feat(server): use custom temporary directory within trilium-data

src/routes/api/files.ts

@@ -14,6 +14,7 @@ import ValidationError from "../../errors/validation_error.js";
 import type { Request, Response } from "express";
 import type BNote from "../../becca/entities/bnote.js";
 import type BAttachment from "../../becca/entities/battachment.js";
+import dataDirs from "../../services/data_dir.js";
 
 function updateFile(req: Request) {
     const note = becca.getNoteOrThrow(req.params.noteId);
@@ -167,7 +168,10 @@ function saveAttachmentToTmpDir(req: Request) {
 const createdTemporaryFiles = new Set<string>();
 
 function saveToTmpDir(fileName: string, content: string | Buffer, entityType: string, entityId: string) {
-    const tmpObj = tmp.fileSync({ postfix: fileName });
+    const tmpObj = tmp.fileSync({
+        postfix: fileName,
+        tmpdir: dataDirs.TMP_DIR
+    });
 
     if (typeof content === "string") {
         fs.writeSync(tmpObj.fd, content);

src/services/data_dir.ts

@@ -47,10 +47,13 @@ export function getDataDirs(TRILIUM_DATA_DIR: string) {
         DOCUMENT_PATH: process.env.TRILIUM_DOCUMENT_PATH || pathJoin(TRILIUM_DATA_DIR, "document.db"),
         BACKUP_DIR: process.env.TRILIUM_BACKUP_DIR || pathJoin(TRILIUM_DATA_DIR, "backup"),
         LOG_DIR: process.env.TRILIUM_LOG_DIR || pathJoin(TRILIUM_DATA_DIR, "log"),
+        TMP_DIR: process.env.TRILIUM_TMP_DIR || pathJoin(TRILIUM_DATA_DIR, "tmp"),
         ANONYMIZED_DB_DIR: process.env.TRILIUM_ANONYMIZED_DB_DIR || pathJoin(TRILIUM_DATA_DIR, "anonymized-db"),
         CONFIG_INI_PATH: process.env.TRILIUM_CONFIG_INI_PATH || pathJoin(TRILIUM_DATA_DIR, "config.ini")
     } as const;
 
+    createDirIfNotExisting(dataDirs.TMP_DIR);
+
     Object.freeze(dataDirs);
     return dataDirs;
 }