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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 20:34:10 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-10 20:34:10 +0000 |
commit | e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc (patch) | |
tree | 68cb5ef9081156392f1dd62a00c6ccc1451b93df /epan/dissectors/packet-sipfrag.c | |
parent | Initial commit. (diff) | |
download | wireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.tar.xz wireshark-e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc.zip |
Adding upstream version 4.2.2.upstream/4.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'epan/dissectors/packet-sipfrag.c')
-rw-r--r-- | epan/dissectors/packet-sipfrag.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/epan/dissectors/packet-sipfrag.c b/epan/dissectors/packet-sipfrag.c new file mode 100644 index 00000000..2e5f3918 --- /dev/null +++ b/epan/dissectors/packet-sipfrag.c @@ -0,0 +1,126 @@ +/* Routines for sipfrag packet disassembly (RFC 3420) + * + * Martin Mathieson + * Based on packet-sdp.c + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "config.h" + +#include <epan/packet.h> + +/* + * Doesn't do a detailed dissection of the lines of the message, just treat as text. + */ + +void proto_register_sipfrag(void); + +/* Initialize the protocol and registered fields. */ +static int proto_sipfrag = -1; +static int hf_sipfrag_line = -1; + +/* Protocol subtree. */ +static int ett_sipfrag = -1; + +void proto_reg_handoff_sipfrag(void); + +static dissector_handle_t sipfrag_handle; + +/* Main dissection function. */ +static int dissect_sipfrag(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) +{ + proto_tree *sipfrag_tree; + proto_item *ti; + gint offset = 0; + gint next_offset; + int linelen; + char *string; + gint lines = 0; + + /* Append this protocol name rather than replace. */ + col_append_str(pinfo->cinfo, COL_PROTOCOL, "/sipfrag"); + + /* Add mention of this protocol to info column */ + col_append_str(pinfo->cinfo, COL_INFO, ", with Sipfrag"); + + /* Create sipfrag tree. */ + ti = proto_tree_add_item(tree, proto_sipfrag, tvb, offset, -1, ENC_NA); + sipfrag_tree = proto_item_add_subtree(ti, ett_sipfrag); + + /* Show the sipfrag message a line at a time. */ + while (tvb_offset_exists(tvb, offset)) + { + /* Find the end of the line. */ + linelen = tvb_find_line_end_unquoted(tvb, offset, -1, &next_offset); + + /* For now, add all lines as unparsed strings */ + + /* Extract & add the string. */ + string = (char*)tvb_get_string_enc(pinfo->pool, tvb, offset, linelen, ENC_ASCII); + proto_tree_add_string_format(sipfrag_tree, hf_sipfrag_line, + tvb, offset, + linelen, string, + "%s", string); + lines++; + + /* Show first line in info column */ + if (lines == 1) { + col_append_fstr(pinfo->cinfo, COL_INFO, "(%s", string); + } + + /* Move onto next line. */ + offset = next_offset; + } + + /* Close off summary of sipfrag in info column */ + col_append_str(pinfo->cinfo, COL_INFO, (lines > 1) ? "...)" : ")"); + return tvb_captured_length(tvb); +} + +void proto_register_sipfrag(void) +{ + static hf_register_info hf[] = + { + { &hf_sipfrag_line, + { "Line", + "sipfrag.line",FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL + } + }, + }; + + static gint *ett[] = + { + &ett_sipfrag + }; + + /* Register protocol. */ + proto_sipfrag = proto_register_protocol("Sipfrag", "SIPFRAG", "sipfrag"); + proto_register_field_array(proto_sipfrag, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + + /* Allow other dissectors to find this one by name. */ + sipfrag_handle = register_dissector("sipfrag", dissect_sipfrag, proto_sipfrag); +} + +void proto_reg_handoff_sipfrag(void) +{ + dissector_add_string("media_type", "message/sipfrag", sipfrag_handle); +} + +/* + * Editor modelines - https://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: + */ |