diff options
Diffstat (limited to 'epan/dissectors/packet-mime-encap.c')
| -rw-r--r-- | epan/dissectors/packet-mime-encap.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/epan/dissectors/packet-mime-encap.c b/epan/dissectors/packet-mime-encap.c new file mode 100644 index 0000000000..7880a7b95f --- /dev/null +++ b/epan/dissectors/packet-mime-encap.c @@ -0,0 +1,111 @@ +/* packet-mime-encap.c + * + * $Id$ + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <stdlib.h> +#include <string.h> +#include <glib.h> +#include <epan/packet.h> +#include <epan/expert.h> +#include <epan/prefs.h> +#include <epan/uat.h> +#include <epan/emem.h> + +static int proto_mime_encap = -1; + +static heur_dissector_list_t heur_subdissector_list; +static dissector_handle_t data_handle; + +/* XXX, orginal version was using composite tvb, sorry I can't force it to work */ +static GString *whole_file; + +static void +mime_encap_init(void) +{ + if (whole_file) { + g_string_free(whole_file, TRUE); + whole_file = NULL; + } +} + +static void +dissect_mime_encap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + proto_item* item; + guint len; + + item = proto_tree_add_item(tree, proto_mime_encap, tvb, 0, -1, FALSE); + + /* frames with nsec >= 1000000000 means errors :) */ + if (pinfo->fd->abs_ts.nsecs >= 1000000000) { + proto_item_append_text(item, " (Error)"); + /* return; */ /* dissect what we have */ + } + + if (!whole_file) + whole_file = g_string_new(""); + + /* eof? */ + if (!(len = tvb_length(tvb))) { + tvbuff_t *comp_tvb; + + proto_item_append_text(item, " (Final)"); + + comp_tvb = tvb_new_child_real_data(tvb, whole_file->str, whole_file->len, whole_file->len); + add_new_data_source(pinfo, comp_tvb, "Whole file"); + + if (!dissector_try_heuristic(heur_subdissector_list, comp_tvb, pinfo, tree)) { + proto_item_append_text(item, " (Unhandled)"); + call_dissector(data_handle, comp_tvb, pinfo, tree); + } + } else { + if (!pinfo->fd->flags.visited) { + g_string_set_size(whole_file, pinfo->fd->file_off + len); + tvb_memcpy(tvb, whole_file->str + pinfo->fd->file_off, 0, len); + } + } +} + +void +proto_register_mime_encap(void) +{ + proto_mime_encap = proto_register_protocol("MIME file", "MIME_FILE", "mime_dlt"); + + register_dissector("mime_dlt", dissect_mime_encap, proto_mime_encap); + register_init_routine(mime_encap_init); + register_heur_dissector_list("wtap_file", &heur_subdissector_list); +} + +void +proto_reg_handoff_mime_encap(void) +{ + dissector_handle_t mime_encap_handle; + + data_handle = find_dissector("data"); + mime_encap_handle = find_dissector("mime_dlt"); + dissector_add_uint("wtap_encap", WTAP_ENCAP_MIME, mime_encap_handle); +} + |