the pre-receive wrapper needs to be suid after all

[ikiwiki.git] / IkiWiki / Receive.pm

diff --git a/IkiWiki/Receive.pm b/IkiWiki/Receive.pm
index 4d437cf78825c33e2b8680c0b458e530c66557fb..451a3fe8e50d98c155579321109e6084d25e657e 100644 (file)
--- a/IkiWiki/Receive.pm
+++ b/IkiWiki/Receive.pm
@@ -7,7 +7,8 @@ use strict;
 use IkiWiki;
 
 sub getuser () { #{{{
-       my $user=(getpwuid($<))[0];
+       # CALLER_UID is set by the suid wrapper, to the original uid
+       my $user=(getpwuid(exists $ENV{CALLER_UID} ? $ENV{CALLER_UID} : $<))[0];
        if (! defined $user) {
                error("cannot determine username for $<");
        }
@@ -22,32 +23,42 @@ sub trusted () { #{{{
 
 sub test () { #{{{
        exit 0 if trusted();
-       IkiWiki::rcs_test_receive();
+       
+       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;
-       require IkiWiki::CGI;
-       my $session=IkiWiki::cgi_getsession($cgi);
-       my $user=getuser();
-       $session->param("name", $user);
        $ENV{REMOTE_ADDR}='unknown' unless exists $ENV{REMOTE_ADDR};
 
-       lockwiki();
-       loadindex();
-
+       # 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}/;
-               $file=possibly_foolish_untaint($file);
+               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"));
+                       error(gettext("bad file name %s"), $file);
                }
 
                my $type=pagetype($file);
@@ -60,15 +71,15 @@ sub test () { #{{{
                if ($change->{action} eq 'change' ||
                    $change->{action} eq 'add') {
                        if (defined $page) {
-                               if (IkiWiki->can("check_canedit") &&
-                                   IkiWiki::check_canedit($page, $cgi, $session)) {
-                                       next;
+                               if (IkiWiki->can("check_canedit")) {
+                                       IkiWiki::check_canedit($page, $cgi, $session);
+                                       next;
                                }
                        }
                        else {
-                               if (IkiWiki::Plugin::attachment->can("check_canattach") &&
-                                   IkiWiki::Plugin::attachment::check_canattach($session, $file, $change->{path})) {
-                                       next;
+                               if (IkiWiki::Plugin::attachment->can("check_canattach")) {
+                                       IkiWiki::Plugin::attachment::check_canattach($session, $file, $change->{path});
+                                       next;
                                }
                        }
                }
@@ -82,15 +93,15 @@ sub test () { #{{{
                        # could add.)
                        next if $newfiles{$file};
 
-                       if (IkiWiki::Plugin::remove->can("check_canremove") &&
-                           IkiWiki::Plugin::remove::check_canremove(defined $page ? $page : $file, $cgi, $session)) {
+                       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);
        }