Mercurial > gemma

annotate pkg/controllers/pwreset.go @ 493:8a0737aa6ab6 metamorph-for-all

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The connection pool is now only a session store.
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 24 Aug 2018 14:25:05 +0200
parents b2dc9c2f69e0
children c10c76c92797
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1 package controllers
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2
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3 import (
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4 "bytes"
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5 "database/sql"
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6 "encoding/hex"
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7 "log"
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8 "net/http"
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9 "os/exec"
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10 "strings"
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11 "text/template"
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12 "time"
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13
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14 "github.com/gorilla/mux"
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15
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16 "gemma.intevation.de/gemma/pkg/auth"
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17 "gemma.intevation.de/gemma/pkg/common"
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18 "gemma.intevation.de/gemma/pkg/misc"
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19 "gemma.intevation.de/gemma/pkg/models"
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20 )
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22 const (
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23 insertRequestSQL = `INSERT INTO sys_admin.password_reset_requests
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24 (hash, username) VALUES ($1, $2)`
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26 countRequestsSQL = `SELECT count(*) FROM sys_admin.password_reset_requests`
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27
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28 countRequestsUserSQL = `SELECT count(*) FROM sys_admin.password_reset_requests
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29 WHERE username = $1`
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30
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31 deleteRequestSQL = `DELETE FROM sys_admin.password_reset_requests
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32 WHERE hash = $1`
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33
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34 findRequestSQL = `SELECT lu.email_address, lu.username
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35 FROM sys_admin.password_reset_requests prr
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36 JOIN users.list_users lu on prr.username = lu.username
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37 WHERE prr.hash = $1`
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38
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39 cleanupRequestsSQL = `DELETE FROM sys_admin.password_reset_requests
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40 WHERE issued < $1`
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41
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42 userExistsSQL = `SELECT email_address
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43 FROM users.list_users WHERE username = $1`
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44
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45 updatePasswordSQL = `UPDATE users.list_users
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46 SET pw = $1 WHERE username = $2`
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47 )
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49 const (
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50 hashLength = 16
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51 passwordLength = 20
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52 passwordResetValid = 12 * time.Hour
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53 maxPasswordResets = 1000
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54 maxPasswordRequestsPerUser = 5
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55 cleanupPause = 15 * time.Minute
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56 )
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57
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58 const pwResetRole = "sys_admin"
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59
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60 var (
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61 passwordResetRequestMailTmpl = template.Must(
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62 template.New("request").Parse(`You have requested a password change
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63 for your account {{ .User }} on
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64 {{ .HTTPS }}://{{ .Server }}
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66 Please follow this link to get to the page where you can change your password.
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67
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68 {{ .HTTPS }}://{{ .Server }}/api/users/passwordreset/{{ .Hash }}
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70 The link is only valid for 12 hours.
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72 Best regards
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73 Your service team`))
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74
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75 passwordResetMailTmpl = template.Must(
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76 template.New("reset").Parse(`Your password for your account {{ .User }} on
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77 {{ .HTTPS }}://{{ .Server }}
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78
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79 has been changed to
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80 {{ .Password }}
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81
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82 Change it as soon as possible.
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83
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84 Best regards
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85 Your service team`))
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86 )
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87
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88 func init() {
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89 go removeOutdated()
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90 }
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92 func removeOutdated() {
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93 for {
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94 time.Sleep(cleanupPause)
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95 err := auth.RunAs(pwResetRole, func(db *sql.DB) error {
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96 good := time.Now().Add(-passwordResetValid)
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97 _, err := db.Exec(cleanupRequestsSQL, good)
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98 return err
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99 })
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100 if err != nil {
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101 log.Printf("error: %v\n", err)
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102 }
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103 }
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104 }
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105
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106 func requestMessageBody(https, user, hash, server string) string {
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107 var content = struct {
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108 User string
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109 HTTPS string
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110 Server string
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111 Hash string
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112 }{
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113 User: user,
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114 HTTPS: https,
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115 Server: server,
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116 Hash: hash,
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117 }
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118 var buf bytes.Buffer
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119 if err := passwordResetRequestMailTmpl.Execute(&buf, &content); err != nil {
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120 log.Printf("error: %v\n", err)
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121 }
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122 return buf.String()
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123 }
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124
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125 func changedMessageBody(https, user, password, server string) string {
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126 var content = struct {
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127 User string
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128 HTTPS string
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129 Server string
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130 Password string
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131 }{
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132 User: user,
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133 HTTPS: https,
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134 Server: server,
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135 Password: password,
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136 }
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137 var buf bytes.Buffer
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138 if err := passwordResetMailTmpl.Execute(&buf, &content); err != nil {
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139 log.Printf("error: %v\n", err)
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140 }
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141 return buf.String()
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142 }
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diff changeset
143
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144 func useHTTPS(req *http.Request) string {
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145 if strings.ToLower(req.URL.Scheme) == "https" {
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diff changeset
146 return "https"
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147 }
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148 return "http"
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149 }
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150
302
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151 func generateHash() string {
408
ac23905e64b1 Improve WFS proxy a lot. It now generates signed re-writings.
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152 return hex.EncodeToString(common.GenerateRandomKey(hashLength))
310
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153 }
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154
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155 func generateNewPassword() string {
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156 // First try pwgen
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157 out, err := exec.Command("pwgen", "-y", "20", "1").Output()
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diff changeset
158 if err == nil {
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159 return strings.TrimSpace(string(out))
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160 }
317
5cb18bedb3a9 Simplified internal password generator.
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161 // Use internal generator.
408
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162 return common.RandomString(20)
310
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163 }
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164
304
69e291f26bbd Password reset: Part II.
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165 func passwordResetRequest(
302
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166 input interface{},
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167 req *http.Request,
486
b2dc9c2f69e0 First stab to use the metamorphic db to do all database stuff.
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168 _ *sql.Conn,
302
0777aa6de45b Password reset. Part I
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169 ) (jr JSONResult, err error) {
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170
442
fc37e7072022 Moved some models used in controllers to to model package because they may be needed elsewhere (e.g. GeoServer config).
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171 user := input.(*models.PWResetUser)
302
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172
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173 if user.User == "" {
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174 err = JSONError{http.StatusBadRequest, "Invalid user name"}
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175 return
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176 }
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177
321
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178 var hash, email string
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179
438
ffdb507d5b42 Removed db service user. Use an impersonated metamorph user instead.
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diff changeset
180 if err = auth.RunAs(pwResetRole, func(db *sql.DB) error {
321
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181
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diff changeset
182 var count int64
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183 if err := db.QueryRow(countRequestsSQL).Scan(&count); err != nil {
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184 return err
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diff changeset
185 }
302
0777aa6de45b Password reset. Part I
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186
321
974a5e4c0055 Persist password reset requests in database.
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diff changeset
187 // Limit total number of password requests.
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diff changeset
188 if count >= maxPasswordResets {
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diff changeset
189 return JSONError{
974a5e4c0055 Persist password reset requests in database.
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diff changeset
190 Code: http.StatusServiceUnavailable,
974a5e4c0055 Persist password reset requests in database.
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diff changeset
191 Message: "Too much password reset request",
974a5e4c0055 Persist password reset requests in database.
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diff changeset
192 }
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diff changeset
193 }
302
0777aa6de45b Password reset. Part I
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194
321
974a5e4c0055 Persist password reset requests in database.
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diff changeset
195 err := db.QueryRow(userExistsSQL, user.User).Scan(&email)
302
0777aa6de45b Password reset. Part I
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196
321
974a5e4c0055 Persist password reset requests in database.
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diff changeset
197 switch {
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diff changeset
198 case err == sql.ErrNoRows:
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diff changeset
199 return JSONError{http.StatusNotFound, "User does not exist."}
974a5e4c0055 Persist password reset requests in database.
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parents: 319
diff changeset
200 case err != nil:
974a5e4c0055 Persist password reset requests in database.
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diff changeset
201 return err
304
69e291f26bbd Password reset: Part II.
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diff changeset
202 }
69e291f26bbd Password reset: Part II.
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parents: 302
diff changeset
203
321
974a5e4c0055 Persist password reset requests in database.
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diff changeset
204 if err := db.QueryRow(countRequestsUserSQL, user.User).Scan(&count); err != nil {
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
205 return err
974a5e4c0055 Persist password reset requests in database.
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diff changeset
206 }
302
0777aa6de45b Password reset. Part I
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207
321
974a5e4c0055 Persist password reset requests in database.
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diff changeset
208 // Limit requests per user
974a5e4c0055 Persist password reset requests in database.
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diff changeset
209 if count >= maxPasswordRequestsPerUser {
974a5e4c0055 Persist password reset requests in database.
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parents: 319
diff changeset
210 return JSONError{
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
211 Code: http.StatusServiceUnavailable,
974a5e4c0055 Persist password reset requests in database.
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parents: 319
diff changeset
212 Message: "Too much password reset requests for user",
974a5e4c0055 Persist password reset requests in database.
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parents: 319
diff changeset
213 }
974a5e4c0055 Persist password reset requests in database.
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diff changeset
214 }
302
0777aa6de45b Password reset. Part I
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215
321
974a5e4c0055 Persist password reset requests in database.
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diff changeset
216 hash = generateHash()
974a5e4c0055 Persist password reset requests in database.
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diff changeset
217 _, err = db.Exec(insertRequestSQL, hash, user.User)
974a5e4c0055 Persist password reset requests in database.
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parents: 319
diff changeset
218 return err
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
219 }); err == nil {
974a5e4c0055 Persist password reset requests in database.
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parents: 319
diff changeset
220 body := requestMessageBody(useHTTPS(req), user.User, hash, req.Host)
302
0777aa6de45b Password reset. Part I
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parents:
diff changeset
221
339
33b59c848771 Factored out some miscellaneous code into own package.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 332
diff changeset
222 if err = misc.SendMail(email, "Password Reset Link", body); err == nil {
321
974a5e4c0055 Persist password reset requests in database.
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parents: 319
diff changeset
223 jr.Result = &struct {
974a5e4c0055 Persist password reset requests in database.
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parents: 319
diff changeset
224 SendTo string `json:"send-to"`
974a5e4c0055 Persist password reset requests in database.
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parents: 319
diff changeset
225 }{email}
974a5e4c0055 Persist password reset requests in database.
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diff changeset
226 }
974a5e4c0055 Persist password reset requests in database.
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diff changeset
227 }
302
0777aa6de45b Password reset. Part I
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parents:
diff changeset
228 return
0777aa6de45b Password reset. Part I
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parents:
diff changeset
229 }
304
69e291f26bbd Password reset: Part II.
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parents: 302
diff changeset
230
69e291f26bbd Password reset: Part II.
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parents: 302
diff changeset
231 func passwordReset(
316
423d0f1d8ee0 JSON input is not used when doing a password reset.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 315
diff changeset
232 _ interface{},
304
69e291f26bbd Password reset: Part II.
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parents: 302
diff changeset
233 req *http.Request,
486
b2dc9c2f69e0 First stab to use the metamorphic db to do all database stuff.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 478
diff changeset
234 _ *sql.Conn,
304
69e291f26bbd Password reset: Part II.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 302
diff changeset
235 ) (jr JSONResult, err error) {
69e291f26bbd Password reset: Part II.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 302
diff changeset
236
69e291f26bbd Password reset: Part II.
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parents: 302
diff changeset
237 hash := mux.Vars(req)["hash"]
69e291f26bbd Password reset: Part II.
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parents: 302
diff changeset
238 if _, err = hex.DecodeString(hash); err != nil {
69e291f26bbd Password reset: Part II.
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parents: 302
diff changeset
239 err = JSONError{http.StatusBadRequest, "Invalid hash"}
69e291f26bbd Password reset: Part II.
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parents: 302
diff changeset
240 return
69e291f26bbd Password reset: Part II.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 302
diff changeset
241 }
69e291f26bbd Password reset: Part II.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 302
diff changeset
242
321
974a5e4c0055 Persist password reset requests in database.
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parents: 319
diff changeset
243 var email, user, password string
310
4bee4ba6dc58 Password reset: Part III
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parents: 304
diff changeset
244
438
ffdb507d5b42 Removed db service user. Use an impersonated metamorph user instead.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 414
diff changeset
245 if err = auth.RunAs(pwResetRole, func(db *sql.DB) error {
321
974a5e4c0055 Persist password reset requests in database.
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parents: 319
diff changeset
246 err := db.QueryRow(findRequestSQL, hash).Scan(&email, &user)
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
247 switch {
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
248 case err == sql.ErrNoRows:
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
249 return JSONError{http.StatusNotFound, "No such hash"}
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
250 case err != nil:
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
251 return err
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
252 }
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
253 password = generateNewPassword()
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
254 res, err := db.Exec(updatePasswordSQL, password, user)
974a5e4c0055 Persist password reset requests in database.
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parents: 319
diff changeset
255 if err != nil {
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
256 return err
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
257 }
974a5e4c0055 Persist password reset requests in database.
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parents: 319
diff changeset
258 if n, err2 := res.RowsAffected(); err2 == nil && n == 0 {
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
259 return JSONError{http.StatusNotFound, "User not found"}
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
260 }
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
261 _, err = db.Exec(deleteRequestSQL, hash)
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
262 return err
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
263 }); err == nil {
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
264 body := changedMessageBody(useHTTPS(req), user, password, req.Host)
339
33b59c848771 Factored out some miscellaneous code into own package.
Sascha L. Teichmann <teichmann@intevation.de>
parents: 332
diff changeset
265 if err = misc.SendMail(email, "Password Reset Done", body); err == nil {
321
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
266 jr.Result = &struct {
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
267 SendTo string `json:"send-to"`
974a5e4c0055 Persist password reset requests in database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 319
diff changeset
268 }{email}
974a5e4c0055 Persist password reset requests in database.
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parents: 319
diff changeset
269 }
310
4bee4ba6dc58 Password reset: Part III
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parents: 304
diff changeset
270 }
304
69e291f26bbd Password reset: Part II.
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parents: 302
diff changeset
271 return
69e291f26bbd Password reset: Part II.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 302
diff changeset
272 }