#!/usr/bin/perl
-
package IkiWiki::Receive;
use warnings;
use strict;
use IkiWiki;
-sub getuser () { #{{{
- # CALLER_UID is set by the suid wrapper, to the original uid
+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 () { #{{{
+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();
+ /* 3 characters per byte is certainly enough */
+ char uid_string[sizeof(u) * 3 + 1];
+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}}).
+ ") {\n";
-sub test () { #{{{
- exit 0 if trusted();
+ $ret.=<<"EOF";
+ /* Trusted user.
+ * Consume all stdin before exiting, as git may
+ * otherwise be unhappy. */
+ char buf[256];
+ while (read(0, &buf, 256) != 0) {}
+ exit(0);
+ }
+ snprintf(uid_string, sizeof(uid_string), "%i", u);
+ addenv("CALLER_UID", uid_string);
+ }
+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;
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 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);
- }
+ IkiWiki::check_canchange(
+ cgi => $cgi,
+ session => $session,
+ changes => [IkiWiki::rcs_receive()]
+ );
exit 0;
-} #}}}
+}
1