From c58fba944d701336daab57f0f0647850f7bb671f Mon Sep 17 00:00:00 2001
From: guillep2k <18600385+guillep2k@users.noreply.github.com>
Date: Fri, 15 Nov 2019 12:20:47 -0300
Subject: [PATCH] Fix permission checks for close/reopen from commit (#8875)

* Fix checks for close/reopen from commit

* Fix permission order
---
 models/action.go      | 45 ++++++++++++++++++++++++++++---------------
 models/action_test.go |  4 ++--
 2 files changed, 31 insertions(+), 18 deletions(-)

diff --git a/models/action.go b/models/action.go
index 1e05a68c3..8673dd294 100644
--- a/models/action.go
+++ b/models/action.go
@@ -491,32 +491,45 @@ func UpdateIssuesCommit(doer *User, repo *Repository, commits []*PushCommit, bra
 			}
 			refMarked[key] = true
 
-			// only create comments for issues if user has permission for it
-			if perm.IsAdmin() || perm.IsOwner() || perm.CanWrite(UnitTypeIssues) {
-				message := fmt.Sprintf(`<a href="%s/commit/%s">%s</a>`, repo.Link(), c.Sha1, html.EscapeString(c.Message))
-				if err = CreateRefComment(doer, refRepo, refIssue, message, c.Sha1); err != nil {
-					return err
-				}
+			// FIXME: this kind of condition is all over the code, it should be consolidated in a single place
+			canclose := perm.IsAdmin() || perm.IsOwner() || perm.CanWrite(UnitTypeIssues) || refIssue.PosterID == doer.ID
+			cancomment := canclose || perm.CanRead(UnitTypeIssues)
+
+			// Don't proceed if the user can't comment
+			if !cancomment {
+				continue
 			}
 
-			// Process closing/reopening keywords
-			if ref.Action != references.XRefActionCloses && ref.Action != references.XRefActionReopens {
+			message := fmt.Sprintf(`<a href="%s/commit/%s">%s</a>`, repo.Link(), c.Sha1, html.EscapeString(c.Message))
+			if err = CreateRefComment(doer, refRepo, refIssue, message, c.Sha1); err != nil {
+				return err
+			}
+
+			// Only issues can be closed/reopened this way, and user needs the correct permissions
+			if refIssue.IsPull || !canclose {
 				continue
 			}
 
-			// Change issue status only if the commit has been pushed to the default branch.
-			// and if the repo is configured to allow only that
-			// FIXME: we should be using Issue.ref if set instead of repo.DefaultBranch
-			if repo.DefaultBranch != branchName && !repo.CloseIssuesViaCommitInAnyBranch {
+			// Only process closing/reopening keywords
+			if ref.Action != references.XRefActionCloses && ref.Action != references.XRefActionReopens {
 				continue
 			}
 
-			// only close issues in another repo if user has push access
-			if perm.IsAdmin() || perm.IsOwner() || perm.CanWrite(UnitTypeCode) {
-				if err := changeIssueStatus(refRepo, refIssue, doer, ref.Action == references.XRefActionCloses); err != nil {
-					return err
+			if !repo.CloseIssuesViaCommitInAnyBranch {
+				// If the issue was specified to be in a particular branch, don't allow commits in other branches to close it
+				if refIssue.Ref != "" {
+					if branchName != refIssue.Ref {
+						continue
+					}
+					// Otherwise, only process commits to the default branch
+				} else if branchName != repo.DefaultBranch {
+					continue
 				}
 			}
+
+			if err := changeIssueStatus(refRepo, refIssue, doer, ref.Action == references.XRefActionCloses); err != nil {
+				return err
+			}
 		}
 	}
 	return nil
diff --git a/models/action_test.go b/models/action_test.go
index e7766eac2..2131607fc 100644
--- a/models/action_test.go
+++ b/models/action_test.go
@@ -166,7 +166,7 @@ func TestUpdateIssuesCommit(t *testing.T) {
 		PosterID:  user.ID,
 		IssueID:   1,
 	}
-	issueBean := &Issue{RepoID: repo.ID, Index: 2}
+	issueBean := &Issue{RepoID: repo.ID, Index: 4}
 
 	AssertNotExistsBean(t, commentBean)
 	AssertNotExistsBean(t, &Issue{RepoID: repo.ID, Index: 2}, "is_closed=1")
@@ -220,7 +220,7 @@ func TestUpdateIssuesCommit_Colon(t *testing.T) {
 	repo := AssertExistsAndLoadBean(t, &Repository{ID: 1}).(*Repository)
 	repo.Owner = user
 
-	issueBean := &Issue{RepoID: repo.ID, Index: 2}
+	issueBean := &Issue{RepoID: repo.ID, Index: 4}
 
 	AssertNotExistsBean(t, &Issue{RepoID: repo.ID, Index: 2}, "is_closed=1")
 	assert.NoError(t, UpdateIssuesCommit(user, repo, pushCommits, repo.DefaultBranch))