1 77918b00 2024-03-07 o package apub
 2 77918b00 2024-03-07 o 
 3 77918b00 2024-03-07 o import (
 4 77918b00 2024-03-07 o 	"fmt"
 5 77918b00 2024-03-07 o 	"net/mail"
 6 77918b00 2024-03-07 o 	"os"
 7 77918b00 2024-03-07 o 	"os/user"
 8 77918b00 2024-03-07 o 	"path"
 9 77918b00 2024-03-07 o 	"strings"
10 77918b00 2024-03-07 o 
11 77918b00 2024-03-07 o 	"webfinger.net/go/webfinger"
12 77918b00 2024-03-07 o )
13 77918b00 2024-03-07 o 
14 77918b00 2024-03-07 o func Finger(address string) (*Actor, error) {
15 77918b00 2024-03-07 o 	jrd, err := webfinger.Lookup(address, nil)
16 77918b00 2024-03-07 o 	if err != nil {
17 77918b00 2024-03-07 o 		return nil, err
18 77918b00 2024-03-07 o 	}
19 77918b00 2024-03-07 o 	for i := range jrd.Links {
20 77918b00 2024-03-07 o 		if jrd.Links[i].Type == ContentType {
21 77918b00 2024-03-07 o 			return LookupActor(jrd.Links[i].Href)
22 77918b00 2024-03-07 o 		}
23 77918b00 2024-03-07 o 	}
24 77918b00 2024-03-07 o 	return nil, ErrNotExist
25 77918b00 2024-03-07 o }
26 77918b00 2024-03-07 o 
27 77918b00 2024-03-07 o func fingerAll(alist []*mail.Address) ([]string, error) {
28 77918b00 2024-03-07 o 	actors := make([]string, len(alist))
29 77918b00 2024-03-07 o 	for i, addr := range alist {
30 77918b00 2024-03-07 o 		if strings.Contains(addr.Address, "+followers") {
31 77918b00 2024-03-07 o 			addr.Address = strings.Replace(addr.Address, "+followers", "", 1)
32 77918b00 2024-03-07 o 			a, err := Finger(addr.Address)
33 77918b00 2024-03-07 o 			if err != nil {
34 77918b00 2024-03-07 o 				return actors, fmt.Errorf("finger %s: %w", addr.Address, err)
35 77918b00 2024-03-07 o 			}
36 77918b00 2024-03-07 o 			actors[i] = a.Followers
37 77918b00 2024-03-07 o 			continue
38 77918b00 2024-03-07 o 		}
39 77918b00 2024-03-07 o 		actor, err := Finger(addr.Address)
40 77918b00 2024-03-07 o 		if err != nil {
41 77918b00 2024-03-07 o 			return actors, fmt.Errorf("finger %s: %w", addr.Address, err)
42 77918b00 2024-03-07 o 		}
43 77918b00 2024-03-07 o 		actors[i] = actor.ID
44 77918b00 2024-03-07 o 	}
45 77918b00 2024-03-07 o 	return actors, nil
46 77918b00 2024-03-07 o }
47 77918b00 2024-03-07 o 
48 77918b00 2024-03-07 o func UserWebFingerFile(username string) (string, error) {
49 77918b00 2024-03-07 o 	u, err := user.Lookup(username)
50 77918b00 2024-03-07 o 	if err != nil {
51 77918b00 2024-03-07 o 		return "", err
52 77918b00 2024-03-07 o 	}
53 77918b00 2024-03-07 o 	if u.HomeDir == "" {
54 77918b00 2024-03-07 o 		return "", fmt.Errorf("no home directory")
55 77918b00 2024-03-07 o 	}
56 77918b00 2024-03-07 o 
57 77918b00 2024-03-07 o 	paths := []string{
58 77918b00 2024-03-07 o 		path.Join(u.HomeDir, "lib/webfinger"),                 // Plan 9
59 77918b00 2024-03-07 o 		path.Join(u.HomeDir, ".config/webfinger"),             // Unix-like
60 77918b00 2024-03-07 o 		path.Join(u.HomeDir, "Application Support/webfinger"), // macOS
61 77918b00 2024-03-07 o 	}
62 77918b00 2024-03-07 o 	for i := range paths {
63 77918b00 2024-03-07 o 		if _, err := os.Stat(paths[i]); err == nil {
64 77918b00 2024-03-07 o 			return paths[i], nil
65 77918b00 2024-03-07 o 		}
66 77918b00 2024-03-07 o 	}
67 77918b00 2024-03-07 o 	return "", fmt.Errorf("no webfinger file")
68 77918b00 2024-03-07 o }