proxy dialer
This commit is contained in:
Vladislav Yarmak
parent
daac1baa9a
commit
6db083d2a6
5
go.mod
5
go.mod
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@ -3,7 +3,8 @@ module github.com/Snawoot/dumbproxy
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go 1.13
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require (
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github.com/tg123/go-htpasswd v1.2.0 // indirect
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github.com/magisterquis/connectproxy v0.0.0-20200725203833-3582e84f0c9b // indirect
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github.com/tg123/go-htpasswd v1.2.0
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golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90
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golang.org/x/net v0.0.0-20220826154423-83b083e8dc8b // indirect
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golang.org/x/net v0.5.0 // indirect
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)
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37
go.sum
37
go.sum
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@ -1,29 +1,54 @@
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github.com/GehirnInc/crypt v0.0.0-20200316065508-bb7000b8a962 h1:KeNholpO2xKjgaaSyd+DyQRrsQjhbSeS7qe4nEw8aQw=
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github.com/GehirnInc/crypt v0.0.0-20200316065508-bb7000b8a962/go.mod h1:kC29dT1vFpj7py2OvG1khBdQpo3kInWP+6QipLbdngo=
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github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/magisterquis/connectproxy v0.0.0-20200725203833-3582e84f0c9b h1:xZ59n7Frzh8CwyfAapUZLSg+gXH5m63YEaFCMpDHhpI=
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github.com/magisterquis/connectproxy v0.0.0-20200725203833-3582e84f0c9b/go.mod h1:uDd4sYVYsqcxAB8j+Q7uhL6IJCs/r1kxib1HV4bgOMg=
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github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
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github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
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github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
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github.com/tg123/go-htpasswd v1.2.0 h1:UKp34m9H467/xklxUxU15wKRru7fwXoTojtxg25ITF0=
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github.com/tg123/go-htpasswd v1.2.0/go.mod h1:h7IzlfpvIWnVJhNZ0nQ9HaFxHb7pn5uFJYLlEUJa2sM=
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github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
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golang.org/x/crypto v0.0.0-20190228161510-8dd112bcdc25/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
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golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90 h1:Y/gsMcFOcR+6S6f3YeMKl5g+dZMEWqcz5Czj/GWYbkM=
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golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
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golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
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golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
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golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
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golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
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golang.org/x/net v0.0.0-20220826154423-83b083e8dc8b h1:ZmngSVLe/wycRns9MKikG9OWIEjGcGAkacif7oYQaUY=
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golang.org/x/net v0.0.0-20220826154423-83b083e8dc8b/go.mod h1:YDH+HFinaLZZlnHAfSS6ZXJJ9M9t4Dl22yv3iI2vPwk=
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golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
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golang.org/x/net v0.5.0 h1:GyT4nK/YDHSqa1c4753ouYCDajOYKTja9Xb/OHtgvSw=
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golang.org/x/net v0.5.0/go.mod h1:DivGGAXEgPSlEBzxGzZI+ZLohi+xUj054jfeKui00ws=
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golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
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golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
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golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10 h1:WIoqL4EROvwiPdUtaip4VcDdpZ4kha7wBWZrbVKCIZg=
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golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/sys v0.4.0 h1:Zr2JFtRQNX3BCZ8YtxRE9hNJYC8J6I1MVbMg6owUp18=
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golang.org/x/sys v0.4.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
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golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 h1:JGgROgKl9N8DuW20oFS5gxc+lE67/N3FcwmBPMe7ArY=
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golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
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golang.org/x/term v0.4.0 h1:O7UWfv5+A2qiuulQk30kVinPoMtoIPeVaKLEgLpVkvg=
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golang.org/x/term v0.4.0/go.mod h1:9P2UbLfCdcvo3p/nzKvsmas4TnlujnuoV9hGgYzW1lQ=
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golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
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golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
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golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
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golang.org/x/text v0.6.0 h1:3XmdazWV+ubf7QgHSTWeykHOci5oeekaGJBLkrkaw4k=
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golang.org/x/text v0.6.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
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golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
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golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
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golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
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golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
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gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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19
main.go
19
main.go
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@ -70,6 +70,7 @@ type CLIArgs struct {
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passwd string
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passwdCost int
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positionalArgs []string
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proxy []string
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}
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func parse_args() CLIArgs {
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@ -95,6 +96,10 @@ func parse_args() CLIArgs {
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flag.StringVar(&args.passwd, "passwd", "", "update given htpasswd file and add/set password for username. "+
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"Username and password can be passed as positional arguments or requested interactively")
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flag.IntVar(&args.passwdCost, "passwd-cost", bcrypt.MinCost, "bcrypt password cost (for -passwd mode)")
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flag.Func("proxy", "upstream proxy URL. Can be repeated multiple times to chain proxies", func(p string) error {
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args.proxy = append(args.proxy, p)
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return nil
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})
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flag.Parse()
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args.positionalArgs = flag.Args()
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return args
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@ -140,9 +145,19 @@ func run() int {
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}
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defer auth.Stop()
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var dialer Dialer = new(net.Dialer)
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for _, proxyURL := range args.proxy {
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newDialer, err := proxyDialerFromURL(proxyURL, dialer)
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if err != nil {
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mainLogger.Critical("Failed to create dialer for proxy %q: %v", proxyURL, err)
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return 3
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}
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dialer = newDialer
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}
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server := http.Server{
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Addr: args.bind_address,
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Handler: NewProxyHandler(args.timeout, auth, new(net.Dialer), proxyLogger),
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Handler: NewProxyHandler(args.timeout, auth, maybeWrapWithContextDialer(dialer), proxyLogger),
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ErrorLog: log.New(logWriter, "HTTPSRV : ", log.LstdFlags|log.Lshortfile),
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ReadTimeout: 0,
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ReadHeaderTimeout: 0,
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@ -187,7 +202,9 @@ func run() int {
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}
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server.TLSConfig = cfg
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err = server.ListenAndServeTLS("", "")
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mainLogger.Info("Proxy server started.")
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} else {
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mainLogger.Info("Proxy server started.")
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err = server.ListenAndServe()
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}
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mainLogger.Critical("Server terminated with a reason: %v", err)
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60
utils.go
60
utils.go
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@ -12,13 +12,16 @@ import (
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"log"
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"net"
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"net/http"
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"net/url"
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"os"
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"strings"
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"sync"
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"time"
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"github.com/magisterquis/connectproxy"
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"golang.org/x/crypto/bcrypt"
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"golang.org/x/crypto/ssh/terminal"
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xproxy "golang.org/x/net/proxy"
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)
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const COPY_BUF = 128 * 1024
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@ -300,3 +303,60 @@ func prompt(prompt string, secure bool) (string, error) {
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}
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return input, nil
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}
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type Dialer xproxy.Dialer
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type ContextDialer xproxy.ContextDialer
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var registerDialerTypesOnce sync.Once
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func proxyDialerFromURL(proxyURL string, forward Dialer) (Dialer, error) {
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registerDialerTypesOnce.Do(func() {
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xproxy.RegisterDialerType("http", connectproxy.New)
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xproxy.RegisterDialerType("https", connectproxy.New)
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})
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parsedURL, err := url.Parse(proxyURL)
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if err != nil {
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return nil, fmt.Errorf("unable to parse proxy URL: %w", err)
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}
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d, err := xproxy.FromURL(parsedURL, forward)
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if err != nil {
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return nil, fmt.Errorf("unable to construct proxy dialer from URL %q: %w", proxyURL, err)
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}
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return d, nil
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}
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type wrappedDialer struct {
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d Dialer
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}
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func (wd wrappedDialer) Dial(net, address string) (net.Conn, error) {
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return wd.d.Dial(net, address)
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}
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func (wd wrappedDialer) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
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var (
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conn net.Conn
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done = make(chan struct{}, 1)
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err error
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)
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go func() {
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conn, err = wd.d.Dial(network, address)
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close(done)
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if conn != nil && ctx.Err() != nil {
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conn.Close()
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}
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}()
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select {
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case <-ctx.Done():
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err = ctx.Err()
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case <-done:
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}
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return conn, err
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}
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func maybeWrapWithContextDialer(d Dialer) ContextDialer {
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if xd, ok := d.(ContextDialer); ok {
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return xd
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}
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return wrappedDialer{d}
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}
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