Free, close, and unlink files when failure happens

Author: AZero13

backend/ipp.c

@@ -1400,12 +1400,18 @@ main(int  argc,				/* I - Number of command-line args */
     if ((compatsize = write(fd, buffer, (size_t)bytes)) < 0)
     {
       perror("DEBUG: Unable to write temporary file");
+      if (tmpfilename[0])
+	unlink(tmpfilename);
       return (CUPS_BACKEND_FAILED);
     }
 
     if ((bytes = backendRunLoop(-1, fd, snmp_fd, &(addrlist->addr), 0, 0,
 		                backendNetworkSideCB)) < 0)
+    {
+      if (tmpfilename[0])
+	unlink(tmpfilename);
       return (CUPS_BACKEND_FAILED);
+    }
 
     compatsize += bytes;
 

backend/socket.c

@@ -313,6 +313,12 @@ main(int  argc,				/* I - Number of command-line arguments (6 or 7) */
 
 	sleep(5);
 
+	httpAddrFreeList(addrlist);
+	if (snmp_fd >= 0)
+	  _cupsSNMPClose(snmp_fd);
+	if (print_fd != 0)
+	  close(print_fd);
+
         return (CUPS_BACKEND_FAILED);
       }
 
@@ -324,6 +330,11 @@ main(int  argc,				/* I - Number of command-line arguments (6 or 7) */
 	{
 	  _cupsLangPrintFilter(stderr, "ERROR",
 	                       _("The printer is not responding."));
+	  httpAddrFreeList(addrlist);
+	  if (snmp_fd >= 0)
+	    _cupsSNMPClose(snmp_fd);
+	  if (print_fd != 0)
+	    close(print_fd);
 	  return (CUPS_BACKEND_FAILED);
 	}