The string to match might not be "New directory" exactly, so match that

[ikiwiki.git] / IkiWiki / Wrapper.pm

diff --git a/IkiWiki/Wrapper.pm b/IkiWiki/Wrapper.pm
index 99237d3b5c5b46b6b5afb85436938b1cbbd329c4..87c2ffc89f0e9543c6ed8d095a8a7ae73921ab05 100644 (file)
--- a/IkiWiki/Wrapper.pm
+++ b/IkiWiki/Wrapper.pm
@@ -8,7 +8,7 @@ use File::Spec;
 use Data::Dumper;
 use IkiWiki;
 
-sub gen_wrapper () { #{{{
+sub gen_wrapper () {
        $config{srcdir}=File::Spec->rel2abs($config{srcdir});
        $config{destdir}=File::Spec->rel2abs($config{destdir});
        my $this=File::Spec->rel2abs($0);
@@ -28,7 +28,8 @@ sub gen_wrapper () { #{{{
        my @envsave;
        push @envsave, qw{REMOTE_ADDR QUERY_STRING REQUEST_METHOD REQUEST_URI
                       CONTENT_TYPE CONTENT_LENGTH GATEWAY_INTERFACE
-                      HTTP_COOKIE REMOTE_USER HTTPS} if $config{cgi};
+                      HTTP_COOKIE REMOTE_USER HTTPS REDIRECT_STATUS
+                      REDIRECT_URL} if $config{cgi};
        my $envsave="";
        foreach my $var (@envsave) {
                $envsave.=<<"EOF";
@@ -43,7 +44,19 @@ EOF
                $test_receive=IkiWiki::Receive::gen_wrapper();
        }
 
+       my $check_cvs_add_dir="";
+       # XXX conditionalize on $config{rcs} eq 'cvs'
+       $check_cvs_add_dir=<<"EOF";
+       {
+               int j;
+               for (j = 1; j < argc; j++)
+                       if (strstr(argv[j], "New directory") != NULL)
+                               exit(0);
+       }
+EOF
+
        my $check_commit_hook="";
+       my $pre_exec="";
        if ($config{post_commit}) {
                # Optimise checking !commit_hook_enabled() , 
                # so that ikiwiki does not have to be started if the
@@ -58,7 +71,7 @@ EOF
                # the benefit of this optimisation.
                $check_commit_hook=<<"EOF";
        {
-               int fd=open("$config{wikistatedir}/commitlock", O_CREAT | O_RDWR);
+               int fd=open("$config{wikistatedir}/commitlock", O_CREAT | O_RDWR, 0666);
                if (fd != -1) {
                        if (flock(fd, LOCK_SH | LOCK_NB) != 0)
                                exit(0);
@@ -67,6 +80,23 @@ EOF
        }
 EOF
        }
+       elsif ($config{cgi}) {
+               # Avoid more than one ikiwiki cgi running at a time by
+               # taking a cgi lock. Since ikiwiki uses several MB of
+               # memory, a pile up of processes could cause thrashing
+               # otherwise. The fd of the lock is stored in
+               # IKIWIKI_CGILOCK_FD so unlockwiki can close it.
+               $pre_exec=<<"EOF";
+       {
+               int fd=open("$config{wikistatedir}/cgilock", O_CREAT | O_RDWR, 0666);
+               if (fd != -1 && flock(fd, LOCK_EX) == 0) {
+                       char *fd_s;
+                       asprintf(&fd_s, "%i", fd);
+                       setenv("IKIWIKI_CGILOCK_FD", fd_s, 1);
+               }
+       }
+EOF
+       }
 
        $Data::Dumper::Indent=0; # no newlines
        my $configstring=Data::Dumper->Dump([\%config], ['*config']);
@@ -74,10 +104,7 @@ EOF
        $configstring=~s/"/\\"/g;
        $configstring=~s/\n/\\n/g;
        
-       #translators: The first parameter is a filename, and the second is
-       #translators: a (probably not translated) error message.
-       open(OUT, ">$wrapper.c") || error(sprintf(gettext("failed to write %s: %s"), "$wrapper.c", $!));;
-       print OUT <<"EOF";
+       writefile(basename("$wrapper.c"), dirname($wrapper), <<"EOF");
 /* A wrapper for ikiwiki, can be safely made suid. */
 #include <stdio.h>
 #include <sys/types.h>
@@ -103,6 +130,7 @@ addenv(char *var, char *val) {
 int main (int argc, char **argv) {
        char *s;
 
+$check_cvs_add_dir
 $check_commit_hook
 $test_receive
 $envsave
@@ -122,6 +150,7 @@ $envsave
                exit(1);
        }
 
+$pre_exec
        execl("$this", "$this", NULL);
        perror("exec $this");
        exit(1);
@@ -154,6 +183,6 @@ EOF
        #translators: The parameter is a filename.
        printf(gettext("successfully generated %s"), $wrapper);
        print "\n";
-} #}}}
+}
 
 1