Add PAM session wrapper

remoting/host/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/config/win/manifest.gni")
 import("//build/util/version.gni")
 import("//chrome/version.gni")
 import("//remoting/remoting_enable.gni")
@@ skipping 1343 matching lines @@
         deps += [
           ":remoting_host_resources",
           ":remoting_host_xibs",
           ":remoting_infoplist_strings",
           "//remoting/resources:copy_locales",
         ]
       }
     }
 
     if (is_linux) {
+      executable("remoting_pam_session") {

[Jamie, 2016/09/09 18:27:11]

I think it would be better to name this according to what it does, not how it's
implemented. If it's something we expect primarily to be useful for starting the
host at boot, then perhaps something like remoting_boot_launcher; or since it's
primarily responsible for setting up the environment (in the generic, not the
Posix sense of the word), remoting_env_setup might be appropriate.

[rkjnsn, 2016/09/09 21:24:30]

remoting_user_session? I think the essence of what it does is start the me2me
script as the target user, doing whatever it needs to do to initialize a session
for that user.

[Jamie, 2016/09/12 20:36:51]

SGTM.

+        sources = [
+          "linux/remoting_pam_session.cc",
+        ]
+
+        deps = [
+          "//base",
+        ]
+
+        libs = [ "pam" ]
+      }
       copy("remoting_me2me_host_copy_script") {
         sources = [
           "linux/linux_me2me_host.py",
         ]
         outputs = [
           "$root_build_dir/remoting/chrome-remote-desktop",
         ]
       }
       copy("remoting_me2me_host_copy_host") {
         sources = [
@@ skipping 589 matching lines @@
                       root_build_dir),
           rebase_path(outputs[0], root_build_dir),
         ]
       }
     } else {
       group("remoting_host_installation") {
       }
     }
   }
 }