diff options
Diffstat (limited to 'third_party/heimdal/lib/roken/getipnodebyname.c')
-rw-r--r-- | third_party/heimdal/lib/roken/getipnodebyname.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/roken/getipnodebyname.c b/third_party/heimdal/lib/roken/getipnodebyname.c new file mode 100644 index 0000000..ee430c7 --- /dev/null +++ b/third_party/heimdal/lib/roken/getipnodebyname.c @@ -0,0 +1,83 @@ +/* + * Copyright (c) 1999 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <config.h> + +#include "roken.h" + +#ifndef HAVE_H_ERRNO +static int h_errno = NO_RECOVERY; +#endif + +/* + * lookup `name' (address family `af') in DNS and return a pointer + * to a malloced struct hostent or NULL. + */ + +ROKEN_LIB_FUNCTION struct hostent * ROKEN_LIB_CALL +rk_getipnodebyname(const char *name, int af, int flags, int *error_num) +{ + struct hostent *tmp; + +#ifdef HAVE_GETHOSTBYNAME2 + tmp = gethostbyname2 (name, af); +#else + if (af != AF_INET) { + *error_num = NO_ADDRESS; + return NULL; + } + tmp = gethostbyname (name); +#endif + if (tmp == NULL) { + switch (h_errno) { + case HOST_NOT_FOUND : + case TRY_AGAIN : + case NO_RECOVERY : + *error_num = h_errno; + break; + case NO_DATA : + *error_num = NO_ADDRESS; + break; + default : + *error_num = NO_RECOVERY; + break; + } + return NULL; + } + tmp = copyhostent (tmp); + if (tmp == NULL) { + *error_num = TRY_AGAIN; + return NULL; + } + return tmp; +} |