From fdcab80a58dc5e45613d6c0601049a423a8dd2a9 Mon Sep 17 00:00:00 2001 From: Yar Kravtsov Date: Sun, 3 Nov 2024 09:44:17 +0200 Subject: [PATCH] feat: Implement SSH port forwarding and add integration tests --- go.mod | 46 ++++++++- go.sum | 173 +++++++++++++++++++++++++++++-- pkg/executor/ssh/ssh.go | 77 ++++++++++++++ pkg/executor/ssh/ssh_test.go | 191 +++++++++++++++++++++++++++++++++++ 4 files changed, 476 insertions(+), 11 deletions(-) diff --git a/go.mod b/go.mod index 58ce769..cafc473 100644 --- a/go.mod +++ b/go.mod @@ -12,26 +12,66 @@ require ( github.com/joho/godotenv v1.5.1 github.com/spf13/cobra v1.8.1 github.com/stretchr/testify v1.9.0 + github.com/testcontainers/testcontainers-go v0.34.0 golang.org/x/crypto v0.28.0 golang.org/x/term v0.25.0 gopkg.in/yaml.v3 v3.0.1 ) require ( + dario.cat/mergo v1.0.0 // indirect + github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 // indirect + github.com/Microsoft/go-winio v0.6.2 // indirect + github.com/cenkalti/backoff/v4 v4.2.1 // indirect + github.com/containerd/containerd v1.7.18 // indirect + github.com/containerd/log v0.1.0 // indirect + github.com/containerd/platforms v0.2.1 // indirect + github.com/cpuguy83/dockercfg v0.3.2 // indirect github.com/davecgh/go-spew v1.1.1 // indirect + github.com/distribution/reference v0.6.0 // indirect + github.com/docker/docker v27.1.1+incompatible // indirect + github.com/docker/go-connections v0.5.0 // indirect + github.com/docker/go-units v0.5.0 // indirect + github.com/felixge/httpsnoop v1.0.4 // indirect github.com/gabriel-vasile/mimetype v1.4.6 // indirect + github.com/go-logr/logr v1.4.1 // indirect + github.com/go-logr/stdr v1.2.2 // indirect + github.com/go-ole/go-ole v1.2.6 // indirect github.com/go-playground/locales v0.14.1 // indirect github.com/go-playground/universal-translator v0.18.1 // indirect + github.com/gogo/protobuf v1.3.2 // indirect + github.com/google/uuid v1.6.0 // indirect github.com/inconshreveable/mousetrap v1.1.0 // indirect - github.com/kr/pretty v0.3.0 // indirect + github.com/klauspost/compress v1.17.4 // indirect + github.com/kr/text v0.2.0 // indirect github.com/leodido/go-urn v1.4.0 // indirect + github.com/lufia/plan9stats v0.0.0-20211012122336-39d0f177ccd0 // indirect + github.com/magiconair/properties v1.8.7 // indirect github.com/mattn/go-colorable v0.1.13 // indirect github.com/mattn/go-isatty v0.0.20 // indirect + github.com/moby/docker-image-spec v1.3.1 // indirect + github.com/moby/patternmatcher v0.6.0 // indirect + github.com/moby/sys/sequential v0.5.0 // indirect + github.com/moby/sys/user v0.1.0 // indirect + github.com/moby/term v0.5.0 // indirect + github.com/morikuni/aec v1.0.0 // indirect + github.com/opencontainers/go-digest v1.0.0 // indirect + github.com/opencontainers/image-spec v1.1.0 // indirect + github.com/pkg/errors v0.9.1 // indirect github.com/pmezard/go-difflib v1.0.0 // indirect - github.com/rogpeppe/go-internal v1.8.1 // indirect + github.com/power-devops/perfstat v0.0.0-20210106213030-5aafc221ea8c // indirect + github.com/shirou/gopsutil/v3 v3.23.12 // indirect + github.com/shoenig/go-m1cpu v0.1.6 // indirect + github.com/sirupsen/logrus v1.9.3 // indirect github.com/spf13/pflag v1.0.5 // indirect + github.com/tklauser/go-sysconf v0.3.12 // indirect + github.com/tklauser/numcpus v0.6.1 // indirect + github.com/yusufpapurcu/wmi v1.2.3 // indirect + go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.49.0 // indirect + go.opentelemetry.io/otel v1.24.0 // indirect + go.opentelemetry.io/otel/metric v1.24.0 // indirect + go.opentelemetry.io/otel/trace v1.24.0 // indirect golang.org/x/net v0.30.0 // indirect golang.org/x/sys v0.26.0 // indirect golang.org/x/text v0.19.0 // indirect - gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect ) diff --git a/go.sum b/go.sum index f078701..1b954f0 100644 --- a/go.sum +++ b/go.sum @@ -1,15 +1,53 @@ +dario.cat/mergo v1.0.0 h1:AGCNq9Evsj31mOgNPcLyXc+4PNABt905YmuqPYYpBWk= +dario.cat/mergo v1.0.0/go.mod h1:uNxQE+84aUszobStD9th8a29P2fMDhsBdgRYvZOxGmk= +github.com/AdaLogics/go-fuzz-headers v0.0.0-20230811130428-ced1acdcaa24 h1:bvDV9vkmnHYOMsOr4WLk+Vo07yKIzd94sVoIqshQ4bU= +github.com/AdaLogics/go-fuzz-headers v0.0.0-20230811130428-ced1acdcaa24/go.mod h1:8o94RPi1/7XTJvwPpRSzSUedZrtlirdB3r9Z20bi2f8= +github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1 h1:UQHMgLO+TxOElx5B5HZ4hJQsoJ/PvUvKRhJHDQXO8P8= +github.com/Azure/go-ansiterm v0.0.0-20210617225240-d185dfc1b5a1/go.mod h1:xomTg63KZ2rFqZQzSB4Vz2SUXa1BpHTVz9L5PTmPC4E= +github.com/Microsoft/go-winio v0.6.2 h1:F2VQgta7ecxGYO8k3ZZz3RS8fVIXVxONVUPlNERoyfY= +github.com/Microsoft/go-winio v0.6.2/go.mod h1:yd8OoFMLzJbo9gZq8j5qaps8bJ9aShtEA8Ipt1oGCvU= github.com/bramvdbogaerde/go-scp v1.5.0 h1:a9BinAjTfQh273eh7vd3qUgmBC+bx+3TRDtkZWmIpzM= github.com/bramvdbogaerde/go-scp v1.5.0/go.mod h1:on2aH5AxaFb2G0N5Vsdy6B0Ml7k9HuHSwfo1y0QzAbQ= github.com/briandowns/spinner v1.23.1 h1:t5fDPmScwUjozhDj4FA46p5acZWIPXYE30qW2Ptu650= github.com/briandowns/spinner v1.23.1/go.mod h1:LaZeM4wm2Ywy6vO571mvhQNRcWfRUnXOs0RcKV0wYKM= +github.com/cenkalti/backoff/v4 v4.2.1 h1:y4OZtCnogmCPw98Zjyt5a6+QwPLGkiQsYW5oUqylYbM= +github.com/cenkalti/backoff/v4 v4.2.1/go.mod h1:Y3VNntkOUPxTVeUxJ/G5vcM//AlwfmyYozVcomhLiZE= +github.com/containerd/containerd v1.7.18 h1:jqjZTQNfXGoEaZdW1WwPU0RqSn1Bm2Ay/KJPUuO8nao= +github.com/containerd/containerd v1.7.18/go.mod h1:IYEk9/IO6wAPUz2bCMVUbsfXjzw5UNP5fLz4PsUygQ4= +github.com/containerd/log v0.1.0 h1:TCJt7ioM2cr/tfR8GPbGf9/VRAX8D2B4PjzCpfX540I= +github.com/containerd/log v0.1.0/go.mod h1:VRRf09a7mHDIRezVKTRCrOq78v577GXq3bSa3EhrzVo= +github.com/containerd/platforms v0.2.1 h1:zvwtM3rz2YHPQsF2CHYM8+KtB5dvhISiXh5ZpSBQv6A= +github.com/containerd/platforms v0.2.1/go.mod h1:XHCb+2/hzowdiut9rkudds9bE5yJ7npe7dG/wG+uFPw= +github.com/cpuguy83/dockercfg v0.3.2 h1:DlJTyZGBDlXqUZ2Dk2Q3xHs/FtnooJJVaad2S9GKorA= +github.com/cpuguy83/dockercfg v0.3.2/go.mod h1:sugsbF4//dDlL/i+S+rtpIWp+5h0BHJHfjj5/jFyUJc= github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o= github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E= +github.com/creack/pty v1.1.18 h1:n56/Zwd5o6whRC5PMGretI4IdRLlmBXYNjScPaBgsbY= +github.com/creack/pty v1.1.18/go.mod h1:MOBLtS5ELjhRRrroQr9kyvTxUAFNvYEK993ew/Vr4O4= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/distribution/reference v0.6.0 h1:0IXCQ5g4/QMHHkarYzh5l+u8T3t73zM5QvfrDyIgxBk= +github.com/distribution/reference v0.6.0/go.mod h1:BbU0aIcezP1/5jX/8MP0YiH4SdvB5Y4f/wlDRiLyi3E= +github.com/docker/docker v27.1.1+incompatible h1:hO/M4MtV36kzKldqnA37IWhebRA+LnqqcqDja6kVaKY= +github.com/docker/docker v27.1.1+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk= +github.com/docker/go-connections v0.5.0 h1:USnMq7hx7gwdVZq1L49hLXaFtUdTADjXGp+uj1Br63c= +github.com/docker/go-connections v0.5.0/go.mod h1:ov60Kzw0kKElRwhNs9UlUHAE/F9Fe6GLaXnqyDdmEXc= +github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4= +github.com/docker/go-units v0.5.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk= github.com/fatih/color v1.17.0 h1:GlRw1BRJxkpqUCBKzKOw098ed57fEsKeNjpTe3cSjK4= github.com/fatih/color v1.17.0/go.mod h1:YZ7TlrGPkiz6ku9fK3TLD/pl3CpsiFyu8N92HLgmosI= +github.com/felixge/httpsnoop v1.0.4 h1:NFTV2Zj1bL4mc9sqWACXbQFVBBg2W3GPvqp8/ESS2Wg= +github.com/felixge/httpsnoop v1.0.4/go.mod h1:m8KPJKqk1gH5J9DgRY2ASl2lWCfGKXixSwevea8zH2U= github.com/gabriel-vasile/mimetype v1.4.6 h1:3+PzJTKLkvgjeTbts6msPJt4DixhT4YtFNf1gtGe3zc= github.com/gabriel-vasile/mimetype v1.4.6/go.mod h1:JX1qVKqZd40hUPpAfiNTe0Sne7hdfKSbOqqmkq8GCXc= +github.com/go-logr/logr v1.2.2/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A= +github.com/go-logr/logr v1.4.1 h1:pKouT5E8xu9zeFC39JXRDukb6JFQPXM5p5I91188VAQ= +github.com/go-logr/logr v1.4.1/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY= +github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag= +github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE= +github.com/go-ole/go-ole v1.2.6 h1:/Fpf6oFPoeFik9ty7siob0G6Ke8QvQEuVcuChpwXzpY= +github.com/go-ole/go-ole v1.2.6/go.mod h1:pprOEPIfldk/42T2oK7lQ4v4JSDwmV0As9GaiUsvbm0= github.com/go-playground/assert/v2 v2.2.0 h1:JvknZsQTYeFEAhQwI4qEt9cyV5ONwRHC+lYKSsYSR8s= github.com/go-playground/assert/v2 v2.2.0/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4= github.com/go-playground/locales v0.14.1 h1:EWaQ/wswjilfKLTECiXz7Rh+3BjFhfDFKv/oXslEjJA= @@ -18,54 +56,173 @@ github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJn github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY= github.com/go-playground/validator/v10 v10.22.1 h1:40JcKH+bBNGFczGuoBYgX4I6m/i27HYW8P9FDk5PbgA= github.com/go-playground/validator/v10 v10.22.1/go.mod h1:dbuPbCMFw/DrkbEynArYaCwl3amGuJotoKCe95atGMM= +github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q= +github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q= +github.com/google/go-cmp v0.5.6/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= +github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY= +github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI= +github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY= +github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0= +github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo= +github.com/grpc-ecosystem/grpc-gateway/v2 v2.16.0 h1:YBftPWNWd4WwGqtY2yeZL2ef8rHAxPBD8KFhJpmcqms= +github.com/grpc-ecosystem/grpc-gateway/v2 v2.16.0/go.mod h1:YN5jB8ie0yfIUg6VvR9Kz84aCaG7AsGZnLjhHbUqwPg= github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8= github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw= github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0= github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4= -github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo= -github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI= +github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8= +github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck= +github.com/klauspost/compress v1.17.4 h1:Ej5ixsIri7BrIjBkRZLTo6ghwrEtHFk7ijlczPW4fZ4= +github.com/klauspost/compress v1.17.4/go.mod h1:/dCuZOvVtNoHsyb+cuJD3itjs3NbnF6KH9zAO4BDxPM= github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0= github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk= -github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ= -github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI= github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY= github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE= github.com/leodido/go-urn v1.4.0 h1:WT9HwE9SGECu3lg4d/dIA+jxlljEa1/ffXKmRjqdmIQ= github.com/leodido/go-urn v1.4.0/go.mod h1:bvxc+MVxLKB4z00jd1z+Dvzr47oO32F/QSNjSBOlFxI= +github.com/lufia/plan9stats v0.0.0-20211012122336-39d0f177ccd0 h1:6E+4a0GO5zZEnZ81pIr0yLvtUWk2if982qA3F3QD6H4= +github.com/lufia/plan9stats v0.0.0-20211012122336-39d0f177ccd0/go.mod h1:zJYVVT2jmtg6P3p1VtQj7WsuWi/y4VnjVBn7F8KPB3I= +github.com/magiconair/properties v1.8.7 h1:IeQXZAiQcpL9mgcAe1Nu6cX9LLw6ExEHKjN0VQdvPDY= +github.com/magiconair/properties 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v3.5.1/go.mod h1:isy3WKz7GK6uNw/sbHzfKBLvlvXwUyV06n6brMxxopU= diff --git a/pkg/executor/ssh/ssh.go b/pkg/executor/ssh/ssh.go index cb1ca8e..c0e956c 100644 --- a/pkg/executor/ssh/ssh.go +++ b/pkg/executor/ssh/ssh.go @@ -5,6 +5,7 @@ import ( "context" "fmt" "io" + "net" "os" "path/filepath" "strings" @@ -293,3 +294,79 @@ func getSSHDir() (string, error) { return filepath.Join(home, ".ssh"), nil } + +func (c *Client) CreateTunnel(ctx context.Context, localPort, remotePort int) error { + if err := c.ensureConnected(); err != nil { + return fmt.Errorf("failed to ensure SSH connection: %w", err) + } + + listener, err := net.Listen("tcp", fmt.Sprintf("localhost:%d", localPort)) + if err != nil { + return fmt.Errorf("failed to start local listener: %w", err) + } + defer listener.Close() + + errChan := make(chan error, 1) + + go func() { + for { + local, err := listener.Accept() + if err != nil { + if !strings.Contains(err.Error(), "use of closed network connection") { + errChan <- fmt.Errorf("failed to accept connection: %w", err) + } + return + } + + go func(localConn net.Conn) { + defer localConn.Close() + + session, err := c.sshClient.NewSession() + if err != nil { + fmt.Printf("Failed to create session: %v\n", err) + return + } + defer session.Close() + + remoteConn, err := c.sshClient.Dial("tcp", fmt.Sprintf("127.0.0.1:%d", remotePort)) + if err != nil { + fmt.Printf("Failed to connect to remote port: %v\n", err) + return + } + defer remoteConn.Close() + + copyErrChan := make(chan error, 2) + doneChan := make(chan bool, 2) + + go func() { + _, err := io.Copy(localConn, remoteConn) + copyErrChan <- err + doneChan <- true + }() + + go func() { + _, err := io.Copy(remoteConn, localConn) + copyErrChan <- err + doneChan <- true + }() + + select { + case err := <-copyErrChan: + if err != nil && !strings.Contains(err.Error(), "use of closed network connection") { + fmt.Printf("Copy operation failed: %v\n", err) + } + <-doneChan + case <-ctx.Done(): + return + } + }(local) + } + }() + + select { + case err := <-errChan: + return err + case <-ctx.Done(): + return ctx.Err() + } +} diff --git a/pkg/executor/ssh/ssh_test.go b/pkg/executor/ssh/ssh_test.go index f36cd0f..13d8b80 100644 --- a/pkg/executor/ssh/ssh_test.go +++ b/pkg/executor/ssh/ssh_test.go @@ -1,11 +1,27 @@ package ssh import ( + "context" + "crypto/rand" + "encoding/pem" + "fmt" + "io" + "net" + "net/http" "os" "path/filepath" + "strings" "testing" + "time" + "github.com/docker/docker/api/types" + "github.com/docker/docker/pkg/archive" "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "github.com/testcontainers/testcontainers-go" + "github.com/testcontainers/testcontainers-go/wait" + "golang.org/x/crypto/ed25519" + "golang.org/x/crypto/ssh" ) func TestFindSSHKey(t *testing.T) { @@ -49,3 +65,178 @@ func TestFindSSHKey(t *testing.T) { assert.Error(t, err) assert.Nil(t, key) } + +func TestClient_CreateTunnel(t *testing.T) { + t.Parallel() + + ctx, cancel := context.WithTimeout(context.Background(), 2*time.Minute) + defer cancel() + + // Setup + tempDir := t.TempDir() + privateKeyPath, publicKeyPath := filepath.Join(tempDir, "id_rsa"), filepath.Join(tempDir, "id_rsa.pub") + require.NoError(t, generateSSHKeyPair(privateKeyPath, publicKeyPath)) + + publicKeyBytes, err := os.ReadFile(publicKeyPath) + require.NoError(t, err) + + imageTag := "ssh-nginx-test:latest" + dockerfilePath := createDockerfile(t, strings.TrimSpace(string(publicKeyBytes))) + buildImage(t, ctx, dockerfilePath, imageTag) + + // Start container + container := startContainer(t, ctx, imageTag) + defer func() { require.NoError(t, container.Terminate(ctx)) }() + + sshPort, err := container.MappedPort(ctx, "22") + require.NoError(t, err) + + // Create SSH client + key, err := os.ReadFile(privateKeyPath) + require.NoError(t, err) + + client, err := ConnectWithUser("localhost", sshPort.Int(), "root", key) + require.NoError(t, err) + defer client.Close() + + // Test + localPort, remotePort := 23451, 80 + tunnelCtx, tunnelCancel := context.WithCancel(ctx) + defer tunnelCancel() + + errCh := make(chan error, 1) + go func() { + errCh <- client.CreateTunnel(tunnelCtx, localPort, remotePort) + }() + + require.NoError(t, waitForPort(t, localPort, 5*time.Second)) + + resp, err := makeHTTPRequest(localPort) + require.NoError(t, err) + defer resp.Body.Close() + + body, err := io.ReadAll(resp.Body) + require.NoError(t, err) + + assert.Equal(t, http.StatusOK, resp.StatusCode) + assert.Contains(t, string(body), "Welcome to nginx!") + + // Cleanup + tunnelCancel() + select { + case err := <-errCh: + assert.ErrorIs(t, err, context.Canceled) + case <-time.After(5 * time.Second): + t.Error("Tunnel didn't close within timeout") + } +} + +func waitForPort(t *testing.T, port int, timeout time.Duration) error { + t.Helper() + deadline := time.Now().Add(timeout) + for time.Now().Before(deadline) { + conn, err := net.DialTimeout("tcp", fmt.Sprintf("localhost:%d", port), time.Second) + if err == nil { + conn.Close() + return nil + } + time.Sleep(100 * time.Millisecond) + } + return fmt.Errorf("port %d not available after %s", port, timeout) +} + +func startContainer(t *testing.T, ctx context.Context, imageTag string) testcontainers.Container { + t.Helper() + req := testcontainers.ContainerRequest{ + Image: imageTag, + ExposedPorts: []string{"22/tcp", "80/tcp"}, + WaitingFor: wait.ForListeningPort("22/tcp").WithStartupTimeout(time.Minute), + } + + container, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{ + ContainerRequest: req, + Started: true, + }) + require.NoError(t, err) + return container +} + +func makeHTTPRequest(port int) (*http.Response, error) { + httpClient := &http.Client{Timeout: 5 * time.Second} + return httpClient.Get(fmt.Sprintf("http://localhost:%d", port)) +} + +func generateSSHKeyPair(privateKeyPath, publicKeyPath string) error { + publicKey, privateKey, err := ed25519.GenerateKey(rand.Reader) + if err != nil { + return err + } + + privateKeyBytes, err := ssh.MarshalPrivateKey(privateKey, "") + if err != nil { + return err + } + + privateKeyPEM := &pem.Block{ + Type: "OPENSSH PRIVATE KEY", + Bytes: privateKeyBytes.Bytes, + } + + privateKeyPEMBytes := pem.EncodeToMemory(privateKeyPEM) + + err = os.WriteFile(privateKeyPath, privateKeyPEMBytes, 0600) + if err != nil { + return err + } + + publicKeySSH, err := ssh.NewPublicKey(publicKey) + if err != nil { + return err + } + + return os.WriteFile(publicKeyPath, ssh.MarshalAuthorizedKey(publicKeySSH), 0644) +} + +func createDockerfile(t *testing.T, publicKey string) string { + content := `FROM ubuntu:20.04 + +RUN apt-get update && apt-get install -y openssh-server nginx + +RUN mkdir /root/.ssh && \ + echo "%s" > /root/.ssh/authorized_keys && \ + chmod 700 /root/.ssh && \ + chmod 600 /root/.ssh/authorized_keys + +RUN mkdir /run/sshd + +EXPOSE 22 80 + +CMD service ssh start && nginx -g 'daemon off;' +` + + dockerfilePath := filepath.Join(t.TempDir(), "Dockerfile") + err := os.WriteFile(dockerfilePath, []byte(fmt.Sprintf(content, publicKey)), 0644) + require.NoError(t, err) + return dockerfilePath +} + +func buildImage(t *testing.T, ctx context.Context, dockerfilePath, imageTag string) { + cli, err := testcontainers.NewDockerClientWithOpts(ctx) + require.NoError(t, err) + + tar, err := archive.TarWithOptions(filepath.Dir(dockerfilePath), &archive.TarOptions{}) + require.NoError(t, err) + + opts := types.ImageBuildOptions{ + Dockerfile: filepath.Base(dockerfilePath), + Tags: []string{imageTag}, + Remove: true, + } + + resp, err := cli.ImageBuild(ctx, tar, opts) + require.NoError(t, err) + defer resp.Body.Close() + + _, err = io.Copy(io.Discard, resp.Body) + require.NoError(t, err) +}