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/*
* wslua_proto_expert.c
*
* Wireshark's interface to the Lua Programming Language
*
* (c) 2006, Luis E. Garcia Ontanon <luis@ontanon.org>
* (c) 2008, Balint Reczey <balint.reczey@ericsson.com>
* (c) 2011, Stig Bjorlykke <stig@bjorlykke.org>
* (c) 2014, Hadriel Kaplan <hadrielk@yahoo.com>
*
* 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 "wslua.h"
/* WSLUA_CONTINUE_MODULE Proto */
WSLUA_CLASS_DEFINE(ProtoExpert,FAIL_ON_NULL("null ProtoExpert"));
/* A Protocol expert info field, to be used when adding items to the dissection tree.
@since 1.11.3
*/
WSLUA_CONSTRUCTOR ProtoExpert_new(lua_State* L) {
/* Creates a new `ProtoExpert` object to be used for a protocol's expert information notices.
@since 1.11.3
*/
#define WSLUA_ARG_ProtoExpert_new_ABBR 1 /* Filter name of the expert info field (the string that
is used in filters). */
#define WSLUA_ARG_ProtoExpert_new_TEXT 2 /* The default text of the expert field. */
#define WSLUA_ARG_ProtoExpert_new_GROUP 3 /* Expert group type: one of: `expert.group.CHECKSUM`,
`expert.group.SEQUENCE`, `expert.group.RESPONSE_CODE`,
`expert.group.REQUEST_CODE`, `expert.group.UNDECODED`,
`expert.group.REASSEMBLE`, `expert.group.MALFORMED`,
`expert.group.DEBUG`, `expert.group.PROTOCOL`,
`expert.group.SECURITY`, `expert.group.COMMENTS_GROUP`,
`expert.group.DECRYPTION`, `expert.group.ASSUMPTION`
or `expert.group.DEPRECATED`. */
#define WSLUA_ARG_ProtoExpert_new_SEVERITY 4 /* Expert severity type: one of:
`expert.severity.COMMENT`, `expert.severity.CHAT`,
`expert.severity.NOTE`, `expert.severity.WARN`,
or `expert.severity.ERROR`. */
ProtoExpert pe = NULL;
const gchar* abbr = wslua_checkstring_only(L,WSLUA_ARG_ProtoExpert_new_ABBR);
const gchar* text = wslua_checkstring_only(L,WSLUA_ARG_ProtoExpert_new_TEXT);
int group = (int)luaL_checkinteger(L, WSLUA_ARG_ProtoExpert_new_GROUP);
int severity = (int)luaL_checkinteger(L, WSLUA_ARG_ProtoExpert_new_SEVERITY);
if (!abbr[0]) {
luaL_argerror(L, WSLUA_ARG_ProtoExpert_new_ABBR, "Empty field name abbrev");
return 0;
}
if (proto_check_field_name(abbr)) {
luaL_argerror(L, WSLUA_ARG_ProtoExpert_new_ABBR, "Invalid char in abbrev");
return 0;
}
if (proto_registrar_get_byname(abbr)) {
luaL_argerror(L, WSLUA_ARG_ProtoExpert_new_ABBR, "This abbrev already exists");
return 0;
}
if (!text[0]) {
luaL_argerror(L, WSLUA_ARG_ProtoExpert_new_TEXT, "Empty text");
return 0;
}
switch (group) {
case PI_CHECKSUM:
case PI_SEQUENCE:
case PI_RESPONSE_CODE:
case PI_REQUEST_CODE:
case PI_UNDECODED:
case PI_REASSEMBLE:
case PI_MALFORMED:
case PI_DEBUG:
case PI_PROTOCOL:
case PI_SECURITY:
case PI_COMMENTS_GROUP:
case PI_DECRYPTION:
case PI_ASSUMPTION:
case PI_DEPRECATED:
break;
default:
luaL_argerror(L, WSLUA_ARG_ProtoExpert_new_GROUP, "Group must be one of expert.group.*");
return 0;
}
switch (severity) {
case PI_COMMENT:
case PI_CHAT:
case PI_NOTE:
case PI_WARN:
case PI_ERROR:
break;
default:
luaL_argerror(L, WSLUA_ARG_ProtoExpert_new_SEVERITY, "Severity must be one of expert.severity.*");
return 0;
}
pe = g_new(wslua_expert_field_t,1);
pe->ids.ei = EI_INIT_EI;
pe->ids.hf = -2;
pe->abbrev = g_strdup(abbr);
pe->text = g_strdup(text);
pe->group = group;
pe->severity = severity;
pushProtoExpert(L,pe);
WSLUA_RETURN(1); /* The newly created `ProtoExpert` object. */
}
WSLUA_METAMETHOD ProtoExpert__tostring(lua_State* L) {
/* Returns a string with debugging information about a `ProtoExpert` object.
@since 1.11.3
*/
ProtoExpert pe = toProtoExpert(L,1);
if (!pe) {
lua_pushstring(L,"ProtoExpert pointer is NULL!");
} else {
lua_pushfstring(L, "ProtoExpert: ei=%d, hf=%d, abbr=%s, text=%s, group=%d, severity=%d",
pe->ids.ei, pe->ids.hf, pe->abbrev, pe->text, pe->group, pe->severity);
}
return 1;
}
static int ProtoExpert__gc(lua_State* L) {
ProtoExpert pe = toProtoExpert(L,1);
/*
* Initialized to -2 in ProtoExpert_new,
* changed to -1 in Proto_commit and subsequently replaced by
* an allocated number in proto_register_field_array.
* Reset to -2 again in wslua_deregister_protocols.
*/
if (pe->ids.hf != -2) {
/* Only free unregistered and deregistered ProtoExpert */
return 0;
}
g_free((gchar *)pe->abbrev);
g_free((gchar *)pe->text);
g_free(pe);
return 0;
}
WSLUA_METHODS ProtoExpert_methods[] = {
WSLUA_CLASS_FNREG(ProtoExpert,new),
{ NULL, NULL }
};
WSLUA_META ProtoExpert_meta[] = {
WSLUA_CLASS_MTREG(ProtoExpert,tostring),
{ NULL, NULL }
};
int ProtoExpert_register(lua_State* L) {
WSLUA_REGISTER_CLASS(ProtoExpert);
return 0;
}
/*
* 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:
*/
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