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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,60 +1,20 @@ | ||
| package worker | ||
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| import ( | ||
| "os" | ||
| "path/filepath" | ||
| "time" | ||
|
|
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| "github.com/natsukagami/kjudge/worker/sandbox" | ||
| "github.com/natsukagami/kjudge/worker/sandbox/isolate" | ||
| "github.com/natsukagami/kjudge/worker/sandbox/raw" | ||
| "github.com/pkg/errors" | ||
| ) | ||
|
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| // Sandbox provides a way to run an arbitary command | ||
| // within a sandbox, with configured input/outputs and | ||
| // proper time and memory limits. | ||
| // | ||
| // kjudge currently implements two sandboxes, "isolate" (which requires "github.com/ioi/isolate" to be available) | ||
| // and "raw" (NOT RECOMMENDED, RUN AT YOUR OWN RISK). | ||
| // Which sandbox is used can be set at runtime with a command-line switch. | ||
| type Sandbox interface { | ||
| Run(*SandboxInput) (*SandboxOutput, error) | ||
| } | ||
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| // SandboxInput is the input to a sandbox. | ||
| type SandboxInput struct { | ||
| Command string `json:"command"` // The passed command | ||
| Args []string `json:"args"` // any additional arguments, if needed | ||
| Files map[string][]byte `json:"files"` // Any additional files needed | ||
| TimeLimit time.Duration `json:"time_limit"` // The given time-limit | ||
| MemoryLimit int `json:"memory_limit"` // in KBs | ||
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| CompiledSource []byte `json:"compiled_source"` // Should be written down to the CWD as a file named "code", as the command expects | ||
| Input []byte `json:"input"` | ||
| } | ||
|
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| // SandboxOutput is the output which the sandbox needs to give back. | ||
| type SandboxOutput struct { | ||
| Success bool `json:"success"` // Whether the command exited zero. | ||
| RunningTime time.Duration `json:"running_time"` // The running time of the command. | ||
| MemoryUsed int `json:"memory_used"` // in KBs | ||
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| Stdout []byte `json:"stdout"` | ||
| Stderr []byte `json:"stderr"` | ||
| ErrorMessage string `json:"error_message,omitempty"` | ||
| } | ||
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| // CopyTo copies all the files it contains into cwd. | ||
| func (input *SandboxInput) CopyTo(cwd string) error { | ||
| // Copy all the files into "cwd" | ||
| for name, file := range input.Files { | ||
| if err := os.WriteFile(filepath.Join(cwd, name), file, 0666); err != nil { | ||
| return errors.Wrapf(err, "writing file %s", name) | ||
| } | ||
| } | ||
| // Copy and set chmod the "code" file | ||
| if input.CompiledSource != nil { | ||
| if err := os.WriteFile(filepath.Join(cwd, "code"), input.CompiledSource, 0777); err != nil { | ||
| return errors.WithStack(err) | ||
| } | ||
| func NewSandbox(name string, options ...sandbox.Option) (sandbox.Runner, error) { | ||
| setting := sandbox.MakeSettings(options...) | ||
| switch name { | ||
| case "raw": | ||
| return raw.New(setting), nil | ||
| case "isolate": | ||
| return isolate.New(setting), nil | ||
| default: | ||
| return nil, errors.Errorf("Sandbox %s doesn't exists or not yet implemented.", name) | ||
| } | ||
| return nil | ||
| } |
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