1 | var formManager = function(){ |
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2 | /** |
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3 | Code based on: |
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4 | @url https://dxr.mozilla.org/firefox/source/toolkit/components/passwordmgr/src/nsLoginManager.js#655 |
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5 | */ |
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6 | var settings = {}; |
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7 | |||
8 | return { |
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9 | _init_: function () { |
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10 | API.runtime.sendMessage(API.runtime.id, {method: 'getSetting', args: 'debug'}).then(function (result) { |
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11 | settings.debug = (result); |
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12 | }); |
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13 | }, |
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14 | /* |
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15 | * _isAutoCompleteDisabled |
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16 | * |
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17 | * Returns true if the page requests autocomplete be disabled for the |
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18 | * specified form input. |
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19 | */ |
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20 | isAutocompleteDisabled: function (element) { |
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21 | return !!(element && element.hasAttribute("autocomplete") && element.getAttribute("autocomplete").toLowerCase() === "off"); |
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22 | }, |
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23 | |||
24 | /* |
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25 | * _getPasswordFields |
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26 | * |
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27 | * Returns an array of password field elements for the specified form. |
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28 | * If no pw fields are found, or if more than 3 are found, then null |
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29 | * is returned. |
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30 | * |
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31 | * skipEmptyFields can be set to ignore password fields with no value. |
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32 | */ |
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33 | _getPasswordFields: function (form, skipEmptyFields) { |
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34 | // Locate the password fields in the form. |
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35 | var pwFields = []; |
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36 | for (var i = 0; i < form.elements.length; i++) { |
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37 | if (form.elements[i].type !== "password"){ |
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38 | continue; |
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39 | } |
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40 | |||
41 | |||
42 | if (skipEmptyFields && !form.elements[i].value){ |
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43 | continue; |
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44 | } |
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45 | |||
46 | pwFields[pwFields.length] = { |
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47 | index: i, |
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48 | element: form.elements[i] |
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49 | }; |
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50 | } |
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51 | |||
52 | // If too few or too many fields, bail out. |
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53 | if (pwFields.length === 0) { |
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54 | this.log('(form ignored ('+ form.action +') -- no password fields.)'); |
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55 | return null; |
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56 | } else if (pwFields.length > 3) { |
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57 | this.log('(form ignored -- too many password fields. [got ' + |
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58 | pwFields.length + "])"); |
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59 | return null; |
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60 | } |
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61 | |||
62 | return pwFields; |
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63 | }, |
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64 | /* |
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65 | * _getFormFields |
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66 | * |
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67 | * Returns the username and password fields found in the form. |
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68 | * Can handle complex forms by trying to figure out what the |
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69 | * relevant fields are. |
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70 | * |
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71 | * Returns: [usernameField, newPasswordField, oldPasswordField] |
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72 | * |
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73 | * usernameField may be null. |
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74 | * newPasswordField will always be non-null. |
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75 | * oldPasswordField may be null. If null, newPasswordField is just |
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76 | * "theLoginField". If not null, the form is apparently a |
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77 | * change-password field, with oldPasswordField containing the password |
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78 | * that is being changed. |
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79 | */ |
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80 | getFormFields: function (form, isSubmission) { |
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81 | var usernameField = null; |
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82 | |||
83 | // Locate the password field(s) in the form. Up to 3 supported. |
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84 | // If there's no password field, there's nothing for us to do. |
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85 | var pwFields = this._getPasswordFields(form, isSubmission); |
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86 | if (!pwFields){ |
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87 | return [null, null, null]; |
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88 | } |
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89 | |||
90 | |||
91 | // Locate the username field in the form by searching backwards |
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92 | // from the first passwordfield, assume the first text field is the |
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93 | // username. We might not find a username field if the user is |
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94 | // already logged in to the site. |
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95 | for (var i = pwFields[0].index - 1; i >= 0; i--) { |
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96 | if (form.elements[i].type.toLowerCase() === "text" || form.elements[i].type.toLowerCase() === "email") { |
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97 | usernameField = form.elements[i]; |
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98 | break; |
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99 | } |
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100 | } |
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101 | |||
102 | if (!usernameField){ |
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103 | this.log('(form ('+ form.action +') ignored -- no username field found)'); |
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104 | } |
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105 | |||
106 | |||
107 | |||
108 | // If we're not submitting a form (it's a page load), there are no |
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109 | // password field values for us to use for identifying fields. So, |
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110 | // just assume the first password field is the one to be filled in. |
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111 | if (!isSubmission || pwFields.length === 1){ |
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112 | return [usernameField, pwFields[0].element, null]; |
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113 | } |
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114 | |||
115 | |||
116 | |||
117 | // Try to figure out WTF is in the form based on the password values. |
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118 | var oldPasswordField, newPasswordField; |
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119 | var pw1 = pwFields[0].element.value; |
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120 | var pw2 = pwFields[1].element.value; |
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121 | var pw3 = (pwFields[2] ? pwFields[2].element.value : null); |
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122 | |||
123 | if (pwFields.length === 3) { |
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124 | // Look for two identical passwords, that's the new password |
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125 | |||
126 | if (pw1 === pw2 && pw2 === pw3) { |
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127 | // All 3 passwords the same? Weird! Treat as if 1 pw field. |
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128 | newPasswordField = pwFields[0].element; |
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129 | oldPasswordField = null; |
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130 | } else if (pw1 === pw2) { |
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131 | newPasswordField = pwFields[0].element; |
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132 | oldPasswordField = pwFields[2].element; |
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133 | } else if (pw2 === pw3) { |
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134 | oldPasswordField = pwFields[0].element; |
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135 | newPasswordField = pwFields[2].element; |
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136 | } else if (pw1 === pw3) { |
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137 | // A bit odd, but could make sense with the right page layout. |
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138 | newPasswordField = pwFields[0].element; |
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139 | oldPasswordField = pwFields[1].element; |
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140 | } else { |
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141 | // We can't tell which of the 3 passwords should be saved. |
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142 | this.log("(form ignored -- all 3 pw fields differ)"); |
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143 | return [null, null, null]; |
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144 | } |
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145 | } else { // pwFields.length == 2 |
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146 | if (pw1 === pw2) { |
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147 | // Treat as if 1 pw field |
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148 | newPasswordField = pwFields[0].element; |
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149 | oldPasswordField = null; |
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150 | } else { |
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151 | // Just assume that the 2nd password is the new password |
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152 | oldPasswordField = pwFields[0].element; |
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153 | newPasswordField = pwFields[1].element; |
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154 | } |
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155 | } |
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156 | |||
157 | return [usernameField, newPasswordField, oldPasswordField]; |
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158 | }, |
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159 | log: function (str) { |
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160 | if(settings.debug){ |
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161 | console.log(str); |
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162 | } |
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163 | } |
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164 | }; |
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165 | }(); |
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166 | |||
167 | function getLoginFields(isSubmission) { |
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168 | var forms = document.forms; |
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169 | var loginForms = []; |
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170 | |||
171 | for (var i = 0; i < forms.length; i++) { |
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172 | var form = forms[i]; |
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173 | var result = formManager.getFormFields(form, isSubmission); |
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174 | var usernameField = result[0]; |
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175 | var passwordField = result[1]; |
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176 | // Need a valid password field to do anything. |
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177 | if (passwordField === null){ |
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178 | continue; |
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179 | } |
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180 | loginForms.push([usernameField, passwordField]); |
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181 | } |
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182 | return loginForms; |
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183 | } |
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184 | |||
185 | function getFormFromElement(elem) { |
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186 | if(elem) { |
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187 | while (elem.parentNode) { |
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188 | if (elem.parentNode.nodeName.toLowerCase() === "form") { |
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189 | return elem.parentNode; |
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190 | } |
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191 | elem = elem.parentNode; |
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192 | } |
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193 | } |
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194 | } |
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195 | |||
196 | function dispatchEvents(element){ |
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197 | var eventNames = [ 'click', 'focus', 'keypress', 'keydown', 'keyup', 'input', 'blur', 'change' ]; |
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198 | eventNames.forEach(function(eventName) { |
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199 | element.dispatchEvent(new Event(eventName, {"bubbles":true})); |
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200 | }); |
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201 | } |
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202 | |||
203 | function fillPassword(user, password) { |
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204 | var loginFields = getLoginFields(); |
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205 | for (var i = 0; i < loginFields.length; i++) { |
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206 | if(user && loginFields[i][0]){ |
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207 | loginFields[i][0].value = user; |
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208 | if(loginFields[i][0].offsetParent) { |
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209 | dispatchEvents(loginFields[i][0]); |
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210 | } |
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211 | } |
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212 | if(password && loginFields[i][1]) { |
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213 | loginFields[i][1].value = password; |
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214 | if(loginFields[i][1].offsetParent) { |
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215 | dispatchEvents(loginFields[i][1]); |
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216 | } |
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217 | } |
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218 | } |
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219 | |||
220 | } |
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221 | formManager._init_(); |
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