update README dev commands & other commentary

This reverts commit 1e61c55e5b.

.env.sample

@@ -1,3 +1,4 @@
+# shellcheck disable=SC2034
 
 # These settings work for American Cloud.
 #S3_ACCESS_KEY=???
@@ -19,15 +20,13 @@ S3_SET_ACL=false
 #ENDORSER_API_URL=https://test-api.endorser.ch
 #ENDORSER_API_URL=https://api.endorser.ch
 
-INFURA_PROJECT_ID=???
-
 # host where the final image can be accessed by the public
 # default is https://test-image.timesafari.app
 #DOWNLOAD_IMAGE_SERVER=test-image.timesafari.app
 
-# default is 3000
+# default is 3002
 #PORT=3000
 
-# default is jdbc:sqlite:./sqlite-db.sqlite
+# default is ./image.sqlite
 # file name also referenced in flyway.conf and in code
-#SQLITE_FILE=./image-db.sqlite
+#SQLITE_FILE=./image.sqlite

CHANGELOG.md

@@ -0,0 +1,29 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+### Changed in DB or environment
+- Nothing
+
+
+##[1.2.3] - 2024.07.18 - 947f307305d1ad583c5ec7c61fe178fa45490adf
+### Added
+- Replacement of an existing file
+- Local resolver for did:ethr
+- Validation of did:peer JWANT
+- Testing for file deletion
+### Fixed
+- Incorrect check for others who recorded same image
+### Changed
+- Dockerfile uses a builder image
+### Changed in DB or environment
+- New SQL migration (for the new file deletion feature)
+
+
+## [1.0.0]
+### Added
+- All endpoints: image POST & DELETE, image-limits, ping

Dockerfile

@@ -0,0 +1,19 @@
+# syntax=docker/dockerfile:1
+
+FROM node:22-alpine AS builder
+ARG IMAGE_API_VERSION
+RUN npm install -g pnpm
+RUN apk add git
+RUN git clone https://gitea.anomalistdesign.com/log-trade/image-api.git
+WORKDIR image-api
+RUN git checkout $IMAGE_API_VERSION
+# dev dependencies like TypeScript are needed to build, so run it and then run the prod install later
+RUN pnpm install
+RUN pnpm build
+RUN pnpm install --prod
+
+FROM node:22-alpine
+COPY --from=builder /image-api/dist /image-api/dist
+COPY --from=builder /image-api/node_modules /image-api/node_modules
+WORKDIR image-api
+CMD node dist/server.js

Makefile.test

@@ -0,0 +1,103 @@
+# from https://github.com/box/Makefile.test
+# `make -C test -j`
+
+# Makefile that has a convenient check target.
+# It can be included from another Makefile that only has a TESTS variable
+# defined like this
+#
+# TESTS ?=
+#
+# Runs the specified test executables. Prepends the test's name to each test's output
+# and gives a nice summary at the end of test execution about passed failed
+# tests.
+
+# Only bash is supported
+SHELL := /bin/bash
+
+THIS_FILE := $(realpath $(lastword $(MAKEFILE_LIST)))
+# The directory where Makefile.test (this file) resides
+THIS_FILE_DIR := $(shell dirname $(THIS_FILE))
+
+# FIRST_MAKEFILE may be passed from parent make to child make. If it is not
+# absent, do not overwrite it.
+FIRST_MAKEFILE ?= $(realpath $(firstword $(MAKEFILE_LIST)))
+export FIRST_MAKEFILE
+
+# The directory where the Makefile, that is invoked from the command line,
+# resides. That makefile would define the TESTS variable. We assume that the
+# binaries defined in the TESTS variable also reside in the directory as
+# the Makefile. The generated intermediate files will also go to this directory.
+FIRST_MAKEFILE_DIR ?= $(shell dirname $(FIRST_MAKEFILE))
+export FIRST_MAKEFILE_DIR
+
+# So that the child makefiles can see the same TESTS variable.
+export TESTS
+
+failedTestsName := .makefile_test_failed_tests
+executedTestsName := .makefile_test_executed_tests
+TEST_TARGETS := $(TESTS:%=TARGET_FOR_%)
+export TEST_TARGETS
+
+# If the tests need a different environment one can append to this variable.
+TEST_ENVIRONMENT = PYTHONPATH=$(THIS_FILE_DIR):$$PYTHONPATH PATH=$(THIS_FILE_DIR):$$PATH
+
+# TODO: Only write to intermediate files, if they exist already.
+# https://unix.stackexchange.com/q/405497/212862
+# There is still a race condition here. Maybe we should use sed for appending.
+define RUN_ONE_TEST
+TARGET_FOR_$(1): $$(FIRST_MAKEFILE_DIR)/$(1)
+	+@export PATH=$$$$(pwd):$$$$PATH; \
+          if [ -e $$(FIRST_MAKEFILE_DIR)/$$(executedTestsName) ]; then \
+             echo $$< >> $$(FIRST_MAKEFILE_DIR)/$$(executedTestsName); \
+          fi; \
+          $$(TEST_ENVIRONMENT) $$< 2>&1 | sed "s/^/  [$$$$(basename $$<)] /"; test $$$${PIPESTATUS[0]} -eq 0; \
+          if [ $$$$? -eq 0 ]; then \
+             echo " PASSED: $$$$(basename $$<)"; \
+          else \
+             echo " FAILED: $$$$(basename $$<)"; \
+             if [ -e $$(FIRST_MAKEFILE_DIR)/$$(failedTestsName) ]; then \
+                echo $$< >> $$(FIRST_MAKEFILE_DIR)/$$(failedTestsName); \
+             fi; \
+          fi;
+endef
+
+# Build the above rule to run one test, for all tests.
+$(foreach currtest,$(TESTS),$(eval $(call RUN_ONE_TEST,$(currtest))))
+
+# execute the tests and look at the generated temp files afterwards.
+actualCheck: $(TEST_TARGETS)
+	+@failed_tests=$$(cat $(FIRST_MAKEFILE_DIR)/$(failedTestsName) 2> /dev/null | wc -l;); \
+          executed_tests=$$(cat $(FIRST_MAKEFILE_DIR)/$(executedTestsName) 2> /dev/null | wc -l;); \
+          if [ $$failed_tests -ne 0 -a $$executed_tests -ne 0 ]; then \
+             echo ---------------------------------; \
+             echo "Failed $$failed_tests out of $$executed_tests tests"; \
+             echo ---------------------------------; \
+          elif [ $$failed_tests -eq 0 ]; then  \
+             echo ---------------------------------; \
+             echo "All $$executed_tests tests passed"; \
+             echo ---------------------------------; \
+          fi; \
+          exit $$failed_tests;
+
+# A commonly used bash command to clean intermediate files. Instead of writing
+# it every time re-use this variable.
+RM_INTERMEDIATE_FILES := rm -f $(FIRST_MAKEFILE_DIR)/$(failedTestsName) $(FIRST_MAKEFILE_DIR)/$(executedTestsName)
+
+# At the start of the make, we want to start with empty intermediate files.
+TRUNCATE_INTERMEDIATE_FILES := cat /dev/null > $(FIRST_MAKEFILE_DIR)/$(failedTestsName) && cat /dev/null > $(FIRST_MAKEFILE_DIR)/$(executedTestsName)
+
+# With trap make sure the clean step is always executed before and after the
+# tests run time. Do not leave residual files in the repo.
+check:
+	+@trap "code=\$$?; \
+           $(RM_INTERMEDIATE_FILES); \
+           exit \$${code};" EXIT; \
+          $(TRUNCATE_INTERMEDIATE_FILES); \
+          $(MAKE) -f $(THIS_FILE) actualCheck;
+
+all: check
+
+.PHONY: all check preCheck actualCheck $(TEST_TARGETS)
+.DEFAULT_GOAL := all
+
+

README.md

@@ -1,8 +1,5 @@
 # Image Server
 
-Remaining:
-- dockerize
-
 ## setup
 
 ```
@@ -13,39 +10,56 @@ mkdir uploads
 pnpm run migrate
 ```
 
-Now set up an S3 bucket & Infura project, and create a .env file from .env.sample with these important settings:
+Now set up an S3 bucket, and create a .env file from .env.sample with these important settings:
 ```
 AWS_ACCESS_KEY=
 AWS_SECRET_KEY=
 AWS_REGION=
-
-INFURA_PROJECT_ID=
 ```
 
 ## dev
 
 ```
-node server.js
+npm run build
+npm start
 ```
 
 ## test
 
+#### automated
+
+```shell
+make -C test -j
+```
+
+#### manual
+
 ```shell
 # run this first command in a directory where `npm install did-jwt` has been run
 CODE='OWNER_DID="did:ethr:0x0000694B58C2cC69658993A90D3840C560f2F51F"; OWNER_PRIVATE_KEY_HEX="2b6472c026ec2aa2c4235c994a63868fc9212d18b58f6cbfe861b52e71330f5b"; didJwt = require("did-jwt"); didJwt.createJWT({ exp: Math.floor(Date.now() / 1000) + 60, iat: Math.floor(Date.now() / 1000), iss: OWNER_DID }, { issuer: OWNER_DID, signer: didJwt.SimpleSigner(OWNER_PRIVATE_KEY_HEX) }).then(console.log)'
+JWT=`node -e "$CODE"`; curl -X GET -H "Authorization: Bearer $JWT" http://localhost:3001/image-limits
 JWT=`node -e "$CODE"`; curl -X POST -H "Authorization: Bearer $JWT" -F "image=@./test.png" http://localhost:3001/image
 JWT=`node -e "$CODE"`; curl -X DELETE -H "Authorization: Bearer $JWT" http://localhost:3001/image/https%3A%2F%2Fgifts-image-test.s3.amazonaws.com%2F4599145c3a8792a678f458747f2d8512c680e8680bf5563c35b06cd770051ed2.png
 ```
 
 ## deploy to prod first time
 
-* Do the necessary steps from "setup" above.
+* Do the necessary steps from "setup" above, or `docker build` it.
+
+* In object storage, set up bucket (and erase any test data).
 
-* In object storage, set up bucket and erase any test data.
+* Create a cert for the image delivery & image API servers.
 
 * In haproxy, set a permanent web forward to the correct storage location.
 
+  * eg. `http-request redirect code 301 location https://a2-west.americancloud.com/images6618:giftsimagetest%[capture.req.uri] if { hdr_dom(host) -i test-image.timesafari.app }`
 
 ## deploy to prod subsequent times
 
-* Add CHANGELOG.md entry. Update version in server.js file.
+* Update version in package.json, server.js 'ping' endpoint, and CHANGELOG.md entry.
+
+* Commit, push, and tag.
+
+* Build the docker image.
+
+* Bump version and add "-beta" in package.json & server.js 'ping' endpoint.

package.json

@@ -1,25 +1,34 @@
 {
   "name": "Images for Trade",
-  "version": "0.0.1",
+  "version": "1.2.4-beta",
   "description": "",
   "license": "UNLICENSED",
   "dependencies": {
-    "@aws-sdk/client-s3": "^3.521.0",
-    "@aws-sdk/lib-storage": "^3.521.0",
+    "@aws-sdk/client-s3": "^3.614.0",
+    "@aws-sdk/lib-storage": "^3.614.0",
+    "@peculiar/asn1-ecc": "^2.3.8",
+    "@peculiar/asn1-schema": "^2.3.8",
+    "base64url": "^3.0.1",
+    "cbor-x": "^1.5.9",
     "cors": "^2.8.5",
-    "did-jwt": "^8.0.1",
+    "did-jwt": "^7.4.7",
     "did-resolver": "^4.1.0",
     "dotenv": "^16.4.5",
-    "ethr-did-resolver": "^10.1.5",
-    "express": "^4.18.2",
+    "express": "^4.19.2",
     "luxon": "^3.4.4",
     "multer": "1.4.5-lts.1",
     "sqlite3": "^5.1.7"
   },
   "devDependencies": {
-    "flywaydb-cli": "^0.9.0"
+    "flywaydb-cli": "^0.9.0",
+    "nodemon": "^3.1.4",
+    "ts-node": "^10.9.2",
+    "typescript": "^5.5.3"
   },
   "scripts": {
-    "migrate": "flyway -configFiles=sql/flyway.conf migrate"
+    "build": "tsc",
+    "migrate": "flyway -configFiles=sql/flyway.conf migrate",
+    "start": "node dist/server.js",
+    "start:dev": "nodemon --exec ts-node src/server.ts"
   }
 }

sql/migrations/V2__add_is_replacement.sql

@@ -0,0 +1,2 @@
+
+ALTER TABLE image ADD COLUMN is_replacement BOOLEAN NOT NULL DEFAULT FALSE;

server.js → src/server.ts

@@ -1,35 +1,30 @@
+//@ts-nocheck
+
 const { DeleteObjectCommand, PutObjectCommand, S3Client } = require('@aws-sdk/client-s3');
 const cors = require('cors');
 const crypto = require('crypto');
 const didJwt = require('did-jwt');
 const { Resolver } = require('did-resolver');
 const express = require('express');
-const { getResolver } = require('ethr-did-resolver');
 const fs = require('fs');
 const { DateTime } = require('luxon');
 const multer = require('multer');
 const path = require('path');
 const sqlite3 = require('sqlite3').verbose();
 
+import { decodeAndVerifyJwt } from "./vc";
+
 require('dotenv').config()
 
 const app = express();
 app.use(cors());
 
-const port = process.env.PORT || 3001;
+const port = process.env.PORT || 3002;
 // file name also referenced in flyway.conf and potentially in .env files or in environment variables
 const dbFile = process.env.SQLITE_FILE || './image-db.sqlite';
 const bucketName = process.env.S3_BUCKET_NAME || 'gifts-image-test';
 const imageServer = process.env.DOWNLOAD_IMAGE_SERVER || 'test-image.timesafari.app';
 
-const ethrDidResolver = getResolver;
-const resolver =
-  new Resolver({
-    ...ethrDidResolver({
-      infuraProjectId: process.env.INFURA_PROJECT_ID || 'fake-infura-project-id'
-    })
-  })
-
 // Open a connection to the SQLite database
 const db = new sqlite3.Database(dbFile, (err) => {
   if (err) {
@@ -54,39 +49,52 @@ const uploadDir = 'uploads';
 const uploadMulter = multer({ dest: uploadDir + '/' });
 
 app.get('/ping', async (req, res) => {
-    res.send('pong v1.0.0');
+  res.send('pong - v 1.2.3-beta'); // version
 });
 
 app.get('/image-limits', async (req, res) => {
-  limitsResult = await retrievelimits(req, res);
-  if (!limitsResult.success) {
-    return limitsResult.result;
+  try {
+    const limitsResult = await retrievelimits(req, res);
+    if (!limitsResult.success) {
+      return limitsResult.result;
+    }
+    return res.status(200).send({
+      success: true,
+      doneImagesThisWeek: limitsResult.doneImagesThisWeek,
+      maxImagesPerWeek: limitsResult.maxImagesPerWeek,
+      nextWeekBeginDateTime: limitsResult.nextWeekBeginDateTime
+    });
+  } catch (e) {
+    console.error('Error getting image limits:', e, ' ... with this string: ' + JSON.stringify(e));
+    return res.status(500).send({ success: false, message: 'Got this error retrieving limits: ' + JSON.stringify(e) });
   }
-  return res.status(200).send(JSON.stringify({
-    success: true,
-    doneImagesThisWeek: limitsResult.doneImagesThisWeek,
-    maxImagesPerWeek: limitsResult.maxImagesPerWeek,
-    nextWeekBeginDateTime: limitsResult.nextWeekBeginDateTime
-  }));
 });
 
-// POST endpoint to upload an image
+/**
+ * POST endpoint to upload an image
+ *
+ * Send as FormData, with:
+ * - "image" file Blob
+ * - "claimType" (optional, eg. "GiveAction", "PlanAction", "profile")
+ * - "handleId" (optional)
+ * - "fileName" (optional, if you want to replace a previous image)
+ */
 app.post('/image', uploadMulter.single('image'), async (req, res) => {
   const reqFile = req.file;
   if (reqFile == null) {
-    return res.status(400).send(JSON.stringify({ success: false, message: 'No file uploaded.' }));
-  }
-  if (reqFile.size > 10000000) {
-    fs.rm(reqFile.path, (err) => {
-      if (err) {
-        console.error("Error deleting too-large temp file", reqFile.path, "with error (but continuing):", err);
-      }
-    });
-    return res.status(400).send(JSON.stringify({success: false, message: 'File size is too large. Maximum file size is 10MB.'}));
+    return res.status(400).send({ success: false, message: 'No file uploaded.' });
   }
-
   try {
-    limitsResult = await retrievelimits(req, res);
+    if (reqFile.size > 10485760) { // 10MB
+      fs.rm(reqFile.path, (err) => {
+        if (err) {
+          console.error("Error deleting too-large temp file", reqFile.path, "with error (but continuing):", err);
+        }
+      });
+      return res.status(400).send({success: false, message: 'File size is too large. Maximum file size is 10MB.'});
+    }
+
+    const limitsResult = await retrievelimits(req, res);
     if (!limitsResult.success) {
       return limitsResult.result;
     }
@@ -95,48 +103,130 @@ app.post('/image', uploadMulter.single('image'), async (req, res) => {
     const issuerDid = limitsResult.issuerDid;
 
     if (doneImagesThisWeek >= maxImagesPerWeek) {
-      return res.status(400).send(JSON.stringify({ success: false, message: 'You have reached your weekly limit of ' + maxImagesPerWeek + ' images.' }));
+      return res.status(400).send({ success: false, message: 'You have reached your weekly limit of ' + maxImagesPerWeek + ' images.' });
     }
 
     // Read the file from the temporary location
     fs.readFile(reqFile.path, async (err, data) => {
       if (err) throw err; // Handle error
 
-      const hashSum = crypto.createHash('sha256');
-      hashSum.update(data);
-      const hashHex = hashSum.digest('hex');
+      try {
+        let finalFileName;
+        if (req.body.fileName) {
+          // replacement file name given
+          finalFileName = req.body.fileName;
+
+          // check if the file to replace was sent by this user earlier
+          const didForOriginal = await new Promise((resolve, reject) => {
+            // For some reason, this prepared-statement SQL gives seg fault: "SELECT did FROM image WHERE did = ? and final_file = ?"
+            if (issuerDid.indexOf("'") >= 0 || finalFileName.indexOf("'") >= 0) {
+              console.error("Error: SQL injection attempt with", issuerDid, finalFileName);
+              return res.status(400).send({ success: false, message: 'SQL injection attempt detected.' });
+            }
+            const sql = "SELECT did FROM image WHERE did = '" + issuerDid + "' and final_file = '" + finalFileName + "'";
+            db.get(
+              sql,
+              [],
+              (dbErr, row) => {
+                if (dbErr) {
+                  console.error(currentDate, 'Error getting image for user from database:', dbErr)
+                  reject(dbErr);
+                }
+                resolve(row?.did);
+              }
+            );
+          });
+          if (!didForOriginal) {
+            return res.status(404).send({ success: false, message: 'No image entry found for user ' + issuerDid + ' for file ' + finalFileName });
+          }
 
-      const fileName = hashHex + path.extname(reqFile.originalname);
+          // check if any other user recorded this image
+          const othersWhoSentImage = await new Promise((resolve, reject) => {
+            db.get(
+              'SELECT did FROM image WHERE final_file = ? and did != ?',
+              [ finalFileName, issuerDid ],
+              (dbErr, row) => {
+                if (dbErr) {
+                  console.error(currentDate, 'Error getting image for other users from database:', dbErr)
+                  reject(dbErr);
+                }
+                resolve(row?.did);
+              }
+            );
+          });
+          if (othersWhoSentImage) {
+            return res.status(400).send({ success: false, message: 'Other users have also saved this image so it cannot be modified. You will have to replace your own references.' });
+          }
 
-      try {
+          // remove from S3
+          const params = {
+            Bucket: bucketName, // S3 Bucket name
+            Key: finalFileName, // File name to use in S3
+          };
+          const command = new DeleteObjectCommand(params);
+          const response = await s3Client.send(command);
+          if (response.$metadata.httpStatusCode !== 200
+            && response.$metadata.httpStatusCode !== 202
+            && response.$metadata.httpStatusCode !== 204) {
+            const errorTime = new Date().toISOString();
+            console.error(errorTime, "Error deleting from S3 with bad HTTP status, with metadata:", response.$metadata);
+            return res.status(500).send({
+              success: false,
+              message: "Got bad status of " + response.$metadata.httpStatusCode + " from S3. See server logs at " + errorTime
+            });
+          }
 
-        // look to see if this image already exists
-        const imageUrl = await new Promise((resolve, reject) => {
-          db.get(
-            'SELECT url FROM image WHERE final_file = ? and did = ?',
-            [ fileName, issuerDid ],
-            (dbErr, row) => {
-              if (dbErr) {
-                console.error(currentDate, 'Error getting image for user from database:', dbErr)
-                // continue anyway
+          // might as well remove from DB and add it all back again later
+          await new Promise((resolve, reject) => {
+            db.run(
+              'DELETE FROM image where did = ? and final_file = ?',
+              [ issuerDid, finalFileName ],
+              (dbErr) => {
+                if (dbErr) {
+                  const currentDate = new Date().toISOString();
+                  console.error(currentDate, "Error deleting record by", issuerDid, "named", finalFileName, "from database:", dbErr);
+                  // don't continue because then we'll have storage we cannot track (and potentially limit)
+                  reject(dbErr);
+                }
+                resolve();
               }
-              resolve(row?.url);
-            }
-          );
-        });
-        if (imageUrl) {
-          return res.status(201).send(JSON.stringify({ success: true, url: imageUrl, message: 'This image already existed.' }));
+            );
+          });
+        } else {
+          // no replacement file name given so it's a new file
+          const hashSum = crypto.createHash('sha256');
+          hashSum.update(data);
+          const hashHex = hashSum.digest('hex');
+          finalFileName = hashHex + path.extname(reqFile.originalname);
+
+          // look to see if this image already exists for this user
+          const imageUrl = await new Promise((resolve, reject) => {
+            db.get(
+              'SELECT url FROM image WHERE final_file = ? and did = ?',
+              [ finalFileName, issuerDid ],
+              (dbErr, row) => {
+                if (dbErr) {
+                  console.error(currentDate, 'Error getting image for user from database:', dbErr)
+                  // continue anyway
+                }
+                resolve(row?.url);
+              }
+            );
+          });
+          if (imageUrl) {
+            return res.status(201).send({ success: true, url: imageUrl, message: 'This image already existed.' });
+          }
         }
 
         // record the upload in the database
         const currentDate = new Date().toISOString();
         const localFile = reqFile.path.startsWith(uploadDir + '/') ? reqFile.path.substring(uploadDir.length + 1) : reqFile.path;
-        const finalUrl = `https://${imageServer}/${fileName}`;
+        const finalUrl = `https://${imageServer}/${finalFileName}`;
         const claimType = req.body.claimType;
         const handleId = req.body.handleId;
         await new Promise((resolve, reject) => {
           db.run(
-            'INSERT INTO image (time, did, claim_type, handle_id, local_file, size, final_file, mime_type, url) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)',
+            'INSERT INTO image (time, did, claim_type, handle_id, local_file, size, final_file, mime_type, url, is_replacement) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)',
             [
               currentDate,
               issuerDid,
@@ -144,9 +234,10 @@ app.post('/image', uploadMulter.single('image'), async (req, res) => {
               handleId,
               localFile,
               reqFile.size,
-              fileName,
+              finalFileName,
               reqFile.mimetype,
-              finalUrl
+              finalUrl,
+              !!req.body.fileName,
             ],
             (dbErr) => {
               if (dbErr) {
@@ -164,7 +255,7 @@ app.post('/image', uploadMulter.single('image'), async (req, res) => {
           Body: data,
           Bucket: bucketName, // S3 Bucket name
           ContentType: reqFile.mimetype, // File content type
-          Key: fileName, // File name to use in S3
+          Key: finalFileName, // File name to use in S3
         };
         if (process.env.S3_SET_ACL === 'true') {
           params.ACL = 'public-read';
@@ -174,10 +265,10 @@ app.post('/image', uploadMulter.single('image'), async (req, res) => {
         if (response.$metadata.httpStatusCode !== 200) {
           const errorTime = new Date().toISOString();
           console.error(errorTime, "Error uploading to S3 with bad HTTP status, with metadata:", response.$metadata);
-          return res.status(500).send(JSON.stringify({
+          return res.status(500).send({
             success: false,
             message: "Got bad status of " + response.$metadata.httpStatusCode + " from S3. See server logs at " + errorTime
-          }));
+          });
         } else {
           fs.rm(reqFile.path, (err) => {
             if (err) {
@@ -186,24 +277,24 @@ app.post('/image', uploadMulter.single('image'), async (req, res) => {
           });
           // AWS URL: https://gifts-image-test.s3.amazonaws.com/gifts-image-test/FILE
           // American Cloud URL: https://a2-west.americancloud.com/TENANT:giftsimagetest/FILE
-          return res.status(200).send(JSON.stringify({success: true, url: finalUrl}));
+          return res.status(201).send({success: true, url: finalUrl});
         }
       } catch (uploadError) {
         const errorTime = new Date().toISOString();
         console.error(errorTime, "Error uploading to S3:", uploadError);
-        return res.status(500).send(JSON.stringify({
+        return res.status(500).send({
           success: false,
           message: "Got error uploading file. See server logs at " + errorTime + " Error Details: " + uploadError
-        }));
+        });
       }
     })
   } catch (error) {
     const errorTime = new Date().toISOString();
     console.error(errorTime, "Error processing image upload:", error);
-    res.status(500).send(JSON.stringify({
+    res.status(500).send({
       success: false,
-      message: "Got error processing image upload. See server logs at " + errorTime + " Error Details: " + error
-    }));
+      message: "Got error processing image upload. See server logs at " + errorTime + " Error Details: " + JSON.stringify(error)
+    });
   }
 });
 
@@ -240,11 +331,11 @@ app.delete('/image/:url', async (req, res) => {
     });
     if (!thisUserImageFile) {
       console.error('No image entry found for user', issuerDid, '& URL', url, 'so returning 404.');
-      return res.status(404).send(JSON.stringify({ success: false, message: 'No image entry found for user ' + issuerDid + ' & URL ' + url }));
+      return res.status(404).send({ success: false, message: 'No image entry found for user ' + issuerDid + ' & URL ' + url });
     }
 
     // check if any other user recorded this image
-    const otherUserImage = await new Promise((resolve, reject) => {
+    const othersWhoSentImage = await new Promise((resolve, reject) => {
       db.get(
         'SELECT did FROM image WHERE url = ? and did != ?',
         [ url, issuerDid ],
@@ -258,7 +349,7 @@ app.delete('/image/:url', async (req, res) => {
       );
     });
 
-    if (!otherUserImage) {
+    if (!othersWhoSentImage) {
       // remove from S3 since nobody else recorded it
       const params = {
         Bucket: bucketName, // S3 Bucket name
@@ -271,10 +362,10 @@ app.delete('/image/:url', async (req, res) => {
           && response.$metadata.httpStatusCode !== 204) {
         const errorTime = new Date().toISOString();
         console.error(errorTime, "Error deleting from S3 with bad HTTP status, with metadata:", response.$metadata);
-        return res.status(500).send(JSON.stringify({
+        return res.status(500).send({
           success: false,
           message: "Got bad status of " + response.$metadata.httpStatusCode + " from S3. See server logs at " + errorTime
-        }));
+        });
       }
     }
 
@@ -286,22 +377,22 @@ app.delete('/image/:url', async (req, res) => {
         (dbErr) => {
           if (dbErr) {
             const currentDate = new Date().toISOString();
-            console.error(currentDate, "Error deleting record from", issuerDid, "into database:", dbErr);
-            // don't continue because then we'll have storage we cannot track (and potentially limit)
+            console.error(currentDate, "Error deleting record by", issuerDid, "with URL", url, "from database:", dbErr);
+            // we'll let them know that it's not all cleaned up so they can try again
             reject(dbErr);
           }
           resolve();
         }
       );
     });
-    return res.status(204).send(JSON.stringify({ success: true }));
+    return res.status(204).send({ success: true });
   } catch (error) {
     const errorTime = new Date().toISOString();
     console.error(errorTime, "Error processing image delete:", error);
-    return res.status(500).send(JSON.stringify({
+    return res.status(500).send({
       success: false,
-      message: "Got error processing image delete. See server logs at " + errorTime + " Error Details: " + error
-    }));
+      message: "Got error processing image delete. See server logs at " + errorTime + " Error Details: " + JSON.stringify(error)
+    });
   }
 });
 
@@ -337,7 +428,7 @@ async function retrievelimits(req, res) {
       console.error("Got bad response of", response.status, "when checking rate limits for", issuerDid);
       return {
         success: false,
-        result: res.status(400).send(JSON.stringify({ success: false, message: 'Got bad status of ' + response.status + ' when checking limits with endorser server. Verify that the account exists and that the JWT works for that server.'}))
+        result: res.status(400).send({ success: false, message: 'Got bad status of ' + response.status + ' when checking limits with endorser server. Verify that the account exists and that the JWT works for that server.'})
       };
     } else {
       const body = await response.json();
@@ -362,7 +453,7 @@ async function retrievelimits(req, res) {
   if (maxImagesPerWeek == null) {
     return {
       success: false,
-      result: res.status(400).send(JSON.stringify({ success: false, message: 'Unable to determine rate limits for this user. Verify that the account exists and that the JWT works for that server.' }))
+      result: res.status(400).send({ success: false, message: 'Unable to determine rate limits for this user. Verify that the account exists and that the JWT works for that server.' })
     };
   }
 
@@ -406,17 +497,17 @@ async function decodeJwt(req, res) {
   if (!auth || !auth.startsWith('Bearer ')) {
     return {
       success: false,
-      result: res.status(401).send(JSON.stringify({success: false, message: 'Missing "Bearer JWT" in Authorization header.'}))
+      result: res.status(401).send({success: false, message: 'Missing "Bearer JWT" in Authorization header.'})
     };
   }
   const jwt = auth.substring('Bearer '.length);
-  const verified = await didJwt.verifyJWT(jwt, { resolver });
+  const verified = await decodeAndVerifyJwt(jwt);
   if (!verified.verified) {
     const errorTime = new Date().toISOString();
     console.error(errorTime, 'Got invalid JWT in Authorization header:', verified);
     return {
       success: false,
-      result: res.status(401).send(JSON.stringify({ success: false, message: 'Got invalid JWT in Authorization header. See server logs at ' + errorTime }))
+      result: res.status(401).send({ success: false, message: 'Got invalid JWT in Authorization header. See server logs at ' + errorTime })
     };
   }
   return { success: true, issuerDid: verified.issuer, jwt: jwt };

src/vc/did-eth-local-resolver.ts

@@ -0,0 +1,46 @@
+import {DIDResolutionResult} from "did-resolver";
+
+/**
+ * This did:ethr resolver instructs the did-jwt machinery to use the
+ * EcdsaSecp256k1RecoveryMethod2020Uses verification method which adds the recovery bit to the
+ * signature to recover the DID's public key from a signature.
+ *
+ * This effectively hard codes the did:ethr DID resolver to use the address as the public key.
+ * @param did : string
+ * @returns {Promise<DIDResolutionResult>}
+ *
+ * Similar code resides in crowd-funder-for-time-pwa and endorser-ch
+ */
+export const didEthLocalResolver = async(did: string): Promise<DIDResolutionResult> => {
+  const didRegex = /^did:ethr:(0x[0-9a-fA-F]{40})$/;
+  const match = did.match(didRegex);
+
+  if (match) {
+    const address = match[1]; // Extract eth address: 0x...
+    const publicKeyHex = address; // Use the address directly as a public key placeholder
+
+    return {
+      didDocumentMetadata: {},
+      didResolutionMetadata: {
+        contentType: "application/did+ld+json"
+      },
+      didDocument: {
+        '@context': [
+          'https://www.w3.org/ns/did/v1',
+          "https://w3id.org/security/suites/secp256k1recovery-2020/v2"
+        ],
+        id: did,
+        verificationMethod: [{
+          id: `${did}#controller`,
+          type: 'EcdsaSecp256k1RecoveryMethod2020',
+          controller: did,
+          blockchainAccountId: "eip155:1:" + publicKeyHex,
+        }],
+        authentication: [`${did}#controller`],
+        assertionMethod: [`${did}#controller`],
+      },
+    };
+  }
+
+  throw new Error(`Unsupported DID format: ${did}`);
+};

src/vc/didPeer.ts

@@ -0,0 +1,139 @@
+import { AsnParser } from "@peculiar/asn1-schema";
+import { ECDSASigValue } from "@peculiar/asn1-ecc";
+import crypto from "crypto";
+import { decode as cborDecode } from "cbor-x";
+
+/**
+ *
+ *
+ * similar code is in crowd-funder-for-time-pwa libs/crypto/vc/passkeyDidPeer.ts verifyJwtWebCrypto
+ *
+ * @returns {Promise<boolean>}
+ */
+export async function verifyPeerSignature(
+  payloadBytes: Uint8Array,
+  publicKeyBytes: Uint8Array,
+  signatureBytes: Uint8Array
+) {
+  // this simple approach doesn't work
+  //const verify = crypto.createVerify('sha256')
+  //verify.update(preimage)
+  //const result = verify.verify(publicKey, signature)
+
+  const finalSignatureBuffer = unwrapEC2Signature(signatureBytes);
+  const verifyAlgorithm = {
+    name: "ECDSA",
+    hash: { name: "SHA-256" },
+  };
+  const publicKeyJwk = cborToKeys(publicKeyBytes).publicKeyJwk;
+  const keyAlgorithm = {
+    name: "ECDSA",
+    namedCurve: publicKeyJwk.crv,
+  };
+  const publicKeyCryptoKey = await crypto.subtle.importKey(
+    "jwk",
+    publicKeyJwk,
+    keyAlgorithm,
+    false,
+    ["verify"],
+  );
+  const verified = await crypto.subtle.verify(
+    verifyAlgorithm,
+    publicKeyCryptoKey,
+    finalSignatureBuffer,
+    payloadBytes,
+  );
+  return verified;
+}
+
+function cborToKeys(publicKeyBytes: Uint8Array) {
+  const jwkObj = cborDecode(publicKeyBytes);
+  if (
+    jwkObj[1] != 2 || // kty "EC"
+    jwkObj[3] != -7 || // alg "ES256"
+    jwkObj[-1] != 1 || // crv "P-256"
+    jwkObj[-2].length != 32 || // x
+    jwkObj[-3].length != 32 // y
+  ) {
+    throw new Error("Unable to extract key.");
+  }
+  const publicKeyJwk = {
+    alg: "ES256",
+    crv: "P-256",
+    kty: "EC",
+    x: arrayToBase64Url(jwkObj[-2]),
+    y: arrayToBase64Url(jwkObj[-3]),
+  };
+  const publicKeyBuffer = Buffer.concat([
+    Buffer.from(jwkObj[-2]),
+    Buffer.from(jwkObj[-3]),
+  ]);
+  return { publicKeyJwk, publicKeyBuffer };
+}
+
+function toBase64Url(anythingB64: string) {
+  return anythingB64.replace(/\+/g, "-").replace(/\//g, "_").replace(/=+$/, "");
+}
+
+function arrayToBase64Url(anything: Uint8Array) {
+  return toBase64Url(Buffer.from(anything).toString("base64"));
+}
+
+/**
+ * In WebAuthn, EC2 signatures are wrapped in ASN.1 structure so we need to peel r and s apart.
+ *
+ * See https://www.w3.org/TR/webauthn-2/#sctn-signature-attestation-types
+ *
+ * @return Uint8Array of the signature inside
+ */
+function unwrapEC2Signature(signature: Uint8Array) {
+  const parsedSignature = AsnParser.parse(signature, ECDSASigValue);
+  let rBytes = new Uint8Array(parsedSignature.r);
+  let sBytes = new Uint8Array(parsedSignature.s);
+
+  if (shouldRemoveLeadingZero(rBytes)) {
+    rBytes = rBytes.slice(1);
+  }
+
+  if (shouldRemoveLeadingZero(sBytes)) {
+    sBytes = sBytes.slice(1);
+  }
+
+  const finalSignature = isoUint8ArrayConcat([rBytes, sBytes]);
+
+  return finalSignature;
+}
+
+/**
+ * Determine if the DER-specific `00` byte at the start of an ECDSA signature byte sequence
+ * should be removed based on the following logic:
+ *
+ * "If the leading byte is 0x0, and the high order bit on the second byte is not set to 0,
+ * then remove the leading 0x0 byte"
+ *
+ * @return true if leading zero should be removed
+ */
+function shouldRemoveLeadingZero(bytes: Uint8Array) {
+  return bytes[0] === 0x0 && (bytes[1] & (1 << 7)) !== 0;
+}
+
+// from https://github.com/MasterKale/SimpleWebAuthn/blob/master/packages/server/src/helpers/iso/isoUint8Array.ts#L49
+/**
+ * Combine multiple Uint8Arrays into a single Uint8Array
+ *
+ * @param arrays - Uint8Array[]
+ * @return Uint8Array
+ */
+function isoUint8ArrayConcat(arrays: Uint8Array[]) {
+  let pointer = 0;
+  const totalLength = arrays.reduce((prev, curr) => prev + curr.length, 0);
+
+  const toReturn = new Uint8Array(totalLength);
+
+  arrays.forEach((arr) => {
+    toReturn.set(arr, pointer);
+    pointer += arr.length;
+  });
+
+  return toReturn;
+}

src/vc/index.ts

@@ -0,0 +1,88 @@
+/**
+ * Verifiable Credential & DID functions, specifically for EndorserSearch.org tools
+ *
+ * The goal is to make this folder similar across projects, then move it to a library.
+ * Other projects: endorser-ch, crowd-funder-for-time-pwa
+ *
+ */
+
+import base64url from "base64url";
+import didJwt from "did-jwt";
+import {Resolver} from "did-resolver";
+
+import {didEthLocalResolver} from "./did-eth-local-resolver";
+import {verifyJwt as peerVerifyJwt} from "./passkeyDidPeer";
+
+
+export const TEST_BYPASS_ENV_VALUE = "test-local";
+export const ETHR_DID_PREFIX = 'did:ethr:'
+export const PEER_DID_PREFIX = 'did:peer:'
+export const JWT_VERIFY_FAILED_CODE = "JWT_VERIFY_FAILED_CODE"
+export const UNSUPPORTED_DID_METHOD_CODE = "UNSUPPORTED_DID_METHOD"
+
+const resolver = new Resolver({
+  'ethr': didEthLocalResolver
+});
+
+// return Promise of at least { issuer, payload, verified boolean }
+// ... and also if successfully verified by did-jwt (not JWANT): data, doc, signature, signer
+export async function decodeAndVerifyJwt(jwt: string) {
+  const pieces = jwt.split('.')
+  const header = JSON.parse(base64url.decode(pieces[0]))
+  const payload = JSON.parse(base64url.decode(pieces[1]))
+  const issuerDid = payload.iss
+  if (!issuerDid) {
+    return Promise.reject({
+      clientError: {
+        message: `Missing "iss" field in JWT.`,
+      }
+    })
+  }
+  if (issuerDid && issuerDid.startsWith(ETHR_DID_PREFIX) && process.env.NODE_ENV === TEST_BYPASS_ENV_VALUE) {
+    // Error of "Cannot read property 'toString' of undefined" usually means the JWT is malformed
+    // eg. no "." separators.
+    let nowEpoch =  Math.floor(new Date().getTime() / 1000)
+    if (payload.exp < nowEpoch) {
+      console.log("JWT with exp " + payload.exp
+        + " has expired but we're in test mode so we'll use a new time."
+      )
+      payload.exp = nowEpoch + 100
+    }
+    return { issuer: issuerDid, payload, verified: true } // other elements will = undefined
+  }
+
+  if (issuerDid.startsWith(ETHR_DID_PREFIX)) {
+    try {
+      let verified = await didJwt.verifyJWT(jwt, {resolver})
+      return verified
+
+    } catch (e) {
+      return Promise.reject({
+        clientError: {
+          message: `JWT failed verification: ` + e,
+          code: JWT_VERIFY_FAILED_CODE
+        }
+      })
+    }
+  }
+
+  if (issuerDid.startsWith(PEER_DID_PREFIX) && header.typ === "JWANT") {
+    const { claimPayload, verified } = await peerVerifyJwt(payload, issuerDid, pieces[2])
+    return { issuer: issuerDid, payload: claimPayload, verified: verified }
+  }
+
+  if (issuerDid.startsWith(PEER_DID_PREFIX)) {
+    return Promise.reject({
+      clientError: {
+        message: `JWT with a PEER DID currently only supported with typ == JWANT. Contact us us for JWT suport since it should be straightforward.`
+      }
+    })
+  }
+
+  return Promise.reject({
+    clientError: {
+      message: `Unsupported DID method ${issuerDid}`,
+      code: UNSUPPORTED_DID_METHOD_CODE
+    }
+  })
+}

src/vc/passkeyDidPeer.ts

@@ -0,0 +1,104 @@
+import crypto from "crypto";
+import didJwt from "did-jwt";
+
+import {PEER_DID_PREFIX, TEST_BYPASS_ENV_VALUE} from "./index";
+import {verifyPeerSignature} from "./didPeer";
+
+/**
+ *
+ * @param payload
+ * @param issuerDid
+ * @param signatureString
+ * @returns {Promise<{claimPayload: string, verified: boolean}>}
+ */
+export async function verifyJwt(payload: any, issuerDid: any, signatureString: any) {
+  if (!payload.iss) {
+    return Promise.reject({
+      clientError: {
+        message: `JWT is missing an "iss" field.`,
+      }
+    })
+  }
+  let nowEpoch =  Math.floor(new Date().getTime() / 1000)
+  if (!payload.exp) {
+    return Promise.reject({
+      clientError: {
+        message: `JWT with is missing an "exp" field.`,
+      }
+    })
+  }
+  if (payload.exp < nowEpoch && process.env.NODE_ENV !== TEST_BYPASS_ENV_VALUE) {
+    return Promise.reject({
+      clientError: {
+        message: `JWT with exp ${payload.exp} has expired.`,
+      }
+    });
+  }
+
+  const authData: string = payload.AuthenticationDataB64URL
+  const clientData: string = payload.ClientDataJSONB64URL
+  if (!authData || !clientData) {
+    return Promise.reject({
+      clientError: {
+        message: `JWT with typ == JWANT requires AuthenticationData and ClientDataJSON.`
+      }
+    })
+  }
+
+  const decodedAuthDataBuff = Buffer.from(authData, 'base64url')
+  const decodedClientData = Buffer.from(clientData, 'base64url')
+
+  let claimPayload = JSON.parse(decodedClientData.toString())
+  if (claimPayload.challenge) {
+    claimPayload = JSON.parse(Buffer.from(claimPayload.challenge, "base64url").toString())
+    if (!claimPayload.exp) {
+      claimPayload.exp = payload.exp
+    }
+    if (!claimPayload.iat) {
+      claimPayload.iat = payload.iat
+    }
+    if (!claimPayload.iss) {
+      claimPayload.iss = payload.iss
+    }
+  }
+  if (!claimPayload.exp) {
+    return Promise.reject({
+      clientError: {
+        message: `JWT client data challenge is missing an "exp" field.`,
+      }
+    })
+  }
+  if (claimPayload.exp < nowEpoch && process.env.NODE_ENV !== TEST_BYPASS_ENV_VALUE) {
+    return Promise.reject({
+      clientError: {
+        message: `JWT client data challenge exp time is past.`,
+      }
+    })
+  }
+  if (claimPayload.exp !== payload.exp) {
+    return Promise.reject({
+      clientError: {
+        message: `JWT client data challenge "exp" field doesn't match the outside payload "exp".`,
+      }
+    })
+  }
+  if (claimPayload.iss !== payload.iss) {
+    return Promise.reject({
+      clientError: {
+        message: `JWT client data challenge "iss" field doesn't match the outside payload "iss".`,
+      }
+    })
+  }
+
+  const hashedClientDataBuff = crypto.createHash("sha256")
+  .update(decodedClientData)
+  .digest()
+  const preimage = new Uint8Array(Buffer.concat([decodedAuthDataBuff, hashedClientDataBuff]))
+  const PEER_DID_MULTIBASE_PREFIX = PEER_DID_PREFIX + "0"
+  // Uint8Array
+  const publicKey = didJwt.multibaseToBytes(issuerDid.substring(PEER_DID_MULTIBASE_PREFIX.length));
+  const signature = new Uint8Array(Buffer.from(signatureString, 'base64url'))
+  const verified = await verifyPeerSignature(preimage, publicKey, signature)
+  return { claimPayload, verified }
+
+}

test/Makefile

@@ -0,0 +1,6 @@
+# see ../Makefile.test
+
+TESTS ?= \
+    test.sh
+
+include ../Makefile.test

test/test.sh

@@ -0,0 +1,147 @@
+#!/usr/bin/env bash
+
+# Execute from the "test" directory so that the test files are available.
+#
+# We recommend you have the pkgx.dev tools installed.
+# If you want to use your installed curl & jq & node, you can comment out the two "pkgx" commands.
+
+HOST=http://localhost:3002
+
+if ! [[ "$PWD" == */test ]]; then
+  echo "Error: Run this script in the 'test' directory."
+  exit 1
+fi
+
+# load the tools: curl, jq, node
+eval "$(pkgx --shellcode)"
+env +curl +jq +node
+
+JWT_CODE_USER_0='OWNER_DID="did:ethr:0x0000694B58C2cC69658993A90D3840C560f2F51F"; OWNER_PRIVATE_KEY_HEX="2b6472c026ec2aa2c4235c994a63868fc9212d18b58f6cbfe861b52e71330f5b"; didJwt = require("did-jwt"); didJwt.createJWT({ exp: Math.floor(Date.now() / 1000) + 60, iat: Math.floor(Date.now() / 1000), iss: OWNER_DID }, { issuer: OWNER_DID, signer: didJwt.SimpleSigner(OWNER_PRIVATE_KEY_HEX) }).then(console.log)'
+JWT_CODE_USER_1='OWNER_DID="did:ethr:0x111d15564f824D56C7a07b913aA7aDd03382aA39"; OWNER_PRIVATE_KEY_HEX="be64d297e1c6f3545971cd0bc24c3bf32656f8639a2ae32cb84a1e3c75ad69cd"; didJwt = require("did-jwt"); didJwt.createJWT({ exp: Math.floor(Date.now() / 1000) + 60, iat: Math.floor(Date.now() / 1000), iss: OWNER_DID }, { issuer: OWNER_DID, signer: didJwt.SimpleSigner(OWNER_PRIVATE_KEY_HEX) }).then(console.log)'
+
+# exit as soon as anything fails
+set -e
+
+echo "Upload test0.png by user #0"
+JWT=$(node -e "$JWT_CODE_USER_0")
+echo JWT: $JWT
+RESULT=$(curl -X POST -H "Authorization: Bearer $JWT" -F "image=@test0.png" "$HOST/image")
+echo curl result: $RESULT
+SUCCESS=$(echo $RESULT | jq -r '.success')
+if [ $SUCCESS = "true" ]; then
+  echo "User #0 uploaded file."
+else
+  echo "User #0 failed to upload a file.";
+  exit 1
+fi
+
+echo "Download from the URL supplied"
+URL0=$(echo $RESULT | jq -r '.url')
+# -L to follow redirect because the returned URL is a timesafari.app URL
+STATUS_CODE=$(curl -o test0-back.png -w "%{http_code}" -L $URL0);
+if [ $STATUS_CODE -ne 200 ]; then
+  echo "File is not accessible, received status code: $STATUS_CODE";
+fi
+
+echo "Check that downloaded file is the same as the original"
+if diff "test0.png" "test0-back.png" >/dev/null; then
+  echo "Got the same file."
+else
+  echo "Did not get the same file."
+  exit 1
+fi
+
+echo "Upload test1.png by user #1"
+JWT=$(node -e "$JWT_CODE_USER_1")
+echo JWT: $JWT
+RESULT=$(curl -X POST -H "Authorization: Bearer $JWT" -F "image=@test1.png" "$HOST/image")
+echo curl result: $RESULT
+URL2=$(echo $RESULT | jq -r '.url')
+if [ "$URL0" != "$URL2" ]; then
+  echo "URLs 0 & 1 are different."
+else
+  echo "URLs 0 & 1 are not different."
+  exit 1
+fi
+
+echo "Now fail to upload a change to the image by user 1"
+FILENAME0=$(basename $URL0)
+JWT=$(node -e "$JWT_CODE_USER_1")
+echo JWT: $JWT
+RESULT=$(curl -X POST -H "Authorization: Bearer $JWT" -F "image=@test1.png" -F "fileName=$FILENAME0" "$HOST/image")
+echo curl result: $RESULT
+SUCCESS=$(echo $RESULT | jq -r '.success')
+if [ $SUCCESS = "false" ]; then
+  echo "User #1 could not replace existing file."
+else
+  echo "File may have been replaced wrongly.";
+  exit 1
+fi
+
+echo "Now successfully upload a change to the image by user 0"
+JWT=$(node -e "$JWT_CODE_USER_0")
+echo JWT: $JWT
+RESULT=$(curl -X POST -H "Authorization: Bearer $JWT" -F "image=@test1.png" -F "fileName=$FILENAME0" "$HOST/image")
+echo curl result: $RESULT
+SUCCESS=$(echo $RESULT | jq -r '.success')
+if [ $SUCCESS = "true" ]; then
+  echo "User #0 did replace file.";
+else
+  echo "User #0 couldn't replace file.";
+  exit 1
+fi
+
+echo "Fail to remove test file 0 from the service"
+TEST_URL="https%3A%2F%2Ftest-image.timesafari.app%2F4599145c3a8792a678f458747f2d8512c680e8680bf5563c35b06cd770051ed2.png"
+JWT=$(node -e "$JWT_CODE_USER_1")
+echo JWT: $JWT
+RESULT=$(curl -X DELETE -H "Authorization: Bearer $JWT" "$HOST/image/$TEST_URL")
+echo curl result: $RESULT
+SUCCESS=$(echo $RESULT | jq -r '.success')
+if [ "$SUCCESS" = "false" ]; then
+  echo "Test file 0 was not cleaned off server."
+else
+  echo "Test file 0 was cleaned off server.";
+  exit 1
+fi
+
+echo "Remove test file 0 from the service"
+TEST_URL="https%3A%2F%2Ftest-image.timesafari.app%2F4599145c3a8792a678f458747f2d8512c680e8680bf5563c35b06cd770051ed2.png"
+JWT=$(node -e "$JWT_CODE_USER_0")
+echo JWT: $JWT
+RESULT=$(curl -X DELETE -H "Authorization: Bearer $JWT" "$HOST/image/$TEST_URL")
+echo curl result: $RESULT
+SUCCESS=$(echo $RESULT | jq -r '.success')
+if [[ -z "$RESULT" ]] || [[ "$SUCCESS" = "true" ]]; then
+  echo "Test file 0 was cleaned off server."
+else
+  echo "Test file 0 was not cleaned off server.";
+  exit 1
+fi
+
+echo "Remove test file 1 from the service"
+TEST_URL="https%3A%2F%2Ftest-image.timesafari.app%2F83801e59789f962ddd19dbf99abd65b416e4c6560c28bdb3e663cea045561b07.png"
+JWT=$(node -e "$JWT_CODE_USER_1")
+echo JWT: $JWT
+RESULT=$(curl -X DELETE -H "Authorization: Bearer $JWT" "$HOST/image/$TEST_URL")
+echo curl result: $RESULT
+SUCCESS=$(echo $RESULT | jq -r '.success')
+if [[ -z "$RESULT" ]] || [[ "$SUCCESS" = "true" ]]; then
+  echo "Test file 1 was cleaned off server."
+else
+  echo "Test file 1 was not cleaned off server.";
+  exit 1
+fi
+
+echo "Upload test2.png by did:peer user"
+JWT="eyJ0eXAiOiJKV0FOVCIsImFsZyI6IkVTMjU2In0.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.MEQCIAsMMNUcSjoxn0LZuE6FvZ6dsm-uQROeX3RPWt6QlRyPAiA670XdJXnLw8QFR9a6KCMt-qUyGZg88mMfT-1DtipcwA"
+echo JWT: $JWT
+RESULT=$(curl -X POST -H "Authorization: Bearer $JWT" -F "image=@test2.svg" "$HOST/image")
+echo curl result: $RESULT
+SUCCESS=$(echo $RESULT | jq -r '.success')
+if [ $SUCCESS = "true" ]; then
+  echo "User #2 uploaded SVG file."
+else
+  echo "User #2 failed to upload SVG file. Note that this may be because the server wasn't started with NODE_ENV=test-local which bypasses check of the exp date.";
+  exit 1
+fi

test/test2.svg

@@ -0,0 +1,86 @@
+<?xml version="1.0" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
+ "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
+<svg version="1.0" xmlns="http://www.w3.org/2000/svg"
+ width="512.000000pt" height="512.000000pt" viewBox="0 0 512.000000 512.000000"
+ preserveAspectRatio="xMidYMid meet">
+
+<g transform="translate(0.000000,512.000000) scale(0.100000,-0.100000)"
+fill="#000000" stroke="none">
+<path d="M2480 4005 c-25 -7 -58 -20 -75 -29 -16 -9 -40 -16 -52 -16 -17 0
+-24 -7 -28 -27 -3 -16 -14 -45 -24 -65 -21 -41 -13 -55 18 -38 25 13 67 13 92
+-1 15 -8 35 -4 87 17 99 39 130 41 197 10 64 -29 77 -31 107 -15 20 11 20 11
+-3 35 -12 13 -30 24 -38 24 -24 1 -132 38 -148 51 -8 7 -11 20 -7 32 12 37
+-40 47 -126 22z"/>
+<path d="M1450 3775 c-7 -8 -18 -15 -24 -15 -7 0 -31 -14 -54 -32 -29 -22 -38
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+<path d="M3710 3765 c0 -20 8 -28 39 -41 22 -8 42 -22 45 -30 5 -14 42 -19 70
+-8 10 4 -7 21 -58 55 -41 27 -79 49 -85 49 -6 0 -11 -11 -11 -25z"/>
+<path d="M3173 3734 c-9 -25 10 -36 35 -18 12 8 22 19 22 25 0 16 -50 10 -57
+-7z"/>
+<path d="M1982 3728 c6 -16 36 -34 44 -26 3 4 4 14 1 23 -7 17 -51 21 -45 3z"/>
+<path d="M1540 3620 c0 -5 7 -10 16 -10 8 0 12 5 9 10 -3 6 -10 10 -16 10 -5
+0 -9 -4 -9 -10z"/>
+<path d="M4467 3624 c-4 -4 23 -27 60 -50 84 -56 99 -58 67 -9 -28 43 -107 79
+-127 59z"/>
+<path d="M655 3552 c-11 -2 -26 -9 -33 -14 -7 -6 -27 -18 -45 -27 -36 -18 -58
+-64 -39 -83 9 -9 25 1 70 43 53 48 78 78 70 84 -2 1 -12 -1 -23 -3z"/>
+<path d="M1015 3460 c-112 -24 -247 -98 -303 -165 -53 -65 -118 -214 -136
+-311 -20 -113 -20 -145 -1 -231 20 -88 49 -153 102 -230 79 -113 186 -182 331
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+-26 -64 -29 -155 -29 -111 0 -152 14 -206 68 -49 49 -63 85 -64 162 0 59 4 78
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+<path d="M3985 3464 c-44 -7 -154 -44 -200 -67 -55 -28 -138 -96 -162 -132
+-10 -16 -39 -75 -64 -130 l-44 -100 0 -160 0 -160 45 -90 c53 -108 152 -214
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+c129 -68 202 -209 160 -309 -15 -35 -15 -42 -1 -72 26 -55 -3 -118 -59 -129
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+15 -113 37 -161 91 -110 120 -50 331 109 385 24 8 44 23 52 39 6 14 18 38 25
+53 33 72 127 93 213 47z"/>
+<path d="M487 3394 c-21 -12 -27 -21 -25 -40 2 -14 7 -26 12 -27 14 -3 48 48
+44 66 -3 14 -6 14 -31 1z"/>
+</g>
+</svg>

tsconfig.json

@@ -0,0 +1,114 @@
+{
+  "compilerOptions": {
+    /* Visit https://aka.ms/tsconfig to read more about this file */
+
+    /* Projects */
+    // "incremental": true,                              /* Save .tsbuildinfo files to allow for incremental compilation of projects. */
+    // "composite": true,                                /* Enable constraints that allow a TypeScript project to be used with project references. */
+    // "tsBuildInfoFile": "./.tsbuildinfo",              /* Specify the path to .tsbuildinfo incremental compilation file. */
+    // "disableSourceOfProjectReferenceRedirect": true,  /* Disable preferring source files instead of declaration files when referencing composite projects. */
+    // "disableSolutionSearching": true,                 /* Opt a project out of multi-project reference checking when editing. */
+    // "disableReferencedProjectLoad": true,             /* Reduce the number of projects loaded automatically by TypeScript. */
+
+    /* Language and Environment */
+    "target": "es2016",                                  /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */
+    // "lib": [],                                        /* Specify a set of bundled library declaration files that describe the target runtime environment. */
+    // "jsx": "preserve",                                /* Specify what JSX code is generated. */
+    // "experimentalDecorators": true,                   /* Enable experimental support for legacy experimental decorators. */
+    // "emitDecoratorMetadata": true,                    /* Emit design-type metadata for decorated declarations in source files. */
+    // "jsxFactory": "",                                 /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
+    // "jsxFragmentFactory": "",                         /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
+    // "jsxImportSource": "",                            /* Specify module specifier used to import the JSX factory functions when using 'jsx: react-jsx*'. */
+    // "reactNamespace": "",                             /* Specify the object invoked for 'createElement'. This only applies when targeting 'react' JSX emit. */
+    // "noLib": true,                                    /* Disable including any library files, including the default lib.d.ts. */
+    // "useDefineForClassFields": true,                  /* Emit ECMAScript-standard-compliant class fields. */
+    // "moduleDetection": "auto",                        /* Control what method is used to detect module-format JS files. */
+
+    /* Modules */
+    "module": "commonjs",                                /* Specify what module code is generated. */
+    // "rootDir": "./",                                  /* Specify the root folder within your source files. */
+    // "moduleResolution": "node10",                     /* Specify how TypeScript looks up a file from a given module specifier. */
+    // "baseUrl": "./",                                  /* Specify the base directory to resolve non-relative module names. */
+    // "paths": {},                                      /* Specify a set of entries that re-map imports to additional lookup locations. */
+    // "rootDirs": [],                                   /* Allow multiple folders to be treated as one when resolving modules. */
+    // "typeRoots": [],                                  /* Specify multiple folders that act like './node_modules/@types'. */
+    // "types": [],                                      /* Specify type package names to be included without being referenced in a source file. */
+    // "allowUmdGlobalAccess": true,                     /* Allow accessing UMD globals from modules. */
+    // "moduleSuffixes": [],                             /* List of file name suffixes to search when resolving a module. */
+    // "allowImportingTsExtensions": true,               /* Allow imports to include TypeScript file extensions. Requires '--moduleResolution bundler' and either '--noEmit' or '--emitDeclarationOnly' to be set. */
+    // "resolvePackageJsonExports": true,                /* Use the package.json 'exports' field when resolving package imports. */
+    // "resolvePackageJsonImports": true,                /* Use the package.json 'imports' field when resolving imports. */
+    // "customConditions": [],                           /* Conditions to set in addition to the resolver-specific defaults when resolving imports. */
+    // "resolveJsonModule": true,                        /* Enable importing .json files. */
+    // "allowArbitraryExtensions": true,                 /* Enable importing files with any extension, provided a declaration file is present. */
+    // "noResolve": true,                                /* Disallow 'import's, 'require's or '<reference>'s from expanding the number of files TypeScript should add to a project. */
+
+    /* JavaScript Support */
+    // "allowJs": true,                                  /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */
+    // "checkJs": true,                                  /* Enable error reporting in type-checked JavaScript files. */
+    // "maxNodeModuleJsDepth": 1,                        /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. */
+
+    /* Emit */
+    // "declaration": true,                              /* Generate .d.ts files from TypeScript and JavaScript files in your project. */
+    // "declarationMap": true,                           /* Create sourcemaps for d.ts files. */
+    // "emitDeclarationOnly": true,                      /* Only output d.ts files and not JavaScript files. */
+    // "sourceMap": true,                                /* Create source map files for emitted JavaScript files. */
+    // "inlineSourceMap": true,                          /* Include sourcemap files inside the emitted JavaScript. */
+    // "outFile": "./",                                  /* Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output. */
+    "outDir": "./dist",                                  /* Specify an output folder for all emitted files. */
+    // "removeComments": true,                           /* Disable emitting comments. */
+    // "noEmit": true,                                   /* Disable emitting files from a compilation. */
+    // "importHelpers": true,                            /* Allow importing helper functions from tslib once per project, instead of including them per-file. */
+    // "downlevelIteration": true,                       /* Emit more compliant, but verbose and less performant JavaScript for iteration. */
+    // "sourceRoot": "",                                 /* Specify the root path for debuggers to find the reference source code. */
+    // "mapRoot": "",                                    /* Specify the location where debugger should locate map files instead of generated locations. */
+    // "inlineSources": true,                            /* Include source code in the sourcemaps inside the emitted JavaScript. */
+    // "emitBOM": true,                                  /* Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files. */
+    // "newLine": "crlf",                                /* Set the newline character for emitting files. */
+    // "stripInternal": true,                            /* Disable emitting declarations that have '@internal' in their JSDoc comments. */
+    // "noEmitHelpers": true,                            /* Disable generating custom helper functions like '__extends' in compiled output. */
+    // "noEmitOnError": true,                            /* Disable emitting files if any type checking errors are reported. */
+    // "preserveConstEnums": true,                       /* Disable erasing 'const enum' declarations in generated code. */
+    // "declarationDir": "./",                           /* Specify the output directory for generated declaration files. */
+
+    /* Interop Constraints */
+    // "isolatedModules": true,                          /* Ensure that each file can be safely transpiled without relying on other imports. */
+    // "verbatimModuleSyntax": true,                     /* Do not transform or elide any imports or exports not marked as type-only, ensuring they are written in the output file's format based on the 'module' setting. */
+    // "isolatedDeclarations": true,                     /* Require sufficient annotation on exports so other tools can trivially generate declaration files. */
+    // "allowSyntheticDefaultImports": true,             /* Allow 'import x from y' when a module doesn't have a default export. */
+    "esModuleInterop": true,                             /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */
+    // "preserveSymlinks": true,                         /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */
+    "forceConsistentCasingInFileNames": true,            /* Ensure that casing is correct in imports. */
+
+    /* Type Checking */
+    "strict": true,                                      /* Enable all strict type-checking options. */
+    // "noImplicitAny": true,                            /* Enable error reporting for expressions and declarations with an implied 'any' type. */
+    // "strictNullChecks": true,                         /* When type checking, take into account 'null' and 'undefined'. */
+    // "strictFunctionTypes": true,                      /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */
+    // "strictBindCallApply": true,                      /* Check that the arguments for 'bind', 'call', and 'apply' methods match the original function. */
+    // "strictPropertyInitialization": true,             /* Check for class properties that are declared but not set in the constructor. */
+    // "noImplicitThis": true,                           /* Enable error reporting when 'this' is given the type 'any'. */
+    // "useUnknownInCatchVariables": true,               /* Default catch clause variables as 'unknown' instead of 'any'. */
+    // "alwaysStrict": true,                             /* Ensure 'use strict' is always emitted. */
+    // "noUnusedLocals": true,                           /* Enable error reporting when local variables aren't read. */
+    // "noUnusedParameters": true,                       /* Raise an error when a function parameter isn't read. */
+    // "exactOptionalPropertyTypes": true,               /* Interpret optional property types as written, rather than adding 'undefined'. */
+    // "noImplicitReturns": true,                        /* Enable error reporting for codepaths that do not explicitly return in a function. */
+    // "noFallthroughCasesInSwitch": true,               /* Enable error reporting for fallthrough cases in switch statements. */
+    // "noUncheckedIndexedAccess": true,                 /* Add 'undefined' to a type when accessed using an index. */
+    // "noImplicitOverride": true,                       /* Ensure overriding members in derived classes are marked with an override modifier. */
+    // "noPropertyAccessFromIndexSignature": true,       /* Enforces using indexed accessors for keys declared using an indexed type. */
+    // "allowUnusedLabels": true,                        /* Disable error reporting for unused labels. */
+    // "allowUnreachableCode": true,                     /* Disable error reporting for unreachable code. */
+
+    /* Completeness */
+    // "skipDefaultLibCheck": true,                      /* Skip type checking .d.ts files that are included with TypeScript. */
+    "skipLibCheck": true                                 /* Skip type checking all .d.ts files. */
+  },
+  "include": [
+    "src"
+  ],
+  "exclude": [
+    "node_modules"
+  ]
+}