Mercurial > gemma

annotate pkg/auth/store.go @ 4606:dfe9cde6a20c geoserver_sql_views

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Reflect database model changes for SQL views in backend In principle, we could use many datasources with different database schemas, but this would imply changing GeoServer initialization, service filtering, endpoints and eventually more. Since we do not need it, just hard-code the schema name as a constant.
author Tom Gottfried <tom@intevation.de>
date Thu, 05 Sep 2019 12:23:31 +0200
parents 7cccf7fef3e8
children 866eae1bd888
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1017
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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 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 // * Sascha L. Teichmann <sascha.teichmann@intevation.de>
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13
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14 package auth
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15
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16 import (
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17 "bytes"
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18 "errors"
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19 "log"
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20 "time"
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21
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22 "gemma.intevation.de/gemma/pkg/config"
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23 bolt "github.com/etcd-io/bbolt"
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24 )
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25
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26 // ErrNoSuchToken is returned if a given token does not
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27 // exists th the session store.
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28 var ErrNoSuchToken = errors.New("no such token")
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29
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30 // Sessions is the global connection pool.
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31 var Sessions *SessionStore
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32
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33 // SessionStore encapsulates a set of currently active sessions.
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34 type SessionStore struct {
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35 storage *bolt.DB
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36 sessions map[string]*Session
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37 cmds chan func()
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38 }
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39
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40 var sessionsBucket = []byte("sessions")
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41
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42 // NewSessionStore creates a new session store.
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43 // If the filename is empty the session are only hold in memory.
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44 // If the filename is not empty the sessions are mirrored to
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45 // a file with this name. Use the later option if you want
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46 // a persistent session store.
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47 func NewSessionStore(filename string) (*SessionStore, error) {
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48
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49 ss := &SessionStore{
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50 sessions: make(map[string]*Session),
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51 cmds: make(chan func()),
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52 }
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53 if err := ss.openStorage(filename); err != nil {
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54 return nil, err
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55 }
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56 go ss.run()
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57 return ss, nil
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58 }
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59
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60 // openStorage opens a storage file.
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61 func (ss *SessionStore) openStorage(filename string) error {
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62
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63 // No file, nothing to restore/persist.
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64 if filename == "" {
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65 return nil
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66 }
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67
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68 db, err := bolt.Open(filename, 0600, nil)
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69 if err != nil {
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70 return err
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71 }
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72
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73 err = db.Update(func(tx *bolt.Tx) error {
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74 b, err := tx.CreateBucketIfNotExists(sessionsBucket)
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75 if err != nil {
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76 return err
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77 }
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78
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79 // pre-load sessions
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80 c := b.Cursor()
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81
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82 for k, v := c.First(); k != nil; k, v = c.Next() {
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83 var session Session
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84 if err := session.deserialize(bytes.NewReader(v)); err != nil {
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85 return err
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86 }
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87 ss.sessions[string(k)] = &session
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88 }
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89
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90 return nil
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91 })
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92
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93 if err != nil {
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94 db.Close()
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95 return err
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96 }
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97
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98 ss.storage = db
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99 return nil
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100 }
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101
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102 func (ss *SessionStore) run() {
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103 for {
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104 select {
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105 case cmd := <-ss.cmds:
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106 cmd()
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107 case <-time.After(time.Minute * 5):
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108 ss.cleanToken()
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109 }
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110 }
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111 }
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112
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113 func (ss *SessionStore) cleanToken() {
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114 now := time.Now()
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115 for token, session := range ss.sessions {
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116 expires := time.Unix(session.ExpiresAt, 0)
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117 if expires.Before(now) {
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118 delete(ss.sessions, token)
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119 ss.remove(token)
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120 }
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121 }
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122 }
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123
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124 func (ss *SessionStore) remove(token string) {
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125 if ss.storage == nil {
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126 return
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127 }
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128 err := ss.storage.Update(func(tx *bolt.Tx) error {
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129 b := tx.Bucket(sessionsBucket)
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diff changeset
130 return b.Delete([]byte(token))
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diff changeset
131 })
8426a92fda00 Persistent session store: Implmented Renew.
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parents: 199
diff changeset
132 if err != nil {
8426a92fda00 Persistent session store: Implmented Renew.
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diff changeset
133 log.Printf("error: %v\n", err)
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parents: 199
diff changeset
134 }
8426a92fda00 Persistent session store: Implmented Renew.
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parents: 199
diff changeset
135 }
8426a92fda00 Persistent session store: Implmented Renew.
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diff changeset
136
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9e0beb373690 Added comments how to use the session store.
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diff changeset
137 // Delete removes a session identified by its token from the
9e0beb373690 Added comments how to use the session store.
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parents: 1342
diff changeset
138 // session store. Returns true if there was such s session.
513
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
139 func (ss *SessionStore) Delete(token string) bool {
193
1585c334e8a7 More on persisting sessions.
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parents: 190
diff changeset
140 res := make(chan bool)
513
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
141 ss.cmds <- func() {
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parents: 498
diff changeset
142 if _, found := ss.sessions[token]; !found {
193
1585c334e8a7 More on persisting sessions.
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parents: 190
diff changeset
143 res <- false
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parents: 190
diff changeset
144 return
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parents: 190
diff changeset
145 }
513
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
146 delete(ss.sessions, token)
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
147 ss.remove(token)
193
1585c334e8a7 More on persisting sessions.
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parents: 190
diff changeset
148 res <- true
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parents: 190
diff changeset
149 }
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parents: 190
diff changeset
150 return <-res
190
3457a60fb12d Added stub for a persistent session store.
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parents:
diff changeset
151 }
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parents:
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152
513
b6796cd91604 Simplified the function channel inside the session store.
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diff changeset
153 func (ss *SessionStore) store(token string, session *Session) {
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parents: 498
diff changeset
154 if ss.storage == nil {
204
3d0988d9f867 De-virtualize the connection pool implementation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 203
diff changeset
155 return
3d0988d9f867 De-virtualize the connection pool implementation.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 203
diff changeset
156 }
513
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
157 err := ss.storage.Update(func(tx *bolt.Tx) error {
200
8426a92fda00 Persistent session store: Implmented Renew.
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parents: 199
diff changeset
158 b := tx.Bucket(sessionsBucket)
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parents: 199
diff changeset
159 var buf bytes.Buffer
498
22e1bf563a04 Throw away the connection level for sessions.
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parents: 495
diff changeset
160 if err := session.serialize(&buf); err != nil {
200
8426a92fda00 Persistent session store: Implmented Renew.
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parents: 199
diff changeset
161 return err
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parents: 199
diff changeset
162 }
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parents: 199
diff changeset
163 return b.Put([]byte(token), buf.Bytes())
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parents: 199
diff changeset
164 })
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parents: 199
diff changeset
165 if err != nil {
8426a92fda00 Persistent session store: Implmented Renew.
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parents: 199
diff changeset
166 log.Printf("error: %v\n", err)
8426a92fda00 Persistent session store: Implmented Renew.
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parents: 199
diff changeset
167 }
8426a92fda00 Persistent session store: Implmented Renew.
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parents: 199
diff changeset
168 }
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parents: 199
diff changeset
169
1343
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diff changeset
170 // Add puts a session into the session store identified by
9e0beb373690 Added comments how to use the session store.
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parents: 1342
diff changeset
171 // a given token. An old session with the same key will
9e0beb373690 Added comments how to use the session store.
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parents: 1342
diff changeset
172 // be replaced.
513
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
173 func (ss *SessionStore) Add(token string, session *Session) {
b6796cd91604 Simplified the function channel inside the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 498
diff changeset
174 res := make(chan struct{})
199
ddc7ef95c247 Implemented Add of persistent sessions.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 197
diff changeset
175
513
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
176 ss.cmds <- func() {
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
177 defer close(res)
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
178 s := ss.sessions[token]
498
22e1bf563a04 Throw away the connection level for sessions.
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parents: 495
diff changeset
179 if s == nil {
22e1bf563a04 Throw away the connection level for sessions.
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diff changeset
180 s = session
513
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
181 ss.sessions[token] = session
199
ddc7ef95c247 Implemented Add of persistent sessions.
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parents: 197
diff changeset
182 }
498
22e1bf563a04 Throw away the connection level for sessions.
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parents: 495
diff changeset
183 s.touch()
513
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
184 ss.store(token, s)
199
ddc7ef95c247 Implemented Add of persistent sessions.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 197
diff changeset
185 }
ddc7ef95c247 Implemented Add of persistent sessions.
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parents: 197
diff changeset
186
513
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
187 <-res
190
3457a60fb12d Added stub for a persistent session store.
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parents:
diff changeset
188 }
3457a60fb12d Added stub for a persistent session store.
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parents:
diff changeset
189
1343
9e0beb373690 Added comments how to use the session store.
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parents: 1342
diff changeset
190 // Renew refreshes a session. It takes an old token to
9e0beb373690 Added comments how to use the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1342
diff changeset
191 // identify a session and returns a new token with the
9e0beb373690 Added comments how to use the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1342
diff changeset
192 // freshed up one.
513
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
193 func (ss *SessionStore) Renew(token string) (string, error) {
200
8426a92fda00 Persistent session store: Implmented Renew.
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parents: 199
diff changeset
194
8426a92fda00 Persistent session store: Implmented Renew.
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parents: 199
diff changeset
195 type result struct {
8426a92fda00 Persistent session store: Implmented Renew.
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parents: 199
diff changeset
196 newToken string
8426a92fda00 Persistent session store: Implmented Renew.
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parents: 199
diff changeset
197 err error
8426a92fda00 Persistent session store: Implmented Renew.
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parents: 199
diff changeset
198 }
8426a92fda00 Persistent session store: Implmented Renew.
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parents: 199
diff changeset
199
8426a92fda00 Persistent session store: Implmented Renew.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 199
diff changeset
200 resCh := make(chan result)
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parents: 199
diff changeset
201
513
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
202 ss.cmds <- func() {
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
203 session := ss.sessions[token]
498
22e1bf563a04 Throw away the connection level for sessions.
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parents: 495
diff changeset
204 if session == nil {
200
8426a92fda00 Persistent session store: Implmented Renew.
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parents: 199
diff changeset
205 resCh <- result{err: ErrNoSuchToken}
8426a92fda00 Persistent session store: Implmented Renew.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 199
diff changeset
206 } else {
513
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
207 delete(ss.sessions, token)
b6796cd91604 Simplified the function channel inside the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 498
diff changeset
208 ss.remove(token)
1342
20b9c3f261db Added comments how to create a new session for a given user and password.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1017
diff changeset
209 newToken := generateSessionKey()
200
8426a92fda00 Persistent session store: Implmented Renew.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 199
diff changeset
210 // TODO: Ensure that this is not racy!
2639
0db742c7813d Make session timeout configurable
Tom Gottfried <tom@intevation.de>
parents: 1343
diff changeset
211 session.ExpiresAt = time.Now().Add(config.SessionTimeout()).Unix()
513
b6796cd91604 Simplified the function channel inside the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 498
diff changeset
212 ss.sessions[newToken] = session
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
213 ss.store(newToken, session)
200
8426a92fda00 Persistent session store: Implmented Renew.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 199
diff changeset
214 resCh <- result{newToken: newToken}
8426a92fda00 Persistent session store: Implmented Renew.
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parents: 199
diff changeset
215 }
8426a92fda00 Persistent session store: Implmented Renew.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 199
diff changeset
216 }
8426a92fda00 Persistent session store: Implmented Renew.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 199
diff changeset
217
8426a92fda00 Persistent session store: Implmented Renew.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 199
diff changeset
218 r := <-resCh
8426a92fda00 Persistent session store: Implmented Renew.
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parents: 199
diff changeset
219 return r.newToken, r.err
190
3457a60fb12d Added stub for a persistent session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
220 }
3457a60fb12d Added stub for a persistent session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
221
1343
9e0beb373690 Added comments how to use the session store.
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parents: 1342
diff changeset
222 // Session returns the session associated with given token.
9e0beb373690 Added comments how to use the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1342
diff changeset
223 // Returns nil if no matching session was found.
513
b6796cd91604 Simplified the function channel inside the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 498
diff changeset
224 func (ss *SessionStore) Session(token string) *Session {
202
dba50c51cda7 Persistent session store: Implemented Session.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 201
diff changeset
225 res := make(chan *Session)
513
b6796cd91604 Simplified the function channel inside the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 498
diff changeset
226 ss.cmds <- func() {
b6796cd91604 Simplified the function channel inside the session store.
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parents: 498
diff changeset
227 session := ss.sessions[token]
498
22e1bf563a04 Throw away the connection level for sessions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 495
diff changeset
228 if session == nil {
202
dba50c51cda7 Persistent session store: Implemented Session.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 201
diff changeset
229 res <- nil
dba50c51cda7 Persistent session store: Implemented Session.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 201
diff changeset
230 } else {
498
22e1bf563a04 Throw away the connection level for sessions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 495
diff changeset
231 session.touch()
513
b6796cd91604 Simplified the function channel inside the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 498
diff changeset
232 ss.store(token, session)
498
22e1bf563a04 Throw away the connection level for sessions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 495
diff changeset
233 res <- session
202
dba50c51cda7 Persistent session store: Implemented Session.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 201
diff changeset
234 }
dba50c51cda7 Persistent session store: Implemented Session.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 201
diff changeset
235 }
dba50c51cda7 Persistent session store: Implemented Session.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 201
diff changeset
236 return <-res
190
3457a60fb12d Added stub for a persistent session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
237 }
3457a60fb12d Added stub for a persistent session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
238
1343
9e0beb373690 Added comments how to use the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1342
diff changeset
239 // Logout removes all sessions of a given user from the session store.
513
b6796cd91604 Simplified the function channel inside the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 498
diff changeset
240 func (ss *SessionStore) Logout(user string) {
b6796cd91604 Simplified the function channel inside the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 498
diff changeset
241 ss.cmds <- func() {
b6796cd91604 Simplified the function channel inside the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 498
diff changeset
242 for token, session := range ss.sessions {
498
22e1bf563a04 Throw away the connection level for sessions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 495
diff changeset
243 if session.User == user {
513
b6796cd91604 Simplified the function channel inside the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 498
diff changeset
244 delete(ss.sessions, token)
b6796cd91604 Simplified the function channel inside the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 498
diff changeset
245 ss.remove(token)
240
9012e4045da4 Implemented /user delete controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 220
diff changeset
246 }
9012e4045da4 Implemented /user delete controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 220
diff changeset
247 }
9012e4045da4 Implemented /user delete controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 220
diff changeset
248 }
9012e4045da4 Implemented /user delete controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 220
diff changeset
249 }
9012e4045da4 Implemented /user delete controller.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 220
diff changeset
250
1343
9e0beb373690 Added comments how to use the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1342
diff changeset
251 // Shutdown closes the session store.
9e0beb373690 Added comments how to use the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 1342
diff changeset
252 // If using the persistent mode the backing session database is closed.
513
b6796cd91604 Simplified the function channel inside the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 498
diff changeset
253 func (ss *SessionStore) Shutdown() error {
b6796cd91604 Simplified the function channel inside the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 498
diff changeset
254 if db := ss.storage; db != nil {
614
be8b79109679 Fixed textual oversight from the session store refactoring.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 527
diff changeset
255 log.Println("info: shutdown persistent session store.")
513
b6796cd91604 Simplified the function channel inside the session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 498
diff changeset
256 ss.storage = nil
193
1585c334e8a7 More on persisting sessions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 190
diff changeset
257 return db.Close()
1585c334e8a7 More on persisting sessions.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 190
diff changeset
258 }
614
be8b79109679 Fixed textual oversight from the session store refactoring.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 527
diff changeset
259 log.Println("info: shutdown in-memory session store.")
190
3457a60fb12d Added stub for a persistent session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
260 return nil
3457a60fb12d Added stub for a persistent session store.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
261 }