1 /*
2 * libjingle
3 * Copyright 2004--2005, Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "talk/xmpp/xmppstanzaparser.h"
29
30 #include "talk/xmllite/xmlelement.h"
31 #include "talk/base/common.h"
32 #include "talk/xmpp/constants.h"
33 #ifdef EXPAT_RELATIVE_PATH
34 #include "expat.h"
35 #else
36 #include "third_party/expat/v2_0_1/Source/lib/expat.h"
37 #endif
38
39 namespace buzz {
40
XmppStanzaParser(XmppStanzaParseHandler * psph)41 XmppStanzaParser::XmppStanzaParser(XmppStanzaParseHandler *psph) :
42 psph_(psph),
43 innerHandler_(this),
44 parser_(&innerHandler_),
45 depth_(0),
46 builder_() {
47 }
48
49 void
Reset()50 XmppStanzaParser::Reset() {
51 parser_.Reset();
52 depth_ = 0;
53 builder_.Reset();
54 }
55
56 void
IncomingStartElement(XmlParseContext * pctx,const char * name,const char ** atts)57 XmppStanzaParser::IncomingStartElement(
58 XmlParseContext * pctx, const char * name, const char ** atts) {
59 if (depth_++ == 0) {
60 XmlElement * pelStream = XmlBuilder::BuildElement(pctx, name, atts);
61 if (pelStream == NULL) {
62 pctx->RaiseError(XML_ERROR_SYNTAX);
63 return;
64 }
65 psph_->StartStream(pelStream);
66 delete pelStream;
67 return;
68 }
69
70 builder_.StartElement(pctx, name, atts);
71 }
72
73 void
IncomingCharacterData(XmlParseContext * pctx,const char * text,int len)74 XmppStanzaParser::IncomingCharacterData(
75 XmlParseContext * pctx, const char * text, int len) {
76 if (depth_ > 1) {
77 builder_.CharacterData(pctx, text, len);
78 }
79 }
80
81 void
IncomingEndElement(XmlParseContext * pctx,const char * name)82 XmppStanzaParser::IncomingEndElement(
83 XmlParseContext * pctx, const char * name) {
84 if (--depth_ == 0) {
85 psph_->EndStream();
86 return;
87 }
88
89 builder_.EndElement(pctx, name);
90
91 if (depth_ == 1) {
92 XmlElement *element = builder_.CreateElement();
93 psph_->Stanza(element);
94 delete element;
95 }
96 }
97
98 void
IncomingError(XmlParseContext * pctx,XML_Error errCode)99 XmppStanzaParser::IncomingError(
100 XmlParseContext * pctx, XML_Error errCode) {
101 UNUSED(pctx);
102 UNUSED(errCode);
103 psph_->XmlError();
104 }
105
106 }
107