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This commit is contained in:
Miek Gieben 2011-11-02 23:06:54 +01:00
parent f00b7ec494
commit 22a467e718
14 changed files with 6209 additions and 6234 deletions
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7
_examples/q/fp.go
View File

@ -4,7 +4,6 @@ package main
import (
"dns"
"fmt"
"os"
"strconv"
"strings"
)
@ -64,7 +63,7 @@ func sendProbe(c *dns.Client, addr string, f *fingerprint, q dns.Question) *fing
// This leads to strings like: "QUERY,NOERROR,qr,aa,tc,RD,ad,cd,z,1,0,0,1,DO,4096,NSID"
type fingerprint struct {
Error os.Error
Error error
Opcode int
Rcode int
Response bool
@ -187,10 +186,10 @@ func (f *fingerprint) error() string {
if f.Error == nil {
panic("error is nil")
}
return f.Error.String()
return f.Error.Error()
}
func errorToFingerprint(e os.Error) *fingerprint {
func errorToFingerprint(e error) *fingerprint {
f := new(fingerprint)
f.Error = e
return f

29
client.go
View File

@ -8,7 +8,6 @@ package dns
// when the query returns.
import (
"os"
"io"
"net"
)
@ -22,10 +21,10 @@ type QueryHandler interface {
// construct a DNS request.
type RequestWriter interface {
Write(*Msg)
Send(*Msg) os.Error
Receive() (*Msg, os.Error)
Close() os.Error
Dial() os.Error
Send(*Msg) error
Receive() (*Msg, error)
Close() error
Dial() error
}
// hijacked connections...?
@ -152,7 +151,7 @@ type Query struct {
Handler QueryHandler // handler to invoke, dns.DefaultQueryMux if nil
}
func (q *Query) Query() os.Error {
func (q *Query) Query() error {
handler := q.Handler
if handler == nil {
handler = DefaultQueryMux
@ -171,7 +170,7 @@ func (q *Query) Query() os.Error {
return nil
}
func (q *Query) ListenAndQuery() os.Error {
func (q *Query) ListenAndQuery() error {
if q.QueryChan == nil {
q.QueryChan = DefaultQueryChan
}
@ -200,7 +199,7 @@ func (c *Client) Do(m *Msg, a string) {
// ExchangeBuffer performs a synchronous query. It sends the buffer m to the
// address (net.Addr?) contained in a
func (c *Client) ExchangeBuffer(inbuf []byte, a string, outbuf []byte) (n int, err os.Error) {
func (c *Client) ExchangeBuffer(inbuf []byte, a string, outbuf []byte) (n int, err error) {
w := new(reply)
w.client = c
w.addr = a
@ -224,7 +223,7 @@ func (c *Client) ExchangeBuffer(inbuf []byte, a string, outbuf []byte) (n int, e
// Exchange performs an synchronous query. It sends the message m to the address
// contained in a and waits for an reply.
func (c *Client) Exchange(m *Msg, a string) (r *Msg, err os.Error) {
func (c *Client) Exchange(m *Msg, a string) (r *Msg, err error) {
var n int
out, ok := m.Pack()
if !ok {
@ -248,7 +247,7 @@ func (c *Client) Exchange(m *Msg, a string) (r *Msg, err os.Error) {
}
// Dial connects to the address addr for the network set in c.Net
func (w *reply) Dial() os.Error {
func (w *reply) Dial() error {
conn, err := net.Dial(w.Client().Net, w.addr)
if err != nil {
return err
@ -258,7 +257,7 @@ func (w *reply) Dial() os.Error {
}
// UDP/TCP stuff big TODO
func (w *reply) Close() (err os.Error) {
func (w *reply) Close() (err error) {
return w.conn.Close()
}
@ -270,7 +269,7 @@ func (w *reply) Request() *Msg {
return w.req
}
func (w *reply) Receive() (*Msg, os.Error) {
func (w *reply) Receive() (*Msg, error) {
var p []byte
m := new(Msg)
switch w.Client().Net {
@ -304,7 +303,7 @@ func (w *reply) Receive() (*Msg, os.Error) {
return m, nil
}
func (w *reply) readClient(p []byte) (n int, err os.Error) {
func (w *reply) readClient(p []byte) (n int, err error) {
if w.conn == nil {
return 0, ErrConnEmpty
//panic("no connection")
@ -350,7 +349,7 @@ func (w *reply) readClient(p []byte) (n int, err os.Error) {
// Send sends a dns msg to the address specified in w.
// If the message m contains a TSIG record the transaction
// signature is calculated.
func (w *reply) Send(m *Msg) os.Error {
func (w *reply) Send(m *Msg) error {
if m.IsTsig() {
secret := m.Extra[len(m.Extra)-1].(*RR_TSIG).Hdr.Name
_, ok := w.Client().TsigSecret[secret]
@ -373,7 +372,7 @@ func (w *reply) Send(m *Msg) os.Error {
return nil
}
func (w *reply) writeClient(p []byte) (n int, err os.Error) {
func (w *reply) writeClient(p []byte) (n int, err error) {
if w.Client().Attempts == 0 {
panic("c.Attempts 0")
}

2
clientconfig.go
View File

@ -28,7 +28,7 @@ type ClientConfig struct {
// See resolv.conf(5) on a Linux machine.
// Parse a /etc/resolv.conf like file and return a filled out ClientConfig. Note
// that all nameservers will have the default port number appended (:53)
func ClientConfigFromFile(conf string) (*ClientConfig, os.Error) {
func ClientConfigFromFile(conf string) (*ClientConfig, error) {
file, err := os.Open(conf)
defer file.Close()
if err != nil {

9
dns.go
View File

@ -52,7 +52,6 @@ package dns
import (
"net"
"os"
"strconv"
)
@ -65,17 +64,17 @@ const (
// Error represents a DNS error
type Error struct {
Error string
Err string
Name string
Server net.Addr
Timeout bool
}
func (e *Error) String() string {
func (e *Error) Error() string {
if e == nil {
return "<nil>"
}
return e.Error
return e.Err
}
type RR interface {
@ -155,7 +154,7 @@ func (s RRset) Ok() bool {
type Exchange struct {
Request *Msg // The question sent.
Reply *Msg // The answer to the question that was sent.
Error os.Error // If something when wrong, this contains the error.
Error error // If something when wrong, this contains the error.
}
// DNS resource records.

5
dnssec.go
View File

@ -18,7 +18,6 @@ import (
"big"
"sort"
"strings"
"os"
)
// DNSSEC encryption algorithm codes.
@ -172,7 +171,7 @@ func (k *RR_DNSKEY) ToDS(h int) *RR_DS {
// otherwise false.
// The signature data in the RRSIG is filled by this method.
// There is no check if RRSet is a proper (RFC 2181) RRSet.
func (s *RR_RRSIG) Sign(k PrivateKey, rrset RRset) os.Error {
func (s *RR_RRSIG) Sign(k PrivateKey, rrset RRset) error {
if k == nil {
return ErrPrivKey
}
@ -263,7 +262,7 @@ func (s *RR_RRSIG) Sign(k PrivateKey, rrset RRset) os.Error {
// Verify validates an RRSet with the signature and key. This is only the
// cryptographic test, the signature validity period most be checked separately.
func (s *RR_RRSIG) Verify(k *RR_DNSKEY, rrset RRset) os.Error {
func (s *RR_RRSIG) Verify(k *RR_DNSKEY, rrset RRset) error {
// Frist the easy checks
if s.KeyTag != k.KeyTag() {
return ErrKey

11
keygen.go
View File

@ -1,7 +1,6 @@
package dns
import (
"os"
"io"
"big"
"strconv"
@ -21,7 +20,7 @@ type PrivateKey interface{}
// what kind of DNSKEY will be generated.
// The ECDSA algorithms imply a fixed keysize, in that case
// bits should be set to the size of the algorithm.
func (r *RR_DNSKEY) Generate(bits int) (PrivateKey, os.Error) {
func (r *RR_DNSKEY) Generate(bits int) (PrivateKey, error) {
switch r.Algorithm {
case RSAMD5, RSASHA1, RSASHA256, RSASHA1NSEC3SHA1:
if bits < 512 || bits > 4096 {
@ -113,7 +112,7 @@ func (r *RR_DNSKEY) PrivateKeyString(p PrivateKey) (s string) {
}
// Read reads a DNSKEY from the io.Reader q.
func (k *RR_DNSKEY) Read(q io.Reader) os.Error {
func (k *RR_DNSKEY) Read(q io.Reader) error {
p := NewParser(q)
r, err := p.First()
if err != nil {
@ -131,7 +130,7 @@ func (k *RR_DNSKEY) Read(q io.Reader) os.Error {
}
// ReadPrivateKey reads a private key from the io.Reader q.
func (k *RR_DNSKEY) ReadPrivateKey(q io.Reader) (PrivateKey, os.Error) {
func (k *RR_DNSKEY) ReadPrivateKey(q io.Reader) (PrivateKey, error) {
p := NewParser(q)
kv, _ := p.PrivateKey()
if kv == nil {
@ -153,7 +152,7 @@ func (k *RR_DNSKEY) ReadPrivateKey(q io.Reader) (PrivateKey, os.Error) {
}
// Read a private key (file) string and create a public key. Return the private key.
func (k *RR_DNSKEY) readPrivateKeyRSA(kv map[string]string) (PrivateKey, os.Error) {
func (k *RR_DNSKEY) readPrivateKeyRSA(kv map[string]string) (PrivateKey, error) {
p := new(rsa.PrivateKey)
p.Primes = []*big.Int{nil, nil}
for k, v := range kv {
@ -190,7 +189,7 @@ func (k *RR_DNSKEY) readPrivateKeyRSA(kv map[string]string) (PrivateKey, os.Erro
return p, nil
}
func (k *RR_DNSKEY) readPrivateKeyECDSA(kv map[string]string) (PrivateKey, os.Error) {
func (k *RR_DNSKEY) readPrivateKeyECDSA(kv map[string]string) (PrivateKey, error) {
p := new(ecdsa.PrivateKey)
p.D = big.NewInt(0)
// Need to check if we have everything

10
kparse.go
View File

@ -3,11 +3,7 @@ package dns
// Parse private key files
import (
"os"
// "strings"
)
// line 14 "kparse.go"
var k_start int = 111
@ -16,16 +12,14 @@ var k_error int = 0
var k_en_main int = 111
// line 13 "kparse.rl"
// PrivateKey parses a private key file as defined in XXX.
// A map[string]string is returned with the values. All the keys are
// converted to lowercase. All values are returned as-is, except
// the algorithm [e.g. 5 (RSASHA1)] is returned as: m[algorithm] = "RSASHA1"
func (kp *Parser) PrivateKey() (m map[string]string, err os.Error) {
//off Ragel generate illegal code now
func (kp *Parser) PrivateKey() (m map[string]string, err error) {
//off Ragel generate illegal code now
/*
m = make(map[string]string)
var (

55
msg.go
View File

@ -15,7 +15,6 @@
package dns
import (
"os"
"reflect"
"net"
"rand"
@ -27,31 +26,31 @@ import (
)
var (
ErrUnpack os.Error = &Error{Error: "unpacking failed"}
ErrPack os.Error = &Error{Error: "packing failed"}
ErrId os.Error = &Error{Error: "id mismatch"}
ErrShortRead os.Error = &Error{Error: "short read"}
ErrConn os.Error = &Error{Error: "conn holds both UDP and TCP connection"}
ErrConnEmpty os.Error = &Error{Error: "conn has no connection"}
ErrServ os.Error = &Error{Error: "no servers could be reached"}
ErrKey os.Error = &Error{Error: "bad key"}
ErrPrivKey os.Error = &Error{Error: "bad private key"}
ErrKeySize os.Error = &Error{Error: "bad key size"}
ErrKeyAlg os.Error = &Error{Error: "bad key algorithm"}
ErrAlg os.Error = &Error{Error: "bad algorithm"}
ErrTime os.Error = &Error{Error: "bad time"}
ErrNoSig os.Error = &Error{Error: "no signature found"}
ErrSig os.Error = &Error{Error: "bad signature"}
ErrSecret os.Error = &Error{Error: "no secret defined"}
ErrSigGen os.Error = &Error{Error: "bad signature generation"}
ErrAuth os.Error = &Error{Error: "bad authentication"}
ErrXfrSoa os.Error = &Error{Error: "no SOA seen"}
ErrXfrLast os.Error = &Error{Error: "last SOA"}
ErrXfrType os.Error = &Error{Error: "no ixfr, nor axfr"}
ErrHandle os.Error = &Error{Error: "handle is nil"}
ErrChan os.Error = &Error{Error: "channel is nil"}
ErrName os.Error = &Error{Error: "type not found for name"}
ErrRRset os.Error = &Error{Error: "invalid rrset"}
ErrUnpack error = &Error{Err: "unpacking failed"}
ErrPack error = &Error{Err: "packing failed"}
ErrId error = &Error{Err: "id mismatch"}
ErrShortRead error = &Error{Err: "short read"}
ErrConn error = &Error{Err: "conn holds both UDP and TCP connection"}
ErrConnEmpty error = &Error{Err: "conn has no connection"}
ErrServ error = &Error{Err: "no servers could be reached"}
ErrKey error = &Error{Err: "bad key"}
ErrPrivKey error = &Error{Err: "bad private key"}
ErrKeySize error = &Error{Err: "bad key size"}
ErrKeyAlg error = &Error{Err: "bad key algorithm"}
ErrAlg error = &Error{Err: "bad algorithm"}
ErrTime error = &Error{Err: "bad time"}
ErrNoSig error = &Error{Err: "no signature found"}
ErrSig error = &Error{Err: "bad signature"}
ErrSecret error = &Error{Err: "no secret defined"}
ErrSigGen error = &Error{Err: "bad signature generation"}
ErrAuth error = &Error{Err: "bad authentication"}
ErrXfrSoa error = &Error{Err: "no SOA seen"}
ErrXfrLast error = &Error{Err: "last SOA"}
ErrXfrType error = &Error{Err: "no ixfr, nor axfr"}
ErrHandle error = &Error{Err: "handle is nil"}
ErrChan error = &Error{Err: "channel is nil"}
ErrName error = &Error{Err: "type not found for name"}
ErrRRset error = &Error{Err: "invalid rrset"}
)
// A manually-unpacked version of (id, bits).
@ -793,7 +792,7 @@ func packUint16(i uint16) (byte, byte) {
return byte(i >> 8), byte(i)
}
func packBase64(s []byte) ([]byte, os.Error) {
func packBase64(s []byte) ([]byte, error) {
b64len := base64.StdEncoding.DecodedLen(len(s))
buf := make([]byte, b64len)
n, err := base64.StdEncoding.Decode(buf, []byte(s))
@ -805,7 +804,7 @@ func packBase64(s []byte) ([]byte, os.Error) {
}
// Helper function for packing, mostly used in dnssec.go
func packBase32(s []byte) ([]byte, os.Error) {
func packBase32(s []byte) ([]byte, error) {
b32len := base32.HexEncoding.DecodedLen(len(s))
buf := make([]byte, b32len)
n, err := base32.HexEncoding.Decode(buf, []byte(s))

5
nsec3.go
View File

@ -5,7 +5,6 @@ import (
"hash"
"strings"
"crypto/sha1"
"os"
)
type saltWireFmt struct {
@ -63,13 +62,13 @@ func (nsec3 *RR_NSEC3) HashNames() {
// the message m.
// NsecVerify returns nil when the NSECs in the message contain
// the correct proof. This function does not validates the NSECs
func (m *Msg) NsecVerify(q Question) os.Error {
func (m *Msg) NsecVerify(q Question) error {
return nil
}
// Nsec3Verify verifies ...
func (m *Msg) Nsec3Verify(q Question) os.Error {
func (m *Msg) Nsec3Verify(q Question) error {
return nil
}

19
server.go
View File

@ -8,7 +8,6 @@ package dns
import (
"io"
"os"
"net"
)
@ -26,7 +25,7 @@ type ResponseWriter interface {
// RemoteAddr returns the net.Addr of the client that sent the current request.
RemoteAddr() net.Addr
// Write a reply back to the client.
Write([]byte) (int, os.Error)
Write([]byte) (int, error)
}
// port?
@ -82,7 +81,7 @@ func Refused(w ResponseWriter, r *Msg) {
func RefusedHandler() Handler { return HandlerFunc(Refused) }
// ...
func ListenAndServe(addr string, network string, handler Handler) os.Error {
func ListenAndServe(addr string, network string, handler Handler) error {
server := &Server{Addr: addr, Net: network, Handler: handler}
return server.ListenAndServe()
}
@ -148,7 +147,7 @@ type Server struct {
}
// ...
func (srv *Server) ListenAndServe() os.Error {
func (srv *Server) ListenAndServe() error {
addr := srv.Addr
if addr == "" {
addr = ":domain"
@ -178,7 +177,7 @@ func (srv *Server) ListenAndServe() os.Error {
return nil // os.Error with wrong network
}
func (srv *Server) ServeTCP(l *net.TCPListener) os.Error {
func (srv *Server) ServeTCP(l *net.TCPListener) error {
defer l.Close()
handler := srv.Handler
if handler == nil {
@ -228,7 +227,7 @@ forever:
panic("not reached")
}
func (srv *Server) ServeUDP(l *net.UDPConn) os.Error {
func (srv *Server) ServeUDP(l *net.UDPConn) error {
defer l.Close()
handler := srv.Handler
if handler == nil {
@ -257,7 +256,7 @@ func (srv *Server) ServeUDP(l *net.UDPConn) os.Error {
panic("not reached")
}
func newConn(t *net.TCPConn, u *net.UDPConn, a net.Addr, buf []byte, handler Handler) (*conn, os.Error) {
func newConn(t *net.TCPConn, u *net.UDPConn, a net.Addr, buf []byte, handler Handler) (*conn, error) {
c := new(conn)
c.handler = handler
c._TCP = t
@ -267,7 +266,6 @@ func newConn(t *net.TCPConn, u *net.UDPConn, a net.Addr, buf []byte, handler Han
return c, nil
}
// Close the connection.
func (c *conn) close() {
switch {
@ -307,13 +305,12 @@ func (c *conn) serve() {
}
}
func (w *response) Write(data []byte) (n int, err os.Error) {
func (w *response) Write(data []byte) (n int, err error) {
switch {
case w.conn._UDP != nil:
n, err = w.conn._UDP.WriteTo(data, w.conn.remoteAddr)
if err != nil {
println(err.String())
println(err.Error())
return 0, err
}
case w.conn._TCP != nil:

9
tsig.go
View File

@ -34,7 +34,6 @@ package dns
import (
"io"
"os"
"time"
"strings"
"crypto/hmac"
@ -82,7 +81,7 @@ type timerWireFmt struct {
// in the Tsig RR that is added. When TsigGenerate is called for the
// first time requestMAC is set to the empty string.
// If something goes wrong an error is returned, otherwise it is nil.
func TsigGenerate(m *Msg, secret, requestMAC string, timersOnly bool) os.Error {
func TsigGenerate(m *Msg, secret, requestMAC string, timersOnly bool) error {
if !m.IsTsig() {
// panic? panic?
panic("TSIG not last RR in additional")
@ -119,7 +118,7 @@ func TsigGenerate(m *Msg, secret, requestMAC string, timersOnly bool) os.Error {
// TsigVerify verifies the TSIG on a message.
// If the signature does not validate err contains the
// error, otherwise it is nil.
func TsigVerify(msg []byte, secret, requestMAC string, timersOnly bool) os.Error {
func TsigVerify(msg []byte, secret, requestMAC string, timersOnly bool) error {
rawsecret, err := packBase64([]byte(secret))
if err != nil {
return err
@ -139,7 +138,7 @@ func TsigVerify(msg []byte, secret, requestMAC string, timersOnly bool) os.Error
h := hmac.NewMD5([]byte(rawsecret))
io.WriteString(h, string(buf))
if (strings.ToUpper(hex.EncodeToString(h.Sum())) != strings.ToUpper(tsig.MAC)) {
if strings.ToUpper(hex.EncodeToString(h.Sum())) != strings.ToUpper(tsig.MAC) {
return ErrSig
}
return nil
@ -198,7 +197,7 @@ func tsigBuffer(msgbuf []byte, rr *RR_TSIG, requestMAC string, timersOnly bool)
}
// Strip the TSIG from the raw message
func stripTsig(msg []byte) ([]byte, *RR_TSIG, os.Error) {
func stripTsig(msg []byte) ([]byte, *RR_TSIG, error) {
// Copied from msg.go's Unpack()
// Header.
var dh Header

3
types.go
View File

@ -6,7 +6,6 @@
package dns
import (
"os"
"net"
"time"
"strconv"
@ -148,7 +147,7 @@ func (q *Question) String() string {
}
// NewRRString returns the last RR contained in s.
func NewRRString(s string) (RR, os.Error) {
func NewRRString(s string) (RR, error) {
p := NewParser(strings.NewReader(s))
return p.First()
}

10
xfr.go
View File

@ -1,15 +1,11 @@
package dns
import (
"os"
)
// XfrReceives requests an incoming Ixfr or Axfr. If the message q's question
// section contains an AXFR type an Axfr is performed, if it is IXFR it does an Ixfr.
// Each message will be send along the Client's reply channel as it is received.
// The last message send has Exchange.Error set to ErrXfrLast
// to signal there is nothing more to come.
func (c *Client) XfrReceive(q *Msg, a string) os.Error {
func (c *Client) XfrReceive(q *Msg, a string) error {
w := new(reply)
w.client = c
w.addr = a
@ -117,10 +113,10 @@ func (w *reply) ixfrReceive() {
// XfrSend performs an outgoing Ixfr or Axfr. The function is xfr agnostic, it is
// up to the caller to correctly send the sequence of messages.
func XfrSend(w ResponseWriter, q *Msg, a string) os.Error {
func XfrSend(w ResponseWriter, q *Msg, a string) error {
switch q.Question[0].Qtype {
case TypeAXFR, TypeIXFR:
// go d.xfrWrite(q, m, e)
// go d.xfrWrite(q, m, e)
default:
return ErrXfrType
}

17
zparse.go
View File

@ -5,9 +5,8 @@ package dns
// With the thankful help of gdnsd and the Go examples for Ragel.
import (
"os"
"io"
// "net"
// "net"
"time"
"strings"
"strconv"
@ -23,18 +22,18 @@ type Parser struct {
}
type ParseError struct {
Error string
Err string
name string
line int
}
func (e *ParseError) String() string {
s := e.Error + ": \"" + e.name + "\" at line: " + strconv.Itoa(e.line)
func (e *ParseError) Error() string {
s := e.Err + ": \"" + e.name + "\" at line: " + strconv.Itoa(e.line)
return s
}
// First will return the first RR found when parsing.
func (zp *Parser) First() (RR, os.Error) {
func (zp *Parser) First() (RR, error) {
// defer close something
return nil, nil
}
@ -59,7 +58,7 @@ func NewParser(r io.Reader) *Parser {
// Translate the RRSIG's incep. and expir. times from
// string values ("20110403154150") to an integer.
// Taking into account serial arithmetic (RFC 1982)
func dateToTime(s string) (uint32, os.Error) {
func dateToTime(s string) (uint32, error) {
t, e := time.Parse("20060102150405", s)
if e != nil {
return 0, e
@ -86,7 +85,6 @@ func fields(s string, i int) (rdf []string) {
return
}
// line 86 "zparse.go"
var z_start int = 141
var z_first_final int = 141
@ -94,11 +92,10 @@ var z_error int = 0
var z_en_main int = 141
// line 85 "zparse.rl"
// Zone parses an DNS master zone file.
func (zp *Parser) Zone() (err os.Error) {
func (zp *Parser) Zone() (err error) {
/*
z = NewZone()
data := string(zp.buf)