luci2: add L.toColor(), L.parseIPv4(), L.parseIPv6() and L.isNetmask() helper

diff --git a/luci2/htdocs/luci2/luci2.js b/luci2/htdocs/luci2/luci2.js
index 95d3516e10c7b2e63ab997eafcd58695f8558028..ea64074c5b21df9a2dba2b832c2096a6b8b37da3 100644 (file)
--- a/luci2/htdocs/luci2/luci2.js
+++ b/luci2/htdocs/luci2/luci2.js
@@ -485,6 +485,152 @@ function LuCI2()
                return n;
        };
 
+       this.toColor = function(str)
+       {
+               if (typeof(str) != 'string' || str.length == 0)
+                       return '#CCCCCC';
+
+               if (str == 'wan')
+                       return '#F09090';
+               else if (str == 'lan')
+                       return '#90F090';
+
+               var i = 0, hash = 0;
+
+               while (i < str.length)
+                       hash = str.charCodeAt(i++) + ((hash << 5) - hash);
+
+               var r = (hash & 0xFF) % 128;
+               var g = ((hash >> 8) & 0xFF) % 128;
+
+               var min = 0;
+               var max = 128;
+
+               if ((r + g) < 128)
+                       min = 128 - r - g;
+               else
+                       max = 255 - r - g;
+
+               var b = min + (((hash >> 16) & 0xFF) % (max - min));
+
+               return '#%02X%02X%02X'.format(0xFF - r, 0xFF - g, 0xFF - b);
+       };
+
+       this.parseIPv4 = function(str)
+       {
+               if ((typeof(str) != 'string' && !(str instanceof String)) ||
+                   !str.match(/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/))
+                       return undefined;
+
+               var num = [ ];
+               var parts = str.split(/\./);
+
+               for (var i = 0; i < parts.length; i++)
+               {
+                       var n = parseInt(parts[i], 10);
+                       if (isNaN(n) || n > 255)
+                               return undefined;
+
+                       num.push(n);
+               }
+
+               return num;
+       };
+
+       this.parseIPv6 = function(str)
+       {
+               if ((typeof(str) != 'string' && !(str instanceof String)) ||
+                   !str.match(/^[a-fA-F0-9:]+(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})?$/))
+                       return undefined;
+
+               var parts = str.split(/::/);
+               if (parts.length == 0 || parts.length > 2)
+                       return undefined;
+
+               var lnum = [ ];
+               if (parts[0].length > 0)
+               {
+                       var left = parts[0].split(/:/);
+                       for (var i = 0; i < left.length; i++)
+                       {
+                               var n = parseInt(left[i], 16);
+                               if (isNaN(n))
+                                       return undefined;
+
+                               lnum.push((n / 256) >> 0);
+                               lnum.push(n % 256);
+                       }
+               }
+
+               var rnum = [ ];
+               if (parts.length > 1 && parts[1].length > 0)
+               {
+                       var right = parts[1].split(/:/);
+
+                       for (var i = 0; i < right.length; i++)
+                       {
+                               if (right[i].indexOf('.') > 0)
+                               {
+                                       var addr = L.parseIPv4(right[i]);
+                                       if (!addr)
+                                               return undefined;
+
+                                       rnum.push.apply(rnum, addr);
+                                       continue;
+                               }
+
+                               var n = parseInt(right[i], 16);
+                               if (isNaN(n))
+                                       return undefined;
+
+                               rnum.push((n / 256) >> 0);
+                               rnum.push(n % 256);
+                       }
+               }
+
+               if (rnum.length > 0 && (lnum.length + rnum.length) > 15)
+                       return undefined;
+
+               var num = [ ];
+
+               num.push.apply(num, lnum);
+
+               for (var i = 0; i < (16 - lnum.length - rnum.length); i++)
+                       num.push(0);
+
+               num.push.apply(num, rnum);
+
+               if (num.length > 16)
+                       return undefined;
+
+               return num;
+       };
+
+       this.isNetmask = function(addr)
+       {
+               if (!$.isArray(addr))
+                       return false;
+
+               var c;
+
+               for (c = 0; (c < addr.length) && (addr[c] == 255); c++);
+
+               if (c == addr.length)
+                       return true;
+
+               if ((addr[c] == 254) || (addr[c] == 252) || (addr[c] == 248) ||
+                       (addr[c] == 240) || (addr[c] == 224) || (addr[c] == 192) ||
+                       (addr[c] == 128) || (addr[c] == 0))
+               {
+                       for (c++; (c < addr.length) && (addr[c] == 0); c++);
+
+                       if (c == addr.length)
+                               return true;
+               }
+
+               return false;
+       };
+
        this.globals = {
                timeout:  15000,
                resource: '/luci2',