getSessionPasswordFromUrl

Overview

The getSessionPasswordFromUrl utility function extracts the session password from a URL’s hash parameters. Hash parameters are used for passwords because they are not sent to servers in HTTP requests, providing better security for sensitive session credentials while still enabling automatic session joining from shared links.

Perfect for: Secure session joining, URL parsing, password extraction, deep linking with authentication, and maintaining security in collaborative workflows.

Import

import { utils } from 'react-together'
const { getSessionPasswordFromUrl } = utils

Signature

getSessionPasswordFromUrl(
  url: URL,
  options?: {
    passwordKey?: string
  }
): string | null

Parameters

url

URL

required

The URL object to extract the session password from

options.passwordKey

string

default:"rtPwd"

The hash parameter key to look for when extracting the session password

Returns

password

string | null

The session password value, or null if it does not exist in the URL hash

Examples

Basic Usage

Extract session password using default parameter key:

import { utils } from 'react-together'

const { getSessionPasswordFromUrl } = utils

function parsePasswordFromUrl() {
  // URL with default password parameter in hash
  const url = new URL('https://myapp.com/collaborate?rtName=session#rtPwd=secure123')
  
  const password = getSessionPasswordFromUrl(url)
  
  console.log(password)
  // Output: "secure123"
  
  return password
}

// Example with no password parameter
function parseUrlWithoutPassword() {
  const url = new URL('https://myapp.com/collaborate?rtName=session')
  const password = getSessionPasswordFromUrl(url)
  
  console.log(password)
  // Output: null
  
  return password
}

Custom Parameter Key

Extract password using custom parameter keys:

import { utils } from 'react-together'

const { getSessionPasswordFromUrl } = utils

function parseCustomPasswordParameter() {
  // URL with custom password parameter
  const url = new URL('https://myapp.com/rooms?roomId=meeting#access=secretToken123')
  
  const password = getSessionPasswordFromUrl(url, { passwordKey: 'access' })
  
  console.log(password)
  // Output: "secretToken123"
  
  return password
}

Secure Session Authentication

Implement secure session joining with password validation:

import { utils } from 'react-together'
import { useState, useEffect } from 'react'

const { getSessionNameFromUrl, getSessionPasswordFromUrl } = utils

interface SessionCredentials {
  name: string
  password: string
  isValid: boolean
}

function SecureSessionAuthenticator() {
  const [credentials, setCredentials] = useState<SessionCredentials | null>(null)
  const [authStatus, setAuthStatus] = useState<'checking' | 'valid' | 'invalid' | 'missing'>('checking')
  
  useEffect(() => {
    const authenticateFromUrl = async () => {
      const currentUrl = new URL(window.location.href)
      const sessionName = getSessionNameFromUrl(currentUrl)
      const sessionPassword = getSessionPasswordFromUrl(currentUrl)
      
      if (!sessionName || !sessionPassword) {
        setAuthStatus('missing')
        return
      }
      
      // Validate password strength
      if (sessionPassword.length < 6) {
        setAuthStatus('invalid')
        return
      }
      
      // Here you would typically validate against your backend
      const isValidCredentials = await validateSessionCredentials(sessionName, sessionPassword)
      
      if (isValidCredentials) {
        setCredentials({
          name: sessionName,
          password: sessionPassword,
          isValid: true
        })
        setAuthStatus('valid')
      } else {
        setAuthStatus('invalid')
      }
    }
    
    authenticateFromUrl()
  }, [])
  
  const validateSessionCredentials = async (name: string, password: string): Promise<boolean> => {
    // Simulate API call for credential validation
    return new Promise(resolve => {
      setTimeout(() => {
        // Simple validation logic (replace with real validation)
        resolve(password.length >= 6 && name.length > 0)
      }, 1000)
    })
  }
  
  if (authStatus === 'checking') {
    return (
      <div className="auth-checking">
        <div className="spinner"></div>
        <p>Validating session credentials...</p>
      </div>
    )
  }
  
  if (authStatus === 'missing') {
    return (
      <div className="auth-missing">
        <h3>🔑 Session Credentials Required</h3>
        <p>This URL does not contain valid session credentials.</p>
        <button>Create New Session</button>
      </div>
    )
  }
  
  if (authStatus === 'invalid') {
    return (
      <div className="auth-invalid">
        <h3>❌ Invalid Credentials</h3>
        <p>The session credentials in this URL are invalid or expired.</p>
        <button>Try Different Session</button>
      </div>
    )
  }
  
  return (
    <div className="auth-valid">
      <h3>✅ Session Authenticated</h3>
      <p>Successfully authenticated for session: <strong>{credentials?.name}</strong></p>
      <button>Join Session</button>
    </div>
  )
}

Password Security Validator

Validate password security before using:

import { utils } from 'react-together'

const { getSessionPasswordFromUrl } = utils

interface PasswordValidation {
  isValid: boolean
  strength: 'weak' | 'medium' | 'strong'
  issues: string[]
  suggestions: string[]
}

function validatePasswordSecurity(password: string): PasswordValidation {
  const issues: string[] = []
  const suggestions: string[] = []
  
  // Length check
  if (password.length < 6) {
    issues.push('Password too short')
    suggestions.push('Use at least 6 characters')
  }
  
  if (password.length < 8) {
    suggestions.push('Consider using 8+ characters for better security')
  }
  
  // Character variety checks
  if (!/[a-z]/.test(password)) {
    issues.push('No lowercase letters')
    suggestions.push('Include lowercase letters')
  }
  
  if (!/[A-Z]/.test(password)) {
    issues.push('No uppercase letters')
    suggestions.push('Include uppercase letters')
  }
  
  if (!/[0-9]/.test(password)) {
    issues.push('No numbers')
    suggestions.push('Include numbers')
  }
  
  if (!/[^a-zA-Z0-9]/.test(password)) {
    suggestions.push('Consider adding special characters')
  }
  
  // Common password check
  const commonPasswords = ['password', '123456', 'qwerty', 'abc123']
  if (commonPasswords.includes(password.toLowerCase())) {
    issues.push('Common password detected')
    suggestions.push('Use a unique password')
  }
  
  // Determine strength
  let strength: 'weak' | 'medium' | 'strong' = 'weak'
  if (issues.length === 0) {
    if (password.length >= 12 && /[^a-zA-Z0-9]/.test(password)) {
      strength = 'strong'
    } else if (password.length >= 8) {
      strength = 'medium'
    }
  }
  
  return {
    isValid: issues.length === 0,
    strength,
    issues,
    suggestions
  }
}

function PasswordSecurityChecker() {
  const [urlInput, setUrlInput] = useState('')
  const [passwordValidation, setPasswordValidation] = useState<PasswordValidation | null>(null)
  const [extractedPassword, setExtractedPassword] = useState<string | null>(null)
  
  const checkPasswordSecurity = () => {
    try {
      const url = new URL(urlInput)
      const password = getSessionPasswordFromUrl(url)
      
      if (password) {
        setExtractedPassword(password)
        const validation = validatePasswordSecurity(password)
        setPasswordValidation(validation)
      } else {
        setExtractedPassword(null)
        setPasswordValidation(null)
      }
    } catch (error) {
      console.error('Invalid URL:', error)
      setExtractedPassword(null)
      setPasswordValidation(null)
    }
  }
  
  return (
    <div className="password-security-checker">
      <h3>🔐 Password Security Checker</h3>
      <p>Check the security of passwords in session URLs</p>
      
      <div className="checker-input">
        <textarea
          value={urlInput}
          onChange={(e) => setUrlInput(e.target.value)}
          placeholder="Paste session URL here..."
          rows={3}
        />
        <button onClick={checkPasswordSecurity}>
          Check Password Security
        </button>
      </div>
      
      {extractedPassword && (
        <div className="password-info">
          <h4>Extracted Password</h4>
          <div className="password-display">
            <code>{'*'.repeat(extractedPassword.length)}</code>
            <small>Length: {extractedPassword.length} characters</small>
          </div>
        </div>
      )}
      
      {passwordValidation && (
        <div className="validation-results">
          <div className={`strength-indicator ${passwordValidation.strength}`}>
            <h4>Security Strength: {passwordValidation.strength.toUpperCase()}</h4>
            <div className={`strength-bar ${passwordValidation.strength}`}>
              <div className="strength-fill"></div>
            </div>
          </div>
          
          {passwordValidation.issues.length > 0 && (
            <div className="security-issues">
              <h5>🚨 Security Issues</h5>
              <ul>
                {passwordValidation.issues.map((issue, index) => (
                  <li key={index} className="issue">{issue}</li>
                ))}
              </ul>
            </div>
          )}
          
          {passwordValidation.suggestions.length > 0 && (
            <div className="security-suggestions">
              <h5>💡 Suggestions</h5>
              <ul>
                {passwordValidation.suggestions.map((suggestion, index) => (
                  <li key={index} className="suggestion">{suggestion}</li>
                ))}
              </ul>
            </div>
          )}
          
          <div className={`validity-status ${passwordValidation.isValid ? 'valid' : 'invalid'}`}>
            {passwordValidation.isValid ? 
              '✅ Password meets minimum security requirements' : 
              '❌ Password does not meet security requirements'
            }
          </div>
        </div>
      )}
    </div>
  )
}

Secure URL Builder

Build URLs with strong password validation:

import { utils } from 'react-together'
import { useState } from 'react'

const { getJoinUrl, getSessionPasswordFromUrl } = utils

function SecureUrlBuilder() {
  const [sessionName, setSessionName] = useState('')
  const [password, setPassword] = useState('')
  const [generatedUrl, setGeneratedUrl] = useState<string | null>(null)
  const [passwordStrength, setPasswordStrength] = useState<'weak' | 'medium' | 'strong'>('weak')
  
  const generateSecurePassword = () => {
    const charset = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*'
    let result = ''
    for (let i = 0; i < 12; i++) {
      result += charset.charAt(Math.floor(Math.random() * charset.length))
    }
    setPassword(result)
    setPasswordStrength('strong')
  }
  
  const evaluatePasswordStrength = (pwd: string) => {
    if (pwd.length < 6) return 'weak'
    if (pwd.length < 8 || !/[A-Z]/.test(pwd) || !/[0-9]/.test(pwd)) return 'weak'
    if (pwd.length < 10 || !/[^a-zA-Z0-9]/.test(pwd)) return 'medium'
    return 'strong'
  }
  
  const handlePasswordChange = (newPassword: string) => {
    setPassword(newPassword)
    setPasswordStrength(evaluatePasswordStrength(newPassword))
  }
  
  const buildSecureUrl = () => {
    if (!sessionName || !password) return
    
    if (passwordStrength === 'weak') {
      alert('Please use a stronger password for better security')
      return
    }
    
    const baseUrl = new URL(window.location.origin + window.location.pathname)
    const joinUrl = getJoinUrl(baseUrl, sessionName, password)
    setGeneratedUrl(joinUrl.toString())
  }
  
  const testPasswordExtraction = () => {
    if (!generatedUrl) return
    
    const url = new URL(generatedUrl)
    const extractedPassword = getSessionPasswordFromUrl(url)
    
    if (extractedPassword === password) {
      alert('✅ Password extraction successful!')
    } else {
      alert('❌ Password extraction failed')
    }
  }
  
  return (
    <div className="secure-url-builder">
      <h3>🔒 Secure Session URL Builder</h3>
      
      <div className="builder-form">
        <div className="form-group">
          <label>Session Name:</label>
          <input
            type="text"
            value={sessionName}
            onChange={(e) => setSessionName(e.target.value)}
            placeholder="team-meeting-2024"
          />
        </div>
        
        <div className="form-group">
          <label>Password:</label>
          <div className="password-input">
            <input
              type="password"
              value={password}
              onChange={(e) => handlePasswordChange(e.target.value)}
              placeholder="Enter secure password"
            />
            <button onClick={generateSecurePassword} className="generate-btn">
              Generate Strong Password
            </button>
          </div>
          <div className={`strength-indicator ${passwordStrength}`}>
            Strength: {passwordStrength.toUpperCase()}
          </div>
        </div>
        
        <button 
          onClick={buildSecureUrl}
          disabled={!sessionName || !password || passwordStrength === 'weak'}
          className="build-btn"
        >
          Build Secure URL
        </button>
      </div>
      
      {generatedUrl && (
        <div className="url-result">
          <h4>Generated Secure URL</h4>
          <div className="url-display">
            <textarea
              value={generatedUrl}
              readOnly
              rows={3}
              onClick={(e) => e.currentTarget.select()}
            />
          </div>
          
          <div className="url-actions">
            <button onClick={() => navigator.clipboard.writeText(generatedUrl)}>
              📋 Copy URL
            </button>
            <button onClick={testPasswordExtraction}>
              🧪 Test Password Extraction
            </button>
          </div>
          
          <div className="security-info">
            <h5>🔐 Security Features</h5>
            <ul>
              <li>✅ Password stored in URL hash (not sent to servers)</li>
              <li>✅ Strong password requirement enforced</li>
              <li>✅ Secure parameter extraction</li>
            </ul>
          </div>
        </div>
      )}
    </div>
  )
}

Session Password Manager

Manage multiple session passwords securely:

import { utils } from 'react-together'
import { useState, useEffect } from 'react'

const { getSessionNameFromUrl, getSessionPasswordFromUrl } = utils

interface StoredSession {
  id: string
  sessionName: string
  hashedPassword: string // Store hashed, not plain text
  createdAt: Date
  lastUsed: Date
  usageCount: number
}

// Simple hash function (use a proper crypto library in production)
function simpleHash(text: string): string {
  let hash = 0
  for (let i = 0; i < text.length; i++) {
    const char = text.charCodeAt(i)
    hash = ((hash << 5) - hash) + char
    hash = hash & hash // Convert to 32-bit integer
  }
  return hash.toString(36)
}

function SessionPasswordManager() {
  const [storedSessions, setStoredSessions] = useState<StoredSession[]>([])
  const [currentSession, setCurrentSession] = useState<{name: string, password: string} | null>(null)
  
  useEffect(() => {
    // Load stored sessions
    const saved = localStorage.getItem('sessionPasswords')
    if (saved) {
      const parsed = JSON.parse(saved)
      const sessions = parsed.map((session: any) => ({
        ...session,
        createdAt: new Date(session.createdAt),
        lastUsed: new Date(session.lastUsed)
      }))
      setStoredSessions(sessions)
    }
    
    // Check current URL for session
    const currentUrl = new URL(window.location.href)
    const sessionName = getSessionNameFromUrl(currentUrl)
    const sessionPassword = getSessionPasswordFromUrl(currentUrl)
    
    if (sessionName && sessionPassword) {
      setCurrentSession({ name: sessionName, password: sessionPassword })
      updateSessionUsage(sessionName, sessionPassword)
    }
  }, [])
  
  const saveStoredSessions = (sessions: StoredSession[]) => {
    setStoredSessions(sessions)
    localStorage.setItem('sessionPasswords', JSON.stringify(sessions))
  }
  
  const updateSessionUsage = (sessionName: string, password: string) => {
    const hashedPassword = simpleHash(password)
    const existingIndex = storedSessions.findIndex(
      session => session.sessionName === sessionName && session.hashedPassword === hashedPassword
    )
    
    if (existingIndex >= 0) {
      // Update existing session
      const updated = [...storedSessions]
      updated[existingIndex] = {
        ...updated[existingIndex],
        lastUsed: new Date(),
        usageCount: updated[existingIndex].usageCount + 1
      }
      saveStoredSessions(updated)
    } else {
      // Add new session
      const newSession: StoredSession = {
        id: Math.random().toString(36).substr(2, 9),
        sessionName,
        hashedPassword,
        createdAt: new Date(),
        lastUsed: new Date(),
        usageCount: 1
      }
      saveStoredSessions([newSession, ...storedSessions])
    }
  }
  
  const removeStoredSession = (sessionId: string) => {
    saveStoredSessions(storedSessions.filter(session => session.id !== sessionId))
  }
  
  const clearAllSessions = () => {
    saveStoredSessions([])
  }
  
  return (
    <div className="session-password-manager">
      <div className="current-session">
        <h3>🔓 Current Session</h3>
        {currentSession ? (
          <div className="session-info">
            <p><strong>Session:</strong> {currentSession.name}</p>
            <p><strong>Password:</strong> {'*'.repeat(currentSession.password.length)}</p>
            <div className="session-actions">
              <button>Leave Session</button>
              <button>Share Session</button>
            </div>
          </div>
        ) : (
          <p>No active session detected</p>
        )}
      </div>
      
      <div className="stored-sessions">
        <div className="sessions-header">
          <h3>🗝️ Saved Sessions ({storedSessions.length})</h3>
          <button onClick={clearAllSessions} className="clear-btn">
            Clear All
          </button>
        </div>
        
        {storedSessions.length === 0 ? (
          <div className="empty-sessions">
            <p>No saved sessions</p>
            <small>Sessions you join will be remembered here</small>
          </div>
        ) : (
          <div className="sessions-list">
            {storedSessions.map(session => (
              <div key={session.id} className="session-item">
                <div className="session-details">
                  <h4>{session.sessionName}</h4>
                  <div className="session-meta">
                    <span>Used {session.usageCount} time{session.usageCount !== 1 ? 's' : ''}</span>
                    <span>Last: {session.lastUsed.toLocaleDateString()}</span>
                  </div>
                </div>
                <div className="session-actions">
                  <button className="rejoin-btn">
                    Rejoin
                  </button>
                  <button 
                    onClick={() => removeStoredSession(session.id)}
                    className="remove-btn"
                  >
                    Remove
                  </button>
                </div>
              </div>
            ))}
          </div>
        )}
      </div>
      
      <div className="security-notice">
        <h4>🔒 Security Information</h4>
        <ul>
          <li>Passwords are hashed before local storage</li>
          <li>Hash parameters are not sent to servers</li>
          <li>Session data is stored locally only</li>
          <li>Clear your data regularly for maximum security</li>
        </ul>
      </div>
    </div>
  )
}

URL Hash Structure

Passwords are stored in URL hash parameters for security:

https://example.com/path?rtName=session#rtPwd=password123
                                        ↑
                               Password in hash (secure)

Why hash parameters?

Hash parameters are not sent to servers in HTTP requests
They remain in the browser for client-side processing
Better security for sensitive credentials

Custom parameter example:

https://example.com/path?sessionId=meeting#token=secret123
                                          ↑
                                  Custom password key

Security Considerations

Hash vs Query Parameters

// ✅ Good - Password in hash (not sent to server)
const url = new URL('https://app.com?rtName=session#rtPwd=password')
const password = getSessionPasswordFromUrl(url)

// ❌ Bad - Password in query (sent to server)
const url = new URL('https://app.com?rtName=session&rtPwd=password')
// This would expose the password to server logs

Password Validation

// ✅ Good - Validate extracted passwords
const password = getSessionPasswordFromUrl(url)
if (password && password.length >= 6) {
  // Use the password
}

// ✅ Good - Check password strength
const isStrongPassword = password && 
  password.length >= 8 && 
  /[A-Z]/.test(password) && 
  /[0-9]/.test(password)

Secure Storage

// ✅ Good - Hash passwords before storing locally
const hashedPassword = await crypto.subtle.digest('SHA-256', 
  new TextEncoder().encode(password)
)

// ❌ Bad - Storing plain text passwords
localStorage.setItem('password', password)

Error Handling

The function safely handles various edge cases:

// Invalid URL - handled by URL constructor
const password = getSessionPasswordFromUrl(invalidUrl) // null

// Missing hash parameter
const url = new URL('https://app.com?rtName=session')
const password = getSessionPasswordFromUrl(url) // null

// Empty parameter value
const url = new URL('https://app.com#rtPwd=')
const password = getSessionPasswordFromUrl(url) // ""

// Custom parameter not found
const url = new URL('https://app.com#rtPwd=password')
const password = getSessionPasswordFromUrl(url, { passwordKey: 'missing' }) // null

Best Practices

Security First

// ✅ Good - Use strong passwords
const minPasswordLength = 8
const hasStrongPassword = password && password.length >= minPasswordLength

// ✅ Good - Validate before use
const password = getSessionPasswordFromUrl(url)
if (password && isValidPassword(password)) {
  joinSession(sessionName, password)
}

Error Handling

// ✅ Good - Handle missing passwords gracefully
const password = getSessionPasswordFromUrl(url)
if (!password) {
  showPasswordPrompt()
  return
}

URL Parsing

// ✅ Good - Always validate URLs first
try {
  const url = new URL(urlString)
  const password = getSessionPasswordFromUrl(url)
} catch (error) {
  console.error('Invalid URL format:', error)
}

Common Use Cases

Secure Session Joining: Extract passwords from shared secure URLs
Authentication: Validate session credentials from URLs
Deep Linking: Enable password-protected session access
Security Auditing: Check password strength in session URLs
Session Management: Parse and validate session credentials

getSessionNameFromUrl - Extract session names
getJoinUrl - Create URLs with session parameters
getCleanUrl - Remove session parameters

useJoinUrl - Get current session join URL
useCreateRandomSession - Create new secure sessions
useLeaveSession - Leave sessions with credential cleanup

TypeScript Support

The function is fully typed for better development experience:

import { utils } from 'react-together'

const { getSessionPasswordFromUrl } = utils

// TypeScript will enforce correct parameter types
const password: string | null = getSessionPasswordFromUrl(
  new URL('https://app.com#rtPwd=password'),
  { passwordKey: 'token' }
)

Getting Started

Core Hooks

Connection & Session Hooks

Communication Hooks

Utility Hooks

Components

Utilities

Overview

Import

Signature

Parameters

Returns

Examples

Basic Usage

Custom Parameter Key

Secure Session Authentication

Password Security Validator

Secure URL Builder

Session Password Manager

URL Hash Structure

Security Considerations

Hash vs Query Parameters

Password Validation

Secure Storage

Error Handling

Best Practices

Security First

Error Handling

URL Parsing

Common Use Cases

TypeScript Support

Getting Started

Core Hooks

Connection & Session Hooks

Communication Hooks

Utility Hooks

Components

Utilities

​Overview

​Import

​Signature

​Parameters

​Returns

​Examples

​Basic Usage

​Custom Parameter Key

​Secure Session Authentication

​Password Security Validator

​Secure URL Builder

​Session Password Manager

​URL Hash Structure

​Security Considerations

​Hash vs Query Parameters

​Password Validation

​Secure Storage

​Error Handling

​Best Practices

​Security First

​Error Handling

​URL Parsing

​Common Use Cases

​Related Utilities

​Related Hooks

​TypeScript Support

Overview

Import

Signature

Parameters

Returns

Examples

Basic Usage

Custom Parameter Key

Secure Session Authentication

Password Security Validator

Secure URL Builder

Session Password Manager

URL Hash Structure

Security Considerations

Hash vs Query Parameters

Password Validation

Secure Storage

Error Handling

Best Practices

Security First

Error Handling

URL Parsing

Common Use Cases

Related Utilities

Related Hooks

TypeScript Support