NAME

       val_res_query(), val_res_search() - DNSSEC-validated resolution of DNS queries

SYNOPSIS

         #include <validator.h>

         int val_res_query(const val_context_t *ctx,
                           const char *dname,
                           int class,
                           int type,
                           unsigned char *answer,
                           int anslen,
                           val_status_t *val_status);

         int val_res_search(val_context_t * ctx,
                   const char *dname,
                   int class_h,
                   int type,
                   unsigned char * answer,
                   int anslen,
                   val_status_t * val_status);

DESCRIPTION

       The val_res_query() function performs DNSSEC validation of DNS queries.  It is a DNSSEC-aware substitute
       for the res_query(3) legacy function.  val_res_search() performs an operation similar to val_res_query().
       In addition, it uses the search paths specified within the /etc/resolv.conf file to create the fully
       qualified domain name.  val_res_search() is a DNSSEC-aware substitute for the res_search(3) function.

       The ctx parameter is the validator context and can be set to NULL for default settings.  More information
       about this field can be found in libval(3).

       The dname parameter specifies the domain name, class specifies the DNS class and type specifies the DNS
       type.

       The validation status values for val_res_query() and val_res_search() functions are returned in their
       respective val_status fields.  p_val_status() returns a brief string description of the error code.
       val_istrusted() determines if the status code indicates that the response can be trusted and
       val_isvalidated() determines if the status code indicates that the response was validated.  (See
       libval(3) for further information).

RETURN VALUES

       val_res_query() and val_res_search() return the number of bytes received on success and -1 on failure.

COPYRIGHT

       Copyright 2004-2013 SPARTA, Inc.  All rights reserved.  See the COPYING file included with the DNSSEC-
       Tools package for details.

AUTHORS

       Abhijit Hayatnagarkar, Suresh Krishnaswamy, Robert Story.

SEE ALSO

       res_query(3)

       get_context(3), val_getaddrinfo(3), val_gethostbyname(3)

       libval(3)

       http://www.dnssec-tools.org

perl v5.22.1                                       2015-11-19                                   val_res_query(3)