packer-cn/vendor/github.com/hashicorp/go-getter/netrc.go

68 lines
1.4 KiB
Go

package getter
import (
"fmt"
"net/url"
"os"
"runtime"
"github.com/bgentry/go-netrc/netrc"
"github.com/mitchellh/go-homedir"
)
// addAuthFromNetrc adds auth information to the URL from the user's
// netrc file if it can be found. This will only add the auth info
// if the URL doesn't already have auth info specified and the
// the username is blank.
func addAuthFromNetrc(u *url.URL) error {
// If the URL already has auth information, do nothing
if u.User != nil && u.User.Username() != "" {
return nil
}
// Get the netrc file path
path := os.Getenv("NETRC")
if path == "" {
filename := ".netrc"
if runtime.GOOS == "windows" {
filename = "_netrc"
}
var err error
path, err = homedir.Expand("~/" + filename)
if err != nil {
return err
}
}
// If the file is not a file, then do nothing
if fi, err := os.Stat(path); err != nil {
// File doesn't exist, do nothing
if os.IsNotExist(err) {
return nil
}
// Some other error!
return err
} else if fi.IsDir() {
// File is directory, ignore
return nil
}
// Load up the netrc file
net, err := netrc.ParseFile(path)
if err != nil {
return fmt.Errorf("Error parsing netrc file at %q: %s", path, err)
}
machine := net.FindMachine(u.Host)
if machine == nil {
// Machine not found, no problem
return nil
}
// Set the user info
u.User = url.UserPassword(machine.Login, machine.Password)
return nil
}