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#!/opt/bin/perl |
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|
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system "echo $$ >fmd.pid"; |
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use Coro::Debug; our $server = new_unix_server Coro::Debug "debug"; |
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|
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=head1 fmd - the freenet mass downloader |
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|
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Fmd is at a very early stage of development (and very hackish, too), as I |
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am learning the basics of freenet myself. |
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|
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However, I use it in production, and since it verifies everything it |
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decodes etc., it seems to be quite safe to use, that is, if you know how |
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to debug perl :) |
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|
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=head2 FEATURES |
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|
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- decoding is done "in place", i.e. all non-checkblock blocks are |
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stored in-place and will not be moved, only checkblocks will |
| 19 |
be moved to their final position in the file before decoding. |
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- high resistance against failures of fred or fmd |
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- extremely persistent retry behaviour - there is no such thing |
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as a permanent failure. |
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- handles hundreds of simultaneous downloads with grace. |
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|
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=head2 ENVIRONMENT |
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|
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Set FMD_HOME to a directory (default ~/fmd) where fmd will store it's |
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files. It will not store your porn files or other freenet data outside |
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that directory. |
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|
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The subdirectory db will contain a database (soon to go away), while tmp |
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contains queue files and partial splitfiles. All finished files will be |
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moved to the done subdir. |
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|
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FREDHOST and FREDPORT do the obvious. Fix these docs if you disagree. |
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|
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Also edit the fmd executable for the number of threads and other |
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non-useful constants. The default number (250) works for me, probably not |
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for you. |
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|
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=head2 COMMANDS |
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|
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=over 4 |
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|
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=item CHK@... (space or "/") filename |
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|
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Just pasting a CHK and a filename sperated by one or more spaces or |
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slashes will add files to the queue. The line can have leading garbage, |
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i.e. you can paste full uris. |
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|
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=item <attachment>...</attachment> |
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|
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=item <attach>...</attach> |
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|
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=item <attached>...</attached> |
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|
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Will add frosts mentally deranged pseudo-xml format, soon to be replaced |
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by something even more horrible. |
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|
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=item l |
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|
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List all jobs by number. |
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|
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=item <number> (optionally trailing command) |
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|
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Selects the job with the given number for further comamnds that require a current job. |
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|
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=item s |
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|
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Show the current job. Bot useful right now. |
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|
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=item k |
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|
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Kill the current job. This will keep the temp. file around. Sorry. (But it |
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could be used to reconstruct the download.. hmm..) |
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|
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=item pri<number> |
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|
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Set the current job priority to <pri>. The default is 1. A job with higher |
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priority will (on average) get more requests. |
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|
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The useful range is probably 0..100, but be careful and limit yourself to |
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small values (<10), otherwise your other downloads might starve! |
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|
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=item q |
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|
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Kill the command prompt. Yupp. |
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|
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=back |
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|
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=cut |
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|
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use strict; |
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|
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use EV; |
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use Coro::EV; |
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|
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use Net::FCP; |
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use Storable (); |
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use Time::HiRes; |
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use Coro 4.23; |
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use Coro::Channel; |
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use Coro::Handle; |
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use Coro::Signal; |
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use Coro::Timer; |
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use Coro::AIO; |
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use Coro::Storable (); |
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use List::Util; |
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use Digest::SHA1; |
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use Algorithm::FEC; |
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use Digest::SHA1; |
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use Net::FCP::Util; |
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use POSIX (); |
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|
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Coro::AIO::max_poll_time 0.01; |
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Coro::AIO::min_parallel 1; |
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Coro::AIO::max_parallel 32; |
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|
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$|=1; |
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|
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our $MAX_TXN = 400; # use max. this many transactions in parallel |
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our @HTL = (3,5,10,15,20); |
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our $VERIFY_CHK = 1; # verify all blocks, again and again (only useful to debugging). |
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our $FMD_HOME = $ENV{FMD_HOME} || "$ENV{HOME}/fmd"; |
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|
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our $FCP = new Net::FCP; |
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|
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defined $FMD_HOME |
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or die "you currently must define FMD_HOME to a persistent directory"; |
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|
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mkdir $FMD_HOME, 0700; |
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|
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our $QUEUE_HOME = "$FMD_HOME/job"; |
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mkdir $QUEUE_HOME, 0700; |
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our $DATA_HOME = "$FMD_HOME/tmp"; |
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mkdir $DATA_HOME, 0700; |
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our $DONE_HOME = "$FMD_HOME/done"; |
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mkdir $DONE_HOME, 0700; |
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|
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our %job; |
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|
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sub push_key { |
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my ($key, $title) = @_; |
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|
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for my $job (values %job) { |
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if ($job->{p}{key} eq $key) { |
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warn "job $job->{id} already works on this, not adding"; |
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return; |
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} |
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} |
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|
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my $job = job->new_from_key ($key, $title); |
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warn "added as job $job->{id}\n"; |
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$job; |
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} |
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|
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sub cmdline { |
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my ($i, $o) = @_; |
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|
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my $cmd = async { |
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my $job; |
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while (print $o "> " and defined ($_ = <$i>)) { |
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chomp; |
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if (/<attach(?:ment|ed|)>(.*) \* (CHK[^<]+)<\/attach/) { |
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$job = push_key $2, $1; |
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} elsif (/(CHK\@[a-zA-Z0-9,~\-]{54})[\/ ]+(.*?)\s*$/) { |
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$job = push_key $1, $2; |
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} elsif (s/^(\d+)//) { |
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if ($job = $job{$1}) { |
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print $o delete $job->{log}; |
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if ($job->{input}) { |
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} |
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} |
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redo; |
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} elsif (/^q/) { |
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close $i; |
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close $o; |
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} elsif (/^l/) { |
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for my $job (sort { $a->{id} <=> $b->{id} } values %job) { |
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print $o "$_ $job->{id}: $job->{p}{key} $job->{p}{title} $job->{status}\n"; |
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} |
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# } elsif (/^pri\s*(\d+)/) { |
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# if ($job) { |
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# $job->{p}{pri} = $1; |
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# $job->save; |
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# } |
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} elsif (/^s$/) { |
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print $o $job->show if $job; |
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} elsif (/^k$/) { |
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$job->kill if $job; |
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} elsif (/^p(.*)/) { |
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print $o +(join " ", eval $1), "\n"; |
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} elsif (/\S/) { |
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# |
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} else { |
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print $o "?\n"; |
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} |
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for my $job (sort { $a->{id} <=> $b->{id} } values %job) { |
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if ($job->{_input}) { |
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print $o "> $job->{id} $job->{title} $job->{status}\n"; |
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} |
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} |
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} |
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}; |
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} |
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|
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package job; |
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|
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use strict; |
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|
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use Coro; |
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use Coro::AIO; |
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use Fcntl; |
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use IO::Handle; |
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use Array::Heap2; |
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|
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our $count = 0; |
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|
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sub new { |
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my $class = shift; |
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|
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my $self = bless { @_ }, $class; |
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|
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for my $job (values %job) { |
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if ($job->{p}{key} eq $self->{p}{key}) { |
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warn "job $job->{id} already works on this, not adding"; |
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aio_unlink $self->{job}; |
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return; |
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} |
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} |
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|
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$self->{p}{title} !~ /\// |
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or die "$self->{p}{title}: malformed key\n"; |
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|
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$self->{p}{title} =~ s/\s+$//; |
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$self->{p}{title} =~ s/\n/_/g; |
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|
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$self->{id} = ++$count; |
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$self->{job} ||= "$QUEUE_HOME/" . Time::HiRes::time . ":$count.j"; |
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|
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$job{$self->{id}} = $self; |
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|
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$self->start; |
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$self |
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} |
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|
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sub new_from_key { |
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my ($class, $key, $title) = @_; |
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$class->new (p => { key => $key, title => $title, state => "examine" }); |
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} |
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|
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sub new_from_file { |
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my ($class, $path) = @_; |
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$class->new (job => $path, p => Storable::retrieve $path); |
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} |
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|
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sub save { |
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my ($self) = @_; |
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if (my $fh = aio_open "$self->{job}~", O_CREAT|O_TRUNC|O_WRONLY, 0600) { |
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aio_write $fh, 0, undef, Coro::Storable::blocking_nfreeze $self->{p}, 0; |
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aio_fsync $fh; |
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aio_close $fh; |
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aio_rename "$self->{job}~", $self->{job}; |
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aio_pathsync $QUEUE_HOME; |
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} |
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} |
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|
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sub clean { |
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my ($self) = @_; |
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|
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delete $job{$self->{id}}; |
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$self->save; |
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system "mv", $self->{job}, "$DONE_HOME/$self->{p}{title}.job"; |
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unlink $self->{job}; |
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} |
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|
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sub kill { |
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my ($self) = @_; |
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|
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$self->clean; |
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$self->{coro}->cancel; |
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} |
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|
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our @queue; |
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our $queue_change = new Coro::Signal; |
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our $queue_alloc = 0; |
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|
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async { |
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for (;;) { |
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while (@queue |
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and (($queue[0][0] > 10 and $queue_alloc < $MAX_TXN) |
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or ($queue[0][0] > 1 and $queue_alloc < $MAX_TXN - 3) |
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or $queue_alloc < $MAX_TXN - 5)) { |
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(pop_heap @queue)->[1]->send; |
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$queue_alloc++; |
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Coro::Timer::sleep 0.05; |
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} |
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$queue_change->wait; |
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} |
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}; |
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|
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sub txn_begin { |
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my ($pri) = @_; |
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my $sig = new Coro::Signal; |
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|
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#warn "txn_begin $pri\n";#d# |
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push_heap @queue, [$pri, $sig]; |
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$queue_change->send; |
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$sig->wait; |
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} |
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|
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sub txn_end { |
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$queue_alloc--; |
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$queue_change->send; |
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} |
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|
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sub txn_client_get { |
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my %arg = @_; |
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|
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txn_begin $arg{pri}; |
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$FCP->txn_client_get ($arg{uri}, $arg{htl})->cb (unblock_sub { |
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txn_end; |
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|
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$arg{cb}->(@_); |
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}); |
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} |
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|
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sub fetch_uri { |
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my ($pri, $uri) = @_; |
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|
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for(my $count = 1; ; $count += 0.3) { |
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for my $htl (@HTL) { |
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txn_begin time + $htl + $count; |
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my ($meta, $data) = eval { @{ $FCP->client_get ($uri, $htl) } }; |
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txn_end; |
| 336 |
if ($@) { |
| 337 |
if (UNIVERSAL::isa ($@, Net::FCP::Exception::)) { |
| 338 |
if ($@->type ("data_not_found") |
| 339 |
|| $@->type ("route_not_found")) { |
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next; |
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} |
| 342 |
if ($@->type ("short_data")) { |
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warn "(short_data, redo)\n"; |
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redo; |
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} |
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die; |
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} |
| 348 |
} |
| 349 |
if (defined $data) { |
| 350 |
return ($meta, $data); |
| 351 |
} |
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} |
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} |
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|
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die; |
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} |
| 357 |
|
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sub log { |
| 359 |
my ($self, $text) = @_; |
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my $time = POSIX::strftime "%H:%M:%S", localtime time; |
| 361 |
warn "$time $self->{id},$self->{p}{pri}: $text\n"; |
| 362 |
$self->{log} .= "$time $text\n"; |
| 363 |
} |
| 364 |
|
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sub feedback { |
| 366 |
my ($self, $prompt) = @_; |
| 367 |
$self->{input} = [$Coro::current, $prompt]; |
| 368 |
Coro::schedule; |
| 369 |
} |
| 370 |
|
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sub show { |
| 372 |
my ($self) = @_; |
| 373 |
|
| 374 |
"ID: $self->{id}\n" |
| 375 |
. "Title: $self->{p}{title}\n" |
| 376 |
. "Blocks#: " . @{$self->{p}{blk} || []} . "\n" |
| 377 |
. "Blocks: " . (join "", map { |
| 378 |
$_->{done} ? "+" : "-" |
| 379 |
} @{$self->{p}{blk} || []}) . "\n" . |
| 380 |
"" |
| 381 |
} |
| 382 |
|
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our $id; |
| 384 |
|
| 385 |
sub MAXSEG (){ 128*1024*1024 } |
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sub MINSEG (){ 6* 128*1024 } |
| 387 |
|
| 388 |
sub blocksize($) { |
| 389 |
return |
| 390 |
$_[0] >= 64*1024*1024 ? 1024*1024 |
| 391 |
: $_[0] >= 32*1024*1024 ? 512*1024 |
| 392 |
: $_[0] >= 1024*1024 ? 256*1024 |
| 393 |
: 128*1024; |
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} |
| 395 |
|
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sub start { |
| 397 |
my ($self) = @_; |
| 398 |
|
| 399 |
$self->{p}{pri} ||= 1; |
| 400 |
$self->{p}{state} ||= "examine"; |
| 401 |
|
| 402 |
$self->{job} =~ /\/([^\/]*)\.j$/ or die "$self->{job}: missing .j"; |
| 403 |
$self->{file} = "$DATA_HOME/$1.d"; |
| 404 |
sysopen $self->{fh}, $self->{file}, O_RDWR|O_CREAT, 0600 |
| 405 |
# $self->{fh} = aio_open $self->{file}, O_RDWR|O_CREAT, 0600 |
| 406 |
or die "$self->{file}: $!"; |
| 407 |
|
| 408 |
$self->{status} = "starting"; |
| 409 |
$self->{coro} = async { |
| 410 |
$self->save; |
| 411 |
|
| 412 |
for(;;) { |
| 413 |
my ($state, @args) = ref $self->{p}{state} ? @{$self->{p}{state}} : $self->{p}{state}; |
| 414 |
my $next = eval { $self->can ("state_$state")->($self, @args) }; |
| 415 |
if ($@) { |
| 416 |
$self->log ($@); |
| 417 |
$next = $self->feedback ("continue with state: "); |
| 418 |
} |
| 419 |
$self->log ($self->{status} = "STATE CHANGE: ". join ", ", ref $next ? @$next : $next); |
| 420 |
$self->{p}{state} = $next; |
| 421 |
$self->save; |
| 422 |
} |
| 423 |
}; |
| 424 |
} |
| 425 |
|
| 426 |
sub state_finish { |
| 427 |
my ($self, $save) = @_; |
| 428 |
|
| 429 |
if ($save) { |
| 430 |
aio_fsync $self->{fh}; |
| 431 |
close $self->{fh}; |
| 432 |
|
| 433 |
aio_unlink "$DONE_HOME/$self->{p}{title}"; |
| 434 |
aio_link $self->{file}, "$DONE_HOME/$self->{p}{title}" |
| 435 |
and die "link: $self->{file} => $DONE_HOME/$self->{p}{title}: $!"; |
| 436 |
aio_pathsync $DONE_HOME; |
| 437 |
} |
| 438 |
$self->clean; |
| 439 |
|
| 440 |
aio_unlink $self->{file}; |
| 441 |
|
| 442 |
$self->{status} = "finished"; |
| 443 |
$self->feedback ("finished"); |
| 444 |
terminate; |
| 445 |
} |
| 446 |
|
| 447 |
sub state_examine { |
| 448 |
my ($self) = @_; |
| 449 |
my $p = $self->{p}; |
| 450 |
|
| 451 |
$self->{status} = "initial fetch"; |
| 452 |
|
| 453 |
for (;;) { |
| 454 |
$self->log ("fetching $p->{key} (=$p->{title})"); |
| 455 |
|
| 456 |
($p->{meta}, $p->{data}) = fetch_uri 100, "freenet:$p->{key}"; |
| 457 |
$self->save; |
| 458 |
#use PApp::Util; print STDERR PApp::Util::dumpval [keys %{$meta->{document}[0]{split_file}}]; |
| 459 |
$self->log ("type $p->{meta}{document}[0]{info}{format}"); |
| 460 |
|
| 461 |
if (my $splitfile = $p->{meta}{document}[0]{split_file}) { |
| 462 |
return "splitfile"; |
| 463 |
} elsif ((defined $p->{data}) and (length $p->{data})) { |
| 464 |
syswrite $self->{fh}, delete $p->{data}; |
| 465 |
aio_fsync $self->{fh}; |
| 466 |
return ["finish", 1]; |
| 467 |
} |
| 468 |
|
| 469 |
$self->log ("EMPTY, retrying in an hour"); |
| 470 |
Coro::Timer::sleep 3600; |
| 471 |
} |
| 472 |
|
| 473 |
} |
| 474 |
|
| 475 |
sub state_splitfile { |
| 476 |
my ($self) = @_; |
| 477 |
my $p = $self->{p}; |
| 478 |
|
| 479 |
my $splitfile = $p->{meta}{document}[0]{split_file}; |
| 480 |
my $filesize = hex $splitfile->{size}; |
| 481 |
|
| 482 |
if ($splitfile->{algo_name} eq "OnionFEC_a_1_2") { |
| 483 |
my $data_packets = hex $splitfile->{block_count}; |
| 484 |
my $check_packets = hex $splitfile->{check_block_count}; |
| 485 |
|
| 486 |
my $blk = ($p->{blk} ||= []); |
| 487 |
|
| 488 |
unless (@$blk) { |
| 489 |
for (1..$data_packets) { |
| 490 |
push @$blk, { |
| 491 |
uri => $splitfile->{block}{sprintf "%x", $_}, |
| 492 |
}; |
| 493 |
} |
| 494 |
for (1..$check_packets) { |
| 495 |
push @$blk, { |
| 496 |
uri => $splitfile->{check_block}{sprintf "%x", $_}, |
| 497 |
}; |
| 498 |
} |
| 499 |
} |
| 500 |
|
| 501 |
my @segments; |
| 502 |
my $segments = 0; |
| 503 |
|
| 504 |
{ |
| 505 |
# that is a horrible algorithm :(, these freenet freaks are... java-disabled |
| 506 |
# hardcoding lots of magic parameters is soo dumb. |
| 507 |
my $size = $filesize; |
| 508 |
my $offset = 0; |
| 509 |
my $offset2 = ($filesize & ~(1024*1024-1)) + 1024*1024; # leave enough space after last data block |
| 510 |
my $idx = 0; |
| 511 |
my $idx2 = $data_packets; |
| 512 |
my @redundandy = (0,1,2); # maybe OnionFAC_a_1_2 means 1/2 redundancy(?) |
| 513 |
|
| 514 |
while ($size > 0) { |
| 515 |
my $segsize = $size >= MAXSEG ? MAXSEG : $size <= MINSEG ? MINSEG : $size; |
| 516 |
my $blksize = blocksize $segsize; |
| 517 |
my $seg = |
| 518 |
{ |
| 519 |
id => $segments++, |
| 520 |
todo => int (($segsize + $blksize - 1) / $blksize), |
| 521 |
done => 0, |
| 522 |
blk => [], |
| 523 |
blksize => $blksize, |
| 524 |
}; |
| 525 |
|
| 526 |
push @segments, $seg; |
| 527 |
$size -= $segsize; |
| 528 |
|
| 529 |
while ($segsize > 0) { |
| 530 |
push @{$seg->{blk}}, $idx; |
| 531 |
for ($blk->[$idx++]) { |
| 532 |
$_->{offset} = $offset; |
| 533 |
#$_->{size} = $blksize > $segsize ? $segsize : $blksize; # WRONG |
| 534 |
$_->{size} = $blksize; |
| 535 |
$_->{seg} = $seg; |
| 536 |
} |
| 537 |
|
| 538 |
$segsize -= $blksize; |
| 539 |
$offset += $blksize; |
| 540 |
|
| 541 |
if (($redundandy[0] += $redundandy[1]) >= $redundandy[2]) { |
| 542 |
$redundandy[0] -= $redundandy[2]; |
| 543 |
|
| 544 |
push @{$seg->{blk}}, $idx2; |
| 545 |
for ($blk->[$idx2++]) { |
| 546 |
$_->{offset} = $offset2; |
| 547 |
$_->{size} = $blksize; |
| 548 |
$_->{seg} = $seg; |
| 549 |
} |
| 550 |
|
| 551 |
$offset2 += $blksize; |
| 552 |
} |
| 553 |
} |
| 554 |
} |
| 555 |
|
| 556 |
$idx == $data_packets |
| 557 |
or die "$self->{id}/$p->{tile} $self->{job}\nidx $idx != data_packets $data_packets"; |
| 558 |
$idx2 == $data_packets + $check_packets |
| 559 |
or die "$self->{id}/$p->{tile} $self->{job}\nidx2 $idx2 != data_packets $data_packets + check_packets $check_packets"; |
| 560 |
} |
| 561 |
|
| 562 |
for (@$blk) { |
| 563 |
++$_->{seg}{done} if $_->{done}; |
| 564 |
delete $_->{htl}; |
| 565 |
} |
| 566 |
|
| 567 |
my $fail = 0; |
| 568 |
my $sig = new Coro::Signal; |
| 569 |
|
| 570 |
$self->{status} = "splitfile fetch (" . @$blk . " blocks)"; |
| 571 |
|
| 572 |
my @txn; |
| 573 |
|
| 574 |
for (;;) { |
| 575 |
for my $id (0 .. $#$blk) { |
| 576 |
my $blk = $blk->[$id]; |
| 577 |
|
| 578 |
next if $txn[$id] || $blk->{done} || $blk->{seg}{todo} <= $blk->{seg}{done}; |
| 579 |
|
| 580 |
my $htl = $HTL[$blk->{htl}++ % @HTL]; |
| 581 |
my $pri = int time + $htl / 20 * 7200 * rand; |
| 582 |
|
| 583 |
#warn $self->{id} . ", GET<$htl, $pri>\n";#d# |
| 584 |
$txn[$id] ||= txn_client_get pri => $pri, uri => $blk->{uri}, htl => $htl, cb => sub { |
| 585 |
undef $txn[$id]; |
| 586 |
|
| 587 |
my $seg = $blk->{seg}; |
| 588 |
|
| 589 |
my ($meta, $data) = eval { @{ $_[0]->result } }; |
| 590 |
|
| 591 |
if (defined $data) { |
| 592 |
$blk->{size} == length $data |
| 593 |
or die sprintf "block $id expected size %d, got %d\n", $blk->{size}, length $data; |
| 594 |
|
| 595 |
(length $data) == (aio_write $self->{fh}, $blk->{offset}, (length $data), $data, 0) |
| 596 |
or die "unable to write chunk to disk, not setting valid flag"; |
| 597 |
aio_fsync $self->{fh}; |
| 598 |
|
| 599 |
$blk->{done} = 1; |
| 600 |
$blk->{meta} = $meta->{raw} if length $meta->{raw};#d# |
| 601 |
$seg->{done}++; |
| 602 |
$self->save; |
| 603 |
|
| 604 |
$::htl_sum += $htl; |
| 605 |
$::htl_cnt++; |
| 606 |
|
| 607 |
$self->log (sprintf "got block $seg->{id}.$id %d ($seg->{done}/$seg->{todo}) at htl $htl (%f) and pri $pri", |
| 608 |
length $data, $::htl_sum / $::htl_cnt); |
| 609 |
} else { |
| 610 |
if ($@) { |
| 611 |
if ($@->type ("data_not_found")) { |
| 612 |
# nop |
| 613 |
} elsif ($@->type ("network_error")) { |
| 614 |
$self->log ("$@, retrying in 1s"); |
| 615 |
CORE::sleep 1; |
| 616 |
} else { |
| 617 |
$self->log ("$@"); |
| 618 |
} |
| 619 |
} |
| 620 |
++$fail; |
| 621 |
} |
| 622 |
$self->{status} = "splitfile fetch ($seg->{done}/$seg->{todo}, $fail failed)"; |
| 623 |
|
| 624 |
$sig->send; |
| 625 |
}; |
| 626 |
} |
| 627 |
|
| 628 |
for my $seg (@segments) { |
| 629 |
if ($seg->{done} >= $seg->{todo} && !$seg->{finished}) { |
| 630 |
|
| 631 |
$self->log ("segment done, cancelling segment $seg->{id}"); |
| 632 |
for my $id (@{$seg->{blk}}) { |
| 633 |
(delete $txn[$id])->cancel if $txn[$id]; |
| 634 |
} |
| 635 |
|
| 636 |
my $verify; |
| 637 |
for my $id (@{$seg->{blk}}) { |
| 638 |
my $blk = $blk->[$id]; |
| 639 |
if ($blk->{done}) { |
| 640 |
aio_read $self->{fh}, $blk->{offset}, $blk->{size}, my $buf, 0; |
| 641 |
|
| 642 |
my $k1 = Net::FCP::Util::extract_chk_hash $blk->{uri}; |
| 643 |
my $k2 = Net::FCP::Util::generate_chk_hash $blk->{meta}, $buf; |
| 644 |
|
| 645 |
if ($k1 ne $k2) { |
| 646 |
$verify .= "v"; |
| 647 |
#warn sprintf "$p->{title} block $id BROKEN (%s != %s)", (unpack "H*", $k1), (unpack "H*", $k2); |
| 648 |
$blk->{done} = 0; |
| 649 |
$seg->{done}--; |
| 650 |
$self->save; |
| 651 |
} else { |
| 652 |
$verify .= "V"; |
| 653 |
} |
| 654 |
} |
| 655 |
} |
| 656 |
$self->log ("verified segment $seg->{id}"); |
| 657 |
$self->log ($verify); |
| 658 |
|
| 659 |
if ($seg->{done} >= $seg->{todo} && !$seg->{finished}) { |
| 660 |
$self->log ("verified segment OK $seg->{id}"); |
| 661 |
$seg->{finished}++; |
| 662 |
$segments--; |
| 663 |
} else { |
| 664 |
$self->log ("verified segment NOT OK $seg->{id}"); |
| 665 |
} |
| 666 |
} |
| 667 |
} |
| 668 |
|
| 669 |
last unless $segments; |
| 670 |
|
| 671 |
$sig->wait; |
| 672 |
} |
| 673 |
|
| 674 |
$self->log ("decoding < $self->{job} $self->{file} $filesize >"); |
| 675 |
|
| 676 |
for my $seg (@segments) { |
| 677 |
my @part; |
| 678 |
my @idx; |
| 679 |
my @blk = map $blk->[$_], sort { $a <=> $b } @{$seg->{blk}}; |
| 680 |
|
| 681 |
for my $id (0 .. $#blk) { |
| 682 |
my $blk = $blk[$id]; |
| 683 |
next unless $blk->{done}; |
| 684 |
|
| 685 |
push @part, [$self->{fh}, $blk->{offset}]; |
| 686 |
push @idx, $id; |
| 687 |
|
| 688 |
last if @idx == $seg->{todo}; |
| 689 |
} |
| 690 |
|
| 691 |
my $fec = new Algorithm::FEC |
| 692 |
$seg->{todo}, |
| 693 |
scalar @blk, |
| 694 |
$seg->{blksize}; |
| 695 |
|
| 696 |
$fec->shuffle (\@part, \@idx); |
| 697 |
|
| 698 |
# now copy check blocks to their destination position |
| 699 |
for my $i (0 .. $#idx) { |
| 700 |
next if $idx[$i] == $i; |
| 701 |
|
| 702 |
my $src = $part[$i]; |
| 703 |
$part[$i] = [$self->{fh}, $blk[$i]{offset}]; |
| 704 |
$fec->copy ($src, $part[$i]); |
| 705 |
} |
| 706 |
|
| 707 |
$fec->set_decode_blocks (\@part, \@idx); |
| 708 |
$fec->decode; |
| 709 |
} |
| 710 |
|
| 711 |
my $sha1 = new Digest::SHA1; |
| 712 |
open my $dd, "-|", "head -c$filesize \Q$self->{file}\E" |
| 713 |
or die "DD: $!"; |
| 714 |
#$dd = Coro::Handle::unblock $dd; |
| 715 |
$sha1->addfile ($dd); |
| 716 |
$sha1 = $sha1->hexdigest; |
| 717 |
|
| 718 |
if (exists $p->{meta}{document}[0]{info}{checksum} |
| 719 |
and $p->{meta}{document}[0]{info}{checksum} ne $sha1) { |
| 720 |
$self->log ("META: $p->{meta}{document}[0]{info}{checksum} and real checksum $sha1 for $filesize DIFFER"); |
| 721 |
# $self->feedback ("CHECKSUM ERROR"); |
| 722 |
# terminate; |
| 723 |
} |
| 724 |
|
| 725 |
truncate $self->{fh}, $filesize; |
| 726 |
sysseek $self->{fh}, 0, 0; |
| 727 |
|
| 728 |
return ["finish", 1]; |
| 729 |
} else { |
| 730 |
$self->log ("splitfile algo '$splitfile->{algo_name}' unknown"); |
| 731 |
$self->feedback ("algo unknown"); |
| 732 |
terminate; |
| 733 |
} |
| 734 |
} |
| 735 |
|
| 736 |
package main; |
| 737 |
|
| 738 |
$|=1; |
| 739 |
|
| 740 |
for (<\Q$QUEUE_HOME\E/*.j>) { |
| 741 |
job->new_from_file ($_); |
| 742 |
print "J"; |
| 743 |
} |
| 744 |
print "\n"; |
| 745 |
|
| 746 |
open my $stdin , "<&0" or die; |
| 747 |
open my $stdout, ">&1" or die; |
| 748 |
cmdline unblock $stdin, unblock $stdout; |
| 749 |
|
| 750 |
EV::loop; |
| 751 |
|
