src/www/util.js

   1 function urlEncode(object) {
   2     var i,value, params = [];
   3
   4     for (i in object) {
   5         if (object.hasOwnProperty(i)) {
   6             value = object[i];
   7             if (value === undefined) value = '';
   8             params.push(encodeURIComponent(i) + '=' + encodeURIComponent(String(value)));
   9         }
  10     }
  11
  12     return params.join('&');
  13 }
  14
  15 var msgtimeout;
  16 var severities = {
  17     normal:  1,
  18     warning: 2,
  19     error:   3,
  20 };
  21
  22 function showMsg(message, timeout, severity) {
  23     var status_bar = document.getElementById('status_bar');
  24     clearTimeout(msgtimeout);
  25
  26     status_bar.classList.remove('normal');
  27     status_bar.classList.remove('warning');
  28     status_bar.classList.remove('error');
  29
  30     status_bar.textContent = message;
  31
  32     severity = severity || severities.normal;
  33
  34     switch (severity) {
  35         case severities.normal:
  36             status_bar.classList.add('normal');
  37             break;
  38         case severities.warning:
  39             status_bar.classList.add('warning');
  40             break;
  41         case severities.error:
  42             status_bar.classList.add('error');
  43             break;
  44         default:
  45             throw "unknown severity";
  46     }
  47
  48     status_bar.classList.add('open');
  49
  50     if (timeout !== 0) {
  51         msgtimeout = setTimeout(hideMsg, timeout || 1500);
  52     }
  53 }
  54
  55 function hideMsg() {
  56     clearTimeout(msgtimeout);
  57     status_bar.classList.remove('open');
  58 }
  59
  60 function getQueryParameter(name) {
  61     var params = location.search.slice(1).split('&');
  62     var result = "";
  63     params.forEach(function(param) {
  64         var components = param.split('=');
  65         if (components[0] === name) {
  66             result = components.slice(1).join('=');
  67         }
  68     });
  69     return result;
  70 }
  71
  72 var cur = 0;
  73 var left = 0;
  74
  75 function Utf8ArrayToStr(arraybuffer) {
  76     var array = new Uint8Array(arraybuffer),
  77         i = 0,
  78         len = array.byteLength,
  79         out = "",
  80         c;
  81
  82     while (i < len) {
  83         c = array[i++];
  84         if (!left && c < 0x80) {
  85                 out += String.fromCharCode(c);
  86         } else if(!left) {
  87             switch (c >> 4) {
  88                 case 12: case 13:
  89                     // 110x xxxx 10xx xxxx
  90                     cur = (c & 0x1F) << 6;
  91                     left = 1;
  92                     break;
  93                 case 14:
  94                     // 1110 xxxx 10xx xxxx 10xx xxxx
  95                     cur = (c & 0x0F) << 12;
  96                     left = 2;
  97                     break;
  98                 case 15:
  99                     // 1111 0xxx 10xx xxxx 10xx xxxx 10xx xxxx
 100                     cur = (c & 0x07) << 18;
 101                     left = 3;
 102                     break;
 103                 default:
 104                     cur = 0;
 105                     out += '\ufffd';
 106             }
 107         } else if (c >= 0x80 && c <= 0xBF) {
 108             cur = cur | ((c & 0x3F) << (--left * 6));
 109             if (!left) {
 110                 out += String.fromCharCode(cur);
 111                 cur = 0;
 112             }
 113         } else {
 114             cur = 0;
 115             left = 0;
 116             out += '\ufffd';
 117         }
 118     }
 119
 120     return out;
 121 }
 122
 123 function API2Request(reqOpts) {
 124     var me = this;
 125
 126     reqOpts.method = reqOpts.method || 'GET';
 127
 128     var xhr = new XMLHttpRequest();
 129
 130     xhr.onload = function() {
 131         var scope = reqOpts.scope || this;
 132         var result;
 133         var errmsg;
 134
 135         if (xhr.readyState === 4) {
 136             var ctype = xhr.getResponseHeader('Content-Type');
 137             if (xhr.status === 200) {
 138                 if (ctype.match(/application\/json;/)) {
 139                     result = JSON.parse(xhr.responseText);
 140                 } else {
 141                     errmsg = 'got unexpected content type ' + ctype;
 142                 }
 143             } else {
 144                 errmsg = 'Error ' + xhr.status + ': ' + xhr.statusText;
 145             }
 146         } else {
 147             errmsg = 'Connection error - server offline?';
 148         }
 149
 150         if (errmsg !== undefined) {
 151             if (reqOpts.failure) {
 152                 reqOpts.failure.call(scope, errmsg);
 153             }
 154         } else {
 155             if (reqOpts.success) {
 156                 reqOpts.success.call(scope, result);
 157             }
 158         }
 159         if (reqOpts.callback) {
 160             reqOpts.callback.call(scope, errmsg === undefined);
 161         }
 162     }
 163
 164     var data = urlEncode(reqOpts.params || {});
 165
 166     if (reqOpts.method === 'GET') {
 167         xhr.open(reqOpts.method, "/api2/json" + reqOpts.url + '?' + data);
 168     } else {
 169         xhr.open(reqOpts.method, "/api2/json" + reqOpts.url);
 170     }
 171     xhr.setRequestHeader('Cache-Control', 'no-cache');
 172     if (reqOpts.method === 'POST' || reqOpts.method === 'PUT') {
 173         xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
 174         xhr.setRequestHeader('CSRFPreventionToken', PVE.CSRFPreventionToken);
 175         xhr.send(data);
 176     } else if (reqOpts.method === 'GET') {
 177         xhr.send();
 178     } else {
 179         throw "unknown method";
 180     }
 181 }
 182
 183 function getTerminalSettings() {
 184     var res = {};
 185     var settings = ['fontSize', 'fontFamily', 'letterSpacing', 'lineHeight'];
 186     if(localStorage) {
 187         settings.forEach(function(setting) {
 188             var val = localStorage.getItem('pve-xterm-' + setting);
 189             if (val !== undefined && val !== null) {
 190                 res[setting] = val;
 191             }
 192         });
 193     }
 194     return res;
 195 }