Add support for more complex passwords used in URL configuration

userinfo part of URI allows to use percent-encoded characters, which should be decoded.
It is important in cases when the password is randomly-generated and includes characters which are allowed as influxdb
password but are reserved characters in URI.

Author: swistak35

lib/influxdb/config.rb

@@ -148,8 +148,8 @@ def opts_from_non_params(url)
       {}.tap do |o|
         o[:host]     = url.host        if url.host
         o[:port]     = url.port        if url.port
-        o[:username] = url.user        if url.user
-        o[:password] = url.password    if url.password
+        o[:username] = URI.decode_www_form_component(url.user)        if url.user
+        o[:password] = URI.decode_www_form_component(url.password)    if url.password
         o[:database] = url.path[1..-1] if url.path.length > 1
         o[:use_ssl]  = url.scheme == "https".freeze
 

spec/influxdb/config_spec.rb

@@ -159,6 +159,15 @@
       expect(conf).not_to be_async
     end
 
+    context "with encoded values" do
+      let(:url) { "https://weird%24user:weird%25pass@influx.example.com:8765/testdb" }
+
+      it "decode encoded values" do
+        expect(conf.username).to eq "weird$user"
+        expect(conf.password).to eq "weird%pass"
+      end
+    end
+
     context "UDP" do
       let(:url) { "udp://test.localhost:2345?discard_write_errors=1" }
       specify { expect(conf).to be_udp }