(no commit message)

[ikiwiki.git] / IkiWiki / Wrapper.pm

diff --git a/IkiWiki/Wrapper.pm b/IkiWiki/Wrapper.pm
index cc2223d7a4ded0277c9e594b67841449cdd7bd50..c39aa2ef7d678207ef86c938baef3f7af1933c30 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});
@@ -29,6 +49,7 @@ sub gen_wrapper () {
        push @envsave, qw{REMOTE_ADDR QUERY_STRING REQUEST_METHOD REQUEST_URI
                       CONTENT_TYPE CONTENT_LENGTH GATEWAY_INTERFACE
                       HTTP_COOKIE REMOTE_USER HTTPS REDIRECT_STATUS
+                      HTTP_HOST SERVER_PORT HTTPS HTTP_ACCEPT
                       REDIRECT_URL} if $config{cgi};
        my $envsave="";
        foreach my $var (@envsave) {
@@ -37,24 +58,9 @@ sub gen_wrapper () {
                addenv("$var", s);
 EOF
        }
-
-       my $test_receive="";
-       if ($config{test_receive}) {
-               require IkiWiki::Receive;
-               $test_receive=IkiWiki::Receive::gen_wrapper();
-       }
-
-       my $check_cvs_add_dir="";
-       if ($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 @wrapper_hooks;
+       run_hooks(genwrapper => sub { push @wrapper_hooks, shift->() });
 
        my $check_commit_hook="";
        my $pre_exec="";
@@ -88,17 +94,23 @@ 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 && lockf(lockfd, F_LOCK, 0) == 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;
@@ -117,10 +129,10 @@ EOF
 #include <sys/file.h>
 
 extern char **environ;
-char *newenviron[$#envsave+6];
+char *newenviron[$#envsave+7];
 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");
@@ -129,16 +141,28 @@ addenv(char *var, char *val) {
 }
 
 int main (int argc, char **argv) {
+       int lockfd=-1;
        char *s;
 
-$check_cvs_add_dir
 $check_commit_hook
-$test_receive
+@wrapper_hooks
 $envsave
        newenviron[i++]="HOME=$ENV{HOME}";
+       newenviron[i++]="PATH=$ENV{PATH}";
        newenviron[i++]="WRAPPED_OPTIONS=$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) {
@@ -152,15 +176,46 @@ $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
-       close OUT;
 
-       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"));
        }
@@ -182,8 +237,7 @@ EOF
                error("rename $wrapper.new $wrapper: $!");
        }
        #translators: The parameter is a filename.
-       printf(gettext("successfully generated %s"), $wrapper);
-       print "\n";
+       debug(sprintf(gettext("successfully generated %s"), $wrapper));
 }
 
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