bbcb4a7b03
clixon-config.yang: New revision and Added `CLICON_NETCONF_CREATOR_ATTR` option clixon-lib.yang: Added creator meta Changed return value of xml_add_attr
506 lines
16 KiB
Text
506 lines
16 KiB
Text
/*
|
|
*
|
|
***** BEGIN LICENSE BLOCK *****
|
|
|
|
Copyright (C) 2009-2016 Olof Hagsand and Benny Holmgren
|
|
Copyright (C) 2017-2019 Olof Hagsand
|
|
Copyright (C) 2020-2022 Olof Hagsand and Rubicon Communications, LLC(Netgate)
|
|
|
|
This file is part of CLIXON.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
|
|
Alternatively, the contents of this file may be used under the terms of
|
|
the GNU General Public License Version 3 or later (the "GPL"),
|
|
in which case the provisions of the GPL are applicable instead
|
|
of those above. If you wish to allow use of your version of this file only
|
|
under the terms of the GPL, and not to allow others to
|
|
use your version of this file under the terms of Apache License version 2,
|
|
indicate your decision by deleting the provisions above and replace them with
|
|
the notice and other provisions required by the GPL. If you do not delete
|
|
the provisions above, a recipient may use your version of this file under
|
|
the terms of any one of the Apache License version 2 or the GPL.
|
|
|
|
***** END LICENSE BLOCK *****
|
|
|
|
* XML parser
|
|
* @see https://www.w3.org/TR/2008/REC-xml-20081126
|
|
* https://www.w3.org/TR/2009/REC-xml-names-20091208
|
|
* Canonical XML version (just for info)
|
|
* https://www.w3.org/TR/xml-c14n
|
|
*/
|
|
%union {
|
|
char *string;
|
|
}
|
|
|
|
%start document
|
|
|
|
%token <string> NAME CHARDATA ENCODED WHITESPACE STRING
|
|
%token MY_EOF
|
|
%token VER ENC SD
|
|
%token BSLASH ESLASH
|
|
%token BXMLDCL BQMARK EQMARK
|
|
%token BCOMMENT ECOMMENT
|
|
|
|
%type <string> attvalue
|
|
|
|
%lex-param {void *_xy} /* Add this argument to parse() and lex() function */
|
|
%parse-param {void *_xy}
|
|
|
|
%{
|
|
|
|
/* typecast macro */
|
|
#define _XY ((clixon_xml_yacc *)_xy)
|
|
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include <strings.h>
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
|
|
/* cligen */
|
|
#include <cligen/cligen.h>
|
|
|
|
/* clicon */
|
|
#include "clixon_err.h"
|
|
#include "clixon_log.h"
|
|
#include "clixon_queue.h"
|
|
#include "clixon_hash.h"
|
|
#include "clixon_string.h"
|
|
#include "clixon_handle.h"
|
|
#include "clixon_yang.h"
|
|
#include "clixon_xml.h"
|
|
#include "clixon_xml_sort.h"
|
|
#include "clixon_xml_parse.h"
|
|
|
|
/* Enable for debugging, steals some cycles otherwise */
|
|
#if 0
|
|
#define _PARSE_DEBUG(s) clixon_debug(1,(s))
|
|
#else
|
|
#define _PARSE_DEBUG(s)
|
|
#endif
|
|
|
|
void
|
|
clixon_xml_parseerror(void *_xy,
|
|
char *s)
|
|
{
|
|
clicon_err(OE_XML, XMLPARSE_ERRNO, "xml_parse: line %d: %s: at or before: %s",
|
|
_XY->xy_linenum,
|
|
s,
|
|
clixon_xml_parsetext);
|
|
return;
|
|
}
|
|
|
|
/*! Parse XML content, eg chars between >...<
|
|
*
|
|
* @param[in] xy
|
|
* @param[in] encoded set if ampersand encoded
|
|
* @param[in] str Body string, direct pointer (copy before use, dont free)
|
|
* @retval 0 OK
|
|
* @retval -1 Error
|
|
* Note that we dont handle escaped characters correctly
|
|
* there may also be some leakage here on NULL return
|
|
*/
|
|
static int
|
|
xml_parse_content(clixon_xml_yacc *xy,
|
|
int encoded,
|
|
char *str)
|
|
{
|
|
int retval = -1;
|
|
cxobj *xn = xy->xy_xelement;
|
|
cxobj *xp = xy->xy_xparent;
|
|
|
|
|
|
xy->xy_xelement = NULL; /* init */
|
|
if (xn == NULL){
|
|
if ((xn = xml_new("body", xp, CX_BODY)) == NULL)
|
|
goto done;
|
|
}
|
|
if (encoded)
|
|
if (xml_value_append(xn, "&") < 0)
|
|
goto done;
|
|
if (xml_value_append(xn, str) < 0)
|
|
goto done;
|
|
xy->xy_xelement = xn;
|
|
retval = 0;
|
|
done:
|
|
return retval;
|
|
}
|
|
|
|
/*! Add whitespace
|
|
*
|
|
* If text, ie only body, keep as is.
|
|
* But if there is an element, then skip all whitespace.
|
|
* @retval 0 OK
|
|
* @retval -1 Error
|
|
*/
|
|
static int
|
|
xml_parse_whitespace(clixon_xml_yacc *xy,
|
|
char *str)
|
|
{
|
|
int retval = -1;
|
|
cxobj *xn = xy->xy_xelement;
|
|
cxobj *xp = xy->xy_xparent;
|
|
int i;
|
|
|
|
xy->xy_xelement = NULL; /* init */
|
|
/* If there is an element already, only add one whitespace child
|
|
* otherwise, keep all whitespace. See code in xml_parse_bslash
|
|
* Note that this xml element is not aware of YANG yet.
|
|
* For example, if xp is LEAF then a body child is OK, but if xp is CONTAINER
|
|
* then the whitespace body is pretty-prints and should be stripped (later)
|
|
*/
|
|
for (i=0; i<xml_child_nr(xp); i++){
|
|
if (xml_type(xml_child_i(xp, i)) == CX_ELMNT)
|
|
goto ok; /* Skip if already element */
|
|
}
|
|
if (xn == NULL){
|
|
if ((xn = xml_new("body", xp, CX_BODY)) == NULL)
|
|
goto done;
|
|
}
|
|
if (xml_value_append(xn, str) < 0)
|
|
goto done;
|
|
xy->xy_xelement = xn;
|
|
ok:
|
|
retval = 0;
|
|
done:
|
|
return retval;
|
|
}
|
|
|
|
static int
|
|
xml_parse_version(clixon_xml_yacc *xy,
|
|
char *ver)
|
|
{
|
|
if(strcmp(ver, "1.0")){
|
|
clicon_err(OE_XML, XMLPARSE_ERRNO, "Unsupported XML version: %s expected 1.0", ver);
|
|
free(ver);
|
|
return -1;
|
|
}
|
|
if (ver)
|
|
free(ver);
|
|
return 0;
|
|
}
|
|
|
|
/*! Parse XML encoding
|
|
*
|
|
* From under Encoding Declaration:
|
|
* In an encoding declaration, the values UTF-8, UTF-16, ISO-10646-UCS-2, and ISO-10646-UCS-4
|
|
* SHOULD be used for the various encodings and transformations of Unicode / ISO/IEC 10646, the
|
|
* values ISO-8859-1, ISO-8859-2, ... ISO-8859- n (where n is the part number) SHOULD be used for
|
|
* the parts of ISO 8859, and the values ISO-2022-JP, Shift_JIS, and EUC-JP " SHOULD be used for
|
|
* the various encoded forms of JIS X-0208-1997.
|
|
* [UTF-8 is default]
|
|
* Note that since ASCII is a subset of UTF-8, ordinary ASCII entities do not strictly need an
|
|
* encoding declaration.
|
|
*
|
|
* Clixon supports only UTF-8 (or no declaration)
|
|
*/
|
|
static int
|
|
xml_parse_encoding(clixon_xml_yacc *xy,
|
|
char *enc)
|
|
{
|
|
if(strcasecmp(enc, "UTF-8")){
|
|
clicon_err(OE_XML, XMLPARSE_ERRNO, "Unsupported XML encoding: %s expected UTF-8", enc);
|
|
free(enc);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*! Parse Qualified name -> (Un)PrefixedName
|
|
*
|
|
* This is where all (parsed) xml elements are created
|
|
* @param[in] xy XML parser yacc handler struct
|
|
* @param[in] prefix Prefix, namespace, or NULL
|
|
* @param[in] localpart Name
|
|
* @retval 0 OK
|
|
* @retval -1 Error
|
|
*/
|
|
static int
|
|
xml_parse_prefixed_name(clixon_xml_yacc *xy,
|
|
char *prefix,
|
|
char *name)
|
|
{
|
|
int retval = -1;
|
|
cxobj *x;
|
|
cxobj *xp; /* xml parent */
|
|
|
|
xp = xy->xy_xparent;
|
|
if ((x = xml_new(name, xp, CX_ELMNT)) == NULL)
|
|
goto done;
|
|
/* Cant check namespaces here since local xmlns attributes loaded after */
|
|
if (xml_prefix_set(x, prefix) < 0)
|
|
goto done;
|
|
|
|
xy->xy_xelement = x;
|
|
/* If topmost, add to top-list created list */
|
|
if (xp == xy->xy_xtop){
|
|
if (cxvec_append(x, &xy->xy_xvec, &xy->xy_xlen) < 0)
|
|
goto done;
|
|
}
|
|
retval = 0;
|
|
done:
|
|
if (prefix)
|
|
free(prefix);
|
|
if (name)
|
|
free(name);
|
|
return retval;
|
|
}
|
|
|
|
static int
|
|
xml_parse_endslash_pre(clixon_xml_yacc *xy)
|
|
{
|
|
xy->xy_xparent = xy->xy_xelement;
|
|
xy->xy_xelement = NULL;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
xml_parse_endslash_mid(clixon_xml_yacc *xy)
|
|
{
|
|
if (xy->xy_xelement != NULL)
|
|
xy->xy_xelement = xml_parent(xy->xy_xelement);
|
|
else
|
|
xy->xy_xelement = xy->xy_xparent;
|
|
xy->xy_xparent = xml_parent(xy->xy_xelement);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
xml_parse_endslash_post(clixon_xml_yacc *xy)
|
|
{
|
|
xy->xy_xelement = NULL;
|
|
return 0;
|
|
}
|
|
|
|
/*! A content terminated by <name>...</name> or <prefix:name>...</prefix:name> is ready
|
|
*
|
|
* Any whitespace between the subelements to a non-leaf is
|
|
* insignificant, i.e., an implementation MAY insert whitespace
|
|
* characters between subelements and are therefore stripped, but see comment in code below.
|
|
* @param[in] xy XML parser yacc handler struct
|
|
* @param[in] prefix
|
|
* @param[in] name
|
|
* @retval 0 OK
|
|
* @retval -1 Error
|
|
*/
|
|
static int
|
|
xml_parse_bslash(clixon_xml_yacc *xy,
|
|
char *prefix,
|
|
char *name)
|
|
{
|
|
int retval = -1;
|
|
cxobj *x = xy->xy_xelement;
|
|
cxobj *xc;
|
|
char *prefix0;
|
|
char *name0;
|
|
|
|
/* These are existing tags */
|
|
prefix0 = xml_prefix(x);
|
|
name0 = xml_name(x);
|
|
/* Check name or prerix unequal from begin-tag */
|
|
if (clicon_strcmp(name0, name) ||
|
|
clicon_strcmp(prefix0, prefix)){
|
|
clicon_err(OE_XML, XMLPARSE_ERRNO, "Sanity check failed: %s%s%s vs %s%s%s",
|
|
prefix0?prefix0:"", prefix0?":":"", name0,
|
|
prefix?prefix:"", prefix?":":"", name);
|
|
goto done;
|
|
}
|
|
/* Strip pretty-print. Ad-hoc algorithm
|
|
* It ok with x:[body], but not with x:[ex,body]
|
|
* It is also ok with x:[attr,body]
|
|
* So the rule is: if there is at least on element, then remove all bodies.
|
|
* See also code in xml_parse_whitespace
|
|
* But there is more: when YANG is assigned, if not leaf/leaf-lists, then all contents should
|
|
* be stripped, see xml_bind_yang()
|
|
*/
|
|
xc = NULL;
|
|
while ((xc = xml_child_each(x, xc, CX_ELMNT)) != NULL)
|
|
break;
|
|
if (xc != NULL){ /* at least one element */
|
|
if (xml_rm_children(x, CX_BODY) < 0) /* remove all bodies */
|
|
goto done;
|
|
}
|
|
retval = 0;
|
|
done:
|
|
if (prefix)
|
|
free(prefix);
|
|
if (name)
|
|
free(name);
|
|
return retval;
|
|
}
|
|
|
|
/*! Parse XML attribute
|
|
*
|
|
* Special cases:
|
|
* - DefaultAttName: xmlns
|
|
* - PrefixedAttName: xmlns:NAME
|
|
* @retval 0 OK
|
|
* @retval -1 Error
|
|
*/
|
|
static int
|
|
xml_parse_attr(clixon_xml_yacc *xy,
|
|
char *prefix,
|
|
char *name,
|
|
char *attval)
|
|
{
|
|
int retval = -1;
|
|
cxobj *xa = NULL;
|
|
|
|
/* XXX: here duplicates of same attributes are removed
|
|
* This is probably not according standard?
|
|
*/
|
|
if ((xa = xml_find_type(xy->xy_xelement, prefix, name, CX_ATTR)) == NULL){
|
|
if ((xa = xml_new(name, xy->xy_xelement, CX_ATTR)) == NULL)
|
|
goto done;
|
|
if (xml_prefix_set(xa, prefix) < 0)
|
|
goto done;
|
|
}
|
|
if (xml_value_set(xa, attval) < 0)
|
|
goto done;
|
|
retval = 0;
|
|
done:
|
|
free(name);
|
|
if (prefix)
|
|
free(prefix);
|
|
free(attval);
|
|
return retval;
|
|
}
|
|
|
|
%}
|
|
|
|
%%
|
|
/* [1] document ::= prolog element Misc* */
|
|
document : prolog element misclist MY_EOF
|
|
{ _PARSE_DEBUG("document->prolog element misc* ACCEPT");
|
|
YYACCEPT; }
|
|
| elist MY_EOF
|
|
{ _PARSE_DEBUG("document->elist ACCEPT"); /* internal exception*/
|
|
YYACCEPT; }
|
|
;
|
|
/* [22] prolog ::= XMLDecl? Misc* (doctypedecl Misc*)? */
|
|
prolog : xmldcl misclist
|
|
{ _PARSE_DEBUG("prolog->xmldcl misc*"); }
|
|
| misclist
|
|
{ _PARSE_DEBUG("prolog->misc*"); }
|
|
;
|
|
|
|
misclist : misclist misc { _PARSE_DEBUG("misclist->misclist misc"); }
|
|
| { _PARSE_DEBUG("misclist->"); }
|
|
;
|
|
|
|
/* [27] Misc ::= Comment | PI | S */
|
|
misc : comment { _PARSE_DEBUG("misc->comment"); }
|
|
| pi { _PARSE_DEBUG("misc->pi"); }
|
|
| WHITESPACE { _PARSE_DEBUG("misc->white space"); }
|
|
;
|
|
|
|
/* [23] XMLDecl ::= '<?xml' VersionInfo EncodingDecl? SDDecl? S? '?>'*/
|
|
xmldcl : BXMLDCL verinfo encodingdecl sddecl EQMARK
|
|
{ _PARSE_DEBUG("xmldcl->verinfo encodingdecl? sddecl?"); }
|
|
;
|
|
|
|
verinfo : VER '=' '\"' STRING '\"'
|
|
{ if (xml_parse_version(_XY, $4) <0) YYABORT;
|
|
_PARSE_DEBUG("verinfo->version=\"STRING\"");}
|
|
| VER '=' '\'' STRING '\''
|
|
{ if (xml_parse_version(_XY, $4) <0) YYABORT;
|
|
_PARSE_DEBUG("verinfo->version='STRING'");}
|
|
;
|
|
|
|
encodingdecl : ENC '=' '\"' STRING '\"'
|
|
{ if (xml_parse_encoding(_XY, $4) <0) YYABORT; if ($4)free($4);
|
|
_PARSE_DEBUG("encodingdecl-> encoding = \" STRING \"");}
|
|
| ENC '=' '\'' STRING '\''
|
|
{ if (xml_parse_encoding(_XY, $4) <0) YYABORT; if ($4)free($4);
|
|
_PARSE_DEBUG("encodingdecl-> encoding = ' STRING '");}
|
|
|
|
|
;
|
|
|
|
sddecl : SD '=' '\"' STRING '\"' {if ($4)free($4);}
|
|
| SD '=' '\'' STRING '\'' {if ($4)free($4);}
|
|
|
|
|
;
|
|
/* [39] element ::= EmptyElemTag | STag content ETag */
|
|
element : '<' qname attrs element1
|
|
{ _PARSE_DEBUG("element -> < qname attrs element1"); }
|
|
;
|
|
|
|
qname : NAME { if (xml_parse_prefixed_name(_XY, NULL, $1) < 0) YYABORT;
|
|
_PARSE_DEBUG("qname -> NAME");}
|
|
| NAME ':' NAME { if (xml_parse_prefixed_name(_XY, $1, $3) < 0) YYABORT;
|
|
_PARSE_DEBUG("qname -> NAME : NAME");}
|
|
;
|
|
|
|
element1 : ESLASH {_XY->xy_xelement = NULL;
|
|
_PARSE_DEBUG("element1 -> />");}
|
|
| '>' { xml_parse_endslash_pre(_XY); }
|
|
elist { xml_parse_endslash_mid(_XY); }
|
|
endtag { xml_parse_endslash_post(_XY);
|
|
_PARSE_DEBUG("element1 -> > elist endtag");}
|
|
;
|
|
|
|
endtag : BSLASH NAME '>'
|
|
{ _PARSE_DEBUG("endtag -> < </ NAME>");
|
|
if (xml_parse_bslash(_XY, NULL, $2) < 0) YYABORT; }
|
|
|
|
| BSLASH NAME ':' NAME '>'
|
|
{ if (xml_parse_bslash(_XY, $2, $4) < 0) YYABORT;
|
|
_PARSE_DEBUG("endtag -> < </ NAME:NAME >"); }
|
|
;
|
|
|
|
elist : elist content { _PARSE_DEBUG("elist -> elist content"); }
|
|
| content { _PARSE_DEBUG("elist -> content"); }
|
|
;
|
|
|
|
/* Rule 43 */
|
|
content : element { _PARSE_DEBUG("content -> element"); }
|
|
| comment { _PARSE_DEBUG("content -> comment"); }
|
|
| pi { _PARSE_DEBUG("content -> pi"); }
|
|
| CHARDATA { if (xml_parse_content(_XY, 0, $1) < 0) YYABORT;
|
|
_PARSE_DEBUG("content -> CHARDATA"); }
|
|
| ENCODED { if (xml_parse_content(_XY, 1, $1) < 0) YYABORT;
|
|
_PARSE_DEBUG("content -> ENCODED"); }
|
|
| WHITESPACE { if (xml_parse_whitespace(_XY, $1) < 0) YYABORT;
|
|
_PARSE_DEBUG("content -> WHITESPACE"); }
|
|
| { _PARSE_DEBUG("content -> "); }
|
|
;
|
|
|
|
comment : BCOMMENT ECOMMENT
|
|
;
|
|
|
|
pi : BQMARK NAME EQMARK {_PARSE_DEBUG("pi -> <? NAME ?>"); free($2); }
|
|
| BQMARK NAME STRING EQMARK
|
|
{ _PARSE_DEBUG("pi -> <? NAME STRING ?>"); free($2); free($3);}
|
|
;
|
|
|
|
|
|
attrs : attrs attr { _PARSE_DEBUG("attrs -> attrs attr"); }
|
|
| { _PARSE_DEBUG("attrs ->"); }
|
|
;
|
|
|
|
attr : NAME '=' attvalue { if (xml_parse_attr(_XY, NULL, $1, $3) < 0) YYABORT;
|
|
_PARSE_DEBUG("attr -> NAME = attvalue"); }
|
|
| NAME ':' NAME '=' attvalue { if (xml_parse_attr(_XY, $1, $3, $5) < 0) YYABORT;
|
|
_PARSE_DEBUG("attr -> NAME : NAME = attvalue"); }
|
|
;
|
|
|
|
attvalue : '\"' STRING '\"' { $$=$2; /* $2 must be consumed */}
|
|
| '\"' '\"' { $$=strdup(""); /* $2 must be consumed */}
|
|
| '\'' STRING '\'' { $$=$2; /* $2 must be consumed */}
|
|
| '\'' '\'' { $$=strdup(""); /* $2 must be consumed */}
|
|
;
|
|
|
|
%%
|
|
|