src/main/kotlin/net/pterodactylus/sone/freenet/wot/PluginWebOfTrustConnector.kt

   1 /*
   2  * Sone - PluginWebOfTrustConnector.kt - Copyright © 2010–2020 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.sone.freenet.wot
  19
  20 import com.google.inject.*
  21 import freenet.support.*
  22 import kotlinx.coroutines.*
  23 import net.pterodactylus.sone.freenet.*
  24 import net.pterodactylus.sone.freenet.plugin.*
  25 import java.lang.String.*
  26 import java.util.logging.*
  27 import java.util.logging.Logger
  28 import java.util.logging.Logger.*
  29
  30 /**
  31  * Connector for the Web of Trust plugin.
  32  */
  33 class PluginWebOfTrustConnector @Inject constructor(private val pluginConnector: PluginConnector) : WebOfTrustConnector {
  34
  35         private val logger: Logger = getLogger(PluginWebOfTrustConnector::class.java.name)
  36
  37         @Throws(PluginException::class)
  38         override fun loadAllOwnIdentities(): Set<OwnIdentity> =
  39                         performRequest(SimpleFieldSetBuilder().put("Message", "GetOwnIdentities").get())
  40                                         .fields
  41                                         .parseIdentities { parseOwnIdentity(it) }
  42
  43         @Throws(PluginException::class)
  44         override fun loadTrustedIdentities(ownIdentity: OwnIdentity, context: String?): Set<Identity> =
  45                         performRequest(SimpleFieldSetBuilder().put("Message", "GetIdentitiesByScore").put("Truster", ownIdentity.id).put("Selection", "+").put("Context", context ?: "").put("WantTrustValues", "true").get())
  46                                         .fields
  47                                         .parseIdentities { parseTrustedIdentity(it, ownIdentity) }
  48
  49         @Throws(PluginException::class)
  50         override fun addContext(ownIdentity: OwnIdentity, context: String) {
  51                 performRequest(SimpleFieldSetBuilder().put("Message", "AddContext").put("Identity", ownIdentity.id).put("Context", context).get())
  52         }
  53
  54         @Throws(PluginException::class)
  55         override fun removeContext(ownIdentity: OwnIdentity, context: String) {
  56                 performRequest(SimpleFieldSetBuilder().put("Message", "RemoveContext").put("Identity", ownIdentity.id).put("Context", context).get())
  57         }
  58
  59         override fun setProperty(ownIdentity: OwnIdentity, name: String, value: String) {
  60                 performRequest(SimpleFieldSetBuilder().put("Message", "SetProperty").put("Identity", ownIdentity.id).put("Property", name).put("Value", value).get())
  61         }
  62
  63         override fun removeProperty(ownIdentity: OwnIdentity, name: String) {
  64                 performRequest(SimpleFieldSetBuilder().put("Message", "RemoveProperty").put("Identity", ownIdentity.id).put("Property", name).get())
  65         }
  66
  67         override fun ping() {
  68                 performRequest(SimpleFieldSetBuilder().put("Message", "Ping").get())
  69         }
  70
  71         private fun performRequest(fields: SimpleFieldSet): PluginReply {
  72                 logger.log(Level.FINE, format("Sending FCP Request: %s", fields.get("Message")))
  73                 return runBlocking {
  74                         pluginConnector.sendRequest(WOT_PLUGIN_NAME, fields).also {
  75                                 logger.log(Level.FINEST, format("Received FCP Response for %s: %s", fields.get("Message"), it.fields.get("Message")))
  76                                 if ("Error" == it.fields.get("Message")) {
  77                                         throw PluginException("Could not perform request for " + fields.get("Message"))
  78                                 }
  79                         }
  80                 }
  81         }
  82
  83 }
  84
  85 private const val WOT_PLUGIN_NAME = "plugins.WebOfTrust.WebOfTrust"
  86
  87 private fun <I> SimpleFieldSet.parseIdentities(parser: SimpleFieldSet.(Int) -> I) =
  88                 scanPrefix { "Identity$it" }
  89                                 .map { parser(this, it) }
  90                                 .toSet()
  91
  92 private fun SimpleFieldSet.parseOwnIdentity(index: Int) =
  93                 DefaultOwnIdentity(get("Identity$index"), get("Nickname$index"), get("RequestURI$index"), get("InsertURI$index"))
  94                                 .setContextsAndProperties(this@parseOwnIdentity, index)
  95
  96 private fun SimpleFieldSet.parseTrustedIdentity(index: Int, ownIdentity: OwnIdentity) =
  97                 DefaultIdentity(get("Identity$index"), get("Nickname$index"), get("RequestURI$index"))
  98                                 .setContextsAndProperties(this@parseTrustedIdentity, index)
  99                                 .apply { setTrust(ownIdentity, this@parseTrustedIdentity.parseTrust(index.toString())) }
 100
 101 private fun <I : Identity> I.setContextsAndProperties(simpleFieldSet: SimpleFieldSet, index: Int) = apply {
 102         contexts = simpleFieldSet.contexts("Contexts$index.")
 103         properties = simpleFieldSet.properties("Properties$index.")
 104 }
 105
 106 private fun SimpleFieldSet.parseTrust(index: String = "") =
 107                 Trust(get("Trust$index")?.toIntOrNull(), get("Score$index")?.toIntOrNull(), get("Rank$index")?.toIntOrNull())
 108
 109 private fun SimpleFieldSet.contexts(prefix: String) =
 110                 scanPrefix { "${prefix}Context$it" }
 111                                 .map { get("${prefix}Context$it") }
 112                                 .toSet()
 113
 114 private fun SimpleFieldSet.properties(prefix: String) =
 115                 scanPrefix { "${prefix}Property${it}.Name" }
 116                                 .map { get("${prefix}Property${it}.Name") to get("${prefix}Property${it}.Value") }
 117                                 .toMap()
 118
 119 private fun SimpleFieldSet.scanPrefix(prefix: (Int) -> String) =
 120                 generateSequence(0, Int::inc)
 121                                 .takeWhile { get(prefix(it)) != null }