fix encoding where signature contains a zero

interface/src/forms/ManageUsersForm.js

@@ -1,4 +1,4 @@
-import React from 'react';
+import React, { Fragment } from 'react';
 import PropTypes from 'prop-types';
 
 import { ValidatorForm } from 'react-material-ui-form-validator';
@@ -13,6 +13,8 @@ import TableCell from '@material-ui/core/TableCell';
 import TableFooter from '@material-ui/core/TableFooter';
 import TableHead from '@material-ui/core/TableHead';
 import TableRow from '@material-ui/core/TableRow';
+import Box from '@material-ui/core/Box';
+
 
 import EditIcon from '@material-ui/icons/Edit';
 import DeleteIcon from '@material-ui/icons/Delete';
@@ -80,6 +82,12 @@ class ManageUsersForm extends React.Component {
     return !this.props.userData.users.find(u => u.admin);
   }
 
+  removeUser = user => {
+    const { userData } = this.props;
+    const users = userData.users.filter(u => u.username !== user.username);
+    this.props.setData({ ...userData, users });
+  }
+
   startEditingUser = user => {
     this.setState({
       creating: false,
@@ -96,8 +104,7 @@ class ManageUsersForm extends React.Component {
   doneEditingUser = () => {
     const { user } = this.state;
     const { userData } = this.props;
-    let { users } = userData;
+    const users = userData.users.filter(u => u.username !== user.username);
-    users = users.filter(u => u.username !== user.username);
     users.push(user);
     this.props.setData({ ...userData, users });
     this.setState({
@@ -125,7 +132,7 @@ class ManageUsersForm extends React.Component {
 
   onSubmit = () => {
     this.props.onSubmit();
-    this.props.authenticationContex.refresh();
+    this.props.authenticationContext.refresh();
   }
 
   render() {
@@ -143,17 +150,7 @@ class ManageUsersForm extends React.Component {
             </div>
             :
             userData ?
-              user ?
+              <Fragment>
-                <UserForm
-                  user={user}
-                  creating={creating}
-                  onDoneEditing={this.doneEditingUser}
-                  onCancelEditing={this.cancelEditingUser}
-                  handleValueChange={this.handleUserValueChange}
-                  handleCheckboxChange={this.handleUserCheckboxChange}
-                  uniqueUsername={this.uniqueUsername}
-                />
-                :
                 <ValidatorForm onSubmit={this.onSubmit}>
                   <Table className={classes.table}>
                     <TableHead>
@@ -175,7 +172,7 @@ class ManageUsersForm extends React.Component {
                             }
                           </TableCell>
                           <TableCell align="center">
-                            <IconButton aria-label="Delete">
+                            <IconButton aria-label="Delete" onClick={() => this.removeUser(user)}>
                               <DeleteIcon />
                             </IconButton>
                             <IconButton aria-label="Edit" onClick={() => this.startEditingUser(user)}>
@@ -187,14 +184,7 @@ class ManageUsersForm extends React.Component {
                     </TableBody>
                     <TableFooter>
                       <TableRow>
-                        <TableCell colSpan={2}>
+                        <TableCell colSpan={2} />
-                          {
-                            this.noAdminConfigured() &&
-                            <Typography variant="body1" color="error">
-                              You must have at least one admin user configured.
-                            </Typography>
-                          }
-                        </TableCell>
                         <TableCell align="center">
                           <Button variant="contained" color="secondary" className={classes.button} onClick={this.createUser}>
                             Add User
@@ -203,6 +193,14 @@ class ManageUsersForm extends React.Component {
                       </TableRow>
                     </TableFooter>
                   </Table>
+                  {
+                    this.noAdminConfigured() &&
+                    <Typography component="div" variant="body1">
+                      <Box bgcolor="error.main" color="error.contrastText" p={2} m={1}>
+                        You must have at least one admin user configured.
+                      </Box>
+                    </Typography>
+                  }
                   <Button variant="contained" color="primary" className={classes.button} type="submit" disabled={this.noAdminConfigured()}>
                     Save
                   </Button>
@@ -210,6 +208,21 @@ class ManageUsersForm extends React.Component {
                     Reset
       		        </Button>
                 </ValidatorForm>
+                {
+                  user &&
+
+                  <UserForm
+                    user={user}
+                    creating={creating}
+                    onDoneEditing={this.doneEditingUser}
+                    onCancelEditing={this.cancelEditingUser}
+                    handleValueChange={this.handleUserValueChange}
+                    handleCheckboxChange={this.handleUserCheckboxChange}
+                    uniqueUsername={this.uniqueUsername}
+                  />
+
+                }
+              </Fragment>
               :
               <SectionContent title="Manage Users">
                 <Typography variant="h4" className={classes.loadingSettingsDetails}>

interface/src/forms/UserForm.js

@@ -1,46 +1,51 @@
 import React from 'react';
 import PropTypes from 'prop-types';
+import { TextValidator, ValidatorForm } from 'react-material-ui-form-validator';
 
 import { withStyles } from '@material-ui/core/styles';
 import Button from '@material-ui/core/Button';
 
-import { TextValidator, ValidatorForm } from 'react-material-ui-form-validator';
-import PasswordValidator from '../components/PasswordValidator';
-
 import FormControlLabel from '@material-ui/core/FormControlLabel';
 import Switch from '@material-ui/core/Switch';
 import FormGroup from '@material-ui/core/FormGroup';
+import DialogTitle from '@material-ui/core/DialogTitle';
+import Dialog from '@material-ui/core/Dialog';
+import DialogContent from '@material-ui/core/DialogContent';
+import DialogActions from '@material-ui/core/DialogActions';
+
+import PasswordValidator from '../components/PasswordValidator';
 
 const styles = theme => ({
   textField: {
     width: "100%"
   },
-  checkboxControl: {
-    width: "100%"
-  },
-  chips: {
-    display: 'flex',
-    flexWrap: 'wrap',
-  },
-  chip: {
-    marginRight: theme.spacing.unit,
-  },
   button: {
-    marginRight: theme.spacing.unit * 2,
+    margin: theme.spacing.unit
-    marginTop: theme.spacing.unit * 2,
   }
 });
 
 class UserForm extends React.Component {
 
+  constructor(props) {
+    super(props);
+    this.formRef = React.createRef();
+  }
+
   componentWillMount() {
     ValidatorForm.addValidationRule('uniqueUsername', this.props.uniqueUsername);
   }
 
+  submit = () => {
+    this.formRef.current.submit();
+  }
+
   render() {
     const { classes, user, creating, handleValueChange, handleCheckboxChange, onDoneEditing, onCancelEditing } = this.props;
     return (
-      <ValidatorForm onSubmit={onDoneEditing}>
+      <ValidatorForm onSubmit={onDoneEditing} ref={this.formRef}>
+        <Dialog onClose={onCancelEditing} aria-labelledby="modify-user-dialog-title" open={true} scroll="paper">
+          <DialogTitle id="modify-user-dialog-title">Modify User</DialogTitle>
+          <DialogContent>
             <TextValidator
               validators={creating ? ['required', 'uniqueUsername', 'matchRegexp:^[a-zA-Z0-9_\\.]{1,24}$'] : []}
               errorMessages={creating ? ['Username is required', "That username already exists", "Must be 1-24 characters: alpha numberic, '_' or '.'"] : []}
@@ -59,7 +64,7 @@ class UserForm extends React.Component {
               label="Password"
               className={classes.textField}
               value={user.password}
-          onChange={handleCheckboxChange('password')}
+              onChange={handleValueChange('password')}
               margin="normal"
             />
             <FormGroup>
@@ -68,12 +73,16 @@ class UserForm extends React.Component {
                 label="Admin?"
               />
             </FormGroup>
-        <Button variant="contained" color="primary" className={classes.button} type="submit">
+          </DialogContent>
-          Save
+          <DialogActions >
+            <Button variant="contained" color="primary" className={classes.button} type="submit" onClick={this.submit}>
+              Done
             </Button>
-        <Button variant="contained" color="secondary" className={classes.button} onClick={onCancelEditing}>
+            <Button variant="contained" color="secondary" className={classes.button} type="submit" onClick={onCancelEditing}>
-          Back
+              Cancel
             </Button>            
+          </DialogActions>
+        </Dialog>
       </ValidatorForm>
     );
   }

src/ArduinoJsonJWT.cpp

@@ -14,7 +14,7 @@ void ArduinoJsonJWT::setSecret(String secret){
  * No need to pull in additional crypto libraries - lets use what we already have.
  */
 String ArduinoJsonJWT::sign(String &payload) {
-  unsigned char hmacResult[33];
+  unsigned char hmacResult[32];
   {
   #if defined(ESP_PLATFORM)
     mbedtls_md_context_t ctx;
@@ -34,15 +34,14 @@ String ArduinoJsonJWT::sign(String &payload) {
     br_hmac_out(&hmacCtx, hmacResult);
   #endif
   }
-  hmacResult[32] = 0;
+  return encode((char *) hmacResult, 32);
-  return encode(String((char *) hmacResult));
 }
 
 String ArduinoJsonJWT::buildJWT(JsonObject &payload) {
   // serialize, then encode payload
   String jwt;
   serializeJson(payload, jwt);
-  jwt = encode(jwt);
+  jwt = encode(jwt.c_str(), jwt.length());
 
   // add the header to payload
   jwt = JWT_HEADER + '.' + jwt;
@@ -89,27 +88,27 @@ void ArduinoJsonJWT::parseJWT(String jwt, JsonDocument &jsonDocument) {
   }
 }
 
-String ArduinoJsonJWT::encode(String value) {
+String ArduinoJsonJWT::encode(const char *cstr, int inputLen) {
   // prepare encoder
   base64_encodestate _state;
 #if defined(ESP8266)
   base64_init_encodestate_nonewlines(&_state);
-  size_t encodedLength = base64_encode_expected_len_nonewlines(value.length()) + 1;    
+  size_t encodedLength = base64_encode_expected_len_nonewlines(inputLen) + 1;    
 #elif defined(ESP_PLATFORM)
   base64_init_encodestate(&_state);
-  size_t encodedLength = base64_encode_expected_len(value.length()) + 1;    
+  size_t encodedLength = base64_encode_expected_len(inputLen) + 1;    
 #endif
 
   // prepare buffer of correct length
   char buffer[encodedLength];
 
   // encode to buffer
-  int len = base64_encode_block(value.c_str(), value.length(), &buffer[0], &_state);
+  int len = base64_encode_block(cstr, inputLen, &buffer[0], &_state);
   len += base64_encode_blockend(&buffer[len], &_state);
   buffer[len] = 0;
 
   // convert to arduino string
-  value = String(buffer);
+  String value = String(buffer);
 
   // remove padding and convert to URL safe form
   while (value.charAt(value.length() - 1) == '='){

src/ArduinoJsonJWT.h

@@ -24,7 +24,7 @@ private:
   
   String sign(String &value);
 
-  static String encode(String value);
+  static String encode(const char *cstr, int len);
   static String decode(String value);
 
 public:

src/SecurityManager.cpp

@@ -43,10 +43,11 @@ Authentication SecurityManager::authenticateRequest(AsyncWebServerRequest *reque
   AsyncWebHeader* authorizationHeader = request->getHeader(AUTHORIZATION_HEADER);
   if (authorizationHeader) {
     String value = authorizationHeader->value();
-    value.startsWith(AUTHORIZATION_HEADER_PREFIX);
+    if (value.startsWith(AUTHORIZATION_HEADER_PREFIX)){
       value = value.substring(AUTHORIZATION_HEADER_PREFIX_LEN);
       return authenticateJWT(value);
     }   
+  }  
   return Authentication();
 }