Mercurial > gemma

annotate schema/manage_users.sql @ 4936:21a48e2d2260 fairway-marks-import

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Create group layers in GeoServer via REST calls.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Mon, 17 Feb 2020 00:45:21 +0100
parents 2440d2f86f4e
children 388947a3050d
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1 -- This is Free Software under GNU Affero General Public License v >= 3.0
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2 -- without warranty, see README.md and license for details.
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3
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4 -- SPDX-License-Identifier: AGPL-3.0-or-later
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5 -- License-Filename: LICENSES/AGPL-3.0.txt
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6
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7 -- Copyright (C) 2018, 2019 by via donau
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8 -- – Österreichische Wasserstraßen-Gesellschaft mbH
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9 -- Software engineering by Intevation GmbH
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10
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11 -- Author(s):
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12 -- * Tom Gottfried <tom@intevation.de>
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13 -- * Sacha Teichmann <sascha.teichmann@intevation.de>
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15 --
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16 -- Functions encapsulating user management functionality and
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17 -- exposing it to appropriately privileged users
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18 --
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19
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20 CREATE OR REPLACE FUNCTION internal.check_password(
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21 pw varchar
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22 )
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23 RETURNS varchar
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24 AS $$
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25 DECLARE
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26 min_len CONSTANT int = 8;
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27 BEGIN
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28 IF char_length(pw) < min_len
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29 OR pw NOT SIMILAR TO '%[^[:alnum:]]%'
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30 OR pw NOT SIMILAR TO '%[[:digit:]]%'
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31 THEN
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32 RAISE invalid_password USING MESSAGE = 'Invalid password';
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33 ELSE
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34 RETURN pw;
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35 END IF;
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36 END;
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37 $$
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38 LANGUAGE plpgsql;
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39
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40
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41 CREATE OR REPLACE FUNCTION users.current_user_area_utm()
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42 RETURNS geometry
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43 AS $$
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44 DECLARE utm_area geometry;
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45 BEGIN
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46 SELECT ST_Union(ST_Transform(area::geometry, z))
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47 INTO STRICT utm_area
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48 FROM (SELECT area,
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49 best_utm(ST_Collect(area::geometry) OVER ()) AS z
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50 FROM users.stretches st
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51 JOIN users.stretch_countries stc
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52 ON stc.stretch_id = st.id
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53 WHERE country = (SELECT country
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54 FROM users.list_users
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55 WHERE username = current_user)) AS st;
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56 RETURN utm_area;
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57 END;
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58 $$
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59 LANGUAGE plpgsql
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60 STABLE PARALLEL SAFE;
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61
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62
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63 CREATE OR REPLACE FUNCTION users.utm_covers(g geography) RETURNS boolean AS
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64 $$
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65 SELECT ST_Covers(a, ST_Transform(g::geometry, ST_SRID(a)))
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66 FROM users.current_user_area_utm() AS a (a)
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67 $$
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68 LANGUAGE SQL
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69 STABLE PARALLEL SAFE;
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70
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71
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72 CREATE OR REPLACE FUNCTION internal.create_user() RETURNS trigger
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73 AS $$
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74 BEGIN
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75 IF NEW.map_extent IS NULL
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76 THEN
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77 NEW.map_extent = ST_Extent(CAST(area AS geometry))
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78 FROM users.stretches st
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79 JOIN users.stretch_countries stc ON stc.stretch_id = st.id
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80 WHERE stc.country = NEW.country;
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81 END IF;
4723
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82
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83 IF NEW.username IS NOT NULL
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84 -- otherwise let the constraint on user_profiles speak
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85 THEN
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86 EXECUTE format(
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87 'CREATE ROLE %I IN ROLE %I LOGIN PASSWORD %L',
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88 NEW.username,
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89 NEW.rolname,
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90 internal.check_password(NEW.pw));
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91 END IF;
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92
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93 INSERT INTO internal.user_profiles (
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94 username, country, map_extent, email_address)
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95 VALUES (NEW.username, NEW.country, NEW.map_extent, NEW.email_address);
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96
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97 -- Do not leak new password
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98 NEW.pw = '';
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99 RETURN NEW;
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100 END;
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101 $$
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102 LANGUAGE plpgsql
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103 SECURITY DEFINER;
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104
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105 CREATE TRIGGER create_user INSTEAD OF INSERT ON users.list_users FOR EACH ROW
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106 EXECUTE PROCEDURE internal.create_user();
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107
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108 CREATE OR REPLACE FUNCTION internal.update_metamorph() RETURNS trigger
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109 AS $$
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110 BEGIN
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111 EXECUTE format('GRANT %I TO metamorph', NEW.username);
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112 RETURN NEW;
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113 END;
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114 $$
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115 LANGUAGE plpgsql
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116 SECURITY DEFINER;
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117
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118 -- Note that PostgreSQL fires triggers for the same event in alphabetical
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119 -- order! Make sure that the new role is created before this trigger is fired.
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120 CREATE TRIGGER update_metamorph INSTEAD OF INSERT ON users.list_users
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121 FOR EACH ROW
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122 EXECUTE PROCEDURE internal.update_metamorph();
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123
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124
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125 -- Prevent roles other than sys_admin to update any user but
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126 -- themselves (affects waterway_admin)
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127 CREATE OR REPLACE FUNCTION internal.authorize_update_user() RETURNS trigger
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128 AS $$
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129 BEGIN
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130 IF OLD.username <> current_user
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131 AND NOT pg_has_role('sys_admin', 'MEMBER')
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132 THEN
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133 RETURN NULL;
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134 ELSE
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135 RETURN NEW;
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136 END IF;
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137 END;
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138 $$
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139 LANGUAGE plpgsql;
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140
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141 -- Note that PostgreSQL fires triggers for the same event in alphabetical
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142 -- order! Make sure that authorization takes place before any other trigger
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143 -- is fired that might execute otherwise unauthorized statements!
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144 CREATE TRIGGER authorize_update_user INSTEAD OF UPDATE ON users.list_users
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145 FOR EACH ROW
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146 EXECUTE PROCEDURE internal.authorize_update_user();
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147
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148
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149 CREATE OR REPLACE FUNCTION internal.update_user() RETURNS trigger
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150 AS $$
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151 DECLARE
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152 cur_username varchar;
225
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153 BEGIN
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154 cur_username = OLD.username;
225
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155
307
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156 IF NEW.username <> cur_username
225
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157 THEN
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158 EXECUTE format(
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159 'ALTER ROLE %I RENAME TO %I', cur_username, NEW.username);
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160 cur_username = NEW.username;
225
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161 END IF;
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162
4723
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163 UPDATE internal.user_profiles p
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164 SET (username, country, map_extent, email_address)
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165 = (NEW.username, NEW.country, NEW.map_extent, NEW.email_address)
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166 WHERE p.username = cur_username;
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167
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168 IF NEW.rolname <> OLD.rolname
225
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169 THEN
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170 EXECUTE format(
307
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171 'REVOKE %I FROM %I', OLD.rolname, cur_username);
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172 EXECUTE format(
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173 'GRANT %I TO %I', NEW.rolname, cur_username);
225
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174 END IF;
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175
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176 IF NEW.pw IS NOT NULL AND NEW.pw <> ''
225
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177 THEN
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178 EXECUTE format(
262
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179 'ALTER ROLE %I PASSWORD %L',
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180 cur_username,
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181 internal.check_password(NEW.pw));
225
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182 END IF;
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183
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184 -- Do not leak new password
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185 NEW.pw = '';
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186 RETURN NEW;
225
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187 END;
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188 $$
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189 LANGUAGE plpgsql
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190 SECURITY DEFINER;
232
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191
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192 CREATE TRIGGER update_user INSTEAD OF UPDATE ON users.list_users FOR EACH ROW
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193 EXECUTE PROCEDURE internal.update_user();
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194
232
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195
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196 CREATE OR REPLACE FUNCTION internal.delete_user() RETURNS trigger
232
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197 AS $$
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198 DECLARE
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199 bid int;
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200 BEGIN
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201 -- Terminate the users backends started before the current transaction
342
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202 FOR bid IN SELECT pid FROM pg_stat_activity WHERE usename = OLD.username
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203 LOOP
232
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204 PERFORM pg_terminate_backend(bid);
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205 END LOOP;
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206 -- Note that any backend that might be started during the transaction
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207 -- in which this function is executed will not be terminated but lost
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208 -- without any privileges after commiting this transaction
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209
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210 -- Delete user
342
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211 EXECUTE format('DROP ROLE %I', OLD.username);
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212 DELETE FROM internal.user_profiles p
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213 WHERE p.username = OLD.username;
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214
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215 RETURN OLD;
232
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216 END;
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217 $$
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218 LANGUAGE plpgsql
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219 SECURITY DEFINER;
319
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220
342
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221 CREATE TRIGGER delete_user INSTEAD OF DELETE ON users.list_users FOR EACH ROW
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222 EXECUTE PROCEDURE internal.delete_user();
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223
319
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224
467
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225 -- To set a role from a hex-encoded user name (which is save from SQL injections).
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226 CREATE OR REPLACE FUNCTION public.setrole(role text) RETURNS void
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227 AS $$
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228 BEGIN
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229 IF role IS NOT NULL AND role <> '' THEN
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230 EXECUTE format('SET ROLE %I', convert_from(decode(role, 'hex'), 'UTF-8'));
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231 END IF;
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232 END;
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233 $$
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234 LANGUAGE plpgsql;
468
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235
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236 -- To set a role in form of a plannable statement (which is save from SQL injections).
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237 CREATE OR REPLACE FUNCTION public.setrole_plan(role text) RETURNS void
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238 AS $$
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239 BEGIN
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240 IF role IS NOT NULL AND role <> '' THEN
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241 EXECUTE format('SET ROLE %I', role);
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242 END IF;
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parents: 467
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243 END;
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parents: 467
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244 $$
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245 LANGUAGE plpgsql;