Wifi 5GHz support added to wifi.recon

network/net_linux.go

@@ -1,9 +1,12 @@
 package network
 
 import (
+	"bufio"
 	"fmt"
 	"net"
 	"regexp"
+	"strconv"
+	"strings"
 
 	"github.com/evilsocket/bettercap-ng/core"
 )
@@ -13,6 +16,7 @@ var IPv4RouteParser = regexp.MustCompile("^(default|[0-9\\.]+)\\svia\\s([0-9\\.]
 var IPv4RouteTokens = 4
 var IPv4RouteCmd = "ip"
 var IPv4RouteCmdOpts = []string{"route"}
+var WiFiFreqParser = regexp.MustCompile("^\\s+Channel.([0-9]+)\\s+:\\s+([0-9\\.]+)\\s+GHz.*$")
 
 func IPv4RouteIsGateway(ifname string, tokens []string, f func(gateway string) (*Endpoint, error)) (*Endpoint, error) {
 	ifname2 := tokens[3]
@@ -39,3 +43,23 @@ func SetInterfaceChannel(iface string, channel int) error {
 	}
 	return nil
 }
+
+func GetSupportedFrequencies(iface string) ([]int, error) {
+	freqs := make([]int, 0)
+	out, err := core.Exec("iwlist", []string{iface, "freq"})
+	if err != nil {
+		return freqs, err
+	} else if out != "" {
+		scanner := bufio.NewScanner(strings.NewReader(out))
+		for scanner.Scan() {
+			line := scanner.Text()
+			matches := WiFiFreqParser.FindStringSubmatch(line)
+			if matches != nil && len(matches) == 3 {
+				if freq, err := strconv.ParseFloat(matches[2], 64); err == nil {
+					freqs = append(freqs, int(freq*1000))
+				}
+			}
+		}
+	}
+	return freqs, nil
+}