Pass <local> to target browser as-is. Avoid <local> in default config.

See the added comments as well as #443 for discussion.

Newly created proxy profiles will have 127.0.0.1, ::1 and localhost in
bypass list by default, instead of <local> in hope that fewer users
will be trapped in the IPv6 literals gotcha.

omega-pac/src/conditions.coffee

@@ -352,7 +352,16 @@ module.exports = exports =
         return false if cache.ip? and not @match cache.ip, request
         if cache.host?
           if cache.host == '<local>'
-            return request.host in @localHosts
+            # https://code.google.com/p/chromium/codesearch#chromium/src/net/proxy/proxy_bypass_rules.cc&sq=package:chromium&l=67
+            # We align with Chromium's behavior of bypassing 127.0.0.1, ::1 as
+            # well as any host without dots.
+            #
+            # This, however, will match IPv6 literals who also don't have dots.
+            return (
+              request.host == '127.0.0.1' or
+              request.host == '::1' or
+              request.host.indexOf('.') < 0
+            )
           else
             return false if not cache.host.test(request.host)
         return false if cache.url? and !cache.url.test(request.url)
@@ -370,12 +379,22 @@ module.exports = exports =
           )
           return new U2.AST_Binary(
             left: new U2.AST_Binary(
-              left: hostEquals '[::1]'
+              left: hostEquals '127.0.0.1'
               operator: '||'
-              right: hostEquals 'localhost'
+              right: hostEquals '::1'
             )
             operator: '||'
-            right: hostEquals '127.0.0.1'
+            right: new U2.AST_Binary(
+              left: new U2.AST_Call(
+                expression: new U2.AST_Dot(
+                  expression: new U2.AST_SymbolRef name: 'host'
+                  property: 'indexOf'
+                )
+                args: [new U2.AST_String value: '.']
+              )
+              operator: '<'
+              right: new U2.AST_Number value: 0
+            )
           )
         if cache.scheme?
           conditions.push new U2.AST_Binary(

omega-pac/src/profiles.coffee

@@ -237,10 +237,20 @@ module.exports = exports =
     'FixedProfile':
       includable: true
       create: (profile) ->
-        profile.bypassList ?= [{
+        profile.bypassList ?= [
+          {
             conditionType: 'BypassCondition'
-          pattern: '<local>'
-        }]
+            pattern: '127.0.0.1'
+          }
+          {
+            conditionType: 'BypassCondition'
+            pattern: '::1'
+          }
+          {
+            conditionType: 'BypassCondition'
+            pattern: 'localhost'
+          }
+        ]
       match: (profile, request) ->
         if profile.bypassList
           for cond in profile.bypassList

omega-pac/test/conditions.coffee

@@ -31,6 +31,7 @@ describe 'Conditions', ->
       printCond = JSON.stringify(condition)
       printCompiled = if compiled then 'COMPILED ' else ''
       printMatch = if should_match then 'to match' else 'not to match'
+      console.log(request)
       msg = ("expect #{printCompiled}condition #{printCond} " +
              "#{printMatch} request #{o_request}")
       chai.assert(false, msg)
@@ -219,6 +220,31 @@ describe 'Conditions', ->
         prefixLength: 0
       })
 
+    it 'should match 127.0.0.1 when <local> is used', ->
+      cond =
+        conditionType: 'BypassCondition'
+        pattern: '<local>'
+      testCond(cond, 'http://127.0.0.1:8080/', 'match')
+
+    it 'should match [::1] when <local> is used', ->
+      cond =
+        conditionType: 'BypassCondition'
+        pattern: '<local>'
+      testCond(cond, 'http://[::1]:8080/', 'match')
+
+    it 'should match any host without dots when <local> is used', ->
+      cond =
+        conditionType: 'BypassCondition'
+        pattern: '<local>'
+      testCond(cond, 'http://localhost:8080/', 'match')
+      testCond(cond, 'http://intranet:8080/', 'match')
+      testCond(cond, 'http://foobar/', 'match')
+      testCond(cond, 'http://example.com/', not 'match')
+
+      # Intended, see the corresponding code and comments for the reasoning.
+      testCond(cond, 'http://[::ffff:eeee]/', 'match')
+      testCond(cond, 'http://[::1.2.3.4]/', not 'match')
+
   describe 'IpCondition', ->
     # IpCondition requires isInNetEx or isInNet function provided by the PAC
     # runner, which is not available in the unit test. So We can't use testCond

omega-target-chromium-extension/src/options.coffee

@@ -108,10 +108,6 @@ class ChromeOptions extends OmegaTarget.Options
     if config['mode'] != 'direct'
       rules['bypassList'] = bypassList = []
       for rule in profile.bypassList
-        if rule.pattern == '<local>'
-          for host in OmegaPac.Conditions.localHosts
-            bypassList.push(host)
-        else
         bypassList.push(rule.pattern)
       config['rules'] = rules
     return config

omega-target-chromium-extension/src/upgrade.coffee

@@ -122,8 +122,18 @@ module.exports = (oldOptions, i18n) ->
       exampleFixedProfileName = 'Example Profile'
       options[OmegaPac.Profiles.nameAsKey(exampleFixedProfileName)] =
         bypassList: [
-          pattern: "<local>"
+          {
+            pattern: "127.0.0.1"
             conditionType: "BypassCondition"
+          }
+          {
+            pattern: "::1"
+            conditionType: "BypassCondition"
+          }
+          {
+            pattern: "localhost"
+            conditionType: "BypassCondition"
+          }
         ]
         profileType: "FixedProfile"
         name: exampleFixedProfileName

omega-target/src/default_options.coffee

@@ -10,8 +10,18 @@ module.exports = ->
   "-downloadInterval": 1440
   "+proxy":
     bypassList: [
-      pattern: "<local>"
+      {
+        pattern: "127.0.0.1"
         conditionType: "BypassCondition"
+      }
+      {
+        pattern: "::1"
+        conditionType: "BypassCondition"
+      }
+      {
+        pattern: "localhost"
+        conditionType: "BypassCondition"
+      }
     ]
     profileType: "FixedProfile"
     name: "proxy"