mirror of
https://github.com/caddyserver/caddy.git
synced 2024-12-14 07:13:50 +08:00
57 lines
2.1 KiB
Go
57 lines
2.1 KiB
Go
// Copyright 2015 Matthew Holt and The Caddy Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package internal
|
|
|
|
import (
|
|
"fmt"
|
|
"io/fs"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
// SplitUnixSocketPermissionsBits takes a unix socket address in the
|
|
// unusual "path|bits" format (e.g. /run/caddy.sock|0222) and tries
|
|
// to split it into socket path (host) and permissions bits (port).
|
|
// Colons (":") can't be used as separator, as socket paths on Windows
|
|
// may include a drive letter (e.g. `unix/c:\absolute\path.sock`).
|
|
// Permission bits will default to 0200 if none are specified.
|
|
// Throws an error, if the first carrying bit does not
|
|
// include write perms (e.g. `0422` or `022`).
|
|
// Symbolic permission representation (e.g. `u=w,g=w,o=w`)
|
|
// is not supported and will throw an error for now!
|
|
func SplitUnixSocketPermissionsBits(addr string) (path string, fileMode fs.FileMode, err error) {
|
|
addrSplit := strings.SplitN(addr, "|", 2)
|
|
|
|
if len(addrSplit) == 2 {
|
|
// parse octal permission bit string as uint32
|
|
fileModeUInt64, err := strconv.ParseUint(addrSplit[1], 8, 32)
|
|
if err != nil {
|
|
return "", 0, fmt.Errorf("could not parse octal permission bits in %s: %v", addr, err)
|
|
}
|
|
fileMode = fs.FileMode(fileModeUInt64)
|
|
|
|
// FileMode.String() returns a string like `-rwxr-xr--` for `u=rwx,g=rx,o=r` (`0754`)
|
|
if string(fileMode.String()[2]) != "w" {
|
|
return "", 0, fmt.Errorf("owner of the socket requires '-w-' (write, octal: '2') permissions at least; got '%s' in %s", fileMode.String()[1:4], addr)
|
|
}
|
|
|
|
return addrSplit[0], fileMode, nil
|
|
}
|
|
|
|
// default to 0200 (symbolic: `u=w,g=,o=`)
|
|
// if no permission bits are specified
|
|
return addr, 0o200, nil
|
|
}
|