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Diffstat (limited to 'git-cvsserver.perl')
| -rwxr-xr-x | git-cvsserver.perl | 2931 |
1 files changed, 2931 insertions, 0 deletions
diff --git a/git-cvsserver.perl b/git-cvsserver.perl new file mode 100755 index 0000000000..3e7bf5b54a --- /dev/null +++ b/git-cvsserver.perl @@ -0,0 +1,2931 @@ +#!/usr/bin/perl + +#### +#### This application is a CVS emulation layer for git. +#### It is intended for clients to connect over SSH. +#### See the documentation for more details. +#### +#### Copyright The Open University UK - 2006. +#### +#### Authors: Martyn Smith <martyn@catalyst.net.nz> +#### Martin Langhoff <martin@catalyst.net.nz> +#### +#### +#### Released under the GNU Public License, version 2. +#### +#### + +use strict; +use warnings; +use bytes; + +use Fcntl; +use File::Temp qw/tempdir tempfile/; +use File::Basename; + +my $log = GITCVS::log->new(); +my $cfg; + +my $DATE_LIST = { + Jan => "01", + Feb => "02", + Mar => "03", + Apr => "04", + May => "05", + Jun => "06", + Jul => "07", + Aug => "08", + Sep => "09", + Oct => "10", + Nov => "11", + Dec => "12", +}; + +# Enable autoflush for STDOUT (otherwise the whole thing falls apart) +$| = 1; + +#### Definition and mappings of functions #### + +my $methods = { + 'Root' => \&req_Root, + 'Valid-responses' => \&req_Validresponses, + 'valid-requests' => \&req_validrequests, + 'Directory' => \&req_Directory, + 'Entry' => \&req_Entry, + 'Modified' => \&req_Modified, + 'Unchanged' => \&req_Unchanged, + 'Questionable' => \&req_Questionable, + 'Argument' => \&req_Argument, + 'Argumentx' => \&req_Argument, + 'expand-modules' => \&req_expandmodules, + 'add' => \&req_add, + 'remove' => \&req_remove, + 'co' => \&req_co, + 'update' => \&req_update, + 'ci' => \&req_ci, + 'diff' => \&req_diff, + 'log' => \&req_log, + 'rlog' => \&req_log, + 'tag' => \&req_CATCHALL, + 'status' => \&req_status, + 'admin' => \&req_CATCHALL, + 'history' => \&req_CATCHALL, + 'watchers' => \&req_CATCHALL, + 'editors' => \&req_CATCHALL, + 'annotate' => \&req_annotate, + 'Global_option' => \&req_Globaloption, + #'annotate' => \&req_CATCHALL, +}; + +############################################## + + +# $state holds all the bits of information the clients sends us that could +# potentially be useful when it comes to actually _doing_ something. +my $state = { prependdir => '' }; +$log->info("--------------- STARTING -----------------"); + +my $TEMP_DIR = tempdir( CLEANUP => 1 ); +$log->debug("Temporary directory is '$TEMP_DIR'"); + +# if we are called with a pserver argument, +# deal with the authentication cat before entering the +# main loop +$state->{method} = 'ext'; +if (@ARGV && $ARGV[0] eq 'pserver') { + $state->{method} = 'pserver'; + my $line = <STDIN>; chomp $line; + unless( $line eq 'BEGIN AUTH REQUEST') { + die "E Do not understand $line - expecting BEGIN AUTH REQUEST\n"; + } + $line = <STDIN>; chomp $line; + req_Root('root', $line) # reuse Root + or die "E Invalid root $line \n"; + $line = <STDIN>; chomp $line; + unless ($line eq 'anonymous') { + print "E Only anonymous user allowed via pserver\n"; + print "I HATE YOU\n"; + } + $line = <STDIN>; chomp $line; # validate the password? + $line = <STDIN>; chomp $line; + unless ($line eq 'END AUTH REQUEST') { + die "E Do not understand $line -- expecting END AUTH REQUEST\n"; + } + print "I LOVE YOU\n"; + # and now back to our regular programme... +} + +# Keep going until the client closes the connection +while (<STDIN>) +{ + chomp; + + # Check to see if we've seen this method, and call appropriate function. + if ( /^([\w-]+)(?:\s+(.*))?$/ and defined($methods->{$1}) ) + { + # use the $methods hash to call the appropriate sub for this command + #$log->info("Method : $1"); + &{$methods->{$1}}($1,$2); + } else { + # log fatal because we don't understand this function. If this happens + # we're fairly screwed because we don't know if the client is expecting + # a response. If it is, the client will hang, we'll hang, and the whole + # thing will be custard. + $log->fatal("Don't understand command $_\n"); + die("Unknown command $_"); + } +} + +$log->debug("Processing time : user=" . (times)[0] . " system=" . (times)[1]); +$log->info("--------------- FINISH -----------------"); + +# Magic catchall method. +# This is the method that will handle all commands we haven't yet +# implemented. It simply sends a warning to the log file indicating a +# command that hasn't been implemented has been invoked. +sub req_CATCHALL +{ + my ( $cmd, $data ) = @_; + $log->warn("Unhandled command : req_$cmd : $data"); +} + + +# Root pathname \n +# Response expected: no. Tell the server which CVSROOT to use. Note that +# pathname is a local directory and not a fully qualified CVSROOT variable. +# pathname must already exist; if creating a new root, use the init +# request, not Root. pathname does not include the hostname of the server, +# how to access the server, etc.; by the time the CVS protocol is in use, +# connection, authentication, etc., are already taken care of. The Root +# request must be sent only once, and it must be sent before any requests +# other than Valid-responses, valid-requests, UseUnchanged, Set or init. +sub req_Root +{ + my ( $cmd, $data ) = @_; + $log->debug("req_Root : $data"); + + $state->{CVSROOT} = $data; + + $ENV{GIT_DIR} = $state->{CVSROOT} . "/"; + unless (-d $ENV{GIT_DIR} && -e $ENV{GIT_DIR}.'HEAD') { + print "E $ENV{GIT_DIR} does not seem to be a valid GIT repository\n"; + print "E \n"; + print "error 1 $ENV{GIT_DIR} is not a valid repository\n"; + return 0; + } + + my @gitvars = `git-config -l`; + if ($?) { + print "E problems executing git-config on the server -- this is not a git repository or the PATH is not set correctly.\n"; + print "E \n"; + print "error 1 - problem executing git-config\n"; + return 0; + } + foreach my $line ( @gitvars ) + { + next unless ( $line =~ /^(.*?)\.(.*?)(?:\.(.*?))?=(.*)$/ ); + unless ($3) { + $cfg->{$1}{$2} = $4; + } else { + $cfg->{$1}{$2}{$3} = $4; + } + } + + unless ( ($cfg->{gitcvs}{$state->{method}}{enabled} + and $cfg->{gitcvs}{$state->{method}}{enabled} =~ /^\s*(1|true|yes)\s*$/i) + or ($cfg->{gitcvs}{enabled} + and $cfg->{gitcvs}{enabled} =~ /^\s*(1|true|yes)\s*$/i) ) + { + print "E GITCVS emulation needs to be enabled on this repo\n"; + print "E the repo config file needs a [gitcvs] section added, and the parameter 'enabled' set to 1\n"; + print "E \n"; + print "error 1 GITCVS emulation disabled\n"; + return 0; + } + + my $logfile = $cfg->{gitcvs}{$state->{method}}{logfile} || $cfg->{gitcvs}{logfile}; + if ( $logfile ) + { + $log->setfile($logfile); + } else { + $log->nofile(); + } + + return 1; +} + +# Global_option option \n +# Response expected: no. Transmit one of the global options `-q', `-Q', +# `-l', `-t', `-r', or `-n'. option must be one of those strings, no +# variations (such as combining of options) are allowed. For graceful +# handling of valid-requests, it is probably better to make new global +# options separate requests, rather than trying to add them to this +# request. +sub req_Globaloption +{ + my ( $cmd, $data ) = @_; + $log->debug("req_Globaloption : $data"); + $state->{globaloptions}{$data} = 1; +} + +# Valid-responses request-list \n +# Response expected: no. Tell the server what responses the client will +# accept. request-list is a space separated list of tokens. +sub req_Validresponses +{ + my ( $cmd, $data ) = @_; + $log->debug("req_Validresponses : $data"); + + # TODO : re-enable this, currently it's not particularly useful + #$state->{validresponses} = [ split /\s+/, $data ]; +} + +# valid-requests \n +# Response expected: yes. Ask the server to send back a Valid-requests +# response. +sub req_validrequests +{ + my ( $cmd, $data ) = @_; + + $log->debug("req_validrequests"); + + $log->debug("SEND : Valid-requests " . join(" ",keys %$methods)); + $log->debug("SEND : ok"); + + print "Valid-requests " . join(" ",keys %$methods) . "\n"; + print "ok\n"; +} + +# Directory local-directory \n +# Additional data: repository \n. Response expected: no. Tell the server +# what directory to use. The repository should be a directory name from a +# previous server response. Note that this both gives a default for Entry +# and Modified and also for ci and the other commands; normal usage is to +# send Directory for each directory in which there will be an Entry or +# Modified, and then a final Directory for the original directory, then the +# command. The local-directory is relative to the top level at which the +# command is occurring (i.e. the last Directory which is sent before the +# command); to indicate that top level, `.' should be sent for +# local-directory. +sub req_Directory +{ + my ( $cmd, $data ) = @_; + + my $repository = <STDIN>; + chomp $repository; + + + $state->{localdir} = $data; + $state->{repository} = $repository; + $state->{path} = $repository; + $state->{path} =~ s/^$state->{CVSROOT}\///; + $state->{module} = $1 if ($state->{path} =~ s/^(.*?)(\/|$)//); + $state->{path} .= "/" if ( $state->{path} =~ /\S/ ); + + $state->{directory} = $state->{localdir}; + $state->{directory} = "" if ( $state->{directory} eq "." ); + $state->{directory} .= "/" if ( $state->{directory} =~ /\S/ ); + + if ( (not defined($state->{prependdir}) or $state->{prependdir} eq '') and $state->{localdir} eq "." and $state->{path} =~ /\S/ ) + { + $log->info("Setting prepend to '$state->{path}'"); + $state->{prependdir} = $state->{path}; + foreach my $entry ( keys %{$state->{entries}} ) + { + $state->{entries}{$state->{prependdir} . $entry} = $state->{entries}{$entry}; + delete $state->{entries}{$entry}; + } + } + + if ( defined ( $state->{prependdir} ) ) + { + $log->debug("Prepending '$state->{prependdir}' to state|directory"); + $state->{directory} = $state->{prependdir} . $state->{directory} + } + $log->debug("req_Directory : localdir=$data repository=$repository path=$state->{path} directory=$state->{directory} module=$state->{module}"); +} + +# Entry entry-line \n +# Response expected: no. Tell the server what version of a file is on the +# local machine. The name in entry-line is a name relative to the directory +# most recently specified with Directory. If the user is operating on only +# some files in a directory, Entry requests for only those files need be +# included. If an Entry request is sent without Modified, Is-modified, or +# Unchanged, it means the file is lost (does not exist in the working +# directory). If both Entry and one of Modified, Is-modified, or Unchanged +# are sent for the same file, Entry must be sent first. For a given file, +# one can send Modified, Is-modified, or Unchanged, but not more than one +# of these three. +sub req_Entry +{ + my ( $cmd, $data ) = @_; + + #$log->debug("req_Entry : $data"); + + my @data = split(/\//, $data); + + $state->{entries}{$state->{directory}.$data[1]} = { + revision => $data[2], + conflict => $data[3], + options => $data[4], + tag_or_date => $data[5], + }; + + $log->info("Received entry line '$data' => '" . $state->{directory} . $data[1] . "'"); +} + +# Questionable filename \n +# Response expected: no. Additional data: no. Tell the server to check +# whether filename should be ignored, and if not, next time the server +# sends responses, send (in a M response) `?' followed by the directory and +# filename. filename must not contain `/'; it needs to be a file in the +# directory named by the most recent Directory request. +sub req_Questionable +{ + my ( $cmd, $data ) = @_; + + $log->debug("req_Questionable : $data"); + $state->{entries}{$state->{directory}.$data}{questionable} = 1; +} + +# add \n +# Response expected: yes. Add a file or directory. This uses any previous +# Argument, Directory, Entry, or Modified requests, if they have been sent. +# The last Directory sent specifies the working directory at the time of +# the operation. To add a directory, send the directory to be added using +# Directory and Argument requests. +sub req_add +{ + my ( $cmd, $data ) = @_; + + argsplit("add"); + + my $updater = GITCVS::updater->new($state->{CVSROOT}, $state->{module}, $log); + $updater->update(); + + argsfromdir($updater); + + my $addcount = 0; + + foreach my $filename ( @{$state->{args}} ) + { + $filename = filecleanup($filename); + + my $meta = $updater->getmeta($filename); + my $wrev = revparse($filename); + + if ($wrev && $meta && ($wrev < 0)) + { + # previously removed file, add back + $log->info("added file $filename was previously removed, send 1.$meta->{revision}"); + + print "MT +updated\n"; + print "MT text U \n"; + print "MT fname $filename\n"; + print "MT newline\n"; + print "MT -updated\n"; + + unless ( $state->{globaloptions}{-n} ) + { + my ( $filepart, $dirpart ) = filenamesplit($filename,1); + + print "Created $dirpart\n"; + print $state->{CVSROOT} . "/$state->{module}/$filename\n"; + + # this is an "entries" line + my $kopts = kopts_from_path($filepart); + $log->debug("/$filepart/1.$meta->{revision}//$kopts/"); + print "/$filepart/1.$meta->{revision}//$kopts/\n"; + # permissions + $log->debug("SEND : u=$meta->{mode},g=$meta->{mode},o=$meta->{mode}"); + print "u=$meta->{mode},g=$meta->{mode},o=$meta->{mode}\n"; + # transmit file + transmitfile($meta->{filehash}); + } + + next; + } + + unless ( defined ( $state->{entries}{$filename}{modified_filename} ) ) + { + print "E cvs add: nothing known about `$filename'\n"; + next; + } + # TODO : check we're not squashing an already existing file + if ( defined ( $state->{entries}{$filename}{revision} ) ) + { + print "E cvs add: `$filename' has already been entered\n"; + next; + } + + my ( $filepart, $dirpart ) = filenamesplit($filename, 1); + + print "E cvs add: scheduling file `$filename' for addition\n"; + + print "Checked-in $dirpart\n"; + print "$filename\n"; + my $kopts = kopts_from_path($filepart); + print "/$filepart/0//$kopts/\n"; + + $addcount++; + } + + if ( $addcount == 1 ) + { + print "E cvs add: use `cvs commit' to add this file permanently\n"; + } + elsif ( $addcount > 1 ) + { + print "E cvs add: use `cvs commit' to add these files permanently\n"; + } + + print "ok\n"; +} + +# remove \n +# Response expected: yes. Remove a file. This uses any previous Argument, +# Directory, Entry, or Modified requests, if they have been sent. The last +# Directory sent specifies the working directory at the time of the +# operation. Note that this request does not actually do anything to the +# repository; the only effect of a successful remove request is to supply +# the client with a new entries line containing `-' to indicate a removed +# file. In fact, the client probably could perform this operation without +# contacting the server, although using remove may cause the server to +# perform a few more checks. The client sends a subsequent ci request to +# actually record the removal in the repository. +sub req_remove +{ + my ( $cmd, $data ) = @_; + + argsplit("remove"); + + # Grab a handle to the SQLite db and do any necessary updates + my $updater = GITCVS::updater->new($state->{CVSROOT}, $state->{module}, $log); + $updater->update(); + + #$log->debug("add state : " . Dumper($state)); + + my $rmcount = 0; + + foreach my $filename ( @{$state->{args}} ) + { + $filename = filecleanup($filename); + + if ( defined ( $state->{entries}{$filename}{unchanged} ) or defined ( $state->{entries}{$filename}{modified_filename} ) ) + { + print "E cvs remove: file `$filename' still in working directory\n"; + next; + } + + my $meta = $updater->getmeta($filename); + my $wrev = revparse($filename); + + unless ( defined ( $wrev ) ) + { + print "E cvs remove: nothing known about `$filename'\n"; + next; + } + + if ( defined($wrev) and $wrev < 0 ) + { + print "E cvs remove: file `$filename' already scheduled for removal\n"; + next; + } + + unless ( $wrev == $meta->{revision} ) + { + # TODO : not sure if the format of this message is quite correct. + print "E cvs remove: Up to date check failed for `$filename'\n"; + next; + } + + + my ( $filepart, $dirpart ) = filenamesplit($filename, 1); + + print "E cvs remove: scheduling `$filename' for removal\n"; + + print "Checked-in $dirpart\n"; + print "$filename\n"; + my $kopts = kopts_from_path($filepart); + print "/$filepart/-1.$wrev//$kopts/\n"; + + $rmcount++; + } + + if ( $rmcount == 1 ) + { + print "E cvs remove: use `cvs commit' to remove this file permanently\n"; + } + elsif ( $rmcount > 1 ) + { + print "E cvs remove: use `cvs commit' to remove these files permanently\n"; + } + + print "ok\n"; +} + +# Modified filename \n +# Response expected: no. Additional data: mode, \n, file transmission. Send +# the server a copy of one locally modified file. filename is a file within +# the most recent directory sent with Directory; it must not contain `/'. +# If the user is operating on only some files in a directory, only those +# files need to be included. This can also be sent without Entry, if there +# is no entry for the file. +sub req_Modified +{ + my ( $cmd, $data ) = @_; + + my $mode = <STDIN>; + chomp $mode; + my $size = <STDIN>; + chomp $size; + + # Grab config information + my $blocksize = 8192; + my $bytesleft = $size; + my $tmp; + + # Get a filehandle/name to write it to + my ( $fh, $filename ) = tempfile( DIR => $TEMP_DIR ); + + # Loop over file data writing out to temporary file. + while ( $bytesleft ) + { + $blocksize = $bytesleft if ( $bytesleft < $blocksize ); + read STDIN, $tmp, $blocksize; + print $fh $tmp; + $bytesleft -= $blocksize; + } + + close $fh; + + # Ensure we have something sensible for the file mode + if ( $mode =~ /u=(\w+)/ ) + { + $mode = $1; + } else { + $mode = "rw"; + } + + # Save the file data in $state + $state->{entries}{$state->{directory}.$data}{modified_filename} = $filename; + $state->{entries}{$state->{directory}.$data}{modified_mode} = $mode; + $state->{entries}{$state->{directory}.$data}{modified_hash} = `git-hash-object $filename`; + $state->{entries}{$state->{directory}.$data}{modified_hash} =~ s/\s.*$//s; + + #$log->debug("req_Modified : file=$data mode=$mode size=$size"); +} + +# Unchanged filename \n +# Response expected: no. Tell the server that filename has not been +# modified in the checked out directory. The filename is a file within the +# most recent directory sent with Directory; it must not contain `/'. +sub req_Unchanged +{ + my ( $cmd, $data ) = @_; + + $state->{entries}{$state->{directory}.$data}{unchanged} = 1; + + #$log->debug("req_Unchanged : $data"); +} + +# Argument text \n +# Response expected: no. Save argument for use in a subsequent command. +# Arguments accumulate until an argument-using command is given, at which +# point they are forgotten. +# Argumentx text \n +# Response expected: no. Append \n followed by text to the current argument +# being saved. +sub req_Argument +{ + my ( $cmd, $data ) = @_; + + # Argumentx means: append to last Argument (with a newline in front) + + $log->debug("$cmd : $data"); + + if ( $cmd eq 'Argumentx') { + ${$state->{arguments}}[$#{$state->{arguments}}] .= "\n" . $data; + } else { + push @{$state->{arguments}}, $data; + } +} + +# expand-modules \n +# Response expected: yes. Expand the modules which are specified in the +# arguments. Returns the data in Module-expansion responses. Note that the +# server can assume that this is checkout or export, not rtag or rdiff; the +# latter do not access the working directory and thus have no need to +# expand modules on the client side. Expand may not be the best word for +# what this request does. It does not necessarily tell you all the files +# contained in a module, for example. Basically it is a way of telling you +# which working directories the server needs to know about in order to +# handle a checkout of the specified modules. For example, suppose that the +# server has a module defined by +# aliasmodule -a 1dir +# That is, one can check out aliasmodule and it will take 1dir in the +# repository and check it out to 1dir in the working directory. Now suppose +# the client already has this module checked out and is planning on using +# the co request to update it. Without using expand-modules, the client +# would have two bad choices: it could either send information about all +# working directories under the current directory, which could be +# unnecessarily slow, or it could be ignorant of the fact that aliasmodule +# stands for 1dir, and neglect to send information for 1dir, which would +# lead to incorrect operation. With expand-modules, the client would first +# ask for the module to be expanded: +sub req_expandmodules +{ + my ( $cmd, $data ) = @_; + + argsplit(); + + $log->debug("req_expandmodules : " . ( defined($data) ? $data : "[NULL]" ) ); + + unless ( ref $state->{arguments} eq "ARRAY" ) + { + print "ok\n"; + return; + } + + foreach my $module ( @{$state->{arguments}} ) + { + $log->debug("SEND : Module-expansion $module"); + print "Module-expansion $module\n"; + } + + print "ok\n"; + statecleanup(); +} + +# co \n +# Response expected: yes. Get files from the repository. This uses any +# previous Argument, Directory, Entry, or Modified requests, if they have +# been sent. Arguments to this command are module names; the client cannot +# know what directories they correspond to except by (1) just sending the +# co request, and then seeing what directory names the server sends back in +# its responses, and (2) the expand-modules request. +sub req_co +{ + my ( $cmd, $data ) = @_; + + argsplit("co"); + + my $module = $state->{args}[0]; + my $checkout_path = $module; + + # use the user specified directory if we're given it + $checkout_path = $state->{opt}{d} if ( exists ( $state->{opt}{d} ) ); + + $log->debug("req_co : " . ( defined($data) ? $data : "[NULL]" ) ); + + $log->info("Checking out module '$module' ($state->{CVSROOT}) to '$checkout_path'"); + + $ENV{GIT_DIR} = $state->{CVSROOT} . "/"; + + # Grab a handle to the SQLite db and do any necessary updates + my $updater = GITCVS::updater->new($state->{CVSROOT}, $module, $log); + $updater->update(); + + $checkout_path =~ s|/$||; # get rid of trailing slashes + + # Eclipse seems to need the Clear-sticky command + # to prepare the 'Entries' file for the new directory. + print "Clear-sticky $checkout_path/\n"; + print $state->{CVSROOT} . "/$module/\n"; + print "Clear-static-directory $checkout_path/\n"; + print $state->{CVSROOT} . "/$module/\n"; + print "Clear-sticky $checkout_path/\n"; # yes, twice + print $state->{CVSROOT} . "/$module/\n"; + print "Template $checkout_path/\n"; + print $state->{CVSROOT} . "/$module/\n"; + print "0\n"; + + # instruct the client that we're checking out to $checkout_path + print "E cvs checkout: Updating $checkout_path\n"; + + my %seendirs = (); + my $lastdir =''; + + # recursive + sub prepdir { + my ($dir, $repodir, $remotedir, $seendirs) = @_; + my $parent = dirname($dir); + $dir =~ s|/+$||; + $repodir =~ s|/+$||; + $remotedir =~ s|/+$||; + $parent =~ s|/+$||; + $log->debug("announcedir $dir, $repodir, $remotedir" ); + + if ($parent eq '.' || $parent eq './') { + $parent = ''; + } + # recurse to announce unseen parents first + if (length($parent) && !exists($seendirs->{$parent})) { + prepdir($parent, $repodir, $remotedir, $seendirs); + } + # Announce that we are going to modify at the parent level + if ($parent) { + print "E cvs checkout: Updating $remotedir/$parent\n"; + } else { + print "E cvs checkout: Updating $remotedir\n"; + } + print "Clear-sticky $remotedir/$parent/\n"; + print "$repodir/$parent/\n"; + + print "Clear-static-directory $remotedir/$dir/\n"; + print "$repodir/$dir/\n"; + print "Clear-sticky $remotedir/$parent/\n"; # yes, twice + print "$repodir/$parent/\n"; + print "Template $remotedir/$dir/\n"; + print "$repodir/$dir/\n"; + print "0\n"; + + $seendirs->{$dir} = 1; + } + + foreach my $git ( @{$updater->gethead} ) + { + # Don't want to check out deleted files + next if ( $git->{filehash} eq "deleted" ); + + ( $git->{name}, $git->{dir} ) = filenamesplit($git->{name}); + + if (length($git->{dir}) && $git->{dir} ne './' + && $git->{dir} ne $lastdir ) { + unless (exists($seendirs{$git->{dir}})) { + prepdir($git->{dir}, $state->{CVSROOT} . "/$module/", + $checkout_path, \%seendirs); + $lastdir = $git->{dir}; + $seendirs{$git->{dir}} = 1; + } + print "E cvs checkout: Updating /$checkout_path/$git->{dir}\n"; + } + + # modification time of this file + print "Mod-time $git->{modified}\n"; + + # print some information to the client + if ( defined ( $git->{dir} ) and $git->{dir} ne "./" ) + { + print "M U $checkout_path/$git->{dir}$git->{name}\n"; + } else { + print "M U $checkout_path/$git->{name}\n"; + } + + # instruct client we're sending a file to put in this path + print "Created $checkout_path/" . ( defined ( $git->{dir} ) and $git->{dir} ne "./" ? $git->{dir} . "/" : "" ) . "\n"; + + print $state->{CVSROOT} . "/$module/" . ( defined ( $git->{dir} ) and $git->{dir} ne "./" ? $git->{dir} . "/" : "" ) . "$git->{name}\n"; + + # this is an "entries" line + my $kopts = kopts_from_path($git->{name}); + print "/$git->{name}/1.$git->{revision}//$kopts/\n"; + # permissions + print "u=$git->{mode},g=$git->{mode},o=$git->{mode}\n"; + + # transmit file + transmitfile($git->{filehash}); + } + + print "ok\n"; + + statecleanup(); +} + +# update \n +# Response expected: yes. Actually do a cvs update command. This uses any +# previous Argument, Directory, Entry, or Modified requests, if they have +# been sent. The last Directory sent specifies the working directory at the +# time of the operation. The -I option is not used--files which the client +# can decide whether to ignore are not mentioned and the client sends the +# Questionable request for others. +sub req_update +{ + my ( $cmd, $data ) = @_; + + $log->debug("req_update : " . ( defined($data) ? $data : "[NULL]" )); + + argsplit("update"); + + # + # It may just be a client exploring the available heads/modules + # in that case, list them as top level directories and leave it + # at that. Eclipse uses this technique to offer you a list of + # projects (heads in this case) to checkout. + # + if ($state->{module} eq '') { + print "E cvs update: Updating .\n"; + opendir HEADS, $state->{CVSROOT} . '/refs/heads'; + while (my $head = readdir(HEADS)) { + if (-f $state->{CVSROOT} . '/refs/heads/' . $head) { + print "E cvs update: New directory `$head'\n"; + } + } + closedir HEADS; + print "ok\n"; + return 1; + } + + + # Grab a handle to the SQLite db and do any necessary updates + my $updater = GITCVS::updater->new($state->{CVSROOT}, $state->{module}, $log); + + $updater->update(); + + argsfromdir($updater); + + #$log->debug("update state : " . Dumper($state)); + + # foreach file specified on the command line ... + foreach my $filename ( @{$state->{args}} ) + { + $filename = filecleanup($filename); + + $log->debug("Processing file $filename"); + + # if we have a -C we should pretend we never saw modified stuff + if ( exists ( $state->{opt}{C} ) ) + { + delete $state->{entries}{$filename}{modified_hash}; + delete $state->{entries}{$filename}{modified_filename}; + $state->{entries}{$filename}{unchanged} = 1; + } + + my $meta; + if ( defined($state->{opt}{r}) and $state->{opt}{r} =~ /^1\.(\d+)/ ) + { + $meta = $updater->getmeta($filename, $1); + } else { + $meta = $updater->getmeta($filename); + } + + if ( ! defined $meta ) + { + $meta = { + name => $filename, + revision => 0, + filehash => 'added' + }; + } + + my $oldmeta = $meta; + + my $wrev = revparse($filename); + + # If the working copy is an old revision, lets get that version too for comparison. + if ( defined($wrev) and $wrev != $meta->{revision} ) + { + $oldmeta = $updater->getmeta($filename, $wrev); + } + + #$log->debug("Target revision is $meta->{revision}, current working revision is $wrev"); + + # Files are up to date if the working copy and repo copy have the same revision, + # and the working copy is unmodified _and_ the user hasn't specified -C + next if ( defined ( $wrev ) + and defined($meta->{revision}) + and $wrev == $meta->{revision} + and $state->{entries}{$filename}{unchanged} + and not exists ( $state->{opt}{C} ) ); + + # If the working copy and repo copy have the same revision, + # but the working copy is modified, tell the client it's modified + if ( defined ( $wrev ) + and defined($meta->{revision}) + and $wrev == $meta->{revision} + and defined($state->{entries}{$filename}{modified_hash}) + and not exists ( $state->{opt}{C} ) ) + { + $log->info("Tell the client the file is modified"); + print "MT text M \n"; + print "MT fname $filename\n"; + print "MT newline\n"; + next; + } + + if ( $meta->{filehash} eq "deleted" ) + { + my ( $filepart, $dirpart ) = filenamesplit($filename,1); + + $log->info("Removing '$filename' from working copy (no longer in the repo)"); + + print "E cvs update: `$filename' is no longer in the repository\n"; + # Don't want to actually _DO_ the update if -n specified + unless ( $state->{globaloptions}{-n} ) { + print "Removed $dirpart\n"; + print "$filepart\n"; + } + } + elsif ( not defined ( $state->{entries}{$filename}{modified_hash} ) + or $state->{entries}{$filename}{modified_hash} eq $oldmeta->{filehash} + or $meta->{filehash} eq 'added' ) + { + # normal update, just send the new revision (either U=Update, + # or A=Add, or R=Remove) + if ( defined($wrev) && $wrev < 0 ) + { + $log->info("Tell the client the file is scheduled for removal"); + print "MT text R \n"; + print "MT fname $filename\n"; + print "MT newline\n"; + next; + } + elsif ( (!defined($wrev) || $wrev == 0) && (!defined($meta->{revision}) || $meta->{revision} == 0) ) + { + $log->info("Tell the client the file is scheduled for addition"); + print "MT text A \n"; + print "MT fname $filename\n"; + print "MT newline\n"; + next; + + } + else { + $log->info("Updating '$filename' to ".$meta->{revision}); + print "MT +updated\n"; + print "MT text U \n"; + print "MT fname $filename\n"; + print "MT newline\n"; + print "MT -updated\n"; + } + + my ( $filepart, $dirpart ) = filenamesplit($filename,1); + + # Don't want to actually _DO_ the update if -n specified + unless ( $state->{globaloptions}{-n} ) + { + if ( defined ( $wrev ) ) + { + # instruct client we're sending a file to put in this path as a replacement + print "Update-existing $dirpart\n"; + $log->debug("Updating existing file 'Update-existing $dirpart'"); + } else { + # instruct client we're sending a file to put in this path as a new file + print "Clear-static-directory $dirpart\n"; + print $state->{CVSROOT} . "/$state->{module}/$dirpart\n"; + print "Clear-sticky $dirpart\n"; + print $state->{CVSROOT} . "/$state->{module}/$dirpart\n"; + + $log->debug("Creating new file 'Created $dirpart'"); + print "Created $dirpart\n"; + } + print $state->{CVSROOT} . "/$state->{module}/$filename\n"; + + # this is an "entries" line + my $kopts = kopts_from_path($filepart); + $log->debug("/$filepart/1.$meta->{revision}//$kopts/"); + print "/$filepart/1.$meta->{revision}//$kopts/\n"; + + # permissions + $log->debug("SEND : u=$meta->{mode},g=$meta->{mode},o=$meta->{mode}"); + print "u=$meta->{mode},g=$meta->{mode},o=$meta->{mode}\n"; + + # transmit file + transmitfile($meta->{filehash}); + } + } else { + $log->info("Updating '$filename'"); + my ( $filepart, $dirpart ) = filenamesplit($meta->{name},1); + + my $dir = tempdir( DIR => $TEMP_DIR, CLEANUP => 1 ) . "/"; + + chdir $dir; + my $file_local = $filepart . ".mine"; + system("ln","-s",$state->{entries}{$filename}{modified_filename}, $file_local); + my $file_old = $filepart . "." . $oldmeta->{revision}; + transmitfile($oldmeta->{filehash}, $file_old); + my $file_new = $filepart . "." . $meta->{revision}; + transmitfile($meta->{filehash}, $file_new); + + # we need to merge with the local changes ( M=successful merge, C=conflict merge ) + $log->info("Merging $file_local, $file_old, $file_new"); + print "M Merging differences between 1.$oldmeta->{revision} and 1.$meta->{revision} into $filename\n"; + + $log->debug("Temporary directory for merge is $dir"); + + my $return = system("git", "merge-file", $file_local, $file_old, $file_new); + $return >>= 8; + + if ( $return == 0 ) + { + $log->info("Merged successfully"); + print "M M $filename\n"; + $log->debug("Merged $dirpart"); + + # Don't want to actually _DO_ the update if -n specified + unless ( $state->{globaloptions}{-n} ) + { + print "Merged $dirpart\n"; + $log->debug($state->{CVSROOT} . "/$state->{module}/$filename"); + print $state->{CVSROOT} . "/$state->{module}/$filename\n"; + my $kopts = kopts_from_path($filepart); + $log->debug("/$filepart/1.$meta->{revision}//$kopts/"); + print "/$filepart/1.$meta->{revision}//$kopts/\n"; + } + } + elsif ( $return == 1 ) + { + $log->info("Merged with conflicts"); + print "E cvs update: conflicts found in $filename\n"; + print "M C $filename\n"; + + # Don't want to actually _DO_ the update if -n specified + unless ( $state->{globaloptions}{-n} ) + { + print "Merged $dirpart\n"; + print $state->{CVSROOT} . "/$state->{module}/$filename\n"; + my $kopts = kopts_from_path($filepart); + print "/$filepart/1.$meta->{revision}/+/$kopts/\n"; + } + } + else + { + $log->warn("Merge failed"); + next; + } + + # Don't want to actually _DO_ the update if -n specified + unless ( $state->{globaloptions}{-n} ) + { + # permissions + $log->debug("SEND : u=$meta->{mode},g=$meta->{mode},o=$meta->{mode}"); + print "u=$meta->{mode},g=$meta->{mode},o=$meta->{mode}\n"; + + # transmit file, format is single integer on a line by itself (file + # size) followed by the file contents + # TODO : we should copy files in blocks + my $data = `cat $file_local`; + $log->debug("File size : " . length($data)); + print length($data) . "\n"; + print $data; + } + + chdir "/"; + } + + } + + print "ok\n"; +} + +sub req_ci +{ + my ( $cmd, $data ) = @_; + + argsplit("ci"); + + #$log->debug("State : " . Dumper($state)); + + $log->info("req_ci : " . ( defined($data) ? $data : "[NULL]" )); + + if ( $state->{method} eq 'pserver') + { + print "error 1 pserver access cannot commit\n"; + exit; + } + + if ( -e $state->{CVSROOT} . "/index" ) + { + $log->warn("file 'index' already exists in the git repository"); + print "error 1 Index already exists in git repo\n"; + exit; + } + + # Grab a handle to the SQLite db and do any necessary updates + my $updater = GITCVS::updater->new($state->{CVSROOT}, $state->{module}, $log); + $updater->update(); + + my $tmpdir = tempdir ( DIR => $TEMP_DIR ); + my ( undef, $file_index ) = tempfile ( DIR => $TEMP_DIR, OPEN => 0 ); + $log->info("Lockless commit start, basing commit on '$tmpdir', index file is '$file_index'"); + + $ENV{GIT_DIR} = $state->{CVSROOT} . "/"; + $ENV{GIT_INDEX_FILE} = $file_index; + + # Remember where the head was at the beginning. + my $parenthash = `git show-ref -s refs/heads/$state->{module}`; + chomp $parenthash; + if ($parenthash !~ /^[0-9a-f]{40}$/) { + print "error 1 pserver cannot find the current HEAD of module"; + exit; + } + + chdir $tmpdir; + + # populate the temporary index based + system("git-read-tree", $parenthash); + unless ($? == 0) + { + die "Error running git-read-tree $state->{module} $file_index $!"; + } + $log->info("Created index '$file_index' with for head $state->{module} - exit status $?"); + + my @committedfiles = (); + my %oldmeta; + + # foreach file specified on the command line ... + foreach my $filename ( @{$state->{args}} ) + { + my $committedfile = $filename; + $filename = filecleanup($filename); + + next unless ( exists $state->{entries}{$filename}{modified_filename} or not $state->{entries}{$filename}{unchanged} ); + + my $meta = $updater->getmeta($filename); + $oldmeta{$filename} = $meta; + + my $wrev = revparse($filename); + + my ( $filepart, $dirpart ) = filenamesplit($filename); + + # do a checkout of the file if it part of this tree + if ($wrev) { + system('git-checkout-index', '-f', '-u', $filename); + unless ($? == 0) { + die "Error running git-checkout-index -f -u $filename : $!"; + } + } + + my $addflag = 0; + my $rmflag = 0; + $rmflag = 1 if ( defined($wrev) and $wrev < 0 ); + $addflag = 1 unless ( -e $filename ); + + # Do up to date checking + unless ( $addflag or $wrev == $meta->{revision} or ( $rmflag and -$wrev == $meta->{revision} ) ) + { + # fail everything if an up to date check fails + print "error 1 Up to date check failed for $filename\n"; + chdir "/"; + exit; + } + + push @committedfiles, $committedfile; + $log->info("Committing $filename"); + + system("mkdir","-p",$dirpart) unless ( -d $dirpart ); + + unless ( $rmflag ) + { + $log->debug("rename $state->{entries}{$filename}{modified_filename} $filename"); + rename $state->{entries}{$filename}{modified_filename},$filename; + + # Calculate modes to remove + my $invmode = ""; + foreach ( qw (r w x) ) { $invmode .= $_ unless ( $state->{entries}{$filename}{modified_mode} =~ /$_/ ); } + + $log->debug("chmod u+" . $state->{entries}{$filename}{modified_mode} . "-" . $invmode . " $filename"); + system("chmod","u+" . $state->{entries}{$filename}{modified_mode} . "-" . $invmode, $filename); + } + + if ( $rmflag ) + { + $log->info("Removing file '$filename'"); + unlink($filename); + system("git-update-index", "--remove", $filename); + } + elsif ( $addflag ) + { + $log->info("Adding file '$filename'"); + system("git-update-index", "--add", $filename); + } else { + $log->info("Updating file '$filename'"); + system("git-update-index", $filename); + } + } + + unless ( scalar(@committedfiles) > 0 ) + { + print "E No files to commit\n"; + print "ok\n"; + chdir "/"; + return; + } + + my $treehash = `git-write-tree`; + chomp $treehash; + + $log->debug("Treehash : $treehash, Parenthash : $parenthash"); + + # write our commit message out if we have one ... + my ( $msg_fh, $msg_filename ) = tempfile( DIR => $TEMP_DIR ); + print $msg_fh $state->{opt}{m};# if ( exists ( $state->{opt}{m} ) ); + print $msg_fh "\n\nvia git-CVS emulator\n"; + close $msg_fh; + + my $commithash = `git-commit-tree $treehash -p $parenthash < $msg_filename`; + chomp($commithash); + $log->info("Commit hash : $commithash"); + + unless ( $commithash =~ /[a-zA-Z0-9]{40}/ ) + { + $log->warn("Commit failed (Invalid commit hash)"); + print "error 1 Commit failed (unknown reason)\n"; + chdir "/"; + exit; + } + + # Check that this is allowed, just as we would with a receive-pack + my @cmd = ( $ENV{GIT_DIR}.'hooks/update', "refs/heads/$state->{module}", + $parenthash, $commithash ); + if( -x $cmd[0] ) { + unless( system( @cmd ) == 0 ) + { + $log->warn("Commit failed (update hook declined to update ref)"); + print "error 1 Commit failed (update hook declined)\n"; + chdir "/"; + exit; + } + } + + if (system(qw(git update-ref -m), "cvsserver ci", + "refs/heads/$state->{module}", $commithash, $parenthash)) { + $log->warn("update-ref for $state->{module} failed."); + print "error 1 Cannot commit -- update first\n"; + exit; + } + + $updater->update(); + + # foreach file specified on the command line ... + foreach my $filename ( @committedfiles ) + { + $filename = filecleanup($filename); + + my $meta = $updater->getmeta($filename); + unless (defined $meta->{revision}) { + $meta->{revision} = 1; + } + + my ( $filepart, $dirpart ) = filenamesplit($filename, 1); + + $log->debug("Checked-in $dirpart : $filename"); + + print "M $state->{CVSROOT}/$state->{module}/$filename,v <-- $dirpart$filepart\n"; + if ( defined $meta->{filehash} && $meta->{filehash} eq "deleted" ) + { + print "M new revision: delete; previous revision: 1.$oldmeta{$filename}{revision}\n"; + print "Remove-entry $dirpart\n"; + print "$filename\n"; + } else { + if ($meta->{revision} == 1) { + print "M initial revision: 1.1\n"; + } else { + print "M new revision: 1.$meta->{revision}; previous revision: 1.$oldmeta{$filename}{revision}\n"; + } + print "Checked-in $dirpart\n"; + print "$filename\n"; + my $kopts = kopts_from_path($filepart); + print "/$filepart/1.$meta->{revision}//$kopts/\n"; + } + } + + chdir "/"; + print "ok\n"; +} + +sub req_status +{ + my ( $cmd, $data ) = @_; + + argsplit("status"); + + $log->info("req_status : " . ( defined($data) ? $data : "[NULL]" )); + #$log->debug("status state : " . Dumper($state)); + + # Grab a handle to the SQLite db and do any necessary updates + my $updater = GITCVS::updater->new($state->{CVSROOT}, $state->{module}, $log); + $updater->update(); + + # if no files were specified, we need to work out what files we should be providing status on ... + argsfromdir($updater); + + # foreach file specified on the command line ... + foreach my $filename ( @{$state->{args}} ) + { + $filename = filecleanup($filename); + + my $meta = $updater->getmeta($filename); + my $oldmeta = $meta; + + my $wrev = revparse($filename); + + # If the working copy is an old revision, lets get that version too for comparison. + if ( defined($wrev) and $wrev != $meta->{revision} ) + { + $oldmeta = $updater->getmeta($filename, $wrev); + } + + # TODO : All possible statuses aren't yet implemented + my $status; + # Files are up to date if the working copy and repo copy have the same revision, and the working copy is unmodified + $status = "Up-to-date" if ( defined ( $wrev ) and defined($meta->{revision}) and $wrev == $meta->{revision} + and + ( ( $state->{entries}{$filename}{unchanged} and ( not defined ( $state->{entries}{$filename}{conflict} ) or $state->{entries}{$filename}{conflict} !~ /^\+=/ ) ) + or ( defined($state->{entries}{$filename}{modified_hash}) and $state->{entries}{$filename}{modified_hash} eq $meta->{filehash} ) ) + ); + + # Need checkout if the working copy has an older revision than the repo copy, and the working copy is unmodified + $status ||= "Needs Checkout" if ( defined ( $wrev ) and defined ( $meta->{revision} ) and $meta->{revision} > $wrev + and + ( $state->{entries}{$filename}{unchanged} + or ( defined($state->{entries}{$filename}{modified_hash}) and $state->{entries}{$filename}{modified_hash} eq $oldmeta->{filehash} ) ) + ); + + # Need checkout if it exists in the repo but doesn't have a working copy + $status ||= "Needs Checkout" if ( not defined ( $wrev ) and defined ( $meta->{revision} ) ); + + # Locally modified if working copy and repo copy have the same revision but there are local changes + $status ||= "Locally Modified" if ( defined ( $wrev ) and defined($meta->{revision}) and $wrev == $meta->{revision} and $state->{entries}{$filename}{modified_filename} ); + + # Needs Merge if working copy revision is less than repo copy and there are local changes + $status ||= "Needs Merge" if ( defined ( $wrev ) and defined ( $meta->{revision} ) and $meta->{revision} > $wrev and $state->{entries}{$filename}{modified_filename} ); + + $status ||= "Locally Added" if ( defined ( $state->{entries}{$filename}{revision} ) and not defined ( $meta->{revision} ) ); + $status ||= "Locally Removed" if ( defined ( $wrev ) and defined ( $meta->{revision} ) and -$wrev == $meta->{revision} ); + $status ||= "Unresolved Conflict" if ( defined ( $state->{entries}{$filename}{conflict} ) and $state->{entries}{$filename}{conflict} =~ /^\+=/ ); + $status ||= "File had conflicts on merge" if ( 0 ); + + $status ||= "Unknown"; + + print "M ===================================================================\n"; + print "M File: $filename\tStatus: $status\n"; + if ( defined($state->{entries}{$filename}{revision}) ) + { + print "M Working revision:\t" . $state->{entries}{$filename}{revision} . "\n"; + } else { + print "M Working revision:\tNo entry for $filename\n"; + } + if ( defined($meta->{revision}) ) + { + print "M Repository revision:\t1." . $meta->{revision} . "\t$state->{CVSROOT}/$state->{module}/$filename,v\n"; + print "M Sticky Tag:\t\t(none)\n"; + print "M Sticky Date:\t\t(none)\n"; + print "M Sticky Options:\t\t(none)\n"; + } else { + print "M Repository revision:\tNo revision control file\n"; + } + print "M\n"; + } + + print "ok\n"; +} + +sub req_diff +{ + my ( $cmd, $data ) = @_; + + argsplit("diff"); + + $log->debug("req_diff : " . ( defined($data) ? $data : "[NULL]" )); + #$log->debug("status state : " . Dumper($state)); + + my ($revision1, $revision2); + if ( defined ( $state->{opt}{r} ) and ref $state->{opt}{r} eq "ARRAY" ) + { + $revision1 = $state->{opt}{r}[0]; + $revision2 = $state->{opt}{r}[1]; + } else { + $revision1 = $state->{opt}{r}; + } + + $revision1 =~ s/^1\.// if ( defined ( $revision1 ) ); + $revision2 =~ s/^1\.// if ( defined ( $revision2 ) ); + + $log->debug("Diffing revisions " . ( defined($revision1) ? $revision1 : "[NULL]" ) . " and " . ( defined($revision2) ? $revision2 : "[NULL]" ) ); + + # Grab a handle to the SQLite db and do any necessary updates + my $updater = GITCVS::updater->new($state->{CVSROOT}, $state->{module}, $log); + $updater->update(); + + # if no files were specified, we need to work out what files we should be providing status on ... + argsfromdir($updater); + + # foreach file specified on the command line ... + foreach my $filename ( @{$state->{args}} ) + { + $filename = filecleanup($filename); + + my ( $fh, $file1, $file2, $meta1, $meta2, $filediff ); + + my $wrev = revparse($filename); + + # We need _something_ to diff against + next unless ( defined ( $wrev ) ); + + # if we have a -r switch, use it + if ( defined ( $revision1 ) ) + { + ( undef, $file1 ) = tempfile( DIR => $TEMP_DIR, OPEN => 0 ); + $meta1 = $updater->getmeta($filename, $revision1); + unless ( defined ( $meta1 ) and $meta1->{filehash} ne "deleted" ) + { + print "E File $filename at revision 1.$revision1 doesn't exist\n"; + next; + } + transmitfile($meta1->{filehash}, $file1); + } + # otherwise we just use the working copy revision + else + { + ( undef, $file1 ) = tempfile( DIR => $TEMP_DIR, OPEN => 0 ); + $meta1 = $updater->getmeta($filename, $wrev); + transmitfile($meta1->{filehash}, $file1); + } + + # if we have a second -r switch, use it too + if ( defined ( $revision2 ) ) + { + ( undef, $file2 ) = tempfile( DIR => $TEMP_DIR, OPEN => 0 ); + $meta2 = $updater->getmeta($filename, $revision2); + + unless ( defined ( $meta2 ) and $meta2->{filehash} ne "deleted" ) + { + print "E File $filename at revision 1.$revision2 doesn't exist\n"; + next; + } + + transmitfile($meta2->{filehash}, $file2); + } + # otherwise we just use the working copy + else + { + $file2 = $state->{entries}{$filename}{modified_filename}; + } + + # if we have been given -r, and we don't have a $file2 yet, lets get one + if ( defined ( $revision1 ) and not defined ( $file2 ) ) + { + ( undef, $file2 ) = tempfile( DIR => $TEMP_DIR, OPEN => 0 ); + $meta2 = $updater->getmeta($filename, $wrev); + transmitfile($meta2->{filehash}, $file2); + } + + # We need to have retrieved something useful + next unless ( defined ( $meta1 ) ); + + # Files to date if the working copy and repo copy have the same revision, and the working copy is unmodified + next if ( not defined ( $meta2 ) and $wrev == $meta1->{revision} + and + ( ( $state->{entries}{$filename}{unchanged} and ( not defined ( $state->{entries}{$filename}{conflict} ) or $state->{entries}{$filename}{conflict} !~ /^\+=/ ) ) + or ( defined($state->{entries}{$filename}{modified_hash}) and $state->{entries}{$filename}{modified_hash} eq $meta1->{filehash} ) ) + ); + + # Apparently we only show diffs for locally modified files + next unless ( defined($meta2) or defined ( $state->{entries}{$filename}{modified_filename} ) ); + + print "M Index: $filename\n"; + print "M ===================================================================\n"; + print "M RCS file: $state->{CVSROOT}/$state->{module}/$filename,v\n"; + print "M retrieving revision 1.$meta1->{revision}\n" if ( defined ( $meta1 ) ); + print "M retrieving revision 1.$meta2->{revision}\n" if ( defined ( $meta2 ) ); + print "M diff "; + foreach my $opt ( keys %{$state->{opt}} ) + { + if ( ref $state->{opt}{$opt} eq "ARRAY" ) + { + foreach my $value ( @{$state->{opt}{$opt}} ) + { + print "-$opt $value "; + } + } else { + print "-$opt "; + print "$state->{opt}{$opt} " if ( defined ( $state->{opt}{$opt} ) ); + } + } + print "$filename\n"; + + $log->info("Diffing $filename -r $meta1->{revision} -r " . ( $meta2->{revision} or "workingcopy" )); + + ( $fh, $filediff ) = tempfile ( DIR => $TEMP_DIR ); + + if ( exists $state->{opt}{u} ) + { + system("diff -u -L '$filename revision 1.$meta1->{revision}' -L '$filename " . ( defined($meta2->{revision}) ? "revision 1.$meta2->{revision}" : "working copy" ) . "' $file1 $file2 > $filediff"); + } else { + system("diff $file1 $file2 > $filediff"); + } + + while ( <$fh> ) + { + print "M $_"; + } + close $fh; + } + + print "ok\n"; +} + +sub req_log +{ + my ( $cmd, $data ) = @_; + + argsplit("log"); + + $log->debug("req_log : " . ( defined($data) ? $data : "[NULL]" )); + #$log->debug("log state : " . Dumper($state)); + + my ( $minrev, $maxrev ); + if ( defined ( $state->{opt}{r} ) and $state->{opt}{r} =~ /([\d.]+)?(::?)([\d.]+)?/ ) + { + my $control = $2; + $minrev = $1; + $maxrev = $3; + $minrev =~ s/^1\.// if ( defined ( $minrev ) ); + $maxrev =~ s/^1\.// if ( defined ( $maxrev ) ); + $minrev++ if ( defined($minrev) and $control eq "::" ); + } + + # Grab a handle to the SQLite db and do any necessary updates + my $updater = GITCVS::updater->new($state->{CVSROOT}, $state->{module}, $log); + $updater->update(); + + # if no files were specified, we need to work out what files we should be providing status on ... + argsfromdir($updater); + + # foreach file specified on the command line ... + foreach my $filename ( @{$state->{args}} ) + { + $filename = filecleanup($filename); + + my $headmeta = $updater->getmeta($filename); + + my $revisions = $updater->getlog($filename); + my $totalrevisions = scalar(@$revisions); + + if ( defined ( $minrev ) ) + { + $log->debug("Removing revisions less than $minrev"); + while ( scalar(@$revisions) > 0 and $revisions->[-1]{revision} < $minrev ) + { + pop @$revisions; + } + } + if ( defined ( $maxrev ) ) + { + $log->debug("Removing revisions greater than $maxrev"); + while ( scalar(@$revisions) > 0 and $revisions->[0]{revision} > $maxrev ) + { + shift @$revisions; + } + } + + next unless ( scalar(@$revisions) ); + + print "M \n"; + print "M RCS file: $state->{CVSROOT}/$state->{module}/$filename,v\n"; + print "M Working file: $filename\n"; + print "M head: 1.$headmeta->{revision}\n"; + print "M branch:\n"; + print "M locks: strict\n"; + print "M access list:\n"; + print "M symbolic names:\n"; + print "M keyword substitution: kv\n"; + print "M total revisions: $totalrevisions;\tselected revisions: " . scalar(@$revisions) . "\n"; + print "M description:\n"; + + foreach my $revision ( @$revisions ) + { + print "M ----------------------------\n"; + print "M revision 1.$revision->{revision}\n"; + # reformat the date for log output + $revision->{modified} = sprintf('%04d/%02d/%02d %s', $3, $DATE_LIST->{$2}, $1, $4 ) if ( $revision->{modified} =~ /(\d+)\s+(\w+)\s+(\d+)\s+(\S+)/ and defined($DATE_LIST->{$2}) ); + $revision->{author} =~ s/\s+.*//; + $revision->{author} =~ s/^(.{8}).*/$1/; + print "M date: $revision->{modified}; author: $revision->{author}; state: " . ( $revision->{filehash} eq "deleted" ? "dead" : "Exp" ) . "; lines: +2 -3\n"; + my $commitmessage = $updater->commitmessage($revision->{commithash}); + $commitmessage =~ s/^/M /mg; + print $commitmessage . "\n"; + } + print "M =============================================================================\n"; + } + + print "ok\n"; +} + +sub req_annotate +{ + my ( $cmd, $data ) = @_; + + argsplit("annotate"); + + $log->info("req_annotate : " . ( defined($data) ? $data : "[NULL]" )); + #$log->debug("status state : " . Dumper($state)); + + # Grab a handle to the SQLite db and do any necessary updates + my $updater = GITCVS::updater->new($state->{CVSROOT}, $state->{module}, $log); + $updater->update(); + + # if no files were specified, we need to work out what files we should be providing annotate on ... + argsfromdir($updater); + + # we'll need a temporary checkout dir + my $tmpdir = tempdir ( DIR => $TEMP_DIR ); + my ( undef, $file_index ) = tempfile ( DIR => $TEMP_DIR, OPEN => 0 ); + $log->info("Temp checkoutdir creation successful, basing annotate session work on '$tmpdir', index file is '$file_index'"); + + $ENV{GIT_DIR} = $state->{CVSROOT} . "/"; + $ENV{GIT_INDEX_FILE} = $file_index; + + chdir $tmpdir; + + # foreach file specified on the command line ... + foreach my $filename ( @{$state->{args}} ) + { + $filename = filecleanup($filename); + + my $meta = $updater->getmeta($filename); + + next unless ( $meta->{revision} ); + + # get all the commits that this file was in + # in dense format -- aka skip dead revisions + my $revisions = $updater->gethistorydense($filename); + my $lastseenin = $revisions->[0][2]; + + # populate the temporary index based on the latest commit were we saw + # the file -- but do it cheaply without checking out any files + # TODO: if we got a revision from the client, use that instead + # to look up the commithash in sqlite (still good to default to + # the current head as we do now) + system("git-read-tree", $lastseenin); + unless ($? == 0) + { + die "Error running git-read-tree $lastseenin $file_index $!"; + } + $log->info("Created index '$file_index' with commit $lastseenin - exit status $?"); + + # do a checkout of the file + system('git-checkout-index', '-f', '-u', $filename); + unless ($? == 0) { + die "Error running git-checkout-index -f -u $filename : $!"; + } + + $log->info("Annotate $filename"); + + # Prepare a file with the commits from the linearized + # history that annotate should know about. This prevents + # git-jsannotate telling us about commits we are hiding + # from the client. + + open(ANNOTATEHINTS, ">$tmpdir/.annotate_hints") or die "Error opening > $tmpdir/.annotate_hints $!"; + for (my $i=0; $i < @$revisions; $i++) + { + print ANNOTATEHINTS $revisions->[$i][2]; + if ($i+1 < @$revisions) { # have we got a parent? + print ANNOTATEHINTS ' ' . $revisions->[$i+1][2]; + } + print ANNOTATEHINTS "\n"; + } + + print ANNOTATEHINTS "\n"; + close ANNOTATEHINTS; + + my $annotatecmd = 'git-annotate'; + open(ANNOTATE, "-|", $annotatecmd, '-l', '-S', "$tmpdir/.annotate_hints", $filename) + or die "Error invoking $annotatecmd -l -S $tmpdir/.annotate_hints $filename : $!"; + my $metadata = {}; + print "E Annotations for $filename\n"; + print "E ***************\n"; + while ( <ANNOTATE> ) + { + if (m/^([a-zA-Z0-9]{40})\t\([^\)]*\)(.*)$/i) + { + my $commithash = $1; + my $data = $2; + unless ( defined ( $metadata->{$commithash} ) ) + { + $metadata->{$commithash} = $updater->getmeta($filename, $commithash); + $metadata->{$commithash}{author} =~ s/\s+.*//; + $metadata->{$commithash}{author} =~ s/^(.{8}).*/$1/; + $metadata->{$commithash}{modified} = sprintf("%02d-%s-%02d", $1, $2, $3) if ( $metadata->{$commithash}{modified} =~ /^(\d+)\s(\w+)\s\d\d(\d\d)/ ); + } + printf("M 1.%-5d (%-8s %10s): %s\n", + $metadata->{$commithash}{revision}, + $metadata->{$commithash}{author}, + $metadata->{$commithash}{modified}, + $data + ); + } else { + $log->warn("Error in annotate output! LINE: $_"); + print "E Annotate error \n"; + next; + } + } + close ANNOTATE; + } + + # done; get out of the tempdir + chdir "/"; + + print "ok\n"; + +} + +# This method takes the state->{arguments} array and produces two new arrays. +# The first is $state->{args} which is everything before the '--' argument, and +# the second is $state->{files} which is everything after it. +sub argsplit +{ + return unless( defined($state->{arguments}) and ref $state->{arguments} eq "ARRAY" ); + + my $type = shift; + + $state->{args} = []; + $state->{files} = []; + $state->{opt} = {}; + + if ( defined($type) ) + { + my $opt = {}; + $opt = { A => 0, N => 0, P => 0, R => 0, c => 0, f => 0, l => 0, n => 0, p => 0, s => 0, r => 1, D => 1, d => 1, k => 1, j => 1, } if ( $type eq "co" ); + $opt = { v => 0, l => 0, R => 0 } if ( $type eq "status" ); + $opt = { A => 0, P => 0, C => 0, d => 0, f => 0, l => 0, R => 0, p => 0, k => 1, r => 1, D => 1, j => 1, I => 1, W => 1 } if ( $type eq "update" ); + $opt = { l => 0, R => 0, k => 1, D => 1, D => 1, r => 2 } if ( $type eq "diff" ); + $opt = { c => 0, R => 0, l => 0, f => 0, F => 1, m => 1, r => 1 } if ( $type eq "ci" ); + $opt = { k => 1, m => 1 } if ( $type eq "add" ); + $opt = { f => 0, l => 0, R => 0 } if ( $type eq "remove" ); + $opt = { l => 0, b => 0, h => 0, R => 0, t => 0, N => 0, S => 0, r => 1, d => 1, s => 1, w => 1 } if ( $type eq "log" ); + + + while ( scalar ( @{$state->{arguments}} ) > 0 ) + { + my $arg = shift @{$state->{arguments}}; + + next if ( $arg eq "--" ); + next unless ( $arg =~ /\S/ ); + + # if the argument looks like a switch + if ( $arg =~ /^-(\w)(.*)/ ) + { + # if it's a switch that takes an argument + if ( $opt->{$1} ) + { + # If this switch has already been provided + if ( $opt->{$1} > 1 and exists ( $state->{opt}{$1} ) ) + { + $state->{opt}{$1} = [ $state->{opt}{$1} ]; + if ( length($2) > 0 ) + { + push @{$state->{opt}{$1}},$2; + } else { + push @{$state->{opt}{$1}}, shift @{$state->{arguments}}; + } + } else { + # if there's extra data in the arg, use that as the argument for the switch + if ( length($2) > 0 ) + { + $state->{opt}{$1} = $2; + } else { + $state->{opt}{$1} = shift @{$state->{arguments}}; + } + } + } else { + $state->{opt}{$1} = undef; + } + } + else + { + push @{$state->{args}}, $arg; + } + } + } + else + { + my $mode = 0; + + foreach my $value ( @{$state->{arguments}} ) + { + if ( $value eq "--" ) + { + $mode++; + next; + } + push @{$state->{args}}, $value if ( $mode == 0 ); + push @{$state->{files}}, $value if ( $mode == 1 ); + } + } +} + +# This method uses $state->{directory} to populate $state->{args} with a list of filenames +sub argsfromdir +{ + my $updater = shift; + + $state->{args} = [] if ( scalar(@{$state->{args}}) == 1 and $state->{args}[0] eq "." ); + + return if ( scalar ( @{$state->{args}} ) > 1 ); + + my @gethead = @{$updater->gethead}; + + # push added files + foreach my $file (keys %{$state->{entries}}) { + if ( exists $state->{entries}{$file}{revision} && + $state->{entries}{$file}{revision} == 0 ) + { + push @gethead, { name => $file, filehash => 'added' }; + } + } + + if ( scalar(@{$state->{args}}) == 1 ) + { + my $arg = $state->{args}[0]; + $arg .= $state->{prependdir} if ( defined ( $state->{prependdir} ) ); + + $log->info("Only one arg specified, checking for directory expansion on '$arg'"); + + foreach my $file ( @gethead ) + { + next if ( $file->{filehash} eq "deleted" and not defined ( $state->{entries}{$file->{name}} ) ); + next unless ( $file->{name} =~ /^$arg\// or $file->{name} eq $arg ); + push @{$state->{args}}, $file->{name}; + } + + shift @{$state->{args}} if ( scalar(@{$state->{args}}) > 1 ); + } else { + $log->info("Only one arg specified, populating file list automatically"); + + $state->{args} = []; + + foreach my $file ( @gethead ) + { + next if ( $file->{filehash} eq "deleted" and not defined ( $state->{entries}{$file->{name}} ) ); + next unless ( $file->{name} =~ s/^$state->{prependdir}// ); + push @{$state->{args}}, $file->{name}; + } + } +} + +# This method cleans up the $state variable after a command that uses arguments has run +sub statecleanup +{ + $state->{files} = []; + $state->{args} = []; + $state->{arguments} = []; + $state->{entries} = {}; +} + +sub revparse +{ + my $filename = shift; + + return undef unless ( defined ( $state->{entries}{$filename}{revision} ) ); + + return $1 if ( $state->{entries}{$filename}{revision} =~ /^1\.(\d+)/ ); + return -$1 if ( $state->{entries}{$filename}{revision} =~ /^-1\.(\d+)/ ); + + return undef; +} + +# This method takes a file hash and does a CVS "file transfer" which transmits the +# size of the file, and then the file contents. +# If a second argument $targetfile is given, the file is instead written out to +# a file by the name of $targetfile +sub transmitfile +{ + my $filehash = shift; + my $targetfile = shift; + + if ( defined ( $filehash ) and $filehash eq "deleted" ) + { + $log->warn("filehash is 'deleted'"); + return; + } + + die "Need filehash" unless ( defined ( $filehash ) and $filehash =~ /^[a-zA-Z0-9]{40}$/ ); + + my $type = `git-cat-file -t $filehash`; + chomp $type; + + die ( "Invalid type '$type' (expected 'blob')" ) unless ( defined ( $type ) and $type eq "blob" ); + + my $size = `git-cat-file -s $filehash`; + chomp $size; + + $log->debug("transmitfile($filehash) size=$size, type=$type"); + + if ( open my $fh, '-|', "git-cat-file", "blob", $filehash ) + { + if ( defined ( $targetfile ) ) + { + open NEWFILE, ">", $targetfile or die("Couldn't open '$targetfile' for writing : $!"); + print NEWFILE $_ while ( <$fh> ); + close NEWFILE; + } else { + print "$size\n"; + print while ( <$fh> ); + } + close $fh or die ("Couldn't close filehandle for transmitfile()"); + } else { + die("Couldn't execute git-cat-file"); + } +} + +# This method takes a file name, and returns ( $dirpart, $filepart ) which +# refers to the directory portion and the file portion of the filename +# respectively +sub filenamesplit +{ + my $filename = shift; + my $fixforlocaldir = shift; + + my ( $filepart, $dirpart ) = ( $filename, "." ); + ( $filepart, $dirpart ) = ( $2, $1 ) if ( $filename =~ /(.*)\/(.*)/ ); + $dirpart .= "/"; + + if ( $fixforlocaldir ) + { + $dirpart =~ s/^$state->{prependdir}//; + } + + return ( $filepart, $dirpart ); +} + +sub filecleanup +{ + my $filename = shift; + + return undef unless(defined($filename)); + if ( $filename =~ /^\// ) + { + print "E absolute filenames '$filename' not supported by server\n"; + return undef; + } + + $filename =~ s/^\.\///g; + $filename = $state->{prependdir} . $filename; + return $filename; +} + +# Given a path, this function returns a string containing the kopts +# that should go into that path's Entries line. For example, a binary +# file should get -kb. +sub kopts_from_path +{ + my ($path) = @_; + + # Once it exists, the git attributes system should be used to look up + # what attributes apply to this path. + + # Until then, take the setting from the config file + unless ( defined ( $cfg->{gitcvs}{allbinary} ) and $cfg->{gitcvs}{allbinary} =~ /^\s*(1|true|yes)\s*$/i ) + { + # Return "" to give no special treatment to any path + return ""; + } else { + # Alternatively, to have all files treated as if they are binary (which + # is more like git itself), always return the "-kb" option + return "-kb"; + } +} + +package GITCVS::log; + +#### +#### Copyright The Open University UK - 2006. +#### +#### Authors: Martyn Smith <martyn@catalyst.net.nz> +#### Martin Langhoff <martin@catalyst.net.nz> +#### +#### + +use strict; +use warnings; + +=head1 NAME + +GITCVS::log + +=head1 DESCRIPTION + +This module provides very crude logging with a similar interface to +Log::Log4perl + +=head1 METHODS + +=cut + +=head2 new + +Creates a new log object, optionally you can specify a filename here to +indicate the file to log to. If no log file is specified, you can specify one +later with method setfile, or indicate you no longer want logging with method +nofile. + +Until one of these methods is called, all log calls will buffer messages ready +to write out. + +=cut +sub new +{ + my $class = shift; + my $filename = shift; + + my $self = {}; + + bless $self, $class; + + if ( defined ( $filename ) ) + { + open $self->{fh}, ">>", $filename or die("Couldn't open '$filename' for writing : $!"); + } + + return $self; +} + +=head2 setfile + +This methods takes a filename, and attempts to open that file as the log file. +If successful, all buffered data is written out to the file, and any further +logging is written directly to the file. + +=cut +sub setfile +{ + my $self = shift; + my $filename = shift; + + if ( defined ( $filename ) ) + { + open $self->{fh}, ">>", $filename or die("Couldn't open '$filename' for writing : $!"); + } + + return unless ( defined ( $self->{buffer} ) and ref $self->{buffer} eq "ARRAY" ); + + while ( my $line = shift @{$self->{buffer}} ) + { + print {$self->{fh}} $line; + } +} + +=head2 nofile + +This method indicates no logging is going to be used. It flushes any entries in +the internal buffer, and sets a flag to ensure no further data is put there. + +=cut +sub nofile +{ + my $self = shift; + + $self->{nolog} = 1; + + return unless ( defined ( $self->{buffer} ) and ref $self->{buffer} eq "ARRAY" ); + + $self->{buffer} = []; +} + +=head2 _logopen + +Internal method. Returns true if the log file is open, false otherwise. + +=cut +sub _logopen +{ + my $self = shift; + + return 1 if ( defined ( $self->{fh} ) and ref $self->{fh} eq "GLOB" ); + return 0; +} + +=head2 debug info warn fatal + +These four methods are wrappers to _log. They provide the actual interface for +logging data. + +=cut +sub debug { my $self = shift; $self->_log("debug", @_); } +sub info { my $self = shift; $self->_log("info" , @_); } +sub warn { my $self = shift; $self->_log("warn" , @_); } +sub fatal { my $self = shift; $self->_log("fatal", @_); } + +=head2 _log + +This is an internal method called by the logging functions. It generates a +timestamp and pushes the logged line either to file, or internal buffer. + +=cut +sub _log +{ + my $self = shift; + my $level = shift; + + return if ( $self->{nolog} ); + + my @time = localtime; + my $timestring = sprintf("%4d-%02d-%02d %02d:%02d:%02d : %-5s", + $time[5] + 1900, + $time[4] + 1, + $time[3], + $time[2], + $time[1], + $time[0], + uc $level, + ); + + if ( $self->_logopen ) + { + print {$self->{fh}} $timestring . " - " . join(" ",@_) . "\n"; + } else { + push @{$self->{buffer}}, $timestring . " - " . join(" ",@_) . "\n"; + } +} + +=head2 DESTROY + +This method simply closes the file handle if one is open + +=cut +sub DESTROY +{ + my $self = shift; + + if ( $self->_logopen ) + { + close $self->{fh}; + } +} + +package GITCVS::updater; + +#### +#### Copyright The Open University UK - 2006. +#### +#### Authors: Martyn Smith <martyn@catalyst.net.nz> +#### Martin Langhoff <martin@catalyst.net.nz> +#### +#### + +use strict; +use warnings; +use DBI; + +=head1 METHODS + +=cut + +=head2 new + +=cut +sub new +{ + my $class = shift; + my $config = shift; + my $module = shift; + my $log = shift; + + die "Need to specify a git repository" unless ( defined($config) and -d $config ); + die "Need to specify a module" unless ( defined($module) ); + + $class = ref($class) || $class; + + my $self = {}; + + bless $self, $class; + + $self->{module} = $module; + $self->{git_path} = $config . "/"; + + $self->{log} = $log; + + die "Git repo '$self->{git_path}' doesn't exist" unless ( -d $self->{git_path} ); + + $self->{dbdriver} = $cfg->{gitcvs}{$state->{method}}{dbdriver} || + $cfg->{gitcvs}{dbdriver} || "SQLite"; + $self->{dbname} = $cfg->{gitcvs}{$state->{method}}{dbname} || + $cfg->{gitcvs}{dbname} || "%Ggitcvs.%m.sqlite"; + $self->{dbuser} = $cfg->{gitcvs}{$state->{method}}{dbuser} || + $cfg->{gitcvs}{dbuser} || ""; + $self->{dbpass} = $cfg->{gitcvs}{$state->{method}}{dbpass} || + $cfg->{gitcvs}{dbpass} || ""; + my %mapping = ( m => $module, + a => $state->{method}, + u => getlogin || getpwuid($<) || $<, + G => $self->{git_path}, + g => mangle_dirname($self->{git_path}), + ); + $self->{dbname} =~ s/%([mauGg])/$mapping{$1}/eg; + $self->{dbuser} =~ s/%([mauGg])/$mapping{$1}/eg; + + die "Invalid char ':' in dbdriver" if $self->{dbdriver} =~ /:/; + die "Invalid char ';' in dbname" if $self->{dbname} =~ /;/; + $self->{dbh} = DBI->connect("dbi:$self->{dbdriver}:dbname=$self->{dbname}", + $self->{dbuser}, + $self->{dbpass}); + die "Error connecting to database\n" unless defined $self->{dbh}; + + $self->{tables} = {}; + foreach my $table ( keys %{$self->{dbh}->table_info(undef,undef,undef,'TABLE')->fetchall_hashref('TABLE_NAME')} ) + { + $self->{tables}{$table} = 1; + } + + # Construct the revision table if required + unless ( $self->{tables}{revision} ) + { + $self->{dbh}->do(" + CREATE TABLE revision ( + name TEXT NOT NULL, + revision INTEGER NOT NULL, + filehash TEXT NOT NULL, + commithash TEXT NOT NULL, + author TEXT NOT NULL, + modified TEXT NOT NULL, + mode TEXT NOT NULL + ) + "); + $self->{dbh}->do(" + CREATE INDEX revision_ix1 + ON revision (name,revision) + "); + $self->{dbh}->do(" + CREATE INDEX revision_ix2 + ON revision (name,commithash) + "); + } + + # Construct the head table if required + unless ( $self->{tables}{head} ) + { + $self->{dbh}->do(" + CREATE TABLE head ( + name TEXT NOT NULL, + revision INTEGER NOT NULL, + filehash TEXT NOT NULL, + commithash TEXT NOT NULL, + author TEXT NOT NULL, + modified TEXT NOT NULL, + mode TEXT NOT NULL + ) + "); + $self->{dbh}->do(" + CREATE INDEX head_ix1 + ON head (name) + "); + } + + # Construct the properties table if required + unless ( $self->{tables}{properties} ) + { + $self->{dbh}->do(" + CREATE TABLE properties ( + key TEXT NOT NULL PRIMARY KEY, + value TEXT + ) + "); + } + + # Construct the commitmsgs table if required + unless ( $self->{tables}{commitmsgs} ) + { + $self->{dbh}->do(" + CREATE TABLE commitmsgs ( + key TEXT NOT NULL PRIMARY KEY, + value TEXT + ) + "); + } + + return $self; +} + +=head2 update + +=cut +sub update +{ + my $self = shift; + + # first lets get the commit list + $ENV{GIT_DIR} = $self->{git_path}; + + my $commitsha1 = `git rev-parse $self->{module}`; + chomp $commitsha1; + + my $commitinfo = `git cat-file commit $self->{module} 2>&1`; + unless ( $commitinfo =~ /tree\s+[a-zA-Z0-9]{40}/ ) + { + die("Invalid module '$self->{module}'"); + } + + + my $git_log; + my $lastcommit = $self->_get_prop("last_commit"); + + if (defined $lastcommit && $lastcommit eq $commitsha1) { # up-to-date + return 1; + } + + # Start exclusive lock here... + $self->{dbh}->begin_work() or die "Cannot lock database for BEGIN"; + + # TODO: log processing is memory bound + # if we can parse into a 2nd file that is in reverse order + # we can probably do something really efficient + my @git_log_params = ('--pretty', '--parents', '--topo-order'); + + if (defined $lastcommit) { + push @git_log_params, "$lastcommit..$self->{module}"; + } else { + push @git_log_params, $self->{module}; + } + # git-rev-list is the backend / plumbing version of git-log + open(GITLOG, '-|', 'git-rev-list', @git_log_params) or die "Cannot call git-rev-list: $!"; + + my @commits; + + my %commit = (); + + while ( <GITLOG> ) + { + chomp; + if (m/^commit\s+(.*)$/) { + # on ^commit lines put the just seen commit in the stack + # and prime things for the next one + if (keys %commit) { + my %copy = %commit; + unshift @commits, \%copy; + %commit = (); + } + my @parents = split(m/\s+/, $1); + $commit{hash} = shift @parents; + $commit{parents} = \@parents; + } elsif (m/^(\w+?):\s+(.*)$/ && !exists($commit{message})) { + # on rfc822-like lines seen before we see any message, + # lowercase the entry and put it in the hash as key-value + $commit{lc($1)} = $2; + } else { + # message lines - skip initial empty line + # and trim whitespace + if (!exists($commit{message}) && m/^\s*$/) { + # define it to mark the end of headers + $commit{message} = ''; + next; + } + s/^\s+//; s/\s+$//; # trim ws + $commit{message} .= $_ . "\n"; + } + } + close GITLOG; + + unshift @commits, \%commit if ( keys %commit ); + + # Now all the commits are in the @commits bucket + # ordered by time DESC. for each commit that needs processing, + # determine whether it's following the last head we've seen or if + # it's on its own branch, grab a file list, and add whatever's changed + # NOTE: $lastcommit refers to the last commit from previous run + # $lastpicked is the last commit we picked in this run + my $lastpicked; + my $head = {}; + if (defined $lastcommit) { + $lastpicked = $lastcommit; + } + + my $committotal = scalar(@commits); + my $commitcount = 0; + + # Load the head table into $head (for cached lookups during the update process) + foreach my $file ( @{$self->gethead()} ) + { + $head->{$file->{name}} = $file; + } + + foreach my $commit ( @commits ) + { + $self->{log}->debug("GITCVS::updater - Processing commit $commit->{hash} (" . (++$commitcount) . " of $committotal)"); + if (defined $lastpicked) + { + if (!in_array($lastpicked, @{$commit->{parents}})) + { + # skip, we'll see this delta + # as part of a merge later + # warn "skipping off-track $commit->{hash}\n"; + next; + } elsif (@{$commit->{parents}} > 1) { + # it is a merge commit, for each parent that is + # not $lastpicked, see if we can get a log + # from the merge-base to that parent to put it + # in the message as a merge summary. + my @parents = @{$commit->{parents}}; + foreach my $parent (@parents) { + # git-merge-base can potentially (but rarely) throw + # several candidate merge bases. let's assume + # that the first one is the best one. + if ($parent eq $lastpicked) { + next; + } + open my $p, 'git-merge-base '. $lastpicked . ' ' + . $parent . '|'; + my @output = (<$p>); + close $p; + my $base = join('', @output); + chomp $base; + if ($base) { + my @merged; + # print "want to log between $base $parent \n"; + open(GITLOG, '-|', 'git-log', "$base..$parent") + or die "Cannot call git-log: $!"; + my $mergedhash; + while (<GITLOG>) { + chomp; + if (!defined $mergedhash) { + if (m/^commit\s+(.+)$/) { + $mergedhash = $1; + } else { + next; + } + } else { + # grab the first line that looks non-rfc822 + # aka has content after leading space + if (m/^\s+(\S.*)$/) { + my $title = $1; + $title = substr($title,0,100); # truncate + unshift @merged, "$mergedhash $title"; + undef $mergedhash; + } + } + } + close GITLOG; + if (@merged) { + $commit->{mergemsg} = $commit->{message}; + $commit->{mergemsg} .= "\nSummary of merged commits:\n\n"; + foreach my $summary (@merged) { + $commit->{mergemsg} .= "\t$summary\n"; + } + $commit->{mergemsg} .= "\n\n"; + # print "Message for $commit->{hash} \n$commit->{mergemsg}"; + } + } + } + } + } + + # convert the date to CVS-happy format + $commit->{date} = "$2 $1 $4 $3 $5" if ( $commit->{date} =~ /^\w+\s+(\w+)\s+(\d+)\s+(\d+:\d+:\d+)\s+(\d+)\s+([+-]\d+)$/ ); + + if ( defined ( $lastpicked ) ) + { + my $filepipe = open(FILELIST, '-|', 'git-diff-tree', '-z', '-r', $lastpicked, $commit->{hash}) or die("Cannot call git-diff-tree : $!"); + local ($/) = "\0"; + while ( <FILELIST> ) + { + chomp; + unless ( /^:\d{6}\s+\d{3}(\d)\d{2}\s+[a-zA-Z0-9]{40}\s+([a-zA-Z0-9]{40})\s+(\w)$/o ) + { + die("Couldn't process git-diff-tree line : $_"); + } + my ($mode, $hash, $change) = ($1, $2, $3); + my $name = <FILELIST>; + chomp($name); + + # $log->debug("File mode=$mode, hash=$hash, change=$change, name=$name"); + + my $git_perms = ""; + $git_perms .= "r" if ( $mode & 4 ); + $git_perms .= "w" if ( $mode & 2 ); + $git_perms .= "x" if ( $mode & 1 ); + $git_perms = "rw" if ( $git_perms eq "" ); + + if ( $change eq "D" ) + { + #$log->debug("DELETE $name"); + $head->{$name} = { + name => $name, + revision => $head->{$name}{revision} + 1, + filehash => "deleted", + commithash => $commit->{hash}, + modified => $commit->{date}, + author => $commit->{author}, + mode => $git_perms, + }; + $self->insert_rev($name, $head->{$name}{revision}, $hash, $commit->{hash}, $commit->{date}, $commit->{author}, $git_perms); + } + elsif ( $change eq "M" ) + { + #$log->debug("MODIFIED $name"); + $head->{$name} = { + name => $name, + revision => $head->{$name}{revision} + 1, + filehash => $hash, + commithash => $commit->{hash}, + modified => $commit->{date}, + author => $commit->{author}, + mode => $git_perms, + }; + $self->insert_rev($name, $head->{$name}{revision}, $hash, $commit->{hash}, $commit->{date}, $commit->{author}, $git_perms); + } + elsif ( $change eq "A" ) + { + #$log->debug("ADDED $name"); + $head->{$name} = { + name => $name, + revision => $head->{$name}{revision} ? $head->{$name}{revision}+1 : 1, + filehash => $hash, + commithash => $commit->{hash}, + modified => $commit->{date}, + author => $commit->{author}, + mode => $git_perms, + }; + $self->insert_rev($name, $head->{$name}{revision}, $hash, $commit->{hash}, $commit->{date}, $commit->{author}, $git_perms); + } + else + { + $log->warn("UNKNOWN FILE CHANGE mode=$mode, hash=$hash, change=$change, name=$name"); + die; + } + } + close FILELIST; + } else { + # this is used to detect files removed from the repo + my $seen_files = {}; + + my $filepipe = open(FILELIST, '-|', 'git-ls-tree', '-z', '-r', $commit->{hash}) or die("Cannot call git-ls-tree : $!"); + local $/ = "\0"; + while ( <FILELIST> ) + { + chomp; + unless ( /^(\d+)\s+(\w+)\s+([a-zA-Z0-9]+)\t(.*)$/o ) + { + die("Couldn't process git-ls-tree line : $_"); + } + + my ( $git_perms, $git_type, $git_hash, $git_filename ) = ( $1, $2, $3, $4 ); + + $seen_files->{$git_filename} = 1; + + my ( $oldhash, $oldrevision, $oldmode ) = ( + $head->{$git_filename}{filehash}, + $head->{$git_filename}{revision}, + $head->{$git_filename}{mode} + ); + + if ( $git_perms =~ /^\d\d\d(\d)\d\d/o ) + { + $git_perms = ""; + $git_perms .= "r" if ( $1 & 4 ); + $git_perms .= "w" if ( $1 & 2 ); + $git_perms .= "x" if ( $1 & 1 ); + } else { + $git_perms = "rw"; + } + + # unless the file exists with the same hash, we need to update it ... + unless ( defined($oldhash) and $oldhash eq $git_hash and defined($oldmode) and $oldmode eq $git_perms ) + { + my $newrevision = ( $oldrevision or 0 ) + 1; + + $head->{$git_filename} = { + name => $git_filename, + revision => $newrevision, + filehash => $git_hash, + commithash => $commit->{hash}, + modified => $commit->{date}, + author => $commit->{author}, + mode => $git_perms, + }; + + + $self->insert_rev($git_filename, $newrevision, $git_hash, $commit->{hash}, $commit->{date}, $commit->{author}, $git_perms); + } + } + close FILELIST; + + # Detect deleted files + foreach my $file ( keys %$head ) + { + unless ( exists $seen_files->{$file} or $head->{$file}{filehash} eq "deleted" ) + { + $head->{$file}{revision}++; + $head->{$file}{filehash} = "deleted"; + $head->{$file}{commithash} = $commit->{hash}; + $head->{$file}{modified} = $commit->{date}; + $head->{$file}{author} = $commit->{author}; + + $self->insert_rev($file, $head->{$file}{revision}, $head->{$file}{filehash}, $commit->{hash}, $commit->{date}, $commit->{author}, $head->{$file}{mode}); + } + } + # END : "Detect deleted files" + } + + + if (exists $commit->{mergemsg}) + { + $self->insert_mergelog($commit->{hash}, $commit->{mergemsg}); + } + + $lastpicked = $commit->{hash}; + + $self->_set_prop("last_commit", $commit->{hash}); + } + + $self->delete_head(); + foreach my $file ( keys %$head ) + { + $self->insert_head( + $file, + $head->{$file}{revision}, + $head->{$file}{filehash}, + $head->{$file}{commithash}, + $head->{$file}{modified}, + $head->{$file}{author}, + $head->{$file}{mode}, + ); + } + # invalidate the gethead cache + $self->{gethead_cache} = undef; + + + # Ending exclusive lock here + $self->{dbh}->commit() or die "Failed to commit changes to SQLite"; +} + +sub insert_rev +{ + my $self = shift; + my $name = shift; + my $revision = shift; + my $filehash = shift; + my $commithash = shift; + my $modified = shift; + my $author = shift; + my $mode = shift; + + my $insert_rev = $self->{dbh}->prepare_cached("INSERT INTO revision (name, revision, filehash, commithash, modified, author, mode) VALUES (?,?,?,?,?,?,?)",{},1); + $insert_rev->execute($name, $revision, $filehash, $commithash, $modified, $author, $mode); +} + +sub insert_mergelog +{ + my $self = shift; + my $key = shift; + my $value = shift; + + my $insert_mergelog = $self->{dbh}->prepare_cached("INSERT INTO commitmsgs (key, value) VALUES (?,?)",{},1); + $insert_mergelog->execute($key, $value); +} + +sub delete_head +{ + my $self = shift; + + my $delete_head = $self->{dbh}->prepare_cached("DELETE FROM head",{},1); + $delete_head->execute(); +} + +sub insert_head +{ + my $self = shift; + my $name = shift; + my $revision = shift; + my $filehash = shift; + my $commithash = shift; + my $modified = shift; + my $author = shift; + my $mode = shift; + + my $insert_head = $self->{dbh}->prepare_cached("INSERT INTO head (name, revision, filehash, commithash, modified, author, mode) VALUES (?,?,?,?,?,?,?)",{},1); + $insert_head->execute($name, $revision, $filehash, $commithash, $modified, $author, $mode); +} + +sub _headrev +{ + my $self = shift; + my $filename = shift; + + my $db_query = $self->{dbh}->prepare_cached("SELECT filehash, revision, mode FROM head WHERE name=?",{},1); + $db_query->execute($filename); + my ( $hash, $revision, $mode ) = $db_query->fetchrow_array; + + return ( $hash, $revision, $mode ); +} + +sub _get_prop +{ + my $self = shift; + my $key = shift; + + my $db_query = $self->{dbh}->prepare_cached("SELECT value FROM properties WHERE key=?",{},1); + $db_query->execute($key); + my ( $value ) = $db_query->fetchrow_array; + + return $value; +} + +sub _set_prop +{ + my $self = shift; + my $key = shift; + my $value = shift; + + my $db_query = $self->{dbh}->prepare_cached("UPDATE properties SET value=? WHERE key=?",{},1); + $db_query->execute($value, $key); + + unless ( $db_query->rows ) + { + $db_query = $self->{dbh}->prepare_cached("INSERT INTO properties (key, value) VALUES (?,?)",{},1); + $db_query->execute($key, $value); + } + + return $value; +} + +=head2 gethead + +=cut + +sub gethead +{ + my $self = shift; + + return $self->{gethead_cache} if ( defined ( $self->{gethead_cache} ) ); + + my $db_query = $self->{dbh}->prepare_cached("SELECT name, filehash, mode, revision, modified, commithash, author FROM head ORDER BY name ASC",{},1); + $db_query->execute(); + + my $tree = []; + while ( my $file = $db_query->fetchrow_hashref ) + { + push @$tree, $file; + } + + $self->{gethead_cache} = $tree; + + return $tree; +} + +=head2 getlog + +=cut + +sub getlog +{ + my $self = shift; + my $filename = shift; + + my $db_query = $self->{dbh}->prepare_cached("SELECT name, filehash, author, mode, revision, modified, commithash FROM revision WHERE name=? ORDER BY revision DESC",{},1); + $db_query->execute($filename); + + my $tree = []; + while ( my $file = $db_query->fetchrow_hashref ) + { + push @$tree, $file; + } + + return $tree; +} + +=head2 getmeta + +This function takes a filename (with path) argument and returns a hashref of +metadata for that file. + +=cut + +sub getmeta +{ + my $self = shift; + my $filename = shift; + my $revision = shift; + + my $db_query; + if ( defined($revision) and $revision =~ /^\d+$/ ) + { + $db_query = $self->{dbh}->prepare_cached("SELECT * FROM revision WHERE name=? AND revision=?",{},1); + $db_query->execute($filename, $revision); + } + elsif ( defined($revision) and $revision =~ /^[a-zA-Z0-9]{40}$/ ) + { + $db_query = $self->{dbh}->prepare_cached("SELECT * FROM revision WHERE name=? AND commithash=?",{},1); + $db_query->execute($filename, $revision); + } else { + $db_query = $self->{dbh}->prepare_cached("SELECT * FROM head WHERE name=?",{},1); + $db_query->execute($filename); + } + + return $db_query->fetchrow_hashref; +} + +=head2 commitmessage + +this function takes a commithash and returns the commit message for that commit + +=cut +sub commitmessage +{ + my $self = shift; + my $commithash = shift; + + die("Need commithash") unless ( defined($commithash) and $commithash =~ /^[a-zA-Z0-9]{40}$/ ); + + my $db_query; + $db_query = $self->{dbh}->prepare_cached("SELECT value FROM commitmsgs WHERE key=?",{},1); + $db_query->execute($commithash); + + my ( $message ) = $db_query->fetchrow_array; + + if ( defined ( $message ) ) + { + $message .= " " if ( $message =~ /\n$/ ); + return $message; + } + + my @lines = safe_pipe_capture("git-cat-file", "commit", $commithash); + shift @lines while ( $lines[0] =~ /\S/ ); + $message = join("",@lines); + $message .= " " if ( $message =~ /\n$/ ); + return $message; +} + +=head2 gethistory + +This function takes a filename (with path) argument and returns an arrayofarrays +containing revision,filehash,commithash ordered by revision descending + +=cut +sub gethistory +{ + my $self = shift; + my $filename = shift; + + my $db_query; + $db_query = $self->{dbh}->prepare_cached("SELECT revision, filehash, commithash FROM revision WHERE name=? ORDER BY revision DESC",{},1); + $db_query->execute($filename); + + return $db_query->fetchall_arrayref; +} + +=head2 gethistorydense + +This function takes a filename (with path) argument and returns an arrayofarrays +containing revision,filehash,commithash ordered by revision descending. + +This version of gethistory skips deleted entries -- so it is useful for annotate. +The 'dense' part is a reference to a '--dense' option available for git-rev-list +and other git tools that depend on it. + +=cut +sub gethistorydense +{ + my $self = shift; + my $filename = shift; + + my $db_query; + $db_query = $self->{dbh}->prepare_cached("SELECT revision, filehash, commithash FROM revision WHERE name=? AND filehash!='deleted' ORDER BY revision DESC",{},1); + $db_query->execute($filename); + + return $db_query->fetchall_arrayref; +} + +=head2 in_array() + +from Array::PAT - mimics the in_array() function +found in PHP. Yuck but works for small arrays. + +=cut +sub in_array +{ + my ($check, @array) = @_; + my $retval = 0; + foreach my $test (@array){ + if($check eq $test){ + $retval = 1; + } + } + return $retval; +} + +=head2 safe_pipe_capture + +an alternative to `command` that allows input to be passed as an array +to work around shell problems with weird characters in arguments + +=cut +sub safe_pipe_capture { + + my @output; + + if (my $pid = open my $child, '-|') { + @output = (<$child>); + close $child or die join(' ',@_).": $! $?"; + } else { + exec(@_) or die "$! $?"; # exec() can fail the executable can't be found + } + return wantarray ? @output : join('',@output); +} + +=head2 mangle_dirname + +create a string from a directory name that is suitable to use as +part of a filename, mainly by converting all chars except \w.- to _ + +=cut +sub mangle_dirname { + my $dirname = shift; + return unless defined $dirname; + + $dirname =~ s/[^\w.-]/_/g; + + return $dirname; +} + +1; |