Fixing issue #35530: Password Leak in Log Messages (#35584)

The Gitea codebase was logging `Elasticsearch` and `Meilisearch`
connection strings directly to log files without sanitizing them. Since
connection strings often contain credentials in the format
`protocol://username:password@host:port`, this resulted in passwords
being exposed in plain text in log output.

Fix:
- wrapped all instances of setting.Indexer.RepoConnStr and
setting.Indexer.IssueConnStr with the `util.SanitizeCredentialURLs()`
function before logging them.

Fixes: #35530

Co-authored-by: Lunny Xiao <[email protected]>

Author: shashank-netapp

modules/indexer/code/indexer.go

@@ -22,6 +22,7 @@ import (
 	"code.gitea.io/gitea/modules/process"
 	"code.gitea.io/gitea/modules/queue"
 	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/util"
 )
 
 var (
@@ -166,12 +167,12 @@ func Init() {
 				log.Fatal("PID: %d Unable to initialize the bleve Repository Indexer at path: %s Error: %v", os.Getpid(), setting.Indexer.RepoPath, err)
 			}
 		case "elasticsearch":
-			log.Info("PID: %d Initializing Repository Indexer at: %s", os.Getpid(), setting.Indexer.RepoConnStr)
+			log.Info("PID: %d Initializing Repository Indexer at: %s", os.Getpid(), util.SanitizeCredentialURLs(setting.Indexer.RepoConnStr))
 			defer func() {
 				if err := recover(); err != nil {
 					log.Error("PANIC whilst initializing repository indexer: %v\nStacktrace: %s", err, log.Stack(2))
 					log.Error("The indexer files are likely corrupted and may need to be deleted")
-					log.Error("You can completely remove the \"%s\" index to make Gitea recreate the indexes", setting.Indexer.RepoConnStr)
+					log.Error("You can completely remove the \"%s\" index to make Gitea recreate the indexes", util.SanitizeCredentialURLs(setting.Indexer.RepoConnStr))
 				}
 			}()
 
@@ -181,7 +182,7 @@ func Init() {
 				cancel()
 				(*globalIndexer.Load()).Close()
 				close(waitChannel)
-				log.Fatal("PID: %d Unable to initialize the elasticsearch Repository Indexer connstr: %s Error: %v", os.Getpid(), setting.Indexer.RepoConnStr, err)
+				log.Fatal("PID: %d Unable to initialize the elasticsearch Repository Indexer connstr: %s Error: %v", os.Getpid(), util.SanitizeCredentialURLs(setting.Indexer.RepoConnStr), err)
 			}
 
 		default:

modules/indexer/issues/indexer.go

@@ -25,6 +25,7 @@ import (
 	"code.gitea.io/gitea/modules/process"
 	"code.gitea.io/gitea/modules/queue"
 	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/modules/util"
 )
 
 // IndexerMetadata is used to send data to the queue, so it contains only the ids.
@@ -100,15 +101,15 @@ func InitIssueIndexer(syncReindex bool) {
 			issueIndexer = elasticsearch.NewIndexer(setting.Indexer.IssueConnStr, setting.Indexer.IssueIndexerName)
 			existed, err = issueIndexer.Init(ctx)
 			if err != nil {
-				log.Fatal("Unable to issueIndexer.Init with connection %s Error: %v", setting.Indexer.IssueConnStr, err)
+				log.Fatal("Unable to issueIndexer.Init with connection %s Error: %v", util.SanitizeCredentialURLs(setting.Indexer.IssueConnStr), err)
 			}
 		case "db":
 			issueIndexer = db.GetIndexer()
 		case "meilisearch":
 			issueIndexer = meilisearch.NewIndexer(setting.Indexer.IssueConnStr, setting.Indexer.IssueConnAuth, setting.Indexer.IssueIndexerName)
 			existed, err = issueIndexer.Init(ctx)
 			if err != nil {
-				log.Fatal("Unable to issueIndexer.Init with connection %s Error: %v", setting.Indexer.IssueConnStr, err)
+				log.Fatal("Unable to issueIndexer.Init with connection %s Error: %v", util.SanitizeCredentialURLs(setting.Indexer.IssueConnStr), err)
 			}
 		default:
 			log.Fatal("Unknown issue indexer type: %s", setting.Indexer.IssueType)