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package starainrt
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import (
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"bufio"
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"crypto"
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"crypto/md5"
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"crypto/rand"
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"crypto/rsa"
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"crypto/sha1"
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"crypto/sha256"
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"crypto/sha512"
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"crypto/x509"
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"encoding/base64"
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"encoding/binary"
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"encoding/hex"
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"encoding/pem"
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"errors"
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"fmt"
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"hash"
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"hash/crc32"
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"io"
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"io/ioutil"
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rands "math/rand"
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"os"
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"path/filepath"
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"regexp"
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"strconv"
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"strings"
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"time"
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)
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// StarCrypto 存储了单个校验方法的非编码元数据
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type StarCrypto struct {
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Sha1 []byte
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Sha224 []byte
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Sha256 []byte
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Sha386 []byte
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Sha512 []byte
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Crc32 []byte
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Md5 []byte
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}
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// Base64Encode 输出格式化后的Base64字符串
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func (starcpto StarCrypto) Base64Encode(bstr []byte) string {
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return base64.StdEncoding.EncodeToString(bstr)
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}
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// Base64Decode 输出解密前的Base64数据
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func (starcpto StarCrypto) Base64Decode(str string) ([]byte, error) {
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return base64.StdEncoding.DecodeString(str)
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}
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// MD5 输出MD5校验值
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func (starcpto *StarCrypto) MD5(bstr []byte) string {
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md5sum := md5.New()
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md5sum.Write(bstr)
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starcpto.Md5 = md5sum.Sum(nil)
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return hex.EncodeToString(starcpto.Md5)
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}
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// CRC32 输出CRC32校验值
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func (starcpto *StarCrypto) CRC32(bstr []byte) string {
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crcsum := crc32.NewIEEE()
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crcsum.Write(bstr)
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starcpto.Crc32 = crcsum.Sum(nil)
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return hex.EncodeToString(starcpto.Crc32)
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}
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// SHA512 输出SHA512校验值
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func (starcpto *StarCrypto) SHA512(bstr []byte) string {
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shasum := sha512.New()
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shasum.Write(bstr)
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starcpto.Sha512 = shasum.Sum(nil)
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return hex.EncodeToString(starcpto.Sha512)
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}
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// SHA256 输出SHA256校验值
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func (starcpto *StarCrypto) SHA256(bstr []byte) string {
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shasum := sha256.New()
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shasum.Write(bstr)
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starcpto.Sha256 = shasum.Sum(nil)
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return hex.EncodeToString(starcpto.Sha256)
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}
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// SHA1 输出SHA1校验值
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func (starcpto *StarCrypto) SHA1(bstr []byte) string {
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shasum := sha1.New()
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shasum.Write(bstr)
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starcpto.Sha1 = shasum.Sum(nil)
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return hex.EncodeToString(starcpto.Sha1)
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}
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// SumAll 可以对同一数据进行多种校验
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func (starcpto StarCrypto) SumAll(data []byte, method []string) (map[string]string, error) {
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result := make(map[string]string)
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methods := make(map[string]hash.Hash)
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var iscrc bool
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if len(method) == 0 {
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method = []string{"sha512", "sha256", "sha384", "sha224", "sha1", "crc32", "md5"}
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}
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sum512 := sha512.New()
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sum384 := sha512.New384()
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sum256 := sha256.New()
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sum224 := sha256.New224()
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sum1 := sha1.New()
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crcsum := crc32.NewIEEE()
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md5sum := md5.New()
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for _, v := range method {
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switch v {
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case "md5":
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methods["md5"] = md5sum
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case "crc32":
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iscrc = true
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case "sha1":
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methods["sha1"] = sum1
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case "sha224":
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methods["sha224"] = sum224
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case "sha256":
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methods["sha256"] = sum256
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case "sha384":
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methods["sha384"] = sum384
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case "sha512":
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methods["sha512"] = sum512
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}
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}
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for _, v := range methods {
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v.Write(data)
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}
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if iscrc {
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crcsum.Write(data)
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}
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for k, v := range methods {
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result[k] = hex.EncodeToString(v.Sum(nil))
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}
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if iscrc {
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result["crc32"] = hex.EncodeToString(crcsum.Sum(nil))
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}
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return result, nil
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}
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// FileSum 输出文件内容校验值，method为单个校验方法,小写
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//例：FileSum("./test.txt","md5",shell(pect float64){fmt.Sprintf("已完成 %f\r",pect)})
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func (starcpto StarCrypto) FileSum(filepath, method string, shell func(float64)) (string, error) {
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var sum hash.Hash
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var sum32 hash.Hash32
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var issum32 bool
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var result string
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if !Exists(filepath) {
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return "", errors.New("file not exists")
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}
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fp, err := os.Open(filepath)
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if err != nil {
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return "", err
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}
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switch method {
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case "sha512":
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sum = sha512.New()
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case "sha384":
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sum = sha512.New384()
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case "sha256":
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sum = sha256.New()
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case "sha224":
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sum = sha256.New224()
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case "sha1":
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sum = sha1.New()
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case "crc32":
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sum32 = crc32.NewIEEE()
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issum32 = true
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case "md5":
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sum = md5.New()
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default:
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return "", errors.New("Cannot Recognize The Method:" + method)
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}
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writer := 0
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stat, _ := os.Stat(filepath)
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filebig := float64(stat.Size())
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if !issum32 {
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// if _, err := io.Copy(sum, fp); err != nil {
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for {
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buf := make([]byte, 1048574)
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n, err := fp.Read(buf)
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if err != nil {
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if err == io.EOF {
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break
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}
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return result, err
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}
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writer += n
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pect := (float64(writer) / filebig) * 100
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go shell(pect)
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sum.Write(buf[0:n])
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}
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result = hex.EncodeToString(sum.Sum(nil))
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} else {
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for {
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buf := make([]byte, 1048574)
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n, err := fp.Read(buf)
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if err != nil {
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if err == io.EOF {
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break
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}
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return result, err
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}
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writer += n
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pect := (float64(writer) / filebig) * 100
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go shell(pect)
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sum32.Write(buf[0:n])
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}
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result = hex.EncodeToString(sum32.Sum(nil))
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}
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return result, nil
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}
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// FileSumAll 可以对同一文件进行多种校验
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func (starcpto StarCrypto) FileSumAll(filepath string, method []string, shell func(float64)) (map[string]string, error) {
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result := make(map[string]string)
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methods := make(map[string]hash.Hash)
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var iscrc bool
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if len(method) == 0 {
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method = []string{"sha512", "sha256", "sha384", "sha224", "sha1", "crc32", "md5"}
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}
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if !Exists(filepath) {
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return result, errors.New("file not exists")
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}
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fp, err := os.Open(filepath)
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defer fp.Close()
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if err != nil {
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return result, err
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}
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stat, _ := os.Stat(filepath)
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filebig := float64(stat.Size())
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sum512 := sha512.New()
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sum384 := sha512.New384()
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sum256 := sha256.New()
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sum224 := sha256.New224()
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sum1 := sha1.New()
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crcsum := crc32.NewIEEE()
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md5sum := md5.New()
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for _, v := range method {
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switch v {
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case "md5":
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methods["md5"] = md5sum
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case "crc32":
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iscrc = true
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case "sha1":
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methods["sha1"] = sum1
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case "sha224":
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methods["sha224"] = sum224
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case "sha256":
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methods["sha256"] = sum256
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case "sha384":
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methods["sha384"] = sum384
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case "sha512":
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methods["sha512"] = sum512
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}
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}
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writer := 0
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for {
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buf := make([]byte, 1048574)
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n, err := fp.Read(buf)
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if err != nil {
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if err == io.EOF {
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break
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}
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return result, err
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}
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writer += n
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pect := (float64(writer) / filebig) * 100
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go shell(pect)
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for _, v := range methods {
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v.Write(buf[0:n])
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}
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if iscrc {
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crcsum.Write(buf[0:n])
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}
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}
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for k, v := range methods {
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result[k] = hex.EncodeToString(v.Sum(nil))
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}
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if iscrc {
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result["crc32"] = hex.EncodeToString(crcsum.Sum(nil))
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}
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return result, nil
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}
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// Attach 合并src与dst文件并输出到output中
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func (starcpto StarCrypto) Attach(src, dst, output string) error {
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if !Exists(src) {
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return errors.New("source file not exists")
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}
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if !Exists(dst) {
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return errors.New("dst file not exists")
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}
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fpsrc, err := os.Open(src)
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if err != nil {
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return err
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}
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defer fpsrc.Close()
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fpdst, err := os.Open(dst)
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if err != nil {
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return err
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}
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defer fpdst.Close()
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fpout, err := os.Create(output)
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if err != nil {
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return err
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}
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defer fpout.Close()
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if _, err := io.Copy(fpout, fpsrc); err != nil {
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return err
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}
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for {
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buf := make([]byte, 1048574)
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n, err := fpdst.Read(buf)
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if err != nil {
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if err == io.EOF {
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break
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}
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return err
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}
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fpout.Write(buf[0:n])
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}
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return nil
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}
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// Detach 按bytenum字节大小分割src文件到dst1与dst2两个新文件中去
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func (starcpto StarCrypto) Detach(src string, bytenum int, dst1, dst2 string) error {
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if !Exists(src) {
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return errors.New("source file not exists")
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}
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fpsrc, err := os.Open(src)
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if err != nil {
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return err
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}
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defer fpsrc.Close()
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fpdst1, err := os.Create(dst1)
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if err != nil {
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return err
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}
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defer fpdst1.Close()
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fpdst2, err := os.Create(dst2)
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if err != nil {
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return err
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}
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defer fpdst2.Close()
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sumall := 0
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var buf []byte
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for {
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if bytenum-sumall < 1048576 {
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buf = make([]byte, bytenum-sumall)
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} else {
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buf = make([]byte, 1048576)
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}
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n, err := fpsrc.Read(buf)
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if err != nil {
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return err
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}
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sumall += n
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fpdst1.Write(buf[0:n])
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if sumall == bytenum {
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break
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}
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}
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for {
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buf = make([]byte, 1048576)
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n, err := fpsrc.Read(buf)
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if err != nil {
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if err == io.EOF {
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break
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}
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return err
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}
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fpdst2.Write(buf[0:n])
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}
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return nil
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}
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// Base64EncodeFile 用base64方法编码src文件到dst文件中去，shell传入当前进度
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func (starcpto StarCrypto) Base64EncodeFile(src, dst string, shell func(float64)) error {
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if !Exists(src) {
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return errors.New("source file not exists")
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}
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fpsrc, err := os.Open(src)
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if err != nil {
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return err
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}
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defer fpsrc.Close()
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stat, _ := os.Stat(src)
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filebig := float64(stat.Size())
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sum := 0
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fpdst, err := os.Create(dst)
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if err != nil {
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return err
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}
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defer fpdst.Close()
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b64 := base64.NewEncoder(base64.StdEncoding, fpdst)
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for {
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buf := make([]byte, 1048575)
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n, err := fpsrc.Read(buf)
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if err != nil {
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if err == io.EOF {
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break
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}
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return err
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}
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sum += n
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go shell(float64(sum) / filebig * 100)
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b64.Write(buf[0:n])
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}
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return nil
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}
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// Base64DecodeFile 用base64方法解码src文件到dst文件中去，shell传入当前进度
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func (starcpto StarCrypto) Base64DecodeFile(src, dst string, shell func(float64)) error {
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if !Exists(src) {
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return errors.New("source file not exists")
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}
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fpsrc, err := os.Open(src)
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if err != nil {
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return err
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}
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defer fpsrc.Close()
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stat, _ := os.Stat(src)
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filebig := float64(stat.Size())
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sum := 0
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defer fpsrc.Close()
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fpdst, err := os.Create(dst)
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if err != nil {
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return err
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}
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defer fpdst.Close()
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b64 := base64.NewDecoder(base64.StdEncoding, fpsrc)
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for {
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buf := make([]byte, 1048576)
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n, err := b64.Read(buf)
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if err != nil {
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if err == io.EOF {
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break
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}
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return err
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}
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sum += n
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go shell(float64(sum) / filebig * 100)
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fpdst.Write(buf[0:n])
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}
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return nil
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}
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// SplitFile 把src文件按要求分割到dst中去,dst应传入带*号字符串
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// 如果bynum=true 则把文件分割成num份
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// 如果bynum=false 则把文件按num字节分成多份
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|
|
func (starcpto StarCrypto) SplitFile(src, dst string, num int, bynum bool, shell func(float64)) error {
|
|
|
if !Exists(src) {
|
|
|
return errors.New("source file not exists")
|
|
|
}
|
|
|
fpsrc, err := os.Open(src)
|
|
|
if err != nil {
|
|
|
return err
|
|
|
}
|
|
|
defer fpsrc.Close()
|
|
|
stat, _ := os.Stat(src)
|
|
|
filebig := float64(stat.Size())
|
|
|
if bynum {
|
|
|
if int(filebig) < num {
|
|
|
return errors.New("file is too small to split")
|
|
|
}
|
|
|
}
|
|
|
balance := int(filebig/float64(num)) + 1
|
|
|
if !bynum {
|
|
|
balance = num
|
|
|
}
|
|
|
nownum := 0
|
|
|
fpdst, err := os.Create(strings.Replace(dst, "*", fmt.Sprint(nownum), -1))
|
|
|
if err != nil {
|
|
|
return err
|
|
|
}
|
|
|
defer fpdst.Close()
|
|
|
var sum, tsum int = 0, 0
|
|
|
var buf []byte
|
|
|
for {
|
|
|
if balance-sum < 1048576 {
|
|
|
buf = make([]byte, balance-sum)
|
|
|
} else {
|
|
|
buf = make([]byte, 1048576)
|
|
|
}
|
|
|
n, err := fpsrc.Read(buf)
|
|
|
if err != nil {
|
|
|
if err == io.EOF {
|
|
|
break
|
|
|
}
|
|
|
return err
|
|
|
}
|
|
|
sum += n
|
|
|
tsum += n
|
|
|
fpdst.Write(buf[0:n])
|
|
|
go shell(float64(tsum) / filebig * 100)
|
|
|
if sum == balance {
|
|
|
fpdst.Close()
|
|
|
nownum++
|
|
|
fpdst, err = os.Create(strings.Replace(dst, "*", fmt.Sprint(nownum), -1))
|
|
|
if err != nil {
|
|
|
return err
|
|
|
}
|
|
|
sum = 0
|
|
|
}
|
|
|
}
|
|
|
return nil
|
|
|
}
|
|
|
|
|
|
// MergeFile 合并src文件到dst文件中去，src文件应传入带*号字符串
|
|
|
func (starcpto StarCrypto) MergeFile(src, dst string, shell func(float64)) error {
|
|
|
tmp := strings.Replace(src, "*", "0", -1)
|
|
|
dir, err := ioutil.ReadDir(filepath.Dir(tmp))
|
|
|
if err != nil {
|
|
|
return err
|
|
|
}
|
|
|
base := filepath.Base(src)
|
|
|
tmp = strings.Replace(base, "*", "(\\d+)", -1)
|
|
|
reg := regexp.MustCompile(tmp)
|
|
|
count := 0
|
|
|
var filebig float64
|
|
|
for _, v := range dir {
|
|
|
if reg.MatchString(v.Name()) {
|
|
|
count++
|
|
|
filebig += float64(v.Size())
|
|
|
}
|
|
|
}
|
|
|
fpdst, err := os.Create(dst)
|
|
|
defer fpdst.Close()
|
|
|
if err != nil {
|
|
|
return err
|
|
|
}
|
|
|
sum := 0
|
|
|
for i := 0; i < count; i++ {
|
|
|
fpsrc, err := os.Open(strings.Replace(src, "*", strconv.Itoa(i), -1))
|
|
|
if err != nil {
|
|
|
return err
|
|
|
}
|
|
|
for {
|
|
|
buf := make([]byte, 1048576)
|
|
|
n, err := fpsrc.Read(buf)
|
|
|
if err != nil {
|
|
|
if err == io.EOF {
|
|
|
break
|
|
|
}
|
|
|
return err
|
|
|
}
|
|
|
sum += n
|
|
|
go shell(float64(sum) / filebig * 100)
|
|
|
fpdst.Write(buf[0:n])
|
|
|
}
|
|
|
fpsrc.Close()
|
|
|
}
|
|
|
return nil
|
|
|
}
|
|
|
|
|
|
// RSAEncrypt RSA公钥加密
|
|
|
func (starcpto StarCrypto) RSAEncrypt(data, public []byte) ([]byte, error) {
|
|
|
blk, _ := pem.Decode(public)
|
|
|
if blk == nil {
|
|
|
return []byte{}, errors.New("public key error")
|
|
|
}
|
|
|
pubkey, err := x509.ParsePKIXPublicKey(blk.Bytes)
|
|
|
if err != nil {
|
|
|
return []byte{}, err
|
|
|
}
|
|
|
return rsa.EncryptPKCS1v15(rand.Reader, pubkey.(*rsa.PublicKey), data)
|
|
|
}
|
|
|
|
|
|
// RSADecrypt RSA私钥解密
|
|
|
func (starcpto StarCrypto) RSADecrypt(data, private []byte, password string) ([]byte, error) {
|
|
|
var prikey *rsa.PrivateKey
|
|
|
var err error
|
|
|
var bytes []byte
|
|
|
blk, _ := pem.Decode(private)
|
|
|
if blk == nil {
|
|
|
return []byte{}, errors.New("private key error！")
|
|
|
}
|
|
|
if password != "" {
|
|
|
tmp, err := x509.DecryptPEMBlock(blk, []byte(password))
|
|
|
if err != nil {
|
|
|
return []byte{}, err
|
|
|
}
|
|
|
bytes = tmp
|
|
|
} else {
|
|
|
bytes = blk.Bytes
|
|
|
}
|
|
|
prikey, err = x509.ParsePKCS1PrivateKey(bytes)
|
|
|
if err != nil {
|
|
|
tmp, err := x509.ParsePKCS8PrivateKey(bytes)
|
|
|
if err != nil {
|
|
|
return []byte{}, err
|
|
|
}
|
|
|
prikey = tmp.(*rsa.PrivateKey)
|
|
|
}
|
|
|
return rsa.DecryptPKCS1v15(rand.Reader, prikey, data)
|
|
|
}
|
|
|
|
|
|
// RSASign RSA私钥签名加密
|
|
|
func (starcpto StarCrypto) RSASign(hashdata, private []byte, password string, hashtype crypto.Hash) ([]byte, error) {
|
|
|
var prikey *rsa.PrivateKey
|
|
|
var err error
|
|
|
var bytes []byte
|
|
|
blk, _ := pem.Decode(private)
|
|
|
if blk == nil {
|
|
|
return []byte{}, errors.New("private key error！")
|
|
|
}
|
|
|
if password != "" {
|
|
|
tmp, err := x509.DecryptPEMBlock(blk, []byte(password))
|
|
|
if err != nil {
|
|
|
return []byte{}, err
|
|
|
}
|
|
|
bytes = tmp
|
|
|
} else {
|
|
|
bytes = blk.Bytes
|
|
|
}
|
|
|
prikey, err = x509.ParsePKCS1PrivateKey(bytes)
|
|
|
if err != nil {
|
|
|
tmp, err := x509.ParsePKCS8PrivateKey(bytes)
|
|
|
if err != nil {
|
|
|
return []byte{}, err
|
|
|
}
|
|
|
prikey = tmp.(*rsa.PrivateKey)
|
|
|
}
|
|
|
return rsa.SignPKCS1v15(rand.Reader, prikey, hashtype, hashdata)
|
|
|
}
|
|
|
|
|
|
// RSAVerify RSA公钥签名验证
|
|
|
func (starcpto StarCrypto) RSAVerify(data, hashdata, public []byte, hashtype crypto.Hash) error {
|
|
|
blk, _ := pem.Decode(public)
|
|
|
if blk == nil {
|
|
|
return errors.New("public key error！")
|
|
|
}
|
|
|
pubkey, err := x509.ParsePKIXPublicKey(blk.Bytes)
|
|
|
if err != nil {
|
|
|
return err
|
|
|
}
|
|
|
return rsa.VerifyPKCS1v15(pubkey.(*rsa.PublicKey), hashtype, hashdata, data)
|
|
|
}
|
|
|
|
|
|
// VicqueEncodeV1 Best！
|
|
|
func (starcpto StarCrypto) VicqueEncodeV1(srcdata []byte, key string) []byte {
|
|
|
var keys []int
|
|
|
var saku, piku uint8
|
|
|
data := make([]byte, len(srcdata))
|
|
|
copy(data, srcdata)
|
|
|
binary.Read(rand.Reader, binary.LittleEndian, &saku)
|
|
|
binary.Read(rand.Reader, binary.LittleEndian, &piku)
|
|
|
keys = append(keys, len(key)+int(saku))
|
|
|
lens := len(data)
|
|
|
for _, v := range key {
|
|
|
keys = append(keys, int(byte(v))+int(saku)-int(piku))
|
|
|
}
|
|
|
lenkey := len(keys)
|
|
|
for k, v := range data {
|
|
|
if k == lens/2 {
|
|
|
break
|
|
|
}
|
|
|
nv := int(v)
|
|
|
t := 0
|
|
|
if k%2 == 0 {
|
|
|
nv += keys[k%lenkey]
|
|
|
if nv > 255 {
|
|
|
nv -= 256
|
|
|
}
|
|
|
t = int(data[lens-1-k])
|
|
|
t += keys[k%lenkey]
|
|
|
if t > 255 {
|
|
|
t -= 256
|
|
|
}
|
|
|
} else {
|
|
|
nv -= keys[k%lenkey]
|
|
|
if nv < 0 {
|
|
|
nv += 256
|
|
|
}
|
|
|
t = int(data[lens-1-k])
|
|
|
t -= keys[k%lenkey]
|
|
|
if t > 255 {
|
|
|
t += 256
|
|
|
}
|
|
|
}
|
|
|
data[k] = byte(t)
|
|
|
data[lens-1-k] = byte(nv)
|
|
|
}
|
|
|
data = append(data, byte(saku), byte(piku))
|
|
|
return data
|
|
|
}
|
|
|
|
|
|
// VicqueDecodeV1 Best！
|
|
|
func (starcpto StarCrypto) VicqueDecodeV1(srcdata []byte, key string) []byte {
|
|
|
var keys []int
|
|
|
var saku, piku int
|
|
|
data := make([]byte, len(srcdata))
|
|
|
copy(data, srcdata)
|
|
|
lens := len(data)
|
|
|
saku = int(data[lens-2])
|
|
|
piku = int(data[lens-1])
|
|
|
keys = append(keys, len(key)+int(saku))
|
|
|
for _, v := range key {
|
|
|
keys = append(keys, int(byte(v))+int(saku)-int(piku))
|
|
|
}
|
|
|
lenkey := len(keys)
|
|
|
lens -= 2
|
|
|
for k, v := range data {
|
|
|
if k == lens/2 {
|
|
|
break
|
|
|
}
|
|
|
nv := int(v)
|
|
|
t := 0
|
|
|
if k%2 == 0 {
|
|
|
nv -= keys[k%lenkey]
|
|
|
if nv < 0 {
|
|
|
nv += 256
|
|
|
}
|
|
|
t = int(data[lens-1-k])
|
|
|
t -= keys[k%lenkey]
|
|
|
if t > 255 {
|
|
|
t += 256
|
|
|
}
|
|
|
} else {
|
|
|
nv += keys[k%lenkey]
|
|
|
if nv > 255 {
|
|
|
nv -= 256
|
|
|
}
|
|
|
t = int(data[lens-1-k])
|
|
|
t += keys[k%lenkey]
|
|
|
if t > 255 {
|
|
|
t -= 256
|
|
|
}
|
|
|
}
|
|
|
data[k] = byte(t)
|
|
|
data[lens-1-k] = byte(nv)
|
|
|
}
|
|
|
return data[:lens]
|
|
|
}
|
|
|
|
|
|
// VicqueEncodeV1File best
|
|
|
func (starcpto StarCrypto) VicqueEncodeV1File(src, dst, pwd string, shell func(float64)) error {
|
|
|
fpsrc, err := os.Open(src)
|
|
|
if err != nil {
|
|
|
return err
|
|
|
}
|
|
|
defer fpsrc.Close()
|
|
|
stat, _ := os.Stat(src)
|
|
|
filebig := float64(stat.Size())
|
|
|
sum := 0
|
|
|
defer fpsrc.Close()
|
|
|
fpdst, err := os.Create(dst)
|
|
|
if err != nil {
|
|
|
return err
|
|
|
}
|
|
|
defer fpdst.Close()
|
|
|
for {
|
|
|
buf := make([]byte, 1048576)
|
|
|
n, err := fpsrc.Read(buf)
|
|
|
if err != nil {
|
|
|
if err == io.EOF {
|
|
|
break
|
|
|
}
|
|
|
return err
|
|
|
}
|
|
|
sum += n
|
|
|
go shell(float64(sum) / filebig * 100)
|
|
|
data := starcpto.VicqueEncodeV1(buf[0:n], pwd)
|
|
|
fpdst.Write(data)
|
|
|
}
|
|
|
return nil
|
|
|
}
|
|
|
|
|
|
// VicqueDecodeV1File best
|
|
|
func (starcpto StarCrypto) VicqueDecodeV1File(src, dst, pwd string, shell func(float64)) error {
|
|
|
fpsrc, err := os.Open(src)
|
|
|
if err != nil {
|
|
|
return err
|
|
|
}
|
|
|
defer fpsrc.Close()
|
|
|
stat, _ := os.Stat(src)
|
|
|
filebig := float64(stat.Size())
|
|
|
sum := 0
|
|
|
defer fpsrc.Close()
|
|
|
fpdst, err := os.Create(dst)
|
|
|
if err != nil {
|
|
|
return err
|
|
|
}
|
|
|
defer fpdst.Close()
|
|
|
for {
|
|
|
buf := make([]byte, 1048578)
|
|
|
n, err := fpsrc.Read(buf)
|
|
|
if err != nil {
|
|
|
if err == io.EOF {
|
|
|
break
|
|
|
}
|
|
|
return err
|
|
|
}
|
|
|
sum += n
|
|
|
go shell(float64(sum) / filebig * 100)
|
|
|
data := starcpto.VicqueDecodeV1(buf[0:n], pwd)
|
|
|
fpdst.Write(data)
|
|
|
}
|
|
|
return nil
|
|
|
}
|
|
|
|
|
|
// FillWithRandom 随机写filesize大小的文件，每次buf大小为bufcap，随机bufnum个字符
|
|
|
func FillWithRandom(filepath string, filesize int, bufcap int, bufnum int, shell func(float64)) error {
|
|
|
var buf [][]byte
|
|
|
var buftmp []byte
|
|
|
rands.Seed(time.Now().Unix())
|
|
|
if bufnum <= 0 {
|
|
|
bufnum = 1
|
|
|
}
|
|
|
if bufcap > filesize {
|
|
|
bufcap = filesize
|
|
|
}
|
|
|
myfile, err := os.Create(filepath)
|
|
|
if err != nil {
|
|
|
return err
|
|
|
}
|
|
|
defer myfile.Close()
|
|
|
writer := bufio.NewWriter(myfile)
|
|
|
for i := 0; i < bufnum; i++ {
|
|
|
buftmp = []byte{}
|
|
|
for j := 0; j < bufcap; j++ {
|
|
|
buftmp = append(buftmp, byte(rands.Intn(256)))
|
|
|
}
|
|
|
buf = append(buf, buftmp)
|
|
|
}
|
|
|
sum := 0
|
|
|
for {
|
|
|
if filesize-sum < bufcap {
|
|
|
writer.Write(buf[rands.Intn(bufnum)][0 : filesize-sum])
|
|
|
sum += filesize - sum
|
|
|
} else {
|
|
|
writer.Write(buf[rands.Intn(bufnum)])
|
|
|
sum += bufcap
|
|
|
}
|
|
|
go shell(float64(sum) / float64(filesize) * 100)
|
|
|
if sum >= filesize {
|
|
|
break
|
|
|
}
|
|
|
}
|
|
|
writer.Flush()
|
|
|
return nil
|
|
|
}
|