83 lines
1.7 KiB
Python
83 lines
1.7 KiB
Python
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#!/usr/bin/env python
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import os
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import shutil
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env = os.environ.get
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smtp_settings = [
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('username', ''),
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('password', ''),
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('host', 'localhost'),
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('port', '25'),
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('security', 'none'),
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('to', ''),
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('from', ''),
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]
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required = ['to', 'from']
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settings = env('ISSO_SETTINGS')
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if not settings:
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raise Exception('No ISSO_SETTINGS defined')
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settings = settings.split(';')
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def backup_name(setting):
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return setting + '.bak'
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def purge_backup(setting):
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# if there is a backup file, delete it
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backup_setting = backup_name(setting)
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if os.path.exists(backup_setting):
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try:
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os.remove(backup_setting)
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except OSError:
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pass
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def create_backup(setting):
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# make a backup
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shutil.copyfile(setting, backup_name(setting))
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def load_values():
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values = []
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for name, default in smtp_settings:
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label = 'ISSO_SMTP_%s' % name.upper()
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value = env(label, default)
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if name in required and not value.strip():
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raise Exception('Required environment variable is not set: %s' %
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label)
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values.append([label, value])
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return values
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def replace_placeholders(setting, values):
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with open(setting, 'r') as _file:
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content = _file.read()
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for label, value in values:
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content = content.replace(label, value)
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# make a backup
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create_backup(setting)
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with open(setting, 'w') as _file:
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_file.write(content)
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return content
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def main():
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values = load_values()
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for setting in settings:
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print("Replacing settings %s" % setting)
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replace_placeholders(setting, values)
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if __name__ == '__main__':
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main()
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