Added checking stage

network-scanner.py

@@ -1,68 +1,154 @@
-import socket
-from requests import get
-#Check If Port Is Open
-def isOpen(ip, port):
-        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-        s.settimeout(2)
-        try:
-                s.connect((ip, int(port)))
-                s.shutdown(socket.SHUT_RDWR)
-                file=open("rzlt.txt", "a+")
-                file.write(ip)
-                file.write("\n +++++++++++++++++++++++++++++ Code from R3DHULK +++++++++++++++++++++++++++++\n")
-                #return True
-                print(ip[0],"Is up")
-        except:
-                #return False
-                print("Is Down")
-        finally:
-                s.close()
-##Range Ip Function ipRange
-def ipRange(start_ip, end_ip):
-   start = list(map(int, start_ip.split(".")))
-   end = list(map(int, end_ip.split(".")))
-   temp = start
-   ip_range = []
-
-   ip_range.append(start_ip)
-   while temp != end:
-      start[3] += 1
-      for i in (3, 2, 1):
-         if temp[i] == 256:
-            temp[i] = 0
-            temp[i-1] += 1
-      ip_range.append(".".join(map(str, temp)))
-
-   return ip_range
-   pass
-
-#logo
-print ('''
-   **********************************************************************
-   *  _  _     _                  _     ___                             *
-   * | \| |___| |___ __ _____ _ _| |__ / __| __ __ _ _ _  _ _  ___ _ _  *
-   * | .` / -_)  _\ V  V / _ \ '_| / / \__ \/ _/ _` | ' \| ' \/ -_) '_| *
-   * |_|\_\___|\__|\_/\_/\___/_| |_\_\ |___/\__\__,_|_||_|_||_\___|_|   *
-   *                                                                    *
-   *    code from R3dHULK                                               *
-   *    github page : https://github.com/R3DHULK                        *
-   *                                                                    *
-   **********************************************************************
-''')
-
-# main start 
-From = input("Put Start From Range ➡️  " )
-To = input("Put End Of Range ➡️  " )
-ip_range = ipRange(From, To)
-port = input("Put Port To Check  in If It is Up ➡️  ")
-print("Stating 😊 😊 😊 :> From",From,"To",To)
-Exteral_IP = get('https://api.ipify.org').text #get External Ip
-print("HULK says your external ip is 👉 ",Exteral_IP)
-ok = input("Press Enter To Start ")
-print (" ")
-print ("*** Hulk came up with *** ")
-print (" ")
-for ip in ip_range:
-        print("Check For ",ip)
-        isOpen(ip,port)
-input("Enter To Exit")
+import socket
+import re
+import sys
+from requests import get
+
+# Function to validate IP address
+def is_valid_ip(ip):
+    # Regular expression for IPv4 address format validation
+    ip_pattern = r'^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$'
+    match = re.match(ip_pattern, ip)
+
+    if not match:
+        return False
+
+    # Check if each octet is in range 0-255
+    for i in range(1, 5):
+        octet = int(match.group(i))
+        if octet < 0 or octet > 255:
+            return False
+
+    return True
+
+# Function to validate port number
+def is_valid_port(port):
+    try:
+        port_num = int(port)
+        return 1 <= port_num <= 65535
+    except ValueError:
+        return False
+
+# Check If Port Is Open
+def isOpen(ip, port):
+    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    s.settimeout(2)
+    try:
+        s.connect((ip, int(port)))
+        s.shutdown(socket.SHUT_RDWR)
+        with open("rzlt.txt", "a+") as file:
+            file.write(ip)
+            file.write("\n +++++++++++++++++++++++++++++ Code from R3DHULK +++++++++++++++++++++++++++++\n")
+        print(ip, "Is up")
+    except socket.timeout:
+        print(f"{ip} - Connection timed out")
+    except ConnectionRefusedError:
+        print(f"{ip} - Connection refused")
+    except Exception as e:
+        print(f"{ip} - Is Down: {str(e)}")
+    finally:
+        s.close()
+
+# Range Ip Function ipRange
+def ipRange(start_ip, end_ip):
+    if not is_valid_ip(start_ip) or not is_valid_ip(end_ip):
+        print("Error: Invalid IP address format.")
+        return []
+
+    # Convert IP addresses to integers for comparison
+    def ip_to_int(ip):
+        octets = list(map(int, ip.split('.')))
+        return (octets[0] << 24) + (octets[1] << 16) + (octets[2] << 8) + octets[3]
+
+    start_int = ip_to_int(start_ip)
+    end_int = ip_to_int(end_ip)
+
+    if start_int > end_int:
+        print("Error: Start IP is greater than End IP.")
+        return []
+
+    if end_int - start_int > 1000:
+        proceed = input("Warning: You are about to scan more than 1000 IPs. Continue? (y/n): ")
+        if proceed.lower() != 'y':
+            return []
+
+    start = list(map(int, start_ip.split(".")))
+    end = list(map(int, end_ip.split(".")))
+    temp = start.copy()
+    ip_range = []
+    ip_range.append(start_ip)
+
+    while temp != end:
+        temp[3] += 1
+        for i in (3, 2, 1):
+            if temp[i] == 256:
+                temp[i] = 0
+                temp[i-1] += 1
+        ip_range.append(".".join(map(str, temp)))
+
+    return ip_range
+
+# logo
+print ('''
+   **********************************************************************
+   *  _  _     _                  _     ___                             *
+   * | \| |___| |___ __ _____ _ _| |__ / __| __ __ _ _ _  _ _  ___ _ _  *
+   * | .` / -_)  _\ V  V / _ \ '_| / / \__ \/ _/ _` | ' \| ' \/ -_) '_| *
+   * |_|\_\___|\__|\_/\_/\___/_| |_\_\ |___/\__\__,_|_||_|_||_\___|_|   *
+   *                                                                    *
+   *    code from R3dHULK                                               *
+   *    github page : https://github.com/R3DHULK                        *
+   *                                                                    *
+   **********************************************************************
+''')
+
+# Get valid IP input with validation
+def get_valid_ip_input(prompt):
+    while True:
+        ip = input(prompt)
+        if is_valid_ip(ip):
+            return ip
+        print("Error: Invalid IP address format. Example: 192.168.1.1")
+
+# Get valid port input with validation
+def get_valid_port_input():
+    while True:
+        port = input("Put Port To Check if It is Up: ")
+        if is_valid_port(port):
+            return port
+        print("Error: Invalid port number. Please enter a value between 1-65535.")
+
+# Main program
+try:
+    From = get_valid_ip_input("Put Start From Range: ")
+    To = get_valid_ip_input("Put End Of Range: ")
+
+    ip_range = ipRange(From, To)
+    if not ip_range:
+        print("There was a problem with the IP range. Exiting program.")
+        sys.exit(1)
+
+    port = get_valid_port_input()
+
+    print("Starting scan from", From, "to", To)
+
+    try:
+        External_IP = get('https://api.ipify.org').text  # get External Ip
+        print("Your external IP is:", External_IP)
+    except Exception as e:
+        print("Failed to retrieve external IP:", str(e))
+
+    ok = input("Press Enter To Start ")
+    print(" ")
+    print("*** Starting scan *** ")
+    print(" ")
+
+    for ip in ip_range:
+        print("Checking", ip)
+        isOpen(ip, port)
+
+    input("Press Enter To Exit")
+
+except KeyboardInterrupt:
+    print("\nProgram interrupted by user.")
+except Exception as e:
+    print(f"An unexpected error occurred: {str(e)}")