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Code Issues Releases Activity

FEATURE: --creds can refer to a command line to execute in addition to a file or script (#1521)

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* Allow commands for creds file & refactoring

* Minor fix

* Add shell command ability to docs

Signed-off-by: Jan-Philipp Benecke <jan-philipp.benecke@jpbe.de>

Co-authored-by: Tom Limoncelli <tlimoncelli@stackoverflow.com>
This commit is contained in:
Jan-Philipp Benecke
2022-06-06 20:37:45 +02:00
committed by GitHub
parent 31a279b82c
commit cfa104858d
4 changed files with 45 additions and 22 deletions
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40
pkg/credsfile/providerConfig.go
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@@ -6,6 +6,7 @@ package credsfile
import (
"encoding/json"
"errors"
"fmt"
"os"
"os/exec"
@@ -14,6 +15,7 @@ import (
"github.com/DisposaBoy/JsonConfigReader"
"github.com/TomOnTime/utfutil"
"github.com/google/shlex"
)
func quotedList(l []string) string {
@@ -39,24 +41,14 @@ func LoadProviderConfigs(fname string) (map[string]map[string]string, error) {
var dat []byte
var err error
filesIsExecutable := strings.HasPrefix(fname, "!") || isExecutable(fname)
if strings.HasPrefix(fname, "!") {
if filesIsExecutable && !strings.HasSuffix(fname, ".json") {
// file is executable and is not a .json (needed because in Windows WSL all files are executable).
dat, err = executeCredsFile(strings.TrimPrefix(fname, "!"))
if err != nil {
return nil, err
}
} else if strings.HasSuffix(fname, ".json") {
// .json files are never executable (needed because in Windows WSL
// all files are executable).
dat, err = readCredsFile(fname)
if err != nil {
return nil, err
}
} else if isExecutable(fname) {
dat, err = executeCredsFile(fname)
if err != nil {
return nil, err
}
} else {
// no executable bit found nor marked as executable so read it in
dat, err = readCredsFile(fname)
@@ -111,13 +103,23 @@ func readCredsFile(filename string) ([]byte, error) {
}
func executeCredsFile(filename string) ([]byte, error) {
cmd := filename
if !strings.HasPrefix(filename, "/") {
// if the path doesn't start with `/` make sure we aren't relying on $PATH.
cmd = strings.Join([]string{".", filename}, string(filepath.Separator))
cmd, err := shlex.Split(filename)
if err != nil {
return nil, err
}
out, err := exec.Command(cmd).Output()
return out, err
command := cmd[0]
// check if this is a file and not a command when there is no leading /
if fileExists(command) && !strings.HasPrefix(command, "/") {
command = strings.Join([]string{".", command}, string(filepath.Separator))
}
return exec.Command(command, cmd[1:]...).Output()
}
func fileExists(filename string) bool {
_, err := os.Stat(filename)
return !errors.Is(err, os.ErrNotExist)
}
func replaceEnvVars(m map[string]map[string]string) error {