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103 lines
3.1 KiB
Go
103 lines
3.1 KiB
Go
/*
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* Copyright (c) 2014, Yawning Angel <yawning at schwanenlied dot me>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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// Package transports provides a interface to query supported pluggable
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// transports.
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package transports // import "gitlab.com/yawning/obfs4.git/transports"
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import (
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"fmt"
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"sync"
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"gitlab.com/yawning/obfs4.git/transports/base"
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"gitlab.com/yawning/obfs4.git/transports/meeklite"
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"gitlab.com/yawning/obfs4.git/transports/obfs2"
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"gitlab.com/yawning/obfs4.git/transports/obfs3"
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"gitlab.com/yawning/obfs4.git/transports/obfs4"
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"gitlab.com/yawning/obfs4.git/transports/scramblesuit"
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)
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var (
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transportMapLock sync.Mutex
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transportMap map[string]base.Transport = make(map[string]base.Transport)
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)
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// Register registers a transport protocol.
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func Register(transport base.Transport) error {
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transportMapLock.Lock()
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defer transportMapLock.Unlock()
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name := transport.Name()
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_, registered := transportMap[name]
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if registered {
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return fmt.Errorf("transport '%s' already registered", name)
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}
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transportMap[name] = transport
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return nil
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}
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// Transports returns the list of registered transport protocols.
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func Transports() []string {
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transportMapLock.Lock()
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defer transportMapLock.Unlock()
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ret := make([]string, 0, len(transportMap))
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for name := range transportMap {
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ret = append(ret, name)
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}
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return ret
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}
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// Get returns a transport protocol implementation by name.
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func Get(name string) base.Transport {
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transportMapLock.Lock()
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defer transportMapLock.Unlock()
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t := transportMap[name]
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return t
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}
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// Init initializes all of the integrated transports.
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func Init() error {
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for _, v := range []base.Transport{
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new(meeklite.Transport),
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new(obfs2.Transport),
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new(obfs3.Transport),
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new(obfs4.Transport),
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new(scramblesuit.Transport),
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} {
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if err := Register(v); err != nil {
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return err
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}
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}
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return nil
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}
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