Something about certificates, CA, SSL and alike

Disclaimer: this article is not about security best practices nor contains advices about how to set-up a secure and trusted communication between two peers or a correct and working PKI. Its aim is to give a general picture of a broader topic, whose surface is slightly scratched by this text.


Swiftly, Swift

And so, Apple is pushing Swift 
an innovative new programming language for Cocoa and Cocoa Touch


From blog posts to "html" to editable document

I received the following request: having a blog, I want to put every post altogether into a single document (a word-processor document), keeping just the title, the published date and the content. Can you help me?

I did as follow.
  • Retrieve the full atom feed of the blog… Since the blog was hosted at blogspot, this link was helpful. But I had to add  “?max-results=500” to the url, since otherwise it stops at 50 posts.
  • Now, it is nothing but an xml, so a proper XSLT should be enough. And in fact… I have built upon this, removing everything I didn't need and adding the published date — the date, then, was the only reason for a post processing, since I had no idea how to transform it as I wanted, therefore I have put it raw (almost raw, indeed) into the output html (generated by xsltproc), and then…
  • I wrote few lines of Perl to transform every date from YYYYMMDD to “Weekday name, DD Month Name YYYY” in the generated html;
  • Loaded the html into LibreOffice Writer, then exported to odt.
The result is not perfect, but mainly it's the content's fault, for it is sometimes from a Microsoft Office text (i.e. the entry was written in Microsoft Word, then copy-pasted in the blogger text editor area).

Just to keep this post longer than it could be, here the few lines of Perl code I wrote to reinterpret the dates.
#! /usr/bin/perl
use strict;
while (<>) {
    if (/##(\d{8})##/) {
      my $r = `LC_TIME="it_IT.utf8" date -d$1 +"%A %d %B %Y"`;
    print $_;
In the generated html, the sequence ## was used to mark the date, extracted as YYYYMMDD (using properly substring). I had to set LC_TIME since I am used to set my locale to en_GB.utf8 (I try to keep my system consistent about the language and avoid the mixture that happens when you use locale-aware and locale-unaware softwares), but I needed italian names for week days and months.

Simply silly, but now this post can come to an end. (No, not yet: why do you ignore the export feature? since I have no access to the blog indeed, but I was able to ask for the necessary blogID).