src/main/kotlin/net/pterodactylus/sone/web/pages/UploadImagePage.kt

   1 package net.pterodactylus.sone.web.pages
   2
   3 import freenet.support.api.*
   4 import net.pterodactylus.sone.data.*
   5 import net.pterodactylus.sone.main.*
   6 import net.pterodactylus.sone.text.*
   7 import net.pterodactylus.sone.utils.*
   8 import net.pterodactylus.sone.web.*
   9 import net.pterodactylus.sone.web.page.*
  10 import net.pterodactylus.util.template.*
  11 import java.awt.image.*
  12 import java.io.*
  13 import javax.imageio.*
  14 import javax.inject.*
  15
  16 /**
  17  * Page implementation that lets the user upload an image.
  18  */
  19 @TemplatePath("/templates/invalid.html")
  20 @ToadletPath("uploadImage.html")
  21 class UploadImagePage @Inject constructor(webInterface: WebInterface, loaders: Loaders, templateRenderer: TemplateRenderer) :
  22                 LoggedInPage("Page.UploadImage.Title", webInterface, loaders, templateRenderer) {
  23
  24         override fun handleRequest(soneRequest: SoneRequest, currentSone: Sone, templateContext: TemplateContext) {
  25                 if (soneRequest.isPOST) {
  26                         val parentAlbum = soneRequest.parameters["parent"]!!.let(soneRequest.core::getAlbum) ?: throw RedirectException("noPermission.html")
  27                         if (parentAlbum.sone != currentSone) {
  28                                 throw RedirectException("noPermission.html")
  29                         }
  30                         val title = soneRequest.parameters["title", 200].emptyToNull ?: throw RedirectException("emptyImageTitle.html")
  31
  32                         val uploadedFile = soneRequest.httpRequest.getUploadedFile("image")
  33                         val bytes = uploadedFile.data.use { it.toByteArray() }
  34                         val bufferedImage = bytes.toImage()
  35                         if (bufferedImage == null) {
  36                                 templateContext["messages"] = soneRequest.l10n.getString("Page.UploadImage.Error.InvalidImage")
  37                                 return
  38                         }
  39
  40                         val temporaryImage = soneRequest.core.createTemporaryImage(bytes.mimeType, bytes)
  41                         soneRequest.core.createImage(currentSone, parentAlbum, temporaryImage).modify().apply {
  42                                 setWidth(bufferedImage.width)
  43                                 setHeight(bufferedImage.height)
  44                                 setTitle(title)
  45                                 setDescription(TextFilter.filter(soneRequest.headers["Host"], soneRequest.parameters["description", 4000]))
  46                         }.update()
  47                         throw RedirectException("imageBrowser.html?album=${parentAlbum.id}")
  48                 }
  49         }
  50
  51         private fun Bucket.toByteArray(): ByteArray = ByteArrayOutputStream(size().toInt()).use { outputStream ->
  52                 inputStream.copyTo(outputStream)
  53                 outputStream.toByteArray()
  54         }
  55
  56         private fun ByteArray.toImage(): BufferedImage? = ByteArrayInputStream(this).use {
  57                 ImageIO.read(it)
  58         }
  59
  60         private val ByteArray.mimeType
  61                 get() = ByteArrayInputStream(this).use {
  62                         ImageIO.createImageInputStream(it).use {
  63                                 ImageIO.getImageReaders(it).asSequence()
  64                                                 .firstOrNull()?.originatingProvider?.mimeTypes?.firstOrNull()
  65                                                 ?: UNKNOWN_MIME_TYPE
  66                         }
  67                 }
  68
  69 }
  70
  71 private const val UNKNOWN_MIME_TYPE = "application/octet-stream"