B<mr> [options] log
-B<mr> [options] bootstrap url
+B<mr> [options] bootstrap url [directory]
B<mr> [options] register [repository]
B<mr> is a Multiple Repository management tool. It can checkout, update, or
perform other actions on a set of repositories as if they were one combined
-repository. It supports any combination of subversion, git, cvs, mecurial,
+repository. It supports any combination of subversion, git, cvs, mercurial,
bzr and darcs repositories, and support for other revision control systems can
easily be added.
contains no other registered repositories, it will stay in that directory,
and work on only that repository,
+B<mr> is configured by .mrconfig files, which list the repositories. It
+starts by reading the .mrconfig file in your home directory, and this can
+in turn chain load .mrconfig files from repositories.
+
These predefined commands should be fairly familiar to users of any revision
control system:
=over 4
-=item bootstrap url
+=item bootstrap url [directory]
+
+Causes mr to download the url, and use it as a .mrconfig file
+to checkout the repositories listed in it, into the specified directory.
-Causes mr to download the url, save it to a .mrconfig file in the
-current directory, and then check out all repositories listed in it.
+The directory will be created if it does not exist. If no directory is
+specified, the current directory will be used.
-(Please only do this if you have reason to trust the url, since
-mrconfig files can contain arbitrary commands!)
+If the .mrconfig file includes a repository named ".", that
+is checked out into the top of the specified directory.
=item list (or ls)
=item -d directory
+=item --directory directory
+
Specifies the topmost directory that B<mr> should work in. The default is
the current working directory.
=item -c mrconfig
+=item --config mrconfig
+
Use the specified mrconfig file. The default is B<~/.mrconfig>
=item -p
+=item --path
+
Search in the current directory, and its parent directories and use
the first B<.mrconfig> found, instead of the default B<~/.mrconfig>.
=item -v
+=item --verbose
+
Be verbose.
=item -q
+=item --quiet
+
Be quiet.
=item -s
+=item --stats
+
Expand the statistics line displayed at the end to include information
about exactly which repositories failed and were skipped, if any.
=item -i
+=item --interactive
+
Interactive mode. If a repository fails to be processed, a subshell will be
started which you can use to resolve or investigate the problem. Exit the
subshell to continue the mr run.
=item -n [number]
+=item --no-recurse [number]
+
If no number if specified, just operate on the repository for the current
directory, do not recurse into deeper repositories.
=item -j [number]
+=item --jobs [number]
+
Run the specified number of jobs in parallel, or an unlimited number of jobs
with no number specified. This can greatly speed up operations such as updates.
It is not recommended for interactive operations.
ssh connection limits. Running between 3 and 5 jobs at a time will yield
a good speedup in updates without loading the machine too much.
-=back
+=item -t
+
+=item --trust-all
-=head1 FILES
+Trust all mrconfig files even if they are not listed in ~/.mrtrust.
+Use with caution.
-B<mr> is configured by .mrconfig files. It starts by reading the .mrconfig
-file in your home directory, and this can in turn chain load .mrconfig files
-from repositories.
+=back
+
+=head1 "MRCONFIG FILES"
Here is an example .mrconfig file:
=item chain
If the "chain" parameter is set and its command returns true, then B<mr>
-will try to load a .mrconfig file from the root of the repository. (You
-should avoid chaining from repositories with untrusted committers.)
+will try to load a .mrconfig file from the root of the repository.
=item include
or even to add other commands for 'mr online' to run. If the file is
present, mr assumes it is in offline mode.
+=head1 "UNTRUSTED MRCONFIG FILES"
+
+Since mrconfig files can contain arbitrary shell commands, they can do
+anything. This flexability is good, but it also allows a malicious mrconfig
+file to delete your whole home directory. Such a file might be contained
+inside a repository that your main ~/.mrconfig checks out and chains to. To
+avoid worries about evil commands in a mrconfig file, mr
+has the ability to read mrconfig files in untrusted mode. Such files are
+limited to running only known safe commands (like "git clone") in a
+carefully checked manner.
+
+By default, mr trusts all mrconfig files. (This default will change in a
+future release!) But if you have a ~/.mrtrust file, mr will only trust
+mrconfig files that are listed within it. (One file per line.) All other
+files will be treated as untrusted.
+
=head1 EXTENSIONS
mr can be extended to support things such as unison and git-svn. Some
my $max_depth;
my $no_chdir=0;
my $jobs=1;
+my $trust_all=0;
my $directory=getcwd();
$ENV{MR_CONFIG}="$ENV{HOME}/.mrconfig";
}
sub action {
- my ($action, $dir, $topdir, $subdir) = @_;
+ my ($action, $dir, $topdir, $subdir, $force_checkout) = @_;
$ENV{MR_CONFIG}=$configfiles{$topdir};
my $lib=exists $config{$topdir}{$subdir}{lib} ?
$ENV{MR_REPO}=$dir;
if ($is_checkout) {
- if (-d $dir) {
- print "mr $action: $dir already exists, skipping checkout\n" if $verbose;
- return SKIPPED;
+ if (! $force_checkout) {
+ if (-d $dir) {
+ print "mr $action: $dir already exists, skipping checkout\n" if $verbose;
+ return SKIPPED;
+ }
+
+ $dir=~s/^(.*)\/[^\/]+\/?$/$1/;
}
-
- $dir=~s/^(.*)\/[^\/]+\/?$/$1/;
}
elsif ($action =~ /update/) {
if (! -d $dir) {
if ($interactive) {
chdir($dir) unless $no_chdir;
print STDERR "mr: Starting interactive shell. Exit shell to continue.\n";
- system((getpwuid($<))[8]);
+ system((getpwuid($<))[8], "-i");
}
push @failed, $dir;
print "\n";
return $val;
}
+my %trusted;
+sub is_trusted_config {
+ my $config=shift; # must be abs_pathed already
+
+ # We always trust ~/.mrconfig.
+ return 1 if $config eq abs_path("$ENV{HOME}/.mrconfig");
+
+ return 1 if $trust_all;
+
+ my $trustfile=$ENV{HOME}."/.mrtrust";
+
+ if (! -e $trustfile) {
+ print "mr: Assuming $config is trusted.\n";
+ print "mr: For better security, you are encouraged to create ~/.mrtrust\n";
+ print "mr: and list all trusted mrconfig files in it.\n";
+ return 1;
+ }
+
+ if (! %trusted) {
+ $trusted{"$ENV{HOME}/.mrconfig"}=1;
+ open (TRUST, "<", $trustfile) || die "$trustfile: $!";
+ while (<TRUST>) {
+ chomp;
+ s/^~\//$ENV{HOME}\//;
+ $trusted{abs_path($_)}=1;
+ }
+ close TRUST;
+ }
+
+ return $trusted{$config};
+}
+
+
+sub is_trusted_repo {
+ my $repo=shift;
+
+ # Tightly limit what is allowed in a repo name.
+ # No ../, no absolute paths, and no unusual filenames
+ # that might try to escape to the shell.
+ return $repo =~ /^[-_.+\/A-Za-z0-9]+$/ &&
+ $repo !~ /\.\./ && $repo !~ /^\//;
+}
+
+sub is_trusted_checkout {
+ my $command=shift;
+
+ # To determine if the command is safe, compare it with the
+ # *_trusted_checkout config settings. Those settings are
+ # templates for allowed commands, so make sure that each word
+ # of the command matches the corresponding word of the template.
+
+ my @words;
+ foreach my $word (split(' ', $command)) {
+ # strip quoting
+ if ($word=~/^'(.*)'$/) {
+ $word=$1;
+ }
+ elsif ($word=~/^"(.*)"$/) {
+ $word=$1;
+ }
+
+ push @words, $word;
+ }
+
+ foreach my $key (grep { /_trusted_checkout$/ }
+ keys %{$config{''}{DEFAULT}}) {
+ my @twords=split(' ', $config{''}{DEFAULT}{$key});
+ next if @words > @twords;
+
+ my $match=1;
+ my $url;
+ for (my $c=0; $c < @twords && $match; $c++) {
+ if ($twords[$c] eq '$url') {
+ # Match all the typical characters found in
+ # urls, plus @ which svn can use. Note
+ # that the "url" might also be a local
+ # directory.
+ $match=(
+ defined $words[$c] &&
+ $words[$c] =~ /^[-_.+:@\/A-Za-z0-9]+$/
+ );
+ $url=$words[$c];
+ }
+ elsif ($twords[$c] eq '$repo') {
+ # If a repo is not specified, assume it
+ # will be the last path component of the
+ # url, or something derived from it, and
+ # check that.
+ if (! defined $words[$c] && defined $url) {
+ ($words[$c])=$url=~/\/([^\/]+)\/?$/;
+ }
+
+ $match=(
+ defined $words[$c] &&
+ is_trusted_repo($words[$c])
+ );
+ }
+ elsif (defined $words[$c] && $twords[$c] eq $words[$c]) {
+ $match=1;
+ }
+ else {
+ $match=0;
+ }
+ }
+ return 1 if $match;
+ }
+
+ return 0;
+}
+
my %loaded;
sub loadconfig {
my $f=shift;
+ my $dir=shift;
my @toload;
my $in;
- my $dir;
+ my $trusted;
if (ref $f eq 'GLOB') {
$dir="";
- $in=$f;
+ $in=$f;
+ $trusted=1;
}
else {
if (! -e $f) {
}
$loaded{$absf}=1;
- ($dir)=$f=~/^(.*\/)[^\/]+$/;
+ $trusted=is_trusted_config($absf);
+
if (! defined $dir) {
- $dir=".";
+ ($dir)=$f=~/^(.*\/)[^\/]+$/;
+ if (! defined $dir) {
+ $dir=".";
+ }
}
+
$dir=abs_path($dir)."/";
if (! exists $configfiles{$dir}) {
chomp;
next if /^\s*\#/ || /^\s*$/;
if (/^\[([^\]]*)\]\s*$/) {
- $section=expandenv($1);
+ $section=$1;
+
+ if (! $trusted) {
+ if (! is_trusted_repo($section) ||
+ $section eq 'ALIAS' ||
+ $section eq 'DEFAULT') {
+ die "mr: illegal section \"[$section]\" in untrusted $f line $line\n";
+ }
+ }
+ $section=expandenv($section) if $trusted;
}
elsif (/^(\w+)\s*=\s*(.*)/) {
my $parameter=$1;
chomp $value;
}
+ if (! $trusted) {
+ # Untrusted files can only contain checkout
+ # parameters.
+ if ($parameter ne 'checkout') {
+ die "mr: illegal setting \"$parameter=$value\" in untrusted $f line $line\n";
+ }
+ if (! is_trusted_checkout($value)) {
+ die "mr: illegal checkout command \"$value\" in untrusted $f line $line\n";
+ }
+ }
+
if ($parameter eq "include") {
print "mr: including output of \"$value\"\n" if $verbose;
unshift @lines, `$value`;
sub bootstrap {
my $url=shift @ARGV;
-
+ my $dir=shift @ARGV || ".";
+
if (! defined $url || ! length $url) {
die "mr: bootstrap requires url\n";
}
+
+ # Download the config file to a temporary location.
+ eval q{use File::Temp};
+ die $@ if $@;
+ my $tmpconfig=File::Temp->new();
+ if (system("curl", "-A", "mr", "-s", $url, "-o", $tmpconfig) != 0) {
+ die "mr: download of $url failed\n";
+ }
- if (-e ".mrconfig") {
- die "mr: .mrconfig file already exists, not overwriting with $url\n";
+ if (! -e $dir) {
+ system("mkdir", "-p", $dir);
}
+ chdir($dir) || die "chdir $dir: $!";
- if (system("curl", "-s", $url, "-o", ".mrconfig") != 0) {
- die "mr: download of $url failed\n";
+ # Special case to handle checkout of the "." repo, which
+ # would normally be skipped.
+ my $topdir=abs_path(".")."/";
+ my @repo=($topdir, $topdir, ".");
+ loadconfig($tmpconfig, $topdir);
+ record(\@repo, action("checkout", @repo, 1))
+ if exists $config{$topdir}{"."}{"checkout"};
+
+ if (-e ".mrconfig") {
+ print STDERR "mr: .mrconfig file already exists, not overwriting with $url\n";
+ }
+ else {
+ eval q{use File::Copy};
+ die $@ if $@;
+ move($tmpconfig, ".mrconfig") || die "rename: $!";
}
exec("mr $ENV{MR_SWITCHES} -c .mrconfig checkout");
"i|interactive" => \$interactive,
"n|no-recurse:i" => \$max_depth,
"j|jobs:i" => \$jobs,
+ "t|trust-all" => \$trust_all,
);
if (! $result || @ARGV < 1) {
- die("Usage: mr [-d directory] action [params ...]\n".
+ die("Usage: mr [options] action [params ...]\n".
"(Use mr help for man page.)\n");
}
echo "Registering git url: $url in $MR_CONFIG"
mr -c "$MR_CONFIG" config "`pwd`" checkout="git clone --bare '$url' '$MR_REPO'"
+svn_trusted_checkout = svn co $url $repo
+svn_alt_trusted_checkout = svn checkout $url $repo
+git_trusted_checkout = git clone $url $repo
+bzr_trusted_checkout = bzr clone $url $repo
+# cvs: too hard
+hg_trusted_checkout = hg clone $url $repo
+darcs_trusted_checkout = darcs get $url $repo
+git_bare_trusted_checkout = git clone --bare $url $repo
+
+
help =
+ case `uname -s` in
+ SunOS)
+ SHOWMANFILE="man -f"
+ ;;
+ Darwin)
+ SHOWMANFILE="man"
+ ;;
+ *)
+ SHOWMANFILE="man -l"
+ ;;
+ esac
if [ ! -e "$MR_PATH" ]; then
error "cannot find program path"
fi
tmp=$(mktemp -t mr.XXXXXXXXXX) || error "mktemp failed"
trap "rm -f $tmp" exit
pod2man -c mr "$MR_PATH" > "$tmp" || error "pod2man failed"
- man -l "$tmp" || error "man failed"
+ $SHOWMANFILE "$tmp" || error "man failed"
list = true
config =
bootstrap =
projects / code / myrepos.git / blobdiff