142 lines
3.3 KiB
Go
142 lines
3.3 KiB
Go
package cli
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import (
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"fmt"
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"io"
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"log"
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"os"
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"runtime"
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"strconv"
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"termtap.dev/internal/app"
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"termtap.dev/internal/model"
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"termtap.dev/internal/proxy"
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"termtap.dev/internal/tui"
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)
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// This should be configurable at some point, just in case they build on 8080
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const proxy_addr = "127.0.0.1:8080"
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var fatalExit = log.Fatalln
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var stdoutWriter io.Writer = stdioRef{isErr: false}
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var stderrWriter io.Writer = stdioRef{isErr: true}
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var startSessionFn = app.StartSession
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var runTUIFn = tui.Run
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type stdioRef struct {
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isErr bool
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}
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func (w stdioRef) Write(p []byte) (int, error) {
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if w.isErr {
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return os.Stderr.Write(p)
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}
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return os.Stdout.Write(p)
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}
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func Run(args []string) {
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if len(args) >= 2 && args[1] == "cert" {
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runCert()
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return
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}
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if len(args) >= 2 && args[1] == "demo" {
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runDemo()
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return
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}
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cmd, ok := parseCommand(args)
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if !ok {
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displayHelp()
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return
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}
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session, err := startSessionFn(cmd, proxy_addr)
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if err != nil {
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fatalExit(err)
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return
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}
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defer session.Stop()
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controls := tui.Controls{
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Restart: session.RestartProcess,
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}
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if err := runTUIFn(session.Events, controls); err != nil {
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fatalExit(err)
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return
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}
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}
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func parseCommand(args []string) (model.Command, bool) {
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if len(args) < 4 {
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return model.Command{}, false
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}
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if args[1] != "run" || args[2] != "--" {
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return model.Command{}, false
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}
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args = args[3:]
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if len(args) == 1 {
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return model.Command{Name: args[0], Args: []string{}}, true
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}
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return model.Command{Name: args[0], Args: args[1:]}, true
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}
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func displayHelp() {
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helpText := `
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usage:
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tap demo
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tap cert
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tap run -- <command> [args...]
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`
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fmt.Fprintln(stderrWriter, helpText)
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}
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func runCert() {
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ca, err := proxy.EnsureCertificateAuthority()
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if err != nil {
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fatalExit(err)
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return
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}
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certPath := ca.CertPath()
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quotedCertPath := strconv.Quote(certPath)
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fmt.Fprintf(stdoutWriter, "Certificate path: %s\n", certPath)
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if ca.WasCreated() {
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fmt.Fprintln(stdoutWriter, "Created a new local HTTPS interception CA.")
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} else {
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fmt.Fprintln(stdoutWriter, "Using existing local HTTPS interception CA.")
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}
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trusted, err := ca.IsTrustedBySystem()
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if err != nil {
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fmt.Fprintf(stdoutWriter, "System trust check failed: %v\n", err)
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} else if trusted {
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fmt.Fprintln(stdoutWriter, "System trust store: trusted")
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} else {
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fmt.Fprintln(stdoutWriter, "System trust store: not trusted")
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}
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if runtime.GOOS != "linux" {
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fmt.Fprintln(stdoutWriter, "Install this certificate into your OS or client trust store to inspect HTTPS traffic.")
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return
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}
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fmt.Fprintln(stdoutWriter)
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fmt.Fprintln(stdoutWriter, "Trust instructions (Linux):")
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fmt.Fprintln(stdoutWriter, "Debian/Ubuntu:")
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fmt.Fprintf(stdoutWriter, " sudo cp %s /usr/local/share/ca-certificates/termtap.crt\n", quotedCertPath)
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fmt.Fprintln(stdoutWriter, " sudo update-ca-certificates")
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fmt.Fprintln(stdoutWriter, "Fedora/RHEL/CentOS:")
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fmt.Fprintf(stdoutWriter, " sudo cp %s /etc/pki/ca-trust/source/anchors/termtap.crt\n", quotedCertPath)
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fmt.Fprintln(stdoutWriter, " sudo update-ca-trust")
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fmt.Fprintln(stdoutWriter, "Arch:")
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fmt.Fprintf(stdoutWriter, " sudo trust anchor %s\n", quotedCertPath)
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fmt.Fprintln(stdoutWriter)
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fmt.Fprintln(stdoutWriter, "Quick curl test:")
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fmt.Fprintf(stdoutWriter, " curl --proxy http://%s --cacert %s https://example.com\n", proxy_addr, quotedCertPath)
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}
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