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feat: setup pwctl bridge with config file and passphrases
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,4 +1,3 @@ | ||
| entrypoint/out/ | ||
| vendor/ | ||
| *~ | ||
| *# | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,30 @@ | ||
| package hypervisor | ||
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| import "math/rand" | ||
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| // from https://stackoverflow.com/questions/22892120/how-to-generate-a-random-string-of-a-fixed-length-in-go | ||
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| const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789" | ||
| const ( | ||
| letterIdxBits = 6 // 6 bits to represent a letter index | ||
| letterIdxMask = 1<<letterIdxBits - 1 // All 1-bits, as many as letterIdxBits | ||
| letterIdxMax = 63 / letterIdxBits // # of letter indices fitting in 63 bits | ||
| ) | ||
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| func randString(n int) string { | ||
| b := make([]byte, n) | ||
| // A rand.Int63() generates 63 random bits, enough for letterIdxMax letters! | ||
| for i, cache, remain := n-1, rand.Int63(), letterIdxMax; i >= 0; { | ||
| if remain == 0 { | ||
| cache, remain = rand.Int63(), letterIdxMax | ||
| } | ||
| if idx := int(cache & letterIdxMask); idx < len(letterBytes) { | ||
| b[i] = letterBytes[idx] | ||
| i-- | ||
| } | ||
| cache >>= letterIdxBits | ||
| remain-- | ||
| } | ||
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| return string(b) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| /out/ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| package main | ||
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| import ( | ||
| "encoding/json" | ||
| "io/ioutil" | ||
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| pwctlconfig "pathwar.pw/pwctl/config" | ||
| ) | ||
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| func getConfig() (*pwctlconfig.Config, error) { | ||
| // load config file | ||
| configJSON, err := ioutil.ReadFile("/pwctl.json") | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| var config pwctlconfig.Config | ||
| if err := json.Unmarshal(configJSON, &config); err != nil { | ||
| return nil, err | ||
| } | ||
| return &config, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| package config | ||
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| import "encoding/json" | ||
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| type Config struct { | ||
| Passphrases []string | ||
| } | ||
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| func (c Config) String() string { | ||
| out, _ := json.Marshal(c) | ||
| return string(out) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| package main | ||
|
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| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "os" | ||
| "os/exec" | ||
| "strings" | ||
| "syscall" | ||
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| "github.com/spf13/cobra" | ||
| "github.com/spf13/viper" | ||
| ) | ||
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| func main() { | ||
| rootCmd := &cobra.Command{ | ||
| Use: os.Args[0], | ||
| } | ||
| rootCmd.PersistentFlags().BoolP("help", "h", false, "print usage") | ||
| rootCmd.PersistentPreRunE = func(cmd *cobra.Command, args []string) error { | ||
| return nil | ||
| } | ||
| rootCmd.AddCommand(&cobra.Command{ | ||
| Use: "entrypoint", | ||
| Args: cobra.MinimumNArgs(1), | ||
| RunE: func(cmd *cobra.Command, args []string) error { | ||
| // FIXME: prepare the level | ||
| // FIXME: add a self-destruct mode that allow having root access only at runtime | ||
| // FIXME: lock to block other commands | ||
| binary, err := exec.LookPath(args[0]) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| env := os.Environ() | ||
| if err := syscall.Exec(binary, args, env); err != nil { | ||
| return err | ||
| } | ||
| return nil | ||
| }, | ||
| }) | ||
| rootCmd.AddCommand(&cobra.Command{ | ||
| Use: "env", | ||
| RunE: func(cmd *cobra.Command, args []string) error { | ||
| for _, line := range os.Environ() { | ||
| fmt.Println(line) | ||
| } | ||
| return nil | ||
| }, | ||
| }) | ||
| rootCmd.AddCommand(&cobra.Command{ | ||
| Use: "config", | ||
| RunE: func(cmd *cobra.Command, args []string) error { | ||
| config, err := getConfig() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| out, _ := json.Marshal(config) | ||
| fmt.Println(string(out)) | ||
| return nil | ||
| }, | ||
| }) | ||
| rootCmd.AddCommand(&cobra.Command{ | ||
| Use: "passphrase", | ||
| RunE: func(cmd *cobra.Command, args []string) error { | ||
| config, err := getConfig() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| // FIXME: parse index from CLI | ||
| fmt.Println(config.Passphrases[0]) | ||
| return nil | ||
| }, | ||
| }) | ||
| args := os.Args[1:] | ||
| if args[0] == "entrypoint" && len(args) > 1 && args[1] != "--" { | ||
| args = append([]string{"entrypoint", "--"}, args[1:]...) | ||
| } | ||
| rootCmd.SetArgs(args) | ||
| viper.AutomaticEnv() | ||
| viper.SetEnvKeyReplacer(strings.NewReplacer("-", "_")) | ||
| if err := rootCmd.Execute(); err != nil { | ||
| _, _ = fmt.Fprintf(os.Stderr, "%v\n", err) | ||
| os.Exit(1) | ||
| } | ||
| } |