lib/CloudStore/Store.pm

   1 package CloudStore::Store;
   2 use warnings;
   3 use strict;
   4
   5 use lib 'lib';
   6 use base 'CloudStore::MD5sum';
   7 use CloudStore::API;
   8
   9 use autodie;
  10 use JSON::XS;
  11 use File::Path qw(make_path);
  12 use File::Slurp qw();
  13 use Digest::MD5 qw(md5_base64);
  14 use Data::Dump qw(dump);
  15 use Carp qw(confess);
  16
  17 use WarnColor;
  18
  19 sub new {
  20         my ($class,$group) = @_;
  21
  22         my $self = {
  23                 api => CloudStore::API->new( $group ),
  24         };
  25         bless $self, $class;
  26
  27         $self->{md5pool} = $self->{api}->{md5}->{dir};
  28
  29         warn "# new ",dump $self if $ENV{DEBUG};
  30
  31         return $self;
  32 }
  33
  34 sub user_set {
  35         my ( $self,$data ) = @_;
  36 }
  37
  38 sub user_get {
  39         my ( $self,$data ) = @_;
  40 }
  41
  42 sub mkbasedir {
  43         my $dir = shift;
  44         $dir =~ s{/[^/]+$}{}; # strip filename
  45         mkdir $dir unless -e $dir;
  46 }
  47
  48 sub modify_file {
  49         my ( $self,$data ) = @_;
  50
  51         if ( $data->{file} =~ m{^(.*/)?.sync/send/([^/]+)$} ) {
  52                 my $from_dir = $1;
  53                 warn "SEND $2 from $from_dir\n";
  54                 my $sent_files;
  55                 open(my $send, '<', $self->blob_path($data) );
  56                 while(<$send>) {
  57                         s/[\n\r]+$//;
  58
  59                         my ( $to, $file ) = split(/\s+/,$_,2);
  60                         my ( undef, undef, $uid, $gid, undef, undef, $email, $dir, $shell ) =
  61                                 getpwnam $to;
  62
  63                         my $from = $data;
  64                         $from->{file} = $from_dir . $file;
  65                         my $from_path = $self->blob_path($from);
  66
  67                         if ( ! -r $from_path ) {
  68                                 warn "ERROR: $from_path: $!";
  69                                 next;
  70                         }
  71
  72                         my $to_path = "$dir/received/$file";
  73                         mkbasedir $to_path;
  74
  75                         warn "SEND $from_path -> $to_path\n";
  76                         unlink $to_path if -e $to_path; # FIXME why we need this?
  77                         $sent_files->{$to} += link $from_path, $to_path;
  78                         # FIXME cross-shard
  79                         my $md5 = $self->md5sum($data)->get( $from_dir . $file ) || warn "no md5 for $from_dir$file";
  80                         $self->md5sum({login => $to})->put( "/received/$file" => $md5 );
  81                 }
  82
  83                 warn "SENT ",dump $sent_files;
  84
  85                 return 0; # skip dedup
  86         } elsif ( $data->{file} =~ m{^(.*/)?.sync/pending/([^/]+)$} ) {
  87                 my $from_dir = $1;
  88                 warn "PENDIG $2 from $from_dir";
  89                 open(my $pend, '<', $self->blob_path($data) );
  90                 while(<$pend>) {
  91                         s/[\n\r]+$//;
  92
  93                         if ( m/^DELETED\#(.+)$/ ) {
  94                                 my $path = $self->blob_path($data => $from_dir . $1 );
  95                                 if ( -e $path ) {
  96                                         warn "UNLINK $path";
  97                                         -d $path ? rmdir $path : unlink $path || warn "ERROR: unlink $path $!";
  98                                         next;
  99                                 } else {
 100                                         warn "MISSING $path to unlink";
 101                                         next;
 102                                 }
 103                         } elsif ( ! /^(MOVED|RENAMED)\#/ ) {
 104                                 warn "skip $_\n";
 105                                 next;
 106                         }
 107
 108                         my ( undef, $from, $to ) = split(/\#/,$_,3);
 109
 110                         my ( $from_path, $to_path ) = map {
 111                                 my $tmp = $data;
 112                                 $tmp->{file} = $from_dir . $_;
 113                                 $self->blob_path($tmp);
 114                         } ( $from, $to );
 115
 116                         if ( ! -e $from_path ) {
 117                                 warn "SKIPPED $from_path: $!";
 118                                 next;
 119                         }
 120
 121                         warn "MV $from_path -> $to_path";
 122                         mkbasedir $to_path;
 123                         rename $from_path, $to_path;
 124
 125                         my $md5 = $self->md5sum($data)->get( $from_dir . $from );
 126                         if ( ! $md5 ) {
 127                                 warn "ERROR: no md5sum $from_dir $from " unless $md5;
 128                                 next;
 129                         }
 130
 131                         $self->md5sum($data)->out( $from_dir . $from );
 132                         $self->md5sum($data)->put( $from_dir . $to => $md5 );
 133
 134                         warn "$md5 moved to $from_dir $to";
 135                 }
 136
 137                 return 0; # skip dedup
 138         }
 139
 140         #return $file->{size} > 4096 ? 1 : 0; # FIXME
 141         return 1; # dedup
 142 }
 143
 144 # never called by rsync directly!
 145 sub new_file {
 146         my ( $self,$data ) = @_;
 147 #       $self->file_set($data);
 148 }
 149
 150 sub removed_file {
 151         my ( $self, $data ) = @_;
 152
 153         my $md5 = $self->md5sum($data)->get( $data->{file} );
 154         return unless $md5; # directories don't have md5sums
 155         my $path = $self->{md5pool} . '/' . $md5;
 156         my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,
 157                 $atime,$mtime,$ctime,$blksize,$blocks)
 158                         = stat($path);
 159
 160         my $user = $self->{api}->user_info($data->{login});
 161
 162         if ( $nlink == 1 && $uid == $user->{uid} ) {
 163                 $self->append( $user, 'removed', -$size, $uid, $data->{file} );
 164                 my $id = getpwnam 'md5';
 165                 chown $id,$gid, $path;
 166                 warn "# chown $id $gid $path";
 167         }
 168
 169         $self->md5sum($data)->out( $data->{file} );
 170 }
 171
 172 sub make_dir {
 173         my ( $self, $data ) = @_;
 174
 175 }
 176
 177 sub new_link {
 178         my ( $self, $data ) = @_;
 179
 180         warn "# new_link ",dump $data;
 181
 182         if ( $data->{file} =~ m{^(.*/?)\.send/([^/]+)/(.+)$} ) {
 183                 my ( $dir, $to, $name ) = ( $1, $2, $3 );
 184                 my $path = $self->blob_path($data);
 185                 my $link_to = readlink $path;
 186                 warn "$link_to";
 187                 if ( $link_to =~ s{^\Q/rsyncd-munged/\E}{/} ) {
 188
 189                         my $s = $path;
 190                         $s =~ s{/[^/]+$}{}; # strip filename
 191                         while ( $link_to =~ s{/../}{/} ) {
 192                                 $s =~ s{/[^/]+$}{} || die "can't strip $s";
 193                                 warn "## simplify $s $link_to\n";
 194                         }
 195                         $s .= $link_to;
 196
 197                         my $d = $self->blob_path({
 198                                 pid => $data->{pid},
 199                                 file => $name
 200                         });
 201
 202                         # $name can contain directories so we must create them
 203                         mkbasedir $d;
 204
 205                         if ( ! -e $s ) {
 206                                 warn "ERROR: can't find source $s";
 207                         } else {
 208
 209                                 warn "link $s -> $d\n";
 210                                 link $s, $d;
 211
 212                                 my ($l,$f) = ($1,$2) if $s =~ m{users/([^/]+)/blob/(.+)};
 213
 214 #                               my $origin = $self->file_get({
 215 #                                       login => $l,
 216 #                                       file  => $f,
 217 #                               });
 218 #                               $self->new_file($origin);
 219                                 warn "INFO: sent file ",dump($l,$f);
 220                                 my $md5 = $self->md5sum($data)->get($s);
 221                                 $self->md5sum({ login => $to })->put($d => $md5 );
 222                                 # FIXME broken!
 223                         }
 224
 225
 226                 } else {
 227                         warn "ERROR: can't SEND To:$to Name:$name Link:$link_to";
 228                 }
 229         }
 230 }
 231
 232 sub init_pid_login {
 233         my ( $self, $pid, $login ) = @_;
 234
 235         $login =~ s/\@.+//;
 236         $self->{pid}->{$pid} = $self->{api}->user_info($login);
 237
 238         warn "created $pid";
 239 }
 240
 241 sub cleanup_pid {
 242         my ( $self, $pid ) = @_;
 243
 244         $self->md5sum_close;
 245
 246         delete $self->{pid}->{$pid};
 247         warn "removed $pid";
 248 }
 249
 250 sub rsync_log {
 251         my ( $self, $data ) = @_;
 252         if ( $data =~ m/\[(\d+)\] rsync \w+ (\S+) \w+ (\S+)/ ) {
 253                 my ( $pid, $module, $login ) = ( $1, $2, $3 );
 254                 $self->init_pid_login( $pid, $login );
 255         } elsif ( $data =~ m/\[(\d+)\] sent \S+ bytes\s+received \S+ bytes/ ) {
 256                 my $pid = $1;
 257                 $self->cleanup_pid( $pid );
 258         } else {
 259                 warn "## rsync_log $data";
 260         }
 261 }
 262
 263 sub blob_path {
 264         my ( $self, $data, $path ) = @_;
 265         my $blob = $self->{pid}->{ $data->{pid} }->{dir} || die "no dir for $data->{pid} in ",dump( $self->{pid} );
 266         $blob .= '/' . ( defined $path ? $path : $data->{file} );
 267         return $blob;
 268 }
 269
 270
 271 sub rsync_transfer {
 272         my ( $self,$data ) = @_;
 273
 274         my $path = $self->blob_path($data);
 275
 276         if ( $data->{itemize} =~ m/^[c>]([fdL])/ ) { # received change/create
 277                 my $type = $1;
 278
 279                 if ( $type eq 'f' ) {
 280                         $self->modify_file( $data ) && # selective dedup
 281                         $self->dedup( $data, $path );
 282                 } elsif ( $type eq 'd' ) {
 283                         $self->make_dir( $data );
 284                 } elsif ( $type eq 'L' ) {
 285                         $self->new_link( $data );
 286                 } else {
 287                         die "unknown type $type ", dump $data;
 288                 }
 289         } elsif ( $data->{itemize} =~ m/\*deleting/ ) {
 290                 $self->removed_file($data);
 291         } else {
 292                 warn "IGNORED ",dump($data) if $ENV{DEBUG};
 293         }
 294         return $data;
 295 }
 296
 297 sub append {
 298         my $self = shift @_;
 299         $self->{api}->append( @_ );
 300 }
 301
 302 sub md5pool {
 303         my ( $self, $data ) = @_;
 304
 305         my $pool = $self->{md5pool} || die "no md5pool in ",dump $self;
 306         mkdir $pool unless -e $pool;
 307
 308         my $md5 = $data->{md5} || die "no md5 in ",dump $data;
 309         my $path = $self->blob_path($data);
 310
 311         my $pool_md5 = "$pool/$md5";
 312
 313         if ( -e $pool_md5 ) {
 314                 warn "dedup hit $md5 $path\n";
 315
 316                 my ($pool_uid,$pool_size) = (stat($pool_md5))[4,7];
 317                 my $user = $self->{api}->user_info( $data->{login} );
 318
 319                 if ( $pool_uid != $self->{api}->{md5}->{uid} ) {
 320                         chown $self->{api}->{md5}->{uid}, $self->{api}->{md5}->{gid}, $pool_md5;
 321                         chmod oct("0444"), $pool_md5;
 322                         my $steal_user = $self->{api}->user_info( $pool_uid );
 323                         $self->append( $steal_user, 'dedup-steal', $pool_size, $pool_uid, $data->{file} );
 324                 }
 325                 $self->append( $user, 'dedup', $pool_size, $pool_uid, $data->{file} );
 326
 327                 my $dedup = $path . '.dedup';
 328                 rename $path, $dedup;
 329                 link "$pool/$md5", $path;
 330                 unlink $dedup;
 331         } else {
 332                 link $path, "$pool/$md5";
 333                 warn "dedup +++ $md5 $path";
 334         }
 335
 336         $self->md5sum($data)->put( $data->{file} => $md5 );
 337 }
 338
 339 my $empty_md5 = " " x 32;
 340
 341 sub dedup {
 342         my ( $self, $data, $path ) = @_;
 343
 344         if ( $data->{file} =~ /^(.+\/)?md5sum$/ ) {
 345                 my $dir = $1;
 346                 my $imported = 0;
 347                 warn "IMPORT ", $data->{file}, "\n";
 348                 open(my $md5sum, '<', $path);
 349                 while(<$md5sum>) {
 350                         chomp;
 351                         my ( $md5, $file ) = split(/\s+/,$_,2);
 352                         if ( ! -e "$self->{md5path}/$md5" ) {
 353                                 warn "MISSING $md5 $file\n";
 354                                 next;
 355                         }
 356                         my $new = {
 357                                 pid => $data->{pid},
 358                                 file => "$dir$file",
 359                                 md5 => $md5,
 360                         };
 361                         my $new_path = $self->blob_path($new);
 362                         if ( ! -e $new_path ) {
 363                                 $self->{api}->send_file( 'md5' => $md5, $data->{login}, "$dir$file" );
 364                                 $self->md5pool( $new );
 365                         } else {
 366                                 $self->md5pool( $new );
 367                         }
 368                 }
 369                 print "INFO imported $imported files from ",dump($data);
 370         }
 371
 372         if ( $data->{md5} ne $empty_md5 ) {
 373                 $self->md5sum($data)->put( $data->{file} => $data->{md5} );
 374                 $self->md5pool( $data );
 375         } else {
 376                 warn "empty md5", dump $data;
 377         }
 378 }
 379
 380 1;