diff options
Diffstat (limited to 'resolv')
| -rw-r--r-- | resolv/res_debug.c | 5 | ||||
| -rw-r--r-- | resolv/res_init.c | 5 | ||||
| -rw-r--r-- | resolv/res_query.c | 14 | ||||
| -rw-r--r-- | resolv/resolv.h | 4 |
4 files changed, 19 insertions, 9 deletions
diff --git a/resolv/res_debug.c b/resolv/res_debug.c index f7996a71da..3daa44e273 100644 --- a/resolv/res_debug.c +++ b/resolv/res_debug.c @@ -189,7 +189,7 @@ do_section(const res_state statp, buf = malloc(buflen += 1024); if (buf == NULL) { fprintf(file, - ";; memory allocation failure\n"); + ";; memory allocation failure\n"); return; } continue; @@ -356,7 +356,7 @@ const struct res_sym __p_class_syms[] = { {C_HS, "HESIOD"}, {C_ANY, "ANY"}, {C_NONE, "NONE"}, - {C_IN, (char *)0} + {C_IN, (char *)0} }; libresolv_hidden_data_def (__p_class_syms) @@ -588,6 +588,7 @@ p_option(u_long option) { case RES_USEBSTRING: return "ip6-bytstring"; case RES_USE_EDNS0: return "edns0"; case RES_USE_DNSSEC: return "dnssec"; + case RES_NOTLDQUERY: return "no-tld-query"; /* XXX nonreentrant */ default: sprintf(nbuf, "?0x%lx?", (u_long)option); return (nbuf); diff --git a/resolv/res_init.c b/resolv/res_init.c index 74715f34e9..7588432b22 100644 --- a/resolv/res_init.c +++ b/resolv/res_init.c @@ -545,6 +545,11 @@ res_setoptions(res_state statp, const char *options, const char *source) { } else if (!strncmp(cp, "single-request", sizeof("single-request") - 1)) { statp->options |= RES_SNGLKUP; + } else if (!strncmp(cp, "no_tld_query", + sizeof("no_tld_query") - 1) || + !strncmp(cp, "no-tld-query", + sizeof("no-tld-query") - 1)) { + statp->options |= RES_NOTLDQUERY; } else { /* XXX - print a warning here? */ } diff --git a/resolv/res_query.c b/resolv/res_query.c index 5ff352e2fc..26daf0d87b 100644 --- a/resolv/res_query.c +++ b/resolv/res_query.c @@ -123,7 +123,7 @@ __libc_res_nquery(res_state statp, { HEADER *hp = (HEADER *) answer; int n, use_malloc = 0; - u_int oflags = statp->_flags; + u_int oflags = statp->_flags; size_t bufsize = (type == T_UNSPEC ? 2 : 1) * QUERYSIZE; u_char *buf = alloca (bufsize); @@ -210,7 +210,7 @@ __libc_res_nquery(res_state statp, if (statp->options & RES_DEBUG) printf(";; res_nquery: retry without EDNS0\n"); #endif - goto again; + goto again; } #ifdef DEBUG if (statp->options & RES_DEBUG) @@ -344,6 +344,7 @@ __libc_res_nsearch(res_state statp, int trailing_dot, ret, saved_herrno; int got_nodata = 0, got_servfail = 0, root_on_list = 0; int tried_as_is = 0; + int searched = 0; __set_errno (0); RES_SET_H_ERRNO(statp, HOST_NOT_FOUND); /* True if we never query. */ @@ -406,6 +407,7 @@ __libc_res_nsearch(res_state statp, for (domain = (const char * const *)statp->dnsrch; *domain && !done; domain++) { + searched = 1; if (domain[0][0] == '\0' || (domain[0][0] == '.' && domain[0][1] == '\0')) @@ -477,11 +479,11 @@ __libc_res_nsearch(res_state statp, } /* - * If the name has any dots at all, and no earlier 'as-is' query - * for the name, and "." is not on the search list, then try an as-is - * query now. + * f the query has not already been tried as is then try it + * unless RES_NOTLDQUERY is set and there were no dots. */ - if (dots && !(tried_as_is || root_on_list)) { + if ((dots || !searched || (statp->options & RES_NOTLDQUERY) == 0) + && !(tried_as_is || root_on_list)) { ret = __libc_res_nquerydomain(statp, name, NULL, class, type, answer, anslen, answerp, answerp2, nanswerp2, resplen2); diff --git a/resolv/resolv.h b/resolv/resolv.h index e49c29d2fe..ed15a702bf 100644 --- a/resolv/resolv.h +++ b/resolv/resolv.h @@ -102,7 +102,7 @@ typedef res_sendhookact (*res_send_rhook) (const struct sockaddr_in *__ns, # define RES_MAXTIME 65535 /* Infinity, in milliseconds. */ struct __res_state { - int retrans; /* retransmition time interval */ + int retrans; /* retransmition time interval */ int retry; /* number of times to retransmit */ u_long options; /* option flags - see below. */ int nscount; /* number of name servers */ @@ -219,6 +219,8 @@ struct res_sym { #define RES_SNGLKUPREOP 0x00400000 /* -"-, but open new socket for each request */ #define RES_USE_DNSSEC 0x00800000 /* use DNSSEC using OK bit in OPT */ +#define RES_NOTLDQUERY 0x01000000 /* Do not look up unqualified name + as a TLD. */ #define RES_DEFAULT (RES_RECURSE|RES_DEFNAMES|RES_DNSRCH|RES_NOIP6DOTINT) |