Quelle error.c Sprache: C

/*---------------------------------------------------------------
* Copyright (c) 1999,2000,2001,2002,2003
* The Board of Trustees of the University of Illinois
* All Rights Reserved.
*---------------------------------------------------------------
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software (Iperf) 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:
*
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and
* the following disclaimers.
*
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimers in the documentation and/or other materials
* provided with the distribution.
*
*
* Neither the names of the University of Illinois, NCSA,
* nor the names of its contributors may be used to endorse
* or promote products derived from this Software without
* specific prior written permission.
*
* 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 CONTIBUTORS 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.
* ________________________________________________________________
* National Laboratory for Applied Network Research
* National Center for Supercomputing Applications
* University of Illinois at Urbana-Champaign
* http://www.ncsa.uiuc.edu
* ________________________________________________________________
*
* error.c
* by Mark Gates <mgates@nlanr.net>
* -------------------------------------------------------------------
* error handlers
* ------------------------------------------------------------------- */

#include "headers.h"
#include "util.h"

#ifdef __cplusplus
extern "C" {
#endif

#ifdef WIN32

/* -------------------------------------------------------------------
* Implement a simple Win32 strerror function for our purposes.
* These error values weren't handled by FormatMessage;
* any particular reason why not??
* ------------------------------------------------------------------- */

struct mesg {
    DWORD       err;
    const char* str;
};

const struct mesg error_mesgs[] =
{
    { WSAEACCES,             "Permission denied"},
    { WSAEADDRINUSE,         "Address already in use"},
    { WSAEADDRNOTAVAIL,      "Cannot assign requested address"},
    { WSAEAFNOSUPPORT,       "Address family not supported by protocol family"},
    { WSAEALREADY,           "Operation already in progress"},
    { WSAECONNABORTED,       "Software caused connection abort"},
    { WSAECONNREFUSED,       "Connection refused"},
    { WSAECONNRESET,         "Connection reset by peer"},
    { WSAEDESTADDRREQ,       "Destination address required"},
    { WSAEFAULT,             "Bad address"},
    { WSAEHOSTDOWN,          "Host is down"},
    { WSAEHOSTUNREACH,       "No route to host"},
    { WSAEINPROGRESS,        "Operation now in progress"},
    { WSAEINTR,              "Interrupted function call."},
    { WSAEINVAL,             "Invalid argument."},
    { WSAEISCONN,            "Socket is already connected."},
    { WSAEMFILE,             "Too many open files."},
    { WSAEMSGSIZE,           "Message too long"},
    { WSAENETDOWN,           "Network is down"},
    { WSAENETRESET,          "Network dropped connection on reset"},
    { WSAENETUNREACH,        "Network is unreachable"},
    { WSAENOBUFS,            "No buffer space available."},
    { WSAENOPROTOOPT,        "Bad protocol option."},
    { WSAENOTCONN,           "Socket is not connected"},
    { WSAENOTSOCK,           "Socket operation on non-socket."},
    { WSAEOPNOTSUPP,         "Operation not supported"},
    { WSAEPFNOSUPPORT,       "Protocol family not supported"},
    { WSAEPROCLIM,           "Too many processes."},
    { WSAEPROTONOSUPPORT,    "Protocol not supported"},
    { WSAEPROTOTYPE,         "Protocol wrong type for socket"},
    { WSAESHUTDOWN,          "Cannot send after socket shutdown"},
    { WSAESOCKTNOSUPPORT,    "Socket type not supported."},
    { WSAETIMEDOUT,          "Connection timed out."},
    { WSATYPE_NOT_FOUND,     "Class type not found."},
    { WSAEWOULDBLOCK,        "Resource temporarily unavailable"},
    { WSAHOST_NOT_FOUND,     "Host not found."},
    { WSA_INVALID_HANDLE,    "Specified event object handle is invalid."},
    { WSA_INVALID_PARAMETER, "One or more parameters are invalid."},
    { WSA_IO_INCOMPLETE,     "Overlapped I/O event object not in signaled state."},
    { WSA_IO_PENDING,        "Overlapped operations will complete later."},
    { WSA_NOT_ENOUGH_MEMORY, "Insufficient memory available."},
    { WSANOTINITIALISED,     "Successful WSAStartup not yet performed."},
    { WSANO_DATA,            "Valid name, no data record of requested type."},
    { WSANO_RECOVERY,        "This is a non-recoverable error."},
    { WSASYSCALLFAILURE,     "System call failure."},
    { WSASYSNOTREADY,        "Network subsystem is unavailable."},
    { WSATRY_AGAIN,          "Non-authoritative host not found."},
    { WSAVERNOTSUPPORTED,    "WINSOCK.DLL version out of range."},
    { WSAEDISCON,            "Graceful shutdown in progress."},
    { WSA_OPERATION_ABORTED, "Overlapped operation aborted."},
    { 0,                     "No error."}

    /* These appeared in the documentation, but didn't compile.
     * { WSAINVALIDPROCTABLE,   "Invalid procedure table from service provider." },
     * { WSAINVALIDPROVIDER,    "Invalid service provider version number." },
     * { WSAPROVIDERFAILEDINIT, "Unable to initialize a service provider." },
     */

}; /* end error_mesgs[] */

const char* winsock_strerror( DWORD inErrno );

/* -------------------------------------------------------------------
* winsock_strerror
*
* returns a string representing the error code. The error messages
* were taken from Microsoft's online developer library.
* ------------------------------------------------------------------- */

const char* winsock_strerror( DWORD inErrno ) {
    const char* str = "Unknown error";
    int i;
    for ( i = 0; i < sizeof(error_mesgs); i++ ) {
        if ( error_mesgs[i].err == inErrno ) {
            str = error_mesgs[i].str;
            break;
        }
    }

    return str;
} /* end winsock_strerror */

#endif /* WIN32 */

/* -------------------------------------------------------------------
* warn
*
* Prints message and return
* ------------------------------------------------------------------- */

void warn( const char *inMessage, const char *inFile, int inLine ) {
    fflush( 0 );

#ifdef NDEBUG
    fprintf( stderr, "%s failed\n", inMessage );
#else

    /* while debugging output file/line number also */
    fprintf( stderr, "%s failed (%s:%d)\n", inMessage, inFile, inLine );
#endif
} /* end warn */

/* -------------------------------------------------------------------
* warn_errno
*
* Prints message and errno message, and return.
* ------------------------------------------------------------------- */

void warn_errno( const char *inMessage, const char *inFile, int inLine ) {
    int my_err;
    const char* my_str;

    /* get platform's errno and error message */
#ifdef WIN32
    my_err = WSAGetLastError();
    my_str = winsock_strerror( my_err );
#else
    my_err = errno;
    my_str = strerror( my_err );
#endif

    fflush( 0 );

#ifdef NDEBUG
    fprintf( stderr, "%s failed: %s\n", inMessage, my_str );
#else

    /* while debugging output file/line number and errno value also */
    fprintf( stderr, "%s failed (%s:%d): %s (%d)\n",
             inMessage, inFile, inLine, my_str, my_err );
#endif
} /* end warn_errno */

#ifdef __cplusplus
} /* end extern "C" */
#endif

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