64 lines
1.6 KiB
Go
64 lines
1.6 KiB
Go
package tor
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import (
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"encoding/base32"
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"net"
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"strconv"
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)
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const (
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// base32Alphabet is the alphabet used for encoding and decoding v2 and
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// v3 onion addresses.
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base32Alphabet = "abcdefghijklmnopqrstuvwxyz234567"
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// OnionSuffix is the ".onion" suffix for v2 and v3 onion addresses.
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OnionSuffix = ".onion"
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// OnionSuffixLen is the length of the ".onion" suffix.
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OnionSuffixLen = len(OnionSuffix)
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// V2DecodedLen is the length of a decoded v2 onion service.
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V2DecodedLen = 10
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// V2Len is the length of a v2 onion service including the ".onion"
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// suffix.
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V2Len = 22
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// V3DecodedLen is the length of a decoded v3 onion service.
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V3DecodedLen = 35
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// V3Len is the length of a v3 onion service including the ".onion"
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// suffix.
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V3Len = 62
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)
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var (
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// Base32Encoding represents the Tor's base32-encoding scheme for v2 and
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// v3 onion addresses.
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Base32Encoding = base32.NewEncoding(base32Alphabet)
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)
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// OnionAddr represents a Tor network end point onion address.
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type OnionAddr struct {
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// OnionService is the host of the onion address.
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OnionService string
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// Port is the port of the onion address.
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Port int
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}
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// A compile-time check to ensure that OnionAddr implements the net.Addr
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// interface.
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var _ net.Addr = (*OnionAddr)(nil)
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// String returns the string representation of an onion address.
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func (o *OnionAddr) String() string {
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return net.JoinHostPort(o.OnionService, strconv.Itoa(o.Port))
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}
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// Network returns the network that this implementation of net.Addr will use.
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// In this case, because Tor only allows TCP connections, the network is "tcp".
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func (o *OnionAddr) Network() string {
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return "tcp"
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}
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