Authenticate user/password with PAM in BeginSessionRequest()

build/install-build-deps.sh

 #!/bin/bash -e
 
 # Copyright (c) 2009 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.
 
 # Script to install everything needed to build chromium (well, ideally, anyway)
 # See http://code.google.com/p/chromium/wiki/LinuxBuildInstructions
 # and http://code.google.com/p/chromium/wiki/LinuxBuild64Bit
 
@@ skipping 99 matching lines @@
           php5-cgi pkg-config python python-dev rpm subversion ttf-dejavu-core
           ttf-kochi-gothic ttf-kochi-mincho wdiff libcurl4-gnutls-dev
           $chromeos_dev_list"
 
 # Run-time libraries required by chromeos only
 chromeos_lib_list="libpulse0 libbz2-1.0 libcurl4-gnutls-dev"
 
 # Full list of required run-time libraries
 lib_list="libatk1.0-0 libc6 libasound2 libcairo2 libdbus-glib-1-2 libexpat1
           libfontconfig1 libfreetype6 libglib2.0-0 libgnome-keyring0 libgtk2.0-0
-          libnspr4-0d libnss3-1d libpango1.0-0 libpcre3 libpixman-1-0 libpng12-0
+          libnspr4-0d libnss3-1d libpam0g libpango1.0-0 libpcre3 libpixman-1-0
+          libpng12-0
           libstdc++6 libsqlite3-0 libx11-6 libxau6 libxcb1 libxcomposite1
           libxcursor1 libxdamage1 libxdmcp6 libxext6 libxfixes3 libxi6
           libxinerama1 libxrandr2 libxrender1 libxtst6 zlib1g
           $chromeos_lib_list"
 
 # Debugging symbols for all of the run-time libraries
 dbg_list="libatk1.0-dbg libc6-dbg libcairo2-dbg
           libfontconfig1-dbg libglib2.0-0-dbg libgtk2.0-0-dbg libnspr4-0d-dbg
           libnss3-1d-dbg libpango1.0-0-dbg libpcre3-dbg libpixman-1-0-dbg
           libx11-6-dbg libxau6-dbg libxcb1-dbg libxcomposite1-dbg
@@ skipping 318 matching lines @@
              sed -e 's/[.]so[.][0-9].*/.so/' |
              sort -u); do
     [ "x${i##*/}" = "xld-linux.so" ] && continue
     [ -r "$i" ] && continue
     j="$(ls "$i."* | sed -e 's/.*[.]so[.]\([^.]*\)$/\1/;t;d' |
          sort -n | tail -n 1)"
     [ -r "$i.$j" ] || continue
     sudo ln -s "${i##*/}.$j" "$i"
   done
 fi