neko/internal/config/server.go

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package config
import (
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"path"
"github.com/spf13/cobra"
"github.com/spf13/viper"
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"github.com/demodesk/neko/pkg/utils"
)
type Server struct {
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Cert string
Key string
Bind string
Proxy bool
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Static string
PathPrefix string
PProf bool
Metrics bool
CORS []string
}
func (Server) Init(cmd *cobra.Command) error {
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cmd.PersistentFlags().String("server.bind", "127.0.0.1:8080", "address/port/socket to serve neko")
if err := viper.BindPFlag("server.bind", cmd.PersistentFlags().Lookup("server.bind")); err != nil {
return err
}
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cmd.PersistentFlags().String("server.cert", "", "path to the SSL cert used to secure the neko server")
if err := viper.BindPFlag("server.cert", cmd.PersistentFlags().Lookup("server.cert")); err != nil {
return err
}
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cmd.PersistentFlags().String("server.key", "", "path to the SSL key used to secure the neko server")
if err := viper.BindPFlag("server.key", cmd.PersistentFlags().Lookup("server.key")); err != nil {
return err
}
cmd.PersistentFlags().Bool("server.proxy", false, "trust reverse proxy headers")
if err := viper.BindPFlag("server.proxy", cmd.PersistentFlags().Lookup("server.proxy")); err != nil {
return err
}
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cmd.PersistentFlags().String("server.static", "", "path to neko client files to serve")
if err := viper.BindPFlag("server.static", cmd.PersistentFlags().Lookup("server.static")); err != nil {
return err
}
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cmd.PersistentFlags().String("server.path_prefix", "/", "path prefix for HTTP requests")
if err := viper.BindPFlag("server.path_prefix", cmd.PersistentFlags().Lookup("server.path_prefix")); err != nil {
return err
}
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cmd.PersistentFlags().Bool("server.pprof", false, "enable pprof endpoint available at /debug/pprof")
if err := viper.BindPFlag("server.pprof", cmd.PersistentFlags().Lookup("server.pprof")); err != nil {
return err
}
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cmd.PersistentFlags().Bool("server.metrics", true, "enable prometheus metrics available at /metrics")
if err := viper.BindPFlag("server.metrics", cmd.PersistentFlags().Lookup("server.metrics")); err != nil {
return err
}
cmd.PersistentFlags().StringSlice("server.cors", []string{}, "list of allowed origins for CORS, if empty CORS is disabled, if '*' is present all origins are allowed")
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if err := viper.BindPFlag("server.cors", cmd.PersistentFlags().Lookup("server.cors")); err != nil {
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return err
}
return nil
}
func (s *Server) Set() {
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s.Cert = viper.GetString("server.cert")
s.Key = viper.GetString("server.key")
s.Bind = viper.GetString("server.bind")
s.Proxy = viper.GetBool("server.proxy")
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s.Static = viper.GetString("server.static")
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s.PathPrefix = path.Join("/", path.Clean(viper.GetString("server.path_prefix")))
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s.PProf = viper.GetBool("server.pprof")
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s.Metrics = viper.GetBool("server.metrics")
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s.CORS = viper.GetStringSlice("server.cors")
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in, _ := utils.ArrayIn("*", s.CORS)
if len(s.CORS) == 0 || in {
s.CORS = []string{"*"}
}
}
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func (s *Server) HasCors() bool {
return len(s.CORS) > 0
}
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func (s *Server) AllowOrigin(origin string) bool {
// if CORS is disabled, allow all origins
if len(s.CORS) == 0 {
return true
}
// if CORS is enabled, allow only origins in the list
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in, _ := utils.ArrayIn(origin, s.CORS)
return in || s.CORS[0] == "*"
}