112 lines
3.0 KiB
Go
112 lines
3.0 KiB
Go
package main
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import (
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"crypto/aes"
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"crypto/cipher"
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"crypto/rand"
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"crypto/sha256"
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"encoding/hex"
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"errors"
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"fmt"
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"log"
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"math/big"
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"strings"
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)
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// Update operators tab-completion struct
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func UpdateListenersTabCompletion() {
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// Broadcast updated listener list
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updatedListeners := GetListenerNames()
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updateMessage := fmt.Sprintf("LISTENERS_UPDATE:%s", strings.Join(updatedListeners, ","))
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SendMessageToAllOperators(updateMessage)
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}
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// Update operators tab-completion struct
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func UpdateAgentsTabCompletion() {
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// Broadcast updated agents list
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updatedAgents := GetAgentNames()
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updateMessage := fmt.Sprintf("AGENTS_UPDATE:%s", strings.Join(updatedAgents, ","))
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SendMessageToAllOperators(updateMessage)
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}
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// Send message to all operators online
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func SendMessageToAllOperators(message string) {
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Operators.Range(func(key, value interface{}) bool {
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id := key.(string)
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operator := value.(*Operator)
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if operator.Authenticated {
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_, err := operator.Conn.Write([]byte(message))
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if err != nil {
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log.Printf("Failed to send message to operator %s (%s): %v", id, operator.OperatorIP.String(), err)
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}
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// log.Printf("Message sent to operator %s (%s)", id, operator.OperatorIP.String())
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} else {
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log.Printf("Skipping unauthenticated operator %s (%s)", id, operator.OperatorIP.String())
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}
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// Return true to continue iterating
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return true
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})
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}
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// Get hash of password
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func HashPassword(password *string) string {
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hash := sha256.Sum256([]byte(*password))
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return hex.EncodeToString(hash[:])
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}
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// Encrypt/decrypt
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func encryptAES128CTR(plaintext, key, iv []byte) ([]byte, error) {
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if len(iv) != aes.BlockSize {
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return nil, errors.New("IV length must be equal to AES block size (16 bytes)")
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}
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if len(key) != 16 {
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return nil, errors.New("key length must be 16 bytes for AES-128")
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}
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block, err := aes.NewCipher(key)
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if err != nil {
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return nil, err
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}
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stream := cipher.NewCTR(block, iv)
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ciphertext := make([]byte, len(plaintext))
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stream.XORKeyStream(ciphertext, plaintext)
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return ciphertext, nil
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}
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// Generates key and IV for AES-128
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func GenerateKeyAndIV() (string, string, error) {
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// Define alphanumeric character set
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const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
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charsetLength := big.NewInt(int64(len(charset)))
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// Generate first string
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str1, err := generateString(charset, charsetLength, 16)
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if err != nil {
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return "", "", fmt.Errorf("error generating first string: %v", err)
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}
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// Generate second string
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str2, err := generateString(charset, charsetLength, 16)
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if err != nil {
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return "", "", fmt.Errorf("error generating second string: %v", err)
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}
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return str1, str2, nil
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}
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// Helper function to generate a random string of specified length
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func generateString(charset string, charsetLength *big.Int, length int) (string, error) {
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result := make([]byte, length)
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for i := 0; i < length; i++ {
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n, err := rand.Int(rand.Reader, charsetLength)
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if err != nil {
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return "", err
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}
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result[i] = charset[n.Int64()]
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}
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return string(result), nil
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}
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