forked from osmocom/wireshark
124 lines
3.0 KiB
C
124 lines
3.0 KiB
C
/* ruby_marshal.c
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*
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* Routines for reading a binary file containing a ruby marshal object
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*
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* Copyright 2018, Dario Lombardo <lomato@gmail.com>
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <string.h>
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#include "wtap-int.h"
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#include "file_wrappers.h"
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#include "ruby_marshal.h"
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static int ruby_marshal_file_type_subtype = -1;
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void register_ruby_marshal(void);
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static gboolean is_ruby_marshal(const guint8* filebuf)
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{
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if (filebuf[0] != RUBY_MARSHAL_MAJOR)
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return FALSE;
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if (filebuf[1] != RUBY_MARSHAL_MINOR)
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return FALSE;
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switch (filebuf[2]) {
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case '0':
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case 'T':
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case 'F':
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case 'i':
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case ':':
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case '"':
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case 'I':
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case '[':
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case '{':
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case 'f':
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case 'c':
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case 'm':
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case 'S':
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case '/':
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case 'o':
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case 'C':
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case 'e':
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case ';':
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case '@':
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return TRUE;
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break;
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default:
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return FALSE;
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}
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}
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wtap_open_return_val ruby_marshal_open(wtap *wth, int *err, gchar **err_info)
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{
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/* The size of this buffer should match the expectations of is_ruby_marshal */
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guint8 filebuf[3];
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int bytes_read;
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bytes_read = file_read(filebuf, sizeof(filebuf), wth->fh);
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if (bytes_read < 0) {
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/* Read error. */
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*err = file_error(wth->fh, err_info);
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return WTAP_OPEN_ERROR;
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}
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if (bytes_read != sizeof(filebuf) || !is_ruby_marshal(filebuf)) {
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return WTAP_OPEN_NOT_MINE;
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}
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if (file_seek(wth->fh, 0, SEEK_SET, err) == -1) {
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return WTAP_OPEN_ERROR;
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}
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wth->file_type_subtype = ruby_marshal_file_type_subtype;
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wth->file_encap = WTAP_ENCAP_RUBY_MARSHAL;
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wth->file_tsprec = WTAP_TSPREC_SEC;
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wth->subtype_read = wtap_full_file_read;
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wth->subtype_seek_read = wtap_full_file_seek_read;
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wth->snapshot_length = 0;
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return WTAP_OPEN_MINE;
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}
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static const struct supported_block_type ruby_marshal_blocks_supported[] = {
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/*
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* We support packet blocks, with no comments or other options.
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*/
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{ WTAP_BLOCK_PACKET, MULTIPLE_BLOCKS_SUPPORTED, NO_OPTIONS_SUPPORTED }
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};
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static const struct file_type_subtype_info ruby_marshal_info = {
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"Ruby marshal files", "ruby_marshal", NULL, NULL,
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FALSE, BLOCKS_SUPPORTED(ruby_marshal_blocks_supported),
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NULL, NULL, NULL
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};
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void register_ruby_marshal(void)
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{
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ruby_marshal_file_type_subtype = wtap_register_file_type_subtype(&ruby_marshal_info);
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/*
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* Register name for backwards compatibility with the
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* wtap_filetypes table in Lua.
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*/
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wtap_register_backwards_compatibility_lua_name("RUBY_MARSHAL",
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ruby_marshal_file_type_subtype);
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}
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/*
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* Editor modelines - https://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* vi: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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