[corenet Language]
The corenet language is a simple transformation of the Reference Policy
corenetwork module consisting of 5 files to a single file format with
sections. Each corenetwork file is placed into a corenet section as
follows:
<module>.if.in => [interface in]
<module>.if.m4 => [interface m4]
<module>.te.in => [policy in]
<module>.te.m4 => [policy m4]
<module>.fc => [context]
* These are the only valid section headers.
* A section begins with a section marker and ends with the next marker
encountered or the end of the file.
* All sections are required.
* Any text outside of a section is an error.
* The valid contents of each section are the same as for the separate
reference policy files.
* The standard filename extension is '.corenet'.
[corenet Tool]
The corenet tool can create a corenet module from a Reference Policy
corenetwork module.
Usage: corenet COMMAND -n [FILES] -m [FILES] -c [FILE] MODULE.corenet
Commands:
create create a new corenet
extract extract .if.(in,m4), .te.(in,m4), and .fc files from a corenet
Options:
--version show program's version number and exit
-h, --help show this help message and exit
-f, --force force overwriting existing files
Modes:
-n, --in specify 'in' files (interface and policy)
-m, --m4 specify 'm4' files (interface and policy)
-c FILE, --context=FILE
context file
Create options:
-i FILE, --interface=FILE
interface file
-p FILE, --policy=FILE
policy file
Example:
# corenet create -n -i corenetwork.if.in -p corenetwork.te.in -m -i corenetwork.if.m4 -p corenetwork.if.in -c corenetwork.fc corenetwork.corenet
corenet modules should have the '.corenet' extension. The resulting
corenetwork.corenet module looks like this:
[interface in]
## <summary>Policy controlling access to network objects</summary>
## <required val="true">
## Contains the initial SIDs for network objects.
<snip>
[interface m4]
#
# shiftn(num,list...)
#
<snip>
[policy in]
policy_module(corenetwork, 1.13.1)
<snip>
[policy m4]
#
# shiftn(num,list...)
#
<snip>
[context]
/dev/ippp.* -c gen_context(system_u:object_r:ppp_device_t,s0)
/dev/ppp -c gen_context(system_u:object_r:ppp_device_t,s0)
<snip>
[corenet HLL Compiler]
The corenetc high level language compiler compiles the the corenet
module into a refpol module and extracts the policy version from the
policy_module statement.
Usage: corenetc [OPTIONS] [MODULE]
Input is read from stdin unless MODULE is provided.
Output is written to stdout unless -o is specified.
Options:
--version show program's version number and exit
-h, --help show this help message and exit
-f, --force force overwriting existing files
-t DIR, --tmp=DIR temporary build directory
-o FILE, --output=FILE
output file
-c BOOL, --cleanup=BOOL
cleanup (remove) temporary directory (Default: True)
Example:
# corenetc < corenetwork.corenet > corenetwork.cil 3<> corenetwork.version
---
Makefile | 2 +-
corenet/COPYING | 504 +++++++++++++++++++++++++++++++++++++++++++
corenet/Makefile | 27 +++
corenet/corenet.conf | 4 +
corenet/corenet.py | 17 ++
corenet/corenet/corenet.py | 175 +++++++++++++++
corenet/corenet/corenetc.py | 129 +++++++++++
corenet/corenetc.py | 17 ++
corenet/setup.py | 13 ++
9 files changed, 887 insertions(+), 1 deletions(-)
create mode 100644 corenet/COPYING
create mode 100644 corenet/Makefile
create mode 100644 corenet/corenet.conf
create mode 100755 corenet/corenet.py
create mode 100644 corenet/corenet/__init__.py
create mode 100644 corenet/corenet/corenet.py
create mode 100644 corenet/corenet/corenetc.py
create mode 100755 corenet/corenetc.py
create mode 100755 corenet/setup.py
diff --git a/Makefile b/Makefile
index c174327..be2a4ec 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-SUBDIRS=libsepol libselinux libsemanage sepolgen checkpolicy policycoreutils refpol # policy
+SUBDIRS=libsepol libselinux libsemanage sepolgen checkpolicy policycoreutils refpol corenet # policy
PYSUBDIRS=libselinux libsemanage
ifeq ($(DEBUG),1)
diff --git a/corenet/COPYING b/corenet/COPYING
new file mode 100644
index 0000000..8add30a
--- /dev/null
+++ b/corenet/COPYING
@@ -0,0 +1,504 @@
+ GNU LESSER GENERAL PUBLIC LICENSE
+ Version 2.1, February 1999
+
+ Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+ 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
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+[This is the first released version of the Lesser GPL. It also counts
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+ the version number 2.1.]
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diff --git a/corenet/Makefile b/corenet/Makefile
new file mode 100644
index 0000000..f108f74
--- /dev/null
+++ b/corenet/Makefile
@@ -0,0 +1,27 @@
+PREFIX ?= $(DESTDIR)/usr
+BINDIR ?= $(PREFIX)/bin
+
+LANGUAGEDIR ?= $(DESTDIR)/etc/selinux/language.d
+
+PYTHON ?= python
+
+ifneq ($(origin DESTDIR), undefined)
+ PYDESTDIR ?= --root=$(DESTDIR)
+endif
+
+all:
+ $(PYTHON) setup.py build
+
+install:
+ $(PYTHON) setup.py install $(PYDESTDIR)
+ -mkdir -p $(BINDIR)
+ install -m 755 corenet.py $(BINDIR)/corenet
+ install -m 755 corenetc.py $(BINDIR)/corenetc
+ -mkdir -p $(LANGUAGEDIR)
+ install -m 755 corenet.conf $(LANGUAGEDIR)
+
+clean distclean:
+ $(PYTHON) setup.py clean
+ rm -fr build
+ rm -f corenet/*.pyc
+
diff --git a/corenet/corenet.conf b/corenet/corenet.conf
new file mode 100644
index 0000000..c68ba26
--- /dev/null
+++ b/corenet/corenet.conf
@@ -0,0 +1,4 @@
+NAME="Corenetwork"
+COMPILER="/usr/bin/corenetc"
+EXTENSION="corenet"
+FLAGS=""
diff --git a/corenet/corenet.py b/corenet/corenet.py
new file mode 100755
index 0000000..8c6b1f4
--- /dev/null
+++ b/corenet/corenet.py
@@ -0,0 +1,17 @@
+#!/usr/bin/python
+
+# Authors: Caleb Case <ccase@xxxxxxxxxx>
+#
+# Copyright (C) 2009-2010 Tresys Technology, LLC
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the Lesser GNU General Public License as
+# published by the Free Software Foundation, version 2.
+
+import corenet.corenet
+import sys
+
+try:
+ corenet.corenet.main()
+except Exception as e:
+ sys.stderr.write(sys.argv[0] + ": Error: " + str(e) + "\n")
+ sys.exit(1)
diff --git a/corenet/corenet/__init__.py b/corenet/corenet/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/corenet/corenet/corenet.py b/corenet/corenet/corenet.py
new file mode 100644
index 0000000..266861b
--- /dev/null
+++ b/corenet/corenet/corenet.py
@@ -0,0 +1,175 @@
+#!/usr/bin/python
+
+# Authors: Caleb Case <ccase@xxxxxxxxxx>
+#
+# Copyright (C) 2009-2010 Tresys Technology, LLC
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the Lesser GNU General Public License as
+# published by the Free Software Foundation, version 2.
+
+from optparse import OptionParser, OptionGroup
+import os.path
+import re
+from refpol import refpol
+import sys
+
+force = False
+
+def itf_to_corenet(if_in_p, if_m4_p, te_in_p, te_m4_p, fc_p, corenet_p):
+ refpol.file_exists(corenet_p)
+
+ sections = [
+ ("[interface in]", if_in_p),
+ ("[interface m4]", if_m4_p),
+ ("[policy in]", te_in_p),
+ ("[policy m4]", te_m4_p),
+ ("[context]", fc_p),
+ ]
+
+ with open(corenet_p, 'w') as out:
+ for (section, path) in sections:
+ with open(path, 'r') as f:
+ out.write("\n" + section + "\n")
+ out.write(f.read())
+
+def corenet_to_itf(corenet_p, if_in_p, if_m4_p, te_in_p, te_m4_p, fc_p):
+ verify_corenet(corenet_p)
+
+ output = None
+
+ sections = {
+ "[interface in]" : if_in_p,
+ "[interface m4]" : if_m4_p,
+ "[policy in]" : te_in_p,
+ "[policy m4]" : te_m4_p,
+ "[context]" : fc_p,
+ }
+
+ try:
+ with open(corenet_p, 'r') as input:
+ for line in input:
+ if line.strip() in sections:
+ if output is not None:
+ output.close()
+ refpol.file_exists(sections[line.strip()])
+ output = open(sections[line.strip()], 'w')
+ else:
+ if output is None and line.strip() == "":
+ # ignore blank lines before first section
+ continue
+ output.write(line)
+ finally:
+ if output is not None:
+ output.close()
+
+def verify_corenet(corenet):
+ sections = {
+ "[interface in]" : False,
+ "[interface m4]" : False,
+ "[policy in]" : False,
+ "[policy m4]" : False,
+ "[context]" : False,
+ }
+
+ pattern = re.compile("\s*policy_module\((?P<name>\w+),\s*(?P<version>[0-9.]+)\).*")
+ result = None
+
+ if isinstance(corenet, str):
+ with open(corenet, 'r') as input:
+ return verify_corenet(input)
+
+ lineno = 0
+ for line in corenet:
+ lineno = lineno + 1
+ section = line.strip()
+
+ if section == "":
+ # ignore blank lines
+ pass
+ elif section in sections:
+ if sections[section] is True:
+ raise Exception("Too many %s sections (%s:%d)." % (section, corenet.name, lineno))
+ sections[section] = True
+ else:
+ if not any(sections.values()):
+ raise Exception("Invalid data outside section at line %s:%d: %s" % (corenet.name, lineno, line))
+
+ mod = pattern.match(line)
+ if mod:
+ result = { "name" : mod.group("name"),
+ "version" : mod.group("version") }
+ if not result:
+ raise Exception("Failed to discover module name and version. policy_module statement missing?")
+
+ return result
+
+def verify_ext(corenet_p):
+ ext = corenet_p.rsplit('.', 1)[1]
+ if ext != "corenet":
+ raise Exception("Invalid corenet file extension %s on %s." % (ext, corenet_p))
+
+usage = """%prog COMMAND -n [FILES] -m [FILES] -c [FILE] MODULE.corenet
+
+Commands:
+ create create a new corenet
+ extract extract .if.(in,m4), .te.(in,m4), and .fc files from a corenet"""
+
+version = "%prog 1.0"
+
+def main():
+ def create(option, opt_str, value, parser, *args, **kwargs):
+ if opt_str in ["-i", "--interface"]:
+ if parser.values.mode == "in":
+ parser.values.if_in_p = value
+ elif parser.values.mode == "m4":
+ parser.values.if_m4_p = value
+ else:
+ raise Exception("Invalid mode: %s" % parser.values.mode)
+ elif opt_str in ["-p", "--policy"]:
+ if parser.values.mode == "in":
+ parser.values.te_in_p = value
+ elif parser.values.mode == "m4":
+ parser.values.te_m4_p = value
+ else:
+ raise Exception("Invalid mode: %s" % parser.values.mode)
+ else:
+ raise Exception("Invalid file selector: %s" % option)
+
+ parser = OptionParser(usage = usage, version = version)
+ parser.add_option("-f", "--force", action = "store_true", default = False, dest = "force", help = "force overwriting existing files")
+
+ modes = OptionGroup(parser, "Modes")
+ modes.add_option("-n", "--in", action = "store_const", const = "in", dest = "mode", help = "specify 'in' files (interface and policy)")
+ modes.add_option("-m", "--m4", action = "store_const", const = "m4", dest = "mode", help = "specify 'm4' files (interface and policy)")
+ modes.add_option("-c", "--context", action = "store", default = None, dest = "fc_p", help = "context file", metavar = "FILE")
+ parser.add_option_group(modes)
+
+ create_options = OptionGroup(parser, "Create options")
+ create_options.add_option("-i", "--interface", action = "callback", callback = create, type = "string", help = "interface file", metavar = "FILE")
+ create_options.add_option("-p", "--policy", action = "callback", callback = create, type = "string", help = "policy file", metavar = "FILE")
+ parser.add_option_group(create_options)
+
+ (options, args) = parser.parse_args()
+ if len(args) != 2:
+ parser.error("Invalid number of arguments %d." % len(args))
+
+ force = options.force
+ refpol.force = options.force
+
+ verify_ext(args[1])
+
+ command = args[0]
+ if command == "create":
+ itf_to_corenet(options.if_in_p, options.if_m4_p, options.te_in_p, options.te_m4_p, options.fc_p, args[1])
+ elif command == "extract":
+ module = args[1].rsplit('.', 1)[0]
+ corenet_to_itf(args[1], module + ".if.in", module + ".if.m4", module + ".te.in", module + ".te.m4", module + ".fc")
+ else:
+ parser.error("Invalid command %s." % command)
+
+if __name__ == '__main__':
+ try:
+ main()
+ except Exception as e:
+ sys.stderr.write(sys.argv[0] + ": Error: " + str(e) + "\n")
+ sys.exit(1)
diff --git a/corenet/corenet/corenetc.py b/corenet/corenet/corenetc.py
new file mode 100644
index 0000000..f707590
--- /dev/null
+++ b/corenet/corenet/corenetc.py
@@ -0,0 +1,129 @@
+#!/usr/bin/python
+
+# Authors: Caleb Case <ccase@xxxxxxxxxx>
+#
+# Copyright (C) 2009-2010 Tresys Technology, LLC
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the Lesser GNU General Public License as
+# published by the Free Software Foundation, version 2.
+
+import corenet
+from optparse import OptionParser, OptionGroup
+import os
+import os.path
+import tempfile
+from refpol import refpol
+import shutil
+import subprocess
+import sys
+
+def to_bool(str):
+ return {
+ "true" : True,
+ "t" : True,
+ "1" : True,
+ "false" : False,
+ "f" : False,
+ "0" : False,
+ }[str.lower()]
+
+usage = """%prog [OPTIONS] [MODULE]
+
+Input is read from stdin unless MODULE is provided.
+Output is written to stdout unless -o is specified."""
+
+version = "%prog 1.0"
+
+def main():
+ # create cmdline parser
+ parser = OptionParser(usage = usage, version = version)
+ parser.add_option("-f", "--force", action = "store_true", default = False, dest = "force", help = "force overwriting existing files")
+ parser.add_option("-t", "--tmp", action = "store", default = None, dest = "tmp", help = "temporary build directory", metavar = "DIR")
+ parser.add_option("-o", "--output", action = "store", default = None, dest = "output", help = "output file", metavar = "FILE")
+ parser.add_option("-c", "--cleanup", action = "store", default = "True", dest = "cleanup", help = "cleanup (remove) temporary directory (Default: True)", metavar = "BOOL")
+
+ # parse cmdline
+ (options, args) = parser.parse_args()
+ options.input = sys.stdin
+
+ if len(args) > 1:
+ parser.error("Invalid number of arguments %d." % len(args))
+ elif len(args) == 1:
+ options.input = open(args[0])
+
+ # save the working directory
+ saved_cwd = os.getcwd()
+
+ force = options.force
+ refpol.force = options.force
+
+ if options.output is None:
+ options.output = sys.stdout
+ else:
+ refpol.file_exists(options.output)
+ options.output = open(options.output, "w")
+
+ try:
+ if not options.tmp:
+ # create tmp build dir if one isn't provided
+ options.tmp = tempfile.mkdtemp("-corenetc")
+ else:
+ shutil.rmtree(options.tmp, ignore_errors = True)
+ os.mkdir(options.tmp)
+
+ os.chdir(options.tmp)
+
+ with open("input.corenet", "w") as input:
+ shutil.copyfileobj(options.input, input)
+
+ with open("input.corenet", "r") as input:
+ # verify corenet (and write out version)
+ mod = corenet.verify_corenet(input)
+
+ with os.fdopen(3, "w") as ver:
+ ver.write(mod["version"]);
+
+ # unpack corenet
+ corenet.corenet_to_itf("input.corenet",
+ "input.if",
+ "input.if.m4",
+ "input.te.in",
+ "input.te.m4",
+ "input.fc")
+
+ # make corenet if
+ p = subprocess.Popen("egrep '^[[:blank:]]*network_(interface|node|port|packet)(_controlled)?\(.*\)' input.te.in | m4 input.if.m4 - | sed -e 's/dollarsone/\$1/g' -e 's/dollarszero/\$0/g'", shell = True, stdout = open("input.if", "a"), stderr = subprocess.PIPE, close_fds = True)
+ (stdout, stderr) = p.communicate()
+ sys.stderr.write(stderr)
+ if p.returncode != 0:
+ raise Exception("Failed to compile corenet module if (%d)." % p.returncode)
+
+ # make corenet te
+ p = subprocess.Popen("m4 input.te.m4 input.te.in | sed -e 's/dollarsone/\$1/g' -e 's/dollarszero/\$0/g'", shell = True, stdout = open("input.te", "w"), stderr = subprocess.PIPE, close_fds = True)
+ (stdout, stderr) = p.communicate()
+ sys.stderr.write(stderr)
+ if p.returncode != 0:
+ raise Exception("Failed to compile corenet module te (%d)." % p.returncode)
+
+ # combine into a refpol
+ refpol.itf_to_ref("input.if", "input.te", "input.fc", "input.ref")
+
+ with open("input.ref", "r") as input:
+ shutil.copyfileobj(input, options.output)
+
+ finally:
+ if to_bool(options.cleanup):
+ shutil.rmtree(options.tmp)
+
+ options.input.close()
+ options.output.close()
+
+ # return the saved directory
+ os.chdir(saved_cwd)
+
+if __name__ == '__main__':
+ try:
+ main()
+ except Exception as e:
+ sys.stderr.write(sys.argv[0] + ": Error: " + str(e) + "\n")
+ sys.exit(1)
diff --git a/corenet/corenetc.py b/corenet/corenetc.py
new file mode 100755
index 0000000..2afb4c5
--- /dev/null
+++ b/corenet/corenetc.py
@@ -0,0 +1,17 @@
+#!/usr/bin/python
+
+# Authors: Caleb Case <ccase@xxxxxxxxxx>
+#
+# Copyright (C) 2009-2010 Tresys Technology, LLC
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the Lesser GNU General Public License as
+# published by the Free Software Foundation, version 2.
+
+import corenet.corenetc
+import sys
+
+try:
+ corenet.corenetc.main()
+except Exception as e:
+ sys.stderr.write(sys.argv[0] + ": Error: " + str(e) + "\n")
+ sys.exit(1)
diff --git a/corenet/setup.py b/corenet/setup.py
new file mode 100755
index 0000000..11b2b98
--- /dev/null
+++ b/corenet/setup.py
@@ -0,0 +1,13 @@
+#!/usr/bin/python
+
+from distutils.core import setup
+
+setup( name = "corenet",
+ version = "0.1",
+ description = "Corenet Tool",
+# url = "",
+ author = "Caleb Case",
+ author_email = "ccase@xxxxxxxxxx",
+ license = "LGPL v2.1",
+ packages = ['corenet'],
+ )
--
1.6.3.3
--
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