d9b9a955ba
Log and returns an error when the name rewrite creates a name that is illegal. Add test in name_test.go to see if an error is returned. Possible followup could be the only check this if a name-rewrite is done. Fixes: #1638 Signed-off-by: Miek Gieben <miek@miek.nl>
51 lines
1 KiB
Go
51 lines
1 KiB
Go
package rewrite
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import (
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"github.com/coredns/coredns/core/dnsserver"
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"github.com/coredns/coredns/plugin"
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clog "github.com/coredns/coredns/plugin/pkg/log"
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"github.com/mholt/caddy"
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)
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var log = clog.NewWithPlugin("rewrite")
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func init() {
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caddy.RegisterPlugin("rewrite", caddy.Plugin{
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ServerType: "dns",
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Action: setup,
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})
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}
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func setup(c *caddy.Controller) error {
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rewrites, err := rewriteParse(c)
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if err != nil {
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return plugin.Error("rewrite", err)
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}
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dnsserver.GetConfig(c).AddPlugin(func(next plugin.Handler) plugin.Handler {
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return Rewrite{Next: next, Rules: rewrites}
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})
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return nil
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}
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func rewriteParse(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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if len(args) < 2 {
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// Handles rules out of nested instructions, i.e. the ones enclosed in curly brackets
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for c.NextBlock() {
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args = append(args, c.Val())
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}
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}
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rule, err := newRule(args...)
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if err != nil {
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return nil, err
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}
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rules = append(rules, rule)
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}
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return rules, nil
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}
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