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 class UploadImagePage @Inject constructor(webInterface: WebInterface, loaders: Loaders, templateRenderer: TemplateRenderer):
  21                 LoggedInPage("uploadImage.html", "Page.UploadImage.Title", webInterface, loaders, templateRenderer) {
  22
  23         override fun handleRequest(soneRequest: SoneRequest, currentSone: Sone, templateContext: TemplateContext) {
  24                 if (soneRequest.isPOST) {
  25                         val parentAlbum = soneRequest.parameters["parent"]!!.let(soneRequest.core::getAlbum) ?: throw RedirectException("noPermission.html")
  26                         if (parentAlbum.sone != currentSone) {
  27                                 throw RedirectException("noPermission.html")
  28                         }
  29                         val title = soneRequest.parameters["title", 200].emptyToNull ?: throw RedirectException("emptyImageTitle.html")
  30
  31                         val uploadedFile = soneRequest.httpRequest.getUploadedFile("image")
  32                         val bytes = uploadedFile.data.use { it.toByteArray() }
  33                         val bufferedImage = bytes.toImage()
  34                         if (bufferedImage == null) {
  35                                 templateContext["messages"] = soneRequest.l10n.getString("Page.UploadImage.Error.InvalidImage")
  36                                 return
  37                         }
  38
  39                         val temporaryImage = soneRequest.core.createTemporaryImage(bytes.mimeType, bytes)
  40                         soneRequest.core.createImage(currentSone, parentAlbum, temporaryImage).modify().apply {
  41                                 setWidth(bufferedImage.width)
  42                                 setHeight(bufferedImage.height)
  43                                 setTitle(title)
  44                                 setDescription(TextFilter.filter(soneRequest.headers["Host"], soneRequest.parameters["description", 4000]))
  45                         }.update()
  46                         throw RedirectException("imageBrowser.html?album=${parentAlbum.id}")
  47                 }
  48         }
  49
  50         private fun Bucket.toByteArray(): ByteArray = ByteArrayOutputStream(size().toInt()).use { outputStream ->
  51                 inputStream.copyTo(outputStream)
  52                 outputStream.toByteArray()
  53         }
  54
  55         private fun ByteArray.toImage(): BufferedImage? = ByteArrayInputStream(this).use {
  56                 ImageIO.read(it)
  57         }
  58
  59         private val ByteArray.mimeType get() = ByteArrayInputStream(this).use {
  60                 ImageIO.createImageInputStream(it).use {
  61                         ImageIO.getImageReaders(it).asSequence()
  62                                         .firstOrNull()?.originatingProvider?.mimeTypes?.firstOrNull()
  63                                         ?: UNKNOWN_MIME_TYPE
  64                 }
  65         }
  66
  67 }
  68
  69 private const val UNKNOWN_MIME_TYPE = "application/octet-stream"