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|
################################################################################
# _____ _
# |_ _| |_ ___
# | | | ' \/ -_)
# |_| |_||_\___|
# _ _ ____ _ _
# / \ _ __ ___| |_(_) ___ __ _ | _ \ _ __ ___ (_) ___ ___| |_
# / _ \ | '__/ __| __| |/ __/ _` | | |_) | '__/ _ \| |/ _ \/ __| __|
# / ___ \| | | (__| |_| | (_| (_| | | __/| | | (_) | | __/ (__| |_
# /_/ \_\_| \___|\__|_|\___\__,_| |_| |_| \___// |\___|\___|\__|
# |__/
# The Arctica Modular Remote Computing Framework
#
################################################################################
#
# Copyright (C) 2015-2016 The Arctica Project
# http://http://arctica-project.org/
#
# This code is dual licensed: strictly GPL-2 or AGPL-3+
#
# GPL-2
# -----
# 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; version 2 of the License.
#
# 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, write to the
# Free Software Foundation, Inc.,
#
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
#
# AGPL-3+
# -------
# This programm is free software; you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This programm 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program; if not, write to the
# Free Software Foundation, Inc.,
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
#
# Copyright (C) 2015-2016 Guangzhou Nianguan Electronics Technology Co.Ltd.
# <opensource@gznianguan.com>
# Copyright (C) 2015-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
#
################################################################################
package Arctica::Core::ManageDirs;
use strict;
use Exporter qw(import);
use Arctica::Core::Basics;
use Arctica::Core::BugOUT::Basics qw( BugOUT );
use File::stat;
use Data::Dumper;# Remove this before release! (unless we're still dependant)
# Be very selective about what (if any) gets exported by default:
our @EXPORT = qw( new check_for_rtail_dir permZealot );
# And be mindfull of what we lett the caller request here too:
our @EXPORT_OK = qw( );
my %_CONF;
sub new {
BugOUT(9,"ManageDir->new ENTER\n");
my $class_name = $_[0];# Be EXPLICIT!! DON'T SHIFT OR "@_";
my $DefaultTMP = "/tmp";# Load from Config?
my $self = {
isArctica => 1, # Declare that this is a Arctica "something"
};
if ((-d $ENV{'HOME'}) and (user_owns_it($ENV{'HOME'}))) {
my $check_arctica_home = "$ENV{'HOME'}/.arctica";
if ($check_arctica_home =~ /^(.*\/\.arctica)$/) {
$check_arctica_home = $1;
}
unless (-d $check_arctica_home) {
mkdir($check_arctica_home)
or die("ManageDirs: Failed to create .arctica 'HOME' directory");
}
permZealot($check_arctica_home);
if (check_secure_permissions($check_arctica_home)) {
$self->{'home_adir'} = $check_arctica_home;
} else {
die("ManageDirs: Unable to initiate .arctica HOME dir");
}
} else {die("The user is a homeless bum...");}
if (-d $DefaultTMP) {
if (my $gotDir = check_for_rtail_dir($DefaultTMP)) {
# GOT DIR... LETS WORK WITH THAT....
if (-d "$DefaultTMP/$gotDir") {
BugOUT(9,"Found existing ADir: '$gotDir'");
$self->{'tmp_adir'} = "$DefaultTMP/$gotDir";
} else {
die("Retesting full path failed: \"$DefaultTMP/$gotDir\"");
}
} else {
BugOUT(9,"No ADir, lets create a new one!");
my $gotDir = create_new_adir($DefaultTMP);
if (-d "$DefaultTMP/$gotDir") {
BugOUT(9,"Verified creation of: '$gotDir'");
$self->{'tmp_adir'} = "$DefaultTMP/$gotDir";
} else {
die("Retesting full path failed: \"$DefaultTMP/$gotDir\"");
}
}
} else {die("No TMP? ( $DefaultTMP )");}
BugOUT(9,"ManageDir->new END\n");
return $self;
}
sub permZealot {
# IF WE CAN'T SET SECURE PERMISSIONS... DIE!
my $the_path = $_[0];
$the_path =~ s/\n//g;
if (-f $the_path) {
chmod(0600,$the_path)
or die("permZealot: Can't set permissions on \"$the_path\"!");
unless (check_secure_permissions($the_path)) {
die("permZealot Can't verify permissions on \"$the_path\"!");
}
BugOUT(9,"permZealot-> set chmod 0600 for file $the_path");
} elsif (-d $the_path) {
chmod(0700,$the_path)
or die("permZealot: Can't set permissions on \"$the_path\"!");
unless (check_secure_permissions($the_path)) {
die("permZealot: Can't verify permissions on \"$the_path\"!");
}
BugOUT(9,"permZealot-> set chmod 0600 for dir $the_path");
} elsif (-S $the_path) {
chmod(0700,$the_path)
or die("permZealot: Can't set permissions on \"$the_path\"!");
unless (check_secure_permissions($the_path)) {
die("permZealot: Can't verify permissions on \"$the_path\"!");
}
BugOUT(9,"permZealot-> set chmod 0600 for socket $the_path");
} else {
die("permZealot: Failed to set permissions on \"$the_path\"!");
}
}
sub create_new_adir {
BugOUT(9,"Entering 'create_new_adir'");
my $the_tmp_dir = $_[0];
my $the_sanetized_username = make_sane_userdir_name();
my $the_random_dirtail = genARandom('dirtail',16);
my $potential_new_adir = ".arctica\-$the_sanetized_username\-$the_random_dirtail";
unless (-d "$the_tmp_dir/$potential_new_adir") {
mkdir("$the_tmp_dir/$potential_new_adir")
or die("Unable to create '$the_tmp_dir/$potential_new_adir'");
permZealot("$the_tmp_dir/$potential_new_adir");
mkdir("$the_tmp_dir/$potential_new_adir/cli")
or die("Unable to create '$the_tmp_dir/$potential_new_adir/cli'");
permZealot("$the_tmp_dir/$potential_new_adir/cli");
mkdir("$the_tmp_dir/$potential_new_adir/ses")
or die("Unable to create '$the_tmp_dir/$potential_new_adir/ses'");
permZealot("$the_tmp_dir/$potential_new_adir/ses");
mkdir("$the_tmp_dir/$potential_new_adir/con")
or die("Unable to create '$the_tmp_dir/$potential_new_adir/con'");
permZealot("$the_tmp_dir/$potential_new_adir/con");
mkdir("$the_tmp_dir/$potential_new_adir/soc")
or die("Unable to create '$the_tmp_dir/$potential_new_adir/soc'");
permZealot("$the_tmp_dir/$potential_new_adir/soc");
mkdir("$the_tmp_dir/$potential_new_adir/soc/local/")
or die("Unable to create '$the_tmp_dir/$potential_new_adir/soc/local/'");
permZealot("$the_tmp_dir/$potential_new_adir/soc/local/");
mkdir("$the_tmp_dir/$potential_new_adir/soc/remote/")
or die("Unable to create '$the_tmp_dir/$potential_new_adir/soc/remote/'");
permZealot("$the_tmp_dir/$potential_new_adir/soc/remote/");
mkdir("$the_tmp_dir/$potential_new_adir/soc/remote/in/")
or die("Unable to create '$the_tmp_dir/$potential_new_adir/soc/remote/in/'");
permZealot("$the_tmp_dir/$potential_new_adir/soc/remote/in/");
mkdir("$the_tmp_dir/$potential_new_adir/soc/remote/out/")
or die("Unable to create '$the_tmp_dir/$potential_new_adir/soc/remote/out/'");
permZealot("$the_tmp_dir/$potential_new_adir/soc/remote/out/");
BugOUT(8,"create_new_adir: all seems ok, returning '$potential_new_adir'");
return $potential_new_adir;
} else {
die("Realizing '$the_tmp_dir/$potential_new_adir' already exist?!");
}
BugOUT(9,"Unexpected end of 'create_new_adir'");
}
sub check_for_rtail_dir {
my $check_in_dir = $_[0];
my $the_sanetized_username = make_sane_userdir_name();
if (-d $check_in_dir) {
my @potential_dirs;
my $dir_to_use;
opendir(CHKDIR, $check_in_dir)
or die("could not read \"$check_in_dir\"");
while (readdir(CHKDIR)) {
my $chk_dir = $_;
if (-d "$check_in_dir/$chk_dir") {
if ($chk_dir =~ /^\.arctica\-([a-zA-Z0-9\_]*)\-([a-zA-Z0-9]*)$/) {
my $d_usrname = $1;
my $d_rndtail = $2;
if ($the_sanetized_username eq $d_usrname) {
my $sanetized_dir_name
= ".arctica-$d_usrname-$d_rndtail";
if (user_owns_it("$check_in_dir/$sanetized_dir_name")) {
push @potential_dirs,
$sanetized_dir_name;
} else {
warn("check_for_rtail_dir: ",
"wonky ownership of $sanetized_dir_name");
}
}
} else {
# ADD SOME DEBUGGING STUFF HERE?!
# print " POFS: $_\n";
}
}
}
closedir(CHKDIR);
my $pdircnt = @potential_dirs;
my $pdmtime = 0;
if ($pdircnt > 0) {
if ($pdircnt > 1) {
warn("check_for_rtail_dir: more than one tmp dir?");
}
# Pick the one with highest mtime....
foreach my $pdir (@potential_dirs) {
$pdir =~ s/[\s\n]//g;
if (-d "$check_in_dir/$pdir") {
my $mtime = stat("$check_in_dir/$pdir")->mtime;
if ($mtime > $pdmtime) {
$pdmtime = $mtime;
$dir_to_use = $pdir;
}
}
}
if (-d "$check_in_dir/$dir_to_use") {
return $dir_to_use;
} else {
warn("check_for_rtail_dir: no existing dirs found!");
return 0;
}
} else {
warn("check_for_rtail_dir: no existing dirs found!");
return 0;
}
} else {
die("rtail check fail! This is not a dir: \"$check_in_dir\"");
}
}
sub check_secure_permissions {
my $the_path = $_[0];
BugOUT(9,"check_secure_permissions for $the_path");
$the_path =~ s/\n//g;
if (user_owns_it($the_path)) {
my $file_stat = stat($the_path);
if (-f $the_path) {
if ($file_stat->mode ne 33152) {
warn("Insecure permissions for \"$the_path\" ",
"(",$file_stat->mode,")\n");
return 0;
} else {
return 1;
}
} elsif (-d $the_path) {
if ($file_stat->mode ne 16832) {
warn("Insecure permissions for \"$the_path\" ",
"(",$file_stat->mode,")\n");
return 0;
} else {
return 1;
}
} elsif (-S $the_path) {
if ($file_stat->mode ne 49600) {
warn("Insecure permissions for \"$the_path\" ",
"(",$file_stat->mode,")\n");
return 0;
} else {
return 1;
}
} else {
warn("Failed to check permissions for \"$the_path\"!");
return 0;
}
} else {
return 0;
}
}
sub user_owns_it {
my $the_path = $_[0];
$the_path =~ s/\n//g;
BugOUT(9,"check user_owns_it $the_path");
my $the_user = $_[1];
if (-e $the_path) {
unless ($the_user) {
$the_user = $ENV{'USER'};
}
my $file_stat = stat($the_path);
if (getpwuid($file_stat->uid) eq $the_user) {
return 1;
} else {
warn("user_owns_it, $the_path is owned by ",
getpwuid($file_stat->uid)," not $the_user !\n");
return 0;
}
} else {
warn("user_owns_it, can't find: $the_path !\n");
return 0;
}
}
sub make_sane_userdir_name {
my $name = $ENV{'USER'};
BugOUT(9,"make_sane_userdir_name for '$name'");
$name =~ s/([^a-zA-Z0-9])/sprintf("_%x",ord($1))/egi;
if ($name =~ /^([a-zA-Z0-9\_]*)$/) {
$name = $1;
return $name;
} else {
die("make_sane_userdir_name: sanitation of '$ENV{'USER'}/$name' FAILED!");
}
}
1;
|
