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This does leak fds as the logging target never gets closed, this has to be fixed before release but this will work for now.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "io" | ||
| "net/url" | ||
| "os" | ||
| "time" | ||
|
|
||
| "github.com/rs/zerolog" | ||
| "gopkg.in/yaml.v3" | ||
|
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| "github.com/corazawaf/coraza-spoa/internal" | ||
| ) | ||
|
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| func readConfig() (*config, error) { | ||
| open, err := os.Open(configPath) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| d := yaml.NewDecoder(open) | ||
| d.KnownFields(true) | ||
|
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| var cfg config | ||
| if err := d.Decode(&cfg); err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| if len(cfg.Applications) == 0 { | ||
| globalLogger.Warn().Msg("no applications defined") | ||
| } | ||
|
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| return &cfg, nil | ||
| } | ||
|
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| type config struct { | ||
| Bind string `yaml:"bind"` | ||
| Log logConfig `yaml:",inline"` | ||
| Applications []struct { | ||
| Log logConfig `yaml:",inline"` | ||
| Name string `yaml:"name"` | ||
| Directives string `yaml:"directives"` | ||
| ResponseCheck bool `yaml:"response_check"` | ||
| TransactionTTLMS int `yaml:"transaction_ttl_ms"` | ||
| TransactionActiveLimit int `yaml:"transaction_active_limit"` | ||
| TransactionActiveLimitReject bool `yaml:"transaction_active_limit_reject"` | ||
| } `yaml:"applications"` | ||
| } | ||
|
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| func (c config) networkAddressFromBind() (network string, address string) { | ||
| bindUrl, err := url.Parse(c.Bind) | ||
| if err == nil { | ||
| return bindUrl.Scheme, bindUrl.Path | ||
| } | ||
|
|
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| return "tcp", c.Bind | ||
| } | ||
|
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| func (c config) newApplications() (map[string]*internal.Application, error) { | ||
| allApps := make(map[string]*internal.Application) | ||
|
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| for name, a := range c.Applications { | ||
| logger, err := a.Log.newLogger() | ||
| if err != nil { | ||
| return nil, fmt.Errorf("creating logger for application %q: %v", name, err) | ||
| } | ||
|
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| appConfig := internal.AppConfig{ | ||
| Logger: logger, | ||
| Directives: a.Directives, | ||
| ResponseCheck: a.ResponseCheck, | ||
| TransactionTTLMS: time.Duration(a.TransactionTTLMS) * time.Millisecond, | ||
| } | ||
|
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| application, err := appConfig.NewApplication() | ||
| if err != nil { | ||
| return nil, fmt.Errorf("initializing application %q: %v", name, err) | ||
| } | ||
|
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| allApps[a.Name] = application | ||
| } | ||
|
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| return allApps, nil | ||
| } | ||
|
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| type logConfig struct { | ||
| Level string `yaml:"log_level"` | ||
| File string `yaml:"log_file"` | ||
| Format string `yaml:"log_format"` | ||
| } | ||
|
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| func (lc logConfig) outputWriter() (io.Writer, error) { | ||
| var out io.Writer | ||
| if lc.File == "" || lc.File == "/dev/stdout" { | ||
| out = os.Stdout | ||
| } else if lc.File == "/dev/stderr" { | ||
| out = os.Stderr | ||
| } else if lc.File == "/dev/null" { | ||
| out = io.Discard | ||
| } else { | ||
| // TODO: Close the handle if not used anymore. | ||
| // Currently these are leaked as soon as we reload. | ||
| f, err := os.OpenFile(lc.File, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| out = f | ||
| } | ||
| return out, nil | ||
| } | ||
|
|
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| func (lc logConfig) newLogger() (zerolog.Logger, error) { | ||
| out, err := lc.outputWriter() | ||
| if err != nil { | ||
| return globalLogger, err | ||
| } | ||
|
|
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| switch lc.Format { | ||
| case "console": | ||
| out = zerolog.ConsoleWriter{ | ||
| Out: out, | ||
| } | ||
| case "json": | ||
| default: | ||
| return globalLogger, fmt.Errorf("unknown log format: %v", lc.Format) | ||
| } | ||
|
|
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| if lc.Level == "" { | ||
| lc.Level = "info" | ||
| } | ||
| lvl, err := zerolog.ParseLevel(lc.Level) | ||
| if err != nil { | ||
| return globalLogger, err | ||
| } | ||
|
|
||
| return zerolog.New(out).Level(lvl).With().Timestamp().Logger(), nil | ||
| } |
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