Enable CORS (again)

PerfectDreams · Sep 21, 2023 · 7a94e36 · 7a94e36
1 parent b58a5b9
commit 7a94e36
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diff --git a/backend/build.gradle.kts b/backend/build.gradle.kts
@@ -18,6 +18,7 @@ dependencies {
     implementation(libs.ktor.server.netty)
     implementation(libs.ktor.server.compression)
     implementation(libs.ktor.server.caching.headers)
+    implementation(libs.ktor.server.cors)
     implementation(libs.kotlinx.serialization.json)
 
     implementation(project(":common"))

diff --git a/backend/src/main/kotlin/net/perfectdreams/etherealgambi/backend/EtherealGambi.kt b/backend/src/main/kotlin/net/perfectdreams/etherealgambi/backend/EtherealGambi.kt
@@ -7,6 +7,7 @@ import io.ktor.server.engine.*
 import io.ktor.server.netty.*
 import io.ktor.server.plugins.cachingheaders.*
 import io.ktor.server.plugins.compression.*
+import io.ktor.server.plugins.cors.routing.*
 import io.ktor.server.routing.*
 import kotlinx.coroutines.runBlocking
 import kotlinx.coroutines.sync.Mutex
@@ -100,6 +101,19 @@ class EtherealGambi {
                 }
             }
 
+            // Useful for images in a JavaScript canvas, since by default you CAN'T manipulate external images in a Canvas
+            install(CORS) {
+                anyHost()
+                allowMethod(HttpMethod.Get)
+                allowMethod(HttpMethod.Post)
+                allowMethod(HttpMethod.Options)
+                allowMethod(HttpMethod.Put)
+                allowMethod(HttpMethod.Patch)
+                allowMethod(HttpMethod.Delete)
+                allowHeader(HttpHeaders.AccessControlAllowOrigin)
+                allowHeader(HttpHeaders.ContentType)
+            }
+
             routing {
                 for (route in routes) {
                     route.register(this)

diff --git a/settings.gradle.kts b/settings.gradle.kts
@@ -23,6 +23,7 @@ dependencyResolutionManagement {
             library("ktor-server-netty", "io.ktor", "ktor-server-netty").versionRef(ktor)
             library("ktor-server-compression", "io.ktor", "ktor-server-compression").versionRef(ktor)
             library("ktor-server-caching-headers", "io.ktor", "ktor-server-caching-headers").versionRef(ktor)
+            library("ktor-server-cors", "io.ktor", "ktor-server-cors").versionRef(ktor)
         }
     }
 }