Wrapping variadic functions for use in Swift

As I noted in my post about getting libcurl working with Swift, curl_easy_setopt() is a variadic function which means that Swift will not import it. If you try to use it you get this error: error: 'curl_easy_setopt' is unavailable: Variadic function is unavailable curl_easy_setopt(handle, CURLOPT_VERBOSE, true) ^~~~~~~~~~~~~~~~ CCurl.curl_easy_setopt:2:13: note: 'curl_easy_setopt' has been explicitly marked unavailable here public func curl_easy_setopt(curl: UnsafeMutablePointer, _ option: CURLoption, _ varargs: Any…) -> CURLcode ^ It's mildly annoying as curl_easy_setopt only… continue reading.

Posted on 23 December 2015 in Swift

Using a C-library in Swift

I'm still enjoying playing with Swift and am beginning to quite like the language. At the moment, I've only ever written with it on Linux, so I'm sure I'm making my life harder than if I was using OS X where it's more mature. On the flip side, if I ever use Swift professionally, it's most likely going to be on a Linux server as a microservice or a command line app at the other… continue reading.

Posted on in Swift

Swift around the web

To get started with messing around with Swift, IBM have created a Swift Sandbox on the web, so you can run Swift on Linux within a browser to play with it. Interesting stuff as it appears that IBM are interested in Swift on server. Also interesting is the Perfect application server for creating server side API applications. I've also found these resources helpful: The Swift Programming Language book (epub) Erica Sadun' Twitter & blog Jesse… continue reading.

Posted on 18 December 2015 in Swift

An Ansible playbook for Swift

I've been learning Swift recently and now that it's Open Source, I'm looking at using it on my Linux server. Firstly however, I wanted to run it within a Vagrant box locally and as I provision all my boxes via Ansible, I created a simple playbook and am recording it here in case its useful to anyone else! The installation instructions are easy to follow, so I simply replicated them as a set of actions.… continue reading.

Posted on 17 December 2015 in Swift

Running Phan against Slim 3

Having installed Phan, I decided to use it against the upcoming Slim 3 codebase. Phan needs a list of files to scan, and the place I started was with Lorna's article on Generating a file list for Phan. I started by removing all the developer dependencies: $ composer update –no-dev and then built the file list for the vendor and Slim directories. I started by using Lorna's grep statement, but that found too many non-PHP… continue reading.

Posted on 10 December 2015 in PHP, Slim Framework, Slim Framework 3

Installing Phan on OS X

I use Homebrew for my local PHP installation on OS X and am currently running PHP 7.0.0 RC8. Phan is a static analyser for PHP 7 which was written by Rasmus and then rewritten by Andrew Morrison. As it benefits from PHP 7's abstract syntax tree it can find all kinds of subtle errors, so I wanted to install it locally to have a play with it. I started by trying to install Phan into… continue reading.

Posted on 3 December 2015 in PHP

Installing 32 bit packages on Ubuntu 14.04

This had me stumped for a bit, so I've written it down. If you have a 64 bit version of Ubuntu and want to install a 32-bit package, you simply add :i386 to the end of the package name like this: $ sudo apt-get install libstdc++6:i386 However, this didn't initially work for me as apt-get couldn't find the package: $ sudo apt-get install libstdc++6:i386 Reading package lists… Done Building dependency tree Reading state information… Done… continue reading.

Posted on 30 November 2015 in Computing

Slim 3.0 RC2 Released

I released Slim 3 RC 2 today after a longer than expected gap from RC1. The gap was caused by two things: Real LifeTM was busy for all the core team members People test RCs, but not betas! Obviously, the important one here was testing. Thank your everyone who tested RC1! As a result, a number of important issues were raised after RC1 was released which we had to address. Two key BC-breaking ones involved… continue reading.

Posted on 9 November 2015 in Slim Framework, Slim Framework 3

Writing PSR-7 middleware

Within Slim 3's Request object, there's a method called getIp() which is determines the client's IP address. However it's rather simplistic and potentially risky as it checks the X-Forwarded-For header with no ability to ignore this header or whitelist whether we trust the final proxy in the chain. Determining the client's IP address is an ideal use-case for middleware as we can inspect the headers in the request and then set an attribute so that… continue reading.

Posted on 5 November 2015 in PHP

Changing Apigility's auth token expiry

By default, the OAuth 2 token that is generated in an Apigility app expires in 1 hour. Upon expiry, the client is expected to use the refresh token to get a new access token. You can see this when you authenticate via a POST to /oauth as you get this response back: { "access_token": "3812aaea7640a2567c66e21e2587450821103552", "expires_in": 3600, "token_type": "Bearer", "scope": null, "refresh_token": "72d5df08c971526a4ba7c83ec2a7b92d82d9715b" } If you need longer than 1 hour, then simply add this… continue reading.

Posted on 29 October 2015 in Apigility