126 lines
3.9 KiB
Python
126 lines
3.9 KiB
Python
#!/usr/bin/env python
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#
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# Copyright (C) 2022 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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"""Package <-> UID <-> Process mapper."""
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import re
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# ex) Name: init
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PROC_STATUS_NAME_LINE = r"Name:\s+(\S+)"
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# ex) Pid: 1
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PROC_STATUS_PID_LINE = r"Pid:\s+([0-9]+)"
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# ex) Uid: 0 0 0 0
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PROC_STATUS_UID_LINE = r"Uid:\s+([0-9]+)\s+([0-9]+)\s+([0-9]+)\s+([0-9]+)"
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# ex) package:com.google.android.car.uxr.sample uid:1000
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PACKAGE_UID_LINE = r"package:(\S+)\suid:([0-9]+)"
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USER_ID_OFFSET = 100000
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AID_APP_START = 10000
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UNKNOWN_UID = -1
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class UidInfo:
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def __init__(self, uid, packageName=None):
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self.uid = uid
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self.packageName = packageName
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def to_string(self):
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appId = int(self.uid % USER_ID_OFFSET)
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if self.uid == UNKNOWN_UID:
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return "UID: UNKNOWN"
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elif self.packageName is None and appId < AID_APP_START:
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return "User ID: {}, Native service AID: {}".format(
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int(self.uid / USER_ID_OFFSET), appId)
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elif self.packageName is None:
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return "User ID: {}, App ID: {}".format(
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int(self.uid / USER_ID_OFFSET), appId)
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else:
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return "User ID: {}, Package name: {}".format(
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int(self.uid / USER_ID_OFFSET), self.packageName)
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class UidProcessMapper:
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def __init__(self):
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self.nameReMatcher = re.compile(PROC_STATUS_NAME_LINE)
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self.pidReMatcher = re.compile(PROC_STATUS_PID_LINE)
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self.uidReMatcher = re.compile(PROC_STATUS_UID_LINE)
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self.packageUidMatcher = re.compile(PACKAGE_UID_LINE)
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self.uidByProcessDict = {} # Key: Process Name, Value: {PID: UID}
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self.packageNameByAppId = {} # Key: App ID, Value: Package name
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def parse_proc_status_dump(self, dump):
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name, pid, uid = "", "", ""
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for line in dump.split("\n"):
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if line.startswith("Name:"):
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name = self.match_re(self.nameReMatcher, line)
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pid, uid = "", ""
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elif line.startswith("Pid:"):
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pid = self.match_re(self.pidReMatcher, line)
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uid = ""
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elif line.startswith("Uid:"):
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uid = self.match_re(self.uidReMatcher, line)
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if name != "" and pid != "" and uid != "":
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self.add_mapping(name, int(pid), int(uid))
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name, pid, uid = "", "", ""
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def parse_uid_package_dump(self, dump):
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for line in dump.split("\n"):
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if line == "":
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continue
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match = self.packageUidMatcher.match(line)
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if (match):
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packageName = match.group(1)
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appId = int(match.group(2))
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if appId in self.packageNameByAppId:
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self.packageNameByAppId[appId].add(packageName)
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else:
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self.packageNameByAppId[appId] = {packageName}
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else:
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print("'{}' line doesn't match '{}' regex".format(
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line, self.packageUidMatcher))
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def match_re(self, reMatcher, line):
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match = reMatcher.match(line)
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if not match:
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return ""
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return match.group(1)
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def add_mapping(self, name, pid, uid):
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if name in self.uidByProcessDict:
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self.uidByProcessDict[name][pid] = uid
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else:
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self.uidByProcessDict[name] = {pid: uid}
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def get_uid(self, name, pid):
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if name in self.uidByProcessDict:
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if pid in self.uidByProcessDict[name]:
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return self.uidByProcessDict[name][pid]
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return UNKNOWN_UID
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def get_uid_info(self, uid):
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appId = uid % USER_ID_OFFSET
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if appId in self.packageNameByAppId:
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return UidInfo(uid, " | ".join(self.packageNameByAppId[appId]))
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else:
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return UidInfo(uid)
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