[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 <tobi.smethurst@protonmail.com>

4 files changed, 26 insertions, 27 deletions

diff --git a/internal/media/ffmpeg.go b/internal/media/ffmpeg.go
index 4baa3dbe5..f1c277934 100644
--- a/internal/media/ffmpeg.go
+++ b/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.
diff --git a/internal/media/imaging.go b/internal/media/imaging.go
index a9f73a066..6a0fa694c 100644
--- a/internal/media/imaging.go
+++ b/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++
@@ -569,9 +569,9 @@ 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
@@ -579,10 +579,10 @@ func (s *scanner) scan(x1, y1, x2, y2 int, dst []uint8) {
 					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
 }
diff --git a/internal/media/refetch.go b/internal/media/refetch.go
index 5531f6d97..c467333c9 100644
--- a/internal/media/refetch.go
+++ b/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{
diff --git a/internal/media/util.go b/internal/media/util.go
index 538d6f572..f6bf06260 100644
--- a/internal/media/util.go
+++ b/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)
 	}