From 7027a83b4c98ddaf94c4621e0ee55020e17779e3 Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 2 Jun 2012 01:56:28 +0100
Subject: [PATCH 1/1] introduce checkexecflagfile

---
 helper.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/helper.c b/helper.c
index c3133eb..0841cd2 100644
--- a/helper.c
+++ b/helper.c
@@ -62,6 +62,11 @@ static void authorised(void) {
   else _exit(0);
 }
 
+static void checkexecflagfile(const char *file) {
+  if (!access(file,X_OK)) authorised();
+  if (errno != ENOENT) exiterrno(errno);
+}
+
 static void hex2bytes(const char *string, unsigned char *out, int len) {
   int i;
   for (i=0; i<len; i++) {
@@ -139,13 +144,11 @@ int main(int argc, const char *const *argv) {
 
   if (af == AF_INET) {
     snprintf(fnbuf,sizeof(fnbuf)-1,"byaddr/%s%s:%u",tophalfchar,np,hport);
-    if (!access(fnbuf,X_OK)) authorised();
-    if (errno != ENOENT) exiterrno(errno);
+    checkexecflagfile(fnbuf);
   }
 
   snprintf(fnbuf,sizeof(fnbuf)-1,"byaddr/%s%s,%u",tophalfchar,np,hport);
-  if (!access(fnbuf,X_OK)) authorised();
-  if (errno != ENOENT) exiterrno(errno);
+  checkexecflagfile(fnbuf);
 
   if (af == AF_INET6) {
     char sbuf[addrlen_any*3+1], *sp = sbuf;
@@ -159,8 +162,7 @@ int main(int argc, const char *const *argv) {
       sp += sprintf(sp,"%x",val);
     }
     snprintf(fnbuf,sizeof(fnbuf)-1,"byaddr/%s%s,%u",tophalfchar,sbuf,hport);
-    if (!access(fnbuf,X_OK)) authorised();
-    if (errno != ENOENT) exiterrno(errno);
+    checkexecflagfile(fnbuf);
   }
 
   uid= getuid(); if (uid==(uid_t)-1) perrorfail("getuid");
-- 
2.30.2