[chore] Upgrade golangci-lint, ignore existing int overflow warnings (#…

…3420)

* [chore] Bump tooling versions, bump go -> v1.23.0

* undo silly change

* sign

* bump go version in go.mod

* allow overflow in imaging

* goreleaser deprecation notices

* [chore] Upgrade golangci-lint, ignore existing int overflow warnings

There is a new lint for unchecked int casts. Integer overflows are bad,
but the old code that triggers this lint seems to be perfectly fine.
Instead of disabling the lint entirely for new code as well, grandfather
in existing code.

* fix golangci-lint documentation link

* revert unrelated changes

* revert another unrelated change

* get rid of remaining nolint:gosec

* swagger updates

* apply review feedback

* fix wrong formatting specifier thing

* fix the linter for real

---------

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

CONTRIBUTING.md

@@ -385,7 +385,7 @@ We use [golangci-lint](https://golangci-lint.run/) for linting, which allows us
 
 If you make a PR that doesn't pass the linter, it will be rejected. As such, it's good practice to run the linter locally before pushing or opening a PR.
 
-To do this, first install the linter following the instructions [here](https://golangci-lint.run/usage/install/#local-installation).
+To do this, first install the linter following the instructions [here](https://golangci-lint.run/welcome/install/).
 
 Then, you can run the linter with:
 

docs/api/swagger.yaml

@@ -2114,7 +2114,7 @@ definitions:
             bitrate:
                 description: Bitrate of the media in bits per second.
                 example: 1000000
-                format: int64
+                format: uint64
                 type: integer
                 x-go-name: Bitrate
             duration:

internal/api/client/admin/emojicreate.go

@@ -145,8 +145,8 @@ func validateCreateEmoji(form *apimodel.EmojiCreateRequest) error {
 		return errors.New("no emoji given")
 	}
 
-	maxSize := config.GetMediaEmojiLocalMaxSize()
-	if form.Image.Size > int64(maxSize) {
+	maxSize := int64(config.GetMediaEmojiLocalMaxSize()) // #nosec G115 -- Already validated.
+	if form.Image.Size > maxSize {
 		return fmt.Errorf("emoji image too large: image is %dKB but size limit for custom emojis is %dKB", form.Image.Size/1024, maxSize/1024)
 	}
 

internal/api/client/admin/emojiupdate.go

@@ -208,8 +208,8 @@ func validateUpdateEmoji(form *apimodel.EmojiUpdateRequest) error {
 		}
 
 		if hasImage {
-			maxSize := config.GetMediaEmojiLocalMaxSize()
-			if form.Image.Size > int64(maxSize) {
+			maxSize := int64(config.GetMediaEmojiLocalMaxSize()) // #nosec G115 -- Already validated.
+			if form.Image.Size > maxSize {
 				return fmt.Errorf("emoji image too large: image is %dKB but size limit for custom emojis is %dKB", form.Image.Size/1024, maxSize/1024)
 			}
 		}

internal/api/model/attachment.go

@@ -160,7 +160,7 @@ type MediaDimensions struct {
 	Duration float32 `json:"duration,omitempty"`
 	// Bitrate of the media in bits per second.
 	// example: 1000000
-	Bitrate int `json:"bitrate,omitempty"`
+	Bitrate uint64 `json:"bitrate,omitempty"`
 	// Size of the media, in the format `[width]x[height]`.
 	// Not set for audio.
 	// example: 1920x1080

internal/cache/domain/domain.go

@@ -220,7 +220,7 @@ func (n *node) getChild(part string) *node {
 
 	for i < j {
 		// avoid overflow when computing h
-		h := int(uint(i+j) >> 1)
+		h := int(uint(i+j) >> 1) // #nosec G115
 		// i ≤ h < j
 
 		if n.child[h].part < part {

internal/db/bundb/bundb.go

@@ -25,6 +25,7 @@ import (
 	"encoding/pem"
 	"errors"
 	"fmt"
+	"math"
 	"net/url"
 	"os"
 	"runtime"
@@ -489,7 +490,10 @@ func deriveBunDBPGOptions() (*pgx.ConnConfig, error) {
 		cfg.Host = address
 	}
 	if port := config.GetDbPort(); port > 0 {
-		cfg.Port = uint16(port)
+		if port > math.MaxUint16 {
+			return nil, errors.New("invalid port, must be in range 1-65535")
+		}
+		cfg.Port = uint16(port) // #nosec G115 -- Just validated above.
 	}
 	if u := config.GetDbUser(); u != "" {
 		cfg.User = u

internal/federation/dereferencing/emoji.go

@@ -97,11 +97,11 @@ func (d *Dereferencer) GetEmoji(
 			}
 
 			// Get maximum supported remote emoji size.
-			maxsz := config.GetMediaEmojiRemoteMaxSize()
+			maxsz := int64(config.GetMediaEmojiRemoteMaxSize()) // #nosec G115 -- Already validated.
 
 			// Prepare data function to dereference remote emoji media.
 			data := func(context.Context) (io.ReadCloser, error) {
-				return tsport.DereferenceMedia(ctx, url, int64(maxsz))
+				return tsport.DereferenceMedia(ctx, url, maxsz)
 			}
 
 			// Create new emoji with prepared info.
@@ -189,11 +189,11 @@ func (d *Dereferencer) RefreshEmoji(
 			}
 
 			// Get maximum supported remote emoji size.
-			maxsz := config.GetMediaEmojiRemoteMaxSize()
+			maxsz := int64(config.GetMediaEmojiRemoteMaxSize()) // #nosec G115 -- Already validated.
 
 			// Prepare data function to dereference remote emoji media.
 			data := func(context.Context) (io.ReadCloser, error) {
-				return tsport.DereferenceMedia(ctx, url, int64(maxsz))
+				return tsport.DereferenceMedia(ctx, url, maxsz)
 			}
 
 			// Update emoji with prepared info.
@@ -255,11 +255,11 @@ func (d *Dereferencer) RecacheEmoji(
 			}
 
 			// Get maximum supported remote emoji size.
-			maxsz := config.GetMediaEmojiRemoteMaxSize()
+			maxsz := int64(config.GetMediaEmojiRemoteMaxSize()) // #nosec G115 -- Already validated.
 
 			// Prepare data function to dereference remote emoji media.
 			data := func(context.Context) (io.ReadCloser, error) {
-				return tsport.DereferenceMedia(ctx, url, int64(maxsz))
+				return tsport.DereferenceMedia(ctx, url, maxsz)
 			}
 
 			// Recache emoji with prepared info.

internal/federation/dereferencing/media.go

@@ -77,14 +77,14 @@ func (d *Dereferencer) GetMedia(
 			}
 
 			// Get maximum supported remote media size.
-			maxsz := config.GetMediaRemoteMaxSize()
+			maxsz := int64(config.GetMediaRemoteMaxSize()) // #nosec G115 -- Already validated.
 
 			// Create media with prepared info.
 			return d.mediaManager.CreateMedia(
 				ctx,
 				accountID,
 				func(ctx context.Context) (io.ReadCloser, error) {
-					return tsport.DereferenceMedia(ctx, url, int64(maxsz))
+					return tsport.DereferenceMedia(ctx, url, maxsz)
 				},
 				info,
 			)
@@ -168,14 +168,14 @@ func (d *Dereferencer) RefreshMedia(
 			}
 
 			// Get maximum supported remote media size.
-			maxsz := config.GetMediaRemoteMaxSize()
+			maxsz := int64(config.GetMediaRemoteMaxSize()) // #nosec G115 -- Already validated.
 
 			// Recache media with prepared info,
 			// this will also update media in db.
 			return d.mediaManager.CacheMedia(
 				attach,
 				func(ctx context.Context) (io.ReadCloser, error) {
-					return tsport.DereferenceMedia(ctx, url, int64(maxsz))
+					return tsport.DereferenceMedia(ctx, url, maxsz)
 				},
 			), nil
 		},

internal/httpclient/client.go

@@ -340,14 +340,14 @@ func (c *Client) do(r *Request) (rsp *http.Response, retry bool, err error) {
 
 			if u, _ := strconv.ParseUint(after, 10, 32); u != 0 {
 				// An integer no. of backoff seconds was provided.
-				r.backoff = time.Duration(u) * time.Second
+				r.backoff = time.Duration(u) * time.Second // #nosec G115 -- We clamp backoff below.
 			} else if at, _ := http.ParseTime(after); !at.Before(now) {
 				// An HTTP formatted future date-time was provided.
 				r.backoff = at.Sub(now)
 			}
 
 			// Don't let their provided backoff exceed our max.
-			if max := baseBackoff * time.Duration(c.retries); //
+			if max := baseBackoff * time.Duration(c.retries); // #nosec G115 -- We control c.retries.
 			r.backoff > max {
 				r.backoff = max
 			}

internal/media/ffmpeg.go

@@ -556,10 +556,10 @@ func (res *ffprobeResult) Process() (*result, error) {
 				if p := strings.SplitN(str, "/", 2); len(p) == 2 {
 					n, _ := strconv.ParseUint(p[0], 10, 32)
 					d, _ := strconv.ParseUint(p[1], 10, 32)
-					num, den = uint32(n), uint32(d)
+					num, den = uint32(n), uint32(d) // #nosec G115 -- ParseUint is configured to check
 				} else {
 					n, _ := strconv.ParseUint(p[0], 10, 32)
-					num = uint32(n)
+					num = uint32(n) // #nosec G115 -- ParseUint is configured to check
 				}
 
 				// Set final divised framerate.

internal/media/imaging.go

@@ -399,9 +399,9 @@ func (s *scanner) scan(x1, y1, x2, y2 int, dst []uint8) {
 					g16 := uint16(s[1])
 					b16 := uint16(s[2])
 					a16 := uint16(a)
-					d[0] = uint8(r16 * 0xff / a16)
-					d[1] = uint8(g16 * 0xff / a16)
-					d[2] = uint8(b16 * 0xff / a16)
+					d[0] = uint8(r16 * 0xff / a16) // #nosec G115 -- Overflow desired.
+					d[1] = uint8(g16 * 0xff / a16) // #nosec G115 -- Overflow desired.
+					d[2] = uint8(b16 * 0xff / a16) // #nosec G115 -- Overflow desired.
 					d[3] = a
 				}
 				j += 4
@@ -431,9 +431,9 @@ func (s *scanner) scan(x1, y1, x2, y2 int, dst []uint8) {
 					g32 := uint32(s[2])<<8 | uint32(s[3])
 					b32 := uint32(s[4])<<8 | uint32(s[5])
 					a32 := uint32(s[6])<<8 | uint32(s[7])
-					d[0] = uint8((r32 * 0xffff / a32) >> 8)
-					d[1] = uint8((g32 * 0xffff / a32) >> 8)
-					d[2] = uint8((b32 * 0xffff / a32) >> 8)
+					d[0] = uint8((r32 * 0xffff / a32) >> 8) // #nosec G115 -- Overflow desired.
+					d[1] = uint8((g32 * 0xffff / a32) >> 8) // #nosec G115 -- Overflow desired.
+					d[2] = uint8((b32 * 0xffff / a32) >> 8) // #nosec G115 -- Overflow desired.
 				}
 				d[3] = a
 				j += 4
@@ -509,30 +509,30 @@ func (s *scanner) scan(x1, y1, x2, y2 int, dst []uint8) {
 				cr1 := int32(img.Cr[ic]) - 128
 
 				r := yy1 + 91881*cr1
-				if uint32(r)&0xff000000 == 0 {
+				if uint32(r)&0xff000000 == 0 { //nolint:gosec
 					r >>= 16
 				} else {
 					r = ^(r >> 31)
 				}
 
 				g := yy1 - 22554*cb1 - 46802*cr1
-				if uint32(g)&0xff000000 == 0 {
+				if uint32(g)&0xff000000 == 0 { //nolint:gosec
 					g >>= 16
 				} else {
 					g = ^(g >> 31)
 				}
 
 				b := yy1 + 116130*cb1
-				if uint32(b)&0xff000000 == 0 {
+				if uint32(b)&0xff000000 == 0 { //nolint:gosec
 					b >>= 16
 				} else {
 					b = ^(b >> 31)
 				}
 
 				d := dst[j : j+4 : j+4]
-				d[0] = uint8(r)
-				d[1] = uint8(g)
-				d[2] = uint8(b)
+				d[0] = uint8(r) // #nosec G115 -- Overflow desired.
+				d[1] = uint8(g) // #nosec G115 -- Overflow desired.
+				d[2] = uint8(b) // #nosec G115 -- Overflow desired.
 				d[3] = 0xff
 
 				iy++
@@ -569,20 +569,20 @@ func (s *scanner) scan(x1, y1, x2, y2 int, dst []uint8) {
 				d := dst[j : j+4 : j+4]
 				switch a16 {
 				case 0xffff:
-					d[0] = uint8(r16 >> 8)
-					d[1] = uint8(g16 >> 8)
-					d[2] = uint8(b16 >> 8)
+					d[0] = uint8(r16 >> 8) // #nosec G115 -- Overflow desired.
+					d[1] = uint8(g16 >> 8) // #nosec G115 -- Overflow desired.
+					d[2] = uint8(b16 >> 8) // #nosec G115 -- Overflow desired.
 					d[3] = 0xff
 				case 0:
 					d[0] = 0
 					d[1] = 0
 					d[2] = 0
 					d[3] = 0
 				default:
-					d[0] = uint8(((r16 * 0xffff) / a16) >> 8)
-					d[1] = uint8(((g16 * 0xffff) / a16) >> 8)
-					d[2] = uint8(((b16 * 0xffff) / a16) >> 8)
-					d[3] = uint8(a16 >> 8)
+					d[0] = uint8(((r16 * 0xffff) / a16) >> 8) // #nosec G115 -- Overflow desired.
+					d[1] = uint8(((g16 * 0xffff) / a16) >> 8) // #nosec G115 -- Overflow desired.
+					d[2] = uint8(((b16 * 0xffff) / a16) >> 8) // #nosec G115 -- Overflow desired.
+					d[3] = uint8(a16 >> 8)                    // #nosec G115 -- Overflow desired.
 				}
 				j += 4
 			}
@@ -617,7 +617,7 @@ func clampFloat(x float64) uint8 {
 		return 255
 	}
 	if v > 0 {
-		return uint8(v)
+		return uint8(v) // #nosec G115 -- Just checked.
 	}
 	return 0
 }

internal/media/refetch.go

@@ -49,9 +49,6 @@ func (m *Manager) RefetchEmojis(ctx context.Context, domain string, dereferenceM
 		refetchIDs         []string
 	)
 
-	// Get max supported remote emoji media size.
-	maxsz := config.GetMediaEmojiRemoteMaxSize()
-
 	// page through emojis 20 at a time, looking for those with missing images
 	for {
 		// Fetch next block of emojis from database
@@ -111,8 +108,10 @@ func (m *Manager) RefetchEmojis(ctx context.Context, domain string, dereferenceM
 			continue
 		}
 
+		// Get max supported remote emoji media size.
+		maxsz := int64(config.GetMediaEmojiRemoteMaxSize()) // #nosec G115 -- Already validated.
 		dataFunc := func(ctx context.Context) (reader io.ReadCloser, err error) {
-			return dereferenceMedia(ctx, emojiImageIRI, int64(maxsz))
+			return dereferenceMedia(ctx, emojiImageIRI, maxsz)
 		}
 
 		processingEmoji, err := m.UpdateEmoji(ctx, emoji, dataFunc, AdditionalEmojiInfo{

internal/media/util.go

@@ -145,7 +145,7 @@ func drainToTmp(rc io.ReadCloser) (string, error) {
 	// Check to see if limit was reached,
 	// (produces more useful error messages).
 	if lr != nil && lr.N <= 0 {
-		err := fmt.Errorf("reached read limit %s", bytesize.Size(limit))
+		err := fmt.Errorf("reached read limit %s", bytesize.Size(limit)) // #nosec G115 -- Just logging
 		return path, gtserror.SetLimitReached(err)
 	}
 

internal/middleware/logger.go

@@ -123,7 +123,7 @@ func Logger(logClientIP bool) gin.HandlerFunc {
 			}
 
 			// Generate a nicer looking bytecount
-			size := bytesize.Size(c.Writer.Size())
+			size := bytesize.Size(c.Writer.Size()) // #nosec G115 -- Just logging
 
 			// Finally, write log entry with status text + body size.
 			l.Logf(lvl, "%s: wrote %s", statusText, size)

internal/middleware/requestid.go

@@ -48,7 +48,7 @@ func NewRequestID() string {
 	b := make([]byte, 12)
 
 	// Get current time in milliseconds.
-	ms := uint64(time.Now().UnixMilli())
+	ms := uint64(time.Now().UnixMilli()) // #nosec G115 -- Pre-1970 clock?
 
 	// Store binary time data in byte buffer.
 	binary.LittleEndian.PutUint64(b[0:8], ms)

internal/middleware/throttling.go

@@ -82,12 +82,16 @@ func Throttle(cpuMultiplier int, retryAfter time.Duration) gin.HandlerFunc {
 		return func(c *gin.Context) {}
 	}
 
+	if retryAfter < 0 {
+		retryAfter = 0
+	}
+
 	var (
 		limit         = runtime.GOMAXPROCS(0) * cpuMultiplier
 		queueLimit    = limit * cpuMultiplier
 		tokens        = make(chan token, limit)
 		requestCount  = atomic.Int64{}
-		retryAfterStr = strconv.FormatUint(uint64(retryAfter/time.Second), 10)
+		retryAfterStr = strconv.FormatUint(uint64(retryAfter/time.Second), 10) // #nosec G115 -- Checked right above
 	)
 
 	// prefill token channel

internal/processing/account/update.go

@@ -463,9 +463,10 @@ func (p *Processor) UpdateAvatar(
 ) {
 	// Get maximum supported local media size.
 	maxsz := config.GetMediaLocalMaxSize()
+	maxszInt64 := int64(maxsz) // #nosec G115 -- Already validated.
 
 	// Ensure media within size bounds.
-	if avatar.Size > int64(maxsz) {
+	if avatar.Size > maxszInt64 {
 		text := fmt.Sprintf("media exceeds configured max size: %s", maxsz)
 		return nil, gtserror.NewErrorBadRequest(errors.New(text), text)
 	}
@@ -478,7 +479,7 @@ func (p *Processor) UpdateAvatar(
 	}
 
 	// Wrap the multipart file reader to ensure is limited to max.
-	rc, _, _ := iotools.UpdateReadCloserLimit(mpfile, int64(maxsz))
+	rc, _, _ := iotools.UpdateReadCloserLimit(mpfile, maxszInt64)
 
 	// Write to instance storage.
 	return p.c.StoreLocalMedia(ctx,
@@ -508,9 +509,10 @@ func (p *Processor) UpdateHeader(
 ) {
 	// Get maximum supported local media size.
 	maxsz := config.GetMediaLocalMaxSize()
+	maxszInt64 := int64(maxsz) // #nosec G115 -- Already validated.
 
 	// Ensure media within size bounds.
-	if header.Size > int64(maxsz) {
+	if header.Size > maxszInt64 {
 		text := fmt.Sprintf("media exceeds configured max size: %s", maxsz)
 		return nil, gtserror.NewErrorBadRequest(errors.New(text), text)
 	}
@@ -523,7 +525,7 @@ func (p *Processor) UpdateHeader(
 	}
 
 	// Wrap the multipart file reader to ensure is limited to max.
-	rc, _, _ := iotools.UpdateReadCloserLimit(mpfile, int64(maxsz))
+	rc, _, _ := iotools.UpdateReadCloserLimit(mpfile, maxszInt64)
 
 	// Write to instance storage.
 	return p.c.StoreLocalMedia(ctx,