diff options
Diffstat (limited to 'hesiod/hesiod.c')
-rw-r--r-- | hesiod/hesiod.c | 102 |
1 files changed, 19 insertions, 83 deletions
diff --git a/hesiod/hesiod.c b/hesiod/hesiod.c index 657dabebc1..a93e13b348 100644 --- a/hesiod/hesiod.c +++ b/hesiod/hesiod.c @@ -1,6 +1,19 @@ -#if defined(LIBC_SCCS) && !defined(lint) -static const char rcsid[] = "$BINDId: hesiod.c,v 1.21 2000/02/28 14:51:08 vixie Exp $"; -#endif +/* Copyright (C) 1997-2018 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ /* * Copyright (c) 1996,1999 by Internet Software Consortium. @@ -46,24 +59,14 @@ static const char rcsid[] = "$BINDId: hesiod.c,v 1.21 2000/02/28 14:51:08 vixie #include "hesiod.h" #include "hesiod_p.h" -#undef DEF_RHS #define _PATH_HESIOD_CONF "/etc/hesiod.conf" /* Forward */ -int hesiod_init(void **context); -void hesiod_end(void *context); -char * hesiod_to_bind(void *context, const char *name, - const char *type); -char ** hesiod_resolve(void *context, const char *name, - const char *type); -void hesiod_free_list(void *context, char **list); - static int parse_config_file(struct hesiod_p *ctx, const char *filename); static char ** get_txt_records(struct hesiod_p *ctx, int class, const char *name); -static int init(struct hesiod_p *ctx); /* Public */ @@ -82,7 +85,6 @@ hesiod_init(void **context) { ctx->LHS = NULL; ctx->RHS = NULL; - ctx->res = NULL; /* Set default query classes. */ ctx->classes[0] = C_IN; ctx->classes[1] = C_HS; @@ -91,19 +93,7 @@ hesiod_init(void **context) { if (!configname) configname = _PATH_HESIOD_CONF; if (parse_config_file(ctx, configname) < 0) { -#ifdef DEF_RHS - /* - * Use compiled in defaults. - */ - ctx->LHS = malloc(strlen(DEF_LHS)+1); - ctx->RHS = malloc(strlen(DEF_RHS)+1); - if (ctx->LHS == 0 || ctx->RHS == 0) - goto cleanup; - strcpy(ctx->LHS, DEF_LHS); - strcpy(ctx->RHS, DEF_RHS); -#else goto cleanup; -#endif } /* * The default RHS can be overridden by an environment @@ -131,11 +121,6 @@ hesiod_init(void **context) { goto cleanup; } -#if 0 - if (res_ninit(ctx->res) < 0) - goto cleanup; -#endif - *context = ctx; return (0); @@ -152,12 +137,8 @@ hesiod_end(void *context) { struct hesiod_p *ctx = (struct hesiod_p *) context; int save_errno = errno; - if (ctx->res) - res_nclose(ctx->res); free(ctx->RHS); free(ctx->LHS); - if (ctx->res && ctx->free_res) - (*ctx->free_res)(ctx->res); free(ctx); __set_errno(save_errno); } @@ -232,10 +213,6 @@ hesiod_resolve(void *context, const char *name, const char *type) { if (bindname == NULL) return (NULL); - if (init(ctx) == -1) { - free(bindname); - return (NULL); - } retvec = get_txt_records(ctx, ctx->classes[0], bindname); @@ -365,13 +342,13 @@ get_txt_records(struct hesiod_p *ctx, int class, const char *name) { /* * Construct the query and send it. */ - n = res_nmkquery(ctx->res, QUERY, name, class, T_TXT, NULL, 0, + n = res_mkquery(QUERY, name, class, T_TXT, NULL, 0, NULL, qbuf, MAX_HESRESP); if (n < 0) { __set_errno(EMSGSIZE); return (NULL); } - n = res_nsend(ctx->res, qbuf, n, abuf, MAX_HESRESP); + n = res_send(qbuf, n, abuf, MAX_HESRESP); if (n < 0) { __set_errno(ECONNREFUSED); return (NULL); @@ -421,7 +398,7 @@ get_txt_records(struct hesiod_p *ctx, int class, const char *name) { cp += INT16SZ + INT32SZ; /* skip the ttl, too */ rr.dlen = ns_get16(cp); cp += INT16SZ; - if (cp + rr.dlen > eom) { + if (rr.dlen == 0 || cp + rr.dlen > eom) { __set_errno(EMSGSIZE); goto cleanup; } @@ -464,44 +441,3 @@ get_txt_records(struct hesiod_p *ctx, int class, const char *name) { free(list); return (NULL); } - -struct __res_state * -__hesiod_res_get(void *context) { - struct hesiod_p *ctx = context; - - if (!ctx->res) { - struct __res_state *res; - res = (struct __res_state *)calloc(1, sizeof *res); - if (res == NULL) - return (NULL); - __hesiod_res_set(ctx, res, free); - } - - return (ctx->res); -} - -void -__hesiod_res_set(void *context, struct __res_state *res, - void (*free_res)(void *)) { - struct hesiod_p *ctx = context; - - if (ctx->res && ctx->free_res) { - res_nclose(ctx->res); - (*ctx->free_res)(ctx->res); - } - - ctx->res = res; - ctx->free_res = free_res; -} - -static int -init(struct hesiod_p *ctx) { - - if (!ctx->res && !__hesiod_res_get(ctx)) - return (-1); - - if (__res_maybe_init (ctx->res, 0) == -1) - return (-1); - - return (0); -} |