forked from coredns/coredns
/
setup.go
51 lines (42 loc) · 1.01 KB
/
setup.go
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package rewrite
import (
"github.com/coredns/coredns/core/dnsserver"
"github.com/coredns/coredns/plugin"
clog "github.com/coredns/coredns/plugin/pkg/log"
"github.com/mholt/caddy"
)
var log = clog.NewWithPlugin("rewrite")
func init() {
caddy.RegisterPlugin("rewrite", caddy.Plugin{
ServerType: "dns",
Action: setup,
})
}
func setup(c *caddy.Controller) error {
rewrites, err := rewriteParse(c)
if err != nil {
return plugin.Error("rewrite", err)
}
dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler {
return Rewrite{Next: next, Rules: rewrites}
})
return nil
}
func rewriteParse(c *caddy.Controller) ([]Rule, error) {
var rules []Rule
for c.Next() {
args := c.RemainingArgs()
if len(args) < 2 {
// Handles rules out of nested instructions, i.e. the ones enclosed in curly brackets
for c.NextBlock() {
args = append(args, c.Val())
}
}
rule, err := newRule(args...)
if err != nil {
return nil, err
}
rules = append(rules, rule)
}
return rules, nil
}