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/* Copyright (C) 2005-2011 by George Williams */
/*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <basics.h>
/* Parse GNU .la "library" files. They give us the name to use with dlopen */
/* Currently only important on _Cygwin */
#if defined(__CygWin) && !defined(NODYNAMIC)
# include <dynamic.h>
# include <stdio.h>
# include <string.h>
# include <stdlib.h>
static char *LaInDir(char *dir,const char *filename,char *buffer, int buflen) {
char *pt, *dpt;
FILE *test;
char dllname[1025];
if ( dir==NULL ) {
strncpy(buffer,filename,buflen-3);
buffer[buflen-3] = '\0';
} else
snprintf(buffer,buflen-3,"%s/%s", dir,filename);
dpt = strrchr(buffer,'/');
if ( dpt==NULL )
pt = strrchr(buffer,'.');
else
pt = strrchr(dpt+1,'.');
if ( pt==NULL )
strcat(buffer,".la");
else
strcpy(pt,".la");
test = fopen(buffer,"r");
if ( test==NULL )
return( NULL );
while ( fgets(buffer,buflen,test)!=NULL ) {
if ( strncmp(buffer,"dlname='",8)==0 ) {
pt = strrchr(buffer+8,'\'');
if ( pt!=NULL ) {
*pt = '\0';
fclose(test);
if ( buffer[8]=='\0' )
return( NULL ); /* No dlopenable version */
if ( buffer[8]=='/' )
return( buffer+8 );
strcpy(dllname,buffer+8);
if ( dir==NULL ) {
pt = strrchr(filename,'/');
if ( pt==NULL )
return( buffer+8 );
snprintf(buffer,buflen,"%.*s/%s", pt-filename, filename, dllname );
} else
snprintf(buffer,buflen,"%s/%s", dir,dllname);
return( buffer );
}
}
}
fclose(test);
return( NULL );
}
#ifdef dlopen
# undef dlopen
#endif
void *libtool_laopen(const char *filename, int flags) {
char *ret;
char buffer[1025];
char dirbuf[1025];
char *path, *pt;
if ( filename==NULL )
return( dlopen(NULL,flags)); /* Return magic handle to main program */
if ( strchr(filename,'/')!=NULL )
ret = LaInDir(NULL,filename,buffer,sizeof(buffer));
else {
ret = NULL;
path = getenv("LD_LIBRARY_PATH");
if ( path!=NULL ) {
while ( (pt=strchr(path,':'))!=NULL ) {
strncpy(dirbuf,path,pt-path);
dirbuf[pt-path] = '\0';
ret = LaInDir(dirbuf,filename,buffer,sizeof(buffer));
if ( ret!=NULL )
break;
path = pt+1;
}
if ( ret==NULL )
ret = LaInDir(path,filename,buffer,sizeof(buffer));
}
/* I should search /etc/ld.so.cache here, but I can't parse it */
if ( ret==NULL )
ret = LaInDir("/lib",filename,buffer,sizeof(buffer));
if ( ret==NULL )
ret = LaInDir("/usr/lib",filename,buffer,sizeof(buffer));
if ( ret==NULL )
ret = LaInDir("/usr/X11R6/lib",filename,buffer,sizeof(buffer));
if ( ret==NULL )
ret = LaInDir("/usr/local/lib",filename,buffer,sizeof(buffer));
}
if ( ret!=NULL )
return( dlopen( ret,flags ));
return( dlopen(filename,flags) ); /* This will almost certainly fail, but it will provide an error for dlerror() */
}
#elif defined( __Mac )
/* The mac now has normal dlopen routines */
# include <dynamic.h>
# include <stdio.h>
# include <string.h>
void *gwwv_dlopen(char *name,int flags) {
#undef dlopen
void *lib = dlopen(name,flags);
char *temp;
if (( lib!=NULL && lib!=(void *) -1) || name==NULL || *name=='/' )
return( lib );
temp = galloc( strlen("/sw/lib/") + strlen(name) +1 );
strcpy(temp,"/sw/lib/");
strcat(temp,name);
lib = dlopen(temp,flags);
free(temp);
if ( lib!=NULL && lib!=(void *) -1 )
return( lib );
temp = galloc( strlen("/opt/local/lib/") + strlen(name) +1 );
strcpy(temp,"/opt/local/lib/");
strcat(temp,name);
lib = dlopen(temp,flags);
free(temp);
return( lib );
}
#elif defined( __Mac )
# include <basics.h>
# include <dynamic.h>
# include <stdio.h>
# include <string.h>
const void *gwwv_NSAddImage(char *name,uint32_t options) {
const void *lib = NSAddImage(name,options);
char *temp;
if (( lib!=NULL && lib!=(void *) -1) || name==NULL || *name=='/' )
return( lib );
temp = galloc( strlen("/sw/lib/") + strlen(name) +1 );
strcpy(temp,"/sw/lib/");
strcat(temp,name);
lib = NSAddImage(temp,options);
free(temp);
return( lib );
}
#endif
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