Testing your full software stack on a single machine.
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Preloading is a feature of the dynamic linker (ld). On most UNIX
systems ld allows you to load a number of libraries before those
that are required by an executable. The cwrap project uses this feature
to implement special libraries which can be used to fake certain behavior
of the system. Think of it like "The Matrix" where reality is simulated
and everything is a lie!
Learn more ...
socket_wrapper makes possible to run several instances of a
a full client/server software stack on the same machine and to perform
functional testing of many complex network configurations locally, with
without going out to the network.
Learn more about socket_wrapper...
System management software often requires to create, modify, or
delete unix users. Or just switch user identity its processes use to
interact with the system e.g., a privilege separation in a user space
file server. To be able to test that you need the privilege to modify
the passwd and groups file. With nss_wrapper it is possible to define
your own passwd and groups file which will be used by software to act
correctly while under test.
Learn more about nss_wrapper...
Applications believe in DNS resolution. nss_wrapper allows
them to believe in your twist of their reality and seamlessly
blend addresses they get through socket_wrapper with DNS
resolution of their host names.
Learn more about nss_wrapper...
File serving applications often need a privilege separation to be
able to switch to the connecting user identity and do required file
operations. uid_wrapper convincingly lies to the applications,
letting them to believe they are operating as root and even switching
between uids and gids as needed.
Learn more about uid_wrapper...
It is likely that if you have a server/client architecture, you
need to do DNS queries or a third party library, like Kerberos needs
to be able to do queries. In the case of Kerberos the client needs to lookup
the address of the KDC via a SRV record. resolv_wrapper is able to
either redirect all DNS queries to your DNS server implementation, or
fake DNS replies!
Learn more about resolv_wrapper...
This tool makes it easy to either test an application that uses
pluggable authentication modules (PAM) to authenticate a user, or to
develop test cases to make sure that a PAM module under development
is working correctly. It enables developers to create unit tests for
their PAM-using code in a simple manner.
Learn more about pam_wrapper...
This tool allows you to avoid drop privileges and limiting resources
by wrapping the calls responsible like chroot or setrlimit.
Learn more about priv_wrapper...
2022-11-24
A new version of priv_wrapper has been released address issues on PPC64.
2022-11-24
A new version of socket_wrapper, a tool to create artifical networks
has been released. This fixes several small issues.
2022-10-24
Initial release for privilege dropping wrapper.