+#!/usr/pkg/bin/perl
+package IkiWiki::Plugin::cvs;
+
+use warnings;
+use strict;
+use IkiWiki;
+
+sub import {
+ hook(type => "checkconfig", id => "cvs", call => \&checkconfig);
+ hook(type => "getsetup", id => "cvs", call => \&getsetup);
+ hook(type => "rcs", id => "rcs_update", call => \&rcs_update);
+ hook(type => "rcs", id => "rcs_prepedit", call => \&rcs_prepedit);
+ hook(type => "rcs", id => "rcs_commit", call => \&rcs_commit);
+ hook(type => "rcs", id => "rcs_commit_staged", call => \&rcs_commit_staged);
+ hook(type => "rcs", id => "rcs_add", call => \&rcs_add);
+ hook(type => "rcs", id => "rcs_remove", call => \&rcs_remove);
+ hook(type => "rcs", id => "rcs_rename", call => \&rcs_rename);
+ hook(type => "rcs", id => "rcs_recentchanges", call => \&rcs_recentchanges);
+ hook(type => "rcs", id => "rcs_diff", call => \&rcs_diff);
+ hook(type => "rcs", id => "rcs_getctime", call => \&rcs_getctime);
+}
+
+sub checkconfig () {
+ if (! defined $config{cvspath}) {
+ $config{cvspath}="ikiwiki";
+ }
+ if (exists $config{cvspath}) {
+ # code depends on the path not having extraneous slashes
+ $config{cvspath}=~tr#/#/#s;
+ $config{cvspath}=~s/\/$//;
+ $config{cvspath}=~s/^\///;
+ }
+ if (defined $config{cvs_wrapper} && length $config{cvs_wrapper}) {
+ push @{$config{wrappers}}, {
+ wrapper => $config{cvs_wrapper},
+ wrappermode => (defined $config{cvs_wrappermode} ? $config{cvs_wrappermode} : "04755"),
+ };
+ }
+}
+
+sub getsetup () {
+ return
+ plugin => {
+ safe => 0, # rcs plugin
+ rebuild => undef,
+ },
+ cvsrepo => {
+ type => "string",
+ example => "/cvs/wikirepo",
+ description => "cvs repository location",
+ safe => 0, # path
+ rebuild => 0,
+ },
+ cvspath => {
+ type => "string",
+ example => "ikiwiki",
+ description => "path inside repository where the wiki is located",
+ safe => 0, # paranoia
+ rebuild => 0,
+ },
+ cvs_wrapper => {
+ type => "string",
+ example => "/cvs/wikirepo/CVSROOT/post-commit",
+ description => "cvs post-commit hook to generate (triggered by CVSROOT/loginfo entry",
+ safe => 0, # file
+ rebuild => 0,
+ },
+ cvs_wrappermode => {
+ type => "string",
+ example => '04755',
+ description => "mode for cvs_wrapper (can safely be made suid)",
+ safe => 0,
+ rebuild => 0,
+ },
+ historyurl => {
+ type => "string",
+ example => "http://cvs.example.org/cvsweb.cgi/ikiwiki/[[file]]",
+ description => "cvsweb url to show file history ([[file]] substituted)",
+ safe => 1,
+ rebuild => 1,
+ },
+ diffurl => {
+ type => "string",
+ example => "http://cvs.example.org/cvsweb.cgi/ikiwiki/[[file]].diff?r1=text&tr1=[[r1]]&r2=text&tr2=[[r2]]",
+ description => "cvsweb url to show a diff ([[file]], [[r1]], and [[r2]] substituted)",
+ safe => 1,
+ rebuild => 1,
+ },
+}
+
+sub cvs_info ($$) {
+ my $field=shift;
+ my $file=shift;
+
+ chdir $config{srcdir} || error("Cannot chdir to $config{srcdir}: $!");
+
+ my $info=`cvs status $file`;
+ my ($ret)=$info=~/^\s*$field:\s*(\S+)/m;
+ return $ret;
+}
+
+sub cvs_runcvs(@) {
+ my ($cmd) = @_;
+ unshift @$cmd, 'cvs', '-Q';
+
+ eval q{
+ use IPC::Cmd;
+ };
+ error($@) if $@;
+
+ chdir $config{srcdir} || error("Cannot chdir to $config{srcdir}: $!");
+
+ debug("runcvs: " . join(" ", @$cmd));
+
+ my ($success, $error_code, $full_buf, $stdout_buf, $stderr_buf) =
+ IPC::Cmd::run(command => $cmd, verbose => 0);
+ if (! $success) {
+ warn(join(" ", @$cmd) . " exited with code $error_code\n");
+ warn(join "", @$stderr_buf);
+ }
+ return $success;
+}
+
+sub cvs_shquote_commit ($) {
+ my $message = shift;
+
+ eval q{
+ use String::ShellQuote;
+ };
+ error($@) if $@;
+
+ return shell_quote(IkiWiki::possibly_foolish_untaint($message));
+}
+
+sub cvs_is_controlling {
+ my $dir=shift;
+ $dir=$config{srcdir} unless defined($dir);
+ return (-d "$dir/CVS") ? 1 : 0;
+}
+
+sub rcs_update () {
+ return unless cvs_is_controlling;
+ cvs_runcvs(['update', '-dP']);
+}
+
+sub rcs_prepedit ($) {
+ # Prepares to edit a file under revision control. Returns a token
+ # that must be passed into rcs_commit when the file is ready
+ # for committing.
+ # The file is relative to the srcdir.
+ my $file=shift;
+
+ return unless cvs_is_controlling;
+
+ # For cvs, return the revision of the file when
+ # editing begins.
+ my $rev=cvs_info("Repository revision", "$file");
+ return defined $rev ? $rev : "";
+}
+
+sub rcs_commit ($$$;$$) {
+ # Tries to commit the page; returns undef on _success_ and
+ # a version of the page with the rcs's conflict markers on failure.
+ # The file is relative to the srcdir.
+ my $file=shift;
+ my $message=shift;
+ my $rcstoken=shift;
+ my $user=shift;
+ my $ipaddr=shift;
+
+ return unless cvs_is_controlling;
+
+ if (defined $user) {
+ $message="web commit by $user".(length $message ? ": $message" : "");
+ }
+ elsif (defined $ipaddr) {
+ $message="web commit from $ipaddr".(length $message ? ": $message" : "");
+ }
+
+ # Check to see if the page has been changed by someone
+ # else since rcs_prepedit was called.
+ my ($oldrev)=$rcstoken=~/^([0-9]+)$/; # untaint
+ my $rev=cvs_info("Repository revision", "$config{srcdir}/$file");
+ if (defined $rev && defined $oldrev && $rev != $oldrev) {
+ # Merge their changes into the file that we've
+ # changed.
+ cvs_runcvs(['update', $file]) ||
+ warn("cvs merge from $oldrev to $rev failed\n");
+ }
+
+ if (! cvs_runcvs(['commit', '-m', cvs_shquote_commit $message])) {
+ my $conflict=readfile("$config{srcdir}/$file");
+ cvs_runcvs(['update', '-C', $file]) ||
+ warn("cvs revert failed\n");
+ return $conflict;
+ }
+
+ return undef # success
+}
+
+sub rcs_commit_staged ($$$) {
+ # Commits all staged changes. Changes can be staged using rcs_add,
+ # rcs_remove, and rcs_rename.
+ my ($message, $user, $ipaddr)=@_;
+
+ if (defined $user) {
+ $message="web commit by $user".(length $message ? ": $message" : "");
+ }
+ elsif (defined $ipaddr) {
+ $message="web commit from $ipaddr".(length $message ? ": $message" : "");
+ }
+
+ if (! cvs_runcvs(['commit', '-m', cvs_shquote_commit $message])) {
+ warn "cvs staged commit failed\n";
+ return 1; # failure
+ }
+ return undef # success
+}
+
+sub rcs_add ($) {
+ # filename is relative to the root of the srcdir
+ my $file=shift;
+ my $parent=IkiWiki::dirname($file);
+ my @files_to_add = ($file);
+
+ until ((length($parent) == 0) || cvs_is_controlling("$config{srcdir}/$parent")){
+ push @files_to_add, $parent;
+ $parent = IkiWiki::dirname($parent);
+ }
+
+ while ($file = pop @files_to_add) {
+ cvs_runcvs(['add', $file]) ||
+ warn("cvs add $file failed\n");
+ }
+}
+
+sub rcs_remove ($) {
+ # filename is relative to the root of the srcdir
+ my $file=shift;
+
+ return unless cvs_is_controlling;
+
+ cvs_runcvs(['rm', '-f', $file]) ||
+ warn("cvs rm $file failed\n");
+}
+
+sub rcs_rename ($$) {
+ # filenames relative to the root of the srcdir
+ my ($src, $dest)=@_;
+
+ return unless cvs_is_controlling;
+
+ chdir $config{srcdir} || error("Cannot chdir to $config{srcdir}: $!");
+
+ if (system("mv", "$src", "$dest") != 0) {
+ warn("filesystem rename failed\n");
+ }
+
+ rcs_add($dest);
+ rcs_remove($src);
+}
+
+sub rcs_recentchanges($) {
+ my $num = shift;
+ my @ret;
+
+ return unless cvs_is_controlling;
+
+ eval q{
+ use Date::Parse;
+ };
+ error($@) if $@;
+
+ chdir $config{srcdir} || error("Cannot chdir to $config{srcdir}: $!");
+
+ open CVSPS, "env TZ=UTC cvsps -q --cvs-direct -z 30 -x |" || error "couldn't get cvsps output: $!\n";
+ my @spsvc = reverse <CVSPS>; # is this great? no it is not
+ close CVSPS || error "couldn't close cvsps output: $!\n";
+
+ while (my $line = shift @spsvc) {
+ $line =~ /^$/ || error "expected blank line, got $line";
+
+ my ($rev, $user, $committype, $when);
+ my (@message, @pages);
+
+ # We're reading backwards.
+ # Forwards, an entry looks like so:
+ # ---------------------
+ # PatchSet $rev
+ # Date: $when
+ # Author: $user (or user CGI runs as, for web commits)
+ # Branch: branch
+ # Tag: tag
+ # Log:
+ # @message_lines
+ # Members:
+ # @pages (and revisions)
+ #
+
+ while ($line = shift @spsvc) {
+ last if ($line =~ /^Members:/);
+ for ($line) {
+ s/^\s+//;
+ s/\s+$//;
+ }
+ my ($page, $revs) = split(/:/, $line);
+ my ($oldrev, $newrev) = split(/->/, $revs);
+ $oldrev =~ s/INITIAL/0/;
+ $newrev =~ s/\(DEAD\)//;
+ my $diffurl = defined $config{diffurl} ? $config{diffurl} : "";
+ $diffurl=~s/\[\[file\]\]/$page/g;
+ $diffurl=~s/\[\[r1\]\]/$oldrev/g;
+ $diffurl=~s/\[\[r2\]\]/$newrev/g;
+ unshift @pages, {
+ page => pagename($page),
+ diffurl => $diffurl,
+ } if length $page;
+ }
+
+ while ($line = shift @spsvc) {
+ last if ($line =~ /^Log:$/);
+ chomp $line;
+ unshift @message, { line => $line };
+ }
+ $committype = "web";
+ if (defined $message[0] &&
+ $message[0]->{line}=~/$config{web_commit_regexp}/) {
+ $user=defined $2 ? "$2" : "$3";
+ $message[0]->{line}=$4;
+ } else {
+ $committype="cvs";
+ }
+
+ $line = shift @spsvc; # Tag
+ $line = shift @spsvc; # Branch
+
+ $line = shift @spsvc;
+ if ($line =~ /^Author: (.*)$/) {
+ $user = $1 unless defined $user && length $user;
+ } else {
+ error "expected Author, got $line";
+ }
+
+ $line = shift @spsvc;
+ if ($line =~ /^Date: (.*)$/) {
+ $when = str2time($1, 'UTC');
+ } else {
+ error "expected Date, got $line";
+ }
+
+ $line = shift @spsvc;
+ if ($line =~ /^PatchSet (.*)$/) {
+ $rev = $1;
+ } else {
+ error "expected PatchSet, got $line";
+ }
+
+ $line = shift @spsvc; # ---------------------
+
+ push @ret, {
+ rev => $rev,
+ user => $user,
+ committype => $committype,
+ when => $when,
+ message => [@message],
+ pages => [@pages],
+ } if @pages;
+ return @ret if @ret >= $num;
+ }
+
+ return @ret;
+}
+
+sub rcs_diff ($) {
+ my $rev=IkiWiki::possibly_foolish_untaint(int(shift));
+
+ chdir $config{srcdir} || error("Cannot chdir to $config{srcdir}: $!");
+
+ # diff output is unavoidably preceded by the cvsps PatchSet entry
+ my @cvsps = `env TZ=UTC cvsps -q --cvs-direct -z 30 -g -s $rev`;
+ my $blank_lines_seen = 0;
+
+ while (my $line = shift @cvsps) {
+ $blank_lines_seen++ if ($line =~ /^$/);
+ last if $blank_lines_seen == 2;
+ }
+
+ if (wantarray) {
+ return @cvsps;
+ } else {
+ return join("", @cvsps);
+ }
+}
+
+sub rcs_getctime ($) {
+ my $file=shift;
+
+ my $cvs_log_infoline=qr/^date: (.+);\s+author/;
+
+ open CVSLOG, "cvs -Q log -r1.1 '$file' |"
+ || error "couldn't get cvs log output: $!\n";
+
+ my $date;
+ while (<CVSLOG>) {
+ if (/$cvs_log_infoline/) {
+ $date=$1;
+ }
+ }
+ close CVSLOG || warn "cvs log $file exited $?";
+
+ if (! defined $date) {
+ warn "failed to parse cvs log for $file\n";
+ return 0;
+ }
+
+ eval q{use Date::Parse};
+ error($@) if $@;
+ $date=str2time($date, 'UTC');
+ debug("found ctime ".localtime($date)." for $file");
+ return $date;
+}
+
+1