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|
package Gitolite::Conf::Load;
# load conf data from stored files
# ----------------------------------------------------------------------
@EXPORT = qw(
load
access
git_config
env_options
option
repo_missing
creator
vrefs
lister_dispatch
);
use Exporter 'import';
use Cwd;
use Gitolite::Rc;
use Gitolite::Common;
use strict;
use warnings;
# ----------------------------------------------------------------------
# our variables, because they get loaded by a 'do'
our $data_version = '';
our %repos;
our %one_repo;
our %groups;
our %patterns;
our %configs;
our %one_config;
our %split_conf;
my $subconf = 'master';
my %listers = (
'list-groups' => \&list_groups,
'list-users' => \&list_users,
'list-repos' => \&list_repos,
'list-memberships' => \&list_memberships,
'list-members' => \&list_members,
);
# helps maintain the "cache" in both "load_common" and "load_1"
my $last_repo = '';
# ----------------------------------------------------------------------
{
my $loaded_repo = '';
sub load {
my $repo = shift or _die "load() needs a reponame";
trace( 3, "$repo" );
if ( $repo ne $loaded_repo ) {
load_common();
load_1($repo);
$loaded_repo = $repo;
}
}
}
sub access {
my ( $repo, $user, $aa, $ref ) = @_;
trace( 2, $repo, $user, $aa, $ref );
_die "invalid user '$user'" if not( $user and $user =~ $USERNAME_PATT );
sanity($repo);
my @rules;
my $deny_rules;
load($repo);
@rules = rules( $repo, $user );
$deny_rules = option( $repo, 'deny-rules' );
# sanity check the only piece the user can control
_die "invalid characters in ref or filename: '$ref'\n" unless $ref =~ m(^VREF/NAME/) or $ref =~ $REF_OR_FILENAME_PATT;
# apparently we can't always force sanity; at least what we *return*
# should be sane/safe. This pattern is based on REF_OR_FILENAME_PATT.
( my $safe_ref = $ref ) =~ s([^-0-9a-zA-Z._\@/+ :,])(.)g;
trace( 3, "safe_ref", $safe_ref ) if $ref ne $safe_ref;
# when a real repo doesn't exist, ^C is a pre-requisite for any other
# check to give valid results.
if ( $aa ne '^C' and $repo !~ /^\@/ and $repo =~ $REPONAME_PATT and repo_missing($repo) ) {
my $iret = access( $repo, $user, '^C', $ref );
$iret =~ s/\^C/$aa/;
return $iret if $iret =~ /DENIED/;
}
# similarly, ^C must be denied if the repo exists
if ( $aa eq '^C' and not repo_missing($repo) ) {
trace( 2, "DENIED by existence" );
return "$aa $safe_ref $repo $user DENIED by existence";
}
trace( 3, scalar(@rules) . " rules found" );
$rc{RULE_TRACE} = '';
for my $r (@rules) {
$rc{RULE_TRACE} .= " " . $r->[0] . " ";
my $perm = $r->[1];
my $refex = $r->[2]; $refex =~ s(/USER/)(/$user/);
trace( 3, "perm=$perm, refex=$refex" );
$rc{RULE_TRACE} .= "d";
# skip 'deny' rules if the ref is not (yet) known
next if $perm eq '-' and $ref eq 'any' and not $deny_rules;
$rc{RULE_TRACE} .= "r";
# rule matches if ref matches or ref is any (see gitolite-shell)
next unless $ref =~ /^$refex/ or $ref eq 'any';
$rc{RULE_TRACE} .= "D";
trace( 2, "DENIED by $refex" ) if $perm eq '-';
return "$aa $safe_ref $repo $user DENIED by $refex" if $perm eq '-';
# For repo creation, perm will be C and aa will be "^C". For branch
# access, $perm can be RW\+?(C|D|CD|DC)?M?, and $aa can be W, +, C or
# D, or any of these followed by "M".
# We need to turn $aa into a regex that can match a suitable $perm.
# This is trivially true for "^C", "W" and "D", but the others (+, C,
# M) need some tweaking.
# first, quote the '+':
( my $aaq = $aa ) =~ s/\+/\\+/;
# if aa is just "C", the user is trying to create a *branch* (not a
# *repo*), so let's make the pattern clearer to reflect that.
$aaq = "RW.*C" if $aaq eq "C";
# if the aa is, say "WM", make this "W.*M" because the perm could be
# 'RW+M', 'RW+CDM' etc, and they are all valid:
$aaq =~ s/M/.*M/;
$rc{RULE_TRACE} .= "A";
# as far as *this* ref is concerned we're ok
return $refex if ( $perm =~ /$aaq/ );
$rc{RULE_TRACE} .= "p";
}
$rc{RULE_TRACE} .= " F";
trace( 2, "DENIED by fallthru" );
return "$aa $safe_ref $repo $user DENIED by fallthru";
}
# cache control
if ($rc{CACHE}) {
require Gitolite::Cache;
Gitolite::Cache::cache_wrap('Gitolite::Conf::Load::access');
}
sub git_config {
my ( $repo, $key, $empty_values_OK ) = @_;
$key ||= '.';
if ( repo_missing($repo) ) {
load_common();
} else {
load($repo);
}
# read comments bottom up
my %ret =
# and take the second and third elements to make up your new hash
map { $_->[1] => $_->[2] }
# keep only the ones where the second element matches your key
grep { $_->[1] =~ qr($key) }
# sort this list of listrefs by the first element in each list ref'd to
sort { $a->[0] <=> $b->[0] }
# dereference it (into a list of listrefs)
map { @$_ }
# take the value of that entry
map { $configs{$_} }
# if it has an entry in %configs
grep { $configs{$_} }
# for each "repo" that represents us
memberships( 'repo', $repo );
# %configs looks like this (for each 'foo' that is in memberships())
# 'foo' => [ [ 6, 'foo.bar', 'repo' ], [ 7, 'foodbar', 'repoD' ], [ 8, 'foo.czar', 'jule' ] ],
# the first map gets you the value
# [ [ 6, 'foo.bar', 'repo' ], [ 7, 'foodbar', 'repoD' ], [ 8, 'foo.czar', 'jule' ] ],
# the deref gets you
# [ 6, 'foo.bar', 'repo' ], [ 7, 'foodbar', 'repoD' ], [ 8, 'foo.czar', 'jule' ]
# the sort rearranges it (in this case it's already sorted but anyway...)
# the grep gets you this, assuming the key is foo.bar (and "." is regex ".')
# [ 6, 'foo.bar', 'repo' ], [ 7, 'foodbar', 'repoD' ]
# and the final map does this:
# 'foo.bar'=>'repo' , 'foodbar'=>'repoD'
# now some of these will have an empty key; we need to delete them unless
# we're told empty values are OK
unless ($empty_values_OK) {
my ( $k, $v );
while ( ( $k, $v ) = each %ret ) {
delete $ret{$k} if not $v;
}
}
my ( $k, $v );
my $creator = creator($repo);
while ( ( $k, $v ) = each %ret ) {
$v =~ s/%GL_REPO/$repo/g;
$v =~ s/%GL_CREATOR/$creator/g if $creator;
$ret{$k} = $v;
}
map { trace( 3, "$_", "$ret{$_}" ) } ( sort keys %ret ) if $ENV{D};
return \%ret;
}
sub env_options {
return unless -f "$rc{GL_ADMIN_BASE}/conf/gitolite.conf-compiled.pm";
# prevent catch-22 during initial install
my $cwd = getcwd();
my $repo = shift;
map { delete $ENV{$_} } grep { /^GL_OPTION_/ } keys %ENV;
my $h = git_config( $repo, '^gitolite-options.ENV\.' );
while ( my ( $k, $v ) = each %$h ) {
next unless $k =~ /^gitolite-options.ENV\.(\w+)$/;
$ENV{ "GL_OPTION_" . $1 } = $v;
}
# The user find block might return, so we should switch directory now.
# GL_ADMIN_BASE should also be absolute
chdir($cwd);
my $user = shift;
if($user) {
my @pubkeys;
# ssh-authkeys --key-file-name passes the actual pubkey file!
if(defined($ARGV[0])) {
my $f = $rc{GL_ADMIN_BASE}.'/'.$ARGV[0];
push @pubkeys, $f if -f $f;
}
# This catches the base 'user.pub', 'user@host.pub', exact matches
push @pubkeys, `find $rc{GL_ADMIN_BASE}/keydir -type f -name "${user}.pub"`;
# this catches 'user@host@NN.pub' variant, for email-named users with multiple keys
push @pubkeys, `find $rc{GL_ADMIN_BASE}/keydir -type f -name "${user}@*.pub"` if $user =~ m/@/;
chomp(@pubkeys);
return if $#pubkeys <= 0;
# If they have multiple pubkeys, they SHOULD be the same, but we check
# anyway.
foreach my $pubkey (@pubkeys) {
my $pk_fh = _open('<', $pubkey);
while(defined(my $line = <$pk_fh>)) {
chomp($line);
next if $line !~ m/^\s*#/;
$line =~ s/^\s*#\s*//;
my ($variable, $value) = split(/:\s*/, $line, 2);
if(grep(/^\Q${variable}\E$/, @{$rc{'GL_METADATA'}})) {
if(length($value) > 0) {
$variable =~ s/-/_/g;
_die "Metadata $variable has conflicted values: '$ENV{$variable}' vs '$value'" if(defined($ENV{$variable}) and $ENV{$variable} ne $value);
$ENV{$variable} = $value;
}
}
}
close($pk_fh);
}
}
}
sub option {
my ( $repo, $option ) = @_;
$option = "gitolite-options.$option";
my $ret = git_config( $repo, "^\Q$option\E\$" );
return '' unless %$ret;
return $ret->{$option};
}
sub sanity {
my ($repo, $patt) = @_;
$patt ||= $REPOPATT_PATT;
_die "invalid repo '$repo'" if not( $repo and $repo =~ $patt );
_die "'$repo' ends with a '/'" if $repo =~ m(/$);
_die "'$repo' contains '..'" if $repo =~ $REPONAME_PATT and $repo =~ m(\.\.);
_die "'$repo' contains '.git/'" if $repo =~ $REPONAME_PATT and $repo =~ m(\.git/);
_die "'$repo' ends with '.git'" if $repo =~ m(\.git$);
}
sub repo_missing {
my $repo = shift;
sanity($repo);
return not -d "$rc{GL_REPO_BASE}/$repo.git";
}
# ----------------------------------------------------------------------
sub load_common {
_chdir( $rc{GL_ADMIN_BASE} );
# we take an unusual approach to caching this function!
# (requires that first call to load_common is before first call to load_1)
if ( $last_repo and $split_conf{$last_repo} ) {
delete $repos{$last_repo};
delete $configs{$last_repo};
return;
}
my $cc = "./conf/gitolite.conf-compiled.pm";
_die "parse '$cc' failed: " . ( $! or $@ ) unless do $cc;
if ( data_version_mismatch() ) {
_system("gitolite setup");
_die "parse '$cc' failed: " . ( $! or $@ ) unless do $cc;
_die "data version update failed; this is serious" if data_version_mismatch();
}
}
sub load_1 {
my $repo = shift;
return if $repo =~ /^\@/;
trace( 3, $repo );
if ( repo_missing($repo) ) {
trace( 1, "repo '$repo' missing" ) if $repo =~ $REPONAME_PATT;
return;
}
_chdir("$rc{GL_REPO_BASE}/$repo.git");
if ( $repo eq $last_repo ) {
$repos{$repo} = $one_repo{$repo};
$configs{$repo} = $one_config{$repo} if $one_config{$repo};
return;
}
if ( -f "gl-conf" ) {
return if not $split_conf{$repo} and not $rc{ALLOW_ORPHAN_GL_CONF};
my $cc = "./gl-conf";
_die "parse '$cc' failed: " . ( $@ or $! ) unless do $cc;
$last_repo = $repo;
$repos{$repo} = $one_repo{$repo};
$configs{$repo} = $one_config{$repo} if $one_config{$repo};
} else {
_die "split conf set, gl-conf not present for '$repo'" if $split_conf{$repo};
}
}
{
my $lastrepo = '';
my $lastuser = '';
my @cached = ();
sub rules {
my ( $repo, $user ) = @_;
trace( 3, $repo, $user );
return @cached if ( $lastrepo eq $repo and $lastuser eq $user and @cached );
my @rules = ();
my @repos = memberships( 'repo', $repo );
my @users = memberships( 'user', $user, $repo );
trace( 3, "memberships: " . scalar(@repos) . " repos and " . scalar(@users) . " users found" );
for my $r (@repos) {
for my $u (@users) {
push @rules, @{ $repos{$r}{$u} } if exists $repos{$r} and exists $repos{$r}{$u};
}
}
@rules = sort { $a->[0] <=> $b->[0] } @rules;
$lastrepo = $repo;
$lastuser = $user;
@cached = @rules;
# however if the repo was missing, invalidate the cache
$lastrepo = '' if repo_missing($repo);
return @rules;
}
sub vrefs {
my ( $repo, $user ) = @_;
# fill the cache if needed
rules( $repo, $user ) unless ( $lastrepo eq $repo and $lastuser eq $user and @cached );
my %seen;
my @vrefs = grep { /^VREF\// and not $seen{$_}++ } map { $_->[2] } @cached;
return @vrefs;
}
}
sub memberships {
trace( 3, @_ );
my ( $type, $base, $repo ) = @_;
$repo ||= '';
my @ret;
my $base2 = '';
@ret = ( $base, '@all' );
if ( $type eq 'repo' ) {
# first, if a repo, say, pub/sitaram/project, has a gl-creator file
# that says "sitaram", find memberships for pub/CREATOR/project also
$base2 = generic_name($base);
# second, you need to check in %repos also
for my $i ( keys %repos, keys %configs ) {
if ( $base eq $i or $base =~ /^$i$/ or $base2 and ( $base2 eq $i or $base2 =~ /^$i$/ ) ) {
push @ret, $i;
}
}
# add in any group names explicitly given in (GIT_DIR)/gl-repo-groups
push @ret,
map { s/^\@?/\@/; $_ }
grep { ! /[^\w@-]/ }
split (' ', slurp("$ENV{GL_REPO_BASE}/$base.git/gl-repo-groups"))
if -f "$ENV{GL_REPO_BASE}/$base.git/gl-repo-groups";
}
push @ret, @{ $groups{$base} } if exists $groups{$base};
push @ret, @{ $groups{$base2} } if $base2 and exists $groups{$base2};
for my $i ( keys %{ $patterns{groups} } ) {
if ( $base =~ /^$i$/ or $base2 and ( $base2 =~ /^$i$/ ) ) {
push @ret, @{ $groups{$i} };
}
}
push @ret, @{ ext_grouplist($base) } if $type eq 'user' and $rc{GROUPLIST_PGM};
if ( $type eq 'user' and $repo and not repo_missing($repo) ) {
# find the roles this user has when accessing this repo and add those
# in as groupnames he is a member of. You need the already existing
# memberships for this; see below this function for an example
push @ret, user_roles( $base, $repo, @ret );
}
@ret = @{ sort_u( \@ret ) };
trace( 3, sort @ret );
return @ret;
}
=for example
conf/gitolite.conf:
@g1 = u1
@g2 = u1
# now user is a member of both g1 and g2
gl-perms for repo being accessed:
READERS @g1
This should result in @READERS being added to the memberships that u1 has
(when accessing this repo). So we send the current list (@g1, @g2) to
user_roles(), otherwise it has to redo that logic.
=cut
sub data_version_mismatch {
return $data_version ne glrc('current-data-version');
}
sub user_roles {
my ( $user, $repo, @eg ) = @_;
# eg == existing groups (that user is already known to be a member of)
my %eg = map { $_ => 1 } @eg;
my %ret = ();
my $f = "$rc{GL_REPO_BASE}/$repo.git/gl-perms";
my @roles = ();
if ( -f $f ) {
my $fh = _open( "<", $f );
chomp( @roles = <$fh> );
}
push @roles, "CREATOR = " . creator($repo);
for (@roles) {
# READERS u3 u4 @g1
s/^\s+//; s/ +$//; s/=/ /; s/\s+/ /g; s/^\@//;
next if /^#/;
next unless /\S/;
my ( $role, @members ) = split;
# role = READERS, members = u3, u4, @g1
if ( $role ne 'CREATOR' and not $rc{ROLES}{$role} ) {
_warn "role '$role' not allowed, ignoring";
next;
}
for my $m (@members) {
if ( $m !~ $USERNAME_PATT ) {
_warn "ignoring '$m' in perms line";
next;
}
# if user eq u3/u4, or is a member of @g1, he has role READERS
$ret{ '@' . $role } = 1 if $m eq $user or $eg{$m};
}
}
return keys %ret;
}
sub generic_name {
my $base = shift;
my $base2 = '';
my $creator;
# get the creator name. For not-yet-born repos this is $ENV{GL_USER},
# which should be set in all cases that we care about, viz., where we are
# checking ^C permissions before new_wild_repo(), and the info command.
# In particular, 'gitolite access' can't be used to check ^C perms on wild
# repos that contain "CREATOR" if GL_USER is not set.
$creator = creator($base);
$base2 = $base;
$base2 =~ s(\b$creator\b)(CREATOR) if $creator;
$base2 = '' if $base2 eq $base; # if there was no change
return $base2;
}
sub creator {
my $repo = shift;
sanity($repo);
return ( $ENV{GL_USER} || '' ) if repo_missing($repo);
my $f = "$rc{GL_REPO_BASE}/$repo.git/gl-creator";
my $creator = '';
chomp( $creator = slurp($f) ) if -f $f;
return $creator;
}
{
my %cache = ();
sub ext_grouplist {
my $user = shift;
my $pgm = $rc{GROUPLIST_PGM};
return [] if not $pgm;
return $cache{$user} if $cache{$user};
my @extgroups = map { s/^@?/@/; $_; } split ' ', `$rc{GROUPLIST_PGM} $user`;
return ( $cache{$user} = \@extgroups );
}
}
# ----------------------------------------------------------------------
# api functions
# ----------------------------------------------------------------------
sub lister_dispatch {
my $command = shift;
my $fn = $listers{$command} or _die "unknown gitolite sub-command";
return $fn;
}
=for list_groups
Usage: gitolite list-groups
- lists all group names in conf
- no options, no flags
=cut
sub list_groups {
usage() if @_;
load_common();
my @g = ();
while ( my ( $k, $v ) = each(%groups) ) {
push @g, @{$v};
}
return ( sort_u( \@g ) );
}
=for list_users
Usage: gitolite list-users [<repo name pattern>]
List all users and groups explicitly named in a rule.
- you will have to run 'list-members' on each group name to expand it -- for
details and caveats on that please see its help message.
- User names not mentioned in an access rule will not show up at all (for
example, if you have users who only have access via an '@all' rule).
WARNING: may be slow if you have thousands of repos. The optional repo name
pattern is an unanchored regex; it can speed things up if you're interested
only in users of a matching set of repos. This is only an optimisation, not
an actual access list; you will still have to pipe it to 'gitolite access'
with appropriate arguments to get an actual access list.
NOTE: If you're running in ssh mode, it may be simpler to parse the authorized
keys file in ~/.ssh, like so:
perl -lne '/ ([a-z0-9]+)"/; print $1 if $1' < ~/.ssh/authorized_keys | sort -u
If you're running in http mode, only your web server knows all the potential
user names.
=cut
sub list_users {
my $patt = shift || '.';
usage() if $patt eq '-h' or @_;
my $count = 0;
my $total = 0;
load_common();
my @u = map { keys %{$_} } values %repos;
$total = scalar( grep { /$patt/ } keys %split_conf );
warn "WARNING: you have $total repos to check; this could take some time!\n" if $total > 100;
for my $one ( grep { /$patt/ } keys %split_conf ) {
load_1($one);
$count++; print STDERR "$count / $total\r" if not( $count % 100 ) and timer(5);
push @u, map { keys %{$_} } values %one_repo;
}
print STDERR "\n" if $count >= 100;
return ( sort_u( \@u ) );
}
=for list_repos
Usage: gitolite list-repos
- lists all repos/repo groups in conf
- no options, no flags
=cut
sub list_repos {
usage() if @_;
load_common();
my @r = keys %repos;
push @r, keys %split_conf;
return ( sort_u( \@r ) );
}
=for list_memberships
Usage: gitolite list-memberships -u|-r <name>
List all groups a name is a member of. One of the flags '-u' or '-r' is
mandatory, to specify if the name is a user or a repo.
For users, the output includes the result from GROUPLIST_PGM, if it is
defined. For repos, the output includes any repo patterns that the repo name
matches, as well as any groups that contain those patterns.
=cut
sub list_memberships {
require Getopt::Long;
my ( $user, $repo, $help );
Getopt::Long::GetOptionsFromArray(
\@_,
'user|u=s' => \$user,
'repo|r=s' => \$repo,
'help|h' => \$help,
);
usage() if $help or ( not $user and not $repo );
load_common();
my @m;
if ( $user and $repo ) {
# unsupported/undocumented except via "in_role()" in Easy.pm
@m = memberships( 'user', $user, $repo );
} elsif ($user) {
@m = memberships( 'user', $user );
} elsif ($repo) {
@m = memberships( 'repo', $repo );
}
@m = grep { $_ ne '@all' and $_ ne ( $user || $repo ) } @m;
return ( sort_u( \@m ) );
}
=for list_members
Usage: gitolite list-members <group name>
- list all members of a group
- takes one group name
'@all' is not expandable in this context. Also, if you have GROUPLIST_PGM set
in your rc file[1], gitolite cannot expand group names completely; only your
external database can.
[1]: http://gitolite.com/gitolite/conf.html#ldap
=cut
sub list_members {
usage() if @_ and $_[0] eq '-h' or not @_;
my $name = shift;
load_common();
my @m = ();
while ( my ( $k, $v ) = each(%groups) ) {
for my $g ( @{$v} ) {
push @m, $k if $g eq $name;
}
}
return ( sort_u( \@m ) );
}
# ----------------------------------------------------------------------
{
my $start_time = 0;
sub timer {
unless ($start_time) {
$start_time = time();
return 0;
}
my $elapsed = shift;
return 0 if time() - $start_time < $elapsed;
$start_time = time();
return 1;
}
}
1;
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