Add missing files/dirs

vendor/github.com/eyedeekay/goSam/i2pkeys.go

@@ -0,0 +1,35 @@
+package goSam
+
+import (
+	"errors"
+
+	"github.com/eyedeekay/sam3/i2pkeys"
+)
+
+// NewDestination generates a new I2P destination, creating the underlying
+// public/private keys in the process. The public key can be used to send messages
+// to the destination, while the private key can be used to reply to messages
+func (c *Client) NewDestination(sigType ...string) (i2pkeys.I2PKeys, error) {
+	var (
+		sigtmp string
+		keys   i2pkeys.I2PKeys
+	)
+	if len(sigType) > 0 {
+		sigtmp = sigType[0]
+	}
+	r, err := c.sendCmd(
+		"DEST GENERATE %s\n",
+		sigtmp,
+	)
+	if err != nil {
+		return keys, err
+	}
+	var pub, priv string
+	if priv = r.Pairs["PRIV"]; priv == "" {
+		return keys, errors.New("failed to generate private destination key")
+	}
+	if pub = r.Pairs["PUB"]; pub == "" {
+		return keys, errors.New("failed to generate public destination key")
+	}
+	return i2pkeys.NewKeys(i2pkeys.I2PAddr(pub), priv), nil
+}

vendor/github.com/eyedeekay/sam3/i2pkeys/I2PAddr.go

@@ -0,0 +1,198 @@
+package i2pkeys
+
+import (
+	"bytes"
+	"crypto/sha256"
+	"encoding/base32"
+	"encoding/base64"
+	"errors"
+	"io"
+	"strings"
+)
+
+var (
+	i2pB64enc *base64.Encoding = base64.NewEncoding("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-~")
+	i2pB32enc *base32.Encoding = base32.NewEncoding("abcdefghijklmnopqrstuvwxyz234567")
+)
+
+// The public and private keys associated with an I2P destination. I2P hides the
+// details of exactly what this is, so treat them as blobs, but generally: One
+// pair of DSA keys, one pair of ElGamal keys, and sometimes (almost never) also
+// a certificate. String() returns you the full content of I2PKeys and Addr()
+// returns the public keys.
+type I2PKeys struct {
+	Address I2PAddr // only the public key
+	Both    string  // both public and private keys
+}
+
+// Creates I2PKeys from an I2PAddr and a public/private keypair string (as
+// generated by String().)
+func NewKeys(addr I2PAddr, both string) I2PKeys {
+	return I2PKeys{addr, both}
+}
+
+// load keys from non standard format
+func LoadKeysIncompat(r io.Reader) (k I2PKeys, err error) {
+	var buff bytes.Buffer
+	_, err = io.Copy(&buff, r)
+	if err == nil {
+		parts := strings.Split(buff.String(), "\n")
+		k = I2PKeys{I2PAddr(parts[0]), parts[1]}
+	}
+	return
+}
+
+// store keys in non standard format
+func StoreKeysIncompat(k I2PKeys, w io.Writer) (err error) {
+	_, err = io.WriteString(w, k.Address.Base64()+"\n"+k.Both)
+	return
+}
+
+// Returns the public keys of the I2PKeys.
+func (k I2PKeys) Addr() I2PAddr {
+	return k.Address
+}
+
+// Returns the keys (both public and private), in I2Ps base64 format. Use this
+// when you create sessions.
+func (k I2PKeys) String() string {
+	return k.Both
+}
+
+// I2PAddr represents an I2P destination, almost equivalent to an IP address.
+// This is the humongously huge base64 representation of such an address, which
+// really is just a pair of public keys and also maybe a certificate. (I2P hides
+// the details of exactly what it is. Read the I2P specifications for more info.)
+type I2PAddr string
+
+// an i2p destination hash, the .b32.i2p address if you will
+type I2PDestHash [32]byte
+
+// create a desthash from a string b32.i2p address
+func DestHashFromString(str string) (dhash I2PDestHash, err error) {
+	if strings.HasSuffix(str, ".b32.i2p") && len(str) == 60 {
+		// valid
+		_, err = i2pB32enc.Decode(dhash[:], []byte(str[:52]+"===="))
+	} else {
+		// invalid
+		err = errors.New("invalid desthash format")
+	}
+	return
+}
+
+// get string representation of i2p dest hash(base32 version)
+func (h I2PDestHash) String() string {
+	b32addr := make([]byte, 56)
+	i2pB32enc.Encode(b32addr, h[:])
+	return string(b32addr[:52]) + ".b32.i2p"
+}
+
+// get base64 representation of i2p dest sha256 hash(the 44-character one)
+func (h I2PDestHash) Hash() string {
+	hash := sha256.New()
+	hash.Write(h[:])
+	digest := hash.Sum(nil)
+	buf := make([]byte, 44)
+	i2pB64enc.Encode(buf, digest)
+	return string(buf)
+}
+
+// Returns "I2P"
+func (h *I2PDestHash) Network() string {
+	return "I2P"
+}
+
+// Returns the base64 representation of the I2PAddr
+func (a I2PAddr) Base64() string {
+	return string(a)
+}
+
+// Returns the I2P destination (base64-encoded)
+func (a I2PAddr) String() string {
+	return string(a)
+}
+
+// Returns "I2P"
+func (a I2PAddr) Network() string {
+	return "I2P"
+}
+
+// Creates a new I2P address from a base64-encoded string. Checks if the address
+// addr is in correct format. (If you know for sure it is, use I2PAddr(addr).)
+func NewI2PAddrFromString(addr string) (I2PAddr, error) {
+	if strings.HasSuffix(addr, ".i2p") {
+		if strings.HasSuffix(addr, ".b32.i2p") {
+			return I2PAddr(""), errors.New("cannot convert .b32.i2p to full destination")
+		}
+		// strip off .i2p if it's there
+		addr = addr[:len(addr)-4]
+	}
+	addr = strings.Trim(addr, "\t\n\r\f ")
+	// very basic check
+	if len(addr) > 4096 || len(addr) < 516 {
+		return I2PAddr(""), errors.New("Not an I2P address")
+	}
+	buf := make([]byte, i2pB64enc.DecodedLen(len(addr)))
+	if _, err := i2pB64enc.Decode(buf, []byte(addr)); err != nil {
+		return I2PAddr(""), errors.New("Address is not base64-encoded")
+	}
+	return I2PAddr(addr), nil
+}
+
+func FiveHundredAs() I2PAddr {
+	s := ""
+	for x := 0; x < 517; x++ {
+		s += "A"
+	}
+	r, _ := NewI2PAddrFromString(s)
+	return r
+}
+
+// Creates a new I2P address from a byte array. The inverse of ToBytes().
+func NewI2PAddrFromBytes(addr []byte) (I2PAddr, error) {
+	if len(addr) > 4096 || len(addr) < 384 {
+		return I2PAddr(""), errors.New("Not an I2P address")
+	}
+	buf := make([]byte, i2pB64enc.EncodedLen(len(addr)))
+	i2pB64enc.Encode(buf, addr)
+	return I2PAddr(string(buf)), nil
+}
+
+// Turns an I2P address to a byte array. The inverse of NewI2PAddrFromBytes().
+func (addr I2PAddr) ToBytes() ([]byte, error) {
+	buf := make([]byte, i2pB64enc.DecodedLen(len(addr)))
+	if _, err := i2pB64enc.Decode(buf, []byte(addr)); err != nil {
+		return buf, errors.New("Address is not base64-encoded")
+	}
+	return buf, nil
+}
+
+func (addr I2PAddr) Bytes() []byte {
+	b, _ := addr.ToBytes()
+	return b
+}
+
+// Returns the *.b32.i2p address of the I2P address. It is supposed to be a
+// somewhat human-manageable 64 character long pseudo-domain name equivalent of
+// the 516+ characters long default base64-address (the I2PAddr format). It is
+// not possible to turn the base32-address back into a usable I2PAddr without
+// performing a Lookup(). Lookup only works if you are using the I2PAddr from
+// which the b32 address was generated.
+func (addr I2PAddr) Base32() (str string) {
+	return addr.DestHash().String()
+}
+
+func (addr I2PAddr) DestHash() (h I2PDestHash) {
+	hash := sha256.New()
+	b, _ := addr.ToBytes()
+	hash.Write(b)
+	digest := hash.Sum(nil)
+	copy(h[:], digest)
+	return
+}
+
+// Makes any string into a *.b32.i2p human-readable I2P address. This makes no
+// sense, unless "anything" is an I2P destination of some sort.
+func Base32(anything string) string {
+	return I2PAddr(anything).Base32()
+}