7 resolv_wrapper - A wrapper for dns name resolving or dns faking.
12 LD_PRELOAD=libresolv_wrapper.so RESOLV_WRAPPER_CONF="/path/to/resolv.conf" *./myapplication*
17 resolv_wrapper makes it possible on most UNIX platforms to contact your own DNS
18 implmentation in your test environment. It requires socket_wrapper to be able
20 If it doesn't work on a special platform the wrapper is able to fake DNS queries
21 and return valid responses to your application.
23 - Redirects name queries to the nameservers specified in your resolv.conf
24 - Can fake DNS queries using a simple formatted DNS hosts file.
29 *RESOLV_WRAPPER_CONF*::
31 This is used to specify the resolv.conf to use. The format of the resolv.conf
32 file is defined in the manpage 'resolv.conf(5)'. Currently only the *namserver*
33 directive is supported.
35 *RESOLV_WRAPPER_HOSTS*::
37 This environment variable is used for faking DNS queries. It must point to a
38 hosts-like text file that specifies fake records for custom queries. The
39 format of the file looks like this:
41 TYPE RECORD_NAME RECORD_VALUE
45 A dc.cwrap.org 127.0.0.10
46 AAAA dc.cwrap.org fd00::5357:5f0a
47 CNAME kerberos.cwrap.org dc.cwrap.org
48 SRV _kerberos._tcp.cwrap.org kerberos.cwrap.org 88
50 *RESOLV_WRAPPER_DEBUGLEVEL*::
52 If you need to see what is going on in resolv_wrapper itself or try to find a
53 bug, you can enable logging support in resolv_wrapper if you built it with
64 $ LD_PRELOAD=libresolv_wrapper.so RESOLV_WRAPPER_CONF="./resolv.conf" dig test.example.site