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annotate schema/auth.sql @ 177:4e2451d561b1

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Make schema for templates more realistic A print template should be stored with name and timestamp and the template itself will be any data to be interpreted as a template file by a templating engine. Delete relations in user_templates with their parents using CASCADE, because user_templates is only an m:n-table.
author Tom Gottfried <tom@intevation.de>
date Tue, 17 Jul 2018 16:50:16 +0200
parents 3f7053e53fa6
children 382f631d8dd8
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1 BEGIN;
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2
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3 --
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4 -- Roles, privileges and policies for the GEMMA database
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5 --
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6 SET search_path TO public, gemma, gemma_waterway, gemma_fairway;
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7
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8 -- We do not want any users to be able to create any objects
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9 REVOKE CREATE ON SCHEMA public FROM PUBLIC;
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10
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11 --
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12 -- Privileges for waterway_user
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13 --
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14 GRANT USAGE ON SCHEMA gemma, gemma_waterway, gemma_fairway TO waterway_user;
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15 GRANT SELECT ON ALL TABLES IN SCHEMA gemma_waterway, gemma_fairway
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16 TO waterway_user;
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17 GRANT SELECT ON templates, user_templates, user_profiles TO waterway_user;
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19 --
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20 -- Extended privileges for waterway_admin
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21 --
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22 GRANT INSERT, UPDATE ON ALL TABLES IN SCHEMA gemma_waterway, gemma_fairway
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23 TO waterway_admin;
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24 -- TODO: will there ever be UPDATEs or can we drop that due to historicisation?
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25 GRANT INSERT, UPDATE ON templates, user_templates TO waterway_admin;
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26 GRANT SELECT ON responsibility_areas TO waterway_admin;
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27
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28 --
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29 -- Extended privileges for sys_admin
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30 --
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31 GRANT SELECT, INSERT, UPDATE, DELETE ON ALL TABLES IN SCHEMA gemma
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32 TO sys_admin;
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33
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34 --
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35 -- RLS policies for waterway_user
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36 --
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37
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38 -- Staging area
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39 CREATE FUNCTION create_hide_staging_policy() RETURNS void AS $$
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40 DECLARE the_table varchar;
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41 BEGIN
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42 FOREACH the_table IN ARRAY ARRAY[
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43 'bottlenecks', 'sounding_results']
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44 -- TODO: add all relevant tables here
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45 LOOP
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46 EXECUTE format('CREATE POLICY hide_staging ON %I '
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47 'FOR SELECT TO waterway_user USING (staging_done)', the_table);
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48 EXECUTE format('ALTER TABLE %I ENABLE ROW LEVEL SECURITY', the_table);
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49 END LOOP;
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50 END;
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51 $$ LANGUAGE plpgsql;
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52 SELECT create_hide_staging_policy();
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53 DROP FUNCTION create_hide_staging_policy;
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54
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55 CREATE POLICY see_yourself ON user_profiles FOR SELECT TO waterway_user
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56 USING (username = current_user);
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57 ALTER TABLE user_profiles ENABLE ROW LEVEL SECURITY;
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58
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59 CREATE POLICY own_templates ON templates FOR SELECT TO waterway_user
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60 USING (template_name IN(SELECT template_name FROM user_templates
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61 WHERE username = current_user));
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62 ALTER TABLE templates ENABLE ROW LEVEL SECURITY;
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63
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64 --
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65 -- RLS policies for waterway_admin
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66 --
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67
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68 -- Security-definer function to get current users country, which allows to
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69 -- restrict the view on user_profiles by country without infinite recursion
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70 CREATE FUNCTION current_user_country()
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71 RETURNS gemma.user_profiles.country%TYPE
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72 AS $$ SELECT country FROM user_profiles WHERE username = session_user $$
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73 LANGUAGE SQL
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74 SECURITY DEFINER
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75 STABLE PARALLEL SAFE;
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76
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77 -- Staging area
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78 -- TODO: add all relevant tables here
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79 CREATE POLICY responsibility_area ON bottlenecks FOR ALL TO waterway_admin
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80 USING (ST_Within(area, (SELECT area FROM responsibility_areas
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81 WHERE country = current_user_country())));
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82 CREATE POLICY responsibility_area ON sounding_results FOR ALL TO waterway_admin
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83 USING (ST_Within(area, (SELECT area FROM responsibility_areas
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84 WHERE country = current_user_country())));
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85
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86 CREATE POLICY country_profiles ON user_profiles FOR SELECT TO waterway_admin
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87 USING (country = current_user_country());
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88
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89 CREATE POLICY manage_templates ON templates FOR ALL TO waterway_admin
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90 USING (template_name IN(SELECT template_name FROM user_templates ut
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91 JOIN user_profiles p ON ut.username = p.username
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92 WHERE p.country = current_user_country()));
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93
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94 COMMIT;