438 lines
18 KiB
Python
438 lines
18 KiB
Python
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#! /usr/bin/python
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#
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# File: SMJobBlessUtil.py
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#
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# Contains: Tool for checking and correcting apps that use SMJobBless.
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#
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# Written by: DTS
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#
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# Copyright: Copyright (c) 2012 Apple Inc. All Rights Reserved.
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#
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# Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Inc.
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# ("Apple") in consideration of your agreement to the following
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# terms, and your use, installation, modification or
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# redistribution of this Apple software constitutes acceptance of
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# these terms. If you do not agree with these terms, please do
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# not use, install, modify or redistribute this Apple software.
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#
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# In consideration of your agreement to abide by the following
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# terms, and subject to these terms, Apple grants you a personal,
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# non-exclusive license, under Apple's copyrights in this
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# original Apple software (the "Apple Software"), to use,
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# reproduce, modify and redistribute the Apple Software, with or
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# without modifications, in source and/or binary forms; provided
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# that if you redistribute the Apple Software in its entirety and
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# without modifications, you must retain this notice and the
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# following text and disclaimers in all such redistributions of
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# the Apple Software. Neither the name, trademarks, service marks
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# or logos of Apple Inc. may be used to endorse or promote
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# products derived from the Apple Software without specific prior
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# written permission from Apple. Except as expressly stated in
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# this notice, no other rights or licenses, express or implied,
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# are granted by Apple herein, including but not limited to any
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# patent rights that may be infringed by your derivative works or
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# by other works in which the Apple Software may be incorporated.
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#
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# The Apple Software is provided by Apple on an "AS IS" basis.
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# APPLE MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
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# WITHOUT LIMITATION THE IMPLIED WARRANTIES OF NON-INFRINGEMENT,
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# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, REGARDING
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# THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
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# COMBINATION WITH YOUR PRODUCTS.
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#
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# IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT,
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# INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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# TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ARISING IN ANY WAY
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# OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
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# OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY
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# OF CONTRACT, TORT (INCLUDING NEGLIGENCE), STRICT LIABILITY OR
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# OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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import sys
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import os
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import getopt
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import subprocess
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import plistlib
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import operator
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class UsageException (Exception):
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"""
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Raised when the progam detects a usage issue; the top-level code catches this
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and prints a usage message.
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"""
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pass
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class CheckException (Exception):
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"""
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Raised when the "check" subcommand detects a problem; the top-level code catches
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this and prints a nice error message.
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"""
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def __init__(self, message, path=None):
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self.message = message
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self.path = path
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def checkCodeSignature(programPath, programType):
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"""Checks the code signature of the referenced program."""
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# Use the codesign tool to check the signature. The second "-v" is required to enable
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# verbose mode, which causes codesign to do more checking. By default it does the minimum
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# amount of checking ("Is the program properly signed?"). If you enabled verbose mode it
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# does other sanity checks, which we definitely want. The specific thing I'd like to
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# detect is "Does the code satisfy its own designated requirement?" and I need to enable
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# verbose mode to get that.
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args = [
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# "false",
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"codesign",
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"-v",
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"-v",
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programPath
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]
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try:
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subprocess.check_call(args, stderr=open("/dev/null"))
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except subprocess.CalledProcessError, e:
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raise CheckException("%s code signature invalid" % programType, programPath)
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def readDesignatedRequirement(programPath, programType):
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"""Returns the designated requirement of the program as a string."""
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args = [
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# "false",
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"codesign",
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"-d",
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"-r",
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"-",
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programPath
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]
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try:
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req = subprocess.check_output(args, stderr=open("/dev/null"))
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except subprocess.CalledProcessError, e:
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raise CheckException("%s designated requirement unreadable" % programType, programPath)
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reqLines = req.splitlines()
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if len(reqLines) != 1 or not req.startswith("designated => "):
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raise CheckException("%s designated requirement malformed" % programType, programPath)
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return reqLines[0][len("designated => "):]
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def readInfoPlistFromPath(infoPath):
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"""Reads an "Info.plist" file from the specified path."""
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try:
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info = plistlib.readPlist(infoPath)
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except:
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raise CheckException("'Info.plist' not readable", infoPath)
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if not isinstance(info, dict):
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raise CheckException("'Info.plist' root must be a dictionary", infoPath)
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return info
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def readPlistFromToolSection(toolPath, segmentName, sectionName):
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"""Reads a dictionary property list from the specified section within the specified executable."""
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# Run otool -s to get a hex dump of the section.
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args = [
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# "false",
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"otool",
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"-s",
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segmentName,
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sectionName,
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toolPath
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]
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try:
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plistDump = subprocess.check_output(args)
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except subprocess.CalledProcessError, e:
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raise CheckException("tool %s / %s section unreadable" % (segmentName, sectionName), toolPath)
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# Convert that hex dump to an property list.
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plistLines = plistDump.splitlines()
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if len(plistLines) < 3 or plistLines[1] != ("Contents of (%s,%s) section" % (segmentName, sectionName)):
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raise CheckException("tool %s / %s section dump malformed (1)" % (segmentName, sectionName), toolPath)
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del plistLines[0:2]
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try:
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bytes = []
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for line in plistLines:
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# line looks like this:
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#
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# '0000000100000b80\t3c 3f 78 6d 6c 20 76 65 72 73 69 6f 6e 3d 22 31 '
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columns = line.split("\t")
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assert len(columns) == 2
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for hexStr in columns[1].split():
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bytes.append(int(hexStr, 16))
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plist = plistlib.readPlistFromString(bytearray(bytes))
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except:
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raise CheckException("tool %s / %s section dump malformed (2)" % (segmentName, sectionName), toolPath)
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# Check the root of the property list.
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if not isinstance(plist, dict):
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raise CheckException("tool %s / %s property list root must be a dictionary" % (segmentName, sectionName), toolPath)
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return plist
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def checkStep1(appPath):
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"""Checks that the app and the tool are both correctly code signed."""
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if not os.path.isdir(appPath):
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raise CheckException("app not found", appPath)
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# Check the app's code signature.
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checkCodeSignature(appPath, "app")
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# Check the tool directory.
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toolDirPath = os.path.join(appPath, "Contents", "Library", "LaunchServices")
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if not os.path.isdir(toolDirPath):
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raise CheckException("tool directory not found", toolDirPath)
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# Check each tool's code signature.
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toolPathList = []
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for toolName in os.listdir(toolDirPath):
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if toolName != ".DS_Store":
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toolPath = os.path.join(toolDirPath, toolName)
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if not os.path.isfile(toolPath):
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raise CheckException("tool directory contains a directory", toolPath)
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checkCodeSignature(toolPath, "tool")
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toolPathList.append(toolPath)
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# Check that we have at least one tool.
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if len(toolPathList) == 0:
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raise CheckException("no tools found", toolDirPath)
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return toolPathList
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def checkStep2(appPath, toolPathList):
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"""Checks the SMPrivilegedExecutables entry in the app's "Info.plist"."""
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# Create a map from the tool name (not path) to its designated requirement.
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toolNameToReqMap = dict()
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for toolPath in toolPathList:
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req = readDesignatedRequirement(toolPath, "tool")
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toolNameToReqMap[os.path.basename(toolPath)] = req
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# Read the Info.plist for the app and extract the SMPrivilegedExecutables value.
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infoPath = os.path.join(appPath, "Contents", "Info.plist")
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info = readInfoPlistFromPath(infoPath)
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if not info.has_key("SMPrivilegedExecutables"):
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raise CheckException("'SMPrivilegedExecutables' not found", infoPath)
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infoToolDict = info["SMPrivilegedExecutables"]
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if not isinstance(infoToolDict, dict):
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raise CheckException("'SMPrivilegedExecutables' must be a dictionary", infoPath)
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# Check that the list of tools matches the list of SMPrivilegedExecutables entries.
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if sorted(infoToolDict.keys()) != sorted(toolNameToReqMap.keys()):
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raise CheckException("'SMPrivilegedExecutables' and tools in 'Contents/Library/LaunchServices' don't match")
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# Check that all the requirements match.
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# This is an interesting policy choice. Technically the tool just needs to match
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# the requirement listed in SMPrivilegedExecutables, and we can check that by
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# putting the requirement into tmp.req and then running
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#
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# $ codesign -v -R tmp.req /path/to/tool
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#
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# However, for a Developer ID signed tool we really want to have the SMPrivilegedExecutables
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# entry contain the tool's designated requirement because Xcode has built a
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# more complex DR that does lots of useful and important checks. So, as a matter
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# of policy we require that the value in SMPrivilegedExecutables match the tool's DR.
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for toolName in infoToolDict:
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if infoToolDict[toolName] != toolNameToReqMap[toolName]:
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raise CheckException("tool designated requirement (%s) doesn't match entry in 'SMPrivilegedExecutables' (%s)" % (toolNameToReqMap[toolName], infoToolDict[toolName]))
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def checkStep3(appPath, toolPathList):
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"""Checks the "Info.plist" embedded in each helper tool."""
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# First get the app's designated requirement.
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appReq = readDesignatedRequirement(appPath, "app")
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# Then check that the tool's SMAuthorizedClients value matches it.
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for toolPath in toolPathList:
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info = readPlistFromToolSection(toolPath, "__TEXT", "__info_plist")
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if not info.has_key("CFBundleInfoDictionaryVersion") or info["CFBundleInfoDictionaryVersion"] != "6.0":
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raise CheckException("'CFBundleInfoDictionaryVersion' in tool __TEXT / __info_plist section must be '6.0'", toolPath)
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if not info.has_key("CFBundleIdentifier") or info["CFBundleIdentifier"] != os.path.basename(toolPath):
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raise CheckException("'CFBundleIdentifier' in tool __TEXT / __info_plist section must match tool name", toolPath)
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if not info.has_key("SMAuthorizedClients"):
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raise CheckException("'SMAuthorizedClients' in tool __TEXT / __info_plist section not found", toolPath)
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infoClientList = info["SMAuthorizedClients"]
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if not isinstance(infoClientList, list):
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raise CheckException("'SMAuthorizedClients' in tool __TEXT / __info_plist section must be an array", toolPath)
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if len(infoClientList) != 1:
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raise CheckException("'SMAuthorizedClients' in tool __TEXT / __info_plist section must have one entry", toolPath)
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# Again, as a matter of policy we require that the SMAuthorizedClients entry must
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# match exactly the designated requirement of the app.
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if infoClientList[0] != appReq:
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raise CheckException("app designated requirement (%s) doesn't match entry in 'SMAuthorizedClients' (%s)" % (appReq, infoClientList[0]), toolPath)
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def checkStep4(appPath, toolPathList):
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"""Checks the "launchd.plist" embedded in each helper tool."""
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for toolPath in toolPathList:
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launchd = readPlistFromToolSection(toolPath, "__TEXT", "__launchd_plist")
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if not launchd.has_key("Label") or launchd["Label"] != os.path.basename(toolPath):
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raise CheckException("'Label' in tool __TEXT / __launchd_plist section must match tool name", toolPath)
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# We don't need to check that the label matches the bundle identifier because
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# we know it matches the tool name and step 4 checks that the tool name matches
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# the bundle identifier.
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def checkStep5(appPath):
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"""There's nothing to do here; we effectively checked for this is steps 1 and 2."""
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pass
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def check(appPath):
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"""Checks the SMJobBless setup of the specified app."""
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# Each of the following steps matches a bullet point in the SMJobBless header doc.
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toolPathList = checkStep1(appPath)
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checkStep2(appPath, toolPathList)
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checkStep3(appPath, toolPathList)
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checkStep4(appPath, toolPathList)
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checkStep5(appPath)
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def setreq(appPath, appInfoPlistPath, toolInfoPlistPaths):
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"""
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Reads information from the built app and uses it to set the SMJobBless setup
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in the specified app and tool Info.plist source files.
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"""
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if not os.path.isdir(appPath):
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raise CheckException("app not found", appPath)
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if not os.path.isfile(appInfoPlistPath):
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raise CheckException("app 'Info.plist' not found", appInfoPlistPath)
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for toolInfoPlistPath in toolInfoPlistPaths:
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if not os.path.isfile(toolInfoPlistPath):
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raise CheckException("app 'Info.plist' not found", toolInfoPlistPath)
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# Get the designated requirement for the app and each of the tools.
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appReq = readDesignatedRequirement(appPath, "app")
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toolDirPath = os.path.join(appPath, "Contents", "Library", "LaunchServices")
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if not os.path.isdir(toolDirPath):
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raise CheckException("tool directory not found", toolDirPath)
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toolNameToReqMap = {}
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for toolName in os.listdir(toolDirPath):
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req = readDesignatedRequirement(os.path.join(toolDirPath, toolName), "tool")
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toolNameToReqMap[toolName] = req
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if len(toolNameToReqMap) > len(toolInfoPlistPaths):
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raise CheckException("tool directory has more tools (%d) than you've supplied tool 'Info.plist' paths (%d)" % (len(toolNameToReqMap), len(toolInfoPlistPaths)), toolDirPath)
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if len(toolNameToReqMap) < len(toolInfoPlistPaths):
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raise CheckException("tool directory has fewer tools (%d) than you've supplied tool 'Info.plist' paths (%d)" % (len(toolNameToReqMap), len(toolInfoPlistPaths)), toolDirPath)
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# Build the new value for SMPrivilegedExecutables.
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|
|
||
|
|
appToolDict = {}
|
||
|
|
toolInfoPlistPathToToolInfoMap = {}
|
||
|
|
for toolInfoPlistPath in toolInfoPlistPaths:
|
||
|
|
toolInfo = readInfoPlistFromPath(toolInfoPlistPath)
|
||
|
|
toolInfoPlistPathToToolInfoMap[toolInfoPlistPath] = toolInfo
|
||
|
|
if not toolInfo.has_key("CFBundleIdentifier"):
|
||
|
|
raise CheckException("'CFBundleIdentifier' not found", toolInfoPlistPath)
|
||
|
|
bundleID = toolInfo["CFBundleIdentifier"]
|
||
|
|
if not isinstance(bundleID, basestring):
|
||
|
|
raise CheckException("'CFBundleIdentifier' must be a string", toolInfoPlistPath)
|
||
|
|
appToolDict[bundleID] = toolNameToReqMap[bundleID]
|
||
|
|
|
||
|
|
# Set the SMPrivilegedExecutables value in the app "Info.plist".
|
||
|
|
|
||
|
|
appInfo = readInfoPlistFromPath(appInfoPlistPath)
|
||
|
|
needsUpdate = not appInfo.has_key("SMPrivilegedExecutables")
|
||
|
|
if not needsUpdate:
|
||
|
|
oldAppToolDict = appInfo["SMPrivilegedExecutables"]
|
||
|
|
if not isinstance(oldAppToolDict, dict):
|
||
|
|
raise CheckException("'SMPrivilegedExecutables' must be a dictionary", appInfoPlistPath)
|
||
|
|
appToolDictSorted = sorted(appToolDict.iteritems(), key=operator.itemgetter(0))
|
||
|
|
oldAppToolDictSorted = sorted(oldAppToolDict.iteritems(), key=operator.itemgetter(0))
|
||
|
|
needsUpdate = (appToolDictSorted != oldAppToolDictSorted)
|
||
|
|
|
||
|
|
if needsUpdate:
|
||
|
|
appInfo["SMPrivilegedExecutables"] = appToolDict
|
||
|
|
plistlib.writePlist(appInfo, appInfoPlistPath)
|
||
|
|
print >> sys.stdout, "%s: updated" % appInfoPlistPath
|
||
|
|
|
||
|
|
# Set the SMAuthorizedClients value in each tool's "Info.plist".
|
||
|
|
|
||
|
|
toolAppListSorted = [ appReq ] # only one element, so obviously sorted (-:
|
||
|
|
for toolInfoPlistPath in toolInfoPlistPaths:
|
||
|
|
toolInfo = toolInfoPlistPathToToolInfoMap[toolInfoPlistPath]
|
||
|
|
|
||
|
|
needsUpdate = not toolInfo.has_key("SMAuthorizedClients")
|
||
|
|
if not needsUpdate:
|
||
|
|
oldToolAppList = toolInfo["SMAuthorizedClients"]
|
||
|
|
if not isinstance(oldToolAppList, list):
|
||
|
|
raise CheckException("'SMAuthorizedClients' must be an array", toolInfoPlistPath)
|
||
|
|
oldToolAppListSorted = sorted(oldToolAppList)
|
||
|
|
needsUpdate = (toolAppListSorted != oldToolAppListSorted)
|
||
|
|
|
||
|
|
if needsUpdate:
|
||
|
|
toolInfo["SMAuthorizedClients"] = toolAppListSorted
|
||
|
|
plistlib.writePlist(toolInfo, toolInfoPlistPath)
|
||
|
|
print >> sys.stdout, "%s: updated" % toolInfoPlistPath
|
||
|
|
|
||
|
|
def main():
|
||
|
|
options, appArgs = getopt.getopt(sys.argv[1:], "d")
|
||
|
|
|
||
|
|
debug = False
|
||
|
|
for opt, val in options:
|
||
|
|
if opt == "-d":
|
||
|
|
debug = True
|
||
|
|
else:
|
||
|
|
raise UsageException()
|
||
|
|
|
||
|
|
if len(appArgs) == 0:
|
||
|
|
raise UsageException()
|
||
|
|
command = appArgs[0]
|
||
|
|
if command == "check":
|
||
|
|
if len(appArgs) != 2:
|
||
|
|
raise UsageException()
|
||
|
|
check(appArgs[1])
|
||
|
|
elif command == "setreq":
|
||
|
|
if len(appArgs) < 4:
|
||
|
|
raise UsageException()
|
||
|
|
setreq(appArgs[1], appArgs[2], appArgs[3:])
|
||
|
|
else:
|
||
|
|
raise UsageException()
|
||
|
|
|
||
|
|
if __name__ == "__main__":
|
||
|
|
try:
|
||
|
|
main()
|
||
|
|
except CheckException, e:
|
||
|
|
if e.path is None:
|
||
|
|
print >> sys.stderr, "%s: %s" % (os.path.basename(sys.argv[0]), e.message)
|
||
|
|
else:
|
||
|
|
path = e.path
|
||
|
|
if path.endswith("/"):
|
||
|
|
path = path[:-1]
|
||
|
|
print >> sys.stderr, "%s: %s" % (path, e.message)
|
||
|
|
sys.exit(1)
|
||
|
|
except UsageException, e:
|
||
|
|
print >> sys.stderr, "usage: %s check /path/to/app" % os.path.basename(sys.argv[0])
|
||
|
|
print >> sys.stderr, " %s setreq /path/to/app /path/to/app/Info.plist /path/to/tool/Info.plist..." % os.path.basename(sys.argv[0])
|
||
|
|
sys.exit(1)
|