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google-labs-jules[bot]
86720090b6
This change adds GoDoc comments to many of the public symbols in the `pkg/` directory. It also includes various improvements to the documentation in `README.md` and other markdown files in the `docs/` directory. This is a partial documentation effort, as requested by the user, to get a pull request submitted quickly. Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>
54 lines
1.1 KiB
Go
54 lines
1.1 KiB
Go
package pwgen
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import (
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"fmt"
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"os"
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"os/exec"
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"strconv"
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"strings"
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shellquote "github.com/kballard/go-shellquote"
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)
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var (
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// ErrNoExternal is returned when no external generator is set.
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ErrNoExternal = fmt.Errorf("no external generator")
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// ErrNoCommand is returned when no command is set.
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ErrNoCommand = fmt.Errorf("no command")
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)
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// GenerateExternal will invoke an external password generator,
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// if set, and return its output.
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// The external generator is configured via the GOPASS_EXTERNAL_PWGEN environment variable.
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func GenerateExternal(pwlen int) (string, error) {
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c := os.Getenv("GOPASS_EXTERNAL_PWGEN")
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if c == "" {
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return "", ErrNoExternal
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}
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cmdArgs, err := shellquote.Split(c)
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if err != nil {
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return "", fmt.Errorf("failed to split %s: %w", c, err)
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}
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if len(cmdArgs) < 1 {
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return "", ErrNoCommand
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}
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exe := cmdArgs[0]
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args := []string{}
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if len(cmdArgs) > 1 {
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args = cmdArgs[1:]
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}
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args = append(args, strconv.Itoa(pwlen))
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out, err := exec.Command(exe, args...).Output()
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if err != nil {
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return "", fmt.Errorf("failed to execute %s %v: %w", exe, args, err)
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}
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return strings.TrimSpace(string(out)), nil
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}
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