🔀 Merge branch 'release/v82'

[Sone.git] / src / main / kotlin / net / pterodactylus / sone / web / page / PageToadlet.kt

diff --git a/src/main/kotlin/net/pterodactylus/sone/web/page/PageToadlet.kt b/src/main/kotlin/net/pterodactylus/sone/web/page/PageToadlet.kt
new file mode 100644 (file)
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--- /dev/null
+++ b/src/main/kotlin/net/pterodactylus/sone/web/page/PageToadlet.kt
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+/*
+ * Sone - PageToadlet.kt - Copyright © 2010–2020 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sone.web.page
+
+import freenet.client.HighLevelSimpleClient
+import freenet.clients.http.LinkEnabledCallback
+import freenet.clients.http.LinkFilterExceptedToadlet
+import freenet.clients.http.Toadlet
+import freenet.clients.http.ToadletContext
+import freenet.support.MultiValueTable
+import freenet.support.api.HTTPRequest
+import net.pterodactylus.sone.utils.use
+import net.pterodactylus.util.web.Method
+import net.pterodactylus.util.web.Page
+import net.pterodactylus.util.web.Response
+import java.net.URI
+
+/**
+ * [Toadlet] implementation that is wrapped around a [Page].
+ */
+class PageToadlet(
+               highLevelSimpleClient: HighLevelSimpleClient,
+               val menuName: String?,
+               private val page: Page<FreenetRequest>,
+               private val pathPrefix: String
+) : Toadlet(highLevelSimpleClient), LinkEnabledCallback, LinkFilterExceptedToadlet {
+
+       override fun path() = pathPrefix + page.path
+
+       override fun handleMethodGET(uri: URI, httpRequest: HTTPRequest, toadletContext: ToadletContext) =
+                       handleRequest(FreenetRequest(uri, Method.GET, httpRequest, toadletContext))
+
+       fun handleMethodPOST(uri: URI?, httpRequest: HTTPRequest?, toadletContext: ToadletContext?) =
+                       handleRequest(FreenetRequest(uri!!, Method.POST, httpRequest!!, toadletContext!!))
+
+       private fun handleRequest(pageRequest: FreenetRequest) {
+               pageRequest.toadletContext.bucketFactory.makeBucket(-1).use { pageBucket ->
+                       pageBucket.outputStream.use { pageBucketOutputStream ->
+                               val pageResponse = page.handleRequest(pageRequest, Response(pageBucketOutputStream))
+                               // according to the javadoc, headers is allowed to return null but that’s stupid and it doesn’t do that.
+                               val headers = pageResponse.headers.fold(MultiValueTable<String, String>()) { headers, header ->
+                                       headers.apply {
+                                               header.forEach { put(header.name, it) }
+                                       }
+                               }
+                               with(pageResponse) {
+                                       writeReply(pageRequest.toadletContext, statusCode, contentType, statusText, headers, pageBucket)
+                               }
+                       }
+               }
+       }
+
+       override fun isEnabled(toadletContext: ToadletContext) =
+                       if (page is LinkEnabledCallback) {
+                               page.isEnabled(toadletContext)
+                       } else
+                               true
+
+       override fun isLinkExcepted(link: URI) =
+                       page is FreenetPage && page.isLinkExcepted(link)
+
+       override fun toString() = "${javaClass.name}[path=${path()},page=$page]"
+
+}