#!/usr/bin/python3
# Inspects ros dir for missing .so links and reports those packages.
#
# Copyright Sean Greenslade, July 2017
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see .

import sys
import os
import stat
import subprocess
import re
import pyalpm
from pycman import config
from pycman import pkginfo

rospath = "/opt/ros"

pkgs = []

if not os.path.isdir(rospath):
    print("Invalid path", rospath)
    sys.exit(1)
    
print("Inspecting...", end="")
sys.stdout.flush()

for root, dirs, files in os.walk(rospath):
    path = root.split(os.sep)
    for f in files:
        ff = os.path.join(rospath, root, f)
        if stat.S_IXUSR & os.stat(ff)[stat.ST_MODE]:
            p = subprocess.Popen(["ldd", ff], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
            result = p.stdout.readlines()
            print(".", end="")
            sys.stdout.flush()
            for l in result:
                if re.search("not found", l.decode()):
                    #print("FOUND in", ff)
                    #print("Offending lib:", l.decode().split()[0])

                    q = subprocess.Popen(["pacman", "-Qo", ff], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
                    resultq = q.stdout.readlines()
                    for li in resultq:
                        r = re.search("is owned by (.*) (.*)$", li.decode())
                        if r:
                            nam = r.group(1)
                            #print(nam)
                            if nam not in pkgs:
                                pkgs.append(nam)
                                #print("A")
                            
handle = config.init_with_config("/etc/pacman.conf")
db = handle.get_localdb()

print()
print("Packages that need updating:")
for i in pkgs:
    print(i)