towk/magellan
1
0
Fork 0
mirror of https://github.com/davidallendj/magellan.git synced 2025-12-20 03:27:03 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

Added function implementations to generate hosts by subnet and CIDR

Browse source
This commit is contained in:
David J. Allen 2023-10-16 14:37:23 -06:00
parent 994bf07716
commit 555ecf679d
3 changed files with 92 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

72
internal/scan.go
View file

@ -50,11 +50,79 @@ func rawConnect(host string, ports []int, timeout int, keepOpenOnly bool) []Scan
return results
}
func GenerateHosts(subnet string, begin uint8, end uint8) []string {
func GenerateHosts(subnet string, mask string, begin uint8, end uint8) []string {
hosts := []string{}
ip := net.ParseIP(subnet).To4()
for i := begin; i < end; i++ {
ip[3] = byte(i)
ip = util.GetNextIP(ip, 1)
hosts = append(hosts, fmt.Sprintf("%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]))
}
return hosts
}
func GenerateHostsWithCIDR(subnet string) []string {
// check for network with valid CIDR
ip, network, err := net.ParseCIDR(subnet)
if err != nil && (network != nil || ip != nil) {
network.Mask = ip.DefaultMask()
}
// check for IP with no CIDR
if ip == nil {
ip = net.ParseIP(subnet)
if ip == nil {
return nil
}
}
if network == nil {
network = &net.IPNet{
Mask: ip.DefaultMask(),
}
}
// get all IP addresses in network
return generateHosts(ip, network.Mask)
}
func GenerateHostsWithSubnet(subnet string, subnetMask string) []string {
// if no subnet mask, use a default 24-bit mask (for now)
if subnetMask != "" {
ip, network, err := net.ParseCIDR(subnet)
if err != nil && (network != nil || ip != nil) {
network.Mask = ip.DefaultMask()
}
// check for IP with no CIDR
if ip == nil {
ip = net.ParseIP(subnet)
if ip == nil {
return nil
}
}
if network == nil {
network = &net.IPNet{
Mask: ip.DefaultMask(),
}
}
return generateHosts(ip, network.Mask)
} else {
ip := net.ParseIP(subnetMask)
if ip != nil {
return []string{}
}
return generateHosts(ip, ip.DefaultMask())
}
}
func generateHosts(ip net.IP, mask net.IPMask) []string {
// get all IP addresses in network
ones, _ := mask.Size()
hosts := []string{}
fmt.Printf("ones: %d\n", ones)
for i := 0; i < 32-ones; i++ {
// ip[3] = byte(i)
ip = util.GetNextIP(ip, 1)
hosts = append(hosts, fmt.Sprintf("%d.%d.%d.%d", ip[0], ip[1], ip[2], ip[3]))
}
return hosts

12
internal/util/util.go
View file

@ -5,6 +5,7 @@ import (
"crypto/tls"
"fmt"
"io"
"net"
"net/http"
"os"
"time"
@ -17,6 +18,17 @@ func PathExists(path string) (bool, error) {
return false, err
}
func GetNextIP(ip net.IP, inc uint) net.IP {
i := ip.To4()
v := uint(i[0])<<24 + uint(i[1])<<16 + uint(i[2])<<8 + uint(i[3])
v += inc
v3 := byte(v & 0xFF)
v2 := byte((v >> 8) & 0xFF)
v1 := byte((v >> 16) & 0xFF)
v0 := byte((v >> 24) & 0xFF)
return net.IPv4(v0, v1, v2, v3)
}
func MakeRequest(url string, httpMethod string, body []byte, headers map[string]string) (*http.Response, []byte, error) {
http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
req, err := http.NewRequest(httpMethod, url, bytes.NewBuffer(body))