dnsrch + MAXDNSRCH; cp++) {  in res_init()
301                 if (*cp == ' ' || *cp == '\t') {  in res_init()
302                     *cp = 0;  in res_init()
305                     *pp++ = cp;  in res_init()
310             while (*cp != '\0' && *cp != ' ' && *cp != '\t')  in res_init()
311                 cp++;  in res_init()
312             *cp = '\0';  in res_init()
321             cp = buf + sizeof("nameserver") - 1;  in res_init()
322             while (*cp == ' ' || *cp == '\t')  in res_init()
323             cp++;  in res_init()
324             if ((*cp != '\0') && (*cp != '\n') && inet_aton(cp, &a)) {  in res_init()
337             cp = buf + sizeof("sortlist") - 1;  in res_init()
339             while (*cp == ' ' || *cp == '\t')  in res_init()
340                 cp++;  in res_init()
341             if (*cp == '\0' || *cp == '\n' || *cp == ';')  in res_init()
343             net = cp;  in res_init()
344             while (*cp && !ISSORTMASK(*cp) && *cp != ';' &&  in res_init()
345                    isascii(*cp) && !isspace(*cp))  in res_init()
346                 cp++;  in res_init()
347             n = *cp;  in res_init()
348             *cp = 0;  in res_init()
352                 *cp++ = (char)n;  in res_init()
353                 net = cp;  in res_init()
354                 while (*cp && *cp != ';' &&  in res_init()
355                     isascii(*cp) && !isspace(*cp))  in res_init()
356                     cp++;  in res_init()
357                 n = *cp;  in res_init()
358                 *cp = 0;  in res_init()
371             *cp = (char)n;  in res_init()
390         (cp = strchr(buf, '.')) != NULL)  in res_init()
391         strcpy(_res.defdname, cp + 1);  in res_init()
401         for (cp = _res.defdname; *cp; cp++)  in res_init()
402             dots += (*cp == '.');  in res_init()
404         cp = _res.defdname;  in res_init()
408             cp = strchr(cp, '.') + 1;    /* we know there is one */  in res_init()
409             *pp++ = cp;  in res_init()
430     else if ((cp = getenv("RES_OPTIONS")) != NULL)  in res_init()
431         res_setoptions(cp, "env");  in res_init()
445     char *cp = options;  in res_setoptions()  local
453     while (*cp) {  in res_setoptions()
455         while (*cp == ' ' || *cp == '\t')  in res_setoptions()
456             cp++;  in res_setoptions()
458         if (!strncmp(cp, "ndots:", sizeof("ndots:") - 1)) {  in res_setoptions()
459             i = atoi(cp + sizeof("ndots:") - 1);  in res_setoptions()
468         } else if (!strncmp(cp, "debug", sizeof("debug") - 1)) {  in res_setoptions()
477         } else if (!strncmp(cp, "inet6", sizeof("inet6") - 1)) {  in res_setoptions()
479         } else if (!strncmp(cp, "no_tld_query", sizeof("no_tld_query") - 1)) {  in res_setoptions()
485         while (*cp && *cp != ' ' && *cp != '\t')  in res_setoptions()
486             cp++;  in res_setoptions()