From a2d4c76879dc8c1aa10befd838f309c2e6daae15 Mon Sep 17 00:00:00 2001
From: cel <cel@f/6sQ6d2CMxRUhLpspgGIulDxDCwYD7DzFzPNr7u5AU=.ed25519>
Date: Fri, 1 Feb 2019 19:09:25 -1000
Subject: Support sbot built-in unboxing

This allows rendering private messages without the ssb-private plugin
or old scuttlebot built-in private plugin

/private is removed from default nav if there is no ssb-private plugin,
because it emulates private.read by filtering the main log,
which is inefficient/slow.
---
 lib/app.js  | 45 ++++++++++++++++++++++++++++++++++-----------
 lib/util.js |  4 ++--
 2 files changed, 36 insertions(+), 13 deletions(-)

(limited to 'lib')

diff --git a/lib/app.js b/lib/app.js
index 1ca864e..3847247 100644
--- a/lib/app.js
+++ b/lib/app.js
@@ -24,6 +24,7 @@ var path = require('path')
 var fs = require('fs')
 var mkdirp = require('mkdirp')
 var Base64URL = require('base64-url')
+var ssbKeys = require('ssb-keys')
 
 var zeros = new Buffer(24); zeros.fill(0)
 
@@ -69,10 +70,7 @@ function App(sbot, config) {
   this.getMsgOoo = memo({cache: this.msgCache}, this.getMsgOoo)
   this.getAbout = memo({cache: this.aboutCache = lru(500)},
     this._getAbout.bind(this))
-  this.unboxContent = memo({cache: lru(100)}, function(value, cb){
-    if (!sbot.private || !sbot.private.unbox) return cb(new Error('missing sbot.private.unbox'))
-    sbot.private.unbox(value, cb)
-  })
+  this.unboxContent = memo({cache: lru(100)}, this.unboxContent.bind(this))
   this.reverseNameCache = lru(500)
   this.reverseEmojiNameCache = lru(500)
   this.getBlobSize = memo({cache: this.blobSizeCache = lru(100)},
@@ -96,7 +94,7 @@ function App(sbot, config) {
   this.navLinks = conf.nav || [
     'new',
     'public',
-    'private',
+    this.sbot.private && 'private',
     'mentions',
     'peers',
     this.sbot.status && 'status',
@@ -144,6 +142,22 @@ var logPrefix = '[' + pkg.name + ']'
 App.prototype.log = console.log.bind(console, logPrefix)
 App.prototype.error = console.error.bind(console, logPrefix)
 
+App.prototype.unboxContent = function (content, cb) {
+  if (this.sbot.private && this.sbot.private.unbox) return this.sbot.private.unbox(content, cb)
+  if (typeof content !== 'string') return cb(new TypeError('content must be string'))
+  // Missing ssb-private and privat key
+  var keys = this.config.keys || {}
+  if (!keys.private) {
+    // Missing ssb-private and private key, so cannot decrypt here.
+    // ssb-server may do decryption anyway, with private:true RPC option.
+    return cb(null, null)
+  }
+  var data
+  try { data = ssbKeys.unbox(content, this.config.keys.private) }
+  catch(e) { return cb(e) }
+  cb(null, data)
+}
+
 App.prototype.unboxContentWithKey = function (content, key, cb) {
   if (!key) return this.unboxContent(content, cb)
   var data
@@ -205,6 +219,7 @@ App.prototype.advancedSearch = function (opts) {
         dest: opts.dest,
         source: opts.source || undefined,
         reverse: true,
+        meta: false,
       })
     : opts.source ?
       this.sbotCreateUserStream({
@@ -440,8 +455,12 @@ function sbotGet(sbot, id, cb) {
   // ssb-ooo@1.0.1 (a50da3928500f3ac0fbead0a1b335a3dd5bbc096): raw=true
   // ssb-ooo@1.1.0 (f7302d12e56d566b84205bbc0c8b882ae6fd9b12): ooo=false
   if (sbot.ooo) {
-    sbot.get({id: id, raw: true, ooo: false}, cb)
+    sbot.get({id: id, raw: true, ooo: false, private: true}, cb)
   } else {
+    if (!sbot.private) {
+      // if no sbot.private, assume we have newer sbot that supports private:true
+      return sbot.get({id: id, private: true}, cb)
+    }
     sbot.get(id, cb)
   }
 }
@@ -541,7 +560,7 @@ App.prototype.isMuted = function (id, cb) {
   var self = this
   pull(
     self.sbot.links({source: self.sbot.id, dest: id, rel: 'contact', reverse: true,
-      values: true}),
+      values: true, meta: false}), // meta:false to emulate private:true
     pull.filter(function (msg) {
       return msg && msg.value && typeof msg.value.content === 'string'
     }),
@@ -693,9 +712,10 @@ App.prototype.streamEmojis = function () {
         rel: 'mentions',
         source: this.sbot.id,
         dest: '&',
-        values: true
+        values: true,
+        meta: false // emulate private:true
       }),
-      this.sbot.links({rel: 'mentions', dest: '&', values: true})
+      this.sbot.links({rel: 'mentions', dest: '&', values: true, meta: false})
     ]),
     this.unboxMessages(),
     pull.map(function (msg) { return msg.value.content.mentions }),
@@ -777,7 +797,7 @@ App.prototype.streamPrivate = function (opts) {
     return this.filter(this.sbot.private, opts, {})
 
   return pull(
-    this.createLogStream(u.mergeOpts(opts)),
+    this.createLogStream(u.mergeOpts(opts, {private: true})),
     pull.filter(u.isMsgEncrypted),
     this.unboxMessages(),
     pull.filter(u.isMsgReadable)
@@ -1218,7 +1238,8 @@ App.prototype.getLineComments = function (opts, cb) {
       self.sbot.links({
         dest: updateId,
         rel: 'updateId',
-        values: true
+        values: true,
+        meta: false,
       }),
       pull.filter(function (msg) {
         var c = msg && msg.value && msg.value.content
@@ -1276,6 +1297,7 @@ App.prototype.getThread = function (msg) {
       ]
     }) : this.sbotLinks({
       dest: msg.key,
+      meta: false,
       values: true
     })
   ])
@@ -1288,6 +1310,7 @@ App.prototype.getLinks = function (id) {
     ]
   }) : this.sbotLinks({
     dest: id,
+    meta: false,
     values: true
   })
 }
diff --git a/lib/util.js b/lib/util.js
index 52c608b..5bd5f11 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -142,8 +142,8 @@ u.isMsgReadable = function (msg) {
 }
 
 u.isMsgEncrypted = function (msg) {
-  var c = msg && msg.value.content
-  return typeof c === 'string'
+  var value = msg && msg.value
+  return value && (value.private || typeof value.content === 'string')
 }
 
 u.pullConcat = function (cb) {
-- 
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