11 sub gen_wrapper () { #{{{
12 $config{srcdir}=abs_path($config{srcdir});
13 $config{destdir}=abs_path($config{destdir});
14 my $this=abs_path($0);
16 error(sprintf(gettext("%s doesn't seem to be executable"), $this));
20 error(gettext("cannot create a wrapper that uses a setup file"));
22 my $wrapper=possibly_foolish_untaint($config{wrapper});
23 if (! defined $wrapper || ! length $wrapper) {
24 error(gettext("wrapper filename not specified"));
26 delete $config{wrapper};
29 push @envsave, qw{REMOTE_ADDR QUERY_STRING REQUEST_METHOD REQUEST_URI
30 CONTENT_TYPE CONTENT_LENGTH GATEWAY_INTERFACE
31 HTTP_COOKIE REMOTE_USER} if $config{cgi};
33 foreach my $var (@envsave) {
35 if ((s=getenv("$var")))
36 asprintf(&newenviron[i++], "%s=%s", "$var", s);
39 if ($config{rcs} eq "svn" && $config{notify}) {
40 # Support running directly as hooks/post-commit by passing
41 # $2 in REV in the environment.
44 asprintf(&newenviron[i++], "REV=%s", argv[2]);
45 else if ((s=getenv("REV")))
46 asprintf(&newenviron[i++], "%s=%s", "REV", s);
49 if ($config{rcs} eq "tla" && $config{notify}) {
51 if ((s=getenv("ARCH_VERSION")))
52 asprintf(&newenviron[i++], "%s=%s", "ARCH_VERSION", s);
56 $Data::Dumper::Indent=0; # no newlines
57 my $configstring=Data::Dumper->Dump([\%config], ['*config']);
58 $configstring=~s/\\/\\\\/g;
59 $configstring=~s/"/\\"/g;
60 $configstring=~s/\n/\\\n/g;
62 #translators: The first parameter is a filename, and the second is
63 #translators: a (probably not translated) error message.
64 open(OUT, ">$wrapper.c") || error(sprintf(gettext("failed to write %s: %s"), "$wrapper.c", $!));;
66 /* A wrapper for ikiwiki, can be safely made suid. */
69 #include <sys/types.h>
74 extern char **environ;
76 int main (int argc, char **argv) {
77 /* Sanitize environment. */
79 char *newenviron[$#envsave+5];
82 newenviron[i++]="HOME=$ENV{HOME}";
83 newenviron[i++]="WRAPPED_OPTIONS=$configstring";
87 if (setregid(getegid(), -1) != 0 || setreuid(geteuid(), -1) != 0) {
88 perror("failed to drop real uid/gid");
92 execl("$this", "$this", NULL);
93 perror("failed to run $this");
98 if (system("gcc", "$wrapper.c", "-o", $wrapper) != 0) {
99 #translators: The parameter is a C filename.
100 error(sprintf(gettext("failed to compile %s"), "$wrapper.c"));
102 unlink("$wrapper.c");
103 if (defined $config{wrappermode} &&
104 ! chmod(oct($config{wrappermode}), $wrapper)) {
105 error("chmod $wrapper: $!");
107 #translators: The parameter is a filename.
108 printf(gettext("successfully generated %s"), $wrapper)."\n";