Enable stricter linting with golangci-lint (#316)

* update golangci-lint

* add golangci config file w/ more linters

* correct issues flagged by stricter linters

* add more generous timeout for golangci-lint

* add some style + formatting guidelines

* move timeout to config file

* go fmt

internal/db/bundb/account.go

@@ -137,8 +137,7 @@ func (a *accountDB) GetInstanceAccount(ctx context.Context, domain string) (*gts
 			WhereGroup(" AND ", whereEmptyOrNull("domain"))
 	}
 
-	err := q.Scan(ctx)
-	if err != nil {
+	if err := q.Scan(ctx); err != nil {
 		return nil, a.conn.ProcessError(err)
 	}
 	return account, nil
@@ -155,8 +154,7 @@ func (a *accountDB) GetAccountLastPosted(ctx context.Context, accountID string)
 		Where("account_id = ?", accountID).
 		Column("created_at")
 
-	err := q.Scan(ctx)
-	if err != nil {
+	if err := q.Scan(ctx); err != nil {
 		return time.Time{}, a.conn.ProcessError(err)
 	}
 	return status.CreatedAt, nil
@@ -168,11 +166,12 @@ func (a *accountDB) SetAccountHeaderOrAvatar(ctx context.Context, mediaAttachmen
 	}
 
 	var headerOrAVI string
-	if mediaAttachment.Avatar {
+	switch {
+	case mediaAttachment.Avatar:
 		headerOrAVI = "avatar"
-	} else if mediaAttachment.Header {
+	case mediaAttachment.Header:
 		headerOrAVI = "header"
-	} else {
+	default:
 		return errors.New("given media attachment was neither a header nor an avatar")
 	}
 
@@ -202,8 +201,7 @@ func (a *accountDB) GetLocalAccountByUsername(ctx context.Context, username stri
 		Where("username = ?", username).
 		WhereGroup(" AND ", whereEmptyOrNull("domain"))
 
-	err := q.Scan(ctx)
-	if err != nil {
+	if err := q.Scan(ctx); err != nil {
 		return nil, a.conn.ProcessError(err)
 	}
 	return account, nil
@@ -308,8 +306,7 @@ func (a *accountDB) GetAccountBlocks(ctx context.Context, accountID string, maxI
 		fq = fq.Limit(limit)
 	}
 
-	err := fq.Scan(ctx)
-	if err != nil {
+	if err := fq.Scan(ctx); err != nil {
 		return nil, "", "", a.conn.ProcessError(err)
 	}
 

internal/db/bundb/bundb.go

@@ -54,7 +54,7 @@ const (
 	dbTypeSqlite   = "sqlite"
 )
 
-var registerTables []interface{} = []interface{}{
+var registerTables = []interface{}{
 	&gtsmodel.StatusToEmoji{},
 	&gtsmodel.StatusToTag{},
 }
@@ -220,7 +220,7 @@ func sqliteConn(ctx context.Context, c *config.Config) (*DBConn, error) {
 	}
 
 	tweakConnectionValues(sqldb)
-	
+
 	if c.DBConfig.Address == "file::memory:?cache=shared" {
 		logrus.Warn("sqlite in-memory database should only be used for debugging")
 		// don't close connections on disconnect -- otherwise
@@ -248,11 +248,11 @@ func pgConn(ctx context.Context, c *config.Config) (*DBConn, error) {
 	if err != nil {
 		return nil, fmt.Errorf("could not create bundb postgres options: %s", err)
 	}
-	
+
 	sqldb := stdlib.OpenDB(*opts)
-	
+
 	tweakConnectionValues(sqldb)
-	
+
 	conn := WrapDBConn(bun.NewDB(sqldb, pgdialect.New()))
 
 	// ping to check the db is there and listening
@@ -305,6 +305,7 @@ func deriveBunDBPGOptions(c *config.Config) (*pgx.ConnConfig, error) {
 	case config.DBTLSModeDisable, config.DBTLSModeUnset:
 		break // nothing to do
 	case config.DBTLSModeEnable:
+		/* #nosec G402 */
 		tlsConfig = &tls.Config{
 			InsecureSkipVerify: true,
 		}
@@ -312,6 +313,7 @@ func deriveBunDBPGOptions(c *config.Config) (*pgx.ConnConfig, error) {
 		tlsConfig = &tls.Config{
 			InsecureSkipVerify: false,
 			ServerName:         c.DBConfig.Address,
+			MinVersion:         tls.VersionTLS12,
 		}
 	}
 

internal/db/bundb/instance.go

@@ -116,8 +116,7 @@ func (i *instanceDB) GetInstanceAccounts(ctx context.Context, domain string, max
 		q = q.Limit(limit)
 	}
 
-	err := q.Scan(ctx)
-	if err != nil {
+	if err := q.Scan(ctx); err != nil {
 		return nil, i.conn.ProcessError(err)
 	}
 	return accounts, nil

internal/db/bundb/media.go

@@ -45,8 +45,7 @@ func (m *mediaDB) GetAttachmentByID(ctx context.Context, id string) (*gtsmodel.M
 	q := m.newMediaQ(attachment).
 		Where("media_attachment.id = ?", id)
 
-	err := q.Scan(ctx)
-	if err != nil {
+	if err := q.Scan(ctx); err != nil {
 		return nil, m.conn.ProcessError(err)
 	}
 	return attachment, nil

internal/db/bundb/mention.go

@@ -61,8 +61,7 @@ func (m *mentionDB) getMentionDB(ctx context.Context, id string) (*gtsmodel.Ment
 	q := m.newMentionQ(mention).
 		Where("mention.id = ?", id)
 
-	err := q.Scan(ctx)
-	if err != nil {
+	if err := q.Scan(ctx); err != nil {
 		return nil, m.conn.ProcessError(err)
 	}
 

internal/db/bundb/notification.go

@@ -125,8 +125,7 @@ func (n *notificationDB) getNotificationDB(ctx context.Context, id string, dst *
 	q := n.newNotificationQ(dst).
 		Where("notification.id = ?", id)
 
-	err := q.Scan(ctx)
-	if err != nil {
+	if err := q.Scan(ctx); err != nil {
 		return n.conn.ProcessError(err)
 	}
 

internal/db/bundb/relationship.go

@@ -74,8 +74,7 @@ func (r *relationshipDB) GetBlock(ctx context.Context, account1 string, account2
 		Where("block.account_id = ?", account1).
 		Where("block.target_account_id = ?", account2)
 
-	err := q.Scan(ctx)
-	if err != nil {
+	if err := q.Scan(ctx); err != nil {
 		return nil, r.conn.ProcessError(err)
 	}
 	return block, nil
@@ -286,8 +285,7 @@ func (r *relationshipDB) GetAccountFollowRequests(ctx context.Context, accountID
 	q := r.newFollowQ(&followRequests).
 		Where("target_account_id = ?", accountID)
 
-	err := q.Scan(ctx)
-	if err != nil {
+	if err := q.Scan(ctx); err != nil {
 		return nil, r.conn.ProcessError(err)
 	}
 	return followRequests, nil
@@ -299,8 +297,7 @@ func (r *relationshipDB) GetAccountFollows(ctx context.Context, accountID string
 	q := r.newFollowQ(&follows).
 		Where("account_id = ?", accountID)
 
-	err := q.Scan(ctx)
-	if err != nil {
+	if err := q.Scan(ctx); err != nil {
 		return nil, r.conn.ProcessError(err)
 	}
 	return follows, nil

internal/db/bundb/session.go

@@ -47,7 +47,7 @@ func (s *sessionDB) GetSession(ctx context.Context) (*gtsmodel.RouterSession, db
 		return nil, s.conn.ProcessError(err)
 	}
 
-	if len(rss) <= 0 {
+	if len(rss) == 0 {
 		// no session created yet, so make one
 		return s.createSession(ctx)
 	}

internal/db/bundb/status.go

@@ -23,6 +23,7 @@ import (
 	"context"
 	"time"
 
+	"github.com/sirupsen/logrus"
 	"github.com/superseriousbusiness/gotosocial/internal/cache"
 	"github.com/superseriousbusiness/gotosocial/internal/config"
 	"github.com/superseriousbusiness/gotosocial/internal/db"
@@ -206,7 +207,11 @@ func (s *statusDB) GetStatusChildren(ctx context.Context, status *gtsmodel.Statu
 	children := []*gtsmodel.Status{}
 	for e := foundStatuses.Front(); e != nil; e = e.Next() {
 		// only append children, not the overall parent status
-		entry := e.Value.(*gtsmodel.Status)
+		entry, ok := e.Value.(*gtsmodel.Status)
+		if !ok {
+			logrus.Panic("GetStatusChildren: found status could not be asserted to *gtsmodel.Status")
+		}
+
 		if entry.ID != status.ID {
 			children = append(children, entry)
 		}
@@ -233,7 +238,11 @@ func (s *statusDB) statusChildren(ctx context.Context, status *gtsmodel.Status,
 	for _, child := range immediateChildren {
 	insertLoop:
 		for e := foundStatuses.Front(); e != nil; e = e.Next() {
-			entry := e.Value.(*gtsmodel.Status)
+			entry, ok := e.Value.(*gtsmodel.Status)
+			if !ok {
+				logrus.Panic("statusChildren: found status could not be asserted to *gtsmodel.Status")
+			}
+
 			if child.InReplyToAccountID != "" && entry.ID == child.InReplyToID {
 				foundStatuses.InsertAfter(child, e)
 				break insertLoop
@@ -306,8 +315,7 @@ func (s *statusDB) GetStatusFaves(ctx context.Context, status *gtsmodel.Status)
 	q := s.newFaveQ(&faves).
 		Where("status_id = ?", status.ID)
 
-	err := q.Scan(ctx)
-	if err != nil {
+	if err := q.Scan(ctx); err != nil {
 		return nil, s.conn.ProcessError(err)
 	}
 	return faves, nil
@@ -319,8 +327,7 @@ func (s *statusDB) GetStatusReblogs(ctx context.Context, status *gtsmodel.Status
 	q := s.newStatusQ(&reblogs).
 		Where("boost_of_id = ?", status.ID)
 
-	err := q.Scan(ctx)
-	if err != nil {
+	if err := q.Scan(ctx); err != nil {
 		return nil, s.conn.ProcessError(err)
 	}
 	return reblogs, nil

internal/db/bundb/timeline.go

@@ -91,8 +91,7 @@ func (t *timelineDB) GetHomeTimeline(ctx context.Context, accountID string, maxI
 
 	q = q.WhereGroup(" AND ", whereGroup)
 
-	err := q.Scan(ctx)
-	if err != nil {
+	if err := q.Scan(ctx); err != nil {
 		return nil, t.conn.ProcessError(err)
 	}
 	return statuses, nil
@@ -136,8 +135,7 @@ func (t *timelineDB) GetPublicTimeline(ctx context.Context, accountID string, ma
 		q = q.Limit(limit)
 	}
 
-	err := q.Scan(ctx)
-	if err != nil {
+	if err := q.Scan(ctx); err != nil {
 		return nil, t.conn.ProcessError(err)
 	}
 	return statuses, nil