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sharedKey TOTP scheme, Add Content-Security-Policy + X-Frame-Options,…
… fix /blocks, add filesaver.js
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Ben Reeves
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Oct 7, 2013
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,218 @@ | ||
| /* FileSaver.js | ||
| * A saveAs() FileSaver implementation. | ||
| * 2013-01-23 | ||
| * | ||
| * By Eli Grey, http://eligrey.com | ||
| * License: X11/MIT | ||
| * See LICENSE.md | ||
| */ | ||
|
|
||
| /*global self */ | ||
| /*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true, | ||
| plusplus: true */ | ||
|
|
||
| /*! @source http://purl.eligrey.com/github/FileSaver.js/blob/master/FileSaver.js */ | ||
|
|
||
| var saveAs = saveAs | ||
| || (navigator.msSaveOrOpenBlob && navigator.msSaveOrOpenBlob.bind(navigator)) | ||
| || (function(view) { | ||
| "use strict"; | ||
| var | ||
| doc = view.document | ||
| // only get URL when necessary in case BlobBuilder.js hasn't overridden it yet | ||
| , get_URL = function() { | ||
| return view.URL || view.webkitURL || view; | ||
| } | ||
| , URL = view.URL || view.webkitURL || view | ||
| , save_link = doc.createElementNS("http://www.w3.org/1999/xhtml", "a") | ||
| , can_use_save_link = !view.externalHost && "download" in save_link | ||
| , click = function(node) { | ||
| var event = doc.createEvent("MouseEvents"); | ||
| event.initMouseEvent( | ||
| "click", true, false, view, 0, 0, 0, 0, 0 | ||
| , false, false, false, false, 0, null | ||
| ); | ||
| node.dispatchEvent(event); | ||
| } | ||
| , webkit_req_fs = view.webkitRequestFileSystem | ||
| , req_fs = view.requestFileSystem || webkit_req_fs || view.mozRequestFileSystem | ||
| , throw_outside = function (ex) { | ||
| (view.setImmediate || view.setTimeout)(function() { | ||
| throw ex; | ||
| }, 0); | ||
| } | ||
| , force_saveable_type = "application/octet-stream" | ||
| , fs_min_size = 0 | ||
| , deletion_queue = [] | ||
| , process_deletion_queue = function() { | ||
| var i = deletion_queue.length; | ||
| while (i--) { | ||
| var file = deletion_queue[i]; | ||
| if (typeof file === "string") { // file is an object URL | ||
| URL.revokeObjectURL(file); | ||
| } else { // file is a File | ||
| file.remove(); | ||
| } | ||
| } | ||
| deletion_queue.length = 0; // clear queue | ||
| } | ||
| , dispatch = function(filesaver, event_types, event) { | ||
| event_types = [].concat(event_types); | ||
| var i = event_types.length; | ||
| while (i--) { | ||
| var listener = filesaver["on" + event_types[i]]; | ||
| if (typeof listener === "function") { | ||
| try { | ||
| listener.call(filesaver, event || filesaver); | ||
| } catch (ex) { | ||
| throw_outside(ex); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| , FileSaver = function(blob, name) { | ||
| // First try a.download, then web filesystem, then object URLs | ||
| var | ||
| filesaver = this | ||
| , type = blob.type | ||
| , blob_changed = false | ||
| , object_url | ||
| , target_view | ||
| , get_object_url = function() { | ||
| var object_url = get_URL().createObjectURL(blob); | ||
| deletion_queue.push(object_url); | ||
| return object_url; | ||
| } | ||
| , dispatch_all = function() { | ||
| dispatch(filesaver, "writestart progress write writeend".split(" ")); | ||
| } | ||
| // on any filesys errors revert to saving with object URLs | ||
| , fs_error = function() { | ||
| // don't create more object URLs than needed | ||
| if (blob_changed || !object_url) { | ||
| object_url = get_object_url(blob); | ||
| } | ||
| if (target_view) { | ||
| target_view.location.href = object_url; | ||
| } else { | ||
| window.open(object_url, "_blank"); | ||
| } | ||
| filesaver.readyState = filesaver.DONE; | ||
| dispatch_all(); | ||
| } | ||
| , abortable = function(func) { | ||
| return function() { | ||
| if (filesaver.readyState !== filesaver.DONE) { | ||
| return func.apply(this, arguments); | ||
| } | ||
| }; | ||
| } | ||
| , create_if_not_found = {create: true, exclusive: false} | ||
| , slice | ||
| ; | ||
| filesaver.readyState = filesaver.INIT; | ||
| if (!name) { | ||
| name = "download"; | ||
| } | ||
| if (can_use_save_link) { | ||
| object_url = get_object_url(blob); | ||
| save_link.href = object_url; | ||
| save_link.download = name; | ||
| click(save_link); | ||
| filesaver.readyState = filesaver.DONE; | ||
| dispatch_all(); | ||
| return; | ||
| } | ||
| // Object and web filesystem URLs have a problem saving in Google Chrome when | ||
| // viewed in a tab, so I force save with application/octet-stream | ||
| // http://code.google.com/p/chromium/issues/detail?id=91158 | ||
| if (view.chrome && type && type !== force_saveable_type) { | ||
| slice = blob.slice || blob.webkitSlice; | ||
| blob = slice.call(blob, 0, blob.size, force_saveable_type); | ||
| blob_changed = true; | ||
| } | ||
| // Since I can't be sure that the guessed media type will trigger a download | ||
| // in WebKit, I append .download to the filename. | ||
| // https://bugs.webkit.org/show_bug.cgi?id=65440 | ||
| if (webkit_req_fs && name !== "download") { | ||
| name += ".download"; | ||
| } | ||
| if (type === force_saveable_type || webkit_req_fs) { | ||
| target_view = view; | ||
| } | ||
| if (!req_fs) { | ||
| fs_error(); | ||
| return; | ||
| } | ||
| fs_min_size += blob.size; | ||
| req_fs(view.TEMPORARY, fs_min_size, abortable(function(fs) { | ||
| fs.root.getDirectory("saved", create_if_not_found, abortable(function(dir) { | ||
| var save = function() { | ||
| dir.getFile(name, create_if_not_found, abortable(function(file) { | ||
| file.createWriter(abortable(function(writer) { | ||
| writer.onwriteend = function(event) { | ||
| target_view.location.href = file.toURL(); | ||
| deletion_queue.push(file); | ||
| filesaver.readyState = filesaver.DONE; | ||
| dispatch(filesaver, "writeend", event); | ||
| }; | ||
| writer.onerror = function() { | ||
| var error = writer.error; | ||
| if (error.code !== error.ABORT_ERR) { | ||
| fs_error(); | ||
| } | ||
| }; | ||
| "writestart progress write abort".split(" ").forEach(function(event) { | ||
| writer["on" + event] = filesaver["on" + event]; | ||
| }); | ||
| writer.write(blob); | ||
| filesaver.abort = function() { | ||
| writer.abort(); | ||
| filesaver.readyState = filesaver.DONE; | ||
| }; | ||
| filesaver.readyState = filesaver.WRITING; | ||
| }), fs_error); | ||
| }), fs_error); | ||
| }; | ||
| dir.getFile(name, {create: false}, abortable(function(file) { | ||
| // delete file if it already exists | ||
| file.remove(); | ||
| save(); | ||
| }), abortable(function(ex) { | ||
| if (ex.code === ex.NOT_FOUND_ERR) { | ||
| save(); | ||
| } else { | ||
| fs_error(); | ||
| } | ||
| })); | ||
| }), fs_error); | ||
| }), fs_error); | ||
| } | ||
| , FS_proto = FileSaver.prototype | ||
| , saveAs = function(blob, name) { | ||
| return new FileSaver(blob, name); | ||
| } | ||
| ; | ||
| FS_proto.abort = function() { | ||
| var filesaver = this; | ||
| filesaver.readyState = filesaver.DONE; | ||
| dispatch(filesaver, "abort"); | ||
| }; | ||
| FS_proto.readyState = FS_proto.INIT = 0; | ||
| FS_proto.WRITING = 1; | ||
| FS_proto.DONE = 2; | ||
|
|
||
| FS_proto.error = | ||
| FS_proto.onwritestart = | ||
| FS_proto.onprogress = | ||
| FS_proto.onwrite = | ||
| FS_proto.onabort = | ||
| FS_proto.onerror = | ||
| FS_proto.onwriteend = | ||
| null; | ||
|
|
||
| view.addEventListener("unload", process_deletion_queue, false); | ||
| return saveAs; | ||
| }(self)); | ||
|
|
||
| if (typeof module !== 'undefined') module.exports = saveAs; |
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