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annotate pkg/controllers/types.go @ 418:c70ddc6eb168

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Don't allow user names to contain any of the following characters \"':;
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Thu, 16 Aug 2018 13:14:46 +0200
parents c1047fd04a3a
children c49f4c1808b1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 package controllers
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2
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3 import (
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4 "database/sql/driver"
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5 "encoding/json"
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6 "errors"
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7 "regexp"
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8 "strings"
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9 )
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10
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11 type (
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12 Email string
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13 Country string
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14 Role string
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15 UserName string
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16
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17 BoundingBox struct {
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18 X1 float64 `json:"x1"`
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19 Y1 float64 `json:"y1"`
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20 X2 float64 `json:"x2"`
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21 Y2 float64 `json:"y2"`
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22 }
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23
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24 User struct {
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25 User UserName `json:"user"`
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26 Role Role `json:"role"`
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27 Password string `json:"password,omitempty"`
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28 Email Email `json:"email"`
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29 Country Country `json:"country"`
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30 Extent *BoundingBox `json:"extent"`
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31 }
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32
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33 PWResetUser struct {
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34 User string `json:"user"`
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35 }
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36 )
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37
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38 var (
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39 // https://stackoverflow.com/questions/201323/how-to-validate-an-email-address-using-a-regular-expression
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40 emailRe = regexp.MustCompile(
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41 `(?:[a-z0-9!#$%&'*+/=?^_` + "`" +
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42 `{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_` + "`" +
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43 `{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]` +
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44 `|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")` +
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45 `@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?` +
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46 `|\[(?:(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9]))\.){3}` +
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47 `(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9])|[a-z0-9-]*[a-z0-9]` +
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48 `:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]` +
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49 `|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])`)
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50
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51 errNoEmailAddress = errors.New("Not a valid email address")
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52 errNoString = errors.New("Not a string")
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53 )
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54
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55 func (e *Email) UnmarshalJSON(data []byte) error {
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56 var s string
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57 if err := json.Unmarshal(data, &s); err != nil {
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58 return err
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59 }
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60 if !emailRe.MatchString(s) {
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61 return errNoEmailAddress
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62 }
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63 *e = Email(s)
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64 return nil
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65 }
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66
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67 func (e Email) Value() (driver.Value, error) {
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68 return string(e), nil
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69 }
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70
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71 func (e *Email) Scan(src interface{}) (err error) {
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72 if s, ok := src.(string); ok {
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73 *e = Email(s)
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74 } else {
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75 err = errNoString
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76 }
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77 return
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78 }
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79
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80 var errNoValidUser = errors.New("Not a valid user")
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81
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82 func (u UserName) isValid() bool {
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83 return !strings.ContainsAny(string(u), `\"':;`)
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84 }
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85
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86 func (u *UserName) UnmarshalJSON(data []byte) error {
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87 var s string
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88 if err := json.Unmarshal(data, &s); err != nil {
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89 return err
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90 }
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91 if !emailRe.MatchString(s) {
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92 return errNoEmailAddress
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93 }
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94 user := UserName(s)
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95 if !user.isValid() {
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96 return errNoValidUser
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97 }
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98 *u = user
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99 return nil
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100 }
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101
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102 func (u *UserName) Scan(src interface{}) (err error) {
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103 if s, ok := src.(string); ok {
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104 *u = UserName(s)
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105 } else {
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106 err = errNoString
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107 }
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108 return
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109 }
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110
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111 var (
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112 validCountries = []string{
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113 "AT", "BG", "DE", "HU", "HR",
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114 "MD", "RO", "RS", "SK", "UA",
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115 }
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116 errNoValidCountry = errors.New("Not a valid country")
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117 )
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118
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119 func (c *Country) UnmarshalJSON(data []byte) error {
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120 var s string
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121 if err := json.Unmarshal(data, &s); err != nil {
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122 return err
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123 }
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124 s = strings.ToUpper(s)
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125 for _, v := range validCountries {
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126 if v == s {
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127 *c = Country(v)
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128 return nil
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129 }
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130 }
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131 return errNoValidCountry
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132 }
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133
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134 func (c Country) Value() (driver.Value, error) {
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135 return string(c), nil
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136 }
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137
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138 func (c *Country) Scan(src interface{}) (err error) {
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139 if s, ok := src.(string); ok {
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140 *c = Country(s)
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141 } else {
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142 err = errNoString
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143 }
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144 return
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145 }
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146
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147 var (
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148 validRoles = []string{
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149 "waterway_user",
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150 "waterway_admin",
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151 "sys_admin",
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152 }
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153 errNoValidRole = errors.New("Not a valid role")
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154 )
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155
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156 func (r Role) Value() (driver.Value, error) {
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157 return string(r), nil
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158 }
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159
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160 func (r *Role) Scan(src interface{}) (err error) {
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161 if s, ok := src.(string); ok {
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162 *r = Role(s)
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163 } else {
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164 err = errNoString
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165 }
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166 return
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167 }
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168
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169 func (r *Role) UnmarshalJSON(data []byte) error {
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170 var s string
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171 if err := json.Unmarshal(data, &s); err != nil {
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172 return err
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173 }
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174 s = strings.ToLower(s)
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175 for _, v := range validRoles {
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176 if v == s {
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177 *r = Role(v)
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178 return nil
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179 }
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180 }
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181 return errNoValidRole
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182 }