Created
January 10, 2013 10:01
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通过Javascript和Email地址获取特定大小的Gavatar头像
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| $(document).ready(function(){ | |
| var MD5 = function (string) { | |
| function RotateLeft(lValue, iShiftBits) { | |
| return (lValue<<iShiftBits) | (lValue>>>(32-iShiftBits)); | |
| } | |
| function AddUnsigned(lX,lY) { | |
| var lX4,lY4,lX8,lY8,lResult; | |
| lX8 = (lX & 0x80000000); | |
| lY8 = (lY & 0x80000000); | |
| lX4 = (lX & 0x40000000); | |
| lY4 = (lY & 0x40000000); | |
| lResult = (lX & 0x3FFFFFFF)+(lY & 0x3FFFFFFF); | |
| if (lX4 & lY4) { | |
| return (lResult ^ 0x80000000 ^ lX8 ^ lY8); | |
| } | |
| if (lX4 | lY4) { | |
| if (lResult & 0x40000000) { | |
| return (lResult ^ 0xC0000000 ^ lX8 ^ lY8); | |
| } else { | |
| return (lResult ^ 0x40000000 ^ lX8 ^ lY8); | |
| } | |
| } else { | |
| return (lResult ^ lX8 ^ lY8); | |
| } | |
| } | |
| function F(x,y,z) { return (x & y) | ((~x) & z); } | |
| function G(x,y,z) { return (x & z) | (y & (~z)); } | |
| function H(x,y,z) { return (x ^ y ^ z); } | |
| function I(x,y,z) { return (y ^ (x | (~z))); } | |
| function FF(a,b,c,d,x,s,ac) { | |
| a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac)); | |
| return AddUnsigned(RotateLeft(a, s), b); | |
| }; | |
| function GG(a,b,c,d,x,s,ac) { | |
| a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac)); | |
| return AddUnsigned(RotateLeft(a, s), b); | |
| }; | |
| function HH(a,b,c,d,x,s,ac) { | |
| a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac)); | |
| return AddUnsigned(RotateLeft(a, s), b); | |
| }; | |
| function II(a,b,c,d,x,s,ac) { | |
| a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac)); | |
| return AddUnsigned(RotateLeft(a, s), b); | |
| }; | |
| function ConvertToWordArray(string) { | |
| var lWordCount; | |
| var lMessageLength = string.length; | |
| var lNumberOfWords_temp1=lMessageLength + 8; | |
| var lNumberOfWords_temp2=(lNumberOfWords_temp1-(lNumberOfWords_temp1 % 64))/64; | |
| var lNumberOfWords = (lNumberOfWords_temp2+1)*16; | |
| var lWordArray=Array(lNumberOfWords-1); | |
| var lBytePosition = 0; | |
| var lByteCount = 0; | |
| while ( lByteCount < lMessageLength ) { | |
| lWordCount = (lByteCount-(lByteCount % 4))/4; | |
| lBytePosition = (lByteCount % 4)*8; | |
| lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount)<<lBytePosition)); | |
| lByteCount++; | |
| } | |
| lWordCount = (lByteCount-(lByteCount % 4))/4; | |
| lBytePosition = (lByteCount % 4)*8; | |
| lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80<<lBytePosition); | |
| lWordArray[lNumberOfWords-2] = lMessageLength<<3; | |
| lWordArray[lNumberOfWords-1] = lMessageLength>>>29; | |
| return lWordArray; | |
| }; | |
| function WordToHex(lValue) { | |
| var WordToHexValue="",WordToHexValue_temp="",lByte,lCount; | |
| for (lCount = 0;lCount<=3;lCount++) { | |
| lByte = (lValue>>>(lCount*8)) & 255; | |
| WordToHexValue_temp = "0" + lByte.toString(16); | |
| WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length-2,2); | |
| } | |
| return WordToHexValue; | |
| }; | |
| function Utf8Encode(string) { | |
| string = string.replace(/\r\n/g,"\n"); | |
| var utftext = ""; | |
| for (var n = 0; n < string.length; n++) { | |
| var c = string.charCodeAt(n); | |
| if (c < 128) { | |
| utftext += String.fromCharCode(c); | |
| } | |
| else if((c > 127) && (c < 2048)) { | |
| utftext += String.fromCharCode((c >> 6) | 192); | |
| utftext += String.fromCharCode((c & 63) | 128); | |
| } | |
| else { | |
| utftext += String.fromCharCode((c >> 12) | 224); | |
| utftext += String.fromCharCode(((c >> 6) & 63) | 128); | |
| utftext += String.fromCharCode((c & 63) | 128); | |
| } | |
| } | |
| return utftext; | |
| }; | |
| var x=Array(); | |
| var k,AA,BB,CC,DD,a,b,c,d; | |
| var S11=7, S12=12, S13=17, S14=22; | |
| var S21=5, S22=9 , S23=14, S24=20; | |
| var S31=4, S32=11, S33=16, S34=23; | |
| var S41=6, S42=10, S43=15, S44=21; | |
| string = Utf8Encode(string); | |
| x = ConvertToWordArray(string); | |
| a = 0x67452301; b = 0xEFCDAB89; c = 0x98BADCFE; d = 0x10325476; | |
| for (k=0;k<x.length;k+=16) { | |
| AA=a; BB=b; CC=c; DD=d; | |
| a=FF(a,b,c,d,x[k+0], S11,0xD76AA478); | |
| d=FF(d,a,b,c,x[k+1], S12,0xE8C7B756); | |
| c=FF(c,d,a,b,x[k+2], S13,0x242070DB); | |
| b=FF(b,c,d,a,x[k+3], S14,0xC1BDCEEE); | |
| a=FF(a,b,c,d,x[k+4], S11,0xF57C0FAF); | |
| d=FF(d,a,b,c,x[k+5], S12,0x4787C62A); | |
| c=FF(c,d,a,b,x[k+6], S13,0xA8304613); | |
| b=FF(b,c,d,a,x[k+7], S14,0xFD469501); | |
| a=FF(a,b,c,d,x[k+8], S11,0x698098D8); | |
| d=FF(d,a,b,c,x[k+9], S12,0x8B44F7AF); | |
| c=FF(c,d,a,b,x[k+10],S13,0xFFFF5BB1); | |
| b=FF(b,c,d,a,x[k+11],S14,0x895CD7BE); | |
| a=FF(a,b,c,d,x[k+12],S11,0x6B901122); | |
| d=FF(d,a,b,c,x[k+13],S12,0xFD987193); | |
| c=FF(c,d,a,b,x[k+14],S13,0xA679438E); | |
| b=FF(b,c,d,a,x[k+15],S14,0x49B40821); | |
| a=GG(a,b,c,d,x[k+1], S21,0xF61E2562); | |
| d=GG(d,a,b,c,x[k+6], S22,0xC040B340); | |
| c=GG(c,d,a,b,x[k+11],S23,0x265E5A51); | |
| b=GG(b,c,d,a,x[k+0], S24,0xE9B6C7AA); | |
| a=GG(a,b,c,d,x[k+5], S21,0xD62F105D); | |
| d=GG(d,a,b,c,x[k+10],S22,0x2441453); | |
| c=GG(c,d,a,b,x[k+15],S23,0xD8A1E681); | |
| b=GG(b,c,d,a,x[k+4], S24,0xE7D3FBC8); | |
| a=GG(a,b,c,d,x[k+9], S21,0x21E1CDE6); | |
| d=GG(d,a,b,c,x[k+14],S22,0xC33707D6); | |
| c=GG(c,d,a,b,x[k+3], S23,0xF4D50D87); | |
| b=GG(b,c,d,a,x[k+8], S24,0x455A14ED); | |
| a=GG(a,b,c,d,x[k+13],S21,0xA9E3E905); | |
| d=GG(d,a,b,c,x[k+2], S22,0xFCEFA3F8); | |
| c=GG(c,d,a,b,x[k+7], S23,0x676F02D9); | |
| b=GG(b,c,d,a,x[k+12],S24,0x8D2A4C8A); | |
| a=HH(a,b,c,d,x[k+5], S31,0xFFFA3942); | |
| d=HH(d,a,b,c,x[k+8], S32,0x8771F681); | |
| c=HH(c,d,a,b,x[k+11],S33,0x6D9D6122); | |
| b=HH(b,c,d,a,x[k+14],S34,0xFDE5380C); | |
| a=HH(a,b,c,d,x[k+1], S31,0xA4BEEA44); | |
| d=HH(d,a,b,c,x[k+4], S32,0x4BDECFA9); | |
| c=HH(c,d,a,b,x[k+7], S33,0xF6BB4B60); | |
| b=HH(b,c,d,a,x[k+10],S34,0xBEBFBC70); | |
| a=HH(a,b,c,d,x[k+13],S31,0x289B7EC6); | |
| d=HH(d,a,b,c,x[k+0], S32,0xEAA127FA); | |
| c=HH(c,d,a,b,x[k+3], S33,0xD4EF3085); | |
| b=HH(b,c,d,a,x[k+6], S34,0x4881D05); | |
| a=HH(a,b,c,d,x[k+9], S31,0xD9D4D039); | |
| d=HH(d,a,b,c,x[k+12],S32,0xE6DB99E5); | |
| c=HH(c,d,a,b,x[k+15],S33,0x1FA27CF8); | |
| b=HH(b,c,d,a,x[k+2], S34,0xC4AC5665); | |
| a=II(a,b,c,d,x[k+0], S41,0xF4292244); | |
| d=II(d,a,b,c,x[k+7], S42,0x432AFF97); | |
| c=II(c,d,a,b,x[k+14],S43,0xAB9423A7); | |
| b=II(b,c,d,a,x[k+5], S44,0xFC93A039); | |
| a=II(a,b,c,d,x[k+12],S41,0x655B59C3); | |
| d=II(d,a,b,c,x[k+3], S42,0x8F0CCC92); | |
| c=II(c,d,a,b,x[k+10],S43,0xFFEFF47D); | |
| b=II(b,c,d,a,x[k+1], S44,0x85845DD1); | |
| a=II(a,b,c,d,x[k+8], S41,0x6FA87E4F); | |
| d=II(d,a,b,c,x[k+15],S42,0xFE2CE6E0); | |
| c=II(c,d,a,b,x[k+6], S43,0xA3014314); | |
| b=II(b,c,d,a,x[k+13],S44,0x4E0811A1); | |
| a=II(a,b,c,d,x[k+4], S41,0xF7537E82); | |
| d=II(d,a,b,c,x[k+11],S42,0xBD3AF235); | |
| c=II(c,d,a,b,x[k+2], S43,0x2AD7D2BB); | |
| b=II(b,c,d,a,x[k+9], S44,0xEB86D391); | |
| a=AddUnsigned(a,AA); | |
| b=AddUnsigned(b,BB); | |
| c=AddUnsigned(c,CC); | |
| d=AddUnsigned(d,DD); | |
| } | |
| var temp = WordToHex(a)+WordToHex(b)+WordToHex(c)+WordToHex(d); | |
| return temp.toLowerCase(); | |
| } | |
| var gavatar = function (email, size) { | |
| return "http://www.gravatar.com/avatar/" + MD5(email) + "?s=" + size; | |
| }; | |
| var email = $("#social .email").attr("href").split(":")[1]; | |
| var size = 160 | |
| $("#avatar img").attr("src", gavatar(email, size)); | |
| }); |
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