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lib/Alien/Build/Plugin/Fetch/CurlCommand.pm  view on Meta::CPAN

package Alien::Build::Plugin::Fetch::CurlCommand;

use strict;
use warnings;
use 5.008004;
use Alien::Build::Plugin;
use File::Which qw( which );
use Path::Tiny qw( path );
use Capture::Tiny qw( capture );
use File::Temp qw( tempdir );
use List::Util 1.33 qw( any pairmap );
use File::chdir;

# ABSTRACT: Plugin for fetching files using curl
our $VERSION = '2.84'; # VERSION


sub curl_command
{
  defined $ENV{CURL} ? scalar which($ENV{CURL}) : scalar which('curl');
}

has ssl => 0;
has _see_headers => 0;
has '+url' => '';

# when bootstrapping we have to specify this plugin as a prereq
# 1 is the default so that when this plugin is used directly
# you also get the prereq
has bootstrap_ssl => 1;


sub protocol_ok
{
  my($class, $protocol) = @_;
  my $curl = $class->curl_command;
  return 0 unless defined $curl;
  my($out, $err, $exit) = capture {
    system $curl, '--version';
  };

  {
    # make sure curl supports the -J option.
    # CentOS 6 for example is recent enough
    # that it does not.  gh#147, gh#148, gh#149
    local $CWD = tempdir( CLEANUP => 1 );
    my $file1 = path('foo/foo.txt');
    $file1->parent->mkpath;
    $file1->spew("hello world\n");
    my $url = 'file://' . $file1->absolute;
    my($out, $err, $exit) = capture {
      system $curl, '-O', '-J', $url;
    };
    my $file2 = $file1->parent->child($file1->basename);
    unlink "$file1";
    unlink "$file2";
    rmdir($file1->parent);
    return 0 if $exit;
  }

  foreach my $line (split /\n/, $out)
  {
    if($line =~ /^Protocols:\s*(.*)\s*$/)
    {
      my %proto = map { $_ => 1 } split /\s+/, $1;
      return $proto{$protocol} if $proto{$protocol};
    }
  }
  return 0;
}

sub init
{
  my($self, $meta) = @_;

  $meta->prop->{start_url} ||= $self->url;
  $self->url($meta->prop->{start_url});
  $self->url || Carp::croak('url is a required property');

  $meta->add_requires('configure', 'Alien::Build::Plugin::Fetch::CurlCommand' => '1.19')
    if $self->bootstrap_ssl;

  $meta->register_hook(
    fetch => sub {
      my($build, $url, %options) = @_;
      $url ||= $self->url;

      my($scheme) = $url =~ /^([a-z0-9]+):/i;

      if($scheme =~ /^https?$/)
      {
        local $CWD = tempdir( CLEANUP => 1 );

        my @writeout = (
          "ab-filename     :%{filename_effective}",
          "ab-content_type :%{content_type}",
          "ab-url          :%{url_effective}",
        );

        $build->log("writeout: $_\\n") for @writeout;
        path('writeout')->spew(join("\\n", @writeout));

        my @headers;
        if(my $headers = $options{http_headers})
        {
          if(ref $headers eq 'ARRAY')
          {
            @headers = pairmap { -H => "$a: $b" } @$headers;
          }
          else
          {
            $build->log("Fetch for $url with http_headers that is not an array reference");
          }
        }

        my @command = (
          $self->curl_command,