feat: add home page
Jon Lundy
parent
536483b73f
commit
e0b5fe07f0
GPG Key ID:
C63E6D61F3035024
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@ -18,7 +18,7 @@ For best results place this behind a TLS termination that has a wildcard certifi
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on your local machine have a ssh private and public key available:
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```sh
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$ export LOCAL_PORT=3000; export PRIV_KEY=~/.ssh/id_ed25519; sh -c "$(shell http --form POST example.com:2222 pub=@$(PRIV_KEY).pub)"
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$ export LOCAL_PORT=3000; export PRIV_KEY=~/.ssh/id_ed25519; sh -c "$(shell http --form POST :2222 pub=@$(PRIV_KEY).pub)"
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```
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This will setup a reverse proxy on the example host that you can then use to access the local port. It will print a name unique to your ssh key.
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File diff suppressed because one or more lines are too long
File diff suppressed because one or more lines are too long
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@ -0,0 +1,58 @@
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/* Space out content a bit */
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body {
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padding-top: 20px;
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padding-bottom: 20px;
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}
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/* Everything but the jumbotron gets side spacing for mobile first views */
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.header,
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.footer {
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padding-right: 15px;
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padding-left: 15px;
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}
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/* Custom page header */
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.header {
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padding-bottom: 20px;
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border-bottom: 1px solid #e5e5e5;
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}
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/* Make the masthead heading the same height as the navigation */
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.header h3 {
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margin-top: 0;
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margin-bottom: 0;
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line-height: 40px;
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}
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/* Custom page footer */
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.footer {
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padding-top: 19px;
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color: #777;
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border-top: 1px solid #e5e5e5;
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}
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.panel-heading a {
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color: white;
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font-weight: bold;
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}
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.container-narrow > hr {
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margin: 30px 0;
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}
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.table tbody tr th {
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width: 70%
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}
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@media (prefers-color-scheme: dark) {
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body, .panel-body {
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color: white;
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background-color: #121212;
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}
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.table-striped > tbody > tr:nth-of-type(2n+1) {
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background-color: darkslategray;
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}
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}
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@media (prefers-color-scheme: light) {
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}
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19
go.mod
19
go.mod
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@ -1,14 +1,19 @@
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module github.com/jonlundy/sshfwd
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go 1.15
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go 1.18
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require (
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github.com/gliderlabs/ssh v0.3.2
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github.com/soheilhy/cmux v0.1.5
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github.com/wolfeidau/humanhash v1.1.0
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go.uber.org/multierr v1.7.0
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)
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require (
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github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be // indirect
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github.com/gliderlabs/ssh v0.3.2
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github.com/soheilhy/cmux v0.1.5
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github.com/tjarratt/babble v0.0.0-20210505082055-cbca2a4833c1
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github.com/wolfeidau/humanhash v1.1.0 // indirect
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go.uber.org/multierr v1.7.0
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golang.org/dl v0.0.0-20210816190658-eea66df5a73d // indirect
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go.uber.org/atomic v1.7.0 // indirect
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golang.org/x/crypto v0.0.0-20210506145944-38f3c27a63bf // indirect
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golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 // indirect
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golang.org/x/sys v0.0.0-20201119102817-f84b799fce68 // indirect
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golang.org/x/text v0.3.3 // indirect
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)
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8
go.sum
8
go.sum
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@ -1,25 +1,24 @@
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github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be h1:9AeTilPcZAjCFIImctFaOjnTIavg87rW78vTPkQqLI8=
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github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be/go.mod h1:ySMOLuWl6zY27l47sB3qLNK6tF2fkHG55UZxx8oIVo4=
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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/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/gliderlabs/ssh v0.3.2 h1:gcfd1Aj/9RQxvygu4l3sak711f/5+VOwBw9C/7+N4EI=
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github.com/gliderlabs/ssh v0.3.2/go.mod h1:U7qILu1NlMHj9FlMhZLlkCdDnU1DBEAqr0aevW3Awn0=
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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/soheilhy/cmux v0.1.5 h1:jjzc5WVemNEDTLwv9tlmemhC73tI08BNOIGwBOo10Js=
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github.com/soheilhy/cmux v0.1.5/go.mod h1:T7TcVDs9LWfQgPlPsdngu6I6QIoyIFZDDC6sNE1GqG0=
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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 v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
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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/tjarratt/babble v0.0.0-20210505082055-cbca2a4833c1 h1:j8whCiEmvLCXI3scVn+YnklCU8mwJ9ZJ4/DGAKqQbRE=
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github.com/tjarratt/babble v0.0.0-20210505082055-cbca2a4833c1/go.mod h1:O5hBrCGqzfb+8WyY8ico2AyQau7XQwAfEQeEQ5/5V9E=
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github.com/wolfeidau/humanhash v1.1.0 h1:06KgtyyABJGBbrfMONrW7S+b5TTYVyrNB/jss5n7F3E=
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github.com/wolfeidau/humanhash v1.1.0/go.mod h1:jkpynR1bfyfkmKEQudIC0osWKynFAoayRjzH9OJdVIg=
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go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw=
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go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
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go.uber.org/multierr v1.7.0 h1:zaiO/rmgFjbmCXdSYJWQcdvOCsthmdaHfr3Gm2Kx4Ec=
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go.uber.org/multierr v1.7.0/go.mod h1:7EAYxJLBy9rStEaz58O2t4Uvip6FSURkq8/ppBp95ak=
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golang.org/dl v0.0.0-20210816190658-eea66df5a73d h1:fY+sw1TVAhVSrszhxX7Ew04Y6V9Znfa8s5O1HTzTsOQ=
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golang.org/dl v0.0.0-20210816190658-eea66df5a73d/go.mod h1:IUMfjQLJQd4UTqG1Z90tenwKoCX93Gn3MAQJMOSBsDQ=
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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 v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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golang.org/x/crypto v0.0.0-20210506145944-38f3c27a63bf h1:B2n+Zi5QeYRDAEodEu72OS36gmTWjgpXr2+cWcBW90o=
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@ -41,4 +40,5 @@ golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
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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/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
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gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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@ -0,0 +1,33 @@
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{{define "main"}}
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="UTF-8">
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{{template "meta" .}}
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<title>SSH Fwd</title>
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<link href="/assets/bootstrap.min.css" rel="stylesheet" integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7" crossorigin="anonymous">
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<link href="/assets/sshfwd.css" rel="stylesheet" crossorigin="anonymous">
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</head>
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<body>
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<div class="container-fluid">
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<div class="header clearfix">
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<nav>
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<ul class="nav nav-pills pull-right">
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<li role="presentation"><a href="/">Home</a></li>
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</ul>
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</nav>
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<h3 class="text-muted">SSH Fwd</h3>
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</div>
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</div>
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<div class=container>
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{{template "content" .}}
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</div>
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</body>
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</html>
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{{end}}
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5
main.go
5
main.go
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@ -2,7 +2,6 @@ package main
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import (
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"context"
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"io/ioutil"
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"log"
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"net"
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"net/http"
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@ -44,7 +43,7 @@ func run(ctx context.Context) {
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)
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hostKeys := envMust("SSH_HOSTKEYS")
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files, err := ioutil.ReadDir(hostKeys)
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files, err := os.ReadDir(hostKeys)
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if err != nil {
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log.Fatal(err)
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}
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@ -52,6 +51,8 @@ func run(ctx context.Context) {
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opts = append(opts, ssh.HostKeyFile(filepath.Join(hostKeys, f.Name())))
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}
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loadTemplates()
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srv := &server{
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bindHost: envDefault("SSH_HOST", bindHost),
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domainName: envDefault("SSH_DOMAIN", domainName),
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@ -0,0 +1,61 @@
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{{template "main" .}}
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{{define "meta"}}
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<meta http-equiv="refresh" content="30">
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{{end}}
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{{define "content"}}
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<h2>What is this?</h2>
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<p>This is a reverse proxy service that uses SSH as the transport. It works similar to ngrok or localtunnel.me.</p>
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<p>
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You run the service on a internet addressible host and ssh to it. Using ssh remote forwards (ie. ssh -R) the port
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on the remote host will be forwared to the configured port on your local machine.
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</p>
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<h2>How does it work?</h2>
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<p>
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<ol>
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<li>You add your SSH public key</li>
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<li>Connect to SSH</li>
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<li>???</li>
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<li>Profit!</li>
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</ol>
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</p>
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<form class="form-inline" method="POST" action="/peers/req">
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<label>SSH Public Key:</label>
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<div class="input-group input-group-sm">
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<input class="form-control" type="text" name="pub" placeholder="ssh-key ...">
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</div>
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<button class="btn btn-default" type="submit">Submit</button>
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</form>
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<div class=row>
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<h2>Connections</h2>
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{{ with $args := . }}
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{{ range $user := .Users }}
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<div class="panel panel-primary">
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<div class="panel-heading">
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<a href="/user/{{ $user.Name }}">
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{{ $user.Name }}
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</a>
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<div style='float:right'>
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{{ if $user.Active }}
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<a href="/user/{{ $user.Name }}" class='btn btn-success'>Active</a>
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{{ else }}
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<a href="/user/{{ $user.Name }}" class='btn btn-danger'>Disconnected</a>
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{{ end }}
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</div>
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</div>
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<div class="panel-body">
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<pre>ssh -T -p {{ $args.ListenPort }} {{ $user.Name }}@{{ $args.DomainName }} -R "{{ $user.BindPort }}:localhost:$LOCAL_PORT" -i $PRIV_KEY</pre>
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</div>
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</div>
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{{ end }}
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</div>
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{{ end }}
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{{ end }}
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146
server.go
146
server.go
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@ -3,38 +3,49 @@ package main
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import (
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"context"
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"crypto/sha256"
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"embed"
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"fmt"
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"io/fs"
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"log"
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"net"
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"net/http"
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"net/http/httputil"
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"strings"
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"sync"
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"text/template"
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"time"
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"github.com/gliderlabs/ssh"
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"github.com/wolfeidau/humanhash"
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)
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var (
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//go:embed pages/* layouts/* assets/*
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files embed.FS
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templates map[string]*template.Template
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)
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type user struct {
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name string
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pubkey ssh.PublicKey
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bindHost string
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bindPort uint32
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Name string
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Pubkey ssh.PublicKey
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BindHost string
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BindPort uint32
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ctx ssh.Context
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proxy http.Handler
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lastLogin time.Time
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LastLogin time.Time
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}
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func (u *user) Active() bool { return u.ctx != nil }
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func (u *user) String() string {
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var b strings.Builder
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fmt.Fprintln(&b, "User: ", u.name)
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fmt.Fprintln(&b, "User: ", u.Name)
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fmt.Fprintf(&b, " Ptr: %p\n", u)
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fmt.Fprintf(&b, " Pubkey: %x\n", u.pubkey)
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fmt.Fprintln(&b, " Host: ", u.bindHost)
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fmt.Fprintln(&b, " Port: ", u.bindPort)
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fmt.Fprintf(&b, " Pubkey: %x\n", u.Pubkey)
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fmt.Fprintln(&b, " Host: ", u.BindHost)
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fmt.Fprintln(&b, " Port: ", u.BindPort)
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fmt.Fprintf(&b, " Active: %t\n", u.ctx != nil)
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fmt.Fprintln(&b, " LastLog:", u.lastLogin)
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fmt.Fprintln(&b, " LastLog:", u.LastLogin)
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return b.String()
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}
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@ -67,19 +78,19 @@ func (s *server) String() string {
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func (srv *server) addUser(pubkey ssh.PublicKey) *user {
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u := &user{}
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u.lastLogin = time.Now()
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u.name = fingerprintHuman(pubkey)
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u.name = strings.ToLower(u.name)
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u.name = filterName.ReplaceAllString(u.name, "")
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u.LastLogin = time.Now()
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u.Name = fingerprintHuman(pubkey)
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u.Name = strings.ToLower(u.Name)
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u.Name = filterName.ReplaceAllString(u.Name, "")
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if g, ok := srv.users.LoadOrStore(u.name, u); ok {
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if g, ok := srv.users.LoadOrStore(u.Name, u); ok {
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u = g.(*user)
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return u
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}
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u.pubkey = pubkey
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u.bindPort = srv.nextPort()
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u.bindHost = srv.bindHost
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u.Pubkey = pubkey
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u.BindPort = srv.nextPort()
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u.BindHost = srv.bindHost
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return u
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}
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@ -87,7 +98,7 @@ func (srv *server) disconnectUser(name string) {
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if u, ok := srv.getUserByName(name); ok {
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u.ctx = nil
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u.proxy = nil
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srv.ports.Delete(u.bindPort)
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srv.ports.Delete(u.BindPort)
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}
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}
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func (srv *server) getUserByPort(port uint32) (*user, bool) {
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@ -121,18 +132,6 @@ func (srv *server) listUsers() []*user {
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return lis
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}
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func (srv *server) listConnectedUsers() []*user {
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var lis []*user
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srv.ports.Range(func(key, value interface{}) bool {
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if u, ok := value.(*user); ok {
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lis = append(lis, u)
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return true
|
||||
}
|
||||
return false
|
||||
})
|
||||
|
||||
return lis
|
||||
}
|
||||
func (srv *server) nextPort() uint32 {
|
||||
if srv.portNext < srv.portStart || srv.portNext > srv.portEnd {
|
||||
srv.portNext = srv.portStart
|
||||
|
|
@ -160,7 +159,7 @@ func (srv *server) newSession(ctx context.Context) func(ssh.Session) {
|
|||
}
|
||||
|
||||
if u, ok := srv.getUserByName(s.User()); ok {
|
||||
host := fmt.Sprintf("%v:%v", u.bindHost, u.bindPort)
|
||||
host := fmt.Sprintf("%v:%v", u.BindHost, u.BindPort)
|
||||
director := func(req *http.Request) {
|
||||
if h := req.Header.Get("X-Forwarded-Host"); h == "" {
|
||||
req.Header.Set("X-Forwarded-Host", req.Host)
|
||||
|
|
@ -176,7 +175,7 @@ func (srv *server) newSession(ctx context.Context) func(ssh.Session) {
|
|||
fmt.Fprintln(s, string(requestDump))
|
||||
}
|
||||
u.proxy = &httputil.ReverseProxy{Director: director}
|
||||
fmt.Fprintf(s, "Created HTTP listener at: %v%v\n\n", u.name, srv.domainSuffix)
|
||||
fmt.Fprintf(s, "Created HTTP listener at: %v%v\n\n", u.Name, srv.domainSuffix)
|
||||
}
|
||||
|
||||
select {
|
||||
|
|
@ -201,11 +200,11 @@ func (srv *server) optAuthUser() []ssh.Option {
|
|||
return false
|
||||
}
|
||||
|
||||
if ssh.KeysEqual(key, u.pubkey) {
|
||||
log.Println("User:", ctx.User(), "Authorized:", u.bindHost, u.bindPort, ctx.ClientVersion(), ctx.SessionID(), ctx.LocalAddr(), ctx.RemoteAddr())
|
||||
if ssh.KeysEqual(key, u.Pubkey) {
|
||||
log.Println("User:", ctx.User(), "Authorized:", u.BindHost, u.BindPort, ctx.ClientVersion(), ctx.SessionID(), ctx.LocalAddr(), ctx.RemoteAddr())
|
||||
u.ctx = ctx
|
||||
u.lastLogin = time.Now()
|
||||
if _, loaded := srv.ports.LoadOrStore(u.bindPort, u); loaded {
|
||||
u.LastLogin = time.Now()
|
||||
if _, loaded := srv.ports.LoadOrStore(u.BindPort, u); loaded {
|
||||
log.Println("User:", ctx.User(), "already connected!")
|
||||
return false
|
||||
}
|
||||
|
|
@ -232,11 +231,11 @@ func (srv *server) optAuthUser() []ssh.Option {
|
|||
}
|
||||
|
||||
if u.ctx.SessionID() != ctx.SessionID() {
|
||||
log.Println("Port", bindPort, "in use by", u.name, u.ctx.SessionID())
|
||||
log.Println("Port", bindPort, "in use by", u.Name, u.ctx.SessionID())
|
||||
return false
|
||||
}
|
||||
|
||||
if bindHost != strings.Trim(u.bindHost, "[]") || bindPort != u.bindPort {
|
||||
if bindHost != strings.Trim(u.BindHost, "[]") || bindPort != u.BindPort {
|
||||
log.Println("User", ctx.User(), "Not Allowed: ", bindHost, bindPort, ctx.ClientVersion(), ctx.SessionID(), ctx.LocalAddr(), ctx.RemoteAddr())
|
||||
return false
|
||||
}
|
||||
|
|
@ -282,25 +281,43 @@ func (srv *server) handleHTTP(rw http.ResponseWriter, r *http.Request) {
|
|||
pubkey, _, _, _, err := ssh.ParseAuthorizedKey([]byte(r.FormValue("pub")))
|
||||
if err != nil {
|
||||
rw.WriteHeader(400)
|
||||
fmt.Fprintln(rw, "ERR READING KEY")
|
||||
fmt.Fprintln(rw, "ERR READING KEY", err)
|
||||
return
|
||||
}
|
||||
u := srv.addUser(pubkey)
|
||||
rw.WriteHeader(201)
|
||||
fmt.Fprintf(rw, `ssh -T -p %v %v@%v -R "%v:%v:localhost:$LOCAL_PORT" -i $PRIV_KEY`+"\n", srv.listenPort, u.name, srv.domainName, u.bindHost, u.bindPort)
|
||||
rw.Header().Set("Location", "/")
|
||||
rw.WriteHeader(http.StatusFound)
|
||||
fmt.Fprintf(rw, `ssh -T -p %v %v@%v -R "%v:%v:localhost:$LOCAL_PORT" -i $PRIV_KEY`+"\n", srv.listenPort, u.Name, srv.domainName, u.BindHost, u.BindPort)
|
||||
return
|
||||
}
|
||||
|
||||
fmt.Fprintln(rw, "Hello!")
|
||||
fmt.Fprintln(rw, srv)
|
||||
fmt.Fprintln(rw, "Registered Users")
|
||||
for _, u := range srv.listUsers() {
|
||||
fmt.Fprintln(rw, u)
|
||||
// fmt.Fprintln(rw, "Hello!")
|
||||
// fmt.Fprintln(rw, srv)
|
||||
// fmt.Fprintln(rw, "Registered Users")
|
||||
// for _, u := range srv.listUsers() {
|
||||
// fmt.Fprintln(rw, u)
|
||||
// }
|
||||
|
||||
// fmt.Fprintln(rw, "Connected Users")
|
||||
// for _, u := range srv.listConnectedUsers() {
|
||||
// fmt.Fprintln(rw, u)
|
||||
// }
|
||||
|
||||
a, _ := fs.Sub(files, "assets")
|
||||
assets := http.StripPrefix("/assets/", http.FileServer(http.FS(a)))
|
||||
if strings.HasPrefix(r.URL.Path, "/assets/") {
|
||||
assets.ServeHTTP(rw, r)
|
||||
return
|
||||
}
|
||||
|
||||
fmt.Fprintln(rw, "Connected Users")
|
||||
for _, u := range srv.listConnectedUsers() {
|
||||
fmt.Fprintln(rw, u)
|
||||
t := templates["home.go.tpl"]
|
||||
err := t.Execute(rw, map[string]any{
|
||||
"Users": srv.listUsers(),
|
||||
"ListenPort": srv.listenPort,
|
||||
"DomainName": srv.domainName,
|
||||
})
|
||||
if err != nil {
|
||||
log.Println(err)
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -309,3 +326,32 @@ func fingerprintHuman(pubKey ssh.PublicKey) string {
|
|||
h, _ := humanhash.Humanize(sha256sum[:], 3)
|
||||
return h
|
||||
}
|
||||
|
||||
var funcMap = map[string]any{}
|
||||
|
||||
func loadTemplates() error {
|
||||
if templates != nil {
|
||||
return nil
|
||||
}
|
||||
templates = make(map[string]*template.Template)
|
||||
tmplFiles, err := fs.ReadDir(files, "pages")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
for _, tmpl := range tmplFiles {
|
||||
if tmpl.IsDir() {
|
||||
continue
|
||||
}
|
||||
pt := template.New(tmpl.Name())
|
||||
pt.Funcs(funcMap)
|
||||
pt, err = pt.ParseFS(files, "pages/"+tmpl.Name(), "layouts/*.go.tpl")
|
||||
if err != nil {
|
||||
log.Println(err)
|
||||
|
||||
return err
|
||||
}
|
||||
templates[tmpl.Name()] = pt
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue