mirror of
https://github.com/caddyserver/caddy.git
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105 lines
2.6 KiB
Go
105 lines
2.6 KiB
Go
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// 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 caddyauth
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import (
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"encoding/base64"
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"encoding/json"
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"github.com/caddyserver/caddy/v2/caddyconfig"
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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("basicauth", parseCaddyfile)
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}
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// parseCaddyfile sets up the handler from Caddyfile tokens. Syntax:
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//
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// basicauth [<matcher>] [<hash_algorithm>] {
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// <username> <hashed_password_base64> [<salt_base64>]
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// ...
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// }
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//
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// If no hash algorithm is supplied, bcrypt will be assumed.
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func parseCaddyfile(h httpcaddyfile.Helper) (caddyhttp.MiddlewareHandler, error) {
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var ba HTTPBasicAuth
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for h.Next() {
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var cmp Comparer
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args := h.RemainingArgs()
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var hashName string
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switch len(args) {
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case 0:
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hashName = "bcrypt"
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case 1:
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hashName = args[0]
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default:
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return nil, h.ArgErr()
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}
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switch hashName {
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case "bcrypt":
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cmp = BcryptHash{}
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case "scrypt":
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cmp = ScryptHash{}
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default:
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return nil, h.Errf("unrecognized hash algorithm: %s", hashName)
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}
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ba.HashRaw = caddyconfig.JSONModuleObject(cmp, "algorithm", hashName, nil)
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for h.NextBlock(0) {
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username := h.Val()
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var b64Pwd, b64Salt string
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h.Args(&b64Pwd, &b64Salt)
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if h.NextArg() {
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return nil, h.ArgErr()
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}
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if username == "" || b64Pwd == "" {
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return nil, h.Err("username and password cannot be empty or missing")
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}
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pwd, err := base64.StdEncoding.DecodeString(b64Pwd)
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if err != nil {
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return nil, h.Errf("decoding password: %v", err)
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}
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var salt []byte
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if b64Salt != "" {
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salt, err = base64.StdEncoding.DecodeString(b64Salt)
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if err != nil {
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return nil, h.Errf("decoding salt: %v", err)
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}
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}
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ba.AccountList = append(ba.AccountList, Account{
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Username: username,
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Password: pwd,
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Salt: salt,
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})
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}
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}
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return Authentication{
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ProvidersRaw: map[string]json.RawMessage{
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"http_basic": caddyconfig.JSON(ba, nil),
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},
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}, nil
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}
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