1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9
10. 10
11. 11
12. 12
13. 13
14. 14
15. 15
16. 16
17. 17
18. 18
19. 19
20. 20
21. 21
22. 22
23. 23
24. 24
25. 25
26. 26
27. 27
28. 28
29. 29
30. 30
31. 31
32. 32
33. 33
34. 34
35. 35
36. 36
37. 37
38. 38
39. 39
40. 40
41. 41
42. 42
43. 43
44. 44
45. 45
46. 46
47. 47
48. 48
49. 49
50. 50
51. 51
52. 52
53. 53
54. 54
55. 55
56. 56
57. 57
58. 58
59. 59
60. 60
61. 61
62. 62
63. 63
64. 64
65. 65
66. 66
67. 67
68. 68
69. 69
70. 70
71. 71
72. 72
73. 73
74. 74
75. 75
76. 76
77. 77
78. 78
79. 79
80. 80
81. 81
82. 82
83. 83
84. 84
85. 85
86. 86
87. 87
88. 88
89. 89
90. 90
91. 91
92. 92

// Copyright 2023 The Forgejo Authors. All rights reserved.
// SPDX-License-Identifier: MIT

package activitypub

import (
	"net/http"
	"strconv"

	repo_model "code.gitea.io/gitea/models/repo"
	user_model "code.gitea.io/gitea/models/user"
	"code.gitea.io/gitea/modules/context"
	"code.gitea.io/gitea/modules/forgefed"
	"code.gitea.io/gitea/modules/setting"
	"code.gitea.io/gitea/services/activitypub"

	ap "github.com/go-ap/activitypub"
)

// Fetch and load a remote object
func AuthorizeInteraction(ctx *context.Context) {
	resp, err := activitypub.Fetch(ctx.Req.URL.Query().Get("uri"))
	if err != nil {
		ctx.ServerError("Fetch", err)
		return
	}

	ap.ItemTyperFunc = forgefed.GetItemByType
	ap.JSONItemUnmarshal = forgefed.JSONUnmarshalerFn
	ap.IsNotEmpty = forgefed.NotEmpty
	object, err := ap.UnmarshalJSON(resp)
	if err != nil {
		ctx.ServerError("UnmarshalJSON", err)
		return
	}

	switch object.GetType() {
	case ap.PersonType:
		// Federated user
		person, err := ap.ToActor(object)
		if err != nil {
			ctx.ServerError("ToActor", err)
			return
		}
		err = createPerson(ctx, person)
		if err != nil {
			ctx.ServerError("CreatePerson", err)
			return
		}
		user, err := user_model.GetUserByIRI(ctx, object.GetLink().String())
		if err != nil {
			ctx.ServerError("GetUserByIRI", err)
			return
		}
		ctx.Redirect(setting.AppURL + user.Name)
	case forgefed.RepositoryType:
		// Federated repository
		err = forgefed.OnRepository(object, func(r *forgefed.Repository) error {
			return createRepository(ctx, r)
		})
		if err != nil {
			ctx.ServerError("CreateRepository", err)
			return
		}
		repo, err := repo_model.GetRepositoryByIRI(ctx, object.GetLink().String())
		if err != nil {
			ctx.ServerError("RepositoryIRIToName", err)
			return
		}
		ctx.Redirect(setting.AppURL + repo.OwnerName + "/" + repo.Name)
	case forgefed.TicketType:
		// Federated issue or pull request
		err = forgefed.OnTicket(object, func(t *forgefed.Ticket) error {
			return createTicket(ctx, t)
		})
		if err != nil {
			ctx.ServerError("ReceiveIssue", err)
			return
		}
		username, reponame, idx, err := activitypub.TicketIRIToName(object.GetLink())
		if err != nil {
			ctx.ServerError("TicketIRIToName", err)
			return
		}
		ctx.Redirect(setting.AppURL + username + "/" + reponame + "/issues/" + strconv.FormatInt(idx, 10))
	default:
		ctx.ServerError("Not implemented", err)
		return
	}

	ctx.Status(http.StatusOK)
}