normalize nijie popup urls (fixes #3153)

app/logical/sources/strategies/nijie.rb

@@ -5,6 +5,10 @@ module Sources
         url =~ /^https?:\/\/(?:.+?\.)?nijie\.info/
       end
 
+      def initialize(url, referer_url=nil)
+        super(normalize_url(url), normalize_url(referer_url))
+      end
+
       def referer_url
         if @referer_url =~ /nijie\.info\/view\.php.+id=\d+/ && @url =~ /pic\d+\.nijie.info\/nijie_picture\//
           @referer_url
@@ -23,13 +27,13 @@ module Sources
       end
 
       def get
-        page = agent.get(url)
+        page = agent.get(referer_url)
 
         if page.search("div#header-login-container").any?
           # Session cache is invalid, clear it and log in normally.
           Cache.delete("nijie-session")
           @agent = nil
-          page = agent.get(url)
+          page = agent.get(referer_url)
         end
 
         @artist_name, @profile_url = get_profile_from_page(page)
@@ -79,6 +83,14 @@ module Sources
         end
       end
 
+      def normalize_url(url)
+        if url =~ %r!https?://nijie\.info/view_popup\.php.+id=(\d+)!
+          return "http://nijie.info/view.php?id=#{$1}"
+        else
+          return url
+        end
+      end
+
       def agent
         @agent ||= begin
           mech = Mechanize.new

test/unit/sources/nijie_test.rb

@@ -25,6 +25,25 @@ module Sources
       end
     end
 
+    context "The source site for a nijie referer url" do
+      setup do
+        @site = Sources::Site.new("http://pic03.nijie.info/nijie_picture/728995_20170505014820_0.jpg", referer_url: "https://nijie.info/view_popup.php?id=213043")
+        @site.get
+      end
+
+      should "get the image url" do
+        assert_equal("http://pic03.nijie.info/nijie_picture/728995_20170505014820_0.jpg", @site.image_url)
+      end
+
+      should "get the profile" do
+        assert_equal("http://nijie.info/members.php?id=728995", @site.profile_url)
+      end
+
+      should "get the artist name" do
+        assert_equal("莚", @site.artist_name)
+      end
+    end
+
     context "The source site for a nijie popup" do
       setup do
         @site = Sources::Site.new("https://nijie.info/view_popup.php?id=213043")
@@ -42,10 +61,6 @@ module Sources
       should "get the artist name" do
         assert_equal("莚", @site.artist_name)
       end
-
-      should "get the tags" do
-        assert_equal([["眼鏡", "http://nijie.info/search.php?word=%E7%9C%BC%E9%8F%A1"], ["リトルウィッチアカデミア", "http://nijie.info/search.php?word=%E3%83%AA%E3%83%88%E3%83%AB%E3%82%A6%E3%82%A3%E3%83%83%E3%83%81%E3%82%A2%E3%82%AB%E3%83%87%E3%83%9F%E3%82%A2"], ["アーシュラ先生", "http://nijie.info/search.php?word=%E3%82%A2%E3%83%BC%E3%82%B7%E3%83%A5%E3%83%A9%E5%85%88%E7%94%9F"]], @site.tags)
-      end
     end
   end
 end