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utils.go
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/
utils.go
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// Copyright 2022 Praetorian Security, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package runner
import (
"errors"
"fmt"
"os"
"os/user"
"runtime"
"strconv"
"strings"
"time"
"github.com/omarbdrn/fingerprintx/pkg/plugins"
"github.com/omarbdrn/fingerprintx/pkg/scan"
)
func checkConfig(config cliConfig) error {
if len(config.outputFile) > 0 {
_, err := os.Stat(config.outputFile)
if !os.IsNotExist(err) && config.overwriteOutput {
fmt.Printf("File: %s already exists. Overwrite? [Y/N] ", config.outputFile)
fmt.Scan(&userInput)
if strings.ToLower(userInput)[0] != 'y' {
return fmt.Errorf("Output file %s already exists", config.outputFile)
}
}
}
if config.outputJSON && config.outputCSV {
return errors.New("Only one output format can be specified (JSON or CSV)")
}
if config.useUDP && config.verbose {
user, err := user.Current()
if err != nil {
return fmt.Errorf("Failed to retrieve current user (error: %w)", err)
}
if !((runtime.GOOS == "linux" || runtime.GOOS == "darwin") && user.Uid == "0") {
fmt.Fprintln(os.Stderr, "Note: UDP Scan may require root privileges")
}
}
if config.showErrors && !(config.outputJSON || config.outputCSV) {
return errors.New("showErrors requires results being output in JSON or CSV format")
}
return nil
}
func createScanConfig(config cliConfig) scan.Config {
return scan.Config{
DefaultTimeout: time.Duration(config.timeout) * time.Millisecond,
FastMode: config.fastMode,
UDP: config.useUDP,
Verbose: config.verbose,
}
}
func isPriorityPort(port int) bool {
protocols := []plugins.Protocol{plugins.UDP, plugins.TCP, plugins.TCPTLS}
for _, protocol := range protocols {
if pluginList, exists := plugins.Plugins[protocol]; exists {
for _, plugin := range pluginList {
if plugin.PortPriority(uint16(port)) {
return true
}
}
}
}
return false
}
func DefaultPortRange() string {
priorityPorts := make([]string, 0)
var port int
for port = 1; port <= 65535; port++ {
if isPriorityPort(port) {
priorityPorts = append(priorityPorts, strconv.Itoa(port))
}
}
return strings.Join(priorityPorts, ",")
}