diff options
Diffstat (limited to 'nuttx/binfmt/libnxflat/libnxflat_verify.c')
-rw-r--r-- | nuttx/binfmt/libnxflat/libnxflat_verify.c | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/nuttx/binfmt/libnxflat/libnxflat_verify.c b/nuttx/binfmt/libnxflat/libnxflat_verify.c new file mode 100644 index 000000000..de952774f --- /dev/null +++ b/nuttx/binfmt/libnxflat/libnxflat_verify.c @@ -0,0 +1,100 @@ +/**************************************************************************** + * binfmt/libnxflat/nxflat_verify.c + * + * Copyright (C) 2009 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <string.h> +#include <debug.h> +#include <errno.h> +#include <arpa/inet.h> +#include <nuttx/nxflat.h> + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Constant Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nxflat_verifyheader + * + * Description: + * Given the header from a possible NXFLAT executable, verify that it + * is an NXFLAT executable. + * + * Returned Value: + * 0 (OK) is returned on success and a negated errno is returned on + * failure. + * + ****************************************************************************/ + +int nxflat_verifyheader(const struct nxflat_hdr_s *header) +{ + if (!header) + { + bdbg("NULL NXFLAT header!"); + return -ENOEXEC; + } + + /* Check the FLT header -- magic number and revision. + * + * If the magic number does not match. Just return + * silently. This is not our binary. + */ + + if (strncmp(header->h_magic, NXFLAT_MAGIC, 4) != 0) + { + bdbg("Unrecognized magic=\"%c%c%c%c\"\n", + header->h_magic[0], header->h_magic[1], + header->h_magic[2], header->h_magic[3]); + return -ENOEXEC; + } + return OK; +} + |