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79 lines
2 KiB
Text
79 lines
2 KiB
Text
---
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title: About the postgres_session Resource
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platform: os
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---
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# postgres_session
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Use the `postgres_session` Chef InSpec audit resource to test SQL commands run against a PostgreSQL database.
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<br>
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## Availability
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### Installation
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This resource is distributed along with Chef InSpec itself. You can use it automatically.
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### Version
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This resource first became available in v1.0.0 of InSpec.
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## Syntax
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A `postgres_session` resource block declares the username and password to use for the session, and then the command to be run:
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# Create a PostgreSQL session:
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sql = postgres_session('username', 'password', 'host')
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# default values:
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# username: 'postgres'
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# host: 'localhost'
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# Run an SQL query with an optional database to execute
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sql.query('sql_query', ['database_name'])`
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A full example is:
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sql = postgres_session('username', 'password', 'host')
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describe sql.query('SELECT * FROM pg_shadow WHERE passwd IS NULL;') do
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its('output') { should eq '' }
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end
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where `its('output') { should eq '' }` compares the results of the query against the expected result in the test
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<br>
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## Examples
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The following examples show how to use this Chef InSpec audit resource.
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### Test the PostgreSQL shadow password
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sql = postgres_session('my_user', 'password', '192.168.1.2')
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describe sql.query('SELECT * FROM pg_shadow WHERE passwd IS NULL;', ['testdb']) do
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its('output') { should eq('') }
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end
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### Test for risky database entries
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describe postgres_session('my_user', 'password').query('SELECT count (*)
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FROM pg_language
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WHERE lanpltrusted = \'f\'
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AND lanname!=\'internal\'
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AND lanname!=\'c\';', ['postgres']) do
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its('output') { should eq '0' }
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end
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<br>
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## Matchers
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For a full list of available matchers, please visit our [matchers page](https://www.inspec.io/docs/reference/matchers/).
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### output
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The `output` matcher tests the results of the query:
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its('output') { should eq(/^0/) }
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