Revert package access change from #23879 (#25707)

Fixes (?) #25538
Fixes https://codeberg.org/forgejo/forgejo/issues/972

Regression #23879

#23879 introduced a change which prevents read access to packages if a
user is not a member of an organization.

That PR also contained a change which disallows package access if the
team unit is configured with "no access" for packages. I don't think
this change makes sense (at the moment). It may be relevant for private
orgs. But for public or limited orgs that's useless because an
unauthorized user would have more access rights than the team member.
This PR restores the old behaviour "If a user has read access for an
owner, they can read packages".

---------

Co-authored-by: Giteabot <[email protected]>

models/fixtures/org_user.yml

@@ -81,3 +81,21 @@
   uid: 5
   org_id: 23
   is_public: false
+
+-
+  id: 15
+  uid: 1
+  org_id: 35
+  is_public: true
+
+-
+  id: 16
+  uid: 1
+  org_id: 36
+  is_public: true
+
+-
+  id: 17
+  uid: 5
+  org_id: 36
+  is_public: true

models/fixtures/team.yml

@@ -184,3 +184,36 @@
   num_members: 1
   includes_all_repositories: false
   can_create_org_repo: true
+
+-
+  id: 18
+  org_id: 35
+  lower_name: owners
+  name: Owners
+  authorize: 4 # owner
+  num_repos: 0
+  num_members: 1
+  includes_all_repositories: false
+  can_create_org_repo: true
+
+-
+  id: 19
+  org_id: 36
+  lower_name: owners
+  name: Owners
+  authorize: 4 # owner
+  num_repos: 0
+  num_members: 1
+  includes_all_repositories: false
+  can_create_org_repo: true
+
+-
+  id: 20
+  org_id: 36
+  lower_name: team20writepackage
+  name: team20writepackage
+  authorize: 1
+  num_repos: 0
+  num_members: 1
+  includes_all_repositories: false
+  can_create_org_repo: true

models/fixtures/team_unit.yml

@@ -273,4 +273,10 @@
   id: 46
   team_id: 17
   type: 9 # package
-  access_mode: 0
+  access_mode: 2
+
+-
+  id: 47
+  team_id: 20
+  type: 9 # package
+  access_mode: 2

models/fixtures/team_user.yml

@@ -105,3 +105,21 @@
   org_id: 23
   team_id: 17
   uid: 5
+
+-
+  id: 19
+  org_id: 35
+  team_id: 18
+  uid: 1
+
+-
+  id: 20
+  org_id: 36
+  team_id: 19
+  uid: 1
+
+-
+  id: 21
+  org_id: 36
+  team_id: 20
+  uid: 5

models/fixtures/user.yml

@@ -1258,3 +1258,77 @@
   repo_admin_change_team_access: false
   theme: ""
   keep_activity_private: false
+
+-
+  id: 35
+  lower_name: private_org35
+  name: private_org35
+  full_name: Private Org 35
+  email: [email protected]
+  keep_email_private: false
+  email_notifications_preference: enabled
+  passwd: ZogKvWdyEx:password
+  passwd_hash_algo: dummy
+  must_change_password: false
+  login_source: 0
+  login_name: private_org35
+  type: 1
+  salt: ZogKvWdyEx
+  max_repo_creation: -1
+  is_active: true
+  is_admin: false
+  is_restricted: false
+  allow_git_hook: false
+  allow_import_local: false
+  allow_create_organization: true
+  prohibit_login: false
+  avatar: avatar35
+  avatar_email: [email protected]
+  use_custom_avatar: false
+  num_followers: 0
+  num_following: 0
+  num_stars: 0
+  num_repos: 0
+  num_teams: 1
+  num_members: 1
+  visibility: 2
+  repo_admin_change_team_access: false
+  theme: ""
+  keep_activity_private: false
+
+-
+  id: 36
+  lower_name: limited_org36
+  name: limited_org36
+  full_name: Limited Org 36
+  email: [email protected]
+  keep_email_private: false
+  email_notifications_preference: enabled
+  passwd: ZogKvWdyEx:password
+  passwd_hash_algo: dummy
+  must_change_password: false
+  login_source: 0
+  login_name: limited_org36
+  type: 1
+  salt: ZogKvWdyEx
+  max_repo_creation: -1
+  is_active: true
+  is_admin: false
+  is_restricted: false
+  allow_git_hook: false
+  allow_import_local: false
+  allow_create_organization: true
+  prohibit_login: false
+  avatar: avatar22
+  avatar_email: [email protected]
+  use_custom_avatar: false
+  num_followers: 0
+  num_following: 0
+  num_stars: 0
+  num_repos: 0
+  num_teams: 2
+  num_members: 2
+  visibility: 1
+  repo_admin_change_team_access: false
+  theme: ""
+  keep_activity_private: false

modules/context/package.go

@@ -108,18 +108,28 @@ func determineAccessMode(ctx *Base, pkg *Package, doer *user_model.User) (perm.A
 
 		if doer != nil && !doer.IsGhost() {
 			// 1. If user is logged in, check all team packages permissions
-			teams, err := organization.GetUserOrgTeams(ctx, org.ID, doer.ID)
+			var err error
+			accessMode, err = org.GetOrgUserMaxAuthorizeLevel(doer.ID)
 			if err != nil {
 				return accessMode, err
 			}
-			for _, t := range teams {
-				perm := t.UnitAccessMode(ctx, unit.TypePackages)
-				if accessMode < perm {
-					accessMode = perm
+			// If access mode is less than write check every team for more permissions
+			// The minimum possible access mode is read for org members
+			if accessMode < perm.AccessModeWrite {
+				teams, err := organization.GetUserOrgTeams(ctx, org.ID, doer.ID)
+				if err != nil {
+					return accessMode, err
+				}
+				for _, t := range teams {
+					perm := t.UnitAccessMode(ctx, unit.TypePackages)
+					if accessMode < perm {
+						accessMode = perm
+					}
 				}
 			}
-		} else if organization.HasOrgOrUserVisible(ctx, pkg.Owner, doer) {
-			// 2. If user is non-login, check if org is visible to non-login user
+		}
+		if accessMode == perm.AccessModeNone && organization.HasOrgOrUserVisible(ctx, pkg.Owner, doer) {
+			// 2. If user is unauthorized or no org member, check if org is visible
 			accessMode = perm.AccessModeRead
 		}
 	} else {

tests/integration/api_org_test.go

@@ -170,9 +170,9 @@ func TestAPIGetAll(t *testing.T) {
 	var apiOrgList []*api.Organization
 
 	DecodeJSON(t, resp, &apiOrgList)
-	assert.Len(t, apiOrgList, 9)
-	assert.Equal(t, "org25", apiOrgList[1].FullName)
-	assert.Equal(t, "public", apiOrgList[1].Visibility)
+	assert.Len(t, apiOrgList, 11)
+	assert.Equal(t, "Limited Org 36", apiOrgList[1].FullName)
+	assert.Equal(t, "limited", apiOrgList[1].Visibility)
 
 	// accessing without a token will return only public orgs
 	req = NewRequestf(t, "GET", "/api/v1/orgs")