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/* ruby_marshal.c
*
* Routines for reading a binary file containing a ruby marshal object
*
* Copyright 2018, Dario Lombardo <lomato@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <string.h>
#include "wtap-int.h"
#include "file_wrappers.h"
#include "ruby_marshal.h"
static gboolean is_ruby_marshal(const guint8* filebuf)
{
if (filebuf[0] != RUBY_MARSHAL_MAJOR)
return FALSE;
if (filebuf[1] != RUBY_MARSHAL_MINOR)
return FALSE;
switch (filebuf[2]) {
case '0':
case 'T':
case 'F':
case 'i':
case ':':
case '"':
case 'I':
case '[':
case '{':
case 'f':
case 'c':
case 'm':
case 'S':
case '/':
case 'o':
case 'C':
case 'e':
case ';':
case '@':
return TRUE;
break;
default:
return FALSE;
}
}
wtap_open_return_val ruby_marshal_open(wtap *wth, int *err, gchar **err_info)
{
/* The size of this buffer should match the expectations of is_ruby_marshal */
guint8 filebuf[3];
int bytes_read;
bytes_read = file_read(filebuf, sizeof(filebuf), wth->fh);
if (bytes_read < 0) {
/* Read error. */
*err = file_error(wth->fh, err_info);
return WTAP_OPEN_ERROR;
}
if (bytes_read != sizeof(filebuf) || !is_ruby_marshal(filebuf)) {
return WTAP_OPEN_NOT_MINE;
}
if (file_seek(wth->fh, 0, SEEK_SET, err) == -1) {
return WTAP_OPEN_ERROR;
}
wth->file_type_subtype = WTAP_FILE_TYPE_SUBTYPE_RUBY_MARSHAL;
wth->file_encap = WTAP_ENCAP_RUBY_MARSHAL;
wth->file_tsprec = WTAP_TSPREC_SEC;
wth->subtype_read = wtap_full_file_read;
wth->subtype_seek_read = wtap_full_file_seek_read;
wth->snapshot_length = 0;
return WTAP_OPEN_MINE;
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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