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• Aes key length significance/implications

  - by cppdev

  Hi, I am using a AES algorithm in my application for encrypting plain text. I am trying to use a key which is a six digit number. But as per the AES spec, the key should be minimum sixteen bytes in length. I am planning to append leading zeros to my six digit number to make it a 16 byte and then use this as a key. Would it have any security implications ? I mean will it make my ciphertext more prone to attacks. Please help.

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• Can't get ajax - loaded image's height and width via jquery.

  - by Smickie

  I'm loading an image exteranlly via ajax like so... function load_image(image_href) { var img = new Image(); $(img).load(function () { $(this).hide(); $('#a_box').append(this); $(this).fadeIn(); }, gallery_image_load_complete() ).error(function () { }).attr('src', image_href); } function gallery_image_load_complete() { conslole.log('complete') $('#a_box img').height(); //wrong numbers, as though the image is partially loaded $('#a_box img').width(); //wrong numbers } The problem is I'm trying to get the loaded image's height and width inside the function gallery_image_load_complete(). For some reason, this image height and width are off, it's astohugh the image hasn't fully loaded. Can someone help me out please?

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• Can I embed video on external sites while still using tokens to protect the content?

  - by JKS

  On our own website, it's easy to protect against direct links to our video content by grabbing a token through AJAX and verifying the token through PHP before the file download is started. However I'm also researching how I could provide an embed feature, like YouTube or vimeo etc., without compromising this security feature. The problem is that the embed code I want to provide should look something like <object>...<embed>...</embed></object> -- but I don't know how to grab and append the token to the filename. I mean, I guess I could attach a script that did some gnarly JNOP business, but that's too dirty. I'm using JW Player for the actual video container. Huge thanks to anyone who can help...

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• Clear Select options when selecting one field while using multiple forms on same page

  - by Nizam

  Hi all, I have a situation where the second select list option is generated from the first select list selected option. Like when we select Country corresponding states are generated in next select list. In my case I am having multiple forms on single page which are same. Can anyone let me know how to implement it on multiple forms. I tried the following code but it didn't work $(".country").change(function(){ $.get("sample.php?val=" + $(this).val(), function(data){ $(this).parent().next().children('.state').children('option').remove(); $(this).parent().next().children('.state').append(data); }); Waiting for your support thanks in advance

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• CRSF token and Session replication with Tomcat and Apache

  - by technocool

  I have an J2EE compliant web application. I use a session based token to append a secondary id to all incoming link generated by my application. To prevent my application against CSRF attack, I validate the secondary id before I allow the user session to work off the subsequent page. Recently, while working with session replication mechanism implementation, I observed that on session failover, the generated secodary id is lost and the user get re directed to the login page/default page. Any suggestions on how I can ensure that the my generated secondary token id is not lost from the replicated session?

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• jQuery object are immutable?

  - by Daniel

  Hello a new noob on jQuery here and I was wondering if jQuery objects are immutable. For example: var obj1 = $("<tag></tag>"); var obj2 = obj1.append("something"); Will obj1 and obj2 be the same meaning obj2 will reference obj1? UPDATE: The above example kind of scratches the surface of what i want to know, a more accurate question is : If i chain function from the jQuery api will they return the same object or a new one (as the case with strings in Java)?

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• jquery add row on click only if it's empty?

  - by KittyYoung

  The code below works, insomuch that if I click in an input field, it'll add another row. I'm trying to figure out though, how to do that only if the input field is empty? $("#tableSearchData > tbody > tr > td > input").bind('focus', function(){ var row = $(this).closest("tr").get(0); if( row.className.indexOf("clicked")==-1 ) { var rowCopy=$(row).clone(true); $(row).closest("tbody").append(rowCopy); row.className+=" clicked"; } });

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• [jQuey] How select an element by class name, previously loaded in DOM

  - by Mattia

  I write a simple piece of code that creates a div and assign it a class name: $('#create_div').click( function() { div = $("<div>").addClass("myClass"); $("body").append(div); } ); Ok: after "create_div" button is fired the function appends the new div to body container. Now... : How to select the new element created ? How do I reach it? I have tried: $('.myClass').click( function() { // do something } ); but it doesn't works. Thanks for the help!

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• Getting value from key pair value into appended property using jQuery

  - by Neil

  How do I get the value from a key pair value into the rel property of an anchor tag? When I split the code to put the value in the correct place it doesn't work, the end of the a tag would appear on screen instead value wouldn't be applied. When I look at the resulting code in console in Firebug the rel and href swapped order so the rel is first. The 'key' should be and is in the correct location but the 'value' needs to be applied to the rel attribute. What am I doing wrong? $(function() { var obj = {"firstThing":"4","secondThing":"6","aThirdThing":"2","anotherThing":"3","followedByAnother":"4"}; $.each(obj, function(key,value) { $('#newmine').append("<li class='tagBlocks'>","<a href='#' rel=''>",value," ",key); }); });

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• android html download and parse error

  - by Brahadeesh

  I am trying to download the html file using the ul of the page. I am using Jsoup. This is my code: TextView ptext = (TextView) findViewById(R.id.pagetext); Document doc = null; try { doc = (Document) Jsoup.connect(mNewLinkUrl).get(); } catch (IOException e) { Log.d(TAG, e.toString()); e.printStackTrace(); } NodeList nl = doc.getElementsByTagName("meta"); Element meta = (Element) nl.item(0); String title = meta.attr("title"); ptext.append("\n" + mNewLinkUrl); When running it, I am getting an error saying attr is not defined for the type element. What have I done wrong? Pardon me if this seems trivial.

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• Random List of millions of elements in Python Efficiently

  - by eWizardII

  Hello, I have read this answer potentially as the best way to randomize a list of strings in Python. I'm just wondering then if that's the most efficient way to do it because I have a list of about 30 million elements via the following code: import json from sets import Set from random import shuffle a = [] for i in range(0,193): json_data = open("C:/Twitter/user/user_" + str(i) + ".json") data = json.load(json_data) for j in range(0,len(data)): a.append(data[j]['su']) new = list(Set(a)) print "Cleaned length is: " + str(len(new)) ## Take Cleaned List and Randomize it for Analysis shuffle(new) If there is a more efficient way to do it, I'd greatly appreciate any advice on how to do it. Thanks,

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• Get a queryset of objects through an intermediary model

  - by skyl

  I want get all of the Geom objects that are related to a certain content_object (see the function I'm trying to build at the bottom, get_geoms_for_obj() class Geom(models.Model): ... class GeomRelation(models.Model): ''' For tagging many objects to a Geom object and vice-versa''' geom = models.ForeignKey(Geom) content_type = models.ForeignKey(ContentType) object_id = models.PositiveIntegerField() content_object = generic.GenericForeignKey() def get_geoms_for_object(obj): ''' takes an object and gets the geoms that are related ''' ct = ContentType.objects.get_for_model(obj) id = obj.id grs = GeomRelation.objects.filter( content_type=ct, object_id=id ) # how with django orm magic can I build the queryset instead of list # like below to get all of the Geom objects for a given content_object geoms = [] for gr in grs: geoms.append(gr.geom) return set(geoms) # A set makes it so that I have no redundant entries but I want the # queryset ordering too .. need to make it a queryset for so many reasons...

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• New wxpython controls not displaying until resize

  - by acrosman

  I have created a custom control (based on a panel) in wxPython that provides a list of custom controls on panel within it. The user needs to be able to add rows at will and have those rows displayed. I'm having trouble getting the new controls to actually appear after they are added. I know they are present, because they appear after a resize of the frame, or if I add them before Show() is called on the frame. I've convinced myself it's something basic, but I can't find the mistake. The add function looks like this: def addRow(self, id, reference, page, title, note): newRow = NoteListRow(self.listPanel, id, reference, page, title, note) self.listSizer.Add(newRow, flag=wx.EXPAND | wx.LEFT) self.rows.append(newRow) if len(self.rows) == 1: self.highliteRow(newRow) self.Refresh() self.Update() return newRow I assume I'm missing something about how refresh and update are supposed to behave, so even a good extended reference on those would likely be helpful.

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• python logparse search specific text

  - by krisdigitx

  hi, I am using this function in my code to return the strings i want from reading the log file, I want to grep the "exim" process and return the results, but running the code gives no error, but the output is limited to three lines, how can i just get the output only related to exim process.. #output: {'date': '13', 'process': 'syslogd', 'time': '06:27:33', 'month': 'May'} {'date': '13', 'process': 'exim[23168]:', 'time': '06:27:33', 'month': 'May'} {'May': ['syslogd']} #function: def generate_log_report(logfile): report_dict = {} for line in logfile: line_dict = dictify_logline(line) print line_dict try: month = line_dict['month'] date = line_dict['date'] time = line_dict['time'] #process = line_dict['process'] if "exim" in line_dict['process']: process = line_dict['process'] break else: process = line_dict['process'] except ValueError: continue report_dict.setdefault(month, []).append(process) return report_dict

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• How to handle model state errors in ajax-invoked controller action that returns a PartialView

  - by Robert Koritnik

  I have a POST controller action that returns a partial view. Everything seems really easy. but. I load it using $.ajax(), setting type as html. But when my model validation fails I thought I should just throw an error with model state errors. But my reply always returns 500 Server error. How can I report back model state errors without returning Json with whatever result. I would still like to return partial view that I can directly append to some HTML element. Edit I would also like to avoid returning error partial view. This would look like a success on the client. Having the client parse the result to see whether it's an actual success is prone to errors. Designers may change the partial view output and this alone would break the functionality. So I want to throw an exception, but with the correct error message returned to the ajax client.

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• Killing a script launched in a Process via os.system()

  - by L.J.

  I have a python script which launches several processes. Each process basically just calls a shell script: from multiprocessing import Process import os import logging def thread_method(n = 4): global logger command = "~/Scripts/run.sh " + str(n) + " >> /var/log/mylog.log" if (debug): logger.debug(command) os.system(command) I launch several of these threads, which are meant to run in the background. I want to have a timeout on these threads, such that if it exceeds the timeout, they are killed: t = [] for x in range(10): try: t.append(Process(target=thread_method, args=(x,) ) ) t[-1].start() except Exception as e: logger.error("Error: unable to start thread") logger.error("Error message: " + str(e)) logger.info("Waiting up to 60 seconds to allow threads to finish") t[0].join(60) for n in range(len(t)): if t[n].is_alive(): logger.info(str(n) + " is still alive after 60 seconds, forcibly terminating") t[n].terminate() The problem is that calling terminate() on the process threads isn't killing the launched run.sh script - it continues running in the background until I either force kill it from the command line, or it finishes internally. Is there a way to have terminate also kill the subshell created by os.system()?

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• Sockets: RAW or STREAM

  - by user1415536

  May be the question is a bit stupid, but I'll ask it. I read a lot about raw sockets in network, have seen several examples. So, basically with raw sockets it's possible to build own stack of headers, like stack = IP + TCP/UDP + OWN_HEADER. My question is, is it possible to get some kind of ready frame of first two(IP + TCP/UDP) from the linux kernel and then just append own header to them? The operating system in question is linux and the language is C. I cannot find any function which can do such a thing, but may be I'm digging in a wrong direction.

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• How to split up a long list using \n

  - by pypy

  Here is a long string that I convert to a list so I can manipulate it, and then join it back together. I am having some trouble being able to have an iterator go through the list and when the iterator reach, let us say every 5th object, it should insert a '\n' right there. Here is an example: string = "Hello my name is Josh I like pizza and python I need this string to be really really long" string = string.split() # do the magic here string = ' '.join(string) print(string) Output: Hello my name is Josh I like pizza and python I need this string to be really really long Any idea how i can achieve this? I tried using: for words in string: if words % 5 == 0: string.append('\n') but it doesn't work. What am I missing?

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• disable hibernate logging in cosole

  - by ganiOz

  Hi, My log4j.properties looks like log4j.rootCategory=DEBUG, A1 log4j.appender.A1=org.apache.log4j.RollingFileAppender log4j.appender.A1.File=InteroperabilityFatal.log log4j.appender.A1.MaxFileSize=1000KB log4j.appender.A1.MaxBackupIndex=1000 log4j.appender.A1.layout=org.apache.log4j.PatternLayout log4j.appender.A1.layout.ConversionPattern=%p %t %c - %m%n log4j.appender.A1.Threshold=FATAL log4j.appender.A1.Append=true log4j.logger.org.hibernate=FATAL log4j.logger.org.hibernate.sql=FATAL log4j.logger.org.hibernate.hql=error I want only fatal logs into the file and nothing in console. But hibernate is logging all its info in console. Can someone pls let me know a way to stop this? I tried in eclipse and from executable jar file, still the hibernate is keep logging in console. Thanks in advance for help.

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• Spawning and waiting for child processes in Python

  - by Brendan Long

  The relevant part of the code looks like this: pids = [] for size in SIZES: pids.append(os.spawnv(os.P_NOWAIT, RESIZECMD, [RESIZECMD, lotsOfOptions])) # Wait for all spawned imagemagick processes to finish while pids: (pid, status) = os.waitpid(0, 0) if pid: pids.remove(pid) What this should be doing is spawning all of the processes off, then waiting for each process to finish before continuing. What it does is work for the most part but sometimes crash on the next section (when it expects all of these processes to be finished). Is there something wrong with this? Is there a better way of doing it? The environment it has to work on is CentOS with Python 2.4, but I'm testing on Cygwin with Python 2.5, so it could be that it fails on my machine but will work on the Linux one (the Linux machine is very slow and this error is rare, so I haven't been able to get it on there).

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• PHP: passing GET between multiple pages

  - by aterimperator

  I'm building a set of pages where I have a number of GET variables and it is often valuable to keep passing it along to the next page. This leads to ugly code where I have to have "if this $_GET variable is set, dynamically add it to this hyperlink". This is, in many senses, not a problem; but I had the thought "there must be a better way to do this", I mean after all basically all I want is to take the '?' and everything after it and append it to the links on that page, it would seem this should be rather simple (or at least possible to do in a for loop). I tried google searching but couldn't find anything, so I figured I'd see if any of you happen to know. Why not use SESSION? Because these pages need to be capable of being bookmarked. Thank you.

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• Offline mode app in a (HTML5) browser possible?

  - by Horace Ho

  Is it possible to build an application inside in browser? An application means: 1 Where there is connection (online mode) between the browser and an remote application server: the application runs in typical web-based mode the application stores necessary data in offline storage, to be used in offline mode (2) the application sync/push data (captured during offline mode) back to the server when it is resumed from offline mode back to online mode 2 Where there is no connection (offline mode) between the browser and an remote application server: the application will still run (javascript?) the application will present data (which is stored offline) to user the application can accept input from user (and store/append in offline storage) Is this possible? If the answer is a yes, is there any (Ruby/Python/PHP) framework being built? Thanks

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• Basic javascript function

  - by McDan Garrett

  I have this function working <script type="text/javascript"> $(window).scroll(function() { if ($(window).scrollTop() == $(document).height() - $(window).height()) { $('div#loadmoreajaxloader').show(); $.ajax({ url: "loadmore.php?wall=<?php echo $wall; ?>&lastid=" + $(".postitem:last").attr("id"), success: function(html) { if (html) { $("#postswrapper").append(html); $('div#loadmoreajaxloader').hide(); } else { $('div#loadmoreajaxloader').html('<center><font color="white">No more posts to show.</font></center>'); } } }); } }); </script> But I need to have the same stuff happening (on IOS Devices), but instead of it happening when the browser reaches the loadmoreajaxeloader div, I simply need it to happen on an onclick event on a link. Thanks heaps. Tried to add code but didn't format so here it is http://pastebin.com/p2VUqZff

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• How do I read from a file consists of city names and coordinates/Populations and create functions to get the coordinates and population?

  - by Braybray

  I'm using Python, and I have a file which has city names and information such as names, coordinates of the city and population of the city: Youngstown, OH[4110,8065]115436 Yankton, SD[4288,9739]12011 966 Yakima, WA[4660,12051]49826 1513 2410 Worcester, MA[4227,7180]161799 2964 1520 604 Wisconsin Dells, WI[4363,8977]2521 1149 1817 481 595 How can I create a function to take the city name and return a list containing the latitude and longitude of the given city? fin = open ("miles.dat","r") def getCoordinates cities = [] for line in fin: cities.append(line.rstrip()) for word in line: print line.split() That's what I tried now; how could I get the coordinates of the city by calling the names of the city and how can I return the word of each line but not letters? Any help will be much appreciated, thanks all.

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• Image not loading from cache after it's loaded in an iframe

  - by Amir

  I'm loading an image in an iframe and then (once the iframe is loaded) loading the image on the page. But most browsers seem to be loading the image twice. Why isn't the img tag being loading from the cache? Something like this: var loader = $('<iframe />').appendTo('body')[0]; loader.onload = function() { $('body').append('<img src="' + imgsrc + '" />'); }; loader.src = imgsrc; http://jsfiddle.net/amirshim/na3UA/ I'm using fiddler2 to see the network traffic. In case you want to know why I want to do this, check out this question

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