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%include {
/* dtd_parser.lemon
* XML dissector for wireshark
* XML's DTD grammar
*
* Copyright 2005, Luis E. Garcia Ontanon <luis@ontanon.org>
*
* 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 <stdio.h>
#include <glib.h>
#include <assert.h>
#include <ws_diag_control.h>
#include "dtd.h"
#include "dtd_parse.h"
static dtd_named_list_t* dtd_named_list_new(gchar* name, GPtrArray* list) {
dtd_named_list_t* nl = g_new(dtd_named_list_t,1);
nl->name = name;
nl->list = list;
return nl;
}
static GPtrArray* g_ptr_array_join(GPtrArray* a, GPtrArray* b){
while(b->len > 0) {
g_ptr_array_add(a,g_ptr_array_remove_index_fast(b,0));
}
g_ptr_array_free(b,TRUE);
return a;
}
DIAG_OFF_LEMON()
} /* end of %include */
%code {
DIAG_ON_LEMON()
}
%name DtdParse
%extra_argument { dtd_build_data_t *bd }
%token_destructor {
(void) bd; /* Mark unused, similar to Q_UNUSED */
if ($$) {
g_free($$->text);
g_free($$->location);
g_free($$);
}
}
%syntax_error {
if (!TOKEN)
g_string_append_printf(bd->error,"syntax error at end of file");
else
g_string_append_printf(bd->error,"syntax error in %s at or before '%s': \n", TOKEN->location,TOKEN->text);
}
%parse_failure {
g_string_append_printf(bd->error,"DTD parsing failure\n");
}
%token_prefix TOKEN_
%token_type { dtd_token_data_t* }
dtd ::= doctype.
dtd ::= dtd_parts.
doctype ::= TAG_START DOCTYPE_KW NAME(Name) OPEN_BRACKET dtd_parts CLOSE_BRACKET TAG_STOP. {
dtd_named_list_t* root;
GPtrArray* root_elems = g_ptr_array_new();
guint i;
gchar *name;
if(! bd->proto_name) {
bd->proto_name = Name->text;
}
g_free(bd->proto_root);
bd->proto_root = Name->text;
name = g_ascii_strdown(bd->proto_name, -1);
g_free(bd->proto_name);
bd->proto_name = name;
for( i = 0; i< bd->elements->len; i++) {
dtd_named_list_t* el = (dtd_named_list_t*)g_ptr_array_index(bd->elements,i);
g_ptr_array_add(root_elems,g_strdup(el->name));
}
root = dtd_named_list_new(g_strdup(Name->text),root_elems);
g_ptr_array_add(bd->elements,root);
g_free(Name->location);
g_free(Name);
}
dtd_parts ::= dtd_parts element(Element). { g_ptr_array_add(bd->elements,Element); }
dtd_parts ::= dtd_parts attlist(Attlist). { g_ptr_array_add(bd->attributes,Attlist); }
dtd_parts ::= element(Element). { g_ptr_array_add(bd->elements,Element); }
dtd_parts ::= attlist(Attlist). { g_ptr_array_add(bd->attributes,Attlist); }
%type attlist { dtd_named_list_t* }
attlist(A) ::= TAG_START ATTLIST_KW NAME(B) attrib_list(TheList) TAG_STOP. {
A = dtd_named_list_new(g_ascii_strdown(B->text, -1),TheList);
g_free(B->text);
g_free(B->location);
g_free(B);
}
%type element { dtd_named_list_t* }
element(A) ::= TAG_START ELEMENT_KW NAME(B) sub_elements(C) TAG_STOP. {
A = dtd_named_list_new(g_ascii_strdown(B->text, -1),C);
g_free(B->text);
g_free(B->location);
g_free(B);
}
%type attrib_list { GPtrArray* }
attrib_list(A) ::= attrib_list(B) attrib(C). { g_ptr_array_add(B,C); A = B; }
attrib_list(A) ::= attrib(B). { A = g_ptr_array_new(); g_ptr_array_add(A,B); }
%type attrib { gchar* }
attrib(A) ::= NAME(B) att_type att_default. {
A = g_ascii_strdown(B->text, -1);
g_free(B->text);
g_free(B->location);
g_free(B);
}
att_type ::= ATT_TYPE.
att_type ::= enumeration.
att_default ::= ATT_DEF.
att_default ::= ATT_DEF_WITH_VALUE QUOTED.
att_default ::= QUOTED.
att_default ::= IMPLIED_KW.
att_default ::= REQUIRED_KW.
enumeration ::= OPEN_PARENS enum_list CLOSE_PARENS.
enum_list ::= enum_list PIPE enum_item.
enum_list ::= enum_item.
enum_list ::= enumeration.
enum_list ::= enum_list PIPE enumeration.
enum_item ::= NAME.
enum_item ::= QUOTED.
%type sub_elements { GPtrArray* }
sub_elements(A) ::= sub_elements(B) STAR. {A=B;}
sub_elements(A) ::= sub_elements(B) PLUS. {A=B;}
sub_elements(A) ::= sub_elements(B) QUESTION. {A=B;}
sub_elements(A) ::= OPEN_PARENS ELEM_DATA CLOSE_PARENS. { A = g_ptr_array_new(); }
sub_elements(A) ::= OPEN_PARENS element_list(B) COMMA ELEM_DATA CLOSE_PARENS. { A = B; }
sub_elements(A) ::= OPEN_PARENS element_list(B) PIPE ELEM_DATA CLOSE_PARENS. { A = B; }
sub_elements(A) ::= OPEN_PARENS element_list(B) CLOSE_PARENS. { A = B; }
sub_elements(A) ::= EMPTY_KW. { A = g_ptr_array_new(); }
%type element_list { GPtrArray* }
element_list(A) ::= element_list(B) COMMA element_child(C). { g_ptr_array_add(B,C); A = B; }
element_list(A) ::= element_list(B) PIPE element_child(C). { g_ptr_array_add(B,C); A = B; }
element_list(A) ::= element_child(B). { A = g_ptr_array_new(); g_ptr_array_add(A,B); }
element_list(A) ::= sub_elements(B). { A = B; }
element_list(A) ::= element_list(B) COMMA sub_elements(C). { A = g_ptr_array_join(B,C); }
element_list(A) ::= element_list(B) PIPE sub_elements(C). { A = g_ptr_array_join(B,C); }
%type element_child { gchar* }
element_child(A) ::= NAME(B). {
A = g_ascii_strdown(B->text, -1);
g_free(B->text);
g_free(B->location);
g_free(B);
}
element_child(A) ::= NAME(B) STAR. {
A = g_ascii_strdown(B->text, -1);
g_free(B->text);
g_free(B->location);
g_free(B);
}
element_child(A) ::= NAME(B) QUESTION. {
A = g_ascii_strdown(B->text, -1);
g_free(B->text);
g_free(B->location);
g_free(B);
}
element_child(A) ::= NAME(B) PLUS. {
A = g_ascii_strdown(B->text, -1);
g_free(B->text);
g_free(B->location);
g_free(B);
}
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