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/* Copyright (C) 2013 BMW Group
* Author: Manfred Bathelt (manfred.bathelt@bmw.de)
* Author: Juergen Gehring (juergen.gehring@bmw.de)
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#if !defined (COMMONAPI_INTERNAL_COMPILATION)
#error "Only <CommonAPI/CommonAPI.h> can be included directly, this file may disappear or change contents."
#endif
#ifndef DBUSUTILS_H_
#define DBUSUTILS_H_
#include <algorithm>
#include <string>
#include <sstream>
#include <vector>
#include <unistd.h>
#include <future>
namespace CommonAPI {
namespace DBus {
inline std::vector<std::string>& split(const std::string& s, char delim, std::vector<std::string>& elems) {
std::istringstream ss(s);
std::string item;
while (std::getline(ss, item, delim)) {
elems.push_back(item);
}
return elems;
}
inline std::vector<std::string> split(const std::string& s, char delim) {
std::vector<std::string> elems;
return split(s, delim, elems);
}
inline bool containsOnlyAlphanumericCharacters(const std::string& toCheck) {
auto firstNonAlphanumericCharacterIt = std::find_if(toCheck.begin(),
toCheck.end(),
[](char c) {
return !std::isalnum(c);
});
return firstNonAlphanumericCharacterIt == toCheck.end();
}
inline bool isValidDomainName(const std::string& domainName) {
return containsOnlyAlphanumericCharacters(domainName);
}
inline bool isValidServiceName(const std::string& serviceName) {
bool isValid = serviceName[0] != '.' && serviceName[serviceName.size() - 1] != '.';
if (isValid) {
std::vector<std::string> splittedServiceName = split(serviceName, '.');
for (auto serviceNameElementIt = splittedServiceName.begin();
serviceNameElementIt != splittedServiceName.end() && isValid;
++serviceNameElementIt) {
isValid &= containsOnlyAlphanumericCharacters(*serviceNameElementIt);
}
}
return isValid;
}
inline bool isValidInstanceId(const std::string& instanceId) {
//Validation rules for ServiceName and InstanceID are equivalent
return isValidServiceName(instanceId);
}
inline bool isValidCommonApiAddress(const std::string& commonApiAddress) {
std::vector<std::string> splittedAddress = split(commonApiAddress, ':');
if (splittedAddress.size() != 3) {
return false;
}
return isValidDomainName(splittedAddress[0]) && isValidServiceName(splittedAddress[1]) && isValidInstanceId(splittedAddress[2]);
}
inline std::string getCurrentBinaryFileFQN() {
char fqnOfBinary[FILENAME_MAX];
char pathToProcessImage[FILENAME_MAX];
sprintf(pathToProcessImage, "/proc/%d/exe", getpid());
const ssize_t lengthOfFqn = readlink(pathToProcessImage, fqnOfBinary, sizeof(fqnOfBinary) - 1);
if (lengthOfFqn != -1) {
fqnOfBinary[lengthOfFqn] = '\0';
return std::string(std::move(fqnOfBinary));
} else {
return std::string("");
}
}
//In gcc 4.4.1, the enumeration "std::future_status" is defined, but the return values of some functions
//are bool where the same functions in gcc 4.6. return a value from this enum. This template is a way
//to ensure compatibility for this issue.
template<typename _FutureWaitType>
inline bool checkReady(_FutureWaitType&);
template<>
inline bool checkReady<bool>(bool& returnedValue) {
return returnedValue;
}
template<>
inline bool checkReady<std::future_status>(std::future_status& returnedValue) {
return returnedValue == std::future_status::ready;
}
}
}
#endif /* DBUSUTILS_H_ */
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