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Refactor MIME type check for machine-specific validation

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Updated the MIME type validation function to handle machine-specific MIME type sets. This ensures that a MIME type must be acceptable across all associated machines. Enhanced clarity and structure by using a map to maintain MIME types for each machine.
This commit is contained in:
Mathis H (Avnyr) 2024-10-14 11:21:50 +02:00
parent 2ca13714a4
commit 30c9c28e3d
Signed by: Mathis
GPG Key ID: DD9E0666A747D126
1 changed files with 18 additions and 8 deletions
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26
apps/backend/src/app/storage/storage.service.ts
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@ -53,13 +53,19 @@ export class StorageService {
file: Buffer,
): Promise<boolean> {
/**
* Checks if the current MIME type is allowed based on the given set of allowed MIME types.
* @param {Set<string>} allowedMime - The set of allowed MIME types.
* @param {string} currentMime - The current MIME type to check.
* @return {boolean} - True if the current MIME type is allowed, false otherwise.
* Checks if the given MIME type is present in all machines' MIME type sets.
*
* @param {Map<string, Set<string>>} mimesForMachines - A map where the key is the machine identifier and the value is a set of MIME types supported by that machine.
* @param {string} currentMime - The MIME type to check for presence in all sets.
* @return {boolean} Returns true if the MIME type is found in all sets, otherwise false.
*/
function checkMime(allowedMime: Set<string>, currentMime: string): boolean {
return allowedMime.has(currentMime);
function checkMime(mimesForMachines: Map<string, Set<string>>, currentMime: string): boolean {
let notFoundCount = 0;
for (const mimesForMachine of mimesForMachines) {
const [key, set] = mimesForMachine
if (!set.has(currentMime)) {notFoundCount++}
}
return notFoundCount === 0;
}
const fileType = filetypeinfo(file);
@ -67,6 +73,7 @@ export class StorageService {
// Array of MIMEs with possible duplicate field
const _mimes: Array<string> = [];
const machinesMap: Map<string, Set<string>> = new Map<string, Set<string>>()
// Fetching MIMEs for the associated machines
for (const machineId of machineIds) {
console.debug(`Fetching mimeTypes for machine : ${machineId}`);
@ -90,9 +97,12 @@ export class StorageService {
);
console.debug(`Total : ${_allowedMime.length}`);
// Append each MIME of a machine
const tempSet = new Set<string>()
for (const allowedMimeElement of _allowedMime) {
_mimes.push(allowedMimeElement.slug);
tempSet.add(allowedMimeElement.slug)
}
machinesMap.set(machineId, tempSet)
tempSet.clear()
}
//Store the MIMEs without duplicate
const mimeSet = new Set(_mimes);
@ -107,7 +117,7 @@ export class StorageService {
});
}
if (!checkMime(mimeSet, fileType[0].mime))
if (!checkMime(machinesMap, fileType[0].mime))
throw new BadRequestException({
cause: "MIME type",
description: `Invalid MIME type. Allowed MIME types are: ${[...mimeSet].join(", ")}.`,