Add support for file uploads with custom S3 endpoints

Addresses #5459

.github/AUTHORS.md

@@ -9,3 +9,4 @@ Contributors
 * Michael Drury - [@mike12345567](https://github.com/mike12345567)
 * Peter Clement - [@PClmnt](https://github.com/PClmnt)
 * Rory Powell - [@Rory-Powell](https://github.com/Rory-Powell)
+* Michaël St-Georges [@CSLTech](https://github.com/CSLTech)

packages/builder/src/components/design/settings/controls/S3DataSourceSelect.svelte

@@ -5,7 +5,7 @@
   export let value = null
 
   $: dataSources = $datasources.list
-    .filter(ds => ds.source === "S3" && !ds.config?.endpoint)
+    .filter(ds => ds.source === "S3")
     .map(ds => ({
       label: ds.name,
       value: ds._id,

packages/server/src/api/controllers/static/index.ts

@@ -300,11 +300,6 @@ export const getSignedUploadURL = async function (ctx: Ctx) {
     ctx.throw(400, "The specified datasource could not be found")
   }
 
-  // Ensure we aren't using a custom endpoint
-  if (datasource?.config?.endpoint) {
-    ctx.throw(400, "S3 datasources with custom endpoints are not supported")
-  }
-
   // Determine type of datasource and generate signed URL
   let signedUrl
   let publicUrl
@@ -317,6 +312,7 @@ export const getSignedUploadURL = async function (ctx: Ctx) {
     try {
       const s3 = new AWS.S3({
         region: awsRegion,
+        endpoint: datasource?.config?.endpoint as string,
         accessKeyId: datasource?.config?.accessKeyId as string,
         secretAccessKey: datasource?.config?.secretAccessKey as string,
         apiVersion: "2006-03-01",
@@ -324,7 +320,13 @@ export const getSignedUploadURL = async function (ctx: Ctx) {
       })
       const params = { Bucket: bucket, Key: key }
       signedUrl = s3.getSignedUrl("putObject", params)
+      if (datasource?.config?.endpoint) {
+        publicUrl = `${datasource.config.endpoint}/${bucket}/${key}`
+      }
+      else {
         publicUrl = `https://${bucket}.s3.${awsRegion}.amazonaws.com/${key}`
+      }
+
     } catch (error: any) {
       ctx.throw(400, error)
     }