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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/autofill/autofill_xml_parser.h"
#include <stdlib.h>
#include <string.h>
#include "base/logging.h"
#include "chrome/browser/autofill/autofill_server_field_info.h"
#include "third_party/libjingle/source/talk/xmllite/qname.h"
AutofillXmlParser::AutofillXmlParser()
: succeeded_(true) {
}
AutofillXmlParser::~AutofillXmlParser() {}
void AutofillXmlParser::CharacterData(
buzz::XmlParseContext* context, const char* text, int len) {
}
void AutofillXmlParser::EndElement(buzz::XmlParseContext* context,
const char* name) {
}
void AutofillXmlParser::Error(buzz::XmlParseContext* context,
XML_Error error_code) {
succeeded_ = false;
}
AutofillQueryXmlParser::AutofillQueryXmlParser(
std::vector<AutofillServerFieldInfo>* field_infos,
UploadRequired* upload_required,
std::string* experiment_id)
: field_infos_(field_infos),
upload_required_(upload_required),
current_page_number_(-1),
total_pages_(-1),
experiment_id_(experiment_id) {
DCHECK(upload_required_);
DCHECK(experiment_id_);
}
AutofillQueryXmlParser::~AutofillQueryXmlParser() {}
void AutofillQueryXmlParser::StartElement(buzz::XmlParseContext* context,
const char* name,
const char** attrs) {
buzz::QName qname = context->ResolveQName(name, false);
const std::string& element = qname.LocalPart();
if (element.compare("autofillqueryresponse") == 0) {
// We check for the upload required attribute below, but if it's not
// present, we use the default upload rates. Likewise, by default we assume
// an empty experiment id.
*upload_required_ = USE_UPLOAD_RATES;
*experiment_id_ = std::string();
// |attrs| is a NULL-terminated list of (attribute, value) pairs.
while (*attrs) {
buzz::QName attribute_qname = context->ResolveQName(*attrs, true);
++attrs;
const std::string& attribute_name = attribute_qname.LocalPart();
if (attribute_name.compare("uploadrequired") == 0) {
if (strcmp(*attrs, "true") == 0)
*upload_required_ = UPLOAD_REQUIRED;
else if (strcmp(*attrs, "false") == 0)
*upload_required_ = UPLOAD_NOT_REQUIRED;
} else if (attribute_name.compare("experimentid") == 0) {
*experiment_id_ = *attrs;
}
++attrs;
}
} else if (element.compare("field") == 0) {
if (!*attrs) {
// Missing the "autofilltype" attribute, abort.
context->RaiseError(XML_ERROR_ABORTED);
return;
}
// Determine the field type from the attribute value. There should be one
// attribute (autofilltype) with an integer value.
AutofillServerFieldInfo field_info;
field_info.field_type = UNKNOWN_TYPE;
// |attrs| is a NULL-terminated list of (attribute, value) pairs.
while (*attrs) {
buzz::QName attribute_qname = context->ResolveQName(*attrs, true);
++attrs;
const std::string& attribute_name = attribute_qname.LocalPart();
if (attribute_name.compare("autofilltype") == 0) {
int value = GetIntValue(context, *attrs);
if (value >= 0 && value < MAX_VALID_FIELD_TYPE)
field_info.field_type = static_cast<AutofillFieldType>(value);
else
field_info.field_type = NO_SERVER_DATA;
} else if (field_info.field_type == FIELD_WITH_DEFAULT_VALUE &&
attribute_name.compare("defaultvalue") == 0) {
field_info.default_value = *attrs;
}
++attrs;
}
// Record this field type, default value pair.
field_infos_->push_back(field_info);
} else if (element.compare("autofill_flow") == 0) {
// |attrs| is a NULL-terminated list of (attribute, value) pairs.
while (*attrs) {
buzz::QName attribute_qname = context->ResolveQName(*attrs, true);
++attrs;
const std::string& attribute_name = attribute_qname.LocalPart();
if (attribute_name.compare("page_no") == 0)
current_page_number_ = GetIntValue(context, *attrs);
else if (attribute_name.compare("total_pages") == 0)
total_pages_ = GetIntValue(context, *attrs);
++attrs;
}
} else if (element.compare("page_advance_button") == 0) {
// |attrs| is a NULL-terminated list of (attribute, value) pairs.
// If both id and css_selector are set, the first one to appear will take
// precedence.
while (*attrs) {
buzz::QName attribute_qname = context->ResolveQName(*attrs, true);
++attrs;
const std::string& attribute_name = attribute_qname.LocalPart();
buzz::QName value_qname = context->ResolveQName(*attrs, true);
++attrs;
const std::string& attribute_value = value_qname.LocalPart();
if (attribute_name.compare("id") == 0 && !attribute_value.empty()) {
proceed_element_descriptor_.reset(new autofill::WebElementDescriptor());
proceed_element_descriptor_->retrieval_method =
autofill::WebElementDescriptor::ID;
proceed_element_descriptor_->descriptor = attribute_value;
break;
} else if (attribute_name.compare("css_selector") == 0 &&
!attribute_value.empty()) {
proceed_element_descriptor_.reset(new autofill::WebElementDescriptor());
proceed_element_descriptor_->retrieval_method =
autofill::WebElementDescriptor::CSS_SELECTOR;
proceed_element_descriptor_->descriptor = attribute_value;
break;
}
}
}
}
int AutofillQueryXmlParser::GetIntValue(buzz::XmlParseContext* context,
const char* attribute) {
char* attr_end = NULL;
int value = strtol(attribute, &attr_end, 10);
if (attr_end != NULL && attr_end == attribute) {
context->RaiseError(XML_ERROR_SYNTAX);
return 0;
}
return value;
}
AutofillUploadXmlParser::AutofillUploadXmlParser(double* positive_upload_rate,
double* negative_upload_rate)
: succeeded_(false),
positive_upload_rate_(positive_upload_rate),
negative_upload_rate_(negative_upload_rate) {
DCHECK(positive_upload_rate_);
DCHECK(negative_upload_rate_);
}
void AutofillUploadXmlParser::StartElement(buzz::XmlParseContext* context,
const char* name,
const char** attrs) {
buzz::QName qname = context->ResolveQName(name, false);
const std::string &element = qname.LocalPart();
if (element.compare("autofilluploadresponse") == 0) {
// Loop over all attributes to get the upload rates.
while (*attrs) {
buzz::QName attribute_qname = context->ResolveQName(attrs[0], true);
const std::string &attribute_name = attribute_qname.LocalPart();
if (attribute_name.compare("positiveuploadrate") == 0) {
*positive_upload_rate_ = GetDoubleValue(context, attrs[1]);
} else if (attribute_name.compare("negativeuploadrate") == 0) {
*negative_upload_rate_ = GetDoubleValue(context, attrs[1]);
}
attrs += 2; // We peeked at attrs[0] and attrs[1], skip past both.
}
}
}
double AutofillUploadXmlParser::GetDoubleValue(buzz::XmlParseContext* context,
const char* attribute) {
char* attr_end = NULL;
double value = strtod(attribute, &attr_end);
if (attr_end != NULL && attr_end == attribute) {
context->RaiseError(XML_ERROR_SYNTAX);
return 0.0;
}
return value;
}
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