X-Git-Url: https://sipb.mit.edu/gitweb.cgi/ikiwiki.git/blobdiff_plain/12422e98901cef2774b15ec0e6468e88d4d0a6c6..b78e139c50600f631991f8eac06815d6cf45cc35:/IkiWiki/Wrapper.pm

diff --git a/IkiWiki/Wrapper.pm b/IkiWiki/Wrapper.pm
index ee547cefb..4a98af622 100644
--- a/IkiWiki/Wrapper.pm
+++ b/IkiWiki/Wrapper.pm
@@ -46,17 +46,25 @@ EOF
 		asprintf(&newenviron[i++], "%s=%s", "REV", s);
 EOF
 	}
+	if ($config{rcs} eq "tla" && $config{notify}) {
+		$envsave.=<<"EOF"
+	if ((s=getenv("ARCH_VERSION")))
+		asprintf(&newenviron[i++], "%s=%s", "ARCH_VERSION", s);
+EOF
+	}
 	
 	$Data::Dumper::Indent=0; # no newlines
 	my $configstring=Data::Dumper->Dump([\%config], ['*config']);
 	$configstring=~s/\\/\\\\/g;
 	$configstring=~s/"/\\"/g;
+	$configstring=~s/\n/\\\n/g;
 	
 	open(OUT, ">$wrapper.c") || error("failed to write $wrapper.c: $!");;
 	print OUT <<"EOF";
 /* A wrapper for ikiwiki, can be safely made suid. */
 #define _GNU_SOURCE
 #include <stdio.h>
+#include <sys/types.h>
 #include <unistd.h>
 #include <stdlib.h>
 #include <string.h>
@@ -74,6 +82,11 @@ $envsave
 	newenviron[i]=NULL;
 	environ=newenviron;
 
+	if (setregid(getegid(), -1) != 0 || setreuid(geteuid(), -1) != 0) {
+		perror("failed to drop real uid/gid");
+		exit(1);
+	}
+
 	execl("$this", "$this", NULL);
 	perror("failed to run $this");
 	exit(1);