mirror of
https://github.com/caddyserver/caddy.git
synced 2024-12-27 22:23:48 +03:00
82 lines
2 KiB
Go
82 lines
2 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 caddycmd
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import (
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"bytes"
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"flag"
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"net"
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"os"
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)
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// Main executes the main function of the caddy command.
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func Main() {
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if len(os.Args) <= 1 {
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fmt.Println(usageString())
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return
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}
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subcommand, ok := commands[os.Args[1]]
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if !ok {
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fmt.Printf("%q is not a valid command\n", os.Args[1])
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os.Exit(2)
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}
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if exitCode, err := subcommand(); err != nil {
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log.Println(err)
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os.Exit(exitCode)
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}
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}
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// commandFunc is a function that executes
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// a subcommand. It returns an exit code and
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// any associated error.
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type commandFunc func() (int, error)
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var commands = map[string]commandFunc{
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"start": cmdStart,
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"run": cmdRun,
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"stop": cmdStop,
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"reload": cmdReload,
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"version": cmdVersion,
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"list-modules": cmdListModules,
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"environ": cmdEnviron,
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}
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func usageString() string {
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buf := new(bytes.Buffer)
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buf.WriteString("usage: caddy <command> [<args>]")
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flag.CommandLine.SetOutput(buf)
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flag.CommandLine.PrintDefaults()
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return buf.String()
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}
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// handlePingbackConn reads from conn and ensures it matches
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// the bytes in expect, or returns an error if it doesn't.
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func handlePingbackConn(conn net.Conn, expect []byte) error {
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defer conn.Close()
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confirmationBytes, err := ioutil.ReadAll(io.LimitReader(conn, 32))
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if err != nil {
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return err
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}
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if !bytes.Equal(confirmationBytes, expect) {
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return fmt.Errorf("wrong confirmation: %x", confirmationBytes)
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}
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return nil
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}
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