Ensure that restricted users can access repos for which they are members (#17460)

There is a small bug in the way that repo access is checked in
repoAssignment: Accessibility is checked by checking if the user has a
marked access to the repository instead of checking if the user has any
team granted access.

This PR changes this permissions check to use HasAccess() which does the
correct test. There is also a fix in the release api ListReleases where
it should return draft releases if the user is a member of a team with
write access to the releases.

The PR also adds a testcase.

Signed-off-by: Andrew Thornton <art27@cantab.net>

integrations/org_test.go

@@ -5,10 +5,12 @@
 package integrations
 
 import (
+	"fmt"
 	"net/http"
 	"strings"
 	"testing"
 
+	api "code.gitea.io/gitea/modules/structs"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -110,3 +112,64 @@ func TestPrivateOrg(t *testing.T) {
 	req = NewRequest(t, "GET", "/privated_org/private_repo_on_private_org")
 	session.MakeRequest(t, req, http.StatusOK)
 }
+
+func TestOrgRestrictedUser(t *testing.T) {
+	defer prepareTestEnv(t)()
+
+	// privated_org is a private org who has id 23
+	orgName := "privated_org"
+
+	// public_repo_on_private_org is a public repo on privated_org
+	repoName := "public_repo_on_private_org"
+
+	// user29 is a restricted user who is not a member of the organization
+	restrictedUser := "user29"
+
+	// #17003 reports a bug whereby adding a restricted user to a read-only team doesn't work
+
+	// assert restrictedUser cannot see the org or the public repo
+	restrictedSession := loginUser(t, restrictedUser)
+	req := NewRequest(t, "GET", fmt.Sprintf("/%s", orgName))
+	restrictedSession.MakeRequest(t, req, http.StatusNotFound)
+
+	req = NewRequest(t, "GET", fmt.Sprintf("/%s/%s", orgName, repoName))
+	restrictedSession.MakeRequest(t, req, http.StatusNotFound)
+
+	// Therefore create a read-only team
+	adminSession := loginUser(t, "user1")
+	token := getTokenForLoggedInUser(t, adminSession)
+
+	teamToCreate := &api.CreateTeamOption{
+		Name:                    "codereader",
+		Description:             "Code Reader",
+		IncludesAllRepositories: true,
+		Permission:              "read",
+		Units:                   []string{"repo.code"},
+	}
+
+	req = NewRequestWithJSON(t, "POST",
+		fmt.Sprintf("/api/v1/orgs/%s/teams?token=%s", orgName, token), teamToCreate)
+
+	var apiTeam api.Team
+
+	resp := adminSession.MakeRequest(t, req, http.StatusCreated)
+	DecodeJSON(t, resp, &apiTeam)
+	checkTeamResponse(t, &apiTeam, teamToCreate.Name, teamToCreate.Description, teamToCreate.IncludesAllRepositories,
+		teamToCreate.Permission, teamToCreate.Units)
+	checkTeamBean(t, apiTeam.ID, teamToCreate.Name, teamToCreate.Description, teamToCreate.IncludesAllRepositories,
+		teamToCreate.Permission, teamToCreate.Units)
+	//teamID := apiTeam.ID
+
+	// Now we need to add the restricted user to the team
+	req = NewRequest(t, "PUT",
+		fmt.Sprintf("/api/v1/teams/%d/members/%s?token=%s", apiTeam.ID, restrictedUser, token))
+	_ = adminSession.MakeRequest(t, req, http.StatusNoContent)
+
+	// Now we need to check if the restrictedUser can access the repo
+	req = NewRequest(t, "GET", fmt.Sprintf("/%s", orgName))
+	restrictedSession.MakeRequest(t, req, http.StatusOK)
+
+	req = NewRequest(t, "GET", fmt.Sprintf("/%s/%s", orgName, repoName))
+	restrictedSession.MakeRequest(t, req, http.StatusOK)
+
+}

models/fixtures/repository.yml

@@ -568,7 +568,7 @@
 -
   id: 40
   owner_id: 23
-  owner_name: limited_org
+  owner_name: privated_org
   lower_name: public_repo_on_private_org
   name: public_repo_on_private_org
   is_private: false
@@ -581,7 +581,7 @@
 -
   id: 41
   owner_id: 23
-  owner_name: limited_org
+  owner_name: privated_org
   lower_name: private_repo_on_private_org
   name: private_repo_on_private_org
   is_private: true

modules/context/repo.go

@@ -345,7 +345,7 @@ func repoAssignment(ctx *Context, repo *models.Repository) {
 	}
 
 	// Check access.
-	if ctx.Repo.Permission.AccessMode == models.AccessModeNone {
+	if !ctx.Repo.Permission.HasAccess() {
 		if ctx.FormString("go-get") == "1" {
 			EarlyResponseForGoGetMeta(ctx)
 			return

routers/api/v1/repo/release.go

@@ -114,7 +114,7 @@ func ListReleases(ctx *context.APIContext) {
 
 	opts := models.FindReleasesOptions{
 		ListOptions:   listOptions,
-		IncludeDrafts: ctx.Repo.AccessMode >= models.AccessModeWrite,
+		IncludeDrafts: ctx.Repo.AccessMode >= models.AccessModeWrite || ctx.Repo.UnitAccessMode(models.UnitTypeReleases) >= models.AccessModeWrite,
 		IncludeTags:   false,
 		IsDraft:       ctx.FormOptionalBool("draft"),
 		IsPreRelease:  ctx.FormOptionalBool("pre-release"),