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/*
* Copyright (C) 1993-2000 by CERN/ID/PDP/DM
* All rights reserved
*/
#ifndef lint
static char sccsid[] = "@(#)$RCSfile: solveln.c,v $ $Revision: 1.1 $ $Date: 2005/03/29 09:27:19 $ CERN/IT/PDP/DM Felix Hassine";
#endif /* not lint */
#include <errno.h>
#include <stdio.h>
#if defined(_WIN32)
#define MAXHOSTNAMELEN 64
#else
#if defined(__Lynx__)
#include <socket.h>
#else
#include <sys/param.h>
#endif
#endif
#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN 64
#endif
#include <string.h>
#if defined(_WIN32)
#include <direct.h>
#else
#include <unistd.h>
#endif
#if defined(SOLARIS)
#include <netdb.h>
#endif /* SOLARIS */
#include <osdep.h>
#define MAXFILENAMSIZE 1024 /* Maximum length of a file path name */
#if defined(SOLARIS)
extern char * getcwd() ;
#endif
/*
* path is assumed to be a file name or a directory path.
* It does not modify the content of buffer path.
* return -1 if path has not been modified,
* a positive number otherwise.
*/
int DLL_DECL seelink ( path, buff, size)
char * path ;
char * buff ;
int size ;
{
#if defined(_WIN32)
strcpy(buff, path);
return (strlen(path));
#else
char *cp ;
char filename[MAXFILENAMSIZE] ;
char storpath[MAXFILENAMSIZE] ;
char stordir[MAXFILENAMSIZE] ;
int n ;
strcpy(storpath, path );
if ( (cp = strrchr(storpath,'/')) != NULL ) {
strcpy(filename,cp+1) ;
cp[0] = '\0' ;
}
else
return -1 ;
while ((cp = getcwd(stordir, MAXFILENAMSIZE-1)) == NULL && errno == ETIMEDOUT)
sleep (60);
if ( chdir(storpath) < 0 ) {
errno = ENOENT ;
return -1 ;
}
else {
cp = getcwd( buff, size );
chdir(stordir);
if ( cp == NULL )
return -1 ;
else {
/*
* Putting back file name
*/
strcat (buff,"/") ;
strcat (buff ,filename) ;
strcpy(filename, buff ) ;
if ( (n=readlink( filename, buff, size)) < 0 )
return (strlen(filename) ) ;
else {
buff[n] = '\0' ;
return ( strlen(buff) ) ;
}
}
}
#endif
}
/*
* Solves links on path names given at command line.
* Adds hostname when file path is local.
* Returns -errno on failure, 0 otherwise.
* Input : path to be modified
* buffer that contains the path transformed
* size is the buffer size.
* if size if not sufficient, nothing is changed and -ENAMETOOLONG is
* returned.
* It is assumed that path begins by '/' or that it contains ":/" .
*/
extern char *getconfent() ;
int DLL_DECL solveln(path, buffer, size)
char *path ;
char * buffer ;
int size ;
{
char *nfsroot ;
int n ;
char hostname[MAXHOSTNAMELEN] ;
char * p ;
nfsroot = getconfent("RFIO","NFS_ROOT",0) ;
#ifdef NFSROOT
if (nfsroot == NULL) nfsroot = NFSROOT;
#endif
if ( (nfsroot == NULL && strstr(path,":/") != NULL ) ||
(nfsroot != NULL && !strncmp(path,nfsroot,strlen(nfsroot)) )) {
if ((int)strlen(path)>size) {
(void) strncpy(buffer,path,size) ;
return -ENAMETOOLONG;
}
else {
(void) strcpy(buffer,path) ;
return 0 ;
}
}
if ( nfsroot == NULL && strstr(path,":/") == NULL ) {
if ( (n=seelink(path, buffer, size)) > 0 )
buffer[n]='\0' ;
else {
if ((int)strlen(path)>size) {
(void) strncpy(buffer,path,size) ;
return -ENAMETOOLONG;
}
else {
(void) strcpy(buffer,path) ;
return 0 ;
}
}
return 0 ;
}
/*
* Now we know we have nfs root != NULL & path does not have nfsroot
* in the beginning
*/
if ( (p=strstr(path,":/")) != NULL && !strncmp( p+1 , nfsroot
,strlen(nfsroot)) ){
/*
* Then erase machine name
*/
if ((int)strlen(p+1)>size) {
(void) strncpy(buffer,path,size) ;
return -ENAMETOOLONG;
}
else
(void) strcpy(buffer, p+1 ) ;
return 0 ;
}
/*
* path is machine:/XXXX and XXXX != nfsroot
*/
if ( ( p=strstr(path,":/")) != NULL &&
strncmp( p+1 , nfsroot ,strlen(nfsroot)) ) {
if ( (n=seelink( p+1 , buffer, size)) > 0 ) {
buffer[n]='\0' ;
if ( !strncmp( buffer,nfsroot,strlen(nfsroot)) )
return 0 ;
else {
(void) strcpy(buffer,path) ;
return 0 ;
}
}
else {
(void) strcpy(buffer,path) ;
return 0 ;
}
}
/*
* Now we know that path starts by '/', & path does not have nfsroot
* in its beginning
*/
gethostname( hostname, MAXHOSTNAMELEN ) ;
if ( (n=seelink(path, buffer, size)) < 0 ) {
#if defined(sgi) && !defined(IRIX5)
if ( errno == ENXIO || errno == ENOENT ) {
#else
if ( errno == EINVAL || errno == ENOENT ) {
#endif
sprintf( buffer, "%s:%s",hostname,path ) ;
return 0 ;
}
else
return -errno ;
}
else {
buffer[n]='\0' ;
if ( !strncmp( buffer , nfsroot ,strlen(nfsroot)) ||
strstr(buffer,":/") !=NULL )
return 0 ;
else {/* File is a simple local file */
char mobuf[MAXFILENAMSIZE] ;
strcpy(mobuf,buffer) ;
sprintf( buffer, "%s:%s",hostname,mobuf ) ;
return 0 ;
}
}
}
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