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IOUtil.js
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265 lines (226 loc) · 7.54 KB
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Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
const IO = {
readFile: function(file, charset) {
var res;
const is = Cc["@mozilla.org/network/file-input-stream;1"]
.createInstance(Ci.nsIFileInputStream );
is.init(file ,0x01, 256 /*0400*/, null);
const sis = Cc["@mozilla.org/scriptableinputstream;1"]
.createInstance(Ci.nsIScriptableInputStream);
sis.init(is);
res = sis.read(sis.available());
is.close();
if (charset !== null) { // use "null" if you want uncoverted data...
const unicodeConverter = Cc["@mozilla.org/intl/scriptableunicodeconverter"]
.createInstance(Ci.nsIScriptableUnicodeConverter);
try {
unicodeConverter.charset = charset || "UTF-8";
} catch(ex) {
unicodeConverter.charset = "UTF-8";
}
res = unicodeConverter.ConvertToUnicode(res);
}
return res;
},
writeFile: function(file, content, charset) {
const unicodeConverter = Cc["@mozilla.org/intl/scriptableunicodeconverter"]
.createInstance(Ci.nsIScriptableUnicodeConverter);
try {
unicodeConverter.charset = charset || "UTF-8";
} catch(ex) {
unicodeConverter.charset = "UTF-8";
}
content = unicodeConverter.ConvertFromUnicode(content);
const os = Cc["@mozilla.org/network/file-output-stream;1"]
.createInstance(Ci.nsIFileOutputStream);
os.init(file, 0x02 | 0x08 | 0x20, 448 /*0700*/, 0);
os.write(content, content.length);
os.close();
},
safeWriteFile: function(file, content, charset) {
var tmp = file.clone();
var name = file.leafName;
tmp.leafName = name + ".tmp";
tmp.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, file.exists() ? file.permissions : 384 /*0600*/);
this.writeFile(tmp, content, charset);
tmp.moveTo(file.parent, name);
}
};
function nsISupportsWrapper(wrapped) {
this.wrappedJSObject = wrapped;
}
nsISupportsWrapper.prototype = {
QueryInterface: XPCOMUtils.generateQI([])
};
const IOUtil = {
asyncNetworking: true,
proxiedDNS: 0,
attachToChannel: function(channel, key, requestInfo) {
if (channel instanceof Ci.nsIWritablePropertyBag2)
channel.setPropertyAsInterface(key, requestInfo);
},
extractFromChannel: function(channel, key, preserve) {
if (channel instanceof Ci.nsIPropertyBag2) {
let p = channel.get(key);
if (p) {
if (!preserve && (channel instanceof Ci.nsIWritablePropertyBag)) channel.deleteProperty(key);
if (p.wrappedJSObject) return p.wrappedJSObject;
p instanceof Ci.nsIURL || p instanceof Ci.nsIURL;
return p;
}
}
return null;
},
extractInternalReferrer: function(channel) {
if (channel instanceof Ci.nsIPropertyBag2) {
const key = "docshell.internalReferrer";
if (channel.hasKey(key))
try {
return channel.getPropertyAsInterface(key, Ci.nsIURL);
} catch(e) {}
}
return null;
},
extractInternalReferrerSpec: function(channel) {
var ref = this.extractInternalReferrer(channel);
return ref && ref.spec || null;
},
getProxyInfo: function(channel) {
return Ci.nsIProxiedChannel && (channel instanceof Ci.nsIProxiedChannel)
? channel.proxyInfo
: Components.classes["@mozilla.org/network/protocol-proxy-service;1"]
.getService(Components.interfaces.nsIProtocolProxyService)
.resolve(channel.URI, 0);
},
canDoDNS: function(channel) {
if (!channel || IOS.offline) return false;
var proxyInfo = this.getProxyInfo(channel);
switch(this.proxiedDNS) {
case 1:
return !(proxyInfo && (proxyInfo.flags & Ci.nsIProxyInfo.TRANSPARENT_PROXY_RESOLVES_HOST));
case 2:
return true;
default:
return !proxyInfo || proxyInfo.type == "direct";
}
},
abort: function(channel, noNetwork) {
channel.cancel(Components.results.NS_ERROR_ABORT);
},
findWindow: function(channel) {
for each(var cb in [channel.notificationCallbacks,
channel.loadGroup && channel.loadGroup.notificationCallbacks]) {
if (cb instanceof Ci.nsIInterfaceRequestor) {
if (Ci.nsILoadContext) try {
// For Gecko 1.9.1
return cb.getInterface(Ci.nsILoadContext).associatedWindow;
} catch(e) {}
try {
// For Gecko 1.9.0
return cb.getInterface(Ci.nsIDOMWindow);
} catch(e) {}
}
}
return null;
},
readFile: IO.readFile,
writeFile: IO.writeFile,
safeWriteFIle: IO.safeWriteFile,
_protocols: {}, // caching them we gain a 33% speed boost in URI creation :)
newURI: function(url) {
try {
let scheme = url.substring(0, url.indexOf(':'));
return (this._protocols[scheme] ||
(this._protocols[scheme] =
Cc["@mozilla.org/network/protocol;1?name=" + scheme]
.getService(Ci.nsIProtocolHandler)))
.newURI(url, null, null);
} catch(e) {
return IOS.newURI(url, null, null);
}
},
unwrapURL: function(url) {
try {
if (!(url instanceof Ci.nsIURI))
url = this.newURI(url);
switch (url.scheme) {
case "view-source":
return this.unwrapURL(url.path);
case "feed":
let u = url.spec.substring(5);
if (u.substring(0, 2) == '//') u = "http:" + u;
return this.unwrapURL(u);
case "wyciwyg":
return this.unwrapURL(url.path.replace(/^\/\/\d+\//, ""));
case "jar":
if (url instanceof Ci.nsIJARURI)
return this.unwrapURL(url.JARFile);
}
}
catch (e) {}
return url;
},
get _channelFlags() {
delete this._channelFlags;
const constRx = /^[A-Z_]+$/;
const ff = {};
[Ci.nsIHttpChannel, Ci.nsICachingChannel].forEach(function(c) {
for (var p in c) {
if (constRx.test(p)) ff[p] = c[p];
}
});
return this._channelFlags = ff;
},
humanFlags: function(loadFlags) {
var hf = [];
var c = this._channelFlags;
for (var p in c) {
if (loadFlags & c[p]) hf.push(p + "=" + c[p]);
}
return hf.join("\n");
},
queryNotificationCallbacks: function(chan, iid) {
var cb;
try {
cb = chan.notificationCallbacks.getInterface(iid);
if (cb) return cb;
} catch(e) {}
try {
return chan.loadGroup && chan.loadGroup.notificationCallbacks.getInterface(iid);
} catch(e) {}
return null;
},
anonymizeURI: function(uri, cookie) {
if (uri instanceof Ci.nsIURL) {
uri.query = this.anonymizeQS(uri.query, cookie);
} else return this.anonymizeURL(uri, cookie);
return uri;
},
anonymizeURL: function(url, cookie) {
var parts = url.split("?");
if (parts.length < 2) return url;
parts[1] = this.anonymizeQS(parts[1], cookie);
return parts.join("?");
},
_splitName: function(nv) nv.split("=")[0],
_qsRx: /[&=]/,
_anonRx: /(?:auth|s\w+(?:id|key)$)/,
anonymizeQS: function(qs, cookie) {
if (!qs) return qs;
if (!this._qsRx.test(qs)) return '';
var cookieNames, hasCookies;
if ((hasCookies = !!cookie)) cookieNames = cookie.split(/\s*;\s*/).map(this._splitName);
let parms = qs.split("&");
for (j = parms.length; j-- > 0;) {
let nv = parms[j].split("=");
let name = nv[0];
if (this._anonRx.test(name) || cookie && cookieNames.indexOf(name) > -1)
parms.splice(j, 1);
}
return parms.join("&");
},
get TLDService() {
delete this.TLDService;
return this.TLDService = Cc["@mozilla.org/network/effective-tld-service;1"].getService(Ci.nsIEffectiveTLDService);
}
};