diff options
Diffstat (limited to 'nuttx/binfmt/libnxflat/libnxflat_verify.c')
-rw-r--r-- | nuttx/binfmt/libnxflat/libnxflat_verify.c | 116 |
1 files changed, 116 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..b31994b8b --- /dev/null +++ b/nuttx/binfmt/libnxflat/libnxflat_verify.c @@ -0,0 +1,116 @@ +/**************************************************************************** + * nxflat/lib/nxflat_stack.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 <sys/types.h> +#include <string.h> +#include <debug.h> +#include <errno.h> +#include <arpa/inet.h> +#include <nuttx/nxflat.h> + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +#define V_MAP (load_info->vtbl->map) +#define V_UNMAP (load_info->vtbl->unmap) +#define V_ALLOC (load_info->vtbl->alloc) +#define V_FREE (load_info->vtbl->free) +#define V_OPEN (load_info->vtbl->open) +#define V_READ (load_info->vtbl->read) +#define V_CLOSE (load_info->vtbl->close) + +#define XFLT_HDR_SIZE sizeof(struct nxflat_hdr_s) + +#ifndef MAX +# define MAX(x,y) ((x) > (y) ? (x) : (y)) +#endif + +/**************************************************************************** + * Private Constant Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nxflat_verifyheader + ****************************************************************************/ + +int nxflat_verifyheader(const struct nxflat_hdr_s *header) +{ + uint16 revision; + + if (!header) + { + dbg("NULL NXFLAT header!"); + return -ENOEXEC; + } + + /* Check the FLT header -- magic number and revision. + * + * If the the magic number does not match. Just return + * silently. This is not our binary. + */ + + if (strncmp(header->h_magic, "NXFLAT", 4) != 0) + { + dbg("Unrecognized magic=\"%c%c%c%c\"", + header->h_magic[0], header->h_magic[1], + header->h_magic[2], header->h_magic[3]); + return -ENOEXEC; + } + + /* Complain a little more if the version does not match. */ + + revision = ntohs(header->h_rev); + if (revision != NXFLAT_VERSION_CURRENT) + { + dbg("Unsupported NXFLAT version=%d\n", revision); + return -ENOEXEC; + } + return 0; +} + |