1 /*
2 * Copyright 2004 The WebRTC Project Authors. All rights reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #include "webrtc/libjingle/xmpp/xmppstanzaparser.h"
12
13 #include "webrtc/libjingle/xmllite/xmlelement.h"
14 #include "webrtc/libjingle/xmpp/constants.h"
15 #include "webrtc/base/common.h"
16 #ifdef EXPAT_RELATIVE_PATH
17 #include "expat.h"
18 #else
19 #include "third_party/expat/v2_0_1/Source/lib/expat.h"
20 #endif
21
22 namespace buzz {
23
XmppStanzaParser(XmppStanzaParseHandler * psph)24 XmppStanzaParser::XmppStanzaParser(XmppStanzaParseHandler *psph) :
25 psph_(psph),
26 innerHandler_(this),
27 parser_(&innerHandler_),
28 depth_(0),
29 builder_() {
30 }
31
32 void
Reset()33 XmppStanzaParser::Reset() {
34 parser_.Reset();
35 depth_ = 0;
36 builder_.Reset();
37 }
38
39 void
IncomingStartElement(XmlParseContext * pctx,const char * name,const char ** atts)40 XmppStanzaParser::IncomingStartElement(
41 XmlParseContext * pctx, const char * name, const char ** atts) {
42 if (depth_++ == 0) {
43 XmlElement * pelStream = XmlBuilder::BuildElement(pctx, name, atts);
44 if (pelStream == NULL) {
45 pctx->RaiseError(XML_ERROR_SYNTAX);
46 return;
47 }
48 psph_->StartStream(pelStream);
49 delete pelStream;
50 return;
51 }
52
53 builder_.StartElement(pctx, name, atts);
54 }
55
56 void
IncomingCharacterData(XmlParseContext * pctx,const char * text,int len)57 XmppStanzaParser::IncomingCharacterData(
58 XmlParseContext * pctx, const char * text, int len) {
59 if (depth_ > 1) {
60 builder_.CharacterData(pctx, text, len);
61 }
62 }
63
64 void
IncomingEndElement(XmlParseContext * pctx,const char * name)65 XmppStanzaParser::IncomingEndElement(
66 XmlParseContext * pctx, const char * name) {
67 if (--depth_ == 0) {
68 psph_->EndStream();
69 return;
70 }
71
72 builder_.EndElement(pctx, name);
73
74 if (depth_ == 1) {
75 XmlElement *element = builder_.CreateElement();
76 psph_->Stanza(element);
77 delete element;
78 }
79 }
80
81 void
IncomingError(XmlParseContext * pctx,XML_Error errCode)82 XmppStanzaParser::IncomingError(
83 XmlParseContext * pctx, XML_Error errCode) {
84 RTC_UNUSED(pctx);
85 RTC_UNUSED(errCode);
86 psph_->XmlError();
87 }
88
89 }
90