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dict-utils.go
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/
dict-utils.go
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package utils
import (
"bufio"
"github.com/pkg/errors"
"io"
"os"
)
type BruteDictParser struct {
UserDictFile, PassDictFile *os.File
UserDict, PassDict *bufio.Scanner
offset int64
shouldUpdateUser bool
}
func NewBruteDictParser(userDict, passDict string) (*BruteDictParser, error) {
userDictFile, err := os.Open(userDict)
if err != nil {
return nil, errors.Errorf("failed to open user dict: %s", err)
}
passDictFile, err := os.Open(passDict)
if err != nil {
return nil, errors.Errorf("failed to open pass dict: %s", err)
}
userScanner := bufio.NewScanner(userDictFile)
userScanner.Split(bufio.ScanLines)
passScanner := bufio.NewScanner(passDictFile)
passScanner.Split(bufio.ScanLines)
//
//for userScanner.Scan() {
// user := userScanner.Text()
// for passScanner.Scan() {
// pass := passScanner.Text()
//
// currentUserOffset, _ := userDictFile.Seek(0, 1)
// currentPassOffset, _ := userDictFile.Seek(0, 1)
// log.Infof("fetching user: %s pass: %s offset: %d:%d", user, pass, currentUserOffset, currentPassOffset)
// }
//}
return &BruteDictParser{
UserDictFile: userDictFile,
PassDictFile: passDictFile,
UserDict: userScanner,
PassDict: passScanner,
offset: 0,
shouldUpdateUser: true,
}, nil
}
type UserPassPair struct {
Username, Password string
UserOffset, PassOffset int64
}
func (b *BruteDictParser) Next() (*UserPassPair, error) {
if b.shouldUpdateUser {
if !b.UserDict.Scan() {
return nil, io.EOF
}
b.shouldUpdateUser = false
}
user := b.UserDict.Text()
if !b.PassDict.Scan() {
_, err := b.PassDictFile.Seek(0, 0)
if err != nil {
return nil, errors.Errorf("seek 0,0 failed: %s", err)
}
b.PassDict = bufio.NewScanner(b.PassDictFile)
b.shouldUpdateUser = true
if !b.PassDict.Scan() {
return nil, errors.New("empty pass dict")
}
}
pass := b.PassDict.Text()
uOffset, err := b.UserDictFile.Seek(0, 1)
if err != nil {
return nil, errors.Errorf("seek 0,1 failed: %s", err)
}
pOffset, err := b.PassDictFile.Seek(0, 1)
if err != nil {
return nil, errors.Errorf("seek 0,1 failed: %s", err)
}
return &UserPassPair{
Username: user, Password: pass,
UserOffset: uOffset,
PassOffset: pOffset,
}, nil
}