From 7d7fb323da25096360637c9b5ed72d0b42ce2bc7 Mon Sep 17 00:00:00 2001
From: signalhunter <boom@flyingpackets.net>
Date: Sat, 22 Aug 2020 00:57:15 -0400
Subject: [PATCH 1/3] Add trust manager prototype

---
 sys/apps/system/trust.lua | 44 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 sys/apps/system/trust.lua

diff --git a/sys/apps/system/trust.lua b/sys/apps/system/trust.lua
new file mode 100644
index 0000000..c795ab8
--- /dev/null
+++ b/sys/apps/system/trust.lua
@@ -0,0 +1,44 @@
+local UI   = require("opus.ui")
+local Util = require("opus.util")
+local SHA  = require('opus.crypto.sha2')
+
+local function split(s)
+  local b = ""
+  for i = 1, #s, 5 do
+    b = b .. s:sub(i, i+4)
+    if i ~= #s-4 then
+      b = b .. "-"
+    end
+  end
+  return b
+end
+
+return UI.Tab {
+  title = 'Trust',
+  description = 'Manage trusted devices',
+  grid = UI.Grid {
+    x = 2, y = 2, ex = -2, ey = -3,
+    autospace = true,
+    sortColumn = 'id',
+    columns = {
+      { heading = 'Computer ID', key = 'id'},
+      { heading = 'Identity', key = 'pkey'}
+    }
+  },
+  statusBar = UI.StatusBar { values = 'double-click to revoke trust' },
+  reload = function(self)
+    local values = {}
+    for k,v in pairs(Util.readTable('usr/.known_hosts') or {}) do
+      table.insert(values, {
+        id = k,
+        pkey = split(SHA.compute(v):sub(-20):upper()) -- Obfuscate private key for visual ident
+      })
+    end
+    self.grid:setValues(values)
+    self.grid:setIndex(1)
+  end,
+  enable = function(self)
+    self:reload()
+    UI.Tab.enable(self)
+  end
+}
\ No newline at end of file
-- 
2.49.1


From 17391c1e000172418533a4eb42890d819570da14 Mon Sep 17 00:00:00 2001
From: signalhunter <boom@flyingpackets.net>
Date: Sat, 22 Aug 2020 03:11:29 -0400
Subject: [PATCH 2/3] Made the prototype functional

---
 sys/apps/system/trust.lua | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/sys/apps/system/trust.lua b/sys/apps/system/trust.lua
index c795ab8..bb6a703 100644
--- a/sys/apps/system/trust.lua
+++ b/sys/apps/system/trust.lua
@@ -40,5 +40,14 @@ return UI.Tab {
   enable = function(self)
     self:reload()
     UI.Tab.enable(self)
+  end,
+  eventHandler = function(self, event)
+    if event.type == 'grid_select' then
+      local hosts = Util.readTable('usr/.known_hosts')
+      hosts[event.selected.id] = nil
+      Util.writeTable('usr/.known_hosts', hosts)
+      self:reload()
+      return true
+    end
   end
 }
\ No newline at end of file
-- 
2.49.1


From 38ae5bcf787fd6d9c280136ff72716b439bc24c3 Mon Sep 17 00:00:00 2001
From: signalhunter <boom@flyingpackets.net>
Date: Sat, 22 Aug 2020 03:45:35 -0400
Subject: [PATCH 3/3] Better event handling

---
 sys/apps/system/trust.lua | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sys/apps/system/trust.lua b/sys/apps/system/trust.lua
index bb6a703..399fb8e 100644
--- a/sys/apps/system/trust.lua
+++ b/sys/apps/system/trust.lua
@@ -47,7 +47,9 @@ return UI.Tab {
       hosts[event.selected.id] = nil
       Util.writeTable('usr/.known_hosts', hosts)
       self:reload()
-      return true
+    else
+      return UI.Tab.eventHandler(self, event)
     end
+    return true
   end
 }
\ No newline at end of file
-- 
2.49.1