- #!/usr/bin/perl
- package IkiWiki::Receive;
- use warnings;
- use strict;
- use IkiWiki;
- sub getuser () {
- my $user=(getpwuid(exists $ENV{CALLER_UID} ? $ENV{CALLER_UID} : $<))[0];
- if (! defined $user) {
- error("cannot determine username for $<");
- }
- return $user;
- }
- sub trusted () {
- my $user=getuser();
- return ! ref $config{untrusted_committers} ||
- ! grep { $_ eq $user } @{$config{untrusted_committers}};
- }
- sub genwrapper () {
- # Test for commits from untrusted committers in the wrapper, to
- # avoid starting ikiwiki proper at all for trusted commits.
- my $ret=<<"EOF";
- {
- int u=getuid();
- EOF
- $ret.="\t\tif ( ".
- join("&&", map {
- my $uid=getpwnam($_);
- if (! defined $uid) {
- error(sprintf(gettext("cannot determine id of untrusted committer %s"), $_));
- }
- "u != $uid";
- } @{$config{untrusted_committers}}).
- ") exit(0);\n";
-
- $ret.=<<"EOF";
- asprintf(&s, "CALLER_UID=%i", u);
- newenviron[i++]=s;
- }
- EOF
- return $ret;
- }
- sub test () {
- exit 0 if trusted();
-
- IkiWiki::lockwiki();
- IkiWiki::loadindex();
-
- # Dummy up a cgi environment to use when calling check_canedit
- # and friends.
- eval q{use CGI};
- error($@) if $@;
- my $cgi=CGI->new;
- $ENV{REMOTE_ADDR}='unknown' unless exists $ENV{REMOTE_ADDR};
- # And dummy up a session object.
- require IkiWiki::CGI;
- my $session=IkiWiki::cgi_getsession($cgi);
- $session->param("name", getuser());
- # Make sure whatever user was authed is in the
- # userinfo db.
- require IkiWiki::UserInfo;
- if (! IkiWiki::userinfo_get($session->param("name"), "regdate")) {
- IkiWiki::userinfo_setall($session->param("name"), {
- email => "",
- password => "",
- regdate => time,
- }) || error("failed adding user");
- }
-
- my %newfiles;
- foreach my $change (IkiWiki::rcs_receive()) {
- # This untaint is safe because we check file_pruned and
- # wiki_file_regexp.
- my ($file)=$change->{file}=~/$config{wiki_file_regexp}/;
- $file=IkiWiki::possibly_foolish_untaint($file);
- if (! defined $file || ! length $file ||
- IkiWiki::file_pruned($file, $config{srcdir})) {
- error(gettext("bad file name %s"), $file);
- }
- my $type=pagetype($file);
- my $page=pagename($file) if defined $type;
-
- if ($change->{action} eq 'add') {
- $newfiles{$file}=1;
- }
- if ($change->{action} eq 'change' ||
- $change->{action} eq 'add') {
- if (defined $page) {
- if (IkiWiki->can("check_canedit")) {
- IkiWiki::check_canedit($page, $cgi, $session);
- next;
- }
- }
- else {
- if (IkiWiki::Plugin::attachment->can("check_canattach")) {
- IkiWiki::Plugin::attachment::check_canattach($session, $file, $change->{path});
- next;
- }
- }
- }
- elsif ($change->{action} eq 'remove') {
- # check_canremove tests to see if the file is present
- # on disk. This will fail is a single commit adds a
- # file and then removes it again. Avoid the problem
- # by not testing the removal in such pairs of changes.
- # (The add is still tested, just to make sure that
- # no data is added to the repo that a web edit
- # could not add.)
- next if $newfiles{$file};
- if (IkiWiki::Plugin::remove->can("check_canremove")) {
- IkiWiki::Plugin::remove::check_canremove(defined $page ? $page : $file, $cgi, $session);
- next;
- }
- }
- else {
- error "unknown action ".$change->{action};
- }
-
- error sprintf(gettext("you are not allowed to change %s"), $file);
- }
- exit 0;
- }
- 1
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