mirror of
https://github.com/caddyserver/caddy.git
synced 2024-12-26 21:53:48 +03:00
127 lines
3.5 KiB
Go
127 lines
3.5 KiB
Go
// Copyright 2015 Matthew Holt and The Caddy Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package encode
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import (
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"strconv"
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"github.com/caddyserver/caddy/v2"
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"github.com/caddyserver/caddy/v2/caddyconfig"
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"github.com/caddyserver/caddy/v2/caddyconfig/caddyfile"
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"github.com/caddyserver/caddy/v2/caddyconfig/httpcaddyfile"
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"github.com/caddyserver/caddy/v2/modules/caddyhttp"
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)
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func init() {
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httpcaddyfile.RegisterHandlerDirective("encode", parseCaddyfile)
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}
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func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
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enc := new(Encode)
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err := enc.UnmarshalCaddyfile(h.Dispenser)
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if err != nil {
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return nil, err
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}
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return enc, nil
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}
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// UnmarshalCaddyfile sets up the handler from Caddyfile tokens. Syntax:
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//
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// encode [<matcher>] <formats...> {
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// gzip [<level>]
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// zstd
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// minimum_length <length>
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// # response matcher block
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// match {
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// status <code...>
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// header <field> [<value>]
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// }
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// # or response matcher single line syntax
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// match [header <field> [<value>]] | [status <code...>]
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// }
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//
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// Specifying the formats on the first line will use those formats' defaults.
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func (enc *Encode) UnmarshalCaddyfile(d *caddyfile.Dispenser) error {
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d.Next() // consume directive name
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prefer := []string{}
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remainingArgs := d.RemainingArgs()
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responseMatchers := make(map[string]caddyhttp.ResponseMatcher)
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for d.NextBlock(0) {
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switch d.Val() {
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case "minimum_length":
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if !d.NextArg() {
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return d.ArgErr()
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}
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minLength, err := strconv.Atoi(d.Val())
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if err != nil {
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return err
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}
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enc.MinLength = minLength
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case "match":
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err := caddyhttp.ParseNamedResponseMatcher(d.NewFromNextSegment(), responseMatchers)
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if err != nil {
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return err
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}
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matcher := responseMatchers["match"]
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enc.Matcher = &matcher
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default:
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name := d.Val()
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modID := "http.encoders." + name
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unm, err := caddyfile.UnmarshalModule(d, modID)
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if err != nil {
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return err
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}
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encoding, ok := unm.(Encoding)
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if !ok {
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return d.Errf("module %s is not an HTTP encoding; is %T", modID, unm)
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}
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if enc.EncodingsRaw == nil {
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enc.EncodingsRaw = make(caddy.ModuleMap)
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}
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enc.EncodingsRaw[name] = caddyconfig.JSON(encoding, nil)
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prefer = append(prefer, name)
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}
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}
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if len(prefer) == 0 && len(remainingArgs) == 0 {
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remainingArgs = []string{"zstd", "gzip"}
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}
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for _, arg := range remainingArgs {
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mod, err := caddy.GetModule("http.encoders." + arg)
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if err != nil {
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return d.Errf("finding encoder module '%s': %v", mod, err)
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}
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encoding, ok := mod.New().(Encoding)
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if !ok {
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return d.Errf("module %s is not an HTTP encoding", mod)
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}
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if enc.EncodingsRaw == nil {
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enc.EncodingsRaw = make(caddy.ModuleMap)
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}
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enc.EncodingsRaw[arg] = caddyconfig.JSON(encoding, nil)
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prefer = append(prefer, arg)
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}
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// use the order in which the encoders were defined.
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enc.Prefer = prefer
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return nil
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}
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// Interface guard
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var _ caddyfile.Unmarshaler = (*Encode)(nil)
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