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#!/usr/bin/perl
package IkiWiki::Plugin::amazon_s3;
use warnings;
no warnings 'redefine';
use strict;
use IkiWiki 2.00;
use IkiWiki::Render;
use Net::Amazon::S3;
# Store references to real subs before overriding them.
our %subs;
BEGIN {
foreach my $sub (qw{IkiWiki::writefile IkiWiki::prune}) {
$subs{$sub}=\&$sub;
}
};
sub import { #{{{
hook(type => "checkconfig", id => "amazon_s3", call => \&checkconfig);
} # }}}
sub checkconfig { #{{{
foreach my $field (qw{amazon_s3_key_id amazon_s3_key_file
amazon_s3_bucket}) {
if (! exists $config{$field} || ! defined $config{$field}) {
error(sprintf(gettext("Must specify %s"), $field));
}
}
if (! exists $config{amazon_s3_prefix} ||
! defined $config{amazon_s3_prefix}) {
$config{amazon_s3_prefix}="wiki/";
}
} #}}}
{
my $bucket;
sub getbucket { #{{{
return $bucket if defined $bucket;
open(IN, "<", $config{amazon_s3_key_file}) || error($config{amazon_s3_key_file}.": ".$!);
my $key=<IN>;
chomp $key;
close IN;
my $s3=Net::Amazon::S3->new({
aws_access_key_id => $config{amazon_s3_key_id},
aws_secret_access_key => $key,
retry => 1,
});
# make sure the bucket exists
if (exists $config{amazon_s3_location}) {
$bucket=$s3->add_bucket({
bucket => $config{amazon_s3_bucket},
location_constraint => $config{amazon_s3_location},
});
}
else {
$bucket=$s3->add_bucket({
bucket => $config{amazon_s3_bucket},
});
}
if (! $bucket) {
error(gettext("Failed to create bucket in S3: ").
$s3->err.": ".$s3->errstr."\n");
}
return $bucket;
} #}}}
}
package IkiWiki;
use File::MimeInfo;
use Encode;
# This is a wrapper around the real writefile.
sub writefile ($$$;$$) { #{{{
my $file=shift;
my $destdir=shift;
my $content=shift;
my $binary=shift;
my $writer=shift;
# First, write the file to disk.
my $ret=$IkiWiki::Plugin::amazon_s3::subs{'IkiWiki::writefile'}->($file, $destdir, $content, $binary, $writer);
# Now, determine if the file was written to the destdir.
# writefile might be used for writing files elsewhere.
# Also, $destdir might be set to a subdirectory of the destdir.
my $key;
if ($destdir eq $config{destdir}) {
$key=$file;
}
elsif ("$destdir/$file" =~ /^\Q$config{destdir}\/\E(.*)/) {
$key=$1;
}
# Store the data in S3.
if (defined $key) {
$key=$config{amazon_s3_prefix}.$key;
my $bucket=IkiWiki::Plugin::amazon_s3::getbucket();
# The http layer tries to downgrade utf-8
# content, but that can fail (see
# http://rt.cpan.org/Ticket/Display.html?id=35710),
# so force convert it to bytes.
$content=encode_utf8($content) if defined $content;
if (defined $content && ! length $content) {
# S3 doesn't allow storing empty files!
$content=" ";
}
my %opts=(
acl_short => 'public-read',
content_type => mimetype("$destdir/$file"),
);
my $res;
if (! $writer) {
$res=$bucket->add_key($key, $content, \%opts);
}
else {
# read back in the file that the writer emitted
$res=$bucket->add_key_filename($key, "$destdir/$file", \%opts);
}
if ($res && $key=~/(^|\/)index.$config{htmlext}$/) {
# index.html files are a special case. Since S3 is
# not a normal web server, it won't serve up
# foo/index.html when foo/ is requested. So the
# file has to be stored twice. (This is bad news
# when usedirs is enabled!)
$key=~s/index.$config{htmlext}$//;
if (! $writer) {
$res=$bucket->add_key($key, $content, \%opts);
}
else {
$res=$bucket->add_key_filename($key, "$destdir/$file", \%opts);
}
}
if (! $res) {
error(gettext("Failed to save file to S3: ").
$bucket->err.": ".$bucket->errstr."\n");
}
}
return $ret;
} #}}}
# This is a wrapper around the real prune.
sub prune ($) { #{{{
my $file=shift;
my $bucket=IkiWiki::Plugin::amazon_s3::getbucket();
print STDERR "wrapped prune\n";
return $IkiWiki::Plugin::amazon_s3::subs{'IkiWiki::writefile'}->($file);
} #}}}
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