102 lines
2.2 KiB
Go
102 lines
2.2 KiB
Go
package log
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import (
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"ohmydns2/core/dnsserver"
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"ohmydns2/plugin"
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"ohmydns2/plugin/pkg/replacer"
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"ohmydns2/plugin/pkg/response"
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"strings"
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"github.com/coredns/caddy"
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"github.com/miekg/dns"
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)
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func init() { plugin.Register("log", setup) }
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func setup(c *caddy.Controller) error {
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rules, err := logParse(c)
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if err != nil {
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return plugin.Error("log", err)
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}
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dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler {
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return Logger{Next: next, Rules: rules, repl: replacer.New()}
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})
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return nil
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}
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func logParse(c *caddy.Controller) ([]Rule, error) {
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var rules []Rule
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for c.Next() {
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args := c.RemainingArgs()
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length := len(rules)
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switch len(args) {
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case 0:
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// Nothing specified; use defaults
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rules = append(rules, Rule{
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NameScope: ".",
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Format: DefaultLogFormat,
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Class: make(map[response.Class]struct{}),
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})
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case 1:
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rules = append(rules, Rule{
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NameScope: dns.Fqdn(args[0]),
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Format: DefaultLogFormat,
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Class: make(map[response.Class]struct{}),
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})
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default:
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// Name scopes, and maybe a format specified
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format := DefaultLogFormat
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if strings.Contains(args[len(args)-1], "{") {
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format = args[len(args)-1]
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format = strings.Replace(format, "{common}", CommonLogFormat, -1)
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format = strings.Replace(format, "{combined}", CombinedLogFormat, -1)
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args = args[:len(args)-1]
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}
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for _, str := range args {
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rules = append(rules, Rule{
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NameScope: dns.Fqdn(str),
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Format: format,
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Class: make(map[response.Class]struct{}),
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})
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}
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}
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// Class refinements in an extra block.
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classes := make(map[response.Class]struct{})
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for c.NextBlock() {
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switch c.Val() {
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// class followed by combinations of all, denial, error and success.
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case "class":
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classesArgs := c.RemainingArgs()
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if len(classesArgs) == 0 {
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return nil, c.ArgErr()
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}
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for _, c := range classesArgs {
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cls, err := response.ClassFromString(c)
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if err != nil {
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return nil, err
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}
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classes[cls] = struct{}{}
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}
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default:
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return nil, c.ArgErr()
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}
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}
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if len(classes) == 0 {
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classes[response.All] = struct{}{}
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}
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for i := len(rules) - 1; i >= length; i-- {
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rules[i].Class = classes
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}
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}
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return rules, nil
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}
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