72 lines
1.3 KiB
Go
72 lines
1.3 KiB
Go
package pgpass
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import (
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"bufio"
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"os"
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"path/filepath"
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"strings"
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"github.com/lib/pq/internal/pqutil"
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)
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func PasswordFromPgpass(passfile, user, password, host, port, dbname string, passwordSet bool) string {
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// Do not process .pgpass if a password was supplied.
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if passwordSet {
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return password
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}
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filename := pqutil.Pgpass(passfile)
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if filename == "" {
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return ""
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}
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fp, err := os.Open(filename)
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if err != nil {
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return ""
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}
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defer fp.Close()
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scan := bufio.NewScanner(fp)
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for scan.Scan() {
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line := scan.Text()
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if len(line) == 0 || line[0] == '#' {
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continue
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}
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split := splitFields(line)
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if len(split) != 5 {
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continue
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}
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socket := host == "" || filepath.IsAbs(host) || strings.HasPrefix(host, "@")
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if (split[0] == "*" || split[0] == host || (split[0] == "localhost" && socket)) &&
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(split[1] == "*" || split[1] == port) &&
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(split[2] == "*" || split[2] == dbname) &&
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(split[3] == "*" || split[3] == user) {
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return split[4]
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}
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}
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return ""
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}
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func splitFields(s string) []string {
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var (
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fs = make([]string, 0, 5)
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f = make([]rune, 0, len(s))
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esc bool
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)
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for _, c := range s {
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switch {
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case esc:
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f, esc = append(f, c), false
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case c == '\\':
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esc = true
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case c == ':':
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fs, f = append(fs, string(f)), f[:0]
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default:
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f = append(f, c)
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}
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}
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return append(fs, string(f))
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}
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