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