func readUntilCrLf(con *net.TCPConn) (line []byte, err os.Error) {
buf := make([]byte, 1)
var data []byte
crSeen := false
for {
_, err := con.Read(buf)
if err != nil {
if err == os.EOF {
break
} else {
return nil, err
}
}
if crSeen {
if buf[0] == 10 {
break
} else {
crSeen = false
data = bytes.Add(data, buf)
}
} else {
if buf[0] == 13 {
crSeen = true
} else {
data = bytes.Add(data, buf)
}
}
}
return data, nil
}
// Extract regular text from the beginning of the pattern.
// That text can be used by doExecute to speed up matching.
func (re *Regexp) setPrefix() {
var b []byte
var utf = make([]byte, utf8.UTFMax)
// First instruction is start; skip that.
i := re.inst.At(0).(instr).next().index()
Loop:
for i < re.inst.Len() {
inst := re.inst.At(i).(instr)
// stop if this is not a char
if inst.kind() != _CHAR {
break
}
// stop if this char can be followed by a match for an empty string,
// which includes closures, ^, and $.
switch re.inst.At(inst.next().index()).(instr).kind() {
case _BOT, _EOT, _ALT:
break Loop
}
n := utf8.EncodeRune(inst.(*_Char).char, utf)
b = bytes.Add(b, utf[0:n])
i = inst.next().index()
}
// point prefixStart instruction to first non-CHAR after prefix
re.prefixStart = re.inst.At(i).(instr)
re.prefixBytes = b
re.prefix = string(b)
}
// UnmarshalJSON sets *m to a copy of data.
func (m *RawMessage) UnmarshalJSON(data []byte) os.Error {
if m == nil {
return os.NewError("json.RawMessage: UnmarshalJSON on nil pointer")
}
*m = bytes.Add((*m)[0:0], data)
return nil
}
// readHandshake reads the next handshake message from
// the record layer.
// c.in.Mutex < L; c.out.Mutex < L.
func (c *Conn) readHandshake() (interface{}, os.Error) {
for c.hand.Len() < 4 {
if c.err != nil {
return nil, c.err
}
c.readRecord(recordTypeHandshake)
}
data := c.hand.Bytes()
n := int(data[1])<<16 | int(data[2])<<8 | int(data[3])
if n > maxHandshake {
c.sendAlert(alertInternalError)
return nil, c.err
}
for c.hand.Len() < 4+n {
if c.err != nil {
return nil, c.err
}
c.readRecord(recordTypeHandshake)
}
data = c.hand.Next(4 + n)
var m handshakeMessage
switch data[0] {
case typeClientHello:
m = new(clientHelloMsg)
case typeServerHello:
m = new(serverHelloMsg)
case typeCertificate:
m = new(certificateMsg)
case typeCertificateRequest:
m = new(certificateRequestMsg)
case typeCertificateStatus:
m = new(certificateStatusMsg)
case typeServerHelloDone:
m = new(serverHelloDoneMsg)
case typeClientKeyExchange:
m = new(clientKeyExchangeMsg)
case typeCertificateVerify:
m = new(certificateVerifyMsg)
case typeNextProtocol:
m = new(nextProtoMsg)
case typeFinished:
m = new(finishedMsg)
default:
c.sendAlert(alertUnexpectedMessage)
return nil, alertUnexpectedMessage
}
// The handshake message unmarshallers
// expect to be able to keep references to data,
// so pass in a fresh copy that won't be overwritten.
data = bytes.Add(nil, data)
if !m.unmarshal(data) {
c.sendAlert(alertUnexpectedMessage)
return nil, alertUnexpectedMessage
}
return m, nil
}
func EncodeSOA(soa SOArecord) []byte {
var (
result []byte
temp32 []byte
)
mname := Encode(soa.Mname)
length := len(mname)
rname := Encode(soa.Rname)
length = length + len(rname)
length = length + (5 * 4) // Five 32-bits counter at the end
/* "It's probably cleaner to write to a bytes.Buffer than to
repeatedly call bytes.Add." Russ Cox, go-nuts ML */
result = bytes.Add(result, mname)
result = bytes.Add(result, rname)
temp32 = make([]byte, 4)
binary.BigEndian.PutUint32(temp32, soa.Serial)
result = bytes.Add(result, temp32)
binary.BigEndian.PutUint32(temp32, soa.Refresh)
result = bytes.Add(result, temp32)
binary.BigEndian.PutUint32(temp32, soa.Retry)
result = bytes.Add(result, temp32)
binary.BigEndian.PutUint32(temp32, soa.Expire)
result = bytes.Add(result, temp32)
binary.BigEndian.PutUint32(temp32, soa.Minimum)
result = bytes.Add(result, temp32)
return result[0:length]
}
// To use with messages that receive a response from database
// 'opQuery', 'opGetMore'.
func (self *Connection) sendMessageToReply(m message, reqID int32) os.Error {
body := m.Bytes()
h := header(msgHeader{int32(len(body) + _HEADER_SIZE), reqID, 0, m.OpCode()})
msg := bytes.Add(h, body)
_, err := self.conn.Write(msg)
return err
}
func Decode(b []byte) []byte {
r := make([]byte, len(b)*2)[0:0]
for {
if b[0] != 128 {
break
}
if b[1] == 3 {
break
}
l := int(b[2]) + (int(b[3]) << 8) + (int(b[4]) << 16) + 6
if b[1] == 1 {
r = bytes.Add(r, b[6:l])
} else {
r = bytes.Add(r, hex.Encode(b[6:l]))
}
b = b[l:]
}
return r
}
func (c *Connection) writeMessage(m message) os.Error {
body := m.Bytes()
hb := header(int32(len(body)+16), m.RequestID(), 0, m.OpCode())
msg := bytes.Add(hb, body)
_, err := c.conn.Write(msg)
last_req = m.RequestID()
return err
}
func (self *_Object) Bytes() []byte {
buf := bytes.NewBuffer([]byte{})
for k, v := range self.value {
buf.WriteByte(byte(v.Kind()))
buf.WriteString(k)
buf.WriteByte(0)
buf.Write(v.Bytes())
}
buf.WriteByte(0)
l := buf.Len() + 4
w32 := make([]byte, _WORD32)
pack.PutUint32(w32, uint32(l))
return bytes.Add(w32, buf.Bytes())
}
func (self *_Array) Bytes() []byte {
buf := bytes.NewBuffer([]byte{})
for i := 0; i < self.value.Len(); i++ {
v := self.value.At(i).(BSON)
buf.WriteByte(byte(v.Kind()))
buf.WriteString(strconv.Itoa(i))
buf.WriteByte(0)
buf.Write(v.Bytes())
}
buf.WriteByte(0)
l := buf.Len() + 4
w32 := make([]byte, _WORD32)
pack.PutUint32(w32, uint32(l))
return bytes.Add(w32, buf.Bytes())
}
func Repeat(alu []byte, n int) {
buf := bytes.Add(alu, alu)
off := 0
for n > 0 {
m := n
if m > Line {
m = Line
}
buf1 := out.NextWrite(m + 1)
copy(buf1, buf[off:])
buf1[m] = '\n'
if off += m; off >= len(alu) {
off -= len(alu)
}
n -= m
}
}
func (self *Client) simpleQuery(command int, version int, size int, body []byte) ([]byte, os.Error) {
conn, err := self.connect()
if err != nil {
return nil, err
}
header := make([]byte, 8+len(body))
binary.BigEndian.PutUint16(header[0:2], uint16(command))
binary.BigEndian.PutUint16(header[2:4], uint16(version))
binary.BigEndian.PutUint32(header[4:8], uint32(size))
request := bytes.Add(header, body)
_, err = conn.Write(request)
if err != nil {
return nil, err
}
return self.getResponse(conn)
}
// ReadAll takes an os.File as it's argument and reads in all of it until
// it signals to stop with an EOF in
func ReadAll(file * os.File) ([]byte, os.Error) {
const BUFSIZE = 1024
result := make([]byte, 0)
buf := make([]byte, BUFSIZE)
var sub []byte
for { // ever
count, err2 := file.Read(buf)
sub = buf[0:count]
// get right slice to append to result
// append bytes to result
if count > 0 {
result = bytes.Add(result, sub)
}
// if EOF, return the result.
if err2 == os.EOF { return result, nil }
// on any other error return nil
if err2 != nil { return nil , err2 }
}
// should not get here
return nil, os.NewError("Can't happen?!");
}
func TestRecords(t *testing.T) {
for i, test := range recordsTests {
buf := bytes.NewBuffer(test.raw)
content, reqId, kind, err := readRecord(buf)
if err != nil {
t.Errorf("%d error reading record: %s", i, err.String())
goto write
}
for buf.Len() > 0 {
moreContent, _, _, err := readRecord(buf)
if err != nil {
t.Errorf("%d error reading additional record: %s", i, err.String())
goto write
}
content = bytes.Add(content, moreContent)
}
if kind != test.kind {
t.Errorf("%d got kind %d expected %d", i, kind, test.kind)
}
if reqId != test.reqId {
t.Errorf("%d got request ID %d expected %d", i, kind, test.kind)
}
if !bytes.Equal(content, test.content) {
t.Errorf("%d read wrong content", i)
}
write:
buf.Reset()
c := &lockReadWriteCloser{ReadWriteCloser: &nilCloser{buf}}
err = writeRecord(c, test.kind, test.reqId, test.content)
if err != nil {
t.Errorf("%d error writing record: %s", i, err.String())
continue
}
if !bytes.Equal(buf.Bytes(), test.raw) {
t.Errorf("%d wrote wrong content", i)
}
}
}
func TestNextValueBig(t *testing.T) {
var scan scanner
item, rest, err := nextValue(jsonBig, &scan)
if err != nil {
t.Fatalf("nextValue: ", err)
}
if len(item) != len(jsonBig) || &item[0] != &jsonBig[0] {
t.Errorf("invalid item: %d %d", len(item), len(jsonBig))
}
if len(rest) != 0 {
t.Errorf("invalid rest: %d", len(rest))
}
item, rest, err = nextValue(bytes.Add(jsonBig, []byte("HELLO WORLD")), &scan)
if err != nil {
t.Fatalf("nextValue extra: ", err)
}
if len(item) != len(jsonBig) {
t.Errorf("invalid item: %d %d", len(item), len(jsonBig))
}
if string(rest) != "HELLO WORLD" {
t.Errorf("invalid rest: %d", len(rest))
}
}
// ReadContinuedLineBytes is like ReadContinuedLine but
// returns a []byte instead of a string.
func (r *Reader) ReadContinuedLineBytes() ([]byte, os.Error) {
// Read the first line.
line, err := r.ReadLineBytes()
if err != nil {
return line, err
}
if len(line) == 0 { // blank line - no continuation
return line, nil
}
line = trim(line)
// Look for a continuation line.
c, err := r.R.ReadByte()
if err != nil {
// Delay err until we read the byte next time.
return line, nil
}
if c != ' ' && c != '\t' {
// Not a continuation.
r.R.UnreadByte()
return line, nil
}
// Read continuation lines.
for {
// Consume leading spaces; one already gone.
for {
c, err = r.R.ReadByte()
if err != nil {
break
}
if c != ' ' && c != '\t' {
r.R.UnreadByte()
break
}
}
var cont []byte
cont, err = r.ReadLineBytes()
cont = trim(cont)
line = bytes.Add(line, space)
line = bytes.Add(line, cont)
if err != nil {
break
}
// Check for leading space on next line.
if c, err = r.R.ReadByte(); err != nil {
break
}
if c != ' ' && c != '\t' {
r.R.UnreadByte()
break
}
}
// Delay error until next call.
if len(line) > 0 {
err = nil
}
return line, err
}
func TestEncodeFloat64(t *testing.T) {
expected := bytes.Add([]byte{MAGIC, FLOAT}, strings.Bytes(fmt.Sprintf("%.20e", float64(1.2e3))))
testEncode(t, "Encoding float64 failed", 1.2e3, expected)
}
func TestEncodeString(t *testing.T) {
expected := bytes.Add([]byte{MAGIC, BIN, 0, 0, 0, 3}, strings.Bytes("foo"))
testEncode(t, "Encoding string failed", "foo", expected)
}
// Unmarshal a single XML element into val.
func (p *Parser) unmarshal(val reflect.Value, start *StartElement) os.Error {
// Find start element if we need it.
if start == nil {
for {
tok, err := p.Token()
if err != nil {
return err
}
if t, ok := tok.(StartElement); ok {
start = &t
break
}
}
}
if pv, ok := val.(*reflect.PtrValue); ok {
if pv.Get() == 0 {
zv := reflect.MakeZero(pv.Type().(*reflect.PtrType).Elem())
pv.PointTo(zv)
val = zv
} else {
val = pv.Elem()
}
}
var (
data []byte
saveData reflect.Value
comment []byte
saveComment reflect.Value
sv *reflect.StructValue
styp *reflect.StructType
)
switch v := val.(type) {
default:
return os.ErrorString("unknown type " + v.Type().String())
case *reflect.BoolValue:
v.Set(true)
case *reflect.SliceValue:
typ := v.Type().(*reflect.SliceType)
if _, ok := typ.Elem().(*reflect.Uint8Type); ok {
// []byte
saveData = v
break
}
// Slice of element values.
// Grow slice.
n := v.Len()
if n >= v.Cap() {
ncap := 2 * n
if ncap < 4 {
ncap = 4
}
new := reflect.MakeSlice(typ, n, ncap)
reflect.ArrayCopy(new, v)
v.Set(new)
}
v.SetLen(n + 1)
// Recur to read element into slice.
if err := p.unmarshal(v.Elem(n), start); err != nil {
v.SetLen(n)
return err
}
return nil
case *reflect.StringValue,
*reflect.IntValue, *reflect.UintValue, *reflect.UintptrValue,
*reflect.Int8Value, *reflect.Int16Value, *reflect.Int32Value, *reflect.Int64Value,
*reflect.Uint8Value, *reflect.Uint16Value, *reflect.Uint32Value, *reflect.Uint64Value,
*reflect.FloatValue, *reflect.Float32Value, *reflect.Float64Value:
saveData = v
case *reflect.StructValue:
if _, ok := v.Interface().(Name); ok {
v.Set(reflect.NewValue(start.Name).(*reflect.StructValue))
break
}
sv = v
typ := sv.Type().(*reflect.StructType)
styp = typ
// Assign name.
if f, ok := typ.FieldByName("XMLName"); ok {
// Validate element name.
if f.Tag != "" {
tag := f.Tag
ns := ""
i := strings.LastIndex(tag, " ")
if i >= 0 {
ns, tag = tag[0:i], tag[i+1:]
}
if tag != start.Name.Local {
return UnmarshalError("expected element type <" + tag + "> but have <" + start.Name.Local + ">")
}
if ns != "" && ns != start.Name.Space {
e := "expected element <" + tag + "> in name space " + ns + " but have "
if start.Name.Space == "" {
e += "no name space"
} else {
e += start.Name.Space
}
return UnmarshalError(e)
}
}
// Save
v := sv.FieldByIndex(f.Index)
if _, ok := v.Interface().(Name); !ok {
return UnmarshalError(sv.Type().String() + " field XMLName does not have type xml.Name")
}
v.(*reflect.StructValue).Set(reflect.NewValue(start.Name).(*reflect.StructValue))
}
// Assign attributes.
// Also, determine whether we need to save character data or comments.
for i, n := 0, typ.NumField(); i < n; i++ {
f := typ.Field(i)
switch f.Tag {
case "attr":
strv, ok := sv.FieldByIndex(f.Index).(*reflect.StringValue)
if !ok {
return UnmarshalError(sv.Type().String() + " field " + f.Name + " has attr tag but is not type string")
}
// Look for attribute.
val := ""
k := strings.ToLower(f.Name)
for _, a := range start.Attr {
if fieldName(a.Name.Local) == k {
val = a.Value
break
}
}
strv.Set(val)
case "comment":
if saveComment == nil {
saveComment = sv.FieldByIndex(f.Index)
}
case "chardata":
if saveData == nil {
saveData = sv.FieldByIndex(f.Index)
}
}
}
}
// Find end element.
// Process sub-elements along the way.
Loop:
for {
tok, err := p.Token()
if err != nil {
return err
}
switch t := tok.(type) {
case StartElement:
// Sub-element.
// Look up by tag name.
// If that fails, fall back to mop-up field named "Any".
if sv != nil {
k := fieldName(t.Name.Local)
any := -1
for i, n := 0, styp.NumField(); i < n; i++ {
f := styp.Field(i)
if strings.ToLower(f.Name) == k {
if err := p.unmarshal(sv.FieldByIndex(f.Index), &t); err != nil {
return err
}
continue Loop
}
if any < 0 && f.Name == "Any" {
any = i
}
}
if any >= 0 {
if err := p.unmarshal(sv.FieldByIndex(styp.Field(any).Index), &t); err != nil {
return err
}
continue Loop
}
}
// Not saving sub-element but still have to skip over it.
if err := p.Skip(); err != nil {
return err
}
case EndElement:
break Loop
case CharData:
if saveData != nil {
data = bytes.Add(data, t)
}
case Comment:
if saveComment != nil {
comment = bytes.Add(comment, t)
}
}
}
var err os.Error
// Helper functions for integer and unsigned integer conversions
var itmp int64
getInt64 := func() bool {
itmp, err = strconv.Atoi64(string(data))
// TODO: should check sizes
return err == nil
}
var utmp uint64
getUint64 := func() bool {
utmp, err = strconv.Atoui64(string(data))
// TODO: check for overflow?
return err == nil
}
var ftmp float64
getFloat64 := func() bool {
ftmp, err = strconv.Atof64(string(data))
// TODO: check for overflow?
return err == nil
}
// Save accumulated data and comments
switch t := saveData.(type) {
case nil:
// Probably a comment, handled below
default:
return os.ErrorString("cannot happen: unknown type " + t.Type().String())
case *reflect.IntValue:
if !getInt64() {
return err
}
t.Set(int(itmp))
case *reflect.Int8Value:
if !getInt64() {
return err
}
t.Set(int8(itmp))
case *reflect.Int16Value:
if !getInt64() {
return err
}
t.Set(int16(itmp))
case *reflect.Int32Value:
if !getInt64() {
return err
}
t.Set(int32(itmp))
case *reflect.Int64Value:
if !getInt64() {
return err
}
t.Set(itmp)
case *reflect.UintValue:
if !getUint64() {
return err
}
t.Set(uint(utmp))
case *reflect.Uint8Value:
if !getUint64() {
return err
}
t.Set(uint8(utmp))
case *reflect.Uint16Value:
if !getUint64() {
return err
}
t.Set(uint16(utmp))
case *reflect.Uint32Value:
if !getUint64() {
return err
}
t.Set(uint32(utmp))
case *reflect.Uint64Value:
if !getUint64() {
return err
}
t.Set(utmp)
case *reflect.UintptrValue:
if !getUint64() {
return err
}
t.Set(uintptr(utmp))
case *reflect.FloatValue:
if !getFloat64() {
return err
}
t.Set(float(ftmp))
case *reflect.Float32Value:
if !getFloat64() {
return err
}
t.Set(float32(ftmp))
case *reflect.Float64Value:
if !getFloat64() {
return err
}
t.Set(ftmp)
case *reflect.StringValue:
t.Set(string(data))
case *reflect.SliceValue:
t.Set(reflect.NewValue(data).(*reflect.SliceValue))
}
switch t := saveComment.(type) {
case *reflect.StringValue:
t.Set(string(comment))
case *reflect.SliceValue:
t.Set(reflect.NewValue(comment).(*reflect.SliceValue))
}
return nil
}
func main() {
pg_adr, err := net.ResolveTCPAddr("152.7.16.113:5432")
if err != nil {
log.Exitf("Error while resolving address: %s", err)
}
conn, err := net.DialTCP("tcp", nil, pg_adr)
if err != nil {
log.Exitf("Error while connecting: %s", err)
}
log.Stdout("I think we connected")
strs := make([]string, 4)
strs[0] = "user"
strs[1] = "alex"
strs[2] = "database"
strs[3] = "ar_test"
str2 := strings.Join(strs, "\x00") + "\x00\x00"
mesg2 := strings.Bytes(str2)
hmesg := make([]byte, 4+4)
binary.BigEndian.PutUint32(hmesg[4:8], uint32(3<<16))
hmesg = bytes.Add(hmesg, mesg2)
binary.BigEndian.PutUint32(hmesg[0:4], uint32(len(hmesg)))
n, err := conn.Write(hmesg)
if err != nil {
log.Exitf("Error writing TCP: %s", err)
}
log.Stdoutf("wrote %d", n)
result := make([]byte, 12)
// the largest response we can get is 12 bytes
if n, err = conn.Read(result); err != nil {
log.Exitf("Error reading TCP (Read %d bytes): %s", n, err)
}
log.Stdoutf("%c", result[0])
switch string(result[0]) {
case psql_constants.Authentication:
log.Stdout("Got authentication message")
default:
log.Exit("Did not get authentication message")
}
mesglen := binary.BigEndian.Uint32(result[1:5])
mesgtype := binary.BigEndian.Uint32(result[5:9])
fmt.Println(mesglen, mesgtype)
passhash := md5.New()
passhash.Write(strings.Bytes("jar1!" + "alex"))
salthash := md5.New()
salthash.Write(passhash.Sum())
salthash.Write(result[9:12])
passresponse := make([]byte, 5)
passresponse[0] = 'p'
binary.BigEndian.PutUint32(passresponse[1:5], uint32(4+salthash.Size()+1))
passresponse = bytes.Add(passresponse, strings.Bytes("md5"))
passresponse = bytes.Add(passresponse, salthash.Sum())
passresponse = bytes.AddByte(passresponse, byte(0))
fmt.Println(passresponse)
n, err = conn.Write(passresponse)
if err != nil {
log.Exitf("Error writing TCP: %s", err)
}
log.Stdoutf("wrote %d", n)
result = make([]byte, 18)
// the largest response we can get is 12 bytes
if n, err = conn.Read(result); err != nil {
log.Exitf("Error reading TCP (Read %d bytes): %s", n, err)
}
fmt.Println(result)
conn.Close()
}
func (c *Client) run(complete chan bool) {
print("client running\n")
print("sending handshake\n")
c.HandShake()
print("waiting for handshake\n")
if !c.WaitHandShake() {
complete <- false
return
}
c.processHandShake(msg)
blank := make([]byte, 9)
msg := make([]byte, 49+pstrlen)
buffer := bytes.NewBuffer(msg)
buffer.WriteByte(pstrlen)
buffer.WriteString(c.torrent.Pstr)
buffer.Write(blank)
buffer.Write(&(c.torrent.info_hash))
buffer.Write(&(c.torrent.peer_id))
_, err = c.conn.Write(buffer.Bytes())
return
for {
print("waiting for msg\n")
_, err := c.conn.Read(c.buffer[0:4]) //read msg length
if err != nil {
complete <- false
return
}
length := binary.BigEndian.Uint32(c.buffer[0:4])
print("recieved msg length" + strconv.Itoa(int(length)) + "\n")
switch {
case length == 0:
print("keepalive msg")
continue
case length >= MaxInMsgSize:
complete <- true
return
}
_, err = c.conn.Read(c.buffer[4 : 4+length])
if err != nil {
complete <- true
return
}
print("msg recieved payload\n")
msg := new(message)
msg.length = length
msg.msgId = c.buffer[4]
bytes.Add(msg.payLoad, c.buffer[5:len(c.buffer)])
err = c.processMsg(msg)
if err != nil {
print(err.String())
complete <- true
return
}
runtime.Gosched()
}
}
func main() {
flag.Parse() // parsovani parametru prikazove radky
rand.Seed(time.Nanoseconds()) // inicializace generatoru nahodnych cisel
if *generateKeys {
SaveKeys(GenerateKeys(*keyLength))
}
// rozdeleni souboru na vice mensich podle delky klice
if *splitFile != "" {
rights := 0600
n, _ := ReadPublicKey()
bytes := readFile(*splitFile)
nl := len(n.Bytes()) - 1
i := 0
for ; i < len(bytes)/nl; i++ {
writeToFile(partfile(i), bytes[i*nl:(i+1)*nl], rights)
}
if len(bytes[i*nl:]) > 0 { // pokud deleni nevychazi presne
writeToFile(partfile(i), bytes[i*nl:], rights)
i++
}
// informacni soubor
writeToFile(*prefix+".info", strings.Bytes(fmt.Sprintf("%d", i)), rights)
}
// zasifruje/rozsifruje vsechny soubory verejnym klicem
if *encrypFiles {
n, e := ReadPublicKey()
max := msgscount()
for i := 0; i < max; i++ {
file := readFile(partfile(i))
bs := crypt(e, n, file)
writeToFile(partfile(i), bs, 0600)
}
}
// rozsifruje/zasifruje vsechny soubory soukromym klicem
if *decrypFiles {
p, q, d := ReadPrivateKey()
pinv := new(big.Int).Mul(p, invMod(p, q)) // = p*(p^-1 mod q)
qinv := new(big.Int).Mul(q, invMod(q, p)) // = q*(q^-1 mod p)
n := new(big.Int).Mul(p, q)
max := msgscount()
for i := 0; i < max; i++ {
file := readFile(partfile(i))
// CINSKA VETA O ZBYTCICH
bp := new(big.Int).SetBytes(crypt(d, p, file)) // decrypt mod p
bq := new(big.Int).SetBytes(crypt(d, q, file)) // decrypt mod q
// bs = bp * qinv + bq * binv (mod n)
bs := new(big.Int).Mul(bp, qinv)
bs.Add(bs, new(big.Int).Mul(bq, pinv))
bs.Mod(bs, n)
writeToFile(partfile(i), bs.Bytes(), 0600)
}
}
// spojeni souboru do jednoho
if *joinFile != "" {
max := msgscount()
var bs []byte
for i := 0; i < max; i++ {
file := readFile(partfile(i))
bs = bytes.Add(bs, file)
}
writeToFile(*joinFile, bs, 0600)
}
}
