From 8efc43b0e44218a823cd4153ad7f32050ae63ae8 Mon Sep 17 00:00:00 2001
From: Pim van Pelt <pim@ipng.ch>
Date: Sun, 5 Apr 2026 22:54:29 +0200
Subject: [PATCH] Clean up stderr logging

---
 cmd/ctfetch/main.go     | 27 ++-------------------------
 internal/utils/utils.go |  9 ++++-----
 2 files changed, 6 insertions(+), 30 deletions(-)

diff --git a/cmd/ctfetch/main.go b/cmd/ctfetch/main.go
index f5f0aba..e811a10 100644
--- a/cmd/ctfetch/main.go
+++ b/cmd/ctfetch/main.go
@@ -102,37 +102,18 @@ func runLeafIndex(logURL, indexStr string, opts utils.Options) {
 	tile.L = -1
 
 	partialPath := sunlight.TilePath(tile)
-	fullTile := tile
-	fullTile.W = sunlight.TileWidth
-	fullPath := sunlight.TilePath(fullTile)
 
 	positionInTile := leafIndex % sunlight.TileWidth
 
-	fmt.Fprintf(os.Stderr, "Leaf Index: %d\n", leafIndex)
-	fmt.Fprintf(os.Stderr, "Position in tile: %d\n", positionInTile)
-	fmt.Fprintf(os.Stderr, "Partial tile path: %s\n", partialPath)
-	fmt.Fprintf(os.Stderr, "Full tile path: %s\n", fullPath)
-
-	partialURL := logURL + "/" + partialPath
-	fmt.Fprintf(os.Stderr, "Trying: %s\n", partialURL)
-	tileData, err := utils.FetchTile(partialURL)
+	tileData, err := utils.FetchTile(logURL + "/" + partialPath)
 	if err != nil {
-		fullURL := logURL + "/" + fullPath
-		fmt.Fprintf(os.Stderr, "Partial tile failed, trying: %s\n", fullURL)
-		tileData, err = utils.FetchURL(fullURL)
-		if err != nil {
-			fatal("failed to fetch tile: %v", err)
-		}
-		fmt.Fprintf(os.Stderr, "Successfully fetched full tile\n")
-	} else {
-		fmt.Fprintf(os.Stderr, "Successfully fetched partial tile\n")
+		fatal("failed to fetch tile: %v", err)
 	}
 
 	tileData, err = utils.Decompress(tileData)
 	if err != nil {
 		fatal("failed to decompress tile: %v", err)
 	}
-	fmt.Fprintf(os.Stderr, "Tile size: %d bytes\n\n", len(tileData))
 
 	entry, err := utils.DumpEntryAtPosition(tileData, int(positionInTile), leafIndex, opts)
 	if err != nil {
@@ -156,12 +137,10 @@ func runTileDump(arg, monitoringURL string, opts utils.Options) {
 				fatal("+issuer requires a log root URL; none could be derived from %q and --monitoring-url is not set", arg)
 			}
 		}
-		fmt.Fprintf(os.Stderr, "Fetching: %s\n", arg)
 		tileData, err = utils.FetchTile(arg)
 		if err != nil {
 			fatal("failed to fetch tile: %v", err)
 		}
-		fmt.Fprintf(os.Stderr, "Fetched %d bytes\n", len(tileData))
 	} else {
 		// File input.
 		if opts.ShowIssuer {
@@ -175,14 +154,12 @@ func runTileDump(arg, monitoringURL string, opts utils.Options) {
 		if err != nil {
 			fatal("failed to read file: %v", err)
 		}
-		fmt.Fprintf(os.Stderr, "Read %d bytes from %s\n", len(tileData), arg)
 	}
 
 	tileData, err = utils.Decompress(tileData)
 	if err != nil {
 		fatal("failed to decompress tile: %v", err)
 	}
-	fmt.Fprintf(os.Stderr, "Tile size: %d bytes\n\n", len(tileData))
 
 	result, err := utils.DumpAllEntries(tileData, opts)
 	if err != nil {
diff --git a/internal/utils/utils.go b/internal/utils/utils.go
index b56398f..6c8eab6 100644
--- a/internal/utils/utils.go
+++ b/internal/utils/utils.go
@@ -32,8 +32,8 @@ var (
 )
 
 var (
-	oidSCTList     = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 11129, 2, 4, 2}
-	oidCTPoison    = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 11129, 2, 4, 3}
+	oidSCTList  = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 11129, 2, 4, 2}
+	oidCTPoison = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 11129, 2, 4, 3}
 )
 
 // CTLogInfo holds details about a CT log from the log list.
@@ -162,6 +162,7 @@ type DumpResult struct {
 
 // FetchURL fetches data from a URL.
 func FetchURL(url string) ([]byte, error) {
+	fmt.Fprintf(os.Stderr, "Fetching: %s\n", url)
 	resp, err := http.Get(url)
 	if err != nil {
 		return nil, err
@@ -184,9 +185,7 @@ func FetchTile(url string) ([]byte, error) {
 	// On 404, try stripping the partial-tile suffix (.p/NNN)
 	if err.Error() == "HTTP 404" {
 		if idx := strings.Index(url, ".p/"); idx != -1 {
-			fullURL := url[:idx]
-			fmt.Fprintf(os.Stderr, "Partial tile not found, trying full tile: %s\n", fullURL)
-			return FetchURL(fullURL)
+			return FetchURL(url[:idx])
 		}
 	}
 	return nil, err