mirror of
https://github.com/nkanaev/yarr.git
synced 2026-06-24 17:15:17 +00:00
92 lines
2.3 KiB
Go
92 lines
2.3 KiB
Go
package pqutil
|
||
|
||
import (
|
||
"errors"
|
||
"fmt"
|
||
"io"
|
||
"os"
|
||
"os/user"
|
||
"path/filepath"
|
||
"runtime"
|
||
"syscall"
|
||
)
|
||
|
||
// Home gets the PostgreSQL configuration dir in the user's home directory:
|
||
// %APPDATA%/postgresql on Windows, and $HOME/.postgresql/postgresql.crt
|
||
// everywhere else.
|
||
//
|
||
// Returns an empy string if no home directory was found.
|
||
//
|
||
// Matches pqGetHomeDirectory() from PostgreSQL.
|
||
// https://github.com/postgres/postgres/blob/2b117bb/src/interfaces/libpq/fe-connect.c#L8214
|
||
func Home(subdir bool) string {
|
||
if runtime.GOOS == "windows" {
|
||
// pq uses SHGetFolderPath(), which is deprecated but x/sys/windows has
|
||
// KnownFolderPath(). We don't really want to pull that in though, so
|
||
// use APPDATA env. This is also what PostgreSQL uses in some other
|
||
// codepaths (get_home_path() for example).
|
||
ad := os.Getenv("APPDATA")
|
||
if ad == "" {
|
||
return ""
|
||
}
|
||
return filepath.Join(ad, "postgresql")
|
||
}
|
||
|
||
home, _ := os.UserHomeDir()
|
||
if home == "" {
|
||
u, err := user.Current()
|
||
if err != nil {
|
||
return ""
|
||
}
|
||
home = u.HomeDir
|
||
}
|
||
// libpq reads some files from ~/ and some from ~/.postgresql – on Windows
|
||
// it always uses %APPDATA%/postgresql.
|
||
if subdir {
|
||
home = filepath.Join(home, ".postgresql")
|
||
}
|
||
return home
|
||
}
|
||
|
||
// ErrNotExists reports if err is a "path doesn't exist" type error.
|
||
//
|
||
// fs.ErrNotExist is not enough, as "/dev/null/somefile" will return ENOTDIR
|
||
// instead of ENOENT.
|
||
func ErrNotExists(err error) bool {
|
||
perr := new(os.PathError)
|
||
if errors.As(err, &perr) && (perr.Err == syscall.ENOENT || perr.Err == syscall.ENOTDIR) {
|
||
return true
|
||
}
|
||
return false
|
||
}
|
||
|
||
var WarnFD io.Writer = os.Stderr
|
||
|
||
// Pgpass gets the filepath to the pgpass file to use, returning "" if a pgpass
|
||
// file shouldn't be used.
|
||
func Pgpass(passfile string) string {
|
||
// Get passfile from the options.
|
||
if passfile == "" {
|
||
home := Home(false)
|
||
if home == "" {
|
||
return ""
|
||
}
|
||
passfile = filepath.Join(home, ".pgpass")
|
||
}
|
||
|
||
// On Win32, the directory is protected, so we don't have to check the file.
|
||
if runtime.GOOS != "windows" {
|
||
fi, err := os.Stat(passfile)
|
||
if err != nil {
|
||
return ""
|
||
}
|
||
if fi.Mode().Perm()&(0x77) != 0 {
|
||
fmt.Fprintf(WarnFD,
|
||
"WARNING: password file %q has group or world access; permissions should be u=rw (0600) or less\n",
|
||
passfile)
|
||
return ""
|
||
}
|
||
}
|
||
return passfile
|
||
}
|