4c5f00f879
Windows text editors such as Notepad tend to use CRLF line endings, which breaks gPXE's signature detection for script images. Since scripts are usually very small, they end up falling back to being detected as valid PXE executable images (since there are no signature checks for PXE executables). Executing text files as x86 machine code tends not to work well. Fix by allowing for any isspace() character to terminate the "#!gpxe" signature, and by ensuring that CR characters get stripped during command line parsing. Suggested-by: Shao Miller <Shao.Miller@yrdsb.edu.on.ca>
49 lines
1.1 KiB
C
49 lines
1.1 KiB
C
/*
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* Copyright (C) 2009 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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/**
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* @file
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*
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* Character types
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*
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*/
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#include <ctype.h>
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/**
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* Check to see if character is a space
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*
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* @v c Character
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* @ret isspace Character is a space
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*/
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int isspace ( int c ) {
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switch ( c ) {
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case ' ' :
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case '\f' :
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case '\n' :
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case '\r' :
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case '\t' :
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case '\v' :
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return 1;
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default:
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return 0;
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}
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}
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