ceph-csi/pkg/util/stripsecrets.go
ShyamsundarR bd204d7d45 Use --keyfile option to pass keys to all Ceph CLIs
Every Ceph CLI that is invoked at present passes the key via the
--key option, and hence is exposed to key being displayed on
the host using a ps command or such means.

This commit addresses this issue by stashing the key in a tmp
file, which is again created on a tmpfs (or empty dir backed by
memory). Further using such tmp files as arguments to the --keyfile
option for every CLI that is invoked.

This prevents the key from being visible as part of the argument list
of the invoked program on the system.

Fixes: #318

Signed-off-by: ShyamsundarR <srangana@redhat.com>
2019-07-25 12:46:15 +00:00

84 lines
1.8 KiB
Go

/*
Copyright 2019 The Ceph-CSI 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 util
import (
"strings"
)
const (
keyArg = "--key="
keyFileArg = "--keyfile="
secretArg = "secret="
optionsArgSeparator = ','
strippedKey = "--key=***stripped***"
strippedKeyFile = "--keyfile=***stripped***"
strippedSecret = "secret=***stripped***"
)
// StripSecretInArgs strips values of either "--key"/"--keyfile" or "secret=".
// `args` is left unchanged.
// Expects only one occurrence of either "--key"/"--keyfile" or "secret=".
func StripSecretInArgs(args []string) []string {
out := make([]string, len(args))
copy(out, args)
if !stripKey(out) {
stripSecret(out)
}
return out
}
func stripKey(out []string) bool {
for i := range out {
if strings.HasPrefix(out[i], keyArg) {
out[i] = strippedKey
return true
}
if strings.HasPrefix(out[i], keyFileArg) {
out[i] = strippedKeyFile
return true
}
}
return false
}
func stripSecret(out []string) bool {
for i := range out {
arg := out[i]
begin := strings.Index(arg, secretArg)
if begin == -1 {
continue
}
end := strings.IndexByte(arg[begin+len(secretArg):], optionsArgSeparator)
out[i] = arg[:begin] + strippedSecret
if end != -1 {
out[i] += arg[end+len(secretArg):]
}
return true
}
return false
}