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// +build testtools
package main
import (
"bufio"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
)
var (
commands = map[string]func(){
"get": fill,
"store": log,
"erase": log,
}
delim = '\n'
credsDir = ""
)
func init() {
if len(credsDir) == 0 {
credsDir = os.Getenv("CREDSDIR")
}
}
func main() {
if argsize := len(os.Args); argsize != 2 {
fmt.Fprintf(os.Stderr, "wrong number of args: %d\n", argsize)
os.Exit(1)
}
arg := os.Args[1]
cmd := commands[arg]
if cmd == nil {
fmt.Fprintf(os.Stderr, "bad cmd: %s\n", arg)
os.Exit(1)
}
cmd()
}
func fill() {
scanner := bufio.NewScanner(os.Stdin)
creds := map[string]string{}
for scanner.Scan() {
line := scanner.Text()
parts := strings.SplitN(line, "=", 2)
if len(parts) != 2 {
fmt.Fprintf(os.Stderr, "bad line: %s\n", line)
os.Exit(1)
}
fmt.Fprintf(os.Stderr, "CREDS RECV: %s\n", line)
creds[parts[0]] = strings.TrimSpace(parts[1])
}
if err := scanner.Err(); err != nil {
fmt.Fprintf(os.Stderr, "reading standard input: %v", err)
os.Exit(1)
}
hostPieces := strings.SplitN(creds["host"], ":", 2)
user, pass, err := credsForHostAndPath(hostPieces[0], creds["path"])
if err != nil {
fmt.Fprintln(os.Stderr, err.Error())
os.Exit(1)
}
if user != "skip" {
if _, ok := creds["username"]; !ok {
creds["username"] = user
}
if _, ok := creds["password"]; !ok {
creds["password"] = pass
}
}
for key, value := range creds {
fmt.Fprintf(os.Stderr, "CREDS SEND: %s=%s\n", key, value)
fmt.Fprintf(os.Stdout, "%s=%s\n", key, value)
}
}
func credsForHostAndPath(host, path string) (string, string, error) {
var hostFilename string
// We need hostFilename to end in a slash so that our credentials all
// end up in the same directory. credsDir will come in from the
// testsuite with a slash, but filepath.Join will strip it off if host
// is empty, such as when we have a file:/// or cert:/// URL.
if host != "" {
hostFilename = filepath.Join(credsDir, host)
} else {
hostFilename = credsDir
}
if len(path) > 0 {
pathFilename := fmt.Sprintf("%s--%s", hostFilename, strings.Replace(path, "/", "-", -1))
u, p, err := credsFromFilename(pathFilename)
if err == nil {
return u, p, err
}
}
return credsFromFilename(hostFilename)
}
func credsFromFilename(file string) (string, string, error) {
userPass, err := ioutil.ReadFile(file)
if err != nil {
return "", "", fmt.Errorf("Error opening %q: %s", file, err)
}
credsPieces := strings.SplitN(strings.TrimSpace(string(userPass)), ":", 2)
if len(credsPieces) != 2 {
return "", "", fmt.Errorf("Invalid data %q while reading %q", string(userPass), file)
}
return credsPieces[0], credsPieces[1], nil
}
func log() {
fmt.Fprintf(os.Stderr, "CREDS received command: %s (ignored)\n", os.Args[1])
}
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