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config.go
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package main
import (
"crypto/tls"
"flag"
"fmt"
"net/http"
"strconv"
"strings"
)
type Config struct {
extension string
httpClient *http.Client
ignoreCodes []int
ignoreBody string
method string
numThreads int
recursive bool
url string
userAgent string
}
func initConfig() {
// sane defaults
config.ignoreCodes = []int{404}
config.method = "GET"
config.numThreads = 4
config.recursive = false
config.userAgent = "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.1; Trident/6.0)"
// properly handle redirs and SSL cert verification errors
config.httpClient = &http.Client{
CheckRedirect: func(req *http.Request, via []*http.Request) error {
return http.ErrUseLastResponse
},
Transport: &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
},
}
}
func parseCmdLine() {
var ignoreCodes string
flag.StringVar(&config.userAgent, "a", config.userAgent, "Set User-Agent string")
flag.StringVar(&ignoreCodes, "i", "", "Ignore specified status codes, comma-sep (e.g., 403,404,500)")
flag.StringVar(&config.ignoreBody, "b", "", "Ignore specified string in <body>")
flag.StringVar(&config.method, "m", config.method, "HTTP method (e.g., GET, HEAD)")
flag.BoolVar(&config.recursive, "r", config.recursive, "Recurse into subdirectories")
flag.IntVar(&config.numThreads, "t", config.numThreads, "Number of worker threads")
flag.StringVar(&config.url, "u", "", "Base URL (e.g., https://example.com:8443/dir/)")
flag.StringVar(&config.extension, "x", "", "Add this file extension to all guesses")
flag.Parse()
if config.url == "" {
flag.Usage()
panic("Base URL not specified (-u)")
}
if config.recursive && config.extension != "" {
config.recursive = false
fmt.Println("Can't use recursion with a file extension. Recursion disabled.")
}
if config.extension != "" && config.extension[0] == '.' {
config.extension = config.extension[1:]
}
if len(ignoreCodes) > 0 {
parseIgnoreCodes(ignoreCodes)
}
}
func parseIgnoreCodes(input string) {
codes := strings.Split(input, ",")
for _, v := range codes {
if num, err := strconv.Atoi(v); err == nil {
config.ignoreCodes = appendIfUnique(config.ignoreCodes, num)
} else {
fmt.Println("Ignoring invalid status code:", v)
}
}
}
func appendIfUnique(slice []int, i int) []int {
for _, ele := range slice {
if ele == i {
return slice
}
}
return append(slice, i)
}