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/*
* Phusion Passenger - https://www.phusionpassenger.com/
* Copyright (c) 2015-2018 Phusion Holding B.V.
*
* "Passenger", "Phusion Passenger" and "Union Station" are registered
* trademarks of Phusion Holding B.V.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef _PASSENGER_APPLICATION_POOL2_API_KEY_H_
#define _PASSENGER_APPLICATION_POOL2_API_KEY_H_
#include <oxt/macros.hpp>
#include <string>
#include <cstring>
#include <Exceptions.h>
#include <StaticString.h>
#include <StrIntTools/StrIntUtils.h>
namespace Passenger {
namespace ApplicationPool2 {
using namespace std;
/**
* An API key is a string that determines which app a particular ApiServer
* client may access. It is automatically generated by a Group and passed to
* all application processes that it spawns. Application processes can then
* use that API key to perform API calls by connecting to the ApiServer.
*
* An API key is transient, not persistent. That is, it is only valid during
* the life time of a Group. It is not pre-generated by the user.
*
* An API key is unique per Pool, so may be used to uniquely identify a Group
* object within a Pool.
*
* An API key may be null, which means that it's not given.
*
* There also exists a special "super" API key. This API key doesn't have a
* particular value, so it cannot be used to uniquely identify a Group. Instead,
* its purpose is to signal that the client is authorized to access all apps in
* the Pool. Super API keys are associated with ApiServer clients that are
* authenticated with one of the API accounts.
*/
class ApiKey {
public:
static const unsigned int SIZE = 16;
private:
/*
* On x86_64 the value is as big as a StaticString,
* so might as well directly embed the data instead.
*/
char value[SIZE];
OXT_FORCE_INLINE
bool validateNonSuperKeyValueChar(const char ch) const {
return (ch >= 'a' && ch <= 'z')
|| (ch >= 'A' && ch <= 'Z')
|| (ch >= '0' && ch <= '9');
}
void validateNonSuperKeyValue(const StaticString &value) const {
const char *data = value.data();
const char *end = value.data() + value.size();
while (data < end) {
if (!validateNonSuperKeyValueChar(*data)) {
throw ArgumentException("API keys may only contain the characters a-z, A-Z and 0-9.");
}
data++;
}
}
public:
ApiKey() {
value[0] = '\0';
}
ApiKey(const StaticString &other) {
if (other.size() != SIZE) {
throw ArgumentException("API keys must be exactly "
+ Passenger::toString(SIZE) + " characters in length");
}
validateNonSuperKeyValue(other);
memcpy(value, other.data(), SIZE);
}
ApiKey& operator=(const ApiKey &other) = default;
ApiKey(const ApiKey &other) {
memcpy(value, other.value, SIZE);
}
static ApiKey makeSuper() {
ApiKey key;
key.value[0] = '!';
assert(key.isSuper());
return key;
}
bool isNull() const {
return value[0] == '\0';
}
bool isSuper() const {
return value[0] == '!';
}
bool constantTimeCompare(const StaticString &other) const {
return Passenger::constantTimeCompare(toStaticString(), other);
}
bool constantTimeCompare(const ApiKey &other) const {
return Passenger::constantTimeCompare(toStaticString(), other.toStaticString());
}
string toString() const {
return toStaticString().toString();
}
StaticString toStaticString() const {
if (value[0] == '\0') {
return StaticString();
} else if (value[0] == '!') {
return StaticString("superkey");
} else {
return StaticString(value, SIZE);
}
}
bool operator==(const StaticString &other) const {
return other.size() == SIZE && memcmp(value, other.data(), SIZE) == 0;
}
bool operator==(const ApiKey &other) const {
return memcmp(value, other.value, SIZE) == 0;
}
};
} // namespace ApplicationPool2
} // namespace Passenger
#endif /* _PASSENGER_APPLICATION_POOL2_API_KEY_H_ */
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