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(Updated March 13, 2014, 12:33 a.m.) Status ------ This change has been marked as submitted. Review request for KDE Runtime, Release Team and Valentin Rusu. Repository: kde-runtime Description ------- This patch adds support for pam-kwallet (in my scratch right now, to be released soon). This is how the new pam works, and why this patch is needed: In order to open the wallet in a secure way we have to try hard to not send the hash on an insecure manner. This is how we achieve that: -pam_kwallet creates a pipe. -pam_kwallet opens a local socket listening somewhere (/tmp/foo.socket for example). -pam_kwallet forks+execv kwallet, passing via arguments the sockets (pipe and local socket). -pam_kwallet sends the hash via the pipe. -kwalletd gets the hash and waits for the environment. -startkde uses "socat" to send the environment to kwalletd. -kwalletd setups the environment before any Qt code is executed. -kwalletd resumes execution. With this way of executing kwallet we get: -pam_kwallet knows to who it is sending the hash (its on child). -hash is never revealed on shared memory (dbus), since pipes are private to the apps. -ptrace is usually disabled so only root can see the hash on the app memory -no Qt code is executed without the proper environment (same as startkde) -if kwalletd is executed normally (not from pam_kwallet) then it is business as usual. The patch also comes with integration tests that simulate how kwalletd is executed in the pam module. For the release team, I would love to add this to 4.13, after all it is innocuous if kwalletd is not executed via pam_module. Diffs ----- kwalletd/CMakeLists.txt e9aef16 kwalletd/autotests/CMakeLists.txt PRE-CREATION kwalletd/autotests/kdewallet.kwl PRE-CREATION kwalletd/autotests/kwalletexecuter.h PRE-CREATION kwalletd/autotests/kwalletexecuter.cpp PRE-CREATION kwalletd/autotests/qtest_kwallet.h PRE-CREATION kwalletd/autotests/testpamopen.cpp PRE-CREATION kwalletd/autotests/testpamopennofile.cpp PRE-CREATION kwalletd/main.cpp f9af414 Diff: https://git.reviewboard.kde.org/r/116555/diff/ Testing ------- Thanks, Àlex Fiestas
