116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
/*
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* MUSCLE SmartCard Development ( https://pcsclite.apdu.fr/ )
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*
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* Copyright (C) 1999-2002
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* David Corcoran <corcoran@musclecard.com>
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* Copyright (C) 2002-2010
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* Ludovic Rousseau <ludovic.rousseau@free.fr>
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*
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. The name of the author may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @file
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* @brief This abstracts dynamic library loading functions and timing.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <string.h>
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#if defined(HAVE_DLFCN_H) && !defined(HAVE_DL_H) && !defined(__APPLE__)
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#include <dlfcn.h>
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#include <stdlib.h>
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#include "misc.h"
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#include "pcsclite.h"
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#include "debuglog.h"
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#include "dyn_generic.h"
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INTERNAL LONG DYN_LoadLibrary(void **pvLHandle, char *pcLibrary)
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{
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*pvLHandle = NULL;
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#ifndef PCSCLITE_STATIC_DRIVER
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*pvLHandle = dlopen(pcLibrary, RTLD_LAZY);
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if (*pvLHandle == NULL)
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{
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Log3(PCSC_LOG_CRITICAL, "%s: %s", pcLibrary, dlerror());
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return SCARD_F_UNKNOWN_ERROR;
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}
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#endif
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return SCARD_S_SUCCESS;
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}
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INTERNAL LONG DYN_CloseLibrary(void **pvLHandle)
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{
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#ifndef PCSCLITE_STATIC_DRIVER
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int ret;
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ret = dlclose(*pvLHandle);
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*pvLHandle = NULL;
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if (ret)
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{
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Log2(PCSC_LOG_CRITICAL, "%s", dlerror());
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return SCARD_F_UNKNOWN_ERROR;
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}
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#endif
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return SCARD_S_SUCCESS;
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}
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INTERNAL LONG DYN_GetAddress(void *pvLHandle, void **pvFHandle,
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const char *pcFunction, int mayfail)
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{
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char pcFunctionName[256];
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LONG rv = SCARD_S_SUCCESS;
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/* Some platforms might need a leading underscore for the symbol */
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(void)snprintf(pcFunctionName, sizeof(pcFunctionName), "_%s", pcFunction);
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*pvFHandle = NULL;
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#ifndef PCSCLITE_STATIC_DRIVER
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*pvFHandle = dlsym(pvLHandle, pcFunctionName);
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/* Failed? Try again without the leading underscore */
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if (*pvFHandle == NULL)
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*pvFHandle = dlsym(pvLHandle, pcFunction);
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if (*pvFHandle == NULL)
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{
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#ifdef NO_LOG
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(void)mayfail;
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#endif
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Log3(mayfail ? PCSC_LOG_INFO : PCSC_LOG_CRITICAL, "%s: %s",
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pcFunction, dlerror());
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rv = SCARD_F_UNKNOWN_ERROR;
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}
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#endif
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return rv;
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}
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#endif /* HAVE_DLFCN_H && !HAVE_DL_H && !__APPLE__ */
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