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File Name : Exceptions.h

/*
 *  Phusion Passenger - https://www.phusionpassenger.com/
 *  Copyright (c) 2010-2025 Asynchronous B.V.
 *
 *  "Passenger", "Phusion Passenger" and "Union Station" are registered
 *  trademarks of Asynchronous 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_EXCEPTIONS_H_
#define _PASSENGER_EXCEPTIONS_H_

#ifdef __cplusplus
extern "C" {
#endif

/* Provides helper structs and functions for translating C++ exceptions
 * into C error objects.
 */

#define PP_NO_ERRNO -1

struct PP_Error {
	/** The exception message. */
	const char *message;
	/** If the original exception was a SystemException, then this
	 * field is set to the corresponding errno value. Otherwise, it
	 * is set to PP_NO_ERRNO.
	 */
	int errnoCode;
	int messageIsStatic: 1;
};

typedef struct PP_Error PP_Error;

void pp_error_init(PP_Error *error);
void pp_error_destroy(PP_Error *error);

#ifdef __cplusplus
}
#endif

#ifdef __cplusplus

#include <oxt/tracable_exception.hpp>
#include <string>
#include <exception>
#include <sstream>
#include <cstring>
#include <cassert>

/**
 * Use as follows:
 *
 *     try {
 *         ...
 *     } catch (const std::exception &e) {
 *         pp_error_set(e, error);
 *     }
 */
void pp_error_set(const std::exception &ex, PP_Error *error);

/**
 * @defgroup Exceptions Exceptions
 */

namespace Passenger {

using namespace std;

/**
 * Represents an error returned by a system call or a standard library call.
 *
 * Use the code() method to find out the value of <tt>errno</tt> at the time
 * the error occured.
 *
 * @ingroup Exceptions
 */
class SystemException: public oxt::tracable_exception {
private:
	string briefMessage;
	string systemMessage;
	string fullMessage;
	int m_code;
public:
	/**
	 * Create a new SystemException.
	 *
	 * @param briefMessage A brief message describing the error.
	 * @param errorCode The error code, i.e. the value of errno right after the error occured.
	 * @note A system description of the error will be appended to the given message.
	 *    For example, if <tt>errorCode</tt> is <tt>EBADF</tt>, and <tt>briefMessage</tt>
	 *    is <em>"Something happened"</em>, then what() will return <em>"Something happened: Bad
	 *    file descriptor (10)"</em> (if 10 is the number for EBADF).
	 * @post code() == errorCode
	 * @post brief() == briefMessage
	 */
	SystemException(const string &briefMessage, int errorCode) {
		stringstream str;

str << strerror(errorCode) << " (errno=" << errorCode << ")";
		systemMessage = str.str();

setBriefMessage(briefMessage);
		m_code = errorCode;
	}

virtual ~SystemException() throw() {}

virtual const char *what() const throw() {
		return fullMessage.c_str();
	}

void setBriefMessage(const string &message) {
		briefMessage = message;
		fullMessage = briefMessage + ": " + systemMessage;
	}

/**
	 * The value of <tt>errno</tt> at the time the error occured.
	 */
	int code() const throw() {
		return m_code;
	}

/**
	 * Returns a brief version of the exception message. This message does
	 * not include the system error description, and is equivalent to the
	 * value of the <tt>message</tt> parameter as passed to the constructor.
	 */
	string brief() const throw() {
		return briefMessage;
	}

/**
	 * Returns the system's error message. This message contains both the
	 * content of <tt>strerror(errno)</tt> and the errno number itself.
	 */
	string sys() const throw() {
		return systemMessage;
	}
};

/**
 * A filesystem error, as returned by the operating system. This may include,
 * for example, permission errors.
 *
 * @ingroup Exceptions
 */
class FileSystemException: public SystemException {
private:
	string m_filename;
public:
	FileSystemException(const string &message, int errorCode,
		const string &filename)
		: SystemException(message, errorCode),
		  m_filename(filename) {}

virtual ~FileSystemException() throw() {}

/**
	 * The filename that's associated to the error.
	 */
	string filename() const throw() {
		return m_filename;
	}
};

/**
 * Unable to retrieve the system time using <tt>time()</tt>.
 *
 * @ingroup Exceptions
 */
class TimeRetrievalException: public SystemException {
public:
	TimeRetrievalException(const string &message, int errorCode)
		: SystemException(message, errorCode)
		{}
	virtual ~TimeRetrievalException() throw() {}
};

/**
 * Represents an error that occured during an I/O operation.
 *
 * @ingroup Exceptions
 */
class IOException: public oxt::tracable_exception {
private:
	string msg;
public:
	IOException(const string &message): msg(message) {}
	virtual ~IOException() throw() {}
	virtual const char *what() const throw() { return msg.c_str(); }
};

/**
 * Thrown when a certain file cannot be found.
 */
class FileNotFoundException: public IOException {
public:
	FileNotFoundException(const string &message): IOException(message) {}
	virtual ~FileNotFoundException() throw() {}
};

/**
 * An unexpected end-of-file I/O error.
 *
 * @ingroup Exceptions
 */
class EOFException: public IOException {
public:
	EOFException(const string &message): IOException(message) {}
	virtual ~EOFException() throw() {}
};

/**
 * Thrown when an invalid configuration is given.
 */
class ConfigurationException: public oxt::tracable_exception {
private:
	string msg;
public:
	ConfigurationException(const string &message): msg(message) {}
	virtual ~ConfigurationException() throw() {}
	virtual const char *what() const throw() { return msg.c_str(); }
};

/**
 * Indicates that a Pool::get() or Pool::asyncGet() request was denied.
 * The request never reached a process. This could be because, before the
 * request could reach a process, the administrator detached the containing
 * group. Or maybe the request sat in the queue for too long.
 */
class GetAbortedException: public oxt::tracable_exception {
private:
	string msg;

public:
	GetAbortedException(const string &message)
		: msg(message)
		{ }

GetAbortedException(const oxt::tracable_exception::no_backtrace &tag)
		: oxt::tracable_exception(tag)
		{ }

virtual ~GetAbortedException() throw() {}

virtual const char *what() const throw() {
		return msg.c_str();
	}
};

/**
 * Indicates that a Pool::get() or Pool::asyncGet() request was denied because
 * the getWaitlist queue was full.
 */
class RequestQueueFullException: public GetAbortedException {
private:
	string msg;

public:
	RequestQueueFullException(unsigned int maxQueueSize)
		: GetAbortedException(oxt::tracable_exception::no_backtrace())
		{
			stringstream str;
			str << "Request queue full (configured max. size: " << maxQueueSize << ")";
			msg = str.str();
		}

virtual ~RequestQueueFullException() throw() {}

virtual const char *what() const throw() {
		return msg.c_str();
	}
};

/**
 * Indicates that a specified argument is incorrect or violates a requirement.
 *
 * @ingroup Exceptions
 */
class ArgumentException: public oxt::tracable_exception {
private:
	string msg;
public:
	ArgumentException(const string &message): msg(message) {}
	virtual ~ArgumentException() throw() {}
	virtual const char *what() const throw() { return msg.c_str(); }
};

/*
 * @ingroup Exceptions
 */
class InvalidModeStringException: public ArgumentException {
public:
	InvalidModeStringException(const string &message): ArgumentException(message) {}
};

/**
 * A generic runtime exception.
 *
 * @ingroup Exceptions
 */
class RuntimeException: public oxt::tracable_exception {
private:
	string msg;
public:
	RuntimeException(const string &message): msg(message) {}
	virtual ~RuntimeException() throw() {}
	virtual const char *what() const throw() { return msg.c_str(); }
};

/**
 * An exception indicating that some timeout expired.
 *
 * @ingroup Exceptions
 */
class TimeoutException: public oxt::tracable_exception {
private:
	string msg;
public:
	TimeoutException(const string &message): msg(message) {}
	virtual ~TimeoutException() throw() {}
	virtual const char *what() const throw() { return msg.c_str(); }
};

/**
 * Represents some kind of security error.
 *
 * @ingroup Exceptions
 */
class SecurityException: public oxt::tracable_exception {
private:
	string msg;
public:
	SecurityException(const string &message): msg(message) {}
	virtual ~SecurityException() throw() {}
	virtual const char *what() const throw() { return msg.c_str(); }
};

/**
 * @ingroup Exceptions
 */
class NonExistentUserException: public SecurityException {
public:
	NonExistentUserException(const string &message): SecurityException(message) {}
};

/**
 * @ingroup Exceptions
 */
class NonExistentGroupException: public SecurityException {
public:
	NonExistentGroupException(const string &message): SecurityException(message) {}
};

/**
 * The application pool is too busy and cannot fulfill a get() request.
 *
 * @ingroup Exceptions
 */
class BusyException: public oxt::tracable_exception {
private:
	string msg;
public:
	BusyException(const string &message): msg(message) {}
	virtual ~BusyException() throw() {}
	virtual const char *what() const throw() { return msg.c_str(); }
};

/**
 * A parser detected a syntax error.
 *
 * @ingroup Exceptions
 */
class SyntaxError: public oxt::tracable_exception {
private:
	string msg;
public:
	SyntaxError(const string &message): msg(message) {}
	virtual ~SyntaxError() throw() {}
	virtual const char *what() const throw() { return msg.c_str(); }
};

} // namespace Passenger

#endif /* __cplusplus */

#endif /* _PASSENGER_EXCEPTIONS_H_ */

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Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	0755	2025-11-05 11:30:40
..	dir	-	root/root	0755	2025-11-05 11:30:40
Algorithms	dir	-	root/root	0755	2025-11-05 11:30:40
AppTypeDetector	dir	-	root/root	0755	2025-11-05 11:30:40
ConfigKit	dir	-	root/root	0755	2025-11-05 11:30:40
DataStructures	dir	-	root/root	0755	2025-11-05 11:30:40
FileTools	dir	-	root/root	0755	2025-11-05 11:30:40
IOTools	dir	-	root/root	0755	2025-11-05 11:30:40
Integrations	dir	-	root/root	0755	2025-11-05 11:30:40
JsonTools	dir	-	root/root	0755	2025-11-05 11:30:40
LoggingKit	dir	-	root/root	0755	2025-11-05 11:30:40
MemoryKit	dir	-	root/root	0755	2025-11-05 11:30:40
ProcessManagement	dir	-	root/root	0755	2025-11-05 11:30:40
SecurityKit	dir	-	root/root	0755	2025-11-05 11:30:40
ServerKit	dir	-	root/root	0755	2025-11-05 11:30:40
StrIntTools	dir	-	root/root	0755	2025-11-05 11:30:40
SystemTools	dir	-	root/root	0755	2025-11-05 11:30:40
Utils	dir	-	root/root	0755	2025-11-05 11:30:40
WrapperRegistry	dir	-	root/root	0755	2025-11-05 11:30:40
oxt	dir	-	root/root	0755	2025-11-05 11:30:40
vendor-copy	dir	-	root/root	0755	2025-11-05 11:30:40
vendor-modified	dir	-	root/root	0755	2025-11-05 11:30:40
AppLocalConfigFileUtils.h	text/x-c++	4.54 KB	root/root	0644	2025-04-01 09:08:02
BackgroundEventLoop.cpp	text/x-c++	9.83 KB	root/root	0644	2025-04-01 09:08:02
BackgroundEventLoop.h	text/x-c++	2.13 KB	root/root	0644	2025-04-01 09:08:02
Constants.h	text/x-c	4.82 KB	root/root	0644	2025-04-01 09:08:02
Constants.h.cxxcodebuilder	text/plain	1.96 KB	root/root	0644	2025-04-01 09:08:02
Exceptions.cpp	text/x-c	2.3 KB	root/root	0644	2025-04-01 09:08:02
Exceptions.h	text/x-c++	10.17 KB	root/root	0644	2025-04-01 09:08:02
FileDescriptor.h	text/x-c++	8.85 KB	root/root	0644	2025-04-01 09:08:02
Hooks.h	text/x-c++	4.88 KB	root/root	0644	2025-04-01 09:08:02
InstanceDirectory.h	text/x-c++	9.11 KB	root/root	0644	2025-04-01 09:08:02
LveLoggingDecorator.h	text/x-c++	3.29 KB	root/root	0644	2025-04-01 09:08:02
README.md	text/plain	199 B	root/root	0644	2025-04-01 09:08:02
RandomGenerator.h	text/x-c++	4.9 KB	root/root	0644	2025-04-01 09:08:02
ResourceLocator.h	text/x-c++	5.75 KB	root/root	0644	2025-04-01 09:08:02
SafeLibev.h	text/x-c++	7.83 KB	root/root	0644	2025-04-01 09:08:02
StaticString.h	text/x-c++	8.92 KB	root/root	0644	2025-04-01 09:08:02
Utils.cpp	text/x-c++	9.07 KB	root/root	0644	2025-04-01 09:08:02
Utils.h	text/x-c++	4.05 KB	root/root	0644	2025-04-01 09:08:02
WatchdogLauncher.cpp	text/x-c++	3.86 KB	root/root	0644	2025-04-01 09:08:02
WatchdogLauncher.h	text/x-c++	16.53 KB	root/root	0644	2025-04-01 09:08:02