Add user blocking (#29028)

Fixes #17453

This PR adds the abbility to block a user from a personal account or
organization to restrict how the blocked user can interact with the
blocker. The docs explain what's the consequence of blocking a user.

Screenshots:


![grafik](https://github.com/go-gitea/gitea/assets/1666336/4ed884f3-e06a-4862-afd3-3b8aa2488dc6)


![grafik](https://github.com/go-gitea/gitea/assets/1666336/ae6d4981-f252-4f50-a429-04f0f9f1cdf1)


![grafik](https://github.com/go-gitea/gitea/assets/1666336/ca153599-5b0f-4b4a-90fe-18bdfd6f0b6b)

---------

Co-authored-by: Lauris BH <lauris@nix.lv>

docs/content/usage/blocking-users.en-us.md

@@ -0,0 +1,56 @@
+---
+date: "2024-01-31T00:00:00+00:00"
+title: "Blocking a user"
+slug: "blocking-user"
+sidebar_position: 25
+toc: false
+draft: false
+aliases:
+  - /en-us/webhooks
+menu:
+  sidebar:
+    parent: "usage"
+    name: "Blocking a user"
+    sidebar_position: 30
+    identifier: "blocking-user"
+---
+
+# Blocking a user
+
+Gitea supports blocking of users to restrict how they can interact with you and your content.
+
+You can block a user in your account settings, from the user's profile or from comments created by the user.
+The user is not directly notified about the block, but they can notice they are blocked when they attempt to interact with you.
+Organization owners can block anyone who is not a member of the organization too.
+If a blocked user has admin permissions, they can still perform all actions even if blocked.
+
+### When you block a user
+
+- the user stops following you
+- you stop following the user
+- the user's stars are removed from your repositories
+- your stars are removed from their repositories
+- the user stops watching your repositories
+- you stop watching their repositories
+- the user's issue assignments are removed from your repositories
+- your issue assignments are removed from their repositories
+- the user is removed as a collaborator on your repositories
+- you are removed as a collaborator on their repositories
+- any pending repository transfers to or from the blocked user are canceled
+
+### When you block a user, the user cannot
+
+- follow you
+- watch your repositories
+- star your repositories
+- fork your repositories
+- transfer repositories to you
+- open issues or pull requests on your repositories
+- comment on issues or pull requests you've created
+- comment on issues or pull requests on your repositories
+- react to your comments on issues or pull requests
+- react to comments on issues or pull requests on your repositories
+- assign you to issues or pull requests
+- add you as a collaborator on their repositories
+- send you notifications by @mentioning your username
+- be added as team member (if blocked by an organization)

models/fixtures/access.yml

@@ -42,120 +42,132 @@
 
 -
   id: 8
-  user_id: 15
+  user_id: 10
   repo_id: 21
   mode: 2
 
 -
   id: 9
-  user_id: 15
+  user_id: 10
-  repo_id: 22
+  repo_id: 32
   mode: 2
 
 -
   id: 10
   user_id: 15
+  repo_id: 21
+  mode: 2
+
+-
+  id: 11
+  user_id: 15
+  repo_id: 22
+  mode: 2
+
+-
+  id: 12
+  user_id: 15
   repo_id: 23
   mode: 4
 
 -
-  id: 11
+  id: 13
   user_id: 15
   repo_id: 24
   mode: 4
 
 -
-  id: 12
+  id: 14
   user_id: 15
   repo_id: 32
   mode: 2
 
 -
-  id: 13
+  id: 15
   user_id: 18
   repo_id: 21
   mode: 2
 
 -
-  id: 14
+  id: 16
   user_id: 18
   repo_id: 22
   mode: 2
 
 -
-  id: 15
+  id: 17
   user_id: 18
   repo_id: 23
   mode: 4
 
 -
-  id: 16
+  id: 18
   user_id: 18
   repo_id: 24
   mode: 4
 
 -
-  id: 17
+  id: 19
   user_id: 20
   repo_id: 24
   mode: 1
 
 -
-  id: 18
+  id: 20
   user_id: 20
   repo_id: 27
   mode: 4
 
 -
-  id: 19
+  id: 21
   user_id: 20
   repo_id: 28
   mode: 4
 
 -
-  id: 20
+  id: 22
   user_id: 29
   repo_id: 4
   mode: 2
 
 -
-  id: 21
+  id: 23
   user_id: 29
   repo_id: 24
   mode: 1
 
 -
-  id: 22
+  id: 24
   user_id: 31
   repo_id: 27
   mode: 4
 
 -
-  id: 23
+  id: 25
   user_id: 31
   repo_id: 28
   mode: 4
 
 -
-  id: 24
+  id: 26
   user_id: 38
   repo_id: 60
   mode: 2
 
 -
-  id: 25
+  id: 27
   user_id: 38
   repo_id: 61
   mode: 1
 
 -
-  id: 26
+  id: 28
   user_id: 39
   repo_id: 61
   mode: 1
 
 -
-  id: 27
+  id: 29
   user_id: 40
   repo_id: 61
   mode: 4

models/fixtures/collaboration.yml

@@ -51,3 +51,15 @@
   repo_id: 60
   user_id: 38
   mode: 2 # write
+
+-
+  id: 10
+  repo_id: 21
+  user_id: 10
+  mode: 2 # write
+
+-
+  id: 11
+  repo_id: 32
+  user_id: 10
+  mode: 2 # write

models/fixtures/issue_assignees.yml

@@ -14,3 +14,7 @@
   id: 4
   assignee_id: 2
   issue_id: 17
+-
+  id: 5
+  assignee_id: 10
+  issue_id: 6

models/fixtures/repo_transfer.yml

@@ -5,3 +5,19 @@
   repo_id: 3
   created_unix: 1553610671
   updated_unix: 1553610671
+
+-
+  id: 2
+  doer_id: 16
+  recipient_id: 10
+  repo_id: 21
+  created_unix: 1553610671
+  updated_unix: 1553610671
+
+-
+  id: 3
+  doer_id: 3
+  recipient_id: 10
+  repo_id: 32
+  created_unix: 1553610671
+  updated_unix: 1553610671

models/fixtures/repository.yml

@@ -614,8 +614,8 @@
   owner_name: user16
   lower_name: big_test_public_3
   name: big_test_public_3
-  num_watches: 0
+  num_watches: 1
-  num_stars: 0
+  num_stars: 1
   num_forks: 0
   num_issues: 0
   num_closed_issues: 0
@@ -945,8 +945,8 @@
   owner_name: org3
   lower_name: repo21
   name: repo21
-  num_watches: 0
+  num_watches: 1
-  num_stars: 0
+  num_stars: 1
   num_forks: 0
   num_issues: 2
   num_closed_issues: 0

models/fixtures/star.yml

@@ -7,3 +7,13 @@
   id: 2
   uid: 2
   repo_id: 4
+
+-
+  id: 3
+  uid: 10
+  repo_id: 21
+
+-
+  id: 4
+  uid: 10
+  repo_id: 32

models/fixtures/user.yml

@@ -361,7 +361,7 @@
   use_custom_avatar: false
   num_followers: 0
   num_following: 0
-  num_stars: 0
+  num_stars: 2
   num_repos: 3
   num_teams: 0
   num_members: 0

models/fixtures/user_blocking.yml

@@ -0,0 +1,19 @@
+-
+  id: 1
+  blocker_id: 2
+  blockee_id: 29
+
+-
+  id: 2
+  blocker_id: 17
+  blockee_id: 28
+
+-
+  id: 3
+  blocker_id: 2
+  blockee_id: 34
+
+-
+  id: 4
+  blocker_id: 50
+  blockee_id: 34

models/fixtures/watch.yml

@@ -27,3 +27,15 @@
   user_id: 11
   repo_id: 1
   mode: 3 # auto
+
+-
+  id: 6
+  user_id: 10
+  repo_id: 21
+  mode: 1 # normal
+
+-
+  id: 7
+  user_id: 10
+  repo_id: 32
+  mode: 1 # normal

models/issues/assignees.go

@@ -64,6 +64,27 @@ func IsUserAssignedToIssue(ctx context.Context, issue *Issue, user *user_model.U
 	return db.Exist[IssueAssignees](ctx, builder.Eq{"assignee_id": user.ID, "issue_id": issue.ID})
 }
 
+type AssignedIssuesOptions struct {
+	db.ListOptions
+	AssigneeID  int64
+	RepoOwnerID int64
+}
+
+func (opts *AssignedIssuesOptions) ToConds() builder.Cond {
+	cond := builder.NewCond()
+	if opts.AssigneeID != 0 {
+		cond = cond.And(builder.In("issue.id", builder.Select("issue_id").From("issue_assignees").Where(builder.Eq{"assignee_id": opts.AssigneeID})))
+	}
+	if opts.RepoOwnerID != 0 {
+		cond = cond.And(builder.In("issue.repo_id", builder.Select("id").From("repository").Where(builder.Eq{"owner_id": opts.RepoOwnerID})))
+	}
+	return cond
+}
+
+func GetAssignedIssues(ctx context.Context, opts *AssignedIssuesOptions) ([]*Issue, int64, error) {
+	return db.FindAndCount[Issue](ctx, opts)
+}
+
 // ToggleIssueAssignee changes a user between assigned and not assigned for this issue, and make issue comment for it.
 func ToggleIssueAssignee(ctx context.Context, issue *Issue, doer *user_model.User, assigneeID int64) (removed bool, comment *Comment, err error) {
 	ctx, committer, err := db.TxContext(ctx)

models/issues/issue_update.go

@@ -517,6 +517,15 @@ func FindAndUpdateIssueMentions(ctx context.Context, issue *Issue, doer *user_mo
 	if err != nil {
 		return nil, fmt.Errorf("UpdateIssueMentions [%d]: %w", issue.ID, err)
 	}
+
+	notBlocked := make([]*user_model.User, 0, len(mentions))
+	for _, user := range mentions {
+		if !user_model.IsUserBlockedBy(ctx, doer, user.ID) {
+			notBlocked = append(notBlocked, user)
+		}
+	}
+	mentions = notBlocked
+
 	if err = UpdateIssueMentions(ctx, issue.ID, mentions); err != nil {
 		return nil, fmt.Errorf("UpdateIssueMentions [%d]: %w", issue.ID, err)
 	}

models/issues/issue_xref.go

@@ -214,6 +214,10 @@ func (issue *Issue) verifyReferencedIssue(stdCtx context.Context, ctx *crossRefe
 		if !perm.CanReadIssuesOrPulls(refIssue.IsPull) {
 			return nil, references.XRefActionNone, nil
 		}
+		if user_model.IsUserBlockedBy(stdCtx, ctx.Doer, refIssue.PosterID, refIssue.Repo.OwnerID) {
+			return nil, references.XRefActionNone, nil
+		}
+
 		// Accept close/reopening actions only if the poster is able to close the
 		// referenced issue manually at this moment. The only exception is
 		// the poster of a new PR referencing an issue on the same repo: then the merger

models/issues/reaction.go

@@ -240,25 +240,6 @@ func CreateReaction(ctx context.Context, opts *ReactionOptions) (*Reaction, erro
 	return reaction, nil
 }
 
-// CreateIssueReaction creates a reaction on issue.
-func CreateIssueReaction(ctx context.Context, doerID, issueID int64, content string) (*Reaction, error) {
-	return CreateReaction(ctx, &ReactionOptions{
-		Type:    content,
-		DoerID:  doerID,
-		IssueID: issueID,
-	})
-}
-
-// CreateCommentReaction creates a reaction on comment.
-func CreateCommentReaction(ctx context.Context, doerID, issueID, commentID int64, content string) (*Reaction, error) {
-	return CreateReaction(ctx, &ReactionOptions{
-		Type:      content,
-		DoerID:    doerID,
-		IssueID:   issueID,
-		CommentID: commentID,
-	})
-}
-
 // DeleteReaction deletes reaction for issue or comment.
 func DeleteReaction(ctx context.Context, opts *ReactionOptions) error {
 	reaction := &Reaction{

models/migrations/migrations.go

@@ -560,6 +560,8 @@ var migrations = []Migration{
 	NewMigration("Add support for SHA256 git repositories", v1_22.AdjustDBForSha256),
 	// v287 -> v288
 	NewMigration("Use Slug instead of ID for Badges", v1_22.UseSlugInsteadOfIDForBadges),
+	// v288 -> v289
+	NewMigration("Add user_blocking table", v1_22.AddUserBlockingTable),
 }
 
 // GetCurrentDBVersion returns the current db version

models/migrations/v1_22/v288.go

@@ -0,0 +1,26 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package v1_22 //nolint
+
+import (
+	"code.gitea.io/gitea/modules/timeutil"
+
+	"xorm.io/xorm"
+)
+
+type Blocking struct {
+	ID          int64 `xorm:"pk autoincr"`
+	BlockerID   int64 `xorm:"UNIQUE(block)"`
+	BlockeeID   int64 `xorm:"UNIQUE(block)"`
+	Note        string
+	CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"`
+}
+
+func (*Blocking) TableName() string {
+	return "user_blocking"
+}
+
+func AddUserBlockingTable(x *xorm.Engine) error {
+	return x.Sync(&Blocking{})
+}

models/org.go

@@ -12,15 +12,16 @@ import (
 	"code.gitea.io/gitea/models/organization"
 	access_model "code.gitea.io/gitea/models/perm/access"
 	repo_model "code.gitea.io/gitea/models/repo"
+	user_model "code.gitea.io/gitea/models/user"
 )
 
 // RemoveOrgUser removes user from given organization.
-func RemoveOrgUser(ctx context.Context, orgID, userID int64) error {
+func RemoveOrgUser(ctx context.Context, org *organization.Organization, user *user_model.User) error {
 	ou := new(organization.OrgUser)
 
 	has, err := db.GetEngine(ctx).
-		Where("uid=?", userID).
+		Where("uid=?", user.ID).
-		And("org_id=?", orgID).
+		And("org_id=?", org.ID).
 		Get(ou)
 	if err != nil {
 		return fmt.Errorf("get org-user: %w", err)
@@ -28,13 +29,8 @@ func RemoveOrgUser(ctx context.Context, orgID, userID int64) error {
 		return nil
 	}
 
-	org, err := organization.GetOrgByID(ctx, orgID)
-	if err != nil {
-		return fmt.Errorf("GetUserByID [%d]: %w", orgID, err)
-	}
-
 	// Check if the user to delete is the last member in owner team.
-	if isOwner, err := organization.IsOrganizationOwner(ctx, orgID, userID); err != nil {
+	if isOwner, err := organization.IsOrganizationOwner(ctx, org.ID, user.ID); err != nil {
 		return err
 	} else if isOwner {
 		t, err := organization.GetOwnerTeam(ctx, org.ID)
@@ -45,8 +41,8 @@ func RemoveOrgUser(ctx context.Context, orgID, userID int64) error {
 			if err := t.LoadMembers(ctx); err != nil {
 				return err
 			}
-			if t.Members[0].ID == userID {
+			if t.Members[0].ID == user.ID {
-				return organization.ErrLastOrgOwner{UID: userID}
+				return organization.ErrLastOrgOwner{UID: user.ID}
 			}
 		}
 	}
@@ -59,28 +55,32 @@ func RemoveOrgUser(ctx context.Context, orgID, userID int64) error {
 
 	if _, err := db.DeleteByID[organization.OrgUser](ctx, ou.ID); err != nil {
 		return err
-	} else if _, err = db.Exec(ctx, "UPDATE `user` SET num_members=num_members-1 WHERE id=?", orgID); err != nil {
+	} else if _, err = db.Exec(ctx, "UPDATE `user` SET num_members=num_members-1 WHERE id=?", org.ID); err != nil {
 		return err
 	}
 
 	// Delete all repository accesses and unwatch them.
-	env, err := organization.AccessibleReposEnv(ctx, org, userID)
+	env, err := organization.AccessibleReposEnv(ctx, org, user.ID)
 	if err != nil {
 		return fmt.Errorf("AccessibleReposEnv: %w", err)
 	}
 	repoIDs, err := env.RepoIDs(1, org.NumRepos)
 	if err != nil {
-		return fmt.Errorf("GetUserRepositories [%d]: %w", userID, err)
+		return fmt.Errorf("GetUserRepositories [%d]: %w", user.ID, err)
 	}
 	for _, repoID := range repoIDs {
-		if err = repo_model.WatchRepo(ctx, userID, repoID, false); err != nil {
+		repo, err := repo_model.GetRepositoryByID(ctx, repoID)
+		if err != nil {
+			return err
+		}
+		if err = repo_model.WatchRepo(ctx, user, repo, false); err != nil {
 			return err
 		}
 	}
 
 	if len(repoIDs) > 0 {
 		if _, err = db.GetEngine(ctx).
-			Where("user_id = ?", userID).
+			Where("user_id = ?", user.ID).
 			In("repo_id", repoIDs).
 			Delete(new(access_model.Access)); err != nil {
 			return err
@@ -88,12 +88,12 @@ func RemoveOrgUser(ctx context.Context, orgID, userID int64) error {
 	}
 
 	// Delete member in their teams.
-	teams, err := organization.GetUserOrgTeams(ctx, org.ID, userID)
+	teams, err := organization.GetUserOrgTeams(ctx, org.ID, user.ID)
 	if err != nil {
 		return err
 	}
 	for _, t := range teams {
-		if err = removeTeamMember(ctx, t, userID); err != nil {
+		if err = removeTeamMember(ctx, t, user); err != nil {
 			return err
 		}
 	}

models/org_team.go

@@ -44,7 +44,7 @@ func AddRepository(ctx context.Context, t *organization.Team, repo *repo_model.R
 			return fmt.Errorf("getMembers: %w", err)
 		}
 		for _, u := range t.Members {
-			if err = repo_model.WatchRepo(ctx, u.ID, repo.ID, true); err != nil {
+			if err = repo_model.WatchRepo(ctx, u, repo, true); err != nil {
 				return fmt.Errorf("watchRepo: %w", err)
 			}
 		}
@@ -125,7 +125,7 @@ func removeAllRepositories(ctx context.Context, t *organization.Team) (err error
 				continue
 			}
 
-			if err = repo_model.WatchRepo(ctx, user.ID, repo.ID, false); err != nil {
+			if err = repo_model.WatchRepo(ctx, user, repo, false); err != nil {
 				return err
 			}
 
@@ -341,7 +341,7 @@ func DeleteTeam(ctx context.Context, t *organization.Team) error {
 	}
 
 	for _, tm := range t.Members {
-		if err := removeInvalidOrgUser(ctx, tm.ID, t.OrgID); err != nil {
+		if err := removeInvalidOrgUser(ctx, t.OrgID, tm); err != nil {
 			return err
 		}
 	}
@@ -356,19 +356,23 @@ func DeleteTeam(ctx context.Context, t *organization.Team) error {
 
 // AddTeamMember adds new membership of given team to given organization,
 // the user will have membership to given organization automatically when needed.
-func AddTeamMember(ctx context.Context, team *organization.Team, userID int64) error {
+func AddTeamMember(ctx context.Context, team *organization.Team, user *user_model.User) error {
-	isAlreadyMember, err := organization.IsTeamMember(ctx, team.OrgID, team.ID, userID)
+	if user_model.IsUserBlockedBy(ctx, user, team.OrgID) {
+		return user_model.ErrBlockedUser
+	}
+
+	isAlreadyMember, err := organization.IsTeamMember(ctx, team.OrgID, team.ID, user.ID)
 	if err != nil || isAlreadyMember {
 		return err
 	}
 
-	if err := organization.AddOrgUser(ctx, team.OrgID, userID); err != nil {
+	if err := organization.AddOrgUser(ctx, team.OrgID, user.ID); err != nil {
 		return err
 	}
 
 	err = db.WithTx(ctx, func(ctx context.Context) error {
 		// check in transaction
-		isAlreadyMember, err = organization.IsTeamMember(ctx, team.OrgID, team.ID, userID)
+		isAlreadyMember, err = organization.IsTeamMember(ctx, team.OrgID, team.ID, user.ID)
 		if err != nil || isAlreadyMember {
 			return err
 		}
@@ -376,7 +380,7 @@ func AddTeamMember(ctx context.Context, team *organization.Team, userID int64) e
 		sess := db.GetEngine(ctx)
 
 		if err := db.Insert(ctx, &organization.TeamUser{
-			UID:    userID,
+			UID:    user.ID,
 			OrgID:  team.OrgID,
 			TeamID: team.ID,
 		}); err != nil {
@@ -392,7 +396,7 @@ func AddTeamMember(ctx context.Context, team *organization.Team, userID int64) e
 		subQuery := builder.Select("repo_id").From("team_repo").
 			Where(builder.Eq{"team_id": team.ID})
 
-		if _, err := sess.Where("user_id=?", userID).
+		if _, err := sess.Where("user_id=?", user.ID).
 			In("repo_id", subQuery).
 			And("mode < ?", team.AccessMode).
 			SetExpr("mode", team.AccessMode).
@@ -402,14 +406,14 @@ func AddTeamMember(ctx context.Context, team *organization.Team, userID int64) e
 
 		// for not exist access
 		var repoIDs []int64
-		accessSubQuery := builder.Select("repo_id").From("access").Where(builder.Eq{"user_id": userID})
+		accessSubQuery := builder.Select("repo_id").From("access").Where(builder.Eq{"user_id": user.ID})
 		if err := sess.SQL(subQuery.And(builder.NotIn("repo_id", accessSubQuery))).Find(&repoIDs); err != nil {
 			return fmt.Errorf("select id accesses: %w", err)
 		}
 
 		accesses := make([]*access_model.Access, 0, 100)
 		for i, repoID := range repoIDs {
-			accesses = append(accesses, &access_model.Access{RepoID: repoID, UserID: userID, Mode: team.AccessMode})
+			accesses = append(accesses, &access_model.Access{RepoID: repoID, UserID: user.ID, Mode: team.AccessMode})
 			if (i%100 == 0 || i == len(repoIDs)-1) && len(accesses) > 0 {
 				if err = db.Insert(ctx, accesses); err != nil {
 					return fmt.Errorf("insert new user accesses: %w", err)
@@ -430,10 +434,11 @@ func AddTeamMember(ctx context.Context, team *organization.Team, userID int64) e
 		if err := team.LoadRepositories(ctx); err != nil {
 			log.Error("team.LoadRepositories failed: %v", err)
 		}
+
 		// FIXME: in the goroutine, it can't access the "ctx", it could only use db.DefaultContext at the moment
 		go func(repos []*repo_model.Repository) {
 			for _, repo := range repos {
-				if err = repo_model.WatchRepo(db.DefaultContext, userID, repo.ID, true); err != nil {
+				if err = repo_model.WatchRepo(db.DefaultContext, user, repo, true); err != nil {
 					log.Error("watch repo failed: %v", err)
 				}
 			}
@@ -443,16 +448,16 @@ func AddTeamMember(ctx context.Context, team *organization.Team, userID int64) e
 	return nil
 }
 
-func removeTeamMember(ctx context.Context, team *organization.Team, userID int64) error {
+func removeTeamMember(ctx context.Context, team *organization.Team, user *user_model.User) error {
 	e := db.GetEngine(ctx)
-	isMember, err := organization.IsTeamMember(ctx, team.OrgID, team.ID, userID)
+	isMember, err := organization.IsTeamMember(ctx, team.OrgID, team.ID, user.ID)
 	if err != nil || !isMember {
 		return err
 	}
 
 	// Check if the user to delete is the last member in owner team.
 	if team.IsOwnerTeam() && team.NumMembers == 1 {
-		return organization.ErrLastOrgOwner{UID: userID}
+		return organization.ErrLastOrgOwner{UID: user.ID}
 	}
 
 	team.NumMembers--
@@ -462,7 +467,7 @@ func removeTeamMember(ctx context.Context, team *organization.Team, userID int64
 	}
 
 	if _, err := e.Delete(&organization.TeamUser{
-		UID:    userID,
+		UID:    user.ID,
 		OrgID:  team.OrgID,
 		TeamID: team.ID,
 	}); err != nil {
@@ -476,76 +481,76 @@ func removeTeamMember(ctx context.Context, team *organization.Team, userID int64
 
 	// Delete access to team repositories.
 	for _, repo := range team.Repos {
-		if err := access_model.RecalculateUserAccess(ctx, repo, userID); err != nil {
+		if err := access_model.RecalculateUserAccess(ctx, repo, user.ID); err != nil {
 			return err
 		}
 
 		// Remove watches from now unaccessible
-		if err := ReconsiderWatches(ctx, repo, userID); err != nil {
+		if err := ReconsiderWatches(ctx, repo, user); err != nil {
 			return err
 		}
 
 		// Remove issue assignments from now unaccessible
-		if err := ReconsiderRepoIssuesAssignee(ctx, repo, userID); err != nil {
+		if err := ReconsiderRepoIssuesAssignee(ctx, repo, user); err != nil {
 			return err
 		}
 	}
 
-	return removeInvalidOrgUser(ctx, userID, team.OrgID)
+	return removeInvalidOrgUser(ctx, team.OrgID, user)
 }
 
-func removeInvalidOrgUser(ctx context.Context, userID, orgID int64) error {
+func removeInvalidOrgUser(ctx context.Context, orgID int64, user *user_model.User) error {
 	// Check if the user is a member of any team in the organization.
 	if count, err := db.GetEngine(ctx).Count(&organization.TeamUser{
-		UID:   userID,
+		UID:   user.ID,
 		OrgID: orgID,
 	}); err != nil {
 		return err
 	} else if count == 0 {
-		return RemoveOrgUser(ctx, orgID, userID)
+		org, err := organization.GetOrgByID(ctx, orgID)
+		if err != nil {
+			return err
+		}
+
+		return RemoveOrgUser(ctx, org, user)
 	}
 	return nil
 }
 
 // RemoveTeamMember removes member from given team of given organization.
-func RemoveTeamMember(ctx context.Context, team *organization.Team, userID int64) error {
+func RemoveTeamMember(ctx context.Context, team *organization.Team, user *user_model.User) error {
 	ctx, committer, err := db.TxContext(ctx)
 	if err != nil {
 		return err
 	}
 	defer committer.Close()
-	if err := removeTeamMember(ctx, team, userID); err != nil {
+	if err := removeTeamMember(ctx, team, user); err != nil {
 		return err
 	}
 	return committer.Commit()
 }
 
-func ReconsiderRepoIssuesAssignee(ctx context.Context, repo *repo_model.Repository, uid int64) error {
+func ReconsiderRepoIssuesAssignee(ctx context.Context, repo *repo_model.Repository, user *user_model.User) error {
-	user, err := user_model.GetUserByID(ctx, uid)
-	if err != nil {
-		return err
-	}
-
 	if canAssigned, err := access_model.CanBeAssigned(ctx, user, repo, true); err != nil || canAssigned {
 		return err
 	}
 
-	if _, err := db.GetEngine(ctx).Where(builder.Eq{"assignee_id": uid}).
+	if _, err := db.GetEngine(ctx).Where(builder.Eq{"assignee_id": user.ID}).
 		In("issue_id", builder.Select("id").From("issue").Where(builder.Eq{"repo_id": repo.ID})).
 		Delete(&issues_model.IssueAssignees{}); err != nil {
-		return fmt.Errorf("Could not delete assignee[%d] %w", uid, err)
+		return fmt.Errorf("Could not delete assignee[%d] %w", user.ID, err)
 	}
 	return nil
 }
 
-func ReconsiderWatches(ctx context.Context, repo *repo_model.Repository, uid int64) error {
+func ReconsiderWatches(ctx context.Context, repo *repo_model.Repository, user *user_model.User) error {
-	if has, err := access_model.HasAccess(ctx, uid, repo); err != nil || has {
+	if has, err := access_model.HasAccess(ctx, user.ID, repo); err != nil || has {
 		return err
 	}
-	if err := repo_model.WatchRepo(ctx, uid, repo.ID, false); err != nil {
+	if err := repo_model.WatchRepo(ctx, user, repo, false); err != nil {
 		return err
 	}
 
 	// Remove all IssueWatches a user has subscribed to in the repository
-	return issues_model.RemoveIssueWatchersByRepoID(ctx, uid, repo.ID)
+	return issues_model.RemoveIssueWatchersByRepoID(ctx, user.ID, repo.ID)
 }

models/org_team_test.go

@@ -21,33 +21,42 @@ import (
 func TestTeam_AddMember(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 
-	test := func(teamID, userID int64) {
+	test := func(team *organization.Team, user *user_model.User) {
-		team := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: teamID})
+		assert.NoError(t, AddTeamMember(db.DefaultContext, team, user))
-		assert.NoError(t, AddTeamMember(db.DefaultContext, team, userID))
+		unittest.AssertExistsAndLoadBean(t, &organization.TeamUser{UID: user.ID, TeamID: team.ID})
-		unittest.AssertExistsAndLoadBean(t, &organization.TeamUser{UID: userID, TeamID: teamID})
+		unittest.CheckConsistencyFor(t, &organization.Team{ID: team.ID}, &user_model.User{ID: team.OrgID})
-		unittest.CheckConsistencyFor(t, &organization.Team{ID: teamID}, &user_model.User{ID: team.OrgID})
 	}
-	test(1, 2)
+
-	test(1, 4)
+	team1 := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: 1})
-	test(3, 2)
+	team3 := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: 3})
+	user2 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	user4 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 4})
+
+	test(team1, user2)
+	test(team1, user4)
+	test(team3, user2)
 }
 
 func TestTeam_RemoveMember(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 
-	testSuccess := func(teamID, userID int64) {
+	testSuccess := func(team *organization.Team, user *user_model.User) {
-		team := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: teamID})
+		assert.NoError(t, RemoveTeamMember(db.DefaultContext, team, user))
-		assert.NoError(t, RemoveTeamMember(db.DefaultContext, team, userID))
+		unittest.AssertNotExistsBean(t, &organization.TeamUser{UID: user.ID, TeamID: team.ID})
-		unittest.AssertNotExistsBean(t, &organization.TeamUser{UID: userID, TeamID: teamID})
+		unittest.CheckConsistencyFor(t, &organization.Team{ID: team.ID})
-		unittest.CheckConsistencyFor(t, &organization.Team{ID: teamID})
 	}
-	testSuccess(1, 4)
-	testSuccess(2, 2)
-	testSuccess(3, 2)
-	testSuccess(3, unittest.NonexistentID)
 
-	team := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: 1})
+	team1 := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: 1})
-	err := RemoveTeamMember(db.DefaultContext, team, 2)
+	team2 := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: 2})
+	team3 := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: 3})
+	user2 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	user4 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 4})
+
+	testSuccess(team1, user4)
+	testSuccess(team2, user2)
+	testSuccess(team3, user2)
+
+	err := RemoveTeamMember(db.DefaultContext, team1, user2)
 	assert.True(t, organization.IsErrLastOrgOwner(err))
 }
 
@@ -120,33 +129,42 @@ func TestDeleteTeam(t *testing.T) {
 func TestAddTeamMember(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 
-	test := func(teamID, userID int64) {
+	test := func(team *organization.Team, user *user_model.User) {
-		team := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: teamID})
+		assert.NoError(t, AddTeamMember(db.DefaultContext, team, user))
-		assert.NoError(t, AddTeamMember(db.DefaultContext, team, userID))
+		unittest.AssertExistsAndLoadBean(t, &organization.TeamUser{UID: user.ID, TeamID: team.ID})
-		unittest.AssertExistsAndLoadBean(t, &organization.TeamUser{UID: userID, TeamID: teamID})
+		unittest.CheckConsistencyFor(t, &organization.Team{ID: team.ID}, &user_model.User{ID: team.OrgID})
-		unittest.CheckConsistencyFor(t, &organization.Team{ID: teamID}, &user_model.User{ID: team.OrgID})
 	}
-	test(1, 2)
+
-	test(1, 4)
+	team1 := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: 1})
-	test(3, 2)
+	team3 := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: 3})
+	user2 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	user4 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 4})
+
+	test(team1, user2)
+	test(team1, user4)
+	test(team3, user2)
 }
 
 func TestRemoveTeamMember(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 
-	testSuccess := func(teamID, userID int64) {
+	testSuccess := func(team *organization.Team, user *user_model.User) {
-		team := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: teamID})
+		assert.NoError(t, RemoveTeamMember(db.DefaultContext, team, user))
-		assert.NoError(t, RemoveTeamMember(db.DefaultContext, team, userID))
+		unittest.AssertNotExistsBean(t, &organization.TeamUser{UID: user.ID, TeamID: team.ID})
-		unittest.AssertNotExistsBean(t, &organization.TeamUser{UID: userID, TeamID: teamID})
+		unittest.CheckConsistencyFor(t, &organization.Team{ID: team.ID})
-		unittest.CheckConsistencyFor(t, &organization.Team{ID: teamID})
 	}
-	testSuccess(1, 4)
-	testSuccess(2, 2)
-	testSuccess(3, 2)
-	testSuccess(3, unittest.NonexistentID)
 
-	team := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: 1})
+	team1 := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: 1})
-	err := RemoveTeamMember(db.DefaultContext, team, 2)
+	team2 := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: 2})
+	team3 := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: 3})
+	user2 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	user4 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 4})
+
+	testSuccess(team1, user4)
+	testSuccess(team2, user2)
+	testSuccess(team3, user2)
+
+	err := RemoveTeamMember(db.DefaultContext, team1, user2)
 	assert.True(t, organization.IsErrLastOrgOwner(err))
 }
 
@@ -155,15 +173,15 @@ func TestRepository_RecalculateAccesses3(t *testing.T) {
 	team5 := unittest.AssertExistsAndLoadBean(t, &organization.Team{ID: 5})
 	user29 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 29})
 
-	has, err := db.GetEngine(db.DefaultContext).Get(&access_model.Access{UserID: 29, RepoID: 23})
+	has, err := db.GetEngine(db.DefaultContext).Get(&access_model.Access{UserID: user29.ID, RepoID: 23})
 	assert.NoError(t, err)
 	assert.False(t, has)
 
 	// adding user29 to team5 should add an explicit access row for repo 23
 	// even though repo 23 is public
-	assert.NoError(t, AddTeamMember(db.DefaultContext, team5, user29.ID))
+	assert.NoError(t, AddTeamMember(db.DefaultContext, team5, user29))
 
-	has, err = db.GetEngine(db.DefaultContext).Get(&access_model.Access{UserID: 29, RepoID: 23})
+	has, err = db.GetEngine(db.DefaultContext).Get(&access_model.Access{UserID: user29.ID, RepoID: 23})
 	assert.NoError(t, err)
 	assert.True(t, has)
 }

models/org_test.go

@@ -16,22 +16,27 @@ import (
 
 func TestUser_RemoveMember(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
+
 	org := unittest.AssertExistsAndLoadBean(t, &organization.Organization{ID: 3})
+	user4 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 4})
+	user5 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 5})
 
 	// remove a user that is a member
-	unittest.AssertExistsAndLoadBean(t, &organization.OrgUser{UID: 4, OrgID: 3})
+	unittest.AssertExistsAndLoadBean(t, &organization.OrgUser{UID: user4.ID, OrgID: org.ID})
 	prevNumMembers := org.NumMembers
-	assert.NoError(t, RemoveOrgUser(db.DefaultContext, org.ID, 4))
+	assert.NoError(t, RemoveOrgUser(db.DefaultContext, org, user4))
-	unittest.AssertNotExistsBean(t, &organization.OrgUser{UID: 4, OrgID: 3})
+	unittest.AssertNotExistsBean(t, &organization.OrgUser{UID: user4.ID, OrgID: org.ID})
-	org = unittest.AssertExistsAndLoadBean(t, &organization.Organization{ID: 3})
+
+	org = unittest.AssertExistsAndLoadBean(t, &organization.Organization{ID: org.ID})
 	assert.Equal(t, prevNumMembers-1, org.NumMembers)
 
 	// remove a user that is not a member
-	unittest.AssertNotExistsBean(t, &organization.OrgUser{UID: 5, OrgID: 3})
+	unittest.AssertNotExistsBean(t, &organization.OrgUser{UID: user5.ID, OrgID: org.ID})
 	prevNumMembers = org.NumMembers
-	assert.NoError(t, RemoveOrgUser(db.DefaultContext, org.ID, 5))
+	assert.NoError(t, RemoveOrgUser(db.DefaultContext, org, user5))
-	unittest.AssertNotExistsBean(t, &organization.OrgUser{UID: 5, OrgID: 3})
+	unittest.AssertNotExistsBean(t, &organization.OrgUser{UID: user5.ID, OrgID: org.ID})
-	org = unittest.AssertExistsAndLoadBean(t, &organization.Organization{ID: 3})
+
+	org = unittest.AssertExistsAndLoadBean(t, &organization.Organization{ID: org.ID})
 	assert.Equal(t, prevNumMembers, org.NumMembers)
 
 	unittest.CheckConsistencyFor(t, &user_model.User{}, &organization.Team{})
@@ -39,23 +44,31 @@ func TestUser_RemoveMember(t *testing.T) {
 
 func TestRemoveOrgUser(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
-	testSuccess := func(orgID, userID int64) {
+
-		org := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: orgID})
+	testSuccess := func(org *organization.Organization, user *user_model.User) {
 		expectedNumMembers := org.NumMembers
-		if unittest.BeanExists(t, &organization.OrgUser{OrgID: orgID, UID: userID}) {
+		if unittest.BeanExists(t, &organization.OrgUser{OrgID: org.ID, UID: user.ID}) {
 			expectedNumMembers--
 		}
-		assert.NoError(t, RemoveOrgUser(db.DefaultContext, orgID, userID))
+		assert.NoError(t, RemoveOrgUser(db.DefaultContext, org, user))
-		unittest.AssertNotExistsBean(t, &organization.OrgUser{OrgID: orgID, UID: userID})
+		unittest.AssertNotExistsBean(t, &organization.OrgUser{OrgID: org.ID, UID: user.ID})
-		org = unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: orgID})
+		org = unittest.AssertExistsAndLoadBean(t, &organization.Organization{ID: org.ID})
 		assert.EqualValues(t, expectedNumMembers, org.NumMembers)
 	}
-	testSuccess(3, 4)
-	testSuccess(3, 4)
 
-	err := RemoveOrgUser(db.DefaultContext, 7, 5)
+	org3 := unittest.AssertExistsAndLoadBean(t, &organization.Organization{ID: 3})
+	org7 := unittest.AssertExistsAndLoadBean(t, &organization.Organization{ID: 7})
+	user4 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 4})
+	user5 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 5})
+
+	testSuccess(org3, user4)
+
+	org3 = unittest.AssertExistsAndLoadBean(t, &organization.Organization{ID: 3})
+	testSuccess(org3, user4)
+
+	err := RemoveOrgUser(db.DefaultContext, org7, user5)
 	assert.Error(t, err)
 	assert.True(t, organization.IsErrLastOrgOwner(err))
-	unittest.AssertExistsAndLoadBean(t, &organization.OrgUser{OrgID: 7, UID: 5})
+	unittest.AssertExistsAndLoadBean(t, &organization.OrgUser{OrgID: org7.ID, UID: user5.ID})
 	unittest.CheckConsistencyFor(t, &user_model.User{}, &organization.Team{})
 }

models/organization/org.go

@@ -400,6 +400,7 @@ func DeleteOrganization(ctx context.Context, org *Organization) error {
 		&TeamUnit{OrgID: org.ID},
 		&TeamInvite{OrgID: org.ID},
 		&secret_model.Secret{OwnerID: org.ID},
+		&user_model.Blocking{BlockerID: org.ID},
 	); err != nil {
 		return fmt.Errorf("DeleteBeans: %w", err)
 	}

models/organization/team_user.go

@@ -30,14 +30,6 @@ func IsTeamMember(ctx context.Context, orgID, teamID, userID int64) (bool, error
 		Exist()
 }
 
-// GetTeamUsersByTeamID returns team users for a team
-func GetTeamUsersByTeamID(ctx context.Context, teamID int64) ([]*TeamUser, error) {
-	teamUsers := make([]*TeamUser, 0, 10)
-	return teamUsers, db.GetEngine(ctx).
-		Where("team_id=?", teamID).
-		Find(&teamUsers)
-}
-
 // SearchMembersOptions holds the search options
 type SearchMembersOptions struct {
 	db.ListOptions

models/perm/access/access.go

@@ -128,9 +128,9 @@ func refreshAccesses(ctx context.Context, repo *repo_model.Repository, accessMap
 
 // refreshCollaboratorAccesses retrieves repository collaborations with their access modes.
 func refreshCollaboratorAccesses(ctx context.Context, repoID int64, accessMap map[int64]*userAccess) error {
-	collaborators, err := repo_model.GetCollaborators(ctx, repoID, db.ListOptions{})
+	collaborators, _, err := repo_model.GetCollaborators(ctx, &repo_model.FindCollaborationOptions{RepoID: repoID})
 	if err != nil {
-		return fmt.Errorf("getCollaborations: %w", err)
+		return fmt.Errorf("GetCollaborators: %w", err)
 	}
 	for _, c := range collaborators {
 		if c.User.IsGhost() {

models/repo/collaboration.go

@@ -36,14 +36,44 @@ type Collaborator struct {
 	Collaboration *Collaboration
 }
 
+type FindCollaborationOptions struct {
+	db.ListOptions
+	RepoID         int64
+	RepoOwnerID    int64
+	CollaboratorID int64
+}
+
+func (opts *FindCollaborationOptions) ToConds() builder.Cond {
+	cond := builder.NewCond()
+	if opts.RepoID != 0 {
+		cond = cond.And(builder.Eq{"collaboration.repo_id": opts.RepoID})
+	}
+	if opts.RepoOwnerID != 0 {
+		cond = cond.And(builder.Eq{"repository.owner_id": opts.RepoOwnerID})
+	}
+	if opts.CollaboratorID != 0 {
+		cond = cond.And(builder.Eq{"collaboration.user_id": opts.CollaboratorID})
+	}
+	return cond
+}
+
+func (opts *FindCollaborationOptions) ToJoins() []db.JoinFunc {
+	if opts.RepoOwnerID != 0 {
+		return []db.JoinFunc{
+			func(e db.Engine) error {
+				e.Join("INNER", "repository", "repository.id = collaboration.repo_id")
+				return nil
+			},
+		}
+	}
+	return nil
+}
+
 // GetCollaborators returns the collaborators for a repository
-func GetCollaborators(ctx context.Context, repoID int64, listOptions db.ListOptions) ([]*Collaborator, error) {
+func GetCollaborators(ctx context.Context, opts *FindCollaborationOptions) ([]*Collaborator, int64, error) {
-	collaborations, err := db.Find[Collaboration](ctx, FindCollaborationOptions{
+	collaborations, total, err := db.FindAndCount[Collaboration](ctx, opts)
-		ListOptions: listOptions,
-		RepoID:      repoID,
-	})
 	if err != nil {
-		return nil, fmt.Errorf("db.Find[Collaboration]: %w", err)
+		return nil, 0, fmt.Errorf("db.FindAndCount[Collaboration]: %w", err)
 	}
 
 	collaborators := make([]*Collaborator, 0, len(collaborations))
@@ -54,7 +84,7 @@ func GetCollaborators(ctx context.Context, repoID int64, listOptions db.ListOpti
 
 	usersMap := make(map[int64]*user_model.User)
 	if err := db.GetEngine(ctx).In("id", userIDs).Find(&usersMap); err != nil {
-		return nil, fmt.Errorf("Find users map by user ids: %w", err)
+		return nil, 0, fmt.Errorf("Find users map by user ids: %w", err)
 	}
 
 	for _, c := range collaborations {
@@ -67,7 +97,7 @@ func GetCollaborators(ctx context.Context, repoID int64, listOptions db.ListOpti
 			Collaboration: c,
 		})
 	}
-	return collaborators, nil
+	return collaborators, total, nil
 }
 
 // GetCollaboration get collaboration for a repository id with a user id
@@ -88,15 +118,6 @@ func IsCollaborator(ctx context.Context, repoID, userID int64) (bool, error) {
 	return db.GetEngine(ctx).Get(&Collaboration{RepoID: repoID, UserID: userID})
 }
 
-type FindCollaborationOptions struct {
-	db.ListOptions
-	RepoID int64
-}
-
-func (opts FindCollaborationOptions) ToConds() builder.Cond {
-	return builder.And(builder.Eq{"repo_id": opts.RepoID})
-}
-
 // ChangeCollaborationAccessMode sets new access mode for the collaboration.
 func ChangeCollaborationAccessMode(ctx context.Context, repo *Repository, uid int64, mode perm.AccessMode) error {
 	// Discard invalid input

models/repo/collaboration_test.go

@@ -19,7 +19,7 @@ func TestRepository_GetCollaborators(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 	test := func(repoID int64) {
 		repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: repoID})
-		collaborators, err := repo_model.GetCollaborators(db.DefaultContext, repo.ID, db.ListOptions{})
+		collaborators, _, err := repo_model.GetCollaborators(db.DefaultContext, &repo_model.FindCollaborationOptions{RepoID: repo.ID})
 		assert.NoError(t, err)
 		expectedLen, err := db.GetEngine(db.DefaultContext).Count(&repo_model.Collaboration{RepoID: repoID})
 		assert.NoError(t, err)
@@ -37,11 +37,17 @@ func TestRepository_GetCollaborators(t *testing.T) {
 	// Test db.ListOptions
 	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 22})
 
-	collaborators1, err := repo_model.GetCollaborators(db.DefaultContext, repo.ID, db.ListOptions{PageSize: 1, Page: 1})
+	collaborators1, _, err := repo_model.GetCollaborators(db.DefaultContext, &repo_model.FindCollaborationOptions{
+		ListOptions: db.ListOptions{PageSize: 1, Page: 1},
+		RepoID:      repo.ID,
+	})
 	assert.NoError(t, err)
 	assert.Len(t, collaborators1, 1)
 
-	collaborators2, err := repo_model.GetCollaborators(db.DefaultContext, repo.ID, db.ListOptions{PageSize: 1, Page: 2})
+	collaborators2, _, err := repo_model.GetCollaborators(db.DefaultContext, &repo_model.FindCollaborationOptions{
+		ListOptions: db.ListOptions{PageSize: 1, Page: 2},
+		RepoID:      repo.ID,
+	})
 	assert.NoError(t, err)
 	assert.Len(t, collaborators2, 1)
 
@@ -85,31 +91,6 @@ func TestRepository_ChangeCollaborationAccessMode(t *testing.T) {
 	unittest.CheckConsistencyFor(t, &repo_model.Repository{ID: repo.ID})
 }
 
-func TestRepository_CountCollaborators(t *testing.T) {
-	assert.NoError(t, unittest.PrepareTestDatabase())
-
-	repo1 := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 4})
-	count, err := db.Count[repo_model.Collaboration](db.DefaultContext, repo_model.FindCollaborationOptions{
-		RepoID: repo1.ID,
-	})
-	assert.NoError(t, err)
-	assert.EqualValues(t, 2, count)
-
-	repo2 := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 22})
-	count, err = db.Count[repo_model.Collaboration](db.DefaultContext, repo_model.FindCollaborationOptions{
-		RepoID: repo2.ID,
-	})
-	assert.NoError(t, err)
-	assert.EqualValues(t, 2, count)
-
-	// Non-existent repository.
-	count, err = db.Count[repo_model.Collaboration](db.DefaultContext, repo_model.FindCollaborationOptions{
-		RepoID: unittest.NonexistentID,
-	})
-	assert.NoError(t, err)
-	assert.EqualValues(t, 0, count)
-}
-
 func TestRepository_IsOwnerMemberCollaborator(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 

models/repo/repo_test.go

@@ -64,16 +64,17 @@ func TestRepoAPIURL(t *testing.T) {
 
 func TestWatchRepo(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
-	const repoID = 3
-	const userID = 2
 
-	assert.NoError(t, repo_model.WatchRepo(db.DefaultContext, userID, repoID, true))
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 3})
-	unittest.AssertExistsAndLoadBean(t, &repo_model.Watch{RepoID: repoID, UserID: userID})
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
-	unittest.CheckConsistencyFor(t, &repo_model.Repository{ID: repoID})
 
-	assert.NoError(t, repo_model.WatchRepo(db.DefaultContext, userID, repoID, false))
+	assert.NoError(t, repo_model.WatchRepo(db.DefaultContext, user, repo, true))
-	unittest.AssertNotExistsBean(t, &repo_model.Watch{RepoID: repoID, UserID: userID})
+	unittest.AssertExistsAndLoadBean(t, &repo_model.Watch{RepoID: repo.ID, UserID: user.ID})
-	unittest.CheckConsistencyFor(t, &repo_model.Repository{ID: repoID})
+	unittest.CheckConsistencyFor(t, &repo_model.Repository{ID: repo.ID})
+
+	assert.NoError(t, repo_model.WatchRepo(db.DefaultContext, user, repo, false))
+	unittest.AssertNotExistsBean(t, &repo_model.Watch{RepoID: repo.ID, UserID: user.ID})
+	unittest.CheckConsistencyFor(t, &repo_model.Repository{ID: repo.ID})
 }
 
 func TestMetas(t *testing.T) {

models/repo/star.go

@@ -24,26 +24,30 @@ func init() {
 }
 
 // StarRepo or unstar repository.
-func StarRepo(ctx context.Context, userID, repoID int64, star bool) error {
+func StarRepo(ctx context.Context, doer *user_model.User, repo *Repository, star bool) error {
 	ctx, committer, err := db.TxContext(ctx)
 	if err != nil {
 		return err
 	}
 	defer committer.Close()
-	staring := IsStaring(ctx, userID, repoID)
+	staring := IsStaring(ctx, doer.ID, repo.ID)
 
 	if star {
+		if user_model.IsUserBlockedBy(ctx, doer, repo.OwnerID) {
+			return user_model.ErrBlockedUser
+		}
+
 		if staring {
 			return nil
 		}
 
-		if err := db.Insert(ctx, &Star{UID: userID, RepoID: repoID}); err != nil {
+		if err := db.Insert(ctx, &Star{UID: doer.ID, RepoID: repo.ID}); err != nil {
 			return err
 		}
-		if _, err := db.Exec(ctx, "UPDATE `repository` SET num_stars = num_stars + 1 WHERE id = ?", repoID); err != nil {
+		if _, err := db.Exec(ctx, "UPDATE `repository` SET num_stars = num_stars + 1 WHERE id = ?", repo.ID); err != nil {
 			return err
 		}
-		if _, err := db.Exec(ctx, "UPDATE `user` SET num_stars = num_stars + 1 WHERE id = ?", userID); err != nil {
+		if _, err := db.Exec(ctx, "UPDATE `user` SET num_stars = num_stars + 1 WHERE id = ?", doer.ID); err != nil {
 			return err
 		}
 	} else {
@@ -51,13 +55,13 @@ func StarRepo(ctx context.Context, userID, repoID int64, star bool) error {
 			return nil
 		}
 
-		if _, err := db.DeleteByBean(ctx, &Star{UID: userID, RepoID: repoID}); err != nil {
+		if _, err := db.DeleteByBean(ctx, &Star{UID: doer.ID, RepoID: repo.ID}); err != nil {
 			return err
 		}
-		if _, err := db.Exec(ctx, "UPDATE `repository` SET num_stars = num_stars - 1 WHERE id = ?", repoID); err != nil {
+		if _, err := db.Exec(ctx, "UPDATE `repository` SET num_stars = num_stars - 1 WHERE id = ?", repo.ID); err != nil {
 			return err
 		}
-		if _, err := db.Exec(ctx, "UPDATE `user` SET num_stars = num_stars - 1 WHERE id = ?", userID); err != nil {
+		if _, err := db.Exec(ctx, "UPDATE `user` SET num_stars = num_stars - 1 WHERE id = ?", doer.ID); err != nil {
 			return err
 		}
 	}

models/repo/star_test.go

@@ -9,21 +9,24 @@ import (
 	"code.gitea.io/gitea/models/db"
 	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/models/unittest"
+	user_model "code.gitea.io/gitea/models/user"
 
 	"github.com/stretchr/testify/assert"
 )
 
 func TestStarRepo(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
-	const userID = 2
+
-	const repoID = 1
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
-	unittest.AssertNotExistsBean(t, &repo_model.Star{UID: userID, RepoID: repoID})
+	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
-	assert.NoError(t, repo_model.StarRepo(db.DefaultContext, userID, repoID, true))
+
-	unittest.AssertExistsAndLoadBean(t, &repo_model.Star{UID: userID, RepoID: repoID})
+	unittest.AssertNotExistsBean(t, &repo_model.Star{UID: user.ID, RepoID: repo.ID})
-	assert.NoError(t, repo_model.StarRepo(db.DefaultContext, userID, repoID, true))
+	assert.NoError(t, repo_model.StarRepo(db.DefaultContext, user, repo, true))
-	unittest.AssertExistsAndLoadBean(t, &repo_model.Star{UID: userID, RepoID: repoID})
+	unittest.AssertExistsAndLoadBean(t, &repo_model.Star{UID: user.ID, RepoID: repo.ID})
-	assert.NoError(t, repo_model.StarRepo(db.DefaultContext, userID, repoID, false))
+	assert.NoError(t, repo_model.StarRepo(db.DefaultContext, user, repo, true))
-	unittest.AssertNotExistsBean(t, &repo_model.Star{UID: userID, RepoID: repoID})
+	unittest.AssertExistsAndLoadBean(t, &repo_model.Star{UID: user.ID, RepoID: repo.ID})
+	assert.NoError(t, repo_model.StarRepo(db.DefaultContext, user, repo, false))
+	unittest.AssertNotExistsBean(t, &repo_model.Star{UID: user.ID, RepoID: repo.ID})
 }
 
 func TestIsStaring(t *testing.T) {
@@ -54,17 +57,18 @@ func TestRepository_GetStargazers2(t *testing.T) {
 
 func TestClearRepoStars(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
-	const userID = 2
-	const repoID = 1
-	unittest.AssertNotExistsBean(t, &repo_model.Star{UID: userID, RepoID: repoID})
-	assert.NoError(t, repo_model.StarRepo(db.DefaultContext, userID, repoID, true))
-	unittest.AssertExistsAndLoadBean(t, &repo_model.Star{UID: userID, RepoID: repoID})
-	assert.NoError(t, repo_model.StarRepo(db.DefaultContext, userID, repoID, false))
-	unittest.AssertNotExistsBean(t, &repo_model.Star{UID: userID, RepoID: repoID})
-	assert.NoError(t, repo_model.ClearRepoStars(db.DefaultContext, repoID))
-	unittest.AssertNotExistsBean(t, &repo_model.Star{UID: userID, RepoID: repoID})
 
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
 	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
+
+	unittest.AssertNotExistsBean(t, &repo_model.Star{UID: user.ID, RepoID: repo.ID})
+	assert.NoError(t, repo_model.StarRepo(db.DefaultContext, user, repo, true))
+	unittest.AssertExistsAndLoadBean(t, &repo_model.Star{UID: user.ID, RepoID: repo.ID})
+	assert.NoError(t, repo_model.StarRepo(db.DefaultContext, user, repo, false))
+	unittest.AssertNotExistsBean(t, &repo_model.Star{UID: user.ID, RepoID: repo.ID})
+	assert.NoError(t, repo_model.ClearRepoStars(db.DefaultContext, repo.ID))
+	unittest.AssertNotExistsBean(t, &repo_model.Star{UID: user.ID, RepoID: repo.ID})
+
 	gazers, err := repo_model.GetStargazers(db.DefaultContext, repo, db.ListOptions{Page: 0})
 	assert.NoError(t, err)
 	assert.Len(t, gazers, 0)

models/repo/user_repo.go

@@ -16,47 +16,82 @@ import (
 	"xorm.io/builder"
 )
 
+type StarredReposOptions struct {
+	db.ListOptions
+	StarrerID      int64
+	RepoOwnerID    int64
+	IncludePrivate bool
+}
+
+func (opts *StarredReposOptions) ToConds() builder.Cond {
+	var cond builder.Cond = builder.Eq{
+		"star.uid": opts.StarrerID,
+	}
+	if opts.RepoOwnerID != 0 {
+		cond = cond.And(builder.Eq{
+			"repository.owner_id": opts.RepoOwnerID,
+		})
+	}
+	if !opts.IncludePrivate {
+		cond = cond.And(builder.Eq{
+			"repository.is_private": false,
+		})
+	}
+	return cond
+}
+
+func (opts *StarredReposOptions) ToJoins() []db.JoinFunc {
+	return []db.JoinFunc{
+		func(e db.Engine) error {
+			e.Join("INNER", "star", "`repository`.id=`star`.repo_id")
+			return nil
+		},
+	}
+}
+
 // GetStarredRepos returns the repos starred by a particular user
-func GetStarredRepos(ctx context.Context, userID int64, private bool, listOptions db.ListOptions) ([]*Repository, error) {
+func GetStarredRepos(ctx context.Context, opts *StarredReposOptions) ([]*Repository, error) {
-	sess := db.GetEngine(ctx).
+	return db.Find[Repository](ctx, opts)
-		Where("star.uid=?", userID).
-		Join("LEFT", "star", "`repository`.id=`star`.repo_id")
-	if !private {
-		sess = sess.And("is_private=?", false)
 }
 
-	if listOptions.Page != 0 {
+type WatchedReposOptions struct {
-		sess = db.SetSessionPagination(sess, &listOptions)
+	db.ListOptions
-
+	WatcherID      int64
-		repos := make([]*Repository, 0, listOptions.PageSize)
+	RepoOwnerID    int64
-		return repos, sess.Find(&repos)
+	IncludePrivate bool
 }
 
-	repos := make([]*Repository, 0, 10)
+func (opts *WatchedReposOptions) ToConds() builder.Cond {
-	return repos, sess.Find(&repos)
+	var cond builder.Cond = builder.Eq{
+		"watch.user_id": opts.WatcherID,
+	}
+	if opts.RepoOwnerID != 0 {
+		cond = cond.And(builder.Eq{
+			"repository.owner_id": opts.RepoOwnerID,
+		})
+	}
+	if !opts.IncludePrivate {
+		cond = cond.And(builder.Eq{
+			"repository.is_private": false,
+		})
+	}
+	return cond.And(builder.Neq{
+		"watch.mode": WatchModeDont,
+	})
+}
+
+func (opts *WatchedReposOptions) ToJoins() []db.JoinFunc {
+	return []db.JoinFunc{
+		func(e db.Engine) error {
+			e.Join("INNER", "watch", "`repository`.id=`watch`.repo_id")
+			return nil
+		},
+	}
 }
 
 // GetWatchedRepos returns the repos watched by a particular user
-func GetWatchedRepos(ctx context.Context, userID int64, private bool, listOptions db.ListOptions) ([]*Repository, int64, error) {
+func GetWatchedRepos(ctx context.Context, opts *WatchedReposOptions) ([]*Repository, int64, error) {
-	sess := db.GetEngine(ctx).
+	return db.FindAndCount[Repository](ctx, opts)
-		Where("watch.user_id=?", userID).
-		And("`watch`.mode<>?", WatchModeDont).
-		Join("LEFT", "watch", "`repository`.id=`watch`.repo_id")
-	if !private {
-		sess = sess.And("is_private=?", false)
-	}
-
-	if listOptions.Page != 0 {
-		sess = db.SetSessionPagination(sess, &listOptions)
-
-		repos := make([]*Repository, 0, listOptions.PageSize)
-		total, err := sess.FindAndCount(&repos)
-		return repos, total, err
-	}
-
-	repos := make([]*Repository, 0, 10)
-	total, err := sess.FindAndCount(&repos)
-	return repos, total, err
 }
 
 // GetRepoAssignees returns all users that have write access and can be assigned to issues

models/repo/user_repo_test.go

@@ -25,10 +25,8 @@ func TestRepoAssignees(t *testing.T) {
 	repo21 := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 21})
 	users, err = repo_model.GetRepoAssignees(db.DefaultContext, repo21)
 	assert.NoError(t, err)
-	assert.Len(t, users, 3)
+	assert.Len(t, users, 4)
-	assert.Equal(t, users[0].ID, int64(15))
+	assert.ElementsMatch(t, []int64{10, 15, 16, 18}, []int64{users[0].ID, users[1].ID, users[2].ID, users[3].ID})
-	assert.Equal(t, users[1].ID, int64(18))
-	assert.Equal(t, users[2].ID, int64(16))
 }
 
 func TestRepoGetReviewers(t *testing.T) {

models/repo/watch.go

@@ -104,29 +104,23 @@ func watchRepoMode(ctx context.Context, watch Watch, mode WatchMode) (err error)
 	return err
 }
 
-// WatchRepoMode watch repository in specific mode.
-func WatchRepoMode(ctx context.Context, userID, repoID int64, mode WatchMode) (err error) {
-	var watch Watch
-	if watch, err = GetWatch(ctx, userID, repoID); err != nil {
-		return err
-	}
-	return watchRepoMode(ctx, watch, mode)
-}
-
 // WatchRepo watch or unwatch repository.
-func WatchRepo(ctx context.Context, userID, repoID int64, doWatch bool) (err error) {
+func WatchRepo(ctx context.Context, doer *user_model.User, repo *Repository, doWatch bool) error {
-	var watch Watch
+	watch, err := GetWatch(ctx, doer.ID, repo.ID)
-	if watch, err = GetWatch(ctx, userID, repoID); err != nil {
+	if err != nil {
 		return err
 	}
 	if !doWatch && watch.Mode == WatchModeAuto {
-		err = watchRepoMode(ctx, watch, WatchModeDont)
+		return watchRepoMode(ctx, watch, WatchModeDont)
 	} else if !doWatch {
-		err = watchRepoMode(ctx, watch, WatchModeNone)
+		return watchRepoMode(ctx, watch, WatchModeNone)
-	} else {
-		err = watchRepoMode(ctx, watch, WatchModeNormal)
 	}
-	return err
+
+	if user_model.IsUserBlockedBy(ctx, doer, repo.OwnerID) {
+		return user_model.ErrBlockedUser
+	}
+
+	return watchRepoMode(ctx, watch, WatchModeNormal)
 }
 
 // GetWatchers returns all watchers of given repository.

models/repo/watch_test.go

@@ -9,6 +9,7 @@ import (
 	"code.gitea.io/gitea/models/db"
 	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/models/unittest"
+	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/setting"
 
 	"github.com/stretchr/testify/assert"
@@ -64,6 +65,8 @@ func TestWatchIfAuto(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
+	user12 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 12})
+
 	watchers, err := repo_model.GetRepoWatchers(db.DefaultContext, repo.ID, db.ListOptions{Page: 1})
 	assert.NoError(t, err)
 	assert.Len(t, watchers, repo.NumWatches)
@@ -105,7 +108,7 @@ func TestWatchIfAuto(t *testing.T) {
 	assert.Len(t, watchers, prevCount+1)
 
 	// Should remove watch, inhibit from adding auto
-	assert.NoError(t, repo_model.WatchRepo(db.DefaultContext, 12, 1, false))
+	assert.NoError(t, repo_model.WatchRepo(db.DefaultContext, user12, repo, false))
 	watchers, err = repo_model.GetRepoWatchers(db.DefaultContext, repo.ID, db.ListOptions{Page: 1})
 	assert.NoError(t, err)
 	assert.Len(t, watchers, prevCount)
@@ -116,24 +119,3 @@ func TestWatchIfAuto(t *testing.T) {
 	assert.NoError(t, err)
 	assert.Len(t, watchers, prevCount)
 }
-
-func TestWatchRepoMode(t *testing.T) {
-	assert.NoError(t, unittest.PrepareTestDatabase())
-
-	unittest.AssertCount(t, &repo_model.Watch{UserID: 12, RepoID: 1}, 0)
-
-	assert.NoError(t, repo_model.WatchRepoMode(db.DefaultContext, 12, 1, repo_model.WatchModeAuto))
-	unittest.AssertCount(t, &repo_model.Watch{UserID: 12, RepoID: 1}, 1)
-	unittest.AssertCount(t, &repo_model.Watch{UserID: 12, RepoID: 1, Mode: repo_model.WatchModeAuto}, 1)
-
-	assert.NoError(t, repo_model.WatchRepoMode(db.DefaultContext, 12, 1, repo_model.WatchModeNormal))
-	unittest.AssertCount(t, &repo_model.Watch{UserID: 12, RepoID: 1}, 1)
-	unittest.AssertCount(t, &repo_model.Watch{UserID: 12, RepoID: 1, Mode: repo_model.WatchModeNormal}, 1)
-
-	assert.NoError(t, repo_model.WatchRepoMode(db.DefaultContext, 12, 1, repo_model.WatchModeDont))
-	unittest.AssertCount(t, &repo_model.Watch{UserID: 12, RepoID: 1}, 1)
-	unittest.AssertCount(t, &repo_model.Watch{UserID: 12, RepoID: 1, Mode: repo_model.WatchModeDont}, 1)
-
-	assert.NoError(t, repo_model.WatchRepoMode(db.DefaultContext, 12, 1, repo_model.WatchModeNone))
-	unittest.AssertCount(t, &repo_model.Watch{UserID: 12, RepoID: 1}, 0)
-}

models/repo_transfer.go

@@ -13,6 +13,8 @@ import (
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/timeutil"
+
+	"xorm.io/builder"
 )
 
 // RepoTransfer is used to manage repository transfers
@@ -94,21 +96,46 @@ func (r *RepoTransfer) CanUserAcceptTransfer(ctx context.Context, u *user_model.
 	return allowed
 }
 
+type PendingRepositoryTransferOptions struct {
+	RepoID      int64
+	SenderID    int64
+	RecipientID int64
+}
+
+func (opts *PendingRepositoryTransferOptions) ToConds() builder.Cond {
+	cond := builder.NewCond()
+	if opts.RepoID != 0 {
+		cond = cond.And(builder.Eq{"repo_id": opts.RepoID})
+	}
+	if opts.SenderID != 0 {
+		cond = cond.And(builder.Eq{"doer_id": opts.SenderID})
+	}
+	if opts.RecipientID != 0 {
+		cond = cond.And(builder.Eq{"recipient_id": opts.RecipientID})
+	}
+	return cond
+}
+
+func GetPendingRepositoryTransfers(ctx context.Context, opts *PendingRepositoryTransferOptions) ([]*RepoTransfer, error) {
+	transfers := make([]*RepoTransfer, 0, 10)
+	return transfers, db.GetEngine(ctx).
+		Where(opts.ToConds()).
+		Find(&transfers)
+}
+
 // GetPendingRepositoryTransfer fetches the most recent and ongoing transfer
 // process for the repository
 func GetPendingRepositoryTransfer(ctx context.Context, repo *repo_model.Repository) (*RepoTransfer, error) {
-	transfer := new(RepoTransfer)
+	transfers, err := GetPendingRepositoryTransfers(ctx, &PendingRepositoryTransferOptions{RepoID: repo.ID})
-
-	has, err := db.GetEngine(ctx).Where("repo_id = ? ", repo.ID).Get(transfer)
 	if err != nil {
 		return nil, err
 	}
 
-	if !has {
+	if len(transfers) != 1 {
 		return nil, ErrNoPendingRepoTransfer{RepoID: repo.ID}
 	}
 
-	return transfer, nil
+	return transfers[0], nil
 }
 
 func DeleteRepositoryTransfer(ctx context.Context, repoID int64) error {

models/user/block.go

@@ -0,0 +1,123 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package user
+
+import (
+	"context"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/modules/container"
+	"code.gitea.io/gitea/modules/timeutil"
+	"code.gitea.io/gitea/modules/util"
+
+	"xorm.io/builder"
+)
+
+var (
+	ErrBlockOrganization = util.NewInvalidArgumentErrorf("cannot block an organization")
+	ErrCanNotBlock       = util.NewInvalidArgumentErrorf("cannot block the user")
+	ErrCanNotUnblock     = util.NewInvalidArgumentErrorf("cannot unblock the user")
+	ErrBlockedUser       = util.NewPermissionDeniedErrorf("user is blocked")
+)
+
+type Blocking struct {
+	ID          int64 `xorm:"pk autoincr"`
+	BlockerID   int64 `xorm:"UNIQUE(block)"`
+	Blocker     *User `xorm:"-"`
+	BlockeeID   int64 `xorm:"UNIQUE(block)"`
+	Blockee     *User `xorm:"-"`
+	Note        string
+	CreatedUnix timeutil.TimeStamp `xorm:"INDEX created"`
+}
+
+func (*Blocking) TableName() string {
+	return "user_blocking"
+}
+
+func init() {
+	db.RegisterModel(new(Blocking))
+}
+
+func UpdateBlockingNote(ctx context.Context, id int64, note string) error {
+	_, err := db.GetEngine(ctx).ID(id).Cols("note").Update(&Blocking{Note: note})
+	return err
+}
+
+func IsUserBlockedBy(ctx context.Context, blockee *User, blockerIDs ...int64) bool {
+	if len(blockerIDs) == 0 {
+		return false
+	}
+
+	if blockee.IsAdmin {
+		return false
+	}
+
+	cond := builder.Eq{"user_blocking.blockee_id": blockee.ID}.
+		And(builder.In("user_blocking.blocker_id", blockerIDs))
+
+	has, _ := db.GetEngine(ctx).Where(cond).Exist(&Blocking{})
+	return has
+}
+
+type FindBlockingOptions struct {
+	db.ListOptions
+	BlockerID int64
+	BlockeeID int64
+}
+
+func (opts *FindBlockingOptions) ToConds() builder.Cond {
+	cond := builder.NewCond()
+	if opts.BlockerID != 0 {
+		cond = cond.And(builder.Eq{"user_blocking.blocker_id": opts.BlockerID})
+	}
+	if opts.BlockeeID != 0 {
+		cond = cond.And(builder.Eq{"user_blocking.blockee_id": opts.BlockeeID})
+	}
+	return cond
+}
+
+func FindBlockings(ctx context.Context, opts *FindBlockingOptions) ([]*Blocking, int64, error) {
+	return db.FindAndCount[Blocking](ctx, opts)
+}
+
+func GetBlocking(ctx context.Context, blockerID, blockeeID int64) (*Blocking, error) {
+	blocks, _, err := FindBlockings(ctx, &FindBlockingOptions{
+		BlockerID: blockerID,
+		BlockeeID: blockeeID,
+	})
+	if err != nil {
+		return nil, err
+	}
+	if len(blocks) == 0 {
+		return nil, nil
+	}
+	return blocks[0], nil
+}
+
+type BlockingList []*Blocking
+
+func (blocks BlockingList) LoadAttributes(ctx context.Context) error {
+	ids := make(container.Set[int64], len(blocks)*2)
+	for _, b := range blocks {
+		ids.Add(b.BlockerID)
+		ids.Add(b.BlockeeID)
+	}
+
+	userList, err := GetUsersByIDs(ctx, ids.Values())
+	if err != nil {
+		return err
+	}
+
+	userMap := make(map[int64]*User, len(userList))
+	for _, u := range userList {
+		userMap[u.ID] = u
+	}
+
+	for _, b := range blocks {
+		b.Blocker = userMap[b.BlockerID]
+		b.Blockee = userMap[b.BlockeeID]
+	}
+
+	return nil
+}

models/user/follow.go

@@ -29,26 +29,30 @@ func IsFollowing(ctx context.Context, userID, followID int64) bool {
 }
 
 // FollowUser marks someone be another's follower.
-func FollowUser(ctx context.Context, userID, followID int64) (err error) {
+func FollowUser(ctx context.Context, user, follow *User) (err error) {
-	if userID == followID || IsFollowing(ctx, userID, followID) {
+	if user.ID == follow.ID || IsFollowing(ctx, user.ID, follow.ID) {
 		return nil
 	}
 
+	if IsUserBlockedBy(ctx, user, follow.ID) || IsUserBlockedBy(ctx, follow, user.ID) {
+		return ErrBlockedUser
+	}
+
 	ctx, committer, err := db.TxContext(ctx)
 	if err != nil {
 		return err
 	}
 	defer committer.Close()
 
-	if err = db.Insert(ctx, &Follow{UserID: userID, FollowID: followID}); err != nil {
+	if err = db.Insert(ctx, &Follow{UserID: user.ID, FollowID: follow.ID}); err != nil {
 		return err
 	}
 
-	if _, err = db.Exec(ctx, "UPDATE `user` SET num_followers = num_followers + 1 WHERE id = ?", followID); err != nil {
+	if _, err = db.Exec(ctx, "UPDATE `user` SET num_followers = num_followers + 1 WHERE id = ?", follow.ID); err != nil {
 		return err
 	}
 
-	if _, err = db.Exec(ctx, "UPDATE `user` SET num_following = num_following + 1 WHERE id = ?", userID); err != nil {
+	if _, err = db.Exec(ctx, "UPDATE `user` SET num_following = num_following + 1 WHERE id = ?", user.ID); err != nil {
 		return err
 	}
 	return committer.Commit()

models/user/user.go

@@ -1167,7 +1167,7 @@ func IsUserVisibleToViewer(ctx context.Context, u, viewer *User) bool {
 			return false
 		}
 
-		// If they follow - they see each over
+		// If they follow - they see each other
 		follower := IsFollowing(ctx, u.ID, viewer.ID)
 		if follower {
 			return true

models/user/user_test.go

@@ -399,14 +399,19 @@ func TestGetUserByOpenID(t *testing.T) {
 func TestFollowUser(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 
-	testSuccess := func(followerID, followedID int64) {
+	testSuccess := func(follower, followed *user_model.User) {
-		assert.NoError(t, user_model.FollowUser(db.DefaultContext, followerID, followedID))
+		assert.NoError(t, user_model.FollowUser(db.DefaultContext, follower, followed))
-		unittest.AssertExistsAndLoadBean(t, &user_model.Follow{UserID: followerID, FollowID: followedID})
+		unittest.AssertExistsAndLoadBean(t, &user_model.Follow{UserID: follower.ID, FollowID: followed.ID})
 	}
-	testSuccess(4, 2)
-	testSuccess(5, 2)
 
-	assert.NoError(t, user_model.FollowUser(db.DefaultContext, 2, 2))
+	user2 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	user4 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 4})
+	user5 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 5})
+
+	testSuccess(user4, user2)
+	testSuccess(user5, user2)
+
+	assert.NoError(t, user_model.FollowUser(db.DefaultContext, user2, user2))
 
 	unittest.CheckConsistencyFor(t, &user_model.User{})
 }

modules/repository/collaborator.go

@@ -16,6 +16,14 @@ import (
 )
 
 func AddCollaborator(ctx context.Context, repo *repo_model.Repository, u *user_model.User) error {
+	if err := repo.LoadOwner(ctx); err != nil {
+		return err
+	}
+
+	if user_model.IsUserBlockedBy(ctx, u, repo.OwnerID) || user_model.IsUserBlockedBy(ctx, repo.Owner, u.ID) {
+		return user_model.ErrBlockedUser
+	}
+
 	return db.WithTx(ctx, func(ctx context.Context) error {
 		has, err := db.Exist[repo_model.Collaboration](ctx, builder.Eq{
 			"repo_id": repo.ID,

modules/repository/create.go

@@ -153,7 +153,7 @@ func CreateRepositoryByExample(ctx context.Context, doer, u *user_model.User, re
 	}
 
 	if setting.Service.AutoWatchNewRepos {
-		if err = repo_model.WatchRepo(ctx, doer.ID, repo.ID, true); err != nil {
+		if err = repo_model.WatchRepo(ctx, doer, repo, true); err != nil {
 			return fmt.Errorf("WatchRepo: %w", err)
 		}
 	}

options/locale/locale_en-US.ini

@@ -632,6 +632,30 @@ form.name_reserved = The username "%s" is reserved.
 form.name_pattern_not_allowed = The pattern "%s" is not allowed in a username.
 form.name_chars_not_allowed = User name "%s" contains invalid characters.
 
+block.block = Block
+block.block.user = Block user
+block.block.org = Block user for organization
+block.block.failure = Failed to block user: %s
+block.unblock = Unblock
+block.unblock.failure = Failed to unblock user: %s
+block.blocked = You have blocked this user.
+block.title = Block a user
+block.info = Blocking a user prevents them from interacting with repositories, such as opening or commenting on pull requests or issues. Learn more about blocking a user.
+block.info_1 = Blocking a user prevents the following actions on your account and your repositories:
+block.info_2 = following your account
+block.info_3 = send you notifications by @mentioning your username
+block.info_4 = inviting you as a collaborator to their repositories
+block.info_5 = starring, forking or watching on repositories
+block.info_6 = opening and commenting on issues or pull requests
+block.info_7 = reacting on your comments in issues or pull requests
+block.user_to_block = User to block
+block.note = Note
+block.note.title = Optional note:
+block.note.info = The note is not visible to the blocked user.
+block.note.edit = Edit note
+block.list = Blocked users
+block.list.none = You have not blocked any users. 
+
 [settings]
 profile = Profile
 account = Account
@@ -969,6 +993,7 @@ fork_visibility_helper = The visibility of a forked repository cannot be changed
 fork_branch = Branch to be cloned to the fork
 all_branches = All branches
 fork_no_valid_owners = This repository can not be forked because there are no valid owners.
+fork.blocked_user = Cannot fork the repository because you are blocked by the repository owner.
 use_template = Use this template
 open_with_editor = Open with %s
 download_zip = Download ZIP
@@ -1144,6 +1169,7 @@ watch = Watch
 unstar = Unstar
 star = Star
 fork = Fork
+action.blocked_user = Cannot perform action because you are blocked by the repository owner.
 download_archive = Download Repository
 more_operations = More Operations
 
@@ -1394,6 +1420,8 @@ issues.new.assignees = Assignees
 issues.new.clear_assignees = Clear assignees
 issues.new.no_assignees = No Assignees
 issues.new.no_reviewers = No reviewers
+issues.new.blocked_user = Cannot create issue because you are blocked by the repository owner.
+issues.edit.blocked_user = Cannot edit content because you are blocked by the poster or repository owner.
 issues.choose.get_started = Get Started
 issues.choose.open_external_link = Open
 issues.choose.blank = Default
@@ -1509,6 +1537,7 @@ issues.close_comment_issue = Comment and Close
 issues.reopen_issue = Reopen
 issues.reopen_comment_issue = Comment and Reopen
 issues.create_comment = Comment
+issues.comment.blocked_user = Cannot create or edit comment because you are blocked by the poster or repository owner.
 issues.closed_at = `closed this issue <a id="%[1]s" href="#%[1]s">%[2]s</a>`
 issues.reopened_at = `reopened this issue <a id="%[1]s" href="#%[1]s">%[2]s</a>`
 issues.commit_ref_at = `referenced this issue from a commit <a id="%[1]s" href="#%[1]s">%[2]s</a>`
@@ -1707,6 +1736,7 @@ compare.compare_head = compare
 
 pulls.desc = Enable pull requests and code reviews.
 pulls.new = New Pull Request
+pulls.new.blocked_user = Cannot create pull request because you are blocked by the repository owner.
 pulls.view = View Pull Request
 pulls.compare_changes = New Pull Request
 pulls.allow_edits_from_maintainers = Allow edits from maintainers
@@ -2120,6 +2150,7 @@ settings.convert_fork_succeed = The fork has been converted into a regular repos
 settings.transfer = Transfer Ownership
 settings.transfer.rejected = Repository transfer was rejected.
 settings.transfer.success = Repository transfer was successful.
+settings.transfer.blocked_user = Cannot transfer repository because you are blocked by the new owner.
 settings.transfer_abort = Cancel transfer
 settings.transfer_abort_invalid = You cannot cancel a non existent repository transfer.
 settings.transfer_abort_success = The repository transfer to %s was successfully canceled.
@@ -2165,6 +2196,7 @@ settings.add_collaborator_success = The collaborator has been added.
 settings.add_collaborator_inactive_user = Cannot add an inactive user as a collaborator.
 settings.add_collaborator_owner = Cannot add an owner as a collaborator.
 settings.add_collaborator_duplicate = The collaborator is already added to this repository.
+settings.add_collaborator.blocked_user = The collaborator is blocked by the repository owner or vice versa.
 settings.delete_collaborator = Remove
 settings.collaborator_deletion = Remove Collaborator
 settings.collaborator_deletion_desc = Removing a collaborator will revoke their access to this repository. Continue?
@@ -2731,6 +2763,7 @@ teams.add_nonexistent_repo = "The repository you're trying to add doesn't exist,
 teams.add_duplicate_users = User is already a team member.
 teams.repos.none = No repositories could be accessed by this team.
 teams.members.none = No members on this team.
+teams.members.blocked_user = Cannot add the user because it is blocked by the organization.
 teams.specific_repositories = Specific repositories
 teams.specific_repositories_helper = Members will only have access to repositories explicitly added to the team. Selecting this <strong>will not</strong> automatically remove repositories already added with <i>All repositories</i>.
 teams.all_repositories = All repositories

routers/api/v1/api.go

@@ -1027,7 +1027,16 @@ func Routes() *web.Route {
 			m.Group("/avatar", func() {
 				m.Post("", bind(api.UpdateUserAvatarOption{}), user.UpdateAvatar)
 				m.Delete("", user.DeleteAvatar)
-			}, reqToken())
+			})
+
+			m.Group("/blocks", func() {
+				m.Get("", user.ListBlocks)
+				m.Group("/{username}", func() {
+					m.Get("", user.CheckUserBlock)
+					m.Put("", user.BlockUser)
+					m.Delete("", user.UnblockUser)
+				}, context.UserAssignmentAPI())
+			})
 		}, tokenRequiresScopes(auth_model.AccessTokenScopeCategoryUser), reqToken())
 
 		// Repositories (requires repo scope, org scope)
@@ -1477,6 +1486,15 @@ func Routes() *web.Route {
 				m.Delete("", org.DeleteAvatar)
 			}, reqToken(), reqOrgOwnership())
 			m.Get("/activities/feeds", org.ListOrgActivityFeeds)
+
+			m.Group("/blocks", func() {
+				m.Get("", org.ListBlocks)
+				m.Group("/{username}", func() {
+					m.Get("", org.CheckUserBlock)
+					m.Put("", org.BlockUser)
+					m.Delete("", org.UnblockUser)
+				})
+			}, reqToken(), reqOrgOwnership())
 		}, tokenRequiresScopes(auth_model.AccessTokenScopeCategoryOrganization), orgAssignment(true))
 		m.Group("/teams/{teamid}", func() {
 			m.Combo("").Get(reqToken(), org.GetTeam).

routers/api/v1/org/block.go

@@ -0,0 +1,116 @@
+// Copyright 2024 The Gitea Authors.
+// SPDX-License-Identifier: MIT
+
+package org
+
+import (
+	"code.gitea.io/gitea/routers/api/v1/shared"
+	"code.gitea.io/gitea/services/context"
+)
+
+func ListBlocks(ctx *context.APIContext) {
+	// swagger:operation GET /orgs/{org}/blocks organization organizationListBlocks
+	// ---
+	// summary: List users blocked by the organization
+	// parameters:
+	// - name: org
+	//   in: path
+	//   description: name of the organization
+	//   type: string
+	//   required: true
+	// - name: page
+	//   in: query
+	//   description: page number of results to return (1-based)
+	//   type: integer
+	// - name: limit
+	//   in: query
+	//   description: page size of results
+	//   type: integer
+	// produces:
+	// - application/json
+	// responses:
+	//   "200":
+	//     "$ref": "#/responses/UserList"
+
+	shared.ListBlocks(ctx, ctx.Org.Organization.AsUser())
+}
+
+func CheckUserBlock(ctx *context.APIContext) {
+	// swagger:operation GET /orgs/{org}/blocks/{username} organization organizationCheckUserBlock
+	// ---
+	// summary: Check if a user is blocked by the organization
+	// parameters:
+	// - name: org
+	//   in: path
+	//   description: name of the organization
+	//   type: string
+	//   required: true
+	// - name: username
+	//   in: path
+	//   description: user to check
+	//   type: string
+	//   required: true
+	// responses:
+	//   "204":
+	//     "$ref": "#/responses/empty"
+	//   "404":
+	//     "$ref": "#/responses/notFound"
+
+	shared.CheckUserBlock(ctx, ctx.Org.Organization.AsUser())
+}
+
+func BlockUser(ctx *context.APIContext) {
+	// swagger:operation PUT /orgs/{org}/blocks/{username} organization organizationBlockUser
+	// ---
+	// summary: Block a user
+	// parameters:
+	// - name: org
+	//   in: path
+	//   description: name of the organization
+	//   type: string
+	//   required: true
+	// - name: username
+	//   in: path
+	//   description: user to block
+	//   type: string
+	//   required: true
+	// - name: note
+	//   in: query
+	//   description: optional note for the block
+	//   type: string
+	// responses:
+	//   "204":
+	//     "$ref": "#/responses/empty"
+	//   "404":
+	//     "$ref": "#/responses/notFound"
+	//   "422":
+	//     "$ref": "#/responses/validationError"
+
+	shared.BlockUser(ctx, ctx.Org.Organization.AsUser())
+}
+
+func UnblockUser(ctx *context.APIContext) {
+	// swagger:operation DELETE /orgs/{org}/blocks/{username} organization organizationUnblockUser
+	// ---
+	// summary: Unblock a user
+	// parameters:
+	// - name: org
+	//   in: path
+	//   description: name of the organization
+	//   type: string
+	//   required: true
+	// - name: username
+	//   in: path
+	//   description: user to unblock
+	//   type: string
+	//   required: true
+	// responses:
+	//   "204":
+	//     "$ref": "#/responses/empty"
+	//   "404":
+	//     "$ref": "#/responses/notFound"
+	//   "422":
+	//     "$ref": "#/responses/validationError"
+
+	shared.UnblockUser(ctx, ctx.Doer, ctx.Org.Organization.AsUser())
+}

routers/api/v1/org/member.go

@@ -318,7 +318,7 @@ func DeleteMember(ctx *context.APIContext) {
 	if ctx.Written() {
 		return
 	}
-	if err := models.RemoveOrgUser(ctx, ctx.Org.Organization.ID, member.ID); err != nil {
+	if err := models.RemoveOrgUser(ctx, ctx.Org.Organization, member); err != nil {
 		ctx.Error(http.StatusInternalServerError, "RemoveOrgUser", err)
 	}
 	ctx.Status(http.StatusNoContent)

routers/api/v1/org/team.go

@@ -15,6 +15,7 @@ import (
 	access_model "code.gitea.io/gitea/models/perm/access"
 	repo_model "code.gitea.io/gitea/models/repo"
 	unit_model "code.gitea.io/gitea/models/unit"
+	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/log"
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/web"
@@ -486,6 +487,8 @@ func AddTeamMember(ctx *context.APIContext) {
 	// responses:
 	//   "204":
 	//     "$ref": "#/responses/empty"
+	//   "403":
+	//     "$ref": "#/responses/forbidden"
 	//   "404":
 	//     "$ref": "#/responses/notFound"
 
@@ -493,8 +496,12 @@ func AddTeamMember(ctx *context.APIContext) {
 	if ctx.Written() {
 		return
 	}
-	if err := models.AddTeamMember(ctx, ctx.Org.Team, u.ID); err != nil {
+	if err := models.AddTeamMember(ctx, ctx.Org.Team, u); err != nil {
-		ctx.Error(http.StatusInternalServerError, "AddMember", err)
+		if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.Error(http.StatusForbidden, "AddTeamMember", err)
+		} else {
+			ctx.Error(http.StatusInternalServerError, "AddTeamMember", err)
+		}
 		return
 	}
 	ctx.Status(http.StatusNoContent)
@@ -530,7 +537,7 @@ func RemoveTeamMember(ctx *context.APIContext) {
 		return
 	}
 
-	if err := models.RemoveTeamMember(ctx, ctx.Org.Team, u.ID); err != nil {
+	if err := models.RemoveTeamMember(ctx, ctx.Org.Team, u); err != nil {
 		ctx.Error(http.StatusInternalServerError, "RemoveTeamMember", err)
 		return
 	}

routers/api/v1/repo/collaborators.go

@@ -8,7 +8,6 @@ import (
 	"errors"
 	"net/http"
 
-	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/perm"
 	access_model "code.gitea.io/gitea/models/perm/access"
 	repo_model "code.gitea.io/gitea/models/repo"
@@ -54,15 +53,10 @@ func ListCollaborators(ctx *context.APIContext) {
 	//   "404":
 	//     "$ref": "#/responses/notFound"
 
-	count, err := db.Count[repo_model.Collaboration](ctx, repo_model.FindCollaborationOptions{
+	collaborators, total, err := repo_model.GetCollaborators(ctx, &repo_model.FindCollaborationOptions{
+		ListOptions: utils.GetListOptions(ctx),
 		RepoID:      ctx.Repo.Repository.ID,
 	})
-	if err != nil {
-		ctx.InternalServerError(err)
-		return
-	}
-
-	collaborators, err := repo_model.GetCollaborators(ctx, ctx.Repo.Repository.ID, utils.GetListOptions(ctx))
 	if err != nil {
 		ctx.Error(http.StatusInternalServerError, "ListCollaborators", err)
 		return
@@ -73,7 +67,7 @@ func ListCollaborators(ctx *context.APIContext) {
 		users[i] = convert.ToUser(ctx, collaborator.User, ctx.Doer)
 	}
 
-	ctx.SetTotalCountHeader(count)
+	ctx.SetTotalCountHeader(total)
 	ctx.JSON(http.StatusOK, users)
 }
 
@@ -159,6 +153,8 @@ func AddCollaborator(ctx *context.APIContext) {
 	// responses:
 	//   "204":
 	//     "$ref": "#/responses/empty"
+	//   "403":
+	//     "$ref": "#/responses/forbidden"
 	//   "404":
 	//     "$ref": "#/responses/notFound"
 	//   "422":
@@ -182,7 +178,11 @@ func AddCollaborator(ctx *context.APIContext) {
 	}
 
 	if err := repo_module.AddCollaborator(ctx, ctx.Repo.Repository, collaborator); err != nil {
+		if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.Error(http.StatusForbidden, "AddCollaborator", err)
+		} else {
 			ctx.Error(http.StatusInternalServerError, "AddCollaborator", err)
+		}
 		return
 	}
 
@@ -237,7 +237,7 @@ func DeleteCollaborator(ctx *context.APIContext) {
 		return
 	}
 
-	if err := repo_service.DeleteCollaboration(ctx, ctx.Repo.Repository, collaborator.ID); err != nil {
+	if err := repo_service.DeleteCollaboration(ctx, ctx.Repo.Repository, collaborator); err != nil {
 		ctx.Error(http.StatusInternalServerError, "DeleteCollaboration", err)
 		return
 	}

routers/api/v1/repo/fork.go

@@ -149,6 +149,8 @@ func CreateFork(ctx *context.APIContext) {
 	if err != nil {
 		if errors.Is(err, util.ErrAlreadyExist) || repo_model.IsErrReachLimitOfRepo(err) {
 			ctx.Error(http.StatusConflict, "ForkRepository", err)
+		} else if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.Error(http.StatusForbidden, "ForkRepository", err)
 		} else {
 			ctx.Error(http.StatusInternalServerError, "ForkRepository", err)
 		}

routers/api/v1/repo/issue.go

@@ -5,6 +5,7 @@
 package repo
 
 import (
+	"errors"
 	"fmt"
 	"net/http"
 	"strconv"
@@ -653,6 +654,7 @@ func CreateIssue(ctx *context.APIContext) {
 	//     "$ref": "#/responses/validationError"
 	//   "423":
 	//     "$ref": "#/responses/repoArchivedError"
+
 	form := web.GetForm(ctx).(*api.CreateIssueOption)
 	var deadlineUnix timeutil.TimeStamp
 	if form.Deadline != nil && ctx.Repo.CanWrite(unit.TypeIssues) {
@@ -710,9 +712,11 @@ func CreateIssue(ctx *context.APIContext) {
 	if err := issue_service.NewIssue(ctx, ctx.Repo.Repository, issue, form.Labels, nil, assigneeIDs); err != nil {
 		if repo_model.IsErrUserDoesNotHaveAccessToRepo(err) {
 			ctx.Error(http.StatusBadRequest, "UserDoesNotHaveAccessToRepo", err)
-			return
+		} else if errors.Is(err, user_model.ErrBlockedUser) {
-		}
+			ctx.Error(http.StatusForbidden, "NewIssue", err)
+		} else {
 			ctx.Error(http.StatusInternalServerError, "NewIssue", err)
+		}
 		return
 	}
 
@@ -848,7 +852,11 @@ func EditIssue(ctx *context.APIContext) {
 
 		err = issue_service.UpdateAssignees(ctx, issue, oneAssignee, form.Assignees, ctx.Doer)
 		if err != nil {
+			if errors.Is(err, user_model.ErrBlockedUser) {
+				ctx.Error(http.StatusForbidden, "UpdateAssignees", err)
+			} else {
 				ctx.Error(http.StatusInternalServerError, "UpdateAssignees", err)
+			}
 			return
 		}
 	}

routers/api/v1/repo/issue_comment.go

@@ -382,6 +382,7 @@ func CreateIssueComment(ctx *context.APIContext) {
 	//     "$ref": "#/responses/notFound"
 	//   "423":
 	//     "$ref": "#/responses/repoArchivedError"
+
 	form := web.GetForm(ctx).(*api.CreateIssueCommentOption)
 	issue, err := issues_model.GetIssueByIndex(ctx, ctx.Repo.Repository.ID, ctx.ParamsInt64(":index"))
 	if err != nil {
@@ -401,7 +402,11 @@ func CreateIssueComment(ctx *context.APIContext) {
 
 	comment, err := issue_service.CreateIssueComment(ctx, ctx.Doer, ctx.Repo.Repository, issue, form.Body, nil)
 	if err != nil {
+		if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.Error(http.StatusForbidden, "CreateIssueComment", err)
+		} else {
 			ctx.Error(http.StatusInternalServerError, "CreateIssueComment", err)
+		}
 		return
 	}
 
@@ -522,6 +527,7 @@ func EditIssueComment(ctx *context.APIContext) {
 	//     "$ref": "#/responses/notFound"
 	//   "423":
 	//     "$ref": "#/responses/repoArchivedError"
+
 	form := web.GetForm(ctx).(*api.EditIssueCommentOption)
 	editIssueComment(ctx, *form)
 }
@@ -610,7 +616,11 @@ func editIssueComment(ctx *context.APIContext, form api.EditIssueCommentOption)
 	oldContent := comment.Content
 	comment.Content = form.Body
 	if err := issue_service.UpdateComment(ctx, comment, ctx.Doer, oldContent); err != nil {
+		if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.Error(http.StatusForbidden, "UpdateComment", err)
+		} else {
 			ctx.Error(http.StatusInternalServerError, "UpdateComment", err)
+		}
 		return
 	}
 

routers/api/v1/repo/issue_comment_attachment.go

@@ -4,10 +4,12 @@
 package repo
 
 import (
+	"errors"
 	"net/http"
 
 	issues_model "code.gitea.io/gitea/models/issues"
 	repo_model "code.gitea.io/gitea/models/repo"
+	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
 	api "code.gitea.io/gitea/modules/structs"
@@ -154,6 +156,8 @@ func CreateIssueCommentAttachment(ctx *context.APIContext) {
 	//     "$ref": "#/responses/Attachment"
 	//   "400":
 	//     "$ref": "#/responses/error"
+	//   "403":
+	//     "$ref": "#/responses/forbidden"
 	//   "404":
 	//     "$ref": "#/responses/error"
 	//   "423":
@@ -199,7 +203,11 @@ func CreateIssueCommentAttachment(ctx *context.APIContext) {
 	}
 
 	if err = issue_service.UpdateComment(ctx, comment, ctx.Doer, comment.Content); err != nil {
+		if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.Error(http.StatusForbidden, "UpdateComment", err)
+		} else {
 			ctx.ServerError("UpdateComment", err)
+		}
 		return
 	}
 

routers/api/v1/repo/issue_reaction.go

@@ -8,11 +8,13 @@ import (
 	"net/http"
 
 	issues_model "code.gitea.io/gitea/models/issues"
+	user_model "code.gitea.io/gitea/models/user"
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/web"
 	"code.gitea.io/gitea/routers/api/v1/utils"
 	"code.gitea.io/gitea/services/context"
 	"code.gitea.io/gitea/services/convert"
+	issue_service "code.gitea.io/gitea/services/issue"
 )
 
 // GetIssueCommentReactions list reactions of a comment from an issue
@@ -218,9 +220,9 @@ func changeIssueCommentReaction(ctx *context.APIContext, form api.EditReactionOp
 
 	if isCreateType {
 		// PostIssueCommentReaction part
-		reaction, err := issues_model.CreateCommentReaction(ctx, ctx.Doer.ID, comment.Issue.ID, comment.ID, form.Reaction)
+		reaction, err := issue_service.CreateCommentReaction(ctx, ctx.Doer, comment, form.Reaction)
 		if err != nil {
-			if issues_model.IsErrForbiddenIssueReaction(err) {
+			if issues_model.IsErrForbiddenIssueReaction(err) || errors.Is(err, user_model.ErrBlockedUser) {
 				ctx.Error(http.StatusForbidden, err.Error(), err)
 			} else if issues_model.IsErrReactionAlreadyExist(err) {
 				ctx.JSON(http.StatusOK, api.Reaction{
@@ -434,9 +436,9 @@ func changeIssueReaction(ctx *context.APIContext, form api.EditReactionOption, i
 
 	if isCreateType {
 		// PostIssueReaction part
-		reaction, err := issues_model.CreateIssueReaction(ctx, ctx.Doer.ID, issue.ID, form.Reaction)
+		reaction, err := issue_service.CreateIssueReaction(ctx, ctx.Doer, issue, form.Reaction)
 		if err != nil {
-			if issues_model.IsErrForbiddenIssueReaction(err) {
+			if issues_model.IsErrForbiddenIssueReaction(err) || errors.Is(err, user_model.ErrBlockedUser) {
 				ctx.Error(http.StatusForbidden, err.Error(), err)
 			} else if issues_model.IsErrReactionAlreadyExist(err) {
 				ctx.JSON(http.StatusOK, api.Reaction{
@@ -445,7 +447,7 @@ func changeIssueReaction(ctx *context.APIContext, form api.EditReactionOption, i
 					Created:  reaction.CreatedUnix.AsTime(),
 				})
 			} else {
-				ctx.Error(http.StatusInternalServerError, "CreateCommentReaction", err)
+				ctx.Error(http.StatusInternalServerError, "CreateIssueReaction", err)
 			}
 			return
 		}

routers/api/v1/repo/pull.go

@@ -362,6 +362,8 @@ func CreatePullRequest(ctx *context.APIContext) {
 	// responses:
 	//   "201":
 	//     "$ref": "#/responses/PullRequest"
+	//   "403":
+	//     "$ref": "#/responses/forbidden"
 	//   "404":
 	//     "$ref": "#/responses/notFound"
 	//   "409":
@@ -510,9 +512,11 @@ func CreatePullRequest(ctx *context.APIContext) {
 	if err := pull_service.NewPullRequest(ctx, repo, prIssue, labelIDs, []string{}, pr, assigneeIDs); err != nil {
 		if repo_model.IsErrUserDoesNotHaveAccessToRepo(err) {
 			ctx.Error(http.StatusBadRequest, "UserDoesNotHaveAccessToRepo", err)
-			return
+		} else if errors.Is(err, user_model.ErrBlockedUser) {
-		}
+			ctx.Error(http.StatusForbidden, "BlockedUser", err)
+		} else {
 			ctx.Error(http.StatusInternalServerError, "NewPullRequest", err)
+		}
 		return
 	}
 
@@ -630,6 +634,8 @@ func EditPullRequest(ctx *context.APIContext) {
 		if err != nil {
 			if user_model.IsErrUserNotExist(err) {
 				ctx.Error(http.StatusUnprocessableEntity, "", fmt.Sprintf("Assignee does not exist: [name: %s]", err))
+			} else if errors.Is(err, user_model.ErrBlockedUser) {
+				ctx.Error(http.StatusForbidden, "UpdateAssignees", err)
 			} else {
 				ctx.Error(http.StatusInternalServerError, "UpdateAssignees", err)
 			}

routers/api/v1/repo/transfer.go

@@ -4,6 +4,7 @@
 package repo
 
 import (
+	"errors"
 	"fmt"
 	"net/http"
 
@@ -117,7 +118,11 @@ func Transfer(ctx *context.APIContext) {
 			return
 		}
 
+		if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.Error(http.StatusForbidden, "BlockedUser", err)
+		} else {
 			ctx.InternalServerError(err)
+		}
 		return
 	}
 

routers/api/v1/shared/block.go

@@ -0,0 +1,98 @@
+// Copyright 2024 The Gitea Authors.
+// SPDX-License-Identifier: MIT
+
+package shared
+
+import (
+	"errors"
+	"net/http"
+
+	user_model "code.gitea.io/gitea/models/user"
+	api "code.gitea.io/gitea/modules/structs"
+	"code.gitea.io/gitea/routers/api/v1/utils"
+	"code.gitea.io/gitea/services/context"
+	"code.gitea.io/gitea/services/convert"
+	user_service "code.gitea.io/gitea/services/user"
+)
+
+func ListBlocks(ctx *context.APIContext, blocker *user_model.User) {
+	blocks, total, err := user_model.FindBlockings(ctx, &user_model.FindBlockingOptions{
+		ListOptions: utils.GetListOptions(ctx),
+		BlockerID:   blocker.ID,
+	})
+	if err != nil {
+		ctx.Error(http.StatusInternalServerError, "FindBlockings", err)
+		return
+	}
+
+	if err := user_model.BlockingList(blocks).LoadAttributes(ctx); err != nil {
+		ctx.Error(http.StatusInternalServerError, "LoadAttributes", err)
+		return
+	}
+
+	users := make([]*api.User, 0, len(blocks))
+	for _, b := range blocks {
+		users = append(users, convert.ToUser(ctx, b.Blockee, blocker))
+	}
+
+	ctx.SetTotalCountHeader(total)
+	ctx.JSON(http.StatusOK, &users)
+}
+
+func CheckUserBlock(ctx *context.APIContext, blocker *user_model.User) {
+	blockee, err := user_model.GetUserByName(ctx, ctx.Params("username"))
+	if err != nil {
+		ctx.NotFound("GetUserByName", err)
+		return
+	}
+
+	status := http.StatusNotFound
+	blocking, err := user_model.GetBlocking(ctx, blocker.ID, blockee.ID)
+	if err != nil {
+		ctx.Error(http.StatusInternalServerError, "GetBlocking", err)
+		return
+	}
+	if blocking != nil {
+		status = http.StatusNoContent
+	}
+
+	ctx.Status(status)
+}
+
+func BlockUser(ctx *context.APIContext, blocker *user_model.User) {
+	blockee, err := user_model.GetUserByName(ctx, ctx.Params("username"))
+	if err != nil {
+		ctx.NotFound("GetUserByName", err)
+		return
+	}
+
+	if err := user_service.BlockUser(ctx, ctx.Doer, blocker, blockee, ctx.FormString("note")); err != nil {
+		if errors.Is(err, user_model.ErrCanNotBlock) || errors.Is(err, user_model.ErrBlockOrganization) {
+			ctx.Error(http.StatusBadRequest, "BlockUser", err)
+		} else {
+			ctx.Error(http.StatusInternalServerError, "BlockUser", err)
+		}
+		return
+	}
+
+	ctx.Status(http.StatusNoContent)
+}
+
+func UnblockUser(ctx *context.APIContext, doer, blocker *user_model.User) {
+	blockee, err := user_model.GetUserByName(ctx, ctx.Params("username"))
+	if err != nil {
+		ctx.NotFound("GetUserByName", err)
+		return
+	}
+
+	if err := user_service.UnblockUser(ctx, doer, blocker, blockee); err != nil {
+		if errors.Is(err, user_model.ErrCanNotUnblock) || errors.Is(err, user_model.ErrBlockOrganization) {
+			ctx.Error(http.StatusBadRequest, "UnblockUser", err)
+		} else {
+			ctx.Error(http.StatusInternalServerError, "UnblockUser", err)
+		}
+		return
+	}
+
+	ctx.Status(http.StatusNoContent)
+}

routers/api/v1/user/block.go

@@ -0,0 +1,96 @@
+// Copyright 2024 The Gitea Authors.
+// SPDX-License-Identifier: MIT
+
+package user
+
+import (
+	"code.gitea.io/gitea/routers/api/v1/shared"
+	"code.gitea.io/gitea/services/context"
+)
+
+func ListBlocks(ctx *context.APIContext) {
+	// swagger:operation GET /user/blocks user userListBlocks
+	// ---
+	// summary: List users blocked by the authenticated user
+	// parameters:
+	// - name: page
+	//   in: query
+	//   description: page number of results to return (1-based)
+	//   type: integer
+	// - name: limit
+	//   in: query
+	//   description: page size of results
+	//   type: integer
+	// produces:
+	// - application/json
+	// responses:
+	//   "200":
+	//     "$ref": "#/responses/UserList"
+
+	shared.ListBlocks(ctx, ctx.Doer)
+}
+
+func CheckUserBlock(ctx *context.APIContext) {
+	// swagger:operation GET /user/blocks/{username} user userCheckUserBlock
+	// ---
+	// summary: Check if a user is blocked by the authenticated user
+	// parameters:
+	// - name: username
+	//   in: path
+	//   description: user to check
+	//   type: string
+	//   required: true
+	// responses:
+	//   "204":
+	//     "$ref": "#/responses/empty"
+	//   "404":
+	//     "$ref": "#/responses/notFound"
+
+	shared.CheckUserBlock(ctx, ctx.Doer)
+}
+
+func BlockUser(ctx *context.APIContext) {
+	// swagger:operation PUT /user/blocks/{username} user userBlockUser
+	// ---
+	// summary: Block a user
+	// parameters:
+	// - name: username
+	//   in: path
+	//   description: user to block
+	//   type: string
+	//   required: true
+	// - name: note
+	//   in: query
+	//   description: optional note for the block
+	//   type: string
+	// responses:
+	//   "204":
+	//     "$ref": "#/responses/empty"
+	//   "404":
+	//     "$ref": "#/responses/notFound"
+	//   "422":
+	//     "$ref": "#/responses/validationError"
+
+	shared.BlockUser(ctx, ctx.Doer)
+}
+
+func UnblockUser(ctx *context.APIContext) {
+	// swagger:operation DELETE /user/blocks/{username} user userUnblockUser
+	// ---
+	// summary: Unblock a user
+	// parameters:
+	// - name: username
+	//   in: path
+	//   description: user to unblock
+	//   type: string
+	//   required: true
+	// responses:
+	//   "204":
+	//     "$ref": "#/responses/empty"
+	//   "404":
+	//     "$ref": "#/responses/notFound"
+	//   "422":
+	//     "$ref": "#/responses/validationError"
+
+	shared.UnblockUser(ctx, ctx.Doer, ctx.Doer)
+}

routers/api/v1/user/follower.go

@@ -5,6 +5,7 @@
 package user
 
 import (
+	"errors"
 	"net/http"
 
 	user_model "code.gitea.io/gitea/models/user"
@@ -221,11 +222,17 @@ func Follow(ctx *context.APIContext) {
 	// responses:
 	//   "204":
 	//     "$ref": "#/responses/empty"
+	//   "403":
+	//     "$ref": "#/responses/forbidden"
 	//   "404":
 	//     "$ref": "#/responses/notFound"
 
-	if err := user_model.FollowUser(ctx, ctx.Doer.ID, ctx.ContextUser.ID); err != nil {
+	if err := user_model.FollowUser(ctx, ctx.Doer, ctx.ContextUser); err != nil {
+		if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.Error(http.StatusForbidden, "FollowUser", err)
+		} else {
 			ctx.Error(http.StatusInternalServerError, "FollowUser", err)
+		}
 		return
 	}
 	ctx.Status(http.StatusNoContent)

routers/api/v1/user/star.go

@@ -5,10 +5,9 @@
 package user
 
 import (
-	std_context "context"
+	"errors"
 	"net/http"
 
-	"code.gitea.io/gitea/models/db"
 	access_model "code.gitea.io/gitea/models/perm/access"
 	repo_model "code.gitea.io/gitea/models/repo"
 	user_model "code.gitea.io/gitea/models/user"
@@ -20,8 +19,12 @@ import (
 
 // getStarredRepos returns the repos that the user with the specified userID has
 // starred
-func getStarredRepos(ctx std_context.Context, user *user_model.User, private bool, listOptions db.ListOptions) ([]*api.Repository, error) {
+func getStarredRepos(ctx *context.APIContext, user *user_model.User, private bool) ([]*api.Repository, error) {
-	starredRepos, err := repo_model.GetStarredRepos(ctx, user.ID, private, listOptions)
+	starredRepos, err := repo_model.GetStarredRepos(ctx, &repo_model.StarredReposOptions{
+		ListOptions:    utils.GetListOptions(ctx),
+		StarrerID:      user.ID,
+		IncludePrivate: private,
+	})
 	if err != nil {
 		return nil, err
 	}
@@ -65,7 +68,7 @@ func GetStarredRepos(ctx *context.APIContext) {
 	//     "$ref": "#/responses/notFound"
 
 	private := ctx.ContextUser.ID == ctx.Doer.ID
-	repos, err := getStarredRepos(ctx, ctx.ContextUser, private, utils.GetListOptions(ctx))
+	repos, err := getStarredRepos(ctx, ctx.ContextUser, private)
 	if err != nil {
 		ctx.Error(http.StatusInternalServerError, "getStarredRepos", err)
 		return
@@ -95,7 +98,7 @@ func GetMyStarredRepos(ctx *context.APIContext) {
 	//   "200":
 	//     "$ref": "#/responses/RepositoryList"
 
-	repos, err := getStarredRepos(ctx, ctx.Doer, true, utils.GetListOptions(ctx))
+	repos, err := getStarredRepos(ctx, ctx.Doer, true)
 	if err != nil {
 		ctx.Error(http.StatusInternalServerError, "getStarredRepos", err)
 	}
@@ -152,12 +155,18 @@ func Star(ctx *context.APIContext) {
 	// responses:
 	//   "204":
 	//     "$ref": "#/responses/empty"
+	//   "403":
+	//     "$ref": "#/responses/forbidden"
 	//   "404":
 	//     "$ref": "#/responses/notFound"
 
-	err := repo_model.StarRepo(ctx, ctx.Doer.ID, ctx.Repo.Repository.ID, true)
+	err := repo_model.StarRepo(ctx, ctx.Doer, ctx.Repo.Repository, true)
 	if err != nil {
+		if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.Error(http.StatusForbidden, "BlockedUser", err)
+		} else {
 			ctx.Error(http.StatusInternalServerError, "StarRepo", err)
+		}
 		return
 	}
 	ctx.Status(http.StatusNoContent)
@@ -185,7 +194,7 @@ func Unstar(ctx *context.APIContext) {
 	//   "404":
 	//     "$ref": "#/responses/notFound"
 
-	err := repo_model.StarRepo(ctx, ctx.Doer.ID, ctx.Repo.Repository.ID, false)
+	err := repo_model.StarRepo(ctx, ctx.Doer, ctx.Repo.Repository, false)
 	if err != nil {
 		ctx.Error(http.StatusInternalServerError, "StarRepo", err)
 		return

routers/api/v1/user/watch.go

@@ -4,10 +4,9 @@
 package user
 
 import (
-	std_context "context"
+	"errors"
 	"net/http"
 
-	"code.gitea.io/gitea/models/db"
 	access_model "code.gitea.io/gitea/models/perm/access"
 	repo_model "code.gitea.io/gitea/models/repo"
 	user_model "code.gitea.io/gitea/models/user"
@@ -18,8 +17,12 @@ import (
 )
 
 // getWatchedRepos returns the repos that the user with the specified userID is watching
-func getWatchedRepos(ctx std_context.Context, user *user_model.User, private bool, listOptions db.ListOptions) ([]*api.Repository, int64, error) {
+func getWatchedRepos(ctx *context.APIContext, user *user_model.User, private bool) ([]*api.Repository, int64, error) {
-	watchedRepos, total, err := repo_model.GetWatchedRepos(ctx, user.ID, private, listOptions)
+	watchedRepos, total, err := repo_model.GetWatchedRepos(ctx, &repo_model.WatchedReposOptions{
+		ListOptions:    utils.GetListOptions(ctx),
+		WatcherID:      user.ID,
+		IncludePrivate: private,
+	})
 	if err != nil {
 		return nil, 0, err
 	}
@@ -63,7 +66,7 @@ func GetWatchedRepos(ctx *context.APIContext) {
 	//     "$ref": "#/responses/notFound"
 
 	private := ctx.ContextUser.ID == ctx.Doer.ID
-	repos, total, err := getWatchedRepos(ctx, ctx.ContextUser, private, utils.GetListOptions(ctx))
+	repos, total, err := getWatchedRepos(ctx, ctx.ContextUser, private)
 	if err != nil {
 		ctx.Error(http.StatusInternalServerError, "getWatchedRepos", err)
 	}
@@ -92,7 +95,7 @@ func GetMyWatchedRepos(ctx *context.APIContext) {
 	//   "200":
 	//     "$ref": "#/responses/RepositoryList"
 
-	repos, total, err := getWatchedRepos(ctx, ctx.Doer, true, utils.GetListOptions(ctx))
+	repos, total, err := getWatchedRepos(ctx, ctx.Doer, true)
 	if err != nil {
 		ctx.Error(http.StatusInternalServerError, "getWatchedRepos", err)
 	}
@@ -157,12 +160,18 @@ func Watch(ctx *context.APIContext) {
 	// responses:
 	//   "200":
 	//     "$ref": "#/responses/WatchInfo"
+	//   "403":
+	//     "$ref": "#/responses/forbidden"
 	//   "404":
 	//     "$ref": "#/responses/notFound"
 
-	err := repo_model.WatchRepo(ctx, ctx.Doer.ID, ctx.Repo.Repository.ID, true)
+	err := repo_model.WatchRepo(ctx, ctx.Doer, ctx.Repo.Repository, true)
 	if err != nil {
+		if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.Error(http.StatusForbidden, "BlockedUser", err)
+		} else {
 			ctx.Error(http.StatusInternalServerError, "WatchRepo", err)
+		}
 		return
 	}
 	ctx.JSON(http.StatusOK, api.WatchInfo{
@@ -197,7 +206,7 @@ func Unwatch(ctx *context.APIContext) {
 	//   "404":
 	//     "$ref": "#/responses/notFound"
 
-	err := repo_model.WatchRepo(ctx, ctx.Doer.ID, ctx.Repo.Repository.ID, false)
+	err := repo_model.WatchRepo(ctx, ctx.Doer, ctx.Repo.Repository, false)
 	if err != nil {
 		ctx.Error(http.StatusInternalServerError, "UnwatchRepo", err)
 		return

routers/web/org/block.go

@@ -0,0 +1,38 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package org
+
+import (
+	"net/http"
+
+	"code.gitea.io/gitea/modules/base"
+	shared_user "code.gitea.io/gitea/routers/web/shared/user"
+	"code.gitea.io/gitea/services/context"
+)
+
+const (
+	tplSettingsBlockedUsers base.TplName = "org/settings/blocked_users"
+)
+
+func BlockedUsers(ctx *context.Context) {
+	ctx.Data["Title"] = ctx.Tr("user.block.list")
+	ctx.Data["PageIsOrgSettings"] = true
+	ctx.Data["PageIsSettingsBlockedUsers"] = true
+
+	shared_user.BlockedUsers(ctx, ctx.ContextUser)
+	if ctx.Written() {
+		return
+	}
+
+	ctx.HTML(http.StatusOK, tplSettingsBlockedUsers)
+}
+
+func BlockedUsersPost(ctx *context.Context) {
+	shared_user.BlockedUsersPost(ctx, ctx.ContextUser)
+	if ctx.Written() {
+		return
+	}
+
+	ctx.Redirect(ctx.ContextUser.OrganisationLink() + "/settings/blocked_users")
+}

routers/web/org/members.go

@@ -9,6 +9,7 @@ import (
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/models/organization"
+	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/base"
 	"code.gitea.io/gitea/modules/log"
 	"code.gitea.io/gitea/modules/setting"
@@ -78,40 +79,43 @@ func Members(ctx *context.Context) {
 
 // MembersAction response for operation to a member of organization
 func MembersAction(ctx *context.Context) {
-	uid := ctx.FormInt64("uid")
+	member, err := user_model.GetUserByID(ctx, ctx.FormInt64("uid"))
-	if uid == 0 {
+	if err != nil {
+		log.Error("GetUserByID: %v", err)
+	}
+	if member == nil {
 		ctx.Redirect(ctx.Org.OrgLink + "/members")
 		return
 	}
 
 	org := ctx.Org.Organization
-	var err error
+
 	switch ctx.Params(":action") {
 	case "private":
-		if ctx.Doer.ID != uid && !ctx.Org.IsOwner {
+		if ctx.Doer.ID != member.ID && !ctx.Org.IsOwner {
 			ctx.Error(http.StatusNotFound)
 			return
 		}
-		err = organization.ChangeOrgUserStatus(ctx, org.ID, uid, false)
+		err = organization.ChangeOrgUserStatus(ctx, org.ID, member.ID, false)
 	case "public":
-		if ctx.Doer.ID != uid && !ctx.Org.IsOwner {
+		if ctx.Doer.ID != member.ID && !ctx.Org.IsOwner {
 			ctx.Error(http.StatusNotFound)
 			return
 		}
-		err = organization.ChangeOrgUserStatus(ctx, org.ID, uid, true)
+		err = organization.ChangeOrgUserStatus(ctx, org.ID, member.ID, true)
 	case "remove":
 		if !ctx.Org.IsOwner {
 			ctx.Error(http.StatusNotFound)
 			return
 		}
-		err = models.RemoveOrgUser(ctx, org.ID, uid)
+		err = models.RemoveOrgUser(ctx, org, member)
 		if organization.IsErrLastOrgOwner(err) {
 			ctx.Flash.Error(ctx.Tr("form.last_org_owner"))
 			ctx.JSONRedirect(ctx.Org.OrgLink + "/members")
 			return
 		}
 	case "leave":
-		err = models.RemoveOrgUser(ctx, org.ID, ctx.Doer.ID)
+		err = models.RemoveOrgUser(ctx, org, ctx.Doer)
 		if err == nil {
 			ctx.Flash.Success(ctx.Tr("form.organization_leave_success", org.DisplayName()))
 			ctx.JSON(http.StatusOK, map[string]any{

routers/web/org/teams.go

@@ -5,6 +5,7 @@
 package org
 
 import (
+	"errors"
 	"fmt"
 	"net/http"
 	"net/url"
@@ -77,9 +78,9 @@ func TeamsAction(ctx *context.Context) {
 			ctx.Error(http.StatusNotFound)
 			return
 		}
-		err = models.AddTeamMember(ctx, ctx.Org.Team, ctx.Doer.ID)
+		err = models.AddTeamMember(ctx, ctx.Org.Team, ctx.Doer)
 	case "leave":
-		err = models.RemoveTeamMember(ctx, ctx.Org.Team, ctx.Doer.ID)
+		err = models.RemoveTeamMember(ctx, ctx.Org.Team, ctx.Doer)
 		if err != nil {
 			if org_model.IsErrLastOrgOwner(err) {
 				ctx.Flash.Error(ctx.Tr("form.last_org_owner"))
@@ -100,13 +101,13 @@ func TeamsAction(ctx *context.Context) {
 			return
 		}
 
-		uid := ctx.FormInt64("uid")
+		user, _ := user_model.GetUserByID(ctx, ctx.FormInt64("uid"))
-		if uid == 0 {
+		if user == nil {
 			ctx.Redirect(ctx.Org.OrgLink + "/teams")
 			return
 		}
 
-		err = models.RemoveTeamMember(ctx, ctx.Org.Team, uid)
+		err = models.RemoveTeamMember(ctx, ctx.Org.Team, user)
 		if err != nil {
 			if org_model.IsErrLastOrgOwner(err) {
 				ctx.Flash.Error(ctx.Tr("form.last_org_owner"))
@@ -161,7 +162,7 @@ func TeamsAction(ctx *context.Context) {
 		if ctx.Org.Team.IsMember(ctx, u.ID) {
 			ctx.Flash.Error(ctx.Tr("org.teams.add_duplicate_users"))
 		} else {
-			err = models.AddTeamMember(ctx, ctx.Org.Team, u.ID)
+			err = models.AddTeamMember(ctx, ctx.Org.Team, u)
 		}
 
 		page = "team"
@@ -189,6 +190,8 @@ func TeamsAction(ctx *context.Context) {
 	if err != nil {
 		if org_model.IsErrLastOrgOwner(err) {
 			ctx.Flash.Error(ctx.Tr("form.last_org_owner"))
+		} else if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.Flash.Error(ctx.Tr("org.teams.members.blocked_user"))
 		} else {
 			log.Error("Action(%s): %v", ctx.Params(":action"), err)
 			ctx.JSON(http.StatusOK, map[string]any{
@@ -590,7 +593,7 @@ func TeamInvitePost(ctx *context.Context) {
 		return
 	}
 
-	if err := models.AddTeamMember(ctx, team, ctx.Doer.ID); err != nil {
+	if err := models.AddTeamMember(ctx, team, ctx.Doer); err != nil {
 		ctx.ServerError("AddTeamMember", err)
 		return
 	}

routers/web/repo/issue.go

@@ -57,6 +57,7 @@ import (
 	issue_service "code.gitea.io/gitea/services/issue"
 	pull_service "code.gitea.io/gitea/services/pull"
 	repo_service "code.gitea.io/gitea/services/repository"
+	user_service "code.gitea.io/gitea/services/user"
 )
 
 const (
@@ -1258,9 +1259,11 @@ func NewIssuePost(ctx *context.Context) {
 	if err := issue_service.NewIssue(ctx, repo, issue, labelIDs, attachments, assigneeIDs); err != nil {
 		if repo_model.IsErrUserDoesNotHaveAccessToRepo(err) {
 			ctx.Error(http.StatusBadRequest, "UserDoesNotHaveAccessToRepo", err.Error())
-			return
+		} else if errors.Is(err, user_model.ErrBlockedUser) {
-		}
+			ctx.JSONError(ctx.Tr("repo.issues.new.blocked_user"))
+		} else {
 			ctx.ServerError("NewIssue", err)
+		}
 		return
 	}
 
@@ -2047,6 +2050,10 @@ func ViewIssue(ctx *context.Context) {
 	}
 	ctx.Data["Tags"] = tags
 
+	ctx.Data["CanBlockUser"] = func(blocker, blockee *user_model.User) bool {
+		return user_service.CanBlockUser(ctx, ctx.Doer, blocker, blockee)
+	}
+
 	ctx.HTML(http.StatusOK, tplIssueView)
 }
 
@@ -2250,7 +2257,11 @@ func UpdateIssueContent(ctx *context.Context) {
 	}
 
 	if err := issue_service.ChangeContent(ctx, issue, ctx.Doer, ctx.Req.FormValue("content")); err != nil {
+		if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.JSONError(ctx.Tr("repo.issues.edit.blocked_user"))
+		} else {
 			ctx.ServerError("ChangeContent", err)
+		}
 		return
 	}
 
@@ -3108,7 +3119,11 @@ func NewComment(ctx *context.Context) {
 
 	comment, err := issue_service.CreateIssueComment(ctx, ctx.Doer, ctx.Repo.Repository, issue, form.Content, attachments)
 	if err != nil {
+		if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.JSONError(ctx.Tr("repo.issues.comment.blocked_user"))
+		} else {
 			ctx.ServerError("CreateIssueComment", err)
+		}
 		return
 	}
 
@@ -3152,7 +3167,11 @@ func UpdateCommentContent(ctx *context.Context) {
 		return
 	}
 	if err = issue_service.UpdateComment(ctx, comment, ctx.Doer, oldContent); err != nil {
+		if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.JSONError(ctx.Tr("repo.issues.comment.blocked_user"))
+		} else {
 			ctx.ServerError("UpdateComment", err)
+		}
 		return
 	}
 
@@ -3260,9 +3279,9 @@ func ChangeIssueReaction(ctx *context.Context) {
 
 	switch ctx.Params(":action") {
 	case "react":
-		reaction, err := issues_model.CreateIssueReaction(ctx, ctx.Doer.ID, issue.ID, form.Content)
+		reaction, err := issue_service.CreateIssueReaction(ctx, ctx.Doer, issue, form.Content)
 		if err != nil {
-			if issues_model.IsErrForbiddenIssueReaction(err) {
+			if issues_model.IsErrForbiddenIssueReaction(err) || errors.Is(err, user_model.ErrBlockedUser) {
 				ctx.ServerError("ChangeIssueReaction", err)
 				return
 			}
@@ -3367,9 +3386,9 @@ func ChangeCommentReaction(ctx *context.Context) {
 
 	switch ctx.Params(":action") {
 	case "react":
-		reaction, err := issues_model.CreateCommentReaction(ctx, ctx.Doer.ID, comment.Issue.ID, comment.ID, form.Content)
+		reaction, err := issue_service.CreateCommentReaction(ctx, ctx.Doer, comment, form.Content)
 		if err != nil {
-			if issues_model.IsErrForbiddenIssueReaction(err) {
+			if issues_model.IsErrForbiddenIssueReaction(err) || errors.Is(err, user_model.ErrBlockedUser) {
 				ctx.ServerError("ChangeIssueReaction", err)
 				return
 			}

routers/web/repo/pull.go

@@ -47,6 +47,7 @@ import (
 	notify_service "code.gitea.io/gitea/services/notify"
 	pull_service "code.gitea.io/gitea/services/pull"
 	repo_service "code.gitea.io/gitea/services/repository"
+	user_service "code.gitea.io/gitea/services/user"
 
 	"github.com/gobwas/glob"
 )
@@ -308,6 +309,8 @@ func ForkPost(ctx *context.Context) {
 			ctx.RenderWithErr(ctx.Tr("repo.form.name_reserved", err.(db.ErrNameReserved).Name), tplFork, &form)
 		case db.IsErrNamePatternNotAllowed(err):
 			ctx.RenderWithErr(ctx.Tr("repo.form.name_pattern_not_allowed", err.(db.ErrNamePatternNotAllowed).Pattern), tplFork, &form)
+		case errors.Is(err, user_model.ErrBlockedUser):
+			ctx.RenderWithErr(ctx.Tr("repo.fork.blocked_user"), tplFork, form)
 		default:
 			ctx.ServerError("ForkPost", err)
 		}
@@ -1065,6 +1068,10 @@ func viewPullFiles(ctx *context.Context, specifiedStartCommit, specifiedEndCommi
 	}
 	upload.AddUploadContext(ctx, "comment")
 
+	ctx.Data["CanBlockUser"] = func(blocker, blockee *user_model.User) bool {
+		return user_service.CanBlockUser(ctx, ctx.Doer, blocker, blockee)
+	}
+
 	ctx.HTML(http.StatusOK, tplPullFiles)
 }
 
@@ -1483,7 +1490,6 @@ func CompareAndPullRequestPost(ctx *context.Context) {
 	if err := pull_service.NewPullRequest(ctx, repo, pullIssue, labelIDs, attachments, pullRequest, assigneeIDs); err != nil {
 		if repo_model.IsErrUserDoesNotHaveAccessToRepo(err) {
 			ctx.Error(http.StatusBadRequest, "UserDoesNotHaveAccessToRepo", err.Error())
-			return
 		} else if git.IsErrPushRejected(err) {
 			pushrejErr := err.(*git.ErrPushRejected)
 			message := pushrejErr.Message
@@ -1501,9 +1507,17 @@ func CompareAndPullRequestPost(ctx *context.Context) {
 				return
 			}
 			ctx.JSONError(flashError)
+		} else if errors.Is(err, user_model.ErrBlockedUser) {
+			flashError, err := ctx.RenderToHTML(tplAlertDetails, map[string]any{
+				"Message": ctx.Tr("repo.pulls.push_rejected"),
+				"Summary": ctx.Tr("repo.pulls.new.blocked_user"),
+			})
+			if err != nil {
+				ctx.ServerError("CompareAndPullRequest.HTMLString", err)
 				return
 			}
-		ctx.ServerError("NewPullRequest", err)
+			ctx.JSONError(flashError)
+		}
 		return
 	}
 

routers/web/repo/repo.go

@@ -313,13 +313,13 @@ func Action(ctx *context.Context) {
 	var err error
 	switch ctx.Params(":action") {
 	case "watch":
-		err = repo_model.WatchRepo(ctx, ctx.Doer.ID, ctx.Repo.Repository.ID, true)
+		err = repo_model.WatchRepo(ctx, ctx.Doer, ctx.Repo.Repository, true)
 	case "unwatch":
-		err = repo_model.WatchRepo(ctx, ctx.Doer.ID, ctx.Repo.Repository.ID, false)
+		err = repo_model.WatchRepo(ctx, ctx.Doer, ctx.Repo.Repository, false)
 	case "star":
-		err = repo_model.StarRepo(ctx, ctx.Doer.ID, ctx.Repo.Repository.ID, true)
+		err = repo_model.StarRepo(ctx, ctx.Doer, ctx.Repo.Repository, true)
 	case "unstar":
-		err = repo_model.StarRepo(ctx, ctx.Doer.ID, ctx.Repo.Repository.ID, false)
+		err = repo_model.StarRepo(ctx, ctx.Doer, ctx.Repo.Repository, false)
 	case "accept_transfer":
 		err = acceptOrRejectRepoTransfer(ctx, true)
 	case "reject_transfer":
@@ -336,9 +336,13 @@ func Action(ctx *context.Context) {
 	}
 
 	if err != nil {
+		if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.Flash.Error(ctx.Tr("repo.action.blocked_user"))
+		} else {
 			ctx.ServerError(fmt.Sprintf("Action (%s)", ctx.Params(":action")), err)
 			return
 		}
+	}
 
 	switch ctx.Params(":action") {
 	case "watch", "unwatch":

routers/web/repo/setting/collaboration.go

@@ -4,10 +4,10 @@
 package setting
 
 import (
+	"errors"
 	"net/http"
 	"strings"
 
-	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/organization"
 	"code.gitea.io/gitea/models/perm"
 	repo_model "code.gitea.io/gitea/models/repo"
@@ -27,7 +27,7 @@ func Collaboration(ctx *context.Context) {
 	ctx.Data["Title"] = ctx.Tr("repo.settings.collaboration")
 	ctx.Data["PageIsSettingsCollaboration"] = true
 
-	users, err := repo_model.GetCollaborators(ctx, ctx.Repo.Repository.ID, db.ListOptions{})
+	users, _, err := repo_model.GetCollaborators(ctx, &repo_model.FindCollaborationOptions{RepoID: ctx.Repo.Repository.ID})
 	if err != nil {
 		ctx.ServerError("GetCollaborators", err)
 		return
@@ -101,7 +101,12 @@ func CollaborationPost(ctx *context.Context) {
 	}
 
 	if err = repo_module.AddCollaborator(ctx, ctx.Repo.Repository, u); err != nil {
+		if errors.Is(err, user_model.ErrBlockedUser) {
+			ctx.Flash.Error(ctx.Tr("repo.settings.add_collaborator.blocked_user"))
+			ctx.Redirect(ctx.Repo.RepoLink + "/settings/collaboration")
+		} else {
 			ctx.ServerError("AddCollaborator", err)
+		}
 		return
 	}
 
@@ -126,11 +131,20 @@ func ChangeCollaborationAccessMode(ctx *context.Context) {
 
 // DeleteCollaboration delete a collaboration for a repository
 func DeleteCollaboration(ctx *context.Context) {
-	if err := repo_service.DeleteCollaboration(ctx, ctx.Repo.Repository, ctx.FormInt64("id")); err != nil {
+	if collaborator, err := user_model.GetUserByID(ctx, ctx.FormInt64("id")); err != nil {
+		if user_model.IsErrUserNotExist(err) {
+			ctx.Flash.Error(ctx.Tr("form.user_not_exist"))
+		} else {
+			ctx.ServerError("GetUserByName", err)
+			return
+		}
+	} else {
+		if err := repo_service.DeleteCollaboration(ctx, ctx.Repo.Repository, collaborator); err != nil {
 			ctx.Flash.Error("DeleteCollaboration: " + err.Error())
 		} else {
 			ctx.Flash.Success(ctx.Tr("repo.settings.remove_collaborator_success"))
 		}
+	}
 
 	ctx.JSONRedirect(ctx.Repo.RepoLink + "/settings/collaboration")
 }

routers/web/repo/setting/setting.go

@@ -5,6 +5,7 @@
 package setting
 
 import (
+	"errors"
 	"fmt"
 	"net/http"
 	"strconv"
@@ -782,6 +783,8 @@ func SettingsPost(ctx *context.Context) {
 				ctx.RenderWithErr(ctx.Tr("repo.settings.new_owner_has_same_repo"), tplSettingsOptions, nil)
 			} else if models.IsErrRepoTransferInProgress(err) {
 				ctx.RenderWithErr(ctx.Tr("repo.settings.transfer_in_progress"), tplSettingsOptions, nil)
+			} else if errors.Is(err, user_model.ErrBlockedUser) {
+				ctx.RenderWithErr(ctx.Tr("repo.settings.transfer.blocked_user"), tplSettingsOptions, nil)
 			} else {
 				ctx.ServerError("TransferOwnership", err)
 			}

routers/web/shared/user/block.go

@@ -0,0 +1,76 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package user
+
+import (
+	"errors"
+
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/web"
+	"code.gitea.io/gitea/services/context"
+	"code.gitea.io/gitea/services/forms"
+	user_service "code.gitea.io/gitea/services/user"
+)
+
+func BlockedUsers(ctx *context.Context, blocker *user_model.User) {
+	blocks, _, err := user_model.FindBlockings(ctx, &user_model.FindBlockingOptions{
+		BlockerID: blocker.ID,
+	})
+	if err != nil {
+		ctx.ServerError("FindBlockings", err)
+		return
+	}
+	if err := user_model.BlockingList(blocks).LoadAttributes(ctx); err != nil {
+		ctx.ServerError("LoadAttributes", err)
+		return
+	}
+	ctx.Data["UserBlocks"] = blocks
+}
+
+func BlockedUsersPost(ctx *context.Context, blocker *user_model.User) {
+	form := web.GetForm(ctx).(*forms.BlockUserForm)
+	if ctx.HasError() {
+		ctx.ServerError("FormValidation", nil)
+		return
+	}
+
+	blockee, err := user_model.GetUserByName(ctx, form.Blockee)
+	if err != nil {
+		ctx.ServerError("GetUserByName", nil)
+		return
+	}
+
+	switch form.Action {
+	case "block":
+		if err := user_service.BlockUser(ctx, ctx.Doer, blocker, blockee, form.Note); err != nil {
+			if errors.Is(err, user_model.ErrCanNotBlock) || errors.Is(err, user_model.ErrBlockOrganization) {
+				ctx.Flash.Error(ctx.Tr("user.block.block.failure", err.Error()))
+			} else {
+				ctx.ServerError("BlockUser", err)
+				return
+			}
+		}
+	case "unblock":
+		if err := user_service.UnblockUser(ctx, ctx.Doer, blocker, blockee); err != nil {
+			if errors.Is(err, user_model.ErrCanNotUnblock) || errors.Is(err, user_model.ErrBlockOrganization) {
+				ctx.Flash.Error(ctx.Tr("user.block.unblock.failure", err.Error()))
+			} else {
+				ctx.ServerError("UnblockUser", err)
+				return
+			}
+		}
+	case "note":
+		block, err := user_model.GetBlocking(ctx, blocker.ID, blockee.ID)
+		if err != nil {
+			ctx.ServerError("GetBlocking", err)
+			return
+		}
+		if block != nil {
+			if err := user_model.UpdateBlockingNote(ctx, block.ID, form.Note); err != nil {
+				ctx.ServerError("UpdateBlockingNote", err)
+				return
+			}
+		}
+	}
+}

routers/web/shared/user/header.go

@@ -72,6 +72,14 @@ func PrepareContextForProfileBigAvatar(ctx *context.Context) {
 	if _, ok := ctx.Data["NumFollowing"]; !ok {
 		_, ctx.Data["NumFollowing"], _ = user_model.GetUserFollowing(ctx, ctx.ContextUser, ctx.Doer, db.ListOptions{PageSize: 1, Page: 1})
 	}
+
+	if ctx.Doer != nil {
+		if block, err := user_model.GetBlocking(ctx, ctx.Doer.ID, ctx.ContextUser.ID); err != nil {
+			ctx.ServerError("GetBlocking", err)
+		} else {
+			ctx.Data["UserBlocking"] = block
+		}
+	}
 }
 
 func FindUserProfileReadme(ctx *context.Context, doer *user_model.User) (profileDbRepo *repo_model.Repository, profileGitRepo *git.Repository, profileReadmeBlob *git.Blob, profileClose func()) {

routers/web/user/profile.go

@@ -339,7 +339,7 @@ func Action(ctx *context.Context) {
 	var err error
 	switch ctx.FormString("action") {
 	case "follow":
-		err = user_model.FollowUser(ctx, ctx.Doer.ID, ctx.ContextUser.ID)
+		err = user_model.FollowUser(ctx, ctx.Doer, ctx.ContextUser)
 	case "unfollow":
 		err = user_model.UnfollowUser(ctx, ctx.Doer.ID, ctx.ContextUser.ID)
 	}

routers/web/user/setting/block.go

@@ -0,0 +1,38 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package setting
+
+import (
+	"net/http"
+
+	"code.gitea.io/gitea/modules/base"
+	"code.gitea.io/gitea/modules/setting"
+	shared_user "code.gitea.io/gitea/routers/web/shared/user"
+	"code.gitea.io/gitea/services/context"
+)
+
+const (
+	tplSettingsBlockedUsers base.TplName = "user/settings/blocked_users"
+)
+
+func BlockedUsers(ctx *context.Context) {
+	ctx.Data["Title"] = ctx.Tr("user.block.list")
+	ctx.Data["PageIsSettingsBlockedUsers"] = true
+
+	shared_user.BlockedUsers(ctx, ctx.Doer)
+	if ctx.Written() {
+		return
+	}
+
+	ctx.HTML(http.StatusOK, tplSettingsBlockedUsers)
+}
+
+func BlockedUsersPost(ctx *context.Context) {
+	shared_user.BlockedUsersPost(ctx, ctx.Doer)
+	if ctx.Written() {
+		return
+	}
+
+	ctx.Redirect(setting.AppSubURL + "/user/settings/blocked_users")
+}

routers/web/web.go

@@ -647,6 +647,11 @@ func registerRoutes(m *web.Route) {
 			})
 			addWebhookEditRoutes()
 		}, webhooksEnabled)
+
+		m.Group("/blocked_users", func() {
+			m.Get("", user_setting.BlockedUsers)
+			m.Post("", web.Bind(forms.BlockUserForm{}), user_setting.BlockedUsersPost)
+		})
 	}, reqSignIn, ctxDataSet("PageIsUserSettings", true, "AllThemes", setting.UI.Themes, "EnablePackages", setting.Packages.Enabled))
 
 	m.Group("/user", func() {
@@ -945,6 +950,11 @@ func registerRoutes(m *web.Route) {
 						m.Post("/rebuild", org.RebuildCargoIndex)
 					})
 				}, packagesEnabled)
+
+				m.Group("/blocked_users", func() {
+					m.Get("", org.BlockedUsers)
+					m.Post("", web.Bind(forms.BlockUserForm{}), org.BlockedUsersPost)
+				})
 			}, ctxDataSet("EnableOAuth2", setting.OAuth2.Enabled, "EnablePackages", setting.Packages.Enabled, "PageIsOrgSettings", true))
 		}, context.OrgAssignment(true, true))
 	}, reqSignIn)

services/auth/source/source_group_sync.go

@@ -100,12 +100,12 @@ func syncGroupsToTeamsCached(ctx context.Context, user *user_model.User, orgTeam
 			}
 
 			if action == syncAdd && !isMember {
-				if err := models.AddTeamMember(ctx, team, user.ID); err != nil {
+				if err := models.AddTeamMember(ctx, team, user); err != nil {
 					log.Error("group sync: Could not add user to team: %v", err)
 					return err
 				}
 			} else if action == syncRemove && isMember {
-				if err := models.RemoveTeamMember(ctx, team, user.ID); err != nil {
+				if err := models.RemoveTeamMember(ctx, team, user); err != nil {
 					log.Error("group sync: Could not remove user from team: %v", err)
 					return err
 				}

services/forms/user_form.go

@@ -449,3 +449,14 @@ func (f *PackageSettingForm) Validate(req *http.Request, errs binding.Errors) bi
 	ctx := context.GetValidateContext(req)
 	return middleware.Validate(errs, ctx.Data, f, ctx.Locale)
 }
+
+type BlockUserForm struct {
+	Action  string `binding:"Required;In(block,unblock,note)"`
+	Blockee string `binding:"Required"`
+	Note    string
+}
+
+func (f *BlockUserForm) Validate(req *http.Request, errs binding.Errors) binding.Errors {
+	ctx := context.GetValidateContext(req)
+	return middleware.Validate(errs, ctx.Data, f, ctx.Locale)
+}

services/issue/comments.go

@@ -9,6 +9,7 @@ import (
 
 	"code.gitea.io/gitea/models/db"
 	issues_model "code.gitea.io/gitea/models/issues"
+	access_model "code.gitea.io/gitea/models/perm/access"
 	repo_model "code.gitea.io/gitea/models/repo"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/timeutil"
@@ -21,6 +22,12 @@ func CreateRefComment(ctx context.Context, doer *user_model.User, repo *repo_mod
 		return fmt.Errorf("cannot create reference with empty commit SHA")
 	}
 
+	if user_model.IsUserBlockedBy(ctx, doer, issue.PosterID, repo.OwnerID) {
+		if isAdmin, _ := access_model.IsUserRepoAdmin(ctx, repo, doer); !isAdmin {
+			return user_model.ErrBlockedUser
+		}
+	}
+
 	// Check if same reference from same commit has already existed.
 	has, err := db.GetEngine(ctx).Get(&issues_model.Comment{
 		Type:      issues_model.CommentTypeCommitRef,
@@ -46,6 +53,12 @@ func CreateRefComment(ctx context.Context, doer *user_model.User, repo *repo_mod
 
 // CreateIssueComment creates a plain issue comment.
 func CreateIssueComment(ctx context.Context, doer *user_model.User, repo *repo_model.Repository, issue *issues_model.Issue, content string, attachments []string) (*issues_model.Comment, error) {
+	if user_model.IsUserBlockedBy(ctx, doer, issue.PosterID, repo.OwnerID) {
+		if isAdmin, _ := access_model.IsUserRepoAdmin(ctx, repo, doer); !isAdmin {
+			return nil, user_model.ErrBlockedUser
+		}
+	}
+
 	comment, err := issues_model.CreateComment(ctx, &issues_model.CreateCommentOptions{
 		Type:        issues_model.CommentTypeComment,
 		Doer:        doer,
@@ -70,6 +83,19 @@ func CreateIssueComment(ctx context.Context, doer *user_model.User, repo *repo_m
 
 // UpdateComment updates information of comment.
 func UpdateComment(ctx context.Context, c *issues_model.Comment, doer *user_model.User, oldContent string) error {
+	if err := c.LoadIssue(ctx); err != nil {
+		return err
+	}
+	if err := c.Issue.LoadRepo(ctx); err != nil {
+		return err
+	}
+
+	if user_model.IsUserBlockedBy(ctx, doer, c.Issue.PosterID, c.Issue.Repo.OwnerID) {
+		if isAdmin, _ := access_model.IsUserRepoAdmin(ctx, c.Issue.Repo, doer); !isAdmin {
+			return user_model.ErrBlockedUser
+		}
+	}
+
 	needsContentHistory := c.Content != oldContent && c.Type.HasContentSupport()
 	if needsContentHistory {
 		hasContentHistory, err := issues_model.HasIssueContentHistory(ctx, c.IssueID, c.ID)

services/issue/commit.go

@@ -5,6 +5,7 @@ package issue
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"html"
 	"net/url"
@@ -160,6 +161,9 @@ func UpdateIssuesCommit(ctx context.Context, doer *user_model.User, repo *repo_m
 
 			message := fmt.Sprintf(`<a href="%s/commit/%s">%s</a>`, html.EscapeString(repo.Link()), html.EscapeString(url.PathEscape(c.Sha1)), html.EscapeString(strings.SplitN(c.Message, "\n", 2)[0]))
 			if err = CreateRefComment(ctx, doer, refRepo, refIssue, message, c.Sha1); err != nil {
+				if errors.Is(err, user_model.ErrBlockedUser) {
+					continue
+				}
 				return err
 			}
 

services/issue/content.go

@@ -7,12 +7,23 @@ import (
 	"context"
 
 	issues_model "code.gitea.io/gitea/models/issues"
+	access_model "code.gitea.io/gitea/models/perm/access"
 	user_model "code.gitea.io/gitea/models/user"
 	notify_service "code.gitea.io/gitea/services/notify"
 )
 
 // ChangeContent changes issue content, as the given user.
-func ChangeContent(ctx context.Context, issue *issues_model.Issue, doer *user_model.User, content string) (err error) {
+func ChangeContent(ctx context.Context, issue *issues_model.Issue, doer *user_model.User, content string) error {
+	if err := issue.LoadRepo(ctx); err != nil {
+		return err
+	}
+
+	if user_model.IsUserBlockedBy(ctx, doer, issue.PosterID, issue.Repo.OwnerID) {
+		if isAdmin, _ := access_model.IsUserRepoAdmin(ctx, issue.Repo, doer); !isAdmin {
+			return user_model.ErrBlockedUser
+		}
+	}
+
 	oldContent := issue.Content
 
 	if err := issues_model.ChangeIssueContent(ctx, issue, doer, content); err != nil {

services/issue/issue.go

@@ -15,6 +15,7 @@ import (
 	repo_model "code.gitea.io/gitea/models/repo"
 	system_model "code.gitea.io/gitea/models/system"
 	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/container"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/storage"
 	notify_service "code.gitea.io/gitea/services/notify"
@@ -22,6 +23,14 @@ import (
 
 // NewIssue creates new issue with labels for repository.
 func NewIssue(ctx context.Context, repo *repo_model.Repository, issue *issues_model.Issue, labelIDs []int64, uuids []string, assigneeIDs []int64) error {
+	if err := issue.LoadPoster(ctx); err != nil {
+		return err
+	}
+
+	if user_model.IsUserBlockedBy(ctx, issue.Poster, repo.OwnerID) || user_model.IsUserBlockedBy(ctx, issue.Poster, assigneeIDs...) {
+		return user_model.ErrBlockedUser
+	}
+
 	if err := issues_model.NewIssue(ctx, repo, issue, labelIDs, uuids); err != nil {
 		return err
 	}
@@ -57,6 +66,16 @@ func ChangeTitle(ctx context.Context, issue *issues_model.Issue, doer *user_mode
 		return nil
 	}
 
+	if err := issue.LoadRepo(ctx); err != nil {
+		return err
+	}
+
+	if user_model.IsUserBlockedBy(ctx, doer, issue.PosterID, issue.Repo.OwnerID) {
+		if isAdmin, _ := access_model.IsUserRepoAdmin(ctx, issue.Repo, doer); !isAdmin {
+			return user_model.ErrBlockedUser
+		}
+	}
+
 	if err := issues_model.ChangeIssueTitle(ctx, issue, doer, oldTitle); err != nil {
 		return err
 	}
@@ -93,31 +112,25 @@ func ChangeIssueRef(ctx context.Context, issue *issues_model.Issue, doer *user_m
 // Pass one or more user logins to replace the set of assignees on this Issue.
 // Send an empty array ([]) to clear all assignees from the Issue.
 func UpdateAssignees(ctx context.Context, issue *issues_model.Issue, oneAssignee string, multipleAssignees []string, doer *user_model.User) (err error) {
-	var allNewAssignees []*user_model.User
+	uniqueAssignees := container.SetOf(multipleAssignees...)
 
 	// Keep the old assignee thingy for compatibility reasons
 	if oneAssignee != "" {
-		// Prevent double adding assignees
+		uniqueAssignees.Add(oneAssignee)
-		var isDouble bool
-		for _, assignee := range multipleAssignees {
-			if assignee == oneAssignee {
-				isDouble = true
-				break
-			}
-		}
-
-		if !isDouble {
-			multipleAssignees = append(multipleAssignees, oneAssignee)
-		}
 	}
 
 	// Loop through all assignees to add them
-	for _, assigneeName := range multipleAssignees {
+	allNewAssignees := make([]*user_model.User, 0, len(uniqueAssignees))
+	for _, assigneeName := range uniqueAssignees.Values() {
 		assignee, err := user_model.GetUserByName(ctx, assigneeName)
 		if err != nil {
 			return err
 		}
 
+		if user_model.IsUserBlockedBy(ctx, doer, assignee.ID) {
+			return user_model.ErrBlockedUser
+		}
+
 		allNewAssignees = append(allNewAssignees, assignee)
 	}
 

services/issue/reaction.go

@@ -0,0 +1,50 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package issue
+
+import (
+	"context"
+
+	issues_model "code.gitea.io/gitea/models/issues"
+	user_model "code.gitea.io/gitea/models/user"
+)
+
+// CreateIssueReaction creates a reaction on an issue.
+func CreateIssueReaction(ctx context.Context, doer *user_model.User, issue *issues_model.Issue, content string) (*issues_model.Reaction, error) {
+	if err := issue.LoadRepo(ctx); err != nil {
+		return nil, err
+	}
+
+	if user_model.IsUserBlockedBy(ctx, doer, issue.PosterID, issue.Repo.OwnerID) {
+		return nil, user_model.ErrBlockedUser
+	}
+
+	return issues_model.CreateReaction(ctx, &issues_model.ReactionOptions{
+		Type:    content,
+		DoerID:  doer.ID,
+		IssueID: issue.ID,
+	})
+}
+
+// CreateCommentReaction creates a reaction on a comment.
+func CreateCommentReaction(ctx context.Context, doer *user_model.User, comment *issues_model.Comment, content string) (*issues_model.Reaction, error) {
+	if err := comment.LoadIssue(ctx); err != nil {
+		return nil, err
+	}
+
+	if err := comment.Issue.LoadRepo(ctx); err != nil {
+		return nil, err
+	}
+
+	if user_model.IsUserBlockedBy(ctx, doer, comment.Issue.PosterID, comment.Issue.Repo.OwnerID, comment.PosterID) {
+		return nil, user_model.ErrBlockedUser
+	}
+
+	return issues_model.CreateReaction(ctx, &issues_model.ReactionOptions{
+		Type:      content,
+		DoerID:    doer.ID,
+		IssueID:   comment.Issue.ID,
+		CommentID: comment.ID,
+	})
+}

services/issue/reaction_test.go

@@ -1,7 +1,7 @@
 // Copyright 2017 The Gitea Authors. All rights reserved.
 // SPDX-License-Identifier: MIT
 
-package issues_test
+package issue
 
 import (
 	"testing"
@@ -16,13 +16,13 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-func addReaction(t *testing.T, doerID, issueID, commentID int64, content string) {
+func addReaction(t *testing.T, doer *user_model.User, issue *issues_model.Issue, comment *issues_model.Comment, content string) {
 	var reaction *issues_model.Reaction
 	var err error
-	if commentID == 0 {
+	if comment == nil {
-		reaction, err = issues_model.CreateIssueReaction(db.DefaultContext, doerID, issueID, content)
+		reaction, err = CreateIssueReaction(db.DefaultContext, doer, issue, content)
 	} else {
-		reaction, err = issues_model.CreateCommentReaction(db.DefaultContext, doerID, issueID, commentID, content)
+		reaction, err = CreateCommentReaction(db.DefaultContext, doer, comment, content)
 	}
 	assert.NoError(t, err)
 	assert.NotNil(t, reaction)
@@ -32,32 +32,26 @@ func TestIssueAddReaction(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
+	issue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{ID: 1})
 
-	var issue1ID int64 = 1
+	addReaction(t, user1, issue, nil, "heart")
 
-	addReaction(t, user1.ID, issue1ID, 0, "heart")
+	unittest.AssertExistsAndLoadBean(t, &issues_model.Reaction{Type: "heart", UserID: user1.ID, IssueID: issue.ID})
-
-	unittest.AssertExistsAndLoadBean(t, &issues_model.Reaction{Type: "heart", UserID: user1.ID, IssueID: issue1ID})
 }
 
 func TestIssueAddDuplicateReaction(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
+	issue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{ID: 1})
 
-	var issue1ID int64 = 1
+	addReaction(t, user1, issue, nil, "heart")
 
-	addReaction(t, user1.ID, issue1ID, 0, "heart")
+	reaction, err := CreateIssueReaction(db.DefaultContext, user1, issue, "heart")
-
-	reaction, err := issues_model.CreateReaction(db.DefaultContext, &issues_model.ReactionOptions{
-		DoerID:  user1.ID,
-		IssueID: issue1ID,
-		Type:    "heart",
-	})
 	assert.Error(t, err)
 	assert.Equal(t, issues_model.ErrReactionAlreadyExist{Reaction: "heart"}, err)
 
-	existingR := unittest.AssertExistsAndLoadBean(t, &issues_model.Reaction{Type: "heart", UserID: user1.ID, IssueID: issue1ID})
+	existingR := unittest.AssertExistsAndLoadBean(t, &issues_model.Reaction{Type: "heart", UserID: user1.ID, IssueID: issue.ID})
 	assert.Equal(t, existingR.ID, reaction.ID)
 }
 
@@ -65,15 +59,14 @@ func TestIssueDeleteReaction(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
+	issue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{ID: 1})
 
-	var issue1ID int64 = 1
+	addReaction(t, user1, issue, nil, "heart")
 
-	addReaction(t, user1.ID, issue1ID, 0, "heart")
+	err := issues_model.DeleteIssueReaction(db.DefaultContext, user1.ID, issue.ID, "heart")
-
-	err := issues_model.DeleteIssueReaction(db.DefaultContext, user1.ID, issue1ID, "heart")
 	assert.NoError(t, err)
 
-	unittest.AssertNotExistsBean(t, &issues_model.Reaction{Type: "heart", UserID: user1.ID, IssueID: issue1ID})
+	unittest.AssertNotExistsBean(t, &issues_model.Reaction{Type: "heart", UserID: user1.ID, IssueID: issue.ID})
 }
 
 func TestIssueReactionCount(t *testing.T) {
@@ -87,19 +80,19 @@ func TestIssueReactionCount(t *testing.T) {
 	user4 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 4})
 	ghost := user_model.NewGhostUser()
 
-	var issueID int64 = 2
+	issue := unittest.AssertExistsAndLoadBean(t, &issues_model.Issue{ID: 2})
 	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 1})
 
-	addReaction(t, user1.ID, issueID, 0, "heart")
+	addReaction(t, user1, issue, nil, "heart")
-	addReaction(t, user2.ID, issueID, 0, "heart")
+	addReaction(t, user2, issue, nil, "heart")
-	addReaction(t, org3.ID, issueID, 0, "heart")
+	addReaction(t, org3, issue, nil, "heart")
-	addReaction(t, org3.ID, issueID, 0, "+1")
+	addReaction(t, org3, issue, nil, "+1")
-	addReaction(t, user4.ID, issueID, 0, "+1")
+	addReaction(t, user4, issue, nil, "+1")
-	addReaction(t, user4.ID, issueID, 0, "heart")
+	addReaction(t, user4, issue, nil, "heart")
-	addReaction(t, ghost.ID, issueID, 0, "-1")
+	addReaction(t, ghost, issue, nil, "-1")
 
 	reactionsList, _, err := issues_model.FindReactions(db.DefaultContext, issues_model.FindReactionsOptions{
-		IssueID: issueID,
+		IssueID: issue.ID,
 	})
 	assert.NoError(t, err)
 	assert.Len(t, reactionsList, 7)
@@ -122,13 +115,11 @@ func TestIssueCommentAddReaction(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
+	comment := unittest.AssertExistsAndLoadBean(t, &issues_model.Comment{ID: 1})
 
-	var issue1ID int64 = 1
+	addReaction(t, user1, nil, comment, "heart")
-	var comment1ID int64 = 1
 
-	addReaction(t, user1.ID, issue1ID, comment1ID, "heart")
+	unittest.AssertExistsAndLoadBean(t, &issues_model.Reaction{Type: "heart", UserID: user1.ID, IssueID: comment.IssueID, CommentID: comment.ID})
-
-	unittest.AssertExistsAndLoadBean(t, &issues_model.Reaction{Type: "heart", UserID: user1.ID, IssueID: issue1ID, CommentID: comment1ID})
 }
 
 func TestIssueCommentDeleteReaction(t *testing.T) {
@@ -139,17 +130,16 @@ func TestIssueCommentDeleteReaction(t *testing.T) {
 	org3 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 3})
 	user4 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 4})
 
-	var issue1ID int64 = 1
+	comment := unittest.AssertExistsAndLoadBean(t, &issues_model.Comment{ID: 1})
-	var comment1ID int64 = 1
 
-	addReaction(t, user1.ID, issue1ID, comment1ID, "heart")
+	addReaction(t, user1, nil, comment, "heart")
-	addReaction(t, user2.ID, issue1ID, comment1ID, "heart")
+	addReaction(t, user2, nil, comment, "heart")
-	addReaction(t, org3.ID, issue1ID, comment1ID, "heart")
+	addReaction(t, org3, nil, comment, "heart")
-	addReaction(t, user4.ID, issue1ID, comment1ID, "+1")
+	addReaction(t, user4, nil, comment, "+1")
 
 	reactionsList, _, err := issues_model.FindReactions(db.DefaultContext, issues_model.FindReactionsOptions{
-		IssueID:   issue1ID,
+		IssueID:   comment.IssueID,
-		CommentID: comment1ID,
+		CommentID: comment.ID,
 	})
 	assert.NoError(t, err)
 	assert.Len(t, reactionsList, 4)
@@ -163,12 +153,10 @@ func TestIssueCommentReactionCount(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 
 	user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
+	comment := unittest.AssertExistsAndLoadBean(t, &issues_model.Comment{ID: 1})
 
-	var issue1ID int64 = 1
+	addReaction(t, user1, nil, comment, "heart")
-	var comment1ID int64 = 1
+	assert.NoError(t, issues_model.DeleteCommentReaction(db.DefaultContext, user1.ID, comment.IssueID, comment.ID, "heart"))
 
-	addReaction(t, user1.ID, issue1ID, comment1ID, "heart")
+	unittest.AssertNotExistsBean(t, &issues_model.Reaction{Type: "heart", UserID: user1.ID, IssueID: comment.IssueID, CommentID: comment.ID})
-	assert.NoError(t, issues_model.DeleteCommentReaction(db.DefaultContext, user1.ID, issue1ID, comment1ID, "heart"))
-
-	unittest.AssertNotExistsBean(t, &issues_model.Reaction{Type: "heart", UserID: user1.ID, IssueID: issue1ID, CommentID: comment1ID})
 }

services/pull/pull.go

@@ -40,6 +40,14 @@ var pullWorkingPool = sync.NewExclusivePool()
 
 // NewPullRequest creates new pull request with labels for repository.
 func NewPullRequest(ctx context.Context, repo *repo_model.Repository, issue *issues_model.Issue, labelIDs []int64, uuids []string, pr *issues_model.PullRequest, assigneeIDs []int64) error {
+	if err := issue.LoadPoster(ctx); err != nil {
+		return err
+	}
+
+	if user_model.IsUserBlockedBy(ctx, issue.Poster, repo.OwnerID) || user_model.IsUserBlockedBy(ctx, issue.Poster, assigneeIDs...) {
+		return user_model.ErrBlockedUser
+	}
+
 	prCtx, cancel, err := createTemporaryRepoForPR(ctx, pr)
 	if err != nil {
 		if !git_model.IsErrBranchNotExist(err) {

services/repository/collaboration.go

@@ -11,13 +11,14 @@ import (
 	"code.gitea.io/gitea/models/db"
 	access_model "code.gitea.io/gitea/models/perm/access"
 	repo_model "code.gitea.io/gitea/models/repo"
+	user_model "code.gitea.io/gitea/models/user"
 )
 
 // DeleteCollaboration removes collaboration relation between the user and repository.
-func DeleteCollaboration(ctx context.Context, repo *repo_model.Repository, uid int64) (err error) {
+func DeleteCollaboration(ctx context.Context, repo *repo_model.Repository, collaborator *user_model.User) (err error) {
 	collaboration := &repo_model.Collaboration{
 		RepoID: repo.ID,
-		UserID: uid,
+		UserID: collaborator.ID,
 	}
 
 	ctx, committer, err := db.TxContext(ctx)
@@ -31,20 +32,25 @@ func DeleteCollaboration(ctx context.Context, repo *repo_model.Repository, uid i
 	} else if has == 0 {
 		return committer.Commit()
 	}
+
+	if err := repo.LoadOwner(ctx); err != nil {
+		return err
+	}
+
 	if err = access_model.RecalculateAccesses(ctx, repo); err != nil {
 		return err
 	}
 
-	if err = repo_model.WatchRepo(ctx, uid, repo.ID, false); err != nil {
+	if err = repo_model.WatchRepo(ctx, collaborator, repo, false); err != nil {
 		return err
 	}
 
-	if err = models.ReconsiderWatches(ctx, repo, uid); err != nil {
+	if err = models.ReconsiderWatches(ctx, repo, collaborator); err != nil {
 		return err
 	}
 
 	// Unassign a user from any issue (s)he has been assigned to in the repository
-	if err := models.ReconsiderRepoIssuesAssignee(ctx, repo, uid); err != nil {
+	if err := models.ReconsiderRepoIssuesAssignee(ctx, repo, collaborator); err != nil {
 		return err
 	}
 

services/repository/collaboration_test.go

@@ -9,6 +9,7 @@ import (
 	"code.gitea.io/gitea/models/db"
 	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/models/unittest"
+	user_model "code.gitea.io/gitea/models/user"
 
 	"github.com/stretchr/testify/assert"
 )
@@ -16,13 +17,15 @@ import (
 func TestRepository_DeleteCollaboration(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 4})
 	repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: 4})
-	assert.NoError(t, repo.LoadOwner(db.DefaultContext))
-	assert.NoError(t, DeleteCollaboration(db.DefaultContext, repo, 4))
-	unittest.AssertNotExistsBean(t, &repo_model.Collaboration{RepoID: repo.ID, UserID: 4})
 
-	assert.NoError(t, DeleteCollaboration(db.DefaultContext, repo, 4))
+	assert.NoError(t, repo.LoadOwner(db.DefaultContext))
-	unittest.AssertNotExistsBean(t, &repo_model.Collaboration{RepoID: repo.ID, UserID: 4})
+	assert.NoError(t, DeleteCollaboration(db.DefaultContext, repo, user))
+	unittest.AssertNotExistsBean(t, &repo_model.Collaboration{RepoID: repo.ID, UserID: user.ID})
+
+	assert.NoError(t, DeleteCollaboration(db.DefaultContext, repo, user))
+	unittest.AssertNotExistsBean(t, &repo_model.Collaboration{RepoID: repo.ID, UserID: user.ID})
 
 	unittest.CheckConsistencyFor(t, &repo_model.Repository{ID: repo.ID})
 }

services/repository/delete.go

@@ -365,24 +365,26 @@ func removeRepositoryFromTeam(ctx context.Context, t *organization.Team, repo *r
 		}
 	}
 
-	teamUsers, err := organization.GetTeamUsersByTeamID(ctx, t.ID)
+	teamMembers, err := organization.GetTeamMembers(ctx, &organization.SearchMembersOptions{
+		TeamID: t.ID,
+	})
 	if err != nil {
-		return fmt.Errorf("getTeamUsersByTeamID: %w", err)
+		return fmt.Errorf("GetTeamMembers: %w", err)
 	}
-	for _, teamUser := range teamUsers {
+	for _, member := range teamMembers {
-		has, err := access_model.HasAccess(ctx, teamUser.UID, repo)
+		has, err := access_model.HasAccess(ctx, member.ID, repo)
 		if err != nil {
 			return err
 		} else if has {
 			continue
 		}
 
-		if err = repo_model.WatchRepo(ctx, teamUser.UID, repo.ID, false); err != nil {
+		if err = repo_model.WatchRepo(ctx, member, repo, false); err != nil {
 			return err
 		}
 
 		// Remove all IssueWatches a user has subscribed to in the repositories
-		if err := issues_model.RemoveIssueWatchersByRepoID(ctx, teamUser.UID, repo.ID); err != nil {
+		if err := issues_model.RemoveIssueWatchersByRepoID(ctx, member.ID, repo.ID); err != nil {
 			return err
 		}
 	}

services/repository/fork.go

@@ -53,6 +53,14 @@ type ForkRepoOptions struct {
 
 // ForkRepository forks a repository
 func ForkRepository(ctx context.Context, doer, owner *user_model.User, opts ForkRepoOptions) (*repo_model.Repository, error) {
+	if err := opts.BaseRepo.LoadOwner(ctx); err != nil {
+		return nil, err
+	}
+
+	if user_model.IsUserBlockedBy(ctx, doer, opts.BaseRepo.Owner.ID) {
+		return nil, user_model.ErrBlockedUser
+	}
+
 	// Fork is prohibited, if user has reached maximum limit of repositories
 	if !owner.CanForkRepo() {
 		return nil, repo_model.ErrReachLimitOfRepo{

services/repository/transfer.go

@@ -139,9 +139,9 @@ func transferOwnership(ctx context.Context, doer *user_model.User, newOwnerName
 	}
 
 	// Remove redundant collaborators.
-	collaborators, err := repo_model.GetCollaborators(ctx, repo.ID, db.ListOptions{})
+	collaborators, _, err := repo_model.GetCollaborators(ctx, &repo_model.FindCollaborationOptions{RepoID: repo.ID})
 	if err != nil {
-		return fmt.Errorf("getCollaborators: %w", err)
+		return fmt.Errorf("GetCollaborators: %w", err)
 	}
 
 	// Dummy object.
@@ -201,13 +201,13 @@ func transferOwnership(ctx context.Context, doer *user_model.User, newOwnerName
 		return fmt.Errorf("decrease old owner repository count: %w", err)
 	}
 
-	if err := repo_model.WatchRepo(ctx, doer.ID, repo.ID, true); err != nil {
+	if err := repo_model.WatchRepo(ctx, doer, repo, true); err != nil {
 		return fmt.Errorf("watchRepo: %w", err)
 	}
 
 	// Remove watch for organization.
 	if oldOwner.IsOrganization() {
-		if err := repo_model.WatchRepo(ctx, oldOwner.ID, repo.ID, false); err != nil {
+		if err := repo_model.WatchRepo(ctx, oldOwner, repo, false); err != nil {
 			return fmt.Errorf("watchRepo [false]: %w", err)
 		}
 	}
@@ -371,6 +371,10 @@ func StartRepositoryTransfer(ctx context.Context, doer, newOwner *user_model.Use
 		return TransferOwnership(ctx, doer, newOwner, repo, teams)
 	}
 
+	if user_model.IsUserBlockedBy(ctx, doer, newOwner.ID) {
+		return user_model.ErrBlockedUser
+	}
+
 	// If new owner is an org and user can create repos he can transfer directly too
 	if newOwner.IsOrganization() {
 		allowed, err := organization.CanCreateOrgRepo(ctx, newOwner.ID, doer.ID)

services/user/block.go

@@ -0,0 +1,308 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package user
+
+import (
+	"context"
+
+	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/models/db"
+	issues_model "code.gitea.io/gitea/models/issues"
+	org_model "code.gitea.io/gitea/models/organization"
+	repo_model "code.gitea.io/gitea/models/repo"
+	user_model "code.gitea.io/gitea/models/user"
+	repo_service "code.gitea.io/gitea/services/repository"
+)
+
+func CanBlockUser(ctx context.Context, doer, blocker, blockee *user_model.User) bool {
+	if blocker.ID == blockee.ID {
+		return false
+	}
+	if doer.ID == blockee.ID {
+		return false
+	}
+
+	if blockee.IsOrganization() {
+		return false
+	}
+
+	if user_model.IsUserBlockedBy(ctx, blockee, blocker.ID) {
+		return false
+	}
+
+	if blocker.IsOrganization() {
+		org := org_model.OrgFromUser(blocker)
+		if isMember, _ := org.IsOrgMember(ctx, blockee.ID); isMember {
+			return false
+		}
+		if isAdmin, _ := org.IsOwnedBy(ctx, doer.ID); !isAdmin && !doer.IsAdmin {
+			return false
+		}
+	} else if !doer.IsAdmin && doer.ID != blocker.ID {
+		return false
+	}
+
+	return true
+}
+
+func CanUnblockUser(ctx context.Context, doer, blocker, blockee *user_model.User) bool {
+	if doer.ID == blockee.ID {
+		return false
+	}
+
+	if !user_model.IsUserBlockedBy(ctx, blockee, blocker.ID) {
+		return false
+	}
+
+	if blocker.IsOrganization() {
+		org := org_model.OrgFromUser(blocker)
+		if isAdmin, _ := org.IsOwnedBy(ctx, doer.ID); !isAdmin && !doer.IsAdmin {
+			return false
+		}
+	} else if !doer.IsAdmin && doer.ID != blocker.ID {
+		return false
+	}
+
+	return true
+}
+
+func BlockUser(ctx context.Context, doer, blocker, blockee *user_model.User, note string) error {
+	if blockee.IsOrganization() {
+		return user_model.ErrBlockOrganization
+	}
+
+	if !CanBlockUser(ctx, doer, blocker, blockee) {
+		return user_model.ErrCanNotBlock
+	}
+
+	return db.WithTx(ctx, func(ctx context.Context) error {
+		// unfollow each other
+		if err := user_model.UnfollowUser(ctx, blocker.ID, blockee.ID); err != nil {
+			return err
+		}
+		if err := user_model.UnfollowUser(ctx, blockee.ID, blocker.ID); err != nil {
+			return err
+		}
+
+		// unstar each other
+		if err := unstarRepos(ctx, blocker, blockee); err != nil {
+			return err
+		}
+		if err := unstarRepos(ctx, blockee, blocker); err != nil {
+			return err
+		}
+
+		// unwatch each others repositories
+		if err := unwatchRepos(ctx, blocker, blockee); err != nil {
+			return err
+		}
+		if err := unwatchRepos(ctx, blockee, blocker); err != nil {
+			return err
+		}
+
+		// unassign each other from issues
+		if err := unassignIssues(ctx, blocker, blockee); err != nil {
+			return err
+		}
+		if err := unassignIssues(ctx, blockee, blocker); err != nil {
+			return err
+		}
+
+		// remove each other from repository collaborations
+		if err := removeCollaborations(ctx, blocker, blockee); err != nil {
+			return err
+		}
+		if err := removeCollaborations(ctx, blockee, blocker); err != nil {
+			return err
+		}
+
+		// cancel each other repository transfers
+		if err := cancelRepositoryTransfers(ctx, blocker, blockee); err != nil {
+			return err
+		}
+		if err := cancelRepositoryTransfers(ctx, blockee, blocker); err != nil {
+			return err
+		}
+
+		return db.Insert(ctx, &user_model.Blocking{
+			BlockerID: blocker.ID,
+			BlockeeID: blockee.ID,
+			Note:      note,
+		})
+	})
+}
+
+func unstarRepos(ctx context.Context, starrer, repoOwner *user_model.User) error {
+	opts := &repo_model.StarredReposOptions{
+		ListOptions: db.ListOptions{
+			Page:     1,
+			PageSize: 25,
+		},
+		StarrerID:   starrer.ID,
+		RepoOwnerID: repoOwner.ID,
+	}
+
+	for {
+		repos, err := repo_model.GetStarredRepos(ctx, opts)
+		if err != nil {
+			return err
+		}
+
+		if len(repos) == 0 {
+			return nil
+		}
+
+		for _, repo := range repos {
+			if err := repo_model.StarRepo(ctx, starrer, repo, false); err != nil {
+				return err
+			}
+		}
+
+		opts.Page++
+	}
+}
+
+func unwatchRepos(ctx context.Context, watcher, repoOwner *user_model.User) error {
+	opts := &repo_model.WatchedReposOptions{
+		ListOptions: db.ListOptions{
+			Page:     1,
+			PageSize: 25,
+		},
+		WatcherID:   watcher.ID,
+		RepoOwnerID: repoOwner.ID,
+	}
+
+	for {
+		repos, _, err := repo_model.GetWatchedRepos(ctx, opts)
+		if err != nil {
+			return err
+		}
+
+		if len(repos) == 0 {
+			return nil
+		}
+
+		for _, repo := range repos {
+			if err := repo_model.WatchRepo(ctx, watcher, repo, false); err != nil {
+				return err
+			}
+		}
+
+		opts.Page++
+	}
+}
+
+func cancelRepositoryTransfers(ctx context.Context, sender, recipient *user_model.User) error {
+	transfers, err := models.GetPendingRepositoryTransfers(ctx, &models.PendingRepositoryTransferOptions{
+		SenderID:    sender.ID,
+		RecipientID: recipient.ID,
+	})
+	if err != nil {
+		return err
+	}
+
+	for _, transfer := range transfers {
+		repo, err := repo_model.GetRepositoryByID(ctx, transfer.RepoID)
+		if err != nil {
+			return err
+		}
+
+		if err := repo_service.CancelRepositoryTransfer(ctx, repo); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func unassignIssues(ctx context.Context, assignee, repoOwner *user_model.User) error {
+	opts := &issues_model.AssignedIssuesOptions{
+		ListOptions: db.ListOptions{
+			Page:     1,
+			PageSize: 25,
+		},
+		AssigneeID:  assignee.ID,
+		RepoOwnerID: repoOwner.ID,
+	}
+
+	for {
+		issues, _, err := issues_model.GetAssignedIssues(ctx, opts)
+		if err != nil {
+			return err
+		}
+
+		if len(issues) == 0 {
+			return nil
+		}
+
+		for _, issue := range issues {
+			if err := issue.LoadAssignees(ctx); err != nil {
+				return err
+			}
+
+			if _, _, err := issues_model.ToggleIssueAssignee(ctx, issue, assignee, assignee.ID); err != nil {
+				return err
+			}
+		}
+
+		opts.Page++
+	}
+}
+
+func removeCollaborations(ctx context.Context, repoOwner, collaborator *user_model.User) error {
+	opts := &repo_model.FindCollaborationOptions{
+		ListOptions: db.ListOptions{
+			Page:     1,
+			PageSize: 25,
+		},
+		CollaboratorID: collaborator.ID,
+		RepoOwnerID:    repoOwner.ID,
+	}
+
+	for {
+		collaborations, _, err := repo_model.GetCollaborators(ctx, opts)
+		if err != nil {
+			return err
+		}
+
+		if len(collaborations) == 0 {
+			return nil
+		}
+
+		for _, collaboration := range collaborations {
+			repo, err := repo_model.GetRepositoryByID(ctx, collaboration.Collaboration.RepoID)
+			if err != nil {
+				return err
+			}
+
+			if err := repo_service.DeleteCollaboration(ctx, repo, collaborator); err != nil {
+				return err
+			}
+		}
+
+		opts.Page++
+	}
+}
+
+func UnblockUser(ctx context.Context, doer, blocker, blockee *user_model.User) error {
+	if blockee.IsOrganization() {
+		return user_model.ErrBlockOrganization
+	}
+
+	if !CanUnblockUser(ctx, doer, blocker, blockee) {
+		return user_model.ErrCanNotUnblock
+	}
+
+	return db.WithTx(ctx, func(ctx context.Context) error {
+		block, err := user_model.GetBlocking(ctx, blocker.ID, blockee.ID)
+		if err != nil {
+			return err
+		}
+		if block != nil {
+			_, err = db.DeleteByID[user_model.Blocking](ctx, block.ID)
+			return err
+		}
+		return nil
+	})
+}

services/user/block_test.go

@@ -0,0 +1,66 @@
+// Copyright 2024 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package user
+
+import (
+	"testing"
+
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
+	user_model "code.gitea.io/gitea/models/user"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestCanBlockUser(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+
+	user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
+	user2 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	user4 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 4})
+	user29 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 29})
+	org3 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 3})
+
+	// Doer can't self block
+	assert.False(t, CanBlockUser(db.DefaultContext, user1, user2, user1))
+	// Blocker can't be blockee
+	assert.False(t, CanBlockUser(db.DefaultContext, user1, user2, user2))
+	// Can't block already blocked user
+	assert.False(t, CanBlockUser(db.DefaultContext, user1, user2, user29))
+	// Blockee can't be an organization
+	assert.False(t, CanBlockUser(db.DefaultContext, user1, user2, org3))
+	// Doer must be blocker or admin
+	assert.False(t, CanBlockUser(db.DefaultContext, user2, user4, user29))
+	// Organization can't block a member
+	assert.False(t, CanBlockUser(db.DefaultContext, user1, org3, user4))
+	// Doer must be organization owner or admin if blocker is an organization
+	assert.False(t, CanBlockUser(db.DefaultContext, user4, org3, user2))
+
+	assert.True(t, CanBlockUser(db.DefaultContext, user1, user2, user4))
+	assert.True(t, CanBlockUser(db.DefaultContext, user2, user2, user4))
+	assert.True(t, CanBlockUser(db.DefaultContext, user2, org3, user29))
+}
+
+func TestCanUnblockUser(t *testing.T) {
+	assert.NoError(t, unittest.PrepareTestDatabase())
+
+	user1 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 1})
+	user2 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+	user28 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 28})
+	user29 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 29})
+	org17 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 17})
+
+	// Doer can't self unblock
+	assert.False(t, CanUnblockUser(db.DefaultContext, user1, user2, user1))
+	// Can't unblock not blocked user
+	assert.False(t, CanUnblockUser(db.DefaultContext, user1, user2, user28))
+	// Doer must be blocker or admin
+	assert.False(t, CanUnblockUser(db.DefaultContext, user28, user2, user29))
+	// Doer must be organization owner or admin if blocker is an organization
+	assert.False(t, CanUnblockUser(db.DefaultContext, user2, org17, user28))
+
+	assert.True(t, CanUnblockUser(db.DefaultContext, user1, user2, user29))
+	assert.True(t, CanUnblockUser(db.DefaultContext, user2, user2, user29))
+	assert.True(t, CanUnblockUser(db.DefaultContext, user1, org17, user28))
+}

services/user/delete.go

@@ -92,6 +92,8 @@ func deleteUser(ctx context.Context, u *user_model.User, purge bool) (err error)
 		&pull_model.ReviewState{UserID: u.ID},
 		&user_model.Redirect{RedirectUserID: u.ID},
 		&actions_model.ActionRunner{OwnerID: u.ID},
+		&user_model.Blocking{BlockerID: u.ID},
+		&user_model.Blocking{BlockeeID: u.ID},
 	); err != nil {
 		return fmt.Errorf("deleteBeans: %w", err)
 	}

services/user/user.go

@@ -188,7 +188,7 @@ func DeleteUser(ctx context.Context, u *user_model.User, purge bool) error {
 				break
 			}
 			for _, org := range orgs {
-				if err := models.RemoveOrgUser(ctx, org.ID, u.ID); err != nil {
+				if err := models.RemoveOrgUser(ctx, org, u); err != nil {
 					if organization.IsErrLastOrgOwner(err) {
 						err = org_service.DeleteOrganization(ctx, org, true)
 						if err != nil {

services/user/user_test.go

@@ -41,7 +41,8 @@ func TestDeleteUser(t *testing.T) {
 		orgUsers := make([]*organization.OrgUser, 0, 10)
 		assert.NoError(t, db.GetEngine(db.DefaultContext).Find(&orgUsers, &organization.OrgUser{UID: userID}))
 		for _, orgUser := range orgUsers {
-			if err := models.RemoveOrgUser(db.DefaultContext, orgUser.OrgID, orgUser.UID); err != nil {
+			org := unittest.AssertExistsAndLoadBean(t, &organization.Organization{ID: orgUser.OrgID})
+			if err := models.RemoveOrgUser(db.DefaultContext, org, user); err != nil {
 				assert.True(t, organization.IsErrLastOrgOwner(err))
 				return
 			}

templates/org/settings/blocked_users.tmpl

@@ -0,0 +1,5 @@
+{{template "org/settings/layout_head" (dict "ctxData" . "pageClass" "organization settings blocked_users")}}
+<div class="org-setting-content">
+	{{template "shared/user/blocked_users" .}}
+</div>
+{{template "org/settings/layout_footer" .}}

templates/org/settings/navbar.tmpl

@@ -17,6 +17,9 @@
 			{{ctx.Locale.Tr "settings.applications"}}
 		</a>
 		{{end}}
+		<a class="{{if .PageIsSettingsBlockedUsers}}active {{end}}item" href="{{.OrgLink}}/settings/blocked_users">
+			{{ctx.Locale.Tr "user.block.list"}}
+		</a>
 		{{if .EnablePackages}}
 		<a class="{{if .PageIsSettingsPackages}}active {{end}}item" href="{{.OrgLink}}/settings/packages">
 			{{ctx.Locale.Tr "packages.title"}}

templates/repo/diff/box.tmpl

@@ -251,5 +251,6 @@
 	{{end}}
 	{{if (not .DiffNotAvailable)}}
 		{{template "repo/issue/view_content/reference_issue_dialog" .}}
+		{{template "shared/user/block_user_dialog" .}}
 	{{end}}
 </div>

templates/repo/issue/view_content.tmpl

@@ -170,6 +170,7 @@
 </template>
 
 {{template "repo/issue/view_content/reference_issue_dialog" .}}
+{{template "shared/user/block_user_dialog" .}}
 
 <div class="gt-hidden" id="no-content">
 	<span class="no-content">{{ctx.Locale.Tr "repo.issues.no_content"}}</span>

templates/repo/issue/view_content/context_menu.tmpl

@@ -10,7 +10,10 @@
 			{{$referenceUrl = printf "%s/files#%s" .ctxData.Issue.Link .item.HashTag}}
 		{{end}}
 		<div class="item context js-aria-clickable" data-clipboard-text-type="url" data-clipboard-text="{{$referenceUrl}}">{{ctx.Locale.Tr "repo.issues.context.copy_link"}}</div>
-		{{if and .ctxData.IsSigned (not .ctxData.Repository.IsArchived)}}
+		{{if .ctxData.IsSigned}}
+			{{$needDivider := false}}
+			{{if not .ctxData.Repository.IsArchived}}
+				{{$needDivider = true}}
 				<div class="item context js-aria-clickable quote-reply {{if .diff}}quote-reply-diff{{end}}" data-target="{{.item.HashTag}}-raw">{{ctx.Locale.Tr "repo.issues.context.quote_reply"}}</div>
 				{{if not .ctxData.UnitIssuesGlobalDisabled}}
 					<div class="item context js-aria-clickable reference-issue" data-target="{{.item.HashTag}}-raw" data-modal="#reference-issue-modal" data-poster="{{.item.Poster.GetDisplayName}}" data-poster-username="{{.item.Poster.Name}}" data-reference="{{$referenceUrl}}">{{ctx.Locale.Tr "repo.issues.context.reference_issue"}}</div>
@@ -23,5 +26,19 @@
 					{{end}}
 				{{end}}
 			{{end}}
+			{{$canUserBlock := call .ctxData.CanBlockUser .ctxData.SignedUser .item.Poster}}
+			{{$canOrgBlock := and .ctxData.Repository.Owner.IsOrganization (call .ctxData.CanBlockUser .ctxData.Repository.Owner .item.Poster)}}
+			{{if or $canOrgBlock $canUserBlock}}
+				{{if $needDivider}}
+					<div class="divider"></div>
+				{{end}}
+				{{if $canUserBlock}}
+				<div class="item context js-aria-clickable show-modal" data-modal="#block-user-modal" data-modal-modal-blockee="{{.item.Poster.Name}}" data-modal-modal-blockee-name="{{.item.Poster.GetDisplayName}}" data-modal-modal-form.action="{{AppSubUrl}}/user/settings/blocked_users">{{ctx.Locale.Tr "user.block.block.user"}}</div>
+				{{end}}
+				{{if $canOrgBlock}}
+				<div class="item context js-aria-clickable show-modal" data-modal="#block-user-modal" data-modal-modal-blockee="{{.item.Poster.Name}}" data-modal-modal-blockee-name="{{.item.Poster.GetDisplayName}}" data-modal-modal-form.action="{{.ctxData.Repository.Owner.OrganisationLink}}/settings/blocked_users">{{ctx.Locale.Tr "user.block.block.org"}}</div>
+				{{end}}
+			{{end}}
+		{{end}}
 	</div>
 </div>

templates/shared/user/block_user_dialog.tmpl

@@ -0,0 +1,23 @@
+<div class="ui small modal" id="block-user-modal">
+	<div class="header">{{ctx.Locale.Tr "user.block.title"}}</div>
+	<div class="content">
+		<div class="ui warning message">{{ctx.Locale.Tr "user.block.info"}}</div>
+		<form class="ui form modal-form" method="post">
+			{{.CsrfTokenHtml}}
+			<input type="hidden" name="action" value="block" />
+			<input type="hidden" name="blockee" class="modal-blockee" />
+			<div class="field">
+				<label>{{ctx.Locale.Tr "user.block.user_to_block"}}: <span class="text red modal-blockee-name"></span></label>
+			</div>
+			<div class="field">
+				<label for="block-note">{{ctx.Locale.Tr "user.block.note.title"}}</label>
+				<input id="block-note" name="note">
+				<p class="help">{{ctx.Locale.Tr "user.block.note.info"}}</p>
+			</div>
+			<div class="text right actions">
+				<button class="ui cancel button">{{ctx.Locale.Tr "cancel"}}</button>
+				<button class="ui red button">{{ctx.Locale.Tr "user.block.block"}}</button>
+			</div>
+		</form>
+	</div>
+</div>

templates/shared/user/blocked_users.tmpl

@@ -0,0 +1,83 @@
+<h4 class="ui top attached header">
+	{{ctx.Locale.Tr "user.block.title"}}
+</h4>
+<div class="ui attached segment">
+	<p>{{ctx.Locale.Tr "user.block.info_1"}}</p>
+	<ul>
+		<li>{{ctx.Locale.Tr "user.block.info_2"}}</li>
+		<li>{{ctx.Locale.Tr "user.block.info_3"}}</li>
+		<li>{{ctx.Locale.Tr "user.block.info_4"}}</li>
+		<li>{{ctx.Locale.Tr "user.block.info_5"}}</li>
+		<li>{{ctx.Locale.Tr "user.block.info_6"}}</li>
+		<li>{{ctx.Locale.Tr "user.block.info_7"}}</li>
+	</ul>
+</div>
+<div class="ui segment">
+	<form class="ui form ignore-dirty" action="{{$.Link}}" method="post">
+		{{.CsrfTokenHtml}}
+		<input type="hidden" name="action" value="block" />
+		<div id="search-user-box" class="field ui fluid search input">
+			<input class="prompt gt-mr-3" name="blockee" placeholder="{{ctx.Locale.Tr "repo.settings.search_user_placeholder"}}" autocomplete="off" required>
+			<button class="ui red button">{{ctx.Locale.Tr "user.block.block"}}</button>
+		</div>
+		<div class="field">
+			<label>{{ctx.Locale.Tr "user.block.note.title"}}</label>
+			<input name="note">
+			<p class="help">{{ctx.Locale.Tr "user.block.note.info"}}</p>
+		</div>
+	</form>
+</div>
+<h4 class="ui top attached header">
+	{{ctx.Locale.Tr "user.block.list"}}
+</h4>
+<div class="ui attached segment">
+	<div class="flex-list">
+		{{range .UserBlocks}}
+			<div class="flex-item">
+				<div class="flex-item-leading">
+					{{ctx.AvatarUtils.Avatar .Blockee}}
+				</div>
+				<div class="flex-item-main">
+					<div class="flex-item-title">
+						<a class="item" href="{{.Blockee.HTMLURL}}">{{.Blockee.GetDisplayName}}</a>
+					</div>
+					{{if .Note}}
+					<div class="flex-item-body">
+						<i>{{ctx.Locale.Tr "user.block.note"}}:</i> {{.Note}}
+					</div>
+					{{end}}
+				</div>
+				<div class="flex-item-trailing">
+					<button class="ui compact mini button show-modal" data-modal="#block-user-note-modal" data-modal-modal-blockee="{{.Blockee.Name}}" data-modal-modal-note="{{.Note}}">{{ctx.Locale.Tr "user.block.note.edit"}}</button>
+					<form action="{{$.Link}}" method="post">
+						{{$.CsrfTokenHtml}}
+						<input type="hidden" name="action" value="unblock" />
+						<input type="hidden" name="blockee" value="{{.Blockee.Name}}" />
+						<button class="ui compact mini button">{{ctx.Locale.Tr "user.block.unblock"}}</button>
+					</form>
+				</div>
+			</div>
+		{{else}}
+			<div class="item">{{ctx.Locale.Tr "user.block.list.none"}}</div>
+		{{end}}
+	</div>
+</div>
+<div class="ui small modal" id="block-user-note-modal">
+	<div class="header">{{ctx.Locale.Tr "user.block.note.edit"}}</div>
+	<div class="content">
+		<form class="ui form" action="{{$.Link}}" method="post">
+			{{.CsrfTokenHtml}}
+			<input type="hidden" name="action" value="note" />
+			<input type="hidden" name="blockee" class="modal-blockee" />
+			<div class="field">
+				<label>{{ctx.Locale.Tr "user.block.note.title"}}</label>
+				<input name="note" class="modal-note" />
+				<p class="help">{{ctx.Locale.Tr "user.block.note.info"}}</p>
+			</div>
+			<div class="text right actions">
+				<button class="ui cancel button">{{ctx.Locale.Tr "cancel"}}</button>
+				<button class="ui primary button">{{ctx.Locale.Tr "save"}}</button>
+			</div>
+		</form>
+	</div>
+</div>

templates/shared/user/profile_big_avatar.tmpl

@@ -27,6 +27,12 @@
 	</div>
 	<div class="extra content gt-word-break">
 		<ul>
+			{{if .UserBlocking}}
+				<li class="text red">{{svg "octicon-circle-slash"}} {{ctx.Locale.Tr "user.block.blocked"}}</li>
+				{{if .UserBlocking.Note}}
+					<li class="text small red">{{ctx.Locale.Tr "user.block.note"}}: {{.UserBlocking.Note}}</li>
+				{{end}}
+			{{end}}
 			{{if .ContextUser.Location}}
 				<li>
 					{{svg "octicon-location"}}
@@ -109,6 +115,7 @@
 			</li>
 			{{end}}
 			{{if and .IsSigned (ne .SignedUserID .ContextUser.ID)}}
+				{{if not .UserBlocking}}
 				<li class="follow" hx-target="#profile-avatar-card" hx-indicator="#profile-avatar-card">
 					{{if $.IsFollowing}}
 						<button hx-post="{{.ContextUser.HomeLink}}?action=unfollow" class="ui basic red button">
@@ -121,6 +128,16 @@
 					{{end}}
 				</li>
 				{{end}}
+				<li>
+					{{if not .UserBlocking}}
+						<a class="muted show-modal" href="#" data-modal="#block-user-modal" data-modal-modal-blockee="{{.ContextUser.Name}}" data-modal-modal-blockee-name="{{.ContextUser.GetDisplayName}}" data-modal-modal-form.action="{{AppSubUrl}}/user/settings/blocked_users">{{ctx.Locale.Tr "user.block.block.user"}}</a>
+					{{else}}
+						<a class="muted" href="{{AppSubUrl}}/user/settings/blocked_users">{{ctx.Locale.Tr "user.block.unblock"}}</a>
+					{{end}}
+				</li>
+			{{end}}
 		</ul>
 	</div>
 </div>
+
+{{template "shared/user/block_user_dialog" .}}

templates/swagger/v1_json.tmpl

@@ -1955,6 +1955,151 @@
         }
       }
     },
+    "/orgs/{org}/blocks": {
+      "get": {
+        "produces": [
+          "application/json"
+        ],
+        "tags": [
+          "organization"
+        ],
+        "summary": "List users blocked by the organization",
+        "operationId": "organizationListBlocks",
+        "parameters": [
+          {
+            "type": "string",
+            "description": "name of the organization",
+            "name": "org",
+            "in": "path",
+            "required": true
+          },
+          {
+            "type": "integer",
+            "description": "page number of results to return (1-based)",
+            "name": "page",
+            "in": "query"
+          },
+          {
+            "type": "integer",
+            "description": "page size of results",
+            "name": "limit",
+            "in": "query"
+          }
+        ],
+        "responses": {
+          "200": {
+            "$ref": "#/responses/UserList"
+          }
+        }
+      }
+    },
+    "/orgs/{org}/blocks/{username}": {
+      "get": {
+        "tags": [
+          "organization"
+        ],
+        "summary": "Check if a user is blocked by the organization",
+        "operationId": "organizationCheckUserBlock",
+        "parameters": [
+          {
+            "type": "string",
+            "description": "name of the organization",
+            "name": "org",
+            "in": "path",
+            "required": true
+          },
+          {
+            "type": "string",
+            "description": "user to check",
+            "name": "username",
+            "in": "path",
+            "required": true
+          }
+        ],
+        "responses": {
+          "204": {
+            "$ref": "#/responses/empty"
+          },
+          "404": {
+            "$ref": "#/responses/notFound"
+          }
+        }
+      },
+      "put": {
+        "tags": [
+          "organization"
+        ],
+        "summary": "Block a user",
+        "operationId": "organizationBlockUser",
+        "parameters": [
+          {
+            "type": "string",
+            "description": "name of the organization",
+            "name": "org",
+            "in": "path",
+            "required": true
+          },
+          {
+            "type": "string",
+            "description": "user to block",
+            "name": "username",
+            "in": "path",
+            "required": true
+          },
+          {
+            "type": "string",
+            "description": "optional note for the block",
+            "name": "note",
+            "in": "query"
+          }
+        ],
+        "responses": {
+          "204": {
+            "$ref": "#/responses/empty"
+          },
+          "404": {
+            "$ref": "#/responses/notFound"
+          },
+          "422": {
+            "$ref": "#/responses/validationError"
+          }
+        }
+      },
+      "delete": {
+        "tags": [
+          "organization"
+        ],
+        "summary": "Unblock a user",
+        "operationId": "organizationUnblockUser",
+        "parameters": [
+          {
+            "type": "string",
+            "description": "name of the organization",
+            "name": "org",
+            "in": "path",
+            "required": true
+          },
+          {
+            "type": "string",
+            "description": "user to unblock",
+            "name": "username",
+            "in": "path",
+            "required": true
+          }
+        ],
+        "responses": {
+          "204": {
+            "$ref": "#/responses/empty"
+          },
+          "404": {
+            "$ref": "#/responses/notFound"
+          },
+          "422": {
+            "$ref": "#/responses/validationError"
+          }
+        }
+      }
+    },
     "/orgs/{org}/hooks": {
       "get": {
         "produces": [
@@ -4340,6 +4485,9 @@
           "204": {
             "$ref": "#/responses/empty"
           },
+          "403": {
+            "$ref": "#/responses/forbidden"
+          },
           "404": {
             "$ref": "#/responses/notFound"
           },
@@ -6692,6 +6840,9 @@
           "400": {
             "$ref": "#/responses/error"
           },
+          "403": {
+            "$ref": "#/responses/forbidden"
+          },
           "404": {
             "$ref": "#/responses/error"
           },
@@ -10461,6 +10612,9 @@
           "201": {
             "$ref": "#/responses/PullRequest"
           },
+          "403": {
+            "$ref": "#/responses/forbidden"
+          },
           "404": {
             "$ref": "#/responses/notFound"
           },
@@ -12959,6 +13113,9 @@
           "200": {
             "$ref": "#/responses/WatchInfo"
           },
+          "403": {
+            "$ref": "#/responses/forbidden"
+          },
           "404": {
             "$ref": "#/responses/notFound"
           }
@@ -14513,6 +14670,9 @@
           "204": {
             "$ref": "#/responses/empty"
           },
+          "403": {
+            "$ref": "#/responses/forbidden"
+          },
           "404": {
             "$ref": "#/responses/notFound"
           }
@@ -15081,6 +15241,123 @@
         }
       }
     },
+    "/user/blocks": {
+      "get": {
+        "produces": [
+          "application/json"
+        ],
+        "tags": [
+          "user"
+        ],
+        "summary": "List users blocked by the authenticated user",
+        "operationId": "userListBlocks",
+        "parameters": [
+          {
+            "type": "integer",
+            "description": "page number of results to return (1-based)",
+            "name": "page",
+            "in": "query"
+          },
+          {
+            "type": "integer",
+            "description": "page size of results",
+            "name": "limit",
+            "in": "query"
+          }
+        ],
+        "responses": {
+          "200": {
+            "$ref": "#/responses/UserList"
+          }
+        }
+      }
+    },
+    "/user/blocks/{username}": {
+      "get": {
+        "tags": [
+          "user"
+        ],
+        "summary": "Check if a user is blocked by the authenticated user",
+        "operationId": "userCheckUserBlock",
+        "parameters": [
+          {
+            "type": "string",
+            "description": "user to check",
+            "name": "username",
+            "in": "path",
+            "required": true
+          }
+        ],
+        "responses": {
+          "204": {
+            "$ref": "#/responses/empty"
+          },
+          "404": {
+            "$ref": "#/responses/notFound"
+          }
+        }
+      },
+      "put": {
+        "tags": [
+          "user"
+        ],
+        "summary": "Block a user",
+        "operationId": "userBlockUser",
+        "parameters": [
+          {
+            "type": "string",
+            "description": "user to block",
+            "name": "username",
+            "in": "path",
+            "required": true
+          },
+          {
+            "type": "string",
+            "description": "optional note for the block",
+            "name": "note",
+            "in": "query"
+          }
+        ],
+        "responses": {
+          "204": {
+            "$ref": "#/responses/empty"
+          },
+          "404": {
+            "$ref": "#/responses/notFound"
+          },
+          "422": {
+            "$ref": "#/responses/validationError"
+          }
+        }
+      },
+      "delete": {
+        "tags": [
+          "user"
+        ],
+        "summary": "Unblock a user",
+        "operationId": "userUnblockUser",
+        "parameters": [
+          {
+            "type": "string",
+            "description": "user to unblock",
+            "name": "username",
+            "in": "path",
+            "required": true
+          }
+        ],
+        "responses": {
+          "204": {
+            "$ref": "#/responses/empty"
+          },
+          "404": {
+            "$ref": "#/responses/notFound"
+          },
+          "422": {
+            "$ref": "#/responses/validationError"
+          }
+        }
+      }
+    },
     "/user/emails": {
       "get": {
         "produces": [
@@ -15258,6 +15535,9 @@
           "204": {
             "$ref": "#/responses/empty"
           },
+          "403": {
+            "$ref": "#/responses/forbidden"
+          },
           "404": {
             "$ref": "#/responses/notFound"
           }
@@ -15965,6 +16245,9 @@
           "204": {
             "$ref": "#/responses/empty"
           },
+          "403": {
+            "$ref": "#/responses/forbidden"
+          },
           "404": {
             "$ref": "#/responses/notFound"
           }

templates/user/settings/blocked_users.tmpl

@@ -0,0 +1,5 @@
+{{template "user/settings/layout_head" (dict "ctxData" . "pageClass" "user settings blocked_users")}}
+	<div class="user-setting-content">
+		{{template "shared/user/blocked_users" .}}
+	</div>
+{{template "user/settings/layout_footer" .}}

templates/user/settings/navbar.tmpl

@@ -13,6 +13,9 @@
 		<a class="{{if .PageIsSettingsSecurity}}active {{end}}item" href="{{AppSubUrl}}/user/settings/security">
 			{{ctx.Locale.Tr "settings.security"}}
 		</a>
+		<a class="{{if .PageIsSettingsBlockedUsers}}active {{end}}item" href="{{AppSubUrl}}/user/settings/blocked_users">
+			{{ctx.Locale.Tr "user.block.list"}}
+		</a>
 		<a class="{{if .PageIsSettingsApplications}}active {{end}}item" href="{{AppSubUrl}}/user/settings/applications">
 			{{ctx.Locale.Tr "settings.applications"}}
 		</a>