commit cacf168a5bb4252dc18d76163fa9d5acfb12a5cf
Author: Starainrt <i@b612.me>
Date:   Sun Oct 14 18:00:03 2018 +0800

    first commit

diff --git a/starainrt.go b/starainrt.go
new file mode 100644
index 0000000..2fa1df9
--- /dev/null
+++ b/starainrt.go
@@ -0,0 +1,671 @@
+package starainrt
+
+import (
+	"bufio"
+	"crypto/md5"
+	"crypto/rc4"
+	"crypto/sha1"
+	"crypto/sha256"
+	"crypto/sha512"
+	"encoding/base64"
+	"encoding/hex"
+	"fmt"
+	"hash/crc32"
+	"io"
+	"io/ioutil"
+	"os"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+func Exists(filepath string) bool {
+	_, err := os.Stat(filepath)
+	if err != nil && os.IsNotExist(err) {
+		return false
+	}
+	return true
+}
+func IsFile(fpath string) bool {
+	s, err := os.Stat(fpath)
+	if err != nil {
+		return false
+	}
+	return !s.IsDir()
+}
+func ReWriteFileByKV(filepath, rem, conn, ret string, kv map[string]string) bool {
+	var outputstr string
+	var ataru bool = false
+	if (!Exists(filepath)) || (!IsFile(filepath)) {
+		return false
+	}
+	fso, err := os.Open(filepath)
+	if err != nil {
+		return false
+	}
+	rempar := regexp.MustCompile("^" + rem)
+	buf := bufio.NewReader(fso)
+	for {
+		bytxt, _, eof := buf.ReadLine()
+		if eof == io.EOF {
+			break
+		}
+		txt := strings.TrimSpace(string(bytxt))
+		if rempar.Match([]byte(txt)) {
+			outputstr += txt + ret
+			continue
+		}
+		for k, v := range kv {
+			keypar := regexp.MustCompile("^" + k)
+			if keypar.Match([]byte(txt)) {
+				ataru = true
+				outputstr += k + conn + v + ret
+				delete(kv, k)
+			}
+		}
+		if ataru {
+			ataru = false
+			continue
+		} else {
+			outputstr += txt + ret
+		}
+	}
+	fso.Close()
+	if len(kv) != 0 {
+		for k, v := range kv {
+			outputstr += k + conn + v + ret
+			delete(kv, k)
+		}
+	}
+	err = ioutil.WriteFile(filepath, []byte(outputstr), 0755)
+	if err != nil {
+		return false
+	}
+	return true
+}
+
+func GetINIValue(filepath, rem, conn string, kv []string) (bool, map[string]string) {
+	outputstr := make(map[string]string)
+	if (!Exists(filepath)) || (!IsFile(filepath)) {
+		return false, outputstr
+	}
+	fso, err := os.Open(filepath)
+	if err != nil {
+		return false, outputstr
+	}
+	rempar := regexp.MustCompile("^" + rem)
+	buf := bufio.NewReader(fso)
+	for {
+		bytxt, _, eof := buf.ReadLine()
+		if eof == io.EOF {
+			break
+		}
+		txt := strings.TrimSpace(string(bytxt))
+		if rempar.Match([]byte(txt)) {
+			continue
+		}
+		var i int = 0
+		var v2 string
+		for k, v := range kv {
+			if v == "" {
+				continue
+			}
+			v2 = ""
+			for _, b := range []byte(v) {
+				switch string(b) {
+				case ".":
+					v2 += "\\."
+				case "\\":
+					v2 += "\\"
+				case "-":
+					v2 += "\\-"
+				case "(":
+					v2 += "\\("
+				case ")":
+					v2 += "\\)"
+				case "{":
+					v2 += "\\{"
+				case "}":
+					v2 += "\\}"
+				case "[":
+					v2 += "\\["
+				case "]":
+					v2 += "\\]"
+				case "$":
+					v2 += "\\]$"
+				case "^":
+					v2 += "\\^"
+				default:
+					v2 += string(b)
+				}
+			}
+			keypar := regexp.MustCompile("^" + v2 + ".*?" + conn + "(.*)")
+			if keypar.Match([]byte(txt)) {
+				i++
+				kekka := keypar.FindSubmatch([]byte(txt))
+				outputstr[v] = string(kekka[1])
+				kv[k] = ""
+			}
+		}
+		if i != len(kv) {
+			for _, v := range kv {
+				if v != "" {
+					outputstr[v] = ""
+				}
+			}
+		}
+	}
+	return true, outputstr
+}
+
+func SmallEncodeFileByBase64(filepath, outputname string, buffer int) bool {
+	if !Exists(filepath) {
+		return false
+	}
+	rempar := regexp.MustCompile(`(.*)\*(.*)`)
+	if !rempar.Match([]byte(outputname)) {
+		return false
+	}
+	rest := rempar.FindSubmatch([]byte(outputname))
+	par1 := string(rest[1])
+	par2 := string(rest[2])
+	bfile, _ := ioutil.ReadFile(filepath)
+	bitlen := len(bfile)
+	i := 1
+	var seed int = buffer
+	if bitlen > seed {
+		for bitlen > seed {
+			coder := base64.StdEncoding.EncodeToString(bfile[seed*(i-1) : seed*i])
+			ioutil.WriteFile(par1+strconv.Itoa(i)+par2, []byte(coder), 0755)
+			i++
+			bitlen -= seed
+		}
+	}
+	coder := base64.StdEncoding.EncodeToString(bfile[seed*(i-1):])
+	ioutil.WriteFile(par1+strconv.Itoa(i)+par2, []byte(coder), 0755)
+	return true
+}
+
+func SmallDecodeFileByBase64(inputname, outputname string, filesum int) bool {
+	rempar := regexp.MustCompile(`(.*)\*(.*)`)
+	if !rempar.Match([]byte(inputname)) {
+		return false
+	}
+	rest := rempar.FindSubmatch([]byte(inputname))
+	par1 := string(rest[1])
+	par2 := string(rest[2])
+	for i := 1; i <= filesum; i++ {
+		if !Exists(par1 + strconv.Itoa(i) + par2) {
+			return false
+		}
+	}
+	i := 1
+	big := filesum
+	res := []byte{}
+	for i <= big {
+		bfile, _ := ioutil.ReadFile(par1 + strconv.Itoa(i) + par2)
+		coder, _ := base64.StdEncoding.DecodeString(string(bfile))
+		for _, v := range coder {
+			res = append(res, v)
+		}
+		i++
+		//time.Sleep(time.Microsecond * 560)
+	}
+	ioutil.WriteFile(outputname, res, 0755)
+	return true
+}
+
+func EncodeFileByBase64(filepath, outputname string, buffer int) bool {
+	if !Exists(filepath) {
+		return false
+	}
+	rempar := regexp.MustCompile(`(.*)\*(.*)`)
+	if !rempar.Match([]byte(outputname)) {
+		return false
+	}
+	rest := rempar.FindSubmatch([]byte(outputname))
+	par1 := string(rest[1])
+	par2 := string(rest[2])
+	ret := SlitFile(filepath, outputname, 0, int64(buffer), int64(buffer)/10)
+	if !ret {
+		return false
+	}
+	i := 1
+	for {
+		if !Exists(par1 + strconv.Itoa(i) + par2) {
+			break
+		} else {
+			bfile, _ := ioutil.ReadFile(par1 + strconv.Itoa(i) + par2)
+			coder := base64.StdEncoding.EncodeToString(bfile)
+			ioutil.WriteFile(par1+strconv.Itoa(i)+par2, []byte(coder), 0755)
+
+		}
+		i++
+	}
+	return true
+}
+
+func DecodeFileByBase64(inputname, outputname string, filesum int) bool {
+	rempar := regexp.MustCompile(`(.*)\*(.*)`)
+	if !rempar.Match([]byte(inputname)) {
+		return false
+	}
+	rest := rempar.FindSubmatch([]byte(inputname))
+	par1 := string(rest[1])
+	par2 := string(rest[2])
+	if filesum != 0 {
+		for i := 1; i <= filesum; i++ {
+			if !Exists(par1 + strconv.Itoa(i) + par2) {
+				return false
+			}
+		}
+	} else {
+		var i int
+		for i = 1; ; i++ {
+			if !Exists(par1 + strconv.Itoa(i) + par2) {
+				break
+			}
+		}
+		filesum = i - 1
+	}
+	i := 1
+	big := filesum
+	fpw, _ := os.Create(outputname)
+	defer fpw.Close()
+	for i <= big {
+		bfile, _ := ioutil.ReadFile(par1 + strconv.Itoa(i) + par2)
+		coder, _ := base64.StdEncoding.DecodeString(string(bfile))
+		fpw.Write(coder)
+		i++
+		//time.Sleep(time.Microsecond * 560)
+	}
+	return true
+}
+
+func SlitFile(filename, outputname string, num int, databig, buffer int64) bool {
+	rempar := regexp.MustCompile(`(.*)\*(.*)`)
+	if !rempar.Match([]byte(outputname)) {
+		return false
+	}
+	rest := rempar.FindSubmatch([]byte(outputname))
+	par1 := string(rest[1])
+	par2 := string(rest[2])
+	if !Exists(filename) {
+		return false
+	}
+	fileinfo, _ := os.Stat(filename)
+	filesize := fileinfo.Size()
+	var spbyte int64
+	if num != 0 {
+		spbyte = filesize / int64(num)
+	}
+	if databig != 0 {
+		spbyte = databig
+		num = int(filesize/spbyte + 1)
+	}
+	if buffer == 0 {
+		buffer = spbyte / 10
+	}
+	if buffer > 100*1024*1024 {
+		buffer = 50 * 1024 * 1024
+	}
+	fp, _ := os.Open(filename)
+	defer fp.Close()
+	data := make([]byte, buffer)
+	var i int64 = 0
+	var k int = 1
+	fpw, _ := os.Create(par1 + strconv.Itoa(k) + par2)
+	for {
+		data = data[:cap(data)]
+
+		// read bytes to slice
+		n, err := fp.Read(data)
+		if err != nil {
+			if err == io.EOF {
+				break
+			}
+			fmt.Println(err)
+			break
+		}
+		i += int64(n)
+		data = data[:n]
+		fpw.Write(data)
+		if i > spbyte && k < num {
+			fpw.Close()
+			k++
+			i = 1
+			fpw, _ = os.Create(par1 + strconv.Itoa(k) + par2)
+			defer fpw.Close()
+		}
+	}
+	return true
+}
+
+func SpliceFile(inputname, outputname string, num int, buffer int64) bool {
+	rempar := regexp.MustCompile(`(.*)\*(.*)`)
+	if !rempar.Match([]byte(inputname)) {
+		return false
+	}
+	rest := rempar.FindSubmatch([]byte(inputname))
+	par1 := string(rest[1])
+	par2 := string(rest[2])
+	if num != 0 {
+		for i := 1; i <= num; i++ {
+			if !Exists(par1 + strconv.Itoa(i) + par2) {
+				return false
+			}
+		}
+	} else {
+		var i int
+		for i = 1; ; i++ {
+			if !Exists(par1 + strconv.Itoa(i) + par2) {
+				break
+			}
+		}
+		num = i - 1
+	}
+	fpw, _ := os.Create(outputname)
+	defer fpw.Close()
+	fileinfo, _ := os.Stat(par1 + "1" + par2)
+	filesize := fileinfo.Size()
+	if buffer == 0 {
+		buffer = filesize / 5
+	}
+	if buffer > 1024*1024*100 {
+		buffer = 1024 * 1024 * 100
+	}
+	data := make([]byte, buffer)
+	for i := 1; i <= num; i++ {
+		fp, _ := os.Open(par1 + strconv.Itoa(i) + par2)
+		for {
+			data = data[:cap(data)]
+			// read bytes to slice
+			n, err := fp.Read(data)
+			if err != nil {
+				if err == io.EOF {
+					break
+				}
+				fmt.Println(err)
+				break
+			}
+			data = data[:n]
+			fpw.Write(data)
+		}
+		fp.Close()
+	}
+	return true
+}
+
+func MixFile(filepath, outputname string, buffer int64, remix bool) bool {
+	if !Exists(filepath) || !IsFile(filepath) {
+		return false
+	}
+	fileinfo, _ := os.Stat(filepath)
+	filesize := fileinfo.Size()
+	if buffer == 0 {
+		buffer = filesize / 5
+	}
+	if buffer > 1024*1024*100 {
+		buffer = 1024 * 1024 * 100
+	}
+	var spbyte int64
+	if !remix {
+		spbyte = filesize / 2
+	} else {
+		spbyte = filesize - filesize/2
+	}
+	fpw, _ := os.Create(outputname)
+	defer fpw.Close()
+	fp, _ := os.Open(filepath)
+	defer fp.Close()
+	data := make([]byte, buffer)
+	_, _ = fp.Seek(spbyte, 0)
+	for {
+		data = data[:cap(data)]
+
+		// read bytes to slice
+		n, err := fp.Read(data)
+		if err != nil {
+			if err == io.EOF {
+				break
+			}
+			fmt.Println(err)
+			break
+		}
+		data = data[:n]
+		fpw.Write(data)
+	}
+	_, _ = fp.Seek(0, 0)
+	i := int64(0)
+	for {
+		data = data[:cap(data)]
+
+		// read bytes to slice
+		n, err := fp.Read(data)
+		if err != nil {
+			if err == io.EOF {
+				break
+			}
+			fmt.Println(err)
+			break
+		}
+		i += int64(n)
+		if i < spbyte {
+			data = data[:n]
+			fpw.Write(data)
+		} else {
+			data = data[:(int64(n) - i + spbyte)]
+			fpw.Write(data)
+			break
+		}
+	}
+	return true
+}
+
+func Md5File(filepath string) string {
+	f, err := os.Open(filepath)
+	if err != nil {
+		fmt.Println("Open", err)
+		return ""
+	}
+	defer f.Close()
+	md5hash := md5.New()
+	if _, err := io.Copy(md5hash, f); err != nil {
+		fmt.Println("Copy", err)
+		return ""
+	}
+	result := md5hash.Sum(nil)
+	return hex.EncodeToString(result)
+}
+
+func Crc32File(filepath string) string {
+	f, err := os.Open(filepath)
+	if err != nil {
+		fmt.Println("Open", err)
+		return ""
+	}
+
+	defer f.Close()
+	crchash := crc32.NewIEEE()
+	if _, err := io.Copy(crchash, f); err != nil {
+		fmt.Println("Copy", err)
+		return ""
+	}
+	result := crchash.Sum(nil)
+	return hex.EncodeToString(result)
+}
+
+func Sha1File(filepath string) string {
+	f, err := os.Open(filepath)
+	if err != nil {
+		fmt.Println("Open", err)
+		return ""
+	}
+
+	defer f.Close()
+	sha1hash := sha1.New()
+	if _, err := io.Copy(sha1hash, f); err != nil {
+		fmt.Println("Copy", err)
+		return ""
+	}
+	result := sha1hash.Sum(nil)
+	return hex.EncodeToString(result)
+}
+
+func Sha256File(filepath string) string {
+	f, err := os.Open(filepath)
+	if err != nil {
+		fmt.Println("Open", err)
+		return ""
+	}
+
+	defer f.Close()
+	sha256hash := sha256.New()
+	if _, err := io.Copy(sha256hash, f); err != nil {
+		fmt.Println("Copy", err)
+		return ""
+	}
+	result := sha256hash.Sum(nil)
+	return hex.EncodeToString(result)
+}
+
+func Sha512File(filepath string) string {
+	f, err := os.Open(filepath)
+	if err != nil {
+		fmt.Println("Open", err)
+		return ""
+	}
+
+	defer f.Close()
+	sha512hash := sha512.New()
+	if _, err := io.Copy(sha512hash, f); err != nil {
+		fmt.Println("Copy", err)
+		return ""
+	}
+	result := sha512hash.Sum(nil)
+	return hex.EncodeToString(result)
+}
+
+func RC4File(filepath string, key []byte) string {
+	rc4obj, _ := rc4.NewCipher(key)
+	plain, _ := ioutil.ReadFile(filepath)
+	res := make([]byte, len(plain))
+	rc4obj.XORKeyStream(res, plain)
+	return hex.EncodeToString(res)
+}
+func DetachFile(source, output1, output2 string, key int64) bool {
+	if !Exists(source) {
+		return false
+	}
+	fin, _ := os.Stat(source)
+	filesize := fin.Size()
+	fpw, _ := os.Create(output1)
+	fp, _ := os.Open(source)
+	defer fp.Close()
+	buffer := filesize / 10
+	if buffer > 100*1024*1024 {
+		buffer = 100 * 1024 * 1024
+	}
+	data := make([]byte, buffer)
+	i := int64(0)
+	for {
+		data = data[:cap(data)]
+
+		// read bytes to slice
+		n, err := fp.Read(data)
+		if err != nil {
+			if err == io.EOF {
+				break
+			}
+			fmt.Println(err)
+			break
+		}
+		i += int64(n)
+		if i < key {
+			data = data[:n]
+			fpw.Write(data)
+		} else {
+			data = data[:(int64(n) - i + key)]
+			fpw.Write(data)
+			break
+		}
+	}
+	fpw.Close()
+	_, _ = fp.Seek(key+20, 0)
+	fpw, _ = os.Create(output2)
+	for {
+		data = data[:cap(data)]
+
+		// read bytes to slice
+		n, err := fp.Read(data)
+		if err != nil {
+			if err == io.EOF {
+				break
+			}
+			fmt.Println(err)
+			break
+		}
+		data = data[:n]
+		fpw.Write(data)
+	}
+	return true
+}
+func AttachFile(source, target, output string) (bool, string) {
+	if !Exists(source) {
+		return false, ""
+	}
+	if !Exists(target) {
+		return false, ""
+	}
+	fin, _ := os.Stat(source)
+	filesize := fin.Size()
+	_ = ioutil.WriteFile(output+".ini", []byte(strconv.FormatInt(filesize, 10)), 0755)
+	fpw, _ := os.Create(output)
+	defer fpw.Close()
+	fp, _ := os.Open(source)
+	buffer := filesize / 10
+	if buffer > 100*1024*1024 {
+		buffer = 100 * 1024 * 1024
+	}
+	data := make([]byte, buffer)
+	for {
+		data = data[:cap(data)]
+		// read bytes to slice
+		n, err := fp.Read(data)
+		if err != nil {
+			if err == io.EOF {
+				break
+			}
+			fmt.Println(err)
+			break
+		}
+		data = data[:n]
+		fpw.Write(data)
+	}
+	fp.Close()
+	fpw.Write([]byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0})
+	fin, _ = os.Stat(target)
+	filesize2 := fin.Size()
+	fp, _ = os.Open(target)
+	buffer = filesize2 / 10
+	if buffer > 100*1024*1024 {
+		buffer = 100 * 1024 * 1024
+	}
+	data = make([]byte, buffer)
+	for {
+		data = data[:cap(data)]
+		// read bytes to slice
+		n, err := fp.Read(data)
+		if err != nil {
+			if err == io.EOF {
+				break
+			}
+			fmt.Println(err)
+			break
+		}
+		data = data[:n]
+		fpw.Write(data)
+	}
+	fp.Close()
+	return true, strconv.FormatInt(filesize, 10)
+}