vl_comp.c

sock5代理服务器源代码

/*                                                                           */
/*  * Copyright (c) 1989, 1990, 1991 by the University of Washington         */
/*  *                                                                        */
/*  * For copying and distribution information, please see the file          */
/*  * <copyright.h>.                                                         */

#include <pfs.h>

/*                                                                           */
/*  * vl_comp - compare the names of two virtual links                       */
/*  *                                                                        */
/*  * VL_COMP compares the names of two links.  It returns                   */
/*  * 0 if they are equal, negative if vl1 < vl2, and positive if            */
/*  * vl1 > vl2.                                                             */
/*  *                                                                        */
/*  * ARGS: vl1,vl2 - Virtual links to be compared                           */
/*  *                                                                        */
/*  * RETURNS: 0 if equal, + is vl1 > vl2, - if vl1 < vl2                    */
/*  *                                                                        */
/*  * NOTES: Order of significance is as follows.  Existence,                */
/*  * name.  If names do not exist, then hosttype, host,                     */
/*  * native filenametype, native filename.  The only time                   */
/*  * the name will not exist if if the link is a union link.                */
int
vl_comp(vl1,vl2)
    VLINK	vl1;
    VLINK	vl2;
    {
	int	retval;

	if(vl1->name && !vl2->name) return(1);
	if(!vl1->name && vl2->name) return(-1);
	if(vl1->name && vl2->name && (*(vl1->name) || *(vl2->name)))
	    return(strcmp(vl1->name,vl2->name));

	retval = strcmp(vl1->hosttype,vl2->hosttype);
	if(!retval) retval = strcmp(vl1->host,vl2->host);
	if(!retval) retval = strcmp(vl1->nametype,vl2->nametype);
	if(!retval) retval = strcmp(vl1->filename,vl2->filename);
	return(retval);
    }

/*                                                                           */
/*  * vl_equal - compare the values of two virtual links                     */
/*  *                                                                        */
/*  * VL_EQUAL compares the values of two links.  It returns                 */
/*  * 1 if all important fields are the same, and 0 otherwise.               */
/*  *                                                                        */
/*  * ARGS: vl1,vl2 - Virtual links to be compared                           */
/*  *                                                                        */
/*  * RETURNS: 1 if equal, 0 if not equal                                    */
/*  *                                                                        */
int
vl_equal(vl1,vl2)
    VLINK	vl1;
    VLINK	vl2;
    {
      return strcmp(vl1->name, vl2->name) == 0         &&
	     vl1->linktype == vl2->linktype            &&
	     strcmp(vl1->type, vl2->type) == 0         &&
	     strcmp(vl1->hosttype, vl2->hosttype) == 0 &&
	     strcmp(vl1->host, vl2->host) == 0         &&
	     strcmp(vl1->nametype, vl2->nametype) == 0 &&
	     strcmp(vl1->filename, vl2->filename) == 0 &&
	     vl1->version == vl2->version              &&
	     vl1->f_magic_no == vl2->f_magic_no        ;

    }