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#include <string>
#include <iostream>
#include "SecNativeFeatureCppIf.h"
#include <expat.h>
#include <stdlib.h>
// feature file location (which should be "/system/csc/feature.xml")
#define FEATURE_FILE "/system/csc/feature.xml"
// feature file location (which should be "/system/csc/others.xml")
#define MPS_FEATURE_FILE "/system/csc/others.xml"
// XML parsing using expat lib - handlers
typedef struct{
std::string curr_name;
std::map<std::string,std::string> *pFeatures;
int depth;
} ParserUserData;
static void XMLCALL
charDataHandler(void *userData, const char *s, int len){
ParserUserData* pData = (ParserUserData*)userData;
std::string value(s, len);
std::string curr_name = pData->curr_name;
if(!curr_name.empty()){
std::map<std::string,std::string>::iterator result = (*pData->pFeatures).find(curr_name);
if (result != (*pData->pFeatures).end()) {
value = result->second + value;
(*pData->pFeatures).erase(curr_name);
}
std::map<std::string,std::string>::iterator begin;
begin = (*pData->pFeatures).begin();
std::pair<std::string,std::string> feature(curr_name,value);
(*pData->pFeatures).insert(begin, feature);
}
// else{
// // printf("no name\n");
// }
}
static void XMLCALL
startElement(void *userData, const char *name, const char **atts)
{
ParserUserData* pData = (ParserUserData*)userData;
pData->curr_name.assign(name);
pData->depth += 1;
}
static void XMLCALL
endElement(void *userData, const char *name)
{
ParserUserData* pData = (ParserUserData*)userData;
pData->curr_name.clear();
pData->depth -= 1;
}
// SecNativeFeture class implementation
SecNativeFeature* SecNativeFeature::_instance = NULL;
SecNativeFeature::SecNativeFeature() {
int load_result = 0;
_features.clear();
load_result = _loadFeature();
if (load_result == -1){
// todo : handle _loadFeature errors here.
}
}
SecNativeFeature::~SecNativeFeature() {
delete _instance;
}
SecNativeFeature* SecNativeFeature::getInstance() {
if(_instance == NULL) {
_instance = new SecNativeFeature();
}
return _instance;
}
bool SecNativeFeature::getEnableStatus(const char* tag) {
std::map<std::string,std::string>::iterator found;
found = _features.find(tag);
if(found == _features.end()) {
return false;
}
if(found->second.compare("true") == 0 || found->second.compare("TRUE") == 0) {
return true;
}
return false;
}
bool SecNativeFeature::getEnableStatus(const char* tag, bool defaultValue) {
std::map<std::string,std::string>::iterator found;
found = _features.find(tag);
if(found == _features.end()) {
return defaultValue;
}
if(found->second.compare("true") == 0 || found->second.compare("TRUE") == 0) {
return true;
}
return defaultValue;
}
const char* SecNativeFeature::getString(const char* tag) {
std::map<std::string,std::string>::iterator found;
found = _features.find(tag);
if(found == _features.end()) {
return "";
}
return found->second.c_str();
}
const char* SecNativeFeature::getString(const char* tag, char* defaultValue) {
std::map<std::string,std::string>::iterator found;
found = _features.find(tag);
if(found == _features.end()) {
return defaultValue;
}
return found->second.c_str();
}
int SecNativeFeature::getInteger(const char* tag) {
std::map<std::string,std::string>::iterator found;
found = _features.find(tag);
if(found == _features.end()) {
return -1;
}
std::string raw_value = _features.find(tag)->second;
return atoi(raw_value.c_str());
}
int SecNativeFeature::getInteger(const char* tag, int defaultValue) {
std::map<std::string,std::string>::iterator found;
found = _features.find(tag);
if(found == _features.end()) {
return defaultValue;
}
std::string raw_value = _features.find(tag)->second;
return atoi(raw_value.c_str());
}
int SecNativeFeature::_loadFeature(){
char buf[BUFSIZ];
XML_Parser parser = XML_ParserCreate(NULL);
int done;
FILE * pFeatureFile = NULL;
ParserUserData userData;
userData.curr_name = std::string ();
userData.pFeatures = &_features;
userData.depth = 0;
pFeatureFile = fopen(FEATURE_FILE, "r");
if (pFeatureFile == NULL) {
pFeatureFile = fopen(MPS_FEATURE_FILE, "r");
if (pFeatureFile == NULL) {
return -1;
}
}
XML_SetUserData(parser, &userData);
XML_SetElementHandler(parser, startElement, endElement);
XML_SetCharacterDataHandler(parser, charDataHandler);
do {
size_t len = fread(buf, 1, sizeof(buf), pFeatureFile);
if ((len != sizeof(buf)) && (ferror(pFeatureFile))){
fclose(pFeatureFile);
return -1;
}
done = len < sizeof(buf);
if (XML_Parse(parser, buf, len, done) == XML_STATUS_ERROR) {
if(pFeatureFile) {
fclose(pFeatureFile);
}
return -1;
}
} while (!done);
XML_ParserFree(parser);
fclose(pFeatureFile);
return 0;
}
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