first commit

.gitignore

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+config/cfg.ini
+__pycache__/

.idea/execNotify.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="jdk" jdkName="Python 3.7 (venv37)" jdkType="Python SDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

.idea/inspectionProfiles/Project_Default.xml

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+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="PyPep8NamingInspection" enabled="true" level="WEAK WARNING" enabled_by_default="true">
+      <option name="ignoredErrors">
+        <list>
+          <option value="N802" />
+          <option value="N803" />
+          <option value="N806" />
+        </list>
+      </option>
+    </inspection_tool>
+  </profile>
+</component>

.idea/inspectionProfiles/profiles_settings.xml

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+<component name="InspectionProjectProfileManager">
+  <settings>
+    <option name="USE_PROJECT_PROFILE" value="false" />
+    <version value="1.0" />
+  </settings>
+</component>

.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.7 (venv37)" project-jdk-type="Python SDK" />
+</project>

.idea/modules.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/execNotify.iml" filepath="$PROJECT_DIR$/.idea/execNotify.iml" />
+    </modules>
+  </component>
+</project>

.idea/workspace.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ChangeListManager">
+    <list default="true" id="066dfbfd-85ed-456f-9525-253ec03fa96b" name="Default Changelist" comment="">
+      <change afterPath="$PROJECT_DIR$/.gitignore" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/.gitignore" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/execNotify.iml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/inspectionProfiles/Project_Default.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/inspectionProfiles/profiles_settings.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/misc.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/modules.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/config.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/config/cfg.ini.example" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/exec.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/execNotify.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/mail.py" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/password.txt" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/util.py" afterDir="false" />
+    </list>
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="FileTemplateManagerImpl">
+    <option name="RECENT_TEMPLATES">
+      <list>
+        <option value="Python Script" />
+      </list>
+    </option>
+  </component>
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
+  </component>
+  <component name="ProjectId" id="1lHIVbTIy9t8txmMM3V80GDBa2N" />
+  <component name="ProjectLevelVcsManager" settingsEditedManually="true" />
+  <component name="ProjectViewState">
+    <option name="hideEmptyMiddlePackages" value="true" />
+    <option name="showLibraryContents" value="true" />
+  </component>
+  <component name="PropertiesComponent">
+    <property name="RunOnceActivity.OpenProjectViewOnStart" value="true" />
+    <property name="RunOnceActivity.ShowReadmeOnStart" value="true" />
+    <property name="WebServerToolWindowFactoryState" value="false" />
+    <property name="last_opened_file_path" value="$PROJECT_DIR$/config" />
+    <property name="node.js.detected.package.eslint" value="true" />
+    <property name="node.js.detected.package.tslint" value="true" />
+    <property name="node.js.path.for.package.eslint" value="project" />
+    <property name="node.js.path.for.package.tslint" value="project" />
+    <property name="node.js.selected.package.eslint" value="(autodetect)" />
+    <property name="node.js.selected.package.tslint" value="(autodetect)" />
+  </component>
+  <component name="RecentsManager">
+    <key name="CopyFile.RECENT_KEYS">
+      <recent name="$PROJECT_DIR$/config" />
+      <recent name="$PROJECT_DIR$" />
+    </key>
+  </component>
+  <component name="RunManager">
+    <configuration name="execNotify" type="PythonConfigurationType" factoryName="Python" temporary="true" nameIsGenerated="true">
+      <module name="execNotify" />
+      <option name="INTERPRETER_OPTIONS" value="" />
+      <option name="PARENT_ENVS" value="true" />
+      <envs>
+        <env name="PYTHONUNBUFFERED" value="1" />
+      </envs>
+      <option name="SDK_HOME" value="" />
+      <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$" />
+      <option name="IS_MODULE_SDK" value="true" />
+      <option name="ADD_CONTENT_ROOTS" value="true" />
+      <option name="ADD_SOURCE_ROOTS" value="true" />
+      <EXTENSION ID="PythonCoverageRunConfigurationExtension" runner="coverage.py" />
+      <option name="SCRIPT_NAME" value="$PROJECT_DIR$/execNotify.py" />
+      <option name="PARAMETERS" value="ls foobar" />
+      <option name="SHOW_COMMAND_LINE" value="false" />
+      <option name="EMULATE_TERMINAL" value="false" />
+      <option name="MODULE_MODE" value="false" />
+      <option name="REDIRECT_INPUT" value="false" />
+      <option name="INPUT_FILE" value="" />
+      <method v="2" />
+    </configuration>
+    <recent_temporary>
+      <list>
+        <item itemvalue="Python.execNotify" />
+      </list>
+    </recent_temporary>
+  </component>
+  <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="application-level" UseSingleDictionary="true" transferred="true" />
+  <component name="TaskManager">
+    <task active="true" id="Default" summary="Default task">
+      <changelist id="066dfbfd-85ed-456f-9525-253ec03fa96b" name="Default Changelist" comment="" />
+      <created>1607247615238</created>
+      <option name="number" value="Default" />
+      <option name="presentableId" value="Default" />
+      <updated>1607247615238</updated>
+      <workItem from="1607247616426" duration="265000" />
+      <workItem from="1607248714632" duration="2640000" />
+      <workItem from="1607251381674" duration="2626000" />
+      <workItem from="1607254060327" duration="231000" />
+      <workItem from="1607254312912" duration="2639000" />
+    </task>
+    <servers />
+  </component>
+  <component name="TypeScriptGeneratedFilesManager">
+    <option name="version" value="3" />
+  </component>
+  <component name="Vcs.Log.Tabs.Properties">
+    <option name="TAB_STATES">
+      <map>
+        <entry key="MAIN">
+          <value>
+            <State />
+          </value>
+        </entry>
+      </map>
+    </option>
+  </component>
+  <component name="com.intellij.coverage.CoverageDataManagerImpl">
+    <SUITE FILE_PATH="coverage/execNotify$execNotify.coverage" NAME="execNotify Coverage Results" MODIFIED="1607256518765" SOURCE_PROVIDER="com.intellij.coverage.DefaultCoverageFileProvider" RUNNER="coverage.py" COVERAGE_BY_TEST_ENABLED="true" COVERAGE_TRACING_ENABLED="false" WORKING_DIRECTORY="$PROJECT_DIR$" />
+  </component>
+</project>

config.py

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+from pathlib import Path
+import configparser
+
+
+def getHostAndPort():
+    return config['mail']['host'], config['mail']['port']
+
+
+def getPassword():
+    return config['mail']['password']
+
+
+def getFrom():
+    return config['mail']['from']  # used for mail login as well
+
+
+def getTo():
+    return config['mail']['to']
+
+
+def getErrorFile() -> Path:
+    return Path(config['file']['errorfile'])
+
+
+def _getCfgFile() -> Path:
+    return _getCfgDir().joinpath('cfg.ini')
+
+
+def _getCfgDir() -> Path:
+    return Path('config')
+
+
+config: configparser.ConfigParser = configparser.ConfigParser()
+config.read(_getCfgFile())

config/cfg.ini.example

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+[DEFAULT]
+
+[mail]
+host = smtp.example.com
+port = 465
+password = examplePassword
+
+from = noreply@example.com
+to = me@example.com
+
+[file]
+errorfile = /home/exampleUser/ERROR.mail

exec.py

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+from typing import List
+import sys
+import subprocess
+
+
+def execute(command: List[str]):
+    """
+    Run the given command in a subprocess and pass stdin (if given) to that process.
+    Wait for command to complete.
+
+    :param command: A command to executed as list of words, e.g. ["echo", "hello"]
+    :return: (status, stdout, stderr)
+    """
+
+    completed: subprocess.CompletedProcess = subprocess.run(
+        command,
+        stdin=sys.stdin,
+        capture_output=True,
+        check=False,
+        text=True
+    )
+    return completed.returncode, completed.stdout, completed.stderr

execNotify.py

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+#!/usr/bin/env python3
+from sys import argv
+import socket
+
+import exec, mail, config
+
+
+def main():
+    prevMailError = checkPrevError()
+    success = executeCommand()
+    if prevMailError:
+        tryToInform()
+
+    if not prevMailError or not success:
+        exit(1)
+    else:
+        exit(0)
+
+
+def executeCommand() -> bool:
+    if len(argv) < 2:
+        return True
+    else:
+        keys = ['command', 'status', 'stderr', 'stdout']
+        code, stdout, stderr = exec.execute(argv[1:])
+        values = [str(argv[1:]), str(code), stderr, stdout]
+
+        BODY = ''
+        for key, value in zip(keys, values):
+            BODY += '=== {} ===\n{}\n'.format(key, value)
+        print(BODY)
+
+        if code != 0:
+            hostname = socket.gethostname()
+
+            SUBJECT = '{} | {}'.format(hostname, str(argv[1:]))
+            mail.sendMailOrWriteToFile(SUBJECT=SUBJECT, BODY=BODY)
+        return False
+
+
+def checkPrevError():
+    return config.getErrorFile().exists()
+
+
+def tryToInform():
+    """
+    Try to inform user via mail about previous error(s) that could not be sent to him before.
+    Maybe this time sending of an email works ;)
+    """
+
+    SUBJECT = '{} | Some mails not sent!'.format(socket.gethostname())
+    BODY = 'Please check the file {} for mails which could previously not be sent to you!\n' \
+           'Note: You may delete the file after reading it ;)'.format(
+        config.getErrorFile())
+    mail.sendMail(SUBJECT=SUBJECT, BODY=BODY)
+
+
+if __name__ == '__main__':
+    main()

mail.py

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+import sys
+import datetime
+import smtplib, ssl
+
+from email.mime.text import MIMEText
+from email.mime.multipart import MIMEMultipart
+from pathlib import Path
+
+import util, config
+
+
+def sendMailOrWriteToFile(SUBJECT: str, BODY: str):
+    try:
+        sendMail(SUBJECT=SUBJECT, BODY=BODY)
+    except Exception as e:
+        print("Error: Could not send mail! Writing to file instead ...", file=sys.stderr)
+        print(e, file=sys.stderr)
+
+        # Instead, try to save the mail so that the user can read
+        # it later when connected to this computer
+        saveMail(SUBJECT=SUBJECT, BODY=BODY)
+
+
+def sendMail(SUBJECT: str, BODY: str):
+    """
+    :throws Exception: if mail could not be sent
+    """
+
+    FROM = config.getFrom()
+    TO = config.getTo()
+    password = config.getPassword()
+
+    # Create a secure SSL context
+    context = ssl.create_default_context()
+
+    host, port = config.getHostAndPort()
+    with smtplib.SMTP_SSL(host=host, port=port, context=context) as server:
+        server.login(FROM, password)
+        message = MIMEMultipart()
+        message["Subject"] = SUBJECT
+        message["From"] = FROM
+        message["To"] = TO
+        message["Bcc"] = TO  # Recommended for mass emails
+        # Turn plain/html message_body into plain/html MIMEText objects
+        message.attach(MIMEText(BODY, "plain"))
+
+        server.sendmail(FROM, TO, message.as_string())
+
+
+def saveMail(SUBJECT: str, BODY: str):
+    """
+    This method does NOT throw exceptions
+    """
+
+    time = datetime.datetime.now()
+    timeStr = time.strftime('%Y%m%d_%H%M%S')
+
+    DATE = '=' * 20 + '\n=== date ===\n' + timeStr + '\n'
+    SUBJECT = '=== subject ===\n' + SUBJECT + '\n'
+
+    try:
+        # append to file; create file if not existent
+        with open(config.getErrorFile(), "a") as f:
+            f.write(DATE)
+            f.write(SUBJECT)
+            f.write(BODY)
+    except Exception as e:
+        print('Error: Could not write to file!', file=sys.stderr)
+        print(e, file=sys.stderr)

password.txt

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+odf48p7k3

util.py

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+from pathlib import Path
+
+
+def readFirstLine(file: Path) -> str:
+    """
+    :param file: Path to file
+    :return: first line of file
+    """
+    with open(file, "r") as f:
+        return f.readline()