resubmitted patch to po4a upstream

[git.ikiwiki.info.git] / IkiWiki / Wrapper.pm

diff --git a/IkiWiki/Wrapper.pm b/IkiWiki/Wrapper.pm
index 57896e262fbef9cd08b74dc76ef0a26a9cb7ffdb..927368fae964d678ab04aa866154b61677f80176 100644 (file)
--- a/IkiWiki/Wrapper.pm
+++ b/IkiWiki/Wrapper.pm
@@ -8,6 +8,26 @@ use File::Spec;
 use Data::Dumper;
 use IkiWiki;
 
+sub gen_wrappers () {
+       debug(gettext("generating wrappers.."));
+       my %origconfig=(%config);
+       foreach my $wrapper (@{$config{wrappers}}) {
+               %config=(%origconfig, %{$wrapper});
+               $config{verbose}=$config{setupverbose}
+                       if exists $config{setupverbose};
+               $config{syslog}=$config{setupsyslog}
+                       if exists $config{setupsyslog};
+               delete @config{qw(setupsyslog setupverbose wrappers genwrappers rebuild)};
+               checkconfig();
+               if (! $config{cgi} && ! $config{post_commit} &&
+                   ! $config{test_receive}) {
+                       $config{post_commit}=1;
+               }
+               gen_wrapper();
+       }
+       %config=(%origconfig);
+}
+
 sub gen_wrapper () {
        $config{srcdir}=File::Spec->rel2abs($config{srcdir});
        $config{destdir}=File::Spec->rel2abs($config{destdir});
@@ -37,17 +57,10 @@ sub gen_wrapper () {
                addenv("$var", s);
 EOF
        }
-
-       if ($config{test_receive}) {
-               require IkiWiki::Receive;
-       }
        
        my @wrapper_hooks;
        run_hooks(genwrapper => sub { push @wrapper_hooks, shift->() });
 
-       my $check_args="        return 0;";
-       run_hooks(wrapperargcheck => sub { $check_args = shift->(); });
-
        my $check_commit_hook="";
        my $pre_exec="";
        if ($config{post_commit}) {
@@ -80,17 +93,23 @@ EOF
                # 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);
-               }
+       lockfd=open("$config{wikistatedir}/cgilock", O_CREAT | O_RDWR, 0666);
+       if (lockfd != -1 && flock(lockfd, LOCK_EX) == 0) {
+               char *fd_s=malloc(8);
+               sprintf(fd_s, "%i", lockfd);
+               setenv("IKIWIKI_CGILOCK_FD", fd_s, 1);
        }
 EOF
        }
 
+       my $set_background_command='';
+       if (defined $config{wrapper_background_command} &&
+           length $config{wrapper_background_command}) {
+               my $background_command=delete $config{wrapper_background_command};
+               $set_background_command=~s/"/\\"/g;
+               $set_background_command='#define BACKGROUND_COMMAND "'.$background_command.'"';
+       }
+
        $Data::Dumper::Indent=0; # no newlines
        my $configstring=Data::Dumper->Dump([\%config], ['*config']);
        $configstring=~s/\\/\\\\/g;
@@ -112,7 +131,7 @@ extern char **environ;
 char *newenviron[$#envsave+6];
 int i=0;
 
-addenv(char *var, char *val) {
+void addenv(char *var, char *val) {
        char *s=malloc(strlen(var)+1+strlen(val)+1);
        if (!s)
                perror("malloc");
@@ -120,23 +139,28 @@ addenv(char *var, char *val) {
        newenviron[i++]=s;
 }
 
-int checkargs(int argc, char **argv) {
-$check_args
-}
-
 int main (int argc, char **argv) {
+       int lockfd=-1;
        char *s;
 
-       if (!checkargs(argc, argv))
-               exit(0);
-
 $check_commit_hook
 @wrapper_hooks
 $envsave
        newenviron[i++]="HOME=$ENV{HOME}";
        newenviron[i++]="WRAPPED_OPTIONS=$configstring";
+
+#ifdef __TINYC__
+       /* old tcc versions do not support modifying environ directly */
+       if (clearenv() != 0) {
+               perror("clearenv");
+               exit(1);
+       }
+       for (; i>0; i--)
+               putenv(newenviron[i-1]);
+#else
        newenviron[i]=NULL;
        environ=newenviron;
+#endif
 
        if (setregid(getegid(), -1) != 0 &&
            setregid(getegid(), -1) != 0) {
@@ -150,14 +174,46 @@ $envsave
        }
 
 $pre_exec
+
+$set_background_command
+#ifdef BACKGROUND_COMMAND
+       if (lockfd != -1) {
+               close(lockfd);
+       }
+
+       pid_t pid=fork();
+       if (pid == -1) {
+               perror("fork");
+               exit(1);
+       }
+       else if (pid == 0) {
+               execl("$this", "$this", NULL);
+               perror("exec $this");
+               exit(1);                
+       }
+       else {
+               waitpid(pid, NULL, 0);
+
+               if (daemon(1, 0) == 0) {
+                       system(BACKGROUND_COMMAND);
+                       exit(0);
+               }
+               else {
+                       perror("daemon");
+                       exit(1);
+               }
+       }
+#else
        execl("$this", "$this", NULL);
        perror("exec $this");
        exit(1);
+#endif
 }
 EOF
 
-       my $cc=exists $ENV{CC} ? possibly_foolish_untaint($ENV{CC}) : 'cc';
-       if (system($cc, "$wrapper.c", "-o", "$wrapper.new") != 0) {
+       my @cc=exists $ENV{CC} ? possibly_foolish_untaint($ENV{CC}) : 'cc';
+       push @cc, possibly_foolish_untaint($ENV{CFLAGS}) if exists $ENV{CFLAGS};
+       if (system(@cc, "$wrapper.c", "-o", "$wrapper.new") != 0) {
                #translators: The parameter is a C filename.
                error(sprintf(gettext("failed to compile %s"), "$wrapper.c"));
        }